Piston assembly for air compressor
By designing a detachable air compressor piston assembly, the problem of piston wear caused by seal wear was solved, reducing replacement costs and improving sealing performance.
Patent Information
- Application Number
- CN202520605078.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-04-01
AI Technical Summary
In existing air compressors, wear of the piston seals leads to wear of the piston body, affecting sealing performance and increasing replacement costs.
Design a detachable piston assembly, including a connecting rod, assembly block, sealing block, and top cap, which is assembled through stud connection and limiting structure to reduce replacement costs.
The design of the piston assembly, which is assembled in sections, reduces the cost of piston replacement and improves sealing performance and service life.
Smart Images
Figure CN223781599U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to air compressor technical field relates to a piston assembly for air compressor. BACKGROUND
[0002] The piston is reciprocating machine part, belongs to the important component of air compressor, but in the practical application process, because the piston does long-term reciprocating, after the excessive wear of sealing block, if not replacing sealing block in time, the wear of piston body cannot be avoided, and once the piston body is worn, it is easy to cause its damage, thereby affecting the sealing property after replacement, and the replacement needs to replace the whole, thereby the replacement cost is big. SUMMARY
[0003] The utility model discloses in order to solve the technical problem in the prior art, provide a piston assembly that good sealing and reduce replacement cost.
[0004] The utility model discloses a piston assembly for air compressor, including piston body, its characterized in that, the piston body includes connecting rod, a plurality of coaxial assembly block, a plurality of sealing block and top cap, the upper end of connecting rod is provided with the installation platform that is connected with it and is installed for assembly block, the top cap is set up on the assembly block and is connected with it, the top cap and the assembly block all are seted up with the installation groove that is installed for sealing block.
[0005] In the piston assembly for air compressor, the upper end surface of the assembly block is provided with a through hole axially penetrating the assembly block, the lower end surface of the top cap is provided with an installation protrusion axially protruding outward and sleeved and installed for the assembly block, the upper end surface of the installation platform at the recessed groove is provided with an installation portion axially protruding outward and installed for the installation protrusion, and the top cap is connected with the installation portion through a stud.
[0006] In the piston assembly for air compressor, the upper end surface of the assembly block is provided with a protruding ring portion axially protruding outward, the lower end surface of the assembly block is provided with a ring groove axially recessed inward, the lower end surface of the top cap is also provided with a ring groove installed for the corresponding protruding ring portion, and the upper end surface of the installation platform is also provided with a protruding ring portion axially protruding outward and embedded in the corresponding ring groove.
[0007] In the piston assembly for air compressor, the lower end surface of the sealing block is provided with a ring-shaped elastic groove axially recessed inward and having elasticity, and the sealing block is provided with a sealing ring in the ring-shaped elastic groove.
[0008] Compared to existing technologies, the piston assembly used in air compressors reduces replacement costs by disassembling and assembling the piston body. Attached Figure Description
[0009] Figure 1 This is a cross-sectional structural diagram of a piston assembly used in an air compressor.
[0010] In the diagram, 1 is the connecting rod; 2 is the assembly block; 3 is the sealing block; 4 is the top cover; 5 is the mounting platform; 6 is the mounting protrusion; 7 is the mounting part; and 8 is the protruding ring. Detailed Implementation
[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0012] like Figure 1 As shown, the piston assembly for an air compressor includes a piston body, which includes a connecting rod 1, several coaxially arranged assembly blocks 2, several sealing blocks 3, and a top cover 4. The upper end of the connecting rod 1 has a mounting platform 5 connected to it and for mounting the assembly blocks 2. The top cover 4 is mounted on and connected to the uppermost assembly block 2. Both the top cover 4 and the assembly block 2 have mounting grooves for mounting the sealing blocks 3. These mounting grooves are located at the lower ends of the top cover 4 and the assembly block 2, facilitating the mounting of the sealing blocks 3 onto the top cover 4 and the assembly block 2. During assembly, the sealing blocks are limited by adjacent mounting platforms 5 and assembly blocks 2. The upper end face of the assembly block 2 has an axially penetrating through-hole. The lower end face of the top cover 4 has an axially outwardly protruding mounting protrusion 6 for mounting the assembly blocks 2. The lower end face of the mounting protrusion 6 has an axially inwardly recessed groove. The outer peripheral wall of the mounting protrusion 6 is provided with several limiting strips that are arranged along its circumference and embedded in the assembly block 2. The upper end surface of the mounting platform 5 located in the recessed groove is provided with an axially outward protruding mounting part 7 for mounting the mounting protrusion 6. The upper end surface of the mounting platform 5 located in the mounting part 7 is provided with an annular groove for the mounting protrusion 6 to slide into. The top cover 4 is connected to the mounting part 7 by studs. The upper end surface of the assembly block 2 is provided with an axially outward protruding ring part 8. The lower end surface of the assembly block 2 is provided with an axially inward recessed annular groove. The lower end surface of the top cover 4 is also provided with an annular groove for the corresponding protruding ring part to be embedded in. The upper end surface of the mounting platform 5 is also provided with an axially outward protruding ring part 8 that is embedded in the corresponding annular groove. The lower end surface of the sealing block 3 is provided with an axially inward recessed and elastic annular groove. The sealing block 3 is provided with a sealing ring located in the annular elastic groove.
[0013] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.
[0014] Although the same terms are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation by interpreting them is contrary to the spirit of the present application.
Claims
1. A piston assembly for an air compressor comprising a piston body, characterised in that, The piston body comprises a connecting rod (1), a plurality of coaxially arranged assembly blocks (2), a plurality of sealing blocks (3) and a top cover (4), an installation table (5) is arranged on the upper end of the connecting rod (1) and connected with the connecting rod (1) and used for mounting the assembly blocks (2), the top cover (4) is arranged on the assembly blocks (2) and connected with the assembly blocks (2), and the top cover (4) and the assembly blocks (2) are both provided with installation grooves for mounting the sealing blocks (3).
2. A piston assembly for an air compressor as defined in claim 1, wherein, An axial through hole is formed in the upper end surface of the assembly block (2), an installation protrusion (6) is arranged on the lower end surface of the top cover (4) and protrudes axially outward and is used for sleeving and mounting the assembly block (2), a recessed groove is formed in the lower end surface of the installation protrusion (6) and recesses axially inward, an installation part (7) is arranged on the upper end surface of the installation table (5) at the recessed groove and protrudes axially outward and is used for mounting the installation protrusion (6), and the top cover (4) is connected with the installation part (7) through a stud.
3. A piston assembly for an air compressor as defined in claim 1, wherein, A protruding ring part (8) is arranged on the upper end surface of the assembly block (2) and protrudes axially outward, an annular groove is formed in the lower end surface of the assembly block (2) and recesses axially inward, an annular groove is also formed in the lower end surface of the top cover (4) and used for embedding and mounting the corresponding protruding ring part, and the upper end surface of the installation table (5) is also provided with the protruding ring part (8) which protrudes axially outward and is embedded in the corresponding annular groove.
4. A piston assembly for an air compressor as defined in claim 1, wherein, An annular elastic groove is formed in the lower end surface of the sealing block (3) and recesses axially inward and has elasticity, and a sealing ring is arranged in the annular elastic groove.