Oil-gas separator of oil lubrication vacuum pump

Abstract

The oil-gas separator of the oil lubrication vacuum pump comprises a barrel body, an inner cavity of the barrel body is vertically divided into a fine separation cavity and a coarse separation cavity through a partition plate, and a through hole used for communicating the fine separation cavity with the coarse separation cavity is formed in the partition plate; an air inlet pipe communicated with the coarse separation cavity is arranged at the upper part of the side wall of the coarse separation cavity, and an oil outlet joint and a pollution discharge joint which are communicated with the coarse separation cavity are arranged at the lower part of the side wall of the coarse separation cavity; an oil-gas separation filter element is arranged in the fine separation cavity, and an exhaust pipe communicated with a gas outlet of the oil-gas separation filter element is arranged above the oil-gas separation filter element; oil-gas mixed gas is subjected to primary collision separation in the coarse separation cavity, then enters the fine separation cavity and is further subjected to oil-gas separation through the oil-gas separation filter element, the oil-gas separation effect is improved, and meanwhile the service life of the oil-gas separation filter element can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to an oil-gas separator for an oil-lubricated vacuum pump. Background Art

[0002] In the use of oil-lubricated vacuum pumps, lubricating oil plays a vital role. Lubricating oil will mix with air in the vacuum pump mainframe to form an oil-gas mixture, which will be discharged from the vacuum pump mainframe and separated from the lubricating oil and air in the oil-gas separator; the separated lubricating oil will enter the vacuum pump mainframe again for recycling after cooling and filtering, and the separated gas will be discharged from the vacuum pump. Most existing oil-lubricated vacuum pumps use oil-gas separators with conventional structures to directly separate the oil-gas mixture through the filter element. The separation effect is average and the filter element is easily blocked. The filter element needs to be frequently replaced or maintained, which is time-consuming and labor-intensive, affecting production efficiency while also increasing labor costs. Utility Model Content

[0003] In view of this, an embodiment of the utility model provides an oil-lubricated vacuum pump oil-gas separator to solve the technical problems that the existing oil-gas separator has a general separation effect and is prone to filter element clogging.

[0004] The utility model provides an oil-lubricated vacuum pump oil-gas separator, comprising a barrel, wherein the inner cavity of the barrel is divided into a fine separation chamber and a coarse separation chamber by a partition plate, and a through hole for connecting the fine separation chamber and the coarse separation chamber is provided on the partition plate;

[0005] An air inlet pipe is arranged at the upper part of the side wall of the rough separation chamber, and the air inlet pipe extends horizontally into the rough separation chamber and is connected with the rough separation chamber; an oil outlet joint and a sewage discharge joint connected with the rough separation chamber are arranged at the lower part of the side wall of the rough separation chamber, and the position of the oil outlet joint is higher than the position of the sewage discharge joint;

[0006] An oil-gas separation filter element is provided in the fine separation chamber, a sealing cover plate is provided on the top of the fine separation chamber, an opening for inserting the oil-gas separation filter element is provided on the sealing cover plate, and a mounting flange detachably connected to the sealing cover plate is provided on the top of the oil-gas separation filter element; an exhaust pipe connected to the air outlet of the oil-gas separation filter element is provided above the oil-gas separation filter element, and an exhaust pipe flange cover detachably connected to the sealing cover plate is provided at the bottom end of the exhaust pipe.

[0007] Optionally, a refueling connector is provided on the side wall of the coarse separation chamber, one end of the refueling connector is connected to the coarse separation chamber, and the other end of the refueling connector is arranged to be inclined upward; the position of the refueling connector is higher than the position of the oil outlet connector and lower than the position of the intake pipe.

[0008] Optionally, an oil level mirror joint for mounting an oil level mirror is provided on the side wall of the coarse separation chamber, and the position of the oil level mirror joint is higher than the position of the oil outlet joint and lower than the position of the refueling joint.

[0009] Optionally, a safety valve connecting pipe is provided on the side wall of the fine separation chamber, one end of the safety valve connecting pipe is connected to the fine separation chamber, and the other end of the safety valve connecting pipe is bent upward and provided with a connecting thread for connecting to the safety valve.

[0010] The embodiments of the present utility model have the following beneficial effects:

[0011] 1. The inner cavity of the barrel is divided into a fine separation chamber and a coarse separation chamber by a partition. The oil-gas mixture can undergo preliminary collision separation in the coarse separation chamber, and then enter the fine separation chamber for further oil-gas separation through the oil-gas separation filter element, which effectively improves the oil-gas separation effect and also prolongs the service life of the oil-gas separation filter element;

[0012] 2. An opening is set on the sealing cover plate at the top of the fine separation chamber. The oil-gas separation filter element can be directly inserted into the fine separation chamber from the opening and detachably connected to the sealing cover plate through the mounting flange at the top thereof, which is convenient for disassembly and assembly and maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0016] The numbers in the figure represent:

[0017] 1. Barrel body; 2. Partition; 3. Coarse separation chamber; 4. Fine separation chamber; 5. Through hole; 6. Inlet pipe; 7. Oil-gas separation filter element; 8. Exhaust pipe; 9. Oil outlet connector; 10. Drain connector; 11. Sealing cover plate; 12. Mounting flange; 13. Exhaust pipe flange cover; 14. Refueling connector; 15. Oil level mirror connector; 16. Safety valve connector. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0019] See also Figure 1 , Figure 2 As shown, an embodiment of the utility model provides an oil-lubricated vacuum pump oil-gas separator, including a barrel body 1, the inner cavity of the barrel body 1 is divided into a fine separation chamber 4 and a coarse separation chamber 3 by a partition 2, and a through hole 5 for connecting the fine separation chamber 4 and the coarse separation chamber 3 is opened on the partition 2.

