EP3165285A1 - Zerkleinerer für biomassematerial - Google Patents

Zerkleinerer für biomassematerial Download PDF

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Publication number
EP3165285A1
EP3165285A1 EP16197480.3A EP16197480A EP3165285A1 EP 3165285 A1 EP3165285 A1 EP 3165285A1 EP 16197480 A EP16197480 A EP 16197480A EP 3165285 A1 EP3165285 A1 EP 3165285A1
Authority
EP
European Patent Office
Prior art keywords
bars
rotary
members
shear
biomass material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16197480.3A
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English (en)
French (fr)
Inventor
Raymond Dueck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InnovaatCom International Inc
Original Assignee
InnovaatCom International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by InnovaatCom International Inc filed Critical InnovaatCom International Inc
Publication of EP3165285A1 publication Critical patent/EP3165285A1/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C2018/188—Stationary counter-knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • B02C2201/066—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage for garden waste

Definitions

  • This invention relates to a shredder for biomass material which includes at least one rotary drum supported in a housing with a cylindrical wall and a plurality of outward shear members spaced longitudinally and radially of the cylindrical wall so as to pass between bars in a shearing action.
  • the arrangement of the present invention is particularly but not exclusively useful to provide a shredder of low speed and low power.
  • the shredder may include a single drum or a pair of cooperating drums where part or all of the shearing action occurs between the shear members and stationary bars supported by the housing.
  • a shredder like that disclosed in this specification may also be suited for directly feeding a composting machine.
  • the composting machine which comprises a rotary vessel thus includes an input conveyor supported at a position coaxial with the rotary vessel and a tubular support member which defines one location at which the rotary vessel is supported in its rotation about its axis.
  • the input conveyor is held at a suspended position within the tubular support member such that the tubular support member is rotatable about the input conveyor.
  • Rotary shredders are known in many designs commonly used for shredding paper which requires little power.
  • the present arrangement is proposed for use with biomass material such as tree cuttings, waste wood materials and similar combustible products which can be shredded to provide feed for a furnace or can be compostable so as to be used in a composting process.
  • biomass material such as tree cuttings, waste wood materials and similar combustible products which can be shredded to provide feed for a furnace or can be compostable so as to be used in a composting process.
  • Such shredders are typically high speed with a high power requirement so that the assembly is necessarily of high cost taking it out of reasonable financial reach of individual farmers, home owners and small businesses who want to have a dedicated shredder at their property to provide fuel.
  • shredded biomass material is suited for composting.
  • Shredders may be arranged in order to directly feed a composting machine.
  • typical constructions of composters may not be suited for being continuously and directly fed by a composter in a manner which allows uninterrupted operation of the composter.
  • a shredder for biomass material comprising:
  • shear members are arranged in pairs with each pair including an elongate structural member extending through the hollow interior of the rotary member on each end of which respective one of the pair is mounted.
  • elongate structural members extend diametrically through the rotary member.
  • pair of shear members and the elongate structural member thereof are formed from an integral plate with the leading surface of each shear member being forming at one edge of the plate.
  • each of the shear members has a leading surface which is concave in a direction longitudinally of the leading surface so as to tend to grasp and pull the biomass material.
  • said at least one rotary member comprises first and second generally cylindrical rotary members mounted for rotation about parallel axes in opposed directions.
  • said at least one rotary member is supported so as to define at a plane of closest approach with a surface within the housing a space therebetween and forming a throat on a feed side of the plane, the housing defining said feed opening arranged such that the biomass material fed into the feed opening enters the throat to pass through the space.
  • the plane contains the axes of the rotary members and the space is defined between the rotary members.
  • the space is defined between the rotary member and a wall of the housing.
  • Another important independent optional features is that there is provided a plurality of bars carried within the housing in fixed relation thereto at longitudinally spaced positions relative to said axis of said at least one rotary member such that said bars define the respective cooperating components acting in the shearing action with the shear members of said at least one rotary member.
  • At least some of the bars are mounted on an upper support member located in the throat so as to hold the biomass material above the plane of closest approach until the respective shear member grasps and pulls the material past said at least some of the bars.
  • the bars which are located on a common side of the upper support member are spaced each from the next by a distance greater than a thickness of the shear members.
  • the bars on the common side are positioned with spaces sufficient to allow the material to pass through.
  • the bars comprises first bars on one side of the upper support member and second bars on the other side of the support member with the first bars being longitudinally offset from the second bars.
  • the bars include a front edge facing the leading edges of the shear members which front edge is inclined downwardly and outwardly from the support member toward the wall of the first rotary member to better shear with the front edge of the shear member as it passes.
  • each of the bars has an endmost edge spaced from the support member so as to lie immediately adjacent the wall of the rotary member.
  • the bars are located at a height which is substantially aligned with a tangent across the top of the walls of the rotary members.
  • the upper support member comprises a longitudinal support beam positioned in the throat parallel to the axes at a height such that the radially outermost edges of the shear members pass the beam and so that a bottom edge of the bars is at a height above the plane of closest approach so as to leave a space underneath the bars in the throat before the plane.
  • each shear member on each of the rotary members is spaced longitudinally to leave a space between each shear member and the next on the rotary member at least equal to the thickness of one of the bars.
  • Another important independent optional feature is that at least some of the bars are mounted on a lower support member located below the plane of closest approach.
  • Another important independent optional feature is that the bars mounted on the lower support member are spaced by a distance substantially equal to a width of the shear members.
  • each shear member cooperates with two of the bars mounted on the lower support beam which are immediately on opposite sides of the shear member.
  • the bars mounted on the lower support member comprise first and second bars each mounted so as to cooperate with the first and the second rotary member, respectively, the bars on the lower support member having a thickness substantially equal to a thickness of the shear members so that the first and second bars lie side by side with side surfaces in contact.
  • the bars on the lower support member have an upper edge extending upwardly and outwardly from the support member toward the respective rotary member.
