Surface cleaning device with good decontamination effect

Abstract

The invention discloses a surface cleaning device with good decontamination effect, comprising a floor brush with a roller brush, the floor brush is provided with a decontamination device abutting against the roller brush, the decontamination device comprises a scraping piece, a combing piece located below the scraping piece, the combing piece is provided with a plurality of comb teeth and a connecting portion extending from the comb teeth to the lower surface of the scraping piece, the connecting portion abuts against the lower surface of the scraping piece, the comb teeth and the connecting portion form a front combing surface, the front combing surface abuts against the roller brush, the scraping piece extends in the direction of the roller brush over the front combing surface, the liquid flow scraped by the scraping piece forms a filling area between the connecting portion and the lower surface of the scraping piece, the liquid flow in the filling area gathers and increases pressure to flush the gap between the comb teeth. The surface cleaning device not only has a good effect in treating general garbage, but also does not leave entangled objects such as hair on the roller brush, does not require customers to manually clean the roller brush, has high dirt suction efficiency, good dirt suction effect, is more intelligent and humane, and has a good customer experience.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning appliances, and specifically provides a surface cleaning device. Background Art

[0002] With the development of surface cleaning technology, surface cleaning equipment has gradually entered people's home life and become a common appliance for cleaning floors. Surface cleaning equipment generally includes a body and a floor brush. The floor brush is provided with a roller brush as a cleaning part, and the friction between the roller and the floor achieves cleaning. In the process of the cleaning part cleaning the floor, it is necessary to use a scraping part to synchronously scrape the sewage and adhered dirt on the cleaning part. The surface of the cleaning part is easily entangled with foreign objects such as hair and thread ends. In order to clean the foreign objects entangled on the cleaning roller, some floor brushes are also provided with comb teeth, and the foreign objects on the cleaning roller are scraped off by the comb teeth.

[0003] For example, in the prior art, a scraping roller device is disclosed in which a double scraping component is arranged on a cleaning base, wherein the first scraping component and the second scraping component are configured to contact a part of the cleaning roller when the cleaning roller rotates; the first scraping component comprises a plurality of tooth-shaped protrusions and a gap between two adjacent protrusions, and the plurality of protrusions are configured to at least partially extend into the interior of the cleaning roller when the cleaning roller rotates. Although the first scraping component of the above technical solution is better at removing solid waste adhering to the cleaning roller, and the second scraping component is better at removing excess liquid infiltrating the cleaning roller, the surface cleaning ability of the cleaning base is further improved. This solution provides a spacing area between the first scraping component and the second scraping component so that the liquid flow in the spacing area is sufficient to overcome the surface tension between the comb teeth, thereby introducing the water flow into the gap between the comb teeth and then being collected by the garbage box below. Therefore, when the liquid flow is small, the gravity of the liquid flow itself cannot overcome the surface tension between the comb teeth, which means that part of the garbage will exist in the spacing area and cannot enter the garbage box through the gap between the comb teeth. In addition, the garbage of this product falls into the garbage box in the floor brush by its own gravity. Since the cleaning base does not have a sewage suction fan and a sewage suction port, the liquid flow cannot form a flushing force on the gap between the comb teeth due to insufficient water pressure, and since the gap between the comb teeth is small, the gap between the comb teeth is also prone to have Solid waste is retained, therefore, the cleaning of the first scraping component brings new troubles to the customers. At the same time, since the first scraping component at least partially extends into the interior of the cleaning roller, when the cleaning roller rotates, the resistance to the rotation of the cleaning roller is increased, thereby increasing the workload of the motor for rotating the cleaning roller, the power of the motor is insufficient, and a higher-power motor drive is required, thereby increasing the cost of the surface cleaning device and wasting energy and resources. In addition, long-term use of the first scraping component of such a structure will cause long-term and large-area friction on the brush body of the cleaning roller, which will greatly reduce the service life of the brush body of the cleaning roller. The brush body of the cleaning roller becomes thinner, which in turn leads to a decrease in the cleaning effect of the surface cleaning device after a period of use. Summary of the invention

[0004] The purpose of the present invention is to provide a surface cleaning device, which not only has a good effect in handling general garbage, but also can handle entangled objects such as hair without leaving any residue on the roller brush, and does not require customers to manually clean the roller brush. It has high decontamination efficiency, good decontamination effect, is more intelligent and user-friendly, and provides a good customer experience.

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a surface cleaning device with good decontamination effect, comprising a floor brush with a roller brush, the floor brush is provided with a decontamination device abutting against the roller brush, the decontamination device comprises a scraping member and a combing member located below the scraping member, the combing member is provided with a plurality of comb teeth and a connecting portion extending from the comb teeth to the lower surface of the scraping member, the connecting portion abuts against the lower surface of the scraping member, the comb teeth and the connecting portion form a front combing surface, the front combing surface abuts against the roller brush, the scraping member extends toward the roller brush over the front combing surface, and the liquid flow scraped by the scraping member forms a filling area between the connecting portion and the lower surface of the scraping member, and the liquid flow in the filling area gathers and is pressurized to flush the gaps between the comb teeth.

[0006] Furthermore, a guide groove is provided at the lower part of the connecting part, and the guide groove is connected to the gap between the comb teeth.

[0007] Furthermore, the front combing surface of the connecting portion, the guide groove and the lower surface of the scraping member form a filling area.

[0008] Furthermore, the connecting portion is provided with a guide groove, which extends upward to the lower surface of the scraping member and extends downward to the gap between the comb teeth.

[0009] Furthermore, the guide groove and the lower surface of the scraper form a filling area.

[0010] Furthermore, the surface cleaning device is also provided with a dirt suction fan. When the dirt suction fan is working, the airflow in the guide groove is sucked away, and the liquid flow in the guide groove is gathered and pressurized to flush the gap between the guide groove and the comb teeth.

[0011] Furthermore, the floor brush is provided with a sewage suction port arranged toward the roller brush, and the combing member extends downward and at least partially blocks the sewage suction port.

[0012] Furthermore, the comb teeth extend downward and at least partially cover the sewage suction port, so that the gaps between at least some of the comb teeth form a slit effect area.

[0013] Furthermore, the comb teeth are inclined downward relative to the horizontal plane and extend toward one side of the roller brush, and the angle between the comb teeth and the horizontal plane is not less than 60°.

[0014] Furthermore, the comb teeth extend into the bristles of the roller brush, and the front combing surface is tangent to part of the bristles of the roller brush; or, the comb teeth extend into the bristles of the roller brush, and the extension surface of the front combing surface is located at the periphery of the roller brush and separated from the roller of the roller brush.

[0015] It should be noted that: when the liquid flows in the tube, the flow rate increases when passing through a narrow place. When the airflow flows through a narrow terrain on the ground, it is similar to the flow of liquid in the tube, and the flow rate will also increase. Because the gas is compressible, the density will also increase. The effect of this terrain canyon on the airflow is called the "narrow tube effect", also known as the "canyon effect". The slit effect in the present invention is the same as the canyon effect in daily geography. It refers to the wind sucked into the roller brush cavity from between the roller brush and the scraper bar of the floor brush. When it moves to the suction port, it encounters the gap between the comb teeth covering the suction port. Due to the narrow gap, the flow rate of the wind passing through the narrow gap is accelerated, and the wind pressure increases. Similarly, when the liquid flows from a wider and flatter area into a small slit or pipe, the water pressure increases and the flow rate accelerates. The filling area in the present invention refers to the small slit between the comb tooth piece and the roller brush where the liquid flows into, and the narrow gap formed by the tooth grooves between the comb teeth.

[0016] The slit effect area of ​​the present invention refers to the area formed by the gaps between two adjacent comb teeth arranged corresponding to the sewage suction port when the comb teeth partially cover the sewage suction port. For example, if there are 8 comb teeth covering the sewage suction port, there are 7 comb tooth gaps among the 8 comb teeth, and the area formed by these 7 gaps is the slit effect area.

