AUTOMATION OF CONCRETE MIXING UNITS

Contact:
Research laboratory of industrial automation,
phones: (+375 17) 2314620, 2966720
fax: (+375 17) 2966831
e-mail:
www.nilap.com

Belarusian National Technical University
Address: 65, Nezalejnastsi ave., 220013, Minsk,
Republic of Belarus

Purpose and area of application

   Modernization is an installation of weigh measuring strain-gauge systems on each type of batchers, which are included in a unit, and joining all of the batchers in a local network with the help of the multipurpose controller of operator. Thus controllers KTU-2 carry out not only weighing, but also batching control. And the controller of operator allows to define a formula of concrete mixes and give out to each controller KTU-2 the task for dispatching of each component.

Description

The structure of strain-gauge batchers of the concrete-mixing units includes the following devices:

  • batcher of macadam or sand (from 1 up to 3 pieces), each is applied for 2 components of batching;
  • cement batcher (2 components);
  • batcher of water and chemical additives;
  • batcher of precise chemical additives (limit of batching up to 20 kg).
  • If it is necessary to set a batcher of pigment.

    If it is necessary PC can be used instead of an operator's console.

     


Batcher of chemical additives


Batcher of sand (macadam)

Technical characteristics

Parameter Type of balance applied for batching

Sand (macadam)

Cement

Water and chemical additives

Precise chemical additives

Maximal limit of batching, kg 400 / 1000 (1000 / 2000) 300 / 500 6 / 10
Minimal limit of batching, kg 100 (250) 50 0,15
Discontinuity of reading (d) and scale verifying factor (e), kg 0,2 / 0,5 (0,5 / 1) 0,1 / 0,2 0,002 / 0,005
Error of batching ±1


Structure scheme


Scheme of computer regulation

 
 
For additional information please contact us at:
phone: (+ 375 17) 2328342
fax: (+375 17) 2327183
e-mail:
Ministry of Education for the Republic of Belarus