Modular prefabricated PVC drainage observation well for drainage blind drain

CN224931155UActive Publication Date: 2026-11-03CHENGDU SHUYU TONGTU NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202522468175.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-20
Publication Date
2026-11-03
Estimated Expiration
2035-11-20

AI Technical Summary

Technical Problem

The existing on-site construction methods for drainage observation wells are easily affected by environmental conditions, have long construction periods, and are difficult to adjust flexibly, failing to meet the needs of special site conditions.

Method used

The well body adopts modular splicing components, combining pressure-resistant reinforcement structure, anti-buoyancy anchoring structure and connection structure, including annular reinforcing ribs, vertical reinforcing ribs, anchoring wings and flexible connecting pipes, to achieve efficient splicing and stable connection of the well body.

Benefits of technology

It improves construction efficiency and flexibility, enhances the well body's resistance to pressure and buoyancy, ensures convenient connection and sealing with drainage blind pipes, and adapts to complex environments.

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Abstract

The application discloses a modular prefabricated PVC drainage observation well of a drainage blind ditch, relates to the technical field of construction drainage facilities, and comprises a modularly spliced well body assembly, a compression-resistant reinforcing structure arranged on the outer wall of the well body assembly, and a floating-resistant anchoring structure arranged at the bottom of the well body assembly, and the well body assembly is provided with a connecting structure for connecting a drainage blind pipe. The modularly spliced well body assembly can realize high-efficiency and short-period construction, improve construction efficiency, and is convenient for flexible adjustment according to actual conditions.
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Description

Technical Field

[0001] This application relates to the technical field of construction drainage facilities, and in particular to a modular prefabricated PVC drainage observation well for a drainage blind ditch. Background Technology

[0002] In the field of drainage engineering, drainage observation wells are an important infrastructure, playing a crucial role in the normal operation and maintenance of drainage systems. Currently, the conventional practice for constructing drainage observation wells is to first excavate the pit and then complete the entire observation well by pouring concrete.

[0003] However, this on-site construction method is easily affected by environmental conditions during actual construction, such as severe weather and complex geological conditions, thus increasing the construction period. Furthermore, the construction process requires first installing the drainage blind pipes, and then making pre-reserved positions based on the location of the drainage blind pipes to ensure a proper connection between the drainage blind pipes and the observation wells to achieve the drainage function. This results in a lack of flexibility in adjusting to actual conditions, making it difficult to meet practical needs when facing special site conditions. Utility Model Content

[0004] To address the problems existing in the prior art, this application provides a modular prefabricated PVC drainage observation well for drainage blind ditches.

[0005] This application provides a modular prefabricated PVC drainage observation well for a drainage blind ditch, which adopts the following technical solution: A modular prefabricated PVC drainage observation well for a drainage blind ditch includes a modularly spliced ​​well body assembly, a compressive strengthening structure disposed on the outer wall of the well body assembly, and an anti-buoyancy anchoring structure disposed at the bottom of the well body assembly. The well body assembly is provided with a connecting structure for connecting a drainage blind pipe.

[0006] Optionally, the well body assembly includes a bottom plate, a top frame, and a plurality of well walls that are sequentially spliced ​​together. The well walls are fixedly connected to the bottom plate by bolts. The bottom wall of the top frame is provided with an annular groove along the circumference of the top frame, and the top frame is fitted onto the top of each well wall through the annular groove. The top frame is fixed to each well wall by bolts.

[0007] Optionally, the top wall of the base plate is provided with an annular groove along the circumference of the base plate. The annular groove is adapted to the well wall and is used for the well wall to be inserted.

[0008] Optionally, a first locking strip and a second locking strip are respectively provided on both sides of the well wall along the height direction of the well wall, and the first locking strip and the second locking strip of adjacent well walls are interlocked with each other.

[0009] Optionally, waterproof sealant is provided at the joints between adjacent well walls and at the joints between the well wall and the bottom plate.

[0010] Optionally, the compressive strengthening structure includes a plurality of annular reinforcing ribs arranged along the height direction of the well body assembly, and a plurality of vertical reinforcing ribs arranged along the circumferential direction of the outer wall of the well body assembly. The vertical reinforcing ribs and the annular reinforcing ribs are tied and fixed together to form a grid structure.

[0011] Optionally, the anti-buoyancy anchoring structure includes an anchoring wing disposed on the outer side of the bottom of the well body assembly and arranged circumferentially along the well body assembly.

[0012] Optionally, the bottom surface of the anchoring wing is provided with several limiting grooves distributed circumferentially along the well body assembly.

[0013] Optionally, the connection structure includes a first connecting pipe, a second connecting pipe, and a flexible connecting pipe. The flexible connecting pipe is disposed between the first connecting pipe and the second connecting pipe and communicates with the first connecting pipe and the second connecting pipe respectively. Both the first connecting pipe and the second connecting pipe are provided with connecting flanges. The side wall of the well body assembly is provided with a connection port. The side wall of the well body assembly is provided with a mounting flange along the circumference of the connection port. The first connecting pipe passes through the connection port, and the connecting flange and the mounting flange are fixed by bolts.

[0014] Optionally, the connection structure further includes a sealing ring. The side wall of the mounting flange is provided with a first annular sealing groove along the circumference of the connection port, and the end face of the connecting flange is provided with a second annular sealing groove along the circumference of the connecting flange. Both the first and second annular sealing grooves are adapted to the sealing ring and are used for the sealing ring to be inserted.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. This application enables high-efficiency and short-term construction through modularly assembled well components, improving construction efficiency and facilitating flexible adjustments based on actual conditions; the compressive strengthening structure enhances the well components' resistance to earth pressure and compressive loads; the anti-buoyancy anchoring structure prevents the well components from floating; and the connection structure for connecting the drainage blind pipe allows for better connection between the drainage observation well and the drainage blind pipe.

[0016] 2. This application uses anchoring wings set on the outer side of the bottom of the well assembly and distributed circumferentially to prevent the well assembly from floating during backfilling by relying on the weight of the soil or the bottom ballast concrete.

[0017] 3. In the connection structure of this application, the first connecting pipe and the second connecting pipe are connected by a flexible connecting pipe. The first connecting pipe is fixed to the mounting flange on the side wall of the well assembly by bolts through the connecting flange. The second connecting pipe can be adjusted in angle through the flexible connecting pipe and connected to the drainage blind pipe, making it more convenient to connect the drainage observation well and the drainage blind pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application; Figure 3 This is a schematic diagram illustrating the structure of the well wall in an embodiment of this application; Figure 4 yes Figure 2 An enlarged view of section A.

[0019] Explanation of reference numerals in the attached drawings: 1. Well body assembly; 11. Base plate; 111. Annular groove; 12. Top frame; 121. Annular slot; 13. Well wall; 131. First snap-fit ​​strip; 132. Second snap-fit ​​strip; 14. Connection port; 15. Mounting flange; 151. First annular sealing groove; 2. Compression-resistant reinforcement structure; 21. Annular reinforcing rib; 22. Vertical reinforcing rib; 3. Anti-buoyancy anchoring structure; 31. Anchoring wing; 311. Limiting groove; 4. Connection structure; 41. First connecting pipe; 42. Second connecting pipe; 43. Flexible connecting pipe; 44. Connecting flange; 441. Second annular sealing groove; 45. Sealing ring. Detailed Implementation

[0020] The following will be combined with the appendix Figure 1-4 The technical solutions in the embodiments of this utility model are described in further detail below. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0021] This application mainly adopts modular splicing well body with reinforcement and anchoring structure, which achieves the effect of improving construction efficiency, flexibility and stability. The following is a further detailed description of this application.

[0022] This application discloses a modular prefabricated PVC drainage observation well for a drainage blind ditch. (Refer to...) Figure 1The system includes a modularly assembled well body component 1, a compressive strength reinforcement structure 2 installed on the outer wall of the well body component 1, and an anti-buoyancy anchoring structure 3 installed at the bottom of the well body component 1. The well body component 1 is equipped with a connecting structure 4 for connecting to the drainage blind pipe. The well body component 1 is modularly assembled, which facilitates transportation and on-site installation. The compressive strength reinforcement structure 2 enhances the well body's resistance to soil pressure and compressive load. The anti-buoyancy anchoring structure 3 prevents the well body from floating. The connecting structure 4 can better connect with the drainage blind pipe, achieving the beneficial effects of improving construction efficiency, enhancing well body performance, and improving construction flexibility.

[0023] Reference Figure 1 , 2 Specifically, the well body assembly 1 includes a base plate 11, a top frame 12, and several well walls 13 assembled sequentially. The base plate 11 is the foundation of the entire well body assembly 1. Its top wall has an annular groove 111 along its circumference. This annular groove 111 is adapted to fit into the well wall 13, allowing the well wall 13 to be inserted. This design can initially locate the installation position of the well wall 13. The base plate 11 is usually made of PVC material, which has a certain strength and corrosion resistance. In some special environments, a metal base plate 11 with anti-corrosion treatment can also be used as a replacement feature. The well wall 13 is fixedly connected to the base plate 11 by bolts. During installation, the well wall 13 is first inserted into the annular groove 111, and then further fixed by bolts to ensure the stability of the connection.

[0024] Reference Figure 3 A first locking strip 131 and a second locking strip 132 are respectively provided on both sides of the well wall 13 along its height direction. The first locking strip 131 and the second locking strip 132 of adjacent well walls 13 interlock with each other. The first locking strip 131 and the second locking strip 132 can be fitted together in the form of protrusions and grooves, which makes the connection between adjacent well walls 13 tighter. The well wall 13 is also made of PVC material, and its thickness and hardness are designed according to actual use requirements. Fiberglass reinforced plastic well wall 13 can also be used as an alternative feature, which has higher strength and better corrosion resistance.

[0025] Waterproof sealant is applied to the joints between adjacent well walls 13, as well as the joints between well wall 13 and the base plate 11. This sealant prevents groundwater from seeping into the well body, ensuring its normal use. Common waterproof sealants include silicone sealant and polyurethane sealant, which have good waterproof and adhesive properties.

[0026] Reference Figure 4The bottom wall of the top frame 12 has an annular groove 121 along its circumference. The top frame 12 is fitted onto the top of each well wall 13 through the annular groove 121, and the top frame 12 is fixed to each well wall 13 with bolts. The top frame 12 protects and seals the top of the well, preventing debris from falling into the well and enhancing the overall stability of the well. The top frame 12 is also made of PVC material, and its shape and size are designed according to the specifications of the well wall 13. In some special cases, a metal top frame 12 can also be used, which has higher strength and durability.

[0027] This design of well body component 1 ensures a tight and secure connection between its various parts. Initial positioning and connection are achieved through the cooperation of the annular groove 111 and the snap-fit ​​strip, followed by further fixation with bolts to ensure reliable connection. The use of waterproof sealant guarantees the well body's waterproof performance, preventing groundwater seepage.

[0028] Reference Figure 1 Specifically, the compressive strength reinforcement structure 2 includes multiple annular reinforcing ribs 21 arranged along the height direction of the well body assembly 1, and multiple vertical reinforcing ribs 22 arranged circumferentially along the outer wall of the well body assembly 1. The vertical reinforcing ribs 22 are tied and fixed to the annular reinforcing ribs 21, forming a grid structure. The annular reinforcing ribs 21 and the vertical reinforcing ribs 22 are usually made of steel, which has high strength and toughness. In some special cases, carbon fiber reinforcing ribs can also be used as an alternative feature, which has the advantages of light weight and high strength. The annular reinforcing ribs 21 can enhance the circumferential compressive strength of the well body, while the vertical reinforcing ribs 22 can enhance the vertical compressive strength of the well body. The grid structure formed by the two can effectively disperse the pressure borne by the well body and improve the overall compressive strength performance of the well body.

[0029] Reference Figure 2 Specifically, the anti-buoyancy anchoring structure 3 includes anchoring wings 31 disposed on the outer side of the bottom of the well body assembly 1 and arranged circumferentially along the well body assembly 1. The bottom surface of the anchoring wings 31 is provided with several limiting grooves 311 distributed circumferentially along the well body assembly 1. The anchoring wings 31 can increase the contact area between the well body and the soil, relying on the weight of the soil to prevent the well body from floating. The limiting grooves 311 can further increase the friction between the anchoring wings 31 and the soil, improving the anti-buoyancy effect. The anchoring wings 31 are usually made of PVC material and integrally formed with the bottom plate 11 of the well body assembly 1. Alternatively, metal anchoring wings 31 can be used and connected to the bottom plate 11 of the well body assembly 1 by bolts.

[0030] Reference Figure 2 , 4Specifically, the connecting structure 4 includes a first connecting pipe 41, a second connecting pipe 42, and a flexible connecting pipe 43. The flexible connecting pipe 43 is disposed between the first connecting pipe 41 and the second connecting pipe 42 and communicates with both the first connecting pipe 41 and the second connecting pipe 42. Both the first connecting pipe 41 and the second connecting pipe 42 are provided with connecting flanges 44. The side wall of the well body assembly 1 is provided with a connecting port 14. A mounting flange 15 is provided along the circumference of the connecting port 14 on the side wall of the well body assembly 1. The connecting port 14 and the mounting flange 15 are both disposed on one of the well walls 13 of the well body assembly 1, and the mounting flange 15 is integrally formed with the well wall 13. The first connecting pipe 41 passes through the connecting port 14, and the connecting flange 44 is fixed to the mounting flange 15 by bolts. Specifically, multiple bolts are provided along the circumference of the mounting flange 15, and each bolt is embedded within the mounting flange 15. The connecting flange 44 is provided with multiple through holes, each through hole corresponding to a bolt on the mounting flange 15, for the corresponding bolt to pass through. The first connecting pipe 41 and the second connecting pipe 42 are typically made of PVC, which has good corrosion resistance and sealing properties. The flexible connecting pipe 43 can be made of rubber, which has a certain degree of flexibility and can adapt to changes in the position of the drainage blind pipe, facilitating connection.

[0031] Reference Figure 4 Furthermore, the connection structure 4 also includes a sealing ring 45. A first annular sealing groove 151 is provided on the side wall of the mounting flange 15 along the circumference of the connection port 14, and a second annular sealing groove 441 is provided on the end face of the connecting flange 44 along the circumference of the connecting flange 44. Both the first and second annular sealing grooves 151 and 441 are adapted to the sealing ring 45 and are used for the sealing ring 45 to snap into place. The sealing ring 45 can further enhance the sealing performance of the connection and prevent water leakage. The sealing ring 45 can be made of rubber or silicone, possessing good elasticity and sealing performance.

[0032] The implementation principle of the modular prefabricated PVC drainage observation well of the drainage blind ditch in this application embodiment is as follows: The drainage observation well is designed with modular well body components 1, which reduces the time and difficulty of on-site construction and improves construction efficiency. The compressive strength reinforcement structure 2 enhances the compressive strength of the well body and ensures the stability of the well body in complex environments. The anti-buoyancy anchoring structure 3 prevents the well body from floating and ensures the safe use of the well body. The connection structure 4 facilitates the connection between the drainage observation well and the drainage blind pipe, and the sealing ring 45 ensures the sealing of the connection. Compared with the prior art, the drainage observation well of this embodiment has better construction flexibility, stability and connection performance, and can better meet the needs of actual engineering.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular prefabricated PVC drainage observation well for a drainage blind ditch, characterized in that: The well body assembly (1) includes a modularly assembled well body component (1), a compressive strengthening structure (2) set on the outer wall of the well body component (1), and an anti-buoyancy anchoring structure (3) set on the bottom of the well body component (1). The well body component (1) is provided with a connection structure (4) for connecting a drainage blind pipe. The connection structure (4) includes a first connecting pipe (41), a second connecting pipe (42), and a flexible connecting pipe (43). The flexible connecting pipe (43) is disposed between the first connecting pipe (41) and the second connecting pipe (42) and communicates with the first connecting pipe (41) and the second connecting pipe (42) respectively. Both the first connecting pipe (41) and the second connecting pipe (42) are provided with connecting flanges (44). The side wall of the well body assembly (1) is provided with a connection port (14). The side wall of the well body assembly (1) is provided with a mounting flange (15) along the circumference of the connection port (14). The first connecting pipe (41) passes through the connection port (14), and the connecting flange (44) and the mounting flange (15) are fixed by bolts. The connection structure (4) further includes a sealing ring (45). The side wall of the mounting flange (15) is provided with a first annular sealing groove (151) along the circumference of the connection port (14). The end face of the connecting flange (44) is provided with a second annular sealing groove (441) along the circumference of the connecting flange (44). The first annular sealing groove (151) and the second annular sealing groove (441) are both adapted to the sealing ring (45) and are used for the sealing ring (45) to be inserted.

2. The modular prefabricated PVC drainage observation well of a drainage blind ditch according to claim 1, characterized in that: The well body assembly (1) includes a base plate (11), a top frame (12), and several well walls (13) that are sequentially spliced ​​together. The well walls (13) are fixedly connected to the base plate (11) by bolts. The bottom wall of the top frame (12) is provided with an annular groove (121) along the circumference of the top frame (12). The top frame (12) is fitted onto the top of each well wall (13) through the annular groove (121). The top frame (12) is fixed to each well wall (13) by bolts.

3. The modular prefabricated PVC drainage observation well for a drainage blind ditch according to claim 2, characterized in that: The top wall of the base plate (11) is provided with an annular groove (111) along the circumference of the base plate (11). The annular groove (111) is adapted to the well wall (13) and is used for the well wall (13) to be inserted.

4. The modular prefabricated PVC drainage observation well for a drainage blind ditch according to claim 2, characterized in that: A first snap-fit ​​strip (131) and a second snap-fit ​​strip (132) are respectively provided on both sides of the well wall (13) along the height direction of the well wall (13), and the first snap-fit ​​strip (131) and the second snap-fit ​​strip (132) of adjacent well walls (13) are interlocked.

5. A modular prefabricated PVC drainage observation well for a drainage blind ditch according to claim 2, characterized in that: Waterproof sealant is provided at the joints between adjacent well walls (13) and at the joints between well walls (13) and bottom plate (11).

6. The modular prefabricated PVC drainage observation well of a drainage blind ditch according to claim 1, characterized in that: The pressure-resistant reinforcement structure (2) includes a plurality of annular reinforcing ribs (21) arranged along the height direction of the well body assembly (1) and a plurality of vertical reinforcing ribs (22) arranged along the circumferential direction of the outer wall of the well body assembly (1). The vertical reinforcing ribs (22) are tied and fixed to the annular reinforcing ribs (21) to form a grid structure.

7. The modular prefabricated PVC drainage observation well for a drainage blind ditch according to claim 1, characterized in that: The anti-buoyancy anchoring structure (3) includes an anchoring wing (31) disposed on the outer side of the bottom of the well body assembly (1) and disposed circumferentially along the well body assembly (1).

8. A modular prefabricated PVC drainage observation well for a drainage blind ditch according to claim 7, characterized in that: The bottom surface of the anchoring wing (31) is provided with several limiting grooves (311) distributed circumferentially along the well body assembly (1).