Scrubber sewage backflow side cover assembly and cleaning head mechanism

Abstract

The utility model discloses a sewage backflow side edge cover assembly and a cleaning head mechanism, the sewage backflow side edge cover assembly is installed on one side wall of a cleaning head shell of a scrubber, is used for guiding sewage extruded from a cleaning roller to enter a sewage cavity of an integrated water tank, and comprises a side edge cover body and a first cofferdam; the inner end surface of the side cover body is matched with the flange and the first convex weir to define a sewage guide exhaust channel for guiding sewage into the sewage guide exhaust channel; the first cofferdam extends outwards from the outer edge of the inner end face of the side edge cover body to form a straight wall ring in a surrounding mode to seal the sewage guiding and exhausting channel, liquid leakage of the side wall of the cleaning head mechanism can be prevented, and meanwhile convenience for a user to periodically maintain the sewage guiding and exhausting channel by himself / herself is improved.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202323591235.6, with an application date of December 27, 2023, and an invention title of "A Side Cover Assembly for Sewage Backflow of a Floor Washer and a Cleaning Head Mechanism", the content of which is incorporated herein by reference. Technical Field

[0002] The utility model relates to the technical field of cleaning equipment, and particularly to a side cover assembly for sewage backflow of a floor washer and a cleaning head mechanism. Background Art

[0003] At present, floor washers on the market are mainly classified into pneumatic dust floor washers and water dust circulation floor washers according to the technical route. The cleaning head of the water dust circulation floor washer is provided with a roller assembly for scrubbing the ground, a water squeezing device for squeezing the outer surface of the roller assembly, and a water flow pipeline for delivering clean water to the outer surface of the roller assembly and collecting sewage into a sewage tank. In the second half of the water flow pipeline after passing through the outer surface of the roller assembly, the sewage collection pipeline is a long and narrow side wall channel attached to one end of the side of the cleaning head housing between the outer surface of the roller assembly and the sewage inlet of the sewage tank. When a large amount of cleaning liquid is sprayed on the ground or a large amount of cleaning liquid is added to the clean water tank, after the outer surface of the roller assembly is squeezed by the water squeezing device, a large amount of foam mixed with bubbles generated by the extrusion of the cleaning liquid from the sponge layer on the outer surface of the roller assembly often occurs at the sewage collection end in the water flow channel of the water dust circulation. These foams mixed with bubbles hinder the flow efficiency of the sewage, and at the same time, it is easy to flow along the gaps on the side wall of the cleaning head of the floor washer to the already cleaned ground, resulting in low ground cleaning efficiency and easy slipperiness. Summary of the Utility Model

[0004] In order to further reduce the foam mixed with bubbles generated at the sewage collection end in the water flow channel of the water dust circulation after the outer surface of the roller assembly is squeezed by the water squeezing device when a large amount of cleaning liquid is sprayed on the ground or a large amount of cleaning liquid is added to the clean water tank, and in order to further prevent the foam-like cleaning liquid from leaking through the gaps on the side wall of the cleaning head of the floor washer to the already cleaned ground, the utility model provides a side cover assembly for sewage backflow of a floor washer.

[0005] In a first aspect, an embodiment of the utility model provides a side cover assembly for sewage backflow, which is installed on one side wall of the cleaning head housing of a floor washer and is used to guide the sewage extruded from a cleaning roller into the sewage chamber of an integrated water tank. It is characterized by comprising:

[0006] The side cover body has an inner end surface that cooperates with the flange of the side wall circumference and a first convex weir connected to the flange and forming a closed loop therewith, enclosing a sewage guide and exhaust passage for guiding the sewage squeezed out from the cleaning roller into the sewage chamber, so as to prevent the air pressure discharged to the outside when the sewage is guided to the sewage chamber and the cleaning liquid mixed with bubbles and foam from leaking through the side wall;

[0007] A first cofferdam extends outward from the outer edge of the inner end surface of the side cover body to form a straight wall ring, and cooperates with the convex weir and flange on the side wall to achieve sealing of the sewage exhaust channel;

[0008] A second cofferdam, inside the straight wall ring, extends outward from the outer edge of the inner end surface of the side cover body to form a straight wall inner ring, and cooperates with the convex weir on the side wall to seal the sewage guide and exhaust channel in the sewage guide and exhaust channel;

[0009] The first cofferdam and the second cofferdam cooperate with the convex weir and the flange on the side wall to achieve sealing of the exhaust channel, and an exhaust port is provided on the side wall in the exhaust channel in a region corresponding to the outer surface of the cleaning roller.

[0010] In one or some optional embodiments, the first convex weir is U-shaped, with both ends of the first convex weir connected to the flange and a part of the flange forming a closed ring to enclose the sewage exhaust channel.

[0011] In one or some optional embodiments, the side wall is provided with a clean water suction pipe for sucking clean water from the integrated water tank and a clean water delivery pipe for delivering clean water to the cleaning groove of the cleaning head shell facing the surface of the cleaning roller, the other end of the clean water suction pipe is connected to a water pump suction port, and the other end of the clean water delivery pipe is connected to the water outlet of the water pump.

[0012] In one or some optional embodiments, a clean water outlet and a sewage inlet are provided at the end of the integrated water tank docking with the side wall, one end of the sewage guiding channel is connected to the sewage outlet of the cleaning tank and the other end is connected to the sewage inlet, and one end of the exhaust channel is connected to the exhaust port and the other end is connected to the sewage inlet.

[0013] In one or some optional embodiments, a sewage return outlet connected to the sewage inlet is provided on the side wall in the sewage guiding channel; an exhaust outlet connected to the sewage inlet is provided on the side wall in the exhaust channel.

[0014] In one or some optional embodiments, a retractable sewage valve core is provided at the sewage inlet of the integrated water tank.

[0015] In one or some optional embodiments, a second convex weir is provided on the side wall within the closed loop to independently form a small closed loop, enclosing the sewage channel.

[0016] In one or some alternative embodiments, an abutting interface is provided on the back of the upper straight edge of the second convex weir, and the abutting interface elastically abuts against the sewage valve core at the sewage inlet. When the integrated water tank is inserted into the cleaning head housing and installed in place, the abutting interface simultaneously opens the sewage guiding channel and the exhaust channel.

[0017] In one or some alternative embodiments, the height at which the flange extends outward from the cleaning head housing is the same as that of the first convex weir and higher than the height of the second convex weir.

[0018] In one or some alternative embodiments, the height at which the flange extends outward from the cleaning head housing is higher than the height of the first convex weir by the wall thickness of the side cover body, and the first convex weir is at the same height as the second convex weir.

[0019] In one or some alternative embodiments, a second convex weir that jointly forms a small closed ring with the first convex weir is further provided on the side wall within the closed ring to enclose the sewage guiding channel. The second convex weir starts from the long straight edge of a section of the first convex weir, wraps around the sewage return port, then extends forward in parallel with the horizontal edge of the first convex weir, continues to wrap around the sewage outlet, and then converges downward with the horizontal edge of the first convex weir.

[0020] In one or some alternative embodiments, the second cofferdam and the first cofferdam jointly form a straight wall inner ring. Corresponding to the side wall, the second cofferdam starts from the long straight edge of a section of the first cofferdam, wraps around the sewage return port, then extends forward in parallel with the horizontal edge of the first cofferdam, continues to wrap around the sewage outlet, and then converges downward with the horizontal edge of the first cofferdam.

[0021] In one or some alternative embodiments, a first cofferdam sealing ring for blocking the sewage guiding and exhaust channel on the side wall is provided on the outer wall of the first cofferdam, and a second cofferdam sealing ring for blocking the sewage guiding channel on the side wall is provided on the outer wall of the second cofferdam.

[0022] In one or some alternative embodiments, the first cofferdam sealing ring and the second cofferdam sealing ring are made of elastic materials and can be directly elastically sleeved on the first cofferdam and the second cofferdam respectively, or the first cofferdam sealing ring and the second cofferdam sealing ring are directly formed on the first cofferdam and the second cofferdam through a secondary encapsulation process.

[0023] Second aspect, the embodiment of the present invention further provides a cleaning head mechanism, which is characterized by including:

[0024] A cleaning head housing, with the upper part between the two side walls at the front end being open;

[0025] A cleaning roller and a brush assembly are clamped on both side walls of the front end of the cleaning head housing;

[0026] An integrated water tank that can be laterally inserted into or withdrawn from the middle and rear ends of the cleaning head housing;

[0027] A detachable upper cover is provided to cover the opening of the cleaning roller and the brush assembly which are clamped to the front end of the cleaning head housing;

[0028] And the sewage return side cover assembly as described in the first aspect is used to guide the sewage squeezed out from the cleaning roller into the integrated water tank.

[0029] In one or some optional embodiments, the first convex weir is U-shaped, with both ends of the first convex weir connected to the flange and a part of the flange forming a closed ring to enclose the sewage exhaust channel.

[0030] In one or some optional embodiments, the side wall is provided with a clean water suction pipe for sucking clean water from the integrated water tank and a clean water delivery pipe for delivering clean water to the cleaning groove of the cleaning head shell facing the surface of the cleaning roller, the other end of the clean water suction pipe is connected to a water pump suction port, and the other end of the clean water delivery pipe is connected to the water outlet of the water pump.

[0031] In one or some optional embodiments, a clean water outlet and a sewage inlet are provided at the end of the integrated water tank docking with the side wall, one end of the sewage guiding channel is connected to the sewage outlet of the cleaning tank and the other end is connected to the sewage inlet, and one end of the exhaust channel is connected to the exhaust port and the other end is connected to the sewage inlet.

[0032] In one or some optional embodiments, a sewage return outlet connected to the sewage inlet is provided on the side wall in the sewage guiding channel; an exhaust outlet connected to the sewage inlet is provided on the side wall in the exhaust channel.

[0033] In one or some optional embodiments, a retractable sewage valve core is provided at the sewage inlet of the integrated water tank.

[0034] In one or some optional embodiments, a second convex weir is provided on the side wall within the closed loop to independently form a small closed loop, enclosing the sewage channel.

[0035] In one or some optional embodiments, an abutment interface is provided on the back side of the upper straight edge of the second convex weir, and the abutment interface elastically abuts against the sewage valve core at the sewage inlet. When the integrated water tank is inserted into the cleaning head shell and installed in place, the abutment interface simultaneously opens the sewage guiding channel and the exhaust channel.

[0036] In one or some alternative embodiments, the height of the flange protruding outward from the cleaning head housing is the same as that of the first convex weir and higher than the height of the second convex weir.

[0037] In one or some alternative embodiments, the height of the flange protruding outward from the cleaning head housing is higher than the height of the first convex weir by the wall thickness of the side cover body, and the first convex weir is flush with the second convex weir.

[0038] In one or some alternative embodiments, a second convex weir that forms a small closed loop together with the first convex weir is further provided on the side wall within the closed loop, enclosing the sewage guiding channel. The second convex weir starts from a long straight side of the first convex weir, wraps around the sewage return port, then extends forward in parallel with the horizontal side of the first convex weir, continues to wrap around the sewage outlet, and then converges downward with the horizontal side of the first convex weir.

[0039] In one or some alternative embodiments, the second weir and the first weir together form a straight inner wall ring. Corresponding to the side wall, the second weir starts from a long straight side of the first weir, wraps around the sewage return port, then extends forward in parallel with the horizontal side of the first weir, continues to wrap around the sewage outlet, and then converges downward with the horizontal side of the first weir.

[0040] In one or some alternative embodiments, a first weir sealing ring for blocking the sewage guiding exhaust channel on the side wall is provided on the outer wall of the first weir, and a second weir sealing ring for blocking the sewage guiding channel on the side wall is provided on the outer wall of the second weir.

[0041] In one or some alternative embodiments, the first weir sealing ring and the second weir sealing ring are made of elastic materials and can be directly elastically sleeved on the first weir and the second weir respectively, or the first weir sealing ring and the second weir sealing ring are directly formed on the first weir and the second weir through a secondary rubber coating process.

[0042] The beneficial effects of the above technical solutions provided by the embodiments of the present invention at least include:

[0043] An embodiment of the utility model provides a sewage return side cover assembly. On the one hand, the sewage return side cover assembly is used to block the sewage guiding and exhaust channel on the cleaning head of the floor washer to prevent the air pressure discharged to the outside when the sewage is guided into the sewage chamber of the integrated water tank and the cleaning liquid mixed with bubbles and foam from leaking through the side wall. On the other hand, when the sewage flows along the sewage guiding channel into the sewage chamber of the integrated water tank, even if there is not enough space in the sewage guiding channel to defoam the residual cleaning liquid mixed with bubbles and foam in the sewage, the cleaning liquid mixed with bubbles and foam can flow into the sewage chamber along the sewage guiding channel. Since the exhaust channel opened by the abutting interface on the back of the second convex weir can always discharge the air pressure that needs to be discharged in the sewage chamber after the sewage enters, the cleaning liquid with bubbles and foam in the sewage chamber can continue to defoam automatically until all the bubbles dissipate naturally when the pressure inside and outside the sewage chamber is balanced. On the other hand, through the sealing of the side wall of the cleaning head of the floor washer by a simple assembly of the sewage return side cover assembly, two functions of dredging water and discharging pressure outward for the sewage guiding channel and the exhaust channel are realized by one part, which improves the convenience for users to maintain the sewage guiding and exhaust channel regularly by themselves.

[0044] The cleaning head mechanism provided with the sewage return side cover assembly in the embodiment of the utility model can realize the automatic defoaming of the cleaning liquid mixed with bubbles and foam in the sewage channel inside the cleaning head, prevent the side wall of the cleaning head mechanism from leaking liquid, and also improve the convenience for users to maintain the sewage guiding and exhaust channel regularly by themselves.

[0045] Other features and advantages of the present utility model will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings.

[0046] The technical solutions of the present utility model will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0047] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0048] Figure 1 It is a schematic structural diagram of a floor washer drag head configured with the sewage return side cover assembly of the present utility model.

[0049] Figure 2 It is a three-dimensional view of an integrated water tank cooperating with the drag head housing configured with the sewage return side cover assembly of the present utility model.

[0050] Figure 3 Exploded view of the floor washer head configured with the sewage return side cover assembly of the present utility model.

[0051] Figure 4 For Figure 3 Partial enlarged view at position A in

[0052] Figure 5 Stereogram of the embodiment of the sewage return side cover assembly of the present utility model.

[0053] Figure 6 Front view of the embodiment of the sewage return side cover assembly of the present utility model.

[0054] Figure 7 For Figure 6 Section view taken in the direction of B in

[0055] Figure 8 For Figure 6 Section view taken in the direction of C in

[0056] Figure 9 Left view of the embodiment of the sewage return side cover assembly of the present utility model.

[0057] Figure 10 For another embodiment of the floor washer head configured with the sewage return side cover assembly of the present utility model in Figure 3 Partial enlarged view at position A in

[0058] Figure 11 Stereogram of another embodiment of the sewage return side cover assembly of the present utility model.

[0059] Figure 12 For another embodiment of the sewage return side cover assembly of the present utility model in Figure 6 Section view taken in the direction of B in

[0060] Figure 13 For another embodiment of the sewage return side cover assembly of the present utility model in Figure 6 Section view taken in the direction of C in

[0061] Reference numerals:

[0062] 1 is an integrated water tank, 11 is the clean water outlet; 12 is the sewage inlet;

[0063] 2 is the cleaning head housing, 21 is the clean water suction pipe, 22 is the clean water delivery pipe;

[0064] 20 is the cleaning head housing body, 201 is the flange, 202 is the first convex weir, 203 is the second convex weir, 204 is the sewage outlet, 204a is the first sewage outlet, 204b is the second sewage outlet, 205 is the return sewage port, 206 is the exhaust outlet, 207 is the exhaust port;

[0065] 21 is the clear water extraction pipe, and 22 is the clear water delivery pipe;

[0066] 3 is the detachable upper cover;

[0067] 4 is the roller;

[0068] 5 is the cleaning roller;

[0069] 6 is the sewage return side cover assembly, 60 is the side cover body, 60a is the handle chamfer edge, 601 is the first weir, 602 is the second weir, 601a is the first weir sealing ring, and 602a is the second weir sealing ring;

[0070] M is the exhaust passage, and N is the sewage guiding passage. Detailed implementation manners

[0071] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0072] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0073] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0074] The patents with the application numbers CN202123103793.4 and CN202111512775.3 of the applicant disclose a water-dust circulating cleaning head and a cleaning tool. The cleaning head includes a housing and a cleaning roller disposed on the housing and partially contacting the cleaning surface to clean garbage. The cleaning head further includes a cleaning roller disposed parallel to the cleaning roller to clean the surface of the cleaning roller. Along the length direction of the cleaning roller, there are a pressing strip and a water-sealing strip. The pressing strip and the water-sealing strip contact the surface of the cleaning roller to form a sealed cleaning tank. The cleaning tank is provided with a clean water inlet communicating with a clean water tank and a sewage outlet communicating with a sewage tank. A transfer and filtration chamber is provided between the sewage tank and the cleaning tank. The cleaning tank, the transfer and filtration chamber, and the sewage tank form a water-washing flow path for cleaning the surface of the cleaning roller. During cleaning, setting a transfer and filtration chamber in the water-washing flow path can avoid the phenomenon of uneven and discontinuous water volume in the cleaning tank caused by air existing in the water-washing flow path, and improve the cleaning effect. As Figure 7 , Figure 10 shown, a transfer and filtration chamber 160 and a water tank are provided on the housing of the cleaning head. The water tank is a semi-closed frame-shaped water tank structure and is disposed on the side of the cleaning roller. The open end of the water tank 195 is connected to Figure 3 the pressing water rod 120 and the water-sealing strip 130 shown in. The pressing water plate, the water-sealing strip, and the surface of the cleaning roller 110 form a water storage space communicating with the water tank, gather and drain the sewage extruded from the cleaning roller 110 into the water storage space, and then converge to the transfer and filtration chamber 160 through the water tank.

