It is designed to ensure accuracy, hygiene, and efficiency in the critical transition of raw milk from the transport vehicle to the factory's main processing line.
Key Functions of a Milk Reception Unit:
* Unloading/Intake: Receiving the raw milk from delivery vehicles (tankers or cans).
* Grading and Testing: Taking samples and performing rapid quality checks for:
* Temperature
* Fat content
* Solids-Not-Fat (SNF)
* Density (to check for possible water adulteration)
* Acidity
* Adulterants/Antibiotics (more advanced tests).
* Filtration/Sieving: Passing the milk through filters or sieves to remove physical impurities or debris.
* Air Elimination (Deaeration): Removing entrained air and foam from the milk. This is essential for accurate volume measurement and to improve pump efficiency.
* Measurement/Weighing: Accurately measuring the quantity of milk received, often done with a Weigh Bowl/Tank (for can reception) or a High-Accuracy Flow Meter with an air eliminator (for tanker reception). This data is critical for payment to farmers/suppliers.
* Pumping: Using sanitary pumps to move the milk from the reception area to the cooling or storage tanks.
* Cooling (Chilling): Rapidly chilling the raw milk, typically using a Plate Heat Exchanger, to a low temperature (usually \leq 4^\circ \text{C}) to prevent bacterial growth and preserve its quality until processing.
* Storage: Transferring the chilled raw milk into insulated Raw Milk Silos/Storage Tanks before pasteurization.
Essential Components of an MRU:
The modern, often skid-mounted, MRU system typically includes:
* Reception Bay/Dock: The area where tankers or cans are received and connected.
* Deaerator/Air Eliminator: A device to remove air bubbles from the milk flow.
* Flow Meter (or Weigh Tank): For accurate quantitative measurement.
* Filter/Strainers: To remove physical foreign matter.
* Milk Transfer Pump: To move the milk through the system.
* Plate Heat Exchanger (Chiller): For immediate chilling.
* Sampling Station: For collecting milk samples for quality testing.
* Control Panel (PLC): To automate and monitor the entire reception process.
* CIP (Clean-in-Place) Connections: The system is designed to be easily cleaned and sanitized automatically.