JPS6154444B2 - - Google Patents
Info
- Publication number
- JPS6154444B2 JPS6154444B2 JP53054275A JP5427578A JPS6154444B2 JP S6154444 B2 JPS6154444 B2 JP S6154444B2 JP 53054275 A JP53054275 A JP 53054275A JP 5427578 A JP5427578 A JP 5427578A JP S6154444 B2 JPS6154444 B2 JP S6154444B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- sand
- abnormal load
- time
- rotating
- 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.)
- Expired
Links
Landscapes
- Control Of Conveyors (AREA)
- Screw Conveyors (AREA)
Description
【発明の詳細な説明】
本発明は都市下水等の処理設備を構成するスク
リユウ式沈砂掻寄装置の運転方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a screw-type sand settling device that constitutes a treatment facility for urban sewage and the like.
第１図は従来から実施されている電動機を用い
たスクリユウ式沈砂掻寄装置の一例を示すもので
ある。 FIG. 1 shows an example of a conventional screw type sand raking device using an electric motor.
第１図において、スクリユウ式沈砂掻寄装置
は、沈砂池１の池底部２に設置されたスクリユウ
コンベヤを構成するスクリユウ３、電動機４、電
動機４の回転力をベベルギヤボツクス６を介して
スクリユウ３に伝達する回転竪軸５から構成され
ている。 In FIG. 1, the screw-type sand raking device transfers the rotational force of a screw 3, an electric motor 4, and the motor 4, which constitute a screw conveyor installed at the bottom 2 of a sand settling basin 1, to the screw 3 through a bevel gear box 6. It is composed of a rotating vertical shaft 5 that transmits information to the user.
このように構成されるスクリユウ式沈砂掻寄装
置において、下水が矢印Ａ方向から流入し、下水
中の砂等が池底部２に堆積すると、フロアー１ａ
に設置した電動機４を駆動し竪軸５を回転させ、
ベベルギヤボツクス６を介してスクリユウ３を回
転させる。スクリユウ３が駆動されると、池底部
２の沈砂は沈砂ビツト７に掻寄せられ、沈砂ビツ
ト７からサンドポンプ８により外部に排出される
のである。 In the screw type sand raking device configured as described above, when sewage flows in from the direction of arrow A and sand etc. in the sewage is deposited on the pond bottom 2, the floor 1a
Drives the electric motor 4 installed in the shaft to rotate the vertical shaft 5,
The screw 3 is rotated via the bevel gear box 6. When the screw 3 is driven, the sand on the pond bottom 2 is scraped up into the sand bit 7, and is discharged from the sand bit 7 to the outside by the sand pump 8.
しかしながら、沈砂池１の池底部２に堆積する
沈砂には、砂以外の異物が含まれている。このた
め、これら異物がスクリユウ３に噛み込んでスク
リユウ３に異常な負荷が発生することが多くあつ
た。この異常負荷対策としては、異常負荷が生じ
た時点で、スクリユウ３を手動で逆転させて噛み
込んだ異物の除去等を行なつていた。このため、
上記の操作は非常に労力を必要とするものであつ
た。 However, the sediment deposited on the bottom 2 of the settling basin 1 contains foreign matter other than sand. For this reason, these foreign objects often get caught in the screw 3, causing an abnormal load on the screw 3. As a countermeasure against this abnormal load, when the abnormal load occurs, the screw 3 is manually reversed to remove the trapped foreign matter. For this reason,
The above operation required a lot of effort.
本発明の目的は、スクリユウ部に異常負荷が生
じた場合に、その対策を自動的に行なうことがで
きるようにしたスクリユウ式沈砂掻寄装置を提供
することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a screw-type sand-settling device that can automatically take measures when an abnormal load occurs on the screw portion.
本発明は、スクリユウを正転させて沈砂を掻寄
せているときに、スクリユウに異常負荷が生じる
と自動的に一定時間スクリユウを逆転させ、その
後再びスクリユウを正転するようにしたスクリユ
ウ式沈砂掻寄装置の運転方法である。 The present invention is a screw-type sand scraper that automatically rotates the screw in the reverse direction for a certain period of time when an abnormal load occurs on the screw while raking up sediment by rotating the screw in the normal direction, and then rotates the screw in the normal direction again. This is a method of operating the stationary equipment.
以下本発明を実施例に基いて説明する。 The present invention will be explained below based on examples.
第２図及び第３図は本発明を実施するための装
置の概要を示す図で、第２図はスクリユウを電動
機で、第３図はスクリユウを油圧モーターで駆動
させる場合を示す。 2 and 3 are diagrams showing an outline of an apparatus for carrying out the present invention. FIG. 2 shows a case where the screw is driven by an electric motor, and FIG. 3 shows a case where the screw is driven by a hydraulic motor.
第２図は、電動機９の回転力を回転竪軸１０に
伝達し、さらにギヤボツクス１１を介してスクリ
ユウ１２に伝達するような構成である。そして、
スクリユウ１２の回転負荷を検出する手段として
電流スイツチ１３を電動機９の電源に接続する。
電源スイツチ１３は、スクリユウ１２を正転させ
ているときに沈砂中の異物のスクリユウ１２への
噛み込み、あるいはスクリユウ羽根の変形等によ
り異常な負荷が生じたとき、すなわち、電動機９
に予め設定された値以上の電流が流れたとき、電
動機９の電流を切り変えてタイマーの働きで一定
時間ほどスクリユウ１２を逆転させるようになつ
ている。 FIG. 2 shows a configuration in which the rotational force of an electric motor 9 is transmitted to a rotating vertical shaft 10 and further transmitted to a screw 12 via a gearbox 11. and,
A current switch 13 is connected to the power source of the electric motor 9 as a means for detecting the rotational load on the screw 12.
The power switch 13 is activated when an abnormal load occurs due to foreign matter caught in the screw 12 during sedimentation or deformation of the screw blades while the screw 12 is rotated in the normal direction.
When a current exceeding a preset value flows through the motor 9, the current of the motor 9 is switched and the screw 12 is reversed for a certain period of time by the action of a timer.
第３図は油圧ユニツト１４から供給される油圧
で駆動する油圧モーター１５によりスクリユウ１
２を回転させる構成を示す。そして、油圧ユニツ
ト１４と油圧モーター１５を結ぶ配管に圧力スイ
ツチ１６を接続する。圧力スイツチ１６は、スク
リユウ１２を正転させているときに沈砂中の異物
がスクリユウ１２に噛み込む等により異常負荷が
生じたとき、すなわち、油圧モーター１５に予め
設定された圧力値以上の油圧が供給されたとき
に、油圧ユニツト１４から油圧モーター１５への
油圧の流れを切り変えてタイマーの働きで一定時
間ほどスクリユウ１２を逆転させるようにする。 FIG. 3 shows the screw 1 being driven by a hydraulic motor 15 driven by hydraulic pressure supplied from a hydraulic unit 14.
2 shows a configuration for rotating the 2. Then, a pressure switch 16 is connected to a pipe connecting the hydraulic unit 14 and the hydraulic motor 15. The pressure switch 16 is activated when an abnormal load occurs due to foreign matter biting into the screw 12 during sedimentation while the screw 12 is rotating normally, that is, when the hydraulic pressure exceeds a preset pressure value in the hydraulic motor 15. When supplied, the flow of hydraulic pressure from the hydraulic unit 14 to the hydraulic motor 15 is switched so that the screw 12 is reversed for a certain period of time by the action of a timer.
このようにスクリユウ１２を一定時間逆転する
ことにより、スクリユウ１２に噛み込んだ異物を
除去することができ、これによりスクリユウ１２
を正常な状態で運転することができるようにな
る。 By reversing the screw 12 for a certain period of time in this way, foreign objects caught in the screw 12 can be removed.
be able to drive under normal conditions.
第４図は本発明の運転方法の一例を示す図で、
スクリユウ１２を正転Ａさせて沈砂を掻寄せてい
るときに、異物の噛み込み等によりスクリユウ１
２に異常負荷が生じ、電流スイツチ１３あるいは
圧力スイツチ１６が予め設定された値以上の電流
あるいは圧力を検出する（以下異常負荷という）
と、電流スイツチ１３あるいは圧力スイツチ１６
は予め設定されたｔ時間ほどスクリユウ１２を逆
転B1させる。ｔ時間スクリユウ１２を逆転B1さ
せた後、再びスクリユウ１２を正転A1させる。
このとき、電流スイツチ１３あるいは圧力スイツ
チ１６に異常負荷が検出されない場合は、スクリ
ユウ１２の正転A1を続行して沈砂の掻寄せを行
なう。一方、異常負荷が検出された場合には、再
びスクリユウ１２を一定時間ｔほど逆転B2させ
て再び正転A2させる。このとき、異常負荷が検
出されると再び逆転B3を繰り返すのである。そ
して本発明においては、上記のスクリユウ１２の
逆転回数Ｎを予め設定しておき、この回数Ｎだけ
逆転を繰り返しても異常負荷が解消されない場合
にはスクリユウ１２の運転を中止して、人手によ
り異常負荷の解消を行なう。 FIG. 4 is a diagram showing an example of the operating method of the present invention,
When the screw 12 is rotated forward A to scrape up sediment, the screw 1 may become stuck due to foreign matter getting caught.
2, an abnormal load occurs, and the current switch 13 or pressure switch 16 detects a current or pressure higher than a preset value (hereinafter referred to as abnormal load).
and current switch 13 or pressure switch 16
The screw 12 is reversed B1 for a preset time t. After the screw 12 is rotated in the reverse direction B1 for a time t, the screw 12 is again rotated in the forward direction A1 .
At this time, if no abnormal load is detected on the current switch 13 or the pressure switch 16, the normal rotation A1 of the screw 12 is continued to scrape up the sand. On the other hand, if an abnormal load is detected, the screw 12 is again rotated in the reverse direction B2 for a certain period of time t, and then rotated forward again A2 . At this time, if an abnormal load is detected, the reverse rotation B3 is repeated again. In the present invention, the number N of reversals of the screw 12 is set in advance, and if the abnormal load is not resolved even after repeating the reversals this number N, the operation of the screw 12 is stopped and the abnormality is manually detected. Eliminate the load.
なお、本発明においては上記スクリユウ１２の
逆転回数を決定する方法としては、タイマーを用
いて予め一定時間Ｔを設定し、このＴ時間内で異
常負荷が解消されない場合には、スクリユウ１２
の運転を中心する方法も採用できる。 In the present invention, as a method for determining the number of reversals of the screw 12, a timer is used to set a certain time T in advance, and if the abnormal load is not eliminated within this T time, the screw 12 is
A method that focuses on driving can also be adopted.
以上に説明した本発明は次の効果を有してい
る。 The present invention described above has the following effects.
スクリユウの回転に異常負荷が検出されても、
これを自動的に解消することができるので、装置
の故障を防止できるのみならず、装置の無人運転
が可能になる。 Even if an abnormal load is detected in the rotation of the screw,
Since this problem can be automatically resolved, not only can failure of the device be prevented, but also unmanned operation of the device is possible.
第１図はスクリユウ式沈砂掻寄装置の一例を示
す断面図、第２図及び第３図は本発明を実施する
ための装置を示す概略図、第４図は本発明の運転
方法を示す図である。
９：電動機、１２：スクリユウ、１３：電流ス
イツチ、１４：油圧ユニツト、１５：油圧モータ
ー、１６：油圧スイツチ。
FIG. 1 is a sectional view showing an example of a screw-type sand settling device, FIGS. 2 and 3 are schematic views showing the device for carrying out the present invention, and FIG. 4 is a diagram showing the operating method of the present invention. It is. 9: Electric motor, 12: Screw, 13: Current switch, 14: Hydraulic unit, 15: Hydraulic motor, 16: Hydraulic switch.
Claims (1)
したスクリユウ式沈砂掻寄装置のスクリユウ軸を
電動機または油圧モーターにより駆動運転する方
法において、スクリユウを正転して沈砂を掻き寄
せているとき正転負荷が予め設定した値よりも高
い間は、スクリユウの正転を止めて一定時間逆転
してはスクリユウを再び正転するように、スクリ
ユウの正逆転操作を繰り返し、この正逆転操作が
予定以上に続くと、スクリユウの回転を停止する
スクリユウ式沈砂掻寄装置の運転方法。1. In a method in which the screw shaft of a screw conveyor installed at the bottom of a sand settling basin is driven by an electric motor or a hydraulic motor, when the screw is rotated in the normal direction to scrape up the sediment, a normal rotation load is applied. While the value is higher than the preset value, the forward and reverse operation of the screw is repeated by stopping the forward rotation of the screw, rotating in reverse for a certain period of time, and then rotating the screw forward again, and this forward and reverse operation continues for longer than planned. and a method of operating a screw-type sand raking device that stops the rotation of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5427578A JPS54146073A (en) | 1978-05-08 | 1978-05-08 | Screw-system sand-sediment drawing device operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5427578A JPS54146073A (en) | 1978-05-08 | 1978-05-08 | Screw-system sand-sediment drawing device operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54146073A JPS54146073A (en) | 1979-11-14 |
| JPS6154444B2 true JPS6154444B2 (en) | 1986-11-22 |
Family
ID=12966013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5427578A Granted JPS54146073A (en) | 1978-05-08 | 1978-05-08 | Screw-system sand-sediment drawing device operation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54146073A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973092A (en) * | 1982-10-16 | 1984-04-25 | Yamato Scient Co Ltd | Pure water production equipment |
| JPS62205913A (en) * | 1986-03-04 | 1987-09-10 | Tsukishima Kikai Co Ltd | Screw conveyer device for conveying solid material |
| JPS631808U (en) * | 1986-06-19 | 1988-01-08 | ||
| JPS638112A (en) * | 1986-06-24 | 1988-01-13 | Sanyu Kogyo Kk | Chip conveyer |
| JPH021291U (en) * | 1988-06-14 | 1990-01-08 | ||
| JP2011050842A (en) * | 2009-09-01 | 2011-03-17 | Nisshin Steel Co Ltd | Method and apparatus for operating clarifier of waste liquid treatment equipment |
| JP6076183B2 (en) * | 2013-04-12 | 2017-02-08 | 日清エンジニアリング株式会社 | Operation method of powder storage tank device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593365B2 (en) * | 1977-07-11 | 1984-01-24 | 株式会社栗本鉄工所 | How to release overload from cooling system |
-
1978
- 1978-05-08 JP JP5427578A patent/JPS54146073A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54146073A (en) | 1979-11-14 |
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