Water mixing valve

Abstract

The utility model provides a water mixing valve, which comprises a hot water inlet channel and a cold water inlet channel, and further comprises a shell, a water inlet pipe and a water outlet pipe, the valve element assembly is arranged in the shell and can rotate relative to the shell to adjust the area of the hot water inlet channel and the area of the cold water inlet channel, the valve element assembly comprises a rotary knob, and the rotary knob extends out of the shell from the through hole; a dial is arranged on the peripheral side of the through hole and comprises a preset temperature mark, and when the rotary knob rotates to the preset temperature mark, the valve element assembly adjusts the hot water inlet channel and the cold water inlet channel to the preset hot water inlet area and the preset water outlet and inlet area correspondingly. The dial is provided with the preset temperature mark, when a user rotates the knob to the preset mark position according to the dial, the water mixing valve achieves the specific outlet water temperature, adjustment does not need to be conducted depending on the experience of the user, operation is convenient, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to a water purifier, in particular to a water mixing valve. Background Art

[0002] At present, water purifiers with heat exchange devices on the market use a mixing valve to adjust the water flow entering the heat exchanger to adjust the outlet temperature of the warm water. The mixing valve in the prior art is cumbersome to operate, and it is generally difficult to adjust the temperature. It often relies on the experience of service personnel and requires certain skills to adjust. Otherwise, it is difficult to adjust the temperature in one go, which is inconvenient to operate. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mixing valve to overcome the defects of the prior art that the mixing valve is complicated to operate and the temperature is generally difficult to adjust. The adjustment often relies on the experience of service personnel and requires certain skills. Otherwise, it is difficult to adjust the temperature to the desired level at one time, and the operation is inconvenient.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A water mixing valve, comprising a hot water inlet channel and a cold water inlet channel, is characterized in that it also includes:

[0006] A shell body, with through holes on its surface;

[0007] A valve core assembly is disposed in the housing and can rotate relative to the housing to adjust the areas of the hot water inlet channel and the cold water inlet channel. The valve core assembly includes a knob, and the knob extends out of the housing from the through hole;

[0008] A dial is provided on the peripheral side of the through hole, and the dial includes a preset temperature mark. When the knob is rotated to the preset temperature mark, the valve core assembly adjusts the hot water inlet channel and the cold water inlet channel to a preset hot water inlet area and a preset water outlet inlet area, respectively.

[0009] In the present solution, the above-mentioned structure is adopted, and a dial is arranged around the knob of the mixing valve, and a preset temperature mark is arranged on the dial. When the user turns the knob to the preset mark position according to the dial, the hot water inlet channel and the cold water inlet channel of the valve core assembly of the mixing valve will be adjusted to the preset hot water inlet area and the preset water outlet inlet area corresponding to the preset temperature mark position respectively, so that the cold and hot water inlet ratio of the entire mixing valve is adjusted to a specific ratio, and finally a specific water outlet temperature is achieved. There is no need to rely on the user's experience for adjustment, and the operation is convenient and the structure is simple.

[0010] Preferably, the dial includes a plurality of preset temperature marks arranged on the rotational circumference of the valve core assembly. When the knob is rotated to each of the preset temperature marks, the rotating valve core rotates to a preset angle corresponding to the preset temperature mark and adjusts the hot water inlet channel and the cold water inlet channel to corresponding different preset hot water inlet areas and preset water outlet inlet areas, respectively.

[0011] In this solution, the above structure is adopted to provide multiple preset water outlet temperature options by setting multiple preset temperature marks at different angular positions of the dial.

[0012] Preferably, the water mixing valve comprises a flow regulating valve core, and a cold water inlet and a hot water inlet are provided on the flow regulating valve core;

[0013] The valve core assembly also includes a rotating valve core, and the rotating valve core is provided with an adjustment opening;

[0014] The overlapping parts of the regulating opening, the cold water inlet and the hot water inlet form the hot water inlet channel and the cold water inlet channel;

[0015] The rotating valve core changes the area of ​​the overlapping portion between the regulating opening and the cold water inlet and the hot water inlet by rotating.

[0016] In the present scheme, the above-mentioned structure is adopted, and the hot water inlet channel and the cold water inlet channel are composed of a rotating valve core of the valve core assembly and a flow regulating valve core of the steady flow valve. The rotating valve core can rotate with the knob, while the flow regulating valve core is fixed. Through the relative movement of the two, the overlapping area of ​​the adjustment opening on the rotating valve core and the cold water inlet and the hot water inlet on the flow regulating valve core can be changed. The overlapping part of the two forms the hot water inlet channel and the cold water inlet channel. The water inlet amount is adjusted by changing the hot water inlet channel and the cold water inlet channel.

[0017] Preferably, the water mixing valve further comprises a water outlet, and the rotating valve core is further provided with a water mixing chamber which is in communication with the regulating opening, and the water mixing chamber is connected to the water outlet.

[0018] In this solution, the above structure is adopted, and a mixing chamber is provided on the rotating valve core. Hot water and cold water enter the mixing chamber through the hot water inlet channel and the cold water inlet channel respectively, and then flow out from the outlet of the mixing valve after mixing.

[0019] Preferably, the cold water inlet and the hot water inlet are arranged at intervals on the surface of the flow regulating valve core facing the rotating valve core, and the cold water inlet and the hot water inlet are distributed on the rotation path of the regulating opening so that the regulating opening can switch between the hot water state, the cold water state and the mixed water state during the rotation process;

[0020] In the hot water state, the regulating opening completely overlaps only with the hot water inlet;

[0021] In the cold water state, the regulating opening completely overlaps only with the cold water inlet;

[0022] In the mixed water state, the regulating opening partially overlaps with the hot water inlet and the cold water inlet at the same time.

[0023] In this solution, the above structure is adopted, the hot water inlet and the cold water inlet are opened on the flow regulating valve core and separated from each other, and are arranged on the rotation path of the regulating opening of the rotating valve core, so that during the rotation of the rotating valve core, the regulating opening can rotate through the hot water inlet and the cold water inlet in turn and change its overlap state with the two, and hot water and cold water can only flow into the mixing chamber from the overlapped part of the two and flow out through the water outlet. In this process, a hot water state with only hot water conducting, a cold water state with only cold water conducting, and a mixed water state with hot water and cold water conducting can be achieved to meet various needs of users.

[0024] Preferably, in the mixed water state, when the knob is rotated to each of the preset temperature marks, the proportion of the area where the adjustment opening partially overlaps with the hot water inlet and the cold water inlet is different.

[0025] In the present solution, the above-mentioned structure is adopted, and the setting positions of different preset temperature marks correspond to different rotation angles of the rotating valve core. At these specific angles, the area of ​​the cold water inlet channel and the area of ​​the hot water inlet channel are in a specific proportion, so that the water in the mixing chamber is mixed to a specific temperature.

[0026] Preferably, the valve core assembly also includes a transmission rod and a linkage rod, the transmission rod is transmission connected to the knob, the linkage rod is transmission connected to the rotating valve core, the linkage rod is sleeved on the transmission rod and transmission connected to the transmission rod, and the linkage rod is fixedly connected to the edge of the rotating valve core.

[0027] In this solution, the above structure is adopted, the knob is connected to the rotating valve core through the transmission rod and the linkage rod, the knob drives the transmission rod to rotate, the transmission rod drives the linkage rod to rotate, the linkage rod is wide enough to connect with the edge of the rotating valve core, so as to drive the rotating valve core to rotate from the edge of the rotating valve core, increase the torque and make the rotation more stable.

[0028] Preferably, the water mixing valve also includes a valve core housing, the valve core assembly and the flow regulating valve core are accommodated in the valve core housing, and a step portion is provided on the upper portion of one end of the linkage rod of the valve core assembly facing the valve core housing to form a gap between the valve core housing and the step portion.

[0029] In this solution, the above structure is adopted, and the valve core housing accommodates the valve core assembly therein, thereby improving the airtightness. At the same time, the step portion inside the valve core housing can form a gap with the valve core assembly, thereby preventing the linkage rod from forming negative pressure with the valve core housing, thereby reducing the rotation resistance.

[0030] Preferably, the flow regulating valve core is further provided with a water outlet opening separated from the cold water inlet and the hot water inlet, and the water outlet opening is connected to the water outlet;

[0031] The regulating opening of the rotating valve core is recessed inwardly to form a water mixing chamber, and the regulating opening covers the water outlet and the hot water inlet and / or the cold water inlet.

[0032] In the present solution, the above-mentioned structure is adopted, and the water outlet is also arranged on the flow regulating valve core. The mixing chamber is directly formed by the concave adjustment opening and is closed with the flow regulating valve core, so that the water flow from the hot water inlet and the cold water inlet can be introduced into the mixing chamber and mixed before flowing out from the water outlet.

[0033] Preferably, the knob has an indicating portion protruding toward the dial, and the edge of the through hole is provided with a notch corresponding to the shape of the indicating portion.

[0034] In this solution, the above structure is adopted, and the notch cooperates with the knob to facilitate the installation of the knob without causing interference and failure of installation.

[0035] The positive progressive effect of the present invention is that a dial is arranged around the knob of the water mixing valve, and a preset temperature mark is arranged on the dial. When the user rotates the knob to the preset mark position according to the dial, the hot water inlet channel and the cold water inlet channel of the valve core assembly of the water mixing valve will be adjusted to the preset hot water inlet area and the preset water outlet inlet area corresponding to the preset temperature mark position respectively, so that the cold and hot water inlet ratio of the entire water mixing valve is adjusted to a specific ratio, and finally a specific water outlet temperature is achieved, without relying on the user's experience for adjustment, and the operation is convenient and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The figure is a schematic structural diagram of a water mixing valve according to an embodiment of the utility model.

[0037] Figure 2 The figure is a schematic diagram of the internal structure of the water mixing valve according to the embodiment of the utility model.

[0038] Figure 3 It is a structural schematic diagram of the valve core assembly of an embodiment of the utility model.

[0039] Figure 4 This is a schematic diagram of the internal structure of the valve core assembly of an embodiment of the utility model.

[0040] Figure 5 It is a schematic diagram of the exploded structure of the valve core assembly according to an embodiment of the utility model.

[0041] Figure 6 It is a structural schematic diagram of the lower shell of an embodiment of the utility model.

[0042] Figure 7 It is a structural schematic diagram of a rotating valve core according to an embodiment of the utility model.

[0043] Figure 8 It is a structural schematic diagram of the flow regulating valve core of an embodiment of the utility model.

[0044] Description of reference numerals:

[0045] Knob 1

[0046] Shell 2

[0047] Water outlet 201

[0048] Through hole 21

[0049] Dial 22

[0050] Upper shell 23

[0051] Lower housing 24

[0052] Valve core assembly 3

[0053] Valve core housing 31

[0054] Rotate the valve core 32

[0055] Adjustment port 321

[0056] Mixing chamber 322

[0057] Transmission rod 33

[0058] Linkage rod 34

[0059] Valve core seat 4

[0060] Cold water inlet 401

[0061] Hot water inlet 402

[0062] Flow control valve core 41

[0063] First sealing ring 42

[0064] Seat housing 43

[0065] Second sealing ring 44

[0066] Instruction unit 11 DETAILED DESCRIPTION

[0067] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0068] like Figures 1 to 7 As shown, this embodiment provides a water mixing valve, including a hot water inlet channel and a cold water inlet channel, and further including a housing 2, and a through hole 21 is provided on the surface of the housing 2. A valve core assembly 3 is arranged in the housing 2, and can rotate relative to the housing 2 to adjust the area of ​​the hot water inlet channel and the cold water inlet channel. The valve core assembly 3 includes a knob 1, and the knob 1 extends out of the housing 2 from the through hole 21. A dial 22 is arranged on the peripheral side of the through hole 21, and the dial 22 includes a preset temperature mark. When the knob 1 is rotated to the preset temperature mark, the valve core assembly 3 adjusts the hot water inlet channel and the cold water inlet channel to the preset hot water inlet area and the preset water outlet inlet area, respectively.

[0069] In this embodiment, Figure 1 As shown, the dial 22 is arranged on the upper surface of the housing 2 around the through hole 21, and is used to indicate the rotation angle of the knob 1. The dial 22 is composed of marks arranged at different positions in the circumferential direction. The dial 22 is arranged around the knob 1 of the water mixing valve, and the dial 22 is provided with a preset temperature mark. When the user rotates the knob 1 to the preset mark position according to the dial 22, the hot water inlet channel and the cold water inlet channel of the valve core assembly 3 of the water mixing valve will be adjusted to the preset hot water inlet area and the preset water outlet inlet area corresponding to the preset temperature mark position, respectively, so that the cold and hot water inlet ratio of the entire water mixing valve is adjusted to a specific ratio, and finally a specific water outlet temperature is achieved, without relying on the user's experience for adjustment, and the operation is convenient and the structure is simple.

