US3756405A - Separating apparatus and method - Google Patents
Separating apparatus and method Download PDFInfo
- Publication number
- US3756405A US3756405A US00232449A US3756405DA US3756405A US 3756405 A US3756405 A US 3756405A US 00232449 A US00232449 A US 00232449A US 3756405D A US3756405D A US 3756405DA US 3756405 A US3756405 A US 3756405A
- Authority
- US
- United States
- Prior art keywords
- grid
- elements
- conduit
- separating
- set forth
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
Definitions
- This invention therefore resides in an improved separating apparatus and method having a downwardly extending grid and means for delivering material to be separated onto an upper end portion of the grid.
- Said grid is formed of elements spaced one from the other a distance sufficient for separating pellet globules and elongated filaments from pellets.
- Conduits extend across the grid and have a plurality of openings directed along the upper surface of the grid and through the grid for passing pressurized fluid streams therealong and therethrough.
- FIG. 1 shows a side view of the apparatus
- FIG. 2 shows a view of the grid of the apparatus
- FIG. 3 shows another embodiment of the grid.
- a housing 2 having first and second outlets 4, 6 and an inlet 8 is positioned about a downwardly extending separating apparatus or grid 10.
- a material hopper 12 contains materials to be separated and extends through the housing inlet 8 with its discharge end 14 adjacent and over an upper end portion 16 of an upper surface 18 of the grid 10.
- a blower 20 can be positioned adjacent a lower surface 22 of the grid for passing a volume of air through the housing 2 and the grid 10 in a direction from the lower surface 22 toward the upper surface 18 of the grid 10.
- the first outlet 4 is in communication with the lower surface 22 of the grid 10 for delivering separated material, pellets for example, to a preselected location.
- the second outlet 6 is in communication with the upper surface 18 of the grid 10 for directing material that does not pass through the grid 10, for example balled filaments and elongated filaments, to another preselected location, for example a disposal location.
- the granular polymers can be accompanied by balled filaments called bird nests," fine particles called fines and elongated filaments or film streamers called angel hair.
- pellets 26 By use of the term pellets 26 herein, it is meant the desired product particles.
- balled filaments 28 utilized herein is meant a conglomeration of entangled elongated filaments sometimes called bird nest.
- elongated filaments 29 utilized herein is meant the elongated strips or film streamers sometimes called angel hair.
- the pellets 26 pass through the grid 10 and outwardly through the first oulet 4 to a recovery situs.
- the balled filaments 28 and the elongated filaments 29 do not pass through the grid 10 and are directed into and through the second outlet 6 to another location where they are recovered and disposed of. At least a portion of the fines can be removed from the pellets 26 by a stream of air passing from the blower through the second outlet 6.
- a first conduit 30 is positioned across the grid 10 adjacent the upper end portion 16 and the upper surface 18 of the grid 10.
- the first conduit 30 has a plurality of openings 32 directed along the upper surface of the grid 10.
- the first conduit 30 is connected to a pressurized fluid supply source 34, for example an air compressor, for passing air into and through the conduit 30, through the conduit openings 32, and along the upper surface 18 of the grid 10.
- a pressurized fluid supply source 34 for example an air compressor
- a second conduit 36 is positioned across the grid 10 adjacent a lower end portion 38 of the grid 10 and the lower surface 22 of the grid 10.
- the second conduit 36 has a plurality of openings 40 directed toward the grid 10.
- the second conduit 36 is also connected to a pressurized air supply source, preferably source 34, for passing air into and through the conduit 36, through the conduit openings 40, and the grid 10.
- a pressurized air supply source preferably source 34
- the grid 10 is preferably formed of elongated, separating or grid elements 42.
- These grid elements 42 are preferably of a curvalinear concave configuration in order that the elements can be of greater stiffness and the spacing between the elements 42 can be maintained without further bracing which might decrease the efficiency of separation.
- the elements In order to further increase the rigidity of elements 42, it is preferred that the elements be maintained in tension along their length by exerting opposed forces on opposite ends of the elements with said forces being directed in opposed directions.
- the elements 42 can be corrugated or of other configuration.
- removable spacing elements 44 be positioned between adjacent grid elements 42 in order that the distance of separation A between adjacent grid elements 42 can be easily changed when the materials to be separated are changed.
- openings 40 of the second conduits 36 be aligned and directed toward the spaces S between adjacent grid elements 42 and that there i be an opening adjacent eachspace.
- a preferred angle of inclination (in FIG. 3) of the grid 10 is an angle in the range of about 12 to about 26 relative to the horizontal. At angles less than about 12 the material tends to pile up on the grid 10, and at angles greater than about 26 excessive amounts of pellets are not separated and pass through the second outlet 6, thereby resulting in waste.
- the air streams passing from the openings 32 contact the material discharging from the hopper 12 and stir said material on the grid 10 thereby facilitating the separation of the pellets by bringing said pellets to unrestricted locations above the spaces S of the grid 10.
- pellets 26 often become supported by elongated filaments 29 and/or the balled filaments 28 and are moved by the undesirable material into the second outlet 6 thereby causing waste.
- the air streams discharging from openings 40 contact the elongated filaments 29 and balled filaments 28 and cause them to be urged upwardly for further assuring that said materials 28, 29 are not supporting pellets and causing pellets to be separated from the materials.
- At least a portion, preferably all, of the grid elements 42 adjacent the second conduit 36 have an abrupt change in width W" forming an interrupted upper surface 18.
- the interruption 50 is of a magnitude such that material 26, 28, 29 moving along the upper surface 18 of the grid elements 42 free fall at the location of the interruption 50 from the upper end portion 16 to the lower end portion 38 of the grid elements 42.
- a separating apparatus having a downwardly extending grid and means for delivering material to be separated onto an upper end portion of the grid, said grid being formed of grid elements spaced one from the other a distance sufficient for passing pellets between the grids for separating pellet globules and elongated filaments from the pellets, the improvement comprising:
- first conduit extending across the grid adjacent the upper end portion and an upper surface ofthe grid, said conduit having a plurality of openings directed along the upper surface of the grid;
- a second conduit extending across the grid adjacent a lower end portion of the grid and a lower surface of the grid, said conduit having a plurality of openings directed toward the grid for passing air from the conduit upwardly through the grid;
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23244972A | 1972-03-07 | 1972-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3756405A true US3756405A (en) | 1973-09-04 |
Family
ID=22873155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00232449A Expired - Lifetime US3756405A (en) | 1972-03-07 | 1972-03-07 | Separating apparatus and method |
Country Status (10)
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4900498A (en) * | 1988-03-25 | 1990-02-13 | Phillips Petroleum Company | Method for separating elongated contaminants from a stream of material |
US5009331A (en) * | 1988-03-25 | 1991-04-23 | Phillips Petroleum Company | Apparatus for separating elongated contaminants from a stream of material |
US5341937A (en) * | 1992-12-16 | 1994-08-30 | Machinefabriek Bollegraaf Appingedam B.V. | Apparatus for separating recyclable waste |
DE4446323A1 (de) * | 1994-12-23 | 1996-06-27 | Koehl Maschbau Gmbh | Tabakrecycling |
DE19606890A1 (de) * | 1996-02-23 | 1997-08-28 | Peter Sendrowski | Verfahren und Vorrichtung zum Trennen von Kunststoff- bzw. Nichtkunststoff-Mischkomponenten |
US20060016920A1 (en) * | 2004-05-18 | 2006-01-26 | Wolfgang Holzer | Device for feeding wood chips to a processing unit |
US20100133152A1 (en) * | 2008-12-03 | 2010-06-03 | Westlake Longview Corporation | Streamer trap assembly |
CN111036552A (zh) * | 2019-12-25 | 2020-04-21 | 巢湖美维食品有限公司 | 一种紫薯干加工用原料连续式筛选装置 |
US10987699B2 (en) * | 2016-11-08 | 2021-04-27 | Jesús Sánchez Rodríguez | Density separator for waste material |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5342038B2 (US07118763-20061010-C00002.png) * | 1973-11-19 | 1978-11-08 | ||
