JPS5815163B2 - dust collector - Google Patents

Description

【発明の詳細な説明】 本発明は集塵装置の改良に関し、更に詳しくは、粉塵を
含んだ気体流路中に微速回転する軸に複数円板を小間隙
を持たせて平行に取付けた集塵体を設置して除塵するよ
うに構成した集塵装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a dust collector, and more specifically, the present invention relates to an improvement in a dust collector, and more specifically, a dust collector in which a plurality of discs are installed in parallel with a small gap between them on a shaft that rotates at a very low speed in a gas flow path containing dust. The present invention relates to a dust collector configured to remove dust by installing a dust object.

元来各種の工業において気体中に浮遊する粉塵を除去回
収することは大気汚染防止、及び資源の有効利用のため
に極めて重要であって、種々の方法が行われている。BACKGROUND OF THE INVENTION In various industries, removing and recovering dust floating in gas is extremely important for preventing air pollution and effectively utilizing resources, and various methods are being used.

そして従来から高い除塵率を得るためにバッグフィルタ
ーを用いたろ過集塵法が一般に行なわれているが、この
方法は圧力損失がかなり大きく、高温に用いることは困
難であった。Conventionally, a filter dust collection method using a bag filter has been generally used to obtain a high dust removal rate, but this method has a considerably large pressure loss and is difficult to use at high temperatures.

比較的高温に用いられるものとしては気体に高電圧をか
ける電気集塵法があるが、適用対象粉塵が限定され、か
つ除塵率が十分でないという欠点があった。An electrostatic precipitator method that applies a high voltage to a gas is used at relatively high temperatures, but it has the drawbacks that the applicable dust is limited and the dust removal rate is not sufficient.

また、除塵率を上げるために気体中に液体を散布させた
り、蒸気を凝縮させたりする方法もあるが、集塵後に気
体の温度が低下してしまうという欠点があった。Furthermore, in order to increase the dust removal rate, there are methods of spraying a liquid into the gas or condensing the vapor, but these methods have the disadvantage that the temperature of the gas decreases after dust collection.

この他にも色々の除塵法が考えられているが、いずれも
一長一短があって、特に高温の気体を高温のままで除塵
できる適当な方法は存在しなかった。Various other dust removal methods have been considered, but they all have advantages and disadvantages, and there has been no suitable method that can remove dust from particularly high-temperature gases while keeping the temperature high.

本発明は前記従来の欠点を改良し、特に粉塵を含んだ高
温の気体を高温のままで除塵し、除塵した気体のエネル
ギーを回収利用し易くしてエネルギー価格の急上昇傾向
に対処することを主たる目的とし、かつ、圧力損失が小
さく連続的に低コストで除塵できる新規の集塵装置を提
供する事を目的としている。The present invention improves the above-mentioned conventional drawbacks, and in particular, the main purpose of the present invention is to remove dust from high-temperature gas containing dust while it remains at high temperature, and to easily recover and utilize the energy of the removed gas, thereby dealing with the rapid trend of energy prices. The purpose of the present invention is to provide a new dust collector that can continuously remove dust at low cost with small pressure loss.

本発明は気体が壁にはさまれた狭い流路をゆっくり流れ
る場合に、壁面と気体の主要部の間には気体の流速が遅
い層流底層様の領域が存在し、この薄い気体の層には層
流の場合と同様の速度分布が存在し、その中の気体中に
浮遊する粉塵は容易に壁に付着し、この層と気体の主要
部との間には徐々に物質交換が行われ、全体として気体
中の粉塵は着実に壁面に付着することと、この作用は気
体の流入部に対し壁面を僅かに傾斜させることによって
大きくなることに着目してなされたものである。In the present invention, when gas flows slowly through a narrow channel sandwiched between walls, a region similar to a laminar flow bottom layer exists between the wall surface and the main part of the gas, where the gas flow velocity is slow, and this thin gas layer There is a velocity distribution similar to that in laminar flow, dust suspended in the gas easily adheres to the walls, and there is gradual mass exchange between this layer and the main part of the gas. This was done by focusing on the fact that the dust in the gas as a whole steadily adheres to the wall surface, and that this effect is increased by slightly tilting the wall surface with respect to the gas inlet.

以上述べた現象を利用して前記目的を達成する本発明の
集塵装置は、粉塵を含んだ気体流路中に複数の円板を小
間隙を持たせて平行に軸に取付けた集塵体を設け、該集
塵体の前記円板は気体流に対して僅かに傾斜させると共
に微速で回転させて気体中の粉塵を前記円板に付着させ
これをかき取り器で連続的にかき取って集めるように構
成したことを特徴としている。The dust collector of the present invention, which achieves the above object by utilizing the above-mentioned phenomenon, is a dust collector in which a plurality of disks are mounted on a shaft in parallel with a small gap in a gas flow path containing dust. The disc of the dust collector is slightly inclined with respect to the gas flow and rotated at a very low speed so that dust in the gas adheres to the disc and is continuously scraped off with a scraper. It is characterized by being configured to be collected.

以下図面を用いて本発明の装置の実施例を説明する。Embodiments of the apparatus of the present invention will be described below with reference to the drawings.

第１図は本発明の実施例を示す集塵装置１の平断面図で
あり、第２図はそのＡ−Ａ線における縦断面図である。FIG. 1 is a plan sectional view of a dust collector 1 showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view taken along the line A-A.

粉塵を含んだ気体の流路２の途中に集塵部７を設けてこ
こに回転軸３を流路２に対して傾斜させて取り付け、こ
の回転軸３に円板４を小間隙４ａを持たせて複数枚平行
に取付けて集塵体９を構成し、この円板４が気体の流れ
方向Ｂに対して僅かに傾斜して前記粉塵の円板４への付
着現象が発生しやすいようにする。A dust collection part 7 is provided in the middle of the flow path 2 of the gas containing dust, and a rotating shaft 3 is attached here so as to be inclined with respect to the flow path 2, and a disk 4 is attached to this rotating shaft 3 with a small gap 4a. A plurality of disks 4 are attached in parallel to form a dust collecting body 9, and the disk 4 is slightly inclined with respect to the gas flow direction B so that the phenomenon of adhesion of dust to the disk 4 is likely to occur. do.

そしてこの集塵体９は流路２外部に設けたモータ等の回
転装置８によってその回転軸３を矢印Ｃ方向に微速で回
転するようにする。This dust collecting body 9 is caused to rotate its rotating shaft 3 at a very slow speed in the direction of arrow C by a rotating device 8 such as a motor provided outside the flow path 2.

５は集塵部７の気体流から外れた位置に設けたかき取り
刃であり、円板４に付着している粉塵を円板４の回転に
よってかき取る働きをし、このかき取り刃５の直下には
粉塵室６を設ける。Reference numeral 5 denotes a scraping blade provided at a position away from the gas flow of the dust collecting section 7, which functions to scrape off dust adhering to the disk 4 by rotating the disk 4, and directly below the scraping blade 5. A dust chamber 6 is provided.

前記のように構成した本発明の集塵装置１に流路２から
粉塵を含んだ気体が流れてくると、この粉塵は前述した
現象により、気体流Ｂに対して僅かな傾斜角を持って微
速で回転する多層の円板４に効果的に付着し、付着した
まま一回転しないうちにかき取り刃５によって円板４か
ら連続的にかき取られ、直下の粉塵室６に落下して集め
られる。When gas containing dust flows from the flow path 2 into the dust collector 1 of the present invention configured as described above, the dust is tilted at a slight angle of inclination with respect to the gas flow B due to the phenomenon described above. It effectively adheres to the multi-layered disc 4 that rotates at a very slow speed, and before it rotates once, it is continuously scraped off from the disc 4 by the scraping blade 5, and falls into the dust chamber 6 directly below and is collected. It will be done.

従ってかき取り刃５を通過した円板４の表面は粉塵がか
き取られて付着していないきれいな面となり、前記物質
交換は連続して効果的に進行する。Therefore, the surface of the disk 4 that has passed through the scraping blade 5 is cleaned of dust and becomes a clean surface free from adhesion, and the material exchange proceeds continuously and effectively.

