Water quality on-line monitoring structure capable of self-cleaning

Abstract

The utility model discloses a water quality on -line monitoring structure of can self -cleaning, including monitoring floating plate, the controller is fixedly installed to monitoring floating plate upper end, the pressure support frame board is fixedly installed to monitoring floating plate upper end, is equipped with the lifting adjustment subassembly on the pressure support frame board, the water quality on -line monitor is installed to the lifting adjustment subassembly lower extreme, is equipped with the mobile cleaning subassembly to monitoring floating plate upper end, and the mobile cleaning subassembly includes the installation side plate of fixed installation one side in monitoring floating plate upper end, the hydraulic telescopic push rod of fixed installation in installation side plate side end, the cleaning box of detachable connection in hydraulic telescopic push rod output end. The utility model has the advantages of quick cleaning, and the cleaning efficiency of water quality on -line monitoring structure is improved significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of online water quality monitoring structures, specifically a self-cleaning online water quality monitoring structure. Background Technology

[0002] The online water quality monitoring system is an integrated system that can collect water parameters continuously and automatically over a long period of time, and realize data transmission, analysis and cleaning maintenance. Its core objective is to replace traditional manual sampling and testing, capture water quality changes in real time, and provide continuous and reliable data support for water environment management, pollution early warning and ecological protection.

[0003] Traditional online water quality monitoring systems require manual, periodic visits to monitoring points to disassemble and clean sensors. If the monitoring point is located in a remote river, deep water area, or near a hazardous chemical industrial park, the cost of manual round-trip transportation accounts for more than 60% of the total equipment operation and maintenance cost. Some underwater sensors require diving operations, which pose risks of drowning and electric shock. At the same time, when cleaning traditional online monitoring systems manually, staff often wipe the sensors directly with the water at the monitoring point. If the water contains high concentrations of suspended solids or chemical pollutants, cleaning may leave new pollutants on the sensor surface, exacerbating data drift. Utility Model Content

[0004] The purpose of this invention is to provide a self-cleaning online water quality monitoring structure, which has the advantage of rapid cleaning and solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A self-cleaning online water quality monitoring structure includes a monitoring float, a controller fixedly installed at the upper end of the monitoring float, a pressure-bearing support plate fixedly installed at the upper end of the monitoring float, a lifting adjustment component provided on the pressure-bearing support plate, an online water quality monitor installed at the lower end of the lifting adjustment component, and a mobile cleaning component provided at the upper end of the monitoring float. The mobile cleaning component includes a mounting side plate fixedly installed on one side of the upper end of the monitoring float, a hydraulic telescopic push rod fixedly installed on the side end of the mounting side plate, and a cleaning box detachably connected to the output end of the hydraulic telescopic push rod.

[0007] Preferably, the lifting and adjusting assembly includes a vertical hydraulic rod fixedly installed on the pressure-bearing support plate and a limiting plate fixedly installed on the output end of the vertical hydraulic rod.

[0008] It is worth noting that the vertical hydraulic rod drives the limit plate and the lower parts to rise and fall, adjusting the water depth of the water quality sensor to adapt to different water depths or stratified monitoring needs; however, it is necessary to check the hydraulic oil level regularly to avoid insufficient oil causing lifting and lowering to stall.

[0009] Preferably, a waterproof support vertical rod is fixedly installed at the lower end of the limiting plate, and a waterproof support frame is fixedly installed at the lower end of the waterproof support vertical rod.

[0010] It is worth noting that the waterproof support frame secures the waterproof mounting plate and the online water quality monitor, distributing the sensor weight and enhancing the stability of the underwater structure; however, it is necessary to regularly clean the aquatic plants and debris entangled on the support frame to prevent obstructing water flow and contact with the sensor.

[0011] Preferably, a waterproof mounting plate connected to the upper end of the online water quality monitor is fixedly installed at the lower end of the waterproof support frame. Multiple sets of water quality sensors are installed at the lower end of the online water quality monitor, and a monitoring through slot is opened through the inside of the monitoring float.

[0012] It is worth noting that water quality sensors come into direct contact with water bodies to collect key water quality parameters such as pH, dissolved oxygen, and turbidity; however, care must be taken to avoid violent impacts to prevent damage to the optical probe or electrodes.

[0013] Preferably, a waterproof control box is fixedly installed at the lower end of the cleaning box, a waterproof rotary motor is fixedly installed at the center of the inside of the waterproof control box, and a drain valve is installed at one end of the outer side of the cleaning box.

[0014] It is worth noting that the waterproof control box protects the waterproof rotary motor and internal circuitry, isolating them from water and moisture; however, it is necessary to check the desiccant inside the waterproof control box monthly and replace it promptly if it gets damp.

[0015] Preferably, a vertical rotating rod is fixedly installed at the output end of the waterproof rotary motor, a rotating through groove is opened at the bottom of the cleaning box, and a waterproof sealing ring is fixedly installed at the connection between the vertical rotating rod and the bottom of the cleaning box.

[0016] It is worth noting that the waterproof sealing ring seals the gap between the rotating groove and the vertical rotating rod, preventing water from seeping into the waterproof control box during cleaning. However, the sealing ring should be replaced every six months to avoid aging and cracking due to long-term friction. Food-grade silicone oil should be applied for lubrication when replacing it.

[0017] Preferably, multiple sets of rotating base plates are fixedly installed on the outside of the vertical rotating rod, and a cleaning soft brush is provided at the upper end of the rotating base plate.

[0018] It is worth noting that the cleaning brush directly contacts the surface of the water quality sensor and removes contaminants such as biofilm and suspended solids through rotational friction; however, care should be taken to avoid brushing the water quality sensor cable interface.

[0019] Preferably, a clean water storage tank is fixedly installed on the upper end of the monitoring float, a pump body is installed on the upper end of the clean water storage tank, a spray water pipe is installed on the upper end of the clean water tank, and a delivery hose is connected between the spray water pipe and the water delivery end of the pump body. Multiple sets of cleaning nozzles are fixedly installed on the inner side of the delivery hose.

[0020] It is worth noting that the cleaning nozzle atomizes or sprays high-pressure water onto the surface of the water quality sensor to wash away contaminant debris generated by the friction of the soft brush; however, it is necessary to check the cleaning nozzle for blockages weekly, as blockages can lead to cleaning dead zones.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In this invention, the lifting and adjusting component can move the online water quality monitor up and down, thereby controlling the water immersion depth of the online monitor and completing the cleaning process in conjunction with the mobile cleaning component. At the same time, the mobile cleaning component can clean the online water quality monitor in a timely manner, removing pollutants such as biofilm, suspended solids, and algae from the surface of the water quality sensor. The cleaning process does not require disassembling the sensor, reducing equipment wear and tear, and can replace manual cleaning, significantly reducing operation and maintenance costs and safety risks. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the horizontal slider of this utility model;

[0025] Figure 3 This is a three-dimensional disassembled structural diagram of the protective outer frame strip of this utility model;

[0026] Figure 4 This is a three-dimensional disassembled structural diagram of the lifting mounting plate of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the second connecting plate of this utility model.

[0028] Reference numerals: 1. Monitoring float; 2. Controller; 3. Pressure-bearing support frame; 5. Online water quality monitor; 101. Monitoring through-slot; 401. Vertical hydraulic rod; 402. Limiting plate; 403. Waterproof support vertical rod; 404. Waterproof support frame; 405. Waterproof mounting plate; 406. Water quality sensor; 601. Mounting side plate; 602. Hydraulic telescopic push rod; 603. Cleaning tank; 604. Waterproof control box; 605. Waterproof rotary motor; 606. Vertical rotating rod; 607. Rotating through-slot; 608. Waterproof sealing ring; 609. Rotating base plate; 610. Cleaning soft brush; 611. Cleaning water storage tank; 612. Pump body; 613. Spray water pipe; 614. Delivery hose; 615. Cleaning nozzle; 616. Drain valve. Detailed Implementation

[0029] In the modernization process of water environment governance and ecological protection, online water quality monitoring structures have become a core technological support tool. Essentially, they are an integrated system combining real-time sensing, data processing, and intelligent maintenance. This system, through modular design, organically combines water quality sensors, data transmission units, automated control components, and maintenance actuators. It can overcome the spatial and temporal limitations of traditional manual monitoring—not only can it operate 24 / 7 in various scenarios such as rivers, lakes, reservoirs, and sewage treatment plant effluents, but it can also continuously collect key parameters such as pH, dissolved oxygen concentration, turbidity, ammonia nitrogen content, and chemical oxygen demand (COD) of the water body through preset monitoring frequencies, forming a complete water quality change curve.

[0030] More importantly, the online water quality monitoring structure is not merely a "data acquisition tool," but possesses closed-loop capabilities for data processing and transmission: the raw analog signals collected by sensors, such as 4-20mA current signals, are converted into digital information by the data acquisition unit. After filtering and calibration, they are uploaded to the cloud management platform via wireless communication technologies such as 4G, NB-IoT, or LoRa. The platform can display water quality data in real time, generate trend reports, and automatically trigger audible and visual alarms or SMS notifications when a certain indicator exceeds a preset threshold, providing timely pollution warnings to environmental regulatory departments and wastewater treatment companies. In addition, modern online water quality monitoring structures generally integrate self-cleaning and self-calibration maintenance functions, further reducing manual intervention and ensuring data reliability during long-term operation. Its ultimate goal is to replace the traditional discrete monitoring mode of "manual sampling + laboratory analysis" through technological means, providing continuous and effective data support for the precision and intelligence of water environment management.

[0031] However, in the early stages of the development of online water quality monitoring technology, traditional online monitoring structures, due to design flaws, failed to completely break free from their dependence on manual labor. In particular, many unavoidable problems were exposed in the sensor maintenance process. These problems not only increased the operation and maintenance costs, but also seriously affected the validity of the monitoring data, and even brought about safety hazards.

[0032] One of the core pain points of traditional online water quality monitoring systems is that sensor cleaning relies entirely on regular manual operation, resulting in high maintenance costs. As the "sensing core" of the monitoring system, water quality sensors are highly susceptible to contaminant adhesion when immersed in water for extended periods. In eutrophic lakes, algal spores can form a biofilm on the sensor's light-transmitting surface within 24-48 hours. In municipal wastewater treatment plant effluent, activated sludge flocs and grease can clog the permeable membrane of dissolved oxygen sensors. At industrial wastewater discharge outlets, high concentrations of suspended solids can even form hard scale on the pH electrode surface. These contaminants directly lead to a decrease in sensor detection accuracy. For example, after the dissolved oxygen sensor membrane is contaminated, the reading error can increase from ±2% to over ±10%. If not cleaned in time, it will eventually result in false values ​​showing "no change in data," rendering the monitoring meaningless.

[0033] To address this issue, traditional structures must rely on regular manual disassembly and cleaning, with a cleaning cycle typically lasting 3-7 days. The costs and risks of this process far exceed expectations. If monitoring points are located in remote mountainous areas, deep waters of rivers and reservoirs, or near chemical industrial parks, manual maintenance incurs costs for round-trip transportation, accommodation, and labor. Statistics show that labor costs account for over 60% of the total annual maintenance cost in these scenarios, reaching as high as 80% in some remote areas. Even more serious is the fact that when sensors are installed at depths exceeding 2 meters, maintenance personnel must wear diving gear to disassemble them. This not only results in low efficiency, with each disassembly and cleaning session taking 1-2 hours, but also presents multiple safety risks: water flow may cause divers to lose their balance, aging sensor terminals may pose an electric shock hazard, and the presence of toxic or harmful substances in the monitored water could cause skin burns or poisoning. Even in shallow waters around cities, manual disassembly and cleaning requires wading, and accidents such as slipping and frostbite are common in rainy or winter weather. These safety hazards pose significant obstacles to the widespread application of traditional monitoring structures.

[0034] Another major limitation of traditional online water quality monitoring structures is that manual cleaning methods are prone to secondary contamination of sensors, exacerbating data drift and creating a vicious cycle of "the more you wash, the dirtier it gets." Due to the lack of standardized cleaning procedures and clean water supply design, maintenance personnel often use the water at the monitoring point as a cleaning medium on-site—wiping the sensor surface with a cloth soaked in river water, lake water, or sewage. However, these water bodies generally contain high concentrations of suspended solids, microorganisms, or chemical residues. During the cleaning process, these contaminants can embed themselves into the tiny gaps on the sensor surface through physical friction or react with the sensor material through chemical adsorption. For example, wiping a turbidity sensor with industrial wastewater containing heavy metals will form permanent stains on the transparent glass surface; cleaning a pH electrode with lake water containing algae will cause the electrode response speed to slow down, and the reading lag time will increase from 1 second to more than 5 seconds.

[0035] More seriously, the impact of secondary pollution is insidious—shortly after cleaning, sensor readings may appear to return to normal, but as contaminants slowly diffuse inside the sensor, the data will drift drastically again after 3-5 days. Maintenance personnel often mistakenly believe it is a sensor malfunction, repeatedly disassembling and cleaning it without solving the problem, ultimately leading to long-term data failure. In addition, the "violent operation" in the traditional cleaning process can also accelerate sensor wear and tear: to remove hard dirt, some maintenance personnel will use steel wool, screwdrivers and other hard objects to scrape the sensor surface, directly damaging the glass membrane of the pH electrode or the optical lens of the turbidity sensor, causing the sensor to fail prematurely and further increasing the cost of equipment replacement.

[0036] The essence of these problems lies in the fact that traditional online water quality monitoring structures lack the design of "automated cleaning execution units" and "clean cleaning systems," relying entirely on human experience and on-site conditions, which cannot meet the long-term, stable, and accurate monitoring needs. The emergence of modern self-cleaning online water quality monitoring structures, by integrating mobile cleaning components, clean water source storage units, and automated control logic, fundamentally solves these pain points and promotes the development of water quality monitoring technology towards "unmanned operation and intelligent maintenance."

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] To address the inconvenience of manual cleaning in existing technologies, the following technical solution is provided. Please refer to [link / reference needed]. Figure 1-5 ;

[0039] A self-cleaning online water quality monitoring structure includes a monitoring float 1, a controller 2 fixedly mounted on the upper end of the monitoring float 1, a pressure-bearing support plate 3 fixedly mounted on the upper end of the monitoring float 1, a lifting adjustment assembly on the pressure-bearing support plate 3, an online water quality monitor 5 mounted on the lower end of the lifting adjustment assembly, and a movable cleaning assembly on the upper end of the monitoring float 1. The movable cleaning assembly includes a mounting side plate 601 fixedly mounted on one side of the upper end of the monitoring float 1, a hydraulic telescopic push rod 602 fixedly mounted on the side end of the mounting side plate 601, and a cleaning housing 603 detachably connected to the output end of the hydraulic telescopic push rod 602. The lifting adjustment assembly includes a fixed mounting... A vertical hydraulic rod 401 is mounted on the pressure-bearing support plate 3, and a limiting plate 402 is fixedly installed at the output end of the vertical hydraulic rod 401. A waterproof support vertical rod 403 is fixedly installed at the lower end of the limiting plate 402, and a waterproof support frame 404 is fixedly installed at the lower end of the waterproof support vertical rod 403. A waterproof mounting plate 405 connected to the upper end of the online water quality monitor 5 is fixedly installed at the lower end of the online water quality monitor 5. Multiple sets of water quality sensors 406 are installed at the lower end of the online water quality monitor 5. A monitoring through slot 101 is opened through the inside of the monitoring float 1. The water quality sensors 406 directly contact the water body and collect key water quality parameters such as pH, dissolved oxygen, and turbidity.

[0040] A waterproof control box 604 is fixedly installed at the lower end of the cleaning box 603. A waterproof rotary motor 605 is fixedly installed at the center of the waterproof control box 604. A drain valve 616 is installed at one end of the outer side of the cleaning box 603. A vertical rotating rod 606 is fixedly installed at the output end of the waterproof rotary motor 605. A rotating groove 607 is opened at the bottom of the cleaning box 603. A waterproof sealing ring 608 is fixedly installed at the connection between the vertical rotating rod 606 and the bottom of the cleaning box 603. Multiple sets of rotating base plates 609 are fixedly installed on the outer side of the vertical rotating rod 606. A cleaning brush 610 is provided on the upper end of the rotating base plate 609. A cleaning water storage tank 611 is fixedly installed on the upper end of the monitoring float 1. A pump body 612 is installed on the upper end of the cleaning water storage tank 611. A spray water pipe 613 is installed on the upper end of the cleaning tank 603. The spray water pipe 613 is connected to the water supply end of the pump body 612 by a delivery hose 614. Multiple sets of cleaning nozzles 615 are fixedly installed inside the delivery hose 614. The cleaning nozzles 615 atomize or spray high-pressure water onto the surface of the water quality sensor 406 to wash away the pollutant debris generated by the friction of the brush.

[0041] Working principle: The controller 2 sends a command to the vertical hydraulic rod 401 of the lifting adjustment component. The vertical hydraulic rod 401 drives the limit plate 402 at the output end to move downward. The limit plate 402 drives the waterproof support vertical rod 403 at the lower end, the waterproof support frame 404 at the lower end of the waterproof support vertical rod 403, the waterproof mounting plate 405 at the lower end of the waterproof support frame 404, and the water quality online monitor 5 connected to the waterproof mounting plate 405 to move downward synchronously. Multiple sets of water quality sensors 406 at the lower end of the water quality online monitor 5 extend into the water body through the monitoring through groove 101 inside the monitoring float 1. The controller 2 controls the vertical hydraulic rod 401 to stop running according to the preset monitoring depth, thus completing the water quality sensor 406 water entry positioning.

[0042] The multiple water quality sensors 406 of the online water quality monitor 5 are in direct contact with the water body to collect key water quality parameters such as pH, dissolved oxygen, and turbidity in real time. The collected data is transmitted to the controller 2, which processes and stores the data and can determine whether the water quality is abnormal or whether the sensors are at risk of contamination based on preset logic.

[0043] When the controller 2 determines that the surface of the water quality sensor 406 may be covered with pollutants such as biofilm and suspended solids, or when the preset cleaning cycle has been reached, the cleaning process is triggered. The controller 2 first sends a command to the vertical hydraulic rod 401 of the lifting and adjusting component. The vertical hydraulic rod 401 drives the limit plate 402, the waterproof support vertical rod 403, the waterproof support frame 404, the waterproof mounting plate 405, and the water quality online monitor 5 to move upward, so that the water quality sensor 406 is lifted out of the water body through the monitoring through groove 101. At the same time, the controller 2 sends a command to the hydraulic telescopic push rod 602 of the moving cleaning component. The hydraulic telescopic push rod 602 drives the cleaning box 603, which is detachably connected to the output end, to move horizontally, so that the cleaning box 603 accurately covers the water quality sensor 406 below, and the hydraulic telescopic push rod 602 stops operating.

[0044] The controller 2 sends a command to the waterproof rotary motor 605 inside the waterproof control box 604 at the lower end of the cleaning box 603. The waterproof rotary motor 605 starts, and its output drives the vertical rotating rod 606 to rotate. Multiple sets of rotating base plates 609 on the outside of the vertical rotating rod 606 rotate synchronously with the vertical rotating rod 606. The cleaning soft brush 610 at the upper end of the rotating base plate 609 contacts the surface of the water quality sensor 406 and removes the contaminants on the sensor surface through rotational friction. At the same time, the controller 2 commands the pump 612 at the upper end of the cleaning water storage tank 611 at the upper end of the monitoring float 1 to start. The pump 612 pressurizes the cleaning water in the cleaning water storage tank 611 and delivers it through the delivery hose 614 to the spray water pipe 613 at the upper end of the cleaning box 603. The spray water pipe 613 then distributes it to multiple sets of cleaning nozzles 615 inside the delivery hose 614. The cleaning nozzles 615 atomize or spray the high-pressure water into the surface of the water quality sensor 406 to wash away the contaminant debris generated by the friction of the soft brush.

[0045] After the cleaning process is completed, the controller 2 instructs the drain valve 616 at one end of the outer side of the cleaning box 603 to open, and the wastewater in the cleaning box 603 is discharged through the drain valve 616. After the drainage is completed, the drain valve 616 is closed.

[0046] The controller 2 commands the waterproof rotary motor 605 to stop running, and the vertical rotating rod 606, rotating base plate 609, and cleaning soft brush 610 to stop rotating; at the same time, it commands the hydraulic telescopic push rod 602 to retract, driving the cleaning box 603 to move horizontally to reset and move away from the water quality sensor 406.

[0047] The controller 2 instructs the vertical hydraulic rod 401 to drive the limit plate 402, waterproof support vertical rod 403, waterproof support frame 404, waterproof mounting plate 405 and water quality online monitor 5 to move downward, so that the water quality sensor 406 can be inserted into the water body again through the monitoring through groove 101 to the preset monitoring depth, and resume daily water quality monitoring.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A self-cleaning online water quality monitoring structure, comprising a monitoring float (1), characterized in that, A controller (2) is fixedly installed on the upper end of the monitoring float (1), a pressure support frame plate (3) is fixedly installed on the upper end of the monitoring float (1), a lifting adjustment component is provided on the pressure support frame plate (3), a water quality online monitor (5) is installed at the lower end of the lifting adjustment component, and a mobile cleaning component is provided on the upper end of the monitoring float (1). The mobile cleaning component includes an installation side plate (601) fixedly installed on one side of the upper end of the monitoring float (1), a hydraulic telescopic push rod (602) fixedly installed on the side end of the installation side plate (601), and a cleaning box (603) detachably connected to the output end of the hydraulic telescopic push rod (602).

2. The self-cleaning online water quality monitoring structure according to claim 1, characterized in that, The lifting and adjusting assembly includes a vertical hydraulic rod (401) fixedly installed on the pressure support plate (3) and a limit plate (402) fixedly installed on the output end of the vertical hydraulic rod (401).

3. The self-cleaning online water quality monitoring structure according to claim 2, characterized in that, A waterproof support rod (403) is fixedly installed at the lower end of the limiting plate (402), and a waterproof support frame (404) is fixedly installed at the lower end of the waterproof support rod (403).

4. The self-cleaning online water quality monitoring structure according to claim 3, characterized in that, A waterproof mounting plate (405) is fixedly installed at the lower end of the waterproof support frame (404) and connected to the upper end of the online water quality monitor (5). Multiple sets of water quality sensors (406) are installed at the lower end of the online water quality monitor (5). A monitoring through slot (101) is opened through the inside of the monitoring float (1).

5. The self-cleaning online water quality monitoring structure according to claim 1, characterized in that, A waterproof control box (604) is fixedly installed at the lower end of the cleaning box (603). A waterproof rotary motor (605) is fixedly installed at the center of the interior of the waterproof control box (604). A drain valve (616) is installed at one end of the outer side of the cleaning box (603).

6. The self-cleaning online water quality monitoring structure according to claim 5, characterized in that, A vertical rotating rod (606) is fixedly installed at the output end of the waterproof rotary motor (605), and a rotating through groove (607) is opened at the bottom end of the cleaning box (603). A waterproof sealing ring (608) is fixedly installed at the connection between the vertical rotating rod (606) and the bottom end of the cleaning box (603).

7. The self-cleaning online water quality monitoring structure according to claim 6, characterized in that, Multiple sets of rotating base plates (609) are fixedly installed on the outside of the vertical rotating rod (606), and a cleaning soft brush (610) is provided on the upper end of the rotating base plate (609).

8. The self-cleaning online water quality monitoring structure according to claim 1, characterized in that, A clean water storage tank (611) is fixedly installed on the upper end of the monitoring float (1). A pump body (612) is installed on the upper end of the clean water storage tank (611). A spray water pipe (613) is installed on the upper end of the cleaning tank (603). A delivery hose (614) is connected between the spray water pipe (613) and the water delivery end of the pump body (612). Multiple sets of cleaning nozzles (615) are fixedly installed inside the delivery hose (614).

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