CN2230845Y

CN2230845Y - Fluid aiding close valve

Info

Publication number: CN2230845Y
Application number: CN 94218157
Authority: CN
Inventors: 李毅
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1996-07-10
Anticipated expiration: 2004-08-27

Abstract

The utility model relates to a fluid closure-aided control valve which is a new pipeline valve using the self pressure of fluid to push a piston to close a flow path. The utility model comprises three main parts of a valve body, a piston and a start-stop operating device. The utility model has the advantages of tight and reliable closure and easy and free operation. Compared with the existing valve, the utility model has the advantages of small mechanical abrasion, wide material selection range, long service life and low cost. The implementation of the utility model is favourable for developing and manufacturing multi-color, multi-type and multifunctional high-grade and durable valves.

Description

The fluid aiding control valve

The utility model belongs to pipeline valve, and the essential structure technical scope of valve nozzle (hereinafter to be referred as valve) is that a kind of fluid self pressure that can utilize promotes the essential structure technological scheme of the novel pipeline of piston, pass closed channel with valve.

At present,, divide, mainly contain these three kinds of stopcocks, gate valve, ball valve by the technical characteristics of its essential structure though the kind of valve is a lot.The subject matter that these three kinds of valves exist is: the mode of closing the fluid passage is science not; as closing of stopcock and gate valve; just need bigger steering force and mechanical support power could realize; in use; usually can be not closed completely and cause the waste of fluid; sometimes can damage valve member because of steering force is excessive again, cause closing malfunctioning.Then because of in the extruding of sealing, close the switching that logical ball is realized valve as for ball valve, so the valve member wearing and tearing are bigger by the brute force rotation.Therefore, their physical life is generally not long.And being difficult to use the nonmetallic material processing and fabricating, cost of material, processing cost are all higher.

The purpose of this utility model is to overcome the deficiency of the essential structure technology of above-mentioned valve, and a kind of essential structure technological scheme of fluid aiding control valve is provided, and the essential structure technology innovation that is beneficial to valve is regenerated.

The purpose of this utility model is achieved in that it is made up of valve body, piston and keying operation equipment three big major components.One influent stream critical point is arranged on the valve flowing channel, and crossing the critical point has one section suitable piston to make to open and close the runner of motion.The integral body that piston is made up of piston head and piston rod.Piston head is in the outside, influent stream critical point (fluid incoming road one side, down together) on the influent stream road, and its cross section is greater than the influent stream critical point, less than the cross section in influent stream road, and piston head is inboard can to closely cooperate with the outside, influent stream critical point, seals the influent stream critical point.Piston rod is a kind of flow path groove that has, shaft-like or the frame shape structure of the hard to bear keying operation equipment control of energy, be in the influent stream critical point on the side runner, and with flow path wall or other valve members as sliding bed, under the effect that opens and closes operation equipment and hydrodynamic pressure, can do straight reciprocating motion, when promptly opening, open and close operation equipment and promote piston head by piston rod, make the piston head inboard leave influent stream and close the interruption-forming gap, reach the purpose of opening stream; When closing, opening and closing operation equipment can either allow hydrodynamic pressure promote piston, can under the situation of no hydrodynamic pressure, drive piston again, make the piston head inboard seal the influent stream critical point again, and can prevent change in fluid pressure the time, the piston work relax that may cause, displacement realize closing of valve, avoid the generation of " run, drip, leak ".

Major advantage of the present utility model is: it is easier than opening, lighter to close, and close tight reliably, withstand voltage, be difficult for damaging valve member, mechanical wear is little, the material choice that is fit to making is big, comprise metal and nonmetal, help improving the technical quality level of valve, enlarge the usage range of valve, increase the function of valve, enrich the appearance and modeling of valve.

Accompanying drawing is a structural representation of the present utility model, and it comprises valve body 1, piston 2, opens and closes operation equipment 3.Arrow is represented the fluid motion direction.

Accompanying drawing one is a knob formula fluid aiding control valve, and it makes the turn-knob bar drive chicken-core-shape drive block (or eccentric shaft) promotion piston 2 in valve body 1 and open or seal the influent stream critical point by the operation to the knob handle, realizes the switching of valve;

Accompanying drawing two is push key type fluid aiding control valves, and it is logical exerts pressure to button and the elastic force return of button self to operation, makes the piston 2 that is connected on the drive link allow the piston head inboard leave or seal the influent stream critical point with opening and closing operation valve body 1 in, the switching of realization valve;

Accompanying drawing three is that closed type fluid helps the pass control valve, it is identical with the transmission principle of accompanying drawing one, different is opens and closes the residing position of operation equipment and since closed type fluid help the keying operation equipment that closes control valve valve go out the head piece place, so it is only applicable to duct end.

Enforcement ratio of the present utility model is easier to, it not only can be by reequiping existing valve, make the fluid aiding control valve of metal, and whole all available plastic productions of valve member, by injection, extruding or other method moulding, be assembled into the fluid aiding control valve of plastics then, even can also make valve body and part valve member with pottery or other nonmetallic material.As seen implement the utility model not only material be easy to get, and processing easily becomes.

Claims

1, the fluid aiding control valve, be that a kind of fluid self pressure that can utilize promotes piston, close the novel pipeline valve of closed channel, it comprises valve body 1, piston 2, open and close operation equipment 3, with other valve member, it is characterized in that: the integral body that piston 2 is made up of piston head and piston rod, the influent stream critical point can be sealed in the outside, influent stream critical point (fluid incoming road one side) that piston head is in the valve body 1, but do not block the influent stream road, fluid can pass through when being beneficial to piston and being in opening state, piston rod is a kind of the shaft-like of flow path groove or frame shape structure of having, be in inboard, influent stream critical point, can control by hard to bear keying operation equipment, and can in runner, do straight reciprocating motion, make the piston head inboard leave or to seal the influent stream critical point with opening and closing operation.