Exhaust filter element of oil type vacuum pump

Abstract

The utility model discloses an exhaust filter element of an oil type vacuum pump, which relates to the technical field of exhaust filter elements and comprises a base, and the upper end of the base is fixedly connected with a filter element main body through a conductive sealant material; the top end of the filter element main body is fixedly connected with the top cover through a conductive sealant material; according to the utility model, the conductor rear cover and the silencing filter material are connected with the bottom conductive sealant material through the rear cover electric sealant material, the connecting conductor also plays a role in connection, and when maintenance or replacement is needed, the whole vacuum pump is directly detached and taken out from the exhaust port of the vacuum pump, so that the cleaning efficiency is greatly improved, and the maintenance cost is reduced at the same time; the working efficiency is improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of exhaust filters, and specifically is an oil-type vacuum pump exhaust filter. Background Technique

[0002] The oil-type vacuum pump exhaust filter is a filtering device applied to the exhaust port of the vacuum pump to achieve water-gas separation, oil-gas separation, gas and other medium separation, so as to ensure that the gas discharged by the vacuum pump is clean gas.

[0003] The existing oil-type vacuum pump exhaust filters cannot effectively filter gases with water vapor, dust gases and gases containing oil stains, and the noise elimination effect on the vacuum pump is not ideal. The existing oil-type vacuum pump exhaust filters are prone to generate high-voltage static electricity and cannot eliminate it, posing a fire safety hazard. The structural feature of the oil-type vacuum pump exhaust filter is integral, which is convenient for maintenance, especially has good separation effect, and can effectively filter the gas discharged by the vacuum pump and eliminate the high-voltage static electricity on the exhaust filter.

[0004] Chinese Patent Publication No. CN 205042286 U discloses a filter element for the exhaust port of a vacuum pump, which has a sandwich filter rack connected between an annular upper end cover and an annular lower end cover. A layer of oil-gas separation filter element is filled in the sandwich filter rack, a cylindrical filter chamber is formed in the middle hole between the upper and lower end covers, an intake air and oil return joint is arranged outside the middle hole of the upper end cover, a sealing ring is arranged on the outer wall at the joint of the intake air and oil return joint and the upper end cover, and a pressure relief valve extending downward is installed in the middle hole of the lower end cover. The utility model has a simple and reasonable structure, which can not only improve the cleanliness of the gas discharged from the exhaust port, reduce environmental pollution, but also reduce the oil filling amount, extend the service life of the vacuum pump, and reduce the use and maintenance costs.

[0005] For the above-mentioned filter element for the exhaust port of the vacuum pump, when the filter element needs to be maintained and cleaned, due to the inconvenient disassembly, it will consume a lot of time and energy, and at the same time increase the maintenance risk, and even cause safety accidents. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an oil-type vacuum pump exhaust filter. First, the base is installed and fixed with the filter element main body, and then the top cover is connected with the filter element main body. The installation of the oil-type vacuum pump exhaust filter is completed, which is convenient for disassembly and installation, so as to solve the technical problems proposed in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An oil-type vacuum pump exhaust filter, comprising

[0009] A base, the upper end of the base is hermetically and fixedly connected to the filter element main body through a conductive sealant material; the top end of the filter element main body is hermetically and fixedly connected to the top cover through a conductive sealant material.

[0010] The base includes a conductor rear cover, two connecting conductors are symmetrically arranged on the outer side of the upper end of the conductor rear cover, and a rear cover conductive sealant material is provided on the inner wall of the top end.

[0011] As a further technical solution of the present invention, the rear cover conductive sealant material is connected to the bottom conductive sealant material. The bottom conductive sealant material is arranged at the bottom end of the sound-absorbing filter material. A filter material outer fixing bracket is arranged inside the sound-absorbing filter material, and the filter material outer fixing bracket contains a filter material.

