JPH0652915U - Overflow type solid-liquid separation device - Google Patents
Overflow type solid-liquid separation deviceInfo
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- JPH0652915U JPH0652915U JP9270292U JP9270292U JPH0652915U JP H0652915 U JPH0652915 U JP H0652915U JP 9270292 U JP9270292 U JP 9270292U JP 9270292 U JP9270292 U JP 9270292U JP H0652915 U JPH0652915 U JP H0652915U
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- separation tank
- liquid
- spiral conveyor
- filter
- precipitation separation
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Abstract
(57)【要約】
【目的】 液体に含まれている切粉等の懸濁物を、多孔
性フィルターに詰まったりすることなく、液体より連続
的に沈殿分離して除去し、切粉等の懸濁物と濾過液体の
固液分離処理効率を高める。
【構成】 スパイラル状のコンベヤーのスパイラルの巻
き方に応じて、その回転方向を選択し、またスパイラル
状のコンベヤーの回転方向と反対側の沈殿分離槽の側面
直線部分の角度を、スパイラル状のコンベヤーの回転方
向と同じ側の沈殿分離槽の側面直線部分の角度より大き
くするとともに、その沈殿分離槽の上方部および沈殿分
離槽の中央部を閉鎖させ、またスパイラル状のコンベヤ
ーの回転方向と同じ側の沈殿分離槽の開口部を濾過液体
の溢流部とし、この沈殿分離槽の溢流部付近に、スクリ
ーン状のフィルター、パンチングフィルター等の多孔性
フィルターを付設した片溢流式固液分離装置。
(57) [Summary] [Purpose] A suspension of cutting chips contained in a liquid is continuously precipitated and separated from the liquid without being clogged with a porous filter to remove chips, etc. Increase the efficiency of solid-liquid separation treatment of suspension and filtered liquid. [Structure] Depending on how the spiral of the spiral conveyor is wound, the rotation direction is selected, and the angle of the linear part of the side of the precipitation separation tank on the opposite side to the rotation direction of the spiral conveyor is set to the spiral conveyor. On the same side as the direction of rotation of the settling separation tank, and make the upper part of the settling separation tank and the central part of the settling separation tank closed, and on the same side as the rotating direction of the spiral conveyor. Single overflow type solid-liquid separation device in which the opening of the sedimentation separation tank is used as an overflow of the filtered liquid, and a porous filter such as a screen filter or a punching filter is attached near the overflow of the precipitation separation tank. .
Description
【０００１】[0001]
本考案は、例えば高速回転式切削加工機械等より排出する切削切粉等の懸濁物 を含むクーラント廃液等の液体より、切削切粉等の懸濁物を多孔性フィルターで 濾別、沈殿分離させてスパイラル状のコンベヤーで外部に排出するとともに、切 削切粉等の懸濁物を分離除去したクーラント等の濾過液体を多孔性フィルターか ら溢流させて回収、再利用する片溢流式固液分離装置に関するものである。 The present invention, for example, from a liquid such as a coolant waste liquid containing a suspension of cutting chips or the like discharged from a high-speed rotary cutting machine or the like, a suspension of cutting chips or the like is filtered by a porous filter, and sedimentation is separated. It is then discharged to the outside with a spiral conveyor, and the filtered liquid such as coolant that has separated and removed suspended solids such as cutting chips is overflowed from a porous filter to be collected and reused. The present invention relates to a solid-liquid separation device.
【０００２】[0002]
最近の金属等の切削加工機械、特にマシニングセンターの切削加工においては 、切削刃物の回転数を従来の数倍、すなわち数万回転（ｒｐｍ）という高速で回 転させて金属等を切削加工することに注目が集まっているが、この高速回転切削 加工を側面からサポートしている有力な手段として、高圧クーラント法、すなわ ちスピンドルの高速回転に劣らない、約７ＭＰａの高い圧力でクーラントを金属 等の加工点に集中的に噴出することによって、切削刃先や切削金属面を効果的に 冷却するとともに、金属等の切りくずを工具や切削個所に引っ掛かることなく、 強制的に排除する技術が採用されている。 In recent cutting machines for metals, especially for machining centers, it is necessary to rotate the cutting blade several times faster than before, that is, to rotate metal at a high speed of tens of thousands of revolutions (rpm). Attention has been focused on, but as a powerful means that supports this high-speed rotation cutting process from the side, the high pressure coolant method, that is, the high speed rotation of the spindle, which is not inferior to the high-speed rotation of the spindle, can be used to cool the coolant with a high pressure of about 7 MPa. By intensively ejecting at the processing point, the cutting edge and the metal surface of the cutting are effectively cooled, and the technology of forcibly removing the chips of metal etc. without being caught by the tool or cutting point is adopted. There is.
【０００３】 この高圧クーラント法の狙いは、前述した切削刃先や切削金属面の冷却、金属 等の切りくずの強制的排除により工具の寿命を伸ばし、より高速で長時間安定し た精密な切削を効率的に行うことにある。 しかし、数万回転（ｒｐｍ）という高速回転で切削加工をするために、切削切 粉等の懸濁物は、針状のもの、粉状のもの、微粒子状のもの等の微細なもの等が 多く、さらに高圧クーラント法においては、前述したように、高い圧力でクーラ ントを噴射するので、切削切粉等の懸濁物は一段と粉砕、切断されて微粒子化が 促進されるために、スクリーン状のフィルター、パンチングフィルター等の多孔 性フィルターによってクーラント廃液を処理する際に、多孔性フィルターが目詰 まりを起こし易いという問題があった。The purpose of this high-pressure coolant method is to cool the cutting edge and the cutting metal surface described above, and forcibly remove chips such as metal to extend the life of the tool, and achieve precise and stable cutting at a higher speed and for a long time. It is to do it efficiently. However, in order to perform cutting at a high speed of tens of thousands of revolutions (rpm), the suspension of cutting chips, etc., may be needle-like, powder-like, fine particles, etc. In many cases, in the high-pressure coolant method, as described above, the coolant is injected at a high pressure, so the suspension of cutting chips and the like is further crushed and cut, and the atomization is promoted, resulting in a screen form. There is a problem that the porous filter is apt to be clogged when the coolant waste liquid is treated by the porous filter such as the above-mentioned filter or the punching filter.
