MDK 50-12R
MDK 50-12R

System is designed for dosing of 12 loose components into the one portion, and applied for accurate dosing of loose components for PMVS and concentrated feedstuff preparation.


Micro-ingredients dosing system is designed for application at agricultural farms and other agricultural enterprises for preparation of feed mixtures from different types of grains, raw materials of animal and vegetable origin for feeding of cattle, horses, pigs, poultry, fish and other animals.

Micro-ingredients dosing system MDK 50-12R

Parameters

Quantity of hoppers, pcs.

12

Hopper volume, l

300

Measurement accuracy of strain gauges (OIML)

С3MR

Sensor minimal verification interval, g

5

Total error, %

≤±0,02

Lowest limit of weighing, g

100 *

Total weighing limit for three sections (for product density 1 t/m3) max., kg

100

Total weighing limit for three sections (for product density 1 t/m3) max., kg

33,3

Number of cycles per hour (determined by production technology)

max. 10

Rated power of one dosing screw, kW

0,55

Rated power of discharge conveyor, kW

0,75

Max. power consumption, kW

2,4

- High operating speed due to possibility of simultaneous dosing of 3 different components into 3 weighing trays.


- High dosing accuracy provided by strain gauges HBM with measurement accuracy С3MR, which signal is processed by 24-bit sigma-delta ADC Analog Devices.


- Feeders capacity is selected taking into account dosing range of each component. For these purposes we apply gears Motovario or STROINA with different gear ratios (20,25,30), dosing screws with different diameters are also may be applied.


- Feeders operate in 2-speed mode for coarse and fine dosing. The weight of fine dosing is set individually for each component depending on its characteristics. In addition, it is possible to adjust dosing speed (by frequency controllers) separately for feeders with outlet to one tray.


- Feeders are equipped with isolating valves (pneumatic: Festo or Camozzi), which prevent spontaneous pouring of adjacent component, and high trays walls allow to avoid overfilling.

 

- Pneumatic vibrators installed on hoppers are switched on automatically only in case of product sticking (product hang-up) and only for the hopper where it is occurred.


- Rectangular shape of hoppers allows more efficient use of space, and beveled shape of corners reduces possibility of product sticking.


- Parts in contact with the product are made of stainless steel that allows to apply machines in food industry.


Device for unloading of sacks ПР-250 (PR-250), which serves for loading of each hopper, is placed on the platform on top of the MDK system and easily moves from one hopper to another. Internal local filter prevents dusting in production facilities and loss of premixes micro-ingredients. Filter cleaning, both in manual (by shaker handle) and automatic mode, ensures removal of expensive components from loading chamber and maximal filling of supply bins.


The main difference from analogues is an autonomous control system, which ensures high accuracy of micro-ingredients dosing in automatic mode.


It is based on ТД-02М strain gauge controllers and self-engineered block control relay, which work without failure for more than 8 years. That is almost 4 times cheaper than solutions based on the products of world famous brands. At the same time, ТД-02M is equipped with element base of world leading manufacturers.


Strain gauge controller ТД-02М in conjunction with relay block БР-01М (communication device with actuators), receiving control instructions and recipes parameters from upper-level control system, solves all other tasks on dosing at the lower level. Switches on dosing screws, controls components unloading, prepares reports data for transmission to the upper-level control system.


Various systems with open communication protocol Modbus support may act as upper-level control system for strain gouge controller. We apply the following upper-level control systems:

- based on programmable logic controller (ICP DAS)

- computer with installed program complex SCADA

- special device WEB HMI.


Autonomy – control system remains operable without upper-level ACS. Manual control mode of strain gauge controller allows manually switch on the process of components dosing and unloading. All other operations are occurred by strain gauge controller. Such implementation of dosing control system allows to scale technological processes without heavy load on upper-level control system. It is possible to apply several dosing systems in one technological process (also with different characteristics), that allows to achieve the required accuracy and high performance of the entire technological line. Easy setup and access to all operating parameters of strain gauge controller directly from the front panel allow to provide zeroing of scales, calibration, verification, recipes control, adjustment of communication parameters with external devices.