Sewage collecting and discharging box and cleaning device

Abstract

The invention provides a dirt collecting and discharging box and a cleaning device, the dirt collecting and discharging box comprises a box body and a base, a dirt discharging through opening is formed in the base, a sealing cover and a limiting switch plate are connected to the base, the sealing cover has a sealing state and a dirt discharging state, and the limiting switch plate has a sealing cover limiting position and a releasing position; the base is further provided with a switch plate locking structure, the switch plate locking structure comprises a stop piece, and the stop piece has a switch plate locking state in which the stop piece is connected with the limiting switch plate so that the limiting switch plate can be located at the sealing cover limiting position and a switch plate unlocking state in which the stop piece is disconnected with the limiting switch plate so that the limiting switch plate can be unlocked. According to the invention, the pollution phenomenon caused by the opening of the drain outlet due to the fact that a user mistakenly touches the push plate which is arranged on the limit switch plate and protrudes out of the outer side of the base is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning equipment design, and in particular relates to a sewage collecting and discharging box and a cleaning device. Background Art

[0002] At present, a sewage tank is provided on the floor scrubber to store the sewage generated during the floor scrubbing process. The sewage tank is a component that needs to be disassembled and needs to be cleaned in water. Therefore, it is not suitable to set some live components without waterproof seals on the sewage tank. In order to solve the problems of inconvenient cleaning of the sewage tank and unclean manual cleaning, the floor scrubber industry currently adopts an automatic cover opening device designed by the fuselage to realize automatic opening and closing of the flip cover structure on the sewage tank, thereby realizing the function of automatic sewage discharge after the floor scrubber returns to the base station. For example, the patent with publication number CN117694775A proposes a sewage tank for a floor scrubber, in which a flip cover structure of the sewage tank needs to be used in conjunction with an automatic cover opening device of the floor scrubber body, and an outwardly extending locking plate is provided at the bottom of the sewage tank, and the locking plate is used in conjunction with the automatic cover opening device on the body to realize the automatic sewage discharge function of the sewage tank. However, after the sewage tank is removed from the floor scrubber, since the aforementioned locking plate is an outwardly convex structure, it is easy for humans to accidentally touch it, causing the sewage outlet of the sewage tank to open directly, thereby causing the sewage in the sewage tank to leak, thereby causing pollution to the user and the cleaned floor. Summary of the invention

[0003] Therefore, the present invention provides a sewage collecting and draining box and a cleaning device, which can overcome the technical problem that the locking piece used in conjunction with the automatic cover opening device configured in the related technology may be accidentally touched by humans after the sewage collecting and draining box is removed from the machine body, causing the sewage outlet to open and thus causing pollution.

[0004] In order to solve the above problems, the present invention provides a sewage collecting and discharging box, comprising a box body and a base at the bottom of the box body, a sewage outlet is formed on the bottom wall of the box body, a sewage discharge through-hole corresponding to the position of the sewage outlet is formed on the base, a sealing cover and a limit switch plate are connected to the base, the sealing cover has a sealing state for sealing the sewage discharge through-hole and a sewage discharge state for conducting the sewage discharge through-hole, the limit switch plate has a sealing cover limit position for contacting with the sealing cover to limit the sealing cover to be in the sealing state, and a release position for disengaging from the sealing cover to allow the sealing cover to switch from the sealing state to the sewage discharge state, the limit switch plate has a push plate extending from the outside of the base, and a switch plate locking structure is also provided on the base, the switch plate locking structure includes a stopper, and the stopper has a switch plate locking state for connecting with the limit switch plate to make the limit switch plate in the sealing cover limit position and a switch plate unlocking state for disengaging from the limit switch plate to release the limit switch plate.

[0005] In some embodiments, one end of the limit switch plate is rotatably connected to the base via a first pivot axis, and a first elastic member is clamped between the limit switch plate and the base. The first elastic member can apply force to the side wall of the limit switch plate away from the sealing cover so that the limit switch plate can switch from the release position to the sealing cover limit position in a swinging manner around the first pivot axis.

[0006] In some embodiments, the push plate is formed on a side of the first elastic member away from the first pivot axis.

[0007] In some embodiments, a slideway is formed on the base, and the stopper is slidably connected in the slideway and switches between a locked state and an unlocked state of the switch plate in a telescopic manner.

[0008] In some embodiments, the switch plate locking structure also includes a push plate and a connecting rod between the push plate and the stop member, the first end of the connecting rod is rotationally connected to the stop member, the second end of the connecting rod is rotationally connected to the push plate, and the push plate can be driven to move back and forth in a preset direction to drive the stop member to extend and retract through the swing of the connecting rod.

[0009] In some embodiments, a accommodating blind hole is further formed on the base, the opening of the accommodating blind hole is located on the bottom side end surface of the base, a vertical rod is provided in the accommodating blind hole, the push piece is slidably sleeved on the vertical rod, and a second elastic member is provided between the accommodating blind hole and the push piece, when the push piece is applied with a force toward the bottom wall of the accommodating blind hole, the stop piece retracts and is in an unlocked state of the switch plate, and when the push piece is not applied with a force toward the bottom wall of the accommodating blind hole, the stop piece extends and is in a locked state of the switch plate.

[0010] In some embodiments, the side of the stopper in contact with the limit switch plate has a convex strip arranged along the extension direction thereof.

[0011] In some embodiments, an elastic convex ring extending toward the center line of the accommodating blind hole is formed on the inner wall of the hole, the outer diameter of the push piece is larger than the inner ring diameter of the elastic convex ring, and the push piece can enter and be limited on the side of the elastic convex ring close to the bottom wall of the accommodating blind hole by relying on the interference deformation between it and the elastic convex ring; and / or, the second elastic member is mounted on the vertical rod.

[0012] The present invention also provides a cleaning device, comprising the above-mentioned sewage collecting and discharging box; and / or, the cleaning device is one of a floor scrubber, a sweeping robot, and a vacuum cleaner.

[0013] In some embodiments, the cleaning device also includes a body for assembling the sewage collecting and draining box. When the switch plate locking structure also includes a push piece, a blind hole is formed on the base and the push piece is mounted on the vertical rod in the blind hole, a top column extending toward the bottom wall of the blind hole is formed on the surface of the body that cooperates with the base. When the sewage collecting and draining box is assembled on the body, the top column is inserted into the blind hole and applies force to the bottom surface of the push piece.

[0014] The sewage collecting and discharging box and cleaning device provided by the present invention have the following beneficial effects:

[0015] A switch plate locking structure is provided on the base, and the switch plate locking state and the switch plate unlocking state are switched by the stop member. When the sewage collecting and draining box is removed from the mounting carrier alone, the stop member is switched to the switch plate locking state so that the limit switch plate is reliably in the sealing cover limit position, thereby being able to lock the position of the limit switch plate, effectively preventing the sewage outlet from opening and causing pollution due to the user accidentally touching the push plate protruding from the outside of the base of the limit switch plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the sewage collecting and discharging box in the embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the base (top view);

[0019] Figure 3 yes Figure 2 An exploded view of the switch plate locking structure in FIG.

[0020] Figure 4 1 is a schematic diagram of the assembly of the switch plate locking structure and the base in an embodiment of the present invention, wherein the arrow in the figure indicates the assembly direction;

[0021] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the base (bottom view);

[0022] Figure 6The moving trend direction of each component in the switch plate locking structure in the embodiment of the present invention is shown when the bottom surface of the push piece is forced upward or the push plate of the limit switch plate is forced in the opening direction;

[0023] Figure 7 The movement trend direction of each component in the switch plate locking structure in the embodiment of the present invention is shown when no force is applied to the bottom surface of the push piece and the push plate of the limit switch plate;

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of a cleaning device (floor scrubber) according to another embodiment of the present invention (partial cross-section);

[0025] Fig. 9 yes Figure 8 A partial enlarged view of point A in the middle.

[0026] The accompanying drawings are marked as follows:

[0027] 1. Box body; 11. Base; 111. Slide; 112. Accommodating blind hole; 113. Vertical rod; 114. Elastic convex ring; 12. Sewage discharge through-hole; 13. Sewage suction through-hole; 2. Sealing cover; 21. Rotating shaft; 3. Limit switch plate; 31. Push plate; 32. First elastic member; 4. Switch plate locking structure; 41. Stop member; 411. Protruding strip; 42. Push piece; 43. Connecting rod; 44. Second elastic member; 51. Sliding block; 52. Crank; 100. Body; 101. Top column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90° or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] See also Figure 1 and Fig. 9 As shown, according to an embodiment of the present invention, there is provided a sewage collecting and draining box, comprising a box body 1 and a base 11 at the bottom of the box body 1, a sewage discharge port and a sewage suction port (not shown and not labeled) are formed on the bottom wall of the box body 1, a sewage discharge through-port 12 corresponding to the position of the sewage discharge port and a sewage suction through-port 13 corresponding to the position of the sewage suction port are formed on the base 11, a sealing cover 2 and a limit switch plate 3 (i.e., a locking plate) are connected to the base 11, the sealing cover 2 has a sealing state of sealing the sewage discharge through-port 12 and a sewage discharge state of connecting the sewage discharge through-port 12, and it can be understood that the sealing of the sewage discharge through-port by the sealing cover 2 also realizes the sealing of the sewage discharge port on the box body 1, for details, see Figure 2As shown, a slider 51 is also connected to the base 11, and the slider 51 is slidably connected to the base 11. The slider 51 is driven and connected to the rotating shaft 21 of the sealing cover 2 through a crank 52, so that the sealing cover 2 can be switched from the aforementioned sewage discharge state to the sealing state under the push of the corresponding external driving mechanism (for example, the push rod motor on the body of the floor scrubber). In another embodiment, an elastic reset member is clamped between the aforementioned slider 51 and the corresponding vertical wall of the base 11. The elastic reset member is, for example, a spring, which applies force to one side of the slider 51 to use elastic force to switch the sealing cover 2 from the sealing state to the sewage discharge state when the slider 51 is not subjected to the aforementioned external driving mechanism. The limit switch plate 3 has a sealing cover limit position that contacts with the sealing cover 2 to limit the sealing cover 2 to be in the sealing state, and is out of contact with the sealing cover 2 to allow the sealing cover 2 to switch from the sealing state to the sewage discharge state. The limit switch plate 3 has a push plate 31 extending outward from the outside of the base 11. It can be understood that the limit switch plate 3 also has an engaging structure with the sealing cover 2 (such as a protruding hook, not shown in the figure) to achieve that when the slider 51 is not applied with force, the limit switch plate 3 applies force to the sealing cover 2 to prevent the sealing cover 2 from being in a sewage discharge state under the action of the aforementioned elastic reset member, that is, the design purpose of the aforementioned limit switch plate 3 of the present invention is to be able to reliably lock the sealing cover 2 in a sealed state. A switch plate locking structure 4 is also provided on the base 11, and the switch plate locking structure 4 includes a stop member 41. The stop member 41 has a switch plate locking state connected to the limit switch plate 3 so that the limit switch plate 3 is in the sealing cover limit position and a switch plate unlocking state disconnected from the limit switch plate 3 so that the limit switch plate 3 is unlocked.

[0033] In this technical solution, a switch plate locking structure 4 is provided on the base 11, and the switch plate locking state and the switch plate unlocking state are switched by a stop member 41. When the sewage collecting and draining box is removed from the mounting carrier (such as the fuselage 100 described later), the stop member 41 is switched to the switch plate locking state so that the limit switch plate 3 is reliably in the sealing cover limit position, and the position of the limit switch plate 3 can be locked, effectively preventing the sewage outlet from opening and causing pollution due to the user accidentally touching the push plate 31 of the limit switch plate 3 protruding from the outside of the base 11.

[0034] In some embodiments, one end of the limit switch plate 3 is rotatably connected to the base 11 via a first pivot axis (not marked in the figure), and a first elastic member 32 is clamped between the limit switch plate 3 and the base 11. The aforementioned first elastic member 32 can be, for example, a spring. The first elastic member 32 can apply force to the side wall of the limit switch plate 3 away from the sealing cover 2 so that the limit switch plate 3 can switch from the release position to the sealing cover limit position in a swinging manner around the first pivot axis.

[0035] In this technical solution, the first elastic member 32 is arranged on the side of the limit switch plate 3 away from the sealing cover 2 so that the limit switch plate 3 can be in the sealing cover limit position in the absence of other external forces, that is, the normal position of the sealing cover 2 is the sealing cover limit position. In this way, after the sewage discharge is completed, it is only necessary to drive the aforementioned slider 51 to move a distance in the direction of closing the sealing cover 2 through an external driving component, and then the sealing cover 2 can be buckled with the limit switch plate 3, so that the sealing cover 2 can be stably in a sealed state, and the operation is simple and convenient.

[0036] In some embodiments, the push plate 31 is formed on a side of the first elastic member 32 away from the first pivot axis.

[0037] In this technical solution, the push plate 31 is formed on the side of the first elastic member 32 away from the first pivot axis, that is, the distance between the push plate 31 and the first pivot axis is greater than the distance between the first elastic member 32 and the first pivot axis, so that it is more labor-saving to move the push plate 31 to switch the limit switch plate 3 from the sealing cover limit position to the release position, which can save energy loss and reduce the selection cost (for example, a lower-priced small-power drive motor can be selected).

[0038] In some embodiments, a slideway 111 is formed on the base 11 , and the stopper 41 is slidably connected in the slideway 111 and switches between the switch plate locked state and the switch plate unlocked state in a telescopic manner.

[0039] In this technical solution, the stop member 41 is slidably connected to the slideway 111 on the base 11, and the stop member 41 can slide in a telescopic manner to achieve switching between the switch plate locked state and the switch plate unlocked state. The state switching of the stop member 41 is smooth, and the structure can be designed to be relatively compact.

[0040] See Figure 3As shown, in some embodiments, the switch plate locking structure 4 also includes a push piece 42 and a connecting rod 43 between the push piece 42 and the stop member 41, the first end of the connecting rod 43 is rotationally connected to the stop member 41, the second end of the connecting rod 43 is rotationally connected to the push piece 42, the push piece 42 can be driven to move back and forth in a preset direction to drive the stop member 41 to extend and retract through the swing of the connecting rod 43, and the aforementioned rotation connection can be achieved, for example, by inserting a corresponding rotation pin.

[0041] In this technical solution, the push piece 42, the connecting rod 43 and the stop member 41 objectively constitute a cam rocker mechanism, through which the linear displacement of the push piece 42 is converted into the linear displacement of the stop member 41, thereby realizing the telescopic switching of the stop member 41, and the structure is simple and compact.

[0042] In some embodiments, a accommodating blind hole 112 is further formed on the base 11, and the opening of the accommodating blind hole 112 is located on the bottom side end surface of the base 11. A vertical rod 113 is provided in the accommodating blind hole 112, and the push piece 42 is slidably sleeved on the vertical rod 113, and a second elastic member 44 is provided between the accommodating blind hole 112 and the push piece 42. When a force is applied to the push piece 42 toward the bottom wall of the accommodating blind hole 112, the stop piece 41 retracts and is in an unlocked state of the switch plate. When no force is applied to the push piece 42 toward the bottom wall of the accommodating blind hole 112, the stop piece 41 extends and is in a locked state of the switch plate.

[0043] See Figure 6 As shown in FIG. 1 , when a thrust is applied upward to the bottom surface of the push piece 42, the push piece 42 overcomes the elastic force of the second elastic member 44 and moves upward, which drives the connecting rod 43 rotatably connected thereto to move upward to the right, and the connecting rod 43 further drives the stopper 41 to slide rightward, thereby breaking away from contact with the push plate 31. At this time, when the push plate 31 is applied as shown in FIG. Figure 6 When the thrust is shown by the arrow in the figure, the limit switch plate 3 will overcome the first elastic member 32 abutting against it and swing away from the sealing cover 2 to the outside, thereby releasing the limit on the sealing cover 2. The sealing cover 2 will eventually open under the linkage action of the aforementioned elastic reset member, the slider 51 and the crank 52, that is, it is in the sewage discharge state.

[0044] Continue to see Figure 7As shown, when there is no upward thrust applied to the bottom side end face of the push piece 42, under the elastic force of the second elastic member 44, the push piece 42 is in the bottom position, and the force directions of the aforementioned stop member 41, the connecting rod 43 and the push piece 42 are in the same straight line and the three are in the same straight line. In this way, when an opening force is applied to the push plate 31, since the force directions of the aforementioned stop member 41, the connecting rod 43 and the push piece 42 are in the same straight line, the three form a horizontal force offset, and the components do not generate horizontal movement, so the position of the push plate 31 remains stationary, thereby achieving the purpose of preventing accidental touch.

[0045] See Figure 3 As shown, in some embodiments, the side of the stopper 41 that contacts the limit switch plate 3 has a convex strip 411 arranged along the extension direction thereof.

[0046] In this technical solution, by providing a relatively small convex strip 411 on the side of the stopper 41 facing the limit switch plate 3, the contact area between the stopper 41 and the limit switch plate 3 can be reduced, thereby reducing the friction between the two, so that the state switching of the stopper 41 can be ensured to be smoother. In this way, the cross section of the stopper 41 in the present invention is a convex shape, forming a long strip structure as a whole, which can further improve the compactness of the structure.

[0047] See Figure 6 As shown, in some embodiments, an elastic convex ring 114 extending toward the center line of the accommodating blind hole 112 is formed on the inner wall of the hole, and the outer diameter of the push piece 42 is larger than the inner ring diameter of the elastic convex ring 114, and the push piece 42 can enter and be limited on the side of the elastic convex ring 114 close to the bottom wall of the accommodating blind hole 112 by relying on the interference deformation between it and the elastic convex ring 114. It should be noted that the aforementioned accommodating blind hole 112 can be formed integrally on the base 11, and can also be assembled on the aforementioned base 11 as independent components. The present invention does not specifically limit the formation method thereof. In principle, the aforementioned elastic convex ring 114 can achieve the deformation requirement of the interference fit.

[0048] In this technical solution, the push piece 42 can rely on the interference deformation between it and the elastic convex ring 114 to enter and be limited to the side of the elastic convex ring 114 close to the bottom wall of the accommodating blind hole 112, so as to realize the installation and anti-dropping of the push piece 42 in the accommodating blind hole 112, and the structure is simple. Figure 5 As shown, the push piece 42 is specifically assembled into the accommodating blind hole 112 from bottom to top along the length direction of the vertical rod 113, and the assembly is convenient.

[0049] In a preferred embodiment, the second elastic member 44 is sleeved on the vertical rod 113 to ensure that the second elastic member 44 applies force to the push piece 42 evenly and deforms smoothly.

[0050] According to an embodiment of the present invention, a cleaning device is further provided. The aforementioned cleaning device is one of a floor scrubber, a sweeping robot, and a vacuum cleaner. The cleaning device includes the aforementioned sewage collecting and discharging box.

[0051] See Figure 8 and Fig. 9 As shown, in some embodiments, the cleaning device also includes a body 100 for assembling the sewage collecting and draining box. When the switch plate locking structure 4 also includes a push piece 42, a blind hole 112 is formed on the base 11, and the push piece 42 is sleeved on the vertical rod 113 in the blind hole 112, a top column 101 extending toward the bottom wall of the blind hole 112 is formed on the surface of the body 100 that cooperates with the base 11. When the sewage collecting and draining box is assembled on the body 100, the top column 101 is inserted into the blind hole 112 and applies force to the bottom surface of the push piece 42. In a preferred embodiment, the top column 101 is a sleeve, and the sleeve is sleeved on the radial outer side of the vertical rod 113 to ensure the accurate alignment of the top column 101 and the push piece 42, and to ensure that the top column 101 applies uniform force to the bottom side end surface of the push piece 42.

[0052] In this technical solution, by setting a top column 101 on the fuselage 100, the stop member 41 is automatically switched to the switch plate unlocking state when the sewage collecting and draining box is assembled on the fuselage 100, and the stop member 41 is automatically switched to the switch plate locking state after the sewage collecting and draining box is removed from the fuselage 100. Under the premise of preventing pollution caused by accidental touch by the user, the structure is simple, no control is required, and the manufacturing cost is low.

[0053] When the sewage collecting and draining box is assembled on the fuselage 100, the top column 101 on the fuselage 100 will extend into the accommodating blind hole 112 and exert force on the bottom side end surface of the push piece 42, so that the push piece 42 overcomes the elastic force of the second elastic member 44 and moves upward, thereby causing the stop member 41 to disengage from the push plate 31, that is, releasing the position lock of the limit switch plate 3, and the operation of the push rod motor on the fuselage 100 can freely control the position of the switch limit switch plate 3, and when the sewage collecting and draining box is to be removed from the fuselage 100, the top column 101 no longer exerts force on the push plate The push piece 42 is given an upward thrust. At this time, the elastic force of the second elastic member 44 acts on the top surface of the push piece 42 to make it move downward to a low position and be in the same straight line with the stop member 41 and the connecting rod 43. The user or the automatic sewage outlet switch provides a horizontal force to the stop member 41 which cannot be divided into an upward or downward force on the push piece 42. Therefore, the locking function of the sewage outlet can be realized (only by providing an upward or downward force to the push piece 42, thereby forming an upward or downward pulling force on the connecting rod 43, can the stop member 41 be moved left and right).

[0054] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A sewage collecting and discharging box, comprising a box body (1) and a base (11) at the bottom of the box body (1), a sewage outlet being formed on the bottom wall of the box body (1), a sewage discharge through-hole (12) corresponding to the position of the sewage outlet being formed on the base (11), a sealing cover (2) and a limit switch plate (3) being connected to the base (11), the sealing cover (2) having a sealing state for sealing the sewage discharge through-hole (12) and a sewage discharge state for connecting the sewage discharge through-hole (12), the limit switch plate (3) having a sealing cover limit position for contacting with the sealing cover (2) to limit the sealing cover (2) to be in the sealing state, and a release position for disengaging from the sealing cover (2) to allow the sealing cover (2) to switch from the sealing state to the sewage discharge state, the limit switch plate (3) having a push plate (31) extending outward from the base (11), characterized in that: The base (11) is also provided with a switch plate locking structure (4), the switch plate locking structure (4) comprising a stopper (41), the stopper (41) having a switch plate locking state in which the stopper is connected to the limit switch plate (3) so that the limit switch plate (3) is in the limit position of the sealing cover, and a switch plate unlocking state in which the stopper is disconnected from the limit switch plate (3) so that the limit switch plate (3) is unlocked.

2. The sewage collecting and draining box according to claim 1, characterized in that: One end of the limit switch plate (3) is rotatably connected to the base (11) via a first pivot axis, and a first elastic member (32) is clamped between the limit switch plate (3) and the base (11). The first elastic member (32) can apply force to the side wall of the limit switch plate (3) away from the sealing cover (2) so that the limit switch plate (3) can be switched from the release position to the sealing cover limit position in a swinging manner around the first pivot axis.

3. The sewage collecting and draining box according to claim 2, characterized in that: The push plate (31) is formed on a side of the first elastic member (32) away from the first pivot axis.

4. The sewage collecting and draining box according to claim 2, characterized in that: A slideway (111) is formed on the base (11), and the stopper (41) is slidably connected in the slideway (111) and switches between a switch plate locked state and a switch plate unlocked state in a telescopic manner.

5. The sewage collecting and draining box according to claim 4, characterized in that: The switch plate locking structure (4) further comprises a push piece (42) and a connecting rod (43) between the push piece (42) and the stop piece (41); a first end of the connecting rod (43) is rotatably connected to the stop piece (41); a second end of the connecting rod (43) is rotatably connected to the push piece (42); the push piece (42) can be driven to move reciprocatingly in a preset direction so as to drive the stop piece (41) to extend and retract through the swing of the connecting rod (43).

6. The sewage collecting and draining box according to claim 5, characterized in that: The base (11) is also formed with an accommodating blind hole (112), the opening of which is located on the bottom side end surface of the base (11), the accommodating blind hole (112) is provided with a vertical rod (113), the push piece (42) is slidably sleeved on the vertical rod (113), and a second elastic member (44) is provided between the accommodating blind hole (112) and the push piece (42), when a force is applied to the push piece (42) toward the hole bottom wall side of the accommodating blind hole (112), the stop member (41) is retracted to be in the unlocked state of the switch plate, and when no force is applied to the push piece (42) toward the hole bottom wall side of the accommodating blind hole (112), the stop member (41) is extended to be in the locked state of the switch plate.

7. The sewage collecting and draining box according to claim 6, characterized in that: The side surface of the stopper (41) in contact with the limit switch plate (3) has a convex strip (411) arranged along the extension direction thereof.

8. The sewage collecting and draining box according to claim 6, characterized in that: An elastic convex ring (114) extending toward the center line of the accommodating blind hole (112) is formed on the inner wall of the hole, the outer diameter of the push piece (42) is larger than the inner ring diameter of the elastic convex ring (114), and the push piece (42) can enter and be limited to the side of the elastic convex ring (114) close to the bottom wall of the accommodating blind hole (112) by relying on the interference deformation between it and the elastic convex ring (114); and / or the second elastic member (44) is sleeved on the vertical rod (113).

9. A cleaning device, characterized in that: It comprises the sewage collecting and discharging box according to any one of claims 1 to 8; and / or the cleaning device is one of a floor scrubber, a sweeping robot, and a vacuum cleaner.

10. The cleaning device according to claim 9, characterized in that It also includes a body (100) for assembling the sewage collecting and draining box. When the switch plate locking structure (4) also includes a push piece (42), a accommodating blind hole (112) is formed on the base (11), and the push piece (42) is mounted on the vertical rod (113) in the accommodating blind hole (112), a top column (101) extending toward the bottom wall of the accommodating blind hole (112) is formed on the surface of the body (100) and the base (11). When the sewage collecting and draining box is assembled on the body (100), the top column (101) is inserted into the accommodating blind hole (112) and exerts force on the bottom surface of the push piece (42).

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