Of Comminuting Surface Contiguity Patents (Class 241/37)
  • Patent number: 9463497
    Abstract: In order to facilitate side extraction of the roller holder cartridge (3) in a rolling mill stand (100), the strokes of the hydraulic capsules needed to take the pistons of the same clear from the trajectory traveled by the roller holder cartridge (3) during the extraction of the same from the rolling mill, may reach values indicatively between 150 and 400 mm, values which can negatively affect response times of the position control system of said capsules (4?). In order to continue to apply the same capsule control methods but with a considerably more dynamic system capable of rapidly and accurately reacting to sudden changes of pressure, the servo valves in the control circuits are of the four-way type, instead of the three-way type.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: October 11, 2016
    Assignee: Danieli & C. Officine Meccaniche S.P.A.
    Inventors: Ettore Cernuschi, Simone Piacentini
  • Patent number: 9283568
    Abstract: A method of controlling the crushing of material in an inertia cone crusher includes the step of charging material to be crushed from a feeding hopper to a crushing chamber formed between an inner crushing shell being supported on a crushing head, and an outer crushing shell of the inertia cone crusher. An unbalance bushing, which is provided with an unbalance weight and rotatably connected to the crushing head by a drive shaft, is rotated such that a central axis of the crushing head gyrates about a gyration axis. The number of revolutions of the unbalance bushing is sensed using an rpm sensor. The number of revolutions of the unbalance bushing is controlled by a control system and the material is crushed in the crushing chamber.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 15, 2016
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Konstantin Belotserkovskiy, Rickard Svensson
  • Patent number: 9227191
    Abstract: A cone crusher includes an outer crushing shell and an inner crushing shell forming a crushing gap there between. The outer crushing shell is supported on an upper frame member in vertically adjustable engagement with a lower frame member. A sensor arrangement having a sensor element is provided for measuring the vertical position of the outer crushing shell. The cone crusher further includes a target means arranged to be detectable by the sensor element, wherein one of the target means and the sensor element are arranged to follow vertical movement of the upper frame member and to move in relation to the other one of the target means and the sensor element. The sensor element includes a vertical sensing array which extends in a vertical direction along at least a portion of a range within which the target means may be moved upon adjusting the vertical position of the upper frame member.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: January 5, 2016
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Konstantin Belotserkovskiy, Rickard Svensson
  • Publication number: 20150086687
    Abstract: An apparatus for mixing and cutting animal feed comprising a container with a side wall, a rotary mixing and cutting device positioned inside the container and arranged to be driven by a driving unit. At least one counter element is provided at the sidewall. The apparatus comprises positioning device for moving the counter element between a retracted position and an inserted position, and a control unit to control the positioning device of the counter element and arranged to determine an indication of the amount of power consumed by the driving units for driving the rotary mixing and cutting device and to control positioning device based on the determined indication of the amount of power.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 26, 2015
    Applicant: LELY PATENT N.V.
    Inventors: Arie Huyzer, Howard Sie, Jan Lambertus Pastoor, Jan Martinus Van Kuilenburg
  • Publication number: 20150069155
    Abstract: A crusher is provided having improved wear resistance and crushing capacity. Particularly, the crusher provides an improved mechanism for adjusting the closed side setting by acting on an adjustable jaw, rather than the moveable jaw. The crusher includes a moveable jaw, an adjustable jaw, and a frame that supports the adjustable jaw and the moveable jaw such that the adjustable jaw and the moveable jaw define a crushing chamber having an upper opening for receiving a material to be crushed and a lower opening for expelling crushed material from the chamber after crushing. The crusher also includes a drive mechanism coupled to the moveable jaw for directing reciprocating motion of the moveable jaw and an adjustment mechanism coupled to the adjustable jaw for altering an angle of the adjustable jaw and, thereby, altering a closed side setting of the crushing chamber.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Blake Pinckney, Ronald B. DeDiemar, Lou Whinchip, Gregory A. Young
  • Patent number: 8967504
    Abstract: A horizontal shaft impact crusher comprises a crusher housing having an inlet for material to be crushed, an outlet for material that has been crushed, an impeller being mounted on a horizontal shaft in the crusher housing and being operative for rotating around a horizontal axis, a curtain against which material accelerated by the impeller may be crushed, and an adjustment bar for adjusting the position of said curtain relative to the impeller. The crusher is further provided with a cross beam to which said adjustment bar is connected, said crossbeam being adjustable relative to the impeller, and a curtain position indicator device indicating the position of the cross beam relative to the impeller, thereby indicating the position of the curtain relative to the impeller.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: March 3, 2015
    Assignee: Sandvik Intellectual Property AB
    Inventors: Rowan Dallimore, Knut Kjaerran, Andreas Forsberg
  • Publication number: 20140306041
    Abstract: A cone crusher includes a crushing chamber formed between inner and outer crushing shells, a drive shaft that gyrates the crushing head to crush material in the crushing chamber, and a feeding hopper for feeding material to the crushing chamber. A measurement device measures an amount of material present in the feeding hopper. A control system controls, based on the measured amount of material present in the feeding hopper, at least one crusher operating parameter which is chosen from i) an rpm of the drive shaft, and ii) a width of a discharge opening formed between the inner crushing shell and the outer crushing shell.
