KR102396498B1 - Dual air curtain type paint spraying device for anti-scattering for painting wall of apartment - Google Patents

Abstract

A dual air curtain type anti-scattering paint spraying device for painting the wall of an apartment according to an embodiment of the present invention comprises: a spray gun connected to a paint supply hose and having a gun nozzle spraying paint in the front; a bracket to which the head of the spray gun is coupled and fixed so that the gun nozzle is disposed in the front; a first connector coupled and fixed to the rear of the bracket and connected to an air hose; a second connector coupled and fixed to the rear of the bracket and connected to a vacuum hose; and a horn cover formed in a horn shape and coupled to the front of the bracket. The horn cover includes an inner cover and an outer cover spaced apart from each other. The space between the inner cover and the outer cover defines a suction port. The inner cover includes an inner cover passage for moving compressed air supplied from the first connector and a first spray nozzle disposed at an end thereof. The outer cover includes an outer cover passage for moving the compressed air supplied from the first connector and a second spray nozzle disposed at an end thereof. The suction port includes a suction passage through which sucked air is moved into the second connector. Accordingly, work efficiency can be increased.

Description

DUAL AIR CURTAIN TYPE PAINT SPRAYING DEVICE FOR ANTI-SCATTERING FOR PAINTING WALL OF APARTMENT}

The present invention relates to an anti-scattering paint spraying device, and more particularly, to an air curtain type anti-scattering paint spraying device.

In general, a paint spraying device such as a spray gun for spraying a painting liquid such as a paint liquid is used for painting and painting of a building. A spray gun is a painting tool that sprays a painting solution with the power of compressed air, and is mainly used for painting interior and exterior walls of buildings.

However, when spraying the coating liquid on the painted surface using a spray gun, there is a problem in that the particles of the coating liquid are not only sprayed on the painted surface but are scattered around the surface. If the wind blows during outdoor work, the sprayed paint is blown away by the wind, making it difficult to accurately paint, and scattered paint particles contaminate the surroundings or cause damage to passersby.

In order to solve this problem, a paint spraying device employing an air curtain method in a spray gun has been disclosed. Korean Patent Registration No. 10-2242599 discloses a spray gun for forming an air curtain outside an area where air is sprayed. However, even if there is an air curtain, there is a limitation in that some paint particles may leak out of the air curtain during work.

Korean Patent Registration No. 10-2161397 discloses a paint spraying device having a dust collector for sucking paint in addition to a spray nozzle that generates an air curtain. In this method, a dust collector is provided outside the inner area where the air curtain is formed, so the case of paint leaking out of the air curtain is reduced. The disadvantage was that this was wasted and the operation time was long.

Therefore, there is a need to develop a paint spraying device capable of improving the efficiency of a painting operation while preventing external leakage of the paint particles.

Korean Patent Registration No. 10-2242599 (April 15, 2021) Korean Patent Registration No. 10-2161397 (2020.09.23)

An object of the present invention is to provide a paint spraying apparatus capable of increasing work efficiency without wasting paint while preventing external leakage of paint.

A dual air curtain type scattering prevention paint spraying device for solving the above problems includes: a spray gun connected to a paint supply hose and having a gun nozzle for spraying paint in front; a bracket to which the head of the spray gun is coupled and fixed so that the gun nozzle is disposed in the front; A first connector coupled to the rear of the bracket and connected to the air hose; a second connector coupled to the rear of the bracket and connected to the vacuum hose; and a horn cover configured in a horn shape and coupled to the front of the bracket, wherein the base horn cover comprises an inner cover and an outer cover spaced apart from each other, and the space between the inner cover and the outer cover is a suction port. The inner cover includes an inner cover passage for moving the compressed air supplied from the first connector and a first injection nozzle disposed at the end, and the outer cover of the group includes compressed air supplied from the first connector. It includes an outer cover passage for moving and a second injection nozzle disposed at the end, and the unit suction port may include a suction passage for moving the sucked air to the second connector.

In one embodiment, a locking jaw is formed in a space between the inner cover and the outer cover, and it may further include a ring-shaped filter disposed to be detachably attached to the locking jaw by a fixing member.

In one embodiment, the filter may be formed of a plastic or metal material in which a plurality of fine through-holes are formed.

In one embodiment, the filter may be composed of a first filter and a second filter that are sequentially stacked.

In one embodiment, the inner cover passage and the outer cover passage may be formed to become narrower in width toward the end of the horn cover, and the suction passage may be formed to become wider toward the end of the horn cover.

In one embodiment, the horn cover includes a horn cover end coupled to the bracket, and the horn cover end includes a first passage connected to the inner cover passage, and a second passage connected to the outer cover passage. and a third passage connected to the suction passage, and the bracket includes a first partition wall (W1) and a second partition wall (W2) formed inside the first partition wall (W1). a first space H1 outside the first partition wall W1, a second space H2 between the first partition wall W1 and the second partition wall W2, and the second partition wall (W2) defines an inner third space (H3), the horn cover end is coupled to the bracket, the first passage is in communication with the third space (H3), the second passage is the first space Interlocking with (H1), the third passage may be in communication with the second space (H2).

In an embodiment, the first space H1 and the third space H1 may be configured to communicate with the first connector.

In an exemplary embodiment, the third space H1 may be configured to communicate with the first space H1.

In an embodiment, a light source unit emitting light in a direction in which the compressed air is injected may be formed in the first injection nozzle.

In an embodiment, a distance measuring sensor may be provided in the gun nozzle, and the injection pressure of the gun nozzle may be controlled based on a distance value measured by the distance measuring sensor to the wall.

The dual air curtain type scattering prevention paint spraying device according to an embodiment of the present invention has the effect of increasing work efficiency without wasting paint while preventing external leakage of paint.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a side view of a dual air curtain type scattering prevention paint spraying device according to an embodiment of the present invention.
2 is a side cross-sectional view of a dual air curtain method scattering prevention paint spraying device according to an embodiment of the present invention.
3 is an exploded view of the paint spraying device of FIG.
4 is an exploded perspective view of a horn cover and a bracket of the paint spraying device of the present invention.
5 is an exploded perspective view of the horn cover of the paint spraying device of the present invention.
6 is a conceptual diagram illustrating the operation of the dual air curtain method scattering prevention paint spraying device according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a dual air curtain method scattering prevention paint spraying device according to an embodiment of the present invention will be described with reference to the drawings.

1 is a side view of a dual air curtain method shatterproof paint spraying device according to an embodiment of the present invention, and FIG. 2 is a side cross-sectional view of a dual air curtain method shatterproof paint spraying device according to an embodiment of the present invention, FIG. 3 is an exploded view of the paint spraying device of FIG. 2, FIG. 4 is an exploded perspective view of the horn cover and bracket of the paint spraying device of the present invention, and FIG. 5 is an exploded perspective view of the horn cover of the paint spraying device of the present invention.

1 to 5 , the dual air curtain method scattering prevention paint spraying device 100 according to an embodiment of the present invention includes a spray gun 10 , a bracket 20 and a horn cover 50 . do.

The head 11 of the spray gun 10 is coupled and fixed to the bracket 20 , and the paint supply hose 15 is connected to the handle of the spray gun 10 .

Although not shown in the drawings, the paint supply hose 15 may be connected to the paint supply device. The paint supply device may include a pump unit that supplies the paint solution to the paint supply hose 15 .

A gun nozzle 11a is disposed at the end of the head 11 of the spray gun 10 to spray the paint liquid delivered from the paint supply hose 15 in the form of particles by pressure.

The bracket 20 may be configured in a circular shape with a through hole 24 formed in the center. The head 11 may be coupled to the through hole 24 of the bracket 20 through the coupling ring 25 .

The coupling ring 25 is configured to be fitted between the through hole 24 and the head 11 and may be formed of an elastic material having a certain elasticity. However, this is only one embodiment, and various forms capable of coupling the head 11 to the through hole 24 may be possible.

