Switching device, liquid discharging system, and cleaning apparatus

Abstract

Disclosed in the present invention are a switching device, a liquid discharging system, and a cleaning apparatus. The present invention relates to the technical field of cleaning apparatuses, and mainly aims to improve the structural simplicity and the use reliability of a sewage discharging structure of a cleaning tray of a base station. The main technical solution of the present invention is that: the switching device comprises: a housing, wherein liquid channels and at least two first gas channels are provided on the housing; and a switching assembly, wherein at least two second gas channels are provided on the switching assembly, and the switching assembly is used for switching the communication states of the at least two second gas channels and the at least two first gas channels and controlling the opening and closing of the liquid channels.

Description

Reversing device, drainage system and cleaning equipment Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a reversing device, a liquid drainage system and a cleaning equipment. Background Art

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

[0003] In related technologies, a vacuum pump is usually used to generate negative pressure in the liquid storage tank, so that the sewage in the base station cleaning tank is sucked into the liquid storage tank, and then the sewage in the liquid storage tank is discharged through the sewage pump; or, a vacuum pump is used in conjunction with an air path reversing device to generate negative pressure in the liquid storage tank to suck the sewage in the cleaning tank into the liquid storage tank, and then the air path is converted to generate positive pressure in the liquid storage tank to discharge the sewage in the liquid storage tank.

[0004] The above methods all use more components, have more complex structures, and have lower 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 drainage structure of a base station cleaning tank.

[0006] In a first aspect, an embodiment of the present invention provides a reversing device, comprising:

[0007] a housing, wherein the housing is provided with a liquid channel and at least two first gas channels;

[0008] A switching component includes at least two second gas channels; the switching component is used to switch the communication status between the at least two second gas channels and the at least two first gas channels, and to control the opening and closing of the liquid channel.

[0009] Furthermore, the switching assembly includes a movable part, and the movable part can be movably arranged on the housing.

[0010] Furthermore, the at least two first gas channels include a first gas channel and a second gas channel; the at least two second gas channels are provided on the movable part and include a third gas channel and a fourth gas channel.

[0011] Furthermore, the movable member is used to rotate relative to the housing between a first position and a second position.

[0012] Further, 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.

[0013] 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.

[0014] Furthermore, the first liquid channel and the second liquid channel are arranged on two sides of the shell opposite to each other.

[0015] Further, when the movable member rotates from the first position to the second position or when the movable member rotates from the second position to the first position, the rotation angle of the movable member is 180°.

[0016] Furthermore, a first sealing member is provided on the housing at a position located at the first air passage, and a second sealing member is provided on the housing at a position located at the second air passage;

[0017] and / or,

[0018] A third sealing member is provided on the movable member at a position located at the third air passage, and a fourth sealing member is provided on the movable member at a position located at the fourth air passage.

[0019] Furthermore, the switching assembly also includes a movable first valve core, which is connected to the movable part and moves with the rotation of the movable part. The first valve core has a first open position to open the first liquid channel and a first closed position to close the first liquid channel.

[0020] Furthermore, the switching assembly also includes a movable second valve core, which is connected to the movable part and moves with the rotation of the movable part. The second valve core has a second open position to open the second liquid channel and a second closed position to close the second liquid channel.

[0021] Further, 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.

[0022] Furthermore, the movable part includes a movable body and a fixed part arranged on the movable body, the first valve core and the second valve core are respectively rotatably connected to the fixed part, and the movable part 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 fixed part.

[0023] Furthermore, the first valve core and the second valve core include at least an elastic part; the elastic parts of the first valve core and the second valve core can be deformed during the rotation of the movable part, and can restore the deformation when the movable part reaches the first position or the second position.

[0024] Furthermore, at least a first inlet and a first outlet are provided on one side of the housing, and the first inlet and the first outlet are connected to form the first liquid channel;

[0025] When the first valve core is in the first open position, the first inlet and the first outlet are connected, and the first liquid channel is opened; when the first valve core is in the first closed position, the first valve core blocks the first inlet, and the first liquid channel is closed.

[0026] Furthermore, the switching assembly further includes a first elastic member, which is disposed in the housing and connected to the first valve core, and is used to provide a force for the first valve core toward the first inlet.

[0027] Furthermore, the switching assembly further includes a fifth sealing member, which is disposed in the housing and is used to seal the first liquid channel.

[0028] Furthermore, the fifth sealing member includes a retractable first sealing sleeve, which is arranged in the shell 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 shell. The first sealing sleeve can retract and retract with the movement of the first valve core.

