Grinding screen machine

Abstract

A loosening-screening grinder for pulping in paper-making industry is able to loosen and grind pulp, separate light and heavy impurities from pulp, screen pulp and remove dregs, and is composed of casing, conic sleeve barrel for loosening and grinding pulp, screen drum, grinding-screening rotor, gap regulating mechanism and driver. It can be divided into three functional segments for cleaning, loosening-grinding and screening pulp. Its advantages include simplified process, less investment and energy consumption and low pulping cost.

Description

(1) Technical field [0001] The invention relates to a multifunctional comprehensive processing equipment for waste paper pulp, in particular to a fine-grinding and screening machine capable of purifying waste paper pulp, removing impurities, disentangling, refining and screening. (2) Background technology [0002] CN2289822Y (Chinese Patent No.: ZL 96248184.X) utility model patent discloses a kind of multifunctional thinner, which has a bearing support body and a housing fixed on the base, and the top of the front end of the housing is provided with a slurry inlet and a The bottom of the same plane as the slurry inlet is tangential to the discharge port. The discharge port is connected with the grit chamber through the discharge valve. There is a good slurry outlet in the middle and rear of the shell. The rear end of the shell is an end cover, and the top of the end cover is Tangential tailings outlet is provided, and dilution water inlet is provided in the center of the end...

AI Technical Summary

Problems solved by technology

[0005] 1. Before the slurry enters between the conical stator and the rotor for coarse grinding, only the heavy impurities in the slurry are removed, while the light impurities such as plastic and rubber in the slurry enter between the stator and the rotor along with the slurry , a part of light impurities will be ground and mixed into the good pulp through the screen drum, causing various paper defects, reducing the quality of paper, and sometimes causing the operation failure of the paper machine;

[0006] 2. The coarse fibers discharged during pulp screening contain light impurities such as plastics and rubber, which need to be re-screened to recover the fibers, which complicates the process and increases the energy consumption and cost of pulping;

[0007] 3. The oblique rib height at the front end of the rotor is low, which cannot effectively drive the slurry to rotate at a high speed, and heavy impurities such as sediment in the slurry cannot be separated cleanly, resulting in easier wear of the stator and rotor;

[0008] 4. The installation position and installation method of the stator and rotor make it inconvenient to replace after wear;

[0009] 5. After the rotor is worn out, it needs to be replaced as a whole, and the maintenance cost is relatively high

[0010] 6. The axial dimension of the rotor is long, and it is far away from the bearing support body, which is prone to vibration during operation and shortens the life of the bearing;

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