Sterile air-discharging device in production process of canned foods and process thereof

Abstract

The invention discloses a sterile air-discharging device capable of improving the sterilization effect in the production process of canned foods and a process thereof. The sterile air-discharging device comprises a sterilization pot, wherein the bottom and the top of the sterilization pot are communicated with a water pipeline; the water pipeline is connected with a circulated water pump and a circulating valve in series; and a hot water tank is communicated with the sterilization pot. The sterile air-discharging device is also provided with a hot water recovery pipeline which is communicated with the water pipeline, wherein the hot water recovery pipeline comprises the hot water tank, the circulated water pump and a hot water recovery valve. In the invention, an air discharging structure with water is adopted, the space in the sterilization pot is occupied by water, and the water is heated by steam on the one hand and pumped out by using the water pump on the other hand under the sealed condition of the sterilization pot, therefore, the aim of eliminating cold air in the sterilization pot with high efficiency is achieved.

Description

technical field [0001] The invention relates to sterilizing and exhausting equipment and technology in the production process of canned food. Background technique [0002] At present, the sterilization exhaust equipment and its technology in the production process of canned food adopt the high temperature steam sterilization exhaust method, which is carried out under the heating condition of pure steam. Use steam above 0.4Mpa to drive away the cold air in the sterilizer. This process operation method consumes a lot of steam and emits a lot of exhaust gas, resulting in high cost and polluting the environment. To achieve the best sterilization effect, there should be no air in the sterilizer. Air in the sterilizer will form a thermal insulation layer around the cans, because air is a medium with low heat transfer efficiency, so that the temperature of the steam cannot be directly transferred to the can. Canned food, "cold spots" will appear in the sterilizer, resulting in inc...

AI Technical Summary

Problems solved by technology

Use steam above 0.4Mpa to drive away the cold air in the sterilizer. This process operation method consumes a lot of steam and emits a lot of exhaust gas, resulting in high cost and polluting the environment.

To achieve the best sterilization effect, there should be no air in the sterilizer. Air in the sterilizer will form a thermal insulation layer around the cans, because air is a medium with low heat transfer efficiency, so that the temperature of the steam cannot be directly transferred to the can. Canned food, "cold spots" will appear in the sterilizer, resulting in incomplete sterilization

Images