A sliding sleeve type two-position three-way pneumatic high-speed switching valve

Abstract

The invention relates to the technical field of pneumatic elements, in particular to a sliding-sleeve type two-position three-way pneumatic high-speed switching valve, which comprises a valve body, wherein a valve cavity is molded in the valve body, a gas inlet, an exhaust port A and an exhaust port B are arranged in the valve body, the exhaust port A is communicated to the top of the valve cavity through a through hole A, the gas inlet is communicated to the upper part of the valve cavity, a sealing element is arranged on the inner wall of the valve cavity, a fixed block is molded in the valve cavity, a through hole B corresponding to the through hole A is arranged in the fixed block, the through hole B is communicated with the exhaust port B, a sealed sliding-sleeve assembly is arranged between the fixed block and the sealing element, and a reset spring is arranged between the sealed sliding-sleeve assembly and the fixed block. No motive seal exists between sealing pairs of the sliding-sleeve type two-position three-way pneumatic high-speed switching valve, so that the working life of the valve is prolonged, and the kinetic friction is reduced.

Description

technical field [0001] The invention relates to the technical field of pneumatic components, in particular to a sliding sleeve type two-position three-way pneumatic high-speed switching valve. Background technique [0002] Two-position three-way pneumatic switch valve, as a kind of pneumatic components, is widely used and is well known and common. At present, the pneumatic two-position three-way high-speed switching valve mostly adopts a seat valve structure, and the air flow channel is formed through the valve core and the valve body, and the sealing structure of the moving pair in the valve body mostly adopts a dynamic seal (mostly rubber parts) structure . With this setting, due to the high working frequency of the kinematic pair of the high-speed switching valve and the high number of kinematic switching, the dynamic seal has the following defects and deficiencies: 1. The dynamic seal has large fatigue damage and the airtightness of the product is poor, thus affecting t...

AI Technical Summary

Problems solved by technology

With this setting, due to the high working frequency of the kinematic pair of the high-speed switching valve and the high number of kinematic switching, the dynamic seal has the following defects and deficiencies: 1. The dynamic seal has large fatigue damage and the airtightness of the product is poor, thus affecting the product quality; 2. Large seal friction coefficient and large power loss

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