CN111998100B - Water mixing valve - Google Patents

Abstract

The invention discloses a water mixing valve, which comprises a shell, a valve core positioned in the shell, a supporting rod, a handle, a rotating component and a shifting component, wherein the supporting rod is positioned in the shell; the handle is arranged on the shell, the handle is sleeved on the support rod, and the handle can drive the support rod to rotate around the axis; the rotating assembly is respectively connected with the handle and the valve core, and the valve core is driven to rotate around the axis by the rotating assembly when the handle is lifted; the translation assembly is respectively connected with the support rod and the valve core, and the handle drives the support rod to rotate around the axis of the handle so as to drive the valve core to translate along the axial direction. Through set up rotating assembly, translation subassembly simultaneously in mixing the water valve, rotating assembly is direct to be connected with the handle, and translation subassembly is connected with the handle through the bracing piece, can realize simultaneously the rotation control and the axial displacement control of case through the handle, makes this mixing the water valve applicable in the regulation mode in multiple water route.

Description

Water mixing valve

Technical Field

The invention relates to a water mixing valve.

Background

The water mixing valve is a valve which mixes cold water and hot water in a valve body and outputs water with proper temperature from a water mixing port. In actual market demands, the water mixing valve is not only required to realize the function of mixing water, but also may need to integrate other functions, such as a cold and hot water circulation function. The cavity of the valve core of the water mixing valve can be adaptively designed according to different functional requirements, and in order to realize a plurality of functions, the valve core of the water mixing valve needs to simultaneously realize rotation around an axis and translation along the axis, and how to simultaneously realize rotation and translation of the valve core of the water mixing valve through a handle is a problem to be solved by the multifunctional water mixing valve.

Disclosure of Invention

The invention aims to solve the technical problem that in the prior art, the rotation and the translation of a valve core of a water mixing valve are simultaneously realized through a handle, and provides a water mixing valve and the water mixing valve comprising the same.

The invention solves the technical problems by the following technical scheme:

The invention provides a water mixing valve, which comprises a shell, a valve core, a supporting rod, a handle, a rotating assembly and a shifting assembly, wherein the valve core is positioned in the shell; the handle is arranged on the shell, the handle is sleeved on the supporting rod, and the handle can drive the supporting rod to rotate around the axis; the rotating assembly is respectively connected with the handle and the valve core, and the valve core is driven to rotate around the axis through the rotating assembly when the handle is lifted; the translation assembly is respectively connected with the support rod and the valve core, and the handle drives the support rod to rotate around the axis of the support rod so as to drive the valve core to translate along the axial direction.

In this technical scheme, through set up rotating assembly, translation subassembly simultaneously in mixing the water valve, rotating assembly is direct to be connected with the handle, and translation subassembly is connected with the handle through the bracing piece, can realize simultaneously the rotation control and the axial displacement control of case through the handle, makes this mixing the water valve applicable in the regulation mode of multiple water route.

Preferably, the rotating assembly comprises a mounting seat and a connecting rod, and the mounting seat is fixed on the outer peripheral surface of the valve core; one end of the connecting rod is arranged on the handle and can rotate around a first rotating shaft, the other end of the connecting rod is arranged on the mounting seat and can rotate around a second rotating shaft, and the first rotating shaft and the second rotating shaft are parallel to the axis of the valve core.

In the technical scheme, when the handle is lifted, the connecting rod moves together with the handle, and the connecting rod drives the valve core to rotate around the axis through the mounting seat.

Preferably, the handle comprises a mounting ring, the mounting ring extends along the circumferential direction of the supporting rod, and one end, close to the handle, of the connecting rod is sleeved on the mounting ring and can slide relative to the mounting ring.

In the technical scheme, when the handle rotates, the end part of the connecting rod can move on the mounting ring, and the handle can not drive the connecting rod to rotate together; and when the handle is lifted, the connecting rod can be lifted along with the mounting ring, so that the valve core can be driven to rotate.

Preferably, the mounting seat comprises a mounting groove and a mounting shaft, the mounting groove is arranged along the radial plane of the valve core, two ends of the mounting shaft are respectively arranged on two side surfaces of the mounting groove, the end part of the connecting rod stretches into the mounting groove and is sleeved on the mounting shaft, and the mounting shaft is parallel to the axis of the valve core.

In this technical scheme, the connecting rod can rotate around the axis of installation axle, and the mounting groove that sets up along the radial plane of case can restrict the removal of connecting rod, makes the connecting rod only can remove in the radial plane along the case.

Preferably, the water mixing valve comprises a first limiting plate, the first limiting plate is fixed on the shell, a first limiting groove is formed in the first limiting plate, the first limiting groove is formed in the radial plane of the valve core, the connecting rod penetrates through the first limiting groove, and the connecting rod can move in the first limiting groove.

