Air inlet filter for air compressor

Abstract

The utility model discloses an air inlet filter for an air compressor, which relates to the technical field of filters, and comprises an air filtering piece for filtering air, and the air filtering piece is arranged at the air inlet end of a top cover; the top cover is mounted in the tank body filled with lubricating oil in a matched manner; an air inlet channel is formed in the top cover, and an air pipe is fixed below the air inlet channel; the lower end of the air pipe is immersed in the lubricating oil; according to the utility model, under the extraction of the reciprocating compressor or the screw compressor, external air enters the outer shell through the top cover, passes through the filter and the filter element and then enters the air inlet pipe; the air enters the air inlet channel in the top cover, then the air is conveyed into the lubricating oil through the air pipe, when the air is pumped away again, the air carries part of the lubricating oil component, and therefore an air path of the compressor can be conveniently lubricated. Due to the arrangement of the filter and the filter element, dust carried in the air is reduced, and the cleanliness of the air entering the air compressor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an air intake filter for an air compressor. Background Technology

[0002] An air compressor is a mechanical device that converts the mechanical energy of a prime mover (usually an electric motor) into gas pressure energy. It is a device that generates compressed air and is a general-purpose device with wide applications.

[0003] Chinese Patent Publication No. CN 206600251 U discloses a filter for an air compressor, belonging to the field of natural gas equipment. The filter includes: a housing with an open top, an inlet on the side wall, and an outlet on the bottom wall; a top cover connected to the upper end of the housing; a filter element located inside the housing, with its upper end abutting against the top cover and its lower end communicating with the outlet, and a gap between the filter element and the housing; a bottom cover connected to the lower end of the housing, and a gap between the bottom cover and the housing; and a discharge through-hole on the bottom wall of the bottom cover.

[0004] The air compressor filter in the aforementioned patent only performs a simple air filtration function. Given the wide variety of air compressors, taking reciprocating and screw compressors as examples, the lack of a lubrication mechanism in the compressor will lead to the following problems: When a reciprocating compressor is working, the piston reciprocates within the cylinder, and the valves open and close frequently. If there is no lubricating oil in the air circuit, the dry friction between the piston and the cylinder wall, as well as the valve assembly, will significantly increase. Just like mechanical parts without lubricant, long-term operation will cause rapid wear of critical components such as the cylinder wall, piston rings, and valve plates, reducing the compressor's lifespan and even leading to premature damage and scrapping of components.

[0005] Screw compressors compress gas by the meshing of male and female rotors. The relative movement between the rotors and between the rotor and the casing requires lubrication. Without lubrication in the gas path, direct contact and friction between rotors and between the rotor and the casing leads to rapid wear, reduced equipment performance, decreased gas production, and increased energy consumption. Simultaneously, the lack of lubrication also accelerates wear on bearings and other moving parts, shortening the equipment's lifespan.

[0006] Therefore, we provide an intake filter that can lubricate the air passage after intake filtration. Utility Model Content

[0007] The purpose of this invention is to provide an air intake filter for an air compressor, which filters the air during intake and then carries lubricating oil into the air circuit, thereby achieving lubrication of the air circuit; thus solving the technical problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An air intake filter for an air compressor includes a gas filter element for air filtration, the gas filter element being disposed at the air intake end of a top cover; the top cover is fitted into a tank containing lubricating oil inside.

[0010] The top cover has an air intake channel inside, and an air pipe is fixed below the air intake channel; the lower end of the air pipe is immersed in lubricating oil.

[0011] An oil filter is threadedly connected to the middle position of the bottom of the top cover, and the oil filter is also connected to the air outlet channel provided inside the top cover.

[0012] As a further technical solution of this utility model, the bottom of the tank is threaded with a conical plug, and a U-shaped metal clip is fastened to the conical plug; the upper end of the metal clip is folded inward and locked with the top cover.

[0013] As a further technical solution of this utility model, the air intake channel inside the top cover is connected to an air intake connector at its outer end, and the air intake connector is connected to the gas filter through an air intake pipe.

