JPH0351007Y2 - - 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. Furthermore, since it is a floating type fountain, it has poor stability, and when waves occur, the fountain posture is significantly disturbed.

The present invention was developed in view of the above-mentioned circumstances, and the nozzle can be raised and lowered when the water level changes, and it can also be installed in shallow water locations, eliminating restrictions on the installation location. To provide a fountain device that is small in size, has excellent stability, and is relatively inexpensive in terms of cost.

[Means for solving problems]

In order to achieve the above object, the fountain device according to the present invention has an outer cylinder whose lower end surface is closed buried in the bottom of the water, a cylinder for raising and lowering the nozzle is fixed inside the outer cylinder, and a lid is fixed to the upper surface of the outer cylinder. A nozzle tube that penetrates the body 6 and can introduce fountain water into the interior is connected to the piston rod of the nozzle lifting cylinder, a fountain nozzle is provided at the tip of the nozzle tube, and the outer periphery has a tapered surface and a split. A ring is fitted onto the nozzle cylinder, a ring operating cylinder is fixed directly or indirectly to the outer cylinder, an operating member that engages with the ring is connected to the piston rod of the ring operating cylinder, and the ring is connected to the piston rod of the ring operating cylinder. A stopper having a tapered surface that can come into close contact with the tapered surface of the ring is fixed within the range of movement of the ring by the operating member.

[Effect]

The fountain device according to the present invention operates a ring operating cylinder and slides the ring along the nozzle tube, thereby bringing the ring into pressure contact with the tapered surface of the stopper or separating it from the tapered surface. At times, the ring contracts in diameter and tightens the nozzle tube to firmly fix it. Furthermore, when the nozzle lifting cylinder is operated with the ring spaced apart from the tapered surface of the stopper, the nozzle tube moves up and down and the nozzle position is displaced.

〔Example〕

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

In one embodiment shown in FIGS. 1 to 5, 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 at the bottom of the pit 1.

An outer cylinder 3 whose lower end surface is closed is embedded in the pit 1, and this outer cylinder 3 is fixed to the foundation 2 by bolting a collar 3a formed on the periphery of the lower end surface to the foundation 2. . A piping connection part 3b is formed on the side surface of the outer cylinder 3 to supply fountain water into the outer cylinder 3, and water pumped by a pump (not shown) to this piping connection part 3b is formed. A fountain pipe 4 that sends water is connected. still,
The pump may be a submersible pump or a pump installed on land.

A cylindrical cylinder mounting frame 5 is housed in the outer cylinder 3, with a flange 5c formed at the periphery of the upper end being fixed to the flange 3c at the upper end of the outer cylinder 3. A communication hole 5b is bored in the side surface of the cylindrical cylinder mounting frame 5 so that the water pumped into the outer cylinder 3 can be sent thereinto. Further, a collar 5c is formed at the lower end of the cylinder mounting frame 5 and comes into contact with the inner circumferential surface of the outer cylinder 3, so that the cylinder mounting frame 5
A steady rest is provided.

A lid body 6 having a through hole 6a for a nozzle cylinder, which will be described later, is formed on the upper end surface of the cylinder mounting frame 5.
is fixed, whereby the lid body 6 is indirectly fixed to the upper end of the outer cylinder 3.

The nozzle elevating cylinder 7 is fixed on a cylinder mounting base 5d erected on the bottom surface of the cylinder mounting frame 5. As shown in FIG. 3, inside the nozzle lifting cylinder 7, a piston 9 is installed, which is equipped with a sealing mechanism 8 made of an O-ring at the sliding contact portion with the inner wall of the nozzle lifting cylinder 7. This piston 9 has a piston rod 10 protruding from the upper end surface of the nozzle elevating cylinder 7.
is fixed. A connecting member 11 is provided at the tip of the piston rod 10, and this connecting member 11 is fixed by welding or the like to the inner periphery of a nozzle cylinder 12 that passes through a through hole 6a formed in the lid 6. Note that the nozzle tube 12 is connected to the through hole 6 of the lid 6.
a, and a sealing mechanism 13 using an O-ring is provided at the sliding contact portion on the lid body 6 side. Further, the nozzle cylinder 12 has an open lower end, and communicates with the inside of the outer cylinder 3 at this lower end. Furthermore, a fountain nozzle 14 is attached to the upper end of the nozzle tube 12.

A guide member 16 is fixed to the inner periphery of the outer cylinder 3, and is in sliding contact with the outer periphery of the nozzle cylinder 12, and is provided with a sealing mechanism 15 using an O-ring in this sliding contact portion. The lower end side of the nozzle tube 12 is enlarged in diameter, and this enlarged diameter serves as a stopper to prevent the nozzle tube 12 from rising above the fixed position of the guide member 16. .
In order to prevent the nozzle cylinder 12 from coming off the fixed position of the guide member 16, the amount of oil sent to the lower chamber 18 in the nozzle lifting cylinder 7, which will be described later, is controlled. This is also possible by limiting the amount by which the piston rod 10 rises.

The inside of the nozzle lifting cylinder 7 is partitioned into an upper chamber 17 and a lower chamber 18 by a piston 9, as shown in FIG. And the upper chamber 17
A hydraulic pipe 19 is connected to the lower chamber 18 as a fluid pressure feed pipe for pressurizing oil for lowering the nozzle into the upper chamber 17, while a hydraulic pipe 19 is connected to the lower chamber 18 for pressurizing oil for raising the nozzle into the lower chamber 18. Hydraulic piping 20 is connected as a fluid pressure feeding pipe for this purpose. Oil is pumped to these hydraulic pipes 19 and 20 by a hydraulic pump unit (not shown) based on changes in water level detected by a water level detection device (not shown) or the like.
When the water level rises, an amount of oil corresponding to the amount of rise in the water level is pumped to the hydraulic piping 20, 22 to create a fountain as shown by the dashed line in Fig. 1. The nozzle 14 is raised, and when the water level drops, an amount of oil corresponding to the drop in the water level is pumped to the hydraulic piping 19, and the fountain nozzle 14 is lowered as shown by the two-dot chain line in FIG. It's getting old.

A ring 21 is fitted onto the nozzle cylinder 12 within the outer cylinder 3 . This ring 21 is the fourth
As shown in the figure, a split 21b is formed on the outer circumferential surface of the lower half, which has a tapered surface 21a whose diameter decreases downward and is formed by cutting out a part of the ring in the axial direction. The inner diameter of this ring 21 is formed to be slightly larger than the outer diameter of the nozzle barrel 12, but by reducing the diameter by reducing the interval between the splits 21b, this radius can be made smaller than the outer diameter of the nozzle barrel 12. can do.

The ring operating cylinder 22 is mounted on a mounting base 5e fixed to the cylinder mounting frame 5, and an operating member 23 that engages with a recess 21c provided on the outer circumferential surface of the ring 21 is connected to the piston rod 22a. has been done. This operating member 23
is supported by a support member 24 fixed to the cylinder mounting frame 5 on the side symmetrical to the connection portion with the piston rod 22a.

The inside of the ring operation cylinder 22 has a fifth
As shown in the figure, an upper chamber 26 and a lower chamber 2 are connected by a piston 25 to which the piston rod 22a is fixed.
A hydraulic pipe 28 is connected to the upper chamber 26 as a fluid pressure pipe for pressurizing oil for lowering the ring into the upper chamber 26, while a lower chamber 27 is connected to a hydraulic pipe 28 for pressurizing oil for lowering the ring into the upper chamber 26. oil in this lower chamber 2
A hydraulic pipe 29 is connected as a fluid pressure feed pipe for press-fitting into the inside of the hydraulic pipe 7 . Therefore, the upper chamber 2
6 or the lower chamber 27 to raise and lower the piston rod 22a of the cylinder 22, the ring 21 slides up and down along the nozzle tube 12. The operation member 23 may be supported by the support member 24 by pivoting a pin 30 shown in FIG. A hole may be formed to support the pin 30 in a vertically movable manner.

The stopper 31 is connected to the piston rod 22a.
The arm 32 is fixed to the tip of an arm 32 attached to the inner peripheral surface of the outer cylinder 3 so as to be located within the movement range of the ring 21 and below the ring 21, which slides up and down as the inner cylinder 3 moves up and down. A tapered surface 31a that can be brought into close contact with the tapered surface 21a of the ring 21 is formed on the circumferential side. Therefore, when the ring 21 is slid downward, the tapered surface 2 of the ring 21
1a is in close contact with the tapered surface 31a of the stopper 31, and as the ring 21 slides further downwards along the tapered surface 31a, the ring 21 reduces the interval between the splits 21b and reduces the inner diameter. Tighten the nozzle tube 12 as shown by the solid line in Figure 5. Moreover, when the ring 21 is slid upward,
As the tapered surface 21a moves toward the larger diameter side of the tapered surface 31a, the ring 21 expands to its original diameter as shown by the dashed line in FIG. 5, and is no longer tightened against the nozzle tube 12.

Tightening and opening of the nozzle tube by the ring 21 is performed in conjunction with the lifting and lowering of the nozzle tube 12. That is, the pressure feeding of oil to the hydraulic pipes 28 and 29 connected to the ring operation cylinder 22 and the pressure feeding of oil to the hydraulic pipes 19 and 20 connected to the nozzle lifting cylinder 7 are performed by water level detection as described above. When a change in the water level is detected by a device or the like, the ring 21 is released from tightening the nozzle tube 12 before the nozzle tube 12 is raised or lowered, and the ring 21 is tightened again after the nozzle tube 12 is raised or lowered. will be carried out.

