A reverse osmosis apparatus for seawater desalination

Abstract

The application discloses a reverse osmosis equipment for seawater desalination, which comprises a reverse osmosis equipment, and at least comprises a cleaning filter, a multi-medium filter, a precision filter, a reverse osmosis structure and a fresh water collecting box, the reverse osmosis structure is connected with a moving structure, and the moving structure is provided with a flushing structure; the moving structure comprises a pair of parallel annular tracks, a pair of sliding bodies, a rack A, a gear A, a driving motor A and a supporting seat. The application has the beneficial effect that a new reverse osmosis structure for seawater is designed according to the above problems, the reverse osmosis structure is provided with an automatic cleaning equipment for reverse osmosis, the cleaning equipment is connected with the reverse osmosis part in a linkage mode, that is to say, the reverse osmosis membrane in the reverse osmosis equipment can be automatically flushed regularly, the equipment is in a continuous working state, and the reverse osmosis membrane can be flushed without long-time shutdown.

Description

Technical Field

[0001] This invention relates to the field of seawater treatment, and in particular to a reverse osmosis device for seawater desalination. Background Technology

[0002] Seawater desalination, also known as seawater leaching or seawater desalination, refers to the process of removing excess salt and minerals from water to obtain fresh water. The process of obtaining fresh water from seawater is called seawater desalination. Seawater desalination is a technology for increasing water resources, expanding the total amount of freshwater available. It is unaffected by time, space, or climate, produces high-quality water, and its price is becoming increasingly reasonable, ensuring a stable supply of drinking water for coastal residents and feedwater for industrial boilers. Currently used seawater desalination methods include seawater freezing, electrodialysis, distillation, and reverse osmosis. Reverse osmosis, using reverse osmosis membranes, has rapidly gained market share due to its simple equipment, ease of maintenance, and modular design, gradually replacing distillation as the most widely used method.

[0003] For example, Chinese Patent Publication No. CN107551819A discloses a rinsing device for a reverse osmosis membrane used in seawater desalination. The technical problem this invention aims to solve is to provide a rinsing device for a reverse osmosis membrane used in seawater desalination that can thoroughly rinse the membrane and save time and effort. To solve the above technical problem, this invention provides such a rinsing device for a reverse osmosis membrane used in seawater desalination, including a mounting frame; a water tank is placed on the bottom left side of the mounting frame, a placement mechanism is provided on the upper part of the mounting frame, and a spraying mechanism is provided on the lower part of the mounting frame. This invention achieves the effect of thoroughly rinsing the reverse osmosis membrane and saving time and effort. The placement mechanism facilitates the overall placement and removal of the reverse osmosis membrane and secures it to prevent it from falling during rinsing. The spraying mechanism thoroughly rinses the reverse osmosis membrane, thereby cleaning away any sediment on the membrane.

[0004] The instruction manual states that "a placement mechanism is included for easy placement and removal of the reverse osmosis membrane, and it can also secure the membrane to prevent it from falling off during rinsing. A spraying mechanism is included to thoroughly rinse the reverse osmosis membrane, ensuring that any sediment is removed. A first motor and rotating rod are included to rotate the reverse osmosis membrane, ensuring even rinsing and increasing overall rinsing efficiency. A second motor, cam, and second spring are included to eliminate the need for manual lever operation, achieving semi-automation and saving labor costs. A swing rod, connecting rod, second slide rail, and second slider are included to allow the nozzles to continuously spray water left and right, ensuring thorough and even water spraying of the reverse osmosis membrane and improving overall efficiency. A feed hopper and stirring rod are included; when sediment on the reverse osmosis membrane is excessively stubborn, chemical agents can be used to rinse it."

[0005] The advantage of this patent is that it can rinse the reverse osmosis membrane. However, the technology is a semi-automated structure, and manual intervention is required when cleaning and removing the reverse osmosis membrane, which is quite troublesome.

