An electrochemical descaling device and a smart energy-saving and environmentally friendly water treatment unit

Abstract

This utility model relates to the field of electrochemical descaling technology, and in particular to an electrochemical descaling device and a smart energy-saving and environmentally friendly water treatment unit. The electrochemical descaling device includes an outer cylinder; a first water inlet is provided on the outer cylinder; a first insulating flange and a drive device are provided at the top of the outer cylinder; a second insulating flange is provided at the bottom of the outer cylinder; a sedimentation hopper is provided on the second insulating flange; a first water outlet and a sewage outlet are provided on the sedimentation hopper; an insulating rotating frame with its shaft connected to the output end of the drive device is provided inside the outer cylinder; an electrode plate and an elastic plate are provided on the insulating rotating frame; a scraper is provided on the elastic plate; the scraper removes the scale from the reaction wall inside the outer cylinder. The scraper's placement on the elastic plate allows it to remove scale layer by layer, reducing scraper wear and extending scraper life. Sewage can be discharged from the first water outlet using a siphon effect, which is more energy-efficient and avoids water pressure damage to the internal components of the cylinder.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical descaling technology, and in particular to an electrochemical descaling device and a smart energy-saving and environmentally friendly water treatment unit. Background Technology

[0002] Electrochemical descaling is a technology that removes scale by applying an electric field to circulating water and utilizing electrochemical reactions. Its basic principle is to apply an electric field to the circulating water, causing ions in the water to migrate in a directed manner and undergo a series of chemical reactions. At the cathode, water electrolysis produces hydroxide ions, which raises the local pH value, causing scale-forming ions such as calcium and magnesium to precipitate; simultaneously, the electric field alters the crystal morphology of calcium carbonate, making it easier to remove. At the anode, substances such as chlorine and hypochlorous acid are produced, which can kill bacteria and algae and inhibit scaling caused by microorganisms.

[0003] Some electrochemical descaling equipment on the market uses scrapers to remove dirt inside the cylinder, thereby improving electrochemical treatment efficiency and extending equipment lifespan. Some scrapers are mounted inside the cylinder via a blade holder, and the scraper removes the dirt from within the cylinder. In this design, the distance between the scraper and the cylinder is fixed. If the dirt is thick, the scraper will remove a large amount of dirt in a single pass, causing the scraper to wear out too quickly and affecting its lifespan.

[0004] Chinese Patent Application No. CN201921102180.9 discloses a fully automatic electrochemical descaling device, specifically disclosing that "the outer cylinder scraper contacts the inner wall of the outer cylinder to scrape off dirt from the inner wall of the outer cylinder during rotation." In this design, the distance between the scraper and the cylinder is fixed. If the dirt is thick and hard, the scraper will remove a very thick layer of dirt in a single pass, causing the scraper to wear out too quickly and affecting its lifespan. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide an electrochemical descaling device in which the scraper is set on an elastic plate. The scraper can closely adhere to the inner wall of the outer cylinder and scrape off dirt layer by layer, which helps to extend the scraper's lifespan and thus overcomes the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides an electrochemical descaling device, including an outer cylinder; the outer cylinder is provided with a first water inlet.

[0008] The top of the outer cylinder is provided with a first insulating isolation flange; a driving device is provided on the first insulating isolation flange;

[0009] The bottom of the outer cylinder is provided with a second insulating flange; the sedimentation hopper is provided on the second insulating flange; the sedimentation hopper is provided with a first water outlet and a sewage outlet;

[0010] An insulating rotating frame is provided inside the outer cylinder; the output end of the drive device is connected to the rotating shaft of the insulating rotating frame.

[0011] An electrode plate and an elastic plate are mounted on an insulated rotating frame; a scraper is mounted on the elastic plate.

[0012] The drive device drives the insulated rotating frame to rotate, and the scraper removes the dirt from the reaction wall inside the outer cylinder.

[0013] Preferably, the outer cylinder is provided with an installation plate inside; the installation plate is provided with a drain hole and a bearing; the rotating shaft is mounted on the bearing.

[0014] Preferably, there are at least two first water inlets, and the number of first water inlets is greater than the number of first water outlets.

[0015] Preferably, the drive device includes a motor and a gearbox; the output end of the motor is connected to the gearbox; the rotating shaft is connected to the gearbox, and the motor drives the rotating shaft to rotate through the gearbox; the insulating rotating frame is provided with a conductive plate, which is connected to the electrode plate.

[0016] Preferably, the cross-section of the elastic plate is one of a circular arc, an elliptical arc, or a straight line.

[0017] Preferably, the cross-section of the scraper is an obtuse triangle, and its blade is positioned at the obtuse angle.

[0018] Preferably, the electrode plate is a mesh-shaped electrode plate; the outer cylinder is a cylindrical structure made of one of titanium alloy, copper alloy, or tin-lead alloy.

[0019] Preferably, the first insulating isolation flange, the second insulating isolation flange, and the insulating rotating frame are components made of polytetrafluoroethylene or polyvinyl chloride; the scraper is a metal composite scraper.

[0020] This application provides a smart energy-saving and environmentally friendly water treatment unit, including an electrochemical descaling device; a first pipe is provided between the second outlet of the heat exchanger and the first inlet of the outer cylinder; the first outlet of the sedimentation hopper is connected to the water collection tank; a second pipe is provided between the water collection tank and the second inlet of the heat exchanger; and a water pump is provided on the second pipe.

[0021] Preferably, a three-way electric valve is installed on the first and second pipes, and a third pipe is installed between the two three-way electric valves; a flow regulating valve is installed on the first water inlet on the outer cylinder; and an electric two-way valve is installed at the sewage outlet on the sedimentation hopper.

[0022] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, wastewater enters the outer cylinder through the first outlet, and the electrochemical descaling device removes scale from the wastewater; scale forms on the reaction wall. Because the scraper is mounted on the elastic plate, it can scrape off the scale layer by layer under the action of elasticity, reducing scraper wear and extending scraper life. At the same time, under the elastic force of the elastic plate, the scraper can leave only a very small gap with the reaction wall, which can remove scale to the maximum extent while avoiding scratching the reaction wall, resulting in a better cleaning effect.

[0023] In addition, the height of the first inlet is greater than the height of the first outlet. Initially, the sewage is drawn out through the first outlet by a water pump. Once the sewage flows, the water pump can stop working, and the sewage will continuously flow from the first outlet into the collection tank using the siphon effect, which is more energy-efficient and also avoids water pressure shocks that could damage the internal components of the electrochemical descaling device. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram of one embodiment of the present utility model.

[0025] Figure 2 This is an exploded view of one embodiment of the present invention.

[0026] Figure 3 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0027] Explanation of reference numerals in the attached diagram:

[0028] 1. Electrochemical descaling device; 10. Outer cylinder; 11. First outlet; 12. First inlet; 13. First insulating flange; 14. Second insulating flange; 15. Sedimentation hopper; 16. Drain outlet; 17. Mounting plate; 18. Bearing; 19. Drain hole; 110. Rotating frame; 111. Electrode plate; 112. Elastic plate; 113. Scraper; 114. Blade; 115. Rotating shaft; 116. Conductive plate; 120. Drive unit; 121. Motor; 122. Gearbox; 20. Heat exchanger; 21. Second outlet; 22. First pipe; 23. Second inlet; 24. Three-way electric valve; 25. Second pipe; 26. Water pump; 27. Flow regulating valve; 28. Electric two-way valve; 29. ​​Water collection tank. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0030] Example 1

[0031] Please refer to Figures 1 to 2 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is an electrochemical descaling device 1.

[0032] Since the scraper 113 is mounted on the elastic plate 112, the scraper 113 can scrape off dirt layer by layer, reducing wear on the scraper 113 and extending its lifespan.

