Screening equipment for hexagonal boron nitride production

Abstract

The screening equipment for hexagonal boron nitride production comprises a screening frame, supporting legs, a screening net, a material guide plate and a motor, the supporting legs installed through screws are arranged at the four corners of the bottom of the screening frame, the bottoms of the supporting legs are designed in an expanded foundation mode, the top and one side of the screening frame are designed in an open mode, and the screening net is arranged on the upper portion in the screening frame. Hexagonal boron nitride needing to be screened is placed on the screening net, a material guide plate is arranged below the screening net, baffles are installed above the screening net and arranged in three directions, no baffle is arranged on the side close to an opening of the screening frame, a motor is installed below the screening frame, and the motor is powered by a mains supply. The device is reasonable in design; and the screening net can move forwards and backwards under the action of the motor so as to screen hexagonal boron nitride.

Description

Technical Field

[0001] The utility model relates to a screening device for the production of hexagonal boron nitride. Background Art

[0002] With the development of aviation and high-precision machine tools, hexagonal boron nitride, as a high-temperature resistant material, has attracted more and more attention. When producing hexagonal boron nitride, in order to ensure the quality, it is necessary to screen the products. The existing screening devices are mostly vibration screening or front-and-back moving screening, and the single screening form results in unsatisfactory screening effects. Content of the Utility Model

[0003] The purpose of the utility model is to provide a screening device for the production of hexagonal boron nitride to solve the above technical problems.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A screening device for the production of hexagonal boron nitride includes a screening frame, support legs, a screening mesh, a guide plate, and a motor. Support legs are installed at the four corners of the bottom of the screening frame by screws, and the bottom of the support legs is designed as an enlarged foundation. The top and one side of the screening frame are open. A screening mesh is arranged above the inside of the screening frame, and the hexagonal boron nitride to be screened is placed on the screening mesh. A guide plate is arranged below the screening mesh. A baffle is installed above the screening mesh, and the baffle is arranged in three directions, and no baffle is arranged on the side close to the open side of the screening frame. A motor is installed below the screening frame, and the motor is powered by the mains.

[0006] Preferably, the guide plate is inclined, and the guide plate is inclined downward towards the open side of the screening frame. A receiving box is installed at the open ends of the screening mesh and the guide plate to collect the screened hexagonal boron nitride. A support plate is installed at the bottom of the guide plate by screws, the support plate is connected to a guide rail, the guide rail is connected to the inner bottom of the screening frame, and buffer springs are installed on both sides inside the guide rail by screws.

[0007] Preferably, a groove is formed in the support plate, the groove runs through the support plate, protruding grooves are integrally formed on the upper and lower sides of the groove, there are multiple protruding grooves, and the multiple protruding grooves form a rack-like structure. A special-shaped gear is arranged in the groove, and the special-shaped gear is connected to the motor.

[0008] Preferably, half of the surface of the special-shaped gear has tooth grooves, and the other half is designed as a circular surface. After the special-shaped gear rotates, it can mesh with the protruding grooves. A limiting block is arranged above the groove, and the limiting block is connected to the support plate. A cylinder is installed on the side of the special-shaped gear away from the motor by screws, and a convex rod is installed on the cylinder by screws. The top of the convex rod is designed as an arc. The convex rod rotates together with the special-shaped gear, and after the convex rod rotates to the highest point, it can contact the limiting block. Springs are installed on both sides of the lower part of the support plate by screws, the springs are connected to sliders, and the sliders are connected to the guide rail.

[0009] Compared with the prior art, the utility model has the following advantages: The utility model is reasonably designed; the motor drives the support plate to move back and forth in the guide rail through a special-shaped gear, so as to screen hexagonal boron nitride on the screening net, and the screened hexagonal boron nitride can be quickly collected when it falls onto the material guide plate; when the special-shaped gear rotates, it can drive the cylinder to rotate together, and the convex rod on the cylinder can contact the limit block intermittently. When the convex rod contacts the limit block, the spring is stretched, so that the support plate rises within a small range. When the convex rod separates from the limit block, the support plate descends. The reciprocating rise and fall of the support plate improves the screening effect; the buffer spring in the guide rail can protect the support plate. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the screening equipment for the production of hexagonal boron nitride of the utility model.

[0011] Figure 2 It is a schematic diagram of the screening net and the support plate of the screening equipment for the production of hexagonal boron nitride of the utility model.

[0012] Figure 3 It is an exploded schematic diagram of the special-shaped gear and the support plate of the screening equipment for the production of hexagonal boron nitride of the utility model. Detailed Embodiment

[0013] The following further elaborates the utility model in detail in conjunction with the drawings and specific embodiments.

