Pump purchase return on funding may be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A international manufacturer of scented plastic garbage baggage was looking for a substitute for using pre-scented plastic pellets. A serendipitous encounter at a tradeshow led them to a precision gear metering pump answer that gave them accuracy and consistency at the low flow rates required, while also reducing their costs and enhancing employee health. Yearly financial savings are so excessive that the return on funding for the pump system may be measured in days.
Seeking an alternative for pricey pre-scented plastic pellets
A international producer of scented plastic rubbish baggage was in search of an various to the use of pre-scented plastic pellets, which required a devoted silo for every of the 20 out there fragrances. The pellets are pneumatically conveyed to every silo from either tanker trucks or rail cars and the manufacturer was experiencing logistical points related to preserving the silos filled. They also had to carry high prices for maintaining the inventory of the pre-scented pellets.
In addition, the closely concentrated scents had been inflicting health concerns for the employees who complained of headaches. To mitigate this concern, each extruder line was fitted with a vacuum exhaust hood to expel the fumes to the outdoors. On event, these emissions led to complaints from neighbors and citations from the United States Environmental Protection Agency.
เครื่องมือวัดความดัน was looking for a way to use plain plastic pellets and apply scented oil directly to the plastic sheet instantly after the extrusion course of to minimize back costs, logistical challenges, and power use. They had tried to build such a system in-house but had struggled to realize accuracy and consistency on the low move charges they required. They determined to hunt a pump-based solution that might instantly spray fragrance on the warm melted sheet plastic because the in-house answer couldn’t meet rigorous quality management requirements requiring the spray-on scent to precisely match that of pre-scented pellets.
Finding an answer on a tradeshow flooring
Design engineers from the plastic bag producer attending the PackExpo show observed a working demonstration of precision gear metering pumps made by Zenith and asked application consultants if the pumps could be a fit with their application. After amassing information on the appliance, an space manager for the pump manufacturer with intensive experience in dosing and blending systems visited the plant to get a firsthand view of current operations and collect further info.
Working with the pump manufacturer’s design group they developed a system solution using a Zenith B-9000 Series rotary constructive displacement pump specifically designed for single stream chemical obligation purposes. The pump options an accurate, repeatable, pulse free circulate in a compact design ideal for dosing components such as colors, flavors, and fragrances.
This kind of pump is outlined as rotary as a outcome of the drive shaft is rotated as in comparison with different forms of pumps utilizing a reciprocating movement and can also be thought of to be a optimistic displacement type as a outcome of the displaced quantity is fixed and doesn’t vary.
Pumping motion is achieved by filling the gear tooth areas and transporting the fluid around the outer diameter of the gears. When the gear tooth mesh, the fluid is displaced and compelled to the outlet aspect of the pump. The circulate fee can only be adjusted by increasing or lowering the velocity at which the shaft is rotated. The pump chosen provides precision grinding and lapping processes that end in a precision metering instrument, producing precise, pulse-less, and repeatable fluid move.
The pumps provide extremely tight operating clearances to attenuate fluid slip. Manufacturing tolerances on many components are to +/- 50 millionths of inch with floor finishes as easy as 4 micro inches or better. The pumps are provided with an AC “closed loop” motor pace controller to maintain up 0.1 % pump velocity accuracy.
The Zenith 9000 sequence pump is on the market in 11 sizes with capacities starting from .003 to 300 GPH. Wetted parts are available in by way of hardened 440C series chrome steel, specialty handled 316 chrome steel, and top quality device steels similar to D2, M2, M4 and CPM-M4 to supply good corrosion and abrasion resistance.
The bag producer selected a mannequin with a magnetic drive (mag-drive) sealing possibility, which may eliminate shaft leakage of fluids, growing plant safety and lowering volatile natural compound emissions. The use of a magnetic coupling additionally eliminates downtime as a outcome of mechanical seal failures and eliminates the need for buffer fluids.
New solution reduces costs and presents uniform fragrance distribution
The new Zenith pump system gave the scented bag producer a steady, pulse free process, which ensures equal and uniform perfume distribution. By including the scent on to the bags after leaving the extruder, the plastic bag producer not only eliminated the need to have separate pellet silos for every scent, but also eradicated the want to vent the fumes that come from the pellets as they travel from the silos to the extruders.
The producer bought the primary system and after successful trials, ordered six further techniques. Over the past two years they have purchased more than 30 methods, with plans to order extra. The manufacturer can be thinking about having Zenith conduct annual area calibrations of each system.
After two years of operation, the manufacturer estimates a yearly financial savings of approximately $480,000 per skid in operation. With 30 skids now operating, the return on funding for every system purchase can be measured in weeks. To date, there have been no odor complaints for the reason that buyer put in the Zenith techniques
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