CN2781131Y

CN2781131Y - Stop valve of automatic retarded closing after opening

Info

Publication number: CN2781131Y
Application number: CN 200420097974
Authority: CN
Inventors: 孙永德
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2006-05-17
Anticipated expiration: 2014-11-26

Abstract

The utility model relates to a stop valve of automatic delaying time and closing after opening, which solve the problems that sealing can not be easily realized because of complicated structure and large driving components in the background art, media in a pipe can easily leak, a valve body can be corroded by rust and damaged, and maintenance and use are troublesome and waste. The main point of the technical scheme of the technical problem is the stop valve of automatic delaying time and closing after opening which is characterized in that a starting and stopping component is positioned between a sealing surface of a valve seat and a medium inlet of a valve. The starting and stopping component, a valve body and a valve cover form a B cavity which can be communicated with a C cavity of a medium outlet through a control valve and an A cavity of the medium inlet in real time. The control valve which is connected with a restoring spring and a valve rod of the control valve use an inner cavity of the starting and stopping component as a valve seat. A plurality of axial pressure relief grooves are arranged on the surface of the valve rod of the control valve. The utility model can be widely used in a kitchen, a toilet, etc. In addition, the utility model delays time, automatically closes, effectively solves the problem of the leakage of media, saves trouble which is caused by maintenance and replacement, and simultaneously saves resources.

Description

The stop valve that automatic time delay is closed after a kind of the unlatching

Technical field: the utility model belongs to a kind of stop valve, the stop valve that automatic time delay is closed after a kind of unlatching that particularly is suitable for using in places such as kitchen, toilet.

Background technique: the basic shape of existing all kinds of stop valve open-shut device is discs, and open-shut device is disposed between the media outlet of sealing surface of seat and valve, and the driving mode of open-shut device is that valve rod drives.The stop valve structure complexity of this technological scheme, driver part are big and be difficult for sealing, dielectric leakage in the easy generator tube, and corrosion damages valve, thus the trouble and the waste that bring maintenance and use.

Summary of the invention: the purpose of this utility model is exactly to propose a kind of technological scheme of opening the stop valve that the back automatic time delay closes, to solve that background technique exists because complex structure, the big and difficult sealing of driver part, dielectric leakage in the easy generator tube, corrosion damages valve body, thus the trouble and the waste that bring maintenance and use.Solving this technical problem the technological scheme that is adopted is: the stop valve that automatic time delay is closed after a kind of the unlatching, it is characterized in that open-shut device is between the medium import of sealing surface of seat and valve, open-shut device, valve body and valve gap form can be in good time through B chamber that control valve communicates with medium import A chamber and media outlet C chamber, the control valve of connection Returnning spring and control valve valve rod is a valve seat with the inner chamber of open-shut device, and control valve stem surface valve inside separates some axial gas pressure relief slots.Wherein, the angle β of the sealing surface of open-shut device and valve seat formation and valve seat center line is greater than 5 degree and less than 45 degree; On the set control channel adjusting screw is set between A chamber and the B chamber.The beneficial effect that the utility model and background technique comparison are had is: owing to adopt technique scheme, when being in closed condition, rely on the elastic force of Returnning spring and the pressure of medium, make control valve and its valve seat, open-shut device and its valve seat close, guarantee that like this medium does not leak; When the needs Open valve, push control valve valve rod opening controlling valve with hand, medium flows into the C chamber along the some axial gas pressure relief slots of control valve stem surface in the B chamber, makes A chamber and B chamber produce pressure reduction, A chamber medium promotes to move after open-shut device is lifted off a seat, and causes A chamber and the conducting of C chamber and Open valve; After stopping to push control valve, control valve returns to the origin-location and forms closed condition again under the elastic force effect of Returnning spring, thereby makes A chamber medium enter the B chamber through control channel, promotes the open-shut device throttle down; When needs are adjusted rate-of flow, ask in the time of just can realizing prolongation or shorten time-delay by adjusting screw, increase or reduce rate-of flow.So both realize automatic delay function, effectively solved the dielectric leakage problem again, saved the trouble that maintain and replace brought, saved resource simultaneously.

Description of drawings: Fig. 1 is the utility model structural representation.Fig. 2 is the partial enlarged drawing of open-shut device and seat interface position among Fig. 1.

Embodiment: with reference to figure 1, Fig. 2, the stop valve that automatic time delay is closed after a kind of the unlatching, open-shut device 6 is between the medium import of valve seat 9 sealing surfaces and valve, open-shut device 6, valve body 7 and valve gap 3 form the C chamber that can in good time communicate with the B chamber of medium import A chamber and media outlet, the control valve 5 of connection Returnning spring 4 and valve rod 8 is a valve seat with the inner chamber of open-shut device 6, the inner branch offered four axial grooves by valve rod 8 surperficial valves, the sealing surface that open-shut device 6 and valve seat 9 form equals 15 with the angle β of valve seat 9 center lines and spends, and on the set control channel 2 adjusting screw 1 is set between A chamber and the B chamber.

Claims

1, the stop valve that automatic time delay is closed after a kind of the unlatching, it is characterized in that open-shut device (6) is positioned between the medium import of valve seat (9) sealing surface and valve, open-shut device (6), valve body (7) and valve gap (3) form can be in good time through B chamber that control valve (5) communicates with medium import A chamber and media outlet C chamber, the control valve (5) of connection Returnning spring (4) and control valve valve rod (8) is a valve seat with the inner chamber of open-shut device (6), and the surperficial valve of control valve valve rod (8) inside separates some axial gas pressure relief slots.

2,, it is characterized in that the sealing surface of open-shut device (6) and valve seat (9) formation and the angle β of valve seat (9) center line spend greater than 5 degree and less than 45 according to the described a kind of stop valve that the back automatic time delay is closed of opening of claim 1.

3, according to claim 1 or 2 described a kind of stop valves that the back automatic time delay is closed of opening, it is characterized in that on the control channel (2) set between A chamber and the B chamber adjusting screw (1) being set.