Glass fiber reinforced plastic membrane shell and bottom side opening nozzle structure for glass fiber reinforced plastic membrane shell

Abstract

The invention discloses a glass fiber reinforced plastic membrane shell and a bottom side opening nozzle structure for the glass fiber reinforced plastic membrane shell, and relates to the technical field of glass fiber reinforced plastic membrane shells, the glass fiber reinforced plastic membrane shell comprises a glass fiber reinforced plastic membrane shell main body, a side opening nozzle combination structure and a quick release mechanism, the side opening nozzle combination structure is arranged on the outer side of the glass fiber reinforced plastic membrane shell main body; the quick release mechanism is arranged on the inner side of the glass fiber reinforced plastic membrane shell body, the side opening nozzle combination structure comprises a nozzle nest, the nozzle nest is formed in the outer side of the glass fiber reinforced plastic membrane shell body, meanwhile, the transportation and installation convenience is improved, a streamline gradually-expanded conical opening is adopted in the side opening nozzle body, internal water flow transition is optimized, vortex generated by right-angle transition is avoided, and the service life of the glass fiber reinforced plastic membrane shell body is prolonged. Therefore, the conditions of thickness increase and serious material accumulation caused by local confrontation stress concentration of the end part are avoided, and meanwhile, the short plate of stress concentration caused by discontinuous structure due to a deep pit lifting mode is avoided, so that the weight and the production cost of the glass fiber reinforced plastic membrane shell are reduced while the strength of the glass fiber reinforced plastic membrane shell is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass steel membrane shell, in particular to a glass steel membrane shell and a bottom side opening nozzle structure for the glass steel membrane shell. BACKGROUND

[0002] The glass steel membrane shell is a cylindrical pressure-bearing equipment made of glass fiber as reinforcing material and resin as matrix through winding forming or molding process, which is a core supporting component of membrane separation system such as reverse osmosis, nanofiltration and ultrafiltration. Its core function is to fix and protect the membrane element, and at the same time provide a stable high-pressure sealing environment for the membrane separation process. It is usually composed of a cylinder, an end cover, a side opening nozzle and a sealing assembly. The cylinder is processed by continuous winding process to ensure that it is not easy to deform and leak under a working pressure of zero point six to four point zero megapascals. The end cover is connected by flange type, clamp type or screw type to facilitate the assembly and maintenance of the membrane element. The side opening nozzle serves as a fluid inlet and outlet channel to realize the orderly flow of raw water injection, pure water discharge and concentrated water discharge.

[0003] The bottom side opening nozzle structure is a key fluid inlet and outlet component of the glass steel membrane shell, usually arranged at a position close to the end cover on the side of the membrane shell cylinder, and integrally formed with the membrane shell cylinder. It has pressure-bearing sealing and flow guiding functions, and can realize the orderly flow of raw water injection, pure water discharge or concentrated water discharge. The structural design directly affects the sealing reliability, fluid resistance and stress distribution of the membrane shell. By optimizing the configuration, water flow vortex can be reduced, stress concentration can be reduced, and the efficient and stable operation of the membrane separation system can be ensured.

[0004] However, the existing glass steel membrane shell and the bottom side opening nozzle structure for the glass steel membrane shell have the following disadvantages: The side opening nozzle at the end of the glass steel membrane shell is a weak link in its structure. The bottom of the traditional side opening nozzle is usually flat and flush with the inner diameter of the membrane shell. This structure easily leads to a deep recess in the end of the membrane shell to accommodate the flat bottom of the side opening nozzle and to smoothly transition the inner wall of the cylinder. This results in an increase in the local thickness of the end part and a serious accumulation of materials. Furthermore, this deep recess method causes severe structural discontinuity, resulting in severe stress concentration at the corner. To resist this stress, the traditional design must further increase the volume and wall thickness of the entire end, which increases the weight and cost significantly.

[0005] 2) The glass steel membrane shell on the market is relatively cumbersome to disassemble and assemble because the internal structure of the glass steel membrane shell needs to ensure a certain sealing and the remaining structure needs to have a certain stability. This makes the disassembly process inconvenient, and some professional disassembly tools are required to disassemble, which further reduces the efficiency of the disassembly work and increases the working time.

