Stain removal device and cleaning implement

Abstract

The application discloses a stain removing device and a cleaning tool. The stain removing device is arranged on the upper part of a cleaning head shell and elastically abuts against a scrubbing cleaning roller. The stain removing device comprises a squeezing roller and a guard roller plate. The front end of the cleaning head shell is rotatably provided with a cleaning roller which is detachably connected with the cleaning head shell. The squeezing roller elastically abuts against the cleaning roller at a position which is eccentric to the rear of the rotating direction of the cleaning roller. The guard roller plate is arranged at the rear side of the squeezing roller. One end of the guard roller plate which is close to the squeezing roller elastically abuts against the squeezing roller above the squeezing roller to prevent the fine particle garbage or hair which is rolled up by the squeezing roller from winding on the squeezing roller. The cleaning tool comprises the cleaning head shell, a brush arranged in the cleaning head shell, the cleaning roller, a driving motor for driving the cleaning roller to rotate, a transmission mechanism connected with the driving motor and the stain removing device arranged on the upper part of the cleaning head shell.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202410026462.4 entitled "A Decontamination Device and Cleaning Tool", the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of cleaning equipment technology, and more particularly to a stain removal device and cleaning tool. 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, appeared. This scrubber uses a motor to drive a cleaning drum to wipe the floor, and is also equipped with a water supply system and a water tank to clean the cleaning drum, thus achieving a perfect floor cleaning.

[0004] The applicant's Chinese invention patent CN212326298U discloses a cleaning tool, which includes a cleaning head. The cleaning head includes: a cleaning module comprising a roller and a squeezing roller positioned above the right side of the roller, wherein the right side region of the roller is the area to be cleaned, i.e., the squeezing roller is positioned above the surface of the area to be cleaned; the squeezing roller interferes with the roller, forming a water trough; a housing, including a side housing, has a first wastewater box; the roller and squeezing roller are respectively mounted on the side housing, the first wastewater box is connected to the water trough, and the first wastewater box contains a filter screen and a brush, the brush being used to clean debris from the surface of the filter screen. The bottom end of the squeezing roller interferes with the sponge layer of the roller, i.e., the bottom end of the squeezing roller squeezes the sponge layer, and the squeezing roller and roller form a water trough A. A roller brush is located between the roller and the waste box, used to clean debris from the surface of the roller. Through "water and dust circulation," the roller can achieve self-cleaning and can continuously scrub the surface of the area to be cleaned, resulting in good cleaning effect and high work efficiency. Summary of the Invention

[0005] This application provides a stain removal device and cleaning tool that, while achieving "water and dust circulation," avoids the reduced cleaning efficiency caused by wastewater in the water tank seeping to the ground through the absorbency of the sponge layer of the cleaning roller, as is common in existing technologies. The specific technical solution is as follows:

[0006] In a first aspect, this application provides a cleaning device, which is mounted on the upper part of a cleaning head housing and elastically abuts against a cleaning roller for scrubbing floors, including a squeezing roller and a guard roller plate; a cleaning roller is rotatably provided at the front end of the cleaning head housing and detachably connected to the cleaning head housing, and the squeezing roller rolls against the cleaning roller at a position eccentrically rearward relative to the rotation direction of the cleaning roller; the guard roller plate is provided on the rear side of the squeezing roller, and one end of the guard roller plate near the squeezing roller slides elastically against the squeezing roller above the squeezing roller to prevent fine particles of garbage or hair rolled up by the squeezing roller from getting entangled on the squeezing roller.

[0007] In one or more alternative embodiments, the cleaning device further includes a water-collecting strip disposed on the rear side of the squeezing roller, with the bottom end of the water-collecting strip abutting against the cleaning roller.

[0008] In one or more alternative embodiments, the cleaning device further includes a fixing member connected to the two side walls of the cleaning head housing, and the water-collecting strip and the guard roller plate are detachably connected to the fixing member.

[0009] In one or more alternative embodiments, the fastener is integrally formed with the cleaning head housing.

[0010] In one or more alternative embodiments, the fastener is detachably connected to the two side walls of the cleaning head housing.

[0011] In one or more alternative embodiments, the fastener is provided with at least two fastening grooves;

[0012] Both the water-supporting strip and the guard roller plate include a snap-fit ​​end and a free end. The free end of the water-supporting strip is provided with a water guide tip, and the free end of the guard roller plate is in elastic contact with the extrusion roller.

[0013] In one or more alternative embodiments, the snap-fit ​​ends of the water-collecting strip and the guard roller plate are each provided with at least one fixing ridge, and the water-collecting strip and the guard roller plate are detachably snapped into the fixing groove through the fixing ridge.

[0014] In one or more alternative embodiments, the snap-fit ​​ends of the water-collecting strip and the guard roller plate are made of rigid material, and the free ends of the water-collecting strip and the guard roller plate are made of elastic material.

[0015] In one or more alternative embodiments, the free end of the guard roller plate can be flipped away from the compression roller around the snap-fit ​​end of the guard roller plate.

[0016] In one or more alternative embodiments, the lower surface of the water-collecting strip abuts against the cleaning roller; the interference fit between the water-collecting strip and the cleaning roller gradually decreases downward from the water guide tip, in the opposite direction of rotation of the cleaning roller.

[0017] In one or more alternative embodiments, the free end of the guard roller is provided with a plurality of contact points, which abut against the upper part of the extrusion roller.

[0018] In one or more alternative embodiments, the lower surface of the free end of the guard roller is evenly distributed with contact points.

[0019] In one or more alternative embodiments, the contact point is made of a wear-resistant material.

[0020] In one or more alternative embodiments, the squeeze roller is detachably connected to the two side walls of the cleaning head housing.

[0021] In one or more alternative embodiments, the water guide tip of the water-collecting strip near the squeezing roller elastically abuts against the cleaning roller, guiding the sewage to flow away along the upper surface of the water-collecting strip.

[0022] In one or more alternative embodiments, the lower surface of the guard roller plate, the upper surface of the water-supporting strip, the squeeze roller, and the cleaning roller enclose a closed water-guiding space.

[0023] In one or more alternative embodiments, the central axis of the extrusion roller is offset from the central axis of the cleaning roller by 1° to 5° in the vertical direction.

[0024] In one or more alternative embodiments, the cleaning roller includes a cleaning roller body, the surface of which is provided with a sponge layer. When the sponge layer of the cleaning roller body is in an unsaturated state, a gap is formed between the bottom end of the water-collecting strip and the cleaning roller body, and the seeping sewage drips onto the left side of the cleaning roller body or into the cleaning head housing.

[0025] In one or more alternative embodiments, the squeeze roller rotates by the friction of the cleaning roller body.

[0026] In one or more alternative embodiments, the squeezing roller includes a squeezing roller body and a bearing and an elastic support shaft disposed at one end of the squeezing roller body, and an inner cavity is provided in the squeezing roller body; in use, pressing the squeezing roller body releases the elastic support shaft from the cleaning head housing, and the squeezing roller body can be easily removed from the cleaning head housing.

[0027] In one or more alternative embodiments, the cleaning device further includes:

[0028] The drive motor is located inside the cleaning head housing and is connected to the cleaning roller body;

[0029] The brush is located inside the cleaning head housing and abuts against the cleaning roller body to form an interference fit.

[0030] The transmission mechanism is located inside the cleaning head housing and is connected to the drive motor to drive the cleaning roller, the squeeze roller and the brush to rotate simultaneously.

[0031] In one or more alternative embodiments, one end of the drive motor is provided with an end torque assembly, and the transmission mechanism includes:

[0032] The drive wheel engages with the end torque assembly;

[0033] The first driven gear set meshes with the driving gear.

[0034] The first driven wheel assembly includes a first driven wheel, which meshes with the driving wheel and is connected to the brush;

[0035] or,

[0036] The first driven wheel assembly includes at least two first driven wheels arranged in sequence, with adjacent first driven wheels meshing with each other, and the first driven wheel at the head end meshing with the driving wheel, and the first driven wheel at the tail end connected to the brush.

[0037] In one or more alternative embodiments, the transmission mechanism further includes a second driven wheel set;

[0038] The second driven wheel assembly includes a second driven wheel, which meshes with the driving wheel and is connected to the squeeze roller;

[0039] or,

[0040] The second driven wheel group includes at least two second driven wheels arranged in sequence, wherein two adjacent first driven wheels mesh with each other, and the second driven wheel at the first end meshes with the driving wheel, and the second driven wheel at the tail end is connected to the extrusion roller.

[0041] In one or more alternative embodiments, the bearing is located at one end of the extrusion roller body and covers the opening of the inner cavity; the elastic support shaft is located at one end of the extrusion roller body, and the elastic support shaft includes a locking member and a spring. Part of the locking member is limited to the inner cavity by the bearing. The locking member is elastically connected to the inner wall of the inner cavity through the spring. The locking member extending out of the inner cavity can be locked with the cleaning head housing.

[0042] In one or more alternative embodiments, during use, pressing the squeeze roller body compresses the spring and causes the locking element to move toward the inner cavity, thus releasing it from the cleaning head housing.

[0043] In one or more alternative embodiments, a gear connection portion is provided at the other end of the extrusion roller body relative to the bearing and the elastic support shaft, the gear connection portion comprising:

[0044] The fixing part is connected to the extrusion roller body;

[0045] The connecting part is connected to the fixing part and also to the second driven wheel;

[0046] In use, the drive motor rotates, causing the cleaning roller body to rotate, which in turn drives the drive wheel to rotate. The drive wheel then drives the second driven wheel to rotate, and the second driven wheel in turn drives the squeezing roller body to rotate.

[0047] In a second aspect, this application provides a cleaning tool, including a cleaning head housing, a brush disposed inside the cleaning head housing, a cleaning roller, a drive motor for driving the cleaning roller to rotate, a transmission mechanism connected to the drive motor, and a decontamination device as described in the first aspect disposed on the upper part of the cleaning head housing.

[0048] The transmission mechanism is connected to the brush and the extrusion roller; the brush and the cleaning roller are interference-fitted.

[0049] The drive motor can drive the transmission mechanism to simultaneously rotate the brush and the cleaning roller.

[0050] In summary, the beneficial effects of this scheme are:

[0051] This application provides a stain removal device and cleaning tool. A cleaning roller, a squeeze roller, a guard roller plate, and a water-collecting strip, arranged on the cleaning head housing, form a closed water-guiding space. The squeeze roller and cleaning roller are interference-fitted, allowing the squeeze roller to squeeze the cleaning roller, squeezing out the wastewater absorbed inside the cleaning roller and containing it within the closed water-guiding space. Because the squeeze roller is positioned rearward and eccentrically relative to the cleaning roller's rotation direction, and the closed water-guiding space is located above and behind the cleaning roller, when the cleaning roller is unsaturated, the wastewater squeezed from the surface of the cleaning roller by the squeeze roller flows down the cleaning roller or into the closed water-guiding space under gravity. This prevents wastewater from seeping to the ground through the absorbency of the cleaning roller's sponge layer, thus avoiding compromised cleaning efficiency.

[0052] This application provides a decontamination device and cleaning tool. Since the cleaning roller and the squeezing roller rotate simultaneously, fine particles of debris or hair that are rolled up from the surface to be cleaned by the cleaning roller may become entangled on the squeezing roller again. The contact points evenly distributed on the lower surface of the free end of the guard roller plate can further block the fine particles of debris or hair outside the decontamination device, preventing the fine particles of debris or hair from "locking up" the squeezing roller. At the same time, it is also convenient for the user to clean the fine particles of debris or hair that are blocked outside the free end of the guard roller plate in a timely manner. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A perspective view of the cleaning tool provided by the present invention;

[0055] Figure 2 for Figure 1 Sectional view along line A;

[0056] Figure 3 for Figure 1 Partial 3D image;

[0057] Figure 4 for Figure 1 Enlarged view of a section at point B in the middle;

[0058] Figure 5 for Figure 2 Enlarged view of a section at point C;

[0059] Figure 6 Exploded view of the cleaning tool provided by the present invention;

[0060] Figure 7 Another exploded view of the cleaning tool provided by the present invention;

[0061] Figure 8 A perspective view of the water guide strip and the guard roller plate provided by the present invention after being installed on the fixing component;

[0062] Figure 9 This is a schematic diagram showing the water guide strip and guard roller plate provided by the present invention installed on the fixing component;

[0063] Figure 10 This is a perspective view of the water guide strip and guard roller plate provided by the present invention after they are installed on the fixing component.

[0064] Figure 11 A perspective view of the extrusion roller provided by the present invention;

[0065] Figure 12 for Figure 11 Sectional view along line D;

[0066] Figure 13 An exploded view of the extrusion roller provided by the present invention;

[0067] Figure 14 A comparative schematic diagram showing the position of the extrusion roller body provided by the present invention;

[0068] Explanation of reference numerals in the attached figures:

[0069] 1. Clean the head housing;

[0070] X. Decontamination device;

[0071] 2. Extrusion rollers;

[0072] 21. Extrusion roller body;

[0073] 22. Bearings;

[0074] 23. Elastic support shaft; 231. Locking element; 232. Spring;

[0075] 24. Gear connecting part; 241. Fixing part; 242. Connecting part;

[0076] 3. Cleaning roller; 31. Cleaning roller body; 32. End twist assembly;

[0077] 4. Stain removal components; 4a. Protective roller plate; 4a1. Contact point; 4b. Water-collecting strip; 43. Fixing components;

[0078] 5. Brush;

[0079] 6. Gear set; 61. Driving gear; 62. First driven gear set; 63. Second driven gear set;

[0080] 7. Removable scraper bar;

[0081] 8. Waste guiding components;

[0082] 9. Trash can;

[0083] 10. Water tank;

[0084] 11. Drive motor;

[0085] A. Enclosed water tank space. Detailed Implementation

[0086] 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.

