A reverse osmosis membrane element with a spiral structure

Abstract

The utility model relates to the technical field related to reverse osmosis membrane elements, and in particular to a reverse osmosis membrane element with a spiral structure, comprising a shell, a first end cap is arranged at one end of the shell, a water inlet is arranged at one end of the first end cap, a second end cap is arranged at one end of the shell, a pure water outlet is arranged at one end of the second end cap, and a wastewater outlet is arranged at one end of the second end cap. The reverse osmosis membrane element with a spiral structure is provided with a shell, a water inlet, a pure water outlet, a wastewater outlet, a first sealing ring, a central tube, a water collection hole, a second sealing ring, a water production grid, a diaphragm and a water inlet grid. The first sealing ring and the second sealing ring enhance the sealing performance of the reverse osmosis membrane element. Raw water enters the shell from the water inlet pipe. Under the action of the water production grid, the diaphragm and the water inlet grid, pure water in the raw water is extracted and enters the central tube through the water collection hole, and finally drains from the pure water outlet, and the remaining waste water is discharged from the wastewater outlet.

Description

Technical Field

[0001] The utility model relates to the technical field related to reverse osmosis membrane elements, in particular to a reverse osmosis membrane element with a spiral structure. Background Art

[0002] Reverse osmosis membrane element is an artificial semipermeable membrane made by simulating biological semipermeable membrane, which is the core component of reverse osmosis technology. This kind of membrane element usually adopts a spiral roll structure, also called a roll structure, which is composed of multi-leaf membrane bags. The water production grid, membrane and water inlet grid inside the reverse osmosis membrane element are wound on the central tube in a spiral roll structure. Such a spiral roll structure has the advantages of uniform water flow distribution, high pollution resistance, low replacement cost, simple external pipeline, easy cleaning and maintenance, and large design freedom. At the same time, the reverse osmosis membrane element also has the advantages of simple processing, low cost, ability to function at a lower operating pressure, ability to withstand the influence of chemical or biochemical effects, and less affected by factors such as pH value and temperature. Therefore, the application field of reverse osmosis membrane elements is very wide now. Therefore, a reverse osmosis membrane element with a spiral structure is particularly needed.

[0003] However, most of the existing reverse osmosis membrane elements with a spiral structure do not use a spiral winding structure when winding the membrane sheets and grids of the reverse osmosis membrane elements, so the working efficiency of the reverse osmosis membrane elements is relatively low, and the reverse osmosis membrane elements are also more prone to clogging. Secondly, the sealing effect of most reverse osmosis membrane elements is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a reverse osmosis membrane element with a spiral structure to solve the problem that the existing reverse osmosis membrane elements with a spiral structure proposed in the above background technology do not use a spiral winding structure when winding the membrane sheets and grids of most reverse osmosis membrane elements, so that the working efficiency of the reverse osmosis membrane elements is relatively low, and the reverse osmosis membrane elements are also more prone to clogging. Secondly, the sealing effect of most reverse osmosis membrane elements is poor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reverse osmosis membrane element with a spiral structure, comprising a shell, a first end cover is provided at one end of the shell, a water inlet is provided at one end of the first end cover, a second end cover is provided at one end of the shell, a pure water outlet is provided at one end of the second end cover, a waste water outlet is provided at one end of the second end cover, a baffle is provided at one end of the first end cover, a bolt is provided at one end of the baffle, a first sealing groove is opened on one side surface of the first end cover, and a first sealing ring is bonded to one end of the first sealing groove.

[0006] Preferably, one end of the first end cover is connected to a central tube, a water collection hole is provided on one side surface of the central tube, both ends of the central tube are connected to a cover plate, a second sealing groove is provided on one side surface of the cover plate, a second sealing ring is bonded to one end of the second sealing groove, and a fiberglass shell is provided at one end of the cover plate.

[0007] Preferably, a water production grid is wound around one end of the central tube, the interior of the water production grid is coated with a membrane, and the interior of the membrane is coated with a water inlet grid.

[0008] Preferably, a first sealing groove is formed on one side surface of the first end cover and the second end cover, and a first sealing ring is bonded in each of the two first sealing grooves.

[0009] Preferably, the baffle is fixedly connected to the first end cover by bolts, and one end of the first end cover and the second end cover are both fixedly connected with the baffle.

[0010] Preferably, the water collecting holes are opened at equal intervals on one side surface of the central tube.

[0011] Preferably, the water production grid is wound around one end of the central tube in a spiral winding manner, and the membrane is composed of a non-woven fabric, a support layer and a desalination layer.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the reverse osmosis membrane element with a spiral structure, through the arrangement of the outer shell, the first end cover, the water inlet, the second end cover, the pure water outlet, the wastewater outlet, the baffle, the bolts, the first sealing groove, the first sealing ring, the central tube, the water collecting hole, the cover plate, the second sealing groove, the second sealing ring, the fiberglass shell, the water production grid, the diaphragm and the water inlet grid, the first sealing ring and the second sealing ring greatly enhance the overall sealing of the reverse osmosis membrane element, the raw water enters the outer shell from the water inlet pipe, and under the action of the water production grid, the diaphragm and the water inlet grid, the pure water in the raw water is extracted and enters the central tube through the water collecting hole, and finally drains from the pure water outlet, and the remaining waste water is discharged from the wastewater outlet, thus completing the purification of the raw water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first end cover and the first sealing groove cooperating with each other in the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second end cover and the baffle plate cooperating with each other in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the central tube and the water collection hole cooperating with each other in the utility model;

[0017] Figure 5 This is a schematic diagram of the structure in which the water production grid and the diaphragm cooperate with each other in the utility model.

