Mixing valve

Abstract

The application discloses a mixing valve, comprising: a balance valve assembly comprising a hot water outlet and a cold water outlet; the valve plate assembly comprises a first water limiting hole and a second water limiting hole, and the valve plate assembly rotates relative to the balance valve assembly and is used for adjusting the fluid communication amount of the first water limiting hole and the hot water outlet and the fluid communication amount of the second water limiting hole and the cold water outlet; the valve rod is connected with the valve plate assembly and used for driving the valve plate assembly to rotate; a limiting hole is formed in the temperature limiting ring, the valve rod penetrates through the limiting hole, a check block is arranged on the valve rod, and the limiting hole is used for limiting the rotating angle of the check block; the valve plate assembly is sleeved with the valve body, a gap is reserved between the valve body and the valve plate assembly, and water flow mixed through the first water limiting hole and the second water limiting hole flows out through the gap. According to the mixing valve, the rotating angle of the valve rod can be adjusted and limited through a simple structure, and then the water temperature is controlled.

Description

Technical Field

[0001] The present application relates to the field of fluid devices, and in particular to a mixing valve. Background Art

[0002] A mixing valve is a valve used to adjust the temperature of mixed water. It is widely used in electric water heaters, solar water heaters, and centralized hot water systems. It controls the mixing ratio of cold and hot water to achieve the desired outlet water temperature. Mixing valves are typically equipped with a rotation limiter, which prevents the valve stem from rotating beyond a certain angle, limiting the flow rate ratio of cold and hot water, as well as the combined temperature of the water delivered to the outlet. However, existing rotation limiters are complex in structure, typically requiring a stopper mounted on the valve stem and a stopper within the mixing valve to mate with the stopper. The shape and angle of the stopper and the stopper complement each other to adjust and limit the valve stem's rotation angle. Utility Model Content

[0003] Based on this, the problem to be solved by the present application is to provide a mixing valve that can adjust and limit the rotation angle of the valve stem through a simple structure, thereby controlling the water temperature.

[0004] The present application provides a mixing valve, comprising:

[0005] A balancing valve assembly, including a hot water outlet and a cold water outlet;

[0006] a valve plate assembly, comprising a first water limiting hole and a second water limiting hole, the valve plate assembly being rotatable relative to the balancing valve assembly to adjust the fluid connectivity between the first water limiting hole and the hot water outlet, and the fluid connectivity between the second water limiting hole and the cold water outlet, thereby adjusting the water temperature;

[0007] a valve stem connected to the valve plate assembly and used to drive the valve plate assembly to rotate;

[0008] A temperature limiting ring, wherein a limiting hole is provided on the temperature limiting ring, the valve stem is arranged through the limiting hole, a stopper is provided on the valve stem, and the limiting hole is used to limit the rotation angle of the stopper, thereby limiting the maximum water temperature;

[0009] The valve body is sleeved outside the valve plate assembly, and a gap is left between the valve body and the valve plate assembly, and the water mixed by the first water limiting hole and the second water limiting hole flows out through the gap.

[0010] In one embodiment, the limiting hole includes a penetration area for passing the valve stem, and a fan-shaped area arranged outside the penetration area, the fan-shaped area can accommodate the rotation of the block, and two limiting surfaces are formed on both sides of the fan-shaped area, each of which is against the block to limit the rotation of the block.

[0011] In one embodiment, the stopper is integrally provided with the valve stem.

[0012] In one embodiment, the valve plate assembly includes a valve plate and a bracket, the valve plate is arranged at the bottom of the bracket, the first water limiting hole and the second water limiting hole are opened on the valve plate, the bottom of the bracket is provided with a through hole corresponding to the first water limiting hole and the second water limiting hole, and the bracket is also provided with a water outlet to be connected with the two through holes for mixing water.

[0013] In one embodiment, the bracket includes a base and a accommodating portion that are connected to each other. The peripheral side of the base is open to form the water outlet. A plurality of partitions are arranged in the base radiating from the center to the outside to form a partition cavity. The first water limiting hole and the second water limiting hole are located in two of the partition cavities.

