Acid washing equipment for silicon carbide micro powder

Abstract

The utility model relates to the technical field of acid washing, and discloses acid washing equipment for silicon carbide micro powder, which comprises a cart, universal wheels are fixedly connected to the bottom of the cart, two tank bodies are fixedly connected to the top of the cart, feeding holes are formed in the tops of the two tank bodies, and the feeding holes are communicated with the cart. Material covers are fixedly connected to the tops of the two tank bodies, a plurality of supporting legs are arranged on the top of the cart, a protection assembly is arranged on the top of the feeding port, stirring assemblies are arranged in the tank bodies, a circulation assembly is arranged on the top of the cart, and a disassembly assembly is arranged in the tank bodies. According to the silicon carbide micro-powder cleaning device, by pushing the limiting column, the reset spring on the outer wall of the limiting column is driven to be compressed downwards, then the fixed circular ring is driven to move, and then the conical block is driven to move, so that the valve port is opened to enable liquid to pass through, reliable sealing can be formed, and cleaned silicon carbide micro-powder is prevented from reversely flowing back to an uncleaned area.

Description

TECHNICAL FIELD

[0001] The utility model relates to acid washing technical field especially relates to a silicon carbide micro powder's acid washing equipment. BACKGROUND

[0002] In today's highly industrialized era, silicon carbide powder is widely used in electronics, new energy, aerospace and many other fields. It has become a key raw material for manufacturing high-performance semiconductor devices, advanced ceramic matrix composites and high-efficiency heat dissipation elements due to its high temperature resistance, high hardness and good electrical properties. However, during the production process of silicon carbide powder, acidic impurities may adhere to it, which affects the purity and performance of the powder and restricts its application in high-end fields. To meet the urgent demand for high-quality silicon carbide powder in various industries, it is crucial to develop a precise, efficient and stable acid washing equipment. Such equipment not only needs to remove the acidic residues on the surface of the powder, but also needs to ensure the safety and reliability of the entire acid washing process, without introducing new impurities, providing a solid guarantee for the subsequent application of silicon carbide powder.

[0003] The traditional silicon carbide powder acid washing equipment uses simple valve systems for liquid delivery and control. These valves have poor sealing performance and low opening and closing control precision, and can only achieve basic on-off function. When the equipment is running, slight pressure fluctuations can cause liquid leakage or backflow, which cannot guarantee the precision and stability of the liquid flow in the acid washing process. In terms of filter screen application, fixed or non-conveniently removable filter screens are commonly used. Once installed, fixed filter screens cannot be removed and cleaned. As the acid washing operation continues, impurities accumulate on the filter screen, clogging the screen holes and drastically reducing the filtration efficiency, which affects the acid washing quality and overall operation efficiency of the equipment.

[0004] Due to the lack of effective anti-backflow measures, when the acid washing equipment encounters sudden failures of the liquid inlet pump, blockage of waste liquid discharge, or internal pressure imbalance during operation, the waste liquid is easily backflowed to the uncleaned powder area. On the one hand, this can cause the powder to be contaminated again by acidic impurities, greatly reducing the purity of the product and failing to meet the stringent requirements of high-end industries for the purity of silicon carbide powder. On the other hand, the backflow of waste liquid also erodes the internal components of the equipment, shortens the service life of the equipment, increases maintenance costs, and hinders the smooth production and stable output of product quality, becoming a bottleneck that needs to be broken through for the development of the industry. Therefore, a silicon carbide powder acid washing equipment is proposed to solve the above problems. SUMMARY

[0005] To overcome the above shortcomings, the present utility model provides a silicon carbide powder acid washing equipment, aiming to improve the problem of backflow of cleaned silicon carbide powder to the uncleaned area in the prior art.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of silicon carbide micro powder washes acid equipment, including trolley, the trolley bottom is fixedly connected with universal wheel, the trolley top is fixedly connected with two jar, the top of the two jar is provided with feed inlet, the top of the two jar is fixedly connected with material cover, the trolley top is provided with multiple supporting legs, the feed inlet top is provided with protection assembly, the jar is provided with stirring assembly inside, the trolley top is provided with circulation assembly, the jar is provided with dismounting assembly inside;

[0008] The protection assembly includes valve body, the valve body bottom is fixedly connected at the feed inlet top, the valve body is provided with limit post inside, the limit post outer wall is sleeved with reset spring one, the reset spring one one end is fixedly connected with fixed ring, the reset spring one other end is fixedly connected in the limit post inner wall, the valve body is fixedly connected with fixed column inside, the fixed column other end is fixedly connected at the fixed ring top, the limit post outer wall is slidably connected in the fixed ring inner wall, the limit post bottom is fixedly connected with conical block, the conical block outer wall is slidably connected in the valve body inner wall.

[0009] As further description of the above technical scheme:

[0010] The stirring assembly, the stirring assembly includes motor, the motor bottom is arranged at the material cover top, the motor output is fixedly connected with stirrer, the stirrer outer wall is rotatably connected in the jar inner wall, the two jar one side is provided with discharge port, the jar is provided with filter screen inside, the filter screen bottom is provided with ring frame.

[0011] As further description of the above technical scheme:

[0012] The circulation assembly includes water tank, the water tank bottom is fixedly connected with trolley, the water tank top is provided with water pump, the water pump input is fixedly connected with hose, the water pump output is fixedly connected with water pipe.

[0013] As further description of the above technical scheme:

[0014] The dismounting assembly includes box, the box outer wall is arranged in the ring frame inside, the box is internally provided with sliding slot.

[0015] As further description of the above technical scheme:

[0016] The filter screen is provided with connecting block inside, the connecting block top is provided with knob.

[0017] As further description of the above technical scheme:

[0018] The sliding column is internally fixedly connected with a clamping column, and the outer wall of the clamping column is slidably connected to the inner wall of the sliding groove.

[0019] As a further description of the above technical solutions:

[0020] The connecting block is internally fixedly connected with a supporting column, one end of the second reset spring is fixedly connected to the top of the supporting column, and the other end of the second reset spring is rotatably connected to the bottom of the knob.

[0021] As a further description of the above technical solutions:

[0022] The sliding column is internally fixedly connected with a clamping column, and the outer wall of the clamping column is slidably connected to the inner wall of the sliding groove.

[0023] The utility model has the following beneficial effects:

[0024] 1、 in the utility model, by pushing the limiting column, the reset spring one of the outer wall of limiting column is compressed downward, and then drives the fixed ring to move, and then drives the conical block to displace, so as to open the valve port and let liquid pass, and the fixed column limits the left and right movement of the reset spring one; When stopping adding liquid, the reset spring one is retracted upward, then drives the conical block to slide, so as to form reliable sealing, prevent the washed silicon carbide powder from flowing back to the unwashed area.

[0025] 2、 in the utility model, by counterclockwise rotating knob drives the reset spring two to retract, then drives the sliding column to displace, then drives the clamping column to move, so as to realize the disassembly of filter screen; When assembling after cleaning, press the knob to compress the reset spring two, then drives the sliding column to move, then drives the clamping column to slide, and the knob is clamped in the sliding groove by clockwise rotation, realizes the locking of connecting block and ring frame, so as to conveniently disassemble and assemble the filter screen, and conveniently clean or maintain it. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional view of the silicon carbide powder washing acid equipment is provided for the utility model;

[0027] Figure 2 A tank body cross-sectional structure schematic view of the silicon carbide powder washing acid equipment is provided for the utility model;

[0028] Figure 3 A material cover cross-sectional structure schematic view of the silicon carbide powder washing acid equipment is provided for the utility model;

[0029] Figure 4 A valve body cross-sectional structure schematic view of the silicon carbide powder washing acid equipment is provided for the utility model;

[0030] Figure 5The explosion structure diagram of the sliding column of the silicon carbide micro-powder acid washing equipment is shown in the utility model.

