A household RO membrane quick-install membrane shell and RO membrane element

Abstract

The present application relates to a household RO membrane quick-install membrane shell and RO membrane element, and relates to the field of filtration and purification components. The household RO membrane quick-install membrane shell includes a shell, an end cover, a slip ring and a traction assembly. One end of the shell has an opening, and a first annular connecting sleeve is integrally formed at the outer diameter of the end cover. One end of the first connecting sleeve is integrally formed with a spring piece inclined outwardly arranged. The slip ring is axially slidingly matched with the shell. A second connecting sleeve is fixed to the inner wall of the open end of the shell. The outer peripheral surface of the second connecting sleeve is set as a first matching surface, and the diameter of the first matching surface gradually decreases in the direction away from the closed end of the shell; the inner peripheral surface of the slip ring has a second matching surface and a guide surface, and the diameter of the second matching surface gradually decreases in the direction away from the closed end of the shell. The traction assembly is used to force the slip ring to move axially in the direction toward the closed end of the shell, and the second matching surface clamps the spring piece on the first matching surface. The present application can improve the efficiency of disassembly and assembly of the shell and the end cover, and the installation is relatively stable.

Description

Technical Field

[0001] The present application relates to the field of filtration and purification components, and in particular to a household RO membrane quick-install membrane shell and an RO membrane element. Background Art

[0002] RO membrane is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membrane, and is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate these substances and water under the action of higher osmotic pressure than the solution, based on the fact that other substances cannot pass through the semipermeable membrane.

[0003] The RO membrane element includes a shell, an end cover and an RO membrane core located inside the shell. The shell and the end cover are matched by threads. To tighten them, you need to tighten them several times by hand. It takes a long time to disassemble and assemble the end cover, and there is a pre-tightening force when tightening them before to ensure the stability of the installation. Therefore, when loosening them, you need to overcome a large friction pre-tightening force, which is more laborious and even requires the use of tools to loosen them, which is more cumbersome.

[0004] During the production and preparation process, in order to more accurately reflect the data of the rolled RO membrane core, the RO membrane core needs to be tested repeatedly during the rolling and film formation testing process. However, when a large number of RO membrane cores are tested, such as testing hundreds of membrane cores, it is time-consuming, labor-intensive and cumbersome. Summary of the invention

[0005] In order to improve the efficiency of disassembly and assembly, the present application provides a household RO membrane quick-assembly membrane shell and RO membrane element.

[0006] The present application provides a household RO membrane quick-install membrane shell, which adopts the following technical solution:

[0007] A household RO membrane quick-install membrane shell comprises a circular shell, an end cover, a slip ring and a traction assembly, wherein one end of the shell has an opening, and the other end of the shell is closed, the closed end of the shell has a first water outlet and a second water outlet, and the end cover has a water inlet; an annular first connecting sleeve is integrally formed at the outer diameter of the end cover, and one end of the first connecting sleeve is integrally formed with a spring sheet arranged obliquely outward, and each spring sheet is evenly arranged along the circumference of the first connecting sleeve, the slip ring is axially slidably matched with the shell, a second connecting sleeve is fixed to the inner wall of the open end of the shell, and the outer peripheral surface of the second connecting sleeve is set as a first matching surface, and the diameter of the first matching surface gradually decreases in the direction away from the closed end of the shell; the inner peripheral surface of the slip ring has a second matching surface and a guide surface, the diameter of the second matching surface gradually decreases in the direction away from the closed end of the shell, and the diameter of the guide surface gradually increases in the direction away from the closed end of the shell; the traction assembly is used to force the slip ring to move axially in the direction toward the closed end of the shell, and the second matching surface clamps the spring sheet to the first matching surface.

[0008] By adopting the above technical solution, during installation, first ensure that there is a large axial gap between the second mating surface of the slip ring and the first mating surface of the second connecting sleeve, then move the end cover toward the shell, the end of the spring sheet of the end cover touches the guide surface first, and continue to move the end cover. Under the guidance of the guide surface, the spring sheet of the end cover elastically deflects, so that each spring sheet elastically contracts, and the diameter of the virtual circle formed by each spring sheet decreases. Continue to move the end cover, the spring sheet detaches from the guide surface, the spring sheet restores its deformation, and ensures that the spring sheet fits the first mating surface, stop moving the end cover, and finally use the traction assembly to force the slip ring to move axially toward the closed end of the shell, the second mating surface clamps the spring sheet to the first mating surface, and then completes the fixed installation of the shell, the second connecting sleeve, the spring sheet, the first connecting sleeve and the end cover.

[0009] During disassembly, the limit of the traction assembly is released, and the slip ring is moved axially away from the closed end of the shell to ensure that there is a large axial gap between the second mating surface of the slip ring and the first mating surface of the second connecting sleeve. At this time, the spring piece is not pressed by the second mating surface, and the spring piece has sufficient deformation space to move the end cover away from the shell. The end of the spring piece touches the second mating surface. Under the guidance of the second mating surface, the spring piece elastically deflects, so that each spring piece elastically contracts, and the diameter of the virtual circle formed by each spring piece decreases. The end cover continues to be moved, the spring piece detaches from the second connecting sleeve, and the spring piece recovers its deformation, thereby completing the disassembly of the end cover.

[0010] In this way, by providing the housing, the second connecting sleeve, the spring sheet, the first connecting sleeve, the end cover and the traction assembly, during installation, by providing the guide surface, each spring sheet is elastically contracted, which is convenient for the spring sheet to fit with the first matching surface, and then cooperates with the pressing of the second matching surface, so as to quickly complete the installation of the end cover, and at the same time, the stability is strong. During disassembly, by moving the slip ring, there is a large axial gap between the second matching surface of the slip ring and the first matching surface of the second connecting sleeve, so that the spring sheet has enough deformation space, so that each spring sheet is elastically contracted and separated from the second connecting sleeve, that is, the disassembly is quickly completed.

[0011] Optionally, the first mating surface, the second mating surface and the guide surface are all conical surfaces, the traction assembly includes a fishing line and a limiting structure, the outer circumferential surface of the slip ring is fixed with a plurality of first ring bodies arranged evenly circumferentially, the outer circumferential surface of the shell is fixed with a plurality of second ring bodies arranged evenly circumferentially, the first ring bodies and the second ring bodies are staggered along their own arrangement direction, the fishing line passes through the first ring bodies and the second ring bodies in turn, so that the fishing line is arranged in a wavy shape; the limiting structure is installed on the outer circumferential surface of the shell, and the limiting structure is used to fix the relative positions of the two ends of the fishing line; when the fishing line is tightened, the slip ring moves axially toward the closed end of the shell, and the second mating surface clamps the spring sheet to the first mating surface.

[0012] By adopting the above technical solution, by setting the fish wire, the end of the fish wire is stretched, the fish wire is tightened, and the fish wire cooperates with the first ring body and the second ring body to pull the slip ring, so that the slip ring is more evenly stressed, so that the slip ring moves axially toward the closed end of the shell, and the second mating surface clamps the spring piece on the first mating surface, thereby clamping and fixing the spring piece. In addition, the fish wire is elastic, and the elastic force of the fish wire will be transmitted to the slip ring, so that the second mating surface continues to clamp the spring piece, and the installation is more stable.

[0013] Optionally, a plurality of limiting balls are fixed at both ends of the fishing line, and the limiting balls are equidistantly arranged along the length direction of the fishing line; the limiting structure comprises a square limiting tube, a rocker rod and a rotating rod, the limiting tube is fixed to the outer peripheral surface of the shell, both ends of the fishing line pass through the limiting tube, and the two ends of the fishing line are arranged side by side along the radial direction of the limiting tube; an avoidance hole is provided in the middle of the limiting tube, one end of the rotating rod is connected to the limiting tube for damping rotation, the rotating rod is perpendicular to the axis of the limiting tube, the other end of the rotating rod is fixed to the middle of the rocker rod, the rocker rod is perpendicular to the rotating rod, the rocker rod is located in the avoidance hole, and blocks are fixed at both ends of the rocker rod, the block is used to block the limiting ball from moving axially along the limiting tube, the hole wall of the avoidance hole is provided with a bayonet, and the elastic force of the fishing line is applied to the block through the limiting ball to force the block to rest against the bayonet.

[0014] By adopting the above technical solution, the end of the fishing line is stretched so that after the fishing line is tightened, the rotating rod is rotated so that the stopper blocks the axial movement of the limiting ball, and the elastic force of the fishing line is applied to the stopper through the limiting ball to force the stopper to rest against the bayonet, that is, the limiting ball, the stopper and the limiting tube constrain each other, and the fixing effect is better.

[0015] When it is necessary to release the limit on the fishing line in order to relax the fishing line, the rotating rod is rotated, and the rocker arm drives the block to move in the direction away from the bayonet. The block does not block the limiting ball, so that the fishing line can move axially smoothly in the limiting tube, so as to relax the fishing line. In addition, since the rotating rod is damped, the angle of the rotating rod is relatively stable.

[0016] Optionally, the first mating surface, the second mating surface and the guide surface are all conical surfaces, a hook portion is integrally formed at the end of the spring sheet, a bending groove is provided between the hook portion and the spring sheet, an adapting surface for the inner arc surface of the hook portion to fit is provided between the second mating surface and the inner wall of the slip ring, and a shaping block abutting against the outer arc surface of the hook portion is fixed between the first mating surface and the inner circumferential surface of the shell; when the second mating surface clamps the spring sheet to the first mating surface, the shaping block abuts against the outer arc surface of the hook portion to force the hook portion to elastically bend and deform in a direction away from the closed end of the shell, and the inner arc surface of the hook portion fits against the adapting surface.

[0017] By adopting the above technical solution, under normal conditions, the hook portion is not subjected to external pressure, and the angle between the hook portion and the spring sheet is small. When the second mating surface clamps the spring sheet to the first mating surface, the shaping block abuts against the outer arc surface of the hook portion to force the hook portion to bend elastically in a direction away from the closed end of the shell, and the inner arc surface of the hook portion fits the matching surface. At this time, the angle between the hook portion and the spring sheet is large, making it more difficult for the spring sheet to escape from the clamping between the first mating surface and the second mating surface, that is, the installation stability of the end cover is stronger.

[0018] When disassembly is required, the second mating surface is away from the first mating surface, the hook portion is not subjected to pressure from the adapter surface, the hook portion recovers its deformation, and the angle between the hook portion and the spring sheet is smaller, making it easier for the spring sheet to elastically contract under the guidance of the second mating surface, making it easier to disassemble.

[0019] Optionally, the busbars of the first mating surface and the second mating surface are both wavy, so that the first mating surface and the second mating surface both have wavy protrusions; the spring sheet is wavy; when the first mating surface and the second mating surface clamp the spring sheet, the wavy protrusions of the first mating surface and the second mating surface respectively engage with the spring sheet.

[0020] By adopting the above technical solution and providing a wavy spring sheet, the spring sheet is easier to bend elastically, that is, under the guidance of the guide surface and the second matching surface, the spring sheet is easier to bend elastically, that is, the force required to push the end cover is smaller, and disassembly and assembly is more labor-saving.

[0021] Secondly, by having the wavy protrusions on the first mating surface and the second mating surface respectively engage with the spring sheet, the clamping area can be increased, thereby improving the installation stability. In addition, the easy-to-bend nature of the wavy spring sheet allows the spring sheet to fit better, and the gap between the spring sheet and the wavy protrusion is smaller, further improving the installation stability.

[0022] Optionally, the slip ring is divided into an annular sliding portion, a first cone ring portion and a second cone ring portion in sequence along its own axial direction, the inner circumferential surface of the first cone ring portion is the second mating surface, the inner circumferential surface of the second cone ring portion is the guide surface, the sliding portion and the opposite end surface of the second cone ring portion are fixedly connected by a plurality of circumferentially evenly arranged connecting sheets, the first cone ring portion passes through a sliding hole provided with a corresponding connecting sheet, the connecting sheet passes through the sliding hole, the hole width of the sliding hole is greater than the width of the connecting sheet, and the first cone ring portion is circumferentially slidably matched with the sliding portion; the first mating surface is provided with a plurality of positioning grooves, the positioning grooves extend along the generatrix direction of the first mating surface, and the positioning grooves have two inclined The inclined groove wall, the spring piece is located in the positioning groove, and the opposite side edges of the spring piece are respectively abutted against the two inclined groove walls; the surface of the spring piece has a first guide surface, and the second matching surface is protrudingly structured with a plurality of convex strips, the convex strips extend along the generatrix direction of the second matching surface, and the convex strips have a second guide surface; the first ring body is fixed to the outer peripheral surface of the second cone ring part, and the outer peripheral surface of the first cone ring part is fixed with a third ring body for the fishing line to pass through; when the fishing line is tightened, the slip ring moves axially toward the closed end of the shell body and the fishing line drives the first cone ring part to deflect positively through the third ring body, and the second guide surface of the convex strip is in contact with the first guide surface of the spring piece to embed the spring piece into the positioning groove.

[0023] By adopting the above technical scheme, during installation, the end cover is in place, the spring sheet corresponds to the positioning groove one by one, the spring sheet is located in the positioning groove, the inclined groove wall of the positioning groove is used to limit the circumferential sliding of the spring sheet, the traction assembly drives the fish line to tighten, the slip ring moves axially in the direction toward the closed end of the shell, and in the process of tightening the fish line, the inclination angle of the part of the fish line located between the first ring body and the second ring body changes, and the change of the inclination angle will be transmitted to the first cone ring part through the third ring body, thereby driving the first cone ring part to deflect positively, that is, in the process of the convex strip pressing toward the spring sheet in the axial direction, the first cone ring part and the convex strip deflect circumferentially in the positive direction, not only making the second guide surface of the convex strip fit the first guide surface of the spring sheet to further embed the spring sheet into the positioning groove, but also the convex strip applies axial pressure to the spring sheet, that is, under the double pressure, the matching stability of the spring sheet and the positioning groove is stronger, thereby improving the installation stability of the end cover.

[0024] Optionally, the slip ring is divided into an annular sliding portion, a first conical ring portion and a second conical ring portion in sequence along its own axial direction, the inner circumferential surface of the first conical ring portion is the second mating surface, the inner circumferential surface of the second conical ring portion is the guide surface, the sliding portion and the opposite end surface of the second conical ring portion are fixedly connected by a plurality of circumferentially evenly arranged connecting sheets, the first conical ring portion passes through sliding holes provided with corresponding connecting sheets, the connecting sheets pass through the sliding holes, the hole width of the sliding holes is greater than the width of the connecting sheets, and the first conical ring portion is circumferentially slidably matched with the sliding portion; the inner circumferential surfaces of the first connecting sleeve and the second connecting sleeve are coaxially fixed with pressure rings, a second sealing ring is clamped between the two pressure rings, and the cross-sectional shape of the second sealing ring is an isosceles triangle A plurality of extension strips are integrally formed at the outer diameter of the second sealing ring, the extension strips pass through the gap between two adjacent spring sheets and are located at the inner circumference of the first cone ring portion, the ends of each extension strip away from the second sealing ring are commonly connected to a rubber ring, the cross-section of the rubber ring is L-shaped, a plurality of first right-angled triangular teeth are fixed to the inner circumference of the rubber ring, a plurality of second right-angled triangular teeth are fixed to the end face of the first cone ring portion, the inclined surfaces of the second right-angled triangular teeth are fitted with the inclined surfaces of the first right-angled triangular teeth; when the fishing line is tightened, the slip ring moves axially in the direction toward the closed end of the shell and the fishing line drives the first cone ring portion to deflect positively through the third ring body, and the positively deflected first cone ring portion forces the second sealing ring to expand elastically through the cooperation of the second right-angled triangular teeth and the first right-angled triangular teeth.

[0025] By adopting the above technical solution, during installation, the second sealing ring is placed on the pressure ring surface of the second connecting sleeve, the extension strip is fitted to the first matching surface, the rubber ring is located at the outer diameter of the first matching surface, the end cover is in place, and the spring piece is located in the circumferential gap between the two adjacent extension strips; the traction component drives the fish wire to tighten, and the slip ring moves axially toward the closed end of the shell body, and during the tightening of the fish wire, the inclination angle of the part of the fish wire located between the first ring body and the second ring body changes, and the change in the inclination angle will be transmitted to the first cone ring part through the third ring body, thereby driving the first cone ring part to deflect positively, that is, In the process of the second mating surface pressing against the spring sheet in the axial direction, the first conical ring portion deflects in the positive circumferential direction. Since the spring sheet limits the circumferential sliding of the extension strip and the rubber ring, that is, the first right-angled triangular tooth has no circumferential sliding, the inclined surface of the circumferentially deflected second right-angled triangular tooth presses against the inclined surface of the first right-angled triangular tooth, so as to force the rubber ring to expand elastically, so as to drive the extension strip to eject and stretch, thereby driving the second sealing ring to expand elastically, so that the second sealing ring is more evenly attached to the surface of the pressure ring, reducing the fitting gap, and finally cooperating with the pressing of the pressure ring of the first connecting sleeve, thereby improving the sealing strength and sealing effect of the second sealing ring.

[0026] Optionally, compression rings are coaxially fixed to the inner circumferences of the first connecting sleeve and the second connecting sleeve, and a first sealing ring is clamped between the two compression rings.

[0027] By adopting the above technical solution, the traction assembly drives the first connecting sleeve to move axially toward the second connecting sleeve, so that the pressure ring clamps the first sealing ring more tightly, thereby effectively improving the sealing effect.

[0028] Optionally, a port of the slip ring is integrally formed with a plurality of axially extending slide bars, the slide bars are evenly arranged along the circumference of the shell, and an outer circumferential surface of the shell is provided with a slide groove that slidably cooperates with the slide bars.

[0029] By adopting the above technical solution, the axial sliding fit between the slip ring and the housing is achieved through the cooperation between the slide bar and the slide groove, and the circumferential movement of the slip ring relative to the housing can be prevented.

[0030] The present application provides an RO membrane element, which adopts the following technical solution:

[0031] A RO membrane element comprises a RO membrane core and a household RO membrane quick-install membrane shell.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] By setting a shell, a second connecting sleeve, a spring sheet, a first connecting sleeve, an end cover and a traction assembly, during installation, by setting a guide surface, each spring sheet is elastically contracted, which is convenient for the spring sheet to fit with the first matching surface, and then cooperates with the pressing of the second matching surface, so that the installation of the end cover is completed quickly, and the stability is strong. During disassembly, by moving the slip ring, a large axial gap is provided between the second matching surface of the slip ring and the first matching surface of the second connecting sleeve, so that the spring sheet has sufficient deformation space, so that each spring sheet can be elastically contracted and separated from the second connecting sleeve, that is, the disassembly is completed quickly; by setting a fish wire, by stretching the end of the fish wire, the fish wire is tightened, and the fish wire cooperates with the first ring body and the second ring body to pull the slip ring, so that the slip ring is more evenly stressed, so that the slip ring moves axially in the direction toward the closed end of the shell, and the second matching surface clamps the spring sheet on the first matching surface, thereby achieving the clamping and fixing of the spring sheet. In addition, the fish wire is elastic, and the elastic force of the fish wire will be transmitted to the slip ring, so that the second matching surface continues to maintain the state of clamping the spring sheet, and the installation is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a cross-sectional view of the overall structure of Example 1.

[0035] Figure 2 It is a cross-sectional view of the end cover of Example 1.

[0036] Figure 3 Schematic diagram of the end cap of Example 1.

[0037] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0038] Figure 5 It is a schematic diagram of Example 1 for showing the matching relationship between the fishing line and the first ring body and the second ring body respectively.

[0039] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0040] Figure 7 It is a schematic diagram of Example 1 for demonstrating the state in which the blocking block releases the blocking of the limiting ball.

[0041] Figure 8 It is a schematic diagram of the shrapnel of Example 2.

