| 摘要 |
PROBLEM TO BE SOLVED: To provide a lever float type drain trap capable of preventing damage of a float. SOLUTION: A casing having a valve chamber 6 inside is constituted by fastening a cover body 4 to a body 3 having an inlet 1 and an outlet 2. A first valve port 7 and a second valve port 8, connecting the valve chamber 6 with the outlet 2, are formed in a lower part of the valve chamber 6. A lever 13 is coupled to a rocking shaft 12 rotatably supported in a support hole 11 in the valve chamber 6. A float 14 floating and lowering in response to a liquid level in the valve chamber 6 is coupled to the lever 13, and a first valve element 20 and a second valve element 21, opening and closing the first valve port 7 and the second valve port 8, are coupled to the lever 13. The rocking shaft 12 is formed in a triangle cross sectional shape, and one vertex of the triangle is coupled to the lever 13 toward the center of the float 14. In the support hole 11, an upper stopper surface 22 is formd on which the upper surface of the rocking shaft 12 abuts when the lever 13 is further rotated in the valve closing direction from a position for closing the first valve port 7 and the second valve port 8 by the first valve element 20 and the second valve element 21. COPYRIGHT: (C)2009,JPO&INPIT
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