JP2008307499A - Spray nozzle and spray apparatus equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spray nozzle, which exerts adequate dust removability when used for a spray apparatus for dust removal regardless of a hard or soft subject to which dust adheres and enables careful coating and prevention of dripping of coating materials when used for a spray apparatus for coating. <P>SOLUTION: A spray nozzle 10 includes: an outlet pipe 12 that is installed removably to a spray bottle for spraying the content filling it in the form of gas or aerosol-containing gas; and a rotating nozzle 14 that is installed freely rotatably with respect to the outlet pipe and is provided therewithin with a continuous hole that is in connection with the outlet pipe, wherein at the tip of the rotating nozzle, a spray port 16 for spraying the content is formed in a position offset to the diameter direction from a rotation axis 20 of the rotating nozzle and in the direction so that it intersects with both the rotation axis and the diameter direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a spray device such as a dust removal spray or a coating spray, and a spray nozzle that is detachably mounted on the spray device.

  Dust spraying devices (dust sprays) are widely used to blow dust attached to precision machines such as personal computers, industrial machines such as cutting machines, OA equipment, household appliances, and furniture. Reference 1). In general, dust spray is filled with pressure resistant containers such as metal cans with high-pressure gas appropriately mixed with alternative chlorofluorocarbon, DME (dimethyl ether), carbon dioxide, etc. The dust is blown off by spraying from the nozzle (see Patent Document 2 below).

  On the other hand, a spray device for painting (painting spray) is a liquid or powder paint that spouts together with a high-pressure propellant such as liquefied gas or compressed gas filled in a pressure-resistant container such as a metal can. This is changed to aerosol and sprayed on the object to be painted.

  A tube called a long nozzle is detachably or fixedly attached to the spray container, and is configured so that the high-pressure gas or paint, which is the contents, can be aimed at a desired object and injected. It is common. Further, by making the outlet at the tip of the long nozzle narrow, the content to be injected can be expanded rapidly, the high-pressure gas can be instantly vaporized, and the paint can be made finer into an aerosol.

JP-A-10-52676 JP 2004-237149 A

  However, in the conventional dust removal spray apparatus, the injection force of the high-pressure gas is not always sufficient, and the flexible body receiving the injection force is deformed particularly with respect to dust attached to the flexible body such as cloth. As a result, the power to remove the target dust is reduced, and there is a problem that the dust removal capability cannot be fully exhibited.

  In addition, in spraying equipment for painting, the aerosol cannot be made fine by simply reducing the nozzle outlet diameter, so fine coating cannot be achieved, and the coating thickness increases and dripping occurs. There was a problem that occurred.

  The present invention has been made to solve the above problems, that is, when used in a dust removing spray device, it exhibits a suitable dust removing ability regardless of whether the object to which dust adheres is hard or soft. It is another object of the present invention to provide a spray nozzle that can be applied finely when it is used in a spraying apparatus for coating and can prevent dripping of the paint. Another object of the present invention is to provide a spray device including such a spray nozzle.

  The spray nozzle of the present invention continuously injects contents such as high-pressure gas and paint filled in a container from an outlet that rotates around a rotation axis with a predetermined diameter, thereby preventing dust from adhering to the nozzle. By applying a spraying force so as to surround the dust, the dust can be lifted and removed, and the paint can be refined into a fine aerosol.

That is, the spray nozzle of the present invention is
(1) A lead-out pipe that is detachably attached to a spray container that injects the filled contents as a gas or an aerosol-containing gas, and a through-hole that communicates with the lead-out pipe is provided inside the lead pipe. A spray nozzle having a rotatable nozzle mounted rotatably,
At the tip of the rotary nozzle, an outlet for injecting the contents at a position offset in the radial direction from the rotary axis of the rotary nozzle is directed in a direction that intersects both the rotary axis direction and the radial direction. Spray nozzle characterized by being formed;
(2) The spray nozzle according to (1), wherein the content is a high-pressure gas for dust removal;
(3) The rotating nozzle has a plurality of outlets respectively communicating with the outlet pipe at rotationally symmetric positions with respect to the rotation axis, and the plurality of outlets have the same rotation direction around the rotation axis. The nozzle for spraying according to the above (1) or (2),
(4) The spray nozzle according to any one of (1) to (3), wherein the rotary nozzle includes a fan that generates an axial flow in the rotation axis direction by the rotation of the rotary nozzle;
(5) The spray nozzle according to any one of (1) to (4), wherein the rotating nozzle has a brush protruding from the tip thereof;
Is the gist.

The spray device of the present invention is
(6) (A) A spray container filled with high-pressure gas for dust removal, (B) a lead-out pipe detachably attached to the spray container, and a through-hole communicating with the lead-out pipe are provided inside. And a rotary nozzle that is rotatably attached to the outlet pipe, and a blower that injects the high-pressure gas at a tip of the rotary nozzle at a position offset in a radial direction from a rotation axis of the rotary nozzle. A spray nozzle formed so that an outlet thereof intersects the rotation axis, and (C) a valve body that closes or opens the flow of the high-pressure gas from the spray container to the outlet pipe, A dust removing spray device that injects the high-pressure gas from the outlet while rotating the rotary nozzle by high-pressure gas injection force by operating the valve body;
(7) (A) a spray container filled with a liquid or powder paint and a compressed propellant, (B) a lead-out pipe detachably attached to the spray container, and the lead-out pipe A rotation nozzle that is provided with a communicating hole inside and is rotatably attached to the outlet tube, and is arranged at a position offset radially from the rotation axis of the rotation nozzle at the tip of the rotation nozzle. A spray nozzle in which an air outlet for injecting a gas mixture of the aerosol obtained by refining the paint and the vaporized gas of the propellant is formed in a direction crossing the rotation axis; and (C) the spray A valve body for closing or opening the flow of the mixed gas from the container to the outlet pipe, and by operating the valve body, the rotating nozzle is rotated by the jetting force of the mixed gas and the Spray device for coating that injects if gas;
Is the gist.

  According to the spray nozzle and the spray device of the present invention, the outlet at the tip of the rotary nozzle is at a position offset in the radial direction from the rotary shaft, and in a direction intersecting both the rotary shaft direction and the radial direction, that is, a predetermined By forming the opening so as to have a rotational direction component, the rotary nozzle rotates axially by the reaction force when the contents filled in the spray container are ejected. For this reason, since the contents injected as a gas or an aerosol-containing gas are rotationally diffused in a circular shape (or a substantially circular shape) around the rotation axis, conventional spray nozzles that are intensively injected from the tip of the long nozzle, Compared with the spray device, the following two points exhibit different operational effects.

First, when the spray nozzle of the present invention is used for dust spraying, it captures dust on the extended line of the outlet pipe, which is the rotating shaft, and continuously applies a high-pressure gas spraying force around it. be able to. Further, by turning the spray nozzle, the pressure wave of the high-pressure gas to be injected is amplified, and the spray force can be increased. For this reason, even when dust adheres to a flexible body such as a cloth, or even when dust adheres firmly to the object to be adhered, it is necessary to hit the futon with a futon to lift the dust around the target dust. This can be easily removed by applying a continuous striking force to the surface.
On the other hand, in conventional long nozzles and spray devices, high-pressure gas is fixedly concentrated and sprayed at a single point, so that the blowing force works rather as a pressing force against dust, and this is the subject of adhesion as in the present invention. The effect of lifting and removing from was not obtained.

Secondly, when the spray nozzle of the present invention is used for coating spray, when the paint is dispersed by the diffusion of the propellant to form an aerosol, the spray nozzle is continuously discharged from the outlet of the rotating rotary nozzle. By spraying, it is possible to obtain an aerosol having a finer particle diameter than when a conventional long nozzle or spray device is used.
Therefore, when the paint is sprayed onto the surface to be coated such as a wall surface using the spray for painting of the present invention, it is possible to apply finely, the permeability of the paint to the surface to be painted is good, and liquid dripping occurs. Therefore, suitable application to a vertical surface to be coated is possible.

  Further, as a more specific aspect of the present invention, a plurality of air outlets formed in the rotary nozzle are provided, and each air outlet is provided at a rotationally symmetric position with respect to the rotation axis. The forces are balanced and the rotating nozzle rotates smoothly around the outlet tube without being eccentric. At this time, by directing each air outlet in the same rotational direction, the reaction force of the gas injection received by each air outlet does not cancel out in the rotational direction, and the rotating nozzle is better in the direction opposite to the same direction. Can be rotated.

  Further, as a more specific aspect of the present invention, an axial fan that generates an axial flow in the axial direction of the rotary nozzle may be provided. Thereby, the rotational component of the gas injected from the rotating outlet is suppressed, and the axial component increases. Therefore, the rotational diffusion of the high-pressure gas or the aerosol-containing gas can be suppressed, and conversely, the jetting force against dust and the spraying force against the surface to be coated can be increased.

  Further, as a more specific aspect of the present invention, a brush protruding from the tip of the rotating nozzle may be provided. As a result, in the dust removing spray device in which the contents of the spray container are high pressure gas for dust removal, the effect of direct wiping with the brush can be obtained together with the injection force of the high pressure gas. Can be further increased.

Hereinafter, the spray nozzle according to the present invention and the spray apparatus including the spray nozzle will be described more specifically with reference to the drawings.
FIG. 1 is a partial schematic view of a spray nozzle 10 according to a first embodiment of the present invention and a spray device 30 including the same. The illustration below the pressure can 32 is omitted.

<About spray equipment and contents>
The spray device 30 of the present embodiment is a dust spray, and the spray nozzle 10 is detachably attached to a spray container 38 having a pressure-resistant can 32 filled with high-pressure gas for dust removal and a push button 34. It is made.
The push button 34 is integrally formed with a nozzle mounting port 36 and a valve body (not shown). When the spray device 30 is not used, the high pressure gas and the nozzle mounting port 36 are blocked by the valve body. When the user depresses the push button 34, the valve body is shifted to the inside of the pressure can 32, and the high-pressure gas flow path leading to the nozzle mounting port 36 is opened.

The outlet tube 12 of the spray nozzle 10 of the present invention is detachably attached to the nozzle mounting port 36. Therefore, the spray nozzle 10 of the present invention that exhibits the above-described effect and a normal long nozzle can be appropriately selected according to the dust removal object and the object to be coated.
That is, for example, when the spray nozzle 10 is used for dust spray, when removing dust accumulated in a narrow gap such as a personal computer (PC) keyboard or a ditch in furniture, a normal long nozzle is used. In the case where dust attached to a flexible body such as cloth or a flat plate is removed by using it attached to the mounting opening 36, this can be replaced with the spray nozzle 10 of the present invention.

The high-pressure gas for dust removal filled in the pressure can 32 is a kind of so-called alternative CFC such as HFC-134a and HFC-152a, liquefied gas such as dimethyl ether (DME), carbon dioxide gas, nitrogen gas or air, or compressible gas. Alternatively, a plurality of types can be mixed and used.
These gases are pressurized to a high pressure of about atmospheric pressure or more and about 1.0 MPa or less and are filled in the pressure can 32 in a high-pressure gas or liquid state. To do. Therefore, the high-pressure gas blown out from the outlet 16 at the tip of the rotary nozzle 14 described in detail later is a gas, and does not wet the injection target or dust.

In addition, when using the spray apparatus 30 of this embodiment as a spray for coating, what is necessary is just to fill the pressure-resistant can 32 with the mixture of a coating material and a propellant as a content.
As the paint, coloring paints, rust preventive paints, waterproof paints, glazing paints, anti-peeling paints, undercoat paints and the like can be widely used, regardless of properties such as aqueous, oily, and lacquer systems. The paint is filled in the pressure can 32 in the form of liquid or powder.

As a propellant for spraying the paint vigorously and dispersing it in the aerosol, LP gas can be used in addition to various liquefied gases and compressible gases used for the high-pressure gas for dust removal. The propellant is also pressurized to a high pressure of not less than atmospheric pressure and not more than 1.0 MPa, filled in the pressure can 32, and released to the atmospheric pressure by depressing the push button 34, so that the propellant is injected from the outlet 16 together with the paint. . Further, since the propellant expands abruptly when passing through the outlet 16, the paint is aerosolized to a fine diameter and sprayed onto the object to be coated.
Unless otherwise specified in the following description, the operation principle when the spray device 30 of the present invention is used as a spray for spraying by replacing high-pressure gas for dust removal with a propellant is similarly described.

<About spray nozzle>
The spray nozzle 10 of the present invention includes a lead-out pipe 12 whose base end is attached to the nozzle mounting port 36, and a rotary nozzle 14 that is rotatably attached to the tip thereof. Both the outlet pipe 12 and the rotary nozzle 14 have through holes therein, and the two communicate with each other to form a high-pressure gas flow path from the base end of the outlet pipe 12 to the tip of the rotary nozzle 14.

The outlet tube 12 may be a rigid tube that does not cause significant deformation during injection so that the injection direction of the high-pressure gas can be stably determined in a predetermined direction. The material, length, thickness, etc. are not particularly limited, and a rotary shaft 20 described later can be formed at the tip of a conventional long nozzle made of metal or plastic.
The center line shape of the outlet tube 12 may be a straight line as shown, or may be curved or branched. On the other hand, the cross-sectional shape (transverse cross-sectional shape) with respect to the center line of the outlet pipe 12 is not particularly limited, but by making this circular, the flow of high-pressure gas is stabilized. Further, in the case where the distal end portion of the outlet tube 12 is the rotational axis of the rotary nozzle 14 as in the spray nozzle 10 (see FIG. 4) of the third embodiment to be described later, the cross-sectional shape of the outlet tube 12 By making the shape circular, the rotating nozzle 14 can be smoothly rotated.

  The rotating nozzle 14 has a proximal end attached to the distal end of the outlet tube 12 and a high-pressure gas outlet 16 formed in the distal end. In the spray nozzle 10 of the present embodiment, a curved short tube is used as the rotating nozzle 14. Further, the rotary shaft 20 fixed to the outlet pipe 12 by the shaft fixing portion 22 is inserted into the rotary nozzle 14, and a stopper 24 is provided on the rotary shaft 20 to prevent the rotary nozzle 14 from coming off. On the other hand, it is rotatably attached.

The rotating shaft 20 is on the center line of the outlet tube 12 and is present in the direction in which the tip of the outlet tube 12 extends. However, as long as the rotating nozzle 14 can rotate around the rotating shaft 20 and the injected high-pressure gas does not significantly leak from the gap between the outlet tube 12 and the rotating nozzle 14, the rotating shaft 20 is connected to the outlet tube 12. Even if it attaches to the position eccentric with respect to the center of this, the direction where the front-end | tip of the derivation | leading-out pipe | tube 12 extends and a rotating shaft direction may not correspond.
As a specific rotating shaft 20, in addition to a mode in which a thin wire such as a wire is inserted into the lead-out pipe 12 as in the present embodiment, the rotating shaft 20 protrudes from the rotating nozzle 14 toward the tip side, An embodiment in which the outlet tube 12 is connected by a fixture may be used. Further, as in the present embodiment, the lead-out pipe 12 and the rotating shaft 20 may be formed as separate members, or both may be integrally formed as a single member. As for the latter, for example, the distal end portion of the outlet tube 12 itself can be used as the rotary shaft 20 as in the third embodiment described later.

  The air outlet 16 formed at the tip of the rotary nozzle 14 is formed at a position offset in the radial direction from the rotary shaft 20 in a direction intersecting both the rotary axis direction (AX) and the radial direction (R). Has been. In other words, the injection direction, which is the normal direction of the opening surface of the outlet 16, has a rotational direction component of the rotary nozzle 14 that rotates about the rotation axis 20. Thereby, when high pressure gas is injected from the blower outlet 16, the rotating nozzle 14 rotates around the rotating shaft 20 in a direction opposite to the rotating direction by the reaction force.

  Specifically, in the spray nozzle 10 shown in FIG. 1, since the outlet 16 faces the intermediate direction between the rotation axis direction (AX) and the rotation direction (front side of the paper), the press button 34 is pressed down to increase the pressure. When the gas is injected from the outlet 16, the rotary nozzle 14 rotates counterclockwise as viewed from the rotation axis direction (AX). Accordingly, in the spray nozzle 10, the blowout port 16 moves on the circumference having the offset width as a radius around the rotation axis 20, and this is diffused in the direction of the rotation axis while diffusing the high-pressure gas in the radial direction (R). (AX) can be injected.

  For this reason, according to the spray device 30 of the present embodiment, by pressing the push button 34 and injecting high-pressure gas while capturing the target dust on the extended line in the rotation axis direction (AX), A high-pressure gas striking force can be continuously applied to the surface, and this can be lifted off from the object to be adhered and removed. That is, when a high-pressure gas blowing force is continuously applied on the circumference centered on dust, the force that causes the dust to shift in the radial direction of the circumference is offset and the direction in which the dust is pressed against the adhesion target This force does not act, and conversely, only the force to lift the dust acts as if the object to be adhered is hit with a futon, so that the dust can be easily removed.

  The ratio of the diffusion component in the radial direction (R) and the straight component in the rotation axis direction (AX) in the flow of the injected high-pressure gas is adjusted by the orientation and shape of the opening surface of the outlet 16. Is possible. That is, by directing the air outlet 16 in the direction of the rotation axis (AX), the injection speed of the contents in the direction can be increased, and conversely, the contents are further diffused by directing the air outlet 16 in the rotational direction. be able to.

