Pump purchase return on funding can be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A world producer of scented plastic garbage bags was looking for a substitute for the use of pre-scented plastic pellets. A serendipitous encounter at a tradeshow led them to a precision gear metering pump resolution that gave them accuracy and consistency at the low circulate rates required, while additionally decreasing their costs and bettering employee health. Yearly financial savings are so high that the return on funding for the pump system could be measured in days.
Seeking an alternative for costly pre-scented plastic pellets
A world manufacturer of scented plastic garbage baggage was in search of an various to the usage of pre-scented plastic pellets, which required a devoted silo for every of the 20 obtainable fragrances. The pellets are pneumatically conveyed to every silo from both tanker trucks or rail automobiles and the producer was experiencing logistical issues related to maintaining the silos stuffed. They also needed to carry high prices for sustaining the stock of the pre-scented pellets.
In addition, the heavily concentrated scents had been causing health considerations for the workers who complained of headaches. To mitigate this problem, every extruder line was fitted with a vacuum exhaust hood to expel the fumes to the outside. On occasion, these emissions led to complaints from neighbors and citations from the United States Environmental Protection Agency.
The firm was in search of a method to use plain plastic pellets and apply scented oil on to the plastic sheet immediately after the extrusion course of to minimize back prices, logistical challenges, and energy use. They had tried to construct such a system in-house but had struggled to attain accuracy and consistency at the low circulate charges they required. They decided to hunt a pump-based answer that could directly spray fragrance on the warm melted sheet plastic as a result of the in-house answer could not meet rigorous quality management requirements requiring the spray-on scent to precisely match that of pre-scented pellets.
Finding a solution on a tradeshow ground
Design engineers from the plastic bag manufacturer attending the PackExpo show noticed a working demonstration of precision gear metering pumps made by Zenith and requested utility consultants if the pumps might be a fit with their utility. After collecting info on the applying, an area manager for the pump producer with in depth expertise in dosing and blending methods visited the plant to get a firsthand view of present operations and collect extra data.
Working with the pump manufacturer’s design group they developed a system solution using a Zenith B-9000 Series rotary constructive displacement pump particularly designed for single stream chemical duty applications. The pump features an accurate, repeatable, pulse free circulate in a compact design best for dosing additives corresponding to colours, flavors, and fragrances.
This kind of pump is outlined as rotary because the drive shaft is rotated as in comparison with different kinds of pumps using a reciprocating motion and can be thought of to be a positive displacement kind because the displaced quantity is fixed and does not vary.
Pumping action is achieved by filling the gear tooth areas and transporting the fluid across the outer diameter of the gears. When the gear teeth mesh, the fluid is displaced and forced to the outlet side of the pump. The flow price can only be adjusted by growing or reducing the pace at which the shaft is rotated. The pump chosen offers precision grinding and lapping processes that lead to a precision metering instrument, producing exact, pulse-less, and repeatable fluid move.
The pumps supply extremely tight working clearances to reduce fluid slip. Manufacturing tolerances on many parts are to +/- 50 millionths of inch with floor finishes as smooth as four micro inches or better. pressure gauge ออก หลัง are supplied with an AC “closed loop” motor velocity controller to maintain zero.1 % pump pace accuracy.
The Zenith 9000 sequence pump is available in 11 sizes with capacities starting from .003 to 300 GPH. Wetted parts can be found in by way of hardened 440C series stainless-steel, specialty treated 316 stainless-steel, and high quality software steels similar to D2, M2, M4 and CPM-M4 to offer good corrosion and abrasion resistance.
The bag producer selected a model with a magnetic drive (mag-drive) sealing choice, which may get rid of shaft leakage of fluids, growing plant security and reducing unstable natural compound emissions. The use of a magnetic coupling additionally eliminates downtime as a result of mechanical seal failures and eliminates the need for buffer fluids.
New answer reduces prices and offers uniform fragrance distribution
The new Zenith pump system gave the scented bag producer a continuous, pulse free process, which guarantees equal and uniform perfume distribution. By adding the scent on to the baggage after leaving the extruder, the plastic bag producer not solely eradicated the necessity to have separate pellet silos for every scent, but additionally eliminated the need to vent the fumes that come from the pellets as they journey from the silos to the extruders.
The producer purchased the first system and after profitable trials, ordered six further techniques. Over the past two years they have purchased more than 30 techniques, with plans to order more. The manufacturer can also be excited about having Zenith conduct annual subject calibrations of each system.
After two years of operation, the manufacturer estimates a yearly savings of roughly $480,000 per skid in operation. With 30 skids now running, the return on funding for every system purchase may be measured in weeks. To date, there have been no odor complaints because the buyer put in the Zenith techniques
Share