EP0033009A1 - Method and equipment for treating chopped crops - Google Patents

Method and equipment for treating chopped crops Download PDF

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Publication number
EP0033009A1
EP0033009A1 EP80108110A EP80108110A EP0033009A1 EP 0033009 A1 EP0033009 A1 EP 0033009A1 EP 80108110 A EP80108110 A EP 80108110A EP 80108110 A EP80108110 A EP 80108110A EP 0033009 A1 EP0033009 A1 EP 0033009A1
Authority
EP
European Patent Office
Prior art keywords
drum
air
goods
grains
separating section
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.)
Withdrawn
Application number
EP80108110A
Other languages
German (de)
English (en)
French (fr)
Inventor
Odd W. Hielm
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.)
Kockums Construction AB
Original Assignee
Kockums Construction AB
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
Priority claimed from SE8000682A external-priority patent/SE422729B/sv
Priority claimed from SE8003990A external-priority patent/SE421480B/sv
Application filed by Kockums Construction AB filed Critical Kockums Construction AB
Publication of EP0033009A1 publication Critical patent/EP0033009A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/06—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall using revolving drums
    • 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/026—Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral-type inserts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0436—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis comprising multiple stages, e.g. multiple rotating drums subsequently receiving the material to be dried; Provisions for heat recuperation

