CN111166251B

CN111166251B - Scraper strip assembly, cleaning head and cleaning tool including the scraper strip assembly

Info

Publication number: CN111166251B
Application number: CN202010075241.8A
Authority: CN
Inventors: 邓常
Original assignee: Dishe Intelligent Technology Wuhan Co Ltd
Current assignee: Dishe Intelligent Technology Wuhan Co Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2025-01-10
Anticipated expiration: 2040-01-22
Also published as: CN111166251A; WO2021147206A1; CN119769944A; CN119769945A

Abstract

The present disclosure relates to a scraper bar assembly and a cleaning head and a cleaning tool including the scraper bar assembly. The scraper bar assembly includes: a long scraper bar bracket; a friction portion formed by the scraper bar bracket extending in the width direction; a drainage portion located at both ends of the scraper bar bracket, extending along the height direction of the scraper bar bracket, and used to guide the water flow. The cleaning head and the cleaning tool include a shell, and the scraper bar assembly and the drum are fixed on the shell. The scraper bar assembly disclosed in the present disclosure can effectively clean the garbage attached to the surface of the drum, separate dry and wet garbage, expand the application range of the cleaning tool, and improve the anti-overflow function of the cleaning head, so that the water storage capacity of the sink can be increased, the drum can be cleaned more thoroughly, and the floor can be cleaned more cleanly.

Description

Scraping strip assembly and cleaning head and cleaning tool comprising same

Technical Field

The present disclosure relates generally to a wiper strip assembly and a cleaning head, cleaning tool including the wiper strip assembly, and in particular to a cleaning tool for cleaning dry and wet debris on flat floors, and mixed debris including viscous wet debris.

Background

Usually people clean floors, and the tools used are brooms, mops, floor wipers and the like, and the tools mainly rely on manual operation of people to complete cleaning work. With the progress of technology, the requirements of people on floor cleaning tools are gradually increased.

Firstly, dust collectors have appeared, the working principle of which is "air dust circulation", i.e. by means of power supply, by generating negative pressure to suck up dust, dust etc. on the ground. However, due to the limitation of the working principle, the dust collector cannot clean some garbage and stains firmly attached to the ground, and once liquid enters the dust collector, the dust collector is easily damaged. New floor cleaners are now emerging. The new floor cleaner drives a cleaning cylinder (cleaning roller) to wipe the floor through the operation of a motor, and the cleaning cylinder usually adopts a sponge cylinder or scouring pad. Meanwhile, the floor cleaner is internally provided with a water supply system and a water tank to clean the cleaning cylinder, so that the floor is perfectly cleaned. The washed sponge barrel will normally have water in it by the wringer, otherwise the water will flow to the ground when the sponge barrel is squeezed against the ground.

However, after the garbage contacts with the drum, the garbage is easily attached to the surface of the drum, so that the dry garbage is brought into the sewage collection box, and the mixed garbage comprising dry garbage, wet garbage, soup (syrup, tomato sauce and the like) and other sticky garbage cannot be cleaned and collected.

The matters in the background section are only those known to the public and do not, of course, represent prior art in the field.

SUMMARY

In view of at least one of the drawbacks of the prior art, the present disclosure provides a wiper strip assembly, a cleaning head and a cleaning tool including the wiper strip assembly, which can separate dry and wet garbage and treat sticky garbage.

The present disclosure provides a wiper strip assembly comprising:

the long strip scraping support is used for being fixed on the cleaning head;

the friction part is formed by extending the scraping strip bracket in the width direction and is used for scraping garbage on the roller;

And the drainage parts are positioned at two ends of the scraping strip support, extend along the height direction of the scraping strip support and are used for guiding water flow.

According to one aspect of the disclosure, the edge of the friction portion is toothed.

According to one aspect of the disclosure, the scraper bar support is provided with a plurality of alignment blocks facing away from the friction part and the drainage part.

The friction part is made of silica gel.

The Shore hardness A of the friction part is 40-80.

The drainage part is made of silica gel.

The Shore hardness A of the drainage part is 40-80.

The Shore hardness D of the drainage part is 70-90, and the drainage part is fixed at the two ends of the scraping strip bracket through elastic components.

The elastic component comprises a spring, a torsion spring, a shrapnel or soft rubber.

The present disclosure also relates to a cleaning head comprising a housing having the wiper strip assembly and a roller secured thereto.

According to one aspect of the disclosure, the cleaning head further comprises a squeeze roller disposed side-by-side with the drum, and an axial distance between the drum and the squeeze roller is less than a sum of a radius of the drum and a radius of the squeeze roller, and the wiper strip assembly is disposed below the squeeze roller.

According to one aspect of the present disclosure, the cleaning head further includes a foul water tank and a clean water tank.

According to one aspect of the disclosure, the clean water tank disposed above the drum includes an elongated array of clean water outlets aligned with the drum surface between the squeeze roll and the scraping strip.

According to one aspect of the disclosure, the tip of the friction portion interferes with the drum surface by 0-0.5mm.

According to one aspect of the disclosure, the end of the drainage portion rides on the drum surface, and the end of the drainage portion overlaps the drum surface by 0.5-3mm.

According to one aspect of the disclosure, the sewage tank is connected with a sewage port through a pipeline, the sewage port is arranged at a position, close to the space between the squeeze roller and the scraping strip, on the side face of the shell, the clean water tank is connected with a clean water port through a pipeline, the clean water port is arranged at a position, close to the space between the squeeze roller and the scraping strip, on the other side face, and the height of the clean water port from the ground is larger than that of the sewage port from the ground.

Aspects of various embodiments of the present disclosure are applied to cleaning tools. The cleaning tool adopts a water and dust circulation cleaning technology, and can clean the viscous wet garbage which is most difficult to clean by the existing cleaning tool and separate the viscous wet garbage from dry garbage.

The scraping strip assembly can effectively clean the garbage attached to the surface of the roller, separate dry garbage and wet garbage, expand the application range of the cleaning tool, improve the water overflow preventing function of the cleaning head, increase the water storage capacity of the water tank, clean the roller more thoroughly and clean the ground.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure. In the drawings:

FIG. 1 is a schematic perspective view of one embodiment of a cleaning tool of the present disclosure;

FIG. 2 is an exploded view of the cleaning head of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the cleaning head of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the cleaning head of FIG. 1;

FIG. 5 is a schematic view of the underside of the cleaning head of FIG. 1;

FIG. 6 is a schematic side view of the cleaning head of FIG. 1;

FIG. 7 is a schematic illustration of the formation of a wringing zone;

FIG. 8 is a schematic view of a drum structure according to an embodiment of the present disclosure;

FIG. 9 is a cross-sectional view of a cleaning tool with the roller described above;

FIG. 10 is a schematic side elevational view of FIG. 9;

FIG. 11 is a schematic perspective view of an embodiment of a drum;

FIG. 12 is a schematic view of a drum disassembled state;

FIG. 13 is another schematic view of FIG. 12 from another perspective;

FIG. 14 is a schematic view of an embodiment of a squeeze roll;

FIG. 15 is a schematic view showing the structure of another embodiment of the squeeze roll;

FIG. 16 is a schematic view of a thread guide in an embodiment;

FIG. 17 is a schematic diagram of a secondary sink structure;

FIG. 18 is a schematic view of the internal structure of a cleaning tool with the squeeze roll of FIG. 14 and the cylinder of FIG. 8;

FIG. 19 is a schematic view of a trough formed by interference of squeeze rolls with a cylinder in one embodiment;

FIG. 20 is a schematic view of a trough formed by interference of a squeeze roll with a cylinder in another embodiment;

FIG. 21 is a schematic view of a cleaning unit in an in-line brush configuration;

FIG. 22 is a schematic view of a cleaning unit configured to combine a wiper strip assembly and an inline brush;

FIG. 23 is a schematic view of a wiper strip according to one embodiment;

FIG. 24 is a schematic view showing an example of construction including a foul water tank and a fresh water tank;

FIG. 25 is a schematic view of a cleaning tool with a booster system;

FIG. 26 is a schematic cross-sectional view of the cleaning head of FIG. 25;

FIG. 27 is an exploded view of a handle with a power assist identification feature;

FIG. 28 is a schematic diagram of the power wheel in a set-up state;

Fig. 29 is an exploded view of the booster wheel structure.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intermediary, or connected in any other manner between two elements or the relationship between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the disclosure. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Furthermore, the present disclosure may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings, it being understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present disclosure.

The present disclosure relates to a cleaning implement for cleaning floors, particularly smooth, flat, small area floors, such as household and kitchen floors. The cleaning implement of the present disclosure is particularly suitable for cleaning mixed waste that is mixed with dry waste, wet waste, and thick matter such as noodles, porridge, tomato sauce, and the like.

The dry garbage in the present disclosure refers to granular garbage, such as pericarp, melon seed shell, rice grain, paper sheet, etc.

The wet garbage is liquid garbage such as water, beverage, etc.

Viscous wet waste includes semi-solid waste with a certain viscosity such as soup, thick soup, porridge, tomato sauce, chocolate sauce and the like.

Other debris such as dust, floor marks, etc., are also objects of the present disclosure.

Fig. 1 is a perspective view of an embodiment of a cleaning tool of the present disclosure, fig. 2 is an exploded view of a cleaning head, fig. 3 is an internal structure of the cleaning head, fig. 4 is a schematic cross-sectional view, fig. 5 is a schematic bottom surface of the cleaning head, and fig. 6 is a schematic side surface of the cleaning head. As shown in connection with fig. 1-6, the cleaning tool of the present disclosure includes a cleaning head and a handpiece connected. The hand-held portion includes a cleaning bar 301, an extension bar 302, the cleaning bar 301 and the extension bar 302 being connected by a connecting structure 304. The cleaning bar 301 is connected to the cleaning head by a hinge structure 305. The operator drives the cleaning head to move on the ground surface through the handheld part, and various garbage scattered on the ground surface is cleaned.

The cleaning head of the disclosed cleaning tool includes a housing 500 with a cleaning module mounted at the bottom of the housing and within the housing that separates debris from the floor and within the housing. Wheels 190 are mounted on the bottom surface of the shell, so that the contact between the non-cleaning module and the ground is reduced, and the dragging is more labor-saving.

The cleaning module includes a cleaning unit 110 disposed at the bottom of the housing, a squeezing unit 120 disposed in parallel with the cleaning unit, a dry garbage collection unit 150 disposed at the rear of the cleaning unit for storing dry garbage, a cleaning unit 130 disposed at the inlet of the dry garbage collection unit 150, a sewage collection unit 140, and a clean water supply unit 160.

The sweeping unit 110 includes a drum 111, a blade 112, a drum driving mechanism 113 and a drum driving mechanism 114. The drum driving mechanism drives the drum 111 to rotate counterclockwise in fig. 4 about its axis by the drum transmission mechanism. The blade 112 is fixed to the case 500 and has an arc-shaped working surface, and a gap having a uniform distance is formed between the arc-shaped working surface and the outer circumference of the drum 111.

The drum 111 includes an inner hard glue shaft and a sponge layer wrapped outside the hard glue shaft. The end of the hard plastic shaft may be fixed to the housing 500 by a connector such as a bearing. The roller driving mechanism 113 drives the hard rubber shaft to rotate around the axis through the roller driving mechanism 114, and drives the sponge layer to rotate, so that the surface of the sponge layer performs circular motion.

When the drum 111 rolls over the ground, the particles of dry waste on the ground compress and deform the sponge layer, which wraps the particles of dry waste by deformation, so that the particles of dry waste are separated from the ground and rotate with the drum 111. When the position of the shovel bar 112 is reached, the particles of dry garbage leave the ground and are extruded by the shovel bar 112 and continue to rotate together with the roller 111. When the shovel bar 112 is rotated to the inlet of the dry garbage collection unit 150, the sponge layer 111b is deformed in a restoration manner due to the loss of the compression of the shovel bar 112, and the dry garbage particles wrapped by the sponge layer are released and flicked into the dry garbage collection unit 150.

The axis of the pressing unit 120 is disposed in parallel with the drum 111, and may be fixed to the case 500 by both ends, or may be fixed to the case 500 by a snap structure. The hardness of the pressing unit 120 is much greater than that of the sponge layer 111 b. The distance between the pressing unit 120 and the axis of the drum 111 is smaller than the sum of the radii of the two, and thus, the pressing unit 120 presses the drum surface after assembly. A wringing zone B is formed at a position where the wringing unit 120 faces the drum 111.

Fig. 7 is a schematic view of the formation of the wringing zone, and as shown in fig. 7, the squeezing unit 120 interferes with the drum 111, squeezing the sponge layer 111b of the drum at the interference. In the drawing, the drum 111 rotates clockwise, and a wringing zone B is formed below the wringing unit 120 in the drawing. The water carried on the drum sponge layer 111b flows out after being squeezed, and is collected by the sewage collecting unit 140. When the roller passes through the wet garbage, the sponge layer carries the wet garbage to continuously rotate clockwise. On the drum, the sponge layer from the ground point M (the position contacting the ground) to the pressing point N (the position contacting the pressing unit 120) contains sewage, the sewage leaves the sponge layer in the water pressing area B by the pressing unit 120, and is collected by the sewage collecting unit 140, so that the water content of the sponge layer passing through the pressing point N is unsaturated, and water absorption can be continued when the sponge layer rotates again to the point M to contact the ground, thus the cleaning tool can continuously absorb water accumulated on the ground, avoiding the sponge saturation from failing to absorb water effectively.

The cleaning tool of the present disclosure further includes a clean water supply unit 160. The purified water supply unit 160 directly or indirectly supplies purified water onto the sponge layer 111 b. The purified water enters the inside of the sponge layer, overflows from the sponge layer when being pressed by the pressing unit 120, and peels off dirt attached to the surface of the sponge layer 111b, thereby cleaning the surface of the drum.

As the roller rolls over the viscous wet waste on the floor, the semi-solid waste adheres to the surface of the sponge layer 111 b. The purified water supplied from the purified water supply unit 160 washes away the garbage layer attached to the surface of the sponge layer 111 b.

In order to maintain the relatively dry state of the pressed sponge layer, the purified water supply unit 160 sets a purified water outlet in the squeezing area. The sponge layer 111b absorbs purified water in the squeezing area to become saturated, and then the wet garbage and water adsorbed from the ground locked by the sponge layer are discharged through the squeezing of the squeezing unit 120, and the liquid is discharged, so that the garbage on the surface of the sponge layer 111b is taken away, and the surface of the sponge layer 111b is kept clean. Thus, the present disclosure can achieve cleaning of the surface of the roller brush 111 without an operator's hand or interruption of the cleaning operation, and the surface of the roller brush that contacts the ground is clean during pushing of the roller.

The present disclosure also includes a cleaning unit 130. The cleaning unit 130 is disposed above the inlet of the dry waste collection unit 150. When the surface of the drum rotates to the upper end of the shovel bar and reaches the inlet of the dry garbage collection unit 150, the solid garbage attached to the surface of the drum cannot be separated from the sponge layer 111b by the elasticity and the dead weight of the sponge, the cleaning unit 130 scrapes the solid garbage, and the scraped garbage falls under the dead weight and falls into the dry garbage collection unit 150. The cleaning unit 130 is particularly suitable for some small and light easily attached refuse, such as paper sheets, etc. The cleaning unit 130 keeps the surface of the sponge layer 111b free of dry waste.

The cleaning tool of the present disclosure further includes a water circulation module 200, and the water circulation module 200 includes a sewage collection unit 140 and a purified water supply unit 160 connected by a pipe. The sewage is extruded from the drum 111, the extruded sewage is collected to the sewage collecting unit 140 through a pipe, purified and then enters the purified water supply unit 160 to be recycled, sprayed to the water extrusion area again, and the rolling brush is cleaned.

The beneficial effects of the present disclosure are:

When the mop is used for cleaning the ground, the moist outer sponge contacts the ground, so that dust on the ground can not be raised, the mop has the effect of a common mop, and secondary pollution is prevented;

the outer sponge is matched with the shovel strips, so that the solid garbage can be completely collected;

The cleaning unit separates and collects the solid garbage attached to the outer layer sponge, and keeps the surface of the outer layer sponge free of the solid garbage;

The roller absorbs ground wet garbage, when water in the roller is extruded, the adhesive garbage attached to the surface of the roller is stripped and diluted, a water-soluble part is brought into a sewage tank, a water-insoluble part is stripped from the roller and enters a solid garbage tank, so that the adhesive garbage can be treated, and dry garbage and wet garbage can be separated;

The extrusion unit extrudes the liquid locked in the outer sponge to keep the unsaturated state of the outer sponge, so that the cleaning tool can continuously clean the liquid garbage;

The pure water supply unit and the extrusion unit act together, so that the roller contacted with the ground can be kept in a clean state all the time;

Accordingly, the present disclosure cleans viscous wet waste, particularly the mixing of various types of waste, and is capable of separating dry and wet waste, continuously keeping the outer sponge surface of the drum clean.

The components of the present disclosure, and the combination of the components, are not unique, and will be described one by one.

Embodiments of the roller

Fig. 8 is a schematic view of a drum structure according to an embodiment of the present disclosure. As shown in fig. 8, the drum includes a hard rubber shaft 111c at the shaft center and a sponge layer 111b wrapped around and fixed to the circumferential surface of the hard rubber shaft.

The density and hardness of the sponge have a direct effect on the water absorption and storage (also known as water locking). When the density of the sponge is improved to a certain extent, the water absorption performance is reduced, the hardness is improved, the water storage rate is improved, otherwise, the density of the sponge is reduced, the water absorption is improved, the hardness is reduced, and the water storage rate is reduced.

The drum of this embodiment has only a single sponge layer, and the sponge layer 111b is made by foaming polyvinyl alcohol (polyvinyl alcohol, vinylalcohol polymer, abbreviated as PVA). The PVA sponge has a density of 0.25-0.5g/cm ³ and a water absorption of 0.5-1.5g/cm ³. The Shore hardness A of the PVA sponge is 40-70. The water storage rate of the PVA sponge is 0.2-1.0g/cm ³. The sponge layer of this disclosure, because it possesses above-mentioned characteristic, consequently compare with current ordinary sponge cylinder of individual layer, has better effect:

The sponge layer has proper water absorption performance and water storage rate, and proper density and hardness, so that the sponge can be deformed properly in the mopping process, garbage particles are wrapped, most of the garbage particles can be ejected out by utilizing elasticity of the sponge layer when the sponge layer is limited by turning over a shovel bar, the sponge layer is separated from the garbage particles and falls into a dry garbage collection unit, omission is avoided, and the sponge can absorb more water when the accumulated water on the ground is treated, and less water remains on the towed bottom surface.

The single-layer sponge layer of the present disclosure does not have the disadvantage of affecting the life of the roller due to the separation of the double-layer sponge layer from the layer by extrusion.

The thickness of the sponge layer of the present disclosure is typically 3-15mm, which deforms sufficiently to encapsulate common particulate trash. The household cleaning tool is provided with a sponge layer with the thickness of 5-10mm, so that the household floor common dry garbage can be treated.

The diameter of the roller of the present disclosure can be as small as 15mm and as large as 700mm.

For example, a sponge layer with the thickness of 3mm is attached to the outer side of a solid hard rubber shaft rod with the diameter of 9mm, and the solid hard rubber shaft rod is assembled into the cleaning tool, so that dry garbage with small particle size can be treated, and the solid hard rubber shaft rod can be applied to cleaner places such as a convention center and a museum.

A drum with a diameter of 700mm is generally used outdoors or in places where dry waste particles are large.

On the surface of the drum, there may be further provided a spiral protrusion, which may be referred to as a first spiral protrusion 111f, as shown in fig. 8, one extending from one end of the drum to the other end, and in other embodiments, two spiral protrusions may be provided, the pitches of the two spiral protrusions being the same, extending from the opposite side of one end of the drum to the other end of the drum. I.e. the starting ends of the two spiral protrusions are located on the same generatrix of the drum. In other embodiments, the arrangement of the two helical protrusions may also be different, starting from the same generatrix at the ends of the drum, extending in opposite helical directions towards the middle. At the approaching position of the two spiral bulges, namely the middle part of the roller, a linear bulge parallel to the axial direction is arranged, and the linear bulge is connected with the two spiral bulges.

Fig. 9 is a cross-sectional view of a cleaning tool with the roller, fig. 10 is a schematic side view of fig. 9, fig. 11 is a schematic perspective view of an embodiment of a drum, fig. 12 is a schematic view of a drum detached state, and fig. 13 is another schematic view of fig. 12. As shown in fig. 8 to 12, one end of the hard plastic shaft includes a connecting shaft, and the other end is hollow cylindrical.

One end of the driving motor 113a is fixed on the cleaning head through a fixing seat 113e and a rotating shaft 113c, and the other end can rotate around the rotating shaft at a certain angle. The hollow end of the hard glue shaft 111c is sleeved on the motor, the end abuts against the driving motor 113a, and the other end of the hard glue shaft is fixed on a pressing telescopic device on the cleaning head. The pressing telescoping device 113f includes parts such as button, spring and dog, and the button atress, compression spring drive dog displacement leave the position of resisting hard rubber axle, can shift out the gyro wheel mounting groove on the cleaning head casing with this end of hard rubber axle 111c this moment, and the other end drives the driving motor 113a in it and revolutes the rotation of axle 113c together, forms the form of fig. 12, 13, and the cylinder can be taken off again from the motor, can take off cylinder 111. The stop block is retracted when the button of the telescopic device is pressed, and the stop block is reset when the button is released. The reverse operation is achieved and the drum can be mounted on the cleaning head. Or press the telescoping device setting on the cylinder, press the button, the spring drives the dog shrink, promotes from the concave part on the dog cleaning head casing for the cylinder breaks away from the constraint of cleaning head, can take out the cylinder easily at this moment.

The roller of the present disclosure may be also made into a structure with two ends blocked, and the driving motor is connected to the roller through a connecting piece to drive the roller to rotate. The cleaning tool with the roller driving motor can reduce the thrust of an operator to the cleaning tool and is suitable for operators with insufficient strength.

The spiral bulges on the roller can guide the sewage extruded by the extrusion unit to a designated position along the trend of the threads, such as a sewage pipe suction nozzle, so that sewage overflow can be prevented, and secondary pollution to the bottom surface is caused.

Embodiments of the extrusion unit

The squeeze unit of the present disclosure includes an elongated object juxtaposed with and disposed in interference with a roller. The strip-shaped object is fixed on the shell of the cleaning head, interferes with the roller, has hardness greater than that of the sponge layer on the surface of the roller, and can press the sponge layer to deform. The extrusion unit may have different physical structures, each having advantages.

The pressing unit as in fig. 9 includes a fixing base 125 and a bar-shaped protrusion 126. The extrusion unit is fixed on the shell through the fixing seat. When the drum 111 rotates around its own axis, the strip-shaped protrusions 126 are not moved, the sponge layer passing through the strip-shaped protrusions is deformed by extrusion, and most of the water locked by the sponge layer is extruded out of the sponge surface and flows down.

The pressing unit may be a pressing roller having a cylindrical shape. Is fixed on the cleaning head by two ends. The surface of the squeeze roll may be smooth or may have spiral protrusions.

Fig. 14 is a schematic structural view of an embodiment of a squeeze roller, and as shown in fig. 14, a squeeze roller 121 of this embodiment includes a roller body 121a having a cylindrical shape and being mounted on a housing of a cleaning head through both ends. The circumferential surface of the roller body 121a is provided with spiral protrusions, which may be referred to as second spiral protrusions 121f for the sake of distinction from the spiral protrusions on the drum. The number of the spiral bulges on the circumferential surface of the extrusion roller is one, and the spiral bulges extend from one end to the other end of the extrusion roller.

Fig. 15 is a schematic view showing the structure of another embodiment of the squeeze roll. This embodiment differs from the embodiment shown in fig. 14 in that the second spiral protrusion 121f is two in number, and extends from the same generatrix at both ends of the roller body 121a toward the middle of the roller body in opposite spiral directions.

In this embodiment, a middle portion of the roller body 121a is provided with two second spiral protrusions 121f, and a straight protrusion 121g axially parallel to the roller body 121a is provided at a middle position of the second spiral protrusions 121f, and the straight protrusion 121g may be connected to the two second spiral protrusions.

In this way, a closed sidewall may be formed at the surface of the roller body 121 a.

The side wall of the spiral bulge can play a role in pushing water, so that the sewage pressed out by the extrusion roller is pushed to the sewage port.

The squeeze roll shown in fig. 14 is provided at the cleaning head with the sewage port at the side, and the squeeze roll shown in fig. 15 is provided at the cleaning head with the sewage port at the middle of the squeeze roll.

Fig. 16 is a schematic view of a thread guide. In fig. 16, the water flow direction is shown by an arrow, the drum 111 is rotated clockwise, the squeeze roll 121 is rotated counterclockwise, and a squeezed water tank is formed at an angle between the squeeze roll 121 and the drum. The water purifying port is arranged at the right end of the machine, the water pumping port is arranged at the left end of the machine, threads are added at the squeeze roller 121 for enabling water to flow rapidly, the side surface of the threads can play a role in pushing water, water flow is enabled to be faster, accumulation is avoided, and the water surface rises and overflows the shell.

In the cleaning tool with the sewage port and the water purifying port on two opposite sides of the cleaning head, a secondary water tank is arranged beside the roller for accelerating the water flow. FIG. 17 is a schematic diagram of a secondary sink structure. The secondary water tank 1410 is angled. The water inlet 1411 is slightly higher than the water outlet 1412. After the pressing unit 120 presses the water of the drum 111, the water of the drum flows into the water tub along the surface of the drum, and the water flow rate in the water tub is relatively fast due to a certain inclination angle of the water tub. The efficiency of the washing cylinder is improved.

In addition, the arrangement mode of the second spiral protrusion can also be changed, for example, the second spiral protrusion is two, the thread pitches are the same, and the second spiral protrusion extends from the opposite side of one end of the roller body to the other end of the roller body. That is, based on the embodiment of fig. 14, a second spiral protrusion is added, and the starting points of the two second spiral protrusions are located at opposite sides of the circumference of the roller body.

Fig. 18 is a schematic view of the internal structure of a cleaning tool with the squeeze roller of fig. 14 and the drum of fig. 8. In the present embodiment, the drum 111 has a first spiral protrusion 111f, the pressing roller 121, and a second spiral protrusion 121f. The thrust to water is stronger.

The squeezing unit interferes with the roller, and squeezed water exists between the squeezing unit and the roller to form a water tank. The surface of the roller can be sprayed with purified water or the purified water is injected into the water tank to clean the surface of the roller. As shown in fig. 19, the squeeze roller 121 interferes with the drum 111, and a water tank a is formed above the interference of the squeeze roller and the drum.

The position where the pressing unit is provided takes into consideration the formation position of the water tank. In fig. 19, when the drum 111 rotates clockwise, the pressing roller 121 is disposed at the upper right of the drum, and the water tank is formed at the right half of the drum. In fig. 20, when the drum 111 rotates counterclockwise and the pressing roller 121 is disposed at the upper left, the water tank is formed at the left half.

The present disclosure refers to the stationary extrusion of the extrusion unit relative to the housing as static extrusion. The static extrusion structure is simple, and the extrusion unit can be directly integrated with the main structural component of the machine. The design is more convenient.

The extrusion unit can be fixed and can also rotate.

In one embodiment, blind holes may be provided at both ends of the roll body. The pressing unit further comprises a bearing, a bearing mounting seat and a connecting short shaft. The bearing is fixed on the shell of the cleaning head through the bearing mounting seat, one end of the connecting short shaft is fixed in the bearing, and the other end is fixed in the blind hole.

Or the two ends of the roller main body are provided with connecting shafts which are fixed in the bearings.

Whereby the squeeze roller is rotatably secured to the housing of the cleaning head.

The squeeze roller can be provided with a power mechanism for actively squeezing water, so that the cost can be saved, the squeeze roller is not provided with the power mechanism, and the squeeze roller rotates by virtue of the friction force of the roller.

The first motor may be fixed to the housing of the cleaning head, and the first motor may be connected to the squeeze roller to drive the squeeze roller to rotate.

When the drum is also equipped with a driving motor, the driving motor rotates in the opposite direction to the first motor. Therefore, the power is saved most, the driving motor and the first motor can be motors within 10W, so that the cleaning of the common household cleaning tool can be realized, and the cleaning tool is noiseless and environment-friendly.

Of course, the driving motor and the first motor may also rotate in the same direction. The rotational speed of the first motor and the driving motor can be generally equal to the inverse ratio of the diameters of the squeeze roller and the drum, so that the linear speed at the contact position of the squeeze roller and the drum is the same, and the power is saved most.

When the rotating speed of the first motor is larger than that of the driving motor, the squeezing effect of the squeezing roller is better than that of the situation. But the energy consumption of the first motor is relatively high.

When the rotating speed of the first motor is smaller than that of the driving motor, the squeezing effect of the squeezing roller is better than that of the situation that the squeezing roller does not rotate.

Embodiments of the cleaning Unit

The cleaning unit of the present disclosure may take many forms.

Rolling brush assembly embodiment

The cleaning unit of fig. 16, 18, 19, 20 is a roll brush assembly. As shown, the roller brush assembly 131 includes a roller brush shaft 131b, bristles 131a. The brush 131a is disposed on the circumferential surface of the rolling brush shaft 131 b. The bristles shown in fig. 16 are arranged in a V shape, and the bristles shown in fig. 18 are arranged in a straight line along the direction of the bus bar. The brush roller assembly is made by planting brush hairs on a plastic brush roller, and the brush roller can be made into a hollow or solid structure and is implemented in a specific structure. The rolling brush is uniformly provided with 6-8 groups of brush hair.

The rolling brush circumference may be driven by a motor, and the rolling brush shaft 131b is connected to a third driving motor through a coupling. The rolling brush is rotated.

Wherein the diameter of bristles 131a is typically selected to be 0.1mm nylon bristles. The length of the bristles 131a is set according to a specific structure. Bristles 131a of the roll brush assembly 131 contact the surface of the drum 111. The micro-contact generally interferes between 0.5 and 1mm, so that the brush hair can slightly flap the solid garbage such as floating ash on the rolling brush. If too much interference increases the damping of the drum, but also the water in the sponge layer of the drum is thrown out and then enters the garbage box through the roller brush track, so that the garbage box is excessively moist.

The structural arrangement of the rolling brush and the roller can take various forms, and mainly realizes the functions.

The roller brush assembly may be used in all types of cleaning tools mentioned in this disclosure.

In-line brush embodiment

The cleaning unit shown in fig. 21 is an in-line brush 132. An in-line brush 132 is secured to the housing of the cleaning head. The cleaning tool of figure 21 operates by absorbing the wet or viscous waste water-containing portion of the floor after the roller 111 rolls the waste by a layer of sponge that is unsaturated with the roller. For the deformation of the solid garbage drum sponge layer, the solid garbage drum sponge layer is wrapped and then rolled up. Through the rails of the shovel bar 112 and then to the highest point of the shovel bar, the solid garbage falls into the garbage box 141 at the bottom under the action of the rebound and gravity of the sponge layer without relative extrusion. The upper end of the garbage box 141 is provided with straight-line brush hairs, the length of the straight-line brush 132 is consistent with that of the roller 111, the brush hairs are uniformly arranged, and the brush hairs are used for sweeping away fine garbage such as fluff and floating ash adhered to the roller. As little of this waste as possible is allowed to enter the sink. The structure saves space, reduces cost and can achieve good cleaning effect.

In-line brushes may be used in all types of cleaning tools mentioned in this disclosure.

Embodiment of the scraper bar assembly

Under the condition of relatively more viscous garbage, if a rolling brush or an in-line brush is used for cleaning the roller, viscous objects can adhere to the brush, and finally, the cleaning machine can be difficult. To this end, the present disclosure adopts a scraping bar and scraping structure to scrape the viscous wet garbage on the roller into the dustbin, and the cleaning unit is a scraping bar assembly 133 as shown in fig. 23, 3 and 9.

As shown in connection with fig. 23, 3 and 9, the wiper strip assembly 133 includes an elongated wiper strip holder 133c for attachment to the cleaning head. The scraper holder 133c is provided with a substantially herringbone friction portion 133a and a drainage portion 133b. For ease of understanding, in the coordinates of fig. 23, the X direction is referred to as the longitudinal direction, the substantially Y direction is referred to as the wide direction, and the substantially Z direction is referred to as the high direction.

The wiper strip assembly 133 is formed by the wiper strip holder extending in a wide direction. The drainage portions 133b are located at both ends of the scraper bar support and extend substantially in the height direction of the scraper bar support.

In the cleaning tool shown in fig. 9, the cleaning tool includes a drum 111, a motor 113a driving the drum, a blade 112, and a trash box 141.

Wherein the outer layer of the roller is supported by a water-absorbing sponge layer, the inner layer is supported by a hard rubber shaft, and driving forces are arranged at the two ends or the center of the hard rubber shaft so that the roller can rotate.

Wherein a scraper bar support 133c is fixed at a position above the garbage can 141 and closely attached to the drum 111. The friction part and the drainage part can be made of silica gel with the Shore hardness A of 40-80, so that the scraping strip component 133 can be tightly contacted with the roller 111, and the end head of the friction part interferes with the surface of the roller by 0-0.5mm. The friction part 133a can peel off the floating ash and the viscous garbage remained on the drum 111 from the drum, and drop the same into the garbage box 141. The drainage part 133b is overlapped with the roller 111 by 0.5-3mm, and the drainage part 133b is used for sealing water and preventing water in the water tank from flowing into the garbage box from two ends of the scraping strip because the water tank for cleaning the roller is designed above.

The material of the drainage part is not limited to the soft rubber, and can be made of hard material. In order to realize the function of overlapping the soft rubber and the roller to guide water flow, the drainage part can be made of a material with the Shore hardness D of 70-90, such as ABS, PC, PP or other hard rubber materials, even can be made of thin metal sheets, and the drainage part is fixed at two ends of the scraping strip bracket through an elastic part. The elastic component can include spring, torsional spring, shell fragment or soft rubber etc. so, realize flexonics between the drainage portion of hard material and the cylinder.

As shown in fig. 23, the edge of the friction portion 133a has a tooth shape, and the tooth shape can better separate the floating ash and the viscous garbage attached to the drum from the drum.

A plurality of alignment blocks are provided at positions of the scraper bar holder 133c facing away from the friction portion 133a and the drainage portion 133 b. Accordingly, a plurality of recesses are provided in the cleaning head housing connected to the bar support 133 c. Through the cooperation of alignment piece and sunken, alignment position that can be quick improves packaging efficiency.

The friction part and the drainage part can be made of the same material as the scraping strip bracket, and also can be made of different materials, and are fixed together by bonding after being respectively molded. The scraper bar support can be fixed on the shell of the cleaning head in a gluing or two-shot molding mode.

The wiper strip assembly may be used in all types of cleaning tools mentioned in this disclosure.

In the cleaning implement shown in FIG. 24, a foul water tank 211 and a clean water tank 231 are further included. The fresh water tank 231 is provided with a mop pole 40 near one end of the mop head. The clean water tank includes an elongated arrangement of clean water outlets 2311 aligned with the surface of the drum 111 between the squeeze roll 121 and the wiper strip assembly 133.

In addition, in other embodiments, the sewage tank may be connected to a sewage port through a pipeline, and the sewage port is disposed at a position on the side surface of the housing, which is close to between the squeeze roller and the scraping strip. The clean water tank is connected with the clean water port through a pipeline, the clean water port is arranged at the position, close to the space between the squeeze roller and the scraping strip, of the other side face, and the height of the clean water port from the ground is larger than that of the sewage port from the ground. The drainage part of the scraping strip component is just positioned at the water purifying port and the sewage port. In this embodiment, by utilizing the height difference between the water purifying port and the sewage port, the water flow is promoted by relying on the self weight of the water, and the water guiding function of the drainage part of the scraping strip assembly is realized, so that the water overflow out of the water path system can be better avoided.

The cleaning unit shown in fig. 22 is a combination of a wiper strip assembly and an inline brush. The wiper strip assembly 133 of this embodiment replaces the rubbing portion of the wiper strip assembly shown in fig. 23 with an in-line brush 1331. The purified water outlet 2311 is provided on the pressing unit to form a straight purified water hole or a long and narrow purified water port. A sump 211 is provided in the center of the cleaning head.

In addition, there is also a cleaning mode of blowing by an air knife. And is suitable for cleaning the dry garbage attached on the roller. In fig. 22, the position of the scraper assembly 133 is replaced by an air outlet, and the surface of the roller is blown reversely along the tangential direction, so that the hair, paper sheets and the like on the surface of the roller can be cleaned.

The components of the various cleaning tools described above of the present disclosure may be combined as desired. Several embodiments of the combined cleaning tool are illustrated below.

Example 1 of cleaning implement

The cleaning implement of this embodiment is unpowered and includes a unidirectional mechanism.

The cleaning tool of this embodiment includes a cleaning head and a handle portion hinged to the cleaning head.

Fig. 2,3 and 6 show the cleaning head of the present embodiment. As shown, the cleaning head includes a drum 111 provided on a housing 500, a unidirectional mechanism provided on at least one side of the drum, a squeeze roller 121 obliquely above the drum, a shovel bar 112 below the drum, a scraper bar assembly 133 below the squeeze roller, a garbage bin 141 below the scraper bar assembly, a sewage tank 211 behind the garbage bin, and a clean water tank 231 provided on a mop rod. At least two wheels 190 are provided at the bottom of the cleaning head.

The housing is provided with a roller mounting hole, and the roller 111 is rotatably mounted on the housing 500 via a bearing 115d and a knob 115 e.

The knob 115e includes a short shaft 115e1 for fixing the bearing 115d, a flange 115e2 formed by extending one end of the short shaft in a radial direction, and the flange 115e2 is fixed to the housing 500. The flange is provided with a straight protrusion 115e3. The operator can conveniently rotate the knob to take out the drum 111.

The flange plate can be fixed on the shell in a buckling manner, and also can be fixed on the shell through threads.

The unidirectional mechanism includes a ratchet 115a fixed at one end of the drum, a stopper 115b fixed on the housing, and a spring 115c abutting between the stopper and the housing. The drum includes a hard glue shaft and a sponge layer coating the hard glue shaft, and the ratchet 115a is fixed on the hard glue shaft of the drum 111. The limiting block 115b abuts against the ratchet teeth of the ratchet 115a under the action of the spring, so that the ratchet 115a can only rotate anticlockwise as shown in fig. 3.

The cleaning implement of this embodiment is advanced by the operator by pushing the cleaning implement only for dry waste, wet waste and sticky waste or a mixture of the three types of waste, so that the drum passes over the ground where the waste is scattered and the drum rotates. The clean water in the clean water tank falls on the surface of the roller by means of dead weight to wet the roller. The sponge on the surface of the roller wraps the dry garbage, the dry garbage enters the garbage box under the action of the shovel strips, the wet garbage is absorbed by the sponge layer of the roller, and the sticky garbage is adhered to the surface of the roller. The squeezing roller extrudes water absorbed in the sponge layer, washes the surface of the lower sponge layer, and can wash away the sticky garbage attached on the sponge layer and fall into a sewage tank. The surface of the roller after extrusion is recovered to be clean, so that the roller is still clean when contacting the ground again.

The sponge roller is contacted with the ground and rubbed, which is equivalent to the action of wiping the ground, so that the imprinting on the ground can be cleaned.

When the ground has sticky garbage, the sponge roller can suck wet parts into the sponge micropores, soft garbage is wrapped by the slightly dry parts of the roller, and then the sticky garbage is brought into the machine under the cooperation of the shovel bars.

The embodiment can clean solid garbage, can clean wet garbage and sticky garbage, and can perfectly solve the problems existing in the existing cleaning tools on the market at present. The cleaning efficiency is improved.

In the embodiment, the machine type is small and exquisite, no motor driving device is arranged, the whole manufacturing cost is low, and the machine type motor driving device is more suitable for indoor use in home.

The sponge roller can not damage the ground, the wet sponge roller wraps up the garbage and is then rolled into the machine, dust emission can not occur, air pollution is caused, the garbage compacted by the sponge roller can be wetted, the size can be reduced, and the sponge roller is also applicable to the ground with water stains.

Example 2 of cleaning implement

The cleaning head of the cleaning tool of the embodiment comprises a power roller, and a water tank is arranged on the cleaning head. A filtering device is arranged in the waterway to prevent the water pump from being blocked.

Fig. 9-18 are schematic structural views of the present embodiment. As shown, the cleaning head is assembled with a drum 111, a bar-shaped protrusion 126, a "chevron" shaped scraping bar 133, a garbage box 141, and a water tank 210 in this order from front to rear.

Unlike embodiment 1 of the cleaning tool, the drum of the present embodiment is driven by a motor 113 a. One end of the motor 113a is mounted on the housing 500 through a rotating shaft 113c, the outer diameter of the motor 113a is sleeved in the roller, and the other end of the motor 113a is fixed on a hard rubber shaft of the roller, so that the roller rotates along with the outer diameter of the motor (corresponding to an output shaft of the motor). The roller of the implementation can be a plane roller or a roller with threads, and the roller is detachably arranged on the shell through the pressing telescopic device.

The water tank 210 of the present embodiment is positioned at the end of the cleaning head, and the water pump pumps water to drive the water circulation. The water tank is divided into a sewage box and a water purifying box by a detachable filter box or a filter screen in the middle. The water purifying box is connected with a water purifying outlet arranged on the shell through a pipeline, and the water purifying outlet guides water into the strip-shaped protrusions 126, the middle of the scraping strip 133 and a cleaning area formed on the surface of the roller to clean the surface of the roller. The cleaned sewage, and the sewage extruded from the strip-shaped protrusions 126, flow into the sewage box through the pipe from the sewage inlet provided at the opposite side. The sewage of the water tank is filtered by a filter screen or a filter box, enters the clean water tank, is pumped to the cleaning area again by the water pump, and is circulated in a reciprocating manner.

The inlet and outlet of the water tank are provided with one-way valves, and the corresponding position of the shell is provided with a thimble. When the water tank is taken out from the shell, the one-way valve is closed, water is prevented from overflowing, and when the water tank is installed, the thimble abuts against the one-way valve, so that a waterway is smooth.

The filter screen or the filter box can filter dry garbage or fine garbage which accidentally enters the waterway, prevent the blockage of the water pump and prolong the service life of the cleaning head.

The implementation can integrate an ozone generating device in the mop rod, and the generated ozone is introduced into the water tank, so that the water in the water tank contains the ozone, bacteria can not be bred in the water for a period of time, the water is prevented from mildew, and the roller is cleaned by the ozone-containing water, so that the effect of sterilizing the ground can be achieved.

The strip-shaped protrusions 126 of the present example can be replaced by a squeeze roller with threads, and the guiding effect on the water flow is stronger.

The implementation uses the power to drive the roller, so that the operation is more convenient.

In addition, the roller and the water tank can be detached, maintenance and cleaning are convenient, the filtering device is used for keeping the waterway clean, the service life is longer, ozone has a disinfection effect on cleaning tools and the ground, and cleaning is more thorough.

The self-cleaning of the roller can be realized by utilizing the water and dust circulation cleaning technology, and the sweeping, the dragging, the washing and the twisting are combined together, so that the self-cleaning roller is greatly convenient for a user, and a very good cleaning effect can be realized.

The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present disclosure.

Finally, it should be noted that the foregoing description is only a preferred embodiment of the present disclosure, and not intended to limit the present disclosure, and although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A wiper strip assembly for a cleaning tool, the cleaning tool comprising a cleaning head housing, a roller, a squeeze roller, and a debris box, the wiper strip assembly comprising:

the long scraping strip support is fixed at a position above the garbage box and close to the roller;

The friction part is formed by extending the scraping strip bracket in the width direction, and the end head of the friction part interferes with the surface of the roller;

the drainage parts are positioned at two ends of the scraping strip support and extend along the height direction of the scraping strip support, the drainage parts are lapped on the roller and used for guiding water flow, and the drainage parts are made of soft rubber or hard materials;

The included angle between the squeeze roller and the roller forms a squeezed water tank, and the drainage part prevents water in the water tank from flowing into the garbage box from the two ends of the scraping strip support.

2. The wiper strip assembly as set forth in claim 1 wherein the edges of said friction portion are tooth-shaped.

3. The wiper strip assembly of claim 1 wherein the wiper strip support is provided with a plurality of alignment blocks facing away from the friction portion and the drainage portion, and a plurality of recesses are provided in a cleaning head housing coupled to the wiper strip support, the alignment blocks mating with the recesses.

4. The wiper strip assembly as set forth in claim 1 wherein said friction portion is of silicone.

5. The wiper strip assembly as set forth in claim 4 wherein the tip of the friction portion interferes with the roller surface by 0-0.5mm and the friction portion has a shore hardness of 40-80.

6. The wiper strip assembly as set forth in claim 1 wherein said drain has a shore hardness of 70-90.

7. The wiper strip assembly as set forth in claim 6 wherein said drain interferes with the roller by 0.5-3mm.

8. The wiper strip assembly as set forth in claim 1 wherein said wiper strip support has resilient members at both ends thereof, said drainage portion being secured to both ends of said wiper strip support by means of the resilient members.

9. The wiper strip assembly as set forth in claim 8 wherein the resilient member comprises a spring, torsion spring, spring plate, or soft gel.

10. A cleaning head comprising a housing having secured thereto the wiper strip assembly and roller of any one of claims 1-9.

11. The cleaning head of claim 10, further comprising a squeeze roller disposed alongside the roller and having an axial distance from the roller less than a sum of a radius of the roller and a radius of the squeeze roller, the wiper strip assembly being disposed below the squeeze roller.

12. The cleaning head of claim 11, further comprising a clean water tank disposed above the drum, the clean water tank including an elongated array of clean water outlets aligned with the drum surface between the squeeze roll and the wiper strip.

13. The cleaning head of claim 11, wherein the tips of the friction portions interfere with the drum surface by 0-0.5mm.

14. The cleaning head of claim 11, wherein the tip of the drain rides on the drum surface and the tip of the drain overlaps the drum surface by 0.5-3mm.

15. The cleaning head of claim 12, wherein the waste water tank is connected to a waste water port through a pipeline, the waste water port is disposed at a position between the squeeze roll and the scraping strip on a side surface of the housing, the clean water tank is connected to a clean water port through a pipeline, the clean water port is disposed at a position between the squeeze roll and the scraping strip on the other side surface, and a height of the clean water port from the ground is greater than a height of the waste water port from the ground.

16. A cleaning implement comprising a cleaning head according to any one of claims 10 to 15.