Device for improving closed fumigation effect of sulfuryl fluoride and using method of device

Abstract

The invention belongs to the technical field of fumigation insect prevention, and particularly relates to a device for improving the closed fumigation effect of sulfuryl fluoride and a using method of the device. The device comprises an out-of-bin flexible air bag arranged outside a bin and an in-bin flexible air bag arranged inside the bin, and the out-of-bin flexible air bag and the in-bin flexible air bag communicate with each other through a gas guide pipe; and a delivery port is formed in the out-of-bin flexible air bag, an exhaust pipe is arranged on the in-bin flexible air bag, a pipeline control valve and an electric gas transmission pump are arranged on the gas guide pipe, and an exhaust pipeline valve, an exhaust pipeline driving pump and an exhaust port are arranged on the exhaust pipe. The gas molecule density and the gas pressure of the gas in the bin are adjusted, the influence of the difference between the internal pressure and the external pressure of the bin on the gas tightness of the bin is reduced, and the fumigation effect of sulfuryl fluoride in the closed bin is improved.

Description

technical field [0001] The invention belongs to the technical field of fumigation and insect prevention, and in particular relates to a device for improving the airtight fumigation effect of sulfuryl fluoride and a use method thereof. Background technique [0002] With the acceleration of the domestic aluminum phosphide prohibition policy, sulfuryl fluoride fumigation and pest control have become an emergency alternative. Sulfuryl fluoride is a colorless, odorless, and toxic gas at normal temperature and pressure. With the characteristics of short air time and low toxicity, it can be applied to the fumigation and control of pests in warehouses. However, in the actual application process, the dosage of sulfuryl fluoride fumigation is too large, and the cost of purchasing and transportation of the medicine remains high. It has become a technical problem to reduce the dosage of the medicine and shorten the time of fumigation and insect control. [0003] In addition, the follow...

AI Technical Summary

Problems solved by technology

However, in the actual application process, the dosage of sulfuryl fluoride fumigation is too large, and the cost of purchasing and transportation of chemicals remains high. It has become a technical problem to reduce the dosage of chemicals and shorten the time of fumigation and insect control.

[0003] In addition, the following problems still exist in the use of sulfuryl fluoride: in the process of applying the fumigant sulfuryl fluoride inside the closed warehouse, due to the sulfuryl fluoride in the steel cylinder Rapid volatilization and gasification will lead to a rapid increase in the density and pressure of gas molecules inside the warehouse, especially when the temperature in the warehouse is higher than the ambient temperature outside the warehouse, and there is a large temperature difference between day and night during the fumigation process, the density of gas molecules in the closed warehouse will It is constantly changing. Since the air pressure inside the warehouse is obviously higher than the air pressure outside the warehouse and a pressure difference is formed inside and outside the closed warehouse, the existence of the pressure difference between the inside and outside of the warehouse directly affects the stability of the air tightness of the warehouse. Fumigation Gas can easily penetrate and escape from the warehouse through sealing materials, various gaps and wall capillary pores

Images