WO2010108702A1 - Gravity distributor for distributing bulk material onto the rectangular surface - Google Patents
Gravity distributor for distributing bulk material onto the rectangular surface Download PDFInfo
- Publication number
- WO2010108702A1 WO2010108702A1 PCT/EP2010/050756 EP2010050756W WO2010108702A1 WO 2010108702 A1 WO2010108702 A1 WO 2010108702A1 EP 2010050756 W EP2010050756 W EP 2010050756W WO 2010108702 A1 WO2010108702 A1 WO 2010108702A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bulk material
- stream
- divider
- distribution stage
- deflector plates
- Prior art date
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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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
- B65G69/0441—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials with chutes, deflector means or channels
Definitions
- the invention relates to the field of distributors for bulk material and is intended for uninterruptable and even distribution of bulk material onto a rectangular surface.
- surface in the sense of present invention means a rectangular surface existing in reality, but also as an imaginary horizontal rectangular surface, for example a horizontal section of a container.
- the invention has been drawn up with a purpose to distribute hot cinder, fed into a heat exchanger through a tube at a temperature of about 820 0 C, evenly onto the rectangular cross section of the heat exchanger, which is very important in order to ensure effective operation of the heat exchanger.
- the invention is also applicable in devices having a large diameter circular cross section, but its application is most effective with rectangular surfaces up to 36 m 2 .
- this device is for distributing coarse-grained materials (for example grain), and second, this device insures even distribution of bulk materials only onto the surface having a circular shape.
- Gravity distributor according to the invention for distributing bulk material stream evenly onto a rectangular surface includes an upper distribution stage and a lower distribution stage, placed one above the other, together with the mounted therein dispersing devices.
- the upper distribution stage of the gravity distributor includes a hopper together with a dispersing device positioned therein and an inlet tube for introducing bulk material inserted vertically into the latter.
- the lower distribution stage of the gravity distributor includes a body member, having a rectangular cross section in the horizontal plane and upright side walls, that form a vertical shaft for directing bulk material, distributed evenly over the rectangular cross section, further into a vertical heat exchanger, and in the upper region of that body member there is a dispersing device for bulk material.
- an outlet end piece having an evenly narrowing cross section and ending up with an elongated outlet slot, that is parallel to the longer sides of the hopper.
- the dispersing device for the bulk material of the upper distribution stage includes an elongated divider of the stream of bulk material, disposed horizontally under the lower end of the inlet tube, and beneath the divider there are deflector plates, whereby the divider is disposed transverse in relation to the longer side walls of the rectangular hopper, and deflector plates are disposed transverse in relation to the dividers of the stream of bulk material.
- the dispersing device for the bulk material of the lower distribution stage includes an elongated divider of the stream of bulk material, disposed horizontally under the outlet slot of the upper stage in parallel with said slot, and beneath the divider there are deflector plates disposed transverse in relation to the dividers of the stream of bulk material.
- Each deflector plate is of an oblonged and tapering shape, its wider end being disposed under the respective divider of the stream of bulk material and in vertical direction the narrower end of the deflector plate is lower than its wider end.
- the divider of the upper distribution stage has at least two deflector plates that are disposed at either side of the divider of the stream of bulk material, whereby the distance between the lower ends of deflector plates is at least one third of the length of the outlet slot.
- the dispersing device of the lower distribution stage includes at either side of the divider of the stream of bulk material at least two adjacent deflector plates, whereby the distance between the lower ends of opposite reflector plates is at least one third of the horizontal dimension of the body member of the lower distribution stage in the direction of deflector plates.
- the cross section of dividers of the stream of bulk material in both upper and lower distribution stages has the shape of a isosceles triangle and the respective deflector plates are disposed beneath the lower surface of the divider of the stream of bulk material.
- each deflector plate of the upper distribution stage there has been fixed at least one cross plate, the longitudinal axis of which is parallel to the divider of the stream of bulk material.
- Lower surfaces of all adjacent deflector plates of the lower distribution stage are joined by the means of at least one cross plate, the longitudinal axis of which is parallel to the divider of the stream of bulk material.
- the angle of inclination of deflector plates is adjustable in a vertical direction.
- the position of the divider of the stream of bulk material of the upper distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates underneath it.
- the position of the divider of the stream of bulk material of the lower distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates underneath it.
- the deflector plates have either the shape of a isosceles triangle or a trapezoid.
- - Fig 1 is a schematic sectional view of the gravity distributor;
- - Fig 2 is a schematic view along a stepped line of intersection B-B in Fig. 1 ;
- - Fig 3 is a schematic plan view along a line of intersection A-A in Fig. 1 ;
- - Fig 4 is an enlarged view of B in Fig. 3.
