Automatic dewatering device and method for electrochemical descaling of circulating water

Abstract

The application discloses an automatic dehydration device and method for electrochemical descaling of circulating water, and relates to the technical field of electrochemical water treatment. The dehydration device comprises a sludge adjusting and storing pool, which is used for pre-dehydration treatment of slurry generated by descaling of an electrochemical device. The sludge adjusting and storing pool comprises a pool body, a stirring driving element and a stirring element. The stirring element is arranged in the pool body and comprises a main shaft, a scraper, an extrusion column and an extrusion reciprocating assembly. The output end of the stirring driving element is in transmission connection with the main shaft. The lower end of the main shaft is provided with the scraper, which is arched towards the rear of the rotating direction of the scraper. The extrusion column is located at the rear side of the scraper. The extrusion reciprocating assembly is used for driving the extrusion column to move reciprocally. The dehydration equipment and a sludge pump are arranged. The sludge pump is used for conveying sludge at the bottom of the sludge adjusting and storing pool to the dehydration equipment. The dehydration equipment is used for secondary dehydration treatment of the sludge. The application realizes staged dehydration of the slurry. In the pre-dehydration treatment, the cooperation of the scraper and the extrusion column can effectively prevent the sludge from being hardened.

Description

Technical Field

[0001] This invention belongs to the field of electrochemical water treatment technology, specifically relating to an automatic dewatering device and method for electrochemical descaling of circulating water. Background Technology

[0002] Industrial circulating cooling water is widely used in power, chemical, metallurgical, and central air conditioning industries. During system operation, the water continuously evaporates and concentrates, leading to a sustained increase in the concentration of calcium and magnesium scale-forming ions. This easily results in the precipitation of hard scale such as calcium carbonate and magnesium carbonate on the inner walls of pipes, heat exchangers, and cooling towers, causing decreased heat exchange efficiency, pipe blockage, and a surge in energy consumption. It can also cause equipment corrosion and the growth of bacteria and algae, severely shortening the service life of the circulating water system and its supporting equipment. Currently, electrochemical descaling of circulating water is a mainstream green water treatment technology that bypasses and actively removes calcium and magnesium hardness, requiring little or no chemicals. Its core principle is to convert scale-forming ions into solids and remove them from the water through cathodic scale precipitation and anodic sterilization, thereby inhibiting scale formation at the source and increasing the concentration ratio to achieve emission reduction and energy saving.

[0003] Because electrochemical sludge is mainly composed of calcium carbonate, its high density makes direct, continuous dewatering difficult. Traditional methods involve periodically and manually removing the sludge from a sedimentation tank, requiring shutdown of the electrochemical equipment and impacting continuous treatment efficiency. Furthermore, the high moisture content of the removed sludge necessitates lime drying, increasing the total sludge volume and creating unsanitary conditions. Alternatively, using sludge pumps and screw presses for electrochemical sludge dewatering requires chemical additives and is prone to idling, hindering effective dewatering. Additionally, the sludge tends to settle and clump in the sedimentation tank, clogging pumps and preventing direct dewatering. Therefore, a device and method are needed for continuous, efficient sludge dewatering without disrupting the continuous operation of the electrochemical equipment and minimizing manual intervention. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic dewatering device and method for electrochemical descaling of circulating water that is simple in structure and reasonably designed in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: In a first aspect, the present invention provides an automatic dewatering device for electrochemical descaling of circulating water, comprising: A sludge conditioning tank is used to pre-dehydrate the slurry generated by the discharge of scale from an electrochemical device. The sludge conditioning tank includes a tank body, a stirring drive, and a stirring component. The stirring component is disposed in the tank body and includes a main shaft, a scraper, an extrusion column, and an extrusion reciprocating assembly. The output end of the stirring drive is driven and connected to the main shaft. A scraper is disposed on the lower side of the main shaft. The scraper arches backward in its rotation direction. The extrusion column is located on the rear side in the rotation direction of the scraper, and the extrusion column rubs against the rear side of the scraper. The output end of the extrusion reciprocating assembly is driven and connected to the extrusion column, which is used to drive the extrusion column to reciprocate along the rotation radial direction of the main shaft. The equipment includes a dewatering device and a sludge pump. The input end of the sludge pump is connected to the bottom of the sludge storage tank. The sludge pump is used to transport the sludge from the bottom of the sludge storage tank to the dewatering device, which is used to perform secondary dewatering treatment on the sludge.

