JPH07309392A - Silo blender - Google Patents
Silo blenderInfo
- Publication number
- JPH07309392A JPH07309392A JP6125789A JP12578994A JPH07309392A JP H07309392 A JPH07309392 A JP H07309392A JP 6125789 A JP6125789 A JP 6125789A JP 12578994 A JP12578994 A JP 12578994A JP H07309392 A JPH07309392 A JP H07309392A
- Authority
- JP
- Japan
- Prior art keywords
- chute
- hopper
- exit
- storage tank
- outlet
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は粉粒体の貯蔵排出時の
分級防止及びサイロブレンダーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silo blender for preventing classification of powder and granules during storage and discharge.
【０００２】[0002]
【従来の技術】従来の技術は貯槽のホッパー内面に接し
た数個所の流入口からホッパー母線にそったシュートを
出口附近まで設けて，その上に出口口径より小さい径の
開口部をもった漏斗を重ねた構造であった。2. Description of the Related Art In the prior art, a funnel having several inlets in contact with the inner surface of the hopper of a storage tank and chutes along the hopper bus line up to the outlet is provided, and an opening having a diameter smaller than the outlet diameter is provided thereon. It was a structure in which
【０００３】[0003]
【発明か解決しようとする課題】貯槽内の粉粒体の流動
特性の説明を交えながら本発明が解決しようとする課題
を箇条書きにすると下記の通りである。 （イ）貯槽からの排出時の分級を少くするには，貯槽の
直径を小さくするか又は出口を多数設けて同時多点排出
方式にしなければならない。 （ロ）従来の構造において貯槽内の流れのパターンにつ
いて説明すると，第３図の漏斗（４）の内側を流下して
口径（Ｄ２）から流下するものと，漏斗口径（Ｄ１）の
外側から流下して隣接するシュートとシュートの間から
流出するものと，シュート内をへて流出するものと３通
りある。 （ハ）出口からの流出量の割合には次の様な原理があ
る。それは第３図の径（Ｄ）の出口面積に占める３通り
の流れのそれぞれの出口の投影面積の割合に正比例する
ことである。これを詳しく説明すると，第２図の斜線で
示す出口の投影面積部（Ａ１）はシュート下端の出口開
口部の投影面積を示し，（Ａ２）は漏斗の出口の投影面
積部を示す，次に原理を数式で説明すると，垂直方向の
流速を単位１とすれば下記の等式で示される。 全流出量＝Ｄ2 π／４＝４Ａ１＋Ａ２＋（Ｄ2 π／４−
４Ａ１−Ａ２） となり，（Ｄ2 π／４−４Ａ１−Ａ２）は隣接するシュ
ートとシュートの間から流出する量を示す。 （ニ）シュートについて説明すると，１例として第２図
ではその数は４本だが，発明者によるモデル実験の結果
から槽の直径が３ｍ級で８本以上，１２ｍ級では１２〜
１６本あった方が混合効果が大きい事がわかっている。
又シュートの入口点の平面位置の配分は各々の隣接間隔
が均等なことが混合効果をあげるのに重要である。 （ホ）混合効果をあげるもう１つの条件は出口開口部の
投影面積の関係を下式の様に設計することである。 Ａ１＝Ａ２＝（Ｄ2 π／４−４Ａ１−Ａ２）／４ ところが上式で設計すると粒体の場合は問題がないが粉
体を取扱う場合に閉塞をおこす危険がある。それは上式
の右辺で示す隣接するシュート間の面積が小さくなり従
って出口での巾がせまくなることが原因である。 （ヘ）以上従来の構造について流動特性と原理と混合効
果増大のための条件をのべたが，流動しにくい粉体を取
扱う場合に閉塞トラブルを解消するためには出口を大き
くすればよいが不都合なことがある。それは仮りに出口
の直径を２倍にすればその下流の管路にレジューサーを
取付けて元の直径まで縮小しなければならない，こうす
ると第４図に示す様に（Ｃ）の部分だけのファヌルフロ
ーになるので流動特性の説明でのべた（ハ）項の原理と
（ホ）項の条件に適合せず混合効果がなくなる。但し
（Ｃ）の状態のファヌルフローを解消する方法として第
４図に示すＥの寸法をＤの１０倍位長くすれば出口
（Ｄ）の断面でマスフローとなり（ハ）項の原理と
（ホ）項の条件に適合するが，実機の設計では機器レイ
アウトで空間ロスが大きくなり設備全体の経済ロスが大
きくなる欠点がある。 （ト）従来の構造では第１図で粉体の堆積表面が（Ｂ）
で示す位置まで降下するとシュートからの流入がなくな
りそれ以後の混合効果が激減する欠点があった。The problems to be solved by the present invention are listed below, together with the description of the flow characteristics of the granular material in the storage tank. (B) In order to reduce the classification at the time of discharging from the storage tank, it is necessary to reduce the diameter of the storage tank or provide multiple outlets for the simultaneous multipoint discharge method. (B) In the conventional structure, the flow pattern in the storage tank will be described. One of which flows down the inside of the funnel (4) and flows down from the diameter (D2) of the funnel and the other of which flows down from the outside of the funnel diameter (D1). Then, there are three types, one that flows out between the adjacent shoots and another that flows out through the inside of the shoots. (C) The ratio of outflow from the outlet has the following principle. That is, it is in direct proportion to the ratio of the projected area of each of the three flows to the outlet area of the diameter (D) in FIG. To explain this in detail, the projected area portion (A1) of the outlet shown by the diagonal lines in FIG. 2 shows the projected area of the outlet opening portion of the lower end of the chute, and (A2) shows the projected area portion of the outlet of the funnel. The principle is described by a mathematical formula, where the unit of the flow velocity in the vertical direction is 1, and is represented by the following equation. Total outflow = D 2 π / 4 = 4A1 + A2 + (D 2 π / 4−
4A1-A2), and (D 2 π / 4-4A1-A2) represents the amount flowing out between adjacent shoots. (D) Explaining shoots, as an example, the number is four in FIG. 2, but from the results of the model experiment by the inventor, the diameter of the tank is 8 or more in the 3 m class, and 12 to 12 in the 12 m class.
It is known that the mixing effect is greater when there are 16 pieces.
Further, the distribution of the plane positions of the chute entrance points is important in that the adjoining intervals are uniform in order to enhance the mixing effect. (E) Another condition for increasing the mixing effect is to design the relationship of the projected area of the outlet opening as shown in the following formula. A1 = A2 = (D 2 π / 4-4A1-A2) / 4 However, if the above formula is used, there is no problem in the case of particles, but there is a risk of blockage when handling powder. This is because the area between the adjacent chutes shown on the right side of the above formula becomes smaller and the width at the exit becomes narrower. (F) Although the flow characteristics and principles of the conventional structure and conditions for increasing the mixing effect are described above, it is inconvenient to increase the outlet in order to eliminate the clogging trouble when handling powder that is difficult to flow. There are things. If the diameter of the outlet is doubled, it is necessary to attach a reducer to the downstream pipe to reduce the diameter to the original diameter. Then, as shown in Fig. 4, the fanul flow only at the portion (C). Therefore, the principle of item (c) and the condition of item (e) in the explanation of the flow characteristics are not met, and the mixing effect disappears. However, as a method of eliminating the fanul flow in the state of (C), if the dimension of E shown in FIG. 4 is made about 10 times longer than D, the flow becomes mass flow at the cross section of the outlet (D), and the principle of the (C) term and the (E) term However, in the actual design, there is a drawback in that the space loss becomes large in the equipment layout and the economic loss of the entire equipment becomes large. (G) In the conventional structure, the powder deposition surface is (B) in FIG.
When it descended to the position indicated by, there was a drawback that the inflow from the shoot disappeared and the mixing effect thereafter drastically decreased.
