High-pressure-resistant and anti-pollution reverse osmosis membrane assembly

Abstract

The invention relates to the field of water treatment, and discloses a high-pressure-resistant and anti-pollution reverse osmosis membrane component, which comprises a main body frame, the main body frame is used as a bearing foundation of equipment, and at least three support frames are fixedly welded at the upper end of the main body frame along the transverse direction at equal intervals; the outer shell assembly is installed on the inner side of each supporting frame in a matched mode. According to the invention, the multi-stage sealing is matched with rigid support, and the high-pressure resistance is obviously improved; a multi-stage positioning sealing structure is formed by the communicating cover, the connecting rods which are uniformly distributed in the circumferential direction, the sealing plug and at least two groups of annular clamping grooves, and is matched with the embedding sealing of the sealing ring at the end part of the central water collecting pipe and the clamping grooves; the problems of leakage of high-pressure raw water and streaming of the raw water and purified water are completely eradicated, the middle of the film roll is bonded and shaped through the center separation sleeves, the number of the center separation sleeves is not less than two, the center separation sleeves and the outer shell are clamped and fixed through the clamping grooves, and continuous high-pressure water flow impact can be resisted.

Description

Technical Field

[0001] This invention relates to the field of water treatment, and more particularly to a high-pressure resistant and fouling-resistant reverse osmosis membrane module. Background Technology

[0002] Water treatment is the process of purifying polluted water bodies through physical, chemical, and biological technologies to achieve water quality standards for discharge or resource utilization. Its core work includes optimizing water treatment processes (such as using activated sludge methods, membrane treatment technologies, etc.). Reverse osmosis separation technology is currently the most widely used high-precision purification technology in the water treatment industry. It is widely used in drinking water purification, industrial pure water preparation, brackish water desalination, and wastewater treatment and reuse. As the core component of this technology, the pressure resistance, antifouling ability, and influent and permeate flow efficiency of the reverse osmosis membrane module directly determine the purification effect, energy consumption level, and service life of the overall system.

[0003] In existing technologies, reverse osmosis membrane modules suffer from insufficient pressure resistance and sealing performance. Traditional membrane module housings and end caps often use simple threaded or snap-fit ​​connections, lacking multi-stage sealing and positioning structures. Long-term high-pressure water flow impacts can easily lead to loose connections, end-face leakage, and cross-contamination between raw and purified water. Furthermore, the membrane winding structure lacks a central restraint structure, making it prone to membrane roll displacement, loosening, and partial collapse under high pressure, resulting in flow channel blockage and failing to meet the requirements of continuous high-pressure operation. In addition, the influent and permeate flow efficiency is low. Conventional membrane modules often have flat, straight influent and permeate screens, which easily create laminar and stagnant zones when water flows along the membrane surface, leading to water flow disturbance. Poor performance is characterized by high raw water inlet resistance, slow rate of purified water flow into the collection pipe, low overall inlet and outlet water volume, and limited system treatment efficiency; poor anti-fouling performance, prone to sludge accumulation and blockage, irregular limiting structure at the edges of membranes and separators, resulting in numerous structural dead corners, where impurities, colloids, and microorganisms easily adhere and accumulate, leading to continuous membrane fouling. This can cause a significant drop in membrane flux in a short period, making cleaning and recovery difficult and drastically shortening the membrane module replacement cycle; at the same time, the water supply pressure of reverse osmosis membrane modules is mostly constant and cannot be dynamically adjusted according to the actual operating conditions of the membrane modules, which can easily lead to overpressure operation and accelerate membrane element aging and failure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-pressure resistant and fouling-resistant reverse osmosis membrane module to solve the problems of easy leakage and deformation under high pressure, low efficiency of feed water and product water flow, easy fouling and sedimentation on the membrane surface, easy damage to accessories in the water collection structure, and mismatch of pressure regulation in existing reverse osmosis membrane modules.

[0005] To address the aforementioned problems, the present invention is implemented through the following technical solution.

[0006] A high-pressure resistant and fouling-resistant reverse osmosis membrane module includes: a main frame, which serves as the load-bearing foundation of the equipment, and at its upper end, at least three support frames are welded and fixed at equal intervals along the transverse direction; The outer shell assembly is adapted to be installed on the inner side of each support frame, and the support frame provides rigid support and positioning constraint to the outer shell assembly, ensuring the structural stability of the outer shell assembly under high pressure conditions. The raw water guide pipe is fluidly connected to the water inlet end of the outer casing assembly, and its end away from the outer casing assembly is connected to the water outlet end of the high-pressure pump. The high-pressure pump serves as the pressure source of the system and is used to precisely regulate the raw water supply pressure. A control box is configured on one side of the upper end of the main frame. The control box is electrically connected to the high-pressure pump to realize automated control of the high-pressure pump's operating status. The water inlet end of the high-pressure pump is connected to a raw water inlet pipe for introducing the raw water medium to be treated. The reverse osmosis membrane mechanism is the core functional component of the system. The reverse osmosis membrane mechanism includes reverse osmosis membrane sheets. Through the selective permeation of the reverse osmosis membrane sheets, the reverse osmosis membrane mechanism achieves efficient retention of impurities in the raw water and separation of purified water.

[0007] In one embodiment, the housing assembly includes a housing body, which is a hollow cylindrical structure with one end open.

[0008] In one embodiment, the raw water inlet end of the outer shell is fitted with a connecting cover. The connecting cover is circumferentially provided with connecting rods, one end of which is fixedly connected to the inner side of the connecting cover. The other end of the connecting rod is connected to a sealing plug. The inner wall of the sealing plug is provided with locking grooves in an annular longitudinal pattern at equal intervals, and there are at least two sets of locking grooves.

[0009] In one embodiment, the outer shell is integrally formed with a purified water outlet and a concentrated water outlet. The raw water inlet of the connecting cover is provided with a raw water inlet pipe, which is connected to the inside of the outer shell and corresponds to the water inlet side of the reverse osmosis membrane mechanism. The purified water outlet and the concentrated water outlet are opened on the closed end sidewall of the outer shell, respectively corresponding to the purified water outlet and the concentrated water outlet of the reverse osmosis membrane mechanism, so as to realize the separate flow and transportation of raw water, purified water and concentrated water.

[0010] In one embodiment, the purified water outlet of the outer casing assembly is sealed and connected to a purified water outlet pipe, with the other end extending to the purified water collection end outside the equipment. The purified water outlet pipe is made of corrosion-resistant stainless steel, and its pipe diameter is adapted to the purified water outlet to ensure stable purified water output. The concentrated water outlet of the outer casing assembly is sealed and connected to a concentrated water outlet pipe, with the other end extending to the concentrated water discharge end outside the equipment.

[0011] In one embodiment, the reverse osmosis membrane mechanism includes a central water collection pipe. A sealing ring is fitted on the outer side of the end of the central water collection pipe near the connecting cover, and the sealing ring is bonded and fixed to the central water collection pipe. The sealing ring is used to insert into the locking groove of the sealing plug to form an end seal at the raw water inlet, preventing cross-flow between raw water and purified water and ensuring the filtration effect.

[0012] In one embodiment, the sidewall of the central water collection pipe is provided with a plurality of evenly distributed water collection holes. An inlet screen and two reverse osmosis membranes are rolled up sequentially on the outside of the central water collection pipe. A product water screen is provided between every two reverse osmosis membranes. The product water screen is directly connected to the water collection holes. The diameter of the water collection holes is 0.5-1mm, and the hole walls are rounded to avoid scratching the product water screen and to ensure that the filtered water quickly flows into the central water collection pipe.

[0013] In one embodiment, a shaping strip is provided on one side of both the inlet water separator and the product water separator. The shaping strip is made of elastic and wear-resistant polymer material, is wavy, and is distributed laterally at equal intervals on one side of the inlet water separator and the product water separator. The shaping strip is used to orient the inlet water separator and the product water separator into a micro-wavy shape. The thickness of the shaping strip is the same as that of the reverse osmosis membrane, which maintains the structural stability of the reverse osmosis membrane after winding and reduces the adhesion and accumulation of pollutants on the edge of the reverse osmosis membrane. A product water separator is provided between every two reverse osmosis membranes. The reverse osmosis membrane and the inlet water separator are attached and wound up to the outside of the central water collection pipe, and there are no less than two sets of reverse osmosis membranes, product water separators, and inlet water separators.

[0014] In one embodiment, a central partition sleeve is bonded to the outermost part of the reverse osmosis membrane. There are at least two sets of central partition sleeves, and multiple sets of central partition sleeves are correspondingly engaged in the locking groove. The central partition sleeves provide central positioning and shaping for the winding structure of the reverse osmosis membrane, preventing the reverse osmosis membrane from shifting, loosening, or deforming under high-pressure filtration conditions.

[0015] In one embodiment, the control box has a built-in pressure sensor and a frequency converter. The pressure sensor is connected to the outlet pipe of the high-pressure pump, and the frequency converter is electrically connected to the high-pressure pump. It can dynamically adjust the pump speed according to the real-time water pressure to accurately match the high-pressure operating requirements of the reverse osmosis membrane mechanism.

[0016] This invention provides a high-pressure resistant and fouling-resistant reverse osmosis membrane module. Compared with the prior art, it has the following advantages: 1. Multi-stage sealing combined with rigid support significantly improves high-pressure resistance. This invention forms a multi-stage positioning and sealing structure through a connecting cover, circumferentially evenly distributed connecting rods, sealing plugs, and no less than two sets of annular locking grooves. Combined with the sealing ring at the end of the central water collection pipe and the locking groove, it eliminates the problems of high-pressure raw water leakage and cross-flow between raw water and purified water. The main frame and multiple sets of equidistant support frames form a rigid clamping support for the outer shell. At the same time, the central partition sleeve bonds and shapes the middle of the membrane roll. There are no less than two sets of central partition sleeves, which are fixed to the outer shell through locking grooves. This can resist the impact of continuous high-pressure water flow, avoid membrane roll displacement, loosening, and collapse, and ensure that the component has a long-term structural integrity and reliable sealing under high-pressure conditions. 2. The wavy shaping strip structure significantly improves the efficiency of water inlet and water production. Both the water inlet and water production screens are equipped with horizontally equidistant wavy shaping strips. The wavy outline can increase the cross-sectional area of ​​water flow, break the laminar flow state of the traditional flat structure, enhance the turbulence of water flow along the membrane surface, reduce the raw water inlet resistance, and increase the raw water inlet rate. At the same time, it optimizes the shape of the water production channel, accelerates the convergence speed of purified water to the central water collection pipe, and simultaneously improves the overall water inlet efficiency and water production efficiency of the components, increases the processing capacity per unit time, and reduces the system's operating energy consumption. 3. The structure is free of dead corners and the flow channel is regular, resulting in long-term stable anti-fouling performance. The thickness of the corrugated shaping strip is consistent with that of the reverse osmosis membrane. The horizontally equidistant distribution can eliminate the structural dead corners between the membrane and the edge of the separator, reducing the space for impurities and colloids to accumulate and adhere. The regular corrugated flow channel can reduce the water flow stagnation zone, delay the adsorption and deposition of pollutants on the membrane surface, reduce the membrane fouling rate, extend the chemical cleaning cycle of the membrane module and the overall service life. Combined with the high-pressure sealing structure, it avoids the aggravation of local pollution caused by crossflow and leakage, and achieves long-term anti-fouling operation. 4. The control box has a built-in pressure sensor and frequency converter to form a closed-loop control system. It collects the high-pressure pump outlet pressure in real time and dynamically adjusts the pump speed and output pressure to keep the system water supply pressure within the rated safe pressure range of the reverse osmosis membrane mechanism. This avoids fatigue damage to the membrane and sealing structure caused by overpressure operation, and also avoids insufficient water production efficiency caused by low-pressure operation, thus balancing the requirements of high pressure resistance, safety and high-efficiency water production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a high-pressure resistant and fouling-resistant reverse osmosis membrane module.

[0018] Figure 2 This is a schematic diagram of the reverse osmosis membrane mechanism after the connecting cover is separated from the outer shell of the high-pressure and fouling-resistant reverse osmosis membrane module.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the high-pressure resistant and fouling-resistant reverse osmosis membrane module after separation from the reverse osmosis membrane mechanism.

[0020] Figure 4 This is a frontal partial sectional view of the high-pressure resistant and fouling-resistant reverse osmosis membrane module housing and reverse osmosis membrane mechanism.

[0021] Figure 5 Reverse osmosis membrane modules resistant to high pressure and fouling Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 Reverse osmosis membrane modules resistant to high pressure and fouling Figure 4 Enlarged structural diagram at point B.