[0014] In one embodiment, the balancing valve assembly includes a shell, the shell includes a first end and a second end, the first end is provided with a hot water inlet and a cold water inlet, the second end is provided with two water outlet pipes to form the hot water outlet and the cold water outlet respectively, and two fluid channels are also provided in the shell for connecting the hot water inlet and the hot water outlet, and connecting the cold water inlet and the cold water outlet, and a rubber pad is elastically inserted in each of the water outlet pipes, and the rubber pad has an opening to be suitable for resisting against the valve plate assembly, or being connected with the first water limiting hole and the second water limiting hole for water outlet.

[0015] In one embodiment, the valve body is sleeved outside the balancing valve assembly and the bracket, the valve body includes an open end and a connecting end, the first end of the balancing valve assembly is exposed through the open end, the valve stem is set through the connecting end, the balancing valve assembly is provided with at least one clip, and the valve body is correspondingly provided with at least one hole to clamp and accommodate the balancing valve assembly, a flange is provided on the base of the bracket, and an arc-shaped clamping groove is provided on the inner side wall of the valve body to accommodate the rotation of the flange.

[0016] In one embodiment, a gap is left between the valve body and the peripheral side of the bracket base, so that the water flow from the water outlet passes through the gap and then flows out from the open end of the valve body.

[0017] In one embodiment, the diameter of the connecting end is smaller than the diameter of the opening end to form a connecting portion at the connecting end, and the connecting portion is snugly sleeved outside the accommodating portion to block the water flow from the outlet from passing between the accommodating portion and the connecting portion.

[0018] In one embodiment, the temperature limiting ring is covered on the connecting part, and the temperature limiting ring and the connecting part are detachable, and are used to separate the temperature limiting ring from the connecting part, rotate and adjust the initial position of the block, and then cover the connecting part.

[0019] Based on the above description, the valve plate assembly in the present application can rotate under the drive of the valve stem, so that the first water limiting hole and the second water limiting hole can be selectively connected with the hot water inlet and the cold water inlet respectively, and when the valve stem rotates counterclockwise, the first water limiting hole and the hot water outlet gradually rotate from a closed state to a maximum fluid connection state, while the second water limiting hole and the cold water outlet gradually rotate from a maximum fluid connection state to a closed state. When the valve stem rotates clockwise, the opposite is true, so that rotating the valve stem can adjust the ratio of hot and cold water and adjust the water temperature. The present application opens a limiting hole on the original temperature limiting ring and sets a block on the valve stem. The limiting hole is used to limit the maximum rotation angle of the valve plate, thereby adjusting the water temperature and limiting the maximum water temperature. The structure in the present application is simple and easy to produce and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural diagrams of the mixing valve provided in the embodiment of the present application;

[0021] Figure 2 This is one of the exploded structural diagrams of the mixing valve provided in an embodiment of the present application;

[0022] Figure 3 The second schematic diagram of the explosion structure of the mixing valve provided in the embodiment of the present application;

[0023] Figure 4 The second structural diagram of the mixing valve provided in the embodiment of the present application;

[0024] Figure 5 A schematic structural diagram of a valve plate assembly provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of the valve body provided in an embodiment of the present application;

[0026] Figure 7 A schematic structural diagram of a balancing valve assembly provided in an embodiment of the present application;

[0027] Figure 8 This is a schematic cross-sectional structural diagram of a mixing valve provided in an embodiment of the present application.

[0028] Figure 1: 1-Balancing valve assembly; 2-Valve plate assembly; 3-Temperature limiting ring; 4-Valve stem; 5-Valve body; 6-Gap; 12-Hot water outlet; 13-Cold water outlet; 221-First water limiting hole; 222-Second water limiting hole; 31-Limiting hole; 41-Block; 311-Fan-shaped area; 312-Through area; 21-Bracket; 22-Valve plate; 2114-Bottom of bracket; 2111-Through hole; 2113-Water outlet; 211-Base; 212-Accommodating portion; 2115-Surrounding side of base; 2116-Partition Plate; 2118-partition chamber; 11-shell; 17-first end; 18-second end; 14-hot water inlet; 15-cold water inlet; 19-outlet pipe; 110-rubber pad; 1101-opening; 111-spring; 51-opening end; 52-connecting end; 16-clip; 53-hole; 2117-flange; 56-clip groove; 58-inner side wall of valve body; 57-limiting block; 54-connecting part; 52-external spline; 42-internal spline; 112-fluid channel; 223-grip; 2112-accommodation groove. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] Throughout this specification, reference to the terms "embodiment," "one embodiment," and "an implementation" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or implementation are included in at least one embodiment or implementation of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

[0033] The present application will be described in detail below with reference to the accompanying drawings.

[0034] In order to solve the above technical problems, combined Figure 1-Figure 4 As shown, an embodiment of the present application provides a mixing valve, comprising:

[0035] The balancing valve assembly 1 includes a hot water outlet 12 and a cold water outlet 13;

[0036] The valve plate assembly 2 includes a first water-limiting hole 221 and a second water-limiting hole 222. The valve plate assembly 2 rotates relative to the balancing valve assembly 1 to adjust the fluid communication between the first water-limiting hole 221 and the hot water outlet 12, and the fluid communication between the second water-limiting hole 222 and the cold water outlet 13, thereby adjusting the water temperature.

[0037] The valve stem 4 is connected to the valve plate assembly 2 and is used to drive the valve plate assembly 2 to rotate;

[0038] A temperature limiting ring 3 is provided with a limiting hole 31, the valve stem 4 is passed through the limiting hole 31, a stopper 41 is provided on the valve stem 4, and the limiting hole 31 is used to limit the rotation angle of the stopper 41, thereby limiting the maximum water temperature;

[0039] The valve body 5 is sleeved outside the valve plate assembly 2 , and a gap 6 is left between the valve body 5 and the valve plate assembly 2 . The water mixed by the first water limiting hole 221 and the second water limiting hole 222 flows out through the gap 6 .

[0040] It should be noted that the valve plate assembly 2 can be rotated under the drive of the valve stem 4, so that the first water limiting hole 221 and the second water limiting hole 222 can be selectively connected with the hot water inlet 14 and the cold water inlet 15 respectively, and when the valve stem 4 rotates counterclockwise, the first water limiting hole 221 and the hot water outlet 12 gradually rotate from a closed state to a maximum fluid connection state, while the second water limiting hole 222 and the cold water outlet 13 gradually rotate from a maximum fluid connection state to a closed state. When the valve stem 4 rotates clockwise, the opposite is true, so that rotating the valve stem 4 can adjust the ratio of hot and cold water and adjust the water temperature. This application opens a limiting hole 31 on the original temperature limiting ring 3, and cooperates with a stop block 41 to be set on the valve stem 4. The limiting hole 31 is used to limit the maximum rotation angle of the valve plate, so that the water temperature can be adjusted and the maximum water temperature can be limited. The structure in this application is simple and easy to produce and assemble.

[0041] In one embodiment of the present application, Figure 2 and Figure 4 As shown, the limiting hole 31 includes a penetration area 312 for passing the valve stem 4, and a fan-shaped area 311 arranged outside the penetration area 312, and the fan-shaped area 311 can accommodate the stop block 41 for rotation. Two sides 313 of the fan-shaped area 311 respectively form two limiting surfaces 314, and each limiting surface 314 is against the stop block 41 to limit the rotation of the stop block 41.

