JPH11290722A - Centrifugal separator provided with power recovery function - Google Patents

Centrifugal separator provided with power recovery function

Info

Publication number
JPH11290722A
JPH11290722A JP10098022A JP9802298A JPH11290722A JP H11290722 A JPH11290722 A JP H11290722A JP 10098022 A JP10098022 A JP 10098022A JP 9802298 A JP9802298 A JP 9802298A JP H11290722 A JPH11290722 A JP H11290722A
Authority
JP
Japan
Prior art keywords
bowl
separated water
discharge port
water discharge
impeller
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.)
Granted
Application number
JP10098022A
Other languages
Japanese (ja)
Other versions
JP4007674B2 (en
Inventor
Hiroyuki Matsui
寛幸 松井
Yasuyuki Yoshida
泰之 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP09802298A priority Critical patent/JP4007674B2/en
Publication of JPH11290722A publication Critical patent/JPH11290722A/en
Application granted granted Critical
Publication of JP4007674B2 publication Critical patent/JP4007674B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2075—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with means for recovering the energy of the outflowing liquid

Abstract

PROBLEM TO BE SOLVED: To recover the kinetic energy of separated water discharged from a bowl to return the recovered power to a main motor. SOLUTION: The bowl 3 for solid-liquid separating by rotating around the axis to impart centrifugal force to a material to be treated, which is charged inside, is provide a separated water discharge port 9 for discharging the separated water A is provided on one side wall in the axis direction of the bowl 3, a wheel 12 arranged to face the separated water discharge port 9 is provided freely rotatably around the coaxis with the bowl 3, plural blades 13 receiving the separated water A scattered from the separated water discharge port 9 is provided on the wheel 12 and a power generator is connected to the rotary shaft of the wheel 12.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、下水、し尿および
水の処理において固液分離に使用するスクリューデカン
タ形等の遠心分離機に係り、分離水の持つ運動エネルギ
ーを電力として回収する電力回収機能を備えた遠心分離
機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifuge such as a screw decanter type used for solid-liquid separation in the treatment of sewage, human waste and water, and a power recovery function for recovering kinetic energy of separated water as power. And a centrifuge comprising:

【０００２】[0002]

【従来の技術】従来、し尿処理や下水処理を行なう汚水
処理場や水処理施設においては、被処理水の固液を分離
するために、遠心分離機を使用している。遠心分離機
は、ボウルの回転により、ボウル内に投入した被処理水
に遠心力を与え、比重差により固液を分離している。2. Description of the Related Art Conventionally, in a sewage treatment plant or a water treatment facility which performs human waste treatment or sewage treatment, a centrifuge is used to separate solid and liquid of water to be treated. The centrifugal separator applies centrifugal force to the water to be treated put into the bowl by rotation of the bowl, and separates solid and liquid by a difference in specific gravity.

【０００３】[0003]

【発明が解決しようとする課題】遠心分離機は、被処理
水に対して通常で２０００〜２５００Ｇの遠心力を与え
るために、ボウルを高速で回転する必要があり、他の固
液分離法に比して消費エネルギーが大きくなる傾向があ
った。遠心分離機における消費電力は、ボウルの運動エ
ネルギーと、分離した固形分の運動エネルギーと、分離
水の運動エネルギーとなり、固形分および分離水は運動
エネルギーを伴ってボウルの外部へ排出する。このう
ち、量的に最も多い分離水の運動エネルギーが非常に大
きく、ボウルから排出する分離水が有する運動エネルギ
ーを回収すれば消費電力を低減することができる。The centrifugal separator needs to rotate the bowl at a high speed in order to give a centrifugal force of usually 2000 to 2500 G to the water to be treated. Energy consumption tended to be larger than that. The power consumption in the centrifuge is the kinetic energy of the bowl, the kinetic energy of the separated solid, and the kinetic energy of the separated water, and the solid and the separated water are discharged to the outside of the bowl with the kinetic energy. Among them, the kinetic energy of the separated water, which is the largest in quantity, is very large, and the power consumption can be reduced by collecting the kinetic energy of the separated water discharged from the bowl.

【０００４】本発明は上記した課題を解決するものであ
り、ボウルから排出する分離水の運動エネルギーを電力
として回収し、回収した電力を主電動機へ回生する電力
回収機能を備えた遠心分離機を提供することを目的とす
る。The present invention has been made to solve the above-mentioned problem, and there is provided a centrifugal separator having a power recovery function for recovering kinetic energy of separated water discharged from a bowl as power and regenerating the recovered power to a main motor. The purpose is to provide.

【０００５】[0005]

【課題を解決するための手段】上記した課題を解決する
ために、本発明の電力回収機能を備えた遠心分離機は、
軸心廻りに回転して内部に投入した被処理物に遠心力を
付与して固液分離するボウルを設け、ボウルの軸心方向
の一側壁に分離水を排出する分離水排出口を設け、分離
水排出口に対向して配置する羽根車をボウルと同軸心廻
りに回転自在に設け、羽根車に分離水排出口から飛散す
る分離水を受け止める複数の羽根を設け、羽根車の回転
軸に発電機を連結したものである。In order to solve the above-mentioned problems, a centrifuge having a power recovery function according to the present invention comprises:
A bowl is provided which rotates around the axis and applies a centrifugal force to the object put into the inside to separate the liquid and solid, and a side wall in the axial direction of the bowl is provided with a separated water discharge port for discharging the separated water, An impeller arranged opposite to the separated water discharge port is rotatably provided around the coaxial center with the bowl, and the impeller is provided with a plurality of blades for receiving separated water scattered from the separated water discharge port. It is a combination of generators.

【０００６】また、発電機の出力側を、ボウルを回転駆
動する主電動機の入力側に接続したものである。上記し
た構成により、ボウルの回転により遠心力を受ける被処
理物は、比重差によってボウルの径方向に分離し、比重
の大きい固形分がボウルの内周面側に沈降し、比重の軽
い分離水がボウルの軸心側に浮遊する。[0006] The output side of the generator is connected to the input side of a main motor for rotating the bowl. With the above-described configuration, the object to be processed, which is subjected to centrifugal force due to the rotation of the bowl, separates in the radial direction of the bowl due to a difference in specific gravity, solids having a large specific gravity settle on the inner peripheral surface side of the bowl, and separated water having a low specific gravity Floats on the axial side of the bowl.

【０００７】分離水は、ボウルの一側壁に開口する分離
水排出口を越流してボウルの外部へ流出する。このと
き、分離水は遠心力を受けて運動エネルギーを有するの
で、分離水排出口から流出した分離水は、ボウルの径方
向へ飛散して羽根車の羽根に衝突する。羽根車は分離水
の衝突により運動エネルギーを受けて回転し、発電機を
駆動する。したがって、分離水の有する運動エネルギー
を電力して回収することができる。[0007] The separated water overflows the separated water discharge port opened on one side wall of the bowl and flows out of the bowl. At this time, since the separated water has kinetic energy by receiving centrifugal force, the separated water flowing out of the separated water discharge port scatters in the radial direction of the bowl and collides with the blade of the impeller. The impeller rotates by receiving kinetic energy due to the impact of the separated water, and drives the generator. Therefore, the kinetic energy of the separated water can be recovered by power.

【０００８】また、回収した電力を主電動機に回生する
ことにより、主電動機における消費電力を低減すること
ができる。Further, by recovering the recovered electric power to the main motor, the power consumption of the main motor can be reduced.

【０００９】[0009]

【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。図１〜図２において、スクリューデ
カンタ形の遠心分離機１は、回転軸２の軸心廻りに回転
するボウル３とボウル３の内部に格納したスクリュー４
とを有しており、ボウル３とスクリュー４は作動機構
（図示省略）により所定の回転差をもって回転する。回
転軸２はプーリー５およびベルト６を介して減速機７に
連結しており、減速機７は主電動機８に連結している。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, a screw decanter-type centrifugal separator 1 includes a bowl 3 rotating around an axis of a rotating shaft 2 and a screw 4 stored inside the bowl 3.
The bowl 3 and the screw 4 rotate with a predetermined rotation difference by an operating mechanism (not shown). The rotating shaft 2 is connected to a speed reducer 7 via a pulley 5 and a belt 6, and the speed reducer 7 is connected to a main motor 8.

【００１０】ボウル３は、軸心方向の一方側に位置する
一側壁３ａに分離水Ａを排出するための分離水排出口９
が開口し、漸次に径が縮径する他方側に位置する他側壁
３ｂに固形分Ｂを排出するための固形物排出口１０が開
口している。スクリュー４は、胴部４ａの周囲にスクリ
ュー羽根４ｂを有し、被処理水である汚泥Ｃを供給する
ための給泥管１１を胴部４ａに挿通しており、給泥管１
１はボウル３の他側壁３ｂを貫通する基端側が軸心方向
に向けて開口し、先端側が胴部４ａの径方向に向けてボ
ウル３の内部で開口している。The bowl 3 has a separated water discharge port 9 for discharging the separated water A to one side wall 3a located on one side in the axial direction.
Are opened, and a solid discharge port 10 for discharging the solid matter B is opened to the other side wall 3b located on the other side where the diameter gradually decreases. The screw 4 has a screw blade 4b around the body 4a, and a sludge supply pipe 11 for supplying sludge C, which is water to be treated, is inserted through the body 4a.
Reference numeral 1 denotes a base end side penetrating the other side wall 3b of the bowl 3 opening in the axial direction, and a distal end side opening inside the bowl 3 in the radial direction of the body 4a.

【００１１】ボウル３の一側壁３ａの近傍には、羽根車
１２を分離水排出口９に対向して配置しており、羽根車
１２は回転軸２と同軸心廻りに回転自在に設けている。
羽根車１２はホイール部１２ａに複数の羽根１３を有し
ている。羽根車１２はボス部１２ｂに固定したプーリー
１５およびベルト１６を介して発電機１７に連結してい
る。In the vicinity of one side wall 3a of the bowl 3, an impeller 12 is disposed so as to face the separated water discharge port 9, and the impeller 12 is rotatably provided around a coaxial center with the rotating shaft 2. .
The impeller 12 has a plurality of blades 13 on a wheel portion 12a. The impeller 12 is connected to a generator 17 via a pulley 15 and a belt 16 fixed to the boss 12b.

【００１２】以下、上記した構成における作用を説明す
る。ボウル３およびスクリュー４は主電動機８の駆動に
より、所定の回転差をもって回転し、給泥管１１を通し
てボウル３の内部に投入する汚泥Ｃに遠心力を与える。
ボウル３の内部で遠心力を受ける汚泥Ｃは、比重差によ
ってボウル３の径方向に分離し、比重の大きい固形分Ｂ
がボウル３の内周面側に沈降し、比重の軽い分離水Ａが
ボウル３の軸心側に浮遊する。The operation of the above configuration will be described below. The bowl 3 and the screw 4 are rotated by a predetermined rotation difference by the driving of the main motor 8, and give a centrifugal force to the sludge C to be put into the bowl 3 through the mud feed pipe 11.
The sludge C subjected to centrifugal force inside the bowl 3 separates in the radial direction of the bowl 3 due to a difference in specific gravity, and solids B having a large specific gravity
Settles on the inner peripheral surface side of the bowl 3, and the separated water A having a low specific gravity floats on the axial center side of the bowl 3.

【００１３】固形分Ｂはボウル３に対するスクリュー４
の相対的な回転によって他側壁３ｂの側に移動し、固形
物排出口１０からボウル３の外部へ掻き出される。一
方、分離水Ａは、ボウル３の分離水排出口９を越流して
ボウル３の外部へ流出する。このとき、分離水Ａは遠心
力を受けて運動エネルギーを有するので、分離水排出口
９から流出した分離水Ａは、ボウル３の径方向へ飛散
し、羽根１３に衝突する。The solid content B is supplied to the screw 4
Is moved to the side of the other side wall 3b by the relative rotation of, and is scraped out of the bowl 3 from the solid discharge port 10. On the other hand, the separated water A overflows the separated water discharge port 9 of the bowl 3 and flows out of the bowl 3. At this time, the separated water A has kinetic energy due to the centrifugal force, and thus the separated water A flowing out of the separated water discharge port 9 scatters in the radial direction of the bowl 3 and collides with the blade 13.

【００１４】羽根車１２は、分離水Ａの衝突により運動
エネルギーを受けて回転し、発電機１７を駆動する。こ
の発電機１７で発生した電力は主電動機８に回生する。The impeller 12 rotates by receiving kinetic energy due to the collision of the separated water A, and drives the generator 17. The electric power generated by the generator 17 is regenerated to the main motor 8.

【００１５】[0015]

【発明の効果】以上述べたように、本発明によれば、ボ
ウルから飛散する分離水を羽根車で受け止め、羽根車の
回転により発電機を駆動することにより、分離水の持つ
運動エネルギーを電力として回収することができ、回収
した電力を主電動機に回生することにより消費電力を低
減することができる。As described above, according to the present invention, the separated water scattered from the bowl is received by the impeller, and the generator is driven by the rotation of the impeller, so that the kinetic energy of the separated water is converted into electric power. The power consumption can be reduced by regenerating the recovered electric power to the main motor.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施の形態における遠心分離機を示す
摸式図である。FIG. 1 is a schematic diagram showing a centrifuge according to an embodiment of the present invention.

【図２】同遠心分離機における羽根車の正面図である。FIG. 2 is a front view of an impeller in the centrifuge.

【符号の説明】[Explanation of symbols]

１ 遠心分離機 ２ 回転軸 ３ ボウル ４ スクリュー ８ 主電動機 ９ 分離水排出口 １０ 固形物排出口 １１ 給泥管 １２ 羽根車 １３ 羽根 １４ ガイド Ａ 分離水 Ｂ 固形分 Ｃ 汚泥 DESCRIPTION OF SYMBOLS 1 Centrifugal separator 2 Rotating shaft 3 Bowl 4 Screw 8 Main motor 9 Separation water discharge port 10 Solid discharge port 11 Mud supply pipe 12 Impeller 13 Blade 14 Guide A Separation water B Solid content C Sludge

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 軸心廻りに回転して内部に投入した被処
理物に遠心力を付与して固液分離するボウルを設け、ボ
ウルの軸心方向の一側壁に分離水を排出する分離水排出
口を設け、分離水排出口に対向して配置する羽根車をボ
ウルと同軸心廻りに回転自在に設け、羽根車に分離水排
出口から飛散する分離水を受け止める複数の羽根を設
け、羽根車の回転軸に発電機を連結したことを特徴とす
る電力回収機能を備えた遠心分離機。1. A separation water rotating around an axis and applying a centrifugal force to an object to be processed and solid-liquid separation is provided, and separated water is discharged to one side wall of the bowl in the axial direction. A discharge port is provided, an impeller disposed opposite to the separated water discharge port is rotatably provided around a coaxial center with the bowl, and the impeller is provided with a plurality of blades for receiving separated water scattered from the separated water discharge port. A centrifuge having a power recovery function, wherein a generator is connected to a rotating shaft of a car. 【請求項２】 発電機の出力側を、ボウルを回転駆動す
る主電動機の入力側に接続したことを特徴とする請求項
１に記載の電力回収機能を備えた遠心分離機。2. The centrifugal separator according to claim 1, wherein an output side of the generator is connected to an input side of a main motor that drives the bowl to rotate.
JP09802298A 1998-04-10 1998-04-10 Centrifuge with power recovery function Expired - Fee Related JP4007674B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09802298A JP4007674B2 (en) 1998-04-10 1998-04-10 Centrifuge with power recovery function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09802298A JP4007674B2 (en) 1998-04-10 1998-04-10 Centrifuge with power recovery function

Publications (2)

Publication Number Publication Date
JPH11290722A true JPH11290722A (en) 1999-10-26
JP4007674B2 JP4007674B2 (en) 2007-11-14

Family

ID=14208271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09802298A Expired - Fee Related JP4007674B2 (en) 1998-04-10 1998-04-10 Centrifuge with power recovery function

Country Status (1)

Country Link
JP (1) JP4007674B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1121983A2 (en) * 2000-02-02 2001-08-08 Nuova M.A.I.P., Macchine Agricole Industriali Pieralisi S.P.A. Method and apparatus for the centrifugal extraction of the liquid component of a compound product with recovery of energy from the said liquid component
US7022061B2 (en) * 2002-10-15 2006-04-04 Andritz Ag Centrifuge discharge port with power recovery
JP2010179269A (en) * 2009-02-09 2010-08-19 Tomoe Engineering Co Ltd Centrifugal separator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422366A (en) * 1987-07-17 1989-01-25 Nippon Gesuido Jigyodan Differential rotating speed mechanism for horizontal automatic centrifugal separator
US5147277A (en) * 1991-03-19 1992-09-15 Baker Hughes Incorporated Power-efficient liquid-solid separating centrifuge
JPH07859A (en) * 1992-12-18 1995-01-06 Tsukishima Kikai Co Ltd Centrifugal concentrator
EP1121983A2 (en) * 2000-02-02 2001-08-08 Nuova M.A.I.P., Macchine Agricole Industriali Pieralisi S.P.A. Method and apparatus for the centrifugal extraction of the liquid component of a compound product with recovery of energy from the said liquid component

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422366A (en) * 1987-07-17 1989-01-25 Nippon Gesuido Jigyodan Differential rotating speed mechanism for horizontal automatic centrifugal separator
US5147277A (en) * 1991-03-19 1992-09-15 Baker Hughes Incorporated Power-efficient liquid-solid separating centrifuge
JPH07859A (en) * 1992-12-18 1995-01-06 Tsukishima Kikai Co Ltd Centrifugal concentrator
EP1121983A2 (en) * 2000-02-02 2001-08-08 Nuova M.A.I.P., Macchine Agricole Industriali Pieralisi S.P.A. Method and apparatus for the centrifugal extraction of the liquid component of a compound product with recovery of energy from the said liquid component

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1121983A2 (en) * 2000-02-02 2001-08-08 Nuova M.A.I.P., Macchine Agricole Industriali Pieralisi S.P.A. Method and apparatus for the centrifugal extraction of the liquid component of a compound product with recovery of energy from the said liquid component
EP1121983A3 (en) * 2000-02-02 2002-06-19 Nuova M.A.I.P., Macchine Agricole Industriali Pieralisi S.P.A. Method and apparatus for the centrifugal extraction of the liquid component of a compound product with recovery of energy from the said liquid component
US7022061B2 (en) * 2002-10-15 2006-04-04 Andritz Ag Centrifuge discharge port with power recovery
JP2010179269A (en) * 2009-02-09 2010-08-19 Tomoe Engineering Co Ltd Centrifugal separator

Also Published As

Publication number Publication date
JP4007674B2 (en) 2007-11-14

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