CN117883011A

CN117883011A - Surface cleaning device with good dirt absorbing effect

Info

Publication number: CN117883011A
Application number: CN202311162506.8A
Authority: CN
Inventors: 朱泽春; 周伟; 王阳; 王凝
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-16

Abstract

The invention discloses a surface cleaning device with good dirt absorbing effect, which comprises a dirt absorbing fan and a ground brush provided with a roller brush, wherein the ground brush is provided with a dirt absorbing port facing the roller brush, a comb tooth piece with a plurality of comb teeth and a scraping plate, the comb tooth piece and the scraping plate are respectively abutted with the roller brush to scrape dirt on the surface of the roller brush, the dirt absorbing fan is used for sucking away the scraped dirt/dirt liquid through the dirt absorbing port, the comb tooth piece extends downwards from the outer side of the top of the dirt absorbing port to the dirt absorbing port so as to partially shield the dirt absorbing port to increase the suction pressure, and meanwhile, the comb teeth are used for guiding the sucked dirt or the dirt liquid towards the dirt absorbing port, so that most of the dirt liquid, the dirt, the hair and other winding matters from the surface to be cleaned can easily enter the dirt absorbing port, the dirt absorbing effect is good, the dirt absorbing efficiency is high, and good experience is brought to customers.

Description

Surface cleaning device with good dirt absorbing effect

Technical Field

The invention belongs to the technical field of cleaning appliances, and particularly provides a surface cleaning device.

Background

With the development of surface cleaning technology, surface cleaning equipment gradually goes into the family life of people and becomes a common electrical appliance for cleaning floors. Surface cleaning apparatus generally comprise a main body and a floor brush in which a roller brush is provided as a cleaning member, which is rubbed against the floor to effect cleaning. In the process of cleaning the floor by the cleaning member, the cleaning member is required to simultaneously scrape sewage and adhered dirt on the cleaning member by utilizing the scraping plate so that the cleaning member is cleaner for cleaning the surface to be cleaned, in addition, in the process of cleaning the surface to be cleaned by windings such as hairs, thread ends and the like, the windings are easy to wind on the outer surface of the cleaning member, especially the periphery of a single roller, and in order to clean the foreign matters wound on the cleaning member, a technician is provided with comb teeth on the floor brush so as to scrape the windings on the outer surface of the cleaning member through the comb teeth.

Such as those disclosed in the prior art, include a series of spaced apart protrusions or teeth extending into the cleaning roller to prevent accumulation and removal of debris (e.g., hair, threads, etc.), the protrusions extending along a substantial portion of the cleaning roller and extending partially into the cleaning roller to intercept the debris as it passes around the roller, the protrusions having angled leading edges that are not aligned with the center of rotation of the cleaning roller and are directed in or against the direction of rotation of the cleaning roller. The comb unit and protrusions are shaped and configured to facilitate removal of debris from the cleaning roller with minimal impact on the operation of the cleaning apparatus. Although the protrusions or teeth can well prevent the accumulation and winding of hairs, wires and the like, the gaps between the protrusions or teeth are small, so that solid garbage is easy to remain in the gaps between the protrusions or teeth, and new troubles are brought to customers by cleaning the protrusions or teeth after being polluted. In addition, since the rated power of the dirt sucking motor is fixed, the size of the dirt sucking port is also fixed, if the position of the carding unit and the direction in which the protrusions or teeth are arranged are important, the protrusions or teeth are guided to the rotating direction of the cleaning roller or are opposite to the rotating direction of the cleaning roller in the prior art, and interfere with the cleaning cloth on the cleaning roller greatly, so that the resistance of the movement of the cleaning roller is increased, the consumption of the driving motor is large, the driving motor is not easy to maintain to work at a good working performance, and the service life of the driving motor is easy to be seriously influenced. In addition, the interference with the cleaning roller is larger, so that a tooth mark appears on the cleaning roller, the cleaning effect of the cleaning roller is uneven, the problem that the surface to be cleaned is not cleaned cleanly locally is caused, and the brush body or brush hair of the cleaning roller is thinned locally due to long-time interference, so that the service life of the cleaning roller is greatly reduced.

Disclosure of Invention

According to the surface cleaning device, the comb tooth piece has a guiding function towards the dirt sucking port, and the comb tooth piece extends downwards to at least partially cover the dirt sucking port to increase wind pressure, so that the dirt sucking effect of the dirt sucking port is improved, and the cleaning force of the surface device is further improved.

In order to solve the problems in the prior art, the invention provides a surface cleaning device with good dirt absorbing effect, which comprises a dirt absorbing fan and a ground brush provided with a roller brush, wherein the ground brush is provided with a dirt absorbing port facing the roller brush, a comb tooth piece with a plurality of comb teeth and a scraping plate, the comb tooth piece and the scraping plate are respectively abutted with the roller brush to scrape dirt on the surface of the roller brush, and the dirt absorbing fan is used for pumping the scraped dirt/dirt liquid through the dirt absorbing port.

Further, the floor brush is also provided with a floor scraping strip which is contacted with the surface to be cleaned, a dirt sucking mouth is formed between the floor scraping strip and the roller brush, the comb tooth piece is arranged on the top wall of the dirt sucking mouth and is provided with a guide part facing the dirt sucking mouth.

Further, the comb teeth comprise rear tooth surfaces facing away from the roller brush, and the rear tooth surfaces incline towards the dirt sucking port.

Further, the comb teeth comprise rear tooth surfaces facing away from the roller brush and front tooth surfaces facing towards the roller brush, and the rear tooth surfaces are obliquely arranged towards the dirt suction nozzle to form guide parts; or, the comb tooth piece further comprises a connecting part, the comb tooth comprises a rear tooth surface facing away from the roller brush and a front tooth surface facing towards the roller brush, the rear tooth surface is connected with the rear surface of the connecting part, and the rear surface of the connecting part and the rear tooth surface jointly form a guiding part.

Further, the angle a of the front tooth surface which is inclined downwards along the top of the dirt sucking port is more than or equal to 80 degrees and less than 90 degrees.

Further, the downward inclination angle of the rear tooth surface is theta, and theta is more than or equal to 30 degrees and less than or equal to 35 degrees.

Further, the connection portion extends at least partially down to the dirt pickup opening.

Further, the comb teeth are arranged at the lower end of the connecting part, and tooth grooves between the comb teeth extend upwards along the front surface of the connecting part to form diversion trenches; or the connecting part is abutted with the scraping plate, and tooth grooves between the comb teeth extend upwards to the lower surface of the scraping plate along the front surface of the connecting part to form guide grooves.

Further, tooth grooves between the comb teeth are provided with arc-shaped surfaces opposite to the roller brush, and the circle center of each arc-shaped surface is located at one side far away from the center of the roller brush.

Further, a spacing area is arranged between the comb teeth and the scraping plate, so that dirt scraped by the scraping plate flows through the spacing area and tooth grooves of the comb teeth in sequence

The beneficial effects of the technical scheme are as follows:

1. according to the invention, the comb teeth are arranged on the comb teeth piece, the comb teeth are provided with the front tooth surfaces which face the roller brush and are in contact with the surface of the roller brush, the front tooth surfaces extend downwards from the outer side of the top of the dirt suction port to at least partially shield the dirt suction port, when the surface cleaning device cleans the surface to be cleaned while scraping dirt, the dirt suction fan works, so that the effective area of the dirt suction port is reduced, and compared with the dirt suction port which is not shielded by the comb teeth, the wind pressure at the dirt suction port which is shielded by the comb teeth is increased, and most of dirt liquid, dirt, hair and other winding matters sucked from the surface to be cleaned to the dirt suction port can easily enter the dirt suction port. When in dirt suction, the roller brush rotates, and a small part of dirt, dirt liquid and hair windings which are not sucked continuously move upwards along with the roller brush, the comb tooth piece and the scraping plate are sequentially contacted with the roller brush, the hair and other windings on the brush body are peeled off and scraped off from the roller brush by utilizing the comb teeth, the brush body of the roller brush is scraped and extruded by the scraping plate, the dirt and the dirt liquid on the brush body of the roller brush are scraped off, the dirt liquid flows downwards by virtue of gravity and the extrusion force of the scraping plate, the liquid flow flushes the hair and other windings which are peeled off and loosened near the comb teeth to the dirt suction opening under the guiding action of the front tooth surface, and because the comb teeth have gaps, the gaps are provided with parts which correspond to the dirt suction opening, the gaps among the comb teeth corresponding to the dirt suction opening part lead to form a slit effect, the gap wind pressure of the comb teeth is increased, the scraped dirt liquid is smoothly sucked into the dirt suction port through the gaps among the comb teeth corresponding to the dirt suction port, so that the dirt suction effect is further improved, even if larger solid particles with the size similar to that of the comb teeth gaps exist, the comb teeth deform under the action of larger wind pressure, so that the gaps among the comb teeth become larger, and further, larger particles or clustered windings are sucked into the dirt suction port under the action of suction force generated by larger partial pressure of the comb teeth gaps, therefore, the accumulation of hair and solid dirt in the gaps among the comb teeth is avoided, the cleaning effect of the scraping plate and the comb teeth on the roller brush is improved, and especially, the stripping and suction effect on the windings are better, the dirt or the wound is not reserved on the comb teeth, so that good experience is brought to customers.

2. The invention also provides a ground scraping strip which is in contact with the surface to be cleaned, a dirt sucking mouth is formed between the ground scraping strip and the roller brush, the comb tooth piece is arranged on the top wall of the dirt sucking mouth, the comb tooth piece is provided with a guide part which faces the dirt sucking mouth, when dirt is sucked, most dirt liquid and dirt on the surface to be cleaned move towards the dirt sucking mouth under the action of the dirt sucking fan, the dirt sucking mouth enters an air duct between the dirt sucking mouth and the dirt sucking mouth in a roller brush cavity under the driving of the roller brush, because the comb tooth piece is provided with the guide part which is obliquely arranged towards the dirt sucking mouth, and the dirt liquid, the dirt, the hair and other winding matters are moved towards the dirt sucking mouth under the guide action of the guide part, and when the dirt sucking mouth is moved to the dirt sucking mouth, the comb tooth piece extends downwards and partially shields the dirt sucking mouth, and the effective area of the air duct at the dirt sucking mouth of the dirt sucking mouth is suddenly reduced, therefore the air pressure is increased, the suction force near the dirt sucking mouth of the comb tooth is increased, the dirt liquid and dirt can be sucked and the dirt can be sucked more rapidly and continuously and more rapidly, and the dirt can be sucked and more rapidly and more conveniently.

3. Because the dirt absorbing fan is positioned on the machine body and above the dirt absorbing port, under the action of the dirt absorbing fan, the air flow moves upwards from the dirt absorbing port, and because the comb tooth piece is provided with a guide part which is obliquely arranged towards the dirt absorbing nozzle, the comb tooth piece is positioned at the top of the dirt absorbing port, and extends downwards from the top of the dirt absorbing port and partially shields the dirt absorbing port, although the shielded area of the dirt absorbing port is reduced, the air pressure is increased, and the invention forms the guide part by obliquely arranging the comb tooth to the dirt absorbing nozzle by arranging the rear tooth surface which is far away from the roller brush and the front tooth surface which is arranged towards the roller brush; or, the comb tooth piece further comprises a connecting part, the comb tooth comprises a rear tooth surface facing away from the roller brush and a front tooth surface facing towards the roller brush, the rear tooth surface is connected with the rear surface of the connecting part, and the rear surface of the connecting part and the rear tooth surface jointly form a guiding part. The back tooth surface of the comb tooth piece forms a guiding part to conform to the trend of airflow, the guiding effect of the back tooth surface of the comb tooth piece towards the dirt absorbing mouth is better, under the effect of the dirt absorbing fan, dirt and dirt liquid on the surface to be cleaned enter the dirt absorbing mouth and the air channel between the dirt absorbing mouth through the dirt absorbing mouth between the ground scraping strip and the roller brush, most dirt liquid and dirt can smoothly move to the vicinity of the dirt absorbing mouth along the guiding surface under the guiding effect of the back tooth surface of the comb tooth piece, and quickly enter the dirt absorbing mouth under the action of the increased wind pressure at the blocked dirt absorbing mouth, so that the dirt absorbing efficiency is further improved, and the dirt absorbing effect is improved.

4. Through the inclination angle of the rear tooth surface is theta, and theta is more than or equal to 30 degrees and less than or equal to 35 degrees, the sewage and the dirt are easier and more difficult to move to the vicinity of the dirt suction port, so that the suction efficiency is better improved, and the dirt suction effect is improved. If the angle theta of the inclination of the rear tooth surface is larger than 35 degrees, the shielding area of the comb teeth on the dirt absorbing port is enlarged, at the moment, the dirt absorbing port is shielded too much, the maximum passing length or width of the dirt absorbing port is reduced, particularly, a certain of heavier materials with larger length or width are provided, although the wind pressure is increased, so that the dirt absorbing force of the dirt absorbing port is increased and can be larger than the weight of the materials, if the length or width of the dirt absorbing port is larger than the maximum passing length or width of the dirt absorbing port, the materials still cannot pass through the dirt absorbing port, and the dirt absorbing effect is poor; when the inclination angle theta of the rear tooth surface is smaller than 30 degrees, the dirt absorbing port is shielded less, the guide path is lengthened, but the wind pressure after the dirt absorbing port is shielded is increased slightly, the suction force is increased less or less, although the area of the dirt absorbing port is influenced less, the dirt with larger particles can enter, but the guide path is lengthened to cause the dirt or the dirt liquid to move in the dirt absorbing channel to consume larger energy, and the dirt absorbing force is insufficient, so that the dirt absorbing efficiency cannot be improved, and the comb teeth form obstruction for the dirt liquid and the dirt to enter the dirt absorbing port, so that the dirt absorbing effect is reduced.

5. The connecting part is formed between tooth grooves between the comb teeth, forms a diversion effect on scraped dirt liquid, and at least part of the connecting part extends downwards to the dirt absorbing port to form a back wind port of the air flow, so that the air flow at the position is easier to generate negative pressure, thereby providing higher water pressure for the dirt liquid to flow, being more beneficial to the dirt liquid to drive the peeled dirt and hair windings to move downwards to the dirt absorbing port, the lower end of the connecting part is lower than the upper end of the dirt absorbing port so that the connecting part at least partially shields the dirt absorbing port, the length of the gap of the comb teeth below the connecting part between the comb teeth at the dirt absorbing port is enough to form a slit effect, the wind pressure of the gap of the comb teeth at the dirt absorbing port is increased, and the gaps of the comb teeth are all corresponding to the dirt absorbing port because the lower end of the connecting part is lower than the upper end of the dirt absorbing port, the wind pressure at the dirt absorbing mouth corresponding to the gap is increased greatly, unbalanced airflow is generated at the dirt absorbing mouth corresponding to the gap, when the wind such as hair and the like which move downwards under the driving of the dirt liquid and dirt move between the gaps of the comb teeth at the dirt absorbing mouth from the connecting part, the wind such as the dirt liquid, the dirt and the hair and the like is smoothly sucked into the dirt absorbing mouth under the action of the large wind pressure of the unbalanced airflow generated by the gaps between the comb teeth, thereby further improving the dirt absorbing effect, even if large solid particles with little difference with the size of the gaps between the comb teeth exist, because the gaps between the comb teeth are all arranged corresponding to the dirt absorbing mouth, even the wind with little difference with the size of the gaps between the comb teeth enters the gaps between the comb teeth, the comb teeth through which the large particles pass deform under the action of the large wind pressure so as to enlarge the gaps between the local comb teeth, and then make bigger granule or the winding of agglomeration be inhaled the dirt absorbing mouth by great suction force effect from the clearance that produces deformation between the broach, consequently, avoided hair, solid filth to accumulate in the clearance of broach, improved scraper blade and broach to the cleaning performance of roller brush, especially to the stripping and the suction effect of winding better, there is not dirty or winding deposit on the broach to brought good experience to the customer.

6. Through being equipped with the clearance between connecting portion and the roller brush, the guide effect of the clearance formation dirty liquid of connecting portion and roller brush or filth is good to the drainage effect that the clearance between the comb teeth of liquid flow below flows for make liquid flow drive winding such as filth or hair and flow to the clearance between the comb teeth downwards, and flow more smoothly, not only can wash away the clearance between the comb teeth of corresponding dirt absorbing mouth department fast smoothly with the winding such as filth or hair in the tooth's socket, thereby make things convenient for it to be absorbed away from dirt absorbing mouth department fast.

