The headbox is a key part of a modern paper machine. Its function is to ensure that the paper material is evenly and stably connected to the Internet along the full width of the paper machine, and to ensure proper flow and flow rate, so as to form a uniform wet paper sheet on the Internet. creating condition. The structure and properties of the flow stock are decisive for sheet formation and paper quality.

The development status and future development trend of papermaking machinery in recent years have shown rapid growth, which has caused overcapacity to a certain extent, and the industry has encountered greater difficulties. Facts show that the extensive development mode has come to an end, and realizing the strategic transformation of the paper industry is an inevitable requirement for the industry to develop to the current stage. Therefore, adjusting the structure of the paper industry and realizing industry revitalization in the process of adjustment will be a necessary factor for the survival of enterprises in the harsh environment of the financial crisis.

The dryness of the wet paper out of the press section is generally only 30%~40%. In the new paper machine with compound press, the dryness is only 40%~50%. Therefore, it is necessary to use the drying cylinder to evaporate the water to make the paper dry. increased to 92%~95%.

The papermaking industry is determined by its process that the equipment clusters and monomers are relatively large, and the degree of continuity and automation is high. Therefore, once the damage is often huge, many enterprises try to avoid the losses caused by major problems and uncontrollable pro