CN2361917Y - Leakproof water tap - Google Patents

Abstract

The utility model relates to a leakproof water tap, which solves the problems of complicated structure, easy part damage in repair, and easy leakage of a sealing part on a disk root existing in water taps and stop valves used at present. The utility model is characterized in that a water flow hole is arranged on a valve core, an inner cavity of the valve core is a water flow channel, and the upper end of the valve core is provided with a flow blocking element; a switch jacket is in screw connection with the valve body which is arranged in an inner chamber part, the upper end of the switch jacket is provided with a sealing ring, and the lower end of the switch jacket is a water outlet; an inner hole of the sealing ring is tightly sheathed on the outer cylindrical surface of the upper end of the inner chamber part, and the lower end surface of the valve core is supported and lain on an inner step surface of the switch jacket. The water faucet can be used as a common water tap, and can also be used on a pipeline to replace the stop valve.

Description

The leakage proof water nozzle

The utility model relates to a kind of valve, particularly a kind of leakage proof water nozzle.

There is the problem of three aspects in the water tap of current application and be used for stop valve on the pipeline: the one, and complex structure has 10 left and right sides parts to constitute, and part is more, thus the cost height; The 2nd, the threaded connection place as fastening usefulness on it is more, and easily rust is dead, and the mounting or dismounting difficulty also easily causes damage parts during maintenance, and valve is scrapped; The 3rd, they all are the packing_seals that adopts hold-down button in the sealing of center bolt upper end, use for a long time to produce easily generation seepage of wearing and tearing, carry liquid when being used in pipeline especially, and the occasion that back-pressure is bigger, seepage are inevitable especially.

The purpose of this utility model provides a kind of simple in structure, changes traditional hold-down button sealing, does not produce seepage, and is special when having back-pressure, also is difficult for producing the water nozzle of seepage.

The utility model is to realize like this, a kind of leakage proof water nozzle, it has valve body, water passage hole is divided into mistress and inner room with valve inner, and mistress's a end is a water intake, and spool is arranged in the inner room, it is characterized in that having on the spool water flow hole, its inner chamber is a flow channel, and choked flow is equipped with in its upper end, and the working surface of choked flow can be plane, sphere or the conical surface; The switch overcoat is contained in to be threaded on the valve body of inner room part, a seal ring is equipped with in its upper end, the endoporus of seal ring tightly is enclosed within on the external cylindrical surface of inner room part upper end, and the lower end of switch overcoat is a water outlet, and the lower end surface of spool rests on the step surface of its inner chamber.

In order to strengthen, a circumferential groove is arranged on the ring inner hole interior edge face in the leak resistance that back-pressure situation lower seal is arranged.

For the water that has switch overcoat and valve core chamber can be smoothly flowed out from water outlet, on the step surface of the lower end surface of spool or switch overcoat inner chamber, have tank.

When opening this water nozzle, counterrotating switch overcoat moves downward it, and spool moves downward under gravity and water flow pressure effect, and choked flow is opened water passage hole, and water flows to from water intake, and through the mistress, water flow hole on the spool and flow channel flow out from water outlet.When closing water nozzle, be rotated in the forward the switch overcoat, it is moved upward, its interior step surface just drives spool and moves upward.Choked flow is shut water passage hole, and current stop.Have only five parts in the utility model, structure is very simple, and its spool can form with plastic injection-moulded, so cost is low.In addition, not as being threaded of fastening usefulness, so rustless dead possibility is easy for assembly, disassembly and maintenance in the utility model, can part of damage, when the utility model used as waterpipe terminal tap, water was high in and low out, and main current do not have back-pressure, the water that from spool and valve body inner room gap, flows through, can in spool lower end surface or switch overcoat, flow out to the main current by the tank on the step surface, and can be along switch overcoat and valve body thread pitch overflow, so there is not seepage.When the utility model level or upwards install and use or exist on the aqueduct of back-pressure when using as stop valve, water can flow to seal ring from the thread pitch of switch overcoat and valve body.Seal ring is tightly to be enclosed within on the external cylindrical surface of valve body, seal, the more important thing is that this water with pressure affacts on the groove face of seal ring interior edge face, can make the groove face distortion, make one side of groove tighter push down the valve body external cylindrical surface, back-pressure is bigger, that presses is tighter, sealing better, so also be difficult for producing seepage, in addition since seal ring to foreign round the degree that compresses of cylinder be whether existence with back-pressure reaches size and change, therefore compare all little many of the wearing and tearing of seal ring and valve body external cylindrical surface with adopt the packing_seal that is under the high pressure always.This water nozzle can be used as general water tap, also can be used on the pipeline, replaces stop valve.

Accompanying drawing 1 is a structural drawing of the present utility model;

Accompanying drawing 2 is a P of the present utility model portion enlarged view;

Below in conjunction with accompanying drawing the utility model is described in detail.

As can be seen from Figure 1, in the inside of valve body 1, water passage hole 2 is divided into mistress 3 and inner room 4 with it.Mistress 3 left end is a water intake 5.4 li spool 6 is arranged at inner room, have 4 water flow holes 7 on the spool 6, its inner chamber is a flow channel 8.On the choked flow 9 tight covers conical head 10 thereon that the upper-end surface of spool 6 rubber is made, the working surface of choked flow is a conical surface.Switch overcoat 11 usefulness are threaded and are contained on the valve body of inner room 4 parts, and rubber seal 12 is equipped with in the upper end of switch overcoat, and its lower end is a water outlet 13.2 find out in conjunction with the accompanying drawings, and seal ring 12 is to be fixed on the convex edge 14 of switch overcoat 11 with its groove.The endoporus of seal ring 12 tightly is enclosed within on the external cylindrical surface 15 of inner room 4 parts upper end, and a circumferential groove 16 is arranged on the interior edge face of endoporus, and flute profile is a V-arrangement.The lower end conical surface 17 of spool 6 rests on the type conical bench face of switch overcoat 11 inner chambers, and 4 road tanks 18 are arranged on this step surface.In the present embodiment, rotary switch overcoat 11 can be realized the opening and closing of water nozzle, the closed condition of the water nozzle that is depicted as among the figure.

Claims (3)

1, a kind of leakage proof water nozzle, it has valve body, water passage hole is divided into mistress and inner room with valve inner, mistress's a end is a water intake, spool is arranged in the inner room, it is characterized in that having on the spool water flow hole, its inner chamber is a flow channel, choked flow is equipped with in its upper end, and the working surface of choked flow can be plane, sphere or the conical surface; The switch overcoat is contained in to be threaded on the valve body of inner room part, a seal ring is equipped with in the upper end of switch overcoat, the endoporus of seal ring tightly is enclosed within on the external cylindrical surface of inner room part upper end, and the lower end of switch overcoat is a water outlet, and the lower end surface of spool rests on the step surface of switch overcoat inner chamber.

2, leakage proof water nozzle according to claim 1 is characterized in that a circumferential groove is arranged on the interior edge face of ring inner hole.

3, leakage proof water nozzle according to claim 1 and 2 is characterized in that having tank on the step surface of the lower end surface of spool or switch overcoat inner chamber.

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