Dryer Machine

Drying:

Drying is defined as a process where the liquid portion of the solution is evaporated from the             fabric. In Relax dryer machine in BKL containing 2 Gas burner, 2 Chamber, 8 Blower and 2                      Conveyer net.

Dryer Machine :

          Dryer machine is used for removing the residual water contained in the fabric after squeezing by applying heat on the fabric. In this machine the fabric is fed on the drying net at low over feed speed and the humidity is continuously measured. Drying is done by applying heat through burner nozzles. During drying the total heat passed through the machine is extracted by the exhaust fan

Functions:

•To dry the fabric with the help of blower and burner.

•To control the shrinkage of the fabric.

•To prepare the fabric for next subsequent process.

•To dry fabric without tension.

•To remove residual water containing in the fabric.

Main Parts of the Machine:

1.Drying Net.

2.Heating Chamber:

3.Blower.

4.Burner.

5.Free Roller.

6.Centering Roller.

7.Scroll Roller.

8.Folder.

9.Rubber Belt for fabric delivery.

10.Exhaust fan.

Controlling points of dryer:

          1.Overfeed .

2.Temperature .

3.Padder pressure .

4.Speed  .

Checking parameters:

1.Overfeed ( %) : It depends on fabric structure & GSM

2.Temperature: It depends on color & GSM.( normally for single jersey 140C, for high

   GSM, like-fleece, it may be 160 to 170C )

3.Speed: It depends on fabric GSM. For higher GSM, lower the speed.

4.Temperature:-Set the temperature between 1300c -1400c for white and 1500c -1700c

  for color fabric. If GSM increase than the temperature is increase Or, if moisture

  content increase than  temperature is also increase.

5.Set the over feed up to 25~50% or as required to get finish G.S.M.

6.  Set the speed as much as possible (6~20m/min).  GSM       speed  .

7. Machine dia will 40% Plus from the fabric dia.    

N.B:

 *  If fabric is more Redder than the standard one, then reduce the temperature.

*    If fabric is more Yellower than the standard one, then increase the temperature.

*  If fabric is more Bluer than the standard one, then increase the temperature.

Hot Air Circulation System:

        In Stenter and Dryer machines air is recirculated which passes from the exhaust sluts and air controller flaps. Then the air is passed over the nozzles through which fabric is passed and routes it over to the heat exchanger which lets the air to be heated by the burner. The circulating air fan allows the hot air to pass uniformly through the nozzles to the fabric where the air controller flaps control the upper and lower nozzle air and thus the fabric is heated. Finally the used hot air is passed on to the exhaust air duct. 

Find out the limitations and faults of the machine and advise for removing these. 

•   Selvedge drying system is not properly functioning.

•

•   Maximum over feed of the machine is +60%.

•

•   When the steam temperature is 1000C-1200C, then delivered fabric temperature is 45-500C. But there is no cooling zone in this machine to reduce the excess temperature. So a cooling zone in delivery zone can be attached.

  

Diagram of Textile Dryer :

Santex Dryer

Dryer- (multifunctional)

Band name:-  Santex

Origin: –  China

 M/C  Type-  Santashrink progress.

Year of construction-  2008

Chamber:  -4

Com.no:  6960/2600(mm)

Elect-Voltage: 3×400/50(Volt/Hz)

Connected Load:  193/435(KW/A)