Sewage backflow pressure relief mechanism and scrubber mopping head

Abstract

The utility model discloses a sewage backflow pressure relief mechanism and a scrubber mopping head, the sewage backflow pressure relief mechanism is used for the scrubber mopping head, and the sewage backflow pressure relief mechanism comprises a sewage guide channel and an exhaust channel; the sewage guide channel and the exhaust channel are arranged on one side wall of a mop head shell of the mop head of the scrubber; the sewage guide channel is communicated with a sewage cavity of a water tank of the scrubber and a cleaning roller and is used for guiding sewage generated by the cleaning roller to enter the sewage cavity; the exhaust channel is communicated with the sewage cavity, and an exhaust port is formed in the exhaust channel and used for exhausting air in the sewage cavity from the exhaust port; when the water tank is installed on the mop head shell, the sewage guide channel, the sewage cavity and the exhaust channel form a complete sewage guide and exhaust channel, the purpose of defoaming can be achieved, the situation that foam influences the flowing efficiency of sewage is avoided, and the phenomenon that the foam flows to the cleaned ground to damage the cleanliness and cause the wet and slippery phenomenon is avoided.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202323591187.0, with an application date of December 27, 2023, and an invention title of "A Sewage Return Pressure Relief Mechanism and a Floor Scrubber Head", the content of which is incorporated herein by reference. Technical Field

[0002] The utility model relates to the technical field of cleaning equipment, in particular to a sewage return pressure relief mechanism and a floor scrubber head. Background Art

[0003] At present, floor scrubbers on the market are mainly divided into pneumatic dust floor scrubbers and water dust circulation floor scrubbers according to the technical route. The floor scrubber head of the water dust circulation floor scrubber 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 side of the floor scrubber 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 is often generated at the sewage collection end in the water flow channel of the water dust circulation. This foam is generated by squeezing the cleaning liquid out of the sponge layer on the outer surface of the roller assembly. 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 floor scrubber head 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 floor scrubber head to the already cleaned ground, the utility model provides a sewage return pressure relief mechanism and a floor scrubber head.

[0005] In a first aspect, an embodiment of the utility model provides a sewage return pressure relief mechanism for a floor scrubber head, including a sewage guiding channel and an exhaust channel;

[0006] The sewage guiding channel and the exhaust channel are arranged in the head housing of the floor scrubber head;

[0007] The sewage guiding channel is communicated with the sewage chamber of the water tank of the floor scrubber and the cleaning roller, and is used for guiding the sewage generated by the cleaning roller into the sewage chamber;

[0008] The exhaust passage is in communication with the sewage chamber, and the exhaust passage is provided with an exhaust port for discharging the air in the sewage chamber through the exhaust port;

[0009] Wherein, the exhaust passage surrounds the sewage guiding passage, and the two form a complete sewage guiding and exhaust passage.

[0010] In one or some alternative embodiments, a side cover assembly is further included;

[0011] The towing head housing includes a towing head housing body;

[0012] Both the sewage guiding passage and the exhaust passage are provided on a side wall of the towing head housing body;

[0013] The side cover assembly is used to block the sewage guiding passage and the exhaust passage.

[0014] In one or some alternative embodiments, a flange is further included;

[0015] The flange forms a closed ring on the side wall of the towing head housing body;

[0016] A first convex weir is provided within the closed ring formed by the flange, and the first convex weir is connected to the flange to enclose and form the sewage guiding and exhaust passage;

[0017] Or,

[0018] A first convex weir is provided within the closed ring formed by the flange, and the first convex weir encloses and forms the sewage guiding and exhaust passage;

[0019] A second convex weir is provided within the first convex weir, and the second convex weir can partition the sewage guiding and exhaust passage into the sewage guiding passage and the exhaust passage.

[0020] In one or some alternative embodiments, the second convex weir is in a closed shape, and the second convex weir encloses the sewage guiding passage.

[0021] In one or some alternative embodiments, the second convex weir is in a semi-closed shape;

[0022] The space between the second convex weir and the first convex weir forms the sewage guiding passage.

[0023] In one or some alternative embodiments, when the first convex weir is connected to the flange to enclose and form the sewage guiding and exhaust passage, the first convex weir is in a U shape, and the two upper ends thereof are connected to the inner wall of the flange.

[0024] In one or some alternative embodiments, the water tank includes a water tank body, and an independent sewage inlet and a clean water outlet are provided in the water tank body. The sewage inlet and the clean water outlet are respectively communicated with the sewage chamber and the clean water chamber;

[0025] A sewage valve core elastically connected to the water tank body is provided at the sewage inlet;

[0026] The free end of the second convex weir elastically abuts against the sewage valve core. When the water tank is inserted into the tow head housing and installed in place, the sewage guiding channel and the exhaust channel can be communicated with the sewage chamber.

[0027] In one or some alternative embodiments, the side cover assembly includes a side cover body, and a first weir and a second weir are provided on the side cover body;

[0028] Both the first weir and the second weir are straight walls extending outward from the inner end surface of the side cover body;

[0029] The first weir can be hermetically abutted against a first convex weir provided on the side wall of the tow head housing body to seal the sewage guiding channel;

[0030] The second weir can be hermetically abutted against a second convex weir provided on the side wall of the tow head housing body to seal the exhaust channel.

[0031] In one or some alternative embodiments, elastic sealing rings are provided on the outer walls of both the first weir and the second weir.

[0032] In one or some alternative embodiments, a handle chamfer is provided on the side wall of the side cover body.

[0033] In a second aspect, an embodiment of the present invention further provides a floor washing machine tow head, including a tow head housing, a water tank, a cleaning roller, and the sewage reflux pressure relief mechanism described in the first aspect;

[0034] The water tank is arranged in the tow head housing. Among them, the water tank includes a water tank body, and a sewage chamber and a clean water chamber are provided in the water tank body;

[0035] The cleaning roller is installed at the front end of the tow head housing;

[0036] The tow head housing includes a tow head housing body;

[0037] A sewage guiding channel, an exhaust channel, and an exhaust port are provided on the side wall of the tow head housing body. Among them, the side wall is on the same side as the water outlet end of the sewage chamber.

[0038] In one or some alternative embodiments, a cleaning tank is further included;

[0039] The cleaning tank is detachably connected to the towing head housing, and the cleaning tank is arranged parallel to the cleaning roller;

[0040] A plurality of sewage outlets are provided on the side wall, and the cleaning tank communicates with the sewage guiding channel through the sewage outlets.

[0041] In one or some alternative embodiments, an air dispersion channel is provided in the towing head housing. The air dispersion channel is arranged parallel to the cleaning tank. The air dispersion channel communicates with the exhaust port, and the opening of the air dispersion channel faces the upper surface of the cleaning roller.

[0042] In one or some alternative embodiments, an air dispersion port is provided at one end of the air dispersion channel close to the side wall. One side of the air dispersion port communicates with the exhaust port, and the other side of the air dispersion port communicates with the upper space of the cleaning roller.

[0043] In one or some alternative embodiments, a detachable upper cover is further included, and the detachable upper cover is arranged above the brush assembly and the cleaning roller.

[0044] The beneficial effects of the above technical solutions provided by the embodiments of the present invention at least include:

[0045] The sewage reflux pressure relief mechanism provided by the embodiments of the present invention communicates with the sewage chamber of the water tank of the floor washer and the cleaning roller through the sewage guiding channel, so as to realize guiding the sewage extruded from the cleaning roller of the floor washer to flow back to the water tank. At the same time, by communicating the exhaust channel with the sewage chamber and arranging an exhaust port in the exhaust channel, when the sewage flows along the sewage guiding channel into the sewage chamber of the water tank, even if the sewage guiding channel does not have enough space to defoam the residual cleaning liquid mixed with bubbles and foam in the sewage, the cleaning liquid mixed with bubbles and foam can also flow into the sewage chamber along the sewage guiding channel, and the exhaust port of the exhaust channel is used for exhausting air, so as to relieve the air pressure in the sewage chamber. The cleaning liquid mixed with bubbles and foam in the sewage chamber can continuously defoam by itself until the pressures inside and outside the sewage chamber are balanced, and all the bubbles will naturally dissipate. This avoids the problem of the influence of bubbles and foam on the flow efficiency of sewage, and avoids the phenomenon that the bubbles and foam flow to the cleaned ground to damage the cleanliness and cause slipperiness. It can solve the problem that in the prior art, it is necessary to install a transfer filter chamber to achieve the purpose of defoaming. Since the arranged sewage guiding and exhaust channel does not occupy too much space, there is no need to additionally increase the volume of the towing head of the floor washer, and at the same time, it also avoids occupying the accommodation space of the water tank and the situation that the volume of the water tank for containing sewage or clean water is reduced.

[0046] Other features and advantages of the present invention will be described in the following description, and some of them will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written description and the drawings.

[0047] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0048] The accompanying 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 accompanying drawings:

[0049] Figure 1 It is a schematic structural view of a floor washing machine mop head configured with the sewage reflux pressure relief mechanism of the present utility model;

[0050] Figure 2 It is a three-dimensional view of a water tank cooperating with the mop head housing configured with the sewage reflux pressure relief mechanism of the present utility model;

[0051] Figure 3 It is an exploded view of a floor washing machine mop head configured with the sewage reflux pressure relief mechanism of the present utility model;

[0052] Figure 4 It is Figure 3 The partial enlarged view at A in

[0053] Figure 5 It is Figure 3 The sectional view in the B direction in

[0054] Figure 6 It is Figure 5 The partial enlarged view at J in

[0055] Figure 7 It is a three-dimensional view of another embodiment of a floor washing machine mop head configured with the sewage reflux pressure relief mechanism of the present utility model;

[0056] Figure 8 It is Figure 7 The partial enlarged view at C in

[0057] Figure 9 It is a three-dimensional view of yet another embodiment of a floor washing machine mop head configured with the sewage reflux pressure relief mechanism of the present utility model;

[0058] Figure 10 It is Figure 9 The partial enlarged view at D in

[0059] Figure 11 It is a three-dimensional view of the side cover assembly of the sewage reflux pressure relief mechanism of the present utility model;

[0060] Figure 12 It is the front view of the side cover assembly of the sewage reflux pressure relief mechanism of the present utility model;

[0061] Figure 13 It isFigure 12 Partial sectional view in the direction of F;

[0062] Figure 14 is Figure 12 Partial sectional view in the direction of E;

[0063] Figure 15 Another embodiment of the floor washer head equipped with the sewage reflux pressure relief mechanism of the present utility model is at Figure 3 Partial enlarged view at A in;

[0064] Figure 16 Stereogram of another embodiment of the side cover assembly of the sewage reflux pressure relief mechanism of the present utility model;

[0065] Figure 17 is another embodiment of the side cover assembly at Figure 12 Partial sectional view in the direction of E;

[0066] Figure 18 is another embodiment of the side cover assembly at Figure 12 Partial sectional view in the direction of F;

[0067] Reference numerals:

[0068] 1 water tank, 10 is the water tank body, 10c is the water tank partition, 11 is the clean water outlet, 12 is the sewage inlet;

[0069] 2 is the head housing, 21 is the clean water suction pipe, 22 is the clean water delivery pipe;

[0070] 20 is the 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 sewage flow channel, 206 is the gas flow channel, 207 is the exhaust port, 208 is the air dispersion channel, 209 is the air dispersion port;

[0071] 21 is the clean water suction pipe, 22 is the clean water delivery pipe;

[0072] 3 is the detachable upper cover;

[0073] 4 is the roller;

[0074] 5 is the cleaning roller;

[0075] 6 is the side cover assembly, 60 is the side cover body, 60a is the handle chamfered edge, 601 is the first weir, 602 is the second weir, 601a is the first weir sealing ring, 602a is the second weir sealing ring;

[0076] M is the exhaust channel, N is the sewage guiding channel;

[0077] S is the float assembly, S1 is the float induction magnetic sheet, S2 is the Hall sensor. Detailed implementation mode

[0078] Exemplary embodiments of the present disclosure will be described in more detail below 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.

[0079] 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.

[0080] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "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 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.

[0081] The patents with application numbers CN202123103793.4 and CN202111512775.3 filed by the applicant disclose a water-dust circulating floor washer head and a cleaning tool. The floor washer head includes a housing and a cleaning roller disposed on the housing that is partially in contact with the cleaning surface and used to clean garbage. 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 are in contact with the surface of the cleaning roller to form a sealed cleaning tank. The cleaning tank is provided with a clean water inlet communicating with the clean water tank and a sewage outlet communicating with the sewage tank. A transfer filter chamber is provided between the sewage tank and the cleaning tank. The cleaning tank, the transfer filter chamber, and the sewage tank form a water washing flow path for cleaning the surface of the cleaning roller. During cleaning, by setting a transfer filter chamber in the water washing flow path, it is possible to avoid the phenomenon of uneven and discontinuous water volume in the cleaning tank caused by the air existing in the water washing flow path, and improve the cleaning effect. A water tank is provided on the housing of the floor washer 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 is connected to the water pressing rod and the water sealing strip. The water pressing plate, the water sealing strip, and the surface of the cleaning roller form a water storage space communicating with the water tank, gather and drain the sewage squeezed out from the cleaning roller into the water storage space, and then converge to the transfer filter chamber through the water tank.

[0082] In order to increase the standby duration 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 floor washer head, and a water tank. The floor washer head includes a housing rotatably connected to the handle. The 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 inlet and outlet, providing clean water for cleaning the floor washer head and collecting the sewage after cleaning. The floor washer 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 duration 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.

[0083] 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 head can indeed converge sewage to the transfer and filtration bin to filter the garbage in the sewage. At the same time, the residual cleaning liquid in the sewage can be defoamed through the filter holes, which can avoid the problem that the foam mixed with bubbles in the sewage hinders the flow efficiency of the sewage. However, when the overall space of the floor washer head is very limited, setting aside some space to arrange the transfer and filtration bin will invisibly increase the volume of the entire floor washer head, and the limited home space required by the user to place the floor washer will also be occupied more. When the user uses the floor washer, they need to manually push or pull a bulkier floor washer head.

[0084] On the other hand, in the solution of setting the water tank in the floor washer head, for example, in the technical solution disclosed in the invention patent application CN202310475474.0, there is not enough space in the sewage delivery pipeline on the side of the floor washer head to defoam the cleaning liquid with residual foam mixed with bubbles in the sewage. When the overall space of the floor washer head is very limited, adding an additional transfer and filtration bin will occupy the space for holding clean water or sewage in the water tank.

[0085] Based on this, the present utility model provides a sewage reflux pressure relief mechanism for a floor washer to avoid the phenomenon that the sewage flowing back to the sewage chamber is mixed with foam containing bubbles, further avoid the problem of hindering the flow efficiency of the sewage, and at the same time ensure that the space for holding clean water or sewage in the water tank remains unchanged. The following will be described through specific embodiments.

[0086] The solution of the present application will be described in detail below with reference to the accompanying drawings.

[0087] First aspect

[0088] Refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown in the figure, this embodiment provides a sewage reflux pressure relief mechanism for the mop head of a floor washer, which includes a sewage guiding channel N and an exhaust channel M arranged in the mop head housing 2 of the floor washer. Among them, the exhaust channel M surrounds the sewage guiding channel N, and the two form a complete sewage guiding and exhaust channel (not marked in the attached drawing). The sewage guiding channel is connected to the sewage chamber (not marked in the attached drawing) of the water tank 1 of the floor washer and the cleaning roller 5, and is used to guide the sewage extruded by the cleaning roller 5 of the floor washer into the sewage chamber of the water tank 1. The exhaust channel M is connected to the sewage chamber, and the exhaust channel M is provided with an exhaust port 207. The exhaust channel M is used to timely discharge the air in the sewage in the sewage chamber outside the mop head housing 2, so as to achieve the purpose of releasing the air pressure in the sewage chamber. The cleaning liquid with bubbles in the sewage chamber can continuously defoam by itself until the pressure inside and outside the sewage chamber is balanced, and all the bubbles will naturally dissipate, achieving the purpose of defoaming.

[0089] Through this embodiment, it is possible to solve the problem in the prior art that a transfer filter chamber must be installed to achieve the purpose of defoaming, avoid the problem of the foam affecting the flow efficiency of the sewage, and at the same time avoid the phenomenon that the foam flows to the cleaned ground and destroys the cleanliness and causes slipperiness. Since the arranged exhaust channel M and sewage guiding channel N do not occupy too much space, there is no need to additionally increase the volume of the mop head of the floor washer, and at the same time, it also avoids occupying the accommodation space of the water tank, avoiding the situation of reducing the volume of the sewage or clean water that the water tank can hold.

[0090] In a specific embodiment, referring to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown in the figure, the mop head housing 2 includes a mop head housing body 20. The sewage guiding channel N and the exhaust channel M are arranged on the side wall (not marked in the attached drawing) of the mop head housing body 20. Further, the sewage reflux pressure relief mechanism further includes a side cover assembly 6. The side cover assembly 6 is hermetically covered on the side wall of the mop head housing body 20 to block the sewage guiding and exhaust channel to prevent the air pressure discharged to the outside and the sewage flowing back into the sewage chamber from leaking through the side wall.

[0091] In a specific embodiment, referring to Figure 3 、 Figure 4 As shown in the figure, a flange 201 is provided along the edge of the side wall of the mop head housing body 20. The flange 201 forms a closed ring, and a U-shaped first convex weir 202 is further provided inside the closed ring. The two ends of the first convex weir 202 are connected to the inner wall of the flange 201. Thus, the flange 201 and the first convex weir 202 enclose a closed inner ring, and the closed inner ring forms the sewage guiding and exhaust channel.

[0092] In another embodiment, a flange 201 is provided along the edge of the side wall of the tractor head housing body 20. The flange 201 forms a closed loop, and a first convex weir 202 is further provided within this closed loop. The first convex weir 202 encloses itself to form a closed inner loop, and this closed inner loop forms a sewage drainage and exhaust channel.

[0093] In a specific embodiment, referring to Figure 4 As shown, a second convex weir 203 is further provided within the first convex weir 202, which can partition the sewage drainage and exhaust channel into a sewage drainage channel and an exhaust channel. Specifically, the second convex weir 203 is in a closed shape and can independently enclose the sewage drainage channel N, and the remaining area of the closed loop is the exhaust channel M.

[0094] In another embodiment, referring to Figure 15 As shown, the second convex weir 203 is in a semi-closed shape and can jointly enclose the sewage drainage channel N with a part of the first convex weir 202, and the remaining area of the closed loop is the exhaust channel M. Specifically, the second convex weir 203 does not form a complete straight-wall inner loop by itself, but borrows a section of the first convex weir 202. It starts from the long straight side of a section of the first convex weir 202, wraps around the sewage flow channel 205, extends forward parallel to the horizontal side of the first convex weir 202 in the same direction, continues to wrap around the sewage outlet 204 and then converges downward 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 loop, which is within the entire sewage drainage and exhaust channel and smaller than the straight-wall loop formed by the sewage drainage and exhaust channel. The second convex weir 203 is only a partition weir that divides the entire sewage drainage and exhaust channel into an upper and lower structured sewage drainage channel and exhaust channel. The exhaust channel is actually jointly formed by the U-shaped lower half of the first convex weir 202 and the straight-shaped second convex weir 203, which can reduce the difficulty of injection molding of the left side wall of the tractor head housing body 20 and reduce the complexity of the entire sewage drainage and exhaust channel composed of double straight-wall loops.

[0095] In a specific embodiment, referring to Figures 11 to 14 As shown, the side cover assembly 6 includes a side cover body 60, a first weir 601, and a second weir 602. Among them, both the first weir 601 and the second weir 602 are straight walls extending outward from the inner end face of the side cover body 60. The first weir 601 encloses the outer edge of the side cover body 60. Except for the top edge of the first weir 601, there are relatively large distances between the other three sides of the first weir 601 and the outer edge of the side cover body 60. Among them, there is only a wall thickness distance of the flange 201 between the top edge of the first weir 601 and the top edge of the side cover body 60. The first weir 601 can be in sealed contact with the first convex weir 202 for blocking the entire sewage drainage and exhaust channel, and the second weir 602 can be in sealed contact with the second weir 203 for blocking the sewage drainage channel N.

