Ultrafiltration device for a desalination system

Abstract

The application relates to the technical field of water treatment, and discloses a kind of ultrafiltration devices for desalted water system, including water inlet cylinder, ultrafiltration component, the side end surface of water inlet cylinder is fixedly connected with water inlet pipe, air inlet pipe and water outlet pipe, the end close to water inlet pipe in water inlet cylinder inside is fixedly connected with water baffle, the end of pressure water inlet pipe in water inlet cylinder inside is fixedly connected with mounting plate, ultrafiltration component includes ultrafiltration cylinder, pressure regulating rod and cylindrical tube, ultrafiltration cylinder is arranged between water baffle and mounting plate, pressure regulating rod is arranged at the central axis of ultrafiltration cylinder, and two ultrafiltration membranes are symmetrically arranged in the inside of ultrafiltration cylinder.The application is provided with upper and lower ultrafiltration components, when the ultrafiltration membrane is seriously blocked, and the water output starts to change, the ultrafiltration cylinder will rotate, the positions of the two ultrafiltration membranes are exchanged, the water filtering process is alternately carried out, and the ultrafiltration membrane is cleaned in the process, so that the blocking of the filter membrane caused by long use time is avoided, and the water output rate is reduced.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, specifically to an ultrafiltration device for a demineralized water system. Background Technology

[0002] Demineralized water refers to the finished water obtained after removing suspended solids, colloids, and inorganic cations and anions from water using various water treatment processes. Demineralized water does not mean that all salts in the water have been removed. Due to technical reasons and considerations of water production costs, demineralized water is allowed to contain trace amounts of impurities depending on its intended use. The fewer impurities in demineralized water, the higher its purity.

[0003] In existing technologies, ultrafiltration devices used in demineralized water generally use ultrafiltration membranes for filtration. However, during ultrafiltration, pollutants in the feed solution migrate to the membrane surface with the permeate under pressure, which can adsorb or deposit on the membrane surface, increasing the membrane's filtration resistance and thus affecting the membrane's water production. Summary of the Invention

[0004] The purpose of this invention is to provide an ultrafiltration device for a demineralized water system to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an ultrafiltration device for a demineralized water system, comprising an inlet cylinder, an inlet pipe, an air inlet pipe, and an outlet pipe fixedly connected to one end face of the inlet cylinder, a baffle plate fixedly connected to the end of the inlet cylinder near the inlet pipe, and an mounting plate fixedly connected to one end of the pressure inlet pipe inside the inlet cylinder, and further comprising:

[0007] An ultrafiltration module includes an ultrafiltration cartridge, a pressure regulating rod, and a cylindrical cylinder. The ultrafiltration cartridge is positioned between a baffle plate and a mounting plate, and the pressure regulating rod is positioned at the central axis of the ultrafiltration cartridge.

[0008] Two ultrafiltration membranes are symmetrically arranged inside the ultrafiltration cartridge.

[0009] Furthermore, the water inlet pipe is located at the central axis of the water inlet cylinder, the air inlet pipe is located at the top of the water inlet pipe, the water outlet pipe is located at the bottom of the water inlet pipe, valve one is fixedly installed on the water inlet pipe, valve two is fixedly installed on the air inlet pipe, valve three is fixedly installed on the water outlet pipe, and a drain pipe is fixedly connected to the bottom of the side wall of the water inlet cylinder.

[0010] Furthermore, a tube is fixedly connected to the central axis of the side of the baffle plate near the mounting plate. A sleeve is fixedly installed at the end of the tube away from the baffle plate. Several water inlet grooves are evenly opened on the side wall of the end of the tube near the baffle plate. A slot one is opened in the middle of the inner wall of the side of the baffle plate near the tube. A connecting column is fixedly connected between the side wall of the mounting plate away from the baffle plate and the inner wall of the water inlet cylinder. A slot two is opened in the middle of the side of the mounting plate away from the connecting column. A deep hole is opened on the bottom inner wall of the slot two. A square column is fixedly connected to the center of the bottom inner wall of the deep hole. A small piston is fixedly connected to the end of the square column away from the inside of the deep hole.

[0011] Furthermore, a mounting base one is fixedly connected to the middle of the end face of the ultrafiltration cartridge near the baffle plate. Mounting base one is rotatably installed inside the slot one. The insertion tube is slidably installed inside the mounting base one. The water inlet tank is located inside the ultrafiltration cartridge. A mounting base two is fixedly connected to the middle of the end of the ultrafiltration cartridge near the mounting plate. The mounting base two has a threaded hole inside. Mounting base two is rotatably installed inside the slot two. Two pressure valves are symmetrically fixedly installed on the side wall of the ultrafiltration cartridge.

[0012] Furthermore, two baffles are symmetrically fixedly connected to the middle of the inner wall of the ultrafiltration cartridge, and the ultrafiltration membrane is fixedly installed between the side walls on the same side of the two baffles. The two ultrafiltration membranes and the two baffles work together to isolate the ultrafiltration cartridge into upper and lower cavities.

[0013] Furthermore, the pressure regulating rod is slidably disposed inside the sleeve, a large piston is fixedly installed at one end of the pressure regulating rod, the large piston is slidably disposed inside the insertion tube, a circular plate is fixedly connected to the middle of the pressure regulating rod, several insertion rods are fixedly connected to the end of the circular plate away from the large piston, a circular hole is opened inside the pressure regulating rod, and a square hole is opened at the end of the pressure regulating rod away from the circular hole.

[0014] Furthermore, the square column is slidably disposed inside the square hole, the connecting column is slidably disposed inside the round hole, and an annular groove is provided at the end of the pressure adjusting rod away from the large piston. Several slots are provided on the bottom inner wall of the annular groove. A circular ring is rotatably installed inside the annular groove. Several spherical seats are fixedly connected to the outer side wall of the circular ring. A groove is provided on the inner wall of the circular ring, and a spring is fixedly installed inside the groove.

[0015] The cylindrical tube is set inside the threaded hole. A thread 1 is opened on the outer side wall of the cylindrical tube. Further, a thread 2 is opened on the inner wall of the cylindrical tube. The threads of thread 1 and thread 2 are opposite in direction. The cylindrical tube is threaded into the threaded hole through thread 1. Several insertion holes are evenly opened on the side wall of the cylindrical tube near the water baffle. Drainage grooves are opened on the inner wall of the insertion holes. The diameter of the insertion holes is the same as the diameter of the insertion rod. A spring is set between the cylindrical tube and the bottom inner wall of the deep hole.

[0016] Furthermore, the end of the pressure regulating rod away from the large piston is slidably disposed inside the cylindrical tube, and the spherical seat is slidably disposed inside the threaded section.

[0017] The present invention has the following beneficial effects:

[0018] (1) By setting up the upper and lower ultrafiltration components, when the ultrafiltration membrane becomes severely clogged and the water output begins to change, the large piston will be pressed to slide inside the insertion tube, thereby controlling the movement of the cylindrical tube. When the cylindrical tube moves into the deep hole, it will rotate until the ball seat disengages from the thread one. Then the spring rebounds and pushes the cylindrical tube to move. Since the cylindrical tube cannot rotate, the ultrafiltration tube will rotate through the threaded connection between the thread one and the threaded hole, thereby causing the two ultrafiltration membranes to exchange positions and alternately perform the water filtration process, avoiding the situation where the filter membrane becomes clogged and the water output rate decreases due to prolonged use.

[0019] (2) When the two ultrafiltration membranes are swapped, the water in the top cavity is subjected to gravity and air pressure and flows into the space between the two ultrafiltration membranes. During this process, the filtered water will clean the top ultrafiltration membrane that is blocked, and impurities will be stored between the two ultrafiltration membranes. Whenever the bottom ultrafiltration membrane is blocked, the ultrafiltration cartridge will reverse again to perform the cleaning process, thus extending the single use time of the ultrafiltration membrane.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the water inlet cylinder of the present invention;

[0024] Figure 3 This is a schematic diagram of the ultrafiltration cartridge installation structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the ultrafiltration cartridge structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the installation of the pressure regulating rod and the cylindrical tube of the present invention;

[0027] Figure 6This is a schematic diagram of the pressure regulating rod and cylindrical structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the ring mounting structure of the present invention;

