Multiple drying tunnel type oven having waste gas filtration function

Abstract

The invention discloses a multiple drying tunnel type oven having a waste gas filtration function. The multiple drying tunnel type oven consists of a drying box, a ventilation box and a filtration box from the top down; a gas exhaust pipeline communicates the drying box with the filtration box; a far-infrared radiation lamp tube and a material conveying mechanism are arranged in the drying box; a horizontal air intake channel is formed in the ventilation box, and communicates the drying box with the filtration box; an electric heating wire is arranged below the horizontal air intake channel; a cooling liquid pipe, a waste gas exhaust pipe and a waste gas absorption solution are arranged and contained in the filtration box; gas vents are distributed in the waste gas exhaust pipe; and the gas exhaust pipeline is connected with the waste gas exhaust pipe in the filtration box through an air pump. The multiple drying tunnel type oven has the following advantages that (1) the far-infrared radiation lamp tube and the electric heating wire are arranged reasonably, multiple drying is realized, and the drying efficiency is high; (2) by employing hot air circulation, energy can be saved; (3) waste gas generated after a material is dried is filtered directly without emission, so that environmental protection is facilitated; (4) the generated waste gas is recycled, so that the production cost is lowered; and (5) the multiple drying tunnel type oven is compact in structure and convenient to use.

Description

technical field [0001] The invention relates to the technical field of drying devices, in particular to a multiple drying tunnel oven with waste gas filtering function. Background technique [0002] Most of the dryers used by the vast majority of enterprises in our country are electric heating dryers, or single far-infrared drying dryers, such as the BJ2-4000 tunnel furnace produced by Wujiang Zhengda Oven Manufacturing Co., Ltd. This electric heating The dryer rises to a relatively high temperature relatively slowly, and consumes a lot of electric energy. The exhaust gas generated after drying is not treated, which will pollute the environment. There are also electric heating dryers used in grain drying. Due to the low drying efficiency and the inability of moisture Timely discharge makes the residual moisture of the material large and the drying is incomplete; for the far-infrared dryers that have recently emerged, such as the ZH-ST4020 dryer produced by Shanghai Zhihan In...

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Problems solved by technology

[0002] Most of the dryers used by the vast majority of enterprises in our country are electric heating dryers, or single far-infrared drying dryers, such as the BJ2-4000 tunnel furnace produced by Wujiang Zhengda Oven Manufacturing Co., Ltd. This electric heating The dryer rises to a relatively high temperature relatively slowly, and consumes a lot of electric energy. The exhaust gas generated after drying is not treated, which will pollute the environment. There are also electric heating dryers used in grain drying. Due to the low drying efficiency and the inability of moisture Timely discharge makes the residual moisture of the material large and the drying is incomplete; for the far-infrared dryers that have recently emerged, such as the ZH-ST4020 dryer produced by Shanghai Zhihan Instrument Equipment Co., Ltd., although it solves the problem of slow temperature rise and power consumption , but only use a single far-infrared radiation to dry, the drying efficiency is also low, and there is no waste gas treatment device

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