  • the upper edges of the bars on the lower support member are arranged in side elevation to extend downwardly and inwardly in a V-shape to intersect at a central apex.
  • the upper edges of the bars on the lower support member are arranged to lie approximately in a radial plane of the axis of the respective rotary member so as to generate a shearing action with the shear members of the respective rotary member as they pass the upper edges.
  • Another important independent optional feature is that at least some of the bars are mounted on the housing to one side of said at least one rotary member.
  • the housing locates a plurality of apertures angularly of said respective cooperating components in a rotational direction of said at least one rotary member so that in movement in said rotational direction the shear members first pass the respective cooperating components and then over the apertures, the apertures being sized in a manner so as to selectively allow passage of the biomass material to a discharge outlet after said shearing action.
  • the apertures are suited for cooperation with a plurality of the shear members of the respective rotary member in a shearing action as the shear members pass over the apertures. That is, the biomass material which becomes lodged in the apertures that is too large to pass therethrough is sheared as the respective shear member passes over those apertures.
  • biomass material may be circulated back to the throat by the shear members so as to pass by the respective cooperating components in a subsequent shearing action.
  • apertures are located at spaced positions along the length of the respective rotary member.
  • Another important independent optional feature is that there is provided a plurality of elongate protrusions along an inner surface of the housing that respectively project towards the respective rotary member.
  • the protrusions are oriented parallel to the axes of the rotary members and disposed at spaced positions intermediate groupings of the apertures.
  • shredder comprising the at least one rotary member, such as that having the single rotary member or the first and second rotary members may be used in combination with a composting machine, which is directly fed by the shredder, for composting the biomass material.
  • the shredder is used for reducing the biomass material from a first size received at an inlet of the shredder to a smaller second size discharged from the discharge outlet of the shredder.
  • the composting machine is located at a distance from the shredder within a common processing facility.
  • composting machine includes:
  • a shredder for biomass material comprising:
  • the elongate structural members extend diametrically or transversely through the rotary member.
  • the arrangement of elongate structural members defining the shear members on the ends provides a weight reduction of the drum thus reducing the mass required for the outer cylindrical wall.
  • each of the shear members has a leading surface which is concave in a direction longitudinally of the leading surface so as to form a hook portion which tends to grasp and pull the biomass material though the throat.
  • pair of shear members and the elongate structural member thereof are formed from an integral plate with the leading surface of each shear member being forming at one edge of the plate.
  • the plate can then be relatively narrow in width and thus relatively light in weight and is held in its position within and through the rotary drum by the wall of the drum and thus forming a simple light weight construction.
  • cylindrical wall is imperforate, that is it is a solid continuous wall forming a cylindrical drum.
  • outer wall can be provided which have holes or have a structure other than a drum.
  • cylindrical wall is open at the ends for light weight construction as the ends do not cooperate with the biomass material.
  • each shear member is spaced both longitudinally and angularly of its next adjacent shear member. That is the shear members are not side by side but staggered to avoid high pulses of power which occur if shear members shear at the same time.
  • the at least one rotary member comprises first and second rotary members mounted for rotation about parallel axes in opposed directions, the first and second members being supported so as to define, at a plane of closest approach containing the axes of the rotary members, a space therebetween and forming a throat on a feed side of the plane.
  • the housing defines the feed opening which is arranged such that the biomass material fed into the feed opening enters the throat to pass through the space.
  • the shear members are preferably arranged in the array such that the shear members of the first rotary member do not cooperate in a shearing action with the shear members of the second rotary member, that is they are angularly offset.
  • a top grate member in the throat including a support member in the form of a beam extending along the throat generally parallel to the axes.
  • a plurality of first bars extend at right angles to the support member at spaced positions along the support member for cooperation in a shearing action with a plurality of the shear members of the first rotary member and a plurality of second bars extend at right angles to the support member at spaced positions along the support member for cooperation in a shearing action with a plurality of the shear members of the second rotary member.
  • first bars are longitudinally offset from the second bars so that they can cooperate with the shear members of the first and second rotary members which are also longitudinally offset.
  • first and second bars are spaced each from the next by a distance greater than a thickness of the shear members so that they are positioned with spaces sufficient to allow the material to pass through.
  • the bars include a front edge facing the leading edges of the shear members which front edge is inclined downwardly and outwardly from the support member toward the wall of the first rotary member to better shear with the front edge of the shear member as it passes.
  • each of the bars has an endmost edge spaced from the support member so as to lie immediately adjacent the wall of the rotary member.
  • the bars are located at a height which is substantially aligned with a tangent across the top of the walls of the rotary members.
  • the support member comprises a longitudinal support beam positioned in the throat parallel to the axes at a height such that the radially outermost edges of the shear members pass the beam and so that a bottom edge of the bars is at a height above the plane of closest approach so as to leave a space underneath the bars in the throat before the plane.
  • each shear member on each of the rotary members is spaced longitudinally to leave a space between each shear member and the next on the rotary member at least equal to the thickness of one of the bars.
  • a bottom grate member underneath the plane of closest approach including a support member extending parallel to the axes between the first and second rotary members, a plurality of bars extending at right angles to the support member at spaced positions along the first support member for cooperation in a shearing action with a plurality of the shear members of the first rotary member and a plurality of second bars extending at right angles to the support member at spaced positions along the support member for cooperation in a shearing action with a plurality of the shear members of the second rotary member.
  • first and second bars of the bottom grate member are spaced by a distance substantially equal to a width of the shear members so that each shear member cooperates with two of the bars which are immediately on opposite sides of the shear member.
  • first and second bars of the bottom grate member have a thickness substantially equal to a thickness of the shear members so that the first and second bars lie side by side with side surfaces in contact.
  • first and second bars of the bottom grate member have an upper edge extending upwardly and outwardly from the support member toward the respective rotary member.
  • the upper edges of the first and second bars of the bottom grate member are arranged in side elevation to extend downwardly and inwardly in a V-shape to intersect at a central apex.
