CN87215331U - Ceramic automatic-closing flushing valve with delay function - Google Patents

Abstract

The utility model provides a ceramic automatic-closing flushing valve with delay function, which is characterized in that a valve body can not bear water pressure and the acting force produced by the water pressure. After closing the flushing valve, inlet water is confined to a metal pipe joint and an inlet tube; the valve body is not used as a pressure vessel, and only has the function of a water channel. And because only a pressure chamber is independently connected to the metal pipe joint, and has no connection with the valve body which does not need to finish machining, so the valve body can be made of a ceramic, and other low-intensity corrosion resisting cheap materials. The safety and reliability of the utility model are all higher than the safety and reliability of a ceramic water tank. The service life of the valve is extended by adopting a rubber gallbladder replaced an O-typed seal ring.

Description

Ceramic automatic-closing flushing valve with delay function

The utility model relates to a kind of improved sanitary flush device, the delay-self-closing flushing valve that is used to wash closet.

Existing self-closing valve has a variety of forms, but mainly is made up of parts such as valve body, counter-pressure chamber, piston type main valve or barrier films, also has to adopt metal bellows counter-pressure chamber structure.Various forms of self-closing valves all bear the pressure of water, so valve body material are had higher requirement in the valve body, in order to prevent corrosion and attractive in appearance, often adopt copper chrome-faced or stainless steel simultaneously, and its weak point is; Valve body cost height.Counter-pressure chamber is easy to generate abrasion owing to there is fricting movement in addition, influences application life.

The purpose of this utility model is under the prerequisite of improving self-closing valve valve body condition of work, for valve body provides manufactured materials widely, and for example ceramic or other nonmetal, corrosion resistant cheap material.A kind of improved counter-pressure chamber structure is provided simultaneously, prolongs the application life of self-closing valve.

Utility model is achieved in that the connection form that changes traditional self-closing valve counter-pressure chamber.Counter-pressure chamber is connected on the admitting pipe joint to utilize screw thread to incite somebody to action independently, and the counter-pressure chamber after the improvement independently is installed on the admitting pipe joint, and is contactless with valve body, and each spot size required precision of valve body is not high, and valve body can be without machine, direct sintering, cast form.Piston type main valve in the counter-pressure chamber with water seal in metallic pipe coupling and water inlet pipe.Valve body does not bear hydraulic pressure in the course of the work, does not use as pressure vessel.Valve body has only played water stream channel, and through above-mentioned improvement, valve body material has had choice widely.The sanitary ceramics that China generally uses belongs to half porcelain.Have suitable resistance to compression, bend resistance, impact strength.In building materials, be extensive use of, the ceramic wc flushing cistern in for example high and low position etc., the safety of ceramic self-closing valve, reliability all are higher than the ceramic wc flushing cistern of present use.No pressure in the ceramic valve body does not exist by high pressure explosion problem, even valve body is smashed even disengaging fully, counter-pressure chamber still is associated on the water inlet pipe, and water inlet is sealing normally.And in a single day ceramic wc flushing cistern breaks, and ball float is sagging, and water inlet is overflowed in a large number and can not be closed.The purposes of pottery self-closing valve and working environment and water tank are identical, only can be used to wash closet, are difficult for bumping with other object.Ceramic water tank is understood this point through use certificate for many years.Pottery self-closing valve volume is little, and good rigidly is also convenient, reliable than ceramic water tank in transportation, installation process.Pottery is corrosion-resistant, cost is low, and surperficial glazing can be supporting with the closet color and luster, than electroplating more coordination, attractive in appearance, has the excellent decoration effect.Be fit to various occasions such as high-level building and general dwelling house and use, can save a large amount of non-ferrous metals, reduce cost.

Fig. 1 is the sectional drawing of a kind of concrete structure of utility model

Fig. 2 is the counter-pressure chamber part sectioned view after improving.

Below with reference to Fig. 1 the utility model is described in further detail: what Fig. 1 adopted is traditional back-pressure cell structure, and purpose is to make the people be easy to observe primary structure feature of the present utility model.The counter-pressure chamber of two kinds of structures all is applicable to the utility model.One end of admitting pipe joint (1) connects with water inlet pipe, and the other end passes the through hole in the middle of valve body (2) upper surface, uses thread connection with counter-pressure chamber (3), and is simultaneously that valve body (2) is fastening.Rubbery flat gasket circle (4) prevents metal extruding pottery and seals.Auxiliary valve (5), back-moving spring (6), zero RunddichtringO (7) are housed in the counter-pressure chamber (3), and there are resistance mud aperture (9) and sealing mat (10) in piston type main valve (8) top.The operating principle that counter-pressure chamber opens and closes is prior art, has just told about no longer in detail here.Annular effluent trough (11) is along counter-pressure chamber top radial equipartition, and the sectional area of effluent trough (11) is not less than the water inlet pipe sectional area, should leave suitable width on the counter-pressure chamber (3) and not process fluting, guarantees that the counter-pressure chamber housing has enough intensity.Current along the counter-pressure chamber outer wall and valve interior wall between the annular gap discharge, also will there be enough areas the annular gap, to reduce resistance to water-flow, dependable flow.Bottom flange (12) passes from valve body top, uses thread connection with drain connection (13).Flange with valve body lower portion clamps simultaneously, and rubbery flat gasket circle (14) prevents infiltration and extruding pottery.Valve body also can adopt other multiple mature technology with connecting of valve gap, and for example porcelain vase connects with the bull short thread that vial generally adopts, and stressed little because of valve body, other method of attachment also can be satisfied the demand.Vacuum brake (15) is fitted on the valve body lower end face, and the aperture on the drain connection leads to atmosphere.Push-button socket (16) can with the valve body separate machined.Zero RunddichtringO (7) on the piston type main valve (8), because fricting movement, application life is short, can adopt rubber courage (17) shown in Figure 2 to replace zero RunddichtringO (7).The rubber courage is a totally enclosed, its end and auxiliary valve sealing, and profile and counter-pressure chamber inner chamber are approaching.Counter-pressure chamber inwall and piston cover (19) loose fit.Piston cover (19) the effect here is protection rubber courage inexcessive swollen rising behind pressurized.During pressurized, what rubber courage (17) was smooth is close in counter-pressure chamber and the piston cover.Because the outer rigid housing protection is arranged completely, and the rubber courage can bear very high pressure, can not produce stretchings, swollenly rise, down to explosion, every square centimeter of this form can withstand voltage 100-200 kilogram, is mainly used in the rubber high-pressure oil pipe at present.Rubber has the better elastic distortion, can guarantee the Telescopic of counter-pressure chamber, and the working cycles number of times of rubber courage surpasses metal bellows.Its operating principle is identical with traditional piston type counter-pressure chamber.

The utility model is not suitable for and serves many purposes the occasion that is easy to bump.

Claims (3)

1, a kind of delay-self-closing flushing valve, this flushing valve have a push-button socket (16), auxiliary valve (5), back-moving spring (6), vacuum brake (15), it is characterized in that: valve body (2) adopts ceramic post sintering to be shaped.

2, according to the described flushing valve of claim 1, it is characterized in that: counter-pressure chamber (3) and admitting pipe joint (1) are with thread connection together.

3, according to the described flushing valve of claim 1, it is characterized in that: a rubber courage (17) of bringing the sealing of water aperture (18) into is housed in the counter-pressure chamber (3).

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