Carpet cleaning device

Abstract

The present invention discloses a cleaning device suitable for carpets, comprising a machine body and a cleaning mechanism; the cleaning mechanism includes a fresh water tank, a high-pressure water pump and a nozzle; the fresh water tank and the high-pressure water pump are installed inside the machine body, and the nozzle is installed at the bottom of the machine body; the fresh water tank, the high-pressure water pump and the nozzle are sequentially connected through a fresh water pipeline, and the high-pressure water pump increases the pressure to make the cleaning liquid in the fresh water tank spray out through the nozzle to form a water column spraying towards the carpet to clean the carpet. The present invention removes sundries and garbage in the gaps between carpet hairs and the areas covered by carpet hairs by means of flushing the carpet with a high-kinetic energy water column, and at the same time flushes the surface under the carpet hairs. After flushing, the garbage and sewage are recycled, and finally the garbage and sewage are stored separately. At the same time, the water vapor of the carpet after being cleaned is absorbed to accelerate the drying speed of the carpet. This cleaning device solves the problem that the existing floor sweeper cannot be used on the floor covered with carpets, filling the gap in the carpet cleaning device.

Description

Technical Field

[0001] The present invention belongs to the technical field of floor sweepers, and particularly relates to a cleaning device suitable for carpets. Background Art

[0002] Floor sweepers are suitable for cleaning indoor floors. They can not only remove dust, debris, hair and other garbage, but also clean and wipe the floor, completing the work of sweeping and mopping, thus reducing the household burden of users.

[0003] However, existing floor sweepers can only clean in a way of wiping with a rag on flat and smooth floors. If a floor sweeper is used on a floor covered with a carpet, it is difficult for the rag on the floor sweeper to clean the gaps between the fluff and the areas covered by the fluff. Therefore, existing floor sweepers are completely inapplicable to the cleaning work of floors covered with carpets.

[0004] In summary, there is an urgent need for a cleaning device suitable for carpets to fill the blank area where existing floor sweepers are difficult to clean carpets. Summary of the Invention

[0005] The purpose of the present invention is to provide a cleaning device suitable for carpets, which can effectively clean the gaps between the fluff on the carpet surface and the areas covered by the fluff by spraying water jets to wash the carpet.

[0006] The present invention is realized through the following technical solutions: A cleaning device suitable for carpets includes a body and a cleaning mechanism; the cleaning mechanism includes a water tank, a high-pressure water pump and a nozzle; the water tank and the high-pressure water pump are installed in the body, and the nozzle is installed at the bottom of the body; the water tank, the high-pressure water pump and the nozzle are sequentially connected through a water pipe, and the high-pressure water pump pressurizes to make the cleaning liquid in the water tank be sprayed out through the nozzle to form a water column spraying towards the carpet to clean the carpet; the nozzle is provided with a plurality of spray holes, and any one of the spray holes is connected to the water pipe to spray a water column; the plurality of spray holes are symmetrically arranged on both sides with the midline of the body in the horizontal plane as the symmetry axis.

[0007] Through the above solutions, the present invention obtains at least the following technical effects:

[0008] The body of the present invention has the same structure as the body of the existing floor sweeper, and both have functions such as automatically identifying the route and avoiding obstacles. Although the existing floor sweeper also has a device for spraying and watering, its main function is to evenly moisten the floor to cooperate with the wiping effect of the rag, while the cleaning device of the present invention mainly uses spraying high-kinetic-energy water jets to wash the carpet as the cleaning means. The cleaning device of the present invention pressurizes through a high-pressure water pump to enable the nozzle to spray high-kinetic-energy water jets to wash the carpet. When the high-kinetic-energy water jets wash on the carpet surface, they can effectively clean the gaps between the fluff and can also disperse the fluff to clean the areas covered by the fluff, effectively cleaning the carpet.

[0009] Preferably, the central axes of a plurality of the spray holes are arranged on both sides of the central line with the same incremental angle with respect to the central line, and the incremental angle is 2.6° - 3°.

[0010] Multiple spray holes are provided on the spray head of the present invention to improve the flushing efficiency. Since the diameter of the high-kinetic-energy water column ejected from the spray holes is small, the flushing area is relatively small. To avoid omissions, in the present invention, each spray hole is inclined towards the center, reducing the distance between the sites where adjacent water columns flush on the carpet surface, so as to ensure that the flushing areas of each water column are connected and avoid the appearance of unflushed areas.

[0011] Preferably, a plurality of spray holes are opened on the same surface of the spray head and aligned along a horizontal straight line perpendicular to the central line; the installation angle between the central axis of any spray hole and the ground is 35° - 45°.

[0012] In the present invention, the high-kinetic-energy water column ejected from the spray holes flushes on the carpet surface in an inclined posture, which can not only effectively expand the flushing range, but also has a guiding effect on the fluff on the carpet surface to reduce the resistance generated by the carpet fluff to the movement of the machine body. More importantly, when the high-kinetic-energy water column flushes the fluff on the carpet in an inclined posture, it can promote the garbage wrapped around the fluff or sandwiched in the fluff gaps to be separated more easily, improving the cleaning effect.

[0013] Preferably, it further includes a recovery mechanism; the recovery mechanism includes a garbage collection box, a sewage tank and a blower; the garbage collection box is installed at the bottom of the machine body, the sewage tank is detachably installed in the machine body, the blower is installed in the machine body and connected to the sewage tank to provide negative pressure suction for the sewage tank, and the garbage collection box is communicated with the sewage tank through a sewage pipe, so that the sewage in the garbage collection box enters the sewage tank through the sewage pipe under the action of negative pressure suction.

[0014] Preferably, the recovery mechanism further includes a filter screen, and the filter screen is arranged at the connection between the sewage pipe and the sewage tank.

[0015] Preferably, a blower chamber sealing plate is provided at the connection between the blower and the sewage tank, and a air duct is reserved between the blower chamber sealing plate and the inner surface of the top of the sewage tank, and the blower chamber sealing plate is used to control the on-off of the air duct.

[0016] Preferably, the recovery mechanism further includes a floating scraper; the floating scraper is provided with a collection port, and the collection port is communicated with the garbage collection box, and the floating scraper is installed at the bottom of the machine body through a horizontally arranged rotating shaft, so that the floating scraper floats with the change of the fluff thickness on the carpet surface.

[0017] Preferably, an elastic sealing strip is provided on the contact surface between the floating squeegee and the carpet; the elastic sealing strip surrounds the collection port.

[0018] Preferably, a comb is also provided on the contact surface between the floating squeegee and the carpet, and the comb is used to comb the fluff on the surface of the carpet and remove garbage.

[0019] Preferably, a first water level detector is provided in the clean water tank, and the first water level detector triggers a signal when the water level in the clean water tank reaches the lower limit; a second water level detector is provided in the sewage tank, and the second water level detector triggers a signal when the water level in the sewage tank reaches the upper limit; the two detectors trigger signals and transmit them to the control terminal of the machine body to stop running.

[0020] The beneficial effects of the present invention are as follows:

[0021] The present invention removes sundries and garbage in the gaps between the carpet fluff and the area covered by the fluff, and at the same time flushes the surface under the carpet fluff by means of high-kinetic energy water jets flushing the carpet. The high-pressure water pump provides a pressurizing effect, so that the cleaning liquid stored in the clean water tank rushes out from the nozzle in a high-kinetic energy state, forming a high-kinetic energy water jet towards the carpet to flush the carpet. Increasing the number of spray holes can increase the cleaning area of the carpet per unit time, making the cleaning effect more meticulous, uniform and comprehensive, and thus achieving the purpose of improving the cleaning efficiency. This cleaning device solves the problem that existing floor sweepers cannot clean on floors covered with carpets, filling the gap in carpet cleaning devices. Description of the Drawings

[0022] Figure 1 It is a top view of the cleaning device provided in an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the positional relationship between the bottom spray holes and the collection port of the cleaning device provided in an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the arrangement mode of the spray holes on the nozzle provided in an embodiment of the present invention.

[0025] Figure 4 It is a cross-section of the cleaning device provided in an embodiment of the present invention, and a schematic diagram of the angle between the spray holes and the ground.

[0026] Figure 5 It is a schematic diagram of the cleaning mechanism and the recycling mechanism provided in an embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of the floating squeegee structure provided in an embodiment of the present invention.

[0028] Legend:

[0029] 1 Body; 2 Cleaning mechanism; 3 Recycling mechanism;

[0030] 21 Fresh water tank; 22 High-pressure water pump; 23 Nozzle; 24 Fresh water pipeline;

[0031] 31 Garbage collection box; 32 Sewage tank; 33 Fan; 34 Sewage pipeline; 35 Filter screen; 36 Fan chamber sealing plate; 37 Floating scraper;

[0032] 231 Spray holes;

[0033] 371 Collection port; 372 Rotating shaft; 373 Elastic sealing strip; 374 Comb teeth. Detailed implementation mode

[0034] It should be understood that the embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, a direct connection, or an indirect connection through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The present invention will be further described below with reference to the drawings and embodiments.

[0038] This embodiment provides a cleaning device suitable for carpets, including a body 1 and a cleaning mechanism 2;

[0039] like Figure 2 As shown, the housing 1 is a disc-shaped structure, with universal wheels for steering and a pair of driving wheels installed at the bottom. The three wheels are in a three-point support state at the bottom of the body 1 to maintain the stability of the body 1. The body 1 has a built-in control terminal, a driving mechanism, and various obstacle avoidance and path finding sensors, so that the body 1 can autonomously avoid obstacles and find its way. The disc-shaped housing structure of the body 1 with universal wheels can flexibly shuttle in complex environments.

[0040] like Figure 1 and Figure 5 As shown, the cleaning mechanism 2 includes a clean water tank 21, a high-pressure water pump 22 and a nozzle 23. The clean water tank 21 and the high-pressure water pump 22 are installed inside the machine body 1, and the nozzle 23 is located at the bottom of the machine body 1. The clean water tank 21, the high-pressure water pump 22 and the nozzle 23 are connected in sequence through the clean water pipe 24 to form a water supply channel. The high-pressure water pump 22 provides a pressurization effect, so that the cleaning liquid stored in the clean water tank 21 rushes out from the nozzle 23 in a high kinetic energy state, forming a high kinetic energy water column sprayed toward the carpet. The water column impacts the surface of the carpet to remove garbage and debris mixed in the gaps between the carpet fluff, and at the same time, the water column can also disperse the carpet fluff and clean the area covered by the fluff. Among them, the cleaning liquid may include water or a liquid with cleaning and decontamination capabilities, and the user can choose different cleaning liquids according to the degree of contamination of the carpet to be cleaned.

[0041] like Figure 3 As shown, in order to improve the cleaning efficiency, in one embodiment, a plurality of spray holes 231 are provided on the spray head 23, and each spray hole 231 is connected to the clean water pipe 24 connected to the spray head 23, that is, each spray hole 231 is a branch water channel, and the high-pressure water pump 22 increases the pressure so that each spray hole 231 can spray a high-kinetic energy water column to wash the carpet. Increasing the number of spray holes 231 can increase the cleaning area of the carpet per unit time, making the cleaning effect more detailed, uniform and comprehensive, thereby achieving the purpose of improving the cleaning efficiency.

[0042] like Figure 3 As shown, further, since the area of the carpet washed by the high kinetic energy water column sprayed by each spray hole 231 is limited, in order to avoid the occurrence of a missed washing area due to the large distance between two adjacent washing areas, in this embodiment, each spray hole 231 is tilted toward the center line of the machine body 1 in the horizontal plane. Because the direction of the high kinetic energy water column sprayed by the spray hole 231 is the same as the direction of the central axis of the spray hole 231, the water column sprayed by each spray hole 231 is concentrated toward the center in a convergent shape, so that the edges of the washing area formed by the two adjacent water columns overlap, thereby avoiding the occurrence of a missed washing area.

