CN216654470U - Extrusion knife for granulating and granulating equipment - Google Patents

Abstract

The utility model provides an extrusion knife for granulating and granulating equipment, wherein the extrusion knife comprises a main body and at least two blades; the main body is a cylindrical body, the main body is provided with a mounting hole penetrating along the axial direction of the main body, and the main body is provided with at least two mounting teeth along the circumferential direction; the number of the blades is the same as that of the mounting teeth, and each blade is mounted on the corresponding mounting tooth. When the extrusion cutter provided by the utility model is worn, the whole extrusion cutter does not need to be replaced, and only the cutter blade needs to be replaced through the mounting teeth. In addition, the cutting area between the extrusion knife and the granulating net is large, the extrusion frequency is high, the granulating efficiency can be effectively improved in the granulating process, the equipment failure rate is reduced, and the production stability is improved.

Description

A extrusion sword and pelletization equipment for pelletization

Technical Field

The utility model relates to the technical field of extrusion knives, in particular to an extrusion knife for granulating and granulating equipment.

Background

Since the new century, the comprehensive national force of China is greatly improved, the food, pharmaceutical and chemical industries are rapidly developed, granulation equipment is developed, the application range is wider and wider, and the method has considerable development prospect. Chinese granulation equipment enterprises are based on science and technology, absorb and introduce advanced technologies at home and abroad, continuously develop new products and are accepted by the market. Meanwhile, the lithium ion battery has reliable performance when applied to the aspect of negative electrode materials, has high specific capacity and excellent cycle performance, and is widely concerned by people.

The domestic production has lower requirements on mixing and granulating equipment for pharmacy, food and cathode materials, and has the problems of low granulating efficiency, high energy consumption, frequent inspection and maintenance times and the like. In the mixing and granulating equipment in the prior art, the granulating and extruding knife is mostly made of 304 stainless steel. The contact surface of the stainless steel blade and the granulating raw material which is extruded and abraded is large in the using process, the blade is abraded every 2-3 batches of granulating blades, and long-period continuous granulating cannot be carried out. The equipment with low efficiency and poor continuity is not beneficial to large-scale popularization.

In order to solve the problems of abrasion of a granulating extrusion knife, low production continuity, low efficiency and the like in the production process of pharmacy, chemical industry, food and lithium batteries, researchers at home and abroad carry out a lot of researches on the granulating process at the front end of the production of the pharmacy, chemical industry, food and lithium batteries.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides an extrusion knife and granulation equipment for granulation, and the extrusion knife and the granulation equipment can effectively solve the problems of wear of the granulation extrusion knife, low production continuity and efficiency and the like in the production process of pharmacy, chemical industry, food and lithium batteries.

In order to solve the technical problem, the utility model adopts the following technical scheme:

in a first aspect, the present invention provides an extrusion knife for granulation, the extrusion knife comprising a body and at least two blades;

the main body is a cylindrical body, the main body is provided with a mounting hole penetrating along the axial direction of the main body, and the main body is provided with at least two mounting teeth along the circumferential direction;

the number of the blades is the same as that of the mounting teeth, and each blade is mounted on the corresponding mounting tooth.

Further, the main body is made of metal, and/or

The blade is made of silicon nitride ceramic material;

and the inner side wall of the mounting hole is provided with a mounting groove, and the mounting groove is used for being connected with the key teeth on the rotating shaft in the granulating equipment.

Further, the mounting teeth are provided with a first mounting surface and a second mounting surface, one side edge of the first mounting surface in each mounting tooth is connected with one side edge of the second mounting surface, the end surface of one end of the blade abuts against and is connected to the first mounting surface, and the outer side wall of one end of the blade abuts against and is connected to the second mounting surface.

Further, the first mounting surface is coplanar with the axis of the body, and the second mounting surface is parallel with the axis of the body; and/or

One side edge of the first mounting surface in each mounting tooth is vertically connected with one side edge of the second mounting surface.

Further, each of the blades includes a connecting portion and a cutting portion, the connecting portion in each of the blades being connected with the cutting portion;

the connecting part is connected with the mounting teeth;

the plurality of cutting portions are arranged at intervals in the circumferential direction of the main body.

Furthermore, the outer side surface of the cutting part is arc-shaped, and the central angle corresponding to the arc is 25-45 degrees; and/or

The mounting teeth of the main body are detachably connected with the connecting portion of the blade.

In a second aspect, the present invention provides a granulation apparatus, comprising the extrusion blade, the rotating shaft, and the granulation web as described above;

the rotating shaft penetrates through the mounting hole of the main body and is fixedly connected with the main body; the granulating net is arranged on the outer side of the extrusion knife.