Definitions

  • the invention relates to a method of treating chopped crops containing a mixture of grain and lighter parts.
  • the invention likewise relates to an equipment for drying, threshing and separating chopped crops, comprising a rotatable drum with a primary drying section and a separating section with a discharge opening for the lighter parts of the threshed crops in the remote end of the separating section, and means for blowing drying and conveying air through the primary drying and separating sections.
  • the installation comprises a drying device consisting of a rotating hot-air drier of the through-flow type for continuous drying of the chopped crops and a conveyor device disposed at the discharge end of the drying device to feed the dried crops to a separating device which comprises a throwing apparatus and a separator housing.
  • the walls and bottom of the separator housing form a plurality of funnel-shaped collecting shafts, separated from one another, in the lower portion of the housing, situated at different distances from the throwing apparatus in the direction of throwing and provided with devices for feeding the material separated into different fractions to one or more devices for further treatment and taking care of the fractions.
  • the latter devices consist of storage silos, preparation devices for producing fodder mixtures and compressing devices for producing cakes, pellets or the like.
  • the object of this known installation is to be able to preserve the large amounts of valuable components included in the crops, which are wasted by conventional harvesting methods, such as the straw, for example, which today is often ploughed in or burnt and which contains both parts which are rich in protein.
  • the parts rich in cellulose consist primarily of straw and stalk portions while the parts rich in protein consist primarily of husks, leaves and parts of grains. The latter part is often called chaff.
  • a disadvantage of the known methods is that the drying in the drying devices must be continued as long as is necessary for the parts which are most difficult to dry. This consists primarily of the straw fraction. But in order that the straw fraction may be sufficiently dried, it is difficult to avoid damaging the valuable grains at the same time. When drying in the known installations, therefore, there is a great risk that the grains may be damaged, particularly if the crop has a high moisture content. This is a very serious disadvantage of the known installation. Another disadvantage is that the installation has a high energy consumption.
  • rotatable drying and separating drums of the kind given in the introduction are previously generally known.
  • a drum is described, for example, is US 2 617 529.
  • the outlet device in the shell of the drum consists, in this case, of an opening in the shell which is normally closed by a cover but which can be opened once for each revolution which the drum rotates, namely when the opening is in the bottom position.
  • This construction has some decisive disadvantages and limitations. As a result of the fact that the cover is opened only once per revolution, the discharge capacity is very small. Admittedly, this could be increased by increasing the number of openings, but then, on the other hand, the construction would become very complicated to guarantee the synchronism between the opening of the cover and the bottom position of the opening.
  • the most decisive disadvantage is that goods which are ready to be discharged must wait up to a whole revolution before the discharge can take place. If the bulk goods consist of crops with grain which should be discharged through the outlet device in the shell of the drum, this waiting for discharge may prove fatal if the temperature in the drum is so high that the grain can be damaged by being heated too long.
  • Another limitation in providing a flap as in US 2 617 529 is that such a construction makes it more difficult to introduce a counter stream of air through the outlet, which stream of air may be desirable to prevent husks or other light parts from accompanying the grain out through the outlet.
  • One object of the invention is to provide a method and an equipment for drying, threshing and separating a crop which contains components of different kinds in such a manner that none of the components is damaged but on the contrary can be taken care of to be utilized in the most suitable manner. More specifically, it is an object to be able to dry and separate chopped crops which contain valuable grains, such as chopped corn, substantially without the grains being damaged during the drying regardless of the moisture content of the crop. Thus it is also an object to be able to treat crops with a very varying moisture content so that the harvest season can be extended over a considerably longer time than is possible with conventional harvest methods.
  • An important object of the invention is to provide a method which is economical with energy. More specifically, the object is to utilize the various hot gases which are produced or obtained in the system in an optimum manner in view of what the different fractions require with regard to gas purity and drying effect.
  • Another object of the invention is to provide an installation in which different types of crop can be treated, involving a high degree of utilization for the components of the installation and a considerably reduced requirement of special machines for different kinds of crops.
  • an object of a developed embodiment of the invention to offer an outlet device for a rotatable drying and separating drum, which renders possible a very rapid discharge of the goods which have been conveyed forwards for discharge to the section in the drum where the outlet device is situated.
  • the object in view is that goods which have been conveyed forwards for discharge to the region in front of the outlet device shall also be discharged immediately so as not to remain in the drum unnecessarily.
  • the outlet device may appropriately be adapted to cooperate with the feed member which quickly feeds the grain or corresponding goods to the region in front of the outlet device.
