Biogas fermentation device capable of realizing automatic temperature control

Abstract

The invention discloses a biogas fermentation device capable of realizing automatic temperature control. The biogas fermentation device comprises a fermentation assembly, a water heater, a water storage tank and a controller, wherein the fermentation assembly comprises a fermentation tank body, a water inlet pipe, a water outlet pipe, a motor, a speed reducer and a stirring shaft; a water inlet valve is mounted at the top of one side of the fermentation tank, and a water outlet valve is mounted at the bottom of the other side; a water inlet pipe of the water heater communicates with the water storage tank and is provided with a water pump; a temperature sensor is mounted in the fermentation tank body; the lower end of the stirring shaft penetrates into the fermentation tank body and extends to the bottom of the fermentation tank body; a plurality of semi-heart-shaped paddles are arranged at the periphery of the stirring shaft, and the bottom ends of the plurality of semi-heart-shaped paddles are fixedly connected with a circular ring; the motor, the temperature sensor, the water inlet valve, the water outlet valve and the water pump are all electrically connected with the controller. The biogas fermentation device capable of realizing automatic temperature control in the invention is good in automatic temperature control effect, and improves biogas yield and biogas quality.

Description

technical field [0001] The invention relates to the technical field of fermentation equipment, in particular to an automatic temperature-control biogas fermentation device. Background technique [0002] At present, the process of microorganisms decomposing and transforming organic matter into biogas under anaerobic conditions is called biogas fermentation. Biogas fermentation is a complex biochemical reaction process. It is divided into three stages: the first stage is the liquefaction stage, that is, microorganisms convert solid substances into water-soluble substances through the action of extracellular enzymes; the second stage is the acid production stage, and the soluble substances continue to liquefy under the action of intracellular enzymes. Decompose and transform into low-molecular substances, such as methanol, ethanol, formic acid, acetic acid, etc. At the same time, some hydrogen and carbon dioxide are released. In this stage, the main product is acetic acid, acc...

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Problems solved by technology

[0003] However, when the biogas fermentation device in the prior art is in use, the temperature in the tank is measured by the thermometer on the tank wall, and the water intake and discharge are controlled by manually operating the valve according to the data displayed by the thermometer, which has reached the control of the material temperature, and the human factor is relatively large. It is closely related to whether the adjustment is timely or not, often resulting in unstable temperature, resulting in unstable output, and then fluctuations in output quality

Moreover, most of the fermentation tanks in the prior art use general propeller blades to stir, and the uniformity is not very strong, which affects the fermentation quality.

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