A sealing device for a closed calcium carbide furnace charging system

Abstract

The invention relates to the technical field of charging sealing, and discloses a sealing device for a sealed calcium carbide furnace charging system. The sealing device comprises a lower sleeve, an upper sleeve, a gas sealing ring and expansion rods, wherein the lower end of the lower sleeve is connected with an inlet valve of a stock bin; a flange is arranged at the upper end of the upper sleeve; the lower end of the upper sleeve is movably sheathed into the lower sleeve from the upper end of the lower sleeve; a correction ring is arranged at a part where the lower sleeve is sheathed and connected with the upper sleeve; the gas sealing ring is arranged at the upper end of the lower sleeve, and is provided with gas inlets and annular groove holes formed in the circumference of the lower part of the inner side of the gas sealing ring; one end of each expansion rod is connected with the lower sleeve and the other end thereof is connected with the upper sleeve; and the expansion rods are used to drive the upper sleeve to move along the axial direction of the lower sleeve. The sealing device has very reliable sealability and can effectively isolate air; when a charging bucket truck charges a raw material to the stock bin, the raw material can be positioned in a sealed space all the time; the raw material is prevented from being oxidized after being in contact with the air; in addition, dust and poisonous gas leakage is avoided; and pollution and human body injuries are avoided.

Description

technical field [0001] The invention relates to the technical field of charging and sealing, in particular to a sealing device for a charging system of a sealed calcium carbide furnace. Background technique [0002] The raw materials used in the production of calcium carbide are generally quicklime and coke. In the past, the closed calcium carbide furnace was filled with coke and quicklime at room temperature, so there was no sealing problem, but the current hot-charged closed calcium carbide furnace is filled with high-temperature pellets. Coke and quicklime, whose temperature reaches 500-800°C, which is higher than the ignition point of semi-coke, will burn or even explode once it comes into contact with oxygen in the air, so it is necessary to take sealing measures for the feeding process. If the sealing is not strict, it will cause the following Adverse consequences: (1) The raw material is a high-temperature, flammable and explosive pellet material. When the tank truck ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem of how to ensure that the raw material is sealed and does not touch the air when the material tank car of the sealed calcium carbide furnace feeds the material bin

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