RO (Reverse Osmosis) water purifier

Abstract

The utility model discloses an RO (reverse osmosis) water purifier which comprises a mounting rack, a quick-change device is arranged on the mounting rack, the quick-change device comprises a mounting cylinder, a pressing plate, a rear cylinder, a linkage rod, a movable groove, a pressing sleeve, a fixed rod, a front cylinder, a clamping mechanism, a control sleeve, a mounting pipe and a movable block, the linkage rod is connected to the outer side of the control sleeve, the movable groove is spirally formed in the outer side of the mounting pipe, and the pressing sleeve is connected with the movable groove. A reinforcing mechanism is arranged on the outer side of the mounting pipe and comprises a moving plate, a locking sleeve, a clamping plate, an arc-shaped hole, a return block, an arc-shaped rod, an arc-shaped spring, a return groove, a return plate and a connecting block, the clamping plate is mounted on one side of the moving plate, the arc-shaped hole is formed in the inner side of the connecting block, the arc-shaped rod is sleeved with the arc-shaped spring, and the return groove is formed in the return plate. According to the water purifier, the problems that a filter element of a traditional water purifier is tedious to replace, unstable to fix and poor in sealing performance are solved, and the practicability and safety of equipment are remarkably improved through mechanical linkage and multiple protection.

Description

Technical Field

[0001] This utility model relates to the field of RO water purifier technology, and more specifically, to an RO water purifier. Background Technology

[0002] In the field of RO water purifiers, the ease of filter replacement, the stability of the installation structure, and the sealing performance of the connections are key factors affecting the performance. However, RO water purifiers on the market still have many technical defects in practical applications. These problems not only affect maintenance efficiency but may also reduce the safety and ease of operation of the equipment.

[0003] The primary problem is the significant lack of convenience in filter replacement. Existing filter installation methods have significant flaws: First, the installation and disassembly of the cartridge are complex and require specialized tools; second, the cumbersome process increases maintenance time and labor costs; and third, the reliance on specialized tools prevents ordinary users from performing maintenance themselves. This design flaw not only reduces the efficiency of equipment maintenance but may also cause component damage due to improper operation, failing to meet the requirements of modern household appliances for convenient maintenance.

[0004] More notably, the installation structure has significant defects in stability. Existing installation structures have notable problems: First, the simple quick-assembly and disassembly structure cannot withstand the vibration and impact during equipment operation; second, the continuous action of internal water pressure can easily cause the installation structure to loosen; third, the instability of the structure may cause the installation cylinder to shift position. These shortcomings of the traditional installation method not only limit the operational stability of the equipment, but may also cause abnormal operation of the filter element due to installation failure, affecting the water purification effect.

[0005] Most critically, the sealing performance at the connection is severely inadequate. Although some equipment has achieved rapid installation through improved design, this design still has obvious defects: First, simple threaded connections cannot guarantee a stable sealing effect over a long period of time; second, the connection is prone to loosening under long-term water pressure; and third, the decline in sealing performance may lead to leakage problems. This structural design deficiency not only affects the safety of equipment use, but may also lead to water leakage hazards due to seal failure. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides an RO water purifier to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an RO water purifier, including a mounting frame, on which a quick-change device is provided. The quick-change device includes an installation cylinder, a pressure plate, a rear cylinder, a linkage rod, a movable groove, a pressure sleeve, a fixed rod, a front cylinder, a snap-fit ​​mechanism, a control sleeve, an installation tube, and movable blocks. The installation cylinder, rear cylinder, and front cylinder are detachably installed inside the corresponding installation tubes. The linkage rod is fixedly connected to the outside of the control sleeve. The movable groove is spirally formed on the outside of the installation tube, and the two movable grooves are designed to face each other. The pressure sleeve is slidably connected to the fixed rod. The fixed rod is fixedly installed on one side of the linkage rod. The control sleeve is rotatably installed on the outside of the installation tube. Multiple movable blocks are fixedly installed on the pressure sleeve. The inner side of the mounting tube has the movable block sliding in the movable groove. A reinforcing mechanism is provided on the outer side of the mounting tube. The reinforcing mechanism includes a movable plate, a locking sleeve, a clamping plate, an arc-shaped hole, a return block, an arc-shaped rod, an arc-shaped spring, a return groove, a return plate, and a connecting block. The movable plate is fixedly connected to one side of the locking sleeve. The locking sleeve is installed on the outer side of the mounting tube. The clamping plate is fixedly installed on one side of the movable plate. The arc-shaped hole is opened on the inner side of the connecting block. The return block is fixedly installed on one side of the return plate. The arc-shaped rod is fixedly connected to one side of the return block. The arc-shaped spring is sleeved on the outer side of the arc-shaped rod. The return groove is opened on the return plate. The return plate is rotatably installed on the outer side of the mounting tube. The connecting block is fixedly connected to the outer side of the mounting tube. A sealing mechanism is provided on the inner side of the mounting tube.

