CA1130761A - Multi deck suspended cleaner/classifier with centrally located eccentric vibrator - Google Patents
Multi deck suspended cleaner/classifier with centrally located eccentric vibratorInfo
- Publication number
- CA1130761A CA1130761A CA372,482A CA372482A CA1130761A CA 1130761 A CA1130761 A CA 1130761A CA 372482 A CA372482 A CA 372482A CA 1130761 A CA1130761 A CA 1130761A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- decks
- secondary frame
- box
- hanger
- 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
- 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
-
- 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
Landscapes
- 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 frame and a movable frame suspended therefrom. The movable frame includes support members or cradles for upper and lower decks secured thereto. A drive box including an eccentric weight is secured to the movable frame between the upper and lower decks so that the radial driving force is located at the centre of gravity of the apparatus in both horizontal and vertical planes. Operation of the drive box and its eccentric weight provides a balanced, rotating unit causing the granular or like material on the decks to pass through perforated plates or wire mesh thereon.
An apparatus for cleaning and/or classifying granular or like material comprises a fixed frame and a movable frame suspended therefrom. The movable frame includes support members or cradles for upper and lower decks secured thereto. A drive box including an eccentric weight is secured to the movable frame between the upper and lower decks so that the radial driving force is located at the centre of gravity of the apparatus in both horizontal and vertical planes. Operation of the drive box and its eccentric weight provides a balanced, rotating unit causing the granular or like material on the decks to pass through perforated plates or wire mesh thereon.
Description
~30761 B~ackground of the Invention This invention relates to apparatus for cleaning or classifying granular material or wood chips and the like.
Machines 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 parts. Due to vertical movement, there are vertical reactions at the areas where the decks are supported, often causing fatigue and breakage of these parts.
Summary of the Invention The apparatus of the present invention provides substantial improvements over the conventional devices through having a first or fixed frame suspending a secandary frame from it through universal joints. A secondary frame in turn has attached to it one or more decks spaced into upper and lower locations with an integrated driving mechanism which is also attached to the secondary frame between the upper and lower decks. The result of this novel arrangement is that the driving mechanism and decks are all secured together to form a single unit, 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 much higher speeds due to the fact that the driving mechanism is centrally located with an eccentric weight rotating on the horizontal plane about a vertical axis, resulting radial driving force being located at the centre of gravity in the vertical and horizontal planes of the apparatus. Thus, there are no vertical reactions at the hanger supports.
The weight of the driving mechanism and the decks are always in balance to the eccentric weight of the driving mechanism.
Variation in flow loading of the apparatus is automatically compensated for by a slight variation in the throw of the eccentric.
Additionally, in the present invention there are no mechanical connections between the driving means and the decks. The hangers support the weight only and allow the secondary frame, decks and driving mechanism to rotate in a flat rotary motion. This motion covers a much greater area per revolution than "up and down" or "in line" actions as in conventional devices. Moreover, the highe- speeds provided with this apparatus combined with the circular sweeping area allow a much higher capacity of material to pass through the machine.
As the throw of the eccentric can be fixed or adjusted the apparatus can be varied to suit individual requirements.
The decks of the device can be arranged in a parallel flow or counterflow configuration and the number of decks can vary according to requirements. If necessary, an aspirator can be`attached to the apparatus to pass air through the 113~)76~
material flow thereby removing dust and providing a pneumatic classification or reparation feature to the apparatus.
According to a broad aspect, the invention relates``
to apparatus for classifying or cleaning granular material, wood chips or the like comprising: a fixed main, open box-like frame having upper and lower horizontal beam members; a secondary, deck supporting frame positioned within the main frame; a plurality of hanger members with connecting means at each end thereof for inter-connecting said secondary frame to the main frame; said hanger connecting means providing freedom of gyratory movement to the secondary frame with respect to said main frame; upper and lower cleaning or classifying decks supported in said secondary frame for movement therewith; and a driving mechanism, including an eccentric weight, located between said upper and lower decks and secured to the secondary frame for applying a flat, rotary motion to said secondary frame and the decks supported therein.
