Adjustable temperature control valve anti-failure device

Abstract

The invention discloses an adjustable temperature control valve anti-failure device which comprises a valve body and a circulating pump, the valve body is communicated with a water outlet valve, one end of the circulating pump is communicated with a water inlet pipeline of a water heater, and the other end of the circulating pump is communicated with the water outlet valve through a connecting pipe; an impeller is rotationally connected into the connecting pipe, a valve element is rotationally connected into the water outlet valve, the water outlet valve is slidably connected with a clamping rod for limiting rotation of the valve element, and the impeller can drive the clamping rod to move so as to relieve limiting of the valve element after rotating by the specified number of turns. The device is convenient to operate, the water outlet temperature of the water mixing valve can be just proper, whether the valve fails or not at the moment can be judged before water outlet, and the anti-failure function of the valve can be well achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to an anti-failure device for an adjustable temperature-controlled valve. Background Art

[0002] Mixing valves are a product specifically developed for hot water systems, primarily used in electric water heaters, solar water heaters, and geothermal heating systems. Mechanical mixing valves often rely on manually adjusting the valve opening to varying degrees to regulate water temperature. This process often requires repeated adjustments to achieve the desired temperature, wasting water resources and impacting user experience. This is especially true in locations with unstable water pressure, where frequent pressure fluctuations necessitate constant adjustment of the mixing valve, resulting in a poor user experience and the risk of burns. After searching, the patent with publication number CN 117419189 A discloses a shower body, including a valve body, a water mixing valve core, a thermostatic valve core, a water outlet control valve, a thermostatic control valve and a top spray joint. The water mixing valve core, the thermostatic valve core, the water outlet control valve and the thermostatic control valve are respectively installed in the valve body; the valve body is provided with a cold water channel, a hot water channel, a mixing water chamber, a thermostatic water chamber, a water diversion chamber, a water outlet interface, a water outlet control switch and a thermostatic control switch. One of the water outlet interfaces of the valve body is a top spray outlet, and the top spray joint is installed in the top spray outlet. The top spray joint has an adjustable inner tube that can move up and down relative to the top spray outlet. However, the above device still has the following problems: when used after a certain period of time, cold water is stored in the pipe connecting the water heater to the valve body. When mixing water and discharging water, after adjusting the temperature, the cold water in the pipe needs to be released, resulting in a waste of water resources. In addition, the valve status at this time cannot be sensed, and it is impossible to determine whether the valve has failed, which poses a potential risk of scalding. Summary of the Invention

[0003] In order to solve the above problems in the prior art, a device for preventing failure of an adjustable temperature control valve is provided.

[0004] The technical solution adopted by the present invention to solve its technical problem is: The present invention proposes an anti-failure device for an adjustable temperature-controlled valve, comprising a valve body, the valve body being connected to a water outlet valve, and also comprising a circulating pump, one end of the circulating pump being connected to a water inlet pipe of a water heater, and the other end of the circulating pump being connected to the water outlet valve via a connecting pipe; an impeller being rotatably connected in the connecting pipe, a valve core being rotatably connected in the water outlet valve, a clamping rod being slidably connected to the water outlet valve for limiting the rotation of the valve core, and after the impeller rotates a specified number of times, it can drive the clamping rod to move, thereby releasing the limit on the valve core.

[0005] Preferably, one end of the clamping rod is connected to a compression spring, the other end of the compression spring is connected to the water outlet valve, and the valve core is provided with a clamping groove for the clamping rod to slide into.

[0006] Preferably, a rack is fixedly connected to one side of the clamping rod, and a toothless gear is coaxially fixedly connected to the impeller. The toothless gear and the rack are meshed. When the water flow drives the impeller to rotate, the rotation of the impeller can drive the clamping rod to move away from the clamping slot.

[0007] Preferably, the water outlet valve is slidably connected to a clamping block, which is connected to the water outlet valve via a spring. A ratchet is fixedly connected to the other side of the clamping rod, and the ratchet cooperates with the clamping block to achieve unidirectional movement of the clamping rod.

[0008] Preferably, the water outlet valve is provided with a slide groove, a slide rod is slidably connected in the slide groove, and the block is provided with a horizontal groove and an inclined groove that are interconnected. The slide rod can slide into the inclined groove through the horizontal groove. When the slide rod slides in the inclined groove, it can drive the block to move away from the ratchet, and finally make the ratchet and the block disengage.

