EP1247582A2 - Appareil pour le broyage de matière en vrac - Google Patents

Appareil pour le broyage de matière en vrac Download PDF

Info

Publication number: EP1247582A2
Authority: EP; European Patent Office
Prior art keywords: area; grinding; section; nozzles; cross
Prior art date: 2001-04-03
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

Application number

EP02006336A

Other languages

German (de)

English (en)

Other versions

EP1247582B1 (fr

EP1247582A3 (fr

Inventor

Josef Fischer

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Lehigh Technologies Inc

Original Assignee

Individual

Priority date (The priority date 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 date listed.)

2001-04-03

Filing date

2002-03-21

Publication date

2002-10-09

2002-03-21 Application filed by Individual filed Critical Individual

2002-10-09 Publication of EP1247582A2 publication Critical patent/EP1247582A2/fr

2004-11-24 Publication of EP1247582A3 publication Critical patent/EP1247582A3/fr

2013-07-10 Application granted granted Critical

2013-07-10 Publication of EP1247582B1 publication Critical patent/EP1247582B1/fr

2022-03-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/065—Jet mills of the opposed-jet type
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/068—Jet mills of the fluidised-bed type

Definitions

the invention relates to a device for crushing bulk material, in particular a fluidized bed jet mill, with one with a vertical Axle-arranged housing, which is a lower one, with compressed air grinding area which can be acted upon and an upper, by a preferably with a bulk material feed device provided rising area distanced from the grinding area, with a Separation device provided separation area.
the housing interior can form the entrance of the riser area be narrowed compared to the grinding area. This enables a simple, inexpensive manufacture and a maintenance-free Operation.
this measure can lead to the formation of Cross-section reduction at the transition from the grinding area to the riser area a glare insert may be provided.
This is also advantageous can be retrofitted and therefore offers a simple and Cost-effective option for retrofitting existing devices Generic type with the device according to the invention for Increase throughput.
the housing for Implementation of the desired cross-section reduction at the entrance of the climbing area has a constriction.
the climbing area can expediently be a polygonal, preferably square cross-section and the grinding area one have circular cross section.
the polygonal cross section of the Rising area facilitates the formation and arrangement of Inspection flaps etc.
the round cross section of the grinding area favors the formation of the above-mentioned torus flow and ensures an even center distance with radial Grinding nozzles arranged on the circumference.
Another advantageous measure can be that the Grinding area a barrel-shaped circumferential limitation having. This favors the avoidance of Flow losses within the scope of the inside out and reverse rotating torus flow.
Fluid bed counter-jet mills become shredders various types of softer and / or brittle and / or harder Bulk materials such as glass, stone, wax, resin, metal and the like used.
the basic structure and the mode of operation of such Arrangements are known per se.
the fluid bed counter jet mill on which FIG. 1 is based consists in in a known manner from a vertical axis arranged, pot-like housing 1, which has a lower grinding area 2, an upper Separation area 3 and in between the distance between Grinding area 2 and separation area 3 bridging rising area 4 contains.
the areas mentioned are arranged coaxially one above the other.
the grinding area 2 are arranged with a radial axis and coplanar the circumferential boundary of the grinding area 2 attached grinding nozzles 5 assigned. These can be pressurized with compressed air.
This is one of the Housing 1 expediently in the area of the riser area 4 a compressed air source connectable ring line 6 is provided, from the the branch lines 7 leading from the nozzles 5.
the compressed air is appropriately compressed to a pressure of 3 - 6 bar.
the grinding area suitably has a circular cross section. But others too Cross-sectional shapes such as ellipsoid or polygonal are conceivable.
the separation area 3 contains one with a suitably above the Housing 1 arranged, not shown here drive unit coupled separation device 8. This is preferably an air classifier educated.
the separating device 8 contains one to the outside leading outlet nozzle 9 for the finished regrind.
the riser area 4 is designed as a simple shaft.
the The product is fed in above the grinding area 2
Rise area 4 opening discharge port 10 provided.
this can be assigned a shut-off device, not shown here be controllable so that the existing in the housing 1 Material filling remains largely constant.
the housing can do this 1 can simply be added to load cells 11, through which said Shut-off device is controllable. But it would also be conceivable for others Level indicators such as capacitive or inductive probes
the arrows 12 emerging from the grinding nozzles 5 in FIG indicated compressed air jets are the particles of the accelerated bulk material in the grinding area 2 and hurled against each other, whereby the particles are crushed. Air is sucked in by the separating device 8, and the shredded air Carries particles. The very heavy particles are already sweeping in Rise area 4 and fall back into grinding area 2. In the Rising area 4 forming shaft therefore finds one of the Separation device 8 upstream gravity reading instead, each is more or less strong according to the height of the climbing area 4. The remaining Particles reach the separator 8, which is the one desired Particles having particle size feeds the outlet port 9. The coarser particles are returned to grinding area 2.
the Input cross section 13 of the riser area 4 is smaller than that in the area of the Grinding nozzles 5 present cross section of the grinding area 2.
This The cross section can be reduced through the input cross section 13 assigned flaps or, as in the examples shown, by a in the transition zone between grinding area 2 and riser area 4 intended narrowing of the interior of the housing 1, through which a smaller clear width of the input cross section 13 and thus automatically results in a reduction in the free cross-sectional area, be accomplished.
FIGS. 1 and 2 are based the grinding area 2 upwards by one of its revolving Wall stepwise constriction 14 des Limited housing 1, which is compared to the cross section of the Grinding area 2 reduced inlet cross section 13 of the rising area 4 results.
the riser area 4 can have the same cross-sectional shape as that Have grinding area 2, which here has a round cross-section, so that there is a uniform circumferential constriction of the housing.
the climbing area has 4, as in FIG. 2 can be seen, a square cross-section with an opposite Diameter of the grinding area 2 having a round cross section reduced edge length.
the edge length of the cross section of the Rising area 4 is selected here so that the handling of the Grinding area 2 as an enclosed circle results in a square.
Surrender between the outer circumference of the grinding area 2 and the Wall of the riser area 4 four circular section-shaped gaps that pass through corresponding cover plates 15 are closed. These can be horizontal be arranged.
the cover plates 15 are at an angle of Arranged 45 ° from outside to inside. This turns out to be aerodynamically favorable, as this avoids so-called dead water areas can be.
the bottom 16 of the grinding area 2 can have a edge-side arch region 17 on the circumferential, drum-shaped Connect jacket 18 of grinding area 2. But it would also be conceivable to deepen the bottom of the grinding area 2, approximately in shape one indicated by a broken line in FIG. funnel-like depression or one in Figure 4 by an interrupted Line indicated dome-shaped depression.
annular screen insert 19 is provided. This is inserted into the housing 1. With this version you come therefore without constriction of the housing 1.
the climbing area 4 can rather have the same cross section as the grinding area 2, so that a housing with a constant cross-section over the entire height, preferably circular outer wall can be used, such as this is the case with the known arrangements.
the glare insert 19 is therefore very suitable for retrofitting the known ones Arrangements.
the side flanks 20 of the annular cover insert 19 run out already in connection with the inclination of the cover plates 15 explained, flow-related reasons converging towards the center.
the side flanks 20 of the insert 19 are additionally fluted in an arc shape. This results in a particularly low loss Flow deflection in the upper, outer edge area of the grinding area 2.
the radius of curvature of the groove of the side flanks 20 can be approximately the radius of curvature of the outer arc region 17 of the bottom 16 of the Correspond to grinding range 2.
the bottom 16 can, as already above mentioned, be funnel-shaped or dome-shaped, as with broken line is indicated.
the insert 19 is a rigid molded part educated. But it would also be conceivable, one like one so-called iris trained trained, adjustable glare insert provided. The size of the input cross section 13 could be adjusted and thus experimentally the circumstances of the individual case be adjusted.
the circumferential Sheath 18 of the grinding area 2 is barrel-shaped, that is to say Convex on the outside and concave on the inside.
the grinding area 2 has accordingly one starting from the one containing the grinding nozzles 5 Level narrowing up and down continuously Cross-section.
the upper edge of the barrel-shaped jacket 18 has accordingly a smaller diameter than that of the grinding nozzles 5 containing middle plane.
Rise area 4 which has a constant, the contour of the upper edge of the barrel-shaped jacket 18 has a corresponding circular cross section.
the Input cross section 13 of the riser area 4 corresponds to the cross section of the upper, shell-side edge, which is due to the narrowing of the cross-section the grinding area 2, as already mentioned above, smaller than that Cross-sectional plane of the grinding area 2 containing grinding nozzles 5.
the Bottom 16 of the grinding area 2 is here to accomplish one simple manufacture designed as a flat floor. A deepening in In the form of a broken line Chalotte-like depression would be too fluidically prefer.
the above-mentioned, rapid and intensive shredding of the Grist is formed by the most uniform possible formation of the Grinding area 2 resulting material cloud favored.
To do this are radial on the circumference of the grinding area 2 limiting jacket 18 provided a comparatively large number of grinding nozzles 5, which, however, have a comparatively small nozzle cross section, so that the total compressed air consumption is roughly the total compressed air consumption the known arrangements with comparative little, but a large nozzle cross-section grinding nozzles equivalent.
there are six Grinding nozzles 5 are provided on the circumference. These are, as above mentioned in a common radial plane and are radial aligned axis arranged.

Landscapes

Engineering & Computer Science (AREA)
Food Science & Technology (AREA)
Disintegrating Or Milling (AREA)

EP20020006336 2001-04-03 2002-03-21 Appareil pour le broyage de matière en vrac Expired - Lifetime EP1247582B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2001116483 DE10116483B4 (de)	2001-04-03	2001-04-03	Vorrichtung zum Zerkleinern von Schüttgut
DE10116483		2001-04-03

Publications (3)

Publication Number	Publication Date
EP1247582A2 true EP1247582A2 (fr)	2002-10-09
EP1247582A3 EP1247582A3 (fr)	2004-11-24
EP1247582B1 EP1247582B1 (fr)	2013-07-10

Family

ID=7680151

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20020006336 Expired - Lifetime EP1247582B1 (fr)	2001-04-03	2002-03-21	Appareil pour le broyage de matière en vrac

Country Status (2)

Country	Link
EP (1)	EP1247582B1 (fr)
DE (1)	DE10116483B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2005028115A1 (fr) *	2003-09-19	2005-03-31	Micropulva Ltd Oy	Buse d'acceleration amelioree pour suspension de gaz-solides
CN108114793A (zh) *	2017-12-13	2018-06-05	廊坊新龙立机械制造有限公司	一种卧式流化床气流粉碎机
US10675634B2 (en)	2015-08-13	2020-06-09	Lehigh Technologies, Inc.	Systems, methods, and apparatuses for manufacturing micronized powder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006001937A1 (de) *	2006-01-14	2007-09-27	Lehigh Technologies, LLC, Naples	Trennen von Mineralien
DE102013002237B3 (de)	2013-02-11	2014-05-22	Microtec Gmbh	Sichtermühle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE535348C (de) *		1933-01-10	Paul Anger	Sichter fuer Luftstrahl-Prallzerkleinerer
DE494041C (de) *	1929-06-08	1930-03-17	Paul Anger	Verfahren und Vorrichtung zum Regeln des Energiebedarfs von Luftstrahl-Prallzerkleinerern
DE2510297C2 (de) *	1975-03-10	1987-03-05	Gosudarstvennyj Vsesojuznyj nau&ccaron;no-issledovatel'skij institut cementnoj promy&scaron;lennosti Niicement, Moskau/Moskva	Strahlmühle
DE2543691C2 (de) *	1975-09-30	1984-01-19	Gosudarstvennyj Vsesojuznyj nau&ccaron;no-issledovatel'skij institut cementnoj promy&scaron;lennosti Niicement, Moskva	Strahlmühle
JPH10286483A (ja) *	1997-04-14	1998-10-27	Mitsubishi Chem Corp	粉砕分級方法

2001
- 2001-04-03 DE DE2001116483 patent/DE10116483B4/de not_active Expired - Fee Related
2002
- 2002-03-21 EP EP20020006336 patent/EP1247582B1/fr not_active Expired - Lifetime

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2005028115A1 (fr) *	2003-09-19	2005-03-31	Micropulva Ltd Oy	Buse d'acceleration amelioree pour suspension de gaz-solides
US10675634B2 (en)	2015-08-13	2020-06-09	Lehigh Technologies, Inc.	Systems, methods, and apparatuses for manufacturing micronized powder
CN108114793A (zh) *	2017-12-13	2018-06-05	廊坊新龙立机械制造有限公司	一种卧式流化床气流粉碎机
CN108114793B (zh) *	2017-12-13	2023-08-29	廊坊新龙立机械制造有限公司	一种卧式流化床气流粉碎机

Also Published As

Publication number	Publication date
DE10116483B4 (de)	2006-08-17
DE10116483A1 (de)	2002-10-17
EP1247582B1 (fr)	2013-07-10
EP1247582A3 (fr)	2004-11-24

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2007-03-07	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: LEHIGH TECHNOLOGIES, LLC
2007-03-07	RIN1	Information on inventor provided before grant (corrected)	Inventor name: FISCHER, JOSEF
2009-10-21	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: LEHIGH TECHNOLOGIES, INC.
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