【０００４】[0004]
【課題を解決するための手段】この発明に係るサイロブ
レンダーは，ホッパー内面に接しかつ母線にそってシュ
ート数本をホッパーの出口附近まで設けて，このシュー
トの下端部上縁に切口が合致する形の多角筒又は円筒を
上から垂直にのせて溶接固定する。又この多角筒の上方
に，円錐殻の下端を各シュートの上面と切口が合致する
形に成形し又円錐殻の下縁近くに数個所の流入口を穴あ
けしたバッフルを定置する。尚多角筒及び円錐殻とシュ
ート上面との接合部には略三角形の板２枚が１辺を共有
する様に向き合って接しカバーを形成しこれを溶接固定
する。次に前項の（ト）の課題を解決するためにシュー
トの側面に開口部を設けて第１図の堆積表面（Ｂ）以下
の状態でのシュートへの２次流入口とする。In the silo blender according to the present invention, several chutes are provided which are in contact with the inner surface of the hopper and along the bus bar up to near the exit of the hopper, and the cuts match the upper edge of the lower end of the chute. Shape polygonal cylinder or cylinder is placed vertically from above and fixed by welding. Above the polygonal cylinder, the lower end of the conical shell is formed so that the upper surface of each chute is aligned with the cut end, and a baffle with several inflow ports is placed near the lower edge of the conical shell. At the joint between the polygonal tube and the conical shell and the upper surface of the chute, two substantially triangular plates face each other so as to share one side and form a cover, which is welded and fixed. Next, in order to solve the problem of (g) in the preceding paragraph, an opening is provided on the side surface of the chute to form a secondary inlet to the chute in a state below the deposition surface (B) in FIG.
【０００５】[0005]
【作用】この発明に係るサイロブレンダーはその特徴と
する作用が２つある。その１つは第５図と第６図に示す
円錐殻に設けた流入口からの流れである。これを第７図
で説明すると，この流入口がない場合は円錐殻の下縁全
周から摺鉢状円錐表面安息角で流下するが，流入口（６
ａ）があるとその位置が円錐殻の下縁より高い位置にあ
るので流れはそのポテンシャルエネルギーによって優先
してこの穴からだけ流入するので，（Ｅ）は滞留層とな
り又流入口の真上はファヌルフロ（Ｆ）となり又流入口
を通過したものは滞留層上の斜面流下層（Ｇ）を経て筒
外の筒側流下層（Ｈ）を下って斜面流下層（Ｊ）となり
出口から排出する。このファヌルフロー（Ｆ）の混合効
果は第１図のシュート（３）のそれと全く同じであり従
って多点排出の数が倍加した作用となる。次の特徴は第
５図に示すシュート（３）の側面の２次流入口（３ａ）
の作用でこのために貯槽の底部まで十分な混合が可能に
なった。尚シュートの頂部から流入が続いている間は２
次流入口からの流入はないことが発明者のモデル実験で
判っている。The function of the silo blender according to the present invention is twofold. One is the flow from the inlet provided in the conical shell shown in FIGS. 5 and 6. Explaining this with reference to FIG. 7, when this inlet is not provided, it flows down from the entire circumference of the lower edge of the conical shell at the angle of repose of the conical surface of the cone, but the inlet (6
With a), its position is higher than the lower edge of the conical shell, so the flow preferentially flows in only from this hole due to its potential energy, so that (E) becomes a retention layer, and just above the inlet is What becomes the funnel flow (F) and passes through the inflow port, passes through the slope downflow layer (G) on the retention layer, goes down the cylinder side downflow layer (H) outside the cylinder, becomes the slope downflow layer (J), and is discharged from the exit. The mixing effect of this fanul flow (F) is exactly the same as that of the chute (3) in FIG. 1, and therefore, it is an action in which the number of multipoint discharges is doubled. The next characteristic is the secondary inlet (3a) on the side surface of the chute (3) shown in FIG.
The effect of this allowed for this to be sufficient mixing up to the bottom of the storage tank. 2 while the inflow continues from the top of the chute
It is known from the inventor's model experiment that there is no inflow from the secondary inlet.
【０００６】[0006]
【実施例】以下，本発明の実施例を図により説明する
と，第５図は本発明の全体を示す側面断面図で（１）は
ホッパー，（２）は出口，（３）は案内管路の角形シュ
ート，（３ａ）はシュートの側面に開口した２次流入
口，（５）は多角筒でその下縁はシュートの上縁と切口
が合致しこの接合部上に粉粒体の残留防止として三角形
の板２枚が１辺を共有する様に向き合って接しカバーを
形成しこれを溶接固定する，又円錐殻（６）の下縁部に
はシュートの数と同じ４個の流入口（６ａ）があり，円
錐殻とシュートの接合部は多角筒の場合と同様にカバー
で溶接固定してある。尚第６図にはシュート，多角筒，
円錐殻，流入口の関係配置が示してある。Embodiments of the present invention will now be described with reference to the drawings. FIG. 5 is a side sectional view showing the whole of the present invention. (1) is a hopper, (2) is an outlet, and (3) is a guide conduit. Square chute, (3a) is a secondary inlet opening on the side surface of the chute, (5) is a polygonal cylinder whose lower edge is aligned with the upper edge of the chute, and prevents the particles from remaining on this joint. The two triangular plates face each other so as to share one side to form a cover, which is welded and fixed, and the lower edge of the conical shell (6) has four inlets (same as the number of chutes). 6a), and the joint between the conical shell and the chute is welded and fixed with a cover as in the case of the polygonal cylinder. In FIG. 6, a chute, a polygonal cylinder,
The relationship between the conical shell and the inlet is shown.
【０００７】[0007]
【発明の効果】出口の口径を大きくすることなく，シュ
ート（３）を倍増することなく，又出口附近でシュート
間隔をせまくすることなく多点排出の数を倍加した混合
効果がえられ，尚排出時の終りに貯槽の底部まで十分な
混合が可能になった。[Effect of the Invention] The mixing effect obtained by doubling the number of multipoint discharges can be obtained without increasing the diameter of the outlet, without doubling the chute (3), and without reducing the chute interval near the outlet. Sufficient mixing was possible to the bottom of the storage tank at the end of discharge.
【図面の簡単な説明】[Brief description of drawings]
【図１】従来の構造を示す全体側面断面図FIG. 1 is an overall side sectional view showing a conventional structure.
【図２】従来の構造を示す全体側面平面図FIG. 2 is an overall side plan view showing a conventional structure.
【図３】従来の構造を示す部分側面断面図FIG. 3 is a partial side sectional view showing a conventional structure.
【図４】従来の構造を示す部分側面断面図FIG. 4 is a partial side sectional view showing a conventional structure.
【図５】本発明の全体側面断面図FIG. 5 is an overall side sectional view of the present invention.
【図６】本発明の全体側面平面図FIG. 6 is an overall side plan view of the present invention.
【図７】本発明の部分側面断面図FIG. 7 is a partial side sectional view of the present invention.