In addition, in the present invention, a solid rotating body having a through hole formed therein is molded from a resin material, and the rotating shaft 20 is provided coaxially with the outlet tube 12 so that the rotating body is connected to the distal end of the outlet tube 12. It is good also as the rotation nozzle 14 by mounting | wearing freely.
The through hole formed in the rotating body communicates the proximal end side with the distal end of the outlet tube 12, and the distal end side has a rotational direction component at a position offset in the radial direction from the rotary shaft 20 as described above. Let it be a blower outlet 16.

  FIG. 2 is a partial vertical cross-sectional schematic view in which the tip side of the spray nozzle 10 of the present embodiment shown in FIG. 1 is cut along the center line of the outlet tube 12. The proximal end side (left side in the figure) of the outlet pipe 12 is not shown.

The rotating shaft 20 made of a wire such as a wire has a proximal end fixed to the outlet tube 12 by a shaft fixing portion 22, and a distal end protruding through the insertion hole 18 of the rotating nozzle 14 toward the distal injection direction of the spray nozzle 10. ing.
The shaft fixing portion 22 is also made of a wire material such as a wire and is stretched in the radial direction of the outlet tube 12. The shaft fixing part 22 and the rotating shaft 20 may be composed of a single wire. Both the shaft fixing portion 22 and the rotating shaft 20 may be made of a thin wire so as not to block the flow path inside the outlet tube 12 as much as possible. Therefore, from the viewpoint of strength, a metal material is preferably used as described above.
The stopper 24 is formed with a larger diameter than the insertion hole 18 at the tip of the rotating shaft 20 so that the rotating nozzle 14 does not separate from the rotating shaft 20. The stopper 24 may be made by bending the tip of the rotating shaft 20 or may be made of a resin material cured in a spherical shape or the like at the tip of the rotating shaft 20.

The inner diameter of the through hole provided in the rotary nozzle 14 is formed to be slightly larger than the outer diameter of the outlet pipe 12 so that the base end side (left side in the figure) covers the distal end of the outlet pipe 12 and is rotatable relative to each other. It is fitted.
In addition, the rotary nozzle 14 which is curved downward in the figure and has a flow path is formed on the tip side (right side in the figure) so that the injection direction of the high pressure gas from the outlet 16 has a rotation direction component around the rotation axis 20. Folds further toward the front of the page.

The rotating nozzle 14 is preferably lightweight and highly rigid so that the rotation around the rotating shaft 20 is good, and therefore a hard plastic material is preferably used.
The light weight reduces the moment of inertia, and the high rigidity reduces the energy loss because the rotating nozzle 14 itself is not deformed by the reaction force of high-pressure gas injection.

In the spray nozzle 10 of the present embodiment, the outlet tube 12 and the rotary nozzle 14 are not significantly deformed by the high pressure gas injected together.
On the other hand, even when the entire spray nozzle is made of a flexible tube having excellent flexibility, the entire nozzle is swung by the reaction force of high-pressure gas injection, and the high pressure while rotating the outlet on the circumference. Gas can be injected. However, in such a case, it is difficult to aim at the target dust or object to be coated because the entire nozzle is a flexible tube, and at the beginning of the blowout, the flow of high-pressure gas is not stable, and the tube snakes and rampages. This is inferior to the present invention in that it is difficult to turn the air outlet by controlling it to a desired diameter.
Therefore, in the present invention, it is preferable that at least the outlet tube 12 is made of a hard material, and it is more preferable that both the outlet tube 12 and the rotary nozzle 14 are made of a hard material.

<About other embodiments>
FIG. 3 is a partial vertical cross-sectional schematic diagram relating to the tip of the spray nozzle 10 according to the second embodiment of the present invention. In the present embodiment, the rotary nozzle 14 has a linear shape that obliquely intersects with the rotary shaft 20 from the base end side (left side in the drawing) to the tip end side (right side in the drawing), and the inside of the base end portion of the rotary nozzle 14. This is different from the spray nozzle according to the first embodiment (see FIG. 2) in that a gap 26 having a predetermined width exists between the leading end of the outlet pipe 12 and the outside.

  As described above, as long as the outlet 16 is provided by being offset by a predetermined width in the radial direction from the rotary shaft 20, the shape of the rotary nozzle 14 is linear as in the present embodiment, as in the first embodiment. It may be curved.

In addition, when the outlet tube 12 and the rotary nozzle 14 are rotatably attached to each other, even if they are fitted and mounted partially overlapping each other as in the first embodiment, the outlet tube 12 and the rotary nozzle 14 can be attached more than the outlet tube 12 as in this embodiment. The proximal end portion of the rotary nozzle 14 having a large diameter may be loosely fitted to the distal end of the outlet tube 12 with a clearance. In the vicinity of the air outlet 16, a negative pressure is formed by the injected high-pressure gas, and atmospheric suction is generated from the gap 26 inside the rotary nozzle 14, so that the high-pressure gas is prevented from leaking from the air outlet 26.
On the other hand, the free frictional force acting on the rotating rotating nozzle 14 is reduced by loosely fitting the leading end of the outlet tube 12 and the base end of the rotating nozzle 14 as in the present embodiment, and even when a small amount of content is blown out. Smooth rotation of the rotary nozzle 14 can be obtained.

  FIG. 4 is a partial longitudinal cross-sectional schematic diagram regarding the front-end | tip part of the nozzle 10 for spraying of 3rd embodiment of this invention. In the present embodiment, the leading end of the outlet tube 12 and the base end of the rotating nozzle 14 are concavo-convexly fitted to each other so that the outlet tube 12 itself functions as the rotating shaft of the rotating nozzle 14. The second embodiment is different from the second embodiment in that the shaft fixing portion 22 and the stopper 24 (see FIG. 3) are unnecessary.

Specifically, two ring-shaped protrusions 28 a and 28 b are formed along the outlet tube 12 at a predetermined interval on the inner peripheral surface on the proximal end side of the rotary nozzle 14, while A ring-shaped protrusion 29 is also formed on the outer peripheral surface. The outlet tube 12 is a circular tube, and the rotary nozzle 14 has a circular inner peripheral surface at least at the base end thereof.
The predetermined interval between the protrusions 28a and 28b is larger than the axial width of the protrusion 29 itself. Further, as shown in the drawing, the clearance between the outer peripheral surface of the outlet tube 12 and the protrusions 28 a and 28 b is configured to be smaller than the protrusion height of the protrusion 29.

  With this configuration, the protrusion 29 is sandwiched between the protrusions 28a and 28b by press-fitting the distal end of the outlet tube 12 into the rotary nozzle 14 to a depth position where the protrusion 29 fits between the protrusions 28a and 28b. In this state, the outlet tube 12 can rotate along the inner peripheral surface of the rotary nozzle 14. In other words, according to the present embodiment, the rotary nozzle 14 can be rotatably mounted on the tube wall of the outlet tube 12 as a rotation axis. The protrusions 28a and 29 may be latched so that the outlet tube 12 can be easily press-fitted into the rotating nozzle 14 and difficult to pull out.

According to this embodiment, parts such as the rotary shaft 20 are not required as described above, and the rotary nozzle 14 can be attached and detached. Therefore, when the high pressure gas is injected into a narrow injection region as a normal long nozzle, the rotation is performed. When the nozzle 14 is removed and the contents are ejected while being diffused from the rotating outlet 16 as in the present invention, the rotary nozzle 14 can be attached and used.
Further, according to the present embodiment, since it is not necessary to provide the rotation nozzle 14 with the insertion hole 18 for inserting the rotary shaft 20, the high-pressure gas does not leak from the gap between the insertion hole 18 and the rotary shaft 20.
In place of the protrusions 28 a and 28 b, a concave groove that fits with the protrusion 29 may be provided on the inner peripheral surface of the rotary nozzle 14.

  FIG. 5 is a partial longitudinal cross-sectional schematic diagram regarding the front-end | tip part of the nozzle 10 for spraying of 4th embodiment of this invention. This embodiment is a second embodiment (FIG. 3) in that the rotary nozzle 14 is bifurcated toward the tip (right side in the figure), and air outlets 16a and 16b are formed at the respective tips. For example).

In the drawing, the lower half and the upper half of the rotary nozzle 14 have a rotationally symmetric shape around the rotation axis 20. Accordingly, the two outlets 16a and 16b are arranged at rotationally symmetric positions around the rotation axis 20. The blower outlet 16a opens toward an intermediate direction between the rotation axis direction (AX) and the front side of the paper, and the blower outlet 16b opens toward an intermediate direction between the rotation axis direction (AX) and the depth direction of the paper. In other words, the two air outlets 16 a and 16 b are formed at the tip of the rotary nozzle 14 with the same rotational direction component around the rotary shaft 20.
Thus, the reaction force received by the rotary nozzle 14 when the high-pressure gas supplied through the outlet pipe 12 is injected from the outlets 16a and 16b is the same as seen from the common rotational direction, specifically the rotational axis direction (AX). Counterclockwise.

  Thus, by providing a plurality of outlets 16a and 16b at rotationally symmetric positions around the rotary shaft 20 and directing the openings in the same rotational direction, the components in the rotational direction of the reaction force of high-pressure gas injection are added together. Since the radial component is canceled out, the rotary nozzle 14 rotates well around the rotary shaft 20 without causing eccentricity in the radial direction or vibration of the head.

In the present invention, the plurality of air outlets are directed in the same rotational direction means that the high pressure gas injected from one of the air outlets interferes with the high pressure gas injected from the other air outlets, thereby rotating the nozzle 14 is a state in which the reaction force acting on 14 is not canceled out, and it is not necessary to strictly match the opening direction.
The same applies to the rotationally symmetric positions around the rotation axis where the plurality of air outlets are arranged, and it is sufficient if the plurality of air outlets are arranged in a balanced manner around the rotation axis 20.

  In the present embodiment, an example in which one rotating nozzle 14 is branched and a plurality of outlets 16a and 16b are formed at the tip thereof is exemplified. A plurality of rotating nozzles 14 each having a blowout port may be rotatably attached directly to the tip of one or a plurality of outlet pipes 12 or indirectly via another connecting member. .

  FIG. 6 is a partial longitudinal cross-sectional schematic diagram regarding the front-end | tip part of the nozzle 10 for spraying of 5th embodiment of this invention. The rotary nozzle 14 of this embodiment is provided with an axial flow fan (fan) 40 around it. When the rotary nozzle 14 is rotated by jetting high-pressure gas, the fan 40 generates an airflow in the direction of the rotation axis (AX). It differs from the fourth embodiment (see FIG. 5) in that it is generated.

Thereby, in the spray nozzle 10 according to the fourth embodiment, the radial direction (R) component of the high-pressure gas injected from the outlets 16a and 16b is excessive, and the rotational axis direction (AX) component is insufficient. Even in the case where there is a possibility, an axial flow is generated by providing the fan 40 in the rotary nozzle 14 as in the present embodiment, and the reaction force suppresses the rotation of the rotary nozzle 14, and together with the axial flow, the rotary shaft A sufficient injection force in the direction (AX) can be obtained.
That is, by suppressing excessive rotation of the rotary nozzle 14 by the fan 40, diffusion of high-pressure gas is suppressed, and an injection force directed to dust or an object to be coated on an extension line in the rotation axis direction (AX) is improved. Therefore, from this point of view, it is possible to adjust the injection force in the direction of the rotation axis only by providing a rotation resistance that suppresses the rotation of the rotary nozzle 14. In contrast, in the present embodiment, by providing an axial fan in the rotary nozzle 14, the generated rotational resistance is not simply lost, but the suppressed rotational force of the rotary nozzle 14 is converted into an airflow in the direction of the rotational axis. It converts and assists the dust injection force.

As a further modification of the spray nozzle 10 of this embodiment, the fan 40 may be detachable from the rotary nozzle 14. This makes it possible to arbitrarily increase / decrease the injection force in the direction of the rotation axis of the rotary nozzle 14 in consideration of the dust adhesion strength and location, or the coating application range and coating thickness.
From the same point of view, the twist angle of the fan 40 and the mounting angle with respect to the rotary nozzle 14 may be variably adjustable.

FIG. 7 is a partial longitudinal cross-sectional schematic diagram regarding the front-end | tip part of the nozzle 10 for spraying of the 6th embodiment of this invention. In this embodiment, the rotating nozzle 14 includes a brush 42 that protrudes from the tip thereof. Therefore, when the rotary nozzle 14 is rotated by jetting high-pressure gas, the brush 42 also rotates about the rotary shaft 20, so that the jetted surface can be physically wiped in the rotational direction using the brush 42. Further, since the brush 42 is bent in the radial direction by the expansion and rotation diffusion of the high-pressure gas injected from the rotating outlet 16, the wiping of the surface to be ejected by the brush 42 is a combination of the rotation direction and the radial direction. Become.
Therefore, when the spray device 30 is used as a dust spray, according to the spray nozzle 10 of the present embodiment, the dust adhered firmly can be removed by physically wiping from the vertical and horizontal directions with the brush 42.