Brief Description of the Drawings The invention is illustrated by way of example in the accompanying drawings in which Figure 1 is a perspec-tive view partially cut away showing the manner of connection between the frames of the present invention, Figure 2 is an elevation view of the apparatus of Figure 1 in a parallel flow arrangement, Figu.re 3 is an elevation view similar to Figure 2 but showing the decks in a counterflow arrangement, and - ~130761 Figure 4 is a cross-sectional view through the drive box used in the present apparatus.
Figure 1 schematically illustrates the manner in which the frame members are interconnected and how the drive mechanism is connected to one of the frames. Specifi-cally, the apparatus generally indicated at 10 includes a 3~)76:~
fixed main frame 12 having vertical acquired posts 14 tonly two of which are shown) and upper horizontal beams 16, 18 and lower horizontal beams 20. The movable, secondary frame indicated generally at 22 comprises upper and lower horizontal beams 24, 26 respectively joined by parallel vertical beam members 28. Upper and lower deck assemblies 30, 32, shown in phantom line are suitably secured to the beam members of the secondary frame 22 such as by welding, bolting or the like, and these decks are spaced above and below a centrally located driving mechanism illustrated generally at 34 and including a drive box 36 rigidly mounted to the upright beams 28 so that the drive mechanism is centrally located between the upper and lower decks. Horizontal balance of the device can also be obtained by equalizing the weight both in front of and behind the dri~e box. The secondary frame 22 is suspended from the main frame 12 through a plurality of vertically extending hanger members 38 each of which has a universal joint 40 at its upPer end connection with the main frame 12 and a similar universal joint 42 at its lower end connection to the secondary frame 22.
As seen in the schematic of Figure 1, the drive mechanism includes a rotor with an eccentric weight 44, the rotor being rotated through an electric or hydraulic motor 46, preferably mounted on the exterior of the drive box.
Referring to Figure 2, the apparatus is shown in elevation view with a plurality of decks arranged in a parallel flow configuration. In this arrangement, the main frame 48 has a plurality of hanger members 50 interconnected at their upper ends to the cross beams 52 by means of universal joints 54. The lower portions of the hangers 50 1~30761 are not shown for reasons of clarity but, as in Figure 1, they are connected also by means o~ universal joints to the hori20ntal lower beam members 56 of the secondary frame 58.
A drive mechanism 60 is suitably secured to the secondary frame 58 and deck assemblies 62 and 64 are mounted above and below the driving mechanism 60 as illustrated.
Actuation of the driving ~echanism 60 causes rotary motion to be applied to the secondary frame 58 and the decks and driving mechanism connected thereto.
In the arrangement shown in Figure 2 an upper rubble deck is mounted on the upper end of the apparatus at an angle which will provide flow of the granular material, wood chips or the like in the rubble deck so that the material feeds downwardly into an infeed shoot assembly 68. Shoot 68 has a plurality of feed spouts such as 72, 74 which feed material into decks 76, 78 mounted over the drive mechanism 60 and further feed spouts 80, 82 feeding material and the like manner to decks 84 and 86 mounted below the driving mechanism 60. It wlll be observed that decks 76, 1~ and 84, 86 are mounted on suitable slopes so that, when the secondary frame and decks are put in a rotary motion, the granular material is moved across the screens and downwardly towards discharge shoots 90.
In the arrangement shown in Figure 3, the apparatus includes a rubble deck 92 receiving granular material from a gate type feeder 94 and discharging into a rotary feeder 96.
The feeder 96 drops the granular material into upper decks 98 which flow to the left in Figure 3 into an infeed shoot assembly 100 where the flow of the material is reversed and dropped into one or more lower deck assemblies 110, 112 or 114, )76~
depending on the size of the granular material such as baxley or wheat. In this arrangement, the rotary feeder 96, rubble deck 10 and ~ate type feeder 94 are optional devices and an aspirator can be attached to the infeed shoot assembly to provide pneumatic separation and dust removal of the granular material passing from the upper to the lower decks.
