Water mixing valve commonly used with thermostatic valve

Abstract

The utility model provides a water mixing valve commonly used with a thermostatic valve, which relates to the technical field of sanitary products, and comprises a shell, a temperature adjusting block, a transmission piece and a valve rod, the side wall of the shell is provided with a cold water inlet and a hot water inlet, the bottom of the shell is provided with a water outlet channel, the temperature adjusting block is sleeved in the shell and is connected with the transmission piece, and the valve rod is connected with the transmission piece. Wherein the valve rod is in threaded connection with the transmission part, the transmission part drives the temperature adjusting block to move in the axial direction by rotating the valve rod, and therefore the water passing area of the cold water inlet and the water passing area of the hot water inlet are adjusted. The problems that an existing thermostatic valve and an existing water mixing valve are not universal in size, and cost is wasted are solved.

Description

Technical Field

[0001] This utility model relates to the field of bathroom product technology, and more specifically, to a mixing valve that is compatible with thermostatic valves. Background Technology

[0002] Existing mixing valves typically consist of a valve stem, a valve body, and a moving plate and a stationary plate housed within the valve body. The moving plate has a water passage groove communicating with the outlet, while the stationary plate has cold and hot water inlets. By pushing or rotating the valve stem, the moving plate moves or rotates relative to the stationary plate, adjusting the overlap area between the water passage groove and the cold and hot water inlets, thereby regulating the outlet water temperature. Thermostatic valve cores often incorporate a temperature-sensing rod within the valve body. Based on the principle of thermal expansion and contraction, this rod changes length at different temperatures, moving a water-stopping element linked to it to the corresponding position. This automatically adjusts the cold and hot water inlet area, ensuring the outlet water temperature remains constant at the set temperature. Both types of valve cores can regulate the outlet water temperature. However, thermostatic valve cores are more expensive, and the installation dimensions and the positions of the hot and cold water inlets of the mixing valve differ from those of thermostatic valve cores. Therefore, even with the same appearance, two sets of faucet molds are needed to adapt to the two types of valve cores for different markets. Furthermore, the structures of components such as the gland for fixing the valve core and the handle connected to the valve core also differ. In conclusion, under the same appearance conditions, the two types of valve cores cannot be directly replaced, which is undoubtedly a waste of resources. Utility Model Content

[0003] This utility model discloses a mixing valve that is compatible with thermostatic valves, aiming to improve the problem of incompatibility between existing thermostatic valves and mixing valves, which leads to cost waste.

[0004] The present invention adopts the following solution:

[0005] A mixing valve, which is compatible with thermostatic valves, includes a housing, a temperature regulating block, a transmission component, and a valve stem. The housing has a cold water inlet and a hot water inlet on its side wall, and a water outlet channel at the bottom of the housing. The temperature regulating block is fitted inside the housing and connected to the transmission component. The valve stem is screwed to the transmission component. By rotating the valve stem, the transmission component drives the temperature regulating block to move axially, thereby adjusting the water flow area of ​​the cold water inlet and the hot water inlet.

[0006] As a further improvement, a water mixing block is provided inside the housing facing the water outlet channel, and multiple water passage holes are arranged in an array along the circumferential direction on the water mixing block.

[0007] As a further improvement, each of the water passage holes is arranged in a spiral shape.

[0008] As a further improvement, the mixing block is provided with a first locking part, and the housing is provided with a second locking part. The first locking part and the second locking part engage to limit the mixing block along the axial direction.

[0009] As a further improvement, the cold water inlet is located above the hot water inlet. The housing has a first limiting surface and a second limiting surface corresponding to the upper and lower surfaces of the temperature regulating block. The temperature regulating block is restricted to move between the first limiting surface and the second limiting surface. The distance between the upper surface and the first limiting surface is used to control the water flow area of ​​the cold water inlet, and the distance between the lower surface and the second limiting surface is used to control the water flow area of ​​the hot water inlet.

[0010] As a further improvement, the temperature regulating block is cylindrical and has a sealing ring on its outer sleeve, which is used to seal with the inner wall of the housing between the cold water inlet and the hot water inlet.

[0011] As a further improvement, one end of the transmission component is provided with a threaded portion for connecting with the valve stem, and the other end is provided with a second mounting hole corresponding to the first mounting hole on the temperature regulating block. The first mounting hole and the second mounting hole are locked together by fasteners.