[0096] It should be noted that, since the foregoing provides two embodiments of the second convex weir 203, there are also two embodiments of the second convex weir 203 of the corresponding side cover assembly 6.

[0097] In a specific embodiment, referring to Figure 4 and Figure 11 , when the second convex weir 203 is in a closed shape, the second cofferdam sealing ring 602a is in a closed shape matching the second convex weir 203.

[0098] In another embodiment, referring to Figures 15 - 18 , when the second convex weir 203 is in a semi-closed shape, the first cofferdam 601 and the second cofferdam 602 of the side cover assembly 6 in the "single-layer straight wall" part of the entire sewage drainage and exhaust channel are actually coincident. This also reduces the manufacturing difficulty of the side cover assembly 6, improves the efficiency and yield rate in the manufacturing process of the floor washer, and is also convenient for users to maintain the sewage drainage and exhaust channel regularly by themselves.

[0099] In a specific embodiment, as Figures 11 to 14 shown, a first cofferdam sealing ring 601a for blocking the sewage drainage and exhaust channel is provided on the outer wall of the first cofferdam 601, and a second cofferdam sealing ring 602a for blocking the sewage channel N is provided on the outer wall of the second cofferdam 602. 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 gaps between the first cofferdam 601, the second cofferdam 602 and the sewage drainage and exhaust channel. The first cofferdam sealing ring 601a and the second cofferdam sealing ring 602a can use their own elasticity to improve the sealing performance of the side cover assembly 6 for the entire sewage drainage and exhaust channel. At the same time, it can also appropriately reduce the dimensional accuracy requirements of the side cover body 60, the first cofferdam 601, and the second cofferdam 602, improve the efficiency and yield rate in the manufacturing process of the floor washer, and also provide convenience for users to maintain the sewage drainage and exhaust channel regularly by themselves.

[0100] 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 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 overmolding process.

[0101] In a specific embodiment, referring to Figure 13 and Figure 14As shown, the second cofferdam 602 is higher than the first cofferdam 601, and correspondingly, the second cofferdam sealing ring 602a is higher than the first cofferdam sealing ring 601a. ​​In this way, even if sewage leakage occurs when the second cofferdam 602 and the second cofferdam sealing ring 602a block the sewage channel N, the first cofferdam 601 and the first cofferdam sealing ring 601a can continue to block the entire sewage channel to prevent sewage from leaking out of the side cover assembly 6, further improving the sealing reliability of the side cover assembly 6 of the scrubber for the entire sewage channel.

[0102] In another embodiment, the second convex weir 203 is flush with the left flange 201 and the first convex weir 202, and accordingly, the second cofferdam 602 is also flush with the first cofferdam 601, and similarly, the second cofferdam sealing ring 602a is flush with the first cofferdam sealing ring 601a. ​​In this way, when the second cofferdam 602 and the second cofferdam sealing ring 602a block the sewage channel N, even if sewage leakage occurs, the first cofferdam 601 and the first cofferdam sealing ring 601a can continue to block the entire sewage channel to prevent sewage from leaking out of the side cover assembly 6, further improving the sealing reliability of the side cover assembly 6 for the entire sewage channel.

[0103] In a specific embodiment, a chamfered edge 60a is provided on the side cover body 60, and the chamfer faces the sewage exhaust passage, so that the user has a starting point when removing the entire side cover assembly 6. No other professional tools are needed, and the user can directly open one side of the entire side cover assembly 6 by hand through the chamfered edge 60a, and then separate the entire side cover assembly 6 from the side wall of the tractor housing body 20.

[0104] In a specific embodiment, referring to Figure 5 , Figure 6 As shown, the water tank 1 includes a water tank body 10, in which an independent sewage inlet 12 and a clean water outlet 11 are provided, and the sewage inlet 12 and the clean water outlet 11 are connected to the sewage chamber and the clean water chamber respectively (not marked in the figure), and a sewage valve core (not marked in the figure) elastically connected to the water tank body 10 is provided at the sewage inlet 12. When the water tank 1 is inserted into the tractor shell 2 and installed in place, the free end of the second convex weir 203 (i.e., the left end of the upper straight edge) forms an abutment interface, which elastically abuts against the sewage valve core, and can connect the sewage channel N and the exhaust channel M with the sewage chamber. Specifically, the sewage channel that flows through the sewage outlet 204, the sewage channel N, the sewage flow channel 205, the sewage inlet 12, and the sewage chamber in sequence is connected, and at the same time, the gas channel of the sewage chamber, the sewage inlet 12, the gas flow channel 206, the exhaust channel M, the exhaust port 207, and the gas channel of the gas dispersion channel 208 are also connected.

[0105] The sewage reflux and pressure relief mechanism provided by the embodiment of the present utility model, on the one hand, is used to guide the sewage extruded from the cleaning roller of the floor washer back to the water tank to prevent the leakage of the air discharged to the outside and the cleaning liquid mixed with bubbles and foam when the sewage is guided to the sewage chamber of the water tank. On the other hand, when the sewage flows into the sewage chamber of the water tank along the sewage guiding channel, even if the sewage guiding channel does not have enough space 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 of the second convex weir can always discharge the air in the sewage chamber, the purpose of releasing the air pressure in the sewage chamber can be achieved, and the cleaning liquid with bubbles and foam in the sewage chamber can continuously defoam by itself until all the bubbles naturally dissipate when the pressure inside and outside the sewage chamber is balanced. On the other hand, by setting a simple side cover assembly, the sealing of the side wall of the mop head housing body is realized, and the functions of dredging water conduction and exhausting air outward for the two channels of 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 channels regularly by themselves.

[0106] On the second aspect

[0107] Based on the same inventive concept, this embodiment provides a floor washer mop head. Referring to Figure 1 , Figure 3 , Figure 7 , Figure 9 as shown, the floor washer mop head includes a mop head housing 2, a water tank 1, a cleaning roller 5 and the sewage reflux and pressure relief mechanism of the first aspect. A water tank 1 is arranged in the mop head housing 2. For the specific setting method, reference can be made to Figure 1 . The water tank 1 that can be inserted or pulled out horizontally is arranged at the middle and rear end of the mop head housing 2. The water tank 1 includes a water tank body 10, and a sewage chamber (not marked in the attached drawing) and a clean water chamber (not marked in the attached drawing) are arranged in the water tank body 10. The mop head housing 2 includes a mop head housing body 20. The cleaning roller 5 is installed at the front end of the mop head housing body 20. A sewage guiding channel N, an exhaust channel M and an exhaust port 207 are arranged on the side wall of the mop head housing body 20, wherein the side wall and the water outlet end of the sewage chamber are on the same side.

[0108] In a specific embodiment, referring to Figure 3 , Figure 4As shown, the tractor head housing 2 is detachably connected to a cleaning tank (not shown in the drawings). Specifically, a cleaning tank connecting both side walls is provided at the upper part of the front end of the tractor head housing 2. One end face of the cleaning tank faces the outer surface of the cleaning roller 5 and is arranged parallel to the cleaning roller 5. An extrusion strip (not shown in the drawings) elastically abutting against the outer surface of the cleaning roller 5 is provided on this end face. A filtering device (not shown in the drawings) integral with the entire cleaning tank is provided in other areas outside the extrusion strip on this end face. The cleaning tank communicates with the side wall of the tractor head housing body 20 (a sewage guiding channel N and an exhaust channel M are provided on this side wall). A first sewage outlet 204a and a second sewage outlet 204b are provided in the area on this side wall communicating with the cleaning tank. These two sewage outlets are collectively referred to as the sewage outlet 204, that is, the cleaning tank communicates with the sewage guiding channel N through the sewage outlet 204. When the floor washer is working, the cleaning roller 5 rotates for cleaning. The sewage generated after cleaning enters the filtering device after being extruded by the extrusion strip, and then flows into the sewage guiding channel N along the channel of the cleaning tank through the first sewage outlet 204a and the second sewage outlet 204b after passing through the filtering device.

[0109] In a specific embodiment, referring to Figures 1 to 4 As shown, brush assemblies (not shown in the drawings) are also clamped on both side walls at the front end of the tractor head housing 2. The brush bodies of the brush assemblies abut against the cleaning roller 5. Specifically, the brush assemblies are installed on a brush assembly installation part (not shown in the drawings) provided on one side wall of the tractor head housing 2. A transmission assembly (not shown in the drawings) is also provided on the side wall of the tractor head housing 2. The transmission assembly is respectively in transmission connection with the brush body of the brush assembly (not shown in the drawings) and the cleaning roller 5. 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 of the transmission assembly. When the cleaning roller rotates clockwise, the brush assemblies also rotate clockwise, so as to be able to brush the surface of the cleaning roller to keep the surface of the cleaning roller 5 clean, thereby maintaining the cleanliness.

[0110] In a specific embodiment, the floor washer tractor head further includes a trash box (not shown in the drawings) provided below the brush assemblies. When the brush bodies brush the surface of the cleaning roller, the garbage adhered to the surface of the cleaning roller can be swept into the trash box below the brush assemblies.

[0111] In a specific embodiment, referring to Figure 3 As shown, the upper parts of the cleaning roller 5 and the brush assemblies clamped at the front end of the tractor head housing 2 are open, and a detachable upper cover 3 is provided to cover the open part. After removing the detachable upper cover 3, users can conveniently disassemble and maintain the cleaning roller 5 and the brush assemblies.

[0112] In a specific embodiment, referring to Figure 7 and Figure 8As shown, on both sides of the front end of the tractor head housing 2, there is also a gas dispersion channel 208 arranged in parallel with the cleaning tank. The cleaning tank and the gas dispersion channel 208 are actually an integral side-lying "S"-shaped crossbeam connecting the two side walls. The opening of the cleaning tank faces upward above the cleaning roller 4, and a detachable cleaning tank sealing cover (not shown in the figure) for sealing the cleaning tank is provided at the opening of the cleaning tank. The opening of the gas dispersion channel 208 faces the upper surface of the cleaning roller 4. This embodiment can achieve the first exhaust path. Specifically, after the sewage enters the sewage chamber along the sewage guiding channel N, the air discharged from the sewage chamber enters the gas dispersion channel 208 through the exhaust channel M and the exhaust port 207. The pores of the sponge layer on the upper surface of the cleaning roller 5 can just absorb the air discharged from the sewage chamber. In this way, when the sewage flows into the sewage chamber of the water tank 1 along the sewage guiding channel N, even if the sewage guiding channel N does not have enough space 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 channel N. Because the exhaust channel M can continuously release the air pressure in the sewage chamber (since the air pressure in the sewage chamber will increase 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.

[0113] In a specific embodiment, referring to Figure 9 、 Figure 10 As shown, at one end of the gas dispersion channel 208 close to the side wall of the tractor head housing body 20 (on this side wall, there are the sewage guiding channel N and the exhaust channel M), there is a gas dispersion port 209 communicating with the exhaust port 207. This embodiment can achieve the second exhaust path. Specifically, the air to be discharged first enters the exhaust port 207 through the exhaust channel M, and then after passing through the gas dispersion port 209, it reaches the gap space between the upper surface of the cleaning roller 5 outside the gas dispersion channel 208 and the detachable upper cover 3. Compared with the previous embodiment, the technical solution of this embodiment adds a second exhaust path, makes full use of the upper surface of the cleaning roller 5 for exhaust, and even if there is moisture and fine foam during the exhaust process, these moisture and fine foam will be absorbed by the pores of the sponge layer on the upper surface of the cleaning roller 5 and are not easily perceived by the user, improving the user experience and further reducing the risk of liquid leakage from the side wall of the tractor head housing body 20.

[0114] In a specific embodiment, rollers 4 for supporting the front and back movement of the floor washing machine tractor head are provided at the rear end of the tractor head housing 2, avoiding the need for the user to lift the floor washing machine tractor head to change the cleaning area, thus avoiding the inconvenience brought thereby and providing more convenience for the user.

[0115] In a specific embodiment, referring to Figure 5 、 Figure 6As shown in the figure, the water tank 1 includes a water tank body 10. A water tank partition 10c that divides the water tank 1 into a clean water chamber and a sewage chamber is provided inside the water tank body 10. A float assembly S is provided on the channel where the sewage inlet 12 of the water tank 1 communicates with the sewage chamber. A float induction magnetic sheet S1 is provided at one end of the float assembly S close to the side wall of the towing head housing body 20. A Hall sensor S2 is provided in the area of the side wall of the towing head housing body 20 corresponding to the float induction magnetic sheet S1. When the sewage chamber is full of sewage, the float assembly S floats up. Under the restriction of a rotating bracket (not shown in the attached drawing), the float assembly S rotates to the position as shown in Figure 6 . The float induction magnetic sheet S1 just abuts against the Hall sensor S2 on the side wall of the towing head housing body 20. The Hall sensor S2 is electrically connected to the control system of the floor washer (not shown in the attached drawing). After the Hall sensor S2 obtains the signal that the sewage chamber is full of sewage, it transmits the signal to the control system, and the control system then notifies the user through the voice broadcast system of the floor washer (not shown in the attached drawing) to promptly dump the sewage and replenish the clean water.

[0116] In a specific embodiment, referring to Figure 1 , Figure 3 , Figures 5 - 7 , Figure 9 As shown in the figure, the water tank 1 is connected to the cleaning roller 5 through a water delivery pipeline (not shown in the attached drawing). The water delivery pipeline includes a clean water suction pipe 21 that sucks clean water from the clean water outlet 11 of the water tank 1, and a clean water delivery pipe 22 that delivers the clean water to the surface of the cleaning roller 5. The other end of the clean water suction pipe 21 is connected to the water suction port of a water pump (not shown in the attached drawing), and the other end of the clean water delivery pipe 22 is connected to the water outlet of the water pump. The clean water provided by the 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.

[0117] The floor washer towing head provided with a sewage reflux pressure relief mechanism in the embodiment of the present invention can realize self-defoaming of the cleaning liquid mixed with air bubbles and foam in the sewage chamber inside the floor washer towing head, prevent liquid leakage from the side wall of the floor washer towing head mechanism, and also improve the convenience for users to regularly maintain the sewage drainage and exhaust channel by themselves.

[0118] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. At the same time, based on the idea of the present application, changes or deformations made by those skilled in the art in the specific implementation manner and application scope of the present application all belong to the protection scope of the present application. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A sewage reflux pressure relief mechanism for a floor washer head. The floor washer head includes a head housing, a water tank detachably installed in the head housing, and a cleaning roller installed at the front of the head housing and rotatable. The head housing has two side walls. The water tank has a clean water chamber and a sewage chamber. It is characterized in that, The sewage return pressure relief mechanism includes: A sewage guiding channel, which is arranged on one side wall of the tractor head housing and is communicated with the sewage chamber and the surface of the cleaning roller, and is used for guiding the sewage generated by the cleaning roller into the sewage chamber; The clear water pumped out from the clear water chamber is transported through the surface of the cleaning roller and then introduced into the sewage guiding channel; An exhaust channel, which is arranged on the same side wall and is communicated with the sewage chamber. The exhaust channel is provided with an exhaust port for discharging the air in the sewage chamber from the exhaust port; The exhaust channel surrounds the sewage guiding channel. When the water tank is installed on the tractor head housing, the sewage guiding channel, the sewage chamber and the exhaust channel form a complete sewage guiding and exhaust channel.

2. The sewage reflux pressure relief mechanism according to claim 1, characterized in that, The end faces of the sewage guiding channel and the exhaust channel facing away from the side wall are open. The sewage return pressure relief mechanism further includes a side cover assembly for sealing the sewage guiding channel and the exhaust channel.

3. The sewage return pressure relief mechanism according to claim 2, wherein The tractor head housing includes a tractor head housing body, and the tractor head housing body has two side walls; The sewage return pressure relief mechanism further includes a flange, and the flange forms a closed ring on one side wall of the tractor head housing body; A first convex weir is arranged inside the closed ring formed by the flange, and the first convex weir is connected to the flange to enclose the sewage guiding and exhaust channel; Or, A first convex weir is arranged inside the closed ring formed by the flange, and the first convex weir encloses the sewage guiding and exhaust channel; A second convex weir is arranged inside the first convex weir, and the sewage guiding and exhaust channel can be partitioned into the sewage guiding channel and the exhaust channel.

4. The sewage reflux pressure relief mechanism according to claim 3, characterized in that, When the first convex weir is connected to the flange to enclose the sewage guiding and exhaust channel, the first convex weir is in a U shape, and the upper ends of both sides thereof are connected to the inner wall of the flange.

5. The sewage return pressure relief mechanism according to claim 3, wherein The second convex weir is in a closed shape, and the second convex weir encloses the sewage guiding channel; Or, the second convex weir is in a semi-closed shape, and the sewage guiding channel is formed between the second convex weir and the first convex weir.

6. The sewage reflux pressure relief mechanism according to claim 5, wherein An independent sewage inlet and a clear water outlet are arranged inside the water tank body, and the sewage inlet and the clear water outlet are communicated with the sewage chamber and the clear water chamber respectively; A sewage valve core elastically connected to the water tank body is arranged at the sewage inlet; The free end of the second convex weir elastically abuts against the sewage valve core. When the water tank is inserted into the tractor head housing and installed in place, the sewage guiding channel and the exhaust channel can be communicated with the sewage chamber.

7. The sewage reflux pressure relief mechanism according to claim 6, characterized in that, The side cover assembly includes a side cover body, and a first weir and a second weir are arranged on the side cover body; Both the first weir and the second weir are straight walls extending outward from the inner end face of the side cover body; The first weir can be hermetically abutted against the first convex weir arranged on the side wall of the tractor head housing body to seal the sewage guiding channel; The second weir can be hermetically abutted against the second convex weir arranged on the side wall of the tractor head housing body to seal the exhaust channel.

8. The sewage reflux pressure relief mechanism according to claim 7, wherein, Elastic sealing rings are arranged on the outer walls of the first weir and the second weir.

9. The sewage reflux pressure relief mechanism according to claim 8, wherein, The side wall of the side cover body is provided with a chamfered corner for the handle.

10. A floor washing machine mop head, characterized in that, It includes a tow head housing, a water tank, a cleaning roller, and a sewage reflux pressure relief mechanism according to any one of claims 1-9; The water tank is arranged in the tow head housing, the water tank includes a water tank body, and a sewage chamber and a clean water chamber are arranged in the water tank body; The tow head housing includes a tow head housing body, the tow head housing body is provided with two side walls, and the cleaning roller is rotatably clamped between the two side walls.

11. The floor washing machine mop head according to claim 10, wherein, It further includes a cleaning tank; The cleaning tank is detachably connected to the tow head housing, and the cleaning tank is arranged parallel to the cleaning roller; A plurality of sewage outlets are arranged on the side wall, and the cleaning tank is communicated with the sewage guiding channel through the sewage outlets.

12. The floor mopping head of the floor washer according to claim 11, characterized in that, A gas dispersion channel is arranged in the tow head housing, the gas dispersion channel is arranged parallel to the cleaning tank, the gas dispersion channel is communicated with the exhaust port, and the opening of the gas dispersion channel faces the upper surface of the cleaning roller.

13. The floor mopping head of the floor washer according to claim 12, wherein A gas dispersion port is arranged at one end of the gas dispersion channel close to the side wall, one side of the gas dispersion port is communicated with the exhaust port, and the other side of the gas dispersion port is communicated with the upper space of the cleaning roller.

14. The floor washing machine mop head according to claim 13, wherein, It further includes a detachable upper cover, brush assemblies are clamped on the two side walls at the front end of the tow head housing, the brush body of the brush assembly abuts against the cleaning roller, and the detachable upper cover covers the brush assemblies and the cleaning roller.

Images