A parallel multi-stage reverse osmosis ultra-pure water preparation system

Abstract

The present invention belongs to the technical field of ultrapure water preparation, and specifically discloses a parallel multi-stage reverse osmosis ultrapure water preparation system, which includes a base. A placement rack is provided on the upper wall of the base, and a support frame is provided on the upper wall of the base. The support frames are symmetrically arranged on both sides of the placement rack. The placement rack is composed of vertical rods and horizontal rods. The vertical rods are symmetrically arranged on the upper wall of the base, and the horizontal rods are arranged in an array between the inner side walls of the vertical rods. The support frame includes a frame, a support plate and a support table. A primary reverse osmosis filtration mechanism, a secondary reverse osmosis filtration mechanism and a tertiary reverse osmosis filtration mechanism are sequentially arranged on the horizontal plates of the placement rack from top to bottom. The present invention has multiple reverse osmosis membranes, and each stage of reverse osmosis membranes is in parallel. The reverse osmosis membranes that need to be replaced in each stage are judged by an electromagnetic flowmeter and automatically replaced, saving costs and greatly improving the efficiency of ultrapure water preparation.

Description

Technical Field

[0001] The present 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 steps such as pretreatment (filtration, softening, etc.), anion / cation removal, mixed bed ion removal, UV sterilization, transportation and storage, etc. Each step requires strict control and detection. Reverse osmosis (RO) specifically pushes the water at each stage through a reverse osmosis membrane under high pressure for filtration and removal of dissolved solids, organic substances, bacteria, viruses and other debris therein, thereby obtaining relatively pure water.

[0003] The essence of the reverse osmosis membrane belongs to a filter mesh structure. After long-term use, that is, when the reverse osmosis membrane reaches the upper limit of its service capacity, its filtering effect is greatly reduced or even unable to filter normally. Therefore, the reverse osmosis membrane needs to be replaced after long-term use. In the prior art, when replacing the reverse osmosis membrane, the equipment needs to be shut down. In addition, during the preparation process of ultrapure water, the relative content of debris in the water in each step is not measurable, so the operating state and service efficiency of the reverse osmosis membrane cannot be intuitively displayed, and it is impossible to judge 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 in each stage need to be replaced simultaneously.

[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 multi-stage reverse osmosis membranes, and each stage of reverse osmosis membrane is in parallel. The reverse osmosis membranes that need to be replaced in each stage are judged by an electromagnetic flowmeter and automatically replaced, saving costs and greatly improving the efficiency of ultrapure water preparation.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a parallel multi-stage reverse osmosis ultra-pure water preparation system, including a base. A placement rack is provided on the upper wall of the base, and a support frame is provided on the upper wall of the base. The support frames are symmetrically arranged on both sides of the placement rack. The placement rack is composed of vertical rods and horizontal rods. The vertical rods are symmetrically arranged on the upper wall of the base, and the horizontal rods are arranged in an array between the inner side walls of the vertical rods. The support frame includes a frame, a support plate, and a support table. The frame is arranged in a door frame shape and is symmetrically arranged on the upper wall of the base and on both sides of the placement rack. The support plates are arranged in pairs and are equidistantly arranged on the outer side wall of the frame. The support tables are arranged in pairs and are equidistantly arranged on the inner side wall of the frame. An primary reverse osmosis filtration mechanism, a secondary reverse osmosis filtration mechanism, and a tertiary reverse osmosis filtration mechanism are successively arranged on the horizontal rods of the placement rack from top to bottom. The primary reverse osmosis filtration mechanism consists of a primary reverse osmosis conversion component and two primary reverse osmosis membranes. The secondary reverse osmosis filtration mechanism consists of a secondary reverse osmosis conversion component and two secondary reverse osmosis membranes. The tertiary reverse osmosis filtration mechanism consists of a tertiary reverse osmosis conversion component and two tertiary reverse osmosis membranes. The structures of the primary reverse osmosis conversion component, the secondary reverse osmosis conversion component, and the tertiary reverse osmosis conversion component are the same;

