Cleaning head and cleaning tool

Abstract

The invention relates to a cleaning head and a cleaning tool. The cleaning head comprises a shell and a cleaning module installed at the bottom of the shell and in the shell. The cleaning module comprises a mopping and sweeping unit, an extruding unit, a dry garbage collecting unit, a cleaning unit and a sewage collecting unit; the mopping and sweeping unit comprises a roller and a shovel strip, and the cleaning unit scrapes garbage adhered to the surface of the roller to fall into the dry garbage collecting unit; the roller comprises ebonite and a sponge layer wrapping the ebonite, and the roller scrubs the ground at the grounding point; the extrusion unit extrudes the surface of the roller at the extrusion point to form a water extrusion area, and sewage extruded after the roller is washed flows away along the water extrusion area and is collected by the sewage collection unit; the water content of the sponge layer of the roller passing through the extrusion point is unsaturated along with rotation of the roller, and water can be continuously absorbed when the roller rotates again to the grounding point to contact with the ground; the cleaning head can be used for cleaning sticky garbage and separating dry and wet garbage; the cleaning tool further comprises a water circulation module, and sewage can wash the roller again after being filtered.

Description

[0001] This application is a divisional application of Chinese patent application No. 202010075495.X and invention name “Drum and cleaning tool with the same”, the contents of which are incorporated herein by reference. Technical Field

[0002] The invention relates to a cleaning device, in particular to a cleaning head and a cleaning tool for cleaning dry garbage, wet garbage and mixed garbage including sticky garbage on a flat ground. Background Art

[0003] Usually people clean the floor with tools such as brooms, mops, floor wipes, etc. These tools mainly rely on people's manual operation to complete the cleaning work. With the advancement of technology, people's requirements for floor cleaning tools are gradually increasing.

[0004] The first to appear was the vacuum cleaner, whose working principle is "air-dust circulation", that is, it relies on electricity to generate negative pressure to absorb garbage, dust, etc. on the ground. However, due to the limitations of its working principle, the vacuum cleaner cannot clean some garbage and stains that are firmly attached to the ground. Once liquid enters the vacuum cleaner, it is easy to cause damage to the vacuum cleaner. Therefore, a new floor cleaner has now appeared. The new floor cleaner drives the cleaning cylinder (cleaning roller) to wipe the ground through the operation of the motor. The cleaning cylinder usually uses a sponge cylinder or a scouring pad. At the same time, the floor cleaner will also be equipped with a water supply system and a sink to clean the cleaning cylinder, thereby perfectly cleaning the ground. The cleaned sponge cylinder usually uses a water squeezing piece to remove the water inside, otherwise the water will flow to the ground when the sponge cylinder is squeezed against the ground.

[0005] Generally speaking, the cleaning ability of a floor cleaner is related to the thickness of the sponge tube. The thicker the sponge tube, the stronger its cleaning ability. However, through actual operation, it is found that if the ordinary sponge tube is set too thick, the squeezing part cannot squeeze out the sewage inside it, causing pollution inside the sponge tube. If it is set too thin, it will wear quickly and have a short life. In addition, the water absorption capacity is insufficient and the ability to clean the stains on the bottom surface is insufficient. Therefore, it is difficult to determine the appropriate thickness of the sponge layer.

[0006] For this reason, some people have proposed a roller design with a double sponge layer. The inner layer uses a non-absorbent sponge, and the outer layer uses an absorbent sponge. However, the double sponge layer is easy to delaminate during use, and the service life is short.

[0007] During the squeezing process by the squeezing member, the squeezed water is not easy to control and can easily overflow from the cleaning head.

[0008] The contents of the background technology section are merely the technologies known to the public and do not necessarily represent the existing technologies in the field. Summary of the invention

[0009] In view of at least one of the defects in the prior art, in a first aspect, the present disclosure provides a cleaning head, comprising:

[0010] case;

[0011] The cleaning module is installed at the bottom of the shell and inside the shell, brings the garbage from the ground and separates it inside the shell, and includes a sweeping unit arranged at the bottom of the shell, a squeezing unit arranged in parallel with the sweeping unit, a dry garbage collection unit arranged behind the sweeping unit, a cleaning unit arranged at the entrance of the dry garbage collection unit, and a sewage collection unit; the sweeping unit includes a roller and a shovel bar, and the cleaning unit scrapes the garbage adhering to the surface of the roller and drops it into the dry garbage collection unit; the roller includes a hard rubber and a sponge layer wrapped outside the hard rubber, and the roller scrubs the ground at the grounding point; the squeezing unit squeezes the surface of the roller at the squeezing point to form a squeezing area, and the sewage squeezed out after flushing the roller flows along the squeezing area and is collected by the sewage collection unit; as the roller rotates, the sponge layer of the roller passing through the squeezing point is not saturated with water, and can continue to absorb water when it rotates to the grounding point and contacts the ground again;

[0012] The cleaning head can clean sticky garbage and can separate dry and wet garbage.

[0013] According to one aspect of the present disclosure, the drum comprises:

[0014] Hard rubber, with a pressing and retracting device fixed at one end to achieve snap connection / separation with the cleaning head housing;

[0015] The sponge layer is wrapped and fixed on the circumferential surface of the hard rubber, and the surface of the sponge layer includes thread protrusions to guide the sewage away along the direction of the thread protrusions.

[0016] According to one aspect of the present disclosure, the cleaning head further comprises:

[0017] The drive motor has a power output end. One end of the drive motor is fixed to the shell through a fixing seat and a rotating shaft. The other end of the drive motor can rotate around the rotating shaft at a certain angle. The other end of the hard rubber is hollow and is sleeved on the power output end of the drive motor.

[0018] According to one aspect of the present disclosure, the driving motor is connected to the hard rubber through a connecting piece to drive the hard rubber to rotate.

[0019] According to one aspect of the present disclosure, the push-to-telescopic device includes a button, a spring and a block. When the button is subjected to force, the spring is compressed to drive the block to move away from the position that resists the hard rubber shaft, so that the end of the hard rubber shaft can be moved out of the roller mounting groove on the cleaning head shell.

[0020] According to one aspect of the present disclosure, the threaded protrusion is a line extending from one end of the drum to the other end.

[0021] According to one aspect of the present disclosure, there are two threaded protrusions with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller respectively.

[0022] According to one aspect of the present disclosure, there are two threaded protrusions, which start from the same generatrix at both ends of the roller and extend toward the middle of the roller in opposite spiral directions.

[0023] According to one aspect of the present disclosure, a linear protrusion parallel to the axial direction is provided in the middle position of the drum, and the linear protrusion is connected to the two threaded protrusions.

[0024] According to one aspect of the present disclosure, the roller has a diameter of 15 mm to 700 mm.

[0025] According to one aspect of the present disclosure, the sponge layer has a thickness of 3-15 mm.

[0026] According to one aspect of the present disclosure, the sponge layer is made by foaming polyvinyl alcohol.

[0027] According to one aspect of the present disclosure, the sponge layer has a density of 0.25-0.5 g / cm3, a water absorption rate of 0.5-1.5 g / cm3, a Shore A hardness of 40-70, and a water storage rate of 0.2-1.0 g / cm3.

[0028] According to one aspect of the present disclosure, a secondary water tank for receiving sewage overflow is provided at the roller and the squeezing unit, and a sewage inlet of the secondary water tank faces the water squeezing area.

[0029] According to one aspect of the present disclosure, a protrusion is provided at one end of the sponge layer, and as the drum rotates, the protrusion sweeps the sewage inlet.

[0030] In a second aspect, the present disclosure further provides a cleaning tool, comprising:

[0031] The cleaning head as described in the first aspect;

[0032] The handheld part comprises a cleaning rod and an extension rod. The cleaning rod and the extension rod are connected via a connecting structure, and the cleaning rod is connected to the cleaning head via a hinge structure.

[0033] According to one aspect of the present disclosure, the cleaning tool also includes a driving motor, which includes a fixed end and a power output end, and the fixed end is fixed to the cleaning head shell through a rotating shaft; one end of the hard rubber includes a connecting shaft, and the other end is provided with a hollow blind hole, and a snap-fit ​​structure is provided in the blind hole. The hollow blind hole accommodates the driving motor, and the hard rubber shaft is connected to the power output end through the snap-fit ​​structure so that the driving motor can drive the drum to rotate.

[0034] According to one aspect of the present disclosure, the cleaning tool further comprises:

[0035] The water circulation module includes the sewage collection unit and the clean water supply unit connected by pipelines. The sewage squeezed out from the drum surface flows through the sewage area and is collected in the sewage collection unit. After purification, it enters the clean water supply unit and is sprayed to the water squeezing area again.

[0036] The cleaning head disclosed in the present invention is applied to a cleaning tool. The cleaning head adopts the "water-dust circulation" cleaning technology, and can clean the sticky wet garbage which is the most difficult to clean with the existing cleaning tools, and separate it from the dry garbage.

[0037] When the cleaning tool disclosed in the present invention is used to clean the floor, the wet outer sponge contacts the floor, which will not cause dust on the floor to be raised, and has the effect of an ordinary mop, thereby preventing secondary pollution; the outer sponge and the shovel bar cooperate with each other to completely collect solid garbage; the cleaning unit separates and collects the solid garbage attached to the outer sponge, and keeps the surface of the outer sponge free of solid garbage; the drum absorbs wet garbage on the floor, and when the water inside is squeezed out, the sticky garbage attached to the surface of the drum is peeled off and diluted, and the water-soluble part is taken into the sewage tank, and the water-insoluble part is peeled off from the drum and enters the solid garbage tank, thereby being able to process sticky garbage and separate dry and wet garbage; the squeezing unit squeezes out the liquid locked in the outer sponge, and keeps the outer sponge in an unsaturated state, thereby enabling the cleaning tool to continuously clean liquid garbage; the clean water supply unit and the squeezing unit work together to keep the roller in contact with the floor always in a clean state. Therefore, the present invention can clean sticky garbage, especially a mixture of various garbage, and can separate dry and wet garbage, and continuously keep the surface of the outer sponge of the drum clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0039] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the cleaning tool disclosed in the present invention;

[0040] Figure 2 for Figure 1 Exploded view of the cleaning head;

[0041] Figure 3 for Figure 1 Schematic diagram of the internal structure of the cleaning head;

[0042] Figure 4 for Figure 1 Schematic diagram of the cleaning head cross section;

[0043] Figure 5 for Figure 1 Schematic diagram of the bottom surface of the cleaning head;

[0044] Figure 6 for Figure 1 Schematic diagram of the cleaning head from the side;

[0045] Figure 7 A schematic diagram for forming the water squeezing zone;

[0046] Figure 8 This is a schematic diagram of the drum structure of an embodiment of the present disclosure;

[0047] Fig. 9 is a cross-sectional view of a cleaning tool with the above-mentioned roller;

[0048] Fig.10 for Fig. 9 Schematic diagram of the side appearance;

[0049] Fig.11 A perspective schematic diagram of an embodiment of a roller;

[0050] Fig.12 This is a schematic diagram of the drum being disassembled;

[0051] Fig.13 for Fig.12 Schematic diagram from another perspective;

[0052] Fig.14 Schematic diagram of another embodiment of the roller.

[0053] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] In the present invention, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which 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, and therefore cannot be understood as limiting 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0056] 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, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] The disclosure of the present invention provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described in the present invention. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0059] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0060] The present invention relates to a roller and a cleaning tool with the roller, the cleaning tool is used for cleaning the floor, especially a smooth and flat small-area floor, such as a home and kitchen floor. The cleaning tool is particularly suitable for cleaning mixed garbage containing dry garbage, wet garbage and sticky materials such as noodles, porridge, ketchup and the like.

[0061] The dry garbage mentioned in the present disclosure specifically refers to granular garbage, such as fruit peels, melon seed shells, rice grains, paper scraps, etc.

[0062] Wet garbage refers to liquid garbage, such as water, beverages, etc.

[0063] Sticky garbage includes soups, stews, porridge and other garbage with a certain degree of viscosity.

[0064] Other garbage such as dust, ground marks, etc. are also cleaning objects disclosed in the present invention.

[0065] Figure 1 is a three-dimensional schematic diagram of an embodiment of the cleaning tool disclosed herein, Figure 2 This is an exploded view of the cleaning head; Figure 3 This is a schematic diagram of the internal structure of the cleaning head; Figure 4 is a cross-sectional schematic diagram, Figure 5 This is a schematic diagram of the bottom surface of the cleaning head. Figure 6 This is a schematic diagram of the cleaning head from the side. Figures 1 to 6 As shown, the cleaning tool of the present disclosure includes a cleaning head and a handheld part connected to each other. The handheld part includes a cleaning rod 301 and an extension rod 302, and the cleaning rod 301 and the extension rod 302 are connected by a connecting structure 304. The cleaning rod 301 is connected to the cleaning head by a hinge structure 305. The operator drives the cleaning head to move on the ground surface through the handheld part to clean up various garbage scattered on the ground surface.

[0066] The cleaning head of the cleaning tool disclosed herein comprises a housing 500, a cleaning module is installed at the bottom of the housing and inside the housing, and the cleaning module separates the garbage from the ground and separates it inside the housing. Wheels 190 are installed on the bottom surface of the housing to reduce the contact between the non-cleaning module and the ground, making dragging more labor-saving.

[0067] The cleaning module includes a sweeping unit 110 arranged at the bottom of the shell, a squeezing unit 120 arranged in parallel with the sweeping unit, a dry garbage collecting unit 150 arranged behind the sweeping unit for storing dry garbage, a cleaning unit 130 arranged at the entrance of the dry garbage collecting unit 150, a sewage collecting unit 140 and a clean water supply unit 160.

[0068] The sweeping unit 110 includes a roller 111, a shovel bar 112, a roller driving mechanism 113 and a roller transmission mechanism 114. The roller driving mechanism drives the roller 111 to move in a Figure 4 The shovel bar 112 is fixed on the housing 500 and has an arc-shaped working surface. A gap with a uniform distance is formed between the arc-shaped working surface and the outer circumference of the roller 111.

[0069] The roller 111 includes an inner hard rubber shaft and a sponge layer wrapped outside the hard rubber shaft. The end of the hard rubber shaft can be fixed to the housing 500 through a bearing or other connecting piece. The roller driving mechanism 113 drives the hard rubber shaft to rotate around its axis through the roller transmission mechanism 114, driving the sponge layer to rotate, so that the surface of the sponge layer performs a circular motion.

[0070] When the drum 111 rolls over the ground, the dry garbage particles on the ground compress and deform the sponge layer, and the sponge layer wraps the dry garbage particles through deformation, so that the dry garbage particles are separated from the ground and rotate with the drum 111. When the drum 111 reaches the position of the shovel bar 112, the dry garbage particles leave the ground and are squeezed by the shovel bar 112, and continue to rotate with the drum 111. When the drum 111 passes the shovel bar 112 and reaches the entrance of the dry garbage collection unit 150, the sponge layer 111b recovers and deforms due to the loss of the pressure of the shovel bar 112, releasing the dry garbage particles wrapped in the sponge layer and bouncing into the dry garbage collection unit 150.

[0071] The axis of the squeezing unit 120 is arranged parallel to the roller 111, and can be fixed to the housing 500 at both ends, or fixed to the housing 500 by a snap-fit ​​structure. The hardness of the squeezing unit 120 is much greater than the hardness of the sponge layer 111b. The distance between the squeezing unit 120 and the axis of the roller 111 is less than the sum of the radii of the two, so that after assembly, the squeezing unit 120 squeezes the surface of the roller. A squeezing area B is formed at the position where the squeezing unit 120 faces the roller 111.

[0072] Figure 7 It is a schematic diagram of the formation of the water squeeze zone. Figure 7 As shown, the squeezing unit 120 interferes with the drum 111, and squeezes the sponge layer 111b of the drum at the interference point. In the figure, the drum 111 rotates clockwise, and a squeezing area B is formed below the squeezing unit 120 in the figure. The water carried on the drum sponge layer 111b flows out after squeezing and is collected by the sewage collection unit 140. After the drum passes the wet garbage, the sponge layer continues to rotate clockwise with the wet garbage. On the drum, the sponge layer between the grounding point M (the position in contact with the ground) and the squeezing point N (the position in contact with the squeezing unit 120) contains sewage. After being squeezed by the squeezing unit 120, the sewage leaves the sponge layer in the squeezing area B and is collected by the sewage collection unit 140, so that the water content of the sponge layer passing through the squeezing point N is unsaturated. When it rotates to the M point again and contacts the ground, it can continue to absorb water. In this way, the cleaning tool can continuously absorb the accumulated water on the ground to avoid the sponge being saturated and unable to absorb water effectively.

[0073] The cleaning tool of the present disclosure further includes a clean water supply unit 160. The clean water supply unit 160 directly or indirectly delivers clean water to the sponge layer 111b. The clean water enters the sponge layer and overflows from the sponge layer when squeezed by the squeezing unit 120, peeling off the dirt attached to the surface of the sponge layer 111b, thereby cleaning the surface of the drum.

[0074] When the roller rolls over the sticky garbage on the ground, the sticky garbage adheres to the surface of the sponge layer 111b. The clean water provided by the clean water supply unit 160 washes away the sticky garbage layer attached to the surface of the sponge layer 111b.

[0075] In order to keep the sponge layer relatively dry after squeezing, the clean water supply unit 160 sets the clean water outlet in the squeezing area. In the squeezing area, the sponge layer 111b absorbs clean water and becomes saturated. After being squeezed by the squeezing unit 120, the wet garbage and water locked in the sponge layer and absorbed from the ground are discharged. The process of liquid discharge takes away the sticky garbage on the surface of the sponge layer 111b, so that the surface of the sponge layer 111b remains clean. Therefore, the present disclosure can clean the surface of the roller brush 111 without the operator having to do it or interrupt the cleaning work. In the process of pushing the roller, the surface of the roller brush in contact with the ground is clean.

[0076] The present disclosure further includes a cleaning unit 130. The cleaning unit 130 is disposed above the entrance of the dry garbage collection unit 150. When the surface of the drum rotates past the upper end of the shovel bar and reaches the entrance of the dry garbage collection unit 150, the solid garbage attached to its surface cannot be separated from the sponge layer 111b by the elasticity and self-weight of the sponge, and the cleaning unit 130 scrapes it off. The scraped garbage falls under the action of its own weight and falls into the dry garbage collection unit 150. The cleaning unit 130 is particularly suitable for some light and small garbage that is easy to adhere, such as paper pieces. The cleaning unit 130 keeps the surface of the sponge layer 111b free of dry garbage.

[0077] The cleaning tool of the present disclosure further includes a water circulation module 200, which includes a sewage collection unit 140 and a clean water supply unit 160 connected by pipelines. Sewage is squeezed out of the drum 111, and the squeezed sewage is collected in the sewage collection unit 140 through the pipeline, and enters the clean water supply unit 160 after purification, and is recycled again, and sprayed to the above-mentioned squeezing area again to clean the roller brush.

[0078] The beneficial effects of the present disclosure are:

[0079] When the present invention is used to clean the floor, the wet outer sponge contacts the floor without raising dust on the floor, and has the effect of a common mop, thereby preventing secondary pollution.

