CA1145732A - Rotor for beater mill - Google Patents
Rotor for beater millInfo
- Publication number
- CA1145732A CA1145732A CA000349101A CA349101A CA1145732A CA 1145732 A CA1145732 A CA 1145732A CA 000349101 A CA000349101 A CA 000349101A CA 349101 A CA349101 A CA 349101A CA 1145732 A CA1145732 A CA 1145732A
- Authority
- CA
- Canada
- Prior art keywords
- rotor
- beater
- beaters
- hollow tubular
- end plate
- 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
Links
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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Rotary Pumps (AREA)
- Supercharger (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A B S T R A C T
Rotor for beater mill.
Rotor for beater mill with central feed of air and material to be ground. The rotor has two end plates (1 and 2) of which one (1) is connected to the hub (3) of the rotor and the other (2) has a central feed aperture (4). The beaters (5) are sus-pended in sets on shafts (6) which extend between the end plates (1 and 2). Below such a beater set a groove forming body (7) is extending from the end plate (1) to the end plate (2) and surrounding the suspension end of the beaters (5). The body (7) constitutes a shielding of the suspension end of the beaters and acts together with the beaters (5) as fan blades. It may consist of a tube in which the supporting shafts(6) of the beaters (5) are positioned so that the beaters (5) from the shaft (6) protrude out through slots (10) positioned in the body (7).
The supporting shaft (6) rests against the outward facing section of the tube wall, whereby the tube also constitutes a support for the beaters (5). Between the rotor hub (3) and a groove forming body (7) or the feed end plate (2) or both, stays (12,13) tilting in relation to the rotor axis are extending. The stays (12, 13) brace the construction and also act during operation as distributors by distributing the material across the total in-ternal operation width of the rotor.
Rotor for beater mill.
Rotor for beater mill with central feed of air and material to be ground. The rotor has two end plates (1 and 2) of which one (1) is connected to the hub (3) of the rotor and the other (2) has a central feed aperture (4). The beaters (5) are sus-pended in sets on shafts (6) which extend between the end plates (1 and 2). Below such a beater set a groove forming body (7) is extending from the end plate (1) to the end plate (2) and surrounding the suspension end of the beaters (5). The body (7) constitutes a shielding of the suspension end of the beaters and acts together with the beaters (5) as fan blades. It may consist of a tube in which the supporting shafts(6) of the beaters (5) are positioned so that the beaters (5) from the shaft (6) protrude out through slots (10) positioned in the body (7).
The supporting shaft (6) rests against the outward facing section of the tube wall, whereby the tube also constitutes a support for the beaters (5). Between the rotor hub (3) and a groove forming body (7) or the feed end plate (2) or both, stays (12,13) tilting in relation to the rotor axis are extending. The stays (12, 13) brace the construction and also act during operation as distributors by distributing the material across the total in-ternal operation width of the rotor.
Description
The invention relates to a rotor for a beater mill with central feed of air and material to be ground, and in which the rotor on its feed side has a ring-shaped end plate which defines the feed aperture of the rotor and on its opposite side has an end plate the centre of which is connected with the rotor hub and where the rotor beaters in the proximity of the perifery of the end plates are sus-pended set by set on shafts which are parallel to the rotor axis and extend from one end plate to the other.
An object of an aspect of the invention is to provide a rotor of the said type which is characterized by a parti-cularly efficient uniform distribution of feed of air and material over the total working width of the rotor while at the same time there is produced a strong ventilation effect for the transport of the material through the rotor and past the beaters and further on outwards through the mill screen surrounding the rotor.
According to an aspect of the invention, this purpose is achieved by having for each beater set a groove forming body which is placed at a distance from the suspension of the beaters between this suspension and the rotor axis in its longitudinal direction and spanning from one end plate to the other, the said groove forming body with its groove aperture limiting edges ending in the area sideways to the suspension of the beaters.
During operation each groove forming body together with the beaters in the relevant beater set will act as a ventilator body which is able to produce the air flow necessary to feed the material through the rotor and the screen, while at the same time the groove forming body forms a protective guard for the suspension of the beaters and ; subsequently reduces wear.
