Load-adjustable electrode hot water boiler

Abstract

The invention relates to the technical field of hot water boilers, and particularly discloses a load-adjustable electrode hot water boiler which comprises a boiler barrel, three zero electrode barrels, phase electrodes and a water distributor, the zero electrode barrels are annularly and evenly distributed in the boiler barrel, the phase electrodes are coaxially arranged in the zero electrode barrels, the water distributor is located under the zero electrode barrels, and the zero electrode barrels are arranged in the boiler barrel. A cylindrical isolation shield is assembled outside the water distributor in a sliding manner, and the isolation shield can rotate and lift relative to the water distributor and can be arranged outside the phase electrode in a sleeving manner during lifting; according to the load-adjustable electrode hot water boiler, the load of the boiler is adjusted by rotating and lifting the isolation shield and adjusting the blocking area of the zero electrode cylinder and the phase electrode piece, the vertical plate and the arc-shaped plate are matched with each other, the side face and the end face of the phase electrode are comprehensively cleaned in the lifting process of the isolation shield, and the working efficiency is improved. Condensation and accumulation of scale on the surface of the phase electrode are effectively prevented, the phase electrode keeps good conductive heating effect, and the service life of the phase electrode is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of hot water boilers, and in particular to a load-adjustable electrode hot water boiler. Background Art

[0002] Electrode hot water boiler is a device that uses the resistance between electrodes and water to generate heat to heat water. It has a wide range of applications in many fields. The basic working principle of electrode hot water boiler is based on the resistance characteristics of water. When the electrode is inserted into the water and the power is turned on, the current passes through the water. Since water has a certain resistance, the current will generate heat when it flows in the water. By controlling the voltage and current of the electrode, the heat generated can be accurately adjusted to achieve the purpose of heating the water.

[0003] The patent document with the authorization announcement number CN113865081B discloses an electrode boiler with automatic descaling, comprising: a furnace body with a water inlet and a water outlet, a cylindrical zero-position electrode located in the furnace body, a phase electrode coaxially arranged inside the zero-position electrode, and a driving mechanism, wherein: an insulating sleeve coaxial with the zero-position electrode and the phase electrode is provided between the zero-position electrode and the phase electrode, the insulating sleeve is connected to the driving mechanism and can move up and down under the drive of the driving mechanism, and an inner cleaning ring coaxially fixed with the insulating sleeve is provided inside the insulating sleeve; the phase electrode is located inside the inner cleaning ring, the insulating sleeve forms an isolation between the phase electrode and the zero-position electrode, and the driving mechanism drives the insulating sleeve to move up and down, thereby adjusting the contact area between the phase electrode and the zero-position electrode through the up and down movement of the insulating sleeve, thereby achieving the purpose of adjusting the power, and this adjustment has a fast response, sensitive action, and can achieve stepless adjustment. At the same time, by arranging the inner cleaning ring inside the insulating sleeve, the insulating sleeve cleans the surface of the phase electrode during the up and down movement, thereby preventing the phase electrode from affecting its normal operation due to scaling on the surface.

[0004] However, the following problems still exist in this scheme: the end face of the phase electrode is an arc-shaped surface, and the inner cleaning ring cannot cover the end face of the phase electrode when cleaning the phase electrode, and the cleaning of the phase electrode cannot be fully covered. The scale covers the end face of the phase electrode, which will cause uneven heat distribution on its surface, making the temperature in the local area too high, affecting the heating efficiency, and accelerating the aging and damage of the phase electrode. In addition, the inner cleaning ring is always attached to the surface of the phase electrode during operation, which will also cause phase electrode to phase electrode to block it, causing the same negative impact as scale, which is not conducive to the normal operation of the phase electrode. Summary of the invention

[0005] The present invention provides a load-adjustable electrode hot water boiler, aiming to solve the problem in the related art that the end surface of the phase electrode cannot be covered when cleaning the phase electrode, and the cleaning of the phase electrode cannot be fully covered.

