Pipeline scale removing device for warm water and hot water furnace

Abstract

The invention belongs to the technical field of pipeline cleaning, and particularly relates to a pipeline scale removing device for a warm water heater, which comprises a pipe body, and a self-adaptive guide mechanism, a liquid spraying assembly, a cleaning mechanism and a propelling mechanism are sequentially arranged on the pipe body from front to back; the self-adaptive guide mechanism is arranged in the pipeline and used for adapting to pipelines with different pipe diameters, the liquid spraying assembly is used for spraying liquid medicine or liquid to the inner wall of the pipeline, the cleaning mechanism is used for removing scale on the inner wall of the pipeline, and the propelling mechanism is used for enabling the pipeline scale removing device to move in the pipeline; the cleaning mechanism comprises a cleaning assembly, a coupling piece and a driving assembly, the cleaning assembly is arranged on the outer wall of the pipeline, the driving assembly is arranged in the pipe body, and the driving assembly is in transmission fit with the cleaning assembly through the coupling piece. According to the device, automatic advancing, rotary cleaning and liquid medicine spraying of the device in a pipeline are achieved, descaling operation is completed at a time, the cleaning efficiency is remarkably improved, and the labor cost and the labor intensity are reduced.

Description

Technical Field

[0001] This invention belongs to the field of pipe cleaning technology, and particularly relates to a pipe scale removal device for hot water boilers. Background Technology

[0002] During long-term operation, scale often accumulates on the inner walls of the metal pipes in hot water boilers due to water quality. This scale not only reduces the effective flow area of ​​the pipes, weakens heat transfer efficiency, and increases energy consumption, but can also cause blockages, affecting system stability and posing safety hazards. Under current technology, when scale buildup is severe, manual cleaning is typically used, involving repeatedly scraping the pipes with round brushes of varying sizes. This method is not only time-consuming and labor-intensive, but also significantly increases the workload for workers.

[0003] Therefore, a scale removal device for pipes of hot water boilers is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe scale removal device for hot water boilers to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a pipe scale removal device for a hot water boiler, comprising a pipe body, on which an adaptive guiding mechanism, a spraying assembly, a cleaning mechanism, and a propulsion mechanism are sequentially arranged from front to back. The adaptive guiding mechanism is disposed inside the pipe to adapt to pipes of different diameters. The spraying assembly is used to spray a chemical solution or liquid onto the inner wall of the pipe. The cleaning mechanism is used to remove scale from the inner wall of the pipe. The propulsion mechanism is used to move the pipe scale removal device within the pipe. The cleaning mechanism includes a cleaning assembly, a coupling element, and a driving assembly. The cleaning assembly is disposed on the outer wall of the pipe, and the driving assembly is disposed inside the pipe body. The driving assembly is in transmission cooperation with the cleaning assembly through the coupling element.

[0006] Preferably, the cleaning assembly includes a slip ring rotatably sleeved on the outer wall of the pipe, and a plurality of elastic elements are evenly spaced along the circumference of the slip ring. The telescopic ends of the elastic elements are connected to a brush, which is used to remove scale from the inner wall of the pipe.

[0007] Preferably, the drive assembly includes a rotating rod coaxially rotatably connected to the tube body, with multiple blades evenly spaced along the upper circumferential direction of the rotating rod, and a high-pressure water source connected to the end of the tube body away from the adaptive guide mechanism, so as to drive the blades to rotate the rotating rod through the high-pressure fluid.

[0008] Preferably, the coupling element includes a plurality of first strong magnets that are equally spaced and embedded in the slip ring, with the magnetic poles of the plurality of first strong magnets being alternately arranged; and a plurality of second strong magnets are equally spaced along the circumferential direction on the rotating rod, with the magnetic poles of the plurality of second strong magnets being alternately arranged.

[0009] Preferably, the adaptive guiding mechanism includes a conical head, a collar rotatably sleeved on the outer wall of the conical head, a plurality of supports hinged at equal intervals on the collar, a pressure roller rotatably connected to the supports, and a second spring elastically connected between the supports and the collar, so that the pressure roller makes frictional contact with the inner wall of the pipe.

[0010] Preferably, the tube body is elastically connected to the conical head via a first spring.

[0011] Preferably, the spraying assembly includes a plurality of nozzles disposed on the outer wall of the conical head, the plurality of nozzles being equally spaced along the circumference of the conical head, the interior of the conical head being provided with a liquid storage chamber, the liquid storage chamber being connected to the interior of the tube body through an elastic tube and a plurality of through holes on the tube body, and the first spring being sleeved on the outside of the elastic tube.

[0012] Preferably, a pressurizing tank is provided on the pipe body, the pressurizing tank has an oval structure, and the blade is located at the transition connection between the pressurizing tank and the pipe body.

[0013] Preferably, the propulsion mechanism includes a sealing seat, which is fixedly connected to the end of the pipe by a plurality of fastening bolts. A sealing gasket is provided between the sealing seat and the end of the pipe. A water supply pipe of the same diameter is connected to the end of the pipe body. The water supply pipe passes through the middle of the sealing seat and is slidably sealed to the sealing gasket. A piston body is fixedly sleeved on the pipe body. The piston body is slidably sealed to the inner wall of the pipe. A water injection cavity is formed between the piston body, the pipe and the sealing seat. A plurality of water inlet pipes are connected to the sealing seat and are connected to the water injection cavity.

[0014] Preferably, the elastic element includes sleeves evenly spaced along the circumferential direction of the outer wall of the slip ring, a sliding rod is slidably connected inside the sleeve, one end of the sliding rod away from the sleeve is fixedly connected to the brush plate of the brush, a third spring is slidably sleeved on the sliding rod, one end of the third spring abuts against the sleeve, and the other end of the third spring abuts against the brush plate of the brush.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: The adaptive guiding mechanism allows the device to adapt to pipes of different inner diameters, ensuring stable operation with the device centered within the pipe. The cleaning mechanism's brushes, under the action of elastic elements, remain firmly against the inner wall of the pipe, and in conjunction with rotational motion, can scrape away scale from all areas without leaving any blind spots, resulting in a comprehensive and uniform cleaning effect.

[0016] The drive assembly of the cleaning mechanism achieves non-contact transmission with the outer cleaning assembly via a coupling element. This design eliminates the need for mechanical seals to penetrate the pipe body, effectively solving the sealing problem of rotational power in high-pressure water environments, simplifying the structure, and improving the reliability and durability of the device.

[0017] The propulsion mechanism in this invention utilizes the pressure difference created by the injection of high-pressure water to propel the device forward.

[0018] This invention, by setting up an adaptive guiding mechanism, a spraying component, a cleaning mechanism, and a propulsion mechanism, realizes the automatic forward movement, rotational cleaning, and liquid spraying of the device in the pipeline, completing the descaling operation in one go, significantly improving cleaning efficiency and reducing labor costs and labor intensity. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the pipe scale removal device proposed in this invention; Figure 2 This is a partial cross-sectional schematic diagram of the pipe scale removal device proposed in this invention; Figure 3 for Figure 2 A magnified view of point A in the image; The components are as follows: 1. Fastening bolt; 2. Sealing seat; 3. Sealing gasket; 4. Pipe body; 5. Water inlet pipe; 6. Pressurized tank body; 7. Pipeline; 8. Blade; 9. Rotating rod; 10. Piston body; 11. First spring; 12. Nozzle; 13. Support; 14. Pressure roller; 15. Conical head; 16. Collar; 17. Second spring; 18. Sleeve; 19. Sliding rod; 20. Third spring; 21. Brush; 22. First strong magnet; 23. Second strong magnet; 24. Through hole; 25. Slip ring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1 to 3 As shown, the present invention provides a pipe scale removal device for a hot water boiler, comprising a pipe body 4, on which an adaptive guiding mechanism, a spraying component, a cleaning mechanism, and a propulsion mechanism are arranged sequentially from front to back; the adaptive guiding mechanism is disposed inside the pipe 7 to adapt to pipes 7 of different diameters; the spraying component is used to spray a chemical solution or liquid onto the inner wall of the pipe 7; the cleaning mechanism is used to remove scale from the inner wall of the pipe 7; and the propulsion mechanism is used to move the pipe scale removal device within the pipe 7; the cleaning mechanism includes a cleaning component, a coupling component, and a driving component; the cleaning component is disposed on the outer wall of the pipe 7, and the driving component is disposed inside the pipe body 4; the driving component is in transmission cooperation with the cleaning component through the coupling component.

[0023] Pipe body 4 serves as the main structure of the entire pipe scale removal device, providing the installation foundation and support for other mechanisms and components, enabling the various parts to be combined in an orderly manner and work together.

[0024] The adaptive guidance mechanism is configured inside the pipe 7, which can adapt to pipes 7 of different diameters, ensuring that the device can operate stably in pipes of different specifications, and improving the versatility and applicability of the device.

[0025] The spraying assembly is used to spray chemicals or liquids onto the inner wall of pipe 7, which can pre-treat the inner wall of pipe 7, such as softening scale, and then use clean water for high-pressure rinsing, creating favorable conditions for the subsequent cleaning mechanism to remove scale and improving the cleaning effect.

[0026] The cleaning mechanism is used to remove scale from the inner wall of pipe 7. It is the core functional part of the device, directly removing scale from the inner wall of the pipe, ensuring the cleanliness of the inner wall of the pipe, and restoring the flow capacity of the pipe.

[0027] The propulsion mechanism is used to move the pipe scale removal device inside pipe 7, enabling the device to move along the pipe axis, thereby performing a comprehensive scale removal operation on the entire inner wall of the pipe.

[0028] The present invention places the cleaning component on the outer wall of the pipe body 4 to directly act on the scale, and the driving component is placed inside the pipe body 4 to provide power. The power is transmitted through the coupling component, making the device compact and reasonable in layout, and effectively transmitting power to the cleaning component to remove scale.

[0029] Furthermore, the cleaning component includes a slip ring 25 that is rotatably sleeved on the outer wall of the pipe body 4. Multiple elastic elements are evenly spaced along the circumference of the slip ring 25. The telescopic ends of the elastic elements are connected to brushes 21, which are used to remove scale from the inner wall of the pipe 7.

[0030] The rotation of the slip ring 25 drives the elastic element and the brush 21 to rotate. The elastic element enables the brush 21 to make close contact with the inner wall of the pipe 7, ensuring that the brush 21 can effectively remove scale even with different pipe diameters or uneven inner walls, thus improving the comprehensiveness and effectiveness of cleaning.

[0031] Furthermore, the drive assembly includes a rotating rod 9 coaxially rotatably connected inside the tube body 4. Multiple blades 8 are circumferentially and evenly connected along the upper edge of the rotating rod 9. A high-pressure water source is connected to the end of the tube body 4 away from the adaptive guide mechanism, so that the blades 8 can be driven by the high-pressure fluid to drive the rotating rod 9 to rotate.

[0032] The high-pressure water source generates fluid power to drive the blade 8, which in turn drives the rotating rod 9 to rotate, providing rotational power for the cleaning component. No additional power source is required, the structure is simple, the energy utilization is efficient, and the rotational speed of the rotating rod 9 can be adjusted according to the pressure and flow rate of the high-pressure water source.

[0033] Furthermore, the coupling element includes a plurality of first strong magnets 22 that are equally spaced and embedded in the slip ring 25, with the magnetic poles of the plurality of first strong magnets 22 being arranged alternately; a plurality of second strong magnets 23 are equally spaced along the circumferential direction on the rotating rod 9, with the magnetic poles of the plurality of second strong magnets 23 being arranged alternately.

[0034] Non-contact transmission between the rotating rod 9 and the slip ring 25 is achieved through the magnetic force between the first strong magnet 22 and the second strong magnet 23, avoiding wear problems in mechanical transmission, improving the reliability and service life of the transmission, and ensuring the smoothness of the transmission by alternating magnetic poles.

[0035] Furthermore, the adaptive guiding mechanism includes a conical head 15, a collar 16 rotatably sleeved on the outer wall of the conical head 15, a plurality of supports 13 hinged at equal intervals on the collar 16, a pressure roller 14 rotatably connected to the support 13, and a second spring 17 elastically connected between the support 13 and the collar 16 so that the pressure roller 14 makes frictional contact with the inner wall of the pipe 7.

[0036] The conical head 15 facilitates the entry of the device into the pipeline. The combined structure of the collar 16, the support 13, and the pressure roller 14, together with the elastic action of the second spring 17, enables the pressure roller 14 to automatically adjust its position according to the size of the inner diameter of the pipeline, and always maintain frictional contact with the inner wall of the pipeline 7. This provides guidance and support for the movement of the device in the pipeline, ensuring the stability of the device operation.

[0037] Furthermore, the tube body 4 is elastically connected to the conical head 15 via the first spring 11.

[0038] The first spring 11 acts as a buffer and adjuster. When the device enters the pipe or encounters unevenness in the inner wall of the pipe, it can absorb and release energy to reduce the impact on the device. At the same time, it ensures that the adaptive guide mechanism can better adapt to changes in the inner diameter of the pipe, so that the pressure roller 14 maintains a suitable contact force with the inner wall of the pipe.

[0039] Furthermore, the spraying assembly includes multiple nozzles 12 disposed on the outer wall of the conical head 15. The multiple nozzles 12 are equally spaced along the circumference of the conical head 15. A liquid storage chamber is disposed inside the conical head 15. The liquid storage chamber is connected to the inside of the tube body 4 through an elastic tube and multiple through holes 24 on the tube body 4. The first spring 11 is sleeved on the outside of the elastic tube.

[0040] Multiple nozzles 12, evenly spaced along the circumference, can uniformly spray medicine or liquid onto the inner wall of the pipe 7, ensuring the pretreatment effect; the liquid storage chamber is used to store medicine or liquid, and is connected to the inside of the pipe body 4 through the elastic tube and through hole 24, so as to realize the transportation of medicine or liquid; the first spring 11 is sleeved on the outside of the elastic tube, which protects the elastic tube and provides a certain constraint, while not affecting the normal operation of the elastic tube.

[0041] Furthermore, a pressurized tank 6 is provided on the pipe body 4. The pressurized tank 6 has an oval structure, and the blade 8 is located at the transition connection between the pressurized tank 6 and the pipe body 4.

[0042] The oval structure of the pressurized tank 6 facilitates the flow and accumulation of high-pressure fluid inside, which can further increase the pressure of the fluid on the blades 8, improve the rotation efficiency of the blades 8, and thus provide stronger power for the cleaning components and enhance the scale removal effect.

[0043] Furthermore, the propulsion mechanism includes a sealing seat 2, which is fixedly connected to the end of the pipe 7 by multiple fastening bolts 1. A sealing gasket 3 is provided at the end of the sealing seat 2 and the pipe 7. A water supply pipe of the same diameter is connected to the end of the pipe body 4. The water supply pipe passes through the middle of the sealing seat 2 and is slidably sealed to the sealing gasket 3. A piston body 10 is fixedly sleeved on the pipe body 4. The piston body 10 is slidably sealed to the inner wall of the pipe 7. A water injection cavity is formed between the piston body 10, the pipe 7 and the sealing seat 2. Multiple water inlet pipes 5 are connected to the sealing seat 2 and are connected to the water injection cavity.

[0044] The sealing seat 2 is fixedly connected to the end of the pipe 7 by the fastening bolt 1 to ensure the firmness of the connection between the device and the pipe; the sealing gasket 3 realizes the sliding seal between the water supply pipe and the sealing seat 2 to prevent water leakage; the piston body 10 slides and seals with the inner wall of the pipe 7 to form a water injection chamber. Water is injected into the water injection chamber through the water inlet pipe 5, and the water pressure is used to push the piston body 10 and the pipe body 4 to move in the pipe, thereby realizing the propulsion of the device. The structure is simple and reliable, and the propulsion force is easy to control.

