Defibrator system and defibrination method thereof

Abstract

The invention provides a defibrator system and a defibrination method of the defibrator system, wherein the defibrator system comprises a feed hopper and a defibrator. The feed hopper is longitudinally arranged on the front end of a twin-screw extruder, a back-jet resisting device, a vertical drop hopper, a horizontal preheat tank with screw conveying, a belted screw feeder and the defibrator are sequentially arranged on the rear end of the twin-screw extruder, and steam balance control systems are arranged on inlet and outlet of the horizontal preheat tank. The defibrination method of the defibrator system comprises the following steps: feeding wood chips of a certain specification into the longitudinally arranged feed hopper; conducting primary dissociation and conquassation on the wood chips through dynamic extrusion of the twin-screw extruder; feeding the conquassated wood chips into the vertical drop hopper; conducting precooking on the conquassated wood chips dropping into the horizontal preheat tank by self-weight at temperature from 110 to 130 degrees centigrade in the horizontal preheat tank; feeding the precooked conquassated wood chips into the defibrator by the belted screw feeder through the screw conveying of the horizontal preheat tank; and forming wood fiber with high physical property after defibration of the defibrator. The defibrator system and the defibrination method of the defibrator system are high in using raw materials and capable of improving capacity by at least 50 percents.

Description

technical field [0001] The invention relates to a thermal grinding system and a pulp refining method thereof, and relates to thermal grinding production line equipment for grinding wood chips into wood fibers and a production method thereof. Background technique [0002] In the production of fiberboards such as medium density fiberboard (MDF), heat grinding is the most critical process for fiber formation, and the shape of fibers directly affects the quality of MDF. The raw material for fiber thermal grinding requires that the size of the thermally ground wood chips is uniform and the cut is smooth. The specifications are preferably 20-25 mm in length, 10-30 mm in width, and 2-5 mm in thickness. If the wood chips are too large, it is difficult to soften during the refining process, and it is not easy to soften evenly. After heat grinding, there will be some thick stems mixed in the fibers. In the prior art of grinding wood fiber thermal grinding production line, as the pub...

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Problems solved by technology

[0004] The problems in the prior art are: in the process of making wood chips through the whole grinding system into wood fibers, the thermal mill consumes a lot of power and uses a lot of water, and the raw materials of wood chips are easy to carbonize due to cooking under high temperature and high pressure.

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