[0075] In order to increase the standby time of the floor washer and reduce the noise, the applicant filed a patent application for invention CN202310475474.0 on April 27, 2023. The invention discloses a floor washer, including: a handle, a cleaning head, and an integrated water tank. The cleaning head includes a housing rotatably connected to the handle. The integrated water tank includes a clean water chamber and a sewage chamber and is installed in the rear half of the housing in a horizontally lying state with one-sided access to provide clean water for cleaning the cleaning head and collect the sewage after cleaning. The cleaning head further includes a motor installed on one side of the housing, a roller assembly sleeved on the motor, and a brush assembly straddling both sides of the housing. The motor drives the roller assembly to rotate, thereby driving the brush assembly to rotate synchronously. The floor washer provided by the present invention has a simple structure, reduces the weight on the handle, and can make the user feel lighter when pushing or pulling the floor washer. It can increase the standby time of the floor washer without increasing the volume of the floor washer, and at the same time can reduce the noise of the floor washer in the working state. As Figure 3 , Figure 9 shown, in one embodiment, the sewage pipeline 802 includes a sewage delivery pipeline 8022 formed by a circle of cofferdam grooves on the inner layer 4031 of the second side plate of the housing 40 from the water tank structure to the inlet of the sewage chamber 502.

[0076] After continuous improvement, testing, and verification, the inventor found that, on the one hand, in a floor washer with a split water tank where the clean water tank and the sewage tank are separated, for example, in the technical solutions disclosed in the patents with application numbers CN202123103793.4 and CN202111512775.3 of the applicant, the water tank on the side of the floor washer cleaning head does converge sewage to the transfer and filtration bin. It can indeed filter the garbage in the sewage and defoam the residual cleaning liquid in the sewage through the filter holes at the same time, which can avoid the problem that the foam mixed with bubbles in the sewage hinders the flow efficiency of the sewage. However, when the entire space of the floor washer cleaning head is very limited, setting aside a part of the space to arrange the transfer and filtration bin will invisibly increase the volume of the entire cleaning head, and the limited home space required by the user to place the floor washer will also be occupied more, and the user needs to manually push or pull the larger-sized floor washer cleaning head when using the floor washer. On the other hand, in the solution of setting an integrated water tank in the floor washer cleaning head, for example, in the technical solution disclosed in the invention patent application CN202310475474.0, the sewage delivery pipeline on the side of the floor washer cleaning head does not have enough space to defoam the cleaning liquid mixed with bubbles in the residual sewage. When the entire space of the floor washer cleaning head is very limited, additionally adding a transfer and filtration bin will occupy the space for holding clean water or sewage in the water tank.

[0077] Based on this, the present utility model provides a sewage reflux side cover assembly for a floor washer to solve the problem that the foam mixed with bubbles in the sewage flowing back to the sewage chamber hinders the flow efficiency of the sewage, and at the same time, it can also ensure that the space for holding clean water or sewage in the water tank remains unchanged. The following will be described through specific embodiments.

[0078] The solutions of this application will be described in detail below with reference to the accompanying drawings.

[0079] In the first aspect, referring to Figure 3 As shown, this embodiment provides a sewage reflux side cover assembly 6, which is installed on one side wall (not marked in the attached drawing) of the cleaning head housing 2 of the floor washer, and is used to block the sewage guiding and exhaust channel (not marked in the attached drawing) surrounded by the convex weir and the flange 201 on this side wall to prevent the air pressure when the sewage is guided to the sewage chamber (not marked in the attached drawing) from being discharged to the outside and the cleaning liquid mixed with bubbles in the foam from leaking through this side wall.

[0080] Referring to Figure 3 、 Figure 4As shown, the cleaning head housing 2 includes a cleaning head housing body 20, and the front upper part of the cleaning head housing body 20 is provided with a cleaning groove (not marked in the drawings) connected to the two side walls, one end face of the cleaning groove faces the outer surface of the cleaning roller 5, and a squeezing strip (not marked in the drawings) elastically abutting against the outer surface of the cleaning roller 5 is provided on the end face, and a filtering device (not marked in the drawings) that is an integral part of the entire cleaning groove is provided in other areas of the end face other than the squeezing strip, and the cleaning groove is communicated with the side wall of the cleaning head housing 2, and the area on the side wall that is communicated with the cleaning groove is provided with a first sewage outlet 204a and a second sewage outlet 204b, and these two sewage outlets are collectively referred to as sewage outlets 204. When the floor scrubber is working, the cleaning roller 5 rotates, and the clean water flushed on the outer surface of the cleaning roller 5 is converted into sewage after being squeezed by the squeezing strip, and then passes through the filtering device and flows into the sewage exhaust channel along the channel of the cleaning groove through the first sewage outlet 204a and the second sewage outlet 204b.

[0081] Embodiment 1:

[0082] In this embodiment, refer to Figures 1 to 4 As shown, the front side walls of the cleaning head housing 2 are clamped with a cleaning roller and a brush assembly (not shown in the figure), and the middle and rear ends of the cleaning head housing 2 are provided with an integrated water tank 1 that can be inserted and pulled out laterally. The upper part between the front side walls of the cleaning head housing 2 clamping the cleaning roller and the brush assembly is open, and the open part is covered with a detachable upper cover 3. After removing the detachable upper cover 3, the user can conveniently disassemble and maintain the cleaning roller and the brush assembly. The clean water provided by the integrated water tank 1 can wet the wiping layer on the outer surface of the cleaning roller, so that the wiping layer can clean the ground. The integrated water tank 1 is connected to the cleaning roller through a water delivery pipeline (not shown in the figure), and the water delivery pipeline includes a clean water extraction pipe 21 for sucking clean water from the clean water outlet 11 of the integrated water tank and a clean water delivery pipe 22 for delivering clean water to the cleaning tank (not shown in the figure) on the surface of the cleaning roller. The other end of the clean water extraction pipe 21 is connected to the water suction port of a water pump (not shown in the figure), and the other end of the clean water delivery pipe 22 is connected to the water outlet of the water pump. The end of the integrated water tank 1 that is butted against a side wall of the cleaning head housing 2 is provided with a clean water outlet 11 and a sewage inlet 12. A sewage channel N for recovering sewage to the surface of the cleaning roller is also provided on one side wall of the cleaning head housing 2. The sewage channel N is a section of the sewage exhaust channel that is specifically used for draining sewage and is a part of the sewage exhaust channel. The entire part of the sewage exhaust channel except the sewage channel N is an exhaust channel M. One end of the sewage channel N is connected to the sewage outlet 204 of the cleaning tank, and the other end of the sewage channel N is connected to a sewage return port 205 connected to the sewage chamber of the integrated water tank 1. The sewage return port 205 is connected to the sewage inlet 12 of the integrated water tank 1. An exhaust port 207 is provided on the side wall in the exhaust channel M in an area corresponding to the outer surface of the cleaning roller.

[0083] In this embodiment, as Figure 3 , Figure 4 shown, a flange 201 that forms a closed loop is provided around the circumference of the side wall of the cleaning head housing body 20. Inside the closed loop on the side wall, a first convex weir 202 that connects to the flange 201 and forms a closed inner loop therewith is further provided. The closed inner loop defines the sewage drainage and exhaust channel. The height of the flange 201 extending outward from the housing to the outside of the housing is flush with that of the first convex weir 202. An upper section of the flange 201 and the first convex weir 202 together form a straight wall loop. The left side wall of the floor washer mop head housing 2, this straight wall loop, and the inner wall of the sewage return side cover assembly 6 together define the entire sewage drainage and exhaust channel;

[0084] Further, a second convex weir 203 that can form a small closed loop is also provided inside the closed loop on the side wall. As Figure 10 shown, the second convex weir 203 can cooperate with a part of the first convex weir 202 to define the sewage drainage channel N. Of course, as Figure 4 shown, inside the closed inner loop on the side wall, the second convex weir 203 can also independently define the sewage drainage channel N.

[0085] Further, the first convex weir 202 is U-shaped, and its upper ends are connected to the inner walls of the flange 201.

[0086] The height of the second convex weir 203 is lower than that of the flange 201 and the first convex weir 202. The second convex weir 203 defines a straight wall inner loop smaller than the aforementioned straight wall loop inside the entire sewage drainage and exhaust channel. The left side wall of the floor washer mop head housing 2, this straight wall inner loop, and the inner wall of the sewage return side cover assembly 6 together define the sewage drainage channel N.

[0087] Specifically, as Figure 4As shown, the sewage return side cover assembly 6 is hermetically covered on the side wall of the floor washer head housing 2. When the integrated water tank 1 is inserted into the cleaning head housing 2 and installed in place, the back of the left end of the upper straight edge of the second convex weir 203 of the communication exhaust passage M and the sewage guiding passage N on this side wall elastically abuts against the abutting interface (not shown in the figure) of the sewage valve core (not shown in the figure) of the sewage inlet 12 of the integrated water tank 1. This abutting interface opens the sewage passage for sewage to flow from the sewage outlet 204 through the sewage guiding passage N and then into the sewage inlet 12 through the sewage return port 205 and into the sewage chamber (not shown in the figure). At the same time, this abutting interface also opens another exhaust passage for the air in the sewage chamber to be discharged outside the cleaning head housing 2 when the sewage enters the sewage chamber. When the sewage flows along the sewage guiding passage N into the sewage chamber of the integrated water tank 1, even if there is not enough space in the sewage guiding passage N to defoam the residual cleaning liquid mixed with bubbles in the sewage, the cleaning liquid with bubbles can flow into the sewage chamber along the sewage guiding passage N. Because the opened exhaust passage M can continuously release the air pressure that needs to be discharged in the sewage chamber after the sewage enters, the cleaning liquid with bubbles in the sewage chamber can continue to defoam on its own until the pressure inside and outside the sewage chamber is balanced, and all the bubbles will naturally dissipate.

[0088] Specifically, referring to Figures 3 to 9 As shown, the sewage return side cover assembly 6 includes a side cover body 60, a first weir 601 and a second weir 602 extending outward from the reference plane of the side cover body 60. The side cover body 60 has an outer shape corresponding to the upper edge of the left side wall of the floor washer cleaning head housing 2. The side cover body 60 is provided with a buckle chamfer edge 60a with a chamfer facing the sewage guiding and exhaust passage on the corresponding vertical side of the vertical long side of the first convex weir 202 in the middle area of the integrated water tank 1 installed on this side wall close to the cleaning head housing 2. The side cover body 60 includes a first weir 601 and a second weir 602 extending outward from its reference plane facing the sewage guiding and exhaust passage. The first weir 601 encloses the outer edge of the side cover body 60. The first weir 601 leaves a large distance on the other three sides except the top edge of the side cover body 60. The first weir 601 only leaves a distance equal to the wall thickness of the flange 201 around the side wall at the top edge of the side cover body 60. The first weir 601 is used to block the gap between the entire sewage guiding and exhaust passage and this side wall; The second weir 602 further encloses the sewage guiding passage N in the entire sewage guiding and exhaust passage within the area enclosed by the first weir 601. The second weir 602 is used to block the gap between the sewage guiding passage N and this side wall. As Figure 4 、 Figure 5As shown, a part of the flange 201 around the side wall of the cleaning head shell 2, the first convex weir 202, and the second convex weir 203 together enclose the exhaust channel M. On the sewage return side cover body 60, the area enclosed between the first cofferdam 601 and the second cofferdam 602 is used to block the gap between the exhaust channel M and the side wall. The chamfered edge 60a provided on the vertical long side of the side cover body 60 corresponding to the first convex weir 202 is convenient for the user to have a starting point when the entire sewage return side cover assembly 6 needs to be removed. No other professional tools are required. The user can directly open one side of the entire sewage return side cover assembly 6 by hand through the chamfered edge 60a, and then separate the entire sewage return side cover assembly 6 from the side wall of the cleaning head shell 2.

[0089] Further, such as Figure 5 , Figure 7 , Figure 8 , Figure 9 As shown, a first cofferdam sealing ring 601a for blocking the sewage exhaust channel on the side wall is provided on the outer wall of the first cofferdam 601, and a second cofferdam sealing ring 602a for blocking the sewage exhaust channel N on the side wall is provided on the outer wall of the second cofferdam 601. The first cofferdam sealing ring 601a and the second cofferdam sealing ring 602a are both made of elastic materials, and have sufficient elastic deformation space to block the gap between the first cofferdam 601, the second cofferdam 602 and the sewage exhaust channel. The first cofferdam sealing ring 601a and the second cofferdam sealing ring 602a can use their own elasticity to improve the reliability of the sewage return side cover assembly 6 to seal the entire sewage exhaust channel, and at the same time, the dimensional accuracy requirements of the sewage return side cover body 60, the first cofferdam 601, and the second cofferdam 602 can be appropriately reduced, which can improve the efficiency and yield rate of the floor scrubber in the manufacturing process, and also facilitate the convenience of users to regularly maintain the sewage exhaust channel.

[0090] Furthermore, the first cofferdam sealing ring 601a and the second cofferdam sealing ring 602a can be directly elastically sleeved on the first cofferdam 601 and the second cofferdam 602 respectively, or the first cofferdam sealing ring and the second cofferdam sealing ring are directly formed on the first cofferdam and the second cofferdam through a secondary encapsulation process.

[0091] Further, such as Figure 4As shown, a flange 201 that forms a closed ring is provided around the circumference of the side wall of the cleaning head housing 2. The height of the flange 201 extending outward from the housing is the same as that of the first convex weir 202. The upper section of the flange 201 and the first convex weir 202 together form a straight-wall ring. The left side wall of the cleaning head housing 2, this straight-wall ring, and the inner wall of the sewage return side cover assembly 6 together enclose the entire sewage drainage and exhaust channel. The height of the second convex weir 203 is lower than that of the flange 201 and the first convex weir 202. The second convex weir 203 encloses a straight-wall inner ring smaller than the aforementioned straight-wall ring within the entire sewage drainage and exhaust channel. The left side wall of the cleaning head housing 2, this straight-wall inner ring, and the inner wall of the sewage return side cover assembly 6 together enclose the sewage drainage channel N. Correspondingly, the height dimension of the second weir 602 above the reference plane of the sewage return side cover body 60 is higher than the height dimension of the first weir 601 above the reference plane of the sewage return side cover body 60. Similarly, the height dimension of the second weir sealing ring 602a above the reference plane of the sewage return side cover body 60 is higher than the height dimension of the first weir sealing ring 601a above the reference plane of the sewage return side cover body 60. In this way, even if sewage leakage occurs when the second weir 602 and the second weir sealing ring 602a seal the gap between the sewage drainage channel N and this side wall, the first weir 601 and the first weir sealing ring 601a can still be used to continue sealing the gap between the entire sewage drainage and exhaust channel and this side wall, further improving the sealing reliability of the sewage return side cover assembly 6 of the floor washer for the entire sewage drainage and exhaust channel.

[0092] Embodiment 2:

[0093] In a specific embodiment, based on the aforementioned Embodiment 1, on the side wall of the cleaning head housing 2, the height of the second convex weir 203 is the same as the heights of the left flange 201 of the housing and the first convex weir 202. Correspondingly, the height dimension of the second weir 602 above the reference plane of the sewage return side cover body 60 is also the same as the height dimension of the first weir 601 above the reference plane of the sewage return side cover body 60. Similarly, the height dimension of the second weir sealing ring 602a above the reference plane of the sewage return side cover body 60 is the same as the height dimension of the first weir sealing ring 601a above the reference plane of the sewage return side cover body 60. In this way, even if sewage leakage occurs when the second weir 602 and the second weir sealing ring 602a seal the gap between the sewage drainage channel N and this side wall, the first weir 601 and the first weir sealing ring 601a can still be used to continue sealing the gap between the entire sewage drainage and exhaust channel and this side wall, further improving the sealing reliability of the sewage return side cover assembly 6 for the entire sewage drainage and exhaust channel.

[0094] Embodiment 3:

[0095] In a specific embodiment, based on the aforementioned Embodiment 1, referring toFigure 10 As shown, the second convex weir 203 does not form a complete straight-wall inner ring by itself alone. Instead, it borrows a section of the first convex weir 202. Starting from the long straight side of a section of the first convex weir 202, it wraps around the return sewage outlet 205 and extends forward in parallel with the horizontal side of the first convex weir 202. After continuing to wrap around the sewage outlet 204, it turns downward and converges with the horizontal side of the first convex weir 202. The second convex weir 203 and a part of the first convex weir 202 enclose a straight-wall inner ring smaller than the aforementioned straight-wall ring within the entire sewage guiding and exhaust channel, which can reduce the difficulty of injection molding of the left side wall of the cleaning head housing 2 and reduce the complexity of the entire sewage guiding and exhaust channel composed of double straight-wall rings. Similarly, referring to Figures 11 to 13 As shown, the first cofferdam 601 and the second cofferdam 602 of the sewage return side cover assembly 6 in the "single-layer straight wall" part of the entire sewage guiding and exhaust channel are actually coincident. At the same time, the first cofferdam seal ring 601a and the second cofferdam seal ring 602a of the sewage return side cover assembly 6 in the "single-layer straight wall" part of the entire sewage guiding and exhaust channel are actually also coincident. This also reduces the manufacturing difficulty of the sewage return side cover assembly 6, can improve the efficiency and yield rate during the manufacturing process of the floor washer, and also facilitates the convenience of the user to perform regular maintenance on the sewage guiding and exhaust channel by themselves.

[0096] Embodiment 4:

[0097] In a specific embodiment, based on the aforementioned Embodiment 3, the second convex weir 203 is merely a partition weir that divides the entire sewage guiding and exhaust channel into an upper and a lower structure, namely a sewage guiding channel and an exhaust channel. The exhaust channel is actually jointly formed by the U-shaped lower half of the first convex weir 202 and the straight second convex weir 203. The sewage return side cover assembly 6 has three sides in the "single-layer straight wall" part of the entire sewage guiding and exhaust channel. The first cofferdam 601 and the second cofferdam 602 of the sewage return side cover assembly 6 in the "single-layer straight wall" part of the entire sewage guiding and exhaust channel are actually coincident. At the same time, the first cofferdam seal ring 601a and the second cofferdam seal ring 602a of the sewage return side cover assembly 6 in the "single-layer straight wall" part of the entire sewage guiding and exhaust channel are actually also coincident. This also reduces the manufacturing difficulty of the sewage return side cover assembly 6, can improve the efficiency and yield rate during the manufacturing process of the floor washer, and also facilitates the convenience of the user to perform regular maintenance on the sewage guiding and exhaust channel by themselves.

[0098] The sewage reflux side cover assembly provided by the embodiment of the utility model is used to block the sewage guide exhaust channel on the cleaning head of the floor scrubber to prevent the air pressure discharged to the outside when the sewage is guided to the sewage chamber of the integrated water tank and the cleaning liquid mixed with bubbles and foams from leaking through the side wall. On the other hand, when the sewage flows into the sewage chamber of the integrated water tank along the sewage guide channel, even if the sewage guide channel does not have enough space to defoam the residual cleaning liquid mixed with bubbles and foams in the sewage, the cleaning liquid mixed with bubbles and foams can flow into the sewage chamber along the sewage guide channel. Since the exhaust channel opened by the abutment interface set on the back of the second convex weir can continuously discharge the air pressure that needs to be discharged from the sewage chamber after the sewage enters, the cleaning liquid with bubbles and foams in the sewage chamber can continue to defoam by itself until the pressure inside and outside the sewage chamber is balanced, and all the bubbles will naturally dissipate. On the other hand, by using a simple component of the sewage return side cover assembly to seal the side wall of the cleaning head of the floor scrubber, the two functions of clearing the sewage channel and the exhaust channel and releasing pressure to the outside are achieved through one part, which improves the convenience of users to regularly maintain the sewage channel and the exhaust channel.

[0099] In the second aspect, based on the same inventive concept, this embodiment provides a cleaning head mechanism, referring to Figure 1 , Figure 2 , Figure 3 As shown, the cleaning head mechanism comprises a cleaning head shell 2, the rear end of the cleaning head shell 2 is provided with a roller 4 for supporting the cleaning head mechanism to move forward and backward, the front side walls of the cleaning head shell 2 are clamped with a cleaning roller and a brush assembly (not shown in the drawings), the middle and rear ends of the cleaning head shell 2 are provided with an integrated water tank 1 that can be inserted and withdrawn laterally, the upper part between the front side walls of the cleaning head shell 2 clamped with the cleaning roller and the brush assembly is open, and the open part is covered with a detachable upper cover 3, after removing the detachable upper cover 3, the user can conveniently disassemble and maintain the cleaning roller and the brush assembly;

[0100] The brush assembly is mounted on a brush assembly mounting portion (not shown in the drawings) provided on a side wall of the cleaning head housing 2. A transmission assembly (not shown in the drawings) is also provided on the side wall of the cleaning head housing 2. The transmission assembly is respectively connected to a brush body (not shown in the drawings) of the brush assembly and a cleaning roller 5.

[0101] The cleaning roller 5 can rotate under the action of an external driving force, so as to drive the brush body to rotate in the same direction relative to the cleaning roller 5 through the transmission action of a transmission assembly (not shown in the drawings). When the cleaning roller rotates clockwise, the brush assembly also rotates clockwise, thereby sweeping the surface of the cleaning roller.

[0102] In a specific embodiment, the cleaning head mechanism further includes a trash box (not shown in the drawings) disposed below the brush assembly. The brush body rotates in the same direction as the roller assembly to sweep the surface of the cleaning roller, so that the trash adhered to the surface of the cleaning roller can be swept into the trash box below the brush assembly.

[0103] In a specific embodiment, referring to Figures 1 to 3 As shown, the integrated water tank 1 of the cleaning head mechanism is connected to the cleaning roller through a water delivery pipe (not shown in the figure). The water delivery pipe includes a clear water suction pipe 21 that sucks clear water from the clear water outlet 11 of the integrated water tank and a clear water delivery pipe 22 that delivers the clear water to the surface of the cleaning roller. The other end of the clear water suction pipe 21 is connected to the water suction port of a water pump (not shown in the figure), and the other end of the clear water delivery pipe 22 is connected to the water outlet of the water pump. A sewage guiding channel N for recovering sewage to the surface of the cleaning roller is also provided on one side wall of the cleaning head housing 2. The clear water provided by the integrated water tank 1 can moisten the wiping layer on the outer surface of the cleaning roller, so that the wiping layer can clean the ground.

[0104] The cleaning head mechanism provided with the sewage return side cover assembly in the embodiment of the present invention can achieve self-defoaming of the cleaning liquid mixed with air bubbles and foam in the sewage channel inside the cleaning head, prevent liquid leakage from the side wall of the cleaning head mechanism, and at the same time improve the convenience of the user to regularly maintain the sewage guiding exhaust channel by himself.

[0105] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. The present disclosure is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A sewage return side cover assembly is installed on one side wall of the cleaning head housing of a floor washer and is used to guide the sewage extruded from the cleaning roller into the sewage chamber of the integrated water tank. It is characterized in that include: The side cover body, whose inner end surface cooperates with the flange of the side wall circumference, the first convex weir connected to the flange and forming a closed loop therewith, and the side wall, to enclose a sewage guiding and exhausting channel for guiding the sewage squeezed out of the cleaning roller into the sewage chamber, and an exhaust port is provided in the sewage guiding and exhausting channel in a corresponding area connected to the outer surface of the cleaning roller, and the sewage guiding and exhausting channel includes a sewage guiding channel and an exhausting channel; The first cofferdam extends outward from the outer edge of the inner end surface of the side cover body to form a straight wall ring, and cooperates with the first convex weir and the flange on the side wall to achieve the sealing of the sewage exhaust channel.

2. The side cover assembly for sewage reflux according to claim 1, characterized in that, Also includes: The second cofferdam extends outward from the outer edge of the inner end surface of the side cover body inside the straight-wall ring to form a straight-wall inner ring, and cooperates with the first convex weir on the side wall to achieve sealing of the sewage guiding and exhaust channel inside the sewage guiding and exhaust channel; the first cofferdam and the second cofferdam cooperate with the first convex weir and the flange on the side wall to achieve sealing of the exhaust channel.

3. The side cover assembly for sewage reflux according to claim 2, characterized in that, The first convex weir is U-shaped, with both ends of the first convex weir connected to the flange and a part of the flange forming the closed ring to enclose the sewage-conducting exhaust channel.

4. The side cover assembly for sewage reflux according to claim 1, characterized in that, The side wall is provided with a clean water suction pipe for sucking clean water from the integrated water tank and a clean water delivery pipe for delivering clean water to the cleaning groove of the cleaning head shell facing the surface of the cleaning roller. The other end of the clean water suction pipe is connected to a water pump suction port, and the other end of the clean water delivery pipe is connected to the water outlet of the water pump.

5. The sewage return side cover assembly according to claim 4, characterized in that, A clean water outlet and a sewage inlet are provided at the end where the integrated water tank is connected to the side wall; one end of the sewage channel is connected to the sewage outlet of the cleaning tank and the other end is connected to the sewage inlet; one end of the exhaust channel is connected to the exhaust port and the other end is connected to the sewage inlet.

6. The sewage return side cover assembly according to claim 5, characterized in that A sewage return port communicating with the sewage inlet is provided on the side wall in the sewage guiding channel; an exhaust outlet communicating with the sewage inlet is provided on the side wall in the exhaust channel.

7. The side cover assembly for sewage reflux according to claim 5, characterized in that A retractable sewage valve core is provided at the sewage inlet of the integrated water tank.

8. The side cover assembly for sewage reflux according to claim 2, characterized in that The side wall is also provided with a second convex weir which independently forms a small closed ring within the closed ring, enclosing the sewage channel.

9. The sewage return side cover assembly according to claim 8, characterized in that, An abutment interface is provided on the back side of the upper straight edge of the second convex weir, and the abutment interface elastically abuts against the sewage valve core at the sewage inlet. When the integrated water tank is inserted into the cleaning head shell and installed in place, the abutment interface simultaneously opens the sewage guiding channel and the exhaust channel.

10. The sewage reflux side cover assembly according to claim 9, characterized in that, The height of the flange extending outward from the cleaning head housing is flush with the height of the first convex weir and higher than the height of the second convex weir.

11. The side cover assembly for sewage reflux according to claim 9, characterized in that, The height of the flange extending outward from the cleaning head housing is higher than the height of the first convex weir by the wall thickness of the side cover body, and the first convex weir is flush with the second convex weir.

12. The side cover assembly for sewage reflux according to claim 6, characterized in that, A second convex weir is provided on the side wall within the closed loop to form a small closed loop together with the first convex weir, enclosing a sewage guide channel. The second convex weir starts from a long straight edge of the first convex weir to wrap around the return sewage outlet and then extends forward in the same direction parallel to the horizontal edge of the first convex weir, continues to wrap around the sewage outlet and then merges downward with the horizontal edge of the first convex weir.

13. The sewage reflux side cover assembly according to claim 12, characterized in that, The second cofferdam and the first cofferdam jointly form a straight inner ring. Corresponding to the side wall, the second cofferdam starts from the long straight side of one section of the first cofferdam, wraps around the sewage return port, and then extends forward parallel to the horizontal side of the first cofferdam in the same direction. After continuing to wrap around the sewage outlet, it extends downward and converges with the horizontal side of the first cofferdam.

14. The side cover assembly for sewage reflux according to claim 2, characterized in that, A first cofferdam sealing ring for blocking the sewage guiding and exhaust channel on the side wall is provided on the outer wall of the first cofferdam, and a second cofferdam sealing ring for blocking the sewage guiding channel on the side wall is provided on the outer wall of the second cofferdam.

15. The sewage return side cover assembly according to claim 14, wherein, The first cofferdam sealing ring and the second cofferdam sealing ring are made of elastic materials and can be directly elastically sleeved on the first cofferdam and the second cofferdam respectively. Alternatively, the first cofferdam sealing ring and the second cofferdam sealing ring are directly formed on the first cofferdam and the second cofferdam through a secondary encapsulation process.

16. A cleaning head mechanism, characterized in that, Comprising: A cleaning head housing with an upper opening between the two side walls at the front end; A cleaning roller and a brush assembly, which are clamped on the two side walls at the front end of the cleaning head housing; An integrated water tank that can be horizontally inserted into or withdrawn from the middle and rear ends of the cleaning head housing; A detachable upper cover that covers the open area at the front end of the cleaning head housing where the cleaning roller and the brush assembly are clamped; And a sewage return side cover assembly according to any one of claims 1 to 15, which is used to guide the sewage extruded from the cleaning roller into the integrated water tank.

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