Telescopic type pulling hole packer

Abstract

The invention discloses a telescopic drainage hole sealer which comprises a drainage pipe; wherein, at least two coaxial hole seal pipes are sheathed on the drainage pipe, the drainage pipe is longer than the hole seal pipes, both ends of each hole seal pipe are respectively provided with a closure plate, and a coaxial cylindrical air sac is arranged between the hole seal pipes; the drainage pipe penetrates through and is connected with the closure plate and the air sac through rotation fit, and a holding apparatus outside the closure plates on the ends of the hole seal pipes is arranged on the drainage pipe. The telescopic drainage hole sealer has the advantages of simple structure, easy production and installation and convenient operation, can be suitable for draining or injecting liquid into holes of different hole diameters through the dimension change of the components of the telescopic drainage hole sealer, solves the fault problems of pipeline cracking, ventilation and liquid leakage and even breakage, prolongs the service life of the main device, shortens the working time, increases the working efficiency, reduces the drainage times and the maintenance workload and cost, has high drainage or liquid injection speed, high reusability and easy maintenance, and guarantees the quality and the safety of liquid drainage or injection.

Description

technical field [0001] The invention relates to a device on a mine outburst prevention and water prevention comprehensive system, in particular to a telescopic drainage and sealing device used for gas drainage, coal body water injection and grouting water blocking. Background technique [0002] In the process of mine construction and production, outburst coal seams and water-bearing rock formations are often encountered in shafts, roads, chambers and other working faces. In order to prevent coal and gas outbursts and prevent rock formations from permeating and flooding wells, it is necessary to drain coal seam gas, inject water into coal seams to release gas, conduct water through aquifers, and grout water plugging according to the specific conditions of outburst prevention and water prevention. , in order to achieve safe production in mines, improve work efficiency, and prevent accidents. At present, there are mainly two sealing methods for gas drainage, coal water injecti...

AI Technical Summary

Problems solved by technology

At present, there are mainly two sealing methods for gas drainage, coal water injection and grouting water plugging. One is to insert the drainage pipe into the drainage hole, and use such as yellow mud, cement mortar or chemical materials to seal the drainage hole. Sealing around the discharge pipe, this sealing method is complicated to operate, has many procedures, the sealing quality is not high, and lacks flexibility; the other uses a sealing device, although the sealing process has the advantages of simple, fast, and reusable , but there are also the following defects: high price, easy to damage, high requirements on the drilling quality of the sealing section, no deformation and no subsidence in the drilling, and the plugging effect is not good, not tight, or the initial plugging is better Late stage is poor, etc.

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