[0006] Therefore, we propose a fiberglass membrane shell and a bottom-side opening structure for the fiberglass membrane shell to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a fiberglass membrane shell and a bottom-side opening structure for the fiberglass membrane shell. By setting the bottom sealing ring of the side opening as a raised arc-shaped curved surface, a natural and smooth transition between the side opening and the inner wall of the membrane shell is achieved, eliminating deep depressions and sharp corners. Combined with the locking ring groove, stress is further dispersed, avoiding material accumulation. The volume of the membrane shell end is reduced, achieving lightweighting, saving raw materials and reducing costs, while improving the convenience of transportation and installation. The streamlined gradually expanding tapered opening inside the side opening optimizes the water flow transition, avoiding the generation of eddies, ensuring strength while solving the stress concentration problem. During disassembly, turning the rubber torsion ring drives the tapered threaded ring to rotate, causing the pulling rod to converge and drive the sliding block to disengage from the locking ring groove, and the end cap can be pulled out directly. When the tightness is high, continuous turning can drive the end cap to move out through the thread transmission without tools, improving disassembly efficiency and shortening working time.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a fiberglass membrane shell, comprising a fiberglass membrane shell body and a quick-release mechanism, wherein the quick-release mechanism is disposed on the inner side of the fiberglass membrane shell body; The quick-release mechanism includes a snap-fit ​​ring groove, which is located on the inner side of the fiberglass membrane shell body. An internal threaded ring is located on another part of the inner side of the fiberglass membrane shell body. An end cap is provided on the inner side of one end of the fiberglass membrane shell body. A snap-fit ​​integrated plate is fitted onto the outer side of one end of the end cap. Multiple sliding grooves are provided on the inner side of the snap-fit ​​integrated plate, and multiple sliding openings are provided on the outer side of the snap-fit ​​integrated plate. A sliding block is slidably connected to the inner side of the sliding groove. A pulling rod is installed on the outer side of the sliding block. Two limiting strips are installed on the inner side of the sliding block, and compression springs are provided on the inner side of each limiting strip. Multiple limiting holes are provided on the inner side of the snap-fit ​​integrated plate. A tapered threaded ring is provided on the outer side of the pulling rod, and a tapered threaded ring is fitted onto the outer side of the pulling rod.

[0009] Preferably, the plurality of sliding openings and sliding grooves are interconnected and correspond to each other, the pulling rod slides on the inner side of the sliding opening, the limiting strip slides on the inner side of the limiting hole, and the tapered threaded ring is threadedly connected to the tapered threaded ring.

[0010] Preferably, a rubber torsion ring is installed on the outer side of the tapered threaded ring, and a threaded cylinder is installed on the outer side of the snap-fit ​​integrated plate.

[0011] Preferably, the threaded cylinder is threadedly connected to the internal threaded ring, the outer side of the end cap is provided with a locking groove, and the bottom of the pulling rod is provided with an internal locking block, which engages and corresponds with the locking groove.

[0012] Preferably, the outer side of the fiberglass membrane shell body is provided with a side-opening mouth assembly structure, the side-opening mouth assembly structure including a mouth socket, the mouth socket being opened on the outer side of the fiberglass membrane shell body.

[0013] Preferably, a first sealing groove is provided on the inner side of the mouth socket, and a first sealing ring is provided on the inner side of the first sealing groove.

[0014] Preferably, a nut is provided on the inner side of the mouth socket, the first sealing ring is installed at the bottom of the nut, and a side opening mouth hole is provided on the outer side of the fiberglass membrane shell body.

[0015] Preferably, a side-opening mouth body is installed on the inner side of the side-opening mouth hole, an external threaded ring is provided on the outer side of the side-opening mouth body, and a sealing ring is installed at the bottom of the side-opening mouth body.

[0016] Preferably, the inner side of the fiberglass membrane shell body is provided with a retaining ring groove, the external threaded ring is threadedly connected to the nut, and the sealing retaining ring is located inside the retaining ring groove.

[0017] Preferably, the outer side of the side-opening mouth body has two second sealing grooves, and the inner side of each of the two second sealing grooves is fitted with a second sealing ring. The top of the sealing ring has a third sealing groove, and the inner side of the third sealing groove is provided with a third sealing ring. The inner side of the side-opening mouth body has a streamlined gradually expanding conical opening.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a raised, arc-shaped sealing ring at the bottom of the side-opening nozzle, creating a natural transition at the bottom. The structural joints are smooth and tightly fitted, with uniform material distribution. The arc-shaped sealing ring is directly embedded in the inner wall of the fiberglass membrane shell, eliminating the need for deep recesses and reducing the required depth. It also eliminates sharp corners at the bottom of deep recesses, allowing stress to be smoothly dispersed. The sealing ring is accommodated by a locking groove, further smoothing the inner wall of the membrane shell and reducing stress concentration. This avoids increased weight and cost due to material accumulation. The absence of deep recesses and extensive reinforcing materials reduces the outer diameter and volume of the membrane shell end, achieving lightweight design, saving raw materials, improving economic efficiency, and enhancing transportation and installation convenience. The side-opening nozzle body uses a streamlined, gradually expanding conical opening to optimize internal water flow transition and avoid eddies caused by right-angle transitions. This prevents increased thickness and severe material accumulation at the end due to localized stress concentration, and also avoids the structural discontinuity and stress concentration issues caused by deep recesses. Thus, while ensuring the strength of the fiberglass membrane shell, its weight and production costs are reduced.

[0019] 2. When the fiberglass membrane shell of this invention needs to be disassembled, the rubber torsion ring fitted on the conical threaded ring is turned, causing the conical threaded ring to engage and rotate on the conical threaded ring outside the pull rod. Because both are conical, the conical threaded ring will move towards the sliding block, causing the pull rods at various points to converge towards its axis. This, in turn, causes the sliding block to squeeze and compress the spring and disengage from the snap ring groove. The end cap can then be pulled out directly after the limit is released. If the end cap and the inner wall of the membrane shell have a high degree of tightness, the conical threaded ring will be fixed to its limit after being turned to the deepest part of the pull rod. Continued turning can transmit force to the snap-integrated plate through the pull rod and the sliding block, causing the threaded cylinder to rotate and engage with the inner threaded ring, so that the snap-integrated plate is taken away from the inside of the membrane shell. At this time, the inner snap block of the pull rod slides into the engagement groove. The pull rod, the snap-integrated plate, and the threaded cylinder simultaneously drive the end cap to move outward, completing the disassembly. The entire process does not require any tools; it is only necessary to continuously turn the conical threaded ring in the same direction, thereby improving the efficiency of disassembly and reducing working time. Attached Figure Description

[0020] Figure 1 This is a perspective view of the main structure of a fiberglass membrane shell and a bottom side opening structure for a fiberglass membrane shell according to the present invention. Figure 2 This is a three-dimensional structural breakdown view of a fiberglass membrane shell and a bottom side opening structure for a fiberglass membrane shell according to the present invention. Figure 3 This is a split perspective view of the side opening assembly structure in the bottom side opening structure of the fiberglass membrane shell and the fiberglass membrane shell according to the present invention. Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a split perspective view of a fiberglass membrane shell and a quick-release mechanism in a bottom side opening structure for a fiberglass membrane shell according to the present invention. Figure 6 for Figure 5 Enlarged view of point B in the image; Figure 7 for Figure 5 Enlarged view of point C in the image; Figure 8 This is a cross-sectional view of a fiberglass membrane shell and a snap-fit ​​integrated plate in a bottom side opening structure for a fiberglass membrane shell according to the present invention. Figure 9 This is a cross-sectional view of the main body of a fiberglass membrane shell and a bottom-side opening structure for a fiberglass membrane shell according to the present invention.

