CN2252916Y

CN2252916Y - Valve core of water tap

Info

Publication number: CN2252916Y
Application number: CN 96218827
Authority: CN
Inventors: 邓运明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-07
Filing date: 1996-08-07
Publication date: 1997-04-23
Anticipated expiration: 2006-08-07

Abstract

The utility model relates to a valve core of a water tap used by cold water or hot water, and the utility model is composed of a valve rod, a movable sheet, a fixing sheet, a valve cover, and a sealing ring. The periphery of the valve is provided with a positioning block, the inner cavity of the valve cover is provided with a positioning block, the width of the groove of an O-shaped sealing ring is 1.2 to 2 times of the width of the diameter of the O-shaped sealing ring. The utility model has the advantages of reasonable inner positioning structure, long service life, light hand feeling, good sealing effect, and low cost.

Description

Faucet valve core

The utility model relates to a kind of faucet valve core, belongs to the plumbing utensil, the usefulness of the water tap of main heat supply water or cold water.

Existing faucet valve core is with reference to figure 1.Its deficiency is that valve rod 1 (the edge plastics of copper bar and bottom shown in containing on the figure) is used the global copper part, has both wasted valuable copper, and two positioning blocks 5 on it are difficult to be machined to.The rubbing surface place wear-resistant pad of copper valve rod and plastics valve gap, thereby valve gap easily is worn and scraps, working life is low.Valve rod 1 is not to use interior location with the location of valve gap 2, and location and using effect are bad.The O-ring seals groove designs unreasonablely, causes the bad or switch water tap (rotary valve rod) of sealability hard.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art and the faucet valve core that a kind of cost is low, reliability is high and be suitable for producing in enormous quantities is provided.

The purpose of this utility model can reach by following measure: the utility model is made up of valve rod, moving plate, stator, valve gap and seal ring, the valve rod cylindrical has positioning block, the valve gap inner chamber has positioning block, there is wear-resistant pad at valve rod and valve gap rubbing surface place, and valve rod O-ring seals groove width is 1.2-2 a times of O-ring seals diameter.

The drawing of accompanying drawing is described as follows:

Fig. 1 is total figure that analyses and observe of the present utility model;

Fig. 2 is the schematic representation of moving plate of the present utility model and stator involution state;

Fig. 3 is the schematic representation of moving plate and stator opening state;

Fig. 4 is for inlaying the sectional view of moulding valve rod, the A-A section of presentation graphs 5;

Fig. 5 is the top view of Fig. 4.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing: referring to Fig. 1-Fig. 5, the valve rod 1 that adopts copper to mould mold insert is loaded in the valve gap 2, the valve rod bottom has mountain font shift fork 3 clamping moving plate 4, valve rod middle part cylindrical has arc positioning block 5, the valve gap inner chamber has arc positioning block 6 to see Fig. 1 and Fig. 5, like this, guarantee that valve rod clamping moving plate does positive and negative each rotation of 45 °.Moving plate 4 is all made with porcelain with stator 7, and both faying surfaces are working surface 10, the switch of direct regulation and control water tap and the size of water amount, and there are two locating bumps the stator both sides, and the respective grooves of inserting the valve gap inner chamber is interior with fixing.On the moving stator working surface relative fan-

shaped sealing surface

8 and 9 is arranged respectively, remaining is fan-shaped relatively sees Fig. 2 and Fig. 3 for passage 11,12.During use, when dextrorotation rotating valve rod during together with moving plate to 45 °, water tap is closed and is seen Fig. 2, when being rotated counterclockwise valve rod together with moving plate to 45 °, water tap is opened and is seen Fig. 3, water enters from the below with the both sides outflow sees Fig. 1 and Fig. 3, when being in the angle between these 90 °, then is the water-outlet quantitys of the different sizes of water tap.There is ptfe plastic wear-resistant pad 15 at the rubbing surface place of valve rod and valve gap, and very wear-resisting, improve working life greatly.The groove 14 of the O-ring seals 13 on valve rod top, its width B is bigger than the diameter d of O-ring seals, is generally B=(1.2～2) d, is preferably (1.4-1.6) d.The neutral place is subjected to hydraulic pressure and causes the selfsealings of O-ring seals in the groove, and hydraulic pressure is big more, and sealing force is big more, and like this, the feel of switch water tap is light, and sealing effect is good.

The utility model contrast prior art has following advantage: 1, copper is moulded the mold insert valve rod than the copper valve rod processing appearance of prior art Easily, cost is low; 2, internal positioning structure is reasonable, the reliable and life-span height in location; 3, add the ptfe plastic pad, greatly improved Service life; 4, O shape sealing surface groove is widened, and feel is light, good sealing effect.

Claims

1, a kind of faucet valve core is characterized in that, the valve rod cylindrical has positioning block, and the valve gap inner chamber has positioning block, and valve rod and valve gap rubbing surface place add wear-resistant pad, and valve rod O-ring seals groove width is 1.2-2 a times of O-ring seals diameter.

2, faucet valve core according to claim 1 is characterized in that, valve rod is that copper is moulded mold insert.

3, faucet valve core according to claim 1 is characterized in that, valve rod O-ring seals groove width is preferably 1.4-1.6 times of O-ring seals diameter.