A phosphogypsum reinforced composite pipe structure

Abstract

The utility model relates to a composite pipe structure technical field especially relates to a kind of phosphogypsum reinforced composite pipe structure.Its technical scheme includes pipe body, cone head, cone sleeve and air cock, the one end of pipe body is provided with cone head, the one end of pipe body away from cone head is provided with cone sleeve, annular groove one is arranged in the outer wall of cone head, spring one is arranged in the inner wall of annular groove one, rotating seat is arranged on the upper end of spring one, ball one is rotatably installed in the inner rotating seat upper end, positioning rod and positioning cylinder of sliding plug-in are arranged in the inside of spring one, the pipe body includes the base layer of phosphogypsum and fiber mixed layer, the inner wall of phosphogypsum and fiber mixed layer is provided with anticorrosive layer, the outer wall of phosphogypsum and fiber mixed layer is provided with wear layer.The utility model is through with the pipe body structure of phosphogypsum and fiber mixed layer as base layer, pipe body structure is docked by cone head and cone sleeve when using, and cone head is smoothly and low friction by ball lifting docking, so that pipe body docking is convenient.

Description

Technical Field

[0001] This utility model relates to the field of composite pipe structure technology, and in particular to a phosphogypsum reinforced composite pipe structure. Background Technology

[0002] Phosphogypsum-reinforced composite pipes utilize industrial by-product phosphogypsum as the main raw material. The modified phosphogypsum forms the matrix, typically accounting for 60%-80%. Its mechanical properties and water resistance are improved through curing agents and additives. Glass fiber, carbon fiber, or organic fibers (such as polypropylene fiber) are embedded in the phosphogypsum matrix to enhance tensile strength and impact resistance. The inner or outer walls may be coated with epoxy resin, polyurethane, etc., to enhance corrosion resistance and sealing. Because it utilizes industrial waste phosphogypsum, it reduces the environmental burden. Its density is lower than that of traditional metal pipes, its strength is close to that of concrete pipes, its resistance to acid and alkali media is better than that of metal pipes, and it is non-combustible and highly fire-resistant.

[0003] Phosphogypsum-reinforced composite pipes are fixed by plugging in with matching ports at both ends. When used for industrial waste liquid or ventilation ducts, the pipe structure is large, and the docking process is affected by the long structure of the pipe. It is not convenient to plug in the pipes during installation. Even with slight errors, effective docking cannot be achieved. Moreover, when subjected to large forces during docking, the docking surfaces are worn, affecting the use of the pipes. At the same time, the installation between phosphogypsum-reinforced composite pipes is not convenient. Therefore, we propose a phosphogypsum-reinforced composite pipe structure to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a phosphogypsum-reinforced composite pipe structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a phosphogypsum-reinforced composite pipe structure, comprising a pipe body, a cone head, a cone sleeve, and an air nozzle. The cone head is provided at one end of the pipe body, and the cone sleeve is provided at the end of the pipe body opposite to the cone head. An annular groove is formed on the outer wall of the cone head, and a spring is provided on the inner wall of the annular groove. A rotating seat is provided at the upper end of the spring, and a ball bearing is rotatably installed inside the upper end of the rotating seat.

[0006] Preferably, the pipe body includes a base layer of phosphogypsum and fiber mixture, with an anti-corrosion layer on the inner wall of the phosphogypsum and fiber mixture and a wear-resistant layer on the outer wall. The mixture of phosphogypsum and fiber, such as glass fiber, increases flexural strength, enabling it to withstand the lateral pressure of underground backfill soil. The random distribution of the fibers inhibits crack propagation, making the pipe less prone to brittleness under localized impact. The inner anti-corrosion layer, an epoxy resin coating, reduces water absorption, preventing the phosphogypsum from softening upon contact with water, making it suitable for damp soil or wastewater environments. The outer wear-resistant layer, made of polyurethane, resists sand and gravel friction, extending the pipe's service life in gravel strata.

[0007] Preferably, the spring has a slidingly inserted positioning rod and a positioning cylinder inside. The lower end of the positioning cylinder is connected to the annular groove, and the upper end of the positioning rod is connected to the rotating seat. The addition of the positioning rod and positioning cylinder inside the spring forms a slidingly inserted structure. The cooperation between the positioning rod and the positioning cylinder restricts the lateral displacement of the spring, ensuring improved alignment when the cone head is inserted into the cone sleeve, reducing installation deviation. In a vibration environment, it prevents the ball bearing from dislodging due to spring oscillation. The slidingly inserted structure distributes the radial stress of the spring, preventing fatigue fracture after long-term compression and extending its lifespan. The positioning rod can be made of stainless steel, which has better corrosion resistance than ordinary carbon steel springs.

[0008] Preferably, the inner wall of the conical sleeve has a second annular groove, and a sealing ring is disposed inside the second annular groove. The sealing ring is made of nitrile rubber, which can maintain zero leakage under water pressure of 0.3-0.5MPa, making it suitable for pressure drainage systems. The depth of the second annular groove is designed to be 1.5 times the compression of the sealing ring, ensuring the reliability of the interference fit. The elastic deformation of the sealing ring can absorb the displacement caused by thermal expansion and contraction of the pipe body or foundation settlement. Compared with rigid adhesive bonding, only the sealing ring needs to be replaced during maintenance, reducing costs.

[0009] Preferably, the inner wall of the second annular groove is provided with an air bladder that fits onto the outside of the sealing ring. After the air bladder is inflated, it can actively press the sealing ring, thereby increasing the sealing contact pressure. This is especially suitable for pumping and drainage systems under pulsating pressure conditions, preventing instantaneous high pressure from causing seal failure. When the pipeline undergoes slight displacement due to temperature changes or vibration, the elastic deformation of the air bladder can compensate for the wear of the sealing ring.

[0010] Preferably, one end of the airbag is provided with an air tube, and one end of the air tube is provided with an air nozzle. The inner wall of the air nozzle is provided with a support ring and a valve ring. A second spring is provided at the upper end of the support ring, and a valve core with a conical outer wall is provided at the upper end of the second spring, located inside the support ring. The airbag connects the air tube and the air nozzle. The air nozzle is provided with a sealing structure consisting of a second spring, a conical valve core, and a valve ring. After docking, the tube inflates the airbag while preventing gas from flowing out backward.

[0011] Preferably, the valve ring has a sealing gasket on its inner wall, and the cone sleeve has a hidden groove on its outer wall, with the air nozzle located inside the hidden groove. The air nozzle is built into and hidden within the hidden groove on the outer wall of the cone sleeve. The hidden groove embeds the air nozzle into the pipe body, preventing damage from mechanical collisions during construction, reducing the breakage rate during field installation. The depth of the hidden groove matches the outer diameter of the air nozzle, ensuring no interference when the pipe is stacked or dragged. The hidden design keeps the outer wall of the pipe smooth, facilitating the application of markings or anti-corrosion coatings.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The two ends of the pipe body of this utility model are connected by a cone head and a cone sleeve. The cone head and cone sleeve play a guiding role during the connection process. At the same time, during the connection, the balls distributed in a ring array on the outer wall of the cone head roll and rub against the cone sleeve, reducing resistance and wear, and improving the smoothness of the connection process. The balls are also elastically supported inside the side of the cone head. When compressed, they will contract. When the cone head and cone sleeve are connected to the limit, the spring is compressed, causing the balls to retract completely into the cone head, preventing the guiding structure from affecting the connection seal. At the same time, the elastically supported balls provide compensation for small angular deviations during the connection process, improving the convenience of the connection process and reducing the risk of pipe connection wear affecting use. Attached Figure Description

[0014] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the main sectional three-dimensional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the cone head of this utility model in a main cross-section.

[0018] Figure 5 This is a three-dimensional structural schematic diagram of the main cross-section of the trachea of ​​this utility model.

[0019] Reference numerals in the attached drawings: 1. Pipe body; 2. Cone head; 3. Cone sleeve; 4. Hidden groove; 5. Ring groove one; 6. Spring one; 7. Rotating seat; 8. Ball bearing; 9. Positioning rod; 10. Positioning cylinder; 11. Anti-corrosion layer; 12. Phosphogypsum and fiber mixed layer; 13. Wear-resistant layer; 14. Air nozzle; 15. Valve core; 16. Valve ring; 17. Sealing gasket; 18. Spring two; 19. Support ring; 20. Air pipe; 21. Ring groove two; 22. Air bladder; 23. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-5As shown, the present invention proposes a phosphogypsum-reinforced composite pipe structure, including a pipe body 1, a cone head 2, a cone sleeve 3 and an air nozzle 14. The cone head 2 is provided at one end of the pipe body 1, and the cone sleeve 3 is provided at the end of the pipe body 1 away from the cone head 2. An annular groove 5 is formed on the outer wall of the cone head 2. A spring 6 is provided on the inner wall of the annular groove 5. A rotating seat 7 is provided on the upper end of the spring 6. A ball bearing 8 is rotatably installed inside the upper end of the rotating seat 7.

[0022] The pipe body 1 includes a base layer of phosphogypsum and fiber mixed layer 12, the inner wall of the phosphogypsum and fiber mixed layer 12 is provided with an anti-corrosion layer 11, and the outer wall of the phosphogypsum and fiber mixed layer 12 is provided with a wear-resistant layer 13.

[0023] The spring 6 has a slidingly inserted positioning rod 9 and a positioning cylinder 10 inside. The lower end of the positioning cylinder 10 is connected to the annular groove 5, and the upper end of the positioning rod 9 is connected to the rotating seat 7.

[0024] The inner wall of the cone sleeve 3 is provided with an annular groove 21, and a sealing ring 23 is provided inside the annular groove 21;

[0025] An airbag 22 is provided on the inner wall of the annular groove 21 and is fitted to the outside of the sealing ring 23;

[0026] An air tube 20 is provided at one end of the airbag 22, and an air nozzle 14 is provided at the other end of the air tube 20. A support ring 19 and a valve ring 16 are provided on the inner wall of the air nozzle 14. A second spring 18 is provided at the upper end of the support ring 19, and a valve core 15 located inside the support ring 19 with a conical outer wall is provided at the upper end of the second spring 18.

[0027] A sealing gasket 17 is provided on the inner wall of the valve ring 16, and a hidden groove 4 is provided on the outer wall of the cone sleeve 3, with the air nozzle 14 located inside the hidden groove 4.

[0028] Based on the implementation steps of Example 1: For scenarios requiring high-pressure sealing, an air pump is connected through the air nozzle 14 in the hidden groove 4 to pre-inflate the air bag 22 to 0.2-0.3MPa. The specific pressure is adjusted according to the medium pressure. The cone 2 of the tube body 1 to be connected is aligned with the cone sleeve 3 of the other tube body 1. The inclined structure of the cone 2 is used to guide the insertion naturally. Through the elastic compensation of the ball bearing 8, the ball bearing 8 on the outer wall of the cone 2 rolls and rubs when it contacts the inner wall of the cone sleeve 3, reducing the insertion resistance. If there is a slight angular deviation, the ball bearing 8 is compressed and then retracts through the spring 6 to automatically adjust its position, avoiding wear of the tube end caused by hard collision.

[0029] Continue pushing the tube body 1 until the cone head 2 and the cone sleeve 3 are completely in contact. At this time, the ball 8 is completely pressed into the annular groove 5, and the spring 6 is in a compressed state to ensure that the ball 8 does not interfere with the sealing surface. The double seal of the sealing ring 23 and the air bag 22, the sealing ring 23 in the annular groove 21 forms a static seal under the interference fit. After the air bag 22 is inflated, it further presses the sealing ring 23, dynamically increasing the contact pressure to adapt to the displacement caused by pulsating pressure or foundation settlement.

[0030] The rolling friction of ball 8 is reduced, and the combination of spring 6 with positioning rod 9 and positioning cylinder 10 prevents lateral displacement, thus compensating for installation deviation. When deviation occurs, it is automatically guided and corrected by ball 8, solving the problem of traditional large-diameter pipe docking requiring hoisting and fine adjustment. The compression stroke of spring 6 provides tolerance space for construction errors, which is especially suitable for non-rigid alignment when laying long underground pipes. The contact pressure of sealing ring 23 can be dynamically adjusted according to working conditions, and the sealing life is extended in vibration environments such as near pump stations.

[0031] The concealed groove 4 completely encloses the air nozzle 14, preventing accidental damage from construction machinery such as excavators, significantly improving its applicability in the field. Easily damaged parts such as the sealing ring 23 and air bag 22 can be replaced individually. Through the guidance of the ball bearing 8 and elastic compensation, the angular deviation and frictional resistance during the insertion of long pipes are eliminated, improving installation efficiency. The double seal of the sealing ring 23 and air bag 22 adapts to pressure fluctuations of 0-0.6MPa, solving the leakage risk in the transportation of chemical waste liquid. The concealed air nozzle 14 and wear-resistant layer 13 design make the pipeline suitable for high-corrosion and high-wear scenarios such as mines and coastal areas, realizing convenient installation, long-term sealing, and reduced maintenance costs for phosphogypsum composite pipes.

[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A phosphogypsum-reinforced composite pipe structure, comprising a pipe body (1), a cone head (2), a cone sleeve (3), and an air nozzle (14), wherein the pipe body (1) is provided with a cone head (2) at one end, characterized in that: The tube body (1) is provided with a cone sleeve (3) at the end opposite to the cone head (2). The outer wall of the cone head (2) is provided with an annular groove (5). The inner wall of the annular groove (5) is provided with a spring (6). The upper end of the spring (6) is provided with a rotating seat (7). The upper end of the rotating seat (7) is rotatably installed with a ball (8).

2. The phosphogypsum-reinforced composite pipe structure according to claim 1, characterized in that: The tube body (1) includes a base layer of phosphogypsum and fiber mixed layer (12), the inner wall of the phosphogypsum and fiber mixed layer (12) is provided with an anti-corrosion layer (11), and the outer wall of the phosphogypsum and fiber mixed layer (12) is provided with a wear-resistant layer (13).

3. The phosphogypsum-reinforced composite pipe structure according to claim 1, characterized in that: The spring (6) is provided with a slidingly inserted positioning rod (9) and a positioning cylinder (10). The lower end of the positioning cylinder (10) is connected to the annular groove (5), and the upper end of the positioning rod (9) is connected to the rotating seat (7).

4. The phosphogypsum-reinforced composite pipe structure according to claim 1, characterized in that: The inner wall of the cone sleeve (3) is provided with an annular groove (21), and a sealing ring (23) is provided inside the annular groove (21).

5. The phosphogypsum-reinforced composite pipe structure according to claim 4, characterized in that: The inner wall of the second annular groove (21) is provided with an airbag (22) that is sleeved on the outside of the sealing ring (23).

6. The phosphogypsum-reinforced composite pipe structure according to claim 5, characterized in that: One end of the airbag (22) is provided with an air tube (20), and one end of the air tube (20) is provided with an air nozzle (14). The inner wall of the air nozzle (14) is provided with a support ring (19) and a valve ring (16). The upper end of the support ring (19) is provided with a second spring (18), and the upper end of the second spring (18) is provided with a valve core (15) located inside the support ring (19) and having a conical outer wall.

7. The phosphogypsum-reinforced composite pipe structure according to claim 6, characterized in that: The valve ring (16) has a sealing gasket (17) on its inner wall, and the cone sleeve (3) has a hidden groove (4) on its outer wall. The air nozzle (14) is located inside the hidden groove (4).

Images