JP4659912B2 - Wet dust collector - Google Patents

Wet dust collector Download PDF

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JP4659912B2
JP4659912B2 JP2010119157A JP2010119157A JP4659912B2 JP 4659912 B2 JP4659912 B2 JP 4659912B2 JP 2010119157 A JP2010119157 A JP 2010119157A JP 2010119157 A JP2010119157 A JP 2010119157A JP 4659912 B2 JP4659912 B2 JP 4659912B2
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water
container
dust
bubbles
suction pipe
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真治 河井
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有限会社イトートーヨーサービス
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Description

本発明は、含塵空気を吸引して装置内の水に接触させ、それによって集塵する湿式集塵装置の構造に関する。
The present invention relates to a structure of a wet dust collector that sucks dust-containing air and makes it come into contact with water in the device, thereby collecting dust.

従来この種の湿式集塵装置として、例えば特許文献１から４に記載されたものが知られている。特許文献１のものは、水溜めを備え、集塵ヘッドからの吸引空気を案内する案内管の端部に設けられ吸引空気を水中に誘導する開口部に装着された破泡フィルターで吸引された空気流の大きい泡を細かい泡に砕くようになっている。特許文献２のものは、吸込ダクトを本体部の内周壁と接しない位置まで内方へ突設して吸込ダクトの先端部を四方が集塵用水で囲まれる水面下へ水没させ、この吸込ダクトの先端部の周囲で水面に近い水面下に含塵空気の気泡が通過する穴明板を水没配設した構造となっている。特許文献３のものは、吸引された特殊ごみを気泡内に閉じ込める気泡化手段と、気泡を強制的に破壊して特殊ごみを水分に付着させて分離除去する分離手段が装備された構造となっている。特許文献４のものは、沈澱槽内で発生した泡を隣接の循環槽へ流入させこの循環槽内へ落下する水によって消泡させる構造となっている。
Conventionally, as this type of wet dust collector, for example, those described in Patent Documents 1 to 4 are known. The thing of patent document 1 was equipped with the water reservoir, and was attracted | sucked by the bubble-breaking filter with which the opening part which guides the suction air to water was provided at the edge part of the guide tube which guides the suction air from a dust collection head. Bubbles with a large airflow are crushed into fine bubbles. In Patent Document 2, the suction duct is projected inward to a position where it does not contact the inner peripheral wall of the main body, and the tip of the suction duct is submerged below the water surface surrounded by water for collecting dust. In this structure, a perforated plate through which bubbles of dust-containing air pass is placed under the water surface near the water surface around the tip of the submersion. The thing of patent document 3 becomes a structure equipped with the bubble formation means which confine | sucks the sucked special garbage in a bubble, and the separation means which breaks a bubble forcibly and attaches special garbage to a water | moisture content, and is separated and removed. ing. The thing of the patent document 4 has a structure which makes the bubble generated in the precipitation tank flow into an adjacent circulation tank, and is defoamed with the water which falls into this circulation tank.

特開平１０−１２８０３３JP-A-10-128033 特開２０００−３２５７２５JP 2000-325725 A 特開平１０−２７２４３０JP-A-10-272430 特開平５−３３７３７７JP-A-5-337377

ところで、含塵空気を吸引して水中に放出すると含塵空気は気泡になって水中を上昇して水面から大気中に放散される。この気泡と水との接触が行われるときに気泡表面の塵が含水もしくは親水化するので水中に拡散して集塵することができる。この集塵が進行すると水の濁度が高くなって粘性も高まり消泡されにくくなり、水面では大小さまざまの「水泡」が発生する（なお以下、水中のみに存在する空気の粒を気泡、水面等に存在し水被膜を備えた粒を水泡、と呼ぶこととする）。この水泡の発生量は濁度に比例して発生するのでこの種の装置にあっては消泡が課題となっている。   By the way, when the dust-containing air is sucked and released into the water, the dust-containing air becomes bubbles, rises in the water, and is diffused from the water surface to the atmosphere. When the bubbles are brought into contact with water, the dust on the surface of the bubbles becomes water-containing or hydrophilic, so that it can be diffused and collected in the water. As this dust collection progresses, the turbidity of the water increases and the viscosity increases, making it difficult to remove bubbles, and various “water bubbles” are generated on the surface of the water. Etc., and the grains having a water film are called water bubbles). Since the amount of water bubbles generated is proportional to the turbidity, defoaming is a problem in this type of apparatus.

特許文献１のものは、水面で発生した水泡が徐々に多くなると塊状になって水しぶき防止フィルターを通過して紙パックフィルターにまで到達しフィルター機能が低下してしまう問題がある。特許文献２のものは、水面で発生した水泡が徐々に多くなると塊状になって本体内を上昇し、一部の水泡が塊から離脱して排気流に乗って排風装置に吸い込まれ、汚れの付着や漏電事故などを起こす問題がある。特許文献３のものは、発生した水泡を遠心分離機で消泡できるが装置が大型化してしまう問題がある。特許文献４のものは、循環槽の水面に浮遊する水泡を落下する水で消泡するものであるが、水泡は水面で遊動しているので落下する水が当たっても逃げてしまい円滑な消泡ができない問題がある。   The thing of patent document 1 has the problem that when the water bubbles which generate | occur | produced on the water surface gradually increase, it will become a lump and will pass through a splash prevention filter and will reach a paper pack filter, and a filter function will fall. In the case of Patent Document 2, when the water bubbles generated on the water surface gradually increase, it becomes a lump and rises in the main body, and some of the water bubbles are separated from the lump, get on the exhaust flow, and are sucked into the air exhaust device. There is a problem that causes adhesion or leakage of electricity. Although the thing of patent document 3 can defoam the generated water bubble with a centrifuge, there exists a problem that an apparatus will enlarge. In Patent Document 4, the water bubbles floating on the water surface of the circulation tank are defoamed by the falling water. However, since the water bubbles are floating on the water surface, even if the falling water hits, it escapes and smoothly disappears. There is a problem that bubbles cannot be formed.

本発明は上記のような事情に基づいて完成されたものであって、その目的は、低コストで小型軽量でありながら、水泡発生に起因する諸問題が一掃された湿式集塵装置を提供するところにある。
The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a wet dust collector in which various problems caused by generation of water bubbles are eliminated while being small in size and light in weight. By the way.

上記の目的を達成するための手段として、水を貯留する容器と、該容器の上面開口を覆う排気ユニットと、該排気ユニットに固定され該容器内に垂下して水面下に開口させた吸込パイプと、該吸込パイプに介在させ吸引力を発生させる吸引力発生装置と、該吸込パイプの外周に通水路を形成するために配置され下端開口を該吸込パイプの下端開口よりも延出させるとともに水面上に排水口を設けた筒体と、該排水口の上方で該筒体に固定された遮蔽板と、を備え、該筒体に設けた該排水口と該容器内の水面との間に水泡捕捉手段が配設されている構成とした。   As means for achieving the above object, a container for storing water, an exhaust unit that covers the upper surface opening of the container, and a suction pipe that is fixed to the exhaust unit and hangs down into the container and opens below the surface of the water. A suction force generating device that is interposed in the suction pipe and generates a suction force, and is disposed to form a water passage on the outer periphery of the suction pipe and has a lower end opening extending from the lower end opening of the suction pipe and a water surface A cylindrical body provided with a drain port on the top, and a shielding plate fixed to the cylindrical body above the drain port, between the drain port provided in the cylindrical body and the water surface in the container It was set as the structure by which the water bubble capture | acquisition means is arrange | positioned.

即ち本発明装置は、水を貯留する容器、排気ユニット、吸込パイプ、吸引力発生装置、筒体、遮蔽板、及び水泡捕捉手段、を備えるものであって、吸引力発生装置を駆動させると、吸込パイプを経て容器内に貯留された水中に含塵空気が吐出され、水泡が筒体内を上昇し、水面よりも高い位置に設けられた排水口から放出され、この水泡が水面に落ちる前に一旦水泡捕捉手段に捕捉され、ここで水泡を消失させて塵埃混じりの水として落水させることで空気の浄化を図るものである。   That is, the device of the present invention includes a container for storing water, an exhaust unit, a suction pipe, a suction force generation device, a cylinder, a shielding plate, and a water bubble capturing means.When the suction force generation device is driven, Dust-containing air is discharged into the water stored in the container through the suction pipe, and the water bubbles rise through the cylinder and are discharged from the drain outlet provided at a position higher than the water surface. The air bubbles are once captured by the water bubble capturing means, and the air bubbles are lost here and dropped as water mixed with dust to purify the air.

そのため「筒体」は、吸込パイプの外周に配置される。また、吸込パイプ外周面と筒体内周面との間には、通水路が形成される。更に、筒体の下端開口は、吸込パイプの下端開口よりも下方まで延出させる。そして筒体上部の水面よりも高い位置には排水口が放射方向に刻設されている。   Therefore, the “cylinder” is disposed on the outer periphery of the suction pipe. A water passage is formed between the outer peripheral surface of the suction pipe and the peripheral surface of the cylinder. Furthermore, the lower end opening of the cylinder extends below the lower end opening of the suction pipe. And the drain outlet is carved in the radial direction in the position higher than the water surface of a cylinder upper part.

「遮蔽板」は、吸込パイプを経由し排水口から吐出された空気が排気ユニット下面に直接衝突するのを防止するための部材であり、排水口と排気ユニットの間に設けられる。形状については特に限定するものではなく、平板状であっても他の形状であっても良い。但し本発明者が試作実験したところ、遮蔽板が平板状であるものと、上方に凸（下方に開く）の湾曲面状（例えば半円球状）のものとを比較すると、汚れによる排気ユニットの清掃頻度に大きな違いがあるので、こうした湾曲面状（例えば半円球状）のものはより好ましいと言える。   The “shielding plate” is a member for preventing air discharged from the drain outlet via the suction pipe from directly colliding with the lower surface of the exhaust unit, and is provided between the drain outlet and the exhaust unit. The shape is not particularly limited, and may be a flat plate shape or other shapes. However, when the present inventor made a prototype experiment, comparing the one in which the shielding plate is a flat plate and the one having a curved surface (for example, a hemispherical shape) convex upward (opening downward) Since there is a big difference in the cleaning frequency, it can be said that such a curved surface shape (for example, a hemispherical shape) is more preferable.

湾曲させた方が排気ユニットの清掃頻度を少なくできることの理由或いはその理論に関して、本発明者は次のように想像する。
遮蔽板が平板状であると、排水口から通風路内に吐出された空気は、ほぼ層流状態となって水平方向外側に移動し、遮蔽板外縁と容器内壁面との間隙を上方向に移動する。この時排水口から空気と共に吐出された水の一部が、遮蔽板の下面に衝突して落水する。この落滴状態は不均一であり、落滴が含塵空気と効果的に接触するということにならず、塵埃が除去されないまま排気ユニットに達する空気量が多くなってしまう。
これに対し、遮蔽板が上方に凸（下方に開く）の湾曲面状（例えば半円球状）である場合、遮蔽板の内壁面に衝突した水は、湾曲内壁面を伝って遮蔽板外縁全周から落水する。この落滴状態は、水量が多い場合には水膜状、少ない場合でも水滴カーテン状となり、水と接触する含塵空気量は格段に増加することとなる。従って排気ユニットに達した段階では空気中の塵埃除去が進んでおり、結果排気ユニットの清掃頻度が少なくなる。 The present inventor imagines the reason why the curved portion can reduce the cleaning frequency of the exhaust unit or the theory as follows.
If the shield plate is flat, the air discharged from the drain into the ventilation path becomes almost laminar and moves to the outside in the horizontal direction, with the gap between the outer edge of the shield plate and the inner wall surface of the container facing upward. Moving. At this time, part of the water discharged together with air from the drain outlet collides with the lower surface of the shielding plate and falls. This drop state is not uniform, and the drop does not come into effective contact with the dust-containing air, and the amount of air reaching the exhaust unit increases without removing the dust.
On the other hand, when the shielding plate has a curved surface shape that is convex upward (opens downward) (for example, a hemispherical shape), the water that collided with the inner wall surface of the shielding plate travels along the inner wall surface of the shielding plate to the entire outer edge of the shielding plate. Water falls from the lap. This drop state is a water film when the amount of water is large, and a water droplet curtain when the amount of water is small. Accordingly, when the exhaust unit is reached, the dust in the air is being removed, and as a result, the frequency of cleaning the exhaust unit is reduced.

