CN115381353B

CN115381353B - Water circulation system and cleaning robot

Info

Publication number: CN115381353B
Application number: CN202211167928.XA
Authority: CN
Inventors: 黄俊生; 张志忠; 梁杰
Original assignee: Lingdu Guangdong Intelligent Technology Development Co Ltd
Current assignee: Lingdu Guangdong Intelligent Technology Development Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-10-27
Anticipated expiration: 2042-09-23
Also published as: CN115381353A

Abstract

The invention relates to the technical field of cleaning machines, in particular to a water circulation system and a cleaning robot. The water circulation system comprises a water supply loop and a sewage loop, the water supply loop comprises a water tank, an exhaust port is arranged on the water tank, a floating piece is arranged in the water tank and is communicated with the exhaust port, and air in the water tank is communicated with the outside of the tank body through the floating piece; the sewage loop comprises a water-gas separation device, the water-gas separation device is provided with an air pressure balance interface, the air pressure balance interface is used for balancing air pressure between the inside of the water-gas separation device and the inside of the water tank, and liquid separated by the water-gas separation device is filtered and then returned into the water tank. The water circulation system provided by the invention enables the recovered sewage to be recovered to the water tank after being filtered through the water supply system and the sewage recovery system, and the water stored in the water tank can be provided for the cleaning robot for reuse. Therefore, the working efficiency of the cleaning robot can be improved, and the water utilization rate can be improved.

Description

Water circulation system and cleaning robot

Technical Field

The invention relates to the technical field of cleaning machines, in particular to a water circulation system and a cleaning robot.

Background

In the cleaning machine, the water circulation system includes a water supply system for supplying water to the water using apparatus and a sewage recovery system for recovering sewage generated by the water using apparatus. At present, the water recovery system relies on the dead weight of water to carry out water-gas separation, and then flows back to the water tank through the dead weight of water for storage, and this kind of water-gas separation mode is only applicable to the water-gas separation function of robot along vertical direction upper and lower removal process, but when cleaning robot moves to the level on vertical wall, water-gas separation device's function inefficacy, consequently need improve water-gas separation device.

Meanwhile, the water tank in the prior art is usually provided with a fixed exhaust port for exhausting, and the structure is arranged, when the water tank is inclined, the internal liquid level of the water tank can submerge the exhaust port to cause exhaust failure, so that the air pressure balance of the water tank is affected, water inflow or water drainage of the water tank is finally difficult, and the water tank is in an air pressure imbalance state for a long time, and the service life of the water tank is also affected. Therefore, the working requirements of the water tank suitable for various robot walking postures cannot be met.

Disclosure of Invention

The invention provides a water circulation system and a cleaning robot, which are used for solving the defect that a water-gas separation device fails when the cleaning robot moves horizontally in the prior art, and the robot cannot keep normal work at a water tank exhaust port under various walking postures, so that the water circulation system of the cleaning machine can keep normal work under different postures and operation modes.

The invention provides a water circulation system and a cleaning robot, comprising: the sewage recycling system comprises a water supply system and a sewage recycling system, wherein the water recycling system comprises a water supply loop and a sewage loop, and the sewage loop is used for recycling and filtering sewage and then inputting the filtered sewage into the water supply loop;

the water supply system comprises a water tank, an exhaust port is formed in the water tank, a floating piece is arranged in the water tank, the floating piece is communicated with the exhaust port through a ventilation hose, and air in the water tank is communicated with the outside of the tank body through the floating piece;

the sewage loop comprises a water-gas separation device, wherein an air pressure balance interface is arranged on the water-gas separation device and used for balancing air pressure in the water-gas separation device, and liquid separated by the water-gas separation device is filtered and then returns to the water tank.

According to the water circulation system and the cleaning robot provided by the invention, the air pressure balance interface is communicated with the inside of the water tank.

According to the water circulation system and the cleaning robot provided by the invention, the water tank further comprises:

the box body is provided with a water filling port, an exhaust port, a water discharging port and a sewage discharging port;

the weight piece is communicated with the water outlet through a water hose, the weight piece moves to the bottom of the box under the action of gravity, and water at the bottom of the box is suitable for being discharged through the weight piece and the water hose;

the pipe joint is detachably connected with the sewage outlet.

the baffle, the baffle is located in the box, just the baffle will the box internal partition is first chamber and second chamber, be equipped with the intercommunicating pore on the baffle, first chamber with the second chamber passes through the intercommunicating pore intercommunication, the breather hose with the floating part is located in the first chamber, the water hose with the counter weight spare is located in the second chamber.

According to the water circulation system and the cleaning robot provided by the invention, the water-gas separation device comprises:

A housing;

a partition member provided in the housing, the partition member partitioning an inner space of the housing into a first space and a second space that are ventilated to each other;

an introduction pipe connected to the housing, the introduction pipe communicating with the first space;

the drain pipe is connected with the shell;

an exhaust pipe connected to the housing, the exhaust pipe communicating with the second space;

the weight piece, the weight piece with the drain pipe passes through the water hose intercommunication, the weight piece with the water hose all is located in the first space, the first space passes through the weight piece the water hose with the drain pipe intercommunication, the weight piece moves under the action of gravity to first space bottom, the water of first space bottom is suitable for through the weight piece the water hose and drain pipe discharge.

According to the water circulation system and the cleaning robot provided by the invention, the partition piece comprises the first plate body and the second plate body which are arranged in an intersecting manner, the ingress pipe is positioned on one side of the first plate body, the exhaust pipe is positioned on the other side of the exhaust pipe, and the second plate body is provided with the hollowed-out part.

According to the water circulation system and the cleaning robot provided by the invention, the cleaning robot further comprises a water-air separation fan, and the air inlet end of the water-air separation fan is communicated with the air outlet.

a housing provided with an inlet, a drain, and an exhaust;

a partition provided in the housing, the partition dividing an inner space of the housing into a first space and a second space communicating with each other; and

a wind driving part located in the first space and capable of driving fluid in the first space to flow to the second space;

the introducing port is communicated with the first space and is used for allowing the fluid to enter the first space from outside the shell;

the water outlet and the air outlet are communicated with the second space, the air outlet is positioned above the water outlet, the water outlet is used for discharging liquid deposited at the bottom of the second space in the fluid, and the air outlet is used for discharging gas positioned above the liquid in the second space.

According to the water circulation system and the cleaning robot provided by the invention, the partition piece comprises:

A communicating pipe body connected and communicating with the introducing pipe;

the installation pipe body, the installation pipe body with communicating pipe body coupling and intercommunication, wind drive part install in the installation pipe body, be equipped with on the installation pipe body uncovered mouth, wind drive part's air-out end with uncovered mouth intercommunication, wind drive part's air inlet end with communicating pipe body intercommunication.

The invention also provides a cleaning robot which comprises the water circulation system.

According to the water circulation system provided by the embodiment of the invention, through the water supply system and the sewage recovery system, sewage can be recovered into the water-gas separation device through the sewage loop, the sewage is reserved in the water-gas separation device, and the sewage can be recovered into the water tank, so that when the inflow and outflow speeds of liquid in the water-gas separation device are too high, gas can flow between the inside of the water-gas separation device and the inside of the water tank through the air pressure balance interface. Therefore, the internal air pressure of the water-gas separation device and the internal air pressure of the water tank can be kept balanced, and the water draining and water recycling processes of the water-gas separation device can be stably performed. The liquid separated by the water-gas separation device is filtered and then returned to the water tank, and the liquid returned to the water tank can be reused.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a water tank according to an embodiment of the present invention;

fig. 2 is a right side view of the water tank of the embodiment of the present invention;

FIG. 3 is a top view of a water tank of an embodiment of the present invention, not including a sealing cover;

FIG. 4 is a cross-sectional view of the tank of an embodiment of the present invention taken at section A-A;

FIG. 5 is a front view of a float member of an embodiment of the present invention;

FIG. 6 is a left side view of a float member of an embodiment of the present invention;

FIG. 7 is a top view of a float member according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a float member of an embodiment of the present invention taken at section B-B;

fig. 9 is a schematic view of the inside state of the water tank in the vertical posture of the water tank according to the embodiment of the present invention;

FIG. 10 is a perspective view of a water-gas separation device provided by the present invention;

FIG. 11 is a cross-sectional view of a water-gas separation device provided by the present invention;

FIG. 12 is a schematic view of the structure of a separator provided by the present invention;

FIG. 13 is a perspective view of a water-gas separation device provided by the present invention;

FIG. 14 is a cross-sectional view of a water-gas separation device provided by the present invention;

FIG. 15 is a cross-sectional view of a water-gas separation device provided by the present invention;

FIG. 16 is a cross-sectional view of a water-gas separation device provided by the present invention;

FIG. 17 is a perspective view of a wind driven component provided by the present invention;

fig. 18 is a schematic view of the application of the water circulation system provided by the invention to the cleaning robot.

Reference numerals:

010. a cleaning robot; 011. a chassis;

100. a water-gas separation device; 110. a housing; 111. a second clamping part;

120. a partition; 121. a first space; 122. a second space; 123. a first plate body; 124. a second plate body; 125. a hollowed-out part; 126. a reinforcing plate; 127. reinforcing ribs; 128. a first clamping part;

130. an ingress pipe; 140. a drain pipe; 150. an exhaust pipe;

160. a weight member; 161. a water hose; 170. a water-gas separation fan; 180. an air pressure balance interface;

100', a water-gas separation device; 110', a housing;

120', a separator; 121', a first space; 122', a second space; 123', communicating pipe body; 124', mounting a tube; 125', a first water deflector; 126' a second water deflector; 127', side guards; 128', a first guide ramp; 129', a second guide ramp;

130', wind driven components; 131', centrifugal impeller; 132', a motor;

140', ingress pipe; 141', an inlet; 150', a drain pipe; 151', drain port; 160', an exhaust pipe; 161', exhaust ports; 170', a water accumulation tank;

200. a water tank; 210. a case; 211. an exhaust port; 212. a water outlet; 213. a sewage outlet; 214. a water filling port; 215. a first chamber; 216. a second chamber; 217. a first component; 2171. a first buckling part; 218. a second component; 2181. a second buckling part; 2191. a mounting plate; 2192. reinforcing ribs; 2193. a functional interface;

220. a weight member; 221. a water hose; 230. a pipe joint;

240. a partition plate; 241. a communication hole; 250. sealing cover; 260. a floating member; 261. a ventilation hose;

262. a main body portion; 2621. a floating head part; 2622. a communication passage; 2623. a hollow chamber; 2624. a connection part; 2625. an air suction hole; 2626. a communication groove;

263. a weight part; 2631. a mounting groove; 264. a connecting nozzle; a. a water line.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The water circulation system of the present invention is described below with reference to fig. 1 to 18. The cleaning robot 010 may be used to clean a glass curtain wall, and belongs to a high-altitude plane wall cleaning robot, and may also be referred to as a "spider man". The cleaning robot 010 is adsorbed on the outer facade of the high building, a brushing-washing-scraping multiple cleaning design is adopted, the cleaning system is closely attached to the wall surface, and each glass is cleaned for many times.

When the cleaning robot 010 works, the used cleaning liquid can be recycled after being recovered and filtered. When the cleaning liquid of the cleaning robot 010 is recovered, the cleaning liquid can be sucked into a specific space or container by a negative pressure device, and the sucked fluid is a mixture including liquid and gas. The recovered mixture is required to pass through the water-gas separation device 100 to separate the cleaning liquid from the gas, the separated cleaning liquid can be stored in the water tank 200, and the cleaning liquid can be used for cleaning the robot 010.

According to an embodiment of the present invention, a water circulation system includes: the sewage recycling system comprises a water supply loop and a sewage loop, and the sewage loop is used for recycling and filtering sewage and then inputting the filtered sewage into the water supply loop. Referring to fig. 2 and 4, the water circulation system includes a water tank 200, an air outlet 211 is provided on the water tank 200, a float member 260 is provided inside the water tank 200, the float member 260 communicates with the air outlet 211 through a vent hose 261, and air inside the water tank 200 communicates with the outside of the water tank 200 through the float member 260. When water is filled into the water tank 200 or discharged outside the water tank 200, the pressure difference between the air inside and outside the water tank 200 changes to block the water filling and discharging process of the water tank 200, and the air pressure inside and outside the water tank 200 can be kept balanced by providing the floating member 260 and the air outlet 211.

The sewage loop includes a water-gas separation device 100. After the recovered water-gas mixture passes through the water-gas separation device 100, the gas in the water-gas mixture is discharged, the sewage is remained in the water-gas separation device 100, and the sewage can be reused after being purified. The water-gas separation device 100 is provided with an air pressure balancing interface 180, and the air pressure balancing interface 180 is used for balancing the air pressure inside the water-gas separation device 100. When the gas speed of the water-gas separation device 100 is too high, the gas outside the water-gas separation device 100 can enter the water-gas separation device through the air pressure balance interface 180; when the gas-water separation device 100 discharges the gas at too low a rate, the gas in the water-water separation device 100 may be discharged from the water-gas separation device 100 through the gas pressure balancing interface 180. Thus, the internal and external air pressures of the water-gas separation device 100 can be kept balanced, and the processes of draining and recovering water of the water-gas separation device 100 can be performed stably. The liquid separated by the water-gas separation device 100 is filtered and returned to the water tank 200, and the liquid returned to the water tank 200 can be reused.

According to the water circulation system of the embodiment of the present invention, sewage can be recycled into the water-gas separation device 100 through the sewage loop, the sewage remains in the water-gas separation device 100 and can be recycled into the water tank 200, and when the inflow and outflow speeds of liquid in the water-gas separation device 100 are too high, gas can flow between the inside of the water-gas separation device 100 and the inside of the water tank 200 through the gas pressure balancing interface 180. Thus, the air pressure inside the water-gas separation device 100 and the air pressure inside the water tank 200 can be kept balanced, and the process of draining and recovering water of the water-gas separation device 100 can be stably performed. The liquid separated by the water-gas separation device 100 is filtered and returned to the water tank 200, and the liquid returned to the water tank 200 can be reused.

In addition, through water supply system and sewage recovery system, the sewage of retrieving can reuse after filtering, and the water after filtering is retrieved to water tank 200, and the water of the storage of water tank 200 can be provided for cleaning robot 010 and is used for washing the curtain. Thus, the working efficiency of the cleaning robot 010 can be improved, and the water utilization rate can be improved.

According to some embodiments of the present invention, the air pressure balancing port 180 communicates with the interior of the water tank 200. The air pressure balancing port 180 may be connected to the air outlet 211 of the water tank 200 through a hose, and may allow air inside the water tank 200 to communicate with air inside the water-air separation device 100, so that the air pressure inside and outside the water tank 200 may be maintained in balance, facilitating the recovery of water to the water tank 200 or the outward drainage of the water tank 200. When the water tank 200 recovers water rapidly, since the air in the water tank 200 is connected with the air in the water-gas separation device 100, the gas in the water tank 200 can be accelerated to be discharged, thereby avoiding affecting the speed of recovering water. Further, when the water tank 200 is filled with water, the overflowed water may enter the water-gas separation device 100 through the float 260, the air hose 261, the drain port 212, and the air pressure balance port 180. Thus, overflowed water can be recovered, and water leakage is avoided.

According to some embodiments of the invention, the wastewater recovery system further comprises a water return pump and a filter. The filter is connected with the drain pipe 140 of the water-gas separation device 100, the sewage collected in the water-gas separation device 100 can be discharged through the drain pipe 140, and the water purified by the filter can be recovered to the water tank 200 to be provided for the cleaning robot 010 to be reused. The water pump is connected with the filter and the water tank 200 to filter the liquid collected in the water-gas separation device 100 and then recycle the filtered liquid into the water tank 200. The purified water is recycled to the water tank 200 through the pipeline, the water pump can provide power to inject the water into the water tank 200, the recycled water can be used for cleaning again, and the water utilization rate can be improved.

According to some embodiments of the present invention, referring to fig. 8, the float 260 includes a body portion 262 and a connector 264. The main body 262 is provided with a communication passage 2622 penetrating the main body 262. The communication channel 2622 may be a cylindrical tubular channel, one end of the communication channel 2622 is located at the top end or the side near the top end of the floating member 260, and the other end is located at the bottom or the side near the bottom of the main body 262, and the communication channel 2622 connects the top end and the bottom of the floating member 260, penetrating the floating member 260.

As shown in connection with fig. 5 and 8, the connection nozzle 264 communicates with a first end of the communication channel 2622, and the connection nozzle 264 is adapted to be connected to the ventilation hose 261. The inside passage penetrating the connecting nozzle 264 is provided in the connecting nozzle 264, one end of the inside passage of the connecting nozzle 264 is connected to one end of the communication passage 2622 located at the bottom of the main body 262, and the other end of the inside passage of the connecting nozzle 264 is connected to the ventilation hose 261. The inner passage of the connection nozzle 264 is connected to the communication passage 2622, and gas can flow from the top end of the float 260 into the air tube 261, and when the float 260 floats on the surface of the liquid, the above-liquid-level space can exchange gas with the other end of the air tube 261 through the float 260 and the air tube 261.

Referring to fig. 4, according to some embodiments of the present invention, the connection nozzle 264 of the float 260 communicates with the exhaust port 211 of the water tank 200 through a vent hose 261, one end of the vent hose 261 is connected with the connection nozzle 264, the other end is connected with the exhaust port 211, and a vent passage, an inner passage of the connection nozzle 264, and the vent hose 261 may form a gas flow passage. Thus, when liquid is injected into the water tank 200, gas above the liquid level in the water tank 200 can be discharged through the gas flow passage and the gas discharge port 211; when the water tank 200 discharges the liquid outwards, the gas outside the water tank 200 can enter the water tank 200 through the gas flow channel and the gas exhaust port 211, so that the internal and external gas pressures of the water tank 200 are balanced, and the probability of damaging the water tank 200 is reduced.

As shown in connection with fig. 5 and 9, according to some embodiments of the invention, the body portion 262 of the float 260 includes: float portion 2621 and counterweight portion 263. Wherein, the floating head 2621 has a hollow chamber 2623 therein, the floating head 2621 has a communication channel 2622, and the communication channel 2622 is spaced apart from the hollow chamber 2623. The inside of the float part 2621 may be provided with a symmetrical structure, one end of the communication channel 2622 is located at the top end of the float part 2621, the other end is located at the bottom of the float part 2621, the communication channel 2622 penetrates the float part 2621, the hollow chamber 2623 surrounds the communication channel 2622, and the hollow chamber 2623 and the communication channel 2622 are separated by the shell of the float part 2621, and the hollow chamber 2623 and the communication channel 2622 are not connected to each other and are not influenced each other. Hollow chamber 2623 may float member 260 to the surface of the liquid, for example, in some embodiments of the invention hollow chamber 2623 may be filled with a float, such as cotton; for another example, hollow chamber 2623 may be evacuated of air to form a vacuum. In this way, the average density of the floating member 260 can be reduced, and the floating member 260 can float on the surface of the liquid.

The balance 263 has a filling chamber 2632 therein, and the connecting nozzle 264 is provided in the balance 263, and the balance 263 is connected to the floating head 2621. The counterweight 263 is connected below the floating head 2621, and the internal passage of the connecting nozzle 264 communicates with the communication passage 2622 of the floating head 2621. Fill chamber 2632 may be filled with weights, which in some embodiments of the invention may be solid, such as lead, iron, etc.; of course, the counter weight may also be a fluid, such as lead sand, iron sand, etc. This can increase the weight and average density of the weight portion 263, and the center of gravity of the floating member 260 can be moved downward, and at the same time, because the average density of the floating head portion 2621 of the floating member 260 is small, and the average density of the weight portion 263 is large, the floating member 260 can maintain the posture in which the floating head portion 2621 is upward and the weight portion 263 is downward in the liquid. In some embodiments, the floating member 260 may be configured to be large and small, so that the center of gravity of the floating member 260 may be moved downward, thereby reducing the occurrence of rollover of the floating member 260.

According to some embodiments of the present invention, the floating head portion 2621 of the floating member 260 is provided with a connection portion 2624 on a side facing the counterweight portion 263, the counterweight portion 263 is provided with a mounting groove 2631 on a side facing the floating head portion 2621, and the connection portion 2624 is inserted into the mounting groove 2631 and is screwed with an inner wall of the mounting groove 2631. The connection portion 2624 is detachably connected to the mounting groove 2631, and when the floating member 260 needs to be adjusted or damaged components need to be replaced, the floating head portion 2621 and the counterweight portion 263 are conveniently detached for adjustment and replacement. It should be noted that, the connection manner of the connection portion 2624 and the mounting groove 2631 is not limited to the threaded connection, for example, in some embodiments of the present invention, the connection portion 2624 and the mounting groove 2631 may be connected by plugging or buckling.

Further, the outer side wall of the floating head portion 2621 facing the counterweight portion 263 is a plane, the connecting portion 2624 protrudes out of the plane, the floating head portion 2621 is disposed in the plane facing the outer side wall of the counterweight portion 263, and the contact plane can be improved when the floating head portion 2621 is connected to the counterweight portion 263. When the relative position of the floating head 2621 and the counterweight 263 reaches the connection requirement, the end of the mounting groove 2631 is abutted against the plane of the floating head 2621 facing the outer side wall of the counterweight 263, the floating head 2621 is tightly connected with the counterweight 263, so that air leakage is avoided, and liquid infiltration along the connection gap between the floating head 2621 and the counterweight 263 can be reduced. In this way, the probability of the float 260 being contaminated or liquid being retained within it can be reduced.

According to some embodiments of the invention, the seal between the surfaces where the floating head portion 2621 and the counterweight portion 263 are connected. To further improve the tightness of the connection of the floating head portion 2621 and the counterweight portion 263, a sealing member may be provided between the surfaces of the floating head portion 2621 and the counterweight portion 263, for example, in some embodiments of the present invention, the sealing member may be a sealing rubber ring. In this way, the gap between floating head 2621 and the seal, and between the seal and counterweight 220 can be reduced, thereby improving the sealing properties of floating member 260 and reducing the chance of leakage of the filler inside floating member 260 and penetration of external liquid into floating member 260.

According to some embodiments of the invention, the float head 2621 is provided with a pumping hole 2625, and the pumping hole 2625 communicates with the hollow chamber 2623. The pumping hole 2625 is used to pump out gas from the hollow chamber 2623 so that the hollow chamber 2623 can be in a vacuum state. For example, in some embodiments of the invention, prior to assembly of float member 260, a tool such as a vacuum pump may be used to evacuate the gas from hollow chamber 2623 and a plug may be used to seal the evacuation aperture 2625 so that hollow chamber 2623 may be maintained in a vacuum condition for float member 260.

According to some embodiments of the present invention, the cross-sectional area of the internal passage of the connection nozzle 264 is smaller than the cross-sectional area of the communication passage 2622, the cross-sectional area of the internal passage of the connection nozzle 264 is set smaller than the cross-sectional area of the communication passage 2622, and the diameter of the outer wall of the corresponding connection nozzle 264 may be set to a smaller value. In this way, the smaller diameter of the breather hose 261 connected to the connector 264 can be used, resulting in a simplified structure of the float 260. Meanwhile, the cross-sectional area of the communication passage 2622 is larger than that of the inner passage of the connection nozzle 264, a horn-like passage may be formed, and the flow rate of the gas may be accelerated when the above-liquid-level space discharges or sucks the gas through the float member 260.

Referring to fig. 6 and 7, according to some embodiments of the present invention, the second end of the communication channel 2622 is located on the outer wall surface of the main body portion 262, the outer wall surface of the main body portion 262 is provided with a communication groove 2626, the communication groove 2626 is concavely disposed from the outer wall surface of the main body portion 262 toward the inside of the housing, and the communication groove 2626 communicates with the second end of the communication channel 2622. In some embodiments of the present invention, the second end of the communication channel 2622 may be disposed at the top end of the float portion 2621. The communication groove 2626 communicates with the second end of the communication channel 2622 such that when the surface of the floating member 260 where the second end of the communication channel 2622 is provided is in contact with the inner wall of the liquid storage container, gas can flow through the communication groove 2626 to reduce the probability that the gas flow channel forms negative pressure to be adsorbed on the inner wall of the liquid storage container. The communication grooves 2626 are plural, and at least one of the communication grooves 2626 communicates with the communication passage 2622. For example, in some embodiments of the present invention, two communication grooves 2626 may be provided, the communication grooves 2626 may be symmetrically distributed on both sides thereof centering on the second end of the communication channel 2622, and both the communication grooves 2626 communicate with the second end of the communication channel 2622.

According to some embodiments of the invention, water tank 200 further comprises: a housing 210, a weight 220, and a coupler 230.

The tank 210 is provided with a water inlet 214, an air outlet 211, a water outlet 212 and a sewage outlet 213. It will be appreciated that the water filling port 214 may be used to fill the water tank with water, and the air may be exhausted through the air exhaust port 211, that is, the air exhaust port 211 may communicate the internal air pressure of the water tank 200 with the external air pressure, so that the internal air pressure of the water tank 200 may be balanced during the water filling and draining process of the water tank 200, and the tank 210 is prevented from being exploded or flattened. Drain 212 is used to drain the liquid from tank 200. Dirt and impurities in the tank 210 can be discharged through the drain 213, so that the water tank 200 can be cleaned conveniently. In some embodiments, a drain 213 may be provided at the bottom of the tank 210 to facilitate draining of dirt deposited at the bottom of the tank 210.

Referring to fig. 4, the float 260 has a vent hole above the liquid level in the tank, the vent hole of the float 260 communicates with the vent hole 211 through a vent hose 261, and the gas inside the tank 210 communicates with the outside of the tank 210 through the float 260. The float 260 communicates with the exhaust port 211 through the ventilation hose 261 to form a gas flow path. That is, the float 260 may float on the water surface, and the gas on the upper side of the water surface may flow into the float 260, and thus the gas flow may enter the ventilation hose 261 through the float 260 and be discharged through the ventilation hose 261 and the gas outlet 211.

When the volume of the liquid in the case 210 changes, air can circulate through the air flow channel, so that the air pressure inside and outside the case 210 is balanced, and the probability that the case 210 is flattened due to the internal air pressure being lower than the external air pressure or is exploded due to the internal air pressure being higher than the external air pressure is reduced.

Referring to fig. 9, when the water tank 200 is in the upright posture, the water line a is positioned as indicated by the dash-dot line in fig. 9, the floating member 260 floats on the water surface under the buoyancy force, the floating member 260 communicates with the space above the water surface, so that one end of the gas flow path formed by the floating member 260 and the ventilation hose 261 communicates with the gas outlet 211, and the other end of the gas flow path communicates with the space above the water surface in the tank 210. When water is injected into the water tank 200, the gas in the tank 210 may be discharged out of the tank 210 through the float 260; when the water tank 200 is drained, external air enters the water tank 200 through the air outlet 211 to supplement the reduced volume of air and liquid, so that the air pressure inside and outside the tank 210 can be kept balanced, reducing the probability of the tank 210 being damaged.

Referring to fig. 4, when the water tank 200 is in a horizontally placed posture, the water line a is positioned as indicated by a dotted line in fig. 4, the floating member 260 floats on the water surface under the buoyancy force, the floating member 260 communicates with the space above the water surface, so that one end of the gas flow path formed by the floating member 260 and the ventilation hose 261 communicates with the gas outlet 211, and the other end of the gas flow path communicates with the space above the water surface in the tank 210. When water is injected into the water tank 200, the gas in the tank 210 may be discharged out of the tank 210 through the float 260; when the water tank 200 is drained, external air enters the water tank 200 through the air outlet 211 to supplement the reduced volume of air and liquid, so that the air pressure inside and outside the tank 210 can be kept balanced, reducing the probability of the tank 210 being damaged.

Referring to fig. 4, the weight 220 is in communication with the drain port 212 through a water hose 221, and the weight 220 moves to the bottom of the tank 210 under the action of gravity, and water at the bottom of the tank 210 is suitably drained through the weight 220 and the water hose 221. The weight 220 communicates with the drain port 212 through the water hose 221, and the weight 220, the water hose 221 and the drain port 212 form a liquid flow path through which water flows out from the inside of the tank 210 when the tank 210 is supplied with water to the outside. The average density of the weight 220 is greater than that of the liquid stored in the tank 210, so that the weight 220 can be automatically transferred to the lowest position of the tank 210 under the action of gravity, and one end of the liquid flow channel is kept in contact with the liquid, so that the liquid can be conveniently discharged.

Referring to fig. 9, when the water tank 200 is in the upright posture, the weight 220 is sunk to the lowest position of the tank body 210 by gravity, one end of the liquid flow path is in contact with the lowest position of the tank body 210, and when the water tank 200 is discharged outward, water enters the liquid flow path through the weight 220 and finally is discharged from the water discharge port 212. After the water tank 200 is drained outward for a while, the water level in the water tank 200 is lowered, and since the weight 220 can be maintained at the lowest position of the tank body 210, the liquid passage can be maintained in contact with water during the draining process, so that the draining process can be continued.

Referring to fig. 4, the pipe joint 230 is detachably connected with the drain 213. The pipe joint 230 is used for plugging the drain 213 of the tank 210, when the water tank 200 stores liquid, the pipe joint 230 plugs the drain 213, and when the interior of the tank 210 is cleaned, dirt and water are deposited at the bottom of the inner cavity of the tank 210, and the dirt and water can be cleaned by disassembling the pipe joint 230. In some embodiments, the pipe joint 230 is not limited to one type of connection with the drain 213, and may be a threaded connection or a plug connection.

As shown in fig. 3 and 4 in combination, according to some embodiments of the present invention, the water tank 200 further includes a partition 240, the partition 240 is located in the tank 210, and the partition 240 divides the interior of the tank 210 into a first chamber 215 and a second chamber 216, a communication hole 241 is provided in the partition 240, the first chamber 215 and the second chamber 216 are communicated through the communication hole 241, a ventilation hose 261 and a floating member 260 are located in the first chamber 215, and a water hose 221 and a weight member 220 are located in the second chamber 216. The movement space of the air hose 261 and the floating member 260 in the case 210 can be maintained in the first chamber 215 by the partition 240, and the movement space of the water hose 221 and the weight member 220 can be maintained in the second chamber 216, so that the water hose 221 and the air hose 261 can be prevented from being entangled and knotted with each other when the posture of the case 210 is changed or the liquid in the case 210 flows, thereby reducing the probability of malfunction. Meanwhile, the partition 240 is provided with a communication hole 241, and liquid may flow in the first chamber 215 and the second chamber 216, reducing the interaction between the exhausting process and the draining process of the water tank 200.

Referring to fig. 4, according to some embodiments of the present invention, a partition 240 is fixedly connected or integrally formed with the case 210; or the partition 240 is detachably coupled with the case 210. For example, in some embodiments, the partition 240 is clamped to the inner wall of the case 210, a clamping groove is formed on one of the inner wall of the case 210 and the partition 240, a protrusion is formed on the other of the inner wall of the case 210 and the partition 240, the protrusion can be inserted into the clamping groove, the protrusion is tightly buckled with the clamping groove, and the partition 240 can be stably placed between the first cavity 215 and the second cavity 216.

Alternatively, the partition 240 may be connected to the inner wall of the case 210 by screws, and corresponding mounting holes may be formed in the partition 240 and the inner wall of the case 210 for screw connection. The partition 240 is detachably mounted inside the case 210, and when the inside of the case 210 is overhauled, the partition 240 can be detached, so that the overhauling and the maintenance are convenient.

In some embodiments of the present invention, one of the first buckling portion 2171 and the second buckling portion 2181 is a buckling groove, and the other is a protrusion adapted to be inserted into the buckling groove. The engagement groove formed in one of the first engagement portion 2171 and the second engagement portion 2181 may be engaged with the protrusion formed in the other of the first engagement portion 2171 and the second engagement portion 2181, thereby improving the sealing performance of the case 210.

According to some embodiments of the invention, the outer side wall of the housing 210 is provided with at least one mounting plate 2191. For example, in the example shown in fig. 1 and 3, the outer side wall of the case 210 may be provided with four mounting plates 2191, two of the mounting plates 2191 may be located at two adjacent corners of the case 210, the other two of the mounting plates 2191 may be disposed on opposite sides of the two adjacent corners, the vertical positions of the mounting plates 2191 may be staggeredly mounted on the outer side wall of the case 210, and the vertical positions of the mounting plates 2191 may be located near the positions where the first member 217 and the second member 218 are connected. In this way, the water tank 200 can be relatively stably installed at the corresponding installation position.

Further, a reinforcing rib 2192 is provided between the mounting plate 2191 and the outer surface of the case 210. Referring to fig. 1 and 2, the reinforcing ribs 2192 may be a triangular structure between the lower side of the mounting plate 2191 and the outer surface of the case 210, wherein the number of the reinforcing ribs 2192 may be determined according to the volume of the water tank 200 and the number of the mounting plate 2191. The reinforcing ribs 2192 may be used to support the mounting plate 2191, may enhance the strength of the mounting plate 2191, prevent the mounting plate 2191 from being distorted, and may increase the ability of the tank 200 to withstand the impact forces of liquid during movement.

As shown in connection with fig. 1 and 3, according to some embodiments of the present invention, at least one functional interface 2193 is provided on the tank 210, and the functional interface 2193 is used for exchanging water between the water tank 200 and other functional components of the cleaning machine. For example, in the example shown in fig. 1 and 3, two functional interfaces 2193 are provided on the case 210, one of the functional interfaces 2193 may be used for delivering water to the heating device, and the water flows back into the water tank 200 through the other functional interface 2193 after being heated by the heating device, so as to achieve the purpose of heating the water, and the heated water may improve the cleaning effect.

According to some embodiments of the present invention, the tank 210 is further provided with a water filling port 214, and the water filling port 214 is used for filling water into the tank 210 when the water level in the tank 200 is lower than the minimum required level for the first time, and the diameter of the water filling port 214 can be set larger, so that the water filling speed can be increased, and the water level in the tank 200 can be conveniently observed. The water filling port 214 is provided with a sealing cover 250, the sealing cover 250 is detachably connected with the tank 210 to seal or open the water filling port 214, and the sealing cover 250 and the water filling port 214 can be in threaded connection, which means that the sealing cover 250 can be opened when the water tank 200 is not in operation.

According to some embodiments of the invention, the water-gas separation device 100 comprises: the air conditioner includes a housing 110, a partition 120, an introduction pipe 130, a drain pipe 140, an exhaust pipe 150, and a weight 160. Specifically, referring to fig. 11, a partition 120 is provided in the housing 110, and the partition 120 partitions an inner space of the housing 110 into a first space 121 and a second space 122 that are ventilated with each other. After the fluid mixture enters the interior of the housing 110, liquid may enter the first space 121 and gas may enter the second space 122 through the first space 121.

Referring to fig. 10, the introduction pipe 130 is connected to the housing 110, and the introduction pipe 130 communicates with the first space 121. Here, the introduction pipe 130 may guide the mixture mixed with the gas and the cleaning liquid into the inside of the housing 110. Whereby the mixture can be made to flow directionally. The exhaust pipe 150 is connected to the housing 110, that is, the housing 110 may serve as a mounting and supporting structure of the exhaust pipe 150. The exhaust pipe 150 communicates with the second space 122, and the separated gas may flow out of the second space 122 through the exhaust pipe 150 after entering the second space 122.

Referring to fig. 10 and 11, the drain pipe 140 is connected to the housing 110, the weight 160 communicates with the drain pipe 140 through the water hose 161, both the weight 160 and the water hose 161 are located in the first space 121, the first space 121 communicates with the drain pipe 140 through the weight 160 and the water hose 161, the weight 160 moves to the bottom of the first space 121 under the action of gravity, and the liquid at the bottom of the first space 121 is discharged through the weight 160, the water hose 161, and the drain pipe 140.

It should be noted that, when the cleaning robot 010 is at different working positions, the cleaning robot 010 may have different postures, and correspondingly, the lowest point of the housing 110 is different, and the liquid in the housing 110 flows to the lowest point under the action of gravity. The weight 160 will also move to the bottom of the housing 110 under the action of gravity, so that the liquid can be discharged from the housing 110 through the weight 160 and the water hose 161. In this way, by providing the weight 160 and the water hose 161, the liquid in the housing 110 can be conveniently discharged.

The water-gas separation device 100 according to the embodiment of the present invention is described below in conjunction with a flow process of a fluid mixture:

the fluid mixture enters the shell 110 through the inlet pipe 130, the liquid flows into the first space 121 under the action of gravity due to the difference of the gravity of the gas and the liquid, and the gas enters the second space 122, so that the purpose of water-gas separation is achieved. Then, the gas introduced into the second space 122 is exhausted through the exhaust pipe 150, and the liquid can be discharged through the weight 160, the water hose 161, and the drain pipe 140.

Therefore, by disposing the partition 120 in the housing 110, the internal space of the housing 110 can be divided into the first space 121 and the second space 122, so that after the fluid mixture enters the housing 110 through the inlet pipe 130, the outlet end of the inlet pipe 130 is separated from the air inlet end of the air outlet pipe 150 due to the arrangement of the partition 120, and the travelling distance of the fluid mixture in the housing 110 is prolonged, so that the fluid mixture can be easily separated from water and air under the action of gravity, thereby facilitating recycling of the cleaning liquid.

According to some embodiments of the present invention, as shown in connection with fig. 11 and 12, the separator 120 includes a first plate 123 and a second plate 124 configured to be disposed to intersect. The mutually-configurable structures of the first plates 123 and the second plates 124 include, for example, an L-shaped structure formed by the first plates 123 and the second plates 124 in fig. 11, a structure formed by forming an included angle between the first plates 123 and the second plates 124 as other angles, and two first plates 123 are respectively mounted at front and rear ends of the second plates 124 to form a U-shaped structure or the like. The ingress pipe 130 is located at one side of the first plate 123, the exhaust pipe 150 is located at the other side of the exhaust pipe 150, and the second plate 124 is provided with a hollowed-out portion 125. For example, one end of the first plate 123 is connected to one end of the second plate 124, and the first plate 123 is perpendicular to the second plate 124.

Here, the first plate 123 may separate the liquid passage and the gas passage, preventing the liquid and the gas from being mixed again, resulting in separation failure. In addition, through setting up fretwork portion 125 on second plate 124, gas can flow to second space 122 through fretwork portion 125, can promote water-gas separation efficiency from this. In addition, the weight 160 is positioned at one side of the second plate 124, and the exhaust pipe 150 is positioned at the other side of the second plate 124, so that the second plate 124 can define the weight 160 and the water hose 161 in the first space 121, preventing the weight 160 from entering the second space 122.

According to some embodiments of the present invention, referring to fig. 12, the spacer 120 further includes a reinforcing plate 126, and the reinforcing plate 126 is connected between the first plate body 123 and the second plate body 124. The reinforcement plate 126 may enhance the connection strength between the first plate body 123 and the second plate body 124. In some embodiments, the stiffening plate 126 may be a plurality of spaced apart, for example, the stiffening plate 126 may be two or three.

It should be noted that, due to the change of the water level in the first space 121 or the change of the working posture of the cleaning robot 010, the weight 160 may strike the partition 120, and in order to further strengthen the structural strength of the partition 120, according to some embodiments of the present invention, as shown in fig. 12, a plurality of reinforcing ribs 127 may be disposed on the partition 120 in a staggered manner, so that the stability of the overall structure may be improved.

According to some embodiments of the present invention, referring to fig. 11 and 12, the first plate 123 is an arc plate, and the arc plate surrounds the inlet pipe 130 or the outer periphery of the exhaust pipe 150. When the fluid mixture enters the inner cavity of the housing 110 under negative pressure, the flow speed is high, and splashing can be caused, so that the flow speed of the fluid mixture can be effectively reduced by encircling the arc-shaped plate around the ingress pipe 130 or the exhaust pipe 150 in order to prevent the condition, and the splashing of the liquid is prevented from directly entering the exhaust pipe 150. In addition, the structure of the curved plate surrounding the introduction pipe 130 plays a role in guiding the flow direction of the fluid mixture, and guides the fluid mixture into the first space 121.

According to some embodiments of the present invention, referring to fig. 11 and 12, the first plate 123 is an arc plate, and the arc plate surrounds the periphery of the air duct. When the fluid mixture enters the inner cavity of the shell 110 under negative pressure, the flow speed is high, splashing can be caused, the first plate 123 with the arc-shaped structure can effectively prevent liquid from splashing, and the flow speed of the fluid mixture is reduced; in addition, the first plate 123 of the arc structure has a guiding function for the flow direction of the fluid mixture, and guides the fluid mixture into the first space 121.

According to some embodiments of the present invention, a vent gap may be maintained between at least one of the left and right sides of the first plate 123 and the inner wall of the housing 110, through which the first space 121 and the second space 122 may be communicated, so that when the water-gas separation device 100 is in a horizontal state and water in the first space 121 passes through the hollowed-out portion 125, ventilation may be performed through the vent gap of the side portion of the first plate 123, so as to ensure reliability of water-gas separation.

According to some embodiments of the present invention, as shown in fig. 11 and 12, the partition 120 is provided with a first clamping portion 128, and the inner wall of the housing 110 is provided with a second clamping portion 111 clamped with the first clamping portion 128. The partition 120 and the housing 110 form a clamping connection, so that the partition 120 is stably fixed in the inner cavity of the housing 110, and the overall firmness of the device is improved.

According to some embodiments of the present invention, as shown in fig. 10, the introduction pipes 130 may be plural, and each introduction pipe 130 communicates with the first space 121. Thus, the fluid mixture can enter the first space 121 in the housing 110 from the plurality of introduction pipes 130, and the water-gas separation throughput can be improved. According to some embodiments of the present invention, referring to fig. 10, both the inlet pipe 130 and the outlet pipe 150 are located on the same side wall of the housing 110. Thereby improving the structural rationality of the water-gas separation device 100.

Referring to fig. 10, the air pressure balancing port 180 is located between two adjacent introduction pipes 130, and when water is rapidly recovered in the water tank 200, air in the water tank 200 enters the water-gas separation device 100 and then can be discharged through the exhaust pipe 150 after passing through the hollow portion 125, so as to accelerate the gas discharge speed in the water tank 200. Meanwhile, if water is contained in the water tank 200, overflowed water may flow into the water-gas separation device 100 from the air pressure balancing port 180, and overflowed water may flow into the first space 121, avoiding the overflowed water from mixing with the gas of the second space 122.

Further, referring to fig. 11, in combination with the structure of the L-shaped partition 120, and the introduction pipe 130 and the exhaust pipe 150 are located on the same side wall of the housing 110, the movement distance of the fluid mixture in the housing 110 can be prolonged, and the movement time of the fluid mixture in the housing 110 can be prolonged, which is beneficial to water-gas separation.

According to some embodiments of the present invention, the water-gas separation device 100 further includes a water-gas separation blower, and an air inlet end of the water-gas separation blower is communicated with the air outlet. The inner space of the shell 110 is a closed space, and when the water-gas separator sucks, gas in the shell 110 is continuously discharged from the exhaust port, so that negative pressure is formed in the inner space of the shell 110, and under the action of atmospheric pressure, a fluid mixture continuously enters the shell 110 to perform water-gas separation, and the water-gas separation efficiency is improved.

It should be noted that the configuration of the water-gas separation device 100 is not limited thereto, and other embodiments according to the present invention may also be configured such that, for example, referring to fig. 13 to 17, the water-gas separation device 100' includes a housing 110', a partition 120', a wind driving part 130', an introduction pipe 140', a drain pipe 150', and an exhaust pipe 160'.

Referring to fig. 14 and 16, a partition 120' is provided in the housing 110', the partition 120' partitions an inner space of the housing 110' into a first space 121' and a second space 122', and the partition 120' is provided with an opening through which the first space 121' communicates with the second space 122'. The fluid mixture enters the first space 121 'after entering the housing 110', and flows to the second space 122 'through the opening of the first space 121'. In some examples, the wind driven component 130' may be a centrifugal fan or a waterproof axial flow fan. Referring to fig. 17, the wind driving part 130' includes a motor 132' and a centrifugal impeller 131', wherein the centrifugal impeller 131' is connected to the motor 132', and the motor 132' can drive the centrifugal impeller 131' to rotate when being energized.

Referring to fig. 16 and 17, a wind driving part 130 'is positioned in the first space 121' to drive the fluid mixture in the first space 121 'to flow to the second space 122' through the open port. In operation of the wind driven component 130', the fluid mixture in the first space 121' can be centrifugally accelerated to flow into the second space 122', and after the fluid mixture in the first space 121' flows into the second space 122', a suction negative pressure is generated in the first space 121', so that the liquid generated during the cleaning process outside the housing 110 'can be cyclically sucked into the first space 121'.

The housing 110 'is provided with an inlet 141', a drain 151', and an exhaust port 161', wherein the inlet 140 'communicates with the inlet 141', the drain 150 'communicates with the drain 151', and the exhaust pipe 160 'communicates with the exhaust port 161'. Further, the inlet 141 'communicates with the first space 121' for the fluid mixture to enter the first space 121 'from outside the housing 110'. The water outlet 151' and the air outlet 161' are both communicated with the second space 122', and the air outlet 161' is positioned above the water outlet 151', the water outlet 151' is used for discharging liquid deposited at the bottom of the second space 122' in the fluid mixture, and the air outlet 161' is used for discharging air positioned above the liquid in the second space 122 '. One end of the introduction pipe 140' is connected to the housing 110' (more specifically, the introduction pipe 140' is connected to the introduction port 141 '), and the introduction pipe 140' is communicated with the first space 121', and the other end of the introduction pipe 140' extends to the water outlet area of the cleaning robot to suck the cleaning liquid generated in the water outlet area of the cleaning robot during the cleaning process to the first space 121' through the introduction pipe 140 '. The drain pipe 150' is connected to the housing 110' (more specifically, the drain pipe 150' is connected to the drain port 151 '), and the drain port 151' is communicated with the water accumulation tank 170' of the second space 122', for draining the liquid of the water accumulation tank 170' in the second space 122 '. The exhaust pipe 160' is connected to the housing 110' (further specifically, the exhaust pipe 160' is connected to the exhaust port 161 '), and the exhaust port 161' communicates with the second space 122' for exhausting the separated gas in the second space 122 '.

The water-gas separation device 100' according to an embodiment of the present invention is described below in connection with a flow process of a fluid mixture:

the fluid mixture enters the inside of the housing 110' through the introduction pipe 140' and then flows from the introduction port 141' to the wind driving part 130' located in the first space 121' by the partition 120', and the fluid mixture is accelerated from the open port of the first space 121' to the second space 122' by the wind driving part 130' to obtain centrifugal force. Under the action of gravity, the liquid and gas in the fluid mixture are separated, the liquid portion of the fluid mixture remains in the water accumulation tank 170 'in the second space 122', the drain pipe 150 'communicating with the water accumulation tank 170' can drain the liquid, and the gas portion of the fluid mixture in the second space 122 'can drain through the gas outlet 161'.

Therefore, the partition 120' is disposed in the housing 110' to partition the interior space of the housing 110' into the first space 121' and the second space 122', so that the fluid mixture can be separated from water and gas under the action of gravity after entering the interior of the housing 110' through the inlet pipe 140', so that the liquid is deposited on the housing 110', and the gas is discharged from the housing 110', thereby facilitating the recovery and reuse of the cleaning liquid.

According to some embodiments of the present invention, as shown in connection with fig. 14 to 16, the partition 120' includes a communicating pipe body 123' and a mounting pipe body 124'. Wherein, communicating pipe body 123 'is connected and communicates with ingress pipe 140', and installation body 124 'is connected and communicates with communicating pipe body 123', and wind drive part 130 'is installed in installation body 124', is equipped with uncovered opening on the installation body 124', and the air-out end and the uncovered opening of wind drive part 130' link the air inlet end and communicating pipe body 123 'of ventilation drive part 130'.

Here, the communicating pipe body 123 'may separate the fluid mixture introduced from the introduction port 141' from the gas separated from the second space 122 'in the housing 110', preventing the liquid from being mixed again after the separation of the gas, resulting in separation failure. In addition, the wind driving part 130' is installed in the installation tube body 124', and the fluid mixture enters the air inlet end of the wind driving part 130' after entering the installation tube body 124' from the communication tube body 123', and then flows out from the air outlet end of the wind driving part 130' in an accelerated manner under the centrifugal action, and flows to the water accumulation tank 170' from the open mouth opposite to the air outlet end.

According to some embodiments of the present invention, as shown in fig. 15, the outer surface of the mounting tube 124 'is provided with at least one first water deflector 125', and the first water deflector 125 'is disposed at the open mouth to guide the fluid mixture discharged from the open mouth into the second space 122' for liquid deposition. The flow rate of the fluid mixture is increased by the wind driving part 130', and the first water blocking member 125' inclined toward the bottom of the water accumulation tank 170' is provided at the opening to guide the liquid into the second space 122 for liquid deposition.

According to some embodiments of the present invention, as shown in fig. 15 and 16, the outer peripheral wall of the communicating pipe 123 'and/or the inner wall of the casing 110' have a plurality of side baffles 127', and the plurality of side baffles 127' are distributed on the path of the fluid flowing from the second space 122 'toward the exhaust port 161' so as to slow down the fluid discharging speed. The fluid mixture is accelerated in flow rate by the wind driving part 130', and after entering the water accumulation groove 170' from the open port, the fluid mixture encounters the bottom or the liquid surface of the water accumulation groove 170' to generate liquid splashing. The side baffle 127 'is disposed on the outer peripheral wall of the communicating pipe 123' to prevent splashed liquid from directly entering the exhaust pipe 160', so as to play a role of shielding, and to slow down the flow rate of the fluid discharged to the outside of the casing 110', thereby facilitating further separation of the liquid and the gas. The side baffle 127 'may be disposed only on the outer periphery of the connection pipe 123' or only on the outer periphery of the housing 110', so as to prevent the splash liquid from being discharged to the exhaust pipe 160'.

According to some embodiments of the present invention, a portion of the outer surface of the partition 120 'defines a first guide slope 128', the first guide slope 128 'being inclined toward the water accumulation groove 170'. After the splashed liquid is blocked by the side baffle 127', the splashed liquid flows towards the water accumulation tank 170' along the first guide inclined plane 128' under the action of gravity, so that the liquid is recovered and discharged. Referring to fig. 13 and 16, a small portion of the exhaust pipe 160 'is located in the housing 110', so that the exhaust pipe 160 'is stably and reliably fixed on the water-gas separation device 100', and the overall structural stability of the device is improved.

According to some embodiments of the present invention, referring to fig. 15 and 16, a water accumulation groove 170 'is provided in the second space 122', and the exhaust port 161 'is provided at an upper side of the water accumulation groove 170'. The drain pipe 150 'is provided at a side wall or a bottom wall of the water accumulation tank 170'. The water accumulation tank 170' buffers the fluid mixture flowing into the second space 122', lengthens the time for which the fluid mixture is left in the second space 122', prevents the fluid mixture from being discharged through the drain pipe 150' after the fluid mixture is not completely separated from water and gas, and the gas discharge port 161' is provided at an upper side of the water accumulation tank 170', and the separated gas portion of the fluid mixture moves upward to be discharged from the gas discharge pipe 160 '.

According to some embodiments of the present invention, a second guiding inclined surface 129' is further disposed in the second space 122', and the second guiding inclined surface 129' is disposed obliquely from the air outlet 161' toward the water accumulation groove 170 '. The splashed liquid is blocked by the side plate 127 'provided on the inner wall of the housing 110', and then guided to the water accumulation groove 170 'along the second guide slope 129'.

According to some embodiments of the present invention, at least one second water baffle 126' is disposed at the edge of the second guide slope 129', the second water baffle 126' is located above the water accumulation groove 170', and the second water baffle 126' is inclined toward the water accumulation groove 170' so that the liquid of the second guide slope 129' flows from the second water baffle 126' to the bottom of the water accumulation groove 170' more easily. The second water deflector 126' has the same function as the first water deflector 125' to prevent liquid from splashing so that liquid is deposited in the sump 170 '.

According to some embodiments of the invention, the water-gas separation device 100' further comprises: and a weight member. Wherein, the weight member is communicated with the drain outlet 151 'of the drain pipe 150' through the water-through hose, the weight member and the water-through hose are both positioned in the water accumulation groove 170 'in the second space 122', the water accumulation groove 170 'is communicated with the drain pipe 150' through the weight member and the water-through hose, the weight member moves to the bottom of the water accumulation groove 170 'under the action of gravity, and the water at the bottom of the water accumulation groove 170' is suitable for being discharged through the weight member, the water-through hose and the drain pipe.

According to some embodiments of the present invention, referring to fig. 13, the introduction pipes 140' are plural, and each introduction pipe 140' communicates with the first space 121 '. In this way, the fluid mixture can enter the first space 121' in the housing 110' from the plurality of introduction pipes 140', improving the throughput of the water-gas separation. According to some embodiments of the present invention, referring to fig. 16, the inlet pipe 140 'and the outlet pipe 160' are positioned on different side walls of the housing 110', which lengthens the distance between the water accumulation tank 170' and the outlet pipe 160', makes the splashed liquid difficult to splash out of the outlet pipe 160', and lengthens the moving distance of the fluid mixture in the housing 110 'and the moving time of the fluid mixture in the interior of the housing 110', which is beneficial for water-gas separation.

The embodiment of the invention also provides a cleaning robot 010 which comprises the water circulation system. Wherein the water circulation system comprises at least one of the water-gas separation device 100 and the water-gas separation device 100'. For example, in the embodiment shown in fig. 18, the water-gas separation device 100 and the water tank 200 are mounted on the chassis 011 of the cleaning robot 010, and after the fluid mixture passes through the water-gas separation device 100, the separated liquid may be stored in the water tank 200 and reused by the cleaning robot 010 for cleaning.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The water circulation system is characterized by comprising a water supply system and a sewage recovery system, wherein the water circulation system comprises a water supply loop and a sewage loop, and the sewage loop is used for recovering and filtering sewage and then inputting the filtered sewage into the water supply loop;

The water supply system comprises a water tank, an exhaust port is arranged on the water tank, a floating piece is arranged in the water tank and is communicated with the exhaust port through a ventilation hose, air in the water tank is communicated with the outside of the water tank through the floating piece, the floating piece comprises a main body part and a connecting nozzle, a communication channel penetrating through the main body part is arranged on the main body part, a first end of the communication channel is positioned at the bottom of the main body part or at the side part near the bottom of the main body part, a second end of the communication channel is positioned at the top end of the main body part or at the side part near the top end of the main body part, the connecting nozzle is communicated with the first end of the communication channel, and the connecting nozzle is suitable for being connected with the ventilation hose;

the sewage loop comprises a water-gas separation device, wherein the water-gas separation device is provided with an air pressure balance interface which is used for balancing air pressure in the water-gas separation device, and liquid separated by the water-gas separation device is filtered and then returned into the water tank;

the air pressure balance interface is connected to the air outlet through a hose and is communicated with the inside of the water tank.

2. The water circulation system of claim 1, wherein the water tank further comprises:

the pipe joint is detachably connected with the sewage outlet.

3. The water circulation system of claim 2, wherein the water tank further comprises:

4. The water circulation system of claim 1, wherein the water-gas separation device comprises:

a housing;

the drain pipe is connected with the shell;

5. The water circulation system according to claim 4, wherein the partition member includes a first plate body and a second plate body which are disposed to intersect, the introduction pipe is located at one side of the first plate body, the exhaust pipe is located at the other side of the exhaust pipe, and the second plate body is provided with a hollowed-out portion.

6. The water circulation system of claim 4, further comprising a water-air separation blower, an air inlet end of the water-air separation blower being in communication with the air outlet.

7. The water circulation system of claim 1, wherein the water-gas separation device comprises:

a housing provided with an inlet, a drain, and an exhaust;

wherein:

8. The water circulation system of claim 7, wherein the partition comprises:

The installation pipe body, the installation pipe body with communicating pipe body coupling and intercommunication, wind drive part install in the installation pipe body, be equipped with uncovered opening on the installation pipe body, wind drive part's air-out end with uncovered opening intercommunication, wind drive part's air inlet end with communicating pipe body intercommunication.

9. A cleaning robot comprising a water circulation system according to any one of claims 1-8.