Abstract: A pulverizing mill designed especially for waste products made of plastic is equipped with a pulverizing cylinder (14) situated under a downward slanted cover plate (22) by means of which the connection between the pulverizing cylinder (14) and a hopper (52) containing the material to be pulverized can be alteratively opened and closed. When the pulverizing mill is switched off, a control unit (70) continues to energize a cylinder drive (68) until the cover plate has been moved into its closed position. This ensures that the pulverizing cylinder (14) can be restarted, even though the cylinder drive (68) is set to run the pulverizing cylinder at high speeds of preferably 200 to 1000 rpm, as is advantageous for plastic waste products.

Abstract: A sharps disposal apparatus is provided for reducing contaminated medical sharps into unrecognizable, ordinary waste. The disposal apparatus comprises a disposal unit including a disposer, disposable waste receptacle, and sterilant recycling system. During the destruction and sterilization operation, the sterilant recycling system introduces sterilant into the disposer to sterilize the contaminated medical sharps while the disposer is grinding the sharps into small fragments. Once the medical waste is reduced to small fragments and is sterilized, the reduced waste is deposited in the disposable waste receptacle. Excess disinfectant flows through the waste receptacle and is recovered by a reservoir to be recycled. After the waste receptacle is full, the waste receptacle is easily removed from disposal unit, without the reduced medical waste coming into contact with human hands, and is disposed as ordinary waste.

Abstract: A boiler fuel distribution control system in which a boiler fuel demand signal is employed to regulate the rate of grinding of the fuel within predetermined limits of air supply so the grinding of the fuel material is accomplished at a desired mill grinding speed and within a fluid bed differential pressure across the grinding mill to maintain a supply of fuel adequate to keep up the desired boiler operation. It is also a system in which stand alone isolated control computer accessories can be temporarily manually adjusted to the control system until a replacement is available.

Abstract: A home recycling center comprised of a hollow rectangular compartment having an opening formed through a top wall thereof. A vertical compartment is secured to the top wall about the opening formed therethrough. The rectangular compartment has a plurality of longitudinal tracks secured therein. Each of the tracks is secured to a front wall with a corresponding track secured to a rear wall. A crushing mechanism is secured within the vertical compartment of the hollow rectangular compartment. A plurality of storage containers have wheels adapted for slidable coupling with the plurality of longitudinal tracks of the hollow rectangular compartment.

Abstract: A deodorizer apparatus for an electric grinder type garbage disposal system automatically injects a spray of deodorizer from a conventional spray can into the grinder chamber after the grinder motor is turned off, which is the optimum time for deodorizing. One type of actuator mechanism uses a shaft supported cam to depress the valve on the spray can. The cam is driven against a rest stop by a spring, and the spring is tensioned by a motor device operated in parallel with the grinder motor when the disposer is active. Another actuator mechanism uses a solenoid operated by logic circuits sensing the state of the grinder motor.

Abstract: A bale shredder for shredding a large bale of forage, bedding, or mulching material is provided wherein a cutter is mounted to a frame for moving with a cutting action for shredding a bale. Further, an oscillating carriage is mounted to the frame for oscillating the bale across the cutter to induce an additional cutting action on the bale by the cutter.

Abstract: Containerized medical waste is treated by a process in which the materials are carried by a conveyor under a negative pressure to a multiple-stage shredder. Sodium hypochlorite is added at several points in the shredder section of the apparatus. The output of the shredder is compressed and the liquid component which is separated out is recirculated. The compressed solid is conveyed through a conveyor in which the temperature is maintained at a level just under 212.degree. F. by the introduction of steam. The pressure is maintained at or below atmospheric pressure at all points in the system to prevent release of contaminated materials into the atmosphere. By using the combination of sodium hypochlorite and steam, it is possible to eliminate live microorganisms entirely while still taking advantage of low pressure to avoid accidental release of contaminated materials.

Abstract: Feed stock is made from an assortment of post-consumer polymer articles by assembling those articles of the assortment which are suitable for recycling into feed stock. The assemblage is granulated into particles of a size suitable for feed stock. A detergent solution of predetermined concentration is formed for cleaning the granulated particles. The solution is added to the particles during the granulating step to mix the detergent solution with the articles to facilitate cleaning during granulating.

Abstract: A waste paper processing system includes an upper shredding portion and a lower compressing portion. The shredding portion includes to horizontally parallel shafts mounting thereon a plurality of circular blades. The shafts are rotated to spin outwardly of a space between the shafts from a paper feeding direction. Presser arms are provided for retaining paper from above during shredding and stopper arms and a filter portion are provided below the blades to assure the paper is shredded sufficiently. After shredding the paper falls into a hopper and is introduced via a rotor to the compression portion. In the compression portion a screw is rotated for urging the shredded paper into a compression tube the tube as a narrower portion at the lower end for assuring sufficient compression of the shredded paper. In addition, water is added to the shredded paper in the upper side of the compression tube for binding the shredded paper together as pulp.

Abstract: A grinding apparatus includes a roller mill in which material particles are pre-ground, a tube mill connected to the roller mill through a fluidized-bed-type classifying device in which the material particles are classified by size and a circulation line is connected between the classifying device and the roller mill, wherein a fluidized portion of the pre-ground particles, which consists of a fine material component is fed into a tube mill, a remaining portion of the pre-ground particles, which consists of course material and some amount of fine material not fed into the tube mill is returned to the roller mill through the circulation line where the remaining portion of the pre-ground particles is again crushed together with newly fed material particles in the roller mill.

Abstract: A powder dispersion system, including a powder disperser and a control unit, supplies a controlled particle stream to a particle sizing system, instrument, or other processing device. The powder disperser includes a dynamic shear dispersion assembly and may include a fluidization assembly. An impact surface for deagglomeration of particles is located within a rapid acceleration chamber of the dynamic shear dispersion assembly. The particles are accelerated from the impact surface through an annular nozzle. A feedback loop dynamically controls the dynamic shear force applied to the aerosol transport gas, which in turn places reaction forces upon the particles, within the annular nozzle. The fluidization assembly includes a primary chamber for holding a powder sample and a secondary chamber for entraining particles of the powder sample in a transport gas stream. A pulsed gas jet directed into the primary chamber disperses particles of the powder sample into the secondary chamber.

Abstract: This invention is directed to a shredding machine utilizing a lubrication process to increase the shredding capacity and service life of the machine. More specifically, the invention discloses a distribution manifold containing a plurality of uniformly dispersed pores which discharge fluid across the cutting elements of the shredding machine in a precise and even manner. The pore diameter and length can be chosen to provide for variable fluid discharge rates. Additionally, this invention relates to a lubrication discharge system which utilizes an actuating means that controls the discharge intervals over which the porous manifold releases the fluid. Provisions are included which allow for the lubrication discharge system to operate by use of a pump, or by the mere force of gravity in combination with a control valve.

Abstract: The present invention provides method and apparatus to continuously operate a bead mill. At the outlet of the bead mill is a separator screen which prevents particles of a certain size from being discharged. After running the bead mill, the screen tends to get clogged with large sized particles. The present invention provides an ultrasonic probe that periodically cleans the screen when the pressure within the milling chamber reaches a predetermined value.

Abstract: A sharps disposal apparatus is provided for reducing contaminated medical sharps into unrecognizable, ordinary waste. The disposal apparatus comprises a disposal unit including a disposer, disposable waste receptacle, and sterilant recycling system. During the destruction and sterilization operation, the sterilant recycling system introduces sterilant into the disposer to sterilize the contaminated medical sharps while the disposer is grinding the sharps into small fragments. Once the medical waste is reduced to small fragments and is sterilized, the reduced waste is deposited in the disposable waste receptacle. Excess disinfectant flows through the waste receptacle and is recovered by a reservoir to be recycled. After the waste receptacle is full, the waste receptacle is easily removed from disposal unit, without the reduced medical waste coming into contact with human hands, and is disposed as ordinary waste.

Abstract: The present invention relates to a method and apparatus for shredding annular objects, preferably the carcasses of discarded tires, into multiple uniformly shaped pieces. More specifically, the present invention includes a novel multi-stage apparatus which automatically divides tire carcasses into two side wall sections and a tread section. The apparatus then further divides the wall and tread sections into multiple relatively small, uniform pieces. The pieces so formed are suitable for a variety of purposes, including recycling.