【０００４】 多孔性フィルターが目詰まりを起こした場合は、その都度、固液分離処理を中 断し、多孔性フィルターを頻繁に洗浄して、目詰まりずまりしたり、ささったり した切粉等の懸濁物を除去しなければならず、固液分離処理効率が悪くなるばか りか、多孔性フィルターの洗浄は、面倒で、時間と手間がかり、ランニングコス トが高くなる欠点もあった。When the porous filter is clogged, the solid-liquid separation treatment is interrupted each time, and the porous filter is frequently washed to remove clogged chips or rubbing chips. In addition to having to remove the suspended solids, the solid-liquid separation treatment efficiency deteriorates, and cleaning the porous filter is troublesome, time-consuming, and has a drawback that running cost becomes high.
【０００５】 特に、断片状のもの、ぜんまい状のもの、渦巻き状のもの等の粒径が大きいも のと、微細なものが雑多に混在する場合は、固液分離が一段と難しくなるという 問題があり、マシニングセンターの切削加工においては、この傾向が強く、あら ゆる種類の切粉等の懸濁物を、クーラント廃液より簡単に、コストを安く分離、 除去し、この切粉等の懸濁物を可能な限り減容化（脱液化）して廃棄することが 緊急の技術課題となっている。In particular, when the particle size is large, such as fragment-shaped, spiral-shaped, spiral-shaped, etc., and when minute particles are mixed together, solid-liquid separation becomes more difficult. In the machining process of machining centers, this tendency is strong, and suspensions of all kinds of chips, etc. can be separated and removed more easily and cheaply than the coolant waste liquid, and the suspensions of chips, etc. can be removed. It is an urgent technical issue to reduce the volume (deliquesce) and discard as much as possible.
【０００６】 また、前述した高圧クーラント法においては、高速で、高圧でクーラントを噴 出させるために、多量のクーラントを使用することになり、この多量のクーラン トを廃棄すると不経済で、かつ廃棄処理に費用がかかるので、この多量のクーラ ントを純度よく、コストを安く、回収、再使用することが、もう一つの緊急の技 術課題となっている。Further, in the above-mentioned high-pressure coolant method, a large amount of coolant is used in order to eject the coolant at high speed and high pressure, and it is uneconomical to dispose of this large amount of coolant, and the waste is discarded. Since the treatment is expensive, it is another urgent technical task to collect and reuse this large amount of coolant with high purity and low cost.
【０００７】[0007]
本考案は、切削切粉等の懸濁物を含んでいる液体、特に高圧クーラント法にお ける微細な切削切粉等の懸濁物を含んでいるクーラント廃液、また微細な切削切 粉等の懸濁物とともに、粒径が大きい切削切粉等の懸濁物とを雑多に混在して含 んでいるクーラント廃液液体より、これらの切削切粉等の懸濁物を、多孔性フィ ルターが目詰まりすることなく、すなわち固液分離処理を中断して多孔性フィル ターを頻繁に洗浄することなく、連続的に分離、除去して固液分離処理効率を高 めることを目的とする。 The present invention is directed to a liquid containing a suspension of cutting chips and the like, particularly a coolant waste liquid containing a suspension of fine cutting chips and the like in the high-pressure coolant method, and a fine cutting chip and the like. From the coolant waste liquid that contains a mixture of suspended particles such as cutting chips with a large particle size together with the suspended particles, the porous filter can see these suspended particles such as cutting chips and other liquids. The purpose of the present invention is to improve the solid-liquid separation treatment efficiency by continuously separating and removing without clogging, that is, without interrupting the solid-liquid separation treatment and frequently washing the porous filter.
【０００８】 また、本考案は、切削切粉等の懸濁物を除去した濾過液体、特に高圧クーラン ト法において使用した多量のクーラントを廃棄することなく、この多量のクーラ ントを純度よく、コストを安く、回収、再使用することを目的とする。In addition, the present invention can purify this large amount of coolant with high purity and cost without discarding the filtered liquid from which suspensions such as cutting chips have been removed, especially the large amount of coolant used in the high pressure coolant method. The purpose is to collect, reuse and cheaply.
【０００９】 さらに、本考案は、切粉等の懸濁物を、固液分離処理を中断して排出すること なく、固液分離処理中に連続的に沈殿分離槽より排出して、効率よく産業廃棄物 として処理することを目的とする。Furthermore, the present invention efficiently discharges suspended particles such as chips from the precipitation separation tank during the solid-liquid separation process without interrupting and discharging the solid-liquid separation process. The purpose is to treat it as industrial waste.
【００１０】[0010]
本考案は、多孔性フィルターを設けた沈殿分離槽に、切粉等の懸濁物を含む液 体を流入させ、濾過液体を多孔性フィルターを介して沈殿分離槽の溢流部分より 流出させるとともに、沈殿分離槽内に沈殿分離した切粉等の懸濁物を、スパイラ ル状のコンベヤーで沈殿分離槽の外部に排出するについて、スパイラル状のコン ベヤーのスパイラルの巻き方に応じて、その回転方向を選択し、またスパイラル 状のコンベヤーの回転方向と反対側の沈殿分離槽の側面直線部分の角度を、スパ イラル状のコンベヤーの回転方向と同じ側の沈殿分離槽の側面直線部分の角度よ り大きくするとともに、その沈殿分離槽の上方部および沈殿分離槽の中央部を閉 鎖させ、またスパイラル状のコンベヤーの回転方向と同じ側の沈殿分離槽の開口 部を濾過液体の溢流部とし、この沈殿分離槽の溢流部付近に、スクリーン状のフ ィルター、パンチングフィルター等の多孔性フィルターを付設した片溢流式固液 分離装置に関するものである。 The present invention allows a liquid containing suspended solids such as chips to flow into a sedimentation separation tank equipped with a porous filter, and allows the filtered liquid to flow out of the overflow portion of the sedimentation separation tank through the porous filter. Regarding the discharge of the suspension of chips and other substances that have settled and separated in the settling / separation tank to the outside of the settling / separation tank by means of a spiral conveyor, rotate the spiral depending on the spiral winding method of the spiral conveyor. Direction, and the angle of the straight side of the settling tank on the side opposite to the rotating direction of the spiral conveyor is set to the angle of the straight side of the settling tank on the same side as the rotating direction of the spiral conveyor. In addition, the upper part of the precipitation separation tank and the central part of the precipitation separation tank are closed, and the opening of the precipitation separation tank on the same side as the rotating direction of the spiral conveyor is filled with the filtered liquid. And the flow section, near the overflow of the sedimentation separation tank, a screen-like off Iruta relates migraine overflow type solid-liquid separator the porous filter was attached such punching filter.