[0045] Furthermore, the elastic element includes sleeves 18 that are evenly spaced along the outer wall of the slip ring 25. A sliding rod 19 is slidably and limitly connected inside the sleeve 18. One end of the sliding rod 19 away from the sleeve 18 is fixedly connected to the brush plate of the brush 21. A third spring 20 is slidably sleeved on the sliding rod 19. One end of the third spring 20 abuts against the sleeve 18, and the other end of the third spring 20 abuts against the brush plate of the brush 21.

[0046] The sliding limit connection between the sleeve 18 and the slide bar 19 provides guidance for the extension and retraction of the brush 21, ensuring the stability of the brush 21's movement; the third spring 20 provides elastic force, enabling the brush 21 to better adapt to the shape and unevenness of the pipe inner wall, always maintaining close contact with the pipe inner wall, and improving the effect and quality of scale removal.

[0047] The working principle of the scale removal device for pipes of hot water boilers provided by this invention is as follows: During operation, the entire device is first placed into the pipe 7 to be cleaned, and the sealing seat 2 is fixed to the end of the pipe 7 using the fastening bolts 1. An external high-pressure water source injects high-pressure water into the water injection chamber formed by the sealing seat 2, the pipe 7, and the piston body 10 through the water inlet pipe 5. The water pressure pushes the piston body 10, thereby moving the entire pipe body 4 and all components mounted on it deeper into the pipe 7; this is the function of the propulsion mechanism.

[0048] During the forward movement of the device, the adaptive guiding mechanism at the front end begins to work. When the bracket 13 and pressure roller 14 connected to the outer collar 16 of the conical head 15 through the second spring 17 encounter the inner wall of the pipe 7, they will automatically adjust the opening angle according to the pipe diameter, so that multiple pressure rollers 14 maintain frictional contact with the inner wall of the pipe 7, ensuring that the pipe body 4 moves stably and centrally within the pipe 7.

[0049] Meanwhile, high-pressure liquid (scale cleaner) from another source flows through the inside of the pipe 4, impacting the blades 8 in the drive assembly and causing the rotating rod 9 to rotate at high speed. The second powerful magnets 23, evenly spaced on the rotating rod 9, rotate accordingly. Through magnetic coupling, the rotating magnetic field of the rotating rod 9 drives multiple first powerful magnets 22 inside the slip ring 25, causing the slip ring 25 to rotate synchronously, thus achieving non-contact power transmission from the sealed inside of the pipe 4 to the external cleaning assembly.

[0050] When the slip ring 25 of the cleaning component rotates, it drives the multiple sleeves 18, slide rods 19, and brushes 21 arranged around it to rotate together. Under the elastic force of the third spring 20, the slide rods 19 drive the brushes 21, which can be steel wire brushes, to always be firmly pressed against the inner wall of the pipe 7. The high-speed rotating brushes 21 can effectively scrape off the scale adhering to the inner wall of the pipe 7.

[0051] The spraying components work synchronously. A portion of the high-pressure liquid inside the tube 4 enters the elastic tube through the through hole 24, and then enters the liquid storage chamber of the conical head 15 through the elastic tube. Under pressure, the liquid in the storage chamber is sprayed out from multiple nozzles 12 that are evenly spaced on the outer wall of the front conical head 15, spraying onto the inner wall area of ​​the pipe 7 to be cleaned, treating the scale first (the sprayed liquid can pre-wet and soften stubborn scale). Then, the liquid can be switched to water, and the treated scale can be high-pressure rinsed to improve the cleaning efficiency of the brush 21, and after cleaning, the loose scale residue is rinsed away to keep the working surface clean.

[0052] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A device for removing scale from pipes of a hot water boiler, characterized in that, The device includes a pipe body (4), on which an adaptive guiding mechanism, a spraying component, a cleaning mechanism, and a propulsion mechanism are arranged sequentially from front to back. The adaptive guiding mechanism is disposed inside the pipe (7) to adapt to pipes (7) of different diameters. The spraying component is used to spray medicine or liquid onto the inner wall of the pipe (7). The cleaning mechanism is used to remove scale from the inner wall of the pipe (7). The propulsion mechanism is used to move the scale removal device inside the pipe (7). The cleaning mechanism includes a cleaning component, a coupling component, and a driving component. The cleaning component is disposed on the outer wall of the pipe (7), and the driving component is disposed inside the pipe body (4). The driving component is driven by the cleaning component through the coupling component.

2. The scale removal device for pipes of a hot water boiler according to claim 1, characterized in that, The cleaning assembly includes a slip ring (25) rotatably sleeved on the outer wall of the pipe body (4). Multiple elastic elements are evenly spaced along the circumference of the slip ring (25). A brush (21) is connected to the telescopic end of the elastic element. The brush (21) is used to remove scale from the inner wall of the pipe (7).

3. The scale removal device for pipes of a hot water boiler according to claim 2, characterized in that, The drive assembly includes a rotating rod (9) coaxially rotatably connected inside the tube body (4). Multiple blades (8) are connected at equal intervals along the upper circumference of the rotating rod (9). A high-pressure water source is connected to one end of the tube body (4) away from the adaptive guide mechanism, so that the blades (8) are driven by the high-pressure fluid to drive the rotating rod (9) to rotate.

4. The scale removal device for pipes of a hot water boiler according to claim 3, characterized in that, The coupling element includes a plurality of first strong magnets (22) that are equally spaced and embedded in the slip ring (25), with the magnetic poles of the plurality of first strong magnets (22) being alternately arranged; a plurality of second strong magnets (23) are equally spaced along the circumferential direction on the rotating rod (9), with the magnetic poles of the plurality of second strong magnets (23) being alternately arranged.

5. The scale removal device for pipes of a hot water boiler according to claim 1, characterized in that, The adaptive guiding mechanism includes a conical head (15), on which a collar (16) is rotatably sleeved. Multiple supports (13) are hinged at equal intervals on the collar (16), and a pressure roller (14) is rotatably connected to the support (13). A second spring (17) is elastically connected between the support (13) and the collar (16) so that the pressure roller (14) makes frictional contact with the inner wall of the pipe (7).

6. The scale removal device for pipes of a hot water boiler according to claim 5, characterized in that, The tube (4) is elastically connected to the conical head (15) via a first spring (11).

7. The scale removal device for pipes of a hot water boiler according to claim 6, characterized in that, The spraying assembly includes a plurality of nozzles (12) disposed on the outer wall of the conical head (15). The plurality of nozzles (12) are equally spaced along the circumference of the conical head (15). The conical head (15) has a liquid storage chamber inside. The liquid storage chamber is connected to the inside of the tube body (4) through an elastic tube and a plurality of through holes (24) on the tube body (4). The first spring (11) is sleeved on the outside of the elastic tube.

8. The scale removal device for pipes of a hot water boiler according to claim 3, characterized in that, A pressurized tank (6) is provided on the tube (4). The pressurized tank (6) has an oval structure. The blade (8) is located at the transition connection between the pressurized tank (6) and the tube (4).

9. The scale removal device for pipes of a hot water boiler according to claim 1, characterized in that, The propulsion mechanism includes a sealing seat (2), which is fixedly connected to the end of the pipe (7) by multiple fastening bolts (1). A sealing gasket (3) is provided at the end of the sealing seat (2) and the pipe (7). A water supply pipe of the same diameter is connected to the end of the pipe body (4). The water supply pipe passes through the middle of the sealing seat (2) and is slidably sealed to the sealing gasket (3). A piston body (10) is fixedly sleeved on the pipe body (4). The piston body (10) is slidably sealed to the inner wall of the pipe (7). A water injection cavity is formed between the piston body (10), the pipe (7) and the sealing seat (2). Multiple water inlet pipes (5) are connected to the sealing seat (2). The water inlet pipes (5) are connected to the water injection cavity.

10. The scale removal device for pipes of a hot water boiler according to claim 2, characterized in that, The elastic element includes sleeves (18) evenly spaced along the outer wall of the slip ring (25). A sliding rod (19) is slidably and limitably connected inside the sleeve (18). One end of the sliding rod (19) away from the sleeve (18) is fixedly connected to the brush plate of the brush (21). A third spring (20) is slidably sleeved on the sliding rod (19). One end of the third spring (20) abuts against the sleeve (18), and the other end of the third spring (20) abuts against the brush plate of the brush (21).

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