Parallel multistage reverse osmosis ultrapure water preparation system

Abstract

The invention belongs to the technical field of ultrapure water preparation, and particularly discloses a parallel multistage reverse osmosis ultrapure water preparation system which comprises a base, a placement frame is arranged on the upper wall of the base, supporting frames are arranged on the upper wall of the base and symmetrically arranged on the two sides of the placement frame, the placement frame is composed of vertical rods and transverse rods, the vertical rods are symmetrically arranged on the upper wall of the base, and the transverse rods are symmetrically arranged on the upper wall of the base. The transverse rod array is arranged between the inner side walls of the vertical rods, the supporting frame comprises a frame, a supporting plate and a supporting table, and a first-stage reverse osmosis filtering mechanism, a second-stage reverse osmosis filtering mechanism and a third-stage reverse osmosis filtering mechanism are sequentially arranged on the transverse plate of the placing frame from top to bottom. The device has multiple stages of reverse osmosis membranes, each stage of reverse osmosis membrane is connected in parallel, and the reverse osmosis membrane needing to be replaced in each stage is judged through the electromagnetic flowmeter and is automatically replaced, so that the cost is saved, and the ultrapure water preparation efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrapure water preparation, and specifically refers to a parallel multi-stage reverse osmosis ultrapure water preparation system. Background Art

[0002] The preparation process of ultrapure water specifically includes pretreatment (filtration, softening, etc.), anion / cation removal, mixed bed ion removal, UV sterilization, transportation and storage, etc. Each step requires strict control and testing. Reverse osmosis (RO) specifically pushes water from each stage through a reverse osmosis membrane under high pressure to filter and remove dissolved solids, organic matter, bacteria, viruses and other impurities, thereby obtaining relatively pure water.

[0003] The essence of the reverse osmosis membrane is a filter mesh structure. After long-term use, that is, when the reverse osmosis membrane reaches the upper limit of its use capacity, its filtering effect is greatly reduced or even cannot be filtered normally. Therefore, the reverse osmosis membrane needs to be replaced after long-term use. In the prior art, the equipment needs to be shut down when replacing the reverse osmosis membrane. In addition, in the ultrapure water preparation process, the relative content of impurities in the water in each step cannot be measured, so that the operating status and use efficiency of the reverse osmosis membrane cannot be intuitively displayed, and it is impossible to determine which stage of the reverse osmosis membrane needs to be replaced. Usually, when the filtering effect of the reverse osmosis membrane is greatly reduced, the reverse osmosis membranes of each stage need to be replaced at the same time.

[0004] Therefore, a parallel multi-stage reverse osmosis ultrapure water preparation system is needed to solve the above problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a parallel multi-stage reverse osmosis ultrapure water preparation system, which has multiple stages of reverse osmosis membranes, and each stage of reverse osmosis membranes is connected in parallel. The electromagnetic flowmeter is used to determine the reverse osmosis membrane that needs to be replaced in each stage, and the replacement is automatically performed, which saves costs and greatly improves the efficiency of ultrapure water preparation.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a parallel multi-stage reverse osmosis ultrapure water preparation system, including a base, a placement rack is provided on the upper wall of the base, a support rack is provided on the upper wall of the base, and the support rack is symmetrically arranged on both sides of the placement rack, wherein the placement rack is composed of vertical bars and horizontal bars, the vertical bars are symmetrically arranged on the upper wall of the base, the horizontal bar array is arranged between the inner side walls of the vertical bars, the support rack includes a frame, a support plate and a support platform, the frame is arranged in a door frame type, the frame is symmetrically arranged on the upper wall of the base, the frame is symmetrically arranged on both sides of the placement rack, the support plates are arranged in pairs, and the support plates are arranged at equal intervals on the outer side walls of the frame. The support platforms are arranged in pairs, and the support platforms are arranged at equal intervals on the inner side walls of the frame. The horizontal plates of the placement rack are sequentially provided with a first-level reverse osmosis filtration mechanism, a second-level reverse osmosis filtration mechanism and a third-level reverse osmosis filtration mechanism from top to bottom, wherein the first-level reverse osmosis filtration mechanism is composed of a first-level reverse osmosis conversion component and two first-level reverse osmosis membranes, the second-level reverse osmosis filtration mechanism is composed of a second-level reverse osmosis conversion component and two second-level reverse osmosis membranes, and the third-level reverse osmosis filtration mechanism is composed of a third-level reverse osmosis conversion component and two third-level reverse osmosis membranes, wherein the first-level reverse osmosis conversion component, the second-level reverse osmosis conversion component and the third-level reverse osmosis conversion component have the same structure; A fixed component is provided between two adjacent support plates, and the first-stage reverse osmosis membrane, the second-stage reverse osmosis membrane and the third-stage reverse osmosis membrane are respectively provided on the fixed component; The primary reverse osmosis conversion assembly includes a conversion transmission assembly, a water inlet converter and a water outlet converter. The conversion transmission assembly is arranged between two support frames, the water inlet converter is arranged on the upper wall of one end of the cross bar, and the water outlet converter is arranged on the upper wall of the other end of the cross bar; The two first-stage reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the first-stage reverse osmosis conversion component, the two second-stage reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the second-stage reverse osmosis conversion component, and the two third-stage reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the third-stage reverse osmosis conversion component.