[0006] For example, Chinese Patent Publication No. CN114307658A discloses a reverse osmosis membrane flushing device and its flushing method for reverse osmosis protection, relating to the field of reverse osmosis membrane flushing. This invention includes a reverse osmosis membrane flushing device and a reverse osmosis membrane flushing method. When the stirring rod moves to the upper part of the reciprocating screw, it will contact the trigger block and simultaneously drive the trigger block to move upward. At this time, the extrusion block will also move into the extrusion groove to extrude the air bag, thereby compressing the gas inside the air bag into the dosing box. This will drive the piston block to slide to the other end of the dosing box, extruding the liquid inside the dosing box and causing the liquid to be sprayed out from the nozzle into the tank. The nozzle is equipped with a one-way valve, so the liquid will only be sprayed out and will not allow water inside the tank to enter the dosing box, thus avoiding dilution and contamination of the unused liquid inside the dosing box. With the rotation of the stirring rod, the liquid and water are fully mixed to meet the requirements of subsequent flushing.

[0007] The patent document describes a method for rinsing reverse osmosis membranes with a chemical solution, and it is largely automated. However, this method can only rinse one reverse osmosis membrane, while in reality, seawater reverse osmosis equipment contains multiple reverse osmosis membranes, making the cleaning process relatively complicated. Summary of the Invention

[0008] The purpose of this invention is to solve the above-mentioned problems by designing a reverse osmosis device for seawater desalination.

[0009] The technical solution of the present invention to achieve the above objectives is a reverse osmosis device for seawater desalination, comprising a reverse osmosis device, wherein the reverse osmosis device includes at least: a cleaning filter, a multi-media filter, a precision filter, a reverse osmosis structure, and a freshwater collection tank, wherein a movable structure is connected to the reverse osmosis structure, and a flushing structure is provided on the movable structure;

[0010] The moving structure includes: a pair of parallel annular tracks, a pair of sliders, rack A, gear A, drive motor A, and support base;

[0011] The annular track is laid around the reverse osmosis equipment. The pair of sliding bodies are installed on the annular track. The rack A is set in the middle of the pair of annular tracks. The support base is set on the pair of sliding bodies. The drive motor A is set at the bottom of the support base. The drive end of the drive motor A is connected to the gear A. The gear A and the rack A mesh with each other.

[0012] The flushing structure is mounted on a support base and includes: a support platform A, a support platform B, a bottom track, a middle track, a drive motor C, several return springs, several sliding columns, a pump, and a flushing pipe.

[0013] The drive motor C is mounted on the support platform B; the pump is mounted on the flushing pipe.

[0014] The bottom track is mounted on the support base, and the support platform A is mounted on the bottom track. A pair of racks B are fitted on the outside of the support platform A. A drive motor B is provided on the support base. The drive end of the drive motor B is connected to the gear B, and the gear B meshes with the pair of racks B.

[0015] A backwashing groove is formed at the center of the support platform A and located between a pair of racks B. A central track is installed in the backwashing groove. One end of the flushing pipe is set on the central track and extends into the support platform A. A support column is set at the center of the support platform A. The support platform B is installed on the support column. Several fixing holes are formed on the support platform B. The support platform B has a fixture and an impurity collector.

[0016] A plurality of backwashing grooves are provided on the surface of the support platform A. Blind holes are provided on opposite sides of the backwashing grooves. A sliding column is installed in the blind hole by a return spring. The blind hole is connected to the support platform A. The sliding column has a through groove. A support plate is provided inside the backwashing groove. The center of the support plate has an opening.

[0017] The flushing fluid is drawn into the upper layer of the support platform A after being drawn in through the flushing pipe. When the sliding column is pushed back by the bottom of the reverse osmosis membrane, it enters through the blind hole and passes through the through groove on the sliding column to the bottom of the backwash tank, and then enters the reverse osmosis membrane through the opening in the center of the support plate.

[0018] Preferably, the fastener comprises: a plurality of elastic telescopic columns and a plurality of sliding wheels;

[0019] The elastic telescopic columns are installed on the support platform B. The ends of the elastic telescopic columns are connected to several sliding wheels. When the reverse osmosis membrane passes through the inlet hole of the support platform B, it will come into contact with the sliding wheels.

