What is the best vacuum pump?
Depending on the chosen pneumatic conveying phase, Apply suggests the best type of pump. For the dense phase, dry vane pumps or rotary claw pumps are often used. Both achieve high vacuums up to 90% with air volumes from 25 to 200 m3/h. The claw pumps do not have vanes on the impeller but two shafts where two bodies rotate, called hooks because of their shape, which compress the air without touching each other. This technological difference leads to higher costs for claw pumps, but is compensated by lower maintenance and better performance stability over time.
When a pump has graphite vanes, which rotate in contact with the chamber, graphite powder is released. As it wears away, it loses efficiency and requires more maintenance. So why use graphite? Because its powder has an essential lubricating function, that in other types of pumps is performed by oil rings. In the latter case, the vanes can be made of bakelite or stainless steel. Note that oil ring also provides vacuum seal.
Which pump should be used for the fluidized phase?
Vacuum generators are needed to guarantee a large amount of air in relation to the vacuum obtained. This is why side channel, single or dual stage blowers are almost always used. To make a comparison also in terms of energy, a blower with 3 kW power generates more or less 300 m3/h and a 20%vacuum, a vacuum pump of the same power runs on 80 m3/h with 80/90% of vacuum.
A last economic comparison concerns filters: with less air or gas flow, filters with smaller cross-sections can be installed: they cost less and also clean more quickly.
A wide range of pumps
Pneumatic conveying can be useful in so many industrial applications, in both large and small companies; a good investment to gain a competitive advantage over competitors and to optimize production. Such a wide variety of fields of use is reflected in a considerable range of available pumps, allowing to always find the optimal solution related to what you want to achieve.
Apply is a strong point of reference in the field of pump sales, thanks to our technological expertise, in-depth knowledge of the pumps available on the market and constant side-by-side work with our customers. When buying pumps for specific applications, requirements can vary considerably. The main factor may be energy saving, small footprint, dry pump, low cost or low noise. In all cases we offer a wide range of technologies to choose from. Whatever pump you need, we guarantee its safety, robustness and reliability.
Apply can provide you with maximum support at every stage of the pump life cycle. Our engineers can study your requirements and advise you on the types of pumps that will meet your needs. Our sales staff will be on hand to make a cost-effective and competitive offer, taking into account individual cases.
On request, our technicians will arrange for the pump to be assembled on site, to be integrated with other machines, whether for pneumatic transport or not, and also for various function tests. For a truly all-round service that frees you from any worry, our company is also prepared to offer you a comprehensive after-sales service. We are able to take care of all the necessary maintenance, scheduled and unscheduled, both on pumps sold by us and on those sold by third parties.
Apply’s mobile workshops guarantee a rapid response, nationwide and for any problem that may arise. We also offer our customers a pump rental service, which is useful, for example, for temporary increases in production, to quickly solve serious breakdowns in your pumps or for those who do not wish to invest in purchase.