[0007] Furthermore, the conversion transmission assembly includes a reciprocating frame, a driving shaft, a transmission motor, a reciprocating gear and a reciprocating rack. The driving shaft is arranged on the cross bar, the transmission motor is arranged on the lower wall of the cross bar, the transmission motor is connected to the lower end of the driving shaft, the reciprocating gear is arranged on the upper end of the driving shaft, the end surface of the support platform is provided with a slot, the two sides of the reciprocating frame are slidably arranged in the slot of the support platform, the reciprocating rack is arranged on an inner side wall on one side of the middle of the reciprocating frame, and the reciprocating rack is meshed with the reciprocating gear.

[0008] Furthermore, the water inlet converter includes a water inlet pipe, a water outlet branch pipe, a conversion shell, a rotating core, a conversion shaft, a conversion gear and a transmission rack. The conversion shell is arranged on the upper wall of one end of the placement rack. The conversion shell is a circular cylindrical hollow structure. The rotating core is rotatably arranged in the conversion shell. The lower end of the conversion shaft is arranged on the upper end surface of the rotating core. The conversion shaft passes through the upper wall of the conversion shell. The conversion gear is arranged on the upper end of the conversion shaft. The transmission rack is arranged on the inner side wall of one end of the reciprocating frame. The transmission rack is meshed with the conversion gear. The water inlet pipe is arranged on the outer wall of the conversion shell. The water outlet branch pipe is symmetrically arranged on the outer wall of the conversion shell relative to the water inlet pipe. A channel is penetrated in the rotating core, and the two ends of the channel are respectively arranged on the outer side wall of the rotating core.

[0009] Furthermore, the water outlet converter includes a water outlet pipe, a water inlet branch pipe, a conversion shell two, a rotating core two, a conversion shaft two, a conversion gear two and a transmission rack two. The conversion shell two is arranged on the upper wall of the other end of the placement rack. The conversion shell two is a circular cylindrical hollow structure. The rotating core two is rotatably arranged in the conversion shell two. The lower end of the conversion shaft two is arranged on the upper end surface of the rotating core two. The conversion shaft two passes through the upper wall of the conversion shell two. The conversion gear two is arranged on the upper end of the conversion shaft two. The transmission rack two is arranged on the inner side wall of the other end of the reciprocating frame opposite to the transmission rack one. The transmission rack two is meshed with the conversion gear two. The water outlet pipe is arranged on the outer wall of the conversion shell two. The water inlet branch pipe is symmetrically arranged on the outer wall of the conversion shell two relative to the water outlet pipe. A channel two is penetrated in the rotating core two, and the two ends of the channel two are respectively arranged on the outer side walls of the rotating core two.

[0010] Furthermore, the two ends of the first-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe, the two ends of the second-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe, and the two ends of the third-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe.

[0011] Furthermore, the outlet pipe of the first-stage reverse osmosis conversion component is connected to the water inlet pipe of the second-stage reverse osmosis conversion component through a connecting pipe 1, and the outlet pipe of the second-stage reverse osmosis conversion component is connected to the water inlet pipe of the third-stage reverse osmosis conversion component through a connecting pipe 2.

[0012] Furthermore, the fixing assembly includes a movable sleeve, a movable hoop, a fixed hoop, a fixed rod and a compression spring, the upper end of the fixed rod is arranged on the lower wall of the support plate, the fixed hoop is a semicircular ring, the fixed hoop is arranged on the upper wall of the support plate, the movable sleeve is slidably mounted on the fixed rod, the compression spring is mounted on the fixed rod, the upper and lower ends of the compression spring are respectively arranged on the lower wall of the support plate and the upper end of the movable sleeve, and the movable hoop is arranged at the lower end of the movable sleeve.

[0013] Furthermore, the connecting pipe 1 is provided with a detection pipe 1, and an electromagnetic flowmeter 1 and a valve 1 are installed on the detection pipe 1; the connecting pipe 2 is provided with a detection pipe 2, and an electromagnetic flowmeter 2 and a valve 2 are installed on the detection pipe 2.

