High efficiency operation principle of organic fertilizer rotary drum granulator

2022/08/24

 The technical process of npk production line can generally be divided into: raw material batching, raw material stirring, raw material granulation (drum granulator), granule drying, granule cooling, granule classification, finished product coating and finished product packaging. It is suitable for granulation of various raw materials such as compound fertilizer, medicine, chemical industry, feed, etc. The product has a high granulation rate.

In the npk fertilizer production line, the powdered raw materials need to be rolled into granules by a drum granulator. Most of the granulators in this step adopt a drum structure. The powder raw materials are placed in the drum, and the slurry or steam or water is sprayed into the drum through the spray pipe, and the liquid phase of the granulated material is increased to make the drum agglomerate into granules. In the production process, the viscosity of the granulation slurry is relatively large, and it is easy to stick to the inner wall of the drum. If these wall-bound substances are not cleaned in time, they will accumulate more and more, which will seriously affect the granulation.

The biological organic fertilizer equipment rotary drum granulator includes a frame, the frame is provided with a drum, the inner wall of the drum is provided with a plurality of sliding grooves extending along the axis direction of the drum, and the inner wall of the drum is also provided with a plurality of rubber pads , the opposite sides of the rubber pads are respectively extended into the adjacent sliding grooves, a sliding limit device is provided between the sliding groove and the rubber pads, the cylinder wall of the drum is provided with a guide hole, and the guide hole is sleeved with a limit rod, the limit There is an elastic clamping device between the rod and the drum; a counterweight is installed on the rubber pad, and the counterweight is located between the rubber pad and the drum; during the rotation of the drum, rotate to the upper rubber pad, and the counterweight Under the action, it overcomes the action of the elastic clamping device and moves downward, and when the limit piece is stuck into the limit groove again, the limit piece is stuck in the limit groove to prevent the downward movement of the rubber pad, and the When the downward movement is suddenly stopped, the effect of the rubber pad shaking is formed, which effectively prevents the slurry from sticking to the drum and improves the granulation efficiency.