GRAVIT 2 : universal weigh belt feeder for granular materials
- HASLER Group
- DOSING
- GRAVIT 2 : universal weigh belt feeder for granular materials
GRAVIT 2 : high-precision universal belt feeder for granular materials
The GRAVIT 2 is a high-precision universal weigh belt feeder for granular materials designed to optimize user experience and maintenance operations.
The GRAVIT 2 dosing solution is the latest generation of the GRAVIT belt feeder designed by our experts. It combines performance, accessibility, modularity, and safety to meet the demands of continuous industrial processes (24/7).
This dosing solution is particularly suited to continuous industrial processes (24/7). Its turndown range of up to 1:100 makes it a unique solution in the high-precision industrial dosing market. This accuracy of ±0.25% is guaranteed over the entire dosing flow rate range.
With its robust design, folded side rails and integrated self-centring and self-tensioning system, it guarantees constant precision in dosing of the materials being transported.
It is modular and versatile, and available in five belt widths (650 mm to 1,400 mm) and its length can be adapted to the needs of the application. It adapts flexibly to the needs of continuous processes to optimise industrial dosing operations.
Technical sheet
Advantages of the GRAVIT 2 weigh belt feeder
High-precision and consistent dosing
The GRAVIT 2 belt feeder optionally features a self-centering device, with or without automatic tensioning, which will correct the belt alignment in case of product temperature variations or material load misalignment. This will enhance operational reliability and reduce production downtime.
Accessibility
Load cells, bearings (lubrication), belt index, belt deviations and rollers, handling of standard weights... thus optimized user experience and faster maintenance.
Modularity
The GRAVIT 2 industrial dosing system consists of a base module with an inlet hopper and multiple options, all equipped with plug & play functionality with all our controllers.
Safety
The basic weighing module and options comply with the requirements of the Machinery Directive 2006/42/EC, even without protective covers.
Reinforced strength and endurance
The folded stringers of the GRAVIT 2 system reinforce the structure of the feeder, increasing its resistance to mechanical stresses and its durability.
Easy servicing and swift maintenance
With the BCD (Belt Changeover Device) option: an ergonomic tool designed to facilitate easy replacement without the need to support the equipment. It allows for installing a new belt three times faster.
Optional integrated and reinforced protection
GRAVIT 2 is a weigh belt feeder that can be fully enclosed to increase operator safety and reduce dust in the environment.
Applications for the GRAVIT 2 weigh belt feeder
The GRAVIT 2 belt feeder is a gravimetric belt weighing solution that optimises continuous industrial processes (24/7) with annual maintenance:
CEMENT INDUSTRY
Clinker, gypsum, limestone, clay, anhydrite, slag and other granular products…
FERTILISER INDUSTRY
Fertilisers, urea or carbamide, phosphates, phosphate rock, ammonium, ammonium sulphate…
MINING, MINERALS AND METALS INDUSTRY
Iron ore, slag, pyrite, iron, alloys, coal bricks, calamine, metal pellets…
ENVIRONMENT
Shredded tyre waste or nut shells…
CHEMICAL INDUSTRY
Chemicals, plastic pellets, additives, plastics (cut), rubber, ash, mixture, phengite, gypsum, lime / pellets, fertiliser, limonite, graphite, calcined clay, coke…
Description and operation of the GRAVIT 2 industrial weigh belt feeder
The GRAVIT 2 weigh belt feeder is specially designed to satisfy the requirements of industries continuously (24/7), and stands out for its sturdiness, specifically due to its folded stringers that provide good structural stability.
It offers a flow range of up to 1:100 with accurate and consistent dosing of ±0.25% over the entire dosing range.
Its self-centring system option optimises the dosing accuracy of conveyed materials, guaranteeing precise distribution of materials.
The GRAVIT 2 industrial weigh feeder is available in 5 belt widths (from 650 mm to 1,400 mm), with a length adapted to the requirements of the application, to satisfy modularity needs specific to continuous process industries.
This dimensional flexibility allows optimum adaptation to a variety of industrial applications, making the GRAVIT 2 weigh feeder a versatile choice to improve the efficiency of dosing operations in an industrial context.
Operation :
The material is extracted from the storage silo by the belt, and is then conveyed to the weighbridge.
By taking into account the transport distance between the weighing bridge and the feeder’s discharge point, the flow rate is at the feeder’s discharge point.
The GRAVIT 2 weigh belt feeder can be controlled by the SCMIII control system. This controller collects essential data and signals to perform flow rate calculations, totalization, and regulation. The PDU console receives and displays all data and alerts generated throughout the dosing process in real-time. A single console can interface with multiple feeders (up to 8).
Options :
The GRAVIT 2 industrial weigh belt feeder is available with a number of options:
/ Self-centering with or without automatic belt tensioning
/ Spillage conveyor : the spillage conveyor facilitates the passage of larger blocks when the material’s particle size is variable. This prevents material blockages at the hopper outlet and avoids belt cuts.
/ Hammer gate : the hammer gate regulates the flow of bulk material in the dosing process, allowing precise control of the flow rate.
/ Vibrating inlet hopper : a vibrating inlet hopper ensures a regular and continuous flow of materials, and reduces the risk of blockages caused by sticky products (damp gypsum, clay, etc.).
/ Extended inlet hopper : this option facilitates the flow of materials that tend to arch.
/ Reinforced inlet hopper: A reinforced inlet hopper facilitates the flow of highly abrasive products such as clinker.
/ Single or double plate gate / Rod gate : these options allow the feeder to be isolated and the belt to be emptied for maintenance operations.
/ Material cover with hinged access hatch: the material cover prevents contact and dust emissions.
/ Special abrasion-resistant, high-temperature conveyor belt: a solution suitable for abrasive materials or those reaching high temperatures.
/ Belt Changeover Device (BCD) : the tool designed to ease belt replacement
/ Emergency control
/ Belt slip control
/ Rope emergency switch
/ High speed (up to 1m/s)
/ Complete stainless-steel construction
/ Other qualities & paint colors
/ ATEX version
HASLER Group global support service
To improve the efficiency and availability of your industrial dosing solutions, our specialists deliver a comprehensive range of services, including:
/ Technical audits and industrial process audits, and also in-depth tests.
/ On-site services including installation, commissioning, maintenance, assistance and remedial or preventive repairs,
/ Provision of material tests, simulations and dosing tests.
/ Revamping, retrofit and upgrade services to optimise the reliability of your dosing equipment, with or without remote assistance.
/ Retrofit and revamping services to improve your industrial dosing processes, covering changes to processes (flow rate, materials), resolving production defects (clogging, fusion, feeder precision) and extending the operating range (speed 1–100%).
/ Mechanical retrofit and revamping services for your dosing equipment, including abrasion resistance (belt), calibration chain and zeroing.
/ Revamping/retrofit/upgrade services to ensure ATEX compatibility.
/ Training on your equipment to enhance the skills of your maintenance or production teams.
/ Advice and supply of spare parts, and particularly controllers, electronic boards (I/O, communication, etc.), display and programming consoles, weight sensors (digital and analogue), mechanical parts (rollers, drums, extrusion screws, etc.), rubber belts, metal plates and speed measuring equipment (encoders, measuring wheels, etc.).