Water inlet pipe cleaning device with scale inhibition function for electric water heater

Abstract

This utility model discloses a cleaning device for the inlet pipe of an electric water heater with scale inhibition function, relating to the field of electric water heater technology. The utility model includes an inlet pipe body, inside which a cleaning scraper is installed, and a magnet is fixedly connected to one side of the cleaning scraper. An adjustment mechanism is also installed inside the inlet pipe, comprising a fixed cylinder disposed inside the inlet pipe body, and a threaded rod rotatably connected to the top of the fixed cylinder. This utility model allows for flexible adjustment of the positions of the cleaning scraper, magnet, and filter screen according to different lengths of the inlet pipe body, ensuring thorough cleaning of the pipe wall to remove scale. It adapts to the needs of different models of electric water heaters, reducing customized production costs. The cleaning scraper and magnet work together to mechanically scrape away stubborn scale and adsorb metal particles, providing dual cleaning efficiency. The filter screen intercepts loose scale, preventing secondary deposition and extending the lifespan of the water heater.

Description

Technical Field

[0001] This utility model belongs to the field of electric water heater technology, and in particular relates to a cleaning device for the inlet pipe of an electric water heater with scale inhibition function. Background Technology

[0002] As a key component of electric water heaters, the inlet pipe is prone to limescale buildup when transporting hard water over long periods. Limescale accumulation not only reduces heat transfer efficiency and increases energy consumption, but can also clog pipes, affect water flow, and even shorten the lifespan of the water heater. Therefore, cleaning devices are used to remove limescale from the inside of the inlet pipe.

[0003] Existing inlet pipe cleaning devices primarily remove scale from the inside of the inlet pipe by mechanically scraping the pipe wall with a built-in rotating cleaning brush or scraper. Since the brush or scraper length is usually fixed, it cannot be flexibly adjusted to accommodate different inlet pipe lengths. In practical applications, the length of inlet pipes varies significantly between different models of electric water heaters. Manufacturers often need to customize dedicated cleaning devices for different pipe specifications, which not only increases production costs but also complicates inventory management, impacts supply chain efficiency, and, because the drive mechanism of the cleaning device is usually integrated inside the inlet pipe, it is constantly exposed to high temperatures, high pressures, and corrosive water environments, making it prone to malfunctions due to seal failure, short circuits, or mechanical wear. Furthermore, the built-in drive mechanism is difficult to repair; once damaged, it often requires complete replacement, increasing maintenance costs.

[0004] To address this issue, we provide a water inlet pipe cleaning device for electric water heaters with scale inhibition function. Utility Model Content

[0005] The purpose of this utility model is to provide a water inlet pipe cleaning device for electric water heaters with scale inhibition function. Through the cooperation of the adjustment mechanism and the drive mechanism, it solves the problems of existing water inlet pipe cleaning devices that cannot be adjusted according to needs during use and the built-in drive mechanism is easily damaged.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a cleaning device for the inlet pipe of an electric water heater with scale inhibition function. It includes an inlet pipe body, inside which a cleaning scraper is installed, and a magnet is fixedly connected to one side of the scraper. An adjustment mechanism is also installed inside the inlet pipe, comprising a fixed cylinder inside the inlet pipe body, a threaded rod rotatably connected to the top of the fixed cylinder, and a threaded sleeve threaded to the surface of the threaded rod. A driving mechanism is installed on one side of the inlet pipe body, comprising a support frame on one side of the inlet pipe body, a motor fixedly connected to the top of the support frame, a first gear fixedly connected to the output end of the motor, and a second gear meshing with one side of the first gear.

[0008] The present invention is further configured such that the adjusting mechanism includes a connecting frame fixedly connected to the bottom of the threaded sleeve rod, a fixing frame fixedly connected to one side of the threaded sleeve rod, and a filter screen fixedly connected to the bottom of the fixing frame.

[0009] The present invention is further configured such that the driving mechanism includes a movable frame fixedly connected to the top of the second gear, a movable ring fixedly connected to the surface of the movable frame, a sealing ring fixedly connected to the surface of the movable ring, and a limiting ring fixedly connected to one side of the support frame.

[0010] The present invention is further configured such that a fixing plate is fixedly connected to one side of the water inlet pipe body, and the top of the fixing plate is provided with an installation groove that is compatible with the support frame.

[0011] The present invention is further configured such that a fixing ring is fixedly connected to the bottom surface of the water inlet pipe body, and a threaded connecting ring is threadedly connected to the surface of the fixing ring.

[0012] The present invention is further configured such that an installation tube is movably connected to the top of the movable ring, a support rod is provided at the top of the limiting ring, a limiting block is fixedly connected to the bottom of the support rod, and the bottom of the limiting block is slidably connected to the limiting ring.

[0013] The present invention is further configured such that a slider is fixedly connected to one side of the threaded sleeve rod, and the slider is slidably connected to one side of the inside of the fixed cylinder.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model allows for flexible adjustment of the cleaning scraper, magnet, and filter screen positions based on the different lengths of the inlet pipe body through an adjustment mechanism. This ensures thorough cleaning of the pipe wall scale, adapts to the needs of different models of electric water heaters, and reduces customized production costs. The cleaning scraper and magnet work together to mechanically scrape away stubborn scale and adsorb metal particles, providing dual cleaning efficiency. The filter screen can intercept detached scale, prevent secondary deposition, and extend the service life of the water heater.

[0016] 2. This utility model uses a drive mechanism such as a motor and gear set located outside the water inlet pipe to avoid long-term contact with high-temperature and high-pressure water environments, reducing the risk of seal failure and mechanical wear. Maintenance does not require pipe disassembly, reducing maintenance costs. The connection to the water heater and tap water system can be quickly disconnected via a threaded connecting ring and installation pipe, allowing the entire device to be removed for cleaning the filter or replacing parts. Operation is simple. The sealing ring ensures a tight seal during the process, preventing leakage. The limiting block and limiting groove enhance operational stability, preventing component misalignment or jamming during cleaning.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a cleaning device for the inlet pipe of an electric water heater with scale inhibition function.

[0020] Figure 2 This is a cross-sectional view of the movable ring in a scale-inhibiting inlet pipe cleaning device for an electric water heater.

[0021] Figure 3 This is a cross-sectional view of the inlet pipe body in a scale-inhibiting cleaning device for an electric water heater.

[0022] Figure 4 This is a cross-sectional view of the fixed cylinder in a scale-inhibiting cleaning device for the inlet pipe of an electric water heater.

[0023] Figure 5 This is a cross-sectional view of a fixing plate in a water inlet pipe cleaning device for an electric water heater with scale inhibition function.

[0024] In the attached diagram: 1. Inlet pipe body; 2. Cleaning scraper; 3. Magnet; 4. Fixing cylinder; 5. Threaded rod; 6. Threaded sleeve rod; 7. Support frame; 8. Motor; 9. First gear; 10. Second gear; 11. Connecting frame; 12. Fixing frame; 13. Filter screen; 14. Movable frame; 15. Movable ring; 16. Sealing ring; 17. Limiting ring; 18. Fixing plate; 19. Mounting groove; 20. Fixing ring; 21. Threaded connecting ring; 22. Mounting pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model relates to a cleaning device for the inlet pipe of an electric water heater with scale inhibition function. It includes an inlet pipe body 1, which is an important pipe connecting the tap water system and the electric water heater. It is responsible for introducing cold water into the electric water heater for heating, a mature existing technology that will not be elaborated upon here. A cleaning scraper 2 is installed inside the inlet pipe body 1, and a magnet 3 is fixedly connected to one side of the cleaning scraper 2. The cleaning scraper 2 is used to scrape and clean scale from the inner wall of the inlet pipe body 1. The magnet 3 can rotate with the cleaning scraper 2 and adsorb and remove small metal particles from the inner wall. An adjustment mechanism is installed inside the inlet pipe, including a fixed cylinder 4 installed inside the inlet pipe body 1. A threaded rod 5 is movably connected to the top of the fixed cylinder 4. The top of the threaded rod 5 extends to the top of the fixed cylinder 4 and is fixedly connected to a handwheel. The threaded rod 5 and the fixed cylinder 4 are movably connected through a sealed bearing. A threaded sleeve 6 is threadedly connected to the surface of the threaded rod 5. The bottom of the threaded sleeve 6 extends to the bottom of the fixed cylinder 4. The threaded sleeve 6 and the fixed cylinder 4 are in close contact to ensure the sealing of the fixed cylinder 4. A drive mechanism is provided on one side of the water inlet pipe body 1. The drive mechanism includes a support frame 7 provided on one side of the water inlet pipe body 1, a motor 8 fixedly connected to the top of the support frame 7, a first gear 9 fixedly connected to the output end of the motor 8, and a second gear 10 meshing with one side of the first gear 9.

[0028] Example 2

[0029] Please see Figures 1-5Based on Embodiment 1, the adjustment mechanism further includes a connecting frame 11 fixedly connected to the bottom of the threaded sleeve rod 6, the connecting frame 11 being fixedly connected to the cleaning scraper 2, a fixed frame 12 fixedly connected to one side of the threaded sleeve rod 6, a filter screen 13 fixedly connected to the bottom of the fixed frame 12, the bottom of the filter screen 13 and the cleaning scraper 2 being at the same level as the bottom of the water inlet pipe body 1, ensuring comprehensive cleaning of the inner wall of the water inlet pipe body 1, and a driving mechanism further includes a movable frame 14 fixedly connected to the top of the second gear 10, the movable frame 14 being fixedly connected to the top of the fixed cylinder 4, a movable ring 15 fixedly connected to the surface of the movable frame 14, a sealing ring 16 fixedly connected to the surface of the movable ring 15, the bottom of the movable ring 15 contacting the top of the water inlet pipe body 1, and the sealing ring 16 sealing the contact area between the movable ring 15 and the water inlet pipe body 1, the second gear 10 being located on the surface of the movable ring 15, and a limiting ring 17 fixedly connected to one side of the support frame 7. A fixed plate 18 is fixedly connected to one side of the support frame 7. The top of the fixed plate 18 has an installation groove 19 that matches the support frame 7. The support frame 7 and the fixed plate 18 are limited by a threaded pin. The installation groove 19, the fixed plate 18, and the support frame 7 all have pin holes that match the threaded pins. A fixed ring 20 is fixedly connected to the bottom surface of the water inlet pipe body 1. A threaded connecting ring 21 is threadedly connected to the surface of the fixed ring 20. An installation tube 22 is movably connected to the top of the movable ring 15. The top of the movable ring 15 is movably connected to the installation tube 22 through a sealed bearing. A support rod is provided on the top of the limiting ring 17. A limiting block is fixedly connected to the bottom of the support rod. The bottom of the limiting block is slidably connected to the limiting ring 17. An annular limiting groove that matches the limiting block is opened on the top of the limiting ring 17. A slider is fixedly connected to one side of the threaded sleeve rod 6. The slider is slidably connected to one side of the fixed cylinder 4. A sliding groove that matches the slider is opened on one side of the fixed cylinder 4.

[0030] The working principle of this utility model is as follows: Rotating the handwheel drives the threaded rod 5 to rotate, which in turn moves the threaded sleeve rod 6 up and down. The longitudinal positions of the cleaning scraper 2, magnet 3, and filter screen 13 are simultaneously adjusted via the connecting frame 11 and the fixed frame 12 to fit the length of the water inlet pipe. Starting the motor 8 causes the first gear 9 to drive the second gear 10 to rotate, which in turn drives the fixed cylinder 4 and its internal components to rotate as a whole via the movable frame 14 and the movable ring 15. The cleaning scraper 2 removes scale from the pipe wall, the magnet 3 attracts metallic impurities, and the filter screen 13 intercepts scale particles. After turning off the water supply, loosening the threaded connecting ring 21 and the mounting pipe 22, and pulling out the threaded pin of the fixed plate 18, allows the entire device to be removed from the water inlet pipe. The accumulated scale on the filter screen 13 is then cleaned, and the device is reinstalled for continued use. Through the coordinated design of mechanical adjustment and external drive, the drawbacks of traditional cleaning devices—namely, their lack of adjustability and the vulnerability of built-in drives—are solved. This design balances efficient cleaning with long-term reliability, making it suitable for large-scale application.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A water inlet pipe cleaning device for an electric water heater with scale inhibition function, comprising an inlet pipe body (1), characterized in that: The water inlet pipe body (1) is provided with a cleaning scraper (2), and a magnet (3) is fixedly connected to one side of the cleaning scraper (2). The water inlet pipe is provided with an adjustment mechanism, which includes a fixed cylinder (4) located inside the water inlet pipe body (1), a threaded rod (5) rotatably connected to the top of the fixed cylinder (4), and a threaded sleeve (6) threadedly connected to the surface of the threaded rod (5). A drive mechanism is provided on one side of the water inlet pipe body (1). The drive mechanism includes a support frame (7) provided on one side of the water inlet pipe body (1), a motor (8) fixedly connected to the top of the support frame (7), a first gear (9) fixedly connected to the output end of the motor (8), and a second gear (10) meshing with one side of the first gear (9).

2. The electric water heater inlet pipe cleaning device with scale inhibition function according to claim 1, characterized in that: The adjustment mechanism also includes a connecting frame (11) fixedly connected to the bottom of the threaded sleeve (6), a fixing frame (12) fixedly connected to one side of the threaded sleeve (6), and a filter screen (13) fixedly connected to the bottom of the fixing frame (12).

3. A water inlet pipe cleaning device for an electric water heater with scale inhibition function according to claim 1, characterized in that: The drive mechanism also includes a movable frame (14) fixedly connected to the top of the second gear (10), a movable ring (15) fixedly connected to the surface of the movable frame (14), a sealing ring (16) fixedly connected to the surface of the movable ring (15), and a limiting ring (17) fixedly connected to one side of the support frame (7).

4. A water inlet pipe cleaning device for an electric water heater with scale inhibition function according to claim 1, characterized in that: A fixing plate (18) is fixedly connected to one side of the water inlet pipe body (1), and the top of the fixing plate (18) is provided with an installation groove (19) that is compatible with the support frame (7).

5. A water inlet pipe cleaning device for an electric water heater with scale inhibition function according to claim 1, characterized in that: A fixing ring (20) is fixedly connected to the bottom surface of the water inlet pipe body (1), and a threaded connecting ring (21) is threadedly connected to the surface of the fixing ring (20).

6. A water inlet pipe cleaning device for an electric water heater with scale inhibition function according to claim 3, characterized in that: The top of the movable ring (15) is movably connected to the mounting tube (22), and the top of the limiting ring (17) is provided with a support rod. The bottom of the support rod is fixedly connected to a limiting block, and the bottom of the limiting block is slidably connected to the limiting ring (17).

7. A water inlet pipe cleaning device for an electric water heater with scale inhibition function according to claim 1, characterized in that: A slider is fixedly connected to one side of the threaded sleeve (6), and the slider is slidably connected to one side of the inside of the fixed cylinder (4).

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