JPS5913010Y2 - dust collector - Google Patents

Description

【考案の詳細な説明】 本考案は集塵装置に関する。[Detailed explanation of the idea] The present invention relates to a dust collector.

従来の集塵装置としてのサイクロンでは、サイクロン内
に２種の渦流（強制渦流および準自由渦流）が形成され
るため、流れが干渉し合って圧力損失が大きくなり、こ
れら渦流の相互干渉を可及的少なくするためには、大形
になる。In a cyclone used as a conventional dust collector, two types of vortices (forced vortex and quasi-free vortex) are formed within the cyclone, so the flows interfere with each other and increase pressure loss. In order to reduce the impact, the size should be large.

本考案は、粉体の捕集効率がよく、圧力損失を小さくし
、しかも小形化した集塵装置を提供することを目的とす
る。An object of the present invention is to provide a dust collector that has good powder collection efficiency, reduces pressure loss, and is compact.

以下、図面によって本考案の実施例を説明する。Embodiments of the present invention will be described below with reference to the drawings.

第１図は本考案の一実施例の正面図であり、第２図は第
１図の切断面線ＩＩ−ＩＩから見た断面図であり、第３
図は第１図の切断面線ＩＩ−ＩＩＩがら見た断面図であ
る。FIG. 1 is a front view of one embodiment of the present invention, FIG. 2 is a sectional view taken from section line II-II in FIG. 1, and FIG.
The figure is a sectional view taken along section line II-III in FIG. 1.

集塵されるべき粉体を含む気体を導くための上下に延び
る入口ダクト１は、連結部１８を介して筒体２の軸線方
向一端部に連結される。A vertically extending inlet duct 1 for introducing gas containing powder to be collected is connected to one axial end of the cylindrical body 2 via a connecting portion 18 .

この連結部１８は、入Ｆ」ダクｌ−１の筒体２がら離反
した側の側壁１ａに円滑に連続し筒体２に渦巻状に連設
さＩする上半円弧部分１８ ａと、人ロダク１−１の筒
体２寄りの側壁１ｂに連続し筒体２に同一曲率半径を有
して連設される下半円弧部分１８ｂとを備える。This connecting portion 18 includes an upper semicircular arc portion 18a that smoothly continues to the side wall 1a of the duct l-1 on the side away from the cylindrical body 2, and is spirally connected to the cylindrical body 2. It is provided with a lower semicircular arc portion 18b that is continuous with the side wall 1b of the rodac 1-1 near the cylinder body 2 and is connected to the cylinder body 2 with the same radius of curvature.

なお上半円弧部分１８ ａの曲率半径は筒体２に近接す
るにつれて徐々に小とされる。Note that the radius of curvature of the upper semicircular arc portion 18a gradually decreases as it approaches the cylindrical body 2.

このような連結部１８によって、入口ダクト１はいわゆ
るリンデ゛ン状に筒体２に連結される。Through such a connecting portion 18, the inlet duct 1 is connected to the cylinder 2 in a so-called linden shape.

筒体２の軸線方向他端部（第１図の左端部）には、筒体
２よりも小径の筒部４を介して出口ダクト５が連結され
る。An outlet duct 5 is connected to the other end of the cylinder 2 in the axial direction (the left end in FIG. 1) via a cylinder part 4 having a smaller diameter than the cylinder 2.

出口ダクト５は筒体２の旋回接線方向（旋回室３の軸線
に直角な平面−・、の投影円に対する接線方向）上方に
向けられている。The outlet duct 5 is directed upward in the tangential direction of the rotation of the cylinder 2 (the tangential direction to the projection circle of the plane perpendicular to the axis of the swirling chamber 3).

筒体２の軸線方向両端部は、端壁６，７によって封じら
れる。Both ends of the cylindrical body 2 in the axial direction are sealed by end walls 6 and 7.

筒体２の内面には気体の旋回方向に沿って螺旋状の案内
板２５が設けられる。A spiral guide plate 25 is provided on the inner surface of the cylinder 2 along the swirling direction of the gas.

筒体２の下部には、下すぼまりの中空の錐体８が筒体２
の軸線方向全長にわたって連結されている。At the bottom of the cylindrical body 2, a hollow cone 8 with a concave lower part is attached to the cylindrical body 2.
are connected over their entire axial length.

この錐体８は、はぼ四角錐の形状を有し、旋回室３がら
その旋回接線方向に沿う斜め下向きに延びる内壁部分８
ａど、内壁部分８ａに対向しがっ旋回室３がらその旋回
接線方向に沿う下向きに延びる内壁部分８ｂと、側内壁
部分８ａ、８ｂに直角で下方にゆくにつれて相互に近接
して斜め下向きに延びる相互に対向した内壁部分８Ｃ，
８ｄとを含む。This cone 8 has an almost quadrangular pyramid shape, and an inner wall portion 8 extends obliquely downward from the swirling chamber 3 along the tangential direction of the swirling chamber 3.
an inner wall portion 8b facing the inner wall portion 8a and extending downward along the tangential direction of the rotation of the rotating chamber 3; mutually opposing inner wall portions 8C extending;
8d.

錐体８の１・部には、捕集筒９が連結される。A collecting cylinder 9 is connected to one part of the cone 8 .

錐体８の上方には、旋回案内板１０が筒体２の軸線方向
全長にわたって設けられろ。A rotation guide plate 10 is provided above the cone 8 over the entire length of the cylinder 2 in the axial direction.

この旋回案内板１０は、筒体２の内壁と（Ｊぼ同一の曲
率を有して彎曲し筒体２の円周上またはその内周部に配
置されている。The turning guide plate 10 is curved with the same curvature as the inner wall of the cylinder 2 and is arranged on the circumference of the cylinder 2 or on the inner circumference thereof.

旋回案内板１０の旋回方向上流側と下流側どには、旋回
室３および錐体８を相互に連通ずる開口部１１．１２が
それぞれ形成されている。Openings 11 and 12 are formed on the upstream and downstream sides of the pivoting guide plate 10 in the pivoting direction, respectively, to allow the pivoting chamber 3 and the cone 8 to communicate with each other.

この開口部１１．１２は、筒体２の軸線方向全長にわた
って延びる。This opening 11.12 extends over the entire axial length of the cylinder 2.

錐体８内において、旋回案内板１ｏには、旋回方向上流
側の開口部１１寄りで捕集案内板１３の上端部が連接さ
れる。In the cone 8, the upper end portion of the collection guide plate 13 is connected to the rotation guide plate 1o near the opening 11 on the upstream side in the rotation direction.

この捕集案内板１３は、内壁部分８ａに平行で、内壁部
分８ａとの間に空間１４を形成、して斜め下方に延設さ
れ、その下端部１３ ａは第３図に示すように錐体８の
下端部がら間隔１１を隔てた上方に位置される。This collection guide plate 13 is parallel to the inner wall portion 8a, forms a space 14 between the inner wall portion 8a, and extends diagonally downward, and its lower end 13a has a conical shape as shown in FIG. It is located above the lower end of the body 8 with a distance 11 therebetween.

捕集案内板１３は、錐体８内で筒体２の軸線に平行に内
壁部分８Ｃ，８ｄ間にわたって設けられる。The collection guide plate 13 is provided within the cone 8 in parallel to the axis of the cylinder 2 and extends between the inner wall portions 8C and 8d.

この捕集案内板１３によって、錐体８の内部には、旋回
方向−上流側の開口部１１に連通した空間１４と、旋回
方向下流側の開口部１２に連通した空間１６とが形成さ
れる。This collection guide plate 13 forms within the cone 8 a space 14 communicating with the opening 11 on the upstream side of the rotation direction, and a space 16 communicating with the opening 12 on the downstream side of the rotation direction. .

錐体８内で筒体２の軸線に沿う中央位置に、筒体２の軸
線に直角な仕切板２４が、内壁部分８ａ。A partition plate 24 perpendicular to the axis of the cylinder 2 is located at a central position within the cone 8 along the axis of the cylinder 2 as an inner wall portion 8a.

８ｂ間にわたって設けられる。8b.

この仕切板２４は、内壁部分８ａと捕集案内板１３との
空間１４を２つの空間１４ ａ、 １４ ｂに２分割す
る。This partition plate 24 divides the space 14 between the inner wall portion 8a and the collection guide plate 13 into two spaces 14a and 14b.

また捕集案内板１３、内壁部分８ｂ、 ８ｃ、８ｄお
よび旋回案内板１０によって規定される空間１６は、仕
切板２４によって２つの空間１６ａ、１６ｂに分割さｔ
ｌ−る。Further, the space 16 defined by the collection guide plate 13, the inner wall portions 8b, 8c, 8d, and the turning guide plate 10 is divided into two spaces 16a, 16b by a partition plate 24.
l-ru.

内壁部分８ｂには、筒体２の軸線に平行な衝突板２３が
内壁部分８Ｃ，８ｄにわたって設けられる。A collision plate 23 parallel to the axis of the cylinder 2 is provided on the inner wall portion 8b and extends over the inner wall portions 8C and 8d.

この衝突板２３は空間１６ａ、１６ｂの内方に向けて斜
め下向きに突出され、その下端部２３ ａは捕集案内板
１３の下端部Ｉ３ａよりも上方に位置される。The collision plate 23 projects obliquely downward inwardly into the spaces 16a and 16b, and its lower end 23a is located above the lower end I3a of the collection guide plate 13.

集塵すべき粉体を含んだ気体は、入口ダクト１内を上昇
し、筒体２の旋回室３に導入される。Gas containing powder to be collected rises in the inlet duct 1 and is introduced into the swirling chamber 3 of the cylindrical body 2.

この際、人１」ダクト１と筒体２とは連結部１８を介し
てリンデン状に連結されているので、連結部１８におけ
る気体の旋回半径と旋回室３の旋回半径とが異なり、気
体は比較的大なる旋回半径を有して筒体２内に導入され
る。At this time, since the duct 1 and the cylinder body 2 are connected in a linden shape via the connecting part 18, the radius of gas swirling in the connecting part 18 and the radius of swirling in the swirling chamber 3 are different, and the gas It is introduced into the cylinder 2 with a relatively large turning radius.

したがって連結部１８において気体中の粉粒体には遠心
力が大きく作用し、それによって集塵作用が促進される
。Therefore, a large centrifugal force acts on the powder in the gas at the connecting portion 18, thereby promoting dust collection.

しかも連結部１８の旋回半径は徐々に小となるので、気
体は連結部１８から旋回室３内に円滑に導入されること
になり、旋回室３内の気体の旋回流と連結部１８からの
導入気体とが相互に干渉することが極力防止され、る。Moreover, since the swirling radius of the connecting portion 18 gradually becomes smaller, the gas is smoothly introduced into the swirling chamber 3 from the connecting portion 18, and the swirling flow of the gas in the swirling chamber 3 and from the connecting portion 18 are Mutual interference with the introduced gas is prevented as much as possible.

したがって旋回室３内の旋回流が乱されることがなく、
それによっても集塵効率が向上する。Therefore, the swirling flow in the swirling chamber 3 is not disturbed,
This also improves dust collection efficiency.

旋回案内板１０は筒体２の内壁とほぼ゛同一曲率で彎曲
されているので、旋回室３内において、気体は旋回案内
板１０によって流れを乱されることなく螺旋状の軌跡を
描き、たとえば３回程度旋回して、筒部４を介して出口
ダクト５から排出される。Since the swirling guide plate 10 is curved with approximately the same curvature as the inner wall of the cylinder 2, the gas in the swirling chamber 3 draws a spiral trajectory without being disturbed by the swirling guide plate 10, for example. It turns about three times and is discharged from the outlet duct 5 via the cylindrical part 4.

この気体の旋回によって、旋回方向下流側の開口部１２
付近の圧力は、旋回方向上流側の開口部１１付近に比べ
て低くなる。This swirling of gas causes the opening 12 on the downstream side in the swirling direction to
The pressure in the vicinity is lower than that in the vicinity of the opening 11 on the upstream side in the turning direction.

そのため旋回室３内で旋回している気体の一部は、開口
部１１から空間１４および空間１６を経て開口部１２で
吸引される。Therefore, a part of the gas swirling within the swirling chamber 3 is sucked into the opening 12 through the opening 11, the space 14, and the space 16.

旋回室３内における気体の旋回によって、気体に含まれ
る粉体は遠心力を受は筒体２の内壁近傍に寄せられる。Due to the swirling of the gas in the swirling chamber 3, the powder contained in the gas is subjected to centrifugal force and is drawn near the inner wall of the cylindrical body 2.

したがって筒体２の内壁近傍には粉体が高濃度で偏在す
る。Therefore, powder is unevenly distributed near the inner wall of the cylinder 2 at a high concentration.

この高濃度の粉体を含む気体は、先ず開口部１１の入口
ダクト１寄りの部分から空間１４ ａ内に導入されて下
降する。This gas containing highly concentrated powder is first introduced into the space 14a from the part of the opening 11 closer to the inlet duct 1 and descends.

錐体８は下すぼまりに形成されているので、粉体を含む
気体の下降速度は増大され、したがって粉体は下向きの
慣性力によって捕集筒９内に効率よく落下して排出され
る。Since the cone 8 is formed into a downward concave, the descending speed of the gas containing the powder is increased, and therefore the powder efficiently falls into the collection tube 9 and is discharged by the downward inertial force.

空間１４ａ内を下降してきた気体は、捕集案内板１３の
下端部１３ ａ付近から反転して空間１６ ａ内を上昇
する。The gas that has descended within the space 14a reverses from near the lower end 13a of the collection guide plate 13 and rises within the space 16a.

空間１６ ａは上方に向うにつれて広く形成されている
ので、気体の上昇速度が減小され、これによっても粉体
の捕集効率が向上される。Since the space 16a is formed to become wider as it goes upward, the rate of rise of gas is reduced, which also improves the powder collection efficiency.

空間１６ ａを上昇した気体は開口部１２の入口ダクト
１寄りの部分から旋回室３内に戻される。The gas that has ascended through the space 16a is returned into the swirling chamber 3 from a portion of the opening 12 closer to the inlet duct 1.

筒体２の内面に設けられた螺旋状の案内板２５によって
気体の旋回力は助長される。The swirling force of the gas is promoted by a spiral guide plate 25 provided on the inner surface of the cylinder 2.

特に旋回室３の後端部で気体の旋回力が低下するのを防
止することができ、気体の旋回による遠心力によって旋
回室３内の内面に寄せられた粉粒体は、案内板２５を伝
わって錐体８内に落下するので、粉粒体の再飛散を防止
することができる。In particular, it is possible to prevent the swirling force of the gas from decreasing at the rear end of the swirling chamber 3, and the powder and granules gathered on the inner surface of the swirling chamber 3 due to the centrifugal force caused by the swirling of the gas can be prevented from moving through the guide plate 25. Since the particles are transmitted and fall into the cone 8, re-scattering of the powder particles can be prevented.

また開口部１１の出口ダクト５寄りの部分から空間１４
ｂ内に導入された気体は、空間１６ ｂを経て開口部１
２の出口ダクト５寄りの部分から旋回室３内に戻される
。Also, from the part of the opening 11 near the outlet duct 5 to the space 14
The gas introduced into the space 16b passes through the opening 1
It is returned into the swirling chamber 3 from the part near the outlet duct 5 of No. 2.

そのため高濃度の粉体を含む気体が出ロダク１〜５に短
絡して流れることが防止され、旋回室３内での気体の所
定回数たとえば３回程度の旋回が確実に達成され、捕集
効率が向上することになる。Therefore, gas containing highly concentrated powder is prevented from flowing through the output chambers 1 to 5 through a short circuit, and swirling of the gas within the swirling chamber 3 for a predetermined number of times, for example, about three times, is reliably achieved, and the collection efficiency is increased. will improve.

さらに、空間１４ ａ、 １４ ｂを降下してきた気体
の下向きの慣性力によって分離されえなかった残余の粉
体は衝突板２３に衝突する。Furthermore, the remaining powder that could not be separated due to the downward inertial force of the gas that has descended through the spaces 14 a and 14 b collides with the collision plate 23 .

これによって粉体が空間１６ａ、１６ｂ内を上昇するこ
とが極力防止され、捕集効率が向上される。This prevents the powder from rising inside the spaces 16a, 16b as much as possible, improving collection efficiency.

それと同時に、捕集案内板１３の下端部１３ ａ付近か
ら反転上昇する気体の流れの軌跡の半径Ｒが衝突板２３
によって小さくなる。At the same time, the radius R of the trajectory of the gas flow that reverses upward from the vicinity of the lower end 13 a of the collection guide plate 13
becomes smaller by

そのため気体に含まれる粉体に作用する遠心力が増大し
、粉体の落下が促進される。Therefore, the centrifugal force acting on the powder contained in the gas increases, and the falling of the powder is promoted.

入口ダクト１の筒体２側の側壁部分が、筒体２の外周に
段差３２を威して連結されているので、気体が入口ダク
ト１から筒体２内に接線方向で導入されるときに気体中
の粉体は段差３２に寄せられる。The side wall portion of the inlet duct 1 on the cylinder body 2 side is connected to the outer periphery of the cylinder body 2 with a step 32, so that when gas is tangentially introduced into the cylinder body 2 from the inlet duct 1, Powder in the gas is gathered to the step 32.

そのため気体が筒体２内で旋回されながら出口ダクト５
側に流過していくとき、筒体２内には粉体の高濃度部分
が螺旋状に形成される。Therefore, while the gas is swirled within the cylinder 2, the outlet duct 5
As the powder flows to the side, a high concentration part of the powder is formed in a spiral shape inside the cylinder 2.

そこで、旋回方向上流側の開口部１１に、筒体２の軸線
方向に間隔をあけて、筒体２の軸線方向に移動自在な閉
止板３３が設けられる。Therefore, a closing plate 33 that is movable in the axial direction of the cylinder body 2 is provided in the opening 11 on the upstream side in the turning direction at intervals in the axial direction of the cylinder body 2 .

この閉止板３３を粉体濃度が低い個所に固定することに
よって、高濃度の粉体を含む小量の気体を開口部１１か
ら空間１４に導入して、粉体を効率良く捕集することが
できる。By fixing this closing plate 33 at a location where the powder concentration is low, a small amount of gas containing a high concentration of powder can be introduced into the space 14 from the opening 11 and the powder can be efficiently collected. can.

第７図および第８図は本件考案者の実験結果を示す。FIG. 7 and FIG. 8 show the experimental results of the present inventor.

ライン７１．７４は本考案に従って衝突板２３と閉止板
３３を設けた場合を示し、参考のために、ライン７２．
７５は両者２３．３３が設けられない場合を示し、ライ
ン７３．７６は閉止板３３のみを設けかつ衝突板２３を
設けない場合を示す。Lines 71.74 show the case where the collision plate 23 and the closing plate 33 are provided according to the present invention, and for reference, lines 72.
Line 75 shows the case where both 23 and 33 are not provided, and line 73 and 76 shows the case where only the closing plate 33 is provided and the collision plate 23 is not provided.

この実験結果によれば、衝突板２３と閉止板３３とを設
けることによって、第８図のように圧力損失をほとんど
増大することなしに、捕集効率を大幅に向上することが
できることが判る。The experimental results show that by providing the collision plate 23 and the closing plate 33, the collection efficiency can be greatly improved without substantially increasing the pressure loss as shown in FIG.

本考案に従う構成におけるこの圧力損失は、在来のサイ
クロンに比べて充分低い。This pressure loss in the configuration according to the invention is sufficiently low compared to conventional cyclones.

この圧力損失が低い理由は、（ａ）下すぼまりの錐体８
の空間１４に流入する含塵ガス量が閉止板３３によって
少なくされ、（ｂ）シかも旋回案内板１０が閉止板３３
によって筒体２の壁面となめらかに連なるので、旋回ガ
ス流の乱れが一層抑えられるからである。The reason for this low pressure loss is that (a) the cone with the cone 8
The amount of dust-containing gas flowing into the space 14 is reduced by the closing plate 33;
This is because the turbulence of the swirling gas flow can be further suppressed since it is smoothly connected to the wall surface of the cylindrical body 2.

なお開口部１１の幅ｄ１は、旋回室３内に導入される気
体中の粉体濃度が比較的高いときに大とし、また粉体濃
度が比較的低いときに小とする。Note that the width d1 of the opening 11 is made large when the powder concentration in the gas introduced into the swirling chamber 3 is relatively high, and is made small when the powder concentration is relatively low.

そうすることによって、空間１４ ａ、 １４ ｂ内に
導入される気体量を可及的に小さく抑えて空間１４ａ。By doing so, the amount of gas introduced into the spaces 14a and 14b is kept as small as possible.

１４ｂ内に導入される気体中の粉体濃度を高濃度とし、
錐体８内で粉体を効率良く捕集する。The powder concentration in the gas introduced into 14b is set to a high concentration,
Powder is efficiently collected within the cone 8.

筒部４の端部４ａは、旋回室３内に突出されており、し
たがって高濃度の粉体を含む気体が筒部４内に排出され
ることは防止される。The end portion 4a of the cylindrical portion 4 protrudes into the swirling chamber 3, so that gas containing highly concentrated powder is prevented from being discharged into the cylindrical portion 4.

なお、筒部４の端部４ａは、筒体２内に向けて先細りま
たは末広がりの円錐形であってもよい。Note that the end portion 4a of the cylindrical portion 4 may have a conical shape that tapers toward the inside of the cylindrical body 2 or widens toward the end.

また出口ダクト５は、筒部４を介して筒体２の旋回接線
方向に取付けられているので、旋回室３内から気体を円
滑に排出することができ、圧力損失がさらに小さくされ
る。Further, since the outlet duct 5 is attached in the direction tangential to the rotation of the cylinder 2 via the cylinder part 4, gas can be smoothly discharged from the inside of the rotation chamber 3, and pressure loss can be further reduced.

また出口ダクト５内で゛は、気体が旋回することなく直
進するので、出口ダクト５内に粉体を投入して清浄気体
との向流熱交換を行なわせるような場合には、粉体が出
口ダクト５内で均一に分散されやすく、熱交換効率を向
上させることができる。Also, in the outlet duct 5, the gas travels straight without swirling, so when powder is introduced into the outlet duct 5 to perform countercurrent heat exchange with clean gas, the powder It is easy to be uniformly dispersed within the outlet duct 5, and the heat exchange efficiency can be improved.

第１図〜第３図の実施例では、錐体８の内壁部分８ａと
捕集案内板１３を平行にして空間１４ａ。In the embodiment shown in FIGS. 1 to 3, the inner wall portion 8a of the cone 8 and the collection guide plate 13 are made parallel to each other to create a space 14a.

１４ ｂ内を下降する気体の速度を増大させている。14 b, increasing the velocity of the gas descending within b.

この気体の下降速度が大き過ぎると、気体の流通抵抗が
大きくなって空間１４ａ、１４ｂ内に気体が導入され難
くなったり、あるいは捕集案内板１３の下端部１３ ａ
で気体が反転するときに粉体が捕集筒９内に落下せずに
空間１６ａ、１６ｂの−Ｅ方に再飛散されてしまう恐れ
がある。If the descending speed of the gas is too high, the gas flow resistance becomes large and it becomes difficult to introduce the gas into the spaces 14a and 14b, or the lower end 13a of the collection guide plate 13
When the gas is reversed, there is a risk that the powder will not fall into the collecting tube 9 and will be scattered again in the -E direction of the spaces 16a and 16b.

これを防ぐために、捕集案内板１３の下端部１３ ａと
内壁部分８ａとの間隙ｄ２（第３図参照）を、開口部１
１の幅ｄ１よりも大きくして、気体の下降速度を調整し
てもよい。In order to prevent this, the gap d2 (see FIG. 3) between the lower end 13a of the collection guide plate 13 and the inner wall portion 8a is
The downward speed of the gas may be adjusted by making the width larger than the width d1 of 1.

本考案の他の実施例として捕集案内板１３を短くしてそ
の下端部１３ ａと錐体８の下端部との間隔を第１図〜
第３図の実施例の間隔１１よりも大きく選び、下端部１
３が錐体８の上部に位置されるようにしてもよい。In another embodiment of the present invention, the collecting guide plate 13 is shortened and the distance between its lower end 13a and the lower end of the cone 8 is increased.
The lower end 1 is selected to be larger than the spacing 11 in the embodiment shown in FIG.
3 may be located at the top of the cone 8.

また筒体２の軸線は水平に限られることなく、据付場所
に応じて傾斜させてもよい。Further, the axis of the cylindrical body 2 is not limited to being horizontal, but may be inclined depending on the installation location.

さらに内壁部分８Ｃは、第１図の二点鎖線で示す８０′
、８Ｃ″のように配置してもよい。Furthermore, the inner wall portion 8C is 80' indicated by the two-dot chain line in FIG.
, 8C''.

案内板２５に代えて筒体２の内面に凹溝を螺旋状に形成
してもよく、また案内板２５は断続的に螺旋状に設けら
れてもよい。Instead of the guide plate 25, a concave groove may be formed in a spiral shape on the inner surface of the cylinder 2, or the guide plate 25 may be provided intermittently in a spiral shape.

本考案の他の実施例として、第４図のごとく筒体２の軸
線方向に間隔をあけて複数の円環状の案内板２６を筒体
２の内面に固着してもよい。As another embodiment of the present invention, a plurality of annular guide plates 26 may be fixed to the inner surface of the cylinder 2 at intervals in the axial direction of the cylinder 2, as shown in FIG.

このようにしても第１図〜第３図の実施例と同様の効果
を得ることができる。Even in this case, effects similar to those of the embodiments shown in FIGS. 1 to 3 can be obtained.

第５図は、本件集塵装置をセメント原料焼成装置に多段
化し７て用いた場合の全体の正面図であり、第６図はそ
の側面図である。FIG. 5 is an overall front view of the present dust collecting device used in a cement raw material firing device in multiple stages, and FIG. 6 is a side view thereof.

集塵装置５０．５１’。５２は、最上段のサイクロン５
３および最下段のサイクロン５４とともに、サスペンシ
ョンプレヒータを構成する。Dust collector 50.51'. 52 is the top cyclone 5
3 and the lowermost cyclone 54 constitute a suspension preheater.

原料粉体は、その経路が実線矢符で示されるように、ダ
クト５５に投入された後、下方からの熱ガスに吹上げら
れて熱交換され、サイクロン５３で捕集されてダクト５
６に落下する。The raw material powder is introduced into the duct 55 as shown by the solid line arrow, and then blown up by the hot gas from below for heat exchange, collected by the cyclone 53, and sent to the duct 5.
Fall to 6.

以後、ダクト５６→集塵装置５０→ダクト５７→集塵装
置５１→ダクト５８→集塵装置５２→仮焼炉５９に至り
、脱炭酸される。Thereafter, the gas flows through the duct 56 → the dust collector 50 → the duct 57 → the dust collector 51 → the duct 58 → the dust collector 52 → the calcining furnace 59, and is decarboxylated.

仮焼炉５９で仮焼された原料粉体は、ダクト６０を経て
サイクロン５４に導かれて捕集され、ロータリキルン６
１に送入される。The raw material powder calcined in the calcining furnace 59 is guided to the cyclone 54 through a duct 60 and collected, and then transferred to the rotary kiln 6.
1.

ロータリキルン６１では、原料粉体が焼成されてクリン
カとなり、クリンカクーラ６２で冷却されて製品となる
。In the rotary kiln 61, raw material powder is fired to become clinker, which is cooled in a clinker cooler 62 to become a product.

熱ガスは、その経路が破線矢符で示される。The path of hot gas is indicated by a dashed arrow.

ロータリキルン６１からの燃焼排ガスは、クリンカクー
ラ６２からダクト６３を経て抽気された高温の燃焼用２
次空気とともに仮焼炉５９に導入される。Combustion exhaust gas from the rotary kiln 61 is extracted from a clinker cooler 62 through a duct 63,
It is introduced into the calcining furnace 59 together with the next air.

仮焼炉５９からの熱ガスは、ダク） ６０→サイクロン
５４→ダクト５８→集塵装置５２→ダクト５７→集塵装
置５１→ダクト５６→集塵装置５０→ダクト５５→サイ
クロン５３の経路で導かれて、原料粉体と熱交換して誘
引送風機６４から排出される。The hot gas from the calcining furnace 59 is guided through the path of duct 60 → cyclone 54 → duct 58 → dust collector 52 → duct 57 → dust collector 51 → duct 56 → dust collector 50 → duct 55 → cyclone 53. The powder is then discharged from the induced blower 64 after exchanging heat with the raw material powder.

集塵装置５０．５１．５２は、従来からのサイクロンに
比べて前述のように小形である。The dust collectors 50, 51, 52 are, as mentioned above, small in size compared to conventional cyclones.

そのためたとえば図示のごとくサスペンションプレヒー
タヲ５段５３．５０．５１．５２．５４で構成しても、
従来の４段サイクロンで構成されたサスペンションプレ
ヒータと同等またはそれより小さく構成することができ
る。Therefore, for example, even if the suspension preheater is configured with five stages 53.50.51.52.54 as shown in the figure,
It can be configured to be smaller than or equal to a suspension preheater configured with a conventional four-stage cyclone.

サスペンションプレヒータを５段で構成することによっ
て熱交換性が向上され、しかも集塵装置５０．５１．５
２の圧力損失が比較的小さいので、誘引送風機６４の動
力を低減することができる。By configuring the suspension preheater in five stages, heat exchange performance is improved, and the dust collector 50.51.5
Since the pressure loss of 2 is relatively small, the power of the induced blower 64 can be reduced.

また最上段のサイクロン５３および最下段のサイクロン
５４の間に集塵装置５０．５１．５２の他に、本考案に
係る他の集塵装置をもう１段加えて６段とすれば、さら
に熱交換性が向上され、しかも従来の４段サイクロンで
構成されたサスペンションプレヒータと同等の大きさに
構成することができる。Furthermore, if another dust collector according to the present invention is added in addition to the dust collectors 50, 51, and 52 between the top cyclone 53 and the bottom cyclone 54, the heat will increase even further. Replaceability is improved, and the suspension preheater can be constructed in the same size as a conventional suspension preheater composed of a four-stage cyclone.

上述のごとく本考案では、円形または気体の旋回に支障
のない程度の角形断面を有し横方向に延びる旋回室を形
成する筒体を設け、気体を旋回室内に接線方向で導入し
、気体が旋回室内を旋回しながら軸線方向に流過するよ
うにしたので、サイクロンのように２種の渦流の干渉が
なくしたがって圧力損失を小さくすることができる。As described above, in the present invention, a cylindrical body is provided which forms a swirling chamber that has a circular or rectangular cross section that does not hinder the swirling of the gas and extends in the horizontal direction, and gas is introduced into the swirling chamber in a tangential direction. Since the fluid flows in the axial direction while swirling in the swirling chamber, there is no interference between two types of vortex flows as in a cyclone, and therefore pressure loss can be reduced.

また筒体の下部に下すぼまりの中空器体を固着し、旋回
方向上流側の開口部から捕集案内板によって気体を器体
内に強制的に導いて粉体を分離するようにしたので、自
由落下で粉体を分離するサイクロンに比べて本件集塵装
置を小形化することができる。In addition, a hollow vessel body with a depression is fixed to the bottom of the cylinder, and the powder is separated by forcibly guiding gas into the vessel from the opening on the upstream side in the direction of rotation using a collection guide plate. Compared to a cyclone that separates powder by free fall, this dust collector can be made smaller.

しかも器体内部を仕切板によって２分割したので、気体
を筒体内で確実に旋回させることができ、高濃度の粉体
を含む気体が入口から出口に短絡して流れることが防止
され捕集効率が向上する。Moreover, since the inside of the container is divided into two by a partition plate, the gas can be reliably swirled within the cylinder, preventing gas containing high concentration of powder from short-circuiting and flowing from the inlet to the outlet, increasing the collection efficiency. will improve.

また人口ダクトを、渦巻状に徐々に半径が小となる上半
円弧部分および筒体と同一半径の下半円弧部分を備える
連結部を介して、筒体の軸線方向一端部に連結したので
、連結部において粉粒体に大なる遠心力が作用し、集塵
装置が向上するとともに、旋回室内での旋回流が乱され
ることがないので、それによっても集塵効率が向上する
。In addition, since the artificial duct was connected to one end in the axial direction of the cylindrical body through a connecting part that had an upper semicircular arc portion whose radius gradually became smaller in a spiral shape and a lower semicircular arc portion with the same radius as the cylindrical body, A large centrifugal force acts on the granular material at the connecting portion, improving the dust collection device, and since the swirling flow in the swirling chamber is not disturbed, the dust collection efficiency is also improved.

さらに筒体の内面に突起または溝を設けたので気体の旋
回力が助長され、集塵効率が向上する。Furthermore, since the protrusions or grooves are provided on the inner surface of the cylindrical body, the swirling force of the gas is promoted, and the dust collection efficiency is improved.

しかも本考案では、錐体の旋回方向下流側で、前記旋回
案内板よりも下方の錐体内壁部分に、下端部が前記捕集
案内板の下端部よりも上方に位置するように斜め下向き
に突出し、かつ前記筒体の軸線に平行な衝突板を固着し
、旋回室と錐体の内部空間とを連通ずる旋回方向上流側
の開口部には、筒体の軸線方向に移動可能な閉止板を、
筒体の軸線方向に間隔をあけて設けたので、圧力損失を
低く抑えたままで、捕集効率を一層向上することができ
るようになる。Moreover, in the present invention, on the downstream side in the turning direction of the cone, a portion of the inner wall of the cone below the turning guide plate is tilted downward so that the lower end is located above the lower end of the collecting guide plate. A collision plate that protrudes and is parallel to the axis of the cylinder is fixed, and a closing plate that is movable in the axis of the cylinder is provided at an opening on the upstream side in the rotation direction that communicates the rotation chamber and the internal space of the cone. of,
Since they are provided at intervals in the axial direction of the cylinder, the collection efficiency can be further improved while keeping pressure loss low.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例の正面図、第２図は第１図の
切断面線ＩＩ −ＩＩから見た断面図、第３図は第１図
の切断面線ＩＩＩ−ＩＩＩから見た断面図、第４図は本
考案の他の実施例を示す断面図、第５図は本件集塵装置
をセメンＩ・原料焼成装置に多段化して用いた場合の全
体の正面図、第６図は第５図の側面図、第７図は本考案
の実験結果の捕集効率を示すグラフ、第８図は本考案の
実験結果の圧損係数を示すグラフである。 １・・・入口ダクト、２・・・筒体、３・・・旋回室、
４・・・筒部、５・・・出ロダクＩ・、８・−・錐体、
８ａ、 ８ｂ。 ８Ｃ５８ｄ・・・内壁部分、１０・・・旋回案内板、１
１．１２・・・開口部、１３−・・捕集案内板、１４．
１４ａ、 １４ｂ、 １６゜１６ ａ、 １６ ｂ・・
・空間、２３・・・衝突板、２４・・・仕切板、２５・
・・案内板、３３・・・閉止板、５０．５１．５２・・
・集塵装置。FIG. 1 is a front view of one embodiment of the present invention, FIG. 2 is a sectional view taken from section line II-II in FIG. 1, and FIG. 3 is a sectional view taken from section line III-III in FIG. 1. 4 is a sectional view showing another embodiment of the present invention, FIG. 5 is an overall front view when the present dust collector is used in multiple stages in a cement I/raw material firing device, and FIG. 6 is a sectional view showing another embodiment of the present invention. The figure is a side view of FIG. 5, FIG. 7 is a graph showing the collection efficiency of the experimental results of the present invention, and FIG. 8 is a graph showing the pressure drop coefficient of the experimental results of the present invention. 1... Inlet duct, 2... Cylindrical body, 3... Turning chamber,
4... Cylindrical part, 5... Rodac I, 8... Cone,
8a, 8b. 8C58d...Inner wall portion, 10...Turning guide plate, 1
1.12...Opening part, 13-...Collection guide plate, 14.
14a, 14b, 16°16a, 16b...
・Space, 23... Collision plate, 24... Partition plate, 25.
...Guide plate, 33...Closing plate, 50.51.52...
・Dust collector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 円形または気体の旋回に支障のない程度の多角形断面を
有し、横方向に延びる旋回室を形成する筒体の軸線方向
一端部に、渦巻状に徐々に半径が小となる上半円弧部分
および前記筒体と同一半径の下半円弧部分を備える連結
部を介して、上下に延びる入口ダクトを連結し、軸線方
向他端部には、出口ダクトをその端部が筒体内に突出さ
せて連結し、筒体の下部には、筒体内壁から接線方向に
延びる内壁部分を有する下すぼまりの中空錐体を固着し
、旋回室と錐体内部空間との境界付近には、旋回方向上
流側と下流側とで、旋回室と錐体内部空間とを連通ずる
開口部をそれぞれ形威し、旋回室の内面とほぼ同一の曲
率を有して彎曲された旋回案内板と、上端部が旋回方向
上流側で旋回案内板に固着されかつ錐体の旋回方向上流
側の内壁部分との間に空間を形成するようにして錐体の
下端部から間隔を隔てた上方位置まで斜め下方に延設し
た捕集室内板とを設け、前記錐体の内部空間を筒体の軸
線に沿う中央位置で筒体の軸線に直角な仕切板によって
２分割し、旋回室内面には気体の旋回力を助長するため
の突起または溝を旋回室の内周に沿って設け、前記錐体
の旋回方向下流側で、前記旋回案内板よりも下方の錐体
内壁部分に、下端部が前記捕集案内板の下端部よりも上
方に位置するように斜め下向きに突出し、かつ前記筒体
の軸線に平行な衝突板を固着し、前記旋回室と錐体の内
部空間とを連通ずる旋回方向上流側の開口部には、筒体
の軸線方向に移動可能な閉止板を、筒体の軸線方向に間
隔をあけて設けることを特徴とする集塵装置。An upper semicircular arc portion whose radius gradually decreases in a spiral shape at one end in the axial direction of a cylinder that has a circular or polygonal cross section that does not hinder the swirling of gas and forms a swirling chamber that extends in the horizontal direction. and an inlet duct extending vertically is connected through a connecting part having a lower semicircular portion with the same radius as the cylinder, and the other end in the axial direction is provided with an outlet duct whose end protrudes into the cylinder. A hollow cone with a lower cone having an inner wall portion extending tangentially from the inner wall of the cylinder is fixed to the lower part of the cylinder. The side and downstream sides each form an opening that communicates the whirl chamber with the inner space of the cone, and a whirl guide plate curved with approximately the same curvature as the inner surface of the whirl chamber, and an upper end portion. It is fixed to the rotation guide plate on the upstream side of the cone in the rotation direction and extends diagonally downward from the lower end of the cone to an upper position separated by a distance so as to form a space between it and the inner wall portion of the cone on the upstream side of the cone in the rotation direction. The inner space of the cone is divided into two by a partition plate perpendicular to the axis of the cylinder at the center position along the axis of the cylinder, and the swirling force of the gas is applied to the inside of the swirling chamber. A protrusion or groove for promoting the rotation is provided along the inner circumference of the swirling chamber, and on the downstream side in the swirling direction of the cone, a lower end thereof is attached to the collection guide plate on the inner wall portion of the cone below the swirling guide plate. an opening on the upstream side in the rotation direction that protrudes obliquely downward so as to be located above the lower end, has a collision plate fixed thereto that is parallel to the axis of the cylinder, and communicates the rotation chamber with the internal space of the cone; A dust collector characterized in that the part is provided with closing plates movable in the axial direction of the cylindrical body at intervals in the axial direction of the cylindrical body.