Multi-stage screening device for silicon carbide furnace core graphite powder production

Abstract

The utility model discloses a multistage screening device for producing graphite powder of a silicon carbide furnace core, which belongs to the technical field of graphite powder screening and comprises a screening box, two fixing plates are mounted on the vertical inner wall of the screening box through bolts, two guide columns are fixedly connected to the tops of the two fixing plates respectively, and the guide columns are fixedly connected with the screening box through bolts. First springs are arranged on the peripheries of the two guide columns, one end of each first spring is connected with a sliding ring, two first fixing strips are installed on the periphery of the sliding ring, a hollow column is installed between the two first fixing strips, a second spring is arranged in the hollow column, and one end of the second spring is connected with a connecting column; and a connecting plate is installed at the end, away from the second spring, of the connecting column, a vibration column is connected to the side face of the connecting plate, and the device can make materials dispersed more evenly, reduce the risk of blocking the screen holes and reduce the hidden danger of resonance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to graphite powder screening technical field especially, it is a multi -stage screening device for silicon carbide core graphite powder production. BACKGROUND

[0002] In the production process of silicon carbide core, the quality and particle size distribution of graphite powder have a crucial influence on the performance of the core. Usually, graphite powder will mix with particles of different particle sizes and possible impurities after production, and needs to be screened to obtain graphite powder with particle size range meeting the process requirements for subsequent core making. The existing device can meet the basic screening requirements, but the vibration direction of the screening disc is single during screening, which can cause uneven material dispersion, increase the risk of clogging the screen hole and increase the resonance risk.

[0003] After searching, the Chinese patent file (authorized announcement number CN211100041U) discloses a graphite powder screening device with multi-stage screening function, which comprises a base, a vibration isolator is fixedly connected to the bottom end of the base, a gas cylinder is fixedly connected to the top end of the base, springs are wound around the outer surface of the gas cylinder, an installation disc is fixedly connected to the top end of the gas cylinder, a vibration motor is fixedly connected to the middle of the bottom end of the installation disc, a positioning ring is welded to the edge of the top end of the installation disc, a sealing ring is bonded to the top end of the positioning ring, a screen box is placed on the top end of the positioning ring, a support block is welded to the inner bottom end of the screen box, an upper screen plate is placed on the top end of the support block, an adjusting disc is rotatably connected to the middle of the top end of the upper screen plate, a lower screen plate is fixedly connected to the bottom end of the adjusting disc. The upper screen disc, the lower screen disc and the adjusting disc provided by the utility model can quickly adjust the size of the screened graphite particles without complicated operation, and improve the work efficiency. The device can meet the basic screening requirements, but the vibration direction of the screening disc is single during screening, which can cause uneven material dispersion, increase the risk of clogging the screen hole and increase the resonance risk. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a multi-stage screening device for silicon carbide core graphite powder production to solve the problems in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A multi -stage screening device is used for silicon carbide core graphite powder production, which comprises a screening box, two fixed plates are arranged on the vertical inner wall of the screening box through bolts, two guide columns are fixedly connected to the top of the two fixed plates, first springs are arranged on the outer periphery of the two guide columns, a sliding ring is connected to one end of the first spring, two first fixed strips are arranged on the outer periphery of the sliding ring, a hollow column is arranged between the two first fixed strips, a second spring is arranged in the hollow column, a connecting column is connected to one end of the second spring, a connecting plate is arranged on the end of the connecting column away from the second spring, and a vibrating column is connected to the side of the connecting plate.

[0006] Preferably, a motor is arranged on the side of the screening box, and a driving gear plate is connected to the output shaft of the motor through a shaft coupling.

[0007] Preferably, a driven gear plate is connected to the outer periphery of the driving gear plate, rotating shafts are arranged on the sides of the driving gear plate and the driven gear plate, and a first cam and a second cam are arranged on one end of the two rotating shafts respectively.

[0008] Preferably, a first screening plate and a second screening plate used for screening silicon carbide core graphite powder production are arranged on the other side of the connecting plate respectively, and L-shaped blocks are arranged on the bottoms of the first screening plate and the second screening plate.

[0009] Preferably, a dust inlet is arranged on the vertical inner wall of the screening box, a fan is arranged in the dust inlet, and a second fixed strip is arranged on the side of the screening box.

[0010] Preferably, a filter frame is slidably arranged in the second fixed strip, a filter bag is arranged in the filter frame, and a collecting box is arranged on the inner bottom wall of the screening box.

[0011] Preferably, a feeding port for the entry of silicon carbide core graphite powder is arranged on the top of the screening box, and a box door is arranged on the side of the screening box.

[0012] Compared with the prior art, the utility model has the following technical effects and advantages:

[0013] The multi-stage screening device for producing silicon carbide furnace core graphite powder, thanks to the structure of the cam and the vibration column, the driving toothed disc drives the driven toothed disc to rotate, the driving toothed disc and the driven toothed disc drive the first cam and the second cam to rotate through the rotating shaft respectively, the protruding directions of the first cam and the second cam are the same direction, and the first cam and the second cam move with the surface of the vibration column in turn, the vibration column drives the connecting plate to move horizontally and reciprocally and vertically and reciprocally, and the connecting plate drives the first screening plate and the second screening plate to move horizontally and reciprocally and vertically and reciprocally, compared with the single vibration direction of the traditional screening disc, the structure can make the material dispersion more uniform, reduce the risk of clogging the screen hole, and reduce the resonance hazard.

[0014] The multi-stage screening device for producing silicon carbide furnace core graphite powder, thanks to the structure of the filter bag, the fan is opened, and the dust generated is sucked and filtered into the filter bag through the dust inlet, after a period of time, the filter frame can be taken out from the second fixed strip, and the filter bag is taken down for collection and cleaning, the structure can recycle the fine powder of the silicon carbide furnace core graphite powder, prevent dust leakage, protect the working environment, and ensure the health of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is a structural schematic view of the present application;

[0017] Figure 2 It is a sectional view of the present application;

[0018] Figure 3 It is a schematic view of the internal structure of the present application;

[0019] Figure 4 It is a structural schematic view of the filter frame of the present application;

[0020] Figure 5 It is a structural schematic view of the present application Figure 2 It is an enlarged view of A in the present application;

[0021] Figure 6 It is an enlarged view of B in the present application. Figure 3

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] ​In the diagram: 1. Screening box; 101. Box door; 102. Feed inlet; 103. Guide column; 104. First spring; 105. Sliding ring; 106. Fixing plate; 2. Primary screening plate; 201. First fixing bar; 202. Hollow column; 203. Second spring; 204. Connecting column; 205. Connecting plate; 3. Secondary screening plate; 4. Motor; 401. Driven gear plate; 402. Driven gear plate; 403. Rotating shaft; 404. First cam; 405. Second cam; 406. Vibrating column; 5. Filter bag; 501. Filter frame; 502. Second fixing bar; 503. Fan; 504. Dust inlet; 6. Collection box; 7. L-shaped block. Detailed Implementation

[0024] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0025] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0026] like Figures 1 to 6 The multi-stage screening device for silicon carbide furnace core graphite powder production shown includes a screening box 1. Two fixing plates 106 are bolted to the vertical inner wall of the screening box 1. Two guide columns 103 are fixedly connected to the top of each of the two fixing plates 106. A first spring 104 is provided on the outer periphery of each of the two guide columns 103. A sliding ring 105 is connected to one end of the first spring 104. Two first fixing strips 201 are installed on the outer periphery of the sliding ring 105. A hollow column 202 is installed between the two first fixing strips 201. A second spring 203 is provided inside the hollow column 202. A connecting column 204 is connected to one end of the second spring 203. A connecting plate 205 is installed on the end of the connecting column 204 away from the second spring 203. A vibration column 406 is connected to the side of the connecting plate 205. The first spring 104 can assist the sliding ring 105 to perform vertical reciprocating motion, and the second spring 203 can assist the connecting plate 205 to perform horizontal reciprocating motion.

[0027] The side of the screening box 1 is provided with a motor 4, the output shaft of the motor 4 is connected with a driving gear plate 401 through a shaft coupling, the shaft coupling is a mechanical part for connecting two shafts (driving shaft and driven shaft) to rotate together to transmit torque, the outer periphery of the driving gear plate 401 is engaged with a driven gear plate 402, the side of the driving gear plate 401 and the driven gear plate 402 is provided with a rotating shaft 403, the rotating shaft 403 connected with the driven gear plate 402 is slidingly connected with the inside of the screening box 1, and plays a supporting role, one end of the two rotating shafts 403 is respectively provided with a first cam 404 and a second cam 405, the first cam 404 and the second cam 405 rotate with the vibration column 406 in turn, the two motors 4 are started, the output shaft of the motor 4 drives the driving gear plate 401 to rotate, the driving gear plate 401 drives the driven gear plate 402 to rotate, the driving gear plate 401 and the driven gear plate 402 drive the first cam 404 and the second cam 405 to rotate through the rotating shaft 403, the protruding directions of the first cam 404 and the second cam 405 are the same direction, and the first cam 404 and the second cam 405 move in turn with the surface of the vibration column 406, the vibration column 406 drives the connecting plate 205 to move horizontally and vertically.

[0028] The other side of the connecting plate 205 is connected with a first screening plate 2 and a second screening plate 3 for screening silicon carbide furnace core graphite powder, the connecting plate 205 drives the first screening plate 2 and the second screening plate 3 to move horizontally and vertically, the first screening plate 2 screens the silicon carbide furnace core graphite powder for the first time, and the second screening plate 3 screens the silicon carbide furnace core graphite powder for the second time, the screening holes of the first screening plate 2 are slightly larger than those of the second screening plate 3, and the finer silicon carbide furnace core graphite powder passes through the first screening plate 2 and falls into the second screening plate 3, the bottom of the first screening plate 2 and the second screening plate 3 is provided with an L-shaped block 7, the partition plate can be inserted into the L-shaped block 7, the bottom of the first screening plate 2 and the second screening plate 3 can be sealed, and then the first screening plate 2 and the second screening plate 3 are taken out to collect the silicon carbide furnace core graphite powder.

[0029] The vertical inner wall of the screening box 1 is provided with a dust inlet 504, a fan 503 is installed inside the dust inlet 504, a second fixed strip 502 is installed on the side of the screening box 1, a filter frame 501 is slidably installed inside the second fixed strip 502, a filter bag 5 is arranged inside the filter frame 501, the fan 503 is started, and the generated dust enters the filter bag 5 through the dust inlet 504 for adsorption and filtration. After a period of time, the filter frame 501 can be taken out from the second fixed strip 502, and the filter bag 5 is taken down for collection and cleaning. The inner bottom wall of the screening box 1 is provided with a collection box 6, and the finer silicon carbide furnace core graphite powder falls into the collection box 6 through the secondary screening plate 3. The top of the screening box 1 is provided with a feeding port 102 for the silicon carbide furnace core graphite powder to enter. The silicon carbide furnace core graphite powder is added from the feeding port 102 to the primary screening plate 2 in the screening box 1. The side of the screening box 1 is provided with a box door 101.

[0030] Working principle

[0031] The multi-stage screening device for producing silicon carbide furnace core graphite powder is used. First, the silicon carbide furnace core graphite powder is added from the feeding port 102 to the primary screening plate 2 in the screening box 1. Two motors 4 are started. The output shaft of the motor 4 drives the driving gear plate 401 to rotate. The driving gear plate 401 drives the driven gear plate 402 to rotate. The driving gear plate 401 and the driven gear plate 402 drive the first cam 404 and the second cam 405 to rotate through the rotating shaft 403, respectively. The protruding directions of the first cam 404 and the second cam 405 are the same direction. The first cam 404 and the second cam 405 move on the surface of the vibration column 406 in turn. The vibration column 406 drives the connecting plate 205 to move horizontally and vertically. The connecting plate 205 drives the primary screening plate 2 and the secondary screening plate 3 to move horizontally and vertically. The silicon carbide furnace core graphite powder in the primary screening plate 2 is screened for the first time. The silicon carbide furnace core graphite powder is screened for the second time by the secondary screening plate 3. The screening holes of the primary screening plate 2 are slightly larger than those of the secondary screening plate 3. The finer silicon carbide furnace core graphite powder passes through the primary screening plate 2 and falls into the secondary screening plate 3. The finer silicon carbide furnace core graphite powder passes through the secondary screening plate 3 and falls into the collection box 6. The fan 503 is started. The generated dust enters the filter bag 5 through the dust inlet 504 for adsorption and filtration. After a period of time, the filter frame 501 can be taken out from the second fixed strip 502, and the filter bag 5 is taken down for collection and cleaning. When it is necessary to take out the silicon carbide furnace core graphite powder after grading screening, the partition plate can be inserted into the L-shaped block 7. The bottom of the primary screening plate 2 and the secondary screening plate 3 can be sealed, and then the primary screening plate 2 and the secondary screening plate 3 can be taken out to collect the silicon carbide furnace core graphite powder.

[0032] It is to be understood that the terminology used herein such as first and second, merely for the purpose of differentiation, and is not necessarily intended to convey any actual relationship between, or sequence of, the entities or operations.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for the production of silicon carbide core graphite powder, comprising a screening box (1), characterized in that: The vertical inner wall of the screening box (1) is provided with two fixed plates (106) installed through bolts, the top of each of the two fixed plates (106) is fixedly connected with two guide columns (103), the outer periphery of each of the two guide columns (103) is provided with a first spring (104), one end of the first spring (104) is connected with a sliding ring (105), the outer periphery of the sliding ring (105) is installed with two first fixed strips (201), a hollow column (202) is installed between the two first fixed strips (201), the hollow column (202) is internally provided with a second spring (203), one end of the second spring (203) is connected with a connecting column (204), the end of the connecting column (204) away from the second spring (203) is installed with a connecting plate (205), the side of the connecting plate (205) is connected with a vibration column (406).

2. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 1, characterized in that: The side of the screening box (1) is installed with a motor (4), the output shaft of the motor (4) is connected with a driving gear plate (401) through a shaft coupling.

3. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 2, characterized in that: The outer periphery of the driving gear plate (401) is meshingly connected with a driven gear plate (402), the side of the driving gear plate (401) and the driven gear plate (402) is installed with a rotating shaft (403), one end of each of the two rotating shafts (403) is installed with a first cam (404) and a second cam (405) respectively.

4. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 1, characterized in that: The other side of the connecting plate (205) is connected with a first screening plate (2) and a second screening plate (3) for screening of silicon carbide furnace core graphite powder production respectively, the bottom of each of the first screening plate (2) and the second screening plate (3) is installed with an L-shaped block (7).

5. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 1, characterized in that: The vertical inner wall of the screening box (1) is provided with a dust inlet (504), the inside of the dust inlet (504) is installed with a fan (503), the side of the screening box (1) is installed with a second fixed strip (502).

6. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 5, characterized in that: The second fixed strip (502) is internally and slidably installed with a filter frame (501), the inside of the filter frame (501) is provided with a filter bag (5), the inner bottom wall of the screening box (1) is provided with a collection box (6).

7. The multi-stage screening device for producing silicon carbide core graphite powder according to claim 5, characterized in that: The top of the screening box (1) is installed with a feeding port (102) for silicon carbide furnace core graphite powder, the side of the screening box (1) is installed with a box door (101).

Images