Dry type anaerobic fermentation tank

Abstract

The invention discloses a dry type anaerobic fermentation tank, belonging to anaerobic fermentation equipment. Biogas slag and biogas slurry are added in a batching water-seal tank, a feed conveying assembly communicates the batching water-seal tank and a fermentation tank body, the fermentation tank body is internally provided with a feed-frame empty-mixing preventer driven by a first motor, a fermentation tank base is internally provided with a spiral discharging machine driven by a second motor, a screen, a wedge-shaped feed collecting groove and a heating pipe, an extrusion and discharge shell with a discharge hole is arranged on the side wall face of the fermentation tank base and is internally provided with a piston, a pressure spring and a spring seat, an end cover provided with a pressure regulating handle is arranged on the outer end face of the extrusion and discharge shell, the pressure regulating handle and the spring seat are connected together or in contact fit, one end part of the spiral discharging machine is located in the extrusion and discharge shell, a spraying connection pipe communicates a circulating pump and the fermentation tank body, and the circulating pump is communicated with a percolate tank. The tank has novel and reasonable structure, high production efficiency and wide applicable range, and is reliable to run and simple and convenient to use and operate.

Description

technical field [0001] The invention belongs to anaerobic fermentation equipment, and mainly relates to a straw dry fermentation device. Background technique [0002] The tank dry fermentation device is currently one of the main equipments used for anaerobic fermentation of straw to produce biogas in my country. It plays an active role in the treatment and comprehensive utilization of agricultural waste straw, the reduction of environmental pollution, and the improvement of rural living conditions and many other aspects. However, in the existing tank-type fermentation device, ①, there is no material mixing assembly, and the phenomenon of material overhead in the tank often occurs during operation, which affects the fluidity of the material and the efficiency of biogas production; ②, the piston pump is used to complete the fermentation of the material The discharge operation is not only expensive, but also consumes a lot of power, and the discharge is intermittent and the dis...

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Problems solved by technology

However, in the existing tank-type fermentation device, ①, there is no material mixing assembly, and the phenomenon of material overhead in the tank often occurs during operation, which affects the fluidity of the material and the efficiency of biogas production; ②, the piston pump is used to complete the fermentation of the material The discharge operation is not only expensive, but also consumes a lot of power, and the discharge is intermittent and the discharge efficiency is low. At the same time, the residual moisture in the material cannot be squeezed out during the discharge process; ③. The tank body adopts a mechanical closed structure, which cannot Realize the continuous feeding operation during the fermentation process of the dry fermenter, and the feeding operation is cumbersome

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