CN2163275Y

CN2163275Y - Leakage-proof automatic stop valve

Info

Publication number: CN2163275Y
Application number: CN 93204958
Authority: CN
Inventors: 周立超
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-24
Filing date: 1993-02-24
Publication date: 1994-04-27
Anticipated expiration: 2003-02-24

Abstract

The utility model relates to a leakage-proof automatic stop valve, which is mainly composed of a valve casing, a valve body, an opening stopping arm, a float, a guide rod, a water leakage stop valve, a handle reset spring, a valve cover, a handle, etc. The utility model is characterized in that a casing body is provided with a valve seat in a processing way, the valve body is connected with the guide rod in a sliding way, the opening stopping arm is connected with the float into one body, and a fixing shaft is hinged on the valve cover. The utility model realizes the function that when the water supply is cut off and people forget to close a water tap after opening the water tap, the automatic stop can be carried out, and the accident of the escape of a large quantity water when the water is supplied again under the condition that no one is at home can be prevented; the double action that the escape of water can be avoided, aircan be prevented from going into a water supply pipeline (the corrosion is alleviated) can be played thereby.

Description

Leakage-proof automatic stop valve

The utility model is the anti-air inlet automatic stop valve of a kind of tap water running prevention, opens in the time of can preventing because of tap water cut-off that the water tap of forgetting to close enters air and cause the accident of metalling run out when supplying water once more.

Water is irreplaceable valuable natural resources, be one of mankind's material conditions of depending on for existence and development, China is water resources country not more than needed, water resources only accounts for world occupancy volume per person's 1/4th per capita, nearly 300 urban water shortages in national according to statistics 467 cities, nearly 50 city serious water shortages, insufficient water is having a strong impact on the expanding economy and the people's daily life, therefore, using water wisely has become the cardinal task of national people and governments at all levels.At present, the enterprises and institutions in a lot of cities have adopted the measure of Timing water supply season in lack of water, reduced total consumption of water to a great extent, played tangible water-saving result, but because Timing water supply, often the tap of fetching boiling water is not forgotten to close because of having water, when supplying water once more again because of family in the unmanned accident of metalling run out that causes, the little water resources of then having wasted, greatly then cause the family's property loss, the building person of leaking is more arranged, make us especially suffering untold misery, therefore, a kind of anti-automatic stop valve of metalling run out of invention has become one of steady problem to be solved.

Given this, the inventor utilizes law of buoyancy to develop the anti-automatic stop valve of metalling run out, thereby, make the tap of fetching boiling water when cutting off the water forget to close, not metalling run out when supplying water becomes a reality again, and has played when stopping to supply water the function of not air inlet in the pipe simultaneously, thus the corrosion that has slowed down water pipe.

Describe in detail with reference to the accompanying drawings

Accompanying drawing 1 is a sectional arrangement drawing of the present utility model

Be processed with valve seat (4) with reference to accompanying drawing 1 at housing (1), valve body (2) is slidingly connected with guide post (5), arm (8) is opened in resistance and float (7) is connected as a single entity, linked on valve gap (3) by dead axle (17), handle (11) adopts the slide bar stops to connect by pull bar (6) with the transverse arm of float (7). At housing (1) water pouring air shuttle valve (10) is housed, water pouring air shuttle valve (10) combines as a whole with insurance float (9).

Guide post (5) is installed on the valve gap (3), and at its top hinge dress handle (11), between handle (11) and valve gap (3) handle return spring (12) is housed. Between pull bar (6) and valve casing (3) airtight and watertight padding (16) is housed, valve gap (3) is connected as a single entity by bolt (13) with housing (1), and is processed with gas thread (14) and gas thread (15) at water inlet interface and the water outlet mouthpiece of housing (1).

When normal water, housing is full of water in (1), and float (7) floats, and the right pendulum of arm (8) one angle is opened in resistance, and valve body (2) can move freely up and down along guide rod (5) with the size of water consumption, and this anti-automatic stop valve of metalling run out is inoperative this moment.

When user's tap of when cutting off the water, fetching boiling water, because negative pressure in the pipe, make the water in the housing (1) rush down back water supply line with fast speeds by water pouring choke valve (10), the user in time closes water tap as this moment, and then float (7) does not still fall, and this valve is still inoperative, if but the user is when shutting water tap because of not having water to forget, then after 20 seconds to 1 minute because drawdown in the valve casing, and the float that makes (7) falls, and drives resistance and opens arm (a 8) left side and put the position shown in the accompanying drawing 1.When supplying water once more,, thereby played anti-function of metalling run out owing to valve body (2) can not be opened, both made at valve body (2) poorly sealed, when being full of water in the housing,, thereby make resistance open arm (8) self-locking because the valve body (2) of this valve has produced enough big lift under effect of water pressure; Because the uplift of float (7) is much smaller than self-lock force, so that this valve also can reliably working under poorly sealed situation.(a small amount of weeping only occurring) is because insurance float (9) just can float and cut out water pouring choke valve (10) charge into low amounts of water in valve casing after, thereby in use prevented to rush down the leakage phenomenon by this channel, both satisfy the water saving requirement thereby played, guarantee the safety effect of this valve reliably working again.

When the user when the anti-automatic stop valve of metalling run out is closed, need water, as long as firmly just can under pull bar (6) acts on, overcome to hinder and open the self-lock force that arm (8) and valve body (2) produce owing to hydraulic pressure by lower handle (11), make resistance open the right pendulum of arm (7), thereby valve body (2) is opened under hydraulic action rapidly, water enters in the housing and float (7) is risen, supply water and recover normal, handle (11) is return under handle return spring (12) effect, thereby has guaranteed to cut off the water and water tap is opened this valve reliably working when forgetting to close in next time.

Automatic stop valve was simple in structure owing to should anti-metal run out, need not other electric equipment control, easy to use, when having reliable leakage proof function, have concurrently and stop air to enter water supply line, play the effect that slows down corrosion, single cost only is about 1.5 times of common stop valve (same caliber), thereby is a kind of comparatively ideal anti-equipment of metalling run out, can be widely used in family and public place, its economic benefit and social benefit are significant.

Claims

1, a kind ofly opens the anti-automatic stop valve of metalling run out that arm, float and handle etc. are formed by housing, valve gap, valve body, resistance, it is characterized in that on housing (1), being processed with valve seat (4), valve body (2) is slidingly connected with guide rod (5), arm (8) is opened in resistance and float (7) is connected as a single entity, linked on valve gap (3) by dead axle (17), handle (11) adopts the slide bar stops to connect by pull bar (6) with the transverse arm of float (7).

2, the anti-automatic stop valve of metalling run out according to claim 1 is characterized in that being equipped with water pouring choke valve (10) on housing (1), and water pouring choke valve (10) combines as a whole with insurance float (9).

3, the anti-automatic stop valve of metalling run out according to claim 1 and 2 is characterized in that guide rod (5) is installed on the valve gap (3), and at its top handle (11) is housed, and between handle (11) and valve gap (3) handle return spring (12) is housed.

4, according to claim 1 or the 2 or 3 described anti-automatic stop valves of metalling run out, it is characterized in that between pull bar (6) and valve casing (3), stuffing box packing (16) being housed, valve gap (3) and housing (1) are connected as a single entity by bolt (13), and are processed with pipe thread (14) and pipe thread (15) on the water inlet interface of housing (1) and water outlet interface.