A silicon nitride ceramic raw material screening device

Abstract

The utility model relates to screening equipment technical field, concretely is a kind of silicon nitride ceramic raw material screening device. It includes screening box and multiple annular material tanks. Screening box is made of multiple annular housings arranged side by side;There is gap between adjacent two annular housings, the inner side of multiple gaps is provided with annular fence, and power assembly for driving multiple annular fences synchronous rotation is installed on screening box;In addition to the upper end annular housing, the inner side upper end of the remaining multiple annular housings is installed with filter plate, and the size of filter hole on multiple filter plates gradually decreases from top to bottom;Multiple annular material tanks are located below multiple annular fences respectively, multiple annular material tanks are all installed on screening box, and one side of multiple annular material tanks is all communicated with discharge chute. The utility model is driven annular fence rotation by the power assembly set, and the raw material after screening on filter plate can be quickly pushed out into annular material tank.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to a screening device for silicon nitride ceramic raw materials. Background Technology

[0002] Silicon nitride ceramics are inorganic ceramic materials that do not shrink during sintering. Silicon nitride has very high strength, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has properties such as high strength, low density, and high temperature resistance. Silicon nitride ceramic raw materials use silicon nitride powder. Before production, the silicon nitride powder may have impurities or caking, so it is necessary to screen the silicon nitride powder.

[0003] Traditional silicon nitride ceramic raw material screening devices typically suffer from the following technical defects: Generally, the machine screens raw materials of different diameters by setting up multiple-stage filters, but because the multiple-stage filters are set up side by side, unloading the material midway is difficult, which will affect the overall processing rhythm. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a silicon nitride ceramic raw material screening device.

[0005] The technical solution of this utility model is a silicon nitride ceramic raw material screening device, comprising:

[0006] The screening box consists of multiple annular shells arranged side by side, with connecting frames between adjacent annular shells. A support is provided at the bottom of the screening box. There are gaps between adjacent annular shells, and annular barriers are provided on the inner sides of the gaps. A power unit is installed on the screening box to drive the multiple annular barriers to rotate synchronously. Except for the upper annular shell, filter plates are installed on the upper inner sides of the other annular shells, and the filter pore size on the filter plates gradually decreases from top to bottom.

[0007] Multiple annular material troughs are located below multiple annular enclosures. All annular material troughs are installed on the screening box, and each annular material trough has a discharge trough connected to one side.

[0008] Preferably, a tray is provided on the upper part of the inner side of the screening box. The tray has a conical structure with its pointed end facing upwards, and the tray is connected to the inner wall of the screening box.

[0009] Preferably, a bottom mounting frame is provided at the bottom of the screening box, and a lifting rod is vertically provided above the bottom mounting frame. The lifting rod is connected to multiple filter plates, and an electric push rod for driving the lifting rod to rise and fall is installed on the bottom mounting frame.

[0010] Preferably, a funnel is provided at the bottom of the screening box.

[0011] Preferably, multiple discharge troughs are set at different angle positions.

[0012] Preferably, a ring is provided at the bottom of the inner side of each of the multiple annular material troughs, and an inclined surface is provided at the top of the ring, with the bottom of the inclined surface adjacent to the position of the corresponding side discharge trough.

[0013] Preferably, the power component includes a servo motor, which is mounted on the outside of the screening box. A rotating shaft is connected to the output shaft of the servo motor, and the rotating shaft is connected to the end of a plurality of annular barriers.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] 1. This technical solution enables multi-stage screening of silicon nitride ceramic raw materials by setting multiple filter plates, which can separate raw materials of different particle sizes, thereby improving screening efficiency and accuracy.

[0016] 2. The set power component can drive the ring enclosure to rotate, which can push the raw materials screened on the filter plate into the ring trough. The inclined surface on the inner ring of the ring trough allows the raw materials to slide to the bottom and finally be discharged through the discharge trough, thus making it convenient to collect raw materials of different diameters.

[0017] 3. The electric push rod drives the lifting rod to make the filter plate move up and down reciprocally, causing the material on the filter plate to vibrate, which can accelerate the filtration speed of the material and improve the efficiency of the screening work. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 and Figure 3 All are exploded views of this utility model.

[0020] Figure 4 This is a schematic diagram of the annular material trough in this utility model.

[0021] Reference numerals: 1. Screening box; 2. Support frame; 3. Annular trough; 4. Discharge trough; 5. Annular enclosure; 6. Connecting frame; 7. Servo motor; 8. Rotating shaft; 9. Funnel; 10. Electric push rod; 11. Bottom mounting frame; 12. Lifting rod; 13. Filter plate; 14. Support plate; 15. Circular ring. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-4 As shown in the figure, the silicon nitride ceramic raw material screening device proposed in this embodiment includes a screening box 1 and multiple annular material tanks 3.

[0024] The screening box 1 consists of multiple annular shells arranged side by side, with connecting frames 6 connecting each pair of adjacent annular shells. A support 2 is provided at the bottom of the screening box 1. Furthermore, a control panel is installed on the support 2. The control panel adopts a combination of HMI (Human Machine Interface) and PLC (Programmable Logic Controller). The HMI provides users with an intuitive and user-friendly operating interface, allowing them to easily issue various commands through the touch screen. There are gaps between adjacent annular shells, and annular barriers 5 are provided on the inner side of each gap. A power component for driving the multiple annular barriers 5 to rotate synchronously is installed on the screening box 1. The power component includes a servo motor 7, which is installed on the outside of the screening box 1. A rotating shaft 8 is connected to the output shaft of the servo motor 7, and the rotating shaft 8 is connected to the ends of the multiple annular barriers 5.

[0025] Except for the upper annular shell, filter plates 13 are installed on the upper inner side of the other annular shells, and the size of the filter holes on the filter plates 13 gradually decreases from top to bottom.

[0026] Multiple annular material troughs 3 are located below multiple annular enclosures 5. Multiple annular material troughs 3 are all installed on screening box 1. Each annular material trough 3 has a discharge trough 4 connected to one side. Multiple discharge troughs 4 are set at different angle positions. A ring 15 is set at the bottom of the inner side of multiple annular material troughs 3. An inclined surface is set at the upper end of the ring 15. The bottom end of the inclined surface is adjacent to the position of the corresponding side discharge trough 4. A funnel 9 is set at the bottom of screening box 1.

[0027] The bottom of the screening box 1 is provided with a bottom mounting frame 11, and a lifting rod 12 is vertically arranged above the bottom mounting frame 11. The lifting rod 12 is connected to multiple filter plates 13, and an electric push rod 10 for driving the lifting rod 12 to rise and fall is installed on the bottom mounting frame 11.

[0028] The working principle of this technical solution is as follows:

[0029] The silicon nitride ceramic raw material to be screened is fed into the top of the screening box 1. The material passes through multiple filter plates 13 in sequence. The material with a larger diameter is blocked by the upper filter plate 13, so that the material blocked by the upper filter plate 13 has a larger diameter, while the material on the lower filter plate 13 has a smaller diameter, thereby realizing the screening of the material.

[0030] When the material screened on the upper end of the filter plate 13 is removed, the servo motor 7 is started to drive the rotating shaft 8 to rotate. The rotation of the rotating shaft 8 drives multiple annular barriers 5 to rotate synchronously. In the initial state, the annular barriers 5 are coaxially set with the screening box 1 and can block the material. When they rotate, they can push the material on the upper end of the corresponding filter plate 13 to the inner side of the corresponding annular trough 3. Since the inner side of the annular trough 3 is provided with a ring 15 and the upper end of the ring 15 is provided with an inclined surface, the material inside the annular trough 3 can slide down to the side of the discharge trough 4 and finally be discharged into the designated collection box through the discharge trough 4.

[0031] During filtration, the electric push rod 10 can be activated to drive multiple filter plates 13 to move up and down synchronously, causing the material on the filter plates 13 to vibrate, thereby accelerating the filtration speed of the material.

[0032] Example 2

[0033] like Figure 3 As shown in the figure, the silicon nitride ceramic raw material screening device proposed in this embodiment has a tray 14 on the upper inner side of the screening box 1 compared with the first embodiment. The tray 14 has a conical structure with its tip pointing upwards and is connected to the inner wall of the screening box 1.

[0034] In this embodiment, the tray 14 can support the material put into the upper part of the screening box 1. If too much material is put in, the traditional filter plate 13 may be damaged or deformed due to the limited support strength. However, the tray 14 in this technical solution can bear part of the pressure caused by the material, which can effectively extend the service life of the filter plate 13.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A silicon nitride ceramic raw material screening device, characterized in that, include: The screening box (1) is composed of multiple annular shells arranged side by side, and a connecting frame (6) is connected between two adjacent annular shells. A bracket (2) is provided at the bottom of the screening box (1). There are gaps between two adjacent annular shells, and annular barriers (5) are provided on the inner side of multiple gaps. A power component for driving multiple annular barriers (5) to rotate synchronously is installed on the screening box (1). Except for the upper annular shell, filter plates (13) are installed on the upper inner side of the other multiple annular shells. The size of the filter holes on the multiple filter plates (13) gradually decreases from top to bottom. Multiple annular material troughs (3) are located below multiple annular enclosures (5). The multiple annular material troughs (3) are all installed on the screening box (1). One side of each of the multiple annular material troughs (3) is connected to a discharge trough (4).

2. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, A tray (14) is provided on the upper inner side of the screening box (1). The tray (14) has a conical structure with its pointed end facing upwards. The tray (14) is connected to the inner wall of the screening box (1).

3. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, The bottom of the screening box (1) is provided with a bottom mounting frame (11), and a lifting rod (12) is vertically installed above the bottom mounting frame (11). The lifting rod (12) is connected to multiple filter plates (13). An electric push rod (10) for driving the lifting rod (12) to rise and fall is installed on the bottom mounting frame (11).

4. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, A funnel (9) is provided at the bottom of the screening box (1).

5. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, Multiple discharge troughs (4) are set at different angle positions.

6. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, Multiple annular material troughs (3) are provided with a ring (15) at the bottom of the inner side. The upper end of the ring (15) is provided with an inclined surface, and the bottom end of the inclined surface is adjacent to the position of the corresponding side discharge trough (4).

7. The silicon nitride ceramic raw material screening device according to claim 1, characterized in that, The power unit includes a servo motor (7), which is installed on the outside of the screening box (1). A rotating shaft (8) is connected to the output shaft of the servo motor (7), and the rotating shaft (8) is connected to the end of a plurality of annular barriers (5).

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