[0007] A fixing component is arranged between two adjacent support plates, and the primary reverse osmosis membrane, the secondary reverse osmosis membrane, and the tertiary reverse osmosis membrane are respectively arranged on the fixing component;

[0008] The primary reverse osmosis conversion component includes a conversion transmission component, a water inlet converter, and a water outlet converter. The conversion transmission component is arranged between two support frames. The water inlet converter is arranged on the upper wall of one end of the horizontal rod, and the water outlet converter is arranged on the upper wall of the other end of the horizontal rod;

[0009] The two primary reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the primary reverse osmosis conversion component. The two secondary reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the secondary reverse osmosis conversion component. The two tertiary reverse osmosis membranes are arranged in parallel between the water inlet converter and the water outlet converter in the tertiary reverse osmosis conversion component.

[0010] Furthermore, the conversion transmission component includes a reciprocating frame, a driving shaft, a driving motor, a reciprocating gear, and a reciprocating rack. The driving shaft penetrates through the horizontal rod. The driving motor is arranged on the lower wall of the horizontal rod and is connected to the lower end of the driving shaft. The reciprocating gear is arranged on the upper end of the driving shaft. A clamping groove is arranged on the end face of the support table. The two sides of the reciprocating frame are slidably arranged in the clamping groove of the support table. The reciprocating rack is arranged on the inner side wall of one side of the middle of the reciprocating frame and meshes with the reciprocating gear.

[0011] Further, the water inlet converter includes a water inlet pipe, a water outlet branch pipe, a first conversion housing, a first rotating core, a first conversion shaft, a first conversion gear, and a first transmission rack. The first conversion housing is disposed on the upper wall at one end of the placement rack. The first conversion housing is a hollow circular cylindrical structure. The first rotating core is rotatably disposed inside the first conversion housing. The lower end of the first conversion shaft is disposed on the upper end surface of the first rotating core. The first conversion shaft penetrates through the upper wall of the first conversion housing. The first conversion gear is disposed on the upper end of the first conversion shaft. The first transmission rack is disposed on the inner side wall at one end of the reciprocating frame. The first transmission rack meshes with the first conversion gear. The water inlet pipe is disposed on the outer wall of the first conversion housing. The water outlet branch pipe is symmetrically disposed on the outer wall of the first conversion housing relative to the water inlet pipe. A first channel is disposed through the first rotating core, and both ends of the first channel are respectively disposed on the outer side wall of the first rotating core.

[0012] Further, the water outlet converter includes a water outlet pipe, a water inlet branch pipe, a second conversion housing, a second rotating core, a second conversion shaft, a second conversion gear, and a second transmission rack. The second conversion housing is disposed on the upper wall at the other end of the placement rack. The second conversion housing is a hollow circular cylindrical structure. The second rotating core is rotatably disposed inside the second conversion housing. The lower end of the second conversion shaft is disposed on the upper end surface of the second rotating core. The second conversion shaft penetrates through the upper wall of the second conversion housing. The second conversion gear is disposed on the upper end of the second conversion shaft. The second transmission rack is disposed on the inner side wall at the other end of the reciprocating frame opposite to the first transmission rack. The second transmission rack meshes with the second conversion gear. The water outlet pipe is disposed on the outer wall of the second conversion housing. The water inlet branch pipe is symmetrically disposed on the outer wall of the second conversion housing relative to the water outlet pipe. A second channel is disposed through the second rotating core, and both ends of the second channel are respectively disposed on the outer side wall of the second rotating core.

[0013] Further, both ends of the first-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe. Both ends of the second-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe. Both ends of the third-stage reverse osmosis membrane are respectively connected to the corresponding water outlet branch pipe and water inlet branch pipe.

[0014] Further, the water outlet pipe of the first-stage reverse osmosis conversion assembly and the water inlet pipe of the second-stage reverse osmosis conversion assembly are connected together through a first connecting pipe. The water outlet pipe of the second-stage reverse osmosis conversion assembly and the water inlet pipe of the third-stage reverse osmosis conversion assembly are connected together through a second connecting pipe.

[0015] Further, the fixing assembly includes a movable sleeve, a movable hoop, a fixing hoop, a fixing rod, and a compression spring. The upper end of the fixing rod is disposed on the lower wall of the support plate. The fixing hoop is semi-circular ring-shaped and is disposed on the upper wall of the support plate. The movable sleeve is slidably sleeved on the fixing rod. The compression spring is sleeved on the fixing rod. The upper end and the lower end of the compression spring are respectively disposed on the lower wall of the support plate and the upper end of the movable sleeve. The movable hoop is disposed at the lower end of the movable sleeve.

[0016] Further, a first detection pipe is provided on the first connecting pipe, and an electromagnetic flowmeter I and a first valve are installed on the first detection pipe. A second detection pipe is provided on the second connecting pipe, and an electromagnetic flowmeter II and a second valve are installed on the second detection pipe.

[0017] Further, an electromagnetic flowmeter III and a main valve are installed on the water outlet pipe of the three-stage reverse osmosis conversion assembly.

[0018] Further, the first-stage reverse osmosis membrane is placed in corresponding movable hoops and fixed hoops, the second-stage reverse osmosis membrane is placed in corresponding movable hoops and fixed hoops, and the third-stage reverse osmosis membrane is placed in corresponding movable hoops and fixed hoops.

[0019] The beneficial effects achieved by the present invention with the above structure are as follows:

[0020] 1. A multi-stage reverse osmosis structure using a first-stage reverse osmosis membrane, a second-stage reverse osmosis membrane, and a third-stage reverse osmosis membrane is adopted. The reverse osmosis membranes at all levels are connected in series, and are connected in parallel between each two levels of reverse osmosis membranes. Water can be filtered in multiple layers, the reverse osmosis membrane that needs to be replaced can be judged, and the reverse osmosis membranes between each two levels are used alternately;

[0021] 2. By using the reciprocating motion of the reciprocating gear and the reciprocating rack, the first transmission rack and the second transmission rack are driven to reciprocate, and further the forward and reverse rotations of the first conversion gear and the second conversion gear are driven, and then the forward and reverse rotations of the first rotating core and the second rotating core are controlled, so that water can be controlled to enter the reverse osmosis membrane that needs to be replaced, and the replacement of the reverse osmosis membrane can be automatically realized;

[0022] 3. An electromagnetic flowmeter I is provided on the first connecting pipe between the first-stage reverse osmosis conversion assembly and the second-stage reverse osmosis conversion assembly, an electromagnetic flowmeter II is provided on the second connecting pipe between the second-stage reverse osmosis conversion assembly and the third-stage reverse osmosis conversion assembly, and an electromagnetic flowmeter III is provided on the water outlet pipe of the third-stage reverse osmosis conversion assembly. By controlling the opening and closing of the first valve, the second valve, and the main valve, and observing the readings of the electromagnetic flowmeter I, the electromagnetic flowmeter II, and the electromagnetic flowmeter III at the same time, the reverse osmosis membrane that needs to be replaced can be judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic three-dimensional structure diagram of a parallel multi-stage reverse osmosis ultrapure water preparation system proposed by the present invention;

[0024] Figure 2 is Figure 1 the front view of;

[0025] Figure 3 is Figure 1 the top view of;

[0026] Figure 4 is a schematic three-dimensional structure diagram of the support frame and the fixing assembly;

[0027] Figure 5 is a three-dimensional structural schematic diagram of a primary reverse osmosis filtration mechanism (secondary reverse osmosis filtration mechanism, tertiary reverse osmosis filtration mechanism);

[0028] Figure 6 is Figure 5 the front view of;

[0029] Figure 7 is Figure 5 the top view of;

[0030] Figure 8 is Figure 6 the schematic diagram of the A-A cross-section in;

[0031] Figure 9 is Figure 8 the enlarged view of part B in;

[0032] Figure 10 is Figure 8 the enlarged view of part C in.

