JPH0397714U

JPH0397714U -

Info

Publication number: JPH0397714U
Application number: JP479990U
Authority: JP
Priority date: 1990-01-22
Filing date: 1990-01-22
Publication date: 1991-10-08
Anticipated expiration: 2005-01-22
Also published as: JPH0716171Y2

Description

[Brief explanation of the drawing]

第１図は本考案にかかる給水装置用減圧弁の一
実施例を示す断面図、第２図は給水流量Ｑに対す
る１次圧力と２次圧力を示す図、第３図はこの給
水装置用減圧弁を給水ポンプと組み合わせて運転
する方法を示す図、第４図は給水流量Ｊ１，Ｊ２
，Ｊ３と給水ポンプＰの吐出圧力（１次圧力）と
給水装置用減圧弁Ｂの２次圧力の関係を示す図で
ある。図中、Ａ……本体、１……第１の開口部、２…
…第２の開口部、３……第３の開口部、４……蓋
、５……シリンダ、６……調圧弁、８……スロツ
トルバルブ、１０……弁棒、１１……釣り合いピ
ストン、１２……貫通穴、１６……絞りオリフイ
ス、２０……１次圧力室、２１……調圧室、であ
る。 Fig. 1 is a sectional view showing one embodiment of the pressure reducing valve for water supply equipment according to the present invention, Fig. 2 is a diagram showing primary pressure and secondary pressure with respect to the water supply flow rate Q, and Fig. 3 is a pressure reducing valve for this water supply equipment. A diagram showing how to operate the valve in combination with a water supply pump, Figure 4 shows the water supply flow rates J1 and J2
, J3, the discharge pressure (primary pressure) of the water supply pump P, and the relationship between the secondary pressure of the pressure reducing valve B for the water supply device. In the figure, A...main body, 1...first opening, 2...
...Second opening, 3...Third opening, 4...Lid, 5...Cylinder, 6...Pressure regulating valve, 8...Throttle valve, 10...Valve stem, 11...Balancing piston , 12...through hole, 16...throttle orifice, 20...primary pressure chamber, 21...pressure regulation chamber.

Claims

[Claims for Utility Model Registration] The main body has a first opening, a second opening, and a third opening, and the pump discharge liquid flows into the first opening and the pump discharge liquid flows into the second opening. The third opening is provided with a lid, a cylinder is provided on the lid, and a pressure regulating valve is provided, and the first opening has a valve seat. A throttle valve is provided to cover the valve seat, and a guide is provided at the bottom of the throttle valve to slide up and down on the inner peripheral surface of the first opening, and one end is connected to the lid. has a valve stem extending through the cylinder and reaching into the cylinder, a balancing piston sliding in the cylinder is fixed to one end, the throttle valve is fixed to the other end, and the valve stem has the first valve stem fixed to the first end. A through hole is provided through which the pump discharge hydraulic pressure flowing into the opening of the cylinder communicates with the primary pressure chamber surrounded by the upper surface of the counterbalancing piston, and further communicates between the first opening and the second opening. A water supply characterized in that an orifice and a throttle orifice are provided that communicate with the through hole and a pressure regulating chamber surrounded by the cylinder, the lower surface of the counterbalance piston, and the upper surface of the lid, and the pressure regulating chamber communicates with the pressure regulating valve. Pressure reducing valve for equipment.