Vacuum guide roller

Abstract

The invention relates to the field of paper manufacturing machinery, specifically to a vacuum guide roller. The vacuum guide roller is mainly composed of components such as a shell, a core shaft, sealing devices, bearing devices and so on, wherein the shell is sleeved outside the core shaft; through holes for interior and exterior of the roller shell communicate with each other are processed on the shell; two ends of the shell are equipped with the bearing devices; inside paths of the bearing devices are fixed on the core shaft; a hollow structure is arranged in an axial direction of the shaft, and elongated open holes are processed in part of the axial direction in the shell; and the sealing devices are mounted on the elongated open holes to contact an inner wall of the roller shell. According to the invention, the hollow core shaft sucks, dewaters and cleans carpets, at the same time, the roller shell can be supported by the bearing devices to rotate, relative movement between the roller shell and carpets of paper machines are reduced greatly, and sliding friction in a vacuum box can be removed so as to greatly power consumption and carpet consumption generated by friction of carpets; compared with the existing vacuum roller, the roller can not be equipped with a transmission device so as to simplify device configuration.

Description

technical field [0001] The invention relates to the field of papermaking machinery, in particular to a vacuum guide roller. Background technique [0002] The press part of the paper machine uses a felt to support the operation of the wet paper sheet. In order to ensure the performance and life of the felt, it is necessary to dehydrate and clean the felt in time to remove the sundries accumulated in the felt. The most commonly used press felt cleaning equipment today is the vacuum suction box and the vacuum roll. The vacuum suction box is mainly composed of the box body and the suction box panel. The structure is simple. The surface contact between the suction box panel and the blanket is relatively sliding. Under the suction of the vacuum pump, there is a large sliding friction between the suction box panel and the blanket. Force requires a large power consumption to overcome these friction forces, and the existence of sliding friction also leads to rapid wear of the felt. ...

AI Technical Summary

Problems solved by technology

In order to ensure the reliability of the seal between the suction box and the inner wall of the rotating housing, there is a certain contact pressure between the sealing strip of the suction box and the inner wall of the housing, forming sliding friction, and the sealing strip and the inner wall produce a "braking" effect. Overcome the "braking" effect caused by the sealing strip and the inner wall, and keep the linear speed of the outer surface of the shell and the speed of the felt in sync. The existing vacuum rollers are equipped with transmission devices, and the structure is complex

[0004] Compared with the vacuum suction box, the existing vacuum roll eliminates the sliding friction with the felt, and the loss of the felt due to sliding friction can be greatly reduced, but there is slippage between the vacuum roll shell and the sealing strip of the inner suction box Friction requires a certain amount of power, and the sealing strip is a vulnerable part that needs to be replaced and maintained regularly

Due to the complex structure of the existing vacuum roll, the value is high and the maintenance is difficult

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