Air compressor with high-efficiency air intake purification assembly
By introducing a multi-stage filtration structure into the air compressor, and utilizing metal filter screens and barrier plates, the problem of poor single-stage filtration effect is solved, the filtration capacity of the air compressor is improved, the equipment is protected, and the service life is extended.
Patent Information
- Application Number
- CN202521408602.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-07
AI Technical Summary
When there is a lot of dust, the single-stage filtration structure of the existing air compressor has poor filtration effect, which causes impurities to enter the compressor, affecting the operation of the equipment and shortening its service life.
It adopts a multi-stage filtration structure, including a primary filter element and a secondary filter assembly. The primary filter element uses a metal filter screen, and the secondary filter assembly forms a multi-stage filtration through the design of barrier plates and clearance grooves to block particulate matter and oil mist in the air.
It improves the filtration effect on impurities and oil mist in the air, reduces the risk of impurities entering the compressor, protects the core components of the equipment, and extends its service life.
Smart Images

Figure CN224679646U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air compressor equipment technology, specifically relating to an air compressor with a high-efficiency air intake purification assembly. Background Technology
[0002] In existing technology, air compressors need to draw in air, compress it, and then discharge it during operation. When there is a lot of dust in the air, a large amount of dust will enter the air compressor, affecting its normal operation and even damaging it, thus shortening its service life.
[0003] like Figure 1 As shown, traditional air compressors typically employ a single-stage filtration structure, placing only a filter screen in the intake side cover at the air inlet, resulting in poor adsorption and filtration efficiency. Particulate matter, dust, and other impurities in the air enter the compressor, potentially causing various problems. The quality of compressed air also deteriorates, directly impacting product quality or equipment safety and increasing maintenance costs. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, this utility model provides an air compressor with a high-efficiency air intake purification assembly to solve the technical problem of poor filtration effect in air compressors with single-stage filtration structures.
[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: An air compressor with a high-efficiency intake purification assembly includes a cylinder head assembly, and an intake side cover, a primary filter, and a secondary filter assembly sequentially mounted on the intake port of the cylinder head assembly. Both the primary filter and the secondary filter assembly are used to filter outside air.
[0006] The secondary filtration assembly includes an intake valve seat, an intake gasket, and an intake base. The intake valve seat has multiple intake holes. The intake gasket has a barrier plate that mates with the intake holes. Initially, the barrier plate is flush against the inner wall of the intake valve seat, effectively blocking the intake holes. The intake base has a clearance groove that mates with the barrier plate.
[0007] Furthermore, the primary filter element is a metal filter screen.
[0008] Furthermore, the air intake pad and the barrier pad are integrally formed and both are made of elastic metal material.
[0009] Furthermore, an intake sealing gasket is provided between the intake side cover, the primary filter, the secondary filter assembly and the cylinder head assembly.
[0010] Furthermore, the air intake base and the air intake pad are respectively provided with mounting holes and positioning holes. The mounting hole of the air intake base is provided with a pin that mates with the positioning hole on the air intake pad.
[0011] Compared with the prior art, the present invention has the following advantages: This invention creates a multi-stage filtration system for the air compressor inlet by setting up a metal filter screen and barrier plates. This improves the adsorption and filtration effect on impurities and oil mist in the outside air, and prevents impurities such as particulate matter and dust in the air from entering the compressor. This reduces problems such as component damage and seal failure caused by particulate matter blockage, protects the core components of the equipment, and extends its service life. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of an air compressor filter structure in the prior art; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the secondary filter assembly in this utility model. Figure 2 (Enlarged view of part A in the middle) Figure 4 This is a schematic diagram showing the relative positions of the secondary filter assembly and the cylinder head assembly in the assembled state of this utility model; Figure 5 This is a schematic diagram showing the relative positions of the primary filter element and the secondary filter assembly in the assembled state of this utility model. Figure 4 (Enlarged view of part B in the middle section).
