Multi-filtering wringing strip, cleaning head and cleaning appliance

Abstract

The invention discloses a multi-filtering wringing strip, a cleaning head and a cleaning appliance, the multi-filtering wringing strip is mounted on a cleaning head shell, extrudes the surface of a cleaning roller to form a part of a cleaning tank, and comprises a wringing part, an extension part and a mounting part; the water squeezing part extends towards the axis direction of the cleaning roller and is used for scraping and squeezing the surface of the cleaning roller; the extension part extends from the water squeezing part along the tangential direction of the surface of the cleaning roller, so that the surface of the cleaning roller is gradually pre-compressed from a free state to a squeezed state; the mounting part is detachably connected with the cleaning head shell; filter holes are uniformly distributed in the extension part and the water diversion hook. The cleaning head comprises a shell and a cleaning roller installed in the shell, a cleaning groove buckled on the cleaning roller to form an open space is formed in the inner side of the shell, and the multiple-filtering wringing strip is installed on the inner side of the shell. The invention further provides a cleaning appliance which comprises the cleaning head. After the multi-filtering wringing strip is mounted on the scrubber, a cleaning tank of the scrubber has a multi-filtering function.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202310447020.2 entitled "A Multi-Function Filter Squeezing Strip, Cleaning Head and Cleaning Apparatus", the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of cleaning machinery technology, and in particular to a multi-stage filter wringer, a cleaning head, and a cleaning device. Background Technology

[0003] Early floor cleaning tools used by people included brooms, mops, and floor scrubbers, which relied primarily on manual operation. With technological advancements, the demands for floor cleaning tools gradually increased, leading to the emergence of vacuum cleaners. These electric vacuum cleaners use negative pressure to suck up debris and dust from the floor. Classified by cleaning methods and the flow path of small and large debris, this type of technology is generally categorized as air-dust circulation technology. However, due to the limitations of its working principle, vacuum cleaners cannot clean some firmly attached debris and stains. Therefore, a new type of floor scrubber, the "water-dust circulation" scrubber, has emerged. This scrubber uses a motor to drive a cleaning roller that wipes the floor. The cleaning roller typically uses a sponge sleeve structure, and the cleaning power of the floor scrubber is related to the thickness of the sponge sleeve; the thicker the sponge sleeve, the stronger the cleaning power. Simultaneously, this floor scrubber is equipped with a water supply system and a water tank to clean the cleaning sleeve, thus achieving perfect floor cleaning. To clean the cleaning drum, a closed cleaning space connected to the water supply system is usually set up to clean the local drum. Clean water is provided to clean the cleaning drum, and then the wastewater after cleaning the cleaning drum is pumped away.

[0004] The floor scrubber using water-dust circulation technology is equipped with a brush roller installed inside the cleaning head to sweep the debris picked up by the sponge roller into the dustbin. The brush roller does not need to sweep the ground; it only needs to sweep the surface of the sponge roller before it is rinsed by clean water in the lower rear section of the enclosed cleaning space, sweeping the debris blocked outside the water flow channel by the filter device of the enclosed cleaning space into the dustbin.

[0005] Chinese patent CN216393963U discloses a cleaning head and cleaning device. The cleaning head includes a body with a roller. The body has a strip-shaped cavity. On both sides of the cavity opening are pressure strips for applying pressure to the roller surface and scraper strips for removing solid debris from the roller surface. The pressure strips, scraper strips, and cavity form a closed cleaning water tank with the roller surface. A water divider is provided within the cleaning water tank to separate a cleaning area and a water collection area. In use, clean water washes the roller surface. Because the water divider separates the cleaning water tank, it prevents the clean water from re-adhering fine particulate matter from the cleaning water tank to the roller surface during cleaning, thus improving the cleaning efficiency. This also prevents fine particulate matter from re-adhering to the cleaning surface during the cleaning process, which would affect cleaning efficiency.

[0006] Chinese Patent CN215874506U discloses a cleaning head and a cleaning tool. The cleaning head includes: a first roller; a water tank assembly with a flip-top, positioned above the first roller; a detachable second roller assembly, including a second roller positioned behind the first roller in the direction of rotation of the first roller; and a detachable trash can assembly positioned behind the second roller. By incorporating the flip-top water tank assembly, when large debris enters the water tank, the flip-top can be opened to remove the debris, allowing for cleaning of the water tank or rinsing under running water, without needing to disassemble the sponge roller to remove the debris, making it convenient and quick to use. The detachable second roller assembly and trash can assembly make cleaning the brush and trash can even more convenient and quick. Furthermore, the trash can can be automatically opened with a button, reducing contact between the user and the debris, thus improving hygiene. (Instruction manual attached) Figure 3 Paragraph 70 of the specification discloses a water tank assembly with a flip-top, comprising a flip-open water tank sealing cover, a water tank housing, a squeezing and filtering device, and a water sealing device. The water tank housing is connected to a second housing of the cleaning head. The flip-open water tank sealing cover is located above the water tank housing and is used to seal or open the water tank assembly. The squeezing and filtering device is located below the water tank housing and contacts the surface of the first roller, squeezing the first roller to promote the discharge of dirty water from the first roller. The water sealing device is located below the water tank housing and contacts the surface of the first roller. The squeezing and filtering device, the water sealing device, and the surface of the first roller form a water storage space that is connected to the water tank housing.

[0007] In existing water-dust circulation cleaners, the cleaning drum scraper or squeezing filter device only partially achieves the function of squeezing out sewage from the sponge roller. The scraper increases the contact area with the sponge roller by increasing the scraping teeth (the teeth and sponge roller have a slight interference fit, and the concave part of the sponge roller increases the contact area with the scraping teeth). Even with the addition of a filtration structure (a certain number of through holes of a certain diameter are opened on the side of the scraper or squeezing filter device close to the sponge roller), the filtration is still insufficient. At the same time, there is no separation between clean water and sewage after squeezing and filtration, which may result in some clean water not being fully rinsed on the sponge roller and being directly mixed with sewage and flowed away. The cleaning ability of the sponge roller needs to be further improved to improve the cleaning efficiency. Summary of the Invention

[0008] The main technical problem solved by this invention is to provide a multi-filter wringer for floor scrubbers that can improve filtration efficiency and increase clean water utilization. This multi-filter wringer is installed at the rear of the floor scrubber, giving the scrubbing tank of the floor scrubber multiple filtration functions. It can be upgraded without changing the overall structure of the floor scrubber, only by replacing the wringer of the existing floor scrubber. This allows existing floor scrubber users to improve the performance of their floor scrubbers at minimal cost, reduces the risk of the floor scrubber's wastewater pipes being blocked by large particles of debris, and also reduces the risk of large particles of impurities in the wastewater damaging the water pump.

[0009] In a first aspect, the present invention provides a multi-stage filter dewatering strip, which is installed on the cleaning head housing and squeezes the surface of the cleaning roller to form part of the cleaning tank. The multi-stage filter dewatering strip includes a dewatering part and an extension part. The dewatering part extends toward the axis of the cleaning roller and scrapes the surface of the cleaning roller. The extension part extends from the dewatering part along the tangential direction of the surface of the cleaning roller, so that the surface of the cleaning roller is gradually pre-compressed from a free state to a squeezed state. Filter holes are evenly distributed in the extension part and the water-dividing hook.

[0010] In one or more optional embodiments, the multi-filter dewatering strip further includes:

[0011] The water divider hook extends from the extension section in the direction away from the cleaning roller, dividing the cleaning tank into multiple filtration zones.

[0012] In one or more alternative embodiments, the water-dividing hook includes a first water-dividing hook that extends from the end of the extension portion only in a direction away from the cleaning roller.

[0013] In one or more alternative embodiments, the water-dividing hook further includes at least one second water-dividing hook, each second water-dividing hook including an extension section and a vertical section, the extension section extending from the root of the previous water-dividing hook along the tangential direction of the cleaning roller surface, and the vertical section extending from the end of the extension section in a direction away from the cleaning roller.

[0014] In one or more alternative embodiments, the extension portion is provided with a first filter through-hole penetrating its upper and lower surfaces; the gap between the lower surface of the extension portion and the surface of the cleaning roller forms a stratigraphic region.

[0015] In one or more optional embodiments, the water-dividing hook may be provided with a second filter hole penetrating its front and rear surfaces; the upper surface of the extension and the front surface of the water-dividing hook form a first filter area, and the rear surface of the water-dividing hook, the upper surface of the water-collecting strip, and one side wall of the cleaning tank form a flow collection area.

[0016] In one or more optional embodiments, the wastewater squeezed out by the squeezing section is mixed with garbage. One stream of wastewater mixed with large particles of garbage passes through the first filter through-hole to reach the first filter zone, while another stream of wastewater mixed with small particles of garbage passes through the stratosphere zone, flows through the elastic gap between the lower surface of the extension section and the upper surface of the cleaning roller, and between the lower surface of the extension section and the upper surface of the water-collecting strip, to reach the collection zone.

[0017] After passing through the first filtration zone, the wastewater can continue to be filtered through the second filtration holes to remove even finer particles of waste. The wastewater that continues to pass through the second filtration holes can then flow into the collection zone.

[0018] When the wastewater flow rate in the first filtration zone is large and there is not enough time to continue filtering smaller particles of waste, the wastewater can overflow the top of the diversion hook and fall into the collection zone.

[0019] In one or more alternative embodiments, the extension is evenly distributed with first filter holes.

[0020] In one or more alternative embodiments, there is only one water-dividing hook.

[0021] In one or more optional embodiments, the water-dividing hook has evenly distributed filter holes, and the diameter of the first filter hole is larger than that of the second filter hole.

[0022] In one or more optional embodiments, there are two water-dividing hooks. The first water-dividing hook extends only in the direction away from the cleaning roller, and the second water-dividing hook is arranged in two sections. The second water-dividing hook divides the cleaning tank into a second filtration zone. The clean water and the wastewater squeezed out by the squeezing strip must pass through at least one first filtration zone and then continue to pass through the second filtration zone before reaching the collection zone.

[0023] In one or more optional embodiments, there are two or more water-dividing hooks, including a first water-dividing hook and at least two second water-dividing hooks. The first water-dividing hook extends from the end of the extension portion only in a direction away from the cleaning roller. Each second water-dividing hook includes an extension section and a vertical section. The extension section extends from the root of the previous water-dividing hook along the tangential direction of the surface of the cleaning roller, and the vertical section extends from the end of the extension section in a direction away from the cleaning roller.

[0024] Each additional second water divider hook will create an additional filtration zone in the cleaning tank.

[0025] In one or more optional embodiments, the first water-dividing hook is evenly distributed with second filter holes, the second water-dividing hook is evenly distributed with third filter holes, and the filter holes evenly distributed on the second water-dividing hook farther away from the squeezing part have smaller pore sizes.

[0026] In one or more alternative embodiments, the wall thickness gradually narrows from the beginning of the extension to the end of the water-dividing hook.

[0027] In one or more alternative embodiments, the wall thickness is constant from the beginning of the extension to the end of the water-dividing hook.

[0028] In one or more optional embodiments, the multi-filter dewatering strip further includes:

[0029] The mounting section is detachably connected to the cleaning head housing.

[0030] In one or more alternative embodiments, the mounting portion includes a thin-walled first mounting portion perpendicular to the dewatering portion, the first mounting portion being detachably connected to the housing.

