Vertical mixing fermentation tank

Abstract

The invention provides a vertical mixing fermentation tank which comprises an upper cover, a tank body, a mixing discharging device, a feeding device, a blower device and a ventilation device, wherein the mixing discharging device comprises a hollow mixing shaft, a plurality of mixing blades connected onto the mixing shaft and a ratchet mechanism at the bottom of the tank body; the mixing blades attached to the bottom of the tank body have functions of discharge blades; the mixing blades are hollow, and air outlets are formed in the mixing blades; and the hollow mixing shaft is connected with the ratchet mechanism at the bottom of the tank body, and the ratchet mechanism is pushed by a push-pull mechanism. The power required by a mixing motor of a large fermentation tank is remarkably reduced by changing mixing and transmission manners, the mechanical structure is simplified while energy consumption is reduced, the probability of failures of a machine is reduced, and the vertical mixing fermentation tank is suitable for omnibearing uniform mixing and easy discharging of the large fermentation tank.

Description

technical field [0001] The present invention relates to a fermenter, more particularly, to a large fermenter. Background technique [0002] Fermentation tanks generally refer to devices used in industry for microbial fermentation. From the perspective of the fermentation content, there are currently two types of fermenters, one is a liquid fermenter and the other is a solid fermenter. Both of them need to use a motor to achieve stirring. Depending on the viscosity of the liquid and the size of the fermenter, the power of the motor required for the stirring of the liquid fermenter ranges from 10 to 100 kilowatts; there is no mature technology for the stirring of the solid fermenter. At present, there are mainly small fermenters and horizontal fermenters. For medium-sized fermentation tanks with type stirring, the driving force of the mixing system is mainly realized by the motor driving the reducer to generate huge torque. Generally speaking, for solid fermentation tanks of ...

AI Technical Summary

Problems solved by technology

In this process, because the mixing system needs to stir and turn the whole tank of materials, the resistance of the mechanical stirrer is relatively large, and the driving power is relatively high, generally 2-4kw / m 3 , the driving motor needs a lot of power, and the reducer is huge and complicated, which is a huge burden for large solid fermentation tanks and is prone to failure

[0006] Especially for large-scale fermentation tanks, such as large-scale fermentation tanks with a tank diameter of 2-20 meters and a height of 2-12 meters, it is difficult to achieve uniform and thorough mixing with the existing mechanical stirring method, and the energy consumption is extremely high. Huge, low production efficiency, prone to failure

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