Anti-corrosion vacuum pump end cover

Abstract

The anti-corrosion vacuum pump end cover comprises a pump body and an air inlet, the pump body is located on the upper side of the air inlet and fixedly connected with a connecting pipe, an air inlet pipe is integrally formed at the upper end of the connecting pipe through casting, a contact pipe is inserted into the air inlet pipe, spraying holes are evenly and fixedly connected to the bottom side of the air inlet pipe, and a storage frame is arranged in the connecting pipe. A water body is arranged in the storage frame, a filter plate is evenly and fixedly connected to one side of the storage frame, two partition nets are fixedly connected in the storage frame, the spray holes are located in the bottom sides of the partition nets, a limiting frame is fixedly connected to one side of the storage frame, spring thimbles make contact with the bottom side of the limiting frame, and the fixed ends of the spring thimbles are located on one side of the contact pipe. The contact pipe is installed at the air inlet pipe of the pump body to be matched with the storage frame, the contact pipe is convenient to replace, and then water is added into the storage frame to be matched with the filter plate to adsorb impurities in entering air, so that corrosion of the air inlet port is reduced, and the service life of the end cover of the pump body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to an anti-corrosion end cover of a vacuum pump. Background Art

[0002] During the production and operation of the water ring vacuum pump, the suction and exhaust ports of the vacuum pump end cover are susceptible to severe corrosion, cavitation, and erosion, which greatly shortens the normal use period of the original castings, leading to frequent replacements.

[0003] According to the Chinese patent publication number CN212731571U, "A vacuum pump with good anti-corrosion effect", it mainly describes that by setting up an exhaust gas purification mechanism, when vacuuming, the exhaust pipe is connected to the container to be evacuated, and the suction force emitted by the vacuum pump body sucks out the air. The sucked air first passes through the filter screen to filter out the large particles of solid matter contained in the air. Since the air intake port is in the middle, under the movable connection of the rotating shaft, the suction force drives the rotating plate to rotate continuously, and the activated carbon adsorption shop set on its surface can adsorb small particles of impurities. The gas passes through the catalytic pad, acid pad, etc. in turn. The neutralizing pad and alkaline neutralizing pad can filter the acid and alkali elements contained in the gas, thereby ensuring that the gas entering the vacuum pump body is not corrosive. The vacuum pump with good anti-corrosion effect can pre-screen and filter the fixed impurities and acid and alkali elements of the inhaled gas during the vacuum pumping process, thereby ensuring the purity of the gas entering the vacuum pump, avoiding long-term corrosion inside the vacuum pump, and extending the service life. In this process, the multi-layer gas processing pad body will block the exhaust port of the pump body, resulting in excessive suction pressure of the pump body and reducing the life of the pump body.

[0004] Therefore, an anti-corrosion vacuum pump end cover is proposed to solve the problem that during this process, the multi-layer gas treatment pad will shield the pump port of the pump body, thereby causing excessive suction pressure of the pump body and reducing the life of the pump body. Utility Model Content

[0005] The utility model aims to solve the technical problem that adding a multi-layer cushion body at the air extraction end of the pump body to absorb impurities in the gas will lead to poor adsorption of the pump body, so an anti-corrosion vacuum pump end cover is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: an anti-corrosion vacuum pump end cover, including a pump body and an air inlet, the pump body is fixedly connected to a connecting pipe on the upper side of the air inlet, the upper end of the connecting pipe is integrally formed with an air inlet pipe by casting, a contact pipe is inserted in the air inlet pipe, the bottom side of the air inlet pipe is evenly fixedly connected with a spray hole, a storage frame is arranged in the connecting pipe, water is arranged in the storage frame, and a filter plate is evenly fixedly connected to one side of the storage frame.

[0007] As a preferred technical solution of the utility model, two partition nets are fixedly connected in the storage frame, and the spray holes are located at the bottom of the partition nets, and the bubbles are refined by setting the partition nets.

[0008] As a preferred technical solution of the utility model, one side of the storage frame is fixedly connected to a limiting frame, the bottom side of the limiting frame contacts with a spring ejector, and the fixed end of the spring ejector is located on one side of the contact tube. By arranging the spring ejector and the limiting frame, it is convenient to fix the contact frame.

[0009] As a preferred technical solution of the utility model, a sealing plate is fixedly connected to one side of the storage frame, a positioning rod is inserted on the sealing plate, and the positioning rod is threadedly connected to the connecting pipe. By providing the sealing plate and the positioning rod, replacement can be facilitated.

[0010] As a preferred technical solution of the utility model, an annular depression is opened in the air intake pipe, an annular protrusion is fixedly connected to the upper side of the contact tube and a sealing gasket is contacted on the bottom side of the annular protrusion. The sealing gasket is located in the annular depression. By arranging the sealing gasket, the sealing effect is increased.

[0011] The utility model has the following advantages: by installing a contact tube in combination with a storage frame at the air inlet pipe of the pump body, the contact tube is easy to replace, and then water is added in the storage frame to cooperate with a filter plate to adsorb impurities in the incoming air, thereby reducing corrosion of the air inlet port and increasing the service life of the pump body end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a side cross-sectional structure of an anti-corrosion vacuum pump end cover according to a preferred embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of a storage frame of a corrosion-resistant vacuum pump end cover according to a preferred embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the enlarged structure of point A of an anti-corrosion vacuum pump end cover in a preferred embodiment of the utility model.

[0015] Explanation of the accompanying reference numerals: 1. Pump body; 2. Air inlet; 3. Connecting pipe; 4. Air inlet pipe; 5. Contact pipe; 6. Spray hole; 7. Storage frame; 8. Filter plate; 9. Partition net; 10. Limiting frame; 11. Spring ejector pin; 12. Closing plate; 13. Positioning rod; 14. Sealing gasket. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3The corrosion-resistant vacuum pump end cover shown includes a pump body 1 and an air inlet 2. The pump body 1 is located on the upper side of the air inlet 2 and is fixedly connected to a connecting pipe 3. When the pump body 1 is started, air begins to be taken in at the air inlet 2. An air inlet pipe 4 is integrally formed at the upper end of the connecting pipe 3 by casting. A contact pipe 5 is inserted in the air inlet pipe 4. A spray hole 6 is evenly and fixedly connected to the bottom side of the air inlet pipe 4. A storage frame 7 is provided in the connecting pipe 3. Water is provided in the storage frame 7. The water can absorb impurities. A filter plate 8 is evenly and fixedly connected to one side of the storage frame 7. The interior of the filter plate 8 is mesh-shaped. Impurities and water vapor are further absorbed when air enters.

[0018] Among them, a spray hole 6 is set on the bottom side of the partition net 9, and the spray hole 6 is located on the bottom side of the contact tube 5. The partition net 9 is fixedly connected to both sides of the storage frame 7. By setting the partition net 9 in the storage frame 7 and opening the spray hole 6 on the bottom side of the contact tube 5, the incoming gas can be refined multiple times, thereby improving the adsorption efficiency of the water body.

[0019] Among them, a spring pin 11 is inserted into one side of the contact tube 5, and the spring pin 11 contacts the limit frame 10. The limit frame 10 is fixedly connected to one side of the storage frame 7. By installing the spring pin 11 on one side of the contact tube 5 and cooperating with the limit frame 10, the contact tube 5 can be limited on the bottom side of the contact tube 5, thereby improving the stability of the contact tube 5 and facilitating replacement when the contact tube 5 is corroded.

[0020] The connecting pipe 3 is threadedly connected to the positioning rod 13, the positioning rod 13 is plugged into the sealing plate 12, and the sealing plate 12 is fixedly connected to one side of the storage frame 7. By setting the positioning rod 13, the sealing plate 12 and the storage frame 7 can be removed by disassembly.

[0021] Among them, a sealing gasket 14 is arranged in the annular recess, the sealing gasket 14 contacts the annular protrusion, the annular protrusion is fixedly connected to the upper side of the contact tube 5, and the annular recess is located inside the upper side of the intake pipe 4. By arranging the sealing gasket 14, the sealing between the intake pipe 4 and the contact tube 5 can be increased, and at the same time, the contact tube 5 can be easily disassembled.

[0022] Working principle: by setting the connecting pipe 3 and the air inlet pipe 4 at the air inlet 2 on both sides of the pump body 1, and then first insert the storage frame 7 into the moving connecting pipe 3, and then insert the contact pipe 5 into the air inlet pipe 4, and then the spring ejector 11 contacts the bottom side of the limit frame 10 to form a limit, and then the positioning rod 13 is used to plug the sealing plate 12 and fix it. At this time, the pump body 1 is started so that the connecting pipe 3 and the air inlet pipe 4 are in a negative pressure state, and the air is drawn into the connecting pipe 3 through the spray hole 6 and the partition net 9, and then the purified air after passing through the filter plate 8 enters the air inlet 2, which reduces the corrosion of the inner wall of the air inlet pipe 4, and also makes it easy to replace the contact pipe 5.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A corrosion-resistant vacuum pump end cover, comprising a pump body (1) and an air inlet (2), characterized in that: The pump body (1) is fixedly connected to a connecting pipe (3) located on the upper side of the air inlet (2); an air inlet pipe (4) is integrally formed at the upper end of the connecting pipe (3) by casting; a contact pipe (5) is inserted into the air inlet pipe (4); a spray hole (6) is evenly fixedly connected to the bottom side of the air inlet pipe (4); a storage frame (7) is arranged in the connecting pipe (3); water is arranged in the storage frame (7); and a filter plate (8) is evenly fixedly connected to one side of the storage frame (7).

2. The corrosion-resistant vacuum pump end cover according to claim 1, characterized in that: Two partition nets (9) are fixedly connected inside the storage frame (7), and the spray hole (6) is located at the bottom side of the partition nets (9).

3. The corrosion-resistant vacuum pump end cover according to claim 2, characterized in that: One side of the storage frame (7) is fixedly connected to a limit frame (10), the bottom side of the limit frame (10) is in contact with a spring ejector pin (11), and the fixed end of the spring ejector pin (11) is located on one side of the contact tube (5).

4. The corrosion-resistant vacuum pump end cover according to claim 3, characterized in that: A sealing plate (12) is fixedly connected to one side of the storage frame (7), a positioning rod (13) is inserted into the sealing plate (12), and the positioning rod (13) is threadedly connected to the connecting pipe (3).

5. The corrosion-resistant vacuum pump end cover according to claim 1, characterized in that: An annular recess is provided in the air intake pipe (4), an annular protrusion is fixedly connected to the upper side of the contact pipe (5), and a sealing gasket (14) is in contact with the bottom side of the annular protrusion, and the sealing gasket (14) is located in the annular recess.

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