CN2089097U - Delay self-closed water tap - Google Patents

Abstract

The utility model relates to a delay self-closed water tap, which comprises a housing, a cylinder body, a press cap, and a valve core assembly. The valve core assembly comprises a press cover, a valve rod, a top ring, a stop ring, a piston, a union screw, a valve core, and a clogging preventing needle, wherein, the press cover is installed in the cylinder body; the valve rod, the top ring, the stop ring, the piston, the union screw, and the valve core are connected as a whole; the clogging preventing needle is positioned in the damping hole of the piston. When the water tap is thumbed by people with hands, the water tap is automatically closed after water discharging time is delayed for some time. Therefore, the utility model which can prevent permanent water flow, can prevent the phenomenon that the water tap is forgotten to be closed when water supply is cut off by daylight, and tap water overflows at night, and can prevent cross infection after the hands are washed is ideal water saving ware sanitary ware for a public place, and dining rooms and toilets in an organ, a factory, a hospital, and a school.

Description

Delay self-closed water tap

The utility model relates to a kind of water tap, particularly a kind of delay-self-closing water tap.

The water tap of citizen and unit use is at present normally twisted the purpose that reaches out and close by hand.Use this ordinary faucet, when people forget that closing water tap or water tap closes the waste that will cause water when tight.In addition, it needs people to remove to close water tap with hand, and the hand of wash clean removes to close water tap again, just might cause cross pollution.

The purpose of this utility model provides a kind of delay-self-closing water tap, uses this water tap, can open water tap with hand, and time-delay discharges water and closes water tap automatically behind one section scheduled time.

The purpose of this utility model realizes that in the following manner a kind of delay-self-closing water tap comprises a housing, a cylinder body, a pressure cap and a Spool assembly.Described Spool assembly comprises the gland of a screw fixed on inner chamber of cylinder block top, one is slidingly mounted on the valve rod in the gland center cavity, one is slidingly mounted on the collar on valve rod top by its center hole, one is embedded in the back-up ring that valve stem tip prevents that collar from upwards sliding, one around valve rod, spring between collar and gland, one is connected the valve rod lower end by connecting screw, piston with a damping hole, one lower end is that circle, all the other one-tenth are prismatoidal, its upper end snail is rotated with the spool that fixes on the piston lower end, and an O type circle that is embedded in the circular groove of spool lower end.

Further improvement of the utility model is that an anti-blocking pin that can inside slide and don't can come off is installed in the damping hole of piston.

The utility model has the advantages that, a kind of water tap of delay-self-closing is provided, when people open water tap with hand, time-delay discharged water after a period of time, and water tap can be closed automatically.Thereby can prevent perennial draingage, prevent from daytime to cut off the water forget to close, the excessive phenomenon of water in evening.And owing to need not to close water tap the cross infection after therefore can preventing to wash one's hands with hand.So it is a kind of desirable water saving and sanitary ware.

Below in conjunction with accompanying drawing, an embodiment of the present utility model is done detailed explanation:

Fig. 1 is the utility model one embodiment's a elevational cross-sectional view.

Referring to Fig. 1, cylinder body 2 is by being threaded in the upper end of housing 1, junction plane place embedding one O type circle 17.Embedding one O type circle 19 in the cylinder body 2 lower end circular grooves is so that cylinder body 2 lower end peripheries cooperate with the bore seal of housing 1.The lower side of cylinder body 2 also has two through holes 12.Gland 6 is installed with O type circle 13 by being threaded in cylinder body 2 inner chamber tops on the junction plane between them.There is individual through hole at gland 6 centers, and valve rod 11 is installed slidably, and valve rod 11 tops are installed with collar 7 slidably.The upper end of valve rod 11 is positioned at the top of collar 7 and embedding one back-up ring 8 upwards slides to prevent collar 7.Around valve rod 11, between collar 7 and gland 6, also has spring 10.Piston 3 is connected the lower end of valve rod 11 by connecting screw 14.O type circle 15 is installed, so that the circumferential lateral surface of piston 3 contacts with the internal chamber wall sealing of cylinder body 2 in the circular groove of piston 3 peripheries.O type circle 4 is installed in the circular groove on connecting screw 14 tops,, the top outer side surface of connecting screw 14 is contacted with the internal chamber wall sealing of piston 3 so that when upwards lifting piston 3 by connecting screw 14.One damping hole is arranged on the piston 3, anti-blocking pin 16 is installed in the damping hole, the mid diameter of anti-blocking pin 16 is less than the diameter of damping hole, thereby anti-blocking pin 16 is slided up and down in damping hole; And anti-blocking pin two ends are crushed, and make the diameter of its transverse dimension greater than damping hole, and anti-blocking pin 16 is unlikely to skid off from damping hole thereby make.Spool 18 is by being threaded in the lower end of piston 3, and spool 18 is into prismatic basically, and just the lower end of spool 18 is circular, and this circular outer diameter cooperates with the diameter of cylinder body 2 lower end inner chambers, so that spool 18 can be in 2 li slips of cylinder body.In spool 18 lower end circular grooves, O type circle 20 is installed.The external diameter of this O type circle 20 is slightly larger than the diameter of cylinder body 2 lower end inner chambers, and spool 18 lower ends are circular to be contacted with cylinder body 2 bore seal thereby both made when spool 18 is upwards lifted, and played position-limiting action again.In addition, pressure cap 5 is fixed on the collar 7 by screw 9, and the upper periphery of the lower lumen of pressure cap 5 and cylinder body 2 is slidingly matched.

Working principle of the present utility model is, as people during with the downward pressing of hand pressure cap 5, press valve rod 11 downwards, and it is downward to drive collar 7, makes spring 10 pressurizeds.This moment, piston 3 also moved down, and drive spool 18 moves down.When the prismatic of spool 18 part protruded in the lower end of cylinder body 2 downwards, water entered the inner chamber of cylinder body 2, and flowed to the outlet of water tap by through hole 12, and this moment, people can water.Meanwhile, water passes through damping hole, and in cylinder body 2 chambeies between the gap of connecting screw 14 tops and piston 3 central hole inflow gland 6 and the piston 3.When staff left pressure cap 5, the rebounding force of spring 10 upwards lifted valve rod 11 by collar 7 and back-up ring 8.The upper end of valve rod 11 is restored pressure cap 5, the lower end of valve rod 11 at first lifts connecting screw 14, O type circle 4 in the connecting screw 14 nose-circle connected in stars is contacted with the internal chamber wall sealing of piston 3, like this, the inner chamber of the cylinder body 2 between gland 6 and the piston 3 forms the Seal cage that has only a damping hole outlet, thereby make by connecting screw 14 and upwards lift piston 3, also promptly lift spool 18 and be subjected to the reaction force of the water in cylinder body 2 inner chambers, make the lower end of spool 18 can not upwards get back to original and cylinder body 2 lower ends sealing position contacting quickly, thereby make water continue to flow out water tap.The power (from the rebounding force of spring 10) that water in cylinder body 2 inner chambers is upwards pushed by piston 3 is slowly discharged downwards by the damping hole on the piston 3, the size of damping hole, determined the speed that water is discharged, damping hole is more little, water in cylinder body 2 inner chambers is discharged slowly more, the speed that piston 3 is moved up is slow more, even also the sealing of spool 18 lower ends and cylinder body 2 lower ends comes slowly more, thereby makes the delay time of water tap long more.Otherwise the aperture of damping hole is big more, and then delay time is short more.When the O type circle 20 in the spool 18 lower end circular grooves engages with the lower end bore seal of cylinder body 2, all reinstatements, water also stops to flow.As for an anti-blocking pin 16 is installed, then can prevent scaling in the damping hole, in damping hole because, anti-blocking pin 16 is always slided up and down, thereby remove incrustation scale along with water flows to outflow in damping hole in the damping hole of piston 3.Certainly, between anti-blocking pin 16 and the damping hole certain clearance should be arranged, and the size in this gap is decided by the needs of water tap time-delay.Common this water tap delay time can be selected between several seconds to a few minutes.

Claims (4)

1, a kind of delay-self-closing water tap, comprise housing, cylinder body, a pressure cap and a Spool assembly, it is characterized in that, described Spool assembly comprises the gland of a screw fixed on inner chamber of cylinder block top, one is slidingly mounted on the valve rod in the gland center cavity, one is slidingly mounted on the collar on valve rod top by its center hole, one embedding is around valve rod, spring between collar and gland, one is connected the valve rod lower end by connecting screw, piston with a damping hole, one lower end is circular, all the other one-tenth are prismatoidal, its upper end spiral is connected the spool of piston lower end, and an O type circle that is embedded in the circular groove of spool lower end.

2, delay-self-closing water tap according to claim 1 is characterized in that, a mid diameter is arranged less than damping hole, the two ends section anti-blocking pin greater than damping hole in the damping hole of piston.

3, delay-self-closing water tap according to claim 1 is characterized in that, embedding one O type circle in the peripheral groove of piston.

4, delay-self-closing water tap according to claim 1 is characterized in that, embedding one O type circle in the groove of connecting screw top.

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