（ calender roll ）PURIFYING SCREENING SYSTEM
WORKING PRINCIPLE
The coarse screening system is the most important impurity in the whole pulping system Discharge point,especially for light impurities.The final pulp clean degree,and fiber loss rate,will be affected by the advantages and disadvantages of the coarsescreening system to the greatest extent.（ calender roll ）
When the volume of light impurities is relatively large,it is easier to discharge out of the system,reduce the loss of fiber,and reduce the impurity fragmentation,which is of great help to the subsequent processes.
SCS COARSE SCREEN（PURIFICATION FILTER EQUIPMENT）
Application
Used for various waste paper pulp of coarse screening.
Construction features
Based on the fluid dynamic development of new high efficiency and energy saving up circulation the son,and high performance big let flow processing capacity sieve drum, Save 30~60% of the power consumption, improve the efficiency of screening.
Special design of the high flow structure,higher production ability; Liters flow design and prolong the service life of the consumables.
Main technical data
HIGH(M)CONCENTRATION SLAG ELIMINATOR
Application
High/medium concentration slagger can be continuously operated to remove all kinds of heavy impurities in waste pulp.The equipment is generally installed after the hydraulic pulper as a coarse screening and purification equipment.At the same time as a protective important equipment to ensure the follow-up process equipment normal Operation.The country.Transmission is divided into two forms:belt transmission and reducer transmission.
Construction features
The slurry pipe with certain inclination Angle and tangent direction can effectively form strong eddy current,and the separation effect of heavy impurities is obvious.The cone is made of alumina wear-resistant ceramic with long service life.Double cone structure,less fiber loss,high separation efficiency of heavy impurities.Adopt PLC automatic control system,save manpower and material resources effectively.Transmission is divided into two forms:belt transmission and
reducer transmission.
Main technical data
SEDIMENT WASHER
Application
Used for separating heavy impurities such as setsuko,sand,iron slag and glass from waste slag in pulp and paper industry.
Construction features
Shaftless spiral structure,anti-winding,can keep the gap after wear.
Unilateral fixation,easy to install and disassemble,and avoid bottom failure and maintenance.
Main technical data
OUTFLOW PRESSURE SCREEN
Application
Used for different screening process of various sizes to achieve fine screening.
Construction features
The equipment has wide adaptability,large production capacity,high slurry flow speed and high production efficiency.It is especially suitable for fine screening of waste pulp.
The screen frame is of high strength bar type,with large slurry throughput and long service life. The rotor adopts multi blade rotor or barrel rotor,with high pulse frequency,which is conducive to the cleaning of screen gap.
Prolong the action time of negative pressure pulse to ensure the continuous operation of the screening process.
The specially designed pressure screen rotor can effectively avoid the thickening phenomenon in the screening process.
Main technical data
BNDX SINGLEEFFECT FIBER SEPARATOR
Application
It can remove all kinds of impurities in waste paper raw materials by using fiber specific gravity difference,and has the combined functions of dispersing,separating and coarse screening.The general device is used as the secondary pulp crushing and separation equipment after the hydraulic pulper,and can also be used as the tailing slag treatment equipment.
Construction features
It has three basic functions:secondary dredging of slurry,separation of light impurities,removal of heavy and crude wastes.Low grade waste paper can be used to reduce the pretreatment of raw materials.Improving the production capacity of the existing hydraulic pulper can save 40~60%of the unit energy consumption.Obtain high quality slurry,small fiber loss,improve screening efficiency,the yield is 2-2.5 times of the traditional single effect.
Main technical data
FLOAT PUREGER
Application
Used to treat light impurities and tail pulp in rough screening section in waste paper pulping production.
Construction features
The equipment is mainly composed of shell,discharge tray,sieve plate,rotor device,transmission device,etc.The inverted cone and concave convex top structure of the shell is conducive to the formation of strong eddy currents, the effective discharge of light impurities and the settlement of heavy impurities.
The way of ascending flow and entering slurry is adopted.With the high-speed rotation of the rotor,a strong eddy current is generated in the shell.
The light impurities are gathered in the center of the eddy current and discharged from the center of the shell;The fiber bundle and the slurry are further loosened between the rotor and the sieve plate,and the good slurry is discharged from the good slurry mouth through the sieve plate;
Heavy impurities are settled in the sediment ditch outside the sieve plate and discharged regularly through the sediment tank.
Main technical data
COARSE SLAG SCREEN
Application
It is used for the end screen (type B)of the coarse screen section in the paper making process.
（calender rolls）Used for separation of light and heavy impurities and fiber recovery in the process of paper making waste residue(Type C).
Fiber recovery for paper pulp(type C).
Construction features
The coarse screen tail slurry enters the lower shell through the slurry inlet pipe and is dispersed by the rotating disc impeller.The good slurry is discharged through the sieve plate and the heavy waste slag is discharged from the heavy slag inlet by the centrifugal action of the impeller.The tail slurry that is not fully separated is transported by the vertical rotor to the upper part of the shell,and the upper part of the shell is designed with a sieve drum with a dredging knife.
The slurry is further dredged,and the good slurry is discharged from the coarse slurry mouth through the sieve hole of the sieve drum,and the light material that is clean and washed is discharged from the light slag mouth of the upper part of the vertical rotor.
Main technical data
IMPURITY SEPARATOR
Application
Used in pulp and paper industry for shredding damaged paper in press.
Construction features
Two kinds of structure to choose from;
Clean the impurities to reduce the fiber out of the system;
Recycled water,high concentration of slag discharge;
Closed structure,improve the site environment.
Main technical data
UP FLOW CLASSIFIER
Application
Used for fiber grading and sizing of recycled pulp of waste paper.
Construction features
（calender rolls）The equipment adopts the upflow structure of feeding slurry at the bottom, discharging heavy slag at the bottom and discharging light slag at the top,which effectively solves the problem of impurity removal.The air in the long fiber and slurry naturally rises to the top of the long fiber pipe and is discharged,and heavy impurities are discharged through the bottom as soon as they enter the body.The retention time of impurities in the screening area is effectively shortened,the possibility of impurity circulation is reduced,and the screening efficiency is improved;It prevents heavy impurities from wearing the rotor and screen drum,and prolongs the service life of the equipment.
Main technical data
UPFLOW FINE SCREEN
Application
Used for fine screening of waste paper pulp.
Construction features
（calender rolls）The equipment adopts the up flow structure of feeding slurry at the bottom, discharging heavy slag at the bottom and discharging light slag at the top, which effectively solves the problem of impurity removal.The light impurities and the air in the slurry naturally rise to the top slag discharge port for discharge,and the heavy impurities are discharged through the bottom as soon as they enter the machine body.The retention time of impurities in the screening area is effectively shortened,the possibility of impurity circulation is reduced,and the screening efficiency is improved;It prevents heavy impurities from wearing the rotor and screen drum,and prolongs the service life of the equipment.
Main technical data
BN-ZS TYPE TAILINGS SCREEN
Main technical data
BN INFLOW PRESSURE SCREEN
Application
Paper pulp production system A fine screening equipment for pulp.
Construction features
（calender rolls）This series internal flow pressure screen is used for screen before paper machine.The equipment can make the paper machine run smoothly and reduce the breakage.Change the internal structure design to optimize pulp energy saving and consumption reduction.
Low energy consumption,large amount of pass,small amount of tailings,screening efficiency is very high.
Impurities on the outside of the screen frame,by the centrifugal force of the rotor movement away from the screen frame,the screen frame surface wear less,prolong the service life.
Smooth slurry flow,low pulse intensity,impurity and fiber bundle separation effect is good,screen seam is not easy to plug.
Main technical data
