Special hot blast furnace for drying shed

Abstract

The invention relates to a special hot blast furnace for a drying shed. The top of a combustion chamber is an arch-shaped furnace top made of steel plates in a rolling mode; a left side plate, a right side plate, a front plate, a rear plate and a fire net are connected with the edge of the arch-shaped furnace top to form the combustion chamber; an ash box is arranged between the fire net and a base plate; firebrick furnace linings are built on the inner side which abuts against the left side plate, the right side plate, the front plate and the rear plate; a secondary air duct is arranged between the ash box and the combustion chamber; the upper portion of the rear plate of the combustion chamber is a fire outlet tube sheet connected with a finned tube exchanger; the finned tube exchanger is composed of at least three sets of small-bore finned tubes, wherein a plurality of small-bore finned tubes serve as each set, the finned tubes are arranged to be an upper layer, a middle layer and a lower layer through connecting boxes and are connected and communicated in sequence to form a high-temperature smoke gas flow path and two ports, the upper port is connected with the fire outlet tube sheet, and the lower port is connected with a smoke collecting box; a chimney is led out below the middle portion of the smoke collecting box. The special hot blast furnace is mainly used for baking bamboo and wood products and agricultural and sideline products in cooperation with the drying shed.

Description

technical field [0001] The invention relates to a drying device, in particular to a special hot air stove for a drying room of bamboo and wood products with low energy consumption and fast temperature rise. Background technique [0002] At present, although there are many types of known hot blast stoves that are matched with bamboo and wood product drying rooms, as far as the direct-fired hot blast stoves supporting the drying room are concerned, there are two typical structural forms. One kind of hot blast stove is rolled into a circle with a steel plate A circular bow-shaped long cylinder with an angle greater than or equal to 180 o, a combustion chamber is set at the front of the long cylinder, an ash hopper is arranged under the combustion chamber, and a flat grate grate is arranged between the ash hopper and the combustion chamber. The rear part of the cylinder is a high-temperature flue gas outlet pipe, and the rear end of the pipe is connected with a simple tube rad...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of slow temperature rise, high energy consumption and short service life of the existing hot blast stove in the drying room of bamboo and wood products, the invention provides a hot blast stove in the drying room, which has low energy consumption, fast temperature rise and long service life

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