[0031] Legend:

[0032] 1, trolley; 2, universal wheel; 3, supporting leg; 4, tank body; 5, material cover; 6, feeding port; 7, motor; 8, stirrer; 9, discharging port; 10, hose; 11, water tank; 12, water pump; 13, water pipe; 14, valve body; 15, filter screen; 16, circular ring frame; 17, fixed column; 18, limiting column; 19, reset spring one; 20, fixed circular ring; 21, conical block; 22, sliding groove; 23, connecting block; 24, knob; 25, reset spring two; 26, supporting column; 27, sliding column; 28, clamping column; 29, box body. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Reference Figure 1 - Figure 4The utility model provides a kind of embodiment of silicon carbide micro powder's washing acid equipment, including trolley 1, trolley 1 bottom is fixedly connected with universal wheel 2, trolley 1 bottom is fixedly connected with universal wheel 2, these universal wheel 2 are made of high-quality polyurethane rubber material, its unique material property endows wheel wear resistance, even long time frequent movement equipment, can reduce wear degree, trolley 1 top is fixedly connected with two jar body 4, jar body 4 selects high-strength special engineering plastics material, this plastic not only has acid and alkali corrosion resistance, can resist the erosion of acidic solution in washing acid process, and its internal structure has good smoothness, effectively reduces material adhesion, two jar body 4 top are all provided with feed inlet 6, feed inlet 6 is made of the thickening pipe fitting of food-grade 304 stainless steel material, inner wall is treated after polishing, so that material can smoothly enter jar body 4 inside, two jar body 4 top are all fixedly connected with material cover 5, material cover 5 also uses acid and alkali resistant engineering plastics material, trolley 1 top is provided with multiple supporting legs 3, supporting leg 3 selects corrosion-resistant aluminum alloy material, its surface forms a layer of protective film, greatly enhances the ability of acid and alkali erosion, feed inlet 6 top is provided with protection assembly, jar body 4 inside is provided with stirring assembly, trolley 1 top is provided with circulation assembly, jar body 4 inside is provided with dismounting assembly, two jar body 4 one side are all provided with discharge port 9, discharge port 9 is equipped with electric regulating valve, can adjust discharge speed and flow by intelligent control system, satisfy the demand of different production stages, trolley 1 top is fixedly connected with water tank 11, water tank 11 top is provided with water pump 12, the output end of water pump 12 is then fixedly connected with water pipe 13 in the mode of flange connection, water pipe 13 selects hard PVC pipe, pipe wall thickness is accurately calculated, can withstand certain water pressure, ensure that water flow is stably conveyed, also not to be too heavy to affect the mobility of equipment whole, jar body 4 inside is provided with filter screen 15, filter screen 15 is woven with 316L stainless steel wire, the corrosion resistance of 316L stainless steel ensures that it works stably in acidic environment for a long time, its weaving technology is exquisite, mesh is uniform and fine, filter screen 15 bottom is provided with circular ring frame 16, water pipe 13 side wall is provided with protection assembly, protection assembly is used to prevent liquid backflow, protect equipment internal liquid purity, jar body 4 inside is provided with stirring assembly, stirring assembly is used to prevent micro powder deposition, so that micro powder is evenly distributed in solution, circular ring frame 16 inside is provided with dismounting assembly, dismounting assembly is used to conveniently dismount filter screen 15;

[0035] The protection assembly comprises a valve body 14 which is arranged on the side wall of the water pipe 13 by laser welding on one side and is fixedly connected to the top of the feed inlet 6 by the same welding process on the bottom, forming a liquid passage connecting body. A limiting column 18 is arranged in the valve body 14. The limiting column 18 is made of titanium alloy steel and is smoothly and roundly processed by numerical control to ensure smooth sliding operation. A reset spring 19 is sleeved on the outer wall of the limiting column 18. One end of the reset spring 19 is fixedly connected with a fixed ring 20 by riveting process, and the other end is fixedly connected to the inner wall of the limiting column 18. The limiting column 18 is made of high-strength titanium alloy steel and is smoothly and roundly processed by five-axis numerical control to ensure smooth sliding operation. A fixed column 17 is fixedly connected to the top of the fixed ring 20 on the other end of the fixed column 17. The outer wall of the limiting column 18 is slidably connected to the inner wall of the fixed ring 20. A conical block 21 is fixedly connected to the bottom of the limiting column 18. The outer wall of the conical block 21 is slidably connected to the inner wall of the valve body 14, effectively avoiding the reverse flow phenomenon and protecting the purity of the acid washing solution, laying a solid foundation for the high-quality completion of the silicon carbide powder acid washing operation.

[0036] Specifically, when facing the acid washing task of silicon carbide powder, first, the acid washing equipment is placed in a place with good ventilation, suitable space and convenient operation. After ensuring that there is no debris around the equipment to interfere with the subsequent process, the operator needs to adjust the appropriate amount of acid solution according to the process formula. Then the acid solution is injected into the tank body 4 through the feed inlet 6. The tank body 4 is made of special alloy material resistant to acid and alkali corrosion, and its wall body can effectively resist acid erosion. At this time, the motor 7 is started. The motor 7 is a high-efficiency energy-saving type with built-in intelligent temperature control and overload protection device, which can operate stably. The motor 7 drives the stirrer 8 to rotate. The paddle of the stirrer 8 is specially designed as a spiral curved surface structure, which can fully mix the acid solution and the acid washing solution in the tank body 4, accelerate the chemical reaction and avoid the deposition of the powder. After a period of continuous stirring, the solution is filtered into another tank body 4 of the same specification through the pre-connected corrosion-resistant hose 10. Then the water pump 12 is started. The water pump 12 is a centrifugal pump with large flow, high lift and good sealing. It extracts the pure liquid in the water tank 11 and injects it into the tank body 4 through the water pipe 13. When the liquid flows from the side of the tank body 4, the strong water pressure acts on the conical block 21. The conical block 21 is smoothly fitted with the inner wall of the valve body 14. Under the impact of the liquid, the limiting column 18 is displaced, the valve port is smoothly opened, and the liquid can flow freely. At the same time, the fixed columns 17 on both sides of the reset spring 19 clamp the spring, so that it can only stretch and contract along the axial direction, effectively restricting its left and right shaking, ensuring the precise and reliable opening and closing action of the valve. Once the liquid addition is stopped, the reset spring 19 retracts upward by its own elastic force, pushes the conical block 21 to slide in the valve body 14, and thus closes the valve port, building a strong defense for the washed silicon carbide powder, avoiding reverse flow, and ensuring the stable and efficient operation of the acid washing equipment.

[0037] With reference to Figure 1 , Figure 3 and Figure 5The stirring assembly comprises a motor 7 arranged at the top of the cover 5, and a stirrer 8 fixedly connected to the output end of the motor 7 in a welding manner. The stirrer 8 is rotatably connected to the inner wall of the tank body 4 through a sealing bearing, so as to ensure smooth stirring without obstruction and avoid material leakage. The inner wall of the tank body 4 is rotatably connected to the stirrer 8 through a high-precision sealing bearing, so as to ensure smooth stirring without obstruction and avoid material leakage. The two tank bodies 4 are each provided with a discharge port 9, and the discharge port 9 is provided with an electric regulating valve. The discharge speed and flow can be adjusted through an intelligent control system to meet the needs of different production stages. The tank body 4 is internally provided with a filter screen 15, and the filter screen 15 is internally provided with a connecting block 23. The connecting block 23 is made of engineering plastic by injection molding. The connecting block 23 has certain flexibility to adapt to slight deformation in the installation process and has strength to support the filter screen 15 as a whole. The filter screen 15 is internally provided with a circular ring frame 16. The circular ring frame 16 is also made of 316L stainless steel and is connected to the filter screen 15 in a welding manner to form a whole. The circular ring frame 16 provides firm support for the filter screen 15 and is convenient for subsequent disassembly and installation operation. The circulating assembly comprises a water tank 11. The water tank 11 is used as a storage tank for clean water in the acid washing process. The shell of the water tank 11 is made of a galvanized steel plate with appropriate thickness, and the inside of the water tank 11 is treated by an epoxy resin coating. The water tank 11 can effectively prevent rust pollution caused by long-term water storage and further enhance the corrosion resistance of the water tank 11. The bottom of the water tank 11 is fixedly connected to the trolley 1. The top of the water tank 11 is provided with a water pump 12. The water pump 12 is a centrifugal water pump 12. The input end of the water pump 12 is connected to a acid- and alkali-resistant rubber hose 10. The wall of the hose 10 is made of a multi-layer composite structure. The inner layer is made of corrosion-resistant rubber material. The middle layer is provided with a strength polyester fiber reinforced layer. The outer layer is further wrapped with a wear-resistant rubber protective sleeve to ensure that the hose 10 still maintains good sealing performance and flexibility under complex chemical environments and frequent bending use. The hose 10 is convenient for flexible arrangement between devices. The disassembly assembly comprises a box body 29. The box body 29 is arranged in the circular ring frame 16. The gap between the box body 29 and the circular ring frame 16 is controlled within a small range. The sealing performance of the connection part is further ensured by a sealing rubber strip to prevent the acid washing solution from seeping in to cause corrosion or impurity accumulation. The box body 29 is internally provided with a sliding groove 22. The inner wall of the sliding groove 22 is smooth and flat, and the tolerance is small. The sliding groove 22 provides a stable foundation for the sliding operation of subsequent parts. The filter screen 15 is internally provided with a connecting block 23. The top of the connecting block 23 is provided with a knob 24. The bottom of the knob 24 is fixedly connected to a sliding column 27 through an integrated molding process. The sliding column 27 is externally provided with a return spring two 25. The sliding column 27 is a solid steel column with chrome plating treatment. The sliding column 27 has good rust prevention and wear resistance. The connecting block 23 is internally provided with a support column 26. The support column 26 is a hollow stainless steel pipe structure. The support column 26 has light weight and ensures strength. One end of the return spring two 25 is fixedly connected to the top of the support column 26. The other end of the return spring two 25 is rotatably connected to the bottom of the knob 24. The spring is uniformly stressed and can flexibly adapt to the rotation operation of the knob 24 during work. The sliding column 27 is internally provided with a clamping column 28.The outer wall of the clamping column 28 is slidingly connected to the inner wall of the sliding groove 22. The clamping column 28 is made of hard alloy, and the outer wall thereof is slidingly connected to the inner wall of the sliding groove 22 with a small tolerance, so as to ensure the tightness and reliability of the connection, thereby achieving the disassembly of the filter screen 15.

