Eccentric input material of paste mill in high concentration

Abstract

A high-concentration pulp grinder with eccentric feeding inlet is composed of casing, front end cover, feeding screw, rotary and fixed grinding discs with grinding teeth on their opposite surfaces, grinding gap regulator, and drive unit. Its advantages are not blocking and long service life of mainshaft.

Description

(1) Technical field [0001] The invention relates to a high-consistency pulping and pulping equipment, in particular to an eccentric feed high-consistency mill capable of grinding various fiber materials such as wood chips and grass chips into pulp or refining and thermally dispersing high-consistency pulp. pulper. (2) Background technology [0002] Ordinary high-consistency refiners have a feed screw fixed in front of the front cover of the shell, and a fixed grinding disc is fixed behind the front cover and concentric with the feed screw. Feed hole for feed screw to penetrate. The shell is connected with the bearing box of the main shaft. The shaft end of the main shaft in the shell is fixed with a circular moving disc. The rotating disc is installed on the moving disc. A stuffing box or a mechanical seal is used between the shell and the main shaft. The grinding plate gap adjustment mechanism is used to adjust the gap between the rotating grinding plate and the fixed gri...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the poor fluidity of high-concentration fiber raw materials, the feeding screw and the fixed grinding plate are concentric, and must first pass through the feeding area in the center of the grinding plate and have a certain gradient before entering the plane refining area for refining. In the crushing and deflaking area, the high-concentration fiber raw materials can pass through the crushing and deflaking area and enter the plane refining area completely relying on the strong pushing of the feeding screw. discus” solid material block and cannot enter the plane refining area; on the other hand, the strong pushing force of the feeding screw acts on the rotating disk, which increases the rotation resistance of the disk and the main shaft, and the energy consumption of refining is greatly increased. increase, but also increase the main shaft load, shorten the life of the main shaft bearing, and increase the energy consumption of refining

[0006] 2. Due to the use of stuffing box or mechanical seal between the shell and the main shaft of ordinary high-consistency refiners, and the fluidity of high-consistency fiber raw materials is very poor, it is difficult for the refined pulp to be discharged from the pulp outlet on the shell. Even if the pulp outlet blade is set on the moving plate, the pulp after grinding is often blocked in the pulp outlet and difficult to discharge

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