CN2195670Y - Double-dished diaphragm key valve - Google Patents

Abstract

The utility model discloses a valve, which is used for water draining and closing and is provided with a T-shaped valve body and two through holes which are respectively communicated with water inlet and outlet holes which are arranged at the bottom of a blind hole on the valve body; the lower part of a valve spindle is sleeved in a sealing sleeve; in addition, a square blind hole dashes out of the end head of the valve spindle which is matched with a key handle which is provided with a square-shaped lower end head. The utility model has the advantages of simple structure, material saving, sealing fastness and reliability, no water leakage, no water emit, no water drop, and long service life. The utility model is provided with the key handle to prevent littering around water to achieve the purpose of saving.

Description

Double-dished diaphragm key valve

The utility model relates to a kind of plumbing, and it is for being contained on the tap water pipe line as discharging water and a kind of valve of Guan Shuiyong.

At present, on the tap water pipe line both domestic and external, be used for discharging water and close the valve of water, normally stop valve and ball valve are two kinds: after stop valve used a period of time, the filler between valve rod and the valve gap can be damaged, and the slit occurs, and water can be emerged from this slit and be caused waste.In the valve body of stop valve, has only a port hole.When closing, it can only close water outlet, can not block inlet channel, so hydraulic pressure is when high, and often high hydraulic pressure can penetrate from the slit between seal ring and valve body, and flowed out from water outlet unblockedly, produced water clock, caused waste; The difficulty of processing of ball valve is big, and cost is higher, and the controlled water flow amount is not too convenient; And the valve rod of existing stop valve and the spool of ball valve all be immersed in the water all the time, and long easy corrosion of time one can be shortened their working life.The switch handle of existing in addition stop valve and ball valve is that anyone can at will open, and often the stranger at will leaves about water, causes unnecessary waste and loss.

The purpose of this utility model is to avoid above-mentioned deficiency of the prior art, and provide a kind of volume little, simple in structure, cost is low, good sealing effect, do not metal run out, do not emit water, water clock not, and can come the diplopore barrier film key valve of opening and closing with key handle.

The purpose of this utility model is to reach by following measure: this valve is to be made of valve body, valve gap, protective cap, handle, valve rod, stuffing box gland." ┴ " shape of outer being of valve body has two through holes on the blind hole bottom of valve body upper end, the water inlet with the valve body left end communicates, and another osculum with the valve body right-hand member communicates.The shape of valve rod is top one section and is threaded that its upper-end surface upper punch is pressed with square blind hole, and the lower end has the step-like cylindrical body of small boss.A discoid valve is being followed in the lower end of valve rod.Be inserted in the undulatory stuffing box gland together with valve the below of valve rod.Stuffing box gland is the blind hole that is positioned at the valve body upper end.Screw thread on the valve rod and the middle screw thread interlock mutually of valve gap.And valve gap is after pushing down the upper-end surface of stuffing box gland, is fixed on the upper-end surface of valve body again.Mix the lower end key handle of head that is square in addition again, and protective cap worn on the key bar that is fastened on key hand tenon.

Its upper end of protective cap of the present utility model can be the top cover of enclosed shape, and it is the upper end that directly is placed in valve gap.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural drawing of the indoor key-type of the utility model.

Fig. 2 is the Key structure figure of Fig. 1.

Fig. 3 is the structural drawing of the outdoor key-type of the utility model.

Fig. 4 is the Key structure figure of Fig. 3.

The utility model is described in further detail below in conjunction with embodiment: the outward appearance of valve body (1) is cast as " ┴ " shape, on the blind hole bottom of valve body (1) upper end, two through holes are arranged, one of them communicates with the water inlet of valve body (1) left end, and another osculum with valve body (1) right-hand member communicates, valve rod (3) can be made top one section and be threaded, its upper-end surface upper punch is pressed with square blind hole, and the step-like cylindrical body of lower end band small boss.At valve rod (a 3) lower end riveted joint discoid valve (4).Be inserted in the undulatory stuffing box gland (5) together together with valve (4) below of valve rod (3).Stuffing box gland (5) is the blind hole that is positioned at valve body (1) upper end.Allow screw thread on the valve rod (3) and the screw interlock mutually in the middle of the valve gap (2).Valve gap (2) is after pushing down the upper end of stuffing box gland (5), to be fixed on the upper-end surface of valve body (1) again.Mix its lower end key handle (7) of head that is square in addition again, and protective cap (6) worn on the key bar that is fastened on key handle (7).Here it is indoor key-type diplopore barrier film valve of the present utility model.Another kind of outdoor key-type diplopore barrier film valve is on preceding a kind of basis; just the upper end of protective cap (6) is made the top cover of enclosed shape; and it is directly installed on the upper end of valve gap (2) with screw thread, rather than it is worn on the key bar that is fastened on key handle (7).Because it is outdoor that this valve is installed in, the protective cap (6) of this top cover sealing can make the square blind hole of valve rod (3) upper end can not lived by more airborne fouls and foreign material filling, guarantees that it is easy to use.

When opening this valve, only need the square spigot of key handle lower end is inserted in the square blind hole of valve rod upper end, counter-clockwise then rotatable handle, then valve rod just the internal thread in the valve gap rise, be enclosed within stuffing box gland on the valve rod also along with rising, stuffing box gland just is separated with the blind hole bottom of valve body upper end like this, two through holes on the blind hole bottom are opened simultaneously, so from the beginning just from the water inlet, through behind that bottom through-hole that communicates with it, enter in the blind hole of valve body upper end, and then enter into the osculum of valve body through another through hole of bottom, water is just emitted.As long as with hand clockwise direction handle with sleeve, valve rod will drive stuffing box gland and move downward, be adjacent to up to the blind hole bottom of stuffing box gland the valve body upper end, so those two through holes on the blind hole bottom are shut again simultaneously, accomplish watertight.With pulling out in the square blind hole of key handle from the valve gap, so just can prevent effectively that the stranger from leaving about water at last.And valve rod can not contact with water in entire work process all the time, can guarantee that valve rod is lost by scale never.

The utility model has following advantage compared to existing technology: this valve mechanism is simple, volume is little, cost is low. Seal solid and reliable, do not metal run out, do not emit water, do not drip. Its valve rod does not contact with water all the time, can prolong the service life of this valve. Be with the key handgrip, can also prevent that others from will leaving about water, reaches the purpose of saving.

Claims (2)

1, a kind of diplopore barrier film key valve that constitutes by valve body (1), valve gap (2), protective cap (6), valve rod (3), stuffing box gland (5), it is characterized in that: on the blind hole bottom of valve body (1) upper end, two through holes are arranged, water inlet with valve body (1) left end communicates, and another water outlet with valve body (1) right-hand member communicates; The shape of valve rod (3) is top one section and is threaded that its upper-end surface upper punch is pressed with square blind hole, and the lower end has the step-like cylindrical body of small boss, and the lower end of valve rod (3) is connecting a discoid valve (4); Together be inserted in the undulatory stuffing box gland (5) together with valve (4) below of valve rod (3), and stuffing box gland (5) is the blind hole that is positioned at valve body (1) upper end; Screw thread on the valve rod (3) and the middle screw interlock mutually of valve gap (2), and valve gap (2) is after pushing down the upper-end surface of stuffing box gland (5), is fixed on the upper-end surface of valve body (1) again; Mix the lower end key handle (7) of head that is square in addition again, and protective cap (6) worn on the key bar that is fastened on key handle (7).

2, diplopore barrier film key valve according to claim 1, the upper end that it is characterized in that protective cap (6) can be the top cover of enclosed shape, it is the upper end that directly is placed in valve gap (2).