Working Mechanism Of Hydro-Extractor


In the yarn dyeing process; the hydro extractor section plays an important role after passing the dyeing section. The hydro extractor which is used for yarn is different from the hydro extractor which is used for fabric.

Hydro-extractor is essential to remove excess water from the package. About 60-70% of water removes by a hydro-extractor. After passing the dyeing section package enter into the Hydro-extractor section.

Hydro Extractor Machine Description

It needs to know about a machine before using it. So before selecting a machine, one should get the information which is given below. I have presented a machine profile with some data which is essential to know.

Brand Name: DETTINS.P.A

Country Origin: ITALY

Model: BERTA 24 T.E

Rotation: 1500 rpm (Maximum)

No. of Arm: 04

No. of Spindle: 64

Power: 15, 8 kW

Alimentation: 400 Volts, 50 HZ

Working Mechanism of Hydro-Extractor

Every manufacturer supplies a prospectus in which they supply all information about the machine as well as its working procedure. In fact, I have described the working mechanism of a hydro extractor from my working experience. Dyed yarn package placed on spindle then entered into the basket. After that, the basket consists of a central spindle on which the head of the arm is placed. The wall of the basket is also perforated. However, the basket rotates at a high rate of speed up to 1500 rpm. Therefore, the excess water is removed by centrifugal force. Besides, up to 70% of water is removed by this machine. Then yarn package was transferred into the dryer.

Efficiency Evaluation of of Hydro-Extractor

It needs to evaluate the efficiency of a hydro extractor because it determines the working power of a hydro extractor. For this reason, I like to give an evaluation process of the efficiency of a hydro extractor.


  • Weight of double yarn package before dyeing = 1.2 Kg
  • The weight of double yarn package with water before Hydro= 3.49 Kg
  • Weight of water in double yarn package before Hydro= (3.49 – 1.2) Kg =  2.29 Kg
  • Weight of package after Hydro=  2.034 Kg
  • Water remain in package after Hydro= (2.034 – 1.2) Kg  =  0.834 Kg
  • Water remove by Hydro-Extractor= (2.29 – 0.834) Kg = 1.456 kg

Efficiency  = {(Weight of water before Hydro – Water remain after Hydro) – Weight of water before Hydro} X 100%

= {(2.29 – 0.834) – 2.29} X 100%

= 0.63 X 100%

= 63%

Efficiency of Hydro-Extractor = 63%

In sum, after passing the hydro-extractor section yarn packages are sent to the dryer section for removing the remaining water.

So, using a hydro extractor should be perfect. Also, we have to care full about the fault which could occur during this process.

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    • Vivin Tex, Tamilnadu, India.

      Dear sir,
      We are running 5.5count OE yarn Package 1400 gram moisture removing 40% basket speed 1200 rpm Running time 360 sec. How to improve efficiency.
      Machine detail given blow:
      Model : T/E BERTA 36

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