１ ホッパー ２ 出口 ３ シュート ４ 漏斗 Ａ１ シュート下端の出口開口部の投影面積 Ａ２ 漏斗の出口の投影面積 Ｂ 粉体の堆積表面 Ｃ ファヌルフロー部 Ｄ 出口の直径 Ｄ１ 漏斗の上部口径 Ｄ２ 漏斗の下部口径 Ｅ レジューサーの長さ ３ａ ２次流入口 ５ 多角筒 ６ 円錐殻 ６ａ 流入口 Ｆ 滞留層 Ｇ 斜面流下層 Ｈ 筒側流下層 Ｊ 斜面流下層 1 Hopper 2 Outlet 3 Chute 4 Funnel A1 Projected area of outlet opening at the bottom of chute A2 Projected area of outlet of funnel B Powder deposition surface C Fanul flow part D Diameter of outlet D1 Upper diameter of funnel D2 Lower diameter of funnel E re Length of juicer 3a Secondary inlet 5 Polygonal cylinder 6 Conical shell 6a Inlet F Retention layer G Slope downflow layer H Cylinder side downflow layer J Slope downflow layer
Claims (2)
ってシュート（３）をホッパーの出口（２）附近まで設
けて，このシュートの下端部上縁に切口が合致する形状
の多角筒又は円筒（５）をそなえ，この多角筒等の上方
に，流入口（６ａ）をもつ円錐殻（６）をそなえたサイ
ロブレンダーと分級防止装置。1. A polygonal cylinder or a cylinder which is in contact with the inner surface of the hopper of the storage tank and is provided with a chute (3) along the bus bar to a position near the exit (2) of the hopper, and whose cut end matches the upper edge of the lower end of the chute. A silo blender having (5) and a conical shell (6) having an inlet (6a) above the polygonal cylinder and the like, and a classification prevention device.
をもつ，請求項１記載のサイロブレンダーと分級防止装
置。2. An opening (3a) on the side surface of the chute (3).
The silo blender and the classification prevention device according to claim 1, which have a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12578994A JP3356191B2 (en) | 1994-05-16 | 1994-05-16 | Silo blender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12578994A JP3356191B2 (en) | 1994-05-16 | 1994-05-16 | Silo blender |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07309392A true JPH07309392A (en) | 1995-11-28 |
| JP3356191B2 JP3356191B2 (en) | 2002-12-09 |
Family
ID=14918911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12578994A Expired - Fee Related JP3356191B2 (en) | 1994-05-16 | 1994-05-16 | Silo blender |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356191B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964086A (en) * | 2014-05-12 | 2014-08-06 | 张家港市贝尔机械有限公司 | Lifting type bridge breaking device |
| CN105540089A (en) * | 2016-01-29 | 2016-05-04 | 江苏沃尔夫机械有限公司 | Leaning-conical dry powder and dry sand storage tank with segregation prevention device |
| CN105600191A (en) * | 2016-01-29 | 2016-05-25 | 江苏沃尔夫机械有限公司 | Tapered dry-mixed mortar movable type material storage tank with separation-prevention device |
| CN109455419A (en) * | 2018-12-04 | 2019-03-12 | 河南工业大学 | A kind of silo taper changes stream device |
| JP2019137464A (en) * | 2018-02-08 | 2019-08-22 | 株式会社サタケ | Natural flow-down storage container |
| EP3659698A1 (en) * | 2018-11-30 | 2020-06-03 | Aladdin Manufactuing Corporation | Silo for storing pet flakes |
-
1994
- 1994-05-16 JP JP12578994A patent/JP3356191B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964086A (en) * | 2014-05-12 | 2014-08-06 | 张家港市贝尔机械有限公司 | Lifting type bridge breaking device |
| CN105540089A (en) * | 2016-01-29 | 2016-05-04 | 江苏沃尔夫机械有限公司 | Leaning-conical dry powder and dry sand storage tank with segregation prevention device |
| CN105600191A (en) * | 2016-01-29 | 2016-05-25 | 江苏沃尔夫机械有限公司 | Tapered dry-mixed mortar movable type material storage tank with separation-prevention device |
| JP2019137464A (en) * | 2018-02-08 | 2019-08-22 | 株式会社サタケ | Natural flow-down storage container |
| EP3659698A1 (en) * | 2018-11-30 | 2020-06-03 | Aladdin Manufactuing Corporation | Silo for storing pet flakes |
| WO2020113140A1 (en) * | 2018-11-30 | 2020-06-04 | Aladdin Manufacturing Corporation | Silo for storing bulk material |
| CN109455419A (en) * | 2018-12-04 | 2019-03-12 | 河南工业大学 | A kind of silo taper changes stream device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3356191B2 (en) | 2002-12-09 |
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