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Diaphragm valve with diaphragm fracture indication

A technology for diaphragm valves and diaphragms, applied in valve devices, engine components, mechanical equipment, etc., can solve the problems of vulnerable parts, difficult to find, diaphragm rupture, etc., and achieve the effect of low cost, convenient disassembly and assembly, and easy replacement

Inactive Publication Date: 2018-10-23
SHANGHAI YIHE VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the ordinary secondary sealing diaphragm valve has a disadvantage: when the valve is in use, since the diaphragm is made of rubber, it is a vulnerable part. After a period of use, the diaphragm may rupture, and the medium will fill the valve. The cavity between the cover and the valve body, but it is not easy to find

Method used

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  • Diaphragm valve with diaphragm fracture indication
  • Diaphragm valve with diaphragm fracture indication

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0019] refer to figure 1 , figure 2 As shown, a diaphragm valve with diaphragm rupture indication of the present invention includes a valve body 1, a valve cover 4, a diaphragm 2, a valve disc 5, a valve stem 6, a valve stem nut 7 and a hand wheel 10, a valve body 1, a valve The cover 4 and the diaphragm 2 form the main body of the valve, which is composed of connecting bolts 16, connecting nuts 17 and gaskets 18 between them, forming a complete pressure boundary and realizing sealing with the outside world.

[0020] The diaphragm 2 is fixed in the cavity between the valve cover 4 and the valve body 1 , and the valve disc 5 is fixed on the diaphragm 2 , preferably, the two are fixed by diaphragm screws 3 . The valve stem 6 is fixedly connected to the valve disc 5 , for example, as s...

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PUM

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Abstract

The invention discloses a diaphragm valve with a diaphragm fracture indication. The diaphragm valve comprises a valve body, a valve cover, a diaphragm, a valve clack, a valve rod, a valve rod nut anda hand wheel, wherein the diaphragm is fixedly arranged in a cavity between the valve cover and the valve body; the valve clack is fixedly arranged on the diaphragm; the valve rod is fixedly connectedwith the valve clack; the valve rod nut sleeves the valve rod, and is in threaded connection with the valve rod; the valve rod nut extends out from the valve cover; the position, above the valve cover, of the valve rod nut is sequentially in threaded connection with the hand wheel and a locking nut; a through hole is further formed in the valve cover; the upper portion of the through hole is connected with an indicating box; an indicating rod is arranged in the through hole; and the indicating rod extends out of the indicating box. The diaphragm valve can be used for conveniently finding thefracture of the diaphragm.

Description

technical field [0001] The invention relates to a diaphragm valve, in particular, the invention relates to a diaphragm valve with diaphragm rupture indication. Background technique [0002] The biggest difference between the diaphragm valve and other valves is that it adopts no stuffing box structure, and the rubber diaphragm can completely isolate the corrosive medium in the flow channel from all driving parts, thus eliminating the "running, popping, dripping, and leaking" of common valves. and other disadvantages. The flow path of the diaphragm valve is smooth and the flow resistance is small, so a large flow can be obtained. Because the seal is a flexible rubber diaphragm. Therefore, it also has better sealing and minimum closing force. Diaphragm valve consists of valve body, bonnet, valve disc, valve stem, diaphragm and other driving parts. The opening and closing of the valve is achieved by rotating the hand wheel. The diaphragm valve is equipped with an indicating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00
CPCF16K37/0008
Inventor 陈刚徐家毛洪志兴洪志评洪政强
Owner SHANGHAI YIHE VALVE CO LTD