CN1108475C

CN1108475C - Automatic on-off valve

Info

Publication number: CN1108475C
Application number: CN00118216A
Authority: CN
Inventors: 李慧岭; 马和玉
Original assignee: 李慧岭
Current assignee: Shanxi Huayi Industry Co., Ltd.
Priority date: 2000-05-31
Filing date: 2000-05-31
Publication date: 2003-05-14
Anticipated expiration: 2020-05-31
Also published as: CN1272603A

Abstract

The present invention relates to a self-aid on-off valve which comprises a valve body with a fluid inlet and a fluid outlet, and a valve cover connected with a flange of the valve body, wherein a direction selecting plug valve is arranged on the valve cover, and the outlet of the direction selecting plug valve is communicated with the inner cavity of the valve body; pressure guide holes used for respectively being communicated with the fluid inlet, the fluid outlet and the direction selecting plug valve are arranged on the valve body and the valve cover; an extending body of the fluid outlet, which points to the upper part of the valve body, is arranged in the valve body; a flashboard is arranged on the extending body, and the flashboard can be composed of an inner core formed by a coiled steel bar and an outer rubber layer coating the inner core, and can also be composed of a steel plate and rubber fixed to the steel plate. The valve of the present invention has the advantages of novel and reasonable structure, little abrasion and long service life and is suitable for wide liquid media.

Description

Automatic on-off valve

Technical field

The present invention relates to a kind of valve, be specially automatic on-off valve.

Background technique

Existing valve is made of the valve opening on valve body and the valve body, closing mechanism device usually, includes screw mandrel in unlatching, the closing mechanism device, finishes the opening and closing of valve by the motion of screw mandrel.Existing valve easily gets rusty owing to screw mandrel, thereby influences the working life of valve.Moreover unlatching, the long-term use of closing mechanism device easily produce and wear and tear, and cause valve seal not tight, produce weeping.Chinese patent 88212853.1 discloses a kind of flowing medium of being carried that utilizes as the valve that opens and closes power source, though it has the function with little Torque Control valve open and close, but its valve body structure has limited the fluid inlet/outlet of valve can only be in a direction, for example the fluid output of its valve can not be downward, like this, the structure that the has limited valve modification of fluid output direction particularly.The on-off action parts of this valve such as barrier film, flap etc. do not have the switching adjustability that can realize Flow-rate adjustment.

Summary of the invention

The present invention provides a kind of valve with improved new structure for solving the problem that prior art exists, and is specially automatic on-off valve.

The present invention adopts following measure to realize: this automatic on-off valve comprises and has fluid and advance, the valve body of outlet, have respectively to advance in the upper-end surface of valve body with fluid, the pressure guide hole that outlet communicates, valve body top is provided with the valve gap that connects with valve flange, valve gap middle part is provided with choosing that outlet communicates with body cavity to stopcock, valve gap and contacting of valve body have on the end face respectively with valve body on pressure guide hole match and merge and select the pressure guide hole that communicates to stopcock, between valve body and valve gap, be fixed with flashboard, be provided with the fluid output extending body that points to valve body top in the valve body, flashboard is positioned at the inlet top of extending body, and flashboard is made of the inner core of steel bar dish one-tenth and the rubber outer of coated inner core.Valve is according to different needs, the importer of its fluid also can be vertical mutually to can be in the same way with Way out, and the water outlet extending body in the valve is bending extension body or vertical extending body accordingly, but all need extend to the top of valve body, so that flashboard is fixing.The said structure of this valve has formed a cavity independently with flashboard top, and the hydrodynamic pressure in it changes (being called the transformation chamber) with choosing to the position of stopcock is different, thereby forms pressure reduction on the two sides of flashboard, realizes unlatching, the closure of valve.

Valve mechanism novelty of the present invention, reasonable, not easy to wear, long service life.It is extensive to be suitable for flowing medium.And than prior art, this valve can make the inlet/outlet direction of fluid vertical mutually, enlarges its using scope.This valve also can be realized the adjusting of rate of discharge.

Description of drawings

Fig. 1 is an appearance assumption diagram of the present invention;

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

Fig. 3 is the structural drawing of valve body;

Fig. 4 is the A-A sectional view of Fig. 2;

Fig. 5 is the B-B sectional view of Fig. 2;

Fig. 6 is flashboard structure figure;

Fig. 7 is flashboard core arrangement figure;

Fig. 8 is the valve mechanism figure with another kind of flashboard structure;

Fig. 9 is the valve structural drawing with another kind of flashboard structure;

Embodiment

Automatic on-off valve, comprise and have fluid and advance, outlet (1), (2) valve body (3), have respectively to advance in the upper-end surface of valve body with fluid, outlet (1), (2) pressure guide hole that communicates (6), (7), valve body top is provided with the valve gap (8) that connects with valve flange, valve gap middle part is provided with choosing that outlet communicates with body cavity to stopcock (10), valve gap and contacting of valve body have on the end face respectively with valve body on pressure guide hole (6), (7) match and merge and select the pressure guide hole (12) that communicates to stopcock, (13), between valve body and valve gap, be fixed with flashboard, be provided with the fluid output extending body that points to valve body top in the valve body, flashboard is positioned at the inlet top of extending body, and flashboard is made of the inner core (5) of steel bar dish one-tenth and the rubber outer (15) of coated inner core.At hydrodynamic pressure hour, the flashboard that the present invention is positioned at fluid output extending body top can constitute by steel plate 20 with the fixing rubber 21 of steel plate, and this is the constructional variant that draws easily under the enlightenment of claim of the present invention.When hydrodynamic pressure is big, can adopt above-mentioned flashboard structure, simultaneously, be the flashboard that cooperates this kind structure pressure-bearing, be provided with supporting rib 14 at the inlet of fluid output extending body and with the adjacent space of valve body at big hydrodynamic pressure situation lower flashboard.Steel bar in this flashboard will have certain tightness when the dish knot, make flashboard guarantee certain intensity, simultaneously, also will leave certain free gap, makes flashboard have certain flexibility, therefore, during steel bar dish knot suitable tightness will be arranged.For preventing that the inner core that the steel bar dish becomes from getting rusty, and scribbles oiling agent etc. on the steel bar.The inner core of this flashboard also can be become by coil of wire, perhaps by other have certain flexibility, material that again can bearing certain pressure after coiling such as plastic strip etc. coil.For being provided with reinforced layer in the rubber outer of the coated inner core of gaining in strength, the flashboard of this kind structure can be realized the adjusting of rate of discharge.Present embodiment has been selected fluid inlet/outlet valve body in the same way for use, and therefore, the outlet extending body in it is the bending extension body---extend elbow 4.Fluid inlet and outlet of the present invention is all made flange-like, is convenient to and the connecting of fluid circuit.Its working procedure is as follows: when valve is in closed condition, choosing communicates with pressure guide hole 12,6 to stopcock 10, at this moment, the transformation chamber of flashboard top communicates with fluid inlet, outlet extending body inlet is identical with flashboard part (rubber in the flashboard of another kind of structure) upper and lower pressure of the adjacent space top of valve body, and the pressure above the flashboard part (steel plate in the flashboard of another kind of structure) of outlet extending body inlet top is fluid inlet pressure, be outlet pressure below, because inlet pressure is greater than outlet pressure, thereby flashboard is compressed valve closing.When needing Open valve, to select to stopcock Rotate 180 degree, it is communicated with

pressure guide hole

13,7, at this moment, the transformation chamber of flashboard top communicates with fluid output, the suffered hydrodynamic pressure in flashboard part (steel plate in the flashboard of another kind of structure) above and below of outlet extending body inlet top is identical, and the flashboard part (rubber in the flashboard of another kind of structure) of outlet extending body inlet and the adjacent space top of valve body above be subjected to fluid output pressure, be subjected to fluid inlet pressure below, thereby with this part jack-up, drive whole flashboard and rise, realize the unlatching of valve.When needing with valve closing, to select again to stopcock Rotate 180 degree, the transformation chamber is communicated with fluid inlet, be subjected to fluid inlet pressure above the flashboard, at this moment, the continuous discharge owing to fluid below the flashboard forms a funnel shaped low pressure area, make pressure above the flashboard greater than following pressure, flashboard is depressed, made it be in closed condition, realize the closure of valve.Flashboard with core arrangement can be realized the adjusting of fluid flow, its concrete working procedure is: when needs are opened valve by required part, at first, make choosing to stopcock moment and valve export conducting, to select fast then to stopcock and rotate 90 degree, stopcock is not communicated with its left and right sides pressure guide hole, because when the quick conducting of stopcock and valve export, fluid section in the transformation chamber is discharged through valve export, at this moment, pressure is different up and down for flashboard part between extending body and the valve body, fluid upwards pushes up this part flashboard, and the flashboard that makes this kind have certain flexibility is opened along the extending body ingress edge, and the flashboard part at extending body inlet center is pressed to supporting rib under the effect of transformation cavity pressure, whole flashboard is partly opened, thereby realizes the Flow-rate adjustment of valve.

Claims

1, a kind of automatic on-off valve, comprise and have fluid and advance, outlet (1), (2) valve body (3), have respectively to advance in the upper-end surface of valve body with fluid, outlet (1), (2) pressure guide hole that communicates (6), (7), valve body top is provided with the valve gap (8) that connects with valve flange, valve gap middle part is provided with choosing that outlet communicates with body cavity to stopcock (10), valve gap and contacting of valve body have on the end face respectively with valve body on pressure guide hole (6), (7) match and merge and select the pressure guide hole (12) that communicates to stopcock, (13), between valve body and valve gap, be fixed with flashboard, it is characterized by: be provided with the fluid output extending body that points to valve body top in the valve body, flashboard is positioned at the inlet top of extending body, and flashboard is made of the inner core (5) of steel bar dish one-tenth and the rubber outer (15) of coated inner core.

2, automatic on-off valve as claimed in claim 1 is characterized by: be provided with supporting rib (14) at the inlet of fluid output extending body and with the adjacent space of valve body.

3, as claim 1,2 described automatic on-off valves, it is characterized by: the inner core (15) that constitutes flashboard is become by coil of wire.