Foam dust arresting liquid and dust collecting method

The invention provides a foam dust arresting liquid and a dust collecting method. The foam dust arresting liquid comprises a foaming agent, water and glycerin, wherein the foaming agent is a surfactant. The dust collecting method using the foam dust arresting liquid comprises the following steps of: introducing air into the foam dust arresting liquid by using a foam generator to make the foam dust arresting liquid produce foam; and conveying the foam to a jet nozzle, and jetting the foam into an environment from which dust is to be collected through the jet nozzle so as to make the foam plug, coat and/or bond floating dust in the environment. By adopting the foam dust arresting liquid and the dust collecting method provided by the invention, a large amount of foam produced by the foam dust arresting liquid is jetted to the environment from which dust is to be collected, and is used for plugging, coating and bonding the floating dust, so that the floating dust is turned into fall dust, and ...

Drainage system and method for gas pipeline

The invention relates to a drainage system and method for a gas pipeline. The drainage system comprises a water collecting tank, wherein the water collecting tank is connected with the gas pipeline through a valve body; a drainage port is arranged at the lower part of the lateral wall of the water collecting tank; the valve body comprises a first port communicated with the gas pipeline, a second port communicated with the water collecting tank and a third port communicated with air; and the valve body has two conduction states: 1, the first port is conducted with the second port; and 2, the second port is conducted with the third port. The drainage system and method for the gas pipeline provided by the invention can independently drainage the waterlogging of the gas pipeline and the watercollecting tank through a controllable valve body arranged between the gas pipe and the water collecting tank, thereby improving the controllability of the waterlogging discharged by the gas pipeline.

Eccentric wheel clamp and method for running casing in drill hole of mine

The invention provides an eccentric wheel clamp and a method for running a casing in a drill hole of a mine. The eccentric wheel clamp provided by the invention comprises an annular casing clamp, an eccentric wheel and a suspension arm, wherein the circumference of the annular casing clamp is provided with a hole; the eccentric wheel is fixed on an extended part of the annular casing clamp on theedge of the hole and extended into the annular casing clamp through the hole; one end of the suspension arm is fixedly connected with the eccentric wheel; and the length of the part of the eccentric wheel extended into the annular casing clamp through the hole is changed by lifting or pressing the suspension arm. The invention also provides the method for running the casing in the drill hole of the mine by using the eccentric wheel; the running of the casing is performed in the mine by using the eccentric wheel clamp; the method is convenient to use, and is suitable for various types of casings ...

Compressed-air automatic spraying device and system

The invention provides a compressed-air automatic spraying device and system. The automatic spraying device comprises a spray head, an air pipe, a water pipe and a water storage device, wherein, the water storage device is respectively connected with the air pipe, the water pipe and the spray head; the water pipe is equipped with a water valve; the air pipe is equipped with an air pipe spring switch; and the air pipe spring switch is connected to the outer wall of the water storage device through a rope. The compressed-air automatic spraying device and system provided by the invention have the advantages of overcoming the defect of the prior art that gas explosion is easily caused when an electric control automatic spraying device or an acoustic control automatic spraying device is applied to a working environment of a coal mine with higher gas content, and achieving the purpose of regularly and safely performing automatic spray by virtue of compressed air.

Dust-removing device and dust-removing system

The invention provides a dust-removing device and a dust-removing system. The dust-removing device comprises a water storage device, an air outlet pipe and an air inlet device, wherein the water storage device is used for storing water; the air outlet pipe is arranged on the top of the water storage device and is communicated with the water storage device; one end of the air inlet device is positioned in the water storage device and close to the bottom of the water storage device; and the other end of the air inlet device is installed outside the water storage device and is higher than the water level of the water stored in the water storage device. In the invention, the technical defect that the coal dust in the prior art directly enters into a gas extraction system so as to bring threat to the safety and stability of the gas extraction system is overcome, and the device and the system are capable of removing the coal dust before the coal dust enters into the gas extraction system, thus ...

Water drainage system and method based on downward drainage borehole

The invention provides a water drainage system and method based on a downward extraction borehole, wherein the method comprises the following steps: tripping a protection casing and a breather pipe in the downward extraction borehole, wherein the breather pipe is communicated with the protection casing; extracting gas in the downward extraction borehole through the protection casing, and monitoring whether the negative pressure in the downward extraction borehole reaches the preset value in a preset period; when the negative pressure reaches the preset value in the preset period, opening the breather pipe and employing the pressure difference of the negative pressure and the outside atmospheric pressure to drain the logged water in the downward extraction borehole through the protection casing. The drainage system and method based on downward extraction borehole provided by the invention solve the technical defect in prior art that the logged water in the downward extraction borehole influences ...

Eccentric wheel clamp and method for running casing in drill hole of mine