[0009] Preferably, an inlet pipe and an outlet pipe are provided at both ends of the water outlet valve, and a bimetallic strip is connected to the end of the slide rod away from the block. The bimetallic strip is arranged on one side of the water inlet pipe. When the temperature of the water inlet pipe rises, the bimetallic strip is deformed to drive the slide rod to slide into the horizontal groove.

[0010] Preferably, the outlet valve is further connected to a switch for controlling the circulation pump to stop working. When the clamping rod moves out of the clamping slot and continues to move, it can touch the switch, thereby stopping the circulation pump.

[0011] Preferably, a limiting block is slidably connected in the water inlet pipe, and the valve core is provided with a limiting hole for the limiting block to slide into. Heat-expanding liquid is provided on one side of the limiting block, and when the heat-expanding liquid expands due to heat, it can drive the limiting block to slide into the limiting hole.

[0012] Preferably, the valve body is further connected to a safety valve assembly, the valve body is connected to a cold water pipe and a mixing pipe, and the mixing pipe is connected to the water inlet pipe.

[0013] Preferably, the valve body includes a temperature control valve for adjusting the water temperature, and the valve body is rotatably connected to a ball valve assembly that controls the opening or closing of the cold water pipe. Part of the water path of the cold water pipe flows into the temperature control valve, and the other part flows into the water inlet pipe of the water heater, and the water outlet pipe of the water heater is connected to the temperature control valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This application is provided with a circulation pump. By turning on the circulation pump, the valve body, the outlet valve and the residual cold water in the pipeline can be pumped back into the solar energy, realizing water circulation in the pipeline. It can ensure that after the outlet valve is opened, the outlet water temperature is appropriate, without waiting for water discharge, effectively improving the user experience. After a certain period of water circulation, the circulation pump can be automatically shut down without manual intervention, easy to operate, and can achieve the appropriate outlet water temperature of the mixing valve.

[0015] 2. The present application is provided with a card block, which can make the card rod move in one direction only. The bimetallic strip can sense the water temperature and then control the movement of the slide rod. The slide rod can drive the card block to disengage the ratchet teeth of the card rod, thereby realizing automatic reset of the device after use. No manual operation is required, the degree of automation is high, and the operation is more convenient. At the same time, the card rod can lock the valve core. When water circulation is in progress, the water outlet valve cannot be opened, thereby improving the safety of use.

[0016] 3. The present application is provided with a heat-expanding liquid. When the water temperature in the water inlet pipe is too high, the heat-expanding liquid expands, driving the limit block to move, and the limit block can slide into the valve core. When the water temperature is too high, the valve core is locked and the valve core cannot rotate, so that water cannot flow out. Before the water flows out, it can be judged whether the valve has failed at this time, which can better realize the valve's anti-failure function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which: Figure 1 It is the overall front view of the present invention; Figure 2 This is a side view of the valve body structure of the present invention; Figure 3 This is a cross-sectional view of the water outlet valve structure of the present invention; Figure 4 yes Figure 3 Cross-sectional view of the CC structure; Figure 5 yes Figure 4 A three-dimensional diagram of the structure of the middle card block; Figure 6 yes Figure 5 Sectional view of the DD structure.

[0018] Description of reference numerals: 1 Valve body; 2 Temperature control valve; 3 Safety valve assembly; 4 Ball valve assembly; 5 Cold water pipe; 6 Outlet valve; 7 Inlet pipe; 8 Outlet pipe; 9 Valve core; 10 Mixing pipe; 11 Circulating pump; 12 Lever; 13 Switch; 14 Toothless gear; 15 Impeller; 16 Ratchet; 17 Block; 18 Slide rod; 19 Bimetallic strip; 20 Telescopic column; 21 Horizontal slot; 22 Inclined slot; 23 Compression spring; 24 Limit block; 25 Kerosene. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0020] like Figures 1-6 As shown, this embodiment proposes an adjustable temperature control valve failure prevention device, including a valve body 1, the valve body 1 is connected to the water outlet valve 6, and also includes a circulating pump 11. One end of the circulating pump 11 is connected to the water inlet pipe of the water heater, and the other end of the circulating pump 11 is connected to the water outlet valve 6 through a connecting pipe. The circulating pump 11 can draw residual water in the water outlet valve 6, the valve body 1 and the pipeline into the water inlet pipe of the water heater, thereby realizing water circulation.

[0021] The circulation pump 11 can re-pump the valve body 1, the outlet valve 6 and the residual cold water in the pipeline into the solar energy to realize the water circulation in the pipeline. It can ensure that the temperature of the outlet water is appropriate after the outlet valve 6 is opened. There is no need to wait for the water to be drained, which effectively improves the user experience. After the water circulates for a certain period of time, the circulation pump 11 can be automatically shut down without manual intervention, which is easy to operate.

[0022] An impeller 15 is rotatably connected in the connecting pipe, a valve core 9 is rotatably connected in the water outlet valve 6, and a handle is fixedly connected to the valve core 9. By rotating the handle, the valve core 9 can be driven to rotate, thereby achieving water discharge. The water outlet valve 6 is slidably connected to a clamping rod 12 that limits the rotation of the valve core 9. After the impeller 15 rotates a specified number of times, it can drive the clamping rod 12 to move, thereby releasing the limit on the valve core 9.

[0023] One end of the card rod 12 is connected to a compression spring 23, and the other end of the compression spring 23 is connected to the water outlet valve 6. The valve core 9 is provided with a slot for the card rod 12 to slide into. The card rod 12 can only slide back and forth in the horizontal direction. The compression spring 23 is always in a compressed state. In the initial state, the elastic force of the compression spring 23 can make the card rod 12 slide into the slot, thereby limiting the valve core 9.

[0024] A rack is fixedly connected to one side of the clamping rod 12, and the impeller 15 is coaxially fixedly connected to the toothless gear 14. The toothless gear 14 and the rack are meshed. When the water flow drives the impeller 15 to rotate, the rotation of the impeller 15 can drive the clamping rod 12 to move away from the clamping slot. By reasonably setting the number of teeth of the toothless gear 14, the clamping rod 12 will be completely moved out of the clamping slot only after the toothless gear 14 rotates several times.

[0025] The water outlet valve 6 is slidably connected to a block 17, and the block 17 can only perform reciprocating motion in the vertical direction. The block 17 is connected to the water outlet valve 6 through a spring. A ratchet 16 is fixedly connected to the other side of the clamping rod 12. The upper end of the spring is connected to the block 17, and the lower end of the spring is connected to the water outlet valve 6. The elastic force of the spring can make the ratchet 16 and the block 17 cooperate, thereby realizing the unidirectional movement of the clamping rod 12. Specifically, the clamping rod 12 can only move in the direction of the compression spring 23, thereby realizing further compression of the compression spring 23.

[0026] The water outlet valve 6 is provided with a slide groove, in which a slide rod 18 is slidably connected. The block 17 is provided with a horizontal groove 21 and an inclined groove 22 that are interconnected. The slide rod 18 can slide into the inclined groove 22 via the horizontal groove 21. When the slide rod 18 slides in the inclined groove 22, it can drive the block 17 to move away from the ratchet 16, and finally disengage the ratchet 16 and the block 17.

[0027] The lower end of the slide rod 18 is slidably connected to a telescopic column 20, which is connected to the slide rod 18 by a return spring. The elastic force of the return spring causes the telescopic column 20 to always slide in the horizontal groove 21 and the oblique groove 22. The height of the horizontal groove 21 is higher than the height of the oblique groove 22. Therefore, after the telescopic column 20 slides from the horizontal groove 21 into the oblique groove 22, the telescopic column 20 cannot return to the horizontal groove 21 and can only continue to move in the oblique groove 22.

[0028] An inlet pipe 7 and an outlet pipe 8 are provided at both ends of the water outlet valve 6. A bimetallic strip 19 is connected to the end of the slide rod 18 away from the block 17. The bimetallic strip 19 is arranged on one side of the water inlet pipe 7. When the temperature of the water inlet pipe 7 rises, the bimetallic strip 19 deforms and can drive the slide rod 18 to slide into the horizontal groove 21.

[0029] The bimetallic strip 19 is a temperature sensing element formed by laminating two metal sheets with different thermal expansion coefficients. When the temperature changes, the bimetallic strip will bend and deform due to the different expansion coefficients of the two metals. The temperature sensing element of the bimetallic strip 19 is usually wound into a threaded shape and installed in a protective sleeve, which is fixed in the water outlet valve 6. One end of the bimetallic strip 19 is fixed, called the fixed end, and the other end is connected to the slide rod 18, called the free end.

[0030] The block 17 can make the card rod 12 move in one direction only, and the bimetallic strip 19 can sense the water temperature and then control the movement of the slide rod 18. Through the reasonable length of the bimetallic strip 19 and the width of the block 17, the slide rod 18 can drive the block 17 to disengage from the ratchet 16 of the card rod 12, so that the device can automatically reset after use. No manual operation is required, the degree of automation is high, and the operation is more convenient. At the same time, the card rod 12 can lock the valve core 9. When water circulation is in progress, the water outlet valve 6 cannot be opened, thereby improving the safety of use.

