Gas-material-shared reversing valve for double-hearth vertical kiln

Abstract

The invention relates to a gas-material-shared reversing valve for a double-hearth vertical kiln. The gas-material-shared reversing valve for the double-hearth vertical kiln comprises a valve body, abidirectional valve mechanism and a check valve mechanism, wherein a waste gas outlet is formed in one side of the top of the valve body, and a combustion-supporting air inlet is formed in the sidewall close to the water gas outlet, of the valve body; an inclined unloading port is formed in one side opposite to the combustion-supporting air inlet, of the valve body, and a discharge port is formedin the bottom of the valve body; the bidirectional valve mechanism is installed at one side close to the waste gas outlet and the combustion-supporting air inlet, and a bidirectional valve plate is capable of sealing the waste gas outlet or the combustion-supporting air inlet; and the check valve mechanism is installed at one side close to the unloading port, and capable of sealing the unloading port. According to the gas-material-shared reversing valve for the double-hearth vertical kiln, unloading and gas flow reversing of the double-hearth kiln can be completed by virtue of the charge portof a kiln body, and hole opening in a refractory material is not needed, so that the complexity degree of refractory material construction is reduced, the overall stress state of the refractory material is optimized, the service life of the refractory material is prolonged, and then the productivity of the double-hearth vertical kiln is increased.

Description

technical field [0001] The invention relates to the technical field of a double-chamber shaft kiln, in particular to a reversing valve for gas and material used in a double-chamber shaft kiln. Background technique [0002] Double-chamber shaft kiln is an important thermal kiln, mainly used for calcination of lime and dolomite. The outstanding advantage of this kiln type is that the heat consumption is lower than other kiln types, and the working method is that the two kiln chambers are connected to each other and heated alternately. When the working kiln is heated, a large amount of hot flue gas generated flows into the preheating kiln through the connecting channel to preheat the materials in the preheating kiln. This is repeated alternately to achieve the purpose of waste heat utilization and improve the use of fuel. efficiency. [0003] The commutation between the two kiln chambers of the double-chamber shaft kiln is mainly completed by the combustion air pipe, the exha...

AI Technical Summary

Problems solved by technology

However, for small double-chamber shaft kilns, the opening structure will have a greater impact on the masonry of refractory materials and the overall force

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