WO2007003733A1 - Rotor a lame pour broyer et broyeur comportant un tel rotor - Google Patents
Rotor a lame pour broyer et broyeur comportant un tel rotor Download PDFInfo
- Publication number
- WO2007003733A1 WO2007003733A1 PCT/FR2006/001355 FR2006001355W WO2007003733A1 WO 2007003733 A1 WO2007003733 A1 WO 2007003733A1 FR 2006001355 W FR2006001355 W FR 2006001355W WO 2007003733 A1 WO2007003733 A1 WO 2007003733A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flange
- blade
- face
- spacing
- main wall
- Prior art date
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
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C18/186—Axially elongated knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
Definitions
- the present invention relates to a rotor for a mill, a mill comprising at least one such rotor, and a blade for equipping a mill rotor.
- a mill 1 comprises a hopper 2 for introducing waste to be milled, opening into a cutting chamber 3. After passing through a sieve, the crushed particles fall in a receiving tray 4 located under the cutting chamber 3, where they are regularly evacuated.
- FIG. 2 Such a rotor of the prior art is shown in FIG. 2.
- the rotor 5 comprises a shaft 6 of axis 7 on which are fixed flanges 8, spaced apart from one another along the axis 7.
- the flanges 8 carry blades 9 whose first end 10 forms a cutting edge and whose second end 11 is located facing a bearing face 12 of a flange 8.
- the first ends 10 of the blades 9 are part of a circle whose the diameter is called "cutting diameter”.
- the blades 9 are fixed on the flanges 8 by means of a plate 13 and screws 14 cooperating with oblong holes made in the blades.
- This cleaning operation is done manually. It is long and often difficult because the particles have generally been compacted, forming a compact and very hard mass.
- this operation can be dangerous for the operator, because during cleaning, he can accidentally turn the rotor and risk cutting with the blades.
- the present invention aims to overcome the disadvantages mentioned above.
- the invention relates to a rotor for a mill, comprising:
- At least one blade mounted on the flange and having a first end forming a cutting edge and a second end facing the support face formed on the flange;
- the rotor further comprises protection means arranged to substantially close the space between the second end of the blade, the bearing face and the clamping face of the flange and in which are accommodated the adjustment means, regardless of the value of said spacing within the range of use.
- This space being closed, the crushed particles can not penetrate and accumulate there.
- the means of protection are provided to enclose this space both in the position of minimum separation, when the blade is new, than in the position of maximum separation, when the blade has been resharpened several times and it is from its last use before being replaced by a new blade, but also in all intermediate positions.
- this space is closed, but it can also have openings of very small dimensions in which the particles can not pass.
- the blade comprises a first face placed against the clamping face of the flange and a second face opposite to the first face
- the protection means associated with each flange comprise a flange which, in position mounted on the rotor, has:
- the flange, the blade and the flange being arranged to allow relative movement of the flange relative to the blade and / or the flange between a first relative position corresponding to the minimum gap and a second relative position corresponding to the maximum gap , the two lateral flanges of the flange remaining adjacent to the second end of the blade and the bearing face of the flange regardless of said relative position.
- adjacent is meant that the elements concerned are either actually in contact (one based on the other), or directly contiguous (one being in the immediate vicinity of the other), in order to allow the creation of a closed space.
- the flange When moving the blade relative to the flange (following a sharpening), the flange can thus remain fixed relative to the flange and slide relative to the blade while still ensuring a covering therewith due to the sufficient height side wings. Conversely, the flange can remain fixed relative to the blade and slide relative to the flange ensuring a recovery with it. Finally, the flange can slide relative to the blade and the flange and ensure a recovery with these two parts.
- the lateral wings protrude substantially perpendicularly from the main wall of the flange, said lateral wings having a lower face located substantially in the same plane as the lower face of the main wall and a height less than the height of the main wall. , so that the flange has, in lateral view, substantially the shape of an L.
- the blade may comprise at least one notch made from its second end and passing through the blade of the first face to the second face, in which are intended to be housed the lateral flanges of the flange, the height of the notch being greater than the difference between the minimum spacing and the maximum spacing between the support face of the flange and the second end of the blade.
- the blade may in particular comprise two disjointed notches each intended to receive a lateral flange of the flange, a notch having a shape complementary to the corresponding flange.
- the width of the flange may be substantially equal to the width of a flange.
- the flange comprises an abutment face located substantially in extension of the second face of the blade and extending from the bearing face opposite the blade, the flange being intended to be arranged so that its main wall bears against said abutment face of the flange and is opposite the blade, and so that the lateral wings are placed on either side of the side faces of the flange and in contact with those ci, the flange being slidable perpendicular to the bearing face along said abutment face.
- the fastening means of the blade on the flange comprise for example a fastener adapted to be engaged in an orifice formed in the main wall of the flange, an oblong slot formed in the blade, and a hole in the clamping face. flange, said orifices and said light being arranged substantially opposite.
- the blade of the rotor may comprise: a first and a second face, the first face being placed against the clamping face of the flange; - An oblong slot for fixing the blade on the flange allowing adjustment of the spacing between the second end of the blade and the bearing face of the flange;
- At least one notch made from its second end and passing through the blade from the first face to the second face, said notch receiving a portion of the protection means arranged to substantially close the space between the second end of the blade, the face support and flange face.
- the invention relates to a mill comprising a cutting chamber in which are intended to be introduced the waste to be milled and a receiving tray of the ground particles, and at least one rotor as previously described.
- Figure 1 is a side view of a mill
- Figure 2 is a perspective view of a crusher rotor of the prior art
- Figure 3 is an exploded perspective view of a mill rotor according to a first embodiment of the invention
- Figure 4 is a perspective view of the rotor of Figure 3, in the mounted state
- Figure 5 is a partial front view of the blade equipping the rotor of Figure 3;
- Figure 6 shows the rotor of Figure 3, seen laterally in an axial direction;
- Figure 7 is a perspective view of a flange for securing the blade to the rotor of Figure 3;
- Figure 8 is a sectional view of the rotor of Figure 3 in a plane transverse to the axis of the rotor, and substantially median to the flange;
- Figure 9 is an enlarged view of detail A of Figure 4.
- Figures 10 and 11 are sectional views along the line BB of Figure 8, showing the position of the blade relative to the rotor, respectively when the blade is new and when it has been re-sharpened, which corresponds to the positions of minimum and maximum spacing;
- Figure 12 is a cross-sectional view of a mill rotor according to a second embodiment of the invention.
- FIG. 13 is a sectional view along the line CC of Figure 12, in the minimum spacing position;
- FIGS. 14, 15 and 16 show details of a mill rotor according to a third embodiment of the invention, respectively in cross section, in section along the line DD of FIG. 14, and seen according to the arrow E of FIG. Figure 14, in the position of minimum spacing; and
- FIGS. 17, 18 and 19 show details of a mill rotor according to a fourth embodiment of the invention, respectively in cross-section, in section along the line FF of FIG. 17, and seen according to the arrow G of FIG. Figure 17, in the position of minimum separation.
- a rotor 20 according to the invention is intended to be placed in the cutting chamber 3 of a mill 1, for example similar to that shown in FIG. 1.
- the invention applies in particular to the grinding of plastics, but can of course be used for other types of waste (wood, etc.).
- the rotor 20 comprises a shaft 21 of axis 22 on which are fixed flanges 23, here three in number, spaced apart from each other along the axis 21.
- the flanges 23 carry blades 24, a first end 25 form a cutting edge and whose second end 26 is located opposite a bearing face 27 of a flange 23.
- the first ends 25 of the blades 24 are part of a circle 28 whose diameter is the diameter of Cutting the rotor 20.
- the gap between the fixed blades and the moving blades is of the order of a few tenths of a millimeter.
- the rotor 20 has three blades 24 arranged at 120 ° from each other, each extending along the axis 21 facing the three flanges 23 and being associated with each of the three flanges 23.
- adjusting means 29 of the spacing e between said second end 26 and said bearing face 27.
- These adjustment means 29 comprise a screw 30 of axis 31 orthogonal to the bearing face 27 and a nut 32 engaged around the screw 30.
- the head of the screw 30 bears on said bearing face 27, the screw 30 being engaged in a tapped hole 33 formed in the blade 24.
- the blade 24 comprises facing each flange 23 an oblong slot 34 situated in the vicinity of the second end 26 and extending orthogonally to the bearing face 27.
- an operator actuates the nut 32 of the adjustment means 29 so that, in the mounted position, the spacing e is such that one obtains the predefined value of the cutting diameter.
- a template can be used to obtain the desired spacing e. Then the blade 24 is disposed perpendicularly to the bearing face 27, a substantially flat first face 35 of the blade coming into contact with a clamping face 36 formed on each flange 23.
- a flange 37 is then put in place against the substantially flat second face 38 of the blade 24, as will be seen later, then a screw 39 is inserted into an orifice 40 of the flange 37, the light 34 of the blade and a hole 41 practiced in the clamping face 36 of the flange 23, to ensure the attachment of the blade 24 on the flange in the appropriate position.
- the orifices 40 and 41 have substantially the same axis 42, and the oblong shape of the slots 34 allows the passage of the screw 39 whatever the value of the spacing e.
- the rotor 20 is of the blade type: the faces 35, 38 of the blades 24 are generally transverse to the rotational movement of the rotor 20, the blades 24 being driven by the clamping faces 36.
- the blade 24 has, front view, a generally rectangular or slightly trapezoidal shape, the lateral edges 43 being inclined relative to the first and second ends 25, 26 of an angle ⁇ of the order of 87 °.
- the blade 24 Opposite each of the flanges 23, the blade 24 comprises a notch 44 made from its second end 26 over a portion of its height, the notch being through the first face 35 to the second face 38 of the blade 24.
- notch 44 has a width IAA substantially corresponding to the width of the flange 23, here about 40 mm, and a height h slightly greater than the difference between the maximum spacing e ma ⁇ and the minimum spacing e m j n . In the embodiment shown, h is about 6 mm.
- the term "height" is perpendicular to the bearing face 27, and the term “width” is parallel to the axis 22 of the rotor 20.
- the oblong slot 34 opens into the slot 44, and is offset laterally relative to the middle of the slot 44, to allow the passage of the adjustment means 29 between the slot 34 and a first lateral edge 45 of the notch 44. .
- the flange 37 comprises a substantially parallelepipedal main wall 46, having a substantially flat bottom face 47 and a beveled upper face 48.
- the term “lower” is used for purposes of simplification, but it is obvious that the flange can take different positions in space, in particular during the rotation of the rotor 20.
- first and second lateral wings 49, 50 From the main wall 46 protrude substantially perpendicularly first and second lateral wings 49, 50, whose length L is substantially equal to the thickness of the blade 24, that is to say at the distance between the first and second second face 35, 38 of the blade 24.
- the lower face 51 of the wings 49, 50 is located substantially in the same plane as the lower face 47 of the main wall 46 of the flange 37.
- the wings 49, 50 have a height H greater than the maximum spacing e ma ⁇ between the second end 26 of the blade 24 and the bearing face 27 of the flange 23.
- H is of the order of 15 mm.
- the width 49 of the first wing 49 is substantially equal to the distance between the second lateral edge 52 of the notch 44 and the oblong slot 34, or about 9 mm.
- the width 50 of the second flange 50 is less than 49, so that the second flange 50 can be housed between the first lateral edge 45 of the notch 44 and the adjustment means 29, as illustrated in the figures.
- £ 49 is of the order of 4 mm.
- the orifice 40 is formed in the main wall 46 of the flange 37, laterally offset to the first flange 49 in order to be substantially facing the light 34 itself offset in the notch 44.
