CN211636762U - Separator of grinding machine and grinding machine - Google Patents

Abstract

The application discloses a separating device of a grinding machine and the grinding machine, which comprise a first pressure plate, a second pressure plate, a plurality of ring screen pieces, a plurality of spacing pieces and a plurality of connecting pieces, wherein two ends of each connecting piece are detachably connected with the first pressure plate and the second pressure plate respectively; when the locking connection piece is connected with the first pressure plate and the second pressure plate, the gaps between the ring sieve sheets form a sieving area. The application provides a separator and grinding machine of grinding machine can conveniently clear up the grinding medium that the jamming is on separator.

Description

Separator of grinding machine and grinding machine

Technical Field

The application relates to a material grinding device, in particular to a separating device of a grinding machine and the grinding machine.

Background

In the preparation of natural asphalt, the mainstream production process is to fill grinding media in a grinding cylinder, and filter the ground materials through a separation device after the materials and the slurry formed by the grinding media are continuously stirred and ground. As shown in fig. 1 and 2, the current screen structure is that a plurality of connecting columns 5 ' are arranged between a left platen 1 ' and a right platen 2 ', the connecting columns 5 ' surround a plurality of circumferential annular screen bars 3 ', and a circumferentially distributed screening area 6 ' is formed by gaps between adjacent annular screen bars 3 '.

In actual production, the axial direction of the main shaft is along the direction that the left pressure plate 1 'points to the right pressure plate 2', slurry is driven by the main shaft to rotate in the grinding cylinder along the circumferential direction and enters the separation device from the outside of the separation device along the radial direction through the screening area 6 ', grinding media formed by small steel balls or ceramic rods and the like are very easily clamped on the screening area 6' to form a 'bead string' phenomenon, so that the separation device is blocked, the material cannot effectively and quickly pass through the separation device, and the production efficiency is influenced. The method for solving the problem is to pry the grinding medium out of the screening area 6 ' by manually holding a prying piece, so that the workload is high, the annular screen bars 3 ' are easy to damage, the pore space between the annular screen bars 3 ' is enlarged and does not accord with the set size, and the service life is shortened.

Disclosure of Invention

In view of the above, it is desirable to provide a separating device of a grinder and a grinder, so as to solve the problem that it is inconvenient to clean the grinding media stuck on the separating device.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

a separating device of a grinding machine comprises a first pressure plate, a second pressure plate, a plurality of ring screen pieces, a plurality of spacing pieces and a plurality of connecting pieces, wherein two ends of each connecting piece are detachably connected with the first pressure plate and the second pressure plate respectively; when the connecting piece is locked with the first pressure plate and the second pressure plate, a screening area is formed by gaps among the ring screen pieces.

Further, each ring screen piece comprises a plurality of first connecting parts matched with the connecting parts.

Further, the first connecting portion is a through hole, and a plurality of connecting members pass through the corresponding first connecting portion on each ring screen piece.

Furthermore, the connecting piece includes a third connecting portion movably matched with the first connecting portion, one of the first connecting portion and the third connecting portion is a clamping block, and the other is a clamping groove extending along the axial direction.

Further, the distance piece and the ring sieve piece are integrally connected, welded, clamped or bolted.

Further, the distance piece with the ring sieve piece adopts joint or bolted connection, just the ring sieve piece including with the constant head tank of distance piece looks adaptation.

Furthermore, the spacer comprises a second connecting part matched with the connecting piece, and the second connecting part is movably connected with the connecting piece.

Furthermore, the second connecting parts are through holes, and the connecting pieces penetrate through the corresponding second connecting parts.

Furthermore, the connecting piece includes a fourth connecting portion movably matched with the second connecting portion, one of the second connecting portion and the fourth connecting portion is a clamping block, and the other clamping groove extends along the axial direction.

Further, the cross section of each ring screen sheet is T-shaped or triangular, the second ends with larger width of the ring screen sheets are outward along the radial direction, and the screening area is formed by the gaps between the second ends of the adjacent ring screen sheets.

Further, the separating device comprises a first connecting ring, a first side of which is connected with the ring screen, and a second side of which, facing away from the ring screen, comprises a first projection projecting in the axial direction; first pressure disk towards including first groove on the first face of second pressure disk, first groove is followed the axial and is sunken to form spaced first fender face and second and only ends the fender face, the embedding of first convex part suitability first groove, wherein, first fender face with the laminating of first convex part along the first lateral surface of circumference, the second end the fender face with the laminating of first convex part along the first medial surface of circumference.

Further, the separating device comprises a second connecting ring, a first side of which is connected with the ring screen, and a second side of which, facing away from the ring screen, comprises a second projection projecting in the axial direction; the second pressure disk towards including the second groove on the first face of first pressure disk, the second groove is followed the axial and is sunken to form spaced third and end shelves face and fourth and end the shelves face, the embedding of second convex part suitability the second groove, wherein, the third end shelves face with the laminating of the second lateral surface along circumference of second convex part, fourth end shelves face with the laminating of the second medial surface along circumference of second convex part.

A grinding machine comprises a grinding cylinder and the separating device, wherein the separating device is arranged in the grinding cylinder.

The separating device and the grinding machine of the embodiment of the application are characterized in that the annular sieve sheets, the spacing pieces and the connecting pieces are arranged, two ends of the connecting pieces are respectively detachably connected with the first pressure plate and the second pressure plate, the annular sieve sheets are movably arranged on the connecting pieces along the axial direction, when the connecting pieces are locked with the first pressure plate and the second pressure plate, the first pressure plate and the second pressure plate move oppositely along the axial direction, and further the annular sieve sheets and the spacing pieces between the first pressure plate and the second pressure plate are compressed, therefore, a screening area is formed by gaps between the annular sieve sheets, when the grinding media are found to be clamped on the screening area to cause 'beads', the connection between the connecting pieces and the first pressure plate and the connection between the connecting pieces and the second pressure plate can be released, the first pressure plate and the second pressure plate lose external action and are released along the axial direction, the annular sieve sheets move along the axial direction, the, the grinding medium that can be convenient let block freely falls down, and the maintenance process of whole "pearl cluster" is convenient, has avoided carrying out operations such as sled to strike the ring sieve piece to prevent the unexpected wearing and tearing of ring sieve piece, final improve equipment life.

Drawings

FIG. 1 is a schematic diagram of a separation apparatus of the prior art;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a separation device according to an embodiment of the present application;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a schematic structural diagram of another separation device according to an embodiment of the present application;

FIG. 6 is a cross-sectional view C-C of FIG. 5;

FIG. 7 is a partial schematic view of the assembled relationship of the screening ring segments, spacers and connectors according to an embodiment of the present application;

FIG. 8 is a partial schematic view of another example of the assembled relationship of the screening sheets, spacers and connectors according to the present disclosure;

FIG. 9 is a schematic structural diagram of a first platen according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural view of a second platen according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of the connection relationship between the screening rings and the spacer according to the embodiment of the present application;

FIG. 12 is a schematic view of another attachment of the screening sheets to the spacer member according to an embodiment of the present application;

fig. 13 is a schematic view of the connection relationship between the ring screen pieces and the spacer according to the embodiment of the present application.

Detailed Description

It should be noted that, in the case of conflict, the technical features in the examples and examples of the present application may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the present application and should not be construed as an improper limitation of the present application.

In the description of the embodiments of the present application, the "up", "down", "left", "right", "front", "back" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 3, it is to be understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application.

In the description of the embodiments of the present application, "inner" refers to the centripetal side formed around the ring screen annulus, and "outer" refers to the centrifugal side formed around the ring screen annulus.

A general grinding mill comprises a grinding cylinder with an outlet, a stirring device and a separating device, wherein the separating device is arranged in the grinding cylinder and communicated with the outlet, the stirring device is used for stirring grinding media and materials in the grinding cylinder to grind the materials, and the separating device is used for separating the materials to be discharged from the outlet. The grinding media tends to get stuck on the separation device forming "beads". Because the distance between the annular sieve sheets of the existing separation device is not adjustable, tools such as a prying sheet and the like are needed to pry the grinding media out from the sieve exchange sheets manually, the cleaning efficiency is low, and the annular sieve sheets are easy to damage.

A separating apparatus according to an embodiment of the present application, as shown in fig. 3 to 13, includes a first platen 1, a second platen 2, a plurality of ring screen sheets 3, a plurality of spacer members 4, and a plurality of connecting members 5. The both ends of connecting piece 5 can be dismantled with first pressure disk 1 and second pressure disk 2 and be connected respectively, and the mode of dismantling the connection can be bolted connection or joint.

Specifically, for example, the first end of the connecting member 5 is bolted to the first pressure plate 1, a bolt hole 53 may be formed at the first end of the connecting member 5, a bolt through hole 12 may be formed at a position corresponding to the first pressure plate 1, and the bolt 9 may be screwed with the bolt hole 53 after passing through the bolt through hole 12 in the axial direction. Similarly, the second end of the connecting member 5 may also be bolted to the second pressure plate 2, a bolt hole 53 'may be formed in the second end of the connecting member 5, a bolt through hole 22 may be formed in a position corresponding to the second pressure plate 2, and the bolt 9 may be screwed to the bolt hole 53' after passing through the bolt through hole 22 in the axial direction. Or at least one of the two ends of the connecting piece 5 forms a bolt column, and the two ends of the connecting piece 5 penetrate through the bolt through holes 12 and are in threaded connection with the bolt column by nuts. Both ends adopt detachable connected mode simultaneously to make things convenient for the tightening and loosening of connecting piece 5 and first pressure disk 1, connecting piece 5 and second pressure disk 2.

The ring sieve sheets 3 are movably arranged on the connecting piece 5 along the axial direction, when the locking connecting piece 5 and the first pressure plate 1 and the second pressure plate 2 are locked, the first pressure plate 1 and the second pressure plate 2 move oppositely along the axial direction, and then the ring sieve sheets 3 and the spacing pieces 4 between the first pressure plate 1 and the second pressure plate 2 are pressed tightly, therefore, a sieving area 6 is formed by a gap between the ring sieve sheets 3.

Specifically, the spacer 4 is disposed between adjacent ring screen pieces 3, when the first platen 1 and the second platen 2 are pressed, one ring screen piece 3, the spacer 4 and the next ring screen piece 3 are tightly attached, and the gap between adjacent ring screen pieces 3 is controlled by the thickness of the spacer 4, so as to finally obtain the required screening area 6.

It will be appreciated that when the cross-section of the ring screen 3 is rectangular, the width of the screening area 6 between the ring screen 3 is the thickness of the spacer 4, and when the cross-section of the ring screen 3 is T-shaped, triangular or otherwise, the width of the screening area 6 is proportional to the thickness of the spacer 4.

After the separating device is assembled in the grinding cylinder, the ground materials enter the inner side from the outer side of the separating device through the screening area 6 along the radial direction and finally flow out from the outlet of the grinding cylinder, and the mixed grinding media are blocked outside by the annular screening sheets 3, so that the separation of the materials and the grinding media is effectively realized.

When the grinding medium is found to be blocked in the screening area 6, the connecting piece 5 and the first pressure plate 1 can be loosened, the connecting piece 5 is connected with the second pressure plate 2, the first pressure plate 1 and the second pressure plate 2 lose external action and are loosened along the axial direction, the ring screen pieces 3 move along the axial direction, the ring screen pieces 3 and the spacing pieces 4 are not tightly attached to each other, gaps between the adjacent ring screen pieces 3 are increased, the clamped grinding medium can be conveniently and freely dropped, after the grinding medium is separated from the separating device, the connecting piece 5 and the first pressure plate 1 are reconnected, the connecting piece 5 and the second pressure plate 2 are enabled to provide the screening function again, the whole bead string maintenance process is convenient, the ring screen pieces 3 are not required to be pried and knocked, accidental abrasion of the ring screen pieces 3 is prevented, and the service life of the equipment is finally prolonged.

In a possible embodiment, as shown in fig. 3 to 6, a plurality of connecting pieces 5 may be uniformly distributed between the first pressure plate 1 and the second pressure plate 2 along a ring shape, so that each ring screen piece 3 is disposed on the plurality of connecting pieces 5, the fixing effect along the circumferential direction and the radial direction is good, and the ring screen pieces 3 can be prevented from being laterally deviated.

In a possible embodiment, as shown in fig. 3 to 8 and 11 to 13, each ring screen piece 3 includes a plurality of first connecting portions 31 adapted to the connecting members 5, and the adaptation referred to herein is that after the ring screen piece 3 is connected to the connecting members 5 through the first connecting portions 31, no shaking is generated in the circumferential direction or the radial direction, but the ring screen piece 3 can move on the connecting members 5 in the axial direction.

In a possible embodiment, as shown in fig. 3 to 6 and fig. 11 to 13, the first connecting portions 31 are through holes, the connecting members 5 may be rod members, and the plurality of connecting members 5 pass through the corresponding first connecting portions 31 on each ring screen segment 3, that is, each ring screen segment 3 may be simultaneously disposed on the plurality of connecting members 5 to move in the axial direction and prevent the ring screen segments 3 from moving in the circumferential direction and the radial direction.

In a possible embodiment, as shown in fig. 7 and 8, the connecting member 5 includes a third connecting portion 51 movably engaged with the first connecting portion 31, one of the first connecting portion 31 and the third connecting portion 51 is a clamping block, and the other is a clamping groove extending in the axial direction, so that the ring screen segment 3 can slide in the axial direction through the first connecting portion 31 and the third connecting portion 51.

In a possible embodiment, the spacer 4 may be fixedly connected with the ring screen 3, as shown in fig. 11, the spacer 4 may be integrally connected with the ring screen 3, that is, the ring screen 3 is manufactured into a component with a convex, cross or other cross section by means of integral casting, and the part protruding in the axial direction is the spacer 4, and the connection strength between the two is high, so that the large extrusion force from the material and the grinding medium can be effectively resisted.

In a possible embodiment, as shown in fig. 5, 7, 12 and 13, the distance piece 4 may be connected with the ring screen 3 by clamping, welding or bolting, that is, the distance piece 4 and the ring screen 3 are separately processed and then clamped or connected and assembled into a whole by the screw 10, which is simple in process and low in cost.

As shown in fig. 7 and 13, the spacer 4 and the ring screen 3 may be connected by clamping or bolts. When the above manner is adopted, the ring screen 3 may further include a positioning groove 32 matched with the spacing member 4 to facilitate the assembling and positioning between the two. The fitting here means that the positioning groove 32 is sized and shaped to conform to the end face of the spacer 4, so that no gap or a small gap is left between the spacer 4 and the positioning groove 32 when the latter is placed therein.

It is to be understood that, as shown in fig. 3, 4 and 13, between two adjacent ring screen sheets 3, there is a spacer 4 on at least one of the ring screen sheets 3. The two side surfaces or one of the side surfaces of the ring screen pieces 3 can be connected with the spacing pieces 4, namely, the gap between two adjacent ring screen pieces 3 can be controlled by the spacing pieces 4 on one ring screen piece 3 alone or by the combination of the spacing pieces 4 on the mutually facing surfaces of the two ring screen pieces 3.

In a possible embodiment, as shown in fig. 3, 4 and 8, the spacer 4 comprises a second connecting portion 41 adapted to the connecting member 5, the second connecting portion 41 being movably connected to the connecting member 5. The fitting referred to herein means that the spacer 4 is connected to the connecting member 5 by the second connecting portion 41, and then, the spacer 4 is not moved in the circumferential direction or the radial direction but is moved in the axial direction on the connecting member 5. The spacer 4 may be circular, drop-shaped or polygonal as desired to reduce the large compressive forces from the material and grinding media.

Specifically, as shown in fig. 3 and 4, the second connection parts 41 may be through-holes, a plurality of connection members 5 pass through the corresponding second connection parts 41, and spacers 4 are disposed between adjacent ring screens 3 to provide a space. When the first connecting portion 31 is a through hole, the ring screen pieces 3 and the spacing pieces 4 can be sequentially movably arranged in series on the connecting member 5, and the movement is axial movement.

It is understood that one spacer element 4 may be provided with only one second connection 41, whereby one connection element 5 can only pass through one of the spacer elements 4 on the same ring screen segment 3. If the distance elements 4 are extended in circumferential direction in segments, one distance element 4 may also be provided with a plurality of second connecting portions 41, whereby a plurality of connecting pieces 5 are passed through a corresponding one of the second connecting portions 41 of a plurality of distance elements 4 on one and the same ring screen segment 3.

In a possible embodiment, as shown in fig. 8, the connecting element 5 includes a fourth connecting portion 52 movably engaged with the second connecting portion 41, one of the second connecting portion 41 and the fourth connecting portion 52 is a latch, and the other is a slot extending along the axial direction; so that the spacer 4 can slide in the axial direction through the second connecting portion 41 and the fourth connecting portion 52.

In one possible embodiment, as shown in fig. 5 and 6, the cross section of the ring screen segments 3 is T-shaped or triangular, the second ends 33 with larger width of the ring screen segments 3 face radially outwards, the gaps between the second ends 33 of adjacent ring screen segments 3 form the screening area 6, and the material and the grinding media can be separated by controlling the gaps between the second ends 33. The first ends 37 of the ring screen pieces 3 with smaller width face inwards along the radial direction, and the gaps between the first ends 37 of the adjacent ring screen pieces 3 can form a bulk material area 7 with larger width, so that the materials can pass through quickly to avoid the blockage of accumulated materials. In addition, because wear needs to be considered, if the ring screen 3 is triangular, the thickness of the screening region 6 from the outer side to the inner side is relatively thin, and therefore the width of the screening region 6 needs to be checked in time, if the screen columns 3 are arranged to be T-shaped, namely, the screening region 6 protrudes outwards from two sides of the top of the triangle to the same thickness, so as to ensure the thickness of the screening region 6 from the outer side to the inner side, and therefore the service life of the separation device is prolonged.

In a possible embodiment, as shown in fig. 3, 5, 9 and 10, the separating device comprises a first connecting ring 100, a first side of the first connecting ring 100 being connected with the ring screen 3, a second side of the first connecting ring 100 facing away from the ring screen 3 comprising a first projection 101 projecting in the axial direction; the first surface of the first pressure plate 1 facing the second pressure plate 2 comprises a first groove 11, the first groove 11 is axially recessed to form a first stop surface 111 and a second stop surface 112 which are spaced, and the first protrusion 101 is fittingly inserted into the first groove 11. The fitting here means that the first protrusion 101 is axially fitted into the first groove 11 and is fixed relative to the first groove in the radial direction.

Specifically, in the assembly, the first stopper surface 111 is attached to the first outer side surface 351 of the first protrusion 101 in the circumferential direction, and the second stopper surface 112 is attached to the first inner side surface 103 of the first protrusion 101 in the circumferential direction. Thus, the first stop surface 111 and the first outer side surface 102 can form one stop surface for preventing the grinding medium from running out, and the second stop surface 112 and the first inner side surface 103 can form the other stop surface for preventing the grinding medium from running out; and then the grinding medium can enter the inner side from the outer side of the separation device through the sealing of the two spigot surfaces, the two spigot surfaces effectively prolong the length of the spigot contact surface, and finally the possibility of bead leakage at the combination part of the first convex part 101 and the first groove 11 is reduced.

Similarly, as shown in fig. 3, 5, 9 and 10, the separating apparatus comprises a secondary connecting ring 200, a first side of the secondary connecting ring 200 being connected with the ring screen 3, a second side of the secondary connecting ring 200 facing away from the ring screen 3 comprising a second protrusion 201 protruding in the axial direction; the first surface of the second pressure plate 2 facing the first pressure plate 1 comprises a second groove 21, the second groove 21 is axially recessed to form a third stop surface 211 and a fourth stop surface 212 which are spaced, and the second convex part 201 is fittingly embedded into the second groove 21.

Specifically, in the assembly, the third stop surface 211 is attached to the second outer side surface 202 of the second protrusion 201 in the circumferential direction, and the fourth stop surface 212 is attached to the second inner side surface 203 of the second protrusion 201 in the circumferential direction, where the attachment means that no gap or a small gap exists between the two.

The third stop surface 211 and the second outer side surface 202 can form one stop surface for preventing the grinding medium from running out, and the fourth stop surface 212 and the second inner side surface 203 can form the other stop surface for preventing the grinding medium from running out; and then the grinding medium can enter the inner side from the outer side of the separation device through the sealing of the two spigot surfaces, the length of the spigot contact surface is effectively prolonged, and the possibility of bead leakage at the joint part of the second convex part 201 and the second groove 21 is finally reduced.

A grinding mill of the embodiment of this application includes grinding vessel and any one of the above-mentioned embodiments of separator, separator sets up in the grinding vessel.

Specifically, the grinding machine comprises a main shaft, a stirrer arranged on the main shaft and a driving source for driving the main shaft, an outlet is formed in the grinding cylinder, the separating device is communicated with the outlet, the driving source drives the main shaft to drive the stirrer to rotate, the grinding medium in the grinding cylinder is pushed to move with the material so as to grind the material, and the material after being ground is separated by the separating device and is discharged from the outlet.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A separator for a grinding mill, characterized in that: the device comprises a first pressure plate (1), a second pressure plate (2), a plurality of ring screen pieces (3), a plurality of spacing pieces (4) and a plurality of connecting pieces (5), wherein two ends of each connecting piece (5) are detachably connected with the first pressure plate (1) and the second pressure plate (2) respectively, the ring screen pieces (3) are axially and movably arranged on the connecting pieces (5), and the spacing pieces (4) are arranged between the adjacent ring screen pieces (3); when the connecting piece (5) is locked with the first pressure plate (1) and the second pressure plate (2), a screening area (6) is formed by a gap between the ring screen pieces (3).

2. The separation device of claim 1, wherein: each ring screen piece (3) comprises a plurality of first connecting parts (31) matched with the connecting pieces (5).

3. The separation device of claim 2, wherein: the first connecting parts (31) are through holes, and the connecting pieces (5) penetrate through the corresponding first connecting parts (31) on each ring screen piece (3).

4. The separation device of claim 2, wherein: the connecting piece (5) comprises a third connecting part (51) movably matched with the first connecting part (31), one of the first connecting part (31) and the third connecting part (51) is a clamping block, and the other clamping groove extends along the axial direction.

5. The separation device according to any one of claims 1 to 4, wherein: the distance piece (4) and the ring screen piece (3) are integrally connected, welded, clamped or bolted.

6. The separation device according to any one of claims 1 to 4, wherein: spacer (4) with ring sieve piece (3) adopt joint or bolted connection, just ring sieve piece (3) including with constant head tank (32) of spacer (4) looks adaptation.

7. The separation device according to any one of claims 1 to 4, wherein: the spacer (4) comprises a second connecting part (41) matched with the connecting part (5), and the second connecting part (41) is movably connected with the connecting part (5).

8. The separation device of claim 7, wherein: the second connecting parts (41) are through holes, and the connecting pieces (5) penetrate through the corresponding second connecting parts (41).

9. The separation device of claim 7, wherein: the connecting piece (5) comprises a fourth connecting part (52) movably matched with the second connecting part (41), one of the second connecting part (41) and the fourth connecting part (52) is a clamping block, and the other clamping groove extends along the axial direction.

10. The separation device according to any one of claims 1 to 4, wherein: the cross section of the ring screen sheet (3) is T-shaped or triangular, the second end with larger width of the ring screen sheet (3) faces outwards along the radial direction, and the screening area (6) is formed by the gap between the second ends of the adjacent ring screen sheets (3).

11. The separation device according to any one of claims 1 to 4, wherein: the separating device comprises a first connecting ring (100), a first side of the first connecting ring (100) is connected with the ring screen sheet (3), and a second side of the first connecting ring (100) facing away from the ring screen sheet (3) comprises a first convex part (101) protruding along the axial direction;

first pressure disk (1) face including first groove (11) on the first face of second pressure disk (2), first groove (11) are followed the axial and are sunken to form spaced first fender face (111) and second fender face (112) of ending, the embedding of first convex part (101) suitability first groove (11), wherein, first fender face (111) of ending with first convex part (101) along the laminating of first lateral surface (102) of circumference, second fender face (112) of ending with the laminating of first lateral surface (103) of first convex part (101) along circumference.

12. The separation device according to any one of claims 1 to 4, wherein: the separating device comprises a second connecting ring (200), a first side of the second connecting ring (200) is connected with the ring screen sheet (3), and a second side of the second connecting ring (200) facing away from the ring screen sheet (3) comprises a second convex part (201) protruding along the axial direction;

second pressure disk (2) face including second groove (21) on the first face of first pressure disk (1), second groove (21) are followed the axial and are sunken to form spaced third and end face (211) and fourth and end face (212), embedding of second convex part (201) suitability second groove (21), wherein, third end face (211) with second convex part (201) along the laminating of second outside surface (202) of circumference, fourth end face (212) with the laminating of second inside surface (203) of circumference of second convex part (201).

13. A grinding machine characterized in that: comprising a grinding cylinder and a separating device according to any one of claims 1 to 12, which is arranged in the grinding cylinder.

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