JPH01168366A - Fountain nozzle - Google Patents

Abstract

PURPOSE:To make the performance of a fountain full of fancy, by sending up a jet of water from a water nozzle of a rotating member to a height commensurate with the pressure of a water stream delivered into a cylindrical nozzle and acting a stream of water delivered into a separating chamber on an impeller provided on a rotating shaft of the rotating member. CONSTITUTION:A water nozzle 17 is formed at an eccentric location of a rotating member 16 rotatably disposed at the open end 3 of a cylindrical nozzle 1. A rotating shaft 19 of this rotating member 16 extends into a separating chamber S2 partitioned off from an interior space S1 of the cylindrical nozzle 1. An impeller 23 which is caused to rotate by the force of a water stream delivered into the separating chamber S2 is provided on the extension 21 of the rotating shaft 19 and also water entrance openings 6 and 14 are provided on the cylindrical nozzle 1 and the separating chamber S2, respectively. This permits the control of the rotation rate of the rotating member and the pressure of the water stream delivered into the cylindrical nozzle on a separate basis. Therefore, this nozzle can produce various artificial flows of water, making the performance of a fountain full of fancy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fountain nozzle capable of spouting a spiral water column.

[Conventional technology]

It is known that a column of water that is vigorously jetted up from a water hole that rotates along a circular path traces a spiral trajectory.

Conventionally, a fountain nozzle that spouts out a water column that traces a spiral trajectory has the configuration described below.

One method is to arrange the rotating member having the water hole at the tip of the nozzle tube, and while rotating this rotating member with the power of an electric motor, the water sent into the nozzle tube is passed through the water hole of the rotating member. It's something that blows up. Since any type of fountain nozzle can separately control the rotational speed of the rotating member and the pressure of the water flow sent into the nozzle tube, the height of the water column spouted from the small hole and the spiral trajectory drawn by the water column can be controlled in various patterns. It has the advantage of being able to express various variations as a fountain, allowing you to fully enjoy the fun of the fountain.

Another method is to arrange a rotary member having the water hole at the tip of the nozzle tube, and rotate the rotary member using the force of the water flow sent into the nozzle tube, so that the water flow is transmitted through the water hole. It is something that gushes out.

[Problem that the invention seeks to solve]

However, the former type of fountain nozzle, in which a rotating member is rotated by the power of an electric motor, requires extra power to operate the electric motor in addition to the power to pump water to the nozzle tube. Not only does installing a motor complicate the equipment, but it also requires a watertight partition between the inside of the nozzle tube and the components on the electric motor side, which requires relatively frequent maintenance. watertight conditions, which increases maintenance costs and
There is a problem in that the lubricating oil held in the rotating parts may mix with the water column sprayed up from the small holes.

On the other hand, the latter type of fountain nozzle, which uses the force of the water flow sent into the interior of the nozzle tube to rotate a rotating member, does not have the above-mentioned problems that the former has.
Since the rotational speed of the rotating member rotated by the force of the water flow and the height of the water column spouted from the small hole are correlated, it is difficult to express various variations of the fountain, and there is a problem that the fountain lacks interest.

As mentioned above, conventional fountain nozzles have advantages and disadvantages.

This invention was made in view of the above problems, and although it solves the problems of the former by rotating a rotating member using the force of water flow, it also solves the problems of the latter. It is an object of the present invention to provide a fountain nozzle that can be used to express various variations as a fountain. - [Means for solving the problem] In the fountain nozzle of the present invention, a water hole is provided at an eccentric location of a rotary member rotatably disposed at the tip opening of a nozzle tube, and the rotation axis of the rotary member is An impeller that extends into a compartment partitioned off from the internal space of the nozzle tube and is rotated by the force of the water flow sent into the compartment is provided on the extension of the rotating shaft. In addition, a water inlet is provided in each of the nozzle tube and the compartment.

[For production]

In the fountain nozzle of the present invention, a water stream is sent into the nozzle tube at a predetermined pressure from the water inlet provided in the nozzle tube, and a water stream is sent into the compartment from the water inlet provided in the compartment. It will be done. A water column is ejected from the water hole of the rotating member to a height corresponding to the pressure of the water flow sent into the nozzle tube, and the impeller installed on the rotating shaft of the rotating member sends water into the compartment. The water flow acts,
The impeller rotates at a predetermined speed by the force of the water flow, regardless of the height of the water column.

〔Effect of the invention〕

Since the fountain nozzle of the present invention uses the power of water flow to rotate a rotating member, it requires less electric power to operate the electric motor, unlike a conventional fountain nozzle that uses the power of an electric motor to rotate a rotating member. This completely eliminates the problems of complicating the equipment due to the need for an extra electric motor and installing an electric motor, as well as increased maintenance costs and the possibility that lubricating oil could get mixed into the water column spewed up from the small holes. Nevertheless, the rotational speed of the rotating member and the pressure of the water flow sent into the nozzle tube can be controlled separately, which is an advantage of conventional fountain nozzles that utilize the power of an electric motor. Since it has the advantage that the spiral trajectory can be set in various patterns, various Balinese Chiron fountains can be expressed and the fun of the fountain can be fully enjoyed. As described above, it can be said that the fountain nozzle of the present invention is excellent not only in terms of power saving, but also in terms of the safety required for fountains and the enjoyment of viewing.

〔Example〕

FIG. 1 is a sectional view of a fountain nozzle according to an embodiment of the invention. Reference numeral 1 denotes a nozzle cylinder, and a ring-shaped protrusion 2 that projects inward is provided at the tip of the nozzle cylinder, and a portion surrounded by the protrusion 2 forms an upwardly directed tip opening 3. A partition plate 5 having a boss portion 4 projecting upward at the lower end of the nozzle tube 1
is fixed. Further, the nozzle tube 1 is provided with a water flow hole 6, and a water flow is sent into the internal space S+ of the nozzle tube 1 from a water source at a predetermined pressure by a pump 8 through a water pipe 7 connected to the water flow hole 6. +7. is a control valve interposed in the water pipe 7, and various types of valves such as electric valves, hydraulic valves, mechanical air valves, etc. are adopted as appropriate.

A hollow cover 10 is provided below the partition plate 5. This cover 10 consists of a plate body 12 with a downward facing boss 11 and a cylindrical member 13, and its interior is a compartment S! which is partitioned from the internal space S1 of the nozzle cylinder 1 by the partition plate 5. It is said that Then, the cylindrical member 1
A water inlet 14.14 is provided at a predetermined location of 3, and a water flow is sent into the compartment S2 from the water source at a predetermined pressure by the pump 8 through the water pipe 15 connected to the water inlet 14.14. It has become. V2 is a control valve interposed in the water pipe 15, and the above-mentioned electric valve or the like is appropriately employed. Water inlet 14 provided in compartment S2
Whether the number is two as shown in the illustration or one,
Alternatively, the number may be three or more.

Reference numeral 16 denotes a rotating member, which has a water hole 17 at an eccentric location.

The water hole 17 may be a circular hole as shown in Fig. 3, an arc-shaped groove as shown in Fig. 4, or any other shape. Even if the two locations are displaced by 180 degrees as shown in Figures 3 and 4,
- locations, or other locations, for example, three locations equally spaced or a plurality of locations beyond that. The rotating member 16 in the illustrated example has a flange 1 that protrudes outward in the lower half.
It has 8. Then, the small diameter upper half of the rotating member 16 is inserted into the nozzle cylinder 1 while maintaining a small gap between the rotary member 16 and the writing piece 2.
is disposed in the tip opening 3 of the projecting piece 2, and the flange 18 is disposed in the tip opening 3 of the
It is opposed to this protruding piece 2 with a slight gap between the two. Reference numeral 19 denotes a rotating shaft of the rotating member 16, which is rotatably supported by a bearing 20 held by the boss portion 4 of the partition plate 5, and whose lower end extends to the inside of the compartment S2, An impeller 22 is provided in the extending portion 21 .

The impeller 22 rotates under the force of the water flow sent into the compartment S2 from the water inlet 14.14.
The rotation of the impeller 22 passes through the rotating shaft 19 to the rotating member 16.
can be conveyed to. Although the cross-sectional shape of the impeller 22 is illustrated in FIG. 2, the blade shape of the impeller 22 may have a shape other than a rotated shape, for example, a plurality of blades may simply be provided radially.

Note that in FIG. 2, arrow F indicates the direction of water flow.

A cover guide 23 is attached to the tip of the nozzle tube 1. This cover guide 23 covers the gap between the protruding piece 2 and the upper half of the rotating member 16 from above, and has the role of guiding water coming out from this gap toward the outer surface of the nozzle tube l. .

Reference numeral 24 denotes a water seal portion having a labyrinth structure constituted by a spiral strip provided on the boss portion 11 of the plate body 12 and a spiral strip provided on the rotating shaft 19, and is a water seal portion having a labyrinth structure. The water on the partition plate 5
It has a function of preventing the bearing 20 from entering the inside of the boss portion 4 and having an adverse effect on the bearing 20.

In such a fountain nozzle, the water flow sent from the water flow volume 6 into the internal space S of the nozzle tube 1 at a predetermined pressure is blown upward from the water hole 17 of the rotating member 16.

The height of the jet at that time changes depending on the pressure of the water flow. In addition, some of the water sent into the internal space S1 is transferred to the nozzle tube 1, the protruding piece 2, and the flange portion 18 of the rotating member 16.
It flows out to the upper part of the nozzle cylinder 1 through the gap between the projecting piece 2 and the upper half of the rotating member 16, and falls along the outer surface of the nozzle cylinder 1 guided by the cover guide 23. At this time, the water filling the gap forms a water film, and the water film acts as a lubricant to smoothly rotate the rotating member 16.

Furthermore, there is an advantage that surplus water that cannot be spouted out from the water hole 17 due to such water leakage is discharged. On the other hand, when a water stream is sent into the compartment S2 from the water inlet 14.14, the impeller 22 rotates at a speed corresponding to the force of the water stream, and the rotating member 16 rotates accordingly.

Therefore, when a water stream is simultaneously sent into the internal space S of the nozzle tube 1 and the compartment S2, and the rotating member 16 is rotated while spouting a water column from the water hole 17, the water column sprayed into the air follows a spiral trajectory. draw.

Furthermore, if the water flow sent into the compartment S2 and the water flow sent into the internal space S of the nozzle tube 1 are controlled separately,
The rotational speed of the rotating member 16 and the height of the water column spouted up from the water hole 17 change independently of each other, and the spiral trajectory drawn by the water column is set in various patterns, thereby expressing various variations as a fountain. In order to separately control the water flow sent into the compartment St and the water flow sent into the internal space S of the nozzle tube 1, for example, control valves V, .
The opening degree of V may be controlled by the control device 25 according to a predetermined program.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a fountain nozzle according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along line A-A in Fig. 1, and Figs. 3 and 4 are the shapes and locations of water holes. FIG. DESCRIPTION OF SYMBOLS 1... Nozzle tube, 3... Tip opening, 6... Water inlet of nozzle tube, 14... Water inlet of compartment, 16...
・Rotating member, I7... Water hole, 19... Rotating shaft, 21
... Extended part of rotating shaft, 22... Impeller, SI...
Internal space of the nozzle cylinder, S2... compartment. 1+ Figure 13 Figure 29

Claims (1)

[Claims] (1) A water hole is provided at an eccentric location of a rotating member rotatably disposed at the tip opening of the nozzle tube, and the rotation axis of this rotating member is inside a compartment partitioned off from the internal space of the nozzle tube. An impeller is provided at the extending portion of the rotating shaft and is rotated by the force of the water flow sent into the compartment, and a water inlet is provided in each of the nozzle tube and the compartment. A fountain nozzle characterized by being provided with a fountain nozzle.