JPH10384A - Cyclone type dust collector - Google Patents
Cyclone type dust collectorInfo
- Publication number
- JPH10384A JPH10384A JP23730996A JP23730996A JPH10384A JP H10384 A JPH10384 A JP H10384A JP 23730996 A JP23730996 A JP 23730996A JP 23730996 A JP23730996 A JP 23730996A JP H10384 A JPH10384 A JP H10384A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- powder
- type dust
- outer cylinder
- diameter
- 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
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/081—Shapes or dimensions
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Cyclones (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、含塵ガスを旋回流
にして遠心力により清浄ガスからダストを分離するサイ
クロン式集塵装置の改良に関するものである。例えば含
塵ガスを清浄ガスにするあらゆる集塵装置に応用でき、
且つ高効率及び低動力損失（低圧損）の要求がある集塵
装置に応用することが好適である。具体例としては、ガ
スタービン入口の高温・高効率集塵装置に応用すること
が最適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cyclone type dust collecting apparatus for separating dust from clean gas by centrifugal force by turning a dust-containing gas into a swirling flow. For example, it can be applied to all dust collectors that convert dust-containing gas to clean gas.
In addition, it is preferable to apply the present invention to a dust collector which requires high efficiency and low power loss (low pressure loss). As a specific example, it is optimal to apply to a high-temperature and high-efficiency dust collector at the inlet of a gas turbine.
【０００２】[0002]
【従来の技術】従来からサイクロン式集塵装置は公知で
ある。その基本的な構成を図８に従って説明すると、筒
状部１０に下方に向かって縮径する円錐状部２０を連設
してなる外筒３０と、除塵後の清浄ガスを排出する内筒
４０とからなるサイクロン本体で構成されたものであ
る。その原理を説明すると、筒状部１０に接続された導
入口５０から導入された含塵ガスは自由渦流を形成して
下降旋回流Ｔとなり、その遠心力によりガス中の粉体を
外筒３０の内壁側に分離して自然落下させながら排出円
筒６０から回収する一方、除塵後の清浄ガスは円錐状部
２０の適当な位置から自然に反転して上昇流Ｊとなるの
で、内筒４０を通って下流側の装置（図示せず）に供給
される。従って、下流側に設置された装置を考慮すると
清浄ガス中の粉体は少ないほどよく、且つ粒子径の大き
い粉体が混入されていないほど好ましい。2. Description of the Related Art A cyclone type dust collecting apparatus has been known. The basic configuration will be described with reference to FIG. 8. An outer cylinder 30 formed by connecting a conical portion 20 having a diameter reduced downward to the cylindrical portion 10 and an inner cylinder 40 for discharging clean gas after dust removal. And a cyclone body consisting of Explaining the principle, the dust-containing gas introduced from the introduction port 50 connected to the cylindrical portion 10 forms a free vortex and becomes a downward swirling flow T, and the centrifugal force causes the powder in the gas to move into the outer cylinder 30. While being separated from the inner wall side of the conical portion 20 and collected from the discharge cylinder 60 while being naturally dropped, the clean gas after dust removal is naturally inverted from an appropriate position of the conical portion 20 to become an upward flow J. And is supplied to a downstream device (not shown). Therefore, considering the apparatus installed on the downstream side, it is preferable that the amount of powder in the clean gas is as small as possible and that the powder having a large particle diameter is not mixed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の一般的
なサイクロン式集塵装置は集塵効率が悪く、粒子径が１
０μ以下の粉体を集塵することは非常に困難であった。
また、サイクロン本体のうちの外筒３０を改良して円錐
状部２０・２０を２連にしたダブルコーン型サイクロン
（図９参照）も存在するが、その捕集の効果はあがるも
のの捕集限界粒子径は７〜８μ程度であった。However, the conventional general cyclone type dust collector has a low dust collection efficiency and a particle diameter of 1%.
It was very difficult to collect powder having a particle size of 0 μm or less.
There is also a double-cone type cyclone in which the outer cylinder 30 of the cyclone body is improved and the conical portions 20 and 20 are connected in series (see FIG. 9), but the collection effect is improved but the collection limit is increased. The particle size was about 7-8 μ.
【０００４】そこで、この種サイクロンの集塵効率を高
める方法の一つとして、遠心力が作用する筒状部１０を
上下に長くするという手段がある。しかし、従来、内筒
４０の長さはその下端部が上記筒状部１０よりも上に位
置するように設定されているのが一般的である。これ
は、内筒４０を円錐状部２０まで延長した場合、円筒４
０の下端部（清浄ガスの入口）とサイクロン本体３０の
内壁とが接近するため、下降旋回流Ｔと上昇流Ｊの干渉
によって含塵ガスが上昇流Ｊに巻き込まれたり、遠心力
により分離された粉体も上昇流Ｊに巻き込まれて清浄ガ
スに再混入するなどして集塵効率が低下するからであ
る。Therefore, as one of the methods for increasing the dust collection efficiency of this type of cyclone, there is a means of elongating the cylindrical portion 10 on which the centrifugal force acts, vertically. However, conventionally, the length of the inner cylinder 40 is generally set such that its lower end is located above the cylindrical portion 10. This is because when the inner cylinder 40 is extended to the conical portion 20, the cylinder 4
0 (inlet of the clean gas) and the inner wall of the cyclone body 30 approach each other, so that the dust-containing gas is caught in the upward flow J by the interference of the downward swirling flow T and the upward flow J or separated by centrifugal force. This is because the dust collection efficiency is also reduced because the powder is also entrained in the ascending flow J and re-mixed into the clean gas.
