Process Equipment Update
Permanent solution for shaft sealing
P
roduct handling applications like mixers, blenders, agitators and rotary feed valves often suffer from product leakage and contamination due to ineffective sealing. Product loss occurs in these applications when the powder, liquid or bulk solid product migrates down the shaft, through the sealing device and into the atmosphere. Product contamination occurs when outside particulates enter the vessel through the seal and contaminate the product. Product loss and contamination lead to higher production costs, increased maintenance, environmental concerns and unsafe working conditions.
Traditional sealing methods use contact
in an effort to seal the vessel from product leakage and contamination.
Over time, the sealing interface wears, and the seal becomes ineffective and needs replacement. The short and unpredictable service life of contact seals makes them inadequate methods of reliably sealing these applications.
The Inpro/Seal Air Mizer offers a permanent sealing solution on product handling applications. The Air Mizer directs small amounts of air through a precision clearance between the throttle and the shaft, pressurizing the clearance to seal against both product leakage and contamination. The non-contacting, non-wearing Air Mizer is maintenance free and designed, claims Inpro/Seal, to last the lifetime of the equipment. The ‘unique’ custom engineered design fully articulates to accommodate radial and angular shaft movement and shaft run-out. n
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Inpro/Seal, Rock Island, IL, USA.
www.inpro-seal.com
Rupture disc offered with 90 or 95 per cent operating ratio
T
he HPX rupture disc is a scored reverse acting rupture disc.
This differential pressure relief device features an instantaneous full-open relief area for protecting equipment, vessels, systems and people from an overpressure condition. This high precision reverse acting rupture
disc offers proven performance in excess of 250 000 cycles at a 95 per cent operating ratio.
Some features of the HPX include: extreme cycling durability - proven performance in excess of a quarter million cycles, high precision - choice of 90 per cent or 95 per cent maximum recommended operating ratio, and high versatility - wide
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Travelling barrel heater plate HBR10 up to 100°C
H
illesheim’s latest development is a heated barrel dolly HBR10 for heating up to 100°C of 200 litres
DIN drums. The built-in heater for maintaining the temperature of the barrel’s medium has a range from frost protection to 100°C and can also be used outdoors (IP54). The inner diameter is 610 mm and the high is 175 mm. The material of the barrel heater is aluminium and steel. The barrel heater has a power rating of 1200 Watt with a voltage of 230 V/AC. Inside the barrel heating plate are integrated a sensor PT100. Various different regulator unit designs of Hillesheim are deliverable to provide temperature control for the HBR 10 barrel heater. The four steering and two bock rollers are made of polyamide (Ø 100 mm) and have a load capacity of 450 kg. A separate barrel sensor for measuring the temperature of the barrel substance is also available.
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Hillesheim GmbH is based in Waghäusel, Germany.
www.hillesheim-gmbh.de
range of burst pressures, materials and sizes. Additional benefits to the HPX rupture disc include: lower maintenance costs, increased productivity, and the product has approval for ASME Code Section VIII, Division 1 compliancy. n
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Continental Disc Corporation is based in Liberty, MO, USA.
www.contdisc.com
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