Bulk Equipment, Bulk Technology, Sensors

Thayer Scale MH model heavy industry weigh belt for performance and accuracy

Thayer Scale’s model MH heavy industry weigh belts were originally designed for coal fired power plants and steel mill service to feed coal, limestone, mill scale, dolomite, iron ore pellets, fluorspar and coke.

Thayer Scale’s model MH heavy industry weigh belts were originally designed for coal fired power plants and steel mill service to feed coal, limestone, mill scale, dolomite, iron ore pellets, fluorspar and coke.

The model “MH” has been subjected to extreme environmental conditions such as abrasive dusts, corrosive fumes, wide temperature fluctuations and vibrations without any detrimental effects on performance or accuracy.

Its rugged construction coupled with the most advanced electronic controls make it truly the world’s most reliable feeder.

The Model MH supports belt widths from 48” to 66” inches with a material density range (lbs./ft3) from 10 – 200. The heavy channel feeder frame design (15” stringer depth) provides rigid support for the material load, belt and idlers. A rigid box frame resists deflection and deformation. It is easy to enclose with removable covers for access to the conveyor section. Spill hoppers, chutes and scavengers are easily attached for dust removal.

A heavy-duty slack belt is driven from the head pulley located at the outlet end of the feeder, rather than the tail pulley located at the end inlet providing more accuracy. The inlet chute is custom engineered to ensure uniform withdrawal of material from storage bins.

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Close to 100 per cent of the scale’s capacity is used to weigh material. Dead weight of the weigh idler and belt is mass-counterbalanced, thus providing excellent resolution and a high signal to noise ratio.

The combination of mass counterbalancing against tare loads, frictionless flexure-mounted levers and a high-resolution transducer produces a force measuring system beyond compare.

Thayer Scale’s rugged load cell design assures reliable and accurate performance for the life of the weigh feeder.

A rugged and accurate digital speed sensor is coupled directly to the feeder tail pulley not the drive pulley to measure the true speed of the belt via rotation of the idling pulley, not an inferred belt speed based on motor speed. This arrangement also permits immediate detection of a broken belt. Skirt boards are located inside the belt flanges to provide two barriers to contain material and prevent spillage.

Thayer Scale’s optional automated test weight lifter (ATWL) provides an automated means for applying a precision test weight to allow completely automatic calibration.

Thayer Scale’s proprietary force measurement suspension system (FMSS) utilises a series of steel flexure plates to transmit gravimetric loads vertically from the load receiving element through levers to the specifically selected controls.

Learn more about the MH Model heavy weigh belt and Thayer Scale at www.thayerscale.com or email Sales@thayerscale.com.

The model MH secondary lever system features

  • Single or multiple vertically suspended weigh idler measures only vertical forces-therefore is not affected by changes in idler friction
  • Minimum area for material build-up
  • Force aligned to totally eliminate the effects or changes in belt tension caused by material head loading or belt tracking adjustments
  • Weight transducer is located out of material handling area and not affected by dust, corrosion or heat produced by the material
  • Weight sensing lever system is a summing lever so that the load (weight) is measured accurately, regardless of belt tracking or load position
  • Weight sensing system is totally enclosed and requires no maintenance
  • Weight signal represents only material load; the dead load (belt & idler) is completely mass counter-balanced
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