INTERNAL PILOT TYPE PRESSURE REGULATOR

摘要

An internal pilot type pressure regulator 10 reduces a pressure of compressed air supplied to a primary port 11 and causes it to flow out to a secondary port 12. The pressure of air which flows into the secondary port 12 is set by rotating a handle 61 so as to adjust a spring force which is added to a pilot diaphragm 49. When a bonnet 47, into which the pilot diaphragm 49 and a pressure regulating member 59 are incorporated, is inserted in a pressure regulating adapter 28 and then rotated, an outward projecting portion 71 abuts on an inward projecting portion 73 and is mounted. When a lock member 77 is inserted between the outward projecting portion 71 and the inward projecting portion 73, the pressure regulating adapter 28 is locked.

主权项

1. An internal pilot type pressure regulator comprising:
a port block which is formed with: a primary port to which compressed air is supplied; and a secondary port which communicates with the primary port via a first communication hole, pressure-regulated compressed air flowing out from the secondary port, wherein a main valve shaft provided with a main valve body which opens and closes the first communication hole is mounted in the first communication hole so as to be movable in an axial direction thereof; a pressure regulating adaptor which is detachably mounted on the port block, wherein a main valve diaphragm partitioning and forming a secondary pressure chamber communicating with the secondary port and a pilot pressure chamber on the other side is fixed between the pressure regulating adaptor and the port block; a bonnet which is provided with a cylindrical portion, wherein the bonnet is detachably mounted on a cylindrical mounting portion of the pressure regulating adaptor, a pilot diaphragm opening and closing a pilot valve body opening and closing a second communication hole causing the pilot pressure chamber and the primary port to communicate with each other, and a pressure regulating spring member regulating the pilot pressure in the pilot pressure chamber are incorporated in the cylindrical portion; an outward projecting portion which is provided on an outer peripheral surface of the cylindrical portion so as to project in a radially outward direction; an inward projecting portion which is provided so as to project in the cylindrical mounting portion, wherein when the bonnet is inserted in the pressure regulating adaptor in an axial direction thereof and then rotated, the inward projecting portion abuts on the outward projecting portion; and a lock member which is inserted in a gap under the condition that the outward projecting portion abuts on the inward projecting portion, wherein the gap is defined by a stopper provided on an inner surface of the cylindrical portion, the outward projecting portion, the cylindrical mounting portion, and the cylindrical portion.