Switching device, drainage system, and cleaning equipment

Abstract

This invention discloses a switching device, a drainage system, and a cleaning device. The invention relates to the field of cleaning equipment technology, and its main objective is to improve the structural simplicity and reliability of the sewage discharge structure for base station cleaning tanks. The main technical solution of this invention is as follows: The switching device includes a housing with a liquid channel and at least two first gas channels; a switching component with at least two second gas channels; the switching component is used to switch the connection state between at least two second gas channels and at least two first gas channels, and to control the opening and closing of the liquid channel.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more specifically to a reversing device, a drainage system, and a cleaning device. Prior Technology

[0002] Among the current smart cleaning robots, there is a type of robot that can automatically mop the floor. This robot generally has the function of cleaning the mop, and after the mop is cleaned, it usually needs to drain the liquid from the base station cleaning tank.

[0003] In related technologies, a vacuum pump is typically used to generate negative pressure in the storage tank, which draws the wastewater from the base station cleaning tank into the storage tank, and then the wastewater in the storage tank is discharged by a sewage pump; alternatively, a vacuum pump is used in conjunction with a gas path converter to generate negative pressure in the storage tank, which draws the wastewater from the cleaning tank into the storage tank, and then the gas path is switched to generate positive pressure in the storage tank to discharge the wastewater from the storage tank.

[0004] All of the above methods involve a large number of components, have a relatively complex structure, and have low reliability. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a reversing device, a drainage system, and a cleaning device, the main purpose of which is to improve the structural simplicity and reliability of the base station cleaning tank drainage structure.

[0006] In a first aspect, embodiments of the present invention provide a commutation device, comprising: A housing, wherein the housing is provided with a liquid channel and at least two first gas channels; A switching component, comprising at least two second gas channels; the switching component is used to switch the connection state between at least two second gas channels and at least two first gas channels, and to control the opening and closing of the liquid channel.

[0007] Furthermore, the switching component includes a movable element that can be movably disposed on the housing.

[0008] Furthermore, the at least two first gas channels include a first gas passage and a second gas passage; the at least two second gas channels are disposed on the movable member, including a third gas passage and a fourth gas passage.

[0009] Furthermore, the movable element is used to rotate relative to the housing between a first position and a second position.

[0010] Furthermore, in the first position, the first airway is connected to the third airway, and the second airway is connected to the fourth airway; in the second position, the first airway is connected to the fourth airway, and the second airway is connected to the third airway.

[0011] Furthermore, the liquid channel includes at least a first liquid channel and a second liquid channel; in the first position, the first liquid channel is open and the second liquid channel is closed; in the second position, the first liquid channel is closed and the second liquid channel is open.

[0012] Furthermore, the first liquid channel and the second liquid channel are disposed opposite to each other on both sides of the housing.

[0013] Furthermore, when the movable component rotates from the first position to the second position or from the second position to the first position, the rotation angle of the movable component is 180°.

[0014] Furthermore, a first sealing element is provided on the housing at the position of the first air passage, and a second sealing element is provided on the housing at the position of the second air passage; and / or, A third seal is provided on the movable part at the position of the third air passage, and a fourth seal is provided on the movable part at the position of the fourth air passage.

[0015] Furthermore, the switching assembly also includes a movable first valve core, which is connected to the movable member and moves with the rotation of the movable member. The first valve core has a first open position for opening the first liquid channel and a first closed position for closing the first liquid channel.

[0016] Furthermore, the switching assembly also includes a movable second valve core, which is connected to the movable member and moves with the rotation of the movable member. The second valve core has a second open position for opening the second liquid channel and a second closed position for closing the second liquid channel.

[0017] Furthermore, in the first position, the first valve core is in the first open position and the second valve core is in the second closed position; in the second position, the first valve core is in the first closed position and the second valve core is in the second open position.

[0018] Furthermore, the movable component includes a movable body and a fixing component disposed on the movable body. The first valve core and the second valve core are respectively rotatably connected to the fixing component. The movable component drives the first valve core to move between the first open position and the first closed position, and the second valve core to move between the second open position and the second closed position, through the fixing component.

[0019] Furthermore, the first valve core and the second valve core include at least an elastic portion; the elastic portion of the first valve core and the second valve core is capable of deforming during the rotation of the moving member, and recovering its deformation when the moving member reaches the first position or the second position.

[0020] Furthermore, at least one side of the shell is provided with a first inlet and a first outlet, and the first inlet and the first outlet are connected to form the first liquid channel;

[0021] When the first valve core is in the first open position, the first inlet and the first outlet are connected, and the first liquid passage is open; when the first valve core is in the first closed position, the first valve core blocks the first inlet, and the first liquid passage is closed.

[0022] Furthermore, the switching assembly also includes a first elastic element disposed within the housing and connected to the first valve core, for providing a force toward the first inlet to the first valve core.

[0023] Furthermore, the switching assembly also includes a fifth seal, which is disposed within the housing and is used to seal the first liquid channel.

[0024] Furthermore, the fifth sealing element includes a retractable first sealing sleeve, which is disposed inside the housing and sleeved on the outside of the first valve core. One end of the first sealing sleeve is connected to the first valve core, and the other end of the first sealing sleeve is connected to the housing. The first sealing sleeve can extend and retract as the first valve core moves.

[0025] Furthermore, at least a second inlet and a second outlet are provided on the other side of the housing, and the second inlet and the second outlet are connected to form the second liquid channel; When the second valve core is in the second open position, the second inlet and the second outlet are connected, and the second liquid passage is open. When the second valve core is in the second closed position, the second valve core blocks the second inlet, and the second liquid passage is closed.

[0026] Furthermore, the switching assembly also includes a second elastic element disposed within the housing and connected to the second valve core, for providing a force toward the second inlet to the second valve core.

[0027] Furthermore, the switching assembly also includes a sixth seal, which is disposed within the housing and is used to seal the second liquid channel.

[0028] Furthermore, the sixth sealing element includes a retractable second sealing sleeve, which is disposed inside the housing and sleeved on the outside of the second valve core. One end of the second sealing sleeve is connected to the second valve core, and the other end of the second sealing sleeve is connected to the housing. The second sealing sleeve can extend and retract as the second valve core moves.

[0029] Furthermore, the first sealing sleeve or the second sealing sleeve is a bellows structure.

[0030] Furthermore, the commutation device further includes:

[0031] At least one detection element is disposed in the housing for detecting the position of the moving part.

[0032] Furthermore, the detection element includes a first detection element and a second detection element; The movable component includes a fixed component. When the movable component is in the first position, the first detection component is triggered corresponding to the fixed component and sends a corresponding control signal. When the movable component is in the second position, the second detection component is triggered corresponding to the fixed component and sends a corresponding control signal.

[0033] Furthermore, the commutation device further includes: A drive assembly is connected to the movable component and is used to drive the movable component to move relative to the housing.

[0034] Furthermore, the drive assembly includes a drive member and a transmission mechanism, the drive member being used to drive the movable member to move relative to the housing via the transmission mechanism.

[0035] Furthermore, the moving parts include gears, pulleys, cams, and sprockets; The transmission mechanism includes a worm gear, a gear transmission mechanism, a belt transmission mechanism, or a chain transmission mechanism.

[0036] Secondly, embodiments of the present invention also provide a drainage system, comprising: Gas drive unit, liquid storage tank, and the aforementioned reversing device; The reversing device generates negative pressure through the gas drive unit to draw liquid into the storage tank, and generates positive pressure through the gas drive unit to discharge liquid from the storage tank.

[0037] Furthermore, at least one of the first gas channels is in communication with the liquid storage tank, and at least another of the first gas channels is in communication with the atmosphere; The gas drive unit includes an air intake port and an air exhaust port; at least one of the second gas channels is connected to the air intake port, and at least another of the second gas channels is connected to the air exhaust port. The inlet of the liquid storage tank is connected to the cleaning section through at least one of the liquid channels, and the outlet of the liquid storage tank discharges liquid through at least another of the liquid channels.

[0038] Thirdly, embodiments of the present invention also provide a cleaning device, including the aforementioned reversing device.

[0039] By employing the above technical solution, the present invention has at least the following beneficial effects:

[0040] In the technical solution provided by this invention, the switching component can switch the connection state of at least two second gas channels with at least two first gas channels, and control the opening and closing of the liquid channel. Specifically, in use, at least one first gas channel can be connected to the storage tank, and at least another first gas channel can be connected to the atmosphere. At least one second gas channel can be connected to the suction port of the vacuum pump, and at least another second gas channel can be connected to the exhaust port of the vacuum pump. The base station cleaning tank can be connected to the inlet of the storage tank through at least one liquid channel, and the drain port of the storage tank can be connected to a floor drain through at least another liquid channel. Through the switching action of the switching component, the first gas channel connecting the storage tank can be connected to the second gas channel connecting to the suction port of the vacuum pump. The first gas channel connected to the atmosphere can be connected to the second gas channel connecting to the exhaust port of the vacuum pump. The liquid channel connecting the storage tank and the cleaning tank can be opened. The liquid channel connecting the storage tank and the floor drain can be closed. Thus, the liquid storage tank can be connected to the vacuum pump's suction port, and the vacuum pump's exhaust port is connected to the atmosphere. When the vacuum pump starts, a negative pressure is formed inside the liquid storage tank, and the liquid in the cleaning tank is drawn into the liquid storage tank. Correspondingly, through the switching action of the switching component, the first gas channel connecting the liquid storage tank can be connected to the second gas channel connecting to the vacuum pump's exhaust port. The first gas channel connected to the atmosphere can be connected to the second gas channel connecting to the vacuum pump's suction port. The liquid channel connecting the liquid storage tank and the cleaning tank can be closed. The liquid channel connecting the liquid storage tank and the floor drain can be opened. Thus, the liquid storage tank can be connected to the vacuum pump's exhaust port, and the vacuum pump's suction port is connected to the atmosphere. When the vacuum pump starts, a positive pressure is formed inside the liquid storage tank, and the liquid in the liquid storage tank is discharged to the floor drain. Compared with the prior art, the switching device provided by this embodiment of the invention can realize simultaneous switching of the gas path and the liquid path, with high component integration, simple structure, and improved reliability. Simple Explanation of the Diagram

