Patent US1563918A successfully refreshed from Google Patents.
EP0138475A2
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Improvements in and relating to reject handling in cyclones and other separator devices
Assignee: Beloit Corp
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Filing: 1984-09-28
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Granted: —
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Expires: 2004-09-28
Abstract
Abstract A method and apparatus for increasing the yield in the separating of heavy or light contamination from a liquid. The liquid is separated into accepts and rejects and the rejects outlet (8, 37) from the separator (1) opens into a rejects chamber (7) which forms part of a rejects loop. The loop includes valves (11, 12, 20) and a pump (15) which enable the pressure in the rejects chamber to be controlled so that there is substantially no flow of accepts from the separator to the rejects chamber, whilst the contaminant rejects are allowed to pass from the separator to the rejects chamber. The reject loop preferably includes an auxiliary separator (16) for removing contaminants from the loop.
Inventors
- 👤 Graham Blakeley Chivrall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
B; B03; B03B; B03B11/00; B04; B04C; B04C11/00; B04C5/00; B04C5/14; B04C5/18; B04C9/00; D; D21; D21D; D21D5/00; D21D5/18; D21D5/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
A method of separating a liquid into accepts and rejects utilising a separator (1) having an outlet (8,37) for the rejects, which outlet opens into a rejects chamber (7,41), the method comprising feeding the liquid to be subject to the separation into the separator and characterised by passing a further liquid through the rejects chamber (7,41) to carry away rejects passing through the rejects outlet (8,37) from the separator, and controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst albwing the passage of rejects therethrough.
Claim 2
Independent Claim
108 words
A method of separating a liquid into accepts and rejects utilising a separator (1) having an outlet (8,37) for the rejects, which outlet opens into a rejects chamber (7,41), the method comprising feeding the liquid to be subject to the separation into the separator and characterised by passing a further liquid through the rejects chamber (7,41) to carry away rejects passing through the rejects outlet (8,37) from the separator, and controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst albwing the passage of rejects therethrough.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1 comprising controlling the pressure of the liquid flowing through the rejects chamber to prevent the flow of accepts through the rejects outlet.
Claim 4
Dependent Claim
28 words
A method as claimed in claim 1 comprising controlling the flow of liquid flowing through the rejects chamber to prevent the flow of accepts through the rejects outlet.
Claim 5
Independent Claim
53 words
A method as claimed in any of claims 1, 2 or 3 in which the rejects chamber (7,41) forms part of a rejects loop and comprising circulating the further liquid around the loop by means of a pump (15) and controlling the pressure and/or flow by means of valves (11,12,20) in the loop.
Claim 6
Independent Claim
35 words
A method according to any of claims 1 to 4 when employed to remove "heavy" contamination from a fibre and liquid slurry in which the "heavy" particles fall through the opening into the rejects chamber.
Claim 7
Dependent Claim
95 words
Apparatus for controlling the passage of liquid through a rejects outlet (8,37) of a separator for separating a liquid into accepts and rejects, the rejects outlet opening into a rejects chamber (7,41), and characterised by means for passing a further liquid through the rejects chamber to carry away the rejects passing through the rejects outlet, and means controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst allowing the passage of rejects therethrough.
Claim 8
Dependent Claim
95 words
Apparatus for controlling the passage of liquid through a rejects outlet (8,37) of a separator for separating a liquid into accepts and rejects, the rejects outlet opening into a rejects chamber (7,41), and characterised by means for passing a further liquid through the rejects chamber to carry away the rejects passing through the rejects outlet, and means controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst allowing the passage of rejects therethrough.
Claim 9
Dependent Claim
134 words
Apparatus for separating a liquid into accepts and rejects comprising a separator device (1) having an inlet for the liquid which is to be subject to the separation, means producing a flow through the device with the rejects migrating to at least one outlet (8,37), and the accepts being recovered at another outlet, the at least one outlet (8,37) for the rejects opening into a or a respective rejects passage or chamber and characterised by means passing a further liquid through the rejects chamber to carry away the rejects passing through the rejects outlet, and means controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst allowing the passage of rejects therethrough.
Claim 10
Dependent Claim
134 words
Apparatus for separating a liquid into accepts and rejects comprising a separator device (1) having an inlet for the liquid which is to be subject to the separation, means producing a flow through the device with the rejects migrating to at least one outlet (8,37), and the accepts being recovered at another outlet, the at least one outlet (8,37) for the rejects opening into a or a respective rejects passage or chamber and characterised by means passing a further liquid through the rejects chamber to carry away the rejects passing through the rejects outlet, and means controlling the liquid passing through the rejects chamber to thereby control the flow of liquid through the rejects outlet so as to prevent or substantially prevent the passage of accepts therethrough whilst allowing the passage of rejects therethrough.
Claim 11
Dependent Claim
30 words
Apparatus as claimed in claims 6 or 7 in which the rejects passage or chamber (7,41) is part of a rejects loop which comprises valves (11,12,20) and a pump (15).
Claim 12
Dependent Claim
21 words
Apparatus as claimed in claim 8 in which the reject loop further comprises an auxiliary separator (16,16',16") for removing contaminants therefrom.
Claim 13
Dependent Claim
27 words
Apparatus as claimed in any of claims 6 to 9 in which the rejects outlet is an outlet (8) for "heavies" or an outlet (41) for "lights".
Claim 14
Dependent Claim
43 words
Apparatus as claimed in any of claims 8, 9 or 10 in which the rejects chamber (7) is cylindrical with its axis co-axial with the rejects outlet, and the inlet (10) and outlet (11) of the loop intersect the rejects chamber (7) tangentially.
Claim 15
Dependent Claim
44 words
Apparatus as claimed in any of claims 8,9 or 10 in which the rejects chamber (7) is formed by a cylindrical passage having the loop inlet (10) and the loop outlet (9) co-oaxial therewith, and the rejects outlet (8) disposed at right angles thereto.
References Cited (Backward Citations)
No citation records indexed.
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