Electrochemical device for water treatment

Abstract

The electrochemical device for water treatment comprises a cleaning mechanism and a water tank, the cleaning mechanism is mounted below a top plate of the water tank, the water tank is provided with a water inlet, a water outlet, a drain outlet and an overflow port, and a mounting disc is rotatably arranged on the top plate of the water tank. The multiple cathodes are arranged below the mounting disc, the cathodes are sequentially rotated to the cleaning mechanism through the transposition mechanism, scale on the cathodes is cleaned through cooperation of rotation of the cathodes and lifting of the scrapers, compared with lantern rings arranged on the cathodes in a sleeving mode, the contact area of the scrapers and the scale on the cathodes is small, more labor is saved during cleaning, and water is electrolyzed through the scrapers when water is electrolyzed. The cleaning mechanism can rotate to the horizontal direction, the cleaning mechanism is prevented from being soaked in water for a long time, the service life of the cleaning mechanism is prolonged, the cathode is provided with the socket, a worker can separate the cable from the cathode through the socket and the cable plug before the cathode is rotated, and the cable is prevented from being damaged in the rotation process of the cathode.

Description

Technical Field

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

[0002] Electrochemical water treatment is a technology for softening hard water. It is often used in circulating water systems. It electrolyzes circulating water to cause calcium and magnesium ions to form scale on the cathode, thereby preventing scaling of the circulating water pipeline. After a period of use, the cathode will have reduced treatment efficiency due to scale deposition, so the cathode rod surface needs to be descaled.

[0003] In the patent with publication number CN218435457U and publication date February 3, 2023, a device is disclosed for cleaning cathode scale by driving a ring to rise and fall through a spiral mechanism. However, the patent has the following disadvantages: the ring is mounted on the cathode, and the contact area with the scale is large, which increases the scraping amount and thus increases the scraping force, making it more laborious to drive the ring to rise and fall, and more laborious to clean the cathode scale. At the same time, the cathode will also be subjected to a large reaction force, which can easily damage the ring and the cathode. Therefore, it is necessary to design a device that saves more labor when cleaning cathode scale. Summary of the invention

[0004] The object of the present invention is to provide an electrochemical device for water treatment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electrochemical device for water treatment, comprising a cleaning mechanism and a water tank, wherein the cleaning mechanism is installed under the top plate of the water tank, and the water tank is provided with a water inlet, a water outlet, a sewage outlet and an overflow outlet, a mounting plate is rotatably provided on the top plate of the water tank, a plurality of cathodes are rotatably provided under the mounting plate, a plurality of anodes are fixed under the top plate of the water tank, the anodes are electrically connected to an electrolytic power source, a manhole is provided on the top plate of the water tank, the mounting plate is driven by a transfer mechanism, the transfer mechanism is installed on the top plate of the water tank, and the transfer mechanism can transfer any cathode to the cleaning mechanism; The cleaning mechanism includes a cleaning bracket and a scraper, wherein the cleaning bracket is rotatably arranged under the top plate of the water tank, the cleaning bracket can be fixed in a vertical or horizontal direction, a cleaning screw is rotatably arranged on the cleaning bracket, a cleaning slider is threadedly connected to the cleaning screw, the cleaning slider is lifted and lowered on the cleaning bracket, a scraper is slidably arranged on the cleaning slider, and the scraper is also lifted and lowered on the cleaning bracket; A socket is provided on the cathode, and a cable plug is detachably connected in the socket. The cable plug is electrically connected to an electrolytic power source, and the cathode can rotate under the drive of the rotating mechanism.

[0006] Preferably, the cleaning mechanism further includes a feed track fixed to the cleaning bracket. The feed track tapers gradually from its middle to its upper and lower ends, that is, the distance from the middle of the feed track to the cathode at its upper and lower ends gradually increases. One end of the scraper is provided with a blade, and the other end is fixed with a support rod. A roller is rotatably arranged on the support rod, and the roller can roll along the feed track. A retracting spring is sleeved on the support rod, and the retracting spring can press the roller tightly against the feed track.

[0007] Preferably, the cleaning mechanism further includes a locking rod. One end of the locking rod is rotatably arranged on the cleaning bracket, and a locking hole is provided at the other end of the locking rod. The length of the cleaning bracket is L, and the length of the locking rod is l. The distance from the rotation center of the cleaning bracket and the water tank top plate to the rotation center of the cleaning bracket and the locking rod is S. The length of l satisfies the following relationship: S < l < L - S. A vertical locking seat and a horizontal locking seat are fixed under the water tank top plate. Spring pins are respectively installed on the vertical locking seat and the horizontal locking seat. When the locking hole of the locking rod is connected to the vertical locking seat through the spring pin, the cleaning bracket is fixed in the vertical direction. When the locking hole of the locking rod is connected to the horizontal locking seat through the spring pin, the cleaning bracket is fixed in the horizontal direction.

[0008] Preferably, the distance from the overflow port to the water tank top plate is h. When the cleaning bracket is fixed in the horizontal direction, the distance from the water tank top plate to the blade of the scraper is D, and the value of D ranges from 0 to h.

[0009] Preferably, the indexing mechanism includes an external gear ring coaxially fixed on the mounting disc. The external gear ring is meshed with an indexing incomplete gear. When the indexing incomplete gear rotates one week, it can drive the external gear ring to rotate once, and then drive the mounting disc to rotate once, so as to rotate a cathode installed on the mounting disc to the cleaning mechanism. The indexing incomplete gear is rotatably arranged on the output shaft of the telescopic transmission shaft. A lower limit bracket is arranged below the indexing incomplete gear, and an upper limit bracket is arranged above the indexing incomplete gear. Both the lower limit bracket and the upper limit bracket are fixed on the water tank top plate. A driven indexing clutch tooth disc is coaxially fixed below the indexing incomplete gear, and a driving indexing clutch tooth disc is fixed on the output shaft of the telescopic transmission shaft. The driving indexing clutch tooth disc is located below the indexing incomplete gear and above the driven indexing clutch tooth disc. The output shaft of the telescopic transmission shaft is rotatably arranged on the distribution plate. When the distribution plate rises, the driving indexing clutch tooth disc and the driven indexing clutch tooth disc can be engaged. When the distribution plate descends, the driving indexing clutch tooth disc and the driven indexing clutch tooth disc can be separated. The input shaft of the telescopic transmission shaft is driven by the main motor, and the rotating mechanism also includes a spline shaft. The main motor can also drive the spline shaft. An input gear is slidably arranged on the spline shaft, and the spline shaft is circumferentially fixedly connected with the input gear. When the spline shaft rotates, it can drive the input gear to rotate. The input gear is rotatably arranged in the distribution plate, and the input gear is meshingly connected with the output gear ring, and the output gear ring is rotatably arranged in the distribution plate. The output gear ring is coaxially fixed with an active clutch sprocket ring, and a driven clutch sprocket ring is fixed on the cathode. The driven clutch sprocket ring is located below the active clutch sprocket ring. The lowering of the distribution plate can engage the active clutch sprocket ring and the driven clutch sprocket ring, and the rising of the distribution plate can separate the active clutch sprocket ring and the driven clutch sprocket ring.

[0010] Preferably, the incomplete shifting gear is coaxially fixed with an incomplete switching gear, the incomplete switching gear is located below the incomplete shifting gear, the incomplete switching gear is meshingly connected with the switching gear, the switching gear is coaxially installed with a switching lead screw, the switching gear is rotatably arranged on the lower limit bracket, the switching lead screw is threadedly connected with a switching slider, the switching slider is lifted and lowered on the lower limit bracket, after the incomplete shifting gear is disengaged from the outer gear ring of the mounting plate, the incomplete switching gear enters into meshing with the switching gear, the forward rotation of the incomplete switching gear can drive the switching gear to reverse, and then drive the switching lead screw to reverse, thereby driving the switching slider to descend; A driven wedge is fixed on the distribution plate. The driven wedge has two inclined surfaces, which are respectively called an upper inclined surface and a lower inclined surface. The driven wedge is pressed by the active wedge. The active wedge has two inclined surfaces, which are respectively called an upper inclined surface and a lower inclined surface. The active wedge is slidably arranged on a wedge bracket. The wedge bracket is fixed on the top plate of the water tank. A wedge spring is arranged between the active wedge and the wedge bracket. The wedge spring can keep the active wedge in contact with the driven wedge. When the lower inclined surface of the active wedge contacts the upper inclined surface of the driven wedge, the distribution plate is kept at the bottom. When the upper inclined surface of the active wedge contacts the lower inclined surface of the driven wedge, the distribution plate is kept at the top. A switching pin is provided on the distribution plate for lifting and lowering, and a switching spring is provided between the switching pin and the distribution plate, and the switching spring can keep the switching pin in contact with the switching slider.

[0011] Preferably, a motor bracket is fixed on the top plate of the water tank, an input shaft of the telescopic transmission shaft is rotatably provided on the motor bracket, gear A is coaxially fixed to the input shaft of the telescopic transmission shaft, gear A is meshingly connected with gear B, gear B is fixed to the output shaft of the main motor, the main motor is fixed to the motor bracket, a spline shaft is rotatably provided on the motor bracket, gear C is coaxially fixed to the spline shaft, gear C is meshingly connected with gear B; A push-pull electromagnet is fixed under the motor bracket, and the output shaft of the push-pull electromagnet is fixed on the distribution plate. The push-pull electromagnet can drive the distribution plate to rise after being energized. The push-pull electromagnet is electrically connected to the controller. Travel switches are respectively fixed at both ends of the cleaning bracket, and the travel switches are electrically connected to the controller. The cleaning slider can contact the travel switch. The cleaning screw is driven by a cleaning motor, the cleaning motor is fixed on a cleaning bracket, and the cleaning motor is electrically connected to a controller.

[0012] Preferably, a locking pin is fixed on the distribution plate, and a plurality of positioning holes are opened on the mounting plate, the number of the positioning holes is the same as the number of cathodes, and the locking pin can be inserted into one of the positioning holes when the distribution plate is lowered.

[0013] Preferably, a ratchet is coaxially fixed to the incomplete switching gear, the ratchet is located above the incomplete switching gear, the ratchet can contact with a pawl, the pawl is rotatably arranged under the upper limit bracket, one end of a torsion spring is fixed to the pawl, and the other end of the torsion spring is fixed under the upper limit bracket, the torsion spring keeps the pawl pressing the ratchet, the pawl can prevent the ratchet from reversing, and further prevent the incomplete switching gear from reversing, thereby preventing the switching gear from rotating forward; An overrunning clutch is installed in the switching gear. A switching screw is fixed on the output shaft of the overrunning clutch. The switching screw is not self-locking. The rising of the switching slider can drive the switching screw to rotate forward. The forward rotation of the switching screw cannot drive the switching gear to rotate forward through the overrunning clutch. The reversal of the switching gear can drive the switching screw to rotate reversely through the overrunning clutch.

[0014] Preferably, a spray pipe is fixed on the top plate of the water tank, and a spray head is fixed under the spray pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: multiple cathodes are arranged under the mounting plate, and each cathode is rotated to the cleaning mechanism in turn through the transfer mechanism. The scale on the cathode is cleaned by the rotation of the cathode and the lifting and lowering of the scraper. A set of cleaning mechanisms can be used to clean multiple cathodes, thereby improving space utilization. Compared with the sleeve ring mounted on the cathode, the scraper of the present invention has a small contact area with the scale on the cathode, which reduces the scraping amount and thus reduces the scraping force, making it easier to clean the cathode scale. At the same time, the cathode is subjected to a smaller reaction force, and the sleeve ring and the cathode are not easily damaged, making it easier to clean. During the electrolysis of water, the cleaning mechanism can be rotated to a horizontal direction to avoid the cleaning mechanism from being soaked in water for a long time, thereby extending the life of the cleaning mechanism. A socket is provided on the cathode, and before rotating the cathode, the worker can separate the cable from the cathode through the socket and the cable plug to avoid damage to the cable during the rotation of the cathode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric view of the present invention; Figure 2It is an axonometric diagram of the top plate and internal structure of the water tank of the present invention; Figure 3 For the present invention Figure 2 A local enlarged view of point A; Figure 4 It is an axonometric view of the cleaning mechanism of the present invention; Figure 5 A partial cross-sectional view of the cleaning mechanism of the present invention; Figure 6 This is a front view of the top plate and internal structure of the water tank of the present invention, and the cleaning bracket is fixed in the vertical direction; Figure 7 This is a front view of the water tank top plate and internal structure of the present invention, and the cleaning bracket is fixed in the horizontal direction; Figure 8 It is an axonometric diagram of the indexing mechanism, the rotating mechanism and the cleaning mechanism of the present invention; Fig. 9 It is an axonometric view from another angle of the indexing mechanism, the rotating mechanism and the cleaning mechanism of the present invention; Fig.10 It is an axonometric diagram of the main structure of the indexing mechanism of the present invention; Fig.11 Another angle axonometric view of the main structure of the indexing mechanism of the present invention; Fig.12 It is an axonometric diagram of the indexing mechanism and the rotating mechanism of the present invention; Fig.13 A partial cross-sectional view of the rotating mechanism of the present invention; Fig.14 It is an axonometric view from another angle of the indexing mechanism and the rotating mechanism of the present invention; Fig.15 This is another angled isometric view of the indexing mechanism and the rotating mechanism of the present invention, with the main motor removed; Fig.16 For the present invention Fig.15 A partial enlarged view of point B; Fig.17 For the present invention Fig.14 A partial enlarged view of point C.

[0017] In the figure: 101, water tank, 102, sewage outlet, 103, overflow port, 104, mounting plate, 105, cathode, 106, anode, 107, manhole, 108, socket, 109, sprinkler head, 200, cleaning mechanism, 201, cleaning bracket, 202, scraper, 203, cleaning screw, 204, cleaning slider, 205, locking rod, 206, feed track, 207, support rod, 208, roller, 209, knife collection spring, 210, spring pin, 211, vertical locking seat, 212, horizontal locking seat, 300, transfer mechanism, 301, transfer incomplete gear, 302, telescopic transmission shaft, 303, upper limit bracket, 304, lower limit bracket, 305, driven transfer clutch tooth plate, 306, active transfer clutch tooth plate, 307, Distribution plate, 308, motor bracket, 309, main motor, 310, switch incomplete gear, 311, switch gear, 312, switch screw, 313, switch slider, 314, driven wedge, 315, active wedge, 316, wedge spring, 317, switch pin, 318, switch spring, 319, A gear, 320, B gear, 321, C gear, 322, positioning hole, 323, locking pin, 324, wedge bracket, 325, outer gear ring, 400, rotating mechanism, 401, spline shaft, 402, input gear, 403, output gear ring, 404, active clutch sprocket ring, 405, driven clutch sprocket ring, 501, push-pull electromagnet, 502, travel switch, 503, cleaning motor, 504, ratchet, 505, pawl. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides a technical solution: an electrochemical device for water treatment, such as Figure 1 , 2As shown, it includes a cleaning mechanism 200 and a water tank 101, the cleaning mechanism 200 is installed under the top plate of the water tank 101, the water tank 101 is provided with a water inlet, a water outlet, a sewage outlet 102 and an overflow port 103, a mounting plate 104 is rotatably provided on the top plate of the water tank 101, a plurality of cathodes 105 are rotatably provided under the mounting plate 104, a plurality of anodes 106 are fixed under the top plate of the water tank 101, the anodes 106 are electrically connected to the electrolysis power supply, a manhole 107 is provided on the top plate of the water tank 101, the mounting plate 104 is driven by a transfer mechanism 300, the transfer mechanism 300 is installed on the top plate of the water tank 101, and the transfer mechanism 300 can rotate any cathode 105 to the cleaning mechanism 200.

[0020] like Figure 2 , 3 As shown in , 4, the cleaning mechanism 200 includes a cleaning bracket 201 and a scraper 202. The cleaning bracket 201 is rotatably arranged under the top plate of the water tank 101. The cleaning bracket 201 can be fixed in the vertical or horizontal direction. A cleaning screw 203 is rotatably arranged on the cleaning bracket 201. The cleaning screw 203 is threadedly connected with a cleaning slider 204. The cleaning slider 204 is lifted and lowered on the cleaning bracket 201. The scraper 202 is slidably arranged on the cleaning slider 204, and the scraper 202 is also lifted and lowered on the cleaning bracket 201.

[0021] A plurality of cathodes 105 are arranged under the mounting plate 104, and each cathode 105 is rotated to the cleaning mechanism 200 in turn through the transfer mechanism 300. The scale on the cathode 105 is cleaned by the rotation of the cathode 105 and the lifting and lowering of the scraper 202. Compared with the sleeve ring on the cathode 105, the contact area between the scraper 202 and the scale on the cathode 105 in this embodiment is small, and it is more labor-saving when cleaning. When electrolyzing water, the cleaning mechanism 200 can be rotated to a horizontal direction to avoid the cleaning mechanism 200 from being soaked in water for a long time, thereby extending the life of the cleaning mechanism 200.

[0022] like Figure 7 As shown, the cathode 105 is provided with a socket 108, and a cable plug is detachably connected in the socket 108, and the cable plug is electrically connected to the electrolysis power source, and the cathode 105 can rotate under the drive of the rotating mechanism 400. The cathode 105 is provided with a socket 108, and before rotating the cathode 105, the worker can separate the cable from the cathode 105 through the socket 108 and the cable plug to prevent the cable from being damaged during the rotation of the cathode 105.

[0023] like Figure 3 , 4As shown in Figure 5, the cleaning mechanism 200 also includes a feed track 206, which is fixed on the cleaning bracket 201. The feed track 206 gradually narrows from the middle to the upper and lower ends, that is, the distance between the feed track 206 and the cathode 105 gradually increases from the middle to the upper and lower ends. A blade is provided at one end of the scraper 202, and a support rod 207 is fixed at the other end. A roller 208 is rotatably provided on the support rod 207, and the roller 208 can roll along the feed track 206. The support rod 207 is provided with a knife-collecting spring 209, and the knife-collecting spring 209 can press the roller 208 onto the feed track 206.

[0024] The rotation of the cleaning screw 203 can drive the cleaning slider 204 to rise and fall, and then drive the scraper 202 to rise and fall. During the rise and fall of the scraper 202, the roller 208 rolls along the feed track 206, so that the support rod 207 moves with the feed track 206. The knife-collecting spring 209 can press the roller 208 against the feed track 206, thereby driving the scraper 202 to extend and retract. When the scraper 202 is in the middle of the feed track 206, the scraper 202 extends so as to contact the cathode 105. When the scraper 202 is at both ends of the feed track 206, the scraper 202 is retracted and away from the cathode 105. Through the cooperation of the feed track 206 and the knife-collecting spring 209, the scraper 202 can be retracted at both ends of the cleaning bracket 201 to avoid collision with the rotating cathode 105, thereby avoiding damage to the cathode 105 and the scraper 202.

[0025] like Figure 6 , 7As shown in FIGS. 9, the cleaning mechanism 200 further includes a locking rod 205. One end of the locking rod 205 is rotatably arranged on the cleaning bracket 201. A locking hole is formed at the other end of the locking rod 205. The length of the cleaning bracket 201 is L, and the length of the locking rod 205 is l. The distance from the rotation center of the cleaning bracket 201 and the top plate of the water tank 101 to the rotation center of the cleaning bracket 201 and the locking rod 205 is S. The length of l satisfies the following relationship: S < l < L - S. A vertical locking seat 211 and a horizontal locking seat 212 are fixed under the top plate of the water tank 101. Spring pins 210 are respectively installed on the vertical locking seat 211 and the horizontal locking seat 212. A spring pin is a commonly used positioning and connecting part. Through the built-in spring, the pin inside it is kept protruding, and through the external handle, the pin inside it can be retracted. When the pin of the spring pin 210 is inserted into the locking hole of the locking rod 205, the locking rod 205 can be fixed at the spring pin 210 of the vertical locking seat 211 or the horizontal locking seat 212. When the spring pin 210 is pulled up by the handle, the locking rod 205 can be separated from the spring pin 210, and thus can be separated from the vertical locking seat 211 or the horizontal locking seat 212. When the locking hole of the locking rod 205 is connected to the vertical locking seat 211 through the spring pin 210, the cleaning bracket 201 is fixed in the vertical direction. When the locking hole of the locking rod 205 is connected to the horizontal locking seat 212 through the spring pin 210, the cleaning bracket 201 is fixed in the horizontal direction.

[0026] Before descaling the cathode 105, first close the water inlet and outlet, then pull out the cable plug on the socket 108 of the cathode 105, and then empty the water tank 101 through the sewage outlet 102. After the water tank 101 is emptied, the worker enters the water tank 101 from the manhole 107. Subsequently, pull up the handle of the spring pin 210 of the horizontal locking seat 212 to separate the locking rod 205 from the horizontal locking seat 212. Then rotate the cleaning bracket 201 to make the cleaning bracket 201 vertical, and then connect the locking rod 205 to the vertical locking seat 211. Through the cooperation of the locking rod 205, the horizontal locking seat 212, and the vertical locking seat 211, the cleaning bracket 201 can be conveniently fixed in the vertical direction or the horizontal direction.

[0027] As Figure 7 shown, the distance from the overflow port 103 to the top plate of the water tank 101 is h ( Figure 6 the overflow port 103 is shown by a dotted line in

[0028] As Figure 8As shown, the transfer mechanism 300 includes an outer gear ring 325, which is coaxially fixed on the mounting disk 104. The outer gear ring 325 is meshingly connected with a transfer incomplete gear 301. One rotation of the transfer incomplete gear 301 can drive the outer gear ring 325 to rotate once, thereby driving the mounting disk 104 to rotate once, and then rotating a cathode 105 installed on the mounting disk 104 to the cleaning mechanism 200.

[0029] like Figure 8 , 9 As shown in , 10 and 11, the incomplete shifting gear 301 is rotatably arranged on the output shaft of the telescopic transmission shaft 302. The telescopic transmission shaft 302 is a commonly used transmission part, and the length of the transmission shaft can change with the specific working conditions. A lower limit bracket 304 is arranged below the incomplete shifting gear 301, and an upper limit bracket 303 is arranged above the incomplete shifting gear 301. The lower limit bracket 304 and the upper limit bracket 303 are both fixed on the top plate of the water tank 101. A driven shifting clutch tooth plate 305 is coaxially fixed below the incomplete shifting gear 301, and an active shifting clutch tooth plate 306 is fixed on the output shaft of the telescopic transmission shaft 302. The active shifting clutch tooth plate 306 is located below the incomplete shifting gear 301 and above the driven shifting clutch tooth plate 305. The driven shifting clutch tooth plate 305 and the active shifting clutch tooth plate 306 form a pair of tooth clutches. When the speed difference between the two components to be engaged is within the tooth clutch 306, that is, the output shaft of the telescopic transmission shaft 302 is rotatably arranged on the distribution plate 307, and the output shaft of the telescopic transmission shaft 302 is axially fixed to the distribution plate 307. The rise of the distribution plate 307 can drive the output shaft of the telescopic transmission shaft 302 to shrink, and the length of the telescopic transmission shaft 302 is shortened. When the output shaft of the telescopic transmission shaft 302 shrinks, the active transfer clutch tooth plate 306 fixedly connected thereto is driven to rise, and when the active transfer clutch tooth plate 306 rises, it can engage with the driven transfer clutch tooth plate 305 located above it, that is, the rise of the distribution plate 307 can make the active transfer clutch tooth plate 306 and the driven transfer clutch tooth plate 305 engage ( Fig. 9When the active shift clutch tooth plate 306 and the driven shift clutch tooth plate 305 are in a engaged state), the distribution plate 307 descends to drive the output shaft of the telescopic transmission shaft 302 to extend, and the length of the telescopic transmission shaft 302 is extended. When the output shaft of the telescopic transmission shaft 302 is extended, it drives the active shift clutch tooth plate 306 fixedly connected thereto to descend, and when the active shift clutch tooth plate 306 descends, it can be separated from the driven shift clutch tooth plate 305 located above it, that is, the distribution plate 307 descends to separate the active shift clutch tooth plate 306 and the driven shift clutch tooth plate 305.

[0030] The rotation of the telescopic transmission shaft 302 can drive the active indexing clutch sprocket 306 to rotate. When the active indexing clutch sprocket 306 and the driven indexing clutch sprocket 305 are engaged, the rotation of the telescopic transmission shaft 302 can drive the driven indexing clutch sprocket 305 to rotate, and then drive the indexing incomplete gear 301 to rotate, and then drive the outer gear ring 325 to rotate, thereby driving the mounting plate 104 to rotate.

[0031] like Fig.12 , 13 As shown in Figures 14, the input shaft of the telescopic transmission shaft 302 is driven by the main motor 309, and the rotating mechanism 400 also includes a spline shaft 401. The main motor 309 can also drive the spline shaft 401. An input gear 402 is slidably arranged on the spline shaft 401. The spline shaft 401 is fixedly connected to the input gear 402 in a circumferential direction. When the spline shaft 401 rotates, it can drive the input gear 402 to rotate. The input gear 402 is rotatably arranged in the distribution plate 307. The input gear 402 is meshedly connected with an output gear ring 403. The output gear ring 403 is rotatably arranged in the distribution plate 307. An active clutch toothed disc ring 404 is coaxially fixed to the output gear ring 403, and a driven clutch toothed disc ring is fixed on the cathode 105. 405, the driven clutch sprocket ring 405 is located below the active clutch sprocket ring 404, the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 form a pair of tooth clutches, the distribution plate 307 descends to drive the input gear 402 and the output gear ring 403 to descend, the output gear ring 403 descends to drive the active clutch sprocket ring 404 to descend, and then drives the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 to engage, the distribution plate 307 rises to drive the input gear 402 and the output gear ring 403 to rise, the output gear ring 403 rises to drive the active clutch sprocket ring 404 to rise, and then drives the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 to separate ( Fig.12 The active clutch sprocket ring 404 and the driven clutch sprocket ring 405 are in a separated state).

[0032] When the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 are engaged, the rotation of the spline shaft 401 can drive the input gear 402 to rotate, and then drive the output gear ring 403 to rotate, and then drive the active clutch sprocket ring 404 to rotate, and then drive the driven clutch sprocket ring 405 to rotate, thereby driving the cathode 105 to rotate.

[0033] The main motor 309 can drive the telescopic transmission shaft 302 and the spline shaft 401 to rotate. The spline shaft 401 drives the active clutch tooth plate 404 to rotate through the input gear 402 and the output gear ring 403. The distribution plate 307 rises to engage the active indexing clutch tooth plate 306 and the driven indexing clutch tooth plate 305, so that the active clutch tooth plate 404 and the driven clutch tooth plate 405 are separated, so that the telescopic transmission shaft 302 drives the mounting plate 104 to rotate through the active indexing clutch tooth plate 306, the driven indexing clutch tooth plate 305, the indexing incomplete gear 301, and the outer gear ring 325, thereby a cathode 10 5 rotates to the cleaning mechanism 200, and then the distribution plate 307 descends to separate the active indexing clutch tooth plate 306 and the driven indexing clutch tooth plate 305, so that the active clutch tooth plate ring 404 and the driven clutch tooth plate ring 405 are engaged, so that the active clutch tooth plate ring 404 drives the cathode 105 to rotate through the driven clutch tooth plate ring 405. The power of the indexing mechanism 300 and the rotating mechanism 400 can be controlled by the lifting and lowering of the distribution plate 307, so that the installation disk 104 and the cathode 105 can be driven and controlled, and multiple cathodes 105 and the installation disk 104 share a power system, thereby improving the space utilization rate.

[0034] like Fig.13 , 14 As shown, the incomplete shifting gear 301 is coaxially fixed with the switching incomplete gear 310. The switching incomplete gear 310 is located below the incomplete shifting gear 301. The switching incomplete gear 310 is meshed with the switching gear 311. The switching gear 311 is coaxially installed with a switching screw 312. The switching gear 311 is rotatably set on the lower limit bracket 304. The switching screw 312 is threadedly connected with a switching slider 313. The switching slider 313 is lifted and lowered on the lower limit bracket 304. After the incomplete shifting gear 301 is disengaged from the outer gear ring 325 of the mounting plate 104, the switching incomplete gear 310 and the switching gear 311 enter into meshing. The forward rotation of the switching incomplete gear 310 can drive the switching gear 311 to reverse, and then drive the switching screw 312 to reverse, thereby driving the switching slider 313 to descend.

[0035] like Fig.12As shown, a driven wedge 314 is fixed on the distribution plate 307. The driven wedge 314 has two inclined surfaces, respectively called an upper inclined surface and a lower inclined surface. The driven wedge 314 is pressed by the active wedge 315. The active wedge 315 has two inclined surfaces, respectively called an upper inclined surface and a lower inclined surface. The active wedge 315 is slidably arranged on a wedge bracket 324. The wedge bracket 324 is fixed on the top plate of the water tank 101. A wedge spring 316 is arranged between the active wedge 315 and the wedge bracket 324. The wedge spring 316 can keep the active wedge 315 in contact with the driven wedge 314. When the lower inclined surface of the active wedge 315 contacts the upper inclined surface of the driven wedge 314, the distribution plate 307 is kept at the bottom. When the upper inclined surface of the active wedge 315 contacts the lower inclined surface of the driven wedge 314, the distribution plate 307 is kept at the top.

[0036] By cooperating with the wedge spring 316, the active wedge 315 and the driven wedge 314, an upward or downward clamping force can be applied to the distribution plate 307. When the upper inclined surface of the active wedge 315 contacts the lower inclined surface of the driven wedge 314, an upward clamping force is applied to the distribution plate 307. When the clamping force is upward, the distribution plate 307 remains at the upper part. At this time, the active shift clutch sprocket 306 and the driven shift clutch sprocket 305 are in a compressed engagement state. When the lower inclined surface of the active wedge 315 contacts the upper inclined surface of the driven wedge 314, a downward clamping force is applied to the distribution plate 307. When the clamping force is downward, the distribution plate 307 remains at the lower part. At this time, the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 are in a compressed engagement state.

[0037] like Fig.14 As shown, a switching pin 317 is provided on the distribution plate 307 for lifting and lowering, and a switching spring 318 is provided between the switching pin 317 and the distribution plate 307 , and the switching spring 318 can keep the switching pin 317 in contact with the switching slider 313 .

[0038] After the incomplete gear 301 is disengaged from the outer gear ring 325 of the mounting plate 104, the incomplete gear 310 is meshed with the switching gear 311. The incomplete gear 310 is rotated forward through the switching gear 311 and the switching lead screw 312 to drive the switching slider 313 to descend. The descent of the switching slider 313 can drive the switching pin 317 to descend. During the descent of the switching pin 317, the switching spring 318 is compressed, so that the elastic force on the switching spring 318 continues to increase. When the elastic force on the switching spring 318 exceeds the wedge spring 316 and the active spring 317, the switching pin 317 is pressed against the switching spring 318, and the switching pin 317 is pressed against the switching spring 318. After the wedge block 315 clamps the distribution plate 307, the switching slider 313 and the distribution plate 307 drop rapidly, thereby driving the active shift clutch sprocket 306 and the driven shift clutch sprocket 305 to separate, and the active clutch sprocket ring 404 and the driven clutch sprocket ring 405 to engage, so that the power of the shift mechanism 300 is cut off and the power of the rotating mechanism 400 is connected. Whenever the shift mechanism 300 rotates a cathode 105 to the cleaning mechanism 200, the distribution plate 307 can automatically drop, which is convenient for driving and controlling the distribution plate 307.

[0039] like Fig.14 , 15 As shown, a motor bracket 308 is fixed on the top plate of the water tank 101, and the input shaft of the telescopic transmission shaft 302 is rotatably provided on the motor bracket 308. The input shaft of the telescopic transmission shaft 302 is coaxially fixed with an A gear 319, and the A gear 319 is meshingly connected with a B gear 320. The B gear 320 is fixed on the output shaft of the main motor 309, and the main motor 309 is fixed on the motor bracket 308 ( Fig.15 The main motor 309 is removed), a spline shaft 401 is rotatably provided on the motor bracket 308, a C gear 321 is coaxially fixed on the spline shaft 401, and the C gear 321 is meshedly connected with the B gear 320.

[0040] The main motor 309 can drive the B gear 320 to rotate, and then drive the A gear 319 to rotate, thereby driving the telescopic transmission shaft 302 to rotate. The rotation of the B gear 320 can also drive the C gear 321 to rotate, thereby driving the spline shaft 401 to rotate.