- the design of the gravity distributor for dividing the stream of bulk material according to the invention, that is used for even distribution of bulk material onto the horizontal rectangular cross section is schematically depicted in the drawings Fig 1 to Fig 4.
- the gravity distributor according to the invention includes vertically positioned upper and lower distribution stages.
- the upper distribution stage is comprised by hopper 30, whereby a vertical inlet tube 5 is inserted into the central region of the hopper.
- a dispersing device of the stream of bulk material that in turn includes an elongated horizontal divider 65 of the stream of bulk material, positioned beneath the lower end of inlet tube 5, and two deflector plates 15, that have the shape of a isosceles triangle and are positioned each on the other side of the divider 65 beneath it relative to the vertical direction.
- the deflector plates 15 have an elongated shape tapering in the direction away from the divider 65 (drawings Fig 1 and Fig 3).
- the deflector plates 15 are attached to the upper side of the support beam 55 (Fig 2) by means of pivots 25.
- the deflector plates 15 have the shape of isosceles triangles, but they may also be isosceles trapezoids.
- the divider 65 is an elongated detail having a triangular cross-section and is installed with its ridge pointing upwards. The divider 65 is positioned transversely in relation to the longer side walls of the hopper 30.
- the hopper 30 For excreting of the stream of bulk material the hopper 30 has in its lower part an outlet nozzle 36 with an uniformly converging cross-section, having at its bottom an oblong outlet slot 35 that is running in the same direction with the longer side walls of the hopper 30 and positioned centrally over the whole length of the hopper 30.
- a part of the bulk material falling over the edges of the deflector palates 15 hits the cross plates 20 and is directed back towards the central region of the hopper 30. In this manner the stream of the bulk material falling from above is distributed relatively uniformly all over the longer dimension of the hopper of the first distribution stage.
- the distance between the free ends of deflector plates 15, disposed on either side of the divider 65, in a horizontal direction is preferably at least one third of length of the outlet slot 35 of the outlet nozzle 36 positioned underneath.
- a support beam 55 to which the carriers are attached, at the ends of the latter there are adjusting screws 10 for adjusting the angle of inclination of the deflector plates 15 in a vertical direction, around the pivots 25 (drawing Fig 2), relative to the divider 65.
- the position of the divider 65 in the upper distribution stage relative to the lower end of the inlet pipe 5 is adjustable with pulling rods 75 that are fixed to the ends of the divider 65 (drawing Fig 3).
- the lower distribution stage includes a housing 90, preferably covered from above and having a rectangular cross-section in a horizontal plane and vertical side walls, whereby the upper part of the housing 90 includes the dispersing device of the lower distribution stage of the stream of bulk material that includes an oblonged horizontal divider 70 of the stream of bulk material and deflector plates 40 positioned underneath.
- the outlet slot 35 of the outlet nozzle 36 of the upper distribution stage is inserted into the central region of the upper part of the housing 90 of the lower distribution stage so that the outlet slot 35 and the positioned underneath divider 70 of the flow of bulk material in the second distribution device are located one above the other (drawing Fig 1 ).
- the dispersing device of the lower distribution stage is located in the upper part of the covered from above housing 90 and this housing 90 forms a vertical shaft above the surface onto which the bulk material is distributed.
- the cross-section of the housing 90 forming a shaft corresponds in a horizontal plane to a rectangular surface onto which the bulk material will be distributed.
- the divider 70 is also a horizontally positioned oblonged detail with a ridge pointing upwards.
- the position of the divider 70 of the lower distribution stage in respect to the outlet slot 35 of the outlet nozzle 36 in horizontal plane is adjustable by means of pulling rods 80 (drawings Fig 1 and Fig 3) attached to the ends of the divider.
- deflector plates 40 On either side of the divider 70 there are several deflector plates 40 close to each other.
- the deflector plates 40 are located on either side of the divider 70 practically all over its length between the walls of the housing 90, except for its ends that rest on the side walls (or bearings) of the housing 90.
- the ends of the outlet slot 35 of the outlet nozzle 36 of the upper distribution stage are on the same line with the centers of the wider ends of the outermost deflector plates 40 positioned underneath.
- the deflector plates 40 are located on both sides of the divider 70 and placed next to each other over the whole width of the housing 90.
- the distance between free ends of the opposite deflector plates 40, disposed on either sides of the divider 70, in a horizontal plane is at least one third of the horizontal dimension of the housing 90 in a longitudinal direction of deflector plates 40.