[0014] Furthermore, an electromagnetic flowmeter and a main valve are installed on the water outlet pipe of the three-stage reverse osmosis conversion component.

[0015] Furthermore, the first-stage reverse osmosis membrane is placed in the corresponding movable hoop and fixed hoop, the second-stage reverse osmosis membrane is placed in the corresponding movable hoop and fixed hoop, and the third-stage reverse osmosis membrane is placed in the corresponding movable hoop and fixed hoop.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. A multi-stage reverse osmosis structure is adopted, which includes a primary reverse osmosis membrane, a secondary reverse osmosis membrane and a tertiary reverse osmosis membrane. The reverse osmosis membranes at each stage are arranged in series, and the reverse osmosis membranes at each stage are arranged in parallel. The water can be filtered in multiple layers to determine the reverse osmosis membrane that needs to be replaced, and the reverse osmosis membranes at each stage are used alternately; 2. The reciprocating motion of the reciprocating gear and the reciprocating rack drives the transmission rack 1 and the transmission rack 2 to reciprocate, thereby driving the conversion gear 1 and the conversion gear 2 to rotate forward and reverse, thereby controlling the forward and reverse rotation of the rotating core 1 and the rotating core 2, thereby controlling the water to enter the reverse osmosis membrane that needs to be replaced, and automatically realizing the replacement of the reverse osmosis membrane; 3. An electromagnetic flowmeter 1 is provided on the connecting pipe 1 between the first-stage reverse osmosis conversion assembly and the second-stage reverse osmosis conversion assembly, an electromagnetic flowmeter 2 is provided on the connecting pipe 2 between the second-stage reverse osmosis conversion assembly and the third-stage reverse osmosis conversion assembly, and an electromagnetic flowmeter 3 is provided on the outlet pipe of the third-stage reverse osmosis conversion assembly. By controlling the switch of valve 1, valve 2 and the main valve and observing the readings of electromagnetic flowmeter 1, electromagnetic flowmeter 2 and electromagnetic flowmeter 3 at the same time, the reverse osmosis membrane that needs to be replaced can be determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a parallel multi-stage reverse osmosis ultrapure water preparation system proposed by the present invention; Figure 2 for Figure 1 The main view of Figure 3 for Figure 1 A top view of Figure 4 It is a three-dimensional structural schematic diagram of the support frame and the fixing assembly; Figure 5 It is a three-dimensional structural schematic diagram of a primary reverse osmosis filtration mechanism (a secondary reverse osmosis filtration mechanism, a tertiary reverse osmosis filtration mechanism); Figure 6 for Figure 5 The main view; Figure 7 for Figure 5 A top view of Figure 8 for Figure 6 Schematic diagram of the middle AA section; Fig. 9 for Figure 8 A magnified view of part B in FIG. Fig.10 for Figure 8 Enlarged view of part C in .

[0018] Among them, 1. base, 2. placement rack, 3. support frame, 4. vertical rod, 5. cross rod, 6. frame, 7. support plate, 8. support table, 9. primary reverse osmosis filtration mechanism, 10. secondary reverse osmosis filtration mechanism, 11. tertiary reverse osmosis filtration mechanism, 12. primary reverse osmosis conversion component, 13. primary reverse osmosis membrane, 14. secondary reverse osmosis conversion component, 15. secondary reverse osmosis membrane, 16. tertiary reverse osmosis conversion component, 17. tertiary reverse osmosis membrane, 18. fixing component, 19. conversion transmission component, 20. water inlet converter, 21. water outlet converter, 22. reciprocating frame, 23. driving shaft, 24. transmission motor, 25. reciprocating gear, 26. reciprocating rack, 27. water inlet pipe, 28. water outlet branch pipe , 29. Conversion housing one, 30. Rotating core one, 31. Conversion shaft one, 32. Conversion gear one, 33. Transmission rack one, 34. Channel one, 35. Outlet pipe, 36. Inlet branch pipe, 37. Conversion housing two, 38. Rotating core two, 39. Conversion shaft two, 40. Conversion gear two, 41. Transmission rack two, 42. Channel two, 43. Connecting pipe one, 44. Connecting pipe two, 45. Movable sleeve, 46. Movable hoop, 47. Fixed hoop, 48. Fixed rod, 49. Compression spring, 50. Detection tube one, 51. Detection tube two, 52. Electromagnetic flowmeter one, 53. Electromagnetic flowmeter two, 54. Electromagnetic flowmeter three, 55. Valve one, 56. Valve two, 57. Main valve, 58. Slot.

