EP2358479A2 - Hydrocyclone arrangement - Google Patents
Hydrocyclone arrangementInfo
- Publication number
- EP2358479A2 EP2358479A2 EP10751877A EP10751877A EP2358479A2 EP 2358479 A2 EP2358479 A2 EP 2358479A2 EP 10751877 A EP10751877 A EP 10751877A EP 10751877 A EP10751877 A EP 10751877A EP 2358479 A2 EP2358479 A2 EP 2358479A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- underflow
- arrangement according
- tank
- hydrocyclone
- feed
- 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
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
- 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
-
- 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
- B04C5/22—Apparatus in which the axial direction of the vortex is reversed with cleaning means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
Definitions
- the invention relates to a Hydrozyklonan leather with an inlet of
- Hydrozyklonan pants with tangential inlet of the feed pulp in a cylindrical-conical process space and two discharges of the separation products in a fine grain upper course and a coarse grain underflow are state of the art.
- Such apparatus are used to classify polydisperse suspensions as close as possible to a desired particle size. For physical and structural reasons, however, the selectivity in a continuous operation of hydrocyclones are limited.
- a discharge of fine particles in the underflow can be largely prevented if no or only small amounts of liquid from the hydrocyclone reach the lower reaches. It is known to carry the coarse feed of the hydrocyclone into a closed container. Such underflow chambers are used for example in hydrocyclones in the paper industry. These hydrocyclones are subject to a continuous
- the discharge capacity of the lower reaches can be increased and can be dispensed with a pre-separation of coarse grain. Even with highly fluctuating feed conditions, it is possible to stabilize the size of the separation grain and to maximize the solids content in the underflow. However, in many applications, the selectivity is not enough
- the underflow container is pressure-tight connected to the coarse grain discharge of the hydrocyclone and is filled before startup with a liquid medium, especially fresh water.
- the fresh water filling prevents unwanted discharge of
- suspension volume which is discharged in the circuit via the upper reaches of the cyclone, remains largely constant, especially when the feed solids content is only a few percent by volume.
- the underflow communicates with a closed underflow container, which has a fresh water supply.
- the respective volume of suspension to be separated in the feed tank is introduced batchwise and then fed to the hydrocyclone.
- the filling of the underflow tank with fresh water takes place before the hydrocyclone is put into operation so that the discharge of fine grain into the underflow tank is effectively reduced.
- the fine grain fraction is after shutting off the connection between
- Outlet and inlet tank discharged For this purpose, a slider or a three-way valve can be used.
- the feed tank is filled with a new batch to be treated.
- the underflow container After completion of the batch-guided circulation and separation process, the underflow container via a further slide or a
- a predetermined amount of the suspension can be withdrawn from the underflow container during the separation process.
- the removal of the cleaning water can be shut off
- the feed pump can also provide several hydrocyclones with suspension in a further development according to the invention, wherein the respective upper runs lead to a collecting line which directs the fine-grain suspension into the feed tank.
- flow sensors are provided at the inlet and / or headwaters of the arrangement.
- the feed tank has a measuring device for determining the suspension level and it is provided on the upper and lower run an array of measuring means for solids content determination.
- Fig. 2 is a representation similar to that of Fig. 1, but added to
- Hydrocyclone 4 started, with a feed tank 2 via a
- Feed pump 3 is in communication.
- the discharged through the underflow nozzle 5 coarse grain 6 is collected in a closed underflow container 7.
- the underflow container 7 is before startup of the hydrocyclone with
- Feed tank 2 returned. The cycle via the feed tank 2 to the hydrocyclone 4 is performed until the desired separation is achieved.
- the feed tank 2 can be filled with a new suspension batch 1.
- a check valve 13 is located between the underflow nozzle 5 and the underflow container 7 .
- the coarse grain suspension is discharged via a nozzle at the bottom of the underflow after opening the slide, wherein the discharge can be realized as a free outflow or only with the aid of a withdrawal pump.
- the slide between the underflow nozzle and the underflow container enables the complete or partial removal of coarse grain even during cyclone operation. As a result, a fractionation of the coarse grain can be achieved since, at first, the coarsest and later finer ones are preferred
- Fresh water stream from the underflow tank as explained, be used to clean the entire system.
- the present invention In order to make the discontinuous operation of the presented arrangement quasi-continuous, in one embodiment, the
- the first container is filled and switched to by means of a slide when the separation of the one being processed
- Flow measurement according to the embodiment makes it possible to determine whether there is a blockage when interconnecting a plurality of cyclones.
- Blockages in the underflow can, according to the illustration of FIG. 3 be eliminated by a cleaning rod 19 is inserted through the neck at the bottom of the underflow container.
- This cleaning rod 19 may be encountered in a blockage in the underflow nozzle 16.
- the discharge nozzle is located directly under the underflow nozzle 16.
- the needle 19 may have a guide, the alignment of the same on the
- a cleaning of the lower courses can be done after each separation cycle as a precaution.
- the clogging of a cyclone does not affect the overall separation result. It is possible to monitor the quality of the separation result during operation by measuring the solids content in the upper run or alternatively in the lower run vessel. In addition to this, the grain size distributions in the upper run and / or in the lower run can be determined.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910039238 DE102009039238B3 (en) | 2009-08-28 | 2009-08-28 | Hydrocyclone arrangement |
PCT/EP2010/062272 WO2011023663A2 (en) | 2009-08-28 | 2010-08-23 | Hydrocyclone arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2358479A2 true EP2358479A2 (en) | 2011-08-24 |
EP2358479B1 EP2358479B1 (en) | 2013-01-16 |
Family
ID=43430886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10751877A Not-in-force EP2358479B1 (en) | 2009-08-28 | 2010-08-23 | Hydrocyclone arrangement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2358479B1 (en) |
DE (1) | DE102009039238B3 (en) |
ES (1) | ES2403090T3 (en) |
WO (1) | WO2011023663A2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9909333B2 (en) | 2015-01-26 | 2018-03-06 | Hayward Industries, Inc. | Swimming pool cleaner with hydrocyclonic particle separator and/or six-roller drive system |
US9885196B2 (en) | 2015-01-26 | 2018-02-06 | Hayward Industries, Inc. | Pool cleaner power coupling |
US10156083B2 (en) | 2017-05-11 | 2018-12-18 | Hayward Industries, Inc. | Pool cleaner power coupling |
US9896858B1 (en) | 2017-05-11 | 2018-02-20 | Hayward Industries, Inc. | Hydrocyclonic pool cleaner |
US9885194B1 (en) | 2017-05-11 | 2018-02-06 | Hayward Industries, Inc. | Pool cleaner impeller subassembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI43305C (en) * | 1962-12-20 | 1971-03-10 | Bauer Bros Co | Hydrocyclone |
DE3539483C3 (en) * | 1985-11-07 | 1994-12-15 | Steinmueller Gmbh L & C | Process and plant for feeding hydrocyclones with a solid-laden liquid |
DE19508430A1 (en) * | 1995-03-09 | 1996-09-12 | Schauenburg Masch | Hydrocyclone for separating material mixtures |
DE19849870C2 (en) * | 1998-10-29 | 2002-10-31 | Akw App Und Verfahren Gmbh & C | Hydrocyclone arrangement |
-
2009
- 2009-08-28 DE DE200910039238 patent/DE102009039238B3/en not_active Expired - Fee Related
-
2010
- 2010-08-23 EP EP10751877A patent/EP2358479B1/en not_active Not-in-force
- 2010-08-23 WO PCT/EP2010/062272 patent/WO2011023663A2/en active Application Filing
- 2010-08-23 ES ES10751877T patent/ES2403090T3/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011023663A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011023663A2 (en) | 2011-03-03 |
ES2403090T3 (en) | 2013-05-14 |
WO2011023663A3 (en) | 2011-04-21 |
DE102009039238B3 (en) | 2011-05-12 |
EP2358479B1 (en) | 2013-01-16 |
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