Doctor Blade Holder Air Tube

The doctor blade air tube is specially developed to provide stable air pressure support for doctor blades.

As a key component of the doctor blade cleaning system, it is responsible for transmitting continuous and stable air pressure to the doctor blade, adjusting the contact tightness between the blade and the roll surface—avoiding insufficient pressure that leads to incomplete cleaning or excessive pressure that scratches the roll. Widely used in all sections of paper machines, it is perfectly matched with various doctor blades holders.

Material of Doctor Blade Air Tube

The doctor blade air tube adopts a dual-material structure of high-quality rubber (inner layer) and canvas (outer layer), combined with professional sealing technology, which integrates the advantages of flexibility and durability, fully adapting to the specific working needs of doctor blades:

Rubber Inner Layer: Crafted from high-purity industrial rubber, it boasts excellent elasticity, air tightness and corrosion resistance. It can effectively resist erosion from water, pulp and chemical agents in paper mills, and has good pressure-bearing performance, which can maintain stable air pressure for a long time without air leakage. The good elasticity allows it to adapt to the slight movement of the doctor blade, ensuring gentle contact between the blade and the roll surface, and avoiding damage to the roll.

Canvas Outer layer: The outer layer is made of high-strength industrial canvas, which is wear-resistant, tear-resistant and tensile-resistant. It can effectively protect the rubber inner layer from abrasion, friction and external impact during use, preventing the rubber layer from aging, cracking or bursting, and greatly extending the service life of the air tube. The canvas material also has good moisture resistance, which can adapt to the humid working environment of paper mills.

Application Scope of Doctor Blade Air Tube

The doctor blade air tube is a dedicated accessory for doctor blades, widely used in various paper machine, covering all key sections that require doctor blade cleaning:

Forming Section: Used here to provide air pressure support for the doctor blade, adjusting the contact pressure between the blade and breast rolls, wire guide rolls, etc. It ensures the blade gently and effectively cleans residual pulp and fibers, preventing fiber accumulation and ensuring smooth paper forming.

Press Section: Suitable for this section, transmitting stable air pressure to the doctor blade, ensuring the blade fits closely with the press roll, efficiently removing excess water and pulp residues, protecting the press felt and the roll surface from damage, and maintaining stable operation of the press section.

Dryer Section: Applicable to the dryer section, the rubber inner layer has good heat resistance (adaptable to the normal working temperature of the dryer section), and the canvas outer ring can resist high-temperature friction, providing reliable support for the doctor blade, ensuring the blade stably cleans the dryer cylinder, avoiding scratches on the roll surface and ensuring uniform drying of the paper web.

Advantages of Sun Hong Doctor Blade Air Tube

Superior Air Tightness: The rubber inner layer is matched with professional sealing technology, effectively preventing air leakage during air pressure transmission, ensuring stable air pressure supply and proper contact between the doctor blade and the roll.

High Durability: The dual structure of rubber inner layer and canvas outer ring combines elasticity and wear resistance, the canvas outer ring effectively protects the rubber layer, preventing abrasion and tear, and extending the service life of the air tube.

Strong Environmental Adaptability: The rubber material is corrosion-resistant and moisture-resistant, and the canvas outer layer is wear-resistant and tensile-resistant, which can adapt to the humid, high-friction working environment of paper mills, not easy to age or damage.