[0041] like Figure 5 , 14 As shown, a push-pull electromagnet 501 is fixed under the motor bracket 308. The push-pull electromagnet is a commonly used part. The push-pull action is achieved by energizing the coil to drive the iron core. The output shaft of the push-pull electromagnet 501 is fixed on the distribution plate 307. After the push-pull electromagnet 501 is energized, it can drive the distribution plate 307 to rise. The push-pull electromagnet 501 is electrically connected to the controller. In this embodiment, the controller can use an 8-bit single-chip microcomputer. The two ends of the cleaning bracket 201 are respectively fixed with travel switches 502 (shown in Figure 5), the travel switch 502 is electrically connected to the controller, and the cleaning slider 204 can contact the travel switch 502.

[0042] like Figure 4 As shown, the cleaning screw 203 is driven by a cleaning motor 503, the cleaning motor 503 is fixed on the cleaning bracket 201, and the cleaning motor 503 is electrically connected to the controller.

[0043] After the scale cleaning of a cathode 105 is completed, the cleaning slider 204 moves to the upper end or the lower end and can trigger the travel switch 502, so that the controller controls the push-pull electromagnet 501 to be energized, thereby driving the distribution plate 307 to rise, and then driving the active shift clutch toothed disc 306 and the driven shift clutch toothed disc 305 to engage, and the active clutch toothed disc ring 404 and the driven clutch toothed disc ring 405 to separate, so that the power of the shifting mechanism 300 is connected and the power of the rotating mechanism 400 is cut off. The controller also controls the cleaning motor 503 to stop for a period of time, waiting for the shifting mechanism 300 to rotate the next cathode 105 to the cleaning mechanism 200, and then the controller controls the cleaning motor 503 to reverse, so that the cleaning slider 204 moves in the opposite direction.

[0044] Each time the scale cleaning of a cathode 105 is completed, the distribution plate 307 can automatically rise, so as to facilitate the driving and control of the distribution plate 307 .

[0045] like Fig.15 , 16 As shown, a locking pin 323 is fixed on the distribution plate 307 , and a plurality of positioning holes 322 are provided on the mounting plate 104 . The number of the positioning holes 322 is the same as the number of the cathodes 105 . The locking pin 323 can be inserted into one of the positioning holes 322 when the distribution plate 307 is lowered.

[0046] After the transfer mechanism 300 rotates a cathode 105 to the cleaning mechanism 200 and the distribution plate 307 descends, the power of the transfer mechanism 300 is cut off, the power of the rotating mechanism 400 is connected, and the locking pin 323 is inserted into a positioning hole 322, thereby preventing the mounting disk 104 from rotating, preventing the mounting disk 104 from rotating when cleaning the scale on the cathode 105, thereby improving stability.

[0047] like Fig.13 , 14As shown in Figures 17, a ratchet 504 is coaxially fixed to the switching incomplete gear 310. The ratchet 504 is located above the shifting incomplete gear 301. The ratchet 504 can contact with a pawl 505. The pawl 505 is rotatably arranged above and below the upper limit bracket 303. One end of a torsion spring is fixed to the pawl 505, and the other end of the torsion spring is fixed under the upper limit bracket 303. The torsion spring keeps the pawl 505 pressing the ratchet 504. The pawl 505 can prevent the ratchet 504 from reversing, thereby preventing the switching incomplete gear 310 from reversing, thereby preventing the switching gear 311 from rotating forward.

[0048] An overrunning clutch is installed in the switching gear 311. The overrunning clutch is a commonly used part that can automatically connect or cut off power according to the direction of rotation. The output shaft of the overrunning clutch is fixed with a switching screw 312. The switching screw 312 does not have self-locking properties. In this embodiment, a screw with a lead angle greater than the friction angle is used to avoid self-locking. The rising of the switching slider 313 can drive the switching screw 312 to rotate forward. The forward rotation of the switching screw 312 cannot drive the switching gear 311 to rotate forward through the overrunning clutch. The reverse rotation of the switching gear 311 can drive the switching screw 312 to rotate reversely through the overrunning clutch.

[0049] The rise of the distribution plate 307 can drive the switching slider 313 to rise through the switching pin 317 and the switching spring 318, and then drive the switching screw 312 to rotate forward, so that the switching slider 313 and the switching screw 312 are reset. The forward rotation of the switching screw 312 cannot drive the switching gear 311 to rotate forward through the overrunning clutch, and the pawl 505 can prevent the ratchet 504 from reversing, thereby preventing the switching incomplete gear 310 from reversing, thereby preventing the switching incomplete gear 310 from driving the outer gear ring 325 of the mounting plate 104 to rotate by reversing.

[0050] like Figure 3 As shown, a spray pipe is fixed on the top plate of the water tank 101, and a spray head 109 is fixed under the spray pipe. The spray head 109 can flush the cathode 105 to improve the cleaning effect.

[0051] Working process: before descaling the cathode 105, first close the water inlet and outlet, then unplug the cable plug on the socket 108 of the cathode 105, and then use the sewage outlet 102 to empty the water tank 101. After the water tank 101 is emptied, the worker enters the water tank 101 from the manhole 107, then pulls up the spring pin 210 of the horizontal locking seat 212 to separate the locking rod 205 from the horizontal locking seat 212, then rotates the cleaning bracket 201 to make the cleaning bracket 201 vertical, and then connects the locking rod 205 to the vertical locking seat 211; The main motor 309 can drive the telescopic transmission shaft 302 and the spline shaft 401 to rotate, and the spline shaft 401 drives the active clutch tooth plate 404 to rotate through the input gear 402 and the output gear ring 403, and the distribution plate 307 rises to engage the active indexing clutch tooth plate 306 and the driven indexing clutch tooth plate 305, so that the active clutch tooth plate 404 and the driven clutch tooth plate 405 are separated, so that the telescopic transmission shaft 302 drives the mounting plate 104 to rotate through the active indexing clutch tooth plate 306, the driven indexing clutch tooth plate 305, the indexing incomplete gear 301, and the outer gear ring 325, and during the engagement of the outer gear ring 325 with the indexing incomplete gear 301, a cathode 105 is rotated to the cleaning mechanism 200; After the incomplete shifting gear 301 is disengaged from the outer gear ring 325 of the mounting plate 104, the incomplete switching gear 310 is meshed with the switching gear 311. The incomplete switching gear 310 rotates forward through the switching gear 311 and the switching lead screw 312 to drive the switching slider 313 to descend. The descent of the switching slider 313 can drive the switching pin 317 to compress the switching spring 318, so that the elastic force on the switching spring 318 continues to increase. When the elastic force on the switching spring 318 exceeds the clamping force of the wedge spring 316 on the distribution plate 307, the switching slider 313 and the distribution plate 307 are rapidly dropped, thereby driving the active shifting clutch tooth plate 306 and the driven shifting clutch tooth plate 305 to separate, and the active clutch tooth plate ring 404 and the driven clutch tooth plate ring 405 to engage, so that the power of the shifting mechanism 300 is cut off and the power of the rotating mechanism 400 is connected, so that the active clutch tooth plate ring 404 drives the cathode 105 to rotate through the driven clutch tooth plate ring 405.

[0052] Then, the cleaning motor 503 drives the cleaning lead screw 203 to rotate, thereby driving the cleaning slider 204 to rise and fall, thereby driving the scraper 202 to rise and fall. During the lifting and falling of the scraper 202, the roller 208 rolls along the feed track 206, so that the support rod 207 moves along the feed track 206, thereby driving the scraper 202 to extend and retract. When the scraper 202 is in the middle of the feed track 206, the scraper 202 extends out to contact the cathode 105. Through the rotation of the cathode 105 and the lifting and falling of the scraper 202, the scale on the cathode 105 is cleaned. After the scale cleaning of a cathode 105 is completed, the cleaning slider 204 moves to the upper end or the lower end and can trigger the travel switch 502, so that the controller controls the push-pull electromagnet 501 to be energized, thereby driving the distribution plate 307 to rise, so that the power of the indexing mechanism 300 is connected and the power of the rotating mechanism 400 is cut off, and the controller controls the cleaning motor 503 to stop for a period of time, waiting for the indexing mechanism 300 to rotate the next cathode 105 to the cleaning mechanism 200, and then the controller controls the cleaning motor 503 to reverse, so that the cleaning slider 204 moves in the opposite direction, thereby driving the scraper 202 to move in the opposite direction to clean the next cathode 105 rotated to the cleaning mechanism 200; The rise of the distribution plate 307 can drive the switching slider 313 to rise, and then drive the switching screw 312 to rotate forward, so that the switching slider 313 and the switching screw 312 are reset. The forward rotation of the switching screw 312 cannot drive the switching gear 311 to rotate forward through the overrunning clutch, and the pawl 505 can prevent the ratchet 504 from reversing, thereby preventing the switching incomplete gear 310 from reversing, thereby preventing the switching incomplete gear 310 from driving the outer gear ring 325 of the mounting plate 104 to rotate by reversing.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrochemical device for water treatment, characterized in that: The invention comprises a cleaning mechanism (200) and a water tank (101), wherein the cleaning mechanism (200) is installed under the top plate of the water tank (101), and the water tank (101) is provided with a water inlet, a water outlet, a sewage outlet (102) and an overflow outlet (103). A mounting plate (104) is rotatably provided on the top plate of the water tank (101), and a plurality of cathodes (105) are rotatably provided under the mounting plate (104). A plurality of anodes (106) are fixed under the top plate of the water tank (101), and the anodes (106) are electrically connected to an electrolytic power source. A manhole (107) is provided on the top plate of the water tank (101), and the mounting plate (104) is driven by a transfer mechanism (300). The transfer mechanism (300) is installed on the top plate of the water tank (101), and the transfer mechanism (300) can transfer any cathode (105) to the cleaning mechanism (200); The cleaning mechanism (200) comprises a cleaning bracket (201) and a scraper (202); the cleaning bracket (201) is rotatably arranged under the top plate of the water tank (101); the cleaning bracket (201) can be fixed in a vertical or horizontal direction; a cleaning screw (203) is rotatably arranged on the cleaning bracket (201); a cleaning slider (204) is threadedly connected to the cleaning screw (203); the cleaning slider (204) is movably arranged on the cleaning bracket (201); a scraper (202) is slidably arranged on the cleaning slider (204); and the scraper (202) is also movably arranged on the cleaning bracket (201); The cathode (105) is provided with a socket (108), a cable plug is detachably connected to the socket (108), and the cable plug is electrically connected to an electrolytic power source. The cathode (105) is capable of rotating under the drive of the rotating mechanism (400).

2. An electrochemical device for water treatment according to claim 1, characterized in that: The cleaning mechanism (200) further comprises a feed track (206), wherein the feed track (206) is fixed on the cleaning bracket (201), and the feed track (206) gradually narrows from the middle to the upper and lower ends, that is, the distance between the feed track (206) and the cathode (105) gradually increases from the middle to the upper and lower ends. A blade is provided at one end of the scraper (202), and a support rod (207) is fixed at the other end. A roller (208) is rotatably arranged on the support rod (207), and the roller (208) can roll along the feed track (206). The support rod (207) is sleeved with a knife retracting spring (209), and the knife retracting spring (209) can press the roller (208) onto the feed track (206).

3. An electrochemical device for water treatment according to claim 1, characterized in that: The cleaning mechanism (200) further includes a locking lever (205). One end of the locking lever (205) is rotatably arranged on the cleaning bracket (201). A locking hole is provided at the other end of the locking lever (205). The length of the cleaning bracket (201) is L, and the length of the locking lever (205) is l. The distance from the rotation center of the cleaning bracket (201) and the top plate of the water tank (101) to the rotation center of the cleaning bracket (201) and the locking lever (205) is S. The length of l satisfies the following relationship: S < l < L - S. A vertical locking seat (211) and a horizontal locking seat (212) are fixed under the top plate of the water tank (101). Spring pins (210) are respectively installed on the vertical locking seat (211) and the horizontal locking seat (212). When the locking hole of the locking lever (205) is connected to the vertical locking seat (211) through the spring pin (210), the cleaning bracket (201) is fixed in the vertical direction. When the locking hole of the locking lever (205) is connected to the horizontal locking seat (212) through the spring pin (210), the cleaning bracket (201) is fixed in the horizontal direction.

4. An electrochemical device for water treatment according to claim 1, characterized in that: The distance from the overflow port (103) to the top plate of the water tank (101) is h. When the cleaning bracket (201) is fixed in the horizontal direction, the distance from the top plate of the water tank (101) to the cutting edge of the scraper (202) is D, and the value of D ranges from 0 to h.

5. The electrochemical device for water treatment according to claim 1, characterized in that: The indexing mechanism (300) includes an external gear ring (325). The external gear ring (325) is coaxially fixed on the mounting plate (104). The external gear ring (325) is meshed with an indexing incomplete gear (301). When the indexing incomplete gear (301) rotates one week, it can drive the external gear ring (325) to rotate once, and then drive the mounting plate (104) to rotate once, so as to rotate a cathode (105) installed on the mounting plate (104) to the cleaning mechanism (200). The indexing incomplete gear (301) is rotatably arranged on the output shaft of the telescopic transmission shaft (302). A lower limit bracket (304) is arranged below the indexing incomplete gear (301), and an upper limit bracket (303) is arranged above the indexing incomplete gear (301). Both the lower limit bracket (304) and the upper limit bracket (303) are fixed on the top plate of the water tank (101). A driven indexing clutch tooth disc (305) is coaxially fixed below the indexing incomplete gear (301). A driving indexing clutch tooth disc (306) is fixed on the output shaft of the telescopic transmission shaft (302). The driving indexing clutch tooth disc (306) is located below the indexing incomplete gear (301) and above the driven indexing clutch tooth disc (305). The output shaft of the telescopic transmission shaft (302) is rotatably arranged on the distribution plate (307). When the distribution plate (307) rises, the driving indexing clutch tooth disc (306) and the driven indexing clutch tooth disc (305) can be engaged. When the distribution plate (307) descends, the driving indexing clutch tooth disc (306) and the driven indexing clutch tooth disc (305) can be separated. The input shaft of the telescopic transmission shaft (302) is driven by a main motor (309). The rotating mechanism (400) further comprises a spline shaft (401). The main motor (309) can also drive the spline shaft (401). An input gear (402) is slidably arranged on the spline shaft (401). The spline shaft (401) and the input gear (402) are circumferentially fixedly connected. When the spline shaft (401) rotates, the input gear (402) can be driven to rotate. The input gear (402) is rotatably arranged in the distribution plate (307). The input gear (402) is meshingly connected with the output gear ring (407). 03, the output gear ring (403) is rotatably arranged in the distribution plate (307), the output gear ring (403) is coaxially fixed with an active clutch toothed disc ring (404), the cathode (105) is fixed with a driven clutch toothed disc ring (405), the driven clutch toothed disc ring (405) is located below the active clutch toothed disc ring (404), the distribution plate (307) descends to enable the active clutch toothed disc ring (404) and the driven clutch toothed disc ring (405) to engage, and the distribution plate (307) rises to enable the active clutch toothed disc ring (404) and the driven clutch toothed disc ring (405) to separate.

6. An electrochemical device for water treatment according to claim 5, characterized in that: The incomplete gear (301) is coaxially fixed with an incomplete gear (310) for switching. The incomplete gear (310) for switching is located below the incomplete gear (301). The incomplete gear (310) for switching is meshed with a switching gear (311). The switching gear (311) is coaxially mounted with a switching lead screw (312). The switching gear (311) is rotatably arranged on a lower limit bracket (304). The switching lead screw (312) is threadedly connected with a switching slider (313). The switching slider (313) is lifted and lowered on the lower limit bracket (304). After the incomplete gear (301) for switching is disengaged from the outer gear ring (325) of the mounting plate (104), the incomplete gear (310) for switching is meshed with the switching gear (311). The forward rotation of the incomplete gear (310) can drive the switching gear (311) to rotate in the reverse direction, thereby driving the switching lead screw (312) to rotate in the reverse direction, thereby driving the switching slider (313) to descend. A driven wedge (314) is fixed on the distribution plate (307). The driven wedge (314) has two inclined surfaces, respectively referred to as an upper inclined surface and a lower inclined surface. The driven wedge (314) is pressed by an active wedge (315). The active wedge (315) has two inclined surfaces, respectively referred to as an upper inclined surface and a lower inclined surface. The active wedge (315) is slidably arranged on a wedge bracket (324). The wedge bracket (324) is fixed on the top plate of the water tank (101). A wedge spring (316) is provided between the active wedge (315) and the wedge bracket (324), and the wedge spring (316) can keep the active wedge (315) in contact with the driven wedge (314), so that when the lower inclined surface of the active wedge (315) contacts the upper inclined surface of the driven wedge (314), the distribution plate (307) is kept at the bottom, and when the upper inclined surface of the active wedge (315) contacts the lower inclined surface of the driven wedge (314), the distribution plate (307) is kept at the top; A switching pin (317) is provided on the distribution plate (307) to be lifted and lowered, and a switching spring (318) is provided between the switching pin (317) and the distribution plate (307), and the switching spring (318) can keep the switching pin (317) in contact with the switching slider (313).

7. An electrochemical device for water treatment according to claim 5, characterized in that: A motor bracket (308) is fixed on the top plate of the water tank (101), an input shaft of the telescopic transmission shaft (302) is rotatably provided on the motor bracket (308), an A gear (319) is coaxially fixed to the input shaft of the telescopic transmission shaft (302), the A gear (319) is meshingly connected to the B gear (320), the B gear (320) is fixed to the output shaft of the main motor (309), the main motor (309) is fixed to the motor bracket (308), a spline shaft (401) is rotatably provided on the motor bracket (308), a C gear (321) is coaxially fixed to the spline shaft (401), and the C gear (321) is meshingly connected to the B gear (320); A push-pull electromagnet (501) is fixed under the motor bracket (308), the output shaft of the push-pull electromagnet (501) is fixed on the distribution plate (307), the push-pull electromagnet (501) can drive the distribution plate (307) to rise after being energized, the push-pull electromagnet (501) is electrically connected to the controller, and travel switches (502) are respectively fixed at both ends of the cleaning bracket (201), the travel switches (502) are electrically connected to the controller, and the cleaning slider (204) can contact the travel switch (502); The cleaning screw (203) is driven by a cleaning motor (503), the cleaning motor (503) is fixed on the cleaning bracket (201), and the cleaning motor (503) is electrically connected to the controller.

8. An electrochemical device for water treatment according to claim 5, characterized in that: A locking pin (323) is fixed on the distribution plate (307), and a plurality of positioning holes (322) are provided on the mounting plate (104). The number of the positioning holes (322) is the same as the number of the cathodes (105). When the distribution plate (307) is lowered, the locking pin (323) can be inserted into one of the positioning holes (322).

9. An electrochemical device for water treatment according to claim 6, characterized in that: A ratchet (504) is coaxially fixed to the incomplete switching gear (310). The ratchet (504) is located above the incomplete switching gear (310). The ratchet (504) can contact a pawl (505). The pawl (505) is rotatably arranged under the upper limit bracket (303). One end of a torsion spring is fixed to the pawl (505), and the other end of the torsion spring is fixed under the upper limit bracket (303). The torsion spring holds the pawl (505) against the ratchet (504). The pawl (505) can prevent the ratchet (504) from rotating inversely, thereby preventing the incomplete switching gear (310) from rotating inversely, thereby preventing the switching gear (311) from rotating forwardly. An overrunning clutch is installed in the switching gear (311), and a switching lead screw (312) is fixed to the output shaft of the overrunning clutch. The switching lead screw (312) does not have a self-locking property. The rising of the switching slider (313) can drive the switching lead screw (312) to rotate forward. The forward rotation of the switching lead screw (312) cannot drive the switching gear (311) to rotate forward through the overrunning clutch. The reverse rotation of the switching gear (311) can drive the switching lead screw (312) to rotate reversely through the overrunning clutch.

10. An electrochemical device for water treatment according to claim 1, characterized in that: A spray pipe is fixed on the top plate of the water tank (101), and a spray head (109) is fixed below the spray pipe.

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