Introduce: What are the single equipments on the production line of papermaking machinery?

Main single equipment of papermaking machinery production line

According to the technological process, the papermaking production line can be divided into four sections: material preparation, pulping, papermaking and finishing. The core monomer equipment of each section is as follows:

First, the material preparation section

Grass cutter, reed cutter and peeler: handle raw materials such as straw, reed and wood.

Chipper: Chop wood into chips.

Chip screening machine and re-crushing machine: screen qualified chips and re-crush unqualified chips.

Bunker and belt conveyor: storage and transportation of raw materials.

Second, the pulping section (chemical pulp/mechanical pulp)

chemical pulping

Cooking pot/continuous digester: delignification of high-temperature cooking raw materials

Washing machine: vacuum washing machine, pressure washing machine, washing black liquor.

Screening equipment: pressure screen and vibrating frame screen to remove impurities in pulp.

Thickening equipment: thickener and screw extruder to improve pulp consistency.

Bleaching tower and pulp washer: pulp bleaching and washing.

Mechanical/chemical mechanical pulp

Disc refiner: Wood chips are ground into pulp.

Thermal mill: preheating+refining integration

Pulverizer, defibrator: fiber defibration and refining.

Third, the paper machine body (core section)

1. Streaming system

Slurry pool and pump

Slurry pump, rotor screen

Headbox (headbox): evenly distributing pulp, which is the key single equipment.

2. Forming section (wire section)

Forming net

Chest roll, couch roll

Vacuum suction box, vacuum roller

Mesh corrector and tensioner

3. Press section

Vacuum press roll, grooved press roll

Blind hole press, shoe press

Paper guide roller and pressure device

4. Drying Department

Dryer (large dryer/yankee dryers, etc.)

Steam condensate system

Dry network and dry network corrector

Hot air hood, air hood

5. Calendering Department

Ordinary calender

Super Calender and Soft Calender: Improve the smoothness and tightness of paper.

6. Winding section

Roll paper machine, roll paper cylinder

Automatic coil changing device

Fourth, complete the finishing section

Rewinding machine: rewinding a large roll into a specified width and diameter.

Paper cutter: cutting flat paper

Packer, stacker

Paper selection machine and detection equipment: online detection of paper defects.

Five, auxiliary public system equipment

Vacuum pump, air compressor

White pool, white water pump

White water recovery device, multi-disc filter

Sewage treatment related equipment (inclined screen, air flotation machine, etc.)