【０００５】また、別の方法として、導入口５０におけ
る含塵ガスの導入流速を上げたり、内筒４０の筒径を小
さくするという手段があるが、前者ではそれだけ遠心力
が増すため粉体による外筒３０内壁の磨耗が著しく、後
者では圧力損失が非常に大きい。このように、サイクロ
ンはその効果は明らかなものの、高効率化という点で集
塵システムの構成上大きな問題となっていた。As another method, there is a method of increasing the introduction flow rate of the dust-containing gas at the introduction port 50 or reducing the diameter of the inner cylinder 40. In the former method, however, the centrifugal force is increased, so that powder is used. The inner wall of the outer cylinder 30 is significantly worn, and the latter has a very large pressure loss. As described above, although the effect of the cyclone is obvious, the cyclone has been a major problem in the configuration of the dust collection system in terms of high efficiency.
【０００６】本発明は上述した課題を解決するためにな
されたものであり、その目的は捕集限界粒子径が小さ
く、かつ集塵効率が高いサイクロン式集塵装置を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cyclone type dust collector having a small collection limit particle diameter and a high dust collection efficiency.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に本発明では、含塵ガスから清浄ガスを分離する外筒と
内筒からなるサイクロン式集塵装置において、下降旋回
流の旋回速度を外筒の断面積を拡径することによって急
激に遅くすると同時に、上記内筒の下端を上記下降旋回
流が遅くなる場所まで延長するという手段を用いた。In order to achieve the above object, the present invention provides a cyclone type dust collecting apparatus comprising an outer cylinder and an inner cylinder which separates a clean gas from a dust-containing gas. A means was used in which the cross-sectional area of the outer cylinder was increased in diameter to rapidly reduce the velocity, and at the same time, the lower end of the inner cylinder was extended to a location where the downward swirling flow was slowed.
【０００８】具体的な手段としては、含塵ガスを下降旋
回流として粉体と清浄ガスとに分離する筒状部と、下方
に向かって縮径する円錐状部を有する外筒と、この外筒
の途中で発生する上昇流によって清浄ガスを排出する内
筒とからなるサイクロン式集塵装置において、上記筒状
部と円錐状部との間において上記筒状部の断面積を大き
くした拡径部を設けると同時に、この拡径部まで上記内
筒の下端を延長することによって、目的を達成してい
る。As a specific means, a cylindrical portion for separating the dust-containing gas into powder and clean gas as a downward swirling flow, an outer cylinder having a conical portion whose diameter is reduced downward, In a cyclone type dust collector including an inner cylinder that discharges clean gas by an upward flow generated in the middle of the cylinder, a cross-sectional area of the cylindrical portion is enlarged between the cylindrical portion and the conical portion. The object is achieved by providing the part and extending the lower end of the inner cylinder to the enlarged diameter part.
【０００９】さらに、別の手段として、円錐状部でいっ
たん外筒径を絞った後に、拡径して拡径部を設け、さら
に別の円錐状部で外筒径を絞ると同時に、この拡径部ま
で内筒の下端を延長する技術も用いた。ここで、拡径部
は筒状部よりも大きい断面積、あるいは筒状部の断面積
以下の断面積の何れも含んでいる。また、この構成にお
いて円錐状部を複数段連設するという手段を選択的に用
いた。Further, as another means, after the outer cylinder diameter is once narrowed by the conical portion, the diameter is increased to provide an enlarged diameter portion. A technique to extend the lower end of the inner cylinder to the diameter portion was also used. Here, the enlarged diameter portion includes a cross-sectional area larger than the cylindrical portion or a cross-sectional area smaller than the cross-sectional area of the cylindrical portion. In this configuration, a means of continuously providing a plurality of conical portions in a plurality of stages is selectively used.
【００１０】なお、内筒の下端は拡径部の開始点から終
了点、すなわち筒状部の下端から円錐状部の上端に至る
何れかで設定すればよく、本発明ではこの範囲で内筒下
端の最適位置を設定するという技術概念を有する。また
本発明では、拡径部を下方に向かって拡径する円錐部に
その下端と同径の円筒を連設して構成するという手段を
用いた。ここでいう円錐部は拡径部の一要素であって、
外筒の基本構成である円錐状部とは全く別のものを意味
している。Note that the lower end of the inner cylinder may be set at any point from the start point to the end point of the enlarged diameter portion, that is, from the lower end of the cylindrical portion to the upper end of the conical portion. It has the technical concept of setting the optimum position of the lower end. Further, in the present invention, a means is used in which a cylinder having the same diameter as the lower end thereof is continuously connected to a conical portion whose diameter is increased downward. The conical part here is one element of the enlarged diameter part,
It is completely different from the conical part which is the basic configuration of the outer cylinder.
【００１１】サイクロンでは、自由渦流が下降旋回流を
形成して遠心力を強めながら移動することによって粉体
を外筒内壁へと移動させるが、円錐状部の形成によって
流路が絞られるので、途中で内筒内に向かって上昇流が
発生する。本発明では、下降旋回流の流速を急激に遅く
して粉体の相対的な沈降速度を速めると同時に、拡径部
に内筒先端を延長したことによって、粉体から上昇流の
距離を大きくとることができ、その結果として、内筒に
流入する清浄ガスへの粉体混入率を激減させることがで
きる。この場合、拡径部の長さを適度に設定することに
より、粉体の分離工程を長くとることが可能である。In the cyclone, the free vortex forms a downward swirling flow and moves while increasing the centrifugal force to move the powder to the inner wall of the outer cylinder. However, the flow path is narrowed by the formation of the conical portion. On the way, an upward flow is generated toward the inner cylinder. In the present invention, the distance of the ascending flow from the powder is increased by rapidly decreasing the flow velocity of the descending swirling flow to increase the relative sedimentation speed of the powder and extending the tip of the inner cylinder to the enlarged diameter portion. As a result, the powder mixing ratio to the clean gas flowing into the inner cylinder can be drastically reduced. In this case, by appropriately setting the length of the enlarged diameter portion, it is possible to lengthen the powder separation step.
【００１２】また、円錐状部を複数連設することによっ
て、その効果をより高めることができる。The effect can be further enhanced by providing a plurality of conical portions in a row.
【００１３】[0013]
【発明の実施の形態】以下、本発明の好ましい実施の形
態を添付した図面に従って説明する。先ず、図１は本発
明の第一の実施の形態を示したものであり、その構成
は、含塵ガスを下降旋回流Ｔとして粉体と清浄ガスとに
分離する外筒１と、この外筒１の中途において発生する
上昇流Ｊによって清浄ガスを後段に接続された装置に供
給する内筒２とからなる。外筒１は基本的な構成とし
て、筒状部１ａと下方に向かって縮径する円錐状部１ｂ
とを有しているが、この点については従来のサイクロン
式集塵装置と同じである。３は筒状部１ａに対して含塵
ガスを供給するための導入口、４は分離した粉体を回収
するために排出円筒であり、円錐状部１ｂの下端に接続
されている。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. First, FIG. 1 shows a first embodiment of the present invention, which has an outer cylinder 1 for separating dust-containing gas into powder and clean gas as a downward swirling flow T, An inner cylinder 2 for supplying a clean gas to a device connected at a later stage by an ascending flow J generated in the middle of the cylinder 1. The outer cylinder 1 has, as a basic configuration, a cylindrical part 1a and a conical part 1b whose diameter is reduced downward.
However, this is the same as the conventional cyclone type dust collector. Reference numeral 3 denotes an inlet for supplying dust-containing gas to the cylindrical portion 1a, and reference numeral 4 denotes a discharge cylinder for collecting separated powder, and is connected to a lower end of the conical portion 1b.
【００１４】次に、１ｃは拡径部であって、本発明の特
徴的構成の１つである。すなわち、拡径部１ｃは外筒１
における上昇流Ｊの発生開始部分、すなわち、筒状部１
ａと円錐状部１ｂとの間に設けられたもので、筒状部１
ａの円形の断面積を相似形で大きくしたものであり、具
体的には下方に向かって拡径する円錐部１ｄに、その下
端と同径で一定の高さを有する円筒１ｅを連設して構成
している。そして、円筒１ｅの下端に円錐上部１ｂを接
続しているのである。そこで、外筒１の各部流路断面積
をより明らかにするために、この実施形態の集塵装置と
図７に示した従来装置とのＡ〜Ｄにおける断面積を比較
したグラフを図２に示した。一方、本発明のもう１つの
特徴的構成としては、内筒２の下端２ａを拡径部１ｃま
で延長したことである。なお、この実施形態では内筒２
の下端２ａを拡径部１ｃにおける円筒１ｅの上端に位置
させているが、これは一例であって、本発明においては
拡径部１ｃの開始点から終了点、すなわち同図で示した
円錐部１ｄの上端から円筒１ｅの下端に至る何れか最適
な位置に内筒２の下端２ａを延長することができるので
ある。Next, reference numeral 1c denotes an enlarged diameter portion, which is one of the characteristic structures of the present invention. That is, the enlarged diameter portion 1c is
Where the upward flow J occurs, ie, the cylindrical portion 1
a and the conical portion 1b, the cylindrical portion 1
The circular cross-sectional area of a is enlarged in a similar manner. Specifically, a cylinder 1e having the same diameter as the lower end and having a certain height is continuously connected to a conical portion 1d whose diameter increases downward. It is composed. And the conical upper part 1b is connected to the lower end of the cylinder 1e. FIG. 2 is a graph comparing the cross-sectional areas of the dust collector of this embodiment and the conventional apparatus shown in FIG. 7 in A to D in order to clarify the cross-sectional area of each passage of the outer cylinder 1. Indicated. On the other hand, another characteristic configuration of the present invention is that the lower end 2a of the inner cylinder 2 is extended to the enlarged diameter portion 1c. In this embodiment, the inner cylinder 2
Is located at the upper end of the cylinder 1e in the enlarged diameter portion 1c, but this is merely an example, and in the present invention, the starting point to the ending point of the enlarged diameter portion 1c, that is, the conical portion shown in FIG. The lower end 2a of the inner cylinder 2 can be extended to any optimum position from the upper end of 1d to the lower end of the cylinder 1e.
【００１５】この実施形態の集塵装置によれば、筒状部
１ａでは従来と同様に自由渦流による下降旋回流が形成
されて含塵ガスに遠心力が働くので、粉体は遠心力によ
って徐々に外筒１の内壁側に移動するが、下降旋回流が
拡径部１ｃに導入されれば旋回流は拡径部１ｃの内壁を
伝うように旋回半径が大きくなり、旋回速度が急激に遅
くなる。この結果、粉体に加わっていた遠心力が小さく
なり、相対的に自由落下のベクトルが大きくなるので、
従来では回収することができなかった程度の小さい粒子
径の粉体までも排出円筒４に向かって沈降することにな
る。また、内筒２と外筒１との距離が拡径部１ｃにおい
て開くため、上昇流を形成する清浄ガスとの干渉を完全
になくすことができ、含塵ガス側から清浄ガス側への粉
体の巻き込みによる再混入も大幅に減らすことができ
る。According to the dust collecting apparatus of this embodiment, a downward swirling flow is formed by the free vortex in the cylindrical portion 1a as in the prior art, and the centrifugal force acts on the dust-containing gas. When the downward swirling flow is introduced into the enlarged diameter portion 1c, the swirling flow has a large turning radius so as to travel along the inner wall of the enlarged diameter portion 1c, and the swirling speed is rapidly reduced. Become. As a result, the centrifugal force applied to the powder becomes smaller, and the vector of the free fall becomes relatively larger.
Even a powder having a small particle size that cannot be recovered conventionally will settle toward the discharge cylinder 4. Further, since the distance between the inner cylinder 2 and the outer cylinder 1 is opened at the enlarged diameter portion 1c, interference with the clean gas that forms the upward flow can be completely eliminated, and the powder from the dust-containing gas side to the clean gas side can be removed. Re-entry due to body involvement can also be significantly reduced.
【００１６】また、内筒２の下端２ａを拡径部１ｃまで
延長しているので、粉体を分離する作業部分、すなわ
ち、この実施形態における円筒１ｅを長く設定すること
が可能となった。つまり、拡径部１ｃを構成する円筒１
ｅの長さだけ粉体分離工程が長くなり、その分だけ除塵
機能が高くなることはもちろんである。Further, since the lower end 2a of the inner cylinder 2 is extended to the enlarged diameter portion 1c, it is possible to lengthen the work portion for separating the powder, that is, the cylinder 1e in this embodiment. That is, the cylinder 1 forming the enlarged diameter portion 1c
Needless to say, the powder separation step becomes longer by the length of e, and the dust removing function becomes higher by that much.
【００１７】図３はこの実施形態に係る集塵装置の捕集
効率（集塵効率）を示したもので、粉体として図４に示
す粒度分布の炭酸カルシウムを用いた。また、拡径部１
ｃにおける空塔速度Ｕを２、３、４ｓ／ｍの３段階に変
えて測定したものである。なお、空塔速度Ｕは含塵ガス
の導入速度Ｅを変えて段階的に変化させた。この結果、
どの空塔速度Ｕであっても、従来捕集できなかった７μ
以下の粉体を捕集することができた。また、空塔速度Ｕ
が小さいほど捕集効率が高いという結果が得られた。こ
れは、上述したように拡径部１ｃにおける下降旋回流の
旋回速度が低下し、これによって粉体の遠心力が小さく
なって沈降しやすくなると同時に、含塵ガスの下降旋回
流と清浄ガスの上昇流の干渉がなくなり、含塵ガス側か
ら清浄ガス側への粉体の再混入を防止し得たことに他な
らない。FIG. 3 shows the collection efficiency (dust collection efficiency) of the dust collecting apparatus according to this embodiment. As the powder, calcium carbonate having a particle size distribution shown in FIG. 4 was used. In addition, the enlarged diameter portion 1
The superficial velocity U at c was measured in three stages of 2, 3, and 4 s / m. The superficial velocity U was changed stepwise by changing the introduction speed E of the dust-containing gas. As a result,
No matter which superficial tower speed U
The following powder was able to be collected. The superficial tower speed U
It was found that the smaller the value, the higher the collection efficiency. This is because, as described above, the swirling speed of the descending swirling flow in the enlarged diameter portion 1c decreases, whereby the centrifugal force of the powder is reduced and sedimentation is facilitated. The interference of the ascending flow has been eliminated, and the remixing of the powder from the dust-containing gas side to the clean gas side has been prevented.
【００１８】続いて、本発明に係る他の実施の形態を図
５、図６に従って説明する。図５に示した第二の実施形
態は、円錐状部１ｂ・１ｆを２段連設してなるダブルコ
ーン型サイクロンに本発明を適用した例を示したもので
あり、円錐状部１ｂ・１ｆとの間に高さＨをもって筒状
部１ａよりも大径の拡径部１ｃを設けている。また、内
筒２の下端２ａを拡径部１ｃの高さＨの範囲で設定する
ことは上記第一実施形態と同じである。この実施形態に
よれば、その基本構成として高集塵効率のダブルコーン
型サイクロンを採用したことに加え、拡径部１ｃより下
降旋回流を減速して相対的に沈降速度を大きくすると同
時に、かつ上昇流との干渉をなくして、より高い集塵効
率を得るものである。Next, another embodiment of the present invention will be described with reference to FIGS. The second embodiment shown in FIG. 5 shows an example in which the present invention is applied to a double-cone type cyclone in which conical portions 1b and 1f are connected in two stages, and conical portions 1b and 1f. And a larger diameter portion 1c having a height H and a larger diameter than the cylindrical portion 1a. Setting the lower end 2a of the inner cylinder 2 within the range of the height H of the enlarged diameter portion 1c is the same as in the first embodiment. According to this embodiment, in addition to adopting a double-cone-type cyclone with high dust collection efficiency as its basic configuration, the descending swirling flow is reduced from the enlarged diameter portion 1c to relatively increase the sedimentation speed, and A higher dust collection efficiency is obtained by eliminating interference with the upward flow.