【００１１】 また、本考案は、前述した片溢流式固液分離装置のスパイラル状のコンベヤー の回転方向と反対側の沈殿分離槽の側面直線部分の角度を９０〜１３５度とし、 スパイラル状のコンベヤーの回転方向と同じ側の沈殿分離槽の側面直線部分の角 度を１０〜４０度とするものである。In addition, according to the present invention, the angle of the linear portion of the side surface of the sedimentation separation tank on the side opposite to the rotating direction of the spiral conveyor of the above-mentioned overflow type solid-liquid separation device is set to 90 to 135 degrees, and the spiral shape is formed. The angle of the straight part on the side of the precipitation separation tank on the same side as the rotating direction of the conveyor is 10 to 40 degrees.
【００１２】 さらに、本考案は、前述した片溢流式固液分離装置の沈殿分離槽の溢流部付近 に設けた多孔性フィルターの上方に、逆洗液ノズル等の洗浄手段を付設してもよ い。 また、本考案においては、前述した片溢流式固液分離装置のスパイラル状のコ ンベヤーの上部を、切削切粉等の懸濁物を含む液体の液面より露出させてもかま わない。Further, in the present invention, a washing means such as a backwashing liquid nozzle is attached above the porous filter provided in the vicinity of the overflow portion of the sedimentation separation tank of the above-mentioned single overflow type solid-liquid separation device. Good. Further, in the present invention, the upper portion of the spiral conveyor of the above-mentioned overflow type solid-liquid separation device may be exposed from the liquid surface of the liquid containing the suspension such as cutting chips.
【００１３】[0013]
前述したように構成した片溢流式固液分離装置の沈殿分離槽内に、切粉等の懸 濁物を含む液体、特に高速回転切削加工法、高圧クーラント法において発生した 微細な切削切粉等の懸濁物、その他の切削切粉等の懸濁物を含むクーラント廃液 を流入させても、大部分の切削切粉等の懸濁物を、スパイラル状のコンベヤーに よって、その回転方向に押し付けながら、かつスパイラル状のコンベヤーの回転 方向と同じ側の、沈殿分離槽の密閉された部分内に保持してスパイラル状のコン ベヤーで沈殿分離槽外に連続的に排出する。 In the sedimentation separation tank of the overflow overflow solid-liquid separation device configured as described above, a liquid containing suspended particles such as chips, especially fine cutting chips generated in the high-speed rotary cutting method and high-pressure coolant method. Even if a coolant waste fluid containing suspensions such as cutting chips and other suspensions such as cutting chips is flowed in, most of the suspensions of cutting chips are rotated in the direction of rotation by a spiral conveyor. While pressing, it is held in the closed part of the sedimentation tank on the same side as the direction of rotation of the spiral conveyor and continuously discharged out of the sedimentation tank by the spiral conveyor.
【００１４】 また、スパイラル状のコンベヤーの回転方向と反対側の沈殿分離槽の開口部で ある濾過液体の溢流部の面積を大きくして、この溢流部付近に取り付けた多孔性 フィルターの濾過面積を大きくするとともに、多孔性フィルターの通液流速を遅 くさせて、スパイラル状のコンベヤーで排出されない少量の切削切粉等の懸濁物 を、多孔性フィルターの目詰まりずまりを防止して、切粉等の懸濁物に対する濾 過処理能力を増大させて、濾過液体であるクーラントを回収する。Further, the area of the overflow portion of the filtered liquid, which is the opening of the precipitation separation tank on the side opposite to the rotating direction of the spiral conveyor, is increased, and the filtration of the porous filter attached near this overflow portion is performed. In addition to increasing the area, slow the flow rate of liquid through the porous filter to prevent the small amount of suspended particles such as cutting chips that are not discharged by the spiral conveyor from clogging the porous filter. Increase the filtration capacity for suspensions of chips, chips, etc., and recover the coolant that is the filtered liquid.
【００１５】[0015]
本考案を、高圧クーラント法を採用した高速回転切削加工機より排出する微細 な切削切粉等の懸濁物を含むクーラント廃液を例として、図１に従って説明する と、１は切削切粉等の懸濁物を含む液体を流入させる、断面がＵ字状の沈殿分離 槽であって、その沈殿分離槽１の底面２に近接してスパイラル状のコンベヤー３ を回転可能に設けるが、その際、スパイラル状のコンベヤー３のスパイラルの巻 き方に応じて、スパイラル状のコンベヤー３の回転方向を選択する。 The present invention will be described with reference to FIG. 1 by taking a coolant waste liquid containing a suspension of fine cutting chips discharged from a high-speed rotary cutting machine adopting a high-pressure coolant method as an example. A sedimentation separation tank having a U-shaped cross section, into which a liquid containing a suspension is introduced, is provided in the vicinity of the bottom surface 2 of the precipitation separation tank 1 and a spiral conveyor 3 is rotatably provided. The rotation direction of the spiral conveyor 3 is selected according to the spiral winding method of the spiral conveyor 3.
【００１６】 例えば、図１の場合は、スパイラル状のコンベヤー３のスパイラルの巻き方が 左巻であるので、スパイラル状のコンベヤー３の回転方向を右回転（時計回転） とする。 反対に、図示してないが、スパイラル状のコンベヤー３のスパイラルの巻き方 が右巻であれば、スパイラル状のコンベヤー３の回転方向を左回転（反時計回転 ）とする。For example, in the case of FIG. 1, since the spiral winding of the spiral conveyor 3 is left-handed, the spiral conveyor 3 is rotated clockwise (clockwise). On the other hand, although not shown, if the spiral winding of the spiral conveyor 3 is right-handed, the spiral conveyor 3 is rotated counterclockwise.
【００１７】 そして、回転を選択したスパイラル状のコンベヤー３の回転方向と反対側の沈 殿分離槽１の側面直線部分の角度を、スパイラル状のコンベヤー３の回転方向と 同じ側の沈殿分離槽の側面直線部分の角度より大きくする。Then, the angle of the linear portion of the side surface of the sediment separation tank 1 on the side opposite to the rotation direction of the spiral conveyor 3 whose rotation is selected is the same as that of the sediment separation tank on the same side as the rotation direction of the spiral conveyor 3. It should be larger than the angle of the straight part on the side.
【００１８】 例えば、図１に示したように、スパイラル状のコンベヤー３の回転方向が右回 転（時計回転）である場合は、反対側である左側の沈殿分離槽１の側面直線部分 の角度を、例えば１００度（水平線より）とし、またスパイラル状のコンベヤー ３の回転方向と同じ側である右側の沈殿分離槽１の側面直線部分の角度を、例え ば２０度（水平線より）とする。For example, as shown in FIG. 1, when the spiral conveyor 3 is rotated clockwise (clockwise), the angle of the straight side surface of the left side sedimentation separation tank 1 on the opposite side Is, for example, 100 degrees (from the horizontal line), and the angle of the straight line side surface of the right side precipitation separation tank 1 on the same side as the rotating direction of the spiral conveyor 3 is, for example, 20 degrees (from the horizontal line).
【００１９】 反対に、図示してないが、スパイラル状のコンベヤー３の回転方向が左回転（ 反時計回転）である場合には、前述の沈殿分離槽１の側面直線部分の角度は逆に なる。On the other hand, although not shown, when the spiral conveyor 3 is rotated counterclockwise (counterclockwise), the angle of the linear portion of the side surface of the sedimentation separation tank 1 is reversed. .
【００２０】 スパイラル状のコンベヤー３の回転方向が右回転の場合、反対側の左側の沈殿 分離槽１の側面直線部分の角度を、９０〜１３５度、望ましくは１００〜１２０ 度と、開口度を小さくして、その左側の沈殿分離槽１の上部開口を蓋４で密閉す るとともに、沈殿分離槽１の中央部も蓋４で密閉し、さらに同じ側である右側の 沈殿分離槽１の側面直線部分の角度を、１０〜４０度、望ましくは２０〜３０度 と、開口度を大きくしてし、その右側の沈殿分離槽１の上部を溢流部５として、 この溢流部５の全面に、スクリーン状フィルター、パンチングフィルター等の多 孔性フィルター６を設ける。When the spiral conveyor 3 is rotated to the right, the angle of the linear portion of the side surface of the sedimentation separation tank 1 on the opposite side is 90 to 135 degrees, preferably 100 to 120 degrees, and the opening degree is It is made smaller, and the upper opening of the precipitation separation tank 1 on the left side is closed with a lid 4, the central part of the precipitation separation tank 1 is also closed with a lid 4, and the side surface of the right side precipitation separation tank 1 on the same side. The angle of the straight line portion is increased to 10 to 40 degrees, preferably 20 to 30 degrees, and the opening degree is increased. The upper part of the precipitation separation tank 1 on the right side is defined as the overflow portion 5, and the entire surface of the overflow portion 5 Further, a multi-pore filter 6 such as a screen filter or a punching filter is provided.
【００２１】 スパイラル状のコンベヤー３は、図２に示すように、沈殿分離槽１のＵ字状の 底部２沈殿した切粉等の懸濁物を排出するもので、例えばサブゼロ硬化処理をし たステンレス鋼線等の金属線を螺旋状、すなわちコイルスプリング状に巻いたも ので、スパイラル状のコンベヤー３の下部周面が、断面がＵ字状の沈殿分離槽１ 内の底面に近接して回転するように取り付け、またスパイラル状のコンベヤー３ の一端にモーター等の駆動手段（図示せず）と連結する。As shown in FIG. 2, the spiral conveyor 3 is for discharging a U-shaped bottom portion 2 of the sedimentation separation tank 1 and a suspension of precipitated chips and the like. Since a metal wire such as a stainless steel wire is wound in a spiral shape, that is, a coil spring shape, the lower peripheral surface of the spiral conveyor 3 rotates close to the bottom surface of the sedimentation separation tank 1 having a U-shaped cross section. The spiral conveyor 3 is connected to one end of the spiral conveyor 3 with a driving means (not shown) such as a motor.
【００２２】 スパイラル状のコンベヤー３の直径は、沈殿分離槽１のＵ字状の底部２の直径 より若干小さくするが、コンベヤー３の直径と長さは、クーラント廃液の種類、 切粉等の懸濁物の種類や濃度、固液分離目的、分離精度等の処理条件に応じて適 宜決定するが、通常の場合は、コンベヤー３の直径としては１０〜５０ｃｍ、長 さとして３０〜５００ｃｍの範囲のものを用いるとよく、またスパイラル状のコ ンベヤー３の回転数は１０〜１５０ｒｐｍ程度でよい。The diameter of the spiral conveyor 3 is made slightly smaller than the diameter of the U-shaped bottom portion 2 of the settling separation tank 1, but the diameter and length of the conveyor 3 depend on the type of coolant waste liquid, the suspension of cutting chips, etc. Depending on the processing conditions such as the type and concentration of suspended matter, the purpose of solid-liquid separation, the separation accuracy, etc., usually, the diameter of the conveyor 3 is in the range of 10 to 50 cm and the length is in the range of 30 to 500 cm. The spiral conveyor 3 may have a rotational speed of about 10 to 150 rpm.
【００２３】 多孔性フィルター５は、クーラント廃液中に少量残存する切粉等の懸濁物を濾 過するもので、その材質は、前述したように、例えばサブゼロ硬化処理をしたス テンレス鋼製のスクリーン状フィルターまたはパンチングフィルター等のものが 好ましく、この多孔性フィルター６の目開きは、例えば２０〜１５０メッシュの ものを用いるとよい日。 目開きが２０メッシュより大きいと、切粉等の懸濁物が目詰まりし易くなるの で不適当であり、またが１５０メッシュより小さいと、濾過液体がフィルター３ を通液する際の圧力損失が高くなり、固液分離処理効率が悪化するために不適当 である。The porous filter 5 is for filtering a suspension of cutting chips and the like remaining in a small amount in the coolant waste liquid, and the material thereof is, for example, as described above, made of stainless steel that has been subjected to sub-zero hardening treatment. A filter such as a screen filter or a punching filter is preferable, and the aperture of this porous filter 6 is, for example, 20 to 150 mesh. If the opening is larger than 20 mesh, the suspension such as cutting chips is likely to be clogged, which is unsuitable, and if it is smaller than 150 mesh, the pressure loss when the filtered liquid passes through the filter 3. Is unsuitable because it increases the efficiency and deteriorates the solid-liquid separation treatment efficiency.
【００２４】 多孔性フィルター６のフィルター面積としては、例えば１００×〜１００００ ×ｃｍ2 のものを使用するとよく、濾過面積が１００ｍ2 より小さくすると、切 粉等の懸濁物が目詰まりし易くなるとともに、濾過液体が多孔性フィルター６を 通液する際の圧力損失が高くなるで不適当であり、また多孔性フィルター６のフ ィルター３の濾過面積は、１００ｃｍ2 以上であれば、いくら大きくしてもかま わない。 なお多孔性フィルター６の濾過面積を効率よく確保するためには、多孔性フィ ルター５を波型板状あるいは蛇腹状で伸縮可能にしてもよい。The filter area of the porous filter 6 may be, for example, 100 × to 10000 × cm 2 , and if the filtration area is less than 100 m 2 , suspensions such as chips are likely to be clogged. At the same time, the pressure loss when the filtered liquid passes through the porous filter 6 becomes high, which is not suitable, and the filtration area of the filter 3 of the porous filter 6 is 100 cm 2 or more. It doesn't matter. In order to ensure the filtration area of the porous filter 6 efficiently, the porous filter 5 may be expanded and contracted in a corrugated plate shape or a bellows shape.
【００２５】 また、沈殿分離槽１の溢流部４に設けた多孔性フィルター６の下方に、間隔を 置いて、多孔性フィルター５より目開きの大きい３０〜１８０メッシュの予備の 多孔性フィルター（図示せず）を付設して、多孔性フィルター６に対する通液圧 力を低減させたり、切粉等の懸濁物を分離、除去して多孔性フィルター６の切粉 等の懸濁物の濾過能力を最大限に発揮させるようにしてもよいし、さらには多孔 性フィルター６の逆洗の後に再浮上する切粉等の懸濁物を一時的に止めたりして もよい。Further, a spare porous filter of 30 to 180 mesh having a larger opening than the porous filter 5 is provided below the porous filter 6 provided in the overflow section 4 of the precipitation separation tank 1 with a gap ( (Not shown) is attached to reduce the fluid pressure against the porous filter 6 or to separate and remove the suspension of chips and the like to filter the suspension of chips and the like of the porous filter 6. The capacity may be maximized, and furthermore, the suspension of chips and the like that re-float after the backwashing of the porous filter 6 may be temporarily stopped.
【００２６】 スパイラル状のコンベヤー３および多孔性フィルター５は、前述したサブゼロ 硬化処理をしたステンレス鋼製のものが物理的強度に富んでる点で最適であるが 、これ以外にも通常のステンレス鋼線、鉄鋼線、サラン繊維等の物理的強度に富 んでる素材であれば、どんなものでも用いことができる。The spiral conveyor 3 and the porous filter 5 are optimally made of stainless steel that has been subjected to the sub-zero hardening treatment described above because of its excellent physical strength, but other than this, ordinary stainless steel wire is also used. Any material can be used as long as it has a high physical strength, such as steel, steel wire, or Saran fiber.
【００２７】 前述した沈殿分離槽１の上部に設けた蓋４の一箇所を開口させて、切粉等の懸 濁物を含むくクーラント廃液の流入開口７とするが、この流入開口７に代えて、 切粉等の懸濁物のクーラント廃液の流入管（図示せず）を沈殿分離槽１の側面に 設けてもよい。The lid 4 provided on the upper part of the sedimentation separation tank 1 is opened at one place to form an inflow opening 7 for the coolant waste liquid containing suspended matter such as chips, but instead of this inflow opening 7. Then, an inflow pipe (not shown) for the coolant waste liquid of the suspension such as chips may be provided on the side surface of the precipitation separation tank 1.
【００２８】 沈殿分離槽１の上部の一箇所を濾過液の溢流部６とするのは、溢流部６より濾 過液を加圧せずに、自然に溢れて流れるようにすることによって、沈殿分離槽１ 内の切粉等の懸濁物を含むクーラント廃液の流速をできるだけ遅くし、多孔性フ ィルター６が切粉等の懸濁物によって目詰まりすることを極力防止するためであ り、このクーラント廃液の流速（ＬＶ）は、１〜 ２０ｍ／分とすることが望ま しい。 また沈殿分離槽１の溢流部６は、前述した右側の沈殿分離槽１の上部開口を密 閉した蓋４の位置と、沈殿分離槽１の中央部を密閉した蓋４の位置よりも低くす ることが望ましいが、これらの蓋４の位置と同じ高さであってもかまわない。The one part of the upper part of the precipitation separation tank 1 is used as the overflow portion 6 of the filtrate because the filtration liquid is not pressurized from the overflow portion 6 and is allowed to naturally overflow. In order to prevent as much as possible the flow rate of the coolant waste liquid containing the suspension of chips and the like in the precipitation separation tank 1, and to prevent the porous filter 6 from being clogged with the suspension of chips and the like as much as possible. Therefore, it is desirable that the flow rate (LV) of this coolant waste liquid be 1 to 20 m / min. The overflow portion 6 of the sedimentation separation tank 1 is lower than the position of the lid 4 that closes the upper opening of the sedimentation separation tank 1 on the right side and the position of the lid 4 that seals the central portion of the sedimentation separation tank 1 described above. Although it is preferable that the height of the lid 4 is the same as that of the lid 4, the height may be the same.
【００２９】 クーラント廃液の流速（ＬＶ）が１ｍ／分未満であると、切粉等の懸濁物が多 孔性フィルター６に目詰まりすることはないが、切削廃液の流速が遅すぎて固液 分離処理効率が悪くなるために不適当であり、またクーラント廃液の流速（ＬＶ ）が２０ｍ／分を超えると、切粉等の懸濁物が多孔性フィルター６に目詰まりし 易くなるので不適当である。If the flow rate (LV) of the coolant waste fluid is less than 1 m / min, the suspension of cutting chips and the like will not clog the multi-pore filter 6, but the flow rate of the cutting waste fluid will be too slow and the solids will be solid. It is not suitable because the liquid separation treatment efficiency becomes poor. Also, if the flow rate (LV) of the coolant waste liquid exceeds 20 m / min, the suspension of cutting chips and the like tends to become clogged in the porous filter 6, which is unsuitable. Appropriate.
【００３０】 多孔性フィルター６の上方に、多孔性フィルター６の下面に付着した懸濁物を 洗い落とす逆洗ノズル８を沈殿分離槽１の上方に取り付けたロッドレスシリンダ ー９に移動可能に付設してもよく、逆洗ノズル８以外にも逆洗スプレーその他の 逆洗手段を付設してもかまわない。Above the porous filter 6, a backwash nozzle 8 for washing off the suspension adhering to the lower surface of the porous filter 6 is movably attached to a rodless cylinder 9 mounted above the sedimentation separation tank 1. Instead of the backwash nozzle 8, a backwash spray or other backwash means may be additionally provided.
【００３１】 本考案の片溢流式固液分離装置の固液分離処理の操作について、図１に従って 説明すると、まず高圧クーラント法を採用した高速回転切削加工機より排出する 、主としを微細な切粉等の懸濁物とその他の雑多な少量の切粉等の懸濁物を含む くクーラント廃液を、沈殿分離槽１の上部に設けた流入開口７より沈殿分離槽１ 内に流入させると同時に、モーター（図示せず）によって、巻き方が左巻である スパイラル状のコンベヤー３を右回転（時計回転）させると、クーラント廃液に 含まれている切粉等の懸濁物の大部分は、沈殿分離槽１の底面に沈殿する。The operation of the solid-liquid separation process of the overflow type solid-liquid separation device of the present invention will be described with reference to FIG. 1. First, the liquid is discharged from a high-speed rotary cutting machine adopting a high-pressure coolant method, mainly as a fine When a coolant waste liquid containing a suspension of chips and other miscellaneous small amounts of suspensions of chips and the like is introduced into the sedimentation separation tank 1 through an inflow opening 7 provided at the top of the sedimentation separation tank 1. At the same time, when the motor (not shown) rotates the spiral conveyor 3 that is wound leftward to the right (clockwise), most of the suspended matter such as chips contained in the coolant waste liquid is removed. , Is deposited on the bottom surface of the precipitation separation tank 1.
【００３２】 そして、沈殿分離槽１の底面に沈殿した大部分の切粉等の懸濁物（混入する異 物も含めて）を、右回転するスパイラル状のコンベヤー３によって、回転方向に 、左側の沈殿分離槽１（側面直線部分の角度を１００度）の密閉部分の底面およ び側面に押し付けながら、右側の多孔性フィルター６を設けた沈殿分離槽１内に 切粉等の懸濁物の大部分を持ち込むことなく、この密閉部分に保持して沈殿分離 槽１外に連続的に排出して廃棄する。Then, most of the suspended solids (including foreign substances) settled on the bottom surface of the sedimentation separation tank 1 are rotated by the spiral conveyor 3 that rotates clockwise to the left side in the rotation direction. While suspending against the bottom and side of the closed part of the sedimentation separation tank 1 (the angle of the straight side part is 100 degrees), suspended particles such as chips are placed in the sedimentation separation tank 1 provided with the porous filter 6 on the right side. It is held in this sealed part without being brought in, and continuously discharged out of the precipitation separation tank 1 for disposal.
【００３３】 一方、沈殿分離槽１内に流入したクーラント廃液の液面は、次第に上昇して行 き、前述した右側の沈殿分離槽１の密閉部分に保持してスパイラル状のコンベヤ ー３で沈殿分離槽１外に排出されない、少量の切粉等の懸濁物を含むクーラント 廃液が、スパイラル状のコンベヤー３の右回転方向と同じ側である、右側の沈殿 分離槽１（側面直線部分の角度を約２０度）の、大きく開放された開口部の溢流 部５に達すると、この溢流部５に設けた濾過面積を大きくした多孔性フィルター ６によって、クーラント廃液に含まれている少量の切粉等の懸濁物は濾過され、 濾過液体であるクーラントのみが、多孔性フィルターより低流速で溢れて流れて 行くので、これを回収する。On the other hand, the liquid level of the coolant waste liquid that has flowed into the sedimentation separation tank 1 gradually rises, is held in the closed portion of the sedimentation separation tank 1 on the right side described above, and is precipitated by the spiral conveyor 3. The coolant waste liquid containing a small amount of suspended particles such as chips that is not discharged outside the separation tank 1 is on the same side as the spiral conveyor 3 in the right rotation direction. When reaching the overflow portion 5 of the largely opened opening, the porous filter 6 provided in the overflow portion 5 and having a large filtration area provides a small amount of water contained in the coolant waste liquid. The suspension such as chips is filtered, and only the coolant, which is the filtered liquid, overflows at a lower flow rate than the porous filter, and is collected.
【００３４】 なお、前述した固液分離を行っている間に、クーラント廃液の種類や切粉等の 懸濁物の種類または処理条件によっては、多孔性フィルター６の下面に切粉等の 懸濁物が付着することもあるので、このような場合に、必要があれば、ロッドレ スシリンダー８に移動可能に付設した逆洗ノズル８より、濾過液体であるクーラ ントを洗浄液として多孔性フィルター６の上面に噴射して、多孔性フィルター６ の下面に付着した懸濁物を洗い落として沈殿したり、また場合によっては、多孔 性フィルター６を振動機械によって振動させて懸濁物を振るい落として沈殿した りして洗浄てもよい。During the solid-liquid separation described above, depending on the type of coolant waste liquid, the type of suspension such as chips, or the processing conditions, suspension of chips or the like on the lower surface of the porous filter 6 may occur. In such a case, if necessary, a backwash nozzle 8 movably attached to the rodless cylinder 8 can be used as a cleaning liquid to remove the coolant, which is the filtered liquid, from the porous filter 6. The suspension adhered to the lower surface of the porous filter 6 is washed off and settled by spraying onto the upper surface, or in some cases, the porous filter 6 is vibrated by a vibrating machine to shake off the suspended matter and settled. You may wash it.
【００３５】 なお、図１に示すように、スパイラル状のコンベヤー３の上部を、クーラント 廃液の液体の液面より露出させると、左側の沈殿分離槽１の密閉部分のクーラン ト廃液の液面上に漂っている浮遊性の切粉等の懸濁物を、回転するスパイラル状 のコンベヤー３によって、この左側の沈殿分離槽１の密閉部分に保持しながら沈 殿分離槽１外に連続的に排出して廃棄できる。As shown in FIG. 1, when the upper part of the spiral conveyor 3 is exposed from the liquid surface of the coolant waste liquid, the liquid surface of the coolant waste liquid in the closed portion of the precipitation separation tank 1 on the left side is exposed. Suspended particles such as free-floating chips floating in the room are continuously discharged to the outside of the sedimentation separation tank 1 while being held in the closed part of the left sedimentation separation tank 1 by the rotating spiral conveyor 3. Can be discarded.
【００３６】 前述した実施例以外に、図示していないが、巻き方が右巻であるスパイラル状 のコンベヤー３を左回転（反時計回転）させ、沈殿分離槽１の底面に沈殿した大 部分の切粉等の懸濁物を、回転方向に、右側の沈殿分離槽１の密閉部分の底面お よび側面に押し付けながら、この密閉部分に保持して沈殿分離槽１外に連続的に 排出して廃棄し、一方、少量の切粉等の懸濁物を含むクーラント廃液を、スパイ ラル状のコンベヤー３の左回転方向と同じ側である、左側の沈殿分離槽１の開口 部の溢流部５に設けた多孔性フィルター６によって処理し、クーラント廃液に含 まれている少量の切粉等の懸濁物を濾過して、クーラントを回収する場合につい ても、全く同様の操作をすればよい。In addition to the above-described embodiment, although not shown, the spiral conveyor 3 having a right-hand winding is rotated counterclockwise to rotate most of the sediment deposited on the bottom surface of the sedimentation separation tank 1. While pressing the suspension such as chips in the direction of rotation against the bottom surface and side surface of the closed portion of the sedimentation tank 1 on the right side, hold it in this sealed portion and continuously discharge it to the outside of the sedimentation tank 1. On the other hand, the coolant waste liquid containing a small amount of suspension such as cutting chips is discarded, and the overflow portion 5 at the opening of the left sedimentation separation tank 1 on the same side as the leftward rotating direction of the spiral conveyor 3 The same operation may be performed when the coolant is recovered by treating with the porous filter 6 provided in the above and filtering the suspension of a small amount of chips contained in the coolant waste liquid.
【００３７】[0037]
本考案によると、切粉等の懸濁物を含んでいる液体、特に高圧クーラント法に おける微細な切粉等の懸濁物のみを含んでいるクーラント廃液、また微細な切粉 等の懸濁物を主として含むとともに、その他粒径が大きい切粉等の懸濁物とを雑 多に混在して含んでいるクーラント廃液液体より、これらの全ての切粉等の懸濁 物を、多孔性フィルターを目詰まりさせずに、すなわち固液分離処理を中断して 多孔性フィルターを頻繁に洗浄するようなことはしないで、連続的に分離、除去 して固液分離処理効率を飛躍的に高めることが可能である。 According to the present invention, a liquid containing a suspension of chips and the like, particularly a coolant waste liquid containing only a suspension of fine chips and the like in the high pressure coolant method, and a suspension of fine chips and the like. All of these suspended particles such as chips are removed from the coolant waste liquid that contains mainly mixed substances and other suspended particles such as chips with a large particle size mixed in a mixed manner. The solid-liquid separation treatment efficiency can be dramatically improved by continuously separating and removing it without clogging the solid-liquid separation treatment, that is, without interrupting the solid-liquid separation treatment and frequently washing the porous filter. Is possible.
【００３８】 また、本考案によると、切粉等の懸濁物を除去した濾過液体、特に高圧クーラ ント法において使用した多量のクーラント廃液を廃棄せずに、純度のよいクーラ ントとして、コストを安く回収して、再使用することができ、産業廃棄物の活用 という現代の要請に応じることが可能である。In addition, according to the present invention, it is possible to reduce the cost as a high-purity coolant without discarding the filtered liquid from which suspensions such as chips have been removed, especially a large amount of the coolant waste liquid used in the high-pressure coolant method. It can be cheaply collected and reused, and can meet the modern demands of industrial waste utilization.
【００３９】 さらに、本考案によると、切粉等の懸濁物を、固液分離処理を中断して排出す ることなく、固液分離処理中に連続的に沈殿分離槽より脱液、減量化し、連続的 に、効率よく沈殿分離槽より搬出、廃棄することができ、また、沈殿分離槽内に 切粉等の懸濁物以外の異物が混入しても、切粉等の懸濁物とともにスパイラル状 のコンベヤーによって搬出、廃棄して、多孔性フィルターを破損することがない ので、産業廃棄物の処理として優れた技術といえる。Further, according to the present invention, the suspension such as cutting chips is continuously deliquored and reduced from the sedimentation separation tank during the solid-liquid separation process without interrupting and discharging the solid-liquid separation process. Can be continuously and efficiently carried out from the sedimentation separation tank and discarded, and even if foreign matter other than the suspension such as chips is mixed in the sedimentation separation tank, the suspension of chips etc. At the same time, it does not damage the porous filter by carrying it out and discarding it with a spiral conveyor, so it can be said to be an excellent technology for treating industrial waste.
【００４０】 また、逆洗ノズルより、濾過液体（例えばクーラント）を洗浄液として多孔性 フィルターの上面に噴射させることによって、多孔性フィルターの下面に切粉等 の懸濁物が付着しても、この懸濁物を洗い落として沈殿させて多孔性フィルター を洗浄できるので、固液分離処理を長時間継続できる利点もある。Further, even if a suspension such as cutting chips adheres to the lower surface of the porous filter by spraying a filtered liquid (eg, coolant) as a cleaning liquid from the backwash nozzle onto the upper surface of the porous filter, Since the porous filter can be washed by washing out the suspension to precipitate it, there is also an advantage that the solid-liquid separation process can be continued for a long time.
【００４１】 また、スパイラル状のコンベヤーの上部を、クーラント廃液の液体の液面より 露出させると、沈殿分離槽の密閉部分のクーラント廃液の液面上に漂っている浮 遊性の切粉等の懸濁物を、回転するスパイラル状のコンベヤーによって、この沈 殿分離槽の密閉部分に保持しながら、沈殿している切粉等の懸濁物とともに、沈 殿分離槽１外に連続的に排出して廃棄できる効果もある。When the upper part of the spiral conveyor is exposed above the liquid surface of the coolant waste liquid, floating chips and the like floating on the liquid surface of the coolant waste liquid in the closed portion of the sedimentation separation tank are exposed. While the suspension is held in the closed part of the sediment separation tank by a rotating spiral conveyor, it is continuously discharged to the outside of the sediment separation tank 1 together with the suspended particles such as the precipitated chips. There is also an effect that it can be discarded.
【図１】本考案の片溢流式固液分離装置の断面図であ
る。FIG. 1 is a cross-sectional view of a single overflow type solid-liquid separation device of the present invention.
【図２】本考案の片溢流式固液分離装置図の主要部分の
一部切欠斜視図である。FIG. 2 is a partially cutaway perspective view of a main part of a single overflow type solid-liquid separator according to the present invention.
１ 沈殿分離槽 ２ 溢流部 ３ スパイラル状のコンベヤー ４ 蓋 ５ 溢流部 ６ 多孔性フィルター ７ 流入開口 ８ 逆洗ノズル 1 Precipitation Separation Tank 2 Overflow Portion 3 Spiral Conveyor 4 Lid 5 Overflow Portion 6 Porous Filter 7 Inflow Opening 8 Backwash Nozzle
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 24/44 29/94 Ｂ２３Ｑ 11/00 Ｕ 7908−3Ｃ // Ｂ０１Ｄ 29/01 8925−4Ｄ Ｂ０１Ｄ 29/04 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical display location B01D 24/44 29/94 B23Q 11/00 U 7908-3C // B01D 29/01 8925-4D B01D 29/04
Claims (4)
チングフィルター等の多孔性フィルターを設けた断面が
Ｕ字状の沈殿分離槽に、切削切粉等の懸濁物を含む液体
を流入させ、濾過液体をスクリーン状のフィルター、パ
ンチングフィルター等の多孔性フィルターを介して沈殿
分離槽の溢流部分より流出させるとともに、沈殿分離槽
内の下方部に沈殿分離した切粉等の懸濁物を、沈殿分離
槽の底面に近接して回転可能に設けたスパイラル状のコ
ンベヤーで沈殿分離槽の外部に排出するについて、スパ
イラル状のコンベヤーのスパイラルの巻き方に応じて、
スパイラル状のコンベヤーの回転方向を選択し、またス
パイラル状のコンベヤーの回転方向と反対側の沈殿分離
槽の側面直線部分の角度を、スパイラル状のコンベヤー
の回転方向と同じ側の沈殿分離槽の側面直線部分の角度
より大きくするとともに、その沈殿分離槽の上方部およ
び沈殿分離槽の中央部を閉鎖させ、またスパイラル状の
コンベヤーの回転方向と同じ側の沈殿分離槽の開口部を
濾過液体の溢流部とし、この沈殿分離槽の溢流部付近
に、スクリーン状のフィルター、パンチングフィルター
等の多孔性フィルターを付設した片溢流式固液分離装
置。1. A liquid which contains a suspension of cutting chips and the like is allowed to flow into a sedimentation separation tank having a U-shaped cross section in which a porous filter such as a screen filter or a punching filter is provided in an upper portion, and a filtered liquid is obtained. Flow out of the overflow part of the precipitation separation tank through a porous filter such as a screen filter or a punching filter, and at the bottom of the precipitation separation tank, the suspended particles such as chips are separated by sedimentation. About discharging to the outside of the precipitation separation tank with a spiral conveyor rotatably provided near the bottom of the tank, depending on the spiral winding method of the spiral conveyor,
Select the rotation direction of the spiral conveyor, and the side of the precipitation separation tank on the side opposite to the rotation direction of the spiral conveyor, the angle of the straight line part is the side of the precipitation separation tank on the same side as the rotation direction of the spiral conveyor. The angle should be larger than the angle of the straight line part, the upper part of the precipitation separation tank and the central part of the precipitation separation tank should be closed, and the opening of the precipitation separation tank on the same side as the rotating direction of the spiral conveyor should overflow the filtered liquid. A single overflow type solid-liquid separation device having a flow section and a porous filter such as a screen-shaped filter or a punching filter provided near the overflow section of the precipitation separation tank.
反対側の沈殿分離槽の側面直線部分の角度を１０〜４０
度とし、スパイラル状のコンベヤーの回転方向と同じ側
の沈殿分離槽の側面直線部分の角度を９０〜１３５度と
する請求項１記載の片溢流式固液分離装置。2. The angle of the linear portion of the side surface of the precipitation separation tank on the side opposite to the rotating direction of the spiral conveyor is 10 to 40.
2. The overflow type solid-liquid separation device according to claim 1, wherein the angle of the linear portion of the side surface of the precipitation separation tank on the same side as the rotation direction of the spiral conveyor is 90 to 135 degrees.
フィルターの上方に、逆洗液ノズル等の洗浄手段を付設
した請求項１または請求項２記載の片溢流式固液分離装
置。3. The single overflow type solid-liquid separation according to claim 1 or 2, wherein a washing means such as a backwash liquid nozzle is provided above the porous filter provided in the vicinity of the overflow portion of the precipitation separation tank. apparatus.
削切粉等の懸濁物を含む液体の液面より露出させた請求
項２記載の片溢流式固液分離装置。4. The single overflow type solid-liquid separation device according to claim 2, wherein the upper part of the spiral conveyor is exposed from the liquid surface of the liquid containing the suspension of cutting chips and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9270292U JP2582464Y2 (en) | 1992-12-25 | 1992-12-25 | Single overflow solid-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9270292U JP2582464Y2 (en) | 1992-12-25 | 1992-12-25 | Single overflow solid-liquid separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0652915U true JPH0652915U (en) | 1994-07-19 |
| JP2582464Y2 JP2582464Y2 (en) | 1998-10-08 |
Family
ID=14061825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9270292U Expired - Lifetime JP2582464Y2 (en) | 1992-12-25 | 1992-12-25 | Single overflow solid-liquid separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582464Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554009A (en) * | 2018-06-26 | 2018-09-21 | 苏州润城环保科技有限公司 | A kind of very fast filter device of rainwater |
| CN109248477A (en) * | 2018-10-29 | 2019-01-22 | 中冶北方（大连）工程技术有限公司 | A kind of horizontal sand warehouse overflow dehydration device |
-
1992
- 1992-12-25 JP JP9270292U patent/JP2582464Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554009A (en) * | 2018-06-26 | 2018-09-21 | 苏州润城环保科技有限公司 | A kind of very fast filter device of rainwater |
| CN109248477A (en) * | 2018-10-29 | 2019-01-22 | 中冶北方（大连）工程技术有限公司 | A kind of horizontal sand warehouse overflow dehydration device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2582464Y2 (en) | 1998-10-08 |
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