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Corrosion resisting diaphragm valve

A diaphragm valve, corrosion-resistant technology, applied in the direction of diaphragm valve, diaphragm, valve details, etc., can solve the problems of poor corrosion resistance, complex internal structure, and not compact structure of the external mechanism of the diaphragm valve, so as to improve the life of the actuator and spare parts. Cost and assembly costs are reduced, compactness and integrity are guaranteed

Active Publication Date: 2017-08-18
KOSCN IND MFG SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing technology, the present invention provides a corrosion-resistant diaphragm valve, which solves the problem of weak corrosion resistance of the external mechanism of the diaphragm valve, complex internal structure, influence of the weir-shaped flow channel on the fluid, uncompact structure, and unsightly appearance, etc. problem, strong corrosion resistance, compact and beautiful overall structure

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a corrosion-resistant diaphragm valve includes a valve body 10 and a valve cover 20, a cavity is provided on the top of the valve body 10, and a pneumatic actuator is provided on the valve cover 20.

[0029] The space enclosed by the valve body 10 and the valve cover 20 is covered with a diaphragm 30 , the top of the diaphragm 30 is fixed by a fixed support block 50 , and a diaphragm pressing block 40 is arranged between the diaphragm 30 and the fixed support block 50 .

[0030] A piston 60 is arranged above the fixed support block 50, an upper piston shaft rod 61 and a lower piston shaft rod 62 are respectively arranged on the upper and lower sides of the piston 60, and the lower side of the lower piston shaft rod 62 passes through the fixed support block 50 and the diaphragm pressing block 40 Connected with the diaphragm 30 , a spring 80 is arranged above the piston 60 , and the upper side of the upper piston shaft 61 passes through the spri...

Embodiment 2

[0037] Such as figure 2 As shown, a corrosion-resistant diaphragm valve includes a valve body 10' and a valve cover 20', and a handwheel 80' is arranged above the valve cover 20'.

[0038] The space enclosed by the valve body 10' and the valve cover 20' is covered with a diaphragm 30', a valve stem 60' is arranged above the diaphragm 30', and upper and lower valve stem shafts 61 are respectively arranged on the upper and lower sides of the valve stem 60'. ' and the lower valve stem shaft 62', the lower valve stem shaft 62' passes through the diaphragm pressure block 40' and connects with the diaphragm 30', and the upper side of the diaphragm 30' is provided with a protruding pre-embedded screw 31', pre-embedded The upper side of the screw 31' is provided with external threads, the lower side of the lower valve stem shaft 62' is provided with internal threads, and the lower piston shaft 62' passes through the diaphragm pressing block 40' and is screwed to the pre-embedded scre...

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PUM

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Abstract

The invention discloses a corrosion resisting diaphragm valve. The corrosion resisting diaphragm valve is divided into a manual diaphragm valve and a pneumatic diaphragm valve, and comprises a valve body and a valve cover; a diaphragm piece is sleeved in space surrounded by the valve body and the valve cover, and is connected with a piston or a valve rod; the upper and lower ends of the piston or the valve rod are tightly connected with the valve cover and the valve body; and all parts in the diaphragm valve are all-plastic parts. The corrosion resisting diaphragm valve solves such problems as weak corrosion resistance of an external mechanism of the diaphragm valve, complicated internal structure, influence on a fluid by a weir runner, loose structure and no beauty, is high in corrosion resistance, and is compact and beautiful in overall structure.

Description

technical field [0001] The invention relates to a diaphragm valve, in particular to a corrosion-resistant diaphragm valve with all plastic parts. Background technique [0002] In the fields of gas, water containing particles and impurities, and acid-base chemicals, diaphragm valves are often used to separate the interior of the valve body from the driving parts. In these fields, the separated medium is often corrosive. Traditional metal valves Susceptible to corrosion, the flange structure of the external valve body and bonnet, the split design uses metal locking parts, the corrosion resistance is not strong, and it is easy to cause the aging of the external structural parts and cause leakage; Diaphragm valve with pneumatic actuator The internal structure is complex, there are many parts, some metal parts are easy to corrode, the failure rate is high, the service life of the valve is short, and the maintenance cost is high. In addition, the traditional structure is that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/17F16K27/02
CPCF16K7/17F16K27/0236
Inventor 张生洲
Owner KOSCN IND MFG SHENZHEN CO LTD