CN2144222Y

CN2144222Y - Anti-drip tap

Info

Publication number: CN2144222Y
Application number: CN 93200089
Authority: CN
Inventors: 赵之璋
Original assignee: SCHOOL FOR STAFF AND WORKS BEIJING RUNNING WATER CO
Current assignee: SCHOOL FOR STAFF AND WORKS BEIJING RUNNING WATER CO
Priority date: 1993-01-05
Filing date: 1993-01-05
Publication date: 1993-10-20
Anticipated expiration: 2003-01-05

Abstract

The utility model relates to a drip proof tap. It is characterized in that a right conical throttle orifice is arranged in the valve body, the valve core is positioned at the lower part of the throttle orifice, and a push rod is arranged in an inner hole at the upper part of the valve body.

The drip-proof faucet enables the valve core to be tightly attached to the right conical throttling opening by means of spring tension and water pressure; the water is prevented from overflowing and leaking from the upper part of the valve body by the sealing ring.

The anti-dripping faucet can effectively prevent the faucet from dripping, can protect the cleanness of water quality and prolong the service life of the faucet.

Description

Tap for preventing dripping and leaking water

The present invention relates to a kind of preventing water drip tap.

At present, on known water tap, utilize screw thread to screw power spool is tightly covered on the tubular restriction, in order to passing through by water; Adopt the gland packing sealing means, in order to the upper end overflow of anti-sealing along threaded stem from tap valve body.Therefore, present known water tap requires water tap is tightened when closing.Otherwise water tap will produce water clock, and when the hydraulic pressure in the pipe network became big, weeping can be more serious.When firmly tightening water tap, the spool of water tap very easily suffers damage, and the spool that suffers damage will cause more serious in the future water clock or metal run out.For the upper end overflow along threaded stem from tap valve body of anti-sealing, present known water tap requires to screw Gland, screws deficiency and certainly will produce water clock.But it is painstaking that undue screwing will cause handle to rotate.Even adjusted the degree of screwing, because the frequent rotation of handle, the gap between stuffing box packing and the threaded stem also can be increasing.How long have more than is needed, weeping also will produce, and also will screw adjustment.In addition, the set sealing station of present known water tap water tap screw screw pair above, screw pair will directly contact with the water by water tap all the time.The corrosion and the infringement of screw pair had both been caused easily, the cleaning of having polluted water again.

The purpose of this invention is to provide a kind of preventing water drip tap, it not only can prevent effectively that water tap from producing water clock, and can protect the cleaning of water and the working life of prolongation water tap.

The object of the present invention is achieved like this: it is made up of valve body, spool, spring, plug screw, push rod, handwheel, seal ring, in valve body, establish positive conical restriction, on the cylindrical of valve body top, be shaped on screw thread and handwheel composition and screw screw pair, be shaped on interior threaded hole and plug screw realization scyewed joint in the valve body bottom.Below the positive conical restriction of valve body, spool is housed, the spool top is that positive taper contacts with positive conical restriction cooperation, and the spool bottom is the thin bar of cylinder, the thin bar first half of cylinder outer casing spring, Lower Half extend in the guiding blind hole on the plug screw, and plug screw is tightened on the valve body bottom.Spool relies on the enough tension force and the water pressure in the pipe network of spring to be adjacent to positive conical restriction from the below, in order to passing through and prevent to produce water clock by water.In the endoporus on valve body top push rod is housed, is embedded with seal ring on the push rod, seal ring is close to pushrod movement the time on the valve body inner bore wall above the faucet outlet all the time, in order to stop water along push rod from tap valve body the upper end spill and leakage.The lower end of push rod contacts with the spool top, and the upper end of push rod is shaped on pillow block, realizes moving the connection by screw and handwheel.On the handwheel dish of handwheel, be provided with center hole, be enclosed within on the pillow block of push rod upper end, be provided with the tubular skirt section below the handwheel dish, the outside thread composition that the inboard, skirt section is shaped on internal thread and the valve body top cylindrical screws screw pair, in order to reach the switch water tap and to regulate the effect of water consumption.

Owing to adopt such scheme, the spool of water tap not only can enlarge sealing surface but also can avoid when closing water tap infringement because of exertin caused.Therefore, can prevent effectively that water tap from producing water clock, when particularly hydraulic pressure was big more in pipe network, its seal action power was big more, the difficult more generation of water clock.Owing to adopt such scheme, make that the sealing reliability of valve body upper end is guaranteed by machining accuracy, can guarantee that the leakproofness that seals can guarantee the light rotation of handwheel again, can avoid often to adjust the requirement that gland screws degree and can keep permanent sealing effect again.In addition, adopt such scheme can also prevent that the screw pair that screws of water tap from directly contacting with water by water tap, not only reduced the corrosion that screws screw pair but also protected the cleaning of water.

The present invention is further described below in conjunction with drawings and Examples.

Accompanying drawing is the present invention and embodiment's a structure sectional view.

Among the figure: 1, spring 2, plain cushion 3, button-headed screw

4, plain cushion 5, push rod 6, seal ring 7, handwheel

8, valve body 9, spool 10, plug screw

In the accompanying drawings, when rotating handwheel (7), handwheel (7) relies on screw thread to drive push rod (5) and moves downward, and backs down spool (9), dead spring (1), and water passes through from the annular space that produces, and water tap is opened; When backward rotation handwheel (7), handwheel (7) relies on screw thread to drive push rod (5) and moves upward, and is close on the conical restriction under the promotion of spool (9) water in spring (1) and pipe network, ends passing through and preventing water clock of water, and water tap is closed.At push rod (5) when moving up and down, embedding thereon seal ring (6) movement therewith and closely contact with the last hole inwall of valve body (8) and to realize sealing, anti-sealing is (8) upper end spill and leakage along push rod from valve body.The big I of the flow of water tap is arbitrarily determined by the position that handwheel (7) rotates.The rest and the guiding of spool (9) and spring (1) are guaranteed by plug screw (10).

In the embodiment shown in the figures, valve body is established positive conical restriction in (8), the internal thread composition that is shaped on outside thread and handwheel (7) skirt section at valve body (8) top cylindrical screws screw pair, is shaped on threaded interior hole in valve body (8) bottom and realizes being threaded with plug screw.

In the embodiment shown in the figures, spool (9) top is that positive taper contacts with positive conical restriction cooperation, and spool (9) afterbody is the thin bar of cylinder, and the thin bar first half of cylinder outer casing spring (1) Lower Half extend in the guiding blind hole of plug screw (10).

In shown in the drawings embodiment, the handwheel dish of handwheel (7) is provided with center hole, be enclosed within on the pillow block of push rod (5) upper end, be provided with the tubular skirt section below the handwheel dish, the inboard, skirt section is shaped on internal thread and screws screw pair with the outside thread composition that valve body (8) top cylindrical is shaped on.

In the 4th embodiment shown in the drawings, center, plug screw (10) upper end is shaped on the guiding blind hole, has outer spiral shell to put with valve body (8) bottom and screws.

In the 5th embodiment shown in the drawings, push rod (5) is divided into thickness two-part, the first half of push rod (5) is that thick diameter cooperates with the diameter of bore on valve body (8) top, the first half of push rod (5) is shaped on seal groove, its top is shaped on pillow block, realize moving the connection by screw (3) and handwheel (7), the push rod Lower Half is thin diameter, and its top contacts with the top of spool (9).

Claims

1, a kind of preventing water drip tap, it is made up of spool, valve body, handwheel, push rod, plug screw, it is characterized in that:

A, establish positive conical restriction in valve body, the internal thread that is shaped on outside thread and handwheel skirt section at valve body top cylindrical is formed and is screwed screw pair, is shaped on interior threaded hole in the valve body bottom and is threaded with the plug screw realization;

B, below the positive conical restriction of valve body, the spool that the top is positive taper is housed;

C, in the endoporus on valve body top, push rod is housed.

2, preventing water drip tap according to claim 1 is characterized in that: the spool top is positive taper, and afterbody is the thin bar of cylinder, the thin bar outer casing spring of cylinder, and the lower end extend in the guiding blind hole of plug screw.

3, preventing water drip tap according to claim 1 is characterized in that: a tubular skirt section is established in the handwheel dish below of handwheel, and the inboard, skirt section is shaped on internal thread.

4, must ask 2 described preventing water drip taps according to claim 1 and power, it is characterized in that: center, plug screw upper end has the guiding blind hole, has outside thread and valve body bottom to screw.

5, preventing water drip tap according to claim 1, it is characterized in that: push rod is divided into thickness two-part, and the first half of push rod is that thick diameter cooperates with the diameter of bore on valve body top, and the first half of push rod is shaped on seal groove, the push rod Lower Half is thin diameter, and its top contacts with the top of spool.