[0017] The surface cleaning device of the present invention has at least the following beneficial effects:

[0018] 1. The present invention provides a decontamination device directly contacting with a roller brush on a floor brush of a surface cleaning device, wherein the decontamination device comprises a scraping member and a combing member located below the scraping member, wherein the combing member is provided with a plurality of comb teeth and a connecting portion extending from the comb teeth to the lower surface of the scraping member, wherein the connecting portion contacts with the lower surface of the scraping member, wherein the comb teeth and the connecting portion form a front combing surface, wherein the front combing surface contacts with the roller brush, wherein the scraping member extends in the direction of the roller brush over the front combing surface, so that the comb teeth at least partially extend into the bristles of the roller brush, and the liquid flow scraped by the scraping member is between the connecting portion and the scraping member. A filling area is formed on the lower surface of the dirt piece, and the liquid flow in the filling area gathers and increases pressure to flush the gaps between the comb teeth. The cleaning work begins, the roller brush rotates, and the comb teeth first contact the cleaning piece, peeling off the dirt, dirty liquid, hair and other entanglements on the roller brush and moving downward. Even if a small amount of dirt, dirty liquid, hair and other entanglements are not completely peeled off, their adhesion or winding relationship with the roller brush has been loosened, and they continue to move upward with the roller brush to the scraping piece. The front end of the scraping piece is located in front of the tooth tip, and the scraping piece deeply squeezes and scrapes the roller brush, so that the dirty liquid in the roller brush The hair entanglements are completely peeled off, and the again squeezed dirty liquid carries the peeled dirt, hair and other entanglements and flows downward along the front combing surface of the combing member. At this time, the dirty liquid squeezed twice merges to form a larger liquid flow that continues to move downward. Since the gap between the front combing surface of the combing member, the lower surface of the scraping member and the roller brush is small, and this area is partially filled with bristles, the water pressure of the liquid flow in this area increases, and the lower surface of the scraping member and the front combing surface of the combing member form a filling area, and the comb teeth are at least partially arranged The liquid flows that meet in this area carry dirt, hair and other entangled objects into the gaps between the comb teeth and are divided into multiple liquid flows. Since the gaps between the comb teeth are small, the water pressure increases again instantly and the flow rate speeds up. The dirty liquid carries dirt, hair and other entangled objects and is quickly guided downward by the gaps between the comb teeth and is collected in the dirt suction box or enters the dirt storage bucket through the dirt suction port. Therefore, the decontamination effect is good, especially it will not cause hair and other entangled objects to be entangled on the roller brush, and the customer does not need to manually clean the hair and other entangled objects on the roller brush. The cleaning effect is good and the customer experience is good.

[0019] 2. A guide groove is provided at the lower part of the connecting part, and the guide groove is connected to the gap between the comb teeth. When the roller brush rotates, the combing part and the scraping part contact the roller brush in turn, and the hair and other entanglements on the cleaning part are peeled off and scraped off by the comb teeth. At the same time, part of the dirty liquid and dirt are squeezed out, and then the scraping part scrapes and squeezes the cleaning part of the roller brush to scrape off the dirt and dirty liquid on the cleaning part of the roller brush. The dirty liquid flows downward along the connecting part and the guide groove thereon to the area where the gap between the comb teeth is located by gravity and the squeezing force of the scraping part. The liquid flow flushes the hair and other entanglements that are peeled off and loosened by the comb teeth near the guide groove. Since the connecting section is provided with a guide groove The flow trough, at the guide trough, the dirty liquid is divided into multiple liquid flows, and the liquid flow flowing into the guide trough produces a narrow tube effect, the water pressure increases instantly, and the flow rate accelerates. Since the gap between the guide trough and the comb teeth is connected, the dirty liquid continues to flow downward to the gap between the comb teeth under the guidance of the guide trough. Since there are gaps between the comb teeth, the liquid flow carries dirt and hair entanglements into the gaps between the comb teeth. Under the action of a large water pressure, entanglements such as hair, dirt, and dirty liquid pass through the gaps between the comb teeth and are quickly collected and placed in a dirt box or enter a dirt bucket through a dirt suction port, thereby further improving the decontamination efficiency and the decontamination effect, especially the removal effect of entangled dirt such as hair.

[0020] 3. The surface cleaning device of the present invention is also provided with a dirt suction fan. When the dirt suction fan is working, the lower surface of the scraper, the area between the front combing surface and the roller brush is filled with bristles, and the airflow is blocked by the front combing surface and cannot pass through. Therefore, this area forms a leeward area, so that the airflow is forced to flow downward from the guide groove on the connecting part. Since the airflow in this area is drawn away, a certain negative pressure is formed in this area. At this time, the dirty liquid squeezed twice merges to form a larger liquid flow that continues to move downward. Therefore, the water pressure of the liquid flow in this area increases, so that the lower surface of the scraper and the front combing surface of the combing member form a filled area, and the comb teeth to A small part is arranged in the filling area, and the airflow in the guide groove is also drawn away. The liquid flows that converge in this area carry dirt, hair and other entangled objects into the guide grooves of the comb teeth and are divided into multiple liquid flows. The liquid flows quickly rush into the guide grooves to form a narrow tube effect. The water pressure between the guide grooves increases again in an instant, and the flow rate accelerates. Since the gap between the guide groove and the comb teeth is connected, the liquid flow in the guide groove is gathered and pressurized to flush the gap between the guide groove and the comb teeth. At the same time, the dirty liquid carries dirt, hair and other entangled objects and is quickly guided downward by the gap between the comb teeth. Under the action of the sewage suction fan, it is collected in the sewage box or enters the sewage barrel through the sewage suction port.

[0021] 4. The floor brush of the present invention is provided with a sewage suction port arranged toward the roller brush, and the combing member extends downward and at least partially blocks the sewage suction port. When the surface cleaning device is cleaning the surface to be cleaned while scraping the dirt, the sewage suction fan is operated, so that the effective area of ​​the sewage suction port becomes smaller. Therefore, compared with the sewage suction port not blocked by the combing member, the wind pressure at the sewage suction port partially blocked by the combing member is increased, and most of the dirty liquid and dirt as well as entangled objects such as hair sucked from the surface to be cleaned to the sewage suction port can enter the sewage suction port more easily. When the surface cleaning device is cleaning the surface to be cleaned while scraping the dirt, the sewage suction fan is operated, so that the effective area of ​​the sewage suction port becomes smaller. Therefore, compared with the sewage suction port not blocked by the combing member, the wind pressure at the sewage suction port partially blocked by the combing member is increased, and most of the dirty liquid and dirt as well as entangled objects such as hair sucked from the surface to be cleaned to the sewage suction port can enter the sewage suction port more easily. When sucking dirt, the roller brush rotates, and a small part of dirt, dirty liquid and hair entanglements that have not been sucked in continue to move upward with the roller brush, and the combing member and the scraper contact the roller brush in turn, and the comb teeth peel and scrape off the hair and other entanglements on the cleaning member, and a part of the dirty liquid and dirt are squeezed out and scraped off, and the roller brush continues to rotate, and the scraper scrapes and squeezes the cleaning member of the roller brush, and the dirty liquid is squeezed out, and the dirt, dirty liquid and a small part of the hair entanglements that are not completely peeled off on the cleaning member of the roller brush are scraped off, and the dirty liquid carries the hair entanglements and dirt and flows downward by gravity, the squeezing force of the scraper and the increased water pressure. Under the guidance of the combing member, the liquid flow brings the hair and other entanglements that are peeled and loose near the comb teeth to the sewage suction port, which not only completes the treatment of larger particles of garbage and dirty liquid on the surface to be cleaned, but also cleans the roller brush itself that has wiped the surface to be cleaned, and will not cause secondary pollution to the ground due to the dirtiness of the roller brush, thereby greatly improving the cleaning efficiency of the surface cleaning equipment and achieving good cleaning effect.

[0022] 5. The comb teeth extend downward and at least partially block the sewage suction port, so that the gaps between at least part of the comb teeth form a slit effect area, and the gaps between the comb teeth have a portion corresponding to the sewage suction port like the comb teeth. Under the action of the sewage suction fan, the gaps between the comb teeth corresponding to the sewage suction port cause a slit effect to form on the upper part of the sewage suction port, and the wind pressure in the gaps between the comb teeth increases. The scraped dirty liquid carries dirt and entanglements through the gaps between the comb teeth corresponding to the sewage suction port and is smoothly sucked into the sewage suction port, thereby further improving the sewage suction efficiency for handling hair entanglements and improving the sewage suction effect. Not only are the dirt and dirty liquid on the surface to be cleaned sucked away, but also the dirt, dirty liquid and entanglements such as hair on the outer surface of the roller brush are all removed and enter the sewage suction port, so that the roller brush that continues to move is cleaned so that it can continue to clean the surface to be cleaned without secondary pollution, so that the surface cleaning device has a good decontamination effect, the cleaning effect is greatly improved, and the cleaning is more thorough.

[0023] 6. By tilting the comb teeth downward relative to the horizontal plane and extending toward one side of the roller brush, the angle between the comb teeth and the horizontal plane is not less than 60°, so that the comb teeth can extend into the bristles to a reasonable length, and the tooth tips of the comb teeth extend into the cleaning member at a suitable position and can be located below the central axis of the roller brush. At this time, if hair and other entanglements are sucked in, they are not completely entangled on the roller brush. When the roller brush rotates, the hair and other entanglements are scraped up by the comb teeth before they entangle the roller brush, so the treatment effect is better, and the comb teeth will not conflict with the cleaning member too much, thus avoiding the formation of tooth marks on the cleaning member, and even the comb teeth causing greater interference and friction on the cleaning member, thereby reducing the service life of the cleaning member. When the comb teeth are inclined at more than 90° to the horizontal plane, the length of the comb teeth covering the sewage suction port is larger, and the sewage suction area of ​​the sewage suction port is greatly reduced. Although the problem of sucking dirt or dirty liquid or entangled objects peeled off and scraped off by the scraper and comb teeth from the cleaning part of the cleaning roller is solved, the larger dirt sucked from the surface to be cleaned by the surface cleaning machine will be blocked by the comb teeth and cannot enter the sewage suction port, which brings a worse experience to customers. In addition, the depth of the comb teeth inserted into the bristles is shallow, and the problem of entangled objects such as dirt or hair at the roots of the bristles being difficult to peel off may occur. When the angle between the comb teeth and the horizontal plane is less than 60°, the length of the comb teeth covering the sewage suction port is small. Although larger dirt sucked from the surface to be cleaned can be sucked into the sewage suction port, and hair and the like will not be entangled at the tooth tips of the comb teeth, the depth of the comb teeth extending into the bristles increases. Although the stripping effect on the entangled objects on the cleaning member is better, the tooth tips of the comb teeth cause greater interference with the cleaning member of the cleaning roller, which easily forms tooth marks on the cleaning member, which in turn causes secondary contamination of the surface to be cleaned. In addition, since the length of the comb teeth covering the sewage suction port is small, the gap between the comb teeth does not change the wind pressure at the sewage suction port much, so the wind pressure is small. Even if fewer and lighter entangled objects can enter the sewage suction port, the suction force generated by the wind pressure is not enough to overcome the adhesion of the granular dirt between the comb teeth to the gaps between the comb teeth, making it difficult to suck out small granular dirt or small clumps of entangled objects.

[0024] 7. The comb teeth are extended into the bristles of the roller brush, and the front combing surface is tangent to part of the bristles of the roller brush; or, the comb teeth are extended into the bristles of the roller brush, and the extended surface of the front combing surface is located at the outer periphery of the roller brush and separated from the roller of the roller brush, so that the comb teeth can not only peel off the dirt and dirty liquid adhered to the surface of the bristles, but also the comb teeth can extend into the bristles to comb and peel off the dirt or hair and other entanglements adhered to the bristles, and at the same time, the combing part and the scraping part are in contact with the bristles of the roller brush and squeeze the water-absorbing bristles to squeeze out the dirty liquid. At the same time, the contact between the tooth tips of the comb teeth and the bristles does not form a line contact, thereby avoiding the formation of obvious tooth marks on the bristles of the roller brush due to excessive extrusion force caused by the line contact between the tooth tips and the bristles, which will affect the service life of the roller brush over time. Therefore, the decontamination device has high decontamination efficiency and good decontamination effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the surface cleaning device of the present invention;

[0026] Figure 2 is a schematic diagram of a floor brush of the surface cleaning device

[0027] Figure 3 yes Figure 2 A cross-sectional view of the floor brush along the AA direction;

[0028] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0029] Figure 5 yes Figure 2 A front view of a floor brush housing with a water distributor, a scraper and comb teeth installed therein;

[0030] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0031] Figure 7 yes Figure 6 The cross-sectional view of the structure at B along the CC direction;

[0032] Figure 8 is a schematic diagram of the airflow passing through the gap between the comb teeth;

[0033] Fig. 9 / Fig.10 These are other embodiments of the connecting portion of the combing member;

[0034] Fig.11 is a cross-sectional view of the floor brush structure of the surface cleaning device described in the second embodiment;

[0035] Fig.12 yes Fig.11 The enlarged view of point D in the middle;

[0036] Fig.13 Fig.12 Enlarged view of G in the middle;

[0037] Fig.14 yes Fig.13 Schematic diagram of the movement of the dirty liquid scraped off by the middle scraper;

[0038] Fig.15 and Fig.16 is another embodiment of the combing member in the second embodiment;

[0039] Fig.17 It is another embodiment of the surface cleaning device of the present invention.

[0040] The figures are as follows:

[0041] 10. Schematic diagram of airflow path; 1. Body; 11. Handle; 12. Removable power source system; 2. Floor brush; 21. Upper shell; 22. Lower shell; 221. Front side; 222. First flange; 223. Second flange; 224. Bottom; 23. Accommodating chamber; 24. Sewage suction port; 241. Top; 25. Sewage suction hose; 26. Roller brush cover; 27. Roller brush chamber; 28. Floor scraper; 3. Clean water tank; 4. Roller brush; 41. Bristles; 42. Cleaning parts; 43. Roller; 44. First rotating roller; 45. Second rotating roller; 46. Support frame; 500. Suction negative pressure area (filling area) ; 50. Schematic diagram of the liquid flow path; 5. Scraping piece; 51. Installation section; 52. Suspended section; 521. Front end; 53. Transition section; 54. Lower surface; 6. Combing piece; 61. Comb teeth; 611. Through section; 612. Guide section; 613. Gap; 614. Guide groove; 615. Slit effect area; 616. Front tooth surface; 617. Rear tooth surface; 6171. First inclined surface; 6172. Second inclined surface; 618. Tooth tip; 62. Connecting part; 621. Drainage surface; 64. Fixed part; 7. Dirt bucket / dirt box; 71. Open mouth; 72. Upper edge; 73. Guide surface; 8. Water distribution piece. DETAILED DESCRIPTION

[0042] It should be understood by those skilled in the art that the embodiments described below are merely preferred embodiments of the present application, which are merely used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are merely for ease of description and do not indicate or imply that a device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance.

[0043] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] The surface cleaning device of the present invention includes handheld surface cleaning devices, such as floor scrubbers, vacuum cleaners, fabric cleaning machines, etc., and also includes self-propelled surface cleaning devices, such as sweeping and mopping robots, sweeping robots, etc.

[0045] The roller brush of the present invention can be a single roller, a double roller or a crawler roller brush. In the present invention, a single roller brush is taken as an example, the roller brush 4 is installed on the floor brush, the axis direction of the roller brush 4 is defined as the left-right direction, and the horizontal direction perpendicular to the axis of the roller brush 4 is defined as the front-back direction; during the rotation of the roller brush 4, from the left view, the roller brush 4 runs clockwise, that is, the roller brush rotates from bottom to top and then rotates backward, so that the floor brush moves backward. When the surface cleaning device is working, the clean water tank 3 supplies liquid to the roller brush, the roller brush rotates, the cleaning part and the bristles wipe the surface to be cleaned, the scraping part squeezes and scrapes the roller brush, and the dirty liquid and dirt on the bristles and / or the cleaning part are scraped off, the comb teeth scrape off the hair and other entanglements on the bristles and the cleaning part, and the dirt suction fan works to suck the dirty liquid and dirt on the surface to be cleaned, as well as the dirty liquid and dirt scraped off from the roller brush through the dirt suction port.