Abstract: A solid waste recycling system for use in recycling containers containing residual liquids. The recycling system includes a housing having an inlet for receiving the containers. Two pluralities of oppositely rotating rotary knives shred the containers into shreds. A conveyor transports the shreds toward a drying zone. One plurality of spray heads washes the containers with hot water during shredding and another plurality of spray heads washes the shreds with hot water while the shreds are being conveyed toward the drying zone. The hot water and residual liquids are drained off in the drainage zone. The washed shreds are dried in the drying zone. The dried shreds are then stored in the storage receptacle, which is slidably removable from the housing. The rotary knives, drainage zone, dryer and conveyor are all located inside the housing, which is optionally mounted on rollers to provide a portable system.

Abstract: A coffee grinder which has several different automatic grinding capacities is connected to a coffee brewer which has several different automatic brewing capacities by a control that inhibits brewing of all but the corresponding brew capacity following grinding of a quantity of coffee. The grinder is also inhibited from grinding any more coffee until the appropriate brew cycle of the coffee brewer is started. Once the corresponding brewing cycle is selected, the coffee grinder is reset and any grinding capacity may be selected. A calibration mode for the coffee grinder and the coffee brewer is provided wherein the duration of the grinding cycle or brewing cycle, respectively, is set by manually initiating the cycle and then halting of the cycle when the appropriate capacity is reached. The duration of the cycle is then set for subsequent automatic operation.

Abstract: A sharps disposal apparatus is provided for reducing contaminated medical sharps into unrecognizable, ordinary waste. The disposal apparatus comprises a disposal unit including a disposer, disposable waste receptacle, and sterilant recycling system. During the destruction and sterilization operation, the sterilant recycling system introduces sterilant into the disposer to sterilize the contaminated medical sharps while the disposer is grinding the sharps into small fragments. Once the medical waste is reduced to small fragments and is sterilized, the reduced waste is deposited in the disposable waste receptacle. Excess disinfectant flows through the waste receptacle and is recovered by a reservoir to be recycled. After the waste receptacle is full, the waste receptacle is easily removed from disposal unit, without the reduced medical waste coming into contact with human hands, and is disposed as ordinary waste.

Abstract: An apparatus for securing danger zones in a bale opening system. The apparatus includes a first beam transmitting/receiving device and a beam guide for guiding the first beam in a generally U-shaped course. A space between the legs of the U-shaped course accommodates conveyor belts on which bales are supported, the bale opener in any position along a path of travel thereof, a shuttle carriage in any position along a path of travel thereof and at least one part of a loading station. The shuttle carriage travels between a loading station where a bale is loaded on the carriage and a location on a conveyor belt where the carriage deposits the bale. The apparatus further has second and third beam transmitting/receiving devices for generating and detecting second and third beams each having a course connecting legs of the U-shaped course in a zone of the loading station. The second beam is more remote from the base of the U-shaped course of the first beam than the third beam.

Abstract: A waste disposer having a rotatable shredding element for grinding waste in a flushing liquid, an outlet for discharging ground waste material in liquid to a drain, an electrically-powered motor for driving the rotatable shredding element and a source for supplying flushing liquid the disposer that includes a detector for sensing the amount of electrical current flowing to the motor. The system includes, at least, one valve for controlling the flow of flushing liquid to the disposer which valve is controlled by means of a controller that is responsive to the electrical current detector. The controller increases the amount of flushing liquid falling into the disposer in response to a detected increase in the amount of electrical current flowing into the motor. The invention optionally includes a second valve for controlling flushing liquid to the disposer at a lower rate, which second valve is opened whenever the electrical is activated.

Abstract: A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containers down a drop chute and returns the empty containers to ground level. The dumped waste is shredded and is either injected into an incinerator or is discharged downwardly. The entire system is enclosed and can be maintained at either a negative or positive pressure for receiving radioactive or hazardous wastes, or at a reduced oxygen environment for receiving flammable hazardous waste. Containerized waste is received through air locks which include sliding doors that are supported entirely about the peripheries when sealed for purposes of explosion resistance. The injector discharge tube includes a slide box in which a pair of conduit segments are mounted and can be positioned such that one or the other of the segments is connected to the output conduit.

Abstract: A method and means for measuring a characteristic, in particular one associated with particle size, of any of the feed, underflow or overflow streams of a hydrocyclone is provided. Information as to the flowrate and density of the feed stream as well as the angle of flare or other related variable associated with the shape of the underflow stream are fed to processing means which applies a formula or algorithm, which is usually empirically derived, to such information to provide a value of the required characteristic. The characteristic may be related to particle size, particle size distribution in any of the streams or the liquid content or the flowrates of solids or liquids in the underflow or overflow. Measurement apparatus comprising a dedicated hydrocyclone is also provided.

Abstract: A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containers down a drop chute and returns the empty containers to ground level. The dumped waste is shredded and is either injected into an incinerator or is discharged downwardly. The entire system is enclosed and can be maintained at a negative pressure for receiving radioactive wastes, or at a reduced oxygen environment for receiving flammable hazardous waste. Containerized waste is received through air locks which include vertically sliding doors that are supported entirely about the peripheries when sealed for purposes of explosion resistance. The injector discharge tube includes a slide box in which a pair of conduit segments are mounted and can be positioned such that one or the other of the segments is connected to the output conduit.

Abstract: A segregated waste disposal device is disclosed which includes a plurality of waste receptacles provided in a main housing, each of the plurality of waste receptacles receiving one of a plurality of distinct waste products, respectively, including glass and metal. An opening within the main housing receives at least one of the glass and metal waste, and the weighted lid connected to the main housing crushes waste deposited into the opening. The lid may be opened either by hydraulic or mechanical spring mechanisms and a grate member provided within the opening and beneath the weighted lid allows crushed glass to free-fall therethrough into a predetermined receptacle. A sweep arm sweeps remaining crushed waste off of the grate into a waste receptacle other than a waste receptacle containing crushed glass.

Abstract: A pretreating plastic waste device including a tank containing a liquid to which the plastic waste is introduced, a washing pump, a dripping drum, and a dewatering device comprising a press-screw adapted for separating the washed waste from the washing liquid and a drying drum fed by a hot air blower, and a filtration vat. A programmable controller receiving signals from various level and temperature sensors and various working parameters allows total control, at all stages, of the waste pretreatment cycle. The programmable controller is associated with a screen for displaying error messages and a control desk for allowing direct selective intervention at the level of the concerned elements.

Abstract: In the disposal device for paper documents according to the present invention, the feeding of paper that is to be disposed can be done either automatically with a feeding unit or manually from a manual inlet. Therefore, the disposal of sensitive paper documents can be carried out sheet by sheet by placing the paper on the automatic paper feed unit while paper documents which do not require any security measures may be manually fed into the disposal device for an immediate shredding process. Therefore, the present invention allows both appropriate and efficient disposal of paper documents without regard to whether the paper documents to be disposed require security measures or not.

Abstract: This invention provides a method and a combination for automatically oiling a paper shredder with oil drops when it is running in the reverse direction, and after a predetermined running time in the forward direction.

Abstract: A material level sensing device for detecting when the level of unprocessed material has reached a predetermined threshold includes a contact-type probe extending from a housing into a retaining bowl where unprocessed material is collected before processing. Within the housing is disposed a proximity sensor. The housing itself is suspended from an overhanging support. When the material level reaches the predetermined threshold, the material displaces the material level sensor, which displacement is sensed by the proximity sensor. The proximity sensor then sends a signal to an external system indicating that the material has reached the threshold.

Abstract: A segregated waste disposal system is disclosed which includes a plurality of separate bins for receiving paper, plastics, glass, and metal respectively. Two openings are provided within the overall unit, one of the openings receiving paper/plastics, the other opening receiving glass/metal. The respective openings perform different disposal functions with respect to the materials inserted therein, whereby the glass/metals opening compresses the glass/metals such that the compressed glass will immediately fall through a grate into a glass bin and a sweep arm sweeps compressed metal to an adjacent metals bin. The paper/plastics opening compresses the paper/plastic and subsequently shreds the compressed material. Deflection to a respective paper/plastics bin is determined by an operators instruction achieved via a selection panel provided in connection with the waste disposal system.

Abstract: An apparatus according to the invention is for treating waste materials of foam resin products having been used mainly as packing or wrapping materials, which is provided with a crushing room furnishing stationary cutting edges and rotatably moving cutting edges at the lower part of a hopper into which the waste foam resin materials are thrown, and at the outside of the crushing room, a cylindrical volume shrinking mechanism which receives the destroyed resin products and send them in succession, heats to soften and fuse them one another, and effecting heat and pressure thereto so as to de-foam and extrude the resin like a hot chewing cake or a hot birdlime. The cylindrical volume shrinking mechanism has an extruding nozzle opening upward, from which the resin is charged into a metal mold cylinder and when this charging amount reaches to a certain level, the operation of the cylindrical volume shrinking mechanism is stopped.

Abstract: A disposal system for the grinding, sorting, and sanitization of medical waste with sanitizing liquid includes a hollow housing. The hollow housing includes a grinding device to grind the medical waste, a receiving device to receive and sort the ground medical waste into lighter and heavier fragments and sanitize the same. The receiving device is pivotally mounted in the housing so as to be rotated outwards therefrom. The housing includes a returning device and a discharging device for respectively returning and discharging the sanitizing liquid. The housing includes an electrical control device to activate the grinding device, the receiving device, the returning device and the discharging device.

Abstract: A method for the determination of the value of a property of the material within a mill during the comminution of solid material within the mill comprises the steps of:(a) detecting the noise intensity of milling by means of an analog electrical signal, the intensity of which is proportional to the intensity of the noise in the audio frequency range,(b) converting the analog signal to a digital signal,(c) passing the digital signal through a digital band-pass filter to select at least two frequency bands, and(d) analyzing the data from the bands by means of a multivariate statistical technique to obtain the value of the property. The method is particularly suitable for determining the particle size distribution of material being ground in a ball mill.

Abstract: A material treating apparatus is used for treating powdery, granular and conglomerate materials. The material treating apparatus includes a material supply apparatus for transferring the materials to a predetermined position, particularly for supplying the materials to an automatic crusher. The material treating apparatus includes a crushing system having a crushing vessel transferring unit. The material treating apparatus further includes an analysis sample transferring apparatus particularly suitable for transferring samples formed by a press to a fluorescent X-ray analyzing apparatus. The material treating apparatus includes a fluorescent X-ray analyzing system which is capable of automatically analyzing samples of various kinds. An analyzing method is carried out by the use of the above material treating apparatus. The analyzing method includes a method of vitrifying an inorganic material, which is preferably used for obtaining samples to be analyzed by the X-ray fluorescence analysis.

Abstract: A gap sensor comprising a C-type core (38, 62, 126) wrapped with a coil (44, 68, 130), and arranged to be responsive to the variable reluctance in a magnetic circuit passing through the core, two refiner plates (28a, 28b, 194, 198) and the gap (34, 90) between the plates. The two sensing ends (134, 136) of the transducer core legs (128, 132) are positioned in close proximity to the circumferential surfaces, or rims (82, 86, 212, 214) of the two spaced apart refiner plates, respectively. The magnetic field generated by the coil follows a magnetic path or circuit including the core (38), the radial gaps (46), between the sensor and the discs (16, 18), the refiner disc material, the plates (28a, 28b) mounted on the disc, and the clearance gap (34) between the two refiner plates.

Abstract: An apparatus and method for supplying a controlled flow of fluid transported solid particles, in particular, pulverized coal by the controlled injection of a fluid, such as a gas like compressed air, into at least one feed pipe. The flow of coal in feed pipes is controlled by selectively reducing or increasing the flow of primary air to achieve a balanced burner operation.

Abstract: Apparatus for the hydride-dehydride cycling comminution of metal hydride, hydrogen storage alloy materials, which comminuted hydrogen storage alloy material is adapted for use in the negative electrode of hydrogen storage, electrochemical cells.

Abstract: A method and apparatus for producing uniform pulp yields, wherein at least a refiner is controlled in accordance with the UV absorbance of the lignin dissolved in the digester cooking liquor, thereby to produce for a given quantity of wood chips a uniform pulp yield. A backflow control valve is automatically adjusted to maintain uniform flow of a sample of the digester cooking liquor through a UV analyzer, and a flushing arrangement is provided for flushing out contaminates such as sulphur dioxide from the system. Preferably the refiner is of the two-stage type, the first stage being automatically adjusted as a function of the UV absorbance of the digester cooking liquor, and the second stage being automatically adjusted as a function of the freeness of the output fiber slurry. Also, one or more of the cooking parameters is controlled by the UV analyzer to control the fiber yield.

Abstract: A fluidized granulating and coating apparatus having a cylindrical treating vessel provided with at least one spray nozzle, at least one air supply duct and one exhaust duct, and a downwardly converging frusto-conical portion. The spray nozzle is disposed at a position below the interface of the fluidized particles within the region of the frusto-conical portion. At least one compressed air nozzle is disposed at a level below the interface of the fluidized particles and within the range of the frusto-conical portion. Disclosed also is a fluidized granulating and coating method which makes use of this apparatus. With the apparatus and the method of the invention, it is possible to produce granular products such as a slow-effecting or long-lasting pharmaceutical product with a high quality and homogeneity at a high yield, by coating cores of spherical granules with a coating composition containing the medical component of the desired property.

Abstract: An apparatus for regulating an agitator mill for comminution, deagglomeration and dispersion of grinding stock present in the form of a suspension is provided. To attain a constantly uniform grinding stock fineness, a device is provided for keeping the specific energy input constant, the specific energy input being determined by the quotient of the power introduced into the grinding stock and the grinding stock mass flow. A device is also provided for detecting the distribution of the auxiliary grinding bodies in the grinding chamber. The distribution of the auxiliary grinding bodies can be determined by detecting the pressure drop in the grinding chamber. Further, the distribution of the auxiliary grinding bodies can be detected by means of at least two partial cooling chambers connected parallel to one another, with individual heat flows being detected via the partial cooling chambers.

Abstract: A safety control system for a coal pulverizing mill is disclosed. The control system utilizes measurements of the net oxygen level and the carbon monoxide equivalent (CO.sub.e) level of the combustible gases within the pulverizing mill. First levels of the net oxygen and the rate of carbon monoxide equivalent change in the pulverizing mill are utilized in a control logic system to actuate alarms. Second levels of the net oxygen and the carbon monoxide equivalent (CO.sub.e) level in the pulverizing mill are utilized to accomplish the inerting of the mill.

Abstract: A vertical wet stirred ball mill is provided according to this invention, wherein a slurry raw material fed from the top of the mill body is stirred together with a grinding medium in said mill body under pressure and the material is gradually exhausted from the bottom of said mill body as it is milled. A spring-loaded conical separation valve is fitted at an exhaust port of said body. The separation valve retracts when the pressure within the mill body is increased due to plugging, thereby the annular clearance around the separation valve is enlarged to increase the amount of exhaust, leading to elimination of the plugging.

Abstract: A wet grinding machine which includes a grinder head, an annular stator having a mounting portion mounted on the grinder head and joined by a body portion to a skirt portion, and a rotor rotatably mounted on the grinder head. The rotor includes a hub portion joined by an annular body portion to an annular skirt portion inside of the annular stator. Outwardly extending slots in the body portion of the rotor define shearing blades in the body portion. Outwardly extending shearing slots in the body portion of the stator are opposed to the shearing blades. Each of the shearing slots slopes and overlaps at least one adjacent shearing blade. As the rotor turns, each of the blades is constantly opposed to and addresses at least one of the shearing slots. There are inlet openings in the stator skirt and in the rotor skirt.

Abstract: A bale opener includes a carriage arranged for a back-and-forth travel in a path along a fiber bale series; a tower supported on the carriage and a cantilever mounted on the tower and arranged for vertical displacements with respect to the tower, an opening device supported in the cantilever and arranged for removing fiber from the bale tops during travel of the carriage; a sensor assembly arranged for travel along the fiber bale series for emitting first signals characterizing bale heights; and a control device operatively connected to the sensor assembly for receiving the first signals. The sensor assembly comprises two sensors mounted on the tower or the cantilever and spaced vertically from one another. There is further provided a length position determining device for generating second signals representing longitudinal positions of the cantilever along the travel of the carriage. The length position determining device is connected to the control device for receiving the second signals.