[0042] It should be noted that the limiting hole 31 is opened on the top surface of the temperature limiting ring 3, the penetration area 312 is set as a circle with the axis of the valve stem 4 as the center, for passing the valve stem 4, and the fan-shaped area 311 is set on one side of the penetration area 312. Optionally, the fan-shaped area 311 is connected to the penetration area 312. The radius of the fan-shaped area 311 is greater than the distance between the outermost side of the stopper 41 and the axis of the valve stem 4, so that the stopper 41 can be rotated within the fan-shaped area 311. The radius of the penetration area 312 is less than the distance between the outermost side of the stopper 41 and the axis of the valve stem 4, so that two limiting surfaces 314 can be formed at the connection with the fan-shaped area 311 to limit the rotation of the valve stem 4. Preferably, the stopper 41 is set at a right angle to the valve stem 4, so that the stopper 41 is smaller in size. When the stop block 41 is arranged in contact with one of the limiting surfaces 314 and can rotate counterclockwise within the fan-shaped area 311, the first water limiting hole 221 and the hot water outlet 12 are rotated from a closed state to a maximum fluid connection state, and the second water limiting hole 222 and the cold water outlet 13 are rotated from a maximum fluid connection state to a closed state; when the stop block 41 is arranged in contact with another limiting surface 314 and can rotate clockwise within the fan-shaped area 311, the first water limiting hole 221 and the hot water outlet 12 are rotated from a maximum fluid connection state to a closed state, and the second water limiting hole 222 and the cold water outlet 13 are rotated from a closed state to a maximum fluid connection state.

[0043] In one embodiment of the present application, Figure 4 As shown, the stopper 41 is integrally provided with the valve stem 4 .

[0044] It should be noted that, preferably, the stop block 41 is a protrusion 42 integrally provided with the valve stem 4, that is, the protrusion is formed on the valve stem 4 and extends in a direction away from the valve stem 4; in another implementation, the stop block 41 can be provided as a stop bolt 43, and the stop bolt is laterally inserted on the valve stem 4 to play a limiting role; it is understandable that the stop block 41 can also be provided as a limiting boss 43, and the limiting boss 43 is sleeved on the outside of the valve stem 4, and the limiting boss 43 is provided with a protrusion, and the protrusion extends in a direction away from the valve stem 4, so that it can also cooperate with the limiting hole 31 at an angle to play a limiting role.

[0045] In one embodiment of the present application, Figure 2 、 Figure 3 and Figure 5As shown, the valve plate assembly 2 includes a valve plate 22 and a bracket 21, the valve plate 22 is arranged at the bottom of the bracket 21, the first water limiting hole 221 and the second water limiting hole 222 are opened on the valve plate 22, and the bottom 2114 of the bracket 21 is provided with a through hole 2111 corresponding to the first water limiting hole 221 and the second water limiting hole 222, and the bracket 21 is also provided with a water outlet 2113 to communicate with the two through holes 2111 for mixing water.

[0046] It should be noted that the valve disc 22 is configured as a circular thin disc, and the first water-limiting hole 221 and the second water-limiting hole 222 are arranged in concentric annular sectors. The bottom 2114 of the bracket 21 is also provided with two through holes 2111 that are fully connected to the first water-limiting hole 221 and the second water-limiting hole 222, respectively, so that cold water and hot water can be transported to the bracket 21. The bracket 21 is provided with a water outlet 2113, and the cold water and hot water are mixed and discharged after passing through the water outlet 2113. The valve disc 22 is provided with at least one upwardly extending gripping claw 223 on the circumference, and the circumference 2115 of the base 211 is provided with at least one accommodating groove 2112 to accommodate the gripping claw 223, thereby allowing the valve disc 22 and the bracket 21 to be assembled. The separate configuration of the valve disc 22 and the bracket 21 facilitates the disassembly and replacement of accessories.

[0047] In one embodiment of the present application, Figure 5 As shown, the bracket 21 includes a base 211 and a accommodating portion 212 that are connected together. The peripheral side 2115 of the base 211 is open to form the water outlet 2113. A plurality of partition plates 2116 are arranged in the base 211 from the center to the outside to form a partition cavity 2118. The first water limiting hole 221 and the second water limiting hole 222 are located in two of the partition cavities 2118.

