CN2188148Y

CN2188148Y - Diaphragm water level controlling valve

Info

Publication number: CN2188148Y
Application number: CN 94225344
Authority: CN
Inventors: 苏恩远
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-21
Filing date: 1994-02-21
Publication date: 1995-01-25
Anticipated expiration: 2004-02-21

Abstract

The utility model relates to a diaphragm water level controlling valve which is mainly used for automatically controlling liquid level in building and industrial reservoir. The open and close of the diaphragm water level controlling valve is controlled by a diaphragm and the pressure difference of liquid. Therefore, compared with a piston type water level controlling valve, the utility model has the advantages of simple structure, easy manufacture, low cost, convenient maintenance and reliable operation.

Description

Diaphragm water level controlling valve

What the present invention relates to is a kind of automatic water level control valve that is used for controlling the wet pit liquid level height in building and industrial field.

The piston-type underwater level control valve of using is to establish a piston that can move up and down in valve body at present, piston is divided into two chambeies up and down with valve body, piston lower end closed water outlet, the piston upper end diameter is greater than lower end diameter, establish a throttle orifice on the piston, be communicated with the upper and lower cavity of piston, the piston upper and lower cavity is intake simultaneously.When piston upper chamber sluices,, piston is risen open outlet because the damping function upper cavity pressure of throttle orifice is lower than cavity pressure down.When piston upper chamber sealed, because the upper-end surface area is greater than the lower end area, pressured difference effect was pressed in piston valve cuts out.

The piston-type underwater level control valve is by the motion work of piston, piston is by rubber sealing, therefore in the water dirt, silt often stop up damping hole or be trapped in cushion rubber and piston around make the piston jam cause fault, it is very inconvenient valve can only to be decomposed repairing after breaking down, construct also more complicated in addition, cost is higher.

The purpose of this utility model provides a kind of diaphragm type altitude valve, replaces piston with barrier film, overcomes the shortcoming of piston-type underwater level control valve, and simple in structure, and cost is low, is convenient to maintenance.

The purpose of this utility model is achieved in that has a dividing plate that valve body is divided into water-inlet cavity and water chamber in valve body, and a valve seat is arranged on the dividing plate.A valve gap is arranged at the top of valve body, connects with valve body by screw.A passage that is communicated with water-inlet cavity is arranged in the valve gap, establish an one-way throttle valve on passage, a stopcock is arranged before single-phase throttle valve, also have a discharge opening on the valve gap, this discharge opening is by a float valve control.

Accompany a barrier film that can move up and down between valve body and valve gap, the motion of barrier film is guided by the axis of guide, and it is divided into two chambeies up and down with valve body and valve gap, and diaphragm center has a flap to cooperate the switching of control valve with valve seat on the valve body dividing plate.

There is the lower end of a bottom flange closed valve lower end of valve body, connects with valve body with screw, and the axis of guide slides in the center hole of bonnet and bottom flange.

When the discharge opening on the valve gap sluiced, because throttle valve is unidirectional, releasing smoothly of barrier film epicoele made the pressure of epicoele be lower than cavity of resorption, and rising at the hydraulic action lower diaphragm plate makes opening of valves.When the discharge opening on the valve gap is closed and since hydraulic action in the power of diaphragms greater than following, under hydraulic action, valve cuts out, at this moment because the effect of throttle valve, the piston upper chamber water inlet be slowly valve close very steady.

Owing on valve gap, establish a stopcock before the throttle valve passage, therefore can the cut-out tap valve when throttle orifice stops up take out throttle valve at any time and clear up.Owing to adopt barrier film to do switching element, therefore eliminate the jam phenomenon, structure is also fairly simple.

Below in conjunction with drawings and Examples the utility model is further specified:

Border figure is the longitudinal sectional view of this enforcement concrete structure.

1 is screw in the accompanying drawing, and 2 is bottom flange, and 3 is the axis of guide, and 4 is sealing gasket, and 5 are O shape ring, 6 is valve body, and 7 are following lining, and 8 is clamping pad, and 9 is rubber cushion, and 10 is O shape ring, 11 is valve seat, and 12 is filter screen, and 13 is flap, and 14 is nut, and 15 is clamping pad, 16 is barrier film, and 17 is hollow pin, and 18 are the damping seat, and 19 is valve gap, 20 is one-way throttle valve, and 21 are O shape ring, and 22 is stopcock, and 23 is differential, 24 is filter screen, and 25 is throttle valve body, and 26 is last lining, and 27 is screw.

Valve body 6 centers have a dividing plate that valve body is divided into the water-inlet cavity of left end and the water chamber of right-hand member, have a center hole that water-inlet cavity and water chamber are communicated with on the dividing plate, and a valve seat 11 is arranged in the center hole, are screwed on the dividing plate with screw thread, by 10 sealings of O shape ring.A valve gap 19 is arranged at the top of valve body, connect with valve body with screw 27, the left end of valve gap has a vertical hole to communicate with water-inlet cavity, also have a transverse holes to communicate with the valve gap inner chamber on the valve gap by one-way throttle valve 20, and communicate with the discharge opening of lid Xiang Duan simultaneously, in vertical hole and transverse holes infall a stopcock 22 is arranged, be screwed on the valve gap 19, by 21 sealings of O shape ring with differential 23.Cut-out tap valve 22 can cut off the path of throttle valve and discharge opening and water-inlet cavity, at this moment can pull down 25 pairs of throttle valve 20 of throttle valve seat and keep in repair.

Accompanying barrier film 16 in the middle of valve body and valve gap also separates the inner chamber of the water-inlet cavity of valve body and valve gap.There is a flap 13 at the diaphragm center place, and rubber cushion 9 and clamping pad 8 and 15 are arranged on the flap, is through together with the axis of guide 3, and is fastening with nut 14.The lower end of valve body has bottom flange 2 usefulness screws 1 to connect with valve body, by 5 sealings of O shape ring.The upper and lower end of the axis of guide slides in the

lining

26 and 7 of valve gap and bottom flange center hole, guides moving up and down of barrier film.

Solid matters such as filter screen 12 can the elimination stone, wooden unit prevent to be stuck on the flap, and filter screen 24 can the elimination silt particle for fie screen, prevent to stop up the throttling pore of throttle valve.

The discharge opening of valve gap upper end communicates with float valve or the solenoid valve in being located at wet pit.(not drawing in the accompanying drawing)

This valve is work like this: float valve is opened when the wet pit water surface descends, because being connected with float valve, the discharge opening on the valve gap begins to sluice, at this moment one-way throttle valve 20 rises, the water of valve gap inner chamber releases smoothly, make the pressure of barrier film epicoele be lower than cavity of resorption, barrier film and flap together rise, and valve is in opening state water filling in the pond.Discharge opening is closed after the fills with water of pond, at this moment by the throttle valve on the valve gap to the slow water-filling of barrier film epicoele, when barrier film upper and lower cavity pressure is identical, because a part of area is at water outlet below the barrier film, therefore the power of hydraulic action on barrier film top moves downward barrier film greater than the bottom, and flap is pressed on the valve seat; Valve is in closed condition.

Claims

1, a kind of diaphragm type altitude valve, this valve has a valve body, there is a dividing plate that valve body is divided into water-inlet cavity and water chamber in the valve body, there is a valve seat to be communicated with water-inlet cavity and water chamber on the dividing plate, a valve gap is arranged at valve body top, there is a bottom flange to connect and keep sealing with valve body with screw below, it is characterized in that: between valve gap and valve body, accompany a barrier film that can move up and down, it is divided into two chambeies up and down with valve body and valve gap, the motion of barrier film guides in bonnet central bore by the axis of guide, diaphragm center has a flap to cooperate with valve seat in the valve body, be provided with an one-way throttle valve and a discharge opening in the valve gap, and be communicated with water-inlet cavity and barrier film epicoele, establish a stopcock on the intake tunnel before one-way throttle valve.