CN213669169U

CN213669169U - Granulation equipment

Info

Publication number: CN213669169U
Application number: CN202022556298.8U
Authority: CN
Inventors: 王宪波
Original assignee: Yunnan Yunji Biotechnology Co ltd
Current assignee: Yunnan Yunji Biotechnology Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-07-13
Anticipated expiration: 2030-11-06

Abstract

The utility model provides a granulating device, which comprises a granulator and a feeding piece connected with the granulator, wherein the granulator comprises a granulating bin, and the feeding piece is communicated with the granulating bin and is positioned at the top of the granulating bin; the feeding piece comprises a vacuum part and a first feeding part which are staggered with each other, one end of the first feeding part is communicated with the granulating bin, the other end of the first feeding part is connected to the raw materials, and the vacuum part is communicated with the first feeding part through the granulating bin; be equipped with the retaining member in the first feed portion, the vacuum portion starts and to the granulation storehouse evacuation to make the retaining member open, in order to make the raw materials get into the granulation storehouse through first feed portion. The utility model discloses a granulation equipment improves first feed portion, installs the retaining member additional under the condition that does not influence the feeding, has reduced revealing of raw materials, has reduced the dust content in the air, has reduced dust explosion's risk, improves the security of production process, has solved the problem that dust explosion appears easily in current granulator in the use.

Description

Granulation equipment

Technical Field

The utility model belongs to the technical field of the granulator, concretely relates to granulating equipment.

Background

The queen bee larva is a queen bee larva, which is a larva body of a fertilized egg produced by a queen bee and fed with fresh royal jelly through worker bees, and is rich in nutrition. One of the commonly adopted storage methods of queen bee embryo is freeze drying into dry powder, and the dry powder is made into queen bee embryo granules by a granulator, which is beneficial to long-term storage.

The existing granulation method usually adopts wet granulation, wherein the wet granulation is a method for preparing granules by adding an adhesive into medicinal powder and conglomerating the powder together by the bridge frame or the bonding action of the adhesive. In the existing granulator, in the wet granulation process, because dry powder is easily dispersed into the air and mixed with the air, the risk of dust explosion is easily caused, and the danger in the production process is increased.

Aiming at the potential safety hazard existing in the use process of the existing granulator, a new design needs to be provided to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a granulating equipment has solved the problem that dust explosion appears easily in current granulator in the use.

The utility model discloses the technical scheme who adopts does:

the granulating equipment comprises a granulator and a feeding piece connected with the granulator, wherein the granulator comprises a granulating bin, and the feeding piece is communicated with the granulating bin and is positioned at the top of the granulating bin;

the feeding piece comprises a vacuum part, a first feeding part and a second feeding part which are staggered with each other, one end of the first feeding part is communicated with the granulating bin, the other end of the first feeding part is connected to the raw material, the vacuum part is communicated with the first feeding part through the granulating bin, and the second feeding part is used for adding an adhesive;

be equipped with the retaining member in the first feed portion, the vacuum portion starts and to the granulation storehouse evacuation to make the retaining member open, in order to make the raw materials get into the granulation storehouse through first feed portion.

This pelletization equipment improves first feed portion, installs the retaining member additional under the condition that does not influence the feeding, has reduced revealing of raw materials, has reduced the dust content in the air, has reduced dust explosion's risk, improves production process's security.

Optionally, the first feeding part comprises a first straight pipe connected to the granulating bin and a first hose inserted on the first straight pipe, wherein the locking member is positioned on the first straight pipe, and the first hose is connected to the raw material.

Optionally, the locking piece comprises a plurality of locking blocks arranged oppositely and an elastic piece connected with the locking blocks, and the locking blocks are mutually abutted through the elastic piece;

one end of the locking block is slidably arranged on the first feeding part, the other ends of the locking block are at least partially abutted with each other to seal the first feeding part, and the elastic pieces are arranged corresponding to the locking block one by one;

when the vacuum part is vacuumized, the locking blocks slide downwards and are far away from each other, so that the first feeding part is opened.

Optionally, the sliding end of the locking block is connected with the elastic piece and is provided with a sliding shaft inserted in the first feeding part;

the abutting end of the locking block comprises an abutting surface and a sliding inclined surface positioned above the abutting surface, and part of the sliding inclined surface is inserted into the first feeding part;

correspondingly, be equipped with the first cell body that is used for holding the latch segment in the first feeding portion, be adapted to the second cell body of sliding shaft and be adapted to the joint groove on slip inclined plane, wherein, the second cell body communicates in first cell body.

Optionally, the second slot body includes vertical section and the slope section of intercommunication each other to make the slip inclined plane break away from the joint groove, so that the butt face is kept away from each other.

Optionally, the vacuum section comprises a vacuum cylinder connected to the granulation chamber, a vacuum machine located within the vacuum tube and a vacuum tube in communication with the granulation chamber, the vacuum machine being connected to the vacuum tube.

Optionally, the second feeding portion comprises a second straight pipe connected to the granulating bin and a second hose inserted on the second straight pipe, wherein the second straight pipe extends into the granulating bin, and the second hose is connected to the adhesive.

Optionally, the feeding member further comprises a cleaning part, the cleaning part comprises a third straight pipe connected to the granulating bin and a third hose inserted on the third straight pipe, wherein the third hose is connected to the cleaning liquid.

Optionally, the bottom of the granulating bin is rotatably provided with a rotary knife, and the side wall of the granulating bin is provided with a crushing knife and a push-pull valve which are staggered with each other, wherein the crushing knife is positioned above the rotary knife, and the bottom surface of the push-pull valve is flush with the bottom surface of the granulating bin.

Optionally, the rotary knife includes a knife seat rotatably disposed in the granulation chamber and a plurality of cutting parts uniformly distributed on the knife seat, wherein the knife seat is further provided with a plurality of auxiliary blades disposed above the cutting parts, and the cutting parts are obliquely disposed.

The utility model has the advantages that:

the granulating equipment controls the on-off of the first feeding part through the locking part, and is matched with the vacuum part during feeding to open the first feeding part, so that raw materials can enter conveniently, the feeding of a machine is realized, the workload is reduced, the probability of raw material pollution is reduced, and the sanitation degree is improved; during granulation, the locking piece closes the first feeding part, so that the leakage amount of raw materials from the first feeding part is reduced, and the utilization rate of the raw materials is increased; meanwhile, the concentration of dust in the air is reduced, dust explosion is avoided, and the safety of granulation is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the present granulation apparatus;

FIG. 2 is a schematic view of the engagement of the retaining member with the first tube;

FIG. 3 is a schematic view of the structure of the rotary knife;

fig. 4 is a schematic view of the structure of the push-pull valve.

In the figure: 1. a granulating bin; 2. a vacuum section; 21. a vacuum cylinder; 22. a vacuum tube; 3. a first feeding section; 31. a first straight pipe; 32. a first hose; 301. a first tank body; 302. a second tank body; 303. a clamping groove; 4. a second feeding section; 41. a second straight pipe; 42. a second hose; 5. a cleaning section; 51. a third straight pipe; 52. a third hose; 6. a rotary knife; 61. a tool apron; 62. a blade part; 63. a secondary blade; 7. a crushing knife; 8. a push-pull valve; 81. a valve body; 82. a plate body; 83. a motor; 9. a locking member; 91. and a locking block.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

For wet granulation, the raw materials are poured into a granulator during the granulation process, and the granulator first stirs the raw materials sufficiently, breaks up large blocks of raw materials to reduce the diameter of the raw material particles, and then adds a binder to polymerize the raw materials into particles. In the process, the raw materials are easy to float into the air and mixed with the air to form dust, thereby bringing about the potential safety hazard of dust explosion. The granulating equipment is designed for solving the problem of dust explosion in the granulating process.

As shown in fig. 1 to 4, the granulation apparatus of the present embodiment comprises a granulator and a feeding member connected to the granulator, wherein the granulator comprises a granulation chamber 1, and the feeding member is communicated with the granulation chamber 1 and is located at the top of the granulation chamber 1;

the feeding piece comprises a vacuum part 2, a first feeding part 3 and a second feeding part 4 which are staggered with each other, one end of the first feeding part 3 is communicated with the granulating bin 1, the other end of the first feeding part 3 is connected with the raw materials, the vacuum part 2 is communicated with the first feeding part 3 through the granulating bin 1, and the second feeding part 4 is used for adding an adhesive;

be equipped with retaining member 9 in the first feed portion 3, vacuum portion 2 starts and to the evacuation of granulation storehouse 1 to make retaining member 9 open, in order to make the raw materials get into granulation storehouse 1 through first feed portion 3.

When the granulating equipment is used, raw materials are sucked into the granulating bin 1 by a vacuumizing method, and the vacuum part 2 is started to vacuumize. Simultaneously, vacuum portion 2 communicates in first feed portion 3 through granulation storehouse 1, and air pressure acts on retaining member 9 to make retaining member 9 open first feed portion 3, air pressure acts on the raw materials through first feed portion 3, and the raw materials then gets into in the granulation storehouse 1. Thus, the opening and closing of the granulating bin 1 are reduced, the gap of the granulating bin 1 is reduced, and the raw materials are prevented from being separated from the granulating bin 1.

After the raw materials are added, the vacuum machine is closed, after the air pressure effect is lost, the locking piece 9 is reset and the first feeding portion 3 is closed, in the granulating process of the granulator, the granulator stirs the raw materials, and then the adhesive is added through the second feeding portion 4 to prepare granules. Retaining member 9 has reduced the probability that the raw materials leaked from first feed portion 3, has further reduced the leakage quantity of pelletization in-process raw materials, has increased the utilization ratio of raw materials on the one hand, has improved output, and on the other hand has reduced the quantity of dust in the air, has reduced the potential safety hazard.

The granulating equipment controls the on-off of the first feeding part 3 through the locking piece 9, and is matched with the vacuum part 2 during feeding to open the first feeding part 3, so that raw materials can enter conveniently, the feeding of a machine is realized, the workload is reduced, the probability of raw material pollution is reduced, and the sanitation degree is improved; during granulation, the locking piece 9 closes the first feeding part 3, so that the leakage amount of raw materials from the first feeding part 3 is reduced, and the utilization rate of the raw materials is increased; meanwhile, the concentration of dust in the air is reduced, dust explosion is avoided, and the safety of granulation is improved.

In the present invention, the first feeding portion 3 comprises a first straight pipe 31 connected to the granulating bin 1 and a first hose 32 inserted into the first straight pipe 31, wherein the locking member 9 is located on the first straight pipe 31, and the first hose 32 is connected to the raw material. The first straight pipe 31 provides an installation space for the locking part 9, the flexibility of the first hose 32 is good, and the adjustment position is convenient, so that the use range is favorably improved.

In the specific embodiment provided by the present invention, as an option, the locking member 9 includes a plurality of locking blocks 91 disposed opposite to each other and an elastic member connected to the locking blocks 91, and the locking blocks 91 are abutted against each other through the elastic member;

one end of the locking block 91 is slidably arranged on the first feeding part 3, the other ends of the locking block 91 are at least partially abutted with each other to seal the first feeding part 3, and the elastic pieces are arranged corresponding to the locking block 91 one by one; the locking block 91 is simple in structure, convenient to manufacture and beneficial to reducing production cost.

For the operation of the locking member 9, that is, the vacuum is applied to the vacuum part 2, the locking blocks 91 are slid downward and away from each other to open the first feeding part 3. As shown in figure 1, the first feeding part 3 is arranged at the top of the granulating bin 1, when the vacuum part 2 is vacuumized, the atmospheric pressure above the locking block 91 is greater than the atmospheric pressure below the locking block 91, and then power is provided for the movement of the locking block 91, so that the locking block 91 slides downwards. Meanwhile, during the feeding process, the raw materials exert pressure on the locking blocks 91, so that the locking blocks 91 are maintained in a state of being separated from each other.

After the vacuum part 2 stops working, the raw material stops entering the granulating bin 1, and meanwhile, the locking block 91 restores the original position under the action of the elastic piece, and the first feeding part 3 is closed again.

Complementing the structure of the locking block 91, in one possible design, as shown in fig. 2, the sliding end of the locking block 91 is connected to an elastic member (the elastic member is not shown) and provided with a sliding shaft inserted into the first feeding portion 3;

the abutting end of the locking block 91 comprises an abutting surface and a sliding inclined surface positioned above the abutting surface, and part of the sliding inclined surface is inserted into the first feeding part 3;

correspondingly, a first groove body 301 used for accommodating the locking block 91, a second groove body 302 adapted to the sliding shaft and a clamping groove 303 adapted to the sliding inclined plane are arranged in the first feeding portion 3, wherein the second groove body 302 is communicated with the first groove body 301.

When feeding, the inclined plane that slides is convenient for the raw materials and passes through latch segment 91 along the inclined plane that slides, has reduced the raw materials and has piled up the probability in latch segment 91 the place ahead, has improved feed efficiency. When pelletization, the part of slip inclined plane supports tightly in joint groove 303 under the elastic component effect, cooperates in the butt face, has increased retaining member 9 confined effect.

The sliding shaft mutually supports with second cell body 302 to control the slip direction of latch segment 91, because slip inclined plane joint is in joint groove 303 promptly, as shown in fig. 2, joint groove 303 has restricted the slip of latch segment 91, so lead through the slip of second cell body 302 to latch segment 91, with the gliding efficiency of improvement latch segment 91 for opening of first feed portion 3 helps improving feeding efficiency.

Preferably, the second groove body 302 includes a vertical section and an inclined section communicating with each other to disengage the sliding slope from the catching groove 303 to separate the abutting surfaces from each other.

In the specific embodiment provided by the utility model, as an option, vacuum portion 2 is including connecting in the vacuum tube 21 of pelletization storehouse 1, being located the vacuum machine of vacuum tube 22 and communicating in the vacuum tube 22 of pelletization storehouse 1, and the vacuum machine is connected in vacuum tube 22.

Optionally, the vacuum machine is configured as an inner vacuum machine, an outer vacuum machine or other type of vacuum equipment, which the present invention is not limited in any way.

Optionally, the vacuum tube 22 is a hose to increase flexibility of the arrangement and to increase the range of use.

In the embodiment provided by the present invention, the second feeding portion 4 comprises a second straight pipe 41 connected to the granulation chamber 1 and a second hose 42 inserted into the second straight pipe 41, wherein the second straight pipe 41 extends into the granulation chamber 1, and the second hose 42 is connected to the adhesive.

The function of the second feeding section 4 is the same as that of the first feeding section 3, except that the first feeding section 3 is conveying raw material and the second feeding section 4 is conveying adhesive. As will be readily appreciated, the second hose 42 is connected to a drive by which a force is provided to force the adhesive through the second feed 4 into the granulation chamber 1.

Preferably, the second straight pipe 41 is provided with a nozzle to increase the scattering area of the adhesive after the adhesive is separated from the second straight pipe 41, thereby improving the efficiency of mixing the adhesive and the raw material.

In the specific embodiment provided by the utility model, as an option, the feeding piece still includes cleaning part 5, and cleaning part 5 is including connecting in the third straight tube 51 of granulation storehouse 1 and pegging graft third hose 52 on third straight tube 51, and wherein, third hose 52 is connected in the washing liquid. The granulating bin 1 is cleaned through the cleaning part 5, so that the residue is reduced, the mixing of different raw materials is avoided, and the production quality is ensured.

In the specific embodiment provided by the utility model, as an option, the bottom of pelletization storehouse 1 is rotated and is equipped with rotatory sword 6, is equipped with crushing sword 7 and the push-and-pull valve 8 that stagger each other on the lateral wall of pelletization storehouse 1, and wherein, crushing sword 7 is located rotatory sword 6 top, and the bottom surface of push-and-pull valve 8 is the bottom surface parallel and level in pelletization storehouse 1.

Supplementing the structure in granulation storehouse 1, as shown in fig. 1, the rotation of rotatory sword 6 drives raw materials 1 internal motion in granulation storehouse again, cooperates the limiting displacement of the lateral wall in granulation storehouse 1 for the raw materials collision and then reduce the particle diameter, makes the raw materials intensive mixing simultaneously. Simultaneously, the crushing cutter 7 rotates to be matched with the rotating cutter 6, so that the efficiency of crushing the raw materials is improved.

Then, the adhesive is added through the second feeding portion 4, and the rotary knife 6 and the crushing knife 7 continue to rotate, so that the raw materials and the adhesive are sufficiently mixed to obtain particles.

And finally, opening the push-pull valve 8, wherein, as shown in fig. 4, the push-pull valve 8 comprises a valve body 81 connected to the granulation chamber 1, a plate body 82 arranged in the valve body 81 in a sliding manner, and a motor 83 driving the plate body 82 to slide back and forth, wherein a guide channel for particles to pass through is arranged in the valve body 81, and the plate body 82 is arranged in the guide channel in a sliding manner.

The plate body 82 is driven by the motor 83 to slide towards the direction close to the motor 83, so that the guide channel is communicated with the granulating bin 1. The rotary knife 6 rotates and pushes the particles out of the granulating bin 1, the particles enter the guide channel and enter other processing parts of the granulator through the guide of the guide channel, and the next step of processing is carried out.

It is easily understood that the present invention does not improve other parts of the granulator, so that those skilled in the art are clear and obvious to the structure and working principle of other parts of the granulator, and are not described herein again.

In a possible design, as shown in fig. 3, the rotary knife 6 comprises a knife seat 61 rotatably arranged in the granulation chamber 1 and a plurality of blade parts 62 uniformly distributed on the knife seat 61, wherein the knife seat 61 is further provided with a plurality of secondary blades 63 positioned above the blade parts 62, and the blade parts 62 are arranged in an upward inclined manner. Thus, the blade 62 and the sub-blade 63 stir the raw materials from different heights, and the mixing efficiency is improved. Meanwhile, the raw materials are thrown upwards by the inclined blade part 62, so that the stirring efficiency and the mixing efficiency are increased.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. A granulation apparatus, characterized by: the granulator comprises a granulator and a feeding piece connected with the granulator, wherein the granulator comprises a granulation bin (1), and the feeding piece is communicated with the granulation bin (1) and is positioned at the top of the granulation bin (1);

the feeding piece comprises vacuum parts (2), a first feeding part (3) and a second feeding part (4) which are staggered with each other, one end of the first feeding part (3) is communicated with the granulating bin (1), the other end of the first feeding part (3) is connected to raw materials, the vacuum parts (2) are communicated with the first feeding part (3) through the granulating bin (1), and the second feeding part (4) is used for adding an adhesive;

be equipped with retaining member (9) in first feed portion (3), vacuum portion (2) start and to granulation storehouse (1) evacuation to make retaining member (9) open, in order to make the raw materials get into granulation storehouse (1) through first feed portion (3).

2. The granulation apparatus as defined in claim 1, wherein: the first feeding part (3) comprises a first straight pipe (31) connected to the granulating bin (1) and a first hose (32) inserted on the first straight pipe (31), wherein the locking part (9) is positioned on the first straight pipe (31), and the first hose (32) is connected to the raw materials.

3. The granulation apparatus as defined in claim 1, wherein: the locking piece (9) comprises a plurality of locking blocks (91) which are arranged oppositely and an elastic piece connected with the locking blocks (91), and the locking blocks (91) are mutually abutted through the elastic piece;

one end of the locking block (91) is arranged on the first feeding part (3) in a sliding mode, at least parts of the other ends of the locking block (91) are abutted to each other to seal the first feeding part (3), and the elastic pieces are arranged corresponding to the locking block (91) one by one;

when the vacuum part (2) is vacuumized, the locking blocks (91) slide downwards and are far away from each other, so that the first feeding part (3) is opened.

4. The granulation apparatus as defined in claim 3, wherein: the sliding end of the locking block (91) is connected with the elastic piece and is provided with a sliding shaft inserted in the first feeding part (3);

the abutting end of the locking block (91) comprises an abutting surface and a sliding inclined surface positioned above the abutting surface, and part of the sliding inclined surface is inserted into the first feeding part (3);

correspondingly, be equipped with in first feed portion (3) and be used for holding first cell body (301) of latch segment (91), be adapted to the second cell body (302) of slip axle and be adapted to the joint groove (303) of slip inclined plane, wherein, second cell body (302) communicate in first cell body (301).

5. The granulation apparatus as defined in claim 4, wherein: the second groove body (302) comprises a vertical section and an inclined section which are communicated with each other, so that the sliding inclined surface is separated from the clamping groove (303), and the abutting surfaces are far away from each other.

6. The granulation apparatus as defined in claim 1, wherein: the vacuum part (2) comprises a vacuum cylinder (21) connected to the granulating bin (1), a vacuum machine positioned in the vacuum pipe (22) and the vacuum pipe (22) communicated with the granulating bin (1), and the vacuum machine is connected to the vacuum pipe (22).

7. The granulation apparatus as defined in claim 1, wherein: the second feeding part (4) comprises a second straight pipe (41) connected to the granulating bin (1) and a second hose (42) inserted on the second straight pipe (41), wherein the second straight pipe (41) extends into the granulating bin (1), and the second hose (42) is connected to the adhesive.

8. The granulation apparatus as defined in claim 1, wherein: the feeding piece further comprises a cleaning part (5), the cleaning part (5) comprises a third straight pipe (51) connected to the granulating bin (1) and a third hose (52) inserted on the third straight pipe (51), and the third hose (52) is connected to the cleaning liquid.

9. The granulation apparatus as defined in claim 1, wherein: the bottom of the granulating bin (1) is rotatably provided with a rotary knife (6), the side wall of the granulating bin (1) is provided with a crushing knife (7) and a push-pull valve (8) which are staggered with each other, wherein the crushing knife (7) is positioned above the rotary knife (6), and the bottom surface of the push-pull valve (8) is flush with the bottom surface of the granulating bin (1).

10. The granulation apparatus as defined in claim 9, wherein: the rotary knife (6) comprises a knife seat (61) rotatably arranged in the granulating bin (1) and a plurality of cutting parts (62) uniformly distributed on the knife seat (61), wherein the knife seat (61) is also provided with a plurality of auxiliary blades (63) positioned above the cutting parts (62), and the cutting parts (62) are obliquely arranged.