[0033] Among them, 1. base, 2. placement rack, 3. support frame, 4. vertical rod, 5. horizontal 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 drive component, 20. water inlet converter, 21. water outlet converter, 22. reciprocating frame, 23. driving shaft, 24. drive 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. drive rack one, 34. channel one, 35. water outlet pipe, 36. water inlet branch pipe, 37. conversion housing two, 38. rotating core two, 39. conversion shaft two, 40. conversion gear two, 41. drive 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 pipe one, 51. detection pipe two, 52. electromagnetic flowmeter one, 53. electromagnetic flowmeter two, 54. electromagnetic flowmeter three, 55. valve one, 56. valve two, 57. main valve, 58. card slot.

[0034] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Detailed Embodiments

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship 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 orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0037] As Figure 1 shown, the present invention provides 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 frame 3 is provided on the upper wall of the base 1. The support frame 3 is symmetrically arranged on both sides of the placement rack 2. The placement rack 2 is composed of vertical rods 4 and cross rods 5. The vertical rods 4 are symmetrically arranged on the upper wall of the base 1. The cross rods 5 are arranged in an array between the inner side walls of the vertical rods 4. The support frame 3 includes a frame 6, support plates 7 and a support platform 8. The frame 6 is arranged in a door frame shape. 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 equidistantly arranged on the outer side walls of the frame 6. The support platforms 8 are arranged in pairs. The support platforms 8 are equidistantly arranged on the inner side walls of the frame 6. An first-stage reverse osmosis filtration mechanism 9, a second-stage reverse osmosis filtration mechanism 10 and a third-stage reverse osmosis filtration mechanism 11 are successively arranged on the cross rods 5 of the placement rack 2 from top to bottom. The first-stage reverse osmosis filtration mechanism 9 is composed of a first-stage reverse osmosis conversion assembly 12 and two first-stage reverse osmosis membranes 13. The second-stage reverse osmosis filtration mechanism 10 is composed of a second-stage reverse osmosis conversion assembly 14 and two second-stage reverse osmosis membranes 15. The third-stage reverse osmosis filtration mechanism 11 is composed of a third-stage reverse osmosis conversion assembly 16 and two third-stage reverse osmosis membranes 17. The structures of 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 are the same.

[0038] A fixing component 18 is arranged between two adjacent support plates 7. The first-stage reverse osmosis membrane 13, the second-stage reverse osmosis membrane 15 and the third-stage reverse osmosis membrane 17 are respectively arranged on the fixing component 18.

[0039] The primary reverse osmosis conversion assembly 12 includes a conversion drive assembly 19, a water inlet converter 20, and a water outlet converter 21. The conversion drive assembly 19 is arranged between two support frames 3. The water inlet converter 20 is arranged on the upper wall of one end of the cross bar 5, and the water outlet converter 21 is arranged on the upper wall of the other end of the cross bar 5;

[0040] Two primary reverse osmosis membranes 13 are connected in parallel between the water inlet converter 20 and the water outlet converter 21 in the primary reverse osmosis conversion assembly 12. Two secondary reverse osmosis membranes 15 are connected in parallel between the water inlet converter 20 and the water outlet converter 21 in the secondary reverse osmosis conversion assembly 14. Two tertiary reverse osmosis membranes 17 are connected in parallel between the water inlet converter 20 and the water outlet converter 21 in the tertiary reverse osmosis conversion assembly 16.

[0041] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 As shown, the conversion drive assembly 19 includes a reciprocating frame 22, a driving shaft 23, a drive motor 24, a reciprocating gear 25, and a reciprocating rack 26. The driving shaft 23 is arranged through the cross bar 5. The drive motor 24 is arranged on the lower wall of the cross bar 5. The drive 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. A clamping groove 58 is arranged on the end face of the support platform 8. Both sides of the reciprocating frame 22 are slidably arranged in the clamping groove 58 of the support platform 8. The reciprocating rack 26 is arranged on the inner side wall of one side of the middle of the reciprocating frame 22. The reciprocating rack 26 meshes with the reciprocating gear 25.

