Expansion lock type polyethylene micro jacking pipe
By using the interference fit between the cast iron connector and the inclined spigot end, as well as the locking tooth structure of the limiting stop, the deformation and leakage problems at the connection of the plastic jacking pipe are solved, achieving high sealing performance and a stable connection.
CN224315743UActive Publication Date: 2026-06-02HANGZHOU BAND MUNICIPAL PLASTIC PIPE CO LTD
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Patent Information
- Application Number
- CN202521274602.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-02
- Estimated Expiration
- 2035-06-20
AI Technical Summary
Technical Problem
Existing plastic jacking pipes are prone to deformation and leakage at the joints due to uneven external pressure, and their pressure-bearing capacity is insufficient.
Method used
The joint, made of cast iron, is connected to the inclined spigot and socket ends with an interference fit. Combined with the limiting stop and the tooth structure, the connection strength and sealing performance are enhanced. Polyurethane water-swellable adhesive is applied to the joint to enhance the sealing performance.
Benefits of technology
It improves the pressure-bearing capacity at the connection between the pipe body and the joint, prevents deformation and leakage, and enhances the sealing and stability of the connection.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses an expansion locking type polyethylene micro jacking pipe which comprises a pipe body. The connector is made of cast iron, the partition is arranged on the connector, the inserting opening ends are arranged on the connector and located on the two sides of the partition in an inclined mode, the bellmouth ends are arranged at the ends of the pipeline and matched with the inserting opening ends, and the limiting blocking pieces are arranged on the two sides of the upper portion of the partition and play a role in limiting and blocking the pipe body. Due to the arrangement of the joints made of cast iron, the adjacent pipe bodies are connected through the cast iron joints, due to the fact that the strength of cast iron is higher, the wall thickness of a cast iron inserting opening only needs to occupy 1 / 6-1 / 4 of the total wall thickness, a larger wall thickness can be reserved for a plastic bellmouth, and it is guaranteed that the pressure bearing capacity of the connecting positions of the pipe bodies and the joints is high; in the using process, deformation of the connecting position caused by pressure bearing is avoided, then leakage of the connecting position of the pipe body and the connector caused by deformation is avoided, and the sealing performance of the connecting position is improved.
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