「水泡捕捉手段」は、容器の内部であって、且つ、容器に貯留される水の水面よりも上方位置に配置される構造部分である。筒体の排水口から放出される水泡混じりの水を受け止めると共に、個々の水泡を一旦把持したら容易には移動させないという機能を具備している。この機能を具備するための具体的な構造については特に限定するものではなく、例えば金網、パンチングメタル、といった多孔体構造が典型的なものである。この多孔体の表面が、水泡を積極的に捕捉する粗面形状、水泡を消失させる針状の微細突起、などにより構成されていれば、多孔体構造のみで十分機能する。   The “water bubble capturing means” is a structural part that is disposed inside the container and at a position above the water surface of the water stored in the container. It has a function of receiving water mixed with water bubbles discharged from the drain outlet of the cylindrical body and not easily moving each water bubble once it is gripped. A specific structure for providing this function is not particularly limited, and for example, a porous structure such as a wire mesh or a punching metal is typical. If the surface of the porous body is constituted by a rough surface shape that actively captures water bubbles, needle-like fine protrusions that eliminate water bubbles, and the like, the porous structure alone functions sufficiently.

しかし、筒体から放出された水と水泡のうち、水は通過させ水泡は付着保持する、スポンジ状のフィルターを付帯させるようにすると、より好ましい。このフィルターによって移動が規制された塵埃混じりの水泡は、筒体の排水口から放出される水の直撃を受けて消泡（破裂）し、内部の塵埃が空気と共に周囲に飛散することで消失する。そのときに飛散した塵埃は、一部が落水に直接接触し、他は一旦、フィルターに付着して捕捉されたのち落水によって洗い流され容器の水中に移動する。
However, it is more preferable to attach a sponge-like filter that allows water to pass through and keeps the water bubbles from adhering to the water and water bubbles released from the cylinder. Dust-mixed water bubbles whose movement is restricted by this filter are extinguished (ruptured) by the direct impact of the water discharged from the drainage port of the cylinder, and disappear as the internal dust is scattered around with the air. . Part of the dust scattered at that time is in direct contact with the falling water, the other is once attached to the filter and captured, and then washed away by the falling water and moved into the water of the container.

容器内の水中に吐出された含塵空気は、水泡となって筒体内の通水路を上昇し、水面から離れた位置にある水泡捕捉手段に放出され、ここで水泡が壊れ、水泡内の塵埃は水噴霧された状態となる。こうして水泡捕捉手段で水泡を捕捉保持し、次にこの水泡を消失させることで、塵埃を吸着した水を下方に落とすことになる。
従って本発明に係る湿式集塵装置は、容器内に貯留された水に気泡を吐出させることで気水接触させて集塵を図る従来の方法とは異なり、
（１） 気泡を細分化させる必要がない。
（２） 気泡を細分化しなくて済むため、発生した水泡が壊れにくいという問題が生じにくい。
という特徴を有している。
また、水中に吐出された空気は、筒体内の通水路を伝って上昇するので、大きい塵や重量のある塵は水中に残すこととなるが、水質悪化の原因となる微細な塵に関しては、水泡に閉じ込められたままで、水面から離れた水泡捕捉手段上に放出されることになる。よって、
（３） 容器内に貯留する水の汚濁速度が小さくなるため、汚濁水廃棄の頻度が小さくなる。
更に本発明装置の場合には、駆動源と容器以外の全部材、即ち、排気ユニット、吸込パイプ、筒体、遮蔽板、水泡捕捉手段を、縦積みされた一体構造としやすいので、貯留水やフィルターの交換、塵埃の除去といったメンテナンスのための分離作業を容易にしやすいこと、小型化・軽量化が図りやすい、といった副次的な効果も期待できる極めて高度な発明である。
The dust-containing air discharged into the water in the container rises as a water bubble and rises through the water passage in the cylinder, and is released to the water bubble capturing means located at a position away from the water surface, where the water bubble breaks and the dust in the water bubble Will be sprayed with water. In this way, the water bubbles are captured and held by the water bubble capturing means, and then the water bubbles disappear, so that the water adsorbing the dust is dropped downward.
Therefore, the wet dust collector according to the present invention is different from a conventional method for collecting dust by making air-water contact by discharging bubbles to water stored in a container,
(1) There is no need to subdivide the bubbles.
(2) Since it is not necessary to subdivide the bubbles, the problem that the generated water bubbles are difficult to break is less likely to occur.
It has the characteristics.
Also, since the air discharged into the water rises along the water passage in the cylinder, large dust and heavy dust will remain in the water, but for fine dust that causes water quality deterioration, It will be discharged on the water bubble capturing means away from the water surface while being confined in the water bubbles. Therefore,
(3) Since the pollution rate of water stored in the container is reduced, the frequency of disposal of contaminated water is reduced.
Further, in the case of the device of the present invention, all members other than the drive source and the container, that is, the exhaust unit, the suction pipe, the cylinder, the shielding plate, and the water bubble capturing means are easily integrated in a vertically stacked structure. This is an extremely advanced invention that can be expected to have secondary effects such as easy separation work for maintenance such as filter replacement and dust removal, and easy reduction in size and weight.

本発明の一実施形態に係る湿式集塵装置の内部構造を示す概略断面図1 is a schematic cross-sectional view showing the internal structure of a wet dust collector according to an embodiment of the present invention. ２分割された状態の概略断面図Schematic sectional view of the state divided into two 運転開始時の状態の概略断面図Schematic sectional view of the state at the start of operation 集塵作業の終了間近の状態の概略断面図Schematic cross-sectional view of the state near the end of dust collection work 吸込みパイプユニットの斜視図Perspective view of suction pipe unit 排気ユニットの斜視図Perspective view of exhaust unit 筒体ユニットの斜視図Perspective view of cylindrical unit 容器の斜視図Perspective view of container 本発明の他の実施形態に係る湿式集塵装置の内部構造を示す概略断面図Schematic sectional drawing which shows the internal structure of the wet dust collector which concerns on other embodiment of this invention.

以下本発明を実施例に基づいて詳細に説明する。
Hereinafter, the present invention will be described in detail based on examples.

図１乃至図８は、本発明の実施例の一つを示すものである。
図１および図８に示す如く、上面開口の円柱状の容器１０の上面開口に、同形状の底部を有する排気ユニット１１が装着されている。容器１０と排気ユニット１１とは、図示しない金具によって締着されている。排気ユニット１１は、図６に示すごとく金属板製の蓋１２と内部に着脱自在に装着される不織繊維やウレタンなどを素材としたドーナツ形状のフィルター１３とから構成されている。蓋１２は、上面板１２Ａと側面板１２Ｂ、および底面板１２Ｃからなり、側面板１２Ｂには多数の通風穴１２Ｄが、底面板１２Ｃの中心には大径の底穴１２Ｅがそれぞれ穿設されている。フィルター１３は伸縮自在であって底穴１２Ｅから着脱される。上面板１２Ａには、吸込パイプ１４を嵌挿するためのリング金具１５が金具１５Ａ、１５Ｂで構成されて締付け固定されている。金具１５Ｂの貫通孔の内径寸法は、吸込パイプ１４の外径寸法よりも僅かに大きく（例えば０．２から０．３ｍｍ位大きく）するのがよい。 1 to 8 show one embodiment of the present invention.
As shown in FIGS. 1 and 8, an exhaust unit 11 having a bottom portion of the same shape is attached to the upper surface opening of a cylindrical container 10 having an upper surface opening. The container 10 and the exhaust unit 11 are fastened by metal fittings (not shown). As shown in FIG. 6, the exhaust unit 11 includes a lid 12 made of a metal plate and a donut-shaped filter 13 made of a non-woven fiber, urethane, or the like that is detachably mounted inside. The lid 12 includes a top plate 12A, a side plate 12B, and a bottom plate 12C. A large number of vent holes 12D are formed in the side plate 12B, and a large-diameter bottom hole 12E is formed in the center of the bottom plate 12C. Yes. The filter 13 is extendable and detachable from the bottom hole 12E. A ring fitting 15 for fitting the suction pipe 14 is constituted by the fittings 15A and 15B and is fastened and fixed to the upper surface plate 12A. The inner diameter dimension of the through hole of the metal fitting 15B is preferably slightly larger than the outer diameter dimension of the suction pipe 14 (for example, about 0.2 to 0.3 mm larger).

また、上面板１２Ａには、金具１５Ｂの貫通孔と同心軸で開けた穴１２Ｆにボルト１６で取り付けられた筒体１７が垂下している。図７に示す如く筒体１７は、円筒状で上方端部にはフランジ１７Ａが形成されボルト１６で固定されるようになっている。   Further, on the upper surface plate 12A, a cylindrical body 17 attached with a bolt 16 is suspended in a hole 12F opened concentrically with the through hole of the metal fitting 15B. As shown in FIG. 7, the cylindrical body 17 has a cylindrical shape, and a flange 17 </ b> A is formed at the upper end portion and is fixed by a bolt 16.

筒体１７の全長は、上面板１２Ａから容器１０の開口端までの寸法と、容器１０の開口端よりも所定寸法Ｌ１下方に設定した水面Ｌ０のレベルより下方位置で水深の略中間レベルＬ２とを合算した寸法に設定されている。また、水面Ｌ０の上方Ｌ３のレベルを中心軸にして全方位に排水口１７Ｃが穿設されている。排水口１７Ｃの上端付近には、遮蔽板１８が筒体１７の外壁に固定されている。遮蔽板１８は、円盤状で容器１０の内径よりも小径であり、図示しないが下面には下方に延びるリブが外方向に幾重にも形成されていて、排水口１７Ｃから噴射した水が接触すると下方に落とせるようになっている。排水口１７Ｃの下端付近には、水泡捕捉手段１９が配設されている 。   The total length of the cylindrical body 17 is such that the dimension from the upper surface plate 12A to the opening end of the container 10 and the substantially intermediate level L2 of the water depth at a position below the level of the water surface L0 set below the opening end of the container 10 by a predetermined dimension L1. Is set to the total dimension. Further, a drain port 17C is formed in all directions with the level L3 above the water surface L0 as the central axis. A shielding plate 18 is fixed to the outer wall of the cylindrical body 17 near the upper end of the drain port 17C. The shielding plate 18 has a disk shape and is smaller in diameter than the inner diameter of the container 10. Although not shown, ribs extending downward are formed on the lower surface in a number of outward directions, and when water sprayed from the drain port 17 </ b> C comes into contact with the shielding plate 18. It can be dropped down. A water bubble capturing means 19 is disposed near the lower end of the drain port 17C.

水泡捕捉手段１９は、円盤状で容器１０の内径よりも僅かに小径の多孔板１９Ａと同径でポリ塩化ビニリデン繊維を立体的に交錯させ交点を強固に点接着させた濾材フィルター１９Ｂ（武蔵野技研株式会社 商品名；クレハロンロック 厚さ約５０ｍｍ）で構成されている。多孔板１９Ａは筒体１７の外壁に固定され、濾材フィルター１９Ｂは筒体１７の外壁に固定された保持具２０でもって支持されている。濾材フィルター１９Ｂは、ドーナツ形状であって中穴を拡げて装着でき汚れた場合に交換できるようになっている。   The water bubble trapping means 19 is a filter medium filter 19B (Musashino Giken Co., Ltd.) having a discoid shape and having a diameter slightly smaller than the inner diameter of the container 10 and three-dimensionally intersecting polyvinylidene chloride fibers in a three-dimensional manner to firmly bond the intersection points. Co., Ltd. trade name; Kureharon lock, thickness of about 50 mm). The porous plate 19A is fixed to the outer wall of the cylindrical body 17, and the filter medium filter 19B is supported by a holder 20 fixed to the outer wall of the cylindrical body 17. The filter medium filter 19B has a donut shape and can be replaced when the inner hole is enlarged and attached.

吸込パイプ１４は、図５に示す如くＬ字状のパイプで、垂直に延びる部分が筒体１７内に挿入されるものであって、筒体１７の内径よりも小径寸法に設定され、この間隙は通水路２４を形成している。また、垂直部の下端開口１４Ａは開放されており、小石や金属片等の比較的大きな塵が吸込まれたときに直接水中に放出できるようになっている。また、下端開口１４Ａから所定寸法上方位置Ｌ５には、全方位かつ複数段に亘って小径の孔１４Ｂが穿設されている。この複数の孔１４Ｂは、吸込まれた含塵空気を水中水平方向に放出するためのものである（以下、下端開口１４Ａと複数の孔１４Ｂを総称して下端開口部１４Ｃと記述する）。また、垂直部の上方には、位置決め部材であるストッパ１４Ｄが吸込パイプ１４の外径を内径寸法とするドーナツ状で形成され固着されている。ストッパ１４Ｄの固着位置は、筒体１７の下端開口１７Ｂから所定寸法上方位置Ｌ４に下端開口１４Ａが臨むようにされている。ストッパ１４Ｄの下端面には、図示はしないがＯリングが装着されており、金具１５Ｂに当接して水漏れを防ぐようになっている。   The suction pipe 14 is an L-shaped pipe as shown in FIG. 5, and a vertically extending portion is inserted into the cylindrical body 17. The suction pipe 14 is set to have a smaller diameter than the inner diameter of the cylindrical body 17. Forms a water passage 24. Further, the lower end opening 14A of the vertical portion is opened so that it can be directly discharged into water when relatively large dust such as pebbles or metal pieces is sucked. In addition, a small-diameter hole 14B is bored at a position L5 above the predetermined dimension from the lower end opening 14A in all directions and in a plurality of stages. The plurality of holes 14B are for discharging the sucked dust-containing air in the horizontal direction in water (hereinafter, the lower end opening 14A and the plurality of holes 14B are collectively referred to as a lower end opening 14C). Further, a stopper 14D as a positioning member is formed and fixed in a donut shape having an outer diameter of the suction pipe 14 as an inner diameter above the vertical portion. The fixing position of the stopper 14D is such that the lower end opening 14A faces the upper position L4 of a predetermined dimension from the lower end opening 17B of the cylindrical body 17. Although not shown, an O-ring is attached to the lower end surface of the stopper 14D, and comes into contact with the metal fitting 15B to prevent water leakage.

吸込パイプ１４の水平部には、吸込パイプ１４に含塵空気を吸込ませるための吸引力発生装置２１が介在されている。吸引力発生装置２１には、空気量調整バルブ２２が介在された高圧空気管２３が接続されており、高圧空気管２３から高圧空気が吸引力発生装置２１に供給されると、内部に設けられた細口から吸込パイプ１４の下端開口１４Ａ側に向かって空気が噴射され、ベンチェリー効果によって負圧が発生して吸込パイプ１４に吸引力が付与される。ここで吸引力発生装置２１の上流側には負圧が発生するが、下流側には高圧空気が供給されているので大気圧よりも高い圧力となって下端開口１４Ａから放出される。従って、含塵空気が排気ユニット１１から排気されるまでの通風路は大気圧よりも高い圧力状態となっている。   A suction force generating device 21 is interposed in the horizontal portion of the suction pipe 14 to suck the dust-containing air into the suction pipe 14. A high pressure air pipe 23 with an air amount adjusting valve 22 interposed is connected to the suction force generating device 21. When high pressure air is supplied from the high pressure air pipe 23 to the suction force generating device 21, it is provided inside. Air is injected from the narrow opening toward the lower end opening 14 </ b> A side of the suction pipe 14, negative pressure is generated by the Benchery effect, and suction force is applied to the suction pipe 14. Here, negative pressure is generated on the upstream side of the suction force generating device 21, but since high-pressure air is supplied on the downstream side, the pressure becomes higher than atmospheric pressure and is discharged from the lower end opening 14 </ b> A. Therefore, the ventilation path until the dust-containing air is exhausted from the exhaust unit 11 is in a pressure state higher than the atmospheric pressure.

吸込パイプ１４がＬ字状に形成されているのは、金具１５Ｂの貫通孔に挿入し、この貫通孔との微小なクリアランスを利用して３６０度の回転を可能にさせ、接続口１４Ｅに接続されるホース（図示省略）を引き回して使用できるようにするためである。   The suction pipe 14 is formed in an L shape so that it is inserted into the through hole of the metal fitting 15B and can be rotated 360 degrees using a minute clearance with the through hole, and connected to the connection port 14E. This is because a hose (not shown) to be used can be routed and used.

続いて、運転の作動を説明する。
図２に示す如く排気ユニット１１には、筒体１７と水泡捕捉手段１９、及び遮蔽板１８が組み付けられた上に吸込パイプ１４が装着されているので、排気ユニット１１を持ち上げれば一つのユニットとして容器１０から分離できる。この状態で、容器１０に刻設されている標準水位線まで水を入れた後、排気ユニット１１を容器１０内に入れ、図示しない締め付け金具で排気ユニット１１と容器１０を締着する。 Subsequently, the operation of the operation will be described.
As shown in FIG. 2, the exhaust unit 11 has a cylindrical body 17, a water bubble capturing means 19, and a shielding plate 18 and a suction pipe 14 mounted thereon. Can be separated from the container 10. In this state, water is poured up to the standard water level line engraved in the container 10, and then the exhaust unit 11 is put into the container 10, and the exhaust unit 11 and the container 10 are fastened with a fastening bracket (not shown).

