A cleaning device for a wall-hung boiler

Abstract

This utility model belongs to the field of wall-hung boiler cleaning technology, specifically a cleaning device for wall-hung boilers, including a water tank. A first motor is installed on the top of the water tank, and a rotating shaft is connected to the output end of the first motor. Multiple stirring blades are fixed on the outer surface of the rotating shaft. A water injection pipe and a feeding pipe are connected to the top side of the water tank. During the cleaning process, before the water containing dirt flows back into the water tank through the return pipe, it first passes through a filter screen. The filter screen intercepts and filters impurities in the wastewater, allowing the wastewater without dirt and impurities to flow back into the water tank through the return pipe. This facilitates the recycling of water resources and saves water. The filtered clean water re-enters the circulation, avoiding the decrease in cleaning solution concentration caused by the accumulation of impurities, ensuring the effectiveness of subsequent cleaning, and preventing these impurities from re-entering the interior of the wall-hung boiler, thus preventing secondary pollution.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology for wall-hung boilers, specifically a cleaning device for wall-hung boilers. Background Technology

[0002] A wall-hung boiler is short for a gas-fired wall-hung boiler, which is a type of water heater powered by natural gas. After long-term use, the water in the heating system will form scale due to high-temperature evaporation and mineral precipitation. This scale adheres to the surface of the heat exchanger, resulting in a significant decrease in heat exchange efficiency. Cleaning can remove the scale adhering to the surface of the heat exchanger and significantly improve heat transfer efficiency.

[0003] A Chinese patent with publication number CN221376434U discloses a wall-hung boiler cleaning device that can effectively improve cleaning efficiency. The device includes a water tank and a controller. The water tank has an inlet at its top, a circulation pump on one side, a first water pipe on the circulation pump, and a second water pipe on the other side of the water tank. The controller has several cables, each with an ultrasonic generator at one end. Each ultrasonic generator has a main pipe clamp at its top, and a secondary pipe clamp at the top of each main pipe clamp. Connecting plates are located on both sides of the main and secondary pipe clamps. Connectors are located at one end of the first and second water pipes. The ultrasonic generator and controller are electrically connected via cables, and the circulation pump and controller are electrically connected via wires. A top cover is installed on the water inlet.

[0004] In the aforementioned wall-hung boiler cleaning device, the water containing dirt flows directly into the storage tank through the return pipe during the cleaning process. As the cleaning process continues, the cleaning agent in the storage tank gradually becomes contaminated, and its ability to dissolve and remove dirt decreases, resulting in poor cleaning effect. Therefore, a cleaning device for wall-hung boilers is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background, this utility model proposes a cleaning device for wall-hung boilers.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A cleaning device for wall-hung boilers, comprising a water tank, a first motor installed on the top of the water tank, a rotating shaft connected to the output end of the first motor, and multiple stirring blades fixed on the outer surface of the rotating shaft. A water injection pipe and a feeding pipe are connected to the top side of the water tank, and the water injection pipe and the feeding pipe are respectively located on both sides of the first motor. Before cleaning the wall-hung boiler, clean water and descaling agent are added to the water tank through the water injection pipe and the feeding pipe, respectively. The first motor is started, causing the stirring blades to rotate. The high-speed rotation of the stirring blades enables the descaling agent and clean water to be fully and evenly mixed, ensuring that the composition of the cleaning solution is uniform and consistent, avoiding local descaling agent concentrations that are too low or too high, and more effectively dissolving scale and rust, thus improving the cleaning effect.

[0007] A circulation pump is installed on one side wall of the water tank. The inlet of the circulation pump is connected to a pumping pipe, and the outlet of the circulation pump is connected to a hose. A first connector is provided at the other end of the hose. A return water pipe is connected to the other side wall of the water tank. A second connector is provided at the other end of the return water pipe. A one-way valve is installed on the return water pipe. A control panel is installed on the side wall of the water tank. The control panel is used to control the start and stop of the first motor, the circulation pump, the second motor, and the air pump. After the clean water and descaling agent are mixed evenly, when cleaning the wall-hung boiler, the hose is first connected to the inlet pipe of the wall-hung boiler through the first connector, and the return water pipe is connected to the return water pipe of the wall-hung boiler through the second connector. Then, the cleaning solution mixed with descaling agent is pumped out through the pumping pipe and flows into the inlet pipe through the hose. Then, it flows into the interior of the wall-hung boiler. The cleaning solution circulates inside the wall-hung boiler, dissolving scale, rust, and other dirt, thus achieving the cleaning purpose.

