ILMU AUTOMATION

What is specific for this control system is that it has been carried out in Ex realization. The system consists of Omron Touch panel 12’’ certified for Ex and control part, in which Omron PLC CJ series with two OMRON frequency invertors are placed. The control part is physically distanced from filler itself, and signals arrive and leave over Ex barrier. Also, the system is specific by the fact that servo drive is not used. Instead a classical (asynchronous motor and frequency inverter) used, contributed to lower the costs of entire system.

The control system has two basic operating modes: maintenance and automatic. In maintenance mode, basic system parameters adjustment is performed and faultiness is tested, while in automatic, there are two main modes: filling and washing. The system is completely freely configurable, both in mechanical and software sense – it has filling nozzles flexibility in each direction and sizes, while it can memorize up to 5000 recipes, or types of filling.

System performances depend on the type and quantity of material that is poured into bottle and can vary between 1000 to 3000 bottles per hour. Dosage precision is 0.1g and dosage error is below 1%. The system has an algorythm for dosage error autocorrecting as well as the ability to configure each nozzle independently. The display system for monitoring the filling allows two modes of monitoring: professional – it contains all measurements and calculations in tabular form and engineering – it contains the picture and algorythm of execution sequences. First regime is designated to operators in daily job execution, while the second one is designated to engineers during maintenance when certain problem exists.

The system also possesses a program for system washing with 5 options and operates according to time set or manually in dependence of washing type.

With this system productivity increase is possible, while reducing investments during machine purchasing. It was prior procured from abroad and was put together with components hardly available and difficult for maintenance.

Capability to finely position the limiter, in order to perform precise plate cutting to specified proportion.

Possibility to define different angles of cutting.

Possibility to adjusting the cutting duration, thus adapting to plate's thickness that is being cut.

Hydraulic pump and electro magnetic valve, limiter's electro motor drive

Scissors, limiter

Nah kalau pengen tahu tentang, spray dryer. Mesin yang digunakan pada industri-industri food dairy. Salah satu teknologi yang digunakan untuk menggubah susu cair menjadi bubuk, menggunakan sistem ini. Silahkan baca-baca untuk lebih jelasnya. Semoga bermanfaat.

A
MSD™ (Multi-Stage Dryer)/ FSD™ (Fluidized Spray Dryer) is a dryer that
combines spray drying and fluid bed drying technologies. Through the
process it produces coarse, agglomerated, free-flowing dustless powder.
This drying principle was first introduced in the early 70'es by using
the VIBRO-FLUIDIZER™ for the final drying.

A new dryer concept
GEA
Niro has always focused on developing dryers with improved energy
efficiency and final product quality, and in order to improve the dryer
efficiency even further, without deposit problems in the chamber, a
completely new spray dryer concept - named MSD™ (Multi-Stage Dryer) -
was developed around 1980. Since then GEA Niro has delivered more than
300 plants with the MSD™/FSD™ concept.

Drying in more stages
The first necessary step to reach the concept of the MSD™ was spray drying
in two stages. The MSD™/FSD™ operates with three drying stages, each
adapted to the moisture content prevailing during the drying process.
In the preliminary drying stage the concentrate is atomized by
co-current nozzles placed in the hot drying air duct.

The
air enters the dryer vertically through the air disperser at high
velocity, ensuring optimal mixing of the atomized droplets with the
drying air. The evaporation at this stage takes place instan-taneously
during the passage vertically down through the specially designed
drying chamber. In this primary drying stage the particles reach a
moisture content of 6-15 %, all depending upon the type of product.

Second-stage drying
At
such high moisture content the powder will exhibit high thermo
plasticity and becomes very sticky. But the design and air flow pattern
in the MSD™ plant is created in a way, that prevents the particles from
sticking to the drying chamber, but be led directly into the integrated
static fluid bed for the second-stage drying.

The integrated
static fluid bed is supplied with air at a sufficient velocity and
temperature for the second stage drying. The drying air from the
preliminary drying stage and the subsequent second-stage drying leaves
the chamber from the top.

VIBRO-FLUIDIZER™- final drying and cooling
When the powder has reached a certain moisture content, it is discharged via a rotary valve into a VIBRO-FLUIDIZER™
for the final drying and subsequent cooling. The drying/cooling air
from the chamber and VIBRO-FLUIDIZER™is passed through a cyclone,
separating the powder contained in the air. The fine powder is returned
back to the atomization device, the chamber cone (static bed), or the
VIBRO-FLUIDIZER™ depending on the requirements to the final powder bulk
density. On today's modern dryers the cyclone(s) are replaced by a CIP-able bag filter.

Powder structure
The
high velocity air inlet for the primary drying is creating a venturi
effect, the vacuum of which will suck surrounding air - with entrained
fines particles - into the wet atomizer cloud. This will result in a
"spontaneous agglomeration"

The powder will therefore exhibit
a coarse powder structure o riginating from this agglomeration in the
atomizer cloud. Further there is a continuous supply of dry fines
particles from the cyclones/bagfilter that will stick to the semi-dry
particles enhanching the agglomeration. For non-agglomerated powders
all fines from the cyclone/bag filter are returned to the VIBRO-FLUI DIZER™.

It
has been possible to operate this plant at a very high primary drying
air temperature (220-275 C) and an extremely short residence time,
still maintaining a good solubility of the powder. The physical
dimensions of this type of plant are small, and thus the requirements
to the size of the building are limited.

This together with
the improved drying economy (10-15 % less compared to conventional
two-stage drying), due to the high primary drying air temperature,
makes it a very attractive solution, and is today the preferred dryer
for top quality products like cold-water instant whole milk powder and infant milk formulas/baby foods. To improve the drying economy further a heat recovery system can be installed.

Source: www.niro.com

General Description

The batch-mixing system for mixing liquid products is a moderately priced solution for the automation and modernization of the preparation area. Its small dimensions permit an easy integration even into an existing system.

Special features of the system:

• Constantly high product quality
• Optimum use of raw materials without overfeeding
• Easy and lossfree product change
• Work facilitation for the personnel in the preparation area
• Low wear and tear and, as a result, low maintenance.

The batch-mixing system is arranged between the concentrates storage on the one side and the mixing tanks on the other side. In addition to the above-mentioned features, the concept of the system still considers the following advantages:

• High accuracy and reproducibility
• Suitability for CIP
• Safety against unintended mixtures
• Safety against operating errors
• Extensive monitoring of the system to avoid any switching and measuring errors or product deficiency
• Automatic switch-off compensation
• Batch logging

The selection of the best suitable flow meter is dependent on the product properties (viscosity, conductivity, etc.), the minimum quantities and the total flow rate of the system. The system is tubed and compactly mounted on a stainless steel base frame. The electric and pneumatic connections are established at the factory, i.e. the remaining assembly work to be done in situ is very low.

Example Scheme

Water and concentrates or essences are connected to the ingredients valves, which are designed as T-shaped valves with the effect that the free-flushing process is not affected by any stagnant spaces. The mixing tank is linked to the outlet line of the mixing system, which is completely filled with water, i.e. it is used as a so-called "full hose system" to guarantee an optimum accuracy. After the start, the preselected recipe is automatically processed, which means that concentrates and water are successively fed in the desired sequence. The concentrates are conveyed by a builtin pump. Water should bypass the concentrates pump at a higher capacity by means of an external pump. The concentrates pump is running at the same time in order to remove any concentrate residues. A 2-stage valve at the outlet of the system permits an accurate shut-off after each ingredient has flown through the system.

The deaerating and test vessel contains some level probes for the following functions:

• System stop in case of product deficiency
• Automatic deaeration
• Accuracy test of the flow meter

When the batch has been passed through, the system is again filled with water, and the start of the same or a different product is possible.