Silicon carbide micro-powder coarse and fine screening device
Multi-stage screening of silicon carbide fine powder through wind-power screening device solves the problems of low screening efficiency and easy structure damage in the prior art, and achieves efficient screening and extended equipment life.
Patent Information
- Application Number
- CN202422215770.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing problems of low multi-stage screening efficiency of silicon carbide micropowder and easy to damage the vibration structure.
A wind-powered screening device is used to perform multi-stage screening onto the silicon carbide fine powder by wind power, combining a coarse screening plate and a fine screening plate to prevent damage to the screening structure.
It improves multi-stage screening efficiency, extends the service life of the equipment, and avoids damage to the vibration structure.
Smart Images
Figure CN223171338U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screening, in particular to a device for coarse and fine screening of silicon carbide micropowder. Background Art
[0002] Silicon carbide micropowder, abbreviated as SiC micropowder, is a kind of fine particle powder made by finely processing silicon carbide materials. Silicon carbide itself is an inorganic non-metallic material, which has the characteristics of high hardness, good wear resistance, stable chemical properties, excellent heat conduction performance, etc. Silicon carbide micropowder makes use of these excellent properties and is widely used in many industrial fields.
[0003] During the processing of silicon carbide micropowder, it needs to be screened. At present, vibration is mainly used for screening. In multi-stage screening, the screening efficiency is relatively low, and the vibration structure is prone to damage under long-term mechanical vibration, thus affecting the screening work of silicon carbide micropowder. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a device for coarse and fine screening of silicon carbide micropowder, which has the advantages of high efficiency of multi-stage screening, uses air screening to prevent damage to the screening structure, and improves its service life, and solves the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: A device for coarse and fine screening of silicon carbide micropowder, including a screening box and a blowing box. A first partition board and a second partition board are installed in the screening box. The first partition board and the second partition board divide the inside of the screening box into a material chamber, a coarse powder chamber and a fine powder chamber. Openings are arranged at the side ends of the first partition board and the second partition board. A coarse screening board and a fine screening board are respectively installed in the openings of the first partition board and the second partition board. A first rotating shaft is rotatably installed in the material chamber, and a first throwing board distributed in an array is installed on the first rotating shaft. A second rotating shaft is rotatably installed in the coarse powder chamber, and a second throwing board distributed in an array is installed on the second rotating shaft. An air outlet box is installed on the inner wall of the material chamber, and air outlet openings distributed in an array are arranged at the side end of the air outlet box. The blowing box is installed at the side end of the screening box and is communicated with the air outlet box.
[0006] When using a device for sieving coarse and fine silicon carbide micropowder of the present utility model, the silicon carbide micropowder is added into the sieving box from the feed hopper. During the process of the silicon carbide micropowder falling in the sieving box, the third driving device works to make the fan blades rotate at a high speed. When the fan blades rotate at a high speed, blowing can be carried out. The wind enters the air outlet box and is discharged from the air outlet. The wind will blow towards the silicon carbide micropowder. The silicon carbide micropowder is blown towards the coarse sieving plate by the wind. The coarse powder and fine powder will pass through the coarse sieving plate. The silicon carbide micropowder with a larger particle size will directly fall to the bottom of the material chamber. The coarse powder and fine powder will continue to be blown towards the fine sieving plate. The fine silicon carbide powder will pass through the sieving plate and be located in the fine powder chamber, and the fine powder is discharged from the third discharge pipe. The coarse powder will fall to the bottom of the coarse powder chamber. During the sieving process, the first driving device and the second driving device work to make the first rotating shaft and the second rotating shaft rotate. The silicon carbide powder at the bottom of the material chamber can be thrown by the first throwing plate, so that the silicon carbide powder at the bottom of the material chamber can be fully sieved. The coarse powder at the bottom of the coarse powder chamber can be thrown by the second throwing plate, so that the silicon carbide powder at the bottom of the coarse powder chamber can be fully sieved. After the sieving is completed, the pull valve plates of the first discharge pipe and the second discharge pipe are opened, and the silicon carbide powder in the material chamber and the coarse powder chamber can be discharged.
[0007] Preferably, support legs are installed at the lower end of the sieving box. There are four support legs in total, and the four support legs are arranged in an array with respect to the sieving box.
[0008] Preferably, a first discharge pipe, a second discharge pipe and a third discharge pipe are installed at the lower end of the sieving box. The first discharge pipe is communicated with the material chamber, the second discharge pipe is communicated with the coarse powder chamber, and the third discharge pipe is communicated with the fine powder chamber.
[0009] Preferably, installation openings are provided at the front ends of the first discharge pipe and the second discharge pipe. Positioning grooves are provided on the inner walls of the first discharge pipe and the second discharge pipe. A pull valve plate is inserted into the positioning groove from the installation opening. The setting of the pull valve plate can close the first discharge pipe and the second discharge pipe.
[0010] Preferably, a first driving device is installed at the front end of the sieving box. The main shaft of the first driving device is connected to the axis center of the first rotating shaft. The first driving device works to make the first rotating shaft rotate.
[0011] Preferably, a second driving device is installed at the front end of the sieving box. The main shaft of the second driving device is connected to the axis center of the second rotating shaft. The second driving device works to make the second rotating shaft rotate.
[0012] Preferably, a feed pipe is installed at the upper end of the sieving box. The feed pipe is communicated with the material chamber, and a feed hopper is installed at the upper end of the feed pipe. Materials can be added into the sieving box through the feed hopper and the feed pipe.
[0013] Preferably, the front end of the air blowing box is provided with air inlets distributed in an array, and a third driving device is installed in the air blowing box. The end of the main shaft of the third driving device is installed with a fan blade. When the fan blade rotates at a high speed, external air enters the air blowing box from the air inlets.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: when screening silicon carbide micropowder with different particle sizes, the silicon carbide micropowder naturally falls, and is screened by means of wind power in cooperation with a coarse screening plate and a fine screening plate, so as to perform multi-stage screening. The material does not need to pass through multiple vibrating sieve plates, which can effectively improve the efficiency of multi-stage screening. Moreover, wind screening is adopted to prevent damage to the screening structure and improve the service life of the equipment. Description of the Drawings
[0015] Figure 1 is the front view structural schematic diagram of the present utility model;
[0016] Figure 2 is the bottom view structural schematic diagram of the present utility model;
[0017] Figure 3 is the sectional view structural schematic diagram of the air blowing box of the present utility model;
[0018] Figure 4 is the sectional view structural schematic diagram of the present utility model;
[0019] Figure 5 is the structural schematic diagram of the blanking pipe of the present utility model.
[0020] The reference numerals and names in the drawings are as follows:
[0021] 101, screening box; 102, support leg; 103, feed pipe; 104, feed hopper; 105, first partition board; 106, second partition board; 107, coarse screening plate; 108, fine screening plate; 109, first blanking pipe; 110, second blanking pipe; 111, third blanking pipe; 112, positioning groove; 113, pull-out valve plate; 201, first rotating shaft; 202, first throwing plate; 203, first driving device; 204, second rotating shaft; 205, second throwing plate; 206, second driving device; 301, air blowing box; 302, air inlet; 303, third driving device; 304, fan blade; 305, air outlet box; 306, air outlet. Detailed Embodiments
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0023] Embodiment
[0024] Please refer to Figures 1 to 5 , an embodiment provided by the present invention: a device for sieving coarse and fine silicon carbide micropowder, comprising:
[0025] A sieving box 101 and a blowing box 301. A first partition 105 and a second partition 106 are installed in the sieving box 101. The first partition 105 and the second partition 106 divide the interior of the sieving box 101 into a material chamber, a coarse powder chamber and a fine powder chamber. Openings are provided at the side ends of the first partition 105 and the second partition 106. A coarse sieving plate 107 and a fine sieving plate 108 are respectively installed in the openings of the first partition 105 and the second partition 106. A first rotating shaft 201 is rotatably installed in the material chamber, and a first throwing plate 202 distributed in an array is installed on the first rotating shaft 201. A second rotating shaft 204 is rotatably installed in the coarse powder chamber, and a second throwing plate 205 distributed in an array is installed on the second rotating shaft 204. An air outlet box 305 is installed on the inner wall of the material chamber, and air outlet openings 306 distributed in an array are provided at the side end of the air outlet box 305. The blowing box 301 is installed at the side end of the sieving box 101, and the blowing box 301 is communicated with the air outlet box 305.
[0026] In this embodiment, silicon carbide micropowder is added from the feed hopper 104 into the screening box 101. During the process of the silicon carbide micropowder falling in the screening box 101, the fan blade 304 rotates at a high speed by the operation of the third driving device 303. When the fan blade 304 rotates at a high speed, it can blow air. The air enters the air outlet box 305 and is discharged from the air outlet 306. The air will blow towards the silicon carbide micropowder, and the silicon carbide micropowder is blown towards the coarse screening plate 107 by the wind force. The coarse powder and fine powder will pass through the coarse screening plate 107, and the silicon carbide micropowder with a larger particle size will directly fall to the bottom of the material chamber. The coarse powder and fine powder will continue to be blown towards the fine screening plate 108. The silicon carbide fine powder will pass through the screening plate 108 and be located in the fine powder chamber, and the fine powder is discharged from the third discharge pipe 111. The coarse powder will fall to the bottom of the coarse powder chamber. During the screening process, the first rotating shaft 201 and the second rotating shaft 204 can be rotated by the operation of the first driving device 203 and the second driving device 206. The silicon carbide powder at the bottom of the material chamber can be thrown by the first throwing plate 202, so that the silicon carbide powder at the bottom of the material chamber can be fully screened. The coarse powder at the bottom of the coarse powder chamber can be thrown by the second throwing plate 205, so that the silicon carbide powder at the bottom of the coarse powder chamber can be fully screened. After the screening is completed, the pull valve plates 113 of the first discharge pipe 109 and the second discharge pipe 110 can be opened to discharge the silicon carbide powder in the material chamber and the coarse powder chamber.
[0027] Further, support legs 102 are installed at the lower end of the screening box 101. There are four support legs 102 in total, and the four support legs 102 are arranged in an array with respect to the screening box 101.
[0028] Further, a first discharge pipe 109, a second discharge pipe 110 and a third discharge pipe 111 are installed at the lower end of the screening box 101. The first discharge pipe 109 is communicated with the material chamber, the second discharge pipe 110 is communicated with the coarse powder chamber, and the third discharge pipe 111 is communicated with the fine powder chamber.
[0029] Further, installation openings are provided at the front ends of the first discharge pipe 109 and the second discharge pipe 110, and positioning grooves 112 are provided on the inner walls of the first discharge pipe 109 and the second discharge pipe 110. Thus, the pull valve plate 113 is inserted into the positioning groove 112 from the installation opening.
[0030] Further, a first driving device 203 is installed at the front end of the screening box 101, and the main shaft of the first driving device 203 is connected to the axis of the first rotating shaft 201.
[0031] Further, a second driving device 206 is installed at the front end of the screening box 101, and the main shaft of the second driving device 206 is connected to the axis of the second rotating shaft 204.
[0032] Further, a feed pipe 103 is installed at the upper end of the screening box 101. The feed pipe 103 communicates with the material chamber, and a feed hopper 104 is installed at the upper end of the feed pipe 103.
[0033] Further, a plurality of air inlets 302 are formed at the front end of the air blowing box 301 in an array distribution. A third driving device 303 is installed in the air blowing box 301, and a fan blade 304 is installed at the end of the main shaft of the third driving device 303.
[0034] The driving device in the present utility model is a well-known device, and its working principle and circuit connection are well-known to technicians in the field, and both belong to conventional means or common knowledge. The present utility model only utilizes its functions and does not improve its structure, so it will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.
[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A device for sieving silicon carbide micropowder by fineness, comprising a sieving box (101) and a blowing box (301), characterized in that: A first partition plate (105) and a second partition plate (106) are installed inside the screening box (101). The first partition plate (105) and the second partition plate (106) divide the inside of the screening box (101) into a material chamber, a coarse powder chamber, and a fine powder chamber. Openings are provided at the side ends of the first partition plate (105) and the second partition plate (106). A coarse screening plate (107) and a fine screening plate (108) are respectively installed in the openings of the first partition plate (105) and the second partition plate (106). A first rotating shaft (201) is rotatably installed in the material chamber, and a first throwing plate (202) distributed in an array is installed on the first rotating shaft (201). A second rotating shaft (204) is rotatably installed in the coarse powder chamber, and a second throwing plate (205) distributed in an array is installed on the second rotating shaft (204). An air outlet box (305) is installed on the inner wall of the material chamber, and air outlet openings (306) distributed in an array are provided at the side end of the air outlet box (305). The blowing box (301) is installed at the side end of the screening box (101), and the blowing box (301) is communicated with the air outlet box (305).
2. The silicon carbide micropowder coarse and fine screening device according to claim 1, wherein: Support legs (102) are installed at the lower end of the screening box (101). There are four support legs (102) in total, and the four support legs (102) are distributed in an array with respect to the screening box (101).
3. The fine and coarse screening device for silicon carbide micropowder according to claim 1, characterized in that: A first discharge pipe (109), a second discharge pipe (110), and a third discharge pipe (111) are installed at the lower end of the screening box (101). The first discharge pipe (109) is communicated with the material chamber, the second discharge pipe (110) is communicated with the coarse powder chamber, and the third discharge pipe (111) is communicated with the fine powder chamber.
4. The fine and coarse screening device for silicon carbide micropowder according to claim 3, wherein: Installation openings are provided at the front ends of the first discharge pipe (109) and the second discharge pipe (110). Positioning grooves (112) are provided on the inner walls of the first discharge pipe (109) and the second discharge pipe (110). A pull valve plate (113) is inserted into the positioning grooves (112) from the installation openings.
5. The fine and coarse screening device for silicon carbide micropowder according to claim 1, wherein: A first driving device (203) is installed at the front end of the screening box (101). The main shaft of the first driving device (203) is connected to the axis of the first rotating shaft (201).
6. The fine and coarse screening device for silicon carbide micropowder according to claim 1, characterized in that: A second driving device (206) is installed at the front end of the screening box (101). The main shaft of the second driving device (206) is connected to the axis of the second rotating shaft (204).
7. A silicon carbide micropowder coarse and fine screening device according to claim 1, characterized in that: A feed pipe (103) is installed at the upper end of the screening box (101). The feed pipe (103) is communicated with the material chamber, and a feed hopper (104) is installed at the upper end of the feed pipe (103).
8. A silicon carbide micropowder coarse and fine screening device according to claim 1, characterized in that: Air inlet openings (302) distributed in an array are provided at the front end of the blowing box (301). A third driving device (303) is installed inside the blowing box (301), and a fan blade (304) is installed at the end of the main shaft of the third driving device (303).