Patent US5753551A successfully refreshed from Google Patents.
Patent EP0168538A1 successfully refreshed from Google Patents.
EP0168538A1
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EP
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Clarifier
Assignee: Blue Circle Industries PLC
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Filing: 1984-11-30
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Granted: —
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Expires: 2004-11-30
Abstract
Abstract A clarifier for removing particulate matter from a liquid comprises a chamber (1) defined by a cylindrical wall (2) having a top-plate (8) and a funnel-shaped floor (3), the latter terminating in a cylindrical receptacle (5) equipped with an outlet pipe (7). The liquid to be clarified is introduced into the chamber through an inlet (34) arranged to direct the liquid into an annular space formed between the chamber wall and a flow pattern-controlling device, typically in the form of a hollow, truncated cone (21). The flow pattern may be modified by a further hollow truncated cone (25). Clarified liquid passing up through the truncated cones is discharged through the aperture defined by a cylindrical member (9) set in the top-plate, the liquid passing into a trough (11) and thence to a collection box 13 for discharge through a pipe (14). Scum and other floatable solids are collected in a box 18 for discharge through a pipe (20). A floc blanket may be established within the chamber as an aid to clarification. A flocculating agent may be introduced into the chamber along with the liquid.
Inventors
- 👤 David Ernest Smith
- 👤 George Ronald Earp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:31
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/10; B01D21/0039; B01D21/0042; B01D21/01; B01D21/24; B01D21/2405; B01D21/2411; B01D21/2427; B01D21/2433; B01D21/26
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
118 words
A clarifier comprising a chamber having an inlet, a first outlet and a second outlet that is spaced from the first outlet in the general direction of the central axis of the chamber, a flow pattern-controlling device being provided within the chamber, characterised in that the said flow pattern-controlling device has a passage therethrough that is substantially aligned with the central axis of the chamber, the flow pattern-controlling device further having an outer surface that defines, together with part of the wall of the chamber, an annular space communicating both with the said passage through the flow pattern-controlling device and with the first outlet, the said inlet being arranged to direct influent material into the said annular space.
Claim 2
Dependent Claim
118 words
A clarifier comprising a chamber having an inlet, a first outlet and a second outlet that is spaced from the first outlet in the general direction of the central axis of the chamber, a flow pattern-controlling device being provided within the chamber, characterised in that the said flow pattern-controlling device has a passage therethrough that is substantially aligned with the central axis of the chamber, the flow pattern-controlling device further having an outer surface that defines, together with part of the wall of the chamber, an annular space communicating both with the said passage through the flow pattern-controlling device and with the first outlet, the said inlet being arranged to direct influent material into the said annular space.
Claim 3
Dependent Claim
42 words
A clarifier according to claim 1, characterised in that the radial distance between the said outer surface of the said flow pattern-controlling device and the said part of the wall of the chamber increases in the direction toward the said first outlet.
Claim 4
Dependent Claim
44 words
A clarifier according to claim 1, characterised in that the radial distance between the said outer surface of the said flow pattern-controlling device and the said part of the wall of the chamber remains substantially constant in the direction toward the said first outlet.
Claim 5
Dependent Claim
26 words
A clarifier according to claim 1, 2 or 3, characterised in that the said flow pattern-controlling device is in the form of a hollow, truncated cone.
Claim 6
Dependent Claim
26 words
A clarifier according to claim 1, 2 or 3, characterised in that the said flow pattern-controlling device is in the form of a hollow, right cylinder.
Claim 7
Dependent Claim
35 words
A clarifier according to any one of claims 1 to 5, characterised in that a flow pattern-modifying device is provided, at least part of which is within the said passage through the flow pattern-controlling device.
Claim 8
Dependent Claim
28 words
A clarifier according to claim 6, characterised in that the said flow pattern-modifying device projects beyond the said passage in the axial direction towards the said first outlet.
Claim 9
Dependent Claim
35 words
A clarifier according to claim 6 or 7, characterised in that the said flow pattern-modifying device is in the form of a hollow, truncated cone tapering in the axial direction towards the said first outlet.
Claim 10
Dependent Claim
42 words
A clarifier according to any one of claims 1 to 5, characterised in that the said flow pattern-controlling device is provided with an extension in the form of a hollow truncated cone tapering in the axial direction towards the said first outlet.
Claim 11
Dependent Claim
29 words
A clarifier according to any one of claims 1 to 9, characterised in that a plurality of inlets are arranged to direct influent material into the said annular space.
Claim 12
Dependent Claim
30 words
A clarifier according to any one of claims 1 to 10, characterised in that the or each said inlet is arranged to direct influent material substantially tangentially into the chamber.
Claim 13
Dependent Claim
39 words
A clarifier according to any one of claims 1 to 11, characterised in that the or each said inlet is located in that part of the chamber wall that defines, with the flow pattern-controlling device, the said annular space.
Claim 14
Dependent Claim
35 words
A clarifier according to any one of claims 1 to 12, characterised in that one end of the chamber is substantially funnel-shaped and terminates in a receptacle in which the said first outlet is located.
Claim 15
Dependent Claim
36 words
A clarifier according to any one of claims 1 to 13, characterised in that the chamber is arranged with its central axis substantially vertical, the said first outlet being situated lower than the said second outlet.
Claim 16
Dependent Claim
34 words
A clarifier according to claim 14, characterised in that the first outlet is situated at the bottom end of the chamber and the second outlet is situated at the upper end of the chamber.
Claim 17
Dependent Claim
63 words
A clarifier according to claim 15, characterised in that the upper end of the chamber comprises a sloping plate having a vertical cylinder therein defining an outlet aperture, a trough being provided for the reception of liquid that may flow over the upper rim of said cylinder, the under-surface of the plate leading, at its uppermost end, to an outlet for floatable solids.
Claim 18
Dependent Claim
25 words
A clarifier substantially as hereinbefore described and as illustrated in Figures 1 to 5 or in Figure 6, 7 or 8 of the accompanying drawings.
Claim 19
Dependent Claim
25 words
A clarifier substantially as hereinbefore described and as illustrated in Figures 1 to 5 or in Figure 6, 7 or 8 of the accompanying drawings.
Claim 20
Dependent Claim
70 words
A process for the clarification of a liquid by the removal of solid particulate matter, characterised in that the removal is effected by passing a continuous stream of the liquid into a clarifier according to any one of claims 1 to 17 through the inlet thereof, particulate matter being discharged from the clarifier at the said first outlet thereof and the clarified liquid being discharged at the said second outlet.
Claim 21
Dependent Claim
24 words
A process according to claim 18, characterised in that conditions are established within the clarifier for the formation and maintenance of a floc blanket.
Claim 22
Dependent Claim
25 words
A process according to claim 19, characterised in that the floc blanket is formed and maintained within the said passage of the flow pattern-controlling device.
Claim 23
Dependent Claim
22 words
A process according to claim 18, 19 or 20, characterised in that at least one flocculant is continuously introduced into the clarifier.
Claim 24
Dependent Claim
21 words
A clarified liquid or solid particulate matter whenever obtained by a process according to any one of claims 18 to 21.
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