[0012] As a further technical solution of the present invention, the two connecting conductors sequentially connect the conductor rear cover, the sound-absorbing filter material, the filter material outer fixing bracket, the filter material, and the filter material inner fixing bracket.

[0013] As a further technical solution of the present invention, a filter material inner fixing bracket is further arranged inside the filter material; a top conductive sealant material is further arranged at the top end of the sound-absorbing filter material.

[0014] As a further technical solution of the present invention, the top conductive sealant material is connected to the front cover. The upper surface and the bottom end of the conductor front cover are respectively provided with a top conductive sealant and a sealing ring arranged in a ring shape. A one-way valve seat is arranged at the bottom end of the top conductive sealant, a spring is arranged inside the one-way valve seat, and the top end of the spring is connected to the one-way valve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the present utility model, when installing a vacuum pump, the conductor front cover is docked with the exhaust port of the vacuum pump, and the sealing ring on the upper surface of the conductor front cover is docked with the exhaust port of the vacuum pump to achieve a sealing effect, ensuring the sealing between the exhaust filter element and the vacuum pump, preventing the leakage of high-pressure gas or liquid inside, and maintaining the pressure in the container; the center position at the bottom of the conductor rear cover serves as a squeezing and fixing point, playing a role in squeezing and fixing; in the present utility model, when in use, the mixed gas discharged by the vacuum pump pushes open the check valve, enters the filter element, passes through the fixed bracket inside the filter material, filters and separates the mixture in the gas, and the separated gas passes through the fixed bracket outside the filter material and the sound-absorbing filter material and then is discharged into the atmosphere. The multi-layer filter material has a good separation effect, and the sound-absorbing filter material effectively reduces the noise of the vacuum pump; in the present utility model, the separated vacuum pump oil returns to the fuel tank after passing through the fixed bracket inside the filter material, the filter material, the fixed bracket outside the filter material and the sound-absorbing filter material inside the exhaust filter element, achieving recycling; the separated sundries remain inside the fixed bracket and the filter material of the filter material, extending the service life of the vacuum pump, preventing the sundries from returning to the fuel tank along with the vacuum pump oil and affecting each component of the vacuum pump; in the present utility model, the conductor rear cover and the sound-absorbing filter material are connected by the conductive sealant at the rear cover and the bottom, and the connecting conductor also plays a connecting role; the conductor front cover and the sound-absorbing filter material are connected by the conductive sealant at the front cover. When it is necessary to disassemble and replace the exhaust filter element, only the fixing screw at the center point of the 11-conductor rear cover needs to be loosened, and without complex tools and cumbersome operations, rapid disassembly can be achieved, greatly improving the cleaning efficiency, reducing the maintenance cost at the same time, and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0018] Figure 2 In the present utility model Figure 1 is a bottom view.

[0019] Figure 3 In the present utility model Figure 1 is a partial structural schematic diagram.

[0020] Figure 4 In the present utility model Figure 3 is a partial structural schematic diagram.

[0021] Figure 5 In the present utility model Figure 4 is a partial enlarged schematic diagram.

[0022] In the figure: 1 - base, 2 - filter element main body, 3 - top cover;

[0023] 11 - conductor rear cover, 12 - connecting conductor, 13 - conductive sealant material at the rear cover;

[0024] 21 - Bottom conductive sealant material, 22 - Sound-absorbing filter material, 23 - Outer fixing bracket for filter material, 24 - Filter material, 25 - Inner fixing bracket for filter material, 26 - Top conductive sealant material;

[0025] 31 - Conductor front cover, 32 - Front cover, 33 - Top conductive sealant, 34 - Check valve seat, 35 - Spring, 36 - Check valve, 37 - Sealing ring. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-5 , in the embodiment of the present invention, an oil-type vacuum pump exhaust filter element includes a base 1, and the upper end of the base 1 is hermetically fixed to the filter element main body 2 through a conductive sealant material; the top end of the filter element main body 2 is hermetically fixed to the top cover 3 through a conductive sealant material;

[0028] The base 1 includes a conductor rear cover 11, two connecting conductors 12 are symmetrically arranged on the outer side of the upper end of the conductor rear cover 11, and a rear cover conductive sealant material 13 is arranged on the inner wall of the top end.

