CA1246012A - Vertically spaced eccentric weight agitators in a multi-deck classifier - Google Patents
Vertically spaced eccentric weight agitators in a multi-deck classifierInfo
- Publication number
- CA1246012A CA1246012A CA000453771A CA453771A CA1246012A CA 1246012 A CA1246012 A CA 1246012A CA 000453771 A CA000453771 A CA 000453771A CA 453771 A CA453771 A CA 453771A CA 1246012 A CA1246012 A CA 1246012A
- Authority
- CA
- Canada
- Prior art keywords
- decks
- secondary frame
- shaft
- frame
- rotor
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/38—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens oscillating in a circular arc in their own plane; Plansifters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus for cleaning and/or classifying granular or like material comprises a fixed outer frame and an inner movable frame suspended therefrom. The movable frame includes support members or cradles for a plurality of screen decks secured thereto. Upper and lower drive units, each including an eccentric weight are secured to the movable frame above and below the screen decks. The drive units can be located centrally of the decks with connecting drive means located centrally of, or to one side of the decks, or individual hydraulic or electric drive means, operating in unison may be used.
An apparatus for cleaning and/or classifying granular or like material comprises a fixed outer frame and an inner movable frame suspended therefrom. The movable frame includes support members or cradles for a plurality of screen decks secured thereto. Upper and lower drive units, each including an eccentric weight are secured to the movable frame above and below the screen decks. The drive units can be located centrally of the decks with connecting drive means located centrally of, or to one side of the decks, or individual hydraulic or electric drive means, operating in unison may be used.
Description
Background of the Invention This inventlon relates to aPparatus for cleaniny or classifying granular material or wood chips and the like~
~lachines for cleaning grain or separating wood chips are well known and conventional devices in this art normally have at least one deck for transporting the material to be cleaned or classified and some form of mechanism for vibrating the deck, usually eccentric apparatus adapted to shake the screens vertically or in a back and forth motion.
Conventional devices are not entirely satisfactory for various reasons. As an example, there is normally a mechanical connection between the drive mechanism and the decks for moving the decks up and down. This provides numerous areas of wear and many rotating ~arts. Due to vertical movement, there are vertical reactions at the areas where the decks are supported, often causing fatigue and breakage of these parts. My Canadian patent No. 1,130,761 of August 31st, 1982 discloses improvements over the above-mentioned, conventional devices. In that patent, an inner frame having a centrally located, between-the-decks drive means, g~rates the inner frame and the decks within the outer frame from which it is suspended.
Summarv of the Invention , r The apparatus o the present invention provides substantial improvements over both the conventional devices and the disclosure of my abovementioned Canadian Patent 1,130,761~ In this invention there is again a first or fixed fram'e suspending a secondary frame from it through universal joints. The secondary frame in turn has attached to it a plurality of decks stacked one above the other with an integrated driving mechanism which is also attached to the secondary frame above and below the decks The resul~ of this novel arrangement is that the driving mechanism and decks are all secured together to form a single uni~, all being rotated together when the driving mechanism is actuated. The secondary frame and decks are carried on or suspended by four hangers from the fixed frame. The present apparatus provides reduced stress forces as the impelling forces are at the top and bottom of the secondary frame. With the eccentric drives located above and below the decks, the decks can be nested between the drives to reduce thé width and héight of a given machine.
The drives can be located outside and clear of the part to be agitated and the frame of the machine can be structurally less as the drive box forces are applied at several places.
In one embodiment, the drives are built into the upper and lower secondary frame members, eliminating the need for a separate drive bo~ in the middle of the assembly.
According to a broad aspect, the present invéntion relates to apparatus for classifying or cleaning granular matérial, wood chips or the like and comprising a fixed main frame and a movable, secondary frame suspended there- -from. A plurality of cleaning or classifying decks aresupported in the secondary frame for movement therewith and means are provided for applying a gyratory movement to the secondary frame and decks consisting of at least a pair of eccentric weights, one located above and one below the decks and secured to the secondary frame for applying said gyratory motion to the secondary frame and the decks supported therein.
The invention is illustrated by way of example in accompanying drawings in which: .
Figure 1 is an elevation view partly in section, of one embodiment of the apparatus according to the invention;
Figure 2 is another elevation view, partly in section, 10 Of a further embodiment of the invention;
Figure 3 is a plan view of the apparatus in Figure 2;
Figures 4 and 5 are end and side elevation views, schematically illustrating a still further embodiment of the invention;
Figure 6 is a sectional view showing one form of a drive means for the apparatus:
Figure 7 is a view similar to Figure 6 showing a further form of the drive means: and Figures 8 and 9 are side and sectional views 20 respectively of a still further embodiment of the invention.
Referring to Figure 1, the apparatus 10 includes an ~uter, main frame 12 and an inner, secondary frame 14 suspended from the main frame by universal joints, not shown, in the manner illustrated in my previously mentioned Canadian 25 Patent 1,130,761 of August 31, 1982. The secondary frame 14 supports a plurality of cleaning decks 16 which are fed with granular material or the like from a manifold 18.
A pair of rotors 20 and 22 are secured to the upper ~z~
and lower sections 24, 26 respectively of the secondary frame 14. The upper rotor 20 includes an eccentric weight 28 and a pulley 30 which is connected by a suitable drive belt or the like 32 to a drive pulley 34 on an electric motor 36 mounted to the secondary frame as illustrated.
Similarly, the lower rotor assembly 22 has an eccentric weight 38 and the two rotor assemblies are connected by a vertical sha~t 40 extending downwardly through the center of the decks 16. The rotary motion applied to the upper rotor assembly 20 by ~he motor 36 is transmitted via the shaft 40 to a lower rotor assembly 22.
Compared to an arrangement of having the classifying decks located over and under a central drive box as in Patent 1,130,761, the arrangement shown in Figure 1 is substantially less in height for a given number of decks.
Moreover, the stress forces are substantially less in accordance with this arrangement as the eccentric weights are located at the top and bottom of the secondary drive frame. This frame acts like a simple beam instead of a double cantilever. ~oreover, as the eccentric drives are located at the top and bottom of the decks, the latter can be nested between the drives and close in to the shaft. This reduces the width and height of the machine.
Turning now to Figure 2, a further embodLment of the invention is illustrated, the main frame being omitted for clarity and the secondary frame being shown schematically~
In accordance with Figures 2 and 3, the secondary frame 42 includes upper and lower enclosures 44 and 46 which B
~%~
enclose rotary assemblies 48 and 50 respectively. The classifying decks 52, seen here schematically, extend lengthwise of the secondary frame, the latter supporting a vertically oriented jack shaft 54 secured adjace~t the sides of the decks 52, the upper and lower ends of the shaft 54 having pulleys 56 and 58 drivingly connected to pulleys 60 and 62 on the upper and lower rotary assemblies 48 and 50 res ectively.;Upper assembly 48 has an eccentric weight 64 and the lower assembly 50 has an eccentric weight 66. ~s shown in Figure 3, a motor 68 drives the jack shaft 54 thereby rotating the upper and lower eccentrics 64 and 66 in unison to provide the desired gyratory motion.
The embo~iment of Figures 2 and 3, utilizing the outside, high speed shaft, eliminates the slower speed shaft lS running down the center of the screen as in Figure 1. The desirability of two or more rotor assemblies is that it spreads the driving force from the rotors and reduces the high fatigue stresses in the secondary frame structure.
The embodiment of the invention shown in Figures 4 through 7 inclusive illustrate hydraulic drives for flat rotary screens. Referring firstly to Figures 4 and 5, the secondary framework 70 is of substantial height and is suspended from a suitable stxuctural support 72 such as a building beam or separate main frame, The suspension is carried out through support hangers 74 having universal joints or the like at either end in accordance with the disclosure of Canadian Patent 1,130,761. The frame 70 has at least a pair of drive boxes 76 above and below each B`
~z~
group of decks 78. Each drive box 76 is removable as a unit from the frame and each box 76 is an independent unit which can be removed and replaced quickly. As shown in Figure 6, the hydraulic drive may include a shaft mounted motor 80 provided with an eccentric 82, the motor 80 being connected by flexible hoses 84 and 86 to fixed headers 88 which in turn are connected to a suitable speed control 90 on an hydraulic power pack 92 as shown in Figure 4.
The hydraulic drive in Figure 7 consists of an eccentric 94 mounted for rotation on a dead shaft 96 by suitable bearing means 98, the eccentric being rotated by a remotely located hydraulic motor 100 having a primary gear 102 secured thereto and meshing with a driven gear 10~ mounted on the eccentric rotary.
The hydraulic motors used in this embodiment would be positive displacement motors and would be driven from a positive displacement pump so as to keep all the rotors in the same rotary relationship. There are several advantages to utilizing an hydraulic drive one of which is the elimination of either a vertical center shaft or outside jack shaft of Figures 1 or 2 and it would also eliminate the gear belts and V-belts relating to the mechanically driven embodiments.
It will be appreciated ~rom Figures 4 through 7 that each drive box can be easily replaced without disturbing the screen decks associated ~herewith. Additionally, the hydraulic drive, which has a separate power unit, is ideal for precise speed control and the like. Elimination of vertical shafts also does away with bearing alignments, belt tension, ~z~
lubrication and maintenance of bearings, etc~ Hydraulic drives also make possible a multidrive screen such as a four box multidrive arrangement which would allow a scre~n height of about 20 feet with 5 feet or more ~etween each box vertically and about 6 decks between each box or moreO
The embodiments shown in Figures 8 and 9 illustrate a wide and long screen arrangement having a multiple drive arrangement ~ provide a flat rotary action as well as a ~ertical vibration to one of the screen decks. Such screens are used in the mining industry including the classification of coal. ~s shown in Figure 8, one palr o~ drive unlts 106 and 108 are mounted on one side of the machine, another pair at 110 being mounted on the other side. Each pair of drive units includes its own eccentric weight rotor 112 as shown in Figure 9, one rotor being mounted above and below the deck area. The upper and lower eccentrics 112 are inter-connected by means of a vertical shaft 114 and are rotated by hydraulic motors 116. These are connected by flexible lines 118 to a manifold header 120 for delivery of pressurized oil.
As shown in Figure 8, there is sufficient room between the upper deck 122 and lower deck 124 to mount a horizontally located vibratory shaft 126 driven by its associated motor 128.
There are numerous alternatives to the embodiment of Figures 8 and 9 such as a bottom deck ~24 being identical to that of the top deck but without the vibratory shaft 126.
f~
It Will be appreciated that the spaced apart rotors will have to be weighted to balance the machine weight at the rotor locations. For example:
Top WT. x 1l1 Throw = Rotor Wt. x Radius 4000 x 1 = Rotor Wt. x 10"
Rotor Wt. - 4000 = 400#
Bottom WB x 1" = Rotor Wt. x Radius 2000 x 1" = Rotor Wt. x 10"
Rotor Wt. = 2000 = 200~
While the invention has been described in connection with specific embodiments thereof and in specific uses, various modifications will occur to those s~illed in the art without departin~ from the spirit and scope of the invention as set forth in the appended claims.
The terms and expressions which have been employed in the specification are used as terms of description and not of limitation. ~here is no intention in the use of such terms and expressions to exclude any equivalents of the features shown and described or portions thereof.
It is also recognized that various modifications are possible within the scope of the invention claimed.
~lachines for cleaning grain or separating wood chips are well known and conventional devices in this art normally have at least one deck for transporting the material to be cleaned or classified and some form of mechanism for vibrating the deck, usually eccentric apparatus adapted to shake the screens vertically or in a back and forth motion.
Conventional devices are not entirely satisfactory for various reasons. As an example, there is normally a mechanical connection between the drive mechanism and the decks for moving the decks up and down. This provides numerous areas of wear and many rotating ~arts. Due to vertical movement, there are vertical reactions at the areas where the decks are supported, often causing fatigue and breakage of these parts. My Canadian patent No. 1,130,761 of August 31st, 1982 discloses improvements over the above-mentioned, conventional devices. In that patent, an inner frame having a centrally located, between-the-decks drive means, g~rates the inner frame and the decks within the outer frame from which it is suspended.
Summarv of the Invention , r The apparatus o the present invention provides substantial improvements over both the conventional devices and the disclosure of my abovementioned Canadian Patent 1,130,761~ In this invention there is again a first or fixed fram'e suspending a secondary frame from it through universal joints. The secondary frame in turn has attached to it a plurality of decks stacked one above the other with an integrated driving mechanism which is also attached to the secondary frame above and below the decks The resul~ of this novel arrangement is that the driving mechanism and decks are all secured together to form a single uni~, all being rotated together when the driving mechanism is actuated. The secondary frame and decks are carried on or suspended by four hangers from the fixed frame. The present apparatus provides reduced stress forces as the impelling forces are at the top and bottom of the secondary frame. With the eccentric drives located above and below the decks, the decks can be nested between the drives to reduce thé width and héight of a given machine.
The drives can be located outside and clear of the part to be agitated and the frame of the machine can be structurally less as the drive box forces are applied at several places.
In one embodiment, the drives are built into the upper and lower secondary frame members, eliminating the need for a separate drive bo~ in the middle of the assembly.
According to a broad aspect, the present invéntion relates to apparatus for classifying or cleaning granular matérial, wood chips or the like and comprising a fixed main frame and a movable, secondary frame suspended there- -from. A plurality of cleaning or classifying decks aresupported in the secondary frame for movement therewith and means are provided for applying a gyratory movement to the secondary frame and decks consisting of at least a pair of eccentric weights, one located above and one below the decks and secured to the secondary frame for applying said gyratory motion to the secondary frame and the decks supported therein.
The invention is illustrated by way of example in accompanying drawings in which: .
Figure 1 is an elevation view partly in section, of one embodiment of the apparatus according to the invention;
Figure 2 is another elevation view, partly in section, 10 Of a further embodiment of the invention;
Figure 3 is a plan view of the apparatus in Figure 2;
Figures 4 and 5 are end and side elevation views, schematically illustrating a still further embodiment of the invention;
Figure 6 is a sectional view showing one form of a drive means for the apparatus:
Figure 7 is a view similar to Figure 6 showing a further form of the drive means: and Figures 8 and 9 are side and sectional views 20 respectively of a still further embodiment of the invention.
Referring to Figure 1, the apparatus 10 includes an ~uter, main frame 12 and an inner, secondary frame 14 suspended from the main frame by universal joints, not shown, in the manner illustrated in my previously mentioned Canadian 25 Patent 1,130,761 of August 31, 1982. The secondary frame 14 supports a plurality of cleaning decks 16 which are fed with granular material or the like from a manifold 18.
A pair of rotors 20 and 22 are secured to the upper ~z~
and lower sections 24, 26 respectively of the secondary frame 14. The upper rotor 20 includes an eccentric weight 28 and a pulley 30 which is connected by a suitable drive belt or the like 32 to a drive pulley 34 on an electric motor 36 mounted to the secondary frame as illustrated.
Similarly, the lower rotor assembly 22 has an eccentric weight 38 and the two rotor assemblies are connected by a vertical sha~t 40 extending downwardly through the center of the decks 16. The rotary motion applied to the upper rotor assembly 20 by ~he motor 36 is transmitted via the shaft 40 to a lower rotor assembly 22.
Compared to an arrangement of having the classifying decks located over and under a central drive box as in Patent 1,130,761, the arrangement shown in Figure 1 is substantially less in height for a given number of decks.
Moreover, the stress forces are substantially less in accordance with this arrangement as the eccentric weights are located at the top and bottom of the secondary drive frame. This frame acts like a simple beam instead of a double cantilever. ~oreover, as the eccentric drives are located at the top and bottom of the decks, the latter can be nested between the drives and close in to the shaft. This reduces the width and height of the machine.
Turning now to Figure 2, a further embodLment of the invention is illustrated, the main frame being omitted for clarity and the secondary frame being shown schematically~
In accordance with Figures 2 and 3, the secondary frame 42 includes upper and lower enclosures 44 and 46 which B
~%~
enclose rotary assemblies 48 and 50 respectively. The classifying decks 52, seen here schematically, extend lengthwise of the secondary frame, the latter supporting a vertically oriented jack shaft 54 secured adjace~t the sides of the decks 52, the upper and lower ends of the shaft 54 having pulleys 56 and 58 drivingly connected to pulleys 60 and 62 on the upper and lower rotary assemblies 48 and 50 res ectively.;Upper assembly 48 has an eccentric weight 64 and the lower assembly 50 has an eccentric weight 66. ~s shown in Figure 3, a motor 68 drives the jack shaft 54 thereby rotating the upper and lower eccentrics 64 and 66 in unison to provide the desired gyratory motion.
The embo~iment of Figures 2 and 3, utilizing the outside, high speed shaft, eliminates the slower speed shaft lS running down the center of the screen as in Figure 1. The desirability of two or more rotor assemblies is that it spreads the driving force from the rotors and reduces the high fatigue stresses in the secondary frame structure.
The embodiment of the invention shown in Figures 4 through 7 inclusive illustrate hydraulic drives for flat rotary screens. Referring firstly to Figures 4 and 5, the secondary framework 70 is of substantial height and is suspended from a suitable stxuctural support 72 such as a building beam or separate main frame, The suspension is carried out through support hangers 74 having universal joints or the like at either end in accordance with the disclosure of Canadian Patent 1,130,761. The frame 70 has at least a pair of drive boxes 76 above and below each B`
~z~
group of decks 78. Each drive box 76 is removable as a unit from the frame and each box 76 is an independent unit which can be removed and replaced quickly. As shown in Figure 6, the hydraulic drive may include a shaft mounted motor 80 provided with an eccentric 82, the motor 80 being connected by flexible hoses 84 and 86 to fixed headers 88 which in turn are connected to a suitable speed control 90 on an hydraulic power pack 92 as shown in Figure 4.
The hydraulic drive in Figure 7 consists of an eccentric 94 mounted for rotation on a dead shaft 96 by suitable bearing means 98, the eccentric being rotated by a remotely located hydraulic motor 100 having a primary gear 102 secured thereto and meshing with a driven gear 10~ mounted on the eccentric rotary.
The hydraulic motors used in this embodiment would be positive displacement motors and would be driven from a positive displacement pump so as to keep all the rotors in the same rotary relationship. There are several advantages to utilizing an hydraulic drive one of which is the elimination of either a vertical center shaft or outside jack shaft of Figures 1 or 2 and it would also eliminate the gear belts and V-belts relating to the mechanically driven embodiments.
It will be appreciated ~rom Figures 4 through 7 that each drive box can be easily replaced without disturbing the screen decks associated ~herewith. Additionally, the hydraulic drive, which has a separate power unit, is ideal for precise speed control and the like. Elimination of vertical shafts also does away with bearing alignments, belt tension, ~z~
lubrication and maintenance of bearings, etc~ Hydraulic drives also make possible a multidrive screen such as a four box multidrive arrangement which would allow a scre~n height of about 20 feet with 5 feet or more ~etween each box vertically and about 6 decks between each box or moreO
The embodiments shown in Figures 8 and 9 illustrate a wide and long screen arrangement having a multiple drive arrangement ~ provide a flat rotary action as well as a ~ertical vibration to one of the screen decks. Such screens are used in the mining industry including the classification of coal. ~s shown in Figure 8, one palr o~ drive unlts 106 and 108 are mounted on one side of the machine, another pair at 110 being mounted on the other side. Each pair of drive units includes its own eccentric weight rotor 112 as shown in Figure 9, one rotor being mounted above and below the deck area. The upper and lower eccentrics 112 are inter-connected by means of a vertical shaft 114 and are rotated by hydraulic motors 116. These are connected by flexible lines 118 to a manifold header 120 for delivery of pressurized oil.
As shown in Figure 8, there is sufficient room between the upper deck 122 and lower deck 124 to mount a horizontally located vibratory shaft 126 driven by its associated motor 128.
There are numerous alternatives to the embodiment of Figures 8 and 9 such as a bottom deck ~24 being identical to that of the top deck but without the vibratory shaft 126.
f~
It Will be appreciated that the spaced apart rotors will have to be weighted to balance the machine weight at the rotor locations. For example:
Top WT. x 1l1 Throw = Rotor Wt. x Radius 4000 x 1 = Rotor Wt. x 10"
Rotor Wt. - 4000 = 400#
Bottom WB x 1" = Rotor Wt. x Radius 2000 x 1" = Rotor Wt. x 10"
Rotor Wt. = 2000 = 200~
While the invention has been described in connection with specific embodiments thereof and in specific uses, various modifications will occur to those s~illed in the art without departin~ from the spirit and scope of the invention as set forth in the appended claims.
The terms and expressions which have been employed in the specification are used as terms of description and not of limitation. ~here is no intention in the use of such terms and expressions to exclude any equivalents of the features shown and described or portions thereof.
It is also recognized that various modifications are possible within the scope of the invention claimed.
Claims (4)
1. Apparatus for classifying and cleaning granular material, wood chips or the like comprising a fixed, stationary main frame and a movable, secondary frame within the confines of said main frame; a plurality of universal joint hangers suspending said secondary frame from said main frame and within the confines thereof; a plurality of stacked, cleaning or classifying decks secured to and supported in said secondary frame for movement therewith; and means for applying a gyratory movement to said second frame and the decks supported therein comprising a pair of eccentric rotor means mounted to said secondary frame and spaced one above and one below said decks, the rotary axis of said rotor means being substantially centrally of said secondary frame; a drive shaft interconnecting said rotor means for operating said rotor means in unison; and means for driving said drive shaft and rotor means comprising motor means mounted on said secondary frame and operatively connected to one of said interconnected rotor means.
2. Apparatus according to claim 1 wherein said shaft is a vertically oriented shaft extending substantially centrally through said decks and being coaxial with respect to said rotor means mounted adjacent each end of said shaft; said driving means comprising a motor mounted on said secondary frame and being operatively connected to one end of said shaft.
3. Apparatus according to claim 1 wherein said shaft is a vertically oriented shaft mounted on said secondary frame remote from said decks, motor means on said secondary frame for driving said shaft and transmission means interconnect-ing said motor means and said rotor means.
4. Apparatus according to Claim 1 including a vibratory drive means mounted to at least one of said decks to apply a substantially vertically oriented vibratory move-ment to said decks, and a plurality of spaced pairs of eccentric driveable rotors secured to said secondary frame, at least one pair located on either side of said decks.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49487783A | 1983-05-16 | 1983-05-16 | |
| US494,877 | 1983-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1246012A true CA1246012A (en) | 1988-12-06 |
Family
ID=23966343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000453771A Expired CA1246012A (en) | 1983-05-16 | 1984-05-08 | Vertically spaced eccentric weight agitators in a multi-deck classifier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1246012A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944339A (en) * | 2017-05-08 | 2017-07-14 | 济南中燃科技发展有限公司 | Compass screen surface can floated vibratory sieve and method for sieving during one kind work |
| WO2020174099A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Screening device, in particular for use in a system for producing material panels |
| WO2020174098A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | A screen to be used in chipboard factories |
| WO2020174100A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Screen, especially prepared for dust induced explosions and preferably usable in the wood-working industry |
| CN113546842A (en) * | 2021-07-31 | 2021-10-26 | 江苏法斯特机械有限公司 | Drawer type rotary classifying screen |
-
1984
- 1984-05-08 CA CA000453771A patent/CA1246012A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944339A (en) * | 2017-05-08 | 2017-07-14 | 济南中燃科技发展有限公司 | Compass screen surface can floated vibratory sieve and method for sieving during one kind work |
| CN106944339B (en) * | 2017-05-08 | 2023-06-02 | 济南中燃科技发展有限公司 | Vibrating screen with floatable screen surface during working and screening method |
| WO2020174099A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Screening device, in particular for use in a system for producing material panels |
| WO2020174098A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | A screen to be used in chipboard factories |
| WO2020174100A1 (en) * | 2019-02-28 | 2020-09-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Screen, especially prepared for dust induced explosions and preferably usable in the wood-working industry |
| CN113710382A (en) * | 2019-02-28 | 2021-11-26 | 迪芬巴赫机械工程有限公司 | Screening element, in particular for dust-induced explosions, and preferably for use in the wood-processing industry |
| CN113710380A (en) * | 2019-02-28 | 2021-11-26 | 迪芬巴赫机械工程有限公司 | Screening device, in particular for use in a system for producing material panels |
| CN113710381A (en) * | 2019-02-28 | 2021-11-26 | 迪芬巴赫机械工程有限公司 | Screening element for chipboard plants |
| CN113710380B (en) * | 2019-02-28 | 2024-03-12 | 迪芬巴赫机械工程有限公司 | Screening device, in particular for use in a system for producing sheets of material |
| CN113546842A (en) * | 2021-07-31 | 2021-10-26 | 江苏法斯特机械有限公司 | Drawer type rotary classifying screen |
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