Abstract: A sieve is disclosed for use in a plansifter. The sieve can be changed between backwire and combined sieve configurations without the height of the sieve changing, and while maintaining contact between a frame of the sieve and the sieve box. A dynamic combined cleaner also is disclosed in which the center of gravity of the cleaner dynamically changes based on inertial movements applied to the cleaner.

Abstract: A device for separating broken fragments of particles from the particles, comprising a floor arranged such that it receives the particles and the broken fragments, connected to a vibration device arranged such that it makes the floor undergo a vibratory movement, the floor being pierced with orifices to allow the broken fragments to pass through the orifices without allowing the particles to pass therethrough, and a ceiling arranged substantially parallel to the floor. The device further comprises an actuator arranged so as to move the ceiling between a first position in which it is located at a distance from the floor and a second position in which it is in contact with the floor such that the broken particle fragments stuck in the orifices are expelled therefrom.

Abstract: A lump coal size sorting grate comprising parallel bars is provided with three spaced apart, parallel cleaning combs which can be individually activated to clean the sizing grid of lodged coal lumps in a predetermined sequence so that the entire sizing grid is never closed during a coal sorting operation. The cleaning combs are made of spaced, parallel bars which can be pivoted upwardly, between and through the bars of the sizing grate. An adaptive system which senses and responds to a clogged condition in the grate can be provided by sensing crusher motor current or, in the alternative, sensing grate bar deflection using strain gage transducers.

Abstract: A continuous cleaning system to prevent clogging of screens in screening machines used to sort materials such as aggregates, such system comprising positioning a cleaning device such as a chain in line with the length of and on top of, a screen to be cleaned, and then using a motor assembly to rotate said cleaning device thereby moving it back and forth across the top of said screen, so that substantially the entire area of the top of said screen comes in contact with said rotating cleaning device, which taps or otherwise contacts the surface of said screen as it moves back and forth across the top of a screen deck, thereby dislodging any dust or other material that might otherwise clog or block the openings in said screen. In a preferred embodiment, a motor rotates the cleaning device which has the effect of driving it back and forth along a tight cable on which said pulley travels. The speed, power, and direction of the motor are subject to controls, which may be easily set by an operator.

Abstract: A sprinkling apparatus for sprinkling powder material onto food products. The apparatus includes a hopper for holding the powder material that is mounted above a conveyor. A drum is rotatably mounted within the hopper and stirs the powder material. The drum has a rotation surface provided with recesses thereon for receiving the powder material. A narrow passageway is provided between the rotation surface of the drum and an inner wall of the hopper. The narrow passageway presses the powder material against the rotation surface of the drum. A wiper is attached to an exit opening of the hopper and wipes the compressed powder material from the rotation surface of the drum. The wiped powder material leaves the exit opening of the hopper and is sprinkled on the food products.

Abstract: An apparatus for sieving a particulate material into selected size fractions. This apparatus includes a screen for separating the particulate material into an undersize fraction and an oversize fraction, and having an inlet end and an outlet end. The apparatus further includes a rotating/oscillating drive for rotating or oscillating the screen about an axis thereof, and a twin phase drive for driving the screen in a vertical direction and an axial direction.

Abstract: The sieve efficiency can be increased in an improved sieve apparatus in such a way tat the sieve apparatus is equipped with a compulsory mixing device (5). By means of this, during the sieve process, the sieve product, which is moving forward along the main flow direction (1) to a delivery end (11), is thoroughly mixed, which produces the desired increase in sieve efficiency.

Abstract: A manual sifter including a rotor overlying a sifter screen and rotatable in response to longitudinal reciprocation of a drive arm engaging a crank wheel fixed to the rotor. The drive arm includes a projecting pin engaged within an elongated slot of the crank wheel, the drive arm having a cam edge thereon engage with the crank wheel to vary the torque applied to the rotation of the crank wheel as the arm reciprocates.

Abstract: A self-cleaning pressure filter system including a housing having an unfiltered liquid inlet and a filtered liquid outlet, a filter element of substantially constant cross section having an interior communicating with the unfiltered liquid inlet and an exterior communicating with the filtered liquid outlet for filtering solids from the liquid and wherein filtered out solids are left in the interior of the filter element. A cleaning unit is moved axially along the interior of the filter element and carries at least one radially expansible, substantially annular cleaning member movable in an axial path along the interior face of the filter element for removing solids accumulated thereon. In an least one embodiment of the invention, the radially expansible cleaning member is a split ring circumferentially exhaustible by a spring member. In at least one embodiment of the invention, axial reciprocation of the cleaning member is achieved without need to reverse a rotating member.

Abstract: Disclosed is a vibratory sieve for separation of fibrous materials from materials containing them, the vibratory sieve comprising a sieve body and a mechanism for imparting vibration to the sieve, the sieve body including a screen to be vibrated by the mechanism, the sieve being adapted to convey a mixture of water and the materials containing the fibrous materials onto the screen through meshes of which finer particles and water are passed by the vibration of the screen, leaving the fibrous materials on the screen, the sieve being characterized in that the sieve is provided with an annular member which is movable on the screen surface by the vibration of the screen and whose movement is confined by an inlet member in such a way that the mixture of water and the materials containing the fibrous materials is placed inside the annular member.

Abstract: One has aimed at providing a simple, reliable and efficient purification device for the mechanical purification of sewage. At this end, the sewage purification device (1) comprises substantially a strainer pipe (2), which may be designed to be coupled to a sewage pipe (P1), and which is perforated in that portion thereof which, in the position of use, constitutes the bottom portion. The strainer pipe (2) is assigned a water collecting pipe (4) underlying the former in the position of use, extending parallely thereto and, preferably, being sealingly connected thereto, said water collecting pipe (4) being adapted to receive mechanically purified sewage from the strainer pipe (2). The water collecting pipe (4) is open or, respectively, provided with holes, perforations or slots in the portion thereof being opposite to the strainer pipe (2).

Abstract: A self-cleaning filter comprises a filter element in a housing. A cleaning unit, movable with respect to the filter element, removes filtered-out solids from the upstream face of the filter element. The cleaning unit includes an axially movable cleaning element engageable with the filter element.

Abstract: A granular material cleaning apparatus and method. The apparatus has an upright container housing assembly; an inlet housing assembly pivotally connected to the upright container housing assembly to receive a contaminated granular material; and material inlet control assembly mounted to the upright container housing at an upper inlet portion thereof. A discharge housing assembly is mounted to the upright container housing assembly; and a material flow channel assembly is mounted within the container housing assembly generally underneath the material inlet control assembly to initially receive the contaminated granular material at an upper end thereof and pass the same under gravity moving transversely on the material flow channel assembly until discharged into the discharge housing assembly.

Abstract: The apparatus includes a housing having an inlet for coal and the like and two outlets, a sizing grate, a comb, and means for moving the comb relative to the grate for dislodging granular material clogged therein. The grate is affixed to the housing and provides a plurality of openings which are sized to allow granular material of a predetermined size to pass therethrough to the first outlet, while granular material of a greater size is the second outlet to a crusher. The invention also includes a method of automatically sizing granular material using a self-cleaning grate assembly.

Abstract: A water-solids separator including a casing forming a reservoir and having an inlet and an outlet, a perforated filter screen assembly positioned in said casing between said inlet and said outlet, an overflow weir in front of the outlet to define the depth of water in the reservoir, a baffle plate on the inlet side of said filter screen assembly to direct incoming water toward the filter screen assembly and a conveyor assembly on each side of the filter screen assembly for cleaning the surfaces of the filter screen assembly, each conveyor assembly including a number of wiper blade flights located in positions to move in abutting engagement across the surfaces of the filter screen assembly, each flight including a resilient wiper blade or brush to clean the perforations in the filter screen assembly.

Abstract: The present invention provides a sprouting bean refinement apparatus including a vibration frame with its bottom plate composed of a perforated screen, a vibrator for providing vibration to the vibration frame, and a cleaning mechanism contacted with the perforated screen so that relative sliding motion is generated between the cleaning mechanism and the perforated screen to remove deposits on the top side of the perforated screen.

Abstract: A vibratory separator for separating drilling solids from drilling mud after return from the well bore, including a separator screen and a screen cleaning device positioned adjacent the screen. The screen cleaning device is supported by suitable means to permit filtered mud to pass freely through the device for collection below. The screen is a fine wire mesh mounted in a unique manner to the separator housing such that it vibrates during operation of the system to keep drilling solids from clogging the wire mesh and restricting the flow of drilling mud. The screen cleaning device serves to support the screen and mud thereon in addition to vibrating and wiping the screen as the device rotates due to the orbital oscillatory vibrations of the system.

Abstract: The invention relates to a system which automatically cleans the grates or bars on a vibrating bark, sawdust and material conveyor. It does this by moving the teeth which are disposed on an oscillating cleaner back and forth from the bottom side of the grate or bar network in a raking action. It changes direction automatically at each end of travel.