A prestressed self-locking connection structure for a circular sewage tank

Abstract

The utility model discloses a prestressed self-locking connection structure for a circular sewage pool, belonging to the technical field of sewage pools, and solves the problem that the existing sewage pools are prone to sewage leakage; it includes multiple arc-shaped wall panels for splicing the wall surface of the sewage pool. Oblique grooves are provided on the inner wall surfaces on both sides of each arc-shaped wall panel. The adjacent surfaces formed by two adjacent oblique grooves are in a "ji" shape. A plurality of tapered threaded sleeves are symmetrically embedded on both sides of each adjacent surface. The large-diameter ends of two symmetric tapered threaded sleeves are threadedly connected by a double-headed screw. The utility model can simultaneously pre-tighten the two tapered sleeves through the double-headed screw, providing a sealing pressure for the joint between two adjacent arc-shaped wall panels. The "ji" shape adjacent surface design promotes water pressure self-adaptation, realizes the effective utilization of circumferential water pressure, makes the double-headed screw self-lock under high water pressure, further improves the sealing pressure at the joint of the arc-shaped wall panels, and ensures the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage pools, and particularly relates to a prestressed self-locking connection structure for a circular sewage pool. Background Technique

[0002] Due to the excessive heavy metals and other pollutants contained in domestic sewage and industrial wastewater, it cannot be directly discharged into existing rivers. It needs to be scientifically treated to meet the standards before discharge. Multiple large concrete sewage pools with different functions are required in the treatment process.

[0003] Most of the sewage pools in the prior art are built by cast-in-place concrete. Since the sewage treatment plant needs to treat a large amount of sewage every day, the sewage pool generally has a large volume. Cast-in-place concrete construction is likely to cause the concrete poured in layers to be not tightly combined, and sewage is likely to leak under high water pressure in the later stage. Content of the Utility Model

[0004] In view of the above problems in the prior art, the utility model provides a prestressed self-locking connection structure for a circular sewage pool, which solves the problem of easy sewage leakage in the existing sewage pool.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: Provide a prestressed self-locking connection structure for a circular sewage pool, including multiple arc-shaped wall panels for splicing the wall surface of the sewage pool. Oblique grooves are provided on the inner wall surfaces on both sides of each arc-shaped wall panel. The adjacent surfaces formed by adjacent two oblique grooves are in a "ji" shape. Multiple tapered threaded sleeves are symmetrically embedded on both sides of each adjacent surface. The large-diameter ends of two symmetrically arranged tapered threaded sleeves are threadedly connected by a double-headed screw.

[0006] In this scheme, the simultaneous pre-tightening of two tapered sleeves can be achieved through the double-headed screw, providing a sealing pressure for the joint between two adjacent arc-shaped wall panels. The "ji" shape adjacent surface design promotes water pressure self-adaptation. During the installation stage, the double-headed screw provides tension as a tie rod; during the operation stage, the circumferential pressure of the sewage pool water body on the arc-shaped wall panel changes with the water depth. Since the arc-shaped wall panel is spliced, once the water depth is too large, a large water pressure will be generated. The large water pressure will push the arc-shaped wall panel to have a small angular displacement at the joint. At this time, since the double-headed screw is installed inside the pool wall, the double-headed screw will change from a "tie rod" to a "compression rod", which will cause the tapered surface of the tapered threaded sleeve to be pressed deeper into the arc-shaped wall panel, the pressure at the joint is greater, and the sealing effect is better. The effective utilization of the circumferential water pressure is realized, and the double-headed screw "self-locks" under high water pressure, further enhancing the sealing pressure at the joint of the arc-shaped wall panel, and solving the problem that the joints between the upper and lower layers of the pool wall are not tightly compacted and prone to leakage due to the use of cast-in-place concrete in the existing sewage pool.

[0007] Furthermore, a rubber waterstop is installed between the connecting surfaces of two adjacent curved wall panels. The installation of the rubber waterstop further ensures the sealing performance.

[0008] Furthermore, each curved wall panel has mounting grooves on both sides for installing rubber waterstops. The rubber waterstops are embedded in the mounting grooves and fixed with adhesive. The adhesive bonding ensures the fixing strength of the rubber waterstops.

[0009] Furthermore, the number of curved wall panels is 4. The use of 4 curved wall panels balances ease of transport and speed of on-site assembly, avoiding the problem of too many panels increasing seam leaks or too few panels resulting in excessively large sizes that are difficult to prefabricate. Furthermore, each curved panel has at least three tapered threaded sleeves on both sides. These at least three tapered threaded sleeves ensure sufficient preload distribution, providing uniform pressure at each joint and preventing single-point overload failure.

[0010] Furthermore, multiple tapered threaded sleeves are evenly distributed vertically on both sides of each arc-shaped wall panel. The even distribution of the tapered threaded sleeves optimizes force transmission, balances the influence of circumferential water pressure, and reduces stress concentration points.

[0011] Furthermore, the taper of each tapered threaded sleeve is 5° to 15°. The taper of 5° to 15° facilitates the balance of preload and self-locking effect.

[0012] Furthermore, each double-ended screw has a hexagonal prism-shaped tightening element in the middle. The tightening element facilitates tightening the double-ended screw.

[0013] Furthermore, the adhesive is an epoxy resin adhesive, an acrylic adhesive, or a silicone adhesive. Epoxy resin adhesives are corrosion-resistant, acrylic adhesives are fast-drying, and silicone adhesives are heat-resistant, covering various wastewater conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the arc-shaped wall panel. Figure 2 This is a schematic diagram of a double-ended screw. Figure 3 This is a schematic diagram of the installation of rubber waterstops; Figure 4 This is a schematic diagram showing the connection between a double-ended screw and a tapered threaded sleeve. Figure 5 This is a force diagram of the curved wall panel during the installation phase; Figure 6 This is a stress diagram of the curved wall panel during the operation phase; The components include: 1. curved wall panel; 2. double-ended screw; 3. tapered threaded sleeve; and 4. rubber waterstop. Detailed Implementation

[0015] The specific embodiments of the present utility model will be described below to facilitate the understanding of those skilled in the art of this technical field. However, it should be clear that the present utility model is not limited to the scope of the specific embodiments. For those ordinary skilled in the art of this technical field, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present utility model are within the scope of protection.

[0016] This embodiment provides a prestressed self-locking connection structure for a circular sewage tank, which is used to solve the problem that the joints between the upper and lower layers of the tank wall are not dense and prone to leakage due to the use of cast-in-place concrete in the existing sewage tank. The following is a specific introduction to it.

[0017] Refer to Figure 1 , a prestressed self-locking connection structure for a circular sewage tank, includes 4 arc-shaped wall panels 1, and the 4 arc-shaped wall panels 1 are used to splice the wall surface of the sewage tank.

[0018] Refer to Figure 2 and Figure 3 , inclined grooves are provided on the inner wall surfaces on both sides of each arc-shaped wall panel 1, and the adjacent surfaces formed by two adjacent inclined grooves are in a "zigzag" shape. A plurality of tapered threaded sleeves 3 are symmetrically embedded on both sides of each adjacent surface. Preferably, the taper of each tapered threaded sleeve 3 is 5° - 15°. A taper of 5° - 15° is convenient for balancing the pre-tightening force and the self-locking effect.

[0019] Refer to Figure 4 , the large-diameter ends between two symmetric tapered threaded sleeves 3 are threadedly connected by a double-headed screw 2. A tightening member in the shape of a hexagonal prism structure is provided in the middle of each double-headed screw 2, and the setting of the tightening member is convenient for tightening the double-headed screw 2.

[0020] In this embodiment, the number of tapered threaded sleeves 3 on both sides of each arc-shaped wall panel 1 is at least 3. At least 3 tapered threaded sleeves 3 ensure sufficient distribution of the pre-tightening force, and each joint point obtains uniform pressure, avoiding single-point overload failure. The plurality of tapered threaded sleeves 3 on both sides of each arc-shaped wall panel 1 are evenly distributed in the vertical direction. The uniform distribution of the tapered threaded sleeves 3 optimizes the force transmission, balances the influence of the circumferential water pressure, and reduces the stress concentration points.

[0021] In order to further ensure the sealing performance, a rubber water stop 4 is provided between the connection surfaces of two adjacent arc-shaped wall panels 1. Specifically, installation grooves for installing the rubber water stop 4 are provided on the side wall surfaces of each arc-shaped wall panel 1, and the rubber water stop is embedded in the installation groove and fixedly bonded by glue. The glue bonding ensures the fixing strength of the rubber water stop 4.

[0022] In this embodiment, the glue can be an epoxy resin adhesive, an acrylate adhesive or a silicone adhesive. The epoxy resin adhesive is corrosion-resistant, the acrylate adhesive dries quickly, and the silicone adhesive is high-temperature resistant, covering different sewage conditions.

[0023] The beneficial effects of this solution are as follows: 1. By means of the double-headed screw 2, the simultaneous pre-tightening of the two tapered sleeves can be achieved, providing sealing pressure at the joint between two adjacent arc-shaped wall panels 1.

[0024] 2. The "zigzag" adjacent surface design promotes water pressure self-adaptation.

[0025] Specifically, referring to Figure 5 , during the installation stage, the double-headed screw 2 provides tensile force as a tie rod; referring to Figure 6 , during the operation stage, the circumferential pressure of the sewage pool water body on the arc-shaped wall panel 1 changes with the water depth. Since the arc-shaped wall panel 1 is spliced, once the water depth is too large, a large water pressure will be generated. The large water pressure P will push the arc-shaped wall panel 1 to have a small angular displacement θ at the joint. At this time, because the double-headed screw 2 is installed inside the pool wall, the double-headed screw 2 will change from a "tie rod" to a "compression rod", which will cause the tapered surface of the tapered threaded sleeve 3 to press deeper into the arc-shaped wall panel 1, the pressure at the joint is greater, and the sealing effect is better, realizing the effective utilization of the circumferential water pressure, making the double-headed screw 2 "self-lock" under high water pressure, and further improving the sealing pressure at the joint of the arc-shaped wall panel 1.

[0026] Although the specific implementation mode of the utility model has been described in detail in combination with the drawings, it should not be understood as a limitation on the protection scope of this solution. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative work still belong to the protection scope of this solution.

Claims

1. A prestressed self-locking connection structure for circular sewage tanks, characterized in that, It includes multiple arc-shaped wall panels (1) for splicing the wall surface of a sewage tank. Oblique grooves are provided on the inner wall surfaces on both sides of each arc-shaped wall panel (1). The adjacent surfaces formed by two adjacent oblique grooves are in a "ji" shape. A plurality of tapered threaded sleeves (3) are symmetrically embedded on both sides of each adjacent surface. The large-diameter ends of two symmetric tapered threaded sleeves (3) are threadedly connected by a double-headed screw (2).

2. The prestressed self-locking connection structure according to claim 1, characterized in that A rubber waterstop (4) is provided between the connection surfaces of two adjacent arc-shaped wall panels (1).

3. The prestressed self-locking connection structure according to claim 2, characterized in that Installation grooves for installing the rubber waterstop (4) are provided on the wall surfaces on both sides of each arc-shaped wall panel (1). The rubber waterstop (4) is embedded in the installation grooves and fixedly bonded by glue.

4. The pre-stressed self-locking connection structure according to claim 1, characterized in that, The number of the arc-shaped wall panels (1) is 4.

5. The pre-stressed self-locking connection structure according to claim 1, wherein, The number of tapered threaded sleeves (3) on both sides of each arc-shaped wall panel (1) is at least 3.

6. The pre-stressed self-locking connection structure according to claim 1, wherein, The multiple tapered threaded sleeves (3) on both sides of each arc-shaped wall panel (1) are evenly distributed in the vertical direction.

7. The pre-stressed self-locking connection structure according to claim 1, wherein, The taper of each tapered threaded sleeve (3) is 5° - 15°.

8. The pre-stressed self-locking connection structure according to claim 1, wherein, A tightening member in the shape of a hexagonal prism structure is provided in the middle of each double-headed screw (2).

9. The pre-stressed self-locking connection structure according to claim 3, wherein, The glue is epoxy resin adhesive, acrylate adhesive or silicone adhesive.

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