【００１９】一方、図６に示した第三の実施形態は、上
記第二実施形態のダブルコーン型サイクロンに上述した
第一実施形態の拡径部１ｃを構成したことを特徴とした
もので、両者の利点を複合させることにより相乗的な効
果が得られるものである。つまり、円錐状部１ｂ・１ｆ
の間に下方に拡径する円錐部１ｄと円筒１ｅとからなる
拡径部１ｃを設け、かつ、内筒２の下端２ａを拡径部１
ｃの開始点から終了点に至る範囲で最適な位置に設定す
る。従って、この第三の実施形態によれば、ダブルコー
ン型サイクロンによってもたらされる高集塵効率に加
え、拡径部１ｃの円筒１ｅによって遠心力による粉体の
分離工程が長くとられているため、粒子径が小さい粉体
をも含塵ガスから確実に分離でき、さらに高い集塵効率
が得られるのである。On the other hand, a third embodiment shown in FIG. 6 is characterized in that the double cone type cyclone of the second embodiment is provided with the enlarged diameter portion 1c of the first embodiment. By combining the advantages of both, a synergistic effect can be obtained. That is, the conical portions 1b and 1f
Between the conical portion 1d and the cylinder 1e that expands downward, and the lower end 2a of the inner cylinder 2 is
An optimal position is set in the range from the start point to the end point of c. Therefore, according to the third embodiment, in addition to the high dust collection efficiency provided by the double cone-type cyclone, the powder separating step by centrifugal force is lengthened by the cylinder 1e of the enlarged diameter portion 1c. Powder having a small particle diameter can be reliably separated from the dust-containing gas, and higher dust collection efficiency can be obtained.
【００２０】なお、上述した第二、第三の実施形態で
は、外筒の基本構成として円錐状部１ｂ・１ｆを二段に
連設したダブルコーン型サイクロンを説明したが、これ
は本発明の一例であって、筒状部１ａよりも大径の拡径
部１ｃを設けること、及び内筒２の下端２ａを上記拡径
部１ｃまで延長することを条件に、さらに三段以上、円
錐状部を連設することも可能である。In the above-described second and third embodiments, the double cone type cyclone in which the conical portions 1b and 1f are connected in two stages has been described as the basic configuration of the outer cylinder. This is an example, and provided that the enlarged diameter portion 1c having a diameter larger than that of the cylindrical portion 1a and that the lower end 2a of the inner cylinder 2 is extended to the enlarged diameter portion 1c, three or more steps are conical. It is also possible to connect parts in series.
【００２１】さらに、図７に第四の実施形態を示す。こ
の実施形態では、外筒の基本構成として円錐状部１ｂ・
１ｆを二段に連設しているが、筒状部１ａをいったん円
錐状部１ｆで絞り、円錐部１ｄで筒状部１ａの径まで拡
径したものである。従って、筒状部１ａと円筒１ｅの径
は同一である点で、先の実施形態とは異なっている。な
お、内筒２の下端２ａの延長位置は先の実施形態と同様
に、拡径部１ｃまでである。ここで重要なことは、いっ
たん円錐状部１ｆで絞った外径を拡径して含塵ガスを減
速することと、減速された含塵ガスから清浄ガスを得る
ために内筒２の下端２ａを拡径部１ｃまで延長すること
である。筒状部１ａの径よりも大きい拡径部を有する先
の実施形態までは至らないものの、従来の構造と比較す
れば十分な効果を期待することができる。また、この実
施形態では筒状部１ａと円筒１ｅの径を同一径とした
が、円筒１ｅの径が筒状部１ａよりも小さい場合でも、
粉体の粒子径や用途によっては従来よりも高い効果を発
揮することができる。FIG. 7 shows a fourth embodiment. In this embodiment, the basic configuration of the outer cylinder is a conical portion 1b.
Although 1f is connected in two stages, the cylindrical portion 1a is once narrowed down by the conical portion 1f, and is expanded to the diameter of the cylindrical portion 1a by the conical portion 1d. Therefore, it differs from the previous embodiment in that the diameters of the cylindrical portion 1a and the cylinder 1e are the same. The extension of the lower end 2a of the inner cylinder 2 extends to the enlarged diameter portion 1c as in the previous embodiment. What is important here is that the outer diameter narrowed once by the conical portion 1f is expanded to reduce the dust-containing gas, and the lower end 2a of the inner cylinder 2 is obtained in order to obtain a clean gas from the reduced dust-containing gas. Is extended to the enlarged diameter portion 1c. Although it does not reach the previous embodiment having the enlarged diameter portion larger than the diameter of the cylindrical portion 1a, a sufficient effect can be expected as compared with the conventional structure. Further, in this embodiment, the diameter of the cylindrical portion 1a and the diameter of the cylinder 1e are the same, but even when the diameter of the cylinder 1e is smaller than the diameter of the cylindrical portion 1a,
Depending on the particle size and application of the powder, higher effects than before can be exhibited.
【００２２】[0022]
【発明の効果】以上詳述したように、本発明のサイクロ
ン式集塵装置は簡単な構成でありながら、従来のサイク
ロンのように含塵ガスの導入速度を上げたり、内筒の筒
径を絞ることなく集塵効率を高めることができた。すな
わち、圧力損失の上昇を抑えながら、高い集塵効率が得
られるものである。また、高効率サイクロンで問題とな
っていた粉体によるサイクロン本体の磨耗を大幅に減ら
すことができた。As described in detail above, the cyclone type dust collector of the present invention has a simple structure, but can increase the introduction speed of the dust-containing gas and reduce the diameter of the inner cylinder as in the conventional cyclone. Dust collection efficiency could be increased without squeezing. That is, high dust collection efficiency can be obtained while suppressing an increase in pressure loss. In addition, abrasion of the cyclone body due to powder, which had been a problem with high-efficiency cyclones, was significantly reduced.
【００２３】また、従来のサイクロンから外筒と内筒な
ど、主要部の配置を何ら変更することなく本発明を構成
することができるので、現存するシステムのうち一部改
良を行うだけで済むこともあるので、その応用範囲は広
い。Further, since the present invention can be configured without changing the arrangement of the main parts such as the outer cylinder and the inner cylinder from the conventional cyclone, only a part of the existing system needs to be improved. As such, its application range is wide.
【図１】本発明のサイクロン式集塵装置の第一の実施形
態を示した概略図FIG. 1 is a schematic view showing a first embodiment of a cyclone type dust collector of the present invention.
【図２】同集塵装置と従来の集塵装置の流路（外筒）断
面積を示した比較図FIG. 2 is a comparison diagram showing a cross-sectional area of a flow path (outer cylinder) between the dust collector and a conventional dust collector.
【図３】同集塵装置の捕集効率を示したグラフFIG. 3 is a graph showing the collection efficiency of the dust collector.
【図４】同集塵効率試験に使用した粉体の粒度分布図FIG. 4 is a particle size distribution chart of the powder used in the dust collection efficiency test.
【図５】本発明のサイクロン式集塵装置の第二の実施形
態を示した概略図FIG. 5 is a schematic view showing a second embodiment of the cyclone type dust collector of the present invention.
【図６】本発明のサイクロン式集塵装置の第三の実施形
態を示した概略図FIG. 6 is a schematic view showing a third embodiment of the cyclone type dust collector of the present invention.
【図７】従来のサイクロン式集塵装置を示した概略図FIG. 7 is a schematic view showing a conventional cyclone type dust collector.
【図８】従来のダブルコーン型サイクロンを示した概略
図FIG. 8 is a schematic view showing a conventional double cone type cyclone.
１ 外筒 １ａ 筒状部 １ｂ・１ｆ 円錐状部 １ｃ 拡径部 １ｄ 円錐部 １ｅ 円筒 ２ 内筒 ２ａ 内筒の下端 ３ 導入口 ４ 排出円筒 Ａ〜Ｄ 流路断面積の計測位置 Ｅ 含塵ガスの導入流 Ｊ 上昇流 Ｔ 下降旋回流 Ｕ 集塵効率試験における空塔速度の測定位置 DESCRIPTION OF SYMBOLS 1 Outer cylinder 1a Cylindrical part 1b ・ 1f Conical part 1c Enlarged diameter part 1d Conical part 1e Cylinder 2 Inner cylinder 2a Lower end of inner cylinder 3 Inlet port 4 Discharge cylinder A to D Measurement position of channel cross-sectional area E Dust-containing gas Inlet flow J Upflow T Downturning flow U Measurement position of superficial velocity in dust collection efficiency test
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成８年１１月５日[Submission date] November 5, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明のサイクロン式集塵装置の第一の実施形
態を示した概略図FIG. 1 is a schematic view showing a first embodiment of a cyclone type dust collector of the present invention.
【図２】同集塵装置と従来の集塵装置の流路（外筒）断
面積を示した比較図FIG. 2 is a comparison diagram showing a cross-sectional area of a flow path (outer cylinder) between the dust collector and a conventional dust collector.
【図３】同集塵装置の捕集効率を示したグラフFIG. 3 is a graph showing the collection efficiency of the dust collector.
【図４】同集塵効率試験に使用した粉体の粒度分布図FIG. 4 is a particle size distribution chart of the powder used in the dust collection efficiency test.
【図５】本発明のサイクロン式集塵装置の第二の実施形
態を示した概略図FIG. 5 is a schematic view showing a second embodiment of the cyclone type dust collector of the present invention.
【図６】本発明のサイクロン式集塵装置の第三の実施形
態を示した概略図 FIG. 6 is a schematic view showing a third embodiment of the cyclone type dust collector of the present invention.
【図７】 本発明のサイクロン式集塵装置の第四の実施形
態を示した概略図 FIG. 7 is a schematic view showing a fourth embodiment of the cyclone type dust collector of the present invention.
【図８】 従来のサイクロン式集塵装置を示した概略図 FIG. 8 is a schematic diagram showing a conventional cyclone type dust collector.
【図９】 従来のダブルコーン型サイクロンを示した概略
図 FIG. 9 is a schematic view showing a conventional double cone type cyclone.