A first connector 22 and a second connector 23 are coupled and fixed to the rear of the bracket 20 .

An air hose 35 may be coupled to the first connector 22 , and a vacuum hose 45 may be coupled to the second connector 23 .

Although not shown in the drawings, the air hose 35 may be connected to an air supply device for supplying compressed air. The air supply device may include a pump for supplying compressed air.

As shown in FIG. 4 , the bracket 20 includes a bracket body 21 including an inner rim portion and an outer rim portion in which a through hole 24 is formed in the center.

A first partition wall W1 and a second partition wall W2 are formed between the inner and outer edge portions.

The first dividing wall W1 is formed in a circular ring shape adjacent to the outer periphery of the bracket 20 .

The second dividing wall W2 is formed in a circular ring shape adjacent to the inner periphery of the bracket 20 .

The bracket 20 includes a first space H1 outside of the first partition wall W1, the first partition wall W1, and the second partition wall W1 through the first partition wall W1 and the second partition wall W2. A second space H2 between the walls W2 and a third space H3 inside the second partition wall W2 are defined.

The first space (H1), the second space (H2), and the third space (H3) are spaces partitioned by the first partition wall (W1) and the second partition wall (W2) as described above, and a horn cover end portion to be described later. (54) is combined to become a space in which compressed air moves or sucked air moves.

The horn cover 50 is formed in a horn shape and is coupled to the front of the bracket 20 . A horn cover end 54 is formed at one end of the horn cover 50 having a small inner diameter, and the horn cover end 54 has a first space H1, a second space H2, and a third space of the bracket 20. It has an internal configuration coupled to engage the space H3, which will be described later.

When the horn cover 50 and the spray gun 10 are coupled to the bracket 20, the gun nozzle 11a of the spray gun 10 is disposed inside the one side of the horn cover 50 having a small inner diameter, and the spray gun During operation (10), the paint particles sprayed from the gun nozzle 11a are prevented from scattering to the outside.

The horn cover 50 is configured to include an inner cover 51 and an outer cover 52 spaced apart from each other.

The outer cover 52 is configured in a horn shape to form a horn-shaped outer edge of the horn cover 50 , and the inner cover 51 has a smaller inner diameter compared to the outer cover 52 , so that the inner side of the outer cover 52 . is placed on

The inner cover 51 is configured to include an inner cover passage for moving the compressed air supplied from the first connector 22 and a first injection nozzle 51a disposed at the end.

The outer cover 52 is configured to include an outer cover passage for moving the compressed air supplied from the first connector 22 and a second injection nozzle 52a disposed at the end.

The space between the inner cover 51 and the outer cover 51 defines a suction port 53 , and the suction port 53 includes a suction passage for moving the sucked air to the second connector 23 .

At the end of the space between the inner cover 51 and the outer cover 52 with a large outer diameter, a locking jaw 55 is formed, and a ring-shaped filter (57, 58) is formed on the locking jaw 55 by fixing members 57 and 58. 60, 70) may be detachably coupled.

The inner cover passage of the inner cover 51 and the outer cover passage of the outer cover 52 are formed to be narrower in width toward the end of the horn cover 50 , and the suction passage of the suction port 53 is the horn cover 50 . It may be formed so that the width increases toward the end.

Since the inner cover passage and the outer cover passage are formed to become narrower toward the end of the horn cover 50, the injection efficiency of compressed air can be increased.

In addition, the suction passage is formed to be wider toward the end of the horn cover 50, so that the suction efficiency of sucking the scattered paint particles can be increased.

The filters 60 and 70 may include a ring-shaped first filter 60 and a second filter 70 . The first filter 60 and the second filter 70 may be sequentially stacked on the locking protrusion 55 , and may be fixed by fixing members 57 and 58 .

Referring to FIG. 5 , the first filter 60 and the second filter 70 are formed of a plastic or metal material having a plurality of fine through-holes formed therein, and are ring-shaped filters fitted to the locking jaws 55 . You can see that it can be configured.

The reason that the first filter 60 and the second filter 70 are formed of a plastic or metal material is to enable reuse.

In FIG. 5, for convenience, the fixing members 57 and 58 are not shown, and when the first filter 60 and the second filter 70 are sequentially stacked on the locking jaw 55, the horn cover 50 is leaked outside. The air containing the paint enters the suction port 53 through the minute through-holes of the first filter 60 and the second filter 70 .

In this case, since the paint particles in the air are attached to the first filter 60 and the second filter 70 , the effect of filtering the paint particles may be exhibited.

When the work is finished, the operator removes the fixing members 57 and 58, separates the first filter 60 and the second filter 70, and washes them, so that they can be reused later.

However, the above is only an embodiment, and the first filter 60 and the second filter 70 may be configured as a paper filter instead of a metal or plastic material, and the number of filters is configured as a single filter instead of two. Or it may be possible to configure three or more.

The horn cover end 54 is a part coupled to the bracket 20, and has a first passage 51b connected to the inner cover passage, a second passage 52b connected to the outer cover passage, and a suction passage. It is configured to include a third passage (53b).

When the horn cover end 54 is coupled to the bracket 20, the first passage 51b communicates with the third space H3, the second passage 52b communicates with the first space H1, and the third The passage 53b may communicate with the second space H2.

For the structure to communicate as described above, a first partition wall 54a and a second partition wall 54b are formed inside the horn cover end 54, and the first partition wall 54a and the second partition wall 54b ), the first passage 51b, the second passage 52b, and the third passage 53b are defined.

The first space H1 and the third space H3 may be configured to communicate with the first connector 22 . Specifically, the third space H3 may be configured to communicate with the first space H1 .

Referring to FIG. 3 , the first space H1 communicates with the first connector 20 through the inner passage, and the third space H3 may be configured to communicate with the inner passage through a separate passage.

In addition to this method, the third space H3 may be configured to directly communicate with the first space H1 through a separate passage.

When configured as described above, the compressed air supplied to the first connector 22 can be supplied to both the first space H1 and the third space H3, so it is sufficient if only one connector to which the compressed air is supplied is disposed. There is this.

On the other hand, the second space H2 is configured to communicate with the second connector 23 through the inner passage, and the air containing the paint is sucked through the suction port 53 by the vacuum suction pressure generated by the second connector 23 . can do.

6 is a conceptual diagram illustrating the operation of the dual air curtain method scattering prevention paint spraying device according to an embodiment of the present invention.

Referring to FIG. 6 , when the operator presses the handle of the spray gun 10 to operate, the paint particles are sprayed from the gun nozzle 11a to the wall 5 to be worked. The wall 5 can be, for example, an outer wall of a building, such as an apartment building.

In addition, compressed air supplied by the air hose 35 is injected to the wall 5 through the first injection nozzle 51a and the second injection nozzle 52a, and the vacuum pressure generated by the vacuum hose 45 By this, the air outside the suction port 53 is sucked into the suction port 53 .

As shown in FIG. 6 , a dual air curtain is formed by the first injection nozzle 51a and the second injection nozzle 52a, so that the scattering of the paint sprayed from the gun nozzle 11a is effectively blocked.

In more detail, scattering of the sprayed paint is primarily blocked by the first air curtain generated by the first spray nozzle 51a. In this configuration, since there is no suction device inside the first air curtain, the sprayed paint can be continuously attached to the wall 5 without wasting the sprayed paint.

However, as the distance between the horn cover 50 and the wall 5 varies during operation, some of the paint particles may leak to the outside of the first air curtain.

Even if some of the paint particles leak out of the first air curtain, scattering is blocked secondary by the second air curtain generated by the second injection nozzle 52a.

In particular, the leaking paint is sucked toward the suction port 53 by the vacuum pressure generated in the suction port 53 so as to completely block external scattering of the leaking paint.

As the air containing the paint is sucked toward the suction port 53 , most of the paint is adsorbed to the first filter 60 and the second filter 70 .

