Sewage tank and floor scrubber

Abstract

The present application relates to a sewage tank and a floor scrubber. The sewage tank includes a sewage tank body and a sewage tank cover; the sewage tank body is provided with a sewage cavity; the sewage tank cover is provided on the sewage tank body, and is provided with a sewage suction port, a sewage channel and a water outlet, the sewage suction port is connected to the water outlet through the sewage channel, and the water outlet is connected to the sewage cavity; the sewage tank cover is also provided with a fan air inlet and an air duct, the fan air inlet is connected to one end of the air duct, and the other end of the air duct is connected to the sewage channel. During the entire sewage recovery process, the air path (i.e., the air flow path formed by the fan air inlet and the air duct) and the water path (the sewage flow path formed by the sewage suction port, the sewage channel, the water outlet and the sewage cavity) are separated, so that the separation of gas and liquid can be effectively achieved, and sewage or foam is prevented from entering the fan from the fan air inlet to cause damage to the fan, thereby improving the safety and reliability of the floor scrubber.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a sewage tank and a floor scrubber. Background Art

[0002] A floor scrubber is a highly efficient cleaning device, mainly suitable for cleaning hard floors. Its structure mainly includes key components such as a motor, a main brush, a clean water tank, a fan, a squeegee and a sewage tank. The working principle is to use a motor to drive the main brush to rotate, and use clean water, cleaning liquid and other cleaning media to scrub the surface to be cleaned. At the same time, the squeegee, under the action of the fan, recovers the sewage on the surface to be cleaned and stores it in the sewage tank to achieve efficient cleaning.

[0003] However, in the related art, there is a hidden danger that sewage or foam in the sewage tank enters the fan and causes damage to the fan, affecting the safety and reliability of the floor scrubber. Summary of the invention

[0004] Based on this, it is necessary to provide a sewage tank and a floor scrubber to address the problem of sewage or foam entering the fan and causing damage to the fan.

[0005] In a first aspect of the present application, a sewage tank is provided, comprising:

[0006] A sewage tank body, wherein the sewage tank body is provided with a sewage cavity; and

[0007] A sewage tank cover, the sewage tank cover is arranged on the sewage tank body, the sewage tank cover is provided with a sewage suction port, a sewage channel and a water outlet, the sewage suction port is communicated with the water outlet through the sewage channel, and the water outlet is communicated with the sewage cavity;

[0008] The sewage tank cover is also provided with a fan air inlet and an air duct, wherein the fan air inlet is communicated with one end of the air duct, and the other end of the air duct is communicated with the sewage channel.

[0009] The sewage tank of this solution is used in a floor scrubber, and cooperates with the fan of the floor scrubber to collect and store the sewage on the surface to be cleaned into the sewage chamber of the sewage tank through the squeegee of the floor scrubber, and prevents sewage or foam from entering the fan and causing damage to the fan. Specifically, when the floor scrubber is working, the fan air inlet is connected to the fan air path, and the fan extracts air from the sewage tank and the sewage channel to form a negative pressure environment in the sewage chamber and the sewage channel. On this basis, the sewage suction port can suck the sewage on the surface to be cleaned into the sewage channel. Since the sewage tank cover is arranged above the sewage tank body, the sewage can flow along the sewage channel to the drain under the action of gravity, and finally flow into the sewage chamber through the drain, completing the collection and storage of sewage. During the entire sewage recovery process, the air path (i.e. the air flow path formed by the fan air inlet and the air duct) and the water path (the sewage flow path formed by the sewage suction port, sewage channel, drain port and sewage chamber) are separated. Therefore, it can effectively achieve gas-liquid separation, prevent sewage or foam from entering the fan from the fan air inlet and causing damage to the fan, thereby improving the safety and reliability of the floor scrubber.

[0010] A second aspect of the present application further provides a floor scrubber, which includes the sewage tank as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be 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 paying any creative work.

[0013] Figure 1 The figure is a cross-sectional structural diagram of a sewage tank according to an embodiment.

[0014] Figure 2 This is a structural diagram of the arrangement of the first anti-sway plate.

[0015] Figure 3 The figure is a cross-sectional structural diagram of a sewage tank according to an embodiment.

[0016] Figure 4 It is a structural diagram of the arrangement of the first baffle and the second baffle and a schematic diagram of the sewage flow direction under normal working conditions.

