CN87210773U - Time-delayed self-closing flushing valve - Google Patents

Abstract

The utility model relates to time-delay self-closing flushing valve used for flushing a urinal in a toilet. The time-delay self-closing flushing valve is provided with a damping mechanism sealed with a water supply cavity and is provided with a non-hinge type operating handle. The time-delay self-closing flushing valve is particularly suitable for various flushing toilets as a washing device, and is also suitable for squatting toilets and sitting toilets. The utility model has the advantages of compact structure, small size, beautiful appearance, stable operation, no impact, very littile space occupation, water saving, high durability, and convenient installation and maintenance.

Description

Time-delayed self-closing flushing valve

The utility model relates to a kind of flushing valve that toilet stool washing equipment is done in the washroom that is used for.

In the washroom, particularly except that using wc flushing cistern, also use various flushing valves widely in the flush toilet of civilian construction at present.Wherein common have a spherical pressure handle formula and foot-operated, this class valve tension spring easy-to-rust and leaking, and closing often has impact shock to take place too soon.The flushing valve of some delay-self-closings is also arranged, but mostly adopt differential piston and, therefore damping hole is often arranged by the defect of dirt obstruction in the water by the damping hole time-delay.

For addressing the above problem, United States Patent (USP) 3211416 has designed a kind of independent damping mechanism that seals fully with the water supply chamber, but still certain shortcoming arranged, packing element such as sealing usefulness will be crushed on distortion difficulty on the spring when hydraulic pressure is higher, serious wear, cumbersome such as upper valve body 8 and following valve body 5 usefulness flange connections again, volume increases and is not attractive in appearance.

The purpose of this utility model provides a kind of improved, delay-self-closing flushing valve with independent damping mechanism, and it makes the structure of valve compact more, volume-diminished, good looking appearance.

The utility model is achieved in that this valve has a complete valve body, has a water inlet to be connected with the water source on the valve body, also has one to communicate with closet with the vertical delivery port of water inlet.A removable fairlead is arranged at the top of water inlet in the valve body, and this fairlead is as the director element of valve rod, and a valve rod can move up and down in its centre bore, by sealing ring valve body is divided into two chambeies up and down simultaneously, epicoele is a damping cavity, and cavity of resorption is the water flowing chamber, and two chambeies seal mutually.There is a flap lower end of valve rod by the effect of hydraulic pressure and the valve base sealing on the valve body.A damping piston is housed on the valve rod in damping cavity, and a valve gap is equipped with on the top of valve body, and the upper end of valve rod is by stretching out in the valve gap, and valve gap makes damping cavity keep sealing, is full of damping fluid in the damping cavity.There is an elastic collar card on the top of valve rod thereon, a packing ring is housed under the elastic collar, a fork-shaped handle fork is between the boss that is stuck on the valve rod on packing ring and the valve gap, and be that fulcrum forms a lever with the edge of boss, a guard shield is stuck on the boss of valve gap, and the sidewall of guard shield has a groove, handle is stretched out by this groove, the upper and lower displacement of the height restriction handle of groove, the width of groove is narrower than the part of handle in cover, limits moving horizontally of handle.

The utility model is because adopted the isolated component of removable fairlead as damping cavity and water flowing chamber, so compact conformation, and valve body reduces, again because adopted the handle of hinge-less formula and structure that guard shield fixedly makes whole valve compact more attractive in appearance.

The concrete structure of utility model is provided by following examples and accompanying drawing:

Fig. 1 is the sectional drawing of the delay-self-closing flushing valve that the utility model proposes.

Describe details and operating principle in detail below in conjunction with Fig. 1 according to the concrete structure that the utility model proposes.

This valve has a valve body 4 cylindraceous, and the right-hand member of valve body has a water inlet to be connected with the water source, and the lower end of valve body has a delivery port to link to each other with closet.In valve inleting water mouth top an annular boss 29 is arranged, fairlead 12 usefulness elastic collars 14 are fixed on the boss 29 of valve body.Have a valve rod 10 to move up and down therein in the centre bore of fairlead 12, fairlead 12 is divided into the water flowing chamber of bottom and the damping cavity on top to valve body by O-ring seals 13 and 11.Flap 9, sealing mat 8, pad 7 one are reinstated the lower end that nut 6 is fixed on valve rod, and by 5 sealings of the valve seat on hydraulic pressure and the valve body 4.Be fixed with piston 17 with elastic collar 19 on the valve rod 10 in damping cavity, the endoporus of piston is equipped with O shape circle 18 and valve stem seal, and lining 16 sealings of inlaying in one-way sealing circle 15 and the valve body are housed on the cylindrical of piston, has damping hole 30 on the piston.Valve gap 20 is arranged at the top of valve body, passes in the centre bore of valve rod 10 by valve gap, and valve gap makes the damping cavity sealing by sealing mat 26 and O shape circle 21.Elastic collar 23 and packing ring 22 are equipped with in the top of valve rod 10, and the fork portion fork of handle 25 usefulness left ends is between the boss that is stuck on the valve rod on packing ring 22 and the valve gap 20.Guard shield 24 is stuck in the outer groove on valve gap 20 boss by the chimb of its lower end inner surface, the guard shield sidewall has a groove, and promptly from stretching out here, the height of this groove can limit moving up and down of handle to handle 25, the width of this groove is narrower than the part of handle in cover, limits moving horizontally of handle.In the water inlet of valve body 4, be equipped with and mend core 27, movable joint nut 28 is housed in the bushing 27 so that be connected with water supply line.Cushion rubber 3, pressure ring 2 and locknut 1 are equipped with in the delivery port place of valve body 4, after outlet pipe stretches in the endoporus of cushion rubber 3, screw locknut 1 and are compressible cushion rubber 3 and form fast sealing with outlet pipe and be connected.

When this valve work, press handle 25 downwards, handle is just upwards mentioned for propping up the valve rod 10 of naming a person for a particular job with the edge of valve gap boss, and flap 9 and sealing mat 8 are risen from valve seat 5, and water flows to outlet from import.Damping piston 17 in the damping cavity also moves up with valve rod simultaneously, and the damping fluid on piston top flows to the bottom by one-way sealing circle 15.After decontroling handle 25, flap 9 will have the trend of closing downwards under the effect of hydraulic pressure, but the liquid in the damping cavity below the damping piston is by unidirectional sealing ring 15 sealings, can only slowly flow back to piston top by damping hole 30, play the effect of time-delay closing, change the viscosity of damping fluid in the damping cavity and the length that the damping hole diameter can change time-delay.

Claims (4)

1, the delay-self-closing flushing valve used of a kind of washroom toilet stool washing, it comprises a valve body, there is a water inlet to be connected on the valve body with the water source, also have a delivery port to link to each other with closet, a water flowing chamber and a damping cavity are arranged in the valve body, a valve gap is arranged at the top of valve body, a valve rod passes the damping cavity lower end and extend in the water flowing chamber, a flap is fixed on the lower end of valve rod by power and the valve base sealing of hydraulic pressure differential pressure action on flap, the upper end of valve rod passes valve gap and links to each other with control crank, and a damping piston is housed on the valve rod in damping cavity.Be full of damping fluid in the damping cavity, it is characterized in that having in the valve body a removable fairlead, not only do the director element of valve rod, also do the separating element in damping cavity and water flowing chamber simultaneously, a hinge-less handle can make valve rod move up and down and be fixed on the valve gap by guard shield.

2, delay-self-closing flushing valve according to claim 1 is characterized in that said fairlead is to be fixed on the step in the valve body with elastic collar with the hole, and makes damping cavity and water flowing chamber sealed to each other by sealing ring.

3, delay-self-closing flushing valve according to claim 1 is characterized in that said handle is a fork-shaped handle, its fork between pad that the elastic collar of valve stem tip blocks and the boss on the valve gap and with the edge of boss for lighting leverage.

4, delay-self-closing flushing valve according to claim 1, it is characterized in that said guard shield is to be stuck in the outer groove of valve gap convex platform by the chimb on its lower end inner headed face, have groove on its side, handle can stretch out from this groove, the height restriction handle of this groove is in the upper and lower displacement at fulcrum place, the width of this groove is narrower than the part of handle in cover, and the restriction handle is extracted in covering.