[0006] As a further optimization of the present invention, the sludge storage tank receives the slurry generated by the electrochemical device through the sludge discharge pipe. The sludge storage tank is connected to the water outlet pipe, which is used to discharge the supernatant. The output end of the sludge pump is connected to the sludge inlet pipe. The sludge pump transports the sludge to the dewatering equipment through the sludge inlet pipe. The dewatering equipment transfers the dewatered sludge into the sludge silo through the dry sludge pipe.

[0007] As a further optimization of the present invention, the dewatering equipment also returns the filter liquid generated from the dewatering of sludge to the sludge storage tank or the wastewater system of the plant area through the filter liquid pipe.

[0008] As a further optimization of the present invention, the extrusion reciprocating assembly includes a telescopic component, a slide rail, and a slider. The inner end of the slide rail is fixedly connected to the main shaft via a locking block. An installation block is fixedly connected to the lower end of the slide rail. The scraper is fixedly connected to the slide rail via the installation block, and a slider is slidably mounted on the slide rail. The extrusion column is rotatably mounted on the lower end of the slider, and a retaining ring is fixedly provided on the upper end of the slider. A protective sleeve is also fixedly provided on the main shaft. The main body of the telescopic component is rotatably mounted on the protective sleeve. The telescopic end of the telescopic component is rotatably connected to the retaining ring, and a protective sleeve is sleeved at the mounting point of the telescopic component and the protective sleeve.

[0009] As a further optimization of the present invention, an inlet baffle is fixedly installed on the inner side of the pool body, and an inlet groove is opened on the side of the inlet baffle facing the pool body. The inlet groove is connected to the sludge discharge pipe, and a feed hole is opened at the bottom of the inlet groove. A weir plate is installed on the inner side of the inlet baffle, and an outlet groove is opened on the side of the weir plate facing the inlet baffle. The outlet groove is connected to the outlet pipe, and the upper end of the weir plate is higher than the lower end of the feed hole.

[0010] As a further optimization of the present invention, the lower end of the water inlet baffle is lower than the lower end of the feed hole.

[0011] As a further optimization of the present invention, the upper edge of the weir plate is provided with protruding spikes.

[0012] As a further optimization of the present invention, it also includes a defoaming component, which includes a defoaming drive, a cantilever, and a spiked plate. The output end of the defoaming drive is connected to a sleeve, which is rotatably sleeved on the main shaft. A retainer is fixedly connected to the side of the sleeve, and a cantilever is fixedly connected to the retainer. The cantilever extends radially along the rotation of the sleeve, and a spiked plate is rotatably provided at the lower end of the cantilever.

[0013] As a further optimization of the present invention, an overlapping plate is fixedly provided at the lower end of the weir plate, and the end of the cantilever away from the sleeve overlaps on the overlapping plate.

[0014] Secondly, the present invention provides an automatic dewatering method for electrochemical descaling of circulating water, applied to an automatic dewatering device for electrochemical descaling of circulating water, the method comprising the following steps: The slurry generated by the scale discharge from the electrochemical device is transported to the scale storage tank for pre-dewatering treatment; The slurry at the bottom of the tank is stirred by a scraper, and the extrusion column is driven to move back and forth against the arched side of the scraper by the extrusion reciprocating assembly. This causes the bending angle of the scraper to change periodically with the movement of the extrusion column, thus preventing the mud at the bottom of the tank from hardening. The pre-dewatered sludge is pumped to a dewatering device for secondary dewatering.

[0015] The present invention has at least the following beneficial effects: The present invention achieves graded dewatering of slurry by automatically pre-dewatering the slurry discharged from the electrochemical device through a sludge storage tank and secondary dewatering by a dewatering device. In the pre-dewatering process, by setting scrapers and extrusion columns in the sludge storage tank, the scrapers agitate the sludge at the bottom of the tank, preventing sludge from caking and ensuring smooth sludge pumping. In addition, the reciprocating extrusion of the extrusion column on the arched side of the scraper causes the scraper to change from the initial "C" shape to a "3" shape. This causes the scraper to push the sludge forward while also arching and pushing the sludge at the part of the scraper that is protruding forward to the left, preventing the sludge from sticking due to the extrusion in front of the scraper. Furthermore, the lower end of the inlet baffle is positioned below the lower end of the feed hole. This forces the slurry to flow towards the bottom of the tank after it enters through the feed hole, allowing the high-density calcium carbonate sludge to settle fully to the bottom. This prevents unseparated slurry from being discharged with the supernatant, thus improving the clarity of the supernatant. In addition, the upper edge of the weir plate is provided with protrusions, so that when the overflowing supernatant passes over the weir plate, the air bubbles generated on the liquid surface are punctured by the protrusions, preventing the air bubbles from entering the outlet tank and avoiding foam accumulation that hinders the overflow of the supernatant. Attached Figure Description

[0016] Figure 1 This is a simplified overall structural diagram of the present invention; Figure 2 This is the invention Figure 1 A simplified structural diagram of a sludge storage tank viewed from above; Figure 3 This is the invention Figure 1 A simplified structural diagram of a sludge storage tank viewed from the front; Figure 4 This is a schematic diagram of the overall structure of the sludge storage tank of the present invention; Figure 5 This is the invention Figure 4 A schematic diagram of the front sectional view of the structure; Figure 6 This is a partial structural schematic diagram of the stirring component of the present invention; Figure 7 This is a partial top view of the stirring element when the extrusion column of the present invention is in the initial position; Figure 8 This is a partial top view of the stirring element when the extrusion column of the present invention is in the extrusion position; Figure 9 This is a partial structural schematic diagram of the defoaming component of the present invention.

[0017] In the diagram: 1. Electrochemical device; 2. Sludge storage tank; 3. Sludge pump; 4. Dewatering equipment; 5. Sludge silo; 11. Sludge discharge pipe; 201. Water outlet pipe; 31. Sludge inlet pipe; 41. Dry sludge pipe; 51. Filtration pipe; 202. Tank body; 203. Discharge pipe; 21. Water inlet trough; 211. Feed inlet; 22. Water outlet trough; 23. Water inlet baffle; 24. Weir plate; 25. Agitator drive. Components; 26. Mixing component; 261. Main shaft; 262. Scraper; 263. Extrusion column; 264. Slider; 265. Buckle; 266. Telescopic component; 267. Slide rail; 268. Reinforcing beam; 269. Mounting block; 270. Locking block; 27. Walkway plate; 7. Defoaming drive component; 71. Cantilever; 72. Spike plate; 73. Overlap plate; 74. Casing; 75. Sleeve; 76. Card seat. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "left", "right", "horizontal", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this application and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] like Figure 1 As shown, the present invention provides an automatic dewatering device for electrochemical descaling of circulating water, comprising: Sludge conditioning tank 2 is used for pre-dewatering the slurry generated from the scale discharge of electrochemical device 1. (See also...) Figure 4 and Figure 5 The sludge storage tank 2 includes a tank body 202, a stirring drive 25, and a stirring component 26. The stirring component 26 is disposed in the tank body 202 and includes a main shaft 261, a scraper 262, an extrusion column 263, and an extrusion reciprocating assembly. The output end of the stirring drive 25 is driven to the main shaft 261. The scraper 262 is disposed on the lower side of the main shaft 261. The scraper 262 arches backward in its rotation direction. The extrusion column 263 is located on the rear side in the rotation direction of the scraper 262, and the extrusion column 263 rubs against the rear side of the scraper 262. The output end of the extrusion reciprocating assembly is driven to the extrusion column 263 and is used to drive the extrusion column 263 to reciprocate along the rotation radial direction of the main shaft 261. The dewatering equipment 4 and the sludge pump 3 are provided. The input end of the sludge pump 3 is connected to the bottom of the sludge storage tank 2. The sludge pump 3 is used to transport the sludge at the bottom of the sludge storage tank 2 to the dewatering equipment 4. The dewatering equipment 4 is used to perform secondary dewatering treatment on the sludge.

[0021] Through the above method, the slurry discharged from the electrochemical device 1 undergoes multiple dewatering treatments. During the pre-dewatering process, the slurry is agitated by scraper 262, effectively preventing the settled sludge from hardening at the bottom of the tank 202, thus ensuring the sludge remains fluid. In other embodiments, such as... Figure 3 As shown, the stirring element 26 is a stirring grid to agitate the sludge at the bottom of the tank 202; During the agitation process of the scraper 262, the extrusion column 263 reciprocates radially along the rotation of the main shaft 261, causing the bending state of the scraper 262 to change dynamically, such as... Figure 7 The image shows the state of the scraper 262 when it is not being squeezed by the extrusion column 263, i.e., when the extrusion column 263 is in its initial position. (Continue reading...) Figure 8The extrusion column 263 moves the extrusion scraper 262, causing the scraper 262 at the extrusion point to bulge forward in the direction of rotation, thereby changing the scraper 262 from the initial "C" shape to a "3" shape. This causes the scraper 262 to push the dirt forward while also arching and pushing the dirt at the scraper 262 that is bulging forward to the left, so as to prevent the dirt from accumulating and adhering in front of the scraper 262 due to extrusion. Moreover, with Figure 8 Taking the example, assuming the squeezing column 263 moves downwards, the "3"-shaped scraper 262 splits into two small "C" shapes to push the sludge forward. When the amount of sludge in one small "C" shape exerts a greater force on the scraper 262 at that location than the amount of sludge in the other small "C" shape, the scraper 262 on the side with the greater force will drag the scraper 262 on the side with the less force. Therefore, the different distribution of sludge at the bottom of the pool 202 will cause the scraper 262 to be squeezed by the squeezing column 263 while being dragged on both sides, further promoting the dynamic bending change of the scraper 262.

[0022] It should be noted that scraper 262 is made of spring steel plate, which has strong bending and restoring ability. Considering the above-mentioned applicable scenarios, galvanizing or epoxy spraying treatment is required on the surface of spring steel plate to achieve corrosion protection.

[0023] It should be noted that further reading is required. Figure 5 The bottom of the tank body 202 is a sloping conical surface, and the scraper 262 abuts against the bottom surface of the tank body 202. It should be further noted that the stirring rate of the scraper 262 needs to be selected according to the amount of slurry in the tank body 202 to ensure that the sludge at the bottom of the tank body 202 does not float to the surface.

[0024] For example, see below. Figure 5 and Figure 6 The extrusion reciprocating assembly includes a telescopic component 266, a slide rail 267, and a slider 264. The inner end of the slide rail 267 is fixedly connected to the main shaft 261 via a locking block 270. An mounting block 269 is fixedly connected to the lower end of the slide rail 267. The scraper 262 is fixedly connected to the slide rail 267 via the mounting block 269, and the slider 264 is slidably mounted on the slide rail 267. The extrusion column 263 is rotatably mounted on the lower end of the slider 264. A retaining ring 265 is fixedly provided on the upper end of the slider 264. A protective sleeve 74 is also fixedly provided on the main shaft 261. The main body of the telescopic component 266 is rotatably mounted on the protective sleeve 74. The telescopic end of the telescopic component 266 is rotatably connected to the retaining ring 265, and a protective sleeve is fitted at the mounting point of the telescopic component 266 and the protective sleeve 74.

[0025] like Figure 6As shown, the extrusion column 263 is located at the rightmost end. At this time, if the telescopic member 266 is driven to retract, the slider 264 is driven to move to the left along the slide rail 267, thereby realizing that the slider 264 drives the extrusion column 263 to move to the left. During the leftward movement, the extrusion column 263 rotates to extrude the scraper 262 forward in the direction of rotation. After the extrusion column 263 moves to the leftmost end, under the extension drive of the telescopic member 266, the slider 264 moves to the right along the slide rail 267 to realize that the extrusion column 263 moves to the right. Repeat the above actions to realize the reciprocating movement of the extrusion column 263.

[0026] It should be noted that the protective sleeve is an accordion-style protective sleeve, which ensures that the protective sleeve always seals and protects the driving end of the telescopic component 266 when it rotates, so that the telescopic component 266 is not corroded or damaged by the slurry when it is immersed in the slurry.

