Air compressor cylinder piston assembly

Abstract

The utility model relates to an air compressor cylinder piston assembly, including cylinder main part, the inside of cylinder main part is provided with piston main part, the head position department of piston main part is provided with sealing structure, sealing structure includes the multilayer composite piston ring of installing in the first sealing groove and the second sealing groove of piston main part head position department, multilayer composite piston ring is by the multilayer material of inner layer, middle layer and outer layer, the skirt position department of piston main part is still provided with first buffer groove and second buffer groove and set up, the utility model discloses the multilayer composite piston ring in the first sealing layer and the second sealing layer of piston main part head department, through the structural property of multilayer material in multilayer composite piston ring, can effectively reduce the wear and tear, prolongs sealing effect simultaneously, improves air compressor long -term operation stability.

Description

Technical Field

[0001] This application relates to the field of piston technology, and in particular to a piston assembly for an air compressor cylinder. Background Technology

[0002] An air compressor is a device used to compress gas. It converts the mechanical energy of a prime mover (usually an electric motor) into the pressure energy of a gas. It mainly consists of an air circulation system, a water circulation system, an oil circulation system, a power distribution system, a shielding protection system, a DC power supply system, and a DTC control system. Air compressors are similar in construction to water pumps. Most air compressors are reciprocating piston type, rotary vane type, or rotary screw type.

[0003] In some existing air compressor cylinder piston assemblies, piston rings are generally used to increase the sealing between the piston and the cylinder wall. However, the existing piston rings cannot meet the requirements for long-term use, resulting in poor sealing between the piston and the cylinder wall. Furthermore, the reciprocating motion of the piston generates lateral forces, which can easily cause the piston skirt to collide rigidly with the cylinder wall, increasing wear and reducing service life. Utility Model Content

[0004] To address the problems mentioned in the background art, this application provides an air compressor cylinder piston assembly.

[0005] The air compressor cylinder piston assembly provided in this application adopts the following technical solution:

[0006] An air compressor cylinder piston assembly, including

[0007] The cylinder body has a piston body inside it. A first sealing groove and a second sealing groove are formed at the head of the piston body. A first buffer groove and a second buffer groove are also provided at the skirt of the piston body. A sealing structure is provided at the head of the piston body.

[0008] The sealing structure includes a multi-layer composite piston ring installed in the first sealing groove and the second sealing groove. The multi-layer composite piston ring is composed of three layers of materials: an inner layer, a middle layer, and an outer layer.

[0009] Preferably, the inner layer is made of a highly elastic, high-temperature resistant rubber material to ensure initial sealing performance and to fit tightly against the inner wall of the cylinder body.

[0010] Preferably, the middle layer is a high-strength metal support ring to enhance overall rigidity and prevent excessive deformation of the piston ring under high pressure.

[0011] Preferably, the outer layer is a lubricating coating to further reduce the coefficient of friction and reduce wear.

[0012] Preferably, the first buffer groove and the second buffer groove are provided with a buffer structure, the buffer structure including two identical rubber buffer rings, the two rubber buffer rings being fitted together in the first buffer groove and the second buffer groove.

[0013] Preferably, the piston body is further provided with a toggle pin inside, and a bearing sleeve is provided at the middle section of the toggle pin, and the bearing sleeve is also adapted to one end of the crank.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] This invention features a multi-layer composite piston ring within the first and second sealing layers of the piston head. Through the structural properties of the multiple layers of materials within the multi-layer composite piston ring, wear can be effectively reduced, while extending the sealing effect and improving the long-term operational stability of the air compressor.

[0016] This invention involves installing rubber buffer rings inside the first and second buffer grooves of the piston body skirt. This prevents the piston body skirt from rigidly colliding with the cylinder body wall when the piston body generates lateral force during reciprocating motion, thereby reducing wear and noise. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an air compressor cylinder piston assembly according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the main structure of the air compressor piston in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the explosion of the air compressor piston body in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the explosion of a multilayer composite piston ring in an embodiment of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Cylinder body; 2. Piston body; 3. First sealing groove; 4. Second sealing groove; 5. Multi-layer composite piston ring; 6. First buffer groove; 7. Second buffer groove; 8. Inner layer; 9. Middle layer; 10. Outer layer; 11. Rubber buffer ring; 12. Toggle pin; 13. Bearing sleeve; 14. Crank. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses an air compressor cylinder piston assembly, including a cylinder body 1, a piston body 2 disposed inside the cylinder body 1, a sealing structure disposed at the head position of the piston body 2, the sealing structure including a multi-layer composite piston ring 5 installed in a first sealing groove 3 and a second sealing groove 4 at the head position of the piston body 2, the multi-layer composite piston ring 5 being composed of an inner layer 8, a middle layer 9 and an outer layer 10, and a first buffer groove 6 and a second buffer groove 7 disposed at the skirt position of the piston body 2, a toggle pin 12 disposed inside the piston body 2, a bearing sleeve 13 disposed at the middle section of the toggle pin 12, the bearing sleeve 13 being adapted to one end of a crank 14.

[0024] refer to Figure 4 The inner layer 8 is made of highly elastic, high-temperature resistant rubber material to ensure initial sealing performance and tightly fit the inner wall of the cylinder body 1. The middle layer 9 is a high-strength metal support ring to enhance overall rigidity and prevent excessive deformation of the piston ring under high pressure. The outer layer 10 is a lubricating coating to further reduce the coefficient of friction and reduce wear. More specifically, the multi-layer composite piston ring 5 is composed of three layers: inner layer 8, middle layer 9, and outer layer 10. The inner layer 8 is made of highly elastic, high-temperature resistant rubber material to tightly fit the inner wall of the cylinder body 1. The middle layer 9 is made of high-strength metal support ring to enhance overall rigidity and prevent excessive deformation of the piston ring under high pressure. The outer layer 10 is made of lubricating coating to reduce wear.

[0025] refer to Figure 2 and Figure 3 The first buffer groove 6 and the second buffer groove 7 are provided with a buffer structure. The buffer structure includes two identical rubber buffer rings 11. The two rubber buffer rings 11 are sleeved in the first buffer groove 6 and the second buffer groove 7. More specifically, by installing the rubber buffer rings 11 in the first buffer groove 6 and the second buffer groove 7 inside the piston body 2 skirt, the piston body 2 skirt is prevented from rigidly colliding with the cylinder body 1 wall when the piston body 2 generates lateral force during reciprocating motion, thereby reducing wear and noise.

[0026] The implementation principle of an air compressor cylinder piston assembly according to an embodiment of this application is as follows: In use, a multi-layer composite piston ring 5 is installed in the first sealing groove 3 and the second sealing groove 4 at the head of the piston body 2, so that the high elasticity and high temperature resistant rubber material of the inner layer 8 of the multi-layer composite piston ring 5 is tightly attached to the inner wall of the cylinder body 1. The high-strength metal support ring of the middle layer 9 enhances the overall rigidity and prevents the multi-layer composite piston ring 5 from being excessively deformed under high pressure. The outer layer 10 is coated with a lubricating coating to reduce wear. At the same time, two rubber buffer rings 11 are installed in the first buffer groove 6 and the second buffer groove 7 of the skirt of the piston body 2. When the piston body 2 reciprocates along the cylinder body 1, a lateral force is generated. The rubber buffer rings 11 can prevent the skirt of the piston body 2 from rigidly colliding with the wall of the cylinder body 1, thereby reducing wear and noise.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A piston assembly for an air compressor cylinder, characterized in that: include The cylinder body has a piston body inside it. A first sealing groove and a second sealing groove are formed at the head of the piston body. A first buffer groove and a second buffer groove are also provided at the skirt of the piston body. A sealing structure is provided at the head of the piston body. The sealing structure includes a multi-layer composite piston ring installed in the first sealing groove and the second sealing groove. The multi-layer composite piston ring is composed of three layers of materials: an inner layer, a middle layer, and an outer layer.

2. The air compressor cylinder piston assembly according to claim 1, characterized in that: The inner layer is made of highly elastic, high-temperature resistant rubber material, which fits tightly against the inner wall of the cylinder body.

3. The air compressor cylinder piston assembly according to claim 2, characterized in that: The middle layer is a high-strength metal support ring.

4. The air compressor cylinder piston assembly according to claim 3, characterized in that: The outer layer is a lubricating coating.

5. The air compressor cylinder piston assembly according to claim 1, characterized in that: The first and second buffer slots are provided with buffer structures, the buffer structures including two identical rubber buffer rings, which are fitted together in the first and second buffer slots.

6. The air compressor cylinder piston assembly according to claim 1, characterized in that: The piston body is also provided with a toggle pin inside, and a bearing sleeve is provided at the middle section of the toggle pin. The bearing sleeve is also adapted to one end of the crank.

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