- the main wall 46 comprises a recessed area 53 made from its side from which the lateral wings 49, 50 project. The value of the withdrawal is about 0.5 mm.
- the orifice 40 opens into said recessed zone 53.
- the lower face 47, 51 of the flange 37 in the mounted position, the lower face 47, 51 of the flange 37 always rests on the bearing face 27 of the flange 23.
- the width of the flange 37 is substantially equal to the width of the face of the flange 23. 27, between the two lateral faces 54, 55 of the flange 23.
- the lateral wings 49, 50 are engaged in the notch 44, on either side of the slot 34, in contact respectively with the first edge 45 and the second edge 52 of the notch 44.
- the free end of the wings 49, 50 is in contact with the clamping face 36 of the flange 23. It can also be provided that the flange
- the distance e between the second end 26 of the blade 24 and the bearing face 27 of the flange 23 is minimal (e m j n ), as shown in FIG. 10.
- the upper faces 57 of the lateral wings 49, 50 of the flange 37 are substantially in contact with the face forming the bottom 58 of the notch 44.
- this constructive arrangement can be applied to the case of a rotor 20 of the tangential blade type, wherein the bearing surface 27 of the flanges 23 is substantially radial.
- the flange 37 also has a cavity 61 arranged opposite the blade 24, to accommodate the adjustment means 29.
- the relative positioning of the various components of the rotor 20 is generally similar to what has been described in connection with the first embodiment: the flange 37 rests on the bearing face 27 of the flange 23 and has a width substantially equal to that of the flange 23.
- the third embodiment differs from the second embodiment essentially in that the blade 24 no longer comprises a single but two notches 44 disjoint, spaced laterally from one another.
- Each of the notches 44 receives a lateral flange 49, 50 of the flange 37, and has a shape complementary to the corresponding flange.
- the lumen 34 is closed (that is to say it does not open into a notch) and is arranged between the two notches 44, off-center to allow the passage of the adjustment means 29.
- the wings 49, 50 here have widths M9, 50 substantially identical.
- the blade 24 and the flange 37 are devoid of cavities 60, 61.
- the rotor 20 is of the tangential blade type.
- the flange 23 comprises a stop face 62 located substantially in extension of the second face 38 of the blade 24, in the mounted state, and extending from the bearing face 27, substantially parallel to the clamping face 36, opposite the blade 24.
- the flange 37 is arranged so that its main wall 46 bears against the stop face 62 of the flange 23 and against the second face 38 of the blade 24.
- the distance between the lateral wings 49, 50 of the flange 37 is substantially equal to the width of the flange 23.
- the lateral wings 49, 50 are placed on either side of the lateral faces
- the flange encloses the flange 23.
- the blade 24 it is devoid of notch 44.
- the flange 37 When the gap e increases, the flange 37 is displaced relative to the flange 23.
- the passage between the minimum spacing position and the maximum spacing position corresponds to a sliding of the flange 37 along the stop face 62 perpendicular to the bearing surface 27.
- the operator does not actually slide the flange 37, since it is placed against the blade 24 once the blade 24 itself has been positioned. with the desired distance e.
- the upper faces 57 of the lateral wings remain in contact with the second end 26 of the blade 24.
- the space 59 located between the second end 26 of the blade 24, the bearing face 27 and the clamping face 36 of the flange 23 , and in which are housed the adjustment means 29, is always closed and not accessible to the ground particles.
- this fourth embodiment can be implemented with a blade 24 provided with one or two notches 44 in which the side wings 49, 50 of the flange 37 could be engaged. This would give freedom of movement of the flange 37 both with respect to the blade 24 and with respect to the flange 23.
- the invention provides a decisive improvement in preventing fouling mill rotors, which, in the prior art, undermines the efficiency of grinding and represents a source of risk for the operator. It goes without saying that the invention is not limited to the embodiments described above as examples but that it encompasses all the variants.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2008000292A MX2008000292A (es) | 2005-06-30 | 2006-06-15 | Rotor para triturador, triturador y cuchilla para un rotor para triturador. |
BRPI0613116A BRPI0613116A2 (pt) | 2005-06-30 | 2006-06-15 | rotor para triturador, triturador compreendendo câmara de corte |
JP2008518896A JP2008544841A (ja) | 2005-06-30 | 2006-06-15 | シュレッダロータ、シュレッダ及びシュレッダロータのためのブレード |
EP06778597A EP1907123A1 (fr) | 2005-06-30 | 2006-06-15 | Rotor a lame pour broyer et broyeur comportant un tel rotor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0506722 | 2005-06-30 | ||
FR0506722A FR2887786B1 (fr) | 2005-06-30 | 2005-06-30 | Rotor pour broyeur, broyeur et lame pour un rotor de broyeur |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007003733A1 true WO2007003733A1 (fr) | 2007-01-11 |
Family
ID=35677645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/001355 WO2007003733A1 (fr) | 2005-06-30 | 2006-06-15 | Rotor a lame pour broyer et broyeur comportant un tel rotor |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1907123A1 (fr) |
JP (1) | JP2008544841A (fr) |
BR (1) | BRPI0613116A2 (fr) |
FR (1) | FR2887786B1 (fr) |
MX (1) | MX2008000292A (fr) |
WO (1) | WO2007003733A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103191812A (zh) * | 2013-04-12 | 2013-07-10 | 天佑电器(苏州)有限公司 | 园艺切割工具的切割部件 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9375723B2 (en) * | 2013-04-29 | 2016-06-28 | Vermeer Manufacturing Company | Cutter assembly and adjustable cutter for use in comminuting apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119281A (en) * | 1982-04-30 | 1983-11-16 | De La Rue Syst | Rotor blade adjuster |
US4930710A (en) * | 1988-06-02 | 1990-06-05 | Hans Hench | Rotary cutter, particularly for comminuting plastic material |
US5209278A (en) * | 1992-02-27 | 1993-05-11 | Commerical Knife,Inc. | Drum chipper with knife and knife holder |
US5658101A (en) * | 1992-10-07 | 1997-08-19 | Gebr. Leitz Gmbh & Co. | Milling head |
-
2005
- 2005-06-30 FR FR0506722A patent/FR2887786B1/fr not_active Expired - Fee Related
-
2006
- 2006-06-15 BR BRPI0613116A patent/BRPI0613116A2/pt not_active IP Right Cessation
- 2006-06-15 MX MX2008000292A patent/MX2008000292A/es unknown
- 2006-06-15 EP EP06778597A patent/EP1907123A1/fr not_active Withdrawn
- 2006-06-15 WO PCT/FR2006/001355 patent/WO2007003733A1/fr active Application Filing
- 2006-06-15 JP JP2008518896A patent/JP2008544841A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119281A (en) * | 1982-04-30 | 1983-11-16 | De La Rue Syst | Rotor blade adjuster |
US4930710A (en) * | 1988-06-02 | 1990-06-05 | Hans Hench | Rotary cutter, particularly for comminuting plastic material |
US5209278A (en) * | 1992-02-27 | 1993-05-11 | Commerical Knife,Inc. | Drum chipper with knife and knife holder |
US5658101A (en) * | 1992-10-07 | 1997-08-19 | Gebr. Leitz Gmbh & Co. | Milling head |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103191812A (zh) * | 2013-04-12 | 2013-07-10 | 天佑电器(苏州)有限公司 | 园艺切割工具的切割部件 |
Also Published As
Publication number | Publication date |
---|---|
FR2887786B1 (fr) | 2007-11-16 |
FR2887786A1 (fr) | 2007-01-05 |
BRPI0613116A2 (pt) | 2016-11-29 |
MX2008000292A (es) | 2008-03-24 |
EP1907123A1 (fr) | 2008-04-09 |
JP2008544841A (ja) | 2008-12-11 |
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