JPS63143913U

JPS63143913U -

Info

Publication number: JPS63143913U
Application number: JP3505087U
Authority: JP
Priority date: 1987-03-10
Filing date: 1987-03-10
Publication date: 1988-09-21
Anticipated expiration: 2002-03-10
Also published as: JP2509125Y2

Description

[Brief explanation of the drawing]

第１図乃至第１０図は本考案の実施例を示すも
ので、第１図は水中ポンプを設置した液槽の断面
図、第２図は制御回路図、第３図は水位変動チヤ
ート、第４図乃至第９図は水位変動に伴う制御回
路の状態変化を示す作用説明図、第１０図は制御
回路の変更例を示す第２図相当の制御回路図であ
る。第１１図は従来の水位制御装置に採用した第
２図相当の制御回路図である。図中、１０は液槽、１２は水中ポンプ、１２ａ
は電動機、１４・１５・１６は上限水位・中間水
位・下限水位検出用フロートスイツチ、１４ａ・
１５ａ・１６ａは上限水位スイツチ・中間水位ス
イツチ・下限水位スイツチ、２１はリレー、２２
はタイマー、ＨＬは上限水位、ＭＬは中間水位、
ＬＬは下限水位である。 Figures 1 to 10 show examples of the present invention. Figure 1 is a sectional view of a liquid tank in which a submersible pump is installed, Figure 2 is a control circuit diagram, Figure 3 is a water level fluctuation chart, and Figure 3 is a diagram of a water level fluctuation chart. 4 to 9 are operation explanatory diagrams showing changes in the state of the control circuit due to water level fluctuations, and FIG. 10 is a control circuit diagram corresponding to FIG. 2 showing a modification of the control circuit. FIG. 11 is a control circuit diagram corresponding to FIG. 2 adopted in a conventional water level control device. In the figure, 10 is a liquid tank, 12 is a submersible pump, 12a
is an electric motor, 14, 15, and 16 are float switches for detecting upper limit water level, intermediate water level, and lower limit water level, and 14a.
15a and 16a are upper limit water level switch, intermediate water level switch, and lower limit water level switch, 21 is a relay, 22
is the timer, HL is the upper limit water level, ML is the intermediate water level,
LL is the lower limit water level.

Claims

[Scope of utility model registration request]

A pump driving electric motor is connected to the primary side of the transformer, and a switch for starting the upper limit water level of the upper limit water level detection means is connected.
In the water level control device, a lower limit water level stop switch of the lower limit water level detection means and a relay are connected in series to the secondary side of the transformer, and drive control of the electric motor is performed by deenergizing and energizing the relay. A timer that starts when the pump stops operating is connected to the electric motor, and a timer contact of the timer and an intermediate water level starting switch of the intermediate water level detection means are connected in series with each other and in parallel with the upper limit water level starting switch. A water level control device characterized by: