Water supply circulating structure of glass curtain wall cleaning robot

Abstract

The utility model provides a kind of water supply circulation structure of glass curtain wall cleaning robot belongs to water supply circulation structure technical field, the water supply circulation structure of this glass curtain wall cleaning robot, wherein: the cleaning robot includes sequentially connected base, drive arm and acting end, drive arm one end is connected to base, and the other end is connected to acting end, base is provided with gyro wheel;Sewage tank is provided in base interior, primary water filtration system is provided in sewage tank middle upper portion, primary water filtration system includes filter layer and support frame, filter layer is horizontally fixed in sewage tank middle upper portion by support frame, filter layer edge and sewage tank inner wall closely adhere, filtered sewage reaches the standard of secondary use, the support frame of primary water filtration system is annular structure, support frame outer periphery and sewage tank inner wall are welded fixed, solve the problem that glass curtain wall cleaning robot is frequently watered due to clear water disposable exhaustion and leads to operation interruption, low efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of water supply circulation structure, specifically, it relates to a water supply circulation structure for a glass curtain wall cleaning robot. Background Technology

[0002] The subway's shielded glass curtain wall, arranged in a narrow strip along the platform edge, is a crucial barrier ensuring passenger safety and train visibility. The piston wind generated by the high-frequency reciprocating trains continuously stirs up metal dust, brake shavings, and oil mist from within the tunnel. These small, hard particles quickly form a dense haze on the glass surface, significantly reducing transparency and impairing the driver's visibility. Unlike curtain walls on high-rise buildings, the subway environment, due to its enclosed underground space and high humidity, allows metal particles to easily mix with condensation to form a highly adhesive oily film. Conventional manual cleaning requires utilizing nighttime "maintenance windows" to erect temporary barriers, move buckets and scrapers, and workers must cross platform gaps and approach the track area, posing multiple risks of falls, electric shock, and unexpected train movement. This process is labor-intensive, inefficient, and allows for less than two hours of work time per session.

[0003] In recent years, some manufacturers have attempted to adapt building glass cleaning robots for subway scenarios. However, existing equipment is generally designed for high-altitude suspension or rooftop tracks: the robots are heavy and have a high center of gravity, requiring attachment via roof cantilever or vacuum suction cups. Underground platforms lack the conditions for hoisting, and the dense overhead pipelines make it impossible to suspend them on guide rails. If suction is used, the gap between the shielding glass and the train is only a few tens of centimeters, limiting the reach of the robotic arm, and the suction base is prone to interference with the platform door threshold. More importantly, existing robots generally use an open-loop water supply mode of spraying once, directly recycling, and then discarding the wastewater. The clean water tank has a limited capacity, and the level drops rapidly as spraying continues. The recycled wastewater contains sharp metal particles, which, if pumped repeatedly without treatment, can easily clog nozzles, scratch the glass, and leave streaks. Therefore, the wastewater can only be temporarily stored and then the entire tank discarded. As a result, the robot had to return to the water replenishment station at the starting point before the water ran out. This round trip not only disrupted the cleaning cycle but also required manual assistance to move the water pipes and tanks due to the limited space at the platform end, increasing the frequency of secondary track placement. This significantly reduced the overall operation time, making it difficult to complete long-distance continuous cleaning within the limited "window". In addition, frequent water replenishment meant carrying additional large-capacity water tanks, hose reels, and power cables, further increasing the overall weight and power consumption. This placed higher demands on the platform floor's load-bearing capacity, battery life, and anti-slip performance of the running wheels, significantly increasing manufacturing and maintenance costs. Utility Model Content

[0004] In view of this, the present invention provides a water supply circulation structure for a glass curtain wall cleaning robot, which solves the problem of frequent water replenishment required when the clean water of the glass curtain wall cleaning robot is exhausted at once, resulting in work interruption and low efficiency.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a water supply circulation structure for a glass curtain wall cleaning robot, wherein: the cleaning robot includes a base, a drive arm, and an operating end connected in sequence, one end of the drive arm is connected to the base, and the other end is connected to the operating end, and the base is provided with rollers; a sewage tank is provided inside the base, and a primary water filtration system is provided in the upper part of the sewage tank, the primary water filtration system includes a filter layer and a support frame, the filter layer is horizontally fixed to the upper part of the sewage tank by the support frame, the edge of the filter layer is tightly attached to the inner wall of the sewage tank, and the filtered sewage meets the standard for secondary use.

[0007] The technical advantages of the water supply circulation structure of the glass curtain wall cleaning robot provided by this utility model are as follows: By embedding a primary water filtration system in the upper part of the sewage tank, the recovered sewage can be coarsely separated in the tank and flow downward into the clean water chamber, realizing a closed loop of "recovery-filtration-resupply". The robot does not need to interrupt its operation due to water quality problems, which significantly extends the single continuous cleaning time. At the same time, it maintains a low center of gravity and compact structure, and the roller base can still move flexibly.

[0008] Based on the above technical solution, the water supply circulation structure of the glass curtain wall cleaning robot of this utility model can be further improved as follows:

[0009] The primary water filtration system has a ring-shaped support frame. The outer periphery of the support frame is welded and fixed to the inner wall of the sewage tank. The inner periphery of the support frame is provided with a groove, and the edge of the filter layer is embedded in the groove to form a detachable connection.

[0010] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the ring support frame is welded to the box wall to form an integrated support, and the filter layer edge can be positioned by embedding the groove. This ensures that the filter plane is always horizontal and prevents bypass short circuits. It can also be lifted up and removed during maintenance, eliminating the need for tools to complete cleaning or replacement and simplifying on-site operations.

[0011] Furthermore, the filter layer includes a coarse filter screen and a fine filter membrane stacked sequentially from top to bottom. The mesh size of the coarse filter screen is larger than that of the fine filter membrane, and the edges of the coarse filter screen and the fine filter membrane are embedded together in the groove of the support frame.

[0012] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the coarse filter screen first intercepts large particles, and the fine filter membrane then intercepts fine dust stains. The stacking sequence makes the membrane surface less prone to clogging. The two stages are embedded in the same groove, resulting in a highly compact structure. Both stages of filter media can be replaced in a single step, further improving maintenance efficiency.

[0013] Furthermore, the wastewater tank is equipped with a clear water chamber located below the primary water filtration system. The clear water chamber is used to collect water filtered by the primary water filtration system. The side wall of the clear water chamber is equipped with a water outlet, which is connected to the spray device at the action end through a pipeline.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the filtered water falls directly into the lower clear water chamber, the water outlet is arranged near the side wall, shortening the pump suction path and reducing energy consumption. The robot can draw clean water and spray it repeatedly at any time during its movement, ensuring that the rollers can move continuously without watermarks remaining on the cleaning surface.

[0015] Furthermore, the top of the sewage tank is provided with an openable cover, and a clamping ring is provided on the lower surface of the cover. The clamping ring presses against the upper surface of the primary water filtration system when the cover is closed.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: after the box cover is closed, the clamping ring presses down against the edge of the filter layer to form an end face seal, which not only prevents sewage from flowing around, but also absorbs frame vibration, avoids the filter layer from being misaligned or warped during movement, and improves system reliability.

[0017] Furthermore, a sewage inlet is provided on the upper side wall of the sewage tank. The sewage inlet is located above the primary water filtration system. The sewage inlet is connected to the suction port at the working end through a pipeline. The suction port is used to collect the sewage generated during the cleaning process and introduce it into the sewage tank.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the sewage inlet is higher than the filter surface, and the gravity difference makes the recycled water flow evenly spread on the filter layer surface, thereby improving the utilization rate of the filter area; the water suction device is directly connected to the inlet pipe, realizing "washing and collecting at the same time", and the working surface is always kept in a low water state, reducing secondary splashing.

[0019] Furthermore, a guide plate is provided below the primary water filtration system. The guide plate is inclined, with its high end connected to the side wall of the sewage tank and its low end pointing to the bottom of the clear water chamber.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the inclined guide plate directs the water after primary filtration to the bottom of the clear water chamber, avoiding the water flow from directly impacting the liquid surface and generating bubbles and vortices, maintaining a stable water flow near the outlet inlet, and extending the pump body's life.

[0021] Furthermore, a handle is provided on the upper surface of the support frame. The handle has an arc-shaped structure, and both ends of the handle are hinged to the support frame.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the arc-shaped handle is hinged to the support frame and can be flipped upward to form a grip. Maintenance personnel can lift the frame and filter layer out of the sewage tank with one hand. The operating space requirement is small, making it suitable for use in high-altitude suspended baskets or narrow roof environments.

[0023] Furthermore, the bottom of the sewage tank is provided with a sewage outlet, and the sewage outlet is provided with a sealing plug, which is threadedly connected to the sewage outlet.

[0024] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the bottom drain port is threaded with the sealing plug, and when the bottom of the tank is sludge after long-term operation, the plug can be unscrewed to discharge the sludge directly without turning the whole machine over. The maintenance process is quick and will not pollute the filtered water.

[0025] Furthermore, a maintenance hatch is provided on the upper surface of the base, the position of which corresponds to the position of the sewage tank. One side of the maintenance hatch is hinged to the base, and the other side is fixed to the base by a latch.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the maintenance hatch corresponding to the sewage tank is set on the top surface of the base. It can be opened horizontally by simply unlocking the latch. The primary water filtration system, the clear water chamber and the sewage outlet are all exposed in the same open field of vision. The three operations of inspection, filter element removal and discharge can be completed in a single opening, which significantly shortens the downtime for maintenance.

[0027] Compared with existing technologies, the beneficial effects of the water supply circulation structure of the glass curtain wall cleaning robot provided by this utility model are as follows: This utility model embeds a primary water filtration system in the upper middle part of the sewage tank, so that recycling, filtration and secondary water supply are completed in the same cavity, fundamentally changing the discontinuous operation caused by the traditional open-loop mode. After the sewage enters the tank through the suction port, it is first guided to the upper surface of the filter layer, where gravity flow completes the interception of coarse particles and the retention of fine dust stains. The clean water then sinks to the lower clear water cavity, forming a continuously usable secondary water source. When the pump is pumped again, the clear water has met the spraying cleanliness requirements, and there is no need to return to the ground to replenish water. The robot can walk continuously along the facade, achieving uninterrupted cleaning across sections. Since the filtration system is integrated inside the sewage tank, it does not occupy additional base or arm space, the center of gravity of the whole machine remains low, and the roller adsorption and walking stability are not affected. At the same time, the filter layer and the support frame adopt a liftable structure, and maintenance personnel only need to open the base maintenance hatch to remove and rinse the whole machine without disassembling the pipeline or moving the tank, which significantly shortens the high-altitude maintenance time. When the tank lid is closed, the clamping ring applies an end-face seal to the edge of the filter layer, preventing sewage from flowing around and ensuring filtration efficiency. The inclined guide plate smoothly directs the pre-filtered water flow to the bottom of the clear water chamber, avoiding surface disturbance that could cause air bubbles to be sucked in, thus extending the pump's lifespan. The bottom drain outlet can quickly discharge sediment during work breaks, preventing siltation from occupying effective volume. Through this closed-loop cycle, the robot transforms what would otherwise be a one-time waste of clean water into a reusable resource, significantly extending the single-operation time with the same tank volume, reducing the number of refills, and minimizing manual intervention and equipment wear. This results in efficient, safe, and economical facade cleaning with a simple, lightweight structure. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 An example diagram of the water supply circulation structure of a glass curtain wall cleaning robot;

[0030] Figure 2 A side view of the water supply circulation structure of a glass curtain wall cleaning robot;

[0031] Figure 3 A perspective view of the base of a water supply circulation structure for a glass curtain wall cleaning robot;

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 10. Base; 11. Rollers; 12. Wastewater tank; 121. Primary water filtration system; 13. Clear water chamber; 20. Drive arm; 30. Actuating end. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figures 1-3 The diagram shown is an example of the water supply circulation structure of a glass curtain wall cleaning robot provided by this utility model: The cleaning robot includes a base 10, a drive arm 20, and an action end 30 connected in sequence. One end of the drive arm 20 is connected to the base 10, and the other end is connected to the action end 30. The base 10 is provided with rollers 11. A sewage tank 12 is provided inside the base 10. A primary water filtration system 121 is provided in the upper part of the sewage tank 12. The primary water filtration system 121 includes a filter layer and a support frame. The filter layer is horizontally fixed to the upper part of the sewage tank 12 through the support frame. The edge of the filter layer is tightly attached to the inner wall of the sewage tank 12. The filtered sewage meets the standard for secondary use.

[0036] The glass curtain wall cleaning robot is placed at the bottom of the facade to be cleaned, with its rollers against the wall and the walking system activated. As the robot moves forward, its actuating end sprays water onto the wall to wet and scrub it. The resulting wastewater flows down the wall and is immediately sucked in by the suction port at the lower edge of the actuating end. It is then transported through pipelines to the wastewater inlet at the top of the wastewater tank. The wastewater falls onto the coarse filter screen of the primary water filtration system by gravity. After large particles are intercepted, the water continues to pass through the fine filter membrane for secondary filtration. Clean water permeates the filter layer and flows downwards into the clear water chamber. When the robot detects that the clear water level in the chamber has reached the set value... Once the lower limit is set, the built-in pump immediately starts, sending the filtered clean water back to the spray device at the action end through the water outlet, achieving continuous water circulation. During continuous operation, if the filter layer needs to be cleaned, simply stop the spray and close the cover latch, open the maintenance hatch on the base, and pull the frame handle to remove the filter layer as a whole for rinsing or replacement. Then, re-insert it and close the hatch to continue operation. When sediment is observed at the bottom of the tank, unscrew the drain plug to discharge the sediment. After the sewage discharge is completed, tighten the plug to resume operation. The entire process does not require disassembling the entire machine or moving the robot.

[0037] In the above technical solution, the support frame of the primary water filtration system 121 is a ring structure. The outer periphery of the support frame is welded and fixed to the inner wall of the sewage tank 12. The inner periphery of the support frame is provided with a groove, and the edge of the filter layer is embedded in the groove to form a detachable connection.

[0038] Furthermore, in the above technical solution, the filter layer includes a coarse filter screen and a fine filter membrane stacked sequentially from top to bottom. The mesh size of the coarse filter screen is larger than that of the fine filter membrane, and the edges of the coarse filter screen and the fine filter membrane are embedded together in the groove of the support frame.

[0039] Furthermore, in the above technical solution, a clear water chamber 13 is provided inside the sewage tank 12. The clear water chamber 13 is located below the primary water filtration system 121. The clear water chamber 13 is used to collect the water filtered by the primary water filtration system 121. A water outlet is provided on the side wall of the clear water chamber 13. The water outlet is connected to the spray device at the working end through a pipeline.

[0040] Furthermore, in the above technical solution, the top of the sewage tank 12 is provided with an openable tank cover, and a clamping ring is provided on the lower surface of the tank cover. When the tank cover is closed, the clamping ring presses against the upper surface of the primary water filtration system 121.

[0041] Furthermore, in the above technical solution, a sewage inlet is provided on the upper side wall of the sewage tank 12. The sewage inlet is located above the primary water filtration system 121. The sewage inlet is connected to the suction port of the working end 30 through a pipeline. The suction port is used to recover the sewage generated during the cleaning process and introduce it into the sewage tank 12.

[0042] Furthermore, in the above technical solution, a guide plate is provided below the primary water filtration system 121. The guide plate is inclined, with its high end connected to the side wall of the sewage tank 12 and its low end pointing to the bottom of the clear water chamber 13.

[0043] The guide plate is a rectangular thin plate with its long side equal to the short side of the sewage tank, which is approximately one-third the height of the tank. Two parallel creases are stamped along the long side of the plate, forming a shallow groove cross-section that is concave in the middle and slightly upturned on both sides. The overall tilt angle is 10 to 15 degrees to the horizontal plane. The higher end of the guide plate rests against the inner wall of one side of the sewage tank and extends downward along this wall with a short vertical folded edge, which is fixed to the wall with two rivets or spot welding. The lower end points to the center of the bottom of the clear water chamber and folds downward to form a 5 mm high baffle lip to prevent water from flowing back along the wall. The guide plate is located directly below the primary water filtration system, and the two are not rigidly connected: four short columns extend downward from the four corners of the bottom of the support frame, and the end face of the column maintains a gap of three to five millimeters with the bottom of the guide plate groove. This avoids resonance and allows the filtered water droplets to fall into the shallow groove of the guide plate first, and then slide smoothly into the clear water chamber along the slope, realizing the transition relationship of "suspended water reception and guided downward injection".

[0044] Furthermore, in the above technical solution, a handle is provided on the upper surface of the support frame. The handle has an arc-shaped structure, and both ends of the handle are hinged to the support frame.

[0045] Furthermore, in the above technical solution, a sewage outlet is provided at the bottom of the sewage tank 12, and a sealing plug is provided at the sewage outlet, with the sealing plug being threadedly connected to the sewage outlet.

[0046] Furthermore, in the above technical solution, a maintenance door is provided on the upper surface of the base 10. The position of the maintenance door corresponds to the position of the sewage tank. One side of the maintenance door is hinged to the base 10, and the other side is fixed to the base 10 by a latch.

[0047] Example 1: The base uses a rectangular aluminum alloy frame with a vacuum suction cup roller at each of the four corners, allowing free forward, backward, and lateral movement on a smooth glass surface. The drive arm is a two-section parallel four-bar structure, with the end hinged to the operating end. The wastewater tank is centrally located longitudinally along the base, with a depth approximately half the height of the base. A ring-shaped stainless steel support frame is welded to the inside of the tank at one-third of the distance from the top wall. Continuous grooves are formed on the inner circumference of the frame, and the edges of the coarse filter screen and fine filter membrane are embedded in these grooves to form a pull-out filter disc. A cavity is reserved below the filter disc as a clear water chamber, with an outlet port with a quick-connect connector on the bottom side wall of the chamber, connected to a DC diaphragm pump inside the operating end via a hose. One end of the tank cover is hinged to the base; when closed, the silicone clamping ring on the inner surface precisely abuts against the outer edge of the filter disc to prevent wastewater from flowing around. The other end of the tank cover has a push-button lock for one-handed opening. The wastewater inlet is located on the tank wall above the filter disc, and is connected to the slit-type suction port at the lower edge of the working end via a corrugated pipe. The suction port is made of a combination of an elastic rubber strip and a stainless steel scraper. When it slides against the wall, it forms a negative pressure slit, which immediately sucks in the wastewater that has just been washed off.

[0048] In the city center, high-rise office buildings feature large, smooth glass units primarily contaminated with dust and rain stains. A robot is hoisted from the roof in the early morning and descends continuously along the facade, completing the cleaning of the entire curtain wall without needing to return to the roof for rehydration. It only needs to pause every 100 meters to open the hatch, remove the filter plates, and rinse them, maintaining a stable water circulation. This avoids multiple high-altitude hoisting operations and significantly reduces road closure time.

[0049] Example 2: The base uses a triangular carbon fiber chassis with two active rollers at the front and one omnidirectional roller at the rear. All three rollers are magnetic, allowing them to firmly adhere to glass curtain walls with metal frames. The drive arm is a single-section telescopic sleeve, internally housing cables and water pipes. The working end is equipped with a rotating circular brush and annular spray pipe. The wastewater tank is horizontally embedded at the rear of the chassis. Inside the tank, two independently liftable filter layers are arranged side-by-side on the same horizontal line. Each filter layer is surrounded by an engineering plastic support frame, with elastic buckles on the outer edge of the frame that engage with the ribs on the tank wall. A gap is left between the two filter layers, forming a secondary sedimentation zone where the initial filtered water first settles slowly before entering the clear water chamber below. The bottom plate of the clear water chamber is tilted to one side, with an outlet at the lowest point connected to a micro gear pump. A drain plug with a handle is located at the center of the bottom of the tank, allowing manual discharge of settled sediment. The tank cover is made of transparent polycarbonate, allowing observation of filter clogging without opening it. An annular sealing ring is located on the inner surface of the cover, which is secured by four sets of eccentric locking hooks when closed. The wastewater inlet is located at the top of the tank wall and connects to a duckbill-shaped suction hood at the rear edge of the operating end via a quick connector. The suction hood contains a stainless steel filter screen to initially block large debris.

[0050] The curtain wall with metal ribs in coastal industrial areas has a surface that is covered with a mixture of salt spray crystals and oil dust. Magnetic rollers can maintain stable adsorption in windy conditions. Workers operate the robot remotely from the ground, which moves laterally to clean the wall. After each frame unit is completed, the wastewater can be discharged on-site to prevent high-salt wastewater from crystallizing inside the box. This design is suitable for continuous production areas where it is not possible to occupy the suspended platform or roof space for a long time.

[0051] Specifically, the principle of this invention is as follows: This invention utilizes the synergistic effect of gravity settling and shallow filtration to construct a self-separating structure of "dirty above, clean below" within the wastewater tank. The intake port continuously draws recycled wastewater into a high position within the tank, where the wastewater first falls onto the upper surface of the horizontally arranged primary water filtration system. The two-stage structure of the filter layer, from coarse to fine, gradients impurities, preventing larger sand particles and fibers from reaching the surface, while fine dust is adsorbed by the lower membrane material. Water quality is improved as it passes through the filter layer. Because the filter layer is located in the upper part of the tank cavity, a clear water collection space is naturally formed below it. Clean water continuously sinks and collects under gravity, achieving a dynamic balance of "simultaneous intake, filtration, and storage." When the liquid level reaches the height of the pump inlet, the filtered clear water is sent back to the action end to re-participate in wetting and washing, forming a closed loop. The support frame is fixed to the tank wall, ensuring the filter plane remains horizontal during robot movement and boom swing, preventing impurities from bypassing. The tank cover clamping ring provides an end-face seal, preventing untreated wastewater from overflowing directly and inhibiting warping deformation of the filter layer due to vibration. The inclined guide plate uses its slope to guide water flow down the wall, reducing the kinetic energy of the falling water, minimizing disturbance to the clear water chamber surface, maintaining stable water flow in the pump inlet area, and avoiding cavitation and additional power consumption. When impurities accumulate on the filter layer surface to the point of affecting throughput, maintenance personnel only need to stop the machine, open the hatch, remove the frame and filter layer as a whole using the handle, rinse offline, and re-embed to restore performance. A small amount of heavy particles settled at the bottom of the tank are quickly discharged through the bottom drain plug without needing to overturn the entire machine. The entire circulation process requires no external pressure vessel or chemical agents, relying solely on gravity, capillary filtration, and pump suction return. The system has a simple structure, low energy consumption, and high reliability, allowing the robot to obtain a continuously usable secondary water source without increasing the water tank volume, thus significantly extending the single continuous operation time.

Claims

1. A water supply circulation structure for a glass curtain wall cleaning robot, characterized in that: The cleaning robot includes a base, a drive arm, and an operating end connected in sequence. One end of the drive arm is connected to the base, and the other end is connected to the operating end. The base is equipped with rollers. A sewage tank is installed inside the base. A primary water filtration system is installed in the upper part of the sewage tank. The primary water filtration system includes a filter layer and a support frame. The filter layer is horizontally fixed to the upper part of the sewage tank through the support frame. The edge of the filter layer is tightly attached to the inner wall of the sewage tank. The filtered sewage meets the standard for reuse.

2. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 1, characterized in that, The primary water filtration system has a ring-shaped support frame. The outer periphery of the support frame is welded and fixed to the inner wall of the sewage tank. The inner periphery of the support frame is provided with a groove, and the edge of the filter layer is embedded in the groove to form a detachable connection.

3. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 2, characterized in that, The filter layer includes a coarse filter screen and a fine filter membrane stacked from top to bottom. The mesh size of the coarse filter screen is larger than that of the fine filter membrane. The edges of the coarse filter screen and the fine filter membrane are embedded together in the groove of the support frame.

4. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 3, characterized in that, The wastewater tank is equipped with a clear water chamber located below the primary water filtration system. The clear water chamber is used to collect water that has been filtered by the primary water filtration system. The side wall of the clear water chamber is equipped with a water outlet, which is connected to the spray device at the action end through a pipeline.

5. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 4, characterized in that, The wastewater tank is equipped with an openable cover on top, and a clamping ring is provided on the lower surface of the cover. The clamping ring presses against the upper surface of the primary water filtration system when the cover is closed.

6. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 5, characterized in that, The upper side wall of the wastewater tank is provided with a wastewater inlet, which is located above the primary water filtration system. The wastewater inlet is connected to the suction port at the working end through a pipeline. The suction port is used to collect the wastewater generated during the cleaning process and introduce it into the wastewater tank.

7. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 6, characterized in that, A guide plate is installed below the primary water filtration system. The guide plate is inclined, with its high end connected to the side wall of the sewage tank and its low end pointing to the bottom of the clear water chamber.

8. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 7, characterized in that, The upper surface of the support frame is provided with a handle, which has an arc structure and is hinged to the support frame at both ends.

9. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 8, characterized in that, The bottom of the sewage tank is provided with a sewage outlet, and the sewage outlet is provided with a sealing plug, which is threadedly connected to the sewage outlet.

10. The water supply circulation structure of a glass curtain wall cleaning robot according to claim 9, characterized in that, The upper surface of the base is provided with a maintenance door, the position of which corresponds to the position of the sewage tank. One side of the maintenance door is hinged to the base, and the other side is fixed to the base by a latch.

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