Paddle stirrer with shell breaking function

Abstract

The invention relates to a paddle stirrer with a shell breaking function. The paddle stirrer comprises a rotating shaft and stirring paddles, the rotating shaft and the stirring paddles are connectedwith each other, and the stirring paddles are perpendicular to the rotating shaft; one end of each stirring paddle is fixedly connected with the rotating shaft, the other end of each stirring paddle is provided with a bucket-shaped blade, the edge of a bucket-shaped opening in each paddle is in a sawtooth shape, and the direction of the bucket-shaped openings of the blades is consistent with the force applying direction during forward stirring; the blades are provided with plate knives, the plate knives are arranged away from the bucket-shaped openings, the knife edge direction of the plate knives is consistent with the force applying direction during reverse stirring, and the stirring paddles are uniformly and spirally mounted on the rotating shaft along the axis of the rotating shaft. The paddle stirrer is especially suitable for a high-concentration continuous fermentation technology of mixed raw materials, easy stirring can still be achieved when the concentration of fermentation liquor is high, the shell breaking capacity is high, the electricity consumption is low, the energy consumption is reduced, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the field of biogas production, in particular to a stirrer tool inside a reactor, in particular to a paddle stirrer with a shell breaking function. Background technique [0002] In the process of biogas production, the fermentation raw materials inside the large-scale anaerobic reactor are usually easy to stratify when they are not stirred or not fully stirred, and the fermentation raw materials in the scum layer on the upper layer of the fermentation broth are prone to occur after a long period of accumulation. Crust phenomenon, the crust layer on the fermentation broth will have a major impact on the fermentation of biogas. In general, a stirrer is used for stirring. On the one hand, through stirring, the fermentation raw materials and the microorganisms are kept in sufficient contact, and at the same time, the temperature generated by the fermentation and the concentration of the uniform fermentation liquid are distributed, ...

AI Technical Summary

Problems solved by technology

In general, a stirrer is used for stirring. On the one hand, through stirring, the fermentation raw materials and the microorganisms are kept in sufficient contact, and at the same time, the temperature generated by the fermentation and the concentration of the uniform fermentation liquid are distributed, thereby improving the digestion efficiency of the fermentation raw materials and increasing the gas production. Shorten the reaction cycle of fermentation, on the other hand, effectively prevent the crusting of the scum layer of the fermentation broth, while the existing agitator often has low stirring efficiency and cannot effectively break the scum layer crusting when the fermentation broth is crusted As a result, the digestion efficiency of the fermentation raw materials is reduced, and finally because of the thickening of the scum layer, the reactor 4 cannot produce gas, and suffers from shutdown losses.

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