According to an aspect of the invention the groove forming body can be made large enough to surround the sus-pension end of the beaters, as the width of the grooveaperture is larger than the diameter of the suspension end of the beaters. This will achieve a particularly good re-~;~ direction of the air and a particularly effective screening.
: , According to an aspect of the invention, the grooveforming body may consist of a tube, the wall of which having a number of transverse slots corresponding to the number of beaters and through which the beaters can protrude and through which tube the supporting shaft of the beaters extends and is supported against the outward facing section of the tube wall and in which the bottom edges of the slots con-stitute the limiting edges of the groove aperture. This embodiment provides a simple and robust construction in which the supporting shaft, and thereby the beaters, are held safely in position during operation. The groove forming body is thexeby also acting as a support for the beaters.
The groove forming body may be connected to the end plates of the rotor by its ends being inserted in the end plates.
In a preferred embodiment according to an aspect of the invention, the tubular groove forming body may at its ends be passed through the end plates and be open ended.
This achieves that the inside of the body is accessible from its ends, so that the supporting shaft is easy to insert and extract.
According to an aspect of the invention the beaters may be so journaled on the supporting shaft that this may be transversely offset in relation to the beaters. This enables an easy replacement of the beaters and the shaft, as the shaft may then be extracted while the beaters are retained by the slots in the groove forming body and so fall into the body when the shaft is removed.
According to an aspect of the invention a removable closing cap may be provided for the open ends of the tube, this cap being not only a closing device but also forming a holding device for the ends of the supporting shaft.
If the beaters of each set have to be mutually offset in the longitudinal direction of the supporting shafts, then, according to the invention, this may be achieved by positioning the slots in the tubes in accordance with the desired offset positioning of the beaters.
114573~
2a According to an aspect of the invention the groove forming body may be positioned at such a distance from the rotor axis that it forms a part of the limitation of the rotor feed aperture. Particularly steady feed flow conditions are thereby achieved.
Particularly advantageous embodiments may be provided if the rotor has a hub protruding a little way into the rotor as, according to the invention, a stay may extend from the hub to each groove forming body or to the feed end plate or to both, this stay being tilted in relation to the rotor axis. Then these stays do not only serve as bracing for the rotor as they support the groove forming body or end plate against the hub, but during operation they will also assist in a particularly good distribution of the material drawn into the rotor while , U4573Z
at the same time they may act as a kind of fan blades. By giving, according to the invention, two neighbouring stays different tilts these effects may be further increased.
One embodiment which is particularly suitable for ~arge rotors is characterized according to the inven~ion by the stays being alternately connected with a groove forming body and with the feed end plate. This achieves both the said beneficial effect and a good total bracing of the rotor.
According to an aspect of the invention the stays preferably have a substantially circular-cylindrical cross-section. As a result, the material which on its way through the rotor comes into contact with the stays will, in the majority, hit these at angles that are different from 90.
This means that the stays will act substantially as dis-tributors while the grinding is substantially carried outby the material being hit by the beaters. This creates good conditions for a particularly uniform grinding.
According to an aspect of the invention both the groove forming body and the stays may be coated with a wear-resistant material.
An aspect of the invention is as follows:
A beater mill rotor having a central axis and a centralfeed for air and for material to be ground comprising:
a first ring-shaped end plate defining a feed aperture for air and material; a second circular end plate being dis-posed parallel to and opposite the first end plate and said second end plate carrying a centrally disposed hub; a mul-tiplicity of beater means being evenly circumferentially spaced around the outer edges of and between said end plates, said beater means being suspended between said end ; plates in sets on shafts parallel to the rotor axis, and said shafts extending between said end plates; said beater means sets each having inner ends and outer ends, said inner ends having holes through which said shafts pass and from which shafts said beater means are suspended and said beater means sets outer ends are disposed radially outwardly - . .
