Title:
MULTI-POINT WATER LEVEL DETECTION FLOAT, AND AUTOMATIC OPERATION TYPE UNDERWATER PUMP USING THE SAME
Document Type and Number:
Japanese Patent JP2015045256
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an automatic operation type underwater pump capable of detecting plural water levels with one float switch without providing plural float switches.SOLUTION: In the automatic operation type underwater pump with a motor 3 as a prime mover, a first detection part 9A and a second detection part 9B for detecting a water level together with variation of a floating posture of a float 6 are provided in one float 6 tethered to the automatic operation type underwater pump so that the floating posture varies as the water level increases or decreases. According to water level detection results of the first detection part 9A and the second detection part 9B, the motor 3 is started at an operation water level h3, and the motor 3 is stopped at a stopping water level h2. At an abnormal water level h5, the motor 3 is configured to cope with an emergency operation.
Inventors:
MIYOSHI HIROYASU
FUKUDA MASAHIKO
FUKUDA MASAHIKO
Application Number:
JP2013176419A
Publication Date:
March 12, 2015
Filing Date:
August 28, 2013
Export Citation:
Assignee:
TSURUMI MFG
International Classes:
F04D15/00; F04D13/08
Domestic Patent References:
| JPH08111152A | 1996-04-30 | |||
| JPS5258801U | 1977-04-28 | |||
| JPS5083603U | 1975-07-17 | |||
| JPH0676664U | 1994-10-28 |
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