Filter cartridge assembly and extractable ultrafiltration membrane water purifier

Abstract

The present application relates to water purification technical field, specifically, disclose filter core assembly and extractable ultrafiltration membrane water purification device. Filter core assembly includes installation part and filter part, filter part is used for filtering sewage and is arranged at installation part; Installation part includes fixed ring and fixed frame, fixed frame includes connecting sleeve and baffle; Any adjacent baffle and fixed ring corresponding inner wall form glue filling cavity, and both ends of glue filling cavity are provided with sector plate; Sector plate is provided with limit hole, and filter part includes hollow fiber; The middle part of one end of connecting sleeve is inwardly recessed to form a first glue injection groove, and a first glue injection hole is formed in the side wall of the connecting sleeve; The extractable ultrafiltration membrane water purification device includes a housing assembly, the housing assembly includes a first sleeve and a second sleeve that cooperates with the first sleeve; It can realize the function of inhibiting the shrinkage of colloid condensation by high-pressure glue injection, reduce the width of the gap between the colloid and the installation ring and the hollow fiber of the ultrafiltration membrane, and prolong the service life of the filter core.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and more specifically, to filter cartridge assemblies and removable ultrafiltration membrane water purification devices. Background Technology

[0002] Currently, household ultrafiltration membrane water purifiers consist of three parts: a filter cartridge, a filter element, and a sealing cap. The filter element is installed inside the sealing cap and includes an installation ring and hollow fibers for the ultrafiltration membrane. Wastewater enters the filter cartridge, is filtered by the hollow fibers of the ultrafiltration membrane, and then enters the sealing cap, from where it is discharged through the clean water outlet on the outer wall of the sealing cap. Wastewater inside the filter cartridge is discharged through the drain outlet on the outer wall of the filter cartridge.

[0003] During the production of filter cartridges, workers first bend the hollow fibers of the ultrafiltration membrane into a U-shape. Then, they pass the two ends of multiple hollow fibers through an installation ring and inject adhesive into the installation ring at normal pressure to fix the hollow fibers inside. Because injecting adhesive at normal pressure causes air bubbles to form inside the adhesive, after the adhesive solidifies, it shrinks, creating gaps between the adhesive and the inner wall of the installation ring and the outer wall of the hollow fibers of the ultrafiltration membrane. After the ultrafiltration membrane water purification device has been used for a long time, the gaps will gradually increase, eventually leading to water leakage from the filter cartridge and a decrease in filtration efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a filter cartridge assembly and a removable ultrafiltration membrane water purification device. It enables high-pressure injection of adhesive to suppress shrinkage during colloid coagulation, thereby reducing the width of the gap between the colloid, the mounting ring, and the hollow fibers of the ultrafiltration membrane, and extending the service life of the filter cartridge.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The filter element assembly includes an installation part and a filtration part. The filtration part is used to filter sewage and is located at the installation part. The installation part includes a fixing ring and a fixing frame located inside the fixing ring. The fixing frame includes a connecting sleeve for being coaxially arranged with the fixing ring and a plurality of baffles spaced apart along the circumference of the connecting sleeve. A glue-filling cavity for injecting glue is formed between any adjacent baffles and the corresponding inner wall of the fixing ring. A fan-shaped plate for closing the glue-filling cavity is provided at both ends of the glue-filling cavity. A limiting hole is provided at the fan-shaped plate. The filtration part includes hollow fibers for cooperating with the corresponding limiting hole. A first glue-injection groove is formed by an inward indentation in the middle of one end of the connecting sleeve. A first glue-injection hole for connecting the first glue-injection groove and the glue-filling cavity is provided on the side wall of the connecting sleeve.

[0007] By incorporating the fixing ring, connecting sleeve, baffle, glue injection cavity, sector plate, limiting hole, first glue injection groove, and first glue injection hole in this embodiment, the gap between the colloid and the inner wall of the glue injection cavity and the outer wall of the hollow fiber is reduced, thereby better preventing sewage from penetrating the filter element assembly and better extending the service life of the filter element assembly.

[0008] Preferably, the baffle includes two parallel first sub-baffles and second sub-baffles. The upper end of the first sub-baffle is provided with a first T-shaped block arranged along the length direction of the first sub-baffle. The end of the second sub-baffle away from the first T-shaped block is provided with a second T-shaped block arranged along the length direction of the second sub-baffle. A first limiting groove is formed between the first T-shaped block and the upper end surface of the first sub-baffle. A second limiting groove is formed between the second sub-baffle and the lower end surface of the second T-shaped block. Limiting plates extending into the first limiting groove and the second limiting groove are provided at both ends of the fan-shaped plate.

[0009] The arrangement of the first sub-baffle, the second sub-baffle, the first T-block, the second T-block, the first limiting groove, the second limiting groove, and the limiting plate in this invention makes it easier for workers to install the fan-shaped plate between adjacent baffles.

[0010] Preferably, the inner sidewall of the fixing ring is provided with a third limiting groove and a fourth limiting groove for the first sub-baffle and the second sub-baffle to extend into.

[0011] The third and fourth limiting grooves in this invention facilitate the installation of the first sub-baffle, the second sub-baffle, and the connecting sleeve into the fixing ring; at the same time, they also improve the overall sealing performance of the filter element assembly.

[0012] Preferably, a limiting block extending into the fourth limiting groove is provided on the outer wall of the sector plate away from the connecting sleeve.

[0013] The limiting block in this invention effectively prevents the fan-shaped plate from shaking, thus improving the structural stability of the filter assembly.

[0014] Preferably, one end face of the sector plate is provided with multiple arc-shaped plates perpendicular to the sector plate and extending into the injection cavity; the arc-shaped plates gradually increase in size from the connecting sleeve to the inner wall of the fixing ring; the limiting holes are located between two adjacent arc-shaped plates; the arc-shaped plates on the sector plates at the upper and lower ends of the injection cavity divide the injection cavity into multiple sub-injection cavities; the end of the first sub-baffle away from the first T-block is provided with multiple second injection holes communicating with the sub-injection cavities, and the second sub-baffle is provided with multiple third injection holes corresponding to the second injection holes; a fourth injection hole communicating with the inside of the connecting sleeve is provided between the first sub-baffle and the second sub-baffle.

[0015] The arc-shaped plate, sub-injection cavity, second injection hole, third injection hole and fourth injection hole in this invention make it easier for workers to separate the compact hollow fibers, so that the glue can completely adhere to the outer wall of the hollow fibers, thereby better preventing the hollow fibers from detaching from the glue.

[0016] Preferably, the inner wall of the fixing ring between the adjacent baffles is recessed to form a second glue injection groove, and the two ends of the second glue injection groove are respectively connected to the adjacent first limiting groove and second limiting groove; the first sub-baffle and the second sub-baffle are respectively provided with a fifth glue injection hole and a sixth glue injection hole connected to the second glue injection groove near the inner wall of the fixing ring.

[0017] By providing the second injection groove, the fifth injection hole, and the sixth injection hole in this invention, water is better prevented from entering the injection cavity from the inner wall of the fixing ring, thereby improving the sealing performance of the filter element assembly.

[0018] Preferably, the outer wall of the retaining ring is provided with external threads.

[0019] The external thread on the outer wall of the fixing ring in this invention makes it easier for workers to install the filter element assembly.

[0020] A removable ultrafiltration membrane water purification device includes a housing assembly, the housing assembly including a first sleeve for installing a filter cartridge assembly, and a second sleeve that cooperates with the first sleeve.

[0021] The filter element assembly and housing assembly in this invention provide a more convenient way to treat wastewater with this removable ultrafiltration membrane water purification device.

[0022] Preferably, the inner wall of the first sleeve is provided with an internal thread that mates with the external thread on the outer wall of the fixing ring; a clean water inlet is provided on the outer wall of the first sleeve, a water inlet is provided on the outer wall of the second sleeve, and a drain outlet is provided at the end of the second sleeve away from the first sleeve; a sealing cap is provided at the clean water inlet, the water inlet, and the drain outlet; a connecting piece for connecting the first sleeve and the second sleeve is provided on the outer wall of the second sleeve near the end of the first sleeve.

[0023] The arrangement of the first sleeve, second sleeve, clean water inlet, water inlet, and drain outlet in this invention makes it easier for users to clean hollow fibers.

[0024] Preferably, the connector includes a clamp disposed on the outer wall of the second sleeve.

