Sewage tank cover assembly, sewage tank and cleaning equipment

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a sewage tank cover assembly, a sewage tank and cleaning equipment. The sewage tank cover assembly comprises a cover body, a first electrode and a second electrode, the cover body is provided with an air outlet part, the air outlet part is connected with an air inducing piece, the first electrode and the second electrode are connected to the cover body, the first electrode is provided with a first trigger part, and the second electrode is provided with a second trigger part and connected with a contact piece on the cover body. And the trigger module is used for generating trigger signals when the first trigger part and the second trigger part are conducted by the water body in the sewage tank, so that the cleaning equipment adjusts the operation parameters of the air inducing piece according to the corresponding trigger signals. The risk that water drops generated on the surface of a water body in the sewage tank are sucked into the air inducing piece can be reduced, so that the air inducing piece can normally operate, and good practicability is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically relates to a sewage tank cover assembly, a sewage tank, and a cleaning device. Background Art

[0002] In related technologies, sewage tanks are a crucial component of cleaning equipment (e.g., robot vacuums and floor scrubbers). Their primary function is to collect, separate, and store both wet and dry waste. Their operating principle is as follows: an air inlet draws air from the sewage tank, creating a negative pressure inside the tank and drawing the wastewater and solid waste into the tank.

[0003] In the process of implementing this application, the applicant discovered that the relevant technology has at least the following deficiencies:

[0004] When the cleaning equipment is running, if the sewage tank is in a tilted position, the water surface in the sewage tank is close to the draft member, and water droplets may be generated on the water surface in the sewage tank. When the draft member is running, the water droplets may be sucked into the draft member, affecting the normal operation of the draft member. Summary of the Invention

[0005] The present application provides a sewage tank cover assembly, a sewage tank, and a cleaning device, which aim to at least to some extent solve the technical problem that when the cleaning device is running, water droplets may be sucked into the air inducing member, affecting the normal operation of the air inducing member.

[0006] In a first aspect of the present application, an embodiment of the present application provides a sewage tank cover assembly for being installed on a sewage tank of a cleaning device, wherein the cleaning device is provided with an air-inducing member for forming a negative pressure in the sewage tank, and the sewage tank cover assembly includes: a cover body, provided with an air outlet, and the air outlet is connected to the air-inducing member; a first electrode and a second electrode, respectively connected to the cover body and connected to a contact piece on the cover body, the first electrode having a first triggering member, and the second electrode having a second triggering member, and the first triggering member and the second triggering member are both arranged below the air outlet; and used to generate a trigger signal when the first triggering member and the second triggering member are conducted by the water in the sewage tank, so that the cleaning device adjusts the operating parameters of the air-inducing member according to the corresponding trigger signal.

[0007] The sewage tank cover assembly provided in the embodiment of the present application generates a trigger signal when water in the sewage tank conducts the first and second trigger parts. This trigger signal causes the cleaning device to adjust the operating parameters of the draft member according to the corresponding trigger signal. This reduces the operating power of the draft member when the sewage tank is in an inclined position, thereby reducing the risk of water droplets generated on the surface of the water in the sewage tank being drawn into the draft member, allowing the draft member to operate normally. This provides excellent practicality. When the cleaning device is in other positions, there is no water between the first and second trigger parts, the first and second trigger parts are not conducting, and no trigger signal for adjusting the operating parameters of the draft member is generated. The draft member returns to its normal set power value, allowing the device to operate normally.

[0008] In a second aspect of the present application, an embodiment of the present application further provides a sewage tank, comprising: a tank body, the tank body being provided with an inlet and an outlet; the above-mentioned sewage tank cover assembly, the cover body of the sewage tank cover assembly being detachably disposed in the inlet and outlet.

[0009] The sewage tank provided in the embodiment of the present application can reduce the risk of water droplets generated on the surface of the water in the sewage tank being sucked into the air inducing member, allowing the air inducing member to operate normally, and has good practicality.

[0010] In a third aspect of the present application, an embodiment of the present application further provides a cleaning device, which includes the above-mentioned sewage tank.

[0011] The sewage tank provided in the present application can reduce the risk of water droplets generated on the surface of the water in the sewage tank being sucked into the air inducing member, so that the air inducing member can operate normally, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 A schematic structural diagram of a sewage tank in one or more embodiments of the present application is shown;

[0014] Figure 2 Shown Figure 1 The main schematic diagram of

[0015] Figure 3 Shown with Figure 1 Schematic diagram of logic control of the cleaning equipment of the sewage tank shown;

[0016] Figure 4A schematic structural diagram of a sewage tank cover assembly in one or more embodiments of the present application is shown;

[0017] Figure 5 Shown Figure 4 A schematic diagram of the structure from the first perspective;

[0018] Figure 6 Shown Figure 4 A schematic diagram of the structure of the second perspective;

[0019] Figure 7 Shown Figure 1 Schematic diagram of water level detection of sewage tank in target posture shown;

[0020] Figure 8 Shown Figure 4 A schematic structural diagram of the first electrode in FIG.

[0021] Figure 9 Shown Figure 4 Schematic cross-sectional view of ;

[0022] Figure 10 Shown Figure 4 A schematic structural diagram of the second electrode in FIG.

[0023] Figure 11 Shown Figure 1 Schematic diagram of water level detection of a sewage tank in a vertical position;

[0024] Figure 12 Shown Figure 1 Schematic diagram of water level detection of a sewage tank in an inclined posture shown;

[0025] Figure 13 Shown Figure 4 A schematic structural diagram of the third electrode in FIG.

[0026] Figure 14 Shown Figure 13 Schematic cross-sectional view of ;

[0027] Figure 15 Shown Figure 4 A schematic structural diagram of the cover body;

[0028] Figure 16 A schematic structural diagram showing a water retaining portion including a plurality of first inclined surfaces in one or more embodiments of the present application is shown;

[0029] Figure 17 A schematic structural diagram showing a water retaining portion including a plurality of first steps in one or more embodiments of the present application is shown;

[0030] Figure 18 Shown Figure 15 A structural diagram from another perspective;

[0031] Figure 19 A schematic structural diagram showing a water guide portion including a plurality of first inclined surfaces in one or more embodiments of the present application is shown;

[0032] Figure 20 A schematic structural diagram showing a water guide portion including a plurality of first steps in one or more embodiments of the present application is shown;

[0033] Figure 21 Shown Figure 1 Schematic diagram of the structure of the sewage tank.

[0034] Description of reference numerals:

[0035] Sewage tank cover assembly-a;

[0036] Cover-1, air outlet-101,

[0037] First electrode 2, first trigger part 201, first pole piece 202, second pole piece 203, process hole 204;

[0038] Second electrode-3, second trigger part-301, third electrode piece-302, fourth electrode piece-303, fifth electrode piece-304;

[0039] First contact piece - 4;

[0040] Second contact piece-5;

[0041] Dividers - 6;

[0042] Third electrode 7, third triggering unit 701, fourth triggering unit 702, housing 703, first pole 704, second pole 705, sixth pole piece 706, seventh pole piece 707, sealing groove 708;

[0043] Fourth electrode-8, fifth triggering unit-801;

[0044] Support member-9, slot body-901, through hole-902;

[0045] Third contact piece - 10;

[0046] Air outlet body 11, air inlet 1101, water retaining part 1102, air outlet cavity 1103, air inlet cavity 1104, water guide part 1105, first bottom part 1106, second bottom part 1107;

[0047] Air guide - 12;

[0048] Wind limiter-13;

[0049] Support-14;

[0050] Clasp -15;

[0051] Filter element-16;

[0052] Bracket-17;

[0053] Seals-18

[0054] Sewage tank-b, box body-b1, inlet and outlet-b2;

[0055] controller-c;

[0056] Draft piece-d. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0058] With the development of economy and the progress of society, people have higher and higher requirements for the quality of life. Therefore, some smart appliances that can free people's hands have emerged, and cleaning equipment for home use has gradually entered people's lives. Now the cleaning equipment is a floor scrubber as an example to further describe the technical solution of this application.

[0059] A floor scrubber is a type of cleaning equipment that simultaneously cleans the floor and drains wastewater, removing it from the site. It offers advantages such as environmental friendliness, energy efficiency, and high efficiency. The wastewater tank is a crucial component of a floor scrubber, used for gas-liquid separation and collecting the separated wastewater within its chamber. The amount of wastewater stored in the tank needs to be monitored to determine whether it needs to be cleaned.

[0060] In the related art, when the floor scrubber is running, if the sewage tank is in a tilted position, the surface of the water in the sewage tank is close to the draft member, and water droplets may be generated on the surface of the water in the sewage tank. When the draft member is running, too many water droplets may be sucked into the draft member, affecting the normal operation of the draft member.

[0061] Based on the above technical problems, the present application provides a sewage tank cover assembly, a sewage tank and a cleaning device, aiming to at least to some extent solve the technical problem that when the cleaning device is running, excessive water droplets may be sucked into the air induced component, affecting the normal operation of the air induced component.

[0062] Figure 1 Schematic diagram of the structure of the sewage tank in one or more embodiments of the present application is shown. Figure 2 Shown Figure 1 The main schematic diagram, Figure 3 Shown with Figure 1 The following is a schematic diagram of the logic control of the cleaning equipment of the sewage tank. Figure 1 as well as Figure 2 In the first aspect of the present application, the present application provides a sewage tank cover assembly a, which is used to be installed on a sewage tank b of a cleaning equipment. The cleaning equipment is provided with an air-inducing member for forming a negative pressure in the sewage tank b, and the air-inducing member can be a fan.

[0063] Figure 4 1 shows a schematic structural diagram of a sewage tank cover assembly in one or more embodiments of the present application. Figure 5 Shown Figure 4 A schematic diagram of the structure from the first perspective, Figure 6 Shown Figure 4 A schematic diagram of the structure of the second perspective, Figure 7 Shown Figure 1 The schematic diagram of water level detection of sewage tank in target posture is shown. Figure 4-Figure 7 The sewage tank cover assembly a includes a cover body 1, a first electrode 2 and a second electrode 3, wherein the cover body 1 is provided with an air outlet 101, which is connected to the air induction member d. When the air induction member d is working, the air in the sewage tank b is extracted through the air outlet 101, so that a negative pressure is formed in the sewage tank b, and the sewage together with the solid waste are sucked into the sewage tank b through the pipe. The first electrode 2 and the second electrode 3 are both connected to the cover body 1, the first electrode 2 has a first trigger part 201, and the second electrode 3 has a second trigger part 301. The first trigger part 201 and the second trigger part 301 are both connected to the contact piece on the cover body 1, and are used to generate a trigger signal when the first trigger part 201 and the second trigger part 301 are conducted by the water in the sewage tank b, so that the cleaning device adjusts the operating parameters of the air induction member according to the corresponding trigger signal.

[0064] The sewage tank cover assembly a provided in this application generates a trigger signal when the water in the sewage tank b conducts the first trigger unit 201 and the second trigger unit 301. This trigger signal causes the cleaning device to adjust the operating parameters of the draft member according to the corresponding trigger signal. This reduces the operating power of the draft member when the sewage tank is in an inclined position, thereby reducing the risk of water droplets generated on the surface of the water in the sewage tank b being drawn into the draft member, allowing the draft member to operate normally. This assembly has excellent practicality. The inclined position is set as the target position. When the cleaning device is in other positions, there is no water between the first trigger unit 201 and the second trigger unit 301. The first trigger unit 201 and the second trigger unit 301 are not conductive, and no trigger signal for adjusting the operating parameters of the draft member is generated. The draft member returns to its normal set power value, allowing the device to operate normally.

[0065] Combine Figure 3 as well as Figure 6 The cleaning device may further include a controller c. When the sewage tank b is in the target position, the water in the sewage tank b conducts the first trigger unit 201 and the second trigger unit 301 to output a trigger signal to the controller c. This trigger signal can be defined as a first trigger signal. Upon receiving the first trigger signal, the controller c outputs a control signal to the draft member d to reduce the operating power of the draft member d, thereby reducing the risk of water droplets generated on the surface of the water in the sewage tank b being drawn into the draft member d, allowing the draft member d to operate normally. When the sewage tank b is not in the target position, there is no water between the first trigger unit 201 and the second trigger unit 301. The first trigger unit 201 and the second trigger unit 301 are not conducting, the controller c does not receive the first trigger signal, and the draft member d accordingly does not receive the control signal. The draft member d then returns to its normal set power value, allowing the device to operate normally.

[0066] In the related art, when a floor scrubber is in operation, a tilted sewage tank B will produce more water droplets on the surface of the water inside the sewage tank B compared to a vertical sewage tank B. Based on this, the target posture of the sewage tank B shown in this application is set to the tilted posture of the sewage tank B.

[0067] In addition, when the user pushes or pulls the floor scrubber, more water droplets will be generated on the surface of the water in the sewage tank B. Based on this, the sewage tank B shown in this application is tilted toward the back of the sewage tank B, that is, when the sewage tank B is tilted toward the user, and the posture of the sewage tank B is set as the target posture.

[0068] In some embodiments, the inclination angle of the sewage tank b can be less than or equal to 20°, that is, when the sewage tank b is at this inclination angle, the controller c is triggered to output a control signal to reduce the operation of the air induced member d. When the sewage tank b is at other angles, the air induced member d maintains the normally set operating power, so that the floor scrubber has good cleaning efficiency.

[0069] In some embodiments, the projections of the first triggering portion 201 and the second triggering portion 301 along the width of the sewage tank b (i.e., perpendicular to the front-to-back direction of the sewage tank b) may at least partially overlap. That is, when viewed along the width of the sewage tank b, at least portions of the first triggering portion 201 and the second triggering portion 301 are located in the same direction. When the sewage tank b is in the target posture and the water within the sewage tank b submerges the first triggering portion 201 of the first electrode 2 and the second triggering portion 301 of the second electrode 3, the water within the sewage tank b turns on the first triggering portion 201 of the first electrode 2 and the second triggering portion 301 of the second electrode 3, thereby transmitting a control signal to the controller c. In other embodiments, the projections of the first triggering part 201 and the second triggering part 301 along the width direction of the sewage tank b may not overlap, that is, the first triggering part 201 and the second triggering part 301 may be arranged sequentially along the front and rear directions of the sewage tank b. When the sewage tank b is in the target posture, the water in the sewage tank b sequentially submerges the first triggering part 201 of the first electrode 2 and the second triggering part 301 of the second electrode 3. When the first triggering part 201 of the first electrode 2 and the second triggering part 301 of the second electrode 3 are both submerged in the water in the sewage tank b, the water in the sewage tank b turns on the first triggering part 201 of the first electrode 2 and the second triggering part 301 of the second electrode 3 to transmit the control signal to the controller c.

[0070] Figure 8 Shown Figure 4 Schematic diagram of the structure of the first electrode, Figure 9 Shown Figure 4 Schematic cross-section diagram, combined with Figure 8 as well as Figure 9 The first electrode 2 may include a first electrode piece 202 and a second electrode piece 203, wherein the first electrode piece 202 is arranged at the bottom of the cover body 1, and the first electrode piece 202 can be attached to the bottom of the cover body 1 in the front-to-back direction. The first electrode piece 202 is configured as a first trigger portion 201, and the second electrode piece 203 is connected to the top of the first electrode piece 202. The second electrode piece 203 passes through the cover body 1 and extends to above the top of the cover body 1. In some embodiments, the first electrode piece 202 and the second electrode piece 203 can be integrally formed, and the two form an inverted T-shaped structure. The first electrode piece 202 can serve as the first trigger portion 201 as a whole, or as part of the first trigger portion 201, which is not limited here. In other embodiments, the first electrode piece 202 and the second electrode piece 203 can also form an L-shaped structure, which is not limited here.

[0071] Combine Figure 1 as well as Figure 2 The upper end of the second electrode 203 can be connected to the first contact piece 4 provided on the box cover assembly through a wire. When the sewage tank b is placed on the main unit of the floor scrubber, the first contact piece 4 will contact and connect with the corresponding contact point of the main unit.

[0072] Combine Figure 8 The first pole piece 202 may be provided with a process hole 204. The process hole 204 and the second pole piece 203 may have the same or substantially the same length. The bottom end of the second pole piece 203 may be connected to one side of the length direction of the process hole 204. When processing the process hole 204 on the first pole piece 202, the portion of the first pole piece 202 located within the process hole 204 may be cut, but the end of the portion needs to remain connected to the first pole piece 202. The portion is then vertically bent to form the second pole piece 203, saving material and facilitating processing.

[0073] Figure 10 Shown Figure 4 Schematic diagram of the structure of the second electrode, combined with Figure 10 In some embodiments, the second electrode 3 may include a third electrode piece 302 and a fourth electrode piece 303. The third electrode piece 302 passes through the cover 1 and extends to the bottom below the cover 1. That is, the third electrode piece 302 is arranged vertically. The portion of the third electrode piece 302 arranged below the bottom of the cover 1 is configured as the second trigger portion 301. One end of the fourth electrode piece 303 is connected to the top of the third electrode piece 302. The fourth electrode piece 303 is arranged on the top of the cover 1 and can be attached to the top of the cover 1 in the front-to-back direction. The entire portion of the third electrode piece 302 arranged below the bottom of the cover 1 can serve as the second trigger portion 301, or the portion of the third electrode piece 302 arranged below the bottom of the cover 1 can serve as the second trigger portion 301, without limitation. The third electrode piece 302 and the fourth electrode piece 303 can form an inverted L-shaped structure. In other embodiments, the top of the third pole piece 302 may also extend out of the cover 1 , and one end of the fourth pole piece 303 is connected to the middle of the third pole piece 302 , so that the third pole piece 302 and the fourth pole piece 303 form a T-shaped structure flipped 90°.

[0074] Combine Figure 10 In some embodiments, the second electrode 3 may further include a fifth electrode piece 304, the bottom end of the fifth electrode piece 304 is connected to the other end of the fourth electrode piece 303, and the top end extends in a direction away from the cover body 1. Figure 1 as well as Figure 2 The upper end of the fifth pole piece 304 can be connected to the second contact piece 5 provided on the box cover assembly through a wire. When the sewage tank b is placed on the main unit of the floor scrubber, the second contact piece 5 will contact and connect with the corresponding contact point of the main unit.

[0075] Combine Figure 5 as well as Figure 6In some embodiments, the sewage tank cover assembly a may further include a separator 6 connected to the bottom of the cover body 1 and disposed between the first triggering portion 201 and the second triggering portion 301. The separator 6 is an insulating member that prevents the formation of a water film between the first triggering portion 201 and the second triggering portion 301, thereby preventing the sewage tank b from being in a target posture and generating a first trigger signal to the controller c.

