Sintering furnace for combining silicon nitride with silicon carbide

Abstract

The utility model provides a sintering furnace for combining silicon nitride with silicon carbide, which relates to the technical field of sintering furnaces and comprises a bottom plate and a sintering furnace body, and a feed hopper is fixedly mounted at the top of the sintering furnace body. According to the utility model, the filter screen and other structures are arranged, waste gas can be filtered and purified through the filter screen, meanwhile, when impurities on the filter screen are more, the limiting plate can be pushed upwards, so that the limiting plate slides upwards in the empty slot, the limiting plate can release the limitation on the mounting frame after sliding for a certain distance, and then the handle is pulled, so that the waste gas can be filtered and purified. The mounting frame is driven by the handle to slide in the sliding groove, the filter screen can be taken out to be cleaned after sliding for a certain distance, waste gas generated in the sintering process can be filtered and purified through the structure, and then the situation that the waste gas is directly discharged without purification, and consequently the environment is polluted is effectively avoided; and meanwhile, when impurities on the filter screen are more, the filter screen can be quickly disassembled and cleaned, so that the maintenance efficiency of the filter screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a sintering furnace for combining silicon nitride with silicon carbide. Background Art

[0002] The silicon carbide sintering furnace is a device specially used for high temperature treatment and sintering of silicon carbide materials.

[0003] Publication No. CN217005301U discloses a vacuum sintering furnace for the production of silicon carbide ceramic products, including a box and a sintering furnace body, the inner wall of the box is fixedly connected with a connecting block, the other side of the connecting block is fixedly connected to one side of the sintering furnace body, the surface of the sintering furnace body is fixedly connected to the inner wall of the box, the bottom of the box is fixedly connected with a support column, the inside of the sintering furnace body is provided with a pushing mechanism, the bottom of the pushing mechanism is fixedly connected with a placing plate, the outside of the sintering furnace body is provided with a cooling mechanism, the top of the pushing mechanism is fixedly connected with a storage box, and the bottom of the storage box is welded to the top of the box. The utility model solves the problem that the existing vacuum sintering furnace has a slow cooling speed during cooling, resulting in low working efficiency, and after the vacuum sintering furnace is sintered and cooled, the inside is still at a high temperature, and there are certain safety hazards when the mold is directly removed from the inside of the sintering furnace by manual labor, which is not conducive to people's use. However, the sintering furnace is not provided with an exhaust gas purification mechanism, which results in the exhaust gas generated during the sintering process being directly discharged without purification, which will pollute the environment. The sintering furnace still has shortcomings and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a sintering furnace for silicon nitride combined with silicon carbide, comprising a bottom plate and a sintering furnace body, a feed hopper is fixedly installed on the top of the sintering furnace body, a fixing sleeve is fixedly installed on the bottom outer wall of the sintering furnace body, a slag discharge port is opened on one side of the fixing sleeve, a cover plate is installed on the side of the fixing sleeve close to the slag discharge port, a hinge is fixedly installed at the connection between the cover plate and the fixing sleeve, a purification tank is fixedly installed on the top of the bottom plate, a rectangular frame is fixedly installed on the outer wall of the purification tank, a slide groove is opened on one side of the rectangular frame, a mounting frame is slidably connected inside the slide groove, a filter screen is evenly fixedly installed inside the mounting frame, a handle is fixedly installed on the side of the mounting frame away from the slide groove, a bracket is fixedly installed on the top of the rectangular frame, an empty slot is opened through the top of the bracket, a limiting plate is slidably connected inside the empty slot, limiting strips are symmetrically fixedly installed on the surface of the limiting plate, and an air duct is fixedly installed on the top of the purification tank.

[0006] Preferably, the cover plate is rotatably connected to the fixing sleeve, a handle is fixedly mounted on the surface of the cover plate, and a dustproof net is fixedly mounted inside the air duct. Here, the handle facilitates opening the cover plate, and the dustproof net improves the dustproof effect of the air duct.

[0007] Preferably, the sintering furnace body is located on the top of the bottom plate, and the sintering furnace body and the bottom plate are fixedly connected. Here, the use effect of the sintering furnace body is improved by the fixed connection.

[0008] Preferably, an exhaust fan is fixedly installed on the top of the bottom plate, a pipe 1 is fixedly installed on the input end of the exhaust fan, and a pipe 2 is fixedly installed on the output end of the exhaust fan. Here, the exhaust fan can effectively transport the waste gas in the sintering furnace body from the pipe 1 to the pipe 2, and then transport it to the purification tank, thereby improving the waste gas treatment efficiency.

[0009] Preferably, a fixing frame is fixedly installed inside the air duct, a motor 1 is fixedly installed inside the fixing frame, and an exhaust fan blade is fixedly installed at the output end of the motor 1. Here, the fixing frame facilitates the installation of the motor 1, and the exhaust fan blade is driven by the motor 1 to rotate, thereby improving the exhaust efficiency of the gas in the purification tank.

[0010] Preferably, the first pipe is fixedly connected to the sintering furnace body and the fixed sleeve, and the second pipe is fixedly connected to the purification tank. Here, the waste gas transportation effect is improved by the fixed connection.

[0011] Preferably, a second motor is fixedly installed on one side of the feed hopper, a shaft is fixedly installed on the output end of the second motor, and a rotating plate is evenly fixedly installed on the outer wall of the shaft. Here, the shaft is driven to rotate by the second motor, and the shaft drives multiple sets of rotating plates to rotate during the rotation process. The rotating plates will speed up the feeding speed of the material during the rotation process, thereby effectively preventing the material from clogging the feed hopper.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by setting structures such as a rectangular frame, a slide groove, an installation frame, a filter screen, a handle, a bracket, an empty groove, a limit plate and a limit strip, the exhaust gas can be filtered and purified through the filter screen. At the same time, when there are many impurities on the filter screen, the limit plate can be pushed upward to make the limit plate slide upward inside the empty groove. After sliding a certain distance, the limit plate will release the restriction on the installation frame, and then the handle will be pulled to drive the installation frame to slide inside the slide groove through the handle. After sliding a certain distance, the filter screen can be taken out for cleaning. This structure can filter and purify the exhaust gas generated in the sintering process, thereby effectively avoiding the exhaust gas from being directly discharged without purification to pollute the environment. At the same time, when there are many impurities on the filter screen, it can also be quickly disassembled and cleaned, thereby improving the maintenance efficiency of the filter screen.

[0014] 2. In the utility model, a second motor, a shaft and a rotating plate are provided. The second motor drives the shaft to rotate. During the rotation of the shaft, the shaft drives multiple sets of rotating plates to rotate. After the rotating plates rotate, the materials are added from the feed hopper to the inside of the sintering furnace body. Then, the rotating rotating plates will speed up the feeding speed of the materials, thereby effectively preventing the materials from clogging the feed hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a schematic diagram of the overall structure of a sintering furnace for silicon nitride combined with silicon carbide;

[0016] Figure 2 A schematic diagram of a partial explosion structure of a sintering furnace for silicon nitride combined with silicon carbide is provided for the utility model;

[0017] Figure 3 The utility model provides a schematic diagram of the explosion structure of a sintering furnace for silicon nitride combined with silicon carbide from a side view;

[0018] Figure 4 The utility model proposes a sintering furnace for silicon nitride combined with silicon carbide Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 The utility model proposes a sintering furnace for silicon nitride combined with silicon carbide Figure 3 Enlarged view of point B in the middle.

[0020] Legend:

[0021] 1. Bottom plate; 2. Sintering furnace body; 3. Feed hopper; 4. Fixed sleeve; 5. Slag discharge port; 6. Cover plate; 7. Hinge; 8. Handle; 9. Purification tank; 10. Rectangular frame; 11. Slide; 12. Mounting frame; 13. Filter; 14. Handle; 15. Bracket; 16. Empty slot; 17. Limit plate; 18. Limit strip; 19. Exhaust fan; 20. Pipeline 1; 21. Pipeline 2; 22. Air duct; 23. Fixed bracket; 24. Motor 1; 25. Exhaust fan blades; 26. Dust net; 27. Motor 2; 28. Shaft; 29. ​​Turn plate. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-4The utility model provides a technical solution: a sintering furnace for silicon nitride combined with silicon carbide, comprising a bottom plate 1 and a sintering furnace body 2, a feed hopper 3 is fixedly installed on the top of the sintering furnace body 2, a fixed sleeve 4 is fixedly installed on the bottom outer wall of the sintering furnace body 2, a slag discharge port 5 is opened on one side of the fixed sleeve 4, a cover plate 6 is installed on the side of the fixed sleeve 4 close to the slag discharge port 5, a hinge 7 is fixedly installed at the connection between the cover plate 6 and the fixed sleeve 4, a purification tank 9 is fixedly installed on the top of the bottom plate 1, and a rectangular frame 1 is fixedly installed on the outer wall of the purification tank 9 0, a slide groove 11 is provided on one side of the rectangular frame 10, a mounting frame 12 is slidably connected inside the slide groove 11, a filter screen 13 is evenly fixedly installed inside the mounting frame 12, a handle 14 is fixedly installed on the side of the mounting frame 12 away from the slide groove 11, a bracket 15 is fixedly installed on the top of the rectangular frame 10, an empty groove 16 is penetrated on the top of the bracket 15, a limit plate 17 is slidably connected inside the empty groove 16, a limit strip 18 is symmetrically fixedly installed on the surface of the limit plate 17, and an air duct 22 is fixedly installed on the top of the purification tank 9. By setting up structures such as the rectangular frame 10, the slide groove 11, the installation frame 12, the filter screen 13, the handle 14, the bracket 15, the empty groove 16, the limit plate 17 and the limit strip 18, the exhaust gas can be filtered and purified through the filter screen 13. At the same time, when there are many impurities on the filter screen 13, the limit plate 17 can be pushed upward so that the limit plate 17 slides upward inside the empty groove 16. After sliding a certain distance, the limit plate 17 will release the restriction on the installation frame 12, and then the handle 14 is pulled again to drive the installation frame 12 to slide inside the slide groove 11 through the handle 14. After sliding a certain distance, the filter screen 13 can be taken out for cleaning. This structure can filter and purify the exhaust gas generated during the sintering process, thereby effectively avoiding the exhaust gas from being directly discharged without purification and polluting the environment. At the same time, when there are many impurities on the filter screen 13, it can also be quickly disassembled and cleaned, thereby improving the maintenance efficiency of the filter screen 13.

[0026] See also Figure 1-5The cover plate 6 is rotatably connected to the fixed sleeve 4, and a handle 8 is fixedly installed on the surface of the cover plate 6, which facilitates opening the cover plate 6. A dustproof net 26 is fixedly installed inside the air duct 22, and the dustproof effect of the air duct 22 is improved by the dustproof net 26. The sintering furnace body 2 is located on the top of the bottom plate 1, and the sintering furnace body 2 is fixedly connected to the bottom plate 1. The use effect of the sintering furnace body 2 is improved by the fixed connection. An exhaust fan 19 is fixedly installed on the top of the bottom plate 1, and a pipe 1 20 is fixedly installed on the input end of the exhaust fan 19, and a pipe 2 21 is fixedly installed on the output end of the exhaust fan 19. The exhaust fan 19 can effectively exhaust the dust in the sintering furnace body 2 The waste gas is transported from pipe 1 20 to pipe 2 21, and then transported to the purification tank 9, thereby improving the waste gas treatment efficiency. A fixing frame 23 is fixedly installed inside the air duct 22, and the fixing frame 23 facilitates the installation of a motor 24. A motor 24 is fixedly installed inside the fixing frame 23, and an exhaust fan blade 25 is fixedly installed at the output end of the motor 24. The exhaust fan blade 25 is driven by the motor 24 to rotate, thereby improving the exhaust efficiency of the gas in the purification tank 9. Pipe 1 20 is fixedly connected to the sintering furnace body 2 and the fixed sleeve 4, and pipe 2 21 is fixedly connected to the purification tank 9. The fixed connection improves the waste gas transportation effect.

[0027] Embodiment 2

[0028] See also Figure 2 A motor 27 is fixedly installed on one side of the feed hopper 3, and a shaft 28 is fixedly installed on the output end of the motor 27. A rotating plate 29 is evenly fixedly installed on the outer wall of the shaft 28. The shaft 28 is driven to rotate by the motor 27. During the rotation, the shaft 28 will drive multiple groups of rotating plates 29 to rotate. During the rotation, the rotating plates 29 will accelerate the feeding speed of the material, thereby effectively preventing the material from clogging the feed hopper 3.

[0029] Working principle: When in use, first start the motor 27, and the motor 27 drives the shaft 28 to rotate. During the rotation process, the shaft 28 will drive multiple sets of rotating plates 29 to rotate. After the rotating plates 29 rotate, the materials are added from the feed hopper 3 to the inside of the sintering furnace body 2. Then, the rotating rotating plates 29 will speed up the feeding speed of the materials, thereby effectively preventing the materials from clogging the feed hopper 3. When the materials enter the inside of the sintering furnace body 2, they can be sintered. After the sintering is completed, the exhaust fan 19 can be started. When the exhaust fan 19 is working, the exhaust gas in the sintering furnace body 2 will be transported from the pipe 1 20 to the pipe 2 21, and then transported into the purification tank 9. After the transportation, the motor 1 24 will be started, and the exhaust fan blades 25 will be driven to rotate by the motor 1 24. The exhaust fan blades 25 will guide the exhaust gas upward during the rotation process. The exhaust gas will pass through the filter 13 during the upward guidance process. The filter 13 will filter and purify the exhaust gas, so that the exhaust gas can meet the emission standards. The exhaust gas that meets the standards will be discharged from the air duct 22. When there are many impurities on the filter 13, the limit plate 17 can be pushed upward to make the limit plate 17 slide upward inside the empty slot 16. After sliding a certain distance, the limit plate 17 will release the restriction on the installation frame 12, and then pull the handle 14, and drive the installation frame 12 to slide inside the slide slot 11 through the handle 14. After sliding a certain distance, the filter 13 can be taken out for cleaning.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sintering furnace for bonding silicon nitride to silicon carbide, comprising a bottom plate (1) and a sintering furnace body (2), characterized in that: A feed hopper (3) is fixedly mounted on the top of the sintering furnace body (2); a fixed sleeve (4) is fixedly mounted on the bottom outer wall of the sintering furnace body (2); a slag discharge port (5) is provided on one side of the fixed sleeve (4); a cover plate (6) is installed on the side of the fixed sleeve (4) close to the slag discharge port (5); a hinge (7) is fixedly mounted at the connection between the cover plate (6) and the fixed sleeve (4); a purification tank (9) is fixedly mounted on the top of the bottom plate (1); a rectangular frame (10) is fixedly mounted on the outer wall of the purification tank (9); a slide groove (11) is provided on one side of the rectangular frame (10); The groove (11) is internally slidably connected to a mounting frame (12), a filter screen (13) is evenly fixedly installed inside the mounting frame (12), a handle (14) is fixedly installed on the side of the mounting frame (12) away from the slide groove (11), a bracket (15) is fixedly installed on the top of the rectangular frame (10), a hollow groove (16) is penetrated through the top of the bracket (15), a limit plate (17) is internally slidably connected to the hollow groove (16), a limit strip (18) is symmetrically fixedly installed on the surface of the limit plate (17), and an air duct (22) is fixedly installed on the top of the purification tank (9).

2. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 1, characterized in that: The cover plate (6) is rotatably connected to the fixing sleeve (4); a handle (8) is fixedly mounted on the surface of the cover plate (6); and a dustproof net (26) is fixedly mounted inside the air duct (22).

3. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 1, characterized in that: The sintering furnace body (2) is located on the top of the bottom plate (1), and the sintering furnace body (2) and the bottom plate (1) are fixedly connected.

4. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 1, characterized in that: An exhaust fan (19) is fixedly installed on the top of the bottom plate (1), a pipe 1 (20) is fixedly installed on the input end of the exhaust fan (19), and a pipe 2 (21) is fixedly installed on the output end of the exhaust fan (19).

5. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 1, characterized in that: A fixing frame (23) is fixedly installed inside the air duct (22), a motor 1 (24) is fixedly installed inside the fixing frame (23), and an exhaust fan blade (25) is fixedly installed at the output end of the motor 1 (24).

6. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 4, characterized in that: The pipeline one (20) is fixedly connected to the sintering furnace body (2) and the fixed sleeve (4), and the pipeline two (21) is fixedly connected to the purification tank (9).

7. The sintering furnace for silicon nitride bonded with silicon carbide according to claim 1, characterized in that: A second motor (27) is fixedly mounted on one side of the feed hopper (3), a shaft (28) is fixedly mounted on the output end of the second motor (27), and a rotating plate (29) is evenly fixedly mounted on the outer wall of the shaft (28).

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