A seawater desalination water intake isolation and cleaning device

Abstract

This application relates to the field of cleaning of seawater desalination water intake, and particularly to a seawater desalination water intake isolation cleaning device. This device is installed at the front end of the water intake pipe at the seawater desalination system water intake. The seawater desalination system is provided with a concentrated brine outlet, and a discharge pipe is provided at the concentrated brine outlet. The device includes an isolation screen installed at the end of the water intake pipe, a cleaning system for cleaning the isolation screen, and a drive assembly for driving the isolation screen to reach the cleaning system. The cleaning system includes a cleaning bucket, a water inlet pipe connecting the cleaning bucket and the discharge pipe, and a water outlet pipe connecting the cleaning bucket and the discharge pipe. The cleaning bucket is provided with a cleaning opening for the isolation screen to enter the cleaning bucket, and is equipped with a shielding assembly for closing the cleaning opening. This application can automatically discharge the impurities washed from the isolation screen to a place far away from the seawater desalination system water intake, avoiding the re-blockage of the screen by the cleaned impurities, thereby improving the water intake efficiency of the seawater desalination system and reducing the labor intensity of operation and maintenance personnel.

Description

Technical Field

[0001] This application relates to the field of cleaning seawater desalination intakes, and particularly to a seawater desalination intake isolation cleaning device. Background Art

[0002] With the increasing shortage of global fresh water resources, seawater desalination, as a key water resource increment technology, is of irreplaceable significance in solving the global fresh water shortage problem. The reverse osmosis membrane method for seawater desalination is an advanced method that uses a pressure difference to drive desalination, and has significant advantages such as small floor area, short construction period, simple operation, high degree of automation, low investment cost, and relatively low energy consumption. However, various impurities contained in natural seawater can cause fouling and performance degradation of the reverse osmosis membrane, affecting its long-term effective operation. Therefore, when treating seawater by the reverse osmosis membrane method for seawater desalination technology, the impurities in the seawater are first preliminarily filtered through seawater desalination pretreatment.

[0003] Traditional seawater desalination pretreatment methods include coagulation sedimentation, flotation, and multi-media filtration, etc. However, these methods are difficult to continuously meet the high standard requirements of the reverse osmosis membrane for the influent water quality, which may lead to a reduction in the water production of the reverse osmosis system and a decline in operation stability. In contrast, ultrafiltration devices are widely used in the pretreatment of seawater desalination processes because of their simple operation process, high-quality and stable effluent water quality. However, the fouling problem of ultrafiltration membranes has become a key factor affecting the seawater desalination treatment efficiency and operating cost.

[0004] Especially in summer, there will be periodic outbreaks of marine phytoplankton in the seawater intake area of seawater desalination plants. Plankton such as Enteromorpha prolifera, Calanus sinicus, Sagitta crassa, and jellyfish colloids that enter the seawater desalination system will be broken into colloidal substances by pre-filtration devices such as self-cleaning filters, greatly increasing the pollution degree of ultrafiltration membranes and seriously affecting the operation of subsequent reverse osmosis units.

[0005] To ensure the stable operation of the seawater desalination system, an isolation screen is usually installed at the water intake. The isolation screen can effectively filter and screen these planktonic animals and plants, thus ensuring the stable operation of the system. However, the isolation screen is easily blocked by impurities after being used for a period of time. At this time, it needs to be cleaned manually or by a special cleaning device. The removed impurities need to be manually treated away from the water intake of the seawater desalination system to prevent these impurities from flowing back and blocking the isolation screen again. This not only greatly increases the workload and labor intensity of the staff, but also may affect the overall operation efficiency of the system. Summary of the Invention

[0006] In order to automatically process the impurities washed off from the isolation screen away from the water intake of the seawater desalination system, reduce the probability of the cleaned impurities clogging the screen again, and at the same time reduce the labor intensity of the staff, the present application provides a seawater desalination water intake isolation cleaning device.

[0007] The seawater desalination water intake isolation cleaning device provided by the present application adopts the following technical solutions:

[0008] A seawater desalination water intake isolation cleaning device is installed at the water intake of the seawater desalination system. A water intake pipe is installed at the water intake of the seawater desalination system, and a concentrated brine outlet is provided on the seawater desalination system. A discharge pipe for discharging the concentrated brine away from the water intake is installed at the concentrated brine outlet. It includes an isolation screen installed at the end of the water intake pipe, a cleaning system for cleaning the isolation screen, and a driving component for driving the isolation screen to reach the cleaning system. The cleaning system includes a cleaning bucket, a water inlet pipe connected between the cleaning bucket and the discharge pipe, and a water outlet pipe connected between the cleaning bucket and the discharge pipe. A cleaning port for the isolation screen to reach the inside of the cleaning bucket is opened on the cleaning bucket, and a shielding component for closing the cleaning port is provided on the cleaning bucket.

[0009] By adopting the above technical solutions, the water reaching the water intake pipe can be filtered through the isolation screen. When the isolation screen is blocked, the driving component can move the isolation screen into the cleaning bucket. At this time, the concentrated brine in the discharge pipe will flow along the water inlet pipe into the cleaning bucket, thereby flushing the isolation screen located in the cleaning bucket. The impurities after flushing will flow along the water outlet pipe into the discharge pipe with the concentrated brine and be discharged into the open sea through the discharge pipe. It can automatically process the impurities washed off from the isolation screen away from the water intake of the seawater desalination system, reduce the probability of the cleaned impurities clogging the screen again, achieve unattended operation and maintain the continuity of water intake. When the cleaning bucket does not need to clean the isolation screen, the shielding component can block the cleaning port, reducing the excessive discharge of the concentrated brine in the cleaning bucket into the sea and affecting the salt content of the water intake of the seawater desalination system.

[0010] Optionally, the isolation screen is a cylindrical shape with one end closed. The closed end of the isolation screen abuts against the water intake of the seawater desalination system. A plurality of the isolation screens are arranged end to end, and a bracket for supporting the isolation screen is also provided. The isolation screen is slidably connected to the bracket. The driving component is used to drive one of the isolation screens away from the water intake pipe into the cleaning bucket and drive the cleaned isolation screen onto the bracket.

[0011] By adopting the above technical solution, the isolation screen is designed as a cylinder with one end closed, and the closed end is abutted against the water intake of the seawater desalination system, while the inside of the isolation screen can be used to collect impurities such as plankton, effectively blocking plankton and other impurities from entering the water intake system, while also collecting impurities at the water intake, reducing the probability of the isolation screen being blocked by the impurities again. Multiple sections of isolation screens connected end to end can work continuously, improving the stability and flexibility of the system.

