PVC-U modular siphoning type drainage system

Abstract

The utility model belongs to the technical field of drainage systems, and particularly relates to a PVC-U modular siphoning type drainage system which comprises an all-plastic siphoning type roof drain, a bent pipe assembly, a pipe body, an external connecting pipe and an expansion joint. And an expansion joint sealing ring is arranged between the expansion joint base and the expansion joint socket piece. Through the arrangement of the expansion joint, the vertical pipe inspection assembly, the external pipe and the bent pipe assembly, the disclosed drainage system is high in impact resistance, high in internal pressure resistance, good in weather resistance, safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of drainage system technology, specifically relating to a PVC-U modular siphon drainage system. Background Technology

[0002] Currently, PVC-U plastic pipes are commonly used in building rainwater drainage systems. However, due to the negative pressure in siphon drainage systems, when used in high-rise buildings, the pressure-bearing capacity of pipes and fittings is required to be high. Conventional PVC-U rainwater pipes and connecting fittings have insufficient pressure-bearing capacity and are prone to collapse and breakage under full-fill conditions.

[0003] Therefore, this utility model is proposed. Utility Model Content

[0004] To solve the technical problems existing in the prior art, this utility model provides a PVC-U modular siphon drainage system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A PVC-U modular siphon drainage system includes an all-plastic siphon rainwater hopper, a bend assembly, a pipe body, an external connecting pipe, and an expansion joint. The expansion joint includes an expansion joint base and an expansion joint support plug, and an expansion joint sealing ring is provided between the expansion joint support plug and the expansion joint base.

[0007] The expansion joint sealing ring has a sawtooth shape on the side close to the expansion joint bearing, and a U-shaped protrusion on the side close to the expansion joint base.

[0008] The pipe body is equipped with a riser inspection component.

[0009] The riser inspection assembly includes a riser inspection port body and a riser inspection port cover.

[0010] A riser inspection port rubber ring is provided between the riser inspection port body and the riser inspection port cover.

[0011] The riser inspection port cover adopts a concave structure.

[0012] The pipe bending assembly includes two 45° bends.

[0013] The number of expansion joints is set to several.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By setting expansion joints, riser inspection components, external pipes and bend components, this application makes the disclosed drainage system have high impact resistance, high internal pressure resistance and good weather resistance, and the drainage system is safe and reliable.

[0016] (2) This application only requires applying glue to the socket of the expansion joint socket assembly and the expansion joint base, and then assembling it onto the pipe body to complete the installation. Compared with the traditional expansion joint, which requires disassembling and assembling the expansion joint cover and manually adjusting the expansion allowance, it is more convenient and faster. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a PVC-U modular siphon drainage system according to the present invention;

[0018] Figure 2 This is a partial structural diagram of a PVC-U modular siphon drainage system according to this utility model. Figure 1 ;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0020] Figure 4 This is a partial structural diagram of a PVC-U modular siphon drainage system according to this utility model. Figure 2 ;

[0021] The following components are labeled: 1. All-plastic siphon rainwater hopper; 2. 45° bend; 3. Pipe body; 4. External connector; 5. Expansion joint; 6. Riser inspection assembly; 7. Expansion joint support insert; 8. Expansion joint sealing ring; 9. Expansion joint base; 10. Riser inspection port body; 11. Riser inspection port cover; 12. Riser inspection port rubber ring; 13. Serrated structure; 14. U-shaped protrusion structure. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.

[0024] like Figures 1-4 As shown, a PVC-U modular siphon drainage system includes an all-plastic siphon rainwater hopper 1, a bend assembly, a pipe body 3, an outer pipe 4, and an expansion joint 5. The expansion joint 5 includes an expansion joint base 9 and an expansion joint support 7, and an expansion joint sealing ring 8 is provided between the expansion joint support 7 and the expansion joint base 9.

[0025] The expansion joint sealing ring 8, close to the expansion joint bearing element 7, adopts a serrated structure 13 (3-5 serrations can be set), and the expansion joint sealing ring 8, close to the expansion joint base 9, adopts a U-shaped protrusion structure 14 (multiple U-shaped protrusions can be set) to achieve a high-pressure-bearing sealing effect. The pipe body 3 is equipped with a riser inspection assembly 6, which includes a riser inspection port body 10 and a riser inspection port cover 11; a riser inspection port rubber ring 12 is provided between the riser inspection port body 10 and the riser inspection port cover 11; the riser inspection port cover 11 adopts an inwardly concave structure, which provides high strength to withstand negative pressure under full-fill conditions. The bend assembly includes two 45° bends 2. The number of expansion joints 5 is varied, and the appropriate number of expansion joints 5 can be set according to construction requirements.

[0026] The PVC-U modular siphon drainage system disclosed in this application has a fully plastic siphon rainwater hopper 1 at the top, and then the pipe body 3 is connected to the external pipe 4 and the 45° bend 2. Due to thermal expansion and contraction, expansion joints should be installed in the system to retain expansion allowance, and an appropriate number of expansion joints 5 should be installed according to construction requirements. At the same time, a riser inspection assembly 6 should be installed on the pipe body 3 according to construction requirements.

[0027] Specifically, the expansion joint 5 disclosed in this application has a 20mm expansion allowance pre-installed at the factory. This means that the expansion joint support 7, expansion joint base 9, and expansion joint sealing ring 8 are fully assembled before leaving the factory, and a 20mm expansion allowance is pre-installed between the expansion joint support 7 and the expansion joint base 9. On-site installation only requires applying adhesive to the sockets of the expansion joint support 7 and the expansion joint base 9, and then assembling them onto the pipe body 3. Compared to traditional expansion joints that require disassembling and manually adjusting the expansion allowance, this saves a significant amount of time and is much more convenient and faster.

[0028] Furthermore, by incorporating expansion joints 5, riser inspection components 6, external pipe connections 4, and bend components, this application enables the disclosed drainage system to exhibit high impact resistance, high internal pressure resistance, and excellent weather resistance (density 1430 kg / m³, Vicat softening temperature 84.25℃, tensile strength 45.19 MPa, elongation at break 169%, longitudinal recovery rate 1.24%, impact resistance TIR < 10%; tensile strength retention rate 98%, color change grade 3). The drainage system is safe and reliable, meeting the requirements of a test pressure of 1.5 MPa at 20℃ with no leakage or rupture within 1 hour, thus conforming to all aspects of the requirements for circular reinforced pipes and fittings in standard QB / T2480.

[0029] The above content is a further detailed description of the technical solution provided in conjunction with the preferred embodiments of this patent. It should not be considered that the specific implementation of this utility model is limited to the above description. For those skilled in the art to which this patent pertains, several simple deductions or substitutions can be made without departing from the concept of this patent, and all of these should be considered to fall within the protection scope of this patent.

Claims

1. A PVC-U modular siphon drainage system, characterized in that: It includes an all-plastic siphon rainwater hopper, a bend assembly, a pipe body, an outer connecting pipe, and an expansion joint. The expansion joint includes an expansion joint base and an expansion joint support plug, and an expansion joint sealing ring is provided between the expansion joint support plug and the expansion joint base.

2. The PVC-U modular siphon drainage system as described in claim 1, characterized in that: The expansion joint sealing ring has a sawtooth shape on the side close to the expansion joint bearing, and a U-shaped protrusion on the side close to the expansion joint base.

3. The PVC-U modular siphon drainage system as described in claim 1, characterized in that: The pipe body is equipped with a riser inspection component.

4. The PVC-U modular siphon drainage system as described in claim 3, characterized in that: The riser inspection assembly includes a riser inspection port body and a riser inspection port cover.

5. A PVC-U modular siphon drainage system as described in claim 4, characterized in that: A riser inspection port rubber ring is provided between the riser inspection port body and the riser inspection port cover.

6. A PVC-U modular siphon drainage system as described in claim 4 or 5, characterized in that: The riser inspection port cover adopts a concave structure.

7. The PVC-U modular siphon drainage system as described in claim 1, characterized in that: The pipe bending assembly includes two 45° bends.

8. The PVC-U modular siphon drainage system as described in claim 1, characterized in that: The number of expansion joints is set to several.

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