Valve body structure and cleaning system

Abstract

The utility model discloses a valve body structure and a cleaning system, the valve body structure comprises a valve body, the valve body is provided with a first air channel port and a second air channel port, the first air channel port is configured to be communicated with a negative pressure generator, the second air channel port is configured to be communicated with external equipment, and the first air channel port and the second air channel port have a communication state and a cut-off state; the driving assembly is in driving connection with the valve body; the valve body responds to driving of the driving assembly to switch the communicating state and the cut-off state between the first air channel opening and the second air channel opening, and when the first air channel opening and the second air channel opening are in the communicating state, the valve body is provided with a first inner air channel enabling the negative pressure generator to communicate with external equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning equipment, and in particular relates to a valve body structure and a cleaning system. Background Art

[0002] The cleaning device is used to perform cleaning tasks and clean the target site. The cleaning device includes a fan for sucking external dirt into the interior of the cleaning device. In order to facilitate users to charge the cleaning device and empty the dirt stored in the cleaning device, the cleaning device is usually equipped with a base station.

[0003] In the prior art, a negative pressure device is provided inside the base station to suck the dirt inside the cleaning device into the base station, thereby realizing the function of emptying the dirt inside the cleaning device. Although the negative pressure device of the base station solves the problem of sucking dirt, it greatly increases the complexity of the structure and the production cost of the base station. Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to provide a valve body structure and a cleaning system that can automatically switch air ducts.

[0005] In order to solve the above technical problems, the utility model provides a valve body structure, including: 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 component, which is drivingly connected to the valve body;

[0006] Wherein, 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 a connection state, the valve body has a first internal air duct that connects the negative pressure generator and the external device.

[0007] Preferably, the valve body comprises: a valve body having a receiving cavity, and 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;

[0008] A valve core is movably disposed in the receiving cavity and cooperates with the first air duct opening and the second air duct opening;

[0009] 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.

[0010] Preferably, a third air duct opening is further provided on the wall surface of the valve body, and the third air duct opening is configured to communicate with a dirt collection container, and the valve core is configured to make the first air duct opening communicate with either the second air duct opening or the third air duct opening;

[0011] 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.

[0012] 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 distributed at intervals along the circumference of the valve core.

[0013] Preferably, the second air duct opening and the third air duct opening are staggered in distribution along the axial direction of the valve core.

[0014] 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.

[0015] 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 connected to the hollow cavity of the valve core, and the first communication port and the second communication port are independent of each other;

[0016] Wherein, the first communication port is always connected with the first air duct port, the first communication port is intermittently connected with the third air duct port, and the second communication port is intermittently connected with the second air duct port;

[0017] 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.

[0018] Preferably, the first communication port and the second communication port are staggered in distribution along the axial direction of the valve core, and the central angle corresponding to the first communication port is greater than the central angle corresponding to the second communication port.

[0019] Preferably, the valve core is divided into a first valve core part and a second valve core part in the axial direction, one of the first valve core part and the second valve core part is drivingly connected to the driving assembly, the first valve core part and the second valve core part respectively have a butt joint end, a convex part extending along the axial direction of the valve core is provided on the butt joint end of one of the first valve core part and the second valve core part, and a groove matching with the convex part is provided on the butt joint end of the other of the first valve core part and the second valve core part;

[0020] 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.

[0021] Preferably, a first seal and a second seal are further provided on the circumferential wall surface of the valve core, the first seal and the first communication port are adjacently distributed in the circumferential direction and are arranged flush in the axial direction, and the second seal and the second communication port are adjacently distributed in the circumferential direction and are arranged flush in the axial direction;

[0022] 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.

[0023] Preferably, the two end sides of the valve core have a first shaft section and a second shaft section supported on the valve body and coaxially, the first shaft section and the second shaft section are distributed in opposite directions along the axial direction of the valve core, wherein the first shaft section is transmission-connected with the driving assembly to drive the valve core to rotate in the receiving chamber;

[0024] Wherein, the driving component has an output shaft, the output shaft is drivingly connected to the first shaft section, and the output shaft is parallel or perpendicular to the first shaft section.

[0025] Preferably, a plane bearing is provided between at least one end of the valve core and the cavity wall of the receiving cavity, wherein a bearing mounting structure is provided on one of the end of the valve core and the cavity wall of the receiving cavity.

[0026] Preferably, the bearing mounting structure is a groove body formed on the end of the valve core or on the cavity wall of the accommodating cavity.

[0027] The utility model 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 the dirt collection container and one of 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 above.

[0028] The technical solution provided by the utility model has the following advantages:

[0029] 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 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, reducing the number of negative pressure devices used, thereby simplifying the overall structure of the base station, facilitating installation and maintenance, and also reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of the cleaning system provided by the utility model;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of the cleaning device provided by the utility model;

[0033] Figure 3 for Figure 2 Schematic diagram of the decomposition structure;

[0034] Figure 4 It is a schematic diagram of the three-dimensional structure when the base station is equipped with a sewage tank and a clean water tank;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure when the base station is not equipped with a clean water tank;

[0036] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of;

[0037] Figure 7 It is one of the three-dimensional structural schematic diagrams of the valve body;

[0038] Figure 8 The second schematic diagram of the three-dimensional structure of the valve body;

[0039] Fig. 9 The third schematic diagram of the three-dimensional structure of the valve body;

[0040] Fig.10 It is a schematic diagram of the cross-sectional structure of the valve body;

[0041] Fig.11 It is one of the three-dimensional structural schematic diagrams of the valve core;

[0042] Fig.12 The second schematic diagram of the three-dimensional structure of the valve core;

[0043] Fig.13 The third schematic diagram of the three-dimensional structure of the valve core;

[0044] Fig.14 for Fig.13 Schematic diagram of the decomposition structure;

[0045] Fig.15 It is a schematic diagram of the exploded structure between the plane bearing and the valve core. DETAILED DESCRIPTION

[0046] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model 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 utility model and the features in the embodiments can be combined with each other without conflict.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0048] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; 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-mentioned directional words are not used to limit the present invention.

[0049] like Figures 1 to 3 As shown, the utility model discloses a cleaning system, including: a base station 3000 and a cleaning device 2000, and 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 body structure and a dirt collection container 2002, and the valve body structure is located between the negative pressure generator 2001 and the dirt collection container 2002. The valve body structure is used to selectively conduct the negative pressure generator 2001 and one of the dirt collection container 2002 and the base station 3000, so that the negative pressure generator 2001 can act on one of the dirt collection container 2002 and the base station 3000, so that one of the dirt collection container 2002 and the base station 3000 is in a negative pressure state.

[0050] That is to say, under the action of the valve body structure, the negative pressure generator 2001 can form a fluid connection with the dirt collection container 2002, or the negative pressure generator 2001 can form a fluid connection with the base station 3000.

[0051] Specifically, the ability of the negative pressure generator 2001 to form a fluid connection with the dirt collection container 2002 means that the negative pressure generator 2001 can allow external dirt (such as dirt on the target site and dirt generated by self-cleaning) to be sucked into the dirt collection container 2002 under the action of negative pressure. The ability of the negative pressure generator 2001 to form a fluid connection with the base station 3000 means that an airflow path is formed between the negative pressure generator 2001 and the base station 3000.

[0052] In one application scenario, the cleaning device 2000 is a floor scrubber, and the base station 3000 is a base station adapted to 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 which case the base station is a base station adapted to 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, and the like. The following description takes the cleaning device 2000 as a floor scrubber as an example, and the base station 3000 is a base station adapted to 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 floor scrubber sewage tank.

[0053] The floor scrubber includes a floor brush assembly 2003, a body 2004 pivotally connected to the floor brush assembly 2003, and a negative pressure generator 2001, a dirt collection container 2002, and a floor scrubber clean water tank 2005 are provided on the body 2004. The floor scrubber has a docking state when docking with the base station 3000 and a working state when performing a cleaning task. When the floor scrubber is in the working state, the floor scrubber clean water tank 2005 can deliver cleaning liquid to the floor brush assembly 2003 to wet the roller brush, and the dirt collection container 2002 is used to store the dirt sucked in during the cleaning process. In the working state, when the floor scrubber moves in the target site, the floor scrubber can suck the dirt on the ground into the dirt collection container 2002 through the floor brush assembly 2003 under the action of the negative pressure generator 2001, thereby achieving the purpose of cleaning.

[0054] In one embodiment, if Figure 4 As shown, the base station 3000 includes a base station carrier 3100, a base station sewage tank 3200, and a base station clean water tank 3300, wherein the base station sewage tank 3200 and the base station clean water tank 3300 are arranged on the base station carrier 3100. The base station sewage tank 3200 and the base station clean water tank 3300 can be fixedly arranged on the base station carrier 3100, or can be detachably arranged.

[0055] The base station sewage tank 3200 may be connected to the base station sewage pipe 3700. The base station sewage pipe 3700 may be provided according to actual conditions. For example, when the base station sewage tank 3200 is fixedly provided 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 provided on the base station carrier 3100, the base station sewage pipe 3700 may or may not be provided.

[0056] 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.

[0057] The housing of the body 2004 is provided with a sewage discharge interface (not shown) that can be connected to the waste collection container 2002, and a body docking interface 2006 that can be connected to the negative pressure generator 2001 through a valve body structure. The housing of the base station 3000 is provided with a sewage extraction interface 3600 for docking with the sewage discharge interface, and a base station suction port 3500 for sealingly docking with the body docking interface 2006, wherein the base station suction port 3500 and the sewage extraction interface 3600 are respectively connected to the base station sewage tank 3200.

[0058] 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 with the base station sewage tank 3200, and the second channel is used to connect the sewage extraction interface 3600 with the base station sewage tank 3200. The first channel is used for gas circulation, and the second channel is used for sewage flow.

[0059] When the floor scrubber is docked with the base station 3000, the sewage discharge interface of the floor scrubber is connected to the sewage extraction interface 3600, and the machine body docking interface 2006 is connected to the base station suction port 3500. At this time, the negative pressure generator 2001 acts on the base station 3000 through the valve body structure.

[0060] 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 provided 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 also reducing production costs.

[0061] It is worth noting that when the negative pressure generator 2001 acts on the base station 3000, the negative pressure generated by the negative pressure generator 2001 can also act on the base station sewage pipe 3700, and the base station sewage pipe 3700 is connected to the base station sewage tank 3200. The negative pressure generator 2001 can make the base station sewage pipe 3700 generate negative pressure, thereby sucking the sewage in the sewage collection container 2002 into the base station 3000, and then discharging it to the outside through the base station sewage pipe 3700. In this solution, the base station suction port 3500 is not directly connected to the base station sewage tank 3200, but is connected to the base station sewage pipe 3700.

[0062] In another embodiment, if Figure 5 and Figure 6 As shown, the base station 3000 includes a base station carrier 3100 and a base station sewage tank 3200, and the base station sewage tank 3200 is arranged on the base station carrier 3100. In this solution, the base station 3000 is not provided with a base station clean water tank 3300, and the base station carrier 3100 is connected to an external water source through a water inlet pipe (not shown). When the floor scrubber clean water tank 2005 needs to be replenished with water, the base station 3000 replenishes the clean water tank 2005 of the floor scrubber through the water inlet pipe. The above-mentioned "external water source" can be municipal water or other forms of water sources.

[0063] 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 clean water tank 3300, and the structure of the base station 3000 is relatively simple.

[0064] 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.

[0065] When the base station 3000 is not 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 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.

[0066] Regarding the valve body structure, such as Figures 7 to 10 As shown, 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 connected to the base station 3000, and a second passage state when the negative pressure generator 2001 is connected to the dirt collection container 2002.

[0067] When the valve body 1000 is in the first passage state, the negative pressure generator 2001 is connected to the base station 3000, and the base station 3000 is in a negative pressure state; when the valve body 1000 is in the second passage state, the negative pressure generator 2001 is connected to the dirt collection container 2002, and the dirt collection container 2002 is in a negative pressure state. The driving component 300 drives the valve body 1000 to switch between the first passage state and the second passage state, so that one of the dirt collection container 2002 and the base station 3000 is in a negative pressure state.

[0068] Further, the valve body 1000 includes a valve body 100 and a valve core 200. The valve body 100 has a receiving cavity, and a first air duct opening 110, a second air duct opening 120, and a third air duct opening 130 communicating with the receiving cavity are provided on the wall surface of the valve body 100. 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 200 is rotated and arranged in the receiving cavity.

[0069] like Fig.11 and Fig.12 As shown, the two ends of the valve core 200 have a first shaft section M and a second shaft section N that are coaxial and supported on the valve body 100, and the first shaft section M and the second shaft section N are distributed in opposite directions along the axial direction of the valve core 200. The first shaft section M is transmission-connected to the driving assembly 300, and the driving assembly 300 has an output shaft, which is transmission-connected to the first shaft section M, and the output shaft is parallel to or perpendicular to the first shaft section M, so as to drive the valve core 200 to rotate in the receiving cavity.

[0070] 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. The valve core 200 changes its position in the receiving cavity in response to the driving of the driving assembly 300 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 selectively connected with the second air duct opening 120 and the third air duct opening 130. The above-mentioned "selectively connected" means: the first air duct opening 110 is connected with the second air duct opening 120, or the first air duct opening 110 is connected with the third air duct opening 130.

[0071] 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 dirt collection container 2002. It can be understood that the second air duct opening 120 can also be connected to other external devices through the fuselage docking port 2006, and the external devices include but are not limited to base stations.

[0072] The first air duct opening 110 and the second air duct opening 120 are in a connected state and a cut-off state; similarly, the first air duct opening 110 and the third air duct opening 130 are in a connected state and a cut-off state. The valve body 1000 switches the on-off state between the first air duct opening 110 and the second air duct opening 120 and the on-off state between the first air duct opening 110 and the third air duct opening 130 in response to the driving of the driving component 300.

[0073] 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.

[0074] 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.

[0075] Further, 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. Among them, the first air duct opening 110, the second air duct opening 120 and the third air duct opening 130 are respectively distributed along the circumference of the valve core 200. The above-mentioned "circumferential wall surface of the valve body 100" 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 body with a cross section of a triangle, a quadrilateral or other shapes, and the shape of the valve body 100 is not limited.

[0076] 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, there is no spacing between the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130, and they are aligned. 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 is an example of 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.

[0077] 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, thereby avoiding the problem of too long a passage length between one of the second air duct opening 120 and 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 can facilitate the communication among the first air duct opening 110, the second air duct opening 120, and the third air duct opening 130.

[0078] In order to make the floor scrubber have better 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 to say, in the axial direction of the valve core 200, the third air duct opening 130 is closer to the first air duct opening 110, so that the passage length between the third air duct opening 130 and the first air duct opening 110 is short, the wind resistance is small, and the negative pressure suction force acting on the dirt collection container 2002 is large, which can better suck external dirt into the dirt collection container 2002, and the dirt suction effect is good.

[0079] like Figures 11 to 14 As shown, 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 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 above-mentioned "circumferential wall surface of the valve core 200" 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.

[0080] 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 .

[0081] The first communication port 211 is always connected to the first air duct port 110, the first communication port 211 is intermittently connected to the third air duct port 130, and the second communication port 221 is intermittently connected to 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.

[0082] In one embodiment, a partition column 212 may be provided in the first communication port 211, and the partition column 212 divides the first communication port 211 into two adjacently distributed ports, the two ports including a first port and a second port. The communication states of the two ports are as follows: in the first case, the first port is connected to the first air duct port 110, and the second port is connected to the third air duct port 130, at which time the negative pressure generator 2001 is connected to the dirt collection container 2002; in the second case, the valve core 200 is rotated so that the second port is connected to the first air duct port 110, and the circumference of the valve core 200 avoids blocking the third air duct port 130, at which time the negative pressure generator 2001 is connected to the second air duct port 120 through the second communication port 221.

[0083] 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.

[0084] 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.

[0085] Furthermore, the valve core 200 is dividedly arranged in the axial direction thereof, including a first valve core portion 210 and a second valve core portion 220 , and one of the first valve core portion 210 and the second valve core portion 220 is drivingly connected to the driving assembly 300 .

[0086] like Fig.14 As shown, the first valve core part 210 and the second valve core part 220 respectively have butt ends, and a protrusion 223 extending along the axial direction of the valve core 200 is provided on the butt end of one of the first valve core part 210 and the second valve core part 220, and a groove 213 matching with the protrusion 223 is provided on the butt end of the other. The first communication port 211 is located on the circumferential wall surface of the first valve core part 210, and the second communication port 221 is located on the circumferential wall surface of the second valve core part 220.

[0087] In order to improve the sealing performance of the second air duct opening 120 and the third air duct opening 130, as Fig.13 and Fig.14 As shown, a first sealing member 500 and a second sealing member 510 are further provided on the circumferential wall surface of the valve core 200. The first sealing member 500 and the second sealing member 510 may be rubber pads or may be made of other flexible materials.

[0088] Specifically, the first seal 500 is adjacent to the first communication port 211 in the circumferential direction and is flushly arranged in the axial direction. The second seal 510 is adjacent to the second communication port 221 in the circumferential direction and is flushly arranged in the axial direction. 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 above-mentioned "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.

[0089] 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 cut off from the third air duct opening 130, and a second position when the first air duct opening 110 is cut off from the second air duct opening 120 and the first air duct opening 110 is connected to the third air duct opening 130. Figure 7 As shown, a rotation limiting unit 400 for limiting a first position and a second position of the valve core 200 is provided between the valve core 200 and the valve body 100 .

[0090] The rotation limit unit 400 includes a trigger block 410 disposed on the end surface of the valve core 200 and extending along the axial direction of 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 trigger block 410. The end of the valve body 100 is provided with a through hole 140 for the trigger block 410 to penetrate to the outer side of the valve body 100, and the pair of limit switches 420 are configured to limit the two extreme movement positions of the trigger block 410, thereby limiting the first position and the second position of the valve core 200.

[0091] Furthermore, if Figures 13 to 15 As shown, a plane bearing 600 is provided between at least one end of the valve core 200 and the cavity wall of the receiving cavity of the valve body 100. A bearing mounting structure is provided on one of the end of the valve core 200 and the cavity wall of the receiving cavity of the valve body 100. The bearing mounting structure is a groove 610 formed on the end of the valve core 200 or the cavity wall of the receiving cavity. The plane bearing 600 can improve the stability and reliability of the rotation of the valve core 200, thereby making the switching movement of the valve core 200 more reliable.

[0092] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. A valve body structure, characterized in that: include: 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; A drive assembly (300) is drivingly connected to the valve body; 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, characterized in that: 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); 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: include: 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, 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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