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Diaphragm valve for low pressure opening

A diaphragm valve, low pressure technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of diaphragm valve can not be opened, incomplete efficiency, low and other problems, and achieve the effect of improving the efficiency of water flow

Active Publication Date: 2017-07-21
新疆远达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-pressure opening diaphragm valve to solve the technical problem of inefficiency caused by the diaphragm valve being unable to open due to low water pressure or incomplete opening

Method used

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  • Diaphragm valve for low pressure opening
  • Diaphragm valve for low pressure opening
  • Diaphragm valve for low pressure opening

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Embodiment Construction

[0029] 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. 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.

[0030] Such as figure 1 As shown, the present invention provides a diaphragm valve opened at low pressure, including a valve body 10, the valve body 10 is provided with an inlet chamber 11 and an outlet chamber 12 connected to each other; a valve cover 13 is arranged on the valve body 10; a sealing seat 14, It is arranged between the inlet cavity 11 and the outlet cavity 12; the diaphragm 21 is arranged between the valve body 10 and the valve cover 13, and the firs...

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Abstract

The invention provides a low-pressure opening diaphragm valve. The low-pressure opening diaphragm valve comprises a valve body, a valve cover, a seal base, a diaphragm, a valve cavity base and a water way convertor, wherein the valve body is provided with an inlet cavity and an outlet cavity communicated with the inlet cavity, the valve cover is arranged on the valve body, the seal base is arranged between the inlet cavity and the outlet cavity, the diaphragm is arranged between the valve body and the valve cover, a first control cavity is formed between the diaphragm and the valve cover, the valve cavity base is arranged in the valve body, a second control cavity is formed between the diaphragm and the valve cavity base, the diaphragm is connected with a main valve disc through a valve rod, the valve rod is sleeved with the valve cavity base, and the main valve disc is matched with the seal base in a sealed mode; the water way convertor is located at the outer side of the valve body and communicated with the first control cavity, the second control cavity and the inlet cavity. As the first control cavity, the second control cavity and the inlet cavity are communicated with the water way convertor, perfusion and evacuation actions of the first control cavity and the second control cavity are controlled, the diaphragm valve can be opened or closed under the low-pressure working condition, and the water flow passing efficiency of the diaphragm valve is improved.

Description

technical field [0001] The invention relates to the field of diaphragm valves, in particular to a diaphragm valve opened by low pressure. Background technique [0002] At present, the diaphragm valve is connected to the compression part with an elastic diaphragm, and the compression part is moved up and down by the valve stem. When the compression part rises, the diaphragm is lifted high to form a passage. Physically, the valve is closed. This valve is suitable for breaking and throttling. [0003] In farmland irrigation, the water pressure of irrigation water is generally about 1400kP. Due to the low water pressure, the existing diaphragm valve cannot be opened or opened incompletely, resulting in low efficiency of farmland irrigation. Contents of the invention [0004] The purpose of the present invention is to provide a low-pressure opening diaphragm valve to solve the technical problem of inefficiency caused by the diaphragm valve being unable to open due to low wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/12F16K1/32
CPCF16K1/36F16K31/12
Inventor 张凡
Owner 新疆远达科技有限公司
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