Sulfate radical treatment device in chlor-alkali industry brine system

Abstract

The invention belongs to the technical field of water treatment, and mainly relates to a sulfate radical treatment device in a chlor-alkali industry brine system. Comprising a base; the reaction tank is fixedly connected to the base; the water feeder is fixedly connected into the reaction tank, the water feeder is fixedly connected and communicated with a liquid inlet pipe, and the reaction tank is fixedly connected with the liquid inlet pipe; the water outlet disc is hermetically and rotatably connected into the reaction tank, a plurality of drainage holes are formed in the water outlet disc, an ion exchange resin layer is arranged in the reaction tank, and the bottom of the reaction tank is fixedly connected and communicated with a liquid outlet pipe. By rotating the water outlet disc, continuously changing the position of the drainage hole in the water outlet disc and changing the flowing area of saline water in the ion exchange resin layer, the saline water uniformly flows through the ion exchange resin layer, the probability of flowing dead angles of the saline water is reduced, and the uniformity degree of reaction between the ion exchange resin layer and the saline water is improved; further, the removal probability of sulfate ions in the saline water is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a sulfate treatment device in a chlor-alkali industrial brine system. Background Art

[0002] In the chlor-alkali industry, sulfate treatment in the brine system is an important process. The presence of sulfate will have an adverse effect on subsequent processes, such as scaling, corrosion or reduced equipment efficiency. An ion exchanger is a device used to separate, purify or soften water. Its core principle is to use the characteristics of ion exchange resins to remove impurity ions in water through ion exchange reactions. It can effectively improve water quality and meet the needs of different scenarios. Therefore, ion exchangers are often used to eliminate harmful ions in brine. Ion exchangers are mainly divided into cation exchangers (removing cations in water) and anion exchangers (removing anions in water). ) and mixed ion exchangers (removing anions and cations from water at the same time), which are selected according to the characteristics of the ions mainly removed from the water. When the existing ion exchangers remove ions from water, the position of the drainage holes at the bottom of the ion exchangers is mostly fixed. When water flows through the ion exchange resin, the flow area of ​​the water flow in the ion exchange resin is mainly concentrated above the drainage holes. Dead corners of flow are very likely to occur at positions far away from the drainage holes, resulting in incomplete or over-complete reactions of local ion exchange resins, which makes it impossible for the ion exchange resin to react evenly with water, and ultimately makes it difficult to completely remove the ions that need to be removed from the water. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a sulfate treatment device in a chlor-alkali industrial brine system.

[0004] Technical solution: A sulfate treatment device in a chlor-alkali industrial brine system, comprising: a base; a reaction tank, fixedly connected to the base; a water inlet, fixedly connected to the reaction tank, the water inlet is fixedly connected and communicated with a liquid inlet pipe, and the reaction tank is fixedly connected to the liquid inlet pipe; a water outlet tray, sealed and rotatably connected to the reaction tank, the water outlet tray is provided with a plurality of drainage holes, an ion exchange resin layer is provided in the reaction tank between the water inlet and the water outlet tray, and the bottom of the reaction tank is fixedly connected and communicated with the liquid outlet pipe; a rotating assembly is arranged in the reaction tank, and is used to drive the water outlet tray to rotate and change the position of the drainage holes on the water outlet tray.

[0005] In addition, it is particularly preferred that the rotating assembly includes: a servo motor, the reaction tank is fixedly connected to a connecting frame, the servo motor is fixedly connected to the connecting frame of the reaction tank, and the output shaft of the servo motor is fixedly connected to a rotating table; a rotating shaft, fixedly connected to the water outlet plate, the rotating shaft is splined to a transmission plate located outside the reaction tank, and the rotating table is fitted with the transmission plate; an adjustment assembly, arranged on the reaction tank, for changing the position of the transmission plate.

[0006] In addition, it is particularly preferred that the adjustment component includes: a first gear, rotatably connected to the reaction tank, the first gear is fixedly connected to a centrifugal disk, and the centrifugal disk is slidably connected to a plurality of push blocks; a sliding block, slidably and rotatably connected to the centrifugal disk, all of the push blocks are used to jointly push the sliding block to move, the sliding block is limitedly slidably connected to the transmission disk, and a first elastic member is arranged between the sliding block and the centrifugal disk; a driving component, arranged in the water inlet, and used to drive the first gear to rotate.

