JP2009273979A - Human waste residue separation dehydrator - Google Patents

Human waste residue separation dehydrator Download PDF

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JP2009273979A
JP2009273979A JP2008125731A JP2008125731A JP2009273979A JP 2009273979 A JP2009273979 A JP 2009273979A JP 2008125731 A JP2008125731 A JP 2008125731A JP 2008125731 A JP2008125731 A JP 2008125731A JP 2009273979 A JP2009273979 A JP 2009273979A
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cylindrical screen
screw
residue
screen
dehydrator
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JP5143623B2 (en
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Takuya Ando
卓也 安東
Terukazu Araoka
輝一 新阜
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Hitachi Plant Technologies Ltd
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Hitachi Plant Technologies Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a human waste residue separation dehydrator whose numbers of revolutions of the cylindrical screen and the screw can be modified individually according to inflow loads different facility by facility. <P>SOLUTION: In the human residue separation dehydrator, a screw 2 carrying human waste residue is arranged within a cylindrical screen 1, and a back pressure resistance board 3 is disposed in the discharging portion of the cylindrical screen 1. Human waste residue is dehydrated under back pressure. The cylindrical screen 1 and the screw 2 are provided in a rotatable way, and a motor 4 rotating the cylindrical screen 1 and a motor 5 rotating the screw 2 are arranged separately so as to enable modification of the ratio of the rotational speeds of the cylindrical screen 1 and the screw 2 according to an inflow load. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、し渣と水を固液分離し、さらにし渣の脱水を行うし渣分離脱水機に関し、特に、施設毎に異なる流入負荷に応じて、円筒型スクリーンとスクリューの回転数を個別に変更することができるようにしたし渣分離脱水機に関するものである。   The present invention relates to a residue separation and dewatering machine that separates residue and water into solid and liquid, and further dewaters the residue, and in particular, the number of rotations of the cylindrical screen and the screw are individually set according to the inflow load that varies from facility to facility. The present invention relates to a residue separation and dehydrator.

下水処理場の汚水や汚泥中に含まれるごみはスクリーニングにより除去したままでは含水率が高く、またヘドロ状の汚物が付着することから、そのままでは処理処分が困難である。
そこで、このような含水率の高い処理物を連続的に脱水するものとしてし渣分離脱水機がある。
このし渣分離脱水機は、円筒型スクリーンの内部にし渣を搬送するスクリューを配設するとともに、該円筒型スクリーンの排出部に背圧板を設け、背圧によりし渣を脱水するようにしている。 Garbage contained in sewage and sludge from a sewage treatment plant has a high moisture content when removed by screening, and sludge adheres to it, making it difficult to dispose of it as it is.
Therefore, there is a residue separation and dehydrator that continuously dehydrates such a processed product having a high water content.
This screen separator dewatering machine is provided with a screw for transporting the screen inside the cylindrical screen, and a back pressure plate is provided at the discharge part of the cylindrical screen so that the screen is dehydrated by back pressure. .

ところで、本件出願人は、先に、図４に示す、円筒型スクリーン１とスクリュー２をそれぞれ回転可能に設けたし渣分離脱水機を提案している（特願２００７−３２０５６１参照）。
このし渣分離脱水機は、維持管理性の向上等を目的として、遊星歯車機構９１を使用することにより、１つのモータ９２で円筒型スクリーンとスクリューをそれぞれ回転させるようにしている。 By the way, the applicant of the present application has previously proposed a screen separator and dehydrator as shown in FIG. 4 in which a cylindrical screen 1 and a screw 2 are rotatably provided (see Japanese Patent Application No. 2007-320561).
This residue separator dehydrator uses a planetary gear mechanism 91 for the purpose of improving maintenance and management, and the like, and a single motor 92 rotates the cylindrical screen and the screw.