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0022] like Figure 1 As shown, the present invention proposes a parallel multi-stage reverse osmosis ultrapure water preparation system, including a base 1, a placement rack 2 is provided on the upper wall of the base 1, a support rack 3 is provided on the upper wall of the base 1, and the support rack 3 is symmetrically arranged on both sides of the placement rack 2, wherein the placement rack 2 is composed of a vertical rod 4 and a horizontal rod 5, the vertical rod 4 is symmetrically arranged on the upper wall of the base 1, and the horizontal rod 5 is arrayed between the inner side walls of the vertical rod 4, the support rack 3 includes a frame 6, a support plate 7 and a support platform 8, the frame 6 is arranged in a door frame type, the frame 6 is symmetrically arranged on the upper wall of the base 1, the frame 6 is symmetrically arranged on both sides of the placement rack 2, the support plates 7 are arranged in pairs, the support plates 7 are arranged at equal intervals on the outer side walls of the frame 6, and the support platforms 8 are arranged in pairs The support platform 8 is arranged at equal intervals on the inner side wall of the frame 6, and the horizontal plate of the placement rack 2 is sequentially provided with a first-level reverse osmosis filtration mechanism 9, a second-level reverse osmosis filtration mechanism 10 and a third-level reverse osmosis filtration mechanism 11 from top to bottom, the first-level reverse osmosis filtration mechanism 9 is composed of a first-level reverse osmosis conversion component 12 and two first-level reverse osmosis membranes 13, the second-level reverse osmosis filtration mechanism 10 is composed of a second-level reverse osmosis conversion component 14 and two second-level reverse osmosis membranes 15, and the third-level reverse osmosis filtration mechanism 11 is composed of a third-level reverse osmosis conversion component 16 and two third-level reverse osmosis membranes 17, wherein the first-level reverse osmosis conversion component 12, the second-level reverse osmosis conversion component 14 and the third-level reverse osmosis conversion component 16 have the same structure; A fixing assembly 18 is provided between two adjacent support plates 7, and the primary reverse osmosis membrane 13, the secondary reverse osmosis membrane 15 and the tertiary reverse osmosis membrane 17 are respectively provided on the fixing assembly 18; The primary reverse osmosis conversion assembly 12 includes a conversion transmission assembly 19, a water inlet converter 20 and a water outlet converter 21, wherein the conversion transmission assembly 19 is disposed between two support frames 3, the water inlet converter 20 is disposed on an upper wall at one end of the cross bar 5, and the water outlet converter 21 is disposed on an upper wall at the other end of the cross bar 5; The two first-stage reverse osmosis membranes 13 are arranged in parallel between the water inlet converter 20 and the water outlet converter 21 in the first-stage reverse osmosis conversion component 12, the two second-stage reverse osmosis membranes 15 are arranged in parallel between the water inlet converter 20 and the water outlet converter 21 in the second-stage reverse osmosis conversion component 14, and the two third-stage reverse osmosis membranes 17 are arranged in parallel between the water inlet converter 20 and the water outlet converter 21 in the third-stage reverse osmosis conversion component 16.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, the conversion transmission assembly 19 includes a reciprocating frame 22, a driving shaft 23, a transmission motor 24, a reciprocating gear 25 and a reciprocating rack 26. The driving shaft 23 is arranged on the cross bar 5, the transmission motor 24 is arranged on the lower wall of the cross bar 5, the transmission motor 24 is connected to the lower end of the driving shaft 23, the reciprocating gear 25 is arranged at the upper end of the driving shaft 23, the end surface of the support platform 8 is provided with a slot 58, the two sides of the reciprocating frame 22 are slidably arranged in the slot 58 of the support platform 8, the reciprocating rack 26 is arranged on the inner side wall of one side in the middle of the reciprocating frame 22, and the reciprocating rack 26 is meshed with the reciprocating gear 25.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 As shown, the water inlet converter 20 includes a water inlet pipe 27, a water outlet branch pipe 28, a conversion housing 29, a rotating core 30, a conversion shaft 31, a conversion gear 32 and a transmission rack 33. The conversion housing 29 is arranged on the upper wall of one end of the placement rack 2. The conversion housing 29 is a circular cylindrical hollow structure. The rotating core 30 is rotatably arranged in the conversion housing 29. The lower end of the conversion shaft 31 is arranged on the upper end surface of the rotating core 30. The conversion shaft 31 penetrates the conversion housing 29. The conversion gear 32 is arranged on the upper end of the conversion shaft 31, the transmission rack 33 is arranged on the inner wall of one end of the reciprocating frame 22, the transmission rack 33 is meshed with the conversion gear 32, the water inlet pipe 27 is arranged on the outer wall of the conversion shell 29, the water outlet branch pipe 28 is symmetrically arranged on the outer wall of the conversion shell 29 relative to the water inlet pipe 27, a channel 34 is penetrated by the rotating core 30, and the two ends of the channel 34 are respectively arranged on the outer side walls of the rotating core 30.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10As shown, the water outlet converter 21 includes a water outlet pipe 35, a water inlet branch pipe 36, a conversion housing 37, a rotating core 38, a conversion shaft 39, a conversion gear 40 and a transmission rack 41. The conversion housing 37 is arranged on the upper wall of the other end of the placement rack 2. The conversion housing 37 is a circular cylindrical hollow structure. The rotating core 38 is rotatably arranged in the conversion housing 37. The lower end of the conversion shaft 39 is arranged on the upper end surface of the rotating core 38. The conversion shaft 39 passes through the upper wall of the conversion housing 37. The conversion gear 2 40 is arranged at the upper end of the conversion shaft 2 39, the transmission rack 2 41 is arranged at the inner wall of the other end of the reciprocating frame 22 opposite to the transmission rack 1 33, the transmission rack 2 41 is meshed with the conversion gear 2 40, the water outlet pipe 35 is arranged on the outer wall of the conversion shell 2 37, the water inlet branch pipe 36 is symmetrically arranged on the outer wall of the conversion shell 2 37 relative to the water outlet pipe 35, and a channel 2 42 is penetrated by the rotating core 2 38, and the two ends of the channel 2 42 are respectively arranged on the outer wall of the rotating core 2 38.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, the two ends of the primary reverse osmosis membrane 13 are respectively connected to the corresponding water outlet branch pipe 28 and the water inlet branch pipe 36, the two ends of the secondary reverse osmosis membrane 15 are respectively connected to the corresponding water outlet branch pipe 28 and the water inlet branch pipe 36, and the two ends of the tertiary reverse osmosis membrane 17 are respectively connected to the corresponding water outlet branch pipe 28 and the water inlet branch pipe 36.