[0038] Specifically, in the production process of the acid washing equipment, the filter screen 15 will be blocked after long-term high-intensity operation. First, hold the knob 24 and rotate it by 90 degrees. At this time, the second reset spring 25 connected to the bottom of the knob 24 is affected by the rotation of the knob 24. The second reset spring 25 in the stretched state is retracted upward, and the elastic sliding column 27 is driven to move along the sliding groove 22 in the box 29. The clamping column 28 fixed in the sliding column 27 also slides in the inner wall of the sliding groove 22, thereby releasing the locking state between the filter screen 15 and the circular ring frame 16, and easily achieving the disassembly of the filter screen 15. When the cleaning work is completed and the filter screen 15 needs to be reassembled, the operator only needs to rotate the knob 24 by hand, drive the second reset spring 25 downward, and limit the second reset spring 25 in the connecting block 23 to prevent it from moving horizontally, so as to ensure the accurate transmission direction of the force. The sliding column 27 is driven by the spring to slide along the sliding groove 22 again, thereby moving the clamping column 28. At the same time, the knob 24 is rotated by 90 degrees, the clamping column 28 is adjusted to the best clamping position in the sliding groove 22, and the connecting block 23 and the circular ring frame 16 are firmly locked. The disassembly and installation of the filter screen 15 can be quickly completed, and it is easy to replace different types and different precision filter screens 15. The enterprise can also flexibly adjust according to different needs such as the particle size and impurity content of the silicon carbide powder in actual production, thereby improving the adaptability of the acid washing equipment to diversified production tasks and ensuring the continuity and efficiency of enterprise production.

[0039] Working principle: when the silicon carbide powder needs to be washed with acid, first place the acid washing equipment in the right place, then inject the prepared acid solution from the feed inlet 6 into the tank body 4, start the motor 7, and stir through the motor 7 driving the stirrer 8, in the stirring process, the acid and the acid washing solution react chemically to prevent the micro powder from precipitating, after a period of stirring, then through the hose 10 into another tank body 4 for filtration, then start the water pump 12, the water pump 12 adds the liquid in the water tank 11 into the tank body 4 through the water pipe 13, when the liquid flows downward from the side, the liquid pressure pushes the conical block 21, then the conical block 21 drives the limiting column 18 to displace, so as to open the valve port, the liquid can pass through, the fixed column 17 on both sides of the reset spring I 19 limits the reset spring I 19 to prevent the reset spring I 19 from moving left and right, when the liquid addition is stopped, the reset spring I 19 retracts upward, so that the conical block 21 slides in the valve body 14, thereby forming a reliable seal, effectively preventing the washed silicon carbide powder from flowing back to the unwashed area, ensuring the normal operation of the acid washing equipment.