[0042] Fig. 9 It is a schematic diagram of Example 2 for showing the matching relationship between the slip ring and the second connecting sleeve in the installed state.

[0043] Fig.10 It is a schematic diagram of Example 3 for showing the matching relationship between the slip ring and the second connecting sleeve in the installed state.

[0044] Fig.11 It is a schematic diagram of Example 4 for showing the matching relationship between the slip ring and the second connecting sleeve in the installed state.

[0045] Fig.12 yes Fig.11 Cross-sectional view along CC direction.

[0046] Fig.13 yes Fig.11 Cross-sectional view along the DD direction.

[0047] Fig.14 It is a schematic diagram of the state change of the circumferential position of the first cone ring portion during the process of tightening the fishing line in Example 4.

[0048] Fig.15 It is a schematic diagram of Example 5 for showing the matching relationship between the slip ring and the second connecting sleeve in the installed state.

[0049] Fig.16 Schematic diagram of the second sealing ring of Example 5.

[0050] Fig.17 yes Fig.15 Cross-sectional view along the EE direction.

[0051] Fig.18 yes Fig.16 A partial enlarged view of point F in the middle.

[0052] Fig.19 yes Fig.15 Cross-sectional view along the GG direction.

[0053] Description of the accompanying drawings: 1. Slip ring; 2. End cover; 3. Second connecting sleeve; 10. Shell; 101. First water outlet; 102. Second water outlet; 103. Slide groove; 104. Second ring body; 11. Slide bar; 12. Second matching surface; 121. Matching surface; 122. Raised strip; 123. Second guide surface; 13. Guide surface; 14. First ring body; 15. Sliding portion; 151. Connecting piece; 16. First cone ring portion; 161. Slide hole; 162. Second right-angle triangular tooth; 17. Second cone ring portion; 18. Third ring body; 20. RO membrane core; 201. Middle Core tube; 21, water inlet hole; 22, first connecting sleeve; 23, spring piece; 231, hook portion; 232, easy-bending groove; 233, first guide surface; 31, first matching surface; 311, shaping block; 312, positioning groove; 32, pressure ring; 33, first sealing ring; 35, second sealing ring; 351, extension strip; 352, rubber ring; 353, first right-angle triangular tooth; 51, fishing line; 511, limiting ball; 52, limiting structure; 521, limiting tube; 522, rotating rod; 523, swing rod; 524, stopper; 525, avoidance hole; 526, bayonet. DETAILED DESCRIPTION

[0054] The following is combined with Figure 1 -Attached Fig.19 This application is described in further detail.

[0055] Example 1, Example 1 discloses an RO membrane element, such as Figure 1 As shown, the RO membrane element includes an RO membrane core 20 and a household RO membrane quick-install membrane shell, wherein the household RO membrane quick-install membrane shell includes a circular shell 10, an end cover 2 and a slip ring 1, one end of the shell 10 has an opening, and the other end of the shell 10 is closed, and the closed end of the shell 10 has a first water outlet 101 and a second water outlet 102, one end of the central tube 201 of the RO membrane core 20 is fixed to the closed end of the shell 10, and the central tube 201 is connected to the first water outlet 101, and the other end of the central tube 201 of the RO membrane core 20 is closed, the end cover 2 is installed at the open end of the shell 10, and the end cover 2 has a water inlet 21, raw water enters the shell 10 through the water inlet 21, the raw water is filtered and purified by the RO membrane core 20 into clean water, the clean water is discharged through the central tube 201 and the first water outlet 101 in turn, and the high-concentration wastewater that has not been filtered is discharged through the second water outlet 102.

[0056] like Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the end cover 2 is made of plastic, and an annular first connecting sleeve 22 is integrally formed at the outer diameter of one port of the end cover 2. An end of the first connecting sleeve 22 away from the end cover 2 is integrally formed with a spring piece 23 inclined outwardly arranged. There are multiple spring pieces 23, and each spring piece 23 is evenly arranged along the circumference of the first connecting sleeve 22; one port of the slip ring 1 is integrally formed with multiple axially extending slide bars 11, and each slide bar 11 is evenly arranged along the circumference of the shell 10. The outer peripheral surface of the shell 10 is provided with a slide groove 103 that slides with the slide bar 11, so that the slip ring 1 can slide axially relative to the shell 10, and the slide groove 103 also limits the circumferential movement of the slip ring 1.

[0057] The inner circumference of the slip ring 1 has a second mating surface 12 and a guide surface 13. Both the second mating surface 12 and the guide surface 13 are conical surfaces. The diameter of the second mating surface 12 gradually decreases away from the closed end of the shell 10, and the diameter of the guide surface 13 gradually increases away from the closed end of the shell 10.

[0058] A second connecting sleeve 3 is fixed to the inner wall of the open end of the shell 10 . The outer peripheral surface of the second connecting sleeve 3 is set as a first matching surface 31 . The first matching surface 31 is a conical surface. The diameter of the first matching surface 31 gradually decreases in the direction away from the closed end of the shell 10 .

[0059] like Figure 4 As shown, a pressure ring 32 is coaxially fixed to the inner circumference of the first connecting sleeve 22 and the second connecting sleeve 3 , and a first sealing ring 33 is clamped between the two pressure rings 32 .

[0060] The traction assembly is used to force the slip ring 1 to move axially toward the closed end of the housing 10, specifically, as Figure 5 , Figure 6 , Figure 7 As shown, the traction assembly includes a fish wire 51 and a limiting structure 52, a plurality of first ring bodies 14 evenly arranged in a circumference are fixed to the outer circumference of the slip ring 1, a plurality of second ring bodies 104 evenly arranged in a circumference are fixed to the outer circumference of the shell 10, the first ring bodies 14 and the second ring bodies 104 are staggered along their own arrangement direction, the fish wire 51 passes through the first ring bodies 14 and the second ring bodies 104 in sequence, so that the fish wire 51 is arranged in a wavy shape, it can be understood that when the two ends of the fish wire 51 are pulled at the same time, the two ends are moved toward each other, that is, the fish wire 51 can be tightened, the fish wire 51 cooperates with the first ring body 14 and the second ring body 104 to pull the slip ring 1, so that the slip ring 1 slides axially toward the closed end of the shell 10, and the force of the slip ring 1 during the sliding process is more uniform.

[0061] The limiting structure 52 is installed on the outer peripheral surface of the housing 10, and the limiting structure 52 is used to fix the relative positions of the two ends of the fishing wire 51, that is, to maintain the position state of the slip ring 1. Specifically, Figure 6 , Figure 7As shown, a plurality of limiting balls 511 are fixed at both ends of the fish line 51, and the limiting balls 511 are arranged equidistantly along the length direction of the fish line 51. The limiting structure 52 includes a square limiting tube 521, a rocker rod 523 and a rotating rod 522. The limiting tube 521 is fixed to the outer peripheral surface of the shell 10, and both ends of the fish line 51 pass through the limiting tube 521, and the two ends of the fish line 51 are arranged side by side radially along the limiting tube 521.

[0062] An avoidance hole 525 is provided in the middle of the limiting tube 521, and the rotating rod 522 is perpendicular to the axis of the limiting tube 521. One end of the rotating rod 522 is connected to the limiting tube 521 for damping rotation. The damping connection can be in the form of a hole provided on the inner wall of the limiting tube 521, one end of the rotating rod 522 is rotatably matched with the hole, and an O-ring is provided between the hole wall and the outer wall of the rotating rod 522; the other end of the rotating rod 522 is fixed to the middle of the swing rod 523, the swing rod 523 is perpendicular to the rotating rod 522, the swing rod 523 is located in the avoidance hole 525, and both ends of the swing rod 523 are fixed with stoppers 524. The avoidance hole 525 is used to provide rotation space for the swing rod 523 and the stopper 524, and part of the structure of the stopper 524 penetrates into the inner cavity of the limiting tube 521, so that the stopper 524 can block the limiting ball 511 from moving axially along the limiting tube 521.

[0063] In addition, a bayonet 526 is provided on the hole wall of the avoidance hole 525 , and two bayonet 526 are respectively provided corresponding to the two stoppers 524 .

[0064] The implementation principle of Example 1 is as follows: when installing the end cover 2, first ensure that there is a large axial gap between the second mating surface 12 of the slip ring 1 and the first mating surface 31 of the second connecting sleeve 3 (at this time, the fish wire 51 is in a relaxed state), and then move the end cover 2 toward the housing 10, and the end of the spring piece 23 of the end cover 2 first touches the guide surface 13, and continue to move the end cover 2. Under the guidance of the guide surface 13, the spring piece 23 of the end cover 2 elastically deflects, so that each spring piece 23 elastically converges, and the diameter of the virtual circle formed by each spring piece 23 decreases, and the end cover 2 is continued to be moved, and the spring piece 23 is separated from the guide surface 13, and the spring piece 23 recovers its deformation, and Ensure that the spring piece 23 fits the first mating surface 31 and stop moving the end cover 2; at the same time, pull the two ends of the fishing line 51 so that the two ends move toward each other, that is, the fishing line 51 can be tightened. The fishing line 51 cooperates with the first ring body 14 and the second ring body 104 to pull the slip ring 1, so that the slip ring 1 slides axially toward the closed end of the shell 10, and the second mating surface 12 clamps the spring piece 23 on the first mating surface 31, thereby completing the fixed installation of the shell 10, the second connecting sleeve 3, the spring piece 23, the first connecting sleeve 22 and the end cover 2, and the two pressure rings 32 also clamp the first sealing ring 33, so that the sealing effect is stronger.

[0065] After the fishing line 51 is tightened (the fishing line 51 has a certain elasticity, and the elastic force of the fishing line 51 will be transmitted to the slip ring 1, so that the second matching surface 12 continues to maintain the state of clamping the spring piece 23, and the installation is more stable), the rotating rod 522 is rotated so that the stopper 524 is located on the moving path of the adjacent limiting ball 511. At this time, the limiting ball 511 is not in contact with the stopper 524, and then the fishing line 51 is loosened, and the elastic force at the end of the fishing line 51 is released to drive the limiting ball 511 to produce a certain displacement (displacement direction is shown in FIG. Figure 6 The limiting ball 511 is pressed against the stop block 524, that is, the limiting ball 511, the stop block 524 and the limiting tube 521 constrain each other to maintain the state of the fishing line 51, thereby completing the installation of the end cover 2. Compared with the prior art, the installation of this embodiment is more convenient and labor-saving.

[0066] When disassembling, the limit of the traction assembly is released. Specifically, the rotating rod 522 is rotated, and the swing rod 523 drives the stopper 524 to move away from the bayonet 526 (the positions of the swing rod 523 and the stopper 524 are shown in FIG. Figure 7 ), the stopper 524 does not block the limiting ball 511, so that the fish wire 51 can move axially smoothly in the limiting tube 521, so as to loosen the fish wire 51, and then the slip ring 1 is moved axially in the direction away from the closed end of the shell 10, ensuring that there is a large axial gap between the second mating surface 12 of the slip ring 1 and the first mating surface 31 of the second connecting sleeve 3. At this time, the spring piece 23 is not pressed by the second mating surface 12, and the spring piece 23 has enough deformation space to move the end cover 2 away from the shell 10. The end of the spring piece 23 touches the second mating surface 12. Under the guidance of the second mating surface 12, the spring piece 23 is elastically offset, so that each spring piece 23 is elastically contracted, and the diameter of the virtual circle formed by each spring piece 23 is reduced, and the end cover 2 continues to be moved, the spring piece 23 is separated from the second connecting sleeve 3, and the spring piece 23 recovers its deformation, thereby completing the disassembly of the end cover 2.

[0067] In this way, by setting the housing 10, the second connecting sleeve 3, the spring sheet 23, the first connecting sleeve 22, the end cover 2 and the traction assembly, during installation, by setting the guide surface 13, each spring sheet 23 is elastically contracted, which is convenient for the spring sheet 23 to fit with the first matching surface 31, and then cooperates with the pressing of the second matching surface 12, so as to quickly complete the installation of the end cover 2, and at the same time, the stability is strong. During disassembly, by moving the slip ring 1, there is a large axial gap between the second matching surface 12 of the slip ring 1 and the first matching surface 31 of the second connecting sleeve 3, so that the spring sheet 23 has enough deformation space, so that each spring sheet 23 is elastically contracted and separated from the second connecting sleeve 3, that is, the disassembly is completed quickly, which is more convenient and labor-saving.

[0068] In other embodiments, the limiting structure 52 can be a bolt, and both ends of the fishing line 51 are fixed on the same bolt. The bolt is threadedly matched with the outer peripheral surface of the shell 10, that is, the bolt can be screwed with an electric screwdriver. When the bolt rotates forward, the end of the fishing line 51 is wrapped around the bolt to tighten the fishing line 51. When the bolt rotates reversely, the fishing line 51 is gradually unwound to loosen the fishing line 51.

[0069] Embodiment 2, embodiment 2 is different from embodiment 1 in that, Figure 8 As shown, a hook portion 231 is integrally formed at the end of the spring sheet 23, and a bendable groove 232 is provided between the hook portion 231 and the spring sheet 23. Under normal conditions, that is, when the hook portion 231 is not subjected to external pressure, the angle between the hook portion 231 and the spring sheet 23 is small.