[0076] In some embodiments, the separator 6 can be made of plastic and integrally formed on the bottom of the cover 1. In other embodiments, the separator 6 can also be plugged in and / or bonded to the bottom of the cover 1, which is not limited here.

[0077] Combine Figure 4 、 Figure 5 、 Figure 6 as well as Figure 9 The sewage tank cover assembly a may further include a third electrode 7 and a fourth electrode 8, both of which are connected to the cover body 1, the third electrode 7 having a third triggering portion 701, and the third triggering portion 701 being arranged below the cover body 1, and the fourth electrode 8 having a fifth triggering portion 801, and the fifth triggering portion 801 being arranged below the cover body 1. Figure 11 Shown Figure 1 The schematic diagram of water level detection of the sewage tank in a vertical position is shown, combined with Figure 3 as well as Figure 11 When the sewage tank b reaches the first target water level, the water in the sewage tank b conducts the third trigger unit 701 and the fifth trigger unit 801, thereby outputting a second trigger signal to the controller c. Upon receiving the second trigger signal, the controller c outputs a water level warning message. Specifically, the third trigger unit 701 of the third electrode 7 and the fifth trigger unit 801 of the fourth electrode 8 cooperate to output a first water-full message, alerting the user to the water level in the sewage tank b. The device may then stop operation and issue a warning message to the user to clean the sewage tank b. This water level warning message may be an audible or visual signal, without limitation. The first target water level can be the water level in the sewage tank b when the device is in an upright position or tilted at an angle greater than or equal to 30°.

[0078] Figure 12 Shown Figure 1 The schematic diagram of water level detection of the sewage tank in a tilted posture is shown in FIG. Figure 5 、 Figure 6 、 Figure 11 as well as Figure 12In some embodiments, the fifth trigger unit 801 can be arranged below the third trigger unit 701, that is, there is a height difference between the bottom of the fifth trigger unit 801 and the third trigger unit 701. When the body of the floor scrubber is twisted, the water in the sewage tank b is twisted accordingly, so that the third trigger unit 701 and the fifth trigger unit 801 are connected through the water in the sewage tank b, thereby realizing water level detection under the twisted posture of the body.

[0079] Combine Figure 5 as well as Figure 6 In some embodiments, the third electrode 7 further includes a fourth trigger portion 702, which is disposed between the cover 1 and the third trigger portion 701, that is, the third trigger portion 701 is disposed below the fourth trigger portion 702. Figure 3 When the sewage tank b reaches the second target water level, the water in the sewage tank b conducts electricity through the fourth trigger unit 702 and the first trigger unit 201, thereby outputting a third trigger signal to the controller c. Upon receiving the third trigger signal, the controller c outputs a full water message, the device stops operating, and issues a warning to the user to clean the sewage tank b. This warning can be an audible or visual warning, without limitation. The second target water level can be the water level in the sewage tank b when the device is tilted at an angle of less than or equal to 30°.

[0080] Figure 13 Shown Figure 4 Schematic diagram of the structure of the third electrode, Figure 14 Shown Figure 13 Schematic cross-section of the . Figure 4 、 Figure 5 、 Figure 6 、 Figure 13 as well as Figure 14 The third electrode 7 may include a shell 703, a first pole 704, a second pole 705, a sixth pole piece 706, and a seventh pole piece 707, wherein the shell 703 is connected to the bottom of the cover 1, the first pole 704 and the second pole 705 are arranged vertically and parallel in the shell 703, the bottom ends of the first pole 704 and the second pole 705 both extend out of the bottom of the shell 703, the portion of the first pole 704 extending out of the bottom of the shell 703 is configured as the third triggering portion 701, the portion of the second pole 705 extending out of the bottom of the shell 703 is configured as the fourth triggering portion 702, one end of the sixth pole piece 706 is arranged in the shell 703, and the other end extends out of the shell 703, the sixth pole piece 706 is connected to the first pole 704 and the second pole 705, the bottom end of the seventh pole piece 707 is connected to the other end of the sixth pole piece 706, and the top end of the seventh pole piece 707 passes through the cover 1. Figure 1 as well as Figure 2The upper end of the seventh pole piece 707 can be connected to the third contact piece 10 provided on the box cover assembly through a wire. When the sewage tank b is placed on the main unit of the floor scrubber, the third contact piece 10 will contact and connect with the corresponding contact point of the main unit.

[0081] In specific implementation, the shell 703 can be connected to the corresponding parts of the pole and the pole piece in the form of plastic injection molding, and the cover 1 is provided with a mounting hole that matches the shell 703, and the shell 703 is fixedly connected to the mounting hole. Figure 12 as well as Figure 13 A sealing groove 708 may be provided on the outer peripheral surface of the shell 703 , and a sealing ring may be provided in the sealing groove 708 to achieve sealing between the shell 703 and the cover body 1 .

[0082] In some embodiments, the first pole 704 and the second pole 705 can be inserted into the sixth pole piece 706 with an interference fit to achieve good conductive performance. The seventh pole piece 707 can be integrally formed with the sixth pole piece 706, and the two can form an L-shaped structure or a T-shaped structure, which is not limited here.

[0083] Combine Figure 4-Figure 6 In some embodiments, two third electrodes 7 can be relatively arranged, and the two third electrodes 7 can be symmetrically arranged along the width direction (i.e., the left and right direction) of the cover body 1 with respect to the vertical center line of the cover body 1. Therefore, when the device is twisted to the left or right, the third trigger part 701 will be connected to the fifth trigger part through the water body, and the fourth trigger part 702 will be connected to the first trigger part 201 through the water body, thereby realizing water level detection in the twisted state of the fuselage, which has good practicality.

[0084] Combine Figure 4 as well as Figure 6 The two third electrodes 7 can be arranged on the side facing away from the user relative to the fourth electrode 8, that is, the two third electrodes 7 can be arranged on the front side of the sewage tank b. When the device is tilted forward or lying flat, the third trigger part 701 and the fourth trigger part 702 will have corresponding trigger parts that are connected through the water in the sewage tank b, thereby realizing water level detection when the body is tilted or lying flat, which has good practicality.

[0085] Combine Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 11 as well as Figure 12In some embodiments, the fourth electrode 8 can be connected to the first electrode 2 to form a common electrode. That is, the common electrode has two triggering parts, namely the first electrode 2 and the fourth electrode 8. The fourth electrode 8 can be integrally formed with the first electrode 2, or connected by plugging, welding, etc., without limitation. The common electrode can be arranged on the perpendicular midline of the two third electrodes 7, or offset from the perpendicular midline of the two third electrodes 7, without limitation.

[0086] Combine Figure 5 as well as Figure 6 In some embodiments, the sewage tank cover assembly a may further include a support member 9, which may be plate-shaped, with its top end connected to the bottom of the cover body 1 and its bottom end extending away from the cover body 1. A groove 901 may be provided on the support member 9, and the fourth electrode 8 may be provided on the groove 901 of the support member 9. The fourth electrode 8 may be fixed to the groove 901 of the support member 9 by bolts or bonding. Figure 4 In some embodiments, the bottom end of the fourth electrode 8 extends out of the bottom end of the support member 9, and the portion of the fourth electrode 8 extending out of the bottom end of the support member 9 can be configured as the fifth trigger portion 801, or / and, a conductive hole 902 can also be provided at the bottom of the support member 9, and the portion of the fourth electrode 8 exposed to the conductive hole 902 can also be configured as the fifth trigger portion 801.

[0087] In other embodiments, the fourth electrode 8 may not be connected to the first electrode 2. The fourth electrode 8 is provided on the cover 1 as an independent electrode for use with the third triggering unit 701 and the fourth triggering unit 702. There is no limitation here.

[0088] It should be noted that the non-triggering portion of each electrode can be covered with an electrode housing. This housing can be made of hydrophobic and oleophobic Teflon or PP, and its smooth surface effectively prevents the adhesion of sewage within the sewage tank B. Furthermore, because the electrodes used for water level detection are cylindrical, water films between the electrodes can be prevented from causing conduction and leading to false water level alarms, thus ensuring excellent practicality.

[0089] In the related art, since the air induction member d is connected to the sewage tank b via the air outlet 101 to extract air from the sewage tank b to create a negative pressure in the sewage tank b, in actual use, water in the sewage tank b may enter the air induction member d through the air outlet 101, affecting the normal operation of the air induction member d.

[0090] Based on the above technical problems, the present application further improves the sewage tank cover assembly a to improve the phenomenon that the water in the sewage tank b enters the air induction member d through the air outlet portion 101, so as to ensure the normal operation of the air induction member d to a certain extent.

[0091] Figure 15 Shown Figure 4 The structural diagram of the cover body, combined with Figure 1 、 Figure 2 、 Figure 4 、 Figure 9 as well as Figure 15 The sewage tank cover assembly a may further include an air outlet body 11, which is connected to the air outlet portion 101 of the cover body 1, and an air inlet 1101 is provided on the side wall of the air outlet body 11. A water retaining portion 1102 is provided at the bottom of the air outlet body 11 to prevent the water in the sewage tank b from entering the air outlet body 11.

[0092] The sewage tank cover assembly a provided by the present application has an air outlet body 11 connected to the air outlet portion 101 of the cover body 1, and an air inlet 1101 is provided on the side of the air outlet body 11. The air in the sewage tank b can be drawn into the air outlet body 11 through the air inlet 1101, and then drawn out of the sewage tank b through the air inlet member d; since a water retaining portion 1102 is provided at the bottom of the air outlet body 11, when there is water in the sewage tank b, if the device is tilted toward the opening direction of the air inlet 1101, the water retaining portion 1102 at the bottom of the air outlet body 11 can block the water in the sewage tank b. The water in the sewage tank b is prevented from flowing into the air outlet body 11, and is also prevented from further entering the air inducing member d, thereby protecting the air inducing member d. If the equipment is tilted in other directions, since the air outlet body 11 is not provided with an air inlet 1101 in other directions, the water in the sewage tank b cannot enter the air outlet body 11, thereby improving the phenomenon that the water in the sewage tank b enters the air inducing member d through the air outlet portion 101, so as to ensure the normal operation of the air inducing member d to a certain extent, and has good practicality.

[0093] In some embodiments, the air inlet 1101 of the air outlet body 11 can face the front side of the sewage tank b. When there is water in the sewage tank b, if the device tips forward, the water retaining portion 1102 at the bottom of the air outlet body 11 can block the water in the sewage tank b, preventing it from flowing into the air outlet body 11 and further entering the air induction member d, thereby protecting the air induction member d. In other embodiments, the air inlet 1101 of the air outlet body can be set on the left, right, or rear side, which will not be detailed here.

[0094] In some embodiments, at least a portion of the bottom of the air outlet body 11 is provided with a first inclined surface, the side of the first inclined surface facing the air inlet 1101 is lower than the side of the first inclined surface away from the air inlet 1101, and the first inclined surface is configured as a water retaining portion 1102. When there is water in the sewage tank b, if the device is tilted toward the opening direction of the air inlet 1101, the first inclined surface at the bottom of the air outlet body 11 can block the water in the sewage tank b, preventing the water from flowing into the air outlet body 11, and also preventing the water from further entering the air inducing member d, thereby protecting the air inducing member d. There can be only one first inclined surface, or multiple first inclined surfaces can be provided along the air inlet direction ( Figure 16 As shown), the slopes of the multiple first inclined surfaces may be consistent or inconsistent, and there is no limitation here.

[0095] In other embodiments, at least part of the bottom of the air outlet body 11 may also be provided with a first step, which may be configured as a water retaining portion 1102. When there is water in the sewage tank b, if the device is tilted toward the direction of the air inlet 1101, the step at the bottom of the air outlet body 11 may block the water in the sewage tank b, preventing the water from flowing into the air outlet body 11 and further from entering the air inducing member d, thereby protecting the air inducing member d. The first step may be provided with only one, or may be provided with multiple ( Figure 17 ), no limitation is given here.

[0096] Figure 18 Shown Figure 15 Another perspective of the structural diagram, combined with Figure 15 as well as Figure 18 An air outlet cavity 1103 and an air inlet cavity 1104 can be provided on the air outlet body 11, the air inlet cavity 1104 and the air outlet cavity 1103 are connected, the air inlet 1101 is provided on the side of the air inlet cavity 1104, and the bottom of the air inlet cavity 1104 can be configured as a first inclined surface as a water retaining portion 1102 to prevent the water in the sewage tank b from entering the air inlet cavity 1104.

[0097] Combine Figure 18 In some embodiments, a water guide portion 1105 is provided at the bottom of the air outlet cavity 1103, and the water guide portion 1105 is located downstream of the water retaining portion 1102 in the wind direction. When the equipment is working or in an abnormal use state, if water enters the air outlet body 11, when the equipment is vertical, the water can flow into the sewage tank b along the water guide portion 1105 and the bottom of the air inlet cavity 1104, and can also prevent the water in the air outlet body 11 from entering the air inducing member d to a certain extent, thereby ensuring the normal operation of the air inducing member d to a certain extent, and has good practicality.

[0098] In some embodiments, at least a portion of the bottom of the air outlet cavity 1103 is provided with a second inclined surface, the bottom of the second inclined surface is higher than the top of the first inclined surface, and the second inclined surface is configured as the above-mentioned water guide portion 1105. When the device is in operation or in abnormal use, if water enters the air outlet body 11, when the device is vertical, the water can flow into the sewage tank b along the second inclined surface at the bottom of the air outlet cavity 1103 and the bottom of the air inlet cavity 1104. It can also prevent the water in the air outlet body 11 from entering the air inlet member d to a certain extent, thereby ensuring the normal operation of the air inlet member d, which has good practicality. There can be only one second inclined surface, or multiple second inclined surfaces can be provided along the air inlet direction (as shown in 19). The slopes of the multiple first inclined surfaces can be consistent or inconsistent, and there is no limitation here.

[0099] In other embodiments, at least part of the bottom of the air outlet cavity 1103 may also be provided with a second step, which may be configured as a water guide 1105. When the device is in operation or in abnormal use, if water enters the air outlet body 11, when the device is vertical, the water may flow into the sewage tank b along the second inclined surface and the bottom of the air inlet cavity 1104. This may also prevent the water in the air outlet body 11 from entering the air inducing member d to a certain extent, thereby ensuring the normal operation of the air inducing member d, which has good practicality. There may be only one second step, or multiple steps may be provided along the air inlet direction (such as Figure 20 As shown), the heights of the multiple second steps may be consistent or inconsistent, and there is no limitation here.

[0100] Combine Figure 15 as well as Figure 18 In some embodiments, the bottom of the air outlet cavity 1103 may include a first bottom 1106 and a second bottom 1107, the first bottom 1106 connects the front and rear sides of the air outlet cavity 1103, the water guide portion 1105 is arranged on the first bottom 1106, and the second bottom 1107 is arranged on the side of the width direction of the first bottom 1106, the second bottom 1107 is connected to the front side of the air outlet cavity 1103, and there is a distance between the second bottom 1107 and the rear side of the air outlet cavity 1103, the second bottom 1107 is constructed as the top of the air inlet cavity 1104, and the bottom of the air inlet cavity 1104 extends to the rear side of the air outlet cavity 1103. When the air induction member d is working, the air in the sewage tank b enters the air inlet box through the air inlet 1101 on the side of the air inlet cavity 1104, flows through the air inlet cavity 1104 and the air outlet cavity 1103 in turn, and finally flows out from the air outlet at the top of the air outlet cavity 1103, so that the sewage tank b is in a negative pressure state.

[0101] Combine Figure 18In some embodiments, the second bottom 1107 of the air outlet cavity 1103 may be higher than the first bottom 1106, and the bottom of the air inlet cavity 1104 may be lower than the first bottom 1106, so that the rear side of the air inlet cavity 1104 is connected to the air outlet cavity 1103. The entire first bottom 1106 can serve as a second inclined surface, thereby serving as the water guide 1105.

[0102] Combine Figure 15 as well as Figure 18 In some embodiments, two air inlet cavities 1104 may be provided, with the two air inlet cavities 1104 being oppositely disposed on either side of the width direction of the air outlet cavity 1103. In this case, the cross-section of the air outlet cavity 1103 may gradually decrease along the air inlet direction, and the air outlet cavity 1103 may be in the shape of an inverted convex character.

[0103] Combine Figure 4 as well as Figure 15 In some embodiments, the sewage tank cover assembly a may further include an air guide 12 connected to the bottom of the cover body 1. When the sewage tank cover assembly a is assembled in the sewage tank b, both sides of the air guide 12 in the width direction contact the side walls of the sewage tank b. A distance is provided between the bottom of the air guide 12 and the bottom of the sewage tank b to allow air to pass through. The air inlet cavity 1104 may be connected to the air guide 12, and the air outlet of the air inlet cavity 1104 is provided on the air guide 12. When the air induction member d is in operation, the air in the sewage tank b is guided by the air guide 12 into the air inlet 1101 on the side of the air inlet cavity 1104, then introduced into the air inlet housing, sequentially flowing through the air inlet cavity 1104 and the air outlet cavity 1103, and finally flowing out of the air outlet at the top of the air outlet cavity 1103, thereby creating a negative pressure state in the sewage tank b.

[0104] The middle part of the air guide 12 can be provided with an opening to avoid the pipe provided in the sewage tank b. Figure 4 as well as Figure 15The sewage tank cover assembly a also includes two spaced apart wind limiting members 13, the top of the wind limiting member 13 is connected to the bottom of the cover body 1, and one side of the wind limiting member 13 is connected to the wind guide member 12. When the sewage tank cover assembly a is assembled in the sewage tank b, the other side of the wind limiting member 13 contacts the side wall of the sewage tank b, and the bottom of the wind limiting member 13 is spaced apart from the bottom of the sewage tank b. The air outlet of the air inlet cavity 1104 is arranged on the outside of the partition 6 on both sides, and the partition 6 and the wind guide member 12 and the side wall of the sewage tank b can be constructed into an air induced passage. When the air induced member d is working, the air in the sewage tank b is guided by the air induced passage into the air inlet 1101 on the side of the air inlet cavity 1104, and then is introduced into the air inlet box body, flows through the air inlet cavity 1104 and the air outlet cavity 1103 in turn, and finally flows out from the air outlet at the top of the air outlet cavity 1103, so that the sewage tank b is in a negative pressure state. The setting of the air induced passage can reduce the air induced area to improve the air induced efficiency.

[0105] In order to improve the sealing effect, a seal can be provided between the periphery of the air guide 12 and the periphery of the partition 6 and the side wall of the sewage tank b, so that the air can only be drawn out in a predetermined direction to avoid turbulence and improve the air induction efficiency.

[0106] Combine Figure 4-Figure 6 In some embodiments, the sewage tank cover assembly a may further include a bracket 17 connected to the bottom of the cover body 1. Two brackets 17 may be provided. When the sewage tank cover assembly a is assembled within the sewage tank b, the brackets 17 are supported on the sidewall of the sewage tank b. In specific implementations, the brackets 17 may be supported on the flat surface of the tabs 15 on the sidewall of the sewage tank b to ensure that the seal can effectively cooperate with the inner wall of the sewage tank b, thereby improving the sealing effect between the air guide 12 and the partition 6 and the sidewall of the sewage tank b.

[0107] Combine Figure 4-Figure 6 , two partitions 6 can be set on the front side of the air guide 12, and two support members 9 can be set on the rear side of the air guide 12. The air guide 12, the partition 6 and the support member 9 can be connected to the cover body 1 in an integrally formed manner to facilitate assembly.

[0108] Combine Figure 1 as well as Figure 2 In some embodiments, a filter element 16 may be further provided in the air outlet portion 101. The filter element 16 is provided in the air outlet cavity 1103 to filter out impurities contained in the air to prevent the impurities from entering the air induction member d.

[0109] In a second aspect of the present application, the present application further provides a sewage tank, which includes a tank body b1 and the above-mentioned sewage tank cover assembly a. Figure 21 Shown Figure 1 Schematic diagram of the sewage tank. Figure 1 、 Figure 2 as well as Figure 21 The box body b1 is provided with an inlet and outlet b2, and the cover body 1 of the above-mentioned sewage tank cover assembly a is detachably arranged in the inlet and outlet b2 of the box body b1.

[0110] The sewage tank provided in the present application can not only reduce the risk of water droplets generated on the surface of the water body in the sewage tank b being sucked into the draft member d, so that the draft member d can operate normally, but also can detect the water level of the sewage tank b in different postures, and can also prevent the water body in the sewage tank b from entering the draft member d, and has good practicality.

[0111] Combine Figure 4 The periphery of the cover 1 may be provided with a seal 18 to ensure a good sealing effect between the cover 1 and the inlet and outlet b2 of the box b1, thereby preventing the water in the box b1 from flowing to other locations of the device through the inlet and outlet b2.

[0112] In a third aspect of the present application, the present application further provides a cleaning device, which includes the above-mentioned sewage tank.

[0113] The cleaning equipment provided in the present application can not only reduce the risk of water droplets generated on the surface of the water body in the sewage tank b being sucked into the draft member d, so that the draft member d can operate normally, but also can detect the water level of the sewage tank b in different postures, and can also prevent the water body in the sewage tank b from entering the draft member d, and has good practicality.

[0114] The cleaning device may be a floor scrubber or other types of cleaning devices, such as a mop, a water suction machine, or a sweeper, etc., and is not limited here.

[0115] When the cleaning device is operating in this target posture, the user pushes and pulls the device, and the sewage in the sewage tank b will shake under the action of inertia, so that the first trigger part 201 and the second trigger part 301 will not be continuously in the on state, and the air-inducing part d will resume its original power operation, which is not conducive to the normal operation of the air-inducing part d.

[0116] In order to ensure that the cleaning equipment can maintain the low-power operation of the air-inducing member d under the target posture normally, the present application, in its fourth aspect, also provides a control method for the cleaning equipment, which includes: the water in the sewage tank b conducts the first trigger part 201 and the second trigger part 301 to output a first trigger signal; responding to the first trigger signal; according to the first trigger signal, controlling the operating power of the fan to be reduced to a preset power until the operating time of the preset power reaches a preset time.

[0117] In this control method, when the water in the sewage tank b conducts the first trigger part 201 and the second trigger part 301, the operating power of the air inducing member d is immediately controlled to be reduced to a preset power. During the preset time period in which the air inducing member d operates at the preset power, regardless of whether the first trigger part 201 and the second trigger part 301 are in the conducting state, the air inducing member d still operates at the preset power. That is, the air inducing member d has a delay function when operating at the preset power. Therefore, when the sewage in the sewage tank b sways under the action of inertia and the first trigger part 201 and the second trigger part 301 are not continuously in the conducting state, the air inducing member d can also be operated at the preset power, thereby reducing the risk of water droplets generated on the surface of the water in the sewage tank b being sucked into the air inducing member d, so that the air inducing member d can operate normally, which has good practicality.

[0118] After controlling the fan to operate at a preset power level from its current operating power level based on the first trigger signal, the method further includes determining whether the first trigger signal has been received within the operating time period; if so, updating the start time of the operating time period. Specifically, after air inducing member d receives the first trigger signal within the operating time period, the preset time period is reset so that air inducing member d continues to operate at the preset power level for the preset time period. This reduces the risk of water droplets generated on the surface of the water in sewage tank b being drawn into air inducing member d, allowing air inducing member d to operate normally, thus providing excellent practicality.

[0119] After controlling the fan to reduce its current operating power to a preset power level based on the first trigger signal, the method further includes determining whether the first trigger signal is received at the end of the operating time; if so, controlling the fan to continue operating at the preset power level for a preset time period; if not, controlling the fan to return to its normal operating power level. That is, if no response to the first trigger signal is received after the end of the operating time period, it can be determined that the sewage tank b is not in the target position, and the air inducing member d can be controlled to operate at the normally set operating power level to ensure that the floor scrubber has good cleaning efficiency.

[0120] In some embodiments, the preset duration may be 3-5 seconds, or may be set accordingly based on actual operating conditions, and is not limited here.

[0121] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0122] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0123] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0124] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0125] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sewage tank cover assembly, for installation on a sewage tank of a cleaning device, wherein the cleaning device is provided with an air inducing member for forming a negative pressure in the sewage tank, characterized in that: The sewage tank cover assembly includes: The cover body is provided with an air outlet portion, and the air outlet portion is connected to the air inducing member; A first electrode and a second electrode are respectively connected to the cover body and connected to the contact piece on the cover body. The first electrode has a first trigger part and the second electrode has a second trigger part. When the first trigger part and the second trigger part are conducted by the water in the sewage tank, a trigger signal is generated, so that the cleaning device adjusts the operating parameters of the air induction member according to the corresponding trigger signal.

2. The sewage tank cover assembly according to claim 1, characterized in that: When the sewage tank is tilted toward the back of the sewage tank, the first triggering part and the second triggering part are connected by water in the sewage tank.

3. The sewage tank cover assembly according to claim 2, characterized in that: The inclination angle of the sewage tank is less than or equal to 20°.

4. The sewage tank cover assembly according to claim 2 or 3, characterized in that: Projections of the first triggering portion and the second triggering portion along the width direction of the sewage tank at least partially overlap.

5. The sewage tank cover assembly according to claim 4, characterized in that: The first electrode comprises: a first pole piece, disposed at the bottom of the cover, the first pole piece being configured as the first triggering portion; The second pole piece is connected to the first pole piece, and the second pole piece passes through the cover body and extends to above the top of the cover body.

6. The sewage tank cover assembly according to claim 5, characterized in that: The first pole piece is provided with a process hole, and the bottom end of the second pole piece is connected to one side of the process hole in the length direction.

7. The sewage tank cover assembly according to claim 5 or 6, characterized in that: The second electrode comprises: a third pole piece passing through the cover and extending to below the bottom of the cover, wherein the portion of the third pole piece disposed below the bottom of the cover is configured as the second triggering portion; A fourth pole piece has one end connected to the top of the third pole piece, and the fourth pole piece is arranged on the top of the cover body.

8. The sewage tank cover assembly according to claim 7, characterized in that: The second electrode further comprises: The fifth pole piece has a bottom end connected to the other end of the fourth pole piece and a top end extending in a direction away from the cover body.

9. The sewage tank cover assembly according to any one of claims 1-3, 5-6 and 8, characterized in that: The sewage tank cover assembly also includes: A separator is connected to the bottom of the cover and is arranged between the first triggering part and the second triggering part.

10. The sewage tank cover assembly according to any one of claims 1-3, 5, 6 or 8, characterized in that: The sewage tank cover assembly also includes: a third electrode connected to the cover, the third electrode having a third triggering portion, and the third triggering portion is disposed below the cover; A fourth electrode is connected to the cover, and the fourth electrode has a fifth triggering portion, and the fifth triggering portion is arranged below the cover; wherein; When the sewage tank is at a first target water level, the water in the sewage tank conducts the third trigger unit and the fifth trigger unit to output first water full information.

11. The sewage tank cover assembly according to claim 10, wherein: The fifth triggering portion is disposed below the third triggering portion.

12. The sewage tank cover assembly according to claim 10, wherein: The third electrode further has a fourth triggering portion, and the fourth triggering portion is disposed between the cover and the third triggering portion; wherein: When the sewage tank is at a second target water level, the water in the sewage tank conducts the fourth triggering unit and the first triggering unit to output second water full information.

13. The sewage tank cover assembly according to claim 12, wherein: The third electrode comprises: case; a first pole and a second pole, wherein the bottom ends of the first pole and the second pole both extend out of the bottom of the housing, the portion of the first pole extending out of the bottom of the housing is configured as the third trigger portion, and the portion of the second pole extending out of the bottom of the housing is configured as the fourth trigger portion; a sixth pole piece, one end of which is disposed in the housing and the other end of which extends out of the housing, the sixth pole piece being connected to the first pole and the second pole; The seventh pole piece has a bottom end connected to the other end of the sixth pole piece and a top end passing through the cover body.

14. The sewage tank cover assembly according to claim 10, wherein: The fourth electrode is connected to the first electrode to form a common electrode.

15. The sewage tank cover assembly according to claim 14, wherein: Two third electrodes are arranged opposite to each other.

16. The sewage tank cover assembly according to claim 10, wherein: The sewage tank cover assembly also includes: The support member, the bottom end of the fourth electrode extends out of the bottom end of the support member, the portion of the fourth electrode extending out of the bottom end of the support member is configured as the fifth trigger portion, or / and a conductive hole is provided at the bottom of the support member, and the portion of the fourth electrode exposed to the conductive hole is configured as the fifth trigger portion.

17. The sewage tank cover assembly according to any one of claims 1-3, 5-6, 8 and 11-16, characterized in that: The sewage tank cover assembly also includes: The air outlet body is connected to the air outlet portion of the cover body, an air inlet is provided on the side wall of the air outlet body, and a water retaining portion is provided at the bottom of the air outlet body to prevent the water in the sewage tank from entering the air outlet body.

18. The sewage tank cover assembly according to claim 17, wherein: The air inlet of the air outlet body faces the front side of the sewage tank.

19. The sewage tank cover assembly according to claim 17, wherein: At least a portion of the bottom of the air outlet body is provided with a first slope, a side of the first slope facing the air inlet is lower than a side of the first slope away from the air inlet, and the first slope is configured as a water retaining portion.

20. The sewage tank cover assembly according to claim 19, wherein: An air outlet cavity and an air inlet cavity are provided on the air outlet body. The air inlet cavity is connected to the air outlet cavity. The air inlet is provided on the side of the air inlet cavity.

21. The sewage tank cover assembly according to claim 20, wherein: A water guide portion is provided at the bottom of the air outlet cavity, and the water guide portion is located downstream of the water retaining portion in the wind direction.

22. The sewage tank cover assembly according to claim 21, wherein: At least a portion of the bottom of the air outlet cavity is provided with a second inclined surface, the bottom of the second inclined surface is higher than the top of the first inclined surface, and the second inclined surface is configured as the water guide portion.

23. The sewage tank cover assembly according to claim 22, wherein: The bottom of the air outlet cavity includes a first bottom and a second bottom, the first bottom connects the front and rear sides of the air outlet cavity, the water guide portion is arranged on the first bottom, the second bottom is arranged on the side in the width direction of the first bottom, the second bottom is connected to the front side of the air outlet cavity, and there is a distance between the second bottom and the rear side of the air outlet cavity, the second bottom is constructed as the top of the air inlet cavity, and the bottom of the air inlet cavity extends and is connected to the rear side of the air outlet cavity.

24. The sewage tank cover assembly according to claim 23, wherein: There are two air inlet cavities, which are arranged oppositely on both sides of the air outlet cavity in the width direction.

25. A sewage tank, characterized in that: The sewage tank comprises: A box body, wherein the box body is provided with an inlet and an outlet; The sewage tank cover assembly according to any one of claims 1 to 24, wherein the cover body of the sewage tank cover assembly is detachably disposed in the inlet and outlet.

26. A cleaning device, characterized in that: The cleaning device comprises the sewage tank according to claim 25.

27. The cleaning device according to claim 26, characterized in that The cleaning device is a floor scrubber or a floor mopping machine.

Images