- .. ~
~ , ' - ,' : , ~45732 -3a-from said rotor axis; means for operably connecting said beater means sets to said rotor comprising hollow tubular bodies disposed parallel to said rotor axis and extending between and connected to said end plates; said hollow tubular body having a multiplicity of evenly distributed slots along its length radially outward from the rotor axis corresponding to the number of beaters, said slots forming apertures extending at right angles to the axis of the hollow tubular body, said slots having bottom edges which constitute limiting edges of said apertures, there being formed between said slots within the hollow tubular body an outward facing wall section of the hollow tubular body, said beaters protruding radially outward through said slots and forming said beater means sets; the shafts from which said beater means are suspended extend through said hollow tubular body and are supported against the outward facing wall section of the hollow tubular body; the inner ends of said beater sets and said shafts each being surrounded by and coincident with said hollow tubular bodies; and said hollow tubular bodies having substantially cylindrically curved outer surfaces.
One embodiment of a rotor in accorance with the invention will be described hereafter with reference to the accompanying drawing in which Fig. 1 shows the rotor viewed from the feed side and partly in cross-section;
Fig. 2 the same viewed in section according to the line II - II in Fig. l; and Fig. 3 a section according to the line III - III in Fig. 1.
The rotor shown has two end plates 1 and 2, of which one ~1) in the middle is connected with the rotor hub 3, while the other (2) is ring-shaped and limits the rotor feed aperture 4 for air and material to be ground. In the embodi-ment shown the rotor has four sets of beaters 5, which are ~r /'~1 ~4S~3Z
-3b-suspended close to the periphery of the end plates 1 and 2 on shafts 6 extending parallel to the rotor shaft from one - end plate to the other.
At a distance towards the rotor shaft from the 5US-pensions of the beaters 5 and under each set of beaters, i.e., between the beater suspension and the rotor shaft, a groove forming body 7 extends from end plate 1 to end plate 2 paral-lel to the rotor shaft and as shown in section at the top in Fig. 1, with its groove aperture 8 limiting eages 9 ends in the area sideways to the suspension ends of the beaters. In the embodiment shown the body 7 has a circular-cylindrical cross-section and surrounds : .
~ . r .
the sus~ension ends ol` the beaters 5 over a distance correspon-din~ to the arc of an an~le of' about ~10 . 'I`he r)Lane of the limitin~ ed~es 9 of the ~roove aperture is just inside the support-in~r s~laf'-t ~ o-f the beaters. The section also shows that the width of t~le ~-xoove a~er-tuxe 8 is so rnuch lar~;er -than the trans-verse measurernent ol~ the suspension end ol the beaters 5 tha-t the necessary moveability of' the beaters 5 duxin~ operation is ensured.
In the embodiment shown the ~roove forrnin~ body 7 consists oI' a tube in the wall of which there are a number oI'-transverse slots 1~ alon~ the len~th of the tube correspondin~ -to the number of' beaters 5 and throu~h which the beaters 5 protrude. The supportin~r shaft ~ of -the beaters extends throu~h the tube and rests a~ainst the outward facin~ section of the tube wall. The bottom ed~es of the slotslO constitute the limitin~ ed~es of the ~roove aperture 8.
The tube 7 is fastened to the end plates 1 and 2 by its ends bein~ passed throu~h the end plates and fastened to these.
The tube 7 is open in both ends. In each end a reMovable closinr cap 11 is inserted.
The su~portin~ shaft 6 is dis~laceably retained in the tube 7 partly by means of the closin~ caps 11 ~nd partly by means of the supportin~ ribs 11a. The beaters 5 are loosely journaled on the supr)ortin~ shaf't 6, enablin~ this to be dis~laced trans-versely to -the beaters. When the beaters 5 or the shaf't ~ or both have to be replaced, the shaI't can then he pul:led out of the tube 7 throu~h one of its ends.
By a comparison between fi~. 2 and fi~. 3 it wi~l be seen that the slots 10 in two nei~hbourin~ tubes 7 a3 viewed in -their lon~itudinal direction are off'set in -their position from tube to tube by the width of a beater. This mcans tha-t the beaters from tube to tube are rnu-tually offset in the lon~itudinal di-rection of' the ~u~portin~ shaf-ts.
In the embodiment shown, the ~roove formin~ body 7 is posi-tioned close to the i'eed aperture 4. An altexnative arran~ement may be that a part of'the body 7 directly cons-titutes a ~art of the limitation of the a~erture.