7. The tooth grooves between the comb teeth extend upwards along the front surface of the connecting part to form guide grooves by arranging the comb teeth at the lower end of the connecting part; or, connecting portion and scraper blade butt, tooth's socket between the broach upwards extends to the lower surface of scraper blade along the front surface of connecting portion and forms the guiding gutter for the drainage effect of the tooth's socket between the downward broach of liquid flow especially the tooth's socket part of running through front and back flank of tooth between the broach is good, makes liquid flow drive winding downflow such as filth or hair to the clearance between the broach more smooth and easy, can wash away the clearance between the broach with winding such as filth or hair in the guiding gutter fast smoothly, thereby make things convenient for it to be absorbed away under the great wind pressure effect from dirt absorbing mouth.

Drawings

FIG. 1 is a schematic view of a first embodiment of a surface cleaning apparatus according to the present invention;

FIG. 2 is a cross-sectional view of the surface cleaning apparatus

FIG. 3 is a schematic view of a second embodiment of a surface cleaning apparatus according to the present invention;

FIG. 4 is a schematic view of a floor brush of the surface cleaning apparatus of FIG. 3;

FIG. 5 is a cross-sectional view of the floor brush of FIG. 4 taken along the direction A-A;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is an exploded view of a roller brush with a roller brush cover mounted on a ground brush;

FIG. 8 is a front view of the floor brush of FIG. 3;

fig. 9 is an enlarged view at B in fig. 8;

FIG. 10 is a cross-sectional view of the structure at B in FIG. 9 taken along the direction C-C;

FIG. 11 is a further embodiment of a connection portion of a comb;

FIG. 12 is another embodiment of the attachment portion of the comb;

FIG. 13 is a cross-sectional view of a floor brush of a third embodiment of a surface cleaning apparatus according to the present invention;

fig. 14 is an enlarged view of D in fig. 13;

FIG. 15 is an enlarged view of the mating portion of the comb and blade members of FIG. 14;

FIG. 16 FIG. 17 is a further embodiment of a connection portion of a comb;

fig. 18 is another embodiment of a floor brush with attached comb-teeth members and scrapers.

The reference numerals are as follows:

1. a body; 11 handles; 2. a floor brush; 21. an upper housing; 22. a lower housing; 221. a front side; 222. a first flange; 223. a second flange; 224. a bottom; 23. a receiving chamber; 24. a dirt suction port; 241. a top; 25. a dirt suction hose; 26. a roller brush cover; 27. a roller brush cavity; 28. a ground scraping strip; 3. a clean water tank; 4. a roller brush; 41. brushing; 42. a brush body; 43. a roller; 44. a first rotating roller; 45. a second rotating roller; 46. a support frame; 500. suction negative pressure zone (liquid flow pressurization zone); 5. a scraper; 51. a mounting section; 52. a suspended section; 521. a front end; 53. a transition section; 54. a lower surface; 6. a comb member; 61. comb teeth; 611. a penetrating section; 612. a diversion section; 613. a gap; 614. a diversion trench; 615. a slit effect region; 616. a front tooth surface; 617. a rear tooth surface; 6171. a first inclined surface; 6172. a second inclined surface; 618. tooth tips; 62. a connection part; 621. a drainage surface; 622. a rear surface; 64. a fixing part; 7. dirt holding barrel (dirt holding box); 8. a water dividing member; 9. a spacer.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present application, which are merely for explaining the technical principles of the present application and are not intended to limit the scope of the present application.

It should be noted that, in the description of the present application, terms such as "center," "upper," "lower," "top," "bottom," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships, and are merely for convenience of description, but do not indicate or imply that the apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the terms in this application will be understood by those skilled in the art as the case may be.

The surface cleaning device of the invention comprises a hand-held surface cleaning device, such as a floor cleaner, a dust collector, a cloth cleaner and the like, and also comprises a self-moving surface cleaning device, such as a sweeping robot, a sweeping robot and the like.

The flow rate of the liquid is increased when the liquid passes through the stenosis. The flow rate of the gas stream is also increased by the flow of similar liquids in the tube as the ground passes over narrow terrain, and the density is also increased by the compressibility of the gas. The effect of such topographical canyons on airflow is known as the "slot effect," also known as the "canyon effect. The slit effect in the invention is the same as the canyon effect in daily speaking, and refers to the phenomenon that wind sucked into a roller brush cavity from the position between a roller brush of a ground brush and a ground scraping strip moves to a dirt sucking port and encounters a gap between comb teeth covering the dirt sucking port, and the wind speed is increased and the wind pressure is increased when the wind passes through the narrower gap due to the narrower gap. Similarly, the liquid flow enters the small slits or the pipeline from a wider and gentle area, the water pressure is increased, the flow speed is increased, and the liquid flow pressurizing area in the invention refers to a narrow gap formed by the small slits between the comb tooth piece and the roller brush, into which the liquid flow enters, and tooth grooves between the comb teeth.

The slit effect area of the invention refers to an area formed by gaps between two adjacent comb teeth, wherein the comb teeth partially cover the dirt absorbing opening, and the adjacent comb teeth are arranged corresponding to the dirt absorbing opening. For example, there are 8 comb teeth covering the dirt sucking mouth, there are 7 comb teeth gaps in the 8 comb teeth, and the area formed by the 7 gaps is the slit effect area.

The roller brush can be a single-roller, a double-roller or a crawler-type roller brush. In the present embodiment, a single-roller brush is used, the roller brush 4 is mounted on the floor brush, the axial direction of the roller brush 4 is defined as the left-right direction, and the horizontal direction perpendicular to the axial direction of the roller brush 4 is defined as the front-rear direction; during the rotation of the roller brush 4, the roller brush 4 is operated clockwise from the left, i.e. the roller brush is rotated from bottom to top and further back, so that the floor brush is moved back. When the surface cleaning device works, the clean water tank 3 supplies liquid for the roller brush, the roller brush rotates, the brush body and the brush hair wipe the surface to be cleaned, the scraping plate extrudes and scrapes the roller brush to scrape off dirt liquid and dirt on the brush hair and/or the brush body, the comb teeth scrape off windings such as hair on the brush hair and the brush body, the dirt suction fan works, dirt liquid and dirt on the surface to be cleaned are sucked through the dirt suction opening, and the scraped dirt liquid and dirt on the roller brush.

Embodiment one:

as shown in figures 1 and 2, the surface cleaning device with good dirt absorbing effect comprises a machine body, the machine body is equivalent to a floor brush 2, the floor brush 2 of the shell of the machine body comprises a lower shell 22 and an upper shell 21 buckled on the lower shell 22, a dirt absorbing fan (not shown in the figure) is arranged in the shell, a dirt containing box 7 is detachably arranged on the machine body and is provided with an air duct between the dirt containing box and the dirt absorbing fan, the bottom of the lower shell 22 is upwards sunken to form a roller brush cavity 27, a roller brush 4 is detachably arranged in the roller brush cavity 27 at the bottom of the lower shell 22, a floor scraping strip 28 is arranged at the bottom end of the cavity wall of the roller brush cavity 27, a dirt absorbing nozzle 29 is formed between the floor scraping strip 28 and the roller brush 4, the dirt absorbing mouth 24 is arranged on the cavity wall of the roller brush cavity 27, a comb tooth piece 6, a dirt absorbing plate 5 and a dirt absorbing plate 8 are sequentially arranged on the cavity wall of the roller brush cavity 27 from bottom to top, the dirt containing box 7 is arranged above a central axis of the roller brush 4, the dirt containing box 7 is communicated with the dirt absorbing mouth 4 through the dirt absorbing mouth 24 and the dirt absorbing mouth 4, the dirt absorbing mouth 4 is respectively arranged at the top of the dirt absorbing mouth 4, and the dirt absorbing mouth 4 is increased through the dirt absorbing mouth 4. When the surface cleaning device cleans the surface to be cleaned, the roller brush rotates, the scraping strip scrapes dirt while the dirt absorbing fan works, the effective area of the dirt absorbing port is reduced because the comb part shields the dirt absorbing port, the wind pressure of the dirt absorbing port shielded by the comb part is increased compared with the dirt absorbing port which is not shielded by the comb part, most of dirt liquid and dirt and windings such as hair and the like sucked to the dirt absorbing port from the surface to be cleaned can easily enter the dirt absorbing port, and the dirt absorbing effect is improved.

