Silicon carbide micropowder impurity removal equipment and use method thereof

Abstract

The present invention discloses a silicon carbide micropowder impurity removal device and a method of using the same, which relates to the technical field of impurity removal, including a columnar pickling tank, the inner wall of which is provided with a spiral guide strip, and further comprising: a sliding block, which is slidably matched with the spiral guide strip; a sliding limit structure, which is slidably matched with the side wall of the columnar pickling tank and can only slide along the circumferential direction of the columnar pickling tank, and the sliding limit structure has a strip guide groove arranged along the height direction of the columnar pickling tank, and the sliding block is slidably assembled in the strip guide groove; a driving shaft, which is vertically rotated and assembled in the columnar pickling tank, and the driving shaft is eccentrically arranged with the columnar pickling tank. The driving structure of the present invention is reliable and stable, and can not only drive the pickling container to rotate at a high speed, but also quickly rotate the pickling container forward and reverse, thereby improving the washing, pickling, and draining effects of silicon carbide.

Description

Technical Field

[0001] The invention relates to the technical field of impurity removal, and in particular to a silicon carbide micropowder impurity removal device and a use method thereof. Background Art

[0002] Silicon carbide powder refers to micron-sized silicon carbide powder that is ultra-finely crushed and graded using JZFZ equipment. The acid washing of silicon carbide usually uses sulfuric acid to treat silicon carbide particles. The main purpose is to remove impurities such as metallic iron, iron oxide, magnesium, and aluminum in silicon carbide. This can remove impurities in silicon carbide cleanly and quickly. After the silicon carbide powder is acid washed, it needs to be rinsed with pure water. During the acid washing and rinsing process, the treated silicon carbide powder needs to be drained. Due to the small volume of silicon carbide powder, it is easy to clog the filter, resulting in a low drainage rate, thereby reducing the production efficiency of silicon carbide.

[0003] Chinese patent CN115055436B discloses a pickling and impurity removal device for silicon carbide micropowder production and its implementation method, which includes a pickling tank, the inner wall of which is a cylindrical structure, and a spiral guide groove is provided on the inner wall of the pickling tank; a pickling container, the pickling container is used to hold silicon carbide micropowder, and the pickling container is provided with a filter hole... The other end slides in the spiral guide groove. Although this patent increases the draining rate by changing the position and spread area of ​​silicon carbide micropowder, and can provide centrifugal force to further The draining rate is accelerated and the production efficiency of silicon carbide micropowder is improved, but it still has the following defects: 1. After the pickling container is partially immersed in the liquid in the pickling tank, the liquid resistance will cause a large torque to be generated at the end of the transmission shaft, and the reliability of the transmission structure needs to be improved; 2. The connection between the spiral shaft and the spiral guide groove is unstable, and the spiral shaft is easy to slip out of the spiral guide groove; 3. When the pickling container rotates, the friction force is large, resulting in a large load on the transmission shaft; 4. The overall pickling and draining effect of silicon carbide micropowder needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a silicon carbide micropowder impurity removal device and a method of using the same to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] The present invention provides a silicon carbide powder impurity removal device, comprising a columnar pickling tank, the inner wall of which is provided with a spiral guide strip, and further comprising:

[0007] A sliding block, wherein the sliding block is slidably matched with the spiral guide strip;

[0008] A sliding limit structure, wherein the sliding limit structure is slidably matched with the side wall of the columnar pickling tank and can only slide along the circumferential direction of the columnar pickling tank, and the sliding limit structure has a strip guide groove arranged along the height direction of the columnar pickling tank, and the sliding block is slidably assembled in the strip guide groove;

[0009] A drive shaft is vertically rotatably mounted in the columnar pickling tank, and the drive shaft and the columnar pickling tank are eccentrically arranged, and a sliding sleeve that can only slide along its axial direction is also slidably mounted on the drive shaft;

[0010] A rotary drive structure is arranged between the sliding sleeve and the sliding block, the rotary drive structure comprises a support member fixed on the sliding block and a rotating sleeve, the support member has a cylindrical through hole, the rotating sleeve is rotatably arranged in the cylindrical through hole, the rotary drive structure also comprises a sliding member, one end of the sliding member is fixed on the sliding sleeve, and the other end of the sliding sleeve is slidably matched with the support member, so that the sliding sleeve and the support member can only slide along the radial direction of the columnar pickling tank;

[0011] The pickling container is detachably installed and fixed in the rotating sleeve, and the side wall and bottom of the pickling container are evenly provided with filter holes;

[0012] The transmission structure comprises a gear fixedly mounted on a rotating sleeve and a rack fixedly mounted on a sliding member and meshing with the gear, and the rack is arranged along the radial direction of the columnar pickling tank.

