What are the factors that affect the water line length of paper machine?

There are many factors that affect the length of the waterline.

Pulping, chemical industry, paper machine suction box cutting, lip opening, etc., all have an impact on the waterline. At the same time, the usage time and cleanliness of the net also affect the waterline.

The instability of water head on the water line will make the sealing and uniformity of water head worse. If the water supply line is too long, air consumption will also increase. There are many ways to adjust the waterline. It needs to be tested by practice.

Long water line, mainly due to high beating degree, because of the short fiber and the formation of viscous slurry, or raw materials are not good. Second, there are some technological differences in the online part. Such as pulp pump speed, lip vertical opening, horizontal opening, pulp to wire speed ratio, mesh selection, single layer rejection rate, etc. Then there is the dehydrated element.

Pulping, chemical industry, paper machine suction box cutting, lip opening, etc., all have an impact on the waterline. At the same time, the usage time and cleanliness of the net also affect the waterline.

The instability of water head on the water line will make the sealing and uniformity of water head worse. If the water supply line is too long, air consumption will also increase. There are many ways to adjust the waterline. It needs to be tested by practice.

Long water line, mainly due to high beating degree, because of the short fiber and the formation of viscous slurry, or raw materials are not good. Second, there are some technological differences in the online part. Such as pulp pump speed, lip vertical opening, horizontal opening, pulp to wire speed ratio, mesh selection, single layer rejection rate, etc. Then there is the dehydrated element.

1. In the high vacuum moisture absorption water tank, the higher the vacuum degree, the more obvious the dehydration is, and the shorter the water level moves forward; otherwise, the water level will move backward and become longer.

2. High ration, large amount of sizing in the headbox, fast speed and delayed dehydration. Causes the waterline to lengthen.

3. In origami machine, the bottom water line should be controlled before the core bottom composite roller; otherwise, the composite damage will occur and the supporting pulp will be shaken. If it is serious, the pulp will run to the core layer tray along with the mesh, affecting the production.

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