KR100759928B1 - Liquid sprayer - Google Patents

Abstract

A liquid sprayer is provided to secure good deposition efficiency by keeping low air pressure by spraying liquid through a vane of a rotary cup and to improve work environment by reducing noise and scattering of paint particle. A liquid sprayer is composed of a rotary cup(50) having a vane installed on the outer peripheral surface of one end and a longitudinal liquid passage formed in the center; a nozzle(90) for containing the vane of the rotary cup; a driving unit for selectively rotating the rotary cup; and a liquid containing unit(30) for supplying liquid to the liquid passage of the rotary cup. An inner diameter of the liquid passage of the rotary cup is gradually expanded toward one end.

Description

LIQUID SPRAYER {LIQUID SPRAYER}

1 is a perspective view schematically showing a liquid spray device which is a preferred embodiment of the present invention;

Figure 2 is a perspective view showing a liquid spraying device disassembled the other side,

3 is a cross-sectional view schematically showing a cross-sectional state in which the liquid receiving portion, the rotary cup, the driving portion, and the nozzle are combined.

Figure 4 is an exploded perspective view schematically showing an exploded state of the rotating cup and the nozzle,

5 is a cross-sectional view schematically showing a cross-sectional state of the rotary cup.

6 is a cross-sectional view schematically showing the cross-sectional state of the supply pipe and the central axis.

*** Explanation of symbols for main parts of drawing ***

10: body 30: liquid container

50: rotary cup 510: vane

530: liquid flow path 70: drive unit

710: drive motor 730: drive pulley

750: driven pulley 770: belt

810: operation switch 830: regulator

90: nozzle 910: slit

930: nozzle

The present invention relates to a liquid spraying device, and more particularly, to a liquid spraying device which can improve workability due to the need for a compressor, very easy to store and move, and excellent in atomization performance and arrival efficiency.

In general, a spray gun for spraying liquid using high pressure air of a compressor has been widely used as a liquid spray device.

When painting with spray guns, many additional equipment such as paint cups, pressure regulators, moisture removers, and air hoses are required, resulting in very high system construction costs and inconvenient storage and transport.

In addition, as the spraying action is caused by the high pressure air of the compressor, the arrival efficiency is not good, so the loss of the paint is large, and there is a problem in that the working environment is not good due to noise pollution and scattering paint particles generated by the compressor during operation.

The present invention for overcoming the problems of the conventional liquid spray device, such as a compressor spray gun is easy to store and move without using a compressor, excellent in atomization performance and arrival efficiency as well as noise pollution, paint particles The purpose of the present invention is to provide a liquid spray device that can greatly improve the working environment by minimizing scattering.

The present invention devised to achieve the above object is a vane is formed on the outer peripheral surface of one end, the rotary cup formed in the longitudinal liquid flow path in the center; A nozzle to receive the vane of the rotary cup; A drive unit for selectively rotating the rotary cup; It provides a liquid spraying device comprising a; liquid receiving portion for supplying a liquid to the liquid flow path of the rotary cup.

In particular, the liquid flow path of the rotary cup is preferably expanded in the inner diameter toward one end.

In addition, the regulator is preferably provided with a regulator for controlling the amount of liquid flowing into the liquid flow path of the rotary cup from the liquid receiving portion.

In addition, a valve for selectively opening and closing the space in which the liquid flows into the liquid flow path of the rotary cup from the liquid receiving portion is further provided, the valve is more preferably configured to interlock with the drive of the drive unit.

Hereinafter, the liquid spray device of the present invention will be described in detail with reference to a preferred embodiment as follows, and the scope of the present invention is not limited to the following examples, and the scope of the present invention is within the scope without departing from the technical gist of the present invention. Of course, various modifications can be made by those skilled in the art.

Figure 1 is a perspective view schematically showing a liquid spray device which is a preferred embodiment of the present invention, Figure 2 is a perspective view showing a liquid spray device disassembled the other body, Figure 3 is a liquid receiving portion, the rotary cup, the drive unit and the nozzle is coupled It is sectional drawing which shows roughly the cross-sectional state.

The liquid spray device of the present invention is composed of a body 10, a liquid receiving portion 30, a rotary cup 50, a drive unit 70 and a nozzle 90 as shown in Figs.

First, the body 10 constitutes the external shape of the liquid spray device of the present invention, and is for fixing and mounting the rotary cup 50, the nozzle 90, the drive unit 70 and the liquid receiving unit 30, 1 and 2, but is composed of one side body 110, the other side body 130 is assembled in a state in which the drive unit is built in the one side body 110, but is not limited to this can be modified in various forms. have.

And the liquid receiving portion 30 is for receiving a liquid, such as paint to be sprayed to smoothly supply the liquid to the rotary cup 50, is selectively fixed to the upper portion of the body (10).

The lower portion of the liquid receiving portion 30 as shown in Figure 3 is formed with a protruding outlet 310 is formed so that the liquid contained in the liquid receiving portion 30 flows smoothly and quantitatively by its own weight, The upper portion is provided with a supply pipe 410 that is selectively coupled to the outlet 310 watertight.

An expansion part 412 is formed at the upper end of the supply pipe 410 to selectively discharge the outlet 310 in a tight manner, and the outlet 310 and the expansion part 412 are tightly coupled to each other such as an O-ring. It is preferable that the sealing member be placed.

1 to 3, the liquid receiving part 30 is fixedly installed on the upper portion of the body 10 so that the liquid flows smoothly into the rotary cup 50 by the weight of the liquid contained in the liquid receiving part 30. Although configured to be supplied, it may be fixed to the lower portion of the body 10 to supply the liquid to the rotary cup 50, it may also supply liquid to the rotary cup 50 using a separate supply device. Of course.

4 is an exploded perspective view schematically illustrating an exploded state of the rotating cup and the nozzle, and FIG. 5 is a cross-sectional view schematically illustrating a cross-sectional state of the rotating cup.

The rotary cup 50 is to atomize the liquid supplied from the liquid containing portion 30, and to atomize the atomized liquid through the nozzle 90, as shown in Figure 4 and 5 on the outer peripheral surface A vane 510 is