[0040] When the filter screen 15 of the silicon carbide powder acid washing equipment is blocked due to long-term use, rotate the knob 24 by 90 degrees, so that the reset spring II 25 retracts upward, then drives the sliding column 27 to displace, and then drives the clamping column 28 to slide in the sliding groove 22, so that the filter screen 15 can be disassembled, when cleaning is completed and assembly is needed, press the knob 24, the knob 24 drives the reset spring II 25 to compress downward, the supporting column 26 limits the reset spring II 25 to prevent the reset spring II 25 from moving, then drives the sliding column 27 to slide in the sliding groove 22, and then drives the clamping column 28 to slide, at the same time, the knob 24 is rotated by 90 degrees, so that it is clamped in the sliding groove 22, realizing the locking of the connecting block 23 and the circular ring frame 16, which can quickly disassemble the filter screen 15, making it easy to replace different types of filter screens 15, and enterprises can flexibly adjust according to actual needs, improving the adaptability of the acid washing equipment to diversified production tasks.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A plant for washing silicon carbide micropowder with acid, comprising a trolley (1), characterized in that: The trolley (1) bottom fixedly connected with universal wheel (2), the trolley (1) top fixedly connected with two jar (4), the two jar (4) top is equipped with feeding port (6), the two jar (4) top fixedly connected with material cover (5), the trolley (1) top is equipped with multiple support (3), the feeding port (6) top is equipped with protection assembly, the jar (4) inside is equipped with stirring assembly, the trolley (1) top is equipped with circulation assembly, the jar (4) inside is equipped with disassembly assembly; The protection assembly includes valve body (14), the valve body (14) bottom fixedly connected in the feeding port (6) top, the valve body (14) inside is provided with the limiting column (18), the limiting column (18) outer wall is equipped with reset spring one (19), reset spring one (19) one end is fixedly connected with fixed ring (20), the other end of reset spring one (19) is fixedly connected in the limiting column (18) inner wall, the valve body (14) inside fixedly connected with fixed column (17), the other end of fixed column (17) is fixedly connected in the fixed ring (20) top, the limiting column (18) outer wall is slidably connected in the fixed ring (20) inner wall, the limiting column (18) bottom fixedly connected with conical block (21), the conical block (21) outer wall is slidably connected in the valve body (14) inner wall.

2. The apparatus for washing silicon carbide fine powder according to claim 1, wherein: The stirring assembly, the stirring assembly includes motor (7), the motor (7) bottom is provided in the material cover (5) top, the motor (7) output fixedly connected with stirrer (8), the stirrer (8) outer wall is rotatably connected in the jar (4) inner wall, the two jar (4) one side is equipped with discharge port (9), the jar (4) inside is equipped with filter screen (15), the filter screen (15) bottom is provided with circular ring frame (16).

3. The apparatus according to claim 2, wherein: The circulation assembly includes water tank (11), the water tank (11) bottom fixedly connected with trolley (1), the water tank (11) top is equipped with water pump (12), the water pump (12) input fixedly connected with hose (10), the water pump (12) output fixedly connected with water pipe (13).

4. The apparatus according to claim 3, wherein: The disassembly assembly includes box (29), the box (29) outer wall is arranged in the circular ring frame (16) inside, the box (29) inside is provided with sliding slot (22).

5. The apparatus for washing a silicon carbide fine powder according to claim 4, wherein: The filter screen (15) inside is equipped with connecting block (23), the connecting block (23) top is equipped with knob (24).

6. The apparatus for washing a silicon carbide fine powder according to claim 5, wherein: The knob (24) bottom fixedly connected with sliding column (27), the sliding column (27) outer wall is equipped with reset spring two (25).

7. The apparatus according to claim 6, wherein: The connecting block (23) inside fixedly connected with support column (26), reset spring two (25) one end is fixedly connected in the support column (26) top, the other end of reset spring two (25) is rotatably connected in the knob (24) bottom.

8. The apparatus according to claim 7, wherein: The sliding column (27) inside fixedly connected with card column (28), the card column (28) outer wall is slidably connected in the sliding slot (22) inner wall.

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