[0070] like Fig. 9 As shown, an arc-shaped adapting surface 121 is provided between the second mating surface 12 and the inner wall of the slip ring 1, and the adapting surface 121 is used for the inner arc surface of the bent hook portion 231 to fit; a shaping block 311 is fixed between the first mating surface 31 and the inner circumferential surface of the shell 10, and the shaping block 311 is used to abut the outer arc surface of the bent hook portion 231.

[0071] When the second mating surface 12 clamps the spring piece 23 on the first mating surface 31, the shaping block 311 abuts against the outer arc surface of the hook portion 231 to force the hook portion 231 to elastically bend and deform in a direction away from the closed end of the shell 10, and makes the inner arc surface of the hook portion 231 fit the matching surface 121. At this time, the angle between the hook portion 231 and the spring piece 23 is larger, making it more difficult for the spring piece 23 to escape from the clamping between the first mating surface 31 and the second mating surface 12, that is, the installation stability of the end cover 2 is stronger.

[0072] When disassembly is required, the second mating surface 12 is away from the first mating surface 31, the hook portion 231 is not subjected to the pressure of the adapter surface 121, the hook portion 231 recovers its deformation, and the angle between the hook portion 231 and the spring sheet 23 is smaller, making it easier for the spring sheet 23 to elastically contract under the guidance of the second mating surface 12, which makes disassembly easier.

[0073] Embodiment 3, embodiment 3 is different from embodiment 1 in that, Fig.10 As shown, the generatrix of the first mating surface 31 and the second mating surface 12 are both wavy, so that the first mating surface 31 and the second mating surface 12 both have wavy protrusions, and the spring piece 23 is wavy, so that the spring piece 23 is easier to bend elastically.

[0074] During installation, the spring piece 23 is easier to bend elastically on the guide surface 13, that is, the force required to push the end cover 2 is smaller, and the installation is more labor-saving. Moreover, when the first mating surface 31 and the second mating surface 12 clamp the spring piece 23, the wave protrusions of the first mating surface 31 and the second mating surface 12 respectively engage with the spring piece 23, which can increase the clamping area, thereby improving the installation stability. Moreover, the easy-bending characteristic of the wavy spring piece 23 makes the spring piece 23 fit better, and the gap between the spring piece 23 and the wave protrusion is smaller, further improving the installation stability.

[0075] Embodiment 4, embodiment 4 is different from embodiment 1 in that, Fig.11 , Fig.12 As shown, the slip ring 1 is divided into an annular sliding portion 15, an annular first cone ring portion 16 and an annular second cone ring portion 17 in sequence along its own axial direction. The inner circumference of the first cone ring portion 16 is the second matching surface 12, and the inner circumference of the second cone ring portion 17 is the guide surface 13. The sliding portion 15 and the opposite end surfaces of the second cone ring portion 17 are fixedly connected by a plurality of circumferentially evenly arranged connecting pieces 151. The length direction of the connecting piece 151 is the axial direction of the housing 10. The first cone ring portion 16 passes through a sliding hole 161 corresponding to the connecting piece 151. The connecting piece 151 passes through the sliding hole 161. The hole width of the sliding hole 161 is greater than the width of the connecting piece 151, so that the first cone ring portion 16 can be circumferentially slidably matched with the sliding portion 15, and the two end surfaces of the first cone ring portion 16 are respectively fitted on the adjacent end surfaces of the sliding portion 15 and the second cone ring portion 17, that is, the first cone ring portion 16 can synchronously move axially with the sliding portion 15.

[0076] Furthermore, the first ring body 14 is fixed to the outer peripheral surface of the second tapered ring portion 17 .

[0077] The slide bar 11 is fixed on the sliding portion 15 (not shown in the figure), so that the sliding portion 15 and the housing 10 are axially slidingly matched.

[0078] like Fig.11 , Fig.13 As shown, the first mating surface 31 is provided with a plurality of strip-shaped positioning grooves 312 , which extend along the generatrix direction of the first mating surface 31 , and each positioning groove 312 is evenly arranged circumferentially along the first mating surface 31 . The positioning groove 312 has two inclined groove walls, and the spring piece 23 is located in the positioning groove 312 .

[0079] The surface of the elastic piece 23 has a first guiding surface 233 .

[0080] The second mating surface 12 is protruded with a plurality of convex strips 122 . The convex strips 122 extend along the generatrix direction of the second mating surface 12 . The convex strips 122 are evenly arranged along the circumference of the second mating surface 12 . The convex strips 122 have second guide surfaces 123 .

[0081] like Fig.14 As shown, a third ring body 18 for the fish line 51 to pass through is fixed on the outer peripheral surface of the first cone ring portion 16 .

[0082] During installation, the end cover 2 is in place, the spring piece 23 corresponds to the positioning groove 312 one by one, the spring piece 23 is located in the positioning groove 312, and the opposite side edges of the spring piece 23 are respectively abutted against two inclined groove walls, and the inclined groove walls of the positioning groove 312 are used to limit the circumferential sliding of the spring piece 23, tighten the fish wire 51, and the slip ring 1 moves axially toward the closed end of the shell 10. In the process of tightening the fish wire 51, the inclination angle of the part of the fish wire 51 located between the first ring body 14 and the second ring body 104 changes ( Fig.14 The arrow direction in the first state diagram is the moving direction of the sliding portion 15 and the first cone ring portion 16 when the fish wire 51 is tightened), and the change in the inclination angle will be transmitted to the first cone ring portion 16 through the third ring body 18, thereby driving the first cone ring portion 16 to deflect positively (the positive deflection direction is Fig.14 In the second state diagram, the first cone ring portion 16 and the convex strip 122 are deflected in the positive circumferential direction, which not only makes the second guide surface 123 of the convex strip 122 fit the first guide surface 233 of the spring sheet 23, but also further embeds the spring sheet 23 into the positioning groove 312 ( Fig.13 The two arrow directions in the figure are respectively the positive circumferential offset direction of the convex strip 122 and the compressed moving direction of the spring piece 23), and the convex strip 122 also applies axial pressure to the spring piece 23, that is, under the double pressure, the matching stability between the spring piece 23 and the positioning groove 312 is stronger, thereby improving the installation stability of the end cover 2.

[0083] Embodiment 5, embodiment 5 is different from embodiment 4 in that, Fig.15 , Fig.16 , Fig.17 As shown, the opposing surfaces of the two pressure rings 32 are both conical surfaces, and a second sealing ring 35 is clamped between the two pressure rings 32. The cross-sectional shape of the second sealing ring 35 is an isosceles triangle. A plurality of extension strips 351 are integrally formed at the outer diameter of the second sealing ring 35. The extension strips 351 are inclinedly arranged and are attached to the first mating surface 31. The thickness of the extension strips 351 is less than the thickness of the spring piece 23.

[0084] like Fig.16 , Fig.18 As shown, the ends of each extension strip 351 away from the second sealing ring 35 are commonly connected to a rubber ring 352 , the cross section of the rubber ring 352 is L-shaped, and a plurality of first right-angled triangular teeth 353 are fixed to the inner circumference of the rubber ring 352 , and the first right-angled triangular teeth 353 are evenly arranged around the rubber ring 352 circumferentially.

[0085] like Fig.15 , Fig.19 As shown, a plurality of second right-angled triangular teeth 162 are fixed to the end surface of the first cone ring portion 16 . The second right-angled triangular teeth 162 are protrudingly arranged, and the inclined surfaces of the second right-angled triangular teeth 162 are in contact with the inclined surfaces of the first right-angled triangular teeth 353 .

[0086] During installation, the second sealing ring 35 is placed on the surface of the pressure ring 32 of the second connecting sleeve 3, the extension strip 351 is fitted to the first matching surface 31, and the rubber ring 352 is located at the outer diameter of the first matching surface 31, so that the end cover 2 is in place, the spring piece 23 is located in the circumferential gap between the two adjacent extension strips 351, and the pressure ring 32 of the first connecting sleeve 22 is attached to the surface of the second sealing ring 35, and then the fishing wire 51 is pulled, and the slip ring 1 moves axially toward the closed end of the shell 10, and the second triangular tooth gradually enters the inner side of the connecting ring, and during the tightening process of the fishing wire 51, the inclination angle of the part of the fishing wire 51 between the first ring body 14 and the second ring body 104 changes, and the change in the inclination angle will be transmitted to the first cone ring part 16 through the third ring body 18, thereby driving the first cone ring part 16 to deflect positively ( Fig.19 The arrow direction in the figure is the positive deflection direction of the first cone ring portion 16), that is, during the process in which the second mating surface 12 is pressed toward the spring sheet 23 in the axial direction, the first cone ring portion 16 is deflected in the positive circumferential direction, and because the spring sheet 23 limits the circumferential sliding of the extension strip 351 and the rubber ring 352, that is, the first right-angle triangular tooth 353 has no circumferential sliding, the inclined surface of the circumferentially deflected second right-angle triangular tooth 162 is pressed against the inclined surface of the first right-angle triangular tooth 353, so as to force the rubber ring 352 to expand elastically (the elastic expansion direction of the rubber ring 352 is Fig.19 ), so as to drive the extension strip 351 to eject and stretch, thereby driving the second sealing ring 35 to elastically expand, so that the second sealing ring 35 is more evenly attached to the surface of the pressure ring 32, reducing the matching gap, and finally cooperating with the pressing of the pressure ring 32 of the first connecting sleeve 22, thereby improving the sealing strength and sealing effect of the second sealing ring 35.

[0087] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A household RO membrane quick-install membrane housing, characterized in that: The invention comprises a circular shell (10), an end cover (2), a slip ring (1) and a traction assembly, wherein one end of the shell (10) has an opening, and the other end of the shell (10) is closed, the closed end of the shell (10) has a first water outlet hole (101) and a second water outlet hole (102), and the end cover (2) has a water inlet hole (21); an annular first connecting sleeve (22) is integrally formed at the outer diameter of the end cover (2), and one end of the first connecting sleeve (22) is integrally formed with a spring sheet (23) arranged obliquely outward, and each spring sheet (23) is evenly arranged along the circumference of the first connecting sleeve (22); the slip ring (1) is axially slidably matched with the shell (10), and the open end of the shell (10) is provided with a first connecting sleeve (22) and a second connecting sleeve (10) is provided with a second connecting sleeve (21) and a second connecting sleeve (22) is provided with a second connecting sleeve (2 ... and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (22) and a second connecting sleeve (2 A second connecting sleeve (3) is fixed to the inner wall, and the outer peripheral surface of the second connecting sleeve (3) is set as a first matching surface (31), and the diameter of the first matching surface (31) gradually decreases in the direction away from the closed end of the shell (10); the inner peripheral surface of the slip ring (1) has a second matching surface (12) and a guide surface (13), and the diameter of the second matching surface (12) gradually decreases in the direction away from the closed end of the shell (10), and the diameter of the guide surface (13) gradually increases in the direction away from the closed end of the shell (10); the traction assembly is used to force the slip ring (1) to move axially in the direction toward the closed end of the shell (10), and the second matching surface (12) clamps the spring sheet (23) on the first matching surface (31).

2. The household RO membrane quick-install membrane housing according to claim 1, characterized in that: The first mating surface (31), the second mating surface (12) and the guide surface (13) are all conical surfaces. The traction assembly comprises a fishing line (51) and a limiting structure (52). The outer peripheral surface of the slip ring (1) is fixed with a plurality of first ring bodies (14) arranged evenly around the circumference. The outer peripheral surface of the shell (10) is fixed with a plurality of second ring bodies (104) arranged evenly around the circumference. The first ring bodies (14) and the second ring bodies (104) are staggered along their own arrangement directions. The fishing line (51) is arranged along the outer peripheral surface of the slip ring (1). The fish wire (51) passes through each of the first ring body (14) and the second ring body (104) for a plurality of times, so that the fish wire (51) is arranged in a wavy shape; the limiting structure (52) is installed on the outer peripheral surface of the shell (10), and the limiting structure (52) is used to fix the relative positions of the two ends of the fish wire (51); when the fish wire (51) is tightened, the slip ring (1) moves axially toward the closed end of the shell (10), and the second matching surface (12) clamps the spring sheet (23) on the first matching surface (31).

3. The household RO membrane quick-install membrane housing according to claim 2, characterized in that: A plurality of limiting balls (511) are fixed to both ends of the fishing line (51), and the limiting balls (511) are arranged equidistantly along the length direction of the fishing line (51); the limiting structure (52) comprises a square limiting tube (521), a swing rod (523) and a rotating rod (522); the limiting tube (521) is fixed to the outer peripheral surface of the housing (10); both ends of the fishing line (51) pass through the limiting tube (521), and the two ends of the fishing line (51) are arranged side by side along the radial direction of the limiting tube (521); a avoiding hole (525) is provided in the middle of the limiting tube (521), and one end of the rotating rod (522) is connected to the limiting tube (521) to damp the rotating rod (522). The rotating rod (522) is perpendicular to the axis of the limiting tube (521), the other end of the rotating rod (522) is fixed to the middle of the swing rod (523), the swing rod (523) is perpendicular to the rotating rod (522), the swing rod (523) is located in the avoidance hole (525), and blocks (524) are fixed at both ends of the swing rod (523), the blocks (524) are used to block the limiting ball (511) from moving axially along the limiting tube (521), and the hole wall of the avoidance hole (525) is provided with a bayonet (526), ​​and the elastic force of the fishing line (51) is applied to the block (524) through the limiting ball (511) to force the block (524) to abut against the bayonet (526).