  • the installation illustrated diagrammatically in Figure 1 comprises three drying devices, namely a device 1 which is an integrated primary drier, threshing mechanism and separating mechanism for chopped cereals, a secondary drier 2 for straw and chaff and a grain drier 3 for the final drying of the grains which are separated in the first device 1.
  • a device 1 which is an integrated primary drier, threshing mechanism and separating mechanism for chopped cereals
  • a secondary drier 2 for straw and chaff
  • a grain drier 3 for the final drying of the grains which are separated in the first device 1.
  • the integrated device 1 which will be described in more detail later with reference to Figures 2-5, can be divided into the following main parts, namely a mixing chamber 4 for drying air, a feed pipe 5 for the crop which is chopped but otherwise untreated to a primary drier 6, a separating section 7 which together with the primary drier also forms a threshing mechanism, and an outlet device 8 for grain between the primary direr 6 and the separating section 7.
  • the primary drier 6 and the separating section 7 have the form of a coherent rotatable drum with a horixontal axis of rotation.
  • a screw conveyor 9 is adapted to feed chopped crops from a container 10 into a feed pipe 5 in the device 1.
  • a belt weighing device is designated 11
  • a screw conveyor is designated 12
  • a lock is designated 13.
  • a so-called outlet box 14 Disposed after the drying device is a so-called outlet box 14 which is connected to an opening 83 in the front end of the separating section 7.
  • a suction fan 15 and a cyclone separator 16 are connected to the outlet box 14.
  • a conveyor 14A connects the outlet box 14 to a feed pipe 19 to the secondary drier 2.
  • a lock 20 is disposed between the conveyor 14A and the secondary drier 2.
  • a mixing chamber 21 for drying air is disposed in the front end of the secondary drier 2.
  • the actual drying section in the device 2 has the form of a rotating, horizontal drying drum 22 and can be of the known type of through-flow drier for hot air.
  • an outlet box 23 with a section fan 24 which is adapted, via a heat exchanger 25 and a cyclone separator 26, to separate small amounts of chaff from the conveying air and combustion gases. Separated chaff is conveyed via a lock 27 to a chaff line BL for the production of fodder cakes or pellets.
  • the cooled waste gases from the cyclone separator 26 are drawn off in a chimney, while air heated in the wastegas heat exchanger 25 is used in the grain drier 3.
  • the main part of the medium-weight parts of the crop which are rich in cellulose, mainly parts of straw collects in the bottom of the separating box 23.
  • a conveyor 28 is adapted to convey this material for further treatment in a straw line HL, where the material is conditioned, for example mixed with liquor and/or molasses for fodder purposes, after which this material is also formed into fodder cakes or pellets. Furthermore, the main part of the chaff is separated in the lower portion 29 of the separating box 23 in a stream of air generated by a fan 30 which conveys separated chaff to a cyclone separator 31, after which the chaff is conveyed to the chaff line BL.
  • the outlet device 8 for grain is disposed in the region of a grain discharge opening 33 running round the shell of the drum at a distance behind a contraction flange 32 between the primary drier 6 and the separating section 7 in the back portion of the separating section 7.
  • the outlet device 8 is connected, via a lock 34, a discharge conduit 35, and a coarse cleaning machine 36, to the grain drier 3.
  • an inlet pipe 37 for fresh air is connected to the outlet device via a damper 38 to regulate the flow of fresh air through the pipe 37 into the outlet device 8 and from there through openings 33 into the separating section 7.
  • the main part of the straw and chaff which has accompanied the grain into the outlet device is separated in the coarse cleaning machine 35. This cleaned portion is conveyed to the feed pipe 19 of the secondary drier.
  • the combustion furnace 17 can be fired with any fuel such as oil, gas, coal, wood and/or with products which are separated in the installation described.
  • a fan 41 is provided to blow combustion gases into the mixing chamber 21 of the secondary drier 2, while a fan for blowing colder fresh air into the mixing chamber 21 is designated 42.
  • the regulating device 44 is in turn adapted to regulate the drying process by acting on a flow regulating valve 45, 46 disposed in each connecting pipe for hot flue gas and colder fresh air respectively.
  • a temperature measuring device 47 is disposed in the primary drier 6 in the device 1 .
  • a regulating device, designated 48 is adapted to be able to regulate the flows into the mixing chamber 4 of hot air and cold air respectively, depending on measurements from the measuring device 47, by acting on a pair of flow regulating valves 49 and 50 in the connections 54, 55 respectively.Telemetric transmission is used for conveying the temperature values from the measuring device 47 to the regulating device 48.
  • the hot air is adapted to be heated by the flue gases from the combustion furnace 17 in a heat exchanger 51 and is blown into the mixing chamber 5 by a fan 52.
  • a cold-air fan is designated 53.
  • the primary drier 6 and the separating section 7 have the form of a coherent rotatable drum with a horizontal axis of rotation.
  • the rotating drum is designated 60 in Figures 2 - 4 and is adapted to be rotated by a motor 61 about the horizontal axis rotation.
  • the drum 60 rests against two pairs of rollers 62 which are supported, via bearing pedestals 63 by a base 64.
  • the primary drier 6 is provided, at the inside of the drum 60, with lifting laminations (not shown) in the form of pieces of plate directed radially inwards.
  • the drum 60 has an opening 33, Figures 1 and 4.
  • the opening 33 consists of a gap between the drying section 6 and the separating section 7.
  • the gap is unbroken which means that the opening 33 extends round the whole periphery of the drum.
