JPS5939793U

JPS5939793U - Pump driving device

Info

Publication number: JPS5939793U
Application number: JP13499482U
Authority: JP
Inventors: 後藤　顕之輔
Original assignee: 株式会社明電舎
Priority date: 1982-09-06
Filing date: 1982-09-06
Publication date: 1984-03-14

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は下水処理場の返送汚泥用の配管系統に適用され
た従来のポンプの運転装置を示す構成図、第２図Ａは本
考案に係るポンプの運転装置の一実施例の構成図、第２
図Ｂは第２図Ａの下限制限器の特性図、第３図は流量に
対するポンプヘッドの特性図、第４図は第２図Ａに示さ
れる第１の調節装置の他の実施例を示す構成図である。１０・・・汚泥ポンプ井、１２・・・ポンプ、１４・・
・逆流防止弁と手動調節弁、１６・・・手動切換弁、１
８・・・流量測定器、２４・・・調節弁、３０・・・第
１の調節装置、３１・・・比率設定回路、３２・・・加
算回路、３３・・・調節計、３４・・・偏差値測定回路
、３５・・・出力回路、３５Ｔ□、　、３５Ｔ２・・・
タイマ、４０・・・第２の調節装置、４１・・・調節計
、４２・・・下限制限器、４３・・・電気量−空気量信
号変換器。FIG. 1 is a block diagram showing a conventional pump operating device applied to a piping system for return sludge of a sewage treatment plant, FIG. 2A is a block diagram of an embodiment of a pump operating device according to the present invention, Second
Figure B shows a characteristic diagram of the lower limit limiter in Figure 2A, Figure 3 shows a characteristic diagram of the pump head versus flow rate, and Figure 4 shows another embodiment of the first regulating device shown in Figure 2A. FIG. 10...Sludge pump well, 12...Pump, 14...
・Return prevention valve and manual control valve, 16...Manual switching valve, 1
8...Flow rate measuring device, 24...Control valve, 30...First regulating device, 31...Ratio setting circuit, 32...Addition circuit, 33...Controller, 34... - Deviation value measurement circuit, 35... Output circuit, 35T□, , 35T2...
Timer, 40... Second adjustment device, 41... Controller, 42... Lower limit limiter, 43... Electric quantity-air quantity signal converter.

Claims

[Scope of utility model registration request]

(1) In a pump operating device that determines the number of pumps in operation based on the amount of input change from a pump well and the measured amount of the pump control valve installation position, a ratio setting that multiplies the input change amount by a predetermined ratio means, addition means for reading and adding up each measured quantity at the pump control valve installation position, adjustment means for outputting an adjustment command based on each output of the ratio setting means and the addition manual, the ratio setting means and the force o'
a deviation value measuring means for determining the deviation value of the output of the means; and an output means for issuing a command to increase or decrease the number of pumps by one when the deviation value from the deviation value measuring means is greater than or equal to a predetermined value for a predetermined time. A first adjusting device built into the same device, and a second adjusting device including a lower limit setting device that sets a predetermined lower limit value to an adjustment command from the adjusting means of the first adjusting device. A pump driving device characterized by:

(2) The pump operating device according to claim 1, wherein the input change amount is at least one of inflow flow rate, suspended matter concentration, and pump well water level.

(3) The pump operating device according to claim 1, wherein the functions of each means of the first adjusting device are executed by a microcomputer.