  • the upper edges of the first and second bars of the bottom grate member are arranged to lie approximately in a radial plane of the axis of the respective rotary member so as to generate a shearing action with the shear members of the respective rotary member as they pass the upper edges.
  • the housing locates a plurality of apertures below the rotary members and outwardly of the support member of the bottom grate that are sized in a manner so as to selectively allow passage of the biomass material to a discharge outlet of the shredder.
  • apertures are located at spaced positions along lengths of the respective rotary member for cooperation with a plurality of the shear members of the respective rotary member in a shearing action as the shear members pass over the apertures.
  • protrusions along an inner surface of the housing that respectively project towards one of the rotary members.
  • protrusions are oriented parallel to the axes of the rotary members and disposed at spaced positions intermediate groupings of the apertures.
  • rotary members rotate at less than 10 rpm.
  • rotary members rotate at rate so as to require less than 10 HP to drive rotation.
  • a shredder for biomass material comprising:
  • a shredder for biomass material comprising:
  • first bars are longitudinally offset from the second bars.
  • first and second bars are spaced each from the next by a distance greater than a thickness of the shear members.
  • the bars of the first plurality include a front edge facing the leading edges of the shear members which is inclined downwardly and outwardly from the support member toward the wall of the first rotary member and the bars of the second plurality include a front edge facing the leading edges of the shear members which is inclined downwardly and outwardly from the support member toward the wall of the second rotary member.
  • each of the bars has an endmost edge spaced from the support member so as to lie immediately adjacent the wall of the rotary member.
  • the bars are located at a height which is substantially aligned with a tangent across the top of the walls of the rotary members.
  • the support member comprises a longitudinal support beam positioned in the throat parallel to the axes at a height such that the radially outermost edges of the shear members pass the beam.
  • a bottom edge of the bars is at a height above the plane of closest approach so as to leave a space underneath the bars in the throat before the plane.
  • each shear member on each of the rotary members is spaced longitudinally to leave a space between each shear member and the next on the rotary member at least equal to the thickness of one of the bars.
  • a shredder for biomass material comprising:
  • first and second bars of the bottom grate member are spaced by a distance substantially equal to a width of the shear members so that each shear member cooperates with two of the bars which are immediately on opposite sides of the shear member.
  • first and second bars of the bottom grate member have a thickness substantially equal to a thickness of the shear members so that the first and second bars lie side by side with side surfaces in contact.
  • first and second bars of the bottom grate member have an upper edge extending upwardly and outwardly from the support member toward the respective rotary member.
  • the upper edges of the first and second bars of the bottom grate member are arranged in side elevation to extend downwardly and inwardly in a V-shape to intersect at a central apex.
  • the upper edges of the first and second bars of the bottom grate member are arranged to lie approximately in a radial plane of the axis of the respective rotary member so as to generate a shearing action with the shear members of the respective rotary member as they pass the upper edges.
  • the housing locates a plurality of apertures below the rotary members and outwardly of the support member of the bottom grate that are sized in a manner so as to selectively allow passage of the biomass material to a discharge outlet of the shredder.
  • apertures are located at spaced positions along lengths of the drums for cooperation with a plurality of the shear members of the respective rotary member in a shearing action as the shear members pass over the apertures.
  • Another important independent optional feature is that there is provided a plurality of elongate protrusions along an inner surface of the housing that respectively project towards one of the rotary members.
  • the protrusions are oriented parallel to the axes of the rotary members and disposed at spaced positions intermediate groupings of the apertures.
  • a shredder for biomass material comprising:
  • One important independent optional feature is that there is a single rotary member in the housing and the bars are arranged on the housing at one side of the rotary member such that rotation of the rotary member acts to carry the biomass material against the bars in the shearing action.
  • each of the shear members has a leading surface which is concave in a direction longitudinally of the leading surface so as to tend to grasp and pull the biomass material.
  • shredder comprising the at least one rotary member, such as that having the single rotary member or the first and second rotary members may be used in combination with a composting machine, which is directly fed by the shredder, for composting the biomass material.
  • a composting system for biomass material comprising:
  • the injector assembly allows biomass material to be introduced into the rotary vessel of the composting machine as the rotary vessel is rotated about its horizontal longitudinal axis, thereby providing an automated composting system which can be continuously fed with source material such as biomass material without interrupting rotation of the rotary composting vessel.
  • tubular support member extends inwardly from the first end wall in a direction towards the second end wall and there is provided one or more bracing members spanning between the tubular support member and the rotary vessel for rigidifying connection therebetween.
  • the one or more bracing members comprises a plurality of gusset plates each of which has a first edge connected at an outer face of the tubular support member and a second edge connected at the first end wall.
  • the driving arrangement includes a drive sprocket having a central opening so as to be received over the tubular support member at a location thereon externally of the rotary vessel such that the injector conveyor passes through the central opening of the drive sprocket.
  • At least one of the distance conveyor and the injector conveyor may further comprise a plurality of elongate cutter bars extending along a length of the housing of the respective one of the tubular housings at circumferentially spaced positions about an inner face thereof for further reducing size of the biomass material as it passes through the respective one of the conveyors.
  • the shredder 1 of Figures 1 to 6 comprises first and second generally cylindrical rotary members or drums 10 and 11 mounted for rotation in a housing 12 where the drums are mounted on center drive shafts 13 and 14 driven for rotation by a conventional drive system 15 about parallel axes in opposed directions.
  • the drums are supported by the shafts on bearing 16 on the housing so as to define at a plane P of closest approach containing the axes of the rotary members a space S therebetween and forming a throat on a feed side of the plane P.
  • the housing 12 within which the rotary members are mounted has an open top 18 defining a feed opening 19 for receiving the biomass material where the biomass material is fed either manually or by a suitable conveyor into the feed opening and enters the throat 17 to pass through the space S.
