DEVICE FOR OPERATIONAL AND EMERGENCY VENTILATION OF LONG BLIND MINING Russian patent published in 2021 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used when ventilating extended dead-end workings to create standard air parameters and ensure the safe evacuation of miners in the event of an emergency situation in the working face. The device includes a flexible pipeline, sections of which are connected to a rigid branch pipe, which is connected to the fan. A rigid pipe is installed between the upper surface of the metal frame and the strips fixed along its perimeter, the metal frame is fixed on a movable base, which is equipped with wheels. A fan is installed on top of the horizontal platform on vibration supports, a hole is made in the horizontal platform, which is located above the rigid pipe and is connected to it with a ventilation duct. A ventilation flap is installed at one end of the rigid branch pipe from the face side, and a gate is mounted in the ventilation channel, the joints of the rigid branch pipe with sections of the flexible pipeline are made in the form of a truncated cone, along the perimeter of the base, which is equal to the diameter of the rigid branch pipe, a recess is made, in which the clamping collar is fixed with the possibility of removal, at the beginning of the flexible ventilation pipeline at the mouth of the dead-end excavation, a wellhead fan with a ventilation flap is installed, in front of which a flexible ventilation branch is connected to the flexible pipeline, in which the gate is mounted.

EFFECT: creation of a device that makes it possible to ensure operational and emergency ventilation modes that guarantee the safety of miners during the period of excavation and in the event of an emergency.

1 cl, 3 dwg