Valve body structure and cleaning system

Abstract

A valve body structure and a cleaning system. The valve body structure comprises a valve body (1000) and a drive assembly (300). The valve body (1000) is provided with a first air duct port (110) and a second air duct port (120). The first air duct port (110) is configured to be in communication with a negative pressure generator. The second air duct port (120) is configured to be in communication with an external device. The first air duct port (110) and the second air duct port (120) have a communicated state and a cut-off state. The drive assembly (300) is in driving connection with the valve body (1000). In response to driving by the drive assembly (300), the valve body (1000) switches between the communicated state and the cut-off state of the first air duct port (110) and the second air duct port (120). When the first air duct port (110) and the second air duct port (120) are in the communicated state, the valve body (1000) is provided with a first inner air duct enabling the negative pressure generator to be in communication with the external device.

Description

Valve body structure and cleaning system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application No. 2023117158632, filed on December 13, 2023, the entire contents of which are incorporated by reference into this disclosure.

[0003] This disclosure claims priority to Chinese patent application No. 2023117742648 filed on December 21, 2023, the entire contents of which are incorporated by reference into this disclosure.

[0004] This disclosure claims priority to Chinese patent application No. 2024214040094, filed on June 18, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0005] The present disclosure relates to the technical field of cleaning equipment, and in particular to a valve body structure and a cleaning system. Background Art

[0006] Cleaning equipment is used to clean a target area. It includes a fan that draws external waste into the device. To facilitate charging and emptying stored waste, cleaning equipment is typically equipped with a base station.

[0007] In existing technology, base stations are equipped with negative pressure devices to draw dirt from the cleaning equipment into the base station, thereby clearing the dirt from the cleaning equipment. While this negative pressure device solves the problem of suctioning dirt, it significantly increases the structural complexity and production cost of the base station. Therefore, it is necessary to improve the existing technology to overcome the aforementioned shortcomings.

[0008] Public content

[0009] Therefore, the technical problem to be solved by the present disclosure is to provide a valve body structure and a cleaning system that can automatically switch air ducts.

[0010] To solve the above technical problems, the present disclosure provides a valve body structure, comprising: a valve body having a first air duct opening and a second air duct opening, wherein the first air duct opening is configured to communicate with a negative pressure generator, and the second air duct opening is configured to communicate with an external device, and the first air duct opening and the second air duct opening have a connected state and a cut-off state; a drive assembly drivingly connected to the valve body;

[0011] In which, the valve body switches the connection state and the cut-off state between the first air duct opening and the second air duct opening in response to the drive of the drive component. When the first air duct opening and the second air duct opening are in the connection state, the valve body has a first internal air duct that connects the negative pressure generator and the external device.

[0012] Preferably, the valve body comprises: a valve body having a receiving cavity, wherein the first air duct opening and the second air duct opening communicating with the receiving cavity are provided on a wall surface of the valve body;

[0013] a valve core movably disposed in the receiving cavity and cooperating with the first air duct opening and the second air duct opening;

[0014] The driving assembly is connected to the valve core and is used to drive the valve core to rotate, so that the valve core changes its position in the receiving cavity in response to the driving of the driving assembly, thereby realizing the switching of the on-off state between the first air duct opening and the second air duct opening.

[0015] Preferably, a third air duct opening is further provided on the wall surface of the valve body, the third air duct opening being configured to communicate with a dirt collection container, and the valve core is configured to enable the first air duct opening to communicate with either the second air duct opening or the third air duct opening;

[0016] Wherein, when the first air duct opening and the third air duct opening are in a communicating state, the valve body has a second inner air duct that enables the negative pressure generator and the dirt collection container to communicate with each other.

[0017] Preferably, the first air duct opening, the second air duct opening and the third air duct opening are arranged on the circumferential wall surface of the valve body, wherein the first air duct opening, the second air duct opening and the third air duct opening are respectively spaced apart along the circumference of the valve core.

[0018] Preferably, the second air duct opening and the third air duct opening are staggered along the axial direction of the valve core.

[0019] Preferably, the first air duct opening is located between the second air duct opening and the third air duct opening along the axial direction of the valve core, wherein the first air duct opening and the third air duct opening at least partially overlap in the axial direction of the valve core.

[0020] Preferably, the valve core is in a hollow cylindrical shape, and a first communication port and a second communication port are provided on a circumferential wall surface of the valve core, the first communication port and the second communication port are respectively communicated with the hollow cavity of the valve core, and the first communication port and the second communication port are independent of each other;

[0021] Wherein, the first communication port is always connected to the first air duct port, the first communication port is intermittently connected to the third air duct port, and the second communication port is intermittently connected to the second air duct port;

[0022] The first communication port and the second communication port change their positions relative to the second air duct port and the third air duct port along the circumferential direction of the valve core in response to the driving of the driving component, so that the first air duct port is connected to either the second air duct port or the third air duct port.

[0023] Preferably, the first communication port and the second communication port are staggered along the axial direction of the valve core, and a central angle corresponding to the first communication port is greater than a central angle corresponding to the second communication port.

[0024] Preferably, the valve core is provided in a split manner in the axial direction, including a first valve core portion and a second valve core portion, one of the first valve core portion and the second valve core portion is in transmission connection with the drive assembly, the first valve core portion and the second valve core portion respectively have a butt joint end, a convex portion extending along the axial direction of the valve core is provided on the butt joint end of one of the first valve core portion and the second valve core portion, and a groove cooperating with the convex portion is provided on the butt joint end of the other of the first valve core portion and the second valve core portion;

[0025] The first communication port is located on the circumferential wall surface of the first valve core portion, and the second communication port is located on the circumferential wall surface of the second valve core portion.

[0026] Preferably, a first sealing member and a second sealing member are further provided on the circumferential wall surface of the valve core, wherein the first sealing member and the first communication port are adjacently distributed in the circumferential direction and are flushly arranged in the axial direction, and the second sealing member and the second communication port are adjacently distributed in the circumferential direction and are flushly arranged in the axial direction;

[0027] Wherein, the first sealing member is configured to seal the third air duct opening, and the second sealing member is configured to seal the second air duct opening.

[0028] Preferably, the valve core has a first shaft segment and a second shaft segment supported on the valve body and coaxially disposed at both ends thereof, the first shaft segment and the second shaft segment being arranged in opposite directions along the axial direction of the valve core, wherein the first shaft segment is in transmission connection with the drive assembly to drive the valve core to rotate within the receiving chamber;

[0029] Wherein, the driving assembly has an output shaft, the output shaft is transmission-connected to the first shaft segment, and the output shaft is parallel or perpendicular to the first shaft segment.

[0030] Preferably, a plane bearing is provided between at least one end of the valve core and the cavity wall of the accommodating cavity, wherein a bearing mounting structure is provided on one of the end of the valve core and the cavity wall of the accommodating cavity.

[0031] Preferably, the bearing mounting structure is a groove formed on the end of the valve core or on the cavity wall of the accommodating cavity.

[0032] The present disclosure also provides a cleaning system, comprising: a base station; a cleaning device, provided with a negative pressure generator and a dirt collection container, the cleaning device being adapted to the base station; wherein the cleaning device is provided with a valve body structure, the valve body structure being located between the negative pressure generator and the dirt collection container, the valve body structure being configured to selectively connect the negative pressure generator to one of the dirt collection container and the base station, so that the negative pressure generator can act on one of the dirt collection container and the base station; wherein the valve body structure is the valve body structure described above.

[0033] The technical solution provided by this disclosure has the following advantages:

[0034] The valve body structure can automatically switch the air duct inside the valve body, thereby selectively connecting the negative pressure generator to one of the waste collection container and the base station, so that the negative pressure generator can act on one of the waste collection container and the base station, reducing the number of negative pressure devices used, thereby simplifying the overall structure of the base station, facilitating installation and maintenance, and reducing production costs.

[0035] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] FIG1 is a schematic diagram of the three-dimensional structure of the cleaning system provided by the present disclosure;

[0038] FIG2 is a schematic diagram of the three-dimensional structure of the cleaning device provided by the present disclosure;

[0039] FIG3 is a schematic diagram of the exploded structure of FIG2 ;

[0040] FIG4 is a schematic diagram of the three-dimensional structure of a base station equipped with a sewage tank and a clean water tank;

[0041] FIG5 is a schematic diagram of the three-dimensional structure of the base station when there is no clean water tank;

[0042] FIG6 is a schematic cross-sectional view of the structure of FIG5 ;

[0043] FIG7 is a schematic diagram of a three-dimensional structure of a valve body;

[0044] FIG8 is a second schematic diagram of the three-dimensional structure of the valve body;

[0045] Figure 9 is a third schematic diagram of the three-dimensional structure of the valve body;

[0046] Figure 10 is a schematic diagram of the cross-sectional structure of the valve body;

[0047] FIG11 is a schematic diagram of a three-dimensional structure of a valve core;

[0048] FIG12 is a second schematic diagram of the three-dimensional structure of the valve core;

[0049] FIG13 is a third schematic diagram of the three-dimensional structure of the valve core;

[0050] FIG14 is a schematic diagram of the exploded structure of FIG13;

[0051] FIG15 is a schematic diagram of the exploded structure between the plane bearing and the valve core. DETAILED DESCRIPTION

[0052] The technical solutions of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other unless there is a conflict.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0054] In the present disclosure, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present disclosure.

[0055] As shown in Figures 1 to 3, the present disclosure discloses a cleaning system, comprising a base station 3000 and a cleaning device 2000, wherein the cleaning device 2000 is adapted to the base station 3000. The cleaning device 2000 is provided with a negative pressure generator 2001, a valve structure, and a waste collection container 2002. The valve structure is located between the negative pressure generator 2001 and the waste collection container 2002. The valve structure is configured to selectively connect the negative pressure generator 2001 to either the waste collection container 2002 or the base station 3000, so that the negative pressure generator 2001 can act on either the waste collection container 2002 or the base station 3000, thereby creating a negative pressure state in either the waste collection container 2002 or the base station 3000.

[0056] That is to say, under the action of the valve body structure, the negative pressure generator 2001 can form a fluid connection with the waste collection container 2002 , or the negative pressure generator 2001 can form a fluid connection with the base station 3000 .

[0057] Specifically, the ability of the negative pressure generator 2001 to establish fluid communication with the waste collection container 2002 means that the negative pressure generator 2001 can cause external waste (such as waste on the target site and waste generated by self-cleaning) to be drawn into the waste collection container 2002 under the action of negative pressure. The ability of the negative pressure generator 2001 to establish fluid communication with the base station 3000 means that an airflow path is formed between the negative pressure generator 2001 and the base station 3000.

[0058] In one application scenario, the cleaning device 2000 is a floor scrubber, and the base station 3000 is a base station compatible with the floor scrubber. It is understandable that the cleaning device 2000 can also be other types of cleaning devices, such as a vacuum cleaner. In this case, the base station is a base station compatible with the vacuum cleaner. Of course, the cleaning device 2000 includes but is not limited to floor scrubbers and vacuum cleaners, and can also be other cleaning devices, such as window cleaning machines, sweeping robots, etc. The following description takes the cleaning device 2000 as an example of a floor scrubber, and the base station 3000 is a base station compatible with the floor scrubber, wherein the negative pressure generator 2001 can be understood as a fan, and the dirt collection container 2002 can be understood as a sewage tank of the floor scrubber.

[0059] The floor scrubber includes a floor brush assembly 2003 and a body 2004 pivotally connected to the floor brush assembly 2003. The body 2004 is equipped with a negative pressure generator 2001, a dirt collection container 2002, and a floor scrubber clean water tank 2005. The floor scrubber has two states: a docking state for docking with the base station 3000 and an operating state for performing cleaning tasks. When the floor scrubber is in the operating state, the floor scrubber clean water tank 2005 can deliver cleaning fluid to the floor brush assembly 2003 to wet the roller brush. The dirt collection container 2002 is used to store dirt sucked in during the cleaning process. In the operating state, as the floor scrubber moves to the target site, the negative pressure generator 2001, through the floor brush assembly 2003, can draw dirt from the floor into the dirt collection container 2002, thereby achieving the purpose of cleaning.

[0060] In one embodiment, as shown in FIG4 , a base station 3000 includes a base station carrier 3100, a base station sewage tank 3200, and a base station clean water tank 3300. The base station sewage tank 3200 and the base station clean water tank 3300 are disposed on the base station carrier 3100. The base station sewage tank 3200 and the base station clean water tank 3300 can be fixed to the base station carrier 3100 or can be detachably disposed.

[0061] The base station sewage tank 3200 can be connected to the base station sewage pipe 3700. The base station sewage pipe 3700 can be set according to actual conditions. For example, when the base station sewage tank 3200 is fixedly installed on the base station carrier 3100, preferably, the base station sewage tank 3200 is connected to the base station sewage pipe 3700. When the base station sewage tank 3200 is detachably installed on the base station carrier 3100, the base station sewage pipe 3700 may or may not be installed.

[0062] A cleaning tray 3400 is formed at the lower part of the base station carrier 3100, and a cleaning groove 3410 is provided on the cleaning tray 3400. When the floor scrubber is docked with the base station 3000, the roller brush of the floor brush assembly of the floor scrubber is located in the cleaning groove 3410, and the cleaning groove 3410 provides an operating space for cleaning and drying the roller brush.

[0063] The housing of the body 2004 is provided with a sewage discharge port (not shown) capable of communicating with the waste collection container 2002, and a body docking port 2006 capable of communicating with the negative pressure generator 2001 via a valve structure. The housing of the base station 3000 is provided with a sewage extraction port 3600 for docking with the sewage discharge port, and a base station suction port 3500 for sealingly docking with the body docking port 2006. The base station suction port 3500 and sewage extraction port 3600 are respectively connected to the base station sewage tank 3200.

[0064] Specifically, a first channel and a second channel are provided inside the base station carrier 3100. The first channel is used to connect the base station suction port 3500 and the base station sewage tank 3200, and the second channel is used to connect the sewage extraction interface 3600 and the base station sewage tank 3200. The first channel is used for gas circulation, and the second channel is used for sewage flow.

[0065] When the scrubber is docked with the base station 3000, the drain port of the scrubber is connected to the sewage extraction port 3600, and the docking port 2006 of the scrubber body is connected to the suction port 3500 of the base station. At this time, the negative pressure generator 2001 acts on the base station 3000 through the valve body structure.

[0066] When the negative pressure generator 2001 acts on the base station 3000, a fluid connection is formed between the negative pressure generator 2001 and the base station sewage tank 3200. At this time, the base station sewage tank 3200 is in a negative pressure state, and the dirt in the dirt collection container 2002 enters the base station sewage tank 3200 through the sewage discharge interface, the sewage extraction interface 3600 and the second channel of the floor scrubber in turn, thereby achieving that the base station 3000 is not equipped with a negative pressure device and can automatically recycle the dirt in the dirt collection container 2002 to the base station 3000, reducing the number of negative pressure devices used, thereby simplifying the structure of the base station, facilitating installation and maintenance, and reducing production costs.

[0067] It is worth noting that when negative pressure generator 2001 acts on base station 3000, the negative pressure generated by negative pressure generator 2001 can also act on base station sewage pipe 3700. Base station sewage pipe 3700 is connected to base station sewage tank 3200. Negative pressure generator 2001 can generate negative pressure in base station sewage pipe 3700, thereby sucking waste from waste collection container 2002 into base station 3000 and then discharging it to the outside through base station sewage pipe 3700. In this solution, base station suction port 3500 is not directly connected to base station sewage tank 3200, but is connected to base station sewage pipe 3700.

[0068] In another embodiment, as shown in Figures 5 and 6 , base station 3000 includes a base station carrier 3100 and a base station wastewater tank 3200 , with base station wastewater tank 3200 mounted on base station carrier 3100. In this embodiment, base station 3000 does not include a base station fresh water tank 3300 . Instead, base station carrier 3100 is connected to an external water source via a water inlet pipe (not shown). When the scrubber's fresh water tank 2005 needs to be replenished, base station 3000 refills the tank through the water inlet pipe. This "external water source" can be municipal water or other sources.

[0069] In another embodiment, the base station 3000 is provided with a base station sewage pipe 3700 and a water inlet pipe (not shown), but without a base station sewage tank 3200 and a base station fresh water tank 3300. The structure of the base station 3000 is relatively simple.

[0070] When the base station 3000 is provided with a base station sewage tank 3200, after the floor scrubber is docked with the base station 3000, the negative pressure generator 2001 of the floor scrubber acts on the base station sewage tank 3200, the base station sewage tank 3200 is in a negative pressure state, and the dirt in the dirt collection container 2002 is sucked into the base station sewage tank 3200.

[0071] When the base station 3000 is not equipped with a base station sewage tank 3200, after the floor scrubber is docked with the base station 3000, the negative pressure generator 2001 of the floor scrubber acts on the base station sewage pipe 3700, the base station sewage pipe 3700 is in a negative pressure state, and the sewage in the sewage collection container 2002 is sucked into the base station sewage pipe 3700.

[0072] Regarding the valve body structure, as shown in Figures 7 to 10 , the valve body structure includes a valve body 1000 and a drive assembly 300. The drive assembly 300 is drivingly connected to the valve body 1000 and is used to change the passage state of the valve body 1000. The passage state of the valve body 1000 includes a first passage state when the negative pressure generator 2001 is in communication with the base station 3000, and a second passage state when the negative pressure generator 2001 is in communication with the waste collection container 2002.

[0073] When the valve body 1000 is in the first access state, the negative pressure generator 2001 communicates with the base station 3000, creating a negative pressure state in the base station 3000. When the valve body 1000 is in the second access state, the negative pressure generator 2001 communicates with the waste collection container 2002, creating a negative pressure state in the waste collection container 2002. The drive assembly 300 drives the valve body 1000 to switch between the first and second access states, thereby creating a negative pressure state in either the waste collection container 2002 or the base station 3000.

[0074] Furthermore, the valve body 1000 includes a valve body 100 and a valve core 200. The valve body 100 has a receiving cavity. The wall surface of the valve body 100 is provided with a first air duct opening 110, a second air duct opening 120, and a third air duct opening 130 that communicate with the receiving cavity. The drive assembly 300 is connected to the valve core 200 and is used to drive the valve core 200 to rotate, so that the valve core 200 rotates within the receiving cavity.

[0075] As shown in Figures 11 and 12, the valve core 200 has a first shaft segment M and a second shaft segment N on both ends, which are supported on the valve body 100 and are coaxial. The first shaft segment M and the second shaft segment N are arranged in opposite directions along the axial direction of the valve core 200. The first shaft segment M is drivingly connected to the drive assembly 300. The drive assembly 300 has an output shaft, which is drivingly connected to the first shaft segment M. The output shaft is parallel or perpendicular to the first shaft segment M to drive the valve core 200 to rotate within the receiving chamber.

[0076] The valve core 200 cooperates with the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130. In response to the driving of the driving assembly 300, the valve core 200 changes its position within the receiving chamber to change the on-off relationship between the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130, so that the first air duct opening 110 is connected to the second air duct opening 120 or the third air duct opening 130. The above-mentioned "selective connection" means that the first air duct opening 110 is connected to the second air duct opening 120, or the first air duct opening 110 is connected to the third air duct opening 130.

[0077] The first air duct opening 110 is used to communicate with the negative pressure generator 2001, the second air duct opening 120 is used to communicate with the base station 3000 through the fuselage docking port 2006, and the third air duct opening 130 is used to communicate with the waste collection container 2002. It is understood that the second air duct opening 120 can also be connected to other external devices through the fuselage docking port 2006, including but not limited to base stations.

[0078] The first air duct opening 110 and the second air duct opening 120 are in a connected state and a blocked state. Similarly, the first air duct opening 110 and the third air duct opening 130 are in a connected state and a blocked state. In response to the driving of the driving assembly 300, the valve body 1000 switches the open and closed states between the first air duct opening 110 and the second air duct opening 120, and between the first air duct opening 110 and the third air duct opening 130.

[0079] When the valve body 1000 is in the first passage state, the first air duct opening 110 and the second air duct opening 120 are in a connected state, the first air duct opening 110 and the third air duct opening 130 are in a cut-off state, and the negative pressure generator 2001 is connected to the base station 3000. At this time, the valve body 1000 has a first internal air duct that connects the negative pressure generator and the base station 3000.

[0080] When the valve body 1000 is in the second passage state, the first air duct opening 110 and the third air duct opening 130 are in a connected state, the first air duct opening 110 and the second air duct opening 120 are in a cut-off state, and the negative pressure generator 2001 is connected to the dirt collection container 2002. At this time, the valve body 1000 has a second internal air duct that connects the negative pressure generator 2001 and the dirt collection container 2002.

[0081] Furthermore, the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130 are disposed on the circumferential wall surface of the valve body 100. The first air duct opening 110, the second air duct opening 120, and the third air duct opening 130 are spaced apart along the circumference of the valve core 200. The "circumferential wall surface of the valve body 100" referred to above refers to the wall surface of the valve body 100 located in the circumferential direction of the valve core 200. The circumferential wall surface of the valve body 100 can be a circular surface or a surface having a triangular, quadrilateral, or other cross-sectional shape. The external shape of the valve body 100 is not limited.

[0082] In one embodiment, the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130 are located in the same circumferential direction. That is, in the axial direction of the valve core 200, the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130 are aligned with each other without any spacing. In another embodiment, the second air duct opening 120 and the third air duct opening 130 are staggered along the axial direction of the valve core 200. The following uses the staggered distribution of the second air duct opening 120 and the third air duct opening 130 along the axial direction of the valve core 200 as an example for explanation.

[0083] Specifically, the first air duct opening 110 is located between the second air duct opening 120 and the third air duct opening 130 along the axial direction of the valve core 200. This avoids the problem of an excessively long passage between the second air duct opening 120 or the third air duct opening 130 and the first air duct opening 110. In other words, the arrangement of the first air duct opening 110 between the second air duct opening 120 and the third air duct opening 130 facilitates communication among the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130.

[0084] To improve the floor scrubber's dirt suction capability, the first air duct opening 110 and the third air duct opening 130 at least partially overlap in the axial direction of the valve core 200. That is, the third air duct opening 130 is located closer to the first air duct opening 110 in the axial direction of the valve core 200. This shortens the path between the third air duct opening 130 and the first air duct opening 110, reduces wind resistance, and generates a strong negative pressure suction force on the dirt collection container 2002, effectively drawing external dirt into the dirt collection container 2002 and achieving a good dirt suction effect.

[0085] As shown in Figures 11 to 14, the valve core 200 is in the shape of a hollow cylinder. A first communication port 211 and a second communication port 221 are provided on the circumferential wall surface of the valve core 200. The first communication port 211 and the second communication port 221 are respectively connected to the hollow cavity of the valve core 200, and the first communication port 211 and the second communication port 221 are independent of each other. The "circumferential wall surface of the valve core 200" mentioned above is preferably a wall surface located in the circumferential direction of the valve core 200. The above-mentioned "the first communication port 211 and the second communication port 221 are independent of each other" means that there is no intersection between the first communication port 211 and the second communication port 221.

[0086] Specifically, when the first air duct opening 110 is connected to the second air duct opening 120 , the third air duct opening 130 is closed by the circumferential wall of the valve core 200 ; when the first air duct opening 110 is connected to the third air duct opening 130 , the second air duct opening 120 is closed by the circumferential wall of the valve core 200 .

[0087] The first communication port 211 is always in communication with the first air duct port 110, the first communication port 211 is intermittently in communication with the third air duct port 130, and the second communication port 221 is intermittently in communication with the second air duct port 120. The first communication port 211 and the second communication port 221 are staggered along the axial direction of the valve core 200, and the central angle corresponding to the first communication port 211 is greater than the central angle corresponding to the second communication port 221.

[0088] In one embodiment, a partition column 212 may be provided within the first communication port 211 to separate the first communication port 211 into two adjacent portions, comprising a first portion and a second portion. The two portions are connected in the following manner: in the first case, the first portion is connected to the first air duct port 110, and the second portion is connected to the third air duct port 130. In this case, the negative pressure generator 2001 is in communication with the waste collection container 2002. In the second case, the valve core 200 is rotated to connect the second portion to the first air duct port 110, and the circumference of the valve core 200 avoids blocking the third air duct port 130. In this case, the negative pressure generator 2001 is in communication with the second air duct port 120 via the second communication port 221.

[0089] From the above, it can be seen that the first connecting port 211 and the second connecting port 221 change their positions relative to the second air duct port and the third air duct port along the circumference of the valve core 200 in response to the drive of the drive assembly 300, so that the first air duct port 110 is connected to either the second air duct port 120 or the third air duct port 130.

[0090] When the first air duct opening 110 is connected to the second air duct opening 120, the first internal air duct of the valve body 1000 is formed by the second air duct opening 120, the second connecting opening 221, the hollow cavity of the valve core 200, the first connecting opening 211, and the first air duct opening 110 being connected in sequence; when the first air duct opening 110 is connected to the third air duct opening 130, the second internal air duct of the valve body 1000 is formed by the third air duct opening 130, the first connecting opening 211, the hollow cavity of the valve core 200, and the first air duct opening 110 being connected in sequence.

[0091] Furthermore, the valve core 200 is divided into two parts in its axial direction, including a first valve core part 210 and a second valve core part 220 , and one of the first valve core part 210 and the second valve core part 220 is transmission-connected to the driving assembly 300 .

[0092] As shown in FIG14 , the first valve core portion 210 and the second valve core portion 220 each have a butt joint. One of the butt joints 210 and 220 is provided with a protrusion 223 extending axially along the valve core 200, while the other is provided with a groove 213 that mates with the protrusion 223. The first communication port 211 is located on the circumferential wall of the first valve core portion 210, and the second communication port 221 is located on the circumferential wall of the second valve core portion 220.

[0093] 13 and 14 , a first sealing member 500 and a second sealing member 510 are provided on the circumferential wall of the valve core 200. The first sealing member 500 and the second sealing member 510 can be rubber pads or other flexible materials.

[0094] Specifically, the first seal 500 is circumferentially adjacent to the first communication port 211 and axially flush with the second seal 510. The second seal 510 is circumferentially adjacent to the second communication port 221 and axially flush with the second communication port 221. The first seal 500 is used to seal the third air duct port 130, and the second seal 510 is used to seal the second air duct port 120. The aforementioned "flush arrangement" means that there is no spacing between the first seal 500 and the first communication port 211 in the axial direction of the valve core 200, and there is no spacing between the second seal 510 and the second communication port 221 in the axial direction of the valve core 200.

[0095] The valve core 200 has a first position when the first air duct opening 110 is connected to the second air duct opening 120 and the first air duct opening 110 is disconnected from the third air duct opening 130, and a second position when the first air duct opening 110 is disconnected from the second air duct opening 120 and the first air duct opening 110 is connected to the third air duct opening 130. As shown in FIG7 , a rotation limiter 400 is provided between the valve core 200 and the valve body 100 to define the first and second positions of the valve core 200.

[0096] The rotation limit unit 400 includes an actuator block 410 disposed on the end surface of the valve core 200 and extending axially along the valve core 200, and a pair of limit switches 420 disposed on the outer side of the end of the valve body 100 and cooperating with the actuator block 410. The end of the valve body 100 is provided with a through-hole 140 for allowing the actuator block 410 to pass through to the outside of the valve body 100. The pair of limit switches 420 are configured to define two extreme motion positions of the actuator block 410, thereby defining the first and second positions of the valve core 200.

[0097] Furthermore, as shown in Figures 13 to 15 , a planar bearing 600 is disposed between at least one end of the valve core 200 and the wall of the receiving cavity of the valve body 100. A bearing mounting structure is provided on either the end of the valve core 200 or the wall of the receiving cavity of the valve body 100. The bearing mounting structure is a groove 610 formed in the end of the valve core 200 or the wall of the receiving cavity. The provision of the planar bearing 600 improves the stability and reliability of the valve core 200's rotation, thereby making the switching motion of the valve core 200 more reliable.

[0098] Obviously, the embodiments described above are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, ordinary technicians in this field can make other different forms of changes or modifications without making any creative work, which should fall within the scope of protection of the present disclosure.

Claims

1. A valve body structure, comprising: The valve body (1000) has a first air duct opening (110) and a second air duct opening (120), wherein the first air duct opening (110) is configured to be in communication with a negative pressure generator, and the second air duct opening (120) is configured to be in communication with an external device, and the first air duct opening (110) and the second air duct opening (120) have a connected state and a cut-off state; as well as A driving assembly (300) drivingly connected to the valve body (1000); The valve body (1000) switches between a connected state and a disconnected state between the first air duct opening (110) and the second air duct opening (120) in response to the driving of the driving component (300); when the first air duct opening (110) and the second air duct opening (120) are in a connected state, the valve body (1000) has a first internal air duct that connects the negative pressure generator and the external device.

2. The valve body structure according to claim 1, wherein: The valve body comprises: A valve body (100) having a receiving cavity, wherein the first air duct opening (110) and the second air duct opening (120) communicating with the receiving cavity are provided on a wall surface of the valve body (100); and A valve core (200) is movably disposed in the receiving cavity and cooperates with the first air duct opening (110) and the second air duct opening (120); The driving assembly (300) is connected to the valve core (200) and is used to drive the valve core (200) to rotate, so that the valve core changes its position in the receiving cavity in response to the driving of the driving assembly (300), thereby realizing the switching of the on-off state between the first air duct opening (110) and the second air duct opening (120).

3. The valve body structure according to claim 2, wherein: A third air duct opening (130) is also provided on the wall surface of the valve body (100), and the third air duct opening (130) is configured to communicate with a dirt collection container, and the valve core (200) is configured to enable the first air duct opening (110) to communicate with either the second air duct opening (120) or the third air duct opening (130); Wherein, when the first air duct opening (110) and the third air duct opening (130) are in a communicating state, the valve body (1000) has a second inner air duct that enables the negative pressure generator and the dirt collection container to communicate with each other.

4. The valve body structure according to claim 3, wherein: The first air duct opening (110), the second air duct opening (120) and the third air duct opening (130) are arranged on the circumferential wall surface of the valve body (100), wherein the first air duct opening (110), the second air duct opening (120) and the third air duct opening (130) are respectively distributed at intervals along the circumference of the valve core (200).

5. The valve body structure according to claim 3, wherein: The second air duct opening (120) and the third air duct opening (130) are staggered and distributed along the axial direction of the valve core (200).

6. The valve body structure according to claim 5, wherein: The first air duct opening (110) is located between the second air duct opening (120) and the third air duct opening (130) along the axial direction of the valve core (200), wherein the first air duct opening (110) and the third air duct opening (130) at least partially overlap in the axial direction of the valve core (200).

7. The valve body structure according to claim 3, wherein: The valve core (200) is in a hollow cylindrical shape, and a first communication port (211) and a second communication port (221) are provided on a circumferential wall surface of the valve core (200), the first communication port (211) and the second communication port (221) are respectively connected to the hollow cavity of the valve core (200), and the first communication port (211) and the second communication port (221) are independent of each other; Wherein, the first communication port (211) is always connected to the first air duct port, the first communication port (211) is intermittently connected to the third air duct port, and the second communication port (221) is intermittently connected to the second air duct port; The first connecting port (211) and the second connecting port (221) change their positions relative to the second air duct port and the third air duct port along the circumferential direction of the valve core (200) in response to the driving of the driving assembly (300), so that the first air duct port is connected to either the second air duct port or the third air duct port.

8. The valve body structure according to claim 7, wherein: The first communication port (211) and the second communication port (221) are staggered and distributed along the axial direction of the valve core (200), and the central angle corresponding to the first communication port (211) is greater than the central angle corresponding to the second communication port (221).

9. The valve body structure according to claim 7, wherein: The valve core (200) is arranged in a split body in the axial direction, and comprises a first valve core part (210) and a second valve core part (220); one of the first valve core part (210) and the second valve core part (220) is drivingly connected to the driving assembly (300); the first valve core part (210) and the second valve core part (220) respectively have a butt joint end; a convex part (223) extending along the axial direction of the valve core (200) is provided on the butt joint end of one of the first valve core part (210) and the second valve core part (220); and a groove (213) matching with the convex part is provided on the butt joint end of the other of the first valve core part (210) and the second valve core part (220); The first communication port (211) is located on the circumferential wall surface of the first valve core portion (210), and the second communication port (221) is located on the circumferential wall surface of the second valve core portion (220).

10. The valve body structure according to claim 7, wherein: A first sealing member and a second sealing member are also provided on the circumferential wall surface of the valve core (200); the first sealing member and the first communication port (211) are adjacently distributed in the circumferential direction and are arranged flush in the axial direction; and the second sealing member and the second communication port (221) are adjacently distributed in the circumferential direction and are arranged flush in the axial direction; Wherein, the first sealing member is configured to seal the third air duct opening, and the second sealing member is configured to seal the second air duct opening.

11. The valve body structure according to claim 2, wherein: The valve core (200) has a first shaft section (M) and a second shaft section (N) on both ends thereof, which are supported on the valve body (100) and are coaxial, and the first shaft section (M) and the second shaft section (N) are arranged in opposite directions along the axial direction of the valve core (200), wherein the first shaft section (M) is in driving connection with the driving assembly (300) to drive the valve core (200) to rotate in the receiving chamber; Wherein, the driving assembly (300) has an output shaft, the output shaft is drivingly connected to the first shaft section (M), and the output shaft is parallel or perpendicular to the first shaft section (M).

12. The valve body structure according to claim 2, wherein: A plane bearing (600) is provided between at least one end of the valve core (200) and the cavity wall of the receiving cavity, wherein a bearing mounting structure is provided on one of the end of the valve core (200) and the cavity wall of the receiving cavity.

13. The valve body structure according to claim 12, wherein: The bearing mounting structure is a groove body (610) formed at the end of the valve core (200) or on the cavity wall of the receiving cavity.

14. A cleaning system comprising: Base station; as well as A cleaning device, provided with a negative pressure generator and a dirt collection container, the cleaning device being adapted to the base station; Wherein, a valve body structure is provided on the cleaning device, and the valve body structure is located between the negative pressure generator and the dirt collection container, and the valve body structure is configured to selectively conduct the negative pressure generator and one of the dirt collection container and the base station, so that the negative pressure generator can act on one of the dirt collection container and the base station; Wherein, the valve body structure is the valve body structure as described in any one of claims 1 to 13.

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