EP0686821A1 - Refroidisseur à deux couches de charge - Google Patents

Refroidisseur à deux couches de charge Download PDF

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Publication number
EP0686821A1
EP0686821A1 EP95105650A EP95105650A EP0686821A1 EP 0686821 A1 EP0686821 A1 EP 0686821A1 EP 95105650 A EP95105650 A EP 95105650A EP 95105650 A EP95105650 A EP 95105650A EP 0686821 A1 EP0686821 A1 EP 0686821A1
Authority
EP
European Patent Office
Prior art keywords
cooler
chute
goods
cooler according
grate
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
Application number
EP95105650A
Other languages
German (de)
English (en)
Other versions
EP0686821B1 (fr
Inventor
Bernd Dipl.-Ing. Nienaber
Hermann Dipl.-Ing. Niemerg
Günter Dipl.-Ing. Driemeier
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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.)
Filing date
Publication date
Application filed by Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0686821A1 publication Critical patent/EP0686821A1/fr
Application granted granted Critical
Publication of EP0686821B1 publication Critical patent/EP0686821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate

Definitions

  • the invention relates to a two-layer cooler in which an upper layer of hot refrigerated goods is placed on a lower layer of pre-cooled refrigerated goods at the start of the cooler and the two layers are separated from one another by a separating device at the end of the cooler, the goods from the lower layer being removed as finished goods and the goods the crusher first passes through a crusher before it is returned to the start of the cooler by a transport device as circulating material and is given there as the lower layer.
  • a two-layer cooler of the type mentioned above is known for example from DE-C-1 097 346.
  • a blade-like mechanical cutting edge is arranged at the cooler end.
  • the invention is therefore based on the object of designing a two-layer cooler of the type mentioned at the outset in such a way that the freedom from maintenance and the reliability of the system are substantially improved in the region of the separating device.
  • This object is achieved in that the crusher is preceded by a guide surface which is inclined so flat that a resting material zone forms on it, which forms the separating device for separating the upper and lower material layers.
  • the separating device is not formed by a separate mechanical element, but rather by a resting zone of the refrigerated goods, the wear which is inevitable in the area of the separating device only has an effect between good particles moving relative to one another.
  • wear on a mechanical cutting edge such abrasion is in no way disturbing, since the fine material particles that are created in this way are removed with the finished product and the stationary material zone is automatically regenerated from the newly supplied material flow.
  • the two-layer cooler shown in FIG. 1 in a schematic overall view is designed as a sliding grate cooler, successive rows of plates 1, 2 being alternately arranged in a stationary and movable manner.
  • the rows of plates of the cooler are combined into several groups 3, 4, 5, which are supplied with cooling air separately via fans 6 and 7 or 8, 9.
  • a lower layer 10 of pre-cooled goods to be cooled is placed on the grate surface of the cooler.
  • An upper layer 11 of hot refrigerated goods is applied to this lower layer 10.
  • the pre-cooled goods to be cooled in the lower layer 10 are fed via a shaft 12 which is separated from a shaft 14 by a bunker wall 13, through which the hot goods to be cooled - for example coming from a rotary kiln - are fed onto the lower layer 10 of the two-layer cooler.
  • a finished goods chute 15 is provided at the end of the cooler for removing the goods from the lower layer 10, the details of which are explained in more detail with reference to FIGS.
  • a crusher 16 At the end of the cooler there is also a crusher 16, upstream of which a chute 17 which feeds the material from the upper layer 11 to the crusher 16.
  • This chute 17 is inclined so flat that a stationary goods zone 18 is formed on it. It provides a separation device which separates the layers 10 and 11 from one another at the end of the cooler by holding back the material from the lower layer 10 and guiding it into the finished goods shaft 15, while the material from the upper layer 11 can slide over the stationary material zone 18 so that it leads to the crusher 16 reached.
  • Coarse parts of the material of the upper layer 11 are crushed by the crusher 16. After passing through the crusher 16, the material from the upper layer 11 comes back as circulating material to the start of the cooler (conveyor line 19) and is applied there as the lower layer 10 to the grate surface of the cooler.
  • the lower end of the finished goods chute 15 opens out at a distance above a storage surface 20 which is formed by a horizontally arranged table. Its dimensions and its distance from the lower end of the finished goods chute 15 are selected such that the bulk material cone 21a of the finished goods 21 emerging from the finished goods chute 15 opens onto the surface of the table forming the storage surface 20 within the table edges.
  • a discharge member 22 can be moved back and forth along the storage surface 20 in the direction of the double arrow 23.
  • the stroke speed and the stroke length of this discharge member 22, which is designed as a bar, are variable.
  • the inlet opening of the finished goods chute 15 at the upper end of the chute is covered by a classifying device 24 designed as a sieve or grate.
  • the finished goods chute 15 extends across the entire width of the cooler (see FIG. 3). Its cross section widens towards the bottom (see Fig. 2).
  • the grate plates of the movable plate rows 2 are carried by an oscillating frame 25 which can be moved back and forth in the direction of the double arrow 26, while the plates of the plate rows 1 are firmly arranged.
  • the last movable plate row 2a in the conveying direction is arranged so that it at least partially covers the area of the classifying device 24.
  • the movable plate rows 2 can be connected in sections to a channel which moves with the oscillating frame 25 and is supplied with air via a sliding seal.
  • the finished product 21 discharged from the discharge member 22 to both sides over the front and rear edge of the storage surface 20 is transported further via a device (conveyor line 27) not shown. If desired, a part of the material of the upper layer 11 can be mixed into the finished product after passing through the crusher 16 (conveyor line 28).
  • Rusting material that falls between the grate plates of the fixed and movable rows of plates 1, 2 is fed via a transport device 29 either to the conveying line 27 of the finished goods or to the conveying line 19 of the circulating goods.
  • the lower layer 10 of pre-cooled items to be cooled protects the grate surface of the cooler from excessive thermal stress and from excessive wear from the hot items to be cooled, which forms the upper layer 11.
  • the two layers are separated from one another by the separating device formed by the stationary goods zone 18.
  • the thickness of the upper and lower layers can be changed by adjusting the height of the separating device.
  • the height of the stationary goods zone 18 (and thus the thickness of the lower layer 10) can be increased by reducing the inclination of the chute 17 (and vice versa).
  • the relative layer thickness can also be influenced, for example, by raising or lowering the chute 17 (with the chute inclination remaining the same).
  • the classifying device 24 provided at the upper end of the finished goods chute 15 holds back larger pieces of material that are present in the lower layer 10. These chunks of material are then either subjected to an autogenous comminution in the material of the lower layer above the classifying device 24, or they reach the stationary material zone 18 or the upper layer 11. In the latter case, they pass through the crusher 16 again.
  • the finished goods 21 accumulate on the storage surface 20 because the bulk material cone 21a opens on the surface of the table forming the storage surface 20 within the table edges. Irrespective of the particular grain composition of the finished product 21, which may change during operation, the quantity of good discharged is therefore determined exclusively by the stroke speed and the stroke length of the discharge member 22.
  • the last movable row of plates 2a of the cooler has extended push edges so that the sieve bars of the classifying device 24 are wholly or partially covered.
  • at least the area covered by the last movable row of plates is always kept free during the return stroke, even when large extension pieces reach the area of the classifying device 24.
  • This area is dimensioned so large that the quantity of material from the lower layer 10 passes through.
  • the sieve bars of the classifying device 24 prevent large items of good from getting into the finished goods chute 15. In this way, clogging between the lower end of the finished goods chute 15 and the table forming the storage surface 20 is avoided.
  • the discharge member 22 designed as a bar is driven mechanically or hydraulically. It is expediently protected against wear by cast elements.
  • the two partial flows of the finished goods 21, which are discharged from the storage area 20 by the discharge member 22, can either - as indicated in FIG. 1 - be combined to form a common conveyor line 27 or be transported separately.
  • FIG 5 shows a variant of an expedient embodiment of the devices downstream of the crusher 16 for discharging the circulating material (i.e. the material of the upper layer 11).
  • the crusher 16 is followed by a sieve grate 30, the passage openings of which are dimensioned in such a way that chilled goods crushed by the crusher pass through the sieve grate, larger foreign bodies (for example broken rings of the crusher 16) are retained.
  • a chute 31 adjoins the sieve grate 30 and has a main outlet 32 which feeds the circulating material (conveyor line 19 according to FIG. 1) to a transport device and two bypass outlets 33, 34. Through the two last-mentioned bypass outlets 33, 34, chilled goods of the upper layer 11 can optionally be drawn off as finished goods. It then reaches the conveyor line 27 of the finished product in accordance with the conveyor line 28 (according to FIG. 1).
  • the three outlets 32, 33 and 34 can be optionally released or closed by slides 35 to 37.
  • the bypass outlets 33, 34 are also emergency routes in the event of failure of a transport device for the circulating goods.
  • bypass outlets 33, 34 are basically closed.
  • the cooler can also be operated in one shift if desired. In this case, the goods are blocked in the chute 31 as indicated by the goods cone 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
  • Semiconductor Lasers (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Adjustment And Processing Of Grains (AREA)
EP95105650A 1994-06-06 1995-04-13 Refroidisseur à deux couches de charge Expired - Lifetime EP0686821B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4419729A DE4419729A1 (de) 1994-06-06 1994-06-06 Zweischichtkühler
DE4419729 1994-06-06

Publications (2)

Publication Number Publication Date
EP0686821A1 true EP0686821A1 (fr) 1995-12-13
EP0686821B1 EP0686821B1 (fr) 1998-09-16

Family

ID=6519902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105650A Expired - Lifetime EP0686821B1 (fr) 1994-06-06 1995-04-13 Refroidisseur à deux couches de charge

Country Status (12)

Country Link
US (1) US5715687A (fr)
EP (1) EP0686821B1 (fr)
JP (1) JPH07332825A (fr)
KR (1) KR960001692A (fr)
AT (1) ATE171264T1 (fr)
BR (1) BR9502635A (fr)
DE (2) DE4419729A1 (fr)
DK (1) DK0686821T3 (fr)
ES (1) ES2120654T3 (fr)
TR (1) TR28614A (fr)
TW (1) TW330982B (fr)
ZA (1) ZA953373B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10113516A1 (de) * 2001-03-20 2002-09-26 Bmh Claudius Peters Gmbh Verfahren und Vorrichtung zum Behandeln von Schüttgut
DE102018215348A1 (de) * 2018-09-10 2020-03-12 Thyssenkrupp Ag Kühler zum Kühlen von Klinker und Verfahren zum Betreiben eines Kühlers zum Kühlen von Klinker
CN112444132B (zh) * 2019-08-27 2022-08-30 湖北宜飞复合新材料有限公司 一种可提高生产效率的篦式冷却机头罩下料装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097346B (de) * 1956-02-10 1961-01-12 Smidth & Co As F L Verfahren und Vorrichtung zum Kuehlen von klumpigem oder koernigem, aus einem Ofen kommendem Gut, z.B. Zementklinker
DE1303526B (fr) * 1964-09-03 1972-01-13 Polysius Ag

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553427A (fr) *
DE2064032A1 (en) * 1970-12-28 1972-07-06 Peters Ag Claudius Two step cement clinker cooler - with double walled second stage oscillating channel conveyor cooler
US3831291A (en) * 1972-08-16 1974-08-27 Fuller Co Method and apparatus for treatment of particulate material
DE3616630A1 (de) * 1986-05-16 1987-11-19 Krupp Polysius Ag Kuehlvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097346B (de) * 1956-02-10 1961-01-12 Smidth & Co As F L Verfahren und Vorrichtung zum Kuehlen von klumpigem oder koernigem, aus einem Ofen kommendem Gut, z.B. Zementklinker
DE1303526B (fr) * 1964-09-03 1972-01-13 Polysius Ag

Also Published As

Publication number Publication date
KR960001692A (ko) 1996-01-25
TW330982B (en) 1998-05-01
DE4419729A1 (de) 1995-12-07
ES2120654T3 (es) 1998-11-01
ATE171264T1 (de) 1998-10-15
DE59503580D1 (de) 1998-10-22
JPH07332825A (ja) 1995-12-22
US5715687A (en) 1998-02-10
EP0686821B1 (fr) 1998-09-16
DK0686821T3 (da) 1999-06-14
TR28614A (tr) 1996-11-14
ZA953373B (en) 1996-01-11
BR9502635A (pt) 1996-01-09

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