[0027] For example, see below. Figure 6 A reinforcing beam 268 is fixedly installed on the slide rail 267 and is fixedly connected to the main shaft 261 to ensure the stability of the slide rail 267 as it rotates with the main shaft 261.

[0028] For example, see below. Figure 1 The sludge storage tank 2 receives the slurry generated by the electrochemical device 1 through the sludge discharge pipe 11. The sludge storage tank 2 is connected to the water outlet pipe 201, which is used to discharge the supernatant. The output end of the sludge pump 3 is connected to the sludge inlet pipe 31. The sludge pump 3 transports the sludge to the dewatering equipment 4 through the sludge inlet pipe 31. The dewatering equipment 4 transfers the dewatered sludge into the sludge silo 5 through the dry sludge pipe 41.

[0029] It should be noted that the dewatering equipment 4 can be a centrifugal dewatering machine, a plate and frame filter press, or a screw press; no specific limitation is made here. The sludge after secondary dewatering by the dewatering equipment 4 has a moisture content of 50% to 70% and is stored in the sludge silo 5.

[0030] It should be noted that, as Figure 1 As shown, the dewatering equipment 4 also returns the filtrate produced by the dewatering of sludge to the sludge storage tank 2 through the filtrate pipe 51, so as to discharge it together with the supernatant that has settled in the sludge storage tank 2 itself, or the filtrate is returned to the wastewater system of the plant area to realize the recycling of the dewatered water.

[0031] For example, see below. Figure 3 and Figure 4 An inlet baffle 23 is fixedly installed on the inner side of the pool body 202. An inlet trough 21 is opened on the side of the inlet baffle 23 facing the pool body 202. The inlet trough 21 is connected to the sludge discharge pipe 11, and a feed hole 211 is opened at the bottom of the inlet trough 21. This allows the slurry to be discharged into the inlet trough 21 and then enter the pool body 202 through the feed hole 211. Figure 2 As shown, multiple feed holes 211 are evenly arranged. A weir plate 24 is provided on the inner side of the water inlet baffle 23. A water outlet groove 22 is opened on the side of the weir plate 24 facing the water inlet baffle 23. The water outlet groove 22 is connected to the water outlet pipe 201. (Continue reading...) Figure 5 The upper end of the weir plate 24 is higher than the lower end of the feed hole 211, so that after the slurry enters the tank 202 from the feed hole 211, it will not overflow into the outlet tank 22 with the supernatant before settling.

[0032] For example, see below. Figure 5 The lower end of the inlet baffle 23 is lower than the lower end of the feed hole 211. This allows the slurry to enter through the feed hole 211 and be forced to flow towards the bottom of the tank 202 by the inlet baffle 23, so that the high-density calcium carbonate sludge can fully settle to the bottom of the tank, preventing the slurry that has not settled and separated from being discharged with the supernatant and improving the clarity of the supernatant.

[0033] Moreover, such as Figure 4 As shown, the upper edge of the weir plate 24 is provided with protrusions, so that when the overflowing supernatant passes over the weir plate 24, the air bubbles generated on the liquid surface are punctured by the protrusions, preventing the air bubbles from entering the outlet tank 22 and avoiding foam accumulation that hinders the overflow of the supernatant.

[0034] For example, see below. Figure 5 and Figure 9 The device of the present invention also includes a defoaming component, which includes a defoaming drive 7, a cantilever 71, and a spiked plate 72. For example, the defoaming drive 7 is disposed on the walkway plate 27, and the stirring drive 25 is also disposed on the walkway plate 27. The walkway plate 27 is mounted on the pool body 202. It should be noted that a step ladder should be provided on one side of the pool body 202 so that the staff can reach the walkway plate 27 to observe and inspect the operation of the equipment in the pool body 202. The output end of the defoaming drive 7 is drivenly connected to a sleeve 75, which is rotatably sleeved on the main shaft 261. A retainer 76 is fixedly connected to the side of the sleeve 75, and a cantilever 71 is fixedly connected to the retainer 76. The cantilever 71 extends radially along the rotation of the sleeve 75, and a spiked plate 72 is rotatably disposed at the lower end of the cantilever 71. The clip 76 is mounted on the sleeve 75, which causes the sleeve 75 to drive the cantilever 71 to rotate. This allows the protruding barbs at the lower end of the barb 72 to sweep across the surface of the supernatant, breaking the foam and achieving defoaming. The barb 72 is also mounted on the cantilever 71 so that when the barb 72 rotates, it is tilted and swept across the supernatant under the buoyancy of the supernatant, preventing the barb 72 from agitating the supernatant.

[0035] Continue reading Figure 4The lower end of the weir plate 24 is fixedly provided with an overlapping plate 73. The end of the cantilever 71 away from the sleeve 75 overlaps on the overlapping plate 73, and the end of the cantilever 71 close to the sleeve 75 overlaps on the protective sleeve 74, so as to achieve stability during the rotation of the cantilever 71.

[0036] It should be noted that, in use, the slurry discharged from the electrochemical device 1 is transported through the sludge discharge pipe 11 to the water inlet trough 21 in the tank body 202, and enters the tank body 202 through the feed inlet 211. At this time, under the drive of the stirring drive 25, the main shaft 261 drives the slide rail 267 to rotate, so that the scraper 262 stirs the sludge at the bottom of the tank body 202 to prevent it from caking. The telescopic component 266 is activated, so that the slider 264 slides along the slide rail 267, realizing the reciprocating movement of the extrusion column 263, thereby realizing the reciprocating extrusion of the extrusion column 263 on the scraper 262. During the extrusion process, the scraper 262 changes from the initial "C" shape to a "3" shape, which causes the scraper 262 to push the sludge forward, and at the same time, the sludge at the scraper 262 that is partially protruding forward is arched to the left to prevent the sludge from adhering due to the extrusion in front of the scraper 262. Moreover, by using the defoaming drive component 7 to drive the sleeve 75 to rotate, the cantilever 71 drives the spike plate 72 to rotate, so as to puncture the air bubbles on the surface of the supernatant and achieve defoaming. The defoamed supernatant overflows through the weir plate 24 into the outlet tank 22 and is discharged from the outlet pipe 201. The pre-dewatered sludge is transported to the sludge pump 3 via the discharge pipe 203, and further transported to the dewatering equipment 4 via the sludge inlet pipe 31 for secondary dewatering. The dewatered sludge is then transferred to the sludge silo 5 via the dry sludge pipe 41 for storage. Moreover, the filtrate obtained after the dewatering equipment 4 is processed can be returned to the sludge storage tank 2 via the filtrate pipe 51, so as to be discharged together with the supernatant that has settled in the sludge storage tank 2.

[0037] In another embodiment, the present invention also provides an automatic dewatering method for electrochemical descaling of circulating water, applied to an automatic dewatering device for electrochemical descaling of circulating water, the dewatering method comprising the following steps: The slurry generated by the scale discharge from the electrochemical device 1 is transported to the scale storage tank 2 for pre-dewatering treatment; The slurry at the bottom of the tank 202 is stirred by the scraper 262, and the extrusion column 263 is driven to move back and forth against the arched side of the scraper 262 by the extrusion reciprocating assembly, so that the bending angle of the scraper 262 changes periodically with the movement of the extrusion column 263, thereby preventing the mud at the bottom of the tank 202 from caking. The pre-dewatered sludge is transported to the dewatering equipment 4 by the sludge pump 3 for secondary dewatering.

[0038] This method enables multiple dewatering treatments of the slurry discharged from the electrochemical device 1. During the pre-dewatering treatment, the slurry is stirred by scraper 262, which effectively prevents the sludge from hardening at the bottom of the tank 202 after sedimentation.

[0039] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An automatic dewatering device for electrochemical descaling of circulating water, characterized in that, include: A sludge conditioning tank is used to pre-dehydrate the slurry generated by the discharge of scale from an electrochemical device. The sludge conditioning tank includes a tank body, a stirring drive, and a stirring component. The stirring component is disposed in the tank body and includes a main shaft, a scraper, an extrusion column, and an extrusion reciprocating assembly. The output end of the stirring drive is driven and connected to the main shaft. A scraper is disposed on the lower side of the main shaft. The scraper arches backward in its rotation direction. The extrusion column is located on the rear side in the rotation direction of the scraper, and the extrusion column rubs against the rear side of the scraper. The output end of the extrusion reciprocating assembly is driven and connected to the extrusion column, which is used to drive the extrusion column to reciprocate along the rotation radial direction of the main shaft. The equipment includes a dewatering device and a sludge pump. The input end of the sludge pump is connected to the bottom of the sludge storage tank. The sludge pump is used to transport the sludge from the bottom of the sludge storage tank to the dewatering device, which is used to perform secondary dewatering treatment on the sludge.

2. The automatic dewatering device for electrochemical descaling of circulating water according to claim 1, characterized in that, The sludge storage tank receives the slurry generated by the electrochemical device through a sludge discharge pipe. The sludge storage tank is connected to an outlet pipe for discharging the supernatant. The output end of the sludge pump is connected to an inlet pipe. The sludge pump transports the sludge to the dewatering equipment through the inlet pipe. The dewatering equipment transfers the dewatered sludge into the sludge silo through a dry sludge pipe.

3. The automatic dewatering device for electrochemical descaling of circulating water according to claim 2, characterized in that, The dewatering equipment also returns the filtrate produced from the dewatering of sludge to the sludge storage tank or the plant's wastewater system via a filtrate press pipe.

4. An automatic dewatering device for electrochemical descaling of circulating water according to claim 2, characterized in that, The extrusion reciprocating assembly includes a telescopic component, a slide rail, and a slider. The inner end of the slide rail is fixedly connected to the main shaft via a locking block. An installation block is fixedly connected to the lower end of the slide rail. The scraper is fixedly connected to the slide rail via the installation block, and a slider is slidably mounted on the slide rail. The extrusion column is rotatably mounted on the lower end of the slider, and a retaining ring is fixedly provided on the upper end of the slider. A protective sleeve is also fixedly provided on the main shaft. The main body of the telescopic component is rotatably mounted on the protective sleeve. The telescopic end of the telescopic component is rotatably connected to the retaining ring, and a protective sleeve is fitted at the mounting point of the telescopic component and the protective sleeve.

5. An automatic dewatering device for electrochemical descaling of circulating water according to claim 4, characterized in that, An inlet baffle is fixedly installed on the inner side of the pool. An inlet trough is opened on the side of the inlet baffle facing the pool. The inlet trough is connected to the sludge discharge pipe. A feed hole is opened at the bottom of the inlet trough. A weir plate is installed on the inner side of the inlet baffle. An outlet trough is opened on the side of the weir plate facing the inlet baffle. The outlet trough is connected to the outlet pipe. The upper end of the weir plate is higher than the lower end of the feed hole.

6. An automatic dewatering device for electrochemical descaling of circulating water according to claim 5, characterized in that, The lower end of the water inlet baffle is lower than the lower end of the feed inlet.

7. An automatic dewatering device for electrochemical descaling of circulating water according to claim 5, characterized in that, The upper edge of the weir plate is provided with protruding spikes.

8. An automatic dewatering device for electrochemical descaling of circulating water according to claim 5, characterized in that, It also includes a defoaming component, which includes a defoaming drive, a cantilever, and a barbed plate. The output end of the defoaming drive is connected to a sleeve, which is rotatably sleeved on the main shaft. A retainer is fixedly connected to the side of the sleeve, and a cantilever is fixedly connected to the retainer. The cantilever extends radially along the rotation of the sleeve, and a barbed plate is rotatably provided at the lower end of the cantilever.

9. An automatic dewatering device for electrochemical descaling of circulating water according to claim 8, characterized in that, The lower end of the weir plate is fixedly provided with an overlapping plate, and the end of the cantilever away from the sleeve overlaps on the overlapping plate.

10. An automatic dewatering method for electrochemical descaling of circulating water, characterized in that, The automatic dewatering device for electrochemical descaling of circulating water according to claim 1 includes the following steps: The slurry generated from the scale discharge of the electrochemical device is transported to the scale storage tank for pre-dewatering treatment; The slurry at the bottom of the tank is stirred by a scraper, and the extrusion column is driven to move back and forth against the arched side of the scraper by the extrusion reciprocating assembly. This causes the bending angle of the scraper to change periodically with the movement of the extrusion column, thus preventing the mud at the bottom of the tank from hardening. The pre-dewatered sludge is pumped to a dewatering device for secondary dewatering.

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