Heat pump vacuum drying machine capable of working continuously

Abstract

The invention discloses a heat pump vacuum drying machine capable of working continuously. The heat pump vacuum drying machine capable of working continuously comprises a heat pump drying system and a vacuum system; the heat pump drying system is used for promoting circulating flowing of dry air and heating the dry air flowing in a circulating manner, and therefore to-be-dried materials placed in the heat pump drying system can be subjected to drying treatment, and dried materials are obtained; and the vacuum system is connected with the heat pump drying system and is used for placing the to-be-dried materials into the heat pump drying system and isolating the interior of the heat pump drying system from the outside air in the process when the dried materials are taken out of the heat pump drying system, and the vacuum degree in the heat pump drying system is maintained. The heat pump vacuum drying machine capable of working continuously can achieve continuous drying treatment on materials in various batches, unnecessary energy consumption and heat losses caused when the materials are replaced are avoided, it is avoided that oxygen rich in the outside air makes direct contact with the to-be-dried materials in a drying box, the generated oxidization reaction is reduced, and the content of nutritional ingredients in the materials is guaranteed.

Description

technical field [0001] The invention relates to the technical field of heat pump drying, in particular to a continuously working heat pump vacuum dryer. Background technique [0002] At present, heat pumps have been widely used in drying fields in various industries because they can effectively absorb heat from low-grade heat sources and release heat to high-grade heat sources. [0003] At present, the commonly used heat pump dryers all work under normal pressure, and mostly dry the materials to be dried in batch mode. At the same time, the commonly used heat pump dryer directly adopts the form of opening the side door to replace the material, that is, the dried material is directly taken out from the side door and put into the material to be dried. During the material replacement process, the drying box of the heat pump dryer The temperature will drop sharply, causing the heat in the drying box to re-dissipate into the atmosphere, causing serious energy consumption and los...

AI Technical Summary

Problems solved by technology

At the same time, the commonly used heat pump dryer directly adopts the form of opening the side door to replace the material, that is, the dried material is directly taken out from the side door and put into the material to be dried. During the material replacement process, the drying box of the heat pump dryer The temperature will drop sharply, causing the heat in the drying box to re-dissipate into the atmosphere, causing serious energy consumption and loss

At the same time, the oxygen rich in the external air directly contacts the materials to be dried in the drying box. Due to the oxidation reaction at high temperature, the reducing substances inside the materials will also lose their biological activity, and the reducing substances inside the materials will be brought into contact with each other. Serious damage, resulting in a serious drop in the nutritional content of the material

Images