[0008] Preferably, a filter box is connected to the return water pipe, and two fixing plates are fixedly connected between the filter box and the water tank. A filter screen is installed inside the filter box. During the cleaning process, water containing dirt will pass through the filter screen before flowing back into the water tank through the return water pipe. The filter screen intercepts and filters impurities in the wastewater, allowing wastewater without dirt and impurities to flow back into the water tank through the return water pipe. This facilitates the recycling of water resources and saves water. The filtered clean water re-enters the circulation, avoiding the decrease in cleaning solution concentration caused by the accumulation of impurities, ensuring the effectiveness of subsequent cleaning, and preventing these impurities from re-entering the wall-hung boiler to prevent secondary pollution.

[0009] Preferably, two guide rods are fixedly connected inside the filter box, and a lifting plate is slidably mounted on the two guide rods. A scraper is installed on the lifting plate, and a cavity tube is fixed on the bottom side wall of the scraper. Multiple nozzles are connected to the cavity tube. An air pump is installed on the top side of the filter box. The input port of the air pump is connected to an air inlet pipe, and the output port of the air pump is connected to an air pipe channel, the other end of which is connected to the cavity tube. A threaded rod is rotatably installed inside the filter box, and the threaded rod is positioned between the two guide rods and passes through the lifting plate. A second motor is installed on the top side of the filter box, and the output end of the second motor is connected to the threaded rod. One end of the scraper is connected to the filter screen. To prevent the filter screen from clogging, it needs to be cleaned regularly. The second motor operates to move the scraper along the surface of the filter screen, thereby scraping away the impurities attached to the surface. At the same time, the air pump is activated, which sprays high-pressure gas through the nozzle onto the filter screen. The high-pressure gas can penetrate deep into the filter holes and blow out the fine impurities that are difficult to scrape out, effectively solving the problem of difficult cleaning inside the filter holes and achieving a comprehensive and thorough cleaning of the filter screen. This combination of mechanical scraping and air blowing can clean the filter screen more thoroughly and completely, avoid impurity residue, and improve the cleaning effect.

[0010] Preferably, the filter box has a discharge port on its bottom side, and limit slide rails are installed on both sides of the discharge port. The two limit slide rails are slidably fitted with a sealing cover. A drain pipe is connected to one side of the bottom of the filter box. When using the device, the discharge port can be opened or closed as needed by the cooperation of the limit slide rails and the sealing cover. By setting the discharge port, it is convenient to remove the intercepted and scraped impurities. When the impurities blocking the filter holes are blown out by high-pressure gas, the impurities blown out from the filter holes will be discharged through the drain pipe.

[0011] The advantages of this utility model are:

[0012] 1. In the cleaning process of this utility model, before the water containing dirt flows back into the water tank through the return pipe, it first passes through a filter screen. The filter screen intercepts and filters impurities in the wastewater, allowing the wastewater without dirt and impurities to flow back into the water tank through the return pipe. This facilitates the recycling of water resources and saves water. The filtered clean water re-enters the circulation, avoiding the decrease in cleaning solution concentration caused by the accumulation of impurities, ensuring the effectiveness of subsequent cleaning, and preventing these impurities from re-entering the wall-hung boiler to prevent secondary pollution.

[0013] 2. To prevent filter screen clogging, this invention requires regular cleaning. A second motor moves a scraper along the filter screen surface, removing impurities. Simultaneously, an air pump is activated, spraying high-pressure gas through nozzles onto the filter screen. This high-pressure gas penetrates deep into the filter pores, blowing out small impurities that are difficult to scrape out, effectively solving the problem of cleaning the filter pores and achieving a thorough cleaning of the filter screen. This combination of mechanical scraping and air blowing ensures a more thorough cleaning of the filter screen, preventing impurity residue and improving cleaning efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a schematic diagram of the overall front-view three-dimensional structure of the device;

[0016] Figure 2 This is a cross-sectional three-dimensional structural diagram of the water tank.

[0017] Figure 3 This is a schematic diagram showing the overall planar structure of the device;

[0018] Figure 4 This is a cross-sectional three-dimensional structural diagram of the filter box;

[0019] Figure 5 A cross-sectional view of the filter box is shown as a structural schematic diagram.

[0020] Figure 6 A schematic diagram of the three-dimensional structure of the cleaning mechanism;

[0021] Figure 7 A schematic diagram of the three-dimensional structure of the cleaning components;

[0022] In the diagram: 1. Water tank; 2. First motor; 3. Rotating shaft; 4. Stirring blades; 5. Water injection pipe; 6. Feeding pipe; 7. Circulating pump; 8. Pumping pipe; 9. Outlet hose; 10. First connector; 11. Return water pipe; 12. Second connector; 13. Filter box; 14. Fixing plate; 15. Filter screen; 16. Guide rod; 17. Lifting plate; 18. Threaded rod; 19. Second motor; 20. Scraper; 21. Hollow tube; 22. Nozzle; 23. Air pump; 24. Air pipe channel; 25. Air inlet pipe; 26. Limiting slide rail; 27. Sealing cover plate; 28. Sewage pipe; 29. ​​Control panel. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] Please see Figure 1-3 As shown, a cleaning device for a wall-hung boiler includes a water tank 1. A first motor 2 is mounted on the top of the water tank 1. The output end of the first motor 2 is connected to a rotating shaft 3. Multiple stirring blades 4 are fixed on the outer surface of the rotating shaft 3. A water injection pipe 5 and a feeding pipe 6 are connected to the top side of the water tank 1, and the water injection pipe 5 and the feeding pipe 6 are located on opposite sides of the first motor 2. A circulation pump 7 is mounted on one side wall of the water tank 1. The input port of the circulation pump 7 is connected to a water suction pipe 8, and the output port of the circulation pump 7 is connected to a water outlet hose 9. A first connector 10 is provided at the other end of the water outlet hose 9. A return water pipe 11 is connected to the other side wall of the water tank 1, and a second connector 12 is provided at the other end of the return water pipe 11. A one-way valve is installed on the return water pipe 11, and a control panel 29 is installed on the side wall of the water tank 1. The control panel 29 is used to control the start and stop of the first motor 2, the circulating pump 7, the second motor 19, and the air pump 23. During operation, before cleaning the wall-hung boiler, clean water is first added to the water tank 1 through the water injection pipe 5, and descaling agent is added to the water tank 1 through the feed pipe 6. Then, the first motor 2 is started, causing the rotating shaft 3 to drive the stirring blades 4 to rotate. The high-speed rotation of the stirring blades 4 ensures that the descaling agent and clean water are fully and evenly mixed, ensuring that the composition of the cleaning solution is uniform and avoiding localized low or high concentrations of descaling agent. This more effectively dissolves scale and rust, improving the cleaning effect.

[0025] After the water and descaling agent are mixed evenly, when cleaning the wall-hung boiler, first connect the outlet hose 9 to the inlet pipe of the boiler through the first connector 10, and connect the return pipe 11 to the return pipe of the boiler through the second connector 12. Then, the circulation pump 7 operates to draw the cleaning solution mixed with descaling agent through the pump pipe 8 and flow into the inlet pipe through the outlet hose 9, and then into the interior of the boiler. The cleaning solution circulates inside the boiler, dissolving scale, rust, and other dirt, thus achieving the cleaning purpose.

[0026] During the cleaning process, the water containing dirt will flow back into the water tank 1 through the return water pipe 11. Before flowing back into the water tank 1, the water containing dirt will first pass through the filter screen 15. The filter screen 15 will intercept and filter the impurities in the wastewater, so that the wastewater without dirt and impurities will flow back into the water tank 1 through the return water pipe 11. This facilitates the recycling of water resources and saves water resources. The filtered clean water re-enters the circulation, avoiding the decrease in the concentration of the cleaning solution caused by the accumulation of impurities, ensuring the effect of subsequent cleaning, and preventing these impurities from entering the wall-hung boiler again to prevent secondary pollution.

[0027] Please see Figure 3-7 As shown, a filter box 13 is connected to the return water pipe 11. Two fixing plates 14 are fixedly connected between the filter box 13 and the water tank 1. A filter screen 15 is installed inside the filter box 13. Two guide rods 16 are fixedly connected inside the filter box 13. A lifting plate 17 is slidably assembled on the two guide rods 16. A scraper 20 is installed on the lifting plate 17. A cavity pipe 21 is fixed on the bottom side wall of the scraper 20. Multiple nozzles 22 are connected to the cavity pipe 21. An air pump 23 is installed on the top side of the filter box 13. An air inlet pipe 25 is connected to the input port of the air pump 23. An air pipe channel 24 is connected to the output port of the air pump 23. The other end of the air pipe channel 24 is connected to the cavity pipe 21. A threaded rod 18 is rotatably installed inside the filter box 13. The threaded rod 18 is located between the two guide rods 16 and passes through the lifting plate 17. A second motor 19 is installed on the top side of the filter box 13. The output end of the second motor 19 is connected to the threaded rod 17. One end of the rod 18 is connected; during operation, in order to avoid clogging of the filter screen 15, it needs to be cleaned regularly. The second motor 19 operates to make the threaded rod 18 rotate. With the cooperation of the guide rod 16, the lifting plate 17 moves down stably, and the scraper 20 moves along the surface of the filter screen 15, thereby scraping and cleaning the impurities attached to the surface of the filter screen 15. At the same time, the air pump 23 is started, so that the gas flows into the cavity tube 21 through the air pipe channel 24. Finally, the high-pressure gas is sprayed onto the filter screen 15 through the nozzle 22. The high-pressure gas can penetrate into the filter holes and blow out the small impurities that are difficult to scrape out, effectively solving the problem of difficult cleaning inside the filter holes and achieving a comprehensive and thorough cleaning of the filter screen 15. This combination of mechanical scraping and air blowing can more thoroughly clean the filter screen 15, avoid impurity residue, and improve the cleaning effect.

[0028] The bottom side of the filter box 13 is provided with a discharge port. Both sides of the discharge port are equipped with limit slide rails 26. The two limit slide rails 26 are slidably fitted with a sealing cover plate 27. A drain pipe 28 is connected to the bottom side of the filter box 13. When the device is in operation, the discharge port can be opened or closed as needed by the cooperation of the limit slide rails 26 and the sealing cover plate 27. The discharge port facilitates the removal of intercepted and scraped impurities. When the impurities blocking the filter holes are blown out by high pressure gas, the impurities blown out from the filter holes will be discharged through the drain pipe 28.

[0029] Working Principle: Existing wall-hung boiler cleaning devices result in water containing scale flowing directly into the storage tank after cleaning via a return pipe. As the cleaning process continues, the cleaning agent in the storage tank gradually becomes contaminated, reducing its ability to dissolve and remove scale, leading to poor cleaning results. Therefore, this invention addresses these issues by proposing a new cleaning device for wall-hung boilers. Before cleaning, clean water is first added to the water tank 1 through the water inlet pipe 5, and descaling agent is added to the water tank 1 through the feed pipe 6. Then, the first motor 2 is started, causing the rotating shaft 3 to drive the stirring blades 4 to rotate. The high-speed rotation of the stirring blades 4 ensures thorough and uniform mixing of the descaling agent and clean water, guaranteeing a consistent cleaning solution composition and preventing localized areas of excessively low or high descaling agent concentration. This more effectively dissolves scale and rust, improving the cleaning effect.

[0030] After the water and descaling agent are mixed evenly, when cleaning the wall-hung boiler, first connect the outlet hose 9 to the inlet pipe of the boiler through the first connector 10, and connect the return pipe 11 to the return pipe of the boiler through the second connector 12. Then, the circulation pump 7 operates to draw the cleaning solution mixed with descaling agent through the pump pipe 8 and flow into the inlet pipe through the outlet hose 9, and then into the interior of the boiler. The cleaning solution circulates inside the boiler, dissolving scale, rust, and other dirt, thus achieving the cleaning purpose.

[0031] During the cleaning process, the water containing dirt will flow back into the water tank 1 through the return water pipe 11. Before flowing back into the water tank 1, the water containing dirt will first pass through the filter screen 15. The filter screen 15 will intercept and filter the impurities in the wastewater, so that the wastewater without dirt and impurities will flow back into the water tank 1 through the return water pipe 11. This facilitates the recycling of water resources and saves water resources. The filtered clean water re-enters the circulation, avoiding the decrease in the concentration of the cleaning solution caused by the accumulation of impurities, ensuring the effect of subsequent cleaning, and preventing these impurities from entering the wall-hung boiler again to prevent secondary pollution.

[0032] To prevent the filter screen 15 from clogging, it needs to be cleaned regularly. The second motor 19 operates, causing the threaded rod 18 to rotate. With the assistance of the guide rod 16, the lifting plate 17 moves steadily downwards, causing the scraper 20 to move along the surface of the filter screen 15. This scrapes away impurities adhering to the surface of the filter screen 15. Simultaneously, the air pump 23 is activated, allowing air to flow into the cavity tube 21 through the air pipe channel 24. Finally, high-pressure gas is sprayed onto the filter screen 15 through the nozzle 22. The high-pressure gas can penetrate deep into the filter holes, blowing out the fine impurities that are difficult to scrape out, effectively solving the problem of cleaning the filter holes and achieving a thorough cleaning of the filter screen 15. This combination of mechanical scraping and air blowing can more thoroughly clean the filter screen 15, avoiding impurity residue and improving the cleaning effect.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cleaning device for a wall-hung boiler, characterized in that: The system includes a water tank (1), a first motor (2) mounted on the top of the water tank (1), a rotating shaft (3) connected to the output end of the first motor (2), and multiple stirring blades (4) fixed on the outer surface of the rotating shaft (3). A water injection pipe (5) and a feeding pipe (6) are connected to the top side of the water tank (1), and the water injection pipe (5) and the feeding pipe (6) are located on opposite sides of the first motor (2). A circulation pump (7) is mounted on one side wall of the water tank (1), a water pump (8) is connected to the input port of the circulation pump (7), and a water outlet hose (9) is connected to the output port of the circulation pump (7). A first connector (10) is provided at the other end of the water outlet hose (9). The other side wall of the water tank (1) is connected to... A return water pipe (11) is connected to the water tank (1), and a second connector (12) is provided at the other end of the return water pipe (11). A one-way valve is installed on the return water pipe (11), and a filter box (13) is connected to the return water pipe (11). Two fixing plates (14) are fixedly connected between the filter box (13) and the water tank (1). A filter screen plate (15) is provided inside the filter box (13). Two guide rods (16) are fixedly connected inside the filter box (13). A lifting plate (17) is slidably assembled with the two guide rods (16). A scraper (20) is installed on the lifting plate (17). A cavity tube (21) is fixed on the bottom side wall of the scraper (20). Multiple nozzles (22) are connected to the cavity tube (21).

2. A cleaning device for a wall-hung boiler according to claim 1, characterized in that: An air pump (23) is installed on the top side of the filter box (13). The input port of the air pump (23) is connected to an air inlet pipe (25), and the output port of the air pump (23) is connected to an air pipe channel (24). The other end of the air pipe channel (24) is connected to the cavity pipe (21).

3. The cleaning device for a wall-mounted furnace according to claim 1, characterized in that: A threaded rod (18) is rotatably installed inside the filter box (13), and the threaded rod (18) is located between two guide rods (16), and the threaded rod (18) passes through the lifting plate (17).

4. The cleaning device for a wall-mounted furnace according to claim 1, characterized by: A second motor (19) is installed on the top side of the filter box (13), and the output end of the second motor (19) is connected to one end of the threaded rod (18).

5. The cleaning device for a wall-hanging stove according to claim 1, characterized in that: The filter box (13) has a drain port on its bottom side. Limiting slide rails (26) are installed on both sides of the drain port. The two limiting slide rails (26) are fitted with a sealing cover plate (27). A drain pipe (28) is connected to one side of the bottom of the filter box (13).

6. The cleaning device for a wall-mounted furnace according to claim 1, characterized by: A control panel (29) is installed on the side wall of the water tank (1), and the control panel (29) is used to control the start and stop of the first motor (2), the circulating pump (7), the second motor (19) and the air pump (23).

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