Gravity type particle drying machine

Abstract

The invention discloses a gravity type particle drying machine. The drying machine comprises a drying assembly, a fire coal conveying assembly and a dust collecting assembly, wherein the drying assembly comprises a drying bin and a chain plate discharging conveyor, the chain plate discharging conveyor is arranged at one end of the lower portion of the drying bin, a combustion chamber is arranged on the left side of the interior of the drying bin, a fire coal inlet is formed in the left side of the combustion chamber, an air distribution plate is arranged at the bottom in the combustion chamber, and an air blower communicates with the lower portion of the combustion chamber through an air blowing pipe. According to the drying machine, materials slowly slide downwards along an inclined material bed through self-gravity and exchange heat with high-temperature flue gas in the sliding process, and the gravity of particles is kept dominant all the time in the whole drying process, so that the purpose of drying the materials is achieved, the inclined material bed is composed of an inclined groove body, a lower heat exchange plate and an upper material pressing plate which are formed by casting and finish machining of heat-resistant alloy steel, the heat exchange effect with the high-temperature flue gas is better, and the drying efficiency is improved.

Description

technical field [0001] The invention relates to the technical fields of building materials and chemical industry, in particular to a gravity type particle dryer. Background technique [0002] There are many types of raw material dryers, but they are divided into two categories in terms of drying methods, one is a separate drying equipment, and the dried materials are transported to the next process for storage or processing, and the other is drying At the same time, there are crushing, grinding or classification processing equipment, and two kinds of production operations are carried out at the same time; [0003] Drying is combined with equipment such as crushing, grinding or classification. The advantage is that it simplifies the process flow, saves engineering investment, reduces the transportation link and dust, and at the same time the raw materials are dried during the processing, and the drying effect is relatively good, but generally Under normal circumstances, the ...

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Problems solved by technology

[0003] Drying is combined with equipment such as crushing, grinding or classification. The advantage is that it simplifies the process flow, saves engineering investment, reduces the transportation link and dust, and at the same time the raw materials are dried during the processing, and the drying effect is relatively good, but generally Under normal circumstances, the intake air temperature can only be controlled below 350°C, so the maximum feed moisture can only be controlled below 8%. When the initial moisture of the material is large and the material is viscous, it will cause production blockage and seriously affect the equipment capacity. difficulties, so factories will choose single-function drying equipment;

[0004] At present, the most commonly used drying equipment in China are rotary type (including multi-cylinder), vertical drying tower, chain plate mobile type, followed by flow type, vibrating flow type and other equipment. There are differences in drying adaptability. The rotary dryer has the widest application range and is widely used; the fluid dryer is only suitable for drying materials with light density such as slag; the suspension dryer is used in powder It is mainly used for materials, but it is not suitable for materials with large particles and high viscosity, because the rotating parts are easy to wear and the energy consumption per unit of drying is large, so it is rarely used

Oscillating flow, chain plate mobile and other drying equipment are limited by the intake temperature due to mechanical moving parts, so they can only be used to dry some waste residues, garbage and other environmental protection classifications, and cannot be adapted to large-scale, industrial raw material drying; However, some simple drying equipment such as vertical drying towers have been eliminated due to their high energy consumption and serious pollution;

[0005] Rotary (including multi-cylinder), vertical drying tower, chain plate mobile, suspension, flow, vibration and other drying equipment all have a common feature, that is, the materials are in a relatively violent state during the drying process. In the state of motion, energy consumption increases, there are many moving parts, a large amount of maintenance, and a large amount of dust is generated at the same time. It is necessary to add multi-stage dust removal or configure super-large-area bag dust removal equipment to barely maintain production. The process is complicated, the investment is large, and the heat consumption High, pollution, therefore, the present invention proposes a kind of gravity particle dryer to solve the problems existing in the prior art

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