Double-hole plate-free sealing angular ash-discharging valve

Abstract

A double-hole angular ash-discharging plate-free sealing valve is provided, which comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are arranged symmetrically; the tails of the upper plate and the lower plate are articulated through a bolt; an upper hole is formed in the upper plate; the upper hole is airtightly communicated with an ash-discharging pipe; the ash-discharging pipe is arranged on the top of the upper plate; a lower hole is formed in the lower plate; the upper hole corresponds with the lower hole; when the upper plate overlaps with the lower plate, the upper hole is stagger with the lower hole; when the upper plate is stagger with the lower plate, the upper hole overlaps with the lower hole; the front side and one lateral side of the lower plate are airtightly connected with a lower sealing plate; the tail side and one lateral side of the upper plate are connected with an upper sealing plate, wherein the lateral side of the upper plate is opposite to the lower sealing plate; a spring is sleeved and installed at the outside of the bolt; the spring is arranged on the top of the upper plate or at the bottom of the lower plate; the tail end of the upper plate is fixedly connected with a spacing block; the spacing block corresponds with the lower sealing plate; the lower plate or the lower sealing plate is fixedly connected with a handle; the valve comprises an upper part and an lower part; the valve is fully closed when the upper part overlaps with the lower part and opened when the upper part is stagger with the lower part.

Description

technical field [0001] The invention relates to a mining device, in particular to a double-hole plateless sealing angle ash release valve. Background technique [0002] The purpose of the feeding of the circulating fluidized bed boiler is to return the unburned carbon in the returning ash to the bed for combustion, so as to improve the combustion efficiency of the boiler, reduce the carbon content of fly ash and large slag, and maintain the fluidization of the material in the furnace . Under normal circumstances, the return ash does not need to be discharged, because corresponding to a certain load, the cycle rate is certain. In actual operation, in some cases, such as poor coal quality, and the temperature of the feeder and the bed temperature continue to drop slowly, the return ash needs to be drained regularly to increase the bed temperature and keep the boiler running stably. Commonly used ash discharge valves are manual or electric gate valves. During the ash discharg...

AI Technical Summary

Problems solved by technology

Commonly used ash discharge valves are manual or electric gate valves. During the ash discharge process, ash spraying and jamming often occur. Since the ash temperature of the returned material generally reaches 800-950°C, it is easy to cause safety accidents.

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