Cyclic deoxidation nitrogen-rich insect prevention device and method for closed bin

An anti-insect device and nitrogen-enriched technology, applied in edible seed preservation, food preservation, tobacco, etc., can solve problems such as dehydration damage, quality decline, etc., and achieve the effect of reducing operating load and process control difficulty

Pending Publication Date: 2020-12-04
WUHAN DONGCHANG STORAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of this, the present invention provides a cycle deoxygenation, nitrogen-enriching and insect-proofing device and method for airtight warehouses to solve the problem of dehydration and damage of crops such as grains and tobacco leaves in the process of filling nitrogen into storage machinery in the above-mentioned dry and cold regions. and quality degradation

Method used

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  • Cyclic deoxidation nitrogen-rich insect prevention device and method for closed bin
  • Cyclic deoxidation nitrogen-rich insect prevention device and method for closed bin
  • Cyclic deoxidation nitrogen-rich insect prevention device and method for closed bin

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Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the circulating deoxygenation, nitrogen-enriching and insect-proofing device of the airtight chamber provided by the present invention includes a separation and removal unit 1;

[0047] The separation and removal unit 1 has a first gas inlet 11, a first gas outlet 12 and a second gas outlet 13, the first gas inlet 11 is used to communicate with the left end of the inside of the airtight chamber 2, and the first gas outlet 12 is used for It communicates with the right end inside the airtight chamber 2, so that a closed and circulating loop is formed between the separation and removal unit 1 and the airtight chamber 2, that is, the air in the airtight chamber 2 enters the separation and removal unit 1 through the first air inlet port 11. Inside, and then return to the inside of the airtight warehouse 2 through the first air outlet 12, and the second air outlet 13 is used to communicate with the outside of the airtight warehouse 2;

[0048] The ...

Embodiment 2

[0057] read on figure 2 The difference between the second embodiment and the first embodiment is that the adsorption separation assembly also includes a humidifier 14 and a three-way pipe 15, the outlet end of the humidifier 14 communicates with one of the mouths of the three-way pipe 15, and the three-way pipe 15 The other two nozzles of the tube communicate with the first gas outlet 12 and one end of the airtight chamber 1 respectively.

[0058] Preferably, the oxygen generator 1A is a low pressure adsorption vacuum desorption oxygen generator, the first suction part is a vacuum pump, and the molecular sieve is a zeolite molecular sieve.

[0059]During specific implementation, the oxygen generator 1A and the first suction part in the separation and removal unit 1 can be started simultaneously, and the humidifier 14 is opened to carry out synchronously. Other gases and the water vapor generated by the humidifier 14 flow back into the airtight chamber 2 together, and the air...

Embodiment 3

[0061] read on image 3 , The difference from Embodiment 1 and Embodiment 2 is that the adsorption separation assembly uses the deoxygenator 1B and the dehumidifier 16 to replace the oxygen generator 1A in Embodiment 1 and Embodiment 2.

[0062] Specifically, the deoxygenator 1B includes a first adsorption tower, the adsorbent assembly includes a first adsorbent, the first adsorbent is installed on the first adsorption tower, and a carbon molecular sieve is arranged on the first adsorbent to adsorb oxygen and the Water vapor in other gases except oxygen, and the nitrogen in the separated gases other than oxygen is discharged at the first gas outlet 12, and the first suction part is used to evacuate the first adsorption tower and vacuumize the first adsorption tower. An adsorption tower desorbs, so that oxygen and water vapor in gases other than oxygen are discharged to the dehumidifier 16 at the gas outlet of the deaerator 1B.

[0063] The dehumidifier 16 has a first air inle...

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Abstract

The invention discloses a cyclic deoxidation nitrogen-rich insect prevention device and method for a closed bin. The device comprises a separation and removal unit, the separation and removal unit isprovided with a first air inlet end, a first air outlet end and a second air outlet end, the first air inlet end is used for being communicated with the left end of the interior of the closed bin, thefirst air outlet end is used for being communicated with the right end of the interior of the closed bin, so that a closed and circulating loop is formed between the separation and removal unit and the closed bin, the second air outlet end is communicated with the outside of the closed bin, and the separation and removal unit is used for separating air in the closed bin and discharging oxygen separated from the air and other gases except the oxygen from the second air outlet end and the first air outlet end respectively. According to the cyclic deoxidation nitrogen-rich insect prevention device and method for the closed bin, the indirect nitrogen-filling insect prevention effect is achieved, the humidity in the closed bin is kept, and crop storage is facilitated.

Description

technical field [0001] The invention relates to the technical field of mechanical nitrogen-filling prevention and control of storage pests, in particular to a device and method for circulating deoxygenation and nitrogen-enriching pest control in an airtight warehouse. Background technique [0002] An important method to replace aluminum phosphide fumigation and pest control is to use a nitrogen generator to carry out mechanical nitrogen filling and air conditioning pest control technology. The basic principle is to use a nitrogen generator to fill high-purity nitrogen separated from the air into a sealed airtight warehouse In the storage process, nitrogen replaces the oxygen in the airtight warehouse to maintain a low-oxygen environment in the warehouse, so as to achieve the purpose of low-oxygen and insect-proof storage. [0003] The basic principle of mechanical nitrogen filling control is to use the nitrogen generator to fill the high-purity nitrogen separated from the ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/18A24B15/18A23B9/20
CPCA23B9/20A24B3/18A24B15/18
Inventor 李翊玮来振利李秀峰刘勇
Owner WUHAN DONGCHANG STORAGE TECH
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