第３図は本発明の集塵装置の別の実施例を示すもので、
気体の流路２′が回転軸３のまわりに向きを変えるよう
になっており、この集塵装置１′を通過する粉塵を含ん
だ気体は第１，２図に示した実施例の集塵装置１に比べ
て円板４に接触している時間が長いので集塵率は前例よ
りも若干向上している。FIG. 3 shows another embodiment of the dust collector of the present invention.
The gas flow path 2' is designed to change direction around the rotating shaft 3, and the gas containing dust passing through this dust collector 1' is collected by the dust collector of the embodiment shown in FIGS. 1 and 2. Since the time of contact with the disk 4 is longer than that of the device 1, the dust collection rate is slightly improved compared to the previous example.

その他の構成および働きは前例と同じである。Other configurations and functions are the same as the previous example.

以上本発明の集塵装置を２つの実施例について説明した
が、この他にも回転軸を垂直の方向に設置して実施する
ことも考えられる等、色々の形の装置が考えられる。Although two embodiments of the dust collector of the present invention have been described above, various other types of devices are conceivable, such as one in which the rotating shaft is installed in a vertical direction.

このように本発明の装置は、粉塵を乾いたままで集める
ことができるので、集塵後の気体の温度降下が全くなく
、極めて高温の気体からも安定して集塵でき、気体の圧
力損失もほとんどないという効果がある。In this way, the device of the present invention can collect dust while it is dry, so there is no temperature drop in the gas after dust collection, and it can stably collect dust even from extremely high temperature gases, and there is no pressure loss in the gas. The effect is that there are almost no

また、円板は微速で回転させており、集塵に要するエネ
ルギーは極めて少ない。In addition, the disk is rotated at a very low speed, so the energy required for dust collection is extremely low.

また、粉塵を含む気体の種類によって回転円板の大きさ
、回転速度、円板枚数、円板間の間隔、気体の流速等を
自由に決めることができ、粉塵の集塵効率を上げること
ができると共に集塵装置の多段化も計ることができると
いう効果がある。In addition, the size of the rotating disk, rotation speed, number of disks, spacing between disks, gas flow rate, etc. can be freely determined depending on the type of gas containing dust, increasing dust collection efficiency. This has the effect of making it possible to increase the number of stages of the dust collector.

更に、本発明の集塵装置は気体の流路の途中に多層円板
を取り付けた回転軸を設けるだけであるので容易に安価
に製作できるという効果がある。Furthermore, the dust collector of the present invention has the advantage that it can be manufactured easily and inexpensively because it only requires a rotating shaft with a multilayer disk attached to it in the middle of the gas flow path.

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

第１図は本発明の実施例を示す集塵装置の平断面図、第
２図は第１図の装置のＡ−Ａ線における縦断面図、第３
図は本発明の装置の別の実施例を示す縦断面図である。 ２・・・・・・流路、３・・・・・・回転軸、４・・・
・・・円板、５・・・・・・かき取り刃、６・・・・・
・粉塵室、８・・・・・・回転装置。FIG. 1 is a plan sectional view of a dust collector showing an embodiment of the present invention, FIG. 2 is a vertical sectional view of the device shown in FIG.
The figure is a longitudinal sectional view showing another embodiment of the device of the present invention. 2...Flow path, 3...Rotation shaft, 4...
... Disc, 5... Scraping blade, 6...
・Dust chamber, 8...Rotating device.

Claims (1)

【特許請求の範囲】[Claims] １ 複数の円板を小間隙を持たせて平行に軸に取付けた
集塵体を、粉塵を含んだ気体流路中に前記円板が気体流
に対して僅かに傾斜するように設け、更に前記集塵体は
気体流路外部に設けた回転装置によって微速で回転させ
ると共に、気体流から外れた部分の集塵体の小間隙部に
はかき取り器を設け、その直下には粉塵室を配置したこ
とを特徴とする集塵装置。1. A dust collecting body in which a plurality of discs are mounted on a shaft in parallel with small gaps is installed in a gas flow path containing dust so that the discs are slightly inclined with respect to the gas flow, and The dust collecting body is rotated at a very low speed by a rotating device installed outside the gas flow path, and a scraper is provided in the small gap of the dust collecting body outside the gas flow, and a dust chamber is provided directly below the scraper. A dust collector characterized by the following: