A nitrogen injection control device for a gob

By introducing a T-junction and guiding components into the nitrogen injection pipeline in the goaf, combined with a switching assembly, the problem of wire rope entanglement was solved, enabling the orderly emission and control of nitrogen, and improving the reliability of the device and the service life of the wire rope.

CN224717725UActive Publication Date: 2026-09-04HUAJIN COKING COAL CO LTD SHAQU NO 2 COAL MINE
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Patent Information

Application Number
CN202522062621.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-25
Publication Date
2026-09-04
Estimated Expiration
2035-09-25

AI Technical Summary

Technical Problem

In existing technologies, steel wire ropes lack effective positioning and guidance within nitrogen injection pipelines in goaf areas, making them prone to tangling, which leads to the failure of baffle control and makes it impossible to effectively control the normal emission of nitrogen.

Method used

The nitrogen injection pipeline consists of multiple tees and connecting pipes, and includes a guide assembly and a switch assembly. The steel wire rope is guided by a ring pipe, guide wheel, and guide hole. Combined with the embedded groove and embedded ring, it is easy to install and disassemble. The nitrogen emission is controlled by the switch assembly of the fixing plate, sealing plate, connecting rod, and spring. The limit block is installed to prevent the spring from falling off. The vent hole and sealing ring are set to control the nitrogen injection and stop.

Benefits of technology

It effectively guides the orderly arrangement of wire ropes, reduces the possibility of tangling, improves the service life of wire ropes, ensures the normal emission and control of nitrogen, and saves labor intensity and money.

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Abstract

The utility model discloses a kind of underground goaf nitrogen injection regulation and control devices.Underground goaf nitrogen injection regulation and control device, comprising: nitrogen injection pipeline;The nitrogen injection pipeline includes multiple three-way pipes and connecting pipes;Guiding assembly, switch assembly and steel wire rope are arranged in the three-way pipe;The guiding assembly includes ring pipe, guide wheel, two connecting rods are installed between the guide wheel and the ring pipe, the ring pipe is fixed in one end of the three-way pipe, multiple guide holes are opened on the ring pipe.The underground goaf nitrogen injection regulation and control device provided by the utility model is set by nitrogen injection pipeline including multiple three-way pipes and connecting pipes, and guiding assembly including ring pipe, guide wheel and guide hole is installed in three-way pipe, so that multiple steel wire ropes in nitrogen injection pipeline can pass through guide hole and guide wheel, and then connected with switch assembly, effectively guide multiple steel wire ropes in nitrogen injection pipeline, reduce the possibility of winding steel wire rope.
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