Ceramic Dewatering Elements

Quality Assurance
For guaranteeing product quality and on-time delivery, Beichen built new manufacturing factory in 2016 with floor area 13900㎡ in High-tech Zone. Key parts of the factory are two workshops and one warehouse together with a office building.

Advanced Production Equipment
With advanced production equipment, skilled technicians and scientific management, the overall production capacity realized times increase. For the ceramic cones production line, we own isostatic pressing machine, CNC grinders, electric kiln and gas kiln and skilled grinding technology. We realize the full process production all by own both for ceramic cones and stainless steel cones ceramic lining and grinding.

Strict Inspection
Before being shipped, each product must go through a comprehensive inspection. Every pulp cleaner, spare part, and ceramic dewatering component is rigorously evaluated to ensure that it meets the size, composition, and technical specifications outlined in the drawings.

Comprehensive Service
The services team form Beichen cover pre-planning, selling, technique assistance, package and deliver. We can help to provide better product solution and maintain for longer operation lifecycle of your processes and equipment. Further benefits can be provided by our service in energy saving, enhanced production efficiency.

The order of ceramic dewatering elements is in paper run direction on the lower part of the wire as follows: forming board, dewatering foils, hydrofoils boxes, depression foil boxes and suction boxes.

The correct placement of the ceramic dewatering elements is essential for a quality dewatering to reach required percentage of the dryness after the wire part and required fibers formation. A steam box is used to increase a temperature of the paper before it enter the press part to get more of the dryness during pressing. The wire part length depends on the PM performance and on types of paper produced there. The wire length is also determined by the number of dewatering elements.

The PM endless wire is carried, guided and stretched by a row of rolls in the lower part of the wire table. The wire guide is located there and it guides the wire so that the wire would not leave the machine axis. Manual and automatic wire stretchers are used as well and they stretch the wire for a required value (2.5 – 8.0 N/mm). In case of a reverse run, the wire is cleaned by water showers. These remove mainly the fiber that got stuck during the stock dewatering and were not separated together with the paper web running into the press part.

The paper width is secured by format showers which separate the paper web edges. These edges appearing during dewatering are rough and their passage through the PM might prevent a non-problematic production due to the appearance of breaks.

We offer a cantilever construction version of the wire part which facilitates an easy and quick wire replacing. The structure is anti- corrosive and with an adequate height to allow an easy and accessible maintenance. All other complementing features such as wire run pneumatic guide, low-pressure and high-pressure shower systems, doctors, edge threading and breakage nozzles, are seen as standard for all wire parts supplied.

Cleaning blades
Cleaning of the ceramic dewatering elements of the suction box can be done with high-pressure equipment. Cleaning should be done as soon as possible after the wire/felt is removed. The maximum pressure is 100 bar (1450 psi), maximum water velocity 30 l/min (8 gpm) and maximum temperature is 60 ºC (140 ºF). Cleaning with higher pressure or temperature or larger volume of water or with jet nozzles can cause damage to the fiber reinforced plastic material and the ceramic.

Normal maintenance
Visually check the ceramic, looking specifically at the surface and edges for breaks, cracks, loose segments and the bond line. Verify that the suction box is still firmly bolted to the frame. Make sure all dewatering elements, piping and screw connections are correctly connected to the suction box. Verify that the suction box is operating without undue vibration. Check to make sure all vacuum levels are at the desired levels. Verify that drainage is even and trouble free over the entire machine width.

Changing foils
If any foils are swapped out during a shutdown, the existing foils should be removed as soon as possible after the machine stops. This will prevent the foils sticking in place due to drying deposits.

Adjustment
Height of the suction box, i.e. penetration into the wire/felt by the suction box blades, can typically be adjusted with mounting bolts on the sides or underneath the suction box where it mounts to the framework.