Five-way plastic valve for drilling hole during gas extraction, and installation and use method thereof

Abstract

The invention discloses a five-way plastic valve for drilling holes during gas extraction, and an installation and use method thereof, wherein the five-way plastic valve comprises a valve body. The inner of the valve body is provided with an upper connecting pipe joint, a left connecting pipe joint, a right connecting pipe joint, a lower dredging joint and a gas detecting port which are communicated mutually. The upper connecting pipe joint, the left connecting pipe joint and the right connecting pipe joint are respectively provided with an upper pipe hoop nut, a left pipe hoop nut and a right pipe hoop nut in thread connection. The lower dredging joint is in thread connection with a slag sedimentator, and the valve body is provided with a gas flow regulating device. All the parts can be manufactured by the injection molding of a poly ethylene (PE) material with light weight, strong corrosion resistance and good tightness. When the valve is used, the gas flow regulating device is controlled to regulate the gas flow, and the regulation opening can be indicated accurately. When the valve body is blocked by the coal dust or the slag, the slag sedimentator can be screwed off to removethe coal dust or the slag in the cavity of the slag sedimentator, or the slag sedimentator can be cleaned in regular period. The valve has convenient operation, and can fully enhance the safety performance of the gas extraction work in coal mine.

Description

technical field [0001] The invention belongs to the technical field of gas drainage in coal mines, and in particular relates to a five-way plastic valve for gas drainage drilling and an installation and use method thereof, which is used on a coal mine underground drilling gas drainage joint pipe. Background technique [0002] Coal seam gas drainage is one of the most effective methods to control mine gas and prevent coal and gas outburst. It is not only the need of safe production, but also the urgent need of saving energy and protecting the environment. The gas drainage drilling control valve is an important part of the gas drainage pipe. For a long time, the control valves used in my country's gas drainage are mainly iron valve bodies. There are many problems with this valve body, mainly in the speed of the pipe connection. Slow, heavy equipment, high cost, poor corrosion resistance, slag blockage in the valve body cannot be cleaned in time, and the opening of the borehole ...

AI Technical Summary

Problems solved by technology

The gas drainage drilling control valve is an important part of the gas drainage pipe. For a long time, the control valves used in my country's gas drainage are mainly iron valve bodies. There are many problems with this valve body, mainly in the speed of the pipe connection. Slow, bulky equipment, high cost, poor corrosion resistance, slag blockage in the valve body cannot be cleaned in time, and the opening of the borehole gas flow adjustment cannot be accurately indicated, which makes gas drainage pipelines have hidden dangers such as gas leakage , thus resulting in the closure of many boreholes, which not only causes a huge waste of resources, but also leaves a huge hidden danger to the safe production of coal mines

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