    Type: Application
    Filed: November 13, 2012
    Publication date: October 16, 2014
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventor: Konstantin Belotserkovskiy
  • Publication number: 20140239099
    Abstract: The present invention is a processing device, such as a macerator for use in processing various types of food products, that includes an automatic adjustment mechanism for adjusting the position of a roller disposed within the macerator. The mechanism includes a controller operably connected to a motor that can move the roller within the macerator to vary the position of the roller with respect to another roller located in the macerator. Inputs to the controller are used to control the operation of the motor to move the roll into a desired configuration associated in a storage medium in the controller with a particular food product to be processed. The input to the controller can also be used to simultaneously adjust the position of other components of other processing devices in a food processing system, such as an injector to remove the need for individually adjust each device in the system.
    Type: Application
    Filed: May 2, 2014
    Publication date: August 28, 2014
    Applicant: Wolf-Tec, Inc.
    Inventors: RALF LUDWIG, Richard Timperio
  • Publication number: 20140131490
    Abstract: A combined tangential shear homogenizing and flashing apparatus for destructuring pretreated biomass comprises a housing connectable to a source of pressurized pretreated biomass, and a stator and a rotor mounted within the housing. The stator and rotor being confrontationally disposed and spaced apart by a non-uniformly dimensioned axial gap. The least axial dimension between the rotor and the stator defining a restriction to a biomass flow. In use, rotational movement of the rotor with respect to the stator imparts a tangential shear to a volume of pretreated biomass. The tangential shear homogenizes the volume of pretreated biomass while a pressure difference causes a partial phase separation of the homogenized biomass into vapor and liquid phases such that the pretreated biomass undergoes at least a three-fold total volumetric increase and a weight transition to a vapor of at least one percent (1%).
    Type: Application
    Filed: March 8, 2013
    Publication date: May 15, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: F Glenn Gallagher
  • Publication number: 20140048634
    Abstract: A method for regulating the roll gap pressure of a roller press and a corresponding roller press. The roll gap pressure is regulated dependent on at least one oscillating movement that is measured on the roller press. This has the advantage that the roller press can always be operated at the maximum roller press efficiency without the roller press reaching the overload range.
    Type: Application
    Filed: March 23, 2012
    Publication date: February 20, 2014
    Applicant: KHD HUMBOLDT WEDAG GMBH
    Inventors: Dieter Brendler, Meinhard Frangenberg, Hans-Peter Makulik, Stefan Seemann
  • Patent number: 8608097
    Abstract: In a system for monitoring the operating condition of a pulverizer, a sensor interface module positioned on or proximal to the pulverizer. The sensor interface module is operable to receive information generated by one or more sensors mounted on the pulverizer. An operator control station is in communication with the sensor interface module and is operable to receive data from the sensor interface module relevant to the signals received from the sensors. The operator control station is also operable to generate operational information indicative of a functional characteristic of the pulverizer and to track the operational information to determine whether degradation of the functional characteristic is occurring.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 17, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Robert F. Murphy, James P. Sutton, Rebecca L. Tobiasz, Sin K. Poon
  • Patent number: 8590819
    Abstract: A method has been developed that estimates from the on line measurements of readily available process variables the proportion of the mass of fiber in the refining zone of a chip refiner relative to the mass with a full refining zone. This estimate of the filling factor is used to determine the margin available to load the refiner and the control action needed to avoid abnormal operation.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: November 26, 2013
    Assignee: FPinnovations
    Inventors: Keith Miles, Lahoucine Ettaleb, Alain Roche
  • Patent number: 8567705