- the deflector plates 40 have an oblonged and tapering shape in the direction off from the divider 70.
- the deflector plates 40 of the lower distribution stage are shaped as isosceles triangles. But these may also have the shape of a trapezoid.
- the deflector plates 40 are along their wider end by means of a pivot 50 attached to the upper side of support beam 60 positioned underneath the divider 70.
- the lower sides of the adjacent deflector plates 40 of the second distribution stage are mutually joined with three oblonged cross plates 45, the longitudinal of which is parallel to the divider 70 (drawings Fig 1 and Fig 2).
- cross plates 45 The function of the cross plates 45 is to rigidly connect mutually adjacent deflector plates 40 and in addition to assist to evenly distribute the bulk material falling down over the edges of the deflector plates 40 and to assure the same angle of inclination for all deflector plates 40 connected to the cross plates 45.
- Common cross plates 45 also assure simpler adjustment of inclination of the deflector plates since there is no need to adjust the inclination of every deflector plate 40 individually.
- the gravity distributor according to the invention functions as described hereinafter.
- the stream of bulk material fed from the inlet pipe 5 into the hopper 30 of the upper distribution stage moves due to the gravity force downwards and falls at first onto the divider 65 of the stream of bulk material of the dispersing device in the upper distribution stage, that splits this stream into two.
- the outlet nozzle 36 in the lower part of the hopper 30 has sidewalls that uniformly taper in a downward direction and the bulk material falling onto them from the above deflector plates 15 is directed into an oblonged outlet slot 35 in the bottom of the outlet nozzle 36.
- the stream of bulk material leaving the oblonged and relatively narrow outlet slot 35 of the outlet nozzle 36 relatively uniformly distribute along the outlet slot, i.e. the stream of bulk material of uniform density having the length of the outlet slot 35 and maximum thickness equalling to its width is obtained, this stream falling further onto the divider 70 of the dispersing device in the lower distribution stage.
- the dispersing device of the lower distribution stage is positioned in respect to the dispersing device of the upper distribution stage so, that the longitudinal direction of the oblonged divider 70 of this dispersing device is parallel to the outlet slot 35 of the outlet nozzle 36 of the upper distribution stage, i.e. the output slot 35 of the output nozzle 36 and the divider 70 beneath it are positioned one above the other.
- the wide and relatively thin and over all its width relatively uniformly distributed stream of bulk material leaving the outlet slot 35 of the outlet nozzle of the upper dispersing device, falls onto the divider 70 of the lower distribution stage.
- the inclination of these plates in respect to the horizontal plane must be greater (i.e. steeper) than the angle of internal friction (angle of inclination of natural falling).
- the inclination of the deflector plates 15 or 40 is changed by means of adjusting screws 10 in order to assure uniform falling of bulk material over the edges of deflector plates 15 or 40 along their whole length.
- the position of the dividers 65 and 70 is adjusted.
- the position of the divider 65 under the inlet tube 5 is adjusted first, by selecting such a position of the pulling rods 75 and the divider 65 joined with them is respect to the stream of bulk material leaving the inlet tube 5 by means of nuts 85 of pulling rods 75, that the stream of bulk material leaving the outlet slot 35 will have as uniform thickness as possible over the whole length of the outlet slot.
- This provision is met when the height of the formed layer of bulk material on the bottom of housing 90 is as even as possible in the vertical cross-section, that is perpendicular to the divider 65.
- the position of the divider 70 is adjusted in respect to the outlet slot 35 in order to assure uniform distribution of the wide and thin stream of bulk material falling onto divider 70 on the bottom of the housing 90.
- the position of the divider is adjusted by means of nuts 85 of pulling rods 75 until the height of the formed layer of bulk material on the bottom of housing 90 is as even as possible in the vertical cross-section, that is perpendicular to the divider 70.
- the gravity distributor is aimed for uniform distribution of hot cinder onto the inlet of heat exchanger disposed under the housing 90, i.e. practically onto the horizontal cross-section of the housing 90, then the housing 90 has no bottom and for tuning of the gravity distributor it has to be placed on a horizontal surface that during tuning serves as a temporary bottom for housing 90.
- the present invention is not limited to the above exemplary embodiment and within the scope of claims other embodiments are also possible.
- the list of reference numbers used in the figures are also possible.
Abstract
Present invention relates to a gravity distributor for distributing bulk material onto a rectangular surface, whereby the distributor includes an upper and a lower distribution stage, each comprising a spreading device. The upper distribution stage comprises a hopper (30), in the upper part of which there is a vertically inserted inlet tube (5) for feeding in bulk material, and in the upper part of the hopper (30) there is also a spreading device for the stream of bulk material and in the lower part of the hopper (30) there is an outlet nozzle (36) with an outlet slot (35). The spreading device of the bulk material includes a horizontal elongated divider (65) and deflector plates (15) located beneath the divider (65). Under the outlet slot (35) of the upper distribution stage there is the lower distribution stage for the bulk material, also comprising an elongated divider (70) and deflector plates (40) located beneath the divider (70).
Description
Gravity distributor for distributing bulk material onto the rectangular surface
Technical field
The invention relates to the field of distributors for bulk material and is intended for uninterruptable and even distribution of bulk material onto a rectangular surface. The term "surface" in the sense of present invention means a rectangular surface existing in reality, but also as an imaginary horizontal rectangular surface, for example a horizontal section of a container. The invention has been drawn up with a purpose to distribute hot cinder, fed into a heat exchanger through a tube at a temperature of about 820 0C, evenly onto the rectangular cross section of the heat exchanger, which is very important in order to ensure effective operation of the heat exchanger. The invention is also applicable in devices having a large diameter circular cross section, but its application is most effective with rectangular surfaces up to 36 m2.
Prior art Form the United States patent US 6 991 415 B1 (published on 31.01.2006) a gravity distributor for grains is known. In principle this gravity distributor is a two-stage device, first stage including a tubular body member having in its lower part a conical element, by displacing it upwards and downwards a slot between the tubular body member and the conical element is adjusted, thereby simultaneously also the amount and speed of grains flowing out from this slot is controlled.
The grain flowing out from the slot falls onto the deflecting device (deflector) in the second stage, the deflector being a conical element pointing with its tip upwards, whereby from the lower part of the conical element channel members or chutes extend in order to disperse the stream of grain falling down. The shortcomings of this known distributor are as follows: first, this device is for distributing coarse-grained materials (for example grain), and second, this device insures even distribution of bulk materials only onto the surface having a circular shape.
Summary of the invention Gravity distributor according to the invention for distributing bulk material stream evenly onto a rectangular surface includes an upper distribution stage and a lower distribution stage, placed one above the other, together with the mounted therein dispersing devices.
The upper distribution stage of the gravity distributor includes a hopper together with a dispersing device positioned therein and an inlet tube for introducing bulk material inserted vertically into the latter.
The lower distribution stage of the gravity distributor includes a body member, having a rectangular cross section in the horizontal plane and upright side walls, that form a vertical shaft for directing bulk material, distributed evenly over the rectangular cross section, further into a vertical heat exchanger, and in the upper region of that body member there is a dispersing device for bulk material.
In the lower section of the upper distribution device there is an outlet end piece, having an evenly narrowing cross section and ending up with an elongated outlet slot, that is parallel to the longer sides of the hopper.
The dispersing device for the bulk material of the upper distribution stage includes an elongated divider of the stream of bulk material, disposed horizontally under the lower end of the inlet tube, and beneath the divider there are deflector plates, whereby the divider is disposed transverse in relation to the longer side walls of the rectangular hopper, and deflector plates are disposed transverse in relation to the dividers of the stream of bulk material.
The dispersing device for the bulk material of the lower distribution stage includes an elongated divider of the stream of bulk material, disposed horizontally under the outlet slot of the upper stage in parallel with said slot, and beneath the divider there are deflector plates disposed transverse in relation to the dividers of the stream of bulk material.
Each deflector plate is of an oblonged and tapering shape, its wider end being disposed under the respective divider of the stream of bulk material and in vertical direction the narrower end of the deflector plate is lower than its wider end.
The divider of the upper distribution stage has at least two deflector plates that are disposed at either side of the divider of the stream of bulk material, whereby the distance between the lower ends of deflector plates is at least one third of the length of the outlet slot. The dispersing device of the lower distribution stage includes at either side of the divider of the stream of bulk material at least two adjacent deflector plates, whereby the distance between the lower ends of opposite reflector plates is at least one third
of the horizontal dimension of the body member of the lower distribution stage in the direction of deflector plates.
The cross section of dividers of the stream of bulk material in both upper and lower distribution stages has the shape of a isosceles triangle and the respective deflector plates are disposed beneath the lower surface of the divider of the stream of bulk material.
Onto the lower side of each deflector plate of the upper distribution stage there has been fixed at least one cross plate, the longitudinal axis of which is parallel to the divider of the stream of bulk material. Lower surfaces of all adjacent deflector plates of the lower distribution stage are joined by the means of at least one cross plate, the longitudinal axis of which is parallel to the divider of the stream of bulk material.
The angle of inclination of deflector plates is adjustable in a vertical direction.
The position of the divider of the stream of bulk material of the upper distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates underneath it.
The position of the divider of the stream of bulk material of the lower distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates underneath it. The deflector plates have either the shape of a isosceles triangle or a trapezoid. Brief description of the drawings
Further the gravity distributor according to the invention shall be described in more detail with references to the annexed drawings, whereby:
- Fig 1 is a schematic sectional view of the gravity distributor; - Fig 2 is a schematic view along a stepped line of intersection B-B in Fig. 1 ;
- Fig 3 is a schematic plan view along a line of intersection A-A in Fig. 1 ; and
- Fig 4 is an enlarged view of B in Fig. 3.
Example of the embodiment of the invention
The design of the gravity distributor for dividing the stream of bulk material according to the invention, that is used for even distribution of bulk material onto the horizontal rectangular cross section is schematically depicted in the drawings Fig 1 to Fig 4.
The gravity distributor according to the invention includes vertically positioned upper and lower distribution stages.
The upper distribution stage is comprised by hopper 30, whereby a vertical inlet tube 5 is inserted into the central region of the hopper. In the upper part of the hopper 30 there is positioned a dispersing device of the stream of bulk material, that in turn includes an elongated horizontal divider 65 of the stream of bulk material, positioned beneath the lower end of inlet tube 5, and two deflector plates 15, that have the shape of a isosceles triangle and are positioned each on the other side of the divider 65 beneath it relative to the vertical direction. In general, the deflector plates 15 have an elongated shape tapering in the direction away from the divider 65 (drawings Fig 1 and Fig 3). At their wider ends the deflector plates 15 are attached to the upper side of the support beam 55 (Fig 2) by means of pivots 25. In the described embodiment the deflector plates 15 have the shape of isosceles triangles, but they may also be isosceles trapezoids. The divider 65 is an elongated detail having a triangular cross-section and is installed with its ridge pointing upwards. The divider 65 is positioned transversely in relation to the longer side walls of the hopper 30.
For excreting of the stream of bulk material the hopper 30 has in its lower part an outlet nozzle 36 with an uniformly converging cross-section, having at its bottom an oblong outlet slot 35 that is running in the same direction with the longer side walls of the hopper 30 and positioned centrally over the whole length of the hopper 30.
To the lower side of deflector plates 15 of the upper distribution stage there are attached oblonged cross plates 20, the alignment of its longitudinal direction is parallel with the divider 65 of the flow of the stream of bulk material in the upper distribution stage.
A part of the bulk material falling over the edges of the deflector palates 15 hits the cross plates 20 and is directed back towards the central region of the hopper 30. In this manner the stream of the bulk material falling from above is distributed relatively uniformly all over the longer dimension of the hopper of the first distribution stage. The distance between the free ends of deflector plates 15, disposed on either side of the divider 65, in a horizontal direction is preferably at least one third of length of the outlet slot 35 of the outlet nozzle 36 positioned underneath.
Further, beneath the divider 65 there is a support beam 55 to which the carriers are attached, at the ends of the latter there are adjusting screws 10 for adjusting the angle of inclination of the deflector plates 15 in a vertical direction, around the pivots 25 (drawing Fig 2), relative to the divider 65. The position of the divider 65 in the upper distribution stage relative to the lower end of the inlet pipe 5 is adjustable with pulling rods 75 that are fixed to the ends of the divider 65 (drawing Fig 3).
The lower distribution stage includes a housing 90, preferably covered from above and having a rectangular cross-section in a horizontal plane and vertical side walls, whereby the upper part of the housing 90 includes the dispersing device of the lower distribution stage of the stream of bulk material that includes an oblonged horizontal divider 70 of the stream of bulk material and deflector plates 40 positioned underneath.
The outlet slot 35 of the outlet nozzle 36 of the upper distribution stage is inserted into the central region of the upper part of the housing 90 of the lower distribution stage so that the outlet slot 35 and the positioned underneath divider 70 of the flow of bulk material in the second distribution device are located one above the other (drawing Fig 1 ).
The dispersing device of the lower distribution stage is located in the upper part of the covered from above housing 90 and this housing 90 forms a vertical shaft above the surface onto which the bulk material is distributed.
The cross-section of the housing 90 forming a shaft corresponds in a horizontal plane to a rectangular surface onto which the bulk material will be distributed.