[0014] Such as Figures 1-3As shown in the figure, a screening device for the production of hexagonal boron nitride includes a screening frame 1, support legs 2, a screening mesh 3, a guide plate 4, and a motor 5. Screwed support legs 2 are provided at the four corners of the bottom of the screening frame 1. The bottom of the support legs 2 is designed with an enlarged foundation. The top and one side of the screening frame 1 are open. A screening mesh 3 is provided above the inside of the screening frame 1. The hexagonal boron nitride to be screened is placed on the screening mesh 3. A guide plate 4 is provided below the screening mesh 3. A baffle is installed above the screening mesh 3. The baffle is arranged in three directions, and no baffle is provided near the open side of the screening frame 1. A motor 5 is installed below the screening frame 1. The motor 5 is powered by the mains electricity. The guide plate 4 is inclined. The guide plate 4 is inclined downward towards the open side of the screening frame 1. A receiving box is installed at the open end of the screening mesh 3 and the guide plate 4 to collect the screened hexagonal boron nitride. A support plate 6 is screwed to the bottom of the guide plate 4. The support plate 6 is connected to a guide rail 7. The guide rail 7 is connected to the inner bottom of the screening frame 1. Buffer springs 8 are screwed to both sides inside the guide rail 7. A groove 9 is formed in the support plate 6. The groove 9 runs through the support plate 6. Protruding grooves 10 are integrally formed on the upper and lower sides inside the groove 9. There are multiple protruding grooves 10, and the multiple protruding grooves 10 form a rack-like structure. A special-shaped gear 11 is provided inside the groove 9. The special-shaped gear 11 is connected to the motor 5. Half of the surface of the special-shaped gear 11 has tooth grooves, and the other half is designed as a circular surface. After the special-shaped gear 11 rotates, it can mesh with the protruding groove 10. A limiting block 13 is provided above the groove 9. The limiting block 13 is connected to the support plate 6. A cylinder is screwed to the side of the special-shaped gear 11 away from the motor 5. A convex rod 12 is screwed to the cylinder. The top of the convex rod 12 is designed as an arc. The convex rod 12 rotates with the special-shaped gear 11. After the convex rod 12 rotates to the highest point, it can contact the limiting block 13. Springs 14 are screwed to both sides of the lower part of the support plate 6. The springs 14 are connected to sliders 15. The sliders 15 are connected to the guide rail 7.

[0015] The above is the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and variations made to the implementation manners still fall within the protection scope of the present invention.

Claims

1. A screening device for the production of hexagonal boron nitride, comprising a screening frame (1), support legs (2), a screening mesh (3), a guiding plate (4), and a motor (5), characterized in that, The four corners of the bottom of the screening frame (1) are provided with support legs (2) installed by screws. The bottom of the support legs (2) is designed with an enlarged foundation. The top and one side of the screening frame (1) are of an open design. Above the screening frame (1), a screening mesh (3) is provided. The hexagonal boron nitride to be screened is placed on the screening mesh (3). Below the screening mesh (3), a guiding plate (4) is provided. Above the screening mesh (3), a baffle is installed. The baffle is arranged in three directions, and no baffle is provided on the side close to the open side of the screening frame (1). Below the screening frame (1), a motor (5) is installed, and the motor (5) is powered by the mains electricity.

2. The screening device for the production of hexagonal boron nitride according to claim 1, wherein The guiding plate (4) is of an inclined design and slopes downward toward the open side of the screening frame (1). At the open part of the screening mesh (3) and the guiding plate (4), a receiving box is installed to collect the screened hexagonal boron nitride. At the bottom of the guiding plate (4), a support plate (6) installed by screws is provided. The support plate (6) is connected to a guide rail (7), and the guide rail (7) is connected to the inner bottom of the screening frame (1). On both sides inside the guide rail (7), buffer springs (8) installed by screws are provided.

3. The screening device for the production of hexagonal boron nitride according to claim 2, characterized in that, A groove (9) is formed in the support plate (6), and the groove (9) runs through the support plate (6). On the upper and lower sides inside the groove (9), integrally formed protruding grooves (10) are provided. There are multiple protruding grooves (10), and the multiple protruding grooves (10) form a rack-like structure. Inside the groove (9), a special-shaped gear (11) is provided, and the special-shaped gear (11) is connected to the motor (5).

4. The screening device for producing hexagonal boron nitride according to claim 3, characterized in that, Half of the surface of the special-shaped gear (11) has tooth grooves, and the other half is of a circular surface design. After the special-shaped gear (11) rotates, it can mesh with the protruding grooves (10). Above the groove (9), a limiting block (13) is provided, and the limiting block (13) is connected to the support plate (6). On the side of the special-shaped gear (11) away from the motor (5), a cylinder installed by screws is provided, and a convex rod (12) installed by screws is provided on the cylinder. The top of the convex rod (12) is of an arc design. The convex rod (12) rotates together with the special-shaped gear (11), and after the convex rod (12) rotates to the highest point, it can contact the limiting block (13). On both sides of the lower part of the support plate (6), springs (14) installed by screws are provided, and the springs (14) are connected to sliders (15), and the sliders (15) are connected to the guide rail (7).

Images