Our system includes bag dumping stations, Auto De-bagging systems, Big Bag Unloading & Conveying systems, shifters, mills blenders, packing machines which are interconnected by power transfer system. In a result we ensure that powder during the process is not exposed to atmosphere, dust is not generated, chances of cross contamination is reduced in minimum and wastage of the powder’s are reduced to maximum of it.

More over our system are completely dry in operations means does not need any lubricant for cooling. The hopper’s are efficiently designed which are light in weight and easy to clean and wash. The contact parts are in SS316 & non contact parts are in SS304. The vacuum units are available in SS or powder coated version as per customer choice. The hoses uses are food grade, antistatic, transparent and flexible. Hopper are provided with ‘L’ & ‘M’ category filter and safety filter chamber on vacuum units can be provided with ‘L’ or ‘M’ cat star filter with H cat filter on exhaust if required.

RGS Powder Transfer Systems can be produced in ATEX version for zone 21 & 22 in dust and zone 1& 2 for vapours i.e; gas zone. The antistatic filter’s provided in system are always M category & antistatic. The run cycle of the system ensure that filter’s are cleaned after every load to maintain the efficiency of powder transfer system.

We can handle powders starting with bulk density of 0.12 g/cm3 to 1.2 g/cm3, even for the powders which are sticky & hygroscopic in nature, may be non free flowing. Our customized powder transfer systems makes the powders flow easily & efficiently in most challenging situations too.

The piping used for product & air to travel are weld free which helps the users to inspect & clean the lines easily according to their SOP of cleaning. The pipe work which includes bends deviations, T junctions, junction sleeves, Straight Pipes can be provided in SS316 or 304 as required.

Powder processing industries has used various kinds of powder transfer system but RGS products with innovative technology & recipe management system has become the preferred choice of customers. Let us understand the concept and working of Powder Transfer System.

What is it?
The process in which powders, granules and dry material move in enclosed pipeline or hose using negative pressure developed by a vacuum pump is known as Powder Transfer System.

The process equipment in needs:

1. Buffer hopper- raw materials are unloaded into the buffer hopper from bags.


2. Product hopper- product is transferred to product hopper and dispersed to required machine.


3. Safety filter chamber- prevents fines entering to vacuum pump.


4. Vacuum unit- creates sufficient vacuum & airflow to make the product move from pickup point to destination.

How it works!
The pump creates a negative pressure in the safety filter chamber, product hopper & pipe/hose which is connected to pickup point which may be bag & buffer hopper and due to the negative pressure & flight given by airflow the powder particles start travelling at a speed of 20m/sec to 30m/sec and reaches the product hopper which is always with filter to stop the fines going to the safety filter chamber of pump & stop them in product hopper only. Once the loading time is completed, the discharge valve in hopper opens & dispenses the product into desired machines at the same time filter cleaning starts & trapped fines in filter settle with courser powder particles. Discharge valves closed after dumping the complete load & suction start again to load another batch of powder. This process keeps on happening till the time complete batch is transferred to required machine.

How to select the suitable powder transfer system-Product characteristics and specifications-
The first step to design a PTS is to understand the product which is required to be transferred using PTS. We need to know products physical & chemical properties including flow ability, micron size of particles, moisture content, bulk density and distance (horizontal & vertical) which product has to travel to reach destination & transfer rate. Based upon these parameters the size of product hopper, type of filter and suitable vacuum unit is decided.

Location of hopper and vacuum unit-
Product hopper is always placed right on the top of the machine in which powder has to be dropped so the space availability on the top of mixer & packing machine etc is important to know. Vacuum unit can be placed in production area near to hopper in SS or can be placed at distance of 10-15 Mtr on service floor & area adjoining to product area in powder coated version.

Transfer rate:
Transfer rate may vary from 50kg/hr to 5000kg/hr. But it is actually depends on physical & chemical properties of the product including distance to be travelled by the product knowledge of product behaviour & distances help to achieve desired transfer rate using a suitable vacuum pump & hopper is also designed accordingly to make the system deliver the required result.

How to make a choice- Lean Phase & Dense Phase:

Dense Phase- When the powder needs to be transfer as a mix of different powders with different specific weight & homogeneity of the product should be intact while transportation, dense phase conveyor is always recommended as the travel velocity of the powder particles is reduced to minimum, may be <20m/sec and powder moves in plugs not in flight mode. The dense phase conveyors which are vacuum based has a limitation of transfer rate and cannot make the powder travel for more than 5-7 mtr in vertical. The max transfer rate which can be achieved is 2500-3000 kg/hr.

Lean Phase (Dilute Phase)– The lean phase conveyors which are vacuum based are used to transport powder granules and dry material to a larger distance may be upto 50-100 metres and quantity of 5000-10000 kg/hr is also possible. The particle generally moves at a speed of 30 meters/sec or more and reaches the destination very fast in comparison to dense phase conveyors. This kind of Powder Transfer System is recommended where lots of powder needs to be transfer in less time and travel distances are long.

Flameproof Vacuum Systems- If powder is explosive in nature or has volatile ingredients we always’ recommend ATEX certified systems. Especially for sugar and powders with solvents mixed in them. These systems are designed to make the static charge travel from point of generation to the earth. Means whole system and all the components are completely grounded. Antistatic Filters, Hoses, Flameproof motors and IP65 Panel is required to make the system Flameproof.

RGS is a well known brand in helping you make the best choice for installing Powder Transfer System for your plant depending on the type of material to be transferred. RGS can design the best suitable system as per the need of the application. We offer you with clear terms of maintenance and consumption costs.