Mechanical adjustable constant-temperature water mixing faucet

Abstract

The utility model provides a mechanical adjustable constant-temperature water mixing faucet which comprises an outer shell, an inner cavity is formed in the outer shell, a water mixing adjusting valve capable of rotating relative to the outer shell and a temperature controller capable of sliding in the outer shell are sequentially installed in the inner cavity, and a spiral bimetallic strip is arranged in the temperature controller. The sliding temperature controller enables the water mixing adjusting valve to be connected with the outer shell in a coupling mode, the temperature controller drives the water mixing adjusting valve to rotate to adjust the water inlet proportion of the water inlet pipeline based on deformation of the bimetallic strip, the water mixing adjusting valve and the spiral bimetallic strip are assembled and disassembled in a sliding connection mode, and a physical switching mechanism of a temperature control mode and a temperature adjusting mode is formed. The water temperature can be adjusted at will according to individual requirements of users within the allowable temperature range, and the water mixing adjusting valve is driven to rotate to control the inlet and outlet proportion of cold water and hot water based on thermal expansion of the bimetallic strip.

Description

TECHNICAL FIELD

[0001] The utility model relates to faucet technical field especially relates to a mechanical adjustable constant temperature mixing faucet. BACKGROUND

[0002] The mixing faucet is a kind of faucet that can mix cold and hot water, and its main function is to adjust water temperature to meet different use requirements. The traditional cold and hot water faucet needs user to manually adjust the water inlet amount of cold and hot water to achieve appropriate water temperature, but this way is often difficult to control accurately, and is easily affected by water pressure fluctuation during use, resulting in water temperature being hot and cold, affecting the use experience.

[0003] To solve this problem, constant temperature mixing faucets have appeared on the market, and their core principle is to use temperature control devices to automatically adjust the cold and hot water ratio to keep the outlet water temperature stable. The existing constant temperature mixing faucet is mainly mechanical constant temperature mixing faucet and electric control constant temperature mixing faucet. Among them, the mechanical constant temperature mixing faucet usually uses thermal elements (such as constant temperature wax core or shape memory alloy) to sense water temperature change and automatically adjust the mixing ratio, while the electric control constant temperature mixing faucet relies on electronic sensors to detect temperature and controls electric valves through microprocessor to achieve water temperature adjustment.

[0004] The electric control constant temperature mixing faucet is generally high in cost, and the current market mechanical constant temperature mixing faucet generally locks the temperature at about 38℃, because this temperature can meet the human comfort and avoid the risk of scalding. However, this design has certain limitations, that is, users cannot freely adjust the constant temperature locking point, resulting in difficulty in meeting individual needs. INVENTION CONTENTS

[0005] To solve the problem of temperature adjustment solidification of the existing mechanical constant temperature mixing faucet, the utility model provides a mechanical adjustable constant temperature mixing faucet, comprising:

[0006] The outer shell is provided with an inner cavity, a first water inlet, a second water inlet and a water outlet in the outer shell;

[0007] The mixing valve is rotatably arranged in the outer shell, the mixing valve is provided with a first water inlet pipe, a second water inlet pipe and an outlet pipe, the first water inlet pipe and the second water inlet pipe are oppositely arranged, and the water inlet part shields the water inlet pipe, the outlet pipe is provided with a mixing switch for opening and closing the outlet pipe and rotating the mixing valve, and the front end of the mixing valve is provided with a transmission device;

[0008] The temperature controller is slidably arranged in the outer shell, and comprises a bimetallic strip temperature controller and a temperature controller shell.

[0009] Specifically, the first water inlet and the second water inlet are spaced apart by a first circumferential distance, the first water inlet pipe and the second water inlet pipe are spaced apart by a second circumferential distance, and the difference between the first circumferential distance and the second circumferential distance is not less than the circumferential width of any one of the water inlet pipes or the water inlets.

[0010] Specifically, the water mixing switch is fixedly connected with the water mixing regulating valve, a first slot is arranged in the outer shell, a lever of the water mixing switch extends out of the first slot, and the circumferential width of the first slot is wider than the width of the lever.

[0011] Specifically, a sliding rail is arranged on the outer side of the temperature controller shell, a sliding groove matched with the sliding rail is arranged on the inner wall of the outer shell in the length direction, and a sliding switch is arranged above the temperature controller shell.