In this technical scheme, first spacing groove sets up in the middle part of connecting rod, and first spacing groove also can restrict the removal of connecting rod, makes the connecting rod only can remove along the radial plane of case.

Preferably, the translation assembly comprises a gear and a rack, the gear is fixed at one end of the supporting rod far away from the handle, the gear and the supporting rod are coaxially arranged, and the axis of the gear is perpendicular to the axis of the valve core; the rack is arranged on the outer peripheral surface of the valve core, tooth grooves of the rack extend along the circumferential direction of the valve core, the rack is arranged along the axial direction of the valve core, and the gear is meshed with the rack.

In the technical scheme, when the handle drives the supporting rod to rotate, the supporting rod drives the gear to rotate, and the rack converts the rotation of the gear into the axial movement of the valve core.

Preferably, the water mixing valve further comprises a first limiting plate and a second limiting plate fixed on the shell, a second limiting groove is formed in the second limiting plate, the supporting rod penetrates through the second limiting groove, the supporting rod can rotate around an axis in the second limiting groove, the first limiting plate is located below the second limiting plate, and the end face of the gear is placed on the first limiting plate.

In this technical scheme, first limiting plate has restricted the axial displacement of bracing piece, and the radial displacement of bracing piece along has been restricted to the second spacing groove, makes the bracing piece can only rotate around the axis.

Preferably, the second limiting plate includes a slot inlet extending from an edge of the second limiting plate to the second limiting slot, and a width of the slot inlet is greater than a width of the support bar.

In this technical scheme, when this mixing valve installation, the bracing piece can enter into the second spacing groove from the groove entry, has made things convenient for the installation of bracing piece.

Preferably, the handle is equipped with the linkage hole towards the one end of bracing piece, the bracing piece is equipped with the linkage end towards the one end of handle, the linkage end is equipped with two mating surfaces of relative setting, the mating surface is on a parallel with the axis of rotation setting of bracing piece, the mating surface with the internal surface in linkage hole laminates mutually.

In the technical scheme, through setting up the mating surface, can drive the bracing piece and rotate when the handle rotates, and the bracing piece can keep motionless when the handle lifts up, makes the rotation of handle and lift up the action and do not interfere each other.

Preferably, the handle further comprises a rotating block and an operating rod, the rotating block is connected with the supporting rod, the rotating assembly is connected with the rotating block, and the extending direction of the operating rod is perpendicular to the axis of the valve core.

In this technical scheme, the user is when using this water mixing valve, drives the turning block through the action bars and rotates to drive the bracing piece and rotate, thereby make the case along axial displacement, can also drive the turning block through the action bars and lift, make the connecting rod drive the case and rotate around the axis.

Preferably, the water mixing valve further comprises a limiting ring, the limiting ring is fixed with the shell, an accommodating space is formed by the limiting ring and the outer surface of the shell, the end part of the supporting rod penetrates through the shell to extend into the accommodating space, and the rotating block is placed in the accommodating space and sleeved at the end part of the supporting rod.

In this technical scheme, accommodation space, when holding the turning block, still play the effect of restriction turning block's action range, make the turning block can rotate in accommodation space, and the angle that the turning block lifted receives accommodation space's restriction.

Preferably, the shell is provided with a first hot water port, a first cold water port and a first water mixing port, and the first hot water port, the first cold water port and the first water mixing port are communicated to the inner peripheral surface of the shell;

a circulation chamber and a water mixing chamber which are isolated from each other are formed in the valve core, a first water return port, a second hot water port, a second cold water port and a second water mixing port are arranged on the peripheral surface of the valve core, the first water return port and the second water return port are communicated with the circulation chamber, and the second hot water port, the second cold water port and the second water mixing port are communicated with the water mixing chamber;

The handle controls the valve core to rotate to a circulation position or a water mixing position through the rotating assembly; when the valve core is positioned at the circulating position, the first water return port is communicated with the first hot water port, and the second water return port is communicated with the first cold water port; when the valve core is positioned at the water mixing position, the second hot water port is communicated with the first hot water port, the second cold water port is communicated with the first cold water port, and the second water mixing port is communicated with the first water mixing port.

In this technical scheme, through the structural design of above-mentioned water mixing valve, with circulation function and water mixing function integration in the water mixing valve, need not set up the check valve alone in order to establish the circulation water route, the mounting means is simple, only needs a water mixing valve can realize the preheating function of "zero start" of water heater.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.

The invention has the positive progress effects that:

Above-mentioned water mixing valve through setting up rotating assembly, translation subassembly simultaneously in the water mixing valve, rotating assembly is direct to be connected with the handle, and translation subassembly is connected with the handle through the bracing piece, can realize simultaneously the rotation control and the axial displacement control of case through the handle, makes this water mixing valve applicable in the regulation mode of multiple water route.