[0042] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 8 、 Figure 9 、 Figure 10As shown, the water inlet converter 20 includes a water inlet pipe 27, a water outlet branch pipe 28, a first conversion housing 29, a first rotating core 30, a first conversion shaft 31, a first conversion gear 32, and a first transmission rack 33. The first conversion housing 29 is provided on the upper wall at one end of the placement rack 2. The first conversion housing 29 is a hollow circular cylinder structure. The first rotating core 30 is rotatably provided inside the first conversion housing 29. The lower end of the first conversion shaft 31 is provided on the upper end surface of the first rotating core 30. The first conversion shaft 31 penetrates through the upper wall of the first conversion housing 29. The first conversion gear 32 is provided at the upper end of the first conversion shaft 31. The first transmission rack 33 is provided on the inner side wall at one end of the reciprocating frame 22. The first transmission rack 33 meshes with the first conversion gear 32. The water inlet pipe 27 is provided on the outer wall of the first conversion housing 29. The water outlet branch pipe 28 is symmetrically provided on the outer wall of the first conversion housing 29 relative to the water inlet pipe 27. A first channel 34 is provided through the first rotating core 30. Both ends of the first channel 34 are respectively provided on the outer side wall of the first rotating core 30.

[0043] As Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 , Figure 10 As shown, the water outlet converter 21 includes 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 provided on the upper wall at the other end of the placement rack 2. The second conversion housing 37 is a hollow circular cylinder structure. The second rotating core 38 is rotatably provided inside the second conversion housing 37. The lower end of the second conversion shaft 39 is provided on the upper end surface of the second rotating core 38. The second conversion shaft 39 penetrates through the upper wall of the second conversion housing 37. The second conversion gear 40 is provided at the upper end of the second conversion shaft 39. The second transmission rack 41 is provided on the inner side wall at the other end of the reciprocating frame 22 opposite to the first transmission rack 33. The second transmission rack 41 meshes with the second conversion gear 40. The water outlet pipe 35 is provided on the outer wall of the second conversion housing 37. The water inlet branch pipe 36 is symmetrically provided on the outer wall of the second conversion housing 37 relative to the water outlet pipe 35. A second channel 42 is provided through the second rotating core 38. Both ends of the second channel 42 are respectively provided on the outer side wall of the second rotating core 38.

[0044] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, both ends of the first-stage reverse osmosis membrane 13 are respectively connected to the corresponding water outlet branch pipe 28 and water inlet branch pipe 36. Both ends of the second-stage reverse osmosis membrane 15 are respectively connected to the corresponding water outlet branch pipe 28 and water inlet branch pipe 36. Both ends of the third-stage reverse osmosis membrane 17 are respectively connected to the corresponding water outlet branch pipe 28 and water inlet branch pipe 36.

[0045] As Figure 1 、 Figure 2 shown, the water outlet pipe 35 of the primary reverse osmosis conversion module 12 is connected to the water inlet pipe 27 of the secondary reverse osmosis conversion module 14 through a first connecting pipe 43, and the water outlet pipe 35 of the secondary reverse osmosis conversion module 14 is connected to the water inlet pipe 27 of the tertiary reverse osmosis conversion module 16 through a second connecting pipe 44.

[0046] As Figure 1 、 Figure 2 、 Figure 4 shown, the fixing assembly 18 includes 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 provided on the lower wall of the support plate 7. The fixing hoop 47 is semi-circular and is provided 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, and the upper end and the lower end of the compression spring 49 are respectively provided on the lower wall of the support plate 7 and the upper end of the movable sleeve 45. The movable hoop 46 is provided at the lower end of the movable sleeve 45.

[0047] As Figure 1 、 Figure 2 、 Figure 3 shown, a first detection pipe 50 is provided on the first connecting pipe 43, and an electromagnetic flowmeter one 52 and a valve one 55 are installed on the first detection pipe 50. A second detection pipe 51 is provided on the second connecting pipe 44, and an electromagnetic flowmeter two 53 and a valve two 56 are installed on the second detection pipe 51.

[0048] As Figure 1 、 Figure 2 shown, an electromagnetic flowmeter three 54 and a main valve 57 are installed on the water outlet pipe 35 of the tertiary reverse osmosis conversion module 16.

[0049] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 shown, the primary reverse osmosis membrane 13 is placed in the corresponding movable hoop 46 and fixing hoop 47, the secondary reverse osmosis membrane 15 is placed in the corresponding movable hoop 46 and fixing hoop 47, and the tertiary reverse osmosis membrane 17 is placed in the corresponding movable hoop 46 and fixing hoop 47.

[0050] During specific use, in the initial state, one end of the channel 34 of the first rotating core 30 in the primary reverse osmosis conversion module 12, the secondary reverse osmosis conversion module 14 and the tertiary reverse osmosis conversion module 16 is aligned with the water inlet pipe 27, and the other end of the channel 34 of the first rotating core 30 is aligned with one of the water outlet branch pipes 28;

[0051] 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;

[0052] 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;

[0053] 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, the drive motor 24 is turned on. The drive motor 24 drives the rotation of the main shaft 23, and the main shaft 23 drives the rotation of the reciprocating gear 25. The reciprocating gear 25 meshes with the reciprocating rack 26, and the reciprocating rack 26 drives the reciprocating frame 22 to move towards one end. The reciprocating frame 22 drives the first transmission rack 33 and the second transmission rack 41 to move. The first transmission rack 33 drives the rotation of the first conversion gear 32, the first conversion gear 32 drives the rotation of the first conversion shaft 31, and the first conversion shaft 31 drives the rotation of the first rotating core 30. At this time, the two ends of the first channel 34 are respectively communicated with the water inlet pipe 27 and another water outlet branch pipe 28. At the same time, the second transmission rack 41 drives the rotation of the second conversion gear 40, the second conversion gear 40 drives the rotation of the second conversion shaft 39, and the second conversion shaft 39 drives the rotation of the second rotating core 38. After the second channel 42 rotates by an angle, its two ends are respectively communicated with 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, and 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).

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

[0056] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A parallel multi-stage reverse osmosis ultra-pure water preparation system, comprising a base (1), on the upper wall of the base (1) there is a placement rack (2), on the upper wall of the base (1) there is a support frame (3), the support frame (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), the vertical rods (4) are symmetrically arranged on the upper wall of the base (1), the horizontal rods (5) are arranged in an array between the inner side walls of the vertical rods (4), the support frame (3) includes a frame (6), a support plate (7) and a support table (8), the frame (6) is arranged in a door frame shape, and it is characterized in that: 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 and are equidistantly arranged on the outer side wall of the frame (6). The support platforms (8) are arranged in pairs and are equidistantly arranged on the inner side wall of the frame (6). On the cross bar (5) of the placement rack (2) from top to bottom, a primary reverse osmosis filtration mechanism (9), a secondary reverse osmosis filtration mechanism (10), and a tertiary reverse osmosis filtration mechanism (11) are successively arranged. The primary reverse osmosis filtration mechanism (9) consists of a primary reverse osmosis conversion component (12) and two primary reverse osmosis membranes (13). The secondary reverse osmosis filtration mechanism (10) consists of a secondary reverse osmosis conversion component (14) and two secondary reverse osmosis membranes (15). The tertiary reverse osmosis filtration mechanism (11) consists of a tertiary reverse osmosis conversion component (16) and two tertiary reverse osmosis membranes (17). Among them, the structures of the primary reverse osmosis conversion component (12), the secondary reverse osmosis conversion component (14), and the tertiary reverse osmosis conversion component (16) are the same; A fixing component (18) is arranged between two adjacent support plates (7). The primary reverse osmosis membrane (13), the secondary reverse osmosis membrane (15), and the tertiary reverse osmosis membrane (17) are respectively arranged on the fixing component (18); The primary reverse osmosis conversion component (12) includes a conversion transmission component (19), a water inlet converter (20), and a water outlet converter (21). The conversion transmission component (19) is arranged between two support frames (3). The water inlet converter (20) is arranged on the upper wall of one end of the cross bar (5). The water outlet converter (21) is arranged on the upper wall of the other end of the cross bar (5); The two primary reverse osmosis membranes (13) are connected in parallel between the water inlet converter (20) and the water outlet converter (21) in the primary reverse osmosis conversion component (12). The two secondary reverse osmosis membranes (15) are connected in parallel between the water inlet converter (20) and the water outlet converter (21) in the secondary reverse osmosis conversion component (14). The two tertiary reverse osmosis membranes (17) are connected in parallel between the water inlet converter (20) and the water outlet converter (21) in the tertiary reverse osmosis conversion component (16); The water outlet pipe (35) of the primary reverse osmosis conversion component (12) and the water inlet pipe (27) of the secondary reverse osmosis conversion component (14) are connected together through a first connecting pipe (43). The water outlet pipe (35) of the secondary reverse osmosis conversion component (14) and the water inlet pipe (27) of the tertiary reverse osmosis conversion component (16) are connected together through a second connecting pipe (44); A first detection pipe (50) is arranged on the first connecting pipe (43). An electromagnetic flowmeter one (52) and a valve one (55) are installed on the first detection pipe (50). A second detection pipe (51) is arranged on the second connecting pipe (44). An electromagnetic flowmeter two (53) and a valve two (56) are installed on the second detection pipe (51); An electromagnetic flowmeter three (54) and a main valve (57) are installed on the water outlet pipe (35) of the tertiary reverse osmosis conversion component (16).

2. The parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 1, characterized in that: The conversion and transmission assembly (19) includes a reciprocating frame (22), a driving shaft (23), a driving motor (24), a reciprocating gear (25) and a reciprocating rack (26). The driving shaft (23) is disposed through the cross bar (5). The driving motor (24) is disposed on the lower wall of the cross bar (5). The driving motor (24) is connected to the lower end of the driving shaft (23). The reciprocating gear (25) is disposed at the upper end of the driving shaft (23). A clamping groove (58) is formed on the end face of the support platform (8). Both sides of the reciprocating frame (22) are slidably disposed in the clamping groove (58) of the support platform (8). The reciprocating rack (26) is disposed on the inner side wall of one side in the middle of the reciprocating frame (22). The reciprocating rack (26) meshes with the reciprocating gear (25).

3. The parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 2, characterized in that: The water inlet converter (20) includes a water inlet pipe (27), a water outlet branch pipe (28), a first conversion housing (29), a first rotating core (30), a first conversion shaft (31), a first conversion gear (32) and a first transmission rack (33). The first conversion housing (29) is disposed on the upper wall at one end of the placement rack (2). The first conversion housing (29) is a hollow circular cylinder structure. The first rotating core (30) is rotatably disposed in the first conversion housing (29). The lower end of the first conversion shaft (31) is disposed on the upper end face of the first rotating core (30). The first conversion shaft (31) penetrates through the upper wall of the first conversion housing (29). The first conversion gear (32) is disposed at the upper end of the first conversion shaft (31). The first transmission rack (33) is disposed on the inner side wall of one end of the reciprocating frame (22). The first transmission rack (33) meshes with the first conversion gear (32). The water inlet pipe (27) is disposed on the outer wall of the first conversion housing (29). The water outlet branch pipe (28) is symmetrically disposed on the outer wall of the first conversion housing (29) relative to the water inlet pipe (27). A first channel (34) is disposed through the first rotating core (30). Both ends of the first channel (34) are respectively disposed on the outer side wall of the first rotating core (30).

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

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

6. A parallel multi-stage reverse osmosis ultra-pure water preparation system according to claim 5, characterized in that: The fixing assembly (18) includes 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 provided on the lower wall of the support plate (7). The fixing hoop (47) is semi-circular ring-shaped. The fixing hoop (47) is provided 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 provided on the lower wall of the support plate (7) and the upper end of the movable sleeve (45). The movable hoop (46) is provided at the lower end of the movable sleeve (45).

7. The parallel multi-stage reverse osmosis ultrapure water preparation system according to claim 6, characterized in that: The primary reverse osmosis membrane (13) is placed inside the corresponding movable hoop (46) and fixing hoop (47). The secondary reverse osmosis membrane (15) is placed inside the corresponding movable hoop (46) and fixing hoop (47). The tertiary reverse osmosis membrane (17) is placed inside the corresponding movable hoop (46) and fixing hoop (47).

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