  • Suitable covers and guards may be provided at the open top to prevent a fall into the feed throat causing personal danger.
  • Each of the rotary members 10, 11 has an imperforate cylindrical wall 20 defining a hollow interior with a plurality of shear members 21, 22 projecting generally radially outwardly of the cylindrical wall.
  • the wall thus forms a simple drum of steel with open ends at the housing.
  • the shear members 21, 22 are arranged in a pair including an elongate structural interconnecting member 23 extending diametrically through the hollow interior of the drum. Where the drum is driven by a drive shaft, the members 23 may be connected to the drive shaft 13 to communicate drive force. However other drive arrangements may be provided.
  • each rotary member 21 and 22 and the interconnecting member are formed from a plate on each end of which a respective one of the pair is formed.
  • the plate has a constant thickness through the drum.
  • the plate has a width W which is also constant along its length up to the wall 20 which it meets at diametrically opposed positions where the wall is welded to the sides of the plate at the point of emergence though the wall. That portion of the plate which is exposed outside the drum forms the shear members 21 and 22 with a leading edge of the plate arranged to form the leading edge of the shear member.
  • each rotary member includes its own drive shaft through which rotational forces on the rotary member are applied and the elongate structural members 23 are connected to the drive shaft to receive rotational forces therefrom.
  • each shear member has a leading surface 24A, a trailing surface 24B and first and second side surfaces 24C.
  • the pairs formed by the plates are arranged so that the shear members are arranged in an array where the shear members of the array are spaced longitudinally and radially of the cylindrical wall.
  • the drums are arranged so that, in the plane P, the shear members of one drum are angularly offset from the shear members of the other drum so that they are angularly spaced and out of phase as they pass..
  • Each of the shear members 20, 21 has its leading surface 24A which is concave in a direction longitudinally of the leading surface so as to form a hook with an outermost point 24D tending to grasp and pull the biomass material though the throat 17 and the plane P.
  • the top grate member 25 in the throat 17.
  • the top grate member includes a support beam 26 extending along the throat generally parallel to the axes of the two drums 11 and 12.
  • the beam 26 is carried on the end walls 12A of the housing 12 so as to span along the length of the drums within the throat 17.
  • the beam 26 has a top surface 31 facing the material as it is fed into the throat so as to provide a surface on which the material can sit.
  • the beam has two side surfaces 29 and 30 which converge inwardly and downwardly to a center apex along the bottom of the beam. In this way the beam is generally triangular in cross-section with the two side walls approaching as close as possible to the outer edges of the shear members as they pass the beam.
  • the side walls lie generally in a plane peripheral to the axis of the adjacent drum.
  • the beam carries on one face 29 a plurality of first bars 27 extending at right angles to the beam at spaced positions along the beam 26 for cooperation in a shearing action with a plurality of the shear members 221 of the first rotary drum 10.
  • the beam 26 also carries a plurality of second bars 28 extending at right angles to the beam 26 at spaced positions along the beam for cooperation in a shearing action with a plurality of the shear members 222 of the second rotary member 11.
  • the first bars 27 are longitudinally offset from the second bars 28. In this way the bar 27 cooperates with one side face of the shear member 221 and the bar 28 cooperates with the other face of the shear member 222.
  • the first bars 27 are spaced each from the next by a distance greater than a thickness of the shear members 221. In this way there are spaces between the bars 27 at which no shear member is located allowing enough space for the material to be fed past the top grate into the throat. That is it is not intended that the maximum shearing action occur in the area of the top grate but instead the grate acts to hold up the material to be fed until it can be grasped by the hooked front surface of the shear members to be pulled into the throat. This improves the feeding action, acts as a pre-shredder for size reduction, and prevents the material from merely dancing over the shear members in the throat without a positive feeding action.
  • the bars 28 are also symmetrically spaced relative to the bars 27.
  • the bars 27 and 28 each have a leading edge 32, 33 facing the leading edges 24A of the shear members 221, 222 where the edges 32 and 33 are inclined downwardly and outwardly from the beam 26 toward the wall of the adjacent rotary member 10 or 11.
  • edge 32 is not visible in Figure 1A but shown on Figure 1B .
  • each of the bars 27, 28 has an endmost edge or tip 34A spaced from the beam 26 so as to lie immediately adjacent or as close as possible to the wall 20 of the rotary member 10 or 11. That is the leading edge has a length approximately matching that of the shear member of the other drum. Also the angle of the leading edge is approximately on a radius of the associated drum.
  • the bars 27 and 28 have a top edge across the top of the beam 26 so that they form a common top surface of the grate.
  • the top surface of the grate 25 is located at a height above a tangent T across the top of the walls 20 of the rotary members 10 and 11 but below the open top 18 such that the biomass material fed into the open top may pass over and across the top grate until the material is grasped by the shear members of one drum or the other.
  • the bars are located at a height which is aligned with the tangent T and the grate sits sufficiently deep within the feed opening at a location in the throat to support the biomass material generally above the throat and resist jamming of the shear members in the space S between the drums that may be caused by, for example, passing an excessive amount of overly large pieces of the biomass material through the space S at one time.
  • the top surface of the grate 25 may be located at a height below the tangent T so that the top grate sits entirely in the throat.
  • the bars 27 and 28 also have a bottom edge 34B of the bars which is at a common height with the bottom apex of the beam 26 and is at a height above the plane P of closest approach so as to leave a space underneath the bars in the throat 17 before the plane P.
  • a bottom grate 35 underneath the plane P of closest approach including a square support beam 36 extending parallel to the axes between the first and second rotary members 10, 11.
  • the beam 36 has a top wall 37, a bottom wall 40 and two side walls 38, 39 so as to be symmetrically located underneath the plane P.
  • the beam is again located so that an outermost point of the shear members 22 can pass by the beam close to the beam.
  • the beam carries a series of bars 41 cooperating with the drum 10 and a series of bars 42 cooperating with the drum 11.