[0029] 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;

[0030] When the second valve core is in the second open position, the second inlet and the second outlet are connected, and the second liquid channel is opened. When the second valve core is in the second closed position, the second valve core blocks the second inlet, and the second liquid channel is closed.

[0031] Furthermore, the switching assembly further includes a second elastic member, which is disposed in the housing and connected to the second valve core, and is used to provide a force for the second valve core toward the second inlet.

[0032] Furthermore, the switching assembly further includes a sixth sealing member, which is disposed in the housing and is used to seal the second liquid channel.

[0033] Furthermore, the sixth sealing member includes a retractable second sealing sleeve, which is arranged in the shell 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 shell. The second sealing sleeve can retract and retract with the movement of the second valve core.

[0034] Furthermore, the first sealing sleeve or the second sealing sleeve is a bellows structure.

[0035] Furthermore, the reversing device further comprises:

[0036] At least one detecting member is disposed on the housing and is used to detect the position of the movable member.

[0037] Furthermore, the detection member includes a first detection member and a second detection member;

[0038] The movable part includes a fixed part. When the movable part is in the first position, the first detection part is triggered in correspondence with the fixed part and sends a corresponding control signal; when the movable part is in the second position, the second detection part is triggered in correspondence with the fixed part and sends a corresponding control signal.

[0039] Furthermore, the reversing device further comprises:

[0040] A driving assembly is connected to the movable member for driving the movable member to move relative to the housing.

[0041] Furthermore, the driving assembly includes a driving member and a transmission mechanism, and the driving member is used to drive the movable member to move relative to the housing through the transmission mechanism.

[0042] Furthermore, the movable parts include gears, pulleys, cams, and sprockets;

[0043] The transmission mechanism includes a worm, a gear transmission mechanism, a belt transmission mechanism or a chain transmission mechanism.

[0044] In a second aspect, an embodiment of the present invention further provides a liquid drainage system, comprising:

[0045] Gas drive unit, liquid storage tank and the aforementioned reversing device;

[0046] The reversing device generates negative pressure through the gas driving part to suck the liquid into the liquid storage tank, and generates positive pressure through the gas driving part to discharge the liquid from the liquid storage tank.

[0047] Further, at least one of the first gas channels is in communication with the liquid storage tank, and at least another one of the first gas channels is in communication with the atmosphere;

[0048] The gas driving portion includes a gas extraction port and an exhaust port; at least one of the second gas channels is connected to the gas extraction port, and at least another of the second gas channels is connected to the exhaust port;

[0049] The liquid inlet of the liquid storage tank is communicated with the cleaning portion through at least one of the liquid channels, and the liquid outlet of the liquid storage tank discharges the liquid through at least another one of the liquid channels.

[0050] In a third aspect, an embodiment of the present invention further provides a cleaning device comprising the aforementioned reversing device.

[0051] By means of the above technical solution, the present invention has at least the following beneficial effects:

[0052] In the technical solution provided by the embodiment of the present invention, the switching component can switch the connection status between at least two second gas channels and at least two first gas channels, and control the opening and closing of the liquid channel. Specifically, during 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 air 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 liquid inlet of the liquid storage tank through at least one liquid channel, and the liquid discharge port of the liquid storage tank can be connected to the floor drain through at least another liquid channel. Through the switching action of the switching component, the first gas channel connected to the liquid storage tank can be connected to the second gas channel connected to the air suction port of the vacuum pump. The first gas channel connected to the atmosphere can be connected to the second gas channel connected to the exhaust port of the vacuum pump. 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. In this way, the liquid storage tank 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 is started, a negative pressure can be formed in the liquid storage tank, and the liquid in the cleaning tank is sucked into the liquid storage tank. Correspondingly, through the switching action of the switching component, the first gas channel connected to the liquid storage tank can be connected to the second gas channel connected to the vacuum pump's exhaust port. The first gas channel connected to the atmosphere can be connected to the second gas channel connected to the vacuum pump's exhaust 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. In this way, the liquid storage tank 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 is started, a positive pressure can be formed in the liquid storage tank, and the liquid in the liquid storage tank is discharged to the floor drain. Compared with the prior art, the reversing device provided by the embodiment of the present invention can achieve simultaneous switching of the gas and liquid circuits, with a high degree of component integration, a simple structure, and improved reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The following drawings of the present invention are used as part of the embodiments of the present invention for understanding the present invention. The embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0054] In the attached figure:

[0055] FIG1 is a schematic structural diagram of a reversing device provided by an embodiment of the present invention at a first viewing angle;

[0056] FIG2 is a schematic structural diagram of a reversing device provided by an embodiment of the present invention from a second viewing angle;

[0057] FIG3 is a schematic structural diagram of a reversing device provided by an embodiment of the present invention from a third viewing angle;

[0058] FIG4 is a schematic structural diagram of a reversing device provided by an embodiment of the present invention with a bracket installed;

[0059] FIG5 is a schematic cross-sectional view taken along the line AA in FIG4 ;

[0060] FIG6 is a schematic structural diagram of the cooperation between the first liquid channel, the second liquid channel and the movable member in a reversing device provided by an embodiment of the present invention;

[0061] FIG7 is a schematic structural diagram of a detection member installed on a bracket in a reversing device provided by an embodiment of the present invention;

[0062] FIG8 is a schematic structural diagram of the cooperation between a driving assembly and a movable part of a reversing device provided by an embodiment of the present invention;

[0063] FIG9 is a schematic structural diagram of a movable part in a reversing device provided by an embodiment of the present invention from a first viewing angle;

[0064] FIG10 is a schematic structural diagram of a movable member in a reversing device provided by an embodiment of the present invention from a second viewing angle;

[0065] FIG11 is a schematic structural diagram of a liquid drainage system provided in an embodiment of the present invention.

[0066] Explanation of the accompanying drawings: 1-shell; 11-first air channel; 12-second air channel; 2-movable part; 21-third air channel; 22-fourth air channel; 23-movable body; 24-fixed part; 25-meshing teeth; 3-first liquid channel; 31-first valve core; 32-first valve body; 321-first inlet; 322-first outlet; 33-first elastic part; 34-fifth sealing part; 4-second liquid channel; 41-second valve core; 42-second valve body; 421-second inlet; 422-second outlet; 43-second elastic part; 44-sixth sealing part; 5-bracket; 51-first detection part; 52-second detection part; 6-drive assembly; 61-drive part; 62-worm; 63-second gear; 7-gas drive unit; 8-liquid storage tank; 9-cleaning tank; 10-reversing device. DETAILED DESCRIPTION

[0067] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0068] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0069] Exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of 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 to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0070] As shown in Figures 1 and 2, an embodiment of the present invention provides a reversing device, comprising a housing 1, which may be provided with a liquid channel and at least two first gas channels; a switching assembly, which may be provided with at least two second gas channels, and the switching assembly is used to switch the connection between the at least two second gas channels and the at least two first gas channels, and to control the opening and closing of the liquid channel. The switching assembly switching the connection between the at least two second gas channels and the at least two first gas channels may include: connecting any second gas channel to a different first gas channel.

[0071] In the reversing device provided in the embodiments of the present invention, the switching assembly is used to switch the communication between at least two second gas channels and at least two first gas channels, and to control the opening and closing of the liquid channels. Specifically, the switching assembly can simultaneously switch the communication between the housing 1 and the switching assembly, as well as the opening or closing of the liquid channels.

[0072] Specifically, during 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 exhaust 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 inlet of the liquid storage tank via at least one liquid channel, and the liquid outlet of the liquid storage tank can be connected to the floor drain via at least another liquid channel. By switching the switching assembly, 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 connecting 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. This allows the liquid storage tank to be connected to the vacuum pump's exhaust port, and the vacuum pump's exhaust port to be connected to the atmosphere. When the vacuum pump is activated, negative pressure is generated in the liquid storage tank, and liquid in the cleaning tank is drawn into the liquid storage tank. Accordingly, by switching the switching assembly, 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 connected to the vacuum pump exhaust 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. In this way, the liquid storage tank can be connected to the exhaust port of the vacuum pump, and the exhaust port of the vacuum pump is connected to the atmosphere. When the vacuum pump is started, a positive pressure can be formed in the liquid storage tank, and the liquid in the liquid storage tank is discharged to the floor drain. Compared with the prior art, the reversing device provided by the embodiment of the present invention can realize the simultaneous switching of the gas circuit and the liquid circuit, with a high degree of component integration and a simple structure, which improves the reliability of use.

[0073] In some embodiments, the switching assembly may include a movable member 2, which may be movably disposed on the housing 1. The at least two first gas channels may include a first gas channel 11 and a second gas channel 12; the at least two second gas channels are disposed on the movable member 2 and include a third gas channel 21 and a fourth gas channel 22; and the movable member 2 may rotate relative to the housing 1 between a first position and a second position.

[0074] In the first position, the first air channel 11 is connected to the third air channel 21 , and the second air channel 12 is connected to the fourth air channel 22 ; in the second position, the first air channel 11 is connected to the fourth air channel 22 , and the second air channel 12 is connected to the third air channel 21 .

[0075] The liquid channel may include at least a first liquid channel 3 and a second liquid channel 4; in the first position, the first liquid channel 3 is open and the second liquid channel 4 is closed; in the second position, the first liquid channel 3 is closed and the second liquid channel 4 is open.

[0076] Specifically, the first air channel 11 can be connected to the liquid storage tank, and the second air channel 12 can be connected to the atmosphere. The second air channel 12 can be connected to a pipeline and spun into the base station. The third air channel 21 is connected to the vacuum pump's suction port, and the fourth air channel 22 is connected to the vacuum pump's exhaust port. The base station cleaning tank is connected to the liquid inlet of the liquid storage tank via the first liquid channel 3, and the liquid discharge port of the liquid storage tank is connected to the floor drain via the second liquid channel 4. When the movable member 2 is controlled to rotate to the first position, the first air channel 11 is connected to the third air channel 21, the second air channel 12 is connected to the fourth air channel 22, the first liquid channel 3 is opened, the second liquid channel 4 is closed, and the liquid storage tank is connected to the vacuum pump's exhaust port. Since the vacuum pump's exhaust port is connected to the atmosphere, when the vacuum pump is started, a negative pressure can be formed in the liquid storage tank, and the liquid in the cleaning tank is sucked into the liquid storage tank; when the movable member 2 is controlled to rotate to the second position, the first air channel 11 is connected to the fourth air channel 22, the second air channel 12 is connected to the third air channel 21, the first liquid channel 3 is closed, and the second liquid channel 4 is opened. The liquid storage tank can be connected to the vacuum pump's exhaust port. Since the vacuum pump's exhaust port is connected to the atmosphere, when the vacuum pump is started, a positive pressure can be formed in the liquid storage tank, and the liquid in the liquid storage tank is discharged to the floor drain. Compared with the prior art, the reversing device provided by the embodiment of the present invention can realize simultaneous switching of the air path and the liquid path, has a high degree of component integration, a simple structure, and improved reliability.

[0077] It will be appreciated that movable member 2 is rotatably mounted on housing 1 and is configured to rotate relative to housing 1 to switch between a first position and a second position. Rotation of movable member 2 alters the positions of third air passage 21 and fourth air passage 22 to switch the communication path between housing 1 and movable member 2. This not only reduces the space available for movable member 2 and facilitates miniaturization of the reversing device, but also provides ease of operation and reliability.

[0078] 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 can be disc-shaped. Furthermore, the line connecting the third air channel 21 and the fourth air channel 22 can pass through the rotation center of the movable member 2.

[0079] Specifically, during use, the initial state can be: the movable member 2 can be in the first position, the first air channel 11 is connected to the third air channel 21, and the second air channel 12 is connected to the fourth air channel 22. That is, the liquid storage tank is connected to the vacuum pump's exhaust 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 the liquid in the liquid storage tank needs to be drained, the movable member 2 can be controlled to rotate 180 degrees relative to the housing 1, so that the movable member 2 is in the second position, the first air channel 11 is connected to the fourth air channel 22, and the second air channel 12 is connected to the third air channel 21. That is, the liquid storage tank is connected to the vacuum pump's exhaust port, the vacuum pump's exhaust port is connected to the atmosphere, the first liquid channel 3 is closed, and the second liquid channel 4 is opened. When the vacuum pump is started, positive pressure can be generated in the liquid storage tank, and the liquid in the liquid storage tank can be discharged to the floor drain. To switch to the liquid extraction state, the movable member 2 can be controlled to rotate 180 degrees relative to the housing 1 to achieve the goal of sucking the liquid in the cleaning tank into the liquid storage tank.

[0080] In some embodiments, a first seal is provided on the shell 1 at the position of the first air duct 11, and the first seal is used to seal and connect the first air duct 11 and the third air duct 21, or the first air duct 11 and the fourth air duct 22; a second seal is provided on the shell 1 at the position of the second air duct 12, and the second seal is used to seal and connect the second air duct 12 and the third air duct 21, or the second air duct 12 and the fourth air duct 22.

[0081] According to the above embodiment, the first air channel 11 and the third air channel 21, or the first air channel 11 and the fourth air channel 22, are sealed and connected via the first sealing member; the second air channel 12 and the third air channel 21, or the second air channel 12 and the fourth air channel 22, are sealed and connected via the second sealing member. This ensures the sealing of the air path, ensures the formation of positive or negative pressure within the liquid storage tank, and thus ensures smooth liquid extraction or drainage from the liquid storage tank. Specifically, both the first sealing member and the second sealing member may be sealing rings.

[0082] Alternatively, in other embodiments, a third sealing member is provided on the movable part 2 at the position of the third air duct 21, and the third sealing member is used to seal and connect the first air duct 11 and the third air duct 21, or the second air duct 12 and the third air duct 21; a fourth sealing member is provided on the movable part 2 at the position of the fourth air duct 22, and the fourth sealing member is used to seal and connect the first air duct 11 and the fourth air duct 22, or the second air duct 12 and the fourth air duct 22.

[0083] According to the above embodiment, the first air channel 11 and the third air channel 21, or the second air channel 12 and the third air channel 21, are sealed and connected via the third sealing member; and the first air channel 11 and the fourth air channel 22, or the second air channel 12 and the fourth air channel 22, are sealed and connected via the fourth sealing member. This ensures the sealing of the air path, ensures the formation of positive or negative pressure within the liquid storage tank, and thus ensures smooth liquid extraction or drainage from the liquid storage tank. Specifically, the third sealing member and the fourth sealing member can both be sealing rings.

[0084] Of course, the above two embodiments can also be combined to ensure the sealing of the gas path, thereby ensuring the formation of positive or negative pressure in the liquid storage tank, and further ensuring the smooth pumping or draining of the liquid storage tank. The specific implementation can be selected according to actual needs and this application does not limit it.

[0085] There are many ways in which the first liquid channel 3 or the second liquid channel 4 is opened or closed as the movable member 2 rotates.

[0086] To ensure reliability, in the embodiment of the present invention, referring to Figures 3, 4, and 5, the switching assembly 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 passage 3 and a first closed position that closes the first liquid passage 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.

[0087] 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, which opens the second liquid passage 4, and a second closed position, which 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.

[0088] In the above embodiment, either the first valve core 31 or the second valve core 41 is 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, thereby opening the first liquid channel 3; and the second valve core 41 is in the second closed position, thereby closing the second liquid channel 4. When the liquid in the liquid storage tank needs to be drained, the movable member 2 rotates 180° relative to the housing 1. At this time, the first valve core 31 is pushed by the movable member 2 to the first closed position, thereby closing the first liquid channel 3. Simultaneously, the second valve core 41 is pulled by the movable member 2 to the second open position, thereby opening the second liquid channel 4, allowing the liquid in the liquid storage tank to be drained to the floor drain. In other words, the movable member 2 can simultaneously switch the operating states of the first liquid channel 3 and the second liquid channel 4 by rotating 180° relative to the housing 1, making operation simple and reliable.

[0089] In some embodiments, referring to Figures 5 and 6, the movable part 2 may include a movable body 23 and a fixed part 24 arranged on the movable body 23, and the third air channel 21 and the fourth air channel 22 are arranged on the movable body 23; the first valve core 31 and the second valve core 41 are respectively rotatably connected to the fixed part 24, and the movable part 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 fixed part 24.

[0090] The third and fourth air passages 21 and 22 can be provided on a first side surface of the movable body 23; the fixing member 24 can be provided on a second side surface of the movable body 23 and can be a protruding column protruding from the second side surface; the first and second side surfaces are opposed to each other. A first sleeve ring can be provided at the end of the first valve core 31, through which the first valve core 31 is mounted on the fixing member 24; a second sleeve ring can be provided at the end of the second valve core 41, through which the second valve core 41 is mounted on the fixing member 24, so that the first and second valve cores 31 and 41 are rotatably connected to the fixing member 24.

[0091] In order to facilitate the first valve core 31 and the second valve core 41 to switch between the corresponding open position and closed position along with the movement of the movable member 2, in some embodiments, the first liquid channel 3 and the second liquid channel 4 can be arranged on opposite sides of the housing 1.

[0092] In some embodiments, the first valve core 31 and the second valve core 41 may include at least an elastic part. For example, the parts of the first valve core 31 and the second valve core 41 close to the fixed part 24 may be elastic parts; the elastic parts of the first valve core 31 and the second valve core 41 can be deformed during the movement of the movable part 2, and restore the deformation when the movable part 2 reaches the first position or the second position.

[0093] 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 be deformed by the movable member 2. After the movable member 2 rotates to its full position, the elastic portions of the first valve core 31 and the second valve core 41 can recover their deformation, allowing them to remain in their respective open or closed positions, thereby enabling the movable member 2 to drive the first valve core 31 and the second valve core 41 to switch between their respective open and closed positions.

[0094] Specifically, at least the elastic portions of the first valve core 31 and the second valve core 41 may be rod-shaped structures made of plastic. Furthermore, the thickness of the rods is set relatively thin, so that the first valve core 31 and the second valve core 41 can deform during the rotation of the movable member 2 and recover when the movable member 2 reaches the first position or the second position, thereby facilitating operation.

[0095] 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; and 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 outer 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 a guide for the movement of the first valve core 31 between the first open position and the first closed position; and the outer 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 a guide for the movement of the second valve core 41 between the second open position and the second closed position. Moreover, in order to prevent the first valve core 31 and the second valve core 41 from rotating, a clamping protrusion can be provided on the first valve core 31 and one of the hole walls of the first through hole, and a clamping groove can be provided on the other; a clamping protrusion can also be provided on the second valve core 41 and one of the hole walls of the second through hole, and a clamping groove can also be provided on the other, the clamping protrusion is clamped in the clamping groove, and the extension direction of the clamping protrusion and the clamping groove is from the first open position to the first closed position.

[0096] In some embodiments, referring to FIG. 3 , FIG. 4 and FIG. 5 , at least a first inlet 321 and a first outlet 322 may be provided on one side of the housing 1 , and the first inlet 321 and the first outlet 322 are connected to form a first liquid channel 3 .

[0097] 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. 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 opened. 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.

[0098] Specifically, during use, the first inlet 321 can be connected to the cleaning tank. The first outlet 322 can be connected to the liquid inlet of the liquid storage tank. The second inlet 421 can be connected to the liquid discharge port of the liquid 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 cleaning tank is connected to the liquid inlet of the liquid storage tank, so that the liquid in the cleaning tank can enter the liquid 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 liquid discharge port of the liquid storage tank is connected to the floor drain, so that the liquid in the liquid storage tank can be discharged to the floor drain through the second liquid channel 4.

[0099] In some embodiments, referring to Figures 5 and 6 , the switching assembly may further include a first elastic member 33 disposed within the housing 1 and connected to the first valve core 31, configured to provide a force for the first valve core 31 toward the first inlet 321, thereby improving the reliability of the first liquid passage 3. Specifically, the first valve core 31 can be driven by the movable member 2 to overcome the elastic force of the first elastic member 33 and move to the first open position, and driven by the movable member 2 and the elastic force of the first elastic member 33 to move to the first closed position. Simultaneously, due to the elastic force of the first elastic member 33, the first valve core 31 can securely block the first inlet 321, thereby improving the reliability of the first liquid passage 3. The first elastic member 33 may be a spring, and the first spring may be disposed between the housing 1 and the first valve body 32.

[0100] The switching assembly may further include a second elastic member 43 disposed within the housing 1 and connected to the second valve core 41. The second elastic member 43 is configured to provide a force for 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 be driven by the movable member 2 to overcome the elastic force of the second elastic member 43 and move to the second open position. Driven by the movable member 2 and under the elastic force of the second elastic member 43, the second valve core 41 can move to the second closed position. Simultaneously, due to the elastic force of the second elastic member 43, the second valve core 41 can securely block the second inlet 421, thereby improving the reliability of the second liquid passage 4. The second elastic member 43 may be a spring, and the second spring may be disposed between the housing 1 and the second valve body 42.

[0101] In order to prevent liquid from entering the interior of the reversing device and causing contamination or even damage to the reversing device. In some embodiments, referring to Figures 5 and 6, the switching assembly may further include a fifth seal 34, which is disposed in the housing 1 and is used to seal the first liquid channel 3 so that the liquid can only flow out through the first inlet 321 and the first outlet 322, and cannot flow to other positions of the reversing device. The switching assembly may further include a sixth seal 44, which is disposed in the housing and is used to seal the second liquid channel 4 so that the liquid can only flow through the second inlet 421 and the second outlet 422, and cannot flow to other positions of the reversing device, thereby preventing the reversing device from being contaminated or even damaged, and ensuring the normal operation of the reversing device.

[0102] In some embodiments, referring to Figures 5 and 6, the fifth sealing member 34 may include a retractable first sealing sleeve disposed within the housing 1 and sleeved over the exterior 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 of the first sealing sleeve is connected to the housing 1. The first sealing sleeve is capable of retracting and expanding with the movement of the first valve core 31. The sixth sealing member 44 includes a retractable second sealing sleeve disposed within the housing 1 and sleeved over the exterior 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 of the second sealing sleeve is connected to the housing 1. The second sealing sleeve is capable of retracting and expanding with the movement of the second valve core 41.

[0103] That is, the first sealing sleeve divides one side of the housing 1 into two isolated parts, one of which is where the first valve core 31 is located, and the other is where the first liquid channel 3 is located, thereby sealing the first liquid channel 3. The second sealing sleeve divides the other side of the housing 1 into two isolated parts, one of which is where the second valve core 41 is located, and the other is where the second liquid channel 4 is located, thereby sealing the second liquid channel 4.

[0104] 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 both can more conveniently expand and contract with the movement of the corresponding valve core while achieving a sealing effect, thereby not interfering with the movement of the valve core and ensuring the normal operation of the corresponding valve core.

[0105] In some embodiments, the reversing device also includes at least one detection member, which is arranged on the shell 1 and is used to detect the position of the movable member 2, so as to determine whether the movable member 2 is in the first position or the second position through the detection member, thereby determining whether the liquid storage tank is currently in the liquid pumping state or the liquid discharging state.

[0106] Specifically, referring to Figures 5, 6, and 7, the detection member may include a first detection member 51 and a second detection member 52. The movable member 2 includes a fixed member 24. When the movable member 2 is in the first position, the first detection member 51 is triggered in response to the fixed member 24 and emits a corresponding control signal. When the movable member 2 is in the second position, the second detection member 52 is triggered in response to the fixed member 24 and emits a corresponding control signal. Furthermore, the first detection member 51 and the second detection member 52 may be fixed to the housing 1 via a bracket 5.

[0107] According to the above embodiment, if the control system receives a control signal from the first detection member 51, it can determine that the movable member 2 is currently 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 member 52, it can determine that the movable member 2 is currently in the second position and the liquid storage tank is in the liquid draining state, thereby realizing intelligent monitoring of the operating state of the reversing device. Both the first detection member 51 and the second detection member 52 can be photointerrupters.

[0108] 8 , the reversing device may further include a drive assembly 6 , which is drivingly connected to the movable member 2 and configured to drive the movable member 2 to move relative to the housing 1 . Specifically, the drive assembly 6 is configured to drive the movable member 2 to rotate relative to the housing 1 .

[0109] 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 configured to drive the movable member 2 relative to the housing 1 via the transmission mechanism. Specifically, the drive member 61 is configured to drive the movable member 2 to rotate relative to the housing 1 via the transmission mechanism. Furthermore, 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.

[0110] Among them, the movable part 2 may include a gear, a pulley, a cam or a sprocket; the transmission mechanism may include a worm, a gear transmission mechanism, a belt transmission mechanism or a chain transmission mechanism, as long as the transmission mechanism and the movable part can cooperate with each other so that the driving part can drive the movable part 2 to rotate through the transmission mechanism.

[0111] In some embodiments, referring to Figures 8, 9 and 10, the movable part 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 driving member 61. The driving member 61 drives the first gear to rotate through the meshing connection of the worm 62 and the second gear 63, thereby driving the movable part 2 to rotate. Among them, the movable part 2 can be disc-shaped. The first gear can be annular, which can be sleeved on the outside of the movable part 2. Moreover, the first gear can include a plurality of meshing teeth 25 arranged along the circumference of the movable part 2. Of course, the first gear and the movable part 2 can be formed as one piece.

[0112] Alternatively, movable member 2 may include a first pulley; the transmission mechanism may include a second pulley and a conveyor belt, wherein the second pulley is connected to the output end of the driving member and is in transmission connection with the first pulley via the conveyor belt. The driving member drives the second pulley to rotate, so that the second pulley drives the first pulley to rotate via the conveyor belt, thereby driving the movable member 2 to rotate. The movable member 2 may be disc-shaped. The first pulley may be annular and may be sleeved onto the exterior of the movable member 2. Of course, the first pulley and movable member 2 may be integrally formed.

[0113] As shown in Figure 11, an embodiment of the present invention further provides a liquid discharge 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 a negative pressure in the liquid storage tank 8 through the gas drive unit 7 to suck the liquid into the liquid storage tank 8, and generates a positive pressure in the liquid storage tank 8 through the gas drive unit 7 to discharge the liquid from the liquid storage tank 8.

[0114] In some embodiments, at least one of the first gas channels is connected to the liquid storage tank 8, and at least another of the first gas channels is connected to the atmosphere. The gas drive unit 7 includes an air suction port and an exhaust port. At least one of the second gas channels is connected to the air suction port, and at least another of the second gas channels is connected to the exhaust port. The liquid inlet of the liquid storage tank 8 is connected to the cleaning tank 9 through at least one of the first liquid channels, and the liquid outlet of the liquid storage tank 8 discharges the liquid through at least another of the second liquid channels. The liquid outlet of the liquid storage tank 8 can be connected to a floor drain through at least another of the second liquid channels. The gas drive unit 7 can be a vacuum pump.

[0115] In the drainage system provided by an embodiment of the present invention, a switching component in a reversing device switches the first gas channel connecting the liquid storage tank 8 to the second gas channel connecting the vacuum pump exhaust port. The first gas channel connecting the atmosphere can be connected to the second gas channel connecting the vacuum pump exhaust port. The liquid channel connecting the liquid storage tank 8 and the cleaning tank 9 can be opened. The second liquid channel connecting the liquid storage tank 8 to the floor drain can be closed. This allows the liquid storage tank 8 to be connected to the vacuum pump exhaust port, and the vacuum pump exhaust port to be connected to the atmosphere. When the vacuum pump is started, a negative pressure is generated within the liquid storage tank 8, and the liquid in the cleaning tank 9 is drawn into the liquid storage tank 8. Accordingly, through the switching of the switching component, the first gas channel connecting the liquid storage tank 8 can be connected to the second gas channel connecting the vacuum pump exhaust port. The first gas channel connecting the atmosphere can be connected to the second gas channel connecting the vacuum pump exhaust port. The liquid channel connecting the liquid storage tank 8 and the cleaning tank 9 can be closed. The liquid channel connecting the liquid storage tank 8 and the floor drain can be opened. The liquid storage tank is thus connected to the exhaust port of the vacuum pump, and the vacuum pump's exhaust port is connected to the atmosphere. When the vacuum pump is activated, positive pressure is generated 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 reversing device provided by the embodiment of the present invention can achieve simultaneous switching of the gas and liquid circuits, with a high degree of component integration, a simple structure, and improved reliability.

[0116] An embodiment of the present invention further provides a cleaning device, comprising the aforementioned reversing device.

[0117] An embodiment of the present invention further provides a cleaning device. Since the cleaning device includes a reversing device, the cleaning device has all the beneficial effects of the reversing device, which will not be described in detail here.

[0118] The present invention has been described through the above-described embodiments. However, it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reversing device, characterized in that: include: a housing, wherein the housing is provided with a liquid channel and at least two first gas channels; A switching component includes at least two second gas channels; the switching component is used to switch the communication status between the at least two second gas channels and the at least two first gas channels, and to control the opening and closing of the liquid channel.

2. The reversing device according to claim 1, characterized in that: The switching assembly includes a movable part, and the movable part can be movably arranged on the housing.

3. The reversing device according to claim 2, characterized in that: The at least two first gas channels include a first gas channel and a second gas channel; the at least two second gas channels are provided on the movable part and include a third gas channel and a fourth gas channel.

4. The reversing device according to claim 2, characterized in that: The movable member is used to rotate relative to the housing between a first position and a second position.

5. The reversing device according to claim 4, characterized in that: In the first position, the first airway is in communication with the third airway, and the second airway is in communication with the fourth airway; in the second position, the first airway is in communication with the fourth airway, and the second airway is in communication with the third airway.

6. The reversing device according to claim 5, characterized in that: 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 reversing device according to claim 6, characterized in that: The first liquid channel and the second liquid channel are oppositely arranged on two sides of the shell.

8. The reversing device according to claim 4, characterized in that: When the movable member rotates from the first position to the second position or when the movable member rotates from the second position to the first position, the rotation angle of the movable member is 180°.

9. A drainage system, characterized in that: include: A gas drive unit, a liquid storage tank, and a reversing device according to any one of claims 1 to 8; The reversing device generates negative pressure through the gas driving part to suck the liquid into the liquid storage tank, and generates positive pressure through the gas driving part to discharge the liquid from the liquid storage tank.

10. A cleaning device, characterized in that: The device comprises the reversing device according to any one of claims 1 to 8.

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