Grain drying machine and grain moisture detecting method thereof

Abstract

The invention relates to a grain drying machine and a grain moisture detecting method thereof. According to the method, an initial water content of grain before drying and a mass of grain before drying are detected; an inlet humidity at an air inlet of a drying machine hot-air pipe and an outlet humidity and a hot air flow at an air outlet of the hot-air pipe are collected; drying time from dryingstating time to current time is recorded; according to the difference between the inlet humidity and the outlet humidity, the hot air flow, and the drying time, a grain water content of the current time is calculated, wherein the difference between the initial water content and the current water content is in direct proportion to a difference between the inlet humidity and the outlet humidity, the hot air flow, and the drying time and is in reverse proportion to the mass of the grain before drying. According to the invention, the water content of the grain can be monitored in real time; afterthe water content of the grain in the drying process is obtained, the grain dryer can be intelligently adjusted and controlled based on the value, thereby preventing excessive drying of the grain orinsufficient drying.

Description

technical field [0001] The invention belongs to the technical field of grain drying, and in particular relates to a grain drying machine and a grain moisture detection method thereof. Background technique [0002] Most of the current grain drying in my country still relies on the traditional natural drying method, which is time-consuming and labor-intensive, and has a low degree of automation. [0003] In order to improve this phenomenon, a grain dryer has appeared to improve drying efficiency and drying quality. [0004] Existing grain drier, wherein is provided with hot-blast pipeline, leads with hot-blast to dry grain in hot-blast pipeline. Generally, the output power of hot air is constant from the beginning stage to the end stage. But in the drying process, the degree of grain dryness is changing, and the change has no definite rule. [0005] Drying with constant power will not dry well. For example, it can happen that the drying effect is good at the beginning, but...

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Problems solved by technology

[0008] The invention provides a grain moisture detection method for a grain dryer, the purpose of which is to realize the online real-time measurement of the grain moisture content and solve the problem that the existing technology cannot measure the grain moisture content in real time; the invention also provides a grain dryer for Solve the problem that the grain dryer in the prior art cannot measure the moisture content of the grain in real time

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