Embodiment two:

as shown in fig. 3 to 12, the surface cleaning device with good dirt absorbing effect of the present invention comprises a floor brush 2 capable of moving on a surface to be cleaned (typically, the floor), a machine body 1 hinged with the floor brush 2, wherein the rear part of the floor brush 2 is pivotally connected with the lower part of the machine body 1, a handle 11 for driving is arranged at the upper end of the machine body 1, a dirt containing barrel 7, a clean water tank 3 and a dirt absorbing fan (not shown) for absorbing dirt liquid and/or dirt into the dirt containing barrel 7 are arranged on the machine body 1, a detachable power source structure is further arranged on the machine body 1, the dirt absorbing fan and a battery pack are arranged in the power source structure, the power source system is arranged above the dirt containing barrel and is positioned on the same side as the dirt containing barrel, a dirt absorbing port 24 is arranged on the floor brush 2, the floor brush 2 comprises an upper shell 21 and a lower shell 22, the upper shell 21 is buckled on the lower shell 22 to form a floor brush shell, a containing cavity 23 is formed in a region in the floor brush shell, a front side of the bottom 222 of the lower shell 22 is also provided with a detachable power source structure, a ground scraping strip 28 is arranged on the front side of the lower shell 22, and a hard scraping strip is made into a ground strip 28. The dirt absorbing port 24 is arranged on the front side 221 of the lower shell 22, the dirt absorbing port is rectangular, the four corners of the dirt absorbing port are rounded, a dirt absorbing hose 25 communicated with the dirt absorbing port 24 is arranged in the accommodating cavity 23, the dirt absorbing hose 25 penetrates out from the rear side of the accommodating cavity 23 upwards to be connected with a dirt absorbing pipe (not shown in the figure) on the dirt containing barrel 7, the floor brush 2 is further provided with a roller brush 4 for cleaning a surface to be cleaned, a scraping plate 5 and a comb-tooth piece 6 for cleaning the roller brush 4, and the scraping plate in the embodiment is a metal scraping plate. As shown in fig. 3 and 4, the roller brush 4 includes a first rotating roller 44, a second rotating roller 45, a supporting frame 46 connecting the first rotating roller 44 and the second rotating roller 45, and cleaning members sleeved on the outer surfaces of the first rotating roller 44 and the second rotating roller 45, the cleaning members including a brush body 42 and bristles 41. The diameters of the first rotating roller 44 and the second rotating roller 45 are equal, the scraping plate 5 is arranged above the central axis EF of the first rotating roller 44, the suspension section 52 of the scraping plate 5 is obliquely arranged downwards, the roller brush 4 is arranged on the front side of the ground brush 2, the front side of the ground brush 2 is also provided with a roller brush cover 26 covering the upper side of the roller brush 4, the front side 221 of the upper shell 21 and the lower shell 22 and the roller brush cover 26 form a roller brush cavity 27 for installing the roller brush 4, the scraping plate 5 and the comb member 6 are sequentially arranged above the dirt sucking port 24, the water distributing member 8 is further arranged above the scraping plate 5, the lower surface of the scraping plate 5 is at least partially attached to the upper surface of the comb member 6, a plurality of comb teeth are arranged on the comb member 6, a plurality of comb teeth 61 are arranged on the comb member 6, the comb teeth 61 are provided with front 616 facing the roller brush 4 and are in contact with the surface of the roller brush 4, and the front tooth surface 616 extends downwards from the outer side of the top of the dirt sucking port to at least partially shield the dirt sucking port 24. When the surface cleaning device cleans the surface to be cleaned while scraping dirt, the dirt suction fan works, so that the effective area of the dirt suction opening is reduced, and therefore, compared with the dirt suction opening which is not shielded by the comb teeth, the wind pressure at the dirt suction opening which is shielded by the comb teeth is increased, and most of dirt liquid, dirt, hair and other winding matters sucked from the surface to be cleaned to the dirt suction opening can easily enter the dirt suction opening.

As shown in fig. 3 and 4, the front side of the bottom 224 of the lower housing 22 is further provided with a ground scraping strip 28 contacting the surface to be cleaned, the ground scraping strip 28 is located below the dirt suction opening 24 and forms a dirt suction nozzle 29 with the roller brush 4, the downward extending portion of the comb member 6 is located between the dirt suction opening 24 and the dirt suction nozzle 29, and the comb member 6 has a guiding portion inclined toward the dirt suction nozzle 29. In this embodiment, the comb element 6 further comprises a connecting portion 62, the comb element 6 comprises a rear tooth surface 617 facing away from the roller brush and a front tooth surface 616 facing towards the roller brush, the rear tooth surface 617 is connected to the rear surface 622 of the connecting portion 62, and the rear surface 622 and the rear tooth surface 617 of the connecting portion 62 together form a guiding portion. The front tooth surface 616 of the comb 61 extends downwards and partially shields the dirt absorbing port 24, so that the area of the airflow at the dirt absorbing port 24 shielded by the comb 61 is suddenly reduced, the wind pressure is increased, the suction force of the airflow near the dirt absorbing port 24 shielded by the comb 61 is increased, the stay and adhesion of the dirt liquid and the dirt at the dirt absorbing port 24 are reduced under the guide action of the increased suction force and the guide part of the comb 61, most of the dirt liquid and the dirt can more effectively and rapidly enter and pass through the dirt absorbing port to be continuously sent upwards into the dirt containing barrel, and the dirt absorbing efficiency is improved.

As shown in fig. 5, 6 and 7, the comb teeth 61 of the comb member 6 extend at least partially into the bristles 41 of the roller brush 4, the comb teeth 61 include a penetrating section 611 and a guiding section 612, the comb teeth 61 include a rear tooth surface 617 facing away from the roller brush 4 and a front tooth surface 616 facing the roller brush, the front tooth surface and the rear tooth surface are rectangular and extend from the connection portion to the tooth tip, the rear tooth surface 617 is inclined toward the dirt suction port 24, the front end 521 of the scraper 5 is located in front of the tooth tip 618 of the comb teeth 61 and abuts against the brush body 42 of the roller brush 4, the comb teeth 61 extend at least partially into the bristles 41 of the roller brush 4, and the lower surface 54 of the scraper 5 forms a liquid flow pressurizing area 500 with the front surface of the comb member 6, as shown in fig. 7. The cleaning work starts, the roller brush rotates, the broach contacts with the roller brush firstly, the winding matters such as dirt, waste liquid, hair and the like on the roller brush are stripped from the roller brush and move downwards to the dirt absorbing opening, even if a small part of the winding matters such as dirt, waste liquid, hair and the like are not stripped completely, the winding matters are loosened and still move upwards along the roller brush along with the roller brush due to adhesion or winding relation of the winding matters, the front end of the scraping plate is positioned in front of tooth tips, the scraping plate deeply extrudes the scraping roller brush, the waste liquid in the roller brush is extruded again, the small part of dirt is scraped off, the hair winding matters are stripped completely, the re-extruded waste liquid is wrapped with the stripped winding matters such as dirt, hair and the like and also flows downwards along the front surface of the comb part, at the moment, the two extruded waste liquid flow continues to move downwards, the multi-strand gap between the front surface of the comb part 6 and the lower surface 54 of the scraping plate 5 is smaller, the area is filled with the brush, the liquid flow increases in the area, the flow is led into the area of the contact with the hair, the flow is sucked into the area at least in the contact with the front surface of the comb part, the hair winding matters is wrapped with the hair, the flow is sucked into the area at least, and the flow is sucked into the area, and the dirt flow is sucked into the area at least at the time.

As shown in fig. 3 to 6, the front side 221 of the lower housing 22 is provided with a first protruding edge 222 and a second protruding edge 223 protruding forward, the dirt absorbing opening 24 is disposed on the front side 221 between the first protruding edge 222 and the second protruding edge 223, the comb member 6 includes a comb 61, a fixing portion 64, and a connecting portion 62 connecting the fixing portion and the comb, the comb 61 protrudes downward from the connecting portion 62, the longitudinal section of the comb is triangular or approximately triangular, a guiding groove 614 is further disposed between the two adjacent guiding sections 612, the guiding groove 614 is disposed on the connecting portion, the guiding sections 612 are integrally connected through the connecting portion, that is, the guiding groove 614 is opened on the connecting portion 62 between the two adjacent guiding sections 612, and extends upward to the lower surface of the dirt scraping section 5, that is, the guiding groove 614 extends from the lower end of the connecting portion 62 to the top end of the connecting portion 62, that is, the guiding groove 61 extends along the front surface of the connecting portion 62 to the connecting portion, and gradually reduces in thickness to the front end of the connecting portion. The guiding groove 614 is the tooth's socket of two adjacent broachs 61, from the bottommost end of connecting portion 62 to tooth point 618 be run through the section, guiding groove 614 corresponds the clearance 613 setting of run through section 611, scraper blade 5 includes installation section 51 and unsettled section 52, and installation section 51 sets up in fixed part 64 top, and the lower surface of installation section 51 and the upper surface laminating setting of fixed part 64, the top surface and the unsettled section 52 at least part laminating of connecting portion 62, the forward protrusion connecting portion 62 setting of the front end 521 of unsettled section 52, scraper blade 5 top sets up water knockout drum 8, and the installation section 51 and the laminating of fixed part 64 laminating of scraper blade 5 are pressed from both sides and are established between first flange 223 and water knockout drum 8 lower surface. The comb teeth 61 extend downwards and at least partially cover the dirt sucking mouth 24 when seen from the front side of the roller brush 4 towards the dirt sucking mouth, a gap 613 penetrating through the front tooth surface 616 and the rear tooth surface 617 is formed between the two adjacent penetrating sections, a slit effect area 615 is formed at the dirt sucking mouth 24 by the gap 613 of the two adjacent penetrating sections 611, as shown in fig. 8, 10 is an operation schematic diagram when air flows pass through the gap between the comb teeth, when the dirt sucking fan works, the wind pressure at the gap 613 increases and the wind speed is also increased, the wind pressure near the dirt sucking mouth which is not covered by the comb teeth is smaller than the wind pressure at the place, so that unbalanced air flow is generated at the dirt sucking mouth, and wind, dirt liquid such as hair in the gaps of the comb teeth are smoothly sucked into the dirt sucking mouth by the faster wind speed under the larger wind pressure of the unbalanced air flow, and the dirt sucking efficiency is further improved. Therefore, the accumulation of hair and solid dirt in the gaps of the comb teeth is avoided, and especially, the stripping and suction effects on the winding are good, and the comb teeth are free from dirt or winding residues, so that good experience is brought to customers.

As shown in FIG. 6, the comb teeth pieces 6 are provided with a plurality of comb teeth 61, the width of the guide grooves is not larger than the gap between the comb teeth, so that enough water pressure is generated in the guide grooves, dirt or hair windings can be carried by the dirt liquid to flow down quickly without being stuck and adhered at the position, the equivalent tooth width of the comb teeth is b which is 1.4mm or smaller and is 1.6mm or smaller, the tooth width is reasonable, the contact area between the comb teeth and the brush body is ensured, the dirt or hair windings on the brush body can be stripped, no carry-over occurs, the quantity of the comb teeth and the guide grooves is ensured, enough water pressure is generated between the comb teeth, the generated water pressure is enough to be larger than the adhesive force of the dirt or the winding or the dirt liquid, the dirt or hair windings between the comb teeth are washed down, the effect of removing the hair winding and the like is ensured, and dirt can enter the dirt sucking mouth through the gap between the comb teeth smoothly. The width of the comb teeth 61 is b, the tooth width b is rectangular, the distance between the gaps 613 of two adjacent comb teeth 61 is L, that is, the groove width of the tooth grooves is equal to the distance between the gaps, that is, the distance L is equal, wherein b is greater than L, and the distance L is less than or equal to L and less than 1.5mm, so that the reasonable gap between the penetrating sections of the comb teeth covering the dirt absorbing port is ensured, the area of a slit effect area is ensured, enough wind pressure can be generated at the position, the suction force is increased, the generated suction force is enough to be greater than the adhesive force of dirt or winding or dirt liquid, and the clamping force of the winding or larger particles clamped between the two comb teeth is more favorable for dirt to smoothly enter the dirt absorbing port through the gaps of the comb teeth. The height of the penetrating segment 611 covering the dirt absorbing port 24 is h, wherein h is more than 0.7mm and less than or equal to 3.5mm, and the length of the penetrating segment covering the comb teeth at the dirt absorbing port is ensured to be enough, so that the wind pressure of the penetrating segment covering the dirt absorbing port can be increased, the suction force generated by the increased wind pressure is enough to resist the adhesive force of dirt or winding or dirt liquid in the gap, and the clamping force of the winding or larger particles clamped between the two comb teeth, so that dirt can smoothly enter the dirt absorbing port through the gap of the comb teeth. In this embodiment, l=1.2 mm, h=3 mm, the length of the comb teeth formed by such a scheme is reasonable, the point where the tooth tip 618 is tangent to the brush body 42 of the roller brush 4 is slightly far away from the central axis EF of the roller brush, that is, the tooth tip of the comb teeth can be contacted with the brush body earlier, the stripping treatment effect on the wound matter on the roller brush is better, the length of the comb teeth stretching into the brush hair is longer, the contact area of the comb teeth and the comb hair is larger, obvious tooth marks are not generated on the brush body, the movement resistance of the comb teeth to the roller brush is also not large, in addition, the length of the comb teeth covering the dirt absorbing opening is enough, the slit effect is easier to be generated, the surface cleaning device is facilitated to absorb larger garbage from the surface to be cleaned, and the strong slit effect can be formed at the position where the comb teeth cover the dirt absorbing opening, so that the strong suction force is generated, and the cleaning suction effect on the dirt or the wound matter scraped by the small part of the comb teeth and the scraping plate is better.

As shown in fig. 7, the comb teeth 61 are inclined downward relative to the horizontal plane and extend towards one side of the roller brush 4, the included angle between the comb teeth 61 and the horizontal plane is not smaller than 60 °, in this embodiment, the longitudinal section of the comb teeth is triangular, the comb teeth 61 have a front tooth surface 616 and a rear tooth surface 617 which are inclined downward, the angle a of the front tooth surface 616 along the top 241 of the dirt absorbing port 24 is 80 degrees less than 90 degrees, so that the positions of the tooth tips of the comb teeth tangent to the brush body of the roller brush are reasonable, the length of the comb teeth which can extend into the bristles of the brush body is reasonable, and the comb teeth can effectively scrape the wound such as hair which is to be wound on the roller brush and cannot collide with the brush body too much or even form tooth marks. When a is greater than or equal to 90 degrees, the length of the comb teeth covering the dirt absorbing opening is larger, the dirt absorbing area of the dirt absorbing opening is greatly reduced, and although the dirt absorbing problem that dirt or dirt liquid or windings are stripped off and scraped from the brush body of the cleaning roller by the scraping plate and the comb teeth is solved, the large dirt absorbed from the surface to be cleaned by the surface cleaning machine is blocked by the comb teeth and cannot enter the dirt absorbing opening, so that worse experience is brought to customers, the depth of the comb teeth extending into the brush hair is shallower, and the problem that the winding such as dirt or hair at the root of the brush hair is not easy to strip possibly occurs. When a is smaller than 80 degrees, the length of the comb teeth covering the dirt suction opening is smaller, although larger dirt sucked from the surface to be cleaned can be sucked into the dirt suction opening, hair and the like cannot be wound at the tooth tips of the comb teeth, but the depth of the comb teeth extending into the bristles is increased, although the stripping effect on the windings on the brush body is good, the contact between the tooth tips of the comb teeth and the brush body of the cleaning roller is large, tooth marks are easy to form on the brush body, the surface to be cleaned is polluted by secondary pollution, in addition, the gap of the comb teeth is not changed greatly for the wind pressure at the dirt suction opening due to the smaller length of the comb teeth covering the dirt suction opening, and even if fewer and lighter windings can enter the dirt suction opening, the suction force generated by the wind pressure is insufficient to overcome the adhesion force of the gaps between the comb teeth, and the small granular dirt or the windings of small groups are difficult to suck and clean. The rear tooth surface 617 is connected to the rear surface 622 of the connecting portion 62, and the rear surface 622 and the rear tooth surface 617 of the connecting portion 62 together form a guide portion. The connection portion 62 extends at least partially downward to the dirt absorbing port 24, where a back air port of the air flow is formed, so that the air flow at the location is easier to generate negative pressure, thereby providing higher water pressure for the flow of the dirt liquid, being more beneficial to the dirt and hair windings stripped by the dirt liquid to move downward to the dirt absorbing port, the lower end of the connection portion 62 is lower than the upper end of the dirt absorbing port 24, so that the connection portion 62 at least partially shields the dirt absorbing port, so that the length of the gap between the comb teeth below the connection portion at the dirt absorbing port is enough, thereby better forming a slit effect, increasing the wind pressure of the gap between the comb teeth at the dirt absorbing port, and increasing the wind pressure at the dirt absorbing port corresponding to the gap due to the fact that the lower end of the connection portion is lower than the upper end of the dirt absorbing port, thereby being more beneficial to the dirt absorbing mouth of the surface cleaning device. In this embodiment, the rear tooth surface 617 is disposed obliquely downward along the connecting portion 62, the rear tooth surface 617 of the comb tooth is formed by connecting a first inclined surface 6171 and a second inclined surface 6172, the first inclined surface 6171 is connected with the rear surface 622 of the connecting portion 62, the first inclined surface 6171 is formed by extending downward from the rear surface 622, and the guiding portion is formed by the rear surface 622, the first inclined surface 6171 and the second inclined surface 6172. The angle of inclination of the first inclined surface 6171 is β, where a.ltoreq.β.ltoreq.90 °, where the angle of inclination β of the first inclined surface 6171 is equal to or greater than the angle of inclination of the leading tooth surface 616, and is at most 90 °. The included angle between the second inclined plane 6172 and the horizontal plane is θ, so that the inclined angle θ of the second inclined plane 6172 is θ, and the inclined angle θ of the second inclined plane 6171 is equal to or less than 30 ° and equal to or less than 35 °, in this embodiment, the inclined angle θ of the rear tooth surface 617 refers to the inclined angle θ of the second inclined plane 6172, therefore, under the guiding effect of the inclined angle θ of the second inclined plane 6172, the dirt liquid and the dirt are easier and more difficult to move to the vicinity of the dirt absorbing port, the angle just conforms to the angle formed by the dirt absorbing hose passing through the dirt absorbing port from the rear part of the accommodating cavity upwards and the dirt absorbing pipe on the dirt accommodating barrel, so that the guiding effect is good, and the first inclined plane 6171 plays a good blocking and steering effect when the liquid flowing backwards more than the liquid flowing across the comb teeth 61, especially has a good blocking and steering effect on the liquid flowing upwards after being extruded along the space between the comb teeth and the dirt absorbing port, the dirt absorbing port is more easily moved to the dirt absorbing port again after the liquid flowing back, the dirt absorbing hose passes through the dirt absorbing port, the dirt absorbing port is just in the dirt absorbing port, the dirt absorbing hose is more smoothly, and the dirt absorbing and dirt is more efficiently flowed into the dirt absorbing and dirt absorbing pipe is more smoothly. In the present embodiment, the inclination angle a=84° of the front tooth surface, the inclination angle θ=33° of the second inclined surface, the inclination angle β=90° of the first inclined surface. The tooth thickness of the comb teeth gradually becomes smaller from bottom to top, the tooth grooves gradually become shallower from top to bottom, the flow guiding effect is enhanced, meanwhile, the comb teeth better extend into the comb hair, the resistance generated by the movement of the roller brush is smaller, the tooth grooves adjacent to the scraping plate are shallower, the water pressure is minimum, the negative pressure is minimum, the tooth grooves are shallow, the space for retaining dirt or dirt is small, and therefore a large amount of dirt or dirt cannot be retained. The bottom surface of the tooth groove is a cambered surface, the center of the cambered surface is positioned on the side where the roller brush is positioned, and by adopting the structure, the flow guiding effect is better, so that the sewage or dirt can run in the tooth groove more smoothly, and the accumulation probability is reduced.

As shown in fig. 4, the suspended section 52 of the scraping plate 5 abuts against the brush body 42 of the roller brush 4, the tooth tips of the penetrating section 611 of the comb teeth 61 extend into the wetted bristles, so that the front tooth surfaces 616 of the comb teeth 61 are intersected with the wetted bristles, the tooth tips 618 of the comb teeth 61 are tangent to the brush body 42, the tooth tips of the comb teeth are located in the front tooth surface 616 and form a tangent line with the brush body 42 of the roller brush 4 as MN, so that the comb teeth 61 of the comb teeth 6 can extend into the bristles 41 of the brush body 42, the contact surface of the comb teeth 6 with the brush body 42 of the roller brush 4 is greatly reduced, and only the point of the tooth tips 618 is in line contact, so that the comb teeth 61 of the comb teeth 6 are downwards carded 41 along the tangential direction of the brush body 42 of the roller brush 4, the wound objects on the outer surface of the roller brush 4 and dirt hidden at the root of the brush 41 can be effectively scraped and stripped, the tooth tips 618 of the brush body 42 can not form a large-shaped brush body 42, and the rolling resistance of the roller brush can not be greatly increased due to the increase of the motor resistance, and the rolling resistance of the roller brush can not be greatly increased.

When the dirt sucking fan works, the air flow passes through the dirt sucking port to form a wind pressure area, the area between the part, above the dirt sucking port, of the front surface of the comb-tooth piece 6 and the lower surface 54 of the scraping plate 5 and the roller brush does not correspond to the dirt sucking port, bristles are filled in the area, and the air flow cannot pass through and reach the bristles, so that a suction negative pressure area 500 is formed in the area. The scraping plate 5 extrudes the scraping brush body 42, under the negative pressure environment, the dirty liquid is scraped to gather to a certain extent in a suction negative pressure area between the lower part of the scraping plate 5 and the front surface of the comb teeth piece 6, a large water pressure is generated, so that the liquid flow is gushed to the guide sections of the comb teeth, and the liquid flow is divided into a plurality of liquid flows by the guide sections of the comb teeth and enters the guide sections, so that the water pressure is further increased instantly between the guide sections of the comb teeth, therefore, the wind or dirt peeled off from the brush body by the comb teeth is washed under the action of the plurality of liquid flows with increased water pressure, the liquid flow drives the windings such as dirt and hair to flow to the penetrating section at the dirt absorbing mouth through the contact area of the tooth surface and the brush body line of the roller brush before the comb teeth, so that the windings cannot be reserved in the gaps of the comb teeth, the problem that the roller brush is wound and the windings such as hair are wound between the gaps of the comb teeth is solved, the windings such as dirt liquid, dirt and hair can flow to the gaps of the comb teeth at the dirt absorbing mouth rapidly, the dirt absorbing mouth is sucked smoothly under the action of larger wind pressure, the dirt absorbing efficiency is improved, and the dirt absorbing effect is improved. Thus, the suction negative pressure zone of the gas flow is also referred to as the liquid flow pressurization zone of the contaminated liquid.

In this embodiment, the mounting section 51 is disposed above the central axis EF of the roller brush 4, a transition section 53 is further disposed between the mounting section 51 and the suspension section 52, and the suspension section 52 is disposed obliquely downward along the diameter direction of the roller brush 4 and is in contact with the brush body, so that the mounting section 51 and the suspension section 52 are smoothly connected by the transition section 53, and the fixing portion 63 of the comb member 6 is attached to the mounting section. The suspending section 52 is at least partially disposed above the comb teeth 61, the front end 521 of the suspending section 52 of the scraper 5 is located in front of the tooth tips 618 of the penetrating section 611, the tooth tips 618 are tangential to the brush body 42 of the roller brush 4, and a region between the partial lower surface 54 of the scraper 5, the partial front surface of the comb teeth 6 and the outer surface of the roller brush 4 forms a leeward region through which air cannot pass, and this region forms the suction negative pressure region 500. As shown in fig. 7, since the comb teeth 61 and the flow guide grooves 614 extend up to the scraping plate 5, the front surface of the comb member 6 includes the front tooth surfaces 616 of the comb teeth 61 and the flow guide grooves 614, and thus the front tooth surfaces 616 of the comb teeth, the flow guide grooves 614, the lower surface 54 of the dirt scraping section 5 and the outer surface of the roller brush 4 form the suction negative pressure region 500 in the present embodiment.

When the surface cleaning device cleans, the clean water tank supplies water to the roller brush or the surface to be cleaned, the water enters the water supply port on the ground brush from the water distribution part and flows out to the roller brush through the water supply port, the roller brush is wetted, the roller brush rotates to clean the surface to be cleaned, the dirt suction fan is started, the ground scraping strip scoops dirt and dirt liquid on the surface to be cleaned, under the influence of rotation of the roller brush, the dirt suction nozzle is formed by the gap between the ground scraping strip and the roller brush, the scooped dirt and dirt liquid are sucked into the suction nozzle under the influence of rotation of the roller brush, and move towards the dirt suction port under the guide action of the rear tooth surface of the inclined set comb teeth, at the moment, a part of dirt liquid and dirt are absorbed by the brush body and the brush hair on the roller brush or drive to move upwards along with the roller brush, the comb tooth part is contacted with the roller brush, the tooth tips are tangential with the brush body of the roller brush, so that the comb teeth extend into the brush hair of the roller brush, the method comprises the steps of stripping and scraping the wound matters such as dirt and hair on a brush body from a roller brush by utilizing a comb tooth, continuing to rotate the roller brush to a scraping plate, scraping the dirt and dirt liquid on the brush body of the roller brush by utilizing the scraping plate to scrape the wound matters scraped by the comb tooth off by the brush body, continuing to scrape the wound matters scraped by the comb tooth by utilizing the scraping plate, completely stripping a small amount of the wound matters which are not completely stripped off along with liquid flow, simultaneously, as the front end of the scraping plate is positioned in front of the tooth tip of a penetrating section, the tooth tip of the comb tooth is tangent with the brush body of the roller brush, the comb tooth stretches into brush hair, the front surface of the comb tooth is obliquely arranged, the oblique direction of the front surface of the comb tooth coincides with a tangent line formed by a tangent point, and when the dirt sucking fan works, the front surface of the comb tooth piece, the gaps between the lower surface of the scraping plate and the outer surface of the roller brush are positioned above a dirt sucking port, so that air flows can not pass through, and the areas are leeward areas, the leeward region forms a negative pressure region of the air flow, the lower surface 54 of the suspension section, the front tooth surface 616 of the comb teeth 61 and the gap between the guide groove 614 and the outer surface of the roller brush form a negative pressure region of the air flow, the scraping plate extrudes the scraping brush body, under the negative pressure environment, the dirty liquid is scraped off and then gathered to a certain degree in the negative pressure region between the lower part of the scraping plate and the front surface of the comb teeth, a larger water pressure is generated, meanwhile, a liquid flow pressurizing region is formed, so that the dirty liquid is wrapped with the wound matters such as the hair completely stripped by the scraping plate, dirt is flushed into the region where the guide section of the comb teeth is located under the larger water pressure effect formed by the gravity and the extrusion force of the scraping plate, and is divided into a plurality of liquid flows into the guide grooves between the guide sections by the guide sections of the comb teeth, the liquid flow wraps dirt, hair and other windings into the diversion trenches between the diversion sections, and as the diversion trenches form narrow pipes, the instantaneous water pressure in the diversion trenches is further increased, the flow speed is accelerated, so that the windings stripped from the brush body by the comb teeth or dirt are washed down by the multi-strand liquid flow with increased water pressure, the dirt near the diversion sections and the stripped and loosened hair and other windings are washed down by the liquid flow, the liquid flow moves to the gaps of the penetrating sections of the comb teeth, under the action of the dirt absorbing fan, the gaps of two adjacent penetrating sections form slit effect areas at the dirt absorbing openings, the wind pressure of the instantaneous slit effect areas is increased, the unbalanced air flow is generated at the dirt absorbing openings, the windings, dirt and dirt liquid such as hair are smoothly absorbed into the dirt absorbing openings under the larger wind pressure of the unbalanced air flow, and the dirt and dirt liquid on the surface to be cleaned are absorbed into the dirt absorbing openings, the dirt liquid, dirt and windings adhered on the polluted roller brush are scraped off and sucked into the dirt suction port, the roller brush continuously rotates, the surface to be cleaned is further cleaned, the surface cleaning device cleans the dirt, the dirt liquid, the hair and other windings on the surface to be cleaned, meanwhile, the roller brush is clean, the roller brush contacted with the surface to be cleaned each time is clean, secondary pollution is avoided, the comb teeth are matched with the scraping plate, the hair and other windings are well stripped, the hair and other windings are prevented from being wound on the roller brush, meanwhile, the suction effect of the hair and other windings is obviously improved, the dirt suction efficiency is high, and therefore the overall cleaning effect of the surface cleaning device is greatly improved, and the cleaning efficiency is improved.

In this embodiment, dirt absorbing fan and battery package are installed and are formed an independent power supply in a casing, and this power supply detachable installs on the fuselage, corresponds dirt absorbing fan on the casing of this power supply and is equipped with air inlet duct and air-out wind channel, air inlet duct is linked together with the last dirt containing barrel of fuselage, dirt containing barrel detachable installs on the fuselage, is equipped with the spacing face that is used for giving the barrel wall spacing of dirt containing barrel on the fuselage, spacing face and dirt containing barrel form the clearance, be equipped with the air exit on the fuselage, air-out wind channel and the inside intercommunication of fuselage, discharge dirt absorbing fan exhaust wind through the air exit that sets up on the fuselage, air exit and spacing face and dirt containing barrel form the clearance intercommunication to make wind follow the clearance discharge fuselage of two.

Of course, it will be appreciated that the dirt suction fan and the battery pack may also be disposed inside the body; the clear water tank can also be arranged on the ground brush and is positioned in the accommodating cavity; the bottom surface of the tooth groove can also be formed by inclined planes with low middle, front and rear sides and high sides; alternatively, the bottom surface of the tooth slot may be a curved surface protruding downward, as shown in fig. 9; or the bottom surface of the tooth groove is a cambered surface, the center of the cambered surface is positioned above the tooth groove on the side where the floor brush is positioned, as shown in fig. 10, the lowest point of the bottom surface of the tooth groove is flush with the top surface of the dirt suction port, and the technical scheme which does not deviate from the concept of the invention is also within the protection scope of the invention, and is not exemplified one by one.

Embodiment III:

the difference between the present embodiment and the second embodiment is that the roller brush in the present embodiment is a single roller brush or a single roller brush, and the structures of the comb teeth are different.

As the surface cleaning apparatus of the present invention, as shown in fig. 11 to 13, the roller brush 4 includes a hollow roller 43 and a cleaning member covering the outer surface of the roller 43, the cleaning member includes bristles 41 and a brush body 42, in this embodiment, a transition section 53 is further disposed between the mounting section 51 and the suspending section 52, the mounting section 51 is disposed above the central axis EF of the roller brush 4, the suspending section 52 is disposed coincident with the central axis EF of the roller brush, the connecting portion 62 of the comb member 6 is disposed in contact with the mounting section, the transition section 53 connects the mounting section 51 and the suspending section 52 smoothly, the suspending section 52 is disposed at least partially above the comb teeth 61, and the suspending section 52 is disposed above the central axis EF of the roller brush 4 and is disposed parallel to the central axis EF of the roller brush 4, as shown in fig. 12. The lower end of the connecting portion 62 is lower than the upper end of the dirt absorbing port 24 so that the comb teeth 61 at least partially block the dirt absorbing port 24, the lower end of the connecting portion 62 between two adjacent guiding segments 612 is provided with a guiding groove 614, the penetrating segment 611 is arranged at the lower part of the comb teeth 61, and the guiding groove 614 does not extend to the scraping plate but extends to the front surface of the comb teeth member, that is, the front surface of the comb teeth member 6 is not provided with the comb teeth 61, but the connecting portion 62 of the comb teeth member 6 extends forward to the upper side of the comb teeth 61 and is attached to the hanging segment 52 of the scraping plate 5, the comb teeth are connected with the hanging segment 52 of the scraping plate 5 by the connecting portion 62, the front side surface of the connecting portion 62 forms a guiding surface 621 guiding the liquid flow downwards, therefore, in this embodiment, the front surface of the comb teeth member 6 includes a guiding surface 621 formed by the front side surface of the connecting portion 62, the front tooth surface 616 of the comb teeth 61 and the groove bottom surface of the guiding groove 614, and a part of the lower surface 54 of the scraping plate 5, the front surface of the guiding member 6 and the air flow area between the front surface 614 and the back surface of the brush roll 500 cannot form a negative pressure area. As shown in fig. 13, the suction negative pressure region of the present embodiment is formed by the lower surface 54 of the suspended section 52, the drainage surface 621, the front tooth surface 616 of the comb teeth 61, and the gap between the groove bottom surface of the guide groove 614 and the outer surface of the roller brush. The liquid flow formed by the dirt liquid scraped by the scraping strip is guided by the guiding surface 621, dirt or/and windings stripped from the roller brush by the scraping strip are wrapped and clamped to be flushed to the comb teeth, and then the dirt or/and windings are blown by the guiding grooves.

In this embodiment, as shown in fig. 13, the comb teeth 61 include rear tooth surfaces 617 facing away from the roller brush and front tooth surfaces 616 facing toward the roller brush, and the rear tooth surfaces 617 are inclined toward the suction nozzle 29 to form guide portions. The rear surface 622 of the connecting portion 62 is arranged obliquely downwards relative to the horizontal plane, and the rear tooth surface 617 is connected to the rear surface 622 of the connecting portion 62 and extends downwards along its rear surface 622, where the guide is formed by the rear surface 622 and the rear tooth surface 617. The included angle between the rear tooth surface 617 and the horizontal plane is theta, namely the included angle of the rear tooth surface 617 is theta, and is more than or equal to 30 degrees and less than or equal to 35 degrees, under the guiding effect of the inclined angle theta between the rear tooth surface 617 and the rear surface 22, the sewage and the dirt are easier and more difficult to move to the vicinity of the dirt absorbing port, and the angle just accords with the angle formed by the fact that the dirt absorbing hose passes through the accommodating cavity from the dirt absorbing port and is upwards connected with the dirt absorbing pipe on the dirt accommodating barrel from the rear part of the accommodating cavity, so that the guiding effect is good, and the sewage and the dirt can smoothly enter the dirt absorbing port and move to the dirt absorbing pipe along the dirt absorbing port and the dirt absorbing hose to enter the dirt accommodating barrel, so that the suction efficiency is improved, and the dirt absorbing effect is improved. In this embodiment, a=83°, θ=32°. In this embodiment, the tooth width b=1.5 mm of the comb teeth, the interval l=1 mm between two comb teeth, which ensures that the clearance between the penetrating segments of the comb teeth covering the dirt absorbing mouth is reasonable, and also ensures the area of the slit effect area, and ensures that enough wind pressure can be generated at the position, so as to improve the suction force, the generated suction force is enough to be greater than the adhesive force of dirt or winding or dirt liquid, and the clamping force of the winding or larger particles clamped between the two comb teeth, thereby being more beneficial to the dirt entering the dirt absorbing mouth through the clearance of the comb teeth smoothly. The height h=1mm that the broach covered dirt absorbing mouth downwards, the broach that this kind of scheme formed is less, so can not produce obvious tooth trace on the brush body, and is also less to the motion resistance of roller brush, and the broach length is enough to stretch into the processing of winding thing in the brush hair moreover, and the length that covers dirt absorbing mouth is also less, consequently is little to the great dirt obstruction of surface cleaning device follow to wait to clean the surface, not only can handle the great rubbish of waiting clean surface, can form certain slit effect in dirt absorbing mouth department moreover, also better to the cleaning suction effect of dirt or dirty liquid or winding thing that the fraction was scraped by broach and scraper blade.

Of course, it can be understood that the comb teeth can also be used, as shown in fig. 14, the bottom surface of the tooth groove is not higher than the top surface of the dirt sucking port, and the bottom surface of the tooth groove is a cambered surface which is bent downwards; or, the comb tooth piece comprises a fixing part, a connecting part and comb teeth, wherein the comb teeth only comprise a penetrating section, no flow guide section is arranged, as shown in fig. 15, no flow guide groove is arranged on the connecting part, the front end of the connecting part extends forwards, the top surface of the connecting part is attached to the suspended section of the scraper blade, the front end of the suspended section of the scraper blade protrudes out of the front end of the connecting part, the front surface of the connecting part forms a flow guide area of the comb teeth and the scraper blade, tooth grooves of the comb teeth are horizontally arranged, the bottom surfaces of the tooth grooves of the comb teeth are flush with the upper top surface of the dirt sucking port, and the bottom surfaces of the tooth grooves are plane; as long as the comb teeth partially cover the dirt absorbing port, and the gaps of the comb teeth can form a slit effect, the method plays a role in well treating the wound such as hair and the like, and can generate increased wind pressure to absorb the wound, the dirt liquid and the dirt into the dirt absorbing port well, the technical scheme for improving the dirt absorbing effect without departing from the concept of the invention is within the protection scope of the invention, and no example is given here.

Other structures and beneficial effects of the embodiment are the same as those of the embodiment, and are not described in detail herein.

Example III

The difference between the present embodiment and the second embodiment is that the structure and the mounting position of the blade and the comb member are different.

In this embodiment, the scraping plate 5 only includes a suspension section 52 and an installation section 51, and does not include a transition section, and a spacing area 9 is disposed between the comb member 6 and the scraping plate 5, so that dirt scraped by the scraping plate flows through the spacing area 9 and the tooth slot in sequence. As shown in fig. 16, the comb member 6 is not attached to the scraping plate, the first protrusion 222 is provided with a clamping groove, the comb member 6 is disposed in the clamping groove, the scraping plate 5 is disposed above the first protrusion 222 and is located on the water diversion plate 8, so as to be clamped by the first protrusion 222 and the water diversion plate 8, and the front side surface of the first protrusion forms a spacing area 9 between the comb member and the scraping plate. The interval area is larger with the surface clearance of roller brush, and the pollutant liquid and the winding such as filth or hair that scrape from the scraper blade have more buffer memory spaces for pollutant liquid, filth etc. can rely on gravity to wash the winding such as hair to broach spare position, thereby pass the winding such as hair again and get into the dirt absorbing mouth through the clearance between the broach, although be favorable to the removal of hair winding, nevertheless because the interval area space is big, the interval area itself probably exists the brush hair and can not reach, slightly receives the influence to the self-cleaning effect of interval area.

Of course, it will be appreciated that the comb member may be embedded in the front side wall of the lower housing and located below the first protrusions, and extend forwardly and downwardly from the front portions of the first protrusions; or the comb teeth part and the first protrusion can be integrally formed. The technical solutions that do not deviate from the inventive concept are all within the scope of the present invention, and are not exemplified here.

Other structures and beneficial effects of the embodiment are the same as those of the second embodiment, and are not described in detail here.

It is readily understood by those skilled in the art that the scope of the present application is not limited to the preferred embodiments described above. The technical solutions in the above preferred embodiments may be split and combined by those skilled in the art without departing from the technical principles of the present application, and equivalent changes or substitutions may be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical concepts and/or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. The utility model provides a effectual surface cleaning device of soil pick-up, includes soil pick-up fan and the ground brush that is equipped with the roller brush, the ground brush is equipped with dirt pick-up mouth towards the roller brush, has broach spare and the scraper blade of a plurality of broachs, broach spare, scraper blade respectively with the roller brush butt with strike off the filth on roller brush surface, the soil pick-up fan will scrape dirt/dirty liquid take away through dirt pick-up mouth, its characterized in that, broach spare extends to dirt pick-up mouth from the top outside of dirt pick-up mouth downwards to part shelter from dirt pick-up mouth increase suction pressure.

2. The surface cleaning apparatus of claim 1, wherein the floor brush is further provided with a floor scraping strip in contact with the surface to be cleaned, a soil sucking nozzle is formed between the floor scraping strip and the roller brush, the comb member is provided on a top wall of the soil sucking nozzle, and the comb member is provided with a guide portion facing the soil sucking nozzle.

3. The surface cleaning apparatus of claim 2 wherein the comb teeth include rear tooth surfaces facing away from the roller brush and front tooth surfaces disposed toward the roller brush, the rear tooth surfaces being disposed obliquely toward the dirt pick-up nozzle to form the guide.

4. The surface cleaning apparatus of claim 2 wherein the comb member further comprises a connecting portion, the comb teeth including rear tooth surfaces facing away from the roller brush and front tooth surfaces facing toward the roller brush, the rear tooth surfaces being connected to rear surfaces of the connecting portion, the rear surfaces of the connecting portion and the rear tooth surfaces together forming a guide portion.

5. The surface cleaning apparatus of claim 3 or 4, wherein the trailing tooth surface is inclined downward at an angle θ of 30 ° or less θ or less 35 °.

6. The surface cleaning apparatus of claim 4, wherein the connection extends at least partially downward to the dirt pick-up opening.

7. The surface cleaning apparatus of claim 4, wherein the comb teeth are disposed at a lower end of the connection portion, and the tooth spaces between the comb teeth extend upward along a front surface of the connection portion to form the guide grooves.

8. The surface cleaning apparatus of claim 4, wherein the connection portion abuts the blade, and the tooth slots between the teeth extend upward along the front surface of the connection portion to the lower surface of the blade to form the guide grooves.

9. The surface cleaning apparatus of claim 1 wherein the tooth spaces between the teeth have arcuate surfaces opposite the roller brush, the arcuate surfaces having a center located on a side away from the center of the roller brush.

10. The surface cleaning apparatus of claim 1, wherein a spacer is provided between the comb and the blade such that dirt scraped by the blade flows through the spacer and the tooth space of the comb in sequence.