Raw material stirring device for silicon carbide production

Abstract

The utility model relates to the technical field of silicon carbide production, in particular to a raw material stirring device for silicon carbide production. Comprising a tank body, a plurality of arc-shaped supporting plates distributed in an annular array are fixedly installed on the tank body, a feeding hopper is arranged at the top of the tank body, a first motor is fixedly installed at the bottom of the tank body, and an output shaft of the first motor extends into the tank body and is provided with a stirring shaft; the bottom of the tank body is fixedly communicated with a round pipe with an opening in the top end, a discharging pipe is obliquely arranged on one side of the round pipe, a blocking block is slidably installed in the round pipe, a lead screw is fixedly installed at the bottom of the blocking block, a cylinder is fixedly installed at the bottom of the round pipe, and an internal thread cylinder is rotatably installed in the cylinder. Through the arrangement, the discharging hopper can be conveniently and rapidly blocked and opened, the problem that raw materials enter the discharging hopper before being mixed can be effectively prevented, then uniform mixing of the silicon carbide raw materials can be guaranteed, and the mixing uniformity of the silicon carbide raw materials can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide production, in particular to a raw material stirring device for silicon carbide production. Background Technique

[0002] Silicon carbide, also known as emery, is made by high-temperature smelting of raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt needs to be added when producing green silicon carbide) through a resistance furnace. Among contemporary non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and economical one. Currently, the produced silicon carbide is divided into two types: black silicon carbide and green silicon carbide, both of which are hexagonal crystals. During the production process of silicon carbide, the raw materials need to be mixed to facilitate subsequent high-temperature smelting. In the prior art, there is disclosed a raw material mixing and stirring device for silicon carbide production with the authorization announcement number CN218131390U, which includes a base, a stirring tank, a weighing and discharging mechanism, and a driving mechanism. A groove is opened at the top end of the base, the lower end of the stirring tank is installed inside the stirring tank, a driving mechanism is installed outside the stirring tank, a stirring rod is rotatably installed inside the stirring tank, the bottom end of the stirring rod passes through the stirring tank and extends into the groove, and is fixedly connected to the bottom end of the inner wall of the groove. Symmetrically installed weighing and discharging mechanisms are symmetrically arranged on both sides of the top end of the stirring tank away from the center position, feeding grooves are symmetrically penetrated and opened on both sides of the top end of the stirring tank close to the center position, and a baffle is installed at the center of the top end of the stirring tank. The utility model has a simple structure, convenient operation, integrated weighing and feeding, simplifies the process, and is safe and reliable.

[0003] However, it is found in the use of the existing raw material stirring device for silicon carbide production that it is not convenient to block and open the discharge hopper, and the problem of material storage in the discharge hopper is likely to occur, resulting in the silicon carbide raw materials entering the discharge hopper not being evenly stirred and mixed, which is not conducive to improving the mixing uniformity of the silicon carbide raw materials. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the present utility model is to provide a raw material stirring device for silicon carbide production, which is convenient for quickly blocking and opening the discharge hopper, can effectively prevent the problem that the raw materials enter the discharge hopper without being mixed, can ensure the uniform mixing of the silicon carbide raw materials, is conducive to improving the mixing uniformity of the silicon carbide raw materials, and solves the problems raised in the above background technique.

[0005] To achieve the above object, the technical solution adopted by the present utility model is as follows: A raw material stirring device for silicon carbide production, including a tank body, on which a plurality of arc-shaped support plates arranged in a circular array are fixedly installed. A feed hopper is provided at the top of the tank body, and a first motor is fixedly installed at the bottom of the tank body. The output shaft of the first motor extends into the tank body and is provided with a stirring shaft. A circular tube with an open top is fixedly connected to the bottom of the tank body. A discharge pipe is inclined on one side of the circular tube. A blocking block is slidably installed in the circular tube. A lead screw is fixedly installed at the bottom of the blocking block. A cylinder is fixedly installed at the bottom of the circular tube. An internally threaded tube is rotatably installed in the cylinder. The lead screw threadedly penetrates the internally threaded tube. A first bevel gear is fixedly sleeved on the internally threaded tube. A second motor is fixedly installed at the bottom of the tank body. A second bevel gear is provided on the output shaft of the second motor. The second bevel gear meshes with the first bevel gear.

[0006] In order to facilitate the screening of silicon carbide raw materials:

[0007] As a further improvement of the above technical solution: The tank body further includes a rectangular frame, which is inclined in the tank body. A sieve plate is slidably installed at the top of the rectangular frame. A discharge hopper adapted to the sieve plate is provided on one side of the tank body. Four rectangular through grooves arranged in a rectangular array penetrate through the rectangular frame. Vertical plates slidably penetrate through the rectangular through grooves. The top ends of the vertical plates are fixed to the bottom of the sieve plate. Two cylinders are fixedly installed at the bottom of the rectangular frame. The output rods of the cylinders are fixed to the corresponding vertical plates.

[0008] The beneficial effect of this improvement is that by setting it like this, it is convenient to screen the silicon carbide raw materials, which can effectively ensure the cleanliness of the raw materials and is beneficial to ensuring the product quality.

[0009] In order to facilitate the limitation of the stirring shaft:

[0010] As a further improvement of the above technical solution: A cross bar is fixedly installed in the tank body, and the stirring shaft rotatably penetrates through the cross bar.

[0011] The beneficial effect of this improvement is that by setting the cross bar, it is convenient to limit the stirring shaft.

[0012] In order to facilitate the limitation of the output shaft of the first motor:

[0013] As a further improvement of the above technical solution: A first through hole penetrates through the bottom inner wall of the tank body, and the output shaft of the first motor rotatably penetrates through the first through hole.

[0014] The beneficial effect of this improvement is that by setting the first through hole, it is convenient to limit the output shaft of the first motor.

[0015] In order to facilitate rapid discharging:

[0016] As a further improvement of the above technical solution: a slope is provided at the top of the plug block, and a plurality of sealing rings are fixedly sleeved on the plug block, and the sealing rings are slidably connected to the inner wall of the circular tube.

[0017] The beneficial effect of this improvement is that by providing the slope, it is convenient to quickly discharge the material.

[0018] For facilitating the lifting of the lead screw:

[0019] As a further improvement of the above technical solution: a second through hole is penetrated through the inner wall of the bottom of the circular tube, the lead screw penetrates through the second through hole, and a circular plate is fixedly installed at the bottom end of the lead screw.

[0020] The beneficial effect of this improvement is that by providing the second through hole, it is convenient for the lead screw to lift.

[0021] For facilitating the limiting of the vertical plate:

[0022] As a further improvement of the above technical solution: a limiting rod is fixedly installed in the rectangular through groove, and the limiting rod slidably penetrates through the corresponding vertical plate.

[0023] The beneficial effect of this improvement is that by providing the limiting rod, it is convenient to limit the vertical plate.

[0024] The beneficial effect of the present utility model is that by setting like this, it is convenient to quickly block and open the discharge hopper, and it can effectively prevent the problem that the raw materials enter the discharge hopper without being mixed, and further can ensure the uniform mixing of the silicon carbide raw materials, which is beneficial to improving the mixing uniformity of the silicon carbide raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the main sectional view structural schematic diagram of the present utility model;

[0026] Figure 2 is the present utility model Figure 1 the enlarged structural schematic diagram of part A therein;

[0027] Figure 3 is the present utility model Figure 1 the enlarged structural schematic diagram of part B therein;

[0028] Figure 4 is the present utility model Figure 2 the enlarged structural schematic diagram of part C therein;

[0029] Figure 5 is the three-dimensional sectional view structural schematic diagram of the plug block in the present utility model;

[0030] Figure 6 is the top view structural schematic diagram of the rectangular frame in the present utility model.

[0031] In the figure: 1. Tank body; 2. Arc-shaped support plate; 3. Feeding hopper; 4. First motor; 5. Stirring shaft; 6. Round pipe; 7. Discharge pipe; 8. Plug; 9. Lead screw; 10. Cylinder; 11. Internal thread cylinder; 12. First bevel gear; 13. Second motor; 14. Second bevel gear; 15. Rectangular frame; 16. Sieve plate; 17. Discharge hopper; 18. Rectangular through slot; 19. Vertical plate; 20. Cylinder. Specific implementation mode

[0032] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.

