Hydraulic waterway switching structure

Abstract

The utility model discloses a hydraulic waterway switching structure, utilize high pressure spring to promote high pressure valve core axial to first direction remove from inside close valve bush inner chamber to cut off the intercommunication between water inlet channel and high pressure outlet channel, utilize low pressure spring to promote low pressure valve core axial to first direction remove from inside open high pressure valve core's water passageway to intercommunication water inlet channel and low pressure outlet channel, and the compression of high pressure spring must be compressed to low pressure spring as the prerequisite, and the hydraulic waterway switching structure has the advantages that high pressure outlet channel and low pressure outlet channel prevent water from flowing out simultaneously, and the working water pressure of water outlet waterway is stable.

Description

Technical Field

[0001] This utility model relates to a water circuit switching structure and switching method, and in particular to a hydraulic water circuit switching structure and switching method, specifically to a hydraulic water circuit switching structure and switching method applied to a smart toilet body washer. Background Technology

[0002] There are two main types of methods for achieving fully automatic water circuit switching: electromagnetic automatic switching and hydraulic automatic switching. Electromagnetic automatic switching, for example, is controlled by solenoid valves. Its advantages are precise control and prevention of crossflow between different water outlets. Its disadvantages are complex electronic components, high cost, and high overall complexity. Hydraulic automatic switching is undoubtedly cheaper, but its disadvantages are also obvious: poor control precision. For example, during water circuit switching, the second water outlet often opens before the first outlet is fully closed, causing crossflow and affecting the water pressure in the outlet circuit. Although some hydraulic automatic switching methods can change the position of the outlet channel so that only one outlet channel can be opened during piston movement, the continuous friction between the piston and the stationary seal during piston movement inevitably damages the sealing structure at the outlet channel. Easily damaged seals cause leaks in outlet channels that should be closed, thus failing to effectively solve the problems of crossflow and unstable outlet pressure.

[0003] In summary, the hydraulic automatic switching structure can only be applied to situations where sealing requirements are not high, such as flushing the brush ring and sewage pipe of a toilet. However, in the field of smart toilets, the bidet function requires stable water pressure in the bidet mode and the self-cleaning water circuit must be completely shut off before starting the bidet function. Therefore, existing bidets in the field of smart toilets can only use electromagnetic methods to achieve water circuit switching. Utility Model Content

[0004] This utility model provides a hydraulic water circuit switching structure to prevent crossflow between different water circuits and ensure stable outlet water pressure, thereby improving control accuracy. The technical solution adopted by this utility model to solve its technical problem is as follows:

[0005] A hydraulic water circuit switching structure includes an inlet channel, a high-pressure outlet channel, and a low-pressure outlet channel. It also includes a valve sleeve and a high-pressure valve core axially slidably disposed within the inner cavity of the valve sleeve for opening or closing the inner cavity. The high-pressure valve core has a water passage in its center. The structure also includes a low-pressure valve core axially slidably disposed within the water passage for opening or closing the water passage. A high-pressure spring pushes the high-pressure valve core axially in a first direction and blocks the inner cavity of the valve sleeve. A low-pressure spring pushes the low-pressure valve core axially in the first direction to open the water passage of the high-pressure valve core. The stiffness of the low-pressure spring is less than that of the high-pressure spring. When the water flow delivered by the inlet channel... When the dynamic pressure is insufficient to push the low-pressure valve core to move axially in the second direction and close the water passage, the water inlet channel connects to the low-pressure water outlet channel via the water passage of the high-pressure valve core, and water flows out from the low-pressure water outlet channel. When the dynamic pressure of the water flow delivered by the water inlet channel is sufficient to push the low-pressure valve core to move axially in the second direction and close the water passage, the low-pressure valve core blocks the water passage within the water passage. The dynamic pressure of the water flow within the water passage is converted into static pressure and pushes the high-pressure valve core to move axially in the second direction, thereby opening the inner cavity of the valve sleeve. The water inlet channel connects to the high-pressure water outlet channel via the inner cavity of the valve sleeve, and water flows out from the high-pressure water outlet channel.

[0006] In a preferred embodiment: a high-pressure sealing ring is fitted on the high-pressure valve core, and a sealing slope is provided on the side wall of the valve sleeve inner cavity. When the high-pressure sealing ring presses against the sealing slope, it blocks the valve sleeve inner cavity; a low-pressure sealing ring is fitted on the low-pressure valve core, and a sealing slope is provided on the side wall of the water passage. When the low-pressure sealing ring presses against the sealing slope, it blocks the water passage.

