A multi-channel multi-particle size seawater membrane filtration system and method thereof

Abstract

The present invention belongs to the field of seawater filtration technology, especially a multi-channel multi-particle size seawater membrane filtration system and method thereof. Aiming at the problem that the seawater filtration method is single and various impurities and pollutants in seawater cannot be completely removed, the following scheme is proposed, including a filter outer barrel, a filter inner barrel is fixedly installed near the center of the upper surface of the barrel bottom of the filter outer barrel, and a water adding bin is welded and fixed on the upper surface of the filter inner barrel, a water inlet pipe is plugged and fixed to the circumferential outer wall of the water adding bin near one side, a mounting hole is opened at the center of the bin bottom of the water adding bin, a microfiltration tube is fixedly plugged and fixed to the circumferential inner wall of the mounting hole, and a pipe sleeve is fixedly sleeved on the circumferential outer wall of the microfiltration tube near the bottom. The present invention gradually filters and removes various impurities and salts in seawater by setting each filter tube with microfiltration membranes, ultrafiltration membranes and reverse osmosis membranes of different particle sizes, and finally produces high-quality fresh water, providing reliable water resources for human life and industrial production.

Description

Technical Field

[0001] The invention relates to the technical field of seawater filtration, and in particular to a multi-channel multi-particle diameter seawater membrane filtration system and a method thereof. Background Art

[0002] Seawater is the origin of life on Earth and one of the foundations of survival. The water content in marine organisms is as high as 70%, and seawater provides the environment for marine organisms to survive, reproduce and grow. Seawater participates in the hydrological cycle of the Earth, and affects the global climate and environment through evaporation, precipitation and surface runoff. Although the salinity of seawater is high, it can be converted into freshwater resources for drinking and irrigation through seawater desalination technology. Seawater filtration systems can convert seawater into freshwater that can be used for drinking, agricultural irrigation and industrial purposes. As the global water shortage problem becomes increasingly prominent, seawater filtration and desalination has become an effective means to solve the shortage of freshwater resources.

[0003] At present, the filtration method of the seawater filtration system is single, which cannot completely remove various impurities and pollutants in the seawater, thus affecting the treatment effect of the seawater. In addition, the single filtration method cannot improve the treatment effect of seawater, the cost is high, and the sustainability and stability of the system cannot be ensured. Therefore, a multi-channel and multi-particle size seawater membrane filtration system and method are proposed. Summary of the invention

[0004] In order to solve the problem that the equipment has a single filtering mode for seawater and cannot completely remove various impurities and pollutants in the seawater, the present invention provides a multi-channel multi-particle size seawater membrane filtering system and method thereof.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-channel multi-particle size seawater membrane filtration system, comprising a filter outer barrel, a filter inner barrel is fixedly installed near the center of the upper surface of the barrel bottom of the filter outer barrel, and a water adding tank is welded and fixed on the upper surface of the filter inner barrel, a water inlet pipe is plugged and fixed near one side of the circumferential outer wall of the water adding tank, and a mounting hole is opened at the center of the tank bottom of the water adding tank, a microfiltration tube is fixedly plugged and fixed on the circumferential inner wall of the mounting hole, and a pipe sleeve is fixedly sleeved near the bottom end of the circumferential outer wall of the microfiltration tube, and the middle of the microfiltration tube A microfiltration membrane is provided, and a partition mechanism is provided on the circumferential inner wall of the filter inner barrel, and the partition mechanism includes a first isolation plate. A sealing disk is welded to the circumferential outer wall of the filter inner barrel near the top, and the lower surface of the sealing disk is connected to the filter outer barrel near the circumferential edge, and a water injection mechanism is installed on the upper surface of the sealing disk near one side, and the water injection mechanism includes two water pipes, a rope spring is fixed to the bottom end of the filter outer barrel near the center of the circle, and a fixed block is fixed to the bottom end of the rope spring, an extension rope is bolted to the bottom end of the fixed block, and a counterweight is bolted to the bottom end of the extension rope.

[0006] A further configuration of the present invention is that the partition mechanism includes a first isolation plate, a first isolation plate is sealed and fixed to the circumferential inner wall of the filter inner barrel near the top, and a water pipe one is plugged and fixed to the upper surface of the first isolation plate at a point deviating from the center of the circle, a second isolation plate is sealed and fixed to the circumferential inner wall of the filter inner barrel near the middle, and an ultrafiltration tube two is plugged and fixed to the upper surface of the second isolation plate at a point deviating from the center of the circle, an ultrafiltration membrane is arranged in the middle of the ultrafiltration tube two, a third isolation plate is sealed and fixed to the circumferential inner wall of the filter inner barrel near the bottom end, and a fixing hole is opened on the upper surface of the third isolation plate at a point deviating from the center of the circle, a reverse osmosis ring two is clamped on the circumferential inner wall of the fixing hole, and a reverse osmosis membrane is fixed to the circumferential inner wall of the reverse osmosis ring two near the middle.

