CN205859226U - A kind of water mixing valve - Google Patents

Abstract

This utility model provides a kind of water mixing valve, belongs to field of mechanical technique.It solve the problems such as existing water mixing valve lower water temperature is the most accurate.This water mixing valve includes valve body and spool, and valve body upper end connects valve rod assembly, and valve body has cold water intake tunnel, hot water intake tunnel and warm water exhalant canal；Spool includes movable fuse and temperature-sensitive element, the upper port of movable fuse connects with warm water exhalant canal, in the lower end of movable fuse is vertically installed in hot water intake tunnel and its lower port faces cold water intake tunnel, having annular convex ring on the inwall of valve body, the lower surface of movable fuse has the annular water portion excessively that the upper surface with bulge loop faces；The temperature-sensitive end of temperature-sensitive element is fixed in the inner chamber of movable fuse, and the telescopic end of temperature-sensitive element is resisted against on valve rod assembly；Being fixedly connected with a point water impeller in cold water intake tunnel, being connected between point water impeller with movable fuse has spring one.This utility model improves the lower water temperature precision of water mixing valve.

Description

A kind of water mixing valve

Technical field

This utility model belongs to field of mechanical technique, relates to a kind of valve, particularly relates to a kind of water mixing valve.

Background technology

It is the most common valve that water mixing valve is also called mixing valve, will be mixed in standard GB/T21465-2008 " valve term " Conjunction valve is defined as: the ratio affecting two or more inlet flow rate by changing the position of opening and closing element goes out jointly with formation one The valve of mouth flow.Water mixing valve is frequently used to mix cold water and hot water, is generally used for mixing the mixed of cold water and hot water Water valve is three-way valve, and the valve body of three-way valve includes that two water inlets, a mixed water cavity and an outlet, cold water and hot water are respectively Flowing into valve body from two water inlets and mix in mixed water cavity, the warm water mixed flows out from outlet and directly makes for user With.Common water mixing valve regulates the leaving water temperature of warm water often through the manual spool of user, and this regulative mode is at cold water Or can not react in time when the flow of hot water changes, the water temperature causing warm water is sometimes hot and sometimes cold, user is made to use inconvenience.

Chinese patent literature data is open propose a kind of triplet constant temperature adjustable water mixing valve [application number: CN200820122638.2；Publication number: CN201259006Y], its parts include adjusting handle device, cold water valve seat, hot water valve Seat, valve body, push rod, temperature-sensing element, back-moving spring, location nut, homoiothermic nut；Valve body has cold water inlet, cold Have hot water or cold water on the valve body on water water inlet opposite and blend the mouth of a river, be perpendicular on the valve body of cold water inlet have hot water and enter The mouth of a river；Homoiothermic handwheel devices screws togather on the valve body being arranged on one end corresponding with water inlet of hot water, installs in homoiothermic handwheel devices There is the homoiothermic nut screwed togather with valve body, the location nut of spacing push rod is installed in homoiothermic nut；Cold water with limbers Valve seat screws togather the valve body intracavity in the nut front, location being arranged in valve body, the body cavity between cold water valve seat and location nut For cold water area；The water inlet of hot water of valve body is hot water valve seat, hot water valve seat and valve body casting；Temperature-sensing element is arranged on Between hot water valve seat and cold water valve seat in valve body, it is provided with conical surface hot water flap in one end of temperature-sensing element contact hot water, contact One end of cold water is provided with conical surface cold water flap；It is socketed with back-moving spring in the outside of temperature-sensing element；Diameter is less than on cold water valve seat The push rod of limbers is arranged in one end of temperature-sensing element contact cold water, and push rod passes conical surface cold water flap；Temperature-sensing element Outer surface is provided with limbers.

Although this constant temperature adjustable water mixing valve can realize realizing constant-temperature effluent by being automatically adjusted, but temperature-sensing element One end direct contact heat water other end directly contacts cold water, and cause that temperature-sensing element touches is not real mixing water water temperature, The water temperature that the deformation that so temperature-sensing element occurs is regulated is the most accurate, is unfavorable for the use of water mixing valve.