[0012] Specifically, the driving device is a gear, the transmission device is an inner gear ring, and a guide slope is arranged on the assembly side of the gear and the inner gear ring.

[0013] Specifically, the driving device is a positioning pin, the transmission device is a plurality of pin holes, and a chamfer is arranged on the edge of the positioning pin and the pin hole.

[0014] Specifically, the driving device is an expansion bolt, the transmission device is an arc-shaped slot, and a tapered rubber nail feeding mechanism is arranged at the front end of the expansion bolt.

[0015] Specifically, a first through hole is arranged on the rear side of the temperature controller shell, and a second through hole is arranged in the driving device.

[0016] Specifically, a second slot is arranged in the outer shell, the sliding switch extends out of the second slot, positioning grooves are arranged on the two sides of the rear end of the second slot, spring positioning beads are arranged in the positioning grooves, and an arc-shaped positioning groove matched with the positioning grooves is arranged in the sliding switch.

[0017] Compared with the prior art, the temperature controller has the beneficial effects that:

[0018] The utility model provides a kind of mechanical adjustable constant temperature water mixing faucet, water mixing regulating valve and spiral bimetallic strip adopt sliding connection assembly and disassembly, form the physical switching mechanism of "temperature control mode" and "temperature adjustment mode", in invention allowable temperature range interval can be adjusted water temperature according to the individualized needs of user arbitrarily, and based on bimetallic strip's thermal expansion drives water mixing regulating valve rotation control cold and hot water's in-out proportion. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is assembly drawing of the utility model;

[0020] Figure 2 It is first direction explosion drawing of the utility model;

[0021] Figure 3 It is second direction explosion drawing of the utility model;

[0022] Figure 4 It is sectional view of the utility model;

[0023] Figure 5 It is the internal structure schematic view of the shell of the utility model;

[0024] Figure 6 It is the second embodiment schematic view of drive device and transmission device of the utility model;

[0025] Figure 7 It is the third embodiment schematic view of drive device and transmission device of the utility model.

[0026] Reference signs: 1, shell;11, first water inlet;12, second water inlet;13, water outlet;14, first slot;15, second slot;16, sliding groove;2, water mixing regulating valve;21, first water inlet pipe;22, second water inlet pipe;23, water outlet pipe;24, water mixing switch;241, lever;242, water mixing cavity;25, transmission device;3, temperature controller;31, temperature controller shell;311, first through hole;312, slide rail;313, sliding switch;314, mounting hole;32, bimetallic temperature controller;321, center shaft;322, bimetallic strip;323, drive device;324, second through hole. DETAILED DESCRIPTION

[0027] The embodiment of the utility model is further described in detail in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0028] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] To address the limitations of existing mechanical thermostatic mixing faucets in terms of temperature regulation, this invention provides a mechanically adjustable thermostatic mixing faucet, such as... Figures 1 to 7 As shown, the device includes an outer shell 1, within which an inner cavity is provided. A mixing valve 2, which can rotate relative to the outer shell 1, and a temperature controller 3, which can slide within the outer shell 1, are sequentially installed in the inner cavity. The mixing valve 2 and the temperature controller 3 are coaxially arranged. A spiral bimetallic strip 322 is provided within the temperature controller 3. Sliding the temperature controller 3 couples the mixing valve 2 to the outer shell 1. The temperature controller 3 drives the mixing valve 2 to rotate based on the deformation of the bimetallic strip 322, adjusting the water inlet ratio of the inlet pipe.

[0030] The outer casing 1 includes a first water inlet 11, a second water inlet 12, and a water outlet 13. The first water inlet 11 and the second water inlet 12 are disposed opposite each other on the side wall of the rear part of the outer casing 1, with the first water inlet 11 and the second water inlet 12 separated by a first circumferential distance. The water outlet 13 is disposed at the front part of the outer casing 1.

[0031] The mixing valve 2 is installed at the rear end of the outer casing 1, coaxially with the outer casing 1, and can rotate relative to the outer casing 1. The mixing valve 2 is equipped with a first inlet pipe 21, a second inlet pipe 22, and an outlet pipe 23. Liquids with a first temperature and a second temperature, such as cold water and hot water, enter the mixing valve 2 from the first inlet 11 and the second inlet 12, respectively. The first inlet pipe 21 and the second inlet pipe 22 are spaced apart by a second circumferential distance. The difference between the first circumferential distance and the second circumferential distance is not less than the circumferential width of either orifice, causing the inlet portion to partially block the flow cross-section of the inlet pipes. By rotating the inner casing, the flow cross-sectional area of ​​the first inlet pipe 21 and the second inlet pipe 22 is adjusted, changing the mixing ratio of cold water and hot water, thus achieving temperature-controlled mixing. A mixing switch 24 is provided in the water outlet pipe 23 for opening and closing the water outlet pipe 23 and rotating the mixing regulating valve 2. The mixing switch 24 is fixedly connected to the mixing regulating valve 2. A first slot 14 is provided at the upper end of the outer casing 1, and the mixing switch 24 extends out of the first slot 14. A transmission device 25 is provided at the front end of the mixing regulating valve 2.

[0032] Further, a one-way valve is arranged in the first water inlet pipe 21 and the second water inlet pipe 22 or at the water inlet and the water outlet 13.

[0033] The water mixing switch 24 is a translation type water mixing valve, which comprises a lever 241 and a water mixing cavity 242. A handle can be arranged on the lever 241. The lever 241 is pushed to make the water mixing cavity 242 move forward or backward. At the bottom of the water mixing cavity 242, the water mixing switch 24 is connected with the first water inlet pipe 21, the second water inlet pipe 22 and the water outlet pipe 23 respectively. When the lever 241 is pushed backward, the water mixing cavity 242 is communicated with the first water inlet pipe 21, the second water inlet pipe 22 and the water outlet pipe 23. When the lever 241 is pushed forward, the water mixing cavity 242 is still communicated with the water outlet pipe 23, while the first water inlet pipe 21 and the second water inlet pipe 22 are blocked. The specific structure of the water mixing switch 24 is mature prior art, which will not be described here. When the lever 241 is pushed leftward or rightward, the lever 241 drives the water mixing regulating valve 2 to rotate around the central axis, so as to adjust the flow cross section of the water inlet and the water inlet pipe, thereby achieving the purpose of adjusting the temperature. The first slot 14 has a width wider than that of the lever 241, so that the lever 241 can slide leftward or rightward in the first slot, and the leftward or rightward movement of the lever 241 is limited, thereby limiting the rotation angle of the water mixing regulating valve 2. Further, a handle is arranged on the lever 241 to facilitate use. The above water mixing switch 24 is only one embodiment of the present application, and other structures of the water mixing switch 24 such as a lever type valve can also be adopted by those skilled in the art.

[0034] The temperature controller 3 comprises a bimetallic strip temperature controller 32 and a temperature controller shell 31. The temperature controller shell 31 is a hollow shell structure, and the bimetallic strip temperature controller 32 is nested in the middle of the temperature controller shell 31.

[0035] A plurality of first through holes 311 are arranged on the rear side of the temperature controller shell 31. When the water mixing switch 24 is opened, the temperature-adjusted water fully enters the temperature controller shell 31 through the through holes. A slide rail 312 is arranged on the outer side of the temperature controller shell 31. A slide groove 16 matched with the slide rail 312 is arranged on the inner wall of the shell body 1 in the length direction. The slide rail 312 is arranged in the slide groove 16, so that the temperature controller shell 31 slides in the inner cavity of the shell body 1. A sliding switch 313 is arranged above the temperature controller shell 31. A second slot 15 is arranged in the shell body 1. The sliding switch 313 extends from the second slot 15. The sliding switch 313 is used to push the temperature controller 3 to move along the slide groove 16. An installation hole 314 is arranged at the central axis of the temperature controller shell 31.

[0036] The bimetallic strip temperature controller 32 comprises a central shaft 321, the two ends of the central shaft 321 are rotatably installed in the mounting hole 314, a driving device 323 is arranged on the rear side of the central shaft 321 and can be coupled with the transmission device 25, and a spiral bimetallic strip 322 is arranged on the outer periphery of the central shaft 321, and the two ends of the bimetallic strip 322 are connected to the outer periphery of the central shaft 321 and the inner wall of the temperature controller shell 31 respectively.

