CN2035823U

CN2035823U - Top-pushing water tap

Info

Publication number: CN2035823U
Application number: CN 88208306
Authority: CN
Inventors: 王心超
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-07
Filing date: 1988-07-07
Publication date: 1989-04-12

Abstract

The utility model relates to a water tap used at the terminal of the water supply pipe, which is used to solve the problems of the bad sealability of the traditional structure water tap, the water tap drip caused by the loosely closed handle, and the missing counting of the water meter. The top-pushing water tap uses a cam to be the actuating element; the steady opening points are interdependent, and can be opened and closed bidirectionally. The utility model can be made with different flow rates according to the structure of the cam, the minimum of the flow rate of the top-pushing water tap is larger than the starting flow of the metering of the water meter, and the phenomenon of the missing counting of the water meter is avoided. The utility model has the advantage of water saving.

Description

Top-pushing water tap

The utility model relates to a kind of tap water pipe line terminal water tap, be equipped with one-way valve and pressure spring in the one piece housing inner chamber of this tap connection supply channel, the lever drive rotating shaft makes actuation element---and cam rotation, utilize the eccentric structure pushing tow valve plug guide rod of cam to open and close water nozzle, constitute the push mode water tap.

Common spiral lift tap utilizes spiral opening/closing mechanism control tap water, the sealing gasket of tap is opened and closed twisting force repeatedly, wearing and tearing cause poorly sealed and water clock easily, when particularly this water clock is lower than water meter initiating flow, water meter can not normally measure and occur leak the meter phenomenon, causes economically loss to water utility.

In CN87207469, introduced a kind of water conserving tap that is used to solve above-mentioned water clock problem.This tap employing has Different Diameter and does the valve plug actuation element to the cam of profile, and cam is along its opening direction, and the radial mode surface curve is respectively isometrical circular arc, inclined-plane, isometrical circular arc and involute.The radially profile of above-mentioned cam constitutes and processes comparatively complexity, and cam can only unidirectionally rotarily open tap.

The utility model has been made improvement at cam structure, and purpose provides a kind of can avoiding and limits the push mode water tap that causes Lou meter because of the water meter measurement precision.

The utility model overall structure comprises that the described water conserving tap of element and assembling form and CN87207469 is roughly the same.In the one piece housing inner chamber of this tap connection supply channel unidirectional valve plug and the pressure spring thereof that an end has the pushing tow guide rod is housed, screwed pipe joint is equipped with on this piece housing top.Handle, rotating shaft and cam are connected as a single entity and are assemblied on the housing of the valve outside with sealing gland, cam is positioned near the valve plug pushing tow guide rod, keep a determining deviation between the two, the lever drive rotating shaft drives the cam rotation, when cam throw of eccentric during greater than cam and guide rod spacing, cam pushing tow valve plug guide rod is opened water tap.

The utility model has been made improvement at the cam structure design aspect, and its design phiolosophy has 2 points, and the one, cam has radially profile of symmetry, and two-way rotation all can be opened valve plug; The 2nd, stable the opening of cam a little respectively has independence mutually, stable open a little outside valve plug lean on spring and hydraulic action to close voluntarily.For this reason, the radially profile of cam can be processed into approximate parabolic shape, and parabolical summit is as the stable opening point of valve plug.Stablize on the opening point at cam, the valve plug guide rod acts on the power of cam just by the rotating shaft center, does not have deflection component, and cam is stable.Guide rod leaves that cam is stable to be opened a little, along cam radially the profile tangent direction produce component, impel cam deflection return, valve plug sealing tap water passage.Here, we claim that it is the single head cam that the cam of a stable opening point is arranged; The cam that two stable opening points are arranged is the double end cam; The cam that three stable opening points are arranged is three cams, and the rest may be inferred for other.Each opening point of cam is apart from axle center distance L difference, and the big I of its distance is according to selected with water state.Merit attention, the minimum turn-on flow rate of cam should be greater than the required initiating flow of water meter measurement.

Because this tap adopts the inner sealing structure, valve plug has good sealing effect, prolonged sealing gasket working life, solved the tap water water clock problem that water tap causes because of poor sealing, also solved simultaneously the water clock problem of the controlled generation of spiral lift tap minimum discharge, increase the accuracy of water meter measurement, prevented water tap generation weeping.This tap can utilize the spiral opening/closing mechanism, just can use behind the process and remould, has promptly saved materials processing, has reduced product cost again.

Introduce the utility model specific embodiment below in conjunction with accompanying drawing.

Fig. 1 is a push mode water tap general assembly structural representation.

Fig. 2 is three kinds of cam structure principle schematic.

Among Fig. 1, be equipped with the valve plug 10 of band pushing tow guide rod 1 in the piece housing 3 of connection supply channel, spring 11 compresses valve plug 10, and screwed pipe joint 12 is contained in this piece housing top.Guide runner on the pushing tow guide rod 1 is used for keeping valve plug 10 at the opening-closing process non-migration.Attachment screw 8 is connected as a single entity handle 7 and rotating shaft 5, and loam cake 4 is passed in rotating shaft 5, and gland 6 fixedly is assemblied on the housing 3.Cam 2 can select for use three cam (see figure 2)s to be installed in the rotating shaft 5, and turn-knob handle 7 cams 2 rotate, and pushing tow valve plug 10 moves and forms large, medium and small three kinds of flows.Sealing gasket 9 is contained on the valve plug 10.

Among Fig. 2, single head cam I, double end cam II, three cam III, each stable opening point (summit) is relatively independent, and the radially profile of each independent opening point is a near symmetrical parabola.Opening point is represented with L with the spacing of axle 5 among the figure.

Claims

A kind of push mode water tap, in one piece housing (3) inner chamber of its connection supply channel unidirectional valve plug (10) and pressure spring (11) thereof are housed, loam cake (4) is passed in rotating shaft (5), gland (6) is installed on the housing (3), turn-knob handle (7) drives cam (2) pushing tow valve plug guide rod (1) by rotating shaft (5), the radially profile that it is characterized in that above-mentioned cam (2) is symmetrical parabolic shape, parabolical summit is that valve plug (10) is stablized opening point, cam (2) can be processed into the single head cam, double end plush copper or three cams.