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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 world producer of scented plastic rubbish luggage was on the lookout for an different 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 on the low flow rates required, while additionally reducing their costs and bettering worker health. Yearly savings are so excessive that the return on investment for the pump system could be measured in days.
Seeking another for costly pre-scented plastic pellets
A international manufacturer of scented plastic rubbish luggage was on the lookout for a substitute for the utilization of pre-scented plastic pellets, which required a devoted silo for each of the 20 out there fragrances. The pellets are pneumatically conveyed to each silo from either tanker trucks or rail vehicles and the manufacturer was experiencing logistical issues related to maintaining the silos filled. They also had to carry high costs for sustaining the stock of the pre-scented pellets.
In addition, the heavily concentrated scents had been inflicting well being concerns for the workers who complained of headaches. To mitigate this problem, each 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 company was in search of a means to make use of plain plastic pellets and apply scented oil directly to the plastic sheet immediately after the extrusion course of to reduce prices, logistical challenges, and energy use. They had tried to construct such a system in-house but had struggled to attain accuracy and consistency on the low flow rates they required. They determined to hunt a pump-based resolution that could immediately spray perfume on the warm melted sheet plastic because the in-house solution couldn’t meet rigorous high quality control requirements requiring the spray-on scent to exactly match that of pre-scented pellets.
Finding a solution on a tradeshow ground
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 application consultants if the pumps may be a fit with their application. After amassing information on the application, an area supervisor for the pump producer with intensive expertise in dosing and mixing methods visited the plant to get a firsthand view of current operations and collect additional info.
Working with the pump manufacturer’s design group they developed a system resolution using a Zenith B-9000 Series rotary constructive displacement pump specifically designed for single stream chemical obligation functions. The pump options an correct, repeatable, pulse free circulate in a compact design perfect for dosing additives corresponding to colors, flavors, and fragrances.
เกจวัดแรงดันแก๊สco2 of pump is defined as rotary as a end result of the drive shaft is rotated as in comparison with different types of pumps utilizing a reciprocating motion and can also be thought of to be a constructive displacement kind as a end result of the displaced volume is constant and doesn’t differ.
Pumping motion is achieved by filling the gear enamel areas and transporting the fluid across the outer diameter of the gears. When the gear tooth mesh, the fluid is displaced and forced to the outlet aspect of the pump. The flow rate can solely be adjusted by increasing or reducing the pace at which the shaft is rotated. The pump chosen presents precision grinding and lapping processes that lead to a precision metering instrument, producing precise, pulse-less, and repeatable fluid move.
The pumps supply extraordinarily tight working clearances to reduce 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 velocity controller to maintain zero.1 percent pump pace accuracy.
The Zenith 9000 collection pump is on the market in eleven sizes with capacities ranging from .003 to 300 GPH. Wetted parts can be found in by way of hardened 440C collection stainless-steel, specialty handled 316 stainless steel, and top quality device steels such as D2, M2, M4 and CPM-M4 to supply good corrosion and abrasion resistance.
The bag producer selected a model with a magnetic drive (mag-drive) sealing possibility, which can get rid of shaft leakage of fluids, growing plant security and lowering risky natural compound emissions. The use of a magnetic coupling also eliminates downtime due to mechanical seal failures and eliminates the need for buffer fluids.
New solution reduces costs and provides uniform perfume distribution
The new Zenith pump system gave the scented bag manufacturer a steady, pulse free course of, which ensures equal and uniform fragrance distribution. By including the scent on to the luggage after leaving the extruder, the plastic bag producer not only eradicated the need 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 manufacturer purchased the primary system and after successful trials, ordered six extra systems. Over the previous two years they’ve bought more than 30 techniques, with plans to order more. The manufacturer can be thinking about having Zenith conduct annual area calibrations of every system.
After two years of operation, the producer estimates a yearly financial savings of roughly $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 rationale that customer put in the Zenith techniques
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