A quick assembly and disassembly device for membrane shell end cover

Abstract

The utility model provides a kind of membrane shell end cover quick assembly and disassembly device, comprising: membrane shell main body, its both ends are provided with membrane shell outer ring, the accommodating cavity is opened in the membrane shell main body inside, the center tube is provided with along membrane shell main body axial direction in the accommodating cavity, the center tube side is opened with flow guide hole;Membrane shell end cover is divided into two groups and is respectively arranged in the both ends of the membrane shell main body, the outer side of the membrane shell end cover is sealed with the inner wall of accommodating cavity sliding connection, to make the membrane shell end cover along accommodating cavity axial direction assembly and disassembly;End cover assembly and disassembly component, it is detachably clamped in the outer side of the membrane shell outer ring.The utility model is detachably clamped with end cover assembly and disassembly component and membrane shell outer ring, in combination with the sealed sliding connection of membrane shell end cover and the inner wall of accommodating cavity, both can realize the quick assembly and disassembly of membrane shell end cover to simplify operation, and can also guarantee the stable flow guiding of the flow guide hole of the center tube in accommodating cavity, ensure the sealing and high efficiency of membrane separation process.

Description

Technical Field

[0001] This utility model relates to the field of end cap loading and unloading technology, and more specifically, to a quick loading and unloading device for membrane end caps. Background Technology

[0002] Membrane separation technologies (such as reverse osmosis, ultrafiltration, and nanofiltration) are core technologies in water treatment, biopharmaceutical purification, and industrial fluid purification. The core execution unit is the membrane module, and the membrane housing, as the carrier and sealing medium for the membrane module, directly determines the operational stability and maintenance efficiency of the membrane separation system. The membrane housing end cap, as a key component of the membrane housing, primarily functions to seal the internal cavity (preventing fluid leakage), fix the internal central tube and membrane element (ensuring precise flow guidance through the central tube's guide holes), and the installation and removal of the end cap is a necessary prerequisite for the regular cleaning and replacement of the membrane element (a routine maintenance step in membrane separation systems).

[0003] Currently, the mainstream method for installing and removing membrane housing end caps in the industry still relies on traditional threaded connections: the membrane housing end cap is connected to the membrane housing body via multiple sets of circumferentially distributed bolts and nuts. During installation and removal, tools such as wrenches are required to tighten or loosen the bolts one by one. To ensure the high-pressure sealing performance of the membrane housing cavity, the bolts must reach a specified tightening torque. This is not only cumbersome but also requires multiple people to work together (one person to fix the end cap and one person to operate the tools). As a result, the installation and removal of a single set of end caps can take as long as 15-30 minutes, which seriously extends the downtime for membrane element maintenance. This inefficiency is even more pronounced in large-scale industrial membrane separation systems (such as large water treatment plants) where multiple membrane housings are maintained simultaneously.

[0004] Meanwhile, traditional threaded connections also have significant drawbacks: Firstly, bolts exposed to humid and corrosive fluids for extended periods are prone to corrosion and jamming. Disassembly requires forceful hammering tools, which can easily deform the end cap and damage the sealing ring, leading to subsequent seal failure and increased system rework costs. Secondly, the circumferential distribution of bolts requires space at the end of the diaphragm housing, increasing its overall volume and limiting its adaptability to confined installation spaces. Furthermore, traditional installation and removal methods demand high operator skills, resulting in persistently high labor and tool wear costs.

[0005] Therefore, there is an urgent need for a technology to replace the traditional threaded connection method for installing and removing membrane housing end caps, in order to solve the problems of simplifying the installation and removal of membrane housing end caps, shortening maintenance time, ensuring sealing reliability, and reducing the space occupied at the end of the membrane housing, so as to meet the actual needs of membrane separation systems for "efficient operation and maintenance, miniaturized adaptation, and low-cost operation". Summary of the Invention

[0006] In view of this, the present invention proposes a quick loading and unloading device for membrane housing end caps, which aims to solve the problems of simplifying the loading and unloading operation of membrane housing end caps, shortening maintenance time, ensuring sealing reliability, and reducing the space occupied at the end of the membrane housing.

[0007] In one aspect, this utility model provides a quick-release device for membrane housing end caps, comprising: The membrane shell body has membrane shell outer rings at both ends, and a receiving cavity is opened inside the membrane shell body. A central tube is arranged in the receiving cavity along the axial direction of the membrane shell body, and a flow guide hole is opened on the side of the central tube. The membrane housing end cap is divided into two groups and is respectively disposed at both ends of the membrane housing body. The outer side of the membrane housing end cap is slidably connected to the inner wall of the receiving cavity, so that the membrane housing end cap can be installed and removed along the axial direction of the receiving cavity. The end cap assembly is detachably snapped onto the outer side of the outer ring of the membrane housing.

[0008] Furthermore, the end cap loading / unloading assembly includes: A ring-shaped fixing frame has a support plate fixedly connected to the middle of the fixing frame, and the support plate located at the center of the fixing frame has a threaded hole. The hook assembly has several groups, which are evenly distributed on the outer side of the fixing frame; The propulsion assembly includes a screw with an external thread on its outer side. The external thread is adapted to the internal thread of a threaded hole. The screw passes through the inner side of the threaded hole. One end of the screw is fixed to a rotating wheel above a fixed frame, and the other end is fixed to a snap-fit ​​part. The screw and the threaded hole form a threaded transmission connection through threaded engagement.

[0009] Furthermore, the hook assembly includes: The hook has one end hinged to the outer side of the fixing frame, and the other end of the hook has a snap-fit ​​groove that snaps into the outer ring of the membrane shell. A spring, one end of which is fixed to the side of the hook near the fixing frame, and the other end of which is fixed to the side surface of the fixing frame near the membrane housing body.

[0010] Furthermore, the snap-fit ​​portion includes: A fixing block, the upper surface of which is fixedly connected to the screw, and a fixing ring is provided on the lower surface of the fixing block; The first clamp is arc-shaped, and its inner side is fitted onto the outer side of the fixing ring. One end of the first clamp is provided with a buckle, and the first clamp is fixedly connected to the fixing ring. The second clamp is configured as an arc shape corresponding to the first clamp. The second clamp is detachably sleeved on the outer side of the fixing ring. One end of the second clamp has a slot corresponding to the buckle, and the other end is hinged to the end of the first clamp away from the buckle.

[0011] Furthermore, a handle is provided at the edge of the upper surface of the wheel, the handle is horizontally arranged along the radial direction of the wheel, and the handle is rotatably connected to the wheel.

[0012] Furthermore, the membrane housing end cap includes: The end cap body has a first liquid outlet pipe fixedly connected along its central axis. A connecting ring is provided on the outer side of one end of the first liquid outlet pipe. The outer contour diameter of the connecting ring is adapted to the outer contour diameter of the fixed ring. The end of the first liquid outlet pipe away from the connecting ring passes through the end cap body to the side of the end cap body facing the membrane housing cavity. A positioning ring is disposed on the side surface of the end cap body facing the membrane housing cavity, and the positioning ring is connected to the end cap body by a connecting post; The overall outer contour shape of the connecting ring and the fixed ring when they are coaxially connected is adapted to the internal space formed after the first clamp and the second clamp are closed.

[0013] Furthermore, a sealing ring is provided on the outer side of the end cap body.

[0014] Furthermore, sealing rings are provided at both ends of the membrane housing body, the end face of the sealing ring is parallel to the end face of the membrane housing body, and the inner diameter of the sealing ring smoothly transitions with the inner wall of the receiving cavity. The outer side of the membrane housing body is provided with a second liquid outlet pipe and a liquid inlet pipe. The second liquid outlet pipe and the liquid inlet pipe respectively penetrate the outer side of the membrane housing body, and their pipe opening positions correspond to the receiving cavity areas between the end cap bodies and the positioning rings at both ends of the membrane housing body.

[0015] Furthermore, limiting blocks are provided on the outer surfaces of both ends of the central tube. The limiting blocks are annular and have reinforcing ribs arranged radially outward from their center. The limiting blocks are fixedly connected to the inner wall of the receiving cavity so that when the membrane end cap is installed in place along the axial direction of the receiving cavity, the upper surface of the limiting block fits against the lower surface of the positioning ring.

[0016] Furthermore, each end of the central tube is provided with a connector, and the connector has a through water flow channel inside; the ends of the two sets of connectors away from the central tube are connected to the bottom end of the first liquid outlet pipe of the membrane shell end caps on both sides through the water flow channel, and one end of the connector is detachably connected to the central tube, and the other end is detachably connected to the first liquid outlet pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are that, through the detachable snap-fit ​​engagement between the end cap loading and unloading assembly and the outer ring of the membrane housing, combined with the sealed sliding connection between the membrane housing end cap and the inner wall of the receiving cavity, it not only replaces the traditional bolt structure to achieve quick single-person loading and unloading of the membrane housing end cap (significantly shortening maintenance time and improving efficiency), but also avoids component damage caused by bolt corrosion, continuously ensuring the sealing performance of the receiving cavity (reducing fluid leakage rate), while saving space at the end of the membrane housing to reduce the overall volume (expanding adaptability to confined spaces), and eliminating the need to control bolt torque (reducing reliance on operator skills and maintenance costs). With the stable setting of the central tube and guide hole in the receiving cavity, it ensures that fluid flow is not affected during the loading and unloading of the end cap, comprehensively solving the pain points of the traditional structure and meeting the needs of efficient operation and maintenance, stable sealing, miniaturization and low-cost operation of membrane separation systems. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of the quick-release device for the membrane shell end cap provided in this embodiment of the utility model; Figure 2 A cross-sectional view of the quick-release device for membrane housing end caps provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the end cap loading and unloading assembly provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the membrane shell end cap provided in an embodiment of the present utility model; Figure 5 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 6 for Figure 2 A magnified view of a portion of point B in the middle.

[0019] In the diagram: 100-Membrane housing body; 110-Membrane housing outer ring; 120-Second outlet pipe; 130-Inlet pipe; 140-Limiting block; 150-Central tube; 151-Guide hole; 160-Sealing retaining ring; 170-Connector; 200-Membrane housing end cap; 210-End cap body; 220-First outlet pipe; 221-Connecting ring; 230-Positioning ring; 240-Connecting column; 250-Sealing ring; 300-End cap mounting and dismounting assembly; 310-Fixing frame; 311-Support plate; 320-Screw; 330-Roller; 331-Handle; 340-Hook; 341-Snap-fit ​​groove; 350-Spring; 360-Fixing block; 361-Fixing ring; 370-First clamp; 380-Second clamp; 390-Snap-fit; 391-Slot. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] See Figure 1 and Figure 2As shown, this embodiment provides a quick loading and unloading device for a membrane housing end cap 200, including: a membrane housing body 100, a membrane housing end cap 200, and an end cap loading and unloading assembly 300.

[0025] Specifically, the membrane shell body 100 has membrane shell outer rings 110 at both ends, and a receiving cavity is opened inside the membrane shell body 100. A central tube 150 is arranged in the receiving cavity along the axial direction of the membrane shell body 100, and a guide hole 151 is opened on the side of the central tube 150. The membrane housing end cap 200 is divided into two groups and is respectively disposed at both ends of the membrane housing body 100. The outer side of the membrane housing end cap 200 is slidably connected to the inner wall of the receiving cavity, so that the membrane housing end cap 200 can be installed and removed along the axial direction of the receiving cavity. The end cap mounting and dismounting assembly 300 is detachably snapped onto the outer side of the outer ring 110 of the membrane housing.

[0026] The above embodiment utilizes the detachable snap-fit ​​connection between the end cap loading / unloading assembly 300 and the outer ring 110 of the membrane housing, combined with the sealed sliding connection between the membrane housing end cap 200 and the inner wall of the receiving cavity. This not only replaces the traditional bolt structure to achieve quick single-person loading and unloading of the membrane housing end cap 200 (significantly shortening maintenance time and improving efficiency), but also avoids component damage caused by bolt corrosion, continuously ensuring the sealing performance of the receiving cavity (reducing fluid leakage rate). At the same time, it saves space at the end of the membrane housing to reduce the overall volume (expanding adaptability to confined spaces), and eliminates the need to control bolt torque (reducing reliance on operator skills and maintenance costs). With the stable setting of the central tube 150 and the guide hole 151 inside the receiving cavity, it ensures that fluid flow is not affected during the loading and unloading of the end cap, comprehensively solving the pain points of the traditional structure and meeting the needs of efficient operation and maintenance, stable sealing, miniaturization and low-cost operation of membrane separation systems.

[0027] See Figure 3 As shown, the end cap loading / unloading assembly 300 includes: The fixing frame 310 is ring-shaped, and a support plate 311 is fixedly connected to the middle of the fixing frame 310. The support plate 311 located at the center of the fixing frame 310 has a threaded hole. The hook 340 assembly has several sets, which are evenly distributed on the outer side of the fixing frame 310; The propulsion assembly includes a screw 320 with an external thread on its outer side. The external thread is adapted to the internal thread of a threaded hole. The screw 320 passes through the inner side of the threaded hole. One end of the screw 320 is fixedly connected to a rotating wheel 330 above a fixing frame 310, and the other end is fixedly connected to a snap-fit ​​part. The screw 320 and the threaded hole form a threaded transmission connection through threaded engagement.

[0028] Specifically, the hook 340 assembly includes: The hook 340 has one end hinged to the outer side of the fixing frame 310, and the other end of the hook 340 is provided with a snap-fit ​​groove 341, which snaps into the outer ring 110 of the membrane shell. The spring 350 has one end fixed to the side of the hook 340 near the fixing frame 310, and the other end fixed to the side surface of the fixing frame 310 near the membrane housing body 100.

[0029] Specifically, the snap-fit ​​portion includes: A fixing block 360, the upper surface of which is fixedly connected to the screw 320, and a fixing ring 361 is provided on the lower surface of the fixing block 360; The first clamp 370 is arc-shaped. The inner side of the first clamp 370 is fitted onto the outer side of the fixing ring 361. One end of the first clamp 370 is provided with a buckle 390. The first clamp 370 is fixedly connected to the fixing ring 361. The second clamp 380 is configured as an arc shape corresponding to the first clamp 370. The second clamp 380 is detachably sleeved on the outer side of the fixing ring 361. One end of the second clamp 380 has a slot 391 corresponding to the buckle 390, and the other end is hinged to the end of the first clamp 370 away from the buckle 390.

[0030] Specifically, a handle 331 is provided at the edge of the upper surface of the rotating wheel 330. The handle 331 is arranged horizontally along the radial direction of the rotating wheel 330, and the handle 331 is rotatably connected to the rotating wheel 330.

[0031] In the above embodiment, the annular fixing frame 310 forms a coaxial transmission structure with the central support plate 311 and the threaded hole at the center. This provides stable radial support for the screw 320 to avoid transmission eccentricity (preventing deformation of the end cap under force) and can also adapt to outer rings 110 of different diameter diaphragm housings (improving versatility). Multiple evenly distributed hook assemblies, in conjunction with springs 350 for pre-tensioning, allow for quick engagement of the outer ring 110 of the diaphragm housing simply by moving the hooks 340. The springs 350 automatically provide continuous pre-tensioning force, enabling single-person fixing within 10 seconds with uniform fixing force (preventing deformation of the outer ring 110 of the diaphragm housing), solving the problems of long fixing time and uneven force distribution in traditional tools. The threaded transmission between the screw 320 and the threaded hole converts the rotation of the rotating wheel 330 into axial linear motion. It can precisely adjust the moving speed of the end cap, reduce the force intensity and protect the end cap and sealing ring 250; the snap-fit ​​part, through the "hinged + snap-fit ​​390 slot 391" design, can quickly lock the end cap connecting ring 221 and the fixing ring 361 coaxially, ensuring that the force point of the end cap coincides with the axis of the screw 320 (avoiding sealing slippage and jamming), simplifying the docking process; the radial horizontal handle 331 on the edge of the rotating wheel 330 extends the lever arm (saving more than 40% of the effort) and can rotate relative to the rotating wheel 330, adapting to different station operators to flexibly apply force, further improving the convenience of operation, and ultimately enabling a single person to efficiently complete the loading and unloading of the end cap, while ensuring stable transmission and no damage to the parts, comprehensively solving the pain points of poor adaptability, cumbersome operation and vulnerable parts of traditional loading and unloading tools.

[0032] See Figure 4 and Figure 5 As shown, the membrane housing end cap 200 includes: The end cap body 210 has a first liquid outlet pipe 220 fixedly connected along its central axis. A connecting ring 221 is provided on the outer side of one end of the first liquid outlet pipe 220. The outer contour diameter of the connecting ring 221 is adapted to the outer contour diameter of the fixing ring 361. The end of the first liquid outlet pipe 220 away from the connecting ring 221 passes through the end cap body 210 to the side of the end cap body 210 facing the membrane housing cavity. A positioning ring 230 is disposed on the side surface of the end cap body 210 facing the membrane housing cavity, and the positioning ring 230 is connected to the end cap body 210 by a connecting post 240. The overall outer contour shape of the connecting ring 221 when it is coaxially connected with the fixing ring 361 is adapted to the internal space formed after the first clamp 370 and the second clamp 380 are closed.

[0033] Specifically, a sealing ring 250 is provided on the outer side of the end cap body 210.

[0034] See Figure 1 , Figure 2 and Figure 6As shown, sealing rings 160 are provided at both ends of the membrane housing body 100. The end face of the sealing ring 160 is parallel to the end face of the membrane housing body 100, and the inner diameter of the sealing ring 160 smoothly transitions with the inner wall of the receiving cavity. The outer side of the membrane housing body 100 is provided with a second liquid outlet pipe 120 and a liquid inlet pipe 130. The second liquid outlet pipe 120 and the liquid inlet pipe 130 respectively penetrate the outer side of the membrane housing body 100, and their pipe opening positions correspond to the receiving cavity area between the end cap body 210 and the positioning ring 230 at both ends of the membrane housing body 100.

[0035] Specifically, the outer surfaces of both ends of the central tube 150 are provided with limiting blocks 140. The limiting blocks 140 are annular and have reinforcing ribs arranged radially outward from their center. The limiting blocks 140 are fixedly connected to the inner wall of the receiving cavity so that when the membrane end cap 200 is installed in place along the axial direction of the receiving cavity, the upper surface of the limiting block 140 is in contact with the lower surface of the positioning ring 230.

[0036] Specifically, each end of the central tube 150 is provided with a connector 170, and the connector 170 has a through water flow channel inside; the ends of the two sets of connectors 170 away from the central tube 150 are connected to the bottom end of the first liquid outlet pipe 220 of the membrane shell end caps 200 on both sides through the water flow channel, and one end of the connector 170 is detachably connected to the central tube 150, and the other end is detachably connected to the first liquid outlet pipe 220.

[0037] In the above embodiment, the first liquid outlet pipe 220 in the middle of the end cap body 210 not only realizes the function of producing and discharging water, but its outer connecting ring 221 can also be precisely matched with the fixing ring 361 of the end cap loading and unloading assembly 300. Combined with the matching of the two with the internal space of the clamp when they are coaxially connected, it ensures that the end cap and the loading and unloading assembly can be quickly and coaxially connected, avoiding the loading and unloading jamming caused by the traditional docking deviation. The sealing ring 250 on the outer side of the end cap body 210 and the sealing retaining rings 160 at both ends of the membrane housing body 100 form a double seal, further improving the overall sealing performance and solving the problem of easy leakage of traditional single seal. The positioning ring 230 of the end cap body 210 is fixed by the connecting post 240, and when installed in place, it is aligned with the central tube 150. The limiting block 140 fits snugly, and its annular structure and radial reinforcing ribs (to ensure support stability) precisely define the end cap installation position, ensuring accurate connection between the first liquid outlet pipe 220 and the product water flow channel of the connector 170, avoiding the poor flow caused by inaccurate positioning in traditional installations. The connectors 170 at both ends of the central tube 150 not only achieve stable flow between the central tube 150 and the first liquid outlet pipe 220 through their internal product water flow channels, but their detachable connection design also facilitates quick docking during end cap installation and removal and subsequent maintenance and replacement without the need for overall disassembly, greatly improving the convenience of operation and maintenance, and comprehensively solving the pain points of inaccurate positioning, unreliable sealing, poor flow, and cumbersome maintenance of traditional membrane housing end caps 200.

