Air Cushion Headbox For Paper Machine

Headbox is a very important part for paper forming. The advantage of the air cushion headbox is that it is easy to maintain and good operation, easy to clean, design is simple and reliable, high standard, quasi-production. Different types of paper are using different type of headbox to provides better production results. 

The double homogenizer is an air cushion headbox that can be used for a wide range of speeds , tightly structured, easy to operate, flow ratio of 1:2.5. The slurry is fed through a stepped orifice through a square cone tube. It is evenly distributed into the human box, and there are two homogenizers with different opening rates in the box as a rectifier, and a spray pipe is installed above the box, the front wall overflow is used to prevent air bubbles from being brought to the net, to ensure that the pulp speed is stable, according to the requirements of the paper machine working speed, by adjusting the air pressure above pulp and working with DCS to ensure automatic work on machine speed and pulp flow speed. The upper lip plate can be moved forward and backward, up and down, and the L/D ratio can be adjusted. Obtain different lip openings and appropriate net point placements. The lips are made with a small vertical lip plate, and equipped with a micro-caliber table, it can be adjusted according to the horizontal width of the paper. 

Air cushion Headbox main parts as blows:

Slurry manifold, front wall, rear wall, side wall, top cover and bottom beam 

Order ladder diffuser 

Double homogenizing rollers 

Spray tube 

Lip edge, seamless fine-tuning mechanism 

Meters and automated control systems

Headbox control system adopts advanced decoupling and negative differential pressure technology, which is one of the main components and made from famous foreign companies, it mainly controls the height of the internal liquid level and the speed of the slurry on the net ensure that the entire control system runs stably and high precision.

The headbox control system is designed according to the characteristics of China's paper industry, structure is simple, the workability is stable, and the maintenance method is convenient.

The headbox control system has a high degree of automation, and the control function is relatively complete, and the control of the slurry speed is highly stable, and the slurry speed is self-controlled. Track the network speed, simple operation, suitable for medium to high speed paper machines.