JPS6134586B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic water supply device, and particularly to an automatic water supply device suitable for use in an artificial pond such as a fountain pond.

Artificial ponds such as fountain ponds have aesthetic issues,
It is also desirable to maintain a constant water level at all times as emergency water in the event of an emergency, and for this reason various automatic water supply methods have been used in the past.
Supplying water to fountain ponds and the like has the following special problems that must be solved, unlike supplying water to drinking water tanks.

The first is that the water main and the water supply pipe at the surface of the pond should not be connected. That is, when the water is cut off, the inside of the main pipe becomes a vacuum, and at this time, it is necessary to completely prevent pond water from entering the main pipe through the pipe that connects the main pipe and the water supply pipe. This is because it is necessary to completely prevent bacteria in the pond water from flowing into the main pipe, and it cannot be said that valves etc. in the middle of the pipe will never fail.

Second, since fountain ponds are installed in public places such as outdoor parks, it is not recommended for aesthetic reasons and for children etc. to have a means of detecting the water level, such as a float directly connected to a valve, floating on the surface of the pond. This is undesirable in order to prevent breakdowns due to tampering, and if the detection means is electrical, it is necessary to prevent electrical shocks, other accidents, and breakdowns due to water exposure.

In order to solve the first problem, a method was considered in which water is supplied from the water main into a tank, the water is temporarily stored there, and then water is supplied from the tank to the pond surface using a water level detection means installed above the pond water surface. The equipment becomes complicated, leaving problems in terms of construction and cost, and
The second problem, which is the occurrence of malfunctions due to children playing with the detection means on the surface of the pond, cannot be solved.

Hereinafter, details of the present invention will be explained based on illustrated embodiments.

1 and 2 show a first embodiment of the present invention. Reference numeral 1 denotes a pond edge, and a water supply port 3 of a water supply pipe 2 faces the bottom side of the pond edge 1. Further, on the water supply pipe 2, two pipes 4 and 5 communicating with the water supply pipe 2 are installed, and on the two pipes 4 and 5, a water supply part 10 is installed at least at a position higher than the edge of the pond. The detection section 20 is provided so as to be housed in the box body through a partition wall, and the water supply section 10 is provided with a main valve 12 connected to the main pipe 11, and the detection section 20 is provided with a floater valve 21. 12 and floater valve 21 are connected. Inside the pipe 5, a rod 7 having a float 6 at the lower end is mounted on a plate 30 having an orifice 31 by fitting it into a hole in the center of support plates 8, 8 provided inside the pipe 5 so as to be able to rise and fall freely. A valve body 9 is attached to the tip of the rod 7 and is provided so as to come into contact with the valve seat 22 of the detection section 20. The support plates 8, 8 have appropriately sized insertion holes 32 through which the water in the detection section 20 flows below the pipe 5. Further, 33 is an air vent inside the pipe 5.

FIG. 2 shows the internal configuration of the water supply section 10 and the detection section 20. The main valve 12 is connected to a floater valve 21 via a pipe 23, and the valve body 15 is linked with a piston 18 to open and close the valve 15. do. 13,1
4 constitutes a primary chamber and a secondary chamber communicating through an orifice of a piston 18, the primary chamber 13 is formed between a cylinder cover 19 and the piston 18, and the orifice of the cylinder cover 19 is connected to a chuck valve 19',
19', and is formed to have a slightly larger diameter than the orifice of the piston 18. 17 is a drain pipe provided below the valve body 15, as shown in FIG.
The opening of the water injection pipe 17 is located at a position higher than at least the edge of the pond. On the other hand, the floater valve 21 is connected to the main valve 12 via a pipe 23, and when the float 24 is rotated downward in the figure, the floater valve 21 is connected to the drain port 25 via a crank 26.
As a result, water in the secondary chamber 14 of the main valve 12 is discharged.

The first embodiment of the present invention is configured as described above,
Next, to explain its function, as shown in FIG. Therefore, the float 21
is also in the position shown in the figure, and therefore, the water pressure in the main valve 12 is the same in the primary chamber 13 and the secondary chamber 14, so the check valves 19', 1 of the orifice of the cylinder cover 19 are
9' is closed, and the valve body 15 is in a fully closed state due to the source pressure from the main pipe and the weight of the piston. Therefore, water is not supplied to the pipe 4.

Next, when the water level in the pond decreases, the water level in the pipes 4 and 5 communicating with the pond via the water supply pipe 2 also decreases, and the float 6 in the pipe 5 communicating with the pond decreases. Therefore, the valve body 9 provided at the upper end of the rod 7
is separated from the valve seat 22 of the detection part 20, and the water in the detection part 20 falls into the pipe 5 through the insertion hole 32 of the support plate 8. At this time, the detection unit 20 and the water supply unit 10
The state shown in the figure will be reached. That is, when the float 24 is lowered and the valve is opened by the crank 26 that is interlocked with the float 24 and water is drained from the discharge port 25 and the pressure in the secondary chamber 14 in the main valve 12 is reduced, the check valves 19' and 19 in the primary chamber 13 are opened. ' opens, and in proportion to the rise in pressure in the primary chamber 13, the piston 18 and the valve body 15 begin to move upward, becoming fully open and starting to supply water from the water injection pipe 17.

The water level in the pond rises, water slowly enters the pipe 5 through the orifice 31, and the float 6
Lift up the valve body 9 provided at the tip of the float 6.
When the valve seat 22 of the detection unit 20 is closed, the water level inside the detection unit rises, the float 24 moves upward, and the drain port 2
5 is stopped, and the pressure in the secondary chamber 14 of the main valve 12 rises to the same pressure as the primary chamber 13, and the chuck valves 19' and 19' are closed, and the valve body slowly loosens due to the water supply source pressure and the weight of the piston. 15 is tightened,
Fully close.

FIG. 3 shows a second embodiment of the present invention, in which the same members as in FIGS. 1 and 2 are designated by the same reference numerals.

In this embodiment, since the configuration of the detection section 20 is different, this section will be mainly explained. That is, electrodes 45, 46, and 47 are provided at appropriate positions above the orifice 31 in the pipe 5, with their tips facing each other.
46, the electromagnetic valve 40 is opened and closed, and the main valve 12 of the water supply section 10 is actuated. The secondary chamber 14 of the main valve 12 is opened by opening the solenoid valve 40 when the water level does not reach the tip of the electrode 45.
The water is drained from the pipe 4 through the pipe 41 facing into the pipe 4, and as the piston 18 rises, the water is discharged from the water injection pipe 17 to the pipe 4.
Other operations of the main valve 12 depending on the pond water level are the same as in the first embodiment. Nao 42
is a control box that houses a control circuit.

The present invention is configured as described above, and includes a water main,
Since it is not connected to the water supply pipe that reaches the pond surface (middle),
It is possible to completely prevent backflow of pond water in the event of a mains water outage, and meet public health requirements.In addition, the water supply section and detection section can be installed at a location higher than the pond edge. is optional, and can prevent malfunctions caused by interference, which occur in conventional water level detection means. Furthermore, the float or electrode that serves as the detection means is installed on the orifice inside the pipe, so even if waves are generated on the surface of the pond due to wind, etc., the water level can be accurately determined without being affected by this and causing no malfunction. This makes detection possible. In addition, since the water supply section and the detection section are arranged side by side with the partition wall in between, it is possible to keep the section dry even when using electrical detection means.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, and FIG. 3 shows a sectional view of a main part of a second embodiment. 1...Pond edge, 2...Water pipe, 3...Water inlet,
4, 5... Pipe, 6... Float, 10... Water supply section, 11... Main pipe, 12... Main valve, 20... Detection section, 21... Floater valve, 24... Float,
31... Orifice, 40... Solenoid valve, 45-4
7... Electrode.

Claims (1)

[Claims] 1. The water supply port of the water supply pipe faces below the pond edge, and two connected pipes are installed on the water supply pipe, each communicating with the water supply pipe, and a partition wall is installed above the two pipes at a position higher than the pond edge. A water supply section and a detection section are provided respectively through the water supply section, and the water supply section has a water injection pipe that is connected to the water main pipe and injects water into one pipe through the main valve, and the detection section is connected to the water main pipe and has a water injection pipe that injects water into one pipe through the main valve. 1. An automatic water supply device comprising: a water level detecting means on an orifice provided in the main valve;