The new Conair HRG Series vacuum pump has a multi-stage regenerative impeller design for conveying plastic pellets over long distances while keeping noise in a comfortable range that doesn’t require hearing protection.
With the three-stage pump, the vacuum becomes deeper and more powerful at each stage, allowing the pumps to move material up to 1,000 lineal feet.
“Until now, processors have had to accept various trade-offs when selecting a central vacuum pump,” Rich Shaffer, vice president of product development, said in a news release.
For example, Shaffer said single-stage regenerative pumps are quiet and inexpensive but limited to short- and middle-distance conveying applications. Positive displacement pumps are powerful and reliable but the low-cost versions don’t handle long distances and are noisy, he added. And, long-distance pumps (LDPs) can convey pellets at high rates with low noise levels, but can be quite expensive.
“Conair’s new hybrid regenerative pumps offers many of the best features of previous designs at a price that is about 30 percent lower than a comparable LDP unit,” Shaffer said.
The three-stage pump also compresses air with minimal draft or vibration, Conair says. A variable-speed option is available. The HRG pumps can be equipped with a variable-speed motor and used with Conair’s patented wave conveying system, which previously required a more costly LDP pump.
Wave conveying uses controlled speeds of 300 to 2800 ft/min to move material in compact waves or streams as opposed to moving materials at 5000 ft/min or more, which creates dust and equipment wear.
The new HRG pumps are also virtually maintenance free. The direct-drive system eliminates drive belts that wear and require constant adjustment. Also, no lubrication is required.