An oil-gas separator for screw air compressors

Abstract

This utility model discloses an oil-gas separator for a screw air compressor, belonging to the technical field of oil-gas separators. It includes an oil-gas separator housing and a filter structure arranged inside the housing for separating oil and gas. The oil-gas separator housing includes a conveying pipe placed inside for conveying oil and gas. In this utility model, the oil and gas delivered by the screw air compressor can be conveyed to the oil-gas separator housing through the conveying pipe and dispersed by a conical oil diffuser cap. The oil falls under gravity, while the gas rises under the guidance of a spiral guide vane. During this process, the gas passes through a filter plate and a filter pipe and is discharged from the exhaust pipe. The spiral guide vane adopts a spiral design, which increases the residence time of the gas in the oil-gas separator housing as it rises, allowing the gas to repeatedly pass through the filter plate for multiple filtrations, further improving the filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of oil-gas separator technology, specifically to an oil-gas separator for screw air compressors. Background Technology

[0002] The main function of the oil-gas separator in a screw air compressor is to separate crude oil and associated natural gas produced from oil wells, or to separate lubricating oil and water that are mixed with air after being compressed in the screw air compressor, thus ensuring the purity of the compressed air.

[0003] Chinese Patent Publication No. CN218816994U discloses an oil-gas separator for a screw air compressor, including a screw compressor main unit and a tank. A connecting bend is fixedly installed at one end of the screw compressor main unit, and a mixed liquid inlet pipe is provided through one side of the top of the tank. The outside of the mixed liquid inlet pipe is connected to the screw compressor main unit through the connecting bend. In use, the mixed liquid from the screw compressor main unit enters the tank through the mixed liquid inlet pipe. Since the mixed liquid inlet pipe is located directly above the top of the oil distribution cap, the mixed liquid is evenly distributed to the surface of the oil distribution cap when it is poured in, improving the oil-gas separation effect. In use, since the glass tube is interconnected with the tank, the liquid volume inside the tank can be observed in real time through the external glass tube.

[0004] In the aforementioned prior art, the oil-gas mixture is introduced into the tank and the oil-gas is dispersed using an oil-dispersing cap, thereby improving the oil-gas separation effect. Furthermore, the gas can be further filtered using a filter screen. However, after entering the tank, the gas rises rapidly and passes through the filter screen, resulting in a short residence time of the gas in the tank and insufficient contact time between the gas and the filter screen. This may lead to some impurities or particulate matter not being effectively intercepted. Utility Model Content

[0005] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide an oil-gas separator for screw air compressors to solve some or all of the problems in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An oil-gas separator for a screw air compressor, comprising:

[0008] Oil-gas separator housing;

[0009] The filter structure is arranged inside the oil-gas separator housing and is used to separate oil and gas.

[0010] A limiting structure is arranged on the oil-gas separator housing and used in conjunction with the filter structure to limit the position of the filter structure.

[0011] A sealing structure is arranged on the limiting structure to increase the sealing performance of the limiting structure.

[0012] Preferably, the oil-gas separator housing comprises:

[0013] The delivery pipe, located inside the oil-gas separator shell, is used to transport oil and gas;

[0014] The exhaust pipe is located on the oil-gas separator housing and is used to discharge oil and gas.

[0015] Preferably, the filter structure includes:

[0016] A conical oil diffuser cap is located directly below the delivery pipe;

[0017] Several support rods are arranged on the conical oil diffuser cap to support the conical oil diffuser cap;

[0018] A sealing cap, arranged on a support rod and movably sleeved on the oil-gas separator housing, is used to seal the oil-gas separator housing.

[0019] The guiding component, mounted on the support rod, is used to guide the flow of oil and gas.

[0020] Preferably, the guiding component includes:

[0021] The connecting sleeve is located at one end of the support rod and is movably sleeved on the conveying pipe;

[0022] Several filter plates are evenly arranged on the outer surface of the connecting sleeve and in contact with the inner wall of the oil-gas separator shell;

[0023] The spiral guide vane is arranged on the inner wall of the oil-gas separator housing and contacts the outer surface of the connecting sleeve. The spiral guide vane has a groove inside that is adapted to the filter plate.

[0024] Preferably, the filter structure further includes:

[0025] The filter tube is located on one side of the connecting housing;

[0026] A rubber pad is arranged on the inner wall of the oil-gas separator housing, and the filter tube is movably installed inside the rubber pad.

[0027] Preferably, the limiting structure includes:

[0028] The threaded collar is rotatably fitted on the outer surface of the oil-gas separator housing, and the threaded collar is threaded onto the sealing cover;

[0029] A positioning component, arranged on the threaded collar, is used to limit the position of the threaded collar.

[0030] Preferably, the positioning component includes:

[0031] An annular groove is formed inside the threaded collar;

[0032] The limiting ring is fixedly sleeved on the outer surface of the oil-gas separator housing, and the limiting ring is rotatably installed inside the annular groove.

[0033] Preferably, the sealing structure includes:

[0034] A sealing gasket is placed on the inner wall of the sealing cover and contacts the opening end of the oil-gas separator housing;

[0035] The sealing ring is arranged on the inner wall of the threaded collar;

[0036] Angled surface one is set on the sealing ring;

[0037] Sloping surface two is set on the sealing cover and is used to squeeze sloping surface one during movement.

[0038] The beneficial effects of this utility model are as follows:

[0039] In this invention, the oil and gas transported by the screw air compressor can be conveyed through the delivery pipe to the oil-gas separator housing, where the oil and gas are dispersed by a conical oil diffuser cap. The oil falls under the action of gravity, while the gas rises under the guidance of the spiral guide vane. During the process, the gas is filtered by the filter plate and filter pipe and discharged from the exhaust pipe. The spiral guide vane adopts a spiral design, which increases the residence time of the gas in the oil-gas separator housing when it rises, allowing the gas to repeatedly pass through the filter plate for multiple filtrations, further improving the filtration effect.

[0040] This invention allows the connection restriction on the sealing cap to be released by rotating the threaded collar. At this time, pulling the sealing cap will allow the conical oil diffuser cap and filter plate to be pulled out from the oil-gas separator housing, while exposing the spiral guide vanes inside the oil-gas separator housing, so as to clean the impurities attached to the filter plate and spiral guide vanes, and at the same time facilitate the cleaning of residual oil inside the sealing cap. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A schematic diagram of the structure of an oil-gas separator for a screw air compressor provided in this embodiment of the present invention;

[0043] Figure 2A cross-sectional structural schematic diagram of an oil-gas separator for a screw air compressor provided in an embodiment of this utility model;

[0044] Figure 3 A schematic diagram of the connecting sleeve structure of an oil-gas separator for a screw air compressor provided in an embodiment of this utility model;

[0045] Figure 4 A schematic diagram of the spiral guide vane structure of an oil-gas separator for a screw air compressor provided in this embodiment of the utility model;

[0046] Figure 5 A schematic diagram of the cross-sectional structure of the sealing cover of an oil-gas separator for a screw air compressor provided in this embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the connecting sleeve structure of an oil-gas separator for a screw air compressor, provided as an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Oil-gas separator housing; 101. Delivery pipe; 102. Exhaust pipe; 2. Conical oil diffuser cap; 201. Support rod; 202. Sealing cap; 203. Connecting sleeve; 204. Filter plate; 205. Spiral guide vane; 206. Filter pipe; 207. Rubber gasket; 3. Threaded collar; 301. Annular groove; 302. Limiting ring; 303. Sealing gasket; 304. Sealing ring; 305. Inclined surface one; 306. Inclined surface two. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] Example 1:

[0052] like Figures 1 to 6 As shown, this utility model provides an oil-gas separator for a screw air compressor, including: an oil-gas separator housing 1 and a filter structure arranged inside the oil-gas separator housing 1 for separating oil and gas.

[0053] The oil-gas separator housing 1 includes a conveying pipe 101 placed inside the oil-gas separator housing 1 for conveying oil and gas, and an exhaust pipe 102 arranged on the oil-gas separator housing 1 for discharging oil and gas. In use, the oil and gas pipeline of the screw air compressor can be connected to the conveying pipe 101 to convey oil and gas, and the filtered gas will be discharged through the exhaust pipe 102.

[0054] The filter structure includes a conical oil-dispersing cap 2 located directly below the conveying pipe 101, several support rods 201 arranged on the conical oil-dispersing cap 2 for supporting the conical oil-dispersing cap 2, a sealing cover 202 arranged on the support rods 201 and movably sleeved on the oil-gas separator housing 1 for sealing the oil-gas separator housing 1, and a guiding component arranged on the support rods 201 for guiding the flow of oil and gas. Oil and gas enter the oil-gas separator housing 1 through the conveying pipe 101 and come into contact with the conical oil-dispersing cap 2. The conical oil-dispersing cap 2 disperses the oil and gas, allowing the oil to slide from the conical oil-dispersing cap 2 into the sealing cover 202 under the action of gravity.

[0055] Specifically, the guiding component includes a connecting sleeve 203 arranged at one end of the support rod 201 and movably sleeved on the delivery pipe 101, several filter plates 204 evenly arranged on the outer surface of the connecting sleeve 203 and in contact with the inner wall of the oil-gas separator housing 1, and a spiral guide vane 205 arranged on the inner wall of the oil-gas separator housing 1 and in contact with the outer surface of the connecting sleeve 203. The spiral guide vane 205 has a groove inside that is adapted to the filter plates 204. The separated gas flows spirally upward under the guidance of the spiral guide vane 205 and passes through multiple filter plates 204 in the process. The filter plates 204 can filter out excess impurities in the gas.

[0056] The filter structure also includes a filter pipe 206 arranged on one side of the connecting sleeve 203 and a rubber pad 207 arranged on the inner wall of the oil-gas separator housing 1. The filter pipe 206 is movably installed inside the rubber pad 207. The filter pipe 206 can perform final filtration of the gas, further improving the filtration effect of the gas. By setting the rubber pad 207, the sealing between the filter pipe 206 and the inner wall of the oil-gas separator housing 1 can be ensured.

[0057] Example 2:

[0058] Based on Example 1, in order to improve the sealing performance of the sealing cover 202 during installation, a limiting structure for restricting the position of the filter structure is arranged on the oil-gas separator housing 1.

[0059] Specifically, the limiting structure includes a threaded collar 3 that is rotatably sleeved on the outer surface of the oil-gas separator housing 1. The threaded collar 3 is threaded onto the sealing cover 202. A positioning component is arranged on the threaded collar 3 to limit the position of the threaded collar 3. By rotating and screwing the threaded collar 3 onto the sealing cover 202, the position of the sealing cover 202 can be limited, preventing it from loosening from the oil-gas separator housing 1.

[0060] The positioning component includes an annular groove 301 formed inside the threaded collar 3 and a limiting ring 302 fixedly sleeved on the outer surface of the oil-gas separator housing 1. The limiting ring 302 is rotatably installed inside the annular groove 301. The rotating threaded collar 3 can rotate on the limiting ring 302 through the annular groove 301, thereby preventing the threaded collar 3 from shifting position during rotation.

[0061] Example 3:

[0062] To improve the sealing performance of the limiting structure, a sealing structure is arranged on the limiting structure to enhance its sealing performance.

[0063] Specifically, the sealing structure includes a sealing gasket 303 arranged on the inner wall of the sealing cover 202 and in contact with the opening end of the oil-gas separator housing 1, a sealing ring 304 arranged on the inner wall of the threaded collar 3, a first inclined surface 305 arranged on the sealing ring 304, and a second inclined surface 306 arranged on the sealing cover 202 for pressing the first inclined surface 305 during movement. After the sealing cover 202 is inserted into the threaded collar 3, the threaded collar 3 can be rotated in the opposite direction to reset the sealing cover 202. During the movement, the sealing cover 202 will drive the sealing gasket 303 to re-adhere to the end face of the oil-gas separator housing 1.

[0064] At the same time, the sealing cover 202 will squeeze the sealing ring 304, so that the sealing ring 304 is tightly attached to the oil-gas separator housing 1 and the sealing cover 202, thereby achieving a sealing effect.

[0065] Working principle: In use, the oil-gas pipeline of the screw air compressor can be connected to the delivery pipe 101, allowing the oil and gas to enter the oil-gas separator housing 1 through the delivery pipe 101 and come into contact with the conical oil diffuser cap 2. The conical oil diffuser cap 2 disperses the oil and gas, causing the oil to slide down from the conical oil diffuser cap 2 into the sealing cover 202 under the action of gravity, while the gas flows spirally upward under the guidance of the spiral guide vane 205. During this process, it passes through multiple filter plates 204, which filter out many impurities in the gas. The remaining impurities are removed, and the final gas will pass through the filter pipe 206 for final filtration and then be discharged through the exhaust pipe 102. When it is necessary to clean the impurities on the filter plate 204 or the oil in the sealing cover 202, the threaded collar 3 can be rotated. As the threaded collar 3 rotates, it can move the sealing cover 202 through the threaded engagement with the sealing cover 202, so that the sealing cover 202 slowly loosens from the threaded collar 3 and the oil-gas separator housing 1. During the movement of the sealing cover 202, the sealing gasket 303 will be disengaged from the oil-gas separator housing 1 and from the sealing ring 304. At this time, continuously pulling the sealing cover 202 will move the support rod 201, which will move the conical oil diffuser cap 2 and the connecting sleeve 203, thereby allowing the filter plate 204 and filter pipe 206 to be pulled out of the oil-gas separator housing 1 for cleaning the impurities attached to their surfaces. After cleaning, when installing, the filter plate 204 can be aligned with the slot on the spiral guide plate 205 and inserted, while the filter pipe 206 is aligned with the slot on the spiral guide plate 205. After tightening the rubber gasket 207 and inserting the sealing cap 202 into the threaded collar 3, the threaded collar 3 can be rotated in the opposite direction to move the sealing cap 202 back to its original position. During the movement, the sealing cap 202 will cause the sealing gasket 303 to re-adhere to the end face of the oil-gas separator housing 1. At the same time, the sealing cap 202 will cause the inclined surface 2 306 to press the inclined surface 1 305 on the sealing ring 304, so that the sealing ring 304 is compressed and adheres tightly to the oil-gas separator housing 1 and the sealing cap 202, thereby improving the sealing effect on the oil-gas separator housing 1.

[0066] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An oil-gas separator for a screw air compressor, characterized in that, include: Oil-gas separator housing (1); A filter structure is arranged inside the oil-gas separator housing (1) for separating oil and gas; A limiting structure is arranged on the oil-gas separator housing (1) and used in conjunction with the filter structure to limit the position of the filter structure; A sealing structure is arranged on the limiting structure to increase the sealing performance of the limiting structure; The filtering structure includes: A conical oil diffuser cap (2) is located directly below the delivery pipe (101); Several support rods (201) are arranged on the conical oil diffuser cap (2) to support the conical oil diffuser cap (2). A sealing cap (202) is arranged on a support rod (201) and movably sleeved on the oil-gas separator housing (1) for sealing the oil-gas separator housing (1).

2. The oil-gas separator for a screw air compressor as described in claim 1, characterized in that, The oil-gas separator housing (1) includes: The delivery pipe (101) is arranged inside the oil-gas separator housing (1) and is used to deliver oil and gas; An exhaust pipe (102) is arranged on the oil-gas separator housing (1) for discharging oil and gas.

3. The oil-gas separator for a screw air compressor as described in claim 1, characterized in that, The filter structure also includes a guide component arranged on the support rod (201) for guiding the flow of oil and gas.

4. The oil-gas separator for a screw air compressor as described in claim 3, characterized in that, The boot component includes: The connecting sleeve (203) is arranged at one end of the support rod (201) and movably sleeved on the conveying pipe (101); Several filter plates (204) are evenly arranged on the outer surface of the connecting sleeve (203) and in contact with the inner wall of the oil-gas separator housing (1); The spiral guide vane (205) is arranged on the inner wall of the oil-gas separator housing (1) and in contact with the outer surface of the connecting sleeve (203). The spiral guide vane (205) has a groove inside that is compatible with the filter plate (204).

5. The oil-gas separator for a screw air compressor as described in claim 1, characterized in that, The filtering structure further includes: The filter tube (206) is arranged on one side of the connecting sleeve (203); A rubber pad (207) is arranged on the inner wall of the oil-gas separator housing (1), and the filter tube (206) is movably installed inside the rubber pad (207).

6. The oil-gas separator for a screw air compressor as described in claim 1, characterized in that, The limiting structure includes: The threaded collar (3) is rotated and fitted on the outer surface of the oil-gas separator housing (1), and the threaded collar (3) is threaded on the sealing cover (202).

7. The oil-gas separator for a screw air compressor as described in claim 1, characterized in that, The limiting structure also includes a positioning component arranged on the threaded collar (3) for limiting the position of the threaded collar (3).

8. The oil-gas separator for a screw air compressor as described in claim 7, characterized in that, The positioning component includes: An annular groove (301) is formed inside the threaded collar (3); The limiting ring (302) is fixedly sleeved on the outer surface of the oil-gas separator housing (1), and the limiting ring (302) is rotatably installed inside the annular groove (301).

9. An oil-gas separator for a screw air compressor as described in claim 8, characterized in that, The sealing structure includes: A sealing gasket (303) is arranged on the inner wall of the sealing cover (202) and in contact with the opening end of the oil-gas separator housing (1); A sealing ring (304) is arranged on the inner wall of the threaded collar (3); Inclined surface 1 (305) is set on sealing ring (304); Inclined surface two (306) is provided on the sealing cover (202) for pressing inclined surface one (305) during movement.

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