JPH0351005Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to fountain devices installed in rivers, ponds, etc. in addition to artificial pools, and in particular, the nozzle can be raised and lowered when the water level changes. This invention relates to a fountain device that enables water fountains.

[Conventional technology]

There are stationary fountain devices that have a fountain piping section fixed to the foundation and a nozzle section fixed to this fountain piping section, but in such stationary fountain devices, the nozzle section is submerged in water as the water level rises, causing the fountain to flow. There was a problem that the appearance of the nozzle changed, or conversely, the nozzle part was exposed due to a drop in the water level, spoiling the aesthetic appearance. Therefore, the above-mentioned stationary fountain device cannot be used in rivers and the like where the water level cannot be adjusted. For this reason, conventionally, for fountain devices installed in rivers, etc., the main body of the fountain device is suspended in water using a levitation float so that the main body of the fountain device is submerged in the water with the tip of the nozzle protruding above the water surface, and the main body of the fountain device is suspended in the water using a mooring device. A floating fountain device has been adopted in which the main body of the fountain device is moored in a fixed position in a horizontal plane so as to be able to follow fluctuations in water level, and the main body of the fountain device is maintained in a fixed position by an attitude control float.
(Utility Model Publication No. 56-95365).

[Problem that the invention attempts to solve]

However, with the above floating fountain device, the main body of the fountain device must be connected to the mooring device via a rod or chain, which makes it difficult to install the main body of the fountain device in a position extremely far from the mooring device. Therefore, there was a drawback that the installation location of the main body of the fountain device was limited. Furthermore, since the main body of the fountain device is suspended using a large-scale float, it is difficult to install it in shallow water. Furthermore, since it requires expensive equipment such as floats and mooring devices in addition to the fountain device itself, it is also expensive in terms of cost.

The present invention was developed in view of the above-mentioned circumstances, and it is possible to raise and lower the nozzle when the water level changes, and there are fewer restrictions on the installation location, and it can be installed in relatively shallow places. To provide a fountain device which can be installed at a relatively low cost.

[Means for solving problems]

In order to achieve the above object, the fountain device according to the present invention has a cylinder mounting frame buried in a pit dug at the bottom of the water, a plurality of cylinders arranged side by side in this mounting frame, and a sliding contact portion inside these cylinders. A piston equipped with a sealing mechanism is provided inside, a piston rod fixed to each piston is made to protrude from the upper end surface of the cylinder, each piston rod is connected by a connecting member at a protruding portion from the cylinder, and a fountain nozzle is connected to the connecting member. A flexible hose connected to the fountain piping is connected to the fountain nozzle, and fluid pressure feeding pipes are respectively connected to the upper and lower chambers of the cylinder partitioned by the piston.

[Effect]

The fountain device according to the present invention operates simultaneously a plurality of cylinders arranged in parallel on a cylinder mounting frame to raise or lower a fountain nozzle attached to a connecting member that connects the piston rods of these cylinders. Fountain water is supplied to the nozzle using a flexible hose.

〔Example〕

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

In one embodiment shown in FIGS. 1 and 2, A
is the bottom of water such as river bottoms and pond bottoms. A pit 1 is dug in the water bottom A, and a foundation 2 made of concrete or the like is formed on the bottom and surrounding wall of the pit 1.

An outer cylinder 3 with an open top end is buried in the pit 1 as a cylinder mounting frame.
is fixed to the foundation 2 by bolting a collar 3a formed on the periphery of the upper surface to the upper end surface of the foundation 2.

Inside the outer cylinder 3, two identical cylinders 4,
5 are arranged in parallel, and these cylinders 4 and 5 each have fixing members 6 and 7 integral with their upper end surfaces fixed to the collar 3a of the outer cylinder 3, and their bottom surfaces fixed to the bottom plate of the outer cylinder 3. Therefore, it is fixed to the outer cylinder 3.

Inside the cylinders 4 and 5, there is a sealing mechanism 1 using an O-ring at the sliding contact portion with the inner wall surface of the cylinders 4 and 5.
Pistons 8, 9 with pistons 0, 11 are installed therein, and these pistons 8, 9 cause the cylinders 4, 5 to
The inside is partitioned into an upper chamber 12 and a lower chamber 13, and an upper chamber 14 and a lower chamber 15, respectively. Further, piston rods 16 and 17 projecting from the upper end surfaces of the cylinders 4 and 5 are fixed to the pistons 8 and 9, respectively, and the tips of these piston rods 16 and 17 are connected by a connecting member 18.