[0048] It should be noted that a plurality of partition chambers 2118 are provided in the base 211, and the peripheral side 2115 of the base 211 is open, and each partition chamber 2118 is provided with a water outlet 2113. Hot water and cold water flow into the two partition chambers 2118 through the first water limiting hole 221 and the second water limiting hole 222 respectively, and then flow out through the water outlet 2113 of each partition chamber 2118, thereby preventing hot water and cold water from mixing in the bracket 21 and flowing back, affecting the water output of the balancing valve assembly 1 and confusing the water temperature.

[0049] In one embodiment of the present application, Figure 7 and Figure 8As shown, the balancing valve assembly 1 includes a shell 11, and the shell 11 includes a first end 17 and a second end 18. The first end 17 is provided with a hot water inlet 14 and a cold water inlet 15, and the second end 18 is provided with two outlet pipes 19 to form the hot water outlet 12 and the cold water outlet 13 respectively. Two fluid channels 112 are also provided in the shell 11 for connecting the hot water inlet 14 and the hot water outlet 12, and connecting the cold water inlet 15 and the cold water outlet 13. A rubber pad 110 is elastically inserted in each of the outlet pipes 19, and the rubber pad 110 has an opening 1101, which is suitable for abutting against the valve plate assembly 2, or being connected to the first water limiting hole 221 and the second water limiting hole 222 for water outlet.

[0050] It should be noted that two water outlet pipes 19 are provided at the first end 17 and the second end 18 of the balancing valve assembly 1 to form a hot water inlet 14 and a cold water inlet 15 at the first end 17, and a hot water outlet 12 and a cold water outlet 13 at the second end 18. Two fluid channels 112 are separately provided in the shell 11 to separate the hot water and the cold water to prevent water mixing. A rubber pad 110 is provided in each of the two water outlet pipes 19 of the first end 17. The rubber pad 110 has an opening 1101, so that water is discharged through the opening 1101 of the rubber pad 110. The rubber pad 110 is elastically inserted in the water outlet pipe 19 by a spring 111. When the valve plate 22 rotates to the point where the opening 1101 of the rubber pad 110 is not connected to the first water limiting hole 221 or the second water limiting hole 222, the rubber pad 110 abuts against the valve plate 22 to seal and press the opening 1101 of the rubber pad 110, so that hot water or cold water does not flow; and when the valve plate 22 rotates to the point where the first water limiting hole 221 and the second water limiting hole 222 are connected to the opening 1101 of the rubber pad 110, cold water or hot water flows.

[0051] In one embodiment of the present application, Figure 2 and Figure 6 As shown, the valve body 5 is sleeved on the outside of the balancing valve assembly 1 and the bracket 21, and the valve body 5 includes an open end 51 and a connecting end 52. The first end 17 of the balancing valve assembly 1 is exposed through the open end 51, and the valve stem 4 is set through the connecting end 52. At least one buckle 16 is provided on the balancing valve assembly 1, and at least one hole 53 is correspondingly provided on the valve body 5 to clamp and accommodate the balancing valve assembly 1. A flange 2117 is provided on the base 211 of the bracket 21, and an arc-shaped clamping groove 56 is provided on the inner side wall of the valve body 5 to accommodate the rotation of the flange 2117.

[0052] It should be noted that the valve body 5 is used to connect and assemble the balancing valve assembly 1 and the valve plate assembly 2. The valve body 5 is provided with a housing cavity, in which the balancing valve assembly 1 and the valve plate assembly 2 are accommodated. The valve body 5 has an open end 51, through which the first end 17 of the balancing valve assembly 1 passes for connection to external hot and cold water pipes. Preferably, a clip 16 is provided on each side of the housing of the balancing valve assembly 1. Two corresponding holes 53 are provided on the inner sidewall of the valve body 5. Each clip 16 engages with each hole 53, thereby assembling the balancing valve assembly 1. A flange 2117 is provided on the base 211 of the bracket 21. At least two spaced-apart stoppers 57 are provided on the inner sidewall of the valve body 5, forming an arcuate snap-fitting groove 56 between the two stoppers 57. This allows the bracket 21 to rotate while being connected to the bracket 21.

[0053] In one embodiment of the present application, Figure 8 As shown, a gap 6 is left between the valve body 5 and the peripheral side of the base 211 of the bracket 21 , so that the water flow of the water outlet 2113 passes through the gap 6 and then flows out from the open end 51 of the valve body 5 .

[0054] It should be noted that the provision of the gap 6 enables cold water and hot water to mix through the water outlet 2113 and then flow through the gap 6 to the open end 51 of the valve body 5, thereby mixing and discharging the water. It is understood that a gap 6 is also left between the balancing valve assembly 1 and the valve body 5, so that the mixed water flows out through the outside of the balancing valve assembly 1.

[0055] In one embodiment of the present application, Figure 2 and 3 As shown, the diameter of the connecting end 52 is smaller than the diameter of the opening end 51 to form a connecting portion 54 at the connecting end 52, and the connecting portion 54 is fitted outside the accommodating portion 212 to block the water flow from the water outlet 2113 from passing between the accommodating portion 212 and the connecting portion 54.

[0056] It should be noted that the connecting portion 54 is fitted with the accommodating portion 212, that is, there is no gap 6 between the connecting portion 54 and the accommodating portion 212, and the top surface of the accommodating portion 212 is closed, thereby preventing the mixed water from flowing out between the accommodating portion 212 and the connecting portion 54 to prevent water leakage.

[0057] In one embodiment of the present application, Figure 2 and 3As shown, the temperature limiting ring 3 is covered on the connecting part 54, and the temperature limiting ring 3 and the connecting part 54 are detachable, and are used to separate the temperature limiting ring 3 from the connecting part 54, rotate and adjust the initial position of the stop block 41, and then cover the connecting part 54.

[0058] It should be noted that, preferably, the temperature limiting ring 3 and the connecting portion 54 are vertically guided and meshed through the external spline 52 and the internal spline 42. When the maximum water temperature needs to be adjusted, the user manually pulls the temperature limiting ring 3 upward to disengage the connecting portion 54, rotates the temperature limiting ring 3 to the required angle, and then presses it to cover the connecting portion 54. At this time, due to the adjustment of the angle of the temperature limiting ring 3, the initial angle between the fan-shaped area 311 and the block 41 changes, that is, the angle at which the block 41 can rotate counterclockwise becomes larger or smaller, thereby enabling the maximum water temperature to be regulated. Preferably, the corresponding temperature can be marked on the outer periphery of the connecting portion 54. At this time, the block 41 is rotated counterclockwise to the maximum angle to align with the marked temperature, which can assist the user in making adjustments.

[0059] It should be noted that the above-mentioned technical features can be combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the description of this application; and, for ordinary technicians in this field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A mixing valve, characterized in that: include: A balancing valve assembly (1) comprising a hot water outlet (12) and a cold water outlet (13); A valve plate assembly (2) comprising a first water limiting hole (221) and a second water limiting hole (222), wherein the valve plate assembly (2) rotates relative to the balancing valve assembly (1) to adjust the fluid communication volume between the first water limiting hole (221) and the hot water outlet (12), and the fluid communication volume between the second water limiting hole (222) and the cold water outlet (13), thereby adjusting the water temperature; A valve stem (4) is connected to the valve plate assembly (2) and is used to drive the valve plate assembly (2) to rotate; A temperature limiting ring (3), wherein a limiting hole (31) is provided on the temperature limiting ring (3), the valve stem (4) passes through the limiting hole (31), a stopper (41) is provided on the valve stem (4), and the limiting hole (31) is used to limit the rotation angle of the stopper (41), thereby limiting the maximum water temperature; The valve body (5) is sleeved outside the valve plate assembly (2), and a gap (6) is left between the valve body (5) and the valve plate assembly (2), and the water mixed through the first water limiting hole (221) and the second water limiting hole (222) flows out through the gap (6).

2. The mixing valve according to claim 1, characterized in that The limiting hole (31) includes a penetration area (312) for passing the valve stem (4), and a fan-shaped area (311) arranged outside the penetration area (312), the fan-shaped area (311) can accommodate the stopper (41) for rotation, and two sides (313) of the fan-shaped area (311) respectively form two limiting surfaces (314), each of the limiting surfaces (314) is against the stopper (41) to limit the rotation of the stopper (41).

3. The mixing valve according to claim 1, wherein The stopper (41) is integrally provided with the valve stem (4).

4. The mixing valve according to claim 1, wherein The valve plate assembly (2) comprises a valve plate (22) and a bracket (21); the valve plate (22) is arranged at the bottom (2114) of the bracket (21); the first water limiting hole (221) and the second water limiting hole (222) are opened on the valve plate (22); the bottom (2114) of the bracket (21) is provided with a through hole (2111) corresponding to the first water limiting hole (221) and the second water limiting hole (222); the bracket (21) is also provided with a water outlet (2113) to communicate with the two through holes (2111) for mixing and discharging water.

5. The mixing valve according to claim 4, characterized in that The bracket (21) comprises a base (211) and a receiving portion (212) connected thereto; a peripheral side (2115) of the base (211) is open to form the water outlet (2113); a plurality of partitions (2116) are arranged in the base (211) radiating from the center outward to form a partition cavity (2118); the first water-limiting hole (221) and the second water-limiting hole (222) are located in two of the partition cavities (2118).

6. The mixing valve according to claim 1, wherein The balancing valve assembly (1) comprises a housing (11), the housing (11) comprising a first end (17) and a second end (18), the first end (17) being provided with a hot water inlet (14) and a cold water inlet (15), the second end (18) being provided with two outlet pipes (19) to form the hot water outlet (12) and the cold water outlet (13) respectively, and the housing (11) being provided with two fluid channels (112) for transferring the hot water to the cold water outlet (13). The hot water inlet (14) and the hot water outlet (12) are connected, and the cold water inlet (15) and the cold water outlet (13) are connected. A rubber pad (110) is elastically inserted into each of the outlet pipes (19). The rubber pad (110) has an opening (1101) suitable for abutting against the valve plate assembly (2) or being connected to the first water limiting hole (221) and the second water limiting hole (222) for water outlet.

7. The mixing valve according to claim 4, characterized in that The valve body (5) is sleeved on the outside of the balancing valve assembly (1) and the bracket (21), and the valve body (5) includes an open end (51) and a connecting end (52). The first end (17) of the balancing valve assembly (1) is exposed through the open end (51), and the valve stem (4) is arranged through the connecting end (52). At least one buckle (16) is provided on the balancing valve assembly (1), and at least one hole (53) is correspondingly provided on the valve body (5) to clamp and accommodate the balancing valve assembly (1). A flange (2117) is provided on the base (211) of the bracket (21), and an arc-shaped clamping groove (56) is provided on the inner side wall of the valve body (5) to accommodate the flange (2117) to rotate.

8. The mixing valve according to claim 7, characterized in that The gap (6) is left between the valve body (5) and the peripheral side (2115) of the base (211) of the bracket (21), so that the water flow from the water outlet (2113) passes through the gap (6) and then flows out from the open end (51) of the valve body (5).

9. The mixing valve according to claim 7, wherein: The diameter of the connecting end (52) is smaller than the diameter of the open end (51), so as to form a connecting portion (54) at the connecting end (52), and the connecting portion (54) is snugly sleeved outside the accommodating portion (212) of the bracket (21) to prevent the water flow of the water outlet (2113) from passing between the accommodating portion (212) and the connecting portion (54).

10. The mixing valve according to claim 9, characterized in that The temperature limiting ring (3) is covered on the connecting portion (54), and the temperature limiting ring (3) and the connecting portion (54) are detachably arranged, and are used to separate the temperature limiting ring (3) from the connecting portion (54), rotate and adjust the initial position of the stopper (41), and then cover the connecting portion (54).

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