[0012] Optionally, sliders with T-shaped cross-sections are fixedly connected to the opposite side walls of the isolation screen, and the bracket includes support plates located on opposite sides of the isolation screen, and the two support plates have opposite sides provided with sliding grooves for the sliders to be embedded and slide, and the end of the sliding groove close to the water intake pipe is provided with a sliding-in groove for the slider to slide into the sliding groove, and the end of the sliding groove away from the water intake pipe is provided with a sliding-out groove for the slider to slide out of the sliding groove.

[0013] By adopting the above technical solution, the isolation screen can be fixed in position on the support plate and can also be made to slide within a certain range.

[0014] Optionally, the driving assembly includes a suction cup for adsorbing the isolation screen, a first linear driving member for driving the slider to slide out of the slide-out groove via the suction cup, a second linear driving member for driving the suction cup to move into the cleaning bucket, and a third linear driving member for driving the suction cup to move to the water intake pipe. A suction plate for adsorbing the suction cup is fixedly connected to the side wall of each isolation screen, and a toggle assembly is provided on the bracket for driving the isolation screen close to the water intake pipe to move away from the water intake pipe.

[0015] By adopting the above technical solution, the suction cup can be firmly adsorbed on the isolation screen, and the first linear drive component drives the slider to slide out of the slide-out groove, thereby realizing the removal of the isolation screen. The second linear drive component moves the suction cup and the isolation screen adsorbed thereon into the cleaning bucket, completing the position adjustment before cleaning. After cleaning is completed, the third linear drive component moves the suction cup and the isolation screen adsorbed thereon back to the water intake of the seawater desalination system to ensure that the isolation screen is accurately returned to its position after cleaning. In addition, the function of the toggle member is to push the isolation screen close to the water intake of the seawater desalination system to move away from the water intake when the drive assembly is working, thereby ensuring that the cleaned isolation screen can be smoothly inserted between other isolation screens and the water intake pipe.

[0016] Optionally, the toggling assembly includes a fourth linear drive member fixed to the bracket, a toggling rod hinged to the movable end of the fourth linear drive member, and a guide plate fixed to one side of the fourth linear drive member. A guide groove for driving the toggling rod to move is formed in the guide plate, and one end of the toggling rod away from the fourth linear drive member is located in the guide groove.

[0017] By adopting the above technical solution, the fourth linear drive member can drive the toggling rod to move along the guide groove, thereby realizing the position movement of the isolation screen, enabling the isolation screen to smoothly reach one end away from the water intake pipe, and realizing the sequential filtering operation of multiple isolation screens.

[0018] Optionally, the guide groove includes a force - applying groove aligned with the axis of the isolation screen and a return groove parallel to the force - applying groove. A first connecting groove communicates between one end of the force - applying groove away from the water intake pipe and the return groove; a second connecting groove communicates between one end of the force - applying groove close to the water intake pipe and the return groove. When the fourth linear drive member drives the toggling rod to move away from the water intake pipe, the toggling rod slides in the force - applying groove and reaches the return groove along the first connecting groove; when the fourth linear drive member drives the toggling rod to slide towards the water intake pipe, the toggling rod slides in the return groove and reaches the force - applying groove along the second connecting groove.

[0019] By adopting the above technical solution, when the fourth linear drive member drives the toggling rod to move away from the water intake of the seawater desalination system, the toggling rod slides in the force - applying groove and smoothly transitions to the return groove through the first connecting groove, realizing the smooth pushing of the isolation screen. On the contrary, when the fourth linear drive member drives the toggling rod to slide towards the water intake of the seawater desalination system, the toggling rod slides in the return groove and smoothly transitions to the force - applying groove through the second connecting groove, ensuring the smooth return of the toggling rod. This design not only improves the efficiency of the entire drive system but also reduces mechanical wear and extends the service life of the equipment.

[0020] Optionally, the cleaning bucket is cylindrical. The shielding assembly includes a shielding cylinder slidably connected in the cleaning bucket and a power member for driving the shielding cylinder to slide. An avoidance groove for the end of the drive assembly connecting the isolation screen to be embedded is formed on one side of the shielding cylinder, and a baffle for blocking the avoidance groove is slidably connected in the shielding cylinder.

[0021] By adopting the above technical solution, the shielding cylinder in the shielding assembly is slidably connected in the cleaning bucket, which can close the cleaning port during the cleaning process, prevent impurities from splashing out or water from flowing back during the cleaning process, and ensure the cleanliness of the cleaning environment. The avoidance groove formed on one side of the shielding cylinder can ensure the smooth return of the shielding cylinder and avoid interference with the drive assembly.

[0022] Optionally, the power component includes a rotating cylinder rotatably connected to the cleaning barrel and a rotating motor fixed to the outer wall of the cleaning barrel for driving the rotating cylinder to rotate. A power rod is fixed to the outer wall of the shielding cylinder, and a sliding groove for the power rod to be inserted and slide through is formed through the cleaning barrel. A reciprocating spiral groove is formed on the inner wall of the rotating cylinder, and one end of the power rod is located in the reciprocating spiral groove.

[0023] By adopting the above technical solution, the rotating motor drives the rotating cylinder to rotate. The reciprocating spiral groove on the inner wall of the rotating cylinder cooperates with the power rod, causing the power rod to slide reciprocally along the sliding groove, thereby driving the shielding cylinder to slide reciprocally, realizing the automatic opening and closing of the shielding cylinder, and ensuring the continuity and stability of the cleaning process.

[0024] Optionally, a rotating ring is rotatably connected inside the shielding cylinder, and a brush is fixed to the rotating ring. A cleaning space for the side wall of the isolation screen to be inserted into is formed between the brush and the inner wall of the shielding cylinder.

[0025] By adopting the above technical solution, after the isolation screen enters the cleaning barrel, the side wall of the isolation screen can be effectively cleaned by the brush.

[0026] Optionally, a spiral plate is fixed to the inner wall of the cleaning barrel. The spiral plate is spirally wound around the axis of the cleaning barrel. When the water in the cleaning barrel reaches the spiral plate, the water in the cleaning barrel reaches the brush in a spiral shape, driving the rotating ring to rotate.

[0027] By adopting the above technical solution, the design of the spiral plate enables the water flow in the cleaning barrel to flow along a spiral path. On the basis of enhancing the impact force and fluidity of the water flow, the rotating water flow can also drive the brush to rotate, realizing the cleaning of the inner wall of the isolation screen.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] By connecting the cleaning barrel to the concentrated brine discharge pipe of the seawater desalination system in the present application, the impurities on the isolation screen can be flushed with the existing concentrated brine without the need to separately set up power components. The removed plankton and other impurities can then flow along with the concentrated brine to the open sea, realizing the automatic disposal of the impurities washed off from the isolation screen to a place far from the water intake of the seawater desalination system, reducing the probability of the removed impurities clogging the screen again, eliminating the need for manual treatment of plankton and other impurities, and at the same time reducing the labor intensity of the staff;

[0030] By setting up the isolation screen, the cleaning system and the driving assembly, the function of automatically cleaning the isolation screen is realized, reducing manual intervention, reducing the labor intensity of the staff, and ensuring the water intake quality of the seawater desalination system.

[0031] The setting of multiple isolation screens allows multiple isolation screens to perform filtering work in turn. On the basis of ensuring the filtering quality, it also guarantees the overall service life of the isolation screens, and also realizes the cleaning of the isolation screens without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of this application.

[0033] Figure 2 This is a schematic diagram designed to illustrate the positional relationship among the isolation screen, drive assembly, and cleaning system.

[0034] Figure 3 This is a structural diagram to reflect a set of isolation screen structures.

[0035] Figure 4 This is a structural diagram designed to reflect the structure of the toggle component.

[0036] Figure 5 This is a structural diagram designed to reflect the structure of the cleaning system.

[0037] Figure 6 It is a front view cutaway schematic diagram of the cleaning barrel of the present application.

[0038] Figure 7 yes Figure 6 A magnified schematic diagram of center A.

[0039] Explanation of the reference numerals: 1. water inlet; 11. water inlet pipe; 12. discharge pipe; 13. switch valve; 2. isolation screen; 21. slider; 22. toggle groove; 23. suction plate; 24. first net; 25. second net; 26. third net; 3. cleaning system; 31. cleaning barrel; 311. closing plate; 312. rotating ring; 313. brush; 314. cleaning space; 315. spiral plate; 316. abutment block; 32. water inlet pipe; 33. water outlet pipe; 34. control valve; 35. cleaning port; 36. one-way valve; 4. drive assembly; 41. suction cup; 42. first linear drive member; 43. second linear drive member; 44. third linear drive member; 45. mounting rod; 46. reinforcement Rod; 5, shielding assembly; 51, shielding cylinder; 511, avoidance groove; 512, baffle; 513, installation groove; 514, fixed spring; 52, power part; 521, rotating cylinder; 522, rotating motor; 523, power rod; 524, sliding groove; 525, reciprocating spiral groove; 526, gear; 527, outer gear ring; 6, bracket; 61, support plate; 611, sliding groove; 612, sliding into groove; 613, sliding out groove; 7, toggle assembly; 71, fourth linear drive member; 72, toggle rod; 721, first rod; 722, second rod; 73, guide plate; 74, guide groove; 741, force groove; 742, return groove; 743, first connecting groove; 744, second connecting groove. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1-7 This application is described in further detail.

[0041] At present, the commonly used method for desalinating seawater is reverse osmosis membrane desalination technology, which uses pressure difference to drive desalination and has significant advantages such as small footprint, short construction period, simple operation, high degree of automation, low investment cost, and relatively low energy consumption. However, the recovery rate of seawater desalination process through reverse osmosis membrane is only about 40%-50%, which means that a large amount of concentrated brine will be generated and needs to be discharged to the sea. For this reason, the concentrated brine produced in the desalination process is usually transported from land to the ocean through special discharge pipes, and this process is accompanied by significant gravitational potential energy and kinetic energy. Making full use of this gravitational potential energy and kinetic energy can provide auxiliary energy for other processes and equipment, further improving the energy efficiency and sustainability of the overall system.

[0042] During the process of taking water through a seawater desalination system, the isolation screen installed at the water intake of the seawater desalination system is easily blocked by impurities such as marine plankton. Therefore, the inventors of this application have researched and developed a more efficient automatic cleaning device to prevent the fouling of ultrafiltration membranes caused by marine plankton and their secretions in different seasons, ensure the continuous and stable operation of the seawater desalination reverse osmosis process, and make full use of the gravitational potential energy and kinetic energy generated during the discharge process of concentrated brine. This can not only reduce the labor intensity of the staff but also significantly improve the operation efficiency and stability of the system.

[0043] An embodiment of this application discloses a seawater desalination water intake isolation cleaning device. Refer to Figure 1 , the seawater desalination water intake isolation cleaning device is installed at the water intake 1 of the seawater desalination system and is used to filter the water entering the water intake 1 of the seawater desalination system. A water intake pipe 11 is installed at the water intake 1 of the seawater desalination system; a concentrated brine outlet is also provided on the seawater desalination system. After the water taken from the water intake 1 passes through the filtration of the seawater desalination system, impurities and salts in the water will be filtered out, so that the water after filtering out the impurities is discharged from the raw water outlet, while the remaining water with a higher salt content is discharged from the concentrated brine outlet. A discharge pipe 12 is installed at the concentrated brine outlet, and the discharge pipe 12 extends to the open sea, so that the discharged concentrated brine is discharged to the open sea through the discharge pipe 12.

[0044] Refer to Figure 1 and Figure 2 , the seawater desalination water intake isolation cleaning device includes an isolation screen 2 installed at the water intake pipe 11, a cleaning system 3 for cleaning the isolation screen 2, and a driving component 4 for driving the isolation screen 2 to reach the cleaning system 3. Among them, the cleaning system 3 includes a cleaning barrel 31, a water inlet pipe 32 connected between the cleaning barrel 31 and the discharge pipe 12, and a water outlet pipe 33 connected between the cleaning barrel 31 and the discharge pipe 12. The water inlet pipe 32 and the water outlet pipe 33 are respectively connected to both ends of the cleaning barrel 31, and the water inlet pipe 32 is located at one end of the cleaning barrel 31 close to the seawater desalination system, and a control valve 34 for controlling the on-off of the water inlet pipe 32 is installed on the water inlet pipe 32. So that the passage of the water inlet pipe 32 can be controlled through the control valve 34, so that the concentrated brine in the discharge pipe 12 can reach the cleaning barrel 31 along the water inlet pipe 32 to wash the isolation screen 2 in the cleaning barrel 31, and the marine plankton and plants and animals washed off the isolation screen 2 will reach the discharge pipe 12 along with the concentrated brine through the water outlet pipe 33 and be discharged to the open sea area. There is no need to add additional power components, and the existing power for discharging concentrated brine can be used to realize the flushing of the isolation screen 2 and automatically process the impurities cleaned from the isolation screen 2 away from the water intake 1 of the seawater desalination system, reducing the probability of the cleaned impurities blocking the screen again, and at the same time reducing the labor intensity of the staff for manually cleaning the impurities.

[0045] A cleaning port 35 for the isolation screen 2 to reach the cleaning barrel 31 is provided on the cleaning barrel 31 , and a shielding component 5 for closing the cleaning port 35 is provided on the cleaning barrel 31 .

[0046] Reference Figure 3 and Figure 4 The isolation screen 2 is cylindrical with one end closed. The closed end of the isolation screen 2 abuts against the end of the water intake pipe 11. There are multiple isolation screens 2 connected end to end. This application takes three isolation screens 2 as an example for explanation. A bracket 6 is also provided for supporting the isolation screen 2. The bracket 6 can be fixed on the water intake pipe 11 or fixed at other positions, as long as the relative positions of the bracket 6 and the water intake pipe 11 can be fixed. The isolation screen 2 is slidably connected to the bracket 6, so that the isolation screen 2 close to the water intake pipe 11 is fixed by the bracket 6 and abuts against the water intake 1 of the seawater desalination system, thereby filtering the water entering the water intake pipe 11. Under normal conditions, the water entering the water intake pipe 11 is filtered by three isolation screens 2 that are abutted against each other end to end to ensure the filtering effect. At this time, an isolation screen 2 located far away from the water intake pipe 11 blocks the entry of plankton. When an isolation screen 2 located far away from the water intake pipe 11 is seriously blocked, the driving component 4 can drive an isolation screen 2 far away from the water intake pipe 11 to move into the cleaning bucket 31, so that the isolation screen 2 can be cleaned by the power of the concentrated brine itself. The cleaned isolation screen 2 can be driven by the driving component 4 to be inserted between the remaining isolation screens 2 and the water intake pipe 11. At this time, the remaining isolation screens 2 are moved as a whole to a set position in the direction away from the water intake pipe 11. Therefore, a toggle component 7 is also provided on the bracket 6 for driving the isolation screen 2 near the water intake pipe 11 to move in the direction away from the water intake pipe 11.

[0047] The support 6 includes support plates 61 located at two opposite sides of the isolation screen 2 , and the two sides of the isolation screen 2 are respectively connected to the two support plates 61 so as to fix the position of the isolation screen 2 through the support plates 61 .

[0048] Specifically, sliders 21 with a T-shaped cross section are fixedly connected to the two opposite side walls of the isolation screen 2, and a slide groove 611 for the slider 21 to be inserted and slide is provided on the opposite side of the two support plates 61, and a slide-in groove 612 for the slider 21 to slide into the slide groove 611 is provided at one end of the slide groove 611 close to the water intake pipe 11, and a slide-out groove 613 for the slider 21 to slide out of the slide groove 611 is provided at one end of the slide groove 611 away from the water intake pipe 11. Under normal conditions, the slider 21 is located in the slide groove 611, and the isolation screen 2 abuts against the water intake pipe 11 under the impact force of the water in the water intake pipe 11. When the driving component 4 drives the cleaned isolation screen 2 to reach the remaining isolation screens 2 and the water intake pipe 11, the toggle component 7 will toggle the isolation screen 2 abutting against the water intake pipe 11 to move a set distance away from the water intake pipe 11. At this time, there will be a placement space between the isolation screen 2 and the water intake pipe 11 for the cleaned isolation screen 2 to be placed. Simply place the cleaned isolation screen 2 into the placement space, and slide the slider 21 on the isolation screen 2 from the slide slot 612 to the slide slot 611. At this time, the sliders 21 on the isolation screen 2 at both ends will abut against the two ends of the slide slot 611, so that the isolation screen 2 filters the water entering the water intake pipe 11.

[0049] Reference Figure 3 and Figure 4 The toggle assembly 7 includes a fourth linear drive member 71, a toggle rod 72 hinged at the movable end of the fourth linear drive member 71, and a guide plate 73 fixed to one side of the fourth linear drive member 71. The fourth linear drive member 71 can be a fourth linear motor, the toggle rod 72 is hinged on the slider 21 of the fourth linear motor, and a guide groove 74 for driving the toggle rod 72 to slide is provided on the side of the guide plate 73 facing the isolation screen 2, and the end of the toggle rod 72 away from the fourth linear motor is located in the guide groove 74.

[0050] The toggle rod 72 includes an L-shaped first rod 721 hinged on the fourth linear motor slider 21 and a second rod 722 vertically fixed to the end of the first rod 721 away from the fourth linear motor, one end of the second rod 722 is located in the guide groove 74, and the other end of the second rod 722 is embedded between the isolation screen 2 and the water intake pipe 11 to push the isolation screen 2 to slide. Therefore, a toggle groove 22 for the second rod 722 to be embedded is also provided at the closed end of the isolation screen 2.

[0051] The guide groove 74 includes a force-applying groove 741 that is consistent with the axis of the isolation screen 2 and a return groove 742 that is parallel to the force-applying groove 741. A first connecting groove 743 is connected between the end of the force-applying groove 741 away from the water intake pipe 11 and the return groove 742. The force-applying groove 741 and the first connecting groove 743 are in a circular arc transition. A second connecting groove 744 is connected between the end of the force-applying groove 741 close to the water intake pipe 11 and the return groove 742. The return groove 742 and the second connecting groove 744 are in a circular arc transition. When the fourth linear driving member 71 drives the first rod 721 to move in a direction away from the water intake pipe 11, the second rod 722 slides in the force-applying groove 741 and follows the first connecting groove 743 to the connection between the first connecting groove 743 and the return groove 742; when the fourth linear driving member 71 drives the first rod 721 to slide in a direction close to the water intake pipe 11, the second rod 722 slides in the return groove 742 and follows the second connecting groove 744 to the second connecting groove 744 and the force-applying groove 741. The height of the force-applying groove 741 is lower than the height of the highest point of the isolation screen 2, and the height of the return groove 742 is higher than the height of the highest point of the isolation screen 2, so that when the second rod 722 slides in the force-applying groove 741, the second rod 722 is located in the toggle groove 22 and can drive the isolation screen 2 to move; when the second rod 722 slides in the first connecting groove 743, the second rod 722 will slide out of the toggle groove 22 to release the matching relationship with the isolation screen 2. When the second rod 722 moves in the return groove 742, since the return groove 742 is located on the upper side of the isolation screen 2, it will not interfere with the isolation screen 2; when the second rod 722 slides in the second connecting groove 744, the second rod 722 will gradually contact the isolation screen 2 abutting against the water intake pipe 11 and embed into the toggle groove 22. When the drive assembly 4 drives the cleaned isolation screen 2 to the top of the water intake pipe 11, the slider 21 of the fourth linear motor slides once to open the insertion space. After the cleaned isolation screen 2 is placed in the insertion space, the slider 21 of the fourth linear motor returns to wait for the next cycle. The fourth linear motor only needs to drive the slider 21 to reciprocate once.

[0052] Reference Figure 2 and Figure 4, the driving assembly 4 includes a suction cup 41 for adsorbing the isolation screen 2, a first linear driving member 42 for driving the slider 21 to slide out of the sliding groove 613 through the suction cup 41, a second linear driving member 43 for driving the suction cup 41 to move into the cleaning bucket 31, and a third linear driving member 44 for driving the suction cup 41 to move to the water intake pipe 11. A suction plate 23 for adsorbing with the suction cup 41 is fixedly connected to the side wall of each isolation screen 2. Among them, the third linear driving member 44 can be a third linear motor, and the third linear motor is located on the side of the cleaning bucket 31 away from the bracket 6. The second linear driving member 43 can be a second hydraulic cylinder, and the second hydraulic cylinder can be directly installed on the slider 21 of the third linear motor to drive the second hydraulic cylinder to move through the third linear motor. The first linear driving member 42 can also be a first hydraulic cylinder, the first hydraulic cylinder is vertically fixedly connected to the piston rod of the second hydraulic cylinder, and the suction cup 41 is fixedly connected to the piston rod of the first hydraulic rod. During use, the first hydraulic cylinder can directly drive the suction cup 41 to abut against the suction plate 23 of the isolation screen 2 to realize the adsorption and fixation of the isolation screen 2. Then, control the piston rod of the first hydraulic cylinder to retract, and the isolation screen 2 can be removed from the bracket 6 through the suction cup 41, and the height of the isolation screen 2 is higher than the height of the cleaning bucket 31. Then, control the piston rod of the second hydraulic cylinder to retract, and the isolation screen 2 can be driven to move directly above the cleaning bucket 31. At this time, control the shielding assembly 5 to open the cleaning port 35, and control the piston rod of the first hydraulic cylinder to extend, and the isolation screen 2 can be driven to reach the inside of the cleaning bucket 31 from the cleaning port 35. At this time, the control valve 34 can be controlled to open so that the concentrated brine in the discharge pipe 12 can reach the inside of the cleaning bucket 31 to wash the isolation screen 2 in the cleaning bucket 31, and the cleaning direction of the concentrated brine is opposite to the filtering direction of the isolation screen 2, so that impurities such as plankton on the isolation screen 2 can be washed off smoothly. The washed-off plankton will also reach the discharge pipe 12 together with the concentrated brine through the water outlet pipe 33 and be transported to the open sea through the discharge pipe 12.

[0053] It can be understood that an air extraction pump / water extraction pump and an air release pipe connected to the suction cup 41 are also provided, and an air release valve is installed on the air release pipe. When the suction cup 41 abuts against the suction plate 23, the gas / water between the suction cup 41 and the suction plate 23 can be extracted through the air extraction pump / water extraction pump, so that the suction cup 41 can be firmly adsorbed on the suction plate 23. When the isolation screen 2 is cleaned and placed in the filtering position, the air release valve is operated to open the air release pipe, and the outside water flow can reach between the suction cup 41 and the suction plate 23, releasing the adsorption relationship between the suction cup 41 and the suction plate 23.

[0054] Refer to Figure 5A one-way valve 36 is also installed on the outlet pipe 33 to control the concentrated brine to only reach the discharge pipe 12 from the cleaning bucket 31 along the outlet pipe 33, and prevent the water in the discharge pipe 12 from reaching the cleaning bucket 31 from the outlet pipe 33, thereby ensuring the cleaning of the isolation screen 2.

[0055] The cleaned isolation screen 2 will be pulled out from the cleaning port 35 by the first hydraulic cylinder, and then the third linear motor will drive the isolation screen 2 to move toward the water intake pipe 11, so that the cleaned isolation screen 2 can reach the placement space, and then the isolation screen 2 will be driven by the second hydraulic cylinder to move to the top of the placement space. At this time, the remaining isolation screens 2 will be moved away from the seawater desalination system by the toggle component 7 to vacate the placement space. At this time, the piston rod of the first hydraulic cylinder extends to place the cleaned isolation screen 2 into the placement space, and the toggle component 7 returns to achieve the cleaning of the isolation screen 2.

[0056] It is understandable that a mounting rod 45 may be fixedly connected to the slider 21 of the third linear motor, the second hydraulic cylinder may be fixedly connected to the mounting rod 45, and a reinforcing rod 46 may be fixedly connected between the second hydraulic cylinder and the mounting rod 45 to increase the supporting strength of the second hydraulic cylinder.

[0057] Reference Figure 5 and Figure 6 The cleaning barrel 31 is cylindrical, and the shielding assembly 5 includes a shielding barrel 51 slidably connected to the cleaning barrel 31 and a power piece 52 for driving the shielding barrel 51 to slide. A avoidance groove 511 for the first hydraulic cylinder piston rod to be embedded in one side of the shielding barrel 51 is provided, so that when the first hydraulic cylinder piston rod drives the isolation screen 2 to extend into the cleaning barrel 31, the shielding barrel 51 can close the cleaning port 35 again, reducing the connection between the cleaning barrel 31 and the outside through the cleaning port 35, and reducing the pressure in the cleaning barrel 31 so that the flushing force of the isolation screen 2 is insufficient. When the shielding barrel 51 closes the cleaning port 35, the shielding barrel 51 can close the cleaning port 35 again. At this time, the first hydraulic cylinder piston rod used to connect with the isolation screen 2 will be embedded in the avoidance groove 511, reducing the interference between the first hydraulic cylinder piston rod and the shielding barrel 51. At the same time, in order to ensure that the shielding tube 51 can smoothly block the cleaning port 35 when the isolation screen 2 is taken out from the cleaning barrel 31 , a baffle 512 for blocking the avoidance groove 511 is slidably connected in the shielding tube 51 .

[0058] Reference Figure 6 and Figure 7, specifically, an installation groove 513 is formed at the bottom of the avoidance groove 511. The baffle 512 is slidably connected in the installation groove 513, and a fixing spring 514 is fixedly connected between the bottom of the installation groove 513 and the baffle 512. Under normal conditions, under the elastic force of the fixing spring 514, the baffle 512 extends out of the installation groove 513 and is located in the avoidance groove 511 to block the avoidance groove 511, so that the shielding cylinder 51 is a complete cylinder to close the cleaning port 35. When the isolation screen 2 is located in the cleaning barrel 31, when the shielding cylinder 51 closes the cleaning port 35, the end of the baffle 512 away from the fixing spring 514 will abut against the piston rod of the first hydraulic cylinder. Under the thrust of the piston rod of the first hydraulic cylinder, the baffle 512 compresses the fixing spring 514 and retracts into the installation groove 513.

[0059] It can be understood that the concentrated brine in the cleaning barrel 31 may flow out from the avoidance groove 511 on the side of the piston rod of the first hydraulic cylinder away from the baffle 512. Since the amount of the outflow is small, it can be ignored. Of course, it can also be set that after the first linear driving member 42 drives the isolation screen 2 to be located in the cleaning barrel 31, the third linear driving member 44 is started at this time, so that the third linear driving member drives the isolation screen 2 to move along the axis of the cleaning barrel 31, so that the side of the piston rod of the first hydraulic cylinder away from the baffle 512 abuts against the cleaning port 35. At this time, the probability of the concentrated brine in the cleaning barrel 31 flowing out can be reduced. Of course, a sealing ring can also be fixedly connected to the outer wall of the piston rod of the first hydraulic cylinder to make the seal at the avoidance groove 511 more tight.

[0060] Among them, in order to ensure the sealing of the cleaning port 35 by the shielding cylinder 51, a closing plate 311 is fixedly connected to the inner wall of the cleaning barrel 31. The closing plate 311 is annular and is located on one side of the cleaning port 35. When the shielding cylinder 51 seals the cleaning port 35, the end of the shielding cylinder 51 provided with the avoidance groove 511 will abut against the closing plate 311 to make the sealing of the cleaning port 35 more tight.

[0061] Refer to Figure 6 and Figure 7, the power component 52 includes a rotating cylinder 521 rotatably connected to the cleaning barrel 31 and a rotating motor 522 fixedly connected to the outer wall of the cleaning barrel 31 for driving the rotating cylinder 521 to rotate. Among them, a power rod 523 is fixedly connected to the outer wall of the shielding cylinder 51, and a sliding groove 524 for the power rod 523 to be inserted and slide through the inner and outer walls of the cleaning barrel 31 is provided. The length direction of the sliding groove 524 is consistent with the axis direction of the cleaning barrel 31, and a reciprocating spiral groove 525 is provided on the inner wall of the rotating cylinder 521, and one end of the power rod 523 is located in the reciprocating spiral groove 525. When the rotating motor 522 is started, the rotating motor 522 will drive the rotating cylinder 521 to rotate. Due to the cooperation between the power rod 523 and the sliding groove 524, the rotation of the shielding cylinder 51 is restricted, so that the power rod 523 slides in the reciprocating spiral groove 525, and the sliding groove 524 can guide the power rod 523, so that the shielding cylinder 51 slides along the length direction of the sliding groove 524. The setting of the reciprocating spiral groove 525 enables the rotating motor 522 to drive the shielding cylinder 51 to slide reciprocally, so that after the shielding cylinder 51 opens the cleaning port 35, it can reset and close the cleaning port 35 again.

[0062] Among them, a gear 526 is fixedly connected to the output shaft of the rotating motor, and an external gear ring 527 meshing with the gear 526 is fixedly connected to the outer wall of the rotating cylinder 521. Through the meshing of the gear 526 and the external gear ring 527, the rotating motor drives the rotating cylinder 521 to rotate.

[0063] Refer to Figure 6 and Figure 7 , a rotating ring 312 is also rotatably connected in the shielding cylinder 51, and a brush 313 is fixedly connected to the rotating ring 312. A plurality of brushes 313 are fixedly connected at intervals around the axis of the rotating ring 312. A cleaning space 314 for the side wall of the isolation screen 2 to be inserted is formed between the outer walls of the plurality of brushes 313 and the inner wall of the shielding cylinder 51. And the length direction of the brush 313 is inclined with respect to the axis of the cleaning barrel 31, so that after the isolation screen 2 is placed in the cleaning barrel 31, when the power component 52 drives the shielding cylinder 51 to close the cleaning port, the isolation screen 2 is also located in the cleaning space 314 between the shielding cylinder 51 and the brush 313. When the concentrated brine enters the cleaning barrel 31, the concentrated brine will impact on the side wall of the brush 313 to drive the brush 313 to rotate around the axis of the cleaning barrel 31, so that the brush 313 cleans the inner wall of the isolation screen 2.

[0064] At the same time, in order to increase the force of the brush 313 during rotation, a spiral plate 315 is fixedly connected to the inner wall of the cleaning barrel 31, so that after the concentrated brine reaches the cleaning barrel 31, it will flow in a rotating direction along the spiral direction of the spiral plate 315; wherein, the spiral direction of the spiral plate 315 is opposite to the inclination direction of the brush 313, so that the rotating flowing water flow can smoothly impact the side wall of the brush 313 to drive the brush 313 to rotate smoothly, thereby realizing the brush 313 being driven to rotate around the axis of the cleaning barrel 31 by the force of the water flow.

[0065] Among them, in order to ensure the firmness of the fixation between the suction cup 41 and the isolation screen 2 when the isolation screen 2 is flushed by concentrated brine, an abutment block 316 is fixed to the inner wall of the shielding cylinder 51, and two abutment blocks 316 are provided, which are respectively located on the opposite sides of the shielding cylinder 51. The abutment block 316 is located on the side of the rotating ring 312 facing the closing plate 311, and the cleaning space 314 is located on the side of the abutment block 316 facing the closing plate 311, so that when the shielding cylinder 51 abuts on the closing plate 311, the isolation screen 2 also abuts on the abutment block 316 to increase the force of the isolation screen 2 to resist the impact of concentrated brine.

[0066] It can be understood that in order to facilitate timely cleaning of the isolation screen 2, a pressure sensor for detecting the degree of blockage of the isolation screen 2 is also provided, so that the degree of blockage at the isolation screen 2 can be detected by the pressure sensor, and when the blockage of the isolation screen 2 reaches a set value, the drive component 4 is controlled to move and clean the isolation screen 2.

[0067] Among them, when the insertion space is opened by the toggle component 7 so that the drive component 4 can put the cleaned isolation screen 2 into the insertion space, if the water intake pipe 11 is in the water intake state at this time, impurities such as suspended organisms in the sea will enter the water intake pipe 11 from the insertion space, affecting the water intake quality. Therefore, two water intake pipes 11 can be provided, and one end of the two water intake pipes 11 is connected and connected to the water intake 1 of the seawater desalination system. Two sets of isolation screens 2 are provided, and the two sets of isolation screens 2 are respectively arranged at one end of the two water intake pipes 11 away from the seawater desalination system, and the drive components 4 are arranged on the opposite sides of the two sets of isolation screens 2, and the cleaning system 3 is located between the two sets of isolation screens 2, so that the cleaning work of the two sets of isolation screens 2 can be realized by the same cleaning system 3. At the same time, a switch valve 13 is installed on each water intake pipe 11. When the insertion space at one of the water intake pipes 11 needs to be opened to allow the cleaned isolation screen 2 to be inserted, the water intake pipe 11 at the isolation screen 2 can be closed by the switch valve 13 to draw water from the seawater desalination system through another water intake pipe 11, so that water can be taken without stopping the system and the water quality can be guaranteed.

[0068] It is understandable that, in order to prevent seawater from directly reaching the intake pipe 11 from the side wall of the isolation screen 2 near the intake pipe 11, which may cause blockage on the outer wall of the isolation screen 2. An isolation cylinder can also be fixedly connected between the two support plates 61, and the isolation screen 2 is slidably connected inside the isolation cylinder, so that the seawater in the sea can only reach the intake pipe 11 after passing through multiple isolation screens 2 in sequence from the inside of the isolation screen 2 far from the intake pipe 11. And in order to ensure that the cleaned isolation screen 2 can smoothly reach the placement space, the isolation cylinder is a telescopic cylinder, including a first cylinder fixedly connected to the support plate 61, a second cylinder slidably connected to one end of the first cylinder, and a third cylinder slidably connected to the other end of the first cylinder. The first cylinder and the second cylinder, as well as the first cylinder and the third cylinder, are connected by hydraulic cylinders. When it is necessary to take out one isolation screen 2 far from the intake pipe 11 for cleaning, the hydraulic cylinder can drive the third cylinder to slide towards the first cylinder, so that one isolation screen 2 far from the intake pipe 11 can be smoothly taken out. After the isolation screen 2 is taken out, the piston rod of the hydraulic cylinder extends to drive the third cylinder to reset, and the position of the isolation screen 2 is closed again; when it is necessary to place the cleaned isolation screen 2 into the placement space, the piston rod of the hydraulic cylinder contracts to drive the second cylinder to slide towards the first cylinder, opening the placement space to facilitate the placement of the cleaned isolation screen 2. After the placement is completed, the piston rod of the hydraulic cylinder extends to drive the second cylinder to approach the end wall of the intake pipe 11, so that the second cylinder abuts against the end wall of the intake pipe 11 to seal the placement space. Of course, in order to prevent seawater from directly reaching the intake pipe 11 from the side wall of the isolation screen 2 near the intake pipe 11, which may cause blockage on the outer wall of the isolation screen 2. The side wall of the isolation screen 2 can also be set as a cylindrical shape without mesh holes, so that only the closed end of the isolation screen 2 is mesh-shaped. At this time, it is not necessary to set the suction plate 23 to make the suction cup 41 smoothly adsorb the isolation screen 2.

[0069] The implementation principle of a desalination water intake isolation and cleaning device in an embodiment of the present application is as follows: Under normal circumstances, water can be taken from the desalination system through one water intake pipe 11, or through two water intake pipes 11. When one of the isolation screens 2 is blocked, the isolation screen 2 is moved to the top of the corresponding cleaning barrel 31 through the corresponding drive assembly 4, and the cleaning port 35 is driven to open through the power combination, and then the isolation screen 2 to be cleaned is placed in the cleaning barrel 31, and then the shielding cylinder 51 is driven by the power member 52 to block the cleaning port 35. By opening the control valve 34, the concentrated brine in the discharge pipe 12 can reach the cleaning barrel 31 along the water inlet pipe 32. The concentrated brine in the cleaning barrel 31 will generate a rotating force due to the setting of the spiral plate 315, and drive the brush 313 to rotate to clean the side wall of the isolation screen 2. After cleaning is completed, the operating control valve 34 is closed, and the power member 52 drives the shielding cylinder 51 to move, so that the cleaning port 35 can be opened, and the driving component 4 can drive the cleaned isolation screen 2 to slide out of the cleaning port 35. Then the power member 52 controls the shielding cylinder 51 to close the cleaning port 35, and the corresponding switch valve 13 on the water intake pipe 11 controls the water intake pipe 11 to close, and then the toggle rod 72 pushes the isolation screen 2 abutting on the water intake pipe 11 to move away from the water intake pipe 11 to open the placement space, and the drive component 4 drives the cleaned isolation screen 2 to be placed in the placement space, and the cleaning and placement of the isolation screen 2 can be completed. Finally, the switch valve 13 at the water intake pipe 11 is controlled to open. The impurities such as plankton that clog the isolation screen 2 follow the concentrated brine to the discharge pipe 12 and are discharged to the offshore area, and there is no need to manually handle the cleaned impurities. At the same time, the existing force of discharging concentrated brine is used to clean the impurities of the isolation screen 2, so that there is no need to add additional power to clean the isolation screen 2, and the operation is more labor-saving. On the basis of reducing the probability of the cleaned impurities clogging the screen again, it can also achieve unattended operation and maintain the continuity of water inlet.

[0070] Of course, after cleaning the isolation screen 2, the cleaned isolation screen 2 can be placed between the remaining isolation screen 2 and the water intake pipe 11. The cleaned isolation screen 2 can also be put back to its original position, that is, the isolation screen 2 is placed at the end away from the water intake pipe 11. Figure 3For example, there are 3 isolation screens 2. From the end close to the water intake pipe 11 to the end far from the water intake pipe 11, the 3 isolation screens 2 are successively called the first screen 24, the second screen 25 and the third screen 26. When the third screen 26 is blocked, the third screen 26 is directly placed in the cleaning bucket 31 for cleaning, and impurities are filtered through the second screen 25 during the cleaning process. After the third screen 26 is cleaned, the third screen 26 is put back to its original position, and at this time, impurities are filtered through the third screen 26 again. The cycle continues until the blockage of the second screen 25 reaches the set value. Then, the second screen 25 is moved to the cleaning bucket 31 for cleaning by the driving assembly 4. At this time, the third screen 26 will abut against the first screen 24 under the impact of water, and then the cleaned second screen 25 can be placed at the position of the third screen 26. It can be understood that before cleaning the second screen 25, the third screen 26 can be cleaned first, and then the second screen 25 can be cleaned, so that the third screen 26 that abuts against the first screen 24 under the impact of water is in a clean state. Through the alternation of the second screen 25 and the third screen 26, the filtration of the water intake pipe 11 can be realized without stopping the machine, and there is no need to set two water intake pipes 11 and two sets of isolation screens 2, making the equipment simpler and the cost lower.

[0071] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A seawater desalination water intake isolation and cleaning device is installed at the water intake (1) of the seawater desalination system. A water intake pipe (11) is installed at the water intake (1) of the seawater desalination system, and a concentrated brine outlet is provided on the seawater desalination system. A discharge pipe (12) for discharging the concentrated brine to a place far from the water intake (1) is installed at the concentrated brine outlet, and it is characterized in that: It includes an isolation screen (2) installed at the end of the water intake pipe (11), a cleaning system (3) for cleaning the isolation screen (2), and a driving assembly (4) for driving the isolation screen (2) to reach the cleaning system (3). The cleaning system (3) includes a cleaning bucket (31), a water inlet pipe (32) connected between the cleaning bucket (31) and the discharge pipe (12), and a water outlet pipe (33) connected between the cleaning bucket (31) and the discharge pipe (12). A cleaning opening (35) through which the isolation screen (2) reaches into the cleaning bucket (31) is formed in the cleaning bucket (31), and a shielding assembly (5) for closing the cleaning opening (35) is provided on the cleaning bucket (31); The isolation screen (2) is in the shape of a cylinder with one end closed. The closed end of the isolation screen (2) abuts against the water intake (1) of the seawater desalination system. A plurality of the isolation screens (2) are arranged end to end. A support (6) for supporting the isolation screen (2) is also provided. The isolation screen (2) is slidably connected to the support (6). The driving assembly (4) is used to drive one of the isolation screens (2) away from the water intake pipe (11) to move into the cleaning bucket (31) and drive the cleaned isolation screen (2) to move onto the support (6); the cleaned isolation screen (2) is driven by the driving assembly (4) to be inserted between the remaining isolation screens (2) and the water intake pipe (11), and the remaining isolation screens (2) as a whole move in a direction away from the water intake pipe (11); The support (6) is provided with a toggle assembly (7) for driving the isolation screen (2) near the water intake pipe (11) to move in a direction away from the water intake pipe (11); when the toggle assembly (7) toggle the isolation screen (2) abutting against the water intake pipe (11) to move in a direction away from the water intake pipe (11) by a set distance, a placement space for the cleaned isolation screen (2) to be placed is reserved between the isolation screen (2) and the water intake pipe (11); the toggle assembly (7) comprises a fourth linear drive member (71) fixedly connected to the support (6), a toggle rod (72) hingedly connected to the movable end of the fourth linear drive member (71), and a guide plate (73) fixedly connected to one side of the fourth linear drive member (71); the toggle rod (72) comprises A first rod (721) in an L-shape as a whole is hinged on the fourth linear motor slider (21), and a second rod (722) is vertically fixed to the first rod (721) at one end away from the fourth linear motor, one end of the second rod (722) is located in the guide groove (74), and the other end of the second rod (722) is embedded between the isolation screen (2) and the water intake pipe (11) to push the isolation screen (2) to slide; a toggle groove (22) for the second rod (722) to be embedded is also provided at the closed end of the isolation screen (2); a guide groove (74) for driving the toggle rod (72) to move is provided on the guide plate (73), and the end of the toggle rod (72) away from the fourth linear drive member (71) is located in the guide groove (74); The guide groove (74) comprises a force-applying groove (741) which is consistent with the axis of the isolation screen (2) and a return groove (742) which is parallel to the force-applying groove (741); a first connecting groove (743) is connected between the end of the force-applying groove (741) which is away from the water intake pipe (11) and the return groove (742); a second connecting groove (744) is connected between the end of the force-applying groove (741) which is close to the water intake pipe (11) and the return groove (742); when the fourth linear drive member (71) drives the toggle rod (72) to move in a direction away from the water intake pipe (11), , the toggle rod (72) slides in the force-applying groove (741) and reaches the return groove (742) along the first connecting groove (743); when the fourth linear drive member (71) drives the toggle rod (72) to slide in a direction close to the water intake pipe (11), the toggle rod (72) slides in the return groove (742) and reaches the force-applying groove (741) along the second connecting groove (744); the height of the force-applying groove (741) is lower than the height of the highest point of the isolation screen (2), and the height of the return groove (742) is higher than the height of the highest point of the isolation screen (2); The cleaned isolation screen (2) reaches the top of the placement space, and the remaining isolation screens (2) are moved away from the seawater desalination system by the toggle assembly (7) to free up the placement space. The cleaned isolation screen (2) is then placed into the placement space, and the toggle assembly (7) is returned.

2. The seawater desalination water intake isolation and cleaning device according to claim 1, characterized in that: On opposite side walls of the isolation screen (2), there are fixedly connected sliders (21) with a T-shaped cross-section. The bracket (6) includes support plates (61) located on opposite sides of the isolation screen (2). On one side of the two support plates (61) facing each other, there are provided sliding grooves (611) for the sliders (21) to be inserted and slide. At one end of the sliding groove (611) close to the water intake pipe (11), there is provided a sliding-in groove (612) for the slider (21) to slide into the sliding groove (611). At one end of the sliding groove (611) away from the water intake pipe (11), there is provided a sliding-out groove (613) for the slider (21) to slide out of the sliding groove (611).

3. The seawater desalination water intake isolation and cleaning device according to claim 2, characterized in that: The driving assembly (4) includes a suction cup (41) for adsorbing the isolation screen (2), a first linear driving member (42) for driving the slider (21) to slide out of the sliding-out groove (613) through the suction cup (41), a second linear driving member (43) for driving the suction cup (41) to move into the cleaning bucket (31), and a third linear driving member (44) for driving the suction cup (41) to move to the position of the water intake pipe (11). On the side wall of each isolation screen (2), there is fixedly connected a suction plate (23) for adsorbing with the suction cup (41).

4. The seawater desalination water intake isolation and cleaning device according to claim 1, characterized in that: The cleaning bucket (31) is cylindrical. The shielding assembly (5) includes a shielding cylinder (51) slidably connected in the cleaning bucket (31) and a power member (52) for driving the shielding cylinder (51) to slide. On one side of the shielding cylinder (51), there is provided an avoidance groove (511) for one end of the driving assembly (4) connecting the isolation screen (2) to be inserted. Inside the shielding cylinder (51), there is a baffle plate (512) slidably connected for blocking the avoidance groove (511).

5. The seawater desalination water intake isolation and cleaning device according to claim 4, characterized in that: The power member (52) includes a rotating cylinder (521) rotatably connected to the cleaning bucket (31) and a rotating motor (522) fixedly connected to the outer wall of the cleaning bucket (31) for driving the rotating cylinder (521) to rotate. On the outer wall of the shielding cylinder (51), there is fixedly connected a power rod (523). There is provided a sliding groove (524) through the cleaning bucket (31) for the power rod (523) to be inserted and slide. On the inner wall of the rotating cylinder (521), there is provided a reciprocating spiral groove (525), and one end of the power rod (523) is located in the reciprocating spiral groove (525).

6. The seawater desalination water intake isolation and cleaning device according to claim 4, characterized in that: Inside the shielding cylinder (51), there is a rotating ring (312) rotatably connected. On the rotating ring (312), there is fixedly connected a brush (313). A cleaning space (314) is formed between the brush (313) and the inner wall of the shielding cylinder (51) for the side wall of the isolation screen (2) to be inserted.

7. The seawater desalination water intake isolation and cleaning device according to claim 6, characterized in that: On the inner wall of the cleaning bucket (31), there is fixedly connected a spiral plate (315). The spiral plate (315) is spirally wound around the axis of the cleaning bucket (31). When the water in the cleaning bucket (31) reaches the spiral plate (315), the water in the cleaning bucket (31) reaches the brush (313) in a spiral shape to drive the rotating ring (312) to rotate.

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