เกจ์วัดแรงดันลม on investment may be measured in days
By Mike Libbey, Area Sales Manager CIRCOR and Bob Limper, Business Development Manager CIRCOR
A global manufacturer of scented plastic garbage bags was looking for an different to 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 on the low circulate rates required, whereas also reducing their costs and bettering worker well being. Yearly financial savings are so excessive that the return on investment for the pump system can be measured in days.
Seeking an alternate for expensive pre-scented plastic pellets
A world producer of scented plastic garbage bags was on the lookout for an alternative 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 both tanker vans or rail vehicles and the producer was experiencing logistical issues associated with preserving the silos crammed. They additionally needed to carry high prices for sustaining the inventory of the pre-scented pellets.
In addition, the heavily concentrated scents had been inflicting well being considerations 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 firm was in search of a means to make use of plain plastic pellets and apply scented oil on to the plastic sheet instantly after the extrusion process to reduce costs, logistical challenges, and vitality use. They had tried to build such a system in-house but had struggled to realize accuracy and consistency on the low move rates they required. They decided to seek a pump-based solution that would immediately spray perfume on the good and cozy melted sheet plastic as a end result of the in-house solution could not meet rigorous high quality management requirements requiring the spray-on scent to exactly 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 requested application experts if the pumps could be a match with their software. After amassing data on the applying, an area supervisor for the pump producer with extensive expertise in dosing and blending techniques visited the plant to get a firsthand view of present operations and collect further info.
Working with the pump manufacturer’s design group they developed a system solution utilizing a Zenith B-9000 Series rotary optimistic displacement pump particularly designed for single stream chemical responsibility applications. The pump options an accurate, repeatable, pulse free flow in a compact design perfect for dosing additives similar to colors, flavors, and fragrances.
This kind of pump is outlined as rotary as a end result of the drive shaft is rotated as compared to other forms of pumps utilizing a reciprocating movement and is also considered to be a optimistic displacement kind as a result of the displaced quantity is constant and does not vary.
Pumping motion is achieved by filling the gear teeth 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 facet of the pump. The flow fee can solely be adjusted by rising or reducing the velocity at which the shaft is rotated. The pump selected provides precision grinding and lapping processes that end in a precision metering instrument, producing exact, pulse-less, and repeatable fluid move.
The pumps provide extremely tight working clearances to reduce fluid slip. Manufacturing tolerances on many components are to +/- 50 millionths of inch with surface finishes as smooth as 4 micro inches or higher. The pumps are provided with an AC “closed loop” motor pace controller to take care of 0.1 p.c pump speed accuracy.
The Zenith 9000 sequence pump is available in eleven sizes with capacities ranging from .003 to 300 GPH. Wetted parts are available in through hardened 440C series chrome steel, specialty handled 316 stainless steel, and top quality software steels corresponding to D2, M2, M4 and CPM-M4 to provide good corrosion and abrasion resistance.
The bag producer chosen a model with a magnetic drive (mag-drive) sealing choice, which may get rid of shaft leakage of fluids, increasing plant security and reducing unstable organic compound emissions. The use of a magnetic coupling additionally eliminates downtime because of mechanical seal failures and eliminates the necessity for buffer fluids.
New answer reduces prices and offers uniform perfume distribution
The new Zenith pump system gave the scented bag producer a steady, pulse free process, which guarantees equal and uniform perfume distribution. By adding the scent on to the luggage after leaving the extruder, the plastic bag manufacturer not only eliminated the necessity to have separate pellet silos for each scent, but additionally eradicated the necessity to vent the fumes that come from the pellets as they journey from the silos to the extruders.
The producer bought the primary system and after profitable trials, ordered six additional techniques. Over the previous two years they’ve bought more than 30 methods, with plans to order extra. The manufacturer can be interested in having Zenith conduct annual field calibrations of each system.
After เกจ์วัดแรงดัน 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 funding for each system purchase may be measured in weeks. To date, there have been no odor complaints for the reason that customer put in the Zenith techniques
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