Pump buy return on funding can be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A world manufacturer of scented plastic rubbish bags was looking for an alternative to the use of 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 on the low flow charges required, while also decreasing their costs and improving worker well being. Yearly savings are so excessive that the return on funding for the pump system may be measured in days.
Seeking an alternate for pricey pre-scented plastic pellets
A world manufacturer of scented plastic rubbish bags was in search of an various to using pre-scented plastic pellets, which required a dedicated silo for each of the 20 obtainable fragrances. The pellets are pneumatically conveyed to every silo from both tanker vehicles or rail cars and the producer was experiencing logistical issues related to maintaining the silos crammed. They also needed to carry high prices for maintaining the inventory of the pre-scented pellets.
In addition, the closely concentrated scents had been causing health considerations for the employees who complained of headaches. To mitigate this concern, 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 way to use plain plastic pellets and apply scented oil on to the plastic sheet immediately after the extrusion process to scale back prices, logistical challenges, and power use. They had tried to construct such a system in-house however had struggled to realize accuracy and consistency on the low flow charges they required. They determined to hunt a pump-based solution that might directly spray perfume on the warm melted sheet plastic as a result of the in-house answer could not meet rigorous high quality control 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 present noticed a working demonstration of precision gear metering pumps made by Zenith and asked application experts if the pumps may be a fit with their utility. After collecting information on the appliance, an area supervisor for the pump manufacturer with extensive experience in dosing and mixing methods visited the plant to get a firsthand view of present operations and collect further information.
Working with the pump manufacturer’s design group they developed a system solution using a Zenith B-9000 Series rotary optimistic displacement pump specifically designed for single stream chemical duty functions. The pump features an accurate, repeatable, pulse free circulate in a compact design perfect for dosing components corresponding to colours, flavors, and fragrances.
This sort of pump is outlined as rotary as a end result of the drive shaft is rotated as in comparison with different kinds of pumps using a reciprocating movement and can additionally be thought of to be a positive displacement kind as a end result of the displaced quantity is constant and does not differ.
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 side of the pump. The flow price can only be adjusted by growing or reducing the speed at which the shaft is rotated. The pump selected provides precision grinding and lapping processes that result in a precision metering instrument, producing precise, pulse-less, and repeatable fluid flow.
The pumps provide extremely tight working clearances to attenuate fluid slip. Manufacturing tolerances on many parts are to +/- 50 millionths of inch with floor finishes as clean as four micro inches or better. The pumps are supplied with an AC “closed loop” motor velocity controller to hold up zero.1 p.c pump pace accuracy.
The Zenith 9000 collection pump is available in 11 sizes with capacities ranging from .003 to 300 GPH. Wetted parts can be found in through hardened 440C collection stainless-steel, specialty treated 316 stainless-steel, and top quality device steels similar to D2, M2, M4 and CPM-M4 to provide good corrosion and abrasion resistance.
pressure gauge 2.5 นิ้ว chosen a model with a magnetic drive (mag-drive) sealing possibility, which can remove shaft leakage of fluids, rising plant safety and reducing risky organic compound emissions. The use of a magnetic coupling additionally eliminates downtime as a end result of mechanical seal failures and eliminates the need for buffer fluids.
New solution reduces costs and presents uniform perfume distribution
The new Zenith pump system gave the scented bag producer a steady, pulse free process, which ensures equal and uniform fragrance distribution. By including the scent on to the bags after leaving the extruder, the plastic bag manufacturer not solely eradicated the need to have separate pellet silos for every scent, but also eliminated the need 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 methods. Over the past two years they have bought more than 30 techniques, with plans to order extra. The manufacturer can be thinking about having Zenith conduct annual subject calibrations of every system.
After two years of operation, the producer estimates a yearly financial savings of approximately $480,000 per skid in operation. With 30 skids now operating, the return on investment for every system buy can be measured in weeks. To date, there have been no odor complaints since the buyer put in the Zenith systems
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