JPH02218460A - Fluid rotating nozzle - Google Patents

Abstract

PURPOSE:To simplify a structure, to reduce trouble and to facilitate maintenance by providing a fluid jet orifice to the top part of a hollow bottomed conical body and providing a supply port capable of supplying a fluid into the conical body in the tangential direction thereof to the outer peripheral part of the conical body on the bottom side thereof. CONSTITUTION:A nozzle main body 1 is formed into a hollow conical shape. A fluid jet orifice 5 is provided to the top part of this nozzle main body 1 in the direction of the center line of the aforementioned conical shape. Further, a supply port 6 capable of supplying a fluid into the nozzle main body 1 in the tangential direction thereof is provided to the outer peripheral part of the nozzle main body 1 on the bottom side thereof. As a result, since rotatory force can be given to a water stream by the water stream itself without using a special rotary mechanism, a structure is simplified and trouble is reduced and maintenance can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a right-handed fluid nozzle for applying rotational force to a fluid such as water jetted from a spout.

Prior Art This type of nozzle is used for purposes such as fountains, irrigation, and nausea. Conventionally, water is ejected from the nozzle body in a direction that makes an angle with the radial direction, and the reaction causes the nozzle body to There are some that are designed to rotate, and the rotation of this nozzle body causes the fountain to open in the shape of flower petals.

The invention attempts to solve a! However, in a device in which the nozzle body is rotated in this way, the structure of the nozzle is complicated due to the rotation l1ta, and there are problems in that this rotation mechanism is prone to failure and its maintenance is difficult. .

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a right-turning fluid nozzle that has a simple structure, is less prone to failure, and is easy to maintain.

Means for Solving the Problems In order to achieve the above object, the present invention forms a nozzle body in the shape of a hollow cone, and provides a fluid ejection port in the direction of the center line of the cone at the top of the nozzle body, and A supply port that can supply fluid tangentially into the nozzle body is provided on the outer peripheral portion of the bottom side of the nozzle body.

Operation According to this configuration, the fluid that enters the interior of the nozzle body from the supply port in a tangential direction rotates inside the conical nozzle body. Then, as it goes toward the jet nozzle provided at the top of the nozzle body, it is constricted on the inner surface of the nozzle body, resulting in a high rotational speed. Therefore, by ejecting the fluid from the spout at such a rotational speed, the fluid opens in the shape of a flower petal.

Embodiment FIGS. 1 and 2 show the first embodiment of the fluid right-turning nozzle of the present invention.
An example is shown. Here, 1 is a nozzle main body, which is formed into a hollow conical shape and has a water chamber 2 inside thereof. 3 is its side plate, and 4 is its bottom plate.

A fluid spout 5 is formed at the top of the nozzle body 1 and opens toward the center rod of the nozzle body 1 . A fluid supply port 6 is formed in the outer peripheral portion of the bottom side of the nozzle body 1, that is, in the portion of the side plate 3 near the bottom plate 4. The supply port 6 is constituted by a pipe body 7 tangentially connected to the side plate 3, and is capable of supplying fluid into the water chamber 2 in the tangential direction.

Next, the operation of the fluid rotating nozzle having the above configuration will be explained by taking as an example a case where the fluid rotating nozzle having the above configuration is used as a fountain nozzle. When water 8 as a fluid is sent to the supply port 6, this water 8 enters the interior of the water chamber 2 from the supply port 6 in a tangential direction, is guided by the inner surface of the water chamber 2, and rotates.

The water to which this rotational force has been applied is squeezed on the inner surface of the conical water chamber 2 as it moves toward the spout 5, and is given a large tangential velocity a Cu. The water 8 is ejected from the ejection port 5 in the direction of the central axis of the nozzle body 1, but as it rotates with a large tangential speed Cu as described above, it opens in the shape of petals due to centrifugal force. That is, as shown in FIG. 1, water 8 from the spout 5 is ejected as a cylindrical water film 9 due to centrifugal force, and this water 11a9 spreads into petal shapes due to the centrifugal force. Then, it gradually becomes bulky and breaks off, becoming a small water film 10 that is scattered around.

By making the water film 10 smaller in this way, the sound of the water film 10 falling onto the water surface becomes smaller. Further, the water 8 can be sprayed over a wide range due to centrifugal force.

In addition, the tangential velocity Cu of the water inside the nozzle body gradually increases as it goes to the top within the conical surface. Therefore, the flow velocity at the supply port 6 can be reduced, and a large nozzle can be used with a pump with a low head and low horsepower. Exit tangential speed r! IcuflF can be done.

Further, a cone for rectification may be further provided within the nozzle body. In addition, in the following examples, the tangential velocity C
The shape of the nozzle body for providing u does not have to be conical.

FIG. 3 shows a second embodiment of the fluid right-turning nozzle of the present invention.

This nozzle is of a type that supplies water 8 into the water chamber 2 from a supply port 6. In this nozzle, an air supply hole is formed in the center of the bottom plate 4, and an air supply port 1 is formed in the center of the bottom plate 4.
Air 12 is introduced into the water chamber 2 in the axial direction of the nozzle body 1.
can be supplied.

J3 is located inside the water chamber 2, and at a position near the air supply port 11 and facing the air supply port 11, the air 12 is directed outward in the radial direction so that the supplied air 12 does not flow tangentially to the jet port 5. A baffle plate 13 is provided for expanding the direction.

In such a configuration, when water 8 is supplied from the supply port 6 and air 12 is supplied from the air supply qtt, the air 12 is expanded by the baffle plate 13 and is jetted together with the water 8 rotating inside the water chamber 2. It is ejected from outlet 5. At this time, since water 8 has a higher specific gravity than air 12, a large centrifugal force acts on it, so water 8 is on the outside and air 12 is
becomes inside and is ejected.

Since the water 8 from the spout 5 has a tangential velocity Cu, it forms petal-shaped water II9. At this time, if the flow rate of the air 12 jetting out from the inside is high, the pressure at this air flow portion will be lower than the surrounding atmospheric pressure, and the opening angle θ of the water film 9 will be smaller than when the air 12 is not supplied. air 12
As the supply value of is increased, the velocity of the air flow from the jet a5 increases, and the opening angle θ finally becomes zero. When the amount of air Φ is further increased, the water film 9 is not formed and the water 8 is ejected in the form of mist. Therefore, by changing the supply value of the air 12, the appearance of the fountain can be freely changed. Furthermore, by illuminating with red lights, it is possible to create a volcano-like effect along with the sound of air being discharged from the nozzle outlet. Note that if a gas such as natural gas is used in addition to the air 12, water and flame can play together.

FIG. 4 shows a third embodiment of the right-turning fluid nozzle of the present invention.

Here, the nozzle main body 1 is submerged in water up to the vicinity of the fluid spout 5, and the water suction port 14 is formed at a position slightly below the water surface and slightly below the open end of the fluid spout 5.

That is, inside the nozzle body 1 in front of the open end of the fluid jet port 5, the water 8 has a large tangential velocity Cu, and its pressure is small. Therefore, surrounding water is sucked in from the water suction port 14 due to the ejector effect, and therefore the amount of water ejected from the spout 5 increases.

FIGS. 5 and 6 show the fourth part of the fluid right-turning nozzle of the present invention.
An example is shown. In this embodiment, the nozzle body 1 is made of a transparent body such as an acrylic plate, and a colored transparent disc 15 is provided at the inner bottom of the nozzle body 1. This colored transparent disk 15 is arranged parallel to the bottom plate 4, is rotatably supported by an underwater bearing 16, and has blades 17 so that it can be rotated by the water flow from the supply port 6. The colored transparent disk 15 is color-coded in the circumferential direction, for example, the one shown in FIG.
-D is color coded. The four colors A to D can be, for example, red for color A, green for color B, yellow for color C, and blue for color. Below the bottom plate 4, an underwater light 18 is provided facing upward.

According to such a configuration, the illumination light from the underwater light 18 is colored by passing through the colored transparent disc 15, but as the colored transparent disc 15 rotates with the water flow,
The color of the lighting changes.

FIG. 7 shows a fifth embodiment of the fluid right-turning nozzle of the present invention.

Here, the opening end of the fluid jet port 5 is arranged slightly below the water surface, for example, at a position 5 to 10M below the water surface.

According to such a configuration, the jetted water 8 having a large tangential velocity Cu involves the surrounding water, and therefore, the amount of water jetted onto the water surface becomes large as in the case of FIG. 4. Furthermore, you can expect the effect of whitening the fountain by drawing in air.

FIG. 8 shows a sixth embodiment of the fluid rotating nozzle of the present invention.

Here, a trumpet-shaped guide 19 is provided following the fluid ejection port 5 to push and spread the water film 9 ejected from the fluid ejection port outward.

With such a configuration, a high-speed water stream with a large tangential velocity Cu flows along the outer wall of the guide 19. That is, the water film 9 based on this water flow becomes a wall jet and spreads, resulting in a large opening angle θ.

In addition, in the above, the case where the fluid rotating nozzle according to the present invention is used for a fountain is illustrated, but in addition to this,
It can be used for many purposes such as irrigation and aeration.

When used for irrigation, it produces a smaller water film than conventional sprinklers, which has the effect of not washing away soil or damaging crops.

When used for aeration, a water film 10 ejected from the fluid ejection port 5 may be sprinkled on the water surface.

Alternatively, by arranging the nozzle body 1 underwater and supplying air to the supply port 6, the above-mentioned tangential velocity Cu is imparted to the air flow jetted into the water from the jet port 5, thereby performing underwater aeration. Good too.

When such underwater aeration is performed, the air bubbles generated are small and spread over a wide range, resulting in a good aeration effect.

Effects of the Invention As described above, according to the present invention, since the water flow itself can apply rotational force to the water flow without using a special rotation mechanism, the structure is simple, there are fewer failures, and
Furthermore, maintenance can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view from the front of a fluid right-turning nozzle according to a first embodiment of the present invention, FIG. 2 is a sectional view from a plan view of the fluid right-turning nozzle of FIG. 1, and FIGS. 6 is a plan view of the colored transparent disk in FIG. 5, and FIGS. FIG. 5 is a cross-sectional view of a main part of the fluid rotation nozzle of the fifth and sixth embodiments. DESCRIPTION OF SYMBOLS 1... Nozzle body, 5... Fluid ejection port, 6... Supply port, 8... Water (fluid) u... Tangential velocity.

Claims (1)

[Claims] 1. The nozzle body is formed into a hollow conical shape, and a fluid ejection port is provided at the top of the nozzle body in the direction of the center line of the cone, and the inside of the nozzle body is provided at the outer peripheral portion on the bottom side of the nozzle body. A rotating fluid nozzle characterized by having a supply port capable of supplying fluid in a tangential direction.