Quick-release end plate structure for flat sheet membrane filtration equipment

Abstract

The utility model discloses a quick-release end plate structure for flat sheet membrane filtration equipment. The quick-release end plate structure is provided with an integrated thrust component, a bearing plate, an adapter and a check ring, the integrated thrust part comprises a thrust part, a reinforcing part and a connecting part, a plurality of through holes for water to flow in and out are formed in the peripheral surface of the reinforcing part, the connecting part is located at a center hole of the integrated thrust part, and the connecting part is provided with a first end part and a second end part; the bearing plate is matched and attached to the thrust part; the adapter is arranged in the reinforcing part, one end of the adapter is connected with the second end part of the connecting part, and the other end of the adapter is connected with the adjacent membrane filtration assembly; the check ring is enclosed by a plurality of baffle rings, an annular groove is formed in the check ring, an elastic locking ring is arranged in the groove, and the elastic locking ring is used for locking the position between the check ring and a membrane shell of the flat membrane filtration equipment. According to the utility model, complicated fastening operation is not needed, so that the working efficiency is improved; fluid leakage is effectively prevented, the sealing performance of the flat sheet membrane filtering equipment is ensured, and the filtering effect is improved.

Description

Technical Field

[0001] This utility model relates to a quick-release end plate structure for flat sheet membrane filtration equipment, belonging to the field of flat sheet membrane technology. Background Technology

[0002] Currently, end cap assemblies are a crucial component in flat-sheet membrane filtration equipment, as their performance directly impacts the overall operating efficiency, maintenance costs, and lifespan of the filtration system. Traditional flat-sheet membrane filtration equipment end cap assemblies suffer from the following drawbacks:

[0003] First, traditional end caps are usually composed of multiple independent components, such as separate end plates, seals, and connectors. The connection between these components is complicated, requiring precise alignment and multiple tightening operations during installation. This not only consumes a lot of time and manpower but also easily leads to problems such as poor sealing due to improper installation.

[0004] Secondly, due to their complex structure, the disassembly and reinstallation of traditional end caps is cumbersome when maintaining flat-sheet membrane filtration equipment. Each maintenance requires a significant amount of time and effort to disassemble and reassemble the end caps, increasing maintenance costs. Furthermore, the inconvenience in replacing easily damaged components such as seals and connectors in traditional end caps further exacerbates maintenance costs. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a quick-release end plate structure for flat sheet membrane filtration equipment, thus solving problems such as complex structure, difficult installation and maintenance, and poor sealing performance in traditional technologies.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a quick-release end plate structure for a flat sheet membrane filtration device, including an integrated thrust member, a pressure plate, an adapter, and a retaining ring;

[0007] The integrated thrust member includes a thrust portion, a reinforcing portion, and a connecting portion. The outer peripheral surface of the reinforcing portion is provided with several through holes for water inlet and outlet. The connecting portion is located at the central hole of the integrated thrust member and has a first end and a second end. The pressure plate is matched and fitted with the thrust portion.

[0008] The adapter is disposed inside the reinforcing part, one end of the adapter is connected to the second end of the connecting part, and the other end of the adapter is connected to the adjacent membrane filter assembly;

[0009] The retaining ring is formed by several retaining rings, and an annular groove is formed inside the retaining ring. An elastic locking ring is provided in the groove, and the elastic locking ring is used to lock the position between the retaining ring and the membrane shell of the flat sheet membrane filtration device.

[0010] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the edge of the thrust portion is formed with a thrust ring sealing groove, and a first lip ring is provided in the thrust ring sealing groove.

[0011] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, a first O-ring is provided at the contact position between the adapter and the connecting part, and a second O-ring is provided at the connection position between the adapter and the center rod of the flat sheet membrane filtration equipment.

[0012] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the adapter is located on the central axis of the flat sheet membrane filtration equipment.