The hub 3 is substantially cylindrical and extends a little way intc~ the rotor. To the hub 3 arefastened stays 12 and 13, of which the stays 12 extend 1(,wards the bo~ies7and brace -these, while the stays 13 extend tow~lds the end ~late ~ and brace this.
`` '; 11~S73Z
fn the embodiment shown with four groove I'ormin~ bodi.es '/, there are four st~.lys 1 L~ ~ each extending froln -the hub ~ to its body, and f'our stays 13, each of which is placed between two stays 12.
All stays are tilted in relation to the rotor ~xis and, as shown, two nei~hbour stays have dif'f'erent an~Sles of ti'Lt, as the an~le f'orMed by the stays 1.3 wi-th the ro-tor shaft is more acute than that formed by the s-tays 12 and the rotor axis ~11 stays have a substantially circular-cylindrical cross-section. However,.
they may also have a polygonal cross-section.
The ~Sroove forrning body 7 and the stays 1? and 1~ may be coated in a way not shown with a wear-resistant material.
The embodiment shown is intended f'or rotors havi.n~S a con-siderable width of operation. On smaller ro~tors with less opera-tional width it may be suf'f'icient to use only stays 12 or 13.
During operation of the rotor -the ~roove forlnin~S bodies 7 ~ill act to~ether with the beaters 5 as eddy-f'ormin~ fan blades, w.hile the stays 12 and 13 wil.l also have a certai.n fan effect.
Tne stays 12 and 13 will also act as distributors by distributin~
the arrivin~ materialt'lr~gn~hte entire operation width of the rotor, af-ter which the material will be ~Sround by means of the beaters 5.
An object of an aspect of the invention is to provide a rotor of the said type which is characterized by a parti-cularly efficient uniform distribution of feed of air and material over the total working width of the rotor while at the same time there is produced a strong ventilation effect for the transport of the material through the rotor and past the beaters and further on outwards through the mill screen surrounding the rotor.
According to an aspect of the invention, this purpose is achieved by having for each beater set a groove forming body which is placed at a distance from the suspension of the beaters between this suspension and the rotor axis in its longitudinal direction and spanning from one end plate to the other, the said groove forming body with its groove aperture limiting edges ending in the area sideways to the suspension of the beaters.
During operation each groove forming body together with the beaters in the relevant beater set will act as a ventilator body which is able to produce the air flow necessary to feed the material through the rotor and the screen, while at the same time the groove forming body forms a protective guard for the suspension of the beaters and ; subsequently reduces wear.
According to an aspect of the invention the groove forming body can be made large enough to surround the sus-pension end of the beaters, as the width of the grooveaperture is larger than the diameter of the suspension end of the beaters. This will achieve a particularly good re-~;~ direction of the air and a particularly effective screening.
: , According to an aspect of the invention, the grooveforming body may consist of a tube, the wall of which having a number of transverse slots corresponding to the number of beaters and through which the beaters can protrude and through which tube the supporting shaft of the beaters extends and is supported against the outward facing section of the tube wall and in which the bottom edges of the slots con-stitute the limiting edges of the groove aperture. This embodiment provides a simple and robust construction in which the supporting shaft, and thereby the beaters, are held safely in position during operation. The groove forming body is thexeby also acting as a support for the beaters.
The groove forming body may be connected to the end plates of the rotor by its ends being inserted in the end plates.
In a preferred embodiment according to an aspect of the invention, the tubular groove forming body may at its ends be passed through the end plates and be open ended.
This achieves that the inside of the body is accessible from its ends, so that the supporting shaft is easy to insert and extract.
According to an aspect of the invention the beaters may be so journaled on the supporting shaft that this may be transversely offset in relation to the beaters. This enables an easy replacement of the beaters and the shaft, as the shaft may then be extracted while the beaters are retained by the slots in the groove forming body and so fall into the body when the shaft is removed.
According to an aspect of the invention a removable closing cap may be provided for the open ends of the tube, this cap being not only a closing device but also forming a holding device for the ends of the supporting shaft.
If the beaters of each set have to be mutually offset in the longitudinal direction of the supporting shafts, then, according to the invention, this may be achieved by positioning the slots in the tubes in accordance with the desired offset positioning of the beaters.
