Water treatment spiral-wound membrane module with self-scale-inhibition capability

Abstract

The utility model discloses a water treatment spiral-wound membrane module with self-scale inhibition capability. The water treatment spiral-wound membrane module comprises a spiral-wound membrane unit, an outer protective shell made of a conductive material or a strong magnetic material, an end cover and a central pipe, end covers are mounted at two ends of the outer protective shell; a plurality of radial through holes are uniformly distributed on the circumference of the central tube; the central tube is coaxially positioned in the inner cavity of the outer protective shell; two ends of the central tube are fixedly connected with end covers; two ends of the spiral-wound membrane unit directly face second through holes of the end covers, the outer wall is attached to the outer protective shell, and the inner wall covers the outer wall of the central pipe; when the end cover is made of a conductive material, a plurality of electric contacts are symmetrically mounted on two sides of the end cover, the electric contacts on two sides are electrically connected with an alternating current power supply or a direct current power supply, raw water is continuously concentrated along the radial direction of the spiral-wound membrane unit, and a strong electromagnetic field can activate water molecules and prevent ions from forming crystals, so that scales cannot be attached to the spiral-wound membrane unit. The utility model has the effects of no scaling for a long time, high energy consumption, high operation efficiency and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment device field, especially in a kind of water treatment roll type membrane module with self scale inhibition capability. BACKGROUND

[0002] With the global population continues to increase, social freshwater demand increases sharply, freshwater shortage problem is increasingly serious, people begin to deal with various unsuitable water resources such as brackish water, seawater to form drinkable freshwater, in the desalination process, roll type membrane module is widely used in seawater desalination, brackish water desalination, domestic water purification, wastewater reuse and special separation, etc., can effectively remove dissolved salt, colloid, organic matter, bacteria, microorganism and other impurities in water, roll type membrane structure has the characteristics of large filtration area, filtration efficiency and filtration stability, its defects are: roll type membrane is susceptible to scale pollution during use, scale can cause membrane hole blockage, reduce membrane flux, increase energy consumption, reduce the operating efficiency of system, and significantly affect the service life of membrane. SUMMARY

[0003] In order to solve one or more of the above problems, the utility model provides a kind of water treatment roll type membrane module with self scale inhibition capability.

[0004] According to one aspect of the utility model, the water treatment roll type membrane module with self scale inhibition capability includes: outer protective shell, end cap, center tube, roll type membrane unit and electric contact point;

[0005] Outer protective shell, end cap and center tube are all made of conductive material that can conduct alternating current and direct current, outer protective shell is installed with end cap at both ends and both are sealed to form hollow filter cavity;

[0006] Two end caps are provided with first through hole in the center and multiple second through holes around the center;

[0007] There are several radial through holes on the circumference of the center tube, one end hole of the center tube is closed and the other end hole is open, the coaxial line of the center tube is located in the inner cavity of the outer protective shell and both ends are fixedly connected with the end cap;

[0008] The roll type membrane unit is installed in the filter cavity, the roll type membrane unit is opposite to the second through hole at both ends, the outer wall is attached to the outer protective shell and the inner wall is wrapped around the outer wall of the center tube, and one side of the membrane body of the roll type membrane unit is a concentrated water net and the other side is a water production net;

[0009] Several electric contact points are symmetrically installed on both sides of the end cap, and the electric contact points on both sides are electrically connected with alternating current source or direct current source, when producing water, connecting power supply can generate strong electric field in outer protective shell and two end caps, various ions and pollutants continuously accumulate on the concentrated water side, strong electric field can activate water molecules, prevent ions from forming crystals and adhering scale on the roll type membrane unit.

[0010] In some embodiments, the electrically conductive material of the outer protective shell, the end cap and the center tube is a plastic base material uniformly mixed with conductive fibers by injection molding;

[0011] The plastic base material is any one or combination of ABS, PC, ABS, PA and PPE;

[0012] The conductive fiber is a nickel-plated carbon fiber or a stainless steel fiber.

[0013] In some embodiments, the electric field strength and alternating frequency of the power supply can be adjusted;

[0014] Or the electrical contact is a convex-concave contact structure, which can enable multiple roll type membrane modules to be installed in series;

[0015] Or the center tube, the outer protective shell and the end cap are provided with an insulation coating and a grounding protection assembly to prevent electric leakage.

[0016] According to another aspect of the utility model, the water treatment roll type membrane module with self scale inhibition capability comprises a roll type membrane unit and an outer protective shell, an end cap and a center tube made of a strong magnetic material;

[0017] The outer protective shell is provided with the end cap at both ends and is sealed to form a hollow filter cavity;

[0018] The two end caps are provided with a first through hole in the center and a plurality of second through holes around the center;

[0019] The center tube is provided with a plurality of radial through holes distributed uniformly in the circumference, one end hole of the center tube is closed and the other end hole is open, the center tube is coaxial with the inner cavity of the outer protective shell and is fixedly connected with the end cap at both ends;

[0020] The roll type membrane unit is installed in the filter cavity, the roll type membrane unit is opposite to the second through hole at both ends, the outer wall is attached to the outer protective shell and the inner wall is wrapped around the outer wall of the center tube, one side of the membrane body of the roll type membrane unit is a concentrated water net and the other side is a water production net;

[0021] The outer protective shell, the end cap and the center tube form a strong magnetic field; when producing water, various ions and pollutants continuously accumulate on the concentrated water side, the strong magnetic field activates water molecules, prevents ions from forming crystals and prevents scale from adhering to the roll type membrane unit.

[0022] In some embodiments, the strong magnetic material of the outer protective shell, the end cap and the center tube is any one of a neodymium iron boron magnet, a samarium cobalt magnet and an aluminum nickel cobalt magnet.

[0023] In some embodiments, the membrane body is a reverse osmosis membrane or a nanofiltration membrane.

[0024] In some embodiments, the end cap is provided with an external thread, and the external thread is fixedly connected with an external pipeline.

[0025] In some embodiments, two circular ring type adapter pipes and several fixers are further included;

[0026] The adapter pipe circumferential array has several radial mounting holes, the outside of the mounting hole is a large diameter limiting groove, and the inside is provided with a large diameter containing groove;

[0027] The fixer includes a large diameter insertion column and a small diameter support screw, the support screw is fixedly connected with a limiting end plate on the outside, the limiting end plate is slidingly connected with the limiting groove, the support screw passes through the limiting groove and enters the containing groove, the insertion column is located in the containing groove and the center threaded hole of the insertion column is threadedly connected with the support screw, and a reset spring is further arranged between the insertion column and the containing groove;

[0028] The outer wall of the end cover is provided with several circumferential array connecting grooves, the adapter pipe slides into the end cover and extrudes and lifts the insertion column, the insertion column compresses the reset spring and enters the containing groove, when the insertion column moves to the connecting groove, the reset spring elastically returns to make the insertion column enter the connecting groove, so that the two are connected into one.

[0029] In some embodiments, the limiting groove is threadedly connected with a closed blind plug at the outer end;

[0030] A plurality of sealing rings are arranged between the sealing groove of the end cover and the adapter pipe.

[0031] In some embodiments, the end cover is further provided with several axial sliding positioning grooves, the sliding positioning groove is provided with a connecting groove at the end, and the insertion column is slidingly connected with the sliding positioning groove until entering the connecting groove;

[0032] The radial sliding plate at the upper end of the insertion column is slidingly connected with the containing groove in the same size.

[0033] The water treatment roll type membrane module with self anti-fouling capability has a strong electric field structure or a strong magnetic field structure, when raw water is continuously concentrated, various ions and pollutants are continuously accumulated on the concentrated water side, the strong electric field or the strong magnetic field activates water molecules, improves the activity of water molecules, affects the formation of crystal nucleus of fouling material, suppresses the growth of the crystal nucleus, and prevents ions from forming crystals and adhering to the membrane body to cause fouling, the beneficial effects are: firstly, in the use process of the roll type membrane, the electromagnetic field makes the thermal motion of water molecules stronger, the crystal nucleus cannot grow into a tight crystal structure, but only can form a loose structure, which is easy to be washed away by water flow, so that the purpose of preventing the element from being fouled is achieved, the membrane hole is long and unblocked, the best membrane flux is maintained, the energy consumption is effectively reduced, the high efficient operation efficiency of the system is maintained, and the service life of the membrane is significantly improved; secondly, the structure is simple, easy to assemble and maintain, and the overall cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a three-dimensional schematic view of the water treatment roll type membrane module with strong electric field self anti-fouling capability in the embodiment one of the utility model;

[0035] Figure 2 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model.

[0036] Figure 3 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model. Figure 1 And Figure 2 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model.

[0037] Figure 4 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model. Figure 1 And Figure 2 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model.

[0038] Figure 5 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model. Figure 3 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model.

[0039] Figure 6 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model. Figure 3 It is the three-dimensional schematic view of the water treatment roll type membrane module with strong magnetic field self anti-fouling ability of the second embodiment of the utility model.

[0040] Outer protective shell 1, hollow filter cavity 10;

[0041] End cover 2, first through hole 21, second through hole 22, connecting groove 23, sealing groove 24, sliding positioning groove 25;

[0042] Center tube 3, radial through hole 31;

[0043] Roll type membrane unit 4, membrane body 40, concentrated water net 41, water production net 42;

[0044] Electric contact 5;

[0045] Adapter pipe 6, mounting hole 60, limiting groove 61, containing groove 62;

[0046] Fixer 7, plug-in column body 71, support screw 72, limiting end plate 73, radial sliding plate 74, reset spring 75;

[0047] Closed blind plug 8, sealing ring 9. DETAILED DESCRIPTION

[0048] The utility model will be further explained in detail in combination with the drawings. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0049] Figure 1 to 6 The water treatment roll type membrane module with self anti-fouling ability according to the utility model is schematically shown.

[0050] Figure 1 and Figure 3 The water treatment roll type membrane module with self anti-fouling ability of the strong electric field structure of the embodiment one comprises: an outer protective shell 1, an end cover 2, a center tube 3, a roll type membrane unit 4 and an electric contact 5;

[0051] The outer protective shell 1, the end cover 2 and the center tube 3 are all made of conductive material which can conduct AC and DC electricity. Preferably, the conductive material of the outer protective shell 1, the end cover 2 and the center tube 3 is that conductive fibers are uniformly mixed and injection molded in plastic substrate; the plastic substrate is any one or combination of ABS, PC, ABS, PA and PPE; the conductive fiber is nickel-plated carbon fiber or stainless steel fiber; the material can achieve more intense electromagnetic effect, realize efficient activation of water molecules and reduce the effect of crystal nucleus growth. The loose structure is easy to be washed away by water flow, thereby preventing the element from fouling and pollution.

[0052] The outer protective shell 1 is installed with the end cover 2 at both ends and the two are sealed to form a hollow filter cavity 10;

[0053] The two end covers 2 are provided with a first through hole 21 in the center and a plurality of second through holes 22 around the center;

[0054] The center tube 3 is provided with a plurality of radial through holes 31 distributed in the circumference, one end hole of the center tube 3 is closed and the other end hole is open, the center tube 3 is coaxially located in the inner cavity of the outer protective shell 1 and is fixedly connected with the end covers 2 at both ends;

[0055] The roll type membrane unit 4 is installed in the filter cavity 10, the roll type membrane unit 4 is opposite to the second through holes 22 at both ends, the outer wall is attached to the outer protective shell 1 and the inner wall is wrapped around the outer wall of the center tube 3, one side of the membrane body 40 of the roll type membrane unit 4 is a concentrated water net 41 and the other side is a water production net 42;

[0056] A plurality of electric contacts 5 are symmetrically installed on both sides of the end cover 2, the electric contacts 5 on both sides are electrically connected with an AC power supply or a DC power supply, and the electric field strength and the alternating frequency of the power supply are preferably set to be adjustable. The electric contact 5 is preferably a convex-concave type contact structure, which can enable multiple roll type membrane modules to be installed in series. Its beneficial effect is that the setting can improve the running speed and the running flux, and ensure large flow water treatment.

[0057] When producing water, the power supply is turned on to enable the outer protective shell 1 and the two end covers 2 to generate a strong electric field acting on the filter cavity 10, the raw water is continuously concentrated along the radial direction of the roll type membrane unit 4, various ions and pollutants are continuously accumulated on the concentrated water side, the strong electric field can activate water molecules and prevent ions from forming crystals to adhere to the roll type membrane unit 4 and cause fouling.

[0058] The water treatment roll type membrane module with self anti-fouling capability has a strong electric field structure, when raw water is continuously concentrated, various ions and pollutants are continuously accumulated on the concentrated water side, the strong electric field activates water molecules, improves water molecule activity, affects the formation of scale substance crystal nucleus, prevents the growth of the crystal nucleus and prevents the attachment of ions to form crystals and scale on the membrane body 40, and has the beneficial effects that: firstly, during the use of the roll type membrane, the electric field makes the thermal motion of water molecules stronger, the crystal nucleus cannot normally grow into a tight crystal structure, but only can form a loose structure, which is easy to be washed away by water flow, thereby achieving the purpose of preventing the element from being fouled

[0059] Moreover, the membrane holes are always unblocked, the optimal membrane flux is maintained, the energy consumption is effectively reduced, the high efficient operation efficiency of the system is maintained, and the service life of the membrane is significantly improved; secondly, the structure is simple, easy to assemble and maintain, and the overall cost is low.

[0060] Preferably, the center pipe 3, the outer protective shell 1 and the end cover 2 are provided with an insulation coating and a grounding protection assembly to prevent electric leakage. The beneficial effect is that the setting can achieve good safety protection and ensure safe operation.

[0061] Preferably, the outer protective shell 1 is made of glass steel, and metal wires are wound on the inner surface of the outer protective shell 1, and the two ends of the metal wires are connected with the end cover 2.

[0062] Figure 2 and Figure 3 The water treatment roll type membrane module with strong magnetic field self anti-fouling capability is illustrated, which comprises: a roll type membrane unit 4, and an outer protective shell 1, an end cover 2 and a center pipe 3 made of strong magnetic material; wherein the strong magnetic material of the outer protective shell 1, the end cover 2 and the center pipe 3 is any one of neodymium iron boron magnet, samarium cobalt magnet and aluminum nickel cobalt magnet. The beneficial effect is that the setting can form a strong magnetic field, which continuously affects the activated water molecules to make the thermal motion of the water molecules stronger; at the same time, the magnetic field also affects the ions of the scale substance in the water, which is more prone to nucleation, but due to the influence of the magnetic field, the formed crystal nucleus cannot normally grow into a tight crystal structure, but only can form a loose structure, which is easy to be washed away by water flow, thereby achieving the purpose of preventing the element from being fouled.

[0063] The outer protective shell 1 is provided with the end cover 2 at both ends and is sealed to form a hollow filter cavity 10;

[0064] The two end covers 2 are provided with a first through hole 21 in the center and a plurality of second through holes 22 around the center;

[0065] The center pipe 3 is provided with a plurality of radial through holes 31 uniformly distributed on the circumference, one end hole of the center pipe 3 is closed and the other end hole is open, the center pipe 3 is coaxially located in the inner cavity of the outer protective shell 1 and is fixedly connected with the end cover 2 at both ends;

[0066] The spiral membrane unit 4 is installed in the filter cavity 10 through the shaft sleeve, the two ends of the spiral membrane unit 4 are opposite to the second through hole 22, the outer wall of the spiral membrane unit 4 is attached to the outer protective shell 1, and the inner wall of the spiral membrane unit 4 is sleeved with the outer wall of the central pipe 3, one side of the membrane body 40 of the spiral membrane unit 4 is the concentrated water net 41, and the other side is the water production net 42;

[0067] The strong magnetic field formed by the outer protective shell 1, the end cover 2 and the central pipe 3 can act on the filter cavity 10; when water production is performed, raw water is continuously concentrated along the radial direction of the spiral membrane unit 4, various ions and pollutants are continuously accumulated on the concentrated water side, the strong magnetic field can activate water molecules, prevent ions from forming crystals and from being attached to the spiral membrane unit 4 to cause scaling.

[0068] The water treatment spiral membrane module with self-scaling resistance has a strong magnetic field structure, when raw water is continuously concentrated, various ions and pollutants are continuously accumulated on the concentrated water side, the strong magnetic field can activate water molecules, improve the activity of water molecules, affect the formation of crystal nuclei of scaling substances, prevent the growth of the crystal nuclei and the formation of crystals of ions and the attachment of the crystals to the membrane body 40 to cause scaling, and has the following beneficial effects: first, in the use process of the spiral membrane, the magnetic field makes the thermal motion of water molecules stronger, the crystal nuclei cannot grow into a tight crystal structure and can only form a loose structure, which is easy to be washed away by water flow, so that the scaling and pollution of the element are prevented

[0069] , the membrane holes are always unblocked, the best membrane flux is maintained, the energy consumption is effectively reduced, the high-efficiency operation efficiency of the system is maintained, and the service life of the membrane is significantly improved; second, the structure is simple, easy to assemble and maintain, and the overall cost is low.

[0070] In the third embodiment, the water treatment spiral membrane module with self-scaling resistance has a strong electromagnetic field structure, which adopts the combination of the first and second embodiments and has better self-scaling effect.

[0071] Further, in the above three embodiments, the membrane body 40 is a reverse osmosis membrane or a nanofiltration membrane. The spiral membrane unit 4 includes a plurality of coaxially arranged annular membrane bodies 40, each membrane body 40 has different water nets on both sides, and each membrane body 40 has a concentrated water net 3 on one side and a water production net 4 on the other side. Its beneficial effect is that this setting can be applied to various application scenarios.

[0072] Further, in the above three embodiments, as shown in Figure 1 to 2 , the end cover 2 is provided with external threads, and the external threads are fixedly connected with external pipelines. Its beneficial effect is that the threads are fixed, and the installation and maintenance are convenient.

[0073] Further, in the above three embodiments, two circular ring type adapter pipes 6 and a plurality of fixers 7 are further included.

[0074] The adapter pipe 6 is provided with a plurality of radial mounting holes 60, a large-diameter limiting groove 61 outside the mounting hole 60, and a large-diameter accommodating groove 62 inside the mounting hole 60;

[0075] The fixer 7 includes a large-diameter insertion column 71 and a small-diameter support screw 72, the support screw 72 is fixedly connected with a limiting end plate 73 outside, the limiting end plate 73 is slidingly connected with the limiting groove 61, the support screw 72 passes through the limiting groove 61 and enters the accommodating groove 62, the insertion column 71 is located in the accommodating groove 62 and a center threaded hole of the insertion column 71 is threadedly connected with the support screw 72, and a reset spring 75 is further arranged between the insertion column 71 and the accommodating groove 62;

[0076] The outer wall of the end cover 2 is provided with a plurality of circumferentially arranged connecting grooves 23, the adapter pipe 6 is slidingly connected with the end cover 2 and radially extrudes and lifts the insertion column 71, the insertion column 71 compresses the reset spring 75 and enters the accommodating groove 62, when the insertion column 71 moves to the connecting groove 23, the reset spring 75 elastically returns and makes the insertion column 71 enter the connecting groove 23, so that the two are connected into an integral whole. The beneficial effect is that the setting can realize quick and fast connection and fixation, and avoid the connection loosening phenomenon caused by long-term large-flow liquid impact load.

[0077] Preferably, the limiting groove 61 is threadedly connected with a closed blind plug 8 at the outer end. The beneficial effect is that the setting has simple structure and is convenient to assemble and disassemble.

[0078] A plurality of sealing rings 9 are further arranged between the sealing groove 24 of the end cover 2 and the adapter pipe 6. The beneficial effect is that the setting has high sealing performance and no leakage in long-term use.

[0079] Preferably, the end cover 2 is further provided with a plurality of axial sliding positioning grooves 25, the sliding positioning groove 25 is provided with a connecting groove 23 at the end, and the insertion column 71 is slidingly connected with the sliding positioning groove 25 until entering the connecting groove 23.

[0080] A radial sliding plate 74 is further arranged at the upper end of the insertion column 71, and the radial sliding plate 74 is slidingly connected with the accommodating groove 62 in the same profile size. The beneficial effect is that the setting has good guiding performance and is convenient to quickly assemble and disassemble.

[0081] The above only describes some embodiments of the present application. For ordinary skilled persons in the art, without departing from the creative concept of the present application, a plurality of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A water treatment spiral-wound membrane module having self-fouling resistance, characterized in that, It comprises an outer protective shell (1), end caps (2), a central tube (3), a spiral membrane unit (4) and electrical contacts (5); The outer protective shell (1), end caps (2) and central tube (3) are made of conductive material capable of conducting AC and DC electricity, and the outer protective shell (1) is provided with end caps (2) at both ends and forms a hollow filter cavity (10) by sealing; Both end caps (2) are provided with a first through hole (21) in the center and a plurality of second through holes (22) around the center; The central tube (3) is provided with a plurality of radial through holes (31) distributed uniformly on the circumference, one end hole of the central tube (3) is closed and the other end hole is open, and the central tube (3) is coaxially located in the inner cavity of the outer protective shell (1) and is fixedly connected with the end caps (2) at both ends; The spiral membrane unit (4) is installed in the filter cavity (10) in the form of a shaft sleeve, the outer wall of the spiral membrane unit (4) is fitted with the outer protective shell (1) and the inner wall is sleeved with the outer wall of the central tube (3), one side of the membrane body (40) of the spiral membrane unit (4) is a concentrated water net (41) and the other side is a water production net (42); A plurality of electrical contacts (5) are symmetrically installed on both sides of the end caps (2), and the electrical contacts (5) on both sides are electrically connected with an AC power supply or a DC power supply, when producing water, connecting the power supply can generate a strong electric field in the outer protective shell (1) and the two end caps (2), various ions and pollutants continuously accumulate on the concentrated water side, and the strong electric field can activate water molecules to prevent ions from forming crystals and adhering to the spiral membrane unit (4).

2. The water treatment spiral-wound membrane module of claim 1, wherein, The conductive material of the outer protective shell (1), end caps (2) and central tube (3) is a plastic base material uniformly mixed with conductive fibers and injection molded; The plastic base material is any one of ABS, PC, ABS, PA and PPE; The conductive fiber is a nickel-plated carbon fiber or a stainless steel fiber.

3. The water treatment spiral-wound membrane module of claim 1, wherein, The electric field strength and alternating frequency of the power supply can be adjusted; Or the electrical contacts (5) are convex-concave contact structures, which can enable multiple spiral membrane modules to be installed in series; Or the central tube (3), outer protective shell (1) and end caps (2) are provided with an insulating coating and a grounding protection component to prevent electric leakage.

4. A water treatment spiral-wound membrane module having self-fouling resistance, characterized in that, It comprises a spiral membrane unit (4) and an outer protective shell (1), end caps (2) and a central tube (3) made of strong magnetic material; The outer protective shell (1) is provided with end caps (2) at both ends and forms a hollow filter cavity (10) by sealing; Both end caps (2) are provided with a first through hole (21) in the center and a plurality of second through holes (22) around the center; The central tube (3) is provided with a plurality of radial through holes (31) distributed uniformly on the circumference, one end hole of the central tube (3) is closed and the other end hole is open, and the central tube (3) is coaxially located in the inner cavity of the outer protective shell (1) and is fixedly connected with the end caps (2) at both ends; The spiral membrane unit (4) is installed in the filter cavity (10) in the form of a shaft sleeve, the outer wall of the spiral membrane unit (4) is fitted with the outer protective shell (1) and the inner wall is sleeved with the outer wall of the central tube (3), one side of the membrane body (40) of the spiral membrane unit (4) is a concentrated water net (41) and the other side is a water production net (42); The outer protective shell (1), end cover (2), center tube (3) form a strong magnetic field; when producing water, various ions and pollutants continuously accumulate on the concentrated water side, the strong magnetic field activates water molecules, prevents ions from forming crystals and prevents scaling from adhering to the roll type membrane unit (4).

5. The water treatment spiral-wound membrane module of claim 4, wherein, The strong magnetic material of the outer protective shell (1), end cover (2), and center tube (3) is any one of a neodymium iron boron magnet, a samarium cobalt magnet, and an aluminum nickel cobalt magnet.

6. The water treatment spiral-wound membrane module according to any one of claims 1 to 5, characterized in that The membrane body (40) is a reverse osmosis membrane or a nanofiltration membrane.

7. The water treatment spiral-wound membrane module according to any one of claims 1 to 5, characterized in that An outer thread is formed on the end cover (2), and the outer thread is fixedly connected to an external pipeline.

8. The water treatment spiral-wound membrane module according to any one of claims 1 to 5, characterized in that Further comprising two circular ring type adapter pipes (6) and a plurality of fixers (7); The adapter pipe (6) is circumferentially arrayed with a plurality of radial mounting holes (60), the outer side of the mounting hole (60) is a large-diameter limiting groove (61), and the inner side is provided with a large-diameter accommodating groove (62); The fixer (7) comprises a large-diameter plug-in column (71) and a small-diameter support screw (72), the outer side of the support screw (72) is fixedly connected with a limiting end plate (73), the limiting end plate (73) is slidingly connected in the limiting groove (61), the support screw (72) passes through the limiting groove (61) and enters the accommodating groove (62), the plug-in column (71) is located in the accommodating groove (62) and the center threaded hole thereof is threadedly connected with the support screw (72), and a return spring (75) is further arranged between the plug-in column (71) and the accommodating groove (62); The outer wall of the end cover (2) is provided with a plurality of circumferentially arrayed connecting grooves (23), the adapter pipe (6) is slid into the end cover (2) and presses and lifts the plug-in column (71), the plug-in column (71) compresses the return spring (75) and enters the accommodating groove (62), when the plug-in column (71) moves to the connecting groove (23), the return spring (75) elastically returns to make the plug-in column (71) enter the connecting groove (23), so that the two are connected into an integral whole.

9. The water treatment spiral-wound membrane module of claim 8, wherein, The outer end of the limiting groove (61) is threadedly connected with a closed blind plug (8); A plurality of sealing rings (9) are arranged between the sealing groove (24) of the end cover (2) and the adapter pipe (6).

10. The water treatment spiral-wound membrane module of claim 8, wherein, The end cover (2) is further provided with a plurality of axial sliding positioning grooves (25), the sliding positioning groove (25) is provided with a connecting groove (23) at the end, and the plug-in column (71) is slidingly connected with the sliding positioning groove (25) until entering the connecting groove (23); The radial sliding plate (74) at the upper end of the plug-in column (71) is slidingly connected with the accommodating groove (62) in the same size.

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