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Continuous negative pressure dryer and continuous drying method

A drying machine and negative pressure technology, which is applied in the direction of local stirring dryers, static material dryers, dryers, etc., can solve the problem that the drying temperature and drying time cannot be controlled at the same time

Pending Publication Date: 2020-01-10
INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the grain dryer in the prior art cannot control the drying temperature and drying time at the same time, thereby providing a negative pressure dryer that can automatically adjust the drying temperature and drying time according to the moisture content of the grain. Continuous dryer and continuous drying method

Method used

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  • Continuous negative pressure dryer and continuous drying method

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Effect test

Embodiment 1

[0051] This embodiment provides a negative pressure continuous dryer, its structure is as follows figure 1 As shown, it includes a vertically arranged bin body 1 , the top of the bin body 1 is a feeding port 11 , and the bottom is a feeding port 12 . The grain is put into the bin body 1 from the feed port 11, heated and dried in the bin body 1 to remove moisture, and then discharged from the discharge port 12 to complete the drying process. In this embodiment, the material passes through the interior of the bin body 1 from top to bottom under the action of its own weight, and several drying layers 2 are distributed along the moving direction of the material. Each drying layer 2 is equipped with a heating unit 3 for heating and drying the material. . An air outlet 22 is opened on the side wall of the bin body 1, and the negative pressure device connected to the air outlet 22 of the bin body 1 discharges the air in the bin body 1, forming a negative pressure in the bin body 1, ...

Embodiment 2

[0070] This embodiment provides a negative pressure continuous dryer, the difference between its structure and the negative pressure continuous dryer in Example 1 is that there is no temperature sensor in each drying layer, instead there is a temperature sensor in each drying layer A moisture detection device is provided to detect the moisture content of the material in the drying layer, and the control device controls the working temperature of the heating unit in the adjacent next drying layer according to the detection result of the material in the upper drying layer.

Embodiment 3

[0072] This embodiment provides a kind of continuous drying method, utilizes the negative pressure continuous dryer that provides in the embodiment 1 to carry out the following operation steps to the grain:

[0073] S1: The grain is sent into the bin body from the feed port;

[0074] S2: heat and dry the grain in the bin body, comprising the following steps:

[0075] S21: adopt the first moisture detector that is positioned at feed inlet place to detect grain, obtain original moisture content M 0 , and feed back the result to the control device;

[0076] S22: The control device according to the above original moisture content M 0 The detection result controls the heating temperature of the heating unit in the first drying layer;

[0077] Specifically, different drying stages corresponding to the moisture content range of the grain and the temperature of the grain itself are pre-registered in the control system, and the corresponding heating temperature needs to be set for t...

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Abstract

The invention provides a continuous negative pressure dryer and a continuous drying method. The dryer comprises a bin body, and a plurality of drying layers, a negative pressure device, a heating unit, a discharge opening adjustment device, a control device, and a detection device, which are arranged in the bin body. The detection device comprises moisture detection devices which are arranged at afeeding inlet and a discharge opening respectively and temperature sensors which are arranged in the plurality of drying layers. The heating unit, the discharge opening adjustment device, and the detection device are all electrically connected to the control device; and the control device controls the working temperature of the heating unit according to detection results of the moisture detectiondevice at the feeding inlet and the temperature sensors, and controls the discharge opening adjustment device to adjust the discharge speed according to the detection result of the moisture detectiondevice at the discharge opening. The continuous negative pressure dryer implements the continuous drying method to perform uninterrupted drying operation on the materials.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a negative pressure continuous dryer and a continuous drying method. Background technique [0002] After the grain harvest is completed, it generally needs to be dried for many days before it can be safely stored in the warehouse; however, during the busy farming period, especially when thunderstorms occur frequently or in consecutive days of rainy weather, the grains stacked together will be damaged due to their own humidity. And heat, it is extremely easy to mold, rot and germinate, which will cause huge losses to farmers. Grain drying is an important step in agricultural production. Grain dryers use factors such as controlling temperature and humidity to reduce the moisture content in grains. Under the above circumstances, grain dryers are usually used to dry the grains. The use of these dryers has greatly alleviated the problem that grains with high moisture content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B9/06F26B21/00F26B25/22
CPCF26B9/06F26B21/001F26B25/22F26B2200/06
Inventor 周巾英马岩波冯健雄朱雪晶曹晓林陈桂鹏何家林
Owner INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI
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