CN219166324U - Sewage tank and floor washing machine - Google Patents

Abstract

The utility model belongs to the technical field of floor washing machines, and provides a sewage tank and floor washing machine, the sewage tank includes box and prevents the structure of overturning, prevents that the structure of overturning includes apron, clamp plate and elastic component, and the box includes shell and baffle, and the shell has the inner chamber, and the baffle separates the inner chamber into filtration wind channel and sewage collection chamber, is equipped with the air inlet that communicates filtration wind channel and sewage collection chamber on the baffle, and the apron movable cover is located one side that the air inlet is close to filtration wind channel; the pressing plate is connected to the inner wall of the filtering air duct; the elastic component is abutted between the cover plate and the pressing plate. When negative pressure exists in the filtering air duct, the cover plate can open the air inlet under the negative pressure effect of the filtering air duct, so that the floor washing machine can work normally; when the filter air duct is not provided with negative pressure, the cover plate can seal the air inlet under the action of restoring force provided by the elastic component, so that the filter module is prevented from being damaged due to the fact that sewage in the sewage collecting cavity enters the filter air duct when the sewage tank is moved or the floor scrubber is integrally moved.

Description

Sewage tank and floor washing machine

Technical Field

The application relates to the technical field of floor washers, in particular to a sewage tank and a floor washer.

Background

The floor scrubber is usually provided with a sewage tank, a fan and a cleaning module, the sewage tank usually comprises a filtering air duct and a sewage collecting cavity, an air outlet of the filtering air duct is communicated with an air inlet end of the fan, an air inlet of the filtering air duct is communicated with the sewage collecting cavity, the sewage collecting cavity is provided with a sewage suction port located at the side of the cleaning module, the floor cleaning module (such as a rolling brush) rotates to clean the floor during operation of the floor scrubber, the fan continuously sucks and generates air flow at the air outlet of the filtering air duct, dirt thrown out by the air flow can be carried by the rolling brush to sequentially enter the sewage collecting cavity and the filtering air duct through the sewage suction port of the sewage collecting cavity, the sewage collecting cavity can collect sewage and particles in the air flow, and the filtering air duct can further collect particles and sewage which are small in volume and cannot be deposited in the sewage collecting cavity in the air flow, so that the floor cleaning purpose is achieved.

By adopting the structure, when the floor washing machine does not work, if the floor washing machine is wholly moved by a user, or the sewage tank is singly lifted by the user from the floor washing machine, sewage in the sewage collecting cavity easily enters the filtering air duct through the air inlet of the filtering air duct, so that the filtering module in the filtering air duct is damaged.

Disclosure of Invention

An object of the embodiment of the application is to provide a sewage tank and washing machine to solve the whole quilt user that is removed of washing machine that exists among the prior art, perhaps the sewage tank is taken up alone from washing machine by the user, and the sewage in the sewage collection chamber is easy in the air inlet entering filtration wind channel through filtration wind channel, causes the technical problem of the filtration module damage in the filtration wind channel.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: there is provided a sewage tank including:

the box body comprises a shell and a baffle plate, wherein the shell is provided with an inner cavity, the baffle plate is arranged in the inner cavity and divides the inner cavity into a filtering air duct and a sewage collecting cavity, and an air inlet used for communicating the filtering air duct and the sewage collecting cavity is formed in the baffle plate;

the anti-overturning structure comprises a cover plate, a pressing plate and an elastic assembly, wherein the cover plate is movably covered on one side of the air inlet, which is close to the filtering air duct; the pressing plate is connected to the inner wall of the filtering air duct; the elastic component is abutted between the cover plate and the pressing plate; the cover plate is in an opening state of opening the air inlet under the action of negative pressure in the filtering air duct when negative pressure exists in the filtering air duct, and is in a closing state of closing the air inlet under the action of restoring force provided by the elastic component when negative pressure does not exist in the filtering air duct.