[0031] In one or more optional embodiments, the mounting portion further includes a protruding second mounting portion extending upward from the dewatering portion, the second mounting portion engaging with a corresponding groove in the shell.

[0032] In a second aspect, the present invention provides a cleaning head, comprising a housing and a cleaning roller installed inside the housing, wherein the inner side of the housing has a cleaning groove that is fastened to the cleaning roller to form an open space, characterized in that the inner side of the housing is equipped with a multi-layer filter squeezing strip as described in the first aspect.

[0033] In one or more alternative embodiments, the cleaning tank is provided with a water distribution pipe for delivering clean water and / or a water collection pipe for collecting wastewater.

[0034] In one or more alternative embodiments, the water distribution pipe is disposed above the cleaning tank.

[0035] In one or more alternative embodiments, the water distribution pipe is located at the bottom of the cleaning tank.

[0036] In one or more alternative embodiments, the water collection pipe is disposed at the bottom of the cleaning tank.

[0037] In a second aspect, the present invention provides a cleaning head, including a housing and a cleaning roller installed inside the housing. The inner side of the housing has a cleaning groove that is fastened to the cleaning roller to form an open space, and the inner side of the housing is equipped with a multi-layer filter squeezing strip as described in the first aspect.

[0038] In one or more alternative embodiments, the cleaning tank is provided with a water distribution pipe for delivering clean water and / or a water collection pipe for collecting wastewater.

[0039] In one or more alternative embodiments, the water distribution pipe is disposed above the cleaning tank.

[0040] In one or more alternative embodiments, the water distribution pipe is located at the bottom of the cleaning tank.

[0041] In one or more alternative embodiments, the water collection pipe is disposed at the bottom of the cleaning tank.

[0042] Thirdly, the present invention also provides a cleaning appliance, including a cleaning head as described in the second aspect.

[0043] This invention provides a multi-filter wringing strip, installed on the housing of a floor scrubber, which squeezes the surface of a cleaning roller to form part of a cleaning tank. The multi-filter wringing strip includes a wringing portion, an extension portion, and a water-dividing hook. The wringing portion extends towards the axis of the cleaning roller, scraping and squeezing the surface of the cleaning roller. The extension portion extends from the wringing portion along the tangential direction of the cleaning roller surface, gradually pre-compressing the cleaning roller surface from a free state to a squeezed state. The water-dividing hook extends from the extension portion in a direction away from the cleaning roller, dividing the cleaning tank into multiple filtration zones. The extension portion and / or the water-dividing hook are evenly distributed with filter holes. This invention also provides a cleaning head, including a housing and a cleaning roller installed within the housing. The inner side of the housing has a cleaning tank that snaps onto the cleaning roller to form an open space, and the multi-filter wringing strip is installed inside the housing. This invention also provides a cleaning appliance, including a cleaning head with a housing, on which the multi-filter wringing strip is installed.

[0044] The beneficial effects of this invention are as follows: Firstly, the multi-filter wringer strip installed after the floor scrubber gives the scrubber's cleaning tank a multi-filtration function. This allows for upgrades without altering the overall structure of the floor scrubber; only the wringer strip needs to be replaced. This allows existing floor scrubber users to improve product performance at minimal cost, reducing the risk of large particles clogging the wastewater pipes and minimizing the risk of large particles in the wastewater damaging the water pump. Secondly, the multi-filter wringer strip, combined with a reduced gap between the bottom of the wringer strip extension and the surface of the cleaning roller and the upper surface of the squeegee, forces both clean water and wastewater squeezed out by the wringer strip to pass through at least one filtration zone, improving the utilization rate of clean water. Thirdly, the multi-filter wringer strip uses a water-dividing hook to physically partition the floor scrubber's cleaning tank. Combined with the removable flip-top cover of the cleaning tank, this allows users to more precisely and periodically clean potentially clogged filtration zones without thoroughly cleaning the entire tank each time, improving the efficiency of cleaning tank maintenance. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings, without exceeding the scope of protection claimed by this application.

[0046] Figure 1 This is a planing view of the cleaning head in the prior art.

[0047] Figure 2 for Figure 1 A magnified view of a portion of point F in the middle.

[0048] Figure 3 This is a three-dimensional view of the wringing strip in a cleaning head in the prior art.

[0049] Figure 4 This is an embodiment of the multi-filter dewatering strip of the present invention. Figure 1 A magnified view of point F' in a cross-section view.

[0050] Figure 5 This is a center planed view of an embodiment of the cleaning head of the present invention.

[0051] Figure 6 for Figure 5 A magnified view of a portion of point G in the middle.

[0052] Figure 7 This is a center planed view of yet another embodiment of the cleaning head of the present invention.

[0053] Figure 8 for Figure 7 A magnified view of a portion of point H in the middle.

[0054] Figure 9 for Figure 8 A magnified view of a portion of point K.

[0055] Figure 10 Another embodiment of the cleaning head of the present invention is shown below. Figure 8 A magnified view of point K' in the cutaway view.

[0056] Figure 11 This is a centered planed view of another embodiment of the cleaning head of the present invention.

[0057] Figure 12 for Figure 11 A magnified view of a portion of point J in the middle.

[0058] Figure 13 for Figure 12A magnified view of a portion of point L in the middle.

[0059] Figure 14 Another embodiment of the cleaning head of the present invention is shown below. Figure 11 A magnified view of point L' in the cutaway view.

[0060] Figure label:

[0061] 1 Cleaning head, 2 Wiping roller, 4 Water strip, 5 Shovel strip, 6 Brush roller, 10 Cleaning head housing, 11 Removable flip-top cover for cleaning tank;

[0062] 3. Squeezing strip, 31. Squeezing part, 32. Rear extension body, 321. Filter through hole, 33. Water distribution hook, 331. Filter through hole, 34. Snap-fit ​​rib, 35. Mounting part.

[0063] 33a First water divider hook, 33a1 Second filter through hole;

[0064] 33b second water divider hook, 33b1 third filter through hole;

[0065] 33c third water divider hook, 33c1 fourth filter through hole;

[0066] 7 water distribution pipes, 71 water distribution outlets;

[0067] 8 water collection pipes, 81 water collection return outlets;

[0068] A. Stratosphere, B. First filtration zone, C. Second filtration zone, D. Third filtration zone, E. Collector zone.

[0069] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0070] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0071] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0072] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0074] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0075] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0076] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0077] The following will describe the scheme of this application in detail with reference to the accompanying drawings.

[0078] In existing technologies, such as Figures 1 to 3As shown, the wringing strip 3 is installed on the housing 10 of the floor cleaning head 1. The wringing strip 3 squeezes the surface of the cleaning roller 2. The wringing strip 3 is installed on a vertical cleaning roller guard plate (not shown in the figure) on one end face of the inner side of the housing 10. A vertical plate (not shown in the figure) is provided on the opposite side of the guard plate. The water-collecting strip 4 is installed on the vertical plate. Parts of the surface of the wringing strip 3, part of the surface of the cleaning roller 2, part of the surface of the water-collecting strip, part of the surface of the vertical plate, and part of the surface of the cleaning roller guard plate together form a cleaning groove (not shown in the figure) that allows clean water to continuously rinse the upper surface of the cleaning roller. A removable flip cover 11 is also provided on the top of the cleaning groove. The wringing strip 3 includes a wringing part 31, an extension part 32, and a water-dividing hook 33. The wringing part 31 extends towards the axis of the cleaning roller 2 and scrapes the surface of the cleaning roller 2 to remove liquid and solid particle debris adhering to the surface of the cleaning roller 2. The sewage mixed with fine particle debris on the surface of the cleaning roller 2 after rinsing with clean water is also squeezed out by the wringing strip 3. The extension section 32 extends tangentially to the surface of the cleaning roller 2 from the dewatering section 31, gradually pre-compressing the surface of the cleaning roller 2 from a free state to a state about to be squeezed, following the rotation direction of the cleaning roller 2. A large gap exists between the lower surface of the extension section 32 and the upper surface of the cleaning roller 2. This gap provides a flow channel for the wastewater containing fine particles scraped by the dewatering section 31; for ease of discussion, we refer to this channel as the stratosphere region A. A water-diverting hook 33 extends from the extension section 32 in a direction away from the cleaning roller. The extension section 32 is evenly distributed with first filter holes 321 penetrating its upper and lower surfaces. Although the extension section 32 has first filter holes 321 evenly distributed across its upper and lower surfaces, the gap between the lower surface of the extension section 32 and the upper surface of the cleaning roller 2 is relatively large. As a result, much of the clean water, mixed with the wastewater squeezed out by the squeezing section 31, flows along the laminar flow zone A on the upper surface of the cleaning roller 2 to the collection zone E of the cleaning tank before being truly thoroughly rinsed. The wastewater is then pumped away by the wastewater pipe (not shown in the attached diagram) only after reaching the collection zone E. Therefore, the cleaning efficiency of the clean water needs improvement. When there is solid, liquid, or mixed waste on the surface to be cleaned, the cleaning roller 2 first rolls the solid, liquid, or mixed waste into the waste guide channel (not shown in the attached diagram) through the shovel bar 5. Then, the brush roller 6 further sweeps the solid waste that has passed through the waste guide channel into the waste box (not shown in the attached diagram). Some sticky waste, liquid waste, and fine particulate waste are difficult to be swept away by the brush roller 6 and will be further rolled and passed through the tip of the water-collecting bar 4 (not shown in the attached diagram) and the water-squeezing part 31 of the water-squeezing bar 3. The water-squeezing part can scrape and separate the sticky waste, liquid waste, and mixed waste containing fine particulate waste from the upper surface of the cleaning roller 2, and then be further washed away by the clean water in the cleaning tank, thereby achieving the cleaning of the surface to be cleaned.

[0079] Firstly, such as Figures 4-14As shown, this invention provides a multi-filter wringer strip 3, installed on the housing 10 of the cleaning head 1 of a floor scrubber. The wringer strip 3 squeezes the surface of the cleaning roller 2. The wringer strip 3 includes a wringing part 31, an extension part 32, and a water-dividing hook 33. The wringing part 31 extends towards the axis of the cleaning roller 2, scraping and squeezing the surface of the cleaning roller 2 to remove liquid and solid particle debris adhering to the surface of the cleaning roller 2. Wastewater mixed with fine particle debris on the surface of the cleaning roller 2 after rinsing with clean water is also squeezed out by the wringer strip 3. The extension part 32 extends from the wringing part 31 along the tangential direction of the surface of the cleaning roller 2, and along the rotation direction of the cleaning roller 2, gradually pre-compresses the surface of the cleaning roller 2 from a free state to a state about to be squeezed. A small elastic gap exists between the lower surface of the extension section 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension section 32 and the upper surface of the water-collecting strip 4. The extension section 32 is evenly distributed with first filter holes 321 penetrating its upper and lower surfaces. The diameter of the first filter holes 321 is larger than the minimum gap between the lower surface of the extension section 32 and the upper surface of the cleaning roller 2. The water-dividing hook 33 extends from the extension section 32 in a direction away from the cleaning roller, dividing the cleaning tank into multiple water flow filtration zones. Since the aforementioned extension section 32 is evenly distributed with first filter holes 321, the sewage on the surface of the cleaning roller 2 squeezed out by the squeezing section 31, mixed with fine particles of debris, reaches different areas of the cleaning tank in two paths. One path of sewage, mixed with larger particles of debris, passes through the first filter holes 321 to reach the first filtration zone B, and the other path of sewage, mixed with smaller particles of debris, passes through the stratosphere zone A, flows through the elastic gap between the lower surface of the extension section 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension section 32 and the upper surface of the water-collecting strip 4, and reaches the collection zone E. The water-dividing hook 33 is evenly distributed with second filter through-holes 331 penetrating its front and rear surfaces. The diameter of the second filter through-holes 331 is smaller than the diameter of the first filter through-holes 321 in the extension portion 32. After the wastewater passes through the first filtration zone B, it can continue to pass through the second filter through-holes 331 to filter finer particles. Wastewater that continues to pass through the second filter through-holes 331 can further flow into the collection zone E. When the wastewater flow rate in the first filtration zone B is large and there is not enough time to continue filtering finer particles, the wastewater can overflow the top of the water-dividing hook 33 and fall into the collection zone E. The squeezing strip 3 can have more than one water-dividing hook. When the squeezing strip 3 has only one water-dividing hook, the water-dividing hook 33 only has a vertical section (not shown in the attached figure), and the water-dividing hook 33 only extends in the direction away from the cleaning roller 2. When the dewatering strip 3 has only two dewatering hooks, the first dewatering hook 33a has only a vertical section (not shown in the attached figure), and the first dewatering hook 33a extends only in the direction away from the cleaning roller 2; the second dewatering hook 33b includes an extension section and a vertical section, the extension section extends from the root of the first dewatering hook 33a along the tangential direction of the surface of the cleaning roller 2, and the vertical section extends from the end of its extension section in the direction away from the cleaning roller.When the desqueezing strip 3 has two or more water-dividing hooks, the water-dividing hooks include a first water-dividing hook and a second water-dividing hook. The first water-dividing hook extends from the end of the extension portion 32 only in a direction away from the cleaning roller. Each second water-dividing hook includes an extension section and a vertical section. Its extension section extends from the root of the previous water-dividing hook along the tangential direction of the surface of the cleaning roller 2, and its vertical section extends from the end of its extension section in a direction away from the cleaning roller.

[0080] In this application, the multi-filter wringing strip 3, in conjunction with the elastic gap between the bottom of the extension portion 32 and the upper surface of the cleaning roller 2 and the upper surface of the water-collecting strip 4, forces the clean water and the wastewater squeezed out by the wringing strip to pass through at least one water flow filtration zone before reaching the collection zone, thus improving the utilization rate of clean water. Furthermore, the multi-filter wringing strip 3 uses the water-dividing hook 33 to physically partition the cleaning tank of the floor scrubber. Combined with the removable flip-top cover of the cleaning tank, this allows users to more accurately and periodically clean filter areas that may be at risk of clogging, without having to thoroughly clean the entire cleaning tank every time, thus improving the efficiency of cleaning tank maintenance.

[0081] Figure 4 A schematic diagram showing a wringer strip with a single water-diverting hook installed in a cleaning head cleaning tank according to an example embodiment of this application, and a schematic diagram showing the direction of clean water flow.

[0082] In some embodiments, such as Figure 4 As shown, the squeezing strip 3 has only one water-dividing hook 33, on which second filter through holes 331 are evenly distributed. Compared with the prior art, this embodiment has second filter through holes 331 evenly distributed on the water-dividing hook, and further narrows the gap between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, forcing the clean water and the wastewater squeezed out by the squeezing strip to pass through at least one first filtration zone B before reaching the collection zone E, thereby improving the utilization rate of clean water.

[0083] Figure 5 , Figure 6 A schematic diagram of a wringer strip with two water-diverting hooks installed in a cleaning head cleaning tank according to an example embodiment of this application, and a schematic diagram of the water flow direction are shown.

[0084] In some embodiments, such as Figure 5 , Figure 6As shown, the dewatering strip 3 has two water-dividing hooks. The first water-dividing hook 33a has only a vertical section (not shown in the attached figure) and extends only in the direction away from the cleaning roller 2. The second water-dividing hook 33b includes an extension section and a vertical section. The extension section extends from the root of the first water-dividing hook 33a along the tangential direction of the surface of the cleaning roller 2, and the vertical section extends from the end of its extension section in the direction away from the cleaning roller. The first water-dividing hook 33a and the second water-dividing hook 33b are respectively evenly distributed with second filter through holes 33a1 and third filter through holes 33b1. The diameters of the three types of filter holes and the minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, from largest to smallest, are as follows: First filter hole 321 > Second filter hole 33a1 > Third filter hole 33b1 > Minimum distance between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4. Compared with the prior art, this embodiment has an additional water-dividing hook on the squeezing strip, and both water-dividing hooks are evenly distributed with filter holes, thus dividing the cleaning tank into an additional second filtration zone C. This forces the clean water and the wastewater squeezed out by the squeezing strip to pass through at least one first filtration zone B and then continue through the second filtration zone C before reaching the collection zone E, further improving the utilization rate of clean water. When the sewage volume is large, although the sewage that has overflowed the first filtration zone B is not fully filtered after passing through the first dividing hook 33a, it can still continue to the second filtration zone C for further filtration. Sewage that has escaped the second filtration through-hole 33a1 can also have the opportunity to pass through the third filtration through-hole 33b1 for filtration. Only when the sewage volume is large enough to simultaneously overflow the first dividing hook 33a and the second dividing hook 33b can a small amount of sewage escape the filtration of the second filtration through-hole 33a1 and the third filtration through-hole 33b1 and directly enter the collection zone E.

[0085] Figure 7 , Figure 8 , Figure 9 The diagram shows a cleaning tank with a water distribution pipe at the top and a water collection pipe at the bottom, and a water squeezing strip with two water-dividing hooks installed on a cleaning head, according to an example embodiment of this application. The diagram also shows the direction of clean water flow.

[0086] In some embodiments, such as Figure 7 , Figure 8 , Figure 9As shown, a water distribution pipe 7 is installed at the top of the cleaning tank, with water inlets 71 evenly distributed on the water distribution pipe 7. A water collection pipe 8 is installed at the bottom of the cleaning tank, with water inlets 81 evenly distributed on the water collection pipe 8. In addition to the conventional water-dust circulating floor scrubber's right-in-left-out or left-in-right-out flow direction of clean water in the cleaning tank, the water distribution pipe 7 and the water collection pipe 8 can also simultaneously provide clean water to the cleaning tank from top to bottom. The squeezing strip 3 is equipped with a first water-dividing hook 33a and a second water-dividing hook 33b, on which a second filter through hole 33a1 and a third filter through hole 33b1 are evenly distributed, respectively. The diameters of the three filter orifices and the minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, from largest to smallest, are as follows: First filter orifice 321 > Second filter orifice 33a1 > Third filter orifice 33b1 > Minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4. The clean water sent to the stratosphere zone A and the clean water sprayed from the distribution pipe 7 to the first filtration zone B will also undergo the aforementioned process and eventually reach the collection zone E, where it will be drawn away by the sewage pipe or the collection pipe 8.

[0087] Figure 10 The diagram shows a cleaning tank with a water distribution pipe at the bottom and a water collection pipe at the bottom of the cleaning tank, and a water squeezing strip with two water-dividing hooks installed on the cleaning head, according to an example embodiment of this application. The diagram also shows the direction of clean water flow.

[0088] In some embodiments, such as Figure 10 As shown, a water distribution pipe 7 is provided at the bottom of the cleaning tank, with water outlets 71 evenly distributed on the water distribution pipe 7. The water distribution pipe 7 is positioned before the squeezing section 31 in the direction of rotation of the cleaning roller 2, and is located between the squeezing section 31 and the extension section 32. The water outlets 71 directly point towards the stratosphere zone A. A water collection pipe 8 is provided at the bottom of the cleaning tank, with water collection outlets 81 evenly distributed on the water collection pipe 8. In addition to the conventional water-dust circulating floor scrubber's right-in-left-out or left-in-right-out flow direction of clean water in the cleaning tank, the water distribution pipe 7 and the water collection pipe 8 can also simultaneously provide clean water to the cleaning tank from front to back. The squeezing strip 3 is provided with a first water-dividing hook 33a and a second water-dividing hook 33b, on which second filter through holes 33a1 and third filter through holes 33b1 are evenly distributed, respectively. The diameters of the three filter orifices and the minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, from largest to smallest, are as follows: First filter orifice 321 > Second filter orifice 33a1 > Third filter orifice 33b1 > Minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4. The clean water sent to the stratosphere zone A and the clean water sprayed from the distribution pipe 7 to the stratosphere zone A will also undergo the aforementioned process and eventually reach the collection zone E, where it will be pumped away by the sewage pipe or the collection pipe 8.

[0089] Figure 11 , Figure 12 , Figure 13 The diagram shows a cleaning tank with a water distribution pipe at the top and a water collection pipe at the bottom, and a water squeezing strip with three water-dividing hooks installed on a cleaning head, according to an example embodiment of this application. The diagram also shows the direction of clean water flow.

[0090] In some embodiments, such as Figure 11 , Figure 12 , Figure 13 As shown, a water distribution pipe 7 is installed at the top of the cleaning tank, with water inlets 71 evenly distributed on the water distribution pipe 7. A water collection pipe 8 is installed at the bottom of the cleaning tank, with water inlets 81 evenly distributed on the water collection pipe 8. In addition to the conventional water-dust circulating floor scrubber's right-in-left-out or left-in-right-out flow direction of clean water in the cleaning tank, the water distribution pipe 7 and the water collection pipe 8 can also simultaneously provide clean water to the cleaning tank from top to bottom. The squeezing strip 3 is equipped with a first water-dividing hook 33a, a second water-dividing hook 33b, and a third water-dividing hook 33c, on which a second filter through hole 33a1, a third filter through hole 33b1, and a fourth filter through hole 33c1 are evenly distributed, respectively. The diameters of the four filter orifices and the minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, from largest to smallest, are as follows: First filter orifice 321 > Second filter orifice 33a1 > Third filter orifice 33b1 > Fourth filter orifice 33c1 > Minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4. The clean water sent to the stratosphere zone A and the clean water sprayed from the distribution pipe 7 to the first filtration zone B will also undergo the aforementioned process and eventually reach the collection zone E, where it will be drawn away by the sewage pipe or the collection pipe 8.

[0091] Figure 14 The diagram shows a cleaning tank with a water distribution pipe at the bottom and a water collection pipe at the bottom of the cleaning tank, and a water squeezing strip with three water-dividing hooks installed on the cleaning head, according to an example embodiment of this application. The diagram also shows the direction of clean water flow.

[0092] In some embodiments, such as Figure 14As shown, a water distribution pipe 7 is provided at the bottom of the cleaning tank, with water outlets 71 evenly distributed on the water distribution pipe 7. The water distribution pipe 7 is positioned before the squeezing section 31 in the direction of rotation of the cleaning roller 2, and is located between the squeezing section 31 and the extension section 32. The water outlets 71 directly point to the stratosphere zone A. A water collection pipe 8 is provided at the bottom of the cleaning tank, with water outlets 81 evenly distributed on the water collection pipe 8. In addition to the conventional water-dust circulating floor scrubber's right-in-left-out or left-in-right-out flow direction of clean water in the cleaning tank, the water distribution pipe 7 and the water collection pipe 8 can also simultaneously provide clean water to the cleaning tank from front to back. The squeezing strip 3 is provided with a first water-dividing hook 33a, a second water-dividing hook 33b, and a third water-dividing hook 33c, with a second filter through hole 33a1, a third filter through hole 33b1, and a fourth filter through hole 33c1 evenly distributed on them, respectively. The diameters of the four types of filter holes and the minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4, from largest to smallest, are as follows: First filter hole 321 > Second filter hole 33a1 > Third filter hole 33b1 > Fourth filter hole 33c1 > Minimum distances between the lower surface of the extension portion 32 and the upper surface of the cleaning roller 2, and between the lower surface of the extension portion 32 and the upper surface of the water-collecting strip 4. The clean water sent to the stratosphere zone A and the clean water sprayed into the stratosphere zone A by the water distribution pipe 7 will also undergo the aforementioned process and eventually reach the collection zone E, where it will be pumped away by the sewage pipe or the water collection pipe 8.

[0093] Of course, the squeezing strip 3 can also have more than three water-dividing hooks, including a first water-dividing hook and a second water-dividing hook. Unlike the technical solution of the aforementioned embodiment, there is only one first water-dividing hook, which extends directly from the extension portion 32; the remaining water-dividing hooks are all second water-dividing hooks. The first water-dividing hook extends from the end of the extension portion 32 only in a direction away from the cleaning roller. Each second water-dividing hook includes an extension section and a vertical section. Its extension section extends from the root of the previous water-dividing hook along the tangential direction of the surface of the cleaning roller 2, and its vertical section extends from the end of its extension section in a direction away from the cleaning roller. More water-dividing hooks can divide the cleaning tank into more filtration zones. The particle size of the fine debris that can pass through each filtration stage becomes increasingly finer. The clean water sent to the stratosphere zone A and / or sprayed from the water distribution pipe 7 to the stratosphere zone A will also undergo the aforementioned process and finally reach the collection zone E, and then be drawn away by the sewage pipe and / or the collection pipe 8. The embodiments with three or more water-dividing hooks are similar to the previous embodiments in other details, which will not be repeated here.

[0094] In some embodiments, to facilitate the extrusion and stretching of the aforementioned multi-layer filter dewatering strip using thermoplastic forming of metal materials, such as... Figures 4-14The single-section profile shown can also be formed by thermoplastic molding of non-metallic materials to create the required shape. In order to facilitate further processing such as stamping and machining to create filter holes, the wall thickness gradually narrows from the starting end of the extension of the extrusion strip to the end of the water-dividing hook of the extrusion strip.

[0095] In some embodiments, to facilitate the extrusion and stretching of the aforementioned multi-layer filter dewatering strip using thermoplastic forming of metal materials, such as... Figures 4-14 The single-section profile shown can also be formed by thermoplastic molding of non-metallic materials to create the required shape. In order to facilitate further processing such as stamping and machining to create filter holes, the wall thickness from the starting end of the extension of the extrusion strip to the end of the water-dividing hook of the extrusion strip is constant.

[0096] In some embodiments, such as Figures 4-14 As shown, the multi-filter wringer strip also includes a mounting portion (not shown in the figure) detachably connected to the floor scrubber housing 10. The mounting portion includes a thin-walled first mounting portion 35 perpendicular to the wringer portion 31, which is detachably connected to the housing 10. The mounting portion also includes a protruding second mounting portion 34 extending upwards from the wringer portion 31, which engages with a corresponding groove in the housing 10. When installing the wringer strip, the user simply needs to first insert the second mounting portion 34 into the corresponding groove in the housing 10, and then use fasteners to secure the first mounting portion 35 to the housing 10, thus completing the installation. When disassembling the wringer strip, the user simply needs to first loosen the fasteners on the first mounting portion 35 to disconnect it from the housing 10, and then pull the second mounting portion 34 out of the corresponding groove in the housing 10, thus completing the disassembly. This design allows the mounting section to withstand the lateral (tangential) and longitudinal (direction towards the axis of the cleaning roller 2) torque from the squeezing section 31, ensuring that the squeezing strip 3 can stably scrape the surface of the cleaning roller 2 even during high-speed rotation. The installation and removal of the squeezing strip is very convenient, reducing the difficulty for users in maintaining the cleaning head. Of course, other structural forms can be used for the mounting section; any solution that allows the squeezing strip to stably withstand the lateral and longitudinal torque from the squeezing section 31 falls within the scope of this application.

[0097] Secondly, such as Figures 4-14As shown, the present invention also provides a cleaning head, including a housing and a cleaning roller installed inside the housing. The inner side of the housing has a cleaning groove that forms an open space by fastening to the cleaning roller. A multi-stage filter squeezing strip, including a squeezing section, an extension section, and a water-dividing hook, is installed inside the housing. The squeezing section extends towards the axis of the cleaning roller and scrapes the surface of the cleaning roller. The extension section extends from the squeezing section along the tangential direction of the surface of the cleaning roller, gradually pre-compressing the surface of the cleaning roller from a free state to a squeezed state. The water-dividing hook extends from the extension section in a direction away from the cleaning roller, dividing the cleaning groove into multiple filtration zones. The extension section and / or the water-dividing hook are evenly distributed with filter holes. Other details of this cleaning head embodiment that are the same as those in the aforementioned multi-stage filter squeezing strip embodiment will not be repeated here.

[0098] Thirdly, such as Figures 4-14 As shown, the present invention also provides a cleaning device, including a cleaning head with a housing. The housing of the cleaning head is equipped with a multi-layer filter squeezing strip comprising a squeezing section, an extension section, and a water-dividing hook. The squeezing section extends towards the axis of the cleaning roller, scraping and squeezing the surface of the cleaning roller. The extension section extends from the squeezing section along the tangential direction of the surface of the cleaning roller, gradually pre-compressing the surface of the cleaning roller from a free state to a squeezed state. The water-dividing hook extends from the extension section in a direction away from the cleaning roller, dividing the cleaning tank into multiple filtration zones. The extension section and / or the water-dividing hook are evenly distributed with filter holes. Other details of this cleaning device embodiment that are the same as those in the aforementioned multi-layer filter squeezing strip embodiment will not be repeated here.