[0029] Figure 8 For the present invention Figure 7 A magnified view of part A in the diagram.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] In the diagram: 1. Inlet cylinder; 11. Inlet pipe; 111. Valve 1; 12. Air inlet pipe; 121. Valve 2; 13. Outlet pipe; 131. Valve 3; 14. Drain pipe; 2. Baffle plate; 21. Insert pipe; 211. Slot 1; 22. Sleeve; 23. Inlet groove; 3. Mounting plate; 31. Connecting column; 311. Slot 2; 312. Deep hole; 32. Square column; 321. Small piston; 4. Ultrafiltration cartridge; 41. Mounting base 1; 42. Mounting base 2 ; 421, threaded hole; 43, pressure valve; 44, baffle; 45, cavity; 5, ultrafiltration membrane; 6, pressure regulating rod; 61, large piston; 62, round plate; 621, insertion rod; 63, round hole; 631, square hole; 64, annular groove; 641, slot; 65, ring; 651, spherical seat; 652, groove; 66, spring; 7, cylindrical tube; 701, thread one; 702, thread two; 71, insertion hole; 711, drainage groove; 72, spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] Please see Figures 1-8 As shown, the present invention is an ultrafiltration device for a demineralized water system, including an inlet cylinder 1. An inlet pipe 11, an air inlet pipe 12, and an outlet pipe 13 are fixedly connected to one end face of the inlet cylinder 1. A baffle plate 2 is fixedly connected to one end of the inlet cylinder 1 near the inlet pipe 11. A mounting plate 3 is fixedly connected to one end of the pressure inlet pipe 11 inside the inlet cylinder 1. The device also includes:

[0035] The ultrafiltration assembly includes an ultrafiltration cartridge 4, a pressure regulating rod 6, and a cylindrical cylinder 7. The ultrafiltration cartridge 4 is disposed between the baffle plate 2 and the mounting plate 3, and the pressure regulating rod 6 is disposed at the central axis of the ultrafiltration cartridge 4.

[0036] Two ultrafiltration membranes 5 are symmetrically arranged inside the ultrafiltration cartridge 4.

[0037] The water inlet pipe 11 is located at the central axis of the water inlet cylinder 1, the air inlet pipe 12 is located at the top of the water inlet pipe 11, the water outlet pipe 13 is located at the bottom of the water inlet pipe 11, a valve 111 is fixedly installed on the water inlet pipe 11, a valve 121 is fixedly installed on the air inlet pipe 12, a valve 131 is fixedly installed on the water outlet pipe 13, and a drain pipe 14 is fixedly connected to the bottom of the side wall of the water inlet cylinder 1.

[0038] A tube 21 is fixedly connected to the central axis of the side of the baffle plate 2 near the mounting plate 3. A sleeve 22 is fixedly installed at the end of the tube 21 away from the baffle plate 2. Several water inlet grooves 23 are evenly opened on the side wall of the end of the tube 21 near the baffle plate 2. A slot 211 is opened in the middle of the inner wall of the side of the baffle plate 2 near the tube 21. A connecting post 31 is fixedly connected between the side wall of the mounting plate 3 away from the baffle plate 2 and the inner wall of the water inlet cylinder 1. A slot 311 is opened in the middle of the side of the mounting plate 3 away from the connecting post 31. A deep hole 312 is opened on the bottom inner wall of the slot 311. A square post 32 is fixedly connected to the center of the bottom inner wall of the deep hole 312. A small piston 321 is fixedly connected to the end of the square post 32 away from the inside of the deep hole 312.

[0039] A mounting base 41 is fixedly connected to the middle of one end face of the ultrafiltration cartridge 4 near the baffle plate 2. The mounting base 41 is rotatably installed inside the slot 211. The insertion tube 21 is slidably installed inside the mounting base 41. The inlet tank 23 is located inside the ultrafiltration cartridge 4. A mounting base 42 is fixedly connected to the middle of one end of the ultrafiltration cartridge 4 near the mounting plate 3. A threaded hole 421 is opened inside the mounting base 42. The mounting base 42 is rotatably installed inside the slot 311. Two pressure valves 43 are symmetrically fixedly installed on the side wall of the ultrafiltration cartridge 4.

[0040] Two baffles 44 are symmetrically fixedly connected to the middle of the inner wall of the ultrafiltration cartridge 4. The ultrafiltration membrane 5 is fixedly installed between the side walls on the same side of the two baffles 44. The two ultrafiltration membranes 5 and the two baffles 44 work together to isolate the ultrafiltration cartridge 4 into two cavities 45, upper and lower.

[0041] The pressure adjusting rod 6 is slidably disposed inside the sleeve 22. A large piston 61 is fixedly installed at one end of the pressure adjusting rod 6. The large piston 61 is slidably disposed inside the insertion tube 21. A circular plate 62 is fixedly connected to the middle of the pressure adjusting rod 6. Several insertion rods 621 are fixedly connected to the end of the circular plate 62 away from the large piston 61. A circular hole 63 is opened inside the pressure adjusting rod 6. A square hole 631 is opened at the end of the pressure adjusting rod 6 away from the circular hole 63.

[0042] The square column 32 is slidably disposed inside the square hole 631, and the connecting column 31 is slidably disposed inside the round hole 63. The end of the pressure adjusting rod 6 away from the large piston 61 is provided with an annular groove 64. Several slots 641 are provided on the bottom inner wall of the annular groove 64. A ring 65 is rotatably installed inside the annular groove 64. Several spherical seats 651 are fixedly connected to the outer side wall of the ring 65. A groove 652 is provided on the inner wall of the ring 65. A spring piece 66 is fixedly installed inside the groove 652.

[0043] The cylindrical tube 7 is installed inside the threaded hole 421. A thread 701 is provided on the outer side wall of the cylindrical tube 7, and a thread 702 is provided on the inner wall of the cylindrical tube 7. The threads of the thread 701 and the thread 702 are opposite in direction. The cylindrical tube 7 is threaded into the threaded hole 421 through the thread 701. Several insertion holes 71 are evenly provided on the side wall of the cylindrical tube 7 near the water baffle 2. A drainage groove 711 is provided on the inner wall of the insertion hole 71. The diameter of the insertion hole 71 is the same as the diameter of the insertion rod 621. A spring 72 is provided between the cylindrical tube 7 and the bottom inner wall of the deep hole 312.

[0044] The end of the pressure regulating rod 6 away from the large piston 61 is slidably disposed inside the cylindrical tube 7, and the spherical seat 651 is slidably disposed inside the thread 702.

[0045] In use, first open valve 2 121 to inject a certain amount of air into the water inlet cylinder 1 through the air inlet pipe 12. Then close valve 2 121 and open valve 1 111 to inject raw water into the water inlet cylinder 1 through the water inlet pipe 11. The water flow impacts the baffle plate 2 to prevent the water flow from directly impacting the ultrafiltration membrane 5. Then the water flow will flow into the insertion tube 21 and flow into the space between the two ultrafiltration membranes 5 through the water inlet trough 23. The water inside the ultrafiltration membrane 5 is subjected to gravity and water flow pressure and passes radially through the ultrafiltration membrane 5. It first flows into the bottom cavity 45. When the bottom cavity 45 is filled, the water will flow into the upper cavity 45. The air accumulates in the upper cavity 45 and is in a compressed state until the bottom pressure valve 43 reaches a certain pressure. The bottom pressure valve 43 opens and the filtered water flows into the space between the baffle plate 2 and the mounting plate 3. Finally, it is discharged through the pressure valve 43.

[0046] As filtration time increases, the ultrafiltration membrane 5 at the bottom becomes increasingly clogged, increasing the pressure on the large piston 61. This pushes the pressure regulating rod 6 towards the side closer to the cylindrical cylinder 7. The spring 66, engaged in the slot 641, controls the unidirectional rotation of the ring 65. When the pressure regulating rod 6 approaches the cylindrical cylinder 7, the ring 65 rotates, and the spherical seat 651 slides inside the second thread 702, pushing the cylindrical cylinder 7 to rotate. As the cylindrical cylinder 7 rotates, it moves from the threaded hole 421 into the deep hole 312, compressing the spring 72 until the spherical seat 651 disengages from the first thread 701. At this point, the insertion rod 621 is inserted into the insertion hole 71. The spring 72 then rebounds, pushing the cylindrical cylinder 7 to move. Since the cylindrical cylinder 7 cannot rotate, the ultrafiltration cartridge 4 rotates through the threaded connection between the first thread 701 and the threaded hole 421.

[0047] At this time, the positions of the upper and lower ultrafiltration membranes 5 are swapped, with the clogged ultrafiltration membrane 5 at the top. At the same time, the compressed air is transferred inside the two cavities 45. Since the cavity 45 with less water storage was originally located at the top, it moves to the bottom, and the cavity 45 filled with water moves to the top.

[0048] At this time, the water flowing in through the insertion tube 21 will flow through the unblocked ultrafiltration membrane 5 at the bottom to the cavity 45 at the bottom. The water in the cavity 45 at the top will flow between the two ultrafiltration membranes 5 under the action of gravity and air pressure. During this process, the filtered water will clean the blockage of the ultrafiltration membrane 5 at the top. Impurities will be stored between the two ultrafiltration membranes 5. Whenever the ultrafiltration membrane 5 at the bottom is blocked, the ultrafiltration cartridge 4 will reverse again to perform the cleaning process, which extends the single use time of the ultrafiltration membrane 5.