Further, the clearance between the granulating net and the extruding knife is 2-3 mm.

Furthermore, an installation groove is formed in the inner side wall of the installation hole, key teeth are arranged on the outer side wall of the rotating shaft, and the key teeth are clamped in the installation groove.

Further, still include:

the rotating shaft, the granulating net and the extruding knife are arranged in the shell.

The technical scheme of the utility model has the following beneficial effects:

the utility model provides an extrusion knife for granulating and granulating equipment, wherein the extrusion knife comprises a main body and at least two blades; the main body is a cylindrical body, the main body is provided with a mounting hole penetrating along the axial direction of the main body, and the main body is provided with at least two mounting teeth along the circumferential direction; the number of the blades is the same as that of the mounting teeth, and each blade is mounted on the corresponding mounting tooth. The extrusion knife and the granulating equipment comprising the extrusion knife provided by the utility model have at least the following advantages:

(1) aiming at the problems in the existing extrusion knife of the granulator, the utility model provides the extrusion knife, the main body and the blade of the extrusion knife are detachable, so that the whole extrusion knife does not need to be replaced when the extrusion knife is worn, and the blade is replaced only by installing teeth. Meanwhile, in the actual use process, the extrusion knife of the utility model can be used for replacing cutting edges of different materials and types according to different granulation requirements;

(2) the blade part of the extrusion cutter provided by the utility model is made of a non-metal material, and preferably made of a hard silicon nitride ceramic material. The hard silicon nitride ceramic material has good wear resistance, and can prolong the service life of the blade; in addition, the method can also be applied to the field with low requirements on metal impurities;

(3) the extrusion knife provided by the utility model improves the shape of the blade of the extrusion knife, and uses the blade with the arc-shaped cutting part. The 30-degree arc blade adopted by the utility model can enlarge the cutting area between the blade and the granulation net, and has higher extrusion frequency, thereby effectively improving the production efficiency. The experiment shows that compared with the traditional integrated extrusion knife, the production efficiency of the extrusion knife provided by the utility model is improved by 600kg/h per hour;

(4) according to the utility model, the clearance between the granulating net and the extrusion knife is controlled to be 2-3 mm, so that the granulating efficiency can be effectively improved in the granulating process, the equipment failure rate is reduced, and the production stability is improved.

Drawings

FIG. 1 is a schematic view of an extrusion knife used for pelletization;

FIG. 2 is a schematic structural view of a main body of an extrusion knife for pelletization;

FIG. 3 is a schematic view of the structure of the blade of the extrusion knife used for pelletization;

FIG. 4 is a schematic view of the structure of the granulating apparatus;

FIG. 5 is another schematic view of the granulation apparatus.

Reference numerals are as follows:

the mounting structure comprises a main body 1, mounting holes 11, mounting teeth 12, mounting grooves 13, a first mounting surface 14 and a second mounting surface 15;

blade 2, connecting part 21, cutting part 22;

a rotating shaft 3, a granulation screen 4, a housing 5.

Detailed Description

For a further understanding of the utility model, reference will now be made to the preferred embodiments of the utility model in conjunction with the following examples, but it will be understood that the description is intended to illustrate the features and advantages of the utility model further, and not to limit the utility model.

The extrusion knife and the granulation equipment of the present invention are described below with reference to the accompanying drawings 1 to 5.

In a first aspect, the present invention provides an extrusion knife for granulation, comprising a body 1 and at least two blades 2; the main body 1 is a cylindrical body, the main body 1 is provided with a mounting hole 11 penetrating along the axial direction of the main body 1, and the main body 1 is provided with at least two mounting teeth 12 along the circumferential direction; the number of the blades 2 and the mounting teeth 12 is the same, and each blade 2 is mounted on the corresponding mounting tooth 12. The structure schematic diagram of the extrusion knife is shown in figures 1-3.

In the present invention, an extrusion knife for pelletization is provided, which essentially comprises a two-part assembly: the blade mounting structure comprises a main body 1 and blades 2, wherein the number of the blades 2 is the same as that of the mounting teeth 12, each blade 2 is mounted on the corresponding mounting tooth 12, and the blades 2 can be mounted on the mounting teeth 12 through various methods such as bolt connection. Furthermore, the main body 1 is provided with a mounting hole 11 penetrating in the axial direction of the main body 1, the mounting hole 11 being used for connecting the pressing blade to the rotary shaft 3 in the granulating apparatus. At present, the mode of main part 1 and extrusion blade 2 integral type is adopted to traditional granulator extrusion sword, and such structure exists that the extrusion sword is changed frequently, pelletization inefficiency, equipment fault rate height problem down. Aiming at the problems existing in the extrusion knife of the existing granulator, the utility model provides the extrusion knife, the main body 1 and the blade 2 of the extrusion knife are detachable, so that the whole extrusion knife does not need to be replaced when the extrusion knife is worn, and only the blade 2 needs to be replaced through the mounting teeth 12. Meanwhile, in the actual use process, the extrusion knife of the utility model can be used for replacing cutting edges of different materials and types according to different granulation requirements.