[0012] As a further improvement, the temperature regulating block is provided with a first limiting part at one end facing the transmission member, and the transmission member is provided with a second limiting part. The first limiting part and the second limiting part engage with each other to limit the temperature regulating block in the circumferential direction.

[0013] As a further improvement, the transmission component is disposed within the housing and sleeved on the outer periphery of the valve stem, and a sealing element for sealing with the inner wall of the housing is sleeved on the outer wall of the transmission component.

[0014] As a further improvement, the valve stem is provided with a limiting groove, and a retaining ring is inserted in the limiting groove to restrict the axial movement of the valve stem.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] 1. This application sets the housing of the mixing valve to be the same size as that of a thermostatic valve, including the positions of its cold inlet, hot inlet, and outlet. This allows for direct replacement of the thermostatic valve during installation, enabling a single faucet body to be compatible with both valve cores. This reduces the number of molds required, saves costs, and facilitates manufacturing. Furthermore, the method of adjusting the temperature by rotating the valve stem is the same as with the thermostatic valve, allowing for the sharing of handles, decorative covers, and operation markings that connect to the valve core, further reducing costs. This also means that any faucet that can be fitted with a thermostatic valve can be directly fitted with the mixing valve of this application to create a lower-cost faucet, thus meeting the needs of different markets. In addition, the mixing valve of this application has a simple structure, eliminating the need for moving and stationary ceramic discs. All components can be injection molded, making the cost of the mixing valve lower than that of ceramic valve cores on the market.

[0017] 2. A mixing block is provided inside the shell directly opposite the water outlet channel. The mixing block has spirally arranged water passage holes arranged in an array along the circumference to ensure that cold water and hot water can be fully mixed, so that the outlet water temperature is uniform and stable.

[0018] 3. The transmission component and the temperature control block are designed separately and connected by screws, which simplifies the structure and facilitates mold opening.

[0019] 4. A sealing element is fitted on the outer wall of the transmission component to seal against the inner wall of the housing, preventing water from contacting the valve stem and avoiding scale buildup at the threaded connection between the transmission component and the valve stem, which would affect the valve core performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 and Figure 2 This is a structural schematic diagram of one embodiment of the present invention from different perspectives;

[0022] Figure 3 This is a cross-sectional view of one embodiment of the present invention when the upper end face abuts against the first limiting surface;

[0023] Figure 4 This is a cross-sectional view of one embodiment of the present invention when the lower end face abuts against the second limiting surface;

[0024] Figure 5 and Figure 6 This is a schematic diagram of the temperature regulating block according to one embodiment of the present invention from different viewing angles;

[0025] Figure 7 and Figure 8 This is a schematic diagram of the mixing block of one embodiment of the present invention from different perspectives;

[0026] Figure 9 This is a schematic diagram of the structure of a transmission component according to one embodiment of the present invention;

[0027] Figure 10 This is an exploded view of one embodiment of the present invention.

[0028] icon:

[0029] 1-Shell; 11-Cold water inlet; 12-Hot water inlet; 13-Water outlet; 14-Second locking part; 15-First limiting surface; 16-Second limiting surface;

[0030] 2-Temperature regulating block; 21-Upper end face; 22-Lower end face; 23-Water passage; 24-Sealing ring; 25-First mounting hole; 26-First limiting part;

[0031] 3-Transmission component; 31-Threaded part; 32-Second mounting hole; 33-Second limiting part; 34-Seal;

[0032] 4-Valve stem; 41-Limit groove; 42-Snap ring;

[0033] 5-Mixing block; 51-Water passage hole; 52-First locking part;

[0034] 6-Fasteners. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0036] Combination Figures 1 to 10This embodiment provides a mixing valve that is compatible with thermostatic valves, including a housing 1, a temperature regulating block 2, a transmission component 3, and a valve stem 4. The housing 1 has a cold water inlet 11 and a hot water inlet 12 on its side wall, and a water outlet channel 13 at the bottom of the housing 1. The temperature regulating block 2 is fitted inside the housing 1 and connected to the transmission component 3. The valve stem 4 is screwed to the transmission component 3. By rotating the valve stem 4, the transmission component 3 drives the temperature regulating block 2 to move axially, thereby adjusting the water flow area of ​​the cold water inlet 11 and the hot water inlet 12.

[0037] It should be noted that in this embodiment, the housing 1 of the mixing valve is set to be the same size as the thermostatic valve, including the positions of its cold inlet 11, hot inlet 12, and outlet channel 13. This allows for direct replacement of the thermostatic valve during installation, enabling one faucet body to be compatible with two valve cores, thus reducing the number of molds required, saving costs, and facilitating manufacturing. Furthermore, the method of adjusting the temperature by rotating the valve stem 4 is the same as that of the thermostatic valve, allowing for the sharing of handles, decorative covers, and operation markings connected to the valve core, further reducing costs. This also means that any faucet that can be fitted with a thermostatic valve can be directly fitted with the mixing valve of this embodiment to create a lower-cost faucet, thus meeting the needs of different markets. In addition, the mixing valve of this embodiment has a simple structure, eliminating the need for moving and stationary ceramic discs; all components can be injection molded, making the cost of the mixing valve lower than that of ceramic valve cores on the market.

[0038] In a preferred embodiment, a mixing block 5 is provided inside the housing 1 directly opposite the water outlet channel 13, and a plurality of water passage holes 51 are arranged in an array along the circumferential direction on the mixing block 5. For example, the water passage holes 51 are arranged in a spiral shape to ensure that cold water and hot water can be fully mixed, so that the outlet water temperature is uniform and stable.

[0039] Furthermore, the mixing block 5 is provided with a first locking part 52, and the housing 1 is provided with a second locking part 14. The first locking part 52 and the second locking part 14 engage to limit the mixing block 5 along the axial direction. The first locking part 52 and the second locking part 14 can be a snap-fit ​​structure, which is convenient for disassembly and assembly. Limiting the mixing block 5 along the axial direction can prevent the mixing block 5 from shaking up and down and causing abnormal noise, thus reducing noise.

[0040] Based on the above embodiments, in an optional embodiment of this utility model, the cold water inlet 11 is located above the hot water inlet 12. Inside the housing 1, a first limiting surface 15 and a second limiting surface 16 are provided corresponding to the upper end surface 21 and lower end surface 22 of the temperature regulating block 2. The temperature regulating block 2 is restricted to move between the first limiting surface 15 and the second limiting surface 16. The distance between the upper end surface 21 and the first limiting surface 15 is used to control the water flow area of ​​the cold water inlet 11, and the distance between the lower end surface 22 and the second limiting surface 16 is used to control the water flow area of ​​the hot water inlet 12. The temperature regulating block 2 is provided with a water flow channel 23 communicating with the water outlet channel 13, so that cold water can flow from the water flow channel 23 to the water outlet channel 13. (Refer to...) Figure 3 When the upper end face 21 abuts against the first limiting face 15, the water passage area of ​​the hot water inlet 12 is at its maximum, referring to... Figure 4 When the lower end face 22 abuts against the second limiting face 16, the water passage area of ​​the cold water inlet 11 is at its maximum.

[0041] In one embodiment, the temperature regulating block 2 is cylindrical, and a sealing ring 24 is provided on its outer sleeve. The sealing ring 24 is used to seal the inner wall of the housing 1 between the cold water inlet 11 and the hot water inlet 12 to prevent hot and cold water from mixing and causing inaccurate temperature regulation. In use, by rotating the valve stem 4 clockwise, the transmission component 3 drives the temperature regulating block 2 to move downward. At this time, the distance between the upper end face 21 and the first limiting surface 15 gradually increases, and the water passage area of ​​the cold water inlet 11 increases accordingly. The distance between the lower end face 22 and the second limiting surface 16 gradually decreases, and the water passage area of ​​the hot water inlet 12 decreases accordingly, that is, the outlet water temperature decreases. Conversely, rotating the valve stem 4 counterclockwise causes the transmission component 3 to drive the temperature regulating block 2 to move upward. At this time, the distance between the upper end face 21 and the first limiting surface 15 gradually decreases, and the water flow area of ​​the corresponding cold water inlet 11 decreases. The distance between the lower end face 22 and the second limiting surface 16 gradually increases, and the water flow area of ​​the corresponding hot water inlet 12 increases, that is, the outlet water temperature rises. This is not limited to this and is not specifically limited.

[0042] In another embodiment, one end of the transmission member 3 is provided with a threaded portion 31 for connecting with the valve stem 4, and the other end is provided with a second mounting hole 32 corresponding to the first mounting hole 25 on the temperature regulating block 2. The first mounting hole 25 and the second mounting hole 32 are locked together by a fastener 6. The fastener 6 is preferably a screw, and the two mounting holes are locked together by the screw, so that the rotating member is fastened to the temperature regulating block 2. Preferably, the end of the temperature regulating block 2 facing the transmission member 3 is provided with a first limiting portion 26, and the transmission member 3 is provided with a second limiting portion 33. The first limiting portion 26 and the second limiting portion 33 engage with each other to limit the temperature regulating block 2 circumferentially, ensuring that the temperature regulating block 2 can rotate synchronously with the transmission member 3, while preventing the screw from loosening. In this embodiment, the transmission member 3 and the temperature regulating block 2 are designed separately and connected by screws, which simplifies the structure and facilitates mold opening.

[0043] In other embodiments, the transmission component 3 is disposed inside the housing 1 and sleeved on the outer periphery of the valve stem 4. A sealing component 34 is sleeved on the outer wall of the transmission component 3 to seal against the inner wall of the housing 1, preventing water flow from contacting the valve stem 4 and avoiding the formation of scale at the screw connection between the transmission component 3 and the valve stem 4, which would affect the performance of the valve core.

[0044] It should be mentioned that in the above embodiment, the valve stem 4 is provided with a limiting groove 41, and a retaining ring 42 is inserted in the limiting groove 41 to restrict the valve stem 4 from moving axially. That is, when the valve stem 4 is rotated, the valve stem 4 will not move up and down, so that the transmission component 3 screwed to the valve stem 4 can move axially.

[0045] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A mixing valve that is compatible with thermostatic valves, characterized in that, The device includes a housing, a temperature regulating block, a transmission component, and a valve stem. The housing has a cold water inlet and a hot water inlet on its side wall, and a water outlet channel at the bottom of the housing. The temperature regulating block is fitted inside the housing and connected to the transmission component. The valve stem is screwed to the transmission component. By rotating the valve stem, the transmission component drives the temperature regulating block to move axially, thereby adjusting the water flow area of ​​the cold water inlet and the hot water inlet.

2. The mixing valve that is compatible with thermostatic valves according to claim 1, characterized in that, Inside the housing, opposite the water outlet channel, there is a water mixing block, and multiple water passage holes are arranged in an array along the circumferential direction on the water mixing block.

3. The mixing valve that is compatible with thermostatic valves according to claim 2, characterized in that, The water passages are arranged in a spiral pattern.

4. The mixing valve that is compatible with thermostatic valves according to claim 3, characterized in that, The mixing block is provided with a first locking part, and the housing is provided with a second locking part. The first locking part and the second locking part engage to limit the mixing block along the axial direction.

5. The mixing valve that is compatible with thermostatic valves according to claim 1, characterized in that, The cold water inlet is located above the hot water inlet. Inside the housing, a first limiting surface and a second limiting surface are provided corresponding to the upper and lower surfaces of the temperature regulating block. The temperature regulating block is restricted to move between the first limiting surface and the second limiting surface. The distance between the upper surface and the first limiting surface is used to control the water flow area of ​​the cold water inlet, and the distance between the lower surface and the second limiting surface is used to control the water flow area of ​​the hot water inlet.

6. The mixing valve that is compatible with thermostatic valves according to claim 1, characterized in that, The temperature regulating block is cylindrical, and a sealing ring is provided on its outer sleeve. The sealing ring is used to seal the inner wall of the housing between the cold water inlet and the hot water inlet.

7. The mixing valve that is compatible with thermostatic valves according to claim 1, characterized in that, One end of the transmission component is provided with a threaded portion for connecting with the valve stem, and the other end is provided with a second mounting hole corresponding to the first mounting hole on the temperature regulating block. The first mounting hole and the second mounting hole are locked together by fasteners.

8. The mixing valve that is compatible with thermostatic valves according to claim 1 or 7, characterized in that, The temperature regulating block is provided with a first limiting part at one end facing the transmission component, and the transmission component is provided with a second limiting part. The first limiting part and the second limiting part are engaged with each other to limit the temperature regulating block in the circumferential direction.

9. The mixing valve that is compatible with thermostatic valves according to claim 8, characterized in that, The transmission component is disposed inside the housing and sleeved on the outer periphery of the valve stem. A sealing element for sealing with the inner wall of the housing is sleeved on the outer wall of the transmission component.

10. The mixing valve that is compatible with thermostatic valves according to claim 1, characterized in that, The valve stem is provided with a limiting groove, and a retaining ring is inserted in the limiting groove to restrict the valve stem from moving axially.

Images