Production device for producing silicon carbide micro powder

Abstract

The invention relates to the technical field of grinding equipment, and discloses a silicon carbide micro powder production device which comprises a bottom frame, a fixing box is installed on the upper portion of the bottom frame, and a grinding mechanism used for grinding silicon carbide micro powder raw materials is arranged in the middle of the fixing box; the mounting frame is mounted on the upper portion of the fixing box, a driving motor used for driving parts in the grinding mechanism to operate is mounted at the top of the mounting frame, and a dust suppression mechanism used for suppressing dust of the silicon carbide micro powder raw materials is further mounted on one side of the mounting frame; the vibration screening mechanism is mounted in a material separation cavity formed in the lower part of the fixed box and is used for screening the ground silicon carbide micro powder; and the feeding auger is mounted at the front part of the fixed box and is used for conveying silicon carbide micro powder raw materials which are qualified in grinding. And through mutual cooperation of functional mechanisms such as the vibration screening mechanism and the like, the integration degree of the equipment is high, and good application value is achieved for grinding production of silicon carbide micro powder.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a production device for producing silicon carbide micropowder. Background Art

[0002] Silicon carbide powder refers to micron-sized silicon carbide powder that is ultra-finely crushed and graded using relevant equipment. It has high hardness, strong cutting ability, stable chemical properties, good thermal conductivity, and a hexagonal crystal microscopic shape. Its Mohs hardness is 9.2, which is higher than corundum and second only to diamond, cubic boron nitride and boron carbide among abrasives. Silicon carbide powder is mainly used for wire cutting of 3-12 inch single crystal silicon, polycrystalline silicon, potassium arsenide, and quartz crystals. It is an engineering processing material for the solar photovoltaic industry, semiconductor industry, and piezoelectric crystal industry.

[0003] The particle size of silicon carbide micropowder is relatively small. During processing and preparation, the precision requirements for grinding equipment are relatively high. If there are raw material particles of different particle sizes in the raw material, the large-size particles will cause great wear on the equipment and reduce the service life of the fine grinding equipment. At the same time, the existing grinding equipment usually grinds continuously in a closed container. A single device cannot achieve graded grinding and return grinding, and the processing efficiency of silicon carbide micropowder is relatively general.

[0004] Therefore, the present invention aims to provide a production device for producing silicon carbide micropowder, so as to improve the problems mentioned in the above background technology. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a production device for producing silicon carbide micropowder, which solves the problem that the existing silicon carbide micropowder production grinding equipment has a single function and cannot achieve graded grinding and return grinding.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A production device for producing silicon carbide micropowder, comprising: A base frame, a fixed box is installed on the upper part of the base frame, and a grinding mechanism for grinding silicon carbide micropowder raw materials is arranged in the middle of the fixed box; A mounting frame, which is mounted on the upper part of the fixed box, a driving motor for driving the internal parts of the grinding mechanism is installed on the top of the mounting frame, and a dust suppression mechanism for suppressing the dust of the silicon carbide micro powder raw material is also installed on one side of the mounting frame; A vibrating screening mechanism is installed in a material separation cavity provided at the lower part of the fixed box, and is used to screen the ground silicon carbide micro powder; The feeding auger is installed in the front of the fixed box and is used to convey the qualified silicon carbide micro powder raw materials; The return auger is installed at the rear of the fixed box and is used to receive the unqualified silicon carbide powder screened by the vibration screening mechanism and send it to the grinding mechanism for secondary grinding; The feeding hopper is arranged on one side of the upper part of the grinding mechanism, and the rear part thereof is connected with the discharge port of the return material auger.

[0007] Preferably, the grinding mechanism includes a grinding cylinder fixedly installed in the middle of a fixed box and a grinding body fixedly installed at the output end of a driving motor, the grinding cylinder is provided with an angle grinding groove inside, a plurality of first convex balls are provided at corresponding positions of the grinding body and the turning part of the angle grinding groove, a double-layer grinding ring is installed in the middle and upper part of the grinding body, a bottom grinding ring is installed in the lower part of the grinding body, a plurality of second convex balls are provided in a ring shape at the turning part of the angle grinding groove, and the distance between the grinding body and the angle grinding groove gradually decreases from top to bottom.

