Sewage tank structure of scrubber and scrubber
By designing a solid-liquid separation structure that can move up and down and changing the gas flow path, the problem of sewage overflowing or entering the fan in the sewage tank of the floor scrubber is solved, and the effective separation of sewage and prevention of overflow is achieved.
Patent Information
- Application Number
- CN202311114913.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-31
- Publication Date
- 2025-02-28
AI Technical Summary
When the existing floor scrubber sewage tank absorbs a large amount of sewage or is in a lying flat state, the sewage liquid surface churns violently, making it easy for sewage to overflow or enter the fan.
A sewage tank structure of a floor scrubber is designed, including a box body, a box cover and a solid-liquid separation structure. The solid-liquid separation structure can move up and down, and solid-liquid separation is achieved through the bracket and the filter plate, and the gas flow path is changed through the baffle to reduce the possibility of sewage overflow or entering the fan.
The kinetic energy of sewage is reduced through the up and down movement of the solid-liquid separation structure, and the sewage overflow or entry into the fan is reduced, so as to effectively separate sewage and prevent sewage overflow.
Smart Images
Figure CN119523367A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of floor cleaning equipment, and in particular to a sewage tank structure of a floor scrubber and the floor scrubber. Background Art
[0002] A floor scrubber is a cleaning device that is suitable for cleaning hard floors and sucking out wastewater and taking it away from the site. It has the advantages of being environmentally friendly, energy-saving, and highly efficient. Among them, the sewage tank is one of the main components of the floor scrubber. The sewage is sucked into the sewage tank by the fan to complete the cleaning work. However, when the sewage tanks currently on the market absorb a large amount of sewage or are in a flat state, the sewage level in the sewage tank churns violently, and the kinetic energy of the sewage is large, which makes it easy for the sewage to overflow or enter the fan. Summary of the invention
[0003] Based on this, it is necessary to provide a sewage tank structure of a floor scrubber and a floor scrubber that can reduce the occurrence of sewage overflowing or entering a fan.
[0004] A sewage tank structure of a floor scrubber comprises: a tank body, a tank cover and a solid-liquid separation structure, wherein a tank opening is provided on the top of the tank body, the tank cover is connected to the tank opening, the tank cover has an air outlet, the tank body is also provided with a water inlet for sewage to enter, the solid-liquid separation structure can be movably arranged in the tank body up and down, the solid-liquid separation structure comprises a bracket and a filter plate, a plurality of filter holes are provided on the filter plate, one end of the bracket is connected to the filter plate, and the other end is movably connected to the tank cover, and the water inlet is located above the filter plate.
[0005] In one of the embodiments, a water inlet pipe extending toward the box cover is provided at the bottom of the box body, the water inlet is provided at the upper end of the water inlet pipe, a connecting hole is provided on the filter plate, and the water inlet pipe is passed through the connecting hole.
[0006] In this arrangement, the water inlet is located above the filter plate, so that the solid matter in the sewage will be trapped above the filter plate and will not enter below the filter plate, ensuring effective separation of solids and liquids in the sewage. The water inlet pipe is inserted into the connection hole, so that the water inlet pipe plays a certain guiding role in the up and down movement of the solid-liquid separation structure.
[0007] In one of the embodiments, a partition extending downward is provided on the box cover, and the partition and the side wall of the box body away from the bracket enclose a splash-proof cavity, and the upper end of the water inlet pipe extends into the splash-proof cavity.
[0008] With such arrangement, the partition can prevent sewage from splashing out of the air outlet.
[0009] In one of the embodiments, the solid-liquid separation structure further includes a limiting portion provided on the bracket, and the limiting portion is slidably matched with the outer wall of the partition to limit the movement of the solid-liquid separation structure in the up and down directions.
[0010] Such an arrangement can ensure that the solid-liquid separation structure always moves in the up-and-down direction, avoiding the situation of tilting and jamming.
[0011] In one embodiment, the solid-liquid separation structure is detachably connected to the box cover.
[0012] With such arrangement, when the box cover is removed from the box body, the solid-liquid separation structure and the solid matter thereon are removed together, which is convenient for cleaning. In addition, the solid-liquid separation structure can be removed from the box cover, so that it can be thoroughly cleaned without the possibility of dirt and grime being hidden.
[0013] In one of the embodiments, the solid-liquid separation structure also includes a baffle connected to the bracket, and the baffle is arranged on the gas flow path between the inner cavity of the box body and the gas outlet. When the solid-liquid separation structure moves up and down, the baffle can change the flow area of the gas flow path.
[0014] With such a configuration, when the sewage level in the box churns violently and the kinetic energy of the sewage is large, the flow area of the gas flow path is changed through the baffle, and when the sewage churns upward, the baffle moves upward to reduce the air outlet area, thereby increasing the resistance in the box, reducing the suction force of the floor scrubber, and thereby reducing the situation where sewage overflows or enters the fan.
[0015] In one embodiment, the lower end of the box cover is provided with an extension portion extending downward, and the extension portion is provided with an air outlet channel, and the air outlet channel has a first opening and a second opening. The air outlet channel is connected to the inner cavity of the box body through the first opening, and the air outlet channel is connected to the air outlet through the second opening. The first opening is arranged toward the side wall of the box body, and the second opening is arranged upward. The baffle is arranged horizontally and can be movably arranged up and down in the air outlet channel.
[0016] In this way, the gas flow path between the inner cavity of the box and the air outlet includes a first opening, an air outlet channel and a second opening, the first opening is arranged toward the side wall of the box, and the second opening is arranged upward, so that the gas flow path between the inner cavity of the box and the air outlet forms a curved path, so that sewage is less likely to be carried by the airflow and overflow from the air outlet or enter the fan. By arranging the baffle plate horizontally and moving the baffle plate up and down, the flow area of the gas flow path can be changed.
[0017] In one of the embodiments, slide rails are provided on both sides of the extension part, sliding parts are connected to both ends of the baffle, the sliding part is provided with a slide groove, the slide groove slides with the slide rail, and a limit plate is provided at the lower end of the extension part, and the limit plate is used to limit the downward movement of the sliding part.
[0018] In this way, the solid-liquid separation structure is movably connected to the box cover through the cooperation of the expansion part and the sliding part. Due to the setting of the limit plate, when the box cover is removed from the box body, the solid-liquid separation structure can be removed together with the box cover. The solid-liquid separation structure and the box cover are connected by the cooperation of the slide groove and the slide rail, which has a simple structure and is easy to disassemble and assemble, while not affecting the up and down movement of the solid-liquid separation structure.
[0019] In one embodiment, the bracket includes two vertical plates extending along the axial direction of the box body, and a connecting plate connecting the two vertical plates, and the baffle is connected to the upper ends of the vertical plates.
[0020] With such arrangement, the solid-liquid separation structure is very simple and occupies little space in the box body, so that the sewage tank structure has a larger solid-liquid separation volume, which is beneficial to the complete separation of solids and liquids in the sewage.
[0021] A floor scrubber comprises the sewage tank structure of the floor scrubber as described above.
[0022] Compared with the prior art, the sewage tank structure of the floor scrubber provided by the present application has a solid-liquid separation structure that can be movably arranged up and down in the tank body. When the floor scrubber absorbs a large amount of ground sewage or is in a flat state, the solid-liquid separation structure moves up and down under the push of the sewage, thereby reducing the kinetic energy of the sewage, thereby reducing the occurrence of sewage overflow or entry into the fan. The solid-liquid separation structure not only plays the role of solid-liquid separation, but also plays the role of reducing sewage overflow or entry into the fan, and has multiple functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 A three-dimensional diagram of a sewage tank structure of a floor scrubber according to an embodiment of the present application;
[0025] Figure 2 for Figure 1 An exploded view of the structure shown;
[0026] Figure 3 for Figure 1a cross-sectional view of the structure shown;
[0027] Figure 4 A three-dimensional diagram of a box body according to an embodiment of the present application;
[0028] Figure 5 This is a schematic diagram of the assembly of the box cover and the solid-liquid separation structure according to one embodiment of the present application;
[0029] Figure 6 A three-dimensional diagram of a box cover according to an embodiment of the present application;
[0030] Figure 7 A three-dimensional diagram of a solid-liquid separation structure according to an embodiment of the present application;
[0031] Figure 8 for Figure 7 Schematic diagram of another view of the structure shown.
[0032] Figure numerals: 10, box body; 11, box opening; 12, water inlet pipe; 13, water inlet; 20, box cover; 201, gas flow path; 21, air outlet; 22, partition; 221, splash-proof cavity; 23, extension part; 231, air outlet channel; 232, first opening; 233, second opening; 234, slide rail; 235, limit plate; 30, solid-liquid separation structure; 31, bracket; 311, vertical plate; 312, connecting plate; 32, filter plate; 321, filter hole; 322, connecting hole; 33, limit part; 34, baffle; 35, sliding part; 351, slide groove; 36, handle; 40, sealing ring. DETAILED DESCRIPTION
[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0037] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0038] See also Figures 1 to 3 The present application provides a sewage tank structure of a floor scrubber, comprising: a box body 10, a box cover 20 and a solid-liquid separation structure 30. The box body 10 is provided with a box opening 11 on the top, the box cover 20 is connected to the box opening 11, the box cover 20 has an air outlet 21, and the box body 10 is also provided with a water inlet 13 for sewage to enter. Under the suction of the fan, the sewage enters the box body 10 from the water inlet 13 along with the air flow, and the sewage and the solid matter in the sewage fall into the inner cavity of the box body 10 under the action of gravity, while the air is discharged through the air outlet 21. The sewage tank structure can collect the sewage generated by cleaning the floor in a timely manner.
[0039] In the present application, the solid-liquid separation structure 30 is movably disposed in the box body 10. The solid-liquid separation structure 30 includes a bracket 31 and a filter plate 32. The filter plate 32 is provided with a plurality of filter holes 321, such as Figure 5As shown. One end of the bracket 31 is connected to the filter plate 32, and the other end is movably connected to the box cover 20, and the water inlet 13 is located above the filter plate 32. Since the bracket 31 of the solid-liquid separation structure 30 is movably connected to the box cover 20, when the box cover 20 is removed from the box body 10 and taken upward, the solid matter (including solid garbage and large particles of foreign matter) in the sewage will be trapped above the filter plate 32, and the sewage will pass through the filter hole 321 and remain in the box body 10, thereby achieving solid-liquid separation.
[0040] In the prior art, the solid-liquid separation structure is usually integrated with the box cover, or the solid-liquid separation structure is fixed in the box as an independent part. When the floor scrubber absorbs a large amount of ground sewage or is in a lying state, the sewage liquid level in the box churns violently and the kinetic energy of the sewage is relatively large. Since the solid-liquid separation structure is fixed, the kinetic energy of the sewage cannot be reduced, so the sewage is easy to overflow or enter the fan.
[0041] The sewage tank structure of the floor scrubber provided in the present application has a solid-liquid separation structure 30 that can be movably arranged up and down in the box body 10. When the floor scrubber absorbs a large amount of ground sewage or is in a flat state, the solid-liquid separation structure 30 moves up and down under the push of the sewage, thereby reducing the kinetic energy of the sewage, thereby reducing the occurrence of sewage overflow or entry into the fan. The solid-liquid separation structure 30 not only plays the role of solid-liquid separation, but also plays the role of reducing sewage overflow or entry into the fan, and has multiple functions.
[0042] like Figure 2 and Figure 3 As shown, a sealing ring 40 is provided at the connection between the box cover 20 and the box body 10. When the box cover 20 is connected to the box body 10, the connection is sealed by the sealing ring 40 to avoid water leakage. In this embodiment, the sealing ring 40 is installed on the box cover 20.
[0043] Please combine Figures 3 to 5 As shown, further, a water inlet pipe 12 extending toward the box cover 20 is provided at the bottom of the box body 10, a water inlet 13 is provided at the upper end of the water inlet pipe 12, a connecting hole 322 is provided on the filter plate 32, and the water inlet pipe 12 is passed through the connecting hole 322. In this way, the water inlet 13 is located above the filter plate 32, so that the solid matter in the sewage will be trapped above the filter plate 32 and will not enter below the filter plate 32, ensuring that the solid and liquid in the sewage are effectively separated. The water inlet pipe 12 is passed through the connecting hole 322, so that the water inlet pipe 12 plays a certain guiding role in the up and down movement of the solid-liquid separation structure 30.
[0044] For further information, see Figure 3 and Figure 6 The box cover 20 is provided with a partition plate 22 extending downward, and the partition plate 22 and the side wall of the box body 10 away from the bracket 31 enclose a splash-proof cavity 221, and the upper end of the water inlet pipe 12 extends into the splash-proof cavity. Figure 3As shown, the solid arrows indicate the flow path of sewage, and the dotted arrows indicate the flow path of air. When sewage enters the housing 10 through the water inlet 13 along with the air flow, the partition 22 can block the splashing water, so that the air and sewage (including the solid matter in the sewage) are effectively separated in the splash-proof cavity. The air bypasses the partition 22 and floats upward, and is discharged from the air outlet 21, while the sewage (including the solid matter in the sewage) falls downward into the housing 10. It can be seen that the partition 22 can prevent sewage from splashing out of the air outlet 21. It is worth mentioning that the two side edges of the partition 22 can be connected to the side walls of the housing 10, or there can be a certain gap between the side walls of the housing 10. The partition 22 only needs to be arranged between the water inlet pipe 12 and the air outlet 21 to separate the water inlet pipe 12 and the air outlet 21.
[0045] For further information, see Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the solid-liquid separation structure 30 also includes a limiting portion 33 provided on the bracket 31, and the limiting portion 33 is slidably matched with the outer wall of the partition 22 to limit the movement of the solid-liquid separation structure 30 in the up and down direction. In this way, it can be ensured that the solid-liquid separation structure 30 always moves in the up and down direction to avoid tilting and blocking. In this embodiment, the outer wall of the partition 22 is an arc surface, and the limiting portion 33 is provided with an arc groove that matches the shape of the outer wall of the partition 22. The arc groove cooperates with the arc surface to ensure the smoothness and stability of the up and down movement of the solid-liquid separation structure 30.
[0046] In the present application, the solid-liquid separation structure 30 is detachably connected to the box cover 20. When the box cover 20 is removed from the box body 10, the solid-liquid separation structure 30 and the solid matter thereon are removed together. When cleaning the sewage tank structure, the solid-liquid separation structure 30 taken out together can be cleaned by removing the box cover 20, thereby reducing the steps of cleaning the sewage tank structure. In addition, the solid-liquid separation structure 30 can also be removed from the box cover 20 to clean the solid-liquid separation structure 30, which is very convenient and can be thoroughly cleaned without the possibility of dirt and grime being hidden.
[0047] For further information, see Figure 3As shown, the solid-liquid separation structure 30 also includes a baffle 34 connected to the bracket 31. The baffle 34 is arranged on the gas flow path 201 between the inner cavity of the box 10 and the gas outlet 21. When the solid-liquid separation structure 30 moves up and down, the baffle 34 can change the flow area of the gas flow path 201. When the solid-liquid separation structure 30 moves upward, the flow area of the gas flow path 201 decreases; when the solid-liquid separation structure 30 moves downward, the flow area of the gas flow path 201 increases. In this way, when the sewage level in the box 10 is violently churning and the kinetic energy of the sewage is large, the flow area of the gas flow path 201 is changed by the baffle 34. When the sewage churns upward, the baffle 34 moves upward to reduce the air outlet area, thereby increasing the resistance in the box 10, reducing the suction of the floor scrubber, and thus reducing the overflow of sewage or the situation of entering the fan.
[0048] See also Figure 3 , Figures 5 to 8 As shown, the lower end of the box cover 20 is provided with an extension portion 23 extending downward, and the extension portion 23 is provided with an air outlet channel 231, and the air outlet channel 231 has a first opening 232 and a second opening 233. The air outlet channel 231 is connected to the inner cavity of the box body 10 through the first opening 232, and the air outlet channel 231 is connected to the air outlet 21 through the second opening 233. In this way, the gas flow path 201 between the inner cavity of the box body 10 and the air outlet 21 includes the first opening 232, the air outlet channel 231 and the second opening 233. The first opening 232 is arranged toward the side wall of the box body 10, and the second opening 233 is arranged upward. In this way, the gas flow path 201 between the inner cavity of the box body 10 and the air outlet 21 forms a curved path, so that the sewage is less likely to be carried by the air flow and overflow from the air outlet 21 or enter the fan. The baffle 34 is arranged horizontally and can be movably arranged in the air outlet channel 231 up and down, so as to change the flow area of the gas flow path 201. Specifically, the airflow entering the air outlet channel 231 from the first opening 232 below the baffle 34 is intercepted by the baffle 34 and cannot be discharged from the second opening 233. Only the airflow entering the air outlet channel 231 from the first opening 232 above the baffle 34 can be discharged from the second opening 233. It can be seen that the up and down movement of the baffle 34 changes the flow rate of the airflow flowing out of the air outlet 21. In this embodiment, the expansion portion 23 is arranged on the side of the partition 22 facing the bracket 31.
[0049] Furthermore, slide rails 234 are provided on both sides of the extension part 23, and sliding parts 35 are provided at both ends of the baffle 34. The sliding part 35 is provided with a slide groove 351, and the slide groove 351 is slidably matched with the slide rail 234. A limit plate 235 is provided at the lower end of the extension part 23, and the limit plate 235 is used to limit the downward movement of the slide part 35, so as to prevent the bracket 31 from being separated from the extension part 23. It can be seen that the solid-liquid separation structure 30 is movably connected to the box cover 20 through the cooperation of the extension part 23 and the slide part 35. Due to the setting of the limit plate 235, when the box cover 20 is removed from the box body 10, the solid-liquid separation structure 30 can be removed together with the box cover 20. The solid-liquid separation structure 30 and the box cover 20 are connected by the slide groove 351 and the slide rail 234, which has a simple structure and is easy to disassemble and assemble, and does not affect the up and down movement of the solid-liquid separation structure 30.
[0050] See also Figure 7 and Figure 8 The bracket 31 includes two vertical plates 311 extending axially along the box body 10, and a connecting plate 312 connecting the two vertical plates 311. The baffle 34 is connected to the upper end of the vertical plate 311, and the filter plate 32 is connected to the lower end of the vertical plate 311. The solid-liquid separation structure 30 is very simple and occupies little space in the box body 10, so that the sewage tank structure has a larger solid-liquid separation volume, which is conducive to the complete separation of solids and liquids in the sewage.
[0051] In this embodiment, the filter plate 32 includes a bottom wall and a side wall, the side wall is arranged around the bottom wall and extends upward, and the filter hole 321 is arranged on the bottom wall. Of course, the filter hole 321 can also be arranged on the side wall. When the solid-liquid separation structure 30 is installed in the box body 10, the side wall of the filter plate 32 is close to the inner wall of the box body 10, or there is a small gap between the side wall of the filter plate 32 and the inner wall of the box body 10, ensuring that the solid matter in the sewage will not fall from the gap between the side wall of the filter plate 32 and the inner wall of the box body 10 to the bottom of the filter plate 32, thereby ensuring the solid-liquid separation effect.
[0052] Furthermore, a handle 36 is provided on the bracket 31. When removing the solid-liquid separation structure 30, the user can hold the handle 36 to remove the solid-liquid separation structure 30 from the box cover 20, so as to avoid getting his hands dirty. In the present application, the handle 36 is connected to the connecting plate 312, and further, the limiting portion 33 is also connected to the connecting plate 312. Figure 7 and Figure 8 As shown, the limiting portion 33 and the handle 36 are respectively connected to opposite sides of the connecting plate 312 .
[0053] The present application also provides a floor scrubber, including the sewage tank structure of the floor scrubber as described above. The floor scrubber also includes a floor scrubber head, a clean water tank, and a fan. The clean water tank provides clean water to the floor scrubber head, and the floor scrubber head uses the clean water to clean the floor. Under the suction of the fan, the sewage formed after cleaning the floor is sucked into the sewage tank structure. When the floor scrubber absorbs a large amount of ground sewage or is in a lying state, the solid-liquid separation structure 30 moves up and down under the push of the sewage, thereby reducing the kinetic energy of the sewage, thereby reducing the occurrence of sewage overflowing or entering the fan. The solid-liquid separation structure 30 not only plays the role of solid-liquid separation, but also plays the role of reducing sewage overflowing or entering the fan, and has multiple functions.
[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0055] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A sewage tank structure of a floor scrubber, characterized in that: include: A box body (10), a box cover (20) and a solid-liquid separation structure (30), wherein the box body (10) is provided with a box opening (11) at the top, the box cover (20) is connected to the box opening (11), the box cover (20) has an air outlet (21), and the box body (10) is also provided with a water inlet (13) for sewage to enter. The solid-liquid separation structure (30) is movably disposed in the box body (10) up and down. The solid-liquid separation structure (30) comprises a bracket (31) and a filter plate (32); the filter plate (32) is provided with a plurality of filter holes (321); one end of the bracket (31) is connected to the filter plate (32) and the other end is movably connected to the box cover (20); the water inlet (13) is located above the filter plate (32).
2. The sewage tank structure of the floor scrubber according to claim 1, characterized in that: The bottom of the box body (10) is provided with a water inlet pipe (12) extending toward the box cover (20), and the upper end of the water inlet pipe (12) is provided with the water inlet port (13). The filter plate (32) is provided with a connection hole (322), and the water inlet pipe (12) is passed through the connection hole (322).
3. The sewage tank structure of the floor scrubber according to claim 2, characterized in that: The box cover (20) is provided with a partition (22) extending downward, and the partition (22) and the side wall of the box body (10) away from the bracket (31) enclose a splash-proof cavity (221), and the upper end of the water inlet pipe (12) extends into the splash-proof cavity (221).
4. The sewage tank structure of the floor scrubber according to claim 3, characterized in that: The solid-liquid separation structure (30) further comprises a limiting portion (33) arranged on the bracket (31), wherein the limiting portion (33) is slidably matched with the outer wall of the partition (22) to limit the movement of the solid-liquid separation structure (30) in the up and down directions.
5. The sewage tank structure of the floor scrubber according to claim 1, characterized in that: The solid-liquid separation structure (30) is detachably connected to the box cover (20).
6. The sewage tank structure of the floor scrubber according to claim 5, characterized in that: The solid-liquid separation structure (30) further comprises a baffle (34) connected to the bracket (31), wherein the baffle (34) is arranged on a gas flow path (201) between the inner cavity of the box body (10) and the gas outlet (21). When the solid-liquid separation structure (30) moves up and down, the baffle (34) can change the flow area of the gas flow path (201).
7. The sewage tank structure of the floor scrubber according to claim 6, characterized in that: The lower end of the box cover (20) is provided with an expansion portion (23) extending downward, the expansion portion (23) is provided with an air outlet channel (231), the air outlet channel (231) has a first opening (232) and a second opening (233), the air outlet channel (231) is connected to the inner cavity of the box body (10) through the first opening (232), and the air outlet channel (231) is connected to the air outlet (21) through the second opening (233), The first opening (232) is arranged toward the side wall of the box body (10), and the second opening (233) is arranged upward. The baffle (34) is arranged transversely and is movably arranged in the air outlet channel (231) up and down.
8. The sewage tank structure of the floor scrubber according to claim 7, characterized in that: Slide rails (234) are provided on both sides of the expansion portion (23), and both ends of the baffle (34) are connected to slide portions (35), and the slide portion (35) is provided with a slide groove (351), and the slide groove (351) is slidably matched with the slide rails (234). A limit plate (235) is provided at the lower end of the expansion portion (23), and the limit plate (235) is used to limit the travel of the sliding portion (35) moving downward.
9. The sewage tank structure of the floor scrubber according to claim 8, characterized in that: The bracket (31) comprises two vertical plates (311) extending axially along the box body (10), and a connecting plate (312) connecting the two vertical plates (311), and the baffle (34) is connected to the upper ends of the vertical plates (311).
10. A floor scrubber, characterized in that: A sewage tank structure comprising a floor scrubber as described in any one of claims 1 to 9.