Dual-anti-scald constant-temperature faucet device with built-in plastic core

Abstract

The double-anti-scalding constant-temperature faucet device comprises a body shell, a hot water inlet pipe, a cold water inlet pipe, a flow switch, a plastic pipe core and a water outlet pipe, the plastic pipe core is arranged in the body shell, and a hot water inlet is formed in the end, close to the hot water inlet pipe, of the plastic pipe core; the hot water inlet is connected with the hot water inlet pipe, a cavity is formed between the plastic pipe core and the pipe wall of the body shell and is a cold water cavity, a cold water inlet is formed in the end, away from the cold water inlet pipe, of the plastic pipe core, and a mixing cavity is formed in the plastic pipe core. The hot water inlet and the cold water inlet are both communicated with the mixing cavity, a mixing outlet pipe is arranged at the end, close to the flow switch, of the mixing cavity, the flow switch is connected with a flow valve, the flow valve is arranged at the position of the mixing outlet pipe, and the mixing cavity is communicated with a confluence cavity through the mixing outlet pipe. And the confluence cavity is communicated with the water outlet.

Description

Technical Field

[0001] The invention belongs to the technical field of faucets, and in particular refers to a double anti-scalding constant-temperature faucet device with a built-in plastic core. Background Art

[0002] In many scenarios involving the use of hot water, such as home bathrooms, public bathing facilities, and some industrial hot water applications, mixing hot water and cold water is a common requirement. Traditional water mixing devices have many design defects, which make it difficult to effectively ensure the safety and comfort of users. Most traditional water mixing equipment lacks a precise temperature control mechanism, and only relies on rough valves to adjust the flow of hot and cold water. It is impossible to accurately stabilize the water temperature, and it is easy for the water temperature to be too high and scald the user. Moreover, in a water supply environment with large fluctuations in water temperature, traditional devices cannot respond in time and adjust the mixing ratio, causing the water temperature to fluctuate, which not only affects the user experience, but also increases the risk of scalding. In addition, traditional water mixing devices usually do not consider anti-scalding safety designs. Users may accidentally touch high-temperature components or hot water splashes during operation, further exacerbating the possibility of scalding accidents. This is especially dangerous in homes with elderly people, children or public use scenarios. Summary of the invention

[0003] In order to overcome the problems of the prior art, the present invention designs a double anti-scalding thermostatic faucet device with a built-in plastic core, which can automatically control the temperature and avoid scalding.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a double anti-scalding thermostatic faucet device with a built-in plastic core, comprising a main body shell, a hot water inlet pipe, a cold water inlet pipe, a flow switch, a plastic tube core and a water outlet pipe, the plastic tube core is arranged in the main body shell, and a hot water inlet is arranged at one end of the plastic tube core close to the hot water inlet pipe, and the hot water inlet is connected to the hot water inlet pipe. There is a cavity between the plastic tube core and the tube wall of the main body shell, which is a cold water cavity, and a cold water inlet is arranged at one end of the plastic tube core away from the cold water inlet pipe. A mixing cavity is arranged in the plastic tube core, and the hot water inlet and the cold water inlet are both connected to the mixing cavity. A mixing outlet pipe is arranged at one end of the mixing cavity close to the flow switch, and the flow switch is connected to a flow valve, and the flow valve is arranged at the end of the mixing outlet pipe, and the mixing cavity is connected to a confluence cavity through the mixing outlet pipe, and the confluence cavity is connected to the water outlet pipe.

[0005] Furthermore, it also includes a temperature adjustment handle, which is connected to a driving member. An adjusting piston is provided in the mixing chamber, and the side of the adjusting piston blocks part of the hot water inlet and the cold water inlet at the same time. By turning the temperature adjustment handle, the driving member can drive the adjusting piston to move axially, thereby changing the ratio of the hot water inlet and the cold water inlet blocked by the adjusting piston. The adjusting piston can completely block the hot water inlet or completely block the cold water inlet.

[0006] Further, the driving member includes a sliding sleeve, a piston mounting member and a cylindrical bracket, the diameter of the middle portion of the piston mounting member is larger than the diameters of the two ends, and the regulating piston is mounted in the middle portion of the piston mounting member;

[0007] The cylindrical bracket is installed at the end of the mixing chamber away from the temperature adjustment handle through a first spring, and a surrounding rib plate is provided at the center of the cylindrical bracket. The rib plate is arranged around, and one end of the piston mounting member is inserted into the center of the rib plate;

[0008] The sliding sleeve is arranged at one end of the mixing chamber close to the temperature adjustment handle, a top cap is installed in the sliding sleeve via a second spring, the elastic force of the second spring is greater than the elastic force of the first spring, and the other end of the piston mounting member supports the top cap;

[0009] When the temperature adjustment handle is rotated, the sliding sleeve can be driven to slide in the mixing chamber.

[0010] Furthermore, the piston mounting member adopts a thermistor, a cavity is provided inside the thermistor, the thermistor is filled with heat-expandable material, and a push rod is provided at one end of the thermistor close to the temperature adjustment handle, and the push rod supports the top cap; when the temperature rises, the heat-expandable material in the thermistor expands due to the heat, and will push the push rod outward, thereby increasing the length of the piston mounting member.

[0011] Furthermore, an external thread is provided in the middle of the piston mounting piece, a threaded hole is provided in the center of the regulating piston, and the regulating piston is connected to the piston mounting piece through threads.

[0012] Furthermore, the driving member also includes a screw, the temperature adjustment handle is connected to the screw, the sliding sleeve is provided with a threaded hole, the screw cooperates with the threaded hole of the sliding sleeve, and when the temperature adjustment handle is rotated, the sliding sleeve is driven by the screw to move in the mixing chamber.

[0013] The beneficial effects of the double anti-scalding thermostatic faucet device with a built-in plastic core of the present invention are as follows: Precise temperature control and anti-scalding: This device can accurately adjust the opening ratio of the hot water inlet and the cold water inlet through the ingenious cooperation of the temperature adjustment handle and the adjustment piston, thereby accurately controlling the water temperature in the mixing chamber and effectively preventing scalding accidents caused by excessive water temperature.

[0014] Automatic temperature control and anti-scalding: The setting of the thermal element gives the device the ability to automatically sense changes in water temperature. Once the water temperature deviates from the set range, the thermal element will quickly drive the regulating piston to move and automatically adjust the mixing ratio of hot water and cold water to keep the water temperature within a safe and comfortable range.

[0015] When the cold water flow is cut off, the hot water is automatically turned off: when the cold water flow is cut off, the temperature of the mixed water rises, the temperature bulb of the thermistor is heated, causing the push rod to extend; the regulating piston moves toward the hot water inlet, and then the hot water is turned off; thereby preventing the hot water from flowing out and preventing the user from being scalded by the hot water.

[0016] Structural anti-scalding design: The overall structural layout of the device is reasonable, and the hot water inlet pipe, cold water inlet pipe, mixing chamber and other components are integrated into the plastic tube core, reducing the possibility of high-temperature components being exposed to the outside and reducing the probability of users accidentally touching high-temperature parts and being scalded. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a double anti-scalding thermostatic faucet device with a built-in plastic core according to the present invention;

[0018] Figure 2 It is a structural schematic diagram of a double anti-scalding thermostatic faucet device with a built-in plastic core according to the present invention;

[0019] Figure 3 The present invention is a structural schematic diagram of a double anti-scalding thermostatic faucet device with a built-in plastic core.

[0020] Among them, 1-body shell, 2-hot water inlet pipe, 3-cold water inlet pipe, 4-flow switch, 41-flow valve, 5-plastic tube core, 51-hot water inlet, 52-cold water inlet, 53-mixing chamber, 531-mixing outlet pipe, 54-confluence chamber, 55-adjusting piston, 6-outlet pipe, 7-temperature adjustment handle, 71-driving member, 711-sliding sleeve, 7111-second spring, 7112-top cap, 712-piston mounting member, 7121-thermal element, 7122-top rod, 713-cylindrical bracket, 7131-first spring, 7132-rib plate, 714-screw. (71 is not marked) DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-3 As shown, the present invention is a double anti-scalding thermostatic faucet device with a built-in plastic core, comprising a body shell 1, a hot water inlet pipe 2, a cold water inlet pipe 3, a flow switch 4, a plastic tube core 5 and a water outlet pipe 6. The body shell 1 is provided with the plastic tube core 5, and the end of the plastic tube core 5 close to the hot water inlet pipe 2 is provided with a hot water inlet 51, and the hot water inlet 51 is connected to the hot water inlet pipe 2. There is a cavity between the plastic tube core 5 and the tube wall of the body shell 1, and the cavity is a cold water cavity 11. The plastic tube core 5 is far away from the cold water cavity 11. A cold water inlet 52 is provided at one end away from the cold water inlet pipe 3, a mixing chamber 53 is provided in the plastic tube core 5, the hot water inlet 51 and the cold water inlet 52 are both connected to the mixing chamber 53, and a mixing outlet pipe 531 is provided at one end of the mixing chamber 53 close to the flow switch 4. The flow switch 4 is connected to the flow valve 41, and the flow valve 41 is provided at the end of the mixing outlet pipe 531. The mixing chamber 53 is connected to the confluence chamber 54 through the mixing outlet pipe 531, and the confluence chamber 54 is connected to the outlet pipe 6.

[0023] Furthermore, it also includes a temperature adjustment handle 7, which is connected to a driving member 71. An adjusting piston 55 is provided in the mixing chamber 53, and the side of the adjusting piston 55 blocks part of the hot water inlet 51 and the cold water inlet 52 at the same time. By rotating the temperature adjustment handle 7, the driving member 71 can drive the adjusting piston 55 to move axially, thereby changing the ratio of the hot water inlet 51 and the cold water inlet 52 blocked by the adjusting piston 55. The adjusting piston 55 can completely block the hot water inlet 51 or completely block the cold water inlet 52.

[0024] Furthermore, the driving member 71 includes a sliding sleeve 711, a piston mounting member 712 and a cylindrical bracket 713. The diameter of the middle portion of the piston mounting member 712 is larger than the diameters of both ends, and the regulating piston 55 is mounted in the middle portion of the piston mounting member 712.

[0025] The cylindrical bracket 713 is installed at the end of the mixing chamber 53 away from the temperature adjustment handle 7 through the first spring 7131. The center of the cylindrical bracket 713 is provided with a surrounding rib plate 7132. The rib plate 7132 is arranged around, and one end of the piston mounting member 712 is inserted into the center of the rib plate 7132.

[0026] The sliding sleeve 711 is arranged at one end of the mixing chamber 53 close to the temperature adjustment handle 7, and a top cap 7112 is installed in the sliding sleeve 711 through a second spring 7111, the elastic force of the second spring 7111 is greater than the elastic force of the first spring 7132, and the other end of the piston mounting member 712 supports the top cap 7112;

[0027] When the temperature adjustment handle 7 is rotated, the sliding sleeve 711 can be driven to slide in the mixing chamber 53 .

[0028] Furthermore, the piston mounting member 712 adopts a thermistor 7121, a cavity is provided in the thermistor 7121, and the thermistor 7121 is filled with a heat-expandable material. The end of the thermistor 7121 close to the temperature adjustment handle 7 is provided with a push rod 7122, and the push rod 7122 supports the top cap 7112; when the temperature rises, the heat-expandable material in the thermistor 56 expands due to the heat, and will push the push rod 7122 outward, thereby increasing the length of the piston mounting member 712. When the amount of cold water inflow is small, resulting in the water temperature in the mixing chamber 53 being too high, the internal pressure of the thermistor 56 increases due to thermal expansion and contraction, and the push rod 561 is pushed out, so that the length of the thermistor 56 becomes longer. At this time, the first spring is compressed, and the regulating piston 55 installed on the thermistor 56 moves toward the side close to the hot water inlet 51, thereby reducing the amount of hot water inflow. When the cold water supply stops and the hot water temperature is too high, the regulating piston 55 will completely block the hot water inlet 51.

[0029] Furthermore, an external thread is provided at the middle of the piston mounting member 712 , a threaded hole is provided at the center of the regulating piston 55 , and the regulating piston 55 is connected to the piston mounting member 712 through threads.

[0030] Furthermore, the driving member 71 also includes a screw 714, the temperature adjustment handle 7 is connected to the screw 714, the sliding sleeve 711 is provided with a threaded hole, the screw 714 cooperates with the threaded hole of the sliding sleeve 711, and when the temperature adjustment handle 7 is rotated, the sliding sleeve 711 is driven by the screw 714 to move in the mixing chamber 53.

[0031] The beneficial effects of the double anti-scalding thermostatic faucet device with a built-in plastic core of the present invention are as follows: Precise temperature control and anti-scalding: This device can accurately adjust the opening ratio of the hot water inlet and the cold water inlet through the ingenious cooperation of the temperature adjustment handle and the adjustment piston, thereby accurately controlling the water temperature in the mixing chamber and effectively preventing scalding accidents caused by excessive water temperature.

[0032] Automatic temperature control and anti-scalding: The setting of the thermal element gives the device the ability to automatically sense changes in water temperature. Once the water temperature deviates from the set range, the thermal element will quickly drive the regulating piston to move and automatically adjust the mixing ratio of hot water and cold water to keep the water temperature within a safe and comfortable range.

[0033] When the cold water flow is cut off, the hot water is automatically turned off: when the cold water flow is cut off, the temperature of the mixed water rises, the temperature bulb of the thermistor is heated, causing the push rod to extend; the regulating piston moves toward the hot water inlet, and then the hot water is turned off; thereby preventing the hot water from flowing out and preventing the user from being scalded by the hot water.

[0034] Structural anti-scalding design: The overall structural layout of the device is reasonable, and the hot water inlet pipe, cold water inlet pipe, mixing chamber and other components are integrated into the plastic tube core, reducing the possibility of high-temperature components being exposed to the outside and reducing the probability of users accidentally touching high-temperature parts and being scalded.

[0035] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual content is not limited to this. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A double anti-scalding thermostatic faucet device with a built-in plastic core, characterized in that: The utility model comprises a main body shell (1), a hot water inlet pipe (2), a cold water inlet pipe (3), a flow switch (4), a plastic tube core (5) and a water outlet pipe (6); the main body shell (1) is provided with the plastic tube core (5); an end of the plastic tube core (5) close to the hot water inlet pipe (2) is provided with a hot water inlet (51); the hot water inlet (51) is connected to the hot water inlet pipe (2); a cavity exists between the plastic tube core (5) and the tube wall of the main body shell (1); the cavity is a cold water cavity (11); an end of the plastic tube core (5) away from the cold water inlet pipe (3) is provided with a A cold water inlet (52), a mixing chamber (53) is provided in the plastic tube core (5), the hot water inlet (51) and the cold water inlet (52) are both connected to the mixing chamber (53), a mixing outlet pipe (531) is provided at one end of the mixing chamber (53) close to the flow switch (4), the flow switch (4) is connected to a flow valve (41), the flow valve (41) is provided at the end of the mixing outlet pipe (531), the mixing chamber (53) is connected to a confluence chamber (54) through the mixing outlet pipe (531), and the confluence chamber (54) is connected to the water outlet pipe (6).

2. A double anti-scalding thermostatic faucet device with a built-in plastic core according to claim 1, characterized in that: The invention also comprises a temperature adjustment handle (7), wherein the temperature adjustment handle (7) is connected to a driving member (71), and an adjusting piston (55) is sleeved in the mixing chamber (53). The side surface of the adjusting piston (55) blocks part of the hot water inlet (51) and the cold water inlet (52) at the same time. When the temperature adjustment handle (7) is rotated, the driving member (71) can drive the adjusting piston (55) to move axially, thereby changing the ratio of the hot water inlet (51) and the cold water inlet (52) blocked by the adjusting piston (55). The adjusting piston (55) can completely block the hot water inlet (51) or completely block the cold water inlet (52).

3. A double anti-scalding thermostatic faucet device with a built-in plastic core according to claim 2, characterized in that: The driving member (71) comprises a sliding sleeve (711), a piston mounting member (712) and a cylindrical bracket (713); the diameter of the middle portion of the piston mounting member (712) is larger than the diameters at both ends; and the regulating piston (55) is mounted in the middle portion of the piston mounting member (712); The cylindrical support (713) is installed at one end of the mixing chamber (53) away from the temperature adjustment handle (7) through a first spring (7131), and a surrounding rib plate (7132) is provided at the center of the cylindrical support (713). The rib plate (7132) is arranged in a surrounding manner, and one end of the piston mounting member (712) is inserted into the center of the rib plate (7132); The sliding sleeve (711) is arranged at one end of the mixing chamber (53) close to the temperature adjustment handle (7), and a top cap (7112) is installed in the sliding sleeve (711) via a second spring (7111), the elastic force of the second spring (7111) is greater than the elastic force of the first spring (7132), and the other end of the piston mounting member (712) supports the top cap (7112); When the temperature adjustment handle (7) is rotated, it can drive the sliding sleeve (711) to slide in the mixing chamber (53).

4. A double anti-scalding thermostatic faucet device with a built-in plastic core according to claim 3, characterized in that: The piston mounting member (712) adopts a thermistor (7121), a cavity is provided in the thermistor (7121), the thermistor (7121) is filled with a heat-expandable material, and a push rod (7122) is provided at one end of the thermistor (7121) close to the temperature adjustment handle (7), and the push rod (7122) supports the top cap (7112); when the temperature rises, the heat-expandable material in the thermistor (56) expands due to the heat, and pushes the push rod (7122) outward, thereby increasing the length of the piston mounting member (712).

5. A double anti-scalding thermostatic faucet device with a built-in plastic core according to claim 4, characterized in that: The piston mounting member (712) is provided with an external thread in the middle, the regulating piston (55) is provided with a threaded hole in the center, and the regulating piston (55) is connected to the piston mounting member (712) via threads.

6. A double anti-scalding thermostatic faucet device with a built-in plastic core according to claim 4, characterized in that: The driving member (71) further comprises a screw (714), the temperature adjustment handle (7) is connected to the screw (714), the sliding sleeve (711) is provided with a threaded hole, the screw (714) cooperates with the threaded hole of the sliding sleeve (711), and when the temperature adjustment handle (7) is rotated, the sliding sleeve (711) is driven by the screw (714) to move in the mixing chamber (53).

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