JPH0515983Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention can be installed in rivers, ponds, etc. in addition to artificial pools, and the installation and removal of the fountain device is particularly easy, and the nozzle tube This invention relates to a barrel-shaped fountain device that effectively prevents vibrations.

(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 because it is suspended using a large-scale float, it is difficult to install it in shallow water areas, and the float and mooring devices 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 to be solved by the invention) This fountain device has a vertically long outer cylinder with a bottom that houses a nozzle cylinder with a nozzle attached to the upper end and a cylinder device that raises and lowers this nozzle cylinder according to fluctuations in the water level. The fountain water supplied to the outer cylinder is configured to be ejected 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 by tightening bolts, or by tightening the flange provided at the bottom of the outer cylinder to the bottom of the pit. .

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 the background of the prior art, and an object of the present invention is to provide a barrel-shaped fountain device that is easy to install and remove, and that is securely installed.

(Means for Solving the Problems) In order to achieve the above object, the barrel-shaped fountain device according to the present invention includes a nozzle tube with a nozzle attached to the upper end, and a nozzle tube that is raised and lowered according to fluctuations in water level. A cylinder device, a bottomed inner casing housing the nozzle tube and the cylinder device, and the upper part of the inner casing is inserted and fixed in a liquid-tight and removable manner, and the lower part of the inner casing is fitted and supported so that it can be removed upward. The barrel has a barrel fixed to a pit, a fountain water introduction passage is connected to the barrel, and a through hole is formed to guide the fountain water introduced into the barrel to the nozzle tube.

(Function) In the present invention, the lower part of the inner casing is fitted and supported by the barrel from above, and the upper part is inserted and fixed into the barrel in a liquid-tight and removable manner, so that the inner casing can be centered with respect to the barrel. Moreover, it is supported at the top and bottom.

In addition, by releasing the fixation of the internal casing to the barrel, it is possible to remove the fountain device upwards with only the barrel remaining, and when reinstalling, the lower part of the internal casing can be fitted and supported by the barrel from above. By fixing the upper part of the inner casing to the barrel, centering and two-point support at the top and bottom can be achieved again.

(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 river bottom or a pond bottom, and a pit 1 is dug in the water bottom A, and a barrel 3 to which a fountain water introduction passage 2 is connected is inserted and fixed into the pit 1. That is, the barrel 3 is suspended by fixing the upper end flange portion 3A of the barrel 3 supported by the upper end surface 1A of the pit 1.

The lower part of a vertically elongated internal casing 4 with a bottom is fitted into and supported by the barrel 3 from above, and the upper part of the internal casing 4 is inserted and fixed in a fluid-tight and removable manner. That is, the internal casing 4 has a downwardly widening female taper part 5 formed on the lower surface of its bottom 4A, and this female taper part 5 is formed into a male taper part that projects upward from the bottom of the barrel 3 and is tapered in diameter. 6
The lower surface of the base plate 7 attached to the upper end of the inner casing 4 and extending radially outward is provided with a vertical gap 8 with respect to the flange portion 3A of the barrel 3. The base pullet 7 is fixed to the flange portion 3A with the mounting bolts 9, and the base portion 7A of the base plate 7 is inserted into the center hole of the flange portion 3A in a fluid-tight and removable manner.

The inner casing 4 has a nozzle cylinder 10 with an open bottom end.
is internally movable and liquid-tight, and also includes a cylinder device 11 for raising and lowering the nozzle tube 10. The internal casing 4 consists of an upper body part 41 and a lower body part 42, which are liquid-tightly connected by a joint part 43, and have a female taper part whose diameter decreases upward on the inner periphery near the lower end of the upper body part 41. A lower support part 45 is formed extending from the inner periphery near the lower end of the lower body part 42, the diameter of which decreases downward. An annular upper support member 12 that can move the nozzle tube 10 up and down in a liquid-tight manner is fitted and fixed to the upper end of the base plate 7. As a result, the center hole 7B of the base plate 7 and the center hole 12A of the upper support member 12 form an upper support part 13, and the nozzle cylinder 10 is supported by this upper support part 13 in a freely axially movable and liquid-tight manner. .

The cylinder device 11 is attached to the inner casing 4 by appropriately fixing it to the bottom upper surface of the inner casing 4.
The upper end of the piston rod 11A is integrally connected to the nozzle cylinder via a connecting member 14. Therefore, as the piston rod 11A moves up and down due to the operation of the cylinder device 11, the nozzle tube 10 moves up and down within the range of the stroke amount H.

The nozzle tube 10 has an open bottom end, and a nozzle 15 is attached to the top end. And, on the outer periphery of the lower end part, there is an upper male tapered part 1 whose diameter decreases upward.
6a and a lower male tapered portion 16 whose diameter decreases downward.
A boss portion 16 is provided in which b is formed in order from the top. Further, a flange portion 16C having a male tapered portion 16c whose diameter decreases upward is provided slightly below the center portion, and a female taper portion 7a whose diameter decreases downward in correspondence with this flange portion 16C; That is, a female tapered part 7a that functions as an upper support part similar to the upper support part 13 is provided around the lower end of the center hole 7b of the base plate 7.

