SEMI-DENSE PHASE CONVEYORS

The HC series semi-dense phase conveyors offer a range of high-capacity semi-dense phase pneumatic conveying for single or multiple ingredients. They are designed to handle materials that are abrasive and fluidizable. Standard units have conveying capacities as much as 80 tph and more, depending on model and application. HC Conveyors can be used for bulk bag, railcar, and trailer unloading and in-plant transfer. Equipped with optional load cells, HC Conveyors can weigh and batch and provide inventory control.

HC Series Conveyors use only positive air pressure for both vacuum loading and pressurized conveying, and Cyclonaire makes high-efficiency medium-pressure blower packages specifically tailored to the job. A proprietary Cyclonaire venturi assembly creates the vacuum used for loading. In vacuum mode, the conveyor fills its transfer vessel by drawing material from one or more storage silos, hopper-bottom railcars, trailers, or other supply sources. A high-level control senses when the transfer vessel is full and automatically switches to the pressurized discharge mode for conveying material from the vessel to its destination. Integral dust separation minimizes venturi wear.

Side inlet loading is an option for applications with limited headroom. Side inlets reduce both overall and vacuum height and may be located low in the transfer vessel for fine, aeratable materials. Because HC units operate only on positive airflow, there is no need for high-maintenance filtration. Standard automated controls allow for minimal operator supervision. A variety of control options are available that can be integrated into existing plant control platforms.

HC Conveyors use 15-psig convey air to move materials at a balanced combination of intermediate line velocities between 2,000 and 3,000 fpm and high material-to-air ratios to minimize abrasion and optimize efficiency. Carbon steel transfer vessels are standard. Stainless steel and epoxy coated models are available, as are portable HC Conveyor models and custom-built units. Other options include load cells, multiple inlets, and a butterfly outlet valve. Cyclonaire Corporation, (+1) 800-445-0730
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AIR QUALITY SYSTEMS

This firm brings turnkey capabilities and breadth of experience to creating air quality systems for cement plants and other large process and manufacturing facilities. The company provides a single source of system diagnosis, testing, engineering, fabrication and installation, whatever the project requires. It offers 100 years of solution successes and proven project management experience across the full spectrum of manufacturing and process industries. This company's units are industry leaders in air system engineering, filter design, system fabrication, and installation, assuring quality control. Vertical integration enables fast-track, on-time, on-cost project management and full-service turnkey capabilities. CECO Environmental Sales, (+1) 513-458-2600
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AIRLOCKS

These rugged airlocks are available in customized fabricated and machined models for pneumatic systems, gravity feeds, and volumetric discharge devices. Fabricated models handle dust collection, plastics, feeds, and corrosive chemicals where pressure differentials are 20 in. of water column or less. Urethane wipers provide a tight fit between fabricated rotors and housings. These machined airlocks have cast housings for added durability and are designed for higher pressures as well as difficult and abrasive materials. Rotor to housing fit is a tight four to six thousandths of an inch. Both models offer carbon and stainless-steel rotor and housing options. Airlanco, (+1) 800-500-9777
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OPACITY MONITOR

This company announces the availability of the Model 445, an opacity and dust concentration monitor with built-in test functions that include automatic four-point linearity and optical surface contamination checks. Joining the firm's family of stack gas monitoring instrumentation, the Model 445 measures the mass concentration of dust in stack effluents from power plants, cement and steel plants, and other industrial sites that require a continuous emission monitoring system. The Model 445 meets all U.S. EPA PS1 and ASTM 6216-98 requirements.

The Model 445 also has a range of contamination correction that can be up to 50% of light attenuation resulting in longer free maintenance intervals. The optical and electronic elements used in the monitoring system are contained within the sender/receiver unit. A durable pulsed LED serves as the light source and an integral sighting device eases alignment of the sender/receiver and the reflector units. To protect the optical surfaces from dust and high temperature, the sender/receiver and reflector are purged with clean plant air. The connection unit contains the display, operating elements, and all connections. Options include an RCU-MS remote control unit and remote diagnostics via modem. Thermo Fisher Scientific Inc., (+1) 800-232-0430
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IDLER/ROLLING BEARING ISOLATOR

A new Belt Conveyor Idler/Roller Bearing Isolator was designed, the manufacturer asserts, to increase productivity, save energy, and increase safety in operations that use belt conveyors in bulk material-handling applications. Before the advent of its latest design, the company adds, end users dealing with elastomeric seals — tiny, spring-loaded, plastic contact-seal devices that rub on the exterior of the idler roll — to protect idler bearings had to contend with a failure-prone and high-maintenance belt-conveyor system. By contrast, the new noncontacting, nonsparking bronze labyrinth-type seal is said to provide safe, permanent bearing protection that never wears out and requires only a negligible amount of energy to operate.

As many as 10,500 bearings and bearing protection devices on conveyor rollers may be used per mile of run. When an idler fails, the most likely cause is bearing damage due to contaminants (dust or moisture) entering the bearing environment. Oftentimes, the plastic has worn out, grooving the shaft or burning to a crisp at the point of contact. The failure of an elastomeric seal then draws contaminants into the housing, where they condense and contaminate the lubricant and cause the bearings to fail. The end result is a seized roll, belt damage, or worse.

To counter, the company modified its bearing isolator — a compound labyrinth bearing protection device, invented and patented in 1977 — for use in bulk solid applications. In the event of main rolling element bearing failure, it also can operate temporarily as an emergency sleeve bearing. Completely exposed at each end of the idler, it permits measurement of generated heat with a thermographic sensor.

The Belt Conveyor Idler Roller Bearing Isolator is custom engineered to suit individual applications. Conforming to existing clearances, housings and bearing patterns, it reportedly is easy to install and can be retrofitted to any top-side and return-frame assemblies in any belt width or troughing angle for any brand of conveyor.

The new bearing isolator is available in all idler configurations, including CEMA B, C, D. It suits any idler type, e.g., transition, impact, troughed, training, return belt, flat carrier, impact, rubber cushion return, self-aligning, self-aligning return, offset center roll, picking and feeding, unequal length troughed, wire rope, wire rope return, low-profile, “V” return idler, variable trough, rubber disc, ceramic, live shaft, side guide, and two-, three- and five-roll garland. Inpro/Seal, (+1) 800-4447-0524
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