Washing switching valve and washing assembly

Abstract

The flushing switching valve comprises a valve body, the valve body is provided with a switching cavity and two water outlets communicated with the switching cavity, a switching piece capable of rotating around the axial direction of the switching piece to open and close the water outlets is arranged in the switching cavity, and one water outlet is provided with a suction inlet located outside the switching cavity; the valve body is further provided with a fluid channel and a transmission cavity, the transmission cavity is formed in the axial side of the switching cavity, and a transmission piece rotating coaxially with the switching piece is arranged in the transmission cavity. The fluid channel is communicated with the suction inlet, a movable sliding piece is arranged in the fluid channel, the sliding piece and the transmission piece are oppositely arranged, and the transmission piece can be matched with the sliding piece in an abutting and pushing mode when rotating to a preset position along with the switching piece; when the switching piece rotates to open the water outlet with the suction inlet and drives the transmission piece to abut against the sliding piece, the sliding piece moves to open the fluid channel, and fluid is sucked into the suction inlet through the fluid channel. The on-off of the fluid channel is controlled through mechanical linkage, the washing effect and the bubbling function of the brush ring are both considered, the structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of sanitary ware, and in particular to a flushing switching valve and a flushing assembly. Background Technology

[0002] Existing bathroom brush ring foam shield flushing systems mainly consist of a water tank assembly, a one-in-two-out switching valve, and a foam box assembly. The one-in-two-out switching valve integrates a Venturi tube structure to achieve foam liquid suction. To achieve switching between regular flushing and foam shield brush ring operation, existing technologies generally add electrically controlled valves such as solenoid valves between the foam box assembly and the Venturi tube, independently controlling the on / off state of the foam liquid pipeline in a two-way valve switching manner.

[0003] This technical solution has drawbacks: First, the additional electronically controlled valves and other switching components directly increase the system hardware cost and assembly process complexity, resulting in higher production and subsequent maintenance costs. Second, the air intake passage of the venturi tube cannot achieve on / off control adaptable to different working conditions. Regardless of whether it is the foam shield brush ring working condition or the regular rinsing working condition, the venturi tube corresponding to the brush ring water path will continuously draw in air, causing a large amount of air to mix into the brush ring water flow during regular rinsing. This significantly weakens the water flow impact force, resulting in insufficient brush ring rinsing force, slightly louder air intake noise, and a significant reduction in cleaning effect. It cannot simultaneously meet the hydraulic performance requirements of foam generation and regular rinsing. Summary of the Invention

[0004] The main objective of this invention is to overcome the shortcomings of existing technologies, such as the high cost of adding an electronically controlled valve and insufficient flushing force due to air mixing in the conventional flushing brush ring. This invention proposes a flushing switching valve and flushing assembly that controls the flow of fluid through mechanical linkage, taking into account both the flushing effect and the foaming function of the brush ring, simplifying the structure and reducing costs.

[0005] The present invention adopts the following technical solution:

[0006] A flushing switching valve includes a valve body, the valve body having a switching chamber and two outlets communicating therewith, the switching chamber having a switching element that can rotate around its own axis to open and close the outlets, and one of the outlets having a suction port located outside the switching chamber.

[0007] The valve body is also provided with a fluid passage and a transmission chamber. The transmission chamber is located on one side of the switching chamber and contains a transmission component that rotates coaxially with the switching component. The fluid passage is connected to the suction port and contains a movable sliding component. The sliding component is arranged opposite to the transmission component. When the transmission component rotates with the switching component to a preset position, it can form a pushing engagement with the sliding component.

[0008] When the switching component rotates to open the outlet with the suction port and drives the transmission component to push against the sliding component, the sliding component moves to open the fluid channel, and the fluid is drawn into the suction port through the fluid channel.

[0009] The fluid channel is opened on the side wall of the transmission cavity and extends in a direction tangent to the rotation trajectory circle of the transmission component; the fluid channel has an opening that connects to the switching cavity; the sliding component has a transmission part that passes through the opening and is located in the switching cavity; the transmission component has a pushing part that rotates with the transmission component to push against the transmission part and drive the sliding component to generate displacement.

[0010] The switching component includes a rotating shaft and a blocking part. The rotating shaft is rotatable around the axis of the switching cavity, and one end of it is inserted into the transmission cavity. The blocking part is fixedly connected to the rotating shaft. The transmission part is fixedly connected to the rotating shaft. The pushing part extends radially along the rotating shaft and is configured such that when the blocking part blocks another outlet, the pushing part approaches or pushes against the transmission part.

[0011] The fluid channel has an inlet and an outlet; the inlet and outlet are arranged at intervals along the extension direction of the fluid channel, and the outlet is connected to the suction port; the sliding member has a piston part, and the sliding member moves to open and close the connection between the inlet and the outlet through the piston part, so that the fluid channel opens and closes accordingly.

[0012] The fluid channel is provided with two inlet and outlet groups arranged at intervals along the extension direction of the fluid channel. Each inlet and outlet group includes an inlet and an outlet. The outlet is provided with two suction ports to connect with the two outlets. The sliding member is provided with two piston parts arranged at intervals along the extension direction of the fluid channel. When the sliding member moves, each piston part opens and closes the connection between the inlet and outlet of the corresponding group, so that the fluid channel opens and closes accordingly.

[0013] The different strokes of the sliding member along the extension direction of the fluid channel can change the flow area of ​​the corresponding inlet through the piston part, thereby adjusting the opening of the inlet and thus controlling the flow rate of the fluid drawn in through the fluid channel.

[0014] An elastic element is also provided inside the fluid channel. The elastic element is located between the sliding element and the inner wall of the fluid channel to drive the sliding element to return to the position where the fluid channel is closed.

[0015] The outlet is equipped with an outlet connector, and the outlet connector has a variable diameter section. The suction port is located at the end with the smaller inner diameter of the variable diameter section. After the water flows through the variable diameter section and is accelerated, a negative pressure is formed around the end with the smaller inner diameter of the variable diameter section, so that the fluid passes through the fluid channel and is drawn in through the suction port.

[0016] A flushing assembly includes a brush ring pipe, a flushing pipe, and a liquid storage box; it also includes the aforementioned flushing switching valve, with an outlet having an inlet that is a brush ring outlet connected to the brush ring pipe; another outlet is a bottom flush outlet connected to the flushing pipe; the fluid channel has two inlets, which are respectively connected to the liquid storage box and the outside atmosphere.

[0017] The switching component rotates around its own axis to different positions, corresponding to different working states:

[0018] When the switching component rotates to the point where the bottom flush outlet is open and the brush ring outlet is closed, the sliding component does not move and the fluid channel is closed, allowing water to flow out of the flushing pipe separately.

[0019] When the switching component is rotated to the point where both the bottom flush outlet and the brush ring outlet are open, the sliding component does not move and the fluid channel is closed, and water flows out of the brush ring pipe and the flushing pipe simultaneously.

[0020] When the switching component rotates to the point where the bottom flush outlet is closed and the brush ring outlet is open, the sliding component does not move and the fluid channel is closed, and water flows out of the brush ring pipe alone.

[0021] When the switching component continues to rotate to the preset position where the bottom flush outlet is closed and the brush ring outlet remains open, the transmission component pushes the sliding component to open the fluid channel. The foam liquid in the storage box and the outside atmosphere are drawn in by negative pressure through the fluid channel and the suction port, and mix with the water from the brush ring outlet to foam, thus realizing foaming of the brush ring pipe.

[0022] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this invention, when the outlet where the suction port is located is opened by rotating the switching component, the coaxial transmission component can also be driven to push the sliding component, thereby realizing the mechanical linkage opening and closing of the fluid channel. The fluid suction behavior of the suction port can be controlled under specific working conditions without the need for electrical control components. This avoids the problem of water mixing and reduced flushing force caused by continuous air intake during conventional flushing, and at the same time eliminates the cost increase caused by electrical control components such as solenoid valves in traditional solutions.

[0024] 2. In this invention, the transmission component and the switching component are coaxially fixedly connected, the pushing part extends radially and pushes against the transmission part of the sliding component in the switching cavity, and the elastic component drives the sliding component to reset, thus forming a self-resetting mechanical linkage system, ensuring that the liquid aspiration action is triggered only in the preset angle range, the action response is rapid, and the reset is reliable.

[0025] 3. In this invention, the fluid channel adopts a structure in which the piston part opens and closes the passage between the inlet and outlet, and can be expanded into a layout of two sets of inlet and outlet groups and two piston parts, so as to realize the independent, synchronous and crosstalk-free intake of air and foam liquid, thereby improving the foam mixing uniformity, foaming stability and intake efficiency.

[0026] 4. In this invention, the sliding component continuously adjusts the flow area by blocking the inlet area of ​​the piston part during the movement stroke, so that the suction flow rate changes dynamically with the rotation angle. This allows for the preferential intake of high-concentration liquid in the early stage of foam generation and the increase of air ratio in the later stage, thereby achieving adaptive optimization of foam fineness and foaming amount.

[0027] 5. In this invention, a variable diameter section is provided inside the water outlet connector, so that the water flows through the narrowing area to accelerate the formation of a stable negative pressure zone. The suction port is located in the core area of ​​the negative pressure zone to ensure that foam liquid and air can be reliably sucked in. At the same time, there is no additional negative pressure interference during normal flushing, achieving dual optimization of suction for foaming and no air mixing during flushing.

[0028] 6. In this invention, the mechanical linkage structure of the switching valve is integrated into the flushing assembly. Multiple working conditions can be switched through a single valve body, so that the flushing system can take into account both high hydraulic flushing performance and high-quality foam shield function without adding external control components, thus achieving full working condition coverage of bathroom cleaning scenarios. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the flushing switching valve of the present invention;

[0030] Figure 2 for Figure 1 Exploded view;

[0031] Figure 3 This is a diagram of the body structure.

[0032] Figure 4 This is a diagram of the cover structure;

[0033] Figure 5 This is a top view of the cover.

[0034] Figure 6 Here is a structural diagram of the sliding component;

[0035] Figure 7 Transmission component structure Figure 1 ;

[0036] Figure 8 Transmission component structure Figure 2 ;

[0037] Figure 9 Here is a structural diagram of the switching component;

[0038] Figure 10 This is a structural diagram of a water outlet connector with an intake port;

[0039] Figure 11 This is a top view of the switching valve of the present invention;

[0040] Figure 12 for Figure 11 AA cross-sectional view (brush ring water outlet closed, bottom flush water outlet open);

[0041] Figure 13 for Figure 11 BB section view (sliding component not moved);

[0042] Figure 14 Figure 11AA cross-sectional view (brush ring outlet and bottom flush outlet open).

[0043] Figure 15 for Figure 11 BB section view (sliding component not moved);

[0044] Figure 16 AA cross-sectional view (brush ring water outlet open, bottom flush water outlet closed);

[0045] Figure 17 for Figure 11 BB section view (sliding component not moved);

[0046] Figure 18 AA cross-sectional view (brush ring water outlet open, bottom flush water outlet closed);

[0047] Figure 19 for Figure 11 BB cross-sectional view (sliding component generates displacement, inlet opening is small);

[0048] Figure 20 AA cross-sectional view (brush ring water outlet open, bottom flush water outlet closed);

[0049] Figure 21 for Figure 11 BB cross-sectional view (the sliding component causes displacement, and the inlet opening increases);

[0050] Figure 22 for Figure 12 CC section view;

[0051] Figure 23 This is a structural diagram of the flushing component of the present invention;

[0052] Figure 24 for Figure 23 Top view;

[0053] in:

[0054] 10. Valve body; 11. Switching chamber; 12. Outlet; 13. Switching component; 14. Drive motor; 15. Suction port; 16. Fluid passage; 16a. Opening; 17. Transmission chamber; 18. Transmission component; 19. Sliding component; 20. Transmission part; 21. Pushing part; 22. Rotating shaft; 23. Sealing part; 24. Piston part; 25. Inlet / outlet assembly; 25a. Inlet; 25b. Outlet; 26. Sealing ring; 27. Elastic component; 28. Outlet connector; 29. ​​Variable diameter section; 30. Body; 30a. Inlet; 31. Cover; 32. Fixing frame; 33. Inlet connector; 34. Brush ring pipe; 35. Flushing pipe; 36. Liquid storage box; 37. Water tank.

[0055] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0056] The present invention will be further described below through specific embodiments.