By operating in this way, it is possible to paint the wall 5 without wasting paint in the first air curtain, and some leaking paint particles can be sucked in by the suction device to block external leakage, and a filter that can be washed and reused Through (60, 70), it is possible to improve the work efficiency.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention. do.

100: paint spraying device 5: wall
10: spray gun 11: head
11a: gun nozzle 15: paint supply hose
20: bracket 21: bracket body
22: first connector 23: second connector
24: through hole 25: coupling ring
35: air hose 45: vacuum hose
50: horn cover 51: inner cover
51a: first injection nozzle 51b: first passage
52: outer cover 52a: second injection nozzle
52b: second passage 53: intake port
53b: third passage 54: horn cover end
54a: first dividing wall 54b: second dividing wall
55: locking jaw 57, 58: fixing member
60: first filter 70: second filter
H1: first space H2: second space
H3: third space W1: first partition wall
W2: second bulkhead

Claims (10)

a spray gun connected to the paint supply hose and having a gun nozzle for spraying paint in front;
a bracket to which the head of the spray gun is coupled and fixed so that the gun nozzle is disposed in front;
a first connector coupled to and fixed to the rear of the bracket and connected to the air hose;
a second connector coupled to and fixed to the rear of the bracket and connected to a vacuum hose; and
It is configured in a horn shape and includes a horn cover coupled to the front of the bracket,
The horn cover is configured to include an inner cover and an outer cover spaced apart from each other,
A space between the inner cover and the outer cover defines a suction port,
The inner cover includes an inner cover passage for moving the compressed air supplied from the first connector and a first injection nozzle disposed at the end,
The outer cover includes an outer cover passage for moving the compressed air supplied from the first connector and a second injection nozzle disposed at the end,
The suction port is a dual air curtain type shatterproof paint spraying device including a suction passage for moving the sucked air to the second connector According to claim 1,
A locking jaw is formed in the space between the inner cover and the outer cover,
The dual air curtain type scattering prevention paint spraying device further comprising a ring-shaped filter disposed on the locking jaw to be detachably attached by a fixing member. 3. The method of claim 2,
The filter is a dual air curtain type shatterproof paint spraying device, characterized in that it is formed of a plastic or metal material having a plurality of fine through-holes formed therein. 4. The method of claim 3,
The filter is a dual air curtain type shatterproof paint spraying device, characterized in that it is composed of a first filter and a second filter that are sequentially stacked. According to claim 1,
The inner cover passage and the outer cover passage are formed to become narrower in width toward the end of the horn cover,
The dual air curtain type scattering equipment paint spraying device, characterized in that the suction passage is formed to become wider toward the end of the horn cover. According to claim 1,
The horn cover is configured to include a horn cover end coupled to the bracket,
The horn cover end portion is configured to include a first passage connected to the inner cover passage, a second passage connected to the outer cover passage, and a third passage connected to the suction passage,
The bracket includes a first partition wall W1 and a first space H1 outside the first partition wall W1 through a second partition wall W2 formed inside the first partition wall W1. ), a second space H2 between the first partition wall W1 and the second partition wall W2 and a third space H3 inside the second partition wall W2,
The horn cover end is coupled to the bracket so that the first passage communicates with the third space H3, the second passage communicates with the first space H1, and the third passage communicates with the second space H1. A dual air curtain type scattering site paint spraying device, characterized in that it communicates with the space (H2). 7. The method of claim 6,
The first space (H1) and the third space (H3) are configured to communicate with the first connector. 8. The method of claim 7,
The third space (H3) is a dual air curtain type scattering prevention paint spraying device, characterized in that it communicates with the first space (H1). According to claim 1,
The dual air curtain type anti-scattering paint spraying device, characterized in that the first spray nozzle is formed with a light source emitting light in the direction in which the compressed air is sprayed. According to claim 1,
The gun nozzle is provided with a distance measuring sensor, and the spray pressure of the gun nozzle is controlled based on the distance value from the wall measured by the distance measuring sensor.

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