[0029] By adopting the above technical solutions, when installing the vacuum pump, the conductor front cover 31 is docked with the vacuum pump exhaust port, and the sealing ring 37 on the upper surface of the conductor front cover 31 is docked with the vacuum pump exhaust port to achieve a sealing effect, ensuring the sealing between the exhaust filter element and the vacuum pump, preventing the leakage of high-pressure gas or liquid inside, and maintaining the pressure in the container; the bottom center position of the conductor rear cover 11 serves as a squeezing and fixing point, playing a role of squeezing and fixing.

[0030] In this embodiment, the rear cover conductive sealant material 13 is connected to the bottom conductive sealant material 21, the bottom conductive sealant material 21 is arranged at the bottom end of the sound-absorbing filter material 22, and an outer fixing bracket 23 for the filter material is arranged inside the sound-absorbing filter material 22, and the outer fixing bracket 23 for the filter material contains a filter material 24.

[0031] By adopting the above technical solution, the conductor rear cover 11 and the sound-absorbing and filtering material 22 are threadedly connected through the rear cover conductive sealant material 13 and the bottom conductive sealant material 21. The connecting conductor 12 also plays a connecting role. When maintenance or replacement is required, first unplug the two connecting conductors 12, and then the conductor rear cover 11 can be disassembled by screwing. The conductor front cover 31 and the sound-absorbing and filtering material 22 are threadedly connected through the front cover 32 and the top conductive sealant material 26. Similarly, when the conductor front cover 31 needs to be disassembled, it can be done without complex tools and cumbersome operations, achieving rapid disassembly, greatly improving the cleaning efficiency, reducing the maintenance cost, and enhancing the working efficiency.

[0032] In this embodiment, the two connecting conductors 12 connect the conductor rear cover 11, the sound-absorbing and filtering material 22, the outer fixing bracket 23 of the filtering material, the filtering material 24, and the inner fixing bracket 25 of the filtering material in sequence.

[0033] The inner fixing bracket 25 of the filtering material is further provided inside the filtering material 24; the top conductive sealant material 26 is further provided at the top end of the sound-absorbing and filtering material 22.

[0034] By adopting the above technical solution, the separated vacuum pump oil returns to the fuel tank after passing through the inner fixing bracket 25 of the filtering material, the filtering material 24, the outer fixing bracket 23 of the filtering material, and the sound-absorbing and filtering material 22 inside the exhaust filter element, realizing recycling; the separated sundries remain inside the inner fixing bracket 25 of the filtering material and the filtering material 24, prolonging the service life of the vacuum pump, preventing the sundries from returning to the fuel tank along with the vacuum pump oil, and affecting each component of the vacuum pump.

[0035] In this embodiment, the top conductive sealant material 26 is connected to the front cover 32. The upper surface and the bottom end of the conductor front cover 31 are respectively provided with a top conductive sealant 33 and a sealing ring 37 arranged in a ring shape. A check valve seat 34 is provided at the bottom end of the top conductive sealant 33. A spring 35 is provided inside the check valve seat 34, and the top end of the spring 35 is connected to the check valve 36.

[0036] By adopting the above technical solution, during use, the mixed gas discharged by the vacuum pump pushes open the check valve 36, enters the filter element, passes through the inner fixing bracket 25 of the filtering material, filters and separates the mixture in the gas. The separated gas passes through the outer fixing bracket 23 of the filtering material and the sound-absorbing and filtering material 22, and then is discharged into the atmosphere. The multi-layer filtering material has a good separation effect, and the sound-absorbing and filtering material 22 effectively reduces the noise of the vacuum pump.

[0037] The working principle of the present utility model is as follows: When installing the vacuum pump, the conductor front cover 31 is docked with the exhaust port of the vacuum pump, and the sealing ring 37 on the upper surface of the conductor front cover 31 is docked with the exhaust port of the vacuum pump to achieve a sealing effect, ensuring the sealing between the exhaust filter element and the vacuum pump, preventing the leakage of high-pressure gas or liquid inside, and maintaining the pressure in the container; The bottom center position of the conductor rear cover 11 serves as a squeezing and fixing point, playing a role in squeezing and fixing.

[0038] During use, the mixed gas discharged by the vacuum pump pushes open the one-way valve 36 and enters the filter element. It passes through the inner fixing bracket 25 of the filter material, filtering and separating the mixture in the gas. The separated gas passes through the outer fixing bracket 23 of the filter material and the sound-absorbing filter material 22, and then is discharged into the atmosphere. The multi-layer filter material has a good separation effect, and the sound-absorbing filter material 22 effectively reduces the noise of the vacuum pump.

[0039] The separated vacuum pump oil returns to the fuel tank after passing through the inner fixing bracket 25 of the filter material, the filter material 24, the outer fixing bracket 23 of the filter material and the sound-absorbing filter material 22 inside the exhaust filter element, achieving recycling; The separated sundries remain inside the inner fixing bracket 25 of the filter material and the filter material 24, extending the service life of the vacuum pump and preventing the sundries from returning to the fuel tank with the vacuum pump oil and affecting various components of the vacuum pump.

[0040] The conductor rear cover 11 and the sound-absorbing filter material 22 are connected through the rear cover and the bottom, and the connecting conductor 12 also plays a connecting role. When maintenance or replacement is required, only the fixing screw at the center point of the conductor rear cover 11 needs to be loosened. Without complex tools and cumbersome operations, rapid disassembly can be achieved, greatly improving the cleaning efficiency, reducing the maintenance cost at the same time, and improving the work efficiency.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil-sealed vacuum pump exhaust filter element, characterized in that: including a base (1), the upper end of the base (1) is hermetically and fixedly connected to the filter element body (2) through a conductive sealant material; the top end of the filter element body (2) is hermetically and fixedly connected to the top cover (3) through a conductive sealant material; the base (1) includes a conductor rear cover (11), two connecting conductors (12) are symmetrically arranged on the outer side of the upper end of the conductor rear cover (11), and a rear cover conductive sealant material (13) is arranged on the inner wall of the top end.

2. The oil-sealed vacuum pump exhaust filter element according to claim 1, wherein: the rear cover conductive sealant material (13) is connected to the bottom conductive sealant material (21), the bottom conductive sealant material (21) is arranged at the bottom end of the sound-absorbing filter material (22), a filter material outer fixing bracket (23) is arranged inside the sound-absorbing filter material (22), and a filter material (24) is contained in the filter material outer fixing bracket (23).

3. The oil-sealed vacuum pump exhaust filter element according to claim 2, wherein: the two connecting conductors (12) connect the conductor rear cover (11), the sound-absorbing filter material (22), the filter material outer fixing bracket (23), the filter material (24), and the filter material inner fixing bracket (25) in sequence.

4. The oil-sealed vacuum pump exhaust filter element according to claim 3, wherein: a filter material inner fixing bracket (25) is further arranged inside the filter material (24); a top conductive sealant material (26) is further arranged at the top end of the sound-absorbing filter material (22).

5. The oil-sealed vacuum pump exhaust filter element according to claim 4, wherein: the top conductive sealant material (26) is connected to the front cover (32), a top conductive sealant (33) and a sealing ring (37) are respectively arranged on the upper surface and the bottom end of the conductor front cover (31) in a circular shape, a check valve seat (34) is arranged at the bottom end of the top conductive sealant (33), a spring (35) is arranged inside the check valve seat (34), and the top end of the spring (35) is connected to the check valve (36).

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