Drawings

FIG. 1 is a schematic structural view of a water mixing valve according to the present invention.

Fig. 2 is a schematic view of the internal structure of the mixing valve shown in fig. 1.

Fig. 3 is a schematic view of the internal structure of the mixing valve shown in fig. 1.

Fig. 4 is a schematic view of the internal structure of the mixing valve shown in fig. 1.

Fig. 5 is a schematic view of the internal structure of the mixing valve shown in fig. 1.

Fig. 6 is a schematic structural view of a support rod of the mixing valve shown in fig. 1.

Fig. 7 is a schematic view of the handle of the mixing valve shown in fig. 1.

Fig. 8 is a schematic view showing an internal structure of a housing of the mixing valve shown in fig. 1.

Fig. 9 is a schematic view showing an internal structure of a housing of the mixing valve shown in fig. 1.

Fig. 10 is a schematic structural view of a valve body of the water mixing valve shown in fig. 1.

Fig. 11 is a schematic view of the internal structure of the valve body of the water mixing valve shown in fig. 1.

Fig. 12 is a schematic structural view of a check valve body of the mixing valve shown in fig. 1.

Fig. 13 is a schematic view of a circulation state of the mixing valve shown in fig. 1.

Fig. 14 is a schematic view of a water path in a circulation state of the mixing valve shown in fig. 13.

Fig. 15 is a schematic view of a water mixing state of the water mixing valve shown in fig. 1.

Fig. 16 is a schematic view of a water path of the mixing valve shown in fig. 15 in a mixed state.

Fig. 17 is a schematic view of a waterway of the mixing valve shown in fig. 1 in a cold water state.

Fig. 18 is a schematic view of a water heater circulation system employing the mixing valve shown in fig. 1.

Description of the reference numerals

Shell 1

First hot water gap 11

Inclined plane 111

First cold water gap 12

First water mixing port 13

First contact surface 14

Second contact surface 15

Valve core 2

Circulation chamber 21

Mixing chamber 22

First water return port 23

Second water return port 24

Second hot water gap 25

Second cold water gap 26

Second water mixing port 27

Support bar 3

Linkage end 31

Mating surface 32

Handle 4

Mounting ring 41

Linkage hole 42

Rotating block 43

Operating lever 44

Rotating assembly 5

Mounting seat 51

Mounting groove 511

Mounting shaft 512

Connecting rod 52

Translation assembly 6

Gear 61

Rack 62

First limiting plate 7

First limit groove 71

Second limiting plate 8

Second limit groove 81

Slot inlet 82

Limiting ring 9

Accommodation space 10

One-way valve core 20

Support 201

Spring 202

Piston 203

Gasket 30

Water heater 100

Hot water pipe 200

Cold water pipe 300

Water mixing valve 400

Middle valve 500

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

Fig. 1 to 17 show an embodiment of the water mixing valve of the present invention. The water mixing valve comprises a shell 1, a valve core 2, a supporting rod 3, a handle 4, a rotating assembly 5 and a translating assembly 6, wherein the valve core 2 is positioned in the shell 1, and the supporting rod 3 is positioned in the shell 1; the handle 4 is arranged on the shell 1, the handle 4 is sleeved on the support rod 3, and the handle 4 can drive the support rod 3 to rotate around the axis; the rotating component 5 is respectively connected with the handle 4 and the valve core 2, and the valve core 2 is driven to rotate around the axis by the rotating component 5 when the handle 4 is lifted; the translation component 6 is respectively connected with the support rod 3 and the valve core 2, and the handle 4 drives the support rod 3 to rotate around the axis of the handle 4 so as to drive the valve core 2 to translate along the axial direction.

Through set up rotation subassembly 5, translation subassembly 6 simultaneously in mixing the water valve, rotation subassembly 5 is direct to be connected with handle 4, and translation subassembly 6 is connected with handle 4 through bracing piece 3, can realize simultaneously rotation control and the axial displacement control of case 2 through a handle 4, makes this mixing the water valve applicable in the regulation mode of multiple water route.

The rotary assembly 5 comprises a mounting seat 51 and a connecting rod 52, and the mounting seat 51 is fixed on the outer peripheral surface of the valve core 2; one end of the connecting rod 52 is mounted on the handle 4 and can rotate about a first rotational axis, and the other end of the connecting rod 52 is mounted on the mounting seat 51 and can rotate about a second rotational axis, the first rotational axis and the second rotational axis being parallel to the axis of the valve element 2.

When the handle 4 is lifted, the connecting rod 52 moves together with the handle 4, and the connecting rod 52 drives the valve core 2 to rotate around the axis through the mounting seat 51. Besides the structure of the rotating assembly described in this embodiment, a connecting structure for lifting the handle to drive the valve core to rotate around the axis, which is common in the art, may be applied to the rotating assembly.

The translation assembly 6 comprises a gear 61 and a rack 62, the gear 61 is fixed at one end of the support rod 3 far away from the handle 4, the gear 61 and the support rod 3 are coaxially arranged, and the axis of the gear 61 is perpendicular to the axis of the valve core 2; the rack 62 is mounted on the outer peripheral surface of the valve spool 2, the tooth grooves of the rack 62 extend in the circumferential direction of the valve spool 2, the rack 62 is disposed in the axial direction of the valve spool 2, and the gear 61 is engaged with the rack 62.

When the handle 4 drives the supporting rod 3 to rotate, the supporting rod 3 drives the gear 61 to rotate, and the rack 62 converts the rotation of the gear 61 into axial movement of the valve core 2. Besides the structure of the rotating assembly described in this embodiment, a connecting structure for lifting the handle to drive the valve core to rotate around the axis, which is common in the art, may be applied to the rotating assembly.

As shown in fig. 5 to 7, the handle 4 includes a mounting ring 41, the mounting ring 41 extends in the circumferential direction of the support rod 3, and a connecting rod 52 is fitted over the mounting ring 41 near one end of the handle 4 and is slidable with respect to the mounting ring 41. When the handle 4 rotates, the end part of the connecting rod 52 can move on the mounting ring 41, and the handle 4 can not drive the connecting rod 52 to rotate together; and when the handle 4 is lifted, the connecting rod 52 is lifted along with the mounting ring 41, so that the valve core 2 can be driven to rotate.

As shown in fig. 5 to 7, the mounting seat 51 includes a mounting groove 511 and a mounting shaft 512, the mounting groove 511 is provided along a radial plane of the valve element 2, both ends of the mounting shaft 512 are respectively mounted on both side surfaces of the mounting groove 511, an end portion of the connecting rod 52 extends into the mounting groove 511 and is sleeved on the mounting shaft 512, and the mounting shaft 512 is provided parallel to an axis of the valve element 2. The connecting rod 52 can rotate about the axis of the mounting shaft 512, and the mounting groove 511 provided along the radial plane of the spool 2 can restrict the movement of the connecting rod 52 so that the connecting rod 52 can move only in the radial plane along the spool 2.

As shown in fig. 2 to 9, the water mixing valve comprises a first limiting plate 7, the first limiting plate 7 is fixed on the housing 1, a first limiting groove 71 is formed in the first limiting plate 7, the first limiting groove 71 is formed along the radial plane of the valve core 2, the connecting rod 52 passes through the first limiting groove 71, and the connecting rod 52 can move in the first limiting groove 71. The first limiting groove 71 is disposed in the middle of the connecting rod 52, and the first limiting groove 71 can limit the movement of the connecting rod 52, so that the connecting rod 52 can only move in a radial plane along the valve core 2.

As shown in fig. 2 to 9, the water mixing valve further comprises a second limiting plate 8 fixed on the housing 1, a second limiting groove 81 is formed in the second limiting plate 8, the supporting rod 3 passes through the second limiting groove 81, the supporting rod 3 can rotate around the axis in the second limiting groove 81, the first limiting plate 7 is located below the second limiting plate 8, and the end face of the gear 61 is placed on the first limiting plate 7. The first limiting plate 7 limits the axial displacement of the support rod 3, and the second limiting groove 81 limits the radial displacement of the support rod 3, so that the support rod 3 can only rotate around the axis.

Wherein, the second limiting plate 8 includes a slot inlet 82, the slot inlet 82 extends from the edge of the second limiting plate 8 to the second limiting slot 81, and the width of the slot inlet 82 is larger than the width of the support bar 3. When the water mixing valve is installed, the supporting rod 3 can enter the second limiting groove 81 from the groove inlet 82, and the installation of the supporting rod 3 is facilitated.

As shown in fig. 5 to 7, a linkage hole 42 is provided at one end of the handle 4 facing the support rod 3, a linkage end 31 is provided at one end of the support rod 3 facing the handle 4, the linkage end 31 is provided with two oppositely arranged mating surfaces 32, the mating surfaces 32 are arranged parallel to the rotation axis of the support rod 3, and the mating surfaces 32 are attached to the inner surface of the linkage hole 42. By providing the mating surface 32, the handle 4 can rotate while driving the support rod 3 to rotate, and the support rod 3 can remain stationary while the handle 4 is lifted, so that the rotation and lifting actions of the handle 4 do not interfere with each other.

As shown in fig. 5 to 7, the handle 4 further includes a rotating block 43 and an operating lever 44, the rotating block 43 is connected with the support rod 3, the rotating assembly 5 is connected with the rotating block 43, and the extending direction of the operating lever 44 is perpendicular to the axis of the spool 2. When the water mixing valve is used by a user, the operating rod 44 drives the rotating block 43 to rotate, so that the supporting rod 3 is driven to rotate, the valve core 2 moves axially, the operating rod 44 drives the rotating block 43 to lift, and the connecting rod 52 drives the valve core 2 to rotate around the axis.

As shown in fig. 2, the water mixing valve further comprises a limiting ring 9, the limiting ring 9 is fixed with the shell 1, an accommodating space 10 is formed between the limiting ring 9 and the outer surface of the shell 1, the end part of the supporting rod 3 penetrates through the shell 1 to extend into the accommodating space 10, and the rotating block 43 is placed in the accommodating space 10 and sleeved at the end part of the supporting rod 3. The accommodating space 10 accommodates the rotating block 43 and also plays a role of limiting the movement amplitude of the rotating block 43, so that the rotating block 43 can rotate in the accommodating space 10, and the lifting angle of the rotating block 43 is limited by the accommodating space 10.

When the mixing valve integrates the circulating waterway and the mixing waterway, the waterway design is as shown in fig. 3 to 4 and fig. 8 to 17, the shell 1 is provided with a first hot water port 11, a first cold water port 12 and a first water mixing port 13, and the first hot water port 11, the first cold water port 12 and the first water mixing port 13 are communicated to the inner peripheral surface of the shell 1; the valve core 2 is internally provided with a circulation chamber 21 and a water mixing chamber 22 which are isolated from each other, the peripheral surface of the valve core 2 is provided with a first water return port 23, a second water return port 24, a second hot water port 25, a second cold water port 26 and a second water mixing port 27, the first water return port 23 and the second water return port 24 are communicated with the circulation chamber 21, and the second hot water port 25, the second cold water port 26 and the second water mixing port 27 are communicated with the water mixing chamber 22; the handle 4 controls the valve core 2 to rotate to a circulation position or a water mixing position through the rotating assembly 5; when the valve core 2 is positioned at the circulation position, the first water return port 23 is communicated with the first hot water port 11, and the second water return port 24 is communicated with the first cold water port 12; when the valve core 2 is positioned at the water mixing position, the second hot water port 25 is communicated with the first hot water port 11, the second cold water port 26 is communicated with the first cold water port 12, and the second water mixing port 27 is communicated with the first water mixing port 13.

When the above-mentioned mixing valve is mounted on the water heater, the first hot water port 11 is communicated with hot water port of the water heater by means of hot water pipe, and the first cold water port 12 is communicated with cold water port of the water heater by means of cold water pipe.

When the handle 4 is lifted, the connecting rod 52 moves together with the handle 4, and the connecting rod 52 drives the valve core 2 to rotate around the axis, so that the valve core 2 can be switched between a circulation position and a water mixing position. Wherein the connecting rod 52 is located in the housing 1, and the inner surface of the housing 1 is provided with a first abutting surface 14 and a second abutting surface 15. As shown in fig. 13, when the connecting rod 52 moves to contact the first contact surface 14, the valve element 2 is positioned at the circulation position, and the water mixing valve is in the circulation state; as shown in fig. 15, when the connecting rod 52 moves to contact the second contact surface 15, the valve body 2 is positioned at the water mixing position, and the water mixing valve is in a water mixing state.

When the handle 4 drives the support rod 3 to rotate, the support rod 3 drives the gear 61 to rotate, and the rack 62 converts the rotation of the gear 61 into the axial movement of the valve core 2, so that the valve core 2 can move between the first limit position and the second limit position along the axial direction. When the valve core 2 is at the first limit position or the second limit position, the end surface of the valve core 2 can be abutted with the end surface of the inner cavity of the shell 1 so as to limit the further movement of the valve core 2.

As shown in fig. 13 to 14, when the handle 4 controls the valve core 2 to rotate to the circulation position through the rotating assembly 5, the first water return port 23 is communicated with the first hot water port 11, the second water return port 24 is communicated with the first cold water port 12, so that water flowing out of the hot water port of the water heater flows back into the water heater through the hot water pipe, the first hot water port 11, the first water return port 23, the circulation chamber 21, the second water return port 24, the first cold water port 12 and the cold water pipe, and then flows back into the water heater from the cold water port of the water heater. Through the circulating waterway, the preheating of water in the hot water pipe and the cold water pipe can be realized, and the effect of zero starting of the water heater is achieved.

As shown in fig. 13 and 14, the mixing valve further includes a check valve core 20, the check valve core 20 is mounted on the first hot runner 11, and a flow direction of the check valve core 20 flows into the housing 1 from an outside of the housing 1. By providing the one-way valve core 20, cold water cannot flow to the hot water port of the water heater through the first hot water port 11, and the waterway can only flow along the directions of the first hot water port 11, the first water return port 23, the circulating chamber 21, the second water return port 24 and the first cold water port 12.

One specific configuration of one-way valve cartridge 20 is shown in fig. 12. The unidirectional valve core 20 comprises a supporting frame 201, a spring 202 and a piston 203, wherein the supporting frame 201 is fixed on the inner circumferential surface of the first hot water gap 11, an inclined surface 111 matched with the piston 203 is arranged on the inner circumferential surface of the first hot water gap 11, the spring 202 is arranged between the supporting frame 201 and the piston 203, and the piston 203 faces the outside of the first hot water gap 11 relative to the supporting frame 201. When the water flows into the first hot water gap 11, the water flow applies pressure to the piston 203, so that the piston 203 compresses the spring 202 inward, and a gap through which the water flows is formed between the piston 203 and the inclined surface 111. When water flows out of the first hot water port 11 to the outside of the housing 1, the piston 203 and the inclined surface 111 form a sealing fit, so that water flow out of the first hot water port 11 to the outside of the housing 1 is avoided.

As shown in fig. 15 to 16, when the handle 4 is moved to the water mixing position by the valve core 2 controlled by the rotating assembly 5, the second hot water port 25 is communicated with the first hot water port 11, the second cold water port 26 is communicated with the first cold water port 12, and the second water mixing port 27 is communicated with the first water mixing port 13. At this time, hot water flows into the water mixing chamber 22 through the hot water pipe, the first hot water port 11 and the second hot water port 25, cold water flows into the water mixing chamber 22 through the cold water pipe, the first cold water port 12 and the second cold water port 26, the cold water and the hot water are mixed in the water mixing chamber 22 and then flow out through the second water mixing port 27 and the first water mixing port 13, and the water flowing out from the first water mixing port 13 is available for users.

Through the structural design of the water mixing valve, the circulating function and the water mixing function are integrated in the water mixing valve, a one-way valve is not required to be arranged independently for establishing a circulating waterway, the installation mode is simple, and the preheating function of zero starting of the water heater can be realized only by one water mixing valve.

As shown in fig. 13 to 17, the distance from the center of the first return port 23 to the center of the second return port 24 in the axial direction of the spool 2 is equal to the distance from the center of the first hot water port 11 to the center of the first cold water port 12 in the axial direction of the spool 2; the first water return port 23 and the second water return port 24 are arranged in a row along the direction parallel to the axial direction of the valve core 2, and the first hot water port 11 and the first cold water port 12 are arranged in a row along the direction parallel to the axial direction of the valve core 2.

When the first hot water port 11, the first cold water port 12, the first water return port 23 and the second water return port 24 are arranged at the positions, the valve core 2 can be adjusted to the circulation position only by rotating the valve core 2 around the axis, and the moving mode of the valve core 2 is simple and easy to control.

The above-described embodiments are merely examples of the arrangement of the circulation water paths on the housing 1 and the spool 2. In other embodiments, as long as the following conditions are satisfied, the included angle between the center of the first water return port 23 and the vertical line of the axis of the valve core 2, and the included angle between the center of the second water return port 24 and the vertical line of the axis of the valve core 2 are equal to the included angle between the center of the first hot water port 11 and the vertical line of the axis of the valve core 2, and the included angle between the center of the first cold water port 12 and the vertical line of the axis of the valve core 2, the purpose of rotating the valve core 2 around the axis can be achieved, and the valve core can be adjusted to the circulation position.

As shown in fig. 13 to 17, the distance from the center of the second hot runner 25 to the center of the second cold runner 26 in the axial direction of the spool 2 is equal to the distance from the center of the first hot runner 11 to the center of the first cold runner 12 in the axial direction of the spool 2; the distance from the center of the second water mixing port 27 to the center of the second cold water port 26 along the axial direction of the valve core 2 is equal to the distance from the center of the first water mixing port 13 to the center of the first cold water port 12 along the axial direction of the valve core 2; the first hot water ports 11 and the first cold water ports 12 are arranged in a row along the direction parallel to the axial direction of the valve core 2, and the second hot water ports 25 and the second cold water ports 26 are arranged in a row along the direction parallel to the axial direction of the valve core 2.

When the first hot water gap 11, the first cold water gap 12, the first water mixing gap 13, the second hot water gap 25, the second cold water gap 26 and the second water mixing gap 27 are arranged at the positions, the water mixing position can be adjusted only by rotating the valve core 2 around the axis, and the moving mode of the valve core 2 is simple and easy to control.

The above embodiment is merely an example of the arrangement of the water mixing channel on the housing 1 and the valve element 2. In other embodiments, the angle between the center of the second hot runner 25 and the perpendicular to the axis of the spool 2, the center of the second cold runner 26 and the perpendicular to the axis of the spool 2 is equal to the angle between the center of the first hot runner 11 and the perpendicular to the axis of the spool 2, the center of the first cold runner 12 and the perpendicular to the axis of the spool 2, as long as the following conditions are satisfied; the included angle between the center of the second water mixing port 27 and the vertical line of the axis of the valve core 2, and the included angle between the center of the second cold water port 26 and the vertical line of the axis of the valve core 2 are equal to the included angle between the center of the first water mixing port 13 and the vertical line of the axis of the valve core 2, and the included angle between the center of the first cold water port 12 and the vertical line of the axis of the valve core 2, so that the valve core 2 can be rotated around the axis to be adjusted to the water mixing position.

As shown in fig. 13 to 17, the length of the inner cavity of the housing 1 along the axial direction is greater than the length of the valve core 2 along the axial direction, and the handle 4 can control the valve core 2 to move to a first limit position and a second limit position along the axial direction in the housing 1 through the translation assembly 6; when the valve core 2 moves to the first limit position or the second limit position along the axial direction, the first water return port 23 and the first hot water port 11 have a section which coincides with each other along the axial direction, and the second water return port 24 and the first cold water port 12 have a section which coincides with each other along the axial direction.

Through the setting of the length of first return port 23, second return port 24, after handle 4 passes through rotation subassembly 5 control case 2 and rotates to circulation position, no matter how along axial displacement of case 2, first return port 23 is linked together with first hot mouth of a river 11 all the time, and second return port 24 is linked together with first cold mouth of a river 12 all the time, and the circulation water route can guarantee unblockly all the time.

As shown in fig. 13 to 17, when the valve core 2 moves to the first limit position in the axial direction, the second hot water gap 25 and the first hot water gap 11 do not overlap in the axial direction, the second cold water gap 26 and the first cold water gap 12 have overlapping sections in the axial direction, and the second water mixing gap 27 and the first water mixing gap 13 have overlapping sections in the axial direction; when the valve core 2 moves to the second limit position along the axial direction, the second hot water gap 25 and the first hot water gap 11 are provided with a section which is overlapped along the axial direction, the second cold water gap 26 and the first cold water gap 12 are not overlapped along the axial direction, and the second water mixing gap 27 and the first water mixing gap 13 are provided with a section which is overlapped along the axial direction.

Through the setting of the length of second hot mouth of a river 25, second cold mouth of a river 26, after handle 4 passes through rotation subassembly 5 control case 2 and rotates to the water mixing position, control case 2 along axial displacement again, can switch to cold water state and hot water state. As shown in fig. 17, when the spool 2 moves to the first limit position, the second hot water port 25 is not communicated with the first hot water port 11, the second cold water port 26 is communicated with the first cold water port 12, and the second water mixing port 27 is communicated with the first water mixing port 13, so that all the water flowing out of the first water mixing port 13 is cold water entering from the first cold water port 12. When the valve element 2 moves to the second opposite limit position, the second hot water port 25 is communicated with the first hot water port 11, the second cold water port 26 is not communicated with the first cold water port 12, and the second water mixing port 27 is communicated with the first water mixing port 13, so that all water flowing out of the first water mixing port 13 is hot water entering from the first hot water port 11.

As shown in fig. 3, the water mixing valve further includes a gasket 30, the gasket 30 being located between the inner peripheral surface of the housing 1 and the outer peripheral surface of the valve body 2, the gasket 30 being provided with openings corresponding to the first hot water port 11, the first cold water port 12, and the first water mixing port 13. The gasket 30 can fill up the gap between the inner peripheral surface of the housing 1 and the outer peripheral surface of the valve body 2, and water leakage does not occur in the other areas except the corresponding communication ports.

As shown in fig. 18, the above-described water mixing valve is used for a water heater circulation system including a water heater 100, a cold water pipe 300, a hot water pipe 200, and a water mixing valve 400, the hot water port of the water heater 100 being in communication with the first hot water port 11 of the water mixing valve 400 through the hot water pipe 200, and the cold water port of the water heater 100 being in communication with the first cold water port 12 of the water mixing valve 400 through the cold water pipe 300.

Wherein, the circulation system further comprises at least one middle valve 500, the hot water port of the middle valve 500 is communicated with the hot water pipe 200, the cold water port of the middle valve 500 is communicated with the cold water pipe 300, and the middle valve 500 is closer to the water heater 100 than the water mixing valve 400. When a plurality of water use points are provided, the above-described water mixing valve 400 is used only at the most distal water use point, and a conventional valve may be used as the middle valve 500 at the middle water use point.

When the water mixing valve 400 is applied to a water heater circulation system, a one-way valve is not required to be arranged independently for establishing a circulation waterway, the installation mode is simple, and the zero-start preheating function of the water heater can be realized by only one water mixing valve.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (12)

1. A water mixing valve comprising a housing and a valve core located in the housing, characterized in that the water mixing valve further comprises:

a support rod positioned within the housing;

The handle is arranged on the shell, is sleeved on the supporting rod and can drive the supporting rod to rotate around the axis;

The rotating assembly is respectively connected with the handle and the valve core, and the valve core is driven to rotate around the axis through the rotating assembly when the handle is lifted;

The translation assembly is respectively connected with the support rod and the valve core, and the handle drives the support rod to rotate around the axis of the support rod so as to drive the valve core to axially translate.

2. The mixing valve of claim 1, wherein the rotating assembly comprises:

The mounting seat is fixed on the outer peripheral surface of the valve core;

The connecting rod, the one end of connecting rod is installed on the handle and can rotate around first axis of rotation, the other end of connecting rod is installed on the mount pad and can rotate around the second axis of rotation, first axis of rotation, second axis of rotation are parallel to the axis of case.

3. The mixing valve of claim 2, wherein: the handle comprises a mounting ring, the mounting ring extends along the circumferential direction of the supporting rod, and one end, close to the handle, of the connecting rod is sleeved on the mounting ring and can slide relative to the mounting ring.

4. The mixing valve of claim 2, wherein: the installation seat comprises an installation groove and an installation shaft, the installation groove is arranged along the radial plane of the valve core, two ends of the installation shaft are respectively installed on two side surfaces of the installation groove, the end part of the connecting rod stretches into the installation groove and is sleeved on the installation shaft, and the installation shaft is parallel to the axis of the valve core.

5. The mixing valve of claim 2, wherein: the water mixing valve comprises a first limiting plate, the first limiting plate is fixed on the shell, a first limiting groove is formed in the first limiting plate, the first limiting groove is formed in the radial plane of the valve core, the connecting rod penetrates through the first limiting groove, and the connecting rod can move in the first limiting groove.

6. The mixing valve of claim 1, wherein the translating assembly comprises:

The gear is fixed at one end of the supporting rod far away from the handle, the gear and the supporting rod are coaxially arranged, and the axis of the gear is perpendicular to the axis of the valve core;

the rack is arranged on the outer peripheral surface of the valve core, tooth grooves of the rack extend along the circumferential direction of the valve core, the rack is arranged along the axial direction of the valve core, and the gear is meshed with the rack.

7. The mixing valve of claim 6, further comprising a first limiting plate and a second limiting plate fixed on the housing, wherein the second limiting plate is provided with a second limiting groove, the support rod passes through the second limiting groove, the support rod can rotate around an axis in the second limiting groove, the first limiting plate is positioned below the second limiting plate, and the end face of the gear is placed on the first limiting plate.

8. The mixing valve of claim 7, wherein the second limiting plate includes a slot entrance extending from an edge of the second limiting plate to the second limiting slot, the slot entrance having a width greater than a width of the support bar.

9. The mixing valve of claim 1, wherein: the handle is equipped with the linkage hole towards the one end of bracing piece, the bracing piece is equipped with the linkage end towards the one end of handle, the linkage end is equipped with two mating surfaces of relative setting, the mating surface is on a parallel with the axis of rotation setting of bracing piece, the mating surface with the internal surface in linkage hole laminates mutually.

10. The mixing valve of claim 1, wherein: the handle also comprises a rotating block and an operating rod, wherein the rotating block is connected with the supporting rod, the rotating assembly is connected with the rotating block, and the extending direction of the operating rod is perpendicular to the axis of the valve core.

11. The mixing valve of claim 10, wherein: the water mixing valve further comprises a limiting ring, the limiting ring is fixed with the shell, an accommodating space is formed by the limiting ring and the outer surface of the shell, the end part of the supporting rod penetrates through the shell to extend into the accommodating space, and the rotating block is placed in the accommodating space and sleeved at the end part of the supporting rod.

12. The mixing valve of claim 1, wherein:

The shell is provided with a first hot water port, a first cold water port and a first water mixing port, and the first hot water port, the first cold water port and the first water mixing port are communicated to the inner peripheral surface of the shell;

a circulation chamber and a water mixing chamber which are isolated from each other are formed in the valve core, a first water return port, a second hot water port, a second cold water port and a second water mixing port are arranged on the peripheral surface of the valve core, the first water return port and the second water return port are communicated with the circulation chamber, and the second hot water port, the second cold water port and the second water mixing port are communicated with the water mixing chamber;

The handle controls the valve core to rotate to a circulation position or a water mixing position through the rotating assembly; when the valve core is positioned at the circulating position, the first water return port is communicated with the first hot water port, and the second water return port is communicated with the first cold water port; when the valve core is positioned at the water mixing position, the second hot water port is communicated with the first hot water port, the second cold water port is communicated with the first cold water port, and the second water mixing port is communicated with the first water mixing port.