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Industrial Vacuum Specifications
Separator Receivers:
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Industrial Vacuum Specifications
Separator Receivers:
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This section describes how the DuroVac "QVP Series" pulse jet filter separators work and includes an drawing of the pulse mechanism Design Details Internal Setup The DuroVac pulse jet filter separator receiver is a high vacuum dust filtration system. Its purpose is to clean an air stream of particulate before it enters a vacuum producer. The filters inside a "pulse jet" style filter are periodically cleaned with a high pressure, shock-type pulse of compressed air. The filter receiver is comprised of three major sections: a cyclonic separation section below the tangential inlet; the filter media section; and the clean air plenum with its associated filter cleaning hardware. The cyclonic separation chamber is designed to "spin out" about 95% of all material. This section may be used to store collected material, but most units feature some type of continuous discharge device. The cyclonic separation chamber experiences most of the physical wear and tear due to abrasion. The filter media section is designed to actively filter the remaining fine particulate in the air stream. This filter receiver features a number of synthetic cloth filters (bags) supported by rigid steel cages. The filter bags and cages are accessed from large side access doors and are securely clamped in place with Breeze clamps. The filters require periodic change out because the cleaning process, by necessity, distresses the filter media. The clean air plenum provides support for the filter bag assembly as well as providing the pulse jet cleaning mechanics. The filter bags and cages are positioned in a series of rows, with each row being located directly below a steel "blow tube". This blow tube supplies and directs the high pressure pulse air into each filter bag and cage assembly along its length. A diaphragm valve is fitted to the end of each blow tube, so that typically there is a series of these valves visible externally, and each in turn is connected to an air accumulator. Each diaphragm valve is independently actuated by an associated pilot solenoid; there is, therefore, one pilot solenoid per diaphragm valve. The solenoids are mounted in a separate enclosure usually mounted on the air accumulator. The pilot solenoid directs 90-110 PSI air to the back of the diaphragm valve mounted on the blow tube. When the pilot solenoid is opened, the air pressure to the back of the diaphragm valve is relieved. Compressed air from the accumulator is thus allowed to rush into the blow tube and into the row of filters. The length of time the solenoid and diaphragm valve is open is generally only 0.15 to 0.25 seconds - thus the term "pulse". The rows of filters are cleaned sequentially, with a settable time interval between each pulse. The sequential timer can be set so that the complete set of filters is cleaned every few minutes, or it can be set to clean them up to every few hours, depending on the dust load. A solid-state timer controls the valve sequencing fully automatically. This control timer is located either locally in a separate electrical panel, or it may be incorporated in the main system control panel. Internal Diagram Pulse Jet Mechanism
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Industrial Vacuums Home Page  DuroVac Industrial Vacuums 15 Iris Crescent, Brampton, ONTARIO L6Z 3H8 1- 888- 330- 3365 PHONE: 905-624-4003 FAX: 905-624-4641
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