CN2103709U - Adjustable delay self-closed water-saving valve - Google Patents

Abstract

The utility model relates to an adjustable delay self-closed water-saving valve (is disclosed in the specification) which is composed of a button, an elastic rubber cap, a piston, a piston cylinder, a valve rod, a sealing ring, a valve body, a valve plate, etc. The button is pressed, tap water flows to the upper cavity of the piston through a piston rod, the piston is pushed to downwards move, and a valve is opened; then the rubber cap pulls the piston to move upwards through the valve rod, and the control water on the upper cavity of the piston is forced to be exhausted by passing through a small throttling back hole and be delayed, and the adjustable delay self-closed water-saving valve is automatically closed; the throughflow area of the small throttling back hole can be adjusted. The utility model which has the functions of sufficiently delaying time and harmonically saving water and has the advantages of simple structure and easy fabrication can be used as a water valve of a public space like a station, a wharf, a train, etc. and can be used as a flushing valve for excrement sanitary pottery in a toilet and pee sanitary pottery in the toilet.

Description

Adjustable delay self-closed water-saving valve

The utility model relates to a kind of adjustable delay auto cut-off water saving valve (hereinafter to be referred as water-saving valve), and pattern is normally closed, opens the back and press setting and delay time, and finishes behind the one action self-closing.Be specially adapted to do the water valve from the beginning that public places such as the flushing valve of large and small sanitary ware for stool and station, harbour, train are used.

The Chinese patent of China Patent No. 8929848 has been introduced a kind of delay-self-closing flushing valve.It is inadequate using the delay function of this valve of proof.In addition, according to the product descritption introduction of this patent.During less than 0.05MPa, just do not open by valve at hydraulic pressure for this valve, promptly must could work under the pressure more than the 0.05MPa, even and in fact under the pressure of 0.1MPa, this valve also is difficult to proper functioning.

The purpose of this utility model just is to conceive a kind of work time-delay fully, and it is adjustable to delay time, and also can open the self closing stop valve of proper functioning under the very low situation of hydraulic pressure.

The utility model is that cylinder mouth O RunddichtringO is moved on to piston rod portion hollow hole upper oral part, increase the purpose that the throttling of backwater throttling arrangement reaches the work time-delay interior let out on the passage, and under the situation of low pressure, directly promote piston by valve rod to move downward, also can be valve open.

Fig. 1 is the schematic representation of the invention that provides of the above-mentioned patent No.; Fig. 2 is the schematic representation of the utility model water-saving valve.All be in off working state.

Their structure and working principle thereof are described respectively below in conjunction with two secondary accompanying drawings.

As shown in Figure 1, the water valve that the patent No. 8929848 is provided, mainly by valve rod (10 '), Capsule (4 '), piston with rod (8 '), piston cylinder (12 '), valve block (14 ') and valve body (15 ') and piston cylinder cover (20 ') are formed; Valve rod (10 ') is gone up suit O RunddichtringO (11 '); Let out passage in having and communicate with the drain chamber of valve body between piston cylinder and valve body, the hole that piston has bar portion to pass piston cylinder outer cover bottom connects with valve block (14 '), and valve block is contained in the valve port upside of valve body; The bar portion of piston has aperture to lead directly to piston upper chamber.

This valve is when off working state, and press water feeds piston upper chamber from piston rod portion aperture.Because the elastic force effect of Capsule (4 '), Capsule is strained valve rod (10 ') all the time, thereby O-ring seals (11 ') is pressed on the valve port conical surface of piston cylinder (12 '), outflow to making current not pass piston cylinder, no current flow in the whole system, and system pressure is in state of equilibrium.Thereby under first valve state, piston upper chamber and valve inleting water chamber (that is valve block (14 ') bottom) has equal unit pressure (tap water pressure).But because piston area is greater than the valve block area, so the downward pressure that is subjected on the piston is greater than upwarding pressure of being subjected on the valve block.This pressure official post piston sinks to the bottom, and by valve block valve port is sealed; Depress valve rod (10 ') during work, the tap water of piston upper chamber goes out outside the piston cylinder by the slit flow between piston cylinder and the valve rod, lets out the drain chamber discharge that passage flows to valve body (15 ') in the warp.The water of water-inlet cavity enters into piston upper chamber by piston rod portion aperture again and replenishes, and system produces flow.Press water from the valve inleting water chamber when piston rod portion aperture upwards flows, just produce the pressure loss, make the pressure of the pressure on piston top less than the valve block bottom, this pressure difference is lifted valve block together with piston, be that valve port on the valve body is opened, tap water just flows into drain chamber from water-inlet cavity, thus valve working.

As shown in Figure 2, this throttle valve comprises button (1), valve gap (3), Capsule (4), valve rod (5) and (10), cylinder cap (6), piston with rod (8), be contained in the seal ring (9) on the piston (8), be enclosed within the O RunddichtringO (11) on the valve rod (10), piston (12), rubber cushion (13), valve block (14), valve body (15).Valve body is divided into water-inlet cavity and drain chamber by port wall, the valve port axially bored line with advance, the drain opening axis normal, piston cylinder is contained in valve body top, its axis and valve port conllinear.Piston is contained in the piston cylinder, and the bar portion hollow of piston is passed the piston cylinder bottom and linked with valve block and rubber cushion.Cylinder cap is contained in piston cylinder top, forms variable volume chamber-time-delay control hydroecium (17) with piston and piston in cylinder wall, and valve rod (5) passes cylinder cap and links with the valve rod (10) that passes piston rod portion hollow hole from the bottom from top.Capsule is sleeved on the top shaft shoulder of valve rod (5).Valve gap connects with valve body.Button passes valve gap and connects with valve rod (5).Letting out passage in having between piston cylinder and valve body communicates with the drain chamber of valve body.This water-saving valve is characterised in that time-delay control hydroecium (17) water source blocking-up ring---O RunddichtringO (11) is sealed piston rod portion hollow cavity upper oral part by means of valve rod (10); Radial hole (18) is arranged on the valve rod (10), and axial bore and valve rod have axial bore on (5), radially throttle orifice (16) with in let out passage and communicate.The flow area of throttle orifice (16) is by adjusting screw (2) control and adjusting.

The valve block of this water-saving valve is contained in the valve port downside, upwards strains by means of the elastic force of Capsule on the one hand and pushes down valve port and normally closed, and the tap water pressure that makes progress simultaneously also helps valve block and valve port compresses, the leakage when preventing inoperative.

For low at tap water pressure, be not enough to overcome the friction between piston and the piston cylinder, this water-saving valve also can proper functioning under the situation of valve port of not opening, this water-saving valve is in when design, makes the height of stroke that button (1) presses hydroecium (17) might be greater than valve closing the time, like this, even the hydraulic pressure valve port of not opening from the beginning, also available valve rod (5) directly promotes piston and moves down, and valve port is opened proper functioning.

Let out in the seepage between the slit in order to prevent that press water from connecting with cylinder cap (6) etc. at valve rod (5), valve rod (10), at the inboard openning of cylinder cap place, on valve rod (10), be equipped with and have water shutoff film (7), when press water enters hydroecium (17), can be with the water shutoff mould flat and the cylinder cap mouth is shut.

In fact, Capsule (4) replaces with metal spring or other elastomers (as airbag), can satisfy the functional requirement of this valve equally.

This water-saving valve is when work, press the button (1), Capsule (4) distortion moves down, promoting valve rod (5) and (10) moves downward together with the O RunddichtringO, piston rod hollow upper oral part is opened, the press water that comes from the valve inleting water mouth just enters hydroecium (17) from the gap (19) between piston and the valve rod (10), because piston area is greater than the valve block area, the press water that enters hydroecium (17) just promotes piston and down moves together with valve block, valve port is opened, press water enters drain chamber from water-inlet cavity, flows into the water position, and valve enters work.After this, owing to remove after clicking in the power on the button, then Capsule (4) tries hard to recover the shape of oneself, by moving on spring band ovable valve stem (5) and (10), by O shape circle (11) the piston rod upper oral part is shut rapidly, press water can not enter hydroecium (17) again; Capsule continues to recover the shape of oneself, utilize elastic force to pass through to move on valve rod (10) the pulling piston, the radial hole (18) of water on valve rod (10) with hydroecium (17), axial bore on axial bore and the valve rod (5), radial hole (16) are extruded and are let out passage in the inflow, and valve just begins from closed procedure.Because the flow area of throttle orifice (16) is less, let out slowlyer in the water of hydroecium (17), promptly the speed of moving on the piston is slower.Like this, valve block just has a sufficient time-delay process Zi opening the back to self-closing, and valve block is self-closing at last.Water-saving valve work stops, and returns to off working state.

By said structure feature and principle Analysis, be not difficult to find out the water valve that the patent No. 8929848 is provided.When valve rod (10 ') by clicked unclamp after, under the elastic force effect of Capsule, O-ring seals will promptly be closed piston cylinder.The press water that comes up in the aperture of piston rod portion is full of piston upper chamber very soon.Stop to flow the pressure on the upper and lower unit area of piston restore balance very soon again (under tap water pressure); As previously mentioned, then valve block is closed valve port soon.Valve has stopped work soon, and water user's water requires to be far from reaching.And the utility model water-saving valve, valve be opened the back the self-closing time be for the water of control hydroecium from time control that throttle orifice is discharged, have sufficient delay function.Particularly the flow area of this water-saving valve throttle orifice (16) is by adjusting screw (2) control and adjusting.When screw (2) was down twisted, throttle orifice (16) turned down, and lets out time lengthening in the water in the hydroecium (17), and after promptly valve was opened, the operating time of valve (just valve block is from closed procedure) prolonged, thereby guaranteed fully time-delay, satisfied the needs of water; Otherwise when screw (2) was screwed on, throttle orifice (16) was opened greatly, and the time of letting out in the water in the hydroecium (17) is short, that is the valve working time (just valve block is from closed procedure) shortens.Thereby reach the purpose of water saving.

This water-saving valve has sufficient delay function in a word, and delay time is adjustable, even and under the very low situation of pressure, also can open valve and work by mechanical force, performance is quite reliable.

Claims (5)

1, a kind of adjustable delay auto cut-off water saving valve, comprise button [1], valve gap [3], Capsule [4], valve rod [5] and [10], cylinder cap [6], piston [8], be contained in the seal ring [9] on the piston [8], be enclosed within the O-ring seals [11] on the valve rod [10], piston cylinder [12], rubber cushion [13], valve block [14], valve body [15], valve body is divided into water-inlet cavity and drain chamber by port wall, the valve port axially bored line with advance, the drain chamber axis normal, piston cylinder is contained in valve body top, its axis and valve port conllinear, piston is contained in the piston cylinder, the bar portion hollow of piston, passing the piston cylinder bottom links with valve block and rubber cushion, cylinder cap is contained in piston cylinder top, and cylinder cap and piston and piston in cylinder wall are formed variable volume chamber-time-delay control hydroecium [17] jointly, and valve rod [5] passes cylinder cap and links with the valve rod [10] that passes piston rod portion hollow hole from the bottom from top, Capsule is sleeved on the top shaft shoulder of valve rod [5], valve gap connects with valve body, and button passes valve gap and connects with valve rod [5], lets out passage in having and communicate with the drain chamber of valve body between piston cylinder and valve body, control hydroecium [17] the water source blocking-up ring-O RunddichtringO [11] that it is characterized in that delaying time is sealed the hollow cavity upper oral part of the bar portion of piston by means of valve rod [10], radial hole [18] is arranged on the valve rod [10], and axial bore and valve rod have axial bore on [5], radially throttle orifice [16] with in let out passage and communicate, the flow area of throttle orifice [16] is by adjusting screw [2] regulating and controlling, and valve block [14] and rubber cushion [13] are contained in the valve port downside of valve body.

2,, it is characterized in that stroke that button (1) presses height greater than valve closing time control Water Room (17) by the water-saving valve of claim 1.

3, by the water-saving valve of claim 1 or 2, it is characterized in that water shutoff film (7) being housed on valve rod (10) at the inboard openning of cylinder cap (6) place.

4, by the water-saving valve of claim 1 or 2, it is characterized in that Capsule (4) is metal spring or air cushion.

5, by the water-saving valve of claim 3, it is characterized in that Capsule (4) is metal spring or air cushion.

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