Grinding slice of defibrator

Abstract

The invention discloses a grinding slice of a defibrator, wherein grinding teeth in a crushing region are separated from those in a coarse grinding region, a ring-shaped buffering deslagging slot is formed between the grinding teeth of the two regions, and the grinding teeth in the crushing region are arc-shaped. According to the grinding slice of the defibrator, the grinding teeth can be effectively prevented from being damaged by hard impurities, the efficiency is improved, the service life of the grinding slice is prolonged, and the power consumption is reduced.

Description

technical field [0001] The invention relates to a grinding sheet for a mill, in particular to a grinding sheet for a thermal grinder for producing fiber density boards. Background technique [0002] In the production of fiber density board, a thermal mill is used to separate the wood chip fibers from the cooked wood chips. The static grinding disc and the dynamic grinding disc of the thermal mill work together under the action of mechanical power. In the process of wood chip fiber separation, the grinding disc plays an important role. most crucial role. The grinding disc of the prior art thermal mill is divided into three tooth zones: crushing zone, rough grinding zone and fine grinding zone. Grinding and separating to achieve individual fiber bundles and fine fiber bundles. The fine grinding zone is to further dissociate the fiber bundles from the rough grinding zone to achieve smaller grades of fibers to meet the needs of manufacturing fiber density boards. [0003] In t...

AI Technical Summary

Problems solved by technology

Its disadvantage is that a large number of wood chips and fiber bundles gather between the teeth of the crushing area during work. Due to the action of extrusion and resistance, the wood chips and fiber bundles between the teeth of the crushing area form a knot shape, which has poor fluidity and is difficult to move to the next area. Flow, that is, the wood chips and fiber bundles gathered between the teeth in the crushing area are difficult to flow into the coarse grinding area and the fine grinding area, thereby increasing the resistance of wood chips entering the grinding area and increasing power consumption

In addition, the raw materials are often mixed with hard impurities such as screws, nuts, stones, etc., as the raw materials enter the mill, they will be directly pushed to the coarse grinding area and In the fine grinding area, hard impurities forcibly pass through the grinding teeth in the rough grinding area and the fine grinding area or remain in the crushing area, causing serious damage to the grinding teeth, resulting in a rapid decrease in the fiber decomposition efficiency of the grinding disc, a decrease in output, and a reduction in the service life of the grinding disc. Short, and power consumption increases

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