Fermentation tank with de-foaming function

Abstract

The invention discloses a fermentation tank with a de-foaming function. A stirring shaft is arranged in the fermentation tank; a stirring paddle is arranged at the bottom end of the stirring shaft; a floating plate capable of floating on a fermenting solution is sleeved on the upper part of the stirring shaft; the bottom of the floating plate is connected with a bottom wall of the fermentation tank through an elastic rope; the floating plate is capable of moving up and down relative to the stirring shaft; the length of the elastic rope is less than the height of the fermentation tank; the bottom of the floating plate is bestrewed with downward protruded spikes; an eccentric gear is arranged above the floating plate; the eccentric gear is connected with a driving motor through a rotating shaft; a distance from the axis of the eccentric gear to the bottom of the fermentation tank is less than or equal to the sum of the maximal distance from the axis of the eccentric gear to the edge of the eccentric gear and the length of the elastic rope. According to the invention, foams can be effectively eliminated, the environmental problem caused by a large amount of foam overflow can be avoided and the contamination possibility is reduced.

Description

Technical field [0001] The invention belongs to the technical field of biological engineering machinery. Specifically, it relates to a fermentation tank with defoaming function. Background technique [0002] In the process of aerobic biological fermentation, due to the aeration and agitation and the carbon dioxide produced by the microorganisms' own metabolism, the culture solution produces a lot of foam. A large amount of foam will bring more harm to production: 1. It will reduce the aeration effect; 2. It may also cause a large amount of culture solution to escape, causing waste and environmental pollution; 3. The foam will rise to the top of the pot and it will leak from the shaft seal. Causes the risk of infection. [0003] The method of defoaming can be divided into mechanical defoaming and chemical defoaming. Mechanical defoaming mostly uses scraper type, disc type, etc., which consumes too much energy. [0004] Chemical defoaming is to add defoamer to the fermentation brot...

AI Technical Summary

Problems solved by technology

Excessive use of antifoaming agents will leave residues in fermented products, which will affect human health after consumption

Moreover, the defoamer is expensive, and a large amount of use will increase the production cost

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