JPH0153584B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat spray type spray nozzle that has a wide range of uses such as cooling, cleaning, and spraying chemical solutions for rolled steel plates and roller conveyors that transport them.

When spraying liquid using this type of spray nozzle, there are cases where you want to spray the liquid in a flat state at multiple locations, such as in the cooling device of a roller conveyor. If a nozzle is provided in the pipe, the piping system becomes complicated and the piping work requires a lot of effort, which tends to increase equipment costs.

In view of the above-mentioned circumstances, the first object of the present invention is to enable liquid spraying to a plurality of locations to be advantageous in terms of equipment, and the second object is to provide a simple and easy method for spraying liquid to a plurality of locations. The object of this invention is to increase and stabilize the spray width of the liquid sprayed in a flat state from the nozzle body through inexpensive modification.

The characteristic configuration of the spray nozzle of the first invention is as follows:
A plurality of spray ports are formed at the bottom of a bottomed cylindrical nozzle body in a state that they are arranged along a straight line or a substantially straight line when viewed from the front, and the bottom portion is between the peripheral edge of these spray ports and the inner circumferential surface of the nozzle body. Among the parts, the area of the bottom portions facing each other in the linear direction is smaller than or zero than the area of the bottom portions facing each other in the direction perpendicular to the linear direction, and the spray nozzle is The point is that a space is formed in which the spray liquid spreads from the inner end to the downstream side in the streamline direction.

In other words, by forming a spray liquid spreading space on the downstream side in the streamline direction from each inner end of the plurality of spray ports formed at the bottom of the bottomed cylindrical nozzle body, the liquid sprayed from each of these spray ports can be Smooth diffusion and flow can be achieved, and as schematically shown in FIG. The area of the portion b that faces each other in the direction orthogonal to the area of the portion a that faces each other in the linear direction
Due to the presence of this large-area portion, a part of the liquid flowing along the inner circumferential surface 1a of the nozzle body 1 is directed to the above-mentioned straight line with respect to the liquid that is about to flow into the spray nozzle 2. Coupled with the fact that it is possible to apply the diffusion flow force in the linear direction to the liquid sprayed from each spray port 2 by colliding in a direction perpendicular to the direction, the liquid can be sprayed at multiple locations. Can be sprayed flat.

Therefore, like the cooling device of a roller conveyor,
When configuring a device that sprays liquid in a flat state at many locations, it is possible to reduce not only the number of nozzles used but also the number of piping as much as possible, thereby reducing equipment costs. I was able to do it.

The characteristic configuration of the spray nozzle of the second invention is as follows:
A plurality of spray ports are formed at the bottom of a bottomed cylindrical nozzle body in a state that they are arranged along a straight line or a substantially straight line when viewed from the front, and the bottom portion is between the peripheral edge of these spray ports and the inner circumferential surface of the nozzle body. Among the portions, the area of the bottom portions facing each other in the linear direction is smaller than or zero than the area of the bottom portions facing each other in the direction orthogonal to the linear direction, and the spray nozzle A spray liquid spreading space is formed from the inner end of the spray port on the downstream side in the streamline direction, and a protrusion is provided protruding from the bottom inner surface between the adjacent spray ports toward the upper side in the streamline direction.

In other words, by providing a protrusion on the inner surface of the bottom between the adjacent spray ports, for example, as in the case without the protrusion, the inner end of the spray port may be The above-mentioned branch flow crossing the linear direction does not occur or is reduced, and the liquid can collide with each other in a rectified state at the inner end side of each spray port.

Therefore, by simply and inexpensively modifying the bottomed cylindrical nozzle body by providing the internal protrusion as described above, it is possible to increase and stabilize the spray width of the liquid sprayed in a flat state from each of the spray ports. We were able to achieve this.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, the spray nozzle of the first invention, which is used when spraying water to a roller conveyor A for conveying rolled steel plates to cool it, is constructed as shown in FIGS. As shown in the figure, two circular spray ports 2, 2 are formed at symmetrical positions on a straight line passing through the center at the bottom of a bottomed cylindrical nozzle body 1 with a circular internal cross-sectional shape. 2, 2 and the nozzle body 1 facing each other in the linear direction.
The area of the bottom portions a, a between the inner circumferential surface 1a portion of the area is zero, or the area of the bottom portions b, b between the inner circumferential surface 1a portion facing each other in a direction perpendicular to the linear direction. It is configured smaller than.

Further, the spray ports 2, 2 are arranged in a tufted shape such that the diameter becomes larger toward the downstream side in the streamline direction, and in an inclined state in which their axes P, P are spaced apart in the linear direction toward the downstream side in the streamline direction. forming and having the spray nozzle 2;
A spray liquid spreading space 3, 3 is formed from the inner end of 2 to the downstream side in the streamline direction.

Due to the presence of the spray liquid spreading spaces 3, 3, the liquid sprayed from each spray port 2, 2 toward the spraying location can be smoothly diffused, and moreover, the large-area bottom portion of the nozzle body 1 can be Due to the presence of b, b, a part of the liquid flowing along the inner circumferential surface of the nozzle body 1 collides with each other in a direction perpendicular to the linear direction, and the spray ports 2, 2
Coupled with the fact that the above-mentioned diffusion flow force in the linear direction can be applied to the liquid sprayed from the sprayer, it is possible to spray the liquid at two locations in a flat state.

5 and 6 show the spray nozzle of the second invention, which is located on the bottom inner surface between the adjacent spray ports 2 and 2, and on the upper side in the streamline direction from a location corresponding to the center of the nozzle body 1. A round bar-shaped protrusion 4 is provided to protrude toward. This protrusion 4 has a tapered shape such that the diameter becomes smaller toward the tip.

Due to the presence of the protrusion 4, for example, as in the case without the protrusion 4, the adjacent spray ports 2, 2
Due to collision of the liquid on the inner surface of the bottom between the two, branching in the straight direction across the inner end of the spray nozzle does not occur or is reduced, and the liquid is distributed separately at the inner end of each spray nozzle 2. It is possible to collide in a rectified state. Therefore, it is possible to increase the spray width and stabilize the liquid sprayed in a flat state from each of the spray ports 2, 2.

In the above-described embodiment, the protrusion 4 is formed into a round rod shape, but it may be formed into a flat plate shape as shown in FIG. 7 or a concave lens shape as shown in FIG. 8.

Further, in the above-described embodiment, the spray ports 2, 2 are formed in a perfect circular shape, but they may be formed in an elliptical shape as shown in FIG. 9 or a rectangular shape as shown in FIG. 10. .

By changing the shape and size of the projection 4 and the shape and size of the spray ports 2, 2 in this way,
The spray width, spray direction, and flow rate distribution of the liquid can be changed.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing the usage state of the spray nozzle, FIG. 2 is a cross-sectional plan view of the nozzle of the first invention,
Figure 3 is a - line sectional view of Figure 2, Figure 4 is a cross-sectional view of Figure 2.
FIGS. 5 and 6 are cross-sectional views showing the nozzle of the second invention and cross-sectional views thereof taken along the line, and FIGS. 7 to 10 show different embodiments, and FIGS. Figure 8 is a sectional view of the nozzle body, Figure 9 is a sectional view of the nozzle body.
10 are front views of the nozzle body, and FIG. 11 is a sectional view schematically showing the nozzle of the present invention. 1...Bottomed cylindrical nozzle body, 3...Spray port, 4...Protrusion. a, b...bottom part.

Claims (1)

[Scope of Claims] 1. A plurality of spray ports 2, 2 are formed at the bottom of the bottomed cylindrical nozzle body 1 in a state that they are arranged along a straight line or a substantially straight line when viewed from the front, and these spray ports 2, 2
Among the bottom portions between the peripheral edge portion and the inner circumferential surface portion of the nozzle body 1, the area of the bottom portions a that face each other in the linear direction is the area of the bottom portions that face each other in the direction perpendicular to the linear direction. The area of the portion b is smaller than or zero, and the spray ports 2, 2
Spray liquid spreads space 3 from the inner end to the downstream side in the streamline direction.
A spray nozzle characterized in that it is formed with. 2 A plurality of spray ports 2, 2 are formed at the bottom of the bottomed cylindrical nozzle body 1 in a state that they are arranged along a straight line or a substantially straight line when viewed from the front, and these spray ports 2, 2
Among the bottom portions between the peripheral edge portion and the inner circumferential surface portion of the nozzle body 1, the area of the bottom portions a that face each other in the linear direction is equal to the area of the bottom portions that face each other in the direction perpendicular to the linear direction. The area of the portion b is smaller than or zero, and the spray ports 2, 2
Spray liquid spreads space 3 from the inner end to the downstream side in the streamline direction.
A spray nozzle characterized in that a protrusion 4 is formed to protrude from the bottom inner surface between the adjacent spray ports 2, 2 toward the upper side in the streamline direction. 3. The nozzle body 1 has a circular internal cross-sectional shape;
The spray nozzle according to claim 2, wherein the projection 4 is provided at the center thereof. 4. The spray nozzle according to claim 2 or 3, wherein the spray ports 2, 2 are configured in an inclined state such that the spray ports 2, 2 are spaced apart from each other in the linear direction toward the downstream side in the streamline direction.