Mechanical two-position five-way reversing valve

Abstract

The invention discloses a mechanical two-position five-way reversing valve. The mechanical two-position five-way reversing valve comprises a body. A valve cavity and a valve core which is arranged in the valve cavity are formed in the body; an exhaust port I, an air inlet and an exhaust port II capable of communicating with the valve cavity are successively formed in one side of the body from left to right; a working port I and a working port II capable of communicating with the valve cavity are formed in the other side of the body; a volcanic vent I is formed between the exhaust port I and the working port I, a volcanic vent II is formed between the air inlet and the working port I, a volcanic vent III is formed between the air inlet and the working port II, and a volcanic vent IV is formed between the exhaust port II and the working port II; a seal ring capable of switching a sealing state between the end surface of the volcanic vent I and the end surface of the volcanic vent II is arranged on the left end of the valve core; a seal gasket I and a seal gasket II are arranged at the right end of the valve core; an end cover is arranged at the left end of the body; an ejector rod is arranged in the end cover; and a main spring is arranged between the ejector rod and the valve core. The invention aims to provide the mechanical two-position five-way reversing valve which reduces the requirement on cleanliness of a working medium and improves the working reliability.

Description

technical field [0001] The invention belongs to the field of five-way valves, in particular to a mechanical two-position five-way reversing valve. Background technique [0002] At present, the common five-way valve structure is "spool type", such as the Chinese patent announcement number: CN103016785A, which discloses a symmetrical two-position five-way valve, including a valve body, which can be moved in the valve chamber A of the valve body The valve stem is set on the bonnet at both ends of the valve body, and the valve body wall is provided with an inner exhaust port one, an air outlet port one, an air inlet port, an air outlet port two, and an inner exhaust port at equal distances from left to right. 2. The inner wall of the valve chamber A is fixedly lined with a spacer, and the spacer is provided with a number of flat rings at intervals. The flat rings are connected to an inner exhaust port, an air outlet, an air inlet, and an air outlet. 2. The two inner exhaust por...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing spool type structure, when the compressed air contains solid impurities, the impurities will adhere to the surface of the valve core and slide together with the valve core. During this process, the sealing ring is easy to be cut, resulting in a gap between the sealing ring and the valve core. achieve an effective seal

When the compressed air contains moisture, the moisture will wash off the grease on the sealing ring, causing the sliding structure to work poorly

Therefore, the two-way valves in the prior art have higher requirements for the cleanliness of the working medium, otherwise the reliability of the valve will be greatly affected

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