According to some embodiments of the present invention, the body 1 is made of metal, and/or the blade 2 is made of silicon nitride ceramic; and the inner side wall of the mounting hole 11 is provided with a mounting groove 13, and the mounting groove 13 is used for being connected with the key teeth on the rotating shaft 3 in the granulating equipment.

According to the extrusion knife provided by the utility model, the material of the main body 1 and the material of the blade 2 in the extrusion knife are different, and specifically, the material of the main body 1 of the extrusion knife is a metal material, such as stainless steel. The blade 2 of the extrusion cutter is made of a non-metal material, and preferably made of a hard silicon nitride ceramic material.

The use of a hard silicon nitride ceramic material as the cutting edge has at least the following advantages: (1) the hard silicon nitride ceramic material has good wear resistance, and can prolong the service life of the blade 2; (2) can be applied to the field with low requirements on metal impurities.

In the utility model, the main body 1 of the extrusion cutter is provided with a mounting hole 11, and the inner side wall of the mounting hole 11 is provided with a mounting groove 13. In the actual use process of the extrusion knife, the extrusion knife is connected with the key teeth on the rotating shaft 3 in the granulating equipment through the mounting groove 13, so that the extrusion knife can be simply and conveniently mounted in the granulating equipment.

According to some embodiments of the present invention, the mounting teeth 12 have a first mounting surface 14 and a second mounting surface 15, one side edge of the first mounting surface 14 in each mounting tooth 12 is connected with one side edge of the second mounting surface 15, an end surface of one end of the blade 2 abuts and is connected to the first mounting surface 14, and an outer side wall of one end of the blade 2 abuts and is connected to the second mounting surface 15.

According to some embodiments of the utility model, the first mounting surface 14 is coplanar with the axis of the body 1, and the second mounting surface 15 is parallel to the axis of the body 1; and/or one side edge of the first mounting surface 14 in each mounting tooth 12 is vertically connected with one side edge of the second mounting surface 15.

The structure of the extrusion knife provided by the utility model can be understood by combining the attached drawings 1-3, wherein the mounting teeth 12 arranged on the extrusion knife body 1 are similar to a triangle in shape. Specifically, the mounting teeth 12 have a first mounting surface 14 and a second mounting surface 15, and one side edge of the first mounting surface 14 and one side edge of the second mounting surface 15 in each of the mounting teeth 12 are connected, thereby forming the mounting teeth 12. When the blade 2 is connected to the mounting tooth 12, the end face of one end of the blade 2 abuts against and is connected to the first mounting surface 14, and the outer side wall of one end of the blade 2 abuts against and is connected to the second mounting surface 15.

According to some embodiments of the utility model, each of said blades 2 comprises a connecting portion 21 and a cutting portion 22, said connecting portion 21 of each of said blades 2 being connected to said cutting portion 22; the connecting part 21 is connected with the mounting teeth 12; the plurality of cutting portions 22 are provided at intervals in the circumferential direction of the main body 1.

According to some embodiments of the utility model, the outer side of the cutting portion 22 is arc-shaped, the arc corresponding to a central angle of 25-45 °; and/or the mounting tooth 12 of the body 1 is detachably connected to the connecting portion 21 of the blade 2.

In the extrusion cutter of the present invention, the shape of the blade 2 is improved, specifically, the blade 2 includes two parts, namely, a connecting part 21 and a cutting part 22, the connecting part 21 is connected with the cutting part 22, wherein the outer side surface of the cutting part 22 is in the shape of a circular arc, the circular arc corresponds to a central angle of 25-45 °, and preferably, the circular arc corresponds to a central angle of 30 °. In the practical process, compared with the traditional 60-degree extrusion knife blade 2, the 30-degree arc blade 2 adopted by the utility model can enlarge the cutting area between the blade and the granulation net, and has higher extrusion frequency, thereby effectively improving the production efficiency. The experiment shows that compared with the traditional integrated extrusion cutter, the production efficiency of the extrusion cutter provided by the utility model is improved by 600kg/h per hour.

In a second aspect, the present invention provides a granulation apparatus, as shown in fig. 4 to 5, comprising the above extrusion knife, a rotating shaft 3, and a granulation screen 4; the rotating shaft 3 is arranged in a mounting hole 11 of the main body 1 in a penetrating manner and is fixedly connected with the main body 1; the granulation screen 4 is arranged outside the extrusion knife.