[0023] Figure 7 This is a schematic diagram of a partially cut and unfolded three-dimensional structure of a high-pressure, fouling-resistant reverse osmosis membrane module.

[0024] Figure 8 This is a schematic diagram of the side view of a partially cut and unfolded reverse osmosis membrane module designed to withstand high pressure and resist fouling.

[0025] Figure 9 This is a schematic diagram of the inlet water separator structure for a high-pressure resistant and fouling-resistant reverse osmosis membrane module.

[0026] The attached figures are labeled as follows: 1. Main frame; 2. Support frame; 3. Outer shell assembly; 301. Outer shell; 302. Connecting cover; 303. Raw water inlet pipe; 304. Clean water outlet; 305. Concentrate outlet; 306. Connecting rod; 307. Sealing plug; 308. Engaging groove; 4. Raw water guide pipe; 5. High-pressure pump; 6. Raw water inlet pipe; 7. Reverse osmosis membrane mechanism; 701. Central water collection pipe; 702. Sealing ring; 703. Reverse osmosis membrane sheet; 704. Inlet water separator; 705. Product water separator; 706. Shaping strip; 707. Central partition sleeve; 708. Water collection hole; 8. Concentrate outlet pipe; 9. Clean water outlet pipe; 10. Control box; 11. Pressure sensor; 12. Frequency converter. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0028] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] Reference Figures 1-9A high-pressure resistant and fouling-resistant reverse osmosis membrane module includes: a main frame 1, which serves as the load-bearing foundation of the equipment, with at least three support frames 2 welded and fixed at equal intervals along its upper end; an outer shell assembly 3, which is adapted to be installed inside each support frame 2, and the support frames 2 provide rigid support and positioning constraints for the outer shell assembly 3, ensuring the structural stability of the outer shell assembly 3 under high-pressure conditions; and a raw water guide pipe 4, which is fluidly connected to the inlet end of the outer shell assembly 3, and its end away from the outer shell assembly 3 is connected to the outlet end of a high-pressure pump 5. 5 serves as the system's pressure source, used for precise control of the raw water supply pressure. A control box 10 is configured on one side of the upper end of the main frame 1. The control box 10 is electrically connected to the high-pressure pump 5 to achieve automated control of the high-pressure pump 5's operating status. The inlet end of the high-pressure pump 5 is connected to the raw water inlet pipe 6, used to introduce the raw water medium to be treated. The reverse osmosis membrane mechanism 7 is the core functional component of the system. The reverse osmosis membrane mechanism 7 includes a reverse osmosis membrane 703. Through the selective permeation of the reverse osmosis membrane 703, the reverse osmosis membrane mechanism 7 achieves efficient retention of impurities in the raw water and separation and production of purified water.

[0030] The outer shell assembly 3 includes an outer shell 301, which is a hollow columnar structure with one end open.

[0031] The raw water inlet end of the outer casing 301 is fitted with a connecting cover 302. The connecting cover 302 is evenly distributed with connecting rods 306 around its circumference. One end of the connecting rod 306 is fixedly connected to the inner side of the connecting cover 302. The other end of the connecting rod 306 is connected to a sealing plug 307. The inner wall of the sealing plug 307 is provided with locking grooves 308 in an annular longitudinal direction at equal intervals. There are at least two sets of locking grooves 308.

[0032] The outer casing 301 is integrally formed with a purified water outlet 304 and a concentrated water outlet 305. The raw water inlet end of the connecting cover 302 is provided with a raw water inlet pipe 303, which is connected to the inside of the outer casing 301 and corresponds to the water inlet side of the reverse osmosis membrane mechanism 7. The purified water outlet 304 and the concentrated water outlet 305 are opened on the closed end side wall of the outer casing 301, respectively corresponding to the purified water outlet and the concentrated water outlet of the reverse osmosis membrane mechanism 7, so as to realize the separate flow and transportation of raw water, purified water and concentrated water.

[0033] The water outlet 304 of the outer casing assembly 3 is sealed and connected to the water outlet pipe 9, and the other end extends to the water collection end outside the equipment. The water outlet pipe 9 is made of corrosion-resistant stainless steel and its pipe diameter is adapted to the water outlet 304 to ensure stable output of purified water. The concentrated water outlet 305 of the outer casing assembly 3 is sealed and connected to the concentrated water outlet pipe 8, and the other end extends to the concentrated water discharge end outside the equipment.

[0034] The reverse osmosis membrane mechanism 7 includes a central water collection pipe 701. A sealing ring 702 is fitted on the outer side of the end of the central water collection pipe 701 near the connecting cover 302, and the sealing ring 702 is bonded and fixed to the central water collection pipe 701. The sealing ring 702 is used to insert into the locking groove 308 of the sealing plug 307 to form an end seal at the raw water inlet end, preventing cross-flow between raw water and purified water and ensuring the filtration effect.

[0035] The central water collection pipe 701 has several evenly distributed water collection holes 708 on its side wall. An inlet water separator 704 and two reverse osmosis membrane sheets 703 are rolled up sequentially on the outside of the central water collection pipe 701. A product water separator 705 is provided between every two reverse osmosis membrane sheets 703. The product water separator 705 is directly connected to the water collection holes 708. The diameter of the water collection holes 708 is 0.5-1mm, and the hole walls are rounded to avoid scratching the product water separator 705, while ensuring that the filtered purified water quickly flows into the central water collection pipe 701.

[0036] Both the inlet water separator 704 and the product water separator 705 have shaping strips 706 on one side. The shaping strips 706 are made of elastic and wear-resistant polymer material and are wavy. The shaping strips 706 are distributed horizontally at equal intervals on one side of the inlet water separator 704 and the product water separator 705. The shaping strips 706 are used to orient the inlet water separator 704 and the product water separator 705 into a micro-wavy shape. The thickness of the shaping strips 706 is the same as that of the reverse osmosis membrane 703, which maintains the structural stability of the reverse osmosis membrane 703 after winding and reduces the adhesion and accumulation of pollutants on the edge of the reverse osmosis membrane 703. A product water separator 705 is provided between every two reverse osmosis membranes 703. The reverse osmosis membrane 703 and the inlet water separator 704 are attached and rolled up on the outside of the central water collection pipe 701. There are no less than two sets of reverse osmosis membranes 703, product water separators 705 and inlet water separators 704.

[0037] Under pressure, the raw water enters the inlet mesh 704 flow channel. The corrugated shaping strips 706 increase the cross-sectional area of ​​the flow channel and enhance the water flow disturbance, reduce the inlet resistance, and increase the flow rate of the raw water along the membrane surface.

[0038] A central partition sleeve 707 is bonded to the outermost part of the reverse osmosis membrane 703. There are at least two sets of central partition sleeves 707, and multiple sets of central partition sleeves 707 are correspondingly inserted into the locking groove 308. The central partition sleeve 707 positions and shapes the winding structure of the reverse osmosis membrane 703 in the middle, so as to prevent the reverse osmosis membrane 703 from shifting, loosening or deforming under high pressure filtration conditions.

[0039] The central separator sleeve 707 constrains the middle of the reverse osmosis membrane roll 703 to prevent the membrane roll from deforming or loosening due to the impact of high-pressure water flow, thus maintaining unobstructed flow channels.

[0040] The control box 10 has a built-in pressure sensor 11 and a frequency converter 12. The pressure sensor 11 is connected to the outlet pipe of the high-pressure pump 5, and the frequency converter 12 is electrically connected to the high-pressure pump 5. It can dynamically adjust the pump speed according to the real-time water pressure to accurately match the high-pressure working conditions required by the reverse osmosis membrane mechanism 7.

[0041] During system operation, pressure sensor 11 collects the pressure signal at the outlet of high-pressure pump 5 in real time and transmits it to frequency converter 12. Frequency converter 12 compares the preset safe pressure range and dynamically adjusts the speed and output pressure of high-pressure pump 5 to ensure that the system pressure matches the high-pressure resistance of reverse osmosis membrane mechanism 7 and avoids overpressure damage.

[0042] During operation, the raw water to be treated enters the high-pressure pump 5 through the raw water inlet pipe 6. After being pressurized by the high-pressure pump 5, it is transported through the raw water guide pipe 4 to the raw water inlet pipe 303 of the connecting cover 302, enters the internal chamber of the outer casing 301, and flows towards the reverse osmosis membrane mechanism 7. Under pressure, the raw water enters the inlet screen 704 flow channel. The corrugated shaping strip 706 increases the cross-sectional area of ​​the flow channel and enhances the water flow disturbance, reduces the inlet resistance, and increases the flow rate of the raw water along the membrane surface. Under the selective permeation effect of the reverse osmosis membrane 703, water molecules pass through the reverse osmosis membrane 703. As the permeate water enters the flow channel of the permeate water separator 705, impurities such as salt, colloids, suspended solids, and microorganisms are trapped on the raw water side, forming concentrated water. The purified water passing through the reverse osmosis membrane 703 rapidly converges in the flow channel of the corrugated permeate water separator 705, and flows into the pipe through the rounded corner collection holes 708 on the side wall of the central collection pipe 701. The rounded corner holes prevent scratching the permeate water separator 705 and reduce flow resistance. The purified water flows along the central collection pipe 701 to the closed end of the outer casing 301, and then enters the purified water outlet pipe 9 through the purified water outlet 304, and is transported to the external purified water collection end. The trapped concentrated water flows along the reverse osmosis membrane... The water flows from the membrane sheet 703 to the closed end of the outer casing 301, and then flows into the concentrate outlet pipe 8 through the concentrate outlet 305, discharging to the external concentrate treatment unit, thus completing the separation of raw water, purified water, and concentrate. During system operation, the pressure sensor 11 collects the pressure signal at the outlet of the high-pressure pump 5 in real time and transmits it to the frequency converter 12. The frequency converter 12 compares the preset safe pressure range and dynamically adjusts the speed and output pressure of the high-pressure pump 5 to ensure that the system pressure matches the high-pressure resistance of the reverse osmosis membrane mechanism 7, avoiding overpressure damage. The sealing ring 702 and the sealing plug... The locking groove 308 of 307 fits into the water inlet to form a multi-stage seal, preventing raw water from directly entering the purified water side; the corrugated shaping strip 706 maintains the regularity of the structure of the reverse osmosis membrane 703, the water inlet screen 704, and the product water screen 705, eliminates dead corners of siltation, improves water inlet and product water efficiency, and inhibits the adhesion of pollutants; the central partition sleeve 707 constrains the middle of the reverse osmosis membrane roll 703 to prevent the membrane roll from deforming or loosening due to the impact of high-pressure water flow, keeps the flow channel unobstructed, and ultimately achieves the synergistic effect of the module's high-pressure operation, high water inlet and product water efficiency, and long-term anti-fouling.

[0043] Therefore, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the foregoing disclosure, and it should be understood that in some cases, certain features of the invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the following claims and / or the specific embodiments disclosed as the best mode for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the invention will be defined only by the appended claims.

Claims

1. A high-pressure resistant and fouling-resistant reverse osmosis membrane module, characterized in that, include: The main frame (1) serves as the load-bearing foundation of the equipment, and at its upper end, no fewer than three support frames (2) are welded and fixed at equal intervals along the transverse direction. The outer shell assembly (3) is adapted to be installed on the inner side of each support frame (2), and the support frame (2) forms rigid support and positioning constraint on the outer shell assembly (3) to ensure the structural stability of the outer shell assembly (3) under high pressure conditions; The raw water guide pipe (4) is fluidly connected to the water inlet end of the outer shell assembly (3), and its end away from the outer shell assembly (3) is connected to the water outlet end of the high pressure pump (5). The high pressure pump (5) serves as the pressure source of the system and is used to precisely regulate the raw water supply pressure. A control box (10) is configured on one side of the upper end of the main frame (1). The control box (10) is electrically connected to the high pressure pump (5) to realize the automatic control of the operating status of the high pressure pump (5). The water inlet end of the high pressure pump (5) is connected to the raw water inlet pipe (6) for introducing the raw water medium to be treated. The reverse osmosis membrane mechanism (7) is the core functional component of the system. The reverse osmosis membrane mechanism (7) includes a reverse osmosis membrane sheet (703). The reverse osmosis membrane mechanism (7) achieves efficient retention of impurities in the raw water and separation and production of purified water through the selective permeation of the reverse osmosis membrane sheet (703).

2. The high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 1, characterized in that, The outer shell assembly (3) includes an outer shell (301), which is a hollow columnar structure with one end open.

3. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 2, characterized in that, The raw water inlet end of the outer shell (301) is fitted with a connecting cover (302). The connecting cover (302) is evenly distributed with connecting rods (306) in the circumference. One end of the connecting rod (306) is fixedly connected to the inner side of the connecting cover (302). The other end of the connecting rod (306) is connected to a sealing plug (307). The inner wall of the sealing plug (307) is provided with locking grooves (308) in a ring longitudinal direction at equal intervals. There are not less than two sets of locking grooves (308).

4. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 3, characterized in that, The outer shell (301) is integrally formed with a purified water outlet (304) and a concentrated water outlet (305). The raw water inlet end of the connecting cover (302) is provided with a raw water inlet pipe (303), and the raw water inlet pipe (303) is connected to the inside of the outer shell (301) and corresponds to the water inlet side of the reverse osmosis membrane mechanism (7). The purified water outlet (304) and the concentrated water outlet (305) are opened on the closed end side wall of the outer shell (301), respectively corresponding to the purified water outlet and the concentrated water outlet of the reverse osmosis membrane mechanism (7), so as to realize the separate flow and transportation of raw water, purified water and concentrated water.

5. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 4, characterized in that, The water outlet (304) of the outer casing assembly (3) is sealed and connected to a water outlet pipe (9), and the other end extends to the water collection end outside the equipment. The water outlet pipe (9) is made of corrosion-resistant stainless steel and its pipe diameter is adapted to the water outlet (304) to ensure stable water output. The concentrated water outlet (305) of the outer casing assembly (3) is sealed and connected to a concentrated water outlet pipe (8), and the other end extends to the concentrated water discharge end outside the equipment.

6. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 1, characterized in that, The reverse osmosis membrane mechanism (7) includes a central water collection pipe (701). A sealing ring (702) is fitted on the outer side of the end of the central water collection pipe (701) near the connecting cover (302). The sealing ring (702) is bonded and fixed to the central water collection pipe (701). The sealing ring (702) is used to be inserted into the locking groove (308) of the sealing plug (307) to form an end seal at the raw water inlet end, preventing cross-flow between raw water and purified water and ensuring the filtration effect.

7. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 6, characterized in that, The central water collection pipe (701) has several evenly distributed water collection holes (708) on its side wall. The central water collection pipe (701) has an inlet water separator (704) and two reverse osmosis membranes (703) rolled up in sequence on its outer side. A product water separator (705) is provided between every two reverse osmosis membranes (703). The product water separator (705) is directly connected to the water collection hole (708). The diameter of the water collection hole (708) is 0.5-1mm, and the hole wall is rounded to avoid scratching the product water separator (705) and to ensure that the filtered water quickly flows into the central water collection pipe (701).

8. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 7, characterized in that, The inlet water separator (704) and the product water separator (705) are each provided with a shaping strip (706). The shaping strip (706) is made of elastic wear-resistant polymer material, is wavy, and is distributed laterally at equal intervals on one side of the inlet water separator (704) and the product water separator (705). The shaping strip (706) is used to orient the inlet water separator (704) and the product water separator (705) into a micro-wavy shape. The thickness of the shaping strip (706) is the same as that of the reverse osmosis membrane (703). The reverse osmosis membrane (703) is consistent with the inlet water membrane (704) after winding, and the adhesion and accumulation of pollutants on the edge of the reverse osmosis membrane (703) are reduced. A product water separator (705) is provided between every two reverse osmosis membranes (703). The reverse osmosis membrane (703) and the inlet water separator (704) are attached and rolled up on the outside of the central water collection pipe (701). There are no less than two sets of reverse osmosis membranes (703), product water separators (705) and inlet water separators (704).

9. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 8, characterized in that, A central partition sleeve (707) is bonded to the outermost part of the reverse osmosis membrane (703). There are at least two sets of central partition sleeves (707), and multiple sets of central partition sleeves (707) are correspondingly inserted into the locking groove (308). The central partition sleeve (707) positions and shapes the winding structure of the reverse osmosis membrane (703) in the middle, so as to prevent the reverse osmosis membrane (703) from shifting, loosening or deforming under high pressure filtration conditions.

10. A high-pressure resistant and fouling-resistant reverse osmosis membrane module according to claim 1, characterized in that, The control box (10) is equipped with a pressure sensor (11) and a frequency converter (12). The pressure sensor (11) is connected to the outlet pipe of the high-pressure pump (5), and the frequency converter (12) is electrically connected to the high-pressure pump (5). The pump speed can be dynamically adjusted according to the real-time water pressure to accurately match the high-pressure working conditions of the reverse osmosis membrane mechanism (7).

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