[0013] Reference numerals: 1. Cylinder head assembly; 2. Intake side cover; 3. Primary filter; 4. Secondary filter assembly; 5. Intake gasket; 6. Intake valve seat; 7. Intake gasket; 8. Intake base; 9. Barrier plate; 10. Clearance groove; 11. Pin. Detailed Implementation
[0014] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] like Figure 2 and 3As shown, an air compressor with a high-efficiency intake purification assembly includes a cylinder head assembly 1, and an intake side cover 2, a primary filter element, and a secondary filter assembly 4 sequentially installed on the intake port of the cylinder head assembly 1. The primary filter element and the secondary filter assembly 4 form a multi-stage filtration system for the outside air. Intake sealing gaskets 5 are provided between the intake side cover 2, the primary filter element, the secondary filter assembly 4, and the cylinder head assembly 1 to prevent external impurities from directly entering the cylinder head assembly 1 through gaps.
[0017] like Figure 2 As shown, the primary filter element uses a metal filter screen to filter large particulate impurities and oil mist in the air, preventing impurities from contaminating the lubricating oil, causing grinding between the piston and the cylinder wall, and accelerating component wear.
[0018] like Figure 3 , 4 As shown in Figure 5, the secondary filter assembly 4 includes an intake valve seat 6, an intake gasket 7, and an intake base 8. The intake valve seat 6 has multiple intake holes. The intake gasket 7 has a barrier 9 that mates with the intake holes. In the initial state, the barrier 9 fits against the inner wall of the intake valve seat 6, effectively blocking the intake holes. The intake base 8 has a clearance groove 10 that mates with the barrier 9, providing clearance space when the barrier 9 deforms, allowing outside air to smoothly enter the cylinder head assembly 1 and reach the air compressor.
[0019] In the specific working process of the air compressor, when the air compressor is working, the outside gas pushes the baffle plate 9 to deform towards the intake base 8. An intake channel is formed between the baffle plate 9 and the inner wall of the clearance groove 10 in the intake base 8, allowing the gas to enter smoothly. Simultaneously, the gas entering through the intake holes will preferentially contact the baffle plate 9, which further blocks particulate impurities, oil mist, and water vapor in the outside air. After the gas has entered, the baffle plate 9 deforms and returns to its original position, re-sealing the intake holes and preventing the incoming gas from flowing back to the outside.
[0020] In this embodiment, the air intake pad and the barrier 9 are integrally formed and both are made of elastic metal material, which enables them to deform during air intake and reset after air intake is completed to seal the air intake hole.
[0021] Furthermore, the intake base 8 and the intake gasket are respectively provided with mounting holes and positioning holes. The mounting hole of the intake base 8 is provided with a pin 11 that mates with the positioning hole on the intake gasket. The pin 11 is inserted into the mounting hole and its outer end is exposed, thus mates with the positioning hole on the intake gasket to form the mounting and positioning of the intake gasket.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An air compressor with a high-efficiency air intake purification assembly, characterized in that: It includes a cylinder head assembly (1), and an intake side cover (2), a primary filter and a secondary filter assembly (4) installed sequentially on the intake port of the cylinder head assembly (1); the primary filter and the secondary filter assembly (4) are both used to filter outside air; The secondary filter assembly (4) includes an intake valve seat (6), an intake pad (7), and an intake base (8); the intake valve seat (6) has multiple intake holes; the intake pad (7) has a barrier plate (9) that cooperates with the intake holes; in the initial state, the barrier plate (9) is in contact with the inner wall of the intake valve seat (6) and can block the intake holes on the intake valve seat (6); the intake base (8) has a clearance groove (10) that cooperates with the barrier plate (9).
2. An air compressor with a high-efficiency intake purification assembly according to claim 1, characterized in that: The primary filter element is a metal filter screen.
3. An air compressor with a high-efficiency intake purification assembly according to claim 1, characterized in that: The air intake pad and the barrier (9) are integrally formed and both are made of elastic metal.
4. An air compressor with a high-efficiency intake purification assembly according to claim 1, characterized in that: An intake sealing gasket (5) is provided between the intake side cover (2), the primary filter, the secondary filter assembly (4) and the cylinder head assembly (1).
5. An air compressor with a high-efficiency intake purification assembly according to claim 1, characterized in that: The air intake base (8) and the air intake pad are respectively provided with mounting holes and positioning holes; the mounting hole of the air intake base (8) is provided with a pin (11) that matches the positioning hole on the air intake pad.