A suction rubber for blowout preventer

By improving the base structure and material selection of the pumping rubber, the problems of insufficient sealing and anti-jamming were solved, achieving efficient sealing and convenient replacement, extending service life, and improving the safety and efficiency of the oil extraction process.

CN224413599UActive Publication Date: 2026-06-26PUYANG HENGXIN RUBBER & PLASTIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PUYANG HENGXIN RUBBER & PLASTIC
Filing Date
2025-09-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing pump rubber seals have insufficient sealing performance under high pressure and high flow rate oil well conditions, are inconvenient to replace, their anti-sticking effect is affected by impurities, and their service life is short.

Method used

The substrate is designed with a double-layer structure consisting of a straight section, a conical section, and an anti-jamming section. Combined with a sealing lip, a support ring, and a sealing ring, it uses polyurethane and specific rubber materials to achieve sealing and anti-jamming functions, and can be easily replaced through snap-fit ​​splicing.

Benefits of technology

It improves sealing and anti-jamming properties, extends service life, simplifies the replacement process, and ensures the continuity and safety of the oil extraction process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of suction rubber of blowout preventer box, it relates to petroleum exploitation technical field, specifically a kind of suction rubber of blowout preventer box, including two matrix, framework, the upper end opening inner diameter of matrix is greater than lower end opening inner diameter, the matrix is constituted by straight cylinder section, conical cylinder section, anti-jamming section, the upper and lower ends of straight cylinder section are respectively fixedly connected with conical cylinder section, anti-jamming section;By adopting two matrix, two matrix are constituted after being spliced by jointing a cylinder structure.In the replacement of suction rubber of blowout preventer box, it is not necessary to disassemble or move sucker rod, just replace two matrix in blowout preventer box, two matrix are constituted after being spliced by jointing a cylinder structure, the cylinder structure can embrace the outer lateral wall of sucker rod all around, greatly improve the disassembly replacement efficiency of suction rubber, avoid affecting project progress.
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