[0007] In addition, it is particularly preferred that the drive assembly includes: a sleeve, which is sealingly rotatably connected to the reaction tank, the water inlet and the rotating shaft are both sealingly rotatably connected to the sleeve, and the sleeve is fixedly connected to a turbofan located in the water inlet; a second gear, fixedly connected to the sleeve, and the second gear is meshed with the first gear.

[0008] Furthermore, it is particularly preferred that a pitch circle radius of the second gear is larger than a pitch circle radius of the first gear.

[0009] In addition, it is particularly preferred that it also includes: an anti-blocking component, which is arranged in the reaction tank and is used for regularly recoil flushing the drainage holes on the water outlet tray, and the anti-blocking component includes: a plurality of recoil shells, which are all fixedly connected to the water outlet tray, and the drainage holes on the water outlet tray are connected to the adjacent recoil shells, the recoil shells are fixedly connected and connected to the drainage cylinder, and the recoil shells are sealingly and slidably connected to the recoil pistons; a sliding component, which is arranged in the reaction tank and is used to drive all the recoil pistons to slide along the adjacent recoil shells.

[0010] In addition, it is particularly preferred that the recoil piston is slidably connected to a push rod, and a second elastic member is provided between the recoil piston and the push rod.

[0011] In addition, it is particularly preferred that the sliding assembly includes: a sliding ring, which is fixedly connected to a fixed frame in the reaction tank, the sliding ring is splined to the fixed frame, the sliding ring is fixedly connected to circumferentially distributed extrusion blocks, and the extrusion blocks are used to push all the push rods to move; a pushing assembly, which is arranged on the sliding ring and is used to periodically drive the sliding ring to slide along the fixed frame in the reaction tank.

[0012] In addition, it is particularly preferred that the pushing assembly includes: a rotating member, rotatably connected to the water outlet tray; a clamping block, fixedly connected to the rotating member, the inner wall of the sliding ring is provided with a sliding groove, and the clamping block slides in the sliding groove; a transmission assembly, arranged on the rotating shaft, for driving the rotating member to rotate.

[0013] In addition, it is particularly preferred that the transmission assembly includes: a third gear fixedly connected to the water outlet tray; a fourth gear rotatably connected to the inside of the reaction tank, the third gear meshing with the fourth gear; a gear ring fixedly connected to the rotating member, the gear ring meshing with the fourth gear.

[0014] Beneficial effects of the present invention: 1. The present invention rotates the water outlet plate to continuously change the position of the drainage hole on the water outlet plate, thereby changing the flow area of ​​the brine in the ion exchange resin layer, allowing the brine to flow evenly through the ion exchange resin layer, reducing the probability of the brine flowing into dead corners, and improving the uniformity of the reaction between the ion exchange resin layer and the brine, thereby increasing the probability of removing sulfate ions in the brine.

[0015] 2. By automatically detecting the brine delivery speed, when the brine delivery speed changes, the rotation speed of the water outlet plate is automatically adjusted to make the brine flow speed change synchronously with the speed of the water outlet plate, ensuring that the ion exchange resin layer reacts evenly with the brine and stably removes the sulfate content in the brine.

[0016] 3. By automatically backflushing the drain holes on the water outlet plate regularly, the resin is separated from the drain holes on the water outlet plate to ensure that the ion exchange resin layer reacts evenly with the brine. At the same time, for completely blocked drain holes, the push rod slides along the backflush piston to automatically offset the recoil force of the backflush piston on the drain holes on the water outlet plate, thereby reducing the operating load of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the reaction tank of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the first gear and the centrifugal disk of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the sliding block of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the recoil shell and the sliding ring of the present invention; Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the recoil shell of the present invention; Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the rotating member of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the sliding groove of the present invention.

[0018] In the figure: 1, base, 2, reaction tank, 3, water inlet, 4, water outlet plate, 5, ion exchange resin layer, 201, servo motor, 202, rotating table, 203, rotating shaft, 204, transmission plate, 301, first gear, 302, centrifugal plate, 303, push block, 304, sliding block, 305, first elastic member, 306, sleeve, 307, turbofan, 308, second gear, 401, recoil shell, 402, drainage cylinder, 403, recoil piston, 404, push rod, 405, second elastic member, 406, sliding ring, 407, extrusion block, 501, rotating member, 502, block, 503, sliding groove, 504, third gear, 505, fourth gear, 506, gear ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0020] When an existing ion exchanger removes ions from water, the drainage holes at the bottom of the ion exchanger are in a fixed state, and the water flow tends to concentrate on the top of the drainage holes. Therefore, dead spots are easily generated far away from the drainage holes, causing the local ion exchange resin to react incompletely or over-completely. This uneven water flow distribution prevents the ion exchange resin from reacting evenly with water, resulting in difficulty in completely removing the target ions in the water.

[0021] A sulfate treatment device in a chlor-alkali industrial brine system, such as Figure 1-Figure 3 As shown, it includes: a base 1; a reaction tank 2, fixedly connected to the base 1; a water inlet 3, fixedly connected to the reaction tank 2, the water inlet 3 is fixedly connected and connected with a liquid inlet pipe, and the reaction tank 2 is fixedly connected to the liquid inlet pipe; a water outlet tray 4, sealed and rotatably connected to the reaction tank 2, a plurality of drainage holes are arranged on the water outlet tray 4, an ion exchange resin layer 5 is arranged between the water inlet 3 and the water outlet tray 4 in the reaction tank 2, and the bottom of the reaction tank 2 is fixedly connected and connected with the liquid outlet pipe; a rotating component is arranged in the reaction tank 2, and is used to drive the water outlet tray 4 to rotate and change the position of the drainage holes on the water outlet tray 4.

[0022] In the above scheme, the reaction tank 2 is made of glass fiber reinforced plastics. The reaction tank 2 needs to contact salt water and sulfate medium, and needs a material with strong corrosion resistance. The water inlet 3 is composed of a main tube and a plurality of auxiliary tubes distributed at equal intervals in the circumferential direction, so that the salt water flows downward evenly and reacts with the ion exchange resin layer 5. The drainage holes on the water outlet plate 4 are distributed at equal intervals in the circumferential direction. The ion exchange resin layer 5 is anionic (such as D301 and D201). The water outlet plate 4 and the ion exchange resin layer 5 are in a fitted state. The present invention rotates the water outlet plate 4 and continuously changes the position of the drainage holes on the water outlet plate 4, so that the flow area of ​​the salt water in the ion exchange resin layer 5 is changed, ensuring that the salt water flows evenly through the ion exchange resin layer 5, reducing the probability of the salt water in the ion exchange resin layer 5 having a dead angle of flow, improving the uniformity of the reaction between the ion exchange resin layer 5 and the salt water, and improving the probability of removing sulfate ions in the salt water.

[0023] Specifically, Figure 1-Figure 3 As shown, the rotating assembly includes: a servo motor 201, the reaction tank 2 is fixedly connected to a connecting frame, the servo motor 201 is fixedly connected to the connecting frame of the reaction tank 2, and the output shaft of the servo motor 201 is fixedly connected to a rotating table 202; a rotating shaft 203 is fixedly connected to a water outlet plate 4, the rotating shaft 203 is spline-connected to a transmission plate 204 located outside the reaction tank 2, and the rotating table 202 is fitted with the transmission plate 204; an adjusting assembly is arranged on the reaction tank 2, and is used to change the position of the transmission plate 204.

[0024] In the above scheme, the rotating table 202 is a truncated cone structure, and the side of the rotating table 202 with a larger diameter is located at the top, and the side with a smaller diameter is located at the bottom. The outside of the rotating table 202 and the transmission disk 204 are both provided with rough surfaces for providing sufficient friction force, so that the rotation of the water outlet disk 4 is realized through the rotating table 202, the transmission disk 204 and the rotating shaft 203.

[0025] Specifically, Figure 2-Figure 4 As shown, the adjustment component includes: a first gear 301, which is rotatably connected to the reaction tank 2, the first gear 301 is fixedly connected to the centrifugal disk 302, and the centrifugal disk 302 is slidably connected to a plurality of push blocks 303; a sliding block 304, which is slidably and rotatably connected to the centrifugal disk 302, all the push blocks 303 are used to jointly push the sliding block 304 to move, the sliding block 304 is limitedly slidably connected to the transmission disk 204, and a first elastic member 305 is arranged between the sliding block 304 and the centrifugal disk 302; a driving component, which is arranged in the water inlet 3, and is used to drive the first gear 301 to rotate.

[0026] In the above scheme, the first gear 301 is located at the top of the reaction tank 2, the number of push blocks 303 can be freely set, the push blocks 303 are circumferentially evenly spaced on the centrifugal disk 302, the central axis of the first gear 301 coincides with the central axis of the centrifugal disk 302, an inclined surface is provided on the upper side of the push block 303, a truncated cone groove is provided on the lower side of the sliding block 304, and the inclined surface of the push block 303 is in contact with the side of the truncated cone groove on the sliding block 304, so that the push block 303 pushes the sliding block 304 to slide upward along the centrifugal disk 302, the first elastic member 305 is a spring, and is used to drive the sliding block 304 to slide downward along the centrifugal disk 302, and the brine delivery speed is automatically detected. When the brine delivery speed changes, the rotation speed of the water outlet disk 4 is automatically adjusted, so that the brine flow speed and the rotation speed of the water outlet disk 4 change synchronously, ensuring that the ion exchange resin layer 5 reacts evenly with the brine and stably removes the sulfate content in the brine.

[0027] Specifically, Figure 2-Figure 4 As shown, the driving assembly includes: a sleeve 306, which is sealed and rotatably connected to the reaction tank 2, the water inlet 3 and the rotating shaft 203 are both sealed and rotatably connected to the sleeve 306, and the sleeve 306 is fixedly connected to a turbofan 307 located in the water inlet 3; a second gear 308, which is fixedly connected to the sleeve 306, and the second gear 308 is meshed with the first gear 301. The pitch circle radius of the second gear 308 is greater than the pitch circle radius of the first gear 301.

[0028] In the above scheme, the turbofan 307 is used to detect the actual conveying speed of the brine, and uses the thrust of the water flow to drive the sleeve 306 to rotate, so that the sleeve 306 drives the second gear 308 to rotate. The pitch circle radius of the second gear 308 is larger than the pitch circle radius of the first gear 301. When the second gear 308 rotates one circle, the first gear 301 rotates five to six circles, forming an acceleration system to avoid the slow flow speed of the brine and the inability to provide sufficient rotation speed to the centrifugal disk 302.

[0029] Working principle: when sulfate in brine needs to be treated, the brine to be treated enters the water inlet 3 through the liquid inlet pipe, and the brine enters the reaction tank 2 evenly through the water inlet 3, so that the brine gradually fills the reaction tank 2, and then the liquid outlet pipe at the bottom of the reaction tank 2 is opened. At this time, the brine flows from top to bottom in the reaction tank 2, and the brine passes through the ion exchange resin layer 5. The ion exchange resin layer 5 eliminates sulfate ions in the brine through exchange reaction. The clean water after the reaction flows downward along the drainage hole on the water outlet tray 4, and is finally discharged along the liquid outlet pipe at the bottom of the reaction tank 2.

[0030] When the liquid outlet pipe is opened, the servo motor 201 is turned on, and the output shaft of the servo motor 201 drives the rotating table 202 to rotate, so that the rotating table 202 drives the rotating shaft 203 to rotate through the transmission plate 204, and the rotating shaft 203 drives the water outlet plate 4 to rotate, and the position of the drainage hole on the water outlet plate 4 is continuously changed, so that the flow area of ​​the brine in the ion exchange resin layer 5 is changed, and the brine flows evenly through the ion exchange resin layer 5, so as to avoid the drainage hole position on the water outlet plate 4 being fixed, resulting in the flow area of ​​the brine in the reaction tank 2 being stable, and then the flow dead angle appears, resulting in uneven reaction between the ion exchange resin layer 5 and the brine, thereby reducing the probability of removing sulfate ions in the brine.

[0031] In the process of removing sulfate ions from salt water, since the salt water is transported by pumping, after long-term use, due to the wear and aging of the internal parts of the pump, it is very easy to cause the pumping speed of the salt water to deviate, resulting in the flow speed of the salt water not matching the rotation speed of the water outlet plate 4. Due to the change in the flow rate of the salt water, the rotation speed of the drain hole is insufficient or faster than the salt water speed, resulting in the change in the amount of salt water flowing through some areas, resulting in the inability to completely remove sulfate ions in the salt water, and then causing the ion exchange resin layer 5 to react unevenly with the salt water. When the salt water enters the reaction tank 2 from the water inlet 3, the salt water passes through the turbofan 3. 07 drives the sleeve 306 to rotate, the sleeve 306 drives the second gear 308 to rotate, the second gear 308 drives the centrifugal disk 302 to rotate through the first gear 301, so that the circumferentially distributed push blocks 303 slide outward due to the centrifugal force, and push the sliding block 304 to move upward, the sliding block 304 drives the transmission disk 204 to move upward, and the first elastic member 305 is compressed at the same time, until the centrifugal force on the push block 303 is balanced by the sum of the elastic force of the first elastic member 305 and the gravity of the sliding block 304, the transmission disk 204 stops moving, and at this time the rotation speed of the water outlet disk 4 is in a matching state with the flow speed of the salt water.

[0032] When the pumping speed changes, the brine speed is increased for explanation here. The brine in the water inlet 3 drives the turbofan 307 to rotate faster, that is, the centrifugal disc 302 rotates faster. At this time, the centrifugal force on the circumferentially distributed push block 303 increases, and it further slides outward along the centrifugal disc 302 and pushes the sliding block 304 to move upward. At the same time, the first elastic member 305 is further compressed, so that the sliding block 304 drives the transmission disc 204 to move upward, increasing the transmission ratio of the rotating table 202 to the transmission disc 204, accelerating the rotation speed of the transmission disc 204, and making the transmission disc 204 drive the water outlet disc 4 to rotate synchronously through the rotating shaft 203 to ensure that the ion exchange resin layer 5 reacts evenly with the brine and stably removes the sulfate content in the brine. When the centrifugal force on the push block 303 and the sum of the elastic force of the first elastic member 305 and the gravity of the sliding block 304 are balanced again, the transmission disc 204 stops moving.

[0033] After the exchange capacity of the ion exchange resin layer 5 decreases, the injection of brine into the liquid inlet pipe is stopped, and the regeneration liquid is injected into the liquid inlet pipe to make the regeneration liquid react with the ion exchange resin layer 5 to restore the exchange capacity of the ion exchange resin layer 5 until the exchange capacity of the ion exchange resin layer 5 is fully restored, and the regeneration liquid is switched to brine again to continue to remove sulfate radicals in the brine, and this cycle is repeated until the treatment of the brine is completed, and the injection of brine into the reaction tank 2 is stopped, and the brine in the reaction tank 2 is emptied, and then the servo motor 201 and the lower liquid outlet pipe are closed. At this time, there is no flowing brine in the water inlet 3, that is, the turbofan 307 cannot be driven to rotate, the centrifugal disc 302 stops rotating, the first elastic member 305 is reset and drives all the push blocks 303 to reset, and the transmission disc 204 is reset to the initial state. When it is necessary to remove sulfate radicals in the brine again, the above steps are repeated.

[0034] In a further embodiment, specifically, Figure 5 and Figure 6 As shown, it also includes: an anti-blocking component, which is arranged in the reaction tank 2 and is used for regularly recoiling the drainage holes on the water outlet tray 4. The anti-blocking component includes: a recoil shell 401, which has a plurality of recoil shells, all of which are fixedly connected to the water outlet tray 4, and the drainage holes on the water outlet tray 4 are connected to the adjacent recoil shells 401, the recoil shells 401 are fixedly connected and connected to the drainage cylinder 402, and the recoil shells 401 are sealed and slidably connected to the recoil pistons 403; a sliding component, which is arranged in the reaction tank 2 and is used to drive all the recoil pistons 403 to slide along the adjacent recoil shells 401; the recoil pistons 403 are slidably connected to the push rods 404, and a second elastic member 405 is arranged between the recoil pistons 403 and the push rods 404.

[0035] In the above scheme, the number of recoil shells 401 can be freely set, and they are evenly spaced on the water outlet tray 4 in the circumferential direction, so that all the drainage holes on the water outlet tray 4 are connected to the recoil shell 401, and the drainage cylinder 402 is connected to the middle of the recoil shell 401, leaving a sliding distance for the recoil piston 403 when recoiling. Figure 6 As shown, the recoil piston 403 is located below the connection between the drain cylinder 402 and the recoil shell 401. The second elastic member 405 is a spring. When the drain hole on the water outlet tray 4 corresponding to the adjacent recoil shell 401 is completely blocked, the second elastic member 405 is compressed to offset the recoil force of the recoil piston 403 on the drain hole. By recoiling the drain hole on the water outlet tray 4, the resin is separated from the drain hole on the water outlet tray 4, the blocked state of the drain hole on the water outlet tray 4 is released, and the ion exchange resin layer 5 is ensured to react evenly with the brine.

[0036] Specifically, Figure 2 , Figure 5 and Figure 7As shown, the sliding assembly includes: a sliding ring 406, which is fixedly connected to a fixed frame in the reaction tank 2, the sliding ring 406 is splined to the fixed frame, the sliding ring 406 is fixedly connected to circumferentially distributed extrusion blocks 407, and the extrusion blocks 407 are used to push all push rods 404 to move; a pushing assembly is arranged on the sliding ring 406, and is used to periodically drive the sliding ring 406 to slide along the fixed frame in the reaction tank 2.

[0037] In the above scheme, the sliding ring 406 and the extrusion block 407 are both provided with a corrosion-resistant layer to resist the erosion of salt water and extend the service life. The sliding ring 406 is located below the water outlet tray 4, and the extrusion block 407 has symmetrically distributed inclined surfaces to push the push rod 404 to move upward, so that the push rod 404 drives the adjacent recoil piston 403 to perform a recoil operation. The number of the extrusion blocks 407 is at most half of the number of the recoil shells 401, ensuring that the salt water in half of the recoil shells 401 is in a normal flow state to maintain the normal operation of the device.

[0038] Specifically, Figure 5 , Figure 7 and Figure 8 As shown, the pushing assembly includes: a rotating member 501, which is rotatably connected to the water outlet tray 4; a clamping block 502, which is fixedly connected to the rotating member 501, and the inner wall of the sliding ring 406 is provided with a sliding groove 503, and the clamping block 502 slides in the sliding groove 503; a transmission assembly, which is arranged on the rotating shaft 203 and is used to drive the rotating member 501 to rotate.

[0039] In the above scheme, the rotating member 501 and the clamping block 502 are both provided with a corrosion-resistant layer, the sliding groove 503 is composed of a short annular groove, a long annular groove and two spiral grooves connected end to end, and the length of the long annular groove is five to six times the length of the short annular groove. The clamping block 502 slides along the sliding groove 503, so that the sliding ring 406 slides back and forth up and down along the fixed frame inside the reaction tank 2, thereby causing the recoil piston 403 to recoil the drainage hole on the water outlet plate 4.

[0040] Specifically, Figure 2 , Figure 7 and Figure 8 As shown, the transmission assembly includes: a third gear 504, fixedly connected to the water outlet tray 4; a fourth gear 505, rotatably connected to the inside of the reaction tank 2, the third gear 504 meshing with the fourth gear 505; a gear ring 506, fixedly connected to the rotating member 501, the gear ring 506 meshing with the fourth gear 505.

[0041] In the above scheme, the third gear 504, the fourth gear 505 and the gear ring 506 are all provided with a corrosion-resistant layer, the pitch circle radius of the third gear 504 is smaller than the pitch circle radius of the fourth gear 505, and the pitch circle radius of the fourth gear 505 is smaller than the pitch circle radius of the gear ring 506, so that the water outlet plate 4 drives the third gear 504 to rotate five to six circles, and the gear ring 506 can rotate one circle, forming a deceleration system, thereby realizing that the sliding ring 406 slides upward along the fixed frame in the reaction tank 2 regularly, avoiding continuous recoil of the water outlet plate 4, affecting the flow of water in the reaction tank 2, and reducing the degree of removal of sulfate ions in the brine by the ion exchange resin layer 5.

[0042] Working principle: When the ion exchange resin layer 5 in the reaction tank 2 processes the brine, the resin will age after long-term use, causing the particles to break or become smaller. These fine particles may enter the drainage hole and block the channel, and finally block the drainage hole on the water outlet tray 4, thereby causing the water flow to be unable to flow downward evenly, reducing the uniform reaction between the ion exchange resin layer 5 and the brine. During the rotation of the water outlet tray 4, the brine entering the drainage hole of the water outlet tray 4 will enter the corresponding recoil shell 401, and then enter the adjacent drainage tube 402 from the recoil shell 401. The water continues to flow downward from the drainage tube 402 and is finally discharged along the liquid outlet pipe at the bottom of the reaction tank 2.

[0043] When the water outlet tray 4 drives all the recoil shells 401 at the bottom to rotate, the recoil shell 401 drives the push rod 404 inside to rotate synchronously. The push rod 404 rotates and contacts the adjacent extrusion block 407. The extrusion block 407 squeezes the adjacent push rod 404, so that the push rod 404 is forced to drive the recoil piston 403 to slide along the recoil shell 401, pushing the water in the recoil shell 401 upward and draining it along the drainage hole on the water outlet tray 4, thereby forming a recoil, impacting the resin blocked in the drainage hole of the water outlet tray 4, and releasing the blockage of the drainage hole on the water outlet tray 4. When the drainage hole corresponding to the recoil shell 401 is completely blocked, At this time, the recoil piston 403 is difficult to push, so that the recoil piston 403 and the push rod 404 slide relative to each other, and the second elastic member 405 is compressed to offset the thrust of the push rod 404, thereby preventing the servo motor 201 from increasing load and being damaged. When the push rod 404 is separated from the extrusion block 407, the recoil piston 403 is reset downward by the water flow, and the recoil piston 403 drives the push rod 404 to reset downward synchronously through the second elastic member 405, so that the salt water in the reaction tank 2 continues to flow along the drainage hole on the water outlet tray 4, the recoil shell 401 and the drainage cylinder 402, and is discharged along the liquid outlet pipe.

[0044] During the rotation of the water outlet tray 4, the water outlet tray 4 drives the third gear 504 at the bottom to rotate synchronously, the third gear 504 drives the gear ring 506 to rotate through the fourth gear 505, the gear ring 506 drives the rotating member 501 to rotate, the rotating member 501 drives the block 502 thereon to rotate, the block 502 slides along the sliding groove 503 of the sliding ring 406, when the block 502 is located in the long annular groove of the sliding groove 503, the upper side surface of the sliding ring 406 is separated from the plurality of push rods 404 and leaves a certain distance (the distance is greater than the height of the extrusion block 407), the push rod 404 cannot contact the extrusion block 407, the recoil shell 401 cannot rotate to recoil the drainage hole of the corresponding water outlet tray 4, and when the block When 502 is located in the short annular groove of the sliding groove 503, the sliding ring 406 is located on the upper side of the fixing frame of the reaction tank 2. At this time, the upper side surface of the sliding ring 406 is in contact with the push rod 404, and the recoil shell 401 drives the internal push rod 404 to contact with the extrusion block 407, thereby recoiling the drainage hole of the water outlet plate 4. Since the radius of the gear ring 506 is greater than the radius of the third gear 504, the third gear 504 rotates five or six circles, and the gear ring 506 rotates one circle, that is, the sliding ring 406 moves upward regularly to recoil the water outlet plate 4, avoiding continuous recoil of the water outlet plate 4, affecting the flow of water in the reaction tank 2, and reducing the degree of removal of sulfate ions in the brine by the ion exchange resin layer 5.

[0045] This continues until the salt water stops being processed, at which time the servo motor 201 is turned off, the water outlet tray 4 stops rotating, and the corresponding recoil housing 401 and the third gear 504 stop rotating. When the salt water needs to remove sulfate ions again, the above steps are repeated.

[0046] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A sulfate treatment device in a chlor-alkali industrial brine system, characterized in that: Included are: Base (1); A reaction tank (2) fixedly connected to the base (1); A water inlet (3) is fixedly connected to the reaction tank (2); the water inlet (3) is fixedly connected to and communicates with a liquid inlet pipe; the reaction tank (2) is fixedly connected to the liquid inlet pipe; A water outlet plate (4) is sealed and rotatably connected to the reaction tank (2); a plurality of drainage holes are provided on the water outlet plate (4); an ion exchange resin layer (5) is provided in the reaction tank (2) and is located between the water inlet (3) and the water outlet plate (4); and a bottom of the reaction tank (2) is fixedly connected and communicated with a liquid outlet pipe; A rotating assembly is arranged in the reaction tank (2) and is used to drive the water outlet tray (4) to rotate, thereby changing the position of the drainage hole on the water outlet tray (4).

2. The sulfate treatment device in a chlor-alkali industrial brine system according to claim 1, characterized in that: The rotating assembly comprises: A servo motor (201), the reaction tank (2) being fixedly connected to a connecting frame, the servo motor (201) being fixedly connected to the connecting frame of the reaction tank (2), and an output shaft of the servo motor (201) being fixedly connected to a rotating platform (202); A rotating shaft (203) is fixedly connected to the water outlet plate (4); the rotating shaft (203) is spline-connected to a transmission plate (204) located outside the reaction tank (2); and the rotating platform (202) is in close contact with the transmission plate (204); An adjustment component is arranged on the reaction tank (2) and is used to change the position of the transmission disc (204).

3. The sulfate treatment device in a chlor-alkali industrial brine system according to claim 2, characterized in that: The adjustment component includes: A first gear (301) is rotatably connected to the reaction tank (2); the first gear (301) is fixedly connected to a centrifugal disk (302); and the centrifugal disk (302) is slidably connected to a plurality of push blocks (303); A sliding block (304) is slidably and rotatably connected to the centrifugal disk (302); all the push blocks (303) are used to jointly push the sliding block (304) to move; the sliding block (304) is slidably connected to the transmission disk (204); and a first elastic member (305) is provided between the sliding block (304) and the centrifugal disk (302); A driving assembly is arranged in the water inlet (3) and is used to drive the first gear (301) to rotate.

4. The sulfate treatment device in a chlor-alkali industrial brine system according to claim 3 is characterized in that: The drive assembly comprises: A sleeve (306) is sealingly and rotatably connected to the reaction tank (2); the water inlet (3) and the rotating shaft (203) are both sealingly and rotatably connected to the sleeve (306); and the sleeve (306) is fixedly connected to a turbofan (307) located in the water inlet (3); The second gear (308) is fixedly connected to the sleeve (306), and the second gear (308) is meshed with the first gear (301).

5. The sulfate treatment device in the chlor-alkali industrial brine system according to claim 4 is characterized in that: The pitch circle radius of the second gear (308) is greater than the pitch circle radius of the first gear (301).

6. The sulfate treatment device in a chlor-alkali industrial brine system according to claim 2, characterized in that: Also included are: An anti-blocking component is arranged in the reaction tank (2) and is used for periodically backflushing the drainage holes on the water outlet tray (4). The anti-blocking component comprises: The recoil shells (401) have a plurality of them, all of which are fixedly connected to the water outlet tray (4), and the drainage holes on the water outlet tray (4) are connected to the adjacent recoil shells (401), the recoil shells (401) are fixedly connected and connected to the drainage cylinder (402), and the recoil shells (401) are sealingly and slidably connected to the recoil piston (403); A sliding assembly is arranged in the reaction tank (2) and is used to drive all the recoil pistons (403) to slide along adjacent recoil shells (401).

7. The sulfate treatment device in the chlor-alkali industrial brine system according to claim 6 is characterized in that: The recoil piston (403) is slidably connected to a push rod (404), and a second elastic member (405) is provided between the recoil piston (403) and the push rod (404).

8. The sulfate treatment device in the chlor-alkali industrial brine system according to claim 7 is characterized in that: The sliding assembly comprises: A sliding ring (406), the reaction tank (2) is fixedly connected to a fixing frame, the sliding ring (406) is spline-connected to the fixing frame, the sliding ring (406) is fixedly connected to circumferentially distributed extrusion blocks (407), and the extrusion blocks (407) are used to push all the push rods (404) to move; A pushing component is arranged on the sliding ring (406) and is used to periodically drive the sliding ring (406) to slide along the fixed frame inside the reaction tank (2).

9. The sulfate treatment device in the chlor-alkali industrial brine system according to claim 8, characterized in that: The pushing component comprises: A rotating member (501) rotatably connected to the water outlet tray (4); A clamping block (502) is fixedly connected to the rotating member (501); the inner wall of the sliding ring (406) is provided with a sliding groove (503); the clamping block (502) is located in the sliding groove (503) and slides; A transmission assembly is arranged on the rotating shaft (203) and is used to drive the rotating member (501) to rotate.

10. The sulfate treatment device in the chlor-alkali industrial brine system according to claim 9, characterized in that: The transmission assembly comprises: A third gear (504) fixedly connected to the water outlet tray (4); A fourth gear (505) is rotatably connected to the interior of the reaction tank (2), and the third gear (504) is meshed with the fourth gear (505); A gear ring (506) is fixedly connected to the rotating member (501), and the gear ring (506) is meshed with the fourth gear (505).

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