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Four-way reversing valve

A four-way reversing valve and one-way valve technology, applied in the field of reversing valves, can solve problems such as easy reversing failure, and achieve the effect of avoiding reversing failure and ensuring normal operation

Pending Publication Date: 2021-11-26
ZHEJIANG DUNAN MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a four-way reversing valve to solve the problem of easy reversing failure in the prior art

Method used

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  • Four-way reversing valve
  • Four-way reversing valve

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] Such as figure 2 As shown, the embodiment of the present application provides a four-way reversing valve, and the four-way reversing valve includes: a main valve 10 , a pilot valve 20 and a first one-way valve 41 . Wherein, the main valve 10 has a first valve cavity 11 and a first valve core...

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Abstract

The invention provides a four-way reversing valve. The four-way reversing valve comprises a main valve, a pilot valve and a first one-way valve; the main valve is provided with a first valve cavity and a first valve element, the first valve element is arranged in the first valve cavity, and an air inlet pipe opening, an air outlet pipe opening, a first pipe opening and a second pipe opening are formed in the main valve; the pilot valve is provided with a second valve cavity and a second valve element, the second valve element is arranged in the second valve cavity, the pilot valve is provided with a pilot valve inlet, a pilot valve outlet, a third pipe opening and a fourth pipe opening, the pilot valve outlet communicates with the air outlet pipe opening through a first capillary tube, the pilot valve inlet communicates with the air inlet pipe opening, and the third pipe opening and the fourth pipe opening respectively communicate with the main valve; and the first one-way valve is arranged between the pilot valve outlet and the air outlet pipe opening and is used for controlling the flow direction of fluid between the pilot valve outlet and the air outlet pipe opening. Through the technical scheme, the problem that reversing failures are prone to occurring in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of reversing valves, in particular to a four-way reversing valve. Background technique [0002] At present, the existing four-way reversing valve includes a main valve and a pilot valve. The main valve and the pilot valve are communicated through a capillary tube. The pilot valve is used to control the movement of the spool of the main valve to switch the flow port on the main valve. [0003] Such as figure 1 As shown, the existing four-way reversing valve is illustrated by taking the right reversing as an example. The pilot valve 2` introduces high-pressure gas into the left cylinder 11` of the main valve 1`, and the high-pressure gas pushes the piston 12` to move, and the piston 12 ' drives slide block 13 ' to move to the right. The slider 13` will move to the middle position of the slider seat during the movement to the right. At this time, the four connecting pipes of the main valve 1` are connected an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/065F16K31/124F15B1/02F15B13/02
CPCF16K11/0655F16K31/1225F16K31/1245F15B1/024F15B13/027
Inventor 韩润虎
Owner ZHEJIANG DUNAN MASCH CO LTD
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