JPH04939Y2 - - 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 is particularly designed to facilitate installation and removal in pits. This invention relates to a water fountain device.

(Prior art) Conventionally, the main body of the fountain device is submerged in water with the tip of the nozzle protruding above the water surface, so that the main body of the fountain device is suspended in water using a levitation float, and the main body of the fountain device is controlled by a mooring device against fluctuations in water level. A floating fountain device was used in which the fountain device was moored so as to be able to follow the water, and the main body of the fountain device was maintained in a fixed posture using a float for attitude control (Japanese Utility Model Publication No. 56-95365).

However, with this type of fountain device, the installation location of the fountain device itself is limited, and since it is suspended using a large-scale float, it is difficult to install it in a shallow place, and the float and mooring device are difficult to install. However, since equipment other than the fountain device itself is expensive, it is disadvantageous in terms of cost.

Therefore, the present application is to develop a fountain device that raises and lowers the nozzle in response to changes in water level, is not subject to restrictions on installation location, can be installed in relatively shallow water locations, and is advantageous in terms of cost. It has been proposed by the applicant (U.S. Pat.
No. 157168).

(Problem that the invention aims to solve) This fountain device is a bottomed vertically extending exterior that is liquid-tightly equipped with a nozzle tube with a nozzle attached to its upper end and a cylinder device that raises and lowers the nozzle tube according to fluctuations in water level. It has a cylinder, and is configured to eject fountain water supplied to the outer cylinder from a nozzle through the nozzle cylinder, and is installed in a pit dug at the bottom of the water.

By the way, the fountain device forms a pit after draining an area surrounded by sheet piles, sandbags, etc.
It is installed in this pit. That is, the fountain device is installed by fixing the upper part of the fountain device to the pit with bolts, or by fixing the flange provided at the bottom of the outer cylinder with bolts to the bottom of the pit. Ru.

However, with the installation means for fixing the upper part of the fountain device by tightening bolts, since the outer cylinder is vertically elongated, the lower part has a large degree of freedom and the installation state is unstable, resulting in poor reliability. On the other hand, the installation method in which the flange provided at the bottom of the outer cylinder is bolted to the bottom of the pit has better stability and reliability than the installation method in which the upper part of the fountain device is secured by bolts. However, the problem is that it is extremely difficult to remove the fountain device underwater for maintenance and to reinstall it in a properly centered state underwater after maintenance.

The present invention was developed in view of these circumstances, and it aims to stabilize the installation state and ensure reliability, and also to be used not only during installation in a drained state, but also during removal work of the fountain device performed underwater. To provide a fountain device that can be easily and reliably reinstalled in a centered state.

(Means for Solving the Problems) The fountain device according to the present invention has a concave portion on one side and a convex portion on the other side of the bottom of the bottomed vertically long outer cylinder and the bottom of the pit that accommodates this outer cylinder. The outer cylinder is fitted and supported so as to be removable upward, and the base plate at the upper end of the outer cylinder is removably fixed to the upper surface of the upper end opening of the pit with a gap. .

(Function) In the present invention, the bottom of the outer cylinder is fixed to the bottom of the pit in a centered state by fitting the recessed part and the convex part, and the base plate at the upper end of the outer cylinder is fixed to the upper surface of the upper opening of the pit. On the other hand, two-point support is used to fix it with a gap.

Further, the fountain device can be removed by releasing the fixation of the base plate, and upon reinstallation, centering is automatically performed by fitting the above-mentioned uneven portions.

(Example) FIGS. 1 and 2 are longitudinal sectional front views showing an embodiment of the present invention, in particular, FIG. 1 shows the upper limit position of the nozzle tube, and FIG. 2 shows the lower limit position of the nozzle tube, In these figures, A is a water bottom such as a riverbed or a pond bottom, and a pit 1 is dug in this water bottom A, and a metal catch 2 is protruded from the bottom 1A of the pit 1. The seat 2 has a male tapered portion 3, which is a convex portion whose diameter decreases upward, at its upper end.

The pit 1 accommodates a vertically elongated outer cylinder 4 with a bottom, and a nozzle cylinder 5 is housed in the outer cylinder 4 in a liquid-tight manner that allows the nozzle cylinder 5 to move up and down. It's decorated. That is, the outer cylinder 4 has a female taper part 7, which is a concave part that opens downward and widens on the lower surface of the bottom part 4A, and the male taper part 3 of the seat 2 is fitted into this female taper part 7 from below. By matching the outer cylinder 4
The bottom part 4A of the pit 1 is supported by the pit 1 via the catch seat 2, and the base plate 8 attached to the upper end of the outer cylinder 4 and projecting radially outward is provided with a gap 9 against the upper surface 1b of the upper end opening 1B of the pit 1. It is attached and removably fixed. That is, in this embodiment, the annular sole plate 10 is attached to the upper end opening 1B of the pit 1, the base end 8A of the base plate 8 is fitted into the center hole 10A of the sole plate 10, and the upper surface of the base plate 10 is By fixing the base plate 8 to the sole plate 10 with the mounting bolts 11, the upper end of the outer cylinder 4 is supported on the pit 1 via the base plate 8 and the sole plate 10. ing.

The outer cylinder 4 consists of an upper body part 41 and a lower body part 42,
A central support portion 4 is liquid-tightly coupled by a coupling flange 43 and is formed of a female tapered portion whose diameter decreases upward on the inner periphery of a coupling flange 43A at the lower end of the upper body portion 41.
3a, and a rib-shaped lower support portion 42A is formed projecting from the inner periphery near the lower end of the lower body portion 42. An annular upper support member 12 that can move the nozzle tube 5 up and down in a liquid-tight manner is fitted and fixed to the upper end of the base plate 8.

The cylinder device 6 is housed upright in the outer cylinder 4 by appropriately fixing it to the upper surface of the bottom 4A of the outer cylinder 4,
The upper end of the piston rod 6A is connected to the connecting member 13.
It is integrally connected to the nozzle cylinder 5 via. Therefore, as the piston rod 6A moves up and down due to the operation of the cylinder device 6, the nozzle tube 5 moves up and down within the range of the stroke amount H.

The nozzle tube 5 has an open bottom end, and a nozzle 14 is attached to the top end. On the outer periphery of the lower end, there is a male tapered part 1 whose diameter decreases downward from the bottom.
5a, a boss portion 15 is formed which has a straight portion 15b having a uniform outer diameter and a male tapered portion 15c whose diameter decreases upward.

16 is a water supply pipe for supplying water for the fountain;
The water pumped by the pump is sent inside through the circumferential wall of the upper body part 41 of the outer cylinder 4.
The water sent into the nozzle tube 5 flows into the nozzle tube 5 through a plurality of through holes 5A formed in the peripheral wall of the nozzle tube 5, and is ejected from the nozzle 14. 17, 18 in the figure
is a hydraulic piping, which controls a hydraulic pump unit (not shown) according to changes in the water level detected by a water level detection device (not shown), and when the water level rises, it controls the amount of rise in the water level. Accordingly, the oil is guided from the hydraulic piping 17 to the cylinder lower chamber to push up the piston rod 6A and the nozzle tube 5, and when the water level falls, oil is guided from the hydraulic piping 18 to the cylinder upper chamber according to the amount of drop in the water level and the piston rod is pushed up. 6A and the nozzle tube 5 are pushed down.

In the above configuration, the fountain device has a metal part protruding from the bottom 1A of the pit 1, with respect to the female taper part 7, which is a concave part formed on the bottom surface of the bottom 4A of the outer cylinder 4 and which opens downward and widens towards the bottom. The bottom 4A of the outer cylinder 4 is supported in the pit 1 via the catch seat 2 by fitting the male taper part 3, which is a convex part whose diameter decreases upward, formed on the upper end of the catch seat 2. In addition, the base plate 8 attached to the upper end of the outer cylinder 4 and projecting radially outward is supported by the upper end opening 1B of the pit 1 via the sole plate 10, supporting at two points above and below, so that the installation state is stable. accurate and reliable. Further, the lower surface of the upper end flange portion 8B of the base plate 8 is made to correspond to the upper surface of the sole plate 10 with a gap 9, and the mounting bolts 11
The base plate 8 is connected to the sole plate 10 by
Because it is fixed to A sufficient tightening margin for the mounting bolt 11 can be ensured by the gap 9, so that the male taper portion 3 formed at the upper end of the catch seat 2 is replaced by the female taper portion formed at the lower surface of the bottom 4A of the outer cylinder 4. 7
However, it can be installed in a securely fitted state without wobbling.

On the other hand, when the fountain device is to be removed for maintenance or the like, it is sufficient to remove the mounting bolts 11 using a manual tool such as a box spanner to release the fixation of the base plate 8, and then lift it up.
This removal work of the mounting bolt 11 can be carried out very easily underwater regardless of the depth of the water. When reinstalling after maintenance, the outer cylinder 4 is suspended through the center hole 10A of the sole plate 10, and the base 8A of the base plate 8 is fitted into the center hole 10A of the sole plate 10.
By fitting the male tapered portion 3 of the catch seat 2 into the female tapered portion 7, centering is automatically performed underwater, and then the mounting bolt 11 is tightened using the hand tool. This tightening work of the mounting bolts 11 can be carried out extremely easily underwater regardless of the depth of the water.

In addition, in the present invention, the nozzle cylinder 5 and the nozzle 14 are moved to the first position due to the rise of the piston rod 6A.
When in the upper limit position shown in the figure, the male taper portion 15 of the boss portion 15 formed at the lower end of the nozzle tube 5
c is a central support portion 43 consisting of a female tapered portion of a coupling flange 43A formed at the lower end of the upper body portion 41 of the outer cylinder 4;
a, and the outer periphery of the approximately central portion in the longitudinal direction of the nozzle cylinder 5 is reliably supported by a two-point support system, upper and lower, supported by the base plate 8 and the annular upper support member 12.

In addition, as shown in FIG. 2, the piston rod 6
By descending A, the nozzle tube 5 and the nozzle 14
is at the lower limit position, the straight part 15b of the boss part 15 is fitted and supported by the annular lower support part 42A formed near the lower end of the lower body part 42 of the outer cylinder 4, and the upper end of the outer cylinder 4 in the longitudinal direction The outer periphery is supported reliably by the base plate 8 and the annular upper support member 12 using a two-point upper and lower support system. When the straight portion 15b is fitted to the annular lower support portion 42A, first the boss portion 15b
The male taper part 15a is inserted into the annular lower support part 42A, and the male taper part 15a thereafter functions as a guide, thereby ensuring smooth and reliable insertion.

In the above embodiment, the female taper part 7, which is a concave part, is formed on the lower surface of the bottom of the outer cylinder, and the male taper part 3, which is a convex part, is provided protrudingly from the bottom of the pit. A male taper portion 3, which is a convex portion, may be provided to protrude downward from the lower surface of the bottom of the pit, and a female taper portion 7, which is a concave portion, may be formed at the bottom of the pit.

(Effects of the invention) According to the invention, the lower surface of the bottom of the outer cylinder and the bottom of the pit that accommodates the outer cylinder are fitted and supported by the recess and the convex part so that the outer cylinder can be removed upwardly, and The base plate at the upper end of the outer cylinder is removably fixed to the upper surface of the upper end opening of the pit with a gap, which stabilizes the installation condition and increases reliability. It has the advantage that the installation work can be carried out easily and reliably.

[Brief explanation of drawings]

The drawings are longitudinal sectional front views showing one embodiment of the present invention, FIG. 1 is a longitudinal sectional front view showing the upper limit position of the nozzle tube, and FIG. 2 is a longitudinal sectional front view showing the same lower limit position. 1... Pit, 1A... Bottom, 1B... Top opening, 2... Seat, 3... Male taper part (convex part),
4... Outer tube, 4A... Bottom, 5... Nozzle tube, 6
...Cylinder device, 7...Female taper part (concave part),
8... Base plate, 9... Gap, 14... Nozzle.

Claims (1)

[Scope of utility model registration request] It has a vertically long outer cylinder with a bottom that houses a nozzle cylinder with a nozzle attached to its upper end and a cylinder device that raises and lowers this nozzle cylinder according to fluctuations in water level, and the fountain water supplied to this outer cylinder is passed through the nozzle. In a fountain device in which water is ejected from a nozzle through a cylinder, one of the lower surface of the bottom of the outer cylinder and the bottom of a pit housing the outer cylinder is provided with a recess and the other with a convex part, so that the outer cylinder can be removed upwardly. 2. A water fountain device, wherein the base plate at the upper end of the outer cylinder is removably fixed to the upper surface of the upper end opening of the pit with a gap therebetween.