In the fountain device configured as described above, the ring 21 is normally lowered, and the diameter of the ring 21 is reduced by the stopper 31, so that the nozzle tube 12 is tightened. Then, when a change in the water level at the installation location is detected by a water level detection device, etc.
First, oil is pumped into the lower chamber 27 of the ring operating cylinder 22 via the hydraulic piping 29, and the ring 21 is raised to release the nozzle cylinder. Next, if the water level changes due to rainfall or the like, oil is forced into the lower chamber 18 of the nozzle lifting cylinder 7 through the hydraulic piping 20, and the nozzle tube 12, that is, the nozzle 14, is moved to the point shown in FIG. When the water level rises as shown by the chain line and the water level changes downward, oil is forced into the upper chamber 17 of the nozzle lifting cylinder 7 through the hydraulic piping 19, and the nozzle 14 moves as shown by the two-dot chain line in FIG. It descends as shown in . At this time, the amount of rise or fall in the water level,
By controlling the amount of oil pumped into the upper chamber 17 and lower chamber 18 so as to match the amount of rise or fall of the nozzle 14, the relative distance between the tip of the fountain nozzle 14 and the water surface can be kept constant at all times. You can keep it. In this way, after the nozzle cylinder 12 is raised or lowered, oil is force-fed to the upper chamber 26 of the ring operation cylinder 22 via the hydraulic piping 28,
The ring 21 is lowered and the nozzle tube 12 is tightened as described above.

It should be noted that the present invention is of course not limited to the above embodiments, and for example, air may be used instead of oil as the fluid for operating the nozzle lifting cylinder and the ring operating cylinder. Further, the cylinder mounting frame does not have to be cylindrical as shown in the embodiment, as long as each cylinder can be mounted thereon. 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, the shape of the operating member connected to the piston rod of the ring operating cylinder is not critical as long as it can move the ring up and down. Others In the above embodiment, an example was shown in which the fluid pressure feeding to the ring operation cylinder and the nozzle lifting cylinder is controlled based on changes in water level, but the present invention is not necessarily limited to control based on such changes in water level. For example, it is also possible to decide whether to raise or lower the nozzle by human judgment, and to sequentially operate the ring and the cylinder for raising and lowering the nozzle by operating a push button or the like.

[Effect of idea]

As is clear from the above explanation, 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 ring lifting cylinder. By moving the fountain nozzle up and down in accordance with 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 nozzle lifting cylinder is fixed in an outer cylinder buried at the bottom of the water, what is placed underwater is the nozzle cylinder connected to the piston rod protruding from the nozzle lifting cylinder, and the nozzle cylinder attached to this nozzle cylinder. It only has a fountain nozzle, so it can be installed even in shallow water locations. Furthermore, by attaching the cylinder for lifting and lowering the nozzle to the cylinder mounting frame suspended within the outer cylinder, the nozzle can be lifted and lowered using a commercially available cylinder, which also has the advantage of being easy to manufacture. Furthermore, by pressing a split ring fitted onto the outside of the nozzle tube against a stopper fixed to the outer tube, the nozzle tube is tightened by the ring. It can be firmly fixed to the outer cylinder, increasing stability and preventing the fountain from being disturbed by waves. Furthermore, the fountain device according to the present invention does not require large-scale floats or mooring devices, so it is inexpensive.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional explanatory view showing an embodiment of the fountain device according to the present invention, FIG. 2 is an end view taken along the line XX in FIG. 1,
Figure 3 is a longitudinal sectional view of the nozzle lifting cylinder;
The figure is a perspective view of the ring, and FIG. 5 is an explanatory diagram in which a part of FIG. 1 is cut away and enlarged. 3... Outer cylinder, 6... Lid, 7... Nozzle lifting cylinder, 10... Piston rod, 12... Nozzle cylinder, 14... Fountain nozzle, 21... Ring,
21a...Tapered surface, 21b...Split, 22...
Ring operation cylinder, 31...stopper, 3
1a...Tapered surface.

Claims (1)

[Scope of utility model registration request] An outer cylinder with a lower end surface closed is buried in the bottom of the water, a cylinder for raising and lowering the nozzle is fixed in the outer cylinder, and a lid body fixed to the upper surface of the outer cylinder is penetrated, and fountain water is introduced inside. A nozzle tube that can be formed is connected to the piston rod of the nozzle lifting cylinder, a fountain nozzle is provided at the tip of the nozzle tube, a ring having a tapered surface on the outer periphery and a split is fitted onto the nozzle tube, and the ring is fitted onto the nozzle tube. A ring operating cylinder is fixed directly or indirectly, an operating member that engages with the ring is connected to a piston rod of the ring operating cylinder, and a stopper is formed with a tapered surface that can come into close contact with the tapered surface of the ring. A water fountain device, characterized in that the ring is fixed within a movement range of the operating member.