Air-returning decompressing high temperature hot blast stove capable of dedusting and removing smoke with calandria

Abstract

The invention provides an air-returning decompressing high temperature hot blast stove capable of dedusting and removing smoke with a calandria. A waste heat return aircourse is arranged on an upper hearth of a combustion furnace, the waste heat return aircourse is communicated with a hot-blast air cavity in an inlayer of the upper hearth and is communicated with a hot-blast air outlet by a hot-blast air cavity in an outer layer; a smoke dust cavity of the upper hearth is communicated with a smoke dust channel through a smoke dust channel port and a draught fan, and the smoke dust channel is communicated with a dedusting and smoke-removing device; and a waste heat recovering mechanism comprises a fresh air inlet arranged on the dedusting and smoke-removing device, wherein the fresh air inlet is communicated with a waste heat cavity in the dedusting and smoke removing device through a fresh air cavity in the dedusting and smoke removing device, one side of the waste heat cavity is provided with a waste heat outlet, a waste heat blower is arranged on the waste heat outlet, and the waste heat blower is communicated with a waste heat return aircourse. The invention reduces pollution of smoke dust to atmosphere and is beneficial to protecting environment; after the fresh air enters, the fresh air has the constant temperature after heating for multiple times and has constant air-out flow, thereby improving effects of firing and green-removing of tea leaves, and being beneficial to improve firing quality of the tea leaves.

Description

technical field [0001] The invention relates to a high-temperature hot-blast stove, in particular to a high-temperature hot-blast stove of a decompression-type high-temperature hot-blast stove for dust removal, smoke removal, and air return. Background technique [0002] In the process of baking and finishing tea leaves, a high-temperature hot air stove is required to provide hot air with constant temperature and flow. Due to the unreasonable structural design of the high-temperature hot blast stove in the prior art, it is difficult to stabilize the temperature and flow of the air outlet, resulting in a poor effect of drying and curing the tea leaves, especially when the tea leaves are greened or the greening is not enough, the leaves are too green, or the greening is too much , leaves withered and yellow, these all bring a lot of troubles to frying tea leaves, even reduce the quality of tea leaves, affect the income of tea farmers. Most high-temperature hot blast stoves ar...

AI Technical Summary

Problems solved by technology

Due to the unreasonable structural design of the high-temperature hot air stove in the prior art, it is difficult to stabilize the temperature and flow of the air outlet, resulting in a poor effect of drying and curing tea leaves, especially when the tea leaves are greened or the greening is not enough, the leaves are too green, or the greening is too much , the leaves are withered and yellow, these all bring a lot of troubles to the roasting of tea, and even reduce the quality of tea, affecting the income of tea farmers

Most high-temperature hot blast stoves are not equipped with dust and smoke removal devices. When in use, the smoke and dust are scattered everywhere, polluting the air, which is not environmentally friendly.

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