    Abstract: In a vertical mill, a pulverization table is supported with a vertical rotation axis core in a housing so as to be capable of being driven and rotated, and a pulverization roller rotatable in conjunction with rotation of the pulverization table is disposed above the pulverization table so as to be opposed to the pulverization table, and a cutter roller rotatable in conjunction with rotation of the pulverization table is disposed above the pulverization table so as to be opposed to the pulverization table. Accordingly, a solid matter such as biomass can be efficiently pulverized, thereby achieving improvement in pulverization efficiency.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 29, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshiki Yamaguchi, Kenichi Arima, Yutaka Iida, Yoshishige Uematsu
  • Publication number: 20130277470
    Abstract: The present invention relates to a roller crusher having two generally parallel rotatable rollers separated by a gap, and a feeding arrangement for feeding material to the rollers. The roller crusher further comprising a base frame and a first and a second roller frame section, each of the first and second roller frames sections being pivotably connected to the base frame and arranged for carrying one of the rollers in bearings arranged at opposed ends of each roller. The roller crusher also comprises at least one balancing cylinder extending between one of the roller frame sections and the base frame such that when the at least one balancing cylinder is activated, the interconnected roller frame sections will pivot relative to the base frame, thus adjusting the position of the rollers relative to the base frame.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 24, 2013
    Applicant: METSO MINERALS INDUSTRIES, INC.
    Inventor: Robert Leh Hendrix
  • Patent number: 8544774
    Abstract: A method of protecting a roller crusher, having two rollers separated by a gap, from uncrushable objects is disclosed. The method includes the steps of: detecting an uncrushable object in an in-feed stream of material, opening a gap between the rollers to a by-pass width, which is significantly larger than an operational width, such that the uncrushable object is permitted to pass through the gap, restricting an in-feed to the gap, such that material is fed to the gap at a restricted in-feed rate, determining that the uncrushable object has passed through the gap, reducing the gap to the operational width, and opening the in-feed to the gap, such that material is fed to the gap at an operational in-feed rate. A roller crusher having a protective system for protecting the roller crusher from uncrushable objects is also disclosed.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: October 1, 2013
    Assignee: Metso Minerals Industries, Inc.
    Inventors: Keith Harbold, Vadim Reznitchenko
  • Patent number: 8511594
    Abstract: Load cells are placed in the pre-compression systems of spring suspended rollers in coal/ore crusher/classifiers to produce electrical signals representing actual forces generated in the suspension system during crusher operation. This permits forces to be closely monitored during operation and/or automatically adjusted. Alternatively or in addition, alarm signals can be generated when pressures go out of tolerance.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: August 20, 2013
    Inventor: Rickey E. Wark
  • Patent number: 8496195
    Abstract: The present disclosure relates to a method for operating a gyratory cone crusher as well as a hydraulic circuit suitable for carrying out the method. A crusher comprises an inner crusher shell and an outer crusher shell, which define a crusher gap, and the crusher gap size is maintained by means of a hydraulic cylinder, and, in case the hydraulic liquid pressure exceeds a pressure threshold, hydraulic liquid is evacuated from the cylinder to increase the crusher gap size. The method involves carrying out detection of a tramp iron processing condition, implying that matter which the crusher cannot process has enter the gap. If such a condition is detected, the pressure threshold is lowered during a period of time. This means that the crusher gap is opened quicker, such that the matter that cannot be crushed is removed from the crusher, which is thereby protected from potentially detrimental impacts.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: July 30, 2013
    Assignee: Sandvik Intellectual Property AB
    Inventors: Patrik Sjoberg, Mauricio Torres
  • Patent number: 8453954
    Abstract: A method for aligning a cutter spindle of a granulator, particularly an underwater granulator, relative to a cutting plate includes rotationally driving the cutter spindle with a drive motor, measuring a force acting on the cutter spindle, generating a corresponding signal, and adjusting especially the angular alignment of the cutter spindle relative to the cutting plate as a function of the signal by pivoting the cutter spindle about at least two pivot axes which enclose an angle with each other A granulator, particularly an underwater granulator, for producing plastic granulate, has a cutting box and a cutter spindle, a cutter holder rotatably received in the cutting box, and a drive motor connected to the cutter spindle, and is configured to perform the aforedescribed method.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: June 4, 2013
    Assignee: KraussMaffei Berstorff GmbH
    Inventors: Armin Pfeiffer, Thorsten Weber, Jürgen Voigt
  • Publication number: 20130001337
    Abstract: The present disclosure relates to a method for operating a gyratory cone crusher as well as a hydraulic circuit suitable for carrying out the method. A crusher comprises an inner crusher shell and an outer crusher shell, which define a crusher gap, and the crusher gap size is maintained by means of a hydraulic cylinder, and, in case the hydraulic liquid pressure exceeds a pressure threshold, hydraulic liquid is evacuated from the cylinder to increase the crusher gap size. The method involves carrying out detection of a tramp iron processing condition, implying that matter which the crusher cannot process has enter the gap. If such a condition is detected, the pressure threshold is lowered during a period of time. This means that the crusher gap is opened quicker, such that the matter that cannot be crushed is removed from the crusher, which is thereby protected from potentially detrimental impacts.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 3, 2013
    Inventors: Patrik Sjoberg, Mauricio Torres
  • Patent number: 8172167
    Abstract: There is described a crushing plant and a method for controlling the same. The crushing plant involves a gyratory crusher (1) with means for controlling a minimum gap in a crushing chamber, and is driven by a diesel engine (18). A load value is retrieved from the diesel engine e.g. by means of a J1939 interface. If the retrieved value exceeds a predetermined threshold value, the minimum gap is increased. Thereby it can be avoided that the diesel engine stalls; such that continuous operation of the crushing plant may be ensured.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: May 8, 2012
    Assignee: Sandvik Intellectual Property AB
    Inventors: Olle Hedin, Anders Nilsson, Jonny Wallin, Richard Bern, Göran Forsberg
  • Patent number: 8172166
    Abstract: A roll mill for a milling-dispersing treatment has a fixed roll fixed to a frame, and a transfer roll displaceable into and out of contact with the fixed roll in a direction perpendicular to the fixed roll by a servomotor and a ball screw. A laser sensor disposed between the fixed roll and the transfer roll measures the distance between the rolls, and a load sensor measures a pressing force between the rolls. An electronic automatic control device maintains a constant distance and a constant pressing force between the fixed roll and the transfer roll by feedback of detection signals sent from the respective sensors, wherein the servomotor is driven by the electronic automatic control device to adjust the position of the transfer roll.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 8, 2012
    Assignee: Inoue Mfg., Inc.
    Inventors: Yoshitaka Inoue, Choji Hatsugai
  • Patent number: 8141805
    Abstract: A chopper assembly for a combine includes a rotary chopper element, a chopper grate assembly spaced from the rotary chopper element to form a passageway for crop residue and a knife bank adjustably connected to the chopper grate assembly. The knife bank is movable between a first position where the knife bank is fully inserted into the passageway and a second position where the knife bank is full retracted from the passageway. An actuating mechanism is used to move the knife bank between the first position and the second position. A position sensor is used to measure the position of the actuating mechanism and determine the position of the knife bank relative to the passageway.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: March 27, 2012
    Assignee: CNH America LLC
    Inventors: Nathan E. Isaac, Jason M. Benes, Edmund N. Holt, II, Brent E. Smith
  • Patent number: 8128012
    Abstract: An apparatus for the reclamation of molding sand by which the quality of the reclaimed molding sand is enhanced. The apparatus for reclamation of molding sand includes a part for feeding the molding sand 1, which part has a sand falling port at its bottom, a rotary drum 2 disposed below the part for feeding the molding sand 1 and being rotatable horizontally, a motor driving means 4 for rotating the rotary drum 2 by an electric motor 3, a roller 5 disposed in the rotary drum 2 and spaced apart therefrom, and a cylinder 6 connected to the roller 5 that presses the roller 5 toward the rotary drum 2.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: March 6, 2012
    Assignee: Sintokogio, Ltd.
    Inventors: Yukinori Aoki, Junichi Iwasaki, Yutaka Hagata
  • Publication number: 20120024994
    Abstract: Load cells are placed in the pre-compression systems of spring suspended rollers in coal/ore crusher/classifiers to produce electrical signals representing actual forces generated in the suspension system during crusher operation. This permits forces to be closely monitored during operation and/or automatically adjusted. Alternatively or in addition, alarm signals can be generated when pressures go out of tolerance.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 2, 2012
    Inventor: Rickey E. WARK
  • Patent number: 8070081
    Abstract: Load cells are placed in the pre-compression systems of spring suspended rollers in coal/ore crusher/classifiers to produce electrical signals representing actual forces generated in the suspension system during crusher operation. This permits forces to be closely monitored during operation and/or automatically adjusted. Alternatively or in addition, alarm signals can be generated when pressures go out of tolerance.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 6, 2011
    Inventor: Rickey E. Wark
  • Patent number: 8038084
    Abstract: The invention relates to a roller mill having a mill housing, a mill path which is supported so as to be rotatable about a mill axis inside the mill housing, and at least one mill roller which can be rotated about a mill roller shaft and which is engaged with the mill path in terms of rolling action. There is further provided a pivot lever which is for rotatably retaining the mill roller and which has a pivot shaft arranged parallel with the mill roller axis and which is supported outside the mill housing. The pivot lever is further in operational contact with a hydropneumatic resilient system in order to adjust the pressing pressure of the mill roller. The pivot lever is supported outside the mill housing with spacing therefrom in such a manner that the forces which are produced by the hydropneumatic resilient system are dissipated into the mill foundation directly or via pillars.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 18, 2011
    Assignee: Polysius AG
    Inventors: Dirk Dilly, Franz-Josef Zurhove, Thomas Rüther, Ludwig Könning, Pedro Guerrero Palma, Bernhard Peterwerth, Thomas Spliethoff, Heiko Fornefeld
  • Patent number: 8020797
    Abstract: A device for aligning the refining disc of a refining apparatus, in which refining apparatus lignocellulose-containing material is disintegrated and refined, which device is intended to be arranged in a support (701) for the axle package of the refining apparatus, the supporting (701) resting on a ground surface, which axle package comprises the rotary refining disc of the refining apparatus, a rotation axle to which the rotary refining disc is attached, and a bearing housing (702) in which the axle is journalled by means of bearings arranged in the bearing housing (704).
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: September 20, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Tomas Sahlin, Mattias Eriksson, Göran Byström
  • Patent number: 7984868
    Abstract: Disclosed is a grinder which includes a grinder assembly retained in a housing. The grinder assembly receives material for grinding such as coffee beans. Grinding burrs are provided, one of which is rotated by a grinder drive motor of the grinder assembly. The other of the burrs is generally non-rotatable with regard to the general grinding operation. The two grinding burrs are provided with grinding surfaces against which beans are ground. The grinding surfaces are spaced a desired dimension away from each other to produce a desired grind of coffee. An apparatus, system and method is disclosed for adjusting at least the generally non-rotatable burr to maintain, calibrate or otherwise adjust the dimension or gap between the grinding surfaces of the burrs.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: July 26, 2011
    Assignee: Bunn-O-Matic Corporation
    Inventor: James H. Anson
  • Patent number: 7957944
    Abstract: An example method for estimating a wear profile of a consumable wear product used in conjunction with the processing of ore includes obtaining historical data related to wear of the consumable wear product, building a historical wear model based on the historical data, and obtaining a current single measurement point for the consumable wear product. The method includes extrapolating an estimated wear profile using the current measurement point and the historical wear model, and estimating a performance characteristic based on the estimated wear profile.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: June 7, 2011
    Assignee: Servicios Y Consultorias Hendaya SA
    Inventor: Eric Herbst
  • Patent number: 7954735
    Abstract: A crushing and reducing device, especially cone crushers, used in the building and ore-dressing industries. A method of controlling the operation of a cone crusher having an internal cone connected to an unbalanced vibrator, and an external cone. The method includes utilizing a measurement plane being connected to the internal cone, measuring distances between the measurement plane and a frame of the crusher, and calculating an angle of inclination of the inner cone. The method further includes controlling, based on the calculated angle of inclination of the inner cone, at least one parameter chosen among: the angle of inclination of the inner cone, and the size of a discharge gap between the internal cone and the external cone.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: June 7, 2011
    Assignee: Sandvik Intellectual Property AB
    Inventor: Konstantin Evseevich Belotserkovsky
  • Patent number: 7954738
    Abstract: Provided is an ice dispenser. The ice dispenser dispenses ice pieces have various sizes such as chunks, fragments, and shavings to users, and the size of ice pieces discharged from the ice dispenser can be conveniently adjusted. The ice dispenser includes a rotatable first roller, a rotatable second roller disposed close to the first roller, and a distance adjustor. The distance adjustor is configured to adjust a distance between the first and second rollers for adjusting sizes of ice crushed between the first and second rollers.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: June 7, 2011
    Assignee: LG Electronics Inc.
    Inventors: Dong Hoon Lee, Wook Yong Lee
  • Patent number: 7942358
    Abstract: A crusher and a method for controlling a crusher having a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method having the steps of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: May 17, 2011
    Assignee: Metso Minerals Inc.
    Inventors: Ari Posti, Kari Kuvaja, Ilpo Nieminen, Jarmo Eloranta, Harri Lehtonen
  • Publication number: 20110101139
    Abstract: A roll mill for a milling-dispersing treatment has a fixed roll fixed to a frame, and a transfer roll displaceable into and out of contact with the fixed roll in a direction perpendicular to the fixed roll by a servomotor and a ball screw. A laser sensor disposed between the fixed roll and the transfer roll measures the distance between the rolls, and a load sensor measures a pressing force between the rolls. An electronic automatic control device maintains a constant distance and a constant pressing force between the fixed roll and the transfer roll by feedback of detection signals sent from the respective sensors, wherein the servomotor is driven by the electronic automatic control device to adjust the position of the transfer roll.
    Type: Application
    Filed: November 3, 2009
    Publication date: May 5, 2011
    Inventors: Yoshitaka Inoue, Choji Hatsugai
  • Patent number: 7900858
    Abstract: A material reducing apparatus comprising a feed conveyor, for conveying material to be reduced, and a feed roller cooperating with the feed conveyor. An upwardly rotatable rotor carrying a plurality of strikers which facilitate reduction of the material to be reduced and an anvil cooperating with the plurality of strikers to facilitate further reduction of the material to be reduced. A grate assembly, located adjacent an arcuate path of the rotor, which permits sufficiently reduced material to pass therethrough. The material reducing apparatus further includes a failsafe system which comprising an accelerometer supported by the rotor and coupled to a control system such that the accelerometer, upon detection of the rotor contacting a hard material, sends a signal to the control system. If the signal indicates a sufficiently large material, the control system reverses a rotational direction of the feed roller so that the feed roll rotates to withdraw the hard material from contact with the rotor.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 8, 2011
    Inventor: Anders Ragnarsson
  • Patent number: 7845583
    Abstract: Methods and apparatus controlling the alignment between refining surfaces of opposite refining discs are disclosed which are relatively rotatable and which are incorporated in a refiner for disintegrating and refining lignocellulose-containing material in a refining gap between the refining surfaces. The disclosed method includes positioning at least three sensors at least three measurement positions, measuring the vibrations at each of the measurement positions during refiner operation, and comparing each of the measured vibrations at each of the measurement positions with each other.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: December 7, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Peter Svedberg, Hans-Olof Backlund, Thomas Sahlin
  • Publication number: 20100288862
    Abstract: Load cells are placed in the pre-compression systems of spring suspended rollers in coal/ore crusher/classifiers to produce electrical signals representing actual forces generated in the suspension system during crusher operation. This permits forces to be closely monitored during operation and/or automatically adjusted. Alternatively or in addition, alarm signals can be generated when pressures go out of tolerance.
    Type: Application
    Filed: May 14, 2009
    Publication date: November 18, 2010
    Inventor: Rickey E. WARK
  • Patent number: 7832665
    Abstract: A tension adjustment gauge system and method for a ball and ring coal pulverizer is provided that includes a housing, a stationary top grinding ring within the housing, a rotating lower grinding ring within the housing, a plurality of grinding balls between the top grinding ring and the lower grinding ring, an adjustable loading system for applying a compressive force exerted on the top grinding ring and grinding balls against the lower grinding ring. The adjustable loading system includes a single hydraulic assembly mounted on the upper portion of the housing, a gauge mounted to the hydraulic assembly for determining linear movement of a piston of the hydraulic assembly, a plurality of threaded rods mounted to the upper portion of the housing capable of being manually adjusted. The movement of the piston corresponds to an equal distance of movement of a spring gap between an upper and lower portion of the compression spring, such that the gauge indicates the change in the spring gap by moving the piston.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 16, 2010
    Assignee: Dominion Resources, Inc.
    Inventor: Richard Buonfiglio
  • Patent number: 7815133
    Abstract: A crushing and reducing device, especially cone crushers, used in the building and ore-dressing industries. A method includes providing a crusher with proximity sensors and a disc rigidly secured to the unbalanced-mass vibration generator of the crusher such that the plane thereof is always perpendicular to the rotation axis of the vibration generator. The method includes measuring a distance to the disc, calculating the three-dimensional position of the disc plane, calculating the amplitude of the circular vibrations of the internal cone according to the position, calculating the size of a crushing gap according to the calculated amplitude, comparing the size with the specified parameter of the gap and, if required based on comparison results, outputting a control command to hydraulic cylinders to modify the position of an adjustment ring. The adjustment ring position is controlled by a proximity sensor which is mounted on the flange of a body top part.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: October 19, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventor: Konstantin Evseevich Belotserkovsky
  • Patent number: 7591437
    Abstract: A crusher has first and second crushing elements spaced apart to form a crushing gap therebetween. A measuring device is arranged to measure the instantaneous load on the crusher during at least one period to obtain a number of measured values. A calculation device is arranged to calculate a representative load value that is representative of the highest, measured instantaneous load during each such period of time. A control device is arranged to compare the representative load value with a desired value and to control the load on the crusher depending on the comparison.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: September 22, 2009
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anders Nilsson, Johan Gullander, Kjell-Åke Svensson, Kent Nilsson, Mattias Nilsson
  • Patent number: 7568641
    Abstract: A method and apparatus for determining wear and tear in machines includes a method that determines a voltage draw and/or a current draw of a first subsystem of the machine during its operation, and wear and tear present in a second machine subsystem is determined based on the draw determined in the first subsystem. In one embodiment, a coal grinding machine includes a drive, a coal grinding mill driven by the drive, a device for determining an electrical draw of a current and/or voltage draw of the drive during operation, and a device for inferring wear and tear present in the coal grinding mill on the basis of voltage and/or current draw determined in the drive. The machine can include a device for inferring the quality or type of material (like coal) being processed in the mill based on the draw determined in the drive.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: August 4, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Markus Dreimann, Wolfgang Fick, Uwe Gerk
  • Patent number: 7543769
    Abstract: The present invention provides a blasting medium picking-apart device comprising: a hopper-shaped container having an upper opening through which a blasting medium is put in; a blade attached to a rotary shaft which is mounted along the central axis of the container, for applying a shear force to the blasting medium when the blade is rotated; a first shearing plate attached to an inner surface of the container for applying a shear force to the blasting medium between the rotating blade and the first shearing plate; an annular horizontal plane fixed to a lower opening of the container; a rotary plate which is attached to the rotary shaft, and is disposed opposite to the horizontal plane with a predetermined space therebetween; a second shearing plate attached to the rotary plate; and a rotation drive section for driving the blade and the rotary plate for rotation via the rotary shaft.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 9, 2009
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Tokuo Shimizu, Tetsunori Yano, Naoki Okamoto
  • Publication number: 20090140087
    Abstract: A control apparatus, particularly for roller mills in plants for milling food products, including a probe device which is inserted in a container of a product to be fed to a pair of milling rollers by feed rollers. The device includes a reference probe, which is always immersed in the product and measures a reference capacitance value, and a level probe, which measures a variation of the capacitance of the product related to the variation of the level of the product. The reference capacitance value and the capacitance variation are used by a control means to actuate the rollers. The probe device is pre-calibrated in factory so as to be able to adapt automatically to the variations of the characteristics of the product to be fed to the rollers.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 4, 2009
    Applicant: OCRIM S.P.A.
    Inventors: Alberto C. Bonelli, Giansante O. Triachini
  • Patent number: 7513446
    Abstract: A jaw crusher where the tension rod includes an electronically-controlled hydraulic pre-load and an automatically releasable pre-load whenever adjustments to the size of the material output are made, together with a remote visual indicator of the setting of the size of the material output.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: April 7, 2009
    Assignee: Cedarapids, Inc.
    Inventors: Gregory A. Young, Steven A. Reicks
  • Publication number: 20090084875
    Abstract: A tension adjustment gauge system and method for a ball and ring coal pulverizer is provided that includes a housing, a stationary top grinding ring within the housing, a rotating lower grinding ring within the housing, a plurality of grinding balls between the top grinding ring and the lower grinding ring, an adjustable loading system for applying a compressive force exerted on the top grinding ring and grinding balls against the lower grinding ring. The adjustable loading system includes a single hydraulic assembly mounted on the upper portion of the housing, a gauge mounted to the hydraulic assembly for determining linear movement of a piston of the hydraulic assembly, a plurality of threaded rods mounted to the upper portion of the housing capable of being manually adjusted. The movement of the piston corresponds to an equal distance of movement of a spring gap between an upper and lower portion of the compression spring, such that the gauge indicates the change in the spring gap by moving the piston.
