Energy-saving type grain microwave insect preventing and mould-proof method and special equipment

A kind of anti-mildew technology for grains, which is applied in the direction of trapping or killing insects, application, preservation of seeds through radiation/electrical treatment, etc., can solve the problems of tarnish and beauty, high cooling speed, surface cracks, etc. The effect of enhanced thermal effect, improved heat transfer efficiency, and shortened time

Inactive Publication Date: 2006-08-09
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the cooling rate of rice is too high or using wind cooling, it will cause surface cracks and roughness, and lose its original luster and beauty

Method used

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  • Energy-saving type grain microwave insect preventing and mould-proof method and special equipment
  • Energy-saving type grain microwave insect preventing and mould-proof method and special equipment
  • Energy-saving type grain microwave insect preventing and mould-proof method and special equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 (Examples of basic test methods and equipment):

[0041] 1. Test materials and equipment

[0042] The grains used in the experiment were paddy and rice produced in China (variety Jinyou 207, provided by Hunan Jinjian Rice Co., Ltd.). Common storage insects are rice elephants, saw-valley pirates, and red pseudo-valley pirates, gifted by Henan University of Technology. The analytical testing instrument is a near-infrared grain quality analyzer (Perten 9100 / 01, produced in Germany).

[0043] The microwave oven of the present invention adopts industrial microwave oven, model: QW-15HM, 2450MHz, output power 24KW, produced by Guangzhou Kewei Microwave Energy Co., Ltd. The effective size (the accumulation volume of rice in the microwave oven) is 4680mm×600mm×60mm (length×width×height).

[0044] 2. Test method:

[0045] (1) Sample preparation

[0046] 1) Put 20 live and robust test insects (Rice Elephant, Sawgrass Pirate, Red Grain Pirate) into 200g rice samples (which ha...

Embodiment 2

[0072] Example 2 (Examples of special equipment and process parameters of the present invention):

[0073] By the attachment figure 1 , 2 As shown, the processing equipment of the present invention includes processing units A and B, wherein the belt conveyors (5) and (6) in the processing unit A have a projection length L1=2m, and an actual length of 2.263m. The belt width is 600mm, the number is 3, and the inclination angle θ=20°. The speed of belt conveyors 5 and 6 is 399 rpm, and the residence time of rice in A1 and A2 is 8 min respectively.

[0074] The belt conveyor (7) in the processing unit B has a length L=3m and a width of 600mm; the belt conveyor (8) has a length of 3.3 meters and a width of 600mm. The speed of the belt conveyors (7) and (8) is 375 rpm. The total time of microwave treatment (B1 and B2) is 5 min. The microwave output power is 13.125kw;

[0075] The total length of the microwave device is 9.8m, the total width is 0.7m, and the total height is 3m.

[0076] ...

Embodiment 3

[0083] Embodiment 3 (example of the effect of the invention):

[0084] In order to obtain the best implementation of the present invention, the applicant designed a series of 1#-17# tests. After reagent tests and tests, the main technical parameters are as follows:

[0085] Microwave output power: P=13.125kw;

[0086] The rice flow rate is 820kg / h; the irradiation mass is 85.3kg (rice) and 71.6kg (rice);

[0087] The specific heat of rice is 1.96kJ / kg·℃; the heat loss is 5%; the microwave dose (power) is 0.15kw / kg;

[0088] The initial temperature of rice is 38℃; the thickness of the material is 50±2mm; the width of the material is 500±2mm;

[0089] The total length L used for the irradiation treatment in the experimental microwave oven is 7.2m; when the speeds of the belt conveyors (7) and (8) are 300, 375, and 400 rpm, the corresponding microwave treatment time is 4, 5, and 6 min, respectively.

[0090] Table 1 shows the preheated air temperature 45℃-50℃, time 8-12min, make the ...

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PUM

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Abstract

The present invention relates to an energy-saving type pests-resisting mould-proofing treatment method for grains and its special-purpose equipment. Said invention includes the microwave irradiation-cooling treatment steps, and is characterized by that it includes the steps of preheating, microwave irradiation, cooling and heat exchange, in which the heat exchange is implemented in unit A for preheating and cooling and the microwave irradiation is implement in unit B, and between unit A and unit B ac closed channel is connected. Besides, said invention also provides its working principle and operation method.

Description

Technical field [0001] The invention belongs to the technical field of grain storage and fresh-keeping. Specifically, it belongs to the technical field of prevention and control of main storage pests and molds in the storage process of rice, rice, wheat and other grains. It relates to the use of microwave treatment and heat recycling to save energy and completely kill the main storage pests (including Various insect states such as adults, eggs, etc.) and methods and special equipment for reducing rice mold Background technique [0002] The research on insect and mildew prevention during grain storage in my country mainly focuses on the raw materials after harvest. At present, the commonly used insect prevention methods are chemical fumigation represented by phosphine (or aluminum phosphide) and methyl bromide. Taking rice as an example, chemical fumigants have a good control effect on adults, but they have poor control effects on eggs and mold, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/06A01M17/00
CPCY02P60/85
Inventor 赵思明熊善柏刘友明谭汝成程学勋程科
Owner HUAZHONG AGRI UNIV
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