High-consistency hydraulic disc mill

Abstract

A high-consistency hydraulic disc mill comprises a spiral feed unit, a hydraulic adjusting unit and a high-consistency disc mill body, wherein the rotating speed of a conveying screw is adjusted by a variable-frequency and variable-speed motor, and feed quantity of the high-consistency disc mill is matched with the defibrination output of the high-consistency disc mill. The hydraulic adjusting unit is composed of an oil tank, a hydraulic pump, a solenoid directional valve, a pressure regulating valve, a pressure retaining valve, a hydraulic cylinder, a piston, a thrust cylinder, a cooler, the pressure regulating valve and a pressure gauge, wherein the hydraulic cylinder is fixed on a bearing body suspended frame, the piston is fixed on the thrust cylinder, one end of the thrust cylinder is fixed on an front bearing cover, and a mechanical limiting fine tuning nut is arranged at the other end of the thrust cylinder. The high-consistency disc mill body is composed of a machine shell, a machine cover, a fixed disc, a rotating disc, the bearing body suspending frame, a bearing body, a shaft, a coupler and a motor, wherein the fixed disc is fixed on the machine cover and the rotating disc is fixed on the shaft. Due to the fact that the hydraulic regulating unit which is provided with a pressure retaining return circuit regulates the advancing and the retreating of a knife and defibrination specific pressure, producing of high-consistency milled defibrination with the fixed specific pressure is achieved, energy is saved, and defibrination efficiency is improved.

Description

technical field

[0001] The invention relates to continuous high-consistency refining equipment used in the pulping and papermaking industry, in particular to high-consistency refining equipment for hydraulically adjusting the refining pressure, that is, a high-consistency hydraulic disc refiner. Background technique

[0002] In alkaline peroxide pretreatment pulping process (APMP) / alkaline sulfite pretreatment (CTMP) bleached chemical thermomechanical pulp (BCTMP) thermomechanical pulp (TMP) and other high yield pulping processes , high-consistency refining is an essential link; short-fiber grass pulp (bamboo pulp, reed pulp, wheat straw pulp, bagasse pulp and traditional Chinese medicine residue pulp), and secondary fiber waste paper pulp also need to use high-consistency beating in order to It better promotes the friction between fibers and fibers to make fibers split, retain the length of fibers and enhance the bonding strength of fibers. Therefore, choosing efficient,...

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