How to maintain and upkeep an open headbox

How to maintain and upkeep an open headbox
The maintenance and upkeep of an open flow box is crucial to ensuring its normal operation and extending its service life. Here are some specific maintenance and upkeep measures:
1、 Regular inspections
Overall inspection: After each use, a comprehensive inspection of the box, inlet and outlet, mixing device, grouting system, and other parts is required to ensure that there are no blockages, wear, or leaks.
Detail inspection: Pay special attention to checking the reliability of each sealing cushion to prevent it from flushing out of the groove and affecting the sealing effect. At the same time, check if there are large hard objects blocking each tube bundle and clean them in a timely manner.
2、 Cleaning and maintenance
Cleaning program:
When using cleaning tools to clean the lips, first lift the upper lip plate to its repair position, open the baffles on both sides of the flow box, place the cleaning tool into the lips, and move the cleaning tool back and forth along the banner.
Regularly clean the surface of the headbox, the baffle, and the front edge of the upper lip, as well as the pressure balance chamber, tube bundle, turbulence generator, and other parts.
For particularly stubborn dirt, chemical cleaning agents can be used for cleaning, but attention should be paid to wearing protective clothing and personal protective equipment.
Cleaning precautions:
During the cleaning process, hard objects should be avoided from touching the upper lip to avoid damage.
When cleaning, ensure that the cleaning device of the headbox is inside the headbox to avoid personal injury.
3、 Maintenance and upkeep
Replace vulnerable parts: Regularly inspect and replace mixing devices, sealing soft pads, and other vulnerable parts to prevent wear and tear from affecting equipment performance.
Lubrication and adjustment: Regularly lubricate the transmission components of the flow box to ensure smooth operation. At the same time, adjust the parameters such as the opening of the lip plate and the slurry to mesh speed ratio as needed to achieve the best operating effect.
Long term standby treatment: If the headbox is in a long-term standby state during use, comprehensive maintenance and upkeep should be carried out on the equipment to ensure that it is in good condition during storage. Especially pay attention to measures such as moisture-proof, dust-proof, and rust prevention.
4、 Safe operation
Operating procedures: When operating the headbox, it is necessary to strictly follow the operating procedures and safety regulations to prevent equipment damage or personal injury caused by improper operation.
Protective measures: When handling or touching sharp and invisible edges of the headbox, operators must have corresponding personal protective devices to prevent scratches.
5、 Precautions
Water quality requirements: Pay attention to the water quality of the clean water used, and avoid using excessively hard water that may cause severe internal scaling. If necessary, the internal sprinkler water system can be modified to replace clean water with condensate water.
Shutdown handling: Before shutdown, ensure that the vacuum suction roller has been lifted to the highest position, and the spray water pipe for washing wet paper must be open. After shutdown, the short circulation system should be flushed with water to maintain the cleanliness of the slurry box, and the slurry pipeline behind the white water tank outside the machine should be flushed to prevent blockage of the pressure screen.
In summary, the maintenance and upkeep of an open flow box need to start from multiple aspects, including regular inspections, cleaning and upkeep, maintenance and upkeep, safe operation, and precautions. By implementing scientific and reasonable maintenance measures, the normal operation and extended service life of the headbox can be ensured.