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Shandong Haitian paper machinery co. LTD

General manager: guo donglei

Contact person of paper machine: shang zhenxi 13589536936 bi yankai 13953324900

Rewinding machine contact person: li weidong 13335129266

Address: no. 320, xinghua road, zibo wang village, shandong province

Zip code: 255311

Telephone: 0533-6682000/6682999

Fax: 0533-6680898

Website: www.haitianjx.com www.haitianmachinery.com

Email:haitianjx@126.com


What are the main reasons for uneven pressing and dehydration

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What are the main reasons for uneven pressing and dehydration

Release date:2018-06-12 Author: Click:

  

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(1) middle height error of roller. The calculation of the middle height of the compensated roller ------ or the shape of the middle height curve of the press roller is not grinded correctly, resulting in uneven contact between the two rollers. In the case of this phenomenon, consideration should be given to regrinding medium height.


(2) changes in pressing operating conditions. The middle and high volume of the press roller only corresponds to a certain line pressure. In the process of production, due to the change of technological conditions, different degree of press blanket, as well as some temporary requirements in operation, it is necessary to adjust and change the pressure of press line appropriately. Once the load of the press roll changes, the press of the original medium and high volume can not adapt to it, resulting in uneven pressure roll, resulting in uneven paper width dehydration.


(3) changes in performance of pressing blankets. In production, after a period of use, the blanket thickness is often inconsistent due to uneven wear and wear, or the blanket is partially blocked by stuffing, resulting in reduced compressibility of the blanket, or due to equipment defects or improper operation, the blanket standard line bending and local relaxation, resulting in uneven blanket dehydration.


(4) uneven quantification at the net part will lead to uneven distribution of water on the press page and lead to uneven water distribution at the outlet. This situation should be found in the network to solve the reasons.


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