[0046] As the surface cleaning device with good cleaning effect described in the present invention, Figures 1 to 16As shown, it includes a floor brush 2 with a roller brush 4, and the floor brush 2 is provided with a decontamination device abutting against the roller brush 4, and the decontamination device includes a scraping member 5 and a combing member 6 located below the scraping member 5, and is characterized in that the combing member 6 is provided with a plurality of comb teeth 61 and a connecting portion 62 extending from the comb teeth 61 to the lower surface 54 of the scraping member 5, and the connecting portion abuts against the lower surface of the scraping member, and the comb teeth and the connecting portion form a front combing surface, and the front combing surface abuts against the roller brush, and the scraping member extends toward the roller brush direction over the front combing surface, and the liquid flow scraped by the scraping member forms a filling area 500 at the connecting portion 62 and the lower surface 54 of the scraping member 5, and the liquid flow in the filling area 500 gathers and is pressurized to flush the gap 613 between the comb teeth 61. The roller brush 4 comprises a roller 43 and a cleaning member 42 arranged on the roller 43, and the cleaning member 42 is provided with bristles 41. When the surface cleaning device performs cleaning work, the roller brush 4 rotates, and the combing member 6 first contacts the cleaning member to peel off the dirt, dirty liquid, hair and other entanglements adhered to the surface of the bristles 41 from the roller brush 4 and move downward. Even if a small amount of dirt, hair and other entanglements extending into the bristles 41 are not completely peeled off, their adhesion or winding relationship with the roller brush 4 has been loosened, and they continue to move upward with the roller brush 4 to the scraping member 5. The front end of the scraping member 5 is located in front of the tooth tip 618 of the comb tooth 6, and the scraping member 5 extends into the bristles to a longer depth, so it further squeezes and scrapes the bristles on the roller brush, so that the dirty liquid in the bristles is squeezed out again, the dirt extending into the bristles is also scraped off, and the hair entanglements are completely peeled off. The dirty liquid squeezed out again carries the peeled dirt, hair and other entanglements and flows downward along the front combing surface of the combing member. At this time, the dirty liquid squeezed twice merges to form a larger liquid flow that continues to move downward. Since the gap between the front combing surface of the combing member, the lower surface of the scraping member and the roller brush is small, and this area is partially filled with bristles, the water pressure of the liquid flow in this area increases, and the lower surface of the scraping member and the front combing surface of the combing member form a filling area, and the comb teeth are at least partially arranged in the filling area. The liquid flow that intersects in this area carries dirt, hair and other entangled objects into the tooth grooves of the comb teeth and is divided into multiple liquid flows. The water pressure in the tooth grooves increases again in an instant, and the flow rate is accelerated. The dirty liquid carries dirt, hair and other entangled objects and is quickly guided downward by the gap between the comb teeth and is collected in the dirt suction box or enters the dirt holding bucket through the dirt suction port. Since such a decontamination device is provided on the floor brush of the present invention, the surface cleaning equipment has a good decontamination effect, especially it will not cause hair and other entangled objects to be entangled on the roller brush, and there is no need for customers to manually clean the hair and other entangled objects on the roller brush, so the customer experience is good.

[0047] The specific structure of the surface cleaning device is described below to explain the concept of the present invention in detail.

[0048] Embodiment 1:

[0049] As a surface cleaning device with good decontamination effect described in the present invention, Figures 1 to 10As shown, it includes a floor brush 2 that can move on the surface to be cleaned (generally the ground), and a body 1 hinged to the floor brush 2, wherein the rear portion of the floor brush 2 is pivotally connected to the lower portion of the body 1, and a driving handle 11 is arranged at the upper end of the body 1, and a dirt bucket 7, a clean water tank 3 and a dirt suction fan (not shown in the figure) for sucking dirty liquid and / or dirt into the dirt bucket 7 are arranged on the body 1, and a detachable power source system 12 is also arranged on the body 1, and the dirt suction fan and a battery pack are arranged in the power source system, and the power source system is arranged above the dirt bucket and on the same side as the dirt bucket, and a dirt suction port 24 is arranged on the floor brush 2, and the floor brush 2 includes an upper shell 21 and a lower shell 22, and the upper shell 21 is buckled on the lower shell 22 to form a accommodating chamber 23, and the front side of the bottom 222 of the lower shell 22 is also provided with a floor scraper 28 arranged obliquely downward, and the floor scraper 28 in this embodiment is made of hard rubber. The sewage suction port 24 is arranged on the front side 221 of the lower shell 22. The sewage suction port is rectangular and its four corners are rounded. A sewage suction hose 25 connected to the sewage suction port 24 is arranged in the accommodating chamber 23. The sewage suction hose 25 passes upward from the rear side of the accommodating chamber 23 and is connected to the sewage suction pipe (not shown in the figure) on the sewage bucket 7. The floor brush 2 is also provided with a roller brush 4 for cleaning the surface to be cleaned and a scraping member 5 and a combing member 6 for cleaning the roller brush 4. The scraping member in this embodiment is a metal scraper. The roller brush 4 includes a first rotating roller 44, a second rotating roller 45, a support frame 46 connecting the first rotating roller 44 and the second rotating roller 45, and a cleaning member sleeved on the outer surface of the first rotating roller 44 and the second rotating roller 45. The cleaning member includes a cleaning member 42 and bristles 41. The diameters of the first rotating roller 44 and the second rotating roller 45 are equal. The scraper 5 is arranged above the central axis EF of the first rotating roller 44. The suspended section 52 of the scraper 5 is arranged to be tilted downward. The roller brush 4 is arranged on the front side of the floor brush 2. The front side of the floor brush 2 is also provided with a roller brush cover 26 covering the roller brush 4. The front side surfaces 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 scraper 5 and the combing member 6 are arranged in sequence at the suction port 24. Above, a water dividing member 8 is further provided above the scraping member 5, and the lower surface of the scraping member 5 is at least partially fitted with the upper surface of the combing member 6, and the combing member 6 is provided with a plurality of comb teeth, and the front end 521 of the scraping member 5 is located in front of the tooth tip 618 of the comb teeth 61 and abuts against the cleaning member 42 of the roller brush 4, and the comb teeth 61 at least partially extend into the bristles 41 of the roller brush 4, and the lower surface 54 of the scraping member 5 and the front combing surface of the combing member 6 form a filling area 500, and the comb teeth are at least partially arranged in the filling area.At the beginning of the cleaning work, the roller brush rotates, and the comb teeth first contact the roller brush to peel off the dirt, dirty liquid, hair and other entanglements on the roller brush and move downward to the dirt suction port. Even if a small amount of dirt, dirty liquid, hair and other entanglements have not been completely peeled off, their adhesion or winding relationship with the roller brush has been loosened, and they continue to move upward with the roller brush to the scraper. The front end of the scraper is located in front of the tooth tip. The scraper deeply squeezes and scrapes the roller brush, so that the dirty liquid in the roller brush is squeezed out again, and this small amount of dirt is also scraped off, and the hair entanglements are completely peeled off. The dirty liquid squeezed out again carries the peeled dirt, hair and other entanglements and flows downward along the front combing surface of the combing member. At this time, the dirty liquid squeezed twice merges to form The larger liquid flow continues to move downward. Since the gap between the front combing surface of the combing member 6, the lower surface 54 of the scraping member 5 and the roller brush 4 is small, and this area is partially filled with bristles, the water pressure of the liquid flow in this area increases. The lower surface 54 of the scraping member 5 and the front combing surface of the combing member 6 form a filling area. The comb teeth are at least partially arranged in the filling area. The liquid flow that intersects in this area carries dirt, hair and other entangled objects into the gap between the comb teeth and is divided into multiple liquid flows. The water pressure of the multiple liquid flows in the gap between the comb teeth is instantly increased again, and the flow rate is accelerated. The dirty liquid carries dirt, hair and other entangled objects through the gap between the comb teeth and is quickly guided downward to the sewage suction port, and is sucked into the sewage suction port under the action of the sewage suction fan.

[0050] like Figure 5 and Figure 6As shown, the combing member 6 is provided with a plurality of comb teeth 61, and the width of the guide groove is not greater than the gap between the comb teeth, so as to ensure that a sufficiently large water pressure is generated in the guide groove, so that the dirty liquid carrying the dirt or hair entanglements can flow downward quickly without getting stuck and adhering here. The equivalent tooth width of the comb teeth is b, 1.4mm≤b≤1.6mm, and the tooth width is reasonable, which not only ensures the contact area between the comb teeth and the cleaning member, thereby ensuring that the dirt or hair entanglements on the cleaning member can be peeled off without any residue, but also ensures the number of comb teeth and guide grooves, thereby ensuring that the liquid flow generates sufficient water pressure between the comb teeth, and the generated water pressure is sufficient to be greater than the adhesion of the dirt or entanglements or dirty liquid, so that the dirt or hair entanglements between the comb teeth are flushed downward, thereby ensuring the effect of removing the hair entanglements, so as to make it more conducive for the dirt to smoothly pass through the gaps between the comb teeth into the suction port. When the comb width b is less than 1.4, the comb width is too narrow. Although the comb teeth can enter more bristles to remove hair and other entanglements, the strength of the comb teeth is weakened, and the scraping surface of the comb teeth per unit length is reduced, which is not conducive to scraping dirt, and the service life is also reduced. At the same time, the comb teeth are too thin, which reduces the life of the bristles. When the comb width b is greater than 1.6, the comb width is too wide, and the number of teeth covering the suction port per unit length is reduced. Since hair and other entanglements are thin, there are more bristles in the processing surface of the comb covering roller brush. The comb teeth cannot be inserted into each strand of bristles. If the entanglement is close to the middle of the comb teeth instead of at the edge of the comb teeth, it is not easy to be combed and peeled. At the same time, the distribution of the comb gap is also reduced, and the water pressure in the comb gap is insufficient, which reduces the flushing force on the entanglement and is not conducive to the hair entanglement being carried downward by the liquid flow.

[0051] like Figure 4 As shown, the comb teeth 61 of the combing member 6 at least partially extend into the bristles of the brush 41 of the roller brush 4, and the comb teeth 61 include a through section 611 and a guide section 612. The comb teeth 61 include a rear tooth surface 617 away from the roller brush 4 and a front tooth surface 616 arranged toward the roller brush. When viewed from the front side of the roller brush 4 toward the sewage suction port, the comb teeth 61 extend downward and at least partially cover the sewage suction port 24. A gap 613 penetrating the front tooth surface 616 and the rear tooth surface 617 is provided between the two adjacent through sections. The gap 613 between the two adjacent through sections 611 forms a slit effect area 615 at the sewage suction port 24, as shown in FIG. Figure 8As shown, 10 is a schematic diagram of the movement of airflow passing through the gap of the comb teeth. When the suction fan is working, the wind pressure at the gap 613 increases and the wind speed also increases, while the wind pressure near the suction port not covered by the comb teeth is smaller than here, resulting in an unbalanced airflow at the suction port. The hair and other entanglements, dirt, and dirty liquid in the gap of the comb teeth are smoothly sucked into the suction port at a faster wind speed under the action of the larger wind pressure of the unbalanced airflow, thereby further improving the suction efficiency. Therefore, the accumulation of hair and solid dirt in the gap of the comb teeth is avoided, especially for the stripping and suction of entanglements. The effect is better, and there will be no dirt or entanglements left on the comb teeth, which brings a good experience to customers.

[0052] like Figure 3 As shown, the front side of the bottom 224 of the lower shell 22 is also provided with a floor scraper 28 in contact with the surface to be cleaned, the floor scraper 28 is located below the sewage suction port 24 and a sewage suction nozzle 29 is formed between the roller brush 4, and a sewage suction channel 20 arranged toward the sewage suction port 24 is provided between the sewage suction port 24 and the sewage suction nozzle 28, and the comb teeth 61 form a part of the top wall of the sewage suction channel 20. The comb teeth 61 form a guide channel toward the sewage suction port 24 in the sewage suction channel 20, and the front tooth surface 616 of the comb teeth 61 extends downward and partially blocks the sewage suction port 24. The area of ​​the guide channel at the sewage suction port 24 blocked by the comb teeth 61 suddenly becomes smaller, so the wind pressure increases, and the suction force near the sewage suction port 24 blocked by the comb teeth 61 increases. Under the increased suction force and the guiding effect of the comb teeth 61, the retention and adhesion of dirty liquid and dirt at the sewage suction port 24 are reduced. Most of the dirty liquid and dirt can enter more effectively and quickly when moving to the sewage suction port blocked by the comb teeth, and continue to be sent upward to the sewage bucket, thereby improving the sewage suction efficiency.

[0053] like Figure 4 , Figure 5 and Figure 6As shown, the front side surface 221 of the lower shell 22 is provided with a first convex edge 222 and a second convex edge 223 protruding forward, the sewage suction port 24 is arranged on the front side surface 221 between the first convex edge 222 and the second convex edge 223, the combing member 6 includes comb teeth 61, a fixing portion 64 and a connecting portion 62 connecting the fixing portion and the comb teeth, the comb teeth 61 are arranged to protrude downward from the connecting portion 62, the longitudinal section of the comb teeth is a triangle or a nearly triangle, and a guide groove 614 is further provided between the two adjacent guide sections 612, the guide groove 614 is provided to guide the flow. The groove 614 is arranged on the connecting part, and the guide section 612 is connected as a whole through the connecting part, that is, the guide groove 614 is opened on the connecting part 62 between two adjacent guide sections 612, and the guide groove 614 extends upward to the lower surface of the scraping section 5, that is, the guide groove 614 extends from the lower end of the connecting part 62 to the top of the connecting part 62. Therefore, the comb teeth 61 extend upward along the front combing surface of the connecting part 62 to the top of the connecting part, and the thickness of the comb teeth gradually decreases to be flush with the front end of the connecting part. The tooth grooves of the two adjacent comb teeth 61 include the guide groove 614 and the gap between the two adjacent comb teeth. The section from the bottom end of the connecting portion 62 to the tooth tip 618 is a through section. The guide groove 614 is arranged corresponding to the gap 613 of the through section 611. The scraper 5 includes a mounting section 51 and a suspended section 52. The mounting section 51 is arranged above the fixing portion 64. The lower surface of the mounting section 51 and the upper surface of the fixing portion 64 are fitted together. The top surface of the connecting portion 62 is at least partially fitted with the suspended section 52. The front end 521 of the suspended section 52 protrudes forward from the connecting portion 62. A water-dividing member 9 is arranged above the scraper 5. The mounting section 51 and the fixing portion 64 of the scraper 5 are fitted and clamped between the first convex edge 223 and the lower surface of the water-dividing member 9. The comb tooth 61 includes a rear tooth surface 617 facing away from the roller brush 4 and a front tooth surface 617 arranged toward the roller brush. 16, the front tooth surface and the rear tooth surface are rectangles extending from the connecting portion to the tooth tip, the rear tooth surface 617 is inclined toward the direction of the sewage suction port 24, the width of the comb teeth 61 is b, the tooth width b is the width of the rectangle, the distance between the gaps 613 of two adjacent comb teeth 61, that is, the spacing is L, that is, the groove width of the tooth groove and the distance of the gap, that is, the spacing L are equal, wherein b>L, and the spacing L satisfies 0.7mm≤L<1.5mm, ensuring that the gap between the through sections of the comb teeth covering the sewage suction port is reasonable, and also ensuring the area of ​​the slit effect zone, ensuring that sufficient wind pressure can be generated here to enhance the suction force, and the suction force generated is sufficient to be greater than the adhesion of dirt or entangled objects or dirty liquid, and the clamping force of the entangled objects or larger particles clamped in the spacing between the two comb teeth, so as to facilitate the dirt to smoothly pass through the gap between the comb teeth into the sewage suction port.The height of the through section 611 covering the sewage suction port 24 is h, and the height of the sewage suction port is H, wherein 0.7mm<h≤3.5mm, which ensures that the length of the through section covering the comb teeth at the sewage suction port is sufficient to increase the wind pressure of the through section covering the sewage suction port, so that the suction force generated by the increased wind pressure is sufficient to resist the adhesion force of dirt or entangled objects or dirty liquid in the gap, and the clamping force of entangled objects or larger particles clamped in the distance between two comb teeth, thereby making it easier for dirt to pass through the gap between the comb teeth and enter the sewage suction port. In this embodiment, L=1.2mm, h=3mm, and the comb teeth formed by this scheme have a reasonable length. The point where the tooth tip 618 is tangent to the cleaning member 42 of the roller brush 4 is also slightly farther from the central axis EF of the roller brush, that is, the tooth tip of the comb teeth can contact the cleaning member earlier, and the stripping effect on the entanglement on the roller brush is better. The comb teeth extend into the bristles for a long time, and the contact area between the comb teeth and the bristles is large. No obvious tooth marks will be produced on the cleaning member, and the comb teeth have little resistance to the movement of the roller brush. In addition, the length of the comb teeth covering the suction port is sufficient, which makes it easier to produce a slit effect. It is not only beneficial for the surface cleaning device to suck away larger garbage from the surface to be cleaned, but also a strong slit effect can be formed at the place where the comb teeth cover the suction port, thereby generating a strong suction force, and the cleaning and suction effect of a small part of the dirt or dirty liquid or entanglement scraped off by the comb teeth and the scraping member is also better.

