High-efficiency silica powder grading and collecting system

Abstract

The utility model discloses a high-efficiency silica powder grading and collecting system which comprises a collecting box, the upper end of the collecting box is connected with an air inlet pipe, a filter screen is arranged in the collecting box through an elastic lifting support, the elastic lifting support is provided with a cam excitation mechanism, and the side wall of the collecting box is provided with a first discharge port and a second discharge port. A filter screen is arranged in the collecting box through an elastic lifting support, a filter screen cleaning mechanism is arranged on the upper side of the filter screen and comprises a cleaning support arranged on the filter screen, a transverse moving sliding block is arranged in the cleaning support through a lead screw, and a cleaning brush is arranged on one side of the transverse moving sliding block through a cleaning plate. And a cam excitation mechanism is arranged on the elastic lifting support, so that the filter screen is longitudinally and elastically mounted at the top in the collecting box through the elastic lifting support and used for screening the silica powder, the filter screen is driven by the cam excitation mechanism to be adjusted in a lifting vibration mode, the filter hole blocking probability can be reduced, and the screening effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of silicon micropowder grading equipment, specifically a high-efficiency silicon micropowder grading and collection system. Background Technology

[0002] Silicon carbide micro powder is green, has a crystalline structure, high hardness, strong cutting ability, stable chemical properties, and good thermal conductivity. Its microstructure is hexagonal crystal. Green silicon carbide is produced by high-temperature smelting in an electric resistance furnace using petroleum coke and high-quality silica as the main raw materials, with salt added as an additive. Its hardness is between corundum and diamond, and its mechanical strength is higher than corundum. The silicon carbide microparticles are sieved according to production requirements to determine their size.

[0003] An existing technology, patent application number 202122322279.3, describes an environmentally friendly silicon carbide micropowder grading and screening system. This system includes a power unit and a column. Gaskets are fixedly connected to the bottom of both the power unit and the column. A linkage device is rotatably connected to the top of both the power unit and the column. A screening device is rotatably connected to the top of all the linkage devices. The screening device includes a housing with a sieve plate fixedly connected to the inner wall. A first through-hole is opened at the top of the housing, a fourth through-hole at the bottom, and second and third through-holes on the side walls of the housing, respectively. A first valve body, a second valve body, a third valve body, and a fourth valve body are correspondingly arranged on the outer wall of the housing. This invention enables more thorough screening of silicon carbide micropowder, resulting in better screening effects and achieving grading and screening functions to meet different production needs. However, the aforementioned existing technology is inconvenient for cleaning the filter screen, requiring lengthy manual cleaning, which affects the screening efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency silicon micropowder classification and collection system to solve the problem that the existing technology is inconvenient to clean the filter screen and requires long-term manual cleaning, which affects the screening efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency silicon micropowder classification and collection system, including a collection box, an air inlet pipe connected to the upper end of the collection box, a filter screen installed inside the collection box via an elastic lifting bracket, a cam excitation mechanism installed on the upper side of the elastic lifting bracket, a first discharge port and a second discharge port respectively provided on the two side walls of the collection box, a first baffle inserted in the first discharge port, a second baffle inserted longitudinally in the second discharge port, a screen cleaning mechanism installed on the upper side of the filter screen, the screen cleaning mechanism including a cleaning support installed on the upper side of the filter screen, a transverse sliding block installed on the inner side of the cleaning support via a lead screw, and a cleaning brush installed on one side of the transverse sliding block via a cleaning plate.

[0006] Furthermore, an exhaust fan is provided at the air inlet end of the air inlet pipe, and a drying chamber is also provided on the air inlet pipe next to the exhaust fan.

[0007] Furthermore, the elastic lifting bracket includes support rods set at the four corners of the filter screen, a lifting plate is provided at the top of the support rod, a connecting plate is provided on the inner wall of the collection box, and the support rod and the connecting plate are longitudinally slidably arranged, and a spring is sleeved on the outside of the support rod between the connecting plate and the lifting plate.

[0008] Furthermore, the support rod is arranged parallel to the side wall of the collection box, and the lifting plate is arranged parallel to the top wall of the collection box.

[0009] Furthermore, an inspection door is hinged to one side of the collection box, and a lock and an exhaust port are provided on one side of the inspection door.