JP2535778B2 (ja) * | 1994-03-18 | 1996-09-18 | 工業技術院長 | 固形物の気流選別方法及び装置 |
DE19717514A1 (de) * | 1997-04-25 | 1998-10-29 | Peter Dieckmann | Verfahren und Vorrichtung zur Aufbereitung von getrockneten Kräutern |
DE102013010841A1 (de) * | 2013-06-28 | 2014-12-31 | Dirk Barnstedt | Vorrichtung zum Trennen von flächigen und körperförmigen leichten und schweren Feststoffen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US742158A (en) * | 1902-03-21 | 1903-10-27 | American Coal Screen Company | Coal-screen. |
US2825454A (en) * | 1954-09-10 | 1958-03-04 | Merrill N Musgrave | Devices for separating raisins from admixed stems |
US3506123A (en) * | 1968-12-06 | 1970-04-14 | Allis Chalmers Mfg Co | Rod deck screen with resilient material receiving section |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4840131A (US07118763-20061010-C00002.png) * | 1971-09-29 | 1973-06-13 |
-
1972
- 1972-03-07 US US00232449A patent/US3756405A/en not_active Expired - Lifetime
- 1972-11-22 CA CA157,186A patent/CA970720A/en not_active Expired
-
1973
- 1973-01-08 ZA ZA730127A patent/ZA73127B/xx unknown
- 1973-02-06 JP JP48015110A patent/JPS5834190B2/ja not_active Expired
- 1973-03-02 ES ES412225A patent/ES412225A1/es not_active Expired
- 1973-03-06 IT IT21246/73A patent/IT981161B/it active
- 1973-03-06 BE BE128420A patent/BE796333A/xx not_active IP Right Cessation
- 1973-03-06 GB GB1073073A patent/GB1412035A/en not_active Expired
- 1973-03-07 DE DE2311308A patent/DE2311308C3/de not_active Expired
- 1973-03-07 FR FR7308167A patent/FR2175144B1/fr not_active Expired
- 1973-03-07 DE DE7308642U patent/DE7308642U/de not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US742158A (en) * | 1902-03-21 | 1903-10-27 | American Coal Screen Company | Coal-screen. |
US2825454A (en) * | 1954-09-10 | 1958-03-04 | Merrill N Musgrave | Devices for separating raisins from admixed stems |
US3506123A (en) * | 1968-12-06 | 1970-04-14 | Allis Chalmers Mfg Co | Rod deck screen with resilient material receiving section |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4900498A (en) * | 1988-03-25 | 1990-02-13 | Phillips Petroleum Company | Method for separating elongated contaminants from a stream of material |
US5009331A (en) * | 1988-03-25 | 1991-04-23 | Phillips Petroleum Company | Apparatus for separating elongated contaminants from a stream of material |
US5341937A (en) * | 1992-12-16 | 1994-08-30 | Machinefabriek Bollegraaf Appingedam B.V. | Apparatus for separating recyclable waste |
DE4446323A1 (de) * | 1994-12-23 | 1996-06-27 | Koehl Maschbau Gmbh | Tabakrecycling |
DE19606890A1 (de) * | 1996-02-23 | 1997-08-28 | Peter Sendrowski | Verfahren und Vorrichtung zum Trennen von Kunststoff- bzw. Nichtkunststoff-Mischkomponenten |
US20060016920A1 (en) * | 2004-05-18 | 2006-01-26 | Wolfgang Holzer | Device for feeding wood chips to a processing unit |
US20100133152A1 (en) * | 2008-12-03 | 2010-06-03 | Westlake Longview Corporation | Streamer trap assembly |
US8118173B2 (en) * | 2008-12-03 | 2012-02-21 | Westlake Longview Corp. | Streamer trap assembly |
US10987699B2 (en) * | 2016-11-08 | 2021-04-27 | Jesús Sánchez Rodríguez | Density separator for waste material |
CN111036552A (zh) * | 2019-12-25 | 2020-04-21 | 巢湖美维食品有限公司 | 一种紫薯干加工用原料连续式筛选装置 |
Also Published As
Publication number | Publication date |
---|---|
CA970720A (en) | 1975-07-08 |
JPS5834190B2 (ja) | 1983-07-25 |
FR2175144B1 (US07118763-20061010-C00002.png) | 1976-09-10 |
GB1412035A (en) | 1975-10-29 |
JPS48101648A (US07118763-20061010-C00002.png) | 1973-12-21 |
DE2311308B2 (US07118763-20061010-C00002.png) | 1980-01-03 |
FR2175144A1 (US07118763-20061010-C00002.png) | 1973-10-19 |
ZA73127B (en) | 1973-09-26 |
ES412225A1 (es) | 1976-05-01 |
BE796333A (fr) | 1973-09-06 |
DE2311308C3 (de) | 1980-09-04 |
DE7308642U (de) | 1976-03-18 |
DE2311308A1 (de) | 1973-10-18 |
AU5100273A (en) | 1974-07-11 |
IT981161B (it) | 1974-10-10 |
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