A desalination water isolation screen driven by osmotic pressure battery

Abstract

The present application relates to the field of seawater desalination technology, and specifically discloses a seawater desalination water intake isolation screen driven by an osmotic pressure battery, including a delivery pipe and an isolation device body. The delivery pipe includes a main pipe and two branch pipes at one end thereof, and a control valve is provided on the branch pipe; the isolation device body is provided with two for filtering the water inflow of the two branch pipes. The isolation device body includes: a filter assembly, including an isolation screen and a collection cylinder, the isolation screen is a cylindrical structure with an open end, the open end abuts against the end of the branch pipe, the collection cylinder is a cylindrical structure with a closed end, which is sleeved on the isolation screen to form a collection space with the isolation screen; a mounting frame is used to support the filter assembly; the mounting rod is rotatably connected to the mounting frame, and the two filter assemblies are respectively located at both ends of the mounting rod; the driving assembly drives the mounting rod to rotate; and the collection box collects impurities in the collection space. The present application can realize the cleaning of the isolation screen without stopping the machine, reduce labor costs, and ensure the working efficiency of the seawater desalination system.

Description

Technical Field

[0001] The present application relates to the field of seawater desalination, and in particular to a seawater desalination water intake isolation screen driven by an osmotic pressure battery. Background Art

[0002] As the global water shortage problem becomes increasingly serious, seawater desalination has been widely used around the world in recent years as an effective means to alleviate the shortage of freshwater resources. The seawater desalination system mainly includes pretreatment unit, reverse osmosis unit and post-treatment unit.

[0003] During the operation of the seawater desalination system, marine phytoplankton outbreaks often occur in the water intake area, especially in summer, when outbreaks of phytoplankton such as Enteromorpha and jellyfish are particularly frequent. These phytoplankton can easily enter the seawater desalination system with a shallow water intake depth, increasing the operating pressure of pretreatment units such as flotation devices, sand filtration devices, and ultrafiltration devices (organic ultrafiltration membranes, ceramic membranes). In order to ensure the stable operation of the seawater desalination system, an isolation screen is generally installed at the water intake of the seawater desalination system. The isolation screen can effectively filter and screen these phytoplankton, thereby ensuring the stable operation of the seawater desalination system.

[0004] Existing desalination systems usually use two types of isolation screens: fixed screens and rotary screens. Although fixed screens can achieve preliminary filtration, they have obvious defects, such as being easily clogged by impurities and requiring frequent manual inspection and cleaning. Rotary screens solve this problem to a certain extent by preventing the screen from being clogged by rotating in the vertical direction, but their degree of automation is limited and manual intervention is still required to ensure the cleaning effect. When cleaning the above two types of screens, it is necessary to control the desalination system to shut down, which affects the working efficiency of the desalination system. Summary of the invention

[0005] In order to achieve cleaning of the isolation screen without stopping the system, reduce labor costs, and ensure the working efficiency of the seawater desalination system, the present application provides a seawater desalination water intake isolation screen driven by an osmotic pressure battery.

[0006] The present application provides a desalination water isolation screen driven by an osmotic pressure battery, which adopts the following technical solution:

[0007] A desalination water intake isolation screen driven by an osmotic pressure battery, comprising: a delivery pipe for delivering water to a desalination system and an isolation device body for preventing impurities in the water from reaching the delivery pipe, the delivery pipe comprising a main pipe and two branch pipes fixedly connected to one end of the main pipe, each branch pipe being equipped with a control valve, two isolation device bodies being provided, the two isolation device bodies being respectively used for blocking and filtering one end of the two branch pipes away from the main pipe, the isolation device body comprising:

[0008] A filter assembly is arranged at the end of the branch pipe and is used to filter and collect impurities entering the branch pipe; the filter assembly includes an isolation screen and a collection cylinder;

[0009] The isolation screen is in the shape of a cylinder with one end open, and the open end of the isolation screen abuts against the end of the branch pipe to filter impurities entering the branch pipe;

[0010] The collecting cylinder is in the shape of a cylinder with one end closed, and is sleeved on the isolation screen. The opening end of the isolation screen and the opening end of the collecting cylinder are opposite to each other, and a collecting space for collecting impurities is formed between the collecting cylinder and the outer wall of the isolation screen;

[0011] A mounting frame, used to support the filter assembly;

[0012] A mounting rod, the middle part of which is rotatably connected to the mounting frame, at least two filter assemblies are provided, and at least two filter assemblies are mounted at both ends of the mounting rod;

[0013] A driving assembly, fixedly connected to the mounting frame, and used to drive the mounting rod to rotate;

[0014] A collecting box is mounted on the mounting frame and has a feed port on the top for collecting impurities collected in the collecting space;

[0015] The energy storage component is used to provide power to the isolation device body to ensure the normal operation of the isolation device body.

[0016] By adopting the above technical solution, the two branch pipes are set up so that when the filter assembly at one of the branch pipes is blocked, the branch pipe can be controlled to stop, and then the driving assembly drives the installation rod to rotate, so that the filter assembly at the branch pipe is rotated to the collection box to collect the impurities on the filter assembly, and the other filter assembly will reach the branch pipe, and the branch pipe can be directly controlled to start. And when the filter assembly at the branch pipe is replaced, water can also be introduced through another branch pipe to replace the screen without stopping the machine, ensuring that the desalination system has a higher working efficiency. At the same time, it is convenient for the automatic collection and cleaning of impurities, thereby reducing labor costs and ensuring the stable operation of the desalination system.

[0017] Optionally, when the isolation screen is located at the branch pipe, it is called the working position; when the mounting rod drives the isolation screen to be located on the upper side of the collecting box, it is called the unloading position; the collecting cylinder is rotatably connected to the mounting rod; a driving motor is fixedly connected to the mounting rod for driving the filter assembly to rotate so that the collection space opening faces downward; when the collection space opening faces downward, the collection space opening is opposite to the feed port of the collection box.

[0018] By adopting the above technical solution, when the filter screen is located at the branch pipe, it is called the working position. At this time, the isolation screen filters and collects impurities entering the branch pipe; when the installation rod drives the filter screen to be located on the upper side of the collection box, it is called the unloading position. The driving motor on the installation rod drives the filter assembly to rotate, so that the collection space opening faces downward and is aligned with the feed port of the collection box, so that impurities can automatically fall into the collection box and realize automatic cleaning.

[0019] Optionally, the isolation screen includes a mesh cylinder and a sealing plate slidably connected to the mesh cylinder, the collecting cylinder is sleeved on the mesh cylinder and slidably cooperates with the mesh cylinder, and a cleaning cylinder is fixedly connected to the collecting box for driving the sealing plate to slide in the mesh cylinder. When the cleaning cylinder drives the sealing plate to slide to the extreme position and continues to apply force, the mesh cylinder slides in the collecting cylinder.

[0020] By adopting the above technical solution, when the cleaning cylinder drives the sealing plate to slide to the extreme position and continues to apply force, the mesh cylinder slides in the collecting cylinder to realize automatic cleaning and collection of impurities, effectively avoiding clogging of the screen, reducing manual maintenance costs, and ensuring the stable operation of the seawater desalination system.

[0021] Optionally, a convex ridge is fixedly connected to the outer wall of the net cylinder, and a groove for the convex ridge to be embedded in is provided on the collecting cylinder. Two convex ridges are provided, and the two convex ridges are respectively located at two ends of the net cylinder.

[0022] By adopting the above technical solution, the ridges fixed on the outer wall of the mesh cylinder can be embedded in the grooves on the collecting cylinder, ensuring the stable sliding of the mesh cylinder in the collecting cylinder, avoiding relative misalignment between the mesh cylinder and the collecting cylinder during impurity filtering, and improving the structural stability and reliability of the filtering assembly.

[0023] Optionally, sliding grooves are provided on two opposite inner walls of the net cylinder, sliding plates are fixedly connected on two opposite sides of the sealing plate, the two sliding plates are respectively slidably connected in the two sliding grooves, a clamping spring is installed in each sliding groove, and the clamping spring is fixed between one end of the sliding groove away from the opening of the collection space and the sliding plate.

[0024] By adopting the above-mentioned technical scheme, the sliding grooves opened on the two opposite inner walls of the net cylinder cooperate with the sliding plates fixed on both sides of the sealing plate, so that the sealing plate can slide smoothly in the net cylinder. At the same time, the locking spring installed in the sliding groove can provide a constant elastic force when the sealing plate slides, ensuring the smooth reset of the sealing plate, thereby improving the reliability and efficiency of the cleaning process.

[0025] Optionally, a push plate for pushing out impurities in the collecting cylinder is slidably connected inside the collecting cylinder, the push plate is sleeved on the mesh cylinder, and a driving component is provided between the push plate and the sealing plate for driving the push plate to slide through the sliding of the sealing plate.

[0026] By adopting the above technical solution, the push plate slidably connected in the collection tube can slide synchronously when the sealing plate slides, so as to push out the impurities in the collection tube, thereby improving the efficiency and effect of impurity cleaning, reducing manual maintenance costs, and ensuring the stable operation of the seawater desalination system.

[0027] Optionally, the driving assembly includes a pull rope fixedly connected to the side of the sealing plate toward the clamping spring and a force spring fixedly connected between the closed end of the collecting tube and the push plate. One end of the pull rope away from the sealing plate is passed through the closed end of the collecting tube and the net tube for installing one end of the clamping spring and then fixed to the push plate. When the sealing plate slides in the net tube, the sealing plate slides in the collecting tube under the action of the force spring.

[0028] By adopting the above technical solution, when the blocking plate slides in the mesh cylinder, the blocking plate drives the push plate to slide in the collecting cylinder through the pull rope, thereby effectively pushing out the impurities in the collecting cylinder, improving the efficiency and effect of impurity cleaning, and ensuring the stable operation of the seawater desalination water intake isolation screen driven by the osmotic pressure battery.

[0029] Optionally, a baffle for blocking the feed port is provided in the collection box, and the baffle is rotatably connected to the collection box. The baffle can be rotated to block or open the feed port, and a rotating motor is fixed to the collection box to drive the baffle to rotate.

[0030] By adopting the above technical solution, a collection box provided with a baffle and a rotating motor can automatically block or open the feed port, so that when the filter assembly has not rotated to the unloading position, the baffle can block the feed port to prevent leakage of impurities; when the filter assembly rotates to the unloading position, the baffle can open the feed port to ensure that impurities can accurately enter the collection box, thereby improving collection efficiency and reducing environmental pollution.

[0031] Optionally, the mounting rod includes a fixed rod rotatably connected to the mounting frame and sliding rods slidably connected to both ends of the fixed rod. An adjusting cylinder is provided between the fixed rod and each of the sliding rods for driving the sliding rod to slide so as to adjust the length of the mounting rod. When the filter assembly is rotated so that the collection space opening faces downward, the adjusting cylinder can bring the collection space opening into contact with the feed port of the collection box.

[0032] By adopting the above technical solution, the mounting rod includes a fixed rod and a sliding rod. The adjusting cylinder arranged between the fixed rod and the sliding rod can adjust the length of the mounting rod, so that the filter assembly can be smoothly rotated until the collection space opening faces downward and the collection space opening is located directly above the feed port of the collection box; then the collection tube is controlled to descend so that the collection space can be accurately abutted against the feed port of the collection box, thereby avoiding jamming during the rotation of the filter assembly.

[0033] Optionally, a contact switch is fixedly connected to the outer wall of the collection box. When the collection space opening of the filter assembly abuts against the feed port of the collection box, the filter assembly abuts against the contact switch, and the contact switch controls the rotating motor to drive the baffle to rotate until the feed port is opened.

[0034] By adopting the above technical solution, when the collection space opening of the filter component abuts against the feed port of the collection box, the filter component abuts against the touch switch, triggering the contact switch to control the rotating motor to drive the baffle to rotate, thereby opening the feed port, realizing automatic cleaning and collection of impurities, improving cleaning efficiency, and reducing labor costs.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] The present application sets two branch pipes to supply water to the main pipe at the same time, and sets two filter components for filtering each branch pipe, so that when one of the branch pipes is blocked, water can be supplied to the main pipe through the other branch pipe, and the filter component can also be automatically replaced and cleaned for the blocked branch pipe. The entire replacement and cleaning process does not require shutdown, and the isolation screen is automatically cleaned, reducing labor costs and ensuring the working efficiency of the seawater desalination system.

[0037] The present application sets a blocking plate and a mesh cylinder to slide in cooperation, and a collecting cylinder and a mesh cylinder to slide in cooperation, so that when the blocking plate is operated to move, the mesh cylinder can be cleaned by scraping the mesh surface by the blocking plate and the elastic potential energy generated by the spring when it is released to vibrate the screen, and at the same time, impurities in the collecting cylinder can be cleaned without setting up a separate cleaning device, which makes cleaning more convenient and less costly.

[0038] The contact switch is set so that when there is no need to pour the impurities in the collection barrel into the collection box, the baffle can automatically block the feed port to prevent the impurities from reaching the sea again from the collection box; and when the collection barrel abuts against the collection box and the impurities need to be poured out, the baffle can also automatically unscrew to open the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of this application.

[0040] Figure 2This is a schematic diagram designed to reflect the main structure of the isolation device.

[0041] Figure 3 yes Figure 2 Schematic diagram of the main cutaway view.

[0042] Figure 4 This is a schematic diagram of the cross-section structure made to reflect the structure of the filter component.

[0043] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0044] Description of reference numerals: 1. delivery pipe; 11. main pipe; 12. branch pipe; 13. control valve; 2. filter assembly; 21. isolation screen; 211. mesh cylinder; 212. first ridge; 213. second ridge; 214. blocking plate; 215. sliding plate; 22. collecting cylinder; 221. mounting ring; 222. driving motor; 223. sliding groove; 224. pressing spring; 225. limit block; 226. groove; 227. avoidance hole; 23. collecting space; 3. mounting frame; 31. mounting rod; 311. fixing rod; 3111 , jack; 312, sliding rod; 313, adjusting cylinder; 32, working position; 33, unloading position; 34, driving assembly; 341, driving motor; 4, collecting box; 41, cleaning cylinder; 42, balancing hole; 43, baffle; 44, rotating motor; 45, contact switch; 46, feed port; 47, suction cup; 51, push plate; 52, driving assembly; 521, pull rope; 522, force spring; 6, energy storage assembly; 61, lithium battery; 62, osmotic pressure battery; 621, osmotic chamber; 622, suction pipe; 623, drain pipe. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-5 This application is described in further detail.

[0046] The present application embodiment discloses a desalination water isolation screen driven by an osmotic pressure battery. Figure 1 The desalination water isolation screen driven by an osmotic pressure battery includes a delivery pipe 1 for delivering water to the desalination system, an isolation device body for preventing impurities in the water from reaching the delivery pipe 1, and an energy storage component 6 for providing power to the isolation device body and ensuring the normal operation of the isolation device body. In actual use, the end of the delivery pipe 1 away from the isolation device body is connected to the water intake well, and the water in the water intake well is transported to the desalination system by a water pump, while the isolation device body filters the water transported to the water intake well by the delivery pipe 1.

[0047] The delivery pipe 1 includes a main pipe 11 connected to a water well at one end and two branch pipes 12 fixedly connected to one end of the main pipe 11. A tee is formed between the main pipe 11 and the two branch pipes 12. The end of the main pipe 11 away from the two branch pipes 12 is used to connect to the water well. Two isolation device bodies are provided, and the two isolation device bodies are used to filter the water entering the two branch pipes 12 respectively. At the same time, a control valve 13 is installed on each branch pipe 12. When in use, the two control valves 13 are both in an open state, and water is transported to the main pipe 11 through the two branch pipes 12. When too much impurities are accumulated at one of the separation device bodies, the control valve 13 on the corresponding branch pipe 12 can be controlled to be closed, and then the isolation device body can automatically clean the impurities on its own filter screen. When the impurities are cleaned, the corresponding control valve 13 is opened, and water can be supplied to the main pipe 11 through the two branch pipes 12 at the same time.

[0048] It is understandable that pressure sensors may be installed at the water inlets of the two branch pipes 12 to detect the degree of impurity blockage at each branch pipe 12 through the pressure sensors, thereby determining whether the isolation device body at the branch pipe needs to be cleaned.

[0049] Reference Figure 2 and Figure 3 The isolation device body includes a filter assembly 2 disposed at the end of the branch pipe 12 for filtering impurities entering the branch pipe 12. The filter assembly 2 includes a cylindrical isolation screen 21 with an open end and a collection cylinder 22 sleeved on the isolation screen 21. The collection cylinder 22 is also open at one end, and the opening direction of the collection cylinder 22 is opposite to the opening direction of the isolation screen 21, so that a collection space 23 for collecting impurities is formed between the collection cylinder 22 and the isolation screen 21. When in use, the open end of the isolation screen 21 is directly abutted against the branch pipe 12. At this time, the water pump at the end of the main pipe 11 away from the branch pipe 12 pumps the water in the sea into the main pipe 11 through the branch pipe 12, and the water in the sea flows from the collection cylinder 22 and passes through the isolation screen 21 to reach the branch pipe 12, and the impurities carried in the water are blocked by the isolation screen 21 to reach the collection cylinder 22. In addition to isolating impurities in the water, the impurities can also be collected. Since the isolation screen 21 is cylindrical, the filtering surface of the water is larger and the probability of the isolation screen 21 being blocked is lower.

[0050] Reference Figure 1 A mounting frame 3 for supporting the filter assembly 2 is also provided. The mounting frame 3 can be supported on the seabed or on a fixed object on the sea surface. The specific support can be determined according to actual needs.

[0051] Reference Figure 2 and Figure 3A mounting rod 31 is rotatably connected to the mounting frame 3 and a driving assembly 34 is fixedly connected to drive the mounting rod 31 to rotate. Two filter assemblies 2 can be provided, and the two filter assemblies 2 are respectively installed at both ends of the mounting rod 31. At the same time, a collection box 4 for collecting impurities is also provided on the mounting frame 3, so that the impurities collected by the collection cylinder 22 can be transferred to the collection box 4, and the impurities are collected by the collection box 4, thereby reducing the probability that the isolation screen 21 is blocked by impurities again.

[0052] When the mounting rod 31 drives the isolation screen 21 to rotate until one end of the branch pipe 12 is blocked, the position of the isolation screen 21 is called the working position 32. When the mounting rod 31 drives the isolation screen 21 to rotate 180 degrees, the isolation screen 21 is located above the collection box 4. The position of the isolation screen 21 is called the discharge position 33. When the isolation screen 21 is located at the working position 32, the axis of the isolation screen 21 is horizontally arranged; when the isolation screen 21 is located at the discharge position 33, the isolation screen 21 can be rotated to the vertical axis, so that the opening of the collection space 23 is aligned with the feed port 46 of the collection box 4.

[0053] Reference Figure 2 and Figure 3 The driving assembly 34 includes a driving motor 341 fixedly connected to the mounting frame 3, and the middle part of the mounting rod 31 is fixedly connected to the output shaft of the driving motor 341. At the same time, a mounting ring 221 is fixedly connected to the outer wall of the collecting barrel 22, and the mounting ring 221 is rotatably connected to the end of the mounting rod 31, and a driving motor 222 for driving the collecting barrel 22 to rotate is fixedly connected to the mounting rod 31. When in use, when the isolation screen 21 is blocked, the collecting barrel 22 is directly driven by the driving motor 341 to rotate from the working position 32 to the unloading position 33, and then the collecting barrel 22 is driven by the driving motor 222 to rotate 90 degrees so that the axis of the collecting barrel 22 is rotated from horizontal placement to vertical placement, and the collection space 23 opens downward and faces the feed port 46 of the collecting box 4. The collecting space 23 is located directly above the collecting box 4.

[0054] The mounting rod 31 includes a fixed rod 311 fixedly connected to the output shaft of the rotating motor 44 and a sliding rod 312 slidably connected to both ends of the fixed rod 311. Both ends of the fixed rod 311 are provided with a plug hole 3111 for the sliding rod 312 to be inserted, and an adjusting cylinder 313 is fixedly connected in the plug hole 3111. The adjusting cylinder 313 is fixedly connected to the bottom of the plug hole 3111, and one end of the sliding rod 312 located in the plug hole 3111 is fixedly connected to the piston rod of the adjusting cylinder 313. The two filter assemblies 2 are respectively installed at one end of the two sliding rods 312 away from the fixed rod 311. When the collecting cylinder 22 rotates to the point where the axis is vertical and the opening of the collecting space 23 is located directly above the feed port 46 of the collecting box 4, the corresponding regulating cylinder 313 contracts, thereby driving the collecting cylinder 22 to slide toward the collecting box 4, thereby driving the collecting cylinder 22 to abut against the collecting box 4, so that the collecting space 23 is aligned with the collecting box 4, so that the impurities in the collecting space 23 can reach the collecting box 4 under the action of gravity.

[0055] Reference Figure 3 and Figure 4 The isolation screen 21 includes a net tube 211 and a blocking plate 214 slidably connected to the net tube 211. The blocking plate 214 is used to close one end of the net tube 211, so that the isolation screen 21 is in the shape of a cylinder with one end open. The collecting cylinder 22 is sleeved on the net tube 211 and slidably cooperates with the net tube 211.

[0056] Specifically, sliding plates 215 are fixedly connected to opposite sides of the blocking plate 214, and sliding grooves 223 for sliding the sliding plates 215 are provided at opposite inner walls of the net tube 211. A holding spring 224 is installed in each sliding groove 223, and the holding spring 224 is fixedly connected between one end of the sliding groove 223 and the sliding plate 215. When the opening of the collecting space 23 is placed downward, the holding spring 224 is located on the upper side of the sliding plate 215.

[0057] At the same time, a cleaning cylinder 41 is fixedly connected in the collection box 4 for driving the blocking plate 214 to slide in the net tube 211. When the opening end of the collection tube 22 abuts against the collection box 4, the piston rod of the cleaning cylinder 41 is controlled to extend, and the piston rod of the cleaning cylinder 41 will abut against the blocking plate 214, and drive the blocking plate 214 to slide in the net tube 211. When the blocking plate 214 slides in the net tube 211, the water in the net tube 211 will be pushed out of the net tube 211, and the water in the net tube 211 will be discharged from the side wall of the net tube 211 and the opening end of the net tube 211. At this time, the water discharged from the net tube 211 will backwash the side wall of the net tube 211, thereby cleaning out the impurities adhering to the outer wall of the net tube 211. The water discharged from the side wall of the net tube 211 will reach the collecting tube 22, so that the pressure in the collecting tube 22 increases, thereby driving the impurities in the collecting tube 22 to flow toward the collecting box 4, making it easier to discharge the impurities in the collecting tube 22.

[0058] Among them, a limit block 225 is fixed in each sliding groove 223, and when the cleaning cylinder 41 drives the blocking plate 214 to slide in the net tube 211 until the blocking plate 214 abuts against the limit block 225, the sliding limit position of the blocking plate 214 can be fixed. At this time, as the cleaning cylinder 41 continues to extend, the blocking plate 214 will drive the net tube 211 to slide relative to the collecting tube 22, so that the impurities on the outer wall of the net tube 211 are scraped off by the collecting tube 22, and the net tube 211 is further cleaned thoroughly.

[0059] Reference Figure 4 and Figure 5 , a convex ridge with a semicircular cross section is fixedly connected to the outer wall of the net tube 211, and a groove 226 for the convex ridge to be embedded is provided on the inner wall of the collecting tube 22. Two convex ridges are provided, and the two convex ridges are respectively located at the two ends of the net tube 211. Among them, a convex ridge located at the open end of the net tube 211 is called a first convex ridge 212, and a convex ridge located away from the open end of the net tube 211 is called a second convex ridge 213. Under normal conditions, the first convex ridge 212 is located in the groove 226, thereby fixing the relative position between the net tube 211 and the collecting tube 22. When the cleaning cylinder 41 is extended and drives the net tube 211 to slide in the collecting tube 22 through the blocking plate 214, the first convex ridge 212 slides out of the groove 226 under the action of hard force, so that the net tube 211 slides in the collecting tube 22 until the piston rod of the cleaning cylinder 41 is extended to the limit position, at which time the second convex ridge 213 is also embedded in the groove 226, and the position of the net tube 211 in the collecting tube 22 is fixed again. Then the piston rod of the cleaning cylinder 41 can be controlled to reciprocate and extend, so that the cleaning cylinder 41 drives the blocking plate 214 to slide repeatedly in the net cylinder 211, so that the water from the outside can reach the net cylinder 211 and be discharged from the net cylinder 211, and repeat several times in sequence to achieve thorough cleaning of the net cylinder 211. The impurities in the collecting cylinder 22 also fall into the collecting box 4 under the action of gravity. When the cleaning is completed, the piston rod of the cleaning cylinder 41 retracts, thereby driving the blocking plate 214 to slide in the net cylinder 211 until the blocking plate 214 slides to the end of the sliding groove 223 away from the spring 224; as the piston rod of the cleaning cylinder 41 continues to retract, the blocking plate 214 will drive the second ridge 213 to slide out of the groove 226, thereby driving the net cylinder 211 to slide relative to the collecting cylinder 22, until the first ridge 212 is embedded in the groove 226 again, completing the cleaning of the isolation screen 21.

[0060] In order to enable the piston rod of the cleaning cylinder 41 to smoothly drive the blocking plate 214 to retract, a suction cup 47 is installed on the piston rod of the cleaning cylinder 41. It is understandable that a control water pump (not shown in the figure) for draining the water in the suction cup 47 and a control pipe (not shown in the figure) for conveying external water to the suction cup 47 are also provided, and a mounting valve (not shown in the figure) is installed on the control pipe. When the piston rod of the cleaning cylinder 41 drives the suction cup 47 to abut against the blocking plate 214, the control water pump is started to drain the water between the suction cup 47 and the blocking plate 214, so that the suction cup 47 can be firmly adsorbed on the blocking plate 214, so that when the piston rod of the cleaning cylinder 41 is extended and retracted, the blocking plate 214 can be smoothly driven to slide back and forth. When the piston rod of the cleaning cylinder 41 drives the sealing plate 214 to reset, the operating installation valve is opened, so that the external water can reach between the suction cup 47 and the sealing plate 214 through the control pipe, thereby releasing the fixed relationship between the suction cup 47 and the sealing plate 214.

[0061] Reference Figure 4 and Figure 5 In order to ensure that the impurities in the collecting cylinder 22 can fall smoothly into the collecting box 4, a push plate 51 is slidably connected in the collecting cylinder 22 for pushing out the impurities in the collecting cylinder 22. The push plate 51 is also sleeved on the net cylinder 211, and a driving component 52 is provided between the push plate 51 and the sealing plate 214 for driving the push plate 51 to slide through the sliding of the sealing plate 214.

[0062] Specifically, the driving assembly 52 includes a pull rope 521 fixed to the side of the blocking plate 214 facing the abutting spring 224 and a force spring 522 fixed between the closed end of the collection tube 22 and the push plate 51. One end of the pull rope 521 away from the blocking plate 214 passes through the closed end of the collection tube 22 and the bottom of the sliding groove 223 and is fixed to the push plate 51. Under normal conditions, the blocking plate 214 abuts against one end of the sliding groove 223 under the elastic force of the abutting spring 224, the push plate 51 is pulled by the pull rope 521 to be located at the set position of the collection tube 22, and the force spring 522 is in a compressed state. When the cleaning cylinder 41 drives the sealing plate 214 to slide in the net tube 211, the sealing plate 214 drives the end of the pull rope 521 to move. At this time, under the action of the force spring 522, the push plate 51 moves toward the open end of the collecting tube 22, thereby pushing the impurities in the collecting tube 22 out of the collecting tube 22, so that the impurities in the collecting tube 22 can fall smoothly downward into the collecting box 4.

[0063] At the same time, in order to prevent the pull rope 521 from being clamped between the net cylinder 211 and the collecting cylinder 22 during the sliding of the net cylinder 211 relative to the collecting cylinder 22, thereby causing wear to the pull rope 521, an avoidance hole 227 for the pull rope 521 to be embedded in is opened on the inner wall of the collecting cylinder 22. When the net cylinder 211 slides out from the closed end of the collecting cylinder 22, the pull rope 521 is also embedded in the avoidance hole 227 to protect the pull rope 521.

[0064] Of course, in order to avoid damage to the bending part of the pull rope 521, a reversing wheel can also be provided at the bending part of the pull rope 521 to reduce the wear on the pull rope 521.

[0065] It is understandable that a balance hole 42 is provided through the inner and outer walls of the collecting box 4 (see Figure 3 ), the balance hole 42 can ensure the balance of the pressure inside and outside the collection box 4, so that the impurities in the collection tube 22 can smoothly reach the collection box 4. And when the collection box 4 collects impurities for a period of time, the staff can pull the collection box 4 out on the sea surface to clean the impurities in the collection box 4; or when the impurities in the collection tube 22 are poured into the collection box 4 for a set number of times, the staff can pull the collection box 4 out on the sea surface to clean the impurities in the collection box 4; of course, a pressure sensor can also be installed in the collection box 4 to detect whether the balance hole 42 is blocked by impurities. When the impurities in the collection box 4 reach the set value / set number of times, or the pressure sensor detects that the blockage of the balance hole 42 reaches the set degree, the staff can pull the collection box 4 out of the sea level to clean the impurities in the collection box 4.

[0066] Reference Figure 3 A baffle 43 is also provided at the feed inlet 46 of the collection box 4 for blocking the feed inlet 46. Under normal conditions, the baffle 43 blocks the feed inlet 46 to prevent the impurities in the collection box 4 from overflowing from the feed inlet 46 under the action of the water flow and flowing into the sea again.

[0067] The baffle 43 is located inside the collection box 4, and the diameter of the baffle 43 is larger than the diameter of the feed port 46. A rotating motor 44 is fixedly connected to the collection box 4 to drive the baffle 43 to rotate, and the rotating axis of the baffle 43 is located on one side of the feed port 46. Under normal conditions, the baffle 43 can be rotated until the axis coincides with the axis of the feed port 46, so that the baffle 43 can block the feed port 46, and when the rotating motor 44 drives the baffle 43 to rotate, the baffle 43 can be rotated to the side of the feed port 46, so that the feed port 46 is opened.

[0068] Among them, a contact switch 45 is fixedly connected to one side of the collection box 4 where the feed port 46 is opened. The contact switch 45 is connected to the rotating motor 44, so that when the collection barrel 22 abuts against the collection box 4, the open end of the collection barrel 22 will contact the contact switch 45. At this time, the contact switch 45 controls the rotating motor 44 to start, so that the rotating motor 44 drives the baffle 43 to rotate a set angle, so that the baffle 43 opens the feed port 46, so that the impurities in the collection barrel 22 can smoothly reach the collection box 4. When the impurities in the collection barrel 22 are discharged, the regulating cylinder 313 drives the collection barrel 22 to rise to the unloading position 33, the collection barrel 22 releases the abutment relationship with the contact switch 45, and the rotating motor 44 drives the baffle 43 to rotate in the opposite direction by a set angle, so that the baffle 43 blocks the feed port 46 again. The cleaned isolation screen 21 is waiting at the unloading position 33 . After the isolation screen 21 at the working position 32 is blocked, the installation rod 31 can be driven to rotate by the driving motor 341 to realize the replacement of the two isolation screens 21 .

[0069] It is understandable that, in actual use, when replacing the isolation screen 21 at a branch pipe 12, the control valve 13 at the corresponding branch pipe 12 can be controlled to be closed until the mounting rod 31 rotates 180 degrees and the replacement of the isolation screen 21 is completed, and then the control valve 13 can be controlled to be opened. When the branch pipe 12 is closed, water only flows into the main pipe 11 through another branch pipe 12, so that the isolation screen 21 can be cleaned without stopping the water. It also prevents impurities in the water from entering the branch pipe 12 during the process of rotating the mounting rod 31 to replace the positions of the two isolation screens 21.

[0070] Reference Figure 1The energy storage component 6 includes a lithium battery 61 and an osmotic pressure battery 62; the lithium battery 61 is connected to the isolation device body to provide electrical energy for the isolation device body; the osmotic pressure battery 62 includes an osmotic chamber 621, a turbine (not shown in the figure) installed in the osmotic chamber 621, two pumping pipes 622 installed on one side of the osmotic chamber 621, and a drain pipe 623 installed on the other side of the osmotic chamber 621, one of which is connected to the desalination device to receive the high-concentration salt water discharged from the seawater desalination device; the other pumping pipe 622 is connected to the sewage treatment plant to receive the fresh water discharged from the sewage treatment plant. The outlet of the drain pipe 623 is set at a remote sea location, which is used to mix the concentrated salt water and fresh water into a mixed liquid with a salinity close to that of seawater, and then transport it to the remote sea through a pipeline for discharge. When the high-concentration salt water discharged from the desalination device received in one pumping pipe 622 and the fresh water from the sewage treatment plant received in another pumping pipe 622 reach the osmosis chamber 621, a semipermeable membrane is arranged in the osmosis chamber 621, and the high-concentration salt water and fresh water are respectively located on both sides of the semipermeable membrane, so that an osmotic pressure will be formed on both sides of the semipermeable membrane in the osmosis chamber 621, and the osmotic pressure promotes water to penetrate from the low-concentration side through the semipermeable membrane to the high-concentration side, and the pressure generated by the movement of fresh water can drive the turbine in the osmosis chamber 621 to rotate and generate electricity. Among them, the osmosis chamber 621 is also connected to the lithium battery 61 to transmit the electricity generated by the rotation of the turbine to the lithium battery 61, and the electrical energy is stored by the lithium battery 61. The osmotic pressure cell 62 can make secondary use of the concentrated brine discharged from the desalination device and the fresh water discharged from the sewage treatment plant to achieve osmotic power generation to ensure the normal operation of the isolation device body. At the same time, it can also neutralize the salinity of the concentrated brine and the fresh water in the osmotic pressure cell 62, and then transport the mixed liquid to the open sea through the drain pipe 623 for discharge, ensuring that the discharged water will not affect the water quality of the seawater desalination water intake.

[0071] Of course, the energy storage component 6 can also be a power supply device installed on the shore, which supplies power to the isolation device body in the sea through electric wires; or the energy storage component 6 can be a battery installed in a suitable position, and the battery is connected to an external power source to supply power to the isolation device body through the battery. The energy storage component 6 can also be in other forms, as long as it can supply power to the isolation device body to ensure the normal operation of the isolation device body.

[0072] The implementation principle of the desalination water intake isolation screen based on osmotic pressure battery drive in the embodiment of the present application is as follows: under normal conditions, water is supplied to the main pipe 11 through two branch pipes 12 at the same time, and the isolation screen 21 located at the two branch pipes 12 filters the water entering the branch pipe 12. When the isolation screen 21 at one of the branch pipes 12 is blocked, the control valve 13 on the branch pipe 12 can be controlled to be closed, and at this time, water is supplied to the main pipe 11 through the other branch pipe 12. At the same time, the drive motor 341 at the blocked branch pipe 12 is controlled to start, so that the blocked isolation screen 21 is rotated to the discharge position 33, and the isolation screen 21 at the other end of the mounting rod 31 is rotated from the discharge position 33 to the branch pipe 12, so as to replace the isolation screen 21 at the branch pipe 12. At this time, the control valve 13 on the branch pipe 12 is controlled to be opened, and the main pipe 11 can continue to be supplied with water through the two branch pipes 12. At the same time, the isolation screen 21 rotated to the discharge position 33 by the mounting rod 31 is also located above the collection box 4. At this time, the collection tube 22 is driven down by the adjusting cylinder 313, so that the open end of the collection tube 22 abuts against the collection box 4. At this time, the open end of the collection tube 22 also abuts against the contact switch 45. The contact switch 45 controls the rotation motor 44 to start, and the rotation motor 44 will drive the baffle 43 to rotate 180 degrees, so that the feed port 46 is opened. At this time, the piston rod of the cleaning cylinder 41 extends, so that the suction cup 47 is adsorbed on the blocking plate 214. The cleaning cylinder 41 drives the blocking plate 214 to slide in the mesh tube 211, so that the impurities in the mesh tube 211 can be cleaned out, and the impurities in the collection tube 22 fall into the collection box 4 through the feed port 46, so as to collect the impurities. Finally, the piston rod of the regulating cylinder 313 is retracted to drive the collecting tube 22 away from the collecting box 4. At this time, the matching relationship between the collecting tube 22 and the contact switch 45 is released, and the rotating motor 44 drives the baffle 43 to flip, so that the baffle 43 blocks the feed inlet 46 again, completing the replacement and cleaning of the blocked isolation screen 21. The automatic cleaning of the isolation screen 21 is realized, the labor cost is reduced, and the stable operation of the seawater desalination system is ensured.

[0073] Since the desalination system produces fresh water after filtering the original seawater, it also concentrates the original seawater to form a large amount of concentrated brine. If these concentrated brine are discharged directly into the sea, the salinity of the sea area will increase over time and damage the marine ecological environment. Therefore, desalination plants usually mix the "concentrated seawater" produced during seawater desalination with freshwater sources such as treated sewage, and then discharge it into the sea after reducing the salinity. The present application utilizes the method of treating concentrated brine in the prior art, and generates electricity through the osmotic pressure generated by the isolation of the osmotic membrane when the concentrated brine and freshwater discharged from other treatment facilities are mixed during the desalination process, and supplies power to the isolation screen, so that the isolation screen has a self-cleaning function, and can clean the isolation screen without stopping the machine, thereby reducing labor costs and ensuring the working efficiency of the seawater desalination system.

[0074] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A desalination water isolation screen driven by an osmotic pressure battery, characterized in that: include: A delivery pipe (1) for delivering water to a seawater desalination system and an isolation device body for preventing impurities in the water from reaching the delivery pipe (1), the delivery pipe (1) comprising a main pipe (11) and two branch pipes (12) fixedly connected to one end of the main pipe (11), each branch pipe (12) being provided with a control valve (13), two isolation device bodies being provided, the two isolation device bodies being respectively used for blocking and filtering one end of the two branch pipes (12) away from the main pipe (11), the isolation device body comprising: A filter assembly (2) is arranged at the end of the branch pipe (12) and is used to filter and collect impurities entering the branch pipe (12); the filter assembly (2) comprises an isolation screen (21) and a collection cylinder (22); The isolation screen (21) is in the shape of a cylinder with one end open, and the open end of the isolation screen (21) abuts against the end of the branch pipe (12) to filter impurities entering the branch pipe (12); The collecting cylinder (22) is in the shape of a cylinder with one end closed, and is sleeved on the isolation screen (21). The open end of the isolation screen (21) and the open end of the collecting cylinder (22) are opposite to each other, and a collecting space (23) for collecting impurities is formed between the outer wall of the collecting cylinder (22) and the isolation screen (21); A mounting frame (3) for supporting the filter assembly (2); A mounting rod (31), the middle portion of which is rotatably connected to the mounting frame (3), at least two filter assemblies (2) are provided, and at least two filter assemblies (2) are mounted on both ends of the mounting rod (31); A driving assembly (34) fixedly connected to the mounting frame (3) and used for driving the mounting rod (31) to rotate; A collecting box (4) is mounted on the mounting frame (3) and has a feed port (46) on the top thereof, for collecting impurities collected in the collecting space (23); An energy storage component (6) is used to provide power to the isolation device body to ensure the normal operation of the isolation device body; When the isolation screen (21) is located at the branch pipe (12), it is called the working position (32); when the installation rod (31) drives the isolation screen (21) to be located on the upper side of the collection box (4), it is called the unloading position (33); the collection cylinder (22) is rotatably connected to the installation rod (31); a driving motor (222) is fixedly connected to the installation rod (31) for driving the filter assembly (2) to rotate so that the collection space (23) opens downward; when the collection space (23) opens downward, the collection space (23) opens opposite to the feed port (46) of the collection box (4); the isolation screen (21) comprises a mesh cylinder (211) and a sliding member slidably connected to the mesh cylinder (211). ), the collecting tube (22) is sleeved on the net tube (211) and slidably cooperates with the net tube (211), a cleaning cylinder (41) is fixedly connected in the collecting box (4) for driving the sealing plate (214) to slide in the net tube (211), when the cleaning cylinder (41) drives the sealing plate (214) to slide to the limit position and continues to apply force, the net tube (211) slides in the collecting tube (22); a convex ridge is fixedly connected to the outer wall of the net tube (211), and a groove (226) is provided on the collecting tube (22) for the convex ridge to be embedded, and two convex ridges are provided, and the two convex ridges are respectively located at two ends of the net tube (211); A convex ridge located at the open end of the net cylinder (211) is called a first convex ridge (212), and a convex ridge located away from the open end of the net cylinder (211) is called a second convex ridge (213); in a normal state, the first convex ridge (212) is located in the groove (226) to fix the relative position between the net cylinder (211) and the collecting cylinder (22); when the cleaning cylinder (41) is extended and drives the net cylinder (211) to slide in the collecting cylinder (22) through the blocking plate (214), the first convex ridge (212) slides out of the groove (226) under the action of hard force, and the net cylinder (211) is 11) slides in the collecting cylinder (22) until the piston rod of the cleaning cylinder (41) is extended to the limit position and the second ridge (213) is also embedded in the groove (226) to re-fix the position of the net cylinder (211) in the collecting cylinder (22); then the piston rod of the cleaning cylinder (41) is controlled to reciprocate and extend, and the cleaning cylinder (41) drives the blocking plate (214) to slide repeatedly in the net cylinder (211), and the external water reaches the net cylinder (211) and is discharged from the net cylinder (211), and this process is repeated several times in sequence to achieve thorough cleaning of the net cylinder (211).

2. The desalination water intake isolation screen based on osmotic pressure battery drive according to claim 1 is characterized in that: Sliding grooves (223) are provided at two opposite inner walls of the net cylinder (211), and sliding plates (215) are fixedly connected to the opposite sides of the blocking plate (214). The two sliding plates (215) are respectively slidably connected in the two sliding grooves (223), and a clamping spring (224) is installed in each sliding groove (223). The clamping spring (224) is fixedly connected between one end of the sliding groove (223) away from the opening of the collecting space (23) and the sliding plate (215).

3. The desalination water intake isolation screen based on osmotic pressure battery drive according to claim 2 is characterized in that: A push plate (51) for pushing out impurities in the collecting cylinder (22) is slidably connected inside the collecting cylinder (22); the push plate (51) is sleeved on the net cylinder (211); and a driving component (52) is provided between the push plate (51) and the sealing plate (214) for driving the push plate (51) to slide through the sliding of the sealing plate (214).

4. The desalination water intake isolation screen based on osmotic pressure battery drive according to claim 3 is characterized in that: The driving assembly (52) includes a pull rope (521) fixedly connected to the side of the sealing plate (214) facing the clamping spring (224) and a force spring (522) fixedly connected between the closed end of the collecting tube (22) and the push plate (51). The end of the pull rope (521) away from the sealing plate (214) is passed through the closed end of the collecting tube (22) and the net tube (211) on which the clamping spring (224) is installed, and then fixedly connected to the push plate (51). When the sealing plate (214) slides in the net tube (211), the sealing plate (214) slides in the collecting tube (22) under the action of the force spring (522).

5. The seawater desalination water intake isolation screen driven by osmotic pressure battery according to claim 1, characterized in that: A baffle (43) for blocking the feed port (46) is arranged in the collection box (4); the baffle (43) is rotatably connected to the collection box (4); the baffle (43) rotates to block the feed port (46) or to open the feed port (46); and a rotating motor (44) is fixedly connected to the collection box (4) to drive the baffle (43) to rotate.

6. The desalination water intake isolation screen based on osmotic pressure battery drive according to claim 5 is characterized in that: The mounting rod (31) comprises a fixed rod (311) rotatably connected to the mounting frame (3) and sliding rods (312) slidably connected to both ends of the fixed rod (311). An adjusting cylinder (313) is provided between the fixed rod (311) and each of the sliding rods (312) for driving the sliding rods (312) to slide so as to adjust the length of the mounting rod (31). When the filter assembly (2) is rotated to the point where the opening of the collection space (23) faces downward, the adjusting cylinder (313) can bring the opening of the collection space (23) into contact with the feed port (46) of the collection box (4).

7. The desalination water intake isolation screen driven by osmotic pressure battery according to claim 6 is characterized in that: A contact switch (45) is fixedly connected to the outer wall of the collection box (4); when the opening of the collection space (23) of the filter assembly (2) abuts against the feed port (46) of the collection box (4), the filter assembly (2) abuts against the contact switch (45), and the contact switch (45) controls the rotating motor (44) to drive the baffle (43) to rotate until the feed port (46) is opened.

Images