Fountain water introduced from the fountain water introduction passage 2 into the barrel 3 by the pump is guided to the nozzle cylinder 10 through a plurality of slit-shaped through holes 17, 17 formed in the lower body part 42 of the inner casing 4, and is introduced into the nozzle tube 10. It is ejected from. In the figure, reference numerals 18 and 19 indicate 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,
Hydraulic piping 18 supplies oil according to the amount of rise in the water level.
from the piston rod 11A to the cylinder lower chamber.
Then, when the nozzle tube 10 is pushed up and the water level falls, oil is guided from the hydraulic pipe 19 to the upper cylinder chamber according to the amount of fall of the water level, and the piston rod 11A and the nozzle tube 10 are pushed down.

In the above configuration, the fountain device has a female taper portion 5 formed on the lower surface of the bottom portion 4A of the inner casing 4, which opens downwardly and widens toward the end, and which protrudes from the bottom portion of the barrel 3 and whose diameter decreases upward. By fitting into the male taper part 6 from above, the bottom part 4A of the internal casing 4 is supported by the barrel 3, and the base plate 7 attached to the upper end of the internal casing 4 and extending radially outward is attached to the barrel 3.
Since it is supported at two points, upper and lower, which are fixed to the flange portion 3A, the installation state is stable and highly reliable. Also, attach the bottom surface of base plate 7 to barrel 3.
Since the gap 8 is made to correspond to the upper surface of the flange portion 3A, and it is fixed with the mounting bolt 9, the degree of tightening of the mounting bolt 9 can be adjusted by the gap 8, and therefore the male taper The part 6 can be installed in the female taper part 5 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 9 using a manual tool such as a box spanner to release the fixation of the base plate 7, and then lift it up. This removal work of the mounting bolts 9 can be carried out very easily underwater regardless of the depth of the water. When reinstalling after maintenance, the internal casing 4 is removed from the flange part 3 of the barrel 3.
A, the base part 7A of the base plate 7 is fitted into the center hole of the flange part 3A, and the female taper part 5 is fitted into the male taper part 6 from above. Centering is performed, and then the mounting bolts 9 are tightened using the hand tool. This tightening work of the mounting bolts 9 can also be performed very easily underwater regardless of the depth of the water.

On the other hand, due to the upward movement of the cylinder device 11, the piston rod 11A rises, and just before reaching its stroke upper limit, as shown in FIG. The male tapered part 16a is the central support part 4 of the inner casing 4.
4 from below, and the male tapered portion 16C firmly fits into the female tapered portion 7a from below. Therefore, the distance between the female tapered portion 7a as the upper support portion and the center support portion 44 is short, and the nozzle tube 10 is connected to the upper and center support portions 7 with the short distance.
Even if it overhangs with a and 44 as a fulcrum, it is possible to effectively prevent the nozzle tube 10 and the nozzle 15 from vibrating in the longitudinal axis swinging direction, so the overall length, that is, the height dimension of the fountain device can be kept small and the fountain device can be downsized. becomes possible.

On the other hand, when the piston rod 11A descends due to the downward movement of the cylinder device 11 and reaches the lower limit of its stroke, the lower male part of the boss part 16 provided at the lower end of the nozzle tube 10 opens as shown in FIG. The tapered portion 16 b fits into the lower support portion 45 of the inner casing 4 , and the outer periphery of the upper end portion of the inner casing 4 is supported by the upper support portion 13 . In this case, the distance between the upper support part 13 and the lower support part 45 is relatively large, and the nozzle cylinder 10 does not overhang, so that the upper support part 13 and the nozzle cylinder 10
Even if there is a small gap between the nozzle tube 10 and the nozzle tube 10, the vibration can be effectively prevented.

(Effects of the invention) According to the invention, the lower part of the internal casing is fitted and supported by the barrel inserted and fixed in the pit so that it can be removed upward, and the upper part is inserted and fixed in a liquid-tight and removable manner. This makes it possible to stabilize the installation state and increase reliability, and also to make centering work very easy, and to remove the device very easily and quickly.

[Brief explanation of the drawing]

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, 2... Fountain water introduction passage, 3...
...Barrel, 3A...Flange part (insert and fix the upper part of the internal casing), 4...Internal casing,
5... Female taper part (fitting and fixing the lower part of the internal casing), 6... Male taper part (fitting and fixing the lower part of the internal casing), 10... Nozzle tube, 11... Cylinder device, 15... Nozzle , 17...through hole.

Claims (1)

[Scope of utility model registration request] A nozzle tube with a nozzle attached to its upper end, a cylinder device that raises and lowers the nozzle tube according to fluctuations in water level, a bottomed inner casing housing the nozzle tube and cylinder device, and a top part of the inner casing that is liquid-tight. and a barrel which is removably inserted and fixed, and which is fixed to the pit by fitting and supporting the lower part of the inner casing in a removable manner upward, and a fountain water introduction passage is connected to the barrel, and a fountain water introduction passage is connected to the barrel, and A barrel-shaped fountain device characterized in that a through hole is formed to guide introduced fountain water to a nozzle tube.