An electrochemical descaling device for circulating water

Abstract

The present invention discloses an electrochemical descaling device for circulating water, mainly related to the field of water treatment. It includes a descaling box, a water inlet pipe and a water outlet pipe are provided on the descaling box, a slag discharge pipe is provided at the bottom of the descaling box, a plurality of cathode plates are distributed along a vertical array inside the descaling box, an anode plate is provided between adjacent cathode plates, and a through port is provided on the cathode plate and the anode plate, a cavity is provided inside the cathode plate, a movable plate is connected along a vertical sliding connection inside the cavity, a plurality of deposition holes are symmetrically provided on the upper and lower sides of the cathode plate, a plurality of deposition columns are symmetrically provided on the upper and lower sides of the movable plate, an outer shaft body is provided in the descaling box for driving the plurality of movable plates to slide up and down at the same time, and a scraper is symmetrically connected to the upper and lower sides of the cathode plate. The beneficial effect of the present invention is that it can solve the technical problem that the cleaning frequency of the existing cathode structure is high or the cleaning is difficult, reduce the cleaning frequency, make the cleaning more convenient and thorough, and ensure the electrochemical descaling effect after long-term use.

Description

Technical Field

[0001] The invention relates to the field of water treatment, in particular to an electrochemical descaling device for circulating water. Background Art

[0002] After long-term use, circulating water used for cooling and other functions will cause scaling or corrosion on the side walls of the pipes due to the influence of water quality and microorganisms, affecting the efficiency of heat exchange and the service life of the equipment, and increasing the energy consumption of the cooling system. Therefore, it is necessary to regularly treat the circulating water to reduce the impact on the cooling system. Commonly used water treatment methods are chemical treatment and electrochemical treatment. The cost of chemical treatment is high, and the subsequent maintenance and cleaning are more complicated. Electrochemical treatment is increasingly used in the field of water treatment due to its advantages such as easy operation, low subsequent use cost, and high descaling efficiency. The current electrochemical treatment is widely used in the field of water treatment. When the descaling device is in use, cations in the water that are prone to scaling will form solid deposits near the cathode. After long-term use, the solids need to be cleaned regularly. However, due to the small surface area of ​​the existing cathode structure, the deposited solids need to be cleaned more frequently, which increases the difficulty of subsequent maintenance. Some cathode devices that use a mesh structure to increase the surface area, although the surface area is increased and the frequency of cleaning is reduced, the mesh structure is more difficult to clean and it is difficult to clean the solids deposited thereon, which affects the deposition efficiency of cations near the cathode, resulting in a gradual decrease in the treatment effect of circulating water after long-term use. Summary of the invention

[0003] The object of the present invention is to provide an electrochemical descaling device for circulating water, which can solve the technical problem that the cleaning frequency of the existing cathode structure is high or the cleaning is difficult, and the cleaning frequency is reduced by increasing the surface area of ​​the cathode. At the same time, it makes the cleaning of solids deposited near the cathode more convenient and thorough, thereby ensuring the electrochemical descaling effect after long-term use.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] An electrochemical descaling device for circulating water comprises a descaling box, wherein the descaling box is provided with a water inlet pipe and a water outlet pipe, a slag discharge pipe is provided at the bottom of the descaling box, a plurality of cathode plates are distributed in a vertical array inside the descaling box, an anode plate is provided between adjacent cathode plates, both the cathode plates and the anode plates are provided with through holes, and the through holes on adjacent cathode plates and anode plates are arranged in a staggered manner, a cavity is provided inside the cathode plate, a movable plate is vertically slidably connected inside the cavity, the movable plate is electrically connected to the cathode plate, a plurality of deposition holes are symmetrically provided on the upper and lower sides of the cathode plate, the deposition holes are connected to the cavity, a plurality of deposition columns used in conjunction with the deposition holes are symmetrically provided on the upper and lower sides of the movable plate, the deposition columns are slidably connected in the deposition holes, the ends of the deposition columns on the upper and lower sides can be aligned with the ends of the deposition holes on the upper and lower sides when the movable plate slides, an outer shaft body is provided inside the descaling box for driving the plurality of movable plates to slide up and down at the same time, a scraper is symmetrically rotatably connected to the upper and lower sides of the cathode plate, and the scraper is in sliding contact with the cathode plate when the ends of the deposition columns are aligned with the ends of the deposition holes.

[0006] Furthermore, the outer shaft body penetrates the cathode plate and is rotatably connected to the movable plate. The cathode plate is symmetrically rotatably connected to a swivel on both sides. The swivel is sleeved on the outside of the outer shaft body. The scraper is fixed on the swivel. A positioning assembly is provided between the outer shaft body and the swivel.

[0007] Furthermore, the positioning assembly includes a positioning block and a positioning groove, the positioning block is arranged on the outer shaft, the positioning groove is arranged on the rotating ring, and the positioning block enters the positioning groove when the end of the deposition column and the end of the deposition hole are aligned.

[0008] Furthermore, a rotating shaft is rotatably connected inside the descaling box, a slide groove is provided inside the outer shaft body, the rotating shaft is slidably connected in the slide groove, a telescopic rod is provided between the end of the rotating shaft and the end of the slide groove, and a limiting assembly is provided between the rotating shaft and the slide groove.

[0009] Furthermore, the limiting assembly includes a limiting bar and a limiting groove, the limiting bar is symmetrically arranged on the side of the rotating shaft, the limiting groove is symmetrically opened on the side wall of the sliding groove, and the limiting bar is slidably connected to the limiting groove.

[0010] Furthermore, a support ring is provided at the bottom of the descaling box for use with the outer shaft body, and the bottom of the outer shaft body extends into the support ring.

[0011] Furthermore, a conductive plate is provided on the inner wall of the cavity, a conductive column is provided on the movable plate, and the conductive column is in contact with the conductive plate.

[0012] Furthermore, conductive rods are symmetrically rotatably connected on both sides of the conductive column, a compression spring is provided between the conductive rod and the conductive column, a contact ball is rotatably connected to the end of the conductive rod, a guide groove is provided on the conductive plate, and the contact ball is rollingly connected in the guide groove.

[0013] Furthermore, an annular tube is provided in the through opening on the cathode plate, and a plurality of aeration nozzles are distributed in an array on the annular tube.

[0014] Furthermore, a busbar is provided on the outer side wall of the descaling box, and a plurality of cathode plates are connected in parallel via the busbar.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, a plurality of cathode plates are distributed in a vertical array in the descaling box, an anode plate is arranged between adjacent cathode plates, and both the cathode plates and the anode plates are provided with through holes, and the through holes on adjacent cathode plates and anode plates are arranged in a staggered manner. Such a structure enables the circulating water to flow continuously after entering the descaling box from the water inlet pipe through the through holes on the plurality of cathode plates and the anode plates, thereby making full contact with the upper and lower sides of the cathode plates, extending the flow path of the circulating water, increasing the contact area with the cathode plates, thereby increasing the amount of solids that can be deposited, reducing the frequency of cleaning solids near the cathode, and greatly reducing the difficulty and workload of later maintenance;

[0017] 2. A cavity is arranged inside the cathode plate, and a movable plate is vertically slidably connected inside the cavity, and the movable plate is electrically connected to the cathode plate. A plurality of deposition holes are symmetrically arranged on the upper and lower sides of the cathode plate, and a plurality of deposition columns are symmetrically arranged on the upper and lower sides of the movable plate, and the deposition columns are slidably connected in the deposition holes. The deposition columns can be extended to the outside of the deposition holes or retracted into the inside of the deposition holes under the drive of the movable plate. Such a structure makes a plurality of protruding deposition columns and concave deposition holes appear on the surface of the cathode plate when the movable plate moves, thereby greatly increasing the surface area near the cathode, so that cations can be deposited on the surface of the cathode plate to form solids, and can also be deposited on the deposition columns or deposited. Solids are formed in the holes, thereby greatly increasing the amount of solids that can be deposited near the cathode and reducing the frequency of cleaning. At the same time, when cleaning is needed, the moving plate is used to drive the deposition column to move, so that the protruding deposition column shrinks and enters the deposition hole, and the concave deposition column extends from the deposition hole. During the above movement, the inner wall of the deposition hole scrapes off the solids on the side wall of the protruding deposition column, and the concave deposition column scrapes off the solids deposited on the inner wall of the deposition hole, thereby making it easier to clean the protruding or concave parts on the cathode plate, greatly reducing the difficulty and workload of cleaning, making the cleaning of the deposited solids more thorough, and ensuring the effect of electrochemical descaling of the circulating water;