[0013] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the thrust portion is a concave bowl-shaped structure, and the reinforcing portion is a trumpet-shaped structure with axially spaced annular reinforcing ribs.

[0014] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the first end of the connecting part is used to connect to an external pipeline for the discharge of produced water.

[0015] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the elastic locking ring is disposed within an annular groove formed by the three retaining rings.

[0016] As a preferred embodiment of the quick-release end plate structure for flat sheet membrane filtration equipment, the pressure plate is a bowl-shaped structure that matches the thrust portion.

[0017] The beneficial effects of this utility model are as follows: It is provided with an integrated thrust member, a pressure plate, an adapter, and a retaining ring; the integrated thrust member includes a thrust part, a reinforcing part, and a connecting part. The outer circumferential surface of the reinforcing part is provided with several through holes for water inlet and outlet. The connecting part is located at the central hole of the integrated thrust member and has a first end and a second end; the pressure plate matches and fits the thrust part; the adapter is disposed inside the reinforcing part, one end of the adapter is connected to the second end of the connecting part, and the other end of the adapter is connected to the adjacent membrane filter assembly; the retaining ring is formed by several retaining rings, and an annular groove is formed inside the retaining ring. An elastic locking ring is provided in the groove, which is used to lock the position between the retaining ring and the membrane shell of the flat sheet membrane filter. This invention uses an elastic locking ring to lock the position of the retaining ring and the membrane housing, eliminating the need for complex tightening operations and improving work efficiency. The thrust part of the integrated thrust member cooperates with the pressure plate to effectively prevent fluid leakage, ensuring the sealing performance of the flat sheet membrane filtration equipment and improving the filtration effect. The way the integrated thrust member and adapter connect the various components enhances the structural stability of the entire end cap, enabling it to better withstand the internal pressure and external forces of the filtration device, and extending the service life of the end cap structure and the entire flat sheet membrane filtration equipment. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a schematic cross-sectional view of the flat sheet membrane filtration device provided in the embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the intermediate connecting component and membrane housing body of the flat sheet membrane filtration device provided in this embodiment of the utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the intermediate connection component of the flat sheet membrane filtration device provided in the embodiment of this utility model;

[0023] Figure 4 This is a three-dimensional partial cross-sectional view of the intermediate connecting component of the flat sheet membrane filtration device provided in the embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the quick-release end cap assembly and membrane housing body of the flat sheet membrane filtration device provided in this embodiment of the utility model;

[0025] Figure 6 This is a cross-sectional schematic diagram of the quick-release end cap assembly of the flat sheet membrane filtration device provided in the embodiments of this utility model;

[0026] Figure 7 This is an exploded view of the quick-release end cap assembly of the flat sheet membrane filtration device provided in the embodiments of this utility model;

[0027] Figure 8 This is an exploded view of the membrane assembly elements of the flat sheet membrane filtration device provided in the embodiments of this utility model;

[0028] Figure 9 This is a schematic diagram of a universal end plate for a flat sheet membrane filtration device provided in the embodiments of this utility model;

[0029] Figure 10This is a schematic diagram of water flow in the flat sheet membrane filtration device provided in the embodiments of this utility model.

[0030] In the diagram, 1. Membrane shell; 2. Receiving cavity; 3. Membrane filtration assembly; 4. Membrane sheet; 5. Flow guide plate; 6. Center rod; 7. Connecting assembly; 8. Quick-release end plate structure; 9. Partition; 10. First support; 11. Second support; 12. Connecting pipe; 13. Reinforcing rib; 14. Support rib; 15. Water passage hole; 16. Integrated thrust component; 17. Thrust part; 18. Reinforcing part; 19. Connecting part; 20. Pressure plate; 21. Adapter; 22. Retaining ring; 23. Retaining ring; 24. Groove; 25. Elastic locking ring; 26. Universal end plate; 27. End plate body; 28. Flow tangential reinforcing rib; 29. ​​Radial reinforcing rib; 30. Circumferential reinforcing rib; 31. Upper interface; 32. Lower interface; 33. Water passage hole; 34. Reinforcing rib. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] As is well known, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The flat sheet membrane filtration device used in this embodiment of the present invention includes:

[0034] Membrane shell 1, wherein a receiving cavity 2 is formed inside the membrane shell 1;

[0035] Several membrane filter assemblies 3 are disposed in the receiving cavity 2. Each membrane filter assembly 3 includes several filter elements composed of membrane sheets 4 and flow guide disks 5. The membrane sheets 4 are installed between two adjacent flow guide disks 5.

[0036] Central rod 6, which passes through the diaphragm 4 and the guide plate 5;

[0037] A plurality of connecting components 7 are disposed within the receiving cavity 2, and the connecting components 7 are used to connect two adjacent membrane filter components 3;

[0038] The membrane housing 1 is provided with a first water inlet and an Nth water outlet at both ends, the first water inlet is configured with the first water outlet, and the Nth water outlet is configured with the Nth water inlet; the middle section of the membrane housing 1 is provided with an nth water inlet and an nth water outlet at both ends of each membrane filter assembly 3.

[0039] The adjacent (n+1)th inlet and the nth outlet, or the adjacent (n-1)th outlet and the nth inlet, are separated by the connecting component 7, where 1 < n-1 < n < n+1 < N, and n and N are both positive integers.

[0040] See Figure 2 , Figure 3 and Figure 4 In this embodiment, the connection component 7 includes:

[0041] The partition 9 is located at the longitudinal centerline of the connecting assembly 7 and is used to isolate the inlet and outlet of two adjacent membrane filtration assemblies 3.

[0042] The first support member 10 and the second support member 11 are located on both sides of the partition member 9, and the first support member 10 and the second support member 11 are connected to the partition member 9 as a whole.

[0043] A connecting pipe 12 passes through the first support member 10, the partition member 9 and the second support member 11. The connecting pipe 12 is located at the center of the first support member 10, the partition member 9 and the second support member 11. The connecting pipe 12 connects the center rods 6 of two adjacent membrane filter assemblies 3.

[0044] Specifically, the connecting component 7 serves to connect, isolate, and manage water flow. The partition 9 is located at the longitudinal centerline of the connecting component 7, effectively separating the inlet and outlet of two adjacent membrane filter components 3, preventing turbulent liquid flow between them, and ensuring that each membrane filter component 3 filters according to a predetermined process. The first support 10 and the second support 11 are located on either side of the partition 9 and are integrally connected to it, providing structural support for the entire connecting component 7 and enhancing its stability and strength. The connecting pipe 12 passes through the first support 10, the partition 9, and the second support 11, and is located at the center. The connecting pipe 12 acts as a central rod 6 connecting two adjacent membrane filter components 3, allowing for a tight structural connection between the adjacent membrane filter components 3, while also contributing to the integrity and stability of the entire filtration device.

[0045] As is known, a first connecting pipe sealing groove is formed at one end of the connecting pipe 12, and a second connecting pipe sealing groove is formed at the other end of the connecting pipe body; a connecting member sealing groove is formed at the middle edge of the partition 9; a first sealing ring is provided inside the first connecting pipe sealing groove, a second sealing ring is provided inside the second connecting pipe sealing groove, and a bidirectional sealing ring is provided inside the connecting member sealing groove.

[0046] Specifically, a first sealing ring and a second sealing ring are respectively installed in the first and second sealing grooves at both ends of the connecting pipe 12. When the connecting pipe is connected to the central rod of the membrane filter assembly, the first and second sealing rings are compressed, filling the gaps at the connection point and preventing fluid leakage from both ends of the connecting pipe. The bidirectional sealing ring in the connecting member sealing groove at the middle edge of the partition 9 plays a sealing role at the contact point between the partition and the adjacent membrane filter assembly, preventing fluid leakage at the partition.

[0047] As is known, the partition 9 is a planar disc-shaped structure with a central hole; the first support 10 and the second support 11 are both hollow bowl-shaped structures. The ends of the first support 10 and / or the second support 11 are provided with reinforcing ribs 13; the outer circumferential surfaces of the first support 10 and / or the second support 11 are provided with a plurality of circumferentially arranged support ribs 14. Water passage holes 15 are provided on the outer circumferential surfaces of both the first support 10 and the second support 11.

[0048] Specifically, the partition 9 is a planar disc-shaped structure with a central hole for the connecting pipe 12 to pass through. The shape of the planar disc effectively separates the inlet and outlet of adjacent membrane filter components 3 in the longitudinal direction, achieving liquid flow separation and ensuring that each membrane filter component 3 operates independently. The first support 10 and the second support 11 are both hollow bowl-shaped structures. This shape increases the strength and stability of the structure, enabling it to withstand certain pressure and impact forces.

[0049] Meanwhile, the reinforcing ribs 13 at the ends of the first support member 10 and / or the second support member 11 further enhance the strength of the ends, preventing deformation or damage during use and improving the durability of the entire connection assembly 7. The circumferential support ribs 14 on the outer periphery of the first support member 10 and / or the second support member 11 increase the contact area with the inner wall of the receiving cavity 2, improving the stability of the support and reducing swaying and displacement. The design of the support ribs also significantly agitates the water flow, increasing turbulence and effectively preventing fouling inside the membrane housing 1. Turbulence helps to flush away contaminants adhering to the membrane surface, keeping the membrane element clean and operating efficiently. The water passage holes 15 on the outer periphery of the first support member 10 and / or the second support member 11 allow liquid to pass smoothly while maintaining certain flow and pressure control, helping to optimize the liquid flow distribution during the filtration process.

[0050] See Figure 5 , Figure 6 and Figure 7 In this embodiment, a quick-release end plate structure for a flat sheet membrane filtration device is provided and applied to the above-mentioned flat sheet membrane filtration device. The quick-release end plate structure 8 is disposed at both ends of the membrane shell 1 and is used to seal and fasten the membrane filtration assembly 3.

[0051] The quick-release end plate structure 8 includes:

[0052] An integrated thrust member 16 includes a thrust portion 17, a reinforcing portion 18, and a connecting portion 19. The thrust portion 17 has a concave bowl-shaped structure. The reinforcing portion 18 has a trumpet-shaped structure and is provided with annular reinforcing ribs 34 at axial intervals. The outer peripheral surface of the reinforcing portion 18 is provided with several through holes for water inlet and outlet. The connecting portion 19 is located at the central hole of the integrated thrust member 16. The connecting portion 19 has a first end and a second end. The connecting portion 19 is connected to an external pipeline through the first end for the discharge of produced water.

[0053] Specifically, the thrust section 17 has a concave bowl-shaped structure that matches the internal structure of the membrane housing 1, serving as a thrust stop and positioning element to prevent excessive displacement of the membrane filter assembly 3 during operation. The trumpet-shaped structure of the reinforcing section 18 increases the strength and stability of the components. Axially spaced annular reinforcing ribs 34 further strengthen the structure of the reinforcing section 18, enabling it to withstand greater pressure and external forces without easily deforming or being damaged. Simultaneously, the design of the reinforcing ribs 34 breaks the original laminar flow state of the water, causing turbulence when the water passes through the thrust section 17. This achieves effective management and optimization of the water flow, significantly improving the efficiency and stability of the fluid treatment system. This design not only helps reduce bacterial growth and sediment accumulation but also extends the service life of key components such as the membrane, reducing system maintenance costs. Several through-holes on the outer circumference of the reinforcing section 18 allow for liquid flow, ensuring smooth water flow during the filtration process. The connecting section 19, located at the central hole, connects to an external pipeline via its first end for product water discharge, achieving effective export of filtered product water.