[0087] 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.

[0088] 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 expressly defined; "at least one" means one or more.

[0089] 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.

[0090] The present invention will be further described below with reference to specific embodiments, but these are not intended to limit the scope of the invention.

[0091] The inventors discovered that existing patents, such as CN212326298U, disclose a cleaning tool that utilizes "water and dust circulation" to continuously scrub the surface of the area to be cleaned. However, in actual use, due to interference between the bottom of the squeezing roller and the sponge layer of the roller, the bottom of the squeezing roller squeezes the sponge layer, forming a water trough on one side of the squeezing roller and the roller. That is, part of the bottom of the water trough itself is the water-absorbing sponge layer of the roller. The bottom of the water trough can only remain closed when the sponge layer of the roller is saturated. As long as the sponge layer is unsaturated, water will seep from the bottom of the water trough onto the surface of the cleaning area, compromising the cleanliness of the cleaning area.

[0092] Based on this, after further research and development, the inventors proposed a stain removal device and cleaning tool to solve the above problems.

[0093] See Figures 1 to 3 , Figure 5 , Figure 6 , Figures 8 to 13This embodiment provides a stain removal device X, which is mounted on the upper part of the cleaning head housing 1 and elastically abuts against the cleaning roller 3 used for washing and wiping the floor. The stain removal device includes a squeezing roller 2, a guard roller plate 4a, and a water-retaining strip 4b. The cleaning roller 3 is rotatably mounted on the front end of the cleaning head housing 1, and the cleaning roller 3 can be detachably connected to the cleaning head housing 1 for easy maintenance or installation.

[0094] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the squeeze roller 2 is positioned above the cleaning roller 3. The squeeze roller 2 rolls and abuts against the cleaning roller 3 above it, forming an interference fit. This allows the squeeze roller 2 to squeeze the cleaning roller 3, squeezing out the wastewater contained in the cleaning roller at the contact point. Figure 2 , Figure 5 As shown, the squeezing roller 2 is eccentrically positioned relative to the cleaning roller 3 in its own rotation direction, i.e., the squeezing roller 2 is located above and behind the cleaning roller 3. The guard roller plate 4a and the water-collecting strip 4b of the decontamination device X are located behind the squeezing roller 2. The bottom end of the water-collecting strip 4b abuts against the cleaning roller 3, and the water guide tip 4b1 of the water-collecting strip 4b near the squeezing roller 2 abuts against the cleaning roller 3, guiding the sewage to flow away along the upper surface of the water-collecting strip 4b. The end of the guard roller plate 4a near the squeezing roller 2 slides elastically against the squeezing roller 2 above the squeezing roller 2 to prevent fine particles of garbage or hair rolled up by the squeezing roller 2 from getting tangled on the squeezing roller 2. The lower surface of the guard roller plate 4a, the upper surface of the water-collecting strip 4b, the squeezing roller 2 and the cleaning roller 3 enclose a closed water-guiding space A.

[0095] More specifically, such as Figure 5 As shown, the squeezing roller 2 rolls and abuts against the cleaning roller 3 at a position offset from the highest point of the surface of the cleaning roller 3 relative to the rotation direction of the cleaning roller 3, thereby squeezing out the wastewater contained in the cleaning roller at the contact point. Under the influence of gravity, the wastewater squeezed out from the surface of the cleaning roller 3 by the squeezing roller 2 can only flow counterclockwise downwards on the surface of the cleaning roller 3 as shown in the figure.

[0096] It should be noted that, in this embodiment, refer to Figure 1 , Figure 2 The cleaning tool travels in the direction shown in the diagram to the right, which is the forward direction described in this application. The waste referred to in this embodiment includes dry waste, wet waste, and other waste. Specifically, dry waste refers to non-liquid waste, such as fruit peels, melon seed shells, rice grains, and paper scraps. Wet waste is liquid waste, such as water and beverages. Sticky wet waste includes semi-solid waste with a certain viscosity, such as soup, stew, porridge, tomato sauce, and chocolate sauce. Other waste includes dust, ground stains, etc., which are also the objects of cleaning in this embodiment.

[0097] It should also be noted that the "rearward eccentric setting of the squeezing roller relative to the rotation direction of the cleaning roller" emphasized in this application is in contrast to the situation in some existing floor scrubbers where the squeezing roller is eccentrically set forward along the rotation direction of the cleaning roller. In some existing floor scrubbers, this arrangement causes the wastewater squeezed out by the squeezing roller to continue dripping onto the floor along the rotation direction of the cleaning roller due to gravity. Alternatively, even if the squeezed-out wastewater doesn't drip onto the floor, it may seep back into the cleaning roller surface along its rotation direction, resulting in excessive moisture content on the cleaning roller and an overly wet floor during mopping. The "rearward eccentric setting of the squeezing roller relative to the rotation direction of the cleaning roller" technical solution emphasized in this application perfectly solves the problem of wastewater squeezed out by the squeezing roller dripping onto the floor or being sucked back into the continuing forward-rotating cleaning roller, causing an overly wet floor.

[0098] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 7 The cleaning roller 3 is rotatably mounted at the front end of the cleaning head housing 1. The cleaning roller 3, the squeezing roller 2, and the two side walls of the cleaning head housing 1 are detachably connected. The squeezing roller 2 is eccentrically positioned rearward relative to the cleaning roller 3. After the squeezing roller 2 squeezes the cleaning roller 3, the wastewater flowing out can be contained in the enclosed water-guiding space A. The cleaning roller 3 includes a cleaning roller body 31. The surface of the cleaning roller body 31 is provided with a sponge layer as in conventional technology, which can be used to absorb garbage. The inner layer of the cleaning roller body 31 is provided with a rotating shaft (not shown in the figure). The drive motor 11 drives the rotating shaft to rotate, thereby realizing the rotation of the cleaning roller body 31. The drive motor 11 can be set inside the cleaning roller body 31 and coupled to the rotating shaft to drive the cleaning roller body 31 to rotate, which can save space and reduce the size of the cleaning tool.

[0099] A power mechanism can be installed inside the cleaning head housing 1 to rotate the squeezing roller 2, or no power mechanism can be installed, and the squeezing roller 2 rotates by the friction of the cleaning roller body 31. When a power mechanism is installed, in the first case, the squeezing roller 2 and the cleaning roller body 31 rotate in the same direction. When the linear velocity of the elastic contact point between the surface of the squeezing roller 2 and the surface of the cleaning roller body 31 is less than the linear velocity of the elastic contact point between the surface of the cleaning roller body 31 and the surface of the squeezing roller 2, the water squeezing effect is better than when the squeezing roller 2 does not rotate. In the second case, the squeezing roller 2 and the cleaning roller body 31 rotate in the same direction, and the linear velocity of the elastic contact point between the surface of the squeezing roller 2 and the surface of the cleaning roller body 31 is greater than the linear velocity of the elastic contact point between the surface of the cleaning roller body 31 and the surface of the squeezing roller 2. Compared with the first case, the water squeezing effect is better. In the third case, the rotation direction of the squeezing roller 2 is opposite to the rotation direction of the cleaning roller body 31. Compared with the first and second cases, this is the most energy-efficient, noiseless, and has the best water squeezing effect.

[0100] When using, please refer to Figure 5 The cleaning roller body 31 rotates clockwise and rolls on the surface to be cleaned (not shown in the figure). Since the sponge layer of the cleaning roller body 31 contains an appropriate amount of clean water, it can absorb the garbage on the surface to be cleaned. The garbage and clean water mix to form wastewater. When the area of ​​the cleaning roller body 31 that absorbs garbage rotates to the squeezing roller 2, the squeezing roller 2 squeezes it and squeezes out all the wastewater in the sponge layer of the cleaning roller body 31. The outflowing wastewater can be contained in the closed water guiding space A. When the sponge layer of the cleaning roller body 31 is in an unsaturated state, a gap may be formed between the bottom end of the water-collecting strip 4b of the decontamination device X and the cleaning roller body 31, causing the closed water guiding space A to be in an unclosed state, resulting in water seepage. However, since the closed water guiding space A is located at the rear and upper part of the cleaning roller body 31, the seeping wastewater will drip onto the rear cleaning roller or drip into the cleaning head housing 1, and will not drip directly onto the surface to be cleaned as in the prior art, thus reducing the cleaning efficiency.

[0101] Furthermore, when the sponge layer of the cleaning roller body 31 is in an unsaturated state, a gap may form between the squeezing roller 2 and the cleaning roller body 31. Since the closed water guiding space A is located at the rear and upper part of the cleaning roller body 31, the seeping sewage will flow out from the left side along the cleaning roller body 31 under the action of gravity and drip into the cleaning head housing 1 or flow into the closed water guiding space A, instead of dripping onto the surface to be cleaned and reducing the cleaning efficiency.

[0102] In one specific embodiment, see [reference] Figures 5 to 10 The cleaning device X also includes a fixing component 4c; the water-collecting strip 4b and the guard roller plate 4a are both detachably connected to the fixing component 4c. Since the water-collecting strip 4b and the guard roller plate 4a are always in elastic contact with the cleaning roller body 31 and the squeezing roller 2 respectively, they need to be replaced when they wear down to a certain extent. The design that the water-collecting strip 4b and the guard roller plate 4a are detachably connected to the fixing component 4c makes it convenient for users to quickly replace the corresponding parts when needed.

[0103] In one specific embodiment, the fixing member 4c connects to the two side walls of the cleaning head housing 1. The fixing member 4c is integrally formed with the cleaning head housing 1, which eliminates the trouble of having to install the fixing member 4c onto the cleaning head housing 1 in advance during the manufacturing of cleaning tools, thus improving the manufacturing efficiency of cleaning tools. On the other hand, since the fixing member 4c is detachably connected to the water-retaining strip 4b and the protective roller plate 4a, which elastically abut against the cleaning roller body 31 and the squeezing roller 2, which are constantly running during operation, the integral formation of the fixing member 4c with the cleaning head housing 1 also avoids possible loosening between the fixing member 4c and the cleaning head housing 1, thus improving the stability of the cleaning tool during operation.

[0104] In one specific embodiment, see [reference] Figure 6 , Figure 7The fastener 4c is detachably connected to both side walls of the cleaning head housing 1. The connection between the fastener 4c and the cleaning head housing 1 can be detachable, such as by threaded connection or snap-fit ​​connection, for easy installation and maintenance.

[0105] In one specific embodiment, see [reference] Figure 5 , Figures 7 to 9 The fixing component 4c has at least two fixing grooves (not shown in the figure); the water-collecting strip 4b and the guard roller plate 4a each include a snap-fit ​​end (not shown in the figure) and a free end (not shown in the figure). The free end of the water-collecting strip 4b is provided with a water guide tip 4b1, and the free end of the guard roller plate 4a elastically abuts against the extrusion roller 2; the snap-fit ​​end of the water-collecting strip 4b and the guard roller plate 4a is provided with at least one fixing ridge (not shown in the figure), and the water-collecting strip 4b and the guard roller plate 4a are detachably snapped into the fixing groove through the fixing ridge. Specifically, multiple T-shaped fixing grooves (not shown in the figure) can be provided on the fixing component 4c, and T-shaped fixing ridges (not shown in the figure) are fixed on the water-collecting strip 4b and the guard roller plate 4a. By snapping the T-shaped fixing ridges into the T-shaped fixing grooves, the water-collecting strip 4b and the guard roller plate 4a are connected to the fixing component 4c, which facilitates installation and disassembly. The bottom end of the water-collecting strip 4b abuts against the cleaning roller body 31. To ensure a complete fit between the water-collecting strip 4b and the cleaning roller body 31, the end face of the bottom end of the water-collecting strip 4b can be set to an arc shape that matches the surface of the cleaning roller body 31. The free end of the guard roller plate 4a abuts against the extrusion roller body 21. Of course, the T-shaped fixing groove can also be a trapezoidal, dovetail, or other groove shape that can achieve unidirectional sliding, and the T-shaped fixing ridge can also be a trapezoidal, dovetail, or other strip shape that can achieve unidirectional sliding; these will not be elaborated further here.

[0106] In one specific embodiment, the engaging ends of the water-collecting strip 4b and the guard roller plate 4a are made of rigid material, while the free ends of the water-collecting strip 4b and the guard roller plate 4a are made of elastic material. Making the engaging ends of the water-collecting strip 4b and the guard roller plate 4a of rigid material improves the stability of their engagement within the fixing groove of the fixing member 4c. Making the free end of the water-collecting strip 4b of elastic material enhances the flexibility of its elastic contact with the cleaning roller body 31, preventing large, hard particles of debris rolled up by the cleaning roller body 31 from scratching the contact point of the free end of the water-collecting strip 4b. Making the free end of the guard roller plate 4a of elastic material allows it to rotate around the engaging end of the guard roller plate 4a in a direction away from the squeezing roller, facilitating the cleaning of the water-guiding space, the contact point, and the surface of the squeezing roller.