[0027] like Figure 1 , Figure 2 As shown, the outlet pipe 35 of the first-stage reverse osmosis conversion component 12 is connected to the water inlet pipe 27 of the second-stage reverse osmosis conversion component 14 through a connecting pipe 1 43 , and the outlet pipe 35 of the second-stage reverse osmosis conversion component 14 is connected to the water inlet pipe 27 of the third-stage reverse osmosis conversion component 16 through a connecting pipe 2 44 .

[0028] like Figure 1 , Figure 2 , Figure 4 As shown, the fixing assembly 18 includes a movable sleeve 45, a movable hoop 46, a fixed hoop 47, a fixed rod 48 and a compression spring 49. The upper end of the fixed rod 48 is arranged on the lower wall of the support plate 7. The fixed hoop 47 is a semicircular ring. The fixed hoop 47 is arranged on the upper wall of the support plate 7. The movable sleeve 45 is slidably mounted on the fixed rod 48. The compression spring 49 is mounted on the fixed rod 48. The upper and lower ends of the compression spring 49 are respectively arranged on the lower wall of the support plate 7 and the upper end of the movable sleeve 45. The movable hoop 46 is arranged at the lower end of the movable sleeve 45.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, the connecting pipe 1 43 is provided with a detection pipe 1 50 , and the detection pipe 1 50 is installed with an electromagnetic flowmeter 1 52 and a valve 1 55 ; the connecting pipe 2 44 is provided with a detection pipe 2 51 , and the detection pipe 2 51 is installed with an electromagnetic flowmeter 2 53 and a valve 2 56 .

[0030] like Figure 1 , Figure 2 As shown, an electromagnetic flow meter 54 and a main valve 57 are installed on the outlet pipe 35 of the three-stage reverse osmosis conversion assembly 16.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the primary reverse osmosis membrane 13 is placed in the corresponding movable hoop 46 and fixed hoop 47 , the secondary reverse osmosis membrane 15 is placed in the corresponding movable hoop 46 and fixed hoop 47 , and the tertiary reverse osmosis membrane 17 is placed in the corresponding movable hoop 46 and fixed hoop 47 .

[0032] When in use, in the initial state, one end of the channel 1 34 of the rotating core 1 30 in the first-stage reverse osmosis conversion assembly 12, the second-stage reverse osmosis conversion assembly 14 and the third-stage reverse osmosis conversion assembly 16 is aligned with the water inlet pipe 27, and the other end of the channel 1 34 of the rotating core 1 30 is aligned with one of the water outlet branches 28; The external water is connected to the water inlet pipe 27 of the primary reverse osmosis conversion component 12, and the water enters the primary reverse osmosis membrane 13 through the channel 1 34 and the water outlet branch pipe 28. After the primary filtration, the filtered water enters the water inlet branch pipe 36, and then enters the channel 2 42 of the rotating core 2 38, and then enters the water outlet pipe 35 through the channel 2 42, and then enters the connecting pipe 1 43 through the water outlet pipe 35, and enters the water inlet pipe 27 of the secondary reverse osmosis conversion component 14 through the connecting pipe 1 43. The filtered water enters the secondary reverse osmosis membrane 15 through the channel 1 34 and the water outlet branch pipe 28, and after the secondary filtration, the filtered water enters the secondary reverse osmosis membrane 15 through the channel 1 34 and the water outlet branch pipe 28. After that, the filtered water enters the water inlet branch pipe 36, then enters the channel 2 42 of the rotating core 2 38, enters the water outlet pipe 35 through the channel 2 42, enters the connecting pipe 2 44 through the water outlet pipe 35, enters the water inlet pipe 27 of the three-stage reverse osmosis conversion component 16 through the connecting pipe 2 44, and enters the three-stage reverse osmosis membrane 17 through the channel 1 34 and the water outlet branch pipe 28. After three-stage filtration, the filtered water enters the water inlet branch pipe 36, then enters the channel 2 42 of the rotating core 2 38, enters the water outlet pipe 35 through the channel 2 42, and then the pure water is discharged from the water outlet pipe 35; Observe the reading of electromagnetic flowmeter 3 54. When the reading of electromagnetic flowmeter 3 54 decreases to the set value, close the main valve 57, open valve 1 55, and observe the reading of electromagnetic flowmeter 1 52. If the reading of electromagnetic flowmeter 1 52 is normal, it means that the primary reverse osmosis membrane 13 does not need to be replaced. If the reading of electromagnetic flowmeter 1 52 is less than the set value, it means that the primary reverse osmosis membrane 13 needs to be replaced. Close valve 1 55 and replace the primary reverse osmosis membrane 13. Open the main valve 57. If the reading of electromagnetic flowmeter 3 54 is normal, it means that the secondary reverse osmosis membrane 15 and the tertiary reverse osmosis membrane 17 do not need to be replaced. If the reading of electromagnetic flowmeter 3 54 is still less than the set value, it means that the secondary reverse osmosis membrane 15 and the tertiary reverse osmosis membrane 17 do not need to be replaced. At the set value, close valve one 55, open valve two 56, observe the reading of electromagnetic flowmeter two 53, if the reading of electromagnetic flowmeter two 53 is normal, it means that the secondary reverse osmosis membrane 15 does not need to be replaced, and the tertiary reverse osmosis membrane 17 needs to be replaced. If the reading of electromagnetic flowmeter two 53 is less than the set value, it means that the secondary reverse osmosis membrane 15 needs to be replaced, close valve two 56, replace the secondary reverse osmosis membrane 15, open the main valve, observe the reading of electromagnetic flowmeter three 54, if the reading of electromagnetic flowmeter three 54 is normal, it means that the tertiary reverse osmosis membrane 17 does not need to be replaced, if the reading of current flowmeter three is less than the set value, replace the tertiary reverse osmosis membrane 17; When it is necessary to replace the primary reverse osmosis membrane 13, the secondary reverse osmosis membrane 15 and the tertiary reverse osmosis membrane 17, turn on the transmission motor 24, the transmission motor 24 drives the driving shaft 23 to rotate, the driving shaft 23 drives the reciprocating gear 25 to rotate, the reciprocating gear 25 is meshed with the reciprocating rack 26, the reciprocating rack 26 drives the reciprocating frame 22 to move toward one end, the reciprocating frame 22 drives the transmission rack 1 33 and the transmission rack 2 41 to move, the transmission rack 1 33 drives the conversion gear 1 32 to rotate, the conversion gear 1 32 drives the conversion shaft 1 31 to rotate, the conversion shaft 1 31 drives the rotating core 1 30 to rotate, and at this time, the two ends of the channel 1 34 are respectively connected to the rotary core 1 30. The water inlet pipe 27 is connected to another water outlet branch pipe 28, and at the same time, the transmission rack 2 41 drives the conversion gear 2 40 to rotate, the conversion gear 2 40 drives the conversion shaft 2 39 to rotate, and the conversion shaft 2 39 drives the rotating core 2 38 to rotate. At this time, after the channel 2 42 rotates an angle, its two ends are respectively connected to the water outlet pipe 35 and another water inlet branch pipe 36. At this time, another primary reverse osmosis membrane 13 (secondary reverse osmosis membrane 15, tertiary reverse osmosis membrane 17) plays a filtering role. The maintenance personnel pull up the movable sleeve 45 to replace the used primary reverse osmosis membrane 13 (secondary reverse osmosis membrane 15, tertiary reverse osmosis membrane 17).

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0035] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A parallel multi-stage reverse osmosis ultrapure water preparation system, comprising a base (1), wherein a placement rack (2) is provided on the upper wall of the base (1), and a support rack (3) is provided on the upper wall of the base (1), wherein the support rack (3) is symmetrically arranged on both sides of the placement rack (2), wherein the placement rack (2) is composed of vertical rods (4) and horizontal rods (5), wherein the vertical rods (4) are symmetrically arranged on the upper wall of the base (1), and the horizontal rods (5) are arranged in an array between the inner side walls of the vertical rods (4), and the support rack (3) comprises a frame (6), a support plate (7) and a support platform (8), wherein the frame (6) is arranged in a door frame shape, and wherein: The frame (6) is symmetrically arranged on the upper wall of the base (1), the frame (6) is symmetrically arranged on both sides of the placement rack (2), the support plates (7) are arranged in pairs, the support plates (7) are arranged at equal intervals on the outer wall of the frame (6), the support platforms (8) are arranged in pairs, the support platforms (8) are arranged at equal intervals on the inner wall of the frame (6), and the placement rack (2) is provided with a first-stage reverse osmosis filtration mechanism (9), a second-stage reverse osmosis filtration mechanism (10) and a third-stage reverse osmosis filtration mechanism (11) in sequence on the horizontal plates from top to bottom, the first-stage reverse osmosis filtration mechanism (9), the second-stage reverse osmosis filtration mechanism (10) and the third-stage reverse osmosis filtration mechanism (11) in sequence, and the first-stage reverse osmosis filtration mechanism (11) is provided on the horizontal plates from top to bottom. The reverse osmosis filtering mechanism (9) is composed of a primary reverse osmosis conversion assembly (12) and two primary reverse osmosis membranes (13); the secondary reverse osmosis filtering mechanism (10) is composed of a secondary reverse osmosis conversion assembly (14) and two secondary reverse osmosis membranes (15); the tertiary reverse osmosis filtering mechanism (11) is composed of a tertiary reverse osmosis conversion assembly (16) and two tertiary reverse osmosis membranes (17); wherein the primary reverse osmosis conversion assembly (12), the secondary reverse osmosis conversion assembly (14) and the tertiary reverse osmosis conversion assembly (16) have the same structure; A fixing assembly (18) is provided between two adjacent support plates (7), and the first-stage reverse osmosis membrane (13), the second-stage reverse osmosis membrane (15) and the third-stage reverse osmosis membrane (17) are respectively provided on the fixing assembly (18); The primary reverse osmosis conversion assembly (12) comprises a conversion transmission assembly (19), a water inlet converter (20) and a water outlet converter (21), wherein the conversion transmission assembly (19) is arranged between two support frames (3), the water inlet converter (20) is arranged on an upper wall at one end of the cross bar (5), and the water outlet converter (21) is arranged on an upper wall at the other end of the cross bar (5); The two first-stage reverse osmosis membranes (13) are arranged in parallel between the water inlet converter (20) and the water outlet converter (21) in the first-stage reverse osmosis conversion assembly (12); the two second-stage reverse osmosis membranes (15) are arranged in parallel between the water inlet converter (20) and the water outlet converter (21) in the second-stage reverse osmosis conversion assembly (14); and the two third-stage reverse osmosis membranes (17) are arranged in parallel between the water inlet converter (20) and the water outlet converter (21) in the third-stage reverse osmosis conversion assembly (16).

2. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 1, characterized in that: The conversion transmission assembly (19) comprises a reciprocating frame (22), a driving shaft (23), a transmission motor (24), a reciprocating gear (25) and a reciprocating rack (26); the driving shaft (23) is arranged on the cross bar (5) through the cross bar (5); the transmission motor (24) is arranged on the lower wall of the cross bar (5); the transmission motor (24) is connected to the lower end of the driving shaft (23); the reciprocating gear (25) is arranged on the upper end of the driving shaft (23); a slot (58) is provided on the end surface of the support platform (8); two sides of the reciprocating frame (22) are slidably arranged in the slot (58) of the support platform (8); the reciprocating rack (26) is arranged on an inner side wall of one side of the middle part of the reciprocating frame (22); and the reciprocating rack (26) is meshed with the reciprocating gear (25).

3. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 2, characterized in that: The water inlet converter (20) comprises a water inlet pipe (27), a water outlet branch pipe (28), a conversion housing (29), a rotating core (30), a conversion shaft (31), a conversion gear (32) and a transmission rack (33). The conversion housing (29) is arranged on an upper wall at one end of the placement frame (2). The conversion housing (29) is a circular cylindrical hollow structure. The rotating core (30) is rotatably arranged in the conversion housing (29). The lower end of the conversion shaft (31) is arranged on the upper end surface of the rotating core (30). The conversion shaft (31) passes through the conversion housing (29). 9), the conversion gear 1 (32) is arranged at the upper end of the conversion shaft 1 (31), the transmission rack 1 (33) is arranged on the inner side wall of one end of the reciprocating frame (22), the transmission rack 1 (33) is meshed with the conversion gear 1 (32), the water inlet pipe (27) is arranged on the outer wall of the conversion shell 1 (29), the water outlet branch pipe (28) is symmetrically arranged on the outer wall of the conversion shell 1 (29) relative to the water inlet pipe (27), and a channel 1 (34) is penetrated by the rotating core 1 (30), and the two ends of the channel 1 (34) are respectively arranged on the outer side wall of the rotating core 1 (30).

4. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 3, characterized in that: The water outlet converter (21) comprises a water outlet pipe (35), a water inlet branch pipe (36), a second conversion housing (37), a second rotating core (38), a second conversion shaft (39), a second conversion gear (40) and a second transmission rack (41); the second conversion housing (37) is arranged on the upper wall of the other end of the placement frame (2); the second conversion housing (37) is a circular cylindrical hollow structure; the second rotating core (38) is rotatably arranged in the second conversion housing (37); the lower end of the second conversion shaft (39) is arranged on the upper end surface of the second rotating core (38); the second conversion shaft (39) passes through the upper wall of the second conversion housing (37); The second conversion gear (40) is arranged at the upper end of the second conversion shaft (39), the second transmission rack (41) is arranged on the inner side wall of the other end of the reciprocating frame (22) opposite to the first transmission rack (33), the second transmission rack (41) is meshed with the second conversion gear (40), the water outlet pipe (35) is arranged on the outer wall of the second conversion shell (37), the water inlet branch pipe (36) is symmetrically arranged on the outer wall of the second conversion shell (37) relative to the water outlet pipe (35), and the second channel (42) is penetrated by the second rotating core (38), and the two ends of the second channel (42) are respectively arranged on the outer side wall of the second rotating core (38).

5. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 4, characterized in that: The two ends of the primary reverse osmosis membrane (13) are respectively connected to the corresponding water outlet branch pipe (28) and the water inlet branch pipe (36); the two ends of the secondary reverse osmosis membrane (15) are respectively connected to the corresponding water outlet branch pipe (28) and the water inlet branch pipe (36); and the two ends of the tertiary reverse osmosis membrane (17) are respectively connected to the corresponding water outlet branch pipe (28) and the water inlet branch pipe (36).

6. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 5, characterized in that: The water outlet pipe (35) of the first-stage reverse osmosis conversion assembly (12) and the water inlet pipe (27) of the second-stage reverse osmosis conversion assembly (14) are connected together via a first connecting pipe (43), and the water outlet pipe (35) of the second-stage reverse osmosis conversion assembly (14) and the water inlet pipe (27) of the third-stage reverse osmosis conversion assembly (16) are connected together via a second connecting pipe (44).

7. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 6, characterized in that: The fixing assembly (18) comprises a movable sleeve (45), a movable hoop (46), a fixing hoop (47), a fixing rod (48) and a compression spring (49); the upper end of the fixing rod (48) is arranged on the lower wall of the support plate (7); the fixing hoop (47) is in a semicircular shape; the fixing hoop (47) is arranged on the upper wall of the support plate (7); the movable sleeve (45) is slidably sleeved on the fixing rod (48); the compression spring (49) is sleeved on the fixing rod (48); the upper end and the lower end of the compression spring (49) are respectively arranged on the lower wall of the support plate (7) and the upper end of the movable sleeve (45); the movable hoop (46) is arranged on the lower end of the movable sleeve (45).

8. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 7, characterized in that: The connecting pipe 1 (43) is provided with a detection pipe 1 (50), and the detection pipe 1 (50) is installed with an electromagnetic flowmeter 1 (52) and a valve 1 (55); the connecting pipe 2 (44) is provided with a detection pipe 2 (51), and the detection pipe 2 (51) is installed with an electromagnetic flowmeter 2 (53) and a valve 2 (56).

9. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 8, characterized in that: An electromagnetic flow meter (54) and a main valve (57) are installed on the water outlet pipe (35) of the three-stage reverse osmosis conversion assembly (16).

10. A parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 9, characterized in that: The primary reverse osmosis membrane (13) is placed in a corresponding movable hoop (46) and a fixed hoop (47), the secondary reverse osmosis membrane (15) is placed in a corresponding movable hoop (46) and a fixed hoop (47), and the tertiary reverse osmosis membrane (17) is placed in a corresponding movable hoop (46) and a fixed hoop (47).

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