Automatic cut-off type water mixing valve

Abstract

The utility model provides an automatic cut-off type water mixing valve, and belongs to the technical field of valves. An automatic cut-off type water mixing valve comprises a valve body, a water inlet is formed in the side end face of the valve body, a water outlet is formed in the bottom of the valve body, and a valve element assembly and a cut-off assembly are arranged in the valve body. The valve element assembly comprises a valve rod and a valve element, threads are arranged on the peripheral side of the valve rod, and at least two grooves are further formed in the peripheral side of the valve rod. The cut-off assembly comprises a force storage disc rotating in the valve body, the force storage disc is fixed to the inner wall of the valve body through a force storage torsional spring, a reset rod is further rotationally arranged in the valve body, an expansion cavity is further formed in the valve body, a sliding block is arranged in the expansion cavity in a sliding mode, an abutting shaft is arranged on the sliding block, and the abutting shaft is connected with the reset rod. According to the water mixing valve, whether the temperature in the valve cavity is too high or not can be detected through the paraffin in the expansion cavity, the valve can be automatically closed when the temperature is too high, a user is prevented from being scalded by overheated water, and the water mixing valve is safer.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and in particular relates to an automatic cut-off water mixing valve. Background Art

[0002] A mixing valve is a valve that mixes hot and cold water. In fact, the valve itself cannot mix water, but it is connected to the cold and hot water pipes to play a mixing role.

[0003] Mixing valves are used to mix hot and cold water to reach a suitable temperature for supply to users. However, sometimes the hot water outlet of the valve is opened too wide, which will cause the water temperature to be high. Continuous outflow will cause the hot water to be lost quickly and there is a possibility of scalding the user. In addition, closing the valve still requires manual rotation, which is time-consuming and laborious. Utility Model Content

[0004] The utility model aims at solving the deficiencies of the prior art and provides an automatic cut-off water mixing valve.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: an automatic cut-off type water mixing valve, comprising a valve body, characterized in that: a water inlet is provided on the side end surface of the valve body, a water outlet is provided on the bottom of the valve body, and a valve core assembly and a cut-off assembly are provided in the valve body;

[0006] The valve core assembly comprises a valve stem and a valve core, wherein the outer peripheral side of the valve stem is provided with threads, and the outer peripheral side of the valve stem is also provided with at least two grooves;

[0007] The cut-off assembly includes a force storage disk rotating in the valve body, the force storage disk is fixed to the inner wall of the valve body through a force storage torsion spring, a reset rod is also rotatably provided in the valve body, an expansion chamber is also opened in the valve body, a slider is slidably provided in the expansion chamber, an abutment shaft is provided on the slider, and the abutment shaft abuts against the reset rod.

[0008] Optionally, a valve cavity is provided inside the valve body, wherein the water inlet and the water outlet are both connected to the valve cavity, the valve core is located in the valve cavity, wherein the valve stem is threadedly connected to the valve body, the valve stem penetrates the valve body to the outside, and a handle is fixed to the outside part of the valve stem. Optionally, the force storage disc is buckled in the groove of the valve stem, and a side end surface of the force storage disc away from the valve core is provided with a plurality of oblique openings.

[0009] Optionally, a reset cavity is opened on the outer peripheral side of the valve body, the reset rod rotates in the reset cavity, a protrusion is provided at the bottom of the reset rod, the protrusion is abutted against the inclined block, and the reset rod passes through the valve body and extends to the outside.

[0010] Optionally, the expansion chamber is adjacent to the valve chamber, and the expansion chamber is filled with paraffin.

[0011] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Due to the setting of the cut-off component, the temperature in the valve cavity can be detected through the paraffin in the expansion cavity to see if it is overheated. When it is overheated, the valve will be automatically closed to prevent the user from being scalded by overheated water, making the mixing valve safer.

[0013] 2. Moreover, through the setting of the reset rod, there is no need for manual rotation. Only a small force is needed to move the reset rod, so as to achieve a more labor-saving effect when closing the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model.

[0016] Figure 3 This is a three-dimensional diagram of the interior of the valve of the utility model.

[0017] 10. Valve body; 11. Valve stem; 12. Handle; 13. Valve core; 14. Force storage disk; 15. Force storage torsion spring; 16. Reset rod; 17. Reset chamber; 18. Abutment shaft; 19. Expansion chamber; 20. Slider; 21. Valve chamber. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0019] As shown in Figures 1-3, an automatic cut-off type water mixing valve includes a valve body 10, characterized in that: a water inlet is provided on the side end face of the valve body 10, a water outlet is provided on the bottom of the valve body 10, a valve core assembly and a cut-off assembly are provided in the valve body 10, the valve core assembly includes a valve stem 11 and a valve core 13, a thread is provided on the outer peripheral side of the valve stem 11, and at least two grooves 22 are also provided on the outer peripheral side of the valve stem 11, the cut-off assembly includes a force storage disk 14 rotating in the valve body 10, the force storage disk 14 is fixed to the inner wall of the valve body 10 by a force storage torsion spring 15, and a compound spring 13 is also provided in the valve body 10 for rotation. A reset rod 16 is provided, and an expansion chamber 19 is further provided in the valve body 10. A slider 20 is slidably provided in the expansion chamber 19. An abutting shaft 18 is provided on the slider 20, and the abutting shaft 18 abuts against the reset rod 16. A valve chamber 21 is provided inside the valve body 10, and the expansion chamber 19 is adjacent to the valve chamber 21. The expansion chamber 19 is filled with paraffin, wherein the water inlet and the water outlet are connected to the valve chamber 21, and the valve core 13 is located in the valve chamber 21, wherein the valve stem 11 is threadedly connected to the valve body 10, and the valve stem 11 passes through the valve body 10 to the outside, and a handle 12 is fixed to the external part of the valve stem 11.

[0020] The force storage disk 14 is snapped into 22 of the valve stem 11. The end face of the force storage disk 14 on one side away from the valve core 13 is provided with a plurality of oblique openings. A reset cavity 17 is opened on the outer peripheral side of the valve body 10. The reset rod 16 rotates in the reset cavity 17. A protrusion is provided at the bottom of the reset rod 16. The protrusion abuts against the oblique block. The reset rod 16 passes through the valve body 10 and extends to the outside.

[0021] When in use, the handle 12 is turned, and the threaded setting of the valve stem 11 causes the valve stem 11 to drive the valve core 13 to move upward, so that the water outlet is connected to the water inlet. At this time, the valve is opened, and then the cold and hot water from the two water inlets are mixed to form warm water, and the rotation of the valve stem 11 drives the storage disk 14 to rotate, and the storage torsion spring 15 is used to store force, and then the convex block on the reset rod 16 is used to limit the reversal of the storage disk 14, so that the valve can be adjusted to a fixed temperature. When the temperature suddenly rises, the heat of the hot water will enter the expansion chamber 19, and when the temperature of the paraffin melting is reached, the heat of the hot water will enter the expansion chamber 19. After the expansion cavity 19 is expanded, the abutting slider 20 and the abutting shaft 18 move toward the side close to the handle 12, and the abutting shaft 18 abuts the reset rod 16, driving the reset rod 16 and the protruding block to rotate, so that the protruding block is separated from the limiting force storage disk 14. At this time, under the force storage torsion spring 15's force storage release action, the force storage disk 14 is driven to rotate in the opposite direction, and the rotation of the force storage disk 14 drives the valve stem 11 to rotate in the opposite direction, which can drive the valve core 13 to move downward, thereby blocking the water inlet, preventing overheated water from scalding the user, and making the water mixing valve safer.

[0022] When the valve needs to be closed, the external reset rod 16 is directly pushed to make the protrusion disengage from the limiting force storage disk 14. Then the valve core 13 can be closed by relaxing the force storage torsion spring 15. No manual rotation is required, and only a small amount of force is needed to push it, thereby achieving a labor-saving effect.

[0023] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. An automatic cut-off water mixing valve, comprising a valve body (10), characterized in that: The side end surface of the valve body (10) is provided with a water inlet, the bottom of the valve body (10) is provided with a water outlet, and the valve body (10) is provided with a valve core component and a cut-off component; The valve core assembly comprises a valve stem (11) and a valve core (13), the outer peripheral side of the valve stem (11) is provided with a thread, and the outer peripheral side of the valve stem (11) is also provided with at least two grooves (22); the cut-off assembly comprises a force storage disk (14) rotating in the valve body (10), the force storage disk (14) is fixed to the inner wall of the valve body (10) through a force storage torsion spring (15), a reset rod (16) is also rotatably provided in the valve body (10), an expansion chamber (19) is also provided in the valve body (10), a slider (20) is slidably provided in the expansion chamber (19), an abutment shaft (18) is provided on the slider (20), and the abutment shaft (18) abuts against the reset rod (16).

2. The automatic cut-off water mixing valve according to claim 1, characterized in that: A valve cavity (21) is provided inside the valve body (10), wherein a water inlet and a water outlet are both connected to the valve cavity (21), and the valve core (13) is located in the valve cavity (21), wherein the valve stem (11) is threadedly connected to the valve body (10), and the valve stem (11) passes through the valve body (10) to the outside, and a handle (12) is fixed to the external part of the valve stem (11).

3. The automatic cut-off water mixing valve according to claim 1, characterized in that: The force storage disc (14) is snapped into the groove (22) of the valve stem (11), and a plurality of oblique openings are provided on the end surface of one side of the force storage disc (14) away from the valve core (13).

4. The automatic cut-off water mixing valve according to claim 3, characterized in that: A reset cavity (17) is provided on the outer peripheral side of the valve body (10), and the reset rod (16) rotates in the reset cavity (17). A protruding block is provided at the bottom of the reset rod (16), and the protruding block is abutted against the inclined block. The reset rod (16) passes through the valve body (10) and extends to the outside.

5. The automatic cut-off water mixing valve according to claim 2, characterized in that: The expansion chamber (19) is adjacent to the valve chamber (21), and the expansion chamber (19) is filled with paraffin.

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