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JP2008279484A - Screw press dehydrator - Google Patents

Screw press dehydrator Download PDF

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Publication number
JP2008279484A
JP2008279484A JP2007126390A JP2007126390A JP2008279484A JP 2008279484 A JP2008279484 A JP 2008279484A JP 2007126390 A JP2007126390 A JP 2007126390A JP 2007126390 A JP2007126390 A JP 2007126390A JP 2008279484 A JP2008279484 A JP 2008279484A
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JP
Japan
Prior art keywords
screw
press dehydrator
bearing
cylindrical screen
screw press
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2007126390A
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Japanese (ja)
Inventor
Takuya Ando
卓也 安東
Terukazu Araoka
輝一 新阜
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Hitachi Ltd
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Hitachi Plant Technologies Ltd
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Filing date
Publication date
Application filed by Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP2007126390A priority Critical patent/JP2008279484A/en
Publication of JP2008279484A publication Critical patent/JP2008279484A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw press dehydrator, wherein a bearing is formed at the tip side of a screw without using a bracket, thus the service life of the bearing on the side of a motor is elongated, and further, the rotation of the screw is stabilized. <P>SOLUTION: The screw press dehydrator is constituted so that a screw 2 is rotatably arranged at the inside of a cylindrical screen 1, and further, the tip part of the cylindrical screen 1 is provided with a consolidation zone 3 consolidating impurities carried by a screw 2, wherein the axis part 21 of the screw 2 is extensively provided so as to pass through the compaction zone 3 of the axis part 21 of the screw 2, and the axis part 21 is pivotaly supported by the impurities S compacted in the compaction zone 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、スクリュー式脱水機に関し、特に、ブラケットを用いることなくスクリューの先端側に軸受を形成することにより、モータ側の軸受の寿命を延ばすとともに、スクリューの回転を安定させるようにしたスクリュープレス脱水機に関するものである。   The present invention relates to a screw-type dehydrator, and in particular, a screw press that extends the life of a motor-side bearing and stabilizes the rotation of the screw by forming a bearing on the tip side of the screw without using a bracket. It relates to dehydrators.

従来、汚水処理設備で発生したし渣等を脱水するためにスクリュープレス脱水機が用いられている。
このスクリュープレス脱水機は、図2に示すように、円筒形スクリーン1(ケーシング)内にスクリュー2を回転可能に配設するとともに、円筒形スクリーン1の先端部に、スクリュー2により搬送された夾雑物を圧密する圧密ゾーン3を設けている。
Conventionally, a screw press dehydrator has been used to dewater residue generated in a sewage treatment facility.
As shown in FIG. 2, the screw press dehydrator has a screw 2 rotatably disposed in a cylindrical screen 1 (casing) and is conveyed to the tip of the cylindrical screen 1 by the screw 2. A consolidation zone 3 for compacting objects is provided.

この圧密ゾーン3は、円筒形スクリーン1の終端に背圧板4を設けることにより、スクリュー2で搬送された夾雑物を圧密しながら排出する空洞である。
このため、スクリュー2の軸部21は片持ち構造となり、モータ側の軸受6に負荷がかかって劣化が生じやすく、さらに、ひとたび軸受6が劣化すると軸芯が大きくずれてしまい、円筒形スクリーン1とスクリュー2が干渉し摩耗が生じてしまう。
また、圧密ゾーン3やその下流側に軸受を設けようとすれば、軸受を支えるブラケットが必要になり、夾雑物がこのブラケットにからみついて、維持管理性に悪影響を及ぼすという問題があった。
The compaction zone 3 is a cavity that discharges the foreign matter conveyed by the screw 2 while being compacted by providing a back pressure plate 4 at the end of the cylindrical screen 1.
For this reason, the shaft portion 21 of the screw 2 has a cantilever structure, and a load is easily applied to the motor-side bearing 6. Further, once the bearing 6 is deteriorated, the shaft core is greatly displaced, and the cylindrical screen 1 And the screw 2 interfere with each other and wear occurs.
Further, if a bearing is provided in the compaction zone 3 or the downstream side thereof, a bracket for supporting the bearing is required, and there is a problem that impurities are entangled with the bracket and adversely affect the maintenance.

本発明は、上記従来のスクリュープレス脱水機が有する問題点に鑑み、ブラケットを用いることなくスクリューの先端側に軸受を形成することにより、モータ側の軸受の寿命を延ばすとともに、スクリューの回転を安定させるようにしたスクリュープレス脱水機を提供することを目的とする。   In view of the problems of the conventional screw press dehydrator described above, the present invention extends the life of the bearing on the motor side and stabilizes the rotation of the screw by forming the bearing on the tip side of the screw without using a bracket. It is an object of the present invention to provide a screw press dehydrator that can be made to operate.

上記目的を達成するため、本発明のスクリュープレス脱水機は、円筒形スクリーンの内部にスクリューを回転可能に配設するとともに、円筒形スクリーンの先端部に、スクリューにより搬送された脱水処理物を圧密する圧密ゾーンを設けたスクリュープレス脱水機において、スクリューの軸部を圧密ゾーンの内部まで延設し、該軸部を圧密ゾーンで圧密した脱水処理物により枢支するようにしたことを特徴とする。   In order to achieve the above object, the screw press dehydrator of the present invention has a screw rotatably disposed inside a cylindrical screen and compacts the dehydrated material conveyed by the screw at the tip of the cylindrical screen. In a screw press dehydrator provided with a consolidation zone, the shaft portion of the screw is extended to the inside of the consolidation zone, and the shaft portion is pivotally supported by a dehydrated processed product consolidated in the consolidation zone. .

本発明のスクリュープレス脱水機によれば、円筒形スクリーンの内部にスクリューを回転可能に配設するとともに、円筒形スクリーンの先端部に、スクリューにより搬送された脱水処理物を圧密する圧密ゾーンを設けたスクリュープレス脱水機において、スクリューの軸部を圧密ゾーンの内部まで延設し、該軸部を圧密ゾーンで圧密した脱水処理物により枢支することから、スクリューの先端側にブラケットを用いることなく軸受を形成することができ、これにより、モータ側の軸受の寿命を延ばすとともに、スクリューの回転を安定させることができる。
また、圧密した脱水処理物による軸受のため、仮に長期運転にて軸芯にずれが生じた場合でも、このずれでできた軸部と軸受の隙間はただちに脱水処理物により埋められることになり、構造的な変化に追従することができる。
According to the screw press dehydrator of the present invention, the screw is rotatably disposed inside the cylindrical screen, and a compaction zone for compacting the dehydrated material conveyed by the screw is provided at the tip of the cylindrical screen. In the screw press dehydrator, the shaft part of the screw is extended to the inside of the compaction zone, and the shaft part is pivotally supported by the dehydrated product compacted in the compaction zone, so that a bracket is not used on the tip side of the screw. A bearing can be formed, thereby extending the life of the bearing on the motor side and stabilizing the rotation of the screw.
In addition, because the bearing is a compacted dehydrated product, even if the shaft core is displaced during a long-term operation, the gap between the shaft portion and the bearing formed by this displacement is immediately filled with the dehydrated product, It can follow structural changes.

以下、本発明のスクリュープレス脱水機の実施の形態を、図面に示す実施例に基づいて説明する。   Hereinafter, an embodiment of a screw press dehydrator of the present invention will be described based on examples shown in the drawings.

図1に、本発明のスクリュープレス脱水機の一実施例を示す。
このスクリュープレス脱水機は、例えば、下水処理の夾雑物を脱水処理するものであり、円筒形スクリーン1の内部にスクリュー2を回転可能に配設するとともに、円筒形スクリーン1の先端部に、スクリュー2により搬送された夾雑物を圧密する圧密ゾーン3を設けている。
そして、このスクリュープレス脱水機は、スクリュー2の軸部21を圧密ゾーン3を貫通するように延設し、該軸部21を圧密ゾーン3で圧密した夾雑物Sにより枢支するようにしている。
FIG. 1 shows an embodiment of the screw press dehydrator according to the present invention.
This screw press dehydrator, for example, dehydrates impurities from sewage treatment, and a screw 2 is rotatably disposed inside the cylindrical screen 1 and a screw is disposed at the tip of the cylindrical screen 1. 2 is provided with a compaction zone 3 for compacting the contaminants conveyed by 2.
In this screw press dehydrator, the shaft portion 21 of the screw 2 extends so as to penetrate the consolidation zone 3, and the shaft portion 21 is pivotally supported by the contaminant S consolidated in the consolidation zone 3. .

円筒形スクリーン1は、所要の径と長さを有し、洗浄水や汚水を排出できるように、その周面或いは下面側にスリットを設けるか、多数の小孔を形成するようにしている。
このスリットの形状に関しては、夾雑物の捕捉目的や通水能力に応じて自由に設定できるものとし、例えば、円筒形スクリーン1の上流側では、多量の汚水が濾過されて流水されるようスリットの数を多くしたり、スリット幅を大とし、下流側では、夾雑物の加圧脱水時に漏出する脱離汚水のみを通水するだけでよいため、流出汚水量も少なくなるので、スリットの数を少なくしたりスリット幅を小とすることができる。
そして、円筒形スクリーン1の先端部には、円筒形スクリーン1の終端に背圧板4を設けることにより、スクリュー2で搬送された夾雑物を圧密しながら排出する圧密ゾーン3が設けられている。
The cylindrical screen 1 has a required diameter and length, and is provided with slits or a large number of small holes on its peripheral surface or lower surface so that washing water and sewage can be discharged.
Regarding the shape of the slit, it can be freely set according to the purpose of trapping contaminants and the water passing capacity. For example, on the upstream side of the cylindrical screen 1, a large amount of sewage is filtered and allowed to flow. Increasing the number or increasing the slit width, and it is only necessary to pass only the desorbed sewage that leaks during the pressure dehydration of the contaminants on the downstream side. The slit width can be reduced.
At the tip of the cylindrical screen 1, a compaction zone 3 is provided in which the back pressure plate 4 is provided at the end of the cylindrical screen 1, thereby discharging the foreign matter conveyed by the screw 2 while compacting.

スクリュー2は、円筒形スクリーン1の内部に回転可能に配設されており、その軸部21の外周部に螺旋状に羽根22を形成し、軸部21の基部側に配設したモータ5により所定の回転速度で回転駆動する。
スクリュー2の先端側は、軸部21のみが圧密ゾーン3を貫通するように延設されており、圧密ゾーン3で圧密した夾雑物Sによりこの軸部21が枢支される。
このように、スクリュー2の軸部21を圧密ゾーン3まで延設することにより、圧密した夾雑物Sは必然的に延設した軸部21の周りに形成される。これにより、圧密した夾雑物による「軸受」が形成され、従来は片持であったスクリュー2の軸部21が見かけ上両持で支持される。
The screw 2 is rotatably arranged inside the cylindrical screen 1, and a blade 22 is formed in a spiral shape on the outer peripheral portion of the shaft portion 21, and is driven by a motor 5 disposed on the base side of the shaft portion 21. It is rotated at a predetermined rotational speed.
The tip end side of the screw 2 is extended so that only the shaft portion 21 penetrates the consolidation zone 3, and the shaft portion 21 is pivotally supported by the contaminant S consolidated in the consolidation zone 3.
In this way, by extending the shaft portion 21 of the screw 2 to the consolidation zone 3, the compacted contaminant S is inevitably formed around the shaft portion 21 that is extended. As a result, a “bearing” is formed by the compacted contaminants, and the shaft portion 21 of the screw 2 that is conventionally cantilevered is apparently supported by both ends.

かくして、本実施例のスクリュープレス脱水機は、円筒形スクリーン1の内部にスクリュー2を回転可能に配設するとともに、円筒形スクリーン1の先端部に、スクリュー2により搬送された夾雑物を圧密する圧密ゾーン3を設けたスクリュープレス脱水機において、スクリュー2の軸部21を圧密ゾーン3の内部まで延設し、該軸部21を圧密ゾーン3で圧密した夾雑物Sにより枢支することから、スクリュー2の先端側にブラケットを用いることなく軸受を形成することができ、これにより、モータ5側の軸受6の寿命を延ばすとともに、スクリュー2の回転を安定させることができる。
また、圧密した夾雑物Sによる軸受のため、仮に長期運転にて軸芯にずれが生じた場合でも、このずれでできた軸部21と軸受の隙間はただちに夾雑物Sにより埋められることになり、構造的な変化に追従することができる。
Thus, in the screw press dehydrator of the present embodiment, the screw 2 is rotatably disposed inside the cylindrical screen 1 and the foreign matter conveyed by the screw 2 is consolidated at the tip of the cylindrical screen 1. In the screw press dehydrator provided with the consolidation zone 3, the shaft portion 21 of the screw 2 is extended to the inside of the consolidation zone 3, and the shaft portion 21 is pivotally supported by the contaminant S consolidated in the consolidation zone 3. A bearing can be formed without using a bracket on the distal end side of the screw 2, thereby extending the life of the bearing 6 on the motor 5 side and stabilizing the rotation of the screw 2.
Further, since the bearing is made of the compacted contaminant S, even if the shaft core is displaced during a long-term operation, the gap between the shaft portion 21 and the bearing formed by this displacement is immediately filled with the contaminant S. Can follow structural changes.

以上、本発明のスクリュープレス脱水機について、実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、夾雑物以外を脱水処理物とするなど、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   As described above, the screw press dehydrator of the present invention has been described based on the examples. However, the present invention is not limited to the configuration described in the above examples, The configuration can be changed as appropriate without departing from the spirit of the invention.

本発明のスクリュープレス脱水機は、ブラケットを用いることなくスクリューの先端側に軸受を形成することにより、モータ側の軸受の寿命を延ばすとともに、スクリューの回転を安定させるという特性を有していることから、下水分野における脱水処理の他、例えば、食品分野における脱水処理にも好適に用いることができる。   The screw press dehydrator of the present invention has the characteristics of extending the life of the bearing on the motor side and stabilizing the rotation of the screw by forming the bearing on the tip side of the screw without using a bracket. In addition to the dehydration treatment in the sewage field, for example, it can be suitably used for the dehydration treatment in the food field.

本発明のスクリュープレス脱水機の一実施例を示す断面図である。It is sectional drawing which shows one Example of the screw press dehydrator of this invention. 従来のスクリュープレス脱水機を示す断面図である。It is sectional drawing which shows the conventional screw press dehydrator.

符号の説明Explanation of symbols

1 円筒形スクリーン
2 スクリュー
21 軸部
22 羽根
3 圧密ゾーン
4 背圧板
5 モータ
6 モータ側の軸受
S 圧密した夾雑物
DESCRIPTION OF SYMBOLS 1 Cylindrical screen 2 Screw 21 Shaft part 22 Blade | wing 3 Consolidation zone 4 Back pressure plate 5 Motor 6 Motor side bearing S Consolidation foreign matter

Claims (1)

円筒形スクリーンの内部にスクリューを回転可能に配設するとともに、円筒形スクリーンの先端部に、スクリューにより搬送された脱水処理物を圧密する圧密ゾーンを設けたスクリュープレス脱水機において、スクリューの軸部を圧密ゾーンの内部まで延設し、該軸部を圧密ゾーンで圧密した脱水処理物により枢支するようにしたことを特徴とするスクリュープレス脱水機。   In a screw press dehydrator in which a screw is rotatably disposed inside a cylindrical screen and a compaction zone for compacting a dehydrated material conveyed by the screw is provided at the tip of the cylindrical screen. A screw press dehydrator characterized in that the shaft portion is extended to the inside of the consolidation zone and the shaft is pivotally supported by a dewatered product consolidated in the consolidation zone.
JP2007126390A 2007-05-11 2007-05-11 Screw press dehydrator Withdrawn JP2008279484A (en)

Priority Applications (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258196A (en) * 1988-11-03 1990-10-18 Fan Eng Gmbh Method for separating solids suspended in wastewater and compression screw separator
JPH1071494A (en) * 1996-08-29 1998-03-17 Asahi Sangyo Kk Screw press device
JP2004267995A (en) * 2003-03-12 2004-09-30 Hitachi Kiden Kogyo Ltd Equipment for removing and dewatering contaminants in sewage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258196A (en) * 1988-11-03 1990-10-18 Fan Eng Gmbh Method for separating solids suspended in wastewater and compression screw separator
JPH1071494A (en) * 1996-08-29 1998-03-17 Asahi Sangyo Kk Screw press device
JP2004267995A (en) * 2003-03-12 2004-09-30 Hitachi Kiden Kogyo Ltd Equipment for removing and dewatering contaminants in sewage

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