[0014] As a further technical solution of this utility model, the outer end of the air outlet channel provided inside the top cover is connected to an air outlet connector; the air outlet connector is connected to the air inlet end of the reciprocating compressor or the screw compressor.

[0015] As a further technical solution of this utility model, the gas filter includes an outer shell; the outer shell is fixed to the top of the L-shaped air inlet pipe; a filter element is provided in the middle of the inner part of the outer shell, and a filter is sleeved on the outside of the filter element; a second top cover is also threadedly connected to the top of the outer shell.

[0016] As a further technical solution of this utility model, the second top cover is provided with a plurality of air inlet slots in a ring around its perimeter.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, air enters the air intake channel inside the top cover after being filtered by the gas filter, and then the air is delivered to the lubricating oil by the air pipe. When the gas is drawn away again, the gas will carry some lubricating oil components, which facilitates the lubrication of the compressor's air circuit.

[0019] 2. In this utility model, under the extraction of a reciprocating compressor or a screw compressor, outside air will enter the outer casing through the second top cover, and after passing through the filter and filter element, it will enter the intake pipe; the setting of the filter and filter element realizes the filtration of air, reduces the dust carried in the air, and thus ensures the cleanliness of the air entering the air compressor. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This utility model Figure 1 Another perspective illustration.

[0022] Figure 3 This utility model Figure 1 The left view.

[0023] Figure 4 This utility model Figure 3 AA sectional view.

[0024] Figure 5 This utility model Figure 1 Perspective view.

[0025] Figure 6 This utility model Figure 4 A magnified view of a portion of the image.

[0026] In the diagram: 1-Gas filter, 2-Inlet pipe, 3-Inlet connector, 4-Top cover, 5-Outlet connector, 6-Tank body, 7-Metal clip, 8-Conical plug, 9-Gas pipe, 10-Oil filter, 11-Outer shell, 12-Second top cover, 13-Filter, 14-Filter element. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 In this embodiment of the present invention, an air intake filter for an air compressor includes a gas filter element 1 for air filtration, which is disposed at the air intake end of a top cover 4; the top cover 4 is fitted into a tank 6 containing lubricating oil.

[0029] The top cover 4 has an air intake channel inside, and an air pipe 9 is fixed below the air intake channel; the lower end of the air pipe 9 is immersed in lubricating oil.

[0030] An oil filter 10 is threadedly connected to the middle position of the bottom of the top cover 4. The oil filter 10 is also connected to the air outlet channel provided inside the top cover 4.

[0031] By adopting the above technical solution, when in use, air is filtered by the gas filter 1 and enters the air intake channel inside the top cover 4. Then, the air is transported to the lubricating oil by the air pipe 9. Under the extraction of the reciprocating compressor or screw compressor, the gas inside the tank 6 is extracted, and the air pressure inside the tank 6 decreases. Under the action of the external atmospheric pressure, the air in the air intake pipe 2 enters the tank 6, because gas always flows from the place with high pressure (the outside atmosphere) to the place with low pressure.

[0032] Because the gas enters the lubricating oil, when the gas is drawn away again, it carries some of the lubricating oil components, which facilitates the lubrication of the compressor's gas path.

[0033] In this embodiment, a conical plug 8 is threaded to the bottom of the tank body 6, and a U-shaped metal clip 7 is fastened to the conical plug 8; the upper end of the metal clip 7 is folded inward and locked to the top cover 4.

[0034] By adopting the above technical solution, since air will enter the lubricating oil first, some dust will remain in the lubricating oil, resulting in oil stains. After opening the cone plug 8, we can clean the internal oil stains.

[0035] The metal clip 7 increases the installation stability of the cone plug 8; secondly, when there is a lot of oil on the outside of the cone plug 8, making it difficult to rotate and unscrew, the metal clip 7 can be used to remove the cone plug 8.

[0036] In this embodiment, the air intake channel inside the top cover 4 is connected to an air intake connector 3 at its outer end, and the air intake connector 3 is connected to the gas filter 1 through the air intake pipe 2.

[0037] The gas filter element 1 includes an outer shell 11; the outer shell 11 is fixed to the top of the L-shaped air inlet pipe 2; a filter element 14 is provided in the middle of the inner part of the outer shell 11, and a filter 13 is sleeved on the outside of the filter element 14; a second top cover 12 is also threadedly connected to the top of the outer shell 11; the second top cover 12 is provided with a plurality of air inlet grooves in a ring around its perimeter.

[0038] By adopting the above technical solution, under the extraction of the reciprocating compressor or screw compressor, the outside air will enter the outer casing 11 through the second top cover 12, and then enter the intake pipe 2 after passing through the filter 13 and filter element 14. The filter 13 and filter element 14 are set to filter the air, reduce the dust carried in the air, and thus ensure the cleanliness of the air entering the air compressor.

[0039] In this embodiment, the outer end of the air outlet channel inside the top cover 4 is connected to an air outlet connector 5; the air outlet connector 5 is connected to the air inlet of the reciprocating compressor or the screw compressor.

[0040] The working principle of this utility model is as follows: Under the extraction of the reciprocating compressor or screw compressor, the outside air will enter the outer casing 11 through the second top cover 12, and then enter the intake pipe 2 after passing through the filter 13 and filter element 14; the filter 13 and filter element 14 are set to filter the air, reduce the dust carried in the air, and thus ensure the cleanliness of the air entering the air compressor.

[0041] After being filtered by the gas filter 1, the air enters the air intake channel inside the top cover 4. Then, the air is delivered to the lubricating oil through the air pipe 9. Under the extraction of the reciprocating compressor or screw compressor, the gas inside the tank 6 is extracted, and the gas pressure inside the tank 6 decreases. Under the action of the external atmospheric pressure, the air in the air intake pipe 2 enters the tank 6, because gas always flows from the place with high pressure (the outside atmosphere) to the place with low pressure. Since the gas will enter the lubricating oil, when the gas is extracted again, the gas will carry some lubricating oil components, which facilitates the lubrication of the compressor's air passage.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider 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 air intake filter for an air compressor, characterized in that: Includes a gas filter element (1) for air filtration, which is disposed at the air inlet end of a top cover (4); the top cover (4) is fitted into a tank (6) containing lubricating oil. The top cover (4) has an air intake channel inside, and an air pipe (9) is fixed below the air intake channel; the lower end of the air pipe (9) is immersed in lubricating oil; An oil filter (10) is threadedly connected to the middle position of the bottom of the top cover (4), and the oil filter (10) is also connected to the air outlet channel provided inside the top cover (4).

2. The air intake filter for an air compressor according to claim 1, characterized in that: The bottom of the tank (6) is threaded with a cone plug (8), and a U-shaped metal clip (7) is fastened to the cone plug (8); the upper end of the metal clip (7) is folded inward and is fastened to the top cover (4).

3. The air intake filter for an air compressor according to claim 1, characterized in that: The air intake channel inside the top cover (4) is connected to an air intake connector (3) at its outer end. The air intake connector (3) is connected to the gas filter (1) through the air intake pipe (2).

4. The air intake filter for an air compressor according to claim 1, characterized in that: The top cover (4) has an air outlet channel inside which an air outlet connector (5) is connected to the outside end; the air outlet connector (5) is connected to the air inlet of the reciprocating compressor or the screw compressor.

5. The air intake filter for an air compressor according to claim 1, characterized in that: The gas filter (1) includes an outer shell (11); the outer shell (11) is fixed to the top of the L-shaped air inlet pipe (2); a filter element (14) is provided in the middle of the inner part of the outer shell (11), and a filter (13) is sleeved on the outside of the filter element (14); a second top cover (12) is also threaded on the top of the outer shell (11).

6. The air intake filter for an air compressor according to claim 5, characterized in that: The second top cover (12) has several air inlet slots arranged in a ring around its perimeter.

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