Do you know how to install Double Disc Refiner?

Refining  is  an  indispensable  step  in the   paper making   process.   Through   the mechanical  action  of refining,  the  long fibers  are  cut  to  achieve  the  length required  for  paper making,  and  the  fiber length is uniform. From refining, the plant fibers are broomed and  swollen, and  the specific  surface  area  of  the  fibers  is increased,  which  is  beneficial  to  the forming  of  paper  sheets  during  sheet making.  It can be said that the pulp refining is very important,  and  as  the main equipment of refining, the double disc refiner plays  an  important  role.  Here is   the  introduction and installation for double disc refiner.

1.Composition of Double Disc Refiner 

The double disc refiner consists of refining chamber, transmission mechanism, base support, and an electric motor, etc.

Stator, fixed  on  the  housing,  refiner plate  can  be  replaced;  

Rotor, is connected with the main transmission  shaft, and the replaceable refiner plate is  fixed on it. The refiner plates is the main component for slurry beating.

2.Installation of Double Disc Refiner

1)After the equipment arrived, firstly  check  the  appearance  of the refiner to see if there is any  damage,  deformation,  etc., 

And     check     whether     the accessories   are   complete   and intact item by item according to the packing  list.  If there are any    problems,    contact    the manufacturer in time.

2)Check   whether   the   size, flatness and reserved hole size of   the   refiner   installation foundation  are  consistent with the  drawings,  and  clean  the installation  site  to  prepare for installation.

3)Use a driving or other hoisting equipment to lift the base of the refiner to the installation;
Measure the position, then level and align, determine the position of the anchor bolts, and calibrate it.

After    secondary    grouting,    the    longitudinal horizontal deviation of the upper plane of the base is  required  to  be  ≤  0.  10  mm/m,  The  lateral horizontal  deviation  is  ≤  0.  20 mm/m. During  the regimen period, the regimen should be maintained as required.

4)Install the refiner and motor, use the main shaft to further adjust the longitudinal horizontal deviation, and use the flange surface of the pulp outlet to adjust the lateral deviation. The coaxiality between the two couplings is controlled at 0.20mm, and the gap between the two couplings should be consistent, without offset or tilt, etc., to avoid large vibration during equipment operation.

5)After installation, check and confirm that everything is correct, clean up the site, and prepare for the test running.

Test running steps: 

1)Check whether all lubricating parts are in good condition;
2)Check whether all fasteners are loose, especially the bolts that fix the refiner rotor and stator;
3)Connect the power supply according to the instructions;

4)Remove the cutter disc, and then start the motor.
5)After the machine runs normally, start feeding the pulp, and then slowly pressurize the cutter to refine the pulp;

6)Pay attention to the change of current during refining. For example: The pressure current of the ZDP450 type pulping machine: Y315M-6, 90kW motor shall not be greater than 160A. 
After the test running is completed, it is delivered to be used smoothly.