The driving mechanism 60 includes a motor assembly 116 secured to a drive box 118 which is secured to the vertical beams 120 of the secondary frame.
Referring to Figure 4, the drive mechanism preferably is of the type shown in my co-pending Canadian Patent application 324,331, filed March 28th, 1979. Referring to Figure 4, the drive mechanism includes a box structure 124 having top, bottom and sidewalls suitably secured together as by welding. The top and bottom walls include integral hubs 126, 128 which structurally support a shaft 130 of substantial diameter by way of bolts 132. A bearing assembly 134 is mounted for rotation on the shaft 130 on which is mounted a rotatable housing 136 to which is secured a drive pulley 138 and a rotor 140. A~ illustrated in Figure 1 a motor of suitable power is mounted preferably on the exterior of the drive box and is connected by V-belts or the like to the pulley 138 on the rotor 136 so that the latter is rotated together with its eccentric 140.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims.
1~307~1 The terms and expressions which have been employed in this specification are used as terms of description and not of limi~tation, and there is no intention in the use o~ such terms and expressions to exclude any equivalents of the features shown and described or portions thereof, but it is reco~nized that var~ous modi`fications are possible within the scope of the invention claimed.
Machines 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 parts. Due to vertical movement, there are vertical reactions at the areas where the decks are supported, often causing fatigue and breakage of these parts.
Summary of the Invention The apparatus of the present invention provides substantial improvements over the conventional devices through having a first or fixed frame suspending a secandary frame from it through universal joints. A secondary frame in turn has attached to it one or more decks spaced into upper and lower locations with an integrated driving mechanism which is also attached to the secondary frame between the upper and lower decks. The result of this novel arrangement is that the driving mechanism and decks are all secured together to form a single unit, 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 much higher speeds due to the fact that the driving mechanism is centrally located with an eccentric weight rotating on the horizontal plane about a vertical axis, resulting radial driving force being located at the centre of gravity in the vertical and horizontal planes of the apparatus. Thus, there are no vertical reactions at the hanger supports.
The weight of the driving mechanism and the decks are always in balance to the eccentric weight of the driving mechanism.
Variation in flow loading of the apparatus is automatically compensated for by a slight variation in the throw of the eccentric.
Additionally, in the present invention there are no mechanical connections between the driving means and the decks. The hangers support the weight only and allow the secondary frame, decks and driving mechanism to rotate in a flat rotary motion. This motion covers a much greater area per revolution than "up and down" or "in line" actions as in conventional devices. Moreover, the highe- speeds provided with this apparatus combined with the circular sweeping area allow a much higher capacity of material to pass through the machine.
As the throw of the eccentric can be fixed or adjusted the apparatus can be varied to suit individual requirements.
The decks of the device can be arranged in a parallel flow or counterflow configuration and the number of decks can vary according to requirements. If necessary, an aspirator can be`attached to the apparatus to pass air through the 113~)76~
material flow thereby removing dust and providing a pneumatic classification or reparation feature to the apparatus.
According to a broad aspect, the invention relates``
to apparatus for classifying or cleaning granular material, wood chips or the like comprising: a fixed main, open box-like frame having upper and lower horizontal beam members; a secondary, deck supporting frame positioned within the main frame; a plurality of hanger members with connecting means at each end thereof for inter-connecting said secondary frame to the main frame; said hanger connecting means providing freedom of gyratory movement to the secondary frame with respect to said main frame; upper and lower cleaning or classifying decks supported in said secondary frame for movement therewith; and a driving mechanism, including an eccentric weight, located between said upper and lower decks and secured to the secondary frame for applying a flat, rotary motion to said secondary frame and the decks supported therein.
Brief Description of the Drawings The invention is illustrated by way of example in the accompanying drawings in which Figure 1 is a perspec-tive view partially cut away showing the manner of connection between the frames of the present invention, Figure 2 is an elevation view of the apparatus of Figure 1 in a parallel flow arrangement, Figu.re 3 is an elevation view similar to Figure 2 but showing the decks in a counterflow arrangement, and - ~130761 Figure 4 is a cross-sectional view through the drive box used in the present apparatus.
Figure 1 schematically illustrates the manner in which the frame members are interconnected and how the drive mechanism is connected to one of the frames. Specifi-cally, the apparatus generally indicated at 10 includes a 3~)76:~
fixed main frame 12 having vertical acquired posts 14 tonly two of which are shown) and upper horizontal beams 16, 18 and lower horizontal beams 20. The movable, secondary frame indicated generally at 22 comprises upper and lower horizontal beams 24, 26 respectively joined by parallel vertical beam members 28. Upper and lower deck assemblies 30, 32, shown in phantom line are suitably secured to the beam members of the secondary frame 22 such as by welding, bolting or the like, and these decks are spaced above and below a centrally located driving mechanism illustrated generally at 34 and including a drive box 36 rigidly mounted to the upright beams 28 so that the drive mechanism is centrally located between the upper and lower decks. Horizontal balance of the device can also be obtained by equalizing the weight both in front of and behind the dri~e box. The secondary frame 22 is suspended from the main frame 12 through a plurality of vertically extending hanger members 38 each of which has a universal joint 40 at its upPer end connection with the main frame 12 and a similar universal joint 42 at its lower end connection to the secondary frame 22.
As seen in the schematic of Figure 1, the drive mechanism includes a rotor with an eccentric weight 44, the rotor being rotated through an electric or hydraulic motor 46, preferably mounted on the exterior of the drive box.
Referring to Figure 2, the apparatus is shown in elevation view with a plurality of decks arranged in a parallel flow configuration. In this arrangement, the main frame 48 has a plurality of hanger members 50 interconnected at their upper ends to the cross beams 52 by means of universal joints 54. The lower portions of the hangers 50 1~30761 are not shown for reasons of clarity but, as in Figure 1, they are connected also by means o~ universal joints to the hori20ntal lower beam members 56 of the secondary frame 58.
A drive mechanism 60 is suitably secured to the secondary frame 58 and deck assemblies 62 and 64 are mounted above and below the driving mechanism 60 as illustrated.
Actuation of the driving ~echanism 60 causes rotary motion to be applied to the secondary frame 58 and the decks and driving mechanism connected thereto.
In the arrangement shown in Figure 2 an upper rubble deck is mounted on the upper end of the apparatus at an angle which will provide flow of the granular material, wood chips or the like in the rubble deck so that the material feeds downwardly into an infeed shoot assembly 68. Shoot 68 has a plurality of feed spouts such as 72, 74 which feed material into decks 76, 78 mounted over the drive mechanism 60 and further feed spouts 80, 82 feeding material and the like manner to decks 84 and 86 mounted below the driving mechanism 60. It wlll be observed that decks 76, 1~ and 84, 86 are mounted on suitable slopes so that, when the secondary frame and decks are put in a rotary motion, the granular material is moved across the screens and downwardly towards discharge shoots 90.
In the arrangement shown in Figure 3, the apparatus includes a rubble deck 92 receiving granular material from a gate type feeder 94 and discharging into a rotary feeder 96.
The feeder 96 drops the granular material into upper decks 98 which flow to the left in Figure 3 into an infeed shoot assembly 100 where the flow of the material is reversed and dropped into one or more lower deck assemblies 110, 112 or 114, )76~
depending on the size of the granular material such as baxley or wheat. In this arrangement, the rotary feeder 96, rubble deck 10 and ~ate type feeder 94 are optional devices and an aspirator can be attached to the infeed shoot assembly to provide pneumatic separation and dust removal of the granular material passing from the upper to the lower decks.
The driving mechanism 60 includes a motor assembly 116 secured to a drive box 118 which is secured to the vertical beams 120 of the secondary frame.
Referring to Figure 4, the drive mechanism preferably is of the type shown in my co-pending Canadian Patent application 324,331, filed March 28th, 1979. Referring to Figure 4, the drive mechanism includes a box structure 124 having top, bottom and sidewalls suitably secured together as by welding. The top and bottom walls include integral hubs 126, 128 which structurally support a shaft 130 of substantial diameter by way of bolts 132. A bearing assembly 134 is mounted for rotation on the shaft 130 on which is mounted a rotatable housing 136 to which is secured a drive pulley 138 and a rotor 140. A~ illustrated in Figure 1 a motor of suitable power is mounted preferably on the exterior of the drive box and is connected by V-belts or the like to the pulley 138 on the rotor 136 so that the latter is rotated together with its eccentric 140.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims.
1~307~1 The terms and expressions which have been employed in this specification are used as terms of description and not of limi~tation, and there is no intention in the use o~ such terms and expressions to exclude any equivalents of the features shown and described or portions thereof, but it is reco~nized that var~ous modi`fications are possible within the scope of the invention claimed.
Claims (3)
1. Apparatus for classifying or cleaning granular material, wood chips or the like comprising a) a fixed main, open box-like frame having upper and lower horizontal beam members;
b) a secondary, deck supporting frame positioned within the main frame;
c) a plurality of hanger members with connecting means at each end thereof for interconnecting said secondary frame to the main frame;
d) said hanger connecting means providing freedom of gyratory movement to the secondary frame with respect to said main frame;
e) upper and lower cleaning or classifying decks supported in said secondary frame for movement therewith;
and f) a driving mechanism, including an eccentric weight, located between said upper and lower decks and secured to the secondary frame for applying a flat, rotary motion to said secondary frame and the decks supported therein.
b) a secondary, deck supporting frame positioned within the main frame;
c) a plurality of hanger members with connecting means at each end thereof for interconnecting said secondary frame to the main frame;
d) said hanger connecting means providing freedom of gyratory movement to the secondary frame with respect to said main frame;
e) upper and lower cleaning or classifying decks supported in said secondary frame for movement therewith;
and f) a driving mechanism, including an eccentric weight, located between said upper and lower decks and secured to the secondary frame for applying a flat, rotary motion to said secondary frame and the decks supported therein.
2. Apparatus according to claim 1 wherein said secon-dary frame includes horizontal beam members supporting said decks and drive mechanism; said hanger members interconnecting the upper horizontal beam members of the main frame with lower horizontal beam members of the secondary frame and wherein said hanger connecting means are universal joints at each end of each hanger.
3. Apparatus according to claims l or 2 wherein said driving mechanism comprises a box structure secured to said secondary frame, a shaft and bearing assembly mounted in said box and an eccentric rotor mounted on said bearing assembly for rotation within said box, and a motor mounted on said box for rotating the rotor and eccentric weight; said driving mechanism being positioned generally centrally in the secondary frame intermediate the decks so that the force of the driving means is generally located at the centre of gravity in the vertical and horizontal planes of the apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA372,482A CA1130761A (en) | 1981-03-06 | 1981-03-06 | Multi deck suspended cleaner/classifier with centrally located eccentric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA372,482A CA1130761A (en) | 1981-03-06 | 1981-03-06 | Multi deck suspended cleaner/classifier with centrally located eccentric vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1130761A true CA1130761A (en) | 1982-08-31 |
Family
ID=4119393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA372,482A Expired CA1130761A (en) | 1981-03-06 | 1981-03-06 | Multi deck suspended cleaner/classifier with centrally located eccentric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1130761A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1981
- 1981-03-06 CA CA372,482A patent/CA1130761A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |