JPH0448472U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a wiring diagram of the main parts of an embodiment of this invention, Figure 2 is a wiring diagram of the main parts of a conventional automatic control device for an electric sewage drain valve, and Figure 3 is a wiring diagram of the same electric strainer and electric sewage drain. It is a piping system diagram of a valve. 2... Electric sewage drain valve, 5... Torque limit switch, 6... Limit switch, 8... Device for checking the operation of the torque limit switch, 1
0...Electric sewage drain valve control device, 11...Device that outputs when the torque limit switch is operated twice (
13...A device for controlling the torque limit switch in the direction opposite to the direction in which it operates (first means), 14...A device for confirming that control in the opposite direction has been completed (second means). In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] The actuation of the torque limit switch is memorized during control of either the opening direction or the closing direction of the electric sewage drain valve, and control is performed when the torque limit switch is actuated due to the actuation of the torque limit switch. a first means for executing control in a direction opposite to the direction; a second means for restarting control in the direction in which the torque limit switch was operated after the control in the opposite direction is completed; An automatic electrically operated sewage drain valve comprising: a third means for canceling open/close control and issuing an alarm output when the torque limit switch is operated twice in addition to the operation of the torque limit switch; Control device.