A crusher for crushing silicon nitride raw material

Abstract

The utility model discloses a kind of for crushing silicon nitride preparation raw material's crushers, and the technical field belongs to crushing equipment field, the crusher aims at solving the problem that conventional crusher breaks silicon nitride raw material block, because the poor wear resistance of crushing component leads to equipment rapid wear, short service life, its technical scheme main points are as follows: base top welding hollow crushing bin, crushing bin top welding feeding hopper, feeding hopper is equipped with spray assembly for dust reduction cooling;Two transmission rods are rotatably installed in crushing bin through bearing, multiple crushing discs are fixed equidistantly on transmission rod, multiple crushing teeth are detachably arranged in annular array on crushing disc, and the base material of crushing disc and crushing tooth is high manganese steel and surface is covered with tungsten carbide coating;Transmission gear is arranged at one end of transmission rod, two transmission gears are engaged, mounting bracket and driving motor are arranged on one side of base to drive transmission rod to rotate.The crusher improves the wear resistance of crushing component, prolongs the service life of equipment, and the crushing tooth is detachable and convenient to replace, which reduces maintenance cost and difficulty.

Description

Technical Field

[0001] This utility model relates to the field of agricultural fertilization technology, and in particular to a crusher for crushing raw materials for silicon nitride preparation. Background Technology

[0002] Silicon nitride is widely used in industrial production due to its excellent properties. Before processing and use, larger silicon nitride blocks need to be crushed. Currently, silicon nitride is often crushed using a double-roll crusher. This type of crusher consists of two parallel rotating rollers. The rollers are driven by a motor to rotate in opposite directions. After the material enters the gap between the two rollers, it is drawn in under the action of friction and subjected to extrusion and shearing forces, thus being crushed into small particles.

[0003] Silicon nitride has an extremely high Mohs hardness of 9, second only to diamond, and excellent wear resistance. In contrast, the crushing parts of conventional crushers have relatively poor wear resistance. When using a conventional crusher to crush silicon nitride raw material blocks, the crushing parts will wear out quickly due to the high hardness and strong wear resistance of the raw material. This not only significantly shortens the service life of the equipment, but also increases the maintenance cost of the equipment.

[0004] To address the aforementioned problems, this utility model document proposes a crusher for crushing raw materials for silicon nitride preparation. Utility Model Content

[0005] This invention provides a crusher for crushing raw materials for silicon nitride preparation, which solves the problem that in the prior art, when using conventional crushers to crush silicon nitride raw material blocks, the crushing parts will wear out rapidly due to the high hardness and strong wear resistance of the raw materials. This not only leads to a significant reduction in the service life of the equipment, but also increases the equipment maintenance cost.

[0006] This utility model provides the following technical solution:

[0007] A crusher for crushing raw materials for silicon nitride preparation, comprising:

[0008] The base has a hollow crushing chamber welded and fixed to its top. A feeding hopper is welded and fixed to the top of the crushing chamber. A spray assembly for auxiliary dust reduction and cooling is provided on the feeding hopper. Two cooperating transmission rods are rotatably installed inside the crushing chamber via bearings. Multiple crushing discs are fixedly arranged at equal intervals on the transmission rods. Multiple crushing teeth are detachably arranged in a ring array on the crushing discs. Both the crushing discs and the crushing teeth are made of high manganese steel as the base material and the surface is covered with a tungsten carbide coating.

[0009] In one possible design, the arc surface of the crushing disc is provided with a groove for engaging the bottom of the corresponding crushing tooth, and an internal hexagon bolt is provided in the mounting hole in the center of the crushing tooth, with the end of the internal hexagon bolt threadedly connected to the threaded groove in the corresponding groove.

[0010] In one possible design, one end of the transmission rod passes through the outer wall of the crushing chamber and is fixedly mounted with a corresponding transmission gear. The two transmission gears mesh with each other. A protective cover for covering the two transmission gears is fixedly mounted on the outer wall of the crushing chamber, and the protective cover is provided with multiple heat dissipation holes.

[0011] In one possible design, a mounting bracket is fixedly mounted on one side of the base, and a drive motor is fixedly mounted on the top of the mounting bracket. The output shaft of the drive motor is fixedly connected to the other end of one of the transmission rods.

[0012] In one possible design, the spray assembly includes a U-shaped frame welded and fixed to the top edge of the feeding hopper, a water spray pipe fixedly installed inside the U-shaped frame, and corresponding atomizing nozzles threaded onto multiple output ends on one side of the water spray pipe. The input end of the water spray pipe is connected to a water pump via a hose, and the input end of the water pump is connected to a water tank via a hose.

[0013] In one possible design, a receiving box is provided below the bottom opening of the crushing chamber, and the bottom of the receiving box is provided with multiple drainage holes. The receiving box is placed on top of the base, and a drainage pipe is connected to one side of the base. A sealing plug is threaded to the opening of the drainage pipe.

[0014] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0015] The working principle and usage process of this technical solution are as follows:

[0016] When in use, after the water pump is started, water enters the spray pipe through the hose and is then sprayed out by the atomizing nozzle, forming a spray at the feeding hopper to help reduce dust and cool down. At the same time, the drive motor is started, and the output shaft of the drive motor drives one of the transmission rods to rotate. Through the meshing transmission gears, the other transmission rod rotates synchronously in the opposite direction. Then, the silicon nitride preparation raw material is added from the feeding hopper into the crushing chamber. The crushing discs and crushing teeth on the two transmission rods crush the silicon nitride preparation raw material entering the crushing chamber. The raw material is crushed into smaller particles by the squeezing and shearing forces between the crushing discs and crushing teeth on the two transmission rods.

[0017] The crushed raw materials fall from the bottom opening of the crushing chamber into the receiving box. Excess water generated by the spray flows into the base through the drain hole at the bottom of the receiving box. The drain pipe can be opened periodically to drain the accumulated water.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, both the crushing disc and the crushing teeth are made of high manganese steel and covered with a tungsten carbide coating, which can effectively resist the wear of silicon nitride, a high-hardness material, thereby improving the wear resistance of the crushing components and extending the service life of the equipment.

[0020] In this invention, the crushing teeth are connected to the grooved threads on the crushing disc by internal hex bolts. This detachable design facilitates replacement after the crushing teeth wear out, reducing maintenance costs and difficulty.

[0021] This invention reduces dust during feeding and crushing by incorporating a spray component, improving the working environment. The sprayed water also absorbs the heat generated during crushing, providing a cooling effect and contributing to the stable operation of the equipment. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of a crusher for crushing raw materials for silicon nitride preparation provided in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of another perspective of a crusher for crushing raw materials for silicon nitride preparation, provided in an embodiment of the present invention.

[0024] Figure 3 A schematic diagram of the separation structure of the protective cover and crushing chamber of a crusher for crushing raw materials for silicon nitride preparation provided in an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the separation structure between the crushing teeth and the crushing disc of a crusher used for crushing raw materials for silicon nitride preparation, provided as an embodiment of the present invention.

[0026] Reference numerals: 1. Base; 2. Crushing chamber; 3. Feed hopper; 4. Drive rod; 5. Crushing disc; 6. Crushing teeth; 7. Groove; 8. Socket head bolt; 9. Drive gear; 10. Protective cover; 11. Heat dissipation hole; 12. Drive motor; 13. Mounting bracket; 14. U-shaped bracket; 15. Water spray pipe; 16. Atomizing nozzle; 17. Water pump; 18. Water tank; 19. Receiving box; 20. Drain pipe; 21. Sealing plug. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0030] In one embodiment:

[0031] Please refer to Figure 1-4 A crusher, comprising:

[0032] Base 1, which serves as the supporting foundation for the entire crusher, is made of thick steel plate and welded to ensure sufficient strength and stability. On the top of base 1, a hollow crushing chamber 2 is fixedly installed by welding. The crushing chamber 2 is made of high-strength alloy steel and its inner wall is precision machined to ensure a smooth and flat surface, reducing material residue during the crushing process.

[0033] The top of the crushing chamber 2 is also fixed to the feeding hopper 3 by welding. The feeding hopper 3 is funnel-shaped, wider at the top and narrower at the bottom, which facilitates the input of raw materials for silicon nitride preparation. A spray assembly is installed on the feeding hopper 3. The specific structure of the spray assembly is as follows: A U-shaped frame 14 is welded and fixed at the top edge of the feeding hopper 3. The U-shaped frame 14 is made of stainless steel and has good corrosion resistance. A water spray pipe 15 is fixedly installed inside the U-shaped frame 14. The water spray pipe 15 is a stainless steel round pipe with multiple mounting holes evenly spaced on it for installing atomizing nozzles 16. The atomizing nozzles 16 are fixed to the output end of the water spray pipe 15 by threaded connection. The spray angle of the atomizing nozzles 16 can be adjusted according to actual needs. The input end of 5 is connected to the output end of water pump 17 via a hose. The input end of water pump 17 is connected to water tank 18 via another hose. Water tank 18 is placed in a suitable position near the crusher. Water tank 18 is made of transparent plastic material, which makes it easy to observe the water level. It has a water inlet on the top for easy replenishment of water. Water pump 17 delivers water from water tank 18 to spray pipe 15 through hose. The water is then sprayed out from atomizing nozzle 16, forming a spray at feeding hopper 3, which plays a role in dust reduction and cooling. It can reduce dust flying during feeding and crushing, improve the working environment, and the sprayed water can also absorb the heat generated during crushing, which plays a cooling role and is conducive to the stable operation of the equipment.

[0034] Inside the crushing chamber 2, two cooperating transmission rods 4 are mounted via bearings. The transmission rods 4 are made of high-quality alloy steel and have undergone heat treatment to improve their strength and toughness. Multiple crushing discs 5 are fixedly mounted at equal intervals on the transmission rods 4. The crushing discs 5 are circular discs with grooves 7 on their arc surfaces for engaging the bottom of corresponding crushing teeth 6. The shape of the grooves 7 matches the bottom of the crushing teeth 6 to ensure that the crushing teeth 6 are securely installed. A mounting hole is opened in the center of the crushing teeth 6, and an internal hex bolt 8 is installed in the mounting hole. The end of the internal hex bolt 8 is threadedly connected to the threaded groove in the corresponding groove 7, realizing a detachable connection between the crushing teeth 6 and the crushing discs 5. After the crusher has been used for a period of time, if the crushing teeth 6 are found to be severely worn, the internal hex bolt 8 can be unscrewed with an internal hex wrench to remove the worn crushing teeth 6 from the crushing discs 5, and then a new crushing tooth 6 can be installed. The internal hex bolt 8 can be tightened again to complete the replacement. The operation is simple and convenient, reducing maintenance costs and difficulties.

[0035] The base material of the crushing disc 5 and the crushing tooth 6 is made of ZGMn13 high manganese steel. After water toughening treatment at 1050℃, a 0.3mm thick tungsten carbide coating is formed on the surface using supersonic flame spraying technology. This effectively resists the wear of silicon nitride, a high-hardness material, improves the wear resistance of the crushing parts, and extends the service life of the equipment.

[0036] One end of the transmission rod 4 penetrates the outer wall of the crushing chamber 2, and a corresponding transmission gear 9 is fixedly installed at this end. The two transmission gears 9 mesh with each other, and the two transmission rods 4 rotate synchronously in opposite directions through the transmission gears 9. A protective cover 10 for covering the two transmission gears 9 is fixedly installed on the outer wall of the crushing chamber 2 by bolts. The protective cover 10 is made of welded steel plate and has multiple heat dissipation holes 11. The heat dissipation holes 11 are evenly distributed in a circular shape to facilitate heat dissipation of the transmission gears 9 during operation. On one side of the base 1, a mounting bracket 13 is fixedly installed by welding. The mounting bracket 13 is made of angle steel. Welded together, it has high stability. A drive motor 12 is fixedly installed on the top of the mounting frame 13 by bolts. The output shaft of the drive motor 12 is fixedly connected to the other end of one of the transmission rods 4. The drive motor 12 drives the transmission rod 4 to rotate. The output shaft of the drive motor 12 drives one of the transmission rods 4 to rotate. Since the transmission gears 9 on the two transmission rods 4 mesh with each other, the other transmission rod 4 rotates synchronously in the opposite direction. After the raw material enters the crushing chamber 2, it is subjected to compression and shearing force between the crushing disc 5 and the crushing teeth 6 on the two transmission rods 4 and is crushed into smaller particles.

[0037] This application can be used to prepare raw materials by crushing silicon nitride, or it can be used in other fields applicable to this application.

[0038] In another embodiment:

[0039] A crusher for crushing raw materials for silicon nitride preparation, which is used in the field of crushers;

[0040] Please refer to Figure 1 and Figure 3 A receiving box 19 is installed below the bottom opening of the crushing chamber 2. The receiving box 19 is a square box with an opening at the top, made of stainless steel. Multiple drainage holes are opened at the bottom of the receiving box 19. The drainage holes are circular, and the diameter is determined according to the drainage requirements. The receiving box 19 is placed directly on the top of the base 1. A drain pipe 20 is connected to one side of the base 1. The drain pipe 20 is made of steel pipe, and a sealing plug 21 is threaded at its opening. The sealing plug 21 is made of rubber and has good sealing performance. The crushed raw material falls from the bottom opening of the crushing chamber 2 into the receiving box 19. Excess water generated by the spray flows into the base 1 through the drainage holes at the bottom of the receiving box 19. When there is a lot of water in the base 1, the sealing plug 21 of the drain pipe 20 can be opened periodically to drain the water.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 12 and the water pump 17 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A crusher for crushing raw materials for silicon nitride preparation, characterized in that, include: A base (1) is provided, and a hollow crushing chamber (2) is welded and fixed to the top of the base (1). A feeding hopper (3) is welded and fixed to the top of the crushing chamber (2). A spray assembly for auxiliary dust reduction and cooling is provided on the feeding hopper (3). Two transmission rods (4) are installed in the crushing chamber (2) through bearings. Multiple crushing discs (5) are fixedly arranged at equal intervals on the transmission rods (4). Multiple crushing teeth (6) are detachably arranged in a ring array on the crushing discs (5). Both the crushing discs (5) and the crushing teeth (6) are made of high manganese steel and covered with tungsten carbide coating.

2. The crusher for crushing raw materials for silicon nitride preparation according to claim 1, characterized in that, The arc surface of the crushing disc (5) is provided with a groove (7) for engaging the bottom of the corresponding crushing tooth (6). An internal hex bolt (8) is provided in the mounting hole in the center of the crushing tooth (6). The end of the internal hex bolt (8) is threadedly connected to the threaded groove in the corresponding groove (7).

3. The crusher for crushing raw materials for silicon nitride preparation according to claim 1, characterized in that, One end of the transmission rod (4) passes through the outer wall of the crushing chamber (2) and is fixedly provided with a corresponding transmission gear (9). The two transmission gears (9) mesh with each other. A protective cover (10) for covering the two transmission gears (9) is fixedly provided on the outer wall of the crushing chamber (2). The protective cover (10) is provided with a plurality of heat dissipation holes (11).

4. A crusher for crushing raw materials for silicon nitride preparation according to claim 3, characterized in that, A mounting bracket (13) is fixedly installed on one side of the base (1), and a drive motor (12) is fixedly installed on the top of the mounting bracket (13). The output shaft of the drive motor (12) is fixedly connected to the other end of one of the transmission rods (4).

5. A crusher for crushing raw materials for silicon nitride preparation according to claim 1, characterized in that, The spray assembly includes a U-shaped frame (14) welded and fixed to the top edge of the feeding hopper (3). A water spray pipe (15) is fixedly installed inside the U-shaped frame (14). Atomizing nozzles (16) are threaded onto multiple output ends on one side of the water spray pipe (15). A water pump (17) is connected to the input end of the water spray pipe (15) through a hose. A water tank (18) is connected to the input end of the water pump (17) through a hose.

6. A crusher for crushing raw materials for silicon nitride preparation according to claim 4, characterized in that, A receiving box (19) is provided below the bottom opening of the crushing chamber (2). The bottom of the receiving box (19) is provided with multiple drainage holes. The receiving box (19) is placed on the top of the base (1). A drain pipe (20) is connected to one side of the base (1). A sealing plug (21) is threaded at the opening of the drain pipe (20).

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