[0018] In the figure: 1. outer shell; 2. first end cover; 3. water inlet; 4. second end cover; 5. pure water outlet; 6. waste water outlet; 7. baffle; 8. bolt; 9. first sealing groove; 10. first sealing ring; 11. center tube; 12. water collecting hole; 13. cover plate; 14. second sealing groove; 15. second sealing ring; 16. fiberglass shell; 17. water production grid; 18. diaphragm; 19. water inlet grid. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5The utility model provides a technical solution: a reverse osmosis membrane element with a spiral structure, comprising a shell 1, a first end cover 2 is arranged at one end of the shell 1, a water inlet 3 is arranged at one end of the first end cover 2, a second end cover 4 is arranged at one end of the shell 1, a pure water outlet 5 is arranged at one end of the second end cover 4, a waste water outlet 6 is arranged at one end of the second end cover 4, a baffle 7 is arranged at one end of the first end cover 2, a bolt 8 is arranged at one end of the baffle 7, a first sealing groove 9 is opened on one side surface of the first end cover 2, a first sealing ring 10 is bonded to one end of the first sealing groove 9, through the shell 1, the first end cover 2, water inlet 3, second end cover 4, pure water outlet 5, waste water outlet 6, baffle 7, bolt 8, first sealing groove 9, first sealing ring 10, central tube 11, water collecting hole 12, cover plate 13, second sealing groove 14, second sealing ring 15, glass fiber reinforced plastic shell 16, water production grid 17, diaphragm 18 and water inlet grid 19 are arranged. When installing, first remove the first end cover 2 and the second end cover 4, put the cover plate 13 and the glass fiber reinforced plastic shell 16 into the shell 1, and the water production grid 17, diaphragm 18 and water inlet grid 19 inside the glass fiber reinforced plastic shell 16 also enter the shell 1 together, wherein the first sealing groove The first sealing ring 10 in 9 has a good sealing effect, and then the first end cover 2 and the second end cover 4 are installed, and the first end cover 2 and the second end cover 4 are respectively placed in the two ends of the shell 1. The second sealing ring 15 in the second sealing groove 14 has a good sealing effect, and the friction force of the second sealing ring 15 has a certain fixed limiting effect. Then the baffle 7 is installed on one end of the first end cover 2 and the second end cover 4 through the bolt 8. The baffle 7 has a fixed effect, and the baffle can prevent the raw water inside the shell 1 from leaking without pure water, and can also prevent external dust and bacteria from entering the shell 1 It has a good protective effect on the pollution of pure water. When purifying water, the clean water pipe, the outlet pipe and the sewage pipe are connected to the water inlet 3, the pure water outlet 5 and the waste water outlet 6 respectively, and the raw water is injected into the shell 1 through the water inlet 3. The raw water flows to the membrane surface of the diaphragm 18 through the water production grid 17. After being processed by the diaphragm 18, the purified pure water flows toward the center along the spiral direction through the water inlet grid 19, and the pure water flows into the central pipe 11 through the water collecting hole 12. Finally, the pure water is discharged through the pure water outlet 5, and the waste water remaining after purification is discharged through the waste water outlet 6, thus completing the purification of the raw water.

[0021] Furthermore, one end of the first end cover 2 is connected to the central tube 11, one side surface of the central tube 11 is provided with a water collecting hole 12, both ends of the central tube 11 are connected to the cover plate 13, one side surface of the cover plate 13 is provided with a second sealing groove 14, one end of the second sealing groove 14 is bonded with a second sealing ring 15, and one end of the cover plate 13 is provided with a fiberglass shell 16. Through the setting of the second sealing groove 14 and the second sealing ring 15, the second sealing ring 15 has a good sealing effect, and at the same time has a certain resistance, and has a certain fixing and limiting effect.

[0022] Furthermore, a water production grid 17 is wound around one end of the central tube 11, the interior of the water production grid 17 is covered with a diaphragm 18, and the interior of the diaphragm 18 is covered with a water inlet grid 19. Through the setting of the central tube 11, the pure water extracted from the raw water will finally flow into the central tube 11 and then be discharged through the pure water outlet 5.

[0023] Furthermore, a first sealing groove 9 is opened on one side surface of the first end cover 2 and the second end cover 4, and a first sealing ring 10 is bonded in the two first sealing grooves 9. Through the arrangement of the first sealing groove 9 and the first sealing ring 10, the first end cover 2 and the second end cover 4 at both ends are provided with the first sealing ring 10, which greatly improves the sealing performance of the first end cover 2 and the second end cover 4.

