CN210164602U

CN210164602U - Double-acting piston assembly

Info

Publication number: CN210164602U
Application number: CN201920869942.1U
Authority: CN
Inventors: 李文斌; 张绍明
Original assignee: ANSHAN LIBANG COMPRESSORS Co Ltd
Current assignee: ANSHAN LIBANG COMPRESSORS Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-03-20
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a double-acting piston subassembly, including double-acting cylinder, set up the piston rod seat in the double-acting cylinder, the piston rod sets up on the piston rod seat, and the upper end and the piston of piston rod are fixed, and the axial top of piston sets up the piston cap, sets up the piston gasket between the top of piston and piston cap, and the top of piston cap sets up the pneumatic valve, and the lower extreme of piston rod sets up the packing seat, and the below of piston rod seat sets up the piston rod seatpad. The utility model has the advantages that: due to the adoption of the piston gasket, the upper dead point gap of the cylinder can be adjusted, and the efficient work of the compressor is ensured; the arrangement of the piston rod seat cushion further facilitates the adjustment of the upper dead point clearance; furthermore, the utility model discloses a structure is convenient for process, has avoided scrapping because the clearance is too big of piston, has practiced thrift the cost, has prolonged the life of compressor.

Description

Double-acting piston assembly

Technical Field

The utility model relates to a compressor technical field, a structure of piston specifically says so.

Background

The compressor drives the gas flow by the back and forth movement of a piston, which is one of the most important parts of the compressor. Under the condition of unchanged stroke volume, the larger the clearance between the top dead center of the piston and the double-acting cylinder body is, the smaller the actual displacement is, and conversely, the smaller the clearance is, the larger the displacement is, and the higher the efficiency of the compressor is. The existing compressor piston is of an integral structure, and the gap cannot be adjusted, so that the gap is larger and larger along with the abrasion of the piston, and the efficiency of the compressor is lower and lower.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a piston structure in adjustable clearance, concrete technical scheme is as follows:

the utility model provides a double-acting piston assembly, includes double-acting cylinder, set up the piston rod seat in the double-acting cylinder, the piston rod sets up on the piston rod seat, and the upper end and the piston of piston rod are fixed, and the axial top of piston sets up the piston lid, sets up the piston pad between the top of piston and piston lid, and the top of piston lid sets up the pneumatic valve, and the lower extreme of piston rod sets up the packing seat, and the below of piston rod seat sets up the piston rod seatpad.

And a sealing ring is arranged between the filler seat and the double-acting cylinder.

The piston cover and the piston are matched with the stepped groove through the stepped shoulder and are fastened through bolts.

The upper end of the piston rod is provided with an external thread, the lower end of the piston is provided with an internal thread, and the piston rod and the piston are connected into a whole through the external thread and the internal thread in a matching way.

The bolt is embedded in the upper end face of the piston.

The utility model has the advantages that: due to the adoption of the piston gasket, the upper dead point gap of the cylinder can be adjusted, and the efficient work of the compressor is ensured; the arrangement of the piston rod seat cushion further facilitates the adjustment of the upper dead point clearance; furthermore, the utility model discloses a structure is convenient for process, has avoided the piston to scrap because the clearance is too big, has practiced thrift the cost, has prolonged the life of compressor.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The utility model is described in detail with the following drawings, as shown in the figures, the utility model comprises a double-acting cylinder 1, a piston rod seat 2 is arranged in the double-acting cylinder 1, the lower end of a piston rod 3 is fixed on the piston rod seat 2 through a bolt, the upper end of the piston rod 3 is fixed with a piston 4, a piston cover 11 is arranged axially above the piston 4, a piston gasket 5 is arranged between the upper part of the piston 4 and the piston cover 11, an air valve 6 is arranged above the piston 4, the gap between the air valve 6 and the piston cover is an upper dead point gap 7, and the gap between a lower dead point of the piston and a filler seat is a lower dead point gap 17; the lower end of the piston rod 3 is provided with a filler seat 8, and a piston rod seat cushion 9 is arranged below the piston rod seat 2.

And a sealing ring 10 is arranged between the filler seat 8 and the double-acting cylinder 1.

The piston cover 11 and the piston 4 are matched with the stepped groove 13 through the stepped shoulder 12 and are fastened into a whole through the bolt 14.

The upper end of the piston rod 3 is provided with an external thread 15, the lower end of the piston is provided with an internal thread 16, and the piston rod and the piston are connected into a whole through the external thread 15 and the internal thread 16 in a matching mode.

The bolt 14 is embedded in the upper end face of the piston.

The utility model discloses during the use, top dead center clearance and lower dead center clearance are adjusted to the thickness of accessible adjusting piston gasket and piston rod seatpad.

Claims

1. A double acting piston assembly comprising a double acting cylinder, characterized by: the double-acting air cylinder is characterized in that a piston rod seat is arranged in the double-acting air cylinder, a piston rod is arranged on the piston rod seat, the upper end of the piston rod is fixed with the piston, a piston cover is arranged above the piston in the axial direction, a piston gasket is arranged between the upper part of the piston and the piston cover, an air valve is arranged above the piston cover, a filler seat is arranged at the lower end of the piston rod, and a piston rod seat cushion is arranged below the piston rod seat.

2. A double acting piston assembly according to claim 1, wherein: and a sealing ring is arranged between the filler seat and the double-acting cylinder.

3. A double acting piston assembly according to claim 1, wherein: the piston cover and the piston are matched with the stepped groove through the stepped shoulder and are fastened through bolts.

4. A double acting piston assembly according to claim 1, wherein: the upper end of the piston rod is provided with an external thread, the lower end of the piston is provided with an internal thread, and the piston rod and the piston are connected into a whole through the external thread and the internal thread in a matching way.

5. A double acting piston assembly according to claim 3, wherein: the bolt is embedded in the upper end face of the piston.