[0008] Preferably, the dust suppression mechanism includes a dust collector fixedly mounted on one side of the mounting frame and a dust collecting ring fixedly mounted on the top of the grinding cylinder, the inner wall of the dust collecting ring is provided with a plurality of through holes equidistantly arranged, and the suction end of the dust collector is connected to the interior of the dust collecting ring through a connecting pipe.

[0009] Preferably, the vibrating screening mechanism comprises a screening basket rotatably mounted inside the material separation chamber and two electric winding wheels respectively mounted on both sides of the bottom of the grinding cylinder, and screening nets for screening silicon carbide micropowder are provided on both sides of the screening basket.

[0010] Preferably, the two electric winding wheels are respectively connected to both sides of one end of the screening basket through hanging ropes, and a vibration motor is installed at the bottom of the screening basket.

[0011] Preferably, the vibrating screening mechanism also includes a feeding plate fixedly installed on one side of the distribution bin, which is used to transport the qualified ground silicon carbide micropowder to the feed port of the feeding auger. A return plate is installed on the other side of the distribution bin, which is used to transport the unqualified ground silicon carbide micropowder to the feed port of the feeding auger for return processing.

[0012] Preferably, electric slides are installed on both sides of the fixed box, and a positioning plate for limiting the displacement of the collection box is installed on one side of the electric slide.

[0013] Preferably, a storage table is installed at the front end of the base frame, and the upper part of the storage table is slidably connected to a collection box for storing silicon carbide micropowder, which is provided with a receiving interface, and the discharge port of the feeding auger is in the same position as the receiving interface on the upper part of the collection box.

[0014] Working principle: In actual use, the present invention specifically includes the following steps: Step 1: Preliminary preparation and raw material delivery. Before using this device, you need to place the collection box on the upper part of the storage table, then start the electric slides on both sides of the fixed box, drive the positioning plate to fix the collection box to prevent it from shaking, and then start the drive motor to drive the grinding body to operate, and through the external feeding device, put the silicon carbide micropowder raw material to be ground into the feeding hopper. In this step, the placement of the raw material will generate a certain amount of dust around the feeding hopper. By starting the vacuum cleaner, negative pressure can be generated inside the dust collection ring, and part of the dust raised by the feeding hopper can be sucked into the inside of the vacuum cleaner through the connecting pipe, completing a certain dust suppression effect; Step 2: Grinding of raw materials. Under the cooperation of the angle grinding groove, the first convex ball, the double-layer grinding ring, the bottom grinding ring and the second convex ball, the raw materials will be ground into powder. Since the distance between the grinding body and the angle grinding groove is gradually narrowed from top to bottom, the raw materials will gradually reach the particle size requirements in the angle grinding groove under the action of gravity, and finally enter the interior of the vibration screening mechanism through the holes at the bottom; Step 3: Discharging and secondary grinding: By starting the vibration motor, qualified silicon carbide micropowder will pass through the screening net under the action of vibration and fall onto the feeding plate. Under the guidance of the feeding plate, it enters the feeding port of the feeding auger and is transported to the collection box for collection. For silicon carbide micropowder that does not meet the qualified requirements, the electric winding wheel is started to operate, the rope is released, and one end of the screening basket is tilted at a certain angle, so that the powder can enter the return plate, enter the feeding port of the return auger under the guidance of the return plate, and then be transported into the feeding hopper through it for secondary grinding, which effectively guarantees the grinding efficiency and qualified rate of silicon carbide micropowder. Step 4: Material transfer: When the collection box is filled with silicon carbide powder, the full collection box can be removed by retracting the positioning plates on both sides, and then replaced with an empty collection box, which can then be positioned using the positioning plates. This equipment has a high degree of integration and has good application value for the grinding production of silicon carbide powder.

[0015] The present invention provides a production device for producing silicon carbide micropowder. It has the following beneficial effects: 1. Before use, the present invention can fix the collection box on the storage table by driving the positioning plate through the electric slide to prevent the collection box from shaking and ensure the stability of the collection process. At the same time, during the raw material feeding stage, by starting the vacuum cleaner to generate negative pressure inside the dust collecting ring, part of the dust raised around the feeding hopper can be sucked into the vacuum cleaner, reducing dust pollution, improving the working environment, and also beneficial to the health of the staff.