[0025] The sleeve design in this invention makes it easier for users to install the first sleeve onto the second sleeve. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the housing assembly in Example 1.

[0027] Figure 2 This is a schematic diagram of the filter element assembly and the first sleeve in Example 1.

[0028] Figure 3 This is a schematic diagram of the second sleeve in Example 1.

[0029] Figure 4 This is a schematic diagram of the filter element assembly in Example 1.

[0030] Figure 5 This is a schematic diagram of the fixing ring in Example 1.

[0031] Figure 6 This is a schematic diagram of the baffle and connecting sleeve in Example 1.

[0032] Figure 7 This is a schematic diagram of the first limiting groove and the first T-shaped block in Embodiment 1.

[0033] Figure 8 This is a schematic diagram of the second limiting groove and the second T-block in Embodiment 1.

[0034] Figure 9 This is a schematic diagram of the sector plate and the arc plate in Example 1.

[0035] Figure 10 This is a cross-sectional view of the housing assembly and filter element assembly in Example 1.

[0036] Figure 11 This is a cross-sectional view of the filter element assembly in Example 1.

[0037] Figure 12 This is a schematic diagram of the glue injection cavity in Example 1. Detailed Implementation

[0038] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0039] Example 1

[0040] This embodiment provides a filter element assembly, which includes an installation part and a filtration part. The filtration part is used to filter sewage and is located at the installation part. The installation part includes a fixing ring 210 and a fixing frame located inside the fixing ring 210. The fixing frame includes a connecting sleeve 410 coaxially arranged with the fixing ring 210 and a plurality of baffles spaced apart circumferentially along the connecting sleeve 410. An injection cavity 1005 for injecting glue is formed between any adjacent baffle and the corresponding inner wall of the fixing ring 210. Both ends of the injection cavity 1005 are provided with fan-shaped plates 220 for closing the injection cavity 1005. A limiting hole 420 is provided at the fan-shaped plate 220. The filtration part includes hollow fibers 1002 for cooperating with the corresponding limiting hole 420. A first injection groove 680 is formed by an inward recess in the middle of one end of the connecting sleeve 410. A first injection hole 670 for connecting the first injection groove 680 and the injection cavity 1005 is provided on the side wall of the connecting sleeve 410.

[0041] With the arrangement of the fixing ring 210, connecting sleeve 410, baffle, glue injection cavity 1005, sector plate 220, limiting hole 420, first glue injection groove 680, and first glue injection hole 670 in this embodiment, the operator can pass both ends of the hollow fiber 1002 through the corresponding limiting hole 420 on the sector plate 220, and then inject glue into the first glue injection groove 680 on the connecting sleeve 410. The glue will enter the glue injection cavity 1005 through the first glue injection hole 670 and adhere to the inner wall of the glue injection cavity 1005 and the outer wall of the hollow fiber 1002. Because of the design of the injection chamber 1005, operators can inject adhesive into the connecting sleeve 410 using high-pressure injection. This reduces the number of air bubbles generated inside the adhesive in the injection chamber 1005. After the adhesive in the injection chamber 1005 solidifies, the high-pressure injection results in a higher density of adhesive, which inhibits the shrinkage of the adhesive during solidification. This reduces the gap between the adhesive and the inner wall of the injection chamber 1005 and the outer wall of the hollow fiber, thus better preventing sewage from penetrating the filter element assembly and extending the service life of the filter element assembly.

[0042] In this embodiment, the baffle includes two parallel first sub-baffles 610 and second sub-baffles 620. The upper end of the first sub-baffle 610 is provided with a first T-shaped block 720 arranged along the length direction of the first sub-baffle 610. The end of the second sub-baffle 620 away from the first T-shaped block 720 is provided with a second T-shaped block 820 arranged along the length direction of the second sub-baffle 620. A first limiting groove 710 is formed between the first T-shaped block 720 and the upper end face of the first sub-baffle 610. A second limiting groove 810 is formed between the second sub-baffle 620 and the lower end face of the second T-shaped block 820. Limiting plates 920 extending into the first limiting groove 710 and the second limiting groove 810 are provided at both ends of the sidewall of the fan-shaped plate 220.

[0043] With the arrangement of the first sub-baffle 610, the second sub-baffle 620, the first T-block 720, the second T-block 820, the first limiting groove 710, the second limiting groove 810, and the limiting plate 920 in this embodiment, when installing the filter element assembly, the operator first passes both ends of the hollow fiber 1002 through the limiting holes 420 on the sector plate 220, and then inserts the limiting plates 920 at both ends of the sector plate 220 into the first limiting groove 710 and the second limiting groove 810, thereby making it easier for the operator to install the sector plate 220 between adjacent baffles.

[0044] In this embodiment, the inner sidewall of the fixing ring 210 is provided with a third limiting groove 530 and a fourth limiting groove 520 for the first sub-baffle 610 and the second sub-baffle 620 to extend into.

[0045] With the third limiting groove 530 and the fourth limiting groove 520 in this embodiment, after the operator installs the fan-shaped plate 220, one end of the first sub-baffle 610 and the second sub-baffle 620 are respectively inserted into the third limiting groove 530 and the fourth limiting groove 520. The first sub-baffle 610 and the second sub-baffle 620 are interference-fitted with the third limiting groove 530 and the fourth limiting groove 520. When the operator injects high-pressure glue into the glue filling chamber 1005, the glue will fill the gap between the first sub-baffle 610 and the second sub-baffle 620 and the third limiting groove 530 and the fourth limiting groove 520, thereby facilitating the operator to install the first sub-baffle 610, the second sub-baffle 620 and the connecting sleeve 410 into the fixing ring 210, and also improving the overall sealing performance of the filter element assembly.

[0046] In this embodiment, a limiting block 930 extending into the fourth limiting groove 520 is provided on the outer wall of the sector plate 220 away from the connecting sleeve 410.

[0047] By setting the limiting block 930 in this embodiment, when the first sub-baffle 610, the second sub-baffle 620 and the connecting sleeve 410 are installed into the fixing ring 210, the limiting block 930 on the sector plate 220 will extend into the fourth limiting groove 520. The limiting block 930 and the fourth limiting groove 520 are interference-fitted, thereby better preventing the sector plate 220 from shaking and improving the structural stability of the filter element assembly.

[0048] In this embodiment, a plurality of arc-shaped plates 910 perpendicular to the fan-shaped plate 220 and extending into the glue injection cavity 1005 are provided on one end face of the fan-shaped plate 220; the arc-shaped plates 910 gradually increase in size from the connecting sleeve 410 to the inner side wall of the fixing ring 210; the limiting holes 420 are respectively located between two adjacent arc-shaped plates 910; the arc-shaped plates 910 on the fan-shaped plates 220 at the upper and lower ends of the glue injection cavity 1005 divide the glue injection cavity 1005 into a plurality of sub-glue injection cavities 1101; the first sub-baffle 610 is provided with a plurality of second glue injection holes 650 communicating with the sub-glue injection cavities 1101 at one end away from the first T-shaped block 720, and the second sub-baffle 620 is provided with a plurality of third glue injection holes 640 corresponding to the second glue injection holes 650; a fourth glue injection hole 1102 communicating with the inside of the connecting sleeve 410 is provided between the first sub-baffle 610 and the second sub-baffle 620.

[0049] The arrangement of the arc-shaped plate 910, sub-injection cavity 1101, second injection hole 650, third injection hole 640, and fourth injection hole 1102 in this embodiment ensures that when the operator injects high-pressure adhesive into the connecting sleeve 410, the adhesive will enter the sub-injection cavity 1101 from the first injection hole 670, enter the space between the first sub-baffle 610 and the second sub-baffle 620 from the fourth injection hole 1102, and then enter the second injection hole 650 and the third injection hole 640 from the space between the first sub-baffle 610 and the second sub-baffle 620. The second injection hole 650 and the third injection hole 640 respectively enter different sub-injection cavities 1101. Since the limiting hole 420 is located between two adjacent arc plates 910, the hollow fiber 1002 is separated in different sub-injection cavities 1101, so that the glue can completely adhere to the outer wall of the hollow fiber 1002. This makes it easier for the staff to separate the compact hollow fiber 1002 and ensure that the glue completely adheres to the outer wall of the hollow fiber 1002, thereby better preventing the hollow fiber 1002 from detaching from the glue.

[0050] In this embodiment, the inner wall of the fixing ring 210 between adjacent baffles is recessed to form a second glue injection groove 510. The two ends of the second glue injection groove 510 are respectively connected to the adjacent first limiting groove 710 and second limiting groove 810. The first sub-baffle 610 and the second sub-baffle 620 are respectively provided with a fifth glue injection hole 660 and a sixth glue injection hole 630 that are connected to the second glue injection groove 510 near the inner wall of the fixing ring 210.

[0051] By configuring the second glue injection groove 510, the fifth glue injection hole 660, and the sixth glue injection hole 630 in this embodiment, when the operator injects glue into the connecting sleeve 410 under high pressure, the glue enters between the first sub-baffle 610 and the second sub-baffle 620 through the fourth glue injection hole 1102, then flows from between the first sub-baffle 610 and the second sub-baffle 620 into the fifth glue injection hole 660 and the sixth glue injection hole 630, and then enters the second glue injection groove 510 through the fifth glue injection hole 660 and the sixth glue injection hole 630. This effectively prevents water from entering the glue injection cavity 1005 from the inner side wall of the fixing ring 210, thus improving the sealing performance of the filter element assembly.

[0052] In this embodiment, the outer wall of the fixing ring 210 is provided with external threads.

[0053] The external thread on the outer wall of the fixing ring 210 in this embodiment allows the operator to rotate the fixing ring 210 into the first sleeve 130, thus making it easier for the operator to install the filter element assembly.

[0054] Example 2

[0055] This embodiment provides a removable ultrafiltration membrane water purification device, including a housing assembly. The housing assembly includes a first sleeve 130 for installing a filter cartridge assembly and a second sleeve 110 that cooperates with the first sleeve 130.

[0056] The filter element assembly and housing assembly in this embodiment are configured such that the housing assembly is used to collect sewage, and the filter element assembly is used to treat the sewage collected in the housing assembly. The cooperation between the filter element assembly and the housing assembly makes it easier for the extractable ultrafiltration membrane water purification device to treat sewage.

[0057] In this embodiment, the inner wall of the first sleeve 130 is provided with an internal thread that mates with the external thread on the outer wall of the fixing ring 210; a clean water inlet 1001 is provided on the outer wall of the first sleeve 130, a water inlet 1003 is provided on the outer wall of the second sleeve 110, and a drain outlet 1004 is provided at the end of the second sleeve 110 away from the first sleeve 130. A sealing cap 120 is provided at the clean water inlet 1001, the water inlet 1003, and the drain outlet 1004; a connecting member for connecting the first sleeve 130 and the second sleeve 110 is provided on the outer wall of the second sleeve 110 near the end of the first sleeve 130.

[0058] The arrangement of the first sleeve 130, the second sleeve 110, the clean water inlet 1001, the water inlet 1003, and the sewage outlet 1004 in this embodiment allows the user to pour sewage into the second sleeve 110 through the water inlet 1003. The sewage is filtered through the hollow fiber 1002, and the filtered sewage flows into the first sleeve 130 and then flows out through the clean water inlet 1001. The residue after the sewage filtration is discharged from the sewage outlet 1004. Afterward, the user can pull out the filter element assembly and the hollow fiber 1002 from the second sleeve 110 for cleaning, which makes it more convenient for the user to clean the hollow fiber 1002.

[0059] In this embodiment, the connector includes a clamp 140 disposed on the outer wall of the second sleeve 110.

[0060] With the sleeve 140 provided in this embodiment, the user can connect the first sleeve 130 to the opening of the first sleeve 130 through the sleeve 140, which makes it easier for the user to install the first sleeve 130 on the second sleeve 110.

[0061] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A filter element assembly, characterized in that: The system includes an installation section and a filtration section. The filtration section is used to filter wastewater and is located at the installation section. The installation section includes a fixing ring (210) and a fixing frame located inside the fixing ring (210). The fixing frame includes a connecting sleeve (410) coaxially arranged with the fixing ring (210) and multiple baffles spaced apart circumferentially along the connecting sleeve (410). Each adjacent baffle forms a glue-filling cavity (1005) between itself and the corresponding inner wall of the fixing ring (210) for injecting glue. The glue-filling cavity (1005) has two... Each end is provided with a fan-shaped plate (220) for sealing the glue filling cavity (1005); the fan-shaped plate (220) is provided with a limiting hole (420); the filter part includes a hollow fiber (1002) for cooperating with the corresponding limiting hole (420); the middle of one end of the connecting sleeve (410) is recessed inward to form a first glue injection groove (680); the side wall of the connecting sleeve (410) is provided with a first glue injection hole (670) for connecting the first glue injection groove (680) and the glue filling cavity (1005); The baffle includes two parallel first sub-baffles (610) and second sub-baffles (620). The upper end of the first sub-baffle (610) is provided with a first T-shaped block (720) arranged along the length of the first sub-baffle (610). The end of the second sub-baffle (620) away from the first T-shaped block (720) is provided with a second T-shaped block (820) arranged along the length of the second sub-baffle (620). A first limiting groove (710) is formed between the first T-shaped block (720) and the upper end face of the first sub-baffle (610). A second limiting groove (810) is formed between the second sub-baffle (620) and the lower end face of the second T-shaped block (820). Limiting plates (920) extending into the first limiting groove (710) and the second limiting groove (810) are provided at both ends of the fan-shaped plate (220). The sector plate (220) has multiple arc-shaped plates (910) perpendicular to it and extending into the glue-filling cavity (1005) on one end face; the arc-shaped plates (910) gradually increase in size from the connecting sleeve (410) to the inner wall of the fixing ring (210); the limiting holes (420) are located between two adjacent arc-shaped plates (910); the arc-shaped plates (910) on the sector plates (220) at the upper and lower ends of the glue-filling cavity (1005) divide the glue-filling cavity (1005). Multiple sub-filling cavities (1101) are formed; the first sub-baffle (610) is provided with multiple second glue injection holes (650) communicating with the sub-filling cavities (1101) at one end away from the first T-shaped block (720); the second sub-baffle (620) is provided with multiple third glue injection holes (640) corresponding to the second glue injection holes (650); a fourth glue injection hole (1102) communicating with the inside of the connecting sleeve (410) is provided between the first sub-baffle (610) and the second sub-baffle (620); The fixing ring (210) is located between adjacent baffles. The inner wall of the fixing ring (210) is recessed to form a second glue injection groove (510). The two ends of the second glue injection groove (510) are respectively connected to the adjacent first limiting groove (710) and second limiting groove (810). The first sub-baffle (610) and the second sub-baffle (620) are respectively provided with a fifth glue injection hole (660) and a sixth glue injection hole (630) connected to the second glue injection groove (510) near the inner wall of the fixing ring (210).

2. The filter element assembly according to claim 1, characterized in that: The inner wall of the fixing ring (210) is provided with a third limiting groove (530) and a fourth limiting groove (520) for the first sub-baffle (610) and the second sub-baffle (620) to extend into.

3. The filter element assembly according to claim 2, characterized in that: A limiting block (930) extending into the fourth limiting groove (520) is provided on the outer wall of the sector plate (220) away from the connecting sleeve (410).

4. The filter element assembly according to claim 1, characterized in that: The outer wall of the retaining ring (210) is provided with external threads.

5. A removable ultrafiltration membrane water purification device, comprising a housing assembly, the housing assembly including a first sleeve (130) for installing the filter element assembly of any one of claims 1-4, and a second sleeve (110) cooperating with the first sleeve (130).

6. The extractable ultrafiltration membrane water purification device according to claim 5, characterized in that: The inner wall of the first sleeve (130) is provided with an internal thread that mates with the external thread on the outer wall of the fixing ring (210); a clean water inlet (1001) is provided on the outer wall of the first sleeve (130), a water inlet (1003) is provided on the outer wall of the second sleeve (110), a drain outlet (1004) is provided at the end of the second sleeve (110) away from the first sleeve (130), and a sealing cap (120) is provided at the clean water inlet (1001), the water inlet (1003) and the drain outlet (1004); a connecting piece for connecting the first sleeve (130) and the second sleeve (110) is provided on the outer wall of the second sleeve (110) near the end of the first sleeve (130).

7. The extractable ultrafiltration membrane water purification device according to claim 6, characterized in that: The connector includes a clamp (140) disposed on the outer wall of the second sleeve (110).

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