[0024] Furthermore, the baffle 7 is fixedly connected to the first end cover 2 by bolts 8, and one end of the first end cover 2 and the second end cover 4 are fixedly connected with the baffle 7. Through the setting of the baffle 7, the baffle 7 can effectively prevent leakage and prevent the raw water from leaking out without being purified. At the same time, it can also prevent external dust or bacteria from entering the outer shell 1, thereby achieving a good protective effect.

[0025] Furthermore, water collecting holes 12 are opened at equal intervals on one side surface of the central tube 11 . Through the setting of the water collecting holes 12 , pure water extracted from the raw water can enter the central tube 11 through the water collecting holes 12 and then be discharged through the pure water outlet 5 .

[0026] Furthermore, the water production grid 17 is spirally wound around one end of the central tube 11, and the membrane 18 is composed of a non-woven fabric, a support layer and a desalination layer. Through the setting of the membrane 18, the membrane 18 can retain solutes, ions and microorganisms in the water on one side of the membrane 18, and only allow water molecules to pass through, thereby achieving a good water purification and filtration effect.

[0027] Working principle: During installation, first remove the first end cover 2 and the second end cover 4, put the cover plate 13 and the FRP shell 16 into the outer shell 1, and the water production grid 17, the diaphragm 18 and the water inlet grid 19 inside the FRP shell 16 also enter the outer shell 1 together, wherein the first sealing ring 10 in the first sealing groove 9 has a good sealing effect, and then install the first end cover 2 and the second end cover 4, and put the first end cover 2 and the second end cover 4 into the two ends of the outer shell 1 respectively, and the second sealing ring 15 in the second sealing groove 14 has a good sealing effect, and the friction force of the second sealing ring 15 has a certain fixed limiting effect, and then the baffle 7 is installed on one end of the first end cover 2 and the second end cover 4 through the bolt 8, and the baffle 7 has a fixed effect, and the baffle It can prevent the raw water inside the shell 1 from leaking without pure water, and it can also prevent external dust and bacteria from entering the shell 1 to pollute the pure water, which has a good protective effect. When purifying water, the clean water pipe, the outlet pipe and the sewage pipe are respectively connected to the water inlet 3, the pure water outlet 5 and the waste water outlet 6, and the raw water is injected into the shell 1 through the water inlet 3. The raw water flows to the membrane surface of the diaphragm 18 through the water production grid 17. After being processed by the diaphragm 18, the purified pure water flows toward the center along the spiral direction through the water inlet grid 19, and the pure water flows into the central pipe 11 through the water collection hole 12. Finally, the pure water is discharged through the pure water outlet 5, and the waste water remaining after purification is discharged through the waste water outlet 6, thus completing the purification of the raw water.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reverse osmosis membrane element with a spiral structure, comprising a housing (1), characterized in that: A first end cover (2) is provided at one end of the housing (1), a water inlet (3) is provided at one end of the first end cover (2), a second end cover (4) is provided at one end of the housing (1), a pure water outlet (5) is provided at one end of the second end cover (4), a waste water outlet (6) is provided at one end of the second end cover (4), a baffle (7) is provided at one end of the first end cover (2), a bolt (8) is provided at one end of the baffle (7), a first sealing groove (9) is provided on one side surface of the first end cover (2), and a first sealing ring (10) is bonded to one end of the first sealing groove (9).

2. The reverse osmosis membrane element with a spiral structure according to claim 1, characterized in that: One end of the first end cover (2) is connected to a central tube (11), one side surface of the central tube (11) is provided with a water collecting hole (12), both ends of the central tube (11) are connected to a cover plate (13), one side surface of the cover plate (13) is provided with a second sealing groove (14), one end of the second sealing groove (14) is bonded with a second sealing ring (15), and one end of the cover plate (13) is provided with a glass fiber reinforced plastic shell (16).

3. The reverse osmosis membrane element with a spiral structure according to claim 2, characterized in that: A water production grid (17) is wound around one end of the central tube (11), the interior of the water production grid (17) is coated with a membrane (18), and the interior of the membrane (18) is coated with a water inlet grid (19).

4. The reverse osmosis membrane element with a spiral structure according to claim 1, characterized in that: A first sealing groove (9) is provided on one side surface of the first end cover (2) and the second end cover (4), and a first sealing ring (10) is bonded inside the two first sealing grooves (9).

5. The reverse osmosis membrane element with a spiral structure according to claim 1, characterized in that: The baffle (7) is fixedly connected to the first end cover (2) via bolts (8); one end of each of the first end cover (2) and the second end cover (4) is fixedly connected to the baffle (7).

6. The reverse osmosis membrane element with a spiral structure according to claim 2, characterized in that: The water collection holes (12) are arranged at equal intervals on a surface of one side of the central tube (11).

7. The reverse osmosis membrane element with a spiral structure according to claim 3, characterized in that: The water production grid (17) is wound around one end of the central tube (11) in a spiral winding manner, and the membrane (18) is composed of a non-woven fabric, a support layer and a desalination layer.

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