JPH0322182U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1a is a cross-sectional view of the first embodiment of the present invention in a water-stop state, Figure 1b is a cross-sectional view of Figure 1a when water is supplied, and Figure 2 is a cross-sectional view of the second embodiment of the present invention. , 3rd
The figure is a sectional view of the third embodiment of the present invention, and FIG.
FIG. 5 is a cross-sectional view of the fourth embodiment of the present invention, FIG. 6 is a cross-sectional view of the fifth embodiment of the present invention, and FIG.
FIG. 7 is a cross-sectional view of the seventh embodiment of the present invention, FIG. 8 is a cross-sectional view of the eighth embodiment of the present invention, and FIG. 9 is a ninth embodiment of the present invention. Fig. 10a is a sectional view when the embodiment shown in Fig. 1 is used in an aquarium, and Fig. 10b is a partial sectional view when the embodiment shown in Fig. 2 is used in a Western toilet bowl. . DESCRIPTION OF SYMBOLS 1... Water inlet part, 4... Flow rate adjustment hole, 5... Cap, 6... Flow rate adjustment hole, 7... Slider body, 1
3...Diaphragm valve, 17...Lower body, 2
0...Pilot pressure chamber, 21...Valve seat, 22...Cushion body, 23...Mandrel, 24...
...Pilot valve, 26...Lever, 23...
Operating diaphragm, 34... Telescopic pipe for water level adjustment, 35...
Air, 41, 42, 42a...Magnet, 43...Float, 43a...Space, 44...Water level adjustment bolt.

Claims (1)

[Claims for Utility Model Registration] (1) A differential pressure valve that opens and closes a diaphragm valve 13 based on changes in pressure within the pilot pressure chamber 20, the pilot pressure chamber 20 being equipped with a compressible and expandable cushion body 22; Working diaphragm 3
2 or float 43 into the pilot pressure chamber 2.
A pilot-operated diaphragm valve characterized in that the pilot valve 24 is connected to a pilot valve 24 provided at the diaphragm valve 20, and the pilot valve 24 is opened and closed by the movement of the operating diaphragm 32 or the float 43. (2) In claim 1, a cap 5 having a flow rate adjustment hole 4 is fixed in the water inlet part 1 communicating with the opposite side of the pilot pressure chamber 20 via a diaphragm valve 13, and the cap 5 is slidable against the cap 5. A slider body 7 having a flow rate adjustment hole 6 is movably disposed, and the flow rate adjustment hole 6 of the slider body 7 moves relative to the flow rate adjustment hole 4 of the cap 5 by sliding of the slider body 7 due to water pressure. A pilot-operated diaphragm valve that is unique in its unique features. (3) In claim 1, the compressible cushion body 22 is included in the pilot pressure chamber 20 in order to suppress sudden pressure changes in the pilot pressure chamber 20 and slow down the operating speed of the diaphragm valve 13. Alternatively, a pilot operated diaphragm valve is provided with an inflatable cushion body 22 outside the pilot pressure chamber 20. (4) In claim 1, an air chamber having an extensible pipe 34 for water level adjustment, and an actuating diaphragm 32 provided in the air chamber further actuated by air 35 actuated by water pressure or by buoyancy. a float 43 provided in the air chamber having an actuated water level adjustment bolt 44 and a space 43a for containing water;
A pilot-operated diaphragm valve comprising a pilot valve 24 that is seated on and off from a pilot valve seat 21 in the center of a diaphragm valve 13 or a pilot valve seat 21 formed in a lower body 17.