[0007] A further configuration of the present invention is that a fixing hole is opened on the side of the upper surface of the second isolation plate away from the ultrafiltration tube 2, and a reverse osmosis ring 1 is clamped on the circumferential inner wall of the fixing hole, a reverse osmosis membrane is fixed to the circumferential inner wall of the reverse osmosis ring 1 near the middle, and a water pipe 3 is welded to the bottom end of the reverse osmosis ring 1, and the bottom end of the water pipe 3 passes through the third isolation plate.

[0008] A further configuration of the present invention is that a sliding rod is welded and fixed to the upper surface of the first isolation plate near the side close to the water inlet pipe, and a sliding block is slidably connected to the circumferential outer wall of the sliding rod near the top, a floating block is fixed to the top of the sliding block, and the floating block passes through the water filling tank, a clamping hole is opened on the side close to the floating block at the bottom end of the water inlet pipe, and the clamping hole and the floating block match, a spiral tube is welded at the center of the bottom end of the water adding tank, and the spiral tube is connected to the microfiltration tube, and a liquefied top cover is fixed to the top of the water adding tank by bolts.

[0009] A further configuration of the present invention is that the water injection mechanism includes a second water pipe, the second water pipe is plugged and fixed on one side of the upper surface of the sealing disk near the center of the circle, and an ultrafiltration tube is installed and fixed in the middle of the second water pipe, an ultrafiltration membrane is fixed on the circumferential inner wall of the ultrafiltration tube, the circumferential outer wall of the filter inner barrel and the circumferential inner wall of the filter outer barrel form a second collecting chamber, and the second collecting chamber is connected to the bottom end of the second water pipe, and the top end of the second water pipe is connected to the circumferential edge of the bottom end of the water filling bin.

[0010] A further configuration of the present invention is that a surrounding ring is welded on the upper surface of the bottom of the water adding bin near the circumferential edge, and the circumferential outer wall of the surrounding ring and the circumferential inner wall of the water adding bin form a first collecting chamber, and the top end of the water supply pipe 2 is connected to the first collecting chamber.

[0011] A further configuration of the present invention is that a water spray rod is inserted and fixed on the circumferential outer wall of the filter inner barrel near the sealing disk, and one end of the water spray rod close to the filter outer barrel is connected to the second collecting chamber, and a water spray head is inserted and fixed on the end of the water spray rod away from the filter outer barrel, and the water spray head is inserted into the cavity of the second ultrafiltration tube.

[0012] A further configuration of the present invention is that a plurality of threaded holes are evenly opened on the upper surface of the sealing disk near the circumferential edge, and a plurality of threaded holes are threaded with screws, a plurality of the screws are rotatably connected to the circumferential outer walls with connecting blocks one, and a plurality of connecting blocks one are fixed with connecting plates by bolts on the side away from the filter inner barrel, a plurality of the connecting plates are connected to the top ends with connecting rods, and a plurality of the connecting rods are welded with fixing rings on the ends away from the connecting plates, and a same floating ring is fixed to the circumferential inner walls of a plurality of the fixing rings.

[0013] The present invention is further configured in that a water outlet pipe is inserted into the bottom end of the filter inner barrel at a position deviating from the center of the circle, and the water outlet pipe passes through the filter outer barrel, and fixing rods are evenly fixed on the upper surface of the bottom of the filter outer barrel near the circumferential edge, and the circumferential outer walls of the fixing rods are all sleeved and fixed with contraction springs, the top ends of several of the contraction springs are fixed with the same movable float, a mounting hole is opened at the top end of one of the fixing rods away from the water outlet pipe, and an air supply pipe is inserted and fixed to the mounting hole, the air supply pipe passes through the filter outer barrel, and an air supply pipe is installed at the end of the air supply pipe away from the filter outer barrel. A water suction pump is installed at one end of the water outlet pipe away from the filter outer barrel, a positioning rod is welded at the center of the upper surface of the filter inner barrel, and annular grooves are opened on the circumferential outer wall of the positioning rod near both ends, the annular groove near the top end is clamped and fixed with the induction ring 2, and the annular groove near the bottom end is clamped and fixed with the induction ring 1, the circumferential outer wall of the positioning rod is slidably connected with an induction floating ring near the middle, and the circumferential outer wall of the positioning rod is sleeved and fixed with an upper positioning plate near the top end, and the circumferential outer wall of the positioning rod is sleeved and fixed with a lower positioning plate near the bottom end.

