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Pump buy return on funding could be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A international producer of scented plastic rubbish luggage 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 resolution that gave them accuracy and consistency at the low move rates required, while additionally reducing their prices and bettering employee health. Yearly financial savings are so excessive that the return on investment for the pump system may be measured in days.
Seeking another for costly pre-scented plastic pellets
A global producer of scented plastic rubbish bags was on the lookout for an different selection to the usage of pre-scented plastic pellets, which required a dedicated silo for each of the 20 obtainable fragrances. The pellets are pneumatically conveyed to each silo from either tanker vans or rail automobiles and the producer was experiencing logistical issues related to preserving the silos filled. เครื่องมือที่ใช้วัดความดันโลหิต had to carry high prices for sustaining the inventory of the pre-scented pellets.
In addition, the heavily concentrated scents had been causing well being issues for the employees 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 event, these emissions led to complaints from neighbors and citations from the United States Environmental Protection Agency.
The company was seeking a method to use plain plastic pellets and apply scented oil directly to the plastic sheet instantly after the extrusion process to minimize back costs, logistical challenges, and energy use. They had tried to build such a system in-house but had struggled to achieve accuracy and consistency at the low move rates they required. They decided to seek a pump-based resolution that could immediately spray perfume on the good and cozy melted sheet plastic as a result of the in-house resolution couldn’t meet rigorous high quality management requirements requiring the spray-on scent to exactly 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 requested software experts if the pumps might be a match with their utility. After amassing information on the applying, an area supervisor for the pump manufacturer with in depth expertise in dosing and blending systems visited the plant to get a firsthand view of present operations and collect additional info.
Working with the pump manufacturer’s design group they developed a system answer using a Zenith B-9000 Series rotary positive displacement pump specifically designed for single stream chemical obligation purposes. The pump options an correct, repeatable, pulse free circulate in a compact design best for dosing additives similar to colors, flavors, and fragrances.
This type of pump is defined as rotary as a end result of the drive shaft is rotated as compared to different forms of pumps using a reciprocating movement and can be thought of to be a positive displacement sort as a end result of the displaced quantity is constant and doesn’t range.
Pumping motion is achieved by filling the gear teeth spaces and transporting the fluid across the outer diameter of the gears. When the gear tooth mesh, the fluid is displaced and compelled to the outlet facet of the pump. The flow fee can only be adjusted by growing or decreasing the pace at which the shaft is rotated. The pump selected offers precision grinding and lapping processes that lead to a precision metering instrument, producing exact, pulse-less, and repeatable fluid circulate.
The pumps offer extraordinarily tight working clearances to minimize fluid slip. Manufacturing tolerances on many components are to +/- 50 millionths of inch with surface finishes as clean as 4 micro inches or better. The pumps are supplied with an AC “closed loop” motor pace controller to take care of zero.1 % pump velocity accuracy.
The Zenith 9000 series pump is available in 11 sizes with capacities ranging from .003 to 300 GPH. Wetted elements are available in via hardened 440C collection stainless steel, specialty handled 316 chrome steel, and prime quality software steels such as D2, M2, M4 and CPM-M4 to provide good corrosion and abrasion resistance.
The bag producer chosen a mannequin with a magnetic drive (mag-drive) sealing choice, which can remove shaft leakage of fluids, rising plant safety and decreasing risky natural compound emissions. The use of a magnetic coupling additionally eliminates downtime because 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 manufacturer a steady, pulse free course of, which guarantees equal and uniform perfume distribution. By adding the scent directly to the bags after leaving the extruder, the plastic bag manufacturer not solely eliminated the necessity to have separate pellet silos for every scent, but in addition eradicated the necessity 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 additional systems. Over the past two years they have purchased greater than 30 systems, with plans to order extra. The producer can additionally be excited about having Zenith conduct annual subject calibrations of every 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 running, the return on investment for every system buy could be measured in weeks. To date, there have been no odor complaints for the reason that buyer put in the Zenith methods
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