Environment-friendly isostatic pressing graphite powder automatic screening device

Abstract

The utility model discloses an environment-friendly isostatic pressing graphite powder automatic screening device which comprises a vacuum pump, a shell and a screening frame, a cover plate is arranged at the top of the shell, a discharging hopper extending downwards is arranged on the cover plate, the screening frame is suspended in the shell and located below the bottom of the discharging hopper, a cross beam is arranged on the screening frame, and the cross beam is connected with the vacuum pump. The vacuum pump is arranged on the cross beam, the upper end of the outer portion of the discharging hopper is sleeved with a flow guide cover, a circle of air suction holes communicated with the flow guide cover are formed in the inner wall of the discharging hopper at intervals, and a first air pipe is arranged between the air inlet end of the vacuum pump and the flow guide cover. According to the environment-friendly automatic screening device for the isostatic pressing graphite powder, airflow on the upper portion of the discharging hopper is sucked in through the air suction holes, the problem that the environment is polluted in the isostatic pressing graphite powder screening process is solved, the screening work efficiency is improved, and energy consumption can be reduced easily.

Description

Technical Field

[0001] This utility model relates to the field of isostatic graphite powder screening technology, and in particular to an environmentally friendly automatic isostatic graphite powder screening device. Background Technology

[0002] In the production process of isostatic graphite products, it is necessary to first screen the powder to remove larger particles and obtain qualified powder. Then, the powder is filled into the mold and placed into the isostatic pressing equipment for molding.

[0003] Screening of isostatic graphite powder can be done using a vibrating screen, which operates through reciprocating rotary vibration generated by a vibrator. The powder is fed into the hopper of the vibrating screen for feeding and screening, which is highly efficient. However, tiny particles in the powder can easily be ejected from the equipment with the air during vibration, polluting the surrounding environment, wasting raw materials, and affecting the health of operators. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly automatic screening device for isostatic graphite powder, which improves screening efficiency and environmental friendliness, and avoids environmental pollution problems.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An environmentally friendly automatic screening device for isostatic graphite powder includes: a vacuum pump, a housing, and a screening frame. The housing is topped with a cover plate, and a downwardly extending hopper is provided on the cover plate. The screening frame is suspended in the housing and located below the bottom of the hopper. A crossbeam is provided on the screening frame. The vacuum pump is mounted on the crossbeam. A flow guide hood is fitted over the upper part of the hopper. A ring of suction holes connected to the flow guide hood is provided at intervals on the inner wall of the hopper. A first air pipe is provided between the air inlet of the vacuum pump and the flow guide hood.

[0007] The filter box is equipped with a screen.

[0008] The inner wall of the housing is symmetrically provided with ear seats extending to the lower edge of the screening frame, and the ear seats are provided with springs that are connected to the bottom edge of the screening frame.

[0009] The bottom of the shell is provided with a material collection hopper.

[0010] The bottom of the hopper is equipped with a discharge valve.

[0011] The air intake hole has an opening on the inner wall of the hopper that points obliquely downward toward the center line of the hopper.

[0012] An air filter is provided on one side of the housing, and a second air pipe is provided between the air filter and the air outlet of the vacuum pump.

[0013] The first and second tracheas are both flexible tracheas.

[0014] The beneficial effects of this utility model are as follows: An environmentally friendly automatic screening device for isostatic graphite powder uses a vacuum pump to evacuate the guide hood and uses the suction hole to draw in the airflow from the upper part of the feed hopper, reducing the problem of powder escaping upward with the airflow in the feed hopper. This solves the problem of environmental pollution during the screening process of isostatic graphite powder. Moreover, the vibration generated during the operation of the vacuum pump enhances the automatic screening of isostatic graphite powder in the screening frame, improves work efficiency, and reduces energy consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0016] The following is combined Figure 1 The technical solution of this utility model will be further illustrated through specific embodiments.

[0017] like Figure 1 The environmentally friendly isostatic graphite powder automatic screening device shown includes: a vacuum pump 5, a housing 1 and a screening frame 7. The top of the housing 1 is provided with a cover plate 16, which is fixed to the housing 1 by screws. The structure is stable and easy to disassemble and maintain.

[0018] A downwardly extending hopper 2 is provided on the cover plate 16. The outer wall of the hopper 2 is welded and fixed to the cover plate 16, which makes the structure firm and airtight, thus preventing the powder from escaping from the connection between the hopper 2 and the cover plate 16.

[0019] The screening frame 7 is suspended in the housing 1 and located below the bottom of the hopper 2. In this embodiment, the inner wall of the housing 1 is symmetrically provided with ear seats 9 extending to the bottom edge of the screening frame 7. The ear seats 9 are provided with springs 8 connected to the bottom edge of the screening frame 7 to provide elastic support for the screening frame 7, which is beneficial to the vibration of the screening frame 7.

[0020] like Figure 1 As shown, a collection hopper 10 is provided at the bottom of the housing 1, and a screen 14 is provided in the screening frame 7. After the isostatic graphite powder in the feed hopper 2 falls into the screening frame 7, it is screened by the screen 14. The qualified powder continues to fall into the collection hopper 10 below. A discharge valve 15 is provided at the bottom of the collection hopper 10, which is easy to operate and can keep the discharge valve 15 closed during the screening process.

[0021] A crossbeam 13 is provided on the screening frame 7, and the vacuum pump 5 is provided on the crossbeam 13. The vacuum pump 5 will generate vibration during operation, which will drive the screening frame 7 and the screen 14 to vibrate, enhance the automatic screening of the medium static pressure graphite powder in the screening frame 7, improve the screening efficiency, and eliminate the need for additional vibrators for excitation, thereby reducing energy consumption and achieving good energy saving.

[0022] An annular guide shroud 4 is fitted on the upper part of the feed hopper 2. A ring of suction holes 3 connected to the guide shroud 4 are arranged at intervals on the inner wall of the feed hopper 2. A first air pipe 11 is provided between the air inlet of the vacuum pump 5 and the guide shroud 4. After the vacuum pump 5 is turned on, the guide shroud 4 is evacuated. The air in the upper part of the feed hopper 2 is drawn in by the suction holes 3, which reduces the problem of the powder in the lower part of the feed hopper 2 escaping upward with the air flow, thereby solving the problem of environmental pollution during the screening of isostatic graphite powder.

[0023] In this embodiment, the opening of the suction hole 3 on the inner wall of the hopper 2 is obliquely downward pointing to the center line of the hopper 2, so that larger particles of powder that accidentally enter the suction hole 3 can fall with their own weight, and smaller particles of powder can enter the first air pipe 11 through the suction hole 3.

[0024] like Figure 1 As shown, an air filter 6 is provided on one side of the housing 1. A second air pipe 12 is provided between the air filter 6 and the air outlet of the vacuum pump 5. Tiny powder particles are sent into the air filter 6 through the second air pipe 12 for filtration and collection, which is beneficial for the recycling of powder and avoids environmental pollution, making the production process more environmentally friendly.

[0025] In this embodiment, the first air pipe 11 and the second air pipe 12 are both flexible air pipes, which are well adapted to the vibration during the operation of the vacuum pump 5. In addition, the air filter 6 includes a housing and a built-in filter cartridge. The housing can be fixed to one side of the housing 1 with screws, which facilitates disassembly and replacement of the filter cartridge in the housing, making maintenance relatively convenient.

[0026] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An automatic screening device for environment-friendly isostatic graphite powder, characterized in that, The utility model relates to a kind of screening frame and vacuum pump, including: Vacuum pump, shell and screening frame, the top of the shell is provided with cover plate, the cover plate is provided with downwardly extending lower hopper, the screening frame is suspended in shell and is located below the bottom of lower hopper, the screening frame is provided with crossbeam, the vacuum pump is set on crossbeam, the outer upper end of lower hopper is equipped with fairing, the inner wall of lower hopper is spaced apart and is provided with a circle of suction hole being connected with fairing, the first air pipe is arranged between the air inlet end of vacuum pump and fairing.

2. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 1, characterized in that, Screening frame is provided with screen.

3. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 1, characterized in that, The ear seat extending to the edge of the screening frame is symmetrically arranged on the inner wall of the shell, and the spring is arranged on the ear seat and connected with the bottom edge of the screening frame.

4. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 1, characterized in that, The shell is provided with a collecting hopper at the bottom.

5. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 4, characterized in that, The bottom of the collecting hopper is provided with a discharge valve.

6. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 1, characterized in that, The opening of the suction hole on the inner wall of the lower hopper is inclined downwardly to the center line of the lower hopper.

7. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 1, characterized in that, The shell is provided with an air filter on one side, and the second air pipe is arranged between the air outlet end of the vacuum pump and the air filter.

8. The automatic screening device for environment-friendly isostatic pressing graphite powder according to claim 7, characterized in that, The first air pipe and the second air pipe are respectively flexible air pipes.

Images