次に、空気量調整バルブ２２で調整された高圧空気を高圧空気管２３から吸引力発生装置２１に供給すると、負圧が発生して吸込パイプ１４に吸引力が付与される。即ち、吸引力発生装置２１の上流側の吸込パイプ１４および図示しないホースには負圧が発生し、下流側には高圧空気の噴射によって大気圧よりも高い空気流が発生する。そのときの状態図を図３に示す。   Next, when high-pressure air adjusted by the air amount adjustment valve 22 is supplied from the high-pressure air pipe 23 to the suction force generator 21, negative pressure is generated and suction force is applied to the suction pipe 14. That is, a negative pressure is generated in the suction pipe 14 and the hose (not shown) on the upstream side of the suction force generating device 21, and an air flow higher than the atmospheric pressure is generated on the downstream side by injection of high-pressure air. A state diagram at that time is shown in FIG.

図３において吸込パイプ１４に吸込まれた含塵空気は、吸込パイプ１４の下端開口部１４Ｃから通水路２４の水中に吐出される。下端開口部１４Ｃの複数の孔１４Ｂから吐出された含塵空気は、一旦は下降するが浮力によって上昇する。その際、筒体１７の下端開口１７Ｂは吸込パイプ１４の下端開口部１４Ｃよりも水中深い位置にあるので、含塵空気の大部分が、筒体１７の中に残ったままということになる。従って、多数の水泡となって通水路２４内を上昇することになる。含塵空気の吐出は連続的になされるので、通水路２４内は多数の水泡で満たされることになり、後続の水泡に押される形で上方の水泡は、やがて排水口１７Ｃから放出されることになる。   In FIG. 3, the dust-containing air sucked into the suction pipe 14 is discharged from the lower end opening 14 </ b> C of the suction pipe 14 into the water in the water passage 24. The dust-containing air discharged from the plurality of holes 14B of the lower end opening 14C once falls but rises by buoyancy. At that time, since the lower end opening 17B of the cylinder 17 is located deeper in the water than the lower end opening 14C of the suction pipe 14, most of the dust-containing air remains in the cylinder 17. Therefore, the inside of the water flow path 24 rises as many water bubbles. Since the dust-containing air is continuously discharged, the water passage 24 is filled with a large number of water bubbles, and the upper water bubbles are discharged from the drain port 17C in the form of being pushed by the subsequent water bubbles. become.

下端開口部１４Ｃから吐出された水泡は、排水口１７Ｃから出た段階でおおかたは破れるが、一部は被膜を維持したまま（即ち水泡のまま）放出される。   Most of the water bubbles discharged from the lower end opening 14C are torn at the stage of exiting from the drain port 17C, but a part of the water bubbles are discharged while maintaining the coating (that is, as water bubbles).

排水口１７Ｃから通風路２５内に吐出された空気には、塵が含まれている。しかし、含塵空気は全て、直前まで水泡被膜に閉じ込められていたわけであるので、自身又は後続の水泡が破れる際に放射される微細な水滴がミスト化し、塵を核にミストが凝集して水滴となり、自重で水泡捕捉手段１９に落ちる。こうして含塵空気は、矢印で示すように遮蔽板１８と水泡捕捉手段１９との間を水平方向に移動し、遮蔽板１８と容器１０との間に形成された間隙を通る過程でほとんど清浄化され、排気ユニット１１のフィルター１３で微細な塵が全て除去され通風穴１２Ｄから清浄な空気となって放出される。   The air discharged into the ventilation path 25 from the drain port 17C contains dust. However, since all the dust-containing air has been trapped in the foam film until just before, the fine water droplets radiated when the self or the subsequent water bubbles are broken become mist, and the mist aggregates around the dust and the water droplets. It falls to the water bubble capturing means 19 by its own weight. Thus, the dust-containing air moves in the horizontal direction between the shielding plate 18 and the water bubble capturing means 19 as indicated by the arrow, and is almost cleaned in the process of passing through the gap formed between the shielding plate 18 and the container 10. Then, all fine dust is removed by the filter 13 of the exhaust unit 11 and is discharged as clean air from the ventilation hole 12D.

一方、排水口１７Ｃから通風路２５に吐出された含塵水は、勢いのある一部が遮蔽板１８に衝突して落水し、他は大矢印の如く水泡捕捉手段１９上に散水される。   On the other hand, part of the dust-containing water discharged from the drain port 17C to the ventilation path 25 collides with the shielding plate 18 and falls, and the other is sprinkled on the water bubble capturing means 19 as indicated by a large arrow.

水泡捕捉手段１９上に放出される水の一部は、通水路２４内で発生した水泡が排水口１７Ｃから吐出されるときに破裂されないままであるが、この水泡は、多孔板１９Ａの孔や濾材フィルター１９Ｂの網目に捕捉されている。水泡の大きさは、吐き出されたのちに幾つかの水泡が合体して大きくなったものや吐き出されたときと同じで小さなものもある。小さな水泡で多孔板１９Ａの孔を通過したものは濾材フィルター１９Ｂの網目に捕捉されている。また、含塵水には、紙屑や塗膜片および樹脂片などの比重の軽いゴミも含まれている場合があり、これらのゴミの中で多孔板１９Ａの孔を通過できないものは多孔板１９Ａ上に載置されたまま残ることになるが、除去しやすく保守は容易である。   Some of the water discharged onto the water bubble capturing means 19 remains unruptured when the water bubbles generated in the water passage 24 are discharged from the drain port 17C. It is trapped in the mesh of the filter medium filter 19B. The size of the water bubbles is the same as that when some water bubbles are combined after being exhaled, and the size is the same as when they are exhaled. Small water bubbles that have passed through the holes of the porous plate 19A are trapped in the mesh of the filter medium filter 19B. In addition, the dust-containing water may contain dust having a low specific gravity, such as paper scraps, coating film pieces, and resin pieces. Among these dusts, those that cannot pass through the holes of the porous plate 19A are included in the porous plate 19A. It remains on the top, but it is easy to remove and easy to maintain.

破裂せず水泡捕捉手段１９に捕捉される水泡の量は、容器１０内の水の汚れに比例して多くなる。水の汚れは、含塵空気が気水接触することで汚濁成分が水側に移動することで促進されるわけであるが、本発明装置の場合には、水中に多数の気泡を放出させるという手法を採用せず、水中に吐出される空気を、素早く筒体１７の通水路２４内に導入させ、この通水路２４内に存在する水で気水接触されるもののこの水は水泡となって排水口１７Ｃから放出される。従って最も汚濁する通水路２４内の水の大部分は、容器１０内の水に混じることなく排出される（厳密には排出されるのではなく、濾材フィルター１９Ｂを通過して容器１０内に還り、循環する）ので、水の汚濁速度は小さい。故に、破裂せず水泡捕捉手段１９に捕捉される水泡の量は、容器１０内の水の汚れに比例して多くなるとはいえ、汚れにくいものとなっている。またこの水泡捕捉手段１９によって移動が規制された塵埃混じりの水泡は、筒体１７の排水口１７Ｃから放出される水の直撃を受けて消泡（破裂）し、内部の塵埃が空気と共に周囲に飛散して消失する。そのときに飛散した塵埃は、一部が落水に直接接触し、他は一旦、濾材フィルター１９Ｂに付着して捕捉されたのち落水によって洗い流され容器１０の水中に移動する。   The amount of water bubbles captured by the water bubble capturing means 19 without rupturing increases in proportion to the contamination of the water in the container 10. The contamination of water is promoted by the contamination component moving to the water side when the dust-containing air comes into contact with air and water, but in the case of the device of the present invention, a large number of bubbles are released into the water. Although the method is not adopted, the air discharged into the water is quickly introduced into the water passage 24 of the cylindrical body 17, and the water present in the water passage 24 is brought into air-water contact. It is discharged from the drain port 17C. Therefore, most of the water in the water channel 24 that is most polluted is discharged without being mixed with the water in the container 10 (strictly, it is not discharged but passes through the filter medium filter 19B and returned to the container 10). The water pollution rate is small. Therefore, although the amount of water bubbles captured by the water bubble capturing means 19 without being ruptured increases in proportion to the water contamination in the container 10, it is difficult to become dirty. Further, the water bubbles mixed with dust whose movement is restricted by the water bubble capturing means 19 are subjected to direct blow of water discharged from the drain port 17C of the cylindrical body 17 to be defoamed (ruptured), and the dust inside is surrounded with the air. Dissipate and disappear. Part of the dust scattered at that time is in direct contact with the falling water, and the other dust is once attached to the filter medium filter 19B and captured, then washed away by the falling water and moved into the water of the container 10.

集塵が継続されると、容器１０の底部には塵が汚泥となって堆積し、その体積増加に伴って水位も上昇する。この水位上昇や汚泥の堆積状態を図示しない水位センサや覗き窓で検知して集塵作業を中止し、図２に示すように排気ユニット１１その他を容器１０から分離して、それぞれの清掃を行う。この清掃作業は、容器１０に関しては本例の場合、凝集剤を投入して攪拌して上層水は排水し、凝固汚泥は産廃処理をするようにしたが、水全量を一旦取り出し、本発明装置外の水処理設備にその処理を任せるようにしても良い。また排気ユニット１１その他については、水泡捕捉手段に捕捉されている大きなゴミは、刷毛などで取り除き水洗いし、フィルター１３と濾材フィルター１９Ｂは交換或いは洗浄することになる。   When dust collection is continued, dust accumulates as sludge at the bottom of the container 10, and the water level rises as the volume increases. The rising of the water level and the accumulation state of the sludge are detected by a water level sensor and a viewing window (not shown) to stop the dust collecting operation, and the exhaust unit 11 and others are separated from the container 10 as shown in FIG. . In the case of this example, the cleaning operation is performed in the case of the container 10 by adding a flocculant and stirring to drain the upper layer water and draining the solidified sludge. You may make it leave the processing to an outside water treatment facility. As for the exhaust unit 11 and the like, large dust captured by the water bubble capturing means is removed with a brush or the like and washed with water, and the filter 13 and the filter medium filter 19B are replaced or washed.

以上説明した如く本実施形態によれば、吸い込まれた含塵空気が容器内の貯留水を直接攪拌することなく水泡となって通水路２４を上昇し、その過程で塵を通水路２４内の水に接触して濁水とし、濁水被膜となった水泡を水面上で捕捉させ、濾材フィルター１９Ｂで濾過させ、水面に落下させることとなる。
As described above, according to the present embodiment, the sucked dust-containing air rises as a water bubble without directly stirring the stored water in the container, and rises through the water passage 24. The water bubbles that are in contact with water to become muddy water and become a muddy water film are captured on the water surface, filtered through the filter medium filter 19B, and dropped onto the water surface.

実施例１として説明してきた本発明装置にあっても、初期の目的は十分に達せられるものであるが、試作実験段階においてメンテナンス面で多少の問題を抱えていることが判明した。即ち、実施例１の本発明装置では、空気中に微細な塵埃を多く含む場合、排気ユニット１１が汚れて詰まりやすくなり、頻繁な掃除の必要が生じてしまったのである。そこで図９の如く、遮蔽板１８の形状を下方に開く半円球状に変更したところ、排気ユニット１１の目詰まりが減少した。減少の理由については恐らく既述の通りではないかと思われるが真偽は定かでない。
Even with the device of the present invention described as the first embodiment, the initial purpose can be sufficiently achieved, but it has been found that there are some problems in terms of maintenance in the prototype experiment stage. That is, in the device of the present invention of Example 1, when the air contains a lot of fine dust, the exhaust unit 11 becomes dirty and easily clogged, and frequent cleaning is required. Therefore, as shown in FIG. 9, when the shape of the shielding plate 18 is changed to a semispherical shape that opens downward, clogging of the exhaust unit 11 is reduced. The reason for the decrease is probably as described above, but the truth is not clear.

本発明は実施例１或いは２に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる（これらを実施例３として列挙する）。勿論、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）吸込みパイプと筒体の２重管で通水路を例示したが、１つの通路を仕切り板で区切った対面路を形成して、吸込み路と通水路を構成してもよい。
（２）通水路の中間には排水口を設けただけであるが、更に排水口の上方の通水路を遮断するための部材を配置してもよい。
（３）筒体の下端開口から水が吸込まれるようにしたが、下端開口を閉鎖して下端側部を開口させても良い。
（４）吸引力発生装置は、エアーコンプレッサーに限らず、電動式ファンで吸引力を発生させるものを用いてもよい。
（５）濾材フィルター１９Ｂの上面のみに多孔板Ａを配置したもので説明してきたが、図９の如く上下双方に多孔板１９Ａを配置するようにしても良い。清掃その他の際に排気ユニット１１が組み付けられたユニットを床などに置く場合、濾材フィルター１９Ｂの下面に多孔板１９Ａが存在していると、濾材フィルター１９Ｂ自体には強度がないために生じる変形を防止でき、下面に塵埃が汚泥状に付着しているという外観をある程度隠すことができ、好適である。なおこの時下方に配置される多孔板１９Ａは、主として水泡捕捉手段の形状保持を目的とするものであり、上側の多孔板１９Ａに求められる気泡の捕捉といった機能が求められるものではない。従って、図では部材数（種類数）を少なくするという意味で同一部材を用いているが、落水能力を損なわない、保形強度がある、というものであれば良く、上下の多孔板１９Ａを同部材とする特段の必要があるわけではない。
The present invention is not limited to Example 1 or 2. For example, the following embodiments are also included in the technical scope of the present invention (these are listed as Example 3). Of course, various modifications other than those described below can be made without departing from the scope of the invention.
(1) Although the water passage is exemplified by the suction pipe and the double tube of the cylindrical body, the suction passage and the water passage may be configured by forming a facing passage in which one passage is divided by a partition plate.
(2) Although only the drainage port is provided in the middle of the water channel, a member for blocking the water channel above the water channel may be arranged.
(3) Although water is sucked from the lower end opening of the cylinder, the lower end opening may be closed to open the lower end side portion.
(4) The suction force generation device is not limited to an air compressor, and a device that generates suction force with an electric fan may be used.
(5) Although the description has been made with the porous plate A arranged only on the upper surface of the filter medium filter 19B, the porous plate 19A may be arranged on both the upper and lower sides as shown in FIG. When the unit with the exhaust unit 11 is placed on the floor or the like for cleaning or other purposes, if the perforated plate 19A is present on the lower surface of the filter medium filter 19B, the filter medium filter 19B itself is not deformed, resulting in deformation. It is possible to prevent the appearance that dust is attached to the lower surface in the form of sludge, which is preferable. At this time, the porous plate 19A disposed below is mainly for the purpose of maintaining the shape of the water bubble trapping means, and does not require the function of trapping bubbles required for the upper porous plate 19A. Therefore, in the figure, the same member is used in the sense of reducing the number of members (number of types), but it is sufficient if it has a shape retaining strength without impairing the water falling ability, and the upper and lower porous plates 19A are the same. There is no particular need for a member.

１０ 容器
１１ 排気ユニット
１２ 蓋
１３ フィルター
１４ 吸込パイプ
１５ リング金具
１６ ボルト
１７ 筒体
１８ 遮蔽板
１９ 水泡捕捉手段
２０ 保持具
２１ 吸引力発生装置
２２ 空気量調整バルブ
２３ 高圧空気管
２４ 通水路
２５ 通風路 DESCRIPTION OF SYMBOLS 10 Container 11 Exhaust unit 12 Cover 13 Filter 14 Suction pipe 15 Ring metal fitting 16 Bolt 17 Cylindrical body 18 Shielding board 19 Water bubble capture means 20 Holder 21 Suction force generator 22 Air quantity adjustment valve 23 High pressure air pipe 24 Water passage 25 Air passage

Claims (2)

水を貯留する容器と、
該容器の上面開口を覆う排気ユニットと、
該排気ユニットに固定され該容器内に垂下して水面下に開口させた吸込パイプと、
該吸込パイプに介在させ吸引力を発生させる吸引力発生装置と、
該吸込パイプの外周に通水路を形成するために配置され下端開口を該吸込パイプの下端開口よりも延出させるとともに水面上に排水口を設けた筒体と、
該排水口の上方で該筒体に固定された遮蔽板と、
を備え、該筒体に設けた該排水口と該容器内の水面との間には、該容器内径よりも僅かに小径であって水面とほぼ平行な金網又はパンチングメタル製の多孔板を有する水泡捕捉手段が配置されていることを特徴とする湿式集塵装置。 A container for storing water;
An exhaust unit covering the top opening of the container;
A suction pipe which is fixed to the exhaust unit and hangs down in the container and opens below the water surface;
A suction force generator for generating suction force interposed in the suction pipe;
A cylinder that is arranged to form a water passage on the outer periphery of the suction pipe and has a lower end opening extending from the lower end opening of the suction pipe and having a drain outlet on the water surface;
A shielding plate fixed to the cylinder above the drain;
A perforated plate made of a metal mesh or punching metal that is slightly smaller in diameter than the inner diameter of the container and substantially parallel to the water surface, between the drain port provided in the cylinder and the water surface in the container. A wet dust collecting device, wherein water bubble capturing means is arranged. 該遮蔽板は、下方に開く湾曲内壁面にて構成されるものである請求項１記載の湿式集塵装置。
The wet dust collector according to claim 1, wherein the shielding plate is constituted by a curved inner wall surface that opens downward.
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