Vertical double-roller extrusion granulator

Abstract

The invention relates to the technical field of granulation equipment, and discloses a vertical double-roller extrusion granulator. The vertical double-roller extrusion granulator comprises a granulation tank and supporting legs, wherein the supporting legs are fixedly installed on the two sides of the bottom of the granulation tank, the granulation tank is formed by stacking two semicircular rings, and a discharge port is formed in the bottom of the granulation tank. Compared with the prior art, an upper roller is arranged above a lower roller; radial force required by rolling is provided byutilizing the gravity of the upper roller; consumption caused by a hydraulic system is reduced; furthermore, the production cost is reduced, meanwhile, unparallel roller gap caused by instability of ahydraulic system is reduced; the problem that the quality of powder particles is reduced due to gap change is solved, the relative positions of the lower roller and the upper roller are fixed throughmatching arrangement of the upper roller and the lower roller, then it is guaranteed that the positions of the lower roller and the upper roller cannot be changed in the operation process, the parallelism of the gap between the lower roller and the upper roller is guaranteed, and the consistency of the size and density of the powder particles is improved.

Description

technical field [0001] The invention relates to the technical field of granulation equipment, in particular to a vertical pair-roll extrusion granulator. Background technique [0002] With the improvement of environmental protection requirements and the automation of the production process, the pollution caused by powder granulation, and the improvement of labor operating conditions, roller extrusion granulation has become the main method at present, which can effectively increase the porosity and specific surface area of ​​the product. And improve the physical properties of the product, avoid segregation, air bubbles, pulsation, agglomeration, bridging and other undesirable phenomena in the subsequent operation process (drying, screening, metering, packaging) and use process (measurement, batching, etc.), and roll extrusion The granulator uses a pair of parallel and counter-rotating rollers to compact the powder falling from above, and uses the arc-shaped notches on the rol...

AI Technical Summary

Problems solved by technology

[0003] The paired roll extrusion granulator uses the forced cone screw feeding mechanism to feed the rolls, but the uniformity of the powder between the paired rolls cannot be guaranteed during the feeding process, and it is easy to cause the density of the powder to be different, which affects the particle size. At the same time, the gap between the counter rolls is offset, which leads to inconsistent particle size and affects the operation of the counter rolls

[0004] During the operation of the roll, it is necessary to use the hydraulic cylinder, accumulator and hand pump to provide radial force, but the hydraulic system is prone to pressure drop during use, and cannot provide stable radial pressure for the roll. At the same time, once a single hydraulic cylinder The action is not flexible, and the gap between the two rolls becomes larger, which further leads to a decrease in the quality of the powder

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