[0014] A multi-channel multi-particle size seawater membrane filtration method comprises the following steps:

[0015] S1: First, according to the depth of the seawater, adjust the length of the extension rope so that the water inlet pipe of the equipment is submerged in the seawater and the liquefied top cover is kept above the water surface. At this time, the seawater flows into the water filling tank along the water inlet pipe. When the seawater in the water filling tank submerges the pipe sleeve, it is initially filtered by the microfiltration tube and then slowly flows into the filter inner barrel along the spiral tube. When the seawater height above the first isolation plate exceeds the water delivery pipe 1, the seawater flows to the space below along the water delivery pipe 1. When the seawater level above the first isolation plate contacts the floating block, the floating block rises with the seawater until it is completely inserted into the water inlet pipe, so that the external seawater stops flowing into the water filling tank;

[0016] S2: The seawater above the second isolation plate is filtered by the ultrafiltration tube 2 and flows to the third isolation plate. At the same time, part of the seawater is filtered by the reverse osmosis ring 1 and flows directly into the lowest end of the filter inner barrel along the water pipe 3. The seawater above the third isolation plate is filtered by the reverse osmosis ring 2 and flows into the lowest end of the filter inner barrel.

[0017] S3: When the weather is hot, part of the seawater in the water tank is evaporated, and the water vapor is liquefied when it meets the liquefied top cover, flows into the first collecting chamber along the liquefied top cover, and then flows along the water delivery pipe 2, and after being filtered by the ultrafiltration pipe 1, flows into the second collecting chamber, and the movable float slides downward under the action of the gravity of the water and the tension of the contraction spring;

[0018] S4: When the water level at the bottom of the filter inner barrel rises, the induction floating ring slides upward with the water level. When the induction floating ring and the second induction ring are at the same level, the water suction pump starts to work and pumps out the water at the bottom of the filter inner barrel. At the same time, the air pump starts to inflate the second collection chamber. When the water is pumped out, the induction floating ring drops to the same level as the first induction ring, and the water suction pump and the air pump are turned off at the same time.

[0019] S5: When the air pump starts to inflate the interior of the second collecting chamber, the air pressure at the bottom of the second collecting chamber is high, forcing the movable float to slide upward, squeezing the seawater along the water spraying rod into the water spraying head. The seawater flows out through the water spraying head at high speed, impacting the second ultrafiltration tube, cleaning the ultrafiltration membrane, and restoring its filtering performance.

[0020] In summary, the beneficial effects of this solution are:

[0021] 1. By setting up each filter tube with microfiltration membranes, ultrafiltration membranes and reverse osmosis membranes of different particle sizes, various impurities and salts in seawater are gradually filtered out, and finally high-quality fresh water is produced, providing reliable water resources for human life and industrial production.

[0022] 2. By setting a floating ring, the stability of the equipment can be ensured, the filtering efficiency of the equipment can be improved, the equipment can be prevented from tilting and inverting in the water, the damage to the equipment caused by impurities and particles can be reduced, the service life of the equipment can be extended, and the maintenance and replacement costs can be reduced.

[0023] 3. By setting up a water suction pump, the filtered fresh water can be extracted in time and delivered to the production link, which improves the operation efficiency and avoids equipment idleness. After the water suction pump extracts the fresh water, the original space forms a negative pressure, maintaining different pressures on both sides of the reverse osmosis membrane. The high pressure at the top allows water molecules to quickly overcome the osmotic pressure and pass through the reverse osmosis membrane, thereby increasing the output rate of fresh water, reducing blockage and pollution on the membrane surface, and extending the service life of the reverse osmosis membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a multi-channel and multi-particle size seawater membrane filtration system proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the top structure of a multi-channel and multi-particle size seawater membrane filtration system proposed by the present invention;

[0026] Figure 3A schematic diagram of a half-section structure of a multi-channel and multi-particle size seawater membrane filtration system proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the water adding tank structure of a multi-channel and multi-particle size seawater membrane filtration system proposed by the present invention;

[0028] Figure 5 A multi-channel multi-particle size seawater membrane filtration system proposed by the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0029] Figure 6 A schematic diagram of the internal structure of the upper end of a multi-channel multi-particle size seawater membrane filtration system proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the lower end of a multi-channel multi-particle size seawater membrane filtration system proposed by the present invention;

[0031] Figure 8 A multi-channel multi-particle size seawater membrane filtration system proposed by the present invention Figure 3 Enlarged structural diagram at B in the middle.

[0032] In the figure: 1, filter outer barrel; 2, water suction pump; 3, rope spring; 4, fixed block; 5, counterweight block; 6, extension rope; 7, air pump; 8, air pipe; 9, sealing plate; 10, connecting block 1; 11, connecting plate; 12, floating ring; 13, fixing ring; 14, connecting rod; 15, screw; 16, filter inner barrel; 17, liquefied top cover; 18, spiral tube; 19, water filling tank; 20, water pipe 1; 21, second isolation plate; 22, third isolation plate; 23, movable float; 24, first isolation plate; 25, surrounding ring; 26, first collecting chamber; 27. Microfiltration tube; 28. Pipe sleeve; 29. ​​Floating block; 30. Water inlet pipe; 31. Water pipe 2; 32. Ultrafiltration tube 1; 33. Sliding rod; 34. Sliding block; 35. Reverse osmosis ring 1; 36. Water pipe 3; 37. Contraction spring; 38. Water outlet pipe; 39. Fixing rod; 40. Positioning rod; 41. Reverse osmosis ring 2; 42. Water spraying rod; 43. Water spraying head; 44. Second collecting chamber; 45. Ultrafiltration tube 2; 46. Annular groove; 47. Lower positioning plate; 48. Induction ring 1; 49. Induction floating ring; 50. Upper positioning plate; 51. Induction ring 2. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In this embodiment, refer to Figure 1-8A multi-channel multi-particle size seawater membrane filtration system comprises a filter outer barrel 1, a filter inner barrel 16 is fixedly mounted on the upper surface of the bottom of the filter outer barrel 1 near the center, and a water adding tank 19 is welded and fixed on the upper surface of the filter inner barrel 16, a water inlet pipe 30 is plugged and fixed near one side of the circumferential outer wall of the water adding tank 19, and a mounting hole is opened at the center of the bottom of the water adding tank 19, a microfiltration tube 27 is fixedly plugged and fixed on the circumferential inner wall of the mounting hole, and a pipe sleeve 28 is sleeved and fixed near the bottom end of the circumferential outer wall of the microfiltration tube 27, a microfiltration membrane is arranged in the middle of the microfiltration tube 27, and a partition mechanism is arranged on the circumferential inner wall of the filter inner barrel 16, and the partition mechanism comprises the first An isolation plate 24 is provided. A sealing disk 9 is welded to the circumferential outer wall of the filter inner barrel 16 near the top, and the lower surface of the sealing disk 9 is connected to the filter outer barrel 1 near the circumferential edge. A water injection mechanism is installed on the upper surface of the sealing disk 9 near one side, and the water injection mechanism includes a water pipe 2 31. A rope spring 3 is fixed to the bottom end of the filter outer barrel 1 near the center of the circle, and a fixed block 4 is fixed to the bottom end of the rope spring 3. An extension rope 6 is bolted to the bottom end of the fixed block 4, and a counterweight 5 is bolted to the bottom end of the extension rope 6. Through the pipe sleeve 28 and the microfiltration tube 27, impurities such as large-sized suspended particles, sediment, algae and large organisms in seawater can be removed, making the water quality cleaner.

[0035] refer to Figure 3 , Figure 7 The partition mechanism includes a first isolation plate 24, a first isolation plate 24 is sealed and fixed near the top of the circumferential inner wall of the filter inner barrel 16, and a water pipe 20 is plugged and fixed at a position deviating from the center of the upper surface of the first isolation plate 24, a second isolation plate 21 is sealed and fixed near the middle of the circumferential inner wall of the filter inner barrel 16, and an ultrafiltration tube 2 45 is plugged and fixed at a position deviating from the center of the upper surface of the second isolation plate 21, an ultrafiltration membrane is arranged in the middle of the ultrafiltration tube 2 45, and a water pipe 20 is plugged and fixed at a position deviating from the center of the upper surface of the second isolation plate 21, and ... A third isolation plate 22 is fixed, and a fixing hole is opened on the upper surface of the third isolation plate 22 at a position deviating from the center of the circle, a reverse osmosis ring 2 41 is clamped on the circumferential inner wall of the fixing hole, and a reverse osmosis membrane is fixed on the circumferential inner wall of the reverse osmosis ring 2 41 near the middle; smaller suspended particles, bacteria, viruses, organic matter and colloids can be further removed through the ultrafiltration membrane, and salt, inorganic matter, heavy metals and other soluble impurities can be effectively removed through the reverse osmosis membrane, ensuring the production of clean, safe and drinkable fresh water resources.

[0036] refer to Figure 7 A fixing hole is opened on the side of the upper surface of the second isolation plate 21 away from the ultrafiltration tube 2 45, and a reverse osmosis ring 1 35 is clamped on the circumferential inner wall of the fixing hole, a reverse osmosis membrane is fixed near the middle of the circumferential inner wall of the reverse osmosis ring 1 35, and a water pipe 3 36 is welded to the bottom end of the reverse osmosis ring 1 35, and the bottom end of the water pipe 3 36 passes through the third isolation plate 22; by adding filtering channels with different filter diameters, particles and pollutants of different sizes can be dealt with, thereby improving the filtering efficiency.

[0037] refer to Figure 4 , Figure 6 A slide bar 33 is welded and fixed on the upper surface of the first isolation plate 24 near the side close to the water inlet pipe 30, and a slider 34 is slidably connected to the circumferential outer wall of the slide bar 33 near the top, a float block 29 is fixed to the top of the slider 34, and the float block 29 passes through the water adding tank 19, and a clamping hole is opened on the side close to the float block 29 at the bottom end of the water inlet pipe 30, and the clamping hole and the float block 29 match, a spiral tube 18 is welded at the center of the bottom end of the water adding tank 19, and the spiral tube 18 is connected to the microfiltration tube 27, and a liquefied top cover 17 is fixed to the top of the water adding tank 19 by bolts; by setting the liquefied top cover 17, the evaporated and filtered seawater can be collected, and the collection rate of fresh water can be accelerated.

[0038] refer to Figure 5 , Figure 6 , Figure 7 The water injection mechanism includes a water delivery pipe 31, a water delivery pipe 31 is inserted and fixed on one side of the upper surface of the sealing disk 9 near the center of the circle, and an ultrafiltration pipe 32 is installed and fixed in the middle of the water delivery pipe 31, and an ultrafiltration membrane is fixed on the circumferential inner wall of the ultrafiltration pipe 32. The circumferential outer wall of the filter inner barrel 16 and the circumferential inner wall of the filter outer barrel 1 form a second collecting chamber 44, and the second collecting chamber 44 is connected to the bottom end of the water delivery pipe 31, and the top of the water delivery pipe 31 is connected to the circumferential edge of the bottom end of the water adding bin 19, and a surrounding ring 25 is welded on the upper surface of the bin bottom of the water adding bin 19 near the circumferential edge, and the circumferential outer wall of the surrounding ring 25 and the adding bin 19 are connected. The circumferential inner wall of the water tank 19 forms a first collecting chamber 26, the top of the water pipe 31 is connected to the first collecting chamber 26, and a water spray rod 42 is inserted and fixed to the circumferential outer wall of the filter inner barrel 16 near the sealing disk 9, and the end of the water spray rod 42 close to the filter outer barrel 1 is connected to the second collecting chamber 44, and a water spray head 43 is inserted and fixed to the end of the water spray rod 42 away from the filter outer barrel 1, and the water spray head 43 is inserted into the cavity of the ultrafiltration tube 45; by setting the water spray head 43, the filtered water in the second collecting chamber 44 can flush the ultrafiltration tube 45, clean the ultrafiltration membrane, restore its filtration performance, and improve the service life of the ultrafiltration membrane.

[0039] refer to Figure 1A plurality of threaded holes are evenly opened on the upper surface of the sealing disk 9 near the circumferential edge, and the plurality of threaded holes are screwed with screws 15, the circumferential outer walls of the plurality of screws 15 are rotatably connected with connecting blocks 10, and the side of the plurality of connecting blocks 10 away from the filtering inner barrel 16 is fixed with connecting plates 11 by bolts, the tops of the plurality of connecting plates 11 are plugged with connecting rods 14, and the ends of the plurality of connecting rods 14 away from the connecting plates 11 are welded with fixing rings 13, and the circumferential inner walls of the plurality of fixing rings 13 are fixed with the same floating rings 12; by setting the floating rings 12, the center of gravity of the equipment is not shifted, the stability of the equipment is ensured, the filtering efficiency of the equipment is improved, the equipment is prevented from tilting and inverting in the water, the damage to the equipment by impurities and particles is reduced, the service life of the equipment is extended, and the maintenance and replacement costs are reduced.

[0040] refer to Figure 7 , Figure 8 , a water outlet pipe 38 is inserted at the bottom end of the filter inner barrel 16 at a position deviating from the center of the circle, and the water outlet pipe 38 passes through the filter outer barrel 1, and fixing rods 39 are evenly fixed on the upper surface of the bottom of the filter outer barrel 1 near the circumferential edge, and the circumferential outer walls of the fixing rods 39 are sleeved and fixed with contraction springs 37, and the tops of several contraction springs 37 are fixed with the same movable float 23, and a mounting hole is opened at the top of a fixing rod 39 away from the water outlet pipe 38, and an air supply pipe 8 is inserted and fixed in the mounting hole, and the air supply pipe 8 passes through the filter outer barrel 1, and an air pump 7 is installed at one end of the air supply pipe 8 away from the filter outer barrel 1, and a water suction pump 2 is installed at one end of the water outlet pipe 38 away from the filter outer barrel 1, and a positioning rod 40 is welded at the center of the upper surface of the filter inner barrel 16, and the ... Annular grooves 46 are provided on the circumferential outer wall of the rod 40 near both ends, an induction ring 2 51 is snap-fitted and fixed to the annular groove 46 near the top, and an induction ring 1 48 is snap-fitted and fixed to the annular groove 46 near the bottom, an induction floating ring 49 is slidably connected to the circumferential outer wall of the positioning rod 40 near the middle, an upper positioning plate 50 is sleeved and fixed to the circumferential outer wall of the positioning rod 40 near the top, and a lower positioning plate 47 is sleeved and fixed to the circumferential outer wall of the positioning rod 40 near the bottom; by setting a movable float 23, under the action of the gravity of water and the pulling force of the contraction spring 37, the movable float 23 slides downward, and the pressure in the upper half of the second collecting chamber 44 is reduced, so that water can pass through the ultra-permeable membrane more easily under the action of pressure, thereby accelerating the filtration speed.

[0041] A multi-channel multi-particle size seawater membrane filtration method comprises the following steps:

[0042] S1: First, according to the depth of the seawater, adjust the length of the extension rope 6 so that the water inlet pipe 30 of the equipment is submerged in the seawater, and the liquefied top cover 17 is kept above the water surface. At this time, the seawater flows into the water filling tank 19 along the water inlet pipe 30. When the seawater in the water filling tank 19 submerges the pipe sleeve 28, it is initially filtered by the microfiltration tube 27 and then slowly flows into the filter inner barrel 16 along the spiral tube 18. When the seawater height above the first isolation plate 24 exceeds the water delivery pipe 20, the seawater flows to the space below along the water delivery pipe 20. When the seawater level above the first isolation plate 24 contacts the floating block 29, the floating block 29 rises with the seawater until it is completely inserted into the water inlet pipe 30, so that the external seawater stops flowing into the water filling tank 19.

[0043] S2: The seawater above the second isolation plate 21 is filtered by the second ultrafiltration tube 45 and flows to the third isolation plate 22. At the same time, part of the seawater is filtered by the first reverse osmosis ring 35 and flows directly along the third water pipe 36 to the lowest end of the filter inner barrel 16. The seawater above the third isolation plate 22 is filtered by the second reverse osmosis ring 41 and flows into the lowest end of the filter inner barrel 16.

[0044] S3: When the weather is hot, part of the seawater in the water tank 19 is evaporated, and the water vapor is liquefied when it meets the liquefied top cover 17, flows into the first collecting chamber 26 along the liquefied top cover 17, and then flows along the water delivery pipe 2 31, and after being filtered by the ultrafiltration pipe 1 32, flows into the second collecting chamber 44, and the movable float 23 slides downward under the action of the gravity of the water and the tension of the contraction spring 37;

[0045] S4: When the water level at the bottom of the filter inner barrel 16 rises, the induction floating ring 49 slides upward with the water level. When the induction floating ring 49 and the induction ring 2 51 are at the same level, the water suction pump 2 starts to work and pumps out the water at the bottom of the filter inner barrel 16. At the same time, the air pump 7 starts to inflate the second collection chamber 44. When the water is pumped out, the induction floating ring 49 drops to the same level as the induction ring 1 48, and the water suction pump 2 and the air pump 7 are turned off at the same time.

[0046] S5: When the air pump 7 starts to inflate the interior of the second collecting chamber 44, the air pressure at the bottom of the second collecting chamber 44 is high, forcing the movable float 23 to slide upward, squeezing the seawater along the water spraying rod 42 into the water spraying head 43, and the seawater flows out at a high speed through the water spraying head 43, impacting the ultrafiltration tube 2 45, cleaning the ultrafiltration membrane, and restoring its filtering performance.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-channel multi-particle size seawater membrane filtration system, comprising a filtration outer barrel (1), characterized in that: A filter inner barrel (16) is fixedly mounted on the upper surface of the bottom of the filter outer barrel (1) near the center, and a water filling tank (19) is welded and fixedly mounted on the upper surface of the filter inner barrel (16); a water inlet pipe (30) is plugged and fixedly mounted on the circumferential outer wall of the water filling tank (19) near one side of the filter inner barrel (16); a mounting hole is provided at the center of the bottom of the water filling tank (19); a microfiltration tube (27) is plugged and fixedly mounted on the circumferential inner wall of the mounting hole; a tube sleeve (28) is sleeved and fixedly mounted on the circumferential outer wall of the microfiltration tube (27) near the bottom end; a microfiltration membrane is provided in the middle of the microfiltration tube (27); and a partition is provided on the circumferential inner wall of the filter inner barrel (16). The filter inner barrel (16) is provided with a sealing plate (9) welded to the outer wall of the circumference near the top, and the lower surface of the sealing plate (9) is connected to the filter outer barrel (1) near the circumferential edge, and a water injection mechanism is installed on the upper surface of the sealing plate (9) near one side of the filter inner barrel (16), and the water injection mechanism includes a second water delivery pipe (31), a rope spring (3) is fixed to the bottom end of the filter outer barrel (1) near the center of the circle, and a fixed block (4) is fixed to the bottom end of the rope spring (3), an extension rope (6) is bolted to the bottom end of the fixed block (4), and a counterweight (5) is bolted to the bottom end of the extension rope (6); A liquefaction top cover (17) is fixed to the top of the water filling tank (19) by bolts; A second isolation plate (21) is sealed and fixed to the inner wall of the circumference of the filtering inner barrel (16) near the middle, and a second ultrafiltration tube (45) is inserted and fixed to the upper surface of the second isolation plate (21) at a position offset from the center of the circle; The water injection mechanism comprises a second water delivery pipe (31), the second water delivery pipe (31) is inserted and fixed on one side of the upper surface of the sealing disk (9) near the center of the circle, and an ultrafiltration pipe (32) is installed and fixed in the middle of the second water delivery pipe (31), and an ultrafiltration membrane is fixed on the circumferential inner wall of the ultrafiltration pipe (32), the circumferential outer wall of the filter inner barrel (16) and the circumferential inner wall of the filter outer barrel (1) form a second collecting chamber (44), and the second collecting chamber (44) is connected to the bottom end of the second water delivery pipe (31), and the top end of the second water delivery pipe (31) is connected to the circumferential edge of the bottom end of the water filling tank (19); the upper surface of the bottom of the water filling tank (19) A surrounding ring (25) is welded near the circumferential edge, and the circumferential outer wall of the surrounding ring (25) and the circumferential inner wall of the water filling bin (19) form a first collecting chamber (26), and the top end of the second water delivery pipe (31) is connected to the first collecting chamber (26); a water spraying rod (42) is inserted and fixed to the circumferential outer wall of the filter inner barrel (16) near the sealing disk (9), and one end of the water spraying rod (42) close to the filter outer barrel (1) is connected to the second collecting chamber (44), and a water spraying head (43) is inserted and fixed to the end of the water spraying rod (42) away from the filter outer barrel (1), and the water spraying head (43) is inserted into the cavity of the second ultrafiltration tube (45); The water vapor is liquefied upon encountering the liquefied top cover (17), and flows into the first collecting chamber (26) along the liquefied top cover (17).

2. A multi-channel multi-particle size seawater membrane filtration system according to claim 1, characterized in that: The partition mechanism comprises a first isolation plate (24), the first isolation plate (24) is sealed and fixed to the circumferential inner wall of the filter inner barrel (16) near the top, and a water pipe (20) is inserted and fixed to the upper surface of the first isolation plate (24) at a position offset from the center of the circle, an ultrafiltration membrane is arranged in the middle of the second ultrafiltration tube (45), a third isolation plate (22) is sealed and fixed to the circumferential inner wall of the filter inner barrel (16) near the bottom, and a fixing hole is opened on the upper surface of the third isolation plate (22) at a position offset from the center of the circle, a reverse osmosis ring (41) is clamped to the circumferential inner wall of the fixing hole, and a reverse osmosis membrane is fixed to the circumferential inner wall of the reverse osmosis ring (41) near the middle.

3. A multi-channel multi-particle size seawater membrane filtration system according to claim 2, characterized in that: A fixing hole is formed on the upper surface of the second isolation plate (21) at a side away from the second ultrafiltration tube (45), and a reverse osmosis ring (35) is clamped on the circumferential inner wall of the fixing hole. A reverse osmosis membrane is fixed to the circumferential inner wall of the reverse osmosis ring (35) near the middle, and a water pipe (36) is welded to the bottom end of the reverse osmosis ring (35), and the bottom end of the water pipe (36) passes through the third isolation plate (22).

4. A multi-channel multi-particle size seawater membrane filtration system according to claim 3, characterized in that: A sliding rod (33) is welded and fixed on the upper surface of the first isolation plate (24) near the water inlet pipe (30), and a slider (34) is slidably connected to the circumferential outer wall of the sliding rod (33) near the top end, and a floating block (29) is fixed to the top end of the slider (34), and the floating block (29) passes through the water filling tank (19). A clamping hole is opened on the side of the bottom end of the water inlet pipe (30) near the floating block (29), and the clamping hole and the floating block (29) match each other. A spiral tube (18) is welded at the center of the bottom end of the water filling tank (19), and the spiral tube (18) and the microfiltration tube (27) are connected.

5. The multi-channel multi-particle size seawater membrane filtration system according to claim 4, characterized in that: A plurality of threaded holes are evenly formed on the upper surface of the sealing disk (9) near the circumferential edge, and screw rods (15) are screwed to the plurality of threaded holes, the circumferential outer walls of the plurality of screw rods (15) are rotatably connected to connecting blocks (10), and the sides of the plurality of connecting blocks (10) away from the filter inner barrel (16) are fixed with connecting plates (11) by bolts, the top ends of the plurality of connecting plates (11) are plugged with connecting rods (14), and the ends of the plurality of connecting rods (14) away from the connecting plates (11) are welded with fixing rings (13), and the circumferential inner walls of the plurality of fixing rings (13) are fixed with the same floating ring (12).

6. A multi-channel multi-particle size seawater membrane filtration system according to claim 5, characterized in that: A water outlet pipe (38) is inserted at a position deviating from the center of the bottom of the filter inner barrel (16), and the water outlet pipe (38) passes through the filter outer barrel (1). Fixed rods (39) are evenly fixed on the upper surface of the bottom of the filter outer barrel (1) near the circumferential edge, and the circumferential outer walls of the fixed rods (39) are sleeved and fixed with contraction springs (37). The top ends of several contraction springs (37) are fixed with the same movable float (23). A mounting hole is formed at the top end of one of the fixed rods (39) away from the water outlet pipe (38), and an air supply pipe (8) is inserted and fixed in the mounting hole. The air supply pipe (8) passes through the filter outer barrel (1), and an air pump (7) is installed at one end of the air supply pipe (8) away from the filter outer barrel (1). The water outlet pipe (39) is provided with a plurality of movable floats (23). 8) A water suction pump (2) is installed at one end away from the filter outer barrel (1), a positioning rod (40) is welded at the center of the upper surface of the filter inner barrel (16), and an annular groove (46) is opened on the circumferential outer wall of the positioning rod (40) near both ends, the annular groove (46) near the top end is clamped and fixed with an induction ring 2 (51), and the annular groove (46) near the bottom end is clamped and fixed with an induction ring 1 (48), the circumferential outer wall of the positioning rod (40) near the middle is slidably connected with an induction floating ring (49), and the circumferential outer wall of the positioning rod (40) near the top end is sleeved and fixed with an upper positioning plate (50), and the circumferential outer wall of the positioning rod (40) near the bottom end is sleeved and fixed with a lower positioning plate (47).

7. A multi-channel multi-particle size seawater membrane filtration method, comprising a multi-channel multi-particle size seawater membrane filtration system as claimed in claim 6, characterized in that: The following steps are involved: S1: First, according to the depth of the seawater, the length of the extension rope (6) is adjusted so that the water inlet pipe (30) of the equipment is submerged in the seawater and the liquefied top cover (17) is kept above the water surface. At this time, the seawater flows into the water filling tank (19) along the water inlet pipe (30). When the seawater in the water filling tank (19) submerges the pipe sleeve (28), it is initially filtered by the microfiltration tube (27) and then slowly flows into the filter inner barrel (16) along the spiral tube (18). When the height of the seawater above the first isolation plate (24) exceeds the water delivery pipe 1 (20), the seawater flows along the water delivery pipe 1 (20) to the space below. When the seawater level above the first isolation plate (24) contacts the floating block (29), the floating block (29) rises with the seawater until it is completely inserted into the water inlet pipe (30), so that the external seawater stops flowing into the water filling tank (19); S2: The seawater above the second isolation plate (21) is filtered by the second ultrafiltration tube (45) and then flows to the third isolation plate (22). At the same time, part of the seawater is filtered by the first reverse osmosis ring (35) and then flows directly along the third water pipe (36) into the lowest end of the filter inner barrel (16). The seawater above the third isolation plate (22) is filtered by the second reverse osmosis ring (41) and then flows into the lowest end of the filter inner barrel (16); S3: When the weather is hot, part of the seawater in the water adding tank (19) is evaporated, and then flows along the second water delivery pipe (31), is filtered by the first ultrafiltration pipe (32), and flows into the second collection chamber (44). The movable float (23) slides downward under the action of the gravity of the water and the tension of the contraction spring (37); S4: When the water level at the bottom of the filter inner barrel (16) rises, the induction floating ring (49) slides upward with the water level. When the induction floating ring (49) and the second induction ring (51) are at the same level, the water suction pump (2) starts to work and pumps out the water at the bottom of the filter inner barrel (16). At the same time, the air pump (7) starts to inflate the interior of the second collection chamber (44). When the water is completely pumped out, the induction floating ring (49) drops to the same level as the first induction ring (48), and the water suction pump (2) and the air pump (7) are turned off at the same time. S5: When the air pump (7) is started to inflate the interior of the second collecting chamber (44), the air pressure at the bottom of the second collecting chamber (44) is high, forcing the movable float (23) to slide upward, squeezing the seawater along the water spraying rod (42) into the water spraying head (43), and the seawater flows out at a high speed through the water spraying head (43), impacting the second ultrafiltration tube (45), cleaning the ultrafiltration membrane, and restoring its filtering performance.

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