Two-stage reverse osmosis water purification equipment

Abstract

The invention belongs to the technical field of water purification equipment, and particularly discloses two-stage reverse osmosis water purification equipment, which comprises a support seat, a reverse osmosis membrane assembly is arranged at the top of the support seat, and the support seat is used for purifying wastewater; the power control assembly is arranged on one side of the reverse osmosis membrane assembly and is used for driving water flow, regulating and controlling pressure and monitoring operation. The reverse osmosis membrane can be fixed in the shell through the abutting structure, meanwhile, the fixing rod can be fixed through threaded connection of the nut and the threaded section of the fixing rod, meanwhile, the mounting firmness of the upper end cover and the lower end cover can be improved, the mounting stability of the reverse osmosis membrane, the upper end cover and the lower end cover is further improved, and the reverse osmosis membrane is unstable in mounting. Therefore, shaking is easily caused in the use process, a reverse osmosis membrane is easily damaged, and the wastewater treatment effect is further influenced.

Description

Technical Field

[0001] This invention belongs to the field of water purification equipment technology, and specifically relates to a two-stage reverse osmosis pure water equipment. Background Technology

[0002] Reverse osmosis refers to the process where, under pressure exceeding the osmotic pressure difference, a solvent (such as water) passes through a semi-permeable membrane to the low-pressure side, while other components in the solution (such as salts) are blocked on the high-pressure side and discharged with the concentrated solution, thus achieving effective separation. Depending on the different osmotic pressures of various materials, a reverse osmosis pressure greater than the osmotic pressure can be used, i.e., reverse osmosis method, to achieve the purposes of separation, extraction, purification, and concentration. Reverse osmosis equipment utilizes membrane separation technology to effectively remove charged ions, inorganic substances, colloidal particles, bacteria, and organic matter from water, making it the optimal equipment for high-purity water preparation, brackish water desalination, and wastewater treatment processes. Simply put, reverse osmosis pure water equipment is equipment that produces pure water, while two-stage reverse osmosis equipment produces pure water with even higher purity.

[0003] In existing technologies, secondary reverse osmosis equipment mainly includes a raw water tank, a raw water pump, a multi-media filter, an activated carbon filter, a precision filter, a primary high-pressure pump, a primary reverse osmosis membrane, a primary pure water tank, a secondary high-pressure pump, a secondary reverse osmosis membrane, an electrical control system box, and a flow meter. However, when installing the reverse osmosis membrane, the gap between the membrane and the outer casing is too large, causing the reverse osmosis membrane to be unstable. Furthermore, when the inlet water pressure fluctuates greatly or the water flow velocity is too fast, the reverse osmosis membrane is impacted, causing periodic shaking. Therefore, the reverse osmosis membrane is easily damaged during use, which in turn affects the wastewater treatment effect.

[0004] Therefore, it is necessary to invent a two-stage reverse osmosis pure water equipment to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a two-stage reverse osmosis pure water device to solve the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a two-stage reverse osmosis pure water device, including a support base and a reverse osmosis membrane assembly at the top for purifying wastewater; The power control component, located on one side of the reverse osmosis membrane module, is used to drive water flow, regulate pressure, and monitor operation. The reverse osmosis membrane module includes a primary reverse osmosis tube, a secondary reverse osmosis tube, a valve tube, and a clamping structure. The primary and secondary reverse osmosis tubes are connected to the power control component through the valve tube. There are three primary reverse osmosis tubes and two secondary reverse osmosis membrane modules. The two secondary reverse osmosis membrane modules and the three primary reverse osmosis membrane modules are all horizontally arranged and arranged sequentially from top to bottom. The clamping structure is installed inside the primary and secondary reverse osmosis tubes to clamp the reverse osmosis membrane.

[0007] Furthermore, the power control assembly includes an electrical control box, a flow meter, a primary booster pump, a secondary booster pump, and connecting pipes. The flow meter is installed on the electrical control box, which is fixedly connected to the top of the support base. The primary booster pump is fixedly installed on one side of the electrical control box, and the secondary booster pump is fixedly installed on the other side of the electrical control box. The output end of the primary booster pump is connected to the primary reverse osmosis pipe through a connecting pipe, and the output end of the secondary booster pump is connected to the secondary reverse osmosis pipe through a connecting pipe.

