CN2048145U

CN2048145U - Self-closing valve

Info

Publication number: CN2048145U
Application number: CN 89207382
Authority: CN
Inventors: 徐宇工; 李萍
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-05-18
Filing date: 1989-05-18
Publication date: 1989-11-22

Abstract

The utility model discloses a self-closing valve, which relates to a water-cutting self-closing valve. The utility model which is composed of a valve body, a valve flap, a valve rod, a valve cap, a spring, and an upper and a lower control rods is arranged in front of the terminal valve (water faucet). The control of the valve is realized by the utility model according to different pressures when a pipe has water or not. When the pipe has water, the lower control rod is clamped in a lower positioning notch under the action of the water pressure, and a valve flap is in the position of normal opening. When the pipe has no water, the spring restoring force makes the lower control rod disengage from the outer positioning notch, and the valve flap falls on a closed position, and the upper control rod is in the upper positioning notch at the same time. Thereby, when the water is not supplied, the waste of water and flood accident caused by forgetting to close the terminal valve can be avoided.

Description

Self-closing valve

The utility model relates to a kind of end valve (water tap) water-stopping self-closing formula valve before that is arranged on.

At present, particularly before family's water tap a manually-operated gate is being set mostly before the branch line end valve door of tap water pipeline, its effect is when end valve door (water tap) leaks or damages, can close this manually-operated gate, opposite end valve (water tap) overhauls or changes, but this valve can not be controlled automatically, like this when people anhydrous and when forgetting shutdown side valve (water tap) at pipeline, because manually-operated gate can not be closed automatically, often cause the water waste when coming water once more, even cause flood.

But the purpose of this utility model is to provide a kind of alternative above-mentioned manually-operated gate and automatic close-type valve when pipeline is anhydrous.

The utility model is by valve body, flap, valve rod, spring, valve gap and last, lower control arm is formed, its valve rod is provided with Returnning spring, have on the valve rod, following locating slot, be equipped with on the valve body with last, following locating slot match on, lower control arm, controlling rod is for being equipped with the transversely movable bar of spring on it, lower control arm is that the anhydrous bar of controlling is arranged in the tube line, this bar can adopt from pipeline and draw a water cavity, substantially horizontal is provided with spring and piston, controlling rod is packed on the piston and drives, and also can adopt the bourdon tube and the spring sheet of drawing from pipeline to drive.

Working principle of the present utility model is: it is installed in end valve door (water tap) before, make it be in normally open, when pipeline has water, because the pressure of water, piston in the water cavity that pipeline is drawn or bourdon tube drive lower control arm and push ahead, lower control arm is stuck in the following locating slot of valve rod, and when pipeline is anhydrous, after ordering about lower control arm, moves by spring in the spring sheet of bourdon tube end or the water cavity, make it to withdraw from the following locating slot of valve rod, the downward landing of flap and valve rod, valve seat closure with body cavity, on this moment controlling rod under the effect of spring, be stuck in valve rod in the locating slot, realize self-locking, when pipeline comes water once more, can not be with flap jack-up, as opening once more, need the people will go up controlling rod and pull out, mention valve rod (flap).As overhaul end valve door (water tap) and also valve rod (flap) can be depressed throttle down.

Advantage of the present utility model is relatively simple for structure, the flap good sealing effect, and precise control, reliable can avoid forgetting when anhydrous because of tap water pipeline the waste or the flood of the water that shutdown side valve (water tap) causes.

Accompanying drawing 1 is piston self-closing valve (summary is with scheming);

Accompanying drawing 2 is piston self-closing valve opening state figure;

Accompanying drawing 3 is a bourdon tube self-closing valve;

Accompanying drawing 4 is bourdon tube self-closing valve opening state figure.

Embodiment 1 is piston self-closing valve as shown in Figure 1, valve body 1 is the cavity of feed-water end and waterexit end dislocation, be provided with the valve seat that matches with flap 2 in the cavity, flap 2 is made one with valve rod 3, valve rod 3 is a hollow stem, hollow cavity internal surface and valve rod 3 outer surfaces have locating slot and following locating slot, the sidepiece of valve rod 3 has the gap that controlling rod 4 is slided along bus, the end is had being contained on the valve body 1 with lower control arm 5 of wedge type end face, last controlling rod 4 is contained on the valve gap 6, spring 8 in valve rod 3 hollow cavities is placed under the controlling rod 4, suit little spring 7 on the last controlling rod 4, lower control arm 5 by the piston 9 in the water cavity of drawing 11 and spring 10 from pipeline on same horizontal line.Be provided with gland 12 on valve gap 6 tops, valve rod 3 tops are equipped with hand and are lifted button 13.

Embodiment's 2 bourdon tube self-closing valves, as shown in Figure 4, its basic structure such as embodiment 1, spring sheet 15 with pressure spring pipe 14 of drawing from pipeline and bourdon tube top substitutes water cavity 11 pistons 9 and spring 10, when pipeline has water, bourdon tube 14 dilatancies, spring sheet 15 is stuck in the following locating slot of valve rod 3, when anhydrous, bourdon tube 14 restores to the original state, spring sheet 15 withdraws from down locating slot, and valve rod 3 (flap) falls to closed position.

Claims

1, a kind of self-closing valve, form by valve body, flap, valve rod, spring, valve gap and last lower control arm, it is characterized in that valve rod and flap are one, have down locating slot on the valve rod, spring is housed on it, and valve body is provided with the flap that makes that matches with following locating slot and is in the lower control arm of normally open.

2, self-closing valve according to claim 1 is characterized in that lower control arm serve as reasons piston and spring driven bar in the water chamber that pipeline is drawn.

3, self-closing valve according to claim 1 is characterized in that lower control arm is the spring sheet that the pipeline pressure spring pipe of drawing drives.

4, self-closing valve according to claim 1 and 2, it is characterized in that also having on the valve rod be contained in valve gap on the last controlling rod that can laterally move and have spring match and go up locating slot.

5,, it is characterized in that also having on the valve rod and be contained in locating slot on the last controlling rod that can laterally move and have spring on the valve gap according to claim 1 or 3 described self-closing valves.