JP4246609B2 - Fume collector - Google Patents

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JP4246609B2
JP4246609B2 JP2003397282A JP2003397282A JP4246609B2 JP 4246609 B2 JP4246609 B2 JP 4246609B2 JP 2003397282 A JP2003397282 A JP 2003397282A JP 2003397282 A JP2003397282 A JP 2003397282A JP 4246609 B2 JP4246609 B2 JP 4246609B2
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義次 高見
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チコーエアーテック株式会社
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本発明は、例えば、レーザー加工時や溶接作業時に発生する埃、塵、煙、ガス、金属粉等のヒュームを捕集するために用いられるヒューム捕集機に関する。   The present invention relates to a fume collector used for collecting fumes such as dust, dust, smoke, gas, and metal powder generated during laser processing or welding work, for example.

ヒューム捕集機のフィルター面に炭酸カルシウムやゼオライトに代表される吸着性、脱臭性等を備えたいわゆるプリコート剤をあらかじめ付着させてコート層を形成させ、吸引空気中に含まれるヒュームを前記コート層に吸着させて捕集することにより、フィルターの目詰まりを防止しつつヒュームの捕集を行うことは従来から行われており、例えば、捕集機の内部に配置したブロアーによる吸引作用を利用して外部からヒューム含有空気を吸引するとともに、コート層を形成させる技術が開示されている（特許文献１参照）。
特開平１０−２９６０２６号公報 A coating layer is formed by previously attaching a so-called pre-coating agent having adsorption and deodorizing properties represented by calcium carbonate and zeolite to the filter surface of the fume collector, and the fumes contained in the suction air are formed by the coating layer. It has been conventionally performed to collect fume while preventing the filter from being clogged by adsorbing and collecting it, for example, using a suction action by a blower arranged inside the collector. In addition, a technique for sucking fume-containing air from the outside and forming a coat layer is disclosed (see Patent Document 1).
Japanese Patent Laid-Open No. 10-296026

しかしながら、上記公報に記載されているヒューム捕集機は、吸引空気中に含まれるヒュームをプリコート剤からなるコート層だけで捕集するものであるため、２週間程度運転すると、ヒュームがプリコート剤に混ざり込んでプリコート剤が劣化し、通常数ｍｍのコート層の形成が不十分になり、このためフィルターに目詰まりが生じて圧力損失が増加するとともに、フィルター寿命も短くなるという問題があった。   However, the fume collector described in the above publication collects the fume contained in the suction air only by the coat layer made of the precoat agent, so that the fume becomes a precoat agent when operated for about two weeks. As a result, the precoat agent deteriorates and the formation of a coat layer of several millimeters is usually insufficient. This causes clogging of the filter, increasing pressure loss, and shortening the filter life.

本発明は上記問題点に鑑みてなされたものであり、その目的は、運転中の圧力損失の安定性に優れ、これによりフィルター寿命を長期間維持することのできるヒューム捕集機を提供することにある。   The present invention has been made in view of the above problems, and an object thereof is to provide a fume collector that is excellent in stability of pressure loss during operation and can maintain the filter life for a long time. It is in.

請求項１のヒューム捕集機は、前処理室と、該前処理室の下流側に配置した後処理室と、該後処理室の下流側に配置した空気吸引装置とを備え、前記前処理室は、前記空気吸引装置による吸引作用により外部からヒューム含有空気を導入する吸引ダクトと、上部にヘッドスペースを有し、かつ前記吸引したヒューム含有空気が下方へ向けて通過する、樹脂製発泡体または活性炭からなる球状吸着体を充填した球体層が配置された球体収容部とを有し、前記後処理室は、該後処理室の下部に配置され、前記球体収容部を通過した吸引空気の上方への作用力を受けるプリコート剤と、該プリコート剤の上方に配置され、上方へ舞い上げられた前記プリコート剤が付着することでコート層を形成させるフィルターとを有する。すなわち、請求項１のヒューム捕集機は、従来のプリコート機能を備えたヒューム捕集機に加えて、その上流側に、樹脂製発泡体または活性炭からなる球状吸着体を充填した球体層を配置して前処理としてヒューム捕集機を併設したものである。 The fume collector according to claim 1 includes a pretreatment chamber, a post-treatment chamber disposed on the downstream side of the pretreatment chamber, and an air suction device disposed on the downstream side of the posttreatment chamber. chamber, a suction duct for introducing the fumes laden air from the outside by the suction action of the air suction device has a headspace at the top, and fume-containing air which has the suction passes downward, the resin foam Or a sphere housing portion in which a sphere layer filled with a spherical adsorbent made of activated carbon is disposed, and the post-treatment chamber is disposed at a lower portion of the post-treatment chamber, and the suction air that has passed through the sphere housing portion. A precoat agent that receives an upward force, and a filter that is disposed above the precoat agent and forms a coat layer by adhering the precoat agent that has been lifted upward. That is, the fume collector according to claim 1 has a spherical layer filled with a spherical adsorbent made of resin foam or activated carbon on the upstream side in addition to the conventional fume collector having a precoat function. As a pre-treatment, a fume collector is also added.

請求項２のヒューム捕集機は、前記球状吸着体の粒径が２〜６ｍｍであることを特徴とするものである。   The fume collector according to claim 2 is characterized in that the spherical adsorbent has a particle diameter of 2 to 6 mm.

請求項３のヒューム捕集機は、前記球状吸着体がポリエチレン、ポリプロピレンまたはポリスチレンから選ばれる汎用樹脂を構成材料とする樹脂製発泡体からなることを特徴とするものである。   The fume collector according to claim 3 is characterized in that the spherical adsorbent is made of a resin foam having a general-purpose resin selected from polyethylene, polypropylene, or polystyrene as a constituent material.

請求項１のヒューム捕集機によれば、下流に配置された空気吸引装置の吸引作用により吸引ダクトから外部のヒューム含有空気が球体収容部に吸引され、このヒューム含有空気が球体層を構成する多数の球状吸着体の間隙を通って球体層を通過する際に、空気中に含まれるヒュームが確実に吸着されるとともに、球体層全体の空気抵抗が少なくなるように個々の球状吸着体が上下左右に微小な運動を行うため圧力損失の安定化を図ることができ、これにより下流に配置されたフィルター寿命を長時間維持することができる。   According to the fume collector of claim 1, external fume-containing air is sucked from the suction duct into the sphere housing portion by the suction action of the air suction device arranged downstream, and this fume-containing air constitutes the sphere layer. When passing through the sphere layer through the gaps between many sphere adsorbers, the fume contained in the air is reliably adsorbed and the individual sphere adsorbers move up and down to reduce the air resistance of the entire sphere layer. Since the minute movement is performed to the left and right, the pressure loss can be stabilized, and thereby the life of the filter disposed downstream can be maintained for a long time.

請求項２のヒューム捕集機によれば、運転中において、粒径２〜６ｍｍの球状吸着体からなる球体層は、吸引空気中に含まれるヒュームの吸着能力を維持しつつ、上下左右の微小運動が活発化されて圧力損失の安定性を向上させることができ、これにより下流に配置されたフィルター寿命を長時間維持することができる。   According to the fume collector of the second aspect, during operation, the spherical layer composed of the spherical adsorbent having a particle diameter of 2 to 6 mm maintains the adsorption capability of the fumes contained in the suction air, and is fine in the vertical and horizontal directions. The movement can be activated to improve the stability of the pressure loss, so that the life of the filter disposed downstream can be maintained for a long time.

請求項３のヒューム捕集機によれば、吸引されたヒューム含有空気が樹脂製発泡体からなる球状吸着体の上部表面に当たると、球体層のうち上部の球状吸着体がその上方にあるヘッドスペースを上下方向に渦状に高速運動しながらヒュームを吸着するとともに、残りの球状吸着体も上下左右の微小運動により、球状吸着体同士の摩擦による帯電により、ヒュームの吸着能力を高めることができるとともに、さらに圧力損失の安定性をより一層向上させることができるので、下流に配置されたフィルター寿命を長時間維持することができる。   According to the fume collector of claim 3, when the sucked fume-containing air hits the upper surface of the spherical adsorbent made of a resin foam, the upper spherical adsorbent in the spherical layer is above the head space. While adsorbing fumes while moving up and down at high speed in the vertical direction, the remaining spherical adsorbers can also increase the adsorption capacity of the fumes by charging by friction between the spherical adsorbents by micro movements up and down, left and right, Furthermore, since the stability of the pressure loss can be further improved, the life of the filter disposed downstream can be maintained for a long time.

本発明のヒューム捕集機は、レーザー加工時や溶接作業時に発生する埃、塵、煙、ガス、金属粉等（以下、総称してヒュームという）を捕集するにあたり効果的に用いられるものである。これらの中で捕集対象としてレーザー加工時に発生する煙を例示すれば、例えば、ゴム印、木材の表札、アクリル樹脂を用いた彫刻等、ペットボトルへの印字等、各種樹脂の彫刻・印字、ダンボールへの印字をする際に発生する煙が挙げられる。また、本発明のヒューム捕集機の捕集対象には、上記ヒュームが発生した際に生じる臭気成分も含まれる。   The fume collector of the present invention is effectively used for collecting dust, dust, smoke, gas, metal powder, etc. (hereinafter collectively referred to as fume) generated during laser processing or welding work. is there. Of these, smoke generated during laser processing as an example of collection can be exemplified by rubber stamps, wood nameplates, engraving using acrylic resin, printing on plastic bottles, etc. Smoke generated when printing on is used. Moreover, the odor component produced when the said fumes generate | occur | produces is also contained in the collection object of the fume collector of this invention.

