Products "DONIDO"

The module is designed for automated dosing of liquid and viscose additives (such as jam, vegetable fat etc.) which can be done before or after the heat processing of the product. When the additives are sterile they can be fed in doses or in line, just before packaging. DONI®Liquid Plus is integrated in the production lines of drinking fruit milk and yogurt. The module contains two cone hoppers which allow the continuous cycle of operation with two different additives. When operated with sterile jam the hoppers should be aseptic. A system of valves, flow meter and micro-processing control ensures precise dosing in line or in defined volumes. The Module requires CIP washing. It is suitable for medium and large sized dairy factories.

DONI®Dry Plus 10 is designed for the dosed dissolving of dry additives in milk or for restoring powder milk in the production of yogurt and other dairy products. The dry additives are placed in the hopper of DONI®Dry Plus 10. There is a screw conveyor installed on the base which feeds the dry ingredients evenly towards a 50 l silo with an integrated injector at the bottom (Venturi tube). The liquid (water or milk) where the additives are dissolved is pumped through the injector. The high speed of the flow and the pressure difference at the inlet and the outlet creates a vacuum which sucks the dry ingredients in evenly. The prepared mixture is then fed with or without de-aeration into DONI®Tank for storage and processing.
The maximum saturation of the mixture is 30% dry matter in the whole of the entire mixture. If the process requires a higher content of dry matter the ready mixture is re-circulated. For more effective dissolving of the dry additives DONIDO® recommends the liquid where the additives are added to be heated to 50°С at the inlet of DONI®Dry Plus 10. It should then be cooled for storage at 4°- 6°С at the outlet. For best results DONIDO® installs a vacuum de- aerator after the module for foam removing.
DONI®Dry Plus 10 connects to DONI®Tank, where the prepared mixture is stored. Three tanks are necessary to be able to provide continuous operation.
DONI®Dry Plus 10 will be suitable for CIP cleaning if a second return pump is included. It is suitable for medium and large sized dairy factories.

DONI®Dry Plus 5.7 is designed for dissolving dry milk and dry additives. They are fed manually through the man-hole of the 50 l cone silo which has an installed injector /Venturi tube/ at the bottom. The liquid (water or milk) where the additives are dissolved, is pumped through the injector. The high speed of the flow and the pressure difference at the inlet and the outlet creates a vacuum which sucks the dry ingredients in evenly. The ready mixture is then fed with or without de-aeration into DONI®Tank for storage and processing.
The maximum saturation of the mixture is 30% dry matter in the whole of the entire mixture. If the process requires a higher content of dry matter the ready mixture is re-circulated. For more effective dissolving of the dry additives DONIDO® recommends that the fluid where the additives are fed should be heated to 50°С at the inlet of DONI®Dry Plus 5.7. It should then be cooled for storage at 4° - 6°С at the outlet. To achieve best results DONIDO® installs a vacuum de-aerator after the module for removing foam.
DONI®Dry Plus 5.7 will be suitable for CIP cleaning if a second return pump is included.
It is suitable for small and medium sized dairy factories.

It is designed for the standardization of milk by its fat content or the ratio fat/solids – nonfat (MSNF). 
It is designed for CIP cleaning.

DONI®Deair is an integrated module for vacuum de-aeration and it operates together with DONI®Therm. The milk which has been heated to 68°С flows tangentially in a tank under vacuum of 0,7 atm.These conditions cause intensive evaporation where finely dispersed air separates (evaporates) from the product. The vapour condenses in the condenser and returns. The air separation improves the operation of DONI®Therm and prevents the build up of carbon deposit in the high temperature section. It also prolongs the period between two cleaning cycles.
When DONI®Deair operates without a condenser then a significant part of the product's water content evaporates. This part can reach 2%. If that occurs the module effectively removes the undesired milk odour and improves the quality of the final product.
The module is designed for CIP cleaning.

DONI®Process is a vertical cylindrical tank with insulation and welded sheath, closed with two cone shaped bases. On the upper base there are: a manhole, an aseptic module and a gear motor of the stirring mechanism. The specifically designed stirring mechanism ensures best results and protection of the coagulum. If during fermentation or later the temperature cycle needs corrections, the module is supplied with heating-cooling elements and an autonomous system for slow heating. A valve for taking samples is installed in DONI®Process. The valve can be sterilised. The DONI®Process frame requires CIP cleaning. The standard order of volumes manufactured by DONIDO® are:

For the manufacturing of yogurt with hard coagulum DONI®Process is supplied with a propeller stirring mechanism. The standard order is recommended when choosing equipment, however, it does not limit your options. Different options can be negotiated.

DONI®Therm TCH is a tubular heat exchanger "pipe-in-pipe" type. It is designed to cool the curd-whey mixture in the manufacturing of soft non-maturing cheese and coagulated yogurt products. The heat exchanger is also used to heat and cool other liquid ingredients like washing water, cleaning solutions etc. The module comes as a set with an adjustable frame, indication sensors and a control panel.

The maximum temperature difference between the cooling and heating processes is 30°С.

It is designed for CIP cleaning.

DONI®Therm UHT is an automated module for ultra high temperature treatment of milk. It comes with a tube heat exchangers, a homogenizer and a de-aerator. It is designed for the sterilization and cooling of milk to the desired manufacturing/processing temperatures. DONI®Therm UHT has four operating programs:
- unit sterilization cycle;
- milk starting cycle;
- sterilization;
- final CIP cleaning or local cleaning;
DONI®Therm UHT operates in the following cycle:
- inlet 5°С;
- homogenization 75°С;
- sterilization 138 to 140°С with 4s hold;
- outlet 20 to 25°С;
DONI®Therm UHT includes safety systems that guarantee the pasteurization cycle and the outlet temperature.

DONI®Therm CH is a plate heat exchanger designed for manufactiring processes where a change in temperature of the processed product is involved:
- Milk cooling for storage
- Cooling of yogurt products
- Heating of liquids when necessary etc.
The module is supplied with a temperature control system and a system for slow heating, if required. It is designed for CIP cleaning.

DONI®Therm is an automated module for heat treatment and it comes together with a plate heat exchanger. It is designed for the pasteurization and cooling of milk to the desired processing temperatures. DONI®Therm has five operating programs:
- unit sterilization regime
- standby regime
- pasteurization
- intermediate CIP cleaning
- pasteurization
- final CIP cleaning
When used correctly and with good quality milk DONI®Therm can work continuously for 10 hours to the intermediate CIP cleaning cycle and then 4 more hours following this. DONI®Therm covers all temperature cycles for the heat treatment of milk:
- thermization at 65°С and cooling at 4°С for storage;
- pasteurization at 72° to 76° C and cooling to 32° to 34° C for production of cheese
- pasteurization at 95° to 96° C and cooling to 22° to 45° C for production of yoghurt
- pasteurization at 85° to 95° C and cooling to 4° C for drinking milk
- outlet for separation and clarification at 45° to 65° C
- outlet for homogenization at 65° C
- outlet for de-aeration at 68° C
DONI®Therm is designed with a high regeneration level that can reach up to 94 % in some temperature cycles. DONI®Therm is designed with safety systems that guarantee the pasteurization cycle and the outlet temperature.

DONI®Aseptank is designed for the storage of sterilized products and it is a buffer module between DONI®Therm UHT and the packaging machines. DONI®Aseptank should be used when:
- there is a difference in the production output of DONI®Therm UHT and the packaging machines;
- Any of the packaging machines suddenly stop.
- there are products which cannot re-circulated;
Before use DONI®Aseptank should be sterilized with steam and cooled with water. Pressure is maintained with sterile air in the void.
It is designed for CIP cleaning.

DONI®Tank L are buffer tanks for temporary holding of raw or pasteurised milk and other liquid ingredients. They are also used for certain manufacturing processes. They are installed indoors and in a vertical position. The tanks have different components depending on the manufacturing process.
- with insulation or without insulation;
- with or without a stirring mechanism;
- with a manhole on the top or on the side;
- with sensors for low, high and current levels;
- spray balls for CIP cleaning.
The manufacturing lines are designed according to the manufacturing process and the specific working environment.

DONI®Tank is designed for the storage of raw or pasteurized milk and other liquid components. It can be installed indoors or outdoors, horizontaly or vertically.
Milk is filled into DONI®Tank from the base to avoid foam forming. When the tank is filled to the top level, the agitator switches on. It homogenizes the milk, to prevent it from dividing into different fractions. During stirring the milk moves uniformly within the whole of the tank which guaranties equal temperature and prevents the separation of fat. The working regime of the agitator can be controlled according to the specific requirements of each product. DONI®Tank is insulated with a stainless steel cover. It is equipped with spray balls for CIP, an air vent and a control panel. During filling the current levels of filling are indicated and during discharge the lowest filling level is controlled. In rare cases the tanks can be equipped with cooling elements for temperature control during longer storage periods.

DONI®Receive is a milk reception module that transports, de-aerates under vacuum and measures the volume of milk. It collects and stores the data of the volumetric measurement. The vacuum tank is gravity filled with milk from the transportation tank - level difference should be a minimum of 500mm. When the inlet of DONI Receive is positioned higher than the outlet of the transportation tank, a pump should be used. The pump is used only to start the process and then it is turned off.
The level sensors, valves and frequency controlled main pump system deaerates the milk and transports it to the storage tanks. Deaeration is done in vacuum, which is created by changes in the milk level in the vacuum tank. The vacuum for the de-aeration process is created by changes in the milk level in the vacuum tank.
Milk flow is measured by a electromagnetic flow meter, installed after the main pump. A plate cooler and milk filters can be added to the system as an option. DONI®Receive is generally used in medium and large dairy factories.