[0037] The bimetallic strip 322 is made of two kinds of metals with large difference in thermal expansion coefficient and is laminated or welded, when the temperature changes, the metal layer with high thermal expansion coefficient deforms more, and the metal layer with low thermal expansion coefficient deforms less, resulting in that the whole bimetallic strip 322 bends to the side with low thermal expansion coefficient, and the spiral design can convert the small deformation into a significant rotation angle. When the temperature changes, the deformation of the bimetallic strip 322 drives the central shaft 321 to rotate, provides an adjusting driving force, and drives the driving device 323 to rotate, when the driving device 323 and the transmission device 25 are in an assembled state, the driving device 323 can further drive the transmission device 25 to move, so that the water temperature is adjusted. A water outlet hole is arranged at the front end of the temperature controller shell 31, and the adjusted water flows out through the water outlet hole and the water outlet 13.

[0038] The driving device 323 is arranged on the rear side of the temperature controller shell 31, and the structure thereof is matched with the transmission device 25, and a second through hole 324 for water flow is arranged in the driving device 323. As a first embodiment of the driving device 323 and the driven device, as shown in Figure 2 , a gear transmission structure is adopted, the driving device 323 is a gear, the transmission device 25 is an inner gear, and a guide slope (not shown in the figure) is arranged on the assembled side of the gear and the inner gear, so as to facilitate the positioning of the gear and the inner gear, and further, a fine gear with high gear number can be used to improve the temperature control accuracy. As a second embodiment of the driving device 323 and the driven device, as shown in Figure 6 , a positioning pin transmission structure is adopted, the driving device 323 is a positioning pin, the transmission device 25 is a plurality of closely arranged pin holes, the positioning pin and the pin hole are both designed with chamfers, which can guide the cooperation between the positioning pin and the pin hole, and on the basis of meeting the strength of the positioning pin, increasing the density of the pin hole and reducing the size of the positioning pin can further improve the temperature adjustment accuracy. As a third embodiment of the driving device 323 and the driven device, as shown in Figure 7 , an expansion bolt transmission structure is adopted, the driving device 323 is an expansion bolt, the transmission device 25 is an arc-shaped groove, a tapered nail feeding mechanism made of rubber is arranged at the front end of the expansion bolt, the expansion bolt is in interference fit with the arc-shaped groove and elastically deforms to connect the driving device 323 and the transmission device 25, and the expansion bolt and the arc-shaped groove can realize continuous regulation and control of the water temperature.

[0039] Positioning grooves are arranged on both sides of the second slotted rear end, spring positioning beads are arranged in the positioning grooves, and arc-shaped positioning grooves matched with the positioning grooves are arranged in the sliding switch 313. When the sliding switch is pushed backward, the spring positioning beads are engaged in the positioning grooves, the position of the sliding switch 313 is positioned, and the driving device 323 is prevented from being disengaged from the transmission device 25 due to excessive water flow.

[0040] The sliding switch 313 is pushed forward and backward to disengage and engage the driving device 323 from and with the transmission device 25, thereby forming a physical switching mechanism of the "temperature adjustment mode" and the "temperature control mode". When the sliding switch 313 is pushed backward, the driving device 323 is coupled with the transmission device 25, the faucet is in the "temperature control mode", the thermal expansion of the bimetallic strip 322 drives the mixed water adjusting valve 2 to rotate, and the mixing ratio of cold and hot water is changed; when the driving device 323 is pushed forward, the driving device 323 is disengaged from the transmission device 25, the faucet is in the "temperature adjustment mode", and the user adjusts the water flow and the water temperature through the mixed water switch 24.

[0041] Further, in order to enhance the waterproof performance, sealing devices are arranged at the connections, such as between the first water inlet 11 and the first water inlet pipeline 21, between the second water inlet 12 and the second water inlet pipeline 22, around the mixed water adjusting valve 2, around the temperature controller 3, and the like, including but not limited to rubber sealing rings and the like.

[0042] Further, the first water inlet 11 and the second water inlet 12 of the outer shell 1 can be externally connected to include but not limited to standard pipe threaded joints and the like, to realize connection with a standard pipeline.

[0043] Further, the rear end of the outer shell 1 can be fixed to the outside of the present application in a manner including but not limited to bolt connection, glue joint and the like, but it should be noted that the sealing performance of the outer shell 1 should not be damaged.

[0044] In use, the initial state of the sliding switch 313 is located at the front side, the temperature controller 3 is separated from the mixed water regulating valve 2, at this time, the faucet is in the "temperature adjusting mode", when the lever 241 is pulled back, the water inlet pipeline is connected with the water outlet pipeline 23, the user adjusts the water outlet quantity by pulling the mixed water switch 24 forward and backward, and adjusts the water temperature by pulling left and right, the water enters the temperature controller 3 through the water outlet pipeline 23, the first through hole 311 and the second through hole 324, and soaks the bimetallic strip 322, the bimetallic strip 322 drives the transmission device 25 to rotate around the central shaft 321 under the thermal expansion effect, when the user adjusts the water temperature to be appropriate, the sliding switch 313 is pushed back, the driving device 323 and the transmission device 25 are connected, so that the mixed water regulating valve 2 and the temperature controller 3 are connected, at this time, the application is in the "temperature control mode", when the mixed water temperature is changed, the bimetallic strip 322 drives the driving device 323 and the transmission device 25 to rotate around the central shaft 321 under the thermal expansion effect, so as to drive the mixed water regulating valve 2 to rotate as a whole, the mixed proportion of cold water and hot water is maintained, and the water temperature is kept.

[0045] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A mechanical adjustable thermostatic mixing faucet, characterized in that, The utility model provides a kind of temperature control device, including: Outer shell (1), the inner cavity is provided in the outer shell (1), first water inlet (11), second water inlet (12) and water outlet (13) are provided in the outer shell (1); Mixing water regulating valve (2), the mixing water regulating valve (2) rotatably arranged in outer shell (1), first water inlet pipe (21), second water inlet pipe (22) and water outlet pipe (23) are provided in the mixing water regulating valve (2), the first water inlet pipe (21) is oppositely arranged with second water inlet pipe (22), water inlet part partially blocks water inlet pipe, water outlet pipe (23) is provided with mixing water switch (24) for opening and closing water outlet pipe (23) and rotating mixing water regulating valve (2), the front end of the mixing water regulating valve (2) is provided with transmission device (25); Temperature controller (3), the temperature controller (3) is slidably arranged in outer shell (1), including bimetallic strip temperature controller (32) and temperature controller shell (31), the bimetallic strip temperature controller (32) includes rotatable center shaft (321) connected in the temperature controller shell (31), helical bimetallic strip (322) connected at the outer periphery of center shaft (321) and the inner wall of temperature controller shell (31) respectively at both ends and drive device (323) arranged at the rear end of the center shaft (321), the drive device (323) is matched with the transmission device (25), and the drive device (323) is coupled with the transmission device (25) in the temperature controller shell (31) is provided with sliding switch (313).

2. The mechanical adjustable thermostatic mixing faucet according to claim 1, wherein, The first water inlet (11) and the second water inlet (12) are spaced apart by a first circumferential distance, the first water inlet pipe (21) and the second water inlet pipe (22) are spaced apart by a second circumferential distance, and the difference between the first circumferential distance and the second circumferential distance is not less than the circumferential width of any one of the water inlet pipes or the water inlets.

3. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, The mixing water switch (24) is fixedly connected with the mixing water regulating valve (2), a first slot (14) is provided in the outer shell (1), a lever (241) of the mixing water switch (24) extends from the first slot (14), and a circumferential width of the first slot (14) is wider than a width of the lever (241).

4. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, A slide rail (312) is provided on the outer side of the temperature controller shell (31), and a slide groove (16) matched with the slide rail (312) is provided on the inner wall of the outer shell (1) in the length direction.

5. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, The drive device (323) is a gear, and the transmission device (25) is an inner gear ring. The assembly side of the gear and the inner gear ring is provided with a guide slope.

6. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, The drive device (323) is a positioning pin, and the transmission device (25) is a plurality of pin holes. The edge of the positioning pin and the pin hole is provided with a chamfer.

7. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, The drive device (323) is an expansion bolt, and the transmission device (25) is an arc-shaped slot. A tapered rubber nail feeding mechanism is provided at the front end of the expansion bolt.

8. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, A first through hole (311) is provided on the rear side of the temperature controller shell (31), and a second through hole (324) is provided in the drive device (323).

9. The mechanical adjustable thermostatic mixing faucet of claim 1, wherein, The second slot is arranged in the outer shell body, the sliding switch extends from the second slot, the two sides of the rear end of the second slot are respectively provided with a positioning groove, the spring positioning bead is arranged in the positioning groove, and the arc-shaped positioning groove matched with the positioning groove is arranged in the sliding switch 313.

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