[0041] The following drawings, which are included as part of the embodiments of the present invention, are used to understand the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0042] In the attached image: Figure 1 is a structural schematic diagram of a reversing device provided in an embodiment of the present invention from a first-view perspective; Figure 2 is a structural schematic diagram of a reversing device provided in an embodiment of the present invention from a second perspective; Figure 3 is a structural schematic diagram of a reversing device provided in an embodiment of the present invention from a third-person perspective; Figure 4 is a schematic diagram of a commutation device with a bracket installed according to an embodiment of the present invention; Figure 5 is a schematic cross-sectional view along direction AA in Figure 4; Figure 6 is a schematic diagram of the structure of the first liquid channel, the second liquid channel and the moving part in a reversing device provided in an embodiment of the present invention; Figure 7 is a schematic diagram of a commutation device according to an embodiment of the present invention, in which a detection element is installed on a bracket. Figure 8 is a schematic diagram of the structure of the drive assembly and moving part of a commutation device according to an embodiment of the present invention; Figure 9 is a schematic diagram of the moving part in a reversing device according to an embodiment of the present invention from a first-view perspective. Figure 10 is a schematic diagram of the moving part in a reversing device according to an embodiment of the present invention from a second perspective. Figure 11 is a schematic diagram of a drainage system provided in an embodiment of the present invention. Implementation

[0043] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0045] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0046] As shown in Figures 1 and 2, an embodiment of the present invention provides a reversing device, including a housing 1, on which a liquid channel and at least two first gas channels may be provided; and a switching component, on which at least two second gas channels may be provided. The switching component is used to switch the connection state between at least two second gas channels and at least two first gas channels, and to control the opening and closing of the liquid channel. The switching component switching the connection state between at least two second gas channels and at least two first gas channels may include: connecting any second gas channel to a different first gas channel.

[0047] The reversing device provided in this embodiment of the invention includes a switching component used to switch the connection state between at least two second gas channels and at least two first gas channels, as well as to control the opening and closing of liquid channels. That is, the switching component can simultaneously switch the connection between the housing 1 and the switching component, as well as the opening or closing of the liquid channels.

[0048] In practical use, at least one first gas channel can be connected to the liquid storage tank, and at least another first gas channel can be connected to the atmosphere. At least one second gas channel can be connected to the vacuum pump's suction port, and at least another second gas channel can be connected to the vacuum pump's exhaust port. The base station's cleaning tank can be connected to the liquid storage tank's inlet through at least one liquid channel, and the liquid storage tank's drain port can be connected to a floor drain through at least another liquid channel. Through the switching action of the switching component, the first gas channel connecting the liquid storage tank can be connected to the second gas channel connecting to the vacuum pump's suction port. The first gas channel connected to the atmosphere can be connected to the second gas channel connecting to the vacuum pump's exhaust port. The liquid channel connecting the liquid storage tank and the cleaning tank can be opened. The liquid channel connecting the liquid storage tank and the floor drain can be closed. Thus, the liquid storage tank can be connected to the vacuum pump's suction port, and the vacuum pump's exhaust port can be connected to the atmosphere. When the vacuum pump starts, a negative pressure can be formed inside the liquid storage tank, and the liquid in the cleaning tank is drawn into the liquid storage tank; correspondingly, through the switching action of the switching component, the first gas channel connecting the liquid storage tank can be connected to the second gas channel connecting to the vacuum pump's exhaust port. The first gas passage, connected to the atmosphere, can be connected to the second gas passage, which is connected to the vacuum pump's suction port. The liquid passage connecting the storage tank and the cleaning tank can be closed. The liquid passage connecting the storage tank and the floor drain can be opened. Thus, the storage tank can be connected to the vacuum pump's exhaust port, and the vacuum pump's suction port can be connected to the atmosphere. When the vacuum pump starts, positive pressure is created inside the storage tank, and the liquid inside is discharged to the floor drain. Compared with existing technologies, the switching device provided in this embodiment of the invention can achieve simultaneous switching between the gas and liquid paths, has a high degree of component integration, a simple structure, and improved reliability.

[0049] In some embodiments, the switching component may include a movable member 2, which is movably disposed on the housing 1. At least two first gas channels may include a first gas passage 11 and a second gas passage 12; at least two second gas channels are disposed on the movable member 2 and include a third gas passage 21 and a fourth gas passage 22; the movable member 2 may rotate relative to the housing 1 between a first position and a second position.

[0050] In the first position, the first airway 11 is connected to the third airway 21, and the second airway 12 is connected to the fourth airway 22; in the second position, the first airway 11 is connected to the fourth airway 22, and the second airway 12 is connected to the third airway 21.

[0051] The liquid channel may include at least a first liquid channel 3 and a second liquid channel 4; in a first position, the first liquid channel 3 is open and the second liquid channel 4 is closed; in a second position, the first liquid channel 3 is closed and the second liquid channel 4 is open.