[0049] When the water concentration between the two ultrafiltration membranes 5 increases to a certain level, valve 3131 is opened, and the filtered water is injected into the water inlet cylinder 1 through the drain pipe 14. The water flows back and when a certain pressure is reached, both pressure valves 43 will open to clean the two ultrafiltration membranes 5 and remove impurities between the two ultrafiltration membranes 5.

[0050] When filtering water again, repeat the above steps to perform the aeration and water injection process.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ultrafiltration device for desalination water system, comprising a water inlet cylinder, one side end face of the water inlet cylinder is fixedly connected with a water inlet pipe, an air inlet pipe and a water outlet pipe, an inner end of the water inlet cylinder close to the water inlet pipe is fixedly connected with a water baffle, and an inner end of the water inlet cylinder away from the water inlet pipe is fixedly connected with a mounting plate, characterized in that, Also include: The ultrafiltration assembly includes an ultrafiltration cartridge, a pressure regulating rod and a cylindrical barrel, the ultrafiltration cartridge is arranged between the water baffle and the mounting plate, the pressure regulating rod is arranged at the central axis of the ultrafiltration cartridge; The inside of the ultrafiltration cartridge is symmetrically provided with two ultrafiltration membranes; The side wall of the insertion tube close to the insertion tube is uniformly provided with a plurality of water inlet grooves, and the inner wall of the water baffle close to the insertion tube is provided with a clamping groove one in the middle part; The inner wall of the ultrafiltration cartridge is symmetrically fixedly connected with two baffles, the ultrafiltration membrane is fixedly installed between the side walls of the same side of the two baffles, and the two ultrafiltration membranes and the two baffles cooperate to isolate the ultrafiltration cartridge into two cavities above and below; The pressure regulating rod is slidably arranged in the sleeve, one end of the pressure regulating rod is fixedly installed with a large piston, the large piston is slidably arranged in the insertion tube, the middle part of the pressure regulating rod is fixedly connected with a circular plate, one end of the circular plate away from the large piston is fixedly connected with a plurality of insertion rods, and the inside of the pressure regulating rod is provided with a circular hole; The side wall of the insertion tube close to the insertion tube is uniformly provided with a plurality of water inlet grooves, and the inner wall of the water baffle close to the insertion tube is provided with a clamping groove one in the middle part; The cylindrical barrel is arranged in the threaded hole, the outer side wall of the cylindrical barrel is provided with a thread one, the inner wall of the cylindrical barrel is provided with a thread two, the thread directions of the thread one and the thread two are opposite, the cylindrical barrel is threadedly installed in the threaded hole through the thread one, the side wall of the cylindrical barrel close to the water baffle is uniformly provided with a plurality of insertion holes, the inner wall of the insertion hole is provided with a drainage groove, the caliber of the insertion hole is same with the caliber of the insertion rod, and the spring is arranged between the cylindrical barrel and the bottom inner wall of the deep hole; The pressure regulating rod is slidably arranged in the cylindrical barrel, and the spherical seat is slidably arranged in the thread two.

2. The ultrafiltration device for a desalination system according to claim 1, characterized in that: The water inlet pipe is arranged at the central axis of the water inlet cylinder, the air inlet pipe is located at the top of the water inlet pipe, the water outlet pipe is located at the bottom of the water inlet pipe, the valve one is fixedly installed on the water inlet pipe, the valve two is fixedly installed on the air inlet pipe, the valve three is fixedly installed on the water outlet pipe, and the drainage pipe is fixedly connected with the side wall of the water inlet cylinder.

3. The ultrafiltration device for a desalination system according to claim 1, characterized in that: The side end face middle part of the ultrafiltration cartridge close to the water baffle is fixedly connected with a mounting seat one, the mounting seat one is rotationally installed in the clamping groove one, the insertion pipe is slidably arranged in the mounting seat one, the water inlet groove is located in the ultrafiltration cartridge, the middle part of one end of the ultrafiltration cartridge close to the mounting plate is fixedly connected with a mounting seat two, the inside of the mounting seat two is provided with a threaded hole, the mounting seat two is rotationally installed in the clamping groove two, and two pressure valves are symmetrically and fixedly installed on the side wall of the ultrafiltration cartridge.

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