[0033] This application provides an electrochemical descaling device 1, including an outer cylinder 10; a first water inlet 12 is provided on the outer cylinder 10; a first insulating flange 13 is provided on the top of the outer cylinder 10; a driving device 120 is provided on the first insulating flange 13; a second insulating flange 14 is provided on the bottom of the outer cylinder 10; a sedimentation hopper 15 is provided on the second insulating flange 14; a first water outlet 11 and a drain outlet 16 are provided on the sedimentation hopper 15; an insulating rotating frame 110 is provided inside the outer cylinder 10; the output end of the driving device 120 is connected to the rotating shaft 115 of the insulating rotating frame 110; an electrode plate 111 and an elastic plate 112 are provided on the insulating rotating frame 110; a scraper 113 is provided on the elastic plate 112; the driving device 120 drives the insulating rotating frame 110 to rotate, and the scraper 113 scrapes away the dirt on the reaction wall inside the outer cylinder 10. The outer cylinder 10 is made of titanium alloy. A first insulating flange 13 is installed at the top of the outer cylinder 10, and a second insulating flange 14 is installed at the bottom, ensuring insulation at both ends of the outer cylinder 10. The insulating rotating frame 110 is also insulated, facilitating the installation of other components and improving safety. The first insulating flange 13 and the second insulating flange 14 are fixed with insulating screws. Sludge scraped off by the scraper 113 falls into the sedimentation hopper 15 for sedimentation and is then discharged from the drain port 16. The drive device 120 drives the insulating rotating frame 110 to rotate via the rotating shaft 115, and the scraper 113 on the insulating rotating frame 110 scrapes away the dirt on the reaction wall. The reaction wall on the outer cylinder 10 acts as the cathode, where water electrolysis generates hydroxide ions, increasing the local pH value and causing scale-forming ions such as calcium and magnesium to precipitate. Simultaneously, the electric field alters the crystal morphology of calcium carbonate, making it easier to discharge. The electrode plate 111 acts as the anode, generating chlorine gas, hypochlorous acid, and other substances that can kill bacteria and algae and inhibit scaling caused by microorganisms. The elastic plate 112 is flexible and can bend slightly towards the insulating rotating frame 110, or bend away from the insulating plate. Therefore, when the scraper 113 encounters thick, hard dirt, it will push the elastic plate 112 inward to deform. In this way, the scraper 113 can first scrape off the surface dirt, and after multiple rounds of scraping, finally remove the dirt. This design can reduce the wear of the scraper 113 and improve its service life. At the same time, because the elastic plate 112 is flexible, the distance between the scraper 113 and the reaction wall can be adjusted to be very small, allowing the reaction wall to be scraped more cleanly and ensuring the quality of electrochemical descaling.

[0034] Preferably, the outer cylinder 10 has an internal mounting plate 17; the mounting plate 17 has a drain hole 19 and a bearing 18; the rotating shaft 115 is mounted on the bearing 18. The mounting plate 17 can be made of stainless steel or titanium alloy. The scraper 113 scrapes away the dirt on the reaction wall, and the dirt falls from the drain hole 19 into the sedimentation hopper 15. The sedimentation hopper 15 is funnel-shaped, and sludge can be discharged from the drain port 16.

[0035] Preferably, there are at least two first inlets 12, and the number of first inlets 12 is greater than the number of first outlets 11. In this embodiment, there are two first inlets 12 and one first outlet 11. The electrochemical descaling device 1 preferably uses a high-inlet, low-outlet configuration. When sewage flows, the sewage pump 26 first drives the sewage in the outer cylinder 10 to flow out from the first outlet 11. Then, the sewage pump 26 can stop working, and the sewage can flow continuously from the first outlet 11 to the collection tank 29 through the siphon effect.

[0036] Preferably, the driving device 120 includes a motor 121 and a gearbox 122; the output end of the motor 121 is connected to the gearbox 122; a rotating shaft 115 is connected to the gearbox 122, and the motor 121 drives the rotating shaft 115 to rotate through the gearbox 122; the insulating rotating frame 110 is provided with a conductive plate 116, which is connected to the electrode plate 111. The power of the motor 121 is transmitted to the rotating shaft 115 through the gearbox 122, and the rotating shaft 115 drives the insulating rotating frame 110 to rotate. When the insulating rotating frame 110 rotates, the scraper 113 on the elastic plate 112 scrapes away the dirt on the reaction wall, and the dirt falls into the sedimentation hopper 15. The conductive plate 116 is connected to the electrode plate 111, so that the electrode plate 111 can be energized.

[0037] Preferably, the cross-section of the elastic plate 112 is one of a circular arc, an elliptical arc, or a straight line. In this embodiment, the cross-section of the elastic plate 112 is preferably an elliptical arc. The elastic plate 112 can be installed on the insulating rotating frame 110 by screws. When the scraper 113 encounters thick and hard dirt, the elastic plate 112 will undergo elastic deformation, allowing the scraper 113 to first scrape off the surface layer of the hard and thick dirt, and then thoroughly remove the dirt through multiple scraping actions.

[0038] Preferably, the scraper 113 has an obtuse-angled triangular cross-section, with its blade 114 positioned at the obtuse angle. This structure reduces wear on the blade 114 and extends the service life of the scraper 113.

[0039] Preferably, the electrode plate 111 is a mesh-shaped electrode plate 111; the outer cylinder 10 is a cylindrical structure made of titanium alloy, copper alloy, or tin-lead alloy. In this embodiment, the outer cylinder 10 is made of titanium alloy, which is lightweight, corrosion-resistant, and easy to transport. The mesh-shaped electrode plate 111 allows water to flow through, resulting in good purification effect.

[0040] Preferably, the first insulating isolation flange 13, the second insulating isolation flange 14, and the insulating rotating frame 110 are made of polytetrafluoroethylene or polyvinyl chloride; the scraper 113 is a metal composite scraper 113. In this embodiment, polytetrafluoroethylene is preferably used to make the first insulating isolation flange 13, the second insulating isolation flange 14, and the insulating rotating frame 110. Polytetrafluoroethylene (PTFE), also known as Teflon, [5] commonly known as "King of Plastics", is a high molecular polymer obtained by polymerization of tetrafluoroethylene as a monomer. Its chemical formula is (C2F4)n. It has excellent heat resistance and cold resistance and can be used for a long time at -180 to 260ºC. This material has the characteristics of acid and alkali resistance and resistance to various organic solvents. It is almost insoluble in all solvents. The scraper 113 is a metal composite scraper 113, specifically a 316 stainless steel scraper 113.

[0041] The electrochemical descaling device 1 also has at least the following advantages: 1. Siphon technology, as an innovative key technology applied to water treatment equipment, demonstrates excellent energy-saving and maintenance advantages. In traditional water treatment processes, water pump 26 is a common method for water intake. However, when water pump 26 is running, the large water pressure generated to meet the water intake demand will cause a strong impact on the container wall of the water treatment unit. This continuous high-intensity impact can easily cause damage to the internal parts of the container, which not only increases the equipment maintenance cost, but also affects the continuity and stability of water treatment work due to frequent maintenance. The introduction of siphon technology cleverly solves this problem. Siphon technology uses the pressure difference generated by the liquid level difference to realize the automatic flow of water without relying on the continuous operation of water pump 26. Only a small amount of energy is needed to establish the siphon conditions during the start-up phase, and the water circulation can be maintained by the natural pressure difference thereafter. In this way, not only is the high water pressure impact problem caused by water pump 26 successfully avoided, but the power consumption of the equipment is also greatly reduced, which greatly improves the overall service life and operating efficiency of the equipment. 2. Application of the 316 Metal Composite Scraper 113 in the Automatic Descaling Stage: During the operation of water treatment equipment, a large amount of scale inevitably adheres to the reaction wall. This scale accumulation not only reduces the heat transfer efficiency of the equipment and affects the water treatment effect, but also corrodes the reaction wall over time, seriously threatening the service life of the equipment. The application of the 316 metal composite scraper 113 in the automatic descaling stage provides an effective solution to this industry pain point. The 316 metal composite scraper 113 is made of a special alloy material, possessing excellent hardness and wear resistance, enabling it to work stably for a long time in complex water treatment environments. During the automatic descaling stage, the scraper 113, through a precise mechanical control device, closely adheres to the surface of the reaction wall, scraping away the attached scale in a uniform and stable motion. Its unique design structure ensures that the scraper 113 can comprehensively cover the reaction wall during the scraping process, achieving efficient cleaning of both large areas of scale accumulation and easily overlooked areas such as corners and crevices. 3. By using 316 stainless steel composite scraper 113, the descaling efficiency of the water treatment equipment has been greatly improved. The highly efficient descaling effect keeps the reaction wall clean at all times, effectively reducing scale corrosion and significantly extending the lifespan of existing equipment. This not only reduces equipment replacement costs but also minimizes production downtime caused by equipment repair and replacement, providing strong support for stable production and effectively solving the long-standing equipment maintenance problem that has plagued the industry. 4. By rationally selecting the descaling scraper material, excellent wear resistance and efficient descaling capabilities are ensured. Simultaneously, an innovative method of tight compression adhesion ensures a close fit between the descaling scraper and the water treatment unit wall, eliminating cleaning dead corners. This significantly improves the descaling effect, thoroughly removing dirt from the wall and ensuring the wall remains as clean as new.This not only makes the equipment operate more smoothly but also effectively reduces the corrosion of the water tank by dirt, thus significantly extending the service life of the water processor. 5. In terms of energy saving, this smart water treatment device has a unique advantage. It is equipped with only one water pump 26, significantly reducing energy consumption compared to many similar devices on the market. It cleverly replaces the original water pump 26's water intake mode by utilizing a physical siphon effect. This innovative design not only reduces energy consumption and saves on electricity costs but also practices the concept of green environmental protection.

[0042] Example 2

[0043] Example 2 includes the electrochemical descaling device 1 from Example 1. The identical parts will not be repeated here; please refer to the relevant documentation for details. Figure 3 As shown, the application provides a smart energy-saving and environmentally friendly water treatment unit, including an electrochemical descaling device 1; a first pipe 22 is provided between the second outlet 21 of the heat exchanger 20 and the first inlet 12 of the outer cylinder 10; the first outlet 11 of the sedimentation tank 15 is connected to the water collection tank 29; a second pipe 25 is provided between the water collection tank 29 and the second inlet 23 of the heat exchanger 20; a water pump 26 is provided on the second pipe 25. A three-way electric valve 24 is provided on the first pipe 22 and the second pipe 25, and a third pipe is provided between the two three-way electric valves 24; a flow regulating valve 27 is provided on the first inlet 12 of the outer cylinder 10; and an electric two-way valve 28 is provided at the drain outlet 16 of the sedimentation tank 15.

[0044] Wastewater from heat exchanger 20 enters outer cylinder 10 through first pipe 22 from second outlet 21, where electrochemical descaling device 1 treats the wastewater. After treatment, the treated water is transported to collection tank 29 by siphon / pump 26, and then enters heat exchanger 20 through second pipe 25. When the water quality is good, the flow direction of wastewater can be controlled by three-way electric valve 24, allowing it to flow directly back to heat exchanger 20.

[0045] Smart Energy-Saving and Environmentally Friendly Water Treatment Unit Introduction: 1. Heat Exchanger 20: As the main source of wastewater, it provides the entire system with industrial water to be treated. The industrial water undergoes preliminary heat exchange and water quality adjustment in the heat exchanger 20 before entering the electrochemical water processor for further treatment. 2. Electrochemical Water Processor: The core treatment component, where the industrial water undergoes electrochemical changes. The water processor contains electrode devices; when a 36V voltage is applied, impurity ions such as calcium and magnesium in the water undergo chemical reactions to generate precipitates such as Mg(OH)2 and CaCO3, achieving the purpose of removing scale from the water. 3. Electric Two-Way Valve 28 (DN40): Controls the on / off state and direction of water flow, achieving automatic sewage discharge and periodically discharging wastewater from the processor to prevent sediment from clogging it. 4. Three-Way Electric Valve 24 (DN25): Allows flexible switching of water flow direction, enabling water to choose its flow path between different pipe branches. For example, during the water circulation process, water can be controlled to enter the water processor from the heat exchanger 20, or the treated water can be returned to the heat exchanger 20 via the water pump 26. 5. Water Tank: Dimensions are 500X300X400mm, capacity 120 liters, used to store treated water. The water tank acts as a buffer and reserve; clean water treated in the water processor is stored in the tank through an overflow pipe and periodically returned to the heat exchanger 20 via the water pump 26. 6. Water Pump 26 (DC48V - 500W - 40L / min): Provides power for water flow, ensuring water circulation throughout the system. Its power and flow rate parameters (40L / min) determine the water circulation speed, ensuring the system's processing efficiency.

[0046] Wastewater treatment process flow: 1. Influent stage: Industrial water in heat exchanger 20 flows into electrochemical descaling unit 1 through a DN25 pipe via siphon effect, controlled by a three-way electric valve 24. 2. Treatment stage: After entering the water treatment unit, impurities in the water undergo electrochemical changes under the influence of electrodes and voltage, producing sediment. The sediment adheres to the inside of the descaling unit and can be dislodged by an internal scraper device driven intermittently by motor 121, settling at the bottom of the descaling unit and being periodically discharged. 3. Effluent and circulation stage: The treated water flows out of the electrochemical water treatment equipment through the DN25 pipe, reaching the two-way electric valve 28 and the three-way electric valve 24. The valves switch the water flow direction according to PLC control, and the treated water flows into a water tank for storage. The water in the tank can be re-entered into the system for circulation under the action of pump 26.

[0047] In summary, the key design feature of this invention lies in the fact that the scraper 113 is mounted on the elastic plate 112. Therefore, under the action of elasticity, the scraper 113 can scrape away dirt layer by layer, reducing wear and extending its lifespan. Simultaneously, the scraper 113 can leave only a very small gap with the reaction wall, maximizing dirt removal while avoiding damage to the reaction wall, resulting in better cleaning. Furthermore, the height of the first inlet 12 is greater than the height of the first outlet 11, allowing for siphon drainage. Wastewater continuously flows from the first outlet 11 to the collection tank 29, resulting in greater energy savings and preventing water pressure impact from damaging the internal components of the electrochemical descaling device 1.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electrochemical descaling device, characterized in that: Includes an outer cylinder (10); the outer cylinder (10) is provided with a first water inlet (12); The top of the outer cylinder (10) is provided with a first insulating isolation flange (13); a driving device (120) is provided on the first insulating isolation flange (13); The bottom of the outer cylinder (10) is provided with a second insulating isolation flange (14); the sedimentation hopper (15) is provided on the second insulating isolation flange (14); the sedimentation hopper (15) is provided with a first water outlet (11) and a sewage outlet (16); An insulating rotating frame (110) is provided inside the outer cylinder (10); the output end of the driving device (120) is connected to the rotating shaft (115) of the insulating rotating frame (110); An electrode plate (111) and an elastic plate (112) are provided on the insulating rotating frame (110); a scraper (113) is provided on the elastic plate (112); The drive device (120) drives the insulating rotating frame (110) to rotate, and the scraper (113) scrapes away the dirt on the reaction wall inside the outer cylinder (10).

2. The electrochemical descaling device according to claim 1, characterized in that: The outer cylinder (10) is provided with an installation plate (17); the installation plate (17) is provided with a drain hole (19) and a bearing (18); the rotating shaft (115) is provided on the bearing (18).

3. An electrochemical descaling device according to claim 1, characterized in that: There are at least two first inlets (12), and there are more first inlets (12) than first outlets (11).

4. An electrochemical descaling device according to claim 1, characterized in that: The drive device (120) includes a motor (121) and a gearbox (122); the output end of the motor (121) is connected to the gearbox (122); the rotating shaft (115) is connected to the gearbox (122), and the motor (121) drives the rotating shaft (115) to rotate through the gearbox (122); the insulating rotating frame (110) is provided with a conductive plate (116), which is connected to the electrode plate (111).

5. An electrochemical descaling device according to claim 1, characterized in that: The cross-section of the elastic plate (112) is one of the following: circular arc, elliptical arc, or straight line.

6. An electrochemical descaling device according to claim 1, characterized in that: The cross-section of the scraper (113) is an obtuse triangle, and its blade is located at an obtuse angle.

7. An electrochemical descaling device according to claim 1, characterized in that: The electrode plate (111) is a mesh electrode plate (111); the outer cylinder (10) is a cylindrical structure made of one of titanium alloy, copper alloy, or tin-lead alloy.

8. An electrochemical descaling device according to claim 1, characterized in that: The first insulating isolation flange (13), the second insulating isolation flange (14), and the insulating rotating frame (110) are components made of polytetrafluoroethylene or polyvinyl chloride; the scraper (113) is a metal composite scraper (113).

9. A smart, energy-saving, and environmentally friendly water treatment unit, characterized in that: An electrochemical descaling device comprising any one of claims 1-8; a first pipe (22) is provided between the second outlet (21) of the heat exchanger (20) and the first inlet (12) of the outer cylinder (10); the first outlet (11) of the sedimentation hopper (15) is connected to the water collection tank (29); a second pipe (25) is provided between the water collection tank (29) and the second inlet (23) of the heat exchanger (20); and a water pump (26) is provided on the second pipe (25).

10. A smart energy-saving and environmentally friendly water treatment unit according to claim 9, characterized in that: A three-way electric valve (24) is installed on the first pipe (22) and the second pipe (25), and a third pipe is installed between the two three-way electric valves (24); a flow regulating valve (27) is installed on the first water inlet (12) on the outer cylinder (10); an electric two-way valve (28) is installed at the sewage outlet (16) on the sedimentation hopper (15).

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