The blind hole roller is a kind of equipment used in the pressing part of paper machine. Its main feature is that there are blind holes on its surface.
The blind hole roller is a device used in the pressing part of the paper machine. Its main feature is that it is equipped with blind holes on the surface. These blind holes can be used to store water, and the water inside the blind holes is discharged outward by the centrifugal force generated when the roller rotates. In addition, the surface of the blind hole roller may also be provided with grooves, which can guide the water flow and thus improve the dehydration efficiency.
The main function of the blind hole roller is to improve the efficiency in the pressing and dehydration process of paper. By storing water through blind holes and discharging it under the action of centrifugal force, it can replace the traditional vacuum system to a certain extent, simplify the structure of the paper machine, and reduce operating costs. At the same time, the setting of the grooves can also improve the dryness of the paper web and further improve the papermaking efficiency.
The structure of the blind hole roller usually includes a roller body, a base glue and a surface glue. The thickness between the base glue and the surface glue is required to be consistent to ensure uniform transmission of pressure. The connecting component is used to connect the roller body to the roller frame for rotary dehydration. The blind holes and grooves on the blind hole roller can be designed as needed, for example, the dehydration effect can be optimized by changing the depth and spacing of the holes.
Compared with other types of press rolls, blind hole rolls have obvious performance advantages.
First, the blind hole structure can disperse pressure and reduce stress concentration, thereby extending the service life of the roll.
Second, the air in the blind hole can prevent the water in the press area from entering, which helps to maintain the water storage capacity and drainage smoothness of the blind hole.
Finally, by adjusting the shape of the hole (such as a cone), the roller’s ability to resist linear pressure can be further improved, and the smoothness of paper web dehydration can be improved.
1. A cheapest wide area press,
2. The wide press area not only prolongs the dehydration time, which is 2-4 times that of ordinary presses,
3. Using higher linear pressure, so more water can be squeezed out of the paper sheet
Roller material: cast iron HT250, 300, 350
Axle head: bearing with 1:12 cone design hydraulic oil withdrawal hole
Roller coating: rubber
Rubber hardness: Shore A97±2°
Wall thickness: customized
Clad thickness: customized
Blind hole diameter: double helix hole layout, hole diameter 3mm, opening rate: upper roller 24%, lower roller 24%, hole depth 9mm, 11mm
We will contact you within 1 working day, please pay attention to the email with the suffix “@jennypapermachine.com”.