[0043] like Figure 3As shown, further, in order to make the high-kinetic energy water jets evenly spaced in the washing area of the carpet surface, when setting the position and inclination angle of the spray holes 231, the plurality of spray holes 231 are symmetrically arranged on both sides of the center line of the machine body 1 in the horizontal plane as the symmetrical axis, and each spray hole 231 takes the center line of the machine body 1 in the horizontal plane as the reference line, and the angle between the center axis of each spray hole 231 and the center line is the inclination angle of the spray hole 231. In the order from near to far from the center line, in each adjacent two spray holes 231, the inclination angle of the latter spray hole 231 is 2.6-3° greater than the inclination angle of the previous spray hole 231, that is, the incremental angle of each spray hole 231 is 2.6-3°. And the incremental angles of each spray hole 231 are the same to ensure that the intervals of the high-kinetic energy water jets in the washing area of the carpet surface are equal, wherein the front side and the rear side of the center line are the forward direction and the backward direction of the sweeper, respectively, and the driving wheels of the sweeper are symmetrically located on both sides of the center line. Furthermore, in this embodiment, the center line is a construction line located in the middle of the nozzle 23 and perpendicular to the nozzle 23 .

[0044] like Figure 4 As shown, in one embodiment, the nozzle 23 as a carrier of a plurality of spray holes 231 is arranged in a slat structure, and all the spray holes 231 are concentrated on the same surface of the slat structure, and the spray holes 231 are aligned along a horizontal straight line perpendicular to the center line. This ensures that the high kinetic energy water columns sprayed by the spray holes 231 are adjacent, and the cleaning areas formed on the carpet are also neatly arranged. It is worth mentioning that in order to improve the cleaning effect of the high kinetic energy water column on the carpet, the central axis of all the spray holes 231 is set at an installation angle of 35-45° to the ground, so that each high kinetic energy water column flushes the carpet from the oblique side, and the area formed by each high kinetic energy water column flushing on the carpet surface is elliptical, which is larger than the area of the center area formed by the high kinetic energy water column vertically flushing the carpet surface. In addition, all the spray holes 231 have the same angle with the ground, which will flush the fluff on the carpet to the same side, and turn and guide the carpet fluff. It can not only clean the surface of the carpet covered with fluff, but also flush the garbage entangled or mixed in the gaps between the fluff away from the area where it is located to achieve the effect of removing garbage, and it can also straighten the fluff to reduce friction.

[0045] It is worth mentioning that in the present embodiment, the direction of each spray hole 231 is opposite to the movement direction of the machine body 1, that is, the high kinetic energy water column flushes toward the rear of the machine body 1, so that the garbage and sewage remaining after flushing accumulate at the rear of the machine body 1, so that the corresponding mechanism arranged at the rear of the machine body 1 can recycle and process the garbage and sewage.

[0046] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, in one embodiment, in order to recycle the garbage and sewage washed out by the high-kinetic-energy water column, the cleaning device of the present invention further includes a recycling mechanism 3. The recycling mechanism 3 includes a garbage collection box 31, a sewage box 32, and a blower 33. The garbage collection box 31 is installed at the bottom of the machine body 1. The garbage collection box 31 is adjacent to the nozzle 23 and is located behind the nozzle 23, and timely collects the garbage washed out by the high-kinetic-energy water column and the sewage remaining on the carpet surface as the machine body 1 advances. The sewage box 32 and the blower 33 are both arranged inside the machine body 1. The blower 33 is connected to the sewage box 32 to extract the air in the sewage box 32, so that the air pressure inside the sewage box 32 is lower than the external air pressure and is in a negative pressure state. The garbage collection box 31 and the sewage box 32 are connected through a sewage pipe 34, so that the negative pressure in the sewage box 32 acts on the garbage collection box 31, and the sewage in the garbage collection box 31 is sucked into the sewage box 32 through the sewage pipe 34.

[0047] The garbage collection box 31 includes a box body and a box cover. When the cleaning device is idle, the box cover can be opened to clean the sediment in the garbage collection box 31 for the next use. Among them, the inlet end of the garbage collection box 31 is adapted to the width of the floating scraper 37, so that the scraped water and garbage can effectively enter the garbage collection box 31, and a curvature can be provided at the bottom of the garbage collection box 31, so that the heavier water and garbage can sink to the bottom of the garbage collection box 31.

[0048] As Figure 1 、 Figure 4 and Figure 5 As shown in

[0049] Based on the above embodiment, in order to prevent solid garbage from being sucked into the sewage box 32 and increasing the cleaning difficulty, in one embodiment, a filter screen 35 is installed at the connection between the sewage pipe 34 and the sewage box 32. The solid garbage is filtered by the filter screen 35 and blocked on one side of the garbage collection box 31, so as to realize the separate collection of solid garbage and liquid sewage. When disassembling and cleaning the cleaning device, only the sewage in the sewage box 32 and the solid garbage in the garbage collection box 31 need to be cleaned respectively.

[0050] The sewage box 32 is installed in the machine body 1 in a detachable connection manner. The sewage box 32 can be taken out as a whole to pour out the sewage, or the rubber plug provided on the sewage box 32 can be opened, and the sewage in the sewage box 32 can be discharged through the connecting pipe.

[0051] As Figure 5As shown, in one embodiment, to prevent the fan 33 from sucking sewage into its interior during the process of extracting air from the sewage tank 32, a fan chamber sealing plate 36 is provided at the connection between the fan 33 and the sewage tank 32 to partition the installation space of the fan 33 to form a fan chamber. The sealing plate is configured as a foldable or liftable structure to control the communication or partition of the air duct between the fan 33 and the sewage tank 32. In this embodiment, the fan chamber sealing plate 36 is a foldable structure, and an electric switch is provided on one side of the installation position of the fan 33. The control terminal in the machine body 1 commands the electric switch to push open the fan chamber sealing plate 36 to connect the fan 33 and the sewage tank 32, or commands the electric switch to retract through the control terminal in the machine body 1 to partition the fan 33 and the sewage tank 32, protecting the fan 33 from being infiltrated by sewage.

[0052] Since the working principle of the fan 33 is to extract the air in the sewage tank 32 and deliver it to the outside, an air hole is provided at the position of the machine body 1 corresponding to the fan chamber to facilitate the fan to send out the gas.

[0053] As Figure 2 、 Figure 5 and Figure 6 shown, due to the different thicknesses of the surface fluff of the carpet, in order to improve the recovery efficiency of garbage and sewage and avoid residual garbage and sewage on the washed carpet, in one embodiment, the recovery mechanism 3 further includes a floating scraper 37. The floating scraper 37 is provided with a collection port 371 communicating with the garbage collection box 31. The floating scraper 37 covers the surface of the carpet and the fluff layer. Through the negative pressure in the sewage tank 32, a suction force is formed at the collection port 371 to suck the garbage and sewage in the carpet surface layer and the fluff layer into the garbage collection box 31 through the collection port 371. In order for the floating scraper 37 to adapt to the height change of the carpet surface, one side of the floating scraper 37 is pivotally connected to the bottom of the machine body 1 through a rotating shaft 372, realizing the effect that the floating scraper 37 can flip around the pivot side. During the movement of the machine body 1, the floating scraper 37 flips and undulates with the change of the carpet thickness, always maintaining the state of the collection port 371 being in contact with the carpet, making the negative pressure suction force generated at the collection port 371 stronger, capable of efficiently absorbing garbage and sewage. It can also absorb the water vapor on the carpet after being washed, accelerating the drying speed of the carpet.

[0054] The connection between the floating scraper 37 and the garbage collection box 31 is connected with a soft rubber material, and the soft rubber material can be soft rubber or silicone material. The soft rubber material can not only ensure the connection state between the floating scraper 37 and the garbage collection box 31, preventing the garbage or sewage sucked into the garbage collection box 31 from leaking out, but also ensure the free undulating movement of the floating scraper 37 through its own elastic stretching effect, enabling the floating scraper 37 to better fit the carpet surface.

[0055] As Figure 6As shown in the figure, based on the above embodiments, in order to further improve the efficiency of the cleaning device in absorbing garbage and sewage, an elastic sealing strip 373 is provided on the contact surface between the floating squeegee 37 and the carpet. The elastic sealing strip 373 is installed around the collection port 371. When the floating squeegee 37 fits the carpet, the elastic sealing strip 373 can seal the gap between the floating squeegee 37 and the carpet, reduce the number of air leakage points, and further enhance the negative pressure suction at the collection port 371. It is worth mentioning that the elastic sealing strip 373 in this embodiment is made of high-elasticity materials such as silica gel and soft rubber, and deforms with the change of the gap between the floating squeegee 37 and the carpet, reducing the gap between the floating squeegee 37 and the carpet to improve the sealing effect.

[0056] As Figure 2 , Figure 5 and Figure 6 shown in the figure, based on the above embodiments, a comb 374 is also provided on the contact surface between the floating squeegee 37 and the carpet. In this embodiment, the comb 374 is composed of a plurality of tooth blocks arranged neatly, and each tooth block has a length and width of 2 mm. During the process of the floating squeegee 37 moving forward with the machine body 1 and rubbing on the carpet surface, the comb 374 plays a role in combing the carpet fluff, removing the residual garbage and hair entangled or mixed in the fluff, and directly entering the garbage collection box 31 under the action of the negative pressure suction at the collection port 371.

[0057] It is worth mentioning that since the nozzle 23 in the foregoing embodiment sprays a high-kinetic energy water column towards the rear of the machine body 1, guiding the carpet fluff to the rear of the machine body 1, when the floating squeegee 37 passes through the washed carpet fluff, the comb 374 will comb the fluff from the reverse direction again. The two guiding effects on the fluff can better clean the garbage entangled on the fluff, mixed between the fluff or covered under the fluff, improving the cleaning effect of the cleaning device on the carpet.

[0058] In one embodiment, in order to keep the cleaning device in an effective cleaning state, a first water level detector needs to be installed in the clean water tank 21 to monitor the stored water volume in the clean water tank 21. When the water level in the clean water tank 21 reaches the lower limit, the first water level detector sends a signal to the control terminal, and the control terminal instructs the machine body 1 to stop running, indicating that there is no clean water in the cleaning device to wash the carpet at present, and the cleaning work needs to be stopped for manual water replenishment, or the control terminal instructs the driving mechanism and various obstacle avoidance and path finding sensors to move to the preset water replenishment area for automatic water replenishment.

[0059] Based on the above embodiments, to avoid the problem that the water storage volume in the sewage tank 32 is too high and overflows the fan chamber sealing plate 36, causing problems such as water ingress into the fan 33. In this embodiment, a second water level detector is provided in the sewage tank 32. When the water level in the sewage tank 32 reaches the upper limit of overflowing the fan chamber sealing plate 36, the second water level detector sends a signal to the control terminal, and the control terminal instructs the machine body 1 to stop running, indicating that there is no space in the current sewage tank 32 to collect more sewage, and it is necessary to stop the cleaning work and clean the sewage tank 32.

[0060] The various technical features in the above embodiments can be combined arbitrarily as long as there is no conflict or contradiction between the features. However, due to space limitations, they are not described one by one.

[0061] The present invention is not limited to the above embodiments. If various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, and if these modifications and variations are within the scope of the claims of the present invention and equivalent technical scope, then the present invention also intends to include these modifications and changes.

Claims

1. A cleaning device suitable for carpets, characterized in that, It includes a body and a cleaning mechanism; the cleaning mechanism includes a fresh water tank, a high-pressure water pump and a nozzle; the fresh water tank and the high-pressure water pump are installed in the body, and the nozzle is installed at the bottom of the body; the fresh water tank, the high-pressure water pump and the nozzle are sequentially connected through a fresh water pipe, and the high-pressure water pump pressurizes to make the cleaning liquid in the fresh water tank spray out through the nozzle to form a water column jetting towards the carpet to clean the carpet; the nozzle is provided with a number of spray holes, and any of the spray holes is connected to the fresh water pipe to spray a water column; a number of spray holes are symmetrically arranged on both sides with the midline of the body in the horizontal plane as the symmetry axis; in the order from near to the midline to far, the central axes of a number of the spray holes are arranged on both sides of the midline with the midline as the reference and with the same incremental angle, and the incremental angle is 2.6°-3°, so as to ensure that the intervals of the high-kinetic-energy water columns in the flushing area on the carpet surface are equal; wherein, the front side and the rear side of the midline are the forward direction and the backward direction of the body respectively, and the driving wheels of the body are symmetrically located on both sides of the midline, the midline is the middle position of the nozzle and the structural line perpendicular to the nozzle, and the water columns sprayed by each spray hole are converged towards the center, so that the edges of the flushing areas formed by adjacent two water columns overlap; It further includes a recovery mechanism; the recovery mechanism includes a garbage collection box, a sewage tank and a blower; the garbage collection box is installed at the bottom of the body, the sewage tank is detachably installed in the body, the blower is installed in the body and connected to the sewage tank to provide negative pressure suction for the sewage tank, the garbage collection box is connected to the sewage tank through a sewage pipe, so that the sewage in the garbage collection box enters the sewage tank through the sewage pipe under the action of negative pressure suction, and a radian is provided at the bottom of the garbage collection box, so that heavier water garbage sinks to the bottom of the garbage collection box; The nozzle has a slat structure, and a number of spray holes are opened on the same surface of the nozzle and aligned along a horizontal straight line perpendicular to the midline; the installation angle between the central axis of any of the spray holes and the ground is 35°-45°; The recovery mechanism further includes a floating scraper; the floating scraper is provided with a collection port, and the collection port is connected to the garbage collection box, the floating scraper is installed at the bottom of the body through a horizontally arranged rotating shaft, so that the floating scraper floats with the change of the fluff thickness on the carpet surface, wherein, the connection part between the floating scraper and the garbage collection box is connected with a soft rubber material, and the soft rubber material is a soft rubber or silica gel material; The contact surface between the floating scraper and the carpet is further provided with comb teeth, the comb teeth are used for combing the fluff on the carpet surface and removing garbage, the high-kinetic-energy water columns sprayed by the spray holes flush the carpet from the obliquely side, the area formed by each high-kinetic-energy water column flushing on the carpet surface is an ellipse, and at the same time, the orientation of each spray hole is opposite to the moving direction of the body, and the high-kinetic-energy water columns flush towards the rear of the body, so that the remaining garbage and sewage after flushing accumulate behind the body, and when the floating scraper passes through the carpet fluff that has been flushed, the comb teeth will comb from the reverse direction of the fluff again; The recycling mechanism further includes a filter screen, which is arranged at the connection between the sewage pipe and the sewage tank. A sensor is arranged at the filter screen to monitor the number of newly added garbage at the filter screen per unit time. When the number of newly added garbage at the filter screen per unit time is less than a predetermined value, a signal is triggered, indicating that the cleanliness of this area is relatively high. After receiving the signal, the control terminal instructs the relevant driving mechanism and various obstacle avoidance and path finding sensors to operate the body to go to other areas for cleaning work.

2. The carpet cleaning device according to claim 1, wherein: A blower chamber sealing plate is arranged at the connection between the blower and the sewage tank. There is a reserved air duct between the blower chamber sealing plate and the inner surface of the top of the sewage tank. The blower chamber sealing plate is used to control the on-off of this air duct.

3. The carpet cleaning device according to claim 2, characterized in that: An elastic sealing strip is arranged on the contact surface between the floating scraper and the carpet; the elastic sealing strip surrounds the collection port.

4. The carpet cleaning device according to claim 1, characterized in that: A first water level detector is arranged in the clean water tank, and the first water level detector triggers a signal when the water level in the clean water tank reaches the lower limit; a second water level detector is arranged in the sewage tank, and the second water level detector triggers a signal when the water level in the sewage tank reaches the upper limit; the two detectors trigger signals and transmit them to the control terminal of the body to stop running.

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