CN201126033Y - Position dropping piston valve - Google Patents

Abstract

The position-dropping piston valve is an anti-freezing design with regard to a tap water supply terminal device. The position-dropping piston valve is composed by a hand wheel, a valve rod, a valve cover, an auxiliary member, a straight pipe, water admitting and draining pipes, a valve body, a piston and a water leaking hole; on account of a straight pipe provided between the water draining pipe (the highest water level) and the valve body piston which controls the water stream and is at the same water level of subterranean water pipes (the lowest water level), when finishing the water usage to close the hand wheel, the stored water in the straight pipe can naturally drop to the lowest water level by means of the slide of the piston, which is to say, the remaining water above the lowest water level in the tap water supply terminal device has been completely drained at the time of non-use, thus realizing the objectives of anti-freezing and facilitating the usage.

Description

A piston valve falls

Affiliated field:

The antifreeze design about tap water supply terminal unit valve a piston valve falls is.

Background technique:

Tap water is closely bound up with daily life, the use of tap water brings great convenience, but no matter pass by still now, blemish in an otherwise perfect thing be to have the middle high latitudes region that threatens of enduring cold often to exist the phenomenon of enduring cold and cutting off the water supply, and water supply installation is also therefore and fragile, though people also take certain defence measure, for example twine, prick, be coated with, method such as bag, but this is halfway very passive method, can not solve root problem, is difficult to adapt to the needs of modern society.

Summary of the invention:

The utility model designs for addressing the above problem exactly.Utilize this device, can make things convenient for operation easily, thoroughly eliminate the hidden danger of enduring cold and cutting off the water supply, reach the desirable application target that makes things convenient for, make winter summer grade water equally unblocked.

The technical solution of the utility model is as follows, it comprises valve rod, boss on the valve rod, gland nut, turnover water pipe, straight tube, valve body and valve body discharge opening, discharge opening on piston and the piston, scupper on the valve body, seal ring, guide rail, guide groove, between the buried valve body of outlet pipe and lower end of upper end, be connected with straight-run of pipe, the valve rod injection that is connected with handwheel wherein, the valve rod lower end is processed with screw thread and boss, being connected with profile on the screw thread is columniform piston, but outer surface of piston is processed with the groove of indentation sealing circle and the guide rail of leading role, piston is inside a tubular, there is the end lower end, be processed with screw at the end, on its sidewall, be processed with discharge opening, friction tight with the piston periphery wall is valve body, and design has water intake and scupper on the valve body, has guide groove on the inwall.

The beneficial effects of the utility model are winters during water, use up the straight tube and the water in the outlet pipe of easily enduring cold at every turn and just can begin emptying after valve body, have eliminated the possibility of freezing to block water.

Description of drawings:

Fig. 1: whole sectional drawing (water supply state)

Fig. 2: part sectioned view (non-water supply state, valve body and piston)

Fig. 3: ab place horizontal sectional drawing

Fig. 4: at the valve body planimetric map of intake pipe direction

Fig. 5: the piston in the intake pipe direction partly cuts open figure

Fig. 6: valve rod 2

Fig. 7: straight tube 10

Fig. 8: lock nut 6 plan views

Fig. 9: lock nut 6 front views

Figure 10: valve gap 8

Figure 11: valve gap 8 plan views

Figure 12: gland nut 4

Figure 13: gland nut 4 plan views.Among each figure: the discharge opening 13 on nut 1, valve rod 2, handwheel 3, gland nut 4, filler 5, jam nut mother 6, convex shoulder 7, valve gap 8, outlet pipe 9, straight tube 10, valve body 11, piston 12, the valve body, the discharge opening 14 on the piston, the scupper 15 on the valve body, intake pipe 16, guide rail 17, guide groove 18, screw groove 19, boss 20, seal ring 21,22.At length set forth its working procedure below in conjunction with accompanying drawing.

Embodiment:

Valve rod 2 (as Fig. 6) can select for use smooth bar to make, the material that also can select for use other to be suitable for, when using metal charge, need do anti-corrosion processing, make regular screw threads at the one head, the screw thread bottom processes square toes F, being used for following handwheel to connect and be convenient to operates, the a distance of matching with valve gap in the square toes bottom is processed with convex shoulder 7, other end at valve rod also processes screw, length equals the distance at the bottom of valve is arrived in valve body drain opening lower edge, and the screw thread upside has a boss 20, and this boss can be with playing the effect that limits piston 12 upper and lower at the bottom of the valve together.Handwheel 3 nuts 1 and valve gap 8 (as Figure 10,11) gland nut 4 (as Figure 12,13) can be selected for use or make according to NBS, its center hole matches with the valve rod of certain diameter, process regular screw threads (Figure 10) on the valve gap internal chamber wall, filler 5 can be selected soft materials such as asbestos yarn for use.The bar that processes is inserted valve gap, its convex shoulder 7 is born at valve gap 8 intracavity bottoms, and screw on lock nut 6 (Fig. 8, Fig. 9) and be close to prevent valve rod motion in vertical direction, add filler, first-class gland nut, handwheel, nut (as Fig. 1 top), make handwheel drive valve rod like a cork in the horizontal direction and rotate together, the length of valve rod 2 is decided by the length of straight tube, valve body.

Straight tube 10 (Fig. 7) can be selected ordinary water coal pipe for use, top is processed with the internal thread that matches with valve gap, there is an outlet pipe 9 to communicate in screw thread bottom one side with straight tube, its Placement can be used methods such as screw thread, welding, the outlet pipe end is processed with pipe thread, can follow connections such as ordinary faucet, bend pipe, the straight tube height can be according to the depth of frozen soil layer or local running water pipe at the underground degree of depth and actual demand and decide, generally about about 1-1.5 rice.The straight tube bottom is processed with can follow valve body 11 joining outside threads.

Valve body 11 is (as Fig. 1,4) can select the processing of metal ceramic or tubing for use, it is the cylindrical tubular thing at a band end, its upper inner is processed with can follow straight tube 10 joining internal threads (as Fig. 4), the screw thread downside is provided with an intake pipe 16 near the screw thread place and leads to straight tube 10, and on intake pipe 16, be processed with pipe thread and be used for connecting with foggara, can cast once-through at the bottom of intake pipe and the valve, welding, modes such as screw thread fuse with valve body, need do anti-corrosion processing during with metallic material or adopt special warfare to add an anticorrosion layer at inwall, and do fine finishing, generally be about the degree of finish of 10-11 level.The 2-2.5 that its diameter preferably is not less than intake pipe doubly highly is not less than the 3-4 caliber of doubly intaking.For piston is not rotated when moving up and down, on valve body 11 inwalls, also have relative piston guide groove 18 (as Fig. 3,4) several, preferably process in position perpendicular to the water inlet direction, go to the bottom on preferably trapezoidal into circular arc of the sectional shape of guide groove 18 can be worked into the screw thread on valve body top at the bottom of the valve always.Also being processed with discharge opening 13 on the sidewall that is lower than intake pipe on the valve body, can be circular, and diameter can be selected the water inlet caliber of 1/3-1/4, preferably processes valve body one side that faces at follow-up water pipe 16, at 1/2 caliber place, distance intake pipe base.At the bottom of valve, also have a scupper 15, be preferably circular, can miss the water seepage of trace.For strengthening, can paste the soft diaphragm seal (not drawing among the figure) that one deck does not hinder scupper 15 work in the valve bottom of stem lower portion at the sealing effect of full open position lower piston 12 with the valve rod connection place.

Piston 12 (Fig. 3, Fig. 5) be the round pipe at a band end, can select the anti-corrosion material that sufficient mechanical strength is arranged for use, outer surface is with valve body 11 close fit, the guide rail 17 that is processed with identical or close degree of finish and matches with valve body guide groove 18 is (as Fig. 3, Fig. 5), bottom centre is processed with the screw thread that matches with valve rod 2, can suitably strengthen the thickness at the end for ease of operation, can 2-3 doubly to wall thickness, discharge opening 14 can be opened following on the position of valve body discharge opening 13 same vertical lines near the base, size preferably equates, the height that piston 12 matches with valve body 11 should be not block water when being in the water supply state fully (as Fig. 1, open), discharge opening 13 when closing fully, 14 gang up be advisable (as Fig. 2, closing) fully.Guide groove 18 and guide rail 17 in order to the location on valve body 11, the piston 12 also can be processed on the other side's position.Be enhanced leaktightness, top at piston 12 also can be processed with the parallel groove of multiple tracks with the outer surface of piston change of state near the outside at edge, the upper and lower sides of the close discharge opening 14 in bottom, in order to embed the plastic sealing material 21,22 of wear-resisting tool (as Fig. 1, Fig. 2, Fig. 5)

Valve gap 8 is connected firmly with straight tube 10, screws piston 12, make it be close to boss 20 in stem bottom, cooperate the guide groove 18 on the valve body, discharge opening 13 is filled in the valve body 11, screws straight tube simultaneously and valve body is connected firmly, when at underground connection intake pipe, fall a piston valve and just can start working.Counterclockwise starting hand-wheel 3 drives valve rod and horizontally rotates, and relies on the valve stem piston that is threaded togather just to do relative movement on the Vertical direction, piston 12 along guide groove 18 in valve body to lower slider, piston is opened water intake gradually, water flows in the straight tube gradually; In the time of at the bottom of moving to valve, water valve is opened fully, just water flows to water outlet 9 (as Fig. 1).When water finishes when clockwise rotating handwheel, piston 12 can move upward again in the other direction, the upper edge of piston is closed intake pipe 16 gradually, until the upper edge of piston 12 touches the upper edge of intake pipe 16 and closes fully, to be blocked by the boss 20 of valve rod 2 at the bottom of the piston, this moment, the water of intake pipe was sealed, discharge opening 14 has moved to discharge opening 13 places and has ganged up fully simultaneously, water in the straight tube can unimpededly be discharged (Fig. 2) by discharge opening, like this, the water of straight tube promptly easily freezes the water at position just by thorough emptying.

Fall a piston valve and compare with existing water valve, owing to increased by a disconnected straight tube, make the control current The outlet pipe with the valve body piston of lowest water level same level face and peak level between separate one The section vertical range can be imbedded valve body and a part of straight tube undergroundly during use, close behind the handwheel minimum The above water of water level is just by thoroughly emptying, thereby can play desirable antifreezing effect, so cold The area does not need to worry cutting off the water supply for enduring cold of running water, makes the same unblocked of winter summer grade water. In addition, sometimes warmerly can not endure cold daytime, this moment is then at every turn all emptying after the water, Can install again at the outlet pipe place a common water nozzle additional, exhaust-valve in the time of so only need at night or worrying to endure cold Interior water gets final product.

Claims (1)

1. one kind is fallen a piston valve, by valve rod, gland nut, turnover water pipe, straight tube, valve body, piston, discharge opening on the valve body, discharge opening on the piston, scupper on the valve body and seal ring, spacing guide rail, guide groove, compositions such as boss, it is characterized in that this valve has one section to connect outlet pipe, the vertical tube of valve body, there are screw thread and boss in the valve rod lower end that is connected with handwheel, valve body has discharge opening and scupper, piston is one to be provided with discharge opening, in the external form that the end is arranged of certain space is arranged is the object of cylinder, its center, end is processed with the screw thread that matches with valve rod, can rely on screw thread to move up and down, have the groove that can be bumped into seal ring on the outer wall along valve rod.

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