Descaling mechanical scraper of electrochemical water treatment equipment

Abstract

The utility model discloses a descaling mechanical scraper of electrochemical water treatment equipment, and belongs to the technical field of electrochemical water treatment. The equipment comprises a box body, anode plates and cathode plates, the anode plates and the cathode plates are arranged in the box body in a staggered mode, the cathode plates are connected with lead screws through fixing rods, and the lead screws are driven by stepping motors to drive the cathode plates to move up and down; scrapers are arranged above the anode plates, are arranged between the adjacent cathode plates at equal intervals in the length direction of the box body, are of a three-section structure and comprise bottoms, inclined wing parts and scraping heads, and gaps are reserved between the scraping heads and the cathode plates; according to the structure, the scraping contact area and efficiency can be remarkably improved, and the problem that a traditional horizontal scraper is not thorough in descaling is solved; the device is further provided with a water inlet, a water outlet, a dirt discharge port and supporting legs, and fluid management and structure supporting are facilitated; the scraper is reasonable in structural design, high in automation degree and suitable for various industrial water treatment scenes, and has the advantages of being efficient, durable and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical scale removal technology, specifically to a mechanical scraper for descaling in electrochemical water treatment equipment. Background Technology

[0002] With the continuous improvement of industrial water conservation and environmental protection standards, electrochemical water treatment technology has been widely used in industrial circulating cooling water, wastewater treatment and other fields. This technology typically uses a DC power supply to create an electric field between the anode and cathode. In the anode region, an oxidation reaction occurs to sterilize, disinfect and decompose organic matter; in the cathode region, it promotes the preferential deposition of scaling substances such as calcium carbonate (CaCO3) and magnesium hydroxide (Mg(OH)2), thereby achieving the effects of descaling and reducing water alkalinity.

[0003] In electrochemical descaling systems, the cathode plate surface is the primary area for scale deposition. If left uncleaned for extended periods, it will severely impact conductivity, current density, and may even lead to a sharp drop in electrolysis efficiency or system failure. Current mainstream scale removal methods primarily rely on:

[0004] Chemical cleaning: Cleaning the cathode surface with acidic agents poses risks of environmental pollution and operational safety hazards;

[0005] Manual cleaning: requires stopping the machine for disassembly, is labor-intensive, and inefficient;

[0006] Mechanical scraping descaling: This method uses a mechanical structure to physically scrape the cathode plate surface, and it is currently the most widely used method.

[0007] Existing mechanical scraper devices generally adopt a simple horizontally installed structure design, such as a flat metal blade or a rotating scraper combined with a linear drive mechanism to clean the cathode plate by moving it up and down. However, this type of structure has the following shortcomings: 1. Incomplete scraping effect: Scale is mainly composed of calcite, which has high hardness and strong adhesion. The small contact area between the traditional scraper and the cathode plate makes it difficult to effectively remove some scale, resulting in secondary scale buildup; 2. Scraper is prone to deformation or jamming: During repeated operation, the traditional structure lacks a reasonable stress design, which easily leads to local stress concentration and scraper damage; 3. Difficult maintenance: The scraper is mostly located inside the tank, and long-term contact with water makes it prone to corrosion and rust, making replacement and maintenance inconvenient.

[0008] In summary, traditional electrochemical water treatment equipment still faces many technical bottlenecks in its descaling mechanical structure, making it difficult to meet the demands of modern industry for continuous operation, high efficiency, and low maintenance. Utility Model Content

[0009] The technical problem this invention aims to solve is to overcome existing defects and provide a mechanical scraper for descaling in electrochemical water treatment equipment. The innovative three-section scraper structure significantly improves the descaling efficiency of the cathode plate in electrochemical water treatment equipment, solving the problems of small contact area and incomplete descaling associated with traditional horizontal scrapers. By optimizing the electrode plate spacing and the automatic scraping mechanism, the system's energy consumption is effectively reduced and electrolysis efficiency is improved. The high-position installation of the scraper avoids corrosion, and the structure facilitates disassembly and maintenance, enhancing the equipment's durability and stability, thus effectively solving the problems in the background technology.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a mechanical scraper for descaling in an electrochemical water treatment device, comprising a housing, an anode plate, and a cathode plate. The upper end of the housing is open, and the anode plate and cathode plate are arranged alternately within the housing. A fixed rod is connected above the cathode plate, and the fixed rod is connected to a lead screw on both sides of the housing. The rotation of the lead screw can drive the fixed rod and the cathode plate to move linearly in the vertical direction. A scraper is provided above the anode plate, higher than the top of the housing. The scrapers are equidistantly distributed between adjacent cathode plates along the length of the housing. The scraper is divided into three parts: the middle part is the bottom, the two sides of the bottom are inclined wings, and the outer end of the inclined wings is the scraper head. A gap is left between the scraper head and the cathode plate. This design, compared to a horizontal scraper, can increase the contact area with scale, thereby further reducing the distance between the anode plate and the cathode plate. The scraper head is more conducive to scraping scale, effectively cleaning the scale on the cathode plate and preventing the residue of hard scale that is difficult to remove from the cathode plate.