4. The household RO membrane quick-install membrane housing according to claim 1, characterized in that: The first mating surface (31), the second mating surface (12) and the guide surface (13) are all conical surfaces; a hook portion (231) is integrally formed at the end of the spring sheet (23); a bendable groove (232) is provided between the hook portion (231) and the spring sheet (23); an adapting surface (121) for the inner arc surface of the hook portion (231) to fit is provided between the second mating surface (12) and the inner wall of the slip ring (1); and the first mating surface (31) and the housing are connected to each other. (10) A shaping block (311) is fixed between the inner circumferential surfaces and abuts against the outer arc surface of the hook portion (231); when the second matching surface (12) clamps the spring sheet (23) on the first matching surface (31), the shaping block (311) abuts against the outer arc surface of the hook portion (231) to force the hook portion (231) to elastically bend and deform in a direction away from the closed end of the shell (10), and the inner arc surface of the hook portion (231) fits against the matching surface (121).

5. The household RO membrane quick-install membrane housing according to claim 1, characterized in that: The generatrix of the first mating surface (31) and the second mating surface (12) are both wavy, so that the first mating surface (31) and the second mating surface (12) both have wavy protrusions; the spring sheet (23) is wavy; when the first mating surface (31) and the second mating surface (12) clamp the spring sheet (23), the wavy protrusions of the first mating surface (31) and the second mating surface (12) respectively engage with the spring sheet (23).

6. The household RO membrane quick-install membrane housing according to claim 2, characterized in that: The slip ring (1) is divided into an annular sliding portion (15), a first conical ring portion (16) and a second conical ring portion (17) in sequence along its own axial direction; the inner circumference of the first conical ring portion (16) is the second matching surface (12); the inner circumference of the second conical ring portion (17) is the guide surface (13); the sliding portion (15) and the opposite end surfaces of the second conical ring portion (17) are fixedly connected by a plurality of connecting pieces (151) evenly arranged in the circumferential direction; the first conical ring portion (16) is penetrated by a pair of A sliding hole (161) is provided on the connecting piece (151), the connecting piece (151) passes through the sliding hole (161), the hole width of the sliding hole (161) is greater than the width of the connecting piece (151), the first cone ring portion (16) is circumferentially slidably matched with the sliding portion (15); the first matching surface (31) is provided with a plurality of positioning grooves (312), the positioning grooves (312) extend along the generatrix direction of the first matching surface (31), the positioning grooves (312) have two inclined groove walls, and the spring sheet (23) is located in the positioning groove (312), and the two opposite side edges of the spring sheet (23) are respectively in contact with the two inclined groove walls; the surface of the spring sheet (23) has a first guide surface (233), the second matching surface (12) is protrudingly structured with a plurality of convex strips (122), the convex strips (122) extend along the generatrix direction of the second matching surface (12), and the convex strips (122) have a second guide surface (123); the first ring body (14) is fixed to the outer peripheral surface of the second cone ring portion (17), and the second A third ring body (18) is fixed on the outer peripheral surface of a conical ring portion (16) for the fish wire (51) to pass through; when the fish wire (51) is tightened, the slip ring (1) moves axially in the direction toward the closed end of the shell (10) and the fish wire (51) drives the first conical ring portion (16) to deflect in the positive direction through the third ring body (18), and the second guide surface (123) of the protruding strip (122) is fitted with the first guide surface (233) of the spring sheet (23) to embed the spring sheet (23) into the positioning groove (312).

7. The household RO membrane quick-install membrane housing according to claim 2, characterized in that: The slip ring (1) is divided into an annular sliding portion (15), a first conical ring portion (16) and a second conical ring portion (17) in sequence along its own axial direction; the inner circumference of the first conical ring portion (16) is the second matching surface (12); the inner circumference of the second conical ring portion (17) is the guide surface (13); the sliding portion (15) and the opposite end surfaces of the second conical ring portion (17) are fixedly connected by a plurality of connecting pieces (151) evenly arranged in the circumferential direction; the first conical ring portion (16) is penetrated by sliding holes (161) arranged one by one with the connecting pieces (151); the connecting pieces (151) are connected to the sliding holes (161) of the first conical ring portion (16). The sheet (151) passes through a sliding hole (161), the hole width of the sliding hole (161) is larger than the width of the connecting sheet (151), and the first conical ring portion (16) is circumferentially slidably matched with the sliding portion (15); the first ring body (14) is fixed to the outer circumference of the second conical ring portion (17), and the outer circumference of the first conical ring portion (16) is fixed with a third ring body (18) for the fish wire (51) to pass through; the inner circumferences of the first connecting sleeve (22) and the second connecting sleeve (3) are coaxially fixed with a pressure ring (32), and a first pressure ring (32) is sandwiched between the two pressure rings (32). The second sealing ring (35) has a cross-sectional shape of an isosceles triangle. A plurality of extension strips (351) are integrally formed at the outer diameter of the second sealing ring (35). The extension strips (351) pass through the gap between two adjacent elastic sheets (23) and are located at the inner circumference of the first cone ring portion (16). The ends of the extension strips (351) away from the second sealing ring (35) are commonly connected to a rubber ring (352). The cross-sectional shape of the rubber ring (352) is L-shaped. A plurality of first right-angled triangular teeth (353) are fixed to the inner circumference of the rubber ring (352). The first cone ring portion (16) is provided with a plurality of first right-angled triangular teeth (353). A plurality of second right-angled triangular teeth (162) are fixed to the end surface of the ring portion (16), and the inclined surfaces of the second right-angled triangular teeth (162) are fitted with the inclined surfaces of the first right-angled triangular teeth (353); when the fishing line (51) is tightened, the slip ring (1) moves axially in the direction toward the closed end of the shell (10), and the fishing line (51) drives the first cone ring portion (16) to deflect positively through the third ring body (18), and the positively deflected first cone ring portion (16) forces the second sealing ring (35) to expand elastically through the cooperation of the second right-angled triangular teeth (162) and the first right-angled triangular teeth (353).

8. The household RO membrane quick-install membrane housing according to claim 1, characterized in that: A pressure ring (32) is coaxially fixed on the inner circumference of the first connecting sleeve (22) and the second connecting sleeve (3), and a first sealing ring (33) is clamped between the two pressure rings (32).

9. The household RO membrane quick-install membrane housing according to claim 1, characterized in that: A plurality of axially extending slide bars (11) are integrally formed at one end of the slip ring (1), and the slide bars (11) are evenly arranged along the circumference of the shell (10). The outer circumferential surface of the shell (10) is provided with a slide groove (103) that slidably cooperates with the slide bars (11).

10. An RO membrane element, characterized in that: It comprises an RO membrane core (20) and the household RO membrane quick-install membrane shell according to claim 1.

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