Plugging bag

By designing a sealing bag that connects the sleeve, the bag body and the flow control mechanism, the problem of reducing the extrusion pressure caused by the volume reduction after the sealing slurry is solved, and the goal of preventing slurry leakage and seepage and improving the grouting filling and reinforcement effect is achieved.

CN119712212APending Publication Date: 2025-03-28HUAIBEI MINING CO LTD
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Patent Information

Application Number
CN202411602441.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

During the grouting filling construction, the volume of the existing sealing bag shrinks after solidification, resulting in a decrease in the extrusion pressure between the bag and the side wall of the drill hole, causing the slurry to leak and seepage, affecting the grouting filling and reinforcement effect.

Method used

A sealing bag is designed including a connecting sleeve, a bag body and a flow control mechanism. The connecting sleeve is connected to the grouting tube. The capsule body is composed of an outer capsule cloth, an inner capsule cloth and an inner membrane. The liquid storage cavity between the inner membrane and the inner capsule cloth is filled with fluid. The flow control mechanism is used to cooperate with the discharge hole and the spring to ensure that the compression force is restored after the slurry solidifies.

Benefits of technology

It effectively prevents slurry leakage and seepage, maintains the pressure of grouting slurry, improves the grouting filling and reinforcement effect, and enhances the stability of the outer capsule cloth when under pressure.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention relates to the technical field of mine plugging, in particular to a plugging bag which comprises a connecting sleeve connected with a grouting pipe, an upper convex ring and a lower convex ring are arranged at the upper end and the lower end of the connecting sleeve respectively, an annular groove is concavely formed in the upper surface of the lower convex ring, and an annular sliding plate is slidably connected into the annular groove in a sealed mode. A drainage hole is formed in the outer side of the annular groove, the bag body comprises annular cylindrical outer bag cloth, inner bag cloth and an inner film which are sequentially arranged from outside to inside, and the upward two ends of the outer bag cloth and the upward two ends of the inner bag cloth are fixedly connected with the outer wall of the upper convex ring and the outer wall of the lower convex ring in a sealed mode respectively; the upper end and the lower end of the inner film are fixedly connected with the lower surface of the upper protruding ring and the upper surface of the lower protruding ring in a sealed mode respectively, a liquid storage cavity communicated with the annular groove is formed between the inner film and the outer wall of the connecting sleeve, and the liquid storage cavity is filled with fluid. According to the scheme, slurry can be effectively prevented from leaking and seeping between the outer bag cloth and the side wall of the drill hole during grouting and filling in the drill hole above or below the plugging bag.
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