From the perspective of the appropriate carbon nitrogen ratio required for microbial fermentation, air dried cow dung has high carbon and low nitrogen, and air dried chicken dung has low carbon and high nitrogen. If the two are mixed in a certain proportion to achieve the appropriate carbon nitrogen ratio, the fermentation effect is better and the fertilizer content is richer. Under the conditions of lack of carbon materials such as furfural residue, air dried coal and humic acid, and abundant types of livestock manure, mixed fermentation of livestock manure is an excellent choice. In this way, the repeated construction and investment of sites and equipment can be avoided, and the local resource allocation can be effectively integrated, so as to improve the production capacity of organic fertilizer.
In order to add auxiliary materials conveniently and accurately in the production of cow dung organic fertilizer production line, the defecation pipe is connected with an auxiliary material mixing bucket, and an auxiliary material adding port is set on the top of the auxiliary material mixing bucket; The discharge port at the bottom of the auxiliary material mixing barrel is opposite to the feeding end of the screw mixing mechanism. Add the auxiliary materials according to the amount, mix them evenly, and then transfer them to the spiral mixing mechanism through the pipe at the bottom, and mix them with the dry materials conveyed in the dry material barrel to make pig manure organic fertilizer. The dry material in the dry material bucket is composed of straw, weeds, branches, leaves and other powdered materials, which are used to absorb the water in the fecal sewage, reduce the water in the fecal sewage, dry it, facilitate packaging and transportation, store it as raw material of cow manure for standby, and realize the purpose of resource transformation from liquid fecal sewage to solid.
Cow manure organic fertilizer equipment adopts three-stage screening. Small particles directly fall into the belt conveyor at the feeding port and flow into the disc granulator again, further tumbling increases; Medium sized particles enter the packaging link and are sold as finished products; Large particles are ground and broken, and then fall into the belt conveyor together with small particles, and then flow into the disc granulator for granulation. Therefore, the production line is of closed loop type.