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Controlled deflection roll, vibration performance adjustment method of controlled deflection roll, and method for equiping pressure accumulators of controlled deflection roll

A pressure accumulator and regulating roll technology, which is applied to calenders, textiles, papermaking, paper machines, etc., can solve problems such as slow response of pressure accumulators

Inactive Publication Date: 2014-12-31
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its pressure peaks may be suppressed in the channel system and not reach the membrane of the pressure accumulator at all
Even under the most favorable conditions, the reaction of the pressure accumulators arranged according to the prior art is very slow

Method used

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  • Controlled deflection roll, vibration performance adjustment method of controlled deflection roll, and method for equiping pressure accumulators of controlled deflection roll

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] figure 1 A sectional view of a hydraulic actuator according to the invention is shown, wherein the hydraulic actuator is designated with reference number 1 . The hydraulic actuator 1 , ie the support, comprises a piston part 2 which is inserted into a cylinder bore 22 arranged on a roller bearing 20 . A pressure space 16 separated by a seal 23 remains between the piston part 2 and the cylinder bore 22, into which a hydraulic medium (eg oil) is introduced in a known manner (eg via a flow channel 21 formed in the bearing). In the pressure space 16 . A load shoe 3 is arranged on the piston part 2 of the hydraulic actuator 1 , which is located in the space between the roller bearing 20 and the roller shell 4 . The roll is here a deflection regulating roll of a fiber web manufacturing machine or a fiber web post-processing machine, and here the hydraulic actuator 1 is formed by a support 3 via which the inner surface of the roll sleeve 4 is loaded. A deflection regulating...

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Abstract

#CMT# # / CMT# The roll has a roll shell (4) rotatably supported at a rotationally fixed roll carrier (20), and hydraulic adjusting units (1) arranged at the carrier. The roll shell is loaded by the adjusting units over a loading shoe (3), where the adjusting units comprise pressure accumulators (5a). The pressure accumulators are connected with the loading shoe, and valves (11) i.e. seat valves, are connected with the loading shoe for controlling the pressure accumulators. Flow paths (15) control the valves for closing and opening of a flow opening (10). #CMT# : # / CMT# Independent claims are also included for the following: (1) a method for controlling oscillation characteristics of a controlled deflection roll (2) a method for mounting a controlled deflection roll. #CMT#USE : # / CMT# Controlled deflection roll for a fiber web production machine and a fiber web aftertreatment machine (all claimed). #CMT#ADVANTAGE : # / CMT# The roll is retrofitted with the pressure accumulators by disassembly of the roll shells in simple and cost-effective manner. The roll is designed such that additional processing of the roll carrier for controlling the pressure accumulators is avoided. #CMT#DESCRIPTION OF DRAWINGS : # / CMT# The drawing shows a sectional view of a controlled deflection roll and a hydraulic adjusting unit with a pressure accumulator. 1 : Hydraulic adjusting units 3 : Loading shoe 4 : Roll shell 5a : Pressure accumulators 10 : Flow opening 11 : Valves 15 : Flow paths 20 : Roll carrier.

Description

technical field [0001] The invention relates to a deflection regulating roll for a fiber web manufacturing machine or a fiber web finishing machine, comprising a torsion-resistant support, a roll sleeve rotatably supported on the support, and a hydraulic actuator ( Stellglieder), i.e. the actuator, the hydraulic actuator is arranged on the support, and by means of this hydraulic actuator the roller shell can be loaded via the load shoe (Belastungsschuh) belonging to the hydraulic actuator, wherein at least one hydraulic The actuator is equipped with at least one pressure accumulator. [0002] The invention also relates to a method for adjusting the vibration characteristics of a deflection adjustment roll for a fiber web manufacturing machine or a fiber web post-processing machine, the deflection adjustment roll comprising a torsion-resistant bearing supported rotatably on the support The roller cover on the upper part and the hydraulic actuator, which is arranged on the supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21G1/02
CPCF16C13/028D21G1/0213F16C13/00
Inventor 塞波·库皮艾宁图奥莫·林纳兰塔
Owner VALMET TECH OY