In addition to a mode in which the brush 42 is planted at the tip of the rotary nozzle 14 as shown in the drawing, the brush 42 may be mounted on the peripheral surface of the rotary nozzle 14 so that the tip of the brush 42 protrudes from the outlet 16. Further, the brush 42 may be provided only inside the blower outlet 16 of the rotary nozzle 14 as shown in the figure, or conversely, it may be provided only outside the blower outlet 16 or so as to surround the blower outlet 16. Also good.
Among these, by providing inside the blower outlet 16, the high pressure gas injected from the blower outlet 16 is prevented from flowing in the direction of the rotation center, and the dust captured on the extension line in the rotation axis direction (AX) is placed on the adhesion target. It is possible to prevent the high pressure gas from being directly injected in the direction of pressing.

It is the partial schematic diagram of the spray nozzle 10 concerning 1st embodiment of this invention, and the spray apparatus 30 provided with the same. It is a partial longitudinal cross-sectional schematic diagram of the nozzle 10 for spraying of 1st embodiment. It is a partial longitudinal cross-sectional schematic diagram of the nozzle 10 for sprays of 2nd embodiment. It is a partial longitudinal cross-sectional schematic diagram of the nozzle 10 for spray of 3rd embodiment. It is a partial longitudinal cross-section schematic diagram of the nozzle 10 for spray of 4th embodiment. It is a partial longitudinal cross-sectional schematic diagram of the nozzle 10 for spray of 5th embodiment. It is a partial longitudinal cross-sectional schematic diagram of the spray nozzle 10 of 6th embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Spray nozzle 12 Lead pipe 14 Rotating nozzle 16a, 16b Outlet 18 Insertion hole 20 Rotating shaft 22 Shaft fixing | fixed part 24 Stopper 26 Space | gap 28a, 28b, 29 Protrusion 30 Spray apparatus 32 Pressure | voltage resistant can 34 Press button 36 Nozzle installation port 40 Fan 42 brushes

Claims (7)

A lead-out pipe that is detachably attached to a spray container that injects the filled contents as a gas or an aerosol-containing gas, and a through-hole communicating with the lead-out pipe is provided therein and is rotatable with respect to the lead-out pipe A spray nozzle having an attached rotating nozzle,
At the tip of the rotary nozzle, an outlet for injecting the contents at a position offset in the radial direction from the rotary axis of the rotary nozzle is directed in a direction that intersects both the rotary axis direction and the radial direction. A spray nozzle characterized by being formed.   The spray nozzle according to claim 1, wherein the content is a high-pressure gas for dust removal.   The rotary nozzle has a plurality of outlets respectively communicating with the outlet pipe at rotationally symmetric positions with respect to the rotation axis, and the plurality of outlets are directed in the same rotational direction around the rotation axis. The nozzle for spraying according to claim 1 or 2 formed.   The spray nozzle according to any one of claims 1 to 3, wherein the rotary nozzle includes a fan that generates an axial flow in the rotation axis direction by rotation of the rotary nozzle.   The spray nozzle according to any one of claims 1 to 4, wherein the rotary nozzle has a brush protruding from a tip thereof. (A) a spray container filled with a high-pressure gas for dust removal;
(B) a derivation pipe detachably attached to the spray container, and a rotation nozzle that is provided with a through hole communicating with the derivation pipe and is rotatably attached to the derivation pipe. The nozzle for spraying is formed at the tip of the rotary nozzle at a position offset in the radial direction from the rotary shaft of the rotary nozzle so that the outlet for injecting the high-pressure gas is directed in a direction intersecting the rotary shaft When,
(C) a valve body that closes or opens the flow of the high-pressure gas from the spray container to the outlet pipe,
A dust-removing spray device that injects the high-pressure gas from the outlet while rotating the rotary nozzle by a high-pressure gas injection force by operating the valve body. (A) a spray container filled with a liquid or powder paint and a compressed propellant;
(B) a derivation pipe detachably attached to the spray container, and a rotation nozzle that is provided with a through hole communicating with the derivation pipe and is rotatably attached to the derivation pipe. The tip of the rotary nozzle has a blowout port for injecting a gas mixture of the aerosol obtained by refining the paint and the vaporized gas of the propellant at a position radially offset from the rotation axis of the rotary nozzle. A spray nozzle formed in a direction crossing the rotation axis;
(C) a valve body that closes or opens the flow of the mixed gas from the spray container to the outlet pipe,
A spraying apparatus for coating that injects the mixed gas from the outlet while rotating the rotary nozzle by the injection force of the mixed gas by operating the valve body.

Images