[0011] Furthermore, the anode plate is completely submerged in the water in the tank, the lower part of the cathode plate is submerged in the water in the tank, and the area of ​​the cathode plate is larger than that of the anode plate.

[0012] Furthermore, the distance between the cathode plate and the anode plate is 50mm to 100mm.

[0013] Furthermore, the sides of the tank are equipped with water inlets and drain outlets, the bottom of the tank has a scale drain outlet, and the four corners of the tank are equipped with support legs.

[0014] Furthermore, the angle between the slanted wing and the horizontal plane is 30°, the angle between the scraper head and the vertical direction is 60°, the angle between the scraper head and the horizontal plane is 30°, and the entire scraper is made of stainless steel.

[0015] Furthermore, a flat base is provided below the scraper, and the flat base is fixed to the box at equal intervals. The bottom of the scraper is flat and is fixedly connected to the flat base by screws.

[0016] Furthermore, the fixing rod is fixedly connected to the lead screw by a nut, and a motor is installed at the lower end of the lead screw. The motor is a stepper motor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The descaling mechanical scraper proposed in this utility model adopts a unique three-section structure. Through reasonable angle design, the angled wing makes an angle of 30° with the horizontal plane and the scraper head makes an angle of 60° with the vertical direction, which greatly increases the contact area with the scale on the cathode plate surface. Compared with the traditional horizontal scraper, this structure can more effectively adhere to and cut into the hard scale layer of calcite type, achieve a more thorough physical removal effect, significantly reduce the scale residue rate, and improve the actual efficiency of descaling.

[0019] 2. In this utility model, the scraper, in conjunction with the motor drive system, enables automatic up-and-down scraping of the cathode plate, keeping its surface clean and effectively maintaining the current density in the electrolytic reaction zone. At the same time, the optimized layout controls the distance between the anode and cathode plates within the range of 50mm-100mm, ensuring sufficient scraping space while reducing electrolytic energy consumption, thereby achieving the dual goals of improving reaction efficiency and reducing operating costs.

[0020] 3. The scraper is positioned at the top of the tank above the liquid level to avoid direct contact with the treated water, effectively preventing rust and scale buildup. Simultaneously, the scraper's bottom is fixed to an independent base with screws, allowing for quick disassembly and assembly during maintenance, greatly reducing repair difficulty and downtime. This structural design adapts to the demands of frequent industrial use, exhibiting excellent long-term stability and practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0023] Figure 3 This is a top view of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the scraper mounting structure of this utility model.

[0025] In the diagram: 1. Fixed rod, 2. Scraper, 3. Lead screw, 4. Outlet, 5. Inlet, 6. Anode plate, 7. Cathode plate, 8. Drain, 9. Scale outlet, 10. Housing, 11. Support leg, 12. Flat base, 13. Bottom, 14. Sloping wing, 15. Scraper head, 16. Motor. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "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. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a mechanical scraper for descaling in an electrochemical water treatment device, comprising a housing 10, an anode plate 6, and a cathode plate 7. The upper end of the housing 10 is open. The anode plate 6 and the cathode plate 7 are arranged alternately within the housing 10. A fixing rod 1 is connected above the cathode plate 7, and the fixing rod 1 is connected to a lead screw 3 on both sides of the housing 10. The rotation of the lead screw 3 drives the fixing rod 1 and the cathode plate 7 to move linearly in the vertical direction. A scraper 2 is provided above the anode plate 6, higher than the top of the housing 10, and the scrapers 2 are equidistantly distributed along the length of the housing 10. Between two adjacent cathode plates 7, the scraper 2 is divided into three parts: the middle part is the bottom 13, the two sides of the bottom 13 are the inclined wings 14, and the outer end of the inclined wings 14 is the scraper head 15. A gap is left between the scraper head 15 and the cathode plate 7. This structure expands the scraping contact area and improves the scale removal efficiency through the three-section scraper structure and the optimized scraper head angle. The automatic lifting mechanism enhances the system's intelligence level. Its design can effectively solve the problems of high scale residue rate, small contact area, and inconvenient maintenance in traditional structures. The scraper material, installation method, and position arrangement can all be adapted to different scenarios.

[0028] In one possible implementation, the anode plate 6 is completely submerged in the water of the tank 10, and the lower part of the cathode plate 7 is submerged in the water of the tank 10, with the area of ​​the cathode plate 7 being larger than that of the anode plate 6. This implementation scheme achieves a reasonable division of the electrochemical reaction zone by configuring electrode plates with different immersion states, thereby improving descaling efficiency, preventing excessive scaling and local overload of the system, and optimizing the overall operating efficiency of the equipment. The electrode immersion ratio and area ratio can be flexibly adjusted according to different treatment objects.

[0029] In one possible implementation, the distance between the cathode plate 7 and the anode plate 6 is 50 mm to 100 mm; this distance parameter is the result of balancing electrolysis efficiency and the operating space of the scraper, ensuring that efficient deposition reaction can be achieved without affecting the operating space of the mechanical scraping device, and is within the optimal matching range; this distance can be adjusted according to electrolysis requirements to adapt to various water quality conditions.

[0030] In one possible implementation, the sides of the housing 10 are provided with a water inlet 5 and a drain outlet 8, the lower end of the housing 10 is provided with a scale discharge outlet 9, and the four corners of the housing 10 are provided with support legs 11. This structural configuration optimizes the ease of connection between the equipment and the external pipeline system, the scale discharge outlet facilitates the periodic removal of deposited impurities, and the support legs improve the overall stability and ground adaptability, thus possessing good industrial applicability and on-site operation convenience.

[0031] In one possible implementation, the angle between the inclined wing 14 and the horizontal plane is 30°, the angle between the scraper head 15 and the vertical direction is 60°, the angle between the scraper head 15 and the horizontal plane is 30°, and the scraper 2 is made entirely of stainless steel. By matching the angles and selecting the materials, the scraping efficiency and equipment durability are improved, and the structural stability is enhanced. The structural angles and material selections can be customized and adjusted according to different types of scale and operating environments.

[0032] In one possible implementation, a flat base 12 is provided below the scraper 2, and the flat base 12 is fixed to the housing 10 at equal intervals. The bottom 13 of the scraper 2 is flat and is fixedly connected to the flat base 12 by screws. This installation method improves structural stability and maintenance convenience, supports quick disassembly and replacement operations, and meets the stable operation requirements of high-frequency industrial use scenarios. The base structure and fixing method can be optimized and replaced according to the actual process operation.

[0033] In one possible implementation, the fixed rod 1 is fixedly connected to the nut of the lead screw 3, and the lower end of the lead screw 3 is provided with a motor 16, which is a stepper motor; the stepper motor is used to achieve precise control of the scraper's up and down movement, improve the automation and accuracy of operation, and, together with the screw drive system, achieve reliable and stable transmission efficiency, which is a key unit for building an intelligent scraping control system; the drive components and connection structure can be selected with higher performance components according to load changes.

[0034] Working principle: During the operation of this equipment, water is injected into the tank 10 to form the working liquid medium. The anode plate 6 and cathode plate 7 are arranged alternately and connected to a DC power supply to form an electric field. Since the anode plate 6 is completely immersed in water, an oxidation reaction occurs on its surface to generate oxidizing substances such as hypochlorous acid and ozone, thereby achieving the sterilization and disinfection of the water and the decomposition of organic pollutants. The cathode plate 7 is partially immersed, and through electroreduction, Ca²⁺ and Mg²⁺ ions in the water preferentially deposit on its surface to form scale such as calcium carbonate and magnesium hydroxide. Since the surface of the cathode plate 7 is the main area for scaling, the system is equipped with a fixed rod 1 that can move up and down to connect the cathode plate 7. The linear movement in the vertical direction is achieved by a drive system composed of a lead screw 3 and a stepper motor 16. The scraper 2 located above the anode plate 6 slides along the surface of the cathode plate through its three-section structure: bottom 13, inclined wing 14, and scraper head 15. It completes the physical scraping of scale during the rising or falling of the cathode plate. The scraper head 15 is arranged at a specific angle to form an effective cutting angle with the surface of the cathode plate, which enhances the peeling ability of hard scale layers.

[0035] The scraper structure is made of stainless steel, which has good corrosion resistance and mechanical strength. It is installed above the tank above the liquid level to avoid direct contact with water, thus extending its service life and reducing maintenance burden. The flat base 12 provides stable support for the scraper, with high installation accuracy. The screw fixing connection facilitates quick replacement and positioning.

[0036] To achieve efficient fluid management, the housing 10 is equipped with a water inlet 5, a drain outlet 8, and a bottom scale discharge outlet 9, which are used for water input, water renewal, and discharge of scale deposits, respectively; the four corner support legs 11 enhance the overall structural stability and provide bottom space for maintenance operations.

[0037] The spacing between the electrode plates is set in the range of 50mm to 100mm, which is the optimal design after considering both electric field strength and scraper movement space. This is beneficial to improving electrolysis efficiency and reducing system energy consumption.

[0038] This application features an original three-section scraper structure that cleverly combines the bottom 13, the inclined wing 14, and the scraper head 15 to form an integrated descaling mechanism with pre-guiding, wide-angle contact, and high-efficiency cutting functions. Compared with the traditional horizontal scraper structure, this design significantly expands the contact area with the cathode plate scale, making it particularly suitable for removing high-hardness scale substances such as calcite. This greatly improves the thoroughness of descaling and operational efficiency, effectively overcoming the problems of high scale residue rate and frequent mechanical jamming in existing technologies. It demonstrates an innovative combination of structural layout and descaling path.

[0039] Meanwhile, this application systematically optimizes the electrode layout, electrode spacing control, and automated drive of the equipment. The increased cathode plate area, the full immersion setting of the anode plate, and the adjustable electrode spacing make the electric field distribution more balanced. Combined with the stepper motor and lead screw system, it realizes precise control of the scraper operation, forming a continuous, efficient, and low-maintenance operation mechanism. While ensuring high-performance descaling, this device improves the modularity, intelligence, and industrial adaptability of the equipment.

[0040] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. An electrochemical water treatment device descaling mechanical scraper comprising a box (10), an anode plate (6) and a cathode plate (7), characterized in that: The upper end of the box (10) is set to be open. The anode plate (6) and cathode plate (7) are set in the box (10) and are arranged alternately. The cathode plate (7) is connected to the fixing rod (1). The fixing rod (1) is connected to the screw rod (3) on both sides of the box (10). The anode plate (6) is provided with a scraper (2) higher than the top of the box (10). The scraper (2) is distributed equidistantly between two adjacent cathode plates (7) along the length of the box (10). The scraper (2) is divided into three parts. The middle part is the bottom (13). The two sides of the bottom (13) are the oblique wings (14). The outer end of the oblique wings (14) is the scraper head (15). There is a gap between the scraper head (15) and the cathode plate (7).

2. The mechanical scraping blade for scale removal of an electrochemical water treatment apparatus according to claim 1, characterized in that: The anode plate (6) is completely submerged in the water in the tank (10), the lower part of the cathode plate (7) is submerged in the water in the tank (10), and the area of ​​the cathode plate (7) is larger than the area of ​​the anode plate (6).

3. The mechanical scraper for scale removal of an electrochemical water treatment apparatus according to claim 1, characterized in that: The distance between the cathode plate (7) and the anode plate (6) is 50 mm to 100 mm.

4. The mechanical scraping blade for scale removal of an electrochemical water treatment apparatus according to claim 1, characterized in that: The sides of the box (10) are provided with a water inlet (5) and a drain outlet (8), the bottom of the box (10) is provided with a scale discharge outlet (9), and the four corners of the box (10) are provided with support legs (11).

5. The mechanical scraping blade for scale removal of an electrochemical water treatment apparatus according to claim 1, characterized in that: The angle between the oblique wing (14) and the horizontal plane is 30°, the angle between the scraper head (15) and the vertical direction is 60°, the angle between the scraper head (15) and the horizontal plane is 30°, and the scraper (2) is made of stainless steel.

6. The mechanical cleaning blade for an electrochemical water treatment device of claim 1, wherein: A flat base (12) is provided below the scraper (2). The flat base (12) is fixed on the box (10) at equal intervals. The bottom (13) of the scraper (2) is flat and is fixedly connected to the flat base (12) by screws.

7. The mechanical cleaning blade of claim 1, wherein: The fixed rod (1) is fixedly connected to the nut of the lead screw (3), and the lower end of the lead screw (3) is equipped with a motor (16), which is a stepper motor.

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