[0010] Furthermore, the cam excitation mechanism includes a cam that is rotatably mounted on the top of the collection box via a connecting shaft. One end of the connecting shaft is connected to a motor via a gear set, and the motor is fixedly mounted on the outer wall of the collection box.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, a filter screen is installed in the collection box through an elastic lifting bracket, and a cam excitation mechanism is provided on the elastic lifting bracket. This allows the filter screen to be installed longitudinally and elastically at the top of the collection box for screening silicon micro powder. The cam excitation mechanism drives the filter screen to lift and vibrate, which can reduce the probability of filter clogging and improve the screening effect.

[0013] 2. The cam excitation mechanism of this utility model includes a cam that is rotatably mounted on the top of the collection box via a connecting shaft. One end of the connecting shaft is connected to an electric motor via a gear set. The electric motor is fixedly installed on the outer wall of the collection box, so that the connecting shaft and the cam are driven to rotate at a constant speed by the electric motor and the gear set. This allows the lifting plate on the top of the elastic lifting bracket to be adjusted up and down in conjunction with the spring, thereby realizing the lifting and vibrating screening of the filter screen. Moreover, the transmission stability is high and the excitation effect is good.

[0014] 3. This utility model features a screen cleaning mechanism on the filter screen. The screen cleaning mechanism includes a cleaning support on the upper side of the filter screen. A horizontal sliding block is provided on the inner side of the cleaning support via a screw. A cleaning brush is provided on one side of the horizontal sliding block via a cleaning plate. This allows the horizontal sliding block, cleaning plate, and cleaning brush to move laterally on the upper side of the filter screen via the screw, which can push the material remaining on the upper side of the filter screen into the first discharge port for discharge, making cleaning convenient and quick. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the collection box of this utility model;

[0018] Figure 3 This is a schematic diagram of the cam excitation mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the cleaning support structure of this utility model.

[0020] In the diagram: 1. Collection box; 2. Air inlet pipe; 3. Exhaust fan; 4. Drying box; 5. Cleaning brush; 6. Inspection door; 7. Hinge; 8. First discharge port; 9. First baffle; 10. Second discharge port; 11. Second baffle; 12. Filter screen; 13. Support rod; 14. Connecting plate; 15. Spring; 16. Lifting plate; 17. Cam; 18. Connecting shaft; 19. Cleaning support; 20. Gear set; 21. Motor; 22. Lead screw; 23. Horizontal sliding block; 24. Cleaning plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4In this embodiment of the present invention, a high-efficiency silicon micro powder classification and collection system includes a collection box 1. An air inlet pipe 2 is connected to the upper end of the collection box 1. An induced draft fan 3 is provided at the air inlet end of the air inlet pipe 2 to provide negative pressure to suck up the powder. A drying box 4 is also provided on the air inlet pipe 2 next to the induced draft fan 3 to dry the incoming dust and prevent the damp material from entering the collection box 1 and affecting the screening effect. A filter screen 12 is provided inside the collection box 1 through an elastic lifting bracket. A cam excitation mechanism is provided on the upper side of the elastic lifting bracket. A first discharge port 8 and a second discharge port 10 are provided on the two side walls of the collection box 1. The silicon micro powder is screened and classified using the filter screen 12. Large particles are discharged from the first discharge port 8, and small particles fall to the bottom of the collection box 1 and are discharged from the second discharge port 10. A first baffle 9 is inserted in the first discharge port 8, and a second baffle 11 is inserted longitudinally in the second discharge port 10. The baffles facilitate the control of the opening and closing of the discharge ports.

[0023] like Figure 1 and Figure 2 As shown, in order to facilitate the cleaning of the upper part of the filter screen 12, a screen cleaning mechanism is also provided on the upper side of the filter screen 12. The screen cleaning mechanism includes a cleaning support 19 set on the upper side of the filter screen 12. A horizontal sliding block 23 is provided on the inner side of the cleaning support 19 via a lead screw 22. A cleaning brush 5 is provided on one side of the horizontal sliding block 23 via a cleaning plate 24. The horizontal sliding block 23, the cleaning plate 24 and the cleaning brush 5 are driven by the lead screw 22 to move laterally on the upper side of the filter screen 12, which can push the material remaining on the upper side of the filter screen 12 into the first discharge port 8 for discharge, making cleaning convenient and quick.

[0024] like Figure 1 and Figure 2 As shown, in order to dampen the vibration of the filter screen 12, the elastic lifting bracket also includes support rods 13 set at the four corners of the filter screen 12. The top of the support rods 13 is provided with a lifting plate 16. The inner wall of the collection box 1 is provided with a connecting plate 14. The support rods 13 and the connecting plate 14 are longitudinally slidably arranged. A spring 15 is sleeved on the outside of the support rods 13 between the connecting plate 14 and the lifting plate 16, so that the filter screen 12 can be elastically slidably set in the upper part of the blower 3 for damping the vibration of the filter screen 12.

[0025] like Figure 1 and Figure 2 As shown, in order to facilitate the inspection and ventilation of the inside of the collection box 1, the support rod 13 is set parallel to the side wall of the collection box 1, the lifting plate 16 is set parallel to the top wall of the collection box 1, and the inspection door 6 is hinged to one side of the collection box 1 by the hinge 7. The inspection door 6 is equipped with a lock and an exhaust port on one side, which facilitates the inspection and ventilation of the inside of the collection box 1.

[0026] like Figure 2 and Figure 3As shown, in order to achieve the lifting and vibrating screening of the filter screen 12, the cam excitation mechanism includes a cam 17 rotatably mounted on the top of the collection box 1 via a connecting shaft 18. One end of the connecting shaft 18 is connected to a motor 21 via a gear set 20. The motor 21 is fixedly installed on the outer wall of the collection box 1, so that the connecting shaft 18 and the cam 17 are driven to rotate at a uniform speed by the motor 21 and the gear set 20. This allows the lifting plate 16 on the top of the elastic lifting bracket to be adjusted up and down in conjunction with the spring 15, thereby achieving the lifting and vibrating screening of the filter screen 12. Moreover, the transmission stability is high and the excitation effect is good.

[0027] The working principle and usage process of this utility model are as follows: When in use, gas containing silicon micro powder is introduced into the collection box 1 through the air inlet pipe 2. The silicon micro powder is screened and graded using the filter screen 12. Large particles are discharged from the first discharge port 8, and small particles fall into the bottom of the collection box 1 and are discharged from the second discharge port 10. Moreover, the elastic lifting bracket facilitates the longitudinal elastic installation of the filter screen 12 at the top of the collection box 1. At the same time, the cam vibration mechanism drives the filter screen 12 to lift and vibrate, which can reduce the probability of filter pore blockage and improve the screening effect.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency silicon powder grading and collecting system comprising a collecting box (1), characterized in that: The upper end of the collection box (1) is connected to an air inlet pipe (2). Inside the collection box (1), a filter screen (12) is provided through an elastic lifting bracket. A cam excitation mechanism is provided on the upper side of the elastic lifting bracket. The two side walls of the collection box (1) are provided with a first discharge port (8) and a second discharge port (10). A screen cleaning mechanism is provided on the upper side of the filter screen (12). The screen cleaning mechanism includes a cleaning support (19) provided on the upper side of the filter screen (12). A horizontal sliding block (23) is provided on the inner side of the cleaning support (19) through a lead screw (22). A cleaning brush (5) is provided on one side of the horizontal sliding block (23) through a cleaning plate (24).

2. The high performance silicon fume classification system of claim 1, wherein: The air inlet pipe (2) is equipped with an exhaust fan (3), and a drying box (4) is also provided on the air inlet pipe (2) next to the exhaust fan (3).

3. The high performance silicon fume classification system of claim 1, wherein: The elastic lifting bracket includes support rods (13) set at the four corners of the filter screen (12), a lifting plate (16) is provided on the top of the support rod (13), a connecting plate (14) is provided on the inner wall of the collection box (1), and the support rod (13) and the connecting plate (14) are longitudinally slidably arranged, and a spring (15) is sleeved on the outside of the support rod (13) between the connecting plate (14) and the lifting plate (16).

4. The high performance silicon fume classification system of claim 3, wherein: The support rod (13) is arranged parallel to the side wall of the collection box (1), and the lifting plate (16) is arranged parallel to the top wall of the collection box (1).

5. The high performance silicon fume classification system of claim 1, wherein: The collection box (1) has an inspection door (6) hinged to one side by a hinge (7), and the inspection door (6) has a lock and an exhaust port on one side.

6. The high performance silicon fume classification system of claim 1, wherein: The cam excitation mechanism includes a cam (17) that is rotatably mounted on the top of the collection box (1) via a connecting shaft (18). One end of the connecting shaft (18) is connected to a motor (21) via a gear set (20). The motor (21) is fixedly mounted on the outer wall of the collection box (1).

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