Pump buy return on investment could be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A global producer of scented plastic garbage baggage was looking for an different selection to using pre-scented plastic pellets. A serendipitous encounter at a tradeshow led them to a precision gear metering pump solution that gave them accuracy and consistency at the low move charges required, while also decreasing their costs and improving employee health. Yearly financial savings are so high that the return on funding for the pump system may be measured in days.
Seeking an alternate for costly pre-scented plastic pellets
A world producer of scented plastic rubbish baggage was looking for an various alternative to using pre-scented plastic pellets, which required a dedicated silo for each of the 20 out there fragrances. The pellets are pneumatically conveyed to every silo from either tanker trucks or rail vehicles and the manufacturer was experiencing logistical points related to maintaining the silos filled. They also had to carry high prices for sustaining the stock of the pre-scented pellets.
In addition, the closely concentrated scents had been inflicting health concerns for the workers who complained of complications. To mitigate this concern, every extruder line was fitted with a vacuum exhaust hood to expel the fumes to the outdoors. On occasion, these emissions led to complaints from neighbors and citations from the United States Environmental Protection Agency.
The company was in search of a way to make use of plain plastic pellets and apply scented oil directly to the plastic sheet instantly after the extrusion process to reduce costs, logistical challenges, and power use. They had tried to build such a system in-house but had struggled to achieve accuracy and consistency on the low circulate charges they required. They determined to seek a pump-based solution that would directly spray perfume on the warm melted sheet plastic because the in-house solution couldn’t meet rigorous quality control requirements requiring the spray-on scent to precisely match that of pre-scented pellets.
Finding a solution on a tradeshow flooring
Design engineers from the plastic bag manufacturer attending the PackExpo show observed a working demonstration of precision gear metering pumps made by Zenith and asked software specialists if the pumps may be a fit with their utility. After amassing data on the application, an area supervisor for the pump producer with intensive expertise in dosing and blending techniques visited the plant to get a firsthand view of present operations and gather additional information.
Working with the pump manufacturer’s design group they developed a system resolution utilizing a Zenith B-9000 Series rotary constructive displacement pump particularly designed for single stream chemical obligation purposes. The pump options an correct, repeatable, pulse free circulate in a compact design ideal for dosing additives such as colors, flavors, and fragrances.
This kind of pump is outlined as rotary as a result of the drive shaft is rotated as in comparability with different forms of pumps utilizing a reciprocating movement and can be considered to be a positive displacement sort as a end result of the displaced volume is fixed and does not vary.
Pumping action is achieved by filling the gear teeth areas and transporting the fluid across the outer diameter of the gears. When the gear enamel mesh, the fluid is displaced and compelled to the outlet facet of the pump. เครื่องมือตรวจวัดความดันเลือดเรียกว่า can solely be adjusted by increasing or decreasing the velocity at which the shaft is rotated. The pump chosen offers precision grinding and lapping processes that lead to a precision metering instrument, producing precise, pulse-less, and repeatable fluid flow.
The pumps offer extraordinarily tight working clearances to minimize fluid slip. Manufacturing tolerances on many elements are to +/- 50 millionths of inch with surface finishes as easy as 4 micro inches or higher. The pumps are offered with an AC “closed loop” motor pace controller to maintain 0.1 p.c pump speed accuracy.
The Zenith 9000 series pump is on the market in 11 sizes with capacities ranging from .003 to 300 GPH. Wetted elements are available in by way of hardened 440C collection chrome steel, specialty treated 316 stainless steel, and prime quality tool steels corresponding to D2, M2, M4 and CPM-M4 to provide good corrosion and abrasion resistance.
The bag producer selected a mannequin with a magnetic drive (mag-drive) sealing possibility, which might remove shaft leakage of fluids, growing plant safety and lowering volatile organic compound emissions. The use of a magnetic coupling also eliminates downtime due to mechanical seal failures and eliminates the necessity for buffer fluids.
New answer reduces prices and presents 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 directly to the baggage after leaving the extruder, the plastic bag producer not solely eradicated the want to have separate pellet silos for every scent, but also eliminated the necessity 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 extra methods. Over the previous two years they have purchased greater than 30 methods, with plans to order more. 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 roughly $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 because the buyer put in the Zenith methods