[0006] The load-adjustable electrode hot water boiler of the present invention comprises a boiler drum, a zero electrode drum, a phase electrode and a water distributor, wherein the zero electrode drum has three rings evenly distributed inside the boiler drum, the phase electrode is coaxially arranged inside the zero electrode drum, the water distributor is located directly below the zero electrode drum, and a cylindrical isolation shield is slidably mounted on the outside of the water distributor, and the isolation shield can be rotated and lifted relative to the water distributor, and can be sleeved to the outside of the phase electrode during the rise to isolate ion migration between the phase electrode and the zero electrode drum;

[0007] A vertical plate and an arc plate are arranged on the top of the isolation shield. The vertical plate can slide along the radial direction of the isolation shield, close to the surface of the phase electrode or away from the phase electrode. The arc plate is rotatably arranged at the end of the vertical plate and can be attached to the arc end surface of the phase electrode as the isolation shield moves.

[0008] Preferably, a support and a base located below the support are fixedly installed inside the boiler drum, the zero electrode cylinder is fixedly installed on the support, and the water distributor is arranged on the base.

[0009] Preferably, a bracket is arranged above the base, a clamp is arranged on the bracket, and the isolation shield is rotatably assembled in the clamp.

[0010] Preferably, a lead screw is rotatably mounted inside the base, the bottom end of which extends to the outside of the drum and is provided with a servo motor, a nut is fixedly mounted inside the bracket, and the nut is threadedly connected to the outside of the lead screw.

[0011] Preferably, the water distributor is externally rotatably equipped with a turntable, a telescopic rod is fixedly installed on the top of the turntable, and the telescopic end of the telescopic rod is fixedly connected to the isolation shield, a gear ring is fixedly installed on the outside of the turntable, and a gear meshing with the gear ring is fixedly installed on the outside of the lead screw.

[0012] Preferably, a support block is fixedly installed on the top of the isolation shield, a cross bar is slidably arranged inside the support block, and the cross bar is laterally arranged along the radial direction of the isolation shield, a mounting plate located on one side of the support block is fixedly installed on the cross bar, a spring is arranged between the mounting plate and the support block, and the spring is in a compressed state, a vertical plate is fixedly installed on the end of the cross bar, and a torsion spring is arranged between the vertical plate and the arc plate, so as to apply a torsional force to the arc plate in the direction of the phase electrode.

[0013] Preferably, the outside of the isolation shield is slidably equipped with an annular plate along its height direction, a cylinder for driving the annular plate to be lifted and lowered is provided at the bottom of the annular plate, a wedge plate is fixedly installed on the top of the annular plate, and the side of the wedge plate away from the isolation shield is an inclined surface, a transverse groove is opened inside the cross bar along its length direction, and the top end of the wedge plate slides in the transverse groove.

[0014] Preferably, an electrode tube seat is fixedly installed on the top of the drum, a hollow electrode porcelain sleeve is fixedly installed in the electrode tube seat, the phase electrode is fixedly installed on the bottom end of the electrode porcelain sleeve, a Buddha's hand wire clamp is arranged on the top end of the electrode porcelain sleeve, and a conductive copper rod is arranged between the Buddha's hand wire clamp and the phase electrode.

[0015] Preferably, the outside of the electrode porcelain sleeve is provided with a raised ring seat located inside the electrode tube seat, and sealing rings are provided on both the upper and lower sides of the raised ring seat, and the surface of the sealing ring close to the raised ring seat is a spherical arc surface, away from the surface plane of the raised ring seat.

[0016] Preferably, an upper insulating sheath is provided at the bottom of the electrode tube seat, and a lower insulating sheath is provided at the top of the water distributor.

[0017] Beneficial effects:

[0018] 1. When the present invention is in use, the blocking area between the zero electrode cylinder and the phase electrode is adjusted by rotating and lifting the isolation shield to achieve the adjustment of the boiler load. The vertical plate and the arc plate cooperate with each other to comprehensively clean the side and end faces of the phase electrode during the lifting of the isolation shield, effectively preventing scale from condensing and accumulating on the surface of the phase electrode, so that the phase electrode maintains a good conductive heating effect and increases the service life of the phase electrode. The vertical plate and the arc plate can form a vortex with the electrolyte aqueous solution in the zero electrode cylinder during rotation, so that the cleaned scale can be quickly separated from the phase electrode, the vertical plate and the arc plate, and then discharged together with the electrolyte aqueous solution, avoiding the accumulation of scale at the contact part of the vertical plate, the arc plate and the phase electrode after scraping.

[0019] 2. When the present invention is in use, the lifting of the wedge plate can push the cross bar to slide in the support block, so that the vertical plate can be moved away from the phase electrode when it does not need to be cleaned, avoiding the phase electrode from being blocked by a large area of ​​the vertical plate during work, so that the heat on the surface of the phase electrode can be evenly distributed, maintaining a good working state.

[0020] 3. When the present invention is in use, the spherical arc surface of the sealing ring contacts the raised ring seat, thereby achieving spherical sealing between the raised ring seat and the sealing ring, thereby reducing friction and improving wear resistance, so that the sealing ring can better adapt to harsh environments such as high pressure and high temperature, and the sealing ring can be suitable for spans of different angles. The electrode porcelain sleeve can flexibly adjust the angle during assembly and ensure sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a perspective view of the present invention.

[0022] Figure 2 It is a front view of the present invention.

[0023] Figure 3 It is a side view of the present invention.

[0024] Figure 4 The present invention Figure 3 sectional view of .

[0025] Figure 5 The present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Figure 6 It is a three-dimensional diagram of the interior of the drum of the present invention.

[0027] Figure 7 The present invention Figure 6 Front view of .

[0028] Figure 8 It is a three-dimensional diagram of the isolation shield and the bracket of the present invention.

[0029] Fig. 9 It is a stereoscopic diagram of the isolation shield and the phase electrode of the present invention.

[0030] Fig.10 The present invention Fig. 9 Schematic diagram of the enlarged structure at point B in the middle.

[0031] Reference numerals:

[0032] 10. Boiler drum; 11. Zero electrode drum; 12. Phase electrode; 13. Water distributor; 14. Support; 15. Base; 151. Drain connecting pipe; 152. Cone; 16. Electrode tube seat; 17. Upper insulating sheath; 18. Lower insulating sheath; 20. Isolation power adjustment component; 21. Bracket; 22. Isolation shield; 23. Hoop; 30. Driving mechanism; 31. Servo motor; 32. Lead screw; 33. Nut; 40. Transmission mechanism; 41. Turntable; 42. Telescopic rod; 43 , gear ring; 44, gear; 50, cleaning mechanism; 51, support block; 52, cross bar; 521, mounting plate; 522, spring; 523, transverse groove; 53, scraper; 531, vertical plate; 532, arc plate; 60, pushing mechanism; 61, annular plate; 62, cylinder; 63, wedge plate; 70, electrode insulation device; 71, conductive copper rod; 72, electrode porcelain sleeve; 73, Buddha's hand wire clamp; 74, sealing assembly; 741, raised ring seat; 742, sealing ring. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 10As shown, the load-adjustable electrode hot water boiler of the present invention includes a boiler drum 10, a zero electrode drum 11, a phase electrode 12, a water distributor 13, an isolated power regulating component 20, a driving mechanism 30, a transmission mechanism 40, a cleaning mechanism 50 and a pushing mechanism 60. The zero electrode drum 11 and the phase electrode 12 are correspondingly arranged in the boiler drum 10 for heating the electrolyte aqueous solution. The water distributor 13 is located below the zero electrode drum 11 for dispersing and conveying the electrolyte aqueous solution. The isolated power regulating component 20 is arranged below the zero electrode drum 11 and can adjust the boiler load under the drive of the driving mechanism 30. The cleaning mechanism 50 is arranged on the isolated power regulating component 20 and can clean the scale outside the phase electrode 12 under the action of the transmission mechanism 40 and can be moved away from the phase electrode 12 under the action of the pushing mechanism 60.

[0035] refer to Figure 4 , Figure 6 , Figure 7 as well as Fig. 9 A support 14 and a base 15 are fixedly installed inside the boiler drum 10. The support 14 is located in the middle part of the boiler drum 10, and the base 15 is located in the lower end head of the boiler drum 10. The zero electrode cylinder 11 is fixedly installed on the support 14. There are three zero electrode cylinders 11 and they are evenly distributed in a ring shape. An electrode tube seat 16 is arranged on the top of the boiler drum 10. An electrode insulating device 70 is arranged in the electrode tube seat 16. The phase electrode 12 is hoisted in the middle of the zero electrode cylinder 11 through the electrode insulating device 70. A water distributor 13 is arranged on the base 15, and there are three water distributors 13 correspondingly arranged directly below the three zero electrode cylinders 11. A water inlet pipe and a sewage outlet are arranged at the bottom of the boiler drum 10, and a water outlet pipe is arranged at the top of the boiler drum 10, so that the electrolyte aqueous solution enters from the bottom of the boiler drum 10 and is discharged from the top for circulation.

[0036] The base 15 is circular, and a water discharge connecting pipe 151 and a cone 152 are provided on the base 15 .

[0037] The drain connecting pipe 151 has multiple circumferences evenly distributed at the bottom of the base 15, connecting the upper and lower sides of the base 15, so that the electrolyte aqueous solution in the drum 10 can enter the bottom through the drain connecting pipe 151, and then be discharged from the sewage outlet at the bottom of the drum 10. At the same time, the drain connecting pipe 151 can also play a role in supporting the base 15.

[0038] The cone 152 is arranged just above the water inlet at the bottom of the drum 10, with the pointed tip facing downward, which can effectively disperse the impact force of the incoming water to a larger area, reduce the impact of the incoming water on the flat plate, and further protect the structural stability.

[0039] An upper insulating sheath 17 is provided at the bottom of the electrode tube holder 16, and a lower insulating sheath 18 is provided at the top of the water distributor 13. Both the upper insulating sheath 17 and the lower insulating sheath 18 are made of polytetrafluoroethylene insulating material, which can insulate and extend the water current path.

[0040] refer to Figure 4 , Figure 7 as well as Figure 8 The isolation power regulating assembly 20 includes a bracket 21, an isolation shield 22 and a clamp 23. The bracket 21 is located above the base 15. There are three isolation shields 22 and they are all cylindrical. The isolation shields 22 are rotatably assembled on the bracket 21 through the clamp 23. The three isolation shields 22 are respectively mounted on the outside of the three water distributors 13, and can move up and down relative to the water distributors 13, so that the top of the isolation shield 22 extends into the zero electrode cylinder 11 and is mounted on the outside of the phase electrode 12, so as to isolate the zero electrode cylinder 11 from the phase electrode 12 and adjust the load of the boiler.

[0041] refer to Figure 4 , Figure 7 as well as Figure 8 The driving mechanism 30 includes a servo motor 31, a lead screw 32, and a nut 33. The servo motor 31 is fixedly installed at the bottom of the drum 10. The lead screw 32 is rotatably assembled between the drum 10 and the base 15. The bottom end of the lead screw 32 is connected to the servo motor 31 through a coupling. The nut 33 is threadedly connected to the lead screw 32 and fixed to the bracket 21. The servo motor 31 can drive the lead screw 32 to rotate, push the nut 33 to move up and down, drive the bracket 21 and the isolation shield 22 to move up and down, and adjust the height of the isolation shield 22.

[0042] refer to Figure 6 as well as Figure 7 The transmission mechanism 40 includes a turntable 41, a telescopic rod 42, a ring gear 43 and a gear 44. The turntable 41 is rotatably assembled on the outside of the water distributor 13. The telescopic rod 42 is fixedly mounted on the top of the turntable 41, and the telescopic end of the telescopic rod 42 is fixedly connected to the isolation shield 22, so that the turntable 41 can drive the isolation shield 22 to rotate without affecting the lifting of the isolation shield 22. The ring gear 43 is fixedly mounted on the turntable 41, and the gear 44 is fixedly mounted on the lead screw 32 and meshed with the ring gear 43. When the lead screw 32 pushes the isolation shield 22 to rise and fall, the gear 44 can be driven to rotate, so as to push the ring gear 43 to drive the turntable 41 to rotate, so that the isolation shield 22 can rotate while being lifted and lowered, so that the cleaning mechanism 50 can clean the phase electrode 12.

[0043] refer to Fig. 9 and Fig.10The cleaning mechanism 50 includes a support block 51, a cross bar 52 and a scraper 53. The support block 51 is fixedly mounted on the top of the isolation shield 22. The cross bar 52 is slidably disposed in the support block 51 in the radial direction of the isolation shield 22. The scraper 53 is disposed at the end of the cross bar 52 and is close to the phase electrode 12. The scale adhering to the outside of the phase electrode 12 can be scraped off during the rotation and lifting of the isolation shield 22, so that the scale can be discharged to the outside of the drum 10 along with the movement of the electrolyte aqueous solution. A mounting plate 521 located on one side of the support block 51 is fixedly mounted on the cross bar 52. A spring 522 is disposed between the mounting plate 521 and the support block 51, and the spring 522 is in a compressed state, applying a thrust to the mounting plate 521 in the direction of the phase electrode 12, so that the scraper 53 can be in close contact with the side wall of the phase electrode 12.

[0044] The scraper 53 is composed of a vertical plate 531 and an arcuate plate 532. The vertical plate 531 is fixedly mounted on the end of the cross bar 52, and the side of the vertical plate 531 close to the phase electrode 12 is an arcuate surface, so that the vertical plate 531 can be closely attached to the side of the phase electrode 12, and then the side of the phase electrode 12 can be better cleaned. The arcuate plate 532 has two upper and lower ends respectively rotatably assembled on the vertical plate 531. The two arcuate plates 532 are respectively adapted to the curvature of the upper and lower end surfaces of the phase electrode 12, and a torsion spring is arranged between the arcuate plate 532 and the vertical plate 531, which can apply a torsional force to the arcuate plate 532 in the direction of the phase electrode 12, so that when the arcuate plate 532 moves to the end of the phase electrode 12, it can be rotated and attached to the arcuate end surface of the phase electrode 12 under the push of the torsion spring, thereby completing the cleaning of the arcuate end surface of the phase electrode 12.

[0045] refer to Fig. 9 and Fig.10 The pushing mechanism 60 includes an annular plate 61, a cylinder 62 and a wedge plate 63. The annular plate 61 slides up and down outside the isolation shield 22. The cylinder 62 is arranged at the bottom of the annular plate 61 and fixed to the isolation shield 22. The wedge plate 63 is fixedly installed on the top of the annular plate 61. The side of the wedge plate 63 away from the isolation shield 22 is an inclined surface, and its width gradually increases from top to bottom. The interior of the cross bar 52 is provided with a transverse groove 523 along its length direction. The top end of the wedge plate 63 is arranged in the transverse groove 523. When the cylinder 62 pushes the annular plate 61 to rise and the wedge plate 63 slides in the transverse groove 523, the wedge plate 63 can push the cross bar 52 to slide in the support block 51, so that the vertical plate 531 is away from the phase electrode 12, reducing the contact area between the cleaning mechanism 50 and the phase electrode 12, and avoiding affecting the work done by the phase electrode 12.

[0046] refer to Figure 4 and Fig. 9The electrode insulation device 70 consists of a conductive copper rod 71, an electrode porcelain bushing 72, a Buddha's hand wire clamp 73 and a sealing assembly 74. The electrode porcelain bushing 72 is vertically fixed to the electrode tube seat 16 through a flange. The bottom end of the electrode porcelain bushing 72 extends to the inside of the drum 10. The phase electrode 12 is fixedly installed at the bottom end of the electrode porcelain bushing 72. The Buddha's hand wire clamp 73 is arranged at the top end of the electrode porcelain bushing 72 for connecting the high-voltage incoming cable. The conductive copper rod 71 passes through the interior of the electrode porcelain bushing 72, and its upper and lower ends are respectively fixed to the Buddha's hand wire clamp 73 and the phase electrode 12 to connect the Buddha's hand wire clamp 73 to the phase electrode 12. The sealing assembly 74 is located between the electrode porcelain bushing 72 and the electrode tube seat 16, and can seal the electrode porcelain bushing 72 and the electrode tube seat 16.

[0047] The sealing assembly 74 includes a raised ring seat 741 and a sealing ring 742. The raised ring seat 741 is arranged outside the electrode porcelain sleeve 72. The sealing ring 742 has two sealing rings 742 respectively arranged on the upper and lower sides of the raised ring seat 741. The surface of the sealing ring 742 close to the raised ring seat 741 is a spherical arc surface, and the surface away from the raised ring seat 741 is a plane, thereby realizing a spherical seal between the raised ring seat 741 and the sealing ring 742, thereby reducing friction and having stronger wear resistance, so that the sealing ring 742 can better adapt to harsh environments such as high pressure and high temperature, and make the sealing ring 742 suitable for spans of different angles. The electrode porcelain sleeve 72 can flexibly adjust the angle during assembly to ensure sealing performance.

[0048] In the present invention, three-phase alternating current is introduced into the phase electrode 12 at the center of the zero electrode cylinder 11 through the electrode insulation device 70. The three zero electrode cylinders 11 are evenly distributed in the drum 10 in three equal parts around the entire circumference. The distance from the outer surface of each phase electrode 12 to the inner wall of the zero electrode cylinder 11 where it is located is equal. After power is turned on, under the action of the electric field force, the ion migration cross section and distance of the electrolyte aqueous solution in the zero electrode cylinder 11 are equal, the heating is uniform, the three-phase load is equal, and the three-phase balance is high. The three zero electrode cylinders 11 form a whole, and form a current loop with the phase electrode 12 and the electrolyte aqueous solution after power is turned on. The zero electrode cylinder 11 is the common neutral point for the electrode to work, forming a Y-type connection method, which can perfectly adapt to the input alternating current.

[0049] The isolation shield 22 is driven to move up and down by the driving mechanism 30 to block the current channel between the isolation zero electrode cylinder 11 and the phase electrode 12. As the isolation shield 22 rises, the blocking area between the zero electrode cylinder 11 and the phase electrode 12 increases, the current path is extended, and the power load during boiler heating is reduced; as the isolation shield 22 descends, the blocking area between the zero electrode cylinder 11 and the phase electrode 12 decreases, the current path is shortened, and the power load during boiler heating is increased, thereby achieving boiler load regulation;

[0050] When the isolation shield 22 is lifted, the vertical plate 531, under the action of the spring 522, is in close contact with the side wall of the phase electrode 12, and can clean the scale on the surface of the phase electrode 12. The end of the arc plate 532 is blocked by the phase electrode 12, and then rotates in the vertical plate 531 to compress the torsion spring, so that the torsion spring maintains the torsion force on the arc plate 532. The transmission mechanism 40 drives the isolation shield 22 to rotate during the lifting, so that the vertical plate 531 can rotate around the phase electrode 12 to clean its circumference and increase the cleaning area. When the vertical plate 531 moves to the end of the phase electrode 12, the arc plate 532 is torsionally rotated. Under the action of the spring, it automatically sticks to the arc-shaped end face of the phase electrode 12, moves with the rotating vertical plate 531, and cleans the end face of the phase electrode 12 to ensure that the scale on the surface of the phase electrode 12 is thoroughly cleaned. At the same time, when the vertical plate 531 and the arc plate 532 rotate, they can stir the electrolyte aqueous solution in the zero electrode cylinder 11 to form a vortex, and then flush the scale on the vertical plate 531 and the arc plate 532, so that the scale can be quickly separated after being cleaned from the phase electrode 12, so that the scale can be better discharged with the electrolyte aqueous solution, and effectively avoid the accumulation of a large amount of scale outside the phase electrode 12 to form a scale layer;

[0051] By raising the wedge plate 63, the cross bar 52 is pushed to move in the support block 51, so that the vertical plate 531 can be kept away from the surface of the phase electrode 12, and the vertical plate 531 can be prevented from blocking the phase electrode 12 during the use of the boiler, thereby ensuring the uniformity of the work done by the phase electrode 12. When the phase electrode 12 needs to be cleaned, the wedge plate 63 is lowered to contact the thrust of the cross bar 52, and the vertical plate 531 can automatically stick to the surface of the phase electrode 12 under the action of the spring 522 to facilitate the cleaning of scale.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A load-adjustable electrode hot water boiler, comprising a boiler drum (10), a zero electrode drum (11), a phase electrode (12) and a water distributor (13), wherein the zero electrode drum (11) has three rings evenly distributed inside the boiler drum (10), the phase electrode (12) is coaxially arranged inside the zero electrode drum (11), and the water distributor (13) is located directly below the zero electrode drum (11), characterized in that: A cylindrical isolation shield (22) is slidably mounted on the outside of the water distributor (13), and the isolation shield (22) can be rotated and raised relative to the water distributor (13), and can be sleeved onto the outside of the phase electrode (12) during the rise to isolate ion migration between the phase electrode (12) and the zero electrode cylinder (11); A vertical plate (531) and an arc-shaped plate (532) are arranged on the top of the isolation shield (22); the vertical plate (531) can slide along the radial direction of the isolation shield (22) to be closely attached to the surface of the phase electrode (12) or to be away from the phase electrode (12); and the arc-shaped plate (532) is rotatably arranged at the end of the vertical plate (531) and can be attached to the arc-shaped end surface of the phase electrode (12) as the isolation shield (22) moves.

2. The load-adjustable electrode hot water boiler according to claim 1, characterized in that: A support (14) and a base (15) located below the support (14) are fixedly mounted inside the boiler drum (10); the zero electrode drum (11) is fixedly mounted on the support (14); and the water distributor (13) is arranged on the base (15).

3. The load-adjustable electrode hot water boiler according to claim 2, characterized in that: A bracket (21) is arranged above the base (15), a hoop (23) is arranged on the bracket (21), and the isolation shield (22) is rotatably assembled in the hoop (23).

4. The load-adjustable electrode hot water boiler according to claim 3, characterized in that: A lead screw (32) is rotatably mounted inside the base (15), the bottom end of the lead screw (32) extends to the outside of the drum (10) and is provided with a servo motor (31), a nut (33) is fixedly mounted inside the bracket (21), and the nut (33) is threadedly connected to the outside of the lead screw (32).

5. The load-adjustable electrode hot water boiler according to claim 4, characterized in that: The water distributor (13) is rotatably mounted on the outside of a turntable (41), a telescopic rod (42) is fixedly mounted on the top of the turntable (41), and the telescopic end of the telescopic rod (42) is fixedly connected to the isolation shield (22), a gear ring (43) is fixedly mounted on the outside of the turntable (41), and a gear (44) meshing with the gear ring (43) is fixedly mounted on the outside of the lead screw (32).

6. The load-adjustable electrode hot water boiler according to claim 1, characterized in that: A support block (51) is fixedly mounted on the top of the isolation shield (22); a cross bar (52) is slidably mounted inside the support block (51), and the cross bar (52) is transversely mounted along the radial direction of the isolation shield (22); a mounting plate (521) located on one side of the support block (51) is fixedly mounted on the cross bar (52); a spring (522) is arranged between the mounting plate (521) and the support block (51), and the spring (522) is in a compressed state; a vertical plate (531) is fixedly mounted on an end of the cross bar (52); a torsion spring is arranged between the vertical plate (531) and the arc plate (532), and a torsion force is applied to the arc plate (532) in the direction of the phase electrode (12).

7. The load-adjustable electrode hot water boiler according to claim 6, characterized in that: The outside of the isolation shield (22) is slidably mounted with an annular plate (61) along its height direction, a cylinder (62) for driving the annular plate (61) to be raised and lowered is arranged at the bottom of the annular plate (61), a wedge plate (63) is fixedly mounted on the top of the annular plate (61), and a side of the wedge plate (63) away from the isolation shield (22) is an inclined surface, a transverse groove (523) is provided inside the cross bar (52) along its length direction, and the top end of the wedge plate (63) slides in the transverse groove (523).

8. The load-adjustable electrode hot water boiler according to any one of claims 1 to 7, characterized in that: An electrode tube holder (16) is fixedly mounted on the top of the drum (10), a hollow electrode porcelain sleeve (72) is fixedly mounted inside the electrode tube holder (16), a phase electrode (12) is fixedly mounted on the bottom end of the electrode porcelain sleeve (72), a Buddha's hand wire clamp (73) is arranged at the top end of the electrode porcelain sleeve (72), and a conductive copper rod (71) is arranged between the Buddha's hand wire clamp (73) and the phase electrode (12).

9. The load-adjustable electrode hot water boiler according to claim 8, characterized in that: The electrode porcelain sleeve (72) is provided with a raised ring seat (741) located inside the electrode tube seat (16) on the outside, and sealing rings (742) are provided on both the upper and lower sides of the raised ring seat (741), and the surface of the sealing ring (742) close to the raised ring seat (741) is a spherical arc surface, and is away from the surface plane of the raised ring seat (741).

10. The load-adjustable electrode hot water boiler according to claim 8, characterized in that: An upper insulating sheath (17) is provided at the bottom of the electrode tube seat (16), and a lower insulating sheath (18) is provided at the top of the water distributor (13).

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