CN2619108Y

CN2619108Y - Air control valve

Info

Publication number: CN2619108Y
Application number: CN 03261637
Authority: CN
Inventors: 洪步林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-24
Filing date: 2003-05-24
Publication date: 2004-06-02
Anticipated expiration: 2013-05-24

Abstract

The utility model relates to a gas control valve. A flexible hose [2] is fixedly arranged in the flow channel of the valve body [1], the middle of the hose has a lichen structure, and both ends of the hose is hermetically combined with the valve body, an air sac [12] is arranged on the gap between the valve body and the hose, an air hole is arranged on the valve body to connect the air sac. Through the operation of pressure increasing or reducing to the air sac, the hose is conducted by expansion due to pressure loss, or cut by clamping due to pressure increase, thus the valve can realize flexible opening and closing to overcome a problem of actuator easy abrasion in rigid opening and closing. The utility model is simple in structure and much convenient in hose replacement.

Description

A kind of Air control valve

Technical field

The utility model relates to a kind of Air control valve that opens and closes with the pneumatic control valve door.

Background technique

At present, existing Air control valve mainly contains compositions such as pneumatic actuator, pilot line and valve.Its actuator mainly is that the to-and-fro motion by cylinder piston drives the butterfly plate of butterfly valve or ball valve core or other valve corresponding mechanism and carries out rigidity and open and close operation, make the sealing position easily because of friction damages, and complex structure cause changing difficulty of Sealing.

Summary of the invention

Open and close the problem that exists in order to solve above-mentioned Air control valve actuator rigidity, the utility model proposes and a kind ofly can carry out the flexible Air control valve that opens and closes.

A kind of Air control valve of the utility model, the liquid chunnel internal fixation of valve body has flexible sebific duct, and the sebific duct two ends connect with valve seal, and the gap between valve body and the sebific duct is an air bag, has the vent that communicates with air bag on the valve body.By air bag is reduced pressure or pressurized operation, make the distending conducting of sebific duct decompression or block because of pressurized clamps, can implement switching motion to valve.

Suction tude and outlet pipe are housed on the valve body of above-mentioned valve, and suction tude and outlet pipe communicate with air bag in the valve body by the vent on the valve body, and suction valve and outlet valve are housed respectively on suction tude and the outlet pipe.

In order to understand the air pressure of grasping in the valve body at any time, be equipped with on the valve body and measure pressure by air pressure table in the air bag.

For sebific duct is blocked easily, described sebific duct is special-shaped sebific duct, and the centre of sebific duct is flat structure, makes air pressure exert pressure from the position, plane, both sides at flat position, makes the sebific duct pressurized even, increases to block effect.

The utility model is owing to adopt the actuator of sebific duct as valve, control the distending of sebific duct or shrink the keying that realizes valve by air pressure, thereby make valve realize flexible the keying, the situation that actuator easily rubs and damages when not existing rigidity to open and close, go back the flow that the distending amount of can regulate sebific duct is come regulating valve by regulating the air pressure size, and simple in structure, it is also very convenient that sebific duct is changed.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is a position shown in Figure 1 sebific duct plan view.

Fig. 3 is along A-A line sectional view among Fig. 2.

Embodiment

By shown in Figure 1, the utility model Air control valve comprises valve body [1], flexible sebific duct [2], pilot line [11] and gas pressure source [10], sebific duct [2] is special-shaped sebific duct, its structure as shown in Figures 2 and 3, the centre is a flat structure, two ends are tubulose, the end extends radially into adpting flange and has attachment hole, sebific duct [2] is arranged in the fluid passage of valve body, two ends by gland [3] and clamping bolt [4] sealing and fixing at valve body [1] two ends, gap between valve body and the sebific duct is air bag [12], have the vent [13] that communicates with air bag in the middle of the valve body, and communicate with pilot line [11], pressure gauge [6] is arranged on the pilot line by pipeline [5], suction tude [9] and outlet pipe [14], suction valve [7] and outlet valve [8] are housed respectively on suction tude and the outlet pipe, and suction tude [9] communicates with gas pressure source [10].When outlet valve [8] is in opening state, liquid makes sebific duct [2] middle part distending by the pressure of self, and valve is in opening state; When this Air control valve need be closed, outlet valve [8] in the closing control pipeline [11], and open suction valve [7], the pressurized gas of gas pressure source [10] enter in the air bag [12] by suction tude [9] and pipeline [5], when gas pressure during greater than the hydrodynamic pressure in the sebific duct, shrink rapidly under the gas pressure effect of sebific duct in self elasticity and air bag and clamp and block liquid stream, closing velocity can be realized by the control suction valve, the pressure of gas can show by pressure gauge [6], thereby can regulate the distending amount of sebific duct and can regulate control to the flow of valve by regulating air pressure.

In order to prevent valve fluid compressing sebific duct when the conducting, make sebific duct tearing that valve body vent [13] is located, the valve interior wall of vent [13] both sides is provided with annular boss [15].When the complete distending of sebific duct, sebific duct flattened medial position is supported on the annular boss [15] of vent both sides, make compression area enlarge, and pressurized is even, thereby can protects sebific duct not to be torn.

For sebific duct is blocked easily, can be with the tube wall thickening at sebific duct [2] flattened medial position.

Claims

1, a kind of Air control valve is characterized in that the liquid chunnel internal fixation of valve body [1] has flexible sebific duct [2], and the sebific duct two ends connect with valve seal, and the gap between valve body and the sebific duct is air bag [12], has the vent [13] that communicates with air bag on the valve body.

2, valve according to claim 1, it is characterized in that being equipped with on the valve body suction tude [9] and outlet pipe [14], suction tude and outlet pipe communicate by the interior air bag [12] of vent on the valve body [13] and valve body, and suction valve [7] and outlet valve [8] are housed respectively on suction tude and the outlet pipe.

3, valve according to claim 2 is characterized in that being equipped with on the valve body pressure by air pressure table [6] in the measurement air bag.

4, according to claim 1 or 2 or 3 described valves, it is characterized in that described sebific duct [2] is special-shaped sebific duct, the centre of sebific duct is flat structure.

5, valve according to claim 4 is characterized in that described vent opens the centre at valve body, and the valve interior wall of vent both sides is provided with annular boss.