CN2237156Y - Fixed valve plate diaphragm valve - Google Patents

Abstract

The utility model relates to a fixed valve plate diaphragm valve, which is jointly composed of a valve main body and a piston mechanism at the upper part of the valve main body, wherein, the valve main body is composed of a valve plate (2) and a valve plate (3) which are fixed in a valve body (1), a ring-shaped rubber diaphragm (4) and a ring-shaped pressing block (5) which are clamped between the valve plate (2) and the valve plate (3), etc. The utility model has the advantages of small size, light weight, labour saving for opening and closing, no leakage, reliable performance and long service life, and can be widely used in the flow regulation and the cut-off of the fluids.

Description

The board-like membrane valve of a kind of standing valve

The utility model relates to a kind of valve, the board-like membrane valve of specifically a kind of standing valve.

Existing stop valve, gate valve, butterfly valve etc. are made of valve body, motion valve plate, valve rod, drive unit etc.When closing and opening, produce bigger frictional force between valve plate and the valve body, sealing surface is easy to wear, causes to be not closed completely, to influence working life.

The purpose of this utility model provides a kind of board-like novel valve of the standing valve that rubs between valve plate and the valve body of eliminating.

The utility model is to realize like this, it is installed in by valve plate forms valve body in the valve body (1), piston mechanism by valve body top constitutes jointly, valve plate (2) and valve plate (3) are made of with the rib that is the distribution of concentric garden is crossing the rib that radially distributes, the centre of valve plate (2) and valve plate (3) accompanies annular briquetting (5), between valve plate (2) and valve plate (3) and annular briquetting (5), ring-shaped rubber barrier film (4) is arranged, have the duct in the rib of the vertical direction of valve plate (3) and communicate with the duct on its annular briquetting (5) that intersects, valve plate (2) and valve plate (3) are fixed in the valve body (1).

The utility model has the advantages that significantly:

Because valve plate (2) and valve plate (3) are fixed in the valve body (1), there is not friction between valve plate and the valve body, open and close laborsaving nothing and leak long service life.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the partial enlarged drawing of Fig. 1.

A kind of embodiment of the present utility model, as depicted in figs. 1 and 2, by the valve body that is divided into left and right sides two halves (1), valve plate (2), valve plate (3), one group of ring-shaped rubber barrier film (4), one group of annular briquetting (5), piston cylinder (6), piston (7), piston rod (8), nut (9), handwheel (10) liquid (gas) pressure pipe road interface formations such as (11).Ring-shaped rubber barrier film (4) forms alternate ring runner between any two.Form alternate annular sealed space, internal-filling liquid body or gas between ring-shaped rubber barrier film (4) and the annular briquetting (5).

The utility model both can be manual, also can surge or pneumatic.

In the time of manually, stifled liquid (gas) the pressure pipe interface (11) of going up.Clockwise rotate handwheel (10), piston rod (8) drives piston (7) and moves down, and the liquid of annular sealed space (oil or water) pressure raises, and compressing ring-shaped rubber barrier film (4) expands outwardly, and ring runner narrows down, and flow reduces.Continue to clockwise rotate handwheel (10), when the forward position of ring-shaped rubber barrier film (4) overlaps onto certain program, just can dam.Rotate counterclockwise handwheel (10), piston rod (8) drives on the piston (7) and moves, and the liquid of annular sealed space (oil or water) pressure reduces, and the pipeline inner fluid backs down ring-shaped rubber barrier film (4), and runner is opened.Continue to rotate counterclockwise handwheel (10), open degree will strengthen gradually, and flow is with cumulative.

Surge or when pneumatic, piston (7) can rest on arbitrary position in the piston cylinder (6).When pressure relief pipe was closed on connection liquid (gas) pressure pipe road, annular sealed space pressure raise, and forces ring-shaped rubber barrier film (4) to expand outwardly, and ring runner narrows down, and flow reduces.The through-current capacity on regulator solution (gas) pressure pipe road can be adjusted the speed degree that the flowing medium flow reduces.At any time close liquid (gas) pressure pipe road, then can keep certain through-current capacity.

When opening pressure relief pipe, when closing liquid (gas) pressure pipe road, said process can be reversed.

The utility model is through on probation, and is reliable, opens and closes laborsavingly, do not have leakage, can be widely used in the Flow-rate adjustment of fluid and dams.

Claims (1)

1, a kind of being installed in by valve plate formed valve body in the valve body (1), the board-like membrane valve of standing valve that constitutes jointly by the piston mechanism on valve body top, it is characterized in that valve plate (2) and valve plate (3) are made of with the rib that is the distribution of concentric garden is crossing the rib that radially distributes; Accompany annular briquetting (5) between valve plate (2) and the valve plate (3); Between valve plate (2) and valve plate (3) and annular briquetting (5), ring-shaped rubber barrier film (4) is arranged; Have the duct in the rib of valve plate (3) vertical direction, communicate with duct on the annular briquetting (5) that intersects with it; Valve plate (2) and valve plate (3) are fixed in the valve body (1).

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