[0099] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A multi-stage filter dewatering strip, installed on a cleaning head housing, squeezes the surface of a cleaning roller to form part of a cleaning tank, characterized in that, The multi-stage filter dewatering strip includes a dewatering section and an extension section; the dewatering section extends toward the axis of the cleaning roller and scrapes the surface of the cleaning roller; the extension section extends from the dewatering section along the tangential direction of the surface of the cleaning roller, so that the surface of the cleaning roller is gradually pre-compressed from a free state to a squeezed state; wherein, the extension section and the water distribution hook are evenly distributed with filter holes. Preferably, the multi-filter dewatering strip also includes: The water divider hook extends from the extension section in the direction away from the cleaning roller, dividing the cleaning tank into multiple filtration zones; Preferably, the water-dividing hook includes a first water-dividing hook, which extends from the end of the extension portion only in a direction away from the cleaning roller; Preferably, the water-dividing hook further includes at least one second water-dividing hook, each second water-dividing hook including an extension section and a vertical section, the extension section extending from the root of the previous water-dividing hook along the tangential direction of the surface of the cleaning roller, and the vertical section extending from the end of the extension section in a direction away from the cleaning roller.

2. The multi-stage filter dewatering strip as described in claim 1, characterized in that, The extension section is provided with a first filter through-hole that penetrates its upper and lower surfaces; the gap between the lower surface of the extension section and the surface of the cleaning roller forms a stratigraphic zone; Preferably, the water divider hook may be provided with a second filter hole that penetrates its front and rear surfaces; the upper surface of the extension portion and the front surface of the water divider hook form a first filter area, and the rear surface of the water divider hook, the upper surface of the water-collecting strip, and one side wall of the cleaning tank form a flow collection area. Preferably, the wastewater squeezed out by the squeezing section is mixed with garbage. One stream of wastewater mixed with large particles of garbage passes through the first filter through-hole to reach the first filter zone, while the other stream of wastewater mixed with small particles of garbage passes through the stratosphere zone, flows through the elastic gap between the lower surface of the extension section and the upper surface of the cleaning roller, and between the lower surface of the extension section and the upper surface of the water-collecting strip, to reach the collection zone. After passing through the first filtration zone, the wastewater can continue to be filtered through the second filtration holes to remove even finer particles of waste. The wastewater that continues to pass through the second filtration holes can then flow into the collection zone. When the wastewater flow rate in the first filtration zone is large and there is not enough time to continue filtering smaller particles of waste, the wastewater can overflow the top of the diversion hook and fall into the collection zone.

3. The multi-stage filter dewatering strip as described in claim 2, characterized in that, The extension section has evenly distributed first filter holes; Preferably, there is only one water-dividing hook; Preferably, the water distribution hook has evenly distributed filter holes, and the diameter of the first filter hole is larger than that of the second filter hole.

4. The multi-stage filter dewatering strip as described in claim 1, characterized in that, There are two water dividers. The first water divider extends only in the direction away from the cleaning roller, while the second water divider is set in two sections. The second water divider divides the cleaning tank into a second filtration zone. The clean water and the wastewater squeezed out by the squeezing strip must pass through at least one first filtration zone and then continue through the second filtration zone before reaching the collection zone.

5. The multi-stage filter dewatering strip as described in claim 1, characterized in that, There are two or more water-dividing hooks, including a first water-dividing hook and at least two second water-dividing hooks. The first water-dividing hook extends from the end of the extension portion only in the direction away from the cleaning roller. Each second water-dividing hook includes an extension section and a vertical section. The extension section extends from the root of the previous water-dividing hook along the tangent direction of the surface of the cleaning roller, and the vertical section extends from the end of the extension section in the direction away from the cleaning roller. Each additional second water divider hook will create an additional filtration zone in the cleaning tank; Preferably, the first water-dividing hook is evenly distributed with the second filter holes, and the second water-dividing hook is evenly distributed with the third filter holes. The filter holes evenly distributed on the second water-dividing hook that are farther away from the squeezing part have smaller pore sizes.

6. The multi-stage filter dewatering strip as described in claim 1, characterized in that, The wall thickness gradually narrows from the beginning of the extension section to the end of the water-dividing hook.

7. The multi-stage filter dewatering strip as described in claim 1, characterized in that, The wall thickness is constant from the beginning of the extension section to the end of the water-dividing hook.

8. The multi-stage filter dewatering strip as described in claim 1, characterized in that, Also includes: The mounting section is detachably connected to the cleaning head housing; Preferably, the mounting portion includes a thin-walled first mounting portion perpendicular to the dewatering portion, and the first mounting portion is detachably connected to the housing; Preferably, the mounting portion further includes a protruding second mounting portion extending upward from the dewatering portion, the second mounting portion engaging with a corresponding groove in the shell.

9. A cleaning head, comprising a housing and a cleaning roller mounted inside the housing, wherein the inner side of the housing has a cleaning groove that engages with the cleaning roller to form an open space, characterized in that, The inner side of the housing is equipped with a multi-stage filter dewatering strip as described in any one of claims 1-8; Preferably, the washing tank is equipped with a water distribution pipe for conveying clean water and / or a water collection pipe for collecting wastewater; Preferably, the water distribution pipe is installed at the top of the cleaning tank; Preferably, the water distribution pipe is located at the bottom of the cleaning tank; Preferably, the water collection pipe is located at the bottom of the cleaning tank.

10. A cleaning appliance, characterized in that, Including the cleaning head as described in claim 9.

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