CA1088450A - Conveyor belt cleaning device - Google Patents
Conveyor belt cleaning deviceInfo
- Publication number
- CA1088450A CA1088450A CA274,857A CA274857A CA1088450A CA 1088450 A CA1088450 A CA 1088450A CA 274857 A CA274857 A CA 274857A CA 1088450 A CA1088450 A CA 1088450A
- Authority
- CA
- Canada
- Prior art keywords
- pulley
- belt
- shaft
- endless conveyor
- flights
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/20—Cleaning devices comprising screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Belt Conveyors (AREA)
- Belt Conveyors (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A pulley is provided which presents a leading edge to the belt of a conveyor and has an area directed inwardly for driving dislodged particulate material to an end of the pulley. The pulley for an endless belt conveyor comprises a shaft and a flight wound spirally around the shaft with the flight including an outwardly directed leading edge for engagement with the belt and an inwardly directed surface portion for driving the dislodged material towards an end of the pulley as aforesaid. The invention also includes and endless conveyor comprising a first and second pulley about which an endless conveyor belt passes. The first pulley consists of a flighted rotatable element adapted in use to remove particulate material from the inside face of the belt. Preferably the device is located at a position where the direction of travel of the belt turns through approximately 180°. In this case the device itself will form one of the outer pulleys over which the belt of an end-less belt conveyor passes.
A pulley is provided which presents a leading edge to the belt of a conveyor and has an area directed inwardly for driving dislodged particulate material to an end of the pulley. The pulley for an endless belt conveyor comprises a shaft and a flight wound spirally around the shaft with the flight including an outwardly directed leading edge for engagement with the belt and an inwardly directed surface portion for driving the dislodged material towards an end of the pulley as aforesaid. The invention also includes and endless conveyor comprising a first and second pulley about which an endless conveyor belt passes. The first pulley consists of a flighted rotatable element adapted in use to remove particulate material from the inside face of the belt. Preferably the device is located at a position where the direction of travel of the belt turns through approximately 180°. In this case the device itself will form one of the outer pulleys over which the belt of an end-less belt conveyor passes.
Description
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~'IEI,D OF q'fIE INVENTION
. .
~ his invention relates to an endless conveyor including a pulley -for removing particula-te ma-terial from the inner face of an endless belt conveyor and to ~.
a pulley for such an endless conveyor.
The term "endless conveyor" includes hori~on-tal and angled conveyors, belt and bucke-t conveyors and any o-ther like conveyor from which p~rticulate material is to be removed.
BRIEF DISCUSSION OF TM~ PRIO~ ~T
Thc sil~p:Lest'belt convcyor cons:Lsts o:t' a l~lat endless '.
bc:l.t :lO whlcll passes around two dr~ulls or pu'Lleys known as ., the head and ta:Ll pul'leys :L:I. an~l ovcr sma:l.:l id.lers 12 as shown in Flgure :L, The two d:rums have centrally ~ixed shafts -to allow them to ro-tate9 one of which is rotated by a source of~power. In use damp or dry particulate material is carried along the outer-face o~.the top laye:r of the belt, and material falling to the inner,~ace of the belt inter~eres with operation and stony material tends to puncture 'belts and lt ~ets trapped betwoen the belt and drum.
A pulley'for a conveyor belt adapted -to remove particulate material from the belt was previously proposed in prior British Patent Specifica-tion No. 910,801l, In that prior speci-fication two metal strips are wound spirally
~'IEI,D OF q'fIE INVENTION
. .
~ his invention relates to an endless conveyor including a pulley -for removing particula-te ma-terial from the inner face of an endless belt conveyor and to ~.
a pulley for such an endless conveyor.
The term "endless conveyor" includes hori~on-tal and angled conveyors, belt and bucke-t conveyors and any o-ther like conveyor from which p~rticulate material is to be removed.
BRIEF DISCUSSION OF TM~ PRIO~ ~T
Thc sil~p:Lest'belt convcyor cons:Lsts o:t' a l~lat endless '.
bc:l.t :lO whlcll passes around two dr~ulls or pu'Lleys known as ., the head and ta:Ll pul'leys :L:I. an~l ovcr sma:l.:l id.lers 12 as shown in Flgure :L, The two d:rums have centrally ~ixed shafts -to allow them to ro-tate9 one of which is rotated by a source of~power. In use damp or dry particulate material is carried along the outer-face o~.the top laye:r of the belt, and material falling to the inner,~ace of the belt inter~eres with operation and stony material tends to puncture 'belts and lt ~ets trapped betwoen the belt and drum.
A pulley'for a conveyor belt adapted -to remove particulate material from the belt was previously proposed in prior British Patent Specifica-tion No. 910,801l, In that prior speci-fication two metal strips are wound spirally
- 2 ~
.
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; , . . ................. . . . . . .. . . . . . .
, . , , , , , " , , , . . . - . . . .... , , . . ~ .. .. ,, . ,:, -~088450 towards one another about a frame consisting of a central shaft and a plurality of longitudinal and radial vanes.
However in that proposal the greater proportion of the circumferential surface of the pulley is represented by the faces of the strips which confront the belt and there-1 fore there is a continued danger of part:iculate matexial béing trapped between the face of a strip and the belt ; causing damage thereto. Moreover, once material is dis-lodged from the belt, the edges of the strips are too thin to move material to the outer ends of the pulley in an efficient manner and the strips tend to slice through the dislodged material.
SUMM~RY_OF THE P~ESENT INVENTION
In the present invention it is an object to pro-vide a pulley which presents a leading edge to the belt and has an area directed inwardly for driving dislodged particu-late material to an end of the pulley.
According to the present invention we provide a pulley for an endless belt conveyor comprising a shaft and a flight wound spirally about the shaft, the 1ight includ-ing an outwardly directed leading edge or supporting a belt and an inwardly directed surface portion for driving dislodged material towards an end of the pulley.
The invention also includes an endless conveyor ; ~A
.
: : ' .: ' .,, ; . ... . , . ,, . : .. . : :
; , . . ................. . . . . . .. . . . . . .
, . , , , , , " , , , . . . - . . . .... , , . . ~ .. .. ,, . ,:, -~088450 towards one another about a frame consisting of a central shaft and a plurality of longitudinal and radial vanes.
However in that proposal the greater proportion of the circumferential surface of the pulley is represented by the faces of the strips which confront the belt and there-1 fore there is a continued danger of part:iculate matexial béing trapped between the face of a strip and the belt ; causing damage thereto. Moreover, once material is dis-lodged from the belt, the edges of the strips are too thin to move material to the outer ends of the pulley in an efficient manner and the strips tend to slice through the dislodged material.
SUMM~RY_OF THE P~ESENT INVENTION
In the present invention it is an object to pro-vide a pulley which presents a leading edge to the belt and has an area directed inwardly for driving dislodged particu-late material to an end of the pulley.
According to the present invention we provide a pulley for an endless belt conveyor comprising a shaft and a flight wound spirally about the shaft, the 1ight includ-ing an outwardly directed leading edge or supporting a belt and an inwardly directed surface portion for driving dislodged material towards an end of the pulley.
The invention also includes an endless conveyor ; ~A
-3-, . i ... ~ .. . " . . ,....... , :
1~89~SO
comprising a first and a second pulley abou-t which an endless conveyor belt may be arranged to pass, the first pulley consisting of a flighted rotatable element adapted in use to remove particulate material from the inside face of a belt. The or each helical flight is mounted about the rotatable shaft in the manner of a screw thread.
Preferably the device is located at a position where the direction of travel of the belt turns throuyh approximately 180. In such a case the device itself will form one of the outer pulleys over which the belt of an endless belt conveyor passes.
The or each flight of the pulley is concentrlc with the shaft forming the axis of rotation of the pulley and may be secured directly to the shaft, or on a pipe mounted concentric with the shaft or on struts spacing the or each flight away from the shaft. If desired the periphery of the flight when viewed in a direction per-pendicular to the axis of the pulley may be convex to :
help centralise the belt on the pulley.
i' ':
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described by way ofexample with reference to the remaining accompanying draw-ings in which:
1~89~SO
comprising a first and a second pulley abou-t which an endless conveyor belt may be arranged to pass, the first pulley consisting of a flighted rotatable element adapted in use to remove particulate material from the inside face of a belt. The or each helical flight is mounted about the rotatable shaft in the manner of a screw thread.
Preferably the device is located at a position where the direction of travel of the belt turns throuyh approximately 180. In such a case the device itself will form one of the outer pulleys over which the belt of an endless belt conveyor passes.
The or each flight of the pulley is concentrlc with the shaft forming the axis of rotation of the pulley and may be secured directly to the shaft, or on a pipe mounted concentric with the shaft or on struts spacing the or each flight away from the shaft. If desired the periphery of the flight when viewed in a direction per-pendicular to the axis of the pulley may be convex to :
help centralise the belt on the pulley.
i' ':
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described by way ofexample with reference to the remaining accompanying draw-ings in which:
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Figure 1 is an isometric view of a simple, con-ventional belt conveyor.
~`Figure 2 illustrates a three flight embodiment mounted on struts.
Figure 3 is a side elevation of part of an end-less conveyor. -, DESCRIP~ION OF THE PREFERRED EMBODIMENTS
As explained above it is preferable that the de-vice in accordance with the invention replace an outer pul-ley of a conventional belt conveyor as shown in Figure 1.
In the drawings a belt cleaning device comprises more than one helical flight 1 which is mounted about a ro-tatable shaft 2 in the manner of a screw thread. The number of helical flights 1 used determines whether the device has two starting points and is dependent upon the pitch of the helical flights. The or each flight 1 is wound spirally about the shaft 2 and includes an outwardly directed lead-ing edge 20 for supporting a belt and an inwardly directed `
surface portion 21 for driving dislodged material towards an end of the pulley. The plane of the flight may be at right angles to the axis of rotation of the pulley or may be at an angle thereto.
.
'Where the pitch of a helical flight is too great . . .
to support a conveyor belt without distortion to the belt, ~ -_5 -' ' . "
:
. ~:: : . :. . ., . , : ~ . . .. : : . : : : , .:
~0~ 45~
''.
then more helical flights are added to give sufficient support to the belt.
In the preferred form of the invention shown in Figure 2 the flights are supported away from the shaft 2 by struts 5 so that the driving surface portion 21 is re- -moved from the shaft. Although not illustrated the helical flights may be mounted on a pipe concentric with the shaft Figure 3 illustrates a side elevation of part of a preferred embodiment where particulate material 6 is car-ried by the upper face o the belt 7. Particulate material which has been deposited on the inner face of the belt falls by gravity and i9 led towards an end of the pulley by the surface portion 21. It will be understood that particulate material, on reaching the pulley, is kept by gravity between `
the flights the surfaces of which move it in a direction parallel to the shaft of the pulley until it alls off the edgé of the belt. The pulley 8 is mounted on a shaft in bearings 4 (one of which is shown in Figure 3), the bearings are supported by a frame 9 which also supports idlers 12 one of which is shown.
In use the device replaces a pulley in a conveyor and as part of a conveyor belt moves upwards around such a device, any particulate material flows along the heIical -~
,:
:': - : '.
~.:
. ' . . ... ~ . . . . .... ... . . . .. . . . . . . . . . .
.
' ' ' ~ ' ' ' ' ' ~ . . . I ' , ; , . ' . ! ' , ' . , . , ., ~ . ~ ' , ~ ' . . ' ;, . . " .
so parts in a line parallel to the axis of rotation of khe device, in a space bounded by a curvecl portion of the belt and two adjacent sections of the helical flights.
The helical shaped flights can be right or left handed , to move the particulate material from the belt to one particular side, or the helical flights of half of the device on one side of a plane perpendicular to the axis of rotation can be opposite handed to the helical flights on the other side of the plane, to move the particulate mater-ial from the belt to the closest side.
Although not illustrated in the drawings it is preferred to have the periphery of the pulley Eorming the cleaning device convex when viewed in the direction per-pendicular to the axis o the Eirst pulley. The reason for this is khat the convex shape helps centralise the belt on the pulley. This may be achieved by providing spacers (not shown) of different sizes on the pipe to sup-port the flights in such a way as to give a convex shape.
Alternatively with the supporting struts may increase in length from the ends to the centre.
In order to avoid the pulley becoming jammed the gap between adjacent turns of the flight should be greater than the coarsest particle of the material being conveyed.
Preferably the pulley is about 3" longer than the width of the conveyor belt so that 1 1/2" of pulley protrudes at each end.
,:
.
: .
Figure 3 to support the flight or flights in such a way as to give a convex shape. Alternatively wi-th the embodimen-t of ~igure 4 the supporting struts may increase in length from -the ends to the centre.
In order to avoid the pulley becoming ja~med the gap between adjacent turns o-f the flight should be greater than the coarsest par-ticle of the material being conveyed.
Preferably the pulley is about 3" longer than the width of the conveyor belt so that 12" of pulley pro-trudes at each end.
. .
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~''~ ' ', ' .
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.
,: . : . ., . : . .: . . : . :. `
, ` ' ', . :','`; ~ ;' ' '' ' `'..' ''' ' ' ':` ~' - `~
~98q~i;0 :.
Figure 1 is an isometric view of a simple, con-ventional belt conveyor.
~`Figure 2 illustrates a three flight embodiment mounted on struts.
Figure 3 is a side elevation of part of an end-less conveyor. -, DESCRIP~ION OF THE PREFERRED EMBODIMENTS
As explained above it is preferable that the de-vice in accordance with the invention replace an outer pul-ley of a conventional belt conveyor as shown in Figure 1.
In the drawings a belt cleaning device comprises more than one helical flight 1 which is mounted about a ro-tatable shaft 2 in the manner of a screw thread. The number of helical flights 1 used determines whether the device has two starting points and is dependent upon the pitch of the helical flights. The or each flight 1 is wound spirally about the shaft 2 and includes an outwardly directed lead-ing edge 20 for supporting a belt and an inwardly directed `
surface portion 21 for driving dislodged material towards an end of the pulley. The plane of the flight may be at right angles to the axis of rotation of the pulley or may be at an angle thereto.
.
'Where the pitch of a helical flight is too great . . .
to support a conveyor belt without distortion to the belt, ~ -_5 -' ' . "
:
. ~:: : . :. . ., . , : ~ . . .. : : . : : : , .:
~0~ 45~
''.
then more helical flights are added to give sufficient support to the belt.
In the preferred form of the invention shown in Figure 2 the flights are supported away from the shaft 2 by struts 5 so that the driving surface portion 21 is re- -moved from the shaft. Although not illustrated the helical flights may be mounted on a pipe concentric with the shaft Figure 3 illustrates a side elevation of part of a preferred embodiment where particulate material 6 is car-ried by the upper face o the belt 7. Particulate material which has been deposited on the inner face of the belt falls by gravity and i9 led towards an end of the pulley by the surface portion 21. It will be understood that particulate material, on reaching the pulley, is kept by gravity between `
the flights the surfaces of which move it in a direction parallel to the shaft of the pulley until it alls off the edgé of the belt. The pulley 8 is mounted on a shaft in bearings 4 (one of which is shown in Figure 3), the bearings are supported by a frame 9 which also supports idlers 12 one of which is shown.
In use the device replaces a pulley in a conveyor and as part of a conveyor belt moves upwards around such a device, any particulate material flows along the heIical -~
,:
:': - : '.
~.:
. ' . . ... ~ . . . . .... ... . . . .. . . . . . . . . . .
.
' ' ' ~ ' ' ' ' ' ~ . . . I ' , ; , . ' . ! ' , ' . , . , ., ~ . ~ ' , ~ ' . . ' ;, . . " .
so parts in a line parallel to the axis of rotation of khe device, in a space bounded by a curvecl portion of the belt and two adjacent sections of the helical flights.
The helical shaped flights can be right or left handed , to move the particulate material from the belt to one particular side, or the helical flights of half of the device on one side of a plane perpendicular to the axis of rotation can be opposite handed to the helical flights on the other side of the plane, to move the particulate mater-ial from the belt to the closest side.
Although not illustrated in the drawings it is preferred to have the periphery of the pulley Eorming the cleaning device convex when viewed in the direction per-pendicular to the axis o the Eirst pulley. The reason for this is khat the convex shape helps centralise the belt on the pulley. This may be achieved by providing spacers (not shown) of different sizes on the pipe to sup-port the flights in such a way as to give a convex shape.
Alternatively with the supporting struts may increase in length from the ends to the centre.
In order to avoid the pulley becoming jammed the gap between adjacent turns of the flight should be greater than the coarsest particle of the material being conveyed.
Preferably the pulley is about 3" longer than the width of the conveyor belt so that 1 1/2" of pulley protrudes at each end.
,:
.
: .
Figure 3 to support the flight or flights in such a way as to give a convex shape. Alternatively wi-th the embodimen-t of ~igure 4 the supporting struts may increase in length from -the ends to the centre.
In order to avoid the pulley becoming ja~med the gap between adjacent turns o-f the flight should be greater than the coarsest par-ticle of the material being conveyed.
Preferably the pulley is about 3" longer than the width of the conveyor belt so that 12" of pulley pro-trudes at each end.
. .
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. .
' ' '" ~' '' . , ~'~' ,; ., '.
~''~ ' ', ' .
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.
Claims
WHAT WE CLAIM AS OUR INVENTION IS:
(1) A pulley for an endless conveyor comprising a rotatable shaft and a plurality of flights of the same hand wound helically about the shaft and starting at different angular positions about the shaft, the flights each being in strip form supported away from the shaft so as to define a substantially unrestricted annular clearance about the shaft, and having a surface portion and a narrower edge portion, the edge portion being outwardly directed for supporting a belt of the conveyor during use and the surface portion projecting inwardly from the edge portion for driving material dislodged from the belt towards an end of the pulley.
(2) A pulley for an endless conveyor according to Claim 1 wherein the flights are supported away from the shaft by a plurality of support members.
(3) A pulley for an endless conveyor according to Claim 2 wherein the supporting members are secured to a tubu-lar member coaxial with the axis of rotation of the pulley.
(4) A pulley for an endless conveyor according to Claim 1 wherein the periphery of the pulley is convex viewed in a direction perpendicular to the axis of the pulley.
(5) An endless conveyor comprising a first and a second pulley about which an endless conveyor belt may be arranged to pass, the first pulley consisting of a flighted rotatable element comprising a plurality of flights wound helically about a rotatable shaft and starting at different angular positions about the shaft and supported away from the shaft so as to define a substantially unrestricted annular clearance about the shaft, the flights each being in strip form having a surface portion and a narrower edge portion, the edge portion being outwardly directed for supporting a belt of the conveyor during use and the surface portion pro-jecting inwardly from the edge portion for driving material dislodged from the belt towards an end of the pulley.
(6) An endless conveyor according to Claim 5 where-in the flights are supported away from the shaft of the first pulley by a plurality of struts.
(7) An endless conveyor according to Claim 6 where-in the struts are mounted on pipe concentric with the axis of rotation of the first pulley.
(8) An endless conveyor according to Claim 5 where-in the periphery of the first pulley is convex viewed in a direction perpendicular to the axis of the first pulley.
(9) An endless conveyor according to Claim 5 where-in the flights of one half of the first pulley on one side of a plane perpendicular to the axis of rotation of the pulley are opposite handed to the flights on the other side of the plane.
(1) A pulley for an endless conveyor comprising a rotatable shaft and a plurality of flights of the same hand wound helically about the shaft and starting at different angular positions about the shaft, the flights each being in strip form supported away from the shaft so as to define a substantially unrestricted annular clearance about the shaft, and having a surface portion and a narrower edge portion, the edge portion being outwardly directed for supporting a belt of the conveyor during use and the surface portion projecting inwardly from the edge portion for driving material dislodged from the belt towards an end of the pulley.
(2) A pulley for an endless conveyor according to Claim 1 wherein the flights are supported away from the shaft by a plurality of support members.
(3) A pulley for an endless conveyor according to Claim 2 wherein the supporting members are secured to a tubu-lar member coaxial with the axis of rotation of the pulley.
(4) A pulley for an endless conveyor according to Claim 1 wherein the periphery of the pulley is convex viewed in a direction perpendicular to the axis of the pulley.
(5) An endless conveyor comprising a first and a second pulley about which an endless conveyor belt may be arranged to pass, the first pulley consisting of a flighted rotatable element comprising a plurality of flights wound helically about a rotatable shaft and starting at different angular positions about the shaft and supported away from the shaft so as to define a substantially unrestricted annular clearance about the shaft, the flights each being in strip form having a surface portion and a narrower edge portion, the edge portion being outwardly directed for supporting a belt of the conveyor during use and the surface portion pro-jecting inwardly from the edge portion for driving material dislodged from the belt towards an end of the pulley.
(6) An endless conveyor according to Claim 5 where-in the flights are supported away from the shaft of the first pulley by a plurality of struts.
(7) An endless conveyor according to Claim 6 where-in the struts are mounted on pipe concentric with the axis of rotation of the first pulley.
(8) An endless conveyor according to Claim 5 where-in the periphery of the first pulley is convex viewed in a direction perpendicular to the axis of the first pulley.
(9) An endless conveyor according to Claim 5 where-in the flights of one half of the first pulley on one side of a plane perpendicular to the axis of rotation of the pulley are opposite handed to the flights on the other side of the plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18167/76 | 1976-05-04 | ||
| GB18167/76A GB1525421A (en) | 1976-05-04 | 1976-05-04 | Conveyor belt cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1088450A true CA1088450A (en) | 1980-10-28 |
Family
ID=10107813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA274,857A Expired CA1088450A (en) | 1976-05-04 | 1977-03-28 | Conveyor belt cleaning device |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS52135180A (en) |
| AU (1) | AU522374B2 (en) |
| CA (1) | CA1088450A (en) |
| DE (1) | DE2717085A1 (en) |
| FR (1) | FR2350284A1 (en) |
| GB (1) | GB1525421A (en) |
| SE (1) | SE7702871L (en) |
| ZA (1) | ZA771768B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE49581E1 (en) | 2007-10-31 | 2023-07-18 | Superior Industries, Inc. | Belt conveyor wing pulley |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180155A (en) * | 1976-12-01 | 1979-12-25 | Industrial Service & Manufacturing Co. | Multiple pitch self-cleaning belt pulley |
| JPS5981315U (en) * | 1982-11-24 | 1984-06-01 | 上田農機株式会社 | Boring machine |
| IT1243511B (en) * | 1990-09-03 | 1994-06-16 | Tiziano Faccia | PERFECTED RETURN ROLLER FOR CONVEYOR BELTS |
| DE19704394B4 (en) * | 1996-09-07 | 2008-01-17 | Udo Adam Maschinenfabrik | Basket spiral reel drum for belt systems |
| JP2006020582A (en) * | 2004-07-08 | 2006-01-26 | Minoru Industrial Co Ltd | Conveying apparatus |
| DE102015211755A1 (en) * | 2015-06-24 | 2016-12-29 | Max Aicher Gmbh & Co. Kg | Roll for a conveyor system and conveyor system with at least one such role |
| CN107711952A (en) * | 2017-10-30 | 2018-02-23 | 山东省潍坊市省工食品机械科技有限公司 | Cake rolling machine conveyer belt cleaning plant |
| EP3492409B1 (en) * | 2017-11-30 | 2020-10-21 | Vestel Elektronik Sanayi ve Ticaret A.S. | Spray painting system and method of operation |
| CN112110160A (en) * | 2020-08-25 | 2020-12-22 | 宁夏共享机床辅机有限公司 | Conveyor |
| CN114516527A (en) * | 2022-02-19 | 2022-05-20 | 浙江八八机械有限公司 | High-efficient separation conveying equipment of animal waste |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE540191C (en) * | 1931-12-12 | A W Mackensen G M B H | Cleaning device, in particular for cleaning conveyor belts | |
| DE825526C (en) * | 1949-05-10 | 1951-12-20 | Fredenhagen K G | Self-cleaning belt roller |
| US2886169A (en) * | 1957-02-08 | 1959-05-12 | Joy Mfg Co | Self-cleaning belt roller |
| GB910804A (en) * | 1960-12-29 | 1962-11-21 | Whittington Engineering Compan | Improvements relating to drums and pulleys for belt-type conveyors |
| US3648826A (en) * | 1968-05-31 | 1972-03-14 | Hesston Corp | Conveyor-cleaner |
| US3626773A (en) * | 1970-05-06 | 1971-12-14 | Fredrick L Loeffler | Self-cleaning pulley |
-
1976
- 1976-05-04 GB GB18167/76A patent/GB1525421A/en not_active Expired
-
1977
- 1977-03-14 SE SE7702871A patent/SE7702871L/en unknown
- 1977-03-22 JP JP3203977A patent/JPS52135180A/en active Pending
- 1977-03-23 AU AU23556/77A patent/AU522374B2/en not_active Expired
- 1977-03-24 ZA ZA00771768A patent/ZA771768B/en unknown
- 1977-03-28 CA CA274,857A patent/CA1088450A/en not_active Expired
- 1977-04-18 DE DE19772717085 patent/DE2717085A1/en active Granted
- 1977-05-04 FR FR7713582A patent/FR2350284A1/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE49581E1 (en) | 2007-10-31 | 2023-07-18 | Superior Industries, Inc. | Belt conveyor wing pulley |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2717085C2 (en) | 1987-05-27 |
| FR2350284A1 (en) | 1977-12-02 |
| ZA771768B (en) | 1978-02-22 |
| SE7702871L (en) | 1977-11-05 |
| GB1525421A (en) | 1978-09-20 |
| DE2717085A1 (en) | 1977-11-24 |
| AU522374B2 (en) | 1982-06-03 |
| FR2350284B1 (en) | 1984-09-14 |
| JPS52135180A (en) | 1977-11-11 |
| AU2355677A (en) | 1978-09-28 |
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| MKEX | Expiry |