CN2401750Y

CN2401750Y - Hot and cold water mixing tap with burn proof device

Info

Publication number: CN2401750Y
Application number: CN 99248427
Authority: CN
Inventors: 陈正东
Original assignee: DAIYI INDUSTRY Co Ltd
Current assignee: DAIYI INDUSTRY Co Ltd
Priority date: 1999-10-13
Filing date: 1999-10-13
Publication date: 2000-10-18
Anticipated expiration: 2009-10-13

Abstract

The utility model relates to a hot and cold water mixing tap with an anti-scalding device. The center of a communicating pipe of a hot water switch base forms a longitudinal circular water pipeline base. A return channel is arranged between a communicating pipe of a cold water switch base and a central cut control base. The central section in the circular water pipeline base is provided with a water seal sheathing section which is sheathed and closely contacted with an anti-scalding water seal pipeline to seal water. The outer surface of the central section of the anti-scalding water seal pipeline is sheathed with a water seal ring. The utility model has the function that water temperature is constant after hot water and cold water are mixed.

Description

Be provided with the mixer tap of burn-proof device

The utility model relates to water tap, refers in particular to a kind of mixer tap that is provided with burn-proof device.

Mixer tap commonly used as shown in Figure 1, the both sides of faucet body 10 respectively form cold water inlet switch base 21 and hot water inlet's switch base 22 of L type pipeline, two switch bases 21 and the central authorities of 22 connecting tube that extend internally 13 are provided with cuts control seat 24, what this cut control seat 24 establishes basket strainer depotition cock 27 and depotition cock 28 up and down respectively, hot and cold water

entry switch seat

21 and 22 respectively is provided with hot and

cold water inlet

211 and 221, cut control by switch handle 25, central authorities cut control seat 24 and are controlled by the logical control switch 26 of cutting, mixed warm water is by basket strainer depotition cock 27 or depotition cock 28 water outlets, its major defect is: because water-heating boiler supplies water, its hydraulic pressure is more stable, and cold water is by tap water supply, its hydraulic pressure often because of water what, causes the hydraulic pressure instability, so hot and cold water tap 10 commonly used often causes warm water to neglect the cool heat of neglecting.

The purpose of this utility model is to provide a kind of mixer tap that is provided with burn-proof device, by anti-scald water stopping tube of installing and return passage on the connecting tube of water tap, the hydraulic pressure that makes hot water changes with the variation in water pressure of cold water, overcome the drawback of prior art, after reaching the hot and cold water mixing, keep the constant purpose of water temperature.

The purpose of this utility model is achieved in that a kind of mixer tap that is provided with burn-proof device, the both sides of faucet body respectively form cold water inlet switch base and hot water inlet's switch base of L type pipeline, the central authorities of the connecting tube that two switch bases extend internally are provided with cuts the control seat, what this cut control seat establishes basket strainer depotition cock and depotition cock up and down respectively, hot and cold water entry switch seat respectively is provided with the hot and cold water inlet, cut control by switch handle, central authorities cut the control seat and control mixed warm water by cutting the control switch, by basket strainer depotition cock or depotition cock water outlet, the connecting tube central authorities that it is characterized in that this hot-water switch seat form vertically circular water pipe seat, cut between the control seat in connecting tube of cold water switch seat and central authorities and to be provided with return passage, stage casing in this circular water pipe seat is provided with the sealing shrinking section, the anti-scald water stopping tube that is arranged with water stop ring for the stage casing outer surface is the fit of being close to sealing, form shallow annular groove between this sealing shrinking section upper and lower sides, each with anti-scald water stopping tube on the sheathed water stop ring of hypomere outer surface agree with sealing, the shallow annular groove of upside and pile warp central authorities cut the return passage at control seat rear and connect, and the outer wall of water pipe seat on the shallow annular groove of upside established the upper water-out mouth; The shallow annular groove of downside and sealing fit intersegmental then with connecting connecting tube that the hot-water switch seat in its outside extends, the shallow annular groove of downside is set water outlet cutting a wall of controlling by central authorities; The upper and lower water outlet of water pipe seat again and connect the connecting tube of cutting between the control seat of central authorities, this anti-scald water stopping tube is formed by outer sleeve and inner sleeve fit, outer sleeve the upper, middle and lower section each with cover ditch sheathed water stop ring, the inner tubal wall of each water stopping tube interannular respectively has ring-type hollow out hole slot at interval, inner sleeve central authorities in pipe seal into dividing plate and are not connected, the tube wall of hypomere also respectively has at interval hollow out hole slot of ring-type on the dividing plate, the hollow out hole slot of internal and external casing respectively with relative combination of shallow annular groove of sealing shrinking section.

Major advantage of the present utility model is: its anti-scald water stopping tube and return passage can be adjusted the inlet of hot water with the variation in water pressure of cold water, have the hot and cold water of maintenance and mix the constant effect of back water temperature.

Further specify below in conjunction with preferred embodiment and accompanying drawing.

Fig. 1 is the schematic representation of common features;

Fig. 2 is a structure decomposing schematic representation of the present utility model (broken section);

Fig. 3 assembled state schematic representation of the present utility model;

Fig. 4 is that hot and cold water of the present utility model mixes top cross-sectional view;

Fig. 5 is the main generalized section of looking for hot and cold water of the present utility model mixes;

Fig. 6 looks generalized section for obstruct hot water master of the present utility model.

Consult Fig. 2-Fig. 4, the both sides of faucet body 20 of the present utility model respectively form cold water inlet switch base 21 and hot water inlet's switch base 22 of L type pipeline, two switch bases 21 and the central authorities of 22 connecting tube that extend internally 23 are provided with cuts control seat 24, what this cut control seat 24 establishes basket strainer depotition cock 27 and depotition cock 28 up and down respectively, hot and cold water

entry switch seat

21 and 22 respectively is provided with hot and

cold water inlet

211 and 221, cut control by switch handle 25, control seat 24 is cut by cutting 26 controls of control switch by central authorities, mixed warm water is by basket strainer depotition cock 27 or depotition cock 28 water outlets, connecting tube 23 central authorities that it is characterized in that this hot-water switch seat 22 form vertically circular water pipe seat 27, cut 24 of control seats in connecting tube 23 of cold water switch seat 21 and central authorities and be provided with return passage 231, the water route pile warp is cut control seat 24 back side joints guide to water pipe seat 27, be nested with anti-scald water stopping tube 30 in the water pipe seat 27; Stage casing in this circular water pipe seat 27 is provided with sealing shrinking section 271, the anti-scald water stopping tube 30 that is arranged with water stop ring 311 for the stage casing outer surface is the fit of being close to sealing, form shallow annular groove 272,273 between these sealing shrinking section 271 upper and lower sides, each with anti-scald water stopping tube 30 on the sheathed water stop ring 312,313 of hypomere outer surface agree with sealing, the shallow annular groove 272 and the pile warp central authorities of upside cut the return passage 231 at control seat 24 rears and connect, and the outer wall of water pipe seat 27 on the shallow annular groove 272 of upside established upper water-out mouth 274; 271 of the shallow annular groove 273 of downside and sealing shrinking sections then with connecting connecting tube 23 that the hot-water switch seat 22 in its outside extends, the bottom of water pipe seat 27 under the shallow annular groove 271 of downside is convexly equipped with catch 275, the inner sleeve 32 that prevents anti-scald water stopping tube 30 falls to water pipe seat 27 bottoms, and the shallow annular groove 271 of downside is set water outlet 276 at the wall of cutting control seat 24 by central authorities; The upper and lower water outlet 274,276 of water pipe seat 27 again and connect the connecting tube 23 of cutting between the control seat 24 of central authorities, the upper end open of water pipe seat 27 is established internal thread 277 and can be screwed in hypomere osculum 41 and the inboard gag body 40 of establishing terrace edge 42 thereof are arranged, prop up the outer sleeve 31 of anti-scald water stopping tube 30 and prevent inner sleeve 32 by upper punch to gag body 40 tops.

This anti-scald water stopping tube 30 is formed by outer sleeve 31 and inner sleeve 32 fits, outer sleeve 31 the upper, middle and lower section each with cover ditch sheathed water stop ring 312,311,313, inner tubal wall between each water stop ring respectively has ring-type hollow out hole slot 314 at interval, inner sleeve 32 central authorities in pipe seal into dividing plate and are not connected, the tube wall of hypomere also respectively has ring-type hollow out hole slot 321 at interval on the dividing plate, in it behind external

diameter sleeve pipe

31,32 mutual fits with in the water pipe seat 27 of vertically packing into, the hollow out hole slot 314,321 that makes internal and

external casing

31,32 respectively with shallow annular groove 272, the 273 relative combinations of sealing shrinking section 271.

Consult Fig. 4-Fig. 6, when using the utility model, when the hydraulic pressure of both sides hot and cold water is in when equating, the internal and external casing 31 of anti-scald

water stopping tube

30,32 separately on outer wall, the relative hollow out hole slot 314 of following both sides, 321 can make cold, each hollow out hole slot 314 of hot water since upper and lower sides, 321 on average enter back inner sleeve 32, under intercepting, central baffle keeps state of equilibrium up and down, then hot and cold water is separately again from inner sleeve 32 upper and lower ports and water pipe seat two water outlets 274 about in the of 27,276 outflows mixed in the connecting tube 23 in water pipe seat 27 outsides, double-head arrow as shown, what enter central authorities again cuts control seat 24, is cut the cutting control of control switch 26 and dials to change and mix stream of warm water depotition cock 28 water outlets of basket strainer 27 or below upward.

During when the minimizing of cold water hydraulic pressure and less than pressure of hot water, the dividing plate of its inner sleeve 32 central authorities will up be pushed away out symmetrical position by pressure of hot water, make the hollow out hole slot 314,321 of inside and

outside sleeve pipe

31,32 stagger and stop hot water and enter inner sleeve 32, only have cold water to be flowed out to the connecting tube 23 in water pipe seat 27 outsides by inner sleeve 32 upper end-hole and water pipe seat 27 upper water-out mouths 274 this moment, single as shown arrow is avoided being scalded by hot water because of the too high user of water temperature.

The foregoing description is the embodiment of the mixing tap of three handles, also applicable on the mixing tap of double handle, similarly the connecting tube central authorities at hot water beginning seat form a vertically circular water pipe seat, cut between the control seat in connecting tube of cold water switch seat and central authorities again and establish a return passage, the water route pile warp is cut control seat back side joint to be guided to the water pipe seat and gives connection, be engaged in and be nested with one group of anti-scald water stopping tube that forms by an outer sleeve and an inner sleeve fit in the water pipe seat, wherein the difference of double handle mixing tap and three handle mixing taps is only different at the switching construction of cutting the control seat of central authorities, the action principle of burn-proof device is same, so do not repeat.

Claims

1, a kind of mixer tap that is provided with burn-proof device, the both sides of faucet body respectively form cold water inlet switch base and hot water inlet's switch base of L type pipeline, the central authorities of the connecting tube that two switch bases extend internally are provided with cuts the control seat, what this cut control seat establishes basket strainer depotition cock and depotition cock up and down respectively, hot and cold water entry switch seat respectively is provided with the hot and cold water inlet, cut control by switch handle, central authorities cut the control seat and control mixed warm water by cutting the control switch, by basket strainer depotition cock or depotition cock water outlet, the connecting tube central authorities that it is characterized in that this hot-water switch seat form vertically circular water pipe seat, cut between the control seat in connecting tube of cold water switch seat and central authorities and to be provided with return passage, stage casing in this circular water pipe seat is provided with the sealing shrinking section, the anti-scald water stopping tube that is arranged with water stop ring for the stage casing outer surface is the fit of being close to sealing, form shallow annular groove between this sealing shrinking section upper and lower sides, each with anti-scald water stopping tube on the sheathed water stop ring of hypomere outer surface agree with sealing, the shallow annular groove of upside and pile warp central authorities cut the return passage at control seat rear and connect, and the outer wall of water pipe seat on the shallow annular groove of upside established the upper water-out mouth; The shallow annular groove of downside and sealing fit intersegmental then with connecting connecting tube that the hot-water switch seat in its outside extends, the shallow annular groove of downside is set water outlet cutting a wall of controlling by central authorities; The upper and lower water outlet of water pipe seat again and connect the connecting tube of cutting between the control seat of central authorities, this anti-scald water stopping tube is formed by outer sleeve and inner sleeve fit, outer sleeve the upper, middle and lower section each with cover ditch sheathed water stop ring, the inner tubal wall of each water stopping tube interannular respectively has ring-type hollow out hole slot at interval, inner sleeve central authorities in pipe seal into dividing plate and are not connected, the tube wall of hypomere also respectively has at interval hollow out hole slot of ring-type on the dividing plate, the hollow out hole slot of internal and external casing respectively with relative combination of shallow annular groove of sealing shrinking section.