An Introduction to Pneumatic Conveying

When walking through the grocery store and picking up a bag of flour or sugar, you’ve probably never thought about the process that it took to get these items packaged. The small particle size of these materials requires specialized handling to ensure there is minimal damage or loss, which is called pneumatic conveying.

A pneumatic conveying system works by moving the material through an enclosed conveyor line using a combination of pressure differential and the flow of air (or another gas) from a blower or fan. Pneumatic conveying systems can be used to transport cement, starch, sugar, salt, polymers, plastic powder, and other powdered/granular bulk materials. The two most common forms of pneumatic conveying systems are dilute phase and dense phase.
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Manufacturing an Economic Dust Filtration System

Solenoid Valve Enclosure with Timer, Series SVT

Many customers have come to the Dwyer team asking: “What can Dwyer do to help with lean manufacturing?In this article, we will discuss the Dwyer® Series SVT solenoid valve and timer enclosure and its cost savings advantages in a dust filtration system.

The Series SVT combines two integral components in a dust filtration system into one package: solenoid valves and a timer controller. In a dust filtration system, solenoid valves are used to send air through a pulse valve, such as our Series RDCS.  Pulse valves release a quick spurt of air into a dirty dust cartridge filter, which, in turn, releases the dust from the filter. The timer portion of the dust filtration system is the brains of the operation controlling when the solenoids fire, the amount of time the solenoids are open, and when the next solenoid in the sequence fires. Continue reading “Manufacturing an Economic Dust Filtration System”

Downdraft Table Applications

Downdraft Table Application

There are many manufacturing processes that require human operators to perform tasks, which can create hazardous levels of particulate, fumes, gases, vapors, and mists. A few of these processes include: welding, sanding, grinding, brazing, laser cutting, tempering, and quenching. The Occupational Safety and Health Administration (OSHA) has regulatory requirements to reduce worker’s exposure to these hazards, which can cause respiratory and other health issues. Downdraft tables are workstations designed to better protect the operators who perform these tasks, in a bench top setting, by removing the hazardous material that laden the air from the worker’s breathing zone. Continue reading “Downdraft Table Applications”

Level Detection of Powder & Bulk Solids

Level detection applications are one of the most interesting things we do at Dwyer as there are so many types of switch technologies. Even just for powder and bulk level detection, there are many ways to sense the level. Dwyer offers several different technologies for powder and bulk solids point level detection. These include: diaphragmpaddletiltcapacitive, and vibration. So if you’re wondering how to determine which technology is best for your application, here is a simple guide to help you select the proper technology. Continue reading “Level Detection of Powder & Bulk Solids”