JP2005292113A5 - - Google Patents

Claims (7)

In the water flow detection device that is installed on the fire extinguishing equipment piping and has a swing check type check valve structure inside, and detects water flow by the rotation angle of the valve body,
A cylindrical portion through which a shaft is inserted is provided at one end of a valve body in which a water stop member is installed on the valve seat contact surface, and an engaging portion is provided at one end of the cylindrical portion. A part of the hinge pin having the engaging means protrudes outside the main body of the water flow detecting device, and the rotation of the valve body is transmitted to the valve body rotation detecting means at the portion protruding outside the hinge pin. A flowing water detection device characterized in that a cam is installed. In the valve body, a shaft having a diameter slightly smaller than the inner diameter of the cylindrical portion is inserted from the opposite end where the engaging portion of the cylindrical portion is provided, and the shaft is provided to penetrate from the outside of the main body. Item 1. A water flow detection device according to item 1. The valve body rotating detecting means, the cam and the lever is driven by the rotation of the cam, a delay device by constantly lever activation means is held, and limit switch for outputting a signal to the outside The flowing water detection device according to claim 1, comprising: In the vicinity of the cam, water flow detection device according to claim 1, wherein Ru is provided a cam stopper. In the flowing water detection device that includes a main body installed on the fire extinguishing equipment piping and a valve body of a swing check type check valve structure, and detects flowing water by the rotation angle of the valve body,
The valve body is provided with a cylindrical portion along the rotation axis,
A first hinge pin that is inserted from one end of the cylindrical portion and pivotally supports the valve body;
A second hinge pin having an engaging means that engages with the other end side of the cylindrical portion so as to be able to rotate together with the rotation of the valve body,
The first hinge pin is inserted through the main body from the outside, and is screwed to the main body side so as to be detachable from the main body.
In the second hinge pin, the engaging means is detachably engaged with the other end side of the cylindrical portion, and the main body side end portion is connected to the valve body rotation detecting means for detecting the rotation of the valve body. A running water detection device characterized by The flowing water detection device according to claim 5, wherein an engagement portion that is detachably engaged with an engagement means of the second hinge pin is provided on the other end side of the cylindrical portion. 7. The running water detection according to claim 6, wherein the engaging portion of the cylindrical portion is a vertical groove provided in an axis crossing direction of the cylindrical portion, and the engaging means of the second hinge pin is a convex portion that enters and engages with the vertical groove. apparatus.