  • the bars are formed of the same plate material as the shear members so that the bars 41 are arranged in a row along the beam and interleave with the bars 42 of the drum 11 leaving a space between each bar 41 and the next substantially equal to the width of the shear members of the drum 10.
  • Symmetrically the bars 42 are spaced by the bars 41 so as to define spaces therebetween to receive the shear members of the drum 11.
  • the bars thus define a plurality of bars 41 extending at right angles to the support beam at spaced positions along the first support beam 36 for cooperation in a shearing action with a plurality of the shear members of the first rotary member 10 and a plurality of second bars 42 extending at right angles to the support beam at spaced positions along the support beam for cooperation in a shearing action with a plurality of the shear members of the second rotary member 11.
  • first and second bars 41, 42 have a thickness substantially equal to a thickness of the shear members 22 so that the first and second bars 41, 42 lie side by side with side surfaces in contact.
  • a suitable small clearance is provided to allow the shear members to pass though without binding or interference.
  • the bars 41 and 42 have an outer edge 48 which is flush with the side walls 38, 39 of the beam 36.
  • the bars 41 and 42 may have an arcuate outer edge 48 immediately following the wall 20 of the respective drum.
  • the bars have an upper edge 49 extending upwardly and outwardly from the support beam 36 toward the respective rotary member 10, 11 and joining the outer edge 48 to form a flat top tip 50.
  • first and second bars 41, 42 are arranged in side elevation to extend downwardly and inwardly in a converging V-shape to intersect at a central apex 51. Also the upper edges of the first and second bars 41, 42 are arranged to lie approximately in a radial plane of the axis of the respective rotary member so as to generate a shearing action with the shear members 22 of the respective rotary member 10, 11 as they pass the upper edges.
  • the housing 12 includes upper walls 51 each which start at the open top 18 and taper inwardly towards one another and a lower wall 52 which spans between the upper walls and circumferentially about both drums so as to provide a closed bottom 54 below the open top.
  • the lower wall 52 is spaced radially of the walls 20 of the drums 10, 11 to permit passage of the shear members therebetween.
  • the lower wall 52 is contiguous with the top wall 37 of the bottom grate's beam 36 and is raised at a location beneath the throat 17 and space S between the drums 10 and 11 relative to the portions of the lower wall beneath the drums so that the material that is pulled through the bottom grate 35 and which cannot be grasped by the leading edge of the respective shear member tends to migrate towards lowest points along the lower wall.
  • the lower wall 52 locates a plurality of grating apertures 56 along the portions of the lower wall beneath each drum 10, 11 and outwardly of the beam 36 of the bottom grate.
  • the grating apertures are located at spaced positions along the lengths of the drums.
  • the grating apertures are sized in a manner so as to selectively permit passage to a discharge outlet of the shredder which is beneath the apertures those pieces of biomass material which are appropriately sized for the end product of the shredder.
  • the grating apertures may be sized equal to or smaller than the distance between an adjacent pair of the first or second bars of the bottom grate.
  • the biomass material passing over the grating apertures that is sized too large to pass therethrough may be circulated about the respective drum so as to pass through the top and bottom grates another time for further size reduction.
  • the grating apertures 56 which are rhombus-shaped as better shown in Figures 5 and 6 , may provide further size reduction in addition to the grates by generating a shearing action with a plurality of the shear members of the respective drum as they pass over the apertures.
  • Elongate protrusions 58 are disposed along an inner surface of the lower wall 52 of the housing at positions spaced angularly of one another. Each protrusion projects inwardly toward one of the drums 10, 11.
  • the protrusions are oriented parallel to the axes of the drums 10, 11 and separate groupings of the grating apertures 56 which are arranged in rows parallel to the axes of the rotary members so as to be at spaced positions intermediate such groupings of the grating apertures.
  • the protrusions provide obstructions against the biomass material to resist same from circling back to the feed openings if the material is sufficiently sized to pass through the apertures; however, the protrusions do not impede the passage of the shear members.
  • the protrusions may be rectangular, for example square, in cross-section.
  • the protrusions comprise elongate rails which are secured at the inner surface of the lower wall 52.
  • the protrusions may be formed in the lower wall 52.
  • the arrangement provided herein provides a very effective shearing action on biomass material so that the rotary members can rotate at less than 10 rpm while pulling the material into the throat, through the plane P and through the bottom grate 36.
  • This provides separate shearing actions which act to break up the material effectively to form a suitable fuel material or for composting.
  • the use of this slow rate of rotation combined with the separate shearing actions allows the drive system to have a power requirement of less than 10 HP to drive rotation. Also the slow rate of rotation improves safety as it is less likely to cause sparks from vigorous impact with nails, rocks or the like.
  • the arrangement also provides a three stage shredding machine for reducing the biomass material in size from a whole state to a shredded or fragmented state.
  • a shredder 1' for biomass material which comprises a housing 18A and a single one of the drums or rotary members previously described indicated at 10A.
  • the drum 10A includes the shear members 22 carried on the interconnecting members 23 and extending through the wall 20 of the drum.
  • a housing 18A with a front vertical wall 181 parallel to a rear wall 182.
  • a feed chute 183 extending upwardly and rearwardly from the rear wall 182 for loading biomass material.
  • the feed chute includes a hinged panel 184 at a top of the chute allowing the user to lift the panel and insert materials to be shredded.
  • the housing has a length matching that of the drum and a width arranged to receive only a single drum within which the single drum is mounted underneath the feed opening defined by the feed chute 183 for receiving the biomass material.
  • the front wall 181 carries at a height approximately at the axis of the drum a plurality of parallel bars 185 carried on a structural member 186 of the wall 181 of the housing at longitudinally spaced positions along the axis of the drum.
  • the bars are spaced by the width of the shear members 21, 22 to allow them to pass between respective bars in a shearing action.
  • the shear members are arranged in an array where the shear members 21, 22 of the array are spaced longitudinally and radially of the cylindrical wall 20.
  • the shear members are arranged such that at least some of the shear members of the rotary member pass respective ones of the bars 185 in a shearing action between one of the side surfaces of the shear members and a surface of the respective bar.
  • the bars 185 are supported on the wall 181 so as to provide sufficient strength to accept the shearing action.
  • the single drum 10A carries a pair of divider disks 188, 189 which separate a center shearing section of the drum from end bearing sections 190, 191 where the drum is supported on rollers 192 and is driven by a gear wheel 193 at one end of the drum receiving drive from a sprocket of a drive motor 194.
  • the rollers 192 may be substituted for bearings in other embodiments.
  • the leading surface 24A of the shearing member has a leading surface which is concave in a direction longitudinally of the leading surface so as to tend to grasp and pull the biomass material and acts as a hook to carry the material downwardly against the bars 185.
  • a second set of bars 196 in a similar arrangement to the first set of bars 185, is mounted on the rear wall 182 to prevent material from falling behind the rear of the drum.
  • the drive arrangement used for the single drum where a gear wheel 193 is provided on the drum wall beyond one end of the shearing action can also be used in the double drum arrangement shown above.
  • the shredder of either one of the illustrated embodiments is suited for use in conjunction with a composting system which includes a composting machine or composter 102 directly fed by the shredder for processing biomass material.
  • the shredder breaks up the biomass material before that material is passed through the composter.
  • Figure 9 shows the single drum shredder 1' of the second embodiment.
  • the composter 100 comprises a rotary vessel 102 which is arranged for rotation about a horizontal longitudinal axis R. There is also provided a rotary support arrangement 104 for supporting the rotary vessel in its rotation, and a drive assembly 106 arranged for turning the rotary vessel about its horizontal longitudinal axis.
  • the rotary vessel 102 has a cylindrical vessel wall 102A, and first and second end walls 102B and 102C. Each one of the end walls 102B, 102C carries an opening 109 and 110 therein.
  • the first opening 109 located in the first end wall 102B at a front of the composter defines an inlet for receiving the biomass material.
  • the second opening 110 located in the second end wall 102C defines an outlet for discharging the biomass material from the rotary vessel.
  • a plurality of agitating members 112 are provided at spaced positions on an inner face of the vessel wall 102A so as to extend inwardly therefrom normal to a surface of the inner face.
  • the agitating members 112 are spaced in a staggered manner both circumferentially about the vessel wall and longitudinally along this wall so as to be spaced angularly and axially of one another.
  • the agitating members form a plurality of vanes 112, which are obliquely oriented such that the vanes encourage movement of the biomass material which is received in the rotary vessel towards the outlet 110 of the vessel.
  • the composter includes an access opening 114 in the vessel wall 102A that is covered by an openable door 115 which closes the access opening during rotary operation of the composter.
  • the rotary support arrangement 104 of the composter includes a tubular support member 116 at one end of the vessel and a second support member 118 closer to an opposing end of the vessel than the end locating the tubular support member.
  • the tubular support member 116 is located at the front of the rotary vessel.
  • the tubular support member forms a tube which is smaller in diameter than the rotary vessel 102 and which is coaxially positioned with respect to the rotary vessel so as to lie along its horizontal longitudinal axis R.
  • a front portion 116A of the tubular support members extends forwardly and outwardly from the first end wall 102B so as to reside outside of the rotary vessel 102, and a rear portion 116B extends rearward and inwardly from the first end wall 102B so as to reside inside of the rotary vessel.
  • the outside front portion 116A of the tubular support member is rotatably carried on a segmented oak bearing 120, which is held just below the tubular support member in engagement therewith by a raised frame member 122.
  • the raised frame member is part of a larger, overall frame 124 over which most (if not all) of the components of the composter 100 are supported.
  • the segmented oak bearing 120 comprises a plurality of stacked oak blocks 126 received in a generally U-shaped receptacle 128 attached to the raised frame member 122.
  • the oak blocks when stacked in a working configuration form an arc shaped groove 130 which cups the tubular support member 116 so that the rotary vessel is supported in its rotation about the horizontal longitudinal axis R by the tubular support member, which is disposed at a first location which is closer to the first end wall 102B than to the second end wall 102C.
  • the tubular support member includes a pair of flanges 129 extending circumferentially about the outer face of the outside front portion 116A of the tubular support member. This pair of flanges 129 has a longitudinal spacing therebetween which locates the segmented oak bearing 120 and maintains alignment therewith so that the composter is resisted from longitudinal shifting during rotation.
  • the second support member 118 comprises a pair of rollers 130 which rollably engage an outer face of the vessel wall 102A as the rotary vessel rotates about its horizontal longitudinal axis R.
  • the rollers 130 are spaced longitudinally of the tubular support member 116 along the horizontal longitudinal axis R in a rearward direction from the first end wall 102B to the second end wall 102C as better shown in Figure 9 .
  • the second support member thus defines a second location which is closer to the second end wall 102C than to the first end wall at which the rotary vessel is supported in its rotation about its horizontal longitudinal axis.
  • Housing the rollers is a generally U-shaped frame member (not shown) that is supported on the overall frame 124 and which extends about the vessel wall 102A.
  • the drive assembly 106 comprises drive motors 131 operatively coupled to a driving arrangement which transfers motion of the motors into rotational motion which effects turning of the rotary vessel 102.
  • the driving arrangement includes a drive sprocket 132 located at or adjacent the front end of the rotary vessel.
  • the drive sprocket has a central opening 134 and is thus received over the front portion 116A of the tubular support member.
  • the drive sprocket 132, the tubular support member 116, and the rotary vessel 102 are all coaxial with respect to the horizontal longitudinal axis R so as to share a common axis of rotation.
  • the drive sprocket 132 is attached to the tubular support member 116, which is in turn affixed to the rotary vessel, so that the drive motors drivably engaging a belt or chain that in turn engages teeth of the drive sprocket 132 are able to effect the rotation of the rotary vessel.
  • bracing members 136 are provided at the inside of the rotary vessel so as to rigidly connect the tubular support member 116 and the rotary vessel 102. Each bracing member 136 spans between the inside portion 116B of the tubular support member and the rotary vessel.
  • the one or more bracing members comprises a plurality of gusset plates 136, each of which has a first edge 136A connected at an outer face of the tubular support member 116, a second edge 136B connected at the first end wall 102B, and a third edge 136C spanning generally between the outer face of the tubular support member and the first end wall. Additionally, the bracing members are spaced angularly of one another in a uniform fashion so as to support the connection between the tubular support member and the rotary vessel at spaced positions along the circumference of the tubular support member.
  • the composter includes an injector assembly 138 that is arranged for inputting biomass material into the rotary vessel through its inlet 109.
  • the injector assembly is stationary such that it does not rotate, and therefore a conveyor 140 of the injector assembly is arranged so as to be held by upstanding frame members of the overall frame 124 at a suspended position within the tubular support member 116, free of engagement with the rotatable tubular support member through which the injector assembly passes.
  • the injector assembly 138 comprises the injector conveyor 140, which includes a tubular housing 142 and a conveying member 144 received therein.
  • the conveying member 144 is of a suitable form such as a screw conveyor, delivering the biomass material along the horizontal longitudinal axis R of the rotary vessel.
  • the tubular housing 142 is typically fully enclosed around its circumference.
  • the tubular housing may have one or more openings, as in the illustrated arrangement where the tubular housing has a top opening 146 for receiving biomass material dropped into the injector assembly for subsequent transfer into the rotary vessel 102.
  • the injector conveying member 144 and injector tubular housing 142 enclosing same are disposed along the horizontal longitudinal axis R with inner ends located at or adjacent the first end wall 102B. More particularly, the inner ends are located inwardly of an inner end of the tubular support member 116 so as to extend inwardly beyond the tubular support member in the illustrated arrangement.
  • a rotational clearance gap CG is formed circumferentially around an outside of the tubular housing 142 where the tubular housing lies in the tubular support member. That is, an outer face of an intermediate portion 146 of the injector housing 142 is spaced radially of the tubular support member received over same so as to circumferentially surround the housing, and this gap CG exists radially between the intermediate portion 146 of the injector housing and the tubular support member around a full circumference of the housing's intermediate portion.
  • the sealing membrane 148 is made of a flexible and stretchable material like rubber. The sealing membrane provides a tight seal across the clearance gap CG by stretching the membrane over the full circumference of the injector housing 142 and clamping this membrane to the tubular support member 116. Thus, the sealing membrane rotates together with the rotary vessel while in engagement with the outer face of the tubular injector housing.
  • the injector's conveying member 144 is arranged, for example by being sized and positioned in an appropriate manner, such that a gap is formed circumferentially around the screw conveyor between same and the tubular housing 142 of the injector assembly.
  • this gap there is provided a plurality of elongate cutter bars 150 lying parallel to the horizontal longitudinal axis R.
  • the cutter bars extend along a length of the injector housing 142 at circumferentially spaced positions about an inner face thereof, so as to be spaced angularly of one another.
  • These cutter bars 150 provide a shearing action along the length of the housing 142 to reduce size of the biomass material as the material passes through the injector conveyor, being advanced by the injector conveying member 144.
  • a drive assembly 152 is provided with the injector assembly for driving the injector assembly's conveying member 144.
  • the drive assembly 152 comprises a drive motor 152A which is operatively coupled to the screw conveyor 144 by a drive belt in order to drive axial rotation of the injector assembly's screw conveyor.
  • the drive assembly of the injector assembly is separate from the drive assembly for the rotary vessel 102.
  • a common drive assembly may power both the rotation of the rotary vessel and the injector assembly's conveying member.
  • an extension tube 154 is affixed to the second end wall 102C of the rotary vessel so as to extend rearward and outwardly from the outlet 110 of the rotary vessel to a holding tank 156 for storing the biomass material.
  • the extension tube carries agitating members 112 on its inner face, in a similar fashion to those within the rotary vessel, so as to encourage movement of the biomass material toward the holding tank.
  • a shredder such as that indicated at 1' is arranged to directly feed the composter 100, which then passes the biomass material into the holding tank 156.
  • the shredder and composter are operatively coupled by a distance conveyor 158 that is arranged to transfer the biomass material from the outlet of the shredder to the composting machine across the distance therebetween.
  • the distance conveyor 158 comprises its own tubular conveyor housing 160 and a suitable conveying member 162, such as a screw conveyor, which is received in the tubular conveyor housing 160 for advancing the material within the conveyor housing 160.
  • a drive assembly 164 is also provided with the distance conveyor in order to drive the conveying member 162, such as in rotation about its axis in the illustrated arrangement of the screw conveyor.
  • the distance conveyor has its own drive assembly as the distance conveyor is standalone of the shredder and the composting machine, through operation as part of the composting system, the distance conveyor cooperates with both the shredder and composter.
  • a rate at which the distance conveyor transfers the biomass material is typically proportional to (i) a rate at which biomass material is shredded in the shredder and (ii) a rate at which the injector conveyor 138 advances the biomass material into the rotary vessel 102.
  • the distance conveyor 158 is supported at each end thereof in an inclined orientation with a lower end 158A beneath the outlet of the shredder 1' and an upper end 158B over an inlet of the injector conveyor that is defined by the top opening 146 in the injector tubular housing.
  • the distance conveyor is oriented at an incline because the shredder 1' and composting machine 100 are carried at different elevations with the shredder being a stationary unit and the composting machine being a mobile unit carried in a portable trailer.
  • the distance conveyor 158 includes an inlet chute 166 extending upwardly from the tubular housing 160 at its lower end so as to guide biomass material from the outlet of the shredder into the conveyor housing.
  • the tubular housing is circumferentially enclosed along its full axial length so as to contain the biomass material within the distance conveyor as it is transferred therealong, except where the inlet chute 166 is located at the lower end of the distance conveyor and an inlet chute 168 of the injector conveyor meets the tubular housing 160 of the distance conveyor to guide the biomass material thereto.
  • the distance conveyor includes a deflector 170 within the tubular housing 162 at its outlet.
  • the deflector forms a plate 170 which is obliquely oriented relative to the axis of the conveying member 162 so as to guide the biomass material downwardly into the injector assembly's inlet chute 168, over which the deflector is disposed.
  • a plurality of elongate cutter bars 172 provided inside the tubular housing 162 of the distance conveyor provide shearing surfaces against which the conveyed biomass material may be further reduced in size after having passed through the shredder.
  • These cutter bars 172 of the distance conveyor are arranged in a similar manner as those 150 of the injector assembly, being disposed parallel to the axis of rotation of the distance conveyor's conveying member 162 and being spaced circumferentially about an inside face of the circumferentially enclosed tubular housing of the distance conveyor.
  • the inlet chute 168 of the injector assembly which extends upwardly from the tubular housing 142 thereof guides the biomass material into the injector conveyor.
  • the injector conveyor's conveying member 144 advances this material axially along and the enclosing tubular housing, and into the rotary vessel 102 of the composting machine.
  • the agitating members 112 of the rotary vessel and the extension tube encourage the movement of the biomass material through these elements and into the holding tank 156 as the rotary vessel and extension tube rotate about the horizontal longitudinal axis R.
  • a scoop 174 disposed in the rotary vessel and affixed to the second end wall 102C at the outlet 110 of the rotary vessel helps the biomass material transition from the rotary vessel into the diametrically smaller sized extension tube 154.
  • the holding tank 156 includes an opening 176 in a side wall 177 through which the extension tube 154 passes such that a length portion of the extension tube is locatable in the holding tank.
  • a sealing gasket 178 (schematically illustrated) is provided at the opening 176 in the side wall so as to circumferentially seal the opening around the extension tube.
  • an exhaust fan 180 (schematically illustrated) provided in the holding tank 156 induces airflow through the rotary vessel 102 and extension tube 154 as part of the composting process.
  • the holding tank 156 is arranged so as to be detachable from the extension tube. As such, the holding tank is removable from the composting system such as for transferring the composted biomass material to another container or location.
  • the shredder is suited for accepting the biomass material in a whole state in which the material includes leaves, stems or stalks, and other parts of the plant.
  • the shredder shreds or fragments the biomass material so as to reduce it in size from the whole state to a fragmented state in which the biomass material is in a particulate form relative to the whole state. That is, the fragmented state of the biomass material comprises pieces which are smaller in size than the biomass material in the whole state.
  • a suitable conveyor 158 termed 'distance conveyor' transfers the biomass material in the fragmented state to the composter 100 for composting.
  • composters require the biomass material to be sized less than a maximum allowable size in order to fit into the machine, and the shredder of either one of the illustrated embodiments is suited for breaking up biomass material to fit such size constraints of the composter.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
EP16197480.3A 2015-11-06 2016-11-07 Zerkleinerer für biomassematerial Withdrawn EP3165285A1 (de)

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CA2911800A CA2911800A1 (en) 2015-11-06 2015-11-06 Low power biomass shredder and composting system enabled for continuous feed of material for composting

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CN107790245A (zh) * 2017-10-23 2018-03-13 周梅阳 饲料用谷物粉碎处理装置
CN107930764A (zh) * 2017-12-14 2018-04-20 阜阳市颍东区兴牧禽业专业合作社 一种园林落叶与雨水的再回收装置
CN110681459A (zh) * 2019-09-30 2020-01-14 河南恒天久大实业有限公司 一种织物垃圾自动分拣破碎装置
CN111974502A (zh) * 2020-07-01 2020-11-24 彭秀真 一种船用废物处理装置
CN113058687A (zh) * 2021-04-28 2021-07-02 江苏鹏飞集团股份有限公司 辊面再利用的辊压装置
CN113087138A (zh) * 2021-03-24 2021-07-09 海南欧瑞康健康管理有限公司 一种动态旋转膜厌氧生物反应器
CN114272991A (zh) * 2021-12-11 2022-04-05 浙江辰泰机械制造有限公司 拨动消卡料的对辊制砂机

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CN108654736A (zh) * 2018-03-22 2018-10-16 杭州知加网络科技有限公司 一种医药包装盒切碎装置
CN110756259A (zh) * 2019-11-13 2020-02-07 裘林芳 一种水泥粉碎装置
CN110801894A (zh) * 2019-11-22 2020-02-18 湖南金凯循环科技有限公司 一种可收集碎渣的锂电池回收用破碎装置
CN112058446A (zh) * 2020-07-06 2020-12-11 大同新成新材料股份有限公司 用于半导体石墨加工制作的制备装置及其加工方法

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107790245A (zh) * 2017-10-23 2018-03-13 周梅阳 饲料用谷物粉碎处理装置
CN107930764A (zh) * 2017-12-14 2018-04-20 阜阳市颍东区兴牧禽业专业合作社 一种园林落叶与雨水的再回收装置
CN110681459A (zh) * 2019-09-30 2020-01-14 河南恒天久大实业有限公司 一种织物垃圾自动分拣破碎装置
CN111974502A (zh) * 2020-07-01 2020-11-24 彭秀真 一种船用废物处理装置
CN113087138A (zh) * 2021-03-24 2021-07-09 海南欧瑞康健康管理有限公司 一种动态旋转膜厌氧生物反应器
CN113058687A (zh) * 2021-04-28 2021-07-02 江苏鹏飞集团股份有限公司 辊面再利用的辊压装置
CN114272991A (zh) * 2021-12-11 2022-04-05 浙江辰泰机械制造有限公司 拨动消卡料的对辊制砂机

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Effective date: 20171111