114573~
2a According to an aspect of the invention the groove forming body may be positioned at such a distance from the rotor axis that it forms a part of the limitation of the rotor feed aperture. Particularly steady feed flow conditions are thereby achieved.
Particularly advantageous embodiments may be provided if the rotor has a hub protruding a little way into the rotor as, according to the invention, a stay may extend from the hub to each groove forming body or to the feed end plate or to both, this stay being tilted in relation to the rotor axis. Then these stays do not only serve as bracing for the rotor as they support the groove forming body or end plate against the hub, but during operation they will also assist in a particularly good distribution of the material drawn into the rotor while , U4573Z
at the same time they may act as a kind of fan blades. By giving, according to the invention, two neighbouring stays different tilts these effects may be further increased.
One embodiment which is particularly suitable for ~arge rotors is characterized according to the inven~ion by the stays being alternately connected with a groove forming body and with the feed end plate. This achieves both the said beneficial effect and a good total bracing of the rotor.
According to an aspect of the invention the stays preferably have a substantially circular-cylindrical cross-section. As a result, the material which on its way through the rotor comes into contact with the stays will, in the majority, hit these at angles that are different from 90.
This means that the stays will act substantially as dis-tributors while the grinding is substantially carried outby the material being hit by the beaters. This creates good conditions for a particularly uniform grinding.
According to an aspect of the invention both the groove forming body and the stays may be coated with a wear-resistant material.
An aspect of the invention is as follows:
A beater mill rotor having a central axis and a centralfeed for air and for material to be ground comprising:
a first ring-shaped end plate defining a feed aperture for air and material; a second circular end plate being dis-posed parallel to and opposite the first end plate and said second end plate carrying a centrally disposed hub; a mul-tiplicity of beater means being evenly circumferentially spaced around the outer edges of and between said end plates, said beater means being suspended between said end ; plates in sets on shafts parallel to the rotor axis, and said shafts extending between said end plates; said beater means sets each having inner ends and outer ends, said inner ends having holes through which said shafts pass and from which shafts said beater means are suspended and said beater means sets outer ends are disposed radially outwardly - . .
- .. ~
~ , ' - ,' : , ~45732 -3a-from said rotor axis; means for operably connecting said beater means sets to said rotor comprising hollow tubular bodies disposed parallel to said rotor axis and extending between and connected to said end plates; said hollow tubular body having a multiplicity of evenly distributed slots along its length radially outward from the rotor axis corresponding to the number of beaters, said slots forming apertures extending at right angles to the axis of the hollow tubular body, said slots having bottom edges which constitute limiting edges of said apertures, there being formed between said slots within the hollow tubular body an outward facing wall section of the hollow tubular body, said beaters protruding radially outward through said slots and forming said beater means sets; the shafts from which said beater means are suspended extend through said hollow tubular body and are supported against the outward facing wall section of the hollow tubular body; the inner ends of said beater sets and said shafts each being surrounded by and coincident with said hollow tubular bodies; and said hollow tubular bodies having substantially cylindrically curved outer surfaces.
One embodiment of a rotor in accorance with the invention will be described hereafter with reference to the accompanying drawing in which Fig. 1 shows the rotor viewed from the feed side and partly in cross-section;
Fig. 2 the same viewed in section according to the line II - II in Fig. l; and Fig. 3 a section according to the line III - III in Fig. 1.
The rotor shown has two end plates 1 and 2, of which one ~1) in the middle is connected with the rotor hub 3, while the other (2) is ring-shaped and limits the rotor feed aperture 4 for air and material to be ground. In the embodi-ment shown the rotor has four sets of beaters 5, which are ~r /'~1 ~4S~3Z
-3b-suspended close to the periphery of the end plates 1 and 2 on shafts 6 extending parallel to the rotor shaft from one - end plate to the other.
