Local circulating fumigation device and method thereof applied to local circulating fumigation

Abstract

The invention discloses a local circulating fumigation device comprising a pressure container filled with a fumigant, a gas distributor, at least a fan and air intake pipes directly connected with, and at least more than three gas ingress pipes, wherein a group of interfaces are arranged on the gas distributor; the pressure container, the air outlet of the fan and the gas ingress pipes are respectively connected with the gas distributor through flexible pipes; the air inlet of the fan is directly connected with the air intake pipes; the gas ingress pipes and the air intake pipes are hard pipes; small holes are arranged on the peripheries of the lower parts of the gas ingress pipes and the air intake pipes; and the aperture can ensure grain granules not to leak. The fumigation device has the advantages of simple structure and small volume; the device can be assembled in use site so as to be convenient to move and use in different places or among different cabins in a granary. The invention also discloses a method of the local circulating fumigation device applied to local circulating fumigation.

Description

technical field [0001] The invention relates to a local circulation fumigation method using a local circulation fumigation device, which belongs to the technical field of grain storage. Background technique [0002] Storage pests not only eat food, increase food loss, reduce food quality and nutritional value, but also pollute food, seriously affecting the quality and safety of stored food. [0003] The principle of handling pests in storage: "If there are insects in a part, deal with them locally; if there are insects in the whole warehouse, deal with the whole warehouse". The occurrence of pests has certain rules to follow. Usually, the pests gather in the local area first to generate heat. Therefore, local treatment is used to avoid the spread of pests to the whole warehouse, which can well reduce the number of times of fumigation of the whole warehouse, and reduce the number of grains in a storage period. The dosage can delay the deterioration of grain quality. [000...

AI Technical Summary

Problems solved by technology

The first two methods can only use aluminum phosphide as a fumigant at present, because the deliquescent speed of aluminum phosphide is very slow, and the natural permeability in the grain pile is poor, and an effective lethal concentration of pests cannot be formed, and the ideal insecticidal effect cannot be achieved. In desperation, the whole warehouse is often fumigated

Although the latter method is effective, the workload is huge, time-consuming and labor-intensive

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