[0057] See Figure 1 , Figure 2 A flushing switching valve includes a valve body 10, which has a switching chamber 11 and two outlets 12 communicating with it. The switching chamber 11 contains a switching element 13 that can rotate around its own axis. The switching element 13 is used to open and close the two outlets 12 (allowing for single opening, simultaneous opening of both, or single closing). A drive motor 14 is fixedly installed on the outside of the valve body 10 at a position corresponding to the transmission chamber 17. The output shaft of the drive motor 14 is connected to the rotating shaft 22 of the switching element 13, providing power for the rotation of the switching element 13 and driving it to switch to different positions.

[0058] One of the outlets 12 has a suction port 15 located outside the switching chamber 11. The suction port 15 is connected to the outlet 12 and is used to achieve fluid intake in conjunction with negative pressure. See also Figure 4 , Figure 5 , Figure 7 and Figure 8 The valve body 10 also includes a fluid passage 16 and a transmission chamber 17. The transmission chamber 17 is located on one axial side of the switching chamber 11 (i.e., on one axial side of the switching element 13). The transmission chamber 17 is located outside the switching chamber 11 and contains a transmission element 18 that rotates coaxially with the switching element 13. The transmission element 18 can rotate synchronously with the switching element 13. The fluid passage 16 is connected to the suction port 15, and a sliding element 19 that can move along its extension direction is provided inside the fluid passage 16. The sliding element 19 is arranged opposite to the transmission element 18. When the transmission element 18 rotates to a preset position with the switching element 13, it can form a pushing engagement with the sliding element 19.

[0059] When the drive motor 14 drives the switching element 13 to rotate, opening the outlet 12 with the suction port 15, and the switching element 13 does not push against the sliding element 19, the sliding element 19 does not move, and the fluid channel 16 is closed. See [link to relevant documentation]. Figures 14-17 When the switching component 13 drives the transmission component 18 to continue rotating to the preset position, it pushes against the sliding component 19, causing the sliding component 19 to move and open the fluid channel 16. Fluid is then drawn into the suction port 15 through the fluid channel 16. (See [reference]) Figures 18-21 This structure drives the switching element 13 to rotate via the drive motor 14. With the mechanical linkage of the switching element 13, the transmission element 18 and the sliding element 19, the on / off control of the fluid channel 16 can be achieved without the need for additional electronically controlled valves, simplifying the structure and reducing production costs.

[0060] The fluid channel 16 can be used to access external gas and foam mixture, and complete the suction action in conjunction with the negative pressure at the suction port 15. It is suitable for foaming conditions, and at the same time, it does not affect the normal flushing function and can avoid the problem of water flow mixing caused by air intake at the suction port 15 during normal water discharge.

[0061] In this embodiment, the fluid channel 16 is formed on the side wall of the transmission cavity 17 and extends in a direction tangential to the rotation trajectory circle of the transmission member 18. The arrangement of the fluid channel 16 allows the rotational tangential force of the transmission member 18 to be directly transmitted to the sliding member 19, ensuring balanced force and smooth operation during the pushing transmission process. The fluid channel 16 has an opening 16a on the side facing the switching cavity 11, which provides space and clearance for the corresponding part of the sliding member 19 to pass through.

[0062] See Figure 6 , Figure 13 The sliding member 19 has a transmission part 20 at one end facing the switching cavity 11. The transmission part 20 extends into the switching cavity 11 through the opening 16a, and the end of the transmission part 20 is located on the movement trajectory of the transmission member 18. The transmission member 18 has a corresponding pushing part 21. The pushing part 21 rotates synchronously with the transmission member 18 and the switching member 13. When it rotates to a preset linkage angle, it pushes against the transmission part 20. The rotational pushing force drives the sliding member 19 to move along the extension direction of the fluid channel 16, thereby triggering the opening of the fluid channel 16.

[0063] By adopting this mechanical push-linkage structure, the rotation condition and the opening and closing of the fluid channel 16 can be bound together. The sliding component 19 will only be triggered when the switching component 13 opens the corresponding outlet 12 and continues to rotate to the preset position. Structurally, this avoids the problems of air mixing and liquid suction caused by the accidental opening of the fluid channel 16 under normal flushing conditions, and further improves the stability and reliability of the working condition switching.

[0064] In this embodiment, see Figure 9 The switching component 13 includes a rotating shaft 22 and a sealing part 23. The rotating shaft 22 is rotatable about the axis of the switching cavity 11, and one end of the rotating shaft 22 passes through the cavity wall of the switching cavity 11 and is inserted into the transmission cavity 17. After passing through the transmission cavity 17, the other end of the rotating shaft 22 is pin-connected to the output shaft of the drive motor 14. The sealing part 23 is fixedly connected to the rotating shaft 22, and the side of the sealing part 23 away from the rotating shaft 22 can slide against the inner wall of the switching cavity 11. It is used to rotate to the corresponding position under the drive of the rotating shaft 22 to realize the opening and closing of the outlet 12.

[0065] The transmission component 18 is fixedly connected to the rotating shaft 22, ensuring that the transmission component 18 rotates synchronously with the rotating shaft 22 and the sealing part 23. The pushing part 21 extends radially along the rotating shaft 22 so that its end rotation trajectory intersects with the movement path of the transmission part 20, thus stably pushing against the transmission part 20. Simultaneously, the positions of the transmission component 18 and the sealing part 23 are relatively fixed, and their structure is configured such that when the sealing part 23 rotates to block another outlet 12 (the outlet 12 without an inlet 15), the outlet 12 with the inlet 15 is in the open state, and the pushing part 21 approaches or pushes against the transmission part 20. If the switching component 13 continues to rotate to maintain this blocking state, the pushing part 21 can apply a stable pushing force to the transmission part 20. See [link to relevant documentation]. Figures 19-21 .

[0066] The fluid channel 16 has an inlet 25a and an outlet 25b, which are spaced apart along the extension direction of the fluid channel 16. The outlet 25b is connected to the suction port 15, allowing fluid to enter the suction port 15 after being transported through the fluid channel 16. The inlet 25a is used to receive external gas or foam mixture to provide the required fluid for flushing operations. The sliding member 19 has a piston part 24, and a sealing ring 26 can be fitted around the outer periphery of the piston part 24. When the sliding member 19 moves, the piston part 24 blocks the inlet 25a and / or the outlet 25b, or blocks the communication area between the inlet 25a and the outlet 25b, thereby cutting off the communication between the inlet 25a and the outlet 25b, and the fluid channel 16 is closed accordingly. Conversely, the piston part 24 opens the inlet 25a and / or the outlet 25b, or opens the communication area between the inlet 25a and the outlet 25b, thereby opening the communication between the inlet 25a and the outlet 25b, and the fluid channel 16 is opened accordingly.

[0067] As an extension of the above-mentioned single-group inlet / outlet fluid channel 16 embodiment, to adapt to the use requirements of simultaneous liquid and air intake from dual suction inlets 15 and further improve the uniformity and stability of bubble output from the brush ring, an embodiment of fluid channel 16 with two groups of inlet / outlet 25 is also provided, with the specific structure as follows:

[0068] The fluid channel 16 is provided with two inlet / outlet groups 25 spaced apart along the extension direction of the fluid channel 16. Each inlet / outlet group 25 includes an inlet 25a and an outlet 25b. The outlet 12, which is provided with a suction port 15, is provided with two suction ports 15 to connect with the two outlets 25b, ensuring that the two fluid transport paths do not interfere with each other and open and close synchronously. The sliding member 19 is provided with two sets of piston parts 24 spaced apart along the extension direction of the fluid channel 16. Each piston part 24 is fitted with a sealing ring 26. When the sliding member 19 moves under the push of the transmission member 18, each piston part 24 opens and closes the connection between the inlet 25a and outlet 25b of the corresponding group, so that the fluid channel 16 opens and closes accordingly.

[0069] Furthermore, a sealing ring 26 can be added to the sliding member 19 in the interval area between the two sets of inlet and outlet groups 25 to isolate the fluid communication path between the two sets of inlet and outlet groups 25, avoid cross-flow interference between the two liquid suction and air suction paths, and ensure that the two sets of inlet and outlet groups 25 independently and stably transport fluid.

[0070] The independent separation of the two fluid paths allows for synchronized on / off control, further improving the supply and mixing uniformity of liquid and gas intake while maintaining the synchronicity of mechanical linkage, thus balancing foaming effect and structural operational stability. For example, Figure 5 and Figure 13 As shown, one set of inlet and outlet groups 25 serves as a gas inlet and outlet, which opens and closes the fluid channel 16 by blocking or opening the inlet 25a and the outlet 25b through the piston part 24; the other set of inlet and outlet groups 25 serves as a mixed liquid inlet and outlet, which opens and closes the fluid channel 16 by blocking or opening the communication area between the inlet 25a and the outlet 25b through the piston part 24.

[0071] In practical applications, the sliding component 19 can adopt a one-piece molded integral structure, with the two piston parts 24 integrally machined with the main body of the sliding component 19; alternatively, the sliding component 19 can also adopt a split and connected structure, that is, it consists of two independent sliding parts, with each sliding part corresponding to one piston part 24. The two parts are in contact with each other or are linked and fixed together by a rigid connecting part, which can also achieve synchronous displacement and synchronous opening and closing. It can adapt to different processing technology and assembly space requirements, and the structural layout is more flexible.

[0072] Whether it is a single piston section 24 or a double piston section 24, the different strokes of the sliding member 19 moving along the extension direction of the fluid channel 16 can be adjusted by changing the flow area of ​​the inlet 25a through the corresponding piston section 24, thereby adjusting the opening degree of the inlet 25a and realizing the controllability of the fluid flow rate drawn in through the fluid channel 16. See [link to relevant documentation]. Figure 19 and Figure 21 For example, this design allows for the control of the inhalation volume, satisfying both the need for high liquid suction and low inhalation volume in the initial foaming stage and the need for high inhalation volume and excellent foaming effect in the subsequent stage.

[0073] In this embodiment, an elastic element 27 is also provided inside the fluid channel 16. The elastic element 27 can be a spring or a sheet. The elastic element 27 is located between the sliding member 19 and the inner wall of the fluid channel 16. When the pushing part 21 of the transmission member 18 separates from the transmission part 20 of the sliding member 19, the elastic element 27 can drive the sliding member 19 to return to the position where the fluid channel 16 is closed.

[0074] Furthermore, the outlet 12 is provided with an outlet connector 28, and the outlet connector 28 has a reducing section 29, the inner diameter of which is set to gradually decrease along the direction of water flow. The suction port 15 is located at the end with the smaller inner diameter of the reducing section 29. When water flows through the reducing section 29, the flow velocity increases due to the narrowing of the channel. According to the Venturi effect, a negative pressure is formed around the end with the smaller inner diameter of the reducing section 29. This negative pressure acts on the suction port 15, causing the fluid to be drawn in through the fluid channel 16 and through the suction port 15.

[0075] In this embodiment, the valve body 10 is constructed using either an integral structure or a split structure. Taking a split structure as an example, see [link to example]. Figures 2-5 The device includes a main body 30, a cover 31, and a fixing frame 32. The main body 30 has two water outlets 12, a water inlet 30a, and a switching chamber 11. The two water outlets 12 are respectively connected to water outlet connectors 28, and the water inlet 30a is connected to a water inlet connector 33. The cover 31 is detachably fixed to the main body 30. The side of the cover 31 facing away from the switching chamber 11 has a transmission chamber 17, and the cover 31 also has a fluid channel 16. The fixing frame 32 is detachably fixed to the cover 31, and the drive motor 14 is mounted on the fixing frame 32.

[0076] Based on this, see Figures 22-24 This embodiment also proposes a flushing assembly, including a brush ring pipe 34, a flushing pipe 35, a liquid storage box 36, and a flushing switching valve as described above. One outlet 12, equipped with an inlet 15, serves as the brush ring outlet, connected to the brush ring pipe 34, for supplying brush ring water or foam to the toilet bowl wall. The other outlet 12 is a bottom flush outlet, connected to the flushing pipe 35, for supplying bottom flush water to the toilet. The inlet 30a of the valve body 10 is connected to a water tank 39. Water stored in the water tank 39 enters the switching chamber 11 within the valve body 10 through the inlet 30a, supplying water to the two outlets 12.

[0077] The fluid channel 16 of the flushing switching valve is provided with two inlets 25a. One inlet 25a is connected to the liquid storage box 36 through a pipe, and the liquid storage box 36 provides the foam mixture required for the brush ring to produce foam. The other inlet 25a of the fluid channel 16 can be the opening 16a of the fluid channel 16 and connected to the outside atmosphere to introduce the air required for foaming. The two supply channels are synchronously opened and closed by the mechanical opening and closing of the sliding member 19.

[0078] In this embodiment, the drive motor 14 drives the switching component 13 to rotate around its own axis to different positions, which can correspond to different working states of the flushing component. The specific working process is as follows:

[0079] See Figure 12 , Figure 13When the switching component 13 rotates to the point where the bottom flush outlet is open and the brush ring outlet is closed, the pushing part 21 of the transmission component 18 is completely separated from the transmission part 20 of the sliding component 19. The sliding component 19 does not move and remains in the closed state of the fluid channel 16 under the action of the elastic component 27. Water from the water tank 39 enters the flushing pipe 35 through the bottom flush outlet, realizing that the flushing pipe 35 has water outlet separately.

[0080] See Figure 14 , Figure 15 When the switching component 13 rotates to the point where both the bottom flush outlet and the brush ring outlet are open, the pushing part 21 of the transmission component 18 and the transmission part 20 of the sliding component 19 are completely separated. The sliding component 19 does not move and the fluid channel 16 is closed. The water supply from the water tank 39 is simultaneously diverted to the brush ring pipe 34 and the flushing pipe 35, so that the two water paths can flush out water simultaneously, which meets the cleaning requirements, and there is no air mixing problem in the brush ring pipe 34.

[0081] See Figure 16 , Figure 17 When the switching component 13 rotates to the point where the bottom flush outlet is closed and the brush ring outlet is open, the transmission component 18 push part 21 only approaches the sliding component 19 transmission part 20 but does not apply a pushing force. The sliding component 19 does not move and the fluid channel 16 is closed. The water tank 39 supplies water separately to the brush ring pipe 34 to achieve normal brush ring water output, avoiding the attenuation of water flow force caused by the intake of external gas.

[0082] See Figure 18 , Figure 19 When the switching component 13 continues to rotate from the previous position, maintaining the preset position of the bottom flush outlet closed and the brush ring outlet open, the transmission component 18 overcomes the elastic force of the elastic component 27 to push the sliding component 19 and open the fluid channel 16; under the venturi negative pressure of the variable diameter section 29 of the outlet connector 28, the foam liquid in the storage box 36 and the outside atmosphere are drawn in by the negative pressure through the fluid channel 16 and the suction port 15, and mix with the water from the brush ring outlet to foam, thereby realizing the foaming of the brush ring pipe 34.

[0083] In this embodiment, the switching of three types of conventional rinsing and one type of foaming condition is achieved by the fine distinction of the rotation of the switching component 13. The pure mechanical linkage replaces the control of the on and off of the fluid channel 16 by the electronic control valve, which simplifies the system structure, reduces production and maintenance costs, and opens the liquid and air suction passage only in the foaming condition, thereby avoiding the defects of conventional brush ring mixing and power reduction from the root, and simultaneously ensuring the hydraulic performance of conventional rinsing and the cleaning effect of foam brush ring.

[0084] In this invention, the terms "first," "second," and "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0085] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0086] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A flushing switching valve, comprising a valve body, the valve body having a switching chamber and two outlets communicating therewith, the switching chamber having a switching element rotatable about its own axis to open and close the outlets, characterized in that, One of the outlets is provided with a suction port located outside the switching chamber; The valve body is also provided with a fluid channel and a transmission chamber. The transmission chamber is located on one axial side of the switching chamber and contains a transmission component that rotates coaxially with the switching component. The fluid channel is connected to the suction port and contains a movable sliding component. The sliding component is arranged opposite to the transmission component. When the transmission component rotates with the switching component to a preset position, it can form a pushing engagement with the sliding component. When the switching component rotates to open the outlet with the suction port and drives the transmission component to push against the sliding component, the sliding component moves to open the fluid channel, and the fluid is drawn into the suction port through the fluid channel.

2. The flushing switching valve as described in claim 1, characterized in that, The fluid channel is formed on the side wall of the transmission cavity and extends in a direction tangent to the rotation trajectory circle of the transmission component; the fluid channel has an opening that connects to the switching cavity; the sliding component has a transmission part that passes through the opening and is located inside the switching cavity; the transmission component has a pushing part that rotates with the transmission component to push against the transmission part and drive the sliding component to generate displacement.

3. A flushing switching valve as described in claim 2, characterized in that, The switching component includes a rotating shaft and a blocking part. The rotating shaft is rotatable about the axis of the switching cavity, and one end of it is inserted into the transmission cavity. The blocking part is fixedly connected to the rotating shaft. The transmission component is fixedly connected to the rotating shaft. The pushing part extends radially along the rotating shaft and is configured such that when the blocking part blocks the other outlet, the pushing part approaches or pushes against the transmission component.

4. A flushing switching valve as described in claim 1, characterized in that, The fluid channel has an inlet and an outlet; the inlet and the outlet are spaced apart along the extension direction of the fluid channel, and the outlet is connected to the suction port; the sliding member has a piston part, and the sliding member moves to open or close the connection between the inlet and the outlet through the piston part, so that the fluid channel opens or closes accordingly.

5. A flushing switching valve as described in claim 1, characterized in that, The fluid channel is provided with two inlet and outlet groups arranged at intervals along the extension direction of the fluid channel, each inlet and outlet group including an inlet and an outlet; the outlet is provided with two suction ports to communicate with the two outlets; the sliding member is provided with two piston parts arranged at intervals along the extension direction of the fluid channel, and when the sliding member moves, each piston part opens and closes the communication between the inlet and the outlet of the corresponding group, so that the fluid channel opens and closes accordingly.

6. A flushing switching valve as described in claim 4 or 5, characterized in that, The sliding member moves at different strokes along the extension direction of the fluid channel, and the flow area corresponding to the inlet can be changed by the piston part to adjust the opening of the inlet, thereby controlling the flow rate of the fluid drawn in through the fluid channel.

7. A flushing switching valve as described in claim 1, characterized in that, The fluid channel is also provided with an elastic element, which is located between the sliding member and the inner wall of the fluid channel to drive the sliding member to return to the position of closing the fluid channel.

8. A flushing switching valve as described in claim 1, characterized in that, The outlet is provided with an outlet connector, and the outlet connector has a variable diameter section. The suction port is located at the end with the smaller inner diameter of the variable diameter section. After the water flows through the variable diameter section and is accelerated, a negative pressure is formed around the end with the smaller inner diameter of the variable diameter section, so that the fluid passes through the fluid channel and is drawn in through the suction port.

9. A flushing assembly, comprising a brush ring pipe, a flushing pipe, and a liquid storage box; characterized in that, It also includes a flushing switching valve as described in any one of claims 1 to 8, wherein the outlet with the suction port is a brush ring outlet, and the brush ring outlet is connected to the brush ring pipe; the other outlet is a bottom flush outlet, and the bottom flush outlet is connected to the flushing pipe; the fluid channel has two inlets, and the two inlets are respectively connected to the liquid storage box and the outside atmosphere.

10. A flushing assembly as described in claim 9, characterized in that, The switching component rotates around its own axis to different positions, corresponding to different working states: When the switching component rotates to the point where the bottom flush outlet is open and the brush ring outlet is closed, the sliding component does not move and the fluid channel is closed, and the flushing pipe discharges water separately. When the switching component is rotated to the point where both the bottom flush outlet and the brush ring outlet are open, the sliding component does not move and the fluid channel is closed, and the brush ring pipe and the flushing pipe discharge water synchronously. When the switching component rotates to the point where the bottom flush outlet is closed and the brush ring outlet is open, the sliding component does not move and the fluid channel is closed, and the brush ring pipe discharges water separately. When the switching component continues to rotate to the preset position where the bottom flush outlet is closed and the brush ring outlet remains open, the transmission component pushes against the sliding component to open the fluid channel. The foam liquid in the storage box and the outside atmosphere are drawn in by negative pressure through the fluid channel and the suction port, and mix with the water from the brush ring outlet to foam, thereby realizing foaming of the brush ring pipe.

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