When in addition to precision a high consistency of feeding is required, it is necessary to use a twin screw system. The D Series feeders, equipped with twin extraction screw, ensure a homogenous material flow due to the particular machine process, that ensure a perfect coupling. The D Series twin screw feeders are designed for feeding materials in powder and synthetic fibers and are especially recommended for very fine powders. Available both in volumetric and loss-in-weight release with an electronic load cell system, they are used in different configurations in all industrial sectors, from cement to chemicals and in the special releases made entirely of stainless steel AISI 304 in the food and pharmaceutical industries. Also available in ATEX release.

Vibrating screen model "CV vibrating channel", measuring 1400x500 mm, with an AISI 430 stainless steel dust collection tank, two sieving stages made of shaped and centrally perforated AISI 430 stainless steel sheets, complete with four lifting handles, sixteen knobs for closing the perforated sheets, a reversible flanged discharge outlet assembly made of AISI 430 stainless steel, AISI 430 stainless steel sheet with a product inlet hole and a splash guard, motor supports made of RAL 5022 painted steel, a channel support made of RAL 7016 painted steel tubing complete with ground fixing plates, two MVE700/15 motor vibrators positioned under the tank, and four elastic systems.

Our product range includes several types of drag conveyors: TRS - Drag chain conveyor with single drop forged chain: suitable for hauling fine-grained or small-sized material and relatively small capacities with any inclination (even up to 90°). TRD - Drag chain conveyor with double drop forged chain: suitable for hauling lumps and medium-large capacities, generally with inclination < 20°. TRA - Drag chain conveyor with double round steel chain: suitable for the same uses as the TRD, with the added advantage of having a lower vertical extension. TRP - Scraper-paddle conveyor with double chain with rollers: suitable for the same uses as the TRD, but can be operated at high speeds (0.7 m/sec) thanks to the mobile parts supported by the chain rollers that roll on guides. TRC - Submerged drag chain conveyor: suitable for recovering slag and ash immersed in water as a result of various industrial processes (e.g. extinguishing of boiler ash). TRL - Cleaning drag chain conveyor with linear axis: suitable for recovering dust beneath main conveyors such as pan or belt conveyors. TRLC - Cleaning drag chain conveyor with curved axis: suitable for recovering dust beneath main conveyors and recycling them on the latter.

Xefra dust explosion testing capabilities are provided in a dedicated industry-based laboratory. The laboratory team has extensive practical experience dealing with problems associated with dust handling and reactive chemical processing. Dust and gas explosion services complement laboratory testing capabilities. Our ATEX Testing facilities include: --Combustible Dust Screening Test: the Go and No-Go Test is the first step in screening for the possibility of dust explosibility. --Minimum Ignition Energy (MIE) Test: determines the energy required to ignite dust, critical in evaluating risk from low-energy sources like static electricity. --Burning test: assesses the flammability and combustibility characteristics of dust samples. --Minimum Auto-ignition Temperature Tests (MIT and LIT): evaluate the temperatures at which dust clouds in air on hot surfaces autoignite, vital for setting safe operating temperatures in dusty environments. --Dust and Gas Lower Explosivity Limit (LEL): establishes the concentration levels at which dust and gas mixtures become explosive. --Maximum Explosion Over-pressure (Pmax) and Dust Specific Characteristic (Kst): these tests determine the severity of potential dust explosions, aiding in designing effective explosion protection measures. --Gas Specific Characteristic (Kg), Limiting Oxygen Concentration (LOC), and Volumetric Resistance of Dust: these additional assessments contribute to a comprehensive understanding of dust explosivity and safety. --Combustibility Index (BZ) Test: evaluating the combustible properties of dust samples.

Dust stop: the new hopper system for concentrates and stops dust

The microwave-indicator DYNAguard M is used for monitoring the mass flow in open and closed transport processes also with big distances between sensor and conveyed material. Independent of particles moving direction solid materials with velocity of at least 0.1 m/s will be detected by passing the microwave field. Conveying or feeding problems of powders, pellets or granules are detected early and thus should be avoided. This helps to prevent plant failures like clogging, material loss, idle or other serious difficulties. DYNAguard M has to be installed with an angle of 45° up to 90° of flow direction. Moving mechanical parts e.g. rotary valves, propellers or similar should not be in the detection field, because this might be detected as flow of material. If these 'disturbance source' can not be displaced, they have to be shielded or a DYNAguard of electrostatic type as DYNAguard P should be used.

The DYNAmas flowmeter is used for continuous flow measurement of all kinds of bulk materials by applying the capacitive measuring principle. Accurate online flow measurement in free fall, as well as for pneumatic transport systems. Product concentration and transport speed are simultaneous and independently measured, and then used to calculate the mass flow rate. Thus, the measuring system is independent of fluctuating transport speeds. The device, available in different nominal diameters, is easy to calibrate and its reduced dimensions allow hassle-free integration into existing systems. In essence, DYNAmas contactless measuring is wear-free. The DYNAmas flowmeter has been designed to handle any bulk material flow, starting already with small volumes. Accordingly, the device proves suitable for many different applications. Configuration and measured values are displayed via the DYNAcon communication unit, which also provides various PLC interfaces.

Using state-of-the-art microwave technology the flowmeter DYNA M-flow is designed for flow measurement in metallic pipelines from a few kg/h to many t/h. The system is suitable for on-line measurement of powders, dust, pellets, and granulates. The measurement principle of the DYNA M-flow is based on the physical Doppler-Effect, whereas the sensor generates a uniform field in the microwave frequency range inside the pipeline. These microwaves are being reflected by particles passing through the pipe. Calculation of frequency and amplitude changes allows an accurate determination of the solid's mass flow rate. Nonmoving particles like dust accumulation are excluded from calculations.

Moisture in solids is a fundamental parameter that affects both product quality and the economic efficiency of production. DYNAmoist determines the product moisture directly in the process, in real time. The measurement results can be used to control a dryer or an automatic humidification system and to continuously monitor the production process. DYNAmoist uses a capacitive measuring method that determines the total water content of the material, not just surface moisture. The sensor’s field lines penetrate up to 200 mm into the material. The measurement accuracy is up to 0.1%, depending on the bulk material and the specific application. The latest version of the analysis software allows precise and easy calibration directly from the graphical display of the measured values. It is also possible to select up to 16 different product data sets via 4 digital inputs, without the need for a PLC connection.

DYNAsize represents an innovative solution for the continuous, real-time measurement of solid particle size in industrial processes. The system enables in-line determination of the particle size distribution of free-flowing bulk materials within a range from 170 to 6000 µm, completely eliminating the need for manual sampling and laboratory analysis. Thanks to continuous process data acquisition, DYNAsize is fully compatible with Industry 4.0 principles and allows constant control of product quality and plant performance. The device enables early detection of overloads, overflows, and screen anomalies, supporting the adjustment and optimization of sieving and grinding processes, as well as continuous monitoring of incoming raw materials. Measurement takes place directly within the process: the free-falling bulk material passes through the sensor tube section, and a representative fraction of the flow is continuously directed to a high-precision optical measurement system. The optics are protected by scratch-resistant borosilicate glass and a purge air system that prevents contamination and ensures reliable operation even in harsh industrial environments. Unlike traditional methods based on sampling and off-line analysis, DYNAsize performs continuous measurement of the particle size distribution (PSD) on the material in flow. This approach eliminates delays associated with laboratory testing and provides immediate insight into process behavior. Configurable limit values allow alarm activation via three relays, while the particle size distribution is displayed through the dedicated DYNAsize Viewer software and can optionally be exported to external databases for advanced analysis and traceability. Developed in collaboration with CeMOS and Hochschule Mannheim – University of Applied Sciences, DYNAsize is a unique solution that sets a new standard in continuous particle size monitoring, improving process efficiency, product quality, and operational safety.

Our EasyMounts contain everything the user's heart desires! As the name suggests, the mounting is super easy and thus facilitates the use within your application. The EasyMounts are characterised by small dimensions and excellent technical properties. They can therefore be mounted in a variety of ways. The sensor can simply be glued to the desired position or attached with one of our EasyMount holders. With the integrated EasyTeach function, the sensitivity as well as the switching distance can be adjusted almost by itself. There are two ways of doing this: either the EasyTeachbyMagnet is used by means of magnets or the EasyTeachbyWire by means of a cable. The easy and quick completion of both variant settings allows you to focus on your core competence. Furthermore, by using the latest production techniques, the components of the sensors are embedded in the plastic. The EasyMounts are waterproof and work wear-free.

ECOFOG: industrial dust suppression plants through the production of micronized fog. Thanks to IMPACT technology it is possible to nebulize additives and anti-odors for diffusion into the environment. The advantage of ECOFOG? It's an energy-saving technology! To produce artificial fog, it works at low pressures: 2-3 bar air; 0.1-1 bar water. Typical applications: crushing plants, mills, transfer belts and truck loading/unloading points, raw materials storing areas, solid waste recycling plants, etc.

ELD - Din-Type Low-speed Bucket Elevator Bucket elevator with chain strands and shackles The chains are placed on the sides of the buckets to ensure central discharge aligned with the elevator. The main features of the elevator include the following: - standard dimensions (i.e. bucket width) of the same series as for high-speed elevators, starting from 315 mm - sturdy buckets, suitable for dredging on the reinforced outer side and discharging on the opposite internal side. The sides are fitted with two perforated brackets for connection to the shackles. - drive wheels with hub and smooth rings for driving the chains through friction - return wheels of the same type as the drive wheels - chain strands manufactured according to DIN 764 specifications (or, alternatively, DIN 766 type strands with shorter links) - DIN 745 type shackles for connecting the buckets to the chains - tangential feed inlet on idle station - central discharge outlet under drive station - standard counterweight tensioning system with load equivalent to roughly 80% of the weight of the material contained in the up run Drive Station The top section of a bucket elevator that drives it through the drive assembly and discharges raised material through gravity from a central outlet. It consists of a sturdy structure with brackets for shaft supports, an upper cover comprising two parts that can be removed for inspection and maintenance, a drive shaft with two smooth ring wheels supports with bearings and dust-proof seals for the drive shaft Inspection and adjustement doors; de-dusting flange Central Discharge Outlet On low-speed bucket elevators, material is discharged through gravity in the central zone of the head section, which includes an appropriate hopper located under the drive shaft. A suitable element protects the hopper against wear caused by the material being discharged Find out more at www.gambarotta.it