A water inlet valve with convenient height adjustment

Abstract

The utility model discloses a kind of water inlet valves of height is adjusted easily, including water inlet pipe, valve body assembly and adjusting device, valve body assembly is installed in water inlet pipe liftable;Adjusting device includes adjusting lever, adjusting wheel, adjusting lever is rotatably installed in valve body assembly, adjusting wheel is rotatably installed in valve body assembly, adjusting wheel is sleeved in water inlet pipe, adjusting wheel and water inlet pipe are driven by thread transmission cooperation, adjusting lever and adjusting wheel transmission cooperation, adjusting lever can drive adjusting wheel relatively water inlet pipe rotation, to make adjusting wheel drive valve body assembly relatively water inlet pipe lift.The water inlet valve provided by the utility model can continuously adjust the height position of valve body assembly steplessly, and is convenient, simple to adjust.

Description

Technical Field

[0001] This utility model relates to water inlet valves, and more particularly to a water inlet valve with convenient height adjustment. Background Technology

[0002] The inlet valve is a device that controls the automatic water intake of a toilet tank. Some existing inlet valves, in order to adjust the height of the valve body assembly according to the height of the tank, have a locking block on the valve body assembly and multiple locking slots on the inlet pipe that mate with the locking block. However, this type of inlet valve requires rotating the valve body assembly to disengage the locking block from the locking slot, then raising or lowering the valve body assembly, and finally reselecting the valve body assembly to allow the locking block to enter another locking slot to achieve height adjustment. This is inconvenient, and relying on the locking block and locking slots for positioning does not allow for stepless, continuous adjustment of the valve body assembly's height. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a water inlet valve with easily adjustable height, capable of stepless continuous adjustment of the height position of the valve body assembly, and the adjustment is convenient and simple.

[0004] A height-adjustable water inlet valve according to an embodiment of the present invention includes an inlet pipe, a valve body assembly, and an adjusting device. The valve body assembly is vertically and flexibly mounted on the inlet pipe. The adjusting device includes an adjusting rod and an adjusting wheel. The adjusting rod is rotatably mounted on the valve body assembly, and the adjusting wheel is rotatably mounted on the valve body assembly. The adjusting wheel is sleeved on the inlet pipe, and the adjusting wheel and the inlet pipe are connected by a threaded drive. The adjusting rod and the adjusting wheel are connected by a drive mechanism. The adjusting rod can drive the adjusting wheel to rotate relative to the inlet pipe, so that the adjusting wheel drives the valve body assembly to rise and fall relative to the inlet pipe.

[0005] According to an embodiment of the present invention, a water inlet valve that is convenient for adjusting height has at least the following beneficial effects: When it is necessary to adjust the height position of the valve body assembly, the water inlet valve provided by the present invention only needs to rotate the adjusting rod to make the adjusting wheel rotate relative to the water inlet pipe, thereby driving the valve body assembly to rise and fall, thereby realizing the adjustment of the height position of the valve body assembly. The adjustment is convenient and simple, and the threaded transmission between the adjusting wheel and the water inlet pipe can also continuously adjust the height position of the valve body assembly steplessly.

[0006] According to some embodiments of the present invention, the upper end of the adjusting rod is close to the upper end of the valve body assembly, and a transmission gear is installed at the lower end of the adjusting rod. The transmission gear meshes with the adjusting wheel, and the number of teeth of the transmission gear is less than the number of teeth of the adjusting wheel.

[0007] According to some embodiments of this utility model, the upper end of the valve body assembly is provided with a mounting hole, the adjusting rod is rotatably inserted through the mounting hole, the lower end of the valve body assembly is sleeved on the water inlet pipe, the lower end of the valve body assembly is provided with a mounting cavity, the adjusting wheel is rotatably installed in the mounting cavity, the mounting cavity has an opening in the radial direction, the opening is used for the adjusting wheel to enter and exit the mounting cavity, the lower end of the adjusting rod passes through the lower side wall of the opening, the lower end of the adjusting rod is installed with a limiting member, the limiting member is located on the lower side of the lower side wall of the opening, and the transmission gear is located in the opening.

[0008] According to some embodiments of the present invention, the adjusting rod includes a first rod and a second rod. The first rod is rotatably mounted on the valve body assembly and drives the adjusting wheel. The second rod is slidably inserted into the first rod, and the second rod can drive the first rod to rotate synchronously. A first limiting structure is provided on the second rod, and a second limiting structure is provided on the valve body assembly. The second limiting structure is used to engage with the first limiting structure to restrict the rotation of the second rod. The second limiting structure and the first limiting structure can engage or disengage with each other by sliding and extending the second rod relative to the first rod.

[0009] According to some embodiments of the present invention, the first limiting structure is configured as a limiting gear, and the second limiting structure is configured as a limiting tooth groove. By sliding and extending the second rod relative to the first rod, the teeth of the limiting gear can disengage from or insert into the limiting tooth groove.

[0010] According to some embodiments of the present invention, a third limiting structure is provided between the first rod and the second rod, the third limiting structure being used to limit the range of sliding extension and retraction of the first rod relative to the second rod.

[0011] According to some embodiments of the present invention, the second rod is inserted at the upper end of the first rod, and two clearance grooves are provided circumferentially on the outer wall of the first rod. The third limiting structure includes two stop holes and a limiting post. The two stop holes are arranged along the axial direction of the first rod on the outer wall of the first rod, and a strip-shaped limiting groove is connected between the two stop holes. The strip-shaped limiting groove is located between the two clearance grooves. The limiting post is disposed on the second rod and inserted into one of the stop holes. The opposite side walls of the strip-shaped limiting groove are elastic, and the distance between the opposite side walls of the strip-shaped limiting groove is smaller than that of the limiting post. The limiting post can move and switch between the two stop holes along the strip-shaped limiting groove.

[0012] According to some embodiments of the present invention, the upper end of the adjusting rod is provided with a knob portion, and when the second rod extends upward relative to the first rod, the knob portion protrudes from the upper end of the valve body assembly.

[0013] According to some embodiments of the present invention, the adjusting rod is provided with a plurality of actuating parts in the circumferential direction, and the valve body assembly is provided with a spring piece for cooperating with the actuating parts. During the rotation of the adjusting rod, the spring piece can automatically move in and out of any one of the actuating parts.

[0014] According to some embodiments of the present invention, the valve body assembly includes a housing, a switching valve, and a floating device. The lower end of the housing is movably fitted onto the inlet pipe. The switching valve is installed on the housing. The floating device is movably installed on the housing. The floating device is pulsatorically connected to the switching valve to control the opening and closing of the switching valve. The adjusting rod and the adjusting wheel are rotatably installed on the housing. The input pipe of the switching valve is movably inserted into the inlet pipe, and the inlet channel in the inlet pipe communicates with the input pipe of the switching valve. A sliding guide structure is provided between the input pipe of the switching valve and the inlet pipe.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a cross-sectional view of a height-adjustable water inlet valve (when the second rod of the adjusting rod is retracted) according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of a water inlet valve that allows for easy height adjustment is shown.

[0019] Figure 3 for Figure 1 A schematic diagram of an adjusting rod for a water inlet valve that allows for convenient height adjustment is shown.

[0020] Figure 4 for Figure 1 A schematic diagram of the upper interior of the valve body assembly of a water inlet valve that allows for easy height adjustment is shown.

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6This is a schematic diagram of the upper interior of a water inlet valve with convenient height adjustment according to an embodiment of the present invention (when the second member of the adjusting rod is extended);

[0023] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0024] Figure label:

[0025] Water inlet pipe 100, water inlet channel 110, valve body assembly 200, outer shell 210, mounting hole 211, mounting cavity 212, opening 213, switch valve 220, input pipe 221, limit tooth groove 222, spring piece 223, floating device 230, adjusting rod 310, first rod 311, stop hole 3111, strip-shaped limit groove 3112, clearance groove 3113, second rod 312, limit gear 3121, limit post 3122, toggle part 3123, knob part 313, limit member 320, adjusting wheel 330, transmission gear 340. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, a height-adjustable inlet valve includes an inlet pipe 100, a valve body assembly 200, and an adjusting device. The valve body assembly 200 is vertically and flexibly mounted on the inlet pipe 100. The adjusting device includes an adjusting rod 310 and an adjusting wheel 330. The adjusting rod 310 is rotatably mounted on the valve body assembly 200, and the adjusting wheel 330 is rotatably mounted on the valve body assembly 200. The adjusting wheel 330 is sleeved on the inlet pipe 100, and the adjusting wheel 330 and the inlet pipe 100 are connected by a threaded transmission. The adjusting rod 310 and the adjusting wheel 330 are connected by a transmission. The adjusting rod 310 can drive the adjusting wheel 330 to rotate relative to the inlet pipe 100, so that the adjusting wheel 330 drives the valve body assembly 200 to rise and fall relative to the inlet pipe 100.

[0031] The water inlet valve provided by this utility model allows for easy and simple adjustment of the height of the valve body assembly 200 when the height position of the valve body assembly 200 needs to be adjusted. Simply rotate the adjusting rod 310 to make the adjusting wheel 330 rotate relative to the water inlet pipe 100, thereby driving the valve body assembly 200 to rise and fall. The threaded transmission between the adjusting wheel 330 and the water inlet pipe 100 also enables stepless and continuous adjustment of the height position of the valve body assembly 200.

[0032] Reference Figure 1 and Figure 2 According to some embodiments of this utility model, the upper end of the adjusting rod 310 is close to the upper end of the valve body assembly 200, and a transmission gear 340 is installed at the lower end of the adjusting rod 310. The transmission gear 340 meshes with the adjusting wheel 330 for transmission. Therefore, the adjusting rod 310 can be rotated from the top of the inlet valve for convenient operation. The number of teeth in the transmission gear 340 is less than the number of teeth in the adjusting wheel 330. The transmission gear 340 and the adjusting wheel 330 can amplify the force, and the threaded transmission between the adjusting wheel 330 and the inlet pipe 100 can also amplify the force. This reduces the force required to rotate the adjusting rod 310, making it easier to adjust the height of the valve body assembly 200. Simultaneously, large-angle rotations of the adjusting rod 310 can be converted into small displacements of the adjusting wheel 330, thereby improving adjustment accuracy.

[0033] Reference Figure 1 and Figure 2According to some embodiments of the present invention, the upper end of the valve body assembly 200 is provided with a mounting hole 211, the adjusting rod 310 is rotatably inserted through the mounting hole 211, the lower end of the valve body assembly 200 is sleeved on the water inlet pipe 100, the lower end of the valve body assembly 200 is provided with a mounting cavity 212, the adjusting wheel 330 is rotatably installed in the mounting cavity 212, the mounting cavity 212 is radially provided with an opening 213, the opening 213 is used for the adjusting wheel 330 to enter and exit the mounting cavity 212, the lower end of the adjusting rod 310 is inserted through the lower side wall of the opening 213, the lower end of the adjusting rod 310 is installed with a limiting member 320, the limiting member 320 is located on the lower side of the lower side wall of the opening 213 to restrict the adjusting rod 310 from leaving the mounting hole 211, and the transmission gear 340 is located in the opening 213. Therefore, during the assembly process, the adjusting wheel 330 can be installed into the mounting cavity 212 through the opening 213, then the transmission gear 340 can be placed in the opening 213, then the adjusting rod 310 can be inserted into the mounting hole 211 and pass through the transmission gear 340 and the lower side wall of the opening 213, and finally the limiting member 320 can be installed on the adjusting rod 310, thus completing the assembly of the adjusting device. The assembly of the adjusting device is simple and convenient.

[0034] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, the adjusting rod 310 includes a first rod 311 and a second rod 312. The first rod 311 is rotatably mounted on the valve body assembly 200 and is in transmission cooperation with the adjusting wheel 330. The second rod 312 is slidably inserted into the first rod 311, and the second rod 312 can drive the first rod 311 to rotate synchronously. A first limiting structure is provided on the second rod 312, and a second limiting structure is provided on the valve body assembly 200. The second limiting structure is used to engage with the first limiting structure to restrict the rotation of the second rod 312. The second limiting structure and the first limiting structure can engage or disengage with each other by sliding and extending the second rod 312 relative to the first rod 311.

[0035] Reference Figure 4 and Figure 5 After adjusting the height of the valve body assembly 200, the second lever 312 can be slid to engage the second limiting structure with the first limiting structure, thereby locking the adjusting lever 310 and preventing accidental rotation of the adjusting lever 310. (Refer to...) Figure 6 and Figure 7 When it is necessary to adjust the height of the valve body assembly 200, the second rod 312 can be slid to disengage the second limiting structure from the first limiting structure, thereby allowing the adjusting rod 310 to rotate.

[0036] Reference Figures 4 to 7According to some embodiments of the present invention, the first limiting structure is set as a limiting gear 3121, and the second limiting structure is set as a limiting tooth groove 222. By sliding and extending the second rod 312 relative to the first rod 311, the teeth of the limiting gear 3121 can disengage from or insert into the limiting tooth groove 222. Thus, the locking adjustment rod 310 can be achieved by the interaction between the teeth of the limiting gear 3121 and the limiting tooth groove 222.

[0037] In other embodiments, the first limiting structure and the second limiting structure can also be configured in other ways. For example, the second limiting structure can be set as a spring ball, and the first limiting structure can be set as a plurality of slots circumferentially arranged on the second rod 312. By extending and retracting the second rod 312, the slots can be moved up and down to a position opposite to the spring ball or away from the spring ball. When the slot moves to a position opposite to the spring ball, the spring ball can automatically extend and be inserted into the slot, increasing the resistance to the rotation of the second rod 312, thereby limiting the rotation of the second rod 312.

[0038] Reference Figure 3 According to some embodiments of the present invention, a third limiting structure is provided between the first rod 311 and the second rod 312. The third limiting structure is used to limit the range of sliding extension and retraction of the first rod 311 relative to the second rod 312, so as to prevent the second rod 312 from detaching from the first rod 311.

[0039] Reference Figure 3 According to some embodiments of the present invention, the second rod 312 is inserted into the upper end of the first rod 311. Two clearance grooves 3113 are circumferentially arranged on the outer wall of the first rod 311. The third limiting structure includes two stop holes 3111 and a limiting post 3122. The two stop holes 3111 are arranged along the axial direction of the first rod 311 on the outer wall of the first rod 311. A strip-shaped limiting groove 3112 communicates between the two stop holes 3111 and is located between the two clearance grooves 3113. The limiting post 3122 is disposed on the second rod 312. It is inserted into one of the gear holes 3111. The opposite side walls of the strip-shaped limiting groove 3112 are elastic and the distance between the opposite side walls of the strip-shaped limiting groove 3112 is smaller than that between the limiting post 3122. The limiting post 3122 can move and switch between the two gear holes 3111 along the strip-shaped limiting groove 3112. Thus, the sliding range of the second rod 312 relative to the first rod 311 can be limited. Through the cooperation of the limiting post 3122 and the two gear holes 3111, the second rod 312 can stay at the maximum extension position and the minimum retraction position.

[0040] Reference Figure 1 and Figure 3According to some embodiments of the present invention, the upper end of the adjusting rod 310 is provided with a knob part 313. When the second rod 312 extends upward relative to the first rod 311, the knob part 313 protrudes from the upper end of the valve body assembly 200. With the above arrangement, it is convenient for people to rotate the adjusting rod 310.

[0041] Reference Figure 3 and Figure 7 According to some embodiments of the present invention, the adjusting rod 310 is provided with a plurality of actuating parts 3123 in the circumferential direction, and the valve body assembly 200 is provided with a spring piece 223 for cooperating with the actuating parts 3123. During the rotation of the adjusting rod 310, the spring piece 223 can automatically contact and collide with any one of the actuating parts 3123 to produce a sound indicating that the adjusting rod 310 is rotating, while also increasing the feel.

[0042] Reference Figure 1 and Figure 4 According to some embodiments of the present invention, the valve body assembly 200 includes a housing 210, a switching valve 220, and a floating device 230. The lower end of the housing 210 is movably sleeved on the water inlet pipe 100. The switching valve 220 is installed on the housing 210. The floating device 230 is movably installed on the housing 210. The floating device 230 is connected to the switching valve 220 to control the opening and closing of the switching valve 220. The adjusting rod 310 and the adjusting wheel 330 are rotatably installed on the housing 210. The input pipe 221 of the switching valve 220 is movably inserted into the water inlet pipe 100. The water inlet channel 110 in the water inlet pipe 100 is connected to the input pipe 221 of the switching valve 220. A sliding guide structure is provided between the input pipe 221 of the switching valve 220 and the water inlet pipe 100 to limit the rotation of the valve body assembly 200 relative to the water inlet pipe 100. Since the on / off valve 220 and the floating device 230 of the valve body assembly 200 are integrated and installed in the housing 210, the entire inlet valve can have a smaller volume.

[0043] When the aforementioned inlet valve is applied to a toilet tank, if the water level in the tank is lower than the floating device 230, the floating device 230 will automatically descend under its own weight, thereby opening the switch valve 220. At this time, tap water can flow from the inlet pipe 100 into the input pipe 221 and then through the switch valve 220 into the tank. When the water level in the tank rises to a certain height, the floating device 230 will also rise to a certain height along with the water level, thereby closing the switch valve 220. At this time, tap water cannot flow into the tank through the switch valve 220.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A water inlet valve with easily adjustable height, characterized in that, include: Water inlet pipe (100); The valve body assembly (200) is vertically mounted on the inlet pipe (100); The adjusting device includes an adjusting rod (310) and an adjusting wheel (330). The adjusting rod (310) is rotatably mounted on the valve body assembly (200), and the adjusting wheel (330) is rotatably mounted on the valve body assembly (200). The adjusting wheel (330) is sleeved on the water inlet pipe (100). The adjusting wheel (330) and the water inlet pipe (100) are connected by a threaded drive. The adjusting rod (310) and the adjusting wheel (330) are connected by a drive mechanism. The adjusting rod (310) can drive the adjusting wheel (330) to rotate relative to the water inlet pipe (100), so that the adjusting wheel (330) drives the valve body assembly (200) to rise and fall relative to the water inlet pipe (100).

2. The water inlet valve with convenient height adjustment according to claim 1, characterized in that, The upper end of the adjusting rod (310) is close to the upper end of the valve body assembly (200), and a transmission gear (340) is installed at the lower end of the adjusting rod (310). The transmission gear (340) meshes with the adjusting wheel (330) for transmission. The number of teeth of the transmission gear (340) is less than the number of teeth of the adjusting wheel (330).

3. The water inlet valve with convenient height adjustment according to claim 2, characterized in that, The upper end of the valve body assembly (200) is provided with a mounting hole (211), the adjusting rod (310) is rotatably inserted through the mounting hole (211), the lower end of the valve body assembly (200) is sleeved on the water inlet pipe (100), the lower end of the valve body assembly (200) is provided with a mounting cavity (212), the adjusting wheel (330) is rotatably installed in the mounting cavity (212), the mounting cavity (212) has an opening (213) in the radial direction, the opening (213) is used for the adjusting wheel (330) to enter and exit the mounting cavity (212), the lower end of the adjusting rod (310) is inserted through the lower side wall of the opening (213), the lower end of the adjusting rod (310) is installed with a limiting member (320), the limiting member (320) is located on the lower side of the lower side wall of the opening (213), and the transmission gear (340) is located in the opening (213).

4. The water inlet valve with convenient height adjustment according to claim 1, characterized in that, The adjusting rod (310) includes a first rod (311) and a second rod (312). The first rod (311) is rotatably mounted on the valve body assembly (200) and drives the adjusting wheel (330). The second rod (312) is slidably inserted into the first rod (311), and the second rod (312) can drive the first rod (311) to rotate synchronously. The second rod (312) is provided with a first limiting structure, and the valve body assembly (200) is provided with a second limiting structure. The second limiting structure is used to engage with the first limiting structure to restrict the rotation of the second rod (312). The second limiting structure and the first limiting structure can engage or disengage with each other by sliding and extending the second rod (312) relative to the first rod (311).

5. A water inlet valve with convenient height adjustment according to claim 4, characterized in that, The first limiting structure is a limiting gear (3121), and the second limiting structure is a limiting tooth groove (222). By sliding and extending the second rod (312) relative to the first rod (311), the teeth of the limiting gear (3121) can disengage from or insert into the limiting tooth groove (222).

6. A water inlet valve with convenient height adjustment according to claim 4, characterized in that, A third limiting structure is provided between the first rod (311) and the second rod (312), the third limiting structure being used to limit the range of sliding extension and retraction of the first rod (311) relative to the second rod (312).

7. A water inlet valve with convenient height adjustment according to claim 6, characterized in that, The second rod (312) is inserted into the upper end of the first rod (311). Two clearance grooves (3113) are circumferentially provided on the outer wall of the first rod (311). The third limiting structure includes two stop holes (3111) and a limiting post (3122). The two stop holes (3111) are arranged along the axial direction of the first rod (311) on the outer wall of the first rod (311). A strip-shaped limiting groove (3112) communicates between the two stop holes (3111). 2) Located between the two clearance grooves (3113), the limiting post (3122) is disposed on the second rod (312) and inserted into one of the gear holes (3111). The opposite side walls of the strip-shaped limiting groove (3112) are elastic and the distance between the opposite side walls of the strip-shaped limiting groove (3112) is smaller than that of the limiting post (3122). The limiting post (3122) can move and switch between the two gear holes (3111) along the strip-shaped limiting groove (3112).

8. A water inlet valve with convenient height adjustment according to claim 4, characterized in that, The upper end of the second rod (312) is provided with a knob (313). When the second rod (312) extends upward relative to the first rod (311), the knob (313) protrudes from the upper end of the valve body assembly (200).

9. A water inlet valve with convenient height adjustment according to claim 1, characterized in that, The adjusting rod (310) is provided with a plurality of actuating parts (3123) in a circumferential direction, and the valve body assembly (200) is provided with a spring piece (223) for cooperating with the actuating parts (3123).

10. A water inlet valve with convenient height adjustment according to claim 1, characterized in that, The valve body assembly (200) includes a housing (210), a switching valve (220), and a floating device (230). The lower end of the housing (210) is movably fitted onto the inlet pipe (100). The switching valve (220) is mounted on the housing (210). The floating device (230) is movably mounted on the housing (210). The floating device (230) is kinetically connected to the switching valve (220) to control the opening and closing of the switching valve (220). The adjusting rod (310) and the adjusting wheel (330) are rotatably mounted on the outer casing (210). The input pipe (221) of the switch valve (220) is vertically inserted into the water inlet pipe (100), and the water inlet channel (110) in the water inlet pipe (100) is connected to the input pipe (221) of the switch valve (220). A sliding guide structure is provided between the input pipe (221) of the switch valve (220) and the water inlet pipe (100).

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