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A high-efficiency dissolved oxygen stirrer for a fermentation tank and a fermentation tank

A fermenter and agitator technology, applied in the field of fermenters, can solve the problems of low specific gravity of gas, destruction of bacteria in fermenters, low efficiency of dissolved oxygen, etc., and achieve the effect of reducing shear damage.

Active Publication Date: 2019-01-15
河北乐开节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the existing agitator, mainly low dissolved oxygen efficiency and high energy consumption. The stronger the dispersion effect is, when the center of the fermenter gets enough dissolved oxygen, the outer edge of the stirring blade must have been in a state of excessive waste, and the transitional shearing action will also cause damage to the bacteria in the fermenter
Furthermore, due to the small specific gravity of the gas, relying on the stirring paddle to shear the bubbles to make the bubbles plug into the liquid is also very inefficient.

Method used

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  • A high-efficiency dissolved oxygen stirrer for a fermentation tank and a fermentation tank
  • A high-efficiency dissolved oxygen stirrer for a fermentation tank and a fermentation tank
  • A high-efficiency dissolved oxygen stirrer for a fermentation tank and a fermentation tank

Examples

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Effect test

Embodiment 1

[0033] see figure 2 As shown, it is a fermentor high-efficiency dissolved oxygen stirrer 10 according to a preferred embodiment of the present invention, which is installed in the fermenter 20 and includes a stirring shaft 11, and the stirring shaft 11 is installed at an inclination angle α relative to the central axis L of the fermenter In the fermentation tank 20, the inclination angle α is 1-2° or 2-4° or 4-5°, such as figure 2 2° shown.

[0034] combine figure 1 , Figure 4 , Figure 5 As shown, the agitator 10 also includes a multi-layer blade 12, which is a multi-layer propeller blade. The multi-layer propeller blade 12 is that the blades 121 of each layer are arranged in one layer along the helical line, but each layer is separated (such as Figure 4 ); or each blade 121 is arranged in a form that is connected end-to-end from top to bottom (such as Figure 5 ), the paddle 12 can be provided with 1-10 layers, preferably 2-5 layers. Preferably, each layer of blad...

Embodiment 2

[0038] see image 3As shown, it is a fermentor high-efficiency dissolved oxygen stirrer 10 according to a preferred embodiment of the present invention, which is installed in the fermenter 20 and includes a stirring shaft 11, and the stirring shaft 11 is relatively offset from the central axis L of the fermenter and is installed in the fermenter. In 40, the deviation D is about 2% to 3% or 3 to 4% of the diameter of the fermenter, more preferably 1 / 40.

[0039] combine figure 1 , Figure 4 , Figure 5 As shown, the agitator 10 of this embodiment includes a multi-layer blade 12, and the blade 12 is a multi-layer propeller blade. The multi-layer propeller blade 12 is that the blades 121 of each layer are arranged in one layer along the helical line, but each layer is separated (such as Figure 4 ); or each blade 121 is arranged in a form that is connected end-to-end from top to bottom (such as Figure 5 ), the paddle 12 can be provided with 1-10 layers, preferably 2-5 layer...

Embodiment 3

[0044] Regarding the structural design, size, rotational speed, etc. of the paddle 12 and the blade 121 in this embodiment, reference may be made to Embodiment 1-2. In this embodiment, on the basis of the above-mentioned embodiment, the stirring shaft 11 is deviated from the central axis L of the fermenter by a certain distance and is installed at an inclination angle α relative to the central axis L, and the inclination angle is 1-2° or 2-4° Or 4 to 5°, and the deviation distance D is about 2% to 3% or 3 to 4% of the diameter of the fermenter.

[0045] Since these two technical features can be combined without contradicting, contradicting or canceling each other, the technical effects and working principles of this embodiment can be superimposed with the relevant descriptions of Embodiments 1-2, which are not included here. Repeat.

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Abstract

The invention relates to a high-efficiency dissolved oxygen stirrer of a fermentation tank, wherein the stirrer is arranged in the fermentation tank and comprises a stirring shaft, and the stirring shaft is installed at an inclined angle with respect to the central axis of the fermentation tank; or the stirring shaft is mounted offset from the central axis of the fermentation tank; alternatively,the stirring shaft is offset from the central axis of the fermentation tank and mounted at an inclined angle with respect to the central axis. The high-efficiency dissolved oxygen stirrer of the fermentation tank of the invention greatly reduces the electric energy consumption and saves the production cost under the condition that the dissolved oxygen degree of the stirrer is comparable to that ofthe existing stirrer.

Description

technical field [0001] The invention relates to the technical field of fermentation tanks, in particular to a stirrer and a fermentation tank with energy-saving and high-efficiency dissolved oxygen stirring functions. Background technique [0002] Fermentation tanks are very common equipment in the food processing industry, the pharmaceutical manufacturing industry, and the microalgae energy industry. Fermentation tank refers to a device used in industry for microbial fermentation. Its main body is generally a cylindrical cylinder made of stainless steel plate, and its volume is from 1 cubic to hundreds of cubic meters. Fermentation often has temperature requirements, so a heating or cooling device is installed outside the fermenter. Generally, a jacket is set outside the fermenter or a heat exchange coil is set inside and outside the fermenter, and a jacket or heat exchange coil is set on the coil. The inlet and outlet of the cold and heat medium make the fermentation tan...

Claims

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Application Information

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IPC IPC(8): C12M1/02C12M1/00
CPCC12M27/06
Inventor 赖庚音张建中陆伟新陈斌周洪杰漆旻华吕朝辉陈书菊
Owner 河北乐开节能科技股份有限公司
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