[0054] In this embodiment, the quick-release end plate structure 8 further includes:

[0055] Pressure plate 20, wherein the pressure plate 20 is a bowl-shaped structure that matches the thrust portion 17;

[0056] Adapter 21 connects an adjacent membrane filter assembly 3 and the integrated thrust member 16. Adapter 21 is disposed inside the reinforcing part 18 and is located on the central axis of the flat sheet membrane filtration device. One end of adapter 21 is connected to the second end of the connecting part 19, and the other end of adapter 21 is connected to an adjacent membrane filter assembly 3.

[0057] The retaining ring 22 is formed by three retaining rings 23. The three retaining rings 23 form an annular groove 24. An elastic locking ring 25 is provided in the groove 24. The elastic locking ring 25 is used to lock the position between the retaining ring 22 and the membrane shell 1.

[0058] Specifically, the pressure plate 20 is a bowl-shaped structure that matches the thrust member 17. The pressure plate 20 and the thrust member 17 cooperate with each other to more evenly bear the pressure from the inside, enhancing the stability and sealing of the quick-release end plate structure 8. The adapter 21 is located on the central axis and connects the adjacent membrane filter assembly 3 and the integrated thrust member 16, ensuring a tight connection and force transmission between the filter assembly and the integrated thrust member 16, making the entire structure more stable, and ensuring smooth fluid flow during the filtration process.

[0059] The retaining ring 22 is formed by three retaining rings 23. An elastic locking ring 25 within the internal annular groove 24 locks the retaining ring 22 to the membrane housing 1. The elastic locking ring 25, through its unique elastic deformation capability, tightly locks the retaining ring 22 to the membrane housing 1, ensuring a good seal. This prevents the end cap assembly from loosening or shifting during operation, ensuring a reliable connection between the quick-release end plate structure 8 and the membrane housing 1, thereby maintaining the sealing and stability of the entire filtration device. This design makes the disassembly and assembly of the end cap simple and quick; separation and installation can be achieved with a gentle rotation or push-pull.

[0060] In one possible embodiment, the edge of the thrust portion 17 is formed with a thrust ring sealing groove, and the interior of the thrust ring sealing groove is provided with a first lip ring; the contact position between the adapter 21 and the connecting portion 19 is provided with a first O-ring, and the connection position between the adapter 2 and the center rod 6 is provided with a second O-ring.

[0061] Specifically, the first lip ring installed in the thrust ring sealing groove at the edge of the thrust portion 17 deforms elastically when the thrust portion contacts the diaphragm housing 1, thus tightly filling the gap between the thrust portion and the diaphragm housing 1 and effectively preventing fluid leakage from this contact point. The first O-ring installed at the contact point between the adapter 21 and the connecting portion 19 compresses when they are in contact and under pressure, and its annular structure seals the contact area from all directions, preventing fluid leakage. The second O-ring at the connection point between the adapter 21 and the center rod 6 deforms when the adapter and center rod are connected and under force, filling the connection gap and preventing fluid leakage.

[0062] See Figure 8 and Figure 9 In one possible embodiment, the membrane filtration assembly 3 further includes a universal end plate 26, the universal end plate 26 comprising:

[0063] End plate body 27, the end plate body 27 is a planar disk-shaped structure with a central hole;

[0064] The flow-cutting reinforcing rib 28 includes radial reinforcing ribs 29 and circumferential reinforcing ribs 30. The circumferential reinforcing rib 30 is an annular structure arranged circumferentially on the end plate body 27, and the circumferential reinforcing rib 30 is used to guide the direction of the incoming water flow. The radial reinforcing rib 29 is an arc-shaped structure distributed radially from the central hole to the circumference, and the radial reinforcing rib 29 is used to guide the direction of the incoming water flow.

[0065] Specifically, the end plate body 27 serves as the basic structure, with its central hole used for mounting and fixing peripheral components. The circumferential reinforcing ribs 30 in the flow-cutting reinforcing ribs 28 are arranged circumferentially along the end plate body 27, forming a ring structure. When the inlet water flows into contact with the circumferential reinforcing ribs 30, it flows along the direction guided by them, thus achieving a uniform distribution of water flow in the circumferential direction. This ensures that all parts of the membrane 4 are fully utilized, improving filtration efficiency. The radial reinforcing ribs 29 are distributed radially from the central hole outwards in an arc shape. After passing through the central hole, the inlet water flow is guided by the radial reinforcing ribs 29, diffusing towards the edge of the end plate body 27, further optimizing the water flow distribution. This effectively guides the water flow into the membrane element in a rotating posture, forming a rotating water flow on the membrane surface, reducing water flow turbulence and local concentration, making the filtration process more stable and efficient. At the same time, it helps reduce the deposition and accumulation of dirt on the membrane surface, enhances the flushing effect of water flow, further reduces the risk of fouling, ensures the long-term stable operation of membrane elements, and improves the durability and service life of membrane elements.

[0066] In one possible embodiment, each of the guide plates 5 is provided with a fourth sealing ring on both the upper and lower sides, and a diaphragm 4 is clamped between every two guide plates 5; a second sealing ring is provided in the central rod sealing groove on the central rod 6; a second lip ring is provided in the end plate sealing groove of the universal end plate 26.

[0067] In one possible embodiment, the general end plate 26 is provided with an upper interface 31 and a lower interface 32;

[0068] The upper interface 31 of the universal end plate 26 located on the upper part of the membrane filter assembly 3 is connected to the center rod 6 by a fastening nut, and the lower interface 32 of the universal end plate 26 located on the upper part of the membrane filter assembly 3 is connected to the adjacent guide plate 5;

[0069] The upper interface 31 of the universal end plate 26 located at the lower part of the membrane filter assembly 3 is connected to the adjacent guide plate 5, and the lower interface 32 of the universal end plate 26 located at the lower part of the membrane filter assembly 3 is connected to the center rod 6 through a fastening nut.

[0070] Specifically, for the universal end plate 26 located on the upper part of the membrane filter assembly 3, the upper interface 31 of the universal end plate 26 is connected to the central rod 6 by a fastening nut, which can firmly fix the universal end plate 26 to the central rod 6 and ensure the stability of the position of the upper universal end plate 26. The lower interface 32 is connected to the adjacent guide plate 5, realizing a tight connection between the universal end plate 26 and the guide plate 5, ensuring smooth water flow and continuity of the filtration process.

[0071] The universal end plate 26, located at the bottom of the membrane filter assembly 3, has its upper interface 31 connected to the adjacent guide plate 5, and its lower interface 32 connected to the central rod 6 via a fastening nut. This connection method also ensures the stability of the lower end plate, making the entire membrane filter assembly 3 more compact and stable in structure. This different connection method of the universal end plate 26 allows both the upper and lower universal end plates 26 to function effectively during operation, ensuring uniform water flow distribution and efficient filtration, while also enhancing the structural strength and stability of the entire membrane filter assembly 3.

[0072] In one possible embodiment, the central rod 6 is a hollow structure, and a plurality of water-permeable holes 33 are distributed on the central rod 6. The water-permeable holes 33 are used to collect the produced water after being filtered by the guide plate 5 and the membrane 4.

[0073] Specifically, the central rod 6 is designed as a hollow structure, providing storage space for the filtered permeate. During the filtration process, the permeate, filtered by the guide plate 5 and membrane 4, can enter the interior of the central rod 6 through several permeable holes 33 distributed on it. The permeable holes 33 are evenly distributed on the central rod 6, allowing the permeate to smoothly enter from various positions, ensuring comprehensive and efficient permeate collection. This structural design effectively collects the filtered permeate and concentrates it inside the central rod 6 for subsequent discharge or treatment.

[0074] See Figure 10 The working principle of the flat sheet membrane filtration equipment applied in this utility model is as follows:

[0075] The liquid to be filtered enters through the first inlet at one end of the membrane housing 1, while water can also enter through the Nth inlet at the other end. After entering the receiving cavity 2 of the membrane housing 1, the liquid flows through the membrane filter assembly 3. In the membrane filter assembly 3, a membrane 4 is installed between two adjacent guide plates 5, and the liquid flows evenly across the surface of the membrane 4 under the guidance of the guide plates 5 for filtration.

[0076] The connecting component 7 connects adjacent membrane filter components 3 and acts as a barrier between adjacent (n+1)th inlet and nth outlet, or between (n-1)th outlet and nth inlet, ensuring the liquid flows along a predetermined path and guaranteeing orderly filtration. Quick-release end plate structures 8 are installed at both ends of the membrane housing 1 to seal and secure the membrane filter components 3, ensuring the overall sealing and stability of the device. The filtered concentrate flows out from the first outlet to the Nth outlet. The nth inlet and nth outlet at both ends of each membrane filter component 3 in the middle section of the membrane housing 1 can also participate in liquid inflow and outflow control, connected by multiple central rods 6, allowing the treated permeate to be produced from the ends of the edge central rods 6.

[0077] In summary, in the flat-panel membrane filtration device of this invention, the connecting component 7 serves to connect, isolate, and manage water flow. The partition 9 is located at the longitudinal centerline of the connecting component 7, effectively separating the inlet and outlet of two adjacent membrane filtration components 3, preventing turbulent liquid flow between the two components, and ensuring that each component filters according to a predetermined process. The first support 10 and the second support 11 are located on either side of the partition 9 and are integrally connected to it, providing structural support for the entire connecting component 7 and enhancing its stability and strength. The connecting pipe 12 passes through the first support 10, the partition 9, and the second support 11, and is located at the center. The connecting pipe 12 acts as the central rod 6 connecting two adjacent membrane filtration components 3, allowing for a tight structural connection between the adjacent components and contributing to the overall integrity and stability of the filtration device. The partition 9 is a planar disc-shaped structure with a central hole for the connecting pipe 12 to pass through. The shape of the planar disc effectively separates the inlet and outlet of adjacent membrane filter components 3 in the longitudinal direction, achieving liquid flow separation and ensuring that each membrane filter component 3 operates independently. The first support 10 and the second support 11 are both hollow bowl-shaped structures. This shape increases the strength and stability of the structure, enabling it to withstand certain pressure and impact forces. The reinforcing ribs 13 at the ends of the first support 10 and / or the second support 11 further enhance the end strength, preventing deformation or damage during use and improving the overall durability of the connecting assembly 7. The circumferential support ribs 14 on the outer periphery of the first support 10 and / or the second support 11 increase the contact area with the inner wall of the receiving cavity 2, improving support stability and reducing swaying and displacement. The water passage holes 15 on the outer periphery of the first support 10 and / or the second support 11 allow liquid to pass smoothly while maintaining certain flow and pressure control, helping to optimize the liquid flow distribution during the filtration process. The thrust section 17 has a concave bowl-shaped structure that matches the internal structure of the membrane housing 1, serving as a thrust stop and positioning element to prevent excessive displacement of the membrane filter assembly 3 during operation. The trumpet-shaped structure of the reinforcing section 18 increases the strength and stability of the components. Axially spaced annular reinforcing ribs 34 further strengthen the structure of the reinforcing section 18, enabling it to withstand greater pressure and external forces without easily deforming or being damaged. Several through holes on the outer circumference of the reinforcing section 18 allow for liquid flow, ensuring smooth water flow during filtration. The connecting section 19, located at the central hole, connects to an external pipeline via its first end for product water discharge, achieving effective export of filtered product water. The end plate body 27 serves as the basic structure, with its central hole used for mounting and fixing peripheral components. The circumferential reinforcing ribs 30 in the flow-cutting reinforcing ribs 28 are arranged circumferentially along the end plate body 27, forming an annular structure.When the inlet water flows into the circumferential reinforcing rib 30, it flows along the direction guided by the rib, thus achieving a uniform distribution of water flow in the circumferential direction. This ensures that all parts of the membrane 4 are fully utilized, improving filtration efficiency. The radial reinforcing ribs 29 are distributed radially from the central hole outwards in an arc shape. After passing through the central hole, the inlet water is guided by the radial reinforcing ribs 29 and diffuses towards the edge of the end plate body 27, further optimizing the water flow distribution, reducing turbulence and local concentration, and making the filtration process more stable and efficient. This invention significantly reduces the types and number of components, simplifies the installation process, and improves installation efficiency; it reduces material consumption and production costs, while the quick-release end plate structure 8 simplifies the maintenance process and reduces maintenance costs; by introducing a parallel inlet / outlet design, it achieves parallel and uniform water flow within the membrane housing 1, ensuring that each membrane assembly element receives an equal amount of water flow and pressure, improving filtration efficiency and stability; and it achieves efficient space utilization, reducing the floor space required.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A quick-release end plate structure for a flat sheet membrane filtration apparatus, characterized by, It includes an integrated thrust member (16), a pressure plate (20), an adapter (21), and a retaining ring (22); The integrated thrust member (16) includes a thrust portion (17), a reinforcing portion (18), and a connecting portion (19). The reinforcing portion (18) has several through holes on its outer peripheral surface for water inlet and outlet. The connecting portion (19) is located at the center hole of the integrated thrust member (16). The connecting portion (19) has a first end and a second end. The pressure plate (20) is fitted and matched with the thrust portion (17). The adapter (21) is disposed inside the reinforcing part (18), one end of the adapter (21) is connected to the second end of the connecting part (19), and the other end of the adapter (21) is connected to the adjacent membrane filter assembly (3); The retaining ring (22) is formed by several retaining rings (23). An annular groove (24) is formed inside the retaining ring (22). An elastic locking ring (25) is provided in the groove (24). The elastic locking ring (25) is used to lock the position between the retaining ring (22) and the membrane shell (1) of the flat sheet membrane filtration device.

2. The quick release end plate structure for a flat sheet membrane filtration apparatus according to claim 1, characterized in that, The edge of the thrust portion (17) is formed with a thrust ring sealing groove, and a first lip ring is provided in the thrust ring sealing groove.

3. The quick release end plate structure for a flat sheet membrane filtration apparatus according to claim 1, characterized in that, The adapter (21) and the connecting part (19) are provided with a first O-ring at the contact position, and the adapter (21) and the central rod (6) of the flat sheet membrane filter are provided with a second O-ring at the connection position.

4. The quick-release end plate structure for a flat sheet membrane filtration device according to claim 3, characterized in that, The adapter (21) is located on the central axis of the flat sheet membrane filtration device.

5. The quick release end plate structure for flat sheet membrane filtration apparatus according to claim 1, wherein The thrust portion (17) is a concave bowl-shaped structure, and the reinforcing portion (18) is a trumpet-shaped structure with axially spaced annular reinforcing ribs (34).

6. The quick release end plate structure for a flat sheet membrane filtration apparatus according to claim 1, wherein The first end of the connecting part (19) is used to connect to an external pipeline for the discharge of produced water.

7. The quick release end plate structure for a flat sheet membrane filtration apparatus according to claim 1, wherein The elastic locking ring (25) is disposed within an annular groove (24) formed by the three retaining rings (23).

8. The quick release end plate structure for flat sheet membrane filtration apparatus according to claim 1, wherein The pressure plate (20) is a bowl-shaped structure that matches the thrust portion (17).

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