[0020] Preferably, the impurity collector comprises: several upper L-shaped collection hoods, several lower collection hoods, a lifting motor, a central gear C, and several racks C;

[0021] The support platform B has a backwashing tank at its center. The lifting motor is installed in the backwashing tank. The lifting end of the lifting motor is equipped with a mounting platform. The bottom of the central gear C is mounted on the mounting platform via the drive motor C. The rack C is located on one end of the L-shaped collection cover, and the rack C meshes with the gear C.

[0022] The lower collection cover is installed on the outer wall of the support platform B. The bottom of the lower collection cover is provided with an annular collection groove. The bottom surface of the collection groove is provided with an H-shaped fastener, which connects the two parts of the collection groove, and both parts of the collection groove can rotate in the H-shaped fastener.

[0023] It also includes a collection tube, one end of which is embedded in a fixing member and extends into a collection groove, and the other end of the collection tube is connected to a collection box.

[0024] Preferably, both the flushing pipe and the collection pipe are installed on the end face of the house and are rotatable, and the other end of the flushing pipe is connected to a flushing fluid storage tank.

[0025] Preferably, the drive motor A is a self-locking motor.

[0026] Preferably, the reverse osmosis structure has 6 main pipes, and at least 5 reverse osmosis membranes are arranged inside each main pipe.

[0027] Preferably, the mounting platform has a sliding frame, and the outer wall of the rack C can slide within the sliding frame.

[0028] Preferably, the rinsing solution is a fusion of chemical reagents that can solvent the scale in the reverse osmosis membrane.

[0029] Preferably, the fusion solution of the chemical reagents contains an acidic reagent.

[0030] The present invention provides a reverse osmosis device for seawater desalination. In response to the above-mentioned problems, the present invention designs a novel seawater reverse osmosis structure. This reverse osmosis structure includes an automated reverse osmosis cleaning device. The cleaning device is linked to the reverse osmosis section, which means that the reverse osmosis membrane in the reverse osmosis device can be automatically flushed periodically, allowing the device to operate continuously without long-term shutdown. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a reverse osmosis device for seawater desalination according to the present invention;

[0032] Figure 2 This is a schematic diagram of the moving structure described in this invention;

[0033] Figure 3 This is a top view of the reverse osmosis equipment for seawater desalination described in this invention;

[0034] Figure 4 This is a schematic diagram of the structure of the support platform B and the fixer described in this invention;

[0035] Figure 5 This is a schematic diagram of the structure of the impurity collector described in this invention;

[0036] Figure 6 This is a schematic diagram of one state structure of the backwashing structure described in this invention;

[0037] Figure 7 This is a schematic diagram of another state of the backwashing structure described in this invention;

[0038] Figure 8 This is the present invention. Figure 1 A partially enlarged structural schematic diagram;

[0039] In the diagram, 1. Reverse osmosis equipment; 2. Circular track; 3. Sliding body; 4. Rack A; 5. Gear A; 6. Drive motor A; 7. Support base; 8. Support platform A; 9. Support platform B; 10. Bottom track; 11. Middle track; 12. Drive motor C; 13. Return spring; 14. Sliding column; 15. Flushing pipe; 16. Backwash tank; 17. Rack B; 18. Gear B; 19. Support column; 20. Fixing hole; 21. Blind hole; 22. Through groove; 23. Support plate; 24. Opening; 25. Elastic telescopic column; 26. Sliding wheel; 27. Upper L-shaped collection hood; 28. Lower collection hood; 29. ​​Lifting motor; 30. Central gear C; 31. Rack C; 32. Mounting platform; 33. Collection tank; 34. Fixing component; 35. Sliding frame; 36. Freshwater collection tank; 37. Main pipe; 38. Reverse osmosis membrane. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-8 As shown, a reverse osmosis device for seawater desalination.

[0041] A reverse osmosis device 1 for seawater desalination includes a reverse osmosis device 1, which at least includes: a cleaning filter, a multi-media filter, a precision filter, a reverse osmosis structure, and a freshwater collection tank 36. A movable structure is connected to the reverse osmosis structure, and a flushing structure is provided on the movable structure.

[0042] It should be noted that the seawater is filtered through multiple processes, including a cleaning filter, a multi-media filter, a precision filter, and a reverse osmosis structure, before entering the freshwater collection tank 36 for collection.

[0043] After the equipment has been used for a period of time, the control moving structure moves the flushing structure to below the reverse osmosis structure. Then, the water pipe and valve body at the bottom of the reverse osmosis main pipe 37 are manually disassembled, allowing the reverse osmosis membrane 38 located inside the reverse osmosis main pipe 37 to leak out.

[0044] The moving structure includes: a pair of parallel annular tracks 2, a pair of sliders 3, a rack A4, a gear A5, a drive motor A6, and a support base 7;

[0045] A ring track 2 is laid around the reverse osmosis equipment 1. A pair of sliding bodies 3 are installed on the ring track 2. A rack A4 is set in the middle of the pair of ring tracks 2. A support seat 7 is set on the pair of sliding bodies 3. A drive motor A6 is set at the bottom of the support seat 7. The drive end of the drive motor A6 is connected to the gear A5. The gear A5 meshes with the rack A4.

[0046] It should be noted that this technical solution uses a pair of relatively parallel annular tracks 2 to move a pair of sliding bodies 3. Since the support seat 7 is installed on the pair of sliding bodies 3, the support seat 7 can move. Then, the drive motor A6 drives the gear A5. After the gear A5 meshes with the rack A4, the support seat 7 moves to the bottom of the reverse osmosis membrane main tube 37.

[0047] After manually disassembling the valve body and pipeline at the bottom of the reverse osmosis structure, the reverse osmosis membrane 38 is allowed to fall naturally into the support platform A8 and support platform B9. After one connection is completed, the drive motor B needs to be controlled to drive the gear B18. After the gear B18 meshes with the rack B17, the support platform A8 can rotate. Since the support platform A8 and support platform B9 are connected by the support column 19, the support platform A8 and support platform B9 can rotate synchronously to support several reverse osmosis membranes 38.

[0048] The core problems to be solved by this technical solution are: how to clean multiple reverse osmosis membranes 38; how to ensure the rotation of the support platform A8 while maintaining a seal, given that the support platform A8 is a modular structure and a central track has been added in the middle of the support platform A8; and how to achieve high-pressure flushing of the reverse osmosis membranes 38 by the flushing fluid.

[0049] Specifically, this design uses the bottom track 10 to enable the rotation of the support platform A8. A pair of racks B17 are mounted on the outside of the support platform A8, located at the upper and lower ends of the support platform A8 respectively. Driven by the drive motor B gear B18, the gear B18 drives the pair of racks B17, thus enabling the two parts of the support platform A8 to rotate synchronously. Since the middle track 11 is installed in the middle of the support platform A8, both parts of the support platform A8 can rotate.

[0050] Specifically, the reason for adding the central track 11 in this case is that some reverse osmosis structures have a small number of reverse osmosis membranes 38, while the support platform A8 in this case has multiple backwash tanks 16, each of which has an upward-spraying flushing stream. Therefore, when several backwash tanks 16 do not contain reverse osmosis membranes 38, the flushing stream cannot be collected.

[0051] Several backwashing grooves 16 are provided on the surface of the support platform A8. Blind holes 21 are provided on opposite sides of the backwashing grooves 16. The sliding column 14 is installed in the blind hole 21 by a return spring 13. The blind hole 21 is connected to the upper section of the support platform A8. The sliding column 14 has a through groove 22. The backwashing groove 16 has a support piece 23 inside. The center of the support piece 23 has an opening 24.

[0052] After being drawn in from the flushing pipe 15, the flushing fluid enters the upper layer of the support platform A8. When the sliding column 14 is squeezed back by the bottom of the reverse osmosis membrane, it enters from the blind hole 21 and passes through the through groove 22 on the sliding column 14 to the bottom of the backwash tank 16, and enters the reverse osmosis membrane through the opening 24 in the center of the support plate 23.

[0053] Specifically, when the reverse osmosis membrane 38 is entered in the backwash tank 16, the sliding column 14 is squeezed and retracted. Then, the through groove 22 on the sliding column 14 is connected to the upper part of the support platform A8, and the flushing liquid enters the bottom of the backwash tank 16 and enters the reverse osmosis membrane 38, thereby completing the high-pressure backwashing.

[0054] Specifically, the fastener includes: several elastic telescopic columns 25 and several sliding wheels 26;

[0055] Several elastic telescopic columns 25 are installed on the support platform B9. The ends of the elastic telescopic columns 25 are connected to several sliding wheels 26. When the reverse osmosis membrane passes through the inlet hole of the support platform B9, it will come into contact with the sliding wheels 26.

[0056] Specifically, the impurity collector includes: several upper L-shaped collection covers 27, several lower collection covers 28, a lifting motor 29, a central gear C30, and several racks C31;

[0057] The support platform B9 has a backwashing tank 16 at its center. The lifting motor 29 is installed in the backwashing tank 16. The lifting end of the lifting motor 29 is provided with a mounting platform 32. The bottom of the central gear C30 is mounted on the mounting platform 32 through the drive motor C12. The rack C31 is located on one end of the L-shaped collection cover and meshes with the gear C.

[0058] The lower collection cover 28 is installed on the outer wall of the support platform B9. The bottom of the lower collection cover 28 is provided with an annular collection groove 33. The bottom surface of the collection groove 33 is provided with an H-shaped fastener 34. The fastener 34 connects the two parts of the collection groove 33, and both parts of the collection groove 33 can rotate in the H-shaped fastener 34.

[0059] It also includes a collection tube, one end of which is embedded in the fixing member 34 and extends into the collection groove 33, and the other end of the collection tube is connected to a collection box.

[0060] It should be noted that when the reverse osmosis membrane 38 enters the backwash tank 16, the drive motor C12 needs to be controlled to mesh with the gear C. After the gear C meshes with multiple racks C31, the L-shaped collection hood will be retracted at the other end of the rack C31. Then, the lifting motor 29 pulls multiple L-shaped collection hoods down, so that the ends of the L-shaped collection hoods contact the ends of the reverse osmosis membrane 38, and the bottom of the L-shaped collection hoods contact and cooperate with the lower collection hood 28. Then, the pump is turned on, and the flushing liquid continuously enters the reverse osmosis membrane 38, then enters the L-shaped collection hood, and reaches the lower collection hood. After entering the collection tank 33, it finally reaches the collection box through the collection pipe.

[0061] It is important to note that, since this case uses a collection trough 33 to connect multiple collection covers, the collection trough 33 is set into two parts. The bottom surface of the collection trough 33 is provided with an H-shaped fastener 34, which connects the two parts of the collection trough 33, and both parts of the collection trough 33 can rotate in the H-shaped fastener 34.

[0062] It should be noted that when the support platform A8 rotates, only the central track 11 does not rotate; only the upper and lower parts of the support platform A8 rotate on the central track 11. When the annular collection trough 33 rotates, only the two parts of the annular collection trough 33 rotate within the H-shaped fixing member 34, while the H-shaped fixing member 34 does not rotate.

[0063] Specifically, both the flushing pipe 15 and the collection pipe are installed on the end face of the house and can be rotated. The other end of the flushing pipe 15 is connected to a flushing fluid storage tank.

[0064] Specifically, the drive motor A6 is a self-locking motor.

[0065] Specifically, the reverse osmosis structure has 6 main pipes 37, and at least 5 reverse osmosis membranes 38 are installed inside each main pipe 37.

[0066] Specifically, the mounting platform 32 has a sliding frame 35, and the outer wall of the rack C31 can slide within the sliding frame 35.

[0067] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A reverse osmosis device for seawater desalination, comprising a reverse osmosis unit, said reverse osmosis unit including at least: a cleaning filter, a multi-media filter, a precision filter, a reverse osmosis structure, and a freshwater collection tank, characterized in that, A movable structure is connected to the reverse osmosis structure, and a flushing structure is provided on the movable structure; The moving structure includes: a pair of parallel annular tracks, a pair of sliders, rack A, gear A, drive motor A, and support base; The annular track is laid around the reverse osmosis equipment. The pair of sliding bodies are installed on the annular track. The rack A is set in the middle of the pair of annular tracks. The support base is set on the pair of sliding bodies. The drive motor A is set at the bottom of the support base. The drive end of the drive motor A is connected to the gear A. The gear A and the rack A mesh with each other. The flushing structure is mounted on a support base and includes: a support platform A, a support platform B, a bottom track, a middle track, a drive motor C, several return springs, several sliding columns, a pump, and a flushing pipe. The drive motor C is mounted on the support platform B; the pump is mounted on the flushing pipe. The bottom track is mounted on the support base, and the support platform A is mounted on the bottom track. A pair of racks B are fitted on the outside of the support platform A. A drive motor B is provided on the support base. The drive end of the drive motor B is connected to the gear B, and the gear B meshes with the pair of racks B. A backwashing groove is formed at the center of the support platform A and located between a pair of racks B. A central track is installed in the backwashing groove. One end of the flushing pipe is set on the central track and extends into the support platform A. A support column is set at the center of the support platform A. The support platform B is installed on the support column. Several fixing holes are formed on the support platform B. The support platform B has a fixture and an impurity collector. A plurality of backwashing grooves are provided on the surface of the support platform A. Blind holes are provided on opposite sides of the backwashing grooves. A sliding column is installed in the blind hole by a return spring. The blind hole is connected to the support platform A. The sliding column has a through groove. A support plate is provided inside the backwashing groove. The center of the support plate has an opening. After being drawn in through the flushing pipe, the flushing fluid enters the upper layer of the support platform A. When the sliding column is pushed back by the bottom of the reverse osmosis membrane, it enters through the blind hole and passes through the through groove on the sliding column to the bottom of the backflushing tank, and then enters the reverse osmosis membrane through the opening in the center of the support plate.

2. The reverse osmosis equipment for seawater desalination according to claim 1, characterized in that, The fastener includes: several elastic telescopic columns and several sliding wheels; The elastic telescopic columns are installed on the support platform B. The ends of the elastic telescopic columns are connected to several sliding wheels. When the reverse osmosis membrane passes through the inlet hole of the support platform B, it will come into contact with the sliding wheels.

3. The reverse osmosis equipment for seawater desalination according to claim 2, characterized in that, The impurity collector includes: several upper L-shaped collection hoods, several lower collection hoods, a lifting motor, a central gear C, and several racks C; The support platform B has a backwashing tank at its center. The lifting motor is installed in the backwashing tank. The lifting end of the lifting motor is equipped with a mounting platform. The bottom of the central gear C is mounted on the mounting platform via the drive motor C. The rack C is located on one end of the L-shaped collection cover, and the rack C meshes with the gear C. The lower collection cover is installed on the outer wall of the support platform B. The bottom of the lower collection cover is provided with an annular collection groove. The bottom surface of the collection groove is provided with an H-shaped fastener, which connects the two parts of the collection groove, and both parts of the collection groove can rotate in the H-shaped fastener. It also includes a collection tube, one end of which is embedded in a fixing member and extends into a collection groove, and the other end of the collection tube is connected to a collection box.

4. A reverse osmosis device for seawater desalination according to claim 3, characterized in that, Both the flushing pipe and the collection pipe are installed on the end face of the house and can be rotated. The other end of the flushing pipe is connected to a flushing fluid storage tank.

5. A reverse osmosis device for seawater desalination according to claim 4, characterized in that, The drive motor A is a self-locking motor.

6. A reverse osmosis device for seawater desalination according to claim 1, characterized in that, The reverse osmosis structure has 6 main pipes, and at least 5 reverse osmosis membranes are installed inside each main pipe.

7. A reverse osmosis device for seawater desalination according to claim 3, characterized in that, The mounting platform has a sliding frame, and the outer wall of the rack C can slide within the sliding frame.

8. A reverse osmosis device for seawater desalination according to claim 1, characterized in that, The rinsing solution is a fusion of chemical reagents that can be used to dissolve scale in the reverse osmosis membrane.

9. A reverse osmosis device for seawater desalination according to claim 8, characterized in that, The fusion solution of the chemical reagents contains acidic reagents.

Images