以下、本発明の実施の形態を図１に基づいて説明する。図１は、本発明に係るヒューム捕集機の内部構造の一例を示す一部断面正面図であり、図中、２はヒューム捕集機１の外観を構成する箱型のケースであり、このケース２の内部には、外部から導入した吸引空気中に含まれるヒュームを捕集するための各種の機能部材が収納配置されている。ケース２の内部には、上下方向に隔壁板５が設けられ、これによりケース２の上流側から順に前処理３と後処理室４が区画されて配置されるとともに、隔壁板５の底部に開口部を形成することで、前処理室３と後処理室４とが連通するように構成されている。また、後処理室４の下流側には、ダクト７を介してモータ８１によって回転するファン（図示せず）を備えた空気吸引装置８（ブロアー）が配置され、濾過後の清浄空気を排出ダクト９から外部に排出できるように構成されている。   Hereinafter, an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a partial cross-sectional front view showing an example of the internal structure of a fume collector according to the present invention. In the figure, reference numeral 2 denotes a box-shaped case constituting the appearance of the fume collector 1, Inside the case 2, various functional members for collecting fumes contained in suction air introduced from the outside are accommodated and disposed. Inside the case 2, a partition plate 5 is provided in the vertical direction, so that the pretreatment 3 and the post-treatment chamber 4 are partitioned and arranged in order from the upstream side of the case 2, and open to the bottom of the partition plate 5. By forming the portion, the pretreatment chamber 3 and the posttreatment chamber 4 are configured to communicate with each other. In addition, an air suction device 8 (blower) provided with a fan (not shown) that is rotated by a motor 81 via a duct 7 is disposed on the downstream side of the post-treatment chamber 4, and clean air after filtration is discharged to the duct. It is comprised so that it can discharge outside from 9.

前処理室３の上部には吸引ダクト６が接続され、空気吸引装置８の吸引力をダクト７、後処理室４及び隔壁板５の底部に設けた開口部を介して前処理室３側に及ぼすことにより、ヒューム捕集機１の外部にあるヒューム含有空気を導入するように構成されている。   A suction duct 6 is connected to the upper part of the pretreatment chamber 3, and the suction force of the air suction device 8 is supplied to the pretreatment chamber 3 side through the duct 7, the post treatment chamber 4, and an opening provided at the bottom of the partition plate 5. By being exerted, it is configured to introduce the fume-containing air existing outside the fume collector 1.

吸引ダクト６の下方には、吸引したヒューム含有空気が通過可能な小孔を有する空気流通板３２が設けられ、空気流通板３２より上部全体が球体収容部３１を構成している。この球体収容部３１は、その中央部よりやや下側に軽量の球状吸着体３３が多数充填されてなる球体層が配置されており、この球体層の上部にはヘッドスペースが設けられている。吸引された空気は上記ヘッドスペースを下方へ向かって流れ、上記球体層を構成する多数の球状吸着体３３の間隙を通って球体層を通過する。空気中に含まれるヒュームは、球状吸着体３３の表面に沿って流れるときに球状吸着体３３の表面に吸着され、いったん吸着が始まると吸着されたヒュームに上方から流れてきた別のヒュームが新たに吸着され、所定の吸着容量に達するまで継続して吸着が行われる。また、吸引空気が球体層を通過するときには、球体層全体の空気抵抗が小さくなるように、個々の球状吸着体３３は上下左右に微小な運動を行い、これにより吸引空気が球体層を通過する前後において圧力損失がほとんど増加しない、すなわち、圧力損失の安定化を図ることができる。   Below the suction duct 6, an air flow plate 32 having a small hole through which the sucked fume-containing air can pass is provided, and the entire upper portion of the air flow plate 32 constitutes a sphere containing portion 31. The spherical body containing portion 31 is provided with a spherical layer filled with a large number of lightweight spherical adsorbers 33 slightly below the central portion, and a head space is provided above the spherical layer. The sucked air flows downward in the head space, and passes through the spherical layer through the gaps between the large number of spherical adsorbers 33 constituting the spherical layer. The fumes contained in the air are adsorbed on the surface of the spherical adsorbent 33 when flowing along the surface of the spherical adsorbent 33, and once the adsorption starts, another fume that has flowed from above is newly added to the adsorbed fume. Adsorption is continuously performed until a predetermined adsorption capacity is reached. Further, when the suction air passes through the sphere layer, the individual spherical adsorbers 33 perform minute movements in the vertical and horizontal directions so that the air resistance of the entire sphere layer is reduced, whereby the suction air passes through the sphere layer. The pressure loss hardly increases before and after, that is, the pressure loss can be stabilized.

本発明において球状吸着体３３とは、表面もしくは内部に空隙を有し、ヒュームの吸着能を有するとともに、粒径が少なくとも１ｍｍ以上の球状体であって、従来のプリコート剤とは異なるものをいい、例えば、樹脂製発泡体や活性炭が好適に用いられる。球状吸着体３３の粒径は、吸引空気中に含まれるヒュームを十分に吸着できる吸着能を保持しつつ、吸引空気が球体層を通過する前後における圧力損失の安定化を図る観点から、好ましくは２〜６ｍｍ、更に好ましくは２〜５ｍｍ、特に好ましくは３〜４ｍｍである。すなわち、球状吸着体３３の粒径が１ｍｍを下回ると、球体層を構成する球状吸着体３３の間隙が少なくなってその運動性が低下するため、圧力損失が増加するおそれがあり、他方、球状吸着体３３の粒径が８ｍｍを上回ると、球体層を構成する球状吸着体３３の間隙が大きくなり、十分にヒュームを吸着できなくなるおそれがある。   In the present invention, the spherical adsorbent 33 is a spherical body having a void on the surface or inside, having fume adsorption ability, and having a particle diameter of at least 1 mm, and different from a conventional precoat agent. For example, a resin foam or activated carbon is preferably used. The particle size of the spherical adsorbent 33 is preferably from the viewpoint of stabilizing the pressure loss before and after the suction air passes through the spherical layer, while maintaining the adsorption capacity capable of sufficiently adsorbing the fumes contained in the suction air. It is 2-6 mm, More preferably, it is 2-5 mm, Most preferably, it is 3-4 mm. That is, if the particle size of the spherical adsorbent 33 is less than 1 mm, the gap between the spherical adsorbents 33 constituting the spherical layer is reduced and its mobility is lowered, so that the pressure loss may be increased. If the particle size of the adsorbent 33 exceeds 8 mm, the gap between the spherical adsorbents 33 constituting the spherical layer becomes large, and there is a possibility that the fumes cannot be sufficiently adsorbed.

樹脂製発泡体からなる球状吸着体３３の構成材料としては汎用樹脂であれば特に限定されないが、経済性の観点から、通常は、ポリエチレン、ポリプロピレンまたはポリスチレンが好ましい。発泡体の形態としては単独気泡、連続気泡のいずれでもよいが、吸引空気が球体層を通過する前後における圧力損失の安定化を図る観点から、通常は単独気泡が好ましい。   The constituent material of the spherical adsorbent 33 made of a resin foam is not particularly limited as long as it is a general-purpose resin, but polyethylene, polypropylene or polystyrene is usually preferable from the viewpoint of economy. The form of the foam may be either single bubbles or open cells, but single bubbles are usually preferred from the viewpoint of stabilizing pressure loss before and after the suction air passes through the spherical layer.

空気流通板３２としては、吸引したヒューム含有空気が通過可能で、上記球状吸着体３３が通過できない形態を有していれば、その構造は特に限定されず、例えば、三角形状、四角形状、多角形状、球形、若しくは楕円形等適宜の形状を小孔として形成したパンチングメタルが好ましく用いられ、これらの中でも、吸引空気が球体層を通過する前後における圧力損失の安定化を図る観点から、球形に形成された小孔からなるパンチングメタルが好ましく用いられる。また、球形に形成された小孔からなるパンチングメタルを用いる場合、孔径として１ｍｍ以上、２ｍｍ未満で、開孔率３８〜４２％とすることが特に好ましい。かかる構成を有することで、球体層のうち、概略下部１／３にある球状吸着体３３のヒューム吸着能を高めることができる。   The structure of the air circulation plate 32 is not particularly limited as long as the sucked fume-containing air can pass therethrough and the spherical adsorbent 33 cannot pass therethrough. For example, the air circulation plate 32 has a triangular shape, a square shape, a polygonal shape, and the like. A punching metal having an appropriate shape such as a shape, a sphere, or an ellipse is preferably used as a small hole, and among these, from the viewpoint of stabilizing the pressure loss before and after the suction air passes through the sphere layer, the shape is spherical. Punching metal composed of small holes formed is preferably used. Moreover, when using the punching metal which consists of a small hole formed in the spherical shape, it is especially preferable that the hole diameter is 1 mm or more and less than 2 mm, and the opening ratio is 38 to 42%. By having such a configuration, it is possible to increase the fume adsorption capacity of the spherical adsorbent 33 that is approximately in the lower third of the spherical layer.

球状吸着体３３として樹脂製発泡体を用いた場合、吸引されたヒューム含有空気が下方への空気流れを作って球状吸着体３３の上部表面に当たると、図１に示すように、球体層のうち上部１／４程度の球状吸着体３３が上方のヘッドスペースへ向けて跳ね上がり、次いで球体層へ向けて落下するという具合に、外観上上下方向に渦状に高速運動する。これにより、上下方向に高速運動する球状吸着体にヒュームが吸引されるとともに、高速運動していない残りの球状吸着体３３についても、上下左右の微小運動により球状吸着体３３同士の摩擦による帯電によりヒュームの吸着能力をより一層高めることができるとともに、吸引空気が球体層を通過する前後における圧力損失の安定化をより一層高めることができる。上記の説明より、本発明では、ヒュームの吸着能力の点から、樹脂製発泡体からなる球状吸着体３３が通常用いられるが、例えば、静電気を嫌う場所で運転する場合には、活性炭からなる球状吸着体３３が用いられる。   When a resin foam is used as the spherical adsorbent 33, when the sucked fume-containing air creates a downward air flow and hits the upper surface of the spherical adsorbent 33, as shown in FIG. The spherical adsorber 33 of about the upper 1/4 moves up and down in the vertical direction in appearance, such as jumping toward the upper head space and then falling toward the spherical layer. As a result, fume is sucked into the spherical adsorbent that moves at high speed in the vertical direction, and the remaining spherical adsorbents 33 that do not move at high speed are also charged by friction between the spherical adsorbents 33 due to minute movement in the vertical and horizontal directions. The fume adsorption capacity can be further enhanced, and the stabilization of pressure loss before and after the suction air passes through the spherical layer can be further enhanced. From the above description, in the present invention, the spherical adsorbent 33 made of a resin foam is usually used from the viewpoint of fume adsorption capacity. For example, when operating in a place where static electricity is disliked, the spherical adsorbent 33 made of activated carbon is used. An adsorbent 33 is used.

球体層を通過した吸引空気は、その下方に配置された後述するヒューム回収部３５の上方を図１の左方向に流れ、隔壁板５の底部に形成された開口部を通過して後処理室４に導かれる。後処理室４の底部には、上記開口部を塞ぐようにして所定量のプリコート剤４２が収容されているとともに、プリコート剤４２の上方にはフィルター４１が縦方向に配置されている。プリコート剤４２は上記開口部を通過した吸引空気の上方への作用力を受けて舞い上げられて、フィルター４１全面に付着して、約２分間で厚み１．５ｍｍ程度のコート層を形成するように構成されている。かかるコート層が形成されると、前記球体層にて吸着されなかったヒュームが極微量存在する場合でも、上記コート層に捕集されるので、フィルター４１の目詰まりが防止でき、ヒューム捕集機１の通過前後における圧力損失の安定化を図ることができるとともに、これによりフィルター４１のフィルター寿命を長期間維持することができる。最後に、フィルター４１を通過した清浄空気は、ダクト７を通り、排出ダクト９から外部に排出される。ここで、本発明においてプリコート剤４２は、吸着性、脱臭性を備え、かつ粒径として、例えば、１〜５μｍのものであれば公知のものを用いることができる。また、フィルター４１は、プリコート剤４２を捕らえ、付着させ所定の厚みのコート層を形成させる成型部材としての役割を有するものであれば、形状等は特に限定されない。   The suction air that has passed through the spherical layer flows to the left in FIG. 1 above a later-described fume collection unit 35 disposed below, passes through an opening formed at the bottom of the partition plate 5 and passes through the post-processing chamber. Led to 4. A predetermined amount of precoat agent 42 is accommodated at the bottom of the post-treatment chamber 4 so as to close the opening, and a filter 41 is disposed above the precoat agent 42 in the vertical direction. The precoat agent 42 is lifted by receiving the upward force of the suction air that has passed through the opening, and adheres to the entire surface of the filter 41 to form a coat layer having a thickness of about 1.5 mm in about 2 minutes. It is configured. When such a coating layer is formed, even if a very small amount of fumes that are not adsorbed by the spherical layer is present, they are collected by the coating layer, so that the filter 41 can be prevented from being clogged, and a fume collector The pressure loss before and after the passage of 1 can be stabilized and the filter life of the filter 41 can be maintained for a long time. Finally, the clean air that has passed through the filter 41 passes through the duct 7 and is discharged to the outside from the discharge duct 9. Here, in the present invention, as the precoat agent 42, a known one can be used as long as it has an adsorbing property and a deodorizing property and has a particle size of, for example, 1 to 5 μm. The shape of the filter 41 is not particularly limited as long as it has a role as a molding member that captures and attaches the precoat agent 42 to form a coat layer having a predetermined thickness.

上記構成からなるヒューム捕集機１によれば、従来のプリコート機能だけを備えたヒューム捕集機と比較して、長時間運転した場合にも圧力損失が低い状態で安定化する。運転終了後（すなわち、空気吸引装置８の運転停止後）は、球体層に弱い衝撃を与えてやると、球状吸着体３３に吸着されたヒュームが簡単に剥離する。このため、球体収容部３１の下方にヒューム回収部３５を必要に応じて適宜配置すれば、球体収容部３１から直接に、あるいは必要に応じて案内板３４を配置すれば、案内板３４を伝って吸着したヒュームを回収することができる。   According to the fume collector 1 having the above configuration, the pressure loss is stabilized in a state where the pressure loss is low even when operated for a long time as compared with a fume collector having only a conventional precoat function. After the operation is completed (that is, after the operation of the air suction device 8 is stopped), if a weak impact is applied to the spherical layer, the fumes adsorbed on the spherical adsorbent 33 are easily separated. For this reason, if the fume collection part 35 is appropriately disposed below the spherical body accommodating part 31 as necessary, the guide plate 34 is transmitted directly from the spherical body accommodating part 31 or if necessary. The adsorbed fume can be recovered.

また、あらかじめ球体収容部３１の内部に球体層に衝撃を与える衝撃部材（図示せず）を設けておくと、ヒュームの回収時に便宜な他、運転中に適宜の時間間隔で球体層に衝撃を与えることにより、球体層のヒューム吸着能及び圧力損失の安定性を運転初期の状態にして定期的に回復させることができるので、フィルター寿命を維持しつつ、より一層の長時間運転が可能になる。かかる衝撃部材としては、球体層の内部を上下方向、あるいは横方向に作用させて、球状吸着体３３の位置変えを行うことができるものであれば足り、例えば、球体収容部３１に対応するケース部分を貫通して回転軸を接続し、球体収容部３１の内部にある該回転軸の内端部に棒体を縦方向に接続するとともに、該棒体の基端部に直径数ｃｍの球体を取り付け、かつ該球体を球体層の内部に配置してなる棒状位置変え部を構成し、球体収容部３１の外部にある前記回転軸の外端部には上下に回転可能な取っ手（レバー）を接続してなる衝撃部材が好適である。かかる衝撃部材によれば、運転開始後（すなわち、空気吸引装置８の運転開始後）適宜の時間間隔で取っ手を同方向または異方向に回転させれば、上記回転軸の内端部を回転中心として上記棒状位置変え部が振り子のように球体層の内部にある球状吸着体３３の位置を相互に変え、そのとき球体層に衝撃が伝わるので、上述した作用を効果的に発揮することができる。   In addition, if an impact member (not shown) that impacts the sphere layer is provided in advance inside the sphere accommodating portion 31, it is convenient for collecting the fumes, and the sphere layer is impacted at an appropriate time interval during operation. By providing this, the fume adsorption capacity and pressure loss stability of the sphere layer can be periodically restored to the initial operation state, so that it is possible to operate for a longer time while maintaining the filter life. . As such an impact member, any member capable of changing the position of the spherical adsorbent 33 by acting inside the spherical layer in the vertical direction or the horizontal direction is sufficient. For example, a case corresponding to the spherical body containing portion 31 is used. A rotating shaft is connected through the portion, a rod is connected to the inner end of the rotating shaft inside the spherical body accommodating portion 31 in the vertical direction, and a sphere having a diameter of several centimeters at the base end of the rod And a handle (lever) that can be rotated up and down at the outer end of the rotating shaft outside the spherical body accommodating portion 31. An impact member formed by connecting is preferably used. According to such an impact member, if the handle is rotated in the same direction or in a different direction at an appropriate time interval after the operation is started (that is, after the operation of the air suction device 8 is started), the inner end portion of the rotation shaft is the rotation center. As described above, since the rod-like position changing portion changes the position of the spherical adsorbent 33 inside the spherical layer like a pendulum, and the impact is transmitted to the spherical layer at that time, the above-described action can be effectively exhibited. .

以上、本発明の詳細について説明したが、本発明のヒューム捕集機１は、図１に示した実施形態に限定されるものではなく、各種機能部材の大きさ、構造、位置等については、本発明の要旨を逸脱しない範囲内で適宜変更可能である。例えば、図１において、吸引ダクト６は球体収容部３１の天面に直接接続されているが、吸引ダクト６から導入したヒューム含有空気が球体収容部３１の内部を下方へ向けて流通する限り、吸引ダクト６と球体収容部３１は別のダクトを介して連通する構成としてもよい。また、隔壁板５の底部には前処理室３から後処理室４へ吸引空気を通過させるための開口部が形成されているが、該開口部の開口形成位置は隔壁板５の底部（すなわち、隔壁板５の一番下の部分）に限られず、後処理室４に収容されているプリコート剤４２を上方へ舞い上げることができる限り上下の位置関係は問わず、さらにプリコート剤４２が該開口部を直接塞ぐように配置させる必要もない。   Although the details of the present invention have been described above, the fume collector 1 of the present invention is not limited to the embodiment shown in FIG. 1, and the size, structure, position, etc. of various functional members are: Modifications can be made as appropriate without departing from the scope of the present invention. For example, in FIG. 1, the suction duct 6 is directly connected to the top surface of the sphere housing portion 31, but as long as the fume-containing air introduced from the suction duct 6 flows downward in the sphere housing portion 31, The suction duct 6 and the spherical body accommodating part 31 may be configured to communicate with each other via another duct. An opening for allowing suction air to pass from the pre-treatment chamber 3 to the post-treatment chamber 4 is formed at the bottom of the partition plate 5. The opening is formed at the bottom of the partition plate 5 (ie, the bottom of the partition plate 5). The lowermost part of the partition plate 5), as long as the precoat agent 42 accommodated in the post-processing chamber 4 can be raised upward, the pre-coating agent 42 is not limited to the above and below. There is no need to arrange the openings directly.

以下に、実施例および比較例を挙げてさらに説明するが、本発明はこれらの実施例により何ら限定されるものではない。   Hereinafter, the present invention will be further described with reference to examples and comparative examples, but the present invention is not limited to these examples.

（実施例１）
高さ５０ｃｍ、横５０ｃｍ、奥行き４０ｃｍのケースサイズで、図１に示したものと同一の構成に係るヒューム捕集機を用いた。ポリスチレンを構成材料として単独気泡を形成させた、粒径３〜６ｍｍの球状吸着体を球体収容部の下部１／３程度充填し、後処理室にプリコート剤として平均粒径２μｍの粉末ゼオライトをコート層の厚みがほぼ１．０ｍｍになる程度の量を収容した。また、フィルターとしてヒダ折間隔を５ｍｍとしたフィルター面積２ｍ２ものを用いた。室内にて合板材をレーザーでカットしてヒュームを発生させ、次いで空気吸引装置（ブロアー）の吸い込み風量を２ｍ３／ｍｉｎとして、上記ヒュームを含有する吸引空気を吸引ダクトを介して球体収容部に導入し、上記吸引空気の球体層の通過速度を０．６８ｍ／ｓ、隔壁板の底部に設けた開口部の通過速度を１６〜２０ｍ／ｓの条件で３時間運転して、フィルター前後の圧力変動を計測した。３時間経過後空気吸引装置の運転を停止して球体層に外部から衝撃を与えて吸着したヒュームを剥離し、再度上記と同一条件で運転を行い、かかる繰り返し運転を合計４回行った。結果を図２に示す。 Example 1
A fume collector having the same configuration as that shown in FIG. 1 was used with a case size of 50 cm in height, 50 cm in width, and 40 cm in depth. A spherical adsorber with a particle size of 3 to 6 mm made of polystyrene as a constituent material is filled with about 1/3 of the lower part of the sphere container, and the post-treatment chamber is coated with powdered zeolite with an average particle size of 2 μm as a precoat agent The amount of the layer was accommodated so that the thickness of the layer was approximately 1.0 mm. A filter having a filter area of 2 m 2 with a fold folding interval of 5 mm was used. The plywood material is cut with a laser in the room to generate fumes, then the suction air volume of the air suction device (blower) is set to 2 m 3 / min, and the suction air containing the fumes is passed through the suction duct to the sphere container The pressure before and after the filter is operated for 3 hours under the condition that the suction air passes through the spherical layer at a rate of 0.68 m / s and the opening provided at the bottom of the partition plate is 16 to 20 m / s. Variation was measured. After the elapse of 3 hours, the operation of the air suction device was stopped, an impact was applied to the spherical layer from the outside to remove the adsorbed fumes, and the operation was performed again under the same conditions as described above, and this repeated operation was performed a total of 4 times. The results are shown in FIG.

（比較例１）
実施例１と同一構成のヒューム捕集機を用い、球体収容部に球状吸着体を収容しないこと以外は実施例１と同一条件で運転した。結果を図２に示す。 (Comparative Example 1)
A fume collector having the same configuration as in Example 1 was used, and operation was performed under the same conditions as in Example 1 except that the spherical adsorbent was not accommodated in the sphere accommodating part. The results are shown in FIG.

（実施例２）
フィルターのヒダ折間隔を１２ｍｍ、吸引空気の発泡層の通過速度を０．５ｍ／ｓにした以外は実施例１と同一条件で２週間連続運転した。圧力損失の経時変化は運転開始から１６時間経過するまで計測した。結果を図３に示す。 (Example 2)
The operation was continued for 2 weeks under the same conditions as in Example 1 except that the filter folding interval was 12 mm and the passing speed of the suction air foam layer was 0.5 m / s. The change over time in the pressure loss was measured until 16 hours passed from the start of operation. The results are shown in FIG.

図２より、実施例１（図中破線で示した）と比較例１（図中実線で示した）の圧力損失の経時変化を比較すると、明らかに実施例１の方が圧力損失の安定性に優れていることが分かる。また、実施例１において圧力損失がやや増加しているのは、プリコート剤がフィルターのヒダに詰まり、この部分のコート層の厚みが増加したからであると推測している。また、図３によれば、圧力損失は１６時間間ほぼ一定であり、フィルターのヒダ折間隔を調整することで、コート層の厚みをフィルター面の全面に均一に形成させることにより圧力損失の安定性がさらに向上することが分かる。なお、運転開始から２週間経過後に圧力損失を測定したところ、図３と同一の値を示した。これにより、実施例２に係るヒューム捕集機によれば、２週間連続運転した場合にも、圧力損失がほとんど増加せず、かかる点で実用性を十分備えたものといえる。   From FIG. 2, it is clear that the pressure loss of Example 1 is more stable than that of Example 1 (indicated by the broken line in the figure) and Comparative Example 1 (indicated by the solid line in the figure) over time. It turns out that it is excellent in. Further, it is presumed that the pressure loss slightly increased in Example 1 because the precoat agent was clogged with filter folds and the thickness of the coating layer in this portion increased. Further, according to FIG. 3, the pressure loss is almost constant for 16 hours, and the pressure loss is stabilized by uniformly forming the thickness of the coat layer over the entire filter surface by adjusting the filter folding interval. It can be seen that the performance is further improved. In addition, when the pressure loss was measured after two weeks from the start of operation, the same value as in FIG. 3 was shown. Thereby, according to the fume collector concerning Example 2, even if it is operated continuously for two weeks, the pressure loss hardly increases, and it can be said that the practicality is sufficiently provided in this respect.

さらに、実施例１及び実施例２の運転終了後にヒューム捕集機の外部から少し衝撃を与えて吸着したヒュームを回収したところ、ヒューム回収部にはヒュームが大量に収容されていたが、後処理部には目視でわずかに確認できる程度のヒュームしか存在しなかった。このことより、実施例１及び実施例２にかかるヒューム捕集機によれば、吸引空気中に含まれるヒュームは、大部分が前処理室にて捕集されることが分かる。   Further, after the operation of Example 1 and Example 2 was completed, when a little impact was applied from the outside of the fume collector and the adsorbed fume was collected, a large amount of fume was stored in the fume collection unit. In the area, there was only a fume that could be slightly confirmed visually. From this, according to the fume collector according to Example 1 and Example 2, it can be seen that most of the fume contained in the suction air is collected in the pretreatment chamber.

本発明のヒューム捕集機の内部構造の一例を示す一部断面正面図である。It is a partial cross section front view which shows an example of the internal structure of the fume collector of this invention. 実施例１と比較例１の運転条件で圧力損失の経時変化を示した図である。It is the figure which showed the time-dependent change of the pressure loss on the operating conditions of Example 1 and Comparative Example 1. 実施例２の運転条件で圧力損失の経時変化を示した図である。It is the figure which showed the time-dependent change of the pressure loss on the driving | running conditions of Example 2. FIG.

符号の説明Explanation of symbols

１ ヒューム捕集機
２ ケース
３ 前処理室
３１ 球体収容部
３２ 空気流通板
３３ 球状吸着体
３４ 案内板
３５ ヒューム回収部
４ 後処理室
４１ フィルター
４２ プリコート剤
５ 隔壁板
６ 吸引ダクト
７ ダクト
８ 空気吸引装置
８１ モータ
９ 排出ダクト DESCRIPTION OF SYMBOLS 1 Fume collector 2 Case 3 Pre-processing chamber 31 Spherical container part 32 Air distribution plate 33 Spherical adsorber 34 Guide plate 35 Fume collection part 4 Post-processing chamber 41 Filter 42 Precoat agent 5 Partition plate 6 Suction duct 7 Duct 8 Air suction Equipment 81 Motor 9 Discharge duct

Claims (3)

前処理室と、該前処理室の下流側に配置した後処理室と、該後処理室の下流側に配置した空気吸引装置とを備えたヒューム捕集機であって、
前記前処理室は、前記空気吸引装置による吸引作用により外部からヒューム含有空気を導入する吸引ダクトと、上部にヘッドスペースを有し、かつ前記吸引したヒューム含有空気が下方へ向けて通過する、樹脂製発泡体または活性炭からなる球状吸着体を充填した球体層が配置された球体収容部とを有し、
前記後処理室は、該後処理室の下部に配置され、前記球体収容部を通過した吸引空気の上方への作用力を受けるプリコート剤と、該プリコート剤の上方に配置され、上方へ舞い上げられた前記プリコート剤が付着することでコート層を形成させるフィルターとを有することを特徴とするヒューム捕集機。 A fume collector comprising a pretreatment chamber, a posttreatment chamber disposed downstream of the pretreatment chamber, and an air suction device disposed downstream of the posttreatment chamber,
The pretreatment chamber has a suction duct for introducing the fumes laden air from the outside by the suction action of the air suction device has a headspace at the top, and fume-containing air which has the suction passes downward, the resin A spherical body containing a spherical layer filled with a spherical adsorbent made of foam or activated carbon , and
The post-treatment chamber is disposed at a lower portion of the post-treatment chamber, and receives a precoating agent that receives an upward force of suction air that has passed through the spherical body storage portion, and is disposed above the pre-coating agent and soars upward. And a filter for forming a coat layer by adhering the prepared precoat agent to the fume collector. 球状吸着体の粒径が２〜６ｍｍであることを特徴とする請求項１に記載のヒューム捕集機。   The fume collector according to claim 1, wherein the spherical adsorbent has a particle size of 2 to 6 mm. 球状吸着体がポリエチレン、ポリプロピレンまたはポリスチレンから選ばれる汎用樹脂を構成材料とする樹脂製発泡体からなることを特徴とする請求項１または請求項２に記載のヒューム捕集機。   The fume collector according to claim 1 or 2, wherein the spherical adsorbent comprises a resin foam having a general-purpose resin selected from polyethylene, polypropylene or polystyrene as a constituent material.
JP2003397282A 2003-11-27 2003-11-27 Fume collector Expired - Lifetime JP4246609B2 (en)

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