[0038] In a specific embodiment of this application, the above steps are implemented in the following ways: The operation can be carried out by a single operator. First, align the fixing bracket 310 of the end cap mounting and dismounting assembly 300 with the outer ring 110 of the membrane housing at the end of the membrane housing body 100. Then, pull the hook 340 (tension spring 350) of the hook 340 assembly outward to align the snap-fit ​​groove 341 at the end of the hook 340 with the outer ring 110 of the membrane housing and release it. The spring 350 returns to its original position, causing the hook 340 to snap tightly with the outer ring 110 of the membrane housing, thus completing the fixation of the end cap mounting and dismounting assembly 300 to the membrane housing body 100. Subsequently, open the second clamp 380 of the snap-fit ​​part (rotating around the hinge point with the first clamp 370), and align the connecting ring 221 of the membrane housing end cap 200 with the fixing ring 361 of the fixing block 360 coaxially. Close the second clamp 380 to lock the snap 391 of the groove 391 with the snap 390 of the first clamp 370. At this time, the overall outer contour of the connecting ring 221 and the fixing ring 361 fits the internal space of the clamp, ensuring a stable connection between the snap-fit ​​part and the end cap. When disassembling the end cap, the operator holds the radial handle 331 on the edge of the rotating wheel 330 (the handle 331 can rotate relative to the rotating wheel 330 to adapt to the direction of force applied by the hand), and rotates the rotating wheel 330 counterclockwise, driving the screw 320 to make threaded transmission along the threaded hole of the support plate 311 of the fixing frame 310 (external thread and internal thread are engaged), so that the screw 320 moves axially outward, and then pulls the membrane housing end cap 200 along the inner wall of the receiving cavity through the snap-fit ​​part to seal and slide—the sealing ring 250 on the outer side of the end cap body 210 is always in contact with the inner wall of the receiving cavity to avoid leakage of residual water in the cavity during disassembly. Continue pulling until the end cap is completely separated from the membrane housing body 100, and the membrane element in the receiving cavity can be taken out (the guide hole 151 on the side of the central tube 150 is temporarily exposed, which does not affect subsequent operations). After replacing the membrane element, place it back into the receiving cavity and align it with the central tube 150. Then, reverse the process to install the end cap: push the end cap so that the bottom of the first outlet pipe 220 is close to the connector 170 at the end of the central tube 150. The product water flow channel is connected through the detachable structure of the connector 170 (such as a plug-in fit). Then, fix the end cap through the snap-fit ​​part of the end cap mounting and dismounting assembly 300. Rotate the wheel 330 clockwise, and the screw 320 pushes the end cap to slide inward along the axis of the receiving cavity until the end face of the end cap body 210 is in contact with the sealing ring 160 of the membrane housing body 100 (forming an auxiliary seal), and the positioning ring 230 of the end cap is in close contact with the limiting block 140 of the central tube 150 (the reinforcing rib of the limiting block 140 ensures stable force). At this time, the sealing ring 250 forms a main seal with the inner wall of the receiving cavity, and the end cap is installed in place. After the system restarts, raw water enters the receiving chamber (located in the area between the end cap body 210 and the positioning ring 230) from the inlet pipe 130. After being filtered by the membrane element, the clean product water flows into the central pipe 150 through the guide hole 151 and then exits from the first outlet pipe 220 through the product water flow channel of the connector 170. Unfiltered concentrated water is discharged from the second outlet pipe 120.No bolts or tools are required throughout the process. The installation and removal of a single end cap takes only 3-5 minutes (more than 70% shorter than the traditional bolt method). Furthermore, the sealing structure and positioning components work together to ensure that the system is leak-free and the flow is stable, making it fully compatible with the efficient operation and maintenance needs of industrial water treatment.

[0039] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release device for membrane housing end caps, characterized in that, include: The membrane shell body has membrane shell outer rings at both ends, and a receiving cavity is opened inside the membrane shell body. A central tube is arranged in the receiving cavity along the axial direction of the membrane shell body, and a flow guide hole is opened on the side of the central tube. The membrane housing end caps are divided into two groups and are respectively disposed at both ends of the membrane housing body. The outer side of the membrane housing end caps is slidably connected to the inner wall of the receiving cavity. The end cap assembly is detachably snapped onto the outer side of the outer ring of the membrane housing.

2. The quick-release device for membrane housing end caps according to claim 1, characterized in that, The end cap loading / unloading assembly includes: A ring-shaped fixing frame has a support plate fixedly connected to the middle of the fixing frame, and the support plate located at the center of the fixing frame has a threaded hole. The hook assembly has several groups, which are evenly distributed on the outer side of the fixing frame; The propulsion assembly includes a screw with an external thread on its outer side. The external thread is adapted to the internal thread of a threaded hole. The screw passes through the inner side of the threaded hole. One end of the screw is fixed to a rotating wheel above a fixed frame, and the other end is fixed to a snap-fit ​​part. The screw and the threaded hole form a threaded transmission connection through threaded engagement.

3. The quick-release device for membrane housing end caps according to claim 2, characterized in that, The hook assembly includes: The hook has one end hinged to the outer side of the fixing frame, and the other end of the hook has a snap-fit ​​groove that snaps into the outer ring of the membrane shell. A spring, one end of which is fixed to the side of the hook near the fixing frame, and the other end of which is fixed to the side surface of the fixing frame near the membrane housing body.

4. The quick-release device for membrane housing end caps according to claim 2, characterized in that, The snap-fit ​​portion includes: A fixing block, the upper surface of which is fixedly connected to the screw, and a fixing ring is provided on the lower surface of the fixing block; The first clamp is arc-shaped, and its inner side is fitted onto the outer side of the fixing ring. One end of the first clamp is provided with a buckle, and the first clamp is fixedly connected to the fixing ring. The second clamp is configured as an arc shape corresponding to the first clamp. The second clamp is detachably sleeved on the outer side of the fixing ring. One end of the second clamp has a slot corresponding to the buckle, and the other end is hinged to the end of the first clamp away from the buckle.

5. The quick-release device for membrane housing end caps according to claim 4, characterized in that, A handle is provided at the edge of the upper surface of the wheel, and the handle is horizontally arranged along the radial direction of the wheel, and the handle is rotatably connected to the wheel.

6. The quick-release device for membrane housing end caps according to claim 1, characterized in that, The membrane end cap includes: The end cap body has a first liquid outlet pipe fixedly connected along its central axis. A connecting ring is provided on the outer side of one end of the first liquid outlet pipe. The outer contour diameter of the connecting ring is adapted to the outer contour diameter of the fixed ring. The end of the first liquid outlet pipe away from the connecting ring passes through the end cap body to the side of the end cap body facing the membrane housing cavity. A positioning ring is disposed on the side surface of the end cap body facing the membrane housing cavity, and the positioning ring is connected to the end cap body by a connecting post; The overall outer contour shape of the connecting ring and the fixed ring when they are coaxially connected is adapted to the internal space formed after the first clamp and the second clamp are closed.

7. The quick-release device for membrane housing end caps according to claim 6, characterized in that, A sealing ring is provided on the outer side of the end cap body.

8. The quick-release device for membrane housing end caps according to claim 1, characterized in that, The membrane housing body is provided with sealing rings at both ends. The end face of the sealing ring is parallel to the end face of the membrane housing body, and the inner diameter of the sealing ring smoothly transitions with the inner wall of the receiving cavity. The outer side of the membrane housing body is provided with a second liquid outlet pipe and a liquid inlet pipe. The second liquid outlet pipe and the liquid inlet pipe respectively penetrate the outer side of the membrane housing body, and their pipe opening positions correspond to the receiving cavity areas between the end cap bodies and the positioning rings at both ends of the membrane housing body.

9. The quick-release device for membrane housing end caps according to claim 1, characterized in that, Limiting blocks are provided on the outer surfaces of both ends of the central tube. The limiting blocks are annular and have reinforcing ribs arranged radially outward from their center. The limiting blocks are fixedly connected to the inner wall of the receiving cavity.

10. The quick-release device for membrane housing end caps according to claim 1, characterized in that, The central tube is provided with connectors at both ends, and the connectors have through water flow channels inside. The ends of the two sets of connectors away from the central tube are connected to the bottom of the first liquid outlet pipe of the membrane shell end caps on both sides through the water flow channels. One end of the connector is detachably connected to the central tube, and the other end is detachably connected to the first liquid outlet pipe.

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