Summary of the invention

The purpose of this utility model is the problems referred to above existed for prior art, it is proposed that a kind of water mixing valve, solution Technical problem is how to improve the lower water temperature precision of water mixing valve.

The purpose of this utility model can be realized by following technical proposal:

A kind of water mixing valve, including valve body and the spool being arranged in valve body, described valve body upper end is fixedly connected with bonnet, institute Stating threaded on bonnet has valve rod assembly, and described valve body has cold water intake tunnel, the hot water intake tunnel being interconnected With warm water exhalant canal；Described spool includes movable fuse and temperature-sensitive element, the lateral wall of described movable fuse upper end and valve body Inwall between be provided with sealing ring and form sealing in the lump；It is characterized in that, the upper port of described movable fuse and warm water water outlet Channel connection, in the lower end of described movable fuse is vertically installed in hot water intake tunnel and the lower port of described movable fuse is the most right Cold water intake tunnel, on the inwall of described valve body, the intersection at cold water intake tunnel and hot water intake tunnel has protrusion Annular convex ring, the lower surface of described movable fuse has the annular water portion excessively that the upper surface with bulge loop faces；Described temperature-sensitive unit The temperature-sensitive end of part is fixed in the inner chamber of movable fuse, the telescopic end of described temperature-sensitive element pass movable fuse upper end and against On valve rod assembly；Being fixedly connected with tubular point of water impeller in described cold water intake tunnel, described point of water impeller is with movable Connect between the lower end of fuse and have spring one.

During water mixing valve water flowing, hot water is passed through valve body from hot water intake tunnel, and cold water enters valve body, heat from cold water intake tunnel Cross the gap location between water subordinate's end face from bulge loop upper surface and movable fuse after current superheated water intake tunnel to flow into, cold water from Flowing at the central through hole of bulge loop, hot water and cold water region between movable fuse lower surface and bulge loop upper surface cross mixed Close, then be flowed in movable fuse inner chamber.It is fixedly connected with handwheel toward contact on valve rod assembly, handwheel has mark temperature Groove.During design temperature, rotation handwheel is to suitable position, and at this moment valve rod assembly moves to the position set with handwheel.Mixed water When valve does not also have water flowing, the temperature at temperature-sensitive element is generally the room temperature temperature less than setting, and temperature-sensitive element is in initial contraction State, during water mixing valve water flowing, temperature-sensitive element is resisted against on valve rod assembly by thermal stretching, the telescopic end of temperature-sensitive element.When mixing When water temperature is higher than setting value, temperature-sensitive element continues elongation, so that the lower end of movable fuse moves down so that bulge loop upper surface And the gap that movable fuse is crossed between water subordinate's end face diminishes, and the flow of hot water inflow activity fuse inner chamber reduces, mixing water Temperature reduces.When the water temperature of mixing is less than setting value, temperature-sensitive element shortens, so that the lower end of movable fuse moves up, The gap making bulge loop upper surface and movable fuse cross between water subordinate's end face becomes big, the flow of hot water inflow activity fuse inner chamber Increasing, the temperature of mixing water raises.Being automatically adjusted by spool so that from the water temperature holding of the water that warm water exhalant canal flows out Setting value, facilitates user directly to use.

Because the temperature-sensitive end of temperature-sensitive element is fixed in the inner chamber of movable fuse, it is therefore prevented that the temperature-sensitive end of temperature-sensitive element is direct Contact hot water or directly contact cold water, making temperature-sensitive element temperature-sensitive end can preferably touch mixed warm water, so that Temperature-sensitive element telescopic end makes accurate reaction, improves the lower water temperature precision of water mixing valve.

In above-mentioned water mixing valve, the inwall of described movable fuse has the fixed strip of a plurality of annular equidistant arrangement, institute State the lateral surface of temperature-sensitive element temperature-sensitive end and the medial surface of fixed strip against, the lower end of a plurality of described fixed strip is obliquely inwardly extending And connect at the axis of movable fuse thus form location division, the lower surface of described location division protrusion activity fuse, described work Having downwardly projecting annular baffle ring on the lower surface of dynamic fuse, the diameter of described baffle ring lateral surface is straight less than bulge loop medial surface Footpath.

Location division is formed by the lower end of fixed strip is obliquely inwardly extending, so can ensure that the temperature-sensitive end of temperature-sensitive element is positioned at Movable fuse is interior and is possible to prevent temperature-sensitive element to pass from the lower end of movable fuse, thus ensures the temperature-sensitive end in contact of temperature-sensitive element To be mixed warm water, make temperature-sensitive element telescopic end make the reaction of actual mixed water temperature, thus improve water mixing valve Lower water temperature precision.The lower surface of movable fuse arranges baffle ring and can ensure that the water entered in movable fuse inner chamber is mixed Heshui, thus being further ensured that the temperature-sensitive termination of temperature-sensitive element contacts is mixed warm water.

In above-mentioned water mixing valve, described valve rod assembly includes valve rod, spring two and the plug threadeded with bonnet, institute The upper end stating valve rod is fixedly connected with handwheel, and the lower surface of described valve rod caves inward formation blind hole, outside the lower end of described plug There is on side the annular shoulder block one of protrusion, the lower surface of described plug caves inward formation install hole slot, described plug and Spring two is arranged in blind hole, and the upper end of described spring two is resisted against on the bottom surface of blind hole, and the lower end of described spring two is set in On plug and be resisted against on shoulder block one, the telescopic end of described temperature-sensitive element extend in installing hole slot and is resisted against installs hole slot On bottom surface.

Spring two and plug are set the telescopic end of temperature-sensitive element is had cushioning effect when elongation, be possible to prevent temperature-sensitive unit The telescopic end of part abuts directly against the damage of the temperature-sensitive element produced on valve rod, such as bends, such that it is able to avoid temperature-sensitive unit Lower water temperature caused by the damage of part inaccurate, it is ensured that the precision of water mixing valve lower water temperature.

In above-mentioned water mixing valve, it is provided with in described point of water impeller in circular spring base, outside described spring base It is provided with sealing ring two and forms sealing between side and point water impeller inwall；On the lateral surface of described point of water impeller, there is protrusion Multiple splitter vanes of circular array, the upper end of described splitter vane upwardly extends to be formed protrudes point water impeller upper surface Upper butting section, the upper end of described upper butting section is resisted against on the lower surface of bulge loop；The lower end of described splitter vane downwardly extends shape Becoming to protrude the lower butting section of point water impeller lower surface, described lower butting section extends internally and connects shape at the axis of point water impeller Become fixed part；The lower end of described spring one is resisted against on fixed part, and the upper end of described spring one is resisted against on the lower end of spring base, The annular that described spring base upper surface has protrusion divides water ring, described point of water ring to face the lower surface of bulge loop；Adjacent two institutes Stating and had aquaporin between splitter vane, the location division of described movable fuse is resisted against on the upper surface of spring base.

Cold water arrives when dividing water impeller, and the cold water of a part is by arriving after the inner chamber of point water impeller and the through hole of spring base In inflow activity fuse, then the cold water of another part arrive the lower surface of bulge loop by the aquaporin of crossing of point water impeller lateral surface Entered in movable fuse by the gap between bulge loop lower surface and point water ring upper surface.Can also be by the lower end of point water impeller Mouth is closed, and cold water is only from crossing aquaporin flow direction activity fuse.When the water temperature of mixing is higher than setting value, temperature-sensitive element extends, from And make the lower end of movable fuse move down and promote spring base to move down so that bulge loop lower surface and point water ring upper surface it Between gap become big, the flow of cold water inflow activity fuse inner chamber increases, and the temperature of mixing water reduces.When the water temperature of mixing is less than During setting value, temperature-sensitive element shortens so that the lower end of movable fuse moves up, spring one effect lower spring cup upwards Mobile so that the gap between bulge loop lower surface and point water ring upper surface diminishes, and the flow of cold water inflow activity fuse inner chamber subtracts Little, the temperature of mixing water raises.Being automatically adjusted by spool so that keep setting from the water temperature of the water of warm water exhalant canal outflow Definite value, facilitates user directly to use.Because the flow of cold water can be by between bulge loop lower surface and point water ring upper surface The change in gap realizes regulation, and regulates cold water flow while regulation hot water flow so that the regulation process of spool is more Quickly, improve the lower water temperature precision of water mixing valve.

In above-mentioned water mixing valve, the fixed part of described point of water impeller upwardly extends formation lead, described spring one Lower end is set on lead, upwards caves in and form the locating slot of annular, described spring one upper in the lower surface of described spring base Hold in being arranged on locating slot and be resisted against the bottom surface of locating slot.

Spring one it is possible to prevent to be shifted in spring one is fixedly mounted on point water impeller by locating dowel and locating slot, Thus the situation that cannot regulate cold water flow avoiding spring one displacement to cause, advantageously ensure that the lower water temperature essence of water mixing valve Degree.

In above-mentioned water mixing valve, the lateral surface of the location division of described movable fuse have shoulder block two, described shoulder block two Being resisted against on the upper surface of spring base, the lower end of described location division is positioned at the through hole of spring base.So can make slide core Forming effective linkage with spring base, the lower end of location division is positioned at the through hole of spring base and is possible to prevent movable fuse and spring base Occur separate after again against time occur dislocation thus affect cold water flow regulation situation, advantageously ensure that water mixing valve water temperature adjust Joint precision.

In above-mentioned water mixing valve, the water inlet of described cold water intake tunnel is threaded to be had and has connecing of central through hole Head, is provided with check-valves in described joint, be provided with sealing ring three also between lateral surface and the inwall of joint of described check-valves Formed and seal, the inwall of the outlet of described joint has shoulder block three, the inwall of the water inlet of described joint has shoulder block Four, described shoulder block three is resisted against on the lower butting section of point water impeller, and the water side of described check-valves is resisted against under point water impeller On butting section, the water inlet end of described check-valves is resisted against on shoulder block four.

Arranging joint can be by point removable being fixed in cold water intake tunnel of water impeller, when zero of cold water intake tunnel Part needs can be very convenient by being replaced after pulling down joint when changing.Check-valves is set in joint and is possible to prevent heat Water is flowed in the cold water pipe that joint connects, and reduces the waste of heat.

In above-mentioned water mixing valve, the lower port of described point of water impeller is closed.The lower port dividing water impeller closes upper cold water All passing through in the aquaporin excessively of point water impeller lateral surface, the inflow of cold water can all be regulated by spool and spring base, Advantageously ensure that the lower water temperature precision of water mixing valve.

Compared with prior art, this utility model has the advantage that

By arranging movable fuse and bulge loop and being fixed on by the temperature-sensitive end of temperature-sensitive element in movable fuse, improve mixed water The lower water temperature precision of valve.Further through arranging the regulation dividing water impeller and spring base to realize cold water flow, improve mixed further The lower water temperature precision of water valve.Stator, baffle ring and location division are set further through on movable fuse, valve rod arranges bullet Spring two and plug, arrange locating slot on spring base and arrange lead on point water impeller, being further ensured that water mixing valve Lower water temperature precision.Jointing and fixedly mount check-valves in joint in cold water intake tunnel, thus prevents heat again Water is flowed in cold water pipe, reduces the waste of heat.

Accompanying drawing explanation

Fig. 1 is the sectional view of this water mixing valve；

Fig. 2 is the explosive view of this water mixing valve；

Fig. 3 is the three-dimensional structure diagram one of movable fuse；

Fig. 4 is the three-dimensional structure diagram two of movable fuse；

Fig. 5 is the three-dimensional structure diagram of point water impeller；

Fig. 6 is the sectional view of point water impeller；

Fig. 7 is the enlarged drawing at the A in Fig. 1.

In figure, 1, handwheel；2, valve body；2a, cold water intake tunnel；2b, hot water intake tunnel；2c, warm water exhalant canal； 2d, bulge loop；3, spool；3a, movable fuse；3a1, fixed strip；3a2, location division；3a2a, shoulder block two；3a3, baffle ring；3a4, mistake Water portion；3b, temperature-sensitive element；3c, sealing ring one；4, bonnet；5, valve rod assembly；5a, valve rod；5a1, blind hole；5b, spring two；5c、 Plug；5c1, shoulder block one；5c2, installation hole slot；6, water impeller is divided；6a, splitter vane；6b, upper butting section；6c, lower butting section； 6d, fixed part；6d1, lead；6e, excessively aquaporin；7, spring one；8, spring base；8a, point water ring；8b, locating slot；9, seal Circle two；10, joint；10a, shoulder block three；10b, shoulder block four；11, check-valves；12, sealing ring three；13, valve pocket.

Detailed description of the invention

The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further Description, but this utility model is not limited to these embodiments.

Embodiment one

As shown in Fig. 1-Fig. 7, a kind of water mixing valve includes valve body 2 and the spool 3 being arranged in valve body 2, and valve body 2 has phase Intercommunicated cold water intake tunnel 2a, hot water intake tunnel 2b and warm water exhalant canal 2c, the inwall of valve body 2 is intake at cold water The intersection of passage 2a and hot water intake tunnel 2b has the annular convex ring 2d of protrusion；Valve body 2 threaded upper ends connects bonnet 4, Threaded on bonnet 4 have valve rod assembly 5.Valve rod assembly 5 includes valve rod 5a, spring two 5b threadeded with bonnet 4 and blocks up Head 5c, the upper end of valve rod 5a is fixedly connected with handwheel 1, and the upper end of valve rod 5a is inserted into the lower end of handwheel 1 and forms spline connection, It is provided with opening jump ring between handwheel 1 and valve rod 5a and forms axial restraint.Typically be additionally provided with on handwheel 1 temperature scale line or Person's temperature regulation arrow.Valve body 2 upper end is also fixedly connected with valve pocket 13, and bonnet 4 is in valve pocket 13, and handwheel 1 is at valve pocket 13 Top；Valve pocket 13 can protect bonnet 4 to make bonnet 4 arbitrarily not turned.The lower surface of valve rod 5a caves inward formation blind hole Having annular shoulder block one 5c1 of protrusion on the lower end outside face of 5a1, plug 5c, the lower surface of plug 5c caves inward formation Installing hole slot 5c2, plug 5c and spring two 5b is arranged in blind hole 5a1, the upper end of spring two 5b is resisted against the bottom surface of blind hole 5a1 On, the lower end of spring two 5b is set on plug 5c and is resisted against on shoulder block one 5c1.

Spool 3 includes movable fuse 3a and temperature-sensitive element 3b, the lateral wall of movable fuse 3a upper end and the inwall of valve body 2 it Between be provided with sealing ring one 3c and form sealing, the upper port of movable fuse 3a connects with warm water exhalant canal 2c, activity fuse The lower end of 3a is vertically installed in hot water intake tunnel 2b and the lower port of described movable fuse 3a faces cold water intake tunnel 2a, the lower surface of movable fuse 3a has the annular water portion 3a4 excessively that the upper surface with bulge loop 2d faces, crosses water portion 3a4 permissible It is the structure of protrusion activity fuse 3a lower surface, it is also possible to be the annular region of movable edge, fuse 3a lower surface；Temperature-sensitive unit The temperature-sensitive end of part 3b is fixed in the inner chamber of movable fuse 3a, and the telescopic end of temperature-sensitive element 3b passes the upper end of movable fuse 3a also It extend in hole slot 5c2 is installed and be resisted against on the bottom surface installing hole slot 5c2.On the inwall of movable fuse 3a, there is a plurality of annular The fixed strip 3a1 of equidistant arrangement, can be such as 3,4,5 or 6, and the lateral surface of temperature-sensitive element 3b temperature-sensitive end is with solid Determine the medial surface of bar 3a1 against, water by the gap between fixed strip 3a1 and directly can connect with temperature-sensitive element 3b temperature-sensitive end Touch；The lower end of a plurality of fixed strip 3a1 is obliquely inwardly extending and connects at the axis of movable fuse 3a thus forms location division 3a2, the lower surface of location division 3a2 protrusion activity fuse 3a, the lateral surface of the location division 3a2 of movable fuse 3a has shoulder block two 3a2a；Having downwardly projecting annular baffle ring 3a3 on the lower surface of movable fuse 3a, the diameter of baffle ring 3a3 lateral surface is less than convex The diameter of ring 2d medial surface.

It is fixedly connected with tubular point of water impeller 6 in cold water intake tunnel 2a, is provided with in circular in point water impeller 6 Spring base 8, be provided with sealing ring 29 and form sealing between the lateral surface of spring base 8 and point water impeller 6 inwall, spring base 8 Upper surface has the annular of protrusion and divides water ring 8a, and point water ring 8a faces the lower surface of bulge loop 2d, and the lower surface of spring base 8 is upwards The locating slot 8b that concave shape circularizes.Divide multiple splitter vanes of the circular array on the lateral surface of water impeller 6 with protrusion 6a, had aquaporin 6e between adjacent two splitter vane 6a.The upper end of splitter vane 6a upwardly extends formation and protrudes a point water The upper butting section 6b of impeller 6 upper surface, the upper end of upper butting section 6b is resisted against on the lower surface of bulge loop 2d.Under splitter vane 6a End is downwardly extending to protrude and divides the lower butting section 6c, lower butting section 6c of water impeller 6 lower surface to extend internally and at a point water impeller 6 Axis at connect formed fixed part 6d；Fixed part 6d upwardly extends formation lead 6d1, and the lower end of spring 1 is set in leads On post 6d1 and be resisted against on the 3a2 of location division, in the upper end of spring 1 is arranged on locating slot 8b and be resisted against locating slot 8b Bottom surface.Shoulder block two 3a2a of movable fuse 3a is resisted against on the upper surface of spring base 8, under movable fuse 3a location division 3a2 End is positioned at the through hole of spring base 8.

The water inlet of cold water intake tunnel 2a is threaded the joint 10 with central through hole, is provided with in joint 10 Check-valves 11, is provided with sealing ring 3 12 between lateral surface and the inwall of joint 10 of check-valves 11 and forms sealing, joint 10 Outlet inwall on there is shoulder block three 10a, the inwall of the water inlet of joint 10 has shoulder block four 10b, shoulder block three 10a and supports Leaning against on the lower butting section 6c of point water impeller 6, the water side of check-valves 11 is resisted against on the lower butting section 6c of point water impeller 6, only The water inlet end returning valve 11 is resisted against on shoulder block four 10b.

During water mixing valve water flowing, hot water is passed through valve body 2 from hot water intake tunnel 2b, and cold water enters valve from cold water intake tunnel 2a Body 2；Hot water flow through hot water intake tunnel 2b after between bulge loop 2d upper surface and movable fuse 3a are crossed between 3a4 lower surface, water portion Flow at gap；Cold water arrives when dividing water impeller 6, and the cold water of a part is by dividing inner chamber and the through hole of spring base 8 of water impeller 6 In rear inflow activity fuse 3a, the cold water of another part arrives bulge loop 2d's by the aquaporin 6e that crosses of point water impeller 6 lateral surface Then lower surface is flowed into by the gap between bulge loop 2d lower surface and point water ring 8a upper surface at the central through hole of bulge loop 2d；Also Can the lower port of point water impeller 6 be closed, cold water only flows through then from bulge loop from the aquaporin 6e that crosses of point water impeller 6 lateral surface Gap between 2d lower surface and point water ring 8a upper surface flows at the central through hole of bulge loop 2d.Cold water is logical from the center of bulge loop 2d Flowing at hole, hot water and cold water region between movable fuse 3a lower surface and bulge loop 2d upper surface cross and mix, after mixing It is flowed into again in movable fuse 3a inner chamber.

When temperature is set as high temperature, rotates handwheel 1 and to suitable position and make valve rod 5a move upward, at spring 1 Effect under, spring base 8 and movable fuse 3a move upward, and 3a4 lower surface, water portion is crossed with movable fuse 3a in bulge loop 2d upper surface Between gap become big, the flow of hot water inflow activity fuse 3a inner chamber increases；Simultaneously bulge loop 2d lower surface with on point water ring 8a Gap between end face diminishes, and the flow of cold water inflow activity fuse 3a inner chamber reduces, and the temperature of mixing water increases.Temperature is set When being set to low temperature, rotating handwheel 1 and to suitable position and make valve rod 5a move downward, spring base 8 and movable fuse 3a transport downwards Dynamic, the gap that bulge loop 2d upper surface and movable fuse 3a cross between 3a4 lower surface, water portion diminishes, in hot water inflow activity fuse 3a The flow in chamber reduces；Gap between bulge loop 2d lower surface and point water ring 8a upper surface becomes big simultaneously, cold water inflow activity fuse The flow of 3a inner chamber increases, and the temperature of mixing water reduces.

When the water temperature of mixing is higher than setting value, temperature-sensitive element 3b extends, so that the lower end of movable fuse 3a is to moving down Dynamic so that the gap that bulge loop 2d upper surface and movable fuse 3a cross between 3a4 lower surface, water portion diminishes, hot water inflow activity fuse The flow of 3a inner chamber reduces, and the gap between bulge loop 2d lower surface and point water ring 8a upper surface becomes big simultaneously, cold water inflow activity The flow of fuse 3a inner chamber increases, and the temperature of mixing water is reduced to setting value automatically.When the water temperature of mixing is less than setting value, heat Quick element 3b shortens, so that the lower end of movable fuse 3a moves up so that water is crossed with movable fuse 3a in bulge loop 2d upper surface Gap between 3a4 lower surface, portion becomes big, and the flow of hot water inflow activity fuse 3a inner chamber increases, simultaneously bulge loop 2d lower surface with Dividing the gap between water ring 8a upper surface to diminish, the flow of cold water inflow activity fuse 3a inner chamber reduces, and the temperature of mixing water is certainly Move and be increased to setting value.By being automatically adjusted of spool 3 so that from the water temperature holding setting of the water that warm water exhalant canal 2c flows out Value, facilitates user directly to use.Because the temperature-sensitive end of temperature-sensitive element 3b is fixed in the inner chamber of movable fuse 3a, it is therefore prevented that heat The temperature-sensitive end direct contact heat water of quick element 3b or directly contact cold water, makes temperature-sensitive element 3b temperature-sensitive end preferably to contact To mixed warm water, so that temperature-sensitive element 3b telescopic end makes accurate reaction, improve the lower water temperature of water mixing valve Precision.

Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (8)

1. a water mixing valve, including valve body (2) and the spool (3) that is arranged in valve body (2), described valve body (2) upper end is fixing even Being connected to bonnet (4), described bonnet (4) is upper the most threaded has valve rod assembly (5), and described valve body (2) has be interconnected cold Water intake tunnel (2a), hot water intake tunnel (2b) and warm water exhalant canal (2c)；Described spool (3) includes movable fuse (3a) With temperature-sensitive element (3b), between lateral wall and the inwall of valve body (2) of described movable fuse (3a) upper end, it is provided with sealing ring one (3c) and form sealing；It is characterized in that, the upper port of described movable fuse (3a) connects with warm water exhalant canal (2c), described In the lower end of movable fuse (3a) is vertically installed in hot water intake tunnel (2b) and the lower port of described movable fuse (3a) is the most right Cold water intake tunnel (2a), at cold water intake tunnel (2a) and hot water intake tunnel (2b) on the inwall of described valve body (2) Intersection has the annular convex ring (2d) of protrusion, and the lower surface of described movable fuse (3a) has and the upper surface phase of bulge loop (2d) Just to annular cross water portion (3a4)；The temperature-sensitive end of described temperature-sensitive element (3b) is fixed in the inner chamber of movable fuse (3a), described The telescopic end of temperature-sensitive element (3b) passes the upper end of movable fuse (3a) and is resisted against on valve rod assembly (5)；Described cold water is intake Be fixedly connected with tubular point of water impeller (6) in passage (2a), the lower end of described point of water impeller (6) and movable fuse (3a) it Between connect have spring one (7).

Water mixing valve the most according to claim 1, it is characterised in that on the inwall of described movable fuse (3a), there is a plurality of ring The fixed strip (3a1) of shape equidistant arrangement, the lateral surface of described temperature-sensitive element (3b) temperature-sensitive end supports with the medial surface of fixed strip (3a1) Leaning on, the lower end of a plurality of described fixed strip (3a1) is obliquely inwardly extending and connects at the axis of movable fuse (3a) thus is formed Location division (3a2), the lower surface of described location division (3a2) protrusion activity fuse (3a), the lower surface of described movable fuse (3a) On there is downwardly projecting annular baffle ring (3a3), straight less than bulge loop (2d) medial surface of the diameter of described baffle ring (3a3) lateral surface Footpath.

Water mixing valve the most according to claim 1, it is characterised in that described valve rod assembly (5) includes with bonnet (4) screw thread even Valve rod (5a), spring two (5b) and the plug (5c) connect, the upper end of described valve rod (5a) is fixedly connected with handwheel (1), described valve The lower surface of bar (5a) caves inward and forms blind hole (5a1), and the lower end outside face of described plug (5c) has the annular of protrusion Shoulder block one (5c1), hole slot (5c2), described plug (5c) and bullet are installed in formation that the lower surface of described plug (5c) caves inward Spring two (5b) is arranged in blind hole (5a1), and the upper end of described spring two (5b) is resisted against on the bottom surface of blind hole (5a1), described bullet The lower end of spring two (5b) is set in plug (5c) and above and is resisted against on shoulder block one (5c1), the telescopic end of described temperature-sensitive element (3b) It extend in hole slot (5c2) is installed and be resisted against on the bottom surface installing hole slot (5c2).

Water mixing valve the most according to claim 2, it is characterised in that be provided with in circular in described point of water impeller (6) Spring base (8), is provided with sealing ring two (9) and is formed close between lateral surface and point water impeller (6) inwall of described spring base (8) Envelope；There is on the lateral surface of described point of water impeller (6) multiple splitter vanes (6a) of the circular array of protrusion, described point of waterleaf The upper end of sheet (6a) upwardly extends and forms the upper butting section (6b) protruding point water impeller (6) upper surface, described upper butting section (6b) Upper end be resisted against on the lower surface of bulge loop (2d)；The lower end of described splitter vane (6a) is downwardly extending protrusion point water impeller (6) the lower butting section (6c) of lower surface, described lower butting section (6c) extends internally and connects shape at the axis of point water impeller (6) Become fixed part (6d)；The lower end of described spring one (7) is resisted against on fixed part (6d), and the upper end of described spring one (7) is resisted against On the lower end of spring base (8), described spring base (8) upper surface has the annular of protrusion and divides water ring (8a), described point of water ring (8a) Face the lower surface of bulge loop (2d)；Between adjacent two described splitter vanes (6a), there is aquaporin (6e), described activity The location division (3a2) of fuse (3a) is resisted against on the upper surface of spring base (8).

Water mixing valve the most according to claim 4, it is characterised in that the fixed part (6d) of described point of water impeller (6) upwards prolongs Stretching formation lead (6d1), the lower end of described spring one (7) is set on lead (6d1), the lower end of described spring base (8) Form the locating slot (8b) of annular towards upper depression, the upper end of described spring one (7) be arranged in locating slot (8b) and against Bottom surface at locating slot (8b).

Water mixing valve the most according to claim 4, it is characterised in that outside the location division (3a2) of described movable fuse (3a) Having shoulder block two (3a2a) on side, described shoulder block two (3a2a) is resisted against on the upper surface of spring base (8), described location division (3a2) lower end is positioned at the through hole of spring base (8).

7. according to the water mixing valve described in claim 4 or 5 or 6, it is characterised in that the water inlet of described cold water intake tunnel (2a) Locate the threaded joint (10) having and there is central through hole, check-valves (11), described check-valves are installed in described joint (10) (11) it is provided with sealing ring three (12) between lateral surface and the inwall of joint (10) and forms sealing, going out of described joint (10) There is on the inwall at the mouth of a river shoulder block three (10a), the inwall of the water inlet of described joint (10) has shoulder block four (10b), described Shoulder block three (10a) is resisted against on the lower butting section (6c) of a point water impeller (6), and the water side of described check-valves (11) is resisted against a point water On the lower butting section (6c) of impeller (6), the water inlet end of described check-valves (11) is resisted against on shoulder block four (10b).

Water mixing valve the most according to claim 7, it is characterised in that the lower port of described point of water impeller (6) is closed.