JPS6115486Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a piping device, and its purpose is to relieve stress caused by expansion and contraction of piping members and protect flow rate switches and the like.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3. In the figures, 1 is a hot water boiler;
2 is a water pipe connected to this hot water boiler, and a pressure reducing valve 3 is provided. 4 is a safety valve provided at the top of the hot water boiler, 5 is a hot water pipe connected to this safety valve, 6 is a piping device connected to this hot water pipe, which is configured as shown in Fig. 2, and 7 is an external box,
8a and 8b are piping members fixed to opposing side walls of this outer casing, and the above-mentioned hot water pipe 5 is attached to the piping member 8a.
is connected. Reference numeral 9 designates a hot water circulation pump that is installed inside the outer casing 7 and has one end connected to the piping member 8a; 10 represents a flow rate switch that is installed in addition to this pump via a pipe body 11; is connected to the piping member 8b, and as shown in FIG. A magnet 15 is provided so as to slide on the shaft 14 supported by the magnet 15 on the outer peripheral side.
A reed switch 16 which is opened and closed by a switch 5 is provided. A water faucet 17 is connected to the piping member 8b via the hot water supply pipe 5.

For those configured as above, 1 to
Water with a pressure of 3Kg/ ^cm2 is controlled by pressure reducing valve 3.
The pressure is reduced to 0.6 Kg/cm ² and the water is supplied into the hot water boiler 1. Here, it is heated by a boiler and becomes hot water.
The hot water is discharged by opening the faucet 17, which moves the flowing water magnet 15 within the flow rate switch 10 and turns on the reed switch 16. As a result, the pump 9 is operated and a predetermined flow rate is discharged even if the faucet 17 is installed at a high place. By operating the pump in this way, members such as the tube expand, but the flow rate switch 1
0 is fitted, expansion (or contraction) is absorbed and no stress is generated, so that the flow rate switch 10, pump 9, etc. are not destroyed. Further, since dimensional errors in piping members are absorbed by the O-ring 12, piping work becomes easier.

As explained above, in this device, both ends of the flow rate switch are fitted to the piping member and the pipe body with an O-ring interposed between them, so that expansion or contraction of the pipe body, etc. can be absorbed, and the flow rate is Since no stress is applied to switches, pumps, etc., they will not be destroyed. Furthermore, the presence of the O-ring has the effect of making piping work easier.

[Brief explanation of the drawing]

FIG. 1 is a pipe system diagram showing a state in which a piping device according to an embodiment of this invention is used, FIG. 2 is a side view showing an embodiment of this invention, and FIG. 3 is a sectional view showing a flow rate switch 10. . In addition, the same reference numerals in each figure indicate the same parts, 6 is a piping device, 7 is an outer casing, 8a, 8b are piping members, 9
is a pump, 10 is a flow rate switch, 11 is a pipe body, 1
2 is an O-ring.

Claims (1)

[Scope of utility model registration request] an outer casing, a pump provided in the outer casing, a flow rate switch communicating with one of the pumps via a pipe, and a flow rate switch provided in the other of the flow rate switches and the other of the pumps and penetrating the side wall of the outer casing. and a piping member to which the flow rate switch is fixed, wherein both ends of the flow rate switch are fitted with the piping member and the pipe body with an O-ring interposed therebetween.