[0021] In the diagram: 1. Fiberglass membrane shell body; 2. Side-opening nozzle assembly structure; 201. Nozzle recess; 202. First sealing groove; 203. First sealing ring; 204. Nut; 205. Side-opening nozzle body; 206. External threaded ring; 207. Second sealing groove; 208. Second sealing ring; 209. Sealing retainer ring; 210. Third sealing groove; 211. Third sealing ring; 212. Side-opening nozzle hole; 213. Streamlined gradually expanding tapered opening; 214. Engaging ring. 3. Quick-release mechanism; 301. Snap ring groove; 302. Internal threaded ring; 303. End cap; 304. Snap integrated plate; 305. Slide groove; 306. Slide opening; 307. Sliding block; 308. Compression spring; 309. Pulling rod; 310. Tapered threaded ring; 311. Internal locking block; 312. Tapered threaded ring; 313. Rubber torsion ring; 314. Threaded cylinder; 315. Engaging groove; 316. Limiting strip; 317. Limiting hole. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, according to Figure 1 - Figure 4As shown, a fiberglass membrane shell and a bottom-side opening structure for the fiberglass membrane shell include a fiberglass membrane shell body 1, a side-opening assembly structure 2, and a quick-release mechanism 3. The side-opening assembly structure 2 is disposed on the outer side of the fiberglass membrane shell body 1, and the quick-release mechanism 3 is disposed on the inner side of the fiberglass membrane shell body 1. The side-opening assembly structure 2 includes a mouth socket 201, which is opened on the outer side of the fiberglass membrane shell body 1. A first sealing groove 202 is opened on the inner side of the mouth socket 201, and a first sealing ring 203 is disposed on the inner side of the first sealing groove 202. A nut 204 is disposed on the inner side of the mouth socket 201, and the first sealing ring 203 is installed at the bottom of the nut 204. A side-opening hole 212 is opened on the outer side of the fiberglass membrane shell body 1. The inner side of the side opening mouth body 205 is provided with an external threaded ring 206 on the outer side of the side opening mouth body 205. A sealing ring 209 is provided at the bottom of the side opening mouth body 205. A retaining ring groove 214 is provided on the inner side of the fiberglass membrane shell body 1. The external threaded ring 206 is threadedly connected to the nut 204. The sealing ring 209 is located inside the retaining ring groove 214. Two second sealing grooves 207 are provided on the outer side of the side opening mouth body 205. A second sealing ring 208 is fitted on the inner side of each of the two second sealing grooves 207. A third sealing groove 210 is provided on the top of the sealing ring 209. A third sealing ring 211 is provided on the inner side of the third sealing groove 210. A streamlined gradually expanding tapered opening 213 is provided on the inner side of the side opening mouth body 205.

[0024] The overall effect of Embodiment 1 is as follows: the bottom sealing ring 209 of the side-opening mouth is changed from a traditional flat surface to a raised arc-shaped surface, making the bottom of the side-opening mouth a naturally transitioning arc shape. The structural joints are tight and smooth, the material is evenly distributed, the structure is more reasonable, and the stress concentration source of the deep recess is eliminated. The arc-shaped sealing ring 209 is directly embedded in the inner wall of the fiberglass membrane shell body 1, eliminating the need for a very deep recess, reducing the depth requirement of the recess, and at the same time eliminating the sharp corners at the bottom of the deep recess, so that the stress can be smoothly distributed. Furthermore, the sealing ring is secured by the locking ring groove 214. The ring 209 accommodates the inner wall of the fiberglass membrane shell 1, making it smoother and further reducing stress concentration. This avoids the problem of increased weight and cost caused by material stacking. Since deep mortises and a large amount of reinforcing materials are no longer needed, the outer diameter and volume of the fiberglass membrane shell are reduced, and the weight is lighter. The weight reduction also saves raw materials, thereby improving economy. The convenience of transportation and installation is also improved. Overall, the streamlined tapered opening 213 inside the side-opening body 205 further improves the internal water flow transition and avoids the generation of eddies due to right-angle transitions.

[0025] Example 2, according to Figure 5 - Figure 9As shown, the quick-release mechanism 3 includes a snap-fit ​​ring groove 301, which is located on the inner side of the fiberglass membrane shell body 1. An internal threaded ring 302 is located on another part of the inner side of the fiberglass membrane shell body 1. An end cap 303 is provided on the inner side of one end of the fiberglass membrane shell body 1. A snap-fit ​​integrated plate 304 is fitted onto the outer side of one end of the end cap 303. Multiple sliding grooves 305 are provided on the inner side of the snap-fit ​​integrated plate 304, and multiple sliding openings 306 are provided on the outer side of the snap-fit ​​integrated plate 304. The multiple sliding openings 306 communicate and correspond with the sliding grooves 305. A sliding block 307 is slidably connected to the inner side of the sliding groove 305. A pulling rod 309 is installed on the outer side of the sliding block 307, and the pulling rod 309 slides within the sliding opening 306. Two limiting positions are installed on the inner side of the sliding block 307. The inner side of the limiting strip 316 is provided with a compression spring 308. The inner side of the snap-fit ​​integrated plate 304 is provided with multiple limiting holes 317. The limiting strip 316 slides on the inner side of the limiting holes 317. The outer side of the pulling rod 309 is provided with a tapered threaded ring 310. The outer side of the pulling rod 309 is provided with a tapered threaded ring 312. The tapered threaded ring 312 is threadedly connected to the tapered threaded ring 310. A rubber torsion ring 313 is installed on the outer side of the tapered threaded ring 312. A threaded cylinder 314 is installed on the outer side of the snap-fit ​​integrated plate 304. The threaded cylinder 314 is threadedly connected to the inner threaded ring 302. The outer side of the end cap 303 is provided with a locking groove 315. The bottom of the pulling rod 309 is provided with an inner locking block 311. The inner locking block 311 engages with the locking groove 315.

[0026] The overall effect of Embodiment 2 is as follows: When the fiberglass membrane shell body 1 needs to be disassembled during subsequent use, the rubber torsion ring 313 is turned. The rubber torsion ring 313 is sleeved on the conical threaded ring 312, driving the conical threaded ring 312 to rotate. At the same time, it protects the operator's hands. The conical threaded ring 312 engages and rotates on the conical threaded ring 310 outside the pull rod 309. Because the conical threaded ring 312 and the conical threaded ring 310 are conical, the conical threaded ring 312 gradually moves towards the sliding block 307 during rotation. The threaded ring 312 is a fixed integral ring, causing the pulling rods 309 at various points to gradually engage and rotate, moving towards the conical threaded ring 312 and converging towards the axis of the conical threaded ring 312. The pulling rods 309 drive the sliding block 307 to move synchronously, and the sliding block 307 compresses the spring 308, gradually disengaging from the snap ring groove 301. The end cap 303 then disengages from its limited position and can be directly pulled out from the fiberglass membrane shell body 1. In some cases, when the end cap 303 has a high degree of tightness with the inner wall of the fiberglass membrane shell body 1, the conical threaded ring 31... 2. After turning to the deepest point of the pull rod 309, the tapered threaded ring 312 is fixed in place by the pull rod 309. Continue turning the tapered threaded ring 312. The tapered threaded ring 312 transmits force to the sliding block 307 via the pull rod 309, and then to the snap-fit ​​integrated plate 304 via the sliding block 307, causing the threaded cylinder 314 to rotate. When the threaded cylinder 314 rotates, through its engagement with the inner threaded ring 302, it gradually pulls the snap-fit ​​integrated plate 304 away from the interior of the fiberglass membrane shell body 1. When the tapered threaded ring 312 is fixed in place by the pull rod 309... When the pull rod 309 slides to the innermost side of the slide 306, the inner locking block 311 on the pull rod 309 slides into the locking groove 315. When the pull rod 309, the snap-fit ​​integrated plate 304 and the threaded cylinder 314 move outward, the end cover 303 also moves outward, completing the disassembly of the end cover 303. This allows the fiberglass membrane shell to be disassembled without the use of any disassembly tools or professional equipment. In the entire disassembly process, the tapered threaded ring 312 only needs to be turned in the same direction to complete the disassembly.

