Automatic chemicals powder dosing

Automatic chemicals and auxiliaries powders dosing

Particular attention is paid to the design and construction of powder dispensers as, very often, the dosage of powders is a really complicated operation.

Even the storage of powders or granules in the loading hoppers requires an accurate analysis in order to correctly size both the inclinations of the walls and the geometry of the loading and unloading openings.

Very often, in order to facilitate the release of dust, the hopper is equipped not only with mechanical bridge breakers , but also with pneumatic or electric vibrators . In this case we can really talk about real vibrating hoppers .

Another element of considerable importance for the success of precision dosing is the correct sizing of the powder transport system towards the dosing point.

This system must be designed in the most congruous way possible in order to obtain fast and precise gravimetric and / or volumetric dosers .

Among the various types, the auger doser for powders, equipped with flexible auger conveyors , are the most widely used systems.

Optionally, it is possible to place a hood for the suction of the poor that evaporate during the loading operation.

Finally, it is possible to connect a scrubber or an abatement tower to the hoods .

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Hoppers of various capacities

The hoppers are used to feed the conveyor systems with the products to be dosed, whether in powder or granular form. They are built both in AISI 304/316 stainless steel and in anti-corrosion plastic material such as PP ( polypropylene ) or PVC ( Polyvinyl chloride ) , depending on the need. The geometries and dimensions may vary according to the project. all the hoppers can be equipped with a support frame, a hood for suction of residual dust as well as various accessories such as: Vibrators , bridge breakers , level probes, etc.

ACCESSORIES

Mechanical bridge breakers in various configurations
Electrovibrators with adjustable eccentric masses
Vibrators or pneumatic hammers
Fluidizing porous sets
Rotary vane level indicators
Capacitive sensors
Membrane level indicators and other more specific ones

TECHNICAL FEATURES

TPA (Lt.)	100	150	200	250	300	350	400	500	600
A mm	506	900	900	900	900	900	1204	1024	1204
B mm	506	650	650	650	650	650	904	904	904
H mm	742	840	900	980	1070	1190	1004	1094	1184
Pick slope (? In degrees)	30°	30°	30°	30°	30°	30°	30°	30°	30°

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Flexible screw conveyor

The flexible screw conveyors , particularly suitable for powder dosing and granule dosing, are widely used in the food, chemical, pharmaceutical, cosmetic and plastic industries. blends.

Flexible conveyor for powders and granules

They are made with 40 mm external diameter tube. to 125 mm. and suitable for the characteristics of the transported material. Capacity from 120 kg / h to 10,000 kg / h The actual capacity is also a function of:

Spiral rotation speed

1. Inclination to pick up
2. Smoothness of the material
3. Type of withdrawal: suitably shaped hopper, silo, drum, pile.

This transport system is able to:

- Do not demix, during transport, mixed and dosed products.
- Homogenize while transporting.
- Lending itself to multiple combinations.
- Do not pollute because it is hermetic and mechanical.
- Ensure silent operation in the workplace.
- Easily fit into existing systems because it is flexible.
- Upload and download anywhere along the route.
- Overcome significant differences in height and cover considerable distances.
- On request special executions and in compliance with ATEX 949 / CE directive for Zone 2 – 22 and Zone 1 – 21

Withdrawal is assumed with:

– Conveyed material: free flowing granular powder
– Regular continuous flow
– Apparent specific weight 1 kg / dm³
– Initial pick-up stroke with inclination α = 30 °
– Rotating spiral at 580 rpm.
(930 rpm applications are also possible)
* For the flow rate in kg / h multiply for the specific weight of your product. product

The transport potential is linked to many variables and therefore the tabulated values are purely indicative, please contact our. technical office for your specific application.

TECHNICAL FEATURES

MODEL	FLOW LITERS / HOUR
MAR 40	140
MAR 55	400
MAR 65	850
MAR 70	1250
MAR 80	1800
MAR 90	2500
MAR 100	3500
MAR 110	4600
MAR 125	7500

bending of the granule and powder conveyor

MODEL -De (mm)	R (mm)
40	1000
55	1400
65	1600
70	1800
80	2500
90	2800
100	3000
110	3800
125	4500

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