CN215844042U

CN215844042U - Sieving mechanism for silicon nitride goods

Info

Publication number: CN215844042U
Application number: CN202122146463.7U
Authority: CN
Inventors: 杨军
Original assignee: Tianjin Wake New Energy Technology Co ltd
Current assignee: Tianjin Wake New Energy Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-18
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to the technical field of silicon nitride processing, in particular to a screening device for a silicon nitride product, which comprises a screening box and a support for supporting the screening box, wherein the inner bottom surface of the screening box is obliquely arranged, one end of the bottom of the screening box is provided with a discharge hole, the bottom surface of the screening box is provided with a plurality of material leaking holes which penetrate along the length direction of the screening box, a material baffle plate is arranged inside the screening box and on one side of the material leaking holes close to the discharge hole, a filter screen is fixedly arranged inside each material leaking hole, and the diameter of meshes of the filter screen close to the top of the screening box is smaller than that of the filter screen far away from the top of the screening box. According to the utility model, the silicon nitride powder is screened by using the plurality of filter screens with different apertures at the bottom of the screening box, and the silicon nitride powder is stirred by using the raking roller to accelerate the screening efficiency.

Description

Sieving mechanism for silicon nitride goods

Technical Field

The utility model relates to the technical field of silicon nitride processing, in particular to a screening device for silicon nitride products.

Background

Silicon nitride products are products fired by using silicon nitride as a raw material, and currently, when enterprises produce silicon nitride products, silicon nitride powder needs to be filtered because impurities may be contained in the silicon nitride raw material. The existing silicon nitride powder is prepared by grinding, so that the particle diameter of the silicon nitride powder is difficult to avoid some differences, and in the actual production process, for different silicon nitride products, the particle diameter of the silicon nitride powder also has certain requirements, so that when the silicon nitride powder is filtered, impurities in the silicon nitride powder can be removed, and the silicon nitride powders with different diameters can be distinguished, so that the subsequent production task is facilitated. Therefore, a screening device for silicon nitride products is provided to well solve the above disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screening device for silicon nitride products, which solves the problems in the prior art by installing a plurality of filter screens with different apertures on a screening box to distinguish and screen silicon nitride powder.

The above object of the present invention is achieved by the following technical solutions:

a screening device for silicon nitride products comprises a screening box and a support for supporting the screening box, wherein the inner bottom surface of the screening box is obliquely arranged, a discharge hole is formed in one end of the bottom of the screening box, a plurality of material leaking ports are formed in the bottom surface of the screening box in a penetrating manner along the length direction of the screening box, a material blocking plate is arranged in the screening box and positioned on one side, close to the discharge hole, of the material leaking port, a filter screen is fixedly arranged in each material leaking port, the diameter of meshes of the filter screen close to the top of the screening box is smaller than that of meshes of the filter screen far away from the top of the screening box, the material blocking plate is in sliding connection along the vertical direction in the screening box, the material blocking plate is of a rectangular plate-shaped structure, and the front side edge and the rear side edge of the material blocking plate are respectively attached to the inner wall of the screening box; the inside of screening case and the top that is located every drain hole all is equipped with the harrow material roller that distributes along the horizontal direction for turn over the silicon nitride raw materials.

Preferably, the one end of harrow material roller is rotated with the inner wall of screening case and is connected, and the other end of harrow material roller runs through the lateral wall and the coaxial coupling of screening case and has the band pulley, and passes through belt drive between two adjacent band pulleys, the fixed driving motor that is provided with on the lateral wall of screening case, driving motor's output shaft passes through shaft coupling and one of them band pulley coaxial coupling.

Preferably, the screening case is provided with a positioning frame directly above the striker plate, the top surface of the positioning frame is fixedly provided with an electric cylinder, and a piston rod of the electric cylinder penetrates through the positioning frame and is fixedly connected with the striker plate.

Preferably, the bottom surface of screening case and the below that is located the drain hole are equipped with the collecting hopper, on the support and the below that is located the screening case is fixed and is equipped with the mounting panel, the top surface of mounting panel and the below that is located every collecting hopper all are equipped with the collecting box.

Preferably, the bottom surface of the striker plate is provided with an elastic rubber strip in an attaching manner.

Compared with the prior art, the utility model provides a screening device for silicon nitride products, which has the following beneficial effects:

1. according to the utility model, a plurality of filter screens with different apertures at the bottom of the screening box are used for screening the silicon nitride powder, and meanwhile, the rake roller is used for stirring the silicon nitride powder to accelerate the screening efficiency, compared with the traditional technology, the novel silicon nitride powder screening device can not only filter impurities, but also distinguish the silicon nitride powder with different particle diameters;

2. according to the utility model, the electric cylinder is used for controlling the elevation of the material baffle plate, and the driving motor is used for controlling the rotation of the material harrowing roller, so that the full automation of the whole screening process is realized, and the labor intensity of operators is greatly reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a structural sectional view of the present invention.

In the figure: 1. a screening box; 2. a support; 3. a discharge port; 4. a material leakage port; 5. a striker plate; 6. a filter screen; 7. a material raking roller; 8. a pulley; 9. a drive motor; 10. a positioning frame; 11. an electric cylinder; 12. a collection hopper; 13. mounting a plate; 14. and a collection box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 and 2, a screening device for silicon nitride products comprises a screening box 1 and a support 2 for supporting the screening box 1, wherein the inner bottom surface of the screening box 1 is inclined, a discharge port 3 is formed at one end of the bottom of the screening box 1, a plurality of material leaking ports 4 are formed in the bottom surface of the screening box 1 and penetrate along the length direction of the screening box 1, a material blocking plate 5 is arranged in the screening box 1 and on one side of the material leaking port 4 close to the discharge port 3, a filter screen 6 is fixedly arranged in each material leaking port 4, the diameter of the mesh of the filter screen 6 close to the top of the screening box 1 is smaller than that of the filter screen 6 far away from the top of the screening box 1, namely, the apertures of a plurality of filter screens 6 are different, the smaller the aperture of the filter screen 6 close to the top is, the material blocking plate 5 is slidably connected along the vertical direction in the screening box 1, namely, the material blocking plate 5 can lift along the vertical direction, the material baffle 5 is of a rectangular plate-shaped structure, the front side edge and the rear side edge of the material baffle are respectively attached to the inner wall of the screening box 1, and the bottom surface of the material baffle 5 is provided with an elastic adhesive tape in an attaching manner; screening case 1 is gone up and is located striker plate 5 and be equipped with locating rack 10 directly over, locating rack 10 and screening case 1's lateral wall fixed connection, and the top surface of locating rack 10 is fixed and is equipped with electric cylinder 11, and electric cylinder 11's piston rod passes locating rack 10 and striker plate 5 fixed connection for control striker plate 5 goes up and down.

Screening case 1's inside and the top that is located every hourglass material mouth 4 all is equipped with the harrow material roller 7 that distributes along the horizontal direction, a silicon nitride raw materials for turning, the one end of harrow material roller 7 rotates with the inner wall of screening case 1 to be connected, the other end of harrow material roller 7 runs through the lateral wall of screening case 1 and coaxial coupling has band pulley 8, and through belt drive between two adjacent band pulleys 8, the fixed driving motor 9 that is provided with on the lateral wall of screening case 1, driving motor 9's output shaft passes through shaft coupling and 8 coaxial coupling of one of them band pulley, therefore, can 7 rotations of simultaneous control polylith harrow material roller through driving motor 9, thereby stir silicon nitride raw materials, accelerate the screening efficiency of silicon nitride raw materials.

The bottom surface of screening case 1 and the below that is located drain hole 4 are equipped with collecting hopper 12, and collecting hopper 12 and the bottom surface spiro union of screening case 1 are fixed, and the fixed mounting panel 13 that is equipped with in below that just is located screening case 1 on support 2, mounting panel 13 and support 2 welded fastening, the top surface of mounting panel 13 and the below that is located every collecting hopper 12 all are equipped with collecting box 14, and consequently, the silicon nitride powder that drops just falls in corresponding collecting box 14 from collecting hopper 12.

The working principle is as follows: in the using process of the utility model, firstly, the silicon nitride raw material to be screened is poured from one side of the top of the screening box 1, then the driving motor 9 is started, and the driving motor 9 is utilized to drive the plurality of raking rollers 7 to rotate, thereby stirring the silicon nitride raw material. During the stirring process, the silicon nitride powder meeting the aperture requirement of the filter screen 6 can pass through the filter screen 6 and fall into the corresponding collection box 14; when no more silicon nitride powder passes through the uppermost filter screen 6, the corresponding baffle plate 5 is controlled to ascend by using the electric cylinder 11, so that the silicon nitride powder slides to the position above the second filter screen 6 from top to bottom, the steps are repeated until the silicon nitride raw material passes through all the filter screens 6, and finally, the silicon nitride raw material flows out of the discharge port 3 and is impurity or large-particle silicon nitride which is not fully ground.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sieving mechanism for silicon nitride goods, includes screening case (1) and is used for supporting support (2) of screening case (1), its characterized in that: the inner bottom surface of the screening box (1) is obliquely arranged, a discharge port (3) is formed in one end of the bottom of the screening box (1), a plurality of material leaking ports (4) are formed in the bottom surface of the screening box (1) in a penetrating mode along the length direction of the screening box (1), a material blocking plate (5) is arranged inside the screening box (1) and on one side, close to the discharge port (3), of the material leaking port (4), a filter screen (6) is fixedly arranged inside each material leaking port (4), the diameter of a mesh of the filter screen (6) close to the top of the screening box (1) is smaller than that of the filter screen (6) far away from the top of the screening box (1), the material blocking plate (5) is in sliding connection along the vertical direction in the screening box (1), the material blocking plate (5) is of a rectangular plate-shaped structure, and the front side edge and the rear side edge of the material blocking plate are respectively attached to the inner wall of the screening box (1); the inside of screening case (1) and the top that is located every drain hole (4) all are equipped with rake feed roller (7) along the horizontal direction distribution for turn over the silicon nitride raw materials.

2. The screening apparatus for silicon nitride products according to claim 1, wherein: the one end of harrow material roller (7) is rotated with the inner wall of screening case (1) and is connected, and the other end of harrow material roller (7) runs through the lateral wall and the coaxial coupling of screening case (1) and has band pulley (8), and passes through belt drive between two adjacent band pulleys (8), fixed driving motor (9) that are provided with on the lateral wall of screening case (1), the output shaft of driving motor (9) passes through the shaft coupling and one of them band pulley (8) coaxial coupling.

3. The screening apparatus for silicon nitride products according to claim 1, wherein: screening case (1) is gone up and is located striker plate (5) directly over be equipped with locating rack (10), the fixed electric cylinder (11) that are equipped with in top surface of locating rack (10), the piston rod of electric cylinder (11) pass locating rack (10) and with striker plate (5) fixed connection.

4. The screening apparatus for silicon nitride products according to claim 1, wherein: the bottom surface of screening case (1) and the below that is located drain hole (4) are equipped with collecting hopper (12), support (2) are gone up and are located the fixed mounting panel (13) that is equipped with in below of screening case (1), the top surface of mounting panel (13) and the below that is located every collecting hopper (12) all are equipped with collecting box (14).

5. The screening apparatus for silicon nitride products according to claim 1, wherein: the bottom surface laminating of striker plate (5) is equipped with and has elastic adhesive tape.