Vacuum oil filtering system of mechanical pump

Abstract

The utility model discloses a mechanical pump vacuum oil filtration system, which comprises a filter cotton filter at the front part of a mechanical pump and a multi-layer filter tank at the rear part of the mechanical pump, the multi-layer filter tank is connected with an oil tank of the mechanical pump through a connecting pipeline, the multi-layer filter tank comprises a tank body and an upper cover, the upper cover is provided with a pressure increasing valve and a pressure release valve, and the pressure increasing valve is connected with the pressure release valve. A plurality of layers of filter screens are arranged in the tank body, the mesh number of the filter screens is sequentially increased from top to bottom, a filter cotton filter is arranged at the front part of the mechanical pump, a plurality of layers of filter tanks are arranged at the rear part of the mechanical pump, and glue gas filtration in the early stage and vacuum pump oil filtration in the later stage are simultaneously mounted on the mechanical pump, so that the mixing amount of glue in oil is reduced, and the damage is reduced; the pump body is protected, the disassembly and assembly maintenance period of the mechanical pump is prolonged to 6 sintering periods from 2 sintering periods in the past, and a large amount of labor cost and accessory cost are saved.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum oil filtration technology, specifically relating to a mechanical pump vacuum oil filtration system. Background Technology

[0002] The slide valve mechanical vacuum pump is a commonly used vacuum pump in high-temperature vacuum furnaces. It uses the principle of gas expansion and compression to extract gas from the container. The pump oil plays a role in lubrication and helps open the exhaust valve when the gas pressure is low. Due to the multiple functions of the pump oil, it is required that the pump oil be clean, otherwise it will accelerate the wear of the pump body and block the exhaust valve.

[0003] In the silicon carbide sintering process, the commonly used method is debinding and sintering in one step. This method uses a vacuum pump to remove the binder from the ceramic blank during the vacuuming process. Inevitably, some binder gas will escape through the binder collection system and enter the pump oil, contaminating the pump oil and forming a viscous substance. This can cause the vacuum pump to seize up during operation, damage the pump body, or make it difficult to start up after a long period of vacuum interruption.

[0004] This invention mainly solves two problems: first, it prevents colloid gas from entering the vacuum oil; second, it filters out the small amount of colloid that enters the vacuum oil, which reduces damage to the pump body and extends the maintenance time of the vacuum pump. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems existing in the field of existing technology, this utility model provides a mechanical pump vacuum oil filtration system.

[0006] The mechanical pump vacuum oil filtration system provided by this utility model includes a filter cotton filter at the front of the mechanical pump and a multi-layer filter tank at the rear of the mechanical pump. The multi-layer filter tank is connected to the oil tank of the mechanical pump through a connecting pipe. The multi-layer filter tank includes a tank body and a top cover. The top cover is provided with a pressure boosting valve and a pressure relief valve. The tank body is provided with a filter screen, which has multiple layers, and the mesh size of the filter screen increases sequentially from top to bottom.

[0007] The filter cotton is installed on the inlet pipe at the front end of the mechanical pump.

[0008] A check valve is installed on the connecting pipe.

[0009] The filter screen includes a first layer, a second layer, and a third layer of filter screen arranged sequentially from top to bottom. The first layer of filter screen has a mesh size of 60 mesh, the second layer of filter screen has a mesh size of 100 mesh, and the third layer of filter screen has a mesh size of 200 mesh.

[0010] The filter screen is made of stainless steel.

[0011] The bottom of the multi-layer filter tank is connected to a return oil pipe.

[0012] The mechanical pump vacuum oil filtration system provided by this utility model has the following advantages: a cotton filter is provided at the front of the mechanical pump, and a multi-layer filter tank is provided at the rear of the mechanical pump. The initial viscous gas filtration and the subsequent vacuum pump oil filtration are installed on the mechanical pump at the same time, which reduces the amount of viscous impurities in the oil, reduces damage, protects the pump body, and extends the disassembly and maintenance cycle of the mechanical pump from the previous 2 sintering cycles to 6 sintering cycles, saving a lot of labor costs and parts costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0014] The image is labeled as follows:

[0015] 1. Motor; 2. Mechanical pump; 3. Check valve; 4. Connecting pipe; 5. Pressure relief valve; 6. Pressure boosting valve; 7. Multi-layer filter tank; 8. First layer filter screen; 9. Second layer filter screen; 10. Third layer filter screen; 11. Oil return pipe; 12. Inlet pipe; 13. Filter cotton filter. Detailed Implementation

[0016] The mechanical pump vacuum oil filtration system provided by this utility model will be described in detail below with reference to the accompanying drawings and an embodiment.

[0017] Example

[0018] Reference Figure 1 In this embodiment, the mechanical pump vacuum oil filtration system includes a motor 1 on the mechanical pump 2. The filtration system includes a filter cotton filter 13 at the front of the mechanical pump 2 and a multi-layer filter tank 7 at the rear of the mechanical pump 2. The multi-layer filter tank 7 is connected to the oil tank of the mechanical pump 2 through a connecting pipe 4. The multi-layer filter tank 7 includes a tank body and a top cover. The top cover is equipped with a pressure boosting valve 6 and a pressure relief valve 5. When the oil does not flow smoothly through the multi-layer filtration, the pressure boosting valve 6 is opened to pressurize and filter it. The pressure relief valve 5 is used to relieve pressure and prevent the pressure inside the multi-layer filter tank 7 from becoming too high due to pressure boosting. The tank body is equipped with a filter screen, which has multiple layers, and the mesh size of the filter screen increases sequentially from top to bottom.

[0019] The filter cotton filter 13 is installed on the inlet pipe 12 at the front end of the mechanical pump.

[0020] The connecting pipe 4 is equipped with a check valve 3, which allows oil to enter the multi-layer filter tank 7 from the oil tank of the mechanical pump 2, preventing untreated vacuum oil from flowing back into the oil tank.

[0021] The filter screen includes a first layer of filter screen 8, a second layer of filter screen 9, and a third layer of filter screen 10 arranged sequentially from top to bottom. The first layer of filter screen has a mesh size of 60 mesh, the second layer of filter screen has a mesh size of 100 mesh, and the third layer of filter screen has a mesh size of 200 mesh.

[0022] The filter screen is made of stainless steel with a high throughput.

[0023] The bottom of the multi-layer filter tank 7 is connected to the oil return pipe 11.

[0024] After the vacuum pump oil enters the multi-layer filter tank through the connecting pipe and check valve, it will pass through three layers of filter screens: a first layer, a second layer, and a third layer. These three filter screens are made of high-pass-through stainless steel mesh with mesh sizes of 60 mesh, 100 mesh, and 200 mesh, respectively. After three filtrations, the viscous paste-like substances mixed with oil and glue will be retained by the filter screens. If there is a lot of residual glue and the oil is difficult to filter, the pressure booster valve can be opened to apply a little pressure, which will force the oil to be filtered out. The safety valve is for safety pressure relief only, preventing excessive internal pressure.

[0025] By adding pre-processed glue gas filtration and post-processed vacuum pump oil filtration to the mechanical pump, the amount of glue mixed in the oil is reduced, which not only protects the pump body and reduces damage, but also extends the disassembly and maintenance cycle of the mechanical pump from the previous 2 sintering cycles to 6 sintering cycles, saving a lot of labor and parts costs.

Claims

1. A mechanical pump vacuum oil filtration system, characterized in that: The system includes a filter cotton filter at the front of the mechanical pump and a multi-layer filter tank at the rear of the mechanical pump. The multi-layer filter tank is connected to the oil tank of the mechanical pump via a connecting pipe. The multi-layer filter tank includes a tank body and a top cover. The top cover is equipped with a pressure boosting valve and a pressure relief valve. The tank body is equipped with a filter screen, which has multiple layers, and the mesh size of the filter screen increases sequentially from top to bottom.

2. The mechanical pump vacuum oil filtration system according to claim 1, characterized in that: The filter cotton is installed on the inlet pipe at the front end of the mechanical pump.

3. The mechanical pump vacuum oil filtration system according to claim 1, characterized in that: A check valve is installed on the connecting pipe.

4. The mechanical pump vacuum oil filtration system according to claim 1, characterized in that: The filter screen includes a first layer, a second layer, and a third layer of filter screen arranged sequentially from top to bottom. The first layer of filter screen has a mesh size of 60 mesh, the second layer of filter screen has a mesh size of 100 mesh, and the third layer of filter screen has a mesh size of 200 mesh.

5. The mechanical pump vacuum oil filtration system according to claim 1, characterized in that: The filter screen is made of stainless steel.

6. The mechanical pump vacuum oil filtration system according to claim 1, characterized in that: The bottom of the multi-layer filter tank is connected to a return oil pipe.

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