The utility model provides a granulating device comprising the extrusion knife, which further comprises a rotating shaft 3, wherein the rotating shaft 3 is arranged in the mounting hole 11 of the main body 1 in a penetrating manner and is fixedly connected with the main body 1 and used for driving the extrusion knife to operate in the actual use process. The installation method of the granulating equipment provided by the utility model comprises the following steps: firstly, the main body 1 in the extrusion knife is installed on a rotating shaft 3 of the granulating equipment through key connection, and then the blade 2 in the extrusion knife is connected and fastened with the main body 1 through a bolt. After the extrusion knife and the rotating shaft 3 are completely installed, the granulation screen 4 is installed outside the extrusion knife to complete the installation of the main components of the granulation equipment.

According to some embodiments of the utility model, the clearance between the granulation screen 4 and the extrusion knife is 2-3 mm.

In the utility model, the clearance between the granulating net 4 and the extrusion knife is controlled to be 2-3 mm, and the inventor finds that when the clearance between the granulating net 4 and the blade 2 of the extrusion knife is controlled to be 2-3 mm in multiple experiments, the granulating efficiency can be effectively improved in the granulating process, the equipment failure rate is reduced, and the production stability is improved.

According to some embodiments of the present invention, an installation groove 13 is disposed on an inner side wall of the installation hole 11, and a key tooth is disposed on an outer side wall of the rotating shaft 3, and the key tooth is engaged in the installation groove 13.

In the granulation apparatus provided in the present invention, the main body 1 portion of the extrusion blade is connected to the rotary shaft 3 of the granulation apparatus. Specifically, the main body 1 is provided with a mounting hole 11, a mounting groove 13 is formed in the inner side wall of the mounting hole 11, correspondingly, key teeth are formed in the outer side wall of the rotating shaft 3, and the key teeth on the rotating shaft 3 are clamped in the mounting groove 13.

According to some embodiments of the utility model, further comprising: the shell 5, the rotating shaft 3, the granulating net 4 and the extruding knife are arranged in the shell 5.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. An extrusion knife for pelletization, characterized in that the extrusion knife comprises a body and at least two blades;

the main body is a cylindrical body, the main body is provided with a mounting hole penetrating along the axial direction of the main body, and the main body is provided with at least two mounting teeth along the circumferential direction;

the number of the blades is the same as that of the mounting teeth, and each blade is mounted on the corresponding mounting tooth.

2. The extrusion knife of claim 1 wherein the body is metallic and/or

The blade is made of silicon nitride ceramic material;

and an installation groove is formed in the inner side wall of the installation hole and is used for being connected with a key tooth on a rotating shaft in the granulating equipment.

3. The extrusion knife of claim 1 wherein said mounting teeth have a first mounting surface and a second mounting surface, a side edge of said first mounting surface in each said mounting tooth being connected to a side edge of said second mounting surface, an end face of one end of said blade abutting and being connected to said first mounting surface, an outer side wall of one end of said blade abutting and being connected to said second mounting surface.

4. The extrusion knife of claim 3 wherein the first mounting surface is coplanar with the axis of the body and the second mounting surface is parallel with the axis of the body; and/or

One side edge of the first mounting surface in each mounting tooth is vertically connected with one side edge of the second mounting surface.

5. The extrusion knife of claim 1 wherein each of said blades includes a connecting portion and a cutting portion, said connecting portion in each of said blades being connected to said cutting portion;

the connecting part is connected with the mounting teeth;

the plurality of cutting portions are arranged at intervals in the circumferential direction of the main body.

6. The extrusion knife of claim 5 wherein the outer side of the cutting portion is arcuate with a corresponding central angle of 25-45 °; and/or

The mounting teeth of the main body are detachably connected with the connecting portion of the blade.

7. A granulation apparatus, comprising the extrusion blade, the rotary shaft, and the granulation web according to any one of claims 1 to 6;

the rotating shaft penetrates through the mounting hole of the main body and is fixedly connected with the main body; the granulating net is arranged on the outer side of the extrusion knife.

8. The granulation apparatus as claimed in claim 7, wherein the gap between the granulation screen and the pressing blade is 2-3 mm.

9. The granulating apparatus as claimed in claim 7, wherein an installation groove is provided on an inner side wall of the installation hole, and a key tooth is provided on an outer side wall of the rotary shaft, and the key tooth is engaged in the installation groove.

10. The granulation apparatus as claimed in claim 7, further comprising:

the rotating shaft, the granulating net and the extruding knife are arranged in the shell.

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