In one embodiment, the cover plate is switched in an inverted fashion between the open and closed states.

In one embodiment, a groove is formed in a surface, close to the elastic component, of the cover plate, and the groove wall of the groove is used for abutting against the elastic component.

In one embodiment, the elastic component comprises a spring and a push rod, and the pressing plate, the spring, the push rod and the cover plate are sequentially abutted.

In one embodiment, the surface of the pressing plate, which is close to the cover plate, is convexly provided with a guide rod and a cylinder body, the cylinder body surrounds the guide rod, the spring is positioned in the cylinder body and sleeved on the guide rod, and the push rod is slidably embedded in the cylinder body.

In one embodiment, the push rod has an arcuate surface near one end of the cover plate, the arcuate surface being for abutting the cover plate.

In one embodiment, the anti-overturning structure further comprises a sealing element, wherein the sealing element is arranged on the surface, close to the air inlet, of the cover plate, or is arranged on the surface, facing the filtering air duct, of the partition plate and surrounds the air inlet, and the sealing element is used for sealing a gap between the cover plate and the partition plate when the cover plate is in a closed state.

In one embodiment, the surface of the baffle facing the sewage collection chamber is provided with a baffle surrounding the air inlet.

In one embodiment, the housing comprises a detachably connected box body and a box cover, the box body and the box cover surround to form the inner cavity, and the partition plate is connected to the surface of the box cover facing the inner cavity and surrounds with the box cover to form the filtering air duct.

In order to achieve the above purpose, the application still provides a floor cleaning machine, the floor cleaning machine includes floor cleaning machine main part, filtration module, fan, cleaning module and above-mentioned sewage case, sewage case detachably locates the floor cleaning machine main part, the box still have with the gas outlet of filtration wind channel intercommunication and with the dirt absorbing mouth of sewage collection chamber intercommunication, filtration module locates in the filtration wind channel, the fan with cleaning module locates respectively the floor cleaning machine main part, the air inlet end of fan with the gas outlet intercommunication, cleaning module is located the side of dirt absorbing mouth.

The sewage case that this application provided and washing ground machine's beneficial effect lies in: compared with the prior art, when the floor scrubber is placed on the ground to work normally, the fan continuously pumps at the air outlet of the filtering air duct, so that negative pressure is generated in the filtering air duct and the sewage collecting cavity, the cover plate can open the air inlet of the filtering air duct under the action of the negative pressure, sewage and particles thrown out by the cleaning module enter the sewage collecting cavity along with the air flow through the sewage suction port of the sewage collecting cavity, most of sewage and particles are deposited in the sewage collecting cavity, trace sewage and particles enter the filtering air duct along with the air flow through the air inlet of the filtering air duct, and can be filtered and absorbed by the filtering element in the filtering air duct, so that normal cleaning operation can be realized; when the floor washing machine stops working, the fan does not generate negative pressure in the filtering air duct, the cover plate can seal the air inlet of the filtering air duct under the action of restoring force provided by the elastic component, so that when the floor washing machine is wholly lifted or moved, or the sewage tank is lifted from the floor washing machine, the sewage collecting cavity in the sewage tank and the filtering air duct can always keep a mutually isolated state, sewage in the sewage collecting cavity cannot enter the filtering air duct through the air inlet of the filtering air duct, and the sewage can be prevented from damaging the filtering module in the filtering air duct.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a floor scrubber according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a sewage tank according to an embodiment of the present application, which is a schematic view of the structure, in which the anti-overturning structure is exposed to external negative pressure, and a flow path of gas in the sewage tank;

fig. 3 is a schematic sectional view of a sewage tank according to an embodiment of the present application, showing a state in which the anti-overturning structure is not subjected to an external negative pressure;

FIG. 4 is an enlarged view of a portion of the sewage tank of FIG. 2, shown in a partially broken away schematic view, illustrating the anti-toppling structure in a state in which it is subjected to an external negative pressure;

fig. 5 is a partially enlarged view of a second schematic sectional view of the sewage tank shown in fig. 3, showing a state in which the anti-overturning structure is not subjected to an external negative pressure.

Fig. 6 is a schematic diagram of an explosion structure of a sewage tank according to an embodiment of the present application;

fig. 7 is a schematic diagram of an explosion structure of a sewage tank according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1-a floor washer; 10-a sewage tank; 100-box body; 110-a housing; 111-lumen; 1111-a filter air duct; 1112-a sewage collection chamber; 1101-case body; 1102-a cover; 11021-a first cover; 11022-a second cover; 11023-a disassembly and assembly opening; 120-separator; 121-an air inlet; 122-baffle; 123-flanges; 124-mounting wall; 130-an air outlet; 140-a dirt suction port; 200-an anti-toppling structure; 210-cover plate; 211-grooves; 220-pressing plate; 221-a guide rod; 222-a cylinder; 230-an elastic component; 231-springs; 232-pushing rod; 2321-an arcuate surface; 240-seals; 250-filtering net; 20-a floor scrubber body; 30-a filtration module; 40-cleaning module.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a sewage tank 10 and a floor scrubber 1 according to an embodiment of the present application will be described. The floor washing machine 1 includes a sump 10, a floor washing machine body 20, a filter module 30, a blower (not shown), and a cleaning module 40.

Referring to fig. 2 and 3, the sewage tank 10 includes a tank body 100 and an anti-overturning structure 200, the tank body 100 includes a housing 110 and a partition board 120, the housing 110 has an inner cavity 111, the partition board 120 is disposed in the inner cavity 111 and divides the inner cavity 111 into a filtering air duct 1111 and a sewage collecting cavity 1112, an air inlet 121 for communicating the filtering air duct 1111 and the sewage collecting cavity 1112 is disposed on the partition board 120, and the tank body 100 further has an air outlet 130 communicating with the filtering air duct 1111 and a sewage suction port 140 communicating with the sewage collecting cavity 1112. The anti-overturning structure 200 comprises a cover plate 210, a pressing plate 220 and an elastic assembly 230, wherein the cover plate 210 is movably covered on one side of the air inlet 121, which is close to the filtering air duct 1111; the pressing plate 220 is connected to the inner wall of the filtering air duct 1111; the elastic component 230 is abutted between the cover plate 210 and the pressing plate 220; when there is a negative pressure in the filter duct 1111, the cover 210 has an opened state (see fig. 2 and 4) in which the air inlet 121 is opened by the negative pressure in the filter duct 1111, and when there is no negative pressure in the filter duct 1111, the cover 210 has a closed state (see fig. 3 and 5) in which the air inlet 121 is closed by the restoring force provided by the elastic member 230.

In an alternative embodiment, when the blower is started, a negative pressure is formed in the filtering duct 1111 through the air outlet 130, and a pressure difference is formed with the sewage collecting chamber 1112, so that the cover 210 overcomes the elastic force of the elastic assembly 230, and the air inlet 121 is opened.

In an alternative embodiment, when the blower is turned off, the filtered air duct 1111 maintains a consistent pressure with the waste water collection chamber 1112 such that the cover plate 210 closes its air inlet 121 under the elastic restoring force of the elastic assembly 230.

Referring to fig. 2, the filter module 30 is disposed in the filter air duct 1111, the fan is disposed at the air outlet 130 of the filter air duct 1111 of the sewage tank 10, the air inlet end of the fan is communicated with the air outlet 130 of the filter air duct 1111, the fan can generate negative pressure in the sewage collecting chamber 1112 of the filter air duct 1111 when in operation, the arrow in fig. 2 shows the flowing direction of the air in the sewage tank 10 when the fan is in operation, the cleaning module 40 is disposed at the side of the sewage suction port 140 of the sewage collecting chamber 1112, the cleaning module 40 can throw out the sewage and the particulate matters on the ground, and the sewage and the particulate matters are sucked into the sewage collecting chamber 1112 through the sewage suction port 140.

Compared with the prior art, when the floor scrubber 1 is placed on the ground to work normally, the fan continuously pumps at the air outlet 130 of the filtering air duct 1111, so that negative pressure is generated in the filtering air duct 1111 and the sewage collecting cavity 1112, the cover plate 210 can open the air inlet 121 of the filtering air duct 1111 under the action of the negative pressure, sewage and particles thrown out by the cleaning module 40 enter the sewage collecting cavity 1112 along with the air flow through the sewage suction port 140, most of sewage and particles are deposited in the sewage collecting cavity 1112, trace sewage and particles enter the filtering air duct 1111 along with the air flow through the air inlet 121 of the filtering air duct 1111 and are filtered and absorbed by the filtering module 30 in the filtering air duct, and normal cleaning operation can be realized; when the floor scrubber 1 stops working, the fan no longer generates negative pressure in the filtering air duct 1111, and the cover plate 210 can close the air inlet 121 of the filtering air duct 1111 under the restoring force provided by the elastic component 230, so that when the floor scrubber 1 is lifted or moved as a whole, or the sewage tank 10 is lifted up from the floor scrubber 1, the sewage collecting cavity 1112 and the filtering air duct 1111 in the sewage tank 10 can always keep a mutually isolated state, and sewage in the sewage collecting cavity 1112 cannot enter the filtering air duct 1111 through the air inlet 121 of the filtering air duct 1111, so that the sewage can be prevented from damaging the filtering module 30 in the filtering air duct 1111.

In another embodiment of the present application, referring to fig. 4 and 5, the cover 210 is switched between an open state and a closed state in a flipped form.

Specifically, one end of the cover plate 210 may be hinged to the partition 120, and the other end of the cover plate 210 abuts against the elastic member 230; the cover 210 may also have one end hinged to the pressing plate 220 and the other end abutting against the elastic member 230, and may be set as required, which is not limited only herein.

The sewage tank 10 provided in this embodiment, in which the cover plate 210 is designed to switch between the open state and the closed state in a turnover manner, can prevent the cover plate 210 from blocking the air flow entering through the air inlet 121 as much as possible in the open state, so as to avoid affecting the absorption effect of the filtration module 30 in the filtration air duct 1111 on sewage or particulate matters as much as possible, and has a simple structure and small occupied space.

In another embodiment of the present application, referring to fig. 4 and 5, a groove 211 is formed on a surface of the cover plate 210, which is close to the elastic component 230, and a groove wall of the groove 211 is used for abutting against the elastic component 230, so that the elastic component 230 is beneficial to stably abutting against the cover plate 210, and slipping between the elastic component 230 and the cover plate 210 is avoided as much as possible.

In another embodiment of the present application, referring to fig. 4 and 5, the anti-overturning structure 200 further includes a sealing member 240, the sealing member 240 may be disposed on a surface of the cover plate 210 near the air inlet 121, the sealing member 240 may be disposed on a surface of the partition plate 120 facing the filtering duct 1111 and surrounding the air inlet 121, the sealing member 240 is sandwiched between the cover plate 210 and the partition plate 120 when the cover plate 210 is in a closed state, and the sealing member 240 is capable of sealing a gap between the cover plate 210 and the partition plate 120.

Specifically, the sealing member 240 may be a silica gel sealing ring or a rubber sealing ring, etc., and may be set as required, and the sealing member 240 may be set on the surface of the cover plate 210 close to the air inlet 121 or the surface of the partition plate 120 facing the filtering duct 1111 by gluing or clamping.

In the sewage tank 10 provided in this embodiment, the sealing member 240 can seal the gap between the cover plate 210 and the partition plate 120, so as to ensure that sewage in the sewage collecting chamber 1112 does not enter the filtering duct 1111 through the air inlet 121 to the maximum extent.

In another embodiment of the present application, referring to fig. 4 and 5, the elastic assembly 230 includes a spring 231 and a push rod 232, and the pressing plate 220, the spring 231, the push rod 232 and the cover 210 are sequentially abutted.

Specifically, the two ends of the spring 231 may be fixedly connected or abutted with the pressing plate 220 and the push rod 232, respectively, and when the pressing plate 220 is provided with a guide rod 221 and a cylinder 222 for guiding the spring 231 and the push rod 232, which will be described later, the two ends of the spring 231 may be abutted with the pressing plate 220 and the push rod 232, respectively, without being fixedly connected.

The sewage tank 10 provided in this embodiment adopts the combination of the spring 231 and the push rod 232 as the elastic component 230, and since the spring 231 has better elastic deformation capability, the push rod 232 has better strength and rigidity, can be abutted against the cover plate 210 along a determined path, and can ensure that the elastic component 230 provides a restoring force with a proper size for the cover plate 210, and ensure that the elastic component 230 stably and reliably abuts against the cover plate 210.

In another embodiment of the present application, referring to fig. 4 and 5, the surface of the pressing plate 220, which is close to the cover plate 210, is convexly provided with a guide rod 221 and a cylinder 222, the cylinder 222 surrounds the guide rod 221, the spring 231 is located in the cylinder 222 and sleeved on the guide rod 221, and the push rod 232 is slidably embedded in the cylinder 222 or sleeved outside the cylinder 222.

In the sewage tank 10 provided in this embodiment, the guide rod 221 can guide and position the spring 231, and the cylinder 222 can guide and position the spring 231 and the push rod 232 at the same time, so that the elastic component 230 is beneficial to stably pushing the cover plate 210, and the situation that the cover plate 210 is excessively opened or the cover plate 210 is not tightly covered due to the reasons of torsion, shaking and the like of the spring 231 is avoided.

In another embodiment of the present application, referring to fig. 5, the end of the push rod 232 near the cover plate 210 has an arc-shaped surface 2321, where the arc-shaped surface 2321 is used to abut the cover plate 210.

Optionally, the end of the push rod 232 near the cover plate 210 has a hemispherical surface.

In the sewage tank 10 provided in this embodiment, the surface of the push rod 232 for abutting against the cover plate 210 is an arc-shaped surface 2321, which can avoid noise generated by scraping friction between the push rod 232 and the cover plate 210 as much as possible, and is also beneficial to the push rod 232 to smoothly push against the cover plate 210 without jamming.

In another embodiment of the present application, referring to fig. 4 and 5, a baffle 122 surrounding the air inlet 121 is provided on a surface of the partition 120 facing the sewage collection chamber 1112.

In the sewage tank 10 provided in this embodiment, the baffle 122 can prevent sewage droplets with smaller particle sizes in the sewage collection chamber 1112 from entering the filtering air duct 1111, so that sewage is deposited in the sewage collection chamber 1112 as much as possible, the number of sewage droplets entering the filtering air duct 1111 is reduced, the load of the filtering module 30 in the filtering air duct 1111 is reduced, and the filtering module 30 is ensured to effectively exert the adsorption effect for a long time.

In another embodiment of the present application, referring to fig. 4 and 5, a flange 123 surrounding the air inlet 121 is provided on a surface of the partition 120 facing the filter flue 1111, and when a sealing member 240 is provided on a surface of the cover 210 facing the air inlet 121, the flange 123 can abut against the sealing member 240 when the cover 210 covers the air inlet 121 of the filter flue 1111, and when the flange 123 contacts the sealing member 240, the flange 123 can cause a larger elastic deformation of the sealing member 240, so that the sealing member 240 can seal the air inlet 121 more tightly.

In another embodiment of the present application, referring to fig. 3, 6 and 7, housing 110 includes a detachably connected case body 1101 and a case cover 1102, the case body 1101 and the case cover 1102 are surrounded to form an inner cavity 111, and a partition 120 is connected to a surface of case cover 1102 facing inner cavity 111 and is surrounded to form a filter duct 1111 with case cover 1102.

In the sewage tank 10 provided in this embodiment, the tank cover 1102 is detached from the tank body 1101, and the partition board 120 is detached from the tank body 1101 together with the tank cover 1102, so that the sewage in the sewage collecting cavity 1112 can be cleaned directly, and the operation is convenient.

In alternative embodiments, partition 120 may be fixedly coupled to cover 1102.

Alternatively, referring to fig. 3, 6 and 7, the tank body 1101 is a frame structure with an open top, the tank cover 1102 includes a first cover 11021 and a second cover 11022, the first cover 11021 has a mounting opening 11023, an edge of the partition board 120 is connected to the mounting opening 11023 and is integrally formed with the first cover 11021, the partition board 120 is recessed downward relative to the first cover 11021, the integrally formed first cover 11021 and partition board 120 are detachably covered on the top of the tank body 1101, a space between the first cover 11021, the partition board 120 and the tank body 1101 forms a sewage collecting cavity 1112, the second cover 11022 is covered on the mounting opening 11023, that is, the second cover 11022 is covered above the partition board 120, and a space between the second cover 11022 and the partition board 120 forms a filtering air duct 1111. In this way, the second cover 11022 is detached from the box body 1101 alone, so that the filtration module 30 in the filtration duct 1111 can be detached and maintained; the first cover 11021 and the partition board 120 which are integrally formed are detached from the box body 1101, the second cover 11022 can be detached from the box body 1101 along with the first cover 11021 and the partition board 120 which are integrally formed, dirt in the sewage collecting cavity 1112 can be cleaned, and the operation is convenient.

Alternatively, referring to fig. 3, the partition 120 has a mounting wall 124 disposed obliquely with respect to the horizontal direction, the air inlet 121 is provided at the mounting wall 124, the air inlet 121 is provided with a filter screen 250, and the filter module 30 is disposed obliquely with respect to the horizontal direction in the filter duct 1111. The filter screen 250 and the filter module 30 are both obliquely arranged on the horizontal plane, so that the space of the filter air duct 1111 can be effectively utilized, and the sewage tank 10 is more compact in structure.

Referring to fig. 1 and 2, the present application further provides a floor scrubber 1, the floor scrubber 1 includes a sewage tank 10, a floor scrubber main body 20, a filter module 30, a fan and a cleaning module 40, the sewage tank 10 is detachably disposed on the floor scrubber main body 20, the tank 100 further has an air outlet 130 communicated with a filtering air duct 1111 and a sewage suction port 140 communicated with a sewage collection cavity 1112, the filter module 30 is disposed on the filtering air duct 1111, the fan and the cleaning module 40 are both disposed on the floor scrubber main body 20, an air inlet end of the fan is communicated with the air outlet 130 of the filtering air duct 1111, and the cleaning module 40 is disposed on a side of the sewage suction port 140 of the sewage collection cavity 1112.

In the floor cleaning machine 1 provided in this embodiment, during normal operation, the fan continuously sucks in the air outlet 130 of the filtering air duct 1111, so as to generate negative pressure in the filtering air duct 1111 and the sewage collecting cavity 1112 of the sewage tank 10, the cover plate 210 opens the air inlet 121 of the filtering air duct 1111 under the action of the negative pressure, sewage and particulate matters thrown out by the cleaning module 40 enter the sewage collecting cavity 1112 along with the air flow through the sewage suction port 140, most of the sewage and particulate matters are deposited in the sewage collecting cavity 1112, and trace sewage and particulate matters enter the filtering air duct 1111 along with the air flow through the air inlet 121 of the filtering air duct 1111 and are filtered and absorbed by the filtering module 30 in the filtering air duct, so that normal cleaning operation can be realized; when the floor scrubber 1 stops working, the fan no longer generates negative pressure in the filtering air duct 1111, the cover plate 210 can seal the air inlet 121 of the filtering air duct 1111 under the restoring force provided by the elastic component 230, so that when the floor scrubber 1 is lifted or moved wholly or the sewage tank 10 is lifted or moved from the floor scrubber 1, the sewage collecting cavity 1112 and the filtering air duct 1111 in the sewage tank 10 can always keep mutually isolated, sewage in the sewage collecting cavity 1112 cannot enter the filtering air duct 1111 through the air inlet 121 of the filtering air duct 1111, the sewage can be prevented from damaging the filtering module 30 in the filtering air duct 1111, and the sewage can be prevented from flowing backwards into the fan to damage the fan.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (10)

1. A sewage tank, characterized in that the sewage tank comprises:

the box body is provided with a shell and a baffle, the shell is provided with an inner cavity, the baffle is arranged in the inner cavity and divides the inner cavity into a filtering air duct and a sewage collecting cavity, and an air inlet used for communicating the filtering air duct and the sewage collecting cavity is arranged on the baffle;

the anti-overturning structure comprises a cover plate, a pressing plate and an elastic assembly, wherein the cover plate is movably covered on one side of the air inlet, which is close to the filtering air duct, and the pressing plate is connected to the inner wall of the filtering air duct; the elastic component is abutted between the cover plate and the pressing plate; the cover plate is in an opening state of opening the air inlet under the action of negative pressure in the filtering air duct when negative pressure exists in the filtering air duct, and is in a closing state of closing the air inlet under the action of restoring force provided by the elastic component when negative pressure does not exist in the filtering air duct.

2. A tank according to claim 1, wherein the cover plate is switched in an inverted fashion between the open and closed condition.

3. A tank according to claim 1, characterized in that the surface of the cover plate adjacent to the elastic assembly is provided with a groove, the walls of which are intended to abut against the elastic assembly.

4. The tank of claim 1, wherein the resilient assembly comprises a spring and a push rod, the pressure plate, the spring, the push rod and the cover plate abutting in sequence.

5. The sewage tank of claim 4, wherein the surface of the pressing plate, which is close to the cover plate, is provided with a guide rod and a cylinder body, the cylinder body surrounds the guide rod, the spring is positioned in the cylinder body and sleeved on the guide rod, and the push rod is slidably embedded in the cylinder body.

6. The tank of claim 4, wherein the pushrod has an arcuate surface proximate an end of the cover plate, the arcuate surface for abutting the cover plate.

7. The sewer tank of claim 1, wherein the anti-overturning structure further comprises a sealing member provided on a surface of the cover plate adjacent to the air inlet, or provided on a surface of the partition plate facing the filter tunnel and surrounding the air inlet, the sealing member being configured to seal a gap between the cover plate and the partition plate when the cover plate is in a closed state.

8. A tank according to claim 1, wherein the surface of the partition facing the sewage collection chamber is provided with a baffle surrounding the air inlet.

9. The sewer tank of claim 1, wherein the housing includes a detachably connected tank body and a tank cover, the tank body and the tank cover enclosing to form the interior cavity, and the partition is connected to a surface of the tank cover facing the interior cavity and enclosing with the tank cover to form the filter air duct.

10. The floor washing machine is characterized by comprising a floor washing machine body, a filtering module, a fan, a cleaning module and the sewage tank according to any one of claims 1-9, wherein the sewage tank is detachably arranged on the floor washing machine body, the tank is further provided with an air outlet communicated with the filtering air channel and a sewage suction port communicated with the sewage collecting cavity, the filtering module is arranged in the filtering air channel, the fan and the cleaning module are respectively arranged on the floor washing machine body, the air inlet end of the fan is communicated with the air outlet, and the cleaning module is positioned at the side of the sewage suction port.

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