Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
1999-09-10
2001-06-26
Simmons, David A. (Department: 1724)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S417000, C055S420000, C055S465000, C055S467000, C055S505000, C406S168000
Reexamination Certificate
active
06251152
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a vacuum receiver that separates a granular product from an incoming air stream without the use of internal filters. More particularly, this invention relates to a vacuum receiver in a pneumatic conveying system of the type wherein a granular product is conveyed by an air stream from a material supply to a machine or like destination in a processing line where the product is to be used.
BACKGROUND OF THE INVENTION
The invention disclosed herein arose out of a need to further simplify the constructions in my earlier vacuum receiver products represented by the teachings in U.S. Pat. Nos. 4,583,885 and 5,776,217. In order to dismantle the aforesaid vacuum receivers, several complicated steps need to be taken in order to effect the removal of the components that deliver the gas entrained particulate to the interior of the vacuum receiver. During use of these vacuum receivers, time is usually of the essence and, therefore, any reduced amount of down time for servicing purposes will be appreciated by the end user.
Accordingly, it is an object of this invention to provide a vacuum receiver that separates a granular product from an incoming air stream and delivers the particulate to a vacuum receiver vessel, wherein the structure for delivering the gas entrained particulate to the vacuum receiver is configured to be in a slip-fit relation to the vacuum receiver to enable it to be simply removed from the vacuum receiver without removal of the lid covering the top of the vacuum receiver.
It is a further object of the invention to provide a vacuum receiver, as aforesaid, wherein the gas entrained particulate delivery structure includes a housing with an interior chamber that is larger in cross section than an area of a perpendicular cross section of a gas entrained particulate delivering pipe so that the deceleration of the particles prior to their entry into the vacuum receiver occurs before the particles enter the vacuum receiver.
A further object of the invention is to provide a vacuum receiver, as aforesaid, wherein the entry port into the vacuum receiver includes an elongate pipe which has a plurality of circumferentially and lengthwise spaced perforations along a length thereof to facilitate the flow of gas therethrough and to reduce the amount of gas flowing out through the outlet end of the pipe.
A further object of the invention is to provide a vacuum receiver, as aforesaid, wherein the structure that effects a deceleration of the particles is contained on a removable plate forming a wall of the interior chamber to thereby enable removal of the plate and a replacement thereof with a new one.
A further object of the invention is to provide a vacuum receiver, as aforesaid, wherein a downwardly inclined ramp surface is provided between a region adjacent a lower edge of the removable plate and an entrance from the interior chamber into the vacuum receiver so as to facilitate the movement of slowed particles from the plate to and into the entry port to the vacuum receiver.
A further object of the invention is to provide a vacuum receiver, as aforesaid, wherein the inlet pipe delivering gas entrained particulate to the interior chamber is slidingly secured in the inlet opening of the housing and is removable from the housing through an opening created when the removable plate is removed.
A further object of the invention is to provide a vacuum receiver, wherein the inlet opening to the vacuum receiver is oriented directly above the particle receiving vessel and a second opening into the particle receiving vessel and to which a suction blower is connected is oriented on an axis that is wholly outside the peripheral boundary of the particle receiving vessel, with the lid for the vacuum receiver further including structure defining a passageway extending from the particle receiving vessel to the aforesaid second opening. A reciprocal valve mechanism is mounted in the passageway with a drive motor therefor being mounted on the exterior part of the passageway to facilitate easy access thereto.
SUMMARY OF THE INVENTION
The objects and purposes of the invention are met by providing a vacuum receiver for separating particles entrained in a gas-particle stream and for allowing a gas stream to exit from the vacuum receiver to an exhaust blower while simultaneously allowing the particles to remain in a particle receiving vessel having an open top. A cover is provided which has a top wall with a perimeter thereof resting on a surface of the receiving vessel encircling the open top. The cover further includes first and second separate openings through the top wall with the second opening being configured to be connected to the aforesaid exhaust blower. An inlet housing is provided which includes a wall defining an interior chamber. The interior chamber has an inlet opening provided through the wall. A pipe is sealingly received in the inlet opening and is configured to deliver gas entrained particles to the interior chamber. An end of the pipe located inside the interior chamber has a check valve mechanism mounted thereon to limit to a single direction the flow of gas entrained particles through the pipe. A first outlet opening is provided in the housing which is axially aligned with the first opening through the top wall of the lid. An elongate pipe is provided with one end thereof being fixedly connected to the outlet opening from the housing and extending through the first opening in the lid. An opposite end of the outlet pipe terminates in the aforesaid particle receiving vessel. The inlet housing and the elongate outlet pipe are configured to be removable as a unit from and insertable as a unit into the first opening through the top wall enabled by a slip-fit relation between the inlet housing and the elongate pipe connected thereto and the first opening in the top wall so that an exhaust blower, in operation, will create a less than atmospheric pressure in the particle receiving vessel to draw either the inlet housing or the elongate outlet pipe connected thereto into a snug and sealed relation to the top wall.
The objects and purposes of this invention are further met by providing a cover on the upper end of the particle receiving vessel which has two openings therethrough, the first opening being oriented directly above the particle receiving vessel and a second opening being oriented on an axis that is wholly outside a peripheral boundary of the particle receiving vessel. The cover further includes a structure defining a passageway extending from the particle receiving vessel to the aforesaid second opening. A reciprocal valve member is mounted in the passageway and a drive motor is provided therefore which is mounted on an exterior part of the passageway to facilitate easy access thereto.
REFERENCES:
patent: 1623079 (1927-04-01), Zimmermann
patent: 4179769 (1979-12-01), Lundquist
patent: 4583885 (1986-04-01), Thiele
patent: 4726825 (1988-02-01), Notake
patent: 5340241 (1994-08-01), Thiele et al.
patent: 5490745 (1996-02-01), Thiele et al.
patent: 5622457 (1997-04-01), Thiele
patent: 5776217 (1998-07-01), Thiele
patent: 5-147734 (1993-06-01), None
C.W. Thiele Company
Flynn ,Thiel, Boutell & Tanis, P.C.
Hopkins Robert A.
Simmons David A.
LandOfFree
Vacuum receiver for separating particles in a gas flow... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum receiver for separating particles in a gas flow..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum receiver for separating particles in a gas flow... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2456446