Reverse osmosis filtering device

Abstract

The invention relates to the technical field of reverse osmosis filtering, in particular to a reverse osmosis filtering device which comprises an outer barrel, the outer surface of the outer barrel is fixedly connected with a water inlet pipe, the upper end of the outer barrel is fixedly connected with a water pumping pipe, the inner end of the outer barrel is fixedly provided with an isolation barrel, and the bottom end of the isolation barrel is fixedly connected with a suction barrel. A diversion sleeve is fixedly connected to the bottom end of the suction barrel, a plurality of injection pipes are fixedly mounted on the outer surface of the diversion sleeve, a supporting ring is fixedly connected to the inner end of the isolation barrel, a reverse osmosis net for filtering is fixedly connected to the inner end of the supporting ring, and a communicating sleeve is connected to the end, close to the supporting ring, of the water pumping pipe; a waterproof base material is directly injected into the on-off barrel through the feeding pipe, and automatic coating of the waterproof base material on the inner walls of the isolation barrel and the suction barrel is achieved through a multi-stage distribution mechanism of the on-off sleeve, the flow guide pipe, the injection pipe and the driving pipe, so that a stable covering layer can be formed under the matching effect of the spraying pipe and the material uniformizing ring; and the uniformity of the anticorrosive coating is improved.

Description

Technical Field

[0001] This invention relates to the field of reverse osmosis filtration technology, specifically to a reverse osmosis filtration device. Background Technology

[0002] Reverse osmosis filtration is a device that uses a semi-permeable membrane to separate and purify dissolved impurities in water. It is widely used in drinking water purification, industrial water preparation, and seawater desalination. Reverse osmosis technology applies pressure higher than the osmotic pressure of the solution to the inlet side, allowing water molecules to pass through the reverse osmosis membrane, while dissolved salts, bacteria, organic matter, and other impurities are retained, thereby obtaining high-purity water.

[0003] During long-term operation, the internal structures of reverse osmosis filtration devices, such as the isolation cylinder and suction cylinder, are in constant contact with raw water containing salt and corrosive substances, making them highly susceptible to internal wall corrosion and coating peeling. To ensure filtration efficiency and equipment sealing, it is necessary to periodically apply anti-corrosion coating or repair to the internal walls. Existing filtration devices generally use manual disassembly of the isolation cylinder or manual entry into the bottom space of the equipment for manual coating to complete maintenance operations. However, due to the small internal space and complex internal structure of the equipment, manual operation is difficult and often requires two or more people to complete, resulting in high labor intensity and significant safety risks. In addition, manual coating is limited by the operating environment, making it difficult to guarantee the consistency and density of the coating, which can easily lead to uneven coverage or localized missed coating, resulting in unstable anti-corrosion effect. Therefore, this application proposes a reverse osmosis filtration device. Summary of the Invention

[0004] The purpose of this invention is to provide a reverse osmosis filtration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reverse osmosis filtration device, comprising an outer barrel, an inlet pipe fixedly connected to the outer surface of the outer barrel, a suction pipe fixedly connected to the upper end of the outer barrel, an isolation cylinder fixedly installed at the inner end of the outer barrel, and a suction cylinder fixedly connected to the bottom end of the isolation cylinder, wherein the height of the inlet pipe corresponds to the bottom end of the suction cylinder, a diversion sleeve fixedly connected to the bottom end of the suction cylinder, and multiple spray pipes fixedly installed on the outer surface of the diversion sleeve, the spray pipes being used to spray waterproof base material circumferentially onto the diversion sleeve to form a protective layer on the surface of the diversion sleeve, thereby improving the corrosion resistance of the diversion sleeve in a chemically containing environment, a support ring fixedly connected to the inner end of the isolation cylinder, a reverse osmosis mesh for filtration fixedly connected to the inner end of the support ring, a connecting sleeve fixedly connected to the end of the suction pipe near the support ring, the connecting sleeve being fixedly connected to the reverse osmosis mesh, a feeding pipe passing through the inner side of the connecting sleeve, a distribution sleeve fixedly connected to the upper end of the diversion sleeve, and multiple drive pipes fixedly connected to the outer surface of the distribution sleeve.

[0006] As a further embodiment of the present invention, the inner end of the diversion sleeve is provided with multiple guide grooves, each guide groove is connected to a corresponding spray pipe, and all guide grooves are fluidly connected to the distribution sleeve, for uniformly guiding the waterproof base material into the spray pipe. The outer side of the reverse osmosis mesh is provided with a material equalization ring, and the side wall of the drive pipe is provided with a rectangular sliding hole. By providing multiple guide grooves connected to the spray pipe at the inner end of the diversion sleeve and making them fluidly connected to the distribution sleeve, the waterproof base material can be uniformly distributed into the interior of each spray pipe, improving the stability and consistency of the spraying process, thereby making the coverage of the coating area more uniform.

[0007] As a further embodiment of the present invention, a movable ring is fitted inside the drive tube, and the movable ring passes through a rectangular sliding hole and is fixedly connected to the material leveling ring, so that the material leveling ring can move synchronously with the movable ring. A spraying pipe is fixedly connected to the bottom end of the support ring, and the spraying pipe is fixedly connected to the drive tube, for further diffusion and spraying onto the inner wall of the isolation cylinder after the waterproof base material enters. By fitting a movable ring inside the drive tube and fixing the movable ring through a rectangular sliding hole to the material leveling ring, the material leveling ring can move synchronously under the drive of the movable ring, thereby improving the uniformity of the distribution of the waterproof base material on the inner wall of the isolation cylinder.

[0008] As a further embodiment of the present invention, a central tube is inserted inside the reverse osmosis mesh. The upper end of the central tube is detachably connected to the feed pipe. A switch cylinder is fixedly connected to the bottom end of the central tube. An isolation cover is provided below the switch cylinder. Multiple guide pipes are fixedly connected to the upper end of the isolation cover. The free ends of each guide pipe are respectively connected to the switch cylinder. The isolation cover is fixedly connected to the distribution sleeve.

[0009] As a further embodiment of the present invention, a plurality of pressure-bearing bladders are fixedly connected to the surface of the central tube. The surface of the pressure-bearing bladders is in contact with the inner wall of the reverse osmosis mesh. When the pumping pipe starts pumping water, the water flow first passes through the reverse osmosis mesh and acts directly on the surface of the pressure-bearing bladders. Under the pressure of the water flow, the pressure-bearing bladders are squeezed and deformed.

[0010] As a further embodiment of the present invention, an inner tube is fixedly installed inside the central tube, and multiple auxiliary rings are sleeved on the outer side of the inner tube. Multiple conductive rods are rotatably installed on the surface of the auxiliary rings. The conductive rods are arranged in a ring shape, and a top plate is rotatably installed on the end of the conductive rod away from the auxiliary ring. The inner tube is connected to the through-and-off cylinder.

[0011] As a further embodiment of the present invention, a guide rod is provided between the top plate and the auxiliary ring. The guide rod passes through the inside of the transmission rod, and multiple protrusions are fixedly installed on the surface of the guide rod. Each protrusion is located above the guide rod. By setting a guide rod between the top plate and the auxiliary ring and making the guide rod pass through the inside of the transmission rod, the axial movement of the transmission mechanism can be effectively constrained, thereby ensuring that the movement path of the internal linkage structure is stable and reliable.

[0012] As a further embodiment of the present invention, a guide tube is fixedly installed at the inner end of the inner tube, and a passive plug is sleeved on the surface of the guide tube, with the surface of the passive plug fitting against the inner wall of the inner tube. The passive plug and the inner tube are connected by a return spring. By fixing the guide tube at the inner end of the inner tube and sleeved the passive plug on the surface of the guide tube with the inner wall of the inner tube, the passive plug can respond instantly to the waterproof base material or fluid entering the inner tube, thereby achieving effective control of the flow channel closure or opening.

[0013] As a further embodiment of the present invention, a truncated shell is fixedly installed at the upper end of the central tube, a sealing ring is fixedly installed at the inner end of the truncated shell, and the upper input end of the guide tube is exposed on the surface of the truncated shell. Multiple guide plates are provided at the bottom end of the truncated shell, and the guide plates are connected to the truncated shell by guide springs.

[0014] As a further embodiment of the present invention, a support plate is fixedly installed at the inner end of the cross-section shell, a drive ring is rotatably installed at the upper end of the support plate, an auxiliary rod is rotatably installed at the end of the guide plate, the end of the auxiliary rod is rotatably connected to the drive ring, and a plurality of extrusion blocks are provided between the drive ring and the sealing ring. The extrusion blocks are arranged in a ring shape and are slidably connected to the support plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a feeding pipe to directly inject waterproof base material into the inside of the switching cylinder. Through a multi-stage distribution mechanism consisting of a switching sleeve, a guide pipe, a spray pipe, and a drive pipe, the waterproof base material is automatically coated on the inner walls of the isolation cylinder and the suction cylinder. Since the waterproof base material is viscous, it can form a stable covering layer under the combined action of the spray pipe and the uniform ring, significantly improving the density and uniformity of the anti-corrosion coating. 2. The present invention realizes automatic opening and closing control of the sealing ring in the pumping and shutdown states through the linkage mechanism composed of the force-bearing bladder, push plate, transmission rod, guide rod and drive ring. This allows the device to automatically switch between normal filtration and coating maintenance without the need for operators to disassemble the isolation cylinder or contact the inner wall, which significantly improves the safety and convenience of maintenance operations. 3. Through the reset structure of the guide plate and the guide spring, the present invention can automatically reset the drive ring and clamp the extrusion block to the sealing ring after the filtration stops, thereby preventing the waterproof base material from overflowing from the feeding path when the machine is stopped, improving the sealing reliability and eliminating the risk of secondary pollution. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a reverse osmosis filtration device; Figure 2 This is a schematic diagram of the internal structure of a reverse osmosis filtration device; Figure 3 This is a schematic diagram of the internal structure of the isolation cylinder; Figure 4 This is an enlarged structural diagram of the inside of the isolation cylinder; Figure 5 A schematic diagram of the structure when the distribution sleeve is separated from the reverse osmosis mesh; Figure 6 This is a schematic diagram of the internal structure of the distribution sleeve; Figure 7 This is a schematic diagram of the internal structure of the drive tube; Figure 8 This is a schematic diagram of the connection between the feeding pipe and the central pipe; Figure 9 This is a partial structural schematic diagram of the cross-section of the through-and-break cylinder; Figure 10 This is a schematic diagram of the internal structure of the through-switching sleeve; Figure 11 This is a schematic diagram of the internal structure of the central tube; Figure 12 This is a schematic diagram of the push plate structure; Figure 13 This is a schematic diagram of the internal structure of the inner tube; Figure 14 This is a schematic diagram of the internal structure of the cross-section shell.

[0017] In the diagram: 1. Outer drum; 2. Feeding pipe; 3. Water suction pipe; 4. Water inlet pipe; 101. Isolation cylinder; 102. Suction cylinder; 103. Injection pipe; 104. Diverter sleeve; 105. Flow guide channel; 201. Connecting sleeve; 202. Support ring; 203. Reverse osmosis mesh; 204. Central tube; 205. Force-receiving bladder; 206. Inner tube; 207. Push plate; 208. Guide rod; 209. Conducting rod; 210. Top plate; 211. Auxiliary ring; 212. Guide tube; 213. Passive plug; 214. Return spring; 301. Distribution sleeve; 302. Drive tube; 303. Spray tube; 304. Switch cylinder; 305. Isolation cover; 306. Guide tube; 307. Quantifying ring; 308. Force-bearing sleeve; 309. Movable ring; 310. Passive rod; 311. Switch sleeve; 312. Triangular top plate; 313. Force-bearing rod; 314. Tensioning rod; 315. Guide rod; 401. Sectional shell; 402. Support plate; 403. Guide plate; 404. Drive ring; 405. Sealing ring; 406. Extrusion block; 407. Auxiliary rod; 408. Guide spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1-4 A reverse osmosis filtration device includes an outer barrel 1, an inlet pipe 4 fixedly connected to the outer surface of the outer barrel 1, a suction pipe 3 fixedly connected to the upper end of the outer barrel 1, an isolation cylinder 101 fixedly installed at the inner end of the outer barrel 1, and a suction cylinder 102 fixedly welded to the bottom end of the isolation cylinder 101. The height of the inlet pipe 4 corresponds to the bottom end of the suction cylinder 102. Therefore, after entering the outer barrel 1 from the inlet pipe 4, when the water level rises to the bottom end of the suction cylinder 102, the liquid can be promptly drawn into the suction cylinder 102, avoiding the raw water from staying in the outer barrel 1 for too long and affecting the filtration efficiency, and avoiding excessive contact between the sewage purification solution mixture and the surface of the suction cylinder 102, which would increase the corrosion area. A diversion sleeve 104 is fixedly connected to the bottom end of the suction cylinder 102. Multiple spray pipes 103 are fixedly installed on the outer surface of the diversion sleeve 104. The spray pipes 103 are used to spray waterproof base material around the diversion sleeve 104 to form a protective layer on the surface of the diversion sleeve 104, thereby improving the corrosion resistance of the diversion sleeve 104 in a chemical environment and extending the service life of the device. It is worth noting that the surface of the spray pipes 103 does not contact the diversion sleeve 104, and sewage can enter the interior of the isolation cylinder 101 from the diversion sleeve 104. A support ring 202 is fixedly connected to the inner end of the isolation cylinder 101. A reverse osmosis mesh 203 for filtration is fixedly connected to the inner end of the support ring 202. The reverse osmosis mesh 203 uses existing mature membrane materials and can perform deep filtration of the pumped liquid. Details will not be elaborated here. A connecting sleeve 201 is fixedly connected to one end of the pumping pipe 3 near the support ring 202. The connecting sleeve 201 is fixedly connected to the reverse osmosis mesh 203. A feed pipe 2 is inserted through the inner side of the connecting sleeve 201. The output end of the feed pipe 2 is located inside the reverse osmosis mesh 203, and the input end of the feed pipe 2 is exposed on the outer surface of the pumping pipe 3 (e.g., Figure 3 As shown, a distribution sleeve 301 is fixedly connected to the upper end of the diversion sleeve 104. Multiple drive pipes 302 are fixedly connected to the outer surface of the distribution sleeve 301. The drive pipes 302 are arranged in a ring shape to achieve uniform distribution of fluid inside the distribution sleeve 301 and improve the stability of the overall filtration flow field.

[0020] like Figures 4-7As shown, the inner end of the diversion sleeve 104 is provided with multiple guide grooves 105, each guide groove 105 is connected to the corresponding spray pipe 103, and all guide grooves 105 are in fluid communication with the distribution sleeve 301, which is used to uniformly guide the waterproof base material into the spray pipe 103. The outer side of the reverse osmosis mesh 203 is provided with a uniform ring 307, and multiple drive pipes 302 are arranged in the internal space of the uniform ring 307. The outer surface of the uniform ring 307 and the inner wall of the isolation cylinder 101 are kept in a gap and do not make direct contact. The side wall of the drive pipe 302 is provided with a rectangular sliding hole, and the inner end of the drive pipe 302 is fitted with a movable ring 309. The movable ring 309 passes through the rectangular sliding hole and is fixedly connected to the uniform ring 307, so that the uniform ring 307 can move synchronously with the movable ring 309. The bottom end of the support ring 202 is fixedly connected to a spray pipe 303, which is fixedly connected to the drive pipe 302 and is used to further diffuse and spray the waterproof base material to the inner wall of the isolation cylinder 101 after it enters. Specifically, the waterproof base material uses water glass (sodium silicate solution) as the anti-corrosion coating material. Its physical form is a viscous state similar to dilute glue. The inner end of the movable ring 309 is fixedly connected to the force-bearing sleeve 308, which is made of EPDM rubber material. It has excellent corrosion resistance and a certain degree of elasticity. A through hole is opened in the center, which increases the force-bearing area and improves the stress stability of the overall structure. When the viscous waterproof base material is injected into the drive tube 302, due to the high viscosity of the waterproof base material itself, it will not flow out of the rectangular sliding hole in large quantities. Instead, as the amount of base material inside increases, it gradually pushes the movable ring 309 to move upward, thereby driving the uniform ring 307 to rise synchronously along the axial direction of the drive tube 302. It should be noted that the gap of the rectangular sliding hole is small. Even if a small amount of base material seeps out during the rising process of the uniform ring 307, it will not affect the rising force of the movable ring 309. The outer surface of the spray pipe 303 is fixedly connected with multiple nozzles, each nozzle facing the inner wall of the isolation cylinder 101. When the movable ring 309 moves up to the top position of the drive pipe 302, the waterproof base material enters the interior of the spray pipe 303 through the central hole of the movable ring 309 and is sprayed out from each nozzle under continuous feeding, thereby achieving radial spraying of the inner wall of the isolation cylinder 101. At the same time, a small amount of waterproof base material will also overflow from the rectangular sliding hole of the drive pipe 302, making the spraying more uniform. When the sprayed waterproof base material flows downward along the inner wall of the isolation cylinder 101, the uniform material ring 307 is located in the upper area of ​​the isolation cylinder 101. Its surface can briefly intercept the flowing viscous base material, causing it to redistribute within the circumference. Since the nozzle of the spray pipe 303 cannot guarantee complete coverage of the entire inner wall at one time, the uniform material ring 307 can perform secondary uniform distribution of the waterproof base material, ensuring that the base material forms a complete covering layer on the inner wall of the isolation cylinder 101. As the uniform material ring 307 gradually moves downward under its own gravity, the waterproof base material remaining on its surface can be applied to the inner wall of the isolation cylinder 101 again, thereby significantly improving the uniformity and density of the anti-corrosion coating on the inner wall.

[0021] Example 2: Please refer to Figure 4 , Figures 8-10 A reverse osmosis filtration device, based on embodiment 1, wherein a central tube 204 is inserted inside the reverse osmosis mesh 203, the upper end of the central tube 204 is detachably connected to the feed pipe 2, a switch cylinder 304 is fixedly connected to the bottom end of the central tube 204, an isolation cover 305 is provided below the switch cylinder 304, a plurality of guide pipes 306 are fixedly connected to the upper end of the isolation cover 305, the free ends of each guide pipe 306 are respectively connected to the switch cylinder 304, and the isolation cover 305 is fixedly connected to the distribution sleeve 301; Multiple pressure-receiving bladders 205 are fixedly connected to the surface of the central tube 204. The surface of the pressure-receiving bladders 205 is in contact with the inner wall of the reverse osmosis mesh 203. When the pumping pipe 3 starts pumping water, the water flow first passes through the reverse osmosis mesh 203 and acts directly on the surface of the pressure-receiving bladders 205. Under the pressure of the water flow, the pressure-receiving bladders 205 are squeezed and deformed. The pressure-receiving bladders 205 are made of EPDM rubber, which has good pressure resistance and elasticity. Multiple switching sleeves 311 are fixedly installed inside the switching cylinder 304, and the switching sleeves 311 are connected to the guide pipe 306. Multiple guide rods 315 are fixedly installed at the inner end of each switching sleeve 311. The multiple switching sleeves 311 are arranged in a ring and are tapered. Multiple tensioning rods 314 are provided inside the ring-shaped guide rods 315. The ends of the tensioning rods 314 are movably sleeved on the surface of the guide rods 315 (e.g., ...). Figure 10 As shown in the figure, two adjacent tension rods 314 are connected by a film made of EPDM rubber (not shown in the figure). The inside of the switch cylinder 304 is also provided with a force rod 313, and the force rod 313 is rotatably connected to multiple tension rods 314. When the force rod 313 moves away from the guide rod 315, it will pull the tension rod 314 to move and gather it towards the center of the force rod 313. At this time, the film between the two adjacent tension rods 314 contracts, and a passage is formed inside the switch sleeve 311, so that the waterproof base material can enter the inside of the switch sleeve 311 from the switch cylinder 304 and flow into the inside of the guide pipe 306. A passive rod 310 is inserted through the surface of the through sleeve 311. A triangular top plate 312 is fixedly connected to the bottom end of the passive rod 310. A rectangular hole is opened on the side wall of the force rod 313. The triangular top plate 312 is inserted through the rectangular hole, and its inclined surface slides in contact with the edge of the rectangular hole. When the triangular top plate 312 moves downward, its inclined surface will push the passive rod 310 to move away from the guide rod 315.

[0022] like Figure 11 , Figure 12 As shown, an inner tube 206 is fixedly installed inside the central tube 204. Multiple auxiliary rings 211 are sleeved on the outside of the inner tube 206. Multiple transmission rods 209 are rotatably installed on the surface of the auxiliary rings 211. The transmission rods 209 are arranged in a ring shape, and a top plate 210 is rotatably installed at the end of the transmission rod 209 away from the auxiliary rings 211. The inner tube 206 is connected to the on / off cylinder 304. Specifically, a guide rod 208 is provided between the top plate 210 and the auxiliary ring 211. The guide rod 208 passes through the inside of the transmission rod 209. The guide rod 208 only serves to restrict the guide rod 208 and does not make any substantial change in the direction of the guide rod 208. Multiple protrusions are fixedly installed on the surface of the guide rod 208, and each protrusion is located above the guide rod 208. The guide rod 208 is arranged at an angle (the end away from the auxiliary ring 211 is inclined upward). So when the top plate 210 moves towards the auxiliary ring 211, the transmission rod 209 rotates upward and squeezes the protrusions on the surface of the guide rod 208, causing the guide rod 208 to move upward. Multiple push plates 207 are sleeved on the surface of the inner tube 206. The top piece 210 is located inside the push plate 207. The end of the push plate 207 protrudes and passes through the inside of the force-receiving bladder 205. Therefore, when the force-receiving bladder 205 is squeezed, the push plate 207 will also be subjected to force and push the top piece 210 to move. More specifically, the upper end of the passive rod 310 is fixedly connected to the bottom end of the guide rod 208. A guide tube 212 is fixedly installed at the inner end of the inner tube 206. A passive plug 213 is sleeved on the surface of the guide tube 212, and the surface of the passive plug 213 is in contact with the inner wall of the inner tube 206. The passive plug 213 and the inner tube 206 are connected by a return spring 214. The bottom end of the guide tube 212 extends into the interior of the switch cylinder 304.

[0023] Example 3: Please refer to Figure 13 , Figure 14A reverse osmosis filtration device, based on embodiments 1 and 2, has a cross-sectional shell 401 fixedly installed at the upper end of the central tube 204, a sealing ring 405 fixedly installed at the inner end of the cross-sectional shell 401, an upper end of a guide tube 212 connected to the sealing ring 405, and the upper input end of the guide tube 212 exposed on the surface of the cross-sectional shell 401. Multiple guide plates 403 are provided at the bottom end of the cross-sectional shell 401, and the bottom end of the guide plates 403 is fixedly connected to a guide rod 208. The guide plates 403 and the cross-sectional shell 401 are connected by a guide spring 408. In the working state (referring to the water purification process), the guide spring 408 is in a compressed state. Specifically, a guide block (not shown in the figure) is fixedly installed at the inner end of the cross-section shell 401. The guide block changes the orientation of the guide plate 403 so that it always corresponds to the sealing ring 405. The sealing ring 405 is made of EPDM rubber. A support plate 402 is fixedly installed at the inner end of the cross-section shell 401. A drive ring 404 is rotatably installed at the upper end of the support plate 402. An auxiliary rod 407 is rotatably installed at the end of the guide plate 403. The end of the auxiliary rod 407 is rotatably connected to the drive ring 404. More specifically, the auxiliary rod 407 is connected to the drive ring 404 in an inclined state to ensure that the drive ring 404 can be rotated through the auxiliary rod 407 no matter how the guide plate 403 moves. Multiple extrusion blocks 406 are provided between the drive ring 404 and the sealing ring 405. The extrusion blocks 406 are arranged in a ring shape and are slidably connected to the support plate 402. When the extrusion blocks 406 move toward the sealing ring 405 and extrude them, the space that can pass through the center of the sealing ring 405 becomes smaller, thereby blocking the flow of the waterproof base material. Multiple triangular blocks are fixedly installed on the inner end of the drive ring 404. The inclined surface of the triangular blocks contacts the surface of the extrusion blocks 406. When the drive ring 404 rotates, it forces the extrusion blocks 406 to move through the inclined surface of the triangular blocks. When the drive ring 404 resets, the sealing ring 405 returns to its initial state under the action of its own elasticity.

[0024] The working principle of this invention is: In use, the filling pipe is connected to the feeding pipe 2, and the waterproof base material is injected into it. At this time, the waterproof base material comes to the top of the cross-section shell 401 and enters the interior of the switch cylinder 304 through the guide pipe 212. As the waterproof base material inside the switch cylinder 304 increases, the passive plug 213 inside the inner tube 206 moves upward with the increase of the waterproof base material and compresses the return spring 214. Then the feed port of the feeding pipe 2 is sealed. Since the waterproof base material is injected directly, the force generated can directly push open the extrusion block 406 at the sealing ring 405. In use, the water pump is connected to the water pumping pipe 3 and water purification begins. The wastewater mixture enters from the inlet pipe 4, then passes through the diversion sleeve 104 into the interior of the isolation cylinder 101, where it is filtered by the reverse osmosis screen 203. Under the pressure of the water flow, the force-bearing chamber 205 is squeezed and deformed, and the internal push plate 207 drives the transmission rod 209 to rotate. At this time, the guide rod 208 moves upward (the upward movement of the guide rod 208 drives the passive rod 310 to move; at this time, the triangular top plate 312 does not drive the force-bearing rod 313). At this time, the guide plate 403 drives the drive ring 404 to rotate through the auxiliary rod 407. The guide plate 403 moves and compresses the guide spring 408. At this time, the triangular block inside the drive ring 404 experiences forces in the opposite direction to the squeezing block 406, so it does not drive the squeezing block 406 to move. When filtration stops, water pumping stops, and the water inside the outer tank 1 is drained. At this time, the compressed guide spring 408 releases its elastic force, which drives the guide plate 403 and guide rod 208 to move. The guide plate 403 moves and drives the drive ring 404 to rotate through the auxiliary rod 407. The triangular block inside the drive ring 404 drives the extrusion block 406 to move and clamps the sealing ring 405, thereby preventing the waterproof base material from overflowing. At the same time, the guide rod 208 moves downward and pushes the passive rod 310 to move, causing the triangular top plate 312 to push the force rod 313 to move. When the force rod 313 moves away from the guide rod 315, it will pull the tension rod 314 to move and bring it together towards the center of the force rod 313. At this time, the membrane between the two adjacent tension rods 314 contracts, and a passage is formed inside the through sleeve 311. The return spring 214 releases its elastic force and pushes the passive plug 213 to move, causing the waterproof base to... The material can enter the inside of the switch sleeve 311 through the switch cylinder 304 and flow into the inside of the guide pipe 306. Then, the waterproof base material is distributed through the distribution sleeve 301. Part of it flows out from the spray pipe 103 and coats the surface of the suction cylinder 102. Then, another part enters the inside of the drive pipe 302 and, together with the material distribution ring 307, coats the inner wall of the isolation cylinder 101. By coating the isolation cylinder 101 and the surface of the suction cylinder 102 with waterproof base material, the service life of the present invention is extended.

[0025] After the coating is applied, the waterproof base material is refilled into the inside of the switch cylinder 304, ready for the next coating and maintenance operation. This avoids the need to remove the isolation cylinder 101 for each maintenance, reducing the workload of the operator.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A reverse osmosis filtration device, comprising an outer tank (1), characterized in that: A water inlet pipe (4) is fixedly connected to the outer surface of the outer barrel (1), and a water suction pipe (3) is fixedly connected to the upper end of the outer barrel (1). An isolation cylinder (101) is fixedly installed at the inner end of the outer barrel (1), and a suction cylinder (102) is fixedly connected to the bottom end of the isolation cylinder (101). A diversion sleeve (104) is fixedly connected to the bottom end of the suction cylinder (102). Multiple spray pipes (103) are fixedly installed on the outer surface of the diversion sleeve (104). The spray pipes (103) are used to spray waterproof base material around the diversion sleeve (104) to form a protective layer on the surface of the diversion sleeve (104) and improve the diversion sleeve (104) in the presence of water. Corrosion resistance in chemical environments: The inner end of the isolation cylinder (101) is fixedly connected to a support ring (202), and the inner end of the support ring (202) is fixedly connected to a reverse osmosis mesh (203) for filtration. The end of the pumping pipe (3) near the support ring (202) is fixedly connected to a connecting sleeve (201), and the connecting sleeve (201) is fixedly connected to the reverse osmosis mesh (203). A feeding pipe (2) is passed through the inner side of the connecting sleeve (201). The upper end of the diversion sleeve (104) is fixedly connected to a distribution sleeve (301), and multiple drive pipes (302) are fixedly connected to the outer surface of the distribution sleeve (301).

2. The reverse osmosis filtration device according to claim 1, characterized in that: The inner end of the diversion sleeve (104) is provided with multiple guide grooves (105), each guide groove (105) is connected to the corresponding spray pipe (103), and all guide grooves (105) are in fluid communication with the distribution sleeve (301) to uniformly guide the waterproof base material into the spray pipe (103). The outer side of the reverse osmosis mesh (203) is provided with a uniform material ring (307), and the side wall of the drive pipe (302) is provided with a rectangular sliding hole.

3. The reverse osmosis filtration device according to claim 2, characterized in that: The inner end of the drive tube (302) is fitted with a movable ring (309), and the movable ring (309) passes through the rectangular sliding hole and is fixedly connected to the material leveling ring (307), so that the material leveling ring (307) can move synchronously with the movable ring (309). The bottom end of the support ring (202) is fixedly connected to a spraying pipe (303), which is fixedly connected to the drive tube (302) and is used to further diffuse and spray the waterproof base material to the inner wall of the isolation cylinder (101) after it enters.

4. A reverse osmosis filtration device according to claim 1, characterized in that: The reverse osmosis mesh (203) is internally fitted with a central tube (204). The upper end of the central tube (204) is detachably connected to the feed pipe (2). The bottom end of the central tube (204) is fixedly connected to a switch cylinder (304). An isolation cover (305) is provided below the switch cylinder (304). Multiple guide pipes (306) are fixedly connected to the upper end of the isolation cover (305). The free ends of each guide pipe (306) are respectively connected to the switch cylinder (304). The isolation cover (305) is fixedly connected to the distribution sleeve (301).

5. A reverse osmosis filtration device according to claim 4, characterized in that: Multiple pressure-bearing bladders (205) are fixedly connected to the surface of the central tube (204). The surface of the pressure-bearing bladders (205) is in contact with the inner wall of the reverse osmosis mesh (203). When the pumping pipe (3) starts pumping water, the water flow first passes through the reverse osmosis mesh (203) and acts directly on the surface of the pressure-bearing bladders (205). Under the pressure of the water flow, the pressure-bearing bladders (205) are squeezed and deformed.

6. A reverse osmosis filtration device according to claim 5, characterized in that: An inner tube (206) is fixedly installed inside the central tube (204). Multiple auxiliary rings (211) are sleeved on the outside of the inner tube (206). Multiple transmission rods (209) are rotatably installed on the surface of the auxiliary rings (211). The transmission rods (209) are arranged in a ring shape, and a top plate (210) is rotatably installed at the end of the transmission rod (209) away from the auxiliary rings (211). The inner tube (206) is connected to the through-and-off cylinder (304).

7. A reverse osmosis filtration device according to claim 6, characterized in that: Guide rods (208) are provided between the top plate (210) and the auxiliary ring (211). The guide rods (208) pass through the inside of the transmission rod (209), and multiple protrusions are fixedly installed on the surface of the guide rods (208), with each protrusion located above the guide rods (208).

8. A reverse osmosis filtration device according to claim 6, characterized in that: The inner end of the inner tube (206) is fixedly installed with a guide tube (212), and a passive plug (213) is sleeved on the surface of the guide tube (212). The surface of the passive plug (213) is in contact with the inner wall of the inner tube (206), and the passive plug (213) is connected to the inner tube (206) by a return spring (214).

9. A reverse osmosis filtration device according to claim 8, characterized in that: A truncated shell (401) is fixedly installed at the upper end of the central tube (204). A sealing ring (405) is fixedly installed at the inner end of the truncated shell (401). The upper input end of the guide tube (212) is exposed on the surface of the truncated shell (401). A plurality of guide plates (403) are provided at the bottom end of the truncated shell (401). The guide plates (403) are connected to the truncated shell (401) by guide springs (408).

10. A reverse osmosis filtration device according to claim 9, characterized in that: A support plate (402) is fixedly installed at the inner end of the cut-off shell (401). A drive ring (404) is rotatably installed at the upper end of the support plate (402). An auxiliary rod (407) is rotatably installed at the end of the guide plate (403). The end of the auxiliary rod (407) is rotatably connected to the drive ring (404). A plurality of extrusion blocks (406) are provided between the drive ring (404) and the sealing ring (405). The extrusion blocks (406) are arranged in a ring shape and are slidably connected to the support plate (402).

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