[0070] The housing 2 of this embodiment is composed of an upper housing 23 and a lower housing 24, which are connected by bolts, and the dial 22 is arranged on the upper housing 23. Figure 6 As shown, it is connected with the cold water inlet pipe, the hot water inlet pipe and the outlet pipe.

[0071] like Figure 1 As shown, the dial 22 includes a plurality of preset temperature marks arranged on the rotational circumference of the valve core assembly 3. When the knob 1 is rotated to each preset temperature mark, the valve core is rotated to a preset angle corresponding to the preset temperature mark and the hot water inlet channel and the cold water inlet channel are respectively adjusted to corresponding different preset hot water inlet areas and preset water outlet inlet areas.

[0072] In this embodiment, there are three preset temperature marks, namely 45, 50 and 70, and the outlet water temperatures at these positions are 45°C, 50°C and 70°C respectively. In other embodiments, the number and mark positions of the preset temperature marks can be adjusted as needed to achieve water outlets at different temperatures. By setting multiple preset temperature marks at different angles of the dial 22, a variety of preset outlet water temperature options can be provided.

[0073] like Figures 1 to 5 As shown, the water mixing valve includes a flow regulating valve core 41, on which a cold water inlet 401 and a hot water inlet 402 are provided. The valve core assembly 3 also includes a rotating valve core 32, on which an adjustment opening is provided. The overlapping portion of the adjustment opening and the cold water inlet 401 and the hot water inlet 402 forms a hot water inlet channel and a cold water inlet channel. The rotating valve core 32 changes the area of ​​the overlapping portion of the adjustment opening and the cold water inlet 401 and the hot water inlet 402 by rotating. The water mixing valve also includes a water outlet 201, and a water mixing chamber 322 communicating with the adjustment opening is also provided on the rotating valve core 32, and the water mixing chamber 322 is connected to the water outlet 201.

[0074] The valve core assembly 3 can be assembled with the flow regulating valve core 41, such as Figure 3 , 4 The flow regulating valve core 41 is installed on the valve core seat 4 and fixed. Figure 8 As shown, there are three special-shaped through holes 21, namely the cold water inlet 401, the hot water inlet 402 and the water outlet 201. The cold water inlet 401 and the hot water inlet 402 are arranged at intervals on the surface of the flow regulating valve core 41 facing the rotating valve core 32, and the cold water inlet 401 and the hot water inlet 402 are distributed on the rotation path of the regulating opening so that the regulating opening can switch between the hot water state, the cold water state and the mixed water state during the rotation process.

[0075] Rotate the valve core 32 as Figure 7 As shown, a water mixing chamber 322 is provided on the rotating valve core 32, and hot water and cold water enter the water mixing chamber 322 through the hot water inlet channel and the cold water inlet channel respectively, and then flow out from the water outlet 201 of the water mixing valve. The regulating opening of the rotating valve core 32 is recessed inward to form the water mixing chamber 322, and the regulating opening covers the water outlet passage and the hot water inlet 402 and the cold water inlet 401. And the state of the regulating opening covering the hot water inlet 402 and the cold water inlet 401 can be changed by rotating the rotating valve core 32.

[0076] The hot water inlet channel and the cold water inlet channel are composed of a rotating valve core 32 of the valve core assembly 3 and a flow regulating valve core 41 of the steady flow valve. The rotating valve core 32 can rotate with the knob 1, while the flow regulating valve core 41 is fixed. Through the relative movement of the two, the overlapping area of ​​the adjustment opening on the rotating valve core 32 and the cold water inlet 401 and the hot water inlet 402 on the flow regulating valve core 41 can be changed. The overlapping part of the two forms a hot water inlet channel and a cold water inlet channel. The water inlet amount is adjusted by changing the hot water inlet channel and the cold water inlet channel.

[0077] In the hot water state, the adjustment opening only completely overlaps with the hot water inlet 402 .

[0078] In the cold water state, the adjustment opening only completely overlaps with the cold water inlet 401 .

[0079] In the mixed water state, the regulating opening partially overlaps with the hot water inlet 402 and the cold water inlet 401 at the same time.

[0080] The hot water inlet 402 and the cold water inlet 401 are provided on the flow regulating valve core 41 and are separated from each other. They are arranged on the rotation path of the regulating opening of the rotating valve core 32, so that during the rotation of the rotating valve core 32, the regulating opening can sequentially rotate through the hot water inlet 402 and the cold water inlet 401 and change its overlap state with the two. Hot water and cold water can only flow into the mixing water chamber 322 from the overlapped part of the two and flow out through the water outlet 201. In this process, a hot water state with only hot water flowing, a cold water state with only cold water flowing, and a mixed water state with hot water and cold water flowing can be achieved to meet various needs of users.

[0081] In the mixed water state, when the knob 1 is rotated to each preset temperature mark, the proportion of the area where the adjustment opening partially overlaps with the hot water inlet 402 and the cold water inlet 401 is different.

[0082] The setting positions of different preset temperature marks correspond to different rotation angles of the rotating valve core 32. At these specific angles, the area of ​​the cold water inlet channel and the area of ​​the hot water inlet channel are in a specific ratio so that the water in the mixing chamber 322 is mixed to a specific temperature.

[0083] like Figure 2 , Figure 4 and Figure 5 As shown, the valve core assembly 3 also includes a transmission rod 33 and a linkage rod 34. The transmission rod 33 is transmission-connected to the knob 1, and the linkage rod 34 is transmission-connected to the rotating valve core 32. The linkage rod 34 is sleeved on the transmission rod 33 and transmission-connected to the transmission rod 33. The linkage rod 34 is fixedly connected to the edge of the rotating valve core 32.

[0084] In this embodiment, the bottom of the transmission rod 33 is a hexahedron, and the top is a boss, and the boss has a notch for linkage with the knob 1. The linkage rod 34 is sleeve-shaped, and there is a through hole 21 inside the rod, which can be connected to the transmission rod 33. There is a groove inside the linkage rod 34, and the groove just matches the hexahedron at the bottom of the transmission rod 33. In this way, as long as the transmission rod 33 rotates, the linkage rod 34 can be driven to rotate. There are three bosses at the bottom of the linkage rod 34, and the three bosses can be matched with the grooves of the rotating valve core 32, that is, when the linkage rod 34 rotates, it can drive the rotating valve core 32 to rotate along the axis.

[0085] The knob 1 is connected to the rotating valve core 32 through the transmission rod 33 and the linkage rod 34. The knob 1 drives the transmission rod 33 to rotate, and the transmission rod 33 drives the linkage rod 34 to rotate. The linkage rod 34 is wide enough to connect with the edge of the rotating valve core 32, thereby driving the rotating valve core 32 to rotate from the edge of the rotating valve core 32. The torque is increased and the rotation is more stable.

[0086] like Figure 2 , Figure 3 As shown, the water mixing valve further includes a valve core housing 31, the valve core assembly 3 and the flow regulating valve core 41 are accommodated in the valve core housing 31, and a step portion is provided on the upper part of one end of the linkage rod 34 of the valve core assembly 3 facing the valve core housing 31 so as to form a gap between the valve core housing 31 and the step portion. The step portion inside the valve core housing 31 can form a gap with the valve core assembly 3, which can prevent the linkage rod 34 from forming a negative pressure with the valve core housing 31, thereby reducing the rotation resistance.

[0087] In this embodiment, the valve core housing 31 can fix the linkage rod 34, the transmission rod 33, the rotating valve core 32, the flow regulating valve core 41, the first sealing ring 42, the second sealing ring 44, etc. in the housing 2. The first sealing ring 42 is arranged between the valve core seat 4 and the flow regulating valve core 41, and the second sealing ring 44 is arranged between the flow regulating valve core 41 and the rotating valve core 32. The valve core housing 31 has two bosses of different sizes at the bottom, which are used to cooperate with the grooves on the edge of the seat shell 43 of the valve core seat 4 to limit and fix. A square through hole 21 is arranged above the boss, which is used to cooperate with the protrusion of the seat shell 43 of the valve core seat 4 to prevent the valve core assembly 3 from falling. The valve core housing 31 accommodates the valve core assembly 3 therein to improve the airtightness.

[0088] like Figure 8As shown, there are three through holes 21 of different sizes and uneven distribution on the side of the flow regulating valve core 41. The different sizes are mainly to prevent mistakes and prevent wrong installation, and the uneven distribution is mainly to prevent it from being installed upside down. There is also a water outlet separated from the cold water inlet 401 and the hot water inlet 402, and the water outlet is connected to the water outlet 201. The water outlet is also provided on the flow regulating valve core 41, and the mixing chamber 322 is directly formed by the concave of the regulating opening, which is closed with the flow regulating valve core 41, so that the water flow from the hot water inlet 402 and the cold water inlet 401 can be introduced into the mixing chamber 322 for mixing and then flow out from the water outlet.

[0089] like Figure 1 As shown, the knob 1 has an indicating portion 11 protruding toward the dial 22, and the edge of the through hole 21 is provided with a notch corresponding to the shape of the indicating portion 11. The notch cooperates with the knob 1 to facilitate the installation of the knob 1 without causing interference and failure to install.

[0090] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A water mixing valve, comprising a hot water inlet channel and a cold water inlet channel, characterized in that: It also includes: A shell body, with through holes on its surface; A valve core assembly is disposed in the housing and can rotate relative to the housing to adjust the areas of the hot water inlet channel and the cold water inlet channel. The valve core assembly includes a knob, and the knob extends out of the housing from the through hole; A dial is provided on the peripheral side of the through hole, and the dial includes a preset temperature mark. When the knob is rotated to the preset temperature mark, the valve core assembly adjusts the hot water inlet channel and the cold water inlet channel to a preset hot water inlet area and a preset water outlet inlet area, respectively.

2. The water mixing valve according to claim 1, characterized in that: The dial includes a plurality of preset temperature marks arranged on the rotational circumference of the valve core assembly. When the knob is rotated to each of the preset temperature marks, the knob is rotated to a preset angle corresponding to the preset temperature mark and adjusts the hot water inlet channel and the cold water inlet channel to corresponding different preset hot water inlet areas and preset water outlet inlet areas, respectively.

3. The water mixing valve according to claim 2, characterized in that: The water mixing valve comprises a flow regulating valve core, and a cold water inlet and a hot water inlet are provided on the flow regulating valve core; The valve core assembly also includes a rotating valve core, and the rotating valve core is provided with an adjustment opening; The overlapping parts of the regulating opening, the cold water inlet and the hot water inlet form the hot water inlet channel and the cold water inlet channel; The rotating valve core changes the area of ​​the overlapping portion between the regulating opening and the cold water inlet and the hot water inlet by rotating.

4. The water mixing valve according to claim 3, characterized in that: The water mixing valve also includes a water outlet, and the rotating valve core is also provided with a water mixing chamber which is in communication with the regulating opening, and the water mixing chamber is connected to the water outlet.

5. The water mixing valve according to claim 3, characterized in that: The cold water inlet and the hot water inlet are arranged at intervals on the surface of the flow regulating valve core facing the rotating valve core, and the cold water inlet and the hot water inlet are distributed on the rotation path of the regulating opening so that the regulating opening can switch between the hot water state, the cold water state and the mixed water state during the rotation process; In the hot water state, the regulating opening completely overlaps only with the hot water inlet; In the cold water state, the regulating opening completely overlaps only with the cold water inlet; In the mixed water state, the regulating opening partially overlaps with the hot water inlet and the cold water inlet at the same time.

6. The water mixing valve according to claim 5, characterized in that: In the water mixing state, when the knob is rotated to each of the preset temperature marks, the proportion of the area where the adjustment opening partially overlaps with the hot water inlet and the cold water inlet is different.

7. The water mixing valve according to claim 3, characterized in that: The valve core assembly also includes a transmission rod and a linkage rod, the transmission rod is transmission-connected to the knob, the linkage rod is transmission-connected to the rotating valve core, the linkage rod is sleeved on the transmission rod and transmission-connected to the transmission rod, and the linkage rod is fixedly connected to the edge of the rotating valve core.

8. The water mixing valve according to claim 7, characterized in that: The mixing valve also includes a valve core housing, the valve core assembly and the flow regulating valve core are accommodated in the valve core housing, and a step portion is provided on the upper portion of one end of the linkage rod of the valve core assembly facing the valve core housing to form a gap between the valve core housing and the step portion.

9. The water mixing valve according to claim 4, characterized in that: The flow regulating valve core is also provided with a water outlet opening separated from the cold water inlet and the hot water inlet, and the water outlet opening is connected to the water outlet; The regulating opening of the rotating valve core is recessed inwardly to form a water mixing chamber, and the regulating opening covers the water outlet and the hot water inlet and / or the cold water inlet.

10. The water mixing valve according to claim 1, characterized in that: The knob has an indicating portion protruding toward the dial, and the edge of the through hole is provided with a notch corresponding to the shape of the indicating portion.

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