Abstract: A ball mill comprising a container for receiving a material to be pulverized and pulverizing balls, and an agitator including arms rotatable on a vertical axis. The arms carry elongate agitating members extending along and revolvable about the vertical axis. All of the arms are disposed in a position above the material and the balls in the container. The agitating members are arranged substantially equidistantly on a circle or circles around the vertical axis. The container defines gas inlet ports in a bottom region thereof for receiving a gas during a pulverizing operation.

Abstract: A pulverizer auxiliary lubrication system (12) particularly suited for use with a pulverizer bowl mill (10) of the type that is operative for effecting the grinding of material. The subject auxiliary lubrication system (12) is designed to be employed to supplement the pulverizer bowl mill's (10) existing lubrication system (48) whereby the beneficial features of the latter are retained while the disadvantages thereof are eliminated. To this end, the subject auxiliary lubrication system (12) includes an oil pump (72), an electric motor (74) coupled (76) to and operative for driving the oil pump (72), one or more filters (78), a pressure relief valve (80), connecting piping (82, 84, 86, 88), gauges (68, 94, 96) and controls (90, 92, 98, 100, 110), and means to supply oil to (86, 88) and draw oil from (82, 84) the pulverizer bowl mill (10).

Abstract: A control system (40) particularly suited for effecting control over the fineness of the particles that are gound, i.e., pulverized, in a bowl mill (10) of the type that is designed to be employed for purposes of pulverizing coal. The subject control system (40) is operatively connected in circuit relation with the conveying means (64) by means of which the particles are conveyed from the bowl mill (10) after being ground therewithin. In addition, the subject control system (40) is also operatively connected with the controls (58, 60) of the bowl mill (10). Accordingly, the subject control system (40) is operative to make measurements of the particles being discharged from the bowl mill (10) and based on the information obtained from such measurements effect the changes in the control settings of the bowl mill (10) as required.

Abstract: A combination inerting and fire extinguishing system particularly suited for employment in a pulverizing bowl mill (10) of the type that is operative for effecting the grinding of material and that includes a substantially closed separator body (16) in which a grinding table (18) is supported for rotation relative thereto and a plurality of grinding rolls (22) are also supported therewithin such that the plurality of grinding rolls (22) cooperate with the rotating grinding table (18) to effect a grinding of the material disposed upon the grinding table (18). The subject inerting and fire extinguishing means includes a continuous purging means, a backup inerting means, a pulverizing bowl mill clearing means and a water injection fire suppression means. The continuous purging means is operative during any inerting sequence to cause an inerting medium to flow continually through the pulverizing bowl mill (10) so as to ensure that there is no buildup of volatile gases therewithin.

Abstract: A comminution device is provided which has a rotatable turbine mounted in a housing for causing an air flow through an expansion chamber. Material to be comminuted is carried in an air stream through the expansion chamber where it is rapidly decompressed causing it to explode. The turbine is made of a plurality of air foil blades mounted on a backing plate and is dimensioned in close tolerance to its housing. Exchangable expansion chambers are provided to vary the rate of pressure reduction which affects the size of the communited material. The shaft of the turbine is mounted in oil cooled bearings to increase the life and efficiency of the bearings and turbine blades.

Abstract: A control system (40) particularly suited for effecting control over the fineness of the particles that are ground, i.e., pulverized, in a bowl mill (10) of the type that is designed to be employed for purposes of pulverizing coal. The subject control system (40) is operatively connected in circuit relation with the conveying means (64) by means of which the particles are conveyed from the bowl mill (10) after being ground therewithin. In addition, the subject control system (40) is also operatively connected with the controls (58, 60) of the bowl mill (10). Accordingly, the subject control system (40) is operative to make measurements of the particles being discharged from the bowl mill (10) and based on the information obtained from such measurements effect the changes in the control settings of the bowl mill (10), as required.

Abstract: The present invention relates to a rotation crusher which treats refuse and seeks to prevent explosions by controlling the volume of steam fed into the crusher to keep the temperature inside a main body of the crusher between about 70.degree. C. to 100.degree. C. so that the steam content may be regulated to exceed a certain value to keep the oxygen content below an explosion preventive critical value, thereby preventing completely explosions inside the crusher.