[0008] Furthermore, a primary or secondary reverse osmosis tube includes an outer shell, a reverse osmosis membrane, an upper end cap, a lower end cap, a central tube, an inlet pipe, an outlet pipe, and a flow guide block; The outer shell contains a reverse osmosis membrane, with an upper end cap and a lower end cap at each end. A central tube is located in the middle of the reverse osmosis membrane. A flow guide block is installed between the upper end cap and the reverse osmosis membrane, and between the lower end cap and the reverse osmosis membrane. An inlet pipe is fixedly connected to the upper end cap, and an outlet pipe is fixedly connected to the lower end cap. One end of the central tube, the inlet pipe, and the blow pipe passes through the upper end cap and the lower end cap, respectively, and extends to the outside of the outer shell. The other ends of the inlet pipe and the outlet pipe pass through the upper end cap and the lower end cap, respectively, and extend into the flow guide block.

[0009] Furthermore, sealing rings are fixedly connected to the outer sides of both the upper and lower end covers. The sealing rings are located between the upper or lower end cover and the inner wall of the outer shell. Connection holes are opened on the outer side of the central tube near the lower end cover. Mounting plates are provided between the upper end cover and the guide block, and between the lower end block and the guide block. The mounting plates are fixedly connected to the inner wall of the outer shell.

[0010] Furthermore, the clamping structure includes a first mounting block, a second mounting block, a fixing rod, a first nut, and a support plate; The first mounting block and the second mounting block are fixedly connected to both ends of the reverse osmosis membrane. The first mounting block and the second mounting block are fixedly connected with symmetrically arranged fixing rods. A support plate is provided between the second mounting block and the flow guide block. One end of the fixing rod passes through the mounting plate and the flow guide block and extends to the outside of the upper end cover. The other end of the fixing rod passes through the second mounting block and is inserted into the support plate. A threaded section is provided on the outside of the fixing rod located on the outside of the upper end cover. A first nut is threadedly connected to the outside of the threaded section.

[0011] Furthermore, a liquid accumulation chamber is provided in the second mounting block, the support plate is fixedly connected to the inner wall of the outer shell, the guide block near the upper end cover is fixedly connected to the top of the first mounting block, the guide block near the lower end cover is fixedly connected to the support plate, and threaded rods are fixedly connected to both ends of the mounting plate located at the lower end cover. The threaded rods pass through the guide blocks and are threadedly connected to the lower end cover with a second nut.

[0012] Furthermore, protective components are provided on the outer sides of both the upper and lower end covers. The protective components include a protective block, a plug rod, a movable block, and a first spring. The protective block is fixedly connected to one side of the upper or lower end cover. The protective block located on the upper end cover is fixedly connected with a rod. The first mounting block has a slot on the side near the mounting plate. The rod passes through the upper end cover, the guide block and the mounting plate and is inserted into the slot. A movable block is slidably connected in the slot. A first spring is fixedly connected between the movable block and the inner wall of the slot.

[0013] Furthermore, the insert rod is attached to the side of the moving block away from the first spring, the insert rod is located on both sides of the fixed rod, the protective block is located outside the first nut and the second nut, the central tube passes through the middle of the protective block, and a limiting element is provided between the protective block and the upper end cover and the lower end cover.

[0014] Furthermore, a fixing structure is provided inside the support plate, which includes a movable plate, a second spring, and a fixing component; The movable plate is attached to the end of the fixed rod away from the mounting plate on one side. The movable plate is movably connected to the inner wall of the support plate. A fixing element and a second spring are provided on the side of the movable plate away from the fixed rod. One end of the second spring is fixedly connected to the inner wall of the support plate.

[0015] Furthermore, there are multiple fixing components located on the second spring, and they are arranged in a circular array at the center of the movable plate. The fixing components include a push plate and a fixing block. One end of the push plate is hinged to the movable plate, and the other end is hinged to the fixing block. The fixing block is movably connected to the inner wall of the support plate, and one end of the fixing block passes through the support plate and is inserted into the inner wall of the outer shell.

[0016] The technical effects and advantages of this invention are as follows: This invention uses a clamping structure to fix the reverse osmosis membrane inside the outer casing. Simultaneously, the threaded connection between the nut and the threaded section of the fixing rod not only secures the fixing rod but also improves the installation firmness of the upper and lower end caps. This, in turn, enhances the stability of the reverse osmosis membrane, upper end cap, and lower end cap installation. Unstable reverse osmosis membrane installation can easily cause shaking during use, potentially damaging the membrane and affecting wastewater treatment efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a structural diagram of the first-stage or second-stage reverse osmosis tube according to an embodiment of the present invention; Figure 3 This is a structural diagram of the upper and lower end caps according to an embodiment of the present invention; Figure 4 This is a diagram showing the internal structure of the outer shell according to an embodiment of the present invention; Figure 5 This is a structural diagram of the protective component and the clamping structure according to an embodiment of the present invention; Figure 6 This is a structural diagram of the flow guide block, upper end cover, and lower end cover according to an embodiment of the present invention; Figure 7 This is a cross-sectional view of the clamping structure according to an embodiment of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of point A; Figure 9 This is a cross-sectional view of the support plate according to an embodiment of the present invention; Figure 10 This is a structural diagram of the first mounting block according to an embodiment of the present invention.

[0018] In the diagram: 1. Reverse osmosis membrane module; 2. First-stage reverse osmosis tube; 3. Second-stage reverse osmosis tube; 4. Valve tube; 5. Electrical control box; 6. First-stage booster pump; 7. Second-stage booster pump; 8. Outer casing; 9. Reverse osmosis membrane; 10. Upper end cap; 11. Lower end cap; 12. Central tube; 13. Inlet pipe; 14. Outlet pipe; 15. Flow guide block; 16. Mounting plate; 17. First mounting block; 18. Second mounting block; 19. Fixing rod; 20. First nut; 21. Support plate; 22. Threaded section; 23. Second nut; 24. Protective block; 25. Insert rod; 26. Moving block; 27. Movable plate; 28. Push plate; 29. ​​Fixing block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] This invention provides a two-stage reverse osmosis pure water device, such as... Figures 1 to 6As shown, the system includes a support base, a reverse osmosis membrane module 1, and a power control component. The reverse osmosis membrane module 1 is mounted on top of the support base and fixedly connected to the support base via a mounting bracket. It is used for purifying wastewater. The power control component is located on one side of the reverse osmosis membrane module 1 and is used for driving water flow, pressure regulation, and operation monitoring. The power control component includes an electrical control box 5, a flow meter, a primary booster pump 6, a secondary booster pump 7, and connecting pipes. The flow meter is mounted on the electrical control box 5, which is fixedly connected to the top of the support base. The primary booster pump 6 is fixedly installed on one side of the electrical control box 5, and the secondary booster pump 7 is fixedly installed on the other side. The output end of the primary booster pump 6 is connected to the primary... The reverse osmosis tube 2 is connected, and the output end of the secondary booster pump 7 is connected to the secondary reverse osmosis tube 3 through a connecting pipe. The reverse osmosis membrane module 1 includes a primary reverse osmosis tube 2, a secondary reverse osmosis tube 3, a valve tube 4, and a clamping structure. There is an intermediate passage connecting the primary reverse osmosis tube 2 and the secondary reverse osmosis tube 3. The primary reverse osmosis tube 2 and the secondary reverse osmosis tube 3 are connected to the power control component through the valve tube 4. There are three primary reverse osmosis tubes 2 and two secondary reverse osmosis membrane modules 1. The two secondary reverse osmosis membrane modules 1 and the three primary reverse osmosis membrane modules 1 are all horizontally arranged and arranged from top to bottom. The clamping structure is set inside the primary reverse osmosis tube 2 and the secondary reverse osmosis tube 3 to clamp the reverse osmosis membrane 9.

[0021] The reverse osmosis membrane 9 inside the first-stage reverse osmosis tube 2 and the second-stage reverse osmosis tube 3 is fixed by a clamping structure to prevent membrane displacement and wrinkling caused by high-pressure water flow, ensuring the effective filtration area of ​​the membrane and avoiding a decrease in the staged filtration effect. After the reverse osmosis membrane and the first-stage reverse osmosis tube 2 and the second-stage reverse osmosis tube 3 are installed, the reverse osmosis membrane assembly 1 and the power control assembly are installed on the support base to ensure that all pipelines are tightly connected to avoid leakage during high-pressure water transmission and improve the stability of wastewater treatment. During wastewater treatment, the pressure of the first-stage booster pump 6 and the second-stage booster pump 7 can be adjusted in real time by the electrical control box 5 according to the flow rate of the first-stage and second-stage product water fed back by the flow meter. The valve pipe 4 in the reverse osmosis membrane assembly 1 can control the inlet, product water and concentrate passages of the first-stage reverse osmosis tube 2 and the second-stage reverse osmosis tube 3 according to the instructions of the electrical control box 5. Most of the impurities are removed through the first-stage reverse osmosis tube 2, reducing the filtration load of the second-stage reverse osmosis tube 3 and preventing the second-stage reverse osmosis tube 3 from being quickly contaminated by too many impurities, thus extending the service life of the reverse osmosis membrane 9 and ensuring higher purity of the final product water.

[0022] In operation, the pretreated wastewater first enters the power control unit. The electrical control box 5 commands the first-stage booster pump 6 to start, pressurizing the wastewater to the pressure required for the first-stage reverse osmosis via connecting pipes, and then delivering it to three horizontally arranged first-stage reverse osmosis tubes 2. The high-pressure wastewater passes through the reverse osmosis membrane 9 within the first-stage reverse osmosis tubes 2, where impurities such as salt, heavy metals, and large molecular organic matter are removed, producing first-stage permeate. Simultaneously, unfiltered concentrate is discharged or recycled through the outlet pipe 14. The flow meter monitors the first-stage permeate flow rate in real time, and the data is fed back. The electrical control box 5 ensures a stable flow rate. After the primary permeate enters the intermediate pipeline, the electrical control box 5 instructs the secondary booster pump 7 to start, pressurizing it to the pressure required for secondary reverse osmosis. Then, it is transported through the connecting pipeline to the horizontally arranged secondary reverse osmosis tubes 3. The primary permeate passes through the reverse osmosis membrane 9 again in the secondary reverse osmosis tubes 3, further removing the remaining weak electrolytes, trace amounts of salt, etc., and finally producing secondary permeate. The secondary concentrate is discharged through the outlet pipe 14. The flow meter simultaneously monitors the flow rate of the secondary permeate to ensure that the filtration efficiency and water quality meet the standards.

[0023] like Figures 2 to 6 As shown, the primary reverse osmosis tube 2 or the secondary reverse osmosis tube 3 includes a shell 8, a reverse osmosis membrane 9, an upper end cap 10, a lower end cap 11, a central tube 12, an inlet pipe 13, an outlet pipe 14, and a flow guide block 15. The reverse osmosis membrane 9 is installed inside the shell 8. The upper end cap 10 and the lower end cap 11 are respectively installed at both ends of the reverse osmosis membrane 9. The central tube 12 is installed in the middle of the reverse osmosis membrane 9. Flow guide blocks 15 are installed between the upper end cap 10 and the reverse osmosis membrane 9, and between the lower end cap 11 and the reverse osmosis membrane 9. The inlet pipe 13 is fixedly connected to the upper end cap 10, and the outlet pipe 14 is fixedly connected to the lower end cap 11. The central tube 12... One end of the water inlet pipe 13 and the water outlet pipe passes through the upper end cover 10 and the lower end cover 11 respectively and extends to the outside of the outer shell 8. The other end of the water inlet pipe 13 and the water outlet pipe 14 passes through the upper end cover 10 and the lower end cover 11 respectively and extends into the guide block 15. A sealing ring is fixedly connected to the outside of the upper end cover 10 and the lower end cover 11. The sealing ring is located between the upper end cover 10 or the lower end cover 11 and the inner wall of the outer shell 8. A connection hole is opened on the outside of the central tube 12 near the lower end cover 11. An installation plate 16 is provided between the upper end cover 10 and the guide block 15, and between the lower end block and the guide block 15. The installation plate 16 is fixedly connected to the inner wall of the outer shell 8.

[0024] The reverse osmosis membrane 9 is installed inside the outer casing 8 through a clamping structure. The outer casing 8 protects the internal reverse osmosis membrane 9 from external impacts and maintains a high-pressure environment inside the tube. Flow guide blocks 15 are installed at both ends of the reverse osmosis membrane 9. Then, the sealing rings between the upper end cover 10, lower end cover 11 and the flow guide blocks 15, and between the upper end cover 10, lower end cover 11 and the inner wall of the outer casing 8 are sealed through the mounting plate 16, sealing both ends of the outer casing 8. This allows the upper end cover 10 and lower end cover 11 to respectively connect the inlet pipe 13 and the outlet pipe 14. Water is transported to the first-stage reverse osmosis tube 2 through the inlet pipe 13 of the upper end cover 10. Inside the secondary reverse osmosis tube 3, after the wastewater enters the upper end cover 10, it is evenly dispersed to the outer surface of the reverse osmosis membrane 9 through the radial diversion channels of the guide block 15, avoiding uneven membrane stress or filtration dead zones caused by local water flow concentration. Under high pressure, water molecules can penetrate the semi-permeable surface of the reverse osmosis membrane 9, while impurities such as salt, heavy metal ions, and large organic molecules in the wastewater are intercepted by the membrane, realizing the separation of water molecules and impurities. The purified water that has penetrated the membrane is led out through the connection hole of the central tube 12 near the lower end cover 11 to the outlet pipe 14 of the lower end cover 11, and then continues to be treated.

[0025] like Figures 4 to 7 As shown, the clamping structure includes a first mounting block 17, a second mounting block 18, a fixing rod 19, a first nut 20, and a support plate 21. The first mounting block 17 and the second mounting block 18 are respectively fixedly connected to both ends of the reverse osmosis membrane 9. The first mounting block 17 and the second mounting block 18 are fixedly connected with symmetrically arranged fixing rods 19. The support plate 21 is provided between the second mounting block 18 and the flow guide block 15. One end of the fixing rod 19 passes through the mounting plate 16 and the flow guide block 15 and extends to the outside of the upper end cover 10. The other end of the fixing rod 19 passes through the second mounting block 18 and is inserted into the support plate 21. The fixing rod 19 is located on the outside of the upper end cover 10. A threaded section 22 is provided on the outer side, and a first nut 20 is threadedly connected to the outer side of the threaded section 22. A liquid accumulation chamber is opened in the second mounting block 18. A concentrated water outlet is opened on the side of the second mounting block 18 near the support plate 21. The concentrated water outlet is correspondingly set with the water outlet pipe 14. The support plate 21 is fixedly connected to the inner wall of the outer shell 8. The guide block 15 near the upper end cover 10 is fixedly connected to the top of the first mounting block 17. The guide block 15 near the lower end cover 11 is fixedly connected to the support plate 21. Threaded rods are fixedly connected to both ends of the mounting plate 16 located at the lower end cover 11. The threaded rods pass through the guide block 15 and are threadedly connected to the lower end cover 11 with a second nut 23.

[0026] The reverse osmosis membrane 9 is installed using the first mounting block 17 and the second mounting block 18. The membrane 9 is placed inside the outer casing 8, with the bottom of the second mounting block 18 resting on the support plate 21. The membrane 9 is fixed inside the casing 8 by the insertion of the fixing rod 19 into the support plate 21. Pulling the fixing rod 19 moves the first and second mounting blocks 18, facilitating the removal of the reverse osmosis membrane 9 from the casing 8 for replacement, thus improving wastewater treatment efficiency. Then, guide blocks 15 are installed on one side of the first mounting block 17 and the support plate 21 to guide the water flow. Finally, the upper end... The upper cover 10 and the lower cover 11 are placed on the mounting plate 16 respectively. The fixing rod 19 and the threaded rod pass through the upper cover 10 and the lower cover 11. The first nut 20 and the second nut 23 are tightened to the threaded section 22 of the fixing rod 19 and the threaded rod respectively to fix the upper cover 10 and the lower cover 11, thereby improving the stability of the installation of the upper cover 10, the lower cover 11 and the reverse osmosis membrane 9. When the wastewater passes through the inlet pipe 13 and then into the outer shell 8, after being purified by the reverse osmosis membrane 9, the pure water enters the central pipe 12 through the connection port and is discharged from the outer shell 8, while the concentrated water is collected in the liquid accumulation chamber and discharged through the concentrated water outlet and the outlet pipe 14 to treat the wastewater.

[0027] like Figures 5 to 10 As shown, protective components are provided on the outer sides of both the upper end cover 10 and the lower end cover 11. Each protective component includes a protective block 24, a rod 25, a movable block 26, and a first spring. The protective block 24 is fixedly connected to one side of the upper end cover 10 or the lower end cover 11. The rod 25 is fixedly connected to the protective block 24 on the upper end cover 10. A slot is provided on the side of the first mounting block 17 near the mounting plate 16. The rod 25 passes through the upper end cover 10, the guide block 15, and the mounting plate 16 and is inserted into the slot. The movable block 26 is slidably connected inside the slot. A first spring is fixedly connected between the movable block 26 and the inner wall of the slot. The rod 25 and the movable block 26 are fitted together on the side away from the first spring. The rod 25 is located in the fixed position... On both sides of the fixed rod 19, the protective block 24 is located outside the first nut 20 and the second nut 23. The central tube 12 passes through the middle of the protective block 24. A limiting component is provided between the protective block 24 and the upper end cover 10 and the lower end cover 11. The limiting component includes a connecting block, a third spring, and a limiting block 30. The connecting block is fixedly connected to one side of the upper and lower end covers 11. The third spring is fixedly connected to both sides of the limiting block 30. The limiting block 30 is fixedly connected to both sides of one end of the third spring. The upper end cover 10 and the lower end cover 11 are inserted into the side of the limiting block 30 with a groove. Magnetic blocks are provided inside the groove and on the limiting block 30. The magnetic blocks are magnetically connected to each other. The limiting block 30 is inserted into the groove.

[0028] When installing the protective block 24, the protective block 24 is attached to one side of the upper end cover 10. At this time, the insertion rod 25 on the protective block 24 will pass through the upper end cover 10, the guide block 15, and the mounting plate 16 in sequence, and finally be inserted into the slot of the first mounting block 17. When the insertion rod 25 is inserted, it will squeeze the moving block 26 in the slot, causing the moving block 26 to compress the first spring. The elastic reaction force of the first spring will push the moving block 26 to press tightly against the insertion rod 25 and press against the first mounting block 17. When installing the protective block 24 on the lower end cover 11, first insert the threaded rod into the lower end cover 11. The upper and lower end covers 11 are secured to the mounting plate 16 by tightening the second nut 23 to one end of the threaded rod. The protective block 24 protects the limiting component and improves the stability of the limiting component in the limiting of the first nut 20. This achieves a stable connection between the upper end cover 10, the lower end cover 11, the central tube 12 and the outer shell 8. At the same time, it resists the impact and vibration of high-pressure water flow, prevents components from loosening or leaking, prevents high-pressure permeate leakage or concentrated water from mixing into the permeate, and reduces the frequency of membrane cleaning.

[0029] like Figure 7 , Figure 9 As shown, a fixing structure is provided inside the support plate 21. The fixing structure includes a movable plate 27, a second spring, and a fixing member. One side of the movable plate 27 is attached to the end of the fixing rod 19 away from the mounting plate 16. The movable plate 27 is movably connected to the inner wall of the support plate 21. The fixing member and the second spring are provided on the side of the movable plate 27 away from the fixing rod 19. One end of the second spring is fixedly connected to the inner wall of the support plate 21. There are multiple fixing members located on the second spring, and they are arranged in a circular array at the center of the movable plate 27. The fixing member includes a push plate 28 and a fixing block 29. One end of the push plate 28 is hinged to the movable plate 27, and the other end is hinged to the fixing block 29. The fixing block 29 is movably connected to the inner wall of the support plate 21, and one end of the fixing block 29 passes through the support plate 21 and is inserted into the inner wall of the outer shell 8.

[0030] When the reverse osmosis tube is placed onto the support plate 21 via the second mounting block 18, the fixing rod 19 on the reverse osmosis tube pushes the movable plate 27 toward the inside of the support plate 21, causing the movable plate 27 to slide along the inner wall of the support plate 21 away from the fixing rod 19 and compress the second spring. When the movable plate 27 slides, the push plate 28 hinged on one side will deflect at an angle with the displacement of the movable plate 27. One end of the push plate 28 pushes the fixing block 29 toward the outside of the support plate 21, causing the fixing block 29 to extend outward along the inner wall of the support plate 21 and insert into the reserved slot on the inner wall of the outer shell 8. At the same time, the elastic reaction force of the second spring will continue to push the movable plate 27, so that the push plate 28 maintains the pushing force on the fixing block 29, ensuring that the fixing block 29 fits tightly with the slot and will not loosen. This facilitates the improvement of the stability of the installation of the first mounting block 17, the second mounting block 18 and the reverse osmosis membrane 9, and prevents them from shaking inside the outer shell 8, which would affect the wastewater treatment effect.

[0031] Working principle of this invention: Reference Figures 1 to 10 As shown, in use, the reverse osmosis membrane 9 is first fixedly connected to the first mounting block 17 and the second mounting block 18 at both ends. Then, the unit is placed inside the outer shell 8 of the first or second stage reverse osmosis tube 3, so that the bottom of the second mounting block 18 is in contact with the top of the support plate 21. At the same time, the fixing rod 19 pushes the movable plate 27 into the support plate 21. The movable plate 27 slides along the inner wall and compresses the second spring. Since the bottom of the movable plate 27 is hinged to the top of the push plate 28 and the bottom of the push plate 28 is hinged to the fixing block 29, the movement of the movable plate 27 causes the push plate 28 to deflect, thereby pushing the fixing block 29 along the inner wall and inserting it into the slot on the inner wall of the outer shell 8. Through the insertion and cooperation of the fixing rod 19 and the support plate 21, the axial displacement of the reverse osmosis membrane 9 is initially restricted.

[0032] Next, the guide block 15 is fixed to the top of the first mounting block 17 and one side of the support plate 21, respectively, ensuring that its diversion channel is precisely aligned with the surface of the reverse osmosis membrane 9. Then, the upper end cover 10 and the lower end cover 11 are respectively attached to both ends of the outer shell 8, so that the fixing rod 19 extends outward through the upper end cover 10, and the threaded rod passes through the lower end cover 11 and is threadedly connected to the second nut 23. At the same time, the first nut 20 is screwed into the threaded section 22 of the fixing rod 19. The upper end cover 10, the lower end cover 11 and the outer shell 8 are sealed and fixed by the double nut locking. Then, the limiting block 30 is moved to drive the third spring to stretch, so that it is inserted into the grooves of the upper end cover 10 and the lower end cover 11 respectively, and the first nut 20 and the second nut 23 are inserted. Through the magnetic connection of the magnetic block, the limiting block is secured. The upper end cap 10 and lower end cap 11 are fixed in place, while preventing the first nut 20 and the second nut 23 from loosening due to vibration. The protective block 24 is then attached and fixed to the outside of the upper end cap 10 and the lower end cap 11. The insertion rod 25 on the protective block 24 is passed through the upper end cap 10, the guide block 15, and the mounting plate 16 in sequence, and finally inserted into the slot of the first mounting block 17. The insertion rod 25 presses against the moving block 26 in the slot and compresses the first spring. The elastic reaction force of the first spring pushes the moving block 26 to press against the insertion rod 25, and then presses against the first mounting block 17, so that the reverse osmosis membrane 9 is installed stably. The protective block 24 is fixed to the upper end cap 10 and the lower end cap 11 respectively to protect the limiting parts, so that the two primary reverse osmosis tubes and the two secondary reverse osmosis tubes 3 are assembled.

[0033] Next, two primary reverse osmosis tubes and two secondary reverse osmosis tubes 3 are horizontally fixed to the top of the support base using the mounting bracket, arranged sequentially from top to bottom. The electrical control box 5, primary booster pump 6, and secondary booster pump 7 of the power control component are all fixed to the top of the support base. The connection between the power control component and the two primary reverse osmosis tubes and two secondary reverse osmosis tubes 3 is completed through connecting pipes. The pretreated wastewater first enters the power control component. The electrical control box 5, flow meter, primary booster pump 6, and secondary booster pump 7 are started to purify the wastewater through the primary reverse osmosis tubes 2 and 3.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A two-stage reverse osmosis pure water equipment, characterized in that, include: The support base is equipped with a reverse osmosis membrane module (1) on top for purifying wastewater; A power control component is located on one side of the reverse osmosis membrane module (1) and is used for driving water flow, pressure regulation and operation monitoring; The reverse osmosis membrane module (1) includes a primary reverse osmosis tube (2), a secondary reverse osmosis tube (3), a valve tube (4), and a clamping structure. The primary reverse osmosis tube (2) and the secondary reverse osmosis tube (3) are connected to the power control component through the valve tube (4). There are three primary reverse osmosis tubes (2) and two secondary reverse osmosis membrane modules (1). The two secondary reverse osmosis membrane modules (1) and the three primary reverse osmosis membrane modules (1) are all horizontally arranged and arranged from top to bottom. The clamping structure is installed inside the primary reverse osmosis tube (2) and the secondary reverse osmosis tube (3) to clamp the reverse osmosis membrane (9).

2. The dual-stage reverse osmosis pure water equipment according to claim 1, characterized in that: The power control assembly includes an electrical control box (5), a flow meter, a primary booster pump (6), a secondary booster pump (7), and connecting pipes. The electrical control box (5) is equipped with a flow meter and is fixedly connected to the top of the support base. The primary booster pump (6) is fixedly installed on one side of the electrical control box (5), and the secondary booster pump (7) is fixedly installed on the other side of the electrical control box (5). The output end of the primary booster pump (6) is connected to the primary reverse osmosis pipe (2) through the connecting pipe, and the output end of the secondary booster pump (7) is connected to the secondary reverse osmosis pipe (3) through the connecting pipe.

3. The dual-stage reverse osmosis pure water equipment according to claim 2, characterized in that: The primary reverse osmosis tube (2) or the secondary reverse osmosis tube (3) includes a shell (8), a reverse osmosis membrane (9), an upper end cap (10), a lower end cap (11), a central tube (12), an inlet pipe (13), an outlet pipe (14), and a flow guide block (15). The outer shell (8) is provided with a reverse osmosis membrane (9). The reverse osmosis membrane (9) is provided with an upper end cap (10) and a lower end cap (11) at both ends. A central tube (12) is provided in the middle of the reverse osmosis membrane (9). A flow guide block (15) is provided between the upper end cap (10) and the reverse osmosis membrane (9), and between the lower end cap (11) and the reverse osmosis membrane (9). An inlet pipe (13) is fixedly connected to the upper end cap (10), and an outlet pipe (14) is fixedly connected to the lower end cap (11). One end of the central tube (12), the inlet pipe (13), and the blow pipe passes through the upper end cap (10) and the lower end cap (11) respectively and extends to the outside of the outer shell (8). The other end of the inlet pipe (13) and the outlet pipe (14) passes through the upper end cap (10) and the lower end cap (11) respectively and extends into the flow guide block (15).

4. The dual-stage reverse osmosis pure water equipment according to claim 3, characterized in that: A sealing ring is fixedly connected to the outer side of the upper end cover (10) and the lower end cover (11). The sealing ring is located between the upper end cover (10) or the lower end cover (11) and the inner wall of the outer shell (8). A connection hole is opened on the outer side of the central tube (12) near the lower end cover (11). An installation plate (16) is provided between the upper end cover (10) and the guide block (15) and between the lower end block and the guide block (15). The installation plate (16) is fixedly connected to the inner wall of the outer shell (8).

5. The dual-stage reverse osmosis pure water equipment according to claim 4, characterized in that: The clamping structure includes a first mounting block (17), a second mounting block (18), a fixing rod (19), a first nut (20), and a support plate (21); The first mounting block (17) and the second mounting block (18) are respectively fixedly connected to both ends of the reverse osmosis membrane (9). The first mounting block (17) and the second mounting block (18) are fixedly connected with symmetrically arranged fixing rods (19). A support plate (21) is provided between the second mounting block (18) and the flow guide block (15). One end of the fixing rod (19) passes through the mounting plate (16) and the flow guide block (15) and extends to the outside of the upper end cover (10). The other side of the fixing rod (19) passes through the second mounting block (18) and is inserted into the support plate (21). A threaded section (22) is provided on the outside of the fixing rod (19) located on the outside of the upper end cover (10). A first nut (20) is threadedly connected to the outside of the threaded section (22).

6. The dual-stage reverse osmosis pure water equipment according to claim 5, characterized in that: The second mounting block (18) has a liquid accumulation chamber. The support plate (21) is fixedly connected to the inner wall of the outer shell (8). The guide block (15) near the upper end cover (10) is fixedly connected to the top of the first mounting block (17). The guide block (15) near the lower end cover (11) is fixedly connected to the support plate (21). The mounting plate (16) located on the lower end cover (11) has threaded rods fixedly connected to both ends. The threaded rods pass through the guide block (15) and are threadedly connected to the lower end cover (11) with a second nut (23).

7. The dual-stage reverse osmosis pure water equipment according to claim 6, characterized in that: The upper end cover (10) and the lower end cover (11) are both provided with protective components on their outer sides. The protective components include a protective block (24), a plug rod (25), a moving block (26) and a first spring. The protective block (24) is fixedly connected to one side of the upper end cover (10) or the lower end cover (11). The protective block (24) located on the upper end cover (10) is fixedly connected with a plug rod (25). The first mounting block (17) is provided with a slot on the side near the mounting plate (16). The plug rod (25) passes through the upper end cover (10), the guide block (15) and the mounting plate (16) and is inserted into the slot. A moving block (26) is slidably connected in the slot. A first spring is fixedly connected between the moving block (26) and the inner wall of the slot.

8. The dual-stage reverse osmosis pure water equipment according to claim 7, characterized in that: The insertion rod (25) is attached to the side of the moving block (26) away from the first spring. The insertion rod (25) is located on both sides of the fixed rod (19). The protective block (24) is located outside the first nut (20) and the second nut (23). The central tube (12) passes through the middle of the protective block (24). A limiting member is provided between the protective block (24) and the upper end cover (10) and the lower end cover (11).

9. The dual-stage reverse osmosis pure water equipment according to claim 8, characterized in that: The support plate (21) is provided with a fixing structure, which includes a movable plate (27), a second spring, and a fixing member; The movable plate (27) is attached to the end of the fixed rod (19) away from the mounting plate (16) on one side. The movable plate (27) is movably connected to the inner wall of the support plate (21). A fixing member and a second spring are provided on the side of the movable plate (27) away from the fixed rod (19). One end of the second spring is fixedly connected to the inner wall of the support plate (21).

10. The dual-stage reverse osmosis pure water equipment according to claim 8, characterized in that: The fixing components are located on the second spring in multiple ways, and are arranged in a circular array at the center of the movable plate (27). The fixing components include a push plate (28) and a fixing block (29). One end of the push plate (28) is hinged to the movable plate (27), and the other end is hinged to the fixing block (29). The fixing block (29) is movably connected to the inner wall of the support plate (21), and one end of the fixing block (29) passes through the support plate (21) and is inserted into the inner wall of the outer shell (8).

Images