JP2547233Y2 - Nozzle structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle structure, in particular, a control fluid is spirally injected into a supply passage of a main fluid to generate an adhering flow to generate a negative pressure. The present invention relates to a nozzle structure in which a body is supplied in a spiral shape, and at this time, a shearing action is generated on aggregated particles in a main fluid to disperse the aggregated particles.

[0002]

2. Description of the Related Art In general, when agglomerated particles are located inside a main fluid flowing through a supply passage, a device for dispersing the agglomerated particles after passing through a nozzle is provided. Agglomerated particles inside are dispersed.

[0003] Therefore, an apparatus for dispersing aggregated particles in the main fluid is required, which has the problem that the whole becomes large and the whole becomes expensive.

An object of the present invention is to cause a control fluid to act on a supply passage through which a main fluid flows, so that the main fluid flows spirally in the supply passage, and at this time, aggregate particles in the main fluid are dispersed. It is an object of the present invention to provide a nozzle structure.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention proposes that the diameter is gradually reduced toward the connecting portion.
In addition , from the sub-tube into which the main fluid flows, and the connection portion with the sub-tube
The part inside is also the minimum diameter, and the part with the minimum diameter from the connection part
And gradually reduce the diameter toward
A main pipe having a diameter gradually increasing inward, and a plurality of spiral grooves communicating with a control fluid supply section provided on an outer periphery and communicating with a supply path are provided in the connection section; A wall surface extending to the inner surface on the downstream side of the main fluid is formed in a curved portion that generates the Coanda effect, and is formed at the time of supply of the control fluid.
Spiral suction of the main fluid containing aggregated particles from the secondary pipe
In addition, a nozzle structure is characterized in that the nozzle structure is dispersed by applying a shearing action .

[0006]

[0007]

[Function] This invention adopts the above-mentioned means,
Control fluid supplied to the control fluid supply, by flowing into the supply passage through a plurality of helical grooves, the jet flow of the control fluid is forced spirally. Then, when the control fluid forms an adherent flow on the surface of the curved portion of the main pipe, the inside of the main pipe becomes a negative pressure and sucks the main fluid from the sub-pipe.
Since the flow of the main fluid to be sucked is governed by the flow of the control fluid, it naturally has a spiral shape. Therefore, the agglomerated particles in the main fluid are subjected to shearing action in the high-speed spiral airflow, whereby the agglomerated particles are dispersed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. FIGS. 1 and 2 show a nozzle structure according to the present invention, which comprises a main pipe 1 and a sub pipe 2.
It is composed of

The main pipe 1 has a thickness having a cavity 3 at the center, and an annular groove 4 is formed at the end so as to surround the cavity 3. An outer peripheral side of the groove 4 is a step 4a. The groove 4 communicates with a control fluid inlet 5 provided on the peripheral surface of the end.

The end formed between the groove 4 and the cavity 3 is formed in a curved portion 6, while the end of the cavity 3 connected to the curved portion 6 gradually becomes smaller in diameter. In addition to being formed on the curved portion 7, the inner portion is sequentially formed with a larger diameter through the minimum diameter portion.

On the other hand, the auxiliary pipe 2 has a cylindrical shape whose diameter is gradually reduced as it reaches the opening, and a flange 9 is formed in the opening 8 so as to expand in the radial direction. A projection 10 surrounding the opening 8 at a predetermined distance is provided integrally, and an annular projection 11 having a predetermined width is provided on the flange 9 around the opening 8. The protrusion 11 has a plurality of grooves 12
Are provided spirally.

When connecting the main pipe 1 and the sub pipe 2, a step 4 a provided on the outer peripheral side of the groove 4 of the main pipe 1
A protrusion 10 provided on the flange portion 9 of the sub pipe 2 is located, and a shim 13 for maintaining an interval between the main pipe 1 and the sub pipe 2 is positioned between the main pipe 1 and the sub pipe 2. In this state, the main pipe 1 and the sub pipe 2 are fixed with bolts 14 and the main pipe 1
And the sub-tube 2 are concentrically spaced at a fine interval.

Then, the curved portion 6 formed between the groove 4 of the main pipe 1 and the space 3 abuts on the projection 11 provided at the opening 8 of the sub pipe 2, and accordingly, the main pipe 1 The inside of the groove 4 and the inside of the space 3 of the main pipe 1 and the inside of the sub pipe 2, that is, the supply path is defined by a plurality of spiral grooves 12 of the projection 11 provided in the opening 8 of the sub pipe 2. The communication is established.

When the control fluid A of high-pressure gas is introduced through the inflow port 5 provided on the side of the main pipe 1 after assembling as described above, the control fluid A reaches the groove 4 of the main pipe 1 and this groove 4 4 is made to function as an air pool, and is injected into the inside through a plurality of spiral grooves 12 provided in the projection 11 of the sub pipe 2 as shown in FIG.

In this case, since the plurality of grooves 12 are provided spirally, the jet flow of the supplied control fluid A is spirally forced.

Then, the control fluid A, which is a high-pressure gas, spirals to form an adherent flow on the surface of the curved portion 7 of the main pipe 1,
That is, the Coanda effect occurs. Then, the central portion of the main pipe 1 becomes negative pressure, whereby air as a secondary gas is sucked from the sub pipe 2 side. In this case, since the secondary gas is governed by the flow of the control fluid, the secondary gas naturally flows into the main pipe 1 in a spiral shape.

Therefore, if the auxiliary pipe 2 is set on the secondary gas side, the aggregated particles in the supplied main fluid B, which is on the secondary gas side, are severely sheared in the high-speed spiral airflow, whereby The agglomerated particles will be dispersed and this will be done continuously.

FIGS. 3 and 4 show another embodiment of the nozzle structure according to the present invention. In this embodiment, the one shown in the above embodiment is the opening 8 of the sub pipe 2 which is the main fluid supply side.
A protrusion 11 is provided on the peripheral edge of the main pipe 1, and a plurality of grooves 12 are spirally provided on the protrusion 11, so that an adhesion flow is generated on the surface of the curved portion 7 of the main pipe 1. In the embodiment shown in FIG. 1, a plurality of grooves 22 are spirally provided in a curved portion 6 which is an end of the main pipe 1.

Even in such a case, the control fluid A flows as a jet through the plurality of spiral grooves 22 provided in the curved portion 6 and adheres to the surface of the curved portion 7 of the main pipe 1. , That is, the Coanda effect occurs.
Then, a negative pressure is applied to the central portion of the main pipe 1, whereby
The air as the next gas is sucked from the auxiliary pipe 2 side.
In this case, since the secondary gas is governed by the flow of the control fluid, the secondary gas naturally flows into the main pipe 1 in a spiral shape.

If the auxiliary pipe 2 is set on the secondary gas side, the agglomerated particles in the supplied main fluid B on the secondary gas side are severely sheared in a high-speed helical airflow. The agglomerated particles will be dispersed and this will be done continuously.

[0021]

According to the present invention, as described above, the high-pressure control fluid is helically forced into the supply path through a plurality of spiral grooves and flows as a jet.
Adhesion flow is generated in the curved part of the pipe, and the pressure inside the main pipe becomes negative.
An under effect occurs. Therefore, due to the Coanda effect
Having agglomerated particles from the secondary pipe due to the negative pressure generated
Since the fluid is drawn in a spiral shape, the high-speed spiral airflow
As a result, the aggregated particles are subjected to the shearing action, and the aggregated particles are surely dispersed.

Moreover, suction of the main fluid having the aggregated particles,
In addition, since it is only necessary to supply the high-pressure control fluid to disperse the aggregated particles, the whole structure is very simple and the whole can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a nozzle structure according to the present invention.

FIG. 2 is a schematic view showing a protrusion provided at an opening of a sub-tube shown in FIG.

FIG. 3 is a schematic view showing a main pipe of another embodiment of the nozzle structure according to the present invention.

FIG. 4 is a schematic longitudinal sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main pipe 2 ... Sub pipe 3 ... Vacancy 4 ... Groove 4a ... Step part 5 ... Inflow port 6, 7 ... Curved part 8 ... Opening part 9 ... Flange part 10 ... Projection part 11: Projection 12, 22: Groove 13: Shim 14: Bolt A: Control fluid B: Main fluid

Claims (1)

(57) [Scope of request for utility model registration] 1. The method according to claim 1, wherein the diameter is sequentially reduced toward the connecting portion.
And a connecting portion between the sub-tube into which the main fluid flows and the sub-tube.
The inner part forms the minimum diameter, from the connecting part to the part with the minimum diameter
The diameter gradually decreases toward the inside, and
A main pipe that sequentially increases in diameter toward the direction, communicates with a control fluid supply section provided on the outer periphery, and provides a plurality of spiral grooves communicating with the supply path in the connection section, and from the groove, A wall surface reaching the inner surface on the downstream side of the main fluid is formed in a curved portion that causes a Coanda effect, and the supply of the control fluid is performed when the control fluid is supplied.
When the main fluid with aggregated particles is sucked in spiral form from the secondary pipe
Both have a nozzle structure characterized by dispersing by applying a shearing action .