Building fire sprinkler water pressure regulator

摘要

In the present invention, the branch pipe 70 so that water from the water storage tank or water directly from the water pipe is supplied at a constant pressure to the sprinkler head 80 installed at the end of the branch pipe 70 through the pipe pipe 100 and the joint 90 when a fire occurs. In the water pressure control device for building fire-fighting connected to the pipe, it is a rectangular parallelepiped that is divided into left and right and fastened and fixed by fastening bolts 19 at the front and rear upper and lower ends, and on the front and rear sides, the sprinkler head side branch pipe 72 and the joint side branch pipe, respectively. (71) The front and rear side tube holes 11 and 11a into which the tip is inserted are formed, respectively, and the inner diameter of the sprinkler head side branch tube 72 and the joint side branch tube 71 located in the front and rear side tube holes 11 and 11a and The front and rear side extension holes 12 and 12a that have the same inner diameter and horizontally extend inward are formed, respectively, and the front and rear side extension holes 12 and 12a extend upward and downward from the inner tip portion, respectively, and the upper front and rear extension slopes meet at the upper and lower sides of the center. 13, 13a) and the lower front and rear extended slopes 14 and 14a are formed, respectively, and the front and rear side tube holes 11 and 11a are recessed in upper and lower portions on the inner surface, and the front and rear side rectangular plate insertion recesses 15 formed in the shape of a square plate from the front , 15a) are formed, respectively, and in the center of the left and right inner surfaces, the vertices where the upper front and rear extended slopes 13 and 13a meet at the top and the vertices where the lower front and rear extended slopes 14 and 14a meet at the bottom are a vertical line by connecting an imaginary line Semi-circular expanding recesses 16 are respectively formed to form a semicircle from the center of this vertical line to the front side, and the rear horizontal extended recess 17 extending from the center of the rear side to the rear side is formed as a semi-circular expanded recess 16, respectively. Left and right water pressure control bodies (10, 10a) which are respectively formed, the upper and lower end packing grooves (18, 18a) respectively formed in recesses from the front end to the rear end of the upper and lower ends; It has a "◇" shape from the side and is rectangular on the front and flat bottom surfaces. The adjuster body 21 is formed with lower front and rear inclined surfaces 21c and 21d that form the same inclined surface as the front and rear extended slopes 14 and 14a, and in the center of the left and right side surfaces of the adjuster body 21, a semi-circular expansion recess 16 is formed. Left and right vertical thin plate springs (22, 22a), which are plate springs of thin plates that are inserted and positioned perpendicular to the rear end face, are formed to protrude, and the left and right vertical thin plate springs (22, 22a) protrude outward from the side to the rear side of the center rear side The left and right rear horizontal protrusions 23 and 23a are formed to be inserted into the horizontally extended recessed portion 17, and the elastic hydraulic pressure control member 20 is elastically moved forward and backward on the semicircular expanded recessed portion 16 by water pressure; It has a square plate body 31 which is a square plate which is respectively inserted into the front and rear side square plate insertion recesses 15 and 15a of the left and right water pressure control bodies 10 and 10a, and the front and rear side tube holes at the center of the square plate body 31 ( 11 and 11a) respectively projecting to the inner periphery of the sprinkler head side branch pipe 72 and the joint side branch pipe 71 has a coupling pipe section 32 formed with an inner screw section 32a screwed together The front and rear side pipe joint plates 30 and 30a having a cover fastening portion 33 formed with a concave portion inwardly formed on the inner surface of the front end of the tube portion 32 and having a front end screw thread 33a; Left and right side packings (40, 40a) forming watertight insertion and fixed into the upper and lower packing grooves (18, 18a) of the left and right water pressure control bodies (10, 10a) with rubber packings; With rubber packing, it is in close contact with the front end surface of the coupling pipe part 32 of the front and rear side pipe joint plates 30 and 30a, and at the same time, the upper and lower end packing grooves 18 and 18a of the left and right water pressure control bodies 10 and 10a are in close contact with the tip to ensure watertightness. Forming the front and rear packing rings (50, 50a); And the front and rear side pipe joint plates (30, 30a) in the center of the inner surface with a ring body respectively inserted into the sprinkler head side branch pipe 72 and the joint side branch pipe 71 screwed to the front and rear side pipe joint plates 30 and 30a. It has a fastening pipe part 61 formed with an outer screw thread 61a that protrudes to the cover fastening part 33 of the front end part screw thread 33a and is screwed into the cover fastening part (61) by the outer screw thread 61a. 33) The front and rear packing rings 50 and 50a are connected to the front and rear end surfaces of the coupling pipe 32 and the left and right end packings 40 and 40a as they are screwed to the front end screw thread 33a. It relates to a building fire sprinkler water pressure regulator having a front and rear covering (60, 60a) having a. According to the water pressure, the fire water flowing in through the rear side pipe hole and the rear side extension hole of the left and right water pressure control body through the joint side branch pipe is spread along the upper front and rear extended slope and the lower front and back extended slope by the elastic water pressure control member. Push the elastic water pressure control member to the front side, and at this time, the left and right vertical thin plate springs of the elastic water pressure control member are elastically deformed forward in the semi-circular expansion recessed part, By adjusting the distance between the lower front slope and the lower front slope, the water quantity is controlled so that the water pressure of the fire water discharged to the sprinkler head through the sprinkler excitation pipe is automatically maintained at a constant level regardless of the strength or weakness of the water pressure flowing through the branch pipe on the joint side. can have an effect.