    Type: Application
    Filed: September 25, 2008
    Publication date: April 2, 2009
    Inventor: Richard BUONFIGLIO
  • Patent number: 7508194
    Abstract: A sensor device for measuring distance between a stator and a rotor in a machine is of the magnetic type and is intended to be mounted in the stator in order to interact with an opposing surface on the rotor. A sensor body (10) can be moved axially in a housing (11) mounted in the stator by means of an operating mechanism (13) and has a stop (16) at a predetermined distance (e) from its end surface designed to interact with a corresponding stop (17) inside the housing. This distance (e) exceeds the distance (d) between the stop (17) in the hosing and the end of the sensor body (10) by a predetermined distance (c) when the sensor body is in its normal measuring position. These stops (16, 17) make possible a particularly accurate calibration of the sensor device.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: March 24, 2009
    Assignee: Daprox AB
    Inventor: Bengt Åkerblom
  • Publication number: 20080135652
    Abstract: A safety device that can close the paper passage of a shredder has a touch board pivoted in the vicinity of the shredder opening. When the board is under a pressure produced by fingers touching the opening, it is rotated about its pivotal axis. Its rotation drives a transmission mechanism and a closing element to close the opening. Therefore, the fingers cannot go into the opening and get hurt. Once the pressure on the touch board disappears, a restoring element pushes the touch board back to its normal position and brings the closing element away from the closing position. The opening is thus open again.
    Type: Application
    Filed: May 3, 2007
    Publication date: June 12, 2008
    Applicant: Michilin Prosperity Co., Ltd.
    Inventor: Simon Huang
  • Patent number: 7360728
    Abstract: A hay bale processor (10) having a cylindrical rotatable drum (14) adapted to displace a bale of hay (156-157) over a grill (26) which has a plurality of spaced-apart parallel slot openings (27) which are adjustable to define an average fiber cut length. A rotor (28) driven by an electric motor (66-67) has cutting blades (35) projecting through the openings to contact a bottom face (159) of a bale of hay (160) displaced over the grill. The rotor has a driveable shaft (29) secured to a displaceable suspension mechanism (45) to displace the blades (35) in the openings and above the grill a variable distance depending on the resistive load appliA hay bale processor (10) having a cylindrical rotatable drum (14) adapted to displace a bale of hay (156-157) over a grill (26) which has a plurality of spaced-apart parallel slot openings (27) which are adjustable to define an average fiber cut length.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: April 22, 2008
    Inventor: Victor Rousseau
  • Patent number: 7360726
    Abstract: In a method for starting a crushing operation in a gyratory crusher in which rocks are passed through a crushing gap to be crushed, the following steps are carried out: (a) a driving device is started which causes a crushing head to execute a gyratory pendulum movement, and a first width of the crushing gap is set, (b) a supply of material to the gap is commenced, (c) the resulting load on the crusher is measured, (d) the width of the gap is adjusted so that the load approaches a desired value, (e) a measure which is representative of the width of the gap after adjustment, is read, and (f) such read measure is utilized for calculation of a gap width for use as a first width of the gap in carrying out step (a) of the next start-up of a crushing operation.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: April 22, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Kent Nilsson, Mattias Nilsson
  • Patent number: 7344097
    Abstract: A jaw crusher where the tension rod includes an electronically-controlled hydraulic pre-load and an automatically releasable pre-load whenever adjustments to the size of the material output are made, together with a remote visual indicator of the setting of the size of the material output.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: March 18, 2008
    Assignee: Cedarapids, Inc.
    Inventors: Gregory A. Young, Steven A. Reicks
  • Patent number: 7337995
    Abstract: A kernel cracking assembly comprises two frames each supporting a respective one of two rollers between which kernels are crushed. A hydraulically operated actuator acts to move the frame relative to frame to set the separation of the rollers. A position sensor coupled to the actuator forms part of a closed-loop feedback circuit which serves to maintain a predetermined separation of the rollers.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: March 4, 2008
    Assignee: CNH America LLC
    Inventors: Sandor W. Van Vooren, Dirk J. Desnijder