GB2122923A - Apparatus for the removal and collection of solids in a gas flow - Google Patents

Apparatus for the removal and collection of solids in a gas flow Download PDF

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Publication number
GB2122923A
GB2122923A GB08218340A GB8218340A GB2122923A GB 2122923 A GB2122923 A GB 2122923A GB 08218340 A GB08218340 A GB 08218340A GB 8218340 A GB8218340 A GB 8218340A GB 2122923 A GB2122923 A GB 2122923A
Authority
GB
United Kingdom
Prior art keywords
cyclone
flow
jet pump
container
solids
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08218340A
Other versions
GB2122923B (en
Inventor
Frederick Gerrard
Peter Hyman
David John Riding
Charles Kenneth Stanley Wilmot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB08218340A priority Critical patent/GB2122923B/en
Publication of GB2122923A publication Critical patent/GB2122923A/en
Application granted granted Critical
Publication of GB2122923B publication Critical patent/GB2122923B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/185—Dust collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/002—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/005—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external rotors, e.g. impeller, ventilator, fan, blower, pump

Abstract

A cyclone (9) having a tangential inlet (13) is releasably coupled at its reduced diameter end to a dust container (4). The opposite end of the cyclone is connected via a U-tube 16 to a jet pump (8). Operation of the jet pump induces an inward flow at the tangential inlet to the cyclone. This flow spirals down the cyclone to deposit any solids carried by the flow in the dust container. A return flow from the container passes along the cyclone in the reverse direction to merge with the motive flow at the jet pump. A filter (31) can be provided at the outlet from the jet pump. <IMAGE>

Description

SPECIFICATION Apparatus for the removal and collection of solids in a gas flow The present invention concerns an apparatus for the removal and collection of solids in a gas flow.
According to one aspect of the present invention an apparatus for the removal and collection of solids in a gas flow comprises, in combination, a cyclone and a jet pump, the jet pump being operable to induce an inlet flow into the cyclone and the cyclone delivering the flow to a container to receive and collect solids in the flow.
According to another aspect of the present invention an apparatus for the removal and collection of solids in a gas flow comprises a cyclone having an inlet for the gas flow, a container at the discharge end of the cyclone, a duct leading from the opposite end of the cyclone to a jet pump operable to induce an inward flow at the inlet to the cyclone whereby the flow spirals through the cyclone to deposit solids in the flow in the container and a return flow from the container passes along the cyclone in the opposite direction to the spiralling flow to merge with a motive flow at the jet pump.
A filter can be provided at the outlet from the jet pump to capture any fine solid particles which might be carried over from the container in the return flow through the cyclone.
The invention will be described further, by way of example, with reference to the accompanying drawings; in which.~ Figure 1 is a part sectional elevation of an embodiment of the invention; and Figure 2 is a diagram not to scale of a portion of the embodiment of Figure 1.
A base plate 1 carries an upstanding support column 2, the column being positioned off-centre on the base plate. A cup 3 is fixedly secured to the base plate to receive a dust container 4, the cup 3 having opposed L-shaped slots 5 cooperable with lugs 6 on the container to constitute a releasable bayonet connection.
An elongate sleeve 7 on the column 2 carries an assembly comprising a jet pump 8 and a cyclone 9. The jet pump 8 comprises a nozzle 10 axially aligned with a mixer tube 11 whereby a stream of pressure fluid, generally compressed air, issuing from the nozzle passes along the mixer tube. The mixer tube has an initial converging section followed by a length of substantially constant cross-section. Preferably, and as shown, the mixer tube terminates in a diverging section which constitutes a diffuser 12.
An inlet duct 13 leads tangentially into a cylindrical portion of the cyclone and a frustoconical portion of the cyclone terminates at, and communicates with, the dust container 4. A duct 14 at the end of the cyclone opposite the dust container extends into the cylindrical portion such that the tangential inlet duct opens into an annular region 15 formed by the length of the duct within the cylindrical portion. The end of the duct 1 5 outside the cyclone is joined by a U-tube 16 to the mixer tube 1 1 of the jet pump, the nozzle 10 extending through the wall of the U-tube.
To insert and remove the dust container 4 into and out of the cup 3 it is necessary to axially displace the cyclone away from the cup. This is achieved by an eccentric comprising a cam 17 rotatably mounted on a bracket 18 which is carried by a support plate 19 fixedly secured to the column 2. The cam is arranged within a yoke 20 mounted on an end of a stem 21 which is pivotable about an axis 22 on a further bracket 23 carried by the support plate. The opposite end of the stem is bifurcated and has slots 24 to engage lugs 25 on an adaptor 26 slidable on the support column 2. The adaptor in turn is releasably connected to the sleeve 7 by pins 27 engageable in a circumferential groove in the adaptor and rotation of the cam about its first axis by an operating lever 28 causes the yoke to rock about its axis 22 to axially displace the sleeve.Each pin 27 can have a flat along a part of its length such that, when partially withdrawn, the pin clears the groove in the adaptor to free the sleeve for removal of the cyclone and the jet pump as a unit in the event of damage. In Figure 2, the eccentric is shown in position to hold the cyclone against the end of the dust container with the operating lever 28 abutting against a stop 29 on the support plate. Upon axially displacing the sleeve to move the cyclone away from the end of the dust container, the sleeve can be rotated on the column to swivel the cyclone clear of the dust container.
Means are provided to prevent rotation of the assembly comprising the jet pump and the cyclone when the assembly is in its operative position with the reduced diameter end of the cyclone engaging the dust container. Such means can comprise a key at the end of the sleeve 7 remote from the adaptor 26 which engages a corresponding keyway formed in the free end of the column 2 when the assembly is in its operative position.
A sealing gasket 30, for example a foam rubber material, is arranged between the end of the cyclone and the dust container. The dust container is urged in a direction towards the cyclone by a compression spring within the cup and located in a recess in the base plate.
An extension conduit or hose can be releasably coupled to the end of the tangential inlet duct 13, conveniently by a bayonet connection. A filter 31 can be releasably fitted to the outlet from the diffuser section 12 of the mixer tube. A shackle 32 can be provided on the U-tube whereby the apparatus can, if required. be suspended from a hoist or the like.
In use, a supply of compressed gas issuing from the nozzle passes into the mixer tube and this induces an inward flow along the tangential inlet duct into the annular region of the cyclone. At its opposite end the inlet duct is open to the atmosphere or environment to be cleaned and solids in this atmosphere or environment are drawn into the cyclone with the inward flow along duct 13. This flow spirals down the cyclone to the dust container to deposit the solids in the flow in the container. A return flow from the container passes centrally in the reverse direction along the cyclone and into the U-tube to mix with the compressed air flow issuing from the nozzle 10.
The flow then passes through the mixer tube and is exhausted to the atmosphere or environment about the apparatus.
Alternatively, filter 31 can be fitted to the mixer tube to capture any fine particles which might be carried in the return flow from the dust container.
The apparatus is constructed to occupy as small a volume as possible whereby to facilitate its use in radioactive enclosures to which access is obtained through restricted entries. The releasable bayonet connections can be operated by remote control manipulators from outside the enclosure and the dust container can be provided with a manipulator aid on its outer surface.

Claims (7)

1. An apparatus for the removal and collection of solids in a gas flow comprising, in combination, a cyclone and a jet pump, the jet pump being .- operable to induce an inlet flow into the cyclone and the cyclone delivering the flow to a container to receive and collect solids in the flow.
2. An apparatus for the removal and collection of solids in a gas flow comprising a cyclone having an inlet for the gas flow, a container at the discharge end of the cyclone, a duct leading from the opposite end of the cyclone to a jet pump operable to induce an inward flow at the inlet to the cyclone whereby the flow spirals through the cyclone to deposit solids in the flow in the container and a return flow from the container passes along the cyclone in the opposite direction to the spiralling flow to merge with a motive flow at the jet pump.
3. An apparatus as claimed in claim 2 including a filter at the outlet from the jet pump.
4. An apparatus as claimed in claim 2 or 3 in which the container is releasably mounted on a base plate and the cyclone and jet pump are displaceable as a unit on a support column secured to the base plate.
5. An apparatus as claimed in claim 4 including eccentric means for axial displacement of the unit relative to the container.
6. An apparatus as claimed in claims 2 to 5 including spring means for urging the container into engagement with the discharge end of the cyclone.
7. An apparatus for the removal and collection of solids in a gas flow constructed, arranged and adapted to operate substantially as herein described with reference to and as illustrated in the accompanying drawings.
GB08218340A 1982-06-24 1982-06-24 Apparatus for the removal and collection of solids in a gas flow Expired GB2122923B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08218340A GB2122923B (en) 1982-06-24 1982-06-24 Apparatus for the removal and collection of solids in a gas flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08218340A GB2122923B (en) 1982-06-24 1982-06-24 Apparatus for the removal and collection of solids in a gas flow

Publications (2)

Publication Number Publication Date
GB2122923A true GB2122923A (en) 1984-01-25
GB2122923B GB2122923B (en) 1986-01-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08218340A Expired GB2122923B (en) 1982-06-24 1982-06-24 Apparatus for the removal and collection of solids in a gas flow

Country Status (1)

Country Link
GB (1) GB2122923B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450517A2 (en) * 1990-03-30 1991-10-09 Kabushiki Kaisha Toshiba Combustion system for suppressing emission of gases believed to cause green-house-effect
WO1993009875A1 (en) * 1991-11-11 1993-05-27 B.H.R. Group Limited Phase separation apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592818A (en) * 1945-05-25 1947-09-30 Prat Daniel Corp Dust sampler
GB738854A (en) * 1953-02-13 1955-10-19 Babcock & Wilcox Ltd Improvements in dust disposal apparatus
GB776493A (en) * 1955-05-10 1957-06-05 Paul Edward Prutzman Bracket for mounting rear view mirrors
GB872094A (en) * 1958-10-27 1961-07-05 Monsanto Chemicals Improvements in or relating to the preservation of vulcanisable synthetic rubbery polymers
GB1419474A (en) * 1973-03-20 1975-12-31 Hitachi Shipbuilding Eng Co Abrasive-cleaning machine
GB2035787A (en) * 1978-11-11 1980-06-25 L & H Designs Ltd & Merritt H Suction cleaning device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592818A (en) * 1945-05-25 1947-09-30 Prat Daniel Corp Dust sampler
GB738854A (en) * 1953-02-13 1955-10-19 Babcock & Wilcox Ltd Improvements in dust disposal apparatus
GB776493A (en) * 1955-05-10 1957-06-05 Paul Edward Prutzman Bracket for mounting rear view mirrors
GB872094A (en) * 1958-10-27 1961-07-05 Monsanto Chemicals Improvements in or relating to the preservation of vulcanisable synthetic rubbery polymers
GB1419474A (en) * 1973-03-20 1975-12-31 Hitachi Shipbuilding Eng Co Abrasive-cleaning machine
GB2035787A (en) * 1978-11-11 1980-06-25 L & H Designs Ltd & Merritt H Suction cleaning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450517A2 (en) * 1990-03-30 1991-10-09 Kabushiki Kaisha Toshiba Combustion system for suppressing emission of gases believed to cause green-house-effect
EP0450517A3 (en) * 1990-03-30 1992-03-18 Kabushiki Kaisha Toshiba Combustion system for suppressing emission of gases believed to cause green-house-effect
WO1993009875A1 (en) * 1991-11-11 1993-05-27 B.H.R. Group Limited Phase separation apparatus

Also Published As

Publication number Publication date
GB2122923B (en) 1986-01-15

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PCNP Patent ceased through non-payment of renewal fee