[0018] 3. When the moving plate slides, the ends of the deposition columns on the upper and lower sides can be aligned with the ends of the deposition holes on the upper and lower sides at the same time, that is, the ends of the deposition columns on the upper and lower sides are flush with the surface of the cathode plate, thereby automatically scraping off the solids deposited on the sides of the deposition columns and the deposition holes, and making the upper and lower sides of the cathode plate flat. At this time, the scraper is driven to rotate so that the scraper slides in contact with the flat surface of the cathode plate, thereby scraping off the solids in the area outside the deposition holes on the cathode plate and on the ends of the deposition columns, making the cleaning of the solids on the cathode structure more comprehensive and thorough, reducing the residual amount of solids and the difficulty of cleaning, and ensuring the electrochemical descaling effect on the circulating water after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Attached Figure 2 It is a left side view of the present invention.

[0021] Attached Figure 3 This invention is attached Figure 2 Cross-sectional view along the AA direction.

[0022] Attached Figure 4 This invention is attached Figure 3 A partial enlarged view of area B in the middle.

[0023] Attached Figure 5 This invention is attached Figure 3 Cross-sectional view along CC direction.

[0024] Attached Figure 6 This invention is attached Figure 5 A partial enlarged view of area D in the middle.

[0025] Attached Figure 7 This invention is attached Figure 3 Cross-sectional view along the EE direction.

[0026] Attached Figure 8 This invention is attached Figure 7 A partial enlarged view of the F area in the middle.

[0027] Numbers shown in the accompanying drawings:

[0028] 1. Descaling box; 2. Water inlet pipe; 3. Water outlet pipe; 4. Slag discharge pipe; 5. Cathode plate; 6. Anode plate; 7. Through port; 8. Cavity; 9. Moving plate; 10. Sedimentation hole; 11. Sedimentation column; 12. Outer shaft; 13. Scraper; 14. Rotating ring; 15. Positioning block; 16. Positioning groove; 17. Rotating shaft; 18. Slide groove; 19. Telescopic rod; 20. Limiting strip; 21. Limiting groove; 22. Support ring; 23. Conductive plate; 24. Conductive column; 25. Conductive rod; 26. Compression spring; 27. Contact ball; 28. Guide groove; 29. ​​Ring pipe; 30. Aeration nozzle; 31. Busbar. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0030] Reference Figure 1 and Figure 2The present invention discloses an electrochemical descaling device for circulating water, the main structure of which includes a descaling box 1, which is made of metal material, and has a plurality of supporting legs welded or bolted at the bottom. The descaling box 1 is provided with an inlet pipe 2 and an outlet pipe 3. The circulating water to be treated enters the descaling box 1 from the inlet pipe 2 under the action of a water pump, and is discharged from the outlet pipe 3 after electrochemical descaling. In order to improve the deposition effect of cations that are easy to form scale in the circulating water, the inlet pipe 2 is generally located near the bottom of the side wall of the descaling box 1, and the outlet pipe 3 is provided. 3 is located near the top of the side wall of the descaling box 1, so that the deposited solids can be better retained in the descaling box 1 under the action of gravity. A slag discharge pipe 4 is provided at the bottom of the descaling box 1. After a period of use, the water inlet pipe 2 is closed and the slag discharge pipe 4 is opened, so that the solid impurities scraped near the cathode can be discharged from the slag discharge port. A plurality of cathode plates 5 are distributed in a vertical array inside the descaling box 1. The cathode plates 5 are insulated from the side walls of the descaling box 1, and the cathode plates 5 are electrically connected to the cathode of the power supply. The cathode plates 5 extend horizontally so that the upper and lower sides thereof are The side has a larger surface area, so that cations are more easily deposited on the upper and lower sides. An anode plate 6 is provided between the adjacent cathode plates 5, and the anode plate 6 is electrically connected to the anode of the power supply. After such a structure is energized, the cations that are easy to scale will be deposited on the cathode plate 5 to form solids under the action of the electric field, thereby solidifying and separating the cations that are easy to scale in the circulating water, reducing the hardness of the circulating water, and reducing the impact of its scaling on the cooling equipment. The cathode plate 5 and the anode plate 6 are both provided with a through port 7, and the through port 7 penetrates the cathode plate 5 and the anode plate 6, so that the circulating water entering the descaling box 1 passes through the through port 7 and flows toward the water outlet pipe 3. The through ports 7 on the adjacent cathode plates 5 and the anode plates 6 are staggered. Such a structure makes the flow path of the circulating water in the descaling box 1 become tortuous, so that the circulating water can fully contact the upper and lower sides of the cathode plate 5, further increasing the surface area near the cathode, increasing the amount of solids that can be deposited, reducing the frequency of later cleaning, and at the same time extending the flow path of the circulating water, improving the deposition and separation effect of the cations that are easy to scale in the circulating water;

[0031] A cavity 8 is provided inside the cathode plate 5, and a movable plate 9 is connected to the cavity 8 in a vertical sliding manner. The movable plate 9 can move up and down in the cavity 8, and its cross-sectional size is adapted to the cross-sectional size of the cavity 8. The movable plate 9 is electrically connected to the cathode plate 5, so that the movable plate 9 always maintains an electrical connection with the cathode plate 5 during the up and down movement. A plurality of deposition holes 10 are symmetrically provided on the upper and lower sides of the cathode plate 5, and the deposition holes 10 are connected to the cavity 8. The deposition holes 10 are connected to the cavity 8 after penetrating the cathode plate 5. A plurality of deposition columns 11 used in conjunction with the deposition holes 10 are symmetrically welded or integrally formed on the upper and lower sides of the movable plate 9, and the deposition columns 11 are electrically connected to the movable plate 9, so that the movable plate 9 and the plurality of deposition columns 11 thereon are also The deposition column 11 is a part of the cathode, and is slidably connected in the deposition hole 10, that is, the side wall of the deposition column 11 is in sliding contact with the side wall of the deposition hole 10. Preferably, in order to prevent the circulating water from entering the cavity 8, a sealing ring used in conjunction with the deposition column 11 is arranged at the end position of the deposition hole 10 in the cavity 8, so that the cavity 8 forms a relatively sealed space, and the circulating water is prevented from entering the cavity 8, thereby causing the scaling cations in the circulating water to be deposited in the cavity 8 to form solids, so that the deposited solids only exist on the surface of the cathode plate 5, reducing the difficulty of later cleaning. Such a structure enables the moving plate 9 to drive the deposition columns 11 on the upper and lower sides to move during the water treatment process, so that the deposition column 11 on one side extends out of the deposition hole 10 to form a bulge on the surface of the cathode plate 5, and the other side After the sedimentation column 11 shrinks to the inside of the sedimentation hole 10, a depression is formed on the surface of the cathode plate 5, so that the surface of the cathode plate 5 forms a concave-convex shape, which greatly increases the surface area of ​​the upper and lower sides of the cathode plate 5, so that the easily scaling cations in the circulating water can be deposited on the surface of the sedimentation column 11 or the surface of the sedimentation hole 10 to form solids, thereby increasing the range of solid deposition, increasing the amount of solids that can be accommodated, and reducing the frequency of cleaning the cathode. At the same time, when cleaning is required, the moving plate 9 drives the sedimentation column 11 to move, so that the protruding sedimentation column 11 enters the sedimentation hole 10, and the solids on the side of the protruding sedimentation column 11 are scraped off by using the side wall of the sedimentation hole 10, and the concave sedimentation column 11 extends from the sedimentation hole 10, and the solids on the inner wall of the sedimentation hole 10 are scraped off by using the sedimentation column 11 , thereby improving the convenience of cleaning the concave and convex parts on the cathode plate 5 and greatly reducing the difficulty of cleaning. When the movable plate 9 slides, the ends of the deposition columns 11 on the upper and lower sides can be aligned with the ends of the deposition holes 10 on the upper and lower sides at the same time, that is, when the movable plate 9 slides, the ends of the deposition columns 11 away from the cavity 8 can be flush with the upper and lower surfaces of the cathode plate 5, so that the solids on the ends of the deposition columns 11 and the solids on the surface of the cathode plate 5 are in the same plane, so that the surface of the cathode plate 5 becomes flat, preparing for subsequent unified cleaning. The descaling box 1 is provided with an outer shaft body 12 for driving multiple movable plates 9 to slide up and down at the same time. The outer shaft body 12 is used to simultaneously drive multiple movable plates 9 to slide, so that multiple cathode plates 5 can be switched to a descaling state or a cleaning state at the same time.It is convenient for synchronous cleaning operation of multiple cathode plates 5. The upper and lower sides of the cathode plates 5 are symmetrically connected with scrapers 13 through bearings. When the end of the deposition column 11 is aligned with the end of the deposition hole 10, the scraper 13 slides and contacts with the cathode plate 5. When the end of the deposition column 11 is aligned with the end of the deposition hole 10, that is, when the end of the deposition column 11 away from the cavity 8 is flush with the surface of the cathode plate 5, the scraper 13 rotates and moves. The scraper 13 is used to scrape off the solids on the flat surface of the cathode plate 5, so as to achieve comprehensive and thorough cleaning of the solids on the concave and convex surface of the cathode plate 5. The structure is simple and the operation is convenient, which greatly reduces the frequency and difficulty of cleaning and ensures the effect of electrochemical descaling of circulating water.

[0032] Preferably, the outer shaft body 12 penetrates the cathode plate 5 and is rotatably connected to the movable plate 9 through a bearing. Such a structure enables the outer shaft body 12 to not only drive multiple movable plates 9 to slide, but also to rotate around its own center line. The upper and lower sides of the cathode plate 5 are symmetrically connected to a swivel 14 through a bearing. The swivel 14 is sleeved on the outside of the outer shaft body 12, and the scraper 13 is fixed to the swivel 14 by welding or bolts. A positioning component is provided between the outer shaft body 12 and the swivel 14. Such a structure enables the outer shaft body 12 to drive multiple movable plates 9 to slide. After the movable plate 9 slides to make the surfaces of the multiple cathode plates 5 flat, the outer shaft 12 is connected to the swivel 14 through the positioning assembly. At this time, the rotation of the outer shaft 12 can be used to drive the scraper 13 to rotate synchronously, while the movable plate 9 and the multiple deposition columns 11 remain stationary, thereby realizing the sliding drive of the movable plate 9 and the rotation drive of the scraper 13 by the outer shaft 12, which greatly simplifies the complexity of the driving device, saves the internal space of the descaling box 1, improves the smoothness of the sliding of the movable plate 9 and the rotation of the scraper 13, and improves the convenience of cleaning the cathode plate 5.

[0033] Preferably, refer to Figure 7 and Figure 8The positioning assembly includes a positioning block 15 and a positioning groove 16. The positioning block 15 is welded or integrally formed and fixed on the outer wall of the outer shaft body 12. The positioning groove 16 is provided on the inner wall of the rotating ring 14. Specifically, the positioning groove 16 is formed by the inner wall of the rotating ring 14 being recessed inward. In order to ensure that the outer shaft body 12 can smoothly drive the deposition column 11 to shrink into the deposition hole 10, the position on the cathode plate 5 penetrated by the outer shaft body 12 is also provided with a positioning groove 16, so that when the deposition column 11 shrinks into the interior of the deposition hole 10, the positioning block 15 on the outer shaft body 12 can pass through the rotating ring 14 in sequence. The positioning block 15 enters the interior of the cathode plate 5 after entering the positioning groove 16 on the cathode plate 5, so that the positioning block 15 will not interfere with the movement of the cathode plate 5. When the end of the deposition column 11 is aligned with the end of the deposition hole 10, the positioning block 15 enters the positioning groove 16. With this structure, when the outer shaft body 12 slides, the positioning block 15 aligned in the vertical direction can accurately enter the positioning groove 16, so that the outer shaft body 12 and the rotating ring 14 are integrated in the lateral direction, and the scraper 13 on the rotating ring 14 is accurately driven in rotation. The structure is simple, which makes the positioning operation of the outer shaft body 12 and the rotating ring 14 more convenient and firm.

[0034] Preferably, refer to Figure 3 and Figure 4 The interior of the descaling box 1 is rotatably connected with a rotating shaft 17 through a bearing, and the rotating shaft 17 is driven to rotate by a motor. A slide groove 18 is provided inside the outer shaft body 12, so that the outer shaft body 12 becomes a hollow pipe sleeve structure. The rotating shaft 17 is slidably connected in the slide groove 18, so that the outer shaft body 12 can slide relative to the rotating shaft 17 along the axial direction. A telescopic rod 19 is provided between the end of the rotating shaft 17 and the end of the slide groove 18. Specifically, a cylinder or an electric cylinder structure can be adopted. The telescopic rod 19 is fixed to the rotating shaft 17 by welding or bolts. At the bottom end of the shaft 17, the movable end of the telescopic rod 19 is welded or bolted to the bottom end of the slide groove 18, and the telescopic movement of the telescopic rod 19 is used to realize the sliding drive of the outer shaft body 12. A limit assembly is provided between the rotating shaft 17 and the slide groove 18, and the limit assembly is used to limit the lateral relative position of the rotating shaft 17 and the outer shaft body 12, so as to ensure that the outer shaft body 12 can slide vertically relative to the rotating shaft 17, and the two keep synchronization when rotating around the center line, thereby ensuring the smoothness and stability of the sliding and rotating movements of the outer shaft body 12.

[0035] Preferably, the limit assembly includes a limit bar 20 and a limit groove 21. The limit bar 20 is symmetrically fixed to the side of the rotating shaft 17 by welding or integral molding. The limit groove 21 is symmetrically arranged on the side wall of the slide groove 18. The limit groove 21 is formed by the inner wall of the slide groove 18 being recessed inwardly. The limit bar 20 is slidably connected to the limit groove 21. Such a structure enables the limit groove 21 to slide relative to the limit bar 20 when the outer shaft body 12 slides relative to the rotating shaft 17, and the lateral restrictions of the two ensure the synchronous rotation drive of the outer shaft body 12 when the rotating shaft 17 rotates, so that the rotation of the outer shaft body 12 relative to the rotating shaft 17 is more stable and the overall structure runs more smoothly.

[0036] Preferably, a support ring 22 for use with the outer shaft body 12 is fixed to the bottom of the descaling box 1 by welding or bolts, and the bottom of the outer shaft body 12 extends into the support ring 22, and the bottom end of the outer shaft body 12 can slide up and down and rotate in the support ring 22, so that the support ring 22 provides effective support for the end of the outer shaft body 12, ensuring the stability of the outer shaft body 12 when sliding up and down and rotating, thereby ensuring the firmness of the sliding movement of multiple movable plates 9 and the rotation movement of multiple scrapers 13, and improving the accuracy of the cooperation between the deposition column 11 and the deposition hole 10.

[0037] Preferably, a conductive plate 23 is provided on the inner wall of the cavity 8, and the conductive plate 23 is a conductor. It is fixed to the inner wall of the cavity 8 by welding or bolts so that it is electrically connected to the cathode plate 5. A conductive column 24 is welded or bolted on the movable plate 9, and the conductive column 24 is electrically connected to the movable plate 9. The conductive column 24 is in contact with the conductive plate 23. Such a structure ensures that the conductive column 24 always maintains contact with the conductive plate 23 when the movable plate 9 slides up and down in the cavity 8, so that the movable plate 9 always maintains an electrically connected state with the cathode plate 5, and further enables the scaling cations to be accurately deposited on the deposition column 11, thereby ensuring the accuracy of the cation separation treatment in the circulating water.

[0038] Preferably, refer to Figure 5 and Figure 6, conductive rods 25 are symmetrically connected to the two sides of the conductive column 24 through a pin or a hinge for rotation, and a compression spring 26 is provided between the conductive rod 25 and the conductive column 24. Under the action of the compression spring 26, the conductive rod 25 maintains a contact state with the conductive plate 23, and the end of the conductive rod 25 is rotatably connected to a contact ball 27 through a pin. A guide groove 28 is provided on the conductive plate 23, and the guide groove 28 is formed by an inward depression of the surface of the conductive plate 23. The contact ball 27 is rollingly connected in the guide groove 28. In the process of the movable plate 9 moving up and down, such a structure utilizes the elastic force of the compression spring 26 to make the contact ball 27 at the end of the conductive rod 25 maintain rolling contact with the guide groove 28, thereby improving the smoothness of the up and down sliding movement of the movable plate 9 and ensuring the stability of the electrical connection state between the movable plate 9 and the cathode plate 5.

[0039] Preferably, an annular tube 29 is provided in the through port 7 on the cathode plate 5, and the annular tube 29 is connected to the external carbon dioxide intake device, and clean carbon dioxide is introduced into the intake device to prevent impurities from entering the circulating water. A plurality of aeration nozzles 30 are arranged in an array on the annular tube 29, and the aeration nozzles 30 are connected to the annular tube 29, so that the clean carbon dioxide gas can enter the surface of the cathode plate 5 through the plurality of aeration nozzles 30, so that it forms a sufficient number of carbonate ions, so that the deposition and fixation of the scaling cations in the circulating water are more thorough, and the effect of the electrochemical treatment of the circulating water is further improved.

[0040] Preferably, a busbar 31 is fixed to the outer wall of the descaling box 1 by welding or bolts, and multiple cathode plates 5 are connected in parallel through the busbar 31. Such a structure enables multiple cathode plates 5 to be separate cathode structures, so that when a certain cathode plate 5 is damaged, the cathode plates 5 at other positions can still operate normally, reducing the interference between the multiple cathode plates 5 and ensuring the stability of the operation of the overall structure.

[0041] Working principle: In the present invention, a plurality of cathode plates 5 are distributed in a vertical array in the descaling box 1, and an anode plate 6 is arranged between adjacent cathode plates 5. Both the cathode plates 5 and the anode plates 6 are provided with through holes 7, and the through holes 7 on adjacent cathode plates 5 and anode plates 6 are arranged in a staggered manner. Such a structure enables the circulating water to continue to flow after passing through the through holes 7 on the plurality of cathode plates 5 and the anode plates 6 after entering the descaling box 1 from the water inlet pipe 2, thereby making full contact with the upper and lower sides of the cathode plates 5, extending the flow path of the circulating water, increasing the contact area with the cathode plates 5, thereby increasing the amount of solids that can be deposited, reducing the frequency of cleaning solids near the cathode, and greatly reducing the difficulty and workload of later maintenance; on the cathode plates 5 A cavity 8 is arranged inside the cavity 8, a movable plate 9 is vertically slidably connected inside the cavity 8, the movable plate 9 is electrically connected to the cathode plate 5, a plurality of deposition holes 10 are symmetrically arranged on the upper and lower sides of the cathode plate 5, a plurality of deposition columns 11 are symmetrically arranged on the upper and lower sides of the movable plate 9, the deposition columns 11 are slidably connected inside the deposition holes 10, and the deposition columns 11 can be extended to the outside of the deposition holes 10 or retracted into the inside of the deposition holes 10 driven by the movable plate 9. Such a structure makes it possible for a plurality of protruding deposition columns 11 and concave deposition holes 10 to appear on the surface of the cathode plate 5 when the movable plate 9 moves, thereby greatly increasing the surface area near the cathode, so that cations can be deposited on the surface of the cathode plate 5 to form solids, and can also be deposited on the deposition columns 11 or Solids are formed in the deposition hole 10, thereby greatly increasing the amount of solids that can be deposited near the cathode and reducing the frequency of cleaning. At the same time, when cleaning is needed, the movable plate 9 is used to drive the deposition column 11 to move, so that the protruding deposition column 11 shrinks and enters the deposition hole 10, and the recessed deposition column 11 extends from the deposition hole 10. During the above movement, the inner wall of the deposition hole 10 scrapes off the solids on the side wall of the protruding deposition column 11, and the recessed deposition column 11 scrapes off the solids deposited on the inner wall of the deposition hole 10, thereby making it easier to clean the protruding or recessed parts on the cathode plate 5, greatly reducing the difficulty and workload of cleaning, making the cleaning of the deposited solids more thorough, and ensuring the electrochemical descaling of the circulating water. effect; when the movable plate 9 slides, the ends of the deposition columns 11 on the upper and lower sides can be aligned with the ends of the deposition holes 10 on the upper and lower sides at the same time, that is, the ends of the deposition columns 11 on the upper and lower sides are flush with the surface of the cathode plate 5, so that the solids deposited on the sides of the deposition columns 11 and the deposition holes 10 are automatically scraped off, and the upper and lower sides of the cathode plate 5 become flat. At this time, the scraper 13 is driven to rotate so that the scraper 13 is in sliding contact with the flat surface of the cathode plate 5, thereby scraping off the solids in the area outside the deposition holes 10 on the cathode plate 5 and on the ends of the deposition columns 11, so that the cleaning of the solids on the cathode structure is more comprehensive and thorough, reducing the residual amount of solids and the difficulty of cleaning, and ensuring the electrochemical descaling effect on the circulating water after long-term use.

Claims

1. An electrochemical descaling device for circulating water, comprising a descaling box (1), wherein the descaling box (1) is provided with a water inlet pipe (2) and a water outlet pipe (3), and a slag discharge pipe (4) is provided at the bottom of the descaling box (1), characterized in that: The descaling box (1) has a plurality of cathode plates (5) arranged in a vertical array inside, an anode plate (6) is arranged between adjacent cathode plates (5), and both the cathode plates (5) and the anode plates (6) are provided with through holes (7), and the through holes (7) on adjacent cathode plates (5) and anode plates (6) are arranged in a staggered manner, a cavity (8) is provided inside the cathode plate (5), a movable plate (9) is vertically slidably connected inside the cavity (8), and the movable plate (9) is electrically connected to the cathode plate (5), and a plurality of deposition holes (10) are symmetrically arranged on upper and lower sides of the cathode plate (5), and the deposition holes (10) are arranged in communication with the cavity (8). The movable plate (9) is symmetrically provided with a plurality of deposition columns (11) for use with the deposition holes (10) on the upper and lower sides. The deposition columns (11) are slidably connected in the deposition holes (10). When the movable plate (9) slides, the ends of the deposition columns (11) on the upper and lower sides can be aligned with the ends of the deposition holes (10) on the upper and lower sides at the same time. The descaling box (1) is provided with an outer shaft (12) for driving the plurality of movable plates (9) to slide up and down at the same time. The cathode plate (5) is symmetrically rotationally connected with a scraper (13) on the upper and lower sides. When the ends of the deposition columns (11) and the ends of the deposition holes (10) are aligned, the scraper (13) and the cathode plate (5) are in sliding contact.

2. An electrochemical descaling device for circulating water according to claim 1, characterized in that: The outer shaft (12) penetrates the cathode plate (5) and is rotatably connected to the movable plate (9); upper and lower sides of the cathode plate (5) are symmetrically rotatably connected with a rotating ring (14); the rotating ring (14) is sleeved on the outside of the outer shaft (12); the scraper (13) is fixed on the rotating ring (14); and a positioning component is provided between the outer shaft (12) and the rotating ring (14).

3. An electrochemical descaling device for circulating water according to claim 2, characterized in that: The positioning assembly comprises a positioning block (15) and a positioning groove (16); the positioning block (15) is arranged on the outer shaft (12); the positioning groove (16) is arranged on the rotating ring (14); when the end of the deposition column (11) and the end of the deposition hole (10) are aligned, the positioning block (15) enters the positioning groove (16).

4. An electrochemical descaling device for circulating water according to claim 2, characterized in that: A rotating shaft (17) is rotatably connected inside the descaling box (1), a sliding groove (18) is provided inside the outer shaft body (12), the rotating shaft (17) is slidably connected in the sliding groove (18), a telescopic rod (19) is provided between the end of the rotating shaft (17) and the end of the sliding groove (18), and a limiting component is provided between the rotating shaft (17) and the sliding groove (18).

5. An electrochemical descaling device for circulating water according to claim 4, characterized in that: The limiting assembly comprises a limiting strip (20) and a limiting groove (21), wherein the limiting strip (20) is symmetrically arranged on the side of the rotating shaft (17), and the limiting groove (21) is symmetrically opened on the side wall of the sliding groove (18), and the limiting strip (20) is slidably connected to the limiting groove (21).

6. The electrochemical descaling device for circulating water according to claim 2, characterized in that: A support ring (22) used in conjunction with the outer shaft body (12) is provided at the bottom of the descaling box (1), and the bottom of the outer shaft body (12) extends into the support ring (22).

7. The electrochemical descaling device for circulating water according to claim 1, characterized in that: A conductive plate (23) is provided on the inner wall of the cavity (8), and a conductive column (24) is provided on the movable plate (9), wherein the conductive column (24) is in contact with the conductive plate (23).

8. An electrochemical descaling device for circulating water according to claim 7, characterized in that: Conductive rods (25) are symmetrically rotatably connected to both sides of the conductive column (24); a compression spring (26) is provided between the conductive rod (25) and the conductive column (24); a contact ball (27) is rotatably connected to the end of the conductive rod (25); a guide groove (28) is provided on the conductive plate (23); and the contact ball (27) is rollingly connected in the guide groove (28).

9. The electrochemical descaling device for circulating water according to claim 1, characterized in that: An annular tube (29) is provided in the through opening (7) on the cathode plate (5), and a plurality of aeration nozzles (30) are distributed in an array on the annular tube (29).

10. The electrochemical descaling device for circulating water according to claim 1, characterized in that: A busbar (31) is provided on the outer side wall of the descaling box (1), and a plurality of cathode plates (5) are connected in parallel via the busbar (31).

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