Rapid fresh and wet grain drying method and device

Abstract

The invention provides rapid fresh and wet grain drying method and device. According to the rapid fresh and wet grain drying method provided by the invention, a method of combining vacuum precooling drying and far infrared heating drying is adopted so as to effectively dry fresh and wet grains with a high speed. With the adoption of the rapid fresh and wet grain drying device, the fresh and wet grains needing drying are put in a grain containing device in a cylinder grid shape, the grain containing device is internally provided with grain scraping plates which are circumferentially distributed, is arranged in a vacuum tank and is driven by a low rotational speed device to rotate so as to ensure that each grain is exposed in vacuum and irradiated by far infrared rays, and a far infrared heating device is installed in the center of the rotary grain containing device and fixed on the vacuum tank. With the adoption of the rapid fresh and wet grain drying method and device, fresh or wet grains are heated by infrared rays in a vacuum state, so that moisture in the grains can be rapidly evaporated until the grains contain safety moisture and the purpose of rapidly drying the fresh and wet grains can be fulfilled.

Description

technical field [0001] The invention relates to the field of fast drying methods and devices for fresh and wet grains. Background technique [0002] Food is the staple food of human beings, and it is an indispensable daily food for the people. It has a large demand and a large consumption, so the production volume is also huge. However, due to poor facilities, primitive methods, and backward technology, the post-harvest loss of agricultural products is astonishing. Statistics show that the current harvested grain loss rate exceeds 8%, and the loss is an astronomical figure. For a long time, many experts, scholars and agricultural product processing workers have been committed to grain drying and processing, and have produced many grain drying equipment, such as air drying, hot air drying equipment, dryers, infrared drying, microwave drying, heat pumps, vacuum drying towers, etc., but The drying speed is slow and the drying time is long, especially the drying speed of some d...

AI Technical Summary

Problems solved by technology

However, due to poor facilities, primitive methods, and backward technology, the post-harvest loss of agricultural products is astonishing. Statistics show that the loss rate of harvested grain currently exceeds 8%, and the loss is an astronomical figure.

For a long time, many experts, scholars and agricultural product processing workers have been committed to grain drying and processing, and have produced many grain drying equipment, such as air drying, hot air drying equipment, dryers, infrared drying, microwave drying, heat pumps, vacuum drying towers, etc., but The drying speed is slow and the drying time is long, especially the drying speed of some drying equipment is very slow, and the precipitation rate is 0.5% moisture / hour or 1% moisture / hour. Wet food (such as 35% moisture) should be dried to a safe moisture content (such as 14%) takes up to ten hours, and the facilities are huge with boiler rooms, grain depots, drying towers, etc. In addition, the waste and loss of grain during the process of harvesting from the field to reaching safe moisture is also very serious. The existing methods None of the technologies has solved the time and quality problems of grain drying, resulting in staggering losses

Images