Title:
VENT VALVE AND PIPING STRUCTURE
Document Type and Number:
Japanese Patent JP2015232369
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a vent valve capable of dissolving a negative pressure in a piping material more rapidly and positively.SOLUTION: A vent valve of this invention comprises a vent valve main body having a connection port and a vent port; a valve shaft axially extending within the vent valve main body; a valve body moved from a closed position of the vent port to its released position along an axial direction of the valve shaft; the first magnet connected to the valve body; the second magnet movably supported along the valve shaft at a position spaced apart from the first magnet and biasing the valve body to the closed position in repelling against the first magnet at its initial position; and a returning means for returning the second magnet to the initial position. As the piping material shows a negative pressure, the first magnet is moved toward the second magnet as the valve body moves and at the same time the second magnet is moved from the first magnet in a spacing-apart direction along the valve shaft, thereby the valve body is arranged at the releasing position. As the negative pressure in the piping material is dissolved, the returning means returns the second magnet to the initial position, the valve body is biased to the closed position with repulsive force between the first magnet and the second magnet to close the vent valve.
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Inventors:
MATSUDA SHOHEI
KAWAMURA YUICHI
KAWAMURA YUICHI
Application Number:
JP2014119400A
Publication Date:
December 24, 2015
Filing Date:
June 10, 2014
Export Citation:
Assignee:
MIRAI IND
International Classes:
F16K24/06; E03C1/122; F16L55/07
Domestic Patent References:
| JP2011236949A | 2011-11-24 | |||
| JPS56134675A | 1981-10-21 | |||
| JP2012062955A | 2012-03-29 | |||
| JP2009299866A | 2009-12-24 | |||
| JPH0444568U | 1992-04-15 | |||
| JPS49142025U | 1974-12-06 |
Attorney, Agent or Firm:
Hiroe Associates Patent Office
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