[0027] The working principle of the entire device is as follows: By designing the sealing ring 209 at the bottom of the side-opening nozzle body 205 as an arc shape to fit the fiberglass membrane shell body 1, when installing the side-opening nozzle onto the fiberglass membrane shell body 1, the side-opening nozzle body 205 and the sealing ring 209 are inserted from the inside of the fiberglass membrane shell body 1 into the side-opening nozzle hole 212. The arc-shaped sealing ring 209 fits and is embedded in the retaining ring groove 214. At this time, the top of the side-opening nozzle body 205 passes through the side-opening nozzle hole 212 and protrudes. Then, the nut 204 is sleeved on the side-opening nozzle body 205. Through the threaded connection between the nut 204 and the external threaded ring 206, the assembly of the side-opening nozzle body 205 is completed. In subsequent use, the raised arc-shaped surface design of the sealing ring 209 makes the bottom of the side-opening nozzle form a natural and smooth transition with the inner wall of the fiberglass membrane shell. The joints are more tightly fitted and the material distribution is more uniform. The arc-shaped sealing ring 209 is directly embedded in the inner wall of the membrane shell and works with the locking ring groove 214 to achieve stable accommodation. This eliminates the need for the deep recesses required in traditional designs, reducing the depth requirement of the recesses. At the same time, it completely eliminates the sharp corners at the bottom of deep recesses, allowing stress to be smoothly dispersed along the arc surface and avoiding stress concentration problems. Since deep recesses and a large amount of reinforcing material are not required, the outer diameter and volume of the membrane shell end can be reduced, achieving a significant weight reduction effect. This saves raw materials, improves economy, and enhances the convenience of transportation and installation. In addition, the side-opening nozzle body 205 adopts a streamlined gradually expanding conical opening 213 design, which further optimizes the water flow transition effect, avoids the eddies that are easily generated by right-angle transitions, ensures the smoothness of fluid flow, and helps the membrane separation system operate efficiently and stably.

[0028] In subsequent use of the fiberglass membrane shell body 1, when the fiberglass membrane shell body 1 needs to be disassembled, the rubber torsion ring 313 is turned. The rubber torsion ring 313 is fitted onto the tapered threaded ring 312, facilitating the turning of the tapered threaded ring 312 and providing cushioning protection for the operator's hands. The rubber torsion ring 313 drives the tapered threaded ring 312 to rotate, causing the tapered threaded ring 312 to engage and rotate on the tapered threaded ring 310 outside the pull rod 309. Because the tapered threaded ring 312 and the tapered threaded ring 310 are tapered, during rotation, the tapered threaded ring 312 gradually moves towards... As the sliding block 307 moves, the tapered threaded ring 312, being a fixed integral ring, causes the pulling rods 309 at various points to gradually engage and rotate, being limited by the tapered threaded ring 312 and moving inwards. Simultaneously, they converge towards the axis of the tapered threaded ring 312. At this time, the pulling rods 309 drive the sliding block 307 to move synchronously, causing the sliding block 307 to compress the compression springs 308. This causes the sliding block 307 to gradually disengage from the inner range of the snap ring groove 301. At this point, the end cap 303 is released from its limited state, allowing it to be pulled directly. After detaching from the fiberglass membrane shell body 1, in some cases, when the end cap 303 has a high degree of tightness with the inner wall of the fiberglass membrane shell body 1, through the above steps, when the tapered threaded ring 312 is screwed to the deepest point of the pulling rod 309, the tapered threaded ring 312 and the pulling rod 309 are limited and fixed. At this time, if the tapered threaded ring 312 is continued to be screwed, the tapered threaded ring 312 will transmit the force to the sliding block 307 through the pulling rod 309, and further transmit the force to the snap-fit ​​integrated plate 304 through the sliding block 307, so that the snap-fit ​​integrated plate 304 drives the threaded cylinder 314. As the threaded cylinder 314 rotates, the engagement with the inner threaded ring 302 gradually pulls the snap-fit ​​integrated plate 304 away from the interior of the fiberglass membrane shell body 1. When the tapered threaded ring 312 is limited between the pull rod 309, the pull rod 309 is in the position of sliding to the innermost side of the slide 306. At this time, the inner locking block 311 on the pull rod 309 slides into the locking groove 315. Thus, when the pull rod 309, the snap-fit ​​integrated plate 304 and the threaded cylinder 314 move outward, the end cover 303 is also moved outward, thereby completing the disassembly of the end cover 303.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fiberglass membrane shell, characterized in that: It includes a fiberglass membrane shell body (1) and a quick-release mechanism (3), wherein the quick-release mechanism (3) is located on the inner side of the fiberglass membrane shell body (1); The quick-release mechanism (3) includes a snap-fit ​​groove (301), which is located on the inner side of the fiberglass membrane shell body (1). An internal threaded ring (302) is located on another part of the inner side of the fiberglass membrane shell body (1). An end cap (303) is provided on the inner side of one end of the fiberglass membrane shell body (1). A snap-fit ​​integrated plate (304) is fitted onto the outer side of one end of the end cap (303). Multiple sliding grooves (305) are provided on the inner side of the snap-fit ​​integrated plate (304), and multiple sliding openings (306) are provided on the outer side of the snap-fit ​​integrated plate (304). The inner side of the slide groove (305) is slidably connected to a sliding block (307), and a pulling rod (309) is installed on the outer side of the sliding block (307). Two limiting strips (316) are installed on the inner side of the sliding block (307), and a compression spring (308) is provided on the inner side of each limiting strip (316). Multiple limiting holes (317) are opened on the inner side of the buckle integrated plate (304). A tapered threaded ring (310) is opened on the outer side of the pulling rod (309), and a tapered threaded ring (312) is sleeved on the outer side of the pulling rod (309).

2. The fiberglass membrane shell according to claim 1, characterized in that: Multiple sliding openings (306) and sliding grooves (305) are interconnected and correspond to each other. The pulling rod (309) slides on the inner side of the sliding opening (306), the limiting strip (316) slides on the inner side of the limiting hole (317), and the tapered threaded ring (312) is threadedly connected to the tapered threaded ring (310).

3. The fiberglass membrane shell according to claim 1, characterized in that: A rubber torsion ring (313) is installed on the outer side of the tapered threaded ring (312), and a threaded cylinder (314) is installed on the outer side of the snap-fit ​​integrated plate (304).

4. The fiberglass membrane shell according to claim 3, characterized in that: The threaded cylinder (314) is threadedly connected to the inner threaded ring (302). The outer side of the end cap (303) is provided with a locking groove (315). The bottom of the pulling rod (309) is provided with an inner locking block (311), which engages with the locking groove (315).

5. A bottom-side opening structure, applicable to a fiberglass membrane shell as described in any one of claims 1-4, characterized in that, The fiberglass membrane shell body (1) is provided with a side-opening mouth assembly structure (2) on the outside. The side-opening mouth assembly structure (2) includes a mouth socket (201) which is located on the outside of the fiberglass membrane shell body (1).

6. The bottom side-opening structure according to claim 5, characterized in that: The inner side of the mouth socket (201) is provided with a first sealing groove (202), and the inner side of the first sealing groove (202) is provided with a first sealing ring (203).

7. The bottom side-opening structure according to claim 5, characterized in that: A nut (204) is provided on the inner side of the mouth socket (201), and the first sealing ring (203) is installed at the bottom of the nut (204). A side opening mouth hole (212) is provided on the outer side of the fiberglass membrane shell body (1).

8. A bottom-side opening structure according to claim 6, characterized in that: The side opening hole (212) is provided with a side opening body (205) on the inner side, and an external thread ring (206) is provided on the outer side of the side opening body (205). A sealing ring (209) is provided at the bottom of the side opening body (205).

9. The bottom side-opening structure according to claim 1, characterized in that: The fiberglass membrane shell body (1) has a retaining ring groove (214) on its inner side. The external threaded ring (206) is threadedly connected to the nut (204). The sealing retaining ring (209) is located inside the retaining ring groove (214).

10. A bottom-side opening structure according to claim 8, characterized in that: The side-opening mouth body (205) has two second sealing grooves (207) on its outer side, and a second sealing ring (208) is fitted on the inner side of each of the two second sealing grooves (207). A third sealing groove (210) is opened on the top of the sealing ring (209), and a third sealing ring (211) is provided on the inner side of the third sealing groove (210). A streamlined gradually expanding cone opening (213) is opened on the inner side of the side-opening mouth body (205).

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