JP4753898B2 - Equipment for separating and removing metal dust in machine oil - Google Patents

Equipment for separating and removing metal dust in machine oil Download PDF

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JP4753898B2
JP4753898B2 JP2007049452A JP2007049452A JP4753898B2 JP 4753898 B2 JP4753898 B2 JP 4753898B2 JP 2007049452 A JP2007049452 A JP 2007049452A JP 2007049452 A JP2007049452 A JP 2007049452A JP 4753898 B2 JP4753898 B2 JP 4753898B2
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metal dust
machine oil
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separation chamber
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秀一 渡辺
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東南精機株式会社
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本発明は、金属加工機、工作機等にて使用される切削油等の機械油を循環させ、該機械油中の金属粉などのダストを分離する装置に関するものである。   The present invention relates to an apparatus for circulating machine oil such as cutting oil used in metal working machines, machine tools, etc., and separating dust such as metal powder in the machine oil.

フライス盤等の工作機、放電加工機等の金属加工機等にて使用される切削油等の機械油は、一般にポンプによって紙フィルターに循環させ、該機械油中に混在する金属粉などのダストを捕集するようにしている。しかし、このようなフィルターによる濾過は、短期間で目詰まりを起こすので、その管理、交換等のメンテナンスに労力を要するものであった。また、紙フィルターが使い捨てであるので、処理のためのコストを要し、環境にも良くない状況であった。   Machine oil such as cutting oil used in machine tools such as milling machines and metal working machines such as electric discharge machines is generally circulated through a paper filter by a pump, and dust such as metal powder mixed in the machine oil is circulated. I try to collect it. However, since filtration using such a filter causes clogging in a short period of time, it requires labor for maintenance such as management and replacement. Moreover, since the paper filter is disposable, the cost for processing is required and the environment is not good.

下記特許文献１，２には、従来のサイクロン型固液分離装置の構成が記載されている。
特開昭４７−２９１号公報 特開昭５４−２１６６９号公報 The following Patent Documents 1 and 2 describe the configuration of a conventional cyclone type solid-liquid separation device.
JP 47-291 A JP-A-54-21669

ところで、特許文献１，２に示されたような従来のサイクロン型分離装置を、機械油中に混在する金属粉などのダストを分離・捕集するのに使用することにより、従来のように紙フィルターを要さず、メンテナンスも容易になるといった利点があるものの、従来のサイクロン型分離装置では、円筒形の分離室内にその接線方向から吹き込んだ機械油が該分離室内にて乱流を発生させ、該機械油の旋回速度が急に遅くなることから、十分な遠心分離作用が得られず、微細な金属ダストまで分離・除去することができないおそれがあった。
本発明はこのような従来の問題点を解消しようとするものである。 By the way, the conventional cyclone type separation device as shown in Patent Documents 1 and 2 is used to separate and collect dust such as metal powder mixed in machine oil. Although there is an advantage that a filter is not required and maintenance is easy, in the conventional cyclonic separator, the machine oil blown from the tangential direction into the cylindrical separation chamber generates turbulent flow in the separation chamber. Since the turning speed of the machine oil suddenly decreases, there is a possibility that sufficient centrifugal separation action cannot be obtained and even fine metal dust cannot be separated and removed.
The present invention is intended to solve such conventional problems.

そのために本発明に係る機械油中の金属ダスト分離除去装置は、円筒状部位と漏斗状部位とを上下部に形成してなるサイクロン分離室を形成し、該分離室の天井面中心から該円筒状部位に垂下し下端が該円筒状部位にて開口する円筒状の流出管部を形成し、該分離室の下方には金属ダスト収容部を設け、前記円筒状部位の上部内周面にその接線方向に向かって開口する略直角三角形状の吹出口を該直角三角形の直交２辺がそれぞれ該円筒状部位の天井面と内周面とに平行に沿うように開設し、金属ダストを含んだ機械油を該吹出口から該円筒状部位に高速で吹き出させるようにしたことを特徴とする。   Therefore, the apparatus for separating and removing metal dust in machine oil according to the present invention forms a cyclone separation chamber in which a cylindrical portion and a funnel-like portion are formed in the upper and lower portions, and the cylinder is formed from the center of the ceiling surface of the separation chamber. A cylindrical outflow pipe part that hangs down on the cylindrical part and opens at the cylindrical part at the lower end is provided, and a metal dust container is provided below the separation chamber. A substantially right-angled triangular air outlet that opens toward the tangential direction was opened so that two orthogonal sides of the right-angled triangle were parallel to the ceiling surface and the inner peripheral surface of the cylindrical portion, respectively, and contained metal dust. The machine oil is blown out from the outlet to the cylindrical portion at a high speed.

サイクロン分離室に吹き込まれた機械油の旋回速度が該分離室にて高速に維持されることで、機械油に含まれた微細な金属ダストまで確実に分離・除去することができる。このため、工作機械のメンテナンスを容易にする。   By maintaining the swirling speed of the machine oil blown into the cyclone separation chamber at a high speed in the separation chamber, even fine metal dust contained in the machine oil can be reliably separated and removed. This facilitates maintenance of the machine tool.

次に請求項１に記載の発明の実施の形態を図面に従い説明する。図１は本発明に係る金属ダスト分離除去装置の縦断面図、図２はそのＡ−Ａ線断面図、図３は図２のＢ−Ｂ線断面図である。円柱体１内に形成されたサイクロン分離室２は上方に円筒状部位２ａを形成し、該円筒状部位の下部に下方に向けてその内径を漸次小さくした漏斗状部位２ｂを形成してなるもので、該漏斗状部位２ｂの下部にはさらに一旦内径を拡大させてから下方に向けて内径を漸次小さくした第２の漏斗状部位２ｃが形成されている。３は分離室２の天井面中心に該円筒状部位２ａに垂下するよう形成された円筒状の流出管部で、該流出管部は上端開口が該円柱体１上に突設された接続管部４と連通し、該流出管部３の下端３ａは該分離室２にて下向きに開口している。また、５は該円柱体１の下端部に着脱自在に螺着された容器からなる金属ダスト回収部である。   Next, an embodiment of the invention described in claim 1 will be described with reference to the drawings. 1 is a longitudinal sectional view of a metal dust separating and removing apparatus according to the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is a sectional view taken along line BB of FIG. The cyclone separation chamber 2 formed in the cylindrical body 1 is formed with a cylindrical portion 2a on the upper side, and a funnel-like portion 2b having an inner diameter gradually reduced downward at the lower portion of the cylindrical portion. Thus, a second funnel-shaped portion 2c is formed in the lower portion of the funnel-shaped portion 2b. The second funnel-shaped portion 2c is further enlarged once and then the inner diameter is gradually reduced downward. Reference numeral 3 denotes a cylindrical outflow pipe portion formed so as to hang from the cylindrical portion 2a at the center of the ceiling surface of the separation chamber 2, and the outflow pipe portion is a connecting pipe having an upper end opening projecting from the cylindrical body 1 The lower end 3 a of the outflow pipe portion 3 communicates with the portion 4 and opens downward in the separation chamber 2. Reference numeral 5 denotes a metal dust collecting portion comprising a container that is detachably screwed to the lower end portion of the cylindrical body 1.

６は円筒状部位２ａの上部内周面にその接線方向に向かって開口する略直角三角形状の吹出口で、該吹出口はその直角三角形の直交する２つの辺６ａと６ｂがそれぞれ該円筒状部位２ａの天井面と内周面とに平行に沿うように開設されている。なお、該吹出口６の上端部の幅ｗ＝６ｍｍ、長さ（高さ）ｈ＝１９ｍｍに形成され、その直角三角形の３つの角部は円弧状の角丸に形成される。また、図３に示されたように吹出口６の上端部の内周寄り角と流出管部３の外周面との間に隙間６ｃが設けられ、該吹出口６から吹き出す機械油が流出管部３の外周面に対し直に衝突しないようにし衝突による乱流の発生が防がれるようにしている。そして該吹出口６は円柱体１の上部外周に突設された接続管７と連通される。   Reference numeral 6 denotes a substantially right-angled triangular air outlet that opens in the tangential direction on the upper inner circumferential surface of the cylindrical portion 2a. The air outlet has two orthogonal sides 6a and 6b of the right-angled triangle, respectively. It is established so as to be parallel to the ceiling surface and the inner peripheral surface of the part 2a. The upper end of the air outlet 6 is formed with a width w = 6 mm and a length (height) h = 19 mm, and three corners of the right triangle are formed into arc-shaped rounded corners. Further, as shown in FIG. 3, a gap 6 c is provided between the inner peripheral angle of the upper end portion of the outlet 6 and the outer peripheral surface of the outflow pipe portion 3, and the machine oil blown out from the outlet 6 is discharged from the outflow pipe. The collision with the outer peripheral surface of the part 3 is prevented so that the generation of turbulent flow due to the collision is prevented. The air outlet 6 communicates with a connecting pipe 7 projecting from the upper outer periphery of the cylindrical body 1.

この装置では、図４に示すように、ポンプ８によって金属ダストを含む切削油等の機械油を工作機９から吸引し、該機械油を上記接続管７に圧送し、吹出口６からサイクロン分離室２の円筒状部位２ａに高速で吹き出させる。吹出口６から吹き出た機械油は、図２に矢印で示したように円筒状部位２ａ内を旋回する。この旋回時に機械油中の金属ダストは遠心力によって次第に該分離室２の外周部に移動すると共に重力によって下方に沈降し金属ダスト回収部５に溜まる。このため、金属ダストを含まない機械油が該分離室２の中心にて下向きに開口している流出管部３に流入し接続管部４に流出する。そして接続管部４より流出した機械油は工作機９に循環し再使用される。なお、１０は接続管部４と工作機９との間に設けられた補助フィルターである。また、１１は金属ダスト回収部５に溜まった金属ダストを示す。   In this apparatus, as shown in FIG. 4, a machine oil such as a cutting oil containing metal dust is sucked from a machine tool 9 by a pump 8, the machine oil is pumped to the connection pipe 7, and a cyclone is separated from an outlet 6. The cylindrical part 2a of the chamber 2 is blown out at high speed. The machine oil blown out from the blowout port 6 swirls in the cylindrical portion 2a as shown by an arrow in FIG. During this turning, the metal dust in the machine oil gradually moves to the outer peripheral portion of the separation chamber 2 by centrifugal force, and sinks downward by gravity and accumulates in the metal dust collecting portion 5. For this reason, machine oil that does not contain metal dust flows into the outflow pipe portion 3 that opens downward at the center of the separation chamber 2 and flows out into the connection pipe portion 4. Then, the machine oil that has flowed out of the connecting pipe portion 4 is circulated to the machine tool 9 and reused. Reference numeral 10 denotes an auxiliary filter provided between the connecting pipe portion 4 and the machine tool 9. Reference numeral 11 denotes metal dust collected in the metal dust collecting unit 5.

この金属ダスト分離除去装置は、略直角三角形状の吹出口６が円筒状部位２ａの上部内周面にその接線方向に向かって開口するよう形成され、かつ、その直角三角形の直交する２つの辺６ａと６ｂがそれぞれ該円筒状部位２ａの天井面と内周面とに平行に沿うように開設されている。このため金属ダストを含んだ機械油が該吹出口６から円筒状部位２ａの外周寄りからより多く吹き出され、外周寄りの流速が内周寄りの流速よりも速くなり、角速度をほぼ同じくすることができることから、吹出口６から吹き出た機械油は層流状態が維持されて円筒状部位２ａ内を旋回し得る。また、略直角三角形状の吹出口６は開口幅が下方に行くに従って次第に狭くなるので、円筒状部位２ａの天井面付近にてより多くの機械油が吹き出され、そのため下方に行くに従い機械油の旋回速度を徐々に遅くすることができる。このため、円筒状部位２ａにて乱流が発生し難くなり、乱流によって円筒状部位２ａにおける機械油の旋回速度が急に下がるようなことがなく、極めて高い遠心分離能力を維持することができる。   This metal dust separation / removal device is formed so that a substantially right-angled triangular outlet 6 is formed so as to open toward the tangential direction on the upper inner peripheral surface of the cylindrical portion 2a, and two orthogonal sides of the right-angled triangle are formed. 6a and 6b are established so as to be parallel to the ceiling surface and the inner peripheral surface of the cylindrical portion 2a, respectively. For this reason, more machine oil containing metal dust is blown out from the blower outlet 6 near the outer periphery of the cylindrical portion 2a, the flow velocity near the outer periphery becomes faster than the flow velocity near the inner periphery, and the angular velocities are almost the same. As a result, the machine oil blown from the outlet 6 can be swirled in the cylindrical portion 2a while maintaining a laminar flow state. Further, since the opening 6 of the substantially right-angled triangle gradually becomes narrower as the opening width goes downward, more machine oil is blown out in the vicinity of the ceiling surface of the cylindrical portion 2a. The turning speed can be gradually reduced. For this reason, it is difficult for turbulent flow to occur in the cylindrical portion 2a, and the rotational speed of the machine oil in the cylindrical portion 2a is not suddenly lowered by the turbulent flow, and extremely high centrifugal capacity can be maintained. it can.

なお、この実施形態では、第２の漏斗状部位２ｃを形成したことにより、機械油中の微細金属ダストをさらに確実に沈降・分離させることができるが、漏斗状部位２ｃを形成することなく第１の漏斗状部位２ｂだけ形成したものであっても十分な分離能力が得られる。   In this embodiment, by forming the second funnel-shaped portion 2c, fine metal dust in the machine oil can be more reliably settled and separated, but the second funnel-shaped portion 2c is formed without forming the funnel-shaped portion 2c. Even if only one funnel-shaped part 2b is formed, a sufficient separation ability can be obtained.

一方、図５に示した金属ダスト分離除去装置は、吹出口６の開口幅を下方に行くに従って次第に狭くした略逆三角形状に形成している。その他の構成は上記実施形態と同様である。このためこの実施形態の場合も円筒状部位２ａの天井面付近にてより多くの機械油が吹き出され、下方に行くに従い機械油の旋回速度が徐々に遅くなることで、円筒状部位２ａにて乱流が発生し難くなり、高速にて金属ダストを外周に遠心分離する作用と、その金属ダストを重力により沈降させる作用とが相俟って、高い分離能力が得られ、機械油に含まれた微細な金属ダストまで確実に分離・除去することができる。 On the other hand, the metal dust separation / removal device shown in FIG. 5 is formed in a substantially inverted triangular shape in which the opening width of the air outlet 6 is gradually narrowed downward. Other configurations are the same as those in the above embodiment. For this reason, also in this embodiment, more machine oil is blown out near the ceiling surface of the cylindrical part 2a, and the turning speed of the machine oil gradually decreases as it goes downward, so that the cylindrical part 2a The turbulent flow is less likely to occur, and the action of centrifuging metal dust to the outer periphery at high speed and the action of sedimenting the metal dust by gravity combine to provide a high separation capability, which is contained in machine oil. Even fine metal dust can be reliably separated and removed.

このため、本発明の金属ダスト分離除去装置によれば、格別に紙フィルターを使用しないでもよくなり、機械油を使用する種々の金属加工機、工作機のメンテナンスを容易にするなど、有益である。   For this reason, according to the metal dust separation / removal device of the present invention, it is not necessary to use a paper filter, and it is beneficial to facilitate maintenance of various metal processing machines and machine tools using machine oil. .

本発明の実施形態を示す金属ダスト分離除去装置の縦断面図。The longitudinal cross-sectional view of the metal dust separation / removal apparatus which shows embodiment of this invention. 図１のＡ−Ａ線断面図。AA sectional view taken on the line AA of FIG. 図２のＢ−Ｂ線断面図。BB sectional drawing of FIG. 本発明の金属ダスト分離除去装置の使用状態を示す配管系統図。The piping system figure which shows the use condition of the metal dust separation removal apparatus of this invention. 本発明の他の実施形態を示す金属ダスト分離除去装置の要部の縦断面図。The longitudinal cross-sectional view of the principal part of the metal dust separation / removal apparatus which shows other embodiment of this invention.

符号の説明Explanation of symbols

２ サイクロン分離室
２ａ 円筒状部位
２ｂ，２ｃ 漏斗状部位
３ 流出管部
３ａ 流出管部の下端
５ 金属ダスト回収部
６ 吹出口
６ａ，６ｂ ２辺
８ ポンプ
９ 工作機
１１ 金属ダスト DESCRIPTION OF SYMBOLS 2 Cyclone separation chamber 2a Cylindrical part 2b, 2c Funnel-shaped part 3 Outflow pipe part 3a Lower end of outflow pipe part 5 Metal dust collection part 6 Outlet 6a, 6b 2 sides 8 Pump 9 Machine tool 11 Metal dust

Claims (1)

円筒状部位と漏斗状部位とを上下部に形成してなるサイクロン分離室を形成し、該分離室の天井面中心から該円筒状部位に垂下し下端が該円筒状部位にて開口する円筒状の流出管部を形成し、該分離室の下方には金属ダスト収容部を設け、前記円筒状部位の上部内周面にその接線方向に向かって開口する略直角三角形状の吹出口を該直角三角形の直交２辺がそれぞれ該円筒状部位の天井面と内周面とに平行に沿うように開設し、金属ダストを含んだ機械油を該吹出口から該円筒状部位に高速で吹き出させるようにしたことを特徴とする機械油中の金属ダスト分離除去装置。   Cylindrical separation chamber formed by forming a cylindrical portion and a funnel-shaped portion in the upper and lower portions, a cylindrical shape that hangs down from the center of the ceiling surface of the separation chamber to the cylindrical portion and opens at the cylindrical portion A metal dust container is provided below the separation chamber, and a substantially right-angled triangular outlet that opens in the tangential direction on the upper inner peripheral surface of the cylindrical portion is formed at the right angle. Two orthogonal sides of the triangle are opened so as to be parallel to the ceiling surface and the inner peripheral surface of the cylindrical part, respectively, so that machine oil containing metal dust is blown from the outlet to the cylindrical part at high speed. An apparatus for separating and removing metal dust in machine oil, characterized in that
JP2007049452A 2007-02-28 2007-02-28 Equipment for separating and removing metal dust in machine oil Active JP4753898B2 (en)

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