Cleaning and descaling device of central hot water all-in-one machine

Abstract

The utility model discloses a central hot water all-in-one machine cleaning and descaling device which comprises a main vehicle, a circulating descaling mechanism, a rapid communication mechanism and a communication auxiliary mechanism. The circulating descaling mechanism comprises a circulating pump, a circulating pipe, a supporting column, an extending pipe and a water spraying assembly; the rapid communication mechanism comprises a clamping pipe, a clamping inner pipe, a transverse moving frame, a clamping groove, a rotating ring, a slope plate and a slope groove, through cooperation of the circulating pump and the water spraying assembly, circulating flowing of cleaning liquid in the to-be-cleaned all-in-one machine can be achieved, the water spraying function is combined, water scale and sediment in the hot water all-in-one machine are effectively removed, and the cleaning efficiency is improved; according to the cleaning device, all parts of the device can be rapidly disassembled, assembled and connected, the operation difficulty is reduced, time is saved, the stability of the connecting parts is guaranteed through the design of the rotating rings and the clamping grooves, loosening caused by vibration or external force is avoided, the flow direction of cleaning liquid can be flexibly adjusted through the multi-channel design of the structure, and the adaptability and operation flexibility of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning and descaling technology, and more specifically, it relates to a cleaning and descaling device for a central hot water unit. Background Technology

[0002] During the cleaning and descaling process, the cleaning fluid dissolves scale, impurities, and dirt inside the equipment, forming wastewater with high concentrations of chemical components and impurity particles. This wastewater contains corrosive substances, heavy metal ions, and other pollutants. If discharged directly without effective treatment, it will cause serious environmental pollution and even affect the ecological safety of surrounding water bodies and soil. However, most current cleaning devices lack effective means of treating wastewater. Wastewater is discharged directly after cleaning without filtration, purification, or recycling devices, which is environmentally unfriendly and may violate environmental regulations. Without a wastewater recycling module, the filtered cleaning fluid cannot be recycled and reused, resulting in waste of cleaning fluid and increased operating costs.

[0003] Existing devices mostly use traditional threaded joints or hose connections, which involve numerous and time-consuming steps. The connection process requires manual alignment of pipe openings and tightening of connecting components, increasing labor intensity and increasing the risk of leakage or loosening due to improper operation. Because the connection method lacks modular design, vibrations or fluctuations in cleaning fluid pressure can easily cause loosening or seal failure at the interfaces, leading to cleaning fluid leakage, affecting cleaning effectiveness and operational safety. Traditional connection methods also have poor adaptability to different models of integrated central hot water units, making it impossible to quickly replace components or adjust the connection method, thus limiting the equipment's versatility and applicability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a central hot water integrated unit cleaning and descaling device to solve the technical problems mentioned in the background art, such as the inability to effectively treat sewage, the inconvenience of connecting the circulating pump with the filter box assembly, the cleaning box assembly and the equipment to be cleaned, and the inconvenience of modular management.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a central hot water integrated unit cleaning and descaling device, comprising a main vehicle, a circulating descaling mechanism, a quick connection mechanism, and a connection auxiliary mechanism. The circulating descaling mechanism includes a circulating pump, a circulating pipe, a support column, an extension pipe, and a water spray assembly. The circulating pipe is installed at one end of the circulating pump, the extension pipe is installed at the other end of the circulating pump, and the water spray assembly is installed on the top end face of the main vehicle. The extension pipe can be wound around the support column, and the extension pipe and the water spray assembly can extend into the integrated unit to be cleaned for water pumping and spraying. The quick connection mechanism includes a clamping pipe, a clamping inner pipe, a transverse frame, a clamping groove, a rotating ring, a slope plate, and a slope groove. The clamping inner pipe can extend into the clamping pipe, the clamping groove is set on the side wall of the clamping inner pipe, the rotating ring is limited and rotated and installed on the outer wall of the clamping pipe, the slope groove is installed on the inner wall of the rotating ring, the transverse frame is laterally slidably and penetrates through the side wall of the clamping pipe, and the slope plate is installed at one end of the transverse frame.

[0008] The present invention is further configured such that the connecting auxiliary mechanism includes a bottom fixing plate, a fitting ring, a rotating block, a clamping block, and a tightening spring. The bottom fixing plate is fixedly installed on the bottom end of the outer wall of the clamping tube. Multiple sets of clamping blocks slide and press against the bottom fixing plate in a concentric manner. The tightening spring is installed between adjacent clamping blocks. The fitting ring is installed on the top and bottom of the rotating ring. The bottom of the bottom fitting ring is provided with a rotating block, and the inner wall of the clamping block contacts and supports the outer wall of the rotating block, so that the rotating ring and the fitting ring cooperate to support the rotation and lock the mechanism.

[0009] The present invention is further configured such that a mounting bracket is installed on the top end of the main vehicle, and the circulation pump is fixedly installed on the mounting bracket. The mounting bracket fixes the circulation pump and other core components, keeps the equipment structure stable, facilitates installation and maintenance, and improves operational stability.

[0010] The present invention is further configured such that a secondary vehicle is provided on the side of the main vehicle, and the secondary vehicle and the main vehicle are separately configured. A filter box assembly and a cleaning box assembly are installed on the top of the secondary vehicle. The separate design of the main vehicle and the secondary vehicle facilitates the separation and cooperation of functional modules and improves the flexibility of the equipment.

[0011] The present invention is further configured such that a T-junction is installed at one end of the circulation pipe, and a control valve is installed on the T-junction. Through the structural design of the T-junction, multiple channels can be connected, which facilitates the adjustment of the flow direction of the cleaning fluid and enables flexible cleaning operations.

[0012] The present invention is further configured such that the two ends of the tee are respectively connected to one end of the snap-fit ​​inner tube, and the control valve can control the flow at both ends of the tee. By controlling the flow at both ends of the tee, the circulation path of the cleaning fluid can be adjusted at any time, thereby improving the controllability and operational accuracy of the cleaning system.

[0013] The present invention is further configured such that one end of the card tube is connected to the filter box assembly and the cleaning box assembly, and the circulation pump is connected to the filter box assembly and the cleaning box assembly through the quick connection mechanism.

[0014] The present invention is further configured such that bottom wheels are installed around the bottom of the main vehicle and the auxiliary vehicle, and a push handle is installed on one side of the main vehicle. The bottom wheels and push handle are provided at the bottom, which facilitates the movement and operation of the equipment and improves the cleaning efficiency and the flexibility of equipment use.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a cleaning and descaling device for a central hot water unit, which has the following beneficial effects:

[0017] This utility model features a circulating descaling mechanism. Through the cooperation of a circulating pump and a water spray assembly, the cleaning solution can circulate within the integrated machine to be cleaned. Combined with the water spray function, it effectively removes scale and deposits from the hot water integrated machine, improving cleaning efficiency. The insertion pipe can be flexibly inserted into the equipment and can be wrapped around the support column, making it easy to adjust the length and operating range to meet the cleaning needs of different equipment. The integrated design of the water spray assembly and circulating pump reduces unnecessary operations, simplifies the cleaning process, and enhances the ease of use of the equipment.

[0018] This utility model is equipped with a quick-connection mechanism. Through the snap-fit ​​design, it can realize the quick disassembly and assembly and connection of various parts of the equipment, reduce the difficulty of operation, save time, and ensure the stability of the connecting parts by rotating ring and slot design, preventing loosening caused by vibration or external force and ensuring the stability of cleaning operation. Through the multi-channel design of the structure, the flow direction of the cleaning fluid can be flexibly adjusted, improving the adaptability and operational flexibility of the equipment.

[0019] This utility model is equipped with a connecting auxiliary mechanism. The fit ring and clamping block are designed to provide a reliable sealing effect, preventing leakage during the cleaning process and ensuring operational safety. The tightening spring design enables automatic clamping and locking, reducing the tedious steps of manual adjustment and improving operational efficiency. The connecting auxiliary mechanism provides stable support when rotating and locking, ensuring the firmness of the connection and further improving the stability of the equipment operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the device in this utility model from a side view;

[0022] Figure 3 This is a schematic diagram of the structure of the main body of the auxiliary vehicle in this utility model;

[0023] Figure 4 This is a schematic diagram of the rapid connection mechanism and the connection auxiliary mechanism in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the rapid connection mechanism and the connection auxiliary mechanism in this utility model.

[0025] In the diagram: 1. Main vehicle; 2. Circulation pump; 3. Circulation pipe; 4. Support column; 5. Insertion pipe; 6. Water spray assembly; 7. Snap-fit ​​inner pipe; 8. Transverse frame; 9. Slot; 10. Rotating ring; 11. Slope plate; 12. Slope groove; 13. Bottom fixing plate; 14. Fitting ring; 15. Rotating block; 16. Clamping block; 17. Tensioning spring; 18. Mounting bracket; 19. Sub-vehicle; 20. Filter box assembly; 21. Cleaning box assembly; 22. T-joint; 23. Control valve; 24. Bottom wheel; 25. Push handle; 101. Snap-fit ​​pipe. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5A central hot water unit cleaning and descaling device includes a main vehicle 1, a circulating descaling mechanism, a quick-connection mechanism, and a connecting auxiliary mechanism. The circulating descaling mechanism includes a circulating pump 2, a circulating pipe 3, a support column 4, an insertion pipe 5, and a water spray assembly 6. The circulating pipe 3 is installed at one end of the circulating pump 2, the insertion pipe 5 is installed at the other end of the circulating pump 2, and the water spray assembly 6 is installed on the top end face of the main vehicle 1. The insertion pipe 5 can be wound around the support column 4, and the insertion pipe 5 and the water spray assembly 6 can extend into the unit to be cleaned for water pumping and descaling. The water spray system and quick-connect mechanism include a snap-fit ​​pipe 101, a snap-fit ​​inner pipe 7, a transverse frame 8, a snap-fit ​​groove 9, a rotating ring 10, a slope plate 11, and a slope groove 12. The snap-fit ​​inner pipe 7 can extend into the snap-fit ​​pipe 101. The snap-fit ​​groove 9 is located on the side wall of the snap-fit ​​inner pipe 7. The rotating ring 10 is mounted on the outer wall of the snap-fit ​​pipe 101 for limited rotation. The slope groove 12 is mounted on the inner wall of the rotating ring 10. The transverse frame 8 is laterally slidably mounted through the side wall of the snap-fit ​​pipe 101. The slope plate 11 is mounted on one end of the transverse frame 8.

[0030] In this embodiment, the circulation pump 2 is the core power source for the entire cleaning and descaling process. Driven by electricity, the circulation pump 2 continuously circulates the descaling solution in the circulation pipe 3. The circulation pump 2 draws cleaning solution from the cleaning tank assembly 21 and delivers it to the central hot water unit to be cleaned through the circulation pipe 3. When not in use, the insertion pipe 5 unfolds from the wound support column 4 and extends into the unit for cleaning. After use, it can be wound back onto the support column 4 for easy storage. The water spray assembly 6 is installed at the top of the main vehicle 1 and is used for high-pressure spraying of the descaling solution to rinse away scale and impurities adhering to the inside of the equipment. After removing the water spray assembly 6, the circulation pump 2 is reversed to extract the cleaning solution and transport it to the filter box assembly 20. The quick-connect mechanism is used to achieve quick connection and sealing between the device and the equipment to be cleaned, enabling modular management. The snap-fit ​​inner pipe 7 can be inserted into the snap-fit... Inside pipe 101, the two work together to achieve rapid connection of the pipeline. The slot 9 is designed on the side wall of the inner pipe 7 and can be firmly fixed by mechanical buckle. The rotating ring 10 is limited and installed on the outer wall of the clamping pipe 101. Its inner wall is provided with a slope groove 12. When the rotating ring 10 rotates, the slope groove 12 drives the transverse frame 8 to slide. One end of the transverse frame 8 is connected to the slope plate 11. The transverse sliding of the transverse frame 8 will push the slope plate 11 to fit tightly with the slot 9 to achieve rapid fixation. The transverse frame 8 can slide laterally through the side wall of the clamping pipe 101. When the device is docked, the sliding of the transverse frame 8 will achieve rapid sealing connection of the pipeline. Through the rapid connection mechanism, the device can quickly connect the circulating pump 2 with the filter box assembly 20, the cleaning box assembly 21 and the equipment to be cleaned, reducing the complexity of operation and improving the cleaning efficiency.

[0031] The connecting auxiliary mechanism includes a bottom plate 13, a fitting ring 14, a rotating block 15, a clamping block 16, and a tightening spring 17. The bottom plate 13 is fixedly installed on the bottom of the outer wall of the clamping tube 101. Multiple sets of clamping blocks 16 slide concentrically and press against the bottom plate 13. The tightening spring 17 is installed between adjacent clamping blocks 16. The fitting ring 14 is installed on the top and bottom of the rotating ring 10. The bottom of the bottom fitting ring 14 is provided with a rotating block 15, and the inner wall of the clamping block 16 contacts and supports the outer wall of the rotating block 15, so that the rotating ring 10 and the fitting ring 14 cooperate to support the rotation and lock the mechanism.

[0032] In this embodiment, multiple sets of clamping blocks 16 are slidably mounted on the base plate 13. The sliding of the clamping blocks 16 can clamp the outside of the clamping pipe 101 and cooperate with the rotating block 15 to achieve a stable connection. A tensioning spring 17 is installed between each set of clamping blocks 16. The tensioning spring 17 provides elastic tension to ensure that the clamping blocks 16 can always be in a clamped state. The fitting rings 14 are respectively installed on the top and bottom of the rotating ring 10 to provide additional support for the connecting parts. The fitting rings 14 cooperate with the rotating ring 10 to realize the rotational locking setting of the device during the connection process. The rotating block 15 is installed on the bottom of the fitting ring 14 and contacts the inner wall of the clamping block 16 for support, forming a stable support point. This structure makes it difficult to loosen during the connection process, ensuring the sealing and reliability of the circulation system during operation. Through the connecting auxiliary mechanism, the quick connection of the pipeline can further enhance the stability and avoid loosening or leakage caused by vibration or pressure during the cleaning process.

[0033] Please see Figures 1-5 As a supplementary embodiment of a central hot water integrated unit cleaning and descaling device for the circulating descaling mechanism, quick connection mechanism, and connection auxiliary mechanism: A mounting bracket 18 is installed on the top of the main vehicle 1, and the circulating pump 2 is fixedly installed on the mounting bracket 18. A secondary vehicle 19 is provided on the side of the main vehicle 1, and the secondary vehicle 19 and the main vehicle 1 are set separately. A filter box assembly 20 and a cleaning box assembly 21 are installed on the top of the secondary vehicle 19. A tee 22 is installed at one end of the circulating pipe 3. A control valve 23 is installed on the tee 22. The two ends of the tee 22 are respectively connected to one end of the snap-fit ​​inner pipe 7. The control valve 23 can control the flow at both ends of the tee 22. One end of the snap-fit ​​pipe 101 is connected to the filter box assembly 20 and the cleaning box assembly 21. The circulating pump 2 is connected to the filter box assembly 20 and the cleaning box assembly 21 through the quick connection mechanism. Bottom wheels 24 are installed around the bottom of the main vehicle 1 and the secondary vehicle 19, and a push handle 25 is installed on the side of one end of the main vehicle 1.

[0034] More specifically, the main vehicle 1 and auxiliary vehicle 19 are moved to the vicinity of the central hot water unit to be cleaned. The main vehicle 1 and auxiliary vehicle 19 move flexibly via the bottom wheels 24, and the push handle 25 provides a convenient pushing method. A quick-connect mechanism is used to connect the circulation pump 2 to the cleaning tank assembly 21, the filter box assembly 20, and the equipment to be cleaned. The snap-fit ​​inner pipe 7 and snap-fit ​​pipe 101 complete the quick connection. The transverse frame 8 and the rotating ring 10 cooperate to achieve a secure connection. The connecting auxiliary mechanism further enhances sealing and stability through the clamping block 16 and the fitting ring 14. A descaling agent solution is injected into the cleaning tank assembly 21, and the circulation pump 2 is started, thus cleaning... The cleaning fluid is transported to the inside of the equipment to be cleaned through the circulation pipe 3 and the insertion pipe 5. The water spray assembly 6 is activated to perform high-pressure rinsing of the inside of the equipment. After the water spray assembly 6 is removed, the cleaning fluid is transported in reverse through the insertion pipe 5. After filtering out dissolved scale and impurities, it re-enters the circulation system. The control valve 23 and the three-way valve 22 in the circulation pipe 3 work together to control the flow direction and circulation process of the cleaning fluid. After cleaning is completed, the circulation pump 2 is stopped, and the cleaning fluid flows back to the filter box assembly 20. The quick-connect mechanism is disassembled, the insertion pipe 5 is removed and retracted to the support column 4, and the main vehicle 1 and the auxiliary vehicle 19 move to the cleaning fluid treatment area to treat or recycle the cleaning fluid.