しかしながら、このし渣分離脱水機では、スクリューと円筒型スクリーンの速度比が構造的に固定されてしまい、例えば、流入負荷が増加し、円筒型スクリーンの清掃効果をあげたいときに、インバータ等で円筒型スクリーンの回転数を増加させると、スクリューの回転数も速度比に応じて増加してしまうため、運転動作バランスがとりにくいという問題があった。   However, in this screen separator and dewatering machine, the speed ratio between the screw and the cylindrical screen is fixed structurally. For example, when the inflow load increases and the cleaning effect of the cylindrical screen is desired, an inverter or the like is used. When the rotational speed of the cylindrical screen is increased, the rotational speed of the screw also increases in accordance with the speed ratio, so that there is a problem that it is difficult to balance the operation.

本発明は、上記従来のし渣分離脱水機が有する問題点に鑑み、施設毎に異なる流入負荷に応じて、円筒型スクリーンとスクリューの回転数を個別に変更することができるようにしたし渣分離脱水機を提供することを目的とする。   The present invention has been made in view of the above-described problems of the conventional screen separator and dewatering machine, and the screen screen can be individually changed in the number of rotations of the cylindrical screen and the screw according to the inflow load which varies from facility to facility. An object is to provide a separation dehydrator.

上記目的を達成するため、本発明のし渣分離脱水機は、円筒型スクリーンの内部にし渣を搬送するスクリューを配設するとともに、該円筒型スクリーンの排出部に背圧機構を設け、背圧によりし渣を脱水するし渣分離脱水機において、円筒型スクリーンとスクリューをそれぞれ回転可能に設けるとともに、円筒型スクリーンを回転させるモータと、スクリューを回転させるモータとを個別に設け、円筒型スクリーンとスクリューの速度比を流入負荷に応じて変更可能としたことを特徴とする。   In order to achieve the above object, the screen separator / dehydrator of the present invention is provided with a screw for transporting the screen inside the cylindrical screen, and a back pressure mechanism is provided at the discharge portion of the cylindrical screen. In the residue separating and dewatering machine, the cylindrical screen and the screw are rotatably provided, and the motor for rotating the cylindrical screen and the motor for rotating the screw are separately provided. The speed ratio of the screw can be changed according to the inflow load.

この場合において、円筒型スクリーンの周囲に密閉ケーシングを設けることができる。   In this case, a sealed casing can be provided around the cylindrical screen.

本発明のし渣分離脱水機によれば、円筒型スクリーンの内部にし渣を搬送するスクリューを配設するとともに、該円筒型スクリーンの排出部に背圧機構を設け、背圧によりし渣を脱水するし渣分離脱水機において、円筒型スクリーンとスクリューをそれぞれ回転可能に設けるとともに、円筒型スクリーンを回転させるモータと、スクリューを回転させるモータとを個別に設け、円筒型スクリーンとスクリューの速度比を流入負荷に応じて変更可能としたことから、施設毎に異なる流入負荷に対し、円筒型スクリーンとスクリューの回転数を個別に変更するようにして自由な運転設定が可能となる。
例えば、高濃度のし渣が流入してくるような施設の場合、目詰まりを防止するため円筒型スクリーンの回転数を増加させ、スクリーンの清掃を積極的に行う必要があるが、スクリーンとスクリューを連動させる従来の駆動方式では、速度比が固定されてしまうため、スクリューの回転数も同時に上昇し、し渣の搬送速度すなわち脱水時間も短縮されてしまい、十分にし渣が絞られないまま排出されてしまう。
これに対し、本発明のし渣分離脱水機では、円筒型スクリーンとスクリューの回転数を個別に変更するようにして自由な運転設定が可能となるため、一方の機能を維持したまま、もう一方の機能を向上させることが可能となり、結果的に設備に応じた効率的な運転が行えるようになる。 According to the screen separator dewatering machine of the present invention, a screw for transporting the screen is disposed inside the cylindrical screen, and a back pressure mechanism is provided at the discharge portion of the cylindrical screen so that the screen residue is dehydrated by back pressure. In the screen separator dehydrator, the cylindrical screen and the screw are rotatably provided, and the motor for rotating the cylindrical screen and the motor for rotating the screw are separately provided, and the speed ratio between the cylindrical screen and the screw is set. Since it can be changed according to the inflow load, it is possible to freely set the operation by changing the rotational speeds of the cylindrical screen and the screw individually for the inflow load that is different for each facility.
For example, in a facility where high-concentration residue is flowing in, it is necessary to increase the number of revolutions of the cylindrical screen to prevent clogging, and the screen must be actively cleaned. In the conventional drive system that interlocks the speed ratio, the speed ratio is fixed, so the rotation speed of the screw increases at the same time, and the transport speed of the residue, that is, the dewatering time is shortened. Will be.
On the other hand, in the residue separation and dehydrator of the present invention, it is possible to freely set the operation by changing the rotational speed of the cylindrical screen and the screw individually, so that while maintaining one function, the other As a result, it is possible to perform efficient operation according to the equipment.

また、円筒型スクリーンの周囲に密閉ケーシングを設けることにより、し渣の密閉搬送に対応した密閉型し渣分離脱水機とすることができる。   In addition, by providing a sealed casing around the cylindrical screen, a sealed-type residue separating and dewatering machine that can cope with the sealed conveyance of residue can be obtained.

以下、本発明のし渣分離脱水機の実施の形態を、図面に基づいて説明する。   Hereinafter, embodiments of the residue separating and dehydrating machine of the present invention will be described with reference to the drawings.

図１〜図２に、本発明のし渣分離脱水機の一実施例を示す。
このし渣分離脱水機は、円筒型スクリーン１の内部にし渣を搬送するスクリュー２を配設するとともに、該円筒型スクリーン１の排出部に背圧抵抗板３を設け、背圧によりし渣を脱水するようにしている。
そして、このし渣分離脱水機は、円筒型スクリーン１とスクリュー２をそれぞれ回転可能に設けるとともに、円筒型スクリーン１を回転させるモータ４と、スクリュー２を回転させるモータ５とを個別に設け、円筒型スクリーン１とスクリュー２の速度比を流入負荷に応じて変更することができるようにしている。 FIG. 1 to FIG. 2 show an embodiment of the residue separating and dehydrating machine of the present invention.
This screen separator dewatering machine is provided with a screw 2 for transporting the screen inside the cylindrical screen 1 and a back pressure resistor plate 3 provided at the discharge portion of the cylindrical screen 1 so that the screen residue is removed by back pressure. I try to dehydrate.
The residue separation and dehydrator is provided with a cylindrical screen 1 and a screw 2 so as to be rotatable, and a motor 4 for rotating the cylindrical screen 1 and a motor 5 for rotating the screw 2 are provided separately, The speed ratio between the mold screen 1 and the screw 2 can be changed according to the inflow load.

円筒型スクリーン１は、図３に示すように、平行筒状の固液分離部１１とテーパ状の脱水部１２とからなる。
円筒型スクリーン１は、固液分離部１１の水切スクリーンを、逆三角形の断面をした異形線を等間隔に並べてスリットを形成するウェッジワイヤ１３で構成することで、水抜性能の向上を図っている。
円筒型スクリーン１の上部には洗浄水ノズル７が配設されるとともに、円筒型スクリーン１の周囲には、し渣の密閉搬送に対応した密閉ケーシング８が設けられている。 As shown in FIG. 3, the cylindrical screen 1 includes a parallel cylindrical solid-liquid separation unit 11 and a tapered dewatering unit 12.
In the cylindrical screen 1, the draining screen of the solid-liquid separation unit 11 is configured with a wedge wire 13 that forms slits by arranging irregular lines having an inverted triangular cross section at equal intervals, thereby improving drainage performance. .
A washing water nozzle 7 is disposed on the upper part of the cylindrical screen 1, and a sealed casing 8 is provided around the cylindrical screen 1 to accommodate the hermetic transfer of residue.

密閉ケーシング８は、円筒型スクリーン１を周囲から遮蔽して防臭防音を図るものであり、水とし渣をスクリュー軸２１を介して円筒型スクリーン１の内部に流入させる一方、円筒型スクリーン１で脱水した水や洗浄ノズルの水を排水口８２から系外に排水する。
なお、水とし渣は、スクリュー軸２１の中空パイプ内を通り、流入口８１末端の長穴８１ａより円筒型スクリーン１の内部に流入する。
近年、ジェットポンプ等に代表されるし渣のパイプ密閉搬送方式が増加していることに鑑み、本実施例では流入口と密閉ケーシング８を設けることによって、このし渣分離脱水機を従来の「開放型」ではなく「密閉型」としている。 The hermetic casing 8 shields the cylindrical screen 1 from the surroundings to achieve deodorization and sound. Water and residue are allowed to flow into the cylindrical screen 1 through the screw shaft 21 while being dewatered by the cylindrical screen 1. The discharged water and the water from the cleaning nozzle are drained out of the system through the drain port 82.
The water and residue flow through the hollow pipe of the screw shaft 21 and flow into the cylindrical screen 1 through the long hole 81a at the end of the inlet 81.
In recent years, in view of the increasing number of pipe-seal-closed conveying systems represented by jet pumps, etc., in this embodiment, this type of separator-separating machine is provided by providing an inlet and a sealed casing 8. It is a “sealed type” instead of an “open type”.

し渣を搬送するスクリュー２は、円筒型スクリーン１のテーパ状の脱水部１２において、スクリューピッチを搬出部に向かうにしたがって漸次小さくし、圧密及びせん断効果を増幅させ、脱水性能を向上させている。
固液分離部１１で水と分離されたし渣は、スクリュー２により脱水部１２へと搬送され、次第に圧密されて、最終的に背圧抵抗板３の抵抗でプレス脱水され、脱水し渣として排出される。 In the tapered dewatering section 12 of the cylindrical screen 1, the screw 2 that transports the residue gradually reduces the screw pitch toward the unloading section, amplifies the consolidation and shear effects, and improves the dewatering performance. .
The residue separated from the water in the solid-liquid separation unit 11 is conveyed to the dehydration unit 12 by the screw 2, gradually consolidated, and finally press dehydrated by the resistance of the back pressure resistance plate 3, and dehydrated as residue. Discharged.

モータ４、５は、円筒型スクリーン１とスクリュー２のそれぞれに配設されており、軸受箱６３で支持された円筒型スクリーン１とスクリュー２は、チェーン６１とスプロケット６２を介して各モータ４、５により個々に駆動する。
従来では、円筒型スクリーン１とスクリュー２の速度比が固定されてしまうため、一方の回転数を増減させれば、もう一方もそれに連動して増減することとなるが、本実施例では、各モータ４、５は、図示省略する制御部により回転数を各々変更することができるようにしたため、円筒型スクリーン１とスクリュー２は個別に回転数を設定することが可能である。
なお、本実施例では、円筒型スクリーン１とスクリュー２は逆方向に回転するようにしているが、差速を設けて同方向に回転させることも可能である。 The motors 4 and 5 are respectively disposed on the cylindrical screen 1 and the screw 2, and the cylindrical screen 1 and the screw 2 supported by the bearing box 63 are connected to the motors 4 and 5 via the chain 61 and the sprocket 62. 5 to drive individually.
Conventionally, since the speed ratio between the cylindrical screen 1 and the screw 2 is fixed, if the number of rotations of one is increased or decreased, the other is also increased or decreased in conjunction with it. Since the motors 4 and 5 can each be changed in rotational speed by a control unit (not shown), the cylindrical screen 1 and the screw 2 can individually set the rotational speed.
In this embodiment, the cylindrical screen 1 and the screw 2 are rotated in the opposite directions, but it is also possible to provide a differential speed and rotate in the same direction.

かくして、本実施例のし渣分離脱水機は、円筒型スクリーン１の内部にし渣を搬送するスクリュー２を配設するとともに、該円筒型スクリーン１の排出部に背圧抵抗板３を設け、背圧によりし渣を脱水するし渣分離脱水機において、円筒型スクリーン１とスクリュー２をそれぞれ回転可能に設けるとともに、円筒型スクリーン１を回転させるモータ４と、スクリュー２を回転させるモータ５とを個別に設け、円筒型スクリーン１とスクリュー２の速度比を流入負荷に応じて変更可能としたことから、施設毎に異なる流入負荷に対し、円筒型スクリーン１とスクリュー２の回転数を個別に変更するようにして自由な運転設定が可能となる。
例えば、高濃度のし渣が流入してくるような施設の場合、目詰まりを防止するため円筒型スクリーン１の回転数を増加させ、スクリーンの清掃を積極的に行う必要があるが、円筒型スクリーン１とスクリュー２を連動させる従来の駆動方式では、速度比が固定されてしまうため、スクリュー２の回転数も同時に上昇し、し渣の搬送速度すなわち脱水時間も短縮されてしまい、十分にし渣が絞られないまま排出されてしまう。
これに対し、本発明のし渣分離脱水機では、円筒型スクリーン１とスクリュー２の回転数を個別に変更するようにして自由な運転設定が可能となるため、一方の機能を維持したまま、もう一方の機能を向上させることが可能となり、結果的に設備に応じた効率的な運転が行えるようになる。 Thus, the residue separating and dehydrating machine of the present embodiment is provided with the screw 2 for conveying the residue inside the cylindrical screen 1 and the back pressure resistance plate 3 provided at the discharge portion of the cylindrical screen 1. In the residue separating and dewatering machine, the cylindrical screen 1 and the screw 2 are rotatably provided, and the motor 4 for rotating the cylindrical screen 1 and the motor 5 for rotating the screw 2 are individually provided. Since the speed ratio between the cylindrical screen 1 and the screw 2 can be changed according to the inflow load, the rotational speed of the cylindrical screen 1 and the screw 2 is individually changed with respect to the inflow load that is different for each facility. In this way, free operation settings are possible.
For example, in a facility where high concentration of residue is flowing in, it is necessary to increase the number of revolutions of the cylindrical screen 1 to prevent clogging and to actively clean the screen. In the conventional drive system in which the screen 1 and the screw 2 are interlocked, the speed ratio is fixed, so the rotational speed of the screw 2 is also increased at the same time, and the transport speed of the residue, that is, the dewatering time is shortened. Will be discharged without being squeezed.
On the other hand, in the residue separating and dewatering machine of the present invention, since it is possible to freely set the operation by changing the rotational speeds of the cylindrical screen 1 and the screw 2 individually, while maintaining one function, The other function can be improved, and as a result, efficient operation according to the facility can be performed.

また、円筒型スクリーン１の周囲に密閉ケーシング８を設けることにより、し渣の密閉搬送に対応した密閉型し渣分離脱水機とすることができる。   Further, by providing the hermetic casing 8 around the cylindrical screen 1, it is possible to provide a hermetic type separator and dewatering machine corresponding to hermetic conveyance of the residue.

以上、本発明のし渣分離脱水機について、その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、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。   As mentioned above, although the residue separation dehydrator of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure suitably in the range which does not deviate from the meaning. Can be changed.

本発明のし渣分離脱水機は、施設毎に異なる流入負荷に応じて、円筒型スクリーンとスクリューの回転数を個別に変更することができることから、例えば、負荷に応じた効率的な運転が行えるし渣分離脱水機として広く好適に用いることができる。   The residue separation and dehydrator according to the present invention can individually change the rotational speed of the cylindrical screen and the screw according to the inflow load that varies from facility to facility. For example, the operation can be efficiently performed according to the load. It can be used widely and suitably as a residue separation and dehydrator.

本発明のし渣分離脱水機の一実施例を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Example of the residue separation dehydrator of this invention. 同一部断面平面図である。It is an identical part sectional top view. 同し渣分離脱水機を示し、（ａ）は円筒型スクリーンの軸方向の断面図、（ｂ）は同軸直交方向の断面図である。The same residue separation dehydrator is shown, in which (a) is a sectional view in the axial direction of a cylindrical screen, and (b) is a sectional view in the coaxial orthogonal direction. 従来のし渣分離脱水機を示す断面図である。It is sectional drawing which shows the conventional residue separation dehydrator.

符号の説明Explanation of symbols

１ 円筒型スクリーン
１１ 固液分離部
１２ 脱水部
１３ ウェッジワイヤ
２ スクリュー
２１ スクリュー軸
３ 背圧抵抗板
４ モータ
５ モータ
６１ チェーン
６２ スプロケット
６３ 軸受箱
７ 洗浄水ノズル
８ 密閉ケーシング
８１ 流入口
８２ 排水口 DESCRIPTION OF SYMBOLS 1 Cylindrical screen 11 Solid-liquid separation part 12 Dehydration part 13 Wedge wire 2 Screw 21 Screw shaft 3 Back pressure resistance plate 4 Motor 5 Motor 61 Chain 62 Sprocket 63 Bearing box 7 Washing water nozzle 8 Sealed casing 81 Inlet 82 Drain outlet

Claims (2)

円筒型スクリーンの内部にし渣を搬送するスクリューを配設するとともに、該円筒型スクリーンの排出部に背圧機構を設け、背圧によりし渣を脱水するし渣分離脱水機において、円筒型スクリーンとスクリューをそれぞれ回転可能に設けるとともに、円筒型スクリーンを回転させるモータと、スクリューを回転させるモータとを個別に設け、円筒型スクリーンとスクリューの速度比を流入負荷に応じて変更可能としたことを特徴とするし渣分離脱水機。   A screw for conveying the residue is provided inside the cylindrical screen, and a back pressure mechanism is provided at the discharge portion of the cylindrical screen to dehydrate the residue by back pressure. Each screw is provided so as to be rotatable, and a motor for rotating the cylindrical screen and a motor for rotating the screw are provided separately, and the speed ratio between the cylindrical screen and the screw can be changed according to the inflow load. A debris separator dehydrator. 円筒型スクリーンの周囲に密閉ケーシングを設けたことを特徴とする請求項１記載のし渣分離脱水機。   2. The residue separating and dewatering machine according to claim 1, wherein a sealed casing is provided around the cylindrical screen.
JP2008125731A 2008-05-13 2008-05-13 How to operate the residue separator dehydrator Expired - Fee Related JP5143623B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104646399A (en) * 2015-02-13 2015-05-27 王龙添 Oil-dreg separator
JP2017217618A (en) * 2016-06-09 2017-12-14 株式会社丸島アクアシステム Solid-liquid separator

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JP2002273114A (en) * 2001-03-21 2002-09-24 Ishigaki Co Ltd Screw press having concentration function
JP2003513805A (en) * 1999-11-09 2003-04-15 株式会社石垣 Screw press
JP2008055451A (en) * 2006-08-30 2008-03-13 Ishigaki Co Ltd Method for controlling operation of screw press
JP2008055450A (en) * 2006-08-30 2008-03-13 Ishigaki Co Ltd Operation control method for screw press
JP2009142723A (en) * 2007-12-12 2009-07-02 Hitachi Plant Technologies Ltd Apparatus for separating and dehydrating influent scum

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JP2003513805A (en) * 1999-11-09 2003-04-15 株式会社石垣 Screw press
JP2002273114A (en) * 2001-03-21 2002-09-24 Ishigaki Co Ltd Screw press having concentration function
JP2008055451A (en) * 2006-08-30 2008-03-13 Ishigaki Co Ltd Method for controlling operation of screw press
JP2008055450A (en) * 2006-08-30 2008-03-13 Ishigaki Co Ltd Operation control method for screw press
JP2009142723A (en) * 2007-12-12 2009-07-02 Hitachi Plant Technologies Ltd Apparatus for separating and dehydrating influent scum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104646399A (en) * 2015-02-13 2015-05-27 王龙添 Oil-dreg separator
JP2017217618A (en) * 2016-06-09 2017-12-14 株式会社丸島アクアシステム Solid-liquid separator

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