[0007] In a preferred embodiment: a safety sealing ring is fitted on the high-pressure valve core. When the high-pressure sealing ring presses against the sealing slope and blocks the inner cavity of the valve sleeve, the high-pressure sealing ring and the safety sealing ring are located on the left and right sides of the inlet of the high-pressure water outlet channel, respectively.

[0008] In a preferred embodiment: the sealing slope in the water outlet channel is on the side of the sealing slope in the inner cavity of the valve sleeve facing the second direction axially.

[0009] In a preferred embodiment: the end face of the low-pressure valve core facing the first direction is provided with a groove, the cross-section of the groove is trapezoidal, and the width gradually decreases from the opening position inward.

[0010] In a preferred embodiment: the low-pressure spring is disposed in the water passage of the high-pressure valve core and tensioned between the high-pressure valve core and the low-pressure valve core, and also includes an end cap connected to the end of the high-pressure valve core on one side of the axial direction. The end cap restricts the low-pressure valve core in the water passage. The end cap, the high-pressure valve core, the low-pressure valve core and the low-pressure spring constitute a composite valve core. The end cap is provided with a clearance hole in the middle.

[0011] In a preferred embodiment: a low-pressure water passage hole is provided on one end wall of the high-pressure valve core in the second direction of the axial direction.

[0012] In a preferred embodiment, the valve cover is also included. The valve cover is connected to the end of the valve sleeve on the second axial direction side. The water inlet channel is disposed at the end of the valve sleeve on the first axial direction side. The high-pressure water outlet channel is disposed on the valve sleeve and located in the middle. The low-pressure water outlet channel is disposed on the valve cover.

[0013] In a preferred embodiment, a water pump is also included for pumping water into the water inlet channel.

[0014] In a preferred embodiment: the low-pressure water outlet channel is connected to the self-cleaning water circuit of the smart toilet bidet, and the high-pressure water outlet channel is connected to the human body cleaning water circuit of the smart toilet bidet. The hydraulic water circuit switching method utilizes a high-pressure spring to push the high-pressure valve core axially in a first direction to internally close the valve sleeve cavity, thus cutting off the connection between the water inlet channel and the high-pressure water outlet channel. Simultaneously, a low-pressure spring pushes the low-pressure valve core axially in the first direction to internally open the water passage within the high-pressure valve core, connecting the water inlet channel and the low-pressure water outlet channel. The stiffness of the low-pressure spring is less than that of the high-pressure spring. When the water inlet channel is opened to deliver water, if the dynamic pressure of the water delivered by the water inlet channel is insufficient to push the low-pressure valve core axially in a second direction and close the water passage, the water flows out through the water passage inside the high-pressure valve core and then out of the low-pressure water outlet channel. At this time, the high-pressure valve... Driven by the high-pressure spring, the valve core remains closed within the valve sleeve cavity, and no water flows from the high-pressure outlet channel. If the dynamic pressure of the water flow delivered by the inlet channel can push the low-pressure valve core to move axially in the second direction and close the water passage, the low-pressure valve core internally closes the water passage of the high-pressure valve core to cut off the connection between the inlet channel and the low-pressure outlet channel, and no water flows from the low-pressure outlet channel. Then, the dynamic pressure of the water flow in the water passage is converted into static pressure and pushes the high-pressure valve core to move axially in the second direction, thereby internally opening the valve sleeve cavity to connect the inlet channel and the high-pressure outlet channel. After passing through the valve sleeve cavity, the water flows out from the high-pressure outlet channel.

[0015] In a preferred embodiment: the low-pressure water outlet channel supplies water to the self-cleaning water circuit of the smart toilet bidet, the high-pressure water outlet channel supplies water to the human body cleaning water circuit of the smart toilet bidet, a water pump pumps water into the inlet channel, and the water pressure of the water flow delivered through the inlet channel is controlled by the water pump.

[0016] Compared with the prior art, this technical solution has the following advantages:

[0017] Under normal conditions, the high-pressure spring pushes the high-pressure valve core to cut off the inner cavity of the valve sleeve, while the low-pressure spring pushes the low-pressure valve core shaft to open the water passage of the high-pressure valve core. The low-pressure valve core is located inside the high-pressure valve core. Furthermore, the stiffness of the low-pressure spring is less than that of the high-pressure spring. Therefore, the external force required to compress the high-pressure spring is much greater than that required to compress the low-pressure spring. Consequently, if the low-pressure spring cannot be compressed by the water pressure, the high-pressure spring cannot be compressed either. The high-pressure valve core stably closes the high-pressure outlet channel, and water can only flow through the water passage and finally exit from the low-pressure outlet channel. When water needs to exit through the high-pressure outlet channel, the water pressure must be sufficient to compress the high-pressure spring and close the water passage of the low-pressure valve core. Since the external force required to compress the high-pressure spring is much greater than that required to compress the low-pressure spring, compressing the high-pressure spring by water pressure requires first compressing the low-pressure spring. In other words, only after the low-pressure spring is compressed can the high-pressure spring be further compressed. Therefore, only after the low-pressure valve core compresses the low-pressure spring to close the water passage (i.e., close the low-pressure outlet channel) can the high-pressure valve core compress the high-pressure spring to open the valve core cavity (i.e., open the main pressure outlet channel). Thus, either the high-pressure outlet channel is closed while the low-pressure outlet channel is open, or vice versa. This hydraulic water circuit switching structure has the advantage of preventing simultaneous water flow from both the high-pressure and low-pressure outlet channels, ensuring stable working water pressure in the outlet channel. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A three-dimensional schematic diagram of the hydraulic water circuit switching structure is shown.

[0020] Figure 2 A cross-sectional schematic diagram of the hydraulic water circuit switching structure is shown.

[0021] Figure 3 An exploded schematic diagram of the hydraulic water circuit switching structure is shown.

[0022] Figure 4 A schematic diagram is shown illustrating the hydraulic water circuit switching structure that opens the low-pressure water outlet channel for water discharge.

[0023] Figure 5 A schematic diagram is shown of the hydraulic water circuit switching structure in the state where the high-pressure valve core closes the valve sleeve cavity and the low-pressure valve core closes the water passage.

[0024] Figure 6 A schematic diagram is shown illustrating the hydraulic water circuit switching structure opening the high-pressure water outlet channel for water discharge.

[0025] Figure 7 Another schematic diagram is shown of the high-pressure water outlet channel of the hydraulic water circuit switching structure in the water outlet state.

[0026] Figure 8 Another schematic diagram is shown of the high-pressure water outlet channel of the hydraulic water circuit switching structure in the water outlet state. Detailed Implementation

[0027] The hydraulic water circuit switching structure uses changes in water pressure to switch the water outlet path. It is suitable for occasions where different water pressure requirements exist for the water outlet path, such as switching between low water pressure cleaning and splash prevention mode and high water pressure rinsing mode, switching between low water pressure brush ring mode and high water pressure flushing mode, switching between low water pressure self-cleaning mode and high water pressure human body washing (such as posterior wash / feminine wash) mode, etc.

[0028] Please refer to Figures 1 to 6 The hydraulic water circuit switching structure includes an inlet channel 10, a high-pressure outlet channel 20, and a low-pressure outlet channel 30. When the water pressure in the water circuit is low, the inlet channel 10 connects to the low-pressure outlet channel 30 and water exits from the low-pressure outlet channel 30. Conversely, when the water pressure in the water circuit is high, it connects to the high-pressure outlet channel 20 and water exits from the high-pressure outlet channel 20. It also includes a valve sleeve 40 and a high-pressure valve core 50 axially slidably disposed within the inner cavity of the valve sleeve for opening or closing the inner cavity of the valve sleeve. The high-pressure valve core 50 is located within the inner cavity of the valve sleeve 40, thus cutting off or opening the inner cavity of the valve sleeve from the inside, equivalent to the valve core being inserted into the valve sleeve for closure, unlike a sealing cap structure that seals the opening from the outside. The high-pressure valve core 50 has a water passage 51 in its middle part, and also includes a low-pressure valve core 60 axially slidably disposed in the water passage for opening or closing the water passage. Similarly, the low-pressure valve core 60 is located within the water passage 51, thus cutting off or opening the water passage 51 from the inside, unlike a sealing cap structure that seals the opening from the outside. A high-pressure spring 70 pushes the high-pressure valve core 50 axially in the first direction (corresponding to...). Figure 2The high-pressure valve core 50 moves to the left and blocks the inner cavity of the valve sleeve 40, meaning the high-pressure valve core 50 blocks the passage inside the valve sleeve 40. A low-pressure spring 80 pushes the low-pressure valve core 60 axially in the first direction to open the water passage 51 of the high-pressure valve core 50, i.e., the low-pressure spring 80 pushes the low-pressure valve core 60 to keep the water passage 51 unobstructed. The stiffness of the low-pressure spring 80 is less than that of the high-pressure spring 60; this stiffness is conventionally referred to as the K value.

[0029] When working, see Figure 2 and Figure 4 When the dynamic pressure of the water flow delivered by the inlet channel 10 is insufficient to push the low-pressure valve core 60 axially in the second direction ( Figure 2 When the water passage 51 is moved and closed in the right direction, including when the low-pressure spring 80 cannot be compressed or is only partially compressed but the low-pressure valve core 60 cannot cut off the water passage 51, the water passage 51 remains unobstructed as usual while the high-pressure valve core still cuts off the valve sleeve cavity. The water inlet channel 10 can then connect to the low-pressure outlet channel 30 via the water passage 51 of the high-pressure valve core. Therefore, water flows out only from the low-pressure outlet channel 30.

[0030] When working, see Figure 5 and Figure 6 When the dynamic pressure of the water flow delivered by the inlet channel 10 is able to push the low-pressure valve core 60 to move axially in the second direction and close the water passage 51, the low-pressure valve core blocks the water passage within the water passage, and the low-pressure outlet channel 30 does not discharge water. The dynamic pressure of the water flow in the water passage 51 is transformed into static pressure and pushes the high-pressure valve core 50 to move axially in the second direction, thereby opening the inner cavity of the valve sleeve 40. At this time, the inlet channel 10 connects to the high-pressure outlet channel 20 through the inner cavity of the valve sleeve 40, and the water flows out only from the high-pressure outlet channel 20.

[0031] Therefore, the opening of the inner cavity of the valve sleeve 40 is premised on the low-pressure valve core 60 cutting off the water passage 51. The dynamic pressure of the water flow in the water passage 51 is transformed into static pressure, and the driving force of the water flow increases dramatically in an instant, which can push the high-pressure valve core 50 to open the inner cavity of the valve sleeve 40.

[0032] Understandably, when water flows out of the high-pressure outlet channel 20, if the dynamic pressure in the inlet channel 10 drops to a level insufficient to suppress the low-pressure valve core 60, in other words, the low-pressure valve core 60 reopens the water passage 51 due to the drop in dynamic water pressure. The opening of the water passage 51 will then release pressure, significantly reducing the thrust on the high-pressure valve core 50. Consequently, the high-pressure spring 70 will push the high-pressure valve core 50 back to close the inner cavity of the valve sleeve 40. Therefore, the high-pressure outlet channel 20 and the low-pressure outlet channel 30 can be switched instantaneously, effectively preventing simultaneous water flow from affecting the outlet water pressure. Of course, if one wants to switch to the low-pressure outlet channel 30 while the high-pressure outlet channel 20 is flowing, the inlet channel 10 can be closed first, causing the low-pressure spring and high-pressure spring to reset the low-pressure valve core and high-pressure valve core respectively. Then, the inlet channel 10 can be reopened, with the reset also completed instantly. The opening and closing action of the inlet channel 10 can also be controlled to be completed in a very short time. Therefore, this switching method can also achieve rapid switching.

[0033] Understandably, the greater the difference between the stiffness of the low-pressure spring 80 and the stiffness of the high-pressure spring 60, the better the switching sensitivity and the better the accuracy. Therefore, the stiffness of the high-pressure spring 60 is preferably between five and fifty times that of the stiffness of the low-pressure spring 80, more preferably between ten and forty times, and most preferably between fifteen and thirty times.

[0034] In addition, combined Figures 6 to 8 As shown, since the high-pressure valve core 50 is driven by water pressure to open the inner cavity of the valve sleeve 40, the high-pressure valve core 50 is in a dynamic equilibrium mode under the combined force of water pressure and high-pressure spring 60. Therefore, the opening degree of the high-pressure valve core 50 or the compression degree of the high-pressure spring 60 is proportional to the water pressure. Thus, in the high-pressure water outlet mode, that is, in the high-pressure water outlet channel 20, the water flow pressure of the inlet channel 10 can be controlled to adjust the water outlet intensity of the high-pressure water outlet channel 20, achieving different water outlet intensities at high, medium, and low levels in the high-pressure water outlet channel 20 mode. Figure 6 Maximum water pressure and strongest water output correspond to high-end settings. Figure 7 The lowest water pressure and weakest water flow correspond to the lowest setting. Figure 8 The water pressure and water output are moderate, corresponding to the medium setting. Therefore, the hydraulic water circuit switching structure of this utility model also has the advantage of controlling the water output intensity in the high-pressure water output mode by controlling the water flow pressure.

[0035] Preferably, a high-pressure sealing ring 52 is fitted onto the high-pressure valve core 50, and a sealing slope 42 is provided on the side wall of the inner cavity of the valve sleeve 40. When the high-pressure sealing ring 52 presses against the sealing slope 42, it blocks the inner cavity of the valve sleeve 40, meaning water cannot pass through the inner cavity of the valve sleeve. A low-pressure sealing ring 62 is fitted onto the low-pressure valve core 60, and a sealing slope 53 is provided on the side wall of the water passage 51 of the high-pressure valve core. When the low-pressure sealing ring 62 presses against the sealing slope 53, it blocks the water passage 51, meaning water cannot flow through the water passage. The combination of the sealing ring and the sealing slope controls the opening and closing of the water circuit, resulting in a simple, stable, and reliable structure.

[0036] Preferably, a safety sealing ring 54 is fitted on the high-pressure valve core 50. When the high-pressure sealing ring 52 presses against the sealing slope 42 to block the inner cavity of the valve sleeve 40, that is, when the high-pressure water outlet channel is closed and the low-pressure water outlet channel is opened, the high-pressure sealing ring 52 and the safety sealing ring 54 are respectively located on the left and right sides of the inlet of the high-pressure water outlet channel 20, thereby preventing water from seeping into the high-pressure water outlet channel from the gap between the high-pressure valve core 50 and the valve sleeve 40 when water is discharged from the low-pressure water outlet channel.

[0037] Preferably, the sealing slope 53 in the water outlet channel 51 is on the side of the sealing slope 42 in the inner cavity of the valve sleeve 40 facing the second direction in the axial direction, that is, in the figure, the sealing slope 53 is on the right side relative to the sealing slope 42.

[0038] Preferably, the end face of the low-pressure valve core 60 facing the first direction is provided with a groove 64, the cross-section of the groove 64 is trapezoidal, and the width gradually decreases from the opening position inward.

[0039] Preferably, the low-pressure spring 80 is disposed in the water passage 51 of the high-pressure valve core 50 and tensioned between the high-pressure valve core 50 and the low-pressure valve core 60. It also includes an end cap 90 connected to the end of the high-pressure valve core 50 on one side of its axial direction. The end cap 90 confines the low-pressure valve core 60 within the water passage 51. The end cap 90, high-pressure valve core 50, low-pressure valve core 60, and low-pressure spring 80 constitute a composite valve core. The end cap 90 has a clearance hole 92 in its center. In this embodiment, the end cap 90 is snapped together with the high-pressure valve core 50. Water flows directly from the inlet channel through the clearance hole 92 to the groove 64.

[0040] Preferably, a guide insertion and mating structure is provided between the water passage 51 of the valve core 50 and the low-pressure valve core 60. Furthermore, a low-pressure water passage hole 55 is provided on the end wall of the high-pressure valve core 50 on the second axial direction side. In this way, the low-pressure valve core 60 has good coaxiality when sliding, and at the same time, it does not affect the water passage capacity of the water passage 51.

[0041] Preferably, the system further includes a valve cover 100, which is connected to the end of the valve sleeve 40 on the axial second direction side. The water inlet channel 10 is disposed at the end of the valve sleeve shaft 40 on the first direction side. The high-pressure water outlet channel 20 is disposed on the valve sleeve and located in the middle. The low-pressure water outlet channel 30 is disposed on the valve cover 100. Further, the high-pressure spring 70 is tensioned between the valve cover 100 and the high-pressure valve core 50.

[0042] Preferably, it also includes a water pump for pumping water into the water inlet channel, so that the water flow pressure in the water inlet channel 10 can be adjusted by the water pump to achieve high and low water pressure water outlet control.

[0043] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A hydraulic water circuit switching structure, comprising an inlet channel, a high-pressure outlet channel, and a low-pressure outlet channel, characterized in that: It also includes a valve sleeve and a high-pressure valve core axially slidably disposed within the inner cavity of the valve sleeve for opening or closing the inner cavity of the valve sleeve. The high-pressure valve core has a water passage in the middle. It also includes a low-pressure valve core axially slidably disposed within the water passage for opening or closing the water passage. A high-pressure spring pushes the high-pressure valve core to move axially in a first direction and blocks the inner cavity of the valve sleeve. A low-pressure spring pushes the low-pressure valve core to move axially in the first direction and opens the water passage of the high-pressure valve core. The stiffness of the low-pressure spring is less than that of the high-pressure spring. When the dynamic pressure of the water flow delivered by the inlet channel is insufficient to push the low-pressure valve core to move axially in the second direction and close the water passage, the inlet channel connects to the low-pressure outlet channel via the water passage of the high-pressure valve core, and the water flows out from the low-pressure outlet channel. When the dynamic pressure of the water flow delivered by the inlet channel is sufficient to push the low-pressure valve core to move axially in the second direction and close the water passage, the low-pressure valve core blocks the water passage within the water passage. The dynamic pressure of the water flow within the water passage is transformed into static pressure, which pushes the high-pressure valve core to move axially in the second direction, thereby opening the inner cavity of the valve sleeve. The inlet channel connects to the high-pressure outlet channel via the inner cavity of the valve sleeve, and the water flows out from the high-pressure outlet channel.

2. The hydraulic water circuit switching structure according to claim 1, characterized in that: A high-pressure sealing ring is fitted onto the high-pressure valve core, and a sealing slope is provided on the side wall of the valve sleeve inner cavity. When the high-pressure sealing ring presses against the sealing slope, it blocks the inner cavity of the valve sleeve. A low-pressure sealing ring is fitted onto the low-pressure valve core, and a sealing slope is provided on the side wall of the water passage. When the low-pressure sealing ring presses against the sealing slope, it blocks the water passage.

3. The hydraulic water circuit switching structure according to claim 2, characterized in that: A safety sealing ring is fitted onto the high-pressure valve core. When the high-pressure sealing ring presses against the sealing slope and blocks the inner cavity of the valve sleeve, the high-pressure sealing ring and the safety sealing ring are located on the left and right sides of the inlet of the high-pressure water outlet channel, respectively.

4. The hydraulic water circuit switching structure according to claim 2 or 3, characterized in that: The sealing slope in the water outlet channel is on the side of the sealing slope in the inner cavity of the valve sleeve facing the second direction axially.

5. The hydraulic water circuit switching structure according to claim 4, characterized in that: The end face of the low-pressure valve core facing the first direction is provided with a groove. The cross-section of the groove is trapezoidal, and the width gradually decreases from the opening position inward.

6. The hydraulic water circuit switching structure according to claim 1, characterized in that: The low-pressure spring is disposed in the water passage of the high-pressure valve core and tensioned between the high-pressure valve core and the low-pressure valve core. It also includes an end cap connected to the end of the high-pressure valve core on one side of the axial direction. The end cap restricts the low-pressure valve core in the water passage. The end cap, the high-pressure valve core, the low-pressure valve core and the low-pressure spring constitute a composite valve core. The end cap is provided with a clearance hole in the middle.

7. The hydraulic water circuit switching structure according to claim 6, characterized in that: The high-pressure valve core has a low-pressure water passage hole on the end wall on the second direction side of the axial direction.

8. The hydraulic water circuit switching structure according to claim 1, characterized in that: It also includes a valve cover, which is connected to the end of the valve sleeve located on the second axial direction side. The water inlet channel is located at the end of the valve sleeve on the first axial direction side. The high-pressure water outlet channel is located on the valve sleeve and in the middle. The low-pressure water outlet channel is located on the valve cover.

9. The hydraulic water circuit switching structure according to claim 1, characterized in that: It also includes a water pump for pumping water into the inlet channel.

10. The hydraulic water circuit switching structure according to claim 9, characterized in that: The low-pressure water outlet channel is connected to the self-cleaning water circuit of the smart toilet body washer, and the high-pressure water outlet channel is connected to the body cleaning water circuit of the smart toilet body washer.

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