Floor washing robot

Abstract

The invention discloses a floor washing robot which comprises a machine shell, a sewage suction part arranged at the bottom of the machine shell, a sewage tank which can be connected to the machine shell between a first position and a second position in a turnover mode, a negative pressure source which is arranged on the machine shell or the sewage tank and is in airflow communication with a sewage cavity, a sewage discharge pipe and a valve. The sewage tank comprises a sewage chamber in fluid communication with the sewage suction part, the blow-off pipe comprises a first pipe section arranged on the machine shell and a second pipe section arranged on the sewage tank and in fluid communication with the sewage chamber, the first pipe section is detachably connected with the second pipe section, and a blow-off part is arranged at a pipe opening in the lower end of the first pipe section; the blow-off pipe is configured to be in fluid communication with an upper end pipe opening of the first pipe section and a lower end pipe opening of the second pipe section when the sewage tank is located at the first position, and to be separated from the lower end pipe opening of the second pipe section when the sewage tank is turned over from the first position to the second position. The valve is controllably arranged on the second pipe section and is kept in a closed state.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly to a floor washing robot. Background Art

[0002] A floor washing robot is an automated cleaning device widely used in large commercial environments, industrial facilities, warehouses, airports, shopping malls and other places. The floor washing robot is adapted to move on the surface to be cleaned and pick up the sewage on the surface to be cleaned. The floor washing robot generally includes a housing, a sewage tank arranged on the housing, and the sewage tank is communicated with a sewage discharge port or a sewage discharge head on the housing through a sewage discharge pipe. In order to facilitate the maintenance of the pipelines and circuits in the housing, the sewage tank of the floor washing robot is designed to be detachably connected to the housing. However, frequent disassembly of the sewage tank will repeatedly stretch and pull the sewage discharge pipeline, resulting in fatigue damage to the sewage discharge pipeline, leading to rupture or leakage of the sewage discharge pipeline. The leaked sewage is likely to pollute the cleaning body. Summary of the Invention

[0003] In order to solve the above technical problems, the object of the present invention is to provide a floor washing robot that is convenient for maintenance and can protect the sewage discharge pipeline from damage.

[0004] To this end, the present invention provides a floor washing robot adapted to move forward from back to front on the surface to be cleaned, and the floor washing robot includes: A housing; A sewage suction part arranged at the bottom of the housing and configured to suck the sewage on the ground to be cleaned; A sewage tank rotatably connected to the housing between a first position and a second position, and the sewage tank includes a sewage chamber fluidly connected to the sewage suction part; A negative pressure source arranged on the housing or the sewage tank and in air flow communication with the sewage chamber, and the negative pressure source is configured to provide a negative pressure air flow from the sewage suction part into the sewage chamber; A sewage discharge pipe including a first pipe section arranged on the housing and a second pipe section arranged on the sewage tank and fluidly connected to the sewage chamber, and the first pipe section and the second pipe section are detachably connected. A sewage discharge part is arranged at the lower end opening of the first pipe section. The sewage discharge pipe is configured that when the sewage tank is in the first position, the upper end opening of the first pipe section is in fluid connection with the lower end opening of the second pipe section, and when the sewage tank is flipped from the first position to the second position, the upper end opening of the first pipe section is disengaged from the lower end opening of the second pipe section; A valve controllably arranged on the second pipe section, and the valve is configured to remain closed when the sewage tank is flipped from the first position to the second position.

[0005] According to an embodiment of the present invention, a water receiving part is provided at the upper end opening of the first pipe section. The water receiving part is configured such that when the sewage tank is in the first position, the lower end opening of the second pipe section extends into the water receiving part, and when the sewage tank is flipped from the first position to the second position, the lower end opening of the second pipe section is disengaged from the water receiving part.

[0006] According to an embodiment of the present invention, the water receiving part is a water receiving tray or a water receiving funnel.

[0007] According to an embodiment of the present invention, the upper end opening diameter of the first pipe section is larger than the lower end opening diameter of the second pipe section. The sewage discharge pipe is configured such that when the sewage tank is in the first position, the lower end opening of the second pipe section is inserted into the upper end opening of the first pipe section, and when the sewage tank is in the second position, the upper end opening of the first pipe section is disengaged from the lower end opening of the second pipe section.

[0008] According to an embodiment of the present invention, the housing includes a receiving chamber, and an opening communicating with the receiving chamber is provided at the top of the housing. When the sewage tank is in the first position, the sewage tank covers the opening and closes the receiving chamber, and when the sewage tank is flipped from the first position to the second position, the receiving chamber is exposed.

[0009] According to an embodiment of the present invention, a sewage suction pipe is fluidly connected between the sewage suction part and the sewage tank. The sewage suction pipe is configured such that when the sewage tank is in the first position, the sewage suction pipe is hidden in the receiving chamber, and when the sewage tank is flipped from the first position to the second position, a part of the sewage suction pipe is exposed outside the receiving chamber.

[0010] According to an embodiment of the present invention, the negative pressure source includes a suction fan motor or a negative pressure pump. The negative pressure source is configured such that when the sewage tank is in the first position, the negative pressure source is hidden in the receiving chamber, and when the sewage tank is flipped from the first position to the second position, the negative pressure source is exposed outside the receiving chamber.

[0011] According to an embodiment of the present invention, the valve is a one-way solenoid valve, a normally closed solenoid valve or an electromagnetic ball valve. The cleaning robot further includes a controller, and the controller is signal-connected to the valve. The controller is configured to control the valve to remain in a closed state when the sewage tank is flipped from the first position to the second position.

[0012] According to an embodiment of the present invention, a flipping structure is provided between the housing and the sewage tank. The flipping structure includes a flipping bracket and a limiting member. The flipping bracket is disposed on the sewage tank and includes a limiting chute and a positioning groove communicating with the limiting chute. The limiting member is disposed in the housing and is slidably engaged with the limiting chute. The flipping structure is configured such that when the sewage tank is flipped from the first position to the second position, the limiting member slides along the limiting chute to the positioning groove and holds the sewage tank at the second position.

[0013] According to an embodiment of the present invention, the sewage suction part includes a water suction squeegee, and the cleaning robot further includes at least one rolling brush disposed at the bottom of the housing and in front of the sewage suction part.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The floor washing robot of the present invention has a sewage discharge pipe configured as a first pipe section and a second pipe section that are detachably connected. The first pipe section is disposed on the housing and has a sewage discharge part at the lower end opening. The second pipe section is disposed on the sewage tank and is in fluid communication with the sewage chamber. A valve is controllably disposed on the second pipe section. After the sewage tank is flipped upward from the first position to the second position, the valve is configured to remain closed when the sewage tank is flipped from the first position to the second position, preventing the sewage in the sewage chamber from flowing out of the second pipe section after the separation of the first pipe section and the second pipe section, facilitating the user to repair the necessary connection pipelines and connection lines between the sewage tank and the housing, protecting the sewage discharge pipe from damage, and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a floor washing robot according to an embodiment of the present invention; Figure 2 is Figure 1 a schematic cross-sectional view of the floor washing robot shown in Figure 3 is Figure 2 a partial enlarged view of the portion A shown in Figure 4 is Figure 2 a partial enlarged view of the portion B shown in Figure 5 is Figure 1 a schematic diagram of the sewage tank of the floor washing robot shown in Figure 6 is Figure 5 a partial enlarged view of the portion C shown in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0017] according to Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a floor-cleaning robot 100, which is suitable for moving from back to front on a surface to be cleaned, wherein the surface to be cleaned can be a tile surface, a marble surface, or a carpet surface, without specific limitation. The floor-cleaning robot 100 includes a housing 1, a sewage suction part 2, a sewage tank 3, a negative pressure source 4, a sewage pipe 5, and a valve 6.

[0018] A front wheel 14 is installed at the front side of the bottom of the housing 1, and a rear wheel 15 is installed at the rear side of the bottom of the housing 1. A driving assembly (not shown in the figure) is installed on the housing 1 and is connected to the rear wheel 15 and is used to drive the rear wheel 15 to make a circular motion around an axis. The driving assembly can be a driving motor. In other embodiments, the driving assembly can also be connected to the front wheel 14, which is not specifically limited.

[0019] The sewage suction part 2 is disposed at the bottom of the housing 1 and is configured to suck the sewage on the surface to be cleaned. The sewage suction part 2 includes a squeegee 21, which is mounted on the rear side of the bottom of the housing 1. When the cleaning robot 100 moves from the back to the front and performs cleaning operations, the sewage suction part 2 can suck the sewage on the surface to be cleaned located in front of the sewage suction part 2. In other embodiments, the sewage suction part 2 may also include a suction nozzle or a suction pipe, which is not specifically limited.

[0020] In order to facilitate the scrubbing of the surface to be cleaned, the cleaning robot 100 includes a disc-shaped roller brush 7, which is arranged at the bottom of the housing 1 and located in front of the sewage suction part 2. The roller brush 7 is used to clean the surface to be cleaned and push the sewage on the surface to be cleaned toward the sewage suction part 2, so that the sewage suction part 2 can absorb the sewage. In other embodiments, two or more roller brushes 7 can be provided, and the roller brush 7 is not limited to the structure of a roller brush disc, and can also be a roller brush or a roller brush, without specific limitation.

[0021] The sewage tank 2 is installed at the top of the casing 1 . The sewage tank 3 is fluidically connected to the sewage suction part 2 via a sewage suction pipe 22 . The sewage tank 3 includes a sewage chamber 31 .

[0022] The negative pressure source 4 is arranged on the sewage tank 3 and is in air flow communication with the sewage chamber 31. The negative pressure source 4 is configured to generate a negative pressure air flow that enters the sewage chamber 31 from the sewage suction part 2. In this embodiment, the negative pressure source 4 may include a suction fan motor, which can be electrically connected to the battery pack 8 in the housing 1 through a connection line. In other embodiments, the negative pressure source 4 may also be arranged on the housing 1, and the negative pressure source 4 may also be a negative pressure pump, and there is no specific limitation.

[0023] When the floor washing robot 100 is working, the negative pressure source 4 generates a negative pressure air flow that enters the sewage tank 3 from the sewage suction part 2. The air on the surface to be cleaned and the sewage enter the sewage chamber 31 of the sewage tank 3 together. The sewage remains in the sewage chamber 31 of the sewage tank 3, and the air is sucked away by the negative pressure source 4 from the sewage chamber 31 and discharged to the external environment.

[0024] According to Figure 2 and Figure 5 As shown, the sewage tank 3 is pivotally connected to the housing 1 between a first position and a second position. Among them, Figure 2 As shown, the sewage tank 3 is in the first position, Figure 5 As shown, the sewage tank 3 is in the second position.

[0025] According to Figure 4 and Figure 6 As shown, in order to facilitate the user to flip the sewage tank 3 relative to the housing 1 from the first position to the second position, a flipping structure 13 is provided between the housing 1 and the sewage tank 3. The flipping structure 13 includes a flipping bracket 131 and a limiting member 132. The flipping bracket 131 is arranged on the sewage tank 3 and includes a limiting chute 1311 and a positioning groove 1312 communicated with the limiting chute 1311. The limiting member 132 is arranged in the housing 1 and is in sliding fit with the limiting chute 1311. The flipping structure 13 is configured such that when the sewage tank 3 is flipped from the first position to the second position, the limiting member 132 slides along the limiting chute 1311 to the positioning groove 1312 and holds the sewage tank 3 at the second position. After the sewage tank 3 is flipped from the first position to the second position, the user can repair and maintain the necessary connection pipelines and connection lines in the housing 1 below the sewage tank 3.

[0026] According to Figure 5As shown, the housing 1 includes a receiving chamber 11. An opening 12 communicating with the receiving chamber 11 is provided at the top of the housing 1. When the sewage tank 3 is in the first position, the sewage tank 3 covers the opening 12 and closes the receiving chamber 11, and the sewage suction pipe 22 and the negative pressure source 4 are hidden inside the receiving chamber 11. When the sewage tank 3 is flipped from the first position to the second position, the receiving chamber 11 is exposed, and part of the sewage suction pipe 22 and the negative pressure source 4 protrude outside the receiving chamber 11. In other embodiments, the housing 1 may not be provided with the receiving chamber 11. The housing 1 may also provide a frame structure, and the sewage tank 3 is flip-connected to the frame structure and supported on the frame structure, without specific limitation.

[0027] According to Figure 2 and Figure 3 As shown, the sewage discharge pipe 5 includes a first pipe section 51 provided on the housing 1 and a second pipe section 52 provided on the sewage tank 3 and fluidly connected to the sewage chamber 31. The first pipe section 51 and the second pipe section 52 are separably connected, and a sewage discharge portion 511 is provided at the lower end pipe orifice of the first pipe section 51. Among them, the sewage discharge portion 511 is a flexible pipe connected to the lower end pipe orifice of the first pipe section 51, and a through hole for the flexible pipe to extend outside the housing 1 is provided on the housing 1.

[0028] According to Figure 2 and Figure 5 As shown, the sewage discharge pipe 5 is configured such that when the sewage tank 3 is in the first position, the upper end pipe orifice of the first pipe section 51 is fluidly connected to the lower end pipe orifice of the second pipe section 52, and when the sewage tank 3 is flipped from the first position to the second position, the upper end pipe orifice of the first pipe section 51 is disengaged from the lower end pipe orifice of the second pipe section 52. In other embodiments, the sewage discharge portion 511 may also be a sewage discharge nozzle. The sewage discharge nozzle may be connected to the lower end pipe orifice of the first pipe section 51 through a section of pipeline, or the sewage discharge nozzle may be provided on the housing 1, and the sewage discharge nozzle is connected to the lower end pipe orifice of the first pipe section 51 through a section of flexible pipe or pipeline, without specific limitation.

[0029] When the user needs to repair and maintain the sewage discharge pipe 5 and the connection lines inside the housing 1, the user can flip the sewage tank 3 upward relative to the housing 1 to the second position. At this time, the upper end pipe orifice of the first pipe section 51 is disengaged from the lower end pipe orifice of the second pipe section 52. Since the sewage discharge pipe 5 is divided into two separable pipe sections, even if the user frequently flips the sewage tank 3 to perform maintenance operations on the sewage discharge pipe 4 and the connection lines inside the housing 1, the sewage discharge pipe 5 is not easily affected, and it is more convenient for the user to operate.

[0030] According to Figure 3 and Figure 6As shown, the valve 6 is controllably disposed on the second pipe section 52 and is configured to remain closed when the sewage tank 3 is flipped from the first position to the second position. After the user flips the sewage tank 3 from the first position to the second position, since the second pipe section 52 is disengaged from the first pipe section 51, in order to prevent the sewage in the sewage chamber 31 of the sewage tank 3 from leaking through the second pipe section 52 of the sewage discharge pipe 5, and the leaked sewage causes pollution inside or outside the housing 1 or the sewage leaks onto the surface to be cleaned, the valve 6 is usually in the closed state.

[0031] It should be noted that in this embodiment, the valve 6 can be a solenoid valve, such as a normally closed solenoid valve. A controller can be set to be control-connected to the valve 6. When the sewage tank 3 is flipped from the first position to the second position or the cleaning robot 100 is performing a cleaning operation, the valve 6 is in the closed state. When the sewage tank 3 is in the first position and the cleaning robot 100 needs to discharge sewage, the valve 6 is controlled to open, and the sewage in the sewage tank 3 is discharged through the sewage discharge pipe 5 to the sewage discharge site or the designated sewage discharge environment. In other embodiments, the valve 6 can also be a one-way solenoid valve or an electromagnetic ball valve. When the cleaning robot needs to discharge sewage, the valve 6 can be controlled to open by the controller. The valve 6 can also be a manual valve, and the user can also manually open and close the valve 6, which is not specifically limited.

[0032] In order to facilitate the first pipe section 51 and the second pipe section 52 to maintain good fluid communication when the sewage tank 3 is in the first position, and after the sewage tank 3 is flipped from the first position to the second position, the second pipe section 52 is disengaged from the first pipe section 51 and the sewage is not easily leaked from the connection between the first pipe section 51 and the second pipe section 52, a water receiving portion 512 is provided at the upper end pipe orifice of the first pipe section 51. The water receiving portion 512 is configured such that when the sewage tank 3 is in the first position, the lower end pipe orifice of the second pipe section 52 extends into the water receiving portion 512, and when the sewage tank 3 is flipped from the first position to the second position, the lower end pipe orifice of the second pipe section 52 is disengaged from the water receiving portion 512. In this embodiment, the water receiving portion 512 is designed as a funnel structure, such as a water receiving funnel. In other embodiments, the water receiving portion 512 can also be designed as a disk structure, such as a water receiving disk, which is not specifically limited.

[0033] When the sewage tank 3 is in the first position, the lower end pipe orifice of the second pipe section 52 extends into the water receiving portion 512, thereby maintaining the fluid communication between the second pipe section 52 and the first pipe section 51. When the sewage tank 3 is flipped from the first position to the second position, the lower end pipe orifice of the second pipe section 52 is disengaged from the water receiving portion 512, thereby separating the second pipe section 52 from the first pipe section 51.

[0034] In other embodiments, it is not limited to designing the water receiving part 512 at the upper end pipe orifice of the first pipe section 51. The upper end pipe orifice diameter of the first pipe section 51 and the lower end pipe orifice diameter of the second pipe section 52 can also be redesigned. For example, if the upper end pipe orifice diameter of the first pipe section 51 is larger than the lower end pipe orifice diameter of the second pipe section 52, the sewage pipe 5 is configured such that when the sewage tank 3 is in the first position, the lower end pipe orifice of the second pipe section 52 is inserted into the upper end pipe orifice of the first pipe section 51, and when the sewage tank 3 is in the second position, the upper end pipe orifice of the first pipe section 51 is disengaged from the lower end pipe orifice of the second pipe section 52, and there is no specific limitation.

[0035] The technical scope of the present invention is not limited to the content in the above specification. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A floor scrubbing robot, adapted to move from back to front on a surface to be cleaned, characterized in that: The floor scrubbing robot comprises: chassis; A sewage suction part, arranged at the bottom of the housing and configured to suck sewage on the floor to be cleaned; a sewage tank, connected to the housing in a flippable manner between a first position and a second position, the sewage tank comprising a sewage chamber in fluid communication with the sewage suction portion; A negative pressure source, disposed on the housing or the sewage tank and in airflow communication with the sewage chamber, the negative pressure source being configured to provide a negative pressure airflow from the sewage suction portion into the sewage chamber; a sewage discharge pipe, comprising a first pipe section arranged on the housing, and a second pipe section arranged on the sewage tank and in fluid communication with the sewage chamber, wherein the first pipe section and the second pipe section are detachably connected, a sewage discharge portion is arranged at a lower end pipe opening of the first pipe section, and the sewage discharge pipe is constructed such that: when the sewage tank is in the first position, an upper end pipe opening of the first pipe section is in fluid communication with a lower end pipe opening of the second pipe section, and when the sewage tank is turned over from the first position to the second position, an upper end pipe opening of the first pipe section is separated from a lower end pipe opening of the second pipe section; A valve is controllably disposed on the second pipe section, and the valve is configured to maintain a closed state when the sewage tank is flipped from the first position to the second position.

2. The floor scrubbing robot according to claim 1, characterized in that: The upper end pipe opening of the first pipe section is provided with a water receiving portion, and the water receiving portion is constructed as follows: when the sewage tank is in the first position, the lower end pipe opening of the second pipe section extends into the water receiving portion, and when the sewage tank is flipped from the first position to the second position, the lower end pipe opening of the second pipe section is separated from the water receiving portion.

3. The floor scrubbing robot according to claim 2, characterized in that: The water receiving part is a water receiving tray or a water receiving funnel.

4. The floor scrubbing robot according to claim 1, characterized in that: The diameter of the upper end pipe opening of the first pipe section is larger than the diameter of the lower end pipe opening of the second pipe section. The sewage pipe is constructed so that when the sewage tank is in the first position, the lower end pipe opening of the second pipe section is inserted into the upper end pipe opening of the first pipe section, and when the sewage tank is in the second position, the upper end pipe opening of the first pipe section is separated from the lower end pipe opening of the second pipe section.

5. The floor scrubbing robot according to claim 1, characterized in that: The housing includes a accommodating chamber, and an opening communicating with the accommodating chamber is provided on the top of the housing. When the sewage tank is in the first position, the sewage tank covers the opening and closes the accommodating chamber. When the sewage tank flips from the first position to the second position, the accommodating chamber is exposed to the outside.

6. The floor scrubbing robot according to claim 5, characterized in that: A sewage suction pipe is fluidly connected between the sewage suction part and the sewage tank. The sewage suction pipe is constructed as follows: when the sewage tank is in the first position, the sewage suction pipe is hidden in the accommodating chamber; when the sewage tank is flipped from the first position to the second position, the sewage suction pipe is partially exposed outside the accommodating chamber.

7. The floor scrubbing robot according to claim 5, characterized in that: The negative pressure source includes a suction motor or a negative pressure pump, and the negative pressure source is constructed as follows: when the sewage tank is in the first position, the negative pressure source is hidden in the accommodating chamber, and when the sewage tank is flipped from the first position to the second position, the negative pressure source is exposed outside the accommodating chamber.

8. The floor scrubbing robot according to claim 1, characterized in that: The valve is a one-way solenoid valve, a normally closed solenoid valve or an electromagnetic ball valve. The cleaning robot also includes a controller, which is connected to the valve control. The controller is constructed to control the valve to remain closed when the sewage tank flips from the first position to the second position.

9. The floor scrubbing robot according to claim 1, characterized in that: A flip structure is provided between the casing and the sewage tank, the flip structure comprising a flip bracket and a limit member, the flip bracket being provided on the sewage tank and comprising a limit slide and a positioning groove communicating with the limit slide, the limit member being provided in the casing and slidably matched with the limit slide, the flip structure being constructed as follows: when the sewage tank flips from the first position to the second position, the limit member slides along the limit slide to the positioning groove and keeps the sewage tank at the second position.

10. The floor scrubbing robot according to claim 1, characterized in that: The sewage suction part includes a squeegee, and the cleaning robot also includes at least one rolling brush arranged at the bottom of the housing and located at the front side of the sewage suction part.

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