[0031] A switch 13 for controlling the circulation pump 11 to stop working is also connected to the water outlet valve 6. When the card rod 12 moves out of the card slot and continues to move, it can touch the switch 13, thereby stopping the circulation pump 11. The switch 13 and the circulation pump 11 are connected to a controller. The switch 13 can specifically be a proximity switch, a touch switch or other conventional switch. When the card rod 12 cooperates with the switch 13, the corresponding signal can be transmitted to the controller through the switch 13, and the controller controls the circulation pump 11 to stop working.

[0032] A limit block 24 is slidably connected inside the water inlet pipe 7, and the valve core 9 is provided with a limit hole for the limit block 24 to slide into. A heat-expanding liquid is provided on one side of the limit block 24. The heat-expanding liquid can specifically be kerosene 25. When the heat-expanding liquid expands due to heat, it can drive the limit block 24 to slide into the limit hole.

[0033] When the water temperature in the water inlet pipe 7 is too high, the liquid expands due to heat, driving the limit block 24 to move, and the limit block 24 can slide into the valve core 9. When the water temperature is too high, the valve core 9 is locked and the valve core 9 cannot rotate, so that water cannot flow out. Before the water flows out, it can be judged whether the valve has failed at this time, which can better realize the anti-failure function of the valve.

[0034] The valve body 1 is also connected to a safety valve assembly 3, which is equipped with a one-way motion assembly driven by a spring. When the pressure in the valve body 1 is too high, the air pressure drives the spring to move, which can open the safety valve assembly 3 and deflate the valve body 1 to prevent the air pressure in the valve body 1 from being too high.

[0035] The valve body 1 is connected to the cold water pipe 5 and the mixing pipe 10, the mixing pipe 10 is connected to the water inlet pipe 7, the valve body 1 includes a temperature control valve 2 for adjusting the water temperature, the valve body 1 is rotatably connected to the ball valve assembly 4 for controlling the opening or closing of the cold water pipe 5, part of the water path of the cold water pipe 5 flows into the temperature control valve 2, and the other part flows into the water inlet pipe of the water heater, and the water outlet pipe of the water heater is connected to the temperature control valve 2.

[0036] The ball valve assembly 4 can control the opening or closing of the cold water pipe 5. The part of the cold water pipe 5 flowing into the temperature control valve 2 can be mixed with the outlet pipe of the hot water pipe in the temperature control valve 2. The mixed water flows into the mixing tube 10 and then flows into the water inlet pipe 7. When the valve core 9 is opened, it can flow into the outlet pipe 8. The outlet pipe 8 is connected to the shower to realize water outlet.

[0037] A method for using an adjustable temperature control valve anti-failure device, using the above-mentioned adjustable temperature control valve anti-failure device, includes the following steps: Start the circulation pump 11, which pumps water from the water inlet pipe 7, the valve body 1, and the pipeline into the water inlet pipeline of the hot water pipe. The water flow drives the impeller 15 to rotate, which in turn drives the toothless gear 14 to rotate. The toothless gear 14 drives the clamping rod 12 to move away from the valve body 1. During this process, the clamping block 17 ensures that the clamping rod 12 can only move in one direction. When the circulating pump 11 has been working for a specified time, the lever 12 touches the switch 13, controlling the circulating pump 11 to stop working. At the same time, the lever 12 releases the limit on the valve core 9. By opening the valve core 9, part of the water in the cold water pipe 5 enters the water heater, and the other part is mixed with the hot water in the temperature control valve 2. The mixed water flows into the water inlet pipe 7 through the mixing pipe 10 to realize water discharge. During use, the bimetallic strip 19 senses the change in water temperature in the water inlet pipe 7 and deforms, driving the slide rod 18 to slide into the horizontal groove 21. When the temperature of the valve body 1 cools down, the bimetallic strip 19 drives the slide rod 18 to return to its original position. The slide rod 18 moves in the inclined groove 22, driving the clamping block 17 to move away from the ratchet 16, thereby releasing the limit of the clamping rod 17 on the clamping rod 12, and the compression spring 23 drives the clamping rod 12 to return to its original position. If the water temperature in the water inlet pipe 7 is too high, the liquid expands due to heat and drives the limit block 24 to slide into the limit hole of the valve core 9, thereby limiting the position of the valve core 9. At this time, the valve core 9 cannot be rotated to open.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A temperature-controlled valve failure prevention device, comprising a valve body (1), characterized in that: The valve body (1) is connected to a water outlet valve (6) and also includes a circulation pump (11). One end of the circulation pump (11) is connected to the water inlet pipe of the water heater, and the other end of the circulation pump (11) is connected to the water outlet valve (6) through a connecting pipe. An impeller (15) is rotatably connected in the connecting pipe, and a valve core (9) is rotatably connected in the water outlet valve (6). The water outlet valve (6) is slidably connected to a clamping rod (12) for limiting the rotation of the valve core (9). After the impeller (15) rotates a specified number of times, it can drive the clamping rod (12) to move, thereby releasing the limit on the valve core (9).

2. The anti-failure device for an adjustable temperature control valve according to claim 1, characterized in that: One end of the clamping rod (12) is connected to a compression spring (23), and the other end of the compression spring (23) is connected to the water outlet valve (6). The valve core (9) is provided with a clamping groove for the clamping rod (12) to slide into.

3. The anti-failure device for an adjustable temperature control valve according to claim 2, characterized in that: A rack is fixedly connected to one side of the clamping rod (12), and a toothless gear (14) is coaxially fixedly connected to the impeller (15). The toothless gear (14) and the rack are meshed. When the water flow drives the impeller (15) to rotate, the rotation of the impeller (15) can drive the clamping rod (12) to move in a direction away from the clamping slot.

4. The anti-failure device for an adjustable temperature control valve according to claim 3, characterized in that: The water outlet valve (6) is slidably connected to a clamping block (17), and the clamping block (17) is connected to the water outlet valve (6) via a spring. The other side of the clamping rod (12) is fixedly connected to a ratchet (16), and the ratchet (16) and the clamping block (17) cooperate to achieve unidirectional movement of the clamping rod (12).

5. The anti-failure device for an adjustable temperature control valve according to claim 4, characterized in that: The water outlet valve (6) is provided with a slide groove, in which a slide rod (18) is slidably connected. The clamping block (17) is provided with a horizontal groove (21) and an inclined groove (22) that are interconnected. The slide rod (18) can slide into the inclined groove (22) via the horizontal groove (21). When the slide rod (18) slides in the inclined groove (22), it can drive the clamping block (17) to move in a direction away from the ratchet (16), and finally the ratchet (16) and the clamping block (17) are disengaged.

6. The anti-failure device for an adjustable temperature control valve according to claim 5, characterized in that: A water inlet pipe (7) and a water outlet pipe (8) are provided at both ends of the water outlet valve (6); a bimetallic strip (19) is connected to one end of the slide rod (18) away from the block (17); the bimetallic strip (19) is arranged on one side of the water inlet pipe (7); when the temperature of the water inlet pipe (7) rises, the bimetallic strip (19) deforms and can drive the slide rod (18) to slide into the horizontal groove (21).

7. The anti-failure device for an adjustable temperature control valve according to claim 2, characterized in that: The outlet valve (6) is also connected to a switch (13) for controlling the circulation pump (11) to stop working. When the clamping rod (12) moves out of the clamping slot and continues to move, it can touch the switch (13), thereby stopping the circulation pump (11).

8. The anti-failure device for an adjustable temperature control valve according to claim 6, characterized in that: A limiting block (24) is slidably connected in the water inlet pipe (7), and the valve core (9) is provided with a limiting hole for the limiting block (24) to slide into. A heat-expanding liquid is provided on one side of the limiting block (24), and when the heat-expanding liquid expands due to heat, it can drive the limiting block (24) to slide into the limiting hole.

9. The anti-failure device for an adjustable temperature control valve according to claim 6, characterized in that: The valve body (1) is also connected to a safety valve assembly (3), and the valve body (1) is connected to a cold water pipe (5) and a mixing pipe (10), and the mixing pipe (10) is connected to the water inlet pipe (7).

10. The anti-failure device for an adjustable temperature control valve according to claim 9, characterized in that: The valve body (1) includes a temperature control valve (2) for adjusting the water temperature. The valve body (1) is rotatably connected to a ball valve assembly (4) for controlling the opening or closing of a cold water pipe (5). A portion of the water path of the cold water pipe (5) flows into the temperature control valve (2), and another portion flows into the water inlet pipe of the water heater. The water outlet pipe of the water heater is connected to the temperature control valve (2).

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