【符号の説明】 １ 外筒 １ａ 筒状部 １ｂ・１ｆ 円錐状部 １ｃ 拡径部 １ｄ 円錐部 １ｅ 円筒 ２ 内筒 ２ａ 内筒の下端 ３ 導入口 ４ 排出円筒 Ａ〜Ｄ 流路断面積の計測位置 Ｅ 含塵ガスの導入流 Ｊ 上昇流 Ｔ 下降旋回流 Ｕ 集塵効率試験における空塔速度の測定位置[Description of Signs] 1 Outer cylinder 1a Cylindrical part 1b ・ 1f Conical part 1c Enlarged diameter part 1d Conical part 1e Cylinder 2 Inner cylinder 2a Lower end of inner cylinder 3 Inlet 4 Discharge cylinder A to D Measurement of flow cross-sectional area Position E Inflow of dust-containing gas J Upflow T Downturning flow U Measurement position of superficial velocity in dust collection efficiency test
Claims (8)
筒からなるサイクロン式集塵装置において、下降旋回流
の旋回速度を外筒の断面積を拡径することによって急激
に遅くすると同時に、上記内筒の下端を上記下降旋回流
が遅くなる場所まで延長したことを特徴とするサイクロ
ン式集塵装置。In a cyclone type dust collecting apparatus comprising an outer cylinder and an inner cylinder for separating a clean gas from a dust-containing gas, the swirling speed of the downward swirling flow is sharply reduced by increasing the cross-sectional area of the outer cylinder. At the same time, the lower end of the inner cylinder is extended to a place where the downward swirling flow is slowed down.
スとに分離する筒状部と、下方に向かって縮径する円錐
状部を有する外筒と、この外筒の途中で発生する上昇流
によって清浄ガスを排出する内筒とからなるサイクロン
式集塵装置において、上記筒状部と円錐状部との間にお
いて上記筒状部の断面積を大きくした拡径部を設けると
同時に、この拡径部まで上記内筒の下端を延長したこと
を特徴とするサイクロン式集塵装置。2. An outer cylinder having a cylindrical portion for separating dust-containing gas into a powder and a clean gas as a downward swirling flow, an outer cylinder having a conical portion whose diameter decreases downward, and generated in the middle of the outer cylinder. In a cyclone type dust collector comprising an inner cylinder that discharges a clean gas by an ascending flow, a large-diameter portion having a larger cross-sectional area of the cylindrical portion is provided between the cylindrical portion and the conical portion. A cyclone-type dust collector, wherein the lower end of the inner cylinder is extended to the enlarged diameter portion.
スとに分離する筒状部と、下方に向かって縮径する円錐
状部を有する外筒と、この外筒の途中で発生する上昇流
によって清浄ガスを排出する内筒とからなるサイクロン
式集塵装置において、上記円錐状部でいったん外筒径を
絞った後に、拡径して拡径部を設け、さらに別の円錐状
部で外筒径を絞ると同時に、この拡径部まで上記内筒の
下端を延長したことを特徴とするサイクロン式集塵装
置。3. An outer cylinder having a cylindrical portion for separating dust-containing gas into a powder and a clean gas as a downward swirling flow, an outer cylinder having a conical portion decreasing in diameter downward, and generated in the middle of the outer cylinder. In a cyclone type dust collecting apparatus comprising an inner cylinder that discharges clean gas by an ascending flow, after the outer cylinder diameter is once narrowed by the conical portion, the diameter is increased to provide an enlarged diameter portion, and further another conical shape is provided. A cyclone-type dust collecting apparatus characterized in that a diameter of the outer cylinder is reduced at the portion and a lower end of the inner cylinder is extended to the enlarged portion.
請求項３記載のサイクロン式集塵装置。4. The cyclone type dust collecting apparatus according to claim 3, wherein the enlarged diameter portion has a larger sectional area than the cylindrical portion.
る請求項３記載のサイクロン式集塵装置。5. The cyclone type dust collecting apparatus according to claim 3, wherein the enlarged diameter portion has a sectional area smaller than a sectional area of the cylindrical portion.
サイクロン式集塵装置。6. A cyclone type dust collecting apparatus according to claim 3, wherein a plurality of conical portions are continuously provided.
至る何れかまで延長した請求項２又は３記載のサイクロ
ン式集塵装置。7. The cyclone type dust collecting apparatus according to claim 2, wherein the lower end of the inner cylinder is extended from the starting point to the end point of the enlarged diameter portion.
にその下端と同径の円筒を連設してなる請求項２から７
の何れか１つに記載のサイクロン式集塵装置。8. The enlarged diameter portion is formed by connecting a cylinder having the same diameter as the lower end thereof to a conical portion which is increased in diameter downward.
The cyclone type dust collector according to any one of the above.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23730996A JPH10384A (en) | 1996-04-19 | 1996-08-19 | Cyclone type dust collector |
| TW087204802U TW345976U (en) | 1996-04-19 | 1997-04-08 | Cyclone type dust collector |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8-122693 | 1996-04-19 | ||
| JP12269396 | 1996-04-19 | ||
| JP23730996A JPH10384A (en) | 1996-04-19 | 1996-08-19 | Cyclone type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10384A true JPH10384A (en) | 1998-01-06 |
Family
ID=26459777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23730996A Pending JPH10384A (en) | 1996-04-19 | 1996-08-19 | Cyclone type dust collector |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH10384A (en) |
| TW (1) | TW345976U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001121038A (en) * | 1999-10-28 | 2001-05-08 | Ishikawajima Harima Heavy Ind Co Ltd | Solid separation apparatus |
| JP2007160298A (en) * | 2005-11-18 | 2007-06-28 | Ricoh Co Ltd | Cyclone classifier, flash drying system and toner |
| JP2008018729A (en) * | 2007-09-03 | 2008-01-31 | Miike Iron Works Co Ltd | Plant for producing discarded sheet material having enhanced bulk density |
| WO2012157139A1 (en) * | 2011-05-19 | 2012-11-22 | 株式会社コガネイ | Filter |
| KR101225049B1 (en) * | 2012-07-25 | 2013-01-22 | 한국에너지기술연구원 | The fine particle uniflow cyclone separator with a variable gas discharge pipe |
| KR101225046B1 (en) * | 2012-07-25 | 2013-01-22 | 한국에너지기술연구원 | Apparatus for particle separating formed vortex induction part |
| JP2014098237A (en) * | 2012-11-13 | 2014-05-29 | Hazama Ando Corp | Attenuator for charging sediment |
| KR101528756B1 (en) * | 2013-01-17 | 2015-06-16 | 한국에너지기술연구원 | Apparatus for separating particles with two inlet pipe |
| WO2019065085A1 (en) * | 2017-09-27 | 2019-04-04 | 工機ホールディングス株式会社 | Cyclone unit and vacuum cleaner comprising same |
| WO2021237298A1 (en) * | 2020-05-27 | 2021-12-02 | Bioactive Materials Pty Ltd | Devices and methods for the isolation of particles |
-
1996
- 1996-08-19 JP JP23730996A patent/JPH10384A/en active Pending
-
1997
- 1997-04-08 TW TW087204802U patent/TW345976U/en unknown
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001121038A (en) * | 1999-10-28 | 2001-05-08 | Ishikawajima Harima Heavy Ind Co Ltd | Solid separation apparatus |
| JP2007160298A (en) * | 2005-11-18 | 2007-06-28 | Ricoh Co Ltd | Cyclone classifier, flash drying system and toner |
| JP4732276B2 (en) * | 2005-11-18 | 2011-07-27 | 株式会社リコー | Cyclone classifier, airflow drying system and toner |
| JP2008018729A (en) * | 2007-09-03 | 2008-01-31 | Miike Iron Works Co Ltd | Plant for producing discarded sheet material having enhanced bulk density |
| JP4690372B2 (en) * | 2007-09-03 | 2011-06-01 | 株式会社御池鐵工所 | Plant to increase bulk specific gravity of waste sheet material |
| WO2012157139A1 (en) * | 2011-05-19 | 2012-11-22 | 株式会社コガネイ | Filter |
| KR101225049B1 (en) * | 2012-07-25 | 2013-01-22 | 한국에너지기술연구원 | The fine particle uniflow cyclone separator with a variable gas discharge pipe |
| KR101225046B1 (en) * | 2012-07-25 | 2013-01-22 | 한국에너지기술연구원 | Apparatus for particle separating formed vortex induction part |
| JP2014098237A (en) * | 2012-11-13 | 2014-05-29 | Hazama Ando Corp | Attenuator for charging sediment |
| KR101528756B1 (en) * | 2013-01-17 | 2015-06-16 | 한국에너지기술연구원 | Apparatus for separating particles with two inlet pipe |
| WO2019065085A1 (en) * | 2017-09-27 | 2019-04-04 | 工機ホールディングス株式会社 | Cyclone unit and vacuum cleaner comprising same |
| JPWO2019065085A1 (en) * | 2017-09-27 | 2020-04-02 | 工機ホールディングス株式会社 | Cyclone unit and cleaner equipped with the same |
| WO2021237298A1 (en) * | 2020-05-27 | 2021-12-02 | Bioactive Materials Pty Ltd | Devices and methods for the isolation of particles |
Also Published As
| Publication number | Publication date |
|---|---|
| TW345976U (en) | 1998-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6129775A (en) | Terminal insert for a cyclone separator | |
| US6596170B2 (en) | Long free vortex cylindrical telescopic separation chamber cyclone apparatus | |
| US6312594B1 (en) | Insert for a cyclone separator | |
| US6596046B2 (en) | Cyclone separator having a variable longitudinal profile | |
| US6530484B1 (en) | Dense medium cyclone separator | |
| JP6279506B2 (en) | Cyclone equipment | |
| US3710561A (en) | Apparatus for separating solid particles suspended in a gaseous stream | |
| US4927298A (en) | Cyclone separating method and apparatus | |
| US3744220A (en) | Device for imparting a twist to a flow of raw gas in a tornado flow separator | |
| US6168716B1 (en) | Cyclone separator having a variable transverse profile | |
| JPH10384A (en) | Cyclone type dust collector | |
| JPH01242161A (en) | Cyclone | |
| JPH08266938A (en) | Classifying point variable type cyclone apparatus | |
| US5453196A (en) | Induced long vortex cyclone separation method and apparatus | |
| JP2015513446A (en) | Method for reducing the content of fine substances in FGD gypsum | |
| US2719631A (en) | Methods of and devices for effecting centrifugal separation | |
| US4511474A (en) | Cyclone separator having boundary layer turbulence control | |
| US20040069705A1 (en) | Long free vortex, multi-compartment separation chamber cyclone apparatus | |
| FR2468411A1 (en) | PARTICULATE SEPARATOR | |
| CN207872421U (en) | Whirlwind cyclone with centrifugal guide vane and cyclone | |
| JP2010535687A (en) | Apparatus and method for performing chemical and / or physical reaction between solid and gas, and plant for producing cement | |
| US2219711A (en) | Cyclone separator | |
| RU2687923C1 (en) | Method of processing mechanical mixtures using vortex complex of deep separation - vcds | |
| CN107930870A (en) | Whirlwind cyclone and cyclone with centrifugal guide vane | |
| CN211099626U (en) | High-efficient concentrated gypsum swirler |