[0052] Specifically, the first air duct 11 can be connected to the liquid storage tank, the second air duct 12 can be connected to the atmosphere, and the second air duct 12 can be connected to a pipe and emptied into the base station. The third air duct 21 is connected to the suction port of the vacuum pump, and the fourth air duct 22 is connected to the exhaust port of the vacuum pump. The base station cleaning tank is connected to the inlet of the liquid storage tank through the first liquid channel 3, and the drain of the liquid storage tank is connected to the floor drain through the second liquid channel 4. When the control component 2 rotates to the first position, the first air passage 11 connects to the third air passage 21, the second air passage 12 connects to the fourth air passage 22, the first liquid passage 3 opens, the second liquid passage 4 closes, and the storage tank connects to the vacuum pump's suction port. Since the vacuum pump's exhaust port is connected to the atmosphere, a negative pressure can be formed in the storage tank when the vacuum pump starts, and the liquid in the cleaning tank is drawn into the storage tank. When the control component 2 rotates to the second position, the first air passage 11 connects to the fourth air passage 22, the second air passage 12 connects to the third air passage 21, the first liquid passage 3 closes, and the second liquid passage 4 opens, allowing the storage tank to connect to the vacuum pump's exhaust port. Since the vacuum pump's suction port is connected to the atmosphere, a positive pressure can be formed in the storage tank when the vacuum pump starts, and the liquid in the storage tank is discharged to the floor drain. Compared with the prior art, the switching device provided in this embodiment of the invention can achieve simultaneous switching of the air and liquid paths, has a high degree of component integration, a simple structure, and improves reliability.

[0053] It is understood that the movable part 2 can be rotatably mounted on the housing 1. The movable part 2 is used to rotate relative to the housing 1 to switch between a first position and a second position. By rotating the movable part 2, the positions of the third air passage 21 and the fourth air passage 22 are changed, thereby realizing the switching of the communication channel between the housing 1 and the movable part 2. This not only saves the moving space of the movable part 2 and facilitates the miniaturization of the reversing device, but also makes it easy to operate and reliable to use.

[0054] In some embodiments, when the movable member 2 rotates from the first position to the second position, or when the movable member 2 rotates from the second position to the first position, the rotation angle of the movable member 2 is 180°. Specifically, the movable member 2 may be disc-shaped. Moreover, the line connecting the third air passage 21 and the fourth air passage 22 passes through the rotation center of the movable member 2.

[0055] In practical use, the initial state can be as follows: the movable part 2 can be in the first position, the first air passage 11 is connected to the third air passage 21, and the second air passage 12 is connected to the fourth air passage 22. That is, the liquid storage tank is connected to the vacuum pump's suction port, the vacuum pump's exhaust port is connected to the atmosphere, the first liquid channel 3 is open, and the second liquid channel 4 is closed. When it is necessary to drain the liquid from the storage tank, the movable part 2 can be controlled to rotate 180° relative to the housing 1, so that the movable part 2 is in the second position, the first air passage 11 is connected to the fourth air passage 22, and the second air passage 12 is connected to the third air passage 21. That is, the liquid storage tank is connected to the vacuum pump's exhaust port, the vacuum pump's suction port is connected to the atmosphere, the first liquid channel 3 is closed, and the second liquid channel 4 is open. When the vacuum pump starts, positive pressure can be formed in the liquid storage tank, and the liquid in the storage tank is discharged to the floor drain. If you want to switch to the liquid extraction state, you can control the movable part 2 to rotate 180 degrees relative to the housing 1 again, which will allow the liquid in the cleaning tank to be drawn into the liquid storage tank.

[0056] In some embodiments, a first seal is provided on the housing 1 at the position of the first air passage 11, the first seal being used to seal and connect the first air passage 11 and the third air passage 21, or the first air passage 11 and the fourth air passage 22; a second seal is provided on the housing 1 at the position of the second air passage 12, the second seal being used to seal and connect the second air passage 12 and the third air passage 21, or the second air passage 12 and the fourth air passage 22.

[0057] According to the above embodiments, the first air passage 11 and the third air passage 21, or the first air passage 11 and the fourth air passage 22, are sealed and connected by a first sealing element; the second air passage 12 and the third air passage 21, or the second air passage 12 and the fourth air passage 22, are sealed and connected by a second sealing element. This ensures the airtightness of the formed air passages, ensuring the formation of positive or negative pressure within the liquid storage tank, thereby ensuring the smooth operation of liquid extraction or drainage from the liquid storage tank. Specifically, both the first and second sealing elements can be sealing rings.

[0058] Alternatively, in some other embodiments, a third seal is provided on the movable member 2 at the position of the third air passage 21, the third seal being used to seal and connect the first air passage 11 and the third air passage 21, or the second air passage 12 and the third air passage 21; a fourth seal is provided on the movable member 2 at the position of the fourth air passage 22, the fourth seal being used to seal and connect the first air passage 11 and the fourth air passage 22, or the second air passage 12 and the fourth air passage 22.

[0059] According to the above embodiments, the first air passage 11 and the third air passage 21, or the second air passage 12 and the third air passage 21, are sealed and connected by a third sealing element; the first air passage 11 and the fourth air passage 22, or the second air passage 12 and the fourth air passage 22, are sealed and connected by a fourth sealing element. This ensures the airtightness of the formed air passages, ensuring the formation of positive or negative pressure within the liquid storage tank, thereby ensuring the smooth operation of liquid extraction or drainage from the liquid storage tank. Specifically, both the third and fourth sealing elements can be sealing rings.

[0060] Of course, the two implementation methods described above can also be combined, which can also ensure the airtightness of the gas path, thereby ensuring the formation of positive or negative pressure inside the liquid storage tank, and thus ensuring the smooth pumping or draining of liquid from the tank. The specific implementation can be chosen according to actual needs, and this application does not impose any limitations.

[0061] There are multiple ways in which the first liquid channel 3 or the second liquid channel 4 can open or close with the rotation of the movable part 2.

[0062] To ensure reliable operation, in this embodiment of the invention, referring to Figures 3, 4, and 5, the switching component may further include a movable first valve core 31. The first valve core 31 is connected to the movable member 2 and moves with the rotation of the movable member 2. The first valve core 31 has a first open position that opens the first liquid channel 3 and a first closed position that closes the first liquid channel 3. When the movable member 2 is in the first position, the first valve core is in the first open position; when the movable member is in the second position, the first valve core is in the first closed position.

[0063] The switching assembly may further include a movable second valve core 41, which is connected to the movable member 2 and moves with the rotation of the movable member 2. The second valve core 41 has a second open position that opens the second liquid passage 4 and a second closed position that closes the second liquid passage 4. When the movable member 2 is in the first position, the second valve core 41 is in the second closed position; when the movable member 2 is in the second position, the second valve core 41 is in the second open position.

[0064] In the above embodiments, both the first valve core 31 and the second valve core 41 are connected to the movable member 2. During the rotation of the movable member 2 relative to the housing 1, the first valve core 31 moves between a first open position and a first closed position, and the second valve core 41 moves between a second open position and a second closed position. The initial state can be: the movable member 2 is in the first position, the first valve core 31 is in the first open position to open the first liquid channel 3; and the second valve core 41 is in the second closed position to close the second liquid channel 4. When it is necessary to drain the liquid from the storage tank, the movable member 2 rotates 180° relative to the housing 1. At this time, the first valve core 31 is pushed to the first closed position by the movable member 2 to close the first liquid channel 3; simultaneously, the second valve core 41 is pulled to the second open position by the movable member 2 to open the second liquid channel 4, allowing the liquid in the storage tank to drain to the floor drain. That is, rotating the movable member 2 180° relative to the housing 1 can simultaneously switch the working states of both the first liquid channel 3 and the second liquid channel 4, making operation simple and reliable.

[0065] In some embodiments, referring to Figures 5 and 6, the movable member 2 may include a movable body 23 and a fixing member 24 disposed on the movable body 23. The third air passage 21 and the fourth air passage 22 are disposed on the movable body 23. The first valve core 31 and the second valve core 41 are rotatably connected to the fixing member 24 respectively. The movable member 2 drives the first valve core 31 to move between the first open position and the first closed position, and the second valve core 41 to move between the second open position and the second closed position, through the fixing member 24.

[0066] The third air passage 21 and the fourth air passage 22 can be opened on the first side of the movable body 23; the fixing member 24 can be set on the second side of the movable body 23, and the fixing member 24 can be a protruding post protruding from the second side; the first side and the second side are opposite to each other. The end of the first valve core 31 can be provided with a first sleeve ring, and the first valve core 31 is sleeved on the fixing member 24 through the first sleeve ring; the end of the second valve core 41 can be provided with a second sleeve ring, and the second valve core 41 is sleeved on the fixing member 24 through the second sleeve ring, so that the first valve core 31 and the second valve core 41 are rotatably connected to the fixing member 24.

[0067] To facilitate the switching of the first valve core 31 and the second valve core 41 between their corresponding open and closed positions as the movable member 2 moves, in some embodiments, the first liquid channel 3 and the second liquid channel 4 may be disposed opposite to each other on both sides of the housing 1.

[0068] In some embodiments, the first valve core 31 and the second valve core 41 may include at least an elastic portion. For example, the portion of the first valve core 31 and the second valve core 41 near the fixing member 24 may be an elastic portion. The elastic portion of the first valve core 31 and the second valve core 41 can deform during the movement of the movable member 2 and recover its deformation when the movable member 2 reaches the first position or the second position.

[0069] In the above embodiment, during the rotation of the movable member 2, the elastic portions of the first valve core 31 and the second valve core 41 can deform under the influence of the movable member 2. After the movable member 2 has rotated to its position, the elastic portions of the first valve core 31 and the second valve core 41 can recover their deformation and remain in their respective open or closed positions, thereby enabling the movable member 2 to switch the first valve core 31 and the second valve core 41 between their respective open and closed positions.

[0070] Specifically, at least the elastic portion of the first valve core 31 and the second valve core 41 can be a rod-shaped structure made of plastic. Moreover, its thickness is set to be relatively thin, so that both can deform during the rotation of the moving part 2 and recover their deformation when the moving part 2 reaches the first position or the second position, making operation convenient.

[0071] In some embodiments, a first through hole for the first valve core 31 to pass through may be provided on one side of the housing 1; a second through hole for the second valve core 41 to pass through may be provided on the other side of the housing 1. To ensure stable movement of the first valve core 31 and the second valve core 41, the shape of the portion of the first valve core 31 that moves in the first through hole may be adapted to the shape of the first through hole, so that the first through hole provides guidance for the movement of the first valve core 31 between the first open position and the first closed position; the shape of the portion of the second valve core 41 that moves in the second through hole may be adapted to the shape of the second through hole, so that the second through hole provides guidance for the movement of the second valve core 41 between the second open position and the second closed position. Furthermore, in order to prevent the first valve core 31 and the second valve core 41 from rotating, a snap-fit ​​protrusion may be provided on one of the holes of the first valve core 31 and the first through hole, and a snap-fit ​​groove may be provided on the other; a snap-fit ​​protrusion may also be provided on one of the holes of the second valve core 41 and the second through hole, and a snap-fit ​​groove may also be provided on the other, with the snap-fit ​​protrusion snapping into the snap-fit ​​groove, and the extension direction of the snap-fit ​​protrusion and the snap-fit ​​groove being from the first open position to the first closed position.

[0072] In some embodiments, referring to Figures 3, 4 and 5, at least one side of the housing 1 may be provided with a first inlet 321 and a first outlet 322, and the first inlet 321 and the first outlet 322 are connected to form a first liquid channel 3.

[0073] When the first valve core 31 is in the first open position, the first inlet 321 and the first outlet 322 are connected, and the first liquid channel 3 is open; when the first valve core 31 is in the first closed position, the first valve core 31 blocks the first inlet 321, and the first liquid channel 3 is closed. A second inlet 421 and a second outlet 422 may be provided on the other side of the housing 1, and the second inlet 421 and the second outlet 422 are connected to form a second liquid channel 4; when the second valve core 41 is in the second open position, the second inlet 421 and the second outlet 422 are connected, and the second liquid channel 4 is open; when the second valve core 41 is in the second closed position, the second valve core 41 blocks the second inlet 421, and the second liquid channel 4 is closed.

[0074] In practical use, the first inlet 321 can be connected to the cleaning tank. The first outlet 322 can be connected to the inlet of the storage tank. The second inlet 421 can be connected to the outlet of the storage tank. The second outlet 422 is connected to the floor drain. When the movable part 2 is in the first position, the first valve core 31 is in the first open position, and the first inlet 321 and the second inlet 421 are connected. That is, the inlet of the cleaning tank is connected to the inlet of the storage tank, so that the liquid in the cleaning tank can enter the storage tank through the first liquid channel 3; at the same time, the second valve core 41 is in the second closed position, and the second valve core 41 blocks the second inlet 421. When the movable part 2 is in the second position, the first valve core 31 is in the first closed position, and the first valve core 31 blocks the first inlet 321; at the same time, the second valve core 41 is in the second open position, and the second inlet 421 and the second outlet 422 are connected. That is, the outlet of the storage tank is connected to the floor drain, so that the liquid in the storage tank can be discharged to the floor drain through the second liquid channel 4.

[0075] In some embodiments, referring to Figures 5 and 6, the switching assembly may further include a first elastic element 33, which is disposed within the housing 1 and connected to the first valve core 31. The first elastic element 33 provides a force to the first valve core 31 toward the first inlet 321, thereby improving the reliability of the first liquid channel 3. Specifically, the first valve core 31 can move to a first open position under the action of the movable element 2, overcoming the elastic force of the first elastic element 33, and then move to a first closed position under the action of the movable element 2 and the elastic force of the first elastic element 33. Simultaneously, due to the elastic force of the first elastic element 33, the first valve core 31 can securely block the first inlet 321, improving the reliability of the first liquid channel 3. The first elastic element 33 may be a spring, and the first spring may be disposed between the housing 1 and the first valve body 32.

[0076] The switching assembly may further include a second elastic element 43, which is disposed within the housing 1 and connected to the second valve core 41. The second elastic element 43 provides a force to the second valve core 41 toward the second inlet 421, thereby improving the reliability of the second liquid passage 4. Specifically, the second valve core 41 can move to the second open position under the action of the movable element 2, overcoming the elastic force of the second elastic element 43, and then move to the second closed position under the action of the movable element 2 and the elastic force of the second elastic element 43. Simultaneously, due to the elastic force of the second elastic element 43, the second valve core 41 can securely block the second inlet 421, improving the reliability of the second liquid passage 4. The second elastic element 43 can be a spring, and the second spring can be disposed between the housing 1 and the second valve body 42.

[0077] To prevent liquid from entering the reversing device and causing contamination or even damage, in some embodiments, referring to Figures 5 and 6, the switching assembly may further include a fifth seal 34 disposed within the housing 1 to seal the first liquid channel 3, allowing liquid to flow only through the first inlet 321 and the first outlet 322, preventing it from flowing to other locations on the reversing device. The switching assembly may also include a sixth seal 44 disposed within the housing to seal the second liquid channel 4, allowing liquid to flow only through the second inlet 421 and the second outlet 422, preventing it from flowing to other locations on the reversing device, thereby preventing contamination or damage to the reversing device and ensuring its normal operation.

[0078] In some embodiments, referring to Figures 5 and 6, the fifth seal 34 may include a retractable first sealing sleeve disposed within the housing 1 and fitted over the outside of the first valve core 31. One end of the first sealing sleeve is connected to the first valve core 31, and the other end is connected to the housing 1. The first sealing sleeve is capable of extending and retracting as the first valve core 31 moves. The sixth seal 44 includes a retractable second sealing sleeve disposed within the housing 1 and fitted over the outside of the second valve core 41. One end of the second sealing sleeve is connected to the second valve core 41, and the other end is connected to the housing 1. The second sealing sleeve is capable of extending and retracting as the second valve core 41 moves.

[0079] In other words, the first sealing sleeve divides one side of the housing 1 into two isolated parts: one part is where the first valve core 31 is located, and the other part is the first liquid channel 3, thus sealing the first liquid channel 3. The second sealing sleeve divides the other side of the housing 1 into two isolated parts: one part is where the second valve core 41 is located, and the other part is the second liquid channel 4, thus sealing the second liquid channel 4.

[0080] In some embodiments, referring to Figures 5 and 6, the first sealing sleeve and / or the second sealing sleeve can be a bellows structure, so that they can extend and retract more easily with the movement of the corresponding valve core while achieving the sealing function, so as not to interfere with the movement of the valve core and ensure the normal operation of the corresponding valve core.

[0081] In some embodiments, the reversing device further includes at least one detection element disposed on the housing 1 for detecting the position of the movable element 2, so as to determine whether the movable element 2 is in a first position or a second position by means of the detection element, thereby determining whether the liquid storage tank is currently in a liquid pumping state or a liquid draining state.

[0082] Specifically, referring to Figures 5, 6, and 7, the detection element may include a first detection element 51 and a second detection element 52. The movable element 2 includes a fixing element 24. When the movable element 2 is in the first position, the first detection element 51 is triggered correspondingly to the fixing element 24 and sends a corresponding control signal; when the movable element 2 is in the second position, the second detection element 52 is triggered correspondingly to the fixing element 24 and sends a corresponding control signal. Moreover, the first detection element 51 and the second detection element 52 can be fixed to the housing 1 by the bracket 5.

[0083] According to the above embodiment, if the control system receives a control signal from the first detection element 51, it can determine that the current moving part 2 is in the first position and the liquid storage tank is in the liquid pumping state; if the control system receives a control signal from the second detection element 52, it can determine that the current moving part 2 is in the second position and the liquid storage tank is in the liquid draining state, thus realizing intelligent monitoring of the working status of the reversing device. Both the first detection element 51 and the second detection element 52 can be optical interrupters.

[0084] In some embodiments, referring to FIG8, the reversing device may further include a drive assembly 6, which is drivably connected to the movable member 2 and is used to drive the movable member 2 to move relative to the housing 1. Specifically, the drive assembly 6 is used to drive the movable member 2 to rotate relative to the housing 1.

[0085] In some embodiments, referring to FIG8, the drive assembly 6 may include a drive member 61 and a transmission mechanism. The drive member 61 is used to drive the movable member 2 to move relative to the housing 1 via the transmission mechanism. Specifically, the drive member 61 is used to drive the movable member 2 to rotate relative to the housing 1 via the transmission mechanism. Moreover, one end of the transmission mechanism may be connected to the output end of the drive member 61, and the other end of the transmission mechanism may be connected to the movable member 2. The drive member 61 may be a motor.

[0086] The movable component 2 may include a gear, pulley, cam, or sprocket; the transmission mechanism may include a worm, gear transmission mechanism, belt transmission mechanism, or chain transmission mechanism, as long as the transmission mechanism and the movable component can cooperate with each other so that the driving component can drive the movable component 2 to rotate through the transmission mechanism.

[0087] In some embodiments, referring to Figures 8, 9, and 10, the movable member 2 may include a first gear; the transmission mechanism may include a worm 62 and a second gear 63. One end of the worm 62 is meshed with the first gear through the second gear 63, and the other end of the worm 62 is connected to the output end of the drive member 61. The drive member 61 drives the first gear to rotate through the meshing worm 62 and the second gear 63, thereby driving the movable member 2 to rotate. The movable member 2 may be disc-shaped. The first gear may be annular and can be fitted onto the outside of the movable member 2. Furthermore, the first gear may include a plurality of meshing teeth 25 arranged circumferentially along the movable member 2. Of course, the first gear and the movable member 2 may be integrally formed.

[0088] Alternatively, the movable component 2 may include a first pulley; the transmission mechanism may include a second pulley and a conveyor belt, with the second pulley connected to the output end of the drive component and connected to the first pulley via the conveyor belt. The drive component drives the second pulley to rotate, causing the second pulley to drive the first pulley to rotate via the conveyor belt, thereby driving the movable component 2 to rotate. The movable component 2 may be disc-shaped. The first pulley may be annular and can be fitted onto the outside of the movable component 2. Alternatively, the first pulley and the movable component 2 may be integrally formed.

[0089] As shown in Figure 11, this embodiment of the invention also provides a drainage system, including a gas drive unit 7, a liquid storage tank 8, a cleaning tank 9, and the aforementioned reversing device 10; the reversing device generates negative pressure in the liquid storage tank 8 through the gas drive unit 7 to draw liquid into the liquid storage tank 8, and generates positive pressure in the liquid storage tank 8 through the gas drive unit 7 to discharge liquid from the liquid storage tank 8.

[0090] In some embodiments, at least one of the first gas channels is in communication with the liquid storage tank 8, and at least another of the first gas channels is in communication with the atmosphere. The gas drive unit 7 includes an exhaust port and an exhaust port. At least one of the second gas channels is in communication with the exhaust port, and at least another of the second gas channels is in communication with the exhaust port. The liquid inlet of the liquid storage tank 8 is in communication with the cleaning tank 9 through at least one of the first liquid channels, and the liquid outlet of the liquid storage tank 8 discharges liquid through at least another of the second liquid channels. The liquid outlet of the liquid storage tank 8 may be in communication with a floor drain through at least another of the second liquid channels. The gas drive unit 7 may be a vacuum pump.

[0091] The drainage system provided in this embodiment of the invention, through the switching action of the switching component in the reversing device, allows the first gas channel connecting the storage tank 8 to be connected to the second gas channel connecting to the vacuum pump's exhaust port. The first gas channel connecting to the atmosphere can also be connected to the second gas channel connecting to the vacuum pump's exhaust port. The liquid channel connecting the storage tank 8 and the cleaning tank 9 can be opened. The second liquid channel connecting the storage tank 8 and the floor drain can be closed. Thus, the storage tank 8 can be connected to the vacuum pump's exhaust port, and the vacuum pump's exhaust port is connected to the atmosphere. When the vacuum pump starts, a negative pressure can be formed inside the storage tank 8, and the liquid in the cleaning tank 9 is drawn into the storage tank 8. Correspondingly, through the switching action of the switching component, the first gas channel connecting the storage tank 8 can be connected to the second gas channel connecting to the vacuum pump's exhaust port. The first gas channel connecting to the atmosphere can also be connected to the second gas channel connecting to the vacuum pump's exhaust port. The liquid channel connecting the storage tank 8 and the cleaning tank 9 can be closed. The liquid channel connecting the storage tank 8 and the floor drain can be opened. Thus, the liquid storage tank can be connected to the exhaust port of the vacuum pump, and the suction port of the vacuum pump is connected to the atmosphere. When the vacuum pump starts, positive pressure can be formed in the liquid storage tank 8, and the liquid in the liquid storage tank 8 is discharged to the floor drain. Compared with the prior art, the switching device provided by the embodiment of the present invention can realize the simultaneous switching of the gas path and the liquid path, with high component integration, simple structure, and improved reliability.

[0092] This invention also provides a cleaning device, including the aforementioned reversing device.

[0093] This invention also provides a cleaning device, which, because it includes a reversing device, has all the beneficial effects of the reversing device, and will not be described in detail here.

[0094] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0095] 1: Shell 11: First airway 12: Second airway 2: Active parts 21: Third airway 22: Fourth airway 23: Activity Body 24: Fasteners 25: Meshing teeth 3: First liquid channel 31: First valve core 32: First valve body 321: First Import 322: First Exit 33: First elastic element 34: Fifth seal 4: Second liquid channel 41: Second valve core 42: Second valve body 421: Second Import 422: Second Exit 43: Second elastic element 44: Sixth seal 5: Bracket 51: First inspection piece 52: Second inspection piece 6: Driver Components 61: Drive components 62: Worm gear 63: Second Gear 7: Gas-driven unit 8:Liquid storage tank 9: Cleaning tank 10: Commutation device

Claims

1. A commutation device, comprising: A housing having a liquid passage and at least two first gas passages; A switching component, the switching component including at least two second gas channels; The switching component is used to switch the connection status between at least two of the second gas channels and at least two of the first gas channels, and to control the opening and closing of the liquid channel.

2. The commutation device according to claim 1, wherein, The switching component includes a movable element that is movably mounted on the housing.

3. The commutation device according to claim 2, wherein, The at least two first gas channels include a first gas passage and a second gas passage; the at least two second gas channels are disposed on the movable member, including a third gas passage and a fourth gas passage.

4. The commutation device according to claim 3, wherein, The movable component is used to rotate relative to the housing between a first position and a second position.

5. The commutation device according to claim 4, wherein, In the first position, the first airway is connected to the third airway, and the second airway is connected to the fourth airway; in the second position, the first airway is connected to the fourth airway, and the second airway is connected to the third airway.

6. The commutation device according to claim 5, wherein, The liquid channel includes at least a first liquid channel and a second liquid channel; in the first position, the first liquid channel is open and the second liquid channel is closed; in the second position, the first liquid channel is closed and the second liquid channel is open.

7. The commutation device according to claim 6, wherein, The first liquid channel and the second liquid channel are disposed opposite to each other on both sides of the housing.

8. The commutation device according to claim 4, wherein, When the movable part rotates from the first position to the second position or from the second position to the first position, the rotation angle of the movable part is 180°.

9. A type of drainage system, including: Gas drive unit, liquid storage tank and reversing device as claimed in any one of claims 1 to 8; The reversing device generates negative pressure through the gas drive unit to draw liquid into the storage tank, and generates positive pressure through the gas drive unit to discharge liquid from the storage tank.

10. A cleaning device comprising a reversing device as described in any one of claims 1 to 8.

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