High-efficiency vertical fermentation tank

Abstract

The invention relates to an efficient and vertical fermentation tank and belongs to the technical field of fermentation devices. The fermentation tank comprises a vertical tank body, a motor, a speed reducer driven by the motor and a stirring shaft, wherein the lower end of the stirring shaft penetrates into the tank body, multiple stirring blades are arranged at the lower end of the stirring shaft at intervals, multiple helical channels sequentially are formed in the inner wall of the tank body from top to bottom, each helical channel is formed by splicing multiple helical blades fixed to the inner wall of the tank body along the central axis of the tank body in a surrounding mode and is provided with a through channel for containing the corresponding stirring blades, one stirring blade is located at the lower end of the corresponding helical channel and is same as the corresponding helical channel in helix angle, a zooming plate inclining towards the stirring shaft is arranged at the upper end of the helical channel, and the surfaces of the helical blades and the zooming plates are coated with continuous polytetrafluoroethylene coatings. The fermentation tank has the advantages that the structure is simple, and the oxygen dissolution rate can be remarkably improved without increase of stirrer diameter and rotation speed.

Description

technical field

[0001] The invention relates to a fermentation tank, which belongs to the chemical technical field of fermentation equipment. Background technique

[0002] A fermenter is an external environmental device for microorganisms to grow, reproduce and form products during fermentation. It replaces traditional fermentation vessels and plays an important role in continuous scale production, increasing yield and yield.

[0003] In recent years, China's biological fermentation technology and equipment level have made great progress, but the fermentation tank has been a consistent system for decades, using standard mechanical stirring and ventilating fermentation tanks, and many factories are still using pure runoff mixing systems And tubular spargers generally have disadvantages such as high energy consumption, low dissolved oxygen rate, and low substrate conversion rate.

[0004] With the continuous use of high-yield strains, the structure of standard mechanically ag...

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