[0080] The outer sponge and the shovel bar cooperate with each other to completely collect solid waste;

[0081] The cleaning unit separates and collects the solid waste attached to the outer sponge, and keeps the surface of the outer sponge free of solid waste;

[0082] The drum absorbs wet garbage on the ground. When the water inside is squeezed out, the sticky garbage attached to the drum surface is peeled off and diluted. The water-soluble part is taken into the sewage tank, and the water-insoluble part is peeled off from the drum and enters the solid garbage tank, so that the sticky garbage can be processed and the dry and wet garbage can be separated.

[0083] The squeezing unit squeezes out the liquid locked in the outer sponge to keep the outer sponge unsaturated, so that the cleaning tool can continuously clean up the liquid garbage;

[0084] The clean water supply unit and the squeezing unit work together to keep the drum in contact with the ground always clean. Therefore, the present invention can clean sticky garbage, especially a mixture of various garbage, and can separate dry and wet garbage, and continuously keep the outer sponge surface of the drum clean.

[0085] The various components and the combination relationship of the components disclosed in the present invention are not unique, and are described one by one below.

[0086] Embodiment of the drum

[0087] Figure 8 FIG. 1 is a schematic diagram of a drum structure according to an embodiment of the present disclosure. Figure 8 As shown, the roller includes a hard rubber shaft 111c located at the axis center and a sponge layer 111b wrapped and fixed on the circumferential surface of the hard rubber shaft.

[0088] The density and hardness of the sponge have a direct impact on the water absorption and water storage rate (also known as water lock). When the density of the sponge increases to a certain extent, the water absorption will decrease, the hardness will increase, and the water storage rate will increase; conversely, when the density of the sponge decreases, the water absorption will increase, the hardness will decrease, and the water storage rate will decrease.

[0089] The roller of this embodiment has only one sponge layer, and the sponge layer 111b is made of polyvinylalcohol (PVA) foam. The density of PVA sponge is 0.25-0.5g / cm3, and the water absorption rate is 0.5-1.5g / cm3. The Shore A hardness of PVA sponge is 40-70. The water storage rate of PVA sponge is 0.2-1.0g / cm3. The sponge layer of the present disclosure has the above characteristics, so compared with the existing single-layer ordinary sponge roller, it has better effects:

[0090] The sponge layer has both suitable water absorption performance and water storage rate, as well as suitable density and hardness. This allows the sponge to deform just right during the mopping process, wrapping the garbage particles, and when turning past the restriction of the shovel bar, it can use its own elasticity to eject most of the garbage particles, detaching them from the sponge layer and dropping them into the dry garbage collection unit, without missing anything. Moreover, when dealing with accumulated water on the ground, the sponge can absorb more water, leaving less water on the mopped bottom surface.

[0091] The sponge layer disclosed in the present invention will not cause the double-layer sponge to be squeezed and separated from each other, thereby reducing the life of the roller.

[0092] The thickness of the sponge layer of the present invention is generally 3-15 mm, and its deformation is sufficient to wrap common granular garbage. The household cleaning tool is equipped with a 5-10 mm thick sponge layer to handle common dry garbage on the household floor.

[0093] The diameter of the roller disclosed in the present invention can be as small as 15 mm or as large as 700 mm.

[0094] For example, a 3mm thick sponge layer is attached to the outside of a solid hard rubber shaft with a diameter of 9mm and assembled into the above-mentioned cleaning tool. It can process dry garbage with small particle size and is used in relatively clean places such as exhibition centers and museums.

[0095] The drum with a diameter of 700mm is generally used outdoors or in places where there are large dry garbage particles.

[0096] On the surface of the drum, a spiral protrusion may be provided, which may be referred to as a first spiral protrusion 111f. Figure 8As shown, there is one spiral protrusion extending from one end of the roller to the other end. In other embodiments, there may be two spiral protrusions, with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller. That is, the starting ends of the two spiral protrusions are located on the same generatrix of the roller. In other embodiments, the arrangement of the two spiral protrusions may be different, such as Fig.14 As shown, two first spiral protrusions 111f start from the same generatrix at both ends of the roller and extend toward the middle in opposite spiral directions. At the proximity of the two spiral protrusions, that is, the middle part of the roller 111, a linear protrusion 111h parallel to the axial direction is provided, and the linear protrusion 111h is connected to the two first spiral protrusions 111f.

[0097] Fig. 9 is a cross-sectional view of a cleaning tool with the above-mentioned roller, Fig.10 for Fig. 9 Schematic diagram of the side appearance; Fig.11 A perspective schematic diagram of an embodiment of a roller; Fig.12 Figure 13 is a schematic diagram of the drum disassembly state; Fig.12 Another perspective diagram of . Figures 8 to 12 As shown, one end of the hard rubber shaft includes a connecting shaft, and the other end is a hollow cylinder.

[0098] One end of the driving motor 113a is fixed to the cleaning head through a fixing seat 113e and a rotating shaft 113c, and the other end can rotate around the rotating shaft at a certain angle. One hollow end of the hard rubber shaft 111c is sleeved on the motor, and this end abuts against the driving motor 113a. The other end of the hard rubber shaft is fixed to a pressing and telescopic device on the cleaning head. The pressing and telescopic device 113f includes parts such as a button, a spring, and a block. When the button is stressed, the compression spring drives the block to move away from the position that abuts against the hard rubber shaft. At this time, the end of the hard rubber shaft 111c can be moved out of the roller mounting slot on the cleaning head housing, and the other end drives the driving motor 113a therein to rotate around the rotating shaft 113c, forming a Fig.12 , 13 The roller 111 can be removed by pulling the roller out of the motor. When the button of the telescopic device is pressed, the block retracts, and when the button is released, the block resets. The reverse operation can be performed to install the roller on the cleaning head. Alternatively, the telescopic device is set on the roller, and when the button is pressed, the spring drives the block to retract and push out from the concave part of the cleaning head housing of the block, so that the roller is freed from the restraint of the cleaning head, and the roller can be easily taken out at this time.

[0099] When a secondary water tank for receiving overflow of sewage is provided between the drum and the extrusion unit, in order to prevent the sewage inlet of the secondary water tank from being blocked, a protrusion 111y (such as Fig.14As shown), the drum rotates and the protrusion 111y sweeps the sewage inlet.

[0100] The roller disclosed in the present invention can also be made into a structure with both ends blocked, and the driving motor is connected to the roller through a connecting piece to drive the roller to rotate. The cleaning tool with the roller driving motor can reduce the operator's thrust on the cleaning tool, which is suitable for operators with insufficient strength.

[0101] The spiral protrusion on the drum can guide the sewage squeezed out of the extrusion unit to a designated location along the thread direction, such as the suction nozzle of a sewage pipe, so as to prevent the sewage from overflowing and causing secondary pollution of the bottom surface.

[0102] In the present disclosure, solid garbage is swept into the garbage box by the drum, and liquid garbage is adsorbed by the drum and then squeezed out into the water tank for treatment. In the whole process, water can circulate multiple times, and garbage (dust) is successfully cleaned. The present disclosure refers to this technology as "water-dust circulation" cleaning technology.

[0103] The present invention utilizes the "water-dust circulation" cleaning technology to achieve self-cleaning of the drum, and combines sweeping, mopping, washing and twisting together, which greatly facilitates the user and can achieve a very good cleaning effect.

[0104] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

[0105] Finally, it should be noted that the above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A cleaning head, characterized in that: include: case; The cleaning module is installed at the bottom and inside of the shell, brings garbage from the ground and separates it inside the shell, and includes a sweeping unit arranged at the bottom of the shell, a squeezing unit arranged in parallel with the sweeping unit, a dry garbage collection unit arranged behind the sweeping unit, a cleaning unit arranged at the entrance of the dry garbage collection unit, and a sewage collection unit; the sweeping unit includes a roller and a shovel bar, and the cleaning unit scrapes the garbage adhering to the surface of the roller and drops it into the dry garbage collection unit; the roller includes a hard rubber and a sponge layer wrapped outside the hard rubber, and the roller scrubs the ground at the grounding point; The squeezing unit squeezes the surface of the roller at the squeezing point to form a squeezing area. After flushing the roller, the squeezed sewage flows along the squeezing area and is collected by the sewage collecting unit. As the drum rotates, the sponge layer at the squeezing point is not saturated with water, and can continue to absorb water when it rotates again to the ground contact point; The cleaning head can clean sticky garbage and can separate dry and wet garbage.

2. The cleaning head according to claim 1, characterized in that: The drum comprises: Hard rubber, with a pressing and retracting device fixed at one end to achieve snap connection / separation with the cleaning head housing; The sponge layer is wrapped and fixed on the circumferential surface of the hard rubber, and the surface of the sponge layer includes thread protrusions to guide the sewage away along the direction of the thread protrusions; Preferably, the cleaning head further comprises: A driving motor having a power output end, one end of the driving motor being fixed to the housing through a fixing seat and a rotating shaft, the other end of the driving motor being rotatable around the rotating shaft at a certain angle, and the other end of the hard rubber being hollow and sleeved on the power output end of the driving motor; Preferably, the driving motor is connected to the hard rubber through a connecting piece to drive the hard rubber to rotate; Preferably, the push-to-telescopic device includes a button, a spring and a block. When the button is subjected to force, the spring is compressed to drive the block to move away from the position of resisting the hard rubber shaft, so that the end of the hard rubber shaft can be moved out of the roller mounting groove on the cleaning head shell.

3. The cleaning head according to claim 2, characterized in that: The thread protrusion is a line extending from one end of the roller to the other end.

4. The cleaning head according to claim 2, characterized in that: The thread protrusions are two in number, with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller respectively.

5. The cleaning head according to claim 2, characterized in that: There are two thread protrusions, which start from the same generatrix at both ends of the roller and extend toward the middle of the roller in opposite spiral directions; Preferably, a linear protrusion parallel to the axial direction is provided in the middle position of the drum, and the linear protrusion is connected to the two threaded protrusions.

6. The cleaning head according to claim 2, characterized in that: The diameter of the roller is 15mm-700mm; Preferably, the sponge layer has a thickness of 3-15 mm; Preferably, the sponge layer is made by foaming polyvinyl alcohol; Preferably, the sponge layer has a density of 0.25-0.5 g / cm3, a water absorption rate of 0.5-1.5 g / cm3, a Shore A hardness of 40-70, and a water storage rate of 0.2-1.0 g / cm3.

7. The cleaning head according to claim 2, characterized in that: A secondary water tank for receiving sewage overflow is provided between the drum and the squeezing unit, and the sewage inlet of the secondary water tank faces the squeezing area; Preferably, a protrusion is provided at one end of the sponge layer, and as the drum rotates, the protrusion sweeps the sewage inlet.

8. A cleaning tool, characterized in that: include: A cleaning head as claimed in any one of claims 1 to 7; The handheld part comprises a cleaning rod and an extension rod. The cleaning rod and the extension rod are connected via a connecting structure, and the cleaning rod is connected to the cleaning head via a hinge structure.

9. The cleaning tool according to claim 8, characterized in that It also includes a driving motor, which includes a fixed end and a power output end, and the fixed end is fixed to the cleaning head shell through a rotating shaft; one end of the hard rubber includes a connecting shaft, and the other end is provided with a hollow blind hole, and a clamping structure is provided in the blind hole. The hollow blind hole accommodates the driving motor, and the hard rubber shaft is connected to the power output end through the clamping structure so that the driving motor can drive the drum to rotate.

10. The cleaning tool according to claim 9, characterized in that Also includes: The water circulation module includes a sewage collection unit and a clean water supply unit connected by pipelines. The sewage squeezed out from the drum surface flows through the sewage area and is collected in the sewage collection unit. After purification, it enters the clean water supply unit and is sprayed to the water squeezing area again.

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