US3552554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow stabilizing through laminar separation apparatus
Assignee: Rederi Nordstjernan AB
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Filing: 1969-09-15
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Granted: 1971-01-05
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Expires: 1989-09-15
Abstract
Abstract Apparatus for the continuous separation of material suspended in a liquid such as sewage or industrial waste of the type wherein the liquid passes down through a multiplicity of parallel, inclined units formed of parallel spaced inclined plates on which sediment deposits and then slides down as a layer with a layer of clarified liquid above it. Pockets attached to the underside of the plates receive the clarified liquid which is drawn off from them by discharge pipes at the bottom. Vertical flow stabilization plates and also horizontal grids are provided in the inlet to said units to overcome cross flows and turbulences. In the sedimentation units, flow stabilization is accomplished by parallel spaced baffle plates extending in the direction of flow, and by transverse perforated plates in each unit to provide uniform suction across each unit, and by bypassing some clarified liquid with the sediment and recirculating it.
Inventors
- 👤 Gunnar Olgard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:38
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2405; B01D21/2416; B01D21/0039; B01D21/0051; B01D21/10; B01D21/2427; B01D21/2444; B01D21/2488
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
142 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and takeoff means located adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means having a plurality of passages directing the liquid flow downwardly from said inlet part into said separation part in a multiplicity of individual passages preventing crossflow and turbulence.
Claim 2
Dependent Claim
142 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and takeoff means located adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means having a plurality of passages directing the liquid flow downwardly from said inlet part into said separation part in a multiplicity of individual passages preventing crossflow and turbulence.
Claim 3
Dependent Claim
25 words
Apparatus as claimed in claim 1 having means vertically dividing the horizontal liquid flow into and within said inlet part into a plurality of channels.
Claim 4
Dependent Claim
34 words
Apparatus as claimed in claim 1 wherein said flow stabilization means comprises honeycomb grid means having vertical passage ways to stabilize flow and prevent crossflow and turbulence of the liquid entering said separation part.
Claim 5
Dependent Claim
34 words
Apparatus as claimed in claim 2 wherein said flow stabilization means comprises honeycomb grid means having vertical passage ways, to stabilize flow and prevent crossflow and turbulence of the liquid entering said separation part.
Claim 6
Dependent Claim
42 words
Apparatus as claimed in claim 2 having means in each unit of the separation part dividing each unit into a plurality of passages extending in the direction of liquid flow to reduce crossflow and turbulence as the liquid passes through the units.
Claim 7
Dependent Claim
35 words
Apparatus as claimed in claim 5 having suction means connected to said clarified-liquid takeoff means to withdraw clarified liquid therefrom, and means in said individual units to regulate the suction in the individual takeoff means.
Claim 8
Dependent Claim
32 words
Apparatus as claimed in claim 6 having means to cause a fraction of the clarified liquid to pass said takeoff means to overcome parting turbulence adjacent the entrance to said takeoff means.
Claim 9
Dependent Claim
63 words
Apparatus as claimed in claim 6 having a connection from said discharge part above the level of sediment therein to said inlet part to cause a fraction of said clarified liquid to pass said takeoff means to overcome parting turbulence adjacent the entrance to said takeoff means, and means in said connection to move the passed-fraction of clarified liquid into said inlet portion.
Claim 10
Dependent Claim
148 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and takeoff means locAted adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part dividing each unit into a plurality of passages extending in the direction of liquid flow to reduce crossflow and turbulence as the liquid passes through the units.
Claim 11
Dependent Claim
148 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and takeoff means locAted adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part dividing each unit into a plurality of passages extending in the direction of liquid flow to reduce crossflow and turbulence as the liquid passes through the units.
Claim 12
Dependent Claim
37 words
Apparatus as claimed in claim 9 having suction means connected to said clarified liquid takeoff means to withdraw clarified liquid therefrom, and means in said individual units to regulate the suction in the individual units takeoff means.
Claim 13
Dependent Claim
30 words
Apparatus as claimed in claim 10 in which said suction regulating means comprises perforated plates in each unit transverse to the flow located along the length of said plate means.
Claim 14
Dependent Claim
147 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined form horizontal, and takeoff means located adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part comprising means to cause a fraction of the clarified liquid to pass said takeoff means to overcome parting turbulence adjacent the entrance to said takeoff means.
Claim 15
Dependent Claim
147 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined form horizontal, and takeoff means located adjacent the lower end of said plate means in position to take off clarified liquid while sediment deposits on the plate means and flows under said takeoff means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part comprising means to cause a fraction of the clarified liquid to pass said takeoff means to overcome parting turbulence adjacent the entrance to said takeoff means.
Claim 16
Dependent Claim
44 words
Apparatus as claimed in claim 12 wherein parting turbulence overcoming means comprises a connection from said discharge part above the level of sediment therein to said inlet part, and means in said connection to move the passed-fraction of clarified liquid into said inlet portion.
Claim 17
Dependent Claim
36 words
Apparatus as claimed in claim 13 having suction means connected to said clarified liquid takeoff means to withdraw clarified liquid therefrom, an means in said individual units to regulate the suction in the individual takeoff means.
Claim 18
Dependent Claim
29 words
Apparatus as claimed in claim 14 in which said suction regulating means comprises perforated plates in each unit transverse to the flow located along the length of the units.
Claim 19
Dependent Claim
155 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means, and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means having a plurality of passages directing the liquid flow downwardly from said inlet part into said separation part in a multiplicity of individual passages preventing crossflow and turbulence.
Claim 20
Dependent Claim
155 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means, and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means having a plurality of passages directing the liquid flow downwardly from said inlet part into said separation part in a multiplicity of individual passages preventing crossflow and turbulence.
Claim 21
Dependent Claim
161 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means; and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part dividing each unit into a plurality of passages extending in the direction of liquid flow to reduce crossflow and turbulence as the liquid passes through the units.
Claim 22
Dependent Claim
161 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means; and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part dividing each unit into a plurality of passages extending in the direction of liquid flow to reduce crossflow and turbulence as the liquid passes through the units.
Claim 23
Dependent Claim
160 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means; and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part comprising means to cause a fraction of the clarified liquid to pass said receiving means to overcome parting turbulence adjacent the entrance to said receiving means.
Claim 24
Dependent Claim
160 words
Apparatus for the continuous separation of material suspended in a liquid, comprising an inlet part into which the liquid to be treated is delivered; a separation part receiving said liquid from said inlet part, said separation part comprising a plurality of parallel similar units each having plate means inclined from horizontal, and receiving means located adjacent the lower end of said plate means in position to receive clarified liquid while sediment deposits on the plate means and flows under said receiving means; and means to draw off continuously the clarified liquid collected in said receiving means; and a discharge part having receptacle means in which sediment from all said units is collected, and means to withdraw sediment from said receptacle means; in combination with flow stabilization means in each unit of the separation part comprising means to cause a fraction of the clarified liquid to pass said receiving means to overcome parting turbulence adjacent the entrance to said receiving means.
References Cited (Backward Citations)
US3494475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |