Leakage-proof air cylinder of piston type gas compressor

Abstract

The utility model provides an anti-leakage air cylinder of a piston type gas compressor, and aims to solve the problem of air leakage of the air cylinder. The key point is that the device comprises a pressure valve cover and a cylinder valve hole cover, a circle of fastening bolts are arranged on the cylinder valve hole cover, a plurality of jackscrews are also arranged on the cylinder valve hole cover, the upper end of each jackscrew is a jackscrew cap, the lower end of each jackscrew is a flat end, the jackscrew cap of each jackscrew is pressed on the cylinder valve hole cover, and the lower end of each jackscrew is propped against the pressure valve cover, so that a gap is formed between the pressure valve cover and the cylinder valve hole cover; the jackscrews are located on the inner circle of the circle of fastening bolts. The utility model has the effects that even if the compressed air pressure is too high, the pressure valve cover is jacked by a plurality of jackscrews and cannot jump up and down, and a gap is kept between the pressure valve cover and the cylinder valve hole cover, so that the pressure valve cover is prevented from repeatedly colliding with the cylinder valve hole cover, the cylinder valve hole cover and a bolt thereof are prevented from loosening, and the sealing of the sealing surface of the cylinder valve hole cover during delivery is kept.

Description

Technical Field

[0001] This utility model relates to a piston gas compressor, specifically the cylinder of a piston gas compressor. Background Technology

[0002] In addition to the cylinder body, the cylinder of a reciprocating high-pressure gas compressor includes a valve, a pressure valve cover, and a cylinder valve bore cover. The pressure valve cover is located between the valve and the cylinder valve bore cover, covering the valve. The cylinder valve bore cover is installed and secured to the cylinder body using fastening bolts to seal the cylinder. The fastening bolts refer to several bolts arranged in a circle around the circular cylinder valve bore cover. During operation, as the piston reciprocates, the compressed gas pressure gradually increases, causing the pressure valve cover to bounce up and down, repeatedly colliding with the cylinder valve bore cover. This repeated collision loosens the fastening bolts, causing the cylinder valve bore cover to be lifted, creating a gap between the sealing surface of the cylinder valve bore cover and the cylinder body, resulting in cylinder leakage. Summary of the Invention

[0003] To solve the aforementioned cylinder leakage problem, the purpose of this utility model is to provide a leak-proof cylinder for a piston gas compressor.

[0004] The purpose of this utility model is achieved as follows: it includes a pressure valve cover and a cylinder valve bore cover, with a ring of fastening bolts on the cylinder valve bore cover. The feature is that several set screws are also installed on the cylinder valve bore cover. The upper end of each set screw is a set screw cap, and the lower end (top end) is flat. The set screw cap of each set screw presses on the cylinder valve bore cover, and the lower end presses against the pressure valve cover, so that a gap is formed between the pressure valve cover and the cylinder valve bore cover. The several set screws are located in the inner ring of the fastening bolts.

[0005] In this way, when the high-pressure gas compressor is running, even if the compressed gas pressure is too high, the valve cover is held in place by several set screws, preventing it from jumping up and down. A gap is always formed between the valve cover and the cylinder valve hole cover, thus preventing the valve cover from repeatedly colliding with the cylinder valve hole cover. This also prevents the cylinder valve hole cover and its fastening bolts from loosening, maintaining the sealing of the cylinder valve hole cover sealing surface as it was at the factory. In other words, compared with the prior art, this utility model eliminates the gap between the cylinder valve hole cover sealing surface and the cylinder body, preventing cylinder leakage. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings.

[0007] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0008] The cylinder 5 includes a pressure valve cover 6 and a cylinder valve bore cover 3. There is a ring of fastening bolts 1 on the cylinder valve bore cover. Several set screws 2 are also installed on the cylinder valve bore cover. The upper end of the set screw is a set screw cap 21, and the lower end, i.e. the top end, is a flat end 22. The set screw cap 21 of each set screw presses on the cylinder valve bore cover 3, and the lower end, i.e. the top end 22, presses on the pressure valve cover 6, so that a gap 4 is formed between the pressure valve cover and the cylinder valve bore cover. The several set screws refer to three or four set screws 2 forming a ring, located in the inner ring of the ring of fastening bolts 1.

[0009] When the high-pressure gas compressor is running, even if the compressed gas pressure is too high, the valve cover is held in place by three or four set screws, preventing it from jumping up and down. The valve cover and the cylinder valve bore cover always maintain a gap, which avoids the valve cover from repeatedly colliding with the cylinder valve bore cover. This, in turn, prevents the cylinder valve bore cover and its fastening bolts from loosening, thus maintaining the sealing of the cylinder valve bore cover sealing surface as it was at the factory.

Claims

1. A leak-proof cylinder for a reciprocating gas compressor, comprising a pressure valve cover and a cylinder valve bore cover, wherein a ring of fastening bolts is present on the cylinder valve bore cover, characterized in that: The cylinder valve bore cover is also equipped with several set screws. The upper end of each set screw is a set screw cap, and the lower end is flat. The set screw cap of each set screw presses on the cylinder valve bore cover, and the lower end presses against the valve cover, so that a gap is formed between the valve cover and the cylinder valve bore cover. The set screws are located in the inner ring of a ring of fastening bolts.

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