Cleaning valve with dampening mechanism
First Claim
Patent Images
1. A valve device for pulsed compressed air cleaning of a filter unit comprising:
- a housing comprising a housing top, housing sides, and an interior area, the housing arranged in an opening of a pressure vessel containing compressed air;
the housing top comprising a top opening with a sealing seat;
a plunge comprising a top, elongated sides extending from the top parallel with and slidably abutting the housing sides, the elongated sides having free ends opposite the top for pulse pipe contact, and a plug portion extending from a center of the top sized to fit within the top opening to abut the sealing seat, the plunge slidably positioned within the interior area of the housing;
a plurality of openings through the housing sides for the flow of compressed air from the pressure vessel through the housing to the pulse pipe useful for cleaning at least a portion of the filter unit when the plunge is in a first position with the plug portion arranged within the top opening of the housing;
a fluid supply on the housing for supply of a fluid to an interior area within the housing to cause movement of the plunge to a second position with the plug portion arranged out of the top opening of the housing for blocking by plunge sides of the plurality of openings through the housing sides and blocking the flow of compressed air from the pressure vessel through the plurality of openings to the pulse pipe; and
a dampening mechanism to cushion impact of the plunge with the housing upon plunge movement into the first position.
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Accused Products
Abstract
Pulse valves and methods of using pulse valves are provided. The pulse valves include a dampening mechanism to decrease mechanical stresses, decrease operating noise, decrease compressed air waste and increase operational life expectancy. Such dampening mechanism is arranged within an internal area of the pulse valve housing. Additionally, fluid within the internal area of the pulse valve provides cushioning effects during operation of the pulse valve.
27 Citations
10 Claims
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1. A valve device for pulsed compressed air cleaning of a filter unit comprising:
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a housing comprising a housing top, housing sides, and an interior area, the housing arranged in an opening of a pressure vessel containing compressed air; the housing top comprising a top opening with a sealing seat; a plunge comprising a top, elongated sides extending from the top parallel with and slidably abutting the housing sides, the elongated sides having free ends opposite the top for pulse pipe contact, and a plug portion extending from a center of the top sized to fit within the top opening to abut the sealing seat, the plunge slidably positioned within the interior area of the housing; a plurality of openings through the housing sides for the flow of compressed air from the pressure vessel through the housing to the pulse pipe useful for cleaning at least a portion of the filter unit when the plunge is in a first position with the plug portion arranged within the top opening of the housing; a fluid supply on the housing for supply of a fluid to an interior area within the housing to cause movement of the plunge to a second position with the plug portion arranged out of the top opening of the housing for blocking by plunge sides of the plurality of openings through the housing sides and blocking the flow of compressed air from the pressure vessel through the plurality of openings to the pulse pipe; and a dampening mechanism to cushion impact of the plunge with the housing upon plunge movement into the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification