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Diaphragm valve and seat holder unit for diaphragm valve

A technology of retainer and diaphragm valve, applied in the direction of diaphragm valve, diaphragm, valve device, etc., can solve the problems of difficult valve seat replacement and inability to remove it, and achieve the effect of easy replacement and easy maintenance

Active Publication Date: 2014-04-23
FUJIKIN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the above-mentioned conventional technology, if the valve seat retainer is plastically deformed and cannot be removed, there is a problem that it is difficult to replace the valve seat.

Method used

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  • Diaphragm valve and seat holder unit for diaphragm valve
  • Diaphragm valve and seat holder unit for diaphragm valve
  • Diaphragm valve and seat holder unit for diaphragm valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Embodiments of the present invention will be described below with reference to the drawings.

[0035] figure 1 Showing one embodiment of the diaphragm valve of the present invention, the diaphragm valve 1 includes: a block-shaped valve body 2 having a fluid inflow passage 2a, a fluid outflow passage 2b, and a recess 2c opening upward; A cylindrical valve cover 3 screwed and extended upward; an annular valve seat 4 provided on the periphery of the fluid inflow passage 2a; a valve seat provided on the outer periphery of the valve seat 4 in the valve body 2 and holds the valve seat 4 The retainer 5; the diaphragm 6 that is pressed or separated from the valve seat 4 to open and close the fluid passage 2a; the valve stem 7 has a diaphragm pressing member 8 that presses the central part of the diaphragm 6 at the lower end so as to be able to move freely up and down. Insert into the bonnet 3 in the same way, and press and separate the diaphragm 6 relative to the valve seat 4 ...

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PUM

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Abstract

The present invention provides a diaphragm valve which facilitates seat replacement, and a seat holder unit for a diaphragm valve. The diaphragm valve (1) is provided with a retainer (12) that holds the seat holder (5) in place. The seat holder (5) holds a seat (4) and is detachably positioned with respect to the body (2). The retainer (12) is approximately cylindrical in shape, has an inward-facing flange part (22) that receives the outer peripheral edge of the seat holder (5), and can be detachably mounted to the diaphragm holding members (10, 11) while holding the seat holder (5).

Description

technical field [0001] The present invention relates to a diaphragm valve and a seat retainer unit for the diaphragm valve, and more particularly to a diaphragm valve in which a valve seat is detachably held by the seat retainer, and a seat retainer unit used in such a diaphragm valve. Background technique [0002] As a diaphragm valve, a diaphragm valve (Patent Document 1, etc.) is known, which includes: a valve body provided with a fluid passage; A valve seat holder that is detachably arranged on the valve body and holds the valve seat; a diaphragm that is pressed and separated from the valve seat to open and close the fluid passage; a diaphragm holding member that holds the valve seat with the diaphragm holding member The outer peripheral portion of the diaphragm is sandwiched between the devices; and the vertical movement mechanism that moves the diaphragm pressing member that presses the central portion of the diaphragm up and down. [0003] In the conventional diaphra...

Claims

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Application Information

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IPC IPC(8): F16K7/16
CPCF16K7/17F16K7/14F16K7/16
Inventor 北野太一筱原努山路道雄西村龙太郎
Owner FUJIKIN INC
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