Oil mist treatment device for slide valve vacuum pump

Abstract

The utility model discloses a slide valve vacuum pump oil mist treatment device which comprises a box body, an opening is formed in the top of the box body, and a sealing cover plate covers the opening. A partition plate is arranged in the box body and divides an inner cavity of the box body into an upper cavity and a lower cavity; wherein the lower cavity is filled with a plurality of polyhedral hollow balls, one side of the lower cavity is connected with an air inlet and a water outlet, and a water drain valve is arranged in the water outlet; a plurality of filter elements are arranged in the upper cavity, the bottoms of the filter elements are arranged at the upper part of the partition plate, and through holes communicated with the air inlets of the filter elements are formed in the partition plate; and a smoke outlet is formed in the box body corresponding to the upper cavity. According to the utility model, the filter element is not easy to soak and convenient to disassemble and assemble, the purification effect can be guaranteed after multiple times of use, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of slide valve vacuum pump technology, and specifically to an oil mist treatment device for slide valve vacuum pump. Background Technology

[0002] In the production of titanium and titanium alloys, welding and smelting must be carried out under a certain vacuum atmosphere. In actual production, a slide valve vacuum pump is used as the first-stage pump in the vacuum system. The gas generated by drawing a vacuum from the equipment cavity is finally discharged through the exhaust port of the slide valve vacuum pump. This gas is mainly composed of water vapor and lubricating oil mist from the vacuum pump. To ensure that it does not pollute the environment or harm the health of employees, the discharged gas needs to be filtered and purified.

[0003] The existing oil mist treatment method provided by slide valve vacuum pump manufacturers is to directly install an oil mist filter canister at the exhaust port of the slide valve vacuum pump. However, due to the generally high humidity in southern regions, the gas discharged during vacuuming contains a large amount of water vapor, which condenses directly inside the oil mist filter canister. After the filter element is soaked with condensate, the filtration and purification effect drops rapidly, resulting in a short service life of the filter element. Moreover, the slide valve vacuum pump in the vacuum system is designed with one pump in operation and one on standby. The exhaust pipes of the two pumps are connected to a main exhaust pipe. The oil mist filter canister is installed between the vacuum pump and the exhaust pipe, which is a small space and makes it inconvenient to replace the filter element. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide an oil mist treatment device for a slide valve vacuum pump, so as to solve the problems of short filter life and inconvenient operation of replacing filter elements in the existing oil mist filter tank of the slide valve vacuum pump.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A slide valve vacuum pump oil mist treatment device includes a housing, characterized in that the top of the housing is open and covered with a sealing cover; a partition is provided inside the housing, dividing the inner cavity of the housing into an upper cavity and a lower cavity; the lower cavity is filled with a plurality of multifaceted hollow spheres, and an air inlet and a drain outlet are connected to one side of the lower cavity, wherein a drain valve is provided in the drain outlet; a plurality of filter elements are provided in the upper cavity, the bottom of the filter elements is placed on the upper part of the partition, and a through hole communicating with the air inlet of each filter element is opened on the partition; a smoke exhaust port is opened on the housing corresponding to the upper cavity.

[0007] Preferably, a mounting ring is fixedly connected to the top of each through hole on the partition plate, and a cross plate is fixedly connected inside each mounting plate. Each cross plate has an internal threaded hole at its center. A vertically arranged screw is threaded into each internal threaded hole. Each screw passes upward through the middle of its corresponding filter element and is threaded with a nut. The filter element is installed on the partition plate by tightening the nut and the screw.

[0008] Preferably, a pressure gauge is provided on the air inlet. The clogging status of the oil mist treatment device can be determined by the air inlet pressure reading, facilitating timely replacement of the filter element or cleaning and maintenance.

[0009] The aforementioned multifaceted hollow sphere is made of polypropylene, which has a large surface area and can reduce the gas flow rate. This allows most of the water vapor and oil to condense and accumulate in the lower cavity, thus making the filter element on the partition less susceptible to water vapor immersion.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] With this invention, the filter element is not easily wetted, the purification effect can be guaranteed even after multiple uses, and the service life is long.

[0012] This invention, through its sealed box cover and filter element installation method, allows for easy and labor-saving filter element replacement by simply opening the sealed box cover and loosening the nut. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the partition and other structures described in this utility model. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings. Any parts not detailed below are based on existing technology in the field.

[0016] like Figure 1 , Figure 2 As shown, this utility model discloses a slide valve vacuum pump oil mist treatment device, including a housing 1 and a partition 10 dividing the inner cavity of the housing 1 into an upper cavity and a lower cavity. The housing 1 has an opening at the top and is detachably connected at the opening in a conventional manner. Figure 1 The box 1 is connected by multiple bolts 5. There is a sealing cover 4. A sealing gasket is fixedly connected to the sealing cover 4 at the part that contacts the opening of the box 1 to seal the inner cavity of the box 1. Four support legs 14 in a rectangular distribution are fixedly connected to the bottom of the box 1.

[0017] A partition 10 is horizontally fixed inside the housing 1, near the middle section, dividing the inner cavity of the housing 1 into an upper cavity and a lower cavity. An air inlet 2 is fixedly connected and communicates with one side of the lower cavity, located below the partition 10. The air inlet 2 is connected to the exhaust port of the slide valve vacuum pump. A pressure gauge 3 is conventionally connected to the air inlet 2; the air pressure reading indicates the blockage status of the filter element, facilitating timely replacement and cleaning. A drain outlet 12 is fixedly connected and communicates with the bottom of the other side of the lower cavity. A drain valve 11 is conventionally connected to the drain outlet 12; opening the drain valve 11 allows water and oil accumulated in the lower cavity to be drained into a dedicated oil collection basin or container. The lower chamber is filled with several multifaceted hollow spheres (the filling height of the multifaceted hollow spheres is higher than the height of the air inlet). The use of multifaceted hollow spheres can reduce the gas flow rate and play a certain role in adsorption and filtration, allowing most of the water vapor and oil mist to condense and accumulate in the lower chamber. The top of one side of the upper chamber is fixedly connected to and connected to a smoke exhaust port 8.

[0018] Two through holes are made on the partition plate 10, one at the top and one at the bottom, to connect the lower cavity to the interior of each filter element. A mounting ring 102 is fixedly connected to the top of each through hole. A cross plate 103 is fixedly connected to each mounting ring 102 by welding. An internal threaded hole is made in the center of the cross plate 103. One end of each screw 7 is screwed into the corresponding internal threaded hole, and the other end passes upward through the center hole of the corresponding filter element 9. A nut 6 is then put into the screw and tightened with the screw 7 to press the filter element 9 onto the partition plate 10.

[0019] When the filter element needs to be replaced during the use of this utility model, the bolts 5 on the sealing cover plate 4 can be removed to open the sealing cover plate 4. Then, the nut 6 on the screw can be loosened to remove the corresponding filter element 9 from the partition for replacement.

Claims

1. A slide valve vacuum pump oil mist treatment device, comprising a housing (1), characterized in that, The top of the box (1) is open and covered with a sealing cover (4); a partition (10) is provided inside the box (1) and the inner cavity of the box (1) is divided into an upper cavity and a lower cavity by the partition (10); the lower cavity is filled with a number of multi-faceted hollow spheres, and an air inlet (2) and a drain outlet (12) are connected on one side of the lower cavity, and a drain valve is provided in the drain outlet (12); a number of filter elements (9) are provided in the upper cavity, the bottom of the filter element (9) is placed on the upper part of the partition (10) and a through hole connected to the air inlet of each filter element (9) is opened on the partition (10); a smoke exhaust outlet (8) is opened on the box (1) corresponding to the upper cavity.

2. The slide valve vacuum pump oil mist treatment device according to claim 1, characterized in that, A mounting ring (102) is fixedly connected to the top of each through hole on the partition plate (10). A cross plate (103) is fixedly connected inside each mounting ring (102). An internal thread hole is opened in the center of each cross plate (103). A vertically arranged screw (7) is threaded into each internal thread hole. After each screw (7) passes through the middle of its corresponding filter element (9) upwards, a nut (6) is threaded into it.

3. The slide valve vacuum pump oil mist treatment device according to claim 1 or 2, characterized in that, A pressure gauge (3) is provided on the air inlet (2).

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