[0033] Such as Figures 1-6As shown in the figure, a raw material stirring device for silicon carbide production includes a tank body 1. A plurality of arc-shaped support plates 2 arranged in a circular array are fixedly installed on the tank body 1. A feed hopper 3 is provided at the top of the tank body 1. A first motor 4 is fixedly installed at the bottom of the tank body 1. The output shaft of the first motor 4 extends into the tank body 1 and is provided with a stirring shaft 5. A round pipe 6 with an open top is fixedly connected to the bottom of the tank body 1. A discharge pipe 7 is inclined on one side of the round pipe 6. A blocking block 8 is slidably installed in the round pipe 6. A lead screw 9 is fixedly installed at the bottom of the blocking block 8. A cylinder 10 is fixedly installed at the bottom of the round pipe 6. An internally threaded cylinder 11 is rotatably installed in the cylinder 10. The lead screw 9 threadedly penetrates through the internally threaded cylinder 11. A first bevel gear 12 is fixedly sleeved on the internally threaded cylinder 11. A second motor 13 is fixedly installed at the bottom of the tank body 1. A second bevel gear 14 is provided on the output shaft of the second motor 13. The second bevel gear 14 meshes with the first bevel gear 12. By setting it like this, it is convenient to quickly block and open the discharge hopper, which can effectively prevent the problem that the raw materials enter the discharge hopper without being mixed, and then can ensure the uniform mixing of silicon carbide raw materials, which is beneficial to improving the mixing uniformity of silicon carbide raw materials. The tank body 1 also includes a rectangular frame 15. The rectangular frame 15 is inclined in the tank body 1. A sieve plate 16 is slidably installed at the top of the rectangular frame 15. A discharge hopper 17 adapted to the sieve plate 16 is provided on one side of the tank body 1. Four rectangular through grooves 18 arranged in a rectangular array penetrate through the rectangular frame 15. A vertical plate 19 slidably penetrates through the rectangular through grooves 18. The top end of the vertical plate 19 is fixed to the bottom of the sieve plate 16. Two cylinders 20 are fixedly installed at the bottom of the rectangular frame 15. The output rods of the cylinders 20 are fixed to the corresponding vertical plates 19. By setting it like this, it is convenient to screen the silicon carbide raw materials, which can effectively ensure the cleanliness of the raw materials and is beneficial to ensuring the product quality. A cross bar is fixedly installed in the tank body 1. The stirring shaft 5 rotatably penetrates through the cross bar. By setting the cross bar, it is convenient to limit the stirring shaft 5. A first through hole penetrates through the bottom inner wall of the tank body 1. The output shaft of the first motor 4 rotatably penetrates through the first through hole. By setting the first through hole, it is convenient to limit the output shaft of the first motor 4. The top of the blocking block 8 is provided with an inclined surface. A plurality of sealing rings are fixedly sleeved on the blocking block 8. The sealing rings are slidably connected to the inner wall of the round pipe 6. By setting the inclined surface, it is convenient to quickly discharge the materials. A second through hole penetrates through the bottom inner wall of the round pipe 6. The lead screw 9 penetrates through the second through hole. A round plate is fixedly installed at the bottom end of the lead screw 9. By setting the second through hole, it is convenient for the lead screw 9 to lift and lower. A limiting rod is fixedly installed in the rectangular through groove 18. The limiting rod slidably penetrates through the corresponding vertical plate 19. By setting the limiting rod, it is convenient to limit the vertical plate 19.

[0034] The working principle of the present utility model is as follows: During use, first, two cylinders 20 are started. The output rods of the cylinders 20 drive the corresponding vertical plates 19 to reciprocate, causing the vertical plates 19 to be driven to reciprocate within the corresponding rectangular through slots 18. At the same time, the two vertical plates 19 drive the sieve plate 16 to reciprocate on the rectangular frame 15, and the sieve plate 16 drives the other two vertical plates 19 to reciprocate. Subsequently, silicon carbide raw materials are fed into the tank body 1 through the feed hopper 3. The silicon carbide raw materials fall onto the sieve plate 16 for screening. The fine materials continue to fall, while the coarse materials and impurities roll through the discharge hopper 17 and are discharged outside the tank body 1. Through such a setting, it is convenient to screen the silicon carbide raw materials, which can effectively ensure the cleanliness of the raw materials and is beneficial to ensuring the product quality. Subsequently, the first motor 4 is started. The output shaft of the first motor 4 drives the stirring shaft 5 to rotate, and the stirring shaft 5 stirs and mixes the raw materials in the tank body 1, and the raw materials are evenly mixed. After the stirring is completed, the second motor 13 is started. The output shaft of the second motor 13 drives the second bevel gear 14 to rotate, the second bevel gear 14 drives the first bevel gear 12 to rotate, the first bevel gear 12 drives the internal thread cylinder 11 to rotate within the cylinder 10, the internal thread cylinder 11 drives the lead screw 9 to descend, and the lead screw 9 drives the plug 8 to slide and descend within the round tube 6 until the nozzle of the discharge pipe 7 is exposed. The mixed raw materials in the tank body 1 fall into the round tube 6 and are discharged through the discharge pipe 7. At the same time, the stirring shaft 5 continues to rotate, causing the raw materials in the tank body 1 to be continuously pushed into the round tube 6 until the raw materials are completely discharged. Through such a setting, it is convenient to quickly block and open the discharge hopper, which can effectively prevent the problem that the raw materials enter the discharge hopper without being mixed, and thus can ensure the uniform mixing of the silicon carbide raw materials and is beneficial to improving the mixing uniformity of the silicon carbide raw materials.

