Blow off valve

Abstract

The invention discloses a thruster valve in the blast furnace roof gas, which comprises the following parts: rack, dynamic cylinder, swaying cylinder, swaying arm, connecting rod, slider, fixing block and valve lid, wherein one end of dynamic cylinder hinges the rack at point A and the other end hinges the swaying cylinder at point B; one end of swaying cylinder hinges the dynamic cylinder at point B and the other end hinges the rack at point F; the first spring, slider, adjusting nut, fixing block are loaded in the swaying cylinder; one end of connecting rod hinges the slider at point E and the other end hinges the swaying arm at point D; one end of swaying arm hinges the rack at point C and the other two ends hinge the connecting rod and valve lid at point D and G separately.

Description

technical field [0001] The invention belongs to the category of mechanical engineering, and particularly discloses a settable automatic balancing relief valve used for blowing gas from the top of a blast furnace. Background technique [0002] Blast furnace top gas release valve is used to automatically and quickly discharge blast furnace gas into the atmosphere when the blast furnace is shut down in an emergency or when the pressure of explosive gas in the furnace increases sharply. It requires reliable, safe, neutral and tight operation. And it is convenient to set the valve sealing specific pressure according to the specific working furnace pressure of the blast furnace, and at the same time, the noise generated when the valve is opened is small. [0003] At present, domestic blast furnace top gas relief valves are usually of two types: electric winch type or electric chain type. The electric winch is sealed by the gravity of the heavy hammer, and the electric winch drive...

AI Technical Summary

Problems solved by technology

Its shortcomings are: the neutrality and sealing are not ideal, and the sealing specific pressure cannot be conveniently set according to the specific working furnace pressure of the blast furnace. In addition, the layout of the hoisting steel rope is troublesome, occupying an area and is not safe. The equipment investment and high operating costs

The electric chain type drives the opening and closing of the relief valve through a motor, a reducer, a sprocket, and a chain. During the opening and closing of the valve, it is necessary to balance the valve plate and add a counterweight, which not only increases the driving power of the motor, but also increases the weight of the entire equipment. Perform valve seal specific pressure setting

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