Waterway switch valve

Abstract

The utility model provides a waterway switch valve which comprises a valve body, the valve body is provided with a water inlet, a water outlet and a water passing cavity communicated with the water inlet and the water outlet, the waterway switch valve further comprises a motor, the motor comprises an eccentric rotating shaft, and one end of the eccentric rotating shaft extends into the water passing cavity; the valve further comprises an opening and closing valve element assembly arranged in the water passing cavity, the opening and closing valve element assembly comprises a water sealing piece and a spring, a limiting face and a water stopping face are arranged in the water passing cavity, and the water sealing piece comprises a driving rod part, a water blocking part and other structures. The peripheral face, making contact with the water retaining part 312, of the eccentric rotating shaft 21 is in an arc shape, when the eccentric rotating shaft rotates to any angle, the situation that due to the fact that the eccentric rotating shaft has a sharp point, water pressure changes suddenly, use experience is affected, and the performance problems of water attack and the like are not prone to occurring is avoided, and the situation that due to the fact that the eccentric rotating shaft has the sharp point, water pressure changes suddenly is avoided. And the service life is prolonged by reducing the abrasion phenomenon of the driving rod part and the driving rod part as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a water circuit switching valve. Background Technology

[0002] For example, CN119641952A describes an electric thermostatic valve and a shower faucet. The electric thermostatic valve includes a first valve seat, an electric thermostatic valve core, and a temperature sensor. The first valve seat contains a mixing chamber, a first inlet channel, a second inlet channel, and a mixed water outlet channel. The electric thermostatic valve core includes a valve core seat, a motor, and a valve stem. The valve core seat has a valve core inlet, a valve core water chamber, and a valve core outlet. The valve core seat is located on the first valve seat, and the valve core outlet communicates with the mixing chamber. The first inlet channel sequentially passes through the valve core inlet, the valve core water chamber, and communicates with the mixing chamber. The motor is connected to the first end of the valve stem, and the second end of the valve stem has a plug for adjusting the water inlet ratio between the valve core outlet and the outlet of the second inlet channel. The temperature sensor is connected to the first valve seat and extends into the mixed water outlet channel.

[0003] When the valve is opened, water will flow into the mixing chamber and come into contact with the motor for a long time, which will increase the failure rate, reduce the service life, and is not conducive to long-term use by users. The subsequent maintenance costs will also increase. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a water circuit switching valve to solve the problems mentioned in the background section above.

[0005] This utility model is achieved through the following technical solution:

[0006] A water circuit switching valve includes a valve body, the valve body having an inlet, an outlet, and a water passage chamber connecting the inlet and the outlet, and also includes a motor, the motor including an eccentric shaft, one end of the eccentric shaft extending into the water passage chamber;

[0007] It also includes an on / off valve core assembly disposed in the water passage chamber. The on / off valve core assembly includes a water seal and a spring. The water passage chamber is provided with a limiting surface and a water-stopping surface. The water seal includes a driving rod and a water-blocking part. The driving rod passes through the water-stopping surface and abuts against the eccentric rotating shaft. The eccentric rotating shaft is driven by the motor to drive the driving rod to swing, so that the water-blocking part moves between the position of abutting against the water-stopping surface and the position of being misaligned with the water-stopping surface. The spring is disposed between the limiting surface and the rear end face of the water-blocking part, and keeps the water-blocking part abutting against the water-stopping surface. The outer peripheral surface of the eccentric rotating shaft that contacts the water-blocking part is arc-shaped.

[0008] Furthermore, the cross-sections of both the drive rod and the eccentric rotating shaft are circular or nearly circular.

[0009] Furthermore, it also includes a rubber pad, which is embedded in the water passage chamber, and the side end face of the rubber pad forms the water-stopping surface.

[0010] Furthermore, the valve body includes a valve body and a water outlet pipe fitting, the water outlet pipe fitting is detachably connected to the valve body, the internal pipe of the water outlet pipe fitting forms the water outlet, and the internal pipe of the water outlet pipe fitting is provided with the limiting surface arranged radially thereon.

[0011] Furthermore, the water seal also includes a guide portion, with one end of the spring sleeved on the outer periphery of the guide portion.

[0012] Furthermore, it also includes a Hall sensor disposed on the side of the eccentric shaft, in which a magnet is embedded. When the Hall sensor detects the N pole or S pole of the magnet, it controls the motor to stop working.

[0013] Furthermore, the axis of the magnet is arranged collinearly or perpendicularly to the eccentric direction of the eccentric rotating shaft.

[0014] Furthermore, the side wall of the water passage chamber is provided with a plurality of circumferentially arrayed protrusions, and the water-blocking part abuts against the inner circumferential surface of the protrusions.

[0015] Furthermore, the motor also includes a housing, one end of the eccentric shaft is provided with a gear portion, the other end of the eccentric shaft is provided with an eccentric rod portion, the housing is provided with a guide portion for the gear portion to pass through, and a sealing ring is fitted around the outer periphery of the eccentric shaft, one end of the sealing ring abuts against the valve body, and the other end of the sealing ring abuts against the guide portion.

[0016] The beneficial effects of this utility model are as follows: A water circuit switching valve includes a valve body, which has an inlet, an outlet, and a water passage chamber connecting the inlet and the outlet. It also includes a motor, which includes an eccentric shaft, one end of which extends into the water passage chamber. Furthermore, it includes an opening / closing valve core assembly disposed in the water passage chamber, which includes a water seal and a spring. The water passage chamber has a limiting surface and a water-stopping surface. The water seal includes a driving rod and a water-blocking part, the driving rod passing through the water-stopping surface and abutting against the eccentric shaft. The eccentric shaft, driven by the motor, causes the drive rod to swing, moving the water-blocking part between positions abutting and offset from the water-stopping surface. A spring is positioned between the limiting surface and the rear end face of the water-blocking part, ensuring the water-blocking part remains abutting the water-stopping surface. The outer circumferential surface of the eccentric shaft in contact with the water-blocking part is arc-shaped. The opening and closing of the water circuit valve are achieved through the rotation of the eccentric shaft, preventing its back-and-forth movement and the risk of water contact with the motor, thus offering advantages of high safety and long service life. Furthermore, the arc-shaped outer circumferential surface of the eccentric shaft in contact with the water-blocking part prevents sudden changes in water pressure due to the sharp point of the eccentric shaft when rotating to any angle, thus minimizing water hammer and other performance issues. It also prevents excessive friction between the eccentric shaft and the drive rod due to the sharp point, further reducing wear and extending service life. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is an exploded view of the present invention.

[0019] Figure 3 This is a centered sectional view of the water circuit switch valve in the open position.

[0020] Figure 4 This is a schematic diagram showing the changes in the water seal when the water circuit switch valve is in the open and closed states.

[0021] Figure 5 This is a three-dimensional view of the valve body.

[0022] Figure 6 This is an exploded view of the motor.

[0023] The above figures include the following reference numerals:

[0024] 1. Valve body; 11. Water passage chamber; 111. Boss; 12. Inlet; 13. Outlet; 14. Valve body; 15. Inlet fitting; 16. Outlet fitting; 161. Limiting surface; 162. Water passage hole; 2. Motor; 21. Eccentric shaft; 211. Mounting hole; 212. Gear section; 22. Housing; 221. Guide section; 23. Sealing ring; 3. Valve core assembly; 31. Water seal; 311. Drive rod section; 312. Water baffle section; 313. Guide section; 32. Spring; 4. Rubber pad; 41. Water stop surface; 5. Hall sensor; 6. Rear end cover. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Reference Figures 1 to 6 As shown, a water circuit switching valve includes a valve body 1, the valve body 1 having an inlet 12, an outlet 13, and a water passage chamber 11 connecting the inlet 12 and the outlet 13, and also includes a motor 2, the motor 2 including an eccentric rotating shaft 21, one end of the eccentric rotating shaft 21 extending into the water passage chamber 11;

[0027] It also includes an on / off valve core assembly 3 disposed in the water passage chamber 11. The on / off valve core assembly 3 includes a water seal 31 and a spring 32. The water passage chamber 11 is provided with a limiting surface 161 and a water-stopping surface 41. The water seal 31 includes a driving rod 311 and a water-blocking part 312. The driving rod 311 passes through the water-stopping surface 41 and abuts against the eccentric rotating shaft 21. The eccentric rotating shaft 21 is driven by the motor 2 to drive the driving rod 311 to swing, so that the water-blocking part 312 moves between the position abutting against the water-stopping surface 41 and the position of being misaligned with the water-stopping surface 41. The spring 32 is disposed between the limiting surface 161 and the rear end face of the water-blocking part 312, and keeps the water-blocking part 312 abutting against the water-stopping surface 41. The outer peripheral surface of the eccentric rotating shaft 21 that contacts the water-blocking part 312 is arc-shaped.

[0028] Reference Figures 3 to 5As shown, in use, the eccentric rotating shaft 21 drives the drive rod 311 to swing up and down, causing the water-blocking part 312 to move between the position of abutting the water-stopping surface 41 and the position of being misaligned with the water-stopping surface 41. When the water-blocking part 312 abuts the water-stopping surface 41, the water circuit switch valve of this utility model is in the closed state; when the water-blocking part 312 is misaligned with the water-stopping surface 41, the water circuit switch valve of this utility model is in the open state, and the water flows out sequentially through the inlet 12, the water passage chamber 11 and the outlet 13.

[0029] The outer peripheral surface of the eccentric rotating shaft 21 that contacts the water-blocking part 312 is arc-shaped. When the eccentric rotating shaft 21 rotates to any angle, the water flow will not experience sudden changes in water pressure due to the sharp point of the eccentric rotating shaft 21, which would affect the user experience and reduce the likelihood of water hammer and other performance problems. Furthermore, the sharp point of the eccentric rotating shaft 21 will not cause significant friction with the drive rod part 311, thereby minimizing wear and tear on both and improving service life.

[0030] Reference Figures 3 to 5 As shown, the cross-sections of the drive rod 311 and the eccentric shaft 21 are both circular or nearly circular, thereby avoiding sharp corners between the drive rod 311 and the eccentric shaft 21 that could easily damage their mating parts.

[0031] It also includes a rubber pad 4, which is embedded in the water passage chamber 11. The side end face of the rubber pad 4 forms the water-stopping surface 41. The rubber pad 4 can improve the water-stopping effect and prevent water from seeping through the contact between the water-stopping surface 41 and the water-blocking part 312 when the water circuit switch valve of this utility model is in the closed state. Preferably, the two side end faces of the rubber pad 4 are provided with a plurality of concentrically arranged protruding rings. The deformation of the protruding rings can further improve the water-stopping effect.

[0032] The valve body 1 includes a valve body 14, an inlet pipe 15, and an outlet pipe 16. The inlet pipe 15 and the outlet pipe 16 are detachably connected to the valve body 14 by screws. The internal pipe of the inlet pipe 15 forms the inlet 12, and the internal pipe of the outlet pipe 16 forms the outlet 13. The internal pipe of the outlet pipe 16 is provided with a limiting surface 161 arranged radially therein, and a water passage hole 162 penetrating the limiting surface 161. This detachable assembly structure facilitates the assembly of components such as the spring 32 and the water seal 31.

[0033] The water seal 31 also includes a guide portion 313. One end of the spring 32 is sleeved on the outer periphery of the guide portion 313. The guide portion 313 can prevent the spring 32 from disengaging from its working position during the swinging process of the water seal 31, thus preventing it from properly resetting and causing the water-blocking portion 312 to abut against the water-stopping surface 41.

[0034] It also includes a Hall sensor 5 disposed on the side of the eccentric rotating shaft 21. A magnet is embedded in the eccentric rotating shaft 21, and the eccentric rotating shaft 21 is provided with a mounting hole 211 for mounting the magnet. When the Hall sensor 5 detects the N pole or S pole of the magnet, it controls the motor 2 to stop working.

[0035] In use, when the user places their hand near the sensing area, such as a faucet, the eccentric shaft of motor 2 begins to rotate. During rotation, when Hall sensor 5 senses the N or S pole of the magnet, motor 2 stops rotating, and the water circuit switch valve of this invention is in the open state. After the user washes their hands and removes them, the eccentric shaft of motor 2 resumes rotation. When Hall sensor 5 reaches the other pole (S or N), motor 2 stops again, and the water circuit switch valve of this invention is in the closed state, stopping the water flow from the faucet. The open or closed state of the water circuit switch valve can be determined by the interaction of Hall sensor 5 and the magnet.

[0036] Reference Figure 2 As shown, the axis of the magnet is arranged collinearly or perpendicularly to the eccentric direction of the eccentric rotating shaft 21, so that the angle between the water-blocking part 312 and the water-stopping surface 41 can be maximized by driving through the eccentric shaft, thereby increasing the water flow rate when the water circuit switch valve is in the open state.

[0037] Reference Figure 5 As shown, the side wall of the water passage chamber 11 is provided with a plurality of circumferentially arrayed protrusions 111. The water-blocking part 312 abuts against the inner circumferential surface of the protrusions 111. When the water circuit switch valve is in the open position, the water flows out along the gap between the two protrusions 111, thereby increasing the outflow rate when the water circuit switch valve is in the open position.

[0038] Reference Figure 2 and Figure 6 As shown, the motor 2 also includes a housing 22. One end of the eccentric shaft 21 is provided with a gear portion 212, and the other end of the eccentric shaft 21 is provided with an eccentric rod portion. The housing 22 is provided with a conduit portion 221 through which the gear portion 212 passes. A sealing ring 23 is fitted around the outer periphery of the eccentric shaft 21. One end of the sealing ring 23 abuts against the valve body 1, and the other end of the sealing ring 23 abuts against the conduit portion 221. Through the above structure, especially the setting of the sealing ring 23, water flow can be prevented from penetrating to the connection between the conduit portion 221 and the eccentric shaft 21, preventing damage to the motor 2 and increasing the service life of the motor 2.

[0039] It also includes a rear end cover 6, which is connected to the valve body 1 by screws. The motor 2 is disposed between the rear end cover 6 and the valve body 1, and the motor 2 is protected by the rear end cover 6 and the valve body 1.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are 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 are not intended to 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.

[0041] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water circuit switching valve, comprising a valve body (1), wherein the valve body (1) is provided with an inlet (12), an outlet (13), and a water passage chamber (11) connecting the inlet (12) and the outlet (13), characterized in that: It also includes a motor (2), which includes an eccentric shaft (21), one end of which extends into the water passage chamber (11); It also includes an opening and closing valve core assembly (3) disposed in the water passage chamber (11). The opening and closing valve core assembly (3) includes a water seal (31) and a spring (32). The water passage chamber (11) is provided with a limiting surface (161) and a water-stopping surface (41). The water seal (31) includes a driving rod (311) and a water-blocking part (312). The driving rod (311) passes through the water-stopping surface (41) and abuts against the eccentric rotating shaft (21). It is driven by the motor (2). The eccentric rotating shaft (21) drives the driving rod (311) to swing, causing the water-blocking part (312) to move between the position of abutting the water-stopping surface (41) and the position of misaligning with the water-stopping surface (41). The spring (32) is disposed between the limiting surface (161) and the rear end face of the water-blocking part (312), and keeps the water-blocking part (312) abutting the water-stopping surface (41). The outer peripheral surface of the eccentric rotating shaft (21) that contacts the water-blocking part (312) is arc-shaped.

2. A water circuit switching valve according to claim 1, characterized in that: The cross-sections of the drive rod (311) and the eccentric rotating shaft (21) are both circular or nearly circular.

3. A water circuit switching valve according to claim 1, characterized in that: It also includes a rubber pad (4), which is embedded in the water passage chamber (11), and the side end face of the rubber pad (4) forms the water-stopping surface (41).

4. A water circuit switching valve according to claim 1, characterized in that: The valve body (1) includes a valve body (14) and a water outlet pipe (16). The water outlet pipe (16) is detachably connected to the valve body (14). The internal pipe of the water outlet pipe (16) forms the water outlet (13). The internal pipe of the water outlet pipe (16) is provided with the limiting surface (161) arranged radially thereon.

5. A water circuit switching valve according to claim 1, characterized in that: The water seal (31) also includes a guide (313), and one end of the spring (32) is sleeved on the outer periphery of the guide (313).

6. A water circuit switching valve according to any one of claims 1 to 5, characterized in that: It also includes a Hall sensor (5) disposed on the side of the eccentric rotating shaft (21), in which a magnet is embedded. When the Hall sensor (5) detects the N pole or S pole of the magnet, it controls the motor (2) to stop working.

7. A water circuit switching valve according to claim 6, characterized in that: The axis of the magnet is arranged collinearly or perpendicularly to the eccentric direction of the eccentric rotating shaft (21).

8. A water circuit switching valve according to any one of claims 1 to 5, characterized in that: The side wall of the water passage chamber (11) is provided with a plurality of circumferentially arrayed bosses (111), and the water-blocking part (312) abuts against the inner circumferential surface of the bosses (111).

9. A water circuit switching valve according to any one of claims 1 to 5, characterized in that: The motor (2) also includes a housing (22). One end of the eccentric shaft (21) is provided with a gear part (212), and the other end of the eccentric shaft (21) is provided with an eccentric rod part. The housing (22) is provided with a guide part (221) through which the gear part (212) passes. A sealing ring (23) is fitted around the outer periphery of the eccentric shaft (21). One end of the sealing ring (23) abuts against the valve body (1), and the other end of the sealing ring (23) abuts against the guide part (221).

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