[0010] The present invention is further configured such that a booster pump is detachably provided on one side of the mounting bracket, and connecting pipes are provided at both ends of the booster pump. The output end of the mounting cylinder is connected to the mounting pipe provided on one side of the rear cylinder through the connecting pipe. The mounting pipe provided on one side of the mounting cylinder is connected to the output end of the booster pump through the connecting pipe. The input end of the booster pump is connected to the mounting pipe provided at the top of the leftmost front cylinder through the connecting pipe. The multiple mounting pipes provided at the top of the front cylinder are connected to each other through the connecting pipe.

[0011] The present invention is further configured such that a bracket is detachably provided above the mounting frame, and the rear cylinder, the mounting cylinder and the mounting tube provided at one end of the rear cylinder and the mounting tube are all detachably attached to the bracket.

[0012] The present invention is further configured such that a plurality of locking rods are slidably provided on the side wall of the control sleeve, a plurality of locking grooves are provided on the outer wall of the mounting tube, one end of the locking rod is inserted into the locking groove, a movable spring is provided on the outer side of the control sleeve, the other end of the locking rod is connected to the outer wall of the control sleeve through the movable spring, a movable spring is connected to one side of the locking sleeve, and the other end of the movable spring is in contact with the return plate.

[0013] The present invention is further configured such that a guide block is fixedly provided on the inner side of the locking sleeve, and a guide groove is provided on the outer side of the mounting tube. The guide groove is adapted to the guide block, and the guide block and guide groove provide guidance and limitation for the locking sleeve.

[0014] The present invention is further configured such that the snap-fit ​​mechanism includes a snap-fit ​​rod, a snap-fit ​​groove, and a push spring. The snap-fit ​​rod is fixedly connected to one side of the pressure plate. The snap-fit ​​groove is opened on the outside of the mounting cylinder, the front cylinder, and the rear cylinder. One end of the snap-fit ​​rod is inserted into the snap-fit ​​groove. The two ends of the push spring are respectively connected to the inner wall of the pressure plate and the outer wall of the mounting tube. The snap-fit ​​mechanism ensures the basic snap-fit ​​and connection functions.

[0015] The present invention is further configured such that the sealing mechanism includes rubber strips and sealing grooves, with multiple rubber strips respectively fixedly disposed on the outside of the mounting cylinder, the front cylinder and the rear cylinder, and multiple sealing grooves opened inside the mounting tube. The sealing mechanism effectively improves the sealing performance of the connection through the design of multiple seals.

[0016] The present invention is further provided with a detachable rubber sleeve on the inner side of the mounting tube, and a chamfer structure is provided on the end of the clamp rod and one side of the inner wall of the clamp groove. The rubber sleeve further improves the sealing performance of the connection.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an RO water purifier with the following beneficial effects:

[0019] 1. The quick-change device, through the precise coordination of the mounting cylinder, rear cylinder, linkage rod, movable groove, pressure sleeve, fixed rod, front cylinder, snap-fit ​​mechanism, control sleeve, mounting tube, and movable block, constructs a highly efficient filter replacement system. The rotational connection between the linkage rod and the control sleeve provides a convenient operation method, the spiral sliding of the movable groove and the movable block enables precise control of the pressure sleeve, and the design of the fixed rod in conjunction with the pressure sleeve ensures reliable fixation of the mounting cylinder. This design not only eliminates the shortcomings of traditional replacement methods that require professional tools, but also achieves rapid filter replacement through mechanical linkage, significantly improving maintenance efficiency and operational convenience.

[0020] 2. The reinforcement mechanism, through the coordinated action of the moving plate, locking sleeve, clamping plate, arc-shaped hole, return block, arc-shaped rod, arc-shaped spring, return groove, return plate, and connecting block, constructs a reliable locking system. The linkage between the return block and the arc-shaped rod and other components enables precise control of the return plate. The design of the arc-shaped spring and the return groove and other components ensures the reliable reset of the locking structure. This structure provides stable fixation through multiple locking mechanisms, ensuring the stability of the installation structure.

[0021] 3. The sealing mechanism constructs a reliable sealing system through the precise cooperation of rubber strips, sealing grooves and rubber sleeves. The multi-point cooperation between the rubber strips and sealing grooves provides a stable sealing effect, and the design of the rubber sleeve achieves a reliable seal. This design provides reliable leak-proof protection through multiple seals, ensuring the sealing performance of the connection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an RO water purifier according to the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure from a second perspective in this utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the quick-change device, the reinforcing mechanism, and the sealing mechanism in this utility model.

[0025] Figure 4 This is a structural schematic diagram of the mounting cylinder, mounting tube, and locking sleeve in this utility model;

[0026] Figure 5 This is a schematic diagram of the control sleeve and pressure sleeve in this utility model.

[0027] In the diagram: 1. Mounting bracket; 2. Mounting cylinder; 3. Rear cylinder; 4. Linkage rod; 5. Movable groove; 6. Pressure sleeve; 7. Fixed rod; 8. Front cylinder; 9. Control sleeve; 10. Mounting tube; 11. Movable block; 12. Moving plate; 13. Locking sleeve; 14. Clamping plate; 15. Arc-shaped hole; 16. Return block; 17. Arc-shaped rod; 18. Arc-shaped spring; 19. Return groove; 20. Return plate; 21. Connecting block; 22. Booster pump; 23. Connecting pipe; 24. Bracket; 25. Locking rod; 26. Locking groove; 27. Movable spring; 28. Moving spring; 29. ​​Guide block; 30. Guide groove; 31. Clamping rod; 32. Clamping groove; 33. Push spring; 34. Rubber strip; 35. Sealing groove; 36. Rubber sleeve; 40. Pressure plate. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5 An RO water purifier includes a mounting frame 1 with a quick-change device. The quick-change device includes a mounting cylinder 2, a pressure plate 40, a rear cylinder 3, a linkage rod 4, a movable groove 5, a pressure sleeve 6, a fixed rod 7, a front cylinder 8, a snap-fit ​​mechanism, a control sleeve 9, an installation pipe 10, and movable blocks 11. The mounting cylinder 2, rear cylinder 3, and front cylinder 8 are detachably mounted inside their respective installation pipes 10. The linkage rod 4 is fixedly connected to the outside of the control sleeve 9. The movable groove 5 is spirally formed on the outside of the installation pipe 10, with two movable grooves 5 facing each other. The pressure sleeve 6 is slidably connected to the fixed rod 7, which is fixedly mounted on one side of the linkage rod 4. The control sleeve 9 is rotatably mounted on the outside of the installation pipe 10. Multiple movable blocks 11 are fixedly arranged inside the pressure sleeve 6, and the movable blocks 11 slide within the movable grooves 5. A reinforcing mechanism is provided on the outside of the pipe 10. The reinforcing mechanism includes a movable plate 12, a locking sleeve 13, a clamping plate 14, an arc-shaped hole 15, a return block 16, an arc-shaped rod 17, an arc-shaped spring 18, a return groove 19, a return plate 20, and a connecting block 21. The movable plate 12 is fixedly connected to one side of the locking sleeve 13, which is installed on the outside of the installation pipe 10. The clamping plate 14 is fixedly installed on one side of the movable plate 12. The arc-shaped hole 15 is opened on the inside of the connecting block 21. The return block 16 is fixedly installed on one side of the return plate 20. The arc-shaped rod 17 is fixedly connected to one side of the return block 16. The arc-shaped spring 18 is sleeved on the outside of the arc-shaped rod 17. The return groove 19 is opened on the return plate 20, which is rotatably installed on the outside of the installation pipe 10. The connecting block 21 is fixedly connected to the outside of the installation pipe 10. A sealing mechanism is provided on the inside of the installation pipe 10.

[0032] A booster pump 22 is detachably installed on one side of the mounting bracket 1. The booster pump 22 is connected to two ends by connecting pipes 23. The output end of the mounting cylinder 2 is connected to the mounting pipe 10 on one side of the rear cylinder 3 through the connecting pipe 23. The mounting pipe 10 on one side of the mounting cylinder 2 is connected to the output end of the booster pump 22 through the connecting pipe 23. The input end of the booster pump 22 is connected to the mounting pipe 10 at the top of the leftmost front cylinder 8 through the connecting pipe 23. The multiple mounting pipes 10 at the top of the front cylinder 8 are connected to each other through the connecting pipe 23.

[0033] The mounting bracket 1 is detachably provided with a bracket 24, and the rear tube 3, the mounting tube 2 and the mounting tube 10 provided at one end can all be detachably attached to the bracket 24.

[0034] In this embodiment, when using the device, PP cotton filter cartridges, granular activated carbon filter cartridges, and compressed activated carbon filter cartridges are installed in the three pre-filter cartridges 8 from right to left, respectively. An RO membrane cartridge is installed in cartridge 2, and a post-activated carbon filter cartridge is installed in cartridge 3. First, water enters the rightmost pre-filter cartridge 8, which contains a PP cotton filter cartridge, through the inlet. The PP cotton filter cartridge removes large particles of impurities such as sand and rust, ensuring that subsequent filter cartridges are not contaminated. Next, the water flows into the second pre-filter cartridge 8, which contains a granular activated carbon filter cartridge to remove chlorine, odors, and organic matter, protecting the RO membrane from chlorine damage and improving the taste of the water. Then, the water continues to flow into the third pre-filter cartridge 8, where a compressed activated carbon filter cartridge further purifies the water, removing residual organic matter and odors. After three pre-filtration stages, the water enters the booster pump 22 through the connecting pipe 23. The booster pump 22 pressurizes the water and provides... Sufficient pressure forces water through the RO membrane, the core component of the RO water purifier. The RO membrane separates water molecules using reverse osmosis, removing dissolved salts, minerals, bacteria, and viruses, leaving pure water. At this point, about one-third of the water is discharged as wastewater through one of the connecting pipes 23 connected to one end of the installation cylinder 2. The remaining portion is high-purity water filtered by the RO membrane. This water flows through another connecting pipe 23 connected to one end of the installation cylinder 2 and then into the post-activated carbon filter cylinder 3, which further removes odors and residual impurities, improving the taste and ensuring the final output water is fresh and free of impurities. Finally, the pure water treated by the post-activated carbon filter is output through the equipment's outlet, while the wastewater produced by the RO membrane is discharged through the drain pipe. The entire process, through multi-stage filtration and a precise pressurization system, achieves efficient water purification and stable output, meeting the needs of various applications, including homes, industries, and laboratories.

[0035] Please see Figures 1-5 As a further implementation of the overall equipment: multiple locking rods 25 are slidably provided on the side wall of the control sleeve 9, and multiple locking grooves 26 are opened on the outer wall of the mounting tube 10. One end of the locking rod 25 is inserted into the locking groove 26. A movable spring 27 is provided on the outside of the control sleeve 9. The other end of the locking rod 25 is connected to the outer wall of the control sleeve 9 through the movable spring 27. A movable spring 28 is connected to one side of the locking sleeve 13. The other end of the movable spring 28 is in contact with the return plate 20.

[0036] A guide block 29 is fixedly provided on the inner side of the locking sleeve 13, and a guide groove 30 is provided on the outer side of the mounting tube 10. The guide groove 30 is adapted to the guide block 29.

[0037] The locking mechanism includes a locking rod 31, a locking groove 32, and a push spring 33. The locking rod 31 is fixedly connected to one side of the pressure plate 40. The locking groove 32 is opened on the outside of the mounting cylinder 2, the front cylinder 8, and the rear cylinder 3, and one end of the locking rod 31 is inserted into the locking groove 32. The two ends of the push spring 33 are respectively connected to the inner wall of the pressure plate 40 and the outer wall of the mounting tube 10.

[0038] The sealing mechanism includes rubber strips 34 and sealing grooves 35. Multiple rubber strips 34 are fixedly installed on the outside of the mounting cylinder 2, the front cylinder 8 and the rear cylinder 3, respectively, and multiple sealing grooves 35 are opened inside the mounting tube 10.

[0039] The inner side of the mounting tube 10 is detachably provided with a rubber sleeve 36, and the end of the clamping rod 31 and one side of the inner wall of the clamping groove 32 are both provided with a chamfer structure.

[0040] More specifically, when it is necessary to replace the filter element in the installation cylinder 2, the pre-filter cylinder 8, or the post-filter cylinder 3, taking the installation cylinder 2 as an example, firstly, remove the installation cylinder 2 and the corresponding installation tube 10 from the bracket 24. Then, rotate the return plate 20 forward, causing the return plate 20 to drive the return groove 19 to rotate forward. At the same time, the return plate 20 drives the return block 16 installed on one side to rotate forward. Then, the return block 16 drives the arc-shaped rod 17 connected on one side to move along the arc-shaped hole 15. At the same time, the return block 16 will cooperate with the connecting block 21 to compress the arc-shaped spring 18. When the arc-shaped spring 18 is compressed to its limit, the return groove 19 just rotates to the position corresponding to the clamping plate 14. At this time, push the locking sleeve 13, causing the locking sleeve 13 to drive the moving plate 12 and the clamping plate 14 to move, and thus... The moving plate 12 and the locking plate 14 gradually enter the return groove 19. At the same time, the locking sleeve 13 cooperates with the return plate 20 to compress the moving spring 28. When the moving spring 28 is compressed to its limit, the locking plate 14 on the side near the locking sleeve 13 passes through the return groove 19 and moves to the other side of the return plate 20. At this time, the return plate 20 is released, causing the arc spring 18 to push the return block 16 to rotate and reset. Then, the return block 16 drives the arc rod 17 to rotate and reset along the arc hole 15. The return block 16 also drives the return groove 19 to rotate and reset to a position that does not correspond to the locking plate 14 through the return plate 20. Then, the moving plate 12 and the corresponding locking plate 14 cooperate to limit the locking sleeve 13 to one side of the return plate 20. At this time, the locking sleeve 13 no longer limits the locking rod 25. Then, the linkage rod is rotated forward. 4. This causes the linkage rod 4 to rotate the control sleeve 9 in the forward direction. The control sleeve 9 then moves the multiple locking rods 25 that are slidably mounted on the side wall. The inner wall of the locking groove 26 then presses against one end of the locking rod 25. Due to the rounded corner design at the end of the locking rod 25 and the edge of the inner wall of the locking groove 26, one end of the locking rod 25 slides out of the locking groove 26, and the other end of the locking rod 25 stretches the movable spring 27. Simultaneously, the control sleeve 9 rotates the fixed rod 7, which in turn rotates the two pressure sleeves 6. The two pressure sleeves 6 then drive the internally mounted movable blocks 11 to slide along the corresponding movable grooves 5. Since the two movable grooves 5 are spiral structures with opposing structures, the movable blocks 11 drive the two pressure sleeves 6 to move along the fixed rod 7 to both sides. The two pressure sleeves 6 gradually stop limiting the outer side of the pressure plate 40. Then, the push spring 33 pushes the pressure plate 40 to move outward. The pressure plate 40 then drives the locking rod 31 to be pulled out of the locking groove 32. Then, the mounting cylinder 2 is pulled to one side, so that the mounting cylinder 2 is pulled out of the mounting tube 10. Then, the internal RO membrane core is taken out, and the RO membrane is replaced. After the replacement is completed, the mounting cylinder 2 is reinserted into the mounting tube 10, so that the mounting cylinder 2 abuts against the rubber sleeve 36 set inside the mounting tube 10. Then, the linkage rod 4 is rotated in the opposite direction, so that the control sleeve 9 drives the two pressure sleeves 6 to rotate in the opposite direction through the fixing rod 7. Then, the pressure sleeve 6 drives the movable block 11 set inside to slide in the opposite direction along the movable groove 5. Then, the two pressure sleeves 6 will slide inward synchronously along the fixing rod 7.Then, the pressure sleeve 6 gradually presses the pressure plate 40 inward, and the pressure plate 40 then compresses the push spring 33 connected on one side. At the same time, the pressure plate 40 drives the locking rod 31 to re-insert into the slot 32. Due to the chamfer design of the end of the locking rod 31 and one side of the inner wall of the slot 32, when the locking rod 31 is fully inserted into the slot 32, the locking rod 31 drives the mounting cylinder 2 to press the rubber sleeve 36 tightly through the slot 32, ensuring the sealing of the connection between the mounting tube 10 and the mounting cylinder 2. At the same time, the multiple rubber strips 34 set on the outer wall of the mounting cylinder 2 are simultaneously engaged. The sealing performance at the connection is further enhanced by moving the locking rod 25 into the corresponding sealing groove 35. At this time, the movable spring 27 drives the locking rod 25 to slide back into the original locking groove 26. Then, the return plate 20 is rotated forward again, causing the return plate 20 to drive the return groove 19 and the return block 16 to rotate again. Then, the return block 16 drives the arc rod 17 to rotate along the arc hole 15 again. At the same time, the return block 16 and the connecting block 21 cooperate again to compress the arc spring 18. When the return groove 19 rotates to the position corresponding to the clamping plate 14 again... At this time, the moving spring 28 pushes the locking sleeve 13 to slide and reset. Then, the locking sleeve 13 drives the locking plate 14 to slide and reset via the moving plate 12. The locking sleeve 13 also drives the inner guide block 29 to slide and reset along the guide groove 30. After the moving spring 28 is fully reset, the other two locking plates 14 move to both sides of the return plate 20. Then, the return plate 20 is released, and the arc spring 18 pushes the return block 16 to drive the arc rod 17 to reset along the arc groove. At the same time, the return block 16 drives the return groove 19 to rotate and reset via the return plate 20 until it is no longer in contact with the locking plate 14. At the corresponding positions, the connecting plate and the two corresponding locking plates 14 cooperate to limit the locking sleeve 13 to one side of the return plate 20. Combined with the guide block 29 and guide groove 30 limiting the locking sleeve 13, the locking sleeve 13 is locked. Then, the inner wall of the locking sleeve 13 limits the outer end of the locking rod 25, preventing the locking rod 25 from moving. Finally, the locking rod 25 and the locking groove 26 cooperate to lock the control sleeve 9 to the outside of the mounting tube 10, preventing the control sleeve 9 from rotating. This ensures the stability of the installation structure and, consequently, the stable use of the equipment.

[0041] In summary, during the use or operation of the entire equipment: From right to left, the three pre-filters 8 contain PP cotton filter cartridges, granular activated carbon filter cartridges, and compressed activated carbon filter cartridges, respectively. RO membrane cartridge 2 is installed in the first filter, and the second filter cartridge 3 contains a post-activated carbon filter cartridge. First, water enters the rightmost pre-filter 8 containing the PP cotton filter cartridge through the inlet. The PP cotton filter cartridge removes large particles of impurities such as sand and rust, ensuring that subsequent filter cartridges are not contaminated. Next, the water flows into the second pre-filter 8, which contains the granular activated carbon filter cartridge to remove chlorine, odors, and organic matter, protecting the RO membrane from chlorine damage and improving the taste of the water. Then, the water continues to flow into the third pre-filter 8, where the compressed activated carbon filter cartridge further purifies the water, removing residual organic matter and odors. After these three pre-filtration stages, the water enters the booster pump 22 through the connecting pipe 23. The booster pump 22 then... The system provides sufficient pressure to force water through the RO membrane, the core component of the RO water purifier. It separates water molecules using reverse osmosis, removing dissolved salts, minerals, bacteria, and viruses, leaving pure water. About one-third of the water is discharged as wastewater through one of the connecting pipes 23 connected to one end of the installation cylinder 2. The remaining water is high-purity water filtered by the RO membrane. This water flows through another connecting pipe 23 connected to one end of the installation cylinder 2 and then into the post-activated carbon filter cylinder 3, which further removes odors and residual impurities, improving the taste and ensuring the final output water is fresh and free of impurities. Finally, the pure water treated by the post-activated carbon filter is output through the equipment's outlet, while the wastewater from the RO membrane is discharged through the drain pipe. The entire process, through multi-stage filtration and a precise pressurization system, achieves efficient water purification and stable output, meeting the needs of various applications, including homes, industries, and laboratories.

[0042] When the filter element in the mounting cylinder 2, the pre-mounted cylinder 8, or the post-mounted cylinder 3 needs to be replaced, taking the mounting cylinder 2 as an example, first remove the mounting cylinder 2 and the corresponding mounting tube 10 from the bracket 24. Then, rotate the return plate 20 forward, causing the return plate 20 to drive the return groove 19 to rotate forward. At the same time, the return plate 20 drives the return block 16 installed on one side to rotate forward. Then, the return block 16 drives the arc-shaped rod 17 connected on one side to move along the arc-shaped hole 15. At the same time, the return block 16 will cooperate with the connecting block 21 to compress the arc-shaped spring 18. When the arc-shaped spring 18 is compressed to its limit, the return groove 19 just rotates to the position corresponding to the locking plate 14. At this time, push the locking sleeve 13, causing the locking sleeve 13 to drive the moving plate 12 and the locking plate 14 to move, and causing the moving plate 12 to rotate. 2. The locking plate 14 gradually enters the return groove 19. At the same time, the locking sleeve 13 cooperates with the return plate 20 to compress the moving spring 28. When the moving spring 28 is compressed to its limit, the locking plate 14 on the side near the locking sleeve 13 just passes through the return groove 19 and moves to the other side of the return plate 20. At this time, the return plate 20 is released, so that the arc spring 18 pushes the return block 16 to rotate and reset. Then the return block 16 drives the arc rod 17 to rotate and reset along the arc hole 15. The return block 16 drives the return groove 19 to rotate and reset to a position that does not correspond to the locking plate 14 through the return plate 20. Then the moving plate 12 and the corresponding locking plate 14 cooperate to limit the locking sleeve 13 to one side of the return plate 20. At this time, the locking sleeve 13 no longer limits the locking rod 25. Then the linkage rod 4 is rotated forward, so that... The linkage rod 4 drives the control sleeve 9 to rotate in the forward direction. Then, the control sleeve 9 drives the multiple locking rods 25 that are slidably set on the side wall to move. Then, the inner wall of the locking groove 26 presses against one end of the locking rod 25. Due to the rounded corner design of the end of the locking rod 25 and the edge of the inner wall of the locking groove 26, one end of the locking rod 25 slides out of the locking groove 26, and the other end of the locking rod 25 drives the movable spring 27 to stretch. At the same time, the control sleeve 9 drives the fixed rod 7 to rotate, and through the fixed rod 7, drives the two pressure sleeves 6 to rotate. Then, the two pressure sleeves 6 respectively drive the movable blocks 11 set inside to slide along the corresponding movable grooves 5. Since the two movable grooves 5 are spiral structures with opposing structures, the movable blocks 11 respectively drive the two pressure sleeves 6 to slide to both sides along the fixed rod 7. The two pressure sleeves 6 gradually cease to limit the outer side of the pressure plate 40. Then, the push spring 33 pushes the pressure plate 40 to move outward. The pressure plate 40 then drives the locking rod 31 to be pulled out of the locking groove 32. Then, the mounting cylinder 2 is pulled to one side, so that the mounting cylinder 2 is pulled out of the mounting tube 10. Then, the internal RO membrane core is taken out, and the RO membrane is replaced. After the replacement is completed, the mounting cylinder 2 is reinserted into the mounting tube 10, so that the mounting cylinder 2 abuts against the rubber sleeve 36 set inside the mounting tube 10. Then, the linkage rod 4 is rotated in the opposite direction, so that the control sleeve 9 drives the two pressure sleeves 6 to rotate in the opposite direction through the fixing rod 7. Then, the pressure sleeve 6 drives the movable block 11 set inside to slide in the opposite direction along the movable groove 5. Then, the two pressure sleeves 6 will slide inward synchronously along the fixing rod 7.Then, the pressure sleeve 6 gradually presses the pressure plate 40 inward, and the pressure plate 40 then compresses the push spring 33 connected on one side. At the same time, the pressure plate 40 drives the locking rod 31 to re-insert into the slot 32. Due to the chamfer design of the end of the locking rod 31 and one side of the inner wall of the slot 32, when the locking rod 31 is fully inserted into the slot 32, the locking rod 31 drives the mounting cylinder 2 to press the rubber sleeve 36 tightly through the slot 32, ensuring the sealing of the connection between the mounting tube 10 and the mounting cylinder 2. At the same time, the multiple rubber strips 34 set on the outer wall of the mounting cylinder 2 are simultaneously engaged. The sealing performance at the connection is further enhanced by moving the locking rod 25 into the corresponding sealing groove 35. At this time, the movable spring 27 drives the locking rod 25 to slide back into the original locking groove 26. Then, the return plate 20 is rotated forward again, causing the return plate 20 to drive the return groove 19 and the return block 16 to rotate again. Then, the return block 16 drives the arc rod 17 to rotate along the arc hole 15 again. At the same time, the return block 16 and the connecting block 21 cooperate again to compress the arc spring 18. When the return groove 19 rotates to the position corresponding to the clamping plate 14 again... At this time, the moving spring 28 pushes the locking sleeve 13 to slide and reset. Then, the locking sleeve 13 drives the locking plate 14 to slide and reset via the moving plate 12. The locking sleeve 13 also drives the inner guide block 29 to slide and reset along the guide groove 30. After the moving spring 28 is fully reset, the other two locking plates 14 move to both sides of the return plate 20. Then, the return plate 20 is released, and the arc spring 18 pushes the return block 16 to drive the arc rod 17 to reset along the arc groove. At the same time, the return block 16 drives the return groove 19 to rotate and reset via the return plate 20 until it is no longer in contact with the locking plate 14. At the corresponding positions, the connecting plate and the two corresponding locking plates 14 cooperate to limit the locking sleeve 13 to one side of the return plate 20. Combined with the guide block 29 and guide groove 30 limiting the locking sleeve 13, the locking sleeve 13 is locked. Then, the inner wall of the locking sleeve 13 limits the outer end of the locking rod 25, preventing the locking rod 25 from moving. Finally, the locking rod 25 and the locking groove 26 cooperate to lock the control sleeve 9 to the outside of the mounting tube 10, preventing the control sleeve 9 from rotating. This ensures the stability of the installation structure and, consequently, the stable use of the equipment.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An RO water purifier, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is equipped with a quick-change device, which includes a mounting cylinder (2), a pressure plate (40), a rear cylinder (3), a linkage rod (4), a movable groove (5), a pressure sleeve (6), a fixing rod (7), a front cylinder (8), a snap-fit ​​mechanism, a control sleeve (9), a mounting tube (10), and movable blocks (11). The mounting cylinder (2), the rear cylinder (3), and the front cylinder (8) are installed inside the corresponding mounting tube (10). The linkage rod (4) is connected to the outside of the control sleeve (9). The movable groove (5) is spirally opened on the outside of the mounting tube (10), and the two movable grooves (5) are designed to face each other. The pressure sleeve (6) is slidably connected to the fixing rod (7). Multiple movable blocks (11) are arranged inside the pressure sleeve (6). A reinforcing mechanism is provided on the outside of the mounting tube (10). The reinforcing mechanism includes a moving plate (12), a locking sleeve (13), a clamping plate (14), an arc-shaped hole (15), a return block (16), an arc-shaped rod (17), an arc-shaped spring (18), a return groove (19), a return plate (20), and a connecting block (21). The moving plate (12) is connected to one side of the locking sleeve (13), the clamping plate (14) is installed on one side of the moving plate (12), the arc-shaped hole (15) is opened on the inside of the connecting block (21), the arc-shaped rod (17) is connected to one side of the return block (16), the arc-shaped spring (18) is sleeved on the outside of the arc-shaped rod (17), the return groove (19) is opened on the return plate (20), and a sealing mechanism is provided on the inside of the mounting tube (10).

2. The RO water purifier according to claim 1, characterized in that: A booster pump (22) is detachably provided on one side of the mounting bracket (1). The booster pump (22) is connected to two ends by connecting pipes (23). The output end of the mounting cylinder (2) is connected to the mounting pipe (10) provided on one side of the rear cylinder (3) through the connecting pipe (23). The mounting pipe (10) provided on one side of the mounting cylinder (2) is connected to the output end of the booster pump (22) through the connecting pipe (23). The input end of the booster pump (22) is connected to the mounting pipe (10) provided at the top of the leftmost front cylinder (8) through the connecting pipe (23). The multiple mounting pipes (10) provided at the top of the front cylinder (8) are connected to each other through the connecting pipe (23).

3. An RO water purifier according to claim 2, characterized in that: The mounting bracket (1) is detachably provided with a bracket (24) on top, and the rear tube (3), the mounting tube (2) and the mounting tube (10) provided at one end can all be detachably attached to the bracket (24).

4. An RO water purifier according to any one of claims 1-3, characterized in that: Multiple locking rods (25) are slidably provided on the side wall of the control sleeve (9), and multiple locking grooves (26) are provided on the outer wall of the mounting tube (10). One end of the locking rod (25) is inserted into the locking groove (26). A movable spring (27) is provided on the outside of the control sleeve (9). The other end of the locking rod (25) is connected to the outer wall of the control sleeve (9) through the movable spring (27). A movable spring (28) is connected to one side of the locking sleeve (13), and the other end of the movable spring (28) is in contact with the return plate (20).

5. An RO water purifier according to claim 4, characterized in that: The locking sleeve (13) is fixedly provided with a guide block (29) on the inner side, and the mounting tube (10) is provided with a guide groove (30) on the outer side, and the guide groove (30) is adapted to the guide block (29).

6. An RO water purifier according to claim 1, characterized in that: The locking mechanism includes a locking rod (31), a locking groove (32), and a push spring (33). The locking rod (31) is fixedly connected to one side of the pressure plate (40). The locking groove (32) is opened on the outside of the mounting cylinder (2), the front cylinder (8), and the rear cylinder (3). One end of the locking rod (31) is inserted into the locking groove (32). The two ends of the push spring (33) are respectively connected to the inner wall of the pressure plate (40) and the outer wall of the mounting tube (10).

7. An RO water purifier according to claim 1, characterized in that: The sealing mechanism includes rubber strips (34) and sealing grooves (35). Multiple rubber strips (34) are fixedly installed on the outside of the mounting cylinder (2), the front cylinder (8) and the rear cylinder (3), respectively, and multiple sealing grooves (35) are opened inside the mounting tube (10).

8. An RO water purifier according to claim 6, characterized in that: The inner side of the mounting tube (10) is detachably provided with a rubber sleeve (36), and the end of the clamp rod (31) and one side of the inner wall of the clamp groove (32) are both provided with a chamfer structure.

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