Sewage collecting and discharging box and cleaning device

Abstract

The utility model provides a sewage collecting and discharging box and a cleaning device, the sewage collecting and discharging box comprises a box body and a base, a sewage discharging through opening is formed in the base, the base is connected with a sealing cover and a limiting switch plate, the sealing cover has a sealing state and a sewage 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 utility model, 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 utility model belongs to the technical field of cleaning equipment design, specifically relates to a kind of pollution collection and pollution discharge tank, cleaning device. BACKGROUND

[0002] At present, the sewage tank is arranged on the scrubber to store the sewage generated in the scrubbing process. The sewage tank is a component that needs to be disassembled and needs to be cleaned by wading. Therefore, some electric components without waterproof seal are not suitable for being arranged on the sewage tank. In order to solve the problem of inconvenient cleaning and manual cleaning of the sewage tank in the current scrubber industry, an automatic cover opening device is used to realize automatic opening and closing of the flip cover structure on the sewage tank, so as to realize the function of automatic pollution discharge after the scrubber returns to the base station. For example, the patent with the publication number CN117694775A proposes a scrubber sewage tank. The flip cover structure of the sewage tank needs to be used with the automatic cover opening device of the scrubber body. An outwardly extending locking piece is provided at the bottom of the sewage tank. The locking piece is used with the automatic cover opening device on the scrubber body, so as to realize the automatic pollution discharge function of the sewage tank. However, after the sewage tank is taken off from the scrubber, the aforementioned locking piece has a convex structure, which is easy to be touched by human error, causing the pollution discharge port of the sewage tank to be directly opened, thereby causing the leakage of sewage in the sewage tank and polluting the user and the cleaned ground. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the utility model provides a pollution collection and pollution discharge tank and a cleaning device, which can overcome the technical problem that the locking piece configured to be used with the automatic cover opening device in the related art is touched by human error after the pollution collection and pollution discharge tank is taken off from the scrubber body, causing the pollution discharge port to be opened and causing pollution.

[0004] In order to solve the above problems, the utility model provides a pollution collection and pollution discharge tank, which comprises a tank body and a base at the bottom of the tank body. A pollution discharge port is formed on the bottom wall of the tank body. A pollution discharge through hole corresponding to the position of the pollution discharge port 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 pollution discharge through hole and a pollution discharge state for opening the pollution discharge through hole. The limit switch plate has a sealing cover limit position for contacting the sealing cover to limit the sealing cover in the sealing state and a release position for being separated from the sealing cover to allow the sealing cover to switch from the sealing state to the pollution discharge state. The limit switch plate has a push plate extending outward from the base. The base is further provided with a switch plate locking structure. The switch plate locking structure comprises a stop piece. The stop piece is connected to the limit switch plate to make the limit switch plate in the switch plate locking state of the sealing cover limit position and is disconnected from the limit switch plate to make the limit switch plate in the switch plate unlocking state of the sealing cover limit position.

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

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

[0007] In some embodiments, a slide is formed on the base, and the stop member is slidingly connected in the slide and is switched between the switch plate locking state and the switch plate unlocking state in an extension and retraction manner.

[0008] In some embodiments, the switch plate locking structure further comprises a push piece and a connecting rod between the push piece and the stop member, a first end of the connecting rod is rotatably connected to the stop member, a second end of the connecting rod is rotatably connected to the push piece, and the push piece can be driven to move linearly in a reciprocating manner in a predetermined direction to drive the stop member to extend and retract through the swing of the connecting rod.

[0009] In some embodiments, a receiving blind hole is further formed on the base, an orifice of the receiving blind hole is on a bottom side end face of the base, a vertical rod is arranged in the receiving blind hole, the push piece is slidingly sleeved on the vertical rod, and a second elastic member is arranged between the receiving blind hole and the push piece, when the push piece is applied with a force towards one side of a bottom wall of the receiving blind hole, the stop member is retracted to be in the switch plate unlocking state, and when the push piece is not applied with a force towards one side of the bottom wall of the receiving blind hole, the stop member is extended to be in the switch plate locking state.

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

[0011] In some embodiments, an elastic convex ring extending towards a center line of the receiving blind hole is formed on an inner wall of the hole of the receiving blind hole, an outer diameter of the push piece is greater than an inner diameter of the elastic convex ring, and the push piece can be deformed into and limited on one side of the elastic convex ring close to the bottom wall of the receiving blind hole by interference between the push piece and the elastic convex ring; and / or, the second elastic member is sleeved on the vertical rod.

[0012] The utility model also provides a kind of cleaning device, including the above-mentioned pollution collection and discharge tank;And / or, the cleaning device is one of scrubber, sweeper robot, dust collector.

[0013] In some embodiments, the cleaning device further comprises a machine body for assembling the sewage collecting tank, when the switch plate locking structure further comprises a push piece, the bottom base is further formed with a receiving blind hole and the push piece is sleeved on the vertical rod in the receiving blind hole, the machine body is formed with a top post extending towards the bottom wall of the receiving blind hole on the surface matched with the bottom base, and when the sewage collecting tank is assembled on the machine body, the top post is inserted into the receiving blind hole and exerts force on the bottom surface of the push piece.

[0014] The sewage collecting tank and the cleaning device have the following beneficial effects.

[0015] The switch plate locking structure is arranged on the bottom base, the switch plate locking state and the switch plate unlocking state of the stopper are switched, when the sewage collecting tank is separately detached from the installation carrier, the stopper is switched to the switch plate locking state so that the limiting switch plate is reliably positioned at the sealing cover limiting position, and the position of the limiting switch plate is locked, and the phenomenon that the pollution outlet is opened due to the push plate of the limiting switch plate protruding outside the bottom base is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and for those skilled in the art, other embodiments can be derived from the provided drawings without creative labor.

[0017] Figure 1 is a three-dimensional structural schematic diagram of the sewage collecting tank in the embodiment of the present application;

[0018] Figure 2 is Figure 1 a three-dimensional structural schematic diagram (top view) of the bottom base in

[0019] Figure 3 is Figure 2 an explosion view of the switch plate locking structure in

[0020] Figure 4 is an assembly schematic diagram of the switch plate locking structure and the bottom base in the embodiment of the present application, and the arrow in the diagram shows the assembly direction;

[0021] Figure 5 is Figure 1 a three-dimensional structural schematic diagram (bottom view) of the bottom base in

[0022] Figure 6The movement trend direction of each component in the switch plate locking structure in the embodiment of the utility model is shown when the bottom surface of the push piece is forced upward or the push plate of the limiting switch plate is applied with force 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 utility model is shown when the bottom surface of the push piece is forced upward or the push plate of the limiting switch plate is applied with force in the opening direction;

[0024] Figure 8 It is a perspective structural schematic view (partially sectioned) of the cleaning device (floor cleaning machine) of another embodiment of the utility model;

[0025] Figure 9 It is Figure 8 The local enlarged view of A in the embodiment of the utility model.

[0026] The reference signs are:

[0027] 1, box body; 11, base; 111, slide; 112, accommodating blind hole; 113, vertical rod; 114, elastic convex ring; 12, blowdown through hole; 13, suction through hole; 2, sealing cover; 21, rotating shaft; 3, limiting switch plate; 31, push plate; 32, first elastic member; 4, switch plate locking structure; 41, stop piece; 411, convex strip; 42, push piece; 43, connecting rod; 44, second elastic member; 51, sliding block; 52, crank; 100, machine body; 101, top column. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] In the description of the utility model, it is understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, in the case where no opposite description is made, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the protection scope of the utility model; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0030] For the purposes of this description, spatially relative terms such as "above", "below", "up", "down", "between", "within", "left", "right", "front", "back", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom" and the like, can be used herein for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc. can be used herein to describe various components, features or steps in the embodiments. These components, features or steps should not be limited, and the above terms are only used to distinguish one component or step from another in the context of the description. Unless otherwise stated, the above terms should not be interpreted as having a special meaning or significance to the scope of the present application.

[0031] In addition, it should be noted that the use of "first", "second", and the like words to qualify components is merely for the convenience of distinguishing the corresponding components, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of the present application.

[0032] Referring to Figure 1 and Figure 9 According to the embodiment of the present application, a sewage collecting and discharging tank is provided, which comprises a tank body 1 and a base 11 at the bottom of the tank body 1. A sewage discharging port and a sewage suction port are formed on the bottom wall of the tank body 1. A sewage discharging through port 12 corresponding to the position of the sewage discharging 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 piece) are connected to the base 11. The sealing cover 2 has a sealing state for sealing the sewage discharging through port 12 and a sewage discharging state for opening the sewage discharging through port 12. It can be understood that the sealing cover 2 seals the sewage discharging through port, i.e. seals the sewage discharging port on the tank body 1. For details, see Figure 2As shown, the slider 51 is also connected to the base 11, and is slidingly connected between the base 11 and the slider 51. The slider 51 is drivingly connected to the rotating shaft 21 of the sealing cover 2 through the crank 52, so that the sealing cover 2 can be switched from the aforementioned sewage state to the sealing state under the pushing of the corresponding external driving mechanism (for example, the push rod motor on the machine body of the scrubber). In another embodiment, the aforementioned slider 51 is clamped between the corresponding vertical wall of the base 11 and the elastic reset member, for example, a spring, which exerts a force on one side of the slider 51 to switch the sealing cover 2 from the sealing state to the sewage state by the elastic force when the slider 51 is not subjected to the aforementioned external driving mechanism. The limit switch plate 3 has a sealing cover limit position in contact with the sealing cover 2 to limit the sealing cover 2 in the sealing state, and a release position out of contact with the sealing cover 2 to allow the sealing cover 2 to be switched from the sealing state to the sewage state. The limit switch plate 3 has a push plate 31 extending outside the base 11. It can be understood that the limit switch plate 3 also has a biting structure (for example, a protruding hook, not shown in the figure) between the sealing cover 2, so as to exert a force on the sealing cover 2 when the slider 51 is not subjected to the force, preventing the sealing cover 2 from being in the sewage state under the action of the aforementioned elastic reset member. That is, the design purpose of the aforementioned limit switch plate 3 of the utility model is to reliably lock the sealing cover 2 in the sealing state. The base 11 is also provided with a switch plate locking structure 4. The switch plate locking structure 4 includes a stop piece 41. The stop piece 41 has a switch plate locking state connected to the limit switch plate 3 to make the limit switch plate 3 in the sealing cover limit position, and a switch plate unlocking state disconnected from the limit switch plate 3 to unlock the limit switch plate 3.

[0033] In the technical solution, the switch plate locking structure 4 is provided on the base 11, and the stop piece 41 has a switch plate locking state and a switch plate unlocking state. When the sewage tank is separately removed from the installation carrier (for example, the machine body 100 described later), the stop piece 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 is locked, effectively preventing the phenomenon of pollution caused by the opening of the sewage outlet due to the user accidentally touching the push plate 31 protruding outside the base 11 of the limit switch plate 3.

[0034] In some embodiments, one end of the limit switch plate 3 is rotationally connected to the base 11 via a first pivot shaft (not shown in the figure), and a first elastic member 32, such as a spring, is clamped between the limit switch plate 3 and the base 11, and the first elastic member 32 can apply a force to the side wall of the limit switch plate 3 away from the sealing cover 2 to enable the limit switch plate 3 to switch from the release position to the sealing cover limiting position in a swinging manner around the first pivot shaft.

[0035] In the 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 limiting position without other external force, i.e., the normal position of the sealing cover 2 is the sealing cover limiting position. Thus, after the blowdown is completed, only the external driving component is needed to drive the slider 51 to move a distance in the direction of closing the sealing cover 2, and then the sealing cover 2 can be buckled with the limit switch plate 3 to enable the sealing cover 2 to be stably in the sealed state, which is simple and convenient to operate.

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

[0037] In the technical solution, the push plate 31 is formed on the side of the first elastic member 32 away from the first pivot shaft, i.e., the distance between the push plate 31 and the first pivot shaft is greater than the distance between the first elastic member 32 and the first pivot shaft, so that it is more labor-saving to switch the limit switch plate 3 from the sealing cover limiting position to the release position by pushing the push plate 31, energy loss can be saved, and the selection cost can be reduced (for example, a low-power driving motor with a lower price can be selected).

[0038] In some embodiments, the base 11 is formed with a slide 111, and the stop member 41 is slidingly connected in the slide 111 and switches between the switch plate locking state and the switch plate unlocking state in an extendable and retractable manner.

[0039] In the technical solution, the stop member 41 is slidingly connected in the slide 111 on the base 11, and the stop member 41 can slide in an extendable and retractable manner to switch between the switch plate locking state and the switch plate unlocking state, the state switching of the stop member 41 is stable, and the structure can be designed to be relatively compact.

[0040] For details, please refer to Figure 3As shown, in some embodiments, 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, the first end of the connecting rod 43 is rotationally connected with the stop piece 41, and the second end of the connecting rod 43 is rotationally connected with the push piece 42, the push piece 42 can be driven to move linearly in a preset direction to drive the stop piece 41 to extend and retract through the swing of the connecting rod 43, and the aforementioned rotational connection can be achieved by means of a corresponding rotating pin.

[0041] In this technical solution, the push piece 42, the connecting rod 43, and the stop piece 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 piece 41, and the extension and retraction of the stop piece 41 are switched to change its state, and the structure is simple and compact.

[0042] In some embodiments, a containing blind hole 112 is further formed on the base 11, the aperture of the containing blind hole 112 is on the bottom side end face of the base 11, a vertical rod 113 is arranged in the containing blind hole 112, the push piece 42 is slidingly sleeved on the vertical rod 113, and a second elastic member 44 is arranged between the containing blind hole 112 and the push piece 42, when the push piece 42 is applied with a force towards the bottom wall side of the containing blind hole 112, the stop piece 41 is retracted to be in the switch plate unlocking state, and when the push piece 42 is not applied with a force towards the bottom wall side of the containing blind hole 112, the stop piece 41 is extended to be in the switch plate locking state.

[0043] Specifically referring to Figure 6 As shown, when a pushing force is applied upward on the bottom surface of the push piece 42, the push piece 42 will move upward against the elastic force of the second elastic member 44, which will drive the rotationally connected connecting rod 43 to move rightward and upward, and the connecting rod 43 further drives the stop piece 41 to slide rightward, so as to be out of contact with the push plate 31, at this time, when a pushing force is applied to the push plate 31 as shown by the arrow in Figure 6 The limiting switch plate 3 will swing outward against the first elastic member 32 abutting thereto to release the limitation of the sealing cover 2, and the sealing cover 2 will finally be opened under the linkage of the aforementioned elastic return member, sliding block 51, and crank 52, that is, in the blowdown state.

[0044] Continuously referring to Figure 7As shown, when no upward pushing force is applied on the bottom side end face of the pushing piece 42, the pushing piece 42 is in the bottom end position under the elastic force of the second elastic member 44, the force directions of the three parts of the aforementioned stop piece 41, the connecting rod 43 and the pushing piece 42 are in the same straight line and the three parts are in the same straight line, thus, when an opening force is applied on the pushing plate 31, the force directions of the three parts of the aforementioned stop piece 41, the connecting rod 43 and the pushing piece 42 are in the same straight line and the three parts form the force offset in the horizontal direction, the parts do not produce horizontal movement, thus the position of the pushing plate 31 is kept unchanged, and the purpose of preventing accidental touch is achieved.

[0045] Specifically referring to Figure 3 As shown, in some embodiments, the side of the stop piece 41 in contact with the limit switch plate 3 is provided with a convex strip 411 along the extension direction thereof.

[0046] In the technical scheme, the convex strip 411 with relatively small size arranged on the side of the stop piece 41 facing the limit switch plate 3 can reduce the contact area between the stop piece 41 and the limit switch plate 3, and further reduce the friction therebetween, so as to ensure that the state switching of the stop piece 41 is smoother. Thus, the cross section of the stop piece 41 in the utility model is in the shape of a convex character, and the whole forms a long strip structure, which can further improve the compactness of the structure.

[0047] Specifically referring to Figure 6 As shown, in some embodiments, the hole inner wall of the accommodating blind hole 112 is formed with an elastic convex ring 114 extending towards the center line thereof, the outer diameter of the pushing piece 42 is greater than the inner ring diameter of the elastic convex ring 114, and the pushing piece 42 can enter and be limited on the side of the elastic convex ring 114 close to the hole bottom wall of the accommodating blind hole 112 by virtue of the interference deformation between the pushing piece 42 and the elastic convex ring 114. It should be noted that the aforementioned accommodating blind hole 112 can be integrally formed on the base 11 or assembled on the aforementioned base 11 as an independent part, and the forming mode thereof is not particularly limited in the utility model, and the aforementioned elastic convex ring 114 can meet the deformation requirement of interference fit in principle.

[0048] In the technical scheme, the pushing piece 42 can be installed in and prevented from falling off from the accommodating blind hole 112 by virtue of the interference deformation between the pushing piece 42 and the elastic convex ring 114 close to the hole bottom wall of the accommodating blind hole 112, and the structure is simple. Specifically as Figure 5 As shown, the aforementioned pushing piece 42 can be 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 uniformly exerts force on the push piece 42 and stably deforms.

[0050] According to the embodiments of the utility model, a cleaning device is also provided, the cleaning device is one of a scrubber, a sweeping robot and a dust collector, and the cleaning device comprises the above-mentioned dirt collecting and discharging tank.

[0051] Specifically referring to Figure 8 and Figure 9 As shown in Figs. 1-3, in some embodiments, the cleaning device further comprises a machine body 100 for assembling the dirt collecting and discharging tank, when the switch plate locking structure 4 further comprises a push piece 42, the base 11 is further provided with a receiving blind hole 112, and the push piece 42 is sleeved on a vertical rod 113 of the receiving blind hole 112, the machine body 100 is provided with a top column 101 extending towards the bottom wall of the receiving blind hole 112 on the surface matched with the base 11, when the dirt collecting and discharging tank is assembled on the machine body 100, the top column 101 is inserted into the receiving blind hole 112 and exerts force on the bottom surface of the push piece 42, in a preferred embodiment, the top column 101 is a sleeve, 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 the uniform force exerted by the top column 101 on the bottom side end face of the push piece 42.

[0052] In the technical scheme, the top column 101 is arranged on the machine body 100 to automatically switch the stop piece 41 to the switch plate unlocking state when the dirt collecting and discharging tank is assembled on the machine body 100 and to automatically switch the stop piece 41 to the switch plate locking state when the dirt collecting and discharging tank is detached from the machine body 100, which realizes the prevention of pollution caused by accidental touch of the user, has a simple structure, does not need to be controlled and has low manufacturing cost.

[0053] When the dirt collecting and discharging box is assembled on the machine body 100, the top column 101 on the machine body 100 will extend into the containing blind hole 112 and exert a force on the bottom side end face of the push piece 42 to make the push piece 42 move upward against the elastic force of the second elastic member 44, and then make the stop member 41 disengage from the push plate 31, that is, the position locking of the limit switch plate 3 is released, and the operation of the push rod motor on the machine body 100 can freely control the switching of the position of the limit switch plate 3, and when the dirt collecting and discharging box is detached from the machine body 100, the top column 101 no longer exerts an upward pushing force on the push piece 42, 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 the low position and be in the same straight line with the stop member 41 and the connecting rod 43, and a horizontal force provided by the user or the automatic sewage outlet switch to the stop member 41 cannot be decomposed into upward or downward force of the push piece 42, so that the locking function of the sewage outlet can be realized (only when an upward or downward force is provided to the push piece 42, and then a upward or downward pulling force is formed on the connecting rod 43, the left and right movement of the stop member 41 can be realized).

[0054] Those skilled in the art can easily understand that the advantageous technical features of each mode described above can be freely combined and superimposed without conflict.

[0055] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sewage collecting and discharging tank, comprising a tank body (1) and a base (11) at the bottom of the tank body (1), a sewage discharging opening is formed on the bottom wall of the tank body (1), a sewage discharging through opening (12) corresponding to the position of the sewage discharging opening is formed on the base (11), a sealing cover (2) and a limit switch plate (3) are connected to the base (11), the sealing cover (2) has a sealing state of sealing the sewage discharging through opening (12) and a sewage discharging state of conducting the sewage discharging through opening (12), the limit switch plate (3) has a sealing cover limit position of contacting the sealing cover (2) to limit the sealing cover (2) in the sealing state and a release position of being separated from the sealing cover (2) to allow the sealing cover (2) to switch from the sealing state to the sewage discharging state, the limit switch plate (3) has a push plate (31) extending outside the base (11), characterized in that, The base (11) is further provided with a switch plate locking structure (4), the switch plate locking structure (4) comprises a stop piece (41), the stop piece (41) has a switch plate locking state of being connected with the limit switch plate (3) to make the limit switch plate (3) in the sealing cover limiting position and a switch plate unlocking state of being disconnected with the limit switch plate (3) to make the limit switch plate (3) be unlocked.

2. The trap and drain box of claim 1, wherein, One end of the limit switch plate (3) is rotatably connected with the base (11) through a first pivot shaft, 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 a force to the side wall of the limit switch plate (3) away from the sealing cover (2) to make the limit switch plate (3) switch from the release position to the sealing cover limiting position in a swing manner around the first pivot shaft.

3. The catch basin of claim 2, wherein, The push plate (31) is formed on the side of the first elastic member (32) away from the first pivot shaft.

4. The catch basin of claim 2, wherein, The base (11) is further provided with a slide (111), the stop piece (41) is slidably connected in the slide (111) and can be switched between the switch plate locking state and the switch plate unlocking state in an extension and retraction manner.

5. The trap and drain box of claim 4, wherein, 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), the first end of the connecting rod (43) is rotatably connected with the stop piece (41), the second end of the connecting rod (43) is rotatably connected with the push piece (42), and the push piece (42) can be driven to move linearly in a reciprocating manner in a preset direction to drive the stop piece (41) to extend and retract through the swing of the connecting rod (43).

6. The catch basin of claim 5, wherein, The base (11) is further provided with a receiving blind hole (112), the aperture of the receiving blind hole (112) is on the bottom side end face of the base (11), the receiving blind hole (112) has a vertical rod (113) therein, the push piece (42) is slidably sleeved on the vertical rod (113), and a second elastic member (44) is arranged between the receiving blind hole (112) and the push piece (42), when the push piece (42) is applied with a force towards the bottom wall side of the receiving blind hole (112), the stop piece (41) is retracted to be in the switch plate unlocking state, and when the push piece (42) is not applied with a force towards the bottom wall side of the receiving blind hole (112), the stop piece (41) is extended to be in the switch plate locking state.

7. The trap and drain box of claim 6, wherein, The side surface of the stop piece (41) in contact with the limit switch plate (3) is provided with a convex strip (411) extending in the extension and retraction direction thereof.

8. The catch basin of claim 6, wherein, The inner wall of the accommodating blind hole (112) is formed with an elastic convex ring (114) extending towards the center line thereof, the outer diameter of the push piece (42) is greater than the inner ring diameter of the elastic convex ring (114), and the push piece (42) can deform into and be limited in the elastic convex ring (114) on the side close to the hole bottom wall of the accommodating blind hole (112) by interference between the push piece (42) 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 The cleaning device is one of a scrubber, a sweeping robot, and a dust collector.

10. The cleaning device of claim 9, wherein, Further comprising a machine body (100) for assembling the dirt collecting and discharging box, when the switch plate locking structure (4) further comprises a push piece (42), the bottom seat (11) is further formed with an accommodating blind hole (112), and the push piece (42) is sleeved on the vertical rod (113) in the accommodating blind hole (112), the surface of the machine body (100) matched with the bottom seat (11) is formed with a top column (101) extending towards the hole bottom wall of the accommodating blind hole (112), and when the dirt collecting and discharging box is assembled on the machine 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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