[0035] In summary, during the use or operation of the overall equipment: When the descaling mechanism needs to be activated, the circulation pump 2 is the core power source for the entire cleaning and descaling process. Driven by electricity, the circulation pump 2 continuously circulates the descaling solution in the circulation pipe 3. The circulation pump 2 draws cleaning solution from the cleaning tank assembly 21 and delivers it to the central hot water unit to be cleaned through the circulation pipe 3. When not in use, the insertion pipe 5 unfolds from the winding support 4 and extends into the unit for cleaning. After use, it can be wound back onto the support 4 for easy storage. The water spray assembly 6 is installed at the top of the main vehicle 1 and is used for high-pressure spraying of the descaling solution to rinse away scale and impurities adhering to the inside of the equipment. After removing the water spray assembly 6, the circulation pump 2 is reversed to extract the cleaning solution and transport it to the filter box assembly 20. When the quick connection mechanism is required, it is used to achieve rapid connection and sealing between the device and the equipment to be cleaned, enabling modular management. The snap-fit ​​inner tube 7 can be inserted into the snap-fit ​​tube 101, and the quick connection of the pipeline is achieved through the cooperation of the two. The snap-fit ​​groove 9 is designed on the side wall of the snap-fit ​​inner tube 7, which can achieve firm fixation through mechanical buckling. The rotating ring 10 is limited and installed on the outer wall of the snap-fit ​​tube 101, and its inner wall is provided with a slope groove 12. When the rotating ring 10 rotates, the slope groove 12 drives the transverse frame 8 to slide. One end of the transverse frame 8 is connected to the slope plate 11. The transverse sliding of the transverse frame 8 will push the slope plate 11 to fit tightly with the snap-fit ​​groove 9, achieving rapid fixation. The transverse frame 8 can slide laterally through the side wall of the snap-fit ​​tube 101. When the device is docked, the rapid sealing connection of the pipeline is achieved by the sliding push of the transverse frame 8. Through the quick connection mechanism, the device can quickly connect the circulating pump 2 with the filter box assembly 20, the cleaning box assembly 21 and the equipment to be cleaned, reducing the complexity of operation and improving cleaning efficiency. When the auxiliary mechanism needs to be connected, multiple sets of clamping blocks 16 are slidably mounted on the base plate 13. The sliding of the clamping blocks 16 can clamp the outside of the clamping pipe 101 and cooperate with the rotating block 15 to achieve a stable connection. A tensioning spring 17 is installed between each set of clamping blocks 16. The tensioning spring 17 provides elastic tension to ensure that the clamping blocks 16 can always be in a clamped state. The fitting rings 14 are respectively installed on the top and bottom of the rotating ring 10 to provide additional support for the connecting parts. The fitting rings 14 cooperate with the rotating ring 10 to realize the rotational locking setting of the device during the connection process. The rotating block 15 is installed at the bottom of the fitting ring 14 and contacts the inner wall of the clamping block 16 for support, forming a stable support point. This structure makes it difficult to loosen during the connection process, ensuring the sealing and reliability of the circulation system during operation. Through the auxiliary mechanism, the quick connection of the pipeline can further enhance stability and avoid loosening or leakage caused by vibration or pressure during the cleaning process.

[0036] The main vehicle 1 and auxiliary vehicle 19 are moved to the vicinity of the central hot water unit to be cleaned. The main vehicle 1 and auxiliary vehicle 19 move flexibly via the bottom wheels 24, and the push handle 25 provides a convenient pushing method. A quick-connect mechanism is used to connect the circulation pump 2 to the cleaning tank assembly 21, the filter assembly 20, and the equipment to be cleaned. The snap-fit ​​inner pipe 7 and snap-fit ​​pipe 101 complete the quick connection. The transverse frame 8 and the rotating ring 10 cooperate to achieve a secure connection. The connecting auxiliary mechanism further enhances sealing and stability through the clamping block 16 and the fitting ring 14. A descaling agent solution is injected into the cleaning tank assembly 21, and the circulation pump 2 starts, distributing the cleaning fluid through... The circulation pipe 3 and the insertion pipe 5 deliver the cleaning fluid to the inside of the equipment to be cleaned. The water spray assembly 6 is activated to perform high-pressure rinsing of the inside of the equipment. The water spray assembly 6 is then removed, and the cleaning fluid is transported in reverse through the insertion pipe 5. After filtering out dissolved scale and impurities, the cleaning fluid re-enters the circulation system. The control valve 23 and the three-way valve 22 in the circulation pipe 3 work together to control the flow direction and circulation process of the cleaning fluid. After cleaning is completed, the circulation pump 2 is stopped, and the cleaning fluid flows back to the filter box assembly 20. The quick-connect mechanism is then disassembled, the insertion pipe 5 is removed and retracted onto the support column 4, and the main vehicle 1 and the auxiliary vehicle 19 move to the cleaning fluid treatment area to treat or recycle the cleaning fluid.

[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A central hot water integrated unit cleaning and descaling device, comprising a main vehicle (1), a circulating descaling mechanism, a rapid connection mechanism, and a connection auxiliary mechanism, characterized in that: The circulating descaling mechanism includes a circulating pump (2), a circulating pipe (3), a support column (4), an insertion pipe (5), and a water spray assembly (6). The circulating pipe (3) is installed at one end of the circulating pump (2), the insertion pipe (5) is installed at the other end of the circulating pump (2), and the water spray assembly (6) is installed on the top end face of the main vehicle (1). The insertion pipe (5) can be wound around the support column (4), and the insertion pipe (5) and the water spray assembly (6) can be inserted into the cleaning unit for water pumping and spraying. The quick connection mechanism includes a snap-fit ​​pipe (101) and a snap-fit ​​connector. The inner tube (7), the transverse frame (8), the slot (9), the rotating ring (10), the slope plate (11) and the slope groove (12) are connected. The inner tube (7) can be inserted into the connecting tube (101). The slot (9) is set on the side wall of the inner tube (7). The rotating ring (10) is limited to rotating and installed on the outer wall of the connecting tube (101). The slope groove (12) is installed on the inner wall of the rotating ring (10). The transverse frame (8) is laterally slidably and is installed through the side wall of the connecting tube (101). The slope plate (11) is installed at one end of the transverse frame (8).

2. The cleaning and descaling device for a central hot water integrated unit according to claim 1, characterized in that: The connecting auxiliary mechanism includes a bottom plate (13), a fitting ring (14), a rotating block (15), a clamping block (16), and a tightening spring (17). The bottom plate (13) is fixedly installed on the bottom of the outer wall of the clamping tube (101). Multiple sets of clamping blocks (16) slide and press against the bottom plate (13) in a concentric manner. The tightening spring (17) is installed between adjacent clamping blocks (16). The fitting ring (14) is installed on the top and bottom of the rotating ring (10). The bottom of the bottom fitting ring (14) is equipped with a rotating block (15), and the inner wall of the clamping block (16) contacts and supports the outer wall of the rotating block (15), so that the rotating ring (10) and the fitting ring (14) cooperate to support the rotation and lock the mechanism.

3. The cleaning and descaling device for a central hot water unit according to claim 1, characterized in that: The top end of the main vehicle (1) is equipped with a mounting bracket (18), and the circulation pump (2) is fixedly installed on the mounting bracket (18).

4. The cleaning and descaling device for a central hot water unit according to claim 1, characterized in that: The main vehicle (1) has a sub-vehicle (19) on its side, and the sub-vehicle (19) and the main vehicle (1) are set separately. The top end of the sub-vehicle (19) is equipped with a filter box assembly (20) and a cleaning box assembly (21).

5. The cleaning and descaling device for a central hot water unit according to claim 1, characterized in that: One end of the circulation pipe (3) is equipped with a tee (22), and a control valve (23) is installed on the tee (22).

6. The cleaning and descaling device for a central hot water unit according to claim 5, characterized in that: The two ends of the tee (22) are respectively connected to one end of the snap-fit ​​inner tube (7), and the control valve (23) can control the flow at both ends of the tee (22).

7. The cleaning and descaling device for a central hot water unit according to claim 1, characterized in that: One end of the card connector (101) is connected to the filter box assembly (20) and the cleaning box assembly (21) and the circulation pump (2) is connected to the filter box assembly (20) and the cleaning box assembly (21) through the quick connection mechanism.

8. The cleaning and descaling device for a central hot water unit according to claim 4, characterized in that: Bottom wheels (24) are installed around the bottom of the main vehicle (1) and the auxiliary vehicle (19), and a push handle (25) is installed on one side of the main vehicle (1).

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