[0017] Figure 5 FIG. 4 is a cross-sectional structural diagram of a sewage tank in another direction according to an embodiment.

[0018] Figure 6This is a structural diagram of the arrangement of the first baffle and the second baffle from another perspective.

[0019] Figure 7 This is a schematic structural diagram of a sewage tank cover having a drain port in a water storage tank according to an embodiment.

[0020] Figure 8 It is a structural schematic diagram of a sewage tank handle in a storage position according to an embodiment.

[0021] Fig. 9 This is a cross-sectional structural diagram of a sewage tank installed on a partial structure of a floor scrubber according to an embodiment.

[0022] Fig.10 for Fig. 9 A local enlarged structural diagram of point A in the middle.

[0023] Fig.11 for Figure 8 The structural schematic diagram of the sewage tank handle of the embodiment shown is in the lifted position.

[0024] Fig.12 This is a cross-sectional structural diagram of a sewage tank installed on a partial structure of a floor scrubber according to another embodiment.

[0025] Fig.13 for Fig.12 A local enlarged structural diagram of point B in the middle.

[0026] Fig.14 for Fig.12 Schematic diagram of the local enlarged structure at point C in the middle.

[0027] Description of reference numerals:

[0028] 100, sewage tank; 10, sewage tank body; 11, sewage chamber; 12, bottom wall of sewage chamber; 13, top wall of sewage chamber; 20, sewage tank cover; 21, sewage suction port; 22, sewage channel; 23, drain port; 24, fan air inlet; 25, air duct; 26, bottom wall of tank cover; 27, top wall of tank cover; 30, anti-sway structure; 31, first anti-sway plate; 32, second anti-sway plate; 40, barrier structure ; 41. first baffle; 42. second baffle; 44. water storage tank; 441. drain outlet; 50. handle; 60. clamp arm; 61. second clamp rib; 70. second buckle; 80. locking block; 200. chassis; 210. limit member; 211. first clamp rib; 220. slide groove; 230. first buckle; 300. pedal; 310. lock hook; 400. rotating shaft; 410. elastic member. DETAILED DESCRIPTION

[0029] 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.

[0030] In the description of the present application, it should be understood that if the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "horizontal", "top", "bottom", "inside", "outside", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If present, the terms "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] See also Figure 1 , a sewage tank 100 is shown in an embodiment of the present application, and is mainly used in a floor scrubber. The sewage tank 100 includes a sewage tank body 10 and a sewage tank cover 20. It can be understood that the sewage tank cover 20 and the sewage tank body 10 can be two separate parts, and the two can be detachably assembled by at least one of screw connection, snap connection, magnetic connection, etc. to form the sewage tank 100, or the sewage tank cover 20 and the sewage tank body 10 can also be integrally formed, and the specific selection can be made according to actual needs.

[0036] Please continue reading Figure 1 In the present application, the sewage tank cover 20 is arranged on the sewage tank body 10, that is, the sewage tank cover 20 and the sewage tank body 10 are arranged in an upper and lower two-layer structure. This layout of the upper and lower two-layer cavity structure enables the sewage tank cover 20 and the sewage tank body 10 to be tightly combined to form a complete sewage tank 100 with a water inlet and a gas outlet.

[0037] The sewage tank cover 20 is provided with a sewage suction port 21, a sewage channel 22 and a drain port 23. The sewage suction port 21 is connected to the drain port 23 through the sewage channel 22, and the drain port 23 is connected to the sewage chamber 11; the sewage tank cover 20 is also provided with a fan air inlet 24 and an air duct 25. The fan air inlet 24 is connected to one end of the air duct 25, and the other end of the air duct 25 is connected to the sewage channel 22.

[0038] Please also read Figure 2The sewage tank cover 20 and the sewage tank body 10 are both box-shaped structures with a cavity inside. Among them, a sewage chamber 11 is provided inside the sewage tank body 10, and the sewage chamber 11 is used to collect and store sewage; the sewage chamber 11 includes a relative sewage chamber top wall 13 and a sewage chamber bottom wall 12. Optionally, a sewage pouring port that can be opened and closed can also be provided on the sewage tank body 10 to facilitate users to pour out the sewage collected in the sewage chamber 11; more preferably, the sewage pouring port is provided at a position close to any side wall of the sewage chamber 11, and the side wall is provided to facilitate users to completely pour out the sewage collected in the sewage chamber 11 without excessive residue.

[0039] Please combine Figure 5 and Figure 6 Similarly, the cavity inside the sewage tank cover 20 has a relative tank cover top wall 27 and a tank cover bottom wall 26; the cavity inside the sewage tank cover 20 is a place for gas and liquid separation, and the separated sewage flows from the sewage channel 22 on the tank cover bottom wall 26 to the drain port 23 and falls into the sewage cavity 11 at the bottom to be collected and stored.

[0040] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: the sewage tank 100 of this solution is used in a floor scrubber, and cooperates with the fan of the floor scrubber to collect and store the sewage on the surface to be cleaned in the sewage chamber 11 of the sewage tank 100, and prevents sewage or foam from entering the fan and causing damage to the fan. Specifically, when the floor scrubber is working, the fan air inlet 24 is connected to the fan air path, and the fan extracts the air in the sewage tank 100, so that the sewage chamber 11 and the sewage channel 22 form a negative pressure environment. On this basis, the sewage suction port 21 can suck the sewage on the surface to be cleaned into the sewage channel 22 through the squeegee on the floor scrubber chassis 200. Since the sewage tank cover 20 is arranged above the sewage tank body 10, the sewage can flow along the sewage channel 22 to the drain port 23 under the action of gravity, and finally flow into the sewage chamber 11 through the drain port 23, completing the collection and storage of sewage. During the entire sewage recovery process, the air path (i.e., the air flow path formed by the fan air inlet 24 and the air duct 25) and the water path (the sewage flow path formed by the sewage suction port 21, the sewage channel 22, the drain port 23 and the sewage chamber 11) are separated. Therefore, the gas-liquid separation can be effectively achieved, and the sewage is prevented from entering the fan from the fan air inlet 24 and causing damage to the fan, thereby improving the safety and reliability of the floor scrubber.

[0041] Please continue reading Figure 5On the basis of the above embodiment, the bottom wall 26 of the tank cover is tilted, that is, the bottom wall 26 of the tank cover gradually becomes lower from one side to the other side opposite to it, and the drain port 23 is opened on the relatively lower side of the bottom wall 26 of the tank cover. In other words, the top wall 13 of the sewage cavity is also tilted. When the sewage tank cover 20 is covered on the sewage tank 10, the bottom wall 26 of the sewage tank cover 20 fits with the top wall 13 of the sewage cavity, and the drain port 23 is opened on the side where the bottom wall 26 of the tank cover is away from the bottom wall 12 of the sewage cavity. Correspondingly, a docking port adapted to the drain port 23 is opened on the top wall 13 of the sewage cavity.

[0042] With this arrangement, after the sewage sucked from the sewage suction port 21 falls on the bottom wall 26 of the box cover, it flows along the bottom wall 26 of the box cover under the effect of its own gravity and the drainage effect of the inclined bottom wall 26 of the box cover. Figure 4 , Figure 5 In the direction indicated by the middle arrow, sewage flows from the drain port 23 and is stored in the sewage chamber 11, thereby preventing sewage from accumulating in the sewage channel 22 due to poor fluidity, being sucked into the air duct 25 and the fan air inlet 24, and finally entering the fan to cause damage to the fan.

[0043] It is necessary to explain that the above technical solutions can basically achieve the purpose of preventing sewage from entering the fan. Taking into account the use environment, working conditions and other factors of the sewage tank 100, some optimization solutions are further proposed below to more thoroughly realize the separation of gas and liquid and achieve the purpose of preventing sewage from entering the fan.

[0044] Please refer again Figure 2 and Figure 3 Based on any of the above embodiments, the sewage tank 100 also includes an anti-sway structure 30 for suppressing the swaying of sewage in the sewage chamber 11. The anti-sway structure 30 is arranged in the sewage chamber 11 and is connected to at least one wall of the sewage chamber 11.

[0045] When the floor scrubber is working, it often needs to reciprocate back and forth to achieve deep cleaning in heavy pollution scenes. Under such working conditions, the sewage sucked into the sewage tank 10 will inevitably shake significantly under the action of inertia, making it very likely that the sewage collected in the sewage chamber 11 will swing into the upper sewage tank cover 20 through the drain port 23, and then flow into the fan through the fan air inlet 24, causing damage to the fan. Based on this, by setting an anti-swing structure 30 in the sewage chamber 11, the sewage loses fluidity and cannot swing, or the kinetic energy of the sewage shaking is reduced, so that the sewage is not easily swung into the upper sewage tank cover 20, eliminating potential safety hazards.

[0046] The anti-sway structure 30 can be made of porous balls, absorbent sponges, refrigerators, and anti-sway plates. The anti-sway structure 30 mainly plays an anti-sway role by blocking the fluidity of the liquid flow. For example, when a porous ball is used as the anti-sway structure 30, the porous ball can be set on the side wall and top wall 13 of the sewage chamber 11, and the porous characteristics of the porous ball are used to absorb the kinetic energy generated by the sewage hitting the inner wall of the sewage chamber 11, so that the sewage is not easily swung into the upper sewage tank cover 20, eliminating potential safety hazards. When absorbent sponges are used as the anti-sway structure 30, the absorbent sponges can be filled in the sewage chamber 11 and abutted against the wall of the sewage chamber 11 to limit the position, so that the sewage flowing into the sewage chamber 11 is absorbed by the absorbent sponges and loses most of its fluidity, thereby avoiding the shaking of the sewage in the sewage chamber 11; specifically, the absorbent sponges can be porous structures with large specific surface areas such as sponges, foams, and cotton wool. When a refrigerator is selected as the anti-sway structure 30, the refrigerator can be fixedly connected to at least one wall in the sewage chamber 11 to prevent the refrigerator from moving. The refrigerator can freeze the sewage flowing into the sewage chamber 11 through the refrigeration effect and completely lose its fluidity, so that it cannot be shaken.

[0047] Specifically, in an optional embodiment, the anti-sway structure 30 includes a first anti-sway plate 31; one end of the first anti-sway plate 31 is disposed on the sewage chamber top wall 13, and the other end extends toward the sewage chamber bottom wall 12. It should be noted that when the end of the first anti-sway plate 31 away from the box body top wall 13 extends toward the box body bottom wall 12, it can be connected with the sewage chamber bottom wall 12 or maintain a clearance fit. For example, in this embodiment, the end of the first anti-sway plate 31 does not contact the sewage chamber bottom wall 12.

[0048] Please combine Figure 2 The direction indicated by the black arrow in the figure is the first direction, which indicates the main movement direction of the sewage in the sewage chamber 11 when the floor scrubber reciprocates back and forth. In this embodiment, by adding a first anti-sway plate 31, the sewage will hit the first anti-sway plate 31 when swaying in the first direction, so that the kinetic energy of the sewage is reduced and it is not easy to swing into the upper sewage tank cover 20, thereby suppressing the swaying of the sewage in the sewage chamber 11 in the first direction.

[0049] Please continue to combine Figure 3 Furthermore, the first anti-sway plate 31 is preferably arranged near the outer periphery of the drain port 23, so as to form a better barrier effect. When the number of the first anti-sway plate 31 is set to one, the first anti-sway plate 31 adopts a ring structure so as to be arranged around the outer periphery of the port of the drain port 23 to play a role in blocking sewage; when the number of the first anti-sway plate 31 is set to two or more, they can be arranged around the outer periphery of the drain port 23 in a manner of connecting end to end along the circumferential direction.

[0050] Specifically, in this embodiment, the first anti-sway plate 31 can be set as a rectangular cylindrical plastic part, which is inserted into the drain port 23 and extends into the sewage chamber 11 in the sewage tank 10. Further, an annular flange is formed at one end of the first anti-sway plate 31 close to the sewage chamber top wall 13, one surface of the annular flange is pressed by the edge of the drain port 23, and the other opposite surface of the annular flange is hung on the docking interface of the sewage tank cover 20 of the sewage tank 10 that matches the drain port 23. The first anti-sway plate 31 is set in this way, which not only plays a role in installing and positioning the first anti-sway plate 31, but also plays a role in sealing the docking interface between the drain port 23 of the upper sewage tank cover 20 and the lower sewage tank 10. As a further optimized solution, one end of the first anti-sway plate 31 close to the bottom wall 12 of the sewage chamber can be set as a hollow mesh structure, so as to filter the sewage flowing into the sewage chamber 11 through the drain port 23 to prevent the impurities in the sewage from flowing into the sewage tank 10.

[0051] Of course, in other embodiments, a sealing member (e.g., a sealing ring) may be separately provided to seal the water outlet 23 on the sewage tank cover 20 and the matching interface of the lower sewage tank body 10, thereby ensuring the airtightness of the sewage tank 100. In other words, the first anti-sway plate 31 and the sealing member are provided as two separate members, and in this case, the first anti-sway plate 31 may be integrally formed with the sewage chamber top wall 13, one end of the first anti-sway plate 31 is formed on the sewage chamber top wall 13, and the other end extends toward the sewage chamber bottom wall 12.

[0052] Further, please continue to combine Figure 3 The direction indicated by the black arrow in the figure is the second direction, which indicates the main movement direction of the sewage in the sewage chamber 11 when the floor scrubber turns left or right. In this embodiment, by adding a second anti-sway plate 32, the sewage will hit the second anti-sway plate 32 when swaying in the second direction, so that the kinetic energy of the sewage is reduced and it is not easy to swing into the upper sewage tank cover 20, thereby suppressing the swaying of the sewage in the sewage chamber 11 in the second direction.

[0053] Specifically, one end of the second anti-sway plate 32 is disposed on the bottom wall 12 of the sewage chamber and the other end extends toward the top wall 13 of the sewage chamber. It should be noted that when the second anti-sway plate 32 extends toward the top wall 13 of the sewage chamber, it can be connected to or maintain a clearance fit with the top wall 13 of the sewage chamber. For example, in this embodiment, the end of the second anti-sway plate 32 does not contact the top wall 13 of the sewage chamber.

[0054] In each embodiment, the sewage tank body 10 can be specifically configured as a U-shaped member, that is, it includes a base and two extensions arranged at intervals at both ends of the base, and the base and the two extensions have a connected sewage cavity 11 inside. The second anti-sway plate 32 is arranged in the base, and the first anti-sway plate 31 is arranged in the extension. The docking interface matching the drain port 23 is opened on the top wall 13 of the sewage cavity of the extension. Further, in order to further speed up the flow of the sucked sewage from the sewage channel 22 into the sewage cavity 11, a drain port 23 can be opened on the bottom wall 26 of the sewage tank cover 20 corresponding to the position of the two extensions of the sewage tank body 10, and accordingly, a docking interface is opened at the position matching the drain port 23 on the two extensions of the sewage tank body 10, and the sewage flows into the sewage cavity 11 from the two drain ports 23 at the same time, so that the sewage flow rate is doubled, and the sewage is prevented from accumulating in the sewage channel 22.

[0055] Please continue reading Figure 4 , Figure 6 and Figure 7 , Figure 4 The direction indicated by the black arrow is the main movement direction of the sewage sucked into the sewage tank cover 20 from the sewage suction port 21 when the floor scrubber is working normally. On the basis of any of the above embodiments, the sewage tank 100 further includes a blocking structure 40, which is arranged in the sewage tank cover 20 and is arranged around the fan air inlet 24. The blocking structure 40 is used in the cavity inside the sewage tank cover 20 to isolate the fan air inlet 24 from other channels of the cavity. Specifically, the blocking structure 40 is used to isolate the fan air inlet 24 from the sewage suction port 21, and to isolate the fan air inlet 24 from the drain port 23. The blocking structure 40 plays a role in further blocking sewage or foam, thereby preventing sewage or foam from flowing into the fan air inlet 24 and causing damage to the fan.

[0056] Specifically, in an optional embodiment, the barrier structure 40 includes a first baffle plate 41, which is disposed on the top wall 27 of the tank cover inside the sewage tank cover 20, and the first baffle plate 41 is disposed around the outer periphery of the fan air inlet 24, thereby isolating the fan air inlet 24 from the sewage suction port 21 and isolating the fan air inlet 24 from the drain port 23.

[0057] With such arrangement, the sewage sucked in from the sewage suction port 21 is blocked by the first baffle plate 41 and cannot flow into the fan air inlet 24; moreover, even if the sewage flowing along the sewage channel 22 to the drain port 23 and the sewage that has flowed into the sewage tank 10 are shaken in the front-to-back and / or left-to-right directions, it is difficult for them to swing into the fan air inlet 24 due to the blocking of the first baffle plate 41, thereby further improving the protection level of the fan and the safety performance of the floor scrubber.

[0058] For example, in this embodiment, the first baffle 41 is an annular structure, which can be any one of a circular shape, a square shape, etc. Further, when the first baffle 41 is set as a square annular structure, the first baffle 41 is The two ends of the length direction of the side wall close to the sewage suction port 21 are respectively provided with extension parts, and the two extension parts respectively exceed the other two opposite side walls adjacent to the side wall by a certain length.

[0059] On the basis of the above embodiment, further, the partition structure 40 also includes a second baffle 42, which is arranged on the bottom wall 26 of the sewage tank cover 20 and surrounds at least a portion of the first baffle 41, and the second baffle 42 is used to isolate the fan air inlet 24 from the drain outlet 23.

[0060] Specifically, the second baffle 42 is U-shaped and is arranged outside the three U-shaped connected side walls of the first baffle 41 away from the sewage suction port 21, and the two ends of the second baffle 42 are respectively connected to the corresponding extensions. At this time, the second baffle 42 and the first baffle 41 form two consecutive barriers, which can block the sewage from the drain port 23 twice, thereby more thoroughly blocking the sewage from entering the fan air inlet 24 and causing damage to the fan.

[0061] Please continue reading Figure 6 and Figure 7 Furthermore, in another optional embodiment, the first baffle 41 and the second baffle 42 cooperate to form a water storage tank 44, and the second baffle 42 is provided with a drain port 441, which is connected to the water storage tank 44. The sewage collected in the water storage tank 44 can be discharged from the drain port 441 and flow into the sewage channel 22, thereby avoiding the risk of the sewage overflowing into the fan air inlet 24 due to the sewage being too full in the water storage tank 44.

[0062] When the floor scrubber is moving and working, the sewage that swings into the upper sewage tank cover 20 from the drain port 23 will first be blocked by the second baffle 42 to prevent it from moving toward the fan air inlet 24; then, it will be blocked by the upper first baffle 41, causing the sewage to fall into the water storage tank 44. In this way, after being hit by the second baffle 42 and the first baffle 41 in succession, the kinetic energy of the sewage is reduced and collected in the water storage tank 44, and then discharged from the drain port 441 to flow into the sewage channel 22, and finally flow back into the sewage chamber 11, thereby further eliminating the safety hazard of water inflow into the fan.

[0063] Furthermore, the height of the fan air inlet 24 is designed to be higher than the height of the bottom surface of the water storage tank 44, so as to establish a sufficiently large height difference to prevent sewage in the water storage tank 44 from entering the fan air inlet 24 and damaging the fan.

[0064] Furthermore, a filter basket can be provided around the ring sewage suction port 21, and one side wall of the filter basket is in contact with the long side of the first baffle 41. In this way, the sewage sucked up through the sewage suction port 21 will be filtered by the filter basket and then flow to the sewage channel 22, so as to prevent large-sized garbage carried in the sewage from flowing into the sewage cavity 11 or blocking the drain port 23. Based on this, further, a cover that can be easily opened and closed can be provided on the top wall 27 of the sewage tank cover 20 corresponding to the position of the filter basket and / or the water storage tank 44, so that it is convenient for users to maintain the filter basket and / or the water storage tank 44.

[0065] Please continue reading Figures 8 to 11 The present application also provides a floor scrubber, which includes a chassis 200 and a sewage tank 100 as described in any of the above embodiments. The chassis 200 is a supporting base of the floor scrubber. In addition to being used to load the sewage tank 100, it is also equipped with a main brush, a water scraping assembly (such as a squeegee), etc. Among them, the main brush can be selected from any one or a combination of a disc brush, a roller brush, a plate brush, etc.

[0066] In one embodiment, the chassis 200 includes a stopper 210, and the sewage tank 100 also includes a handle 50 and a clamp arm 60 connected thereto. The handle 50 is rotatably disposed on the sewage tank body 10 or the sewage tank cover 20, and the handle 50 has a lifting position and a storage position. When the sewage tank 100 is mounted on the chassis 200 and the handle 50 is in the storage position, the clamp arm 60 and the stopper 210 are limitedly matched to lock the sewage tank 100 and the chassis 200. When the handle 50 is in the lifting position, the clamp arm 60 is separated from the stopper 210 to unlock the sewage tank 100 and the chassis 200. It is necessary to explain that the handle 50 and the clamp arm 60 can be two independent components connected to each other, or can be an integrated structure, so as to facilitate linkage.

[0067] In this way, the sewage tank 100 has the linkage effect of lifting and unlocking as well as putting down and locking, which improves the convenience of using the sewage tank 100, reduces the difficulty of assembling and disassembling the sewage tank 100, and helps to improve the user experience.

[0068] Furthermore, the stopper 210 is provided with a first clamping rib 211, and the clamping arm 60 is provided with a second clamping rib 61, and the second clamping rib 61 can be clamped and matched with the first clamping rib 211. When the handle 50 is rotated and lowered, the first clamping rib 211 is clamped with the second clamping rib 61, so that the sewage tank 100 can be fixed on the chassis 200 more firmly; when the handle 50 is reversely rotated and lifted, the first clamping rib 211 is separated from the second clamping rib 61. In this way, the reliability of the assembly of the sewage tank 100 and the chassis 200 is further improved.

[0069] Preferably, the first clamping rib 211 and / or the second clamping rib 61 are configured as arc-shaped protrusions, so that when the handle 50 is pulled upward and rotated, the first clamping rib 211 is more easily separated from the second clamping rib 61 .

[0070] Please continue reading Figure 12 to Figure 14 In order to facilitate the installation, locking or unlocking of the sewage tank 100 on the chassis 200, the present application also provides another implementation scheme. Specifically, the floor scrubber also includes a chassis 200, a pedal 300, and a rotating shaft 400. The pedal 300 is rotatably mounted on the rear of the chassis 200 through the rotating shaft 400. A locking hook 310 is provided at the front end of the pedal 300, and a locking block 80 is also provided at the rear end of the sewage tank 100. When the sewage tank 100 is placed on the chassis 200, the locking block 80 pushes the pedal 300 to rotate and locks with the locking hook 310; when the pedal 300 is forced to rotate in the opposite direction, the locking hook 310 is separated from the locking block 80, and the sewage tank 100 is released. With such a configuration, the locking can be completed by using the gravity of the sewage tank 100; when the user needs to disassemble, he only needs to apply force to the pedal 300, and the sewage tank 100 will be released and in a free state. Furthermore, an elastic member 410 like a torsion spring may be mounted on the rotating shaft 400, and two arms of the elastic member 410 respectively abut against the pedal 300 and the chassis 200, so that the pedal 300 can rotate more smoothly when subjected to force, and the user experience is better.

[0071] On the basis of the above embodiment, further, a side of the chassis 200 close to the sewage tank 100 is provided with a slide groove 220 and a first buckle 230 that cooperate with each other, and a second buckle 70 is also provided at the front end of the sewage tank 100. The second buckle 70 can be slidably inserted into the slide groove 220 and fixed with the first buckle 230.

[0072] Based on the above embodiment, when the sewage tank 100 needs to be installed, the operator first places the sewage tank 100 on the chassis 200, and uses the weight of the sewage tank 100 to smoothly align the second buckle 70 and slide it into the slide groove 220; then, the second buckle 70 is fixed with the first buckle 230 to ensure the initial locking of the front end of the sewage tank 100; then, the operator slowly releases the handle 50, and the weight of the sewage tank 100 continues to act on the locking block 80, pushing it to push the pedal 300 to rotate. During this process, the elastic member 410 will be squeezed and deformed to adapt to the rotation of the pedal 300. When the locking block 80 passes over the outer wall of the locking hook 310, the restoring force of the elastic member 410 will push the pedal 300 to automatically rotate to the reset state, realizing the locking of the locking hook 310 and the locking block 80, and completing the fixed installation of the sewage tank 100. If the sewage tank 100 needs to be disassembled, the operator can first step on the pedal 300 to rotate it. This action will cause the locking hook 310 to separate from the locking block 80, thereby unlocking the rear end of the sewage tank 100. Next, the operator holds the handle 50 and pulls it upward, and the second buckle 70 separates from the first buckle 230 and slides out of the chute 220, completing the overall unlocking of the sewage tank 100. At this time, the sewage tank 100 can be easily lifted and removed from the chassis 200. With this arrangement, the operator hardly needs to bend over, and can quickly and conveniently complete the installation and disassembly of the sewage tank 100 by simply lowering the handle 50 and stepping on the pedal 300. This design not only saves effort, but also improves the convenience of operation, making the entire installation and disassembly process simple and efficient.

[0073] 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.

[0074] 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 construed 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 protection scope of the patent application shall be subject to the attached claims.

Claims

1. A sewage tank, characterized in that: include: A sewage tank body, wherein the sewage tank body is provided with a sewage cavity; as well as, A sewage tank cover, the sewage tank cover is arranged on the sewage tank body, the sewage tank cover is provided with a sewage suction port, a sewage channel and a water outlet, the sewage suction port is communicated with the water outlet through the sewage channel, and the water outlet is communicated with the sewage cavity; The sewage tank cover is also provided with a fan air inlet and an air duct, wherein the fan air inlet is communicated with one end of the air duct, and the other end of the air duct is communicated with the sewage channel.

2. The sewage tank according to claim 1, characterized in that: The sewage tank cover comprises a tank cover bottom wall, the tank cover bottom wall is inclined from one side to the opposite other side, and the drain port is arranged on a relatively lower side of the tank cover bottom wall.

3. The sewage tank according to claim 1, characterized in that: The sewage tank also includes an anti-sway structure for suppressing the swaying of sewage in the sewage chamber. The anti-sway structure is arranged in the sewage chamber and is connected to at least one wall of the sewage chamber.

4. The sewage tank according to claim 3, characterized in that: The sewage chamber includes a relative sewage chamber top wall and a sewage chamber bottom wall, and the anti-sway structure includes a first anti-sway plate, one end of which is arranged on the sewage chamber top wall, and the other end extends toward the sewage chamber bottom wall.

5. The sewage tank according to claim 4, characterized in that: The anti-sway structure also includes a second anti-sway plate, one end of which is arranged on the bottom wall of the sewage chamber, and the other end of which extends toward the top wall of the sewage chamber.

6. The sewage tank according to claim 1, characterized in that: The sewage tank further comprises a baffle structure, which is arranged in the sewage tank cover and is arranged around the air inlet of the fan.

7. The sewage tank according to claim 6, characterized in that: The baffle structure includes a first baffle plate, which is arranged on the top wall of the tank cover inside the sewage tank cover, and the first baffle plate is arranged around the outer periphery of the fan air inlet.

8. The sewage tank according to claim 7, characterized in that: The baffle structure also includes a second baffle, which is arranged on the bottom wall of the tank cover inside the sewage tank cover and surrounds at least a portion of the first baffle, and the second baffle isolates the fan air inlet from the drain outlet.

9. The sewage tank according to claim 8, characterized in that: The first baffle plate and the second baffle plate cooperate to form a water storage tank. The second baffle plate is provided with a drain port, and the drain port is communicated with the water storage tank.

10. A floor scrubber, characterized in that: Comprising a sewage tank as described in any one of claims 1 to 9 above.

11. The floor scrubber according to claim 10, characterized in that: The floor scrubber further includes a chassis, the chassis includes a limiting member, the sewage tank further includes a handle and a clamping arm connected thereto, the handle is rotatably disposed on the sewage tank body or the sewage tank cover, and the handle has a lifting position and a storage position; when the sewage tank is mounted on the chassis and the handle is in the storage position, the clamping arm and the limiting member are limitedly cooperated to lock the sewage tank and the chassis; when the handle is in the lifting position, the clamping arm is separated from the limiting member to unlock the sewage tank and the chassis.

12. The floor scrubber according to claim 11, characterized in that: The position-limiting member is provided with a first clamping rib, and the clamping arm is provided with a second clamping rib engaged with the first clamping rib.

13. The floor scrubber according to claim 10, characterized in that: The floor scrubber also includes a chassis, a pedal and a rotating shaft, wherein the pedal is rotatably mounted on the rear of the chassis via the rotating shaft; a locking hook is provided at the front end of the pedal, and a locking block is also provided at the rear end of the sewage tank; when the sewage tank is placed on the chassis, the locking block pushes the pedal to rotate and locks with the locking hook, and when the pedal is forced to rotate in the opposite direction, the locking hook separates from the locking block to release the sewage tank.

14. The floor scrubber according to claim 13, characterized in that: A slide groove and a first buckle that cooperate with each other are provided on one side of the chassis close to the sewage tank, and a second buckle is provided at the front end of the sewage tank. The second buckle can be slidably installed in the slide groove and fixedly connected with the first buckle.

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