[0107] In one specific embodiment, the lower surface of the water-collecting strip 4b abuts against the cleaning roller body 31; against the rotation direction of the cleaning roller 3, the interference fit between the water-collecting strip 4b and the cleaning roller body 31 gradually decreases downwards from the water guide tip 4b1. Specifically, as... Figure 5As shown, after the extrusion roller 2 extrudes the cleaning roller body 31 at point M, the compression at point M is the point with the greatest compression among all positions around the entire circumference of the cleaning roller body 31. Figure 5 In the process, the outer surface of the cleaning roller body 31 gradually recovers to a free state in both clockwise and counterclockwise directions starting from point M. In other words, the compression on the outer surface of the cleaning roller body 31 gradually decreases in both clockwise and counterclockwise directions starting from point M. The elastic contact point between the water guide tip 4b1 and the outer surface of the cleaning roller body 31 is the first contact point encountered in the counterclockwise direction starting from point M. In other words, the cleaning roller rotates clockwise as the cleaner moves forward to clean the surface to be cleaned. In order to allow the outer surface of the cleaning roller body 31 to have a process of being gradually pressed, the first point of the cleaning device X encountered by the outer surface of the cleaning roller body 31 when rotating clockwise is the lowest point of the lower surface of the water support strip 4b. As the cleaning roller body 31 continues to rotate clockwise, the interference of the lower surface of the water support strip 4b gradually increases until the outer surface of the cleaning roller body 31 leaves the water guide tip 4b1. The interference fit between the water-collecting strip 4b and the cleaning roller body 31 gradually decreases downwards from the water guide tip 4b1. This allows the pressure on the outer surface of the cleaning roller body 31 to gradually increase during clockwise rotation, preventing the wastewater contained within the cleaning roller body 31 just after leaving the water guide tip 4b1 from being squeezed out. When the cleaning roller body 31 continues to rotate clockwise and encounters the squeezing roller 2, the wastewater squeezed out by the squeezing roller 2 continues to flow along a section of the surface of the cleaning roller body 31 and along the upper surface of the water guide tip 4b1 into the closed water guide space A.

[0108] In one specific embodiment, see [reference] Figure 5 , Figure 8 and Figure 10The free end of the guard roller plate is provided with multiple contact points 4a1, which abut against the extrusion roller 2 to clean the surface of the extrusion roller 2. When cleaning with the cleaning roller body 31, small debris such as hair will adhere to the cleaning roller body 31 until the cleaning roller body 31 rotates to contact the extrusion roller body 21. The extrusion roller body 21 peels these small debris particles off the cleaning roller body 31. Some of them enter the closed water guiding space A, while others may adhere to the surface of the extrusion roller body 21. As the extrusion roller body 21 rotates to contact the contact points 4a1, the contact points 4a1 peel these debris off the extrusion roller body 21. As the cleaning roller body 31 and the squeezing roller 2 rotate simultaneously, fine particles of debris or hair that are rolled up from the surface to be cleaned by the cleaning roller body 31 may become entangled on the squeezing roller 2 again. The contact points 4a1 evenly distributed on the lower surface of the free end of the guard roller plate 4a can further block the fine particles of debris or hair outside the cleaning device X, preventing the fine particles of debris or hair from "locking" the squeezing roller 2. At the same time, it is also convenient for the user to clean the fine particles of debris or hair that are blocked outside the free end of the guard roller plate in a timely manner.

[0109] Furthermore, the contact point 4a1 is made of wear-resistant material, which can further improve the wear resistance of the contact point 4a1 during continuous sliding friction on the surface of the extrusion roller 2 and extend the service life of the guard roller plate 4a.

[0110] In one specific embodiment, see [reference] Figure 11 , Figure 12 and Figure 13 The extrusion roller 2 includes an extrusion roller body 21, a bearing 22 and an elastic support shaft 23 located at one end of the extrusion roller body 21, and an inner cavity (not shown in the figure) is provided inside the extrusion roller body 21. The bearing 22 covers the opening of the inner cavity and can be threadedly connected to the extrusion roller body 21. The elastic support shaft 23 includes a locking member 231 and a spring 232. Part of the locking member 231 is limited to the inner cavity by the bearing 22. The locking member 231 is elastically connected to the inner wall of the inner cavity through the spring 232. The locking member 231 extending out of the inner cavity can be locked with the cleaning head housing 1 (not shown in the figure). In use, pressing the extrusion roller body 21 compresses the spring 232 and drives the locking member 231 to move towards the inner cavity, releasing it from the cleaning head housing 1. The extrusion roller body 21 can then be easily removed from the cleaning head housing 1.

[0111] In one specific embodiment, see [reference] Figure 5 The central axis of the extrusion roller body 21 is offset from the central axis of the cleaning roller body 31 in the vertical direction by 1° to 5°, that is... Figure 5The angle θ ranges from 1° to 5°. The contact point between the squeeze roller body 21 and the cleaning roller body 31 is M, and the contact point between the cleaning roller body 31 and the surface to be cleaned is N. When the squeeze roller body 21 rotates clockwise to point M, wastewater is squeezed out by the squeeze roller body 21, and the rotation continues. The cleaning roller body 31 still contains a small amount of unsqueezed clean water in the area to the right of points M to N. When it rotates to point N, the surface to be cleaned is then cleaned. (See reference...) Figure 14 If the contact point between the cleaning roller body 31 and the surface to be cleaned is N, and the highest point of the cleaning roller body 31 is P, and the angle θ exceeds 5°, the cleaning roller body 31 will still contain a small amount of unsqueezed water in the area to the right of the points M to N. Due to gravity, the water between the points M and P will accumulate excessive water in the wedge-shaped space (not shown in the figure) formed by the surfaces of the squeezing roller body 21 and the cleaning roller body 31. The part of the cleaning roller body 31 soaked by the water accumulated in the wedge-shaped space will be in a supersaturated state in terms of its water absorption capacity. When it continues to rotate clockwise to the point N to clean the surface to be cleaned, water stains will be generated, and water may even accumulate on the surface to be cleaned, causing slipperiness and posing a certain safety hazard. Moreover, the cleanliness requirements will not be met.

[0112] The applicant has conducted experiments, such as Figure 14As shown, when the cleaning roller body 31 rotates at an angular velocity of 60 RPM (revolutions per minute), under the action of inertia, when the angle θ is 1°, the wastewater squeezed out by the squeezing roller body 21 at point M can just flow out along the surface of the cleaning roller body 31, which is in a supersaturated state, under the action of gravity. At this time, the wedge-shaped space formed by the surface of the squeezing roller body 21 and the surface of the cleaning roller body 31 does not have any excess clean water. When the angle θ is 5°, more wastewater squeezed out by the squeezing roller body 21 at point M can flow out along the surface of the cleaning roller body 31, which is in a supersaturated state, under the action of gravity. At this time, the wedge-shaped space formed by the surface of the squeezing roller body 21 and the surface of the cleaning roller body 31 just begins to have clean water precipitate out. That is to say, the cleaning roller body 31 near point M is in a supersaturated state. When it continues to rotate clockwise to point N to clean the surface to be cleaned, water stains will be generated, and even water accumulation will form on the surface to be cleaned. Of course, when the cleaning roller body 31 rotates at a higher speed, the squeezed-out wastewater is more likely to form a "water film" on the surface of the cleaning roller body 31 due to inertia. When the cleaning roller body 31 rotates at an angular velocity of 150 RPM, under the action of inertia, when the angle θ is 1°, the sewage squeezed out by the squeezing roller body 21 at point M can just flow out along the surface of the cleaning roller body 31 in a supersaturated state under the action of gravity. At this time, the wedge-shaped space formed by the surface of the squeezing roller body 21 and the surface of the cleaning roller body 31 does not have any excess clean water. When the angle θ is 5°, more sewage squeezed out by the squeezing roller body 21 at point M can flow out along the surface of the cleaning roller body 31 in a supersaturated state under the action of gravity. At this time, the wedge-shaped space formed by the surface of the squeezing roller body 21 and the surface of the cleaning roller body 31 just begins to have clean water separated. That is to say, the cleaning roller body 31 near point M is in a supersaturated state. When it continues to rotate clockwise to point N to clean the surface to be cleaned, water stains will be generated, and even water accumulation will form on the surface to be cleaned.

[0113] Furthermore, the surface of the extrusion roller body 21 is a flexible sponge layer, while the material of the abutment strip is preferably a rigid material, allowing the abutment strip to scrape the extrusion roller body 21 for better cleaning. To facilitate the removal of debris, apart from the abutment strip being made of a rigid material, the remaining parts of the cleaning component 41 can be made of a flexible material with a certain degree of elasticity. When it is necessary to clean the debris that has peeled off the abutment strip, the cleaning component 41 can be directly moved to move the abutment strip away from the extrusion roller body 21 for cleaning, which is convenient and quick.

[0114] The applicant's Chinese invention patents CN211834240U and CN211834241U both disclose a squeezing roller rotatably fixed to the housing of a cleaning head. The squeezing roller can be equipped with a power mechanism for active water squeezing. A first motor can be fixed to the housing of the cleaning head, connected to the squeezing roller, driving it to rotate, thus improving the water squeezing effect on the roller. However, a separate drive motor is required to rotate the roller. While the first motor achieves the purpose of squeezing roller rotation, it occupies housing space, increases housing weight, and also increases cost.

[0115] To solve the above problems, see Figure 4 and Figure 7 Only one drive motor 11 is installed inside the tractor housing 1, which is connected to the cleaning roller body 31. A transmission mechanism is also installed connected to the drive motor 11. The transmission mechanism is connected to the squeeze roller body 21. Here, the transmission mechanism can be a gear transmission mechanism, chain transmission mechanism, or other conventional technology. When the drive motor 11 drives the cleaning roller body 31 to rotate, it drives the transmission mechanism to drive the cleaning roller body 31 and the squeeze roller body 21 to rotate simultaneously, thereby reducing the weight of the cleaning tool and saving costs.

[0116] In one specific embodiment, a brush 5 and a waste bin 9 located below the brush 5 are provided inside the tractor housing 1. (See reference...) Figure 5 The brush 5 is specifically located on the left side of the cleaning roller body 31. The brush 5 abuts against the cleaning roller body 31 to form an interference fit, thereby cleaning the surface of the cleaning roller body 31. During use, the cleaning roller body 31 rolls on the surface to be cleaned. Because the surface of the cleaning roller body 31 is provided with a flexible sponge layer, the debris on the surface to be cleaned causes the sponge layer to be compressed and deformed. The sponge layer wraps the debris by deformation, causing the debris to separate from the surface to be cleaned. The debris rotates with the cleaning roller body 31 and leaves the surface to be cleaned. When the cleaning roller body 31 rotates to contact the brush 5, the brush 5 brushes the cleaning roller body 31 to clean the debris wrapped by the cleaning roller body 31, ensuring the cleanliness of the cleaning roller body 31. The debris that has been brushed off falls into the debris box 9 under gravity. The debris box 9 collects this debris, preventing it from scattering around in the tractor housing 1 and affecting the normal operation of other parts, and also making it convenient for users to clean up the debris. Similarly, in order to make the brush 5 rotate, the brush 5 is connected to the transmission mechanism. When the drive motor 11 rotates, it can drive the transmission mechanism and make the brush 5 rotate.

[0117] In one specific embodiment, see [reference] Figure 4 and Figure 7One end of the drive motor 11 is equipped with an end-torsion assembly 32. The transmission mechanism is a gear set 6, which includes a drive wheel 61 that engages with the end-torsion assembly 32 and a first driven wheel set 62 that meshes with the drive wheel 61. The first driven wheel set 62 includes a first driven wheel (not shown in the figure), which meshes with the drive wheel 61 and is connected to the brush 5. In use, the drive motor 11 rotates, which in turn drives the cleaning roller body 31 to rotate, and simultaneously drives the drive wheel 61 to rotate. The drive wheel 61 drives the first driven wheel to rotate, and the first driven wheel drives the brush 5 to rotate, thereby allowing the brush 5 to rotate and clean the surface of the cleaning roller body 31.

[0118] In another embodiment, see Figure 4 and Figure 7 The gear set 6 includes a driving wheel 61 that engages with the end torque assembly 32 and a first driven wheel set 62 that meshes with the driving wheel 61. The first driven wheel set 62 includes at least two first driven wheels arranged sequentially, wherein adjacent first driven wheels mesh with each other, and the first driven wheel at the first end meshes with the driving wheel 61, while the first driven wheel at the tail end is connected to the brush 5. The advantage of setting multiple first driven wheels is that the transmission ratio can be increased by sequentially increasing the number of teeth on each first driven wheel, so that the rotation speed of the brush 5 is greater than the rotation speed of the cleaning roller body 31. The brush 5 can clean the cleaning roller body 31 at a faster frequency, achieving a better cleaning effect and further ensuring the cleanliness of the cleaning roller body 31.

[0119] For details, please refer to Figure 4 and Figure 7 An embodiment of a first driven wheel assembly 62 comprising two first driven wheels is provided. Figure 4 and Figure 7 In the design, the first driven wheel on the right meshes with the driving wheel 61, while the first driven wheel on the left is connected to the brush 5. The first driven wheel on the left has more teeth than the first driven wheel on the right, which increases the transmission ratio and thus increases the rotational speed of the brush 5, ensuring the cleanliness of the cleaning roller body 31. Furthermore, considering the rotation direction, the driving wheel 61 rotates clockwise with the drive motor 11, the first driven wheel on the right rotates counterclockwise, and the first driven wheel on the left drives the brush 5 to rotate clockwise. Therefore, when there are at least two first driven wheels, preferably an even number, the rotation direction of the brush 5 is clockwise. (See reference...) Figure 5 Since the brush 5 rotates clockwise, when the brush 5 cleans the cleaning roller body 31, the brush 5 will provide a downward pushing force on the garbage being cleaned so that the garbage enters the garbage box 9.

[0120] In one specific embodiment, see [reference] Figure 4 and Figure 7The gear set 6 also includes a second driven gear set 63, which includes a second driven gear (not shown in the figure). The second driven gear meshes with the driving gear 61 and is connected to the extrusion roller body 21. For details, please refer to [reference needed]. Figure 12 and Figure 13 A gear connecting part 24 is provided at the other end of the extrusion roller body 21 relative to the bearing 22 and the elastic support shaft 23. The gear connecting part 24 includes a fixing part 241 connected to the extrusion roller body 21 and a connecting part 242 connected to the fixing part 241. The connecting part 241 is connected to the second driven wheel. In use, the drive motor 11 rotates, which drives the cleaning roller body 31 to rotate, and at the same time drives the drive wheel 61 to rotate. The drive wheel 61 drives the second driven wheel to rotate, and the second driven wheel drives the extrusion roller body 21 to rotate, so as to clean the surface of the cleaning roller body 31. At the same time, from the perspective of rotation angle, the drive wheel 61 and the cleaning roller body 31 both rotate clockwise, and the second driven wheel meshing with the drive wheel 61 drives the extrusion roller body 21 to rotate counterclockwise, which meets the third situation mentioned above. This is the most energy-efficient, noiseless, and has a better squeezing effect.

[0121] In another embodiment, see Figure 4 and Figure 7 The gear set 6 also includes a second driven gear set 63, which includes at least two second driven gears arranged in sequence. Two adjacent first driven gears mesh with each other, and the second driven gear at the first end meshes with the driving gear 61, while the second driven gear at the tail end is connected to the extrusion roller body 21.

[0122] For details, please refer to Figure 4 and Figure 7 An embodiment of the second driven wheel group 63, comprising three second driven wheels, is provided. The rightmost second driven wheel meshes with the driving wheel 61, and the leftmost second driven wheel is connected to the squeeze roller body 21, with another second driven wheel meshing between them. From a rotational perspective, the driving wheel 61 and the cleaning roller body 31 rotate clockwise, the rightmost second driven wheel rotates counterclockwise, the middle second driven wheel rotates clockwise, and the leftmost second driven wheel drives the squeeze roller body 21 to rotate counterclockwise. This conforms to the third scenario mentioned above, which is the most energy-efficient, noiseless, and provides better water-squeezing effect. Therefore, when the number of second driven wheels is at least two, the number is preferably odd, ensuring that the squeeze roller body 21 rotates counterclockwise. Simultaneously, by sequentially increasing the number of teeth on the second driven wheels, the transmission ratio can be increased, thereby increasing the rotational speed of the squeeze roller body 21 and improving the water-squeezing effect on the cleaning roller body 31.

[0123] In one specific embodiment, see [reference] Figure 5The cleaning device also includes a detachable shovel 7 located between the trash can 9 and the cleaning roller body 31. The right side of the detachable shovel 7 is arc-shaped, matching and abutting against the surface of the cleaning roller body 31. In use, the cleaning roller body 31 rolls on the surface to be cleaned. The trash is wrapped in the sponge layer of the cleaning roller body 31. The trash leaves the surface to be cleaned and is squeezed by the detachable shovel 7, continuing to rotate with the cleaning roller body 31. The detachable shovel 7 can prevent the trash from falling off the cleaning roller body 31 under gravity and falling back onto the surface to be cleaned, reducing cleaning efficiency. Then it rotates to the brush 5, and the trash is brushed into the trash can 9.

[0124] In one specific embodiment, see [reference] Figure 5 The cleaning device also includes a waste guide 8 disposed between the removable shovel 7 and the waste container 9. The waste guide 8, or the upper surface of the waste guide 8 and the removable shovel 7, forms an inclined waste guide area (not shown in the figure), which is connected to the waste container 9. The waste guide area is used to guide waste into the waste container 9, and because it is inclined, the waste can quickly slide from the waste guide area into the waste container 9 under the action of gravity, avoiding excessive waste from causing blockage and affecting the normal operation of the brush 5 or the cleaning roller body 31.

[0125] In one specific embodiment, see [reference] Figure 5 and Figure 6 The tractor housing 1 contains a water tank 10 that integrates a sewage chamber (not shown in the figure) and a clean water chamber (not shown in the figure). A sewage channel (not shown in the figure) and a clean water channel (not shown in the figure) are also provided within the tractor housing 1. The clean water channel provides clean water to the cleaning roller body 31 located in the right-hand area from point M to point N, ensuring the cleaning roller body 31 has an appropriate amount of clean water for absorbing debris from the surface to be cleaned. The sewage channel communicates with the enclosed water tank space A, used to transport the sewage stored in the enclosed water tank space A back to the sewage chamber.

[0126] In this embodiment, the cleaning roller body 31 rolls on the surface to be cleaned. The sponge layer on the surface of the cleaning roller body contains an appropriate amount of water to clean the surface. For dry waste, the dry waste compresses and deforms the sponge layer, which wraps the dry waste in the deformation, causing the dry waste to separate from the surface to be cleaned. The dry waste rotates with the cleaning roller body 31, leaving the surface to be cleaned. It is then squeezed by the removable shovel 7 and continues to rotate with the cleaning roller body 31. When it passes the removable shovel 7, the sponge layer on the surface of the cleaning roller body 31 returns to its original shape due to the loss of pressure from the removable shovel 7. Some larger dry waste particles are released from the sponge layer and enter the waste box 9 from the waste guide area. Some dry waste that cannot be released is combed by the brush 5 and falls into the waste guide area, entering the waste box 9 from the waste guide area.

[0127] For debris such as dust or hair that cannot be easily removed by the brush 5, the dust will mix with the clean water in the sponge layer of the cleaning roller body 31 to form wastewater, which will not be stirred up to prevent secondary pollution. The wastewater is absorbed into the sponge layer of the cleaning roller body 31 until the cleaning roller body 31 rotates to contact the squeeze roller body 21. Under the pressure of the squeeze roller body 21, the wastewater flows out from the sponge layer of the cleaning roller body 31 into the closed water tank space A. Small particles such as hair will adhere to the sponge layer of the cleaning roller body 31 until the cleaning roller body 31 rotates to contact the squeeze roller body 21. The squeeze roller body 21 peels these small particles off the sponge layer of the cleaning roller body 31. Some of them enter the closed water tank space A, and some may adhere to the surface of the squeeze roller body 21. As the squeeze roller body 21 rotates to contact the abutment strip, the abutment strip peels these particles off the squeeze roller body 21.

[0128] For wet waste, since the sponge layer of the cleaning roller body 31 contains an appropriate amount of clean water, it can absorb the wet waste and squeeze it out of the cleaning roller body 31 by the squeezing roller body 21 and flow into the closed water tank space A. It is then carried into the sewage chamber of the water tank 10 through the sewage channel. The wet waste will not enter the garbage box 9, thus achieving the purpose of separating dry and wet waste.

[0129] For sticky wet waste, which is a mixture of liquid and solid, the liquid is processed in the same way as the wet waste process described above. The liquid is drawn into the sponge layer of the cleaning roller body 31 and squeezed into the closed water tank space A by the squeezing roller body 21. This will not be described in detail here. The solid is processed in the same way as the dry waste process described above, and it will eventually enter the waste box 9. This will not be described in detail here either.

[0130] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the content of this specification should be included within the protection scope of the present invention.

Claims

1. A decontamination device, characterized in that, The cleaning head housing is mounted on the upper part of the cleaning head housing and elastically abuts against the cleaning roller for scrubbing the floor. It includes a squeezing roller and a guard roller plate. The front end of the cleaning head housing is rotatably provided with a cleaning roller that is detachably connected to the cleaning head housing. The squeezing roller rolls against the cleaning roller at a position that is eccentrically positioned rearward relative to the rotation direction of the cleaning roller. The guard roller plate is located on the rear side of the squeezing roller. The end of the guard roller plate close to the squeezing roller slides and elastically abuts against the squeezing roller above the squeezing roller to prevent fine particles of debris or hair rolled up by the squeezing roller from getting entangled on the squeezing roller.

2. The decontamination device as described in claim 1, characterized in that, It also includes a water-collecting strip, which is located on the rear side of the squeezing roller, with the bottom end of the water-collecting strip abutting against the cleaning roller; Preferably, the cleaning device also includes a fixing member, which is connected to the two side walls of the cleaning head housing, and the water-collecting strip and the guard roller plate are detachably connected to the fixing member.

3. The decontamination device as described in claim 2, characterized in that, The fastener is detachably connected to the two side walls of the cleaning head housing.

4. The decontamination device as described in claim 2, characterized in that, The fixing component is integrally formed with the cleaning head housing; Preferably, the fastener has at least two fixing grooves; Both the water-supporting strip and the guard roller plate include a snap-fit ​​end and a free end. The free end of the water-supporting strip is provided with a water guide tip, and the free end of the guard roller plate is in elastic contact with the extrusion roller. Preferably, both the water-supporting strip and the guard roller plate have at least one fixing ridge at their snap-fit ​​ends, and the water-supporting strip and the guard roller plate are detachably snapped into the fixing groove through the fixing ridge; Preferably, the snap-fit ​​ends of the water-supporting strip and the guard roller plate are made of rigid material, while the free ends of the water-supporting strip and the guard roller plate are made of elastic material.

5. The decontamination device as described in claim 4, characterized in that, The free end of the guard roller plate can be flipped around the snap-fit ​​end of the guard roller plate in the direction away from the extrusion roller; Alternatively, the lower surface of the water-supporting strip abuts against the cleaning roller; against the direction of rotation of the cleaning roller, the interference fit between the water-supporting strip and the cleaning roller gradually decreases downward from the water guide tip.

6. The decontamination device as described in claim 4, characterized in that, The free end of the guard roller plate is provided with multiple contact points, which abut against the top of the extrusion roller.

7. The decontamination device as described in claim 6, characterized in that, The lower surface of the free end of the guard roller plate is evenly distributed with contact points; Alternatively, the contact points may be made of wear-resistant materials.

8. The decontamination device as described in claim 2, characterized in that, The extrusion roller is detachably connected to the two side walls of the cleaning head housing.

9. The decontamination device according to any one of claims 4-8, characterized in that, The guide tip of the water-collecting strip near the squeezing roller elastically abuts against the cleaning roller, guiding the sewage to flow away along the upper surface of the water-collecting strip; Preferably, the lower surface of the guard roller plate, the upper surface of the water-supporting strip, the squeeze roller, and the cleaning roller enclose a closed water-guiding space.

10. The decontamination device according to any one of claims 1-9, characterized in that, The central axis of the extrusion roller is offset from the central axis of the cleaning roller by 1° to 5° in the vertical direction.

11. The decontamination device as described in claim 2, characterized in that, The cleaning roller includes a cleaning roller body, and the surface of the cleaning roller body is provided with a sponge layer. When the sponge layer of the cleaning roller body is in an unsaturated state, a gap is formed between the bottom end of the water-collecting strip and the cleaning roller body, and the seeping sewage drips onto the left side of the cleaning roller body or drips into the cleaning head housing. Preferably, the extrusion roller rotates by relying on the friction of the cleaning roller body.

12. The decontamination device as described in claim 2, characterized in that, The extrusion roller includes an extrusion roller body and a bearing and an elastic support shaft located at one end of the extrusion roller body, and an inner cavity is provided inside the extrusion roller body; when in use, pressing the extrusion roller body releases the elastic support shaft from the cleaning head housing, and the extrusion roller body can be easily removed from the cleaning head housing; Preferably, the decontamination device further includes: The drive motor is located inside the cleaning head housing and is connected to the cleaning roller body; The brush is located inside the cleaning head housing and abuts against the cleaning roller body to form an interference fit. The transmission mechanism is located inside the cleaning head housing and is connected to the drive motor to drive the cleaning roller, the squeeze roller and the brush to rotate simultaneously. Preferably, one end of the drive motor is provided with an end torque assembly, and the transmission mechanism includes: The drive wheel engages with the end torque assembly; The first driven gear set meshes with the driving gear. The first driven wheel assembly includes a first driven wheel, which meshes with the driving wheel and is connected to the brush; or, The first driven wheel assembly includes at least two first driven wheels arranged in sequence, with adjacent first driven wheels meshing with each other, and the first driven wheel at the head end meshing with the driving wheel, and the first driven wheel at the tail end connected to the brush.

13. The decontamination device as described in claim 12, characterized in that, The transmission mechanism also includes a second driven wheel set; The second driven wheel assembly includes a second driven wheel, which meshes with the driving wheel and is connected to the squeeze roller; or, The second driven wheel group includes at least two second driven wheels arranged in sequence, wherein two adjacent first driven wheels mesh with each other, and the second driven wheel at the first end meshes with the driving wheel, and the second driven wheel at the tail end is connected to the extrusion roller.

14. The decontamination apparatus according to any one of claims 12-13, characterized in that, The bearing is located at one end of the extrusion roller body and covers the opening of the inner cavity; the elastic support shaft is located at one end of the extrusion roller body. The elastic support shaft includes a locking element and a spring. Part of the locking element is limited to the inner cavity by the bearing. The locking element is elastically connected to the inner wall of the inner cavity through the spring. The locking element extending out of the inner cavity can be locked with the cleaning head housing. Preferably, during use, pressing the squeezing roller body compresses the spring and drives the locking element to move towards the inner cavity, thus releasing it from the cleaning head housing; Preferably, a gear connection portion is provided at the other end of the extrusion roller body relative to the bearing and the elastic support shaft, the gear connection portion comprising: The fixing part is connected to the extrusion roller body; The connecting part is connected to the fixed part and also to the second driven wheel; In use, the drive motor rotates, causing the cleaning roller body to rotate, which in turn drives the drive wheel to rotate. The drive wheel then drives the second driven wheel to rotate, and the second driven wheel in turn drives the squeezing roller body to rotate.

15. A cleaning tool, characterized in that, The device includes a cleaning head housing, a brush disposed inside the cleaning head housing, a cleaning roller, a drive motor for driving the cleaning roller to rotate, a transmission mechanism connected to the drive motor, and a decontamination device as described in any one of claims 1-14 disposed on the upper part of the cleaning head housing. The transmission mechanism is connected to the brush and the extrusion roller; the brush and the cleaning roller are interference-fitted. The drive motor can drive the transmission mechanism to simultaneously rotate the brush and the cleaning roller.

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