JP3364093B2 - Ring injection nozzle device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring-shaped jet nozzle device capable of jetting a fluid such as air in a ring shape, and more specifically to an outer peripheral surface of a work such as an electric wire, wire, pipe, tube, thread or rod. This is a ring-shaped jet nozzle device suitable for draining and drying.

[0002]

2. Description of the Related Art Conventionally, as an injection nozzle device for draining and drying the outer peripheral surface of a work, a plurality of small-diameter nozzle holes are formed in a circular shape (ring) at appropriate positions on the inner peripheral surface of a cylindrical body. It is known that they are formed side by side. According to this conventional injection nozzle device, the plurality of small-diameter nozzle holes are arranged so as to surround the work passing through the cylindrical body in a ring shape from the outside.

Therefore, by injecting air from a plurality of small-diameter nozzle holes, the air is blown to the entire circumference of the outer peripheral surface of the work passing through the cylindrical body, and the water droplets attached to the outer peripheral surface of the work are blown off, whereby the work. The outer peripheral surface will be drained and dried.

[0004]

However, in the conventional injection nozzle device, since the small-diameter nozzle hole and the small-diameter nozzle hole which are adjacent to each other are arranged at a constant interval, when the work passes through the cylinder at a high speed. The water droplets remain on the area of the outer peripheral surface of the work corresponding to the portion where the small diameter nozzle is not arranged, and this causes a striped pattern parallel to the axis on the outer peripheral surface as the work moves. Therefore, in the conventional jet nozzle device, it is impossible to drain and dry the work while moving the work at a high speed, so that there is a problem that the efficiency of the draining and drying process is inevitably deteriorated.

The present invention is intended to solve the above-mentioned problems by providing a ring-shaped jet nozzle device capable of improving the efficiency of draining / drying the outer peripheral surface of a work.

[0006]

Therefore, according to claim 1 of the present invention, a tip end portion of the outer cylinder is provided with a tapered portion, the inner cylinder is arranged in the outer cylinder, and the tip end portion of the inner cylinder is arranged. A ring-shaped nozzle is formed by a ring-shaped gap formed by the tip end of the tapered portion, the outer cylinder is provided with a fluid blowing port, and the fluid blowing port is eccentric to communicate with the fluid flow path. A ring-shaped injection nozzle device characterized in that a fluid supply source is connected to a fluid flow path, and the surface of a work passing through the inner cylinder is drained and dried with a fluid injected from the ring-shaped nozzle.

In the ring-shaped injection nozzle device according to the present invention described above, the ring-shaped nozzle is formed by the tip of the tapered portion of the outer cylinder and the tip of the inner cylinder. Therefore, the fluid guided by the tapered portion is uniformly ejected from the entire circumference of the ring-shaped nozzle toward the center of the inner cylinder, and is uniformly sprayed on the entire circumference of the work outer peripheral surface passing through the inner cylinder. .

Further, since the fluid flow path is communicated by eccentric to the fluid injection port of the outer cylinder, the fluid supplied from the fluid flow path to the fluid injection port is unevenly supplied from the fluid injection port. Therefore, the fluid flows as a rotating vortex fluid into the fluid supply space between the outer cylinder and the inner cylinder, and the fluid smoothly spreads around the entire circumference in the fluid supply space toward the nozzle outlet. Thereby, the fluid can be uniformly ejected from the ring-shaped nozzle.

As a result, even if the work is drained and dried while being moved at a high speed, water drops do not remain on the outer peripheral surface of the work to form a striped pattern parallel to the axis line. It is possible to improve efficiency.

According to a second aspect of the present invention, there is provided a ring-shaped injection nozzle device characterized in that the outer circumference of the tip of the inner cylinder is a tapered surface.

By forming the tapered outer peripheral surface of the tip of the inner cylinder, the fluid can be more efficiently jetted from the ring-shaped nozzle toward the center of the inner cylinder. It is possible to further improve efficiency.

According to a third aspect of the present invention, there is provided a ring-shaped jet nozzle device characterized by comprising an adjusting means for adjusting the opening width of the ring-shaped nozzle by moving the inner cylinder in the axial direction.

By adjusting the opening width of the ring-shaped nozzle, it becomes possible to adjust the injection amount and flow velocity of the fluid from the ring-shaped nozzle. Therefore, since the fluid can be sprayed onto the outer peripheral surface of the work piece in a suitable state, the efficiency of the draining / drying process can be further enhanced.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a ring-shaped injection nozzle device according to the present invention (first embodiment).

Here, the ring-shaped injection nozzle device 1 has an outer cylinder 3 having a tapered portion 2 at its tip, and the outer cylinder 3
It is composed of an inner cylinder 5 arranged inside, a fluid introduction path 6 connected to the outer circumference of the outer cylinder 3, and a fluid supply source communicating with the fluid introduction path 6 such as a high-pressure blower, a compressor, and a high-pressure gas cylinder (not shown). .

FIG. 2 is a plan view of a ring-shaped jet nozzle device (first embodiment) according to the present invention. The inner cylinder 5 is formed longer than the outer cylinder 3 on the side opposite to the nozzle forming position (rear end), and the connecting position between the rear end of the outer cylinder 3 and the outer peripheral surface of the inner cylinder 5 is sealed with an annular plate 8. Has been done. As a result, an air supply space is formed by the outer cylinder 3 and the inner cylinder 5.

Further, the outer cylinder 3 is provided with a fluid blow-in port (air blow-in port) 3a on the outer periphery thereof, and the fluid blow-in port 3a is formed in a circular shape with a diameter D2 smaller than the diameter D1 of the fluid introducing passage 6, and the fluid introducing passage. 6 is eccentrically arranged by a dimension D3. As a specific example of this eccentric arrangement, it can be easily formed, for example, by attaching the shield plate 7.

As a result, the flow of the air sent from the fluid introduction path 6 is blocked at the portion of the shield plate 7, the flow is directed in the direction of arrow A at the position of the fluid blowing port 3a, and the air is supplied into the air supply space 10. It flows as a rotating vortex fluid. Therefore, the air supplied to the air supply space 10 becomes a smooth flow without exhibiting a turbulent flow phenomenon in the circumferential direction, and spreads while rotating all around the air supply space 10.

FIG. 3 is a sectional view taken along line III-III in FIG. The inner cylinder 5 has a tapered outer peripheral surface with a taper surface 5a, and forms a ring-shaped nozzle 12 (see also FIG. 1) adjacent to the front end of the tapered portion 2 of the outer cylinder 3. Therefore, the air guided by the inner peripheral surface of the tapered portion 2 of the outer cylinder 3 and the tapered surface 5a of the inner cylinder 5 is directed from the entire circumference of the ring-shaped nozzle 12 toward the center of the inner cylinder 5 (see arrow B). It is sprayed uniformly.

FIG. 4 is a sectional view taken along line IV-IV in FIG. As described above, since the air blowing port 3a is arranged so as to be eccentric from the fluid introducing passage 6 by the dimension D3, the air blown out from the fluid introducing passage 6 has the shielding plate 7 at the fluid blowing port 3a. As a result, a rotating vortex fluid oriented in the direction of arrow A flows into the air supply space 10. Therefore, the air supplied to the air supply space 10 smoothly spreads around the entire circumference in the air supply space 10.

Further, four screws 14 are provided on the outer circumference of the outer cylinder 3.
Are spaced 90 degrees apart and these screws 14 ...
The outer periphery of the tip of the inner cylinder 5 (see also FIG. 3) is supported by the tip of the. Therefore, the central position of the inner cylinder 5 can be finely adjusted by adjusting the screwing amount of the screws 14 ... And the vibration that may occur depending on the condition of the flow rate of the fluid passing through the ring-shaped nozzle 12 portion. It has the effect of reducing phenomena such as resonance and resonance. The number of screws 14 is not limited to four, and may be three at intervals of 120 degrees, for example, or any other number.

Next, the operation of the ring-shaped jet nozzle device of the present invention will be described. FIG. 5 is an operation explanatory view of the ring-shaped injection nozzle device (first embodiment) according to the present invention.

Air is supplied from the fluid supply source to the fluid introduction path 6, and the air blown out from the fluid introduction path 6 is caused to flow into the air supply space 10 from the fluid injection port 3a shown in FIG.
In this case, since the fluid blow-in port 3a is arranged eccentrically with the fluid introducing passage 6 by the dimension D3, the air sent from the fluid introducing passage 6 is directed in the direction of arrow A by the effect of the fluid blowing passage 3a. , Becomes a rotating vortex fluid and flows into the air supply space 10.

Therefore, the air supplied to the air supply space 10 smoothly spreads around the entire circumference of the air supply space 10 while rotating. Then, the air that has spread all around the air supply space 10 is transferred to the inner peripheral surface of the taper portion 2 of the outer cylinder 3,
Since the air passage is gradually narrowed between the tapered surface 5a of the inner cylinder 5 (see FIG. 3), the flow is accelerated and rectified to extend from the entire circumference of the ring-shaped nozzle 12 toward the center of the inner cylinder 5 ( Arrow B
(Refer to) Vigorous and uniform injection.

In this state, when the work 16 is advanced inside the inner cylinder 5 in the direction of arrow C, air can be blown uniformly and vigorously on the entire outer peripheral surface of the work 16.
Therefore, even if the work 16 is drained and dried while being moved at high speed, water drops do not remain on the outer peripheral surface of the work 16 to form a striped pattern parallel to the axis line. The processing efficiency can be improved.

Next, the second embodiment will be described. Figure 6
FIG. 4 is a partial cross-sectional view of a ring-shaped injection nozzle device (second embodiment) according to the present invention. Note that, in FIG. 6, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The ring-shaped injection nozzle device 20 has an adjusting means 21 for adjusting the interval between the ring-shaped nozzles 12 (see FIG. 3).
Is equipped with. The adjusting means 21 includes a female screw 23 provided on the annular plate 22 and a male screw 24 attached to the outer circumference of the inner cylinder 5 and screwed to the female screw 23. The annular plate 22 is attached to the rear end of the outer cylinder 3.

Accordingly, by rotating the inner cylinder 5 in the clockwise direction or the counterclockwise direction, the inner cylinder 5 is moved to the arrow D-E.
It is possible to adjust the opening width of the ring-shaped nozzle 12 (see FIG. 3) by moving in the direction (axial direction). By adjusting the opening width of the ring-shaped nozzle 12 in this way, the injection amount and flow velocity of air from the ring-shaped nozzle 12 can be adjusted.

In the first embodiment, the case where the work 16 is a rod has been described, but the present invention is not limited to this, and other members such as an electric wire or a wire may be used.

[0030]

Therefore, according to the first aspect of the present invention, the ring-shaped nozzle is formed by the tip of the taper portion of the outer cylinder and the tip of the inner cylinder. Therefore, the fluid guided by the tapered portion is uniformly and vigorously ejected from the entire circumference of the ring-shaped nozzle toward the center of the inner cylinder, and is uniformly sprayed on the entire outer peripheral surface of the work passing through the inner cylinder without any gap. To be

Further, since the fluid introduction path is made to communicate by being eccentric to the fluid injection opening of the outer cylinder, the fluid supplied from the fluid introduction path to the fluid injection opening becomes a rotating vortex fluid and is efficiently discharged from the fluid injection opening. Is supplied to. Therefore, the fluid regularly flows into the fluid supply space between the outer cylinder and the inner cylinder from one side, and the fluid smoothly rotates and spreads around the entire circumference in the fluid supply space. As a result, the fluid can be uniformly and vigorously ejected from the ring-shaped nozzle.

As a result, even if the work is drained and dried while being moved at a high speed, water drops do not remain on the work outer peripheral surface and a striped pattern parallel to the axis line is not formed. The efficiency of draining / drying treatment can be improved.

According to the second aspect of the present invention, the outer circumference of the tip end portion of the inner cylinder is tapered so that the fluid can be ejected from the ring nozzle toward the center of the inner cylinder more efficiently. Thereby, the efficiency of the draining / drying process can be further enhanced.

According to the third aspect, the injection amount and the flow velocity of the fluid from the ring-shaped nozzle can be adjusted by adjusting the distance between the ring-shaped nozzles. Therefore, it is possible to perfectly handle the conditions such as the object to be processed and the line speed,
Since the fluid can be sprayed onto the outer peripheral surface of the work piece in a suitable state, the efficiency of draining / drying treatment can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a ring-shaped injection nozzle device according to the present invention (first embodiment).

FIG. 2 is a plan view of a ring-shaped injection nozzle device according to the present invention (first embodiment).

FIG. 3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an operation explanatory view of the ring-shaped injection nozzle device (first embodiment) according to the present invention.

FIG. 6 is a partial cross-sectional view of a ring-shaped injection nozzle device according to the present invention (second embodiment).

[Explanation of symbols]

1, 20 ... Ring injection nozzle device 2 ... tapered part 3 ... Outer cylinder 3a ... Fluid injection port 5 ... Inner cylinder 5a ... Tapered surface 6 ... Fluid introduction path 7 ... Shielding plate 12 ... Ring-shaped nozzle 16 ... work 21 ... Adjusting means 23 ... Female thread 24 ... Male screw

Claims (3)

(57) [Claims] 1. An outer cylinder is provided with a tapered portion at a front end thereof, an inner cylinder is arranged in the outer cylinder, and a ring shape formed by the front end of the inner cylinder and the front end of the tapered portion. A ring-shaped nozzle is formed in the gap, and the outer cylinder is equipped with a fluid injection port.
Eccentric to this fluid inlet to connect the fluid flow path,
A ring-shaped injection nozzle device, characterized in that a fluid supply source is connected to the fluid flow path, and the surface of the work passing through the inner cylinder is drained and dried with the fluid injected from the ring-shaped nozzle. 2. The ring-shaped injection nozzle device according to claim 1, wherein the outer circumference of the tip of the inner cylinder is a tapered taper surface. 3. The inner cylinder is moved in the axial direction to move the inner cylinder.
It is equipped with adjustment means that can adjust the opening width of the ring-shaped nozzle.
And the ring-shaped jet according to claim 1 or 2.
Firing nozzle device.