[0020] An air inlet pipe 6 is provided at the upper part of the side wall of the rough separation chamber 3. The air inlet pipe 6 extends horizontally through the rough separation chamber 3 and is connected to the rough separation chamber 3. The oil-gas mixture to be separated can enter the rough separation chamber 3 through the air inlet pipe 6 and collide with the inner wall of the rough separation chamber 3 to perform preliminary oil-gas separation. An oil-gas separation filter element 7 is provided in the fine separation chamber 4. An exhaust pipe 8 connected to the gas outlet of the oil-gas separation filter element 7 is provided above the oil-gas separation filter element 7. The oil-gas mixture after preliminary oil-gas separation in the rough separation chamber 3 can enter the fine separation chamber 4 through the through hole 5 and further oil-gas separation is performed through the oil-gas separation filter element 7. The relatively clean gas obtained after separation can be discharged through the exhaust pipe 8.

[0021] An oil outlet joint 9 and a sewage discharge joint 10 connected to the coarse separation chamber 3 are arranged at the lower part of the side wall of the coarse separation chamber 3, and the position of the oil outlet joint 9 is higher than that of the sewage discharge joint 10; the lubricating oil separated in the coarse separation chamber 3 can gradually gather at the bottom of the coarse separation chamber 3, among which the relatively clean lubricating oil in the upper layer can flow back to the vacuum pump main unit through the oil outlet joint 9 for recycling, and the waste oil and condensed water precipitated at the bottom layer can be discharged through the sewage discharge joint 10.

[0022] A sealing cover plate 11 is provided at the top of the fine separation chamber 4, and an opening is provided on the sealing cover plate 11 for inserting the oil-gas separation filter element 7. The oil-gas separation filter element 7 can be directly inserted into the fine separation chamber 4 from the opening and detachably connected to the sealing cover plate 11 through the mounting flange 12 at the top thereof, so that it is easy to disassemble and assemble. An exhaust pipe flange cover 13 detachably connected to the sealing cover plate 11 is provided at the bottom end of the exhaust pipe 8, and the oil-gas separation filter element 7 can be maintained or replaced by removing the exhaust pipe 8.

[0023] Furthermore, a refueling connector 14 is provided on the side wall of the coarse separation chamber 3, one end of the refueling connector 14 is connected to the coarse separation chamber 3, and the other end of the refueling connector 14 is inclined upward; the position of the refueling connector 14 is higher than the position of the oil outlet connector 9 and lower than the position of the air intake pipe 6, and lubricating oil can be added to the coarse separation chamber 3 through the refueling connector 14 to avoid too little lubricating oil to meet the normal use of the vacuum pump main unit.

[0024] An oil level mirror joint 15 for mounting an oil level mirror is also provided on the side wall of the coarse separation chamber 3 . The position of the oil level mirror joint 15 is higher than the oil outlet joint 9 and lower than the refueling joint 14 , so as to facilitate observation of the oil level in the coarse separation chamber 3 .

[0025] In addition, a safety valve pipe 16 is provided on the side wall of the fine separation chamber 4, one end of the safety valve pipe 16 is connected to the fine separation chamber 4, and the other end of the safety valve pipe 16 is bent upward and provided with a connecting thread for connecting with the safety valve to avoid danger.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil-lubricated vacuum pump oil-gas separator, characterized in that: It comprises a barrel body, the inner cavity of the barrel body is divided into a fine separation chamber and a coarse separation chamber by a partition plate, and the partition plate is provided with a through hole for connecting the fine separation chamber and the coarse separation chamber; An air inlet pipe is arranged at the upper part of the side wall of the rough separation chamber, and the air inlet pipe extends horizontally into the rough separation chamber and is connected with the rough separation chamber; an oil outlet joint and a sewage discharge joint connected with the rough separation chamber are arranged at the lower part of the side wall of the rough separation chamber, and the position of the oil outlet joint is higher than the position of the sewage discharge joint; An oil-gas separation filter element is provided in the fine separation chamber, a sealing cover plate is provided on the top of the fine separation chamber, an opening for inserting the oil-gas separation filter element is provided on the sealing cover plate, and a mounting flange detachably connected to the sealing cover plate is provided on the top of the oil-gas separation filter element; an exhaust pipe connected to the air outlet of the oil-gas separation filter element is provided above the oil-gas separation filter element, and an exhaust pipe flange cover detachably connected to the sealing cover plate is provided at the bottom end of the exhaust pipe.

2. The oil-lubricated vacuum pump oil-gas separator according to claim 1, characterized in that: A refueling connector is provided on the side wall of the rough separation chamber, one end of which is connected to the rough separation chamber, and the other end of which is inclined upward; the position of the refueling connector is higher than the position of the oil outlet connector and lower than the position of the air intake pipe.

3. The oil-gas separator for an oil-lubricated vacuum pump according to claim 2, characterized in that: An oil level mirror joint for mounting an oil level mirror is arranged on the side wall of the coarse separation chamber, and the position of the oil level mirror joint is higher than the position of the oil outlet joint and lower than the position of the refueling joint.

4. The oil-gas separator for an oil-lubricated vacuum pump according to claim 1, characterized in that: A safety valve connecting pipe is arranged on the side wall of the fine separation chamber, one end of the safety valve connecting pipe is communicated with the fine separation chamber, and the other end of the safety valve connecting pipe is bent upward and provided with a connecting thread for connecting with the safety valve.

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