[0054] like Figure 4As shown, by extending the comb teeth 61 into the bristles 41 of the roller brush 4, the front combing surface is tangent to part of the bristles 41 of the roller brush 4. In this embodiment, since the guide groove extends upward to the scraping member, the front combing surface is the front tooth surface 616 of the comb teeth 61, so that the comb teeth can not only peel off the dirt and dirty liquid adhered to the surface of the bristles, but also the comb teeth can extend into the bristles to comb and peel off the dirt or hair and other entanglements adhered to the bristles. At the same time, the combing member and the scraping member are in contact with the bristles of the roller brush and squeeze the water-absorbing bristles to squeeze out the dirty liquid. At the same time, the contact between the tooth tips of the comb teeth and the bristles does not form a line contact, which avoids the formation of obvious tooth marks on the bristles of the roller brush due to excessive extrusion force caused by the line contact between the tooth tips and the bristles. Over time, the service life of the roller brush is affected. Therefore, the decontamination device has high decontamination efficiency and good decontamination effect. The comb teeth 61 are inclined downward relative to the horizontal plane and extend toward one side of the roller brush 4. The angle between the comb teeth 61 and the horizontal plane is not less than 60°. In this embodiment, the longitudinal section of the comb teeth is a triangle. The comb teeth 61 have a front tooth surface 616 and a rear tooth surface 617 that are inclined downward. The angle a of the front tooth surface 616 that is inclined downward along the top 241 of the sewage suction port 24 is 80°≤a<90°. The tooth tip 618 of the comb teeth is located below the central axis of the roller brush, so that the position where the tooth tip of the comb teeth is tangent to the cleaning member of the roller brush is reasonable, and the length of the comb teeth that can be extended into the bristles of the cleaning member is reasonable, so that the comb teeth can effectively scrape off the hair and other entanglements that are about to be entangled on the roller brush, and will not conflict with the cleaning member too much or even form tooth marks. The rear tooth surface 617 is arranged to be inclined downward along the connecting portion 62, and 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 to the connecting portion 62, and the inclination angle of the first inclined surface 6171 is β, wherein a≤β≤90°, and here the inclination angle β of the first inclined surface 6171 is greater than or equal to the inclination angle of the front tooth surface 616, and the maximum is 90°.The angle between the second inclined surface 6172 and the horizontal plane is θ, so the inclination angle of the second inclined surface is θ, and the inclination angle θ of the second inclined surface 6171 satisfies 30°≤θ≤35°. In this embodiment, the inclination angle of the rear tooth surface 617 refers to the inclination angle θ of the second inclined surface 6172. Therefore, under the guidance of the inclination angle θ of the second inclined surface 6172, it is easier and more difficult for the dirty liquid and dirt to move smoothly to the vicinity of the suction port. This angle just meets the angle formed by the suction hose passing through the accommodating chamber from the suction port and connecting with the suction pipe on the sewage bucket from the rear part of the accommodating chamber upward, so the guiding effect is good. The first inclined surface 6171 plays a good blocking and diverting role when the liquid flow after passing over the comb teeth 61 is large and flows back, especially for the liquid flow that is squeezed and surges up after entering the space between the comb teeth and the sewage suction port along the first inclined surface, it has a good blocking and diverting effect, so that the liquid flow flushes the back of the comb teeth and then turns to the sewage suction port again. The setting of the first inclined surface and the second inclined surface provides a buffer and diverting space for the liquid flow, so that the dirty liquid and dirt can enter the sewage suction port more smoothly and move along the sewage suction port and the sewage suction hose to the sewage suction pipe and enter the sewage storage bucket, which not only improves the suction efficiency, but also improves the sewage suction effect. In this embodiment, the inclination angle a of the front tooth surface is 84°, the inclination angle θ of the second inclined surface is 33°, and the inclination angle β of the first inclined surface is 90°. The tooth thickness of the comb teeth gradually decreases from bottom to top, and the tooth groove gradually becomes shallower from top to bottom, which enhances the diversion effect, and at the same time allows the comb teeth to better extend into the comb hair and generate less resistance to the movement of the roller brush, and ensures that the tooth groove close to the scraper is shallower. Since the water pressure and negative pressure here are the smallest, the tooth groove is shallow, and the space for dirty liquid or dirt to remain is small, so a large amount of dirt or dirty liquid will not remain here. The bottom surface of the tooth groove is an arc surface, and the center of the arc surface is located on the side where the roller brush is located. With such a structure, the diversion effect is better, so that the dirty liquid or dirt runs more smoothly in the tooth groove, and the probability of accumulation is reduced.

[0055] like Figure 4As shown, the suspended section 52 of the scraping member 5 is in conflict with the cleaning member 42 of the roller brush 4, and the tooth tip of the through section 611 of the comb tooth 61 extends into the wetted bristles, so that the front tooth surface 616 of the comb tooth 61 intersects with the wetted part of the bristles, and the tooth tip 618 of the comb tooth 61 is tangent to the cleaning member 42. The tangent line MN formed by the tooth tip of the comb tooth and the cleaning member 42 of the roller brush 4 is located in the front tooth surface 616, so that the comb teeth 61 of the combing member 6 can extend into the bristles 41 of the cleaning member 42, and the combing member 6 and The contact surface of the cleaning member 42 of the roller brush 4 is greatly reduced, and only the tooth tip 618 is in line contact, so that the comb teeth 61 of the combing member 6 comb the bristles 41 downward along the tangential direction of the cleaning member 42 of the roller brush 4, which can effectively scrape and peel off the entanglement on the surface of the roller brush 4 and the dirt hidden in the roots of the bristles 41. The tooth tip 618 will not form tooth marks on the cleaning member 42 and will not increase the resistance of the roller brush to rotate, which greatly reduces the problem of stalling of the drive motor that drives the roller brush to rotate due to the increase in resistance.

[0056] When the dirt suction fan is working, the airflow passes through the dirt suction port to form a wind pressure zone. The area between the front combing surface of the combing member 6 and the lower surface 54 of the scraping member 5 above the dirt suction port and the roller brush does not correspond to the dirt suction port and is filled with bristles. The airflow cannot pass through and reach it, so a suction negative pressure zone 500 is formed in this area. Figure 7 The scraping member 5 squeezes and scrapes the cleaning member 42. Under the negative pressure environment, after the dirty liquid is scraped off, the suction negative pressure area between the bottom of the scraping member 5 and the front combing surface of the combing member 6 gathers to a certain extent, generating a large water pressure, causing the liquid flow to rush to the guide section of the comb teeth, and is divided into multiple streams by the guide section of the comb teeth and enters between the guide sections, so that the instantaneous water pressure between the guide sections of the comb teeth is further increased. Therefore, under the action of the multiple streams with increased water pressure, the entangled objects or dirt peeled off from the cleaning member by the comb teeth are washed away. The liquid flow drives dirt, hair and other entangled objects to flow through the area where the front tooth surface of the comb teeth contacts the cleaning part of the roller brush to the through section at the suction port, thereby ensuring that no entangled objects remain in the gaps between the comb teeth. This not only solves the problem of the roller brush being entangled and the problem of hair and other entangled objects being entangled between the gaps between the comb teeth, but also enables dirty liquid, dirt, hair and other entangled objects to quickly flow to the gaps between the comb teeth at the suction port, and be smoothly sucked into the suction port by the greater wind pressure, thereby improving the suction efficiency and the suction effect. Therefore, the suction negative pressure area of ​​the airflow is also the filling area of ​​the dirty liquid.

[0057] In this embodiment, the mounting section 51 is arranged above the central axis EF of the roller brush 4, and a transition section 53 is also arranged between the mounting section 51 and the suspended section 52. The suspended section 52 is arranged to be tilted downward along the diameter of the roller brush 4 and to abut against the cleaning member, so that the transition section 53 smoothly connects the mounting section 51 and the suspended section 52, and the fixing portion 63 of the combing member 6 is arranged in close contact with the mounting section. The suspended section 52 is at least partially arranged above the comb teeth 61, and the front end 521 of the suspended section 52 of the scraping member 5 is located in front of the tooth tip 618 of the through section 611, and the tooth tip 618 is tangent to the cleaning member 42 of the roller brush 4. The area between the partial lower surface 54 of the scraping member 5, the partial front combing surface of the combing member 6 and the outer surface of the roller brush 4 forms a leeward area that airflow cannot pass through, and this area forms a suction negative pressure area 500, such as Figure 7 As shown. Since the comb teeth 61 and the guide grooves 614 extend upward to the scraping member 5, the front combing surface of the combing member 6 includes the front tooth surface 616 of the comb teeth 61 and the guide grooves 614. Therefore, the front tooth surface 616 of the comb teeth, the guide grooves 614, the lower surface 54 of the scraping section 5 and the outer surface of the roller brush 4 in this embodiment form a suction negative pressure area 500.

[0058] When the surface cleaning device is cleaning, 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 floor brush from the water divider, and flows out to the roller brush through the water supply port, the roller brush is wetted, and the roller brush rotates to clean the surface to be cleaned, and at the same time the sewage suction fan is started, the floor scraper strip scoops up the dirt and dirty liquid on the surface to be cleaned, and under the influence of the rotation of the roller brush, the gap between the floor scraper strip and the roller brush forms a sewage suction nozzle, and under the influence of the rotation of the roller brush, the scooped dirt and dirty liquid are sucked into the suction nozzle, and move toward the sewage suction port and enter the sewage suction port under the guidance of the inclined rear tooth surface of the comb teeth, at this time, a part of the dirty liquid and dirt adhering to the roller brush are absorbed by the cleaning member and bristles on the roller brush or driven to move upward with the roller brush, the combing member contacts the cleaning member, and the combing member contacts the cleaning member, and the combing member moves upward. The teeth extend into the bristles of the roller brush, and the tooth tips of the comb teeth are located below the central axis of the roller brush, or further the tooth tips are tangent to the cleaning member of the roller brush, so that the dirt and hair and other entanglements adhered to the bristles on the cleaning member can be peeled off, scraped off or loosened by the comb teeth, and then the roller brush continues to rotate to the scraping member, and the scraping member is used to scrape and squeeze the cleaning member of the roller brush to scrape off the dirt and dirty liquid on the cleaning member of the roller brush, and at the same time, the entanglements scraped off by the comb teeth are continued to be scraped by the scraping member, and a small amount of entanglements that are not completely peeled off are completely peeled off and fall with the liquid flow. At the same time, since the front end of the scraping member is located in front of the tooth tips of the penetration section, the tooth tips of the comb teeth are tangent to the cleaning member of the roller brush, the comb teeth extend into the bristles, and the front combing surface of the comb teeth is inclined, and the inclination direction of the front of the comb teeth The tangent formed by the intersection point coincides with that of the tangent line. When the suction fan is working, the airflow cannot pass through the gap between the front combing surface of the combing element, the lower surface of the scraping element and the outer surface of the roller brush in the area above the suction port. Therefore, these areas are leeward areas, and the leeward area forms a negative pressure area for the airflow. The lower surface 54 of the suspended 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 suction negative pressure area for the airflow. The scraping element squeezes and scrapes the cleaning element. Under the negative pressure environment, after the dirty liquid is scraped off, the suction negative pressure area between the bottom of the scraping element and the front combing surface of the combing element gathers to a certain extent, generating a large water pressure and forming a filling area at the same time, so that the dirty liquid carries the entangled objects such as hair that are completely peeled off by the scraping element, and the dirt is re-reacted. Under the action of the large water pressure formed by the force and the squeezing force of the scraping member, the liquid flows to the area where the guide section of the comb teeth is located, and is divided by the guide section of the comb teeth into multiple streams that enter the guide grooves between the guide sections. Under the guidance of the guide section of the comb teeth, the liquid flow carries dirt, hair and other entanglements into the guide grooves between the guide sections. Since the guide grooves form narrow tubes, the instantaneous water pressure in the guide grooves is further increased, and the flow rate is accelerated. Therefore, under the action of multiple streams with increased water pressure, the entanglements or dirt peeled off from the cleaning member by the comb teeth are flushed. The liquid flow flushes the dirt near the guide section, the loosened hair and other entanglements downwards, and moves to the gap of the through section of the comb teeth. Under the action of the suction fan, the gap between two adjacent through sections forms a slit effect area at the suction port.The wind pressure in the instantaneous slit effect area increases, and an unbalanced airflow is generated at the sewage suction port. Under the action of the larger wind pressure of the unbalanced airflow, entanglements such as hair, dirt, and dirty liquid are smoothly sucked into the sewage suction port, so that not only the dirt and dirty liquid on the surface to be cleaned are sucked into the sewage suction port, but also the dirty liquid and dirt and entanglements adhered to the contaminated roller brush are scraped off and sucked into the sewage suction port. The roller brush continues to rotate, thereby further cleaning the surface to be cleaned. Such a surface cleaning device can clean the dirt, dirty liquid and entanglements such as hair on the surface to be cleaned more cleanly, and at the same time, it can also clean the roller brush more cleanly, so that each time the roller brush contacts the surface to be cleaned, it is also cleaner, and no secondary pollution will be generated. The structure of the comb teeth cooperates with the scraping piece to peel off the entanglements such as hair, and avoid the entanglement of the hair and other entanglements on the roller brush. At the same time, the suction effect of the entanglements such as hair is significantly improved, and the suction efficiency is high, thereby greatly improving the overall cleaning effect of the surface cleaning device and improving the cleaning efficiency.

[0059] In this embodiment, the sewage suction fan and the battery pack are installed in a shell to form an independent power source, and the power source is detachably mounted on the fuselage. The shell of the power source is provided with an air inlet duct and an air outlet duct corresponding to the sewage suction fan. The air inlet duct is connected with a sewage bucket on the fuselage. The sewage bucket is detachably mounted on the fuselage. A limiting surface for limiting the barrel wall of the sewage bucket is provided on the fuselage. A gap is formed between the limiting surface and the sewage bucket. An exhaust port is provided on the fuselage. The air outlet duct is connected with the inside of the fuselage to discharge the air discharged by the sewage suction fan through the exhaust port provided on the fuselage. The exhaust port is connected with the limiting surface and the sewage bucket to form a gap, so that the air is discharged from the fuselage through the gap between the two.

[0060] Of course, it is understandable that the comb teeth can also be of such a structure that the comb teeth extend into the bristles of the roller brush, and the extension surface of the front combing surface is located at the outer periphery of the roller brush and is separated from the roller of the roller brush, so that the front combing surface is not in horizontal or nearly horizontal contact with the bristles of the roller brush, so that the tooth tips of the comb teeth do not form an obvious line contact with the bristles of the roller brush, and when the front combing surface collides with the roller brush, no large resistance will be generated, and no large squeezing force will be formed on the bristles to cause tooth marks due to friction, or even damage the bristles after multiple scrapings. This does not deviate from the concept of the present invention and is within the protection scope of the present invention, and examples will not be given one by one here.

[0061] Of course, it is understandable that we can also set the suction fan and the battery pack inside the fuselage; the clean water tank can also be set on the floor brush and located in the accommodating cavity; the bottom surface of the tooth groove can also be composed of an inclined surface with a low middle and high front and rear sides; or, the bottom surface of the tooth groove can be a curved surface convex downward, such as Fig. 9 As shown; or the bottom surface of the tooth groove is an arc surface, and the center of the arc surface is located above the tooth groove on the side where the floor brush is located, such as Fig.10 As shown, the lowest point of the bottom surface of the tooth groove is flush with the top surface of the sewage suction port; such technical solutions that do not deviate from the concept of the present invention are also within the protection scope of the present invention, and will not be given one by one here.

[0062] Embodiment 2:

[0063] The difference between this embodiment and the first embodiment is that the roller brush in this embodiment is a single roller brush or, and the structure of the comb teeth is different.

[0064] As the surface cleaning device described in the present invention, Figures 11 to 14 As shown, the roller brush 4 includes a hollow roller 43 and a cleaning member covering the outer surface of the roller 43, and the cleaning member includes bristles 41 and a cleaning member 42. In this embodiment, a transition section 53 is further provided between the mounting section 51 and the suspended section 52, the mounting section 51 is arranged above the central axis EF of the roller brush 4, the suspended section 52 is arranged to coincide with the central axis EF of the roller brush, the connecting portion 62 of the combing member 6 is arranged to fit the mounting section, the transition section 53 smoothly connects the mounting section 51 and the suspended section 52, the suspended section 52 is at least partially arranged above the comb teeth 61, the suspended section 52 is located above the central axis EF of the roller brush 4, and is arranged parallel to the central axis EF of the roller brush 4. The lower end of the connecting portion 62 is lower than the upper end of the sewage suction port 24 so that the comb teeth 61 at least partially cover the sewage suction port 24. The lower end of the connecting portion 62 between two adjacent guide sections 612 is provided with a guide groove 614. The through section 611 is arranged at the lower part of the comb teeth 61. Since the tooth groove, i.e., the guide groove 614, does not extend to the scraping member but extends to the front combing surface of the combing member, that is, the comb teeth 61 are not all arranged on the front combing surface of the combing member 6, but the connecting portion 62 of the combing member 6 extends forward to the top of the comb teeth 61 and is connected to the suspended section 52 of the scraping member 5. The comb teeth are connected to the suspended section 52 of the scraping member 5 by a connecting portion 62, and the front side surface of the connecting portion 62 forms a drainage surface 621 that guides the liquid flow downward. Therefore, the front combing surface of the combing member 6 in this embodiment includes the drainage 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 bottom surface of the guide groove 614. The area between the partial lower surface 54 of the scraping member 5, the front combing surface of the combing member 6, the guide groove 614 and the outer surface of the roller brush forms a leeward area that the airflow cannot pass through, and this area forms a suction negative pressure area 500. The suction negative pressure area of ​​this embodiment is formed by the gap between 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 bottom surface of the guide groove 614 and the outer surface of the roller brush, as shown in FIG. Fig.14shown. In this way, the liquid flow formed by the dirty liquid squeezed and scraped off by the scraper bar passes through the drainage surface 621, and washes the dirt and / or entanglements peeled off from the roller brush by the scraper bar to the comb teeth, and then is swept by the wind flow of the guide groove. Since the drainage area and the guide groove are leeward areas where air cannot pass, a suction negative pressure area is formed. Therefore, the water pressure of the liquid flow in the drainage area is increased, and when passing through the narrow area of ​​the guide groove, a narrow tube effect is generated, so the water pressure increases instantly, and a filling area is formed at the same time, which accelerates the liquid flow to carry the dirt and / or entanglements through the guide groove of the guide section, smoothly enters the gap of the through section, and forms a slit effect between the gaps of the comb teeth at the corresponding suction port. Therefore, a slit effect area is formed between the gaps of the comb teeth at the corresponding suction port. Under the action of the suction fan, the wind pressure in the slit effect area increases, the wind speed increases, and the suction force increases. The liquid flow carries the dirt and / or entanglements to the slit effect area and is quickly sucked into the suction port.

[0065] In this embodiment, Fig.13 As shown, the rear tooth surface 617 is tilted downward along the connecting portion 62, and the angle between the rear tooth surface and the horizontal plane is θ, where θ is the angle of inclination of the rear tooth surface, 30°≤θ≤35°. Under the guiding effect of the inclination angle θ of the rear tooth surface, it is easier and more difficult for the dirty liquid and dirt to move smoothly to the vicinity of the suction port. This angle just matches the angle formed by the suction hose passing through the accommodating cavity from the suction port and connecting with the suction pipe on the dirt bucket from the rear part of the accommodating cavity upward, so the guiding effect is good, so that the dirty liquid and dirt can enter the suction port more smoothly and move along the suction port and the suction hose to the suction pipe and enter the dirt bucket, which not only improves the suction efficiency, but also improves the suction effect. In this embodiment, a=83°, θ=32°. In this embodiment, the tooth width b of the comb teeth is 1.5 mm, and the spacing L between the two comb teeth is 1 mm, which ensures that the gap between the through sections of the comb teeth covering the sewage suction port is reasonable, thereby ensuring the area of ​​the slit effect zone, ensuring that sufficient wind pressure can be generated here to enhance the suction force. The suction force generated is sufficient to be greater than the adhesion force of dirt, entangled objects or dirty liquid, and the clamping force of entangled objects or larger particles clamped in the spacing between the two comb teeth, thereby making it easier for dirt to pass through the gap between the comb teeth and enter the sewage suction port. The height of the comb teeth covering the suction port downward is h=1mm. The comb teeth formed by this scheme are relatively small, so no obvious tooth marks will be produced on the cleaning member, and the movement resistance of the roller brush is also relatively small. The comb teeth are long enough to extend into the bristles to handle entanglements, and the length covering the suction port is also relatively small. Therefore, there is little obstacle for the surface cleaning device to suck away larger dirt from the surface to be cleaned. Not only can it handle larger garbage on the surface to be cleaned, but also a certain slit effect can be formed at the suction port, and the cleaning and suction effect of a small part of dirt or dirty liquid or entanglements scraped off by the comb teeth and the scraping member is also better.

[0066] Of course, it is understandable that we can also use such a combing member, which includes a fixed part, a connecting part and comb teeth, the comb teeth only include a through section, no guide section is set, and of course no guide groove is set on the connecting part, the front end of the connecting part extends forward, and its top surface is in contact with the suspended section of the scraping member, the front end of the suspended section of the scraping member protrudes from the front end of the connecting part, the front combing surface of the connecting part forms the comb teeth and the drainage area of ​​the scraping member, and the tooth grooves of the comb teeth are horizontally arranged, the groove bottom surface of the tooth groove is a plane or a downward curved arc surface, the groove bottom surface of the tooth groove is not higher than the top surface of the suction port, and the groove bottom surface of the tooth groove of the comb teeth is flush with the upper top surface of the suction port, such as Fig.16 As shown; the combing member can also be used as Fig.15 The combing piece shown in the figure; as long as the comb teeth partially cover the sewage suction port, and the gap between the comb teeth can form a slit effect, it can play a good role in handling entangled objects such as hair, and can generate increased wind pressure to better suck the entangled objects, dirty liquids and dirt into the sewage suction port, thereby improving the sewage suction effect. Such technical solutions that do not deviate from the concept of the present invention are all within the protection scope of the present invention, and examples will not be given one by one here.

[0067] Of course, it can be understood that the surface cleaning device includes such a structure: the roller brush 4, the combing member 6 and the scraping member 5 are all arranged on the floor brush 2, and a detachable dirt box 7 is arranged in the housing of the floor brush 2, such as Fig.17 As shown, the upper end of the dirt box 7 has an opening 71, and the upper edge 72 of the opening 71 of the dirt box 7 extends upward and outward, and the upper edge 72 has a guide surface 73 inclined inward, so that the dirt, hair and other entanglements scraped off by the scraping member, combing member and roller brush all fall into the upper edge of the dirt box and enter the dirt box along the guide surface 73, so that the dirty liquid or dirt is scraped and collected in the dirt box, and no separate suction port is provided. The opening is the suction port, and the installation and matching structure of the combing member and the scraping member are consistent with the embodiment 1, which will not be repeated here; or, we can also set the comb teeth on the floor washing robot, which does not include a fuselage, includes a fuselage, and the housing of the floor brush is integrally arranged with the fuselage, and the suction fan is arranged in the fuselage, and the floor brush is arranged at the bottom of the housing, and the suction port and the scraping member and combing member are all arranged on the housing at the bottom of the fuselage, and are located above the roller brush; such technical solutions that do not deviate from the concept of the present invention are all within the protection scope of the present invention, and will not be given examples one by one here.

[0068] The other structures and beneficial effects of this embodiment are consistent with those of the first embodiment and will not be described in detail here.

[0069] It is easy for those skilled in the art to understand that the protection scope of the present application is not limited to the above preferred embodiments. Without departing from the technical principles of the present application, those skilled in the art can split and combine the technical solutions in the above preferred embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. A surface cleaning device with good decontamination effect, comprising a floor brush with a roller brush, wherein the floor brush is provided with a decontamination device abutting against the roller brush, wherein the decontamination device comprises a scraping member and a combing member located below the scraping member, wherein: The combing member is provided with a plurality of comb teeth and a connecting portion extending from the comb teeth to the lower surface of the scraping member, the connecting portion abuts against the lower surface of the scraping member, the comb teeth and the connecting portion form a front combing surface, the front combing surface abuts against the roller brush, the scraping member extends in the direction of the roller brush over the front combing surface, the liquid flow scraped by the scraping member forms a filling area between the connecting portion and the lower surface of the scraping member, the connecting portion is provided with a guide groove, the guide groove and the lower surface of the scraping member form a filling area, the comb teeth are at least partially arranged in the filling area, the liquid flow in the filling area gathers and is pressurized to flush the gaps between the comb teeth.

2. The surface cleaning device according to claim 1, characterized in that A guide groove is provided at the lower part of the connecting part, and the guide groove is connected to the gap between the comb teeth.

3. The surface cleaning device according to claim 2, characterized in that The front combing surface of the connecting part, the guide groove and the lower surface of the scraping member form a filling area.

4. The surface cleaning device according to claim 1, characterized in that The guide groove extends upward to the lower surface of the scraping member, and extends downward to the gap between the comb teeth.

5. The surface cleaning device according to claim 1, characterized in that The inner bottom surface of the guide groove is an arc surface or an inclined surface.

6. The surface cleaning device according to claim 1, characterized in that The surface cleaning device is also provided with a dirt suction fan. When the dirt suction fan is working, the airflow in the guide groove is sucked away, and the liquid flow in the guide groove is gathered and pressurized to flush the gap between the guide groove and the comb teeth.

7. The surface cleaning device according to claim 6, characterized in that The floor brush is provided with a sewage suction port arranged toward the roller brush, and the combing member extends downward and at least partially blocks the sewage suction port.

8. The surface cleaning device according to claim 7, characterized in that The comb teeth extend downward and at least partially cover the sewage suction port, so that the gaps between at least some of the comb teeth form a slit effect area.

9. The surface cleaning device according to claim 1, characterized in that The comb teeth extend into the bristles of the roller brush, and the front combing surface is tangent to part of the bristles of the roller brush; or, the comb teeth extend into the bristles of the roller brush, and the extension surface of the front combing surface is located at the periphery of the roller brush and is separated from the roller of the roller brush.

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