Anti-blocking device for mine tunnel exhaust fan

Abstract

The invention discloses an anti-blocking device for a mine tunnel exhaust fan. The anti-blocking device comprises a shell, wherein fan blades are rotatably connected to the interior of the shell, and a cover plate is fixedly connected to the front faces of the fan blades and located outside the shell. According to the anti-blocking device for the mine tunnel exhaust fan, clamping plates are mounted in a rotating disc, when the rotating disc rotates, clamping balls move outwards under the inertia effect, the opening angle of the clamping plates is increased, the air inlet amount of an air inlet pipe is increased, and when a cam rotates, an ejector block impacts the clamping plates and the bottom of a vibration rod and extrudes the inner surface of a connecting rod at the same time; and a push-pull rod reciprocates up and down and drives clamping ball blades to reciprocate up and down at the same time, the included angle of the clamping plates is changed, the clamping balls reset under the effects of inertia and a spring, the vibration rod swings, the rotating disc vibrates in the radial direction, the rotating disc is affected by bidirectional threads on the surface of a fixed shaft while rotating, reciprocates up and down and vibrates in the axial direction, and the problem that traditional fan blades are prone to being blocked is solved by changing the radial and axial movement frequency.

Description

technical field [0001] The invention relates to the technical field of tunnel exhaust, in particular to an anti-blocking device for a mine tunnel exhaust fan. Background technique [0002] Exhaust fan, a type of air-conditioning appliance that is driven by a motor to rotate the fan blades to exchange air between indoor and outdoor, also known as ventilation fan, ventilation fan, etc. The purpose of exhaust is to remove indoor dirty air, adjust temperature, humidity and sensory effects . [0003] Because the mine is far away from the ground, it is difficult to exhaust the internal exhaust gas. The exhaust fan will be blocked by mineral powder during operation, which will cause damage to the fan blades. The motor will explode when it encounters flammable and explosive gas due to overload and heat, endangering the lives of miners. Safety. Contents of the invention [0004] The object of the present invention is to provide an anti-clogging device for exhaust fans in mine tun...

AI Technical Summary

Problems solved by technology

[0003] Because the mine is far away from the ground, it is difficult to exhaust the internal exhaust gas. The exhaust fan will be blocked by mineral powder during operation, which will cause damage to the fan blades. The motor will explode when it encounters flammable and explosive gas due to overload and heat, endangering the lives of miners. Safety

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