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Piston sealing device

A sealing device and piston technology, which is applied in the field of compressors, can solve the problem of uneven force on the piston, and achieve the effect of solving the uneven force on the piston

Inactive Publication Date: 2010-02-10
BEIJING AEONMED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a piston sealing device, which has an improved guiding structure, which can solve the wear of the supporting ring used for guiding and the sealing ring used for sealing during the operation of the piston, and solve the problem of uneven force on the piston , and realize the frictionless gap seal of the piston

Method used

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Embodiment Construction

[0023] Hereinafter, specific embodiments of the present invention will be described in detail with reference to preferred embodiments according to the present invention shown in the accompanying drawings.

[0024] First refer to figure 2 , which shows a piston sealing device according to a preferred embodiment of the present invention, which includes a disc-shaped sealing ring 22 arranged on the outer circumference of a piston 20 housed inside the cylinder 10, in particular, the piston sealing device Also includes: two guide posts (first guides) 24, which are fixedly installed on the piston 20 at the same distance from the center of the piston 20 along the radial direction of the piston 20, and distributed symmetrically along the circumference of the piston 20, wherein , the guide column 24 extends toward the cylinder end cover 30 of the cylinder 10 and passes through the cylinder end cover 30; The centers are fixedly mounted on the cylinder end cover 30 at the same distance...

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Abstract

The invention provides a piston sealing device, which comprises a cyclic annular sealing ring which is arranged on the outer circumference of a piston received in an air cylinder. The device particularly comprises at least two guide posts, wherein the at least two guide posts are evenly fixed to the piston along the circumference of the piston; and each guide post extends out of the piston along the axis of the piston and passes through an air cylinder end cover of the air cylinder. Preferably, the piston sealing device also comprises at least two guide sleeves, wherein the at least two guidesleeves are fixed on the air cylinder end cover on a position corresponding to the at least two guide posts; the guide sleeves are sleeved on the corresponding guide posts in a mode of clearance fit.The piston sealing device has an improved guiding structure, can solve problems of abrasion of a sealing ring for guiding in an operating process of the piston and uneven stress on piston, and realizes friction-free clearance sealing of the piston.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a piston sealing device for an oil-free lubricated compressor. Background technique [0002] With the development of industry, oil-free lubricated compressors are more and more widely used in many occasions where clean oil-free compressed air is required. For example, in a variety of mechanized and automated production processes, pneumatic devices are widely used, which requires the use of oil-free lubricated compressors to generate clean compressed air as the power source for pneumatic devices; in industrial production in the fields of food and pharmaceuticals, certain Some compressed media must also be provided by oil-free lubricated compressors; in the field of medical devices, when using devices such as ventilators or anesthesia machines to mechanically ventilate patients, the compressed gas provided to patients must be clean and oil-free. [0003] The piston sealing device is an ...

Claims

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Application Information

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IPC IPC(8): F04B53/02F04B53/14
Inventor 王军李捷
Owner BEIJING AEONMED
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