JP2510286Y2 - 2-fluid nozzle device - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention consists of water and air, etc. 2
The present invention relates to a two-fluid nozzle device that mixes and jets fluids, and is preferably used as, for example, a humidifier that jets dry fog into a room, a device that jets a cooling liquid to a material to be processed in an iron mill, a paper mill, or the like. .

[0002]

2. Description of the Related Art Generally, a nozzle 1 is provided with a water supply passage 2 and an air supply passage 3 as shown in FIG. When the fluid nozzles are provided in parallel, as shown in FIG. 9, the water supply pipe 5 and the air supply pipe 6 are separately installed, and branch pipes 5a, 6a are provided from these pipes 5, 6 to provide the nozzles. Connected to 1.

When two separate pipes for supplying two fluids are provided as described above, the piping becomes complicated, a great deal of labor is required for assembly, a space is taken up, and there is no space for piping depending on the installation location. is there.

In order to solve the above-mentioned problems in piping,
In Japanese Unexamined Patent Publication No. 63-248464, a long liquid header 8 is attached to the rear side of a long air header 7 having a rectangular tubular shape, as shown in FIG. A two-fluid nozzle header in which nozzle introducing members 9 extending to the side are attached at equal intervals has been proposed.

[0005]

In the above-mentioned two-fluid nozzle header, the second header (water header) is attached to the rear side of the first header (air header), and the nozzle is installed on the front side of the first header. Therefore, there is a drawback that it cannot be used when it is necessary to install nozzles on the rear side or the upper and lower sides to change the jetting direction according to the shape of the material to be treated or when it is desired to widen the jetting range. Further, since the nozzle to be attached needs to extend through the first header to the second header, there is a drawback that the shape of the nozzle becomes large and the nozzle design is restricted. In addition, the water supply header is attached to the rear side of the air supply header and is exposed, so there is a drawback that the water inside is easily frozen when installed in cold regions or in cold environments. Have

The present invention is intended to provide a two-fluid nozzle device which eliminates all the above-mentioned drawbacks of the conventional device, and the nozzle can be attached to the two-fluid supply pipe in any direction without restriction of the mounting direction. In addition, it is not necessary to enlarge the shape of the nozzle. Moreover, it reduces the possibility that the supply water will freeze.

[0007]

That is, according to the present invention, a supply pipe for one fluid to be supplied to a two-fluid nozzle is arranged inside a supply pipe for the other fluid, and these external fluid supply pipe and internal Nozzle mounting holes are bored in both of the fluid supply pipes so as to be spaced apart in the axial direction so as to face each other, and one nozzle is pierced through these opposing nozzle mounting holes to be fixed by insertion.
Provided is a two-fluid nozzle device in which each fluid inlet provided in the nozzle is opened so as to communicate with the inside of an external fluid supply pipe and the inside of an internal fluid supply pipe.

In the present invention, one end of the nozzle is fixed to the internal fluid supply pipe in advance, and the internal fluid supply pipe having the nozzle attached is moved while being inserted into the external fluid supply pipe, The nozzle is configured to project at one time from the nozzle mounting hole formed in the external fluid supply pipe, so that the mounting is extremely easy.

It should be noted that a plurality of internal fluid supply pipes are provided, and nozzles are fixed in advance to these fluid supply pipes, respectively.
By forming a nozzle mounting hole on the outer surface of the external fluid supply pipe at a position corresponding to the mounting position of the nozzle, the nozzle can be installed in multiple directions from the external fluid supply pipe.

It is particularly preferable that the inner fluid supply pipe is a water supply pipe and the outer fluid supply pipe is an air supply pipe.

[0011]

As described above, when the other fluid supply pipe is inserted and installed inside the one fluid supply pipe, the piping becomes compact, the space required for the piping can be reduced, and the piping becomes extremely easy. . Further, the nozzle can be attached to the other surface of one pipe. Further, when the inner supply pipe is the water supply pipe and the outer supply pipe is the air supply pipe, the freezing of the water can be reduced because the water is surrounded by the air.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the drawings. 1 and 2, 10 is a long air supply pipe made of a square pipe, 11 is a long water supply pipe made of a small-diameter round pipe penetrating the inside of the air supply pipe 10, and 12 is a pipe. It is a two-fluid nozzle mounted on the front surface of the air supply pipe 10 with a required space.

An air introduction pipe 14 is connected to the upstream end of the air supply pipe 10 of the external fluid supply pipe, an air discharge pipe 15 is connected to the downstream end thereof, and the tip of the air discharge pipe 15 is connected to the tip of the air discharge pipe 15 if necessary. A pressure adjusting valve (not shown) is attached or a cap 16 is attached so that air having a set pressure flows through the air supply pipe 10. Similarly, in the water supply pipe 11 serving as the internal fluid supply pipe, a water introduction pipe and a water discharge pipe (not shown) are connected to the upstream end and the downstream end of the water supply pipe 11. I try to distribute it.

The water supply pipe 11 is installed on the side walls at the upstream end and the downstream end of the air supply pipe 10 so as to penetrate through the inside of the air supply pipe 11, and the water supply pipe 11 is located on the same axial line on the front peripheral surface thereof. The nozzle mounting holes 17 are bored at a required interval. Similarly, a nozzle mounting hole 18 is formed on the front surface of the air supply pipe 10 at a position corresponding to the nozzle mounting hole 17.

The two-fluid nozzle 12, as shown in FIG.
Welding adapter 20 for fixing and connecting to water supply pipe 11 and air supply pipe 10, nozzle adapter 21 screwed onto welding adapter 20, and nozzle adapter 21
The cap 22 is screwed onto the core 22, the core 23 is attached to the inside of the cap 22, and the nozzle tip 24.

As shown in the figure, the welding adapter 20 has a welded portion 20a at the rear end which is inserted into the nozzle mounting hole 17 of the water supply pipe 11, and a conical portion 20 which is continuous with the welded portion 20a.
b, an air supply pipe contact portion 20c provided at the tip of the conical portion 20b, a mounting hole penetrating portion 20d having a small diameter by being bent in a stepwise manner from the contact portion 20c, and provided at the tip of the penetrating portion 20d. It is a structure in which the nozzle adapter threaded portion 20e is integrally formed.

The welding adapter 20 is welded at its outer peripheral end to the water supply pipe 11 in a state where the welded portion 20a at the rear end is inserted into the nozzle mounting hole 17 of the water supply pipe 11 and fixed in advance. In this state, it is inserted into the air supply pipe 10, and the nozzle adapter screwing portion 20e and the mounting hole penetrating portion 20d on the front end side are provided at the front end portion of the conical portion 20b by penetrating the nozzle mounting hole 18 of the air supply pipe 10. Air supply pipe contact part 2
0c is brought into contact with the outer peripheral surface of the nozzle mounting hole 18 so as to be attached to the air supply pipe 10 and the water supply pipe 11.

Therefore, by inserting a plurality of welding adapters 20 in the water supply pipe 11 into the air supply pipe 10 and then moving the water supply pipe 11 to the nozzle mounting hole 18 side, Nozzle mounting hole 1 of air supply pipe 10
It is possible to project the welding adapter 20 from 8 at a time. With the welding adapter 20 protruding from the nozzle mounting hole 18, the welding adapter 20 and the air supply pipe 10 are welded and fixed to each other.

At the tip end surface of the nozzle adapter threaded portion 20e of the welding adapter 20, the air supply portion 2 is provided at the center.
0f is formed, and a water supply portion 20g is formed on the outer peripheral portion thereof. The air supply part 20f connects the air introduction port 20h opened on the outer peripheral surface of the conical part 20b via the communication passage 20i, and the water supply part 20g is connected to the water introduction port 20j opened at the tip of the welding part 20a. It is connected via the communication passage 20k.

Therefore, by connecting the welding adapter 20 to the air supply pipe 10 and the water supply pipe 11 as described above, the air introduction port 20h communicates with the inside of the air supply pipe 10 and the air supply portion 20f. Supply air to the water inlet 2
0j communicates with the inside of the water supply pipe 11 and supplies water to the water supply unit 20g.

The welding adapter 20 is attached to the air supply pipe 1
After protruding from the nozzle mounting hole 18 of No. 0, the air supply passage 21a and the water supply passage 2 are attached to the nozzle adapter threaded portion 20e.
The assembly of the two-fluid nozzle 12 is completed by screwing the nozzle adapter 21 provided with 1b and incorporating the core 23 and the nozzle tip 24 into the nozzle adapter 21.

In the two-fluid nozzle 12, the air and water supplied from the air supply passage 21a and the water supply passage 21b of the nozzle adapter 21 are mixed in the mixing chamber 30 provided between the core 23 and the core 23. It flows into the large diameter chamber 24a of the nozzle tip 24 through the small diameter supply passage 23a provided in the shaft core portion, and is sprayed from the discharge port 24c through the small diameter chamber 24b.

The structure of the two-fluid nozzle 12 is not limited to the above-described embodiment, and any structure having a structure for ejecting water and air or two fluids can be appropriately adopted. In addition, in a two-fluid nozzle of the type that injects water into the central portion and injects air into the outer periphery thereof, the water introduction port provided in the welding adapter 20 is inside the water supply pipe, and the air introduction port is inside the air supply pipe. The structure may be opened to

Since the water supply pipe 11 is provided inside the air supply pipe 10 as described above, the space required for the pipe is only the installation space for the air supply pipe 10. In addition, in a two-fluid nozzle that injects a mixed liquid of air and water, it is necessary to increase the cross-sectional area of the supply pipe in order to increase the air supply amount, but the water supply amount is smaller than the air supply amount. Therefore, the cross-sectional area of the water supply pipe is reduced, and therefore, there is no inconvenience in installing the water supply pipe inside the air supply pipe.

Since the water supply pipe is installed inside the air supply pipe, the adapter 20 connected to both supply pipes is provided.
The length of can be shortened. Moreover, since the water supply pipe 11 is arranged inside the air supply pipe 10 and the water is surrounded by the air, the water is kept warm by the air and it is possible to prevent the water from freezing in the cold atmosphere. .

Further, since the water supply pipe is installed inside the air supply pipe, the nozzle can be attached to any of the upper, lower, left and right surfaces of the air supply pipe. That is, as shown in FIG. 4, four water supply pipes 11 are installed inside the air supply pipe 10 in the vicinity of the upper, lower, left, and right inner surfaces, nozzles 12 are attached to each water supply pipe 11, and By ejecting the nozzles from the nozzle mounting holes 18 formed on the upper, lower, left, and right surfaces, spraying can be performed on the upper, lower, left, and right sides.

As shown in FIG. 5, the nozzles 12 are arranged vertically and horizontally.
Is preferably used for cooling the inner surface of the box-shaped workpiece 40. Further, as shown in FIG. 6, when cooling the H-shaped steel 41, the nozzles 12 are attached to the left and right sides and the lower surface.

Further, as shown in FIG. 7, when the air supply pipe 10 ′ of the outer pipe is a large-diameter round pipe and a small-diameter water supply pipe 11 is installed along the inner peripheral surface thereof, the nozzle 12 is formed in an arc shape.
Can be attached, for example, a curved workpiece 4
It is preferably used for cooling to 2.

[0029]

As is apparent from the above description, in the two-fluid nozzle device according to the present invention, since the supply pipe for one fluid is connected to the supply pipe for the other fluid, the piping is extremely simple. In addition, there is an advantage that it does not take up space for piping. Also, by fixing the adapter in advance to the supply pipe for internal piping, you can move the internal piping with respect to the external piping and insert the adapter into the mounting hole of the external piping. It is possible to attach multiple adapters, which makes assembly extremely easy.

Further, since the nozzle device in which the internal fluid supply pipe is installed inside the external fluid supply pipe as described above can be reduced in size and weight, it is easy to handle and has an advantage in terms of packing and transportation. . Moreover, since the number of parts can be reduced, the cost can be reduced.

Furthermore, by installing the internal pipe inside the external pipe, the nozzle can be attached to any side surface of the external pipe, and there is no restriction on the attaching direction of the nozzle, and it can be used for various purposes. I can. Furthermore, in order to connect the nozzle to the external pipe and the internal pipe, the length of the nozzle adapter can be shortened. Therefore, the length of the fluid passage bored in the adapter is shortened, and clogging in the fluid passage can be reduced.
Further, when the outer pipe is the air supply pipe and the inner pipe is the water supply pipe, there are various advantages such as an effect of preventing water from freezing.

[Brief description of drawings]

FIG. 1 is a plan view of a two-fluid nozzle device according to the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is an enlarged sectional view of a nozzle mounting portion.

FIG. 4 is a schematic view showing a modified example of the present invention.

5 is a schematic diagram showing an example of use of the apparatus of FIG.

FIG. 6 is a schematic view showing a modified example of the present invention.

[FIG. 7] Same as above.

FIG. 8 is a sectional view of a conventional two-fluid nozzle.

FIG. 9 is a schematic view showing a pipe of a conventional two-fluid nozzle.

FIG. 10 Same as above

[Explanation of symbols]

 10 Air Supply Pipe 11 Water Supply Pipe 12 2 Fluid Nozzle 17, 18 Nozzle Mounting Hole 20 Welding Adapter 21 Nozzle Adapter 22 Core 23 Nozzle Tip

Claims (4)

(57) [Scope of utility model registration request] 1. A two-fluid nozzle is arranged such that one fluid supply pipe for supplying one fluid is inserted into the other fluid supply pipe, and the two fluid nozzles are axially spaced from each other. To make nozzle mounting holes facing each other, insert one nozzle through the nozzle mounting holes facing each other, insert and fix the nozzles, and supply each fluid inlet provided in the nozzle with an external fluid. A two-fluid nozzle device which is open so as to communicate with the inside of the pipe and the internal fluid supply pipe. 2. One end of the nozzle is preliminarily fixed to the internal fluid supply pipe, and the internal fluid supply pipe having the nozzle attached is moved while being inserted into the external fluid supply pipe to move the nozzle to the external fluid. 2. A structure for projecting from a nozzle mounting hole formed in a supply pipe.
The described device. 3. A plurality of the internal fluid supply pipes are provided, and nozzles are preliminarily fixed to the fluid supply pipes, respectively, while nozzle mounting holes are formed on the outer surface of the external fluid supply pipe at positions corresponding to the mounting positions of the nozzles. The apparatus according to claim 1 or 2, wherein the apparatus is provided so that the nozzle can be installed in multiple directions from the external fluid supply pipe. 4. The apparatus according to claim 1, wherein the inner fluid supply pipe is a water supply pipe and the outer fluid supply pipe is an air supply pipe.