[0013] Furthermore, the sliding limiting structure includes a first strip limiting portion located in the columnar pickling tank, a second strip limiting portion located outside the columnar pickling tank, and a connecting portion connected between the top ends of the first strip limiting portion and the second strip limiting portion, the strip guide groove is arranged on the first strip limiting portion, the first strip limiting portion is tightly attached to the spiral guide strip, the second strip limiting portion is tightly attached to the outer wall of the columnar pickling tank, and the first strip limiting portion on both sides of the strip guide groove is also provided with limiting grooves, and the sliding block is provided with a limiting sliding block slidably arranged in the limiting groove.

[0014] Furthermore, a limiting cylinder is arranged in the columnar pickling tank at the position of the driving shaft, a bracket which cooperates with the driving shaft for rotation is arranged on the top of the columnar pickling tank, and a driving source for driving the driving shaft to rotate forward and reverse is installed on the bracket.

[0015] Furthermore, the pickling container is columnar with an open top, a limiting ring is provided on the top of the pickling container, and the outer diameter of the limiting ring is equal to the outer diameter of the rotating sleeve, the outer wall of the pickling container is evenly provided with convex strips, and the inner wall of the rotating sleeve is evenly provided with grooves adapted to the convex strips.

[0016] Furthermore, a rotating rod is provided at the bottom of the rotating sleeve so as to rotate evenly in a circumferential direction, a swing bar is fixed on the rotating rod, and a side of the swing bar away from the rotating rod abuts against an outer wall of the pickling container, a torsion spring is provided on the rotating rod, and when the torsion spring is in a normal state, an extension line of the swing bar in the width direction passes through the central axis of the pickling container.

[0017] The present invention also provides a method for using the silicon carbide micropowder impurity removal device, comprising the following steps:

[0018] S1: First, fill the pickling container with silicon carbide powder, and then add pickling liquid or pure water into the columnar pickling tank;

[0019] S2: driving the driving shaft to rotate forward to drive the sliding block to move downward along the spiral guide bar through the rotating driving structure, so that the pickling container continuously moves in a circular motion to the bottom of the columnar pickling tank. When it contacts the pickling liquid or pure water in the columnar pickling tank, the driving shaft rotates forward and reversely to make the pickling container move in a circular motion and vertically in the pickling liquid or pure water to complete pickling or rinsing;

[0020] S3: driving the driving shaft to rotate in the opposite direction, and driving the sliding block to move upward along the spiral guide strip through the rotating driving structure, so that the pickling container moves in a circular motion to the top of the columnar pickling tank, and after the pickling container is separated from the pickling liquid or pure water, the pickling container is drained under the revolution and continuous forward and reverse rotation;

[0021] S4. Remove the pickling container from the rotating sleeve and take out the silicon carbide inside it.

[0022] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0023] The driving structure of the present invention is reliable and stable, and can not only drive the pickling container to rotate at a high speed, but also can quickly rotate the pickling container forward and reverse, thereby improving the washing, pickling and draining effects of silicon carbide.

[0024] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure after removing the columnar pickling tank of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the pickling container of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the support member and the rotating sleeve of the present invention from a first viewing angle;

[0030] Figure 5 It is a schematic structural diagram of the support member and the rotating sleeve of the present invention from a second viewing angle;

[0031] Figure 6 The present invention Figure 4 Schematic diagram of the structure viewed from above;

[0032] Figure 7 yes Figure 6 Schematic diagram of the local structure at point A.

[0033] In the figure:

[0034] 1-columnar pickling tank; 11-spiral guide strip; 2-sliding block; 3-sliding limiting structure; 31-strip guide groove; 32-first strip limiting portion; 33-second strip limiting portion; 34-connecting portion; 35-limiting groove; 36-limiting slider; 4-driving shaft; 5-sliding sleeve; 6-rotational driving structure; 61-supporting member; 62-rotating sleeve; 621-groove; 64-sliding member; 7-pickling container; 71-limiting ring; 72-convex strip; 8-transmission structure; 81-gear; 82-rack; 9-rotating rod; 91-swinging bar. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] See also Figure 1-Figure 7The present invention provides a silicon carbide micropowder impurity removal device, comprising a columnar pickling tank 1, the inner wall of which is provided with a spiral guide strip 11, and further comprising: a sliding block 2, the sliding block 2 slidingly cooperates with the spiral guide strip 11; a sliding limit structure 3, the sliding limit structure 3 slidingly cooperates with the side wall of the columnar pickling tank 1 and can only slide along the circumferential direction of the columnar pickling tank 1, the sliding limit structure 3 has a strip guide groove 31 arranged along the height direction of the columnar pickling tank 1, the sliding block 2 is slidably assembled in the strip guide groove 31; a driving shaft 4, which is vertically rotatably assembled in the columnar pickling tank 1, and the driving shaft 4 is eccentrically arranged with the columnar pickling tank 1, and the driving shaft 4 is also slidably assembled with a sliding sleeve 5 that can only slide along its axial direction; a rotary drive structure 6, which is arranged between the sliding sleeve 5 and the sliding block 2, the The rotary drive structure 6 includes a support member 61 and a rotating sleeve 62 fixed on the sliding block 2, the support member 61 has a cylindrical through hole, and the rotating sleeve 62 is rotatably set in the cylindrical through hole, the rotary drive structure 6 also includes a sliding member 64, one end of the sliding member 64 is fixed on the sliding sleeve 5, and the other end of the sliding sleeve 5 is slidably matched with the support member 61, so that the sliding sleeve 5 and the support member 61 can only slide along the radial direction of the columnar pickling tank 1; the pickling container 7, which is detachably installed and fixed in the rotating sleeve 62, and the side wall and bottom wall of the pickling container 7 are evenly provided with filter holes; the transmission structure 8, which includes a gear 81 fixedly assembled on the rotating sleeve 62 and a rack 82 fixedly assembled on the sliding member and meshing with the gear 81, and the rack 82 is arranged along the radial direction of the columnar pickling tank 1.

[0037] When in use, the sliding block 2 is stably and reliably limited on the spiral guide strip 11 by the sliding limiting structure 3. When the driving shaft 4 rotates, the sliding block 2 can be driven to move on the spiral guide strip 11 through the cooperation of the sliding member 64 and the supporting member 61. During the movement of the sliding block 2 on the spiral guide strip 11, the sliding seat can slide in the height direction of the columnar pickling tank 1 while moving in a circular motion. Thus, the pickling container 7 is driven by the supporting member 61 to spiral downward in the columnar pickling tank 1 and gradually contact with water or pickling liquid for flushing or pickling. In this process, since the driving shaft 4 is eccentrically arranged in the pickling tank, the supporting member 61 and the sliding member 64 will continuously reciprocate relative to and opposite to each other during the rotation of the driving shaft 4. In this process, the cooperation of the rack 82 and the gear 81 on the sliding member 64 can make the rotating sleeve 62 continuously reciprocate forward and reverse rotation, thereby driving the pickling container 7 to continuously rotate forward and reverse, so that the silicon carbide in the pickling container 7 is fully contacted with water or pickling liquid for flushing or pickling.

[0038] The driving structure of the present invention is reliable and stable, and can not only drive the pickling container 7 to rotate at a high speed, but also can quickly rotate the pickling container 7 forward and reverse, thereby improving the washing, pickling, and draining effects of silicon carbide.

[0039] In a specific embodiment of the present invention, the sliding limiting structure 3 includes a first strip limiting portion 32 located in the columnar pickling tank 1, a second strip limiting portion 33 located outside the columnar pickling tank 1, and a connecting portion 34 connected between the top ends of the first strip limiting portion 32 and the second strip limiting portion 33. The strip guide groove 31 is arranged on the first strip limiting portion 32, the first strip limiting portion 32 is tightly attached to the spiral guide strip 11, the second strip limiting portion 33 is tightly attached to the outer wall of the columnar pickling tank 1, and the first strip limiting portion 32 on both sides of the strip guide groove 31 is also provided with limiting grooves 35, and the sliding block 2 is provided with a limiting sliding block 36 slidably arranged in the limiting groove 35.

[0040] In a specific embodiment of the present invention, a limiting cylinder is provided in the columnar pickling tank 1 at the position of the driving shaft 4, a bracket which rotates with the driving shaft 4 is provided on the top of the columnar pickling tank 1, and a driving source (not shown) for driving the driving shaft 4 to rotate forward and reverse is installed on the bracket.

[0041] In a specific embodiment of the present invention, the pickling container 7 is columnar, and its top is open. A limiting ring 71 is provided on the top of the pickling container 7, and the outer diameter of the limiting ring 71 is equal to the outer diameter of the rotating sleeve 62. The outer wall of the pickling container 7 is evenly provided with convex strips 72, and the inner wall of the rotating sleeve 62 is evenly provided with grooves 621 adapted to the convex strips 72. Based on the above design, after the pickling container 7 is installed, its limiting ring 71 can be abutted against the top of the rotating sleeve 62, and the convex strips 72 of the pickling container 7 cooperate with the grooves 621 of the rotating sleeve 62 to achieve the connection of the pickling container 7.

[0042] In a specific embodiment of the present invention, a rotating rod 9 is provided at the bottom of the rotating sleeve 62 so as to rotate evenly in a circumferential direction, a swing bar 91 is fixed on the rotating rod 9, and a side of the swing bar 91 away from the rotating rod 9 abuts against an outer wall of the pickling container 7, and a torsion spring is provided on the rotating rod 9. When the torsion spring is in a normal state, an extension line of the swing bar 91 in the width direction passes through the central axis of the pickling container 7.

[0043] Based on the above design, a liquid gap can be formed between adjacent swing bars 91 on the outside of the pickling container 7. When the pickling container 7 is continuously rotating forward and backward, the pickling container 7 can continuously drive the swing bar 91 to swing through the convex bar 72, thereby changing the direction of the liquid gap, so that the pickling liquid or water can more fully pickle or rinse the silicon carbide after passing through the liquid gap.

[0044] The present invention also provides a method for using the silicon carbide micropowder impurity removal device, comprising the following steps:

[0045] S1: First, silicon carbide powder is filled into the pickling container 7, and then pickling liquid or pure water is added into the columnar pickling tank 1;

[0046] S2: driving the driving shaft 4 to rotate forwardly and drive the sliding block 2 to move downwardly along the spiral guide strip 11 through the rotating driving structure 6, so that the pickling container 7 continuously moves in a circular motion to the bottom of the columnar pickling tank 1. When it contacts the pickling liquid or pure water in the columnar pickling tank 1, the driving shaft 4 rotates forward and reversely to make the pickling container 7 move in a circular motion and vertically in the pickling liquid or pure water, thereby completing pickling or rinsing;

[0047] S3: driving the driving shaft 4 to rotate in the opposite direction, and driving the sliding block 2 to move upward along the spiral guide bar 11 through the rotating driving structure 6, so that the pickling container 7 moves in a continuous circular motion to the top of the columnar pickling tank 1, and after the pickling container 7 is separated from the pickling liquid or pure water, the pickling container 7 is drained under the revolution and continuous forward and reverse rotation;

[0048] S4. Remove the pickling container 7 from the rotating sleeve 62 and take out the silicon carbide inside.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A silicon carbide powder impurity removal device, comprising a columnar pickling tank, the inner wall of which is provided with a spiral guide strip, characterized in that: Also includes: A sliding block, the sliding block is slidably matched with the spiral guide strip; A sliding limit structure, wherein the sliding limit structure is slidably matched with the side wall of the columnar pickling tank and can only slide along the circumferential direction of the columnar pickling tank, and the sliding limit structure has a strip guide groove arranged along the height direction of the columnar pickling tank, and the sliding block is slidably assembled in the strip guide groove; A drive shaft is vertically rotatably mounted in the columnar pickling tank, and the drive shaft and the columnar pickling tank are eccentrically arranged, and a sliding sleeve that can only slide along its axial direction is also slidably mounted on the drive shaft; A rotary drive structure is arranged between the sliding sleeve and the sliding block, the rotary drive structure comprises a support member fixed on the sliding block and a rotating sleeve, the support member has a cylindrical through hole, the rotating sleeve is rotatably arranged in the cylindrical through hole, the rotary drive structure also comprises a sliding member, one end of the sliding member is fixed on the sliding sleeve, and the other end of the sliding sleeve is slidably matched with the support member, so that the sliding sleeve and the support member can only slide along the radial direction of the columnar pickling tank; The pickling container is detachably installed and fixed in the rotating sleeve, and the side wall and bottom of the pickling container are evenly provided with filter holes; The transmission structure comprises a gear fixedly mounted on a rotating sleeve and a rack fixedly mounted on a sliding member and meshing with the gear, and the rack is arranged along the radial direction of the columnar pickling tank.

2. The silicon carbide micropowder impurity removal equipment according to claim 1, characterized in that: The sliding limiting structure includes a first strip limiting portion located in the columnar pickling tank, a second strip limiting portion located outside the columnar pickling tank, and a connecting portion connected between the top ends of the first strip limiting portion and the second strip limiting portion. The strip guide groove is arranged on the first strip limiting portion, the first strip limiting portion is tightly attached to the spiral guide strip, the second strip limiting portion is tightly attached to the outer wall of the columnar pickling tank, and the first strip limiting portions on both sides of the strip guide groove are also provided with limiting grooves, and the sliding block is provided with a limiting sliding block slidably arranged in the limiting groove.

3. The silicon carbide micropowder impurity removal equipment according to claim 1, characterized in that: A limiting cylinder is arranged in the columnar pickling tank at the position of the driving shaft, a bracket which is rotatably matched with the driving shaft is arranged on the top of the columnar pickling tank, and a driving source which drives the driving shaft to rotate forward and reverse is installed on the bracket.

4. The silicon carbide micropowder impurity removal equipment according to claim 3, characterized in that: The pickling container is columnar with an open top. A limiting ring is arranged on the top of the pickling container, and the outer diameter of the limiting ring is equal to the outer diameter of the rotating sleeve. The outer wall of the pickling container is evenly provided with convex strips, and the inner wall of the rotating sleeve is evenly provided with grooves adapted to the convex strips.

5. The silicon carbide micropowder impurity removal equipment according to claim 4, characterized in that: A rotating rod is arranged at the bottom of the rotating sleeve so as to rotate evenly in a circumferential direction, a swing bar is fixed on the rotating rod, and a side of the swing bar away from the rotating rod abuts against an outer wall of the pickling container, a torsion spring is arranged on the rotating rod, and when the torsion spring is in a normal state, an extension line of the swing bar in the width direction passes through the central axis of the pickling container.

6. A method for using the silicon carbide micropowder impurity removal device according to claim 1, characterized in that: The following steps are involved: S1: First, fill the pickling container with silicon carbide powder, and then add pickling liquid or pure water into the columnar pickling tank; S2: driving the driving shaft to rotate forward to drive the sliding block to move downward along the spiral guide bar through the rotating driving structure, so that the pickling container continuously moves in a circular motion to the bottom of the columnar pickling tank. When it contacts the pickling liquid or pure water in the columnar pickling tank, the driving shaft rotates forward and reversely to make the pickling container move in a circular motion and vertically in the pickling liquid or pure water to complete pickling or rinsing; S3: driving the driving shaft to rotate in the opposite direction, and driving the sliding block to move upward along the spiral guide strip through the rotating driving structure, so that the pickling container moves in a circular motion to the top of the columnar pickling tank, and after the pickling container is separated from the pickling liquid or pure water, the pickling container is drained under the revolution and continuous forward and reverse rotation; S4. Remove the pickling container from the rotating sleeve and take out the silicon carbide inside it.

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