[0035] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0036] In this article, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be pointed out that due to the limited nature of written expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model without improvement to other occasions, should all be regarded as the protection scope of the present utility model.

Claims

1. A raw material stirring device for silicon carbide production, comprising a tank body (1), wherein a plurality of arc-shaped support plates (2) arranged in an annular array are fixedly installed on the tank body (1), and a feed hopper (3) is arranged at the top of the tank body (1), and the characteristics are as follows: A first motor (4) is fixedly installed at the bottom of the tank body (1). The output shaft of the first motor (4) extends into the tank body (1) and is provided with a stirring shaft (5). The bottom of the tank body (1) is fixedly connected to a round pipe (6) with an open top. A discharge pipe (7) is inclined on one side of the round pipe (6). A blocking block (8) is slidably installed in the round pipe (6). A lead screw (9) is fixedly installed at the bottom of the blocking block (8). A cylinder (10) is fixedly installed at the bottom of the round pipe (6). An internally threaded cylinder (11) is rotatably installed in the cylinder (10). The lead screw (9) threadedly penetrates through the internally threaded cylinder (11). A first bevel gear (12) is fixedly sleeved on the internally threaded cylinder (11). A second motor (13) is fixedly installed at the bottom of the tank body (1). A second bevel gear (14) is provided on the output shaft of the second motor (13). The second bevel gear (14) meshes with the first bevel gear (12).

2. The raw material stirring device for silicon carbide production according to claim 1, characterized in that: The tank body (1) further includes a rectangular frame (15). The rectangular frame (15) is inclined in the tank body (1). A sieve plate (16) is slidably installed at the top of the rectangular frame (15). A discharge hopper (17) adapted to the sieve plate (16) is provided on one side of the tank body (1). Four rectangular through grooves (18) arranged in a rectangular array penetrate through the rectangular frame (15). A vertical plate (19) slidably penetrates through the rectangular through grooves (18). The top end of the vertical plate (19) is fixed to the bottom of the sieve plate (16). Two cylinders (20) are fixedly installed at the bottom of the rectangular frame (15). The output rods of the cylinders (20) are fixed to the corresponding vertical plates (19).

3. A raw material stirring device for silicon carbide production according to claim 1, characterized in that: A cross bar is fixedly installed in the tank body (1). The stirring shaft (5) rotatably penetrates through the cross bar.

4. A raw material stirring device for silicon carbide production according to claim 1, characterized in that: A first through hole penetrates through the bottom inner wall of the tank body (1). The output shaft of the first motor (4) rotatably penetrates through the first through hole.

5. The raw material stirring device for silicon carbide production according to claim 1, characterized in that: The top of the blocking block (8) is provided with an inclined surface. A plurality of sealing rings are fixedly sleeved on the blocking block (8). The sealing rings are slidably connected to the inner wall of the round pipe (6).

6. The raw material stirring device for silicon carbide production according to claim 1, wherein: A second through hole penetrates through the bottom inner wall of the round pipe (6). The lead screw (9) penetrates through the second through hole. A round plate is fixedly installed at the bottom end of the lead screw (9).

7. The raw material stirring device for silicon carbide production according to claim 2, wherein: A limiting rod is fixedly installed in the rectangular through groove (18). The limiting rod slidably penetrates through the corresponding vertical plate (19).

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