  • an annular construction 66 This consists of two angle irons 66A and 66B which have been bent into ring form with the webs of the irons facing one another and with the arms facing away from one another as seen in Figure 4.
  • Disposed between the irons 66A and 66B are a plurality of guide-rail-shaped intermediate members 18, a pair of which are designated by 18A and 18B in Figures 3 and 4.
  • Each intermediate member 18 extends from the outside of the drum 60 to the tip of the right angle of the angle iron. At the same time, each intermediate member 18 extends uniformly backwards in relation to the direction of rotation of the drum 1. The direction of rotation is designated by arrow A, Figure 3.
  • the intermediate members are also somewhat convex as a result of which the construction 66 has an appearance pronounced of an impeller or a water-wheel.
  • the annular construction 66 thus formed is welded to the outside of the drum 60 over the opening 33 and so connects the drying section 6 and the separating section 7.
  • the outlet cover 67 Disposed outside the ring 66 is an outlet cover, generally designated by 67.
  • the purpose of the cover 67 is to shield the opening 33 from the environment and to connect the opening 33 to the discharge pipe 35.
  • the outlet cover 67 comprises a discharge box 68 disposed outside the ring 66 within the sector of a circle which corresponds to the fourth quadrant of the circle with respect to the direction of rotation of the drum 60, Figure 3.
  • the box 68 also covers a small portion of the end of the fourth quadrant of the circle.
  • the box 68 is formed of front and back plates 68A, 68B and a pair of side plates, and the back and front paltes 68A, 68B converge to match the shape of the discharge conduit 35.
  • the covering strip 70 is disposed at a very short distance from the ring 66 so that there is a narrow gap 70A between the covering strip 70 and the two arms 66C and 66D of the ring 66.
  • the covering strip 70 is connected, by its longitudinal edges, to the outer ends of the web on a pair of angle irons 71A and 71B respectively.
  • the angle irons 71A, 71B extend round the first and second quadrants of the circle, Figure 3, as well as the main portion of the third quadrant and their ends are also connected to a pair of portions 71C and 71D of the front and back walls 68A and 68B respectively of the outlet cover 68.
  • the irons 71A and 71B together with extensions 71C and 71D are also connected to one another by a plurality of bolts 71E.
  • the outlet cover 67 thus formed is mounted on the base 64 in a manner not described in the Figures.
  • the discharge box 67 is thus mounted fixed in space while the drum 60 together with the ring 66 is adapted to be able to rotate inside the discharge box 67.
  • a pair of rubber seals 71F are disposed between the angle irons 71A and 66A and between the angle irons 71B and 66B respectively.
  • the separating section 7 is cylindrical and is clad internally with spiral threads 80 consisting of sheet-metal strips, twisted in spiral shape and directed radially inwards and welded to the inside of the drum 60, Figure 5.
  • the threads extend along the whole cylindrical separating section 7, that is to say from the discharge opening 83 to the discharge opening 33.
  • Disposed at a certain distance from each spiral thread 80, calculated with respect to the opening 33 is a helical row of carriers 81 consisting of pins directed radially.
  • the pins 81 are welded to the inside of the drum 60 and are so tightly placed in the individual rows that pieces of straw which are lying crosswise cannot pass or can only do so with difficulty, while grains can pass through easily.
  • Each row thus forms a sort of helical "rake" which can entrain long objects such as pieces of straw but to a considerably lesser extent can entrain objects consisting of finer particles such as grains, when the drum 60 rotates.
  • the chopped crops are discharged from the silo 10 by means of the screw conveyor 9 and weighed on the belt weighing device 11.
  • the discharge from the silo 10 is controlled by means of the regulating equipment 82 so that a relatively even flow of crops is obtained.
  • the crops are fed via the lock 13 and pipe 5 into the primary drier 6 where they meet the hot air flowing through from the mixing chamber 4.
  • the crops are tubled round by the said paddles when the drum 60 is rotated.
  • the paddles lift up the chopped crops in a manner known per se and then let them fall down again into the hot air flowing through which afterwards advances the material forwards towards the constriction 32.
  • the temperature of the air flowing through is measured by the temperature measuring device 47.
  • the temperature of the air flowing through is regulated by means of the device 48 by adjusting the valves 49 and 50 in the pipes 54, 55 for hot air and cold air respectively.
  • the total flow of air is maintained constant, however.
  • the temperature in the primary drier 6 is regulated so that the superficial moisture in the goods is removed to such an extent that the grains can be threshed out while the material advances forwards in the primary drier 6.
  • the grains are thus mainly threshed out.
  • the material receives an increase in speed as a result of the fact that the air speed increases.
  • the air flowing through entrains the lighter parts to a greater extent than the heavier grains, as a result of which a first separating effect is achieved.
  • the threshing then continues in the separating section 7 to the extent that this has not already been completed in the primary drier 6.
  • the material, particularly the straw parts, are lifted up by the pins 81 which form a helical row 76 in front of each spiral thread 80.
  • the entrainment means (the pins 81) entrain primarily the straw while the grains, on the other hand, can pass to a considerable extent between the pins 81.
  • a second separating effect is achieved.
  • the material which is fed up along the walls of the drum 60 by means of the pins 81 has therefore been further impoverished with regard to grains and when the entraining material falls down into the stream of air in the separating section 7, this material is thrown to a greater extent than remaining heavier grains in the direction of the discharge openings 83.
  • a third separating effect is achieved.
  • the grain also tends to accompany the drum up the walls in the direction of rotation to a certain extent. At the same time, however, they fall down by their own weight - a fourth separating effect - and are forced by the spiral conveyors 81 towards the outlet opening 33.
  • the grains therefore accumulate in the part of the drum which corresponds to the fourth quadrant of the circle when the drum is considered in the axial direction and the drum rotates in counter-clockwise direction, Figure 3.
  • the grains which are generally disignated by X in Figure 3 reach the discharge opening 33 in the region in front of the discharge box 68.
  • the intermediate members 18, such as the intermediate member 18C are at first substantially horizontal to be adjusted more in the vertical direction at the end of the discharge box 68, that is to say when the intermediate members approach the front wall 68A.
  • the next following channel 77B is less pronouncedly vertical while the following channel 77C is not so at all. Air flows in the direction of the arrows B through all the channels 77A, 77B and 77C, which are constantly displaced to make room for new intermediate members 18 and new intervening channels.
  • the flow of air thus has an almost pure separating effect in that the air blows away any remaining husks and other lighter particles which have accompanied the grains to the discharge opening 33.
  • the stream of air likewise has a separating effect in the following openings 77B and 77A, but the primary function of these openings is to discharge the grains X which also takes place very effectively because there the openings 77A and 77B are disposed nearly vertically.
  • the total effect is therefore that the predominant proportion of the lighter components, that is to say straw and chaff, is blown out through the discharge openings 83 in the far end of the separating section 7, while the grains are discharged into the outlet box 68 through the openings 33 in counter-current to the air which is continuously blown in through the conduit 37.
  • the grains may describe a reciprocating movement which in certain cases can even be repeated a number of times so that the duration of stay for some of the grains in the separating section 7 cannot be ignored.
  • the temperature in the separating section 7 is kept at such a low level that damage to the grains can be avoided completely.
  • the straw and other components of the crop which passed through the discharge opening 83 into the outlet box 14 are conveyed to the secondary drier 22 by means of the screw conveyor 18 and the pipe 19.
  • Hot air from the air mixer 21 flows through the secondary drier 22.
  • the temperature in the secondary drier is regulated by adapting the flows of hot and cold gases by means of the valves 45 and 46.
  • the combustion gases from the combustion furnace 17 are used as hot air.
  • Warm air from the cyclone separator 16 and/or 26 is used as secondary air for the combustion furnace.
  • a rotatable drum is designated by the numeral 160.
  • the drum 160 corresponds to the drum 60 in Figure 2.
  • a primary drier and a separating section are designated 106 and 107 respectively.
  • the former as in the previous form of embodiment, is provided with lifting laminations 165 in the form of pieces of plate directed radially inwards and possibly scoop-shaped.
  • the separating section 107 consists of four sections 107a, b, c and d. Disposed between the primary drier 106 and the first section 107a is a first contraction flange (orifice plate) 132a.
  • a first line of discharge openings 133a Disposed between the first and second section 107a and 107b respectively, is a first line of discharge openings 133a, which are evenly distributed along the periphery of the drum 160.
  • a second orifice plate 132b Disposed between the second and the third sections 107b and 107c respectively, is a second orifice plate 132b, and disposed between the third section 107c and the last section 107d is a second line of discharge openings 133b like the openings 133a.
  • Outside the discharge openings 133a and 133b is an outlet device provided for each line of openings or alternatively a common outlet device (not shown in the Figure).
  • the discharge openings 133a and 133b, respectively, may also be displaced by a gap embracing the shell of the rotating drum in a manner corresponding to the foregoing embodiment.
  • All the sections in the separating section 107 contain helically wound entrainment means of the same type as the element 80 in Figure 5.
  • the corresponding element is designated 180a, b, c and d with reference to the sections 107a, b, c and d.
  • the elements 180a, b, c and d are only shown diagrammatically.
  • the direction of the thread of the helical elements 180a and 180c in the sections 107a and 107c respectively is such that with normal rotations of the drum 160 they tend to drive material forwards in the direction of the arrows towards the discharge openings 133a and 133b respectively.
  • the helical elements 180b and 180d are threaded with the opposite hand so that with normal rotation of the drum, they drive material backwards, see arrows, towards the openings 133a and 133b.
  • pins 181c and 181d respectively are also disposed in rows 176c and 176d respectively, at a distance from the helical elements 180c and 180d respectively calculated with respect to the second line of discharge openings 133b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP80108110A 1980-01-29 1980-12-22 Method and equipment for treating chopped crops Withdrawn EP0033009A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8000682A SE422729B (sv) 1980-01-29 1980-01-29 Sett och utrustning for behandling av hackat skordegods
SE8000682 1980-01-29
SE8003990A SE421480B (sv) 1980-05-29 1980-05-29 Anordning vid en roterbar tork- och separeringstrumma
SE8003990 1980-05-29

Publications (1)

Publication Number Publication Date
EP0033009A1 true EP0033009A1 (en) 1981-08-05

Family

ID=26657465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80108110A Withdrawn EP0033009A1 (en) 1980-01-29 1980-12-22 Method and equipment for treating chopped crops

Country Status (6)

Country Link
EP (1) EP0033009A1 (da)
AU (1) AU6607781A (da)
BR (1) BR8100299A (da)
DK (1) DK13481A (da)
FI (1) FI804061L (da)
GB (1) GB2068520A (da)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041186A2 (en) * 1980-05-29 1981-12-09 Kockums Construction Aktiebolag Drum for separating bulk goods
FR2528728A1 (fr) * 1982-06-18 1983-12-23 Janich Hans Jurgen Procede d'actionnement d'un appareil de criblage pneumatique et appareil de criblage pour la mise en oeuvre de ce procede
EP0276750A2 (de) * 1987-01-23 1988-08-03 Linnhoff + Thesenfitz Maschinenbau Gmbh Verfahren und Vorrichtung zum Aufbereiten von Schüttgut, insbesondere Strahlgut
CN110652739A (zh) * 2019-11-02 2020-01-07 郑州博大浓缩干燥设备有限公司 高效节能的聚合氯化铝生产用干燥系统
CN114812153A (zh) * 2022-04-28 2022-07-29 康定龙源穗城石膏有限责任公司 一种石膏粉生产用连续式烘干装置
CN114877664A (zh) * 2022-04-26 2022-08-09 咸宁市农业科学院 一种滚筒式谷物烘干机
CN115406215A (zh) * 2022-08-29 2022-11-29 黑龙江京禾农机装备有限公司 智能控制气流式秸秆烘干装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112344684A (zh) * 2020-12-11 2021-02-09 四川省丹丹郫县豆瓣集团股份有限公司 用于豆瓣翻晒的循环式干燥系统及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706371A (en) * 1951-09-10 1955-04-19 Charles F Bishop Grain dryer for combines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706371A (en) * 1951-09-10 1955-04-19 Charles F Bishop Grain dryer for combines

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041186A2 (en) * 1980-05-29 1981-12-09 Kockums Construction Aktiebolag Drum for separating bulk goods
EP0041186A3 (en) * 1980-05-29 1984-05-09 Kockums Construction Aktiebolag Drum for separating bulk goods
FR2528728A1 (fr) * 1982-06-18 1983-12-23 Janich Hans Jurgen Procede d'actionnement d'un appareil de criblage pneumatique et appareil de criblage pour la mise en oeuvre de ce procede
EP0276750A2 (de) * 1987-01-23 1988-08-03 Linnhoff + Thesenfitz Maschinenbau Gmbh Verfahren und Vorrichtung zum Aufbereiten von Schüttgut, insbesondere Strahlgut
EP0276750A3 (en) * 1987-01-23 1990-05-23 Linnhoff + Thesenfitz Maschinenbau Gmbh Method and device for preparing bulk material, in particular abrasive material
CN110652739A (zh) * 2019-11-02 2020-01-07 郑州博大浓缩干燥设备有限公司 高效节能的聚合氯化铝生产用干燥系统
CN110652739B (zh) * 2019-11-02 2024-04-12 郑州博大浓缩干燥设备有限公司 高效节能的聚合氯化铝生产用干燥系统
CN114877664A (zh) * 2022-04-26 2022-08-09 咸宁市农业科学院 一种滚筒式谷物烘干机
CN114812153A (zh) * 2022-04-28 2022-07-29 康定龙源穗城石膏有限责任公司 一种石膏粉生产用连续式烘干装置
CN115406215A (zh) * 2022-08-29 2022-11-29 黑龙江京禾农机装备有限公司 智能控制气流式秸秆烘干装置

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BR8100299A (pt) 1981-08-04
AU6607781A (en) 1981-08-06
GB2068520A (en) 1981-08-12
DK13481A (da) 1981-07-30
FI804061L (fi) 1981-07-30

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