[0016] 2. The present invention grinds the raw materials by means of the cooperation between the angle grinding groove, the first convex ball, the double-layer grinding ring, the bottom grinding ring and the second convex ball, and because the distance between the grinding body and the angle grinding groove gradually narrows from top to bottom, the raw materials can gradually reach the particle size requirements under the action of gravity. This design is conducive to fully grinding the raw materials, ensuring the grinding quality and achieving good grinding effect.

[0017] 3. The present invention integrates screening and secondary grinding by arranging a vibrating screening mechanism. Qualified silicon carbide micropowder can pass through the screening net under the action of the vibration motor and enter the collection process, while unqualified micropowder can pass through the inclined screening basket and return to the feeding hopper through the return plate and return auger for secondary grinding. This process realizes the automation of screening and secondary grinding, and effectively ensures the grinding efficiency and qualified rate of silicon carbide micropowder.

[0018] 4. After the collection box is full, the fully loaded collection box can be easily removed by retracting the positioning plate, and can be quickly positioned after being replaced with a new collection box. This design of the equipment ensures better continuity and a high degree of integration of the entire production process, which helps to improve the production efficiency of silicon carbide micropowder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front perspective view of the present invention; Figure 2 It is a rear perspective view of the present invention; Figure 3 A bottom view of the present invention; Figure 4 This is a schematic diagram of the installation position of the vibrating screening mechanism of the present invention; Figure 5 It is a schematic diagram of the internal structure of the grinding cylinder of the present invention; Figure 6 A schematic diagram of the location of the second convex ball of the present invention; Figure 7 It is a schematic diagram of the structure of the dust suppression mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the vibrating screening mechanism of the present invention; Fig. 9 It is a schematic diagram of the installation position of the vibration motor of the present invention.

[0020] Among them, 1. base frame; 2. fixed box; 3. grinding mechanism; 301. grinding cylinder; 302. grinding body; 303. first convex ball; 304. double-layer grinding ring; 305. bottom grinding ring; 306. second convex ball; 4. mounting frame; 5. driving motor; 6. dust suppression mechanism; 601. dust collector; 602. dust collecting ring; 603. connecting pipe; 7. vibration screening mechanism; 701. screening basket; 702. screening net; 703. electric winding wheel; 704. vibration motor; 705. feeding plate; 706. return plate; 8. electric slide; 9. positioning plate; 10. storage table; 11. collection box; 12. feeding auger; 13. return auger; 14. feeding hopper. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Fig. 9 The embodiment of the present invention provides a production device for producing silicon carbide micropowder, comprising: a base frame 1, a fixed box 2 is installed on the upper part of the base frame 1, and a grinding mechanism 3 for grinding silicon carbide micropowder raw materials is arranged in the middle part of the fixed box 2; A mounting frame 4 is mounted on the upper part of the fixed box 2. A driving motor 5 for driving the internal parts of the grinding mechanism 3 is mounted on the top of the mounting frame 4. A dust suppression mechanism 6 for suppressing the dust of the silicon carbide micro powder raw material is also mounted on one side of the mounting frame 4. A vibrating screening mechanism 7, which is installed in a material separation cavity provided at the lower part of the fixed box 2, and is used to screen the ground silicon carbide powder; A feeding auger 12, which is installed at the front of the fixed box 2, is used to convey the ground silicon carbide micro powder raw material; The return auger 13 is installed at the rear of the fixed box 2 and is used to receive the unqualified silicon carbide powder screened by the vibration screening mechanism 7 and send it to the grinding mechanism 3 for secondary grinding; A feeding hopper 14 is arranged on one side of the upper part of the grinding mechanism 3, and its rear part is connected with the discharge port of the return auger 13; Electric slides 8 are installed on both sides of the fixed box 2, and a positioning plate 9 for limiting the displacement of the collection box 11 is installed on one side of the electric slide 8; A storage platform 10 is installed at the front end of the base frame 1, and a collection box 11 for storing silicon carbide powder is slidably connected to the upper part of the storage platform 10, and a receiving interface is provided on the upper part of the storage platform 10, and the discharge port of the feeding auger 12 is at the same position as the receiving interface on the upper part of the collection box 11; For details, please refer to the attached Figure 5 -Attached Figure 6 The grinding mechanism 3 includes a grinding cylinder 301 fixedly installed in the middle of the fixed box 2 and a grinding body 302 fixedly installed at the output end of the driving motor 5. The grinding cylinder 301 is provided with an angle grinding groove inside. The grinding body 302 and the turning part of the angle grinding groove are provided with a plurality of first convex balls 303 at the corresponding positions. A double-layer grinding ring 304 is installed in the middle and upper part of the grinding body 302. A bottom grinding ring 305 is installed at the lower part of the grinding body 302. The turning part of the angle grinding groove is provided with a plurality of second convex balls 306 in an annular manner. The distance between the grinding body 302 and the angle grinding groove gradually decreases from top to bottom. Furthermore, under the cooperation of the angle grinding groove, the first convex ball 303, the double-layer grinding ring 304, the bottom grinding ring 305 and the second convex ball 306, the raw material will be ground into powder. Since the distance between the grinding body 302 and the angle grinding groove is gradually narrowed from top to bottom, the raw material will gradually reach the particle size requirement in the angle grinding groove under the action of gravity, and finally enter the inside of the vibration screening mechanism 7 through the hole at the bottom; For details, please refer to the attached Figure 7 The dust suppression mechanism 6 includes a dust collector 601 fixedly mounted on one side of the mounting frame 4 and a dust collecting ring 602 fixedly mounted on the top of the grinding cylinder 301. The inner wall of the dust collecting ring 602 is provided with a plurality of through holes at equal intervals. The suction end of the dust collector 601 is connected to the interior of the dust collecting ring 602 through a connecting pipe 603. Furthermore, when using the present device, it is necessary to first place the collection box 11 on the upper part of the storage table 10, and then start the electric slides 8 on both sides of the fixed box 2 to drive the positioning plate 9 to fix the collection box 11 to prevent it from shaking, and then start the drive motor 5 to drive the grinding body 302 to operate, and through the external feeding device, put the silicon carbide micropowder raw material to be ground into the feeding hopper 14. In this step, the placement of the raw material will generate a certain amount of dust around the feeding hopper 14. By starting the vacuum cleaner 601, a negative pressure can be generated inside the dust collecting ring 602, and part of the dust raised by the feeding hopper 14 can be sucked into the interior of the vacuum cleaner 601 through the connecting pipe 603, thereby completing a certain dust suppression effect; For details, please refer to the attached Figure 8 -Attached Fig. 9 The vibrating screening mechanism 7 includes a screening basket 701 rotatably installed inside the material distribution chamber and two electric winding wheels 703 respectively installed on both sides of the bottom of the grinding cylinder 301. Screening nets 702 for screening silicon carbide micropowder are arranged on both sides of the screening basket 701.

[0023] Two electric winding wheels 703 are connected to both sides of one end of the screening basket 701 through hanging ropes, and a vibration motor 704 is installed at the bottom of the screening basket 701.

[0024] The vibrating screening mechanism 7 also includes a feeding plate 705 fixedly installed on one side of the distribution bin, which is used to transport the qualified ground silicon carbide micropowder to the feed port of the feeding auger 12. A return plate 706 is installed on the other side of the distribution bin, which is used to transport the unqualified ground silicon carbide micropowder to the feed port of the feeding auger 12 for return processing.

[0025] Furthermore, in actual operation of the present invention, by starting the vibration motor 704, qualified silicon carbide micropowder will pass through the screening net 702 under the action of vibration, fall onto the feed plate 705, and enter the feeding port of the feed auger 12 under the guidance of the feed plate 705, and be transported to the collection box 11 for collection. As for silicon carbide micropowder that does not meet the qualification requirements, by starting the electric winding wheel 703 and releasing the rope, one end of the screening basket 701 is tilted at a certain angle, so that the powder can enter the return plate 706, and enter the feeding port of the return auger 13 under the guidance of the return plate 706, and then be transported into the feed hopper 14 through it for secondary grinding, thereby effectively ensuring the grinding efficiency and qualification rate of the silicon carbide micropowder.

[0026] Specifically, when the interior of the collection box 11 is filled with silicon carbide micropowder, the fully loaded collection box 11 can be removed by retracting the positioning plates 9 on both sides, and then replaced with an empty collection box 11, and then positioned by the positioning plates 9. The equipment has a high degree of integration and has good application value for the grinding production of silicon carbide micropowder.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for producing silicon carbide powder, characterized in that: include: A base frame (1), a fixed box (2) being installed on the upper part of the base frame (1), and a grinding mechanism (3) for grinding silicon carbide micropowder raw material being arranged in the middle part of the fixed box (2); A mounting frame (4) mounted on the upper part of the fixed box (2), a driving motor (5) for driving the internal parts of the grinding mechanism (3) to operate is mounted on the top of the mounting frame (4), and a dust suppression mechanism (6) for suppressing dust of the silicon carbide micropowder raw material is also mounted on one side of the mounting frame (4); A vibrating screening mechanism (7) is installed in a material screening cavity provided at the bottom of the fixed box (2) and is used to screen the ground silicon carbide micropowder; A feeding auger (12), which is installed at the front of the fixed box (2) and is used to convey the ground silicon carbide micro powder raw material; A return auger (13) is installed at the rear of the fixed box (2) and is used to receive the unqualified silicon carbide micropowder screened by the vibrating screening mechanism (7) and send it to the grinding mechanism (3) for secondary grinding; A feeding hopper (14) is arranged on one side of the upper part of the grinding mechanism (3), and its rear part is connected to the discharge port of the return auger (13).

2. A production device for producing silicon carbide micropowder according to claim 1, characterized in that: The grinding mechanism (3) comprises a grinding cylinder (301) fixedly mounted in the middle of a fixed box (2) and a grinding body (302) fixedly mounted at the output end of a driving motor (5); a folded angle grinding groove is arranged inside the grinding cylinder (301); a plurality of first convex balls (303) are arranged at positions corresponding to the turning portion of the folded angle grinding groove and the grinding body (302); a double-layer grinding ring (304) is arranged at the middle and upper part of the grinding body (302); a bottom grinding ring (305) is arranged at the lower part of the grinding body (302); a plurality of second convex balls (306) are arranged in an annular shape at the turning portion of the folded angle grinding groove; and the distance between the grinding body (302) and the folded angle grinding groove gradually decreases from top to bottom.

3. A production device for producing silicon carbide micropowder according to claim 1, characterized in that: The dust suppression mechanism (6) comprises a dust collector (601) fixedly mounted on one side of the mounting frame (4) and a dust collecting ring (602) fixedly mounted on the top of the grinding cylinder (301); a plurality of through holes are arranged at equal intervals on the inner wall of the dust collecting ring (602); and an air suction end of the dust collector (601) is connected to the interior of the dust collecting ring (602) via a connecting pipe (603).

4. A production device for producing silicon carbide micropowder according to claim 1, characterized in that: The vibrating screening mechanism (7) comprises a screening basket (701) rotatably mounted inside a material separation chamber and two electric winding wheels (703) respectively mounted on two sides of the bottom of a grinding cylinder (301), and screening nets (702) for screening silicon carbide micropowder are arranged on both sides of the screening basket (701).

5. A production device for producing silicon carbide micropowder according to claim 4, characterized in that: The two electric winding wheels (703) are respectively connected to both sides of one end of the screening basket (701) through hanging ropes, and a vibration motor (704) is installed at the bottom of the screening basket (701).

6. The production device for producing silicon carbide micropowder according to claim 1, characterized in that: The vibrating screening mechanism (7) further comprises a feeding plate (705) fixedly mounted on one side of the material separation bin, which is used to convey the silicon carbide micropowder that has passed the grinding process to the feeding port of the feeding auger (12); and a return plate (706) is mounted on the other side of the material separation bin, which is used to convey the silicon carbide micropowder that has not passed the grinding process to the feeding port of the feeding auger (12) for return processing.

7. The production device for producing silicon carbide micropowder according to claim 1, characterized in that: Electric slides (8) are installed on both sides of the fixed box (2), and a positioning plate (9) for limiting the displacement of the collection box (11) is installed on one side of the electric slide (8).

8. The production device for producing silicon carbide micropowder according to claim 1, characterized in that: A storage platform (10) is installed at the front end of the base frame (1), and a collection box (11) for storing silicon carbide micropowder is slidably connected to the upper part of the storage platform (10), which is provided with a receiving interface, and the discharge port of the feeding auger (12) and the receiving interface on the upper part of the collection box (11) are located at the same position.

Images