Hydraulic pipes 19, 21 are connected to the upper chambers 12, 14 of the cylinders 4, 5 as fluid pressure feed pipes for pressurizing oil for lowering the piston rods 16, 17 into these upper chambers 12, 14. Also,
On the other hand, in the lower chambers 13 and 15 of the cylinders 4 and 5,
Hydraulic pipes 20 and 22 are connected as fluid pressure feed pipes for pressurizing oil for raising the piston rods 16 and 17 into these lower chambers 13 and 15. The pressure of oil to these hydraulic pipes 19 to 22 is as follows:
This is done by controlling a hydraulic pump unit (not shown) based on changes in the water level detected by a water level detection device (not shown), etc., and when the water level rises, the amount of rise in the water level is Corresponding amounts of oil are pumped to the hydraulic pipes 19 and 21 in the same amount, and when the water level drops, the same amount of oil is pumped to the hydraulic pipes 20 and 22 in an amount corresponding to the amount of decrease in the water level. There is.

A fountain nozzle 23 is attached to the center of a connecting member 18 that connects the upper ends of the piston rods 16 and 17, and a flexible hose 24 is connected to this fountain nozzle 23. The other end of this flexible hose 24 is connected to a piping connection part 26a of a fountain piping 26 fixed to an angle 25 provided on the upper end surface of the foundation 2, and the water is fed under pressure by a pump (not shown). Water can be delivered to the fountain nozzle 23. Note that the pump for pumping water for the fountain may be a submersible pump or a pump installed on land.

In the fountain device configured as described above, when the water level at the installation location rises due to rain, etc., the hydraulic piping 20,
Oil is pumped into the lower chambers 13, 15 of the cylinders 4, 5 through 22, and conversely, when the water level decreases, oil is pumped into the upper chambers 12, 14 through hydraulic pipes 19, 21. When the oil is forced into the lower chambers 13, 15, the pistons 8, 9 are pushed up by this oil, and the piston rods 16, 17 are raised accordingly, as shown by the dashed line in FIG. As shown, the fountain nozzle 23 also rises.
On the other hand, when oil is pumped into the upper chambers 12, 14, the pistons 8, 9 are pushed down by the oil, and the piston rods 16, 17 descend, as shown by the two-dot chain line in FIG. The fountain nozzle 23 also descends. Therefore, the upper chamber 1 is adjusted so that the amount of rise or fall in the water level matches the amount of rise or fall in the piston rods 16 and 17.
By controlling the amount of oil pumped to the lower chambers 2, 14 or the lower chambers 13, 15, the relative distance between the tip of the fountain nozzle 23 and the water surface can be kept constant at all times.

It should be noted that the present invention is of course not limited to the above embodiments, and for example, air may be used as the fluid instead of oil. Furthermore, the mounting frame does not have to be cylindrical like the outer cylinder shown in the embodiment, as long as the cylinder can be attached to it.
Further, the number of cylinders to be attached may be three or more. Furthermore, the configuration of the sealing mechanism provided at the sliding contact portion of the piston with the cylinder inner wall can also be changed as desired. Furthermore, in the above embodiment, the pressure feeding of the fluid to the upper chambers 12, 14 or the lower chambers 13, 15 is controlled based on changes in the water level, but the present invention does not necessarily require such control. First, for example, the fluid may be pumped by human judgment to raise or lower the piston rod, that is, the fountain nozzle.

[Effect of idea]

As is clear from the above description, according to the fountain device according to the present invention, the fountain nozzle can be raised or lowered by pumping fluid into the upper or lower chamber provided in the cylinder.
By moving the fountain nozzle up and down in response to changes in the water level, it is possible to maintain a stable fountain position at all times, which has an extremely useful effect in maintaining the aesthetic appearance. In addition, since the cylinder is attached to a mounting frame buried at the bottom of the water, what is placed underwater is the piston rod protruding from the cylinder.
There is only a fountain nozzle attached to the connecting member that connects each piston rod, and it can be installed even in shallow water locations. Furthermore, it does not require large-scale floats or mooring devices, so it has the advantage of being low cost.

[Brief explanation of drawings]

FIG. 1 is an explanatory longitudinal cross-sectional view showing an embodiment of a fountain device according to the present invention, and FIG. 2 is a plan view thereof. 3... Outer cylinder, 4, 5... Cylinder, 8, 9...
Piston, 10, 11... Seal mechanism, 12, 1
4... Upper chamber, 13, 15... Lower chamber, 16, 17...
...Piston rod, 18...Connection material, 19-22
... Hydraulic piping (fluid pressure feeding pipe), 23 ... Fountain nozzle, 24 ... Flexible hose.

Claims (1)

[Scope of utility model registration request] A cylinder mounting frame is buried in a pit dug at the bottom of the water, multiple cylinders are installed in parallel on this mounting frame, and pistons with a sealing mechanism on the sliding contact part are installed inside these cylinders. Fixed piston rods are respectively protruded from the upper end surface of the cylinder, each piston rod is connected by a connecting member at a protrusion from the cylinder, a fountain nozzle is attached to the connecting member, and the flexible piston rod is connected to the fountain piping to the fountain nozzle. A fountain device characterized in that a hose is connected to the cylinder, and fluid pressure feeding pipes are respectively connected to an upper chamber and a lower chamber of a cylinder partitioned by the piston.