Silicon carbide micro-powder coarse and fine screening device

Abstract

The utility model discloses a silicon carbide micro powder coarse and fine screening device, which relates to the technical field of silicon carbide micro powder coarse and fine screening devices, and comprises a frame, the inner wall of the frame is fixedly connected with a driving motor, and the output shaft of the driving motor is fixedly connected with a transmission rod II; through the arrangement of the moving frame, the screen, the grip, the positioning block, the limiting rod, the access groove, the spring, the connecting piece, the bearing and the rotating rod, the silicon carbide micro-powder coarse and fine screening device has the beneficial effects that the screen is convenient to disassemble and assemble, and the situation that the screen is inconvenient to disassemble and assemble is avoided; through arrangement of a sealing strip, a pushing strip, a discharging hopper, a reciprocating lead screw, a first synchronous wheel, a synchronous belt, a second synchronous wheel, a worm, a second transmission rod, a driving motor, a third transmission rod and a movable frame, the silicon carbide micro powder coarse and fine screening device has the beneficial effects that through reciprocating motion of a bottom plate, silicon carbide micro powder is evenly poured on a screen; and inconvenience of uniformly pouring the silicon carbide micro powder on the screen is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide micropowder coarse and fine screening devices, and specifically relates to a silicon carbide micropowder coarse and fine screening device. Background Technique

[0002] Silicon carbide micropowder is green, has a crystal structure, high hardness, and strong cutting ability. Silicon carbide micropowder is mainly used in the abrasive industry. In the subsequent use of silicon carbide micropowder, there are special requirements for the grading of the micropowder, and strict requirements for the particle size of silicon carbide micropowder. Different usage processes require different particle sizes of silicon carbide. Therefore, after passing through a magnetic separator, silicon carbide micropowder needs to be screened multiple times to avoid the mixing of large and small particles in the micropowder.

[0003] Currently, the existing silicon carbide micropowder coarse and fine screening devices usually involve the cooperation of a stirring mechanism and a driving mechanism. During the process of stirring the silicon carbide micropowder in the box, the screening frame can be automatically vibrated up and down in the box, thereby effectively improving the screening effect of the silicon carbide micropowder. When disassembling and assembling the screen, since the existing device screens the silicon carbide micropowder, the internal screen is often fixed inside the screening device body by threads. When maintaining or cleaning the screen, it is necessary for workers to reach into the screening device body to loosen the screws on the screen, which is rather troublesome and there is a problem of inconvenience in disassembling and assembling the screen. Moreover, during the use process, since most of the existing screening devices directly pour the silicon carbide micropowder onto the screen and then use the driving mechanism to screen the silicon carbide micropowder through the screen, and the silicon carbide micropowder is directly poured onto the screen, resulting in accumulation or aggregation in some areas of the screen, which may cause blockage and hinder the further screening of the silicon carbide micropowder. There is a problem of inconvenience in evenly pouring the silicon carbide micropowder onto the screen. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a silicon carbide micropowder coarse and fine screening device, which solves the problems raised in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: It includes a frame, the inner wall of the frame is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a second transmission rod, one end of the second transmission rod is fixedly connected with a worm, the outer side of the worm is meshed with a second gear, the outer side of the second gear is meshed with a first gear, the inner wall of the first gear is fixedly connected with a first transmission rod, and one end of the first transmission rod is fixedly connected with a pushing bar;

[0008] A sliding block is slidably connected to the inner wall of the frame. A moving frame is fixedly connected to the top of the sliding block. A spring is fixedly connected to the inner wall of the moving frame. One end of the spring is fixedly connected to a connecting piece. A bearing is fixedly connected to the inner wall of the connecting piece. A rotating rod is fixedly connected to the inner wall of the bearing. One end of the rotating rod is fixedly connected to a positioning block;

[0009] One end of the worm is fixedly connected to a third transmission rod. One end of the third transmission rod is fixedly connected to a second synchronous pulley. The second synchronous pulley is connected to a first synchronous pulley through a synchronous belt. A reciprocating lead screw is fixedly connected to one side of the first synchronous pulley. A bottom plate is threadedly connected to the outside of the reciprocating lead screw. A feeding hopper is fixedly connected to the bottom of the bottom plate.

[0010] Optionally, a limiting rod is fixedly connected to the inner wall of the moving frame. A screen is movably connected to the outside of the limiting rod. A handle is fixedly connected to one end of the screen. The screen is movably connected to the outside of the moving frame.

[0011] Optionally, a hole is formed in one side of the positioning block. A limiting rod is movably connected to the inner wall of the hole. An access groove is formed in one end of the screen. The shape of the access groove is the same as that of the positioning block.

[0012] Optionally, a sealing strip is slidably connected to the outside of the bottom plate. The sealing strip is fixedly connected to a frame. The frame is in a shape of a door character.

[0013] Optionally, the sliding block is in a shape of a convex character. The length of the sliding block is equal to the length of the moving frame. The inner bottom wall of the moving frame is an inclined surface.

[0014] Optionally, a groove is formed in the inner side of the frame. The shape of the groove is the same as that of the sliding block. The length of the groove is greater than the length of the sliding block.

[0015] (III) Beneficial effects

[0016] The utility model provides a device for sieving silicon carbide micropowder by fineness, which has the following beneficial effects:

[0017] 1. For the device for sieving silicon carbide micropowder by fineness, through the arrangement of the moving frame, the screen, the handle, the positioning block, the limiting rod, the access groove, the spring, the connecting piece, the bearing and the rotating rod, the device for sieving silicon carbide micropowder by fineness is convenient for disassembling and assembling the screen, avoiding the inconvenience of disassembling and assembling the screen.

[0018] 2. The silicon carbide micropowder coarse and fine screening device is arranged through a sealing strip, a pushing strip, a feeding hopper, a reciprocating lead screw, a first synchronous pulley, a synchronous belt, a second synchronous pulley, a worm, a second transmission rod, a driving motor, a third transmission rod, and a moving frame. A silicon carbide micropowder coarse and fine screening device can make the silicon carbide micropowder evenly poured on the screen through the reciprocating movement of the bottom plate, avoiding the inconvenience of evenly pouring the silicon carbide micropowder on the screen. Brief Description of the Drawings

[0019] Figure 1 It is a front shaft-side structural schematic diagram of the present utility model;

[0020] Figure 2 It is a front-view structural schematic diagram of the present utility model;

[0021] Figure 3 It is a front cross-sectional structural schematic diagram of the present utility model;

[0022] Figure 4 It is a side cross-sectional structural schematic diagram of the present utility model;

[0023] Figure 5 It is a top-view partial cross-sectional structural schematic diagram of the present utility model;

[0024] Figure 6 It is a cross-sectional structural schematic diagram of the rotating rod of the present utility model;

[0025] Figure 7 For the present utility model Figure 2 The enlarged structural schematic diagram at position A;

[0026] Figure 8 For the present utility model Figure 6 The enlarged structural schematic diagram at position B.

[0027] In the figure: 1. Frame; 2. Moving frame; 3. Screen; 4. Handle; 5. Bottom plate; 6. Sealing strip; 7. Pushing strip; 8. Feeding hopper; 9. Reciprocating lead screw; 10. First synchronous pulley; 11. Synchronous belt; 12. Second synchronous pulley; 13. First gear; 14. First transmission rod; 15. Second gear; 16. Worm; 17. Second transmission rod; 18. Driving motor; 19. Third transmission rod; 20. Sliding block; 21. Positioning block; 22. Limiting rod; 23. Access slot; 24. Spring; 25. Connecting piece; 26. Bearing; 27. Rotating rod. Detailed Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Embodiment 1

[0030] See also Figures 1 to 8 The utility model provides a technical solution: a silicon carbide powder coarse and fine screening device, comprising a frame 1, the inner wall of the frame 1 is fixedly connected with a driving motor 18, the output shaft of the driving motor 18 is fixedly connected with a transmission rod 17, one end of the transmission rod 17 is fixedly connected with a worm 16, the outer side of the worm 16 is meshedly connected with a gear 15, the outer side of the gear 15 is meshedly connected with a gear 13, the inner wall of the gear 13 is fixedly connected with a transmission rod 14, and one end of the transmission rod 14 is fixedly connected with a push bar 7;

[0031] The inner wall of the frame 1 is slidably connected with a sliding block 20, the top of the sliding block 20 is fixedly connected with a moving frame 2, the inner wall of the moving frame 2 is fixedly connected with a limiting rod 22, the outer side of the limiting rod 22 is movably connected with a screen 3, one end of the screen 3 is fixedly connected with a handle 4, the outer side of the screen 3 is movably connected with the moving frame 2, the inner wall of the moving frame 2 is fixedly connected with a spring 24, one end of the spring 24 is fixedly connected with a connecting piece 25, the inner wall of the connecting piece 25 is fixedly connected with a bearing 26, the inner wall of the bearing 26 is fixedly connected with a rotating rod 27, and the rotating rod One end of 27 is fixedly connected with a positioning block 21, one side of the positioning block 21 is provided with a hole, the inner wall of the hole is movably connected with a limiting rod 22, one end of the screen 3 is provided with an entry and exit slot 23, the shape of the entry and exit slot 23 is the same as that of the positioning block 21, and a silicon carbide micropowder coarse and fine screening device is provided by moving the frame 2, the screen 3, the handle 4, the positioning block 21, the limiting rod 22, the entry and exit slot 23, the spring 24, the connecting piece 25, the bearing 26, and the rotating rod 27, which is convenient for disassembling and assembling the screen 3, avoiding the inconvenience of disassembling and assembling the screen 3.

[0032] When in use, the positioning block 21 is pulled outward to make the positioning block 21 free from the limit rod 22, and the positioning block 21 rotates the rod 27 through the bearing 26 to move the connecting piece 25 outward, while the spring 24 is in a stretched state, and then the positioning block 21 is rotated to align the positioning block 21 with the inlet and outlet slots 23 on the screen 3, and then the positioning block 21 is released, the spring 24 contracts, and the positioning block 21 enters the inlet and outlet slots 23 on the screen 3, and then the screen 3 is taken out by the handle 4, thereby completing the alignment of the screen 3. During disassembly and installation, the screen 3 is inserted into the movable frame 2, and the positioning block 21 is pulled outward and rotated to align the hole on the positioning block 21 with the limiting rod 22, and then the limiting rod 22 is released, the spring 24 contracts, and the positioning block 21 moves, and the limiting rod 22 enters the hole on the positioning block 21 to limit the positioning block 21 and prevent the positioning block 21 from rotating, and then the spring 24 uses the contraction force to clamp the screen 3 to fix the screen 3.

[0033] Example 2

[0034] See also Figures 1 to 8, the present utility model provides a technical solution: a device for sieving silicon carbide micropowder by fineness, including a frame 1. A driving motor 18 is fixedly connected to the inner wall of the frame 1. A groove is formed inside the frame 1, and the shape of the groove is the same as that of the sliding block 20. The length of the groove is greater than the length of the sliding block 20. The output shaft of the driving motor 18 is fixedly connected to a second transmission rod 17. One end of the second transmission rod 17 is fixedly connected to a worm 16. A second gear 15 is meshed on the outer side of the worm 16. A first gear 13 is meshed on the outer side of the second gear 15. A first transmission rod 14 is fixedly connected to the inner wall of the first gear 13. One end of the first transmission rod 14 is fixedly connected to a pushing strip 7;

[0035] A sliding block 20 is slidably connected to the inner wall of the frame 1. The shape of the sliding block 20 is convex. The length of the sliding block 20 is equal to the length of the moving frame 2. The inner bottom wall of the moving frame 2 is inclined. A moving frame 2 is fixedly connected to the top of the sliding block 20. A spring 24 is fixedly connected to the inner wall of the moving frame 2. One end of the spring 24 is fixedly connected to a connecting piece 25. A bearing 26 is fixedly connected to the inner wall of the connecting piece 25. A rotating rod 27 is fixedly connected to the inner wall of the bearing 26. One end of the rotating rod 27 is fixedly connected to a positioning block 21;

[0036] One end of the worm 16 is fixedly connected to a third transmission rod 19. One end of the third transmission rod 19 is fixedly connected to a second synchronous pulley 12. The second synchronous pulley 12 is drivingly connected to a first synchronous pulley 10 through a synchronous belt 11. A reciprocating lead screw 9 is fixedly connected to one side of the first synchronous pulley 10. A bottom plate 5 is threadedly connected to the outer side of the reciprocating lead screw 9. A sealing strip 6 is slidably connected to the outer side of the bottom plate 5. The sealing strip 6 is fixedly connected to the frame 1. The shape of the frame 1 is U-shaped. A feeding hopper 8 is fixedly connected to the bottom of the bottom plate 5. Through the arrangement of the sealing strip 6, the pushing strip 7, the feeding hopper 8, the reciprocating lead screw 9, the first synchronous pulley 10, the synchronous belt 11, the second synchronous pulley 12, the worm 16, the second transmission rod 17, the driving motor 18, the third transmission rod 19, and the moving frame 2, a device for sieving silicon carbide micropowder by fineness enables the silicon carbide micropowder to be evenly poured onto the sieve mesh 3 through the reciprocating movement of the bottom plate 5, avoiding the inconvenience of evenly pouring the silicon carbide micropowder onto the sieve mesh 3.

[0037] During use, start the drive motor 18. The drive motor 18 drives the worm 16 through the second transmission rod 17. The worm 16 meshes with the second gear 15, and the second gear 15 then meshes with the first gear 13 to rotate the first transmission rod 14. The push bar 7 pushes the moving frame 2. The moving frame 2 is pushed by the push bars 7 at both ends to perform a reciprocating motion. The worm 16 drives the second synchronous pulley 12 through the third transmission rod 19. The second synchronous pulley 12 and the first synchronous pulley 10 are connected by a synchronous belt 11 to rotate the reciprocating lead screw 9. Under the action of the reciprocating lead screw 9, the bottom plate 5 performs a reciprocating motion. Then, pour the silicon carbide micropowder into the top feed port of the frame 1. When the bottom plate 5 performs a reciprocating motion, the silicon carbide micropowder uniformly falls onto the sieve mesh 3, preventing the silicon carbide micropowder from accumulating on the sieve mesh 3. The uniform falling of the silicon carbide micropowder onto the sieve mesh 3 means an increase in the surface area of the silicon carbide micropowder per unit volume. A larger surface area means more silicon carbide micropowder contacts the sieve mesh 3, thereby improving the screening efficiency of the sieve mesh 3 for the silicon carbide micropowder.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for sieving silicon carbide micropowder by fineness, comprising a frame (1), characterized in that: A drive motor (18) is fixedly connected to the inner wall of the frame (1). A second transmission rod (17) is fixedly connected to the output shaft of the drive motor (18). A worm (16) is fixedly connected to one end of the second transmission rod (17). A second gear (15) is meshed and connected to the outer side of the worm (16). A first gear (13) is meshed and connected to the outer side of the second gear (15). A first transmission rod (14) is fixedly connected to the inner wall of the first gear (13). A push bar (7) is fixedly connected to one end of the first transmission rod (14). A sliding block (20) is slidably connected to the inner wall of the frame (1). A moving frame (2) is fixedly connected to the top of the sliding block (20). A spring (24) is fixedly connected to the inner wall of the moving frame (2). A connecting member (25) is fixedly connected to one end of the spring (24). A bearing (26) is fixedly connected to the inner wall of the connecting member (25). A rotating rod (27) is fixedly connected to the inner wall of the bearing (26). A positioning block (21) is fixedly connected to one end of the rotating rod (27). A third transmission rod (19) is fixedly connected to one end of the worm (16). A second synchronous pulley (12) is fixedly connected to one end of the third transmission rod (19). The second synchronous pulley (12) is drivingly connected to a first synchronous pulley (10) through a synchronous belt (11). A reciprocating lead screw (9) is fixedly connected to one side of the first synchronous pulley (10). A bottom plate (5) is threadedly connected to the outer side of the reciprocating lead screw (9). A feeding hopper (8) is fixedly connected to the bottom of the bottom plate (5).

2. The fine and coarse screening device for silicon carbide micropowder according to claim 1, wherein: A limiting rod (22) is fixedly connected to the inner wall of the moving frame (2). A screen (3) is movably connected to the outer side of the limiting rod (22). A handle (4) is fixedly connected to one end of the screen (3). The screen (3) is movably connected to the outer side of the moving frame (2).

3. The silicon carbide micropowder coarse and fine screening device according to claim 2, characterized in that: A hole is formed in one side of the positioning block (21), and a limiting rod (22) is movably connected to the inner wall of the hole. An access groove (23) is formed in one end of the screen (3), and the shape of the access groove (23) is the same as that of the positioning block (21).

4. A silicon carbide micropowder coarse and fine screening device according to claim 1, characterized in that: A sealing strip (6) is slidably connected to the outer side of the bottom plate (5). The sealing strip (6) is fixedly connected to the frame (1), and the frame (1) is in the shape of a door.

5. A silicon carbide micropowder coarse and fine screening device according to claim 1, characterized in that: The sliding block (20) is in the shape of a convex character, and the length of the sliding block (20) is equal to the length of the moving frame (2). The inner bottom wall of the moving frame (2) is inclined.

6. The fine and coarse screening device for silicon carbide micropowder according to claim 1, characterized in that: A groove is formed in the inner side of the frame (1), and the shape of the groove is the same as that of the sliding block (20). The length of the groove is greater than the length of the sliding block (20).

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