The divider 70 is also a horizontally positioned oblonged detail with a ridge pointing upwards.
The position of the divider 70 of the lower distribution stage in respect to the outlet slot 35 of the outlet nozzle 36 in horizontal plane is adjustable by means of pulling rods 80 (drawings Fig 1 and Fig 3) attached to the ends of the divider.
On either side of the divider 70 there are several deflector plates 40 close to each other. The deflector plates 40 are located on either side of the divider 70 practically
all over its length between the walls of the housing 90, except for its ends that rest on the side walls (or bearings) of the housing 90.
In the embodiment shown in Fig 2 the ends of the outlet slot 35 of the outlet nozzle 36 of the upper distribution stage are on the same line with the centers of the wider ends of the outermost deflector plates 40 positioned underneath. The deflector plates 40 are located on both sides of the divider 70 and placed next to each other over the whole width of the housing 90. The distance between free ends of the opposite deflector plates 40, disposed on either sides of the divider 70, in a horizontal plane is at least one third of the horizontal dimension of the housing 90 in a longitudinal direction of deflector plates 40.
In general the deflector plates 40 have an oblonged and tapering shape in the direction off from the divider 70. In the present embodiment the deflector plates 40 of the lower distribution stage are shaped as isosceles triangles. But these may also have the shape of a trapezoid. The deflector plates 40 are along their wider end by means of a pivot 50 attached to the upper side of support beam 60 positioned underneath the divider 70. In the present exemplary embodiment the lower sides of the adjacent deflector plates 40 of the second distribution stage are mutually joined with three oblonged cross plates 45, the longitudinal of which is parallel to the divider 70 (drawings Fig 1 and Fig 2). The function of the cross plates 45 is to rigidly connect mutually adjacent deflector plates 40 and in addition to assist to evenly distribute the bulk material falling down over the edges of the deflector plates 40 and to assure the same angle of inclination for all deflector plates 40 connected to the cross plates 45. Common cross plates 45 also assure simpler adjustment of inclination of the deflector plates since there is no need to adjust the inclination of every deflector plate 40 individually.
Beneath the divider 70 there is a support beam 60 to which the carriers are attached, at the ends of which are adjusting screws 10 for adjusting (drawing Fig 1 ) the angle of inclination of the deflector plates 40 around the pivots 50 relative to the divider 70.
The gravity distributor according to the invention functions as described hereinafter. The stream of bulk material fed from the inlet pipe 5 into the hopper 30 of the upper distribution stage moves due to the gravity force downwards and falls at first onto the
divider 65 of the stream of bulk material of the dispersing device in the upper distribution stage, that splits this stream into two.
Whereas the deflector plates 15 on the sides of the divider 65 taper towards their tip (triangular), a part of the bulk material goes over the edges of the deflector plates and continues moving by falling freely downwards, whereby a part of the material hits against the cross plates 20 and after bouncing is directed towards the central part of the hopper 30.
The outlet nozzle 36 in the lower part of the hopper 30 has sidewalls that uniformly taper in a downward direction and the bulk material falling onto them from the above deflector plates 15 is directed into an oblonged outlet slot 35 in the bottom of the outlet nozzle 36.
As a result, the stream of bulk material leaving the oblonged and relatively narrow outlet slot 35 of the outlet nozzle 36 relatively uniformly distribute along the outlet slot, i.e. the stream of bulk material of uniform density having the length of the outlet slot 35 and maximum thickness equalling to its width is obtained, this stream falling further onto the divider 70 of the dispersing device in the lower distribution stage.
The dispersing device of the lower distribution stage is positioned in respect to the dispersing device of the upper distribution stage so, that the longitudinal direction of the oblonged divider 70 of this dispersing device is parallel to the outlet slot 35 of the outlet nozzle 36 of the upper distribution stage, i.e. the output slot 35 of the output nozzle 36 and the divider 70 beneath it are positioned one above the other. As a result, the wide and relatively thin and over all its width relatively uniformly distributed stream of bulk material, leaving the outlet slot 35 of the outlet nozzle of the upper dispersing device, falls onto the divider 70 of the lower distribution stage. Whereas on both sides of the divider 70 of the dispersing device of the lower distribution stage there are identical adjacent and tapering (triangular) deflector plates 40, a part of bulk material flows over the edges of deflector plates and falls freely downwards, a part of the material hits against the cross plates 45 and after bouncing is directed towards the central part of the housing 90. In this manner the stream of bulk material falling from above is divided relatively uniformly over the horizontal cross-section of the second distribution stage or onto its bottom, when the housing 90 is provided with the latter.
Before operation the gravity distributor is tuned, whereby this is carried out in two phases.
In order to avoid building up of bulk material on the deflector plates 15 and 40, i.e. to avoid accumulation of material on their surfaces and to cause it to flow-off, the inclination of these plates in respect to the horizontal plane must be greater (i.e. steeper) than the angle of internal friction (angle of inclination of natural falling). To achieve this, during the first phase the inclination of the deflector plates 15 or 40 is changed by means of adjusting screws 10 in order to assure uniform falling of bulk material over the edges of deflector plates 15 or 40 along their whole length. During the second phase the position of the dividers 65 and 70 is adjusted. As the bulk material falling down through the inlet tube 5 does not necessarily fill up all its cross-section, the position of the divider 65 under the inlet tube 5 is adjusted first, by selecting such a position of the pulling rods 75 and the divider 65 joined with them is respect to the stream of bulk material leaving the inlet tube 5 by means of nuts 85 of pulling rods 75, that the stream of bulk material leaving the outlet slot 35 will have as uniform thickness as possible over the whole length of the outlet slot. This provision is met when the height of the formed layer of bulk material on the bottom of housing 90 is as even as possible in the vertical cross-section, that is perpendicular to the divider 65. After that the position of the divider 70 is adjusted in respect to the outlet slot 35 in order to assure uniform distribution of the wide and thin stream of bulk material falling onto divider 70 on the bottom of the housing 90. For this purpose the position of the divider is adjusted by means of nuts 85 of pulling rods 75 until the height of the formed layer of bulk material on the bottom of housing 90 is as even as possible in the vertical cross-section, that is perpendicular to the divider 70. In case the gravity distributor is aimed for uniform distribution of hot cinder onto the inlet of heat exchanger disposed under the housing 90, i.e. practically onto the horizontal cross-section of the housing 90, then the housing 90 has no bottom and for tuning of the gravity distributor it has to be placed on a horizontal surface that during tuning serves as a temporary bottom for housing 90. The present invention is not limited to the above exemplary embodiment and within the scope of claims other embodiments are also possible.
The list of reference numbers used in the figures
5 inlet tube
10 adjusting screw
15 deflector plate 20 cross plate
25 pivot
30 hopper
35 outlet slot
36 outlet nozzle 40 deflector plate
45 cross plate
50 pivot
55 support beam
60 support beam 65 divider
70 divider
75, 80 - pulling rod
85 nut
90 housing
Claims
1. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface, includes an upper distribution stage and a lower distribution stage, placed one above the other, whereby: the upper distribution stage includes a hopper (30) together with a dispersing device positioned therein and an inlet tube inserted vertically from above into the hopper (30) for introducing bulk material; - the lower distribution stage includes a body member (90), having a rectangular cross section in the horizontal plane and upright side walls, forming a vertical shaft, and in the upper region of that body member there is a dispersing device for bulk material. characterized in that - in the lower section of the hopper (30) of the upper distribution device there is an outlet nozzle (36), having an evenly narrowing cross section and ending up with an elongated outlet slot (35), that is parallel to the longer walls of the hopper (30); the dispersing device of the stream of bulk material of the upper distribution stage includes an elongated divider (65) of the stream of bulk material, disposed horizontally under the lower end of the inlet tube, and beneath the divider (65) there are deflector plates (15), whereby the divider (65) is disposed transverse in respect to the longer side walls of the rectangular hopper (30), and deflector plates (15) are disposed transverse in respect to the divider (65) of the stream of bulk material; the dispersing device of the stream of bulk material of the lower distribution stage includes an elongated divider (70) of the stream of bulk material, disposed horizontally under the outlet slot (35) of the upper stage in parallel with said slot, and beneath the divider (70) there are deflector plates (40), disposed transverse in respect to the divider (70) of the stream of bulk material; each deflector plate (15, 40) is of an oblonged and tapering shape, and its wider end being disposed under the respective divider (65, 70) of the stream of bulk material and in the vertical direction the narrower end of the deflector plate (15, 40) is lower than its wider end.
2. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the divider of the upper distribution stage includes at least two deflector plates (15) that are disposed at either side of the divider of the stream of bulk material, whereby the distance between the lower ends of deflector plates (15) is at least one third of the length of the outlet slot.
3. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the dispersing device of the lower distribution stage includes at either side of the divider (70) of the stream of bulk material at least two adjacent deflector plates (40), whereby the distance between the lower ends of opposite reflector plates (40) is at least one third of the horizontal dimension of the body member of the lower distribution stage in the direction of deflector plates.
4. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the cross section of dividers of the stream of bulk material (65, 70) in both upper and lower distribution stages have the shape of an isosceles triangle and the respective deflector plates (15, 40) are disposed beneath the lower surface of the divider of the stream of bulk material.
5. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that onto the lower side of each deflector plate (15) of the upper distribution stage there has been fixed at least one cross plate (20), the longitudinal axis of which is parallel to the divider (65) of the stream of bulk material.
6. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that lower surfaces of all adjacent deflector plates (40) of the lower distribution stage are joined together by means of at least one cross plate (45), the longitudinal axis of which is parallel to the divider (70) of the stream of bulk material.
7. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the angle of inclination of deflector plates (15, 40) is adjustable in a vertical direction.
8. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the position of the divider (65) of the stream of bulk material of the upper distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates (15) underneath it.
9. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the position of the divider (70) of the stream of bulk material of the lower distribution stage is adjustable in a horizontal plane in the direction of the longitudinal axes of deflector plates (40) underneath it.
10. Gravity distributor for distributing bulk material stream evenly onto a rectangular surface according to claim 1 , characterized in that the deflector plates
(15, 40) have either the shape of a isosceles triangle or a trapezoid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EEP200900020 | 2009-03-24 | ||
| EEP200900020A EE05562B1 (en) | 2009-03-24 | 2009-03-24 | Gravity divider for evenly distributing the bulk material stream over a rectangular surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010108702A1 true WO2010108702A1 (en) | 2010-09-30 |
Family
ID=42110185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/050756 WO2010108702A1 (en) | 2009-03-24 | 2010-01-25 | Gravity distributor for distributing bulk material onto the rectangular surface |
Country Status (2)
| Country | Link |
|---|---|
| EE (1) | EE05562B1 (en) |
| WO (1) | WO2010108702A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012101039A1 (en) | 2011-01-24 | 2012-08-02 | Teijin Aramid B.V. | Device and method for distributing powder |
| CN104003216A (en) * | 2014-03-27 | 2014-08-27 | 上海创和亿电子科技发展有限公司 | Tobacco distributing plate |
| CN105858276A (en) * | 2016-05-27 | 2016-08-17 | 大唐环境产业集团股份有限公司 | Falling material distributing device for storage bin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1451148A (en) * | 1973-03-07 | 1976-09-29 | Alfa Laval Ab | Silo and a distributor for uniformly distributing a material in the silo method of producing liquid olefin polymer |
| DE2842979A1 (en) * | 1978-10-02 | 1980-04-10 | Edwin Eisenegger | Material distribution along straight track - involves conveyor with shaped upper part, inclined lower section and rotating outlet channel |
| JPH10120194A (en) * | 1996-10-23 | 1998-05-12 | Sanyo Chem Ind Ltd | Dispersing device for thrown-in article |
| US6991415B1 (en) | 2001-09-07 | 2006-01-31 | Anschultz Jackie R | Gravity grain diverter |
-
2009
- 2009-03-24 EE EEP200900020A patent/EE05562B1/en unknown
-
2010
- 2010-01-25 WO PCT/EP2010/050756 patent/WO2010108702A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1451148A (en) * | 1973-03-07 | 1976-09-29 | Alfa Laval Ab | Silo and a distributor for uniformly distributing a material in the silo method of producing liquid olefin polymer |
| DE2842979A1 (en) * | 1978-10-02 | 1980-04-10 | Edwin Eisenegger | Material distribution along straight track - involves conveyor with shaped upper part, inclined lower section and rotating outlet channel |
| JPH10120194A (en) * | 1996-10-23 | 1998-05-12 | Sanyo Chem Ind Ltd | Dispersing device for thrown-in article |
| US6991415B1 (en) | 2001-09-07 | 2006-01-31 | Anschultz Jackie R | Gravity grain diverter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012101039A1 (en) | 2011-01-24 | 2012-08-02 | Teijin Aramid B.V. | Device and method for distributing powder |
| CN103328355A (en) * | 2011-01-24 | 2013-09-25 | 帝人芳纶有限公司 | Device and method for distributing powder |
| CN104003216A (en) * | 2014-03-27 | 2014-08-27 | 上海创和亿电子科技发展有限公司 | Tobacco distributing plate |
| CN105858276A (en) * | 2016-05-27 | 2016-08-17 | 大唐环境产业集团股份有限公司 | Falling material distributing device for storage bin |
Also Published As
| Publication number | Publication date |
|---|---|
| EE200900020A (en) | 2010-12-15 |
| EE05562B1 (en) | 2012-08-15 |
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