JP3615128B2 - Device for removing foreign matter in running water - Google Patents

Device for removing foreign matter in running water Download PDF

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Publication number
JP3615128B2
JP3615128B2 JP2000217243A JP2000217243A JP3615128B2 JP 3615128 B2 JP3615128 B2 JP 3615128B2 JP 2000217243 A JP2000217243 A JP 2000217243A JP 2000217243 A JP2000217243 A JP 2000217243A JP 3615128 B2 JP3615128 B2 JP 3615128B2
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Japan
Prior art keywords
foreign matter
screen
scraping blade
running water
foreign
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JP2000217243A
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Japanese (ja)
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JP2002028410A (en
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俊二 本間
朝治 室井
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株式会社日立エンジニアリングサービス
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Description

【0001】
【発明の属する技術分野】
本発明は復水器や冷却器などの冷却水入口配管や下水配管などに設置し、流水中の固形異物やシート状異物などを除去するための流水中の異物を除去する装置、特にスクリーン上に付着した異物を掻取ブレードにより機械的に除去し、系外に排出する流水中の異物を除去する装置に関する。
【0002】
【従来の技術】
従来一般に知られているこの種の異物除去装置は、例えば特開平6−15120号に記載されている。この装置は、先端で接続して山形を形成する回動可能な濾過部材、第1段フラップ、第2段フラップ、異物排出管を配管胴体内に配置したものであり、この濾過部材の前面に付着した異物を第1段フラップの作動によって、第2段フラップの下流側に流下させる。
【0003】
その後、第2段フラップを作動することにより、第2段フラップによって濾過部材の一部で表面からの流れが遮閉され、この部分の濾過部材では異物排出口に向かって濾過部材の後面からの流れが発生し、異物が逆洗流によって排出管へ送られ系外へ排出される。
【0004】
【発明が解決しようとする課題】
この様な従来の異物除去装置は、濾過部材上に付着した異物をフラップの作動により剥離させ、異物排出管の出口へ導くためにフラップを多段に配置して選択的に作動させる構成となっている。このため、可動部が多く、フラップに駆動装置が必要であるので、機構的に複雑であり、コストダウンが図りにくかった。
【0005】
また、付着異物の剥離に逆洗流を使用しているため、濾過部材に挟まった異物は取れにくかった。従って、本発明の目的は、機構的に簡素であるとともに安価であり、かつ、異物除去性能の高い流水中の異物を除去する装置を提供することである。
【0006】
【課題を解決するための手段】
本発明は、固形異物やシート状異物などを含む水に用いられる配管路に設置される流水中の異物を除去する装置において、流水中の異物を捕捉するスクリーンと、前記スクリーン上に付着した異物を機械的に掻き取る掻取ブレードと、前記掻取ブレードの移動方向と交叉する方向に延び、掻き取られた異物を前記スクリーン上から除去する樋と、前記樋に接続され、前記樋内の異物を系外に排出する異物排出管とを備えたものである。
【0007】
これにより簡素な構成で安価で、かつ、確実な異物排出を可能とする。また、渦流発生部材を掻取ブレードに取り付けることにより、掻取ブレードの進行方向近傍のスクリーン上に渦流を発生させ、付着異物をスクリーン上から剥離させながら確実に掻き取ると共に樋上において樋内の異物を渦流により異物排出管まで速やかに移動させることを可能とする。
【0008】
【発明の実施の形態】
本発明装置の実施の形態を図1〜図3に示す。図1は、本発明の流水中の異物除去装置の構造を示す縦断面図、図2は、上流側から見た図、図3は掻取ブレードの詳細例を示す図である。流水中異物除去装置は、胴体1、スクリーン2、掻取ブレード3、樋4、異物排出管5、仕切弁6、差圧検出器7等から構成される。
【0009】
スクリーン2は、リング状の平面形をしており胴体1に固定され、径方向に延びる樋4が取り付けられている。中心には異物排出管5の入口側が樋4と接続されており、また、掻取ブレード3の回転軸11を支持する軸受12が取り付けられている。
【0010】
スクリーン2は、対象異物の種類により格子状スクリーンとしてもよい。樋4は、半径方向に延びているのに対して、掻取ブレード3の移動方向は円周方向であり、従って両者は交叉している。これによりブレード3により掻き取られた異物は円滑に樋4に集められる。
【0011】
スクリーン2の下流側には、径方向に補強板が取り付けられているが図示を省略している。掻取ブレード3は回転軸11に取り付けられ、異物排出管5に取り付けられた軸受12と、掻取ブレード3の上流側に胴体1からリブ18を介して取り付けられた軸受13とにより支持され、回転軸11を中心に回転する。尚、図2においてはリブ18の図示は省略している。
【0012】
掻取ブレード3の回転は、掻取ブレード回転用歯14、駆動用歯15、駆動軸16、モータなどの駆動装置17により行われる。
【0013】
回転速度は任意に設定できるが、通常1回転/分程度としている。回転方向の一例を矢印21により示す。掻取ブレード3は複数個取り付けることができ、それぞれ掻き取った異物は樋4の溝に確実に落とされる。樋4は、スクリーン2の径方向に延びるように設けられ、落とされた異物の移動を容易にするため異物排出管5に向うにしたがい深さが深くなっている。
【0014】
掻取ブレード3により掻き取られ、樋4に落とされた異物は、案内流により異物排出管5に導かれ、仕切弁6を通過して系外に排出される。尚、一般的な運転方法としては、スクリーン2の前後差圧を差圧検出器7により監視し、異物付着により、ある設定値以上になった場合に掻取ブレード3を回転させると共に仕切弁6を開き異物排出を行う。異物排出は、通常、差圧がある設定値以下になった時点で終了するが、タイマ等による時間設定でもよい。また、異物の流入量によっては、常時仕切弁6を開き、掻取ブレード3を連続回転して常時排出運転を行ってもよい。
【0015】
図3に詳細に示すように、掻取ブレード3に設けられた爪32は、スクリーン2のリングの隙間に入り込む形状をしており、スクリーン2上の固形異物を確実に掻き取ると共にそれに張り付いたビニール等のシート状異物も容易に掻き取ることができる。掻取ブレード3の材質としては金属、樹脂、ゴム等の弾性体、または、これらの組み合わせが選択できる。
【0016】
図4、図5は本発明の他の実施の形態を示したもので、スクリーン2をリング状の円錐形とすることにより、異物捕捉面積を大きくすることができ、異物付着時の差圧上昇を小さくすることができる。
【0017】
図6、図7は本発明の他の実施の形態を示したもので、異物排出管5と樋4との接続位置を胴体1側にしたものである。尚、この実施の形態では異物排出管5は2箇所となっているが、樋4をひとつとし片側の1箇所としてもよいし、逆に2箇所以上としてもよい。この実施の形態は異物排出管5の入口側を配管中央に持つ前記実施の形態と比較し、曲がり管部が不要となるため胴長を短くでき、更にコスト低減が図れるという特長がある。また、曲がり管部がないため異物排出管5及び樋4の清掃が容易に実施できる。
【0018】
図8〜図11は本発明の他の実施の形態を示したもので、掻取ブレード3に渦流発生部材8を取り付けたものである。図10は渦流発生部材8の詳細例を示した図、図11は渦流による異物剥離の状態を示した図である。掻取ブレード3は前記実施の形態と同様回転軸11を中心にスクリーン2上の異物を掻き取りながら回転するが、渦流発生部材8の効果により異物22はスクリーン2上から浮き上がりながら掻き取られるため異物22のスクリーン2面への残留がなく、完全な異物除去が可能となる。
【0019】
また、掻取ブレード3が樋4上に来た時には樋4内に渦流が発生し、樋4内の落下異物を速やかに異物排出管5へ導く効果も備えている。図10に渦流発生部材8の詳細例を示しているが、掻取ブレード3の近傍で渦流が発生するものであれば如何なる形状でもよい。勿論、掻取ブレード3と一体構造としてもよい。また、図11に渦流による異物22の剥離の状態を示すが、図に示す様に掻取ブレード3の進行方向で異物22が浮き上がるため掻き取りが容易になり、残留異物のない確実な異物排出を行うことができる。
【0020】
以上のように本発明によれば、スクリーン上に付着した異物を機械的に掻取ブレードにより確実に掻き取り除去することができ、簡素な構成で確実な異物排出が達成できる。
【0021】
【発明の効果】
以上説明してきたように流水中の異物を除去する装置において、流水中に存在する異物をスクリーンで捕捉し、この異物を掻取ブレードで機械的に確実に樋に向かって掻き落とし、樋に連接した異物排出管から系外に排出するので、機構的に簡素で安価で、異物除去性能の高い流水中異物除去装置が提供できる。
【図面の簡単な説明】
【図1】本発明の流水中異物除去装置の一実施例を示す縦断面図である。
【図2】図1を上流側から見た図である。
【図3】図1、図2の掻取ブレードの詳細例を示す図である。
【図4】本発明の流水中異物除去装置の他の実施例を示す縦断面図である。
【図5】図4を上流側から見た図である。
【図6】本発明の流水中異物除去装置の他の実施例を示す縦断面図である。
【図7】図6を上流側から見た図である。
【図8】本発明の流水中異物除去装置の他の実施例を示す縦断面図である。
【図9】図8を上流側から見た図である。
【図10】図8、図9の渦流発生部材の詳細例を示す図である。
【図11】渦流による異物剥離の状態を示す図である。
【符号の説明】
1…胴体、2…スクリーン、3…掻取ブレード、4…樋、5…異物排出管、6…仕切弁、7…差圧検出器、8…渦流発生部材、11…回転軸、12…軸受、13…軸受、14…掻取ブレード回転用歯、15…駆動用歯、16…駆動軸、17…駆動装置、18…リブ、21…回転方向を示す矢印、22…異物。
[0001]
BACKGROUND OF THE INVENTION
The present invention is installed in a cooling water inlet pipe or sewage pipe such as a condenser or a condenser, and removes foreign matters in running water for removing solid foreign matters or sheet-like foreign matters in running water, particularly on a screen. The present invention relates to a device that mechanically removes foreign matter adhering to the surface with a scraping blade and removes foreign matter in running water discharged out of the system.
[0002]
[Prior art]
This kind of foreign matter removing apparatus generally known in the prior art is described in, for example, Japanese Patent Laid-Open No. 6-15120. In this device, a rotatable filter member, a first stage flap, a second stage flap, and a foreign matter discharge pipe that are connected at the tip to form a chevron are arranged in a pipe body. The adhered foreign matter is caused to flow down to the downstream side of the second stage flap by the operation of the first stage flap.
[0003]
After that, by operating the second stage flap, the flow from the surface is blocked by a part of the filtering member by the second stage flap, and in this part of the filtering member from the rear surface of the filtering member toward the foreign matter discharge port A flow is generated, and foreign matter is sent to the discharge pipe by backwashing and discharged out of the system.
[0004]
[Problems to be solved by the invention]
Such a conventional foreign matter removing device is configured to selectively operate by separating the foreign matter adhering to the filtration member by the operation of the flap and arranging the flaps in multiple stages in order to guide it to the outlet of the foreign matter discharge pipe. Yes. For this reason, since there are many movable parts and a driving device is required for the flap, the mechanism is complicated and it is difficult to reduce the cost.
[0005]
Moreover, since the backwash flow is used for peeling off the adhered foreign matter, it is difficult to remove the foreign matter sandwiched between the filtration members. Accordingly, an object of the present invention is to provide an apparatus for removing foreign matter in running water that is mechanically simple, inexpensive, and has high foreign matter removal performance.
[0006]
[Means for Solving the Problems]
The present invention relates to an apparatus for removing foreign matter in running water installed in a pipe line used for water containing solid foreign matter, sheet-like foreign matter, etc., and a screen for catching foreign matter in running water, and the foreign matter attached on the screen. A scraping blade for mechanically scraping, a scissors extending in a direction crossing the moving direction of the scraping blade, and removing the scraped foreign matter from the screen, and connected to the scissors, A foreign matter discharge pipe for discharging foreign matter out of the system is provided.
[0007]
As a result, the foreign matter can be reliably discharged with a simple structure at low cost. In addition, by attaching the eddy current generating member to the scraping blade, a vortex is generated on the screen in the vicinity of the moving direction of the scraping blade, and the adhered foreign matter is scraped off while being peeled off from the screen, and the foreign matter in the cage is taken up on the heel. Can be quickly moved to the foreign material discharge pipe by eddy current.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the apparatus of the present invention is shown in FIGS. FIG. 1 is a longitudinal sectional view showing the structure of a foreign matter removing apparatus for flowing water according to the present invention, FIG. 2 is a view seen from the upstream side, and FIG. 3 is a view showing a detailed example of a scraping blade. The apparatus for removing foreign matter under running water includes a body 1, a screen 2, a scraping blade 3, a gutter 4, a foreign matter discharge pipe 5, a gate valve 6, a differential pressure detector 7, and the like.
[0009]
The screen 2 has a ring-like planar shape, is fixed to the body 1, and has a flange 4 extending in the radial direction. The entrance side of the foreign matter discharge pipe 5 is connected to the flange 4 at the center, and a bearing 12 that supports the rotating shaft 11 of the scraping blade 3 is attached.
[0010]
The screen 2 may be a lattice screen depending on the type of target foreign matter. The flange 4 extends in the radial direction, whereas the moving direction of the scraping blade 3 is the circumferential direction, and therefore the two intersect. Thereby, the foreign matter scraped off by the blade 3 is smoothly collected in the basket 4.
[0011]
On the downstream side of the screen 2, a reinforcing plate is attached in the radial direction, but the illustration is omitted. The scraping blade 3 is attached to the rotary shaft 11 and supported by a bearing 12 attached to the foreign matter discharge pipe 5 and a bearing 13 attached to the upstream side of the scraping blade 3 from the body 1 via a rib 18. It rotates around the rotating shaft 11. In FIG. 2, the ribs 18 are not shown.
[0012]
The scraping blade 3 is rotated by a driving device 17 such as a scraping blade rotating tooth 14, a driving tooth 15, a driving shaft 16, and a motor.
[0013]
The rotation speed can be arbitrarily set, but is usually about 1 rotation / minute. An example of the rotation direction is indicated by an arrow 21. A plurality of scraping blades 3 can be attached, and each scraped foreign matter is surely dropped into the groove of the ridge 4. The gutter 4 is provided so as to extend in the radial direction of the screen 2, and the depth increases toward the foreign matter discharge pipe 5 in order to facilitate the movement of the dropped foreign matter.
[0014]
The foreign matter scraped off by the scraping blade 3 and dropped onto the gutter 4 is guided to the foreign matter discharge pipe 5 by the guide flow, passes through the gate valve 6 and is discharged out of the system. As a general operation method, the differential pressure across the screen 2 is monitored by the differential pressure detector 7, and the scraping blade 3 is rotated and the gate valve 6 if the foreign matter adheres to a certain set value or more. Open to discharge foreign matter. Foreign matter discharge is usually terminated when the differential pressure falls below a certain set value, but it may be set by a timer or the like. Further, depending on the inflow amount of foreign matter, the gate valve 6 may always be opened and the scraping blade 3 may be continuously rotated to perform the continuous discharge operation.
[0015]
As shown in detail in FIG. 3, the claw 32 provided on the scraping blade 3 has a shape that enters into the gap of the ring of the screen 2, so that solid foreign matter on the screen 2 is surely scraped and stuck to it. Also, sheet-like foreign matters such as vinyl can be easily scraped off. As the material of the scraping blade 3, an elastic body such as metal, resin, rubber, or a combination thereof can be selected.
[0016]
4 and 5 show another embodiment of the present invention. By making the screen 2 a ring-shaped cone, the foreign matter catching area can be increased, and the differential pressure rises when the foreign matter adheres. Can be reduced.
[0017]
6 and 7 show another embodiment of the present invention, in which the connection position between the foreign matter discharge pipe 5 and the flange 4 is on the body 1 side. In this embodiment, there are two foreign matter discharge pipes 5, but one ridge 4 may be provided as one place on one side, and conversely, two or more places may be provided. Compared with the above-described embodiment in which the inlet side of the foreign matter discharge pipe 5 is provided at the center of the pipe, this embodiment has a feature that the length of the body can be shortened and the cost can be further reduced since the bent pipe portion is not required. Moreover, since there is no bent pipe part, cleaning of the foreign material discharge pipe 5 and the gutter 4 can be easily performed.
[0018]
8 to 11 show another embodiment of the present invention, in which the vortex generating member 8 is attached to the scraping blade 3. FIG. 10 is a diagram showing a detailed example of the eddy current generating member 8, and FIG. 11 is a diagram showing a state of foreign matter separation due to the eddy current. The scraping blade 3 rotates while scraping off the foreign matter on the screen 2 around the rotating shaft 11 as in the above embodiment, but the foreign matter 22 is scraped off while lifting from the screen 2 due to the effect of the eddy current generating member 8. There is no residue of the foreign matter 22 on the screen 2 surface, and complete foreign matter removal is possible.
[0019]
Further, when the scraping blade 3 comes on the ridge 4, a vortex flow is generated in the ridge 4, and there is an effect that the fallen foreign matter in the ridge 4 is quickly guided to the foreign matter discharge pipe 5. FIG. 10 shows a detailed example of the eddy current generating member 8, but any shape may be used as long as eddy current is generated in the vicinity of the scraping blade 3. Of course, the scraping blade 3 may be integrated with the scraping blade 3. Further, FIG. 11 shows a state where the foreign matter 22 is peeled off by the eddy current. As shown in the figure, the foreign matter 22 is lifted in the moving direction of the scraping blade 3, so that the scraping is easy and reliable foreign matter discharge without residual foreign matter is shown. It can be performed.
[0020]
As described above, according to the present invention, the foreign matter adhered on the screen can be reliably scraped and removed mechanically by the scraping blade, and reliable foreign matter discharge can be achieved with a simple configuration.
[0021]
【The invention's effect】
As described above, in a device for removing foreign matter in running water, the foreign matter present in the running water is captured with a screen, and the foreign matter is mechanically scraped off toward the kite with a scraping blade and connected to the kite. Since the discharged foreign matter discharge pipe is discharged out of the system, it is possible to provide a flowing water foreign matter removing device that is mechanically simple and inexpensive and has high foreign matter removing performance.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of a foreign matter removing apparatus for running water according to the present invention.
FIG. 2 is a diagram of FIG. 1 viewed from the upstream side.
FIG. 3 is a view showing a detailed example of the scraping blade of FIGS. 1 and 2;
FIG. 4 is a longitudinal sectional view showing another embodiment of the apparatus for removing foreign matter under running water according to the present invention.
FIG. 5 is a view of FIG. 4 as viewed from the upstream side.
FIG. 6 is a longitudinal sectional view showing another embodiment of the apparatus for removing foreign matter under running water according to the present invention.
7 is a view of FIG. 6 as viewed from the upstream side.
FIG. 8 is a longitudinal sectional view showing another embodiment of the apparatus for removing foreign matter under running water according to the present invention.
FIG. 9 is a view of FIG. 8 as viewed from the upstream side.
10 is a view showing a detailed example of the eddy current generating member of FIGS. 8 and 9. FIG.
FIG. 11 is a diagram showing a state of foreign matter peeling due to eddy current.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... fuselage, 2 ... screen, 3 ... scraping blade, 4 ... spear, 5 ... foreign matter discharge pipe, 6 ... gate valve, 7 ... differential pressure detector, 8 ... eddy current generating member, 11 ... rotating shaft, 12 ... bearing , 13 bearings, 14 scraping blade rotating teeth, 15 driving teeth, 16 driving shafts, 17 driving devices, 18 ribs, 21 arrows indicating the direction of rotation, and 22 foreign substances.

Claims (2)

固形異物やシート状異物などを含む水に用いられる配管路に設置される流水中の異物を除去する装置において、流水中の異物を捕捉するスクリーンと、回転軸に回転可能に支持されるとともに前記スクリーンに対向して半径方向に延び、その回転移動により前記スクリーンに付着する異物を機械的に掻き取る掻取ブレードと、前記スクリーンを横切って前記掻取ブレードと同じ半径方向に延び、掻き取られた異物を前記スクリーンから除去する樋と、前記樋に接続され前記樋内の異物を系外に排出する異物排出管を備えることを特徴とする流水中の異物を除去する装置。In an apparatus for removing foreign matter in running water installed in a pipe line used for water containing solid foreign matter or sheet-like foreign matter, a screen that captures foreign matter in running water, and a rotary shaft that is rotatably supported A scraping blade that extends radially in opposition to the screen and mechanically scrapes foreign matter adhering to the screen by its rotational movement, and extends in the same radial direction as the scraping blade across the screen and scraped off. A device for removing foreign matter in running water, comprising: a spear for removing the foreign matter from the screen; and a foreign matter discharge pipe connected to the spear to discharge the foreign matter in the spear to the outside of the system. 固形異物やシート状異物などを含む水に用いられる配管路に設置される流水中の異物を除去する装置において、流水中の異物を捕捉するスクリーンと、回転軸に回転可能に支持されるとともに前記スクリーンに対向して半径方向に延び、その回転移動により前記スクリーンに付着する異物を機械的に掻き取る掻取ブレードと、前記スクリーンを横切って前記掻取ブレードと同じ半径方向に延び、掻き取られた異物を前記スクリーンから除去する樋と、前記樋に接続され前記樋内の異物を系外に排出する異物排出管と、前記掻取ブレードの進行方向へ延びるように前記掻取ブレードへ取り付けられ、渦流を発生する渦流発生部材とを備え、前記スクリーン付着異物を渦流により剥離させることを特徴とする流水中の異物を除去する装置。In a device for removing foreign matter in running water installed in a pipe line used for water containing solid foreign matter or sheet-like foreign matter, a screen that captures foreign matter in running water, and a rotary shaft that is rotatably supported and A scraping blade that extends radially in opposition to the screen and mechanically scrapes foreign matter adhering to the screen by its rotational movement, and extends in the same radial direction as the scraping blade across the screen and scraped off. a trough which the foreign matter removed from the screen and a foreign material discharge pipe connected to said trough for discharging foreign matters in said trough to the outside of the system, attached to said scraping blade so as to extend to the traveling direction of the scraping blade , and a vortex generating member for generating a vortex apparatus for removing foreign substances in the flowing water, characterized in that to separate attached foreign matter of the screen by vortex.
JP2000217243A 2000-07-13 2000-07-13 Device for removing foreign matter in running water Expired - Fee Related JP3615128B2 (en)

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