JPH0639258A - Device for diffusing powdery material into gaseous stream - Google Patents
Device for diffusing powdery material into gaseous streamInfo
- Publication number
- JPH0639258A JPH0639258A JP5068553A JP6855393A JPH0639258A JP H0639258 A JPH0639258 A JP H0639258A JP 5068553 A JP5068553 A JP 5068553A JP 6855393 A JP6855393 A JP 6855393A JP H0639258 A JPH0639258 A JP H0639258A
- Authority
- JP
- Japan
- Prior art keywords
- supply pipe
- plates
- plate
- stretching
- stretch
- 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.)
- Pending
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
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
-
- 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
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、粉末材料を気体流の中
に分散させる装置に関する。この装置は、供給パイプ
と、分散手段とを備えている。FIELD OF THE INVENTION The present invention relates to a device for dispersing a powder material in a gas stream. This device comprises a supply pipe and a dispersion means.
【0002】[0002]
【従来の技術】上述の種類の装置は、英国特許明細書第
767,895号及び第953,690号、並びに米国
特許第177,242号及び2,766,880号に開
示されている。BACKGROUND OF THE INVENTION Devices of the type described above are disclosed in British Patent Specification Nos. 767,895 and 953,690 and U.S. Pat. Nos. 177,242 and 2,766,880.
【0003】図1には周知の装置の例が示されており、
この装置は、例えば、材料をセパレータへ搬送する気体
流の中にセメントを分散させるために使用することがで
きる。この周知の装置は、粉末材料を延伸プレート3に
供給するために垂直方向に設けられた供給パイプ1を備
えている。延伸プレートは、供給パイプの端部に該供給
パイプの軸線に直交するように取り付けられている。延
伸プレートは、包囲パイプ5の内側で回転方向において
対称になるように材料を分散させる。上記包囲パイプの
中においては、上方へ流れる気体流が材料をプレート3
から追い出して分散させ、その後気体流は材料をセパレ
ータへ搬送する。An example of a known device is shown in FIG.
This device can be used, for example, to disperse cement in a gas stream that conveys material to a separator. This known device comprises a vertically arranged feed pipe 1 for feeding a powdered material to a stretching plate 3. The stretch plate is attached to the end of the supply pipe so as to be orthogonal to the axis of the supply pipe. The stretch plate distributes the material inside the enclosing pipe 5 symmetrically in the direction of rotation. In the enclosed pipe, an upward gas flow causes the material to plate 3.
Are forced out of and dispersed, after which the gas stream conveys the material to the separator.
【0004】材料は、延伸プレートの側方へ種々の速度
で流れる。延伸プレートの周囲の厚みは、供給される材
料の容積が増大するに連れて大きくなる。噴出される材
料の層の厚みが大きくなり過ぎると、気体流が材料の層
すなわちベッドを追い出して分散させることができなく
なり、これにより、材料は、気体流の中に分散されて該
気体流により搬送されずに、包囲パイプの壁部に集中的
に溜まるか、あるいは包囲パイプから落下するという問
題が生ずることがある。これにより、ある不必要な圧力
損失が生ずる。The material flows laterally of the stretch plate at various rates. The thickness around the stretch plate increases as the volume of material fed increases. If the ejected layer of material becomes too thick, the gas stream will not be able to expel and disperse the layer or bed of material, which will cause the material to be dispersed in the gas stream by the gas stream. There is a problem in that the particles are not transported and are concentrated on the wall of the surrounding pipe or fall from the surrounding pipe. This causes some unnecessary pressure loss.
【0005】[0005]
【発明が解決しようとする課題】本発明の目的は、上述
の欠点を解消するための装置を提供することである。SUMMARY OF THE INVENTION It is an object of the invention to provide a device which overcomes the above mentioned drawbacks.
【0006】[0006]
【課題を解決するための手段】本発明によれば、供給パ
イプと、分散手段とを備え、粉末材料を気体流の中に分
散させる装置において、上記分散手段を少なくとも2つ
の延伸プレートから構成し、これら延伸プレートを、互
いに関してまた上記供給パイプに関して同軸状に設ける
と共に、上記供給パイプの端部において該パイプの軸線
に直交させ且つ軸線に関して軸方向に隔置させて取り付
け、下方の延伸プレートを除く各延伸プレートに、供給
材料の一部が下方の延伸プレートへ移動できるようにす
る中央開口を設けることによって、上述の如き従来技術
の問題点を解消する。According to the present invention, in a device comprising a supply pipe and a dispersing means for dispersing a powder material in a gas stream, said dispersing means comprising at least two stretching plates. , These stretching plates are provided coaxially with respect to each other and with respect to the supply pipe, and are attached at the ends of the supply pipe orthogonal to the axis of the pipe and axially spaced with respect to the axis, the lower stretch plate being Each excluding stretch plate eliminates the problems of the prior art as described above by providing a central opening that allows a portion of the feed material to move to the stretch plate below.
【0007】上述の如き装置により、供給材料は幾つか
のレベルすなわち高さにおいて分配され、これにより、
各延伸プレートの周囲の層の厚みは、延伸プレートの数
に比例して減少する。このようにすると、供給速度が増
大した場合でも、適正なベッドの厚みを維持することが
でき、また、唯一の延伸プレートを備える周知の装置に
比較してベッドの厚みを小さくすることもでき、従っ
て、良好な分散効果を維持するかあるいは分散効果を向
上させることができる。本発明の装置を用いた場合に
は、材料は、比較的薄い層として延伸プレートから流れ
るので、総ての材料は周囲の気体供給パイプの壁部の内
側で分散され、これにより、材料の落下又は再循環が防
止される。また、材料はより均一に分散されるので、材
料のこの均一な分布によって気体が局部的な材料の集積
部を通らない傾向が減少し、従って、分散手段の周囲の
気体の分布及び分散は更に最適なものとなる。By means of a device as described above, the feed material is distributed at several levels or heights, whereby
The thickness of the layers around each stretch plate decreases in proportion to the number of stretch plates. In this way, it is possible to maintain an appropriate bed thickness even when the feed rate is increased, and it is also possible to reduce the bed thickness as compared to known devices having only one stretch plate, Therefore, a good dispersion effect can be maintained or the dispersion effect can be improved. With the device of the present invention, the material flows from the stretch plate as a relatively thin layer so that all of the material is dispersed inside the walls of the surrounding gas supply pipe, which causes the material to fall. Or recirculation is prevented. Also, since the material is more evenly distributed, this uniform distribution of the material reduces the tendency of the gas not to pass through the localized material accumulations, thus further increasing the distribution and distribution of the gas around the dispersion means. It will be optimal.
【0008】種々の延伸プレートを通過する気体流の間
にある程度のタイムラグすなわち時間遅れをもたらし、
これにより、特に供給速度が大きく且つ急速に変化した
場合の気体の充填を円滑にするために、供給パイプの出
口の直径の1乃至3倍、好ましくは2倍の距離だけ延伸
プレートを垂直方向に隔置するのが好ましい。There is some time lag or time delay between the gas flows through the various stretch plates,
This allows the stretching plate to be vertically oriented a distance of 1 to 3 times, preferably twice the diameter of the outlet of the feed pipe, in order to facilitate the filling of the gas, especially when the feed rate is large and changes rapidly. It is preferred that they are spaced.
【0009】材料が個々の延伸プレートに均一に分布す
ることを確実にするために、延伸プレートの開口の断面
積を供給パイプの出口の断面積のn/(n+1)倍に等
しくするのが好ましい。上記nは、下方に位置する延伸
プレートの数である。In order to ensure that the material is evenly distributed on the individual stretch plates, it is preferred that the cross-sectional area of the stretch-plate openings be equal to n / (n + 1) times the cross-sectional area of the outlet of the feed pipe. . The above n is the number of stretching plates located below.
【0010】本発明によれば、延伸プレートを略円形に
するのが更に好ましい。According to the invention, it is further preferred that the stretch plate is substantially circular.
【0011】延伸プレートの分散効果を向上させるため
に、本装置を駆動手段に接続し、上記延伸プレートをそ
れぞれの接続軸線の周囲で回転させることができる。In order to improve the dispersion effect of the stretching plates, the device can be connected to drive means and the stretching plates can be rotated around their respective connecting axes.
【0012】[0012]
【実施例】以下に図面を参照して本発明を詳細に説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
【0013】図2に示す本発明の装置は、材料を供給す
るための出口13を有する供給パイプ11と、材料を分
散させるための3つの延伸プレート15、17、19を
有する分散手段14と、包囲パイプ25とを備えてお
り、上記包囲パイプの中で気体流が上方に流れている。
延伸プレート15、17は各々中央開口16、18を有
しており、一方、下方のプレート19には開口が設けら
れていない。The apparatus of the invention shown in FIG. 2 comprises a feed pipe 11 having an outlet 13 for feeding the material, and a dispersing means 14 having three stretching plates 15, 17, 19 for dispersing the material, The surrounding pipe 25 is provided, and the gas flow flows upward in the surrounding pipe.
Stretching plates 15, 17 have central openings 16, 18 respectively, while the lower plate 19 is not provided with openings.
【0014】供給パイプ11を介して供給される材料
は、出口13から上方の延伸プレート15の上に落下
し、該プレートの上において、材料の一部はプレート1
5の周縁部に向かい且つ該周縁部を越え、気体パイプ2
5の中で上方に流れる気体流の中に入り、気体の中に分
散されて上記気体パイプの中を上方に搬送される。一
方、材料の残りの部分は、開口16を通ってその下の延
伸プレート17の上に落下し、この延伸プレートの上で
は上記延伸プレート15と同様のことが生ずる。材料の
最後の部分は、延伸プレート17の開口18を通って下
方の延伸プレート19に落下し、材料は、該延伸プレー
トから上記延伸プレートにおける場合と同様にして気体
流の中に分散される。The material supplied via the supply pipe 11 falls from the outlet 13 onto the upper stretched plate 15, on which part of the material is part of the plate 1.
5 toward the peripheral edge of the gas pipe 5 and beyond the peripheral edge of the gas pipe 2
5 enters the upwardly flowing gas stream, is dispersed in the gas and is conveyed upward in the gas pipe. On the other hand, the rest of the material falls through the opening 16 and onto the stretch plate 17 below it, on which stretch plate 15 similar to the above stretch plate 15 occurs. The last part of the material falls through the opening 18 in the stretch plate 17 into the lower stretch plate 19, from which the material is dispersed in the gas stream in the same way as in the stretch plate.
【図1】粉末材料を分散させるための周知の装置を示す
側方立面図である。FIG. 1 is a side elevational view showing a known device for dispersing powdered material.
【図2】本発明の装置の実施例を示す側方立面図であ
る。FIG. 2 is a side elevational view showing an embodiment of the device of the present invention.
11 供給パイプ 13 供給パイプ
の出口 14 分散手段 15、17、19
延伸プレート 16、18 中央開口11 Supply Pipe 13 Outlet of Supply Pipe 14 Dispersing Means 15, 17, 19
Stretching plates 16 and 18 Central opening
Claims (5)
の装置において、 供給パイプ(11)と、 分散手段(14)とを備え、 前記分散手段(14)は、少なくとも2つの延伸プレー
ト(15、17、19)を備え、 前記延伸プレートは、互いに関して且つ前記供給パイプ
(11)に関して同軸状に設けられ、 前記延伸プレートは、前記供給パイプ(11)の端部に
該供給パイプの軸線に略直交する状態で且つ軸方向に相
互に隔置された状態で取り付けられ、 最下方の延伸プレートを除く前記延伸プレート(15、
17、19)の各々には、前記供給材料の一部を下方に
ある延伸プレートへ通過させるための中央開口(16、
18)が設けられることを特徴とする装置。1. An apparatus for dispersing powdered material in a gas stream, comprising a supply pipe (11) and a dispersing means (14), said dispersing means (14) comprising at least two stretch plates ( 15, 17, 19), the stretching plates being provided coaxially with respect to each other and with respect to the supply pipe (11), the stretching plate being at an end of the supply pipe (11) the axis of the supply pipe. The stretching plates (15, 15), which are attached in a state of being substantially orthogonal to and axially spaced from each other, except the lowermost stretching plate.
(17, 19) each has a central opening (16, 16) for passing a portion of the feedstock to an underlying stretch plate.
18) is provided.
ート(15、17、19)は、前記供給パイプの出口
(13)の直径の1乃至3倍、好ましくは2倍の距離だ
け、垂直方向に隔置されることを特徴とする装置。2. The device according to claim 1, wherein the stretching plate (15, 17, 19) is vertically oriented at a distance of 1 to 3 times, preferably twice the diameter of the outlet (13) of the supply pipe. A device characterized by being spaced apart.
ート(15、17)の前記開口の断面積は、前記供給パ
イプの出口(13)の断面積のn/(n+1)倍に等し
く、前記nは、下方にある延伸プレートの数であること
を特徴とする装置。3. The device according to claim 1, wherein the cross-sectional area of the opening of the stretch plate (15, 17) is equal to n / (n + 1) times the cross-sectional area of the outlet (13) of the supply pipe. The device, wherein n is the number of stretch plates underneath.
ート(15、17、19)は略円形であることを特徴と
する装置。4. Apparatus according to claim 1, characterized in that the stretching plates (15, 17, 19) are substantially circular.
て、当該装置は、前記延伸プレート(15、17、1
9)をそれぞれの接続軸線の周囲で回転させる駆動手段
に接続されることを特徴とする装置。5. The device according to any one of claims 1 to 4, wherein the device is the stretching plate (15, 17, 1).
Device characterized in that it is connected to drive means for rotating 9) around their respective connection axes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK405/92 | 1992-03-26 | ||
DK040592A DK171128B1 (en) | 1992-03-26 | 1992-03-26 | Device for spreading powdered material in an air stream |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0639258A true JPH0639258A (en) | 1994-02-15 |
Family
ID=8093146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5068553A Pending JPH0639258A (en) | 1992-03-26 | 1993-03-26 | Device for diffusing powdery material into gaseous stream |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPH0639258A (en) |
DE (1) | DE4304508A1 (en) |
DK (1) | DK171128B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7331375B2 (en) | 2001-08-30 | 2008-02-19 | Denso Corporation | Metal molding method and apparatus |
CN107999392A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Molding powder sifter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107999391A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Powder sieving mechanism |
-
1992
- 1992-03-26 DK DK040592A patent/DK171128B1/en not_active IP Right Cessation
-
1993
- 1993-02-15 DE DE4304508A patent/DE4304508A1/en not_active Withdrawn
- 1993-03-26 JP JP5068553A patent/JPH0639258A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7331375B2 (en) | 2001-08-30 | 2008-02-19 | Denso Corporation | Metal molding method and apparatus |
CN107999392A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Molding powder sifter |
Also Published As
Publication number | Publication date |
---|---|
DK171128B1 (en) | 1996-06-24 |
DK40592D0 (en) | 1992-03-26 |
DK40592A (en) | 1993-09-27 |
DE4304508A1 (en) | 1993-09-30 |
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