At a distance towards the rotor shaft from the 5US-pensions of the beaters 5 and under each set of beaters, i.e., between the beater suspension and the rotor shaft, a groove forming body 7 extends from end plate 1 to end plate 2 paral-lel to the rotor shaft and as shown in section at the top in Fig. 1, with its groove aperture 8 limiting eages 9 ends in the area sideways to the suspension ends of the beaters. In the embodiment shown the body 7 has a circular-cylindrical cross-section and surrounds : .
~ . r .
the sus~ension ends ol` the beaters 5 over a distance correspon-din~ to the arc of an an~le of' about ~10 . 'I`he r)Lane of the limitin~ ed~es 9 of the ~roove aperture is just inside the support-in~r s~laf'-t ~ o-f the beaters. The section also shows that the width of t~le ~-xoove a~er-tuxe 8 is so rnuch lar~;er -than the trans-verse measurernent ol~ the suspension end ol the beaters 5 tha-t the necessary moveability of' the beaters 5 duxin~ operation is ensured.
In the embodiment shown the ~roove forrnin~ body 7 consists oI' a tube in the wall of which there are a number oI'-transverse slots 1~ alon~ the len~th of the tube correspondin~ -to the number of' beaters 5 and throu~h which the beaters 5 protrude. The supportin~r shaft ~ of -the beaters extends throu~h the tube and rests a~ainst the outward facin~ section of the tube wall. The bottom ed~es of the slotslO constitute the limitin~ ed~es of the ~roove aperture 8.
The tube 7 is fastened to the end plates 1 and 2 by its ends bein~ passed throu~h the end plates and fastened to these.
The tube 7 is open in both ends. In each end a reMovable closinr cap 11 is inserted.
The su~portin~ shaft 6 is dis~laceably retained in the tube 7 partly by means of the closin~ caps 11 ~nd partly by means of the supportin~ ribs 11a. The beaters 5 are loosely journaled on the supr)ortin~ shaf't 6, enablin~ this to be dis~laced trans-versely to -the beaters. When the beaters 5 or the shaf't ~ or both have to be replaced, the shaI't can then he pul:led out of the tube 7 throu~h one of its ends.
By a comparison between fi~. 2 and fi~. 3 it wi~l be seen that the slots 10 in two nei~hbourin~ tubes 7 a3 viewed in -their lon~itudinal direction are off'set in -their position from tube to tube by the width of a beater. This mcans tha-t the beaters from tube to tube are rnu-tually offset in the lon~itudinal di-rection of' the ~u~portin~ shaf-ts.
In the embodiment shown, the ~roove formin~ body 7 is posi-tioned close to the i'eed aperture 4. An altexnative arran~ement may be that a part of'the body 7 directly cons-titutes a ~art of the limitation of the a~erture.
The hub 3 is substantially cylindrical and extends a little way intc~ the rotor. To the hub 3 arefastened stays 12 and 13, of which the stays 12 extend 1(,wards the bo~ies7and brace -these, while the stays 13 extend tow~lds the end ~late ~ and brace this.
`` '; 11~S73Z
fn the embodiment shown with four groove I'ormin~ bodi.es '/, there are four st~.lys 1 L~ ~ each extending froln -the hub ~ to its body, and f'our stays 13, each of which is placed between two stays 12.
All stays are tilted in relation to the rotor ~xis and, as shown, two nei~hbour stays have dif'f'erent an~Sles of ti'Lt, as the an~le f'orMed by the stays 1.3 wi-th the ro-tor shaft is more acute than that formed by the s-tays 12 and the rotor axis ~11 stays have a substantially circular-cylindrical cross-section. However,.
they may also have a polygonal cross-section.
The ~Sroove forrning body 7 and the stays 1? and 1~ may be coated in a way not shown with a wear-resistant material.
The embodiment shown is intended f'or rotors havi.n~S a con-siderable width of operation. On smaller ro~tors with less opera-tional width it may be suf'f'icient to use only stays 12 or 13.
During operation of the rotor -the ~roove forlnin~S bodies 7 ~ill act to~ether with the beaters 5 as eddy-f'ormin~ fan blades, w.hile the stays 12 and 13 wil.l also have a certai.n fan effect.
Tne stays 12 and 13 will also act as distributors by distributin~
the arrivin~ materialt'lr~gn~hte entire operation width of the rotor, af-ter which the material will be ~Sround by means of the beaters 5.
Claims (6)
1. A beater mill rotor having a central axis and a central feed for air and for material to be ground comprising:
a first ring-shaped end plate defining a feed aperature for air and material, a second circular end plate being disposed parallel to and opposite the first end plate and said second end plate carrying a centrally disposed hub; a multiplicity of beater means being evenly circumferentially spaced around the outer edges of and between said end plates, said beater means being suspended between said end plates in sets on shafts parallel to the rotor axis, and said shafts extending between said end plates; said beater means sets each having inner ends and outer ends, said inner ends having holes through which said shafts pass and from which shafts said beater means are suspended and said beater means sets outer ends are disposed radially outwardly from said rotor axis; means for operably connecting said beater means sets to said rotor comprising hollow tubular bodies disposed parallel to said rotor axis and extending between and connected to said end plates; said hollow tubular body having a multiplicity of evenly distributed slots along its length radially outward from the rotor axis corresponding to the number of beaters, said slots forming apertures extending at right angles to the axis of the hollow tubular body, said slots having bottom edges which constitute limiting edges of said apertures, there being formed between said slots within the hollow tubular body an outward facing wall section of the hollow tubular body, said beaters protruding radially outward through said slots and forming said beater means sets; the shafts from which said beater means are suspended extend through said hollow tubular body and are supported against the outward facing wall section of the hollow tubular body; the inner ends of said beater sets and said shafts each being surrounded by and coincident with said hollow tubular bodies; and said hollow tubular bodies having substantially cylindrically curved outer surfaces.
a first ring-shaped end plate defining a feed aperature for air and material, a second circular end plate being disposed parallel to and opposite the first end plate and said second end plate carrying a centrally disposed hub; a multiplicity of beater means being evenly circumferentially spaced around the outer edges of and between said end plates, said beater means being suspended between said end plates in sets on shafts parallel to the rotor axis, and said shafts extending between said end plates; said beater means sets each having inner ends and outer ends, said inner ends having holes through which said shafts pass and from which shafts said beater means are suspended and said beater means sets outer ends are disposed radially outwardly from said rotor axis; means for operably connecting said beater means sets to said rotor comprising hollow tubular bodies disposed parallel to said rotor axis and extending between and connected to said end plates; said hollow tubular body having a multiplicity of evenly distributed slots along its length radially outward from the rotor axis corresponding to the number of beaters, said slots forming apertures extending at right angles to the axis of the hollow tubular body, said slots having bottom edges which constitute limiting edges of said apertures, there being formed between said slots within the hollow tubular body an outward facing wall section of the hollow tubular body, said beaters protruding radially outward through said slots and forming said beater means sets; the shafts from which said beater means are suspended extend through said hollow tubular body and are supported against the outward facing wall section of the hollow tubular body; the inner ends of said beater sets and said shafts each being surrounded by and coincident with said hollow tubular bodies; and said hollow tubular bodies having substantially cylindrically curved outer surfaces.
2. The beater mill rotor of claim 1 wherein said beater means sets are mutually offset in the longitudinal direction of the shafts and the slots in said tubular bodies are positioned in accordance with the desired offset position of the beater means sets.
3. The beater mill rotor of claim 1 wherein said hub protrudes a short distance into the rotor and there are provided bracing stays which extend obliquely relative to the rotor axis from said hub to each of the tubular bodies and to the first end plate.
4. The beater mill rotor of claim 3 wherein the bracing stays that extend obliquely between said hub and said hollow tubular bodies and the bracing stays that extend between said hub and said first end plate form different angles relative to the rotor axis.
5. The beater mill rotor of claim 4 wherein there are bracing stays extending from said hub alternately to the hollow tubular bodies and to said first end plate.
6. The beater mill rotor of claim 3 wherein said hollow tubular bodies and said bracing stays each have a substan-tially cylindrical cross-section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK1377/79 | 1979-04-03 | ||
| DK137779A DK143385C (en) | 1979-04-03 | 1979-04-03 | ROTOR FOR BATTERY MILL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1145732A true CA1145732A (en) | 1983-05-03 |
Family
ID=8104197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000349101A Expired CA1145732A (en) | 1979-04-03 | 1980-04-02 | Rotor for beater mill |
Country Status (15)
| Country | Link |
|---|---|
| AT (1) | AT367655B (en) |
| BE (1) | BE882605A (en) |
| CA (1) | CA1145732A (en) |
| CH (1) | CH645554A5 (en) |
| DE (1) | DE3011427A1 (en) |
| DK (1) | DK143385C (en) |
| FI (1) | FI801014A (en) |
| FR (1) | FR2452970A1 (en) |
| GB (1) | GB2047120B (en) |
| GR (1) | GR67743B (en) |
| IT (1) | IT8048321A0 (en) |
| LU (1) | LU82299A1 (en) |
| NL (1) | NL8001957A (en) |
| NO (1) | NO151028C (en) |
| SE (1) | SE8002454L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3438321C1 (en) * | 1984-10-19 | 1985-12-12 | Hazemag Dr. E. Andreas GmbH & Co, 4400 Münster | Rotor for racket mills |
| DD265083A1 (en) * | 1987-09-29 | 1989-02-22 | Muehlenbau Dresden Veb | RECEIVING BOLTS FOR HAMMER BULB |
| US4907750A (en) * | 1988-03-09 | 1990-03-13 | Prater Industries, Inc. | Hammermill |
| AU2020218376A1 (en) * | 2019-02-05 | 2021-08-26 | Seed Terminator Holdings PTY LTD | Impact processing system and a machine and a method of improving nut or fruit orchard hygiene |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE906529C (en) * | 1952-02-20 | 1954-04-05 | Alpine Aktien Ges Eisengiesser | Bearing seal |
| LU75315A1 (en) * | 1975-07-11 | 1977-02-24 |
-
1979
- 1979-04-03 DK DK137779A patent/DK143385C/en active
-
1980
- 1980-03-25 DE DE19803011427 patent/DE3011427A1/en not_active Withdrawn
- 1980-03-25 LU LU82299A patent/LU82299A1/en unknown
- 1980-03-26 CH CH237080A patent/CH645554A5/en not_active IP Right Cessation
- 1980-03-27 GR GR61535A patent/GR67743B/el unknown
- 1980-03-31 SE SE8002454A patent/SE8002454L/en not_active Application Discontinuation
- 1980-04-01 NO NO800970A patent/NO151028C/en unknown
- 1980-04-01 AT AT0177980A patent/AT367655B/en not_active IP Right Cessation
- 1980-04-01 FI FI801014A patent/FI801014A/en not_active Application Discontinuation
- 1980-04-02 BE BE0/200095A patent/BE882605A/en not_active IP Right Cessation
- 1980-04-02 IT IT8048321A patent/IT8048321A0/en unknown
- 1980-04-02 NL NL8001957A patent/NL8001957A/en not_active Application Discontinuation
- 1980-04-02 FR FR8007430A patent/FR2452970A1/en not_active Withdrawn
- 1980-04-02 CA CA000349101A patent/CA1145732A/en not_active Expired
- 1980-04-03 GB GB8011328A patent/GB2047120B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GR67743B (en) | 1981-09-16 |
| GB2047120A (en) | 1980-11-26 |
| DK143385B (en) | 1981-08-17 |
| BE882605A (en) | 1980-07-31 |
| NO151028C (en) | 1985-01-30 |
| DK137779A (en) | 1980-10-04 |
| GB2047120B (en) | 1983-09-14 |
| DE3011427A1 (en) | 1981-03-26 |
| NL8001957A (en) | 1980-10-07 |
| IT8048321A0 (en) | 1980-04-02 |
| SE8002454L (en) | 1980-10-04 |
| FR2452970A1 (en) | 1980-10-31 |
| FI801014A (en) | 1980-10-04 |
| DK143385C (en) | 1981-12-14 |
| LU82299A1 (en) | 1980-07-01 |
| ATA177980A (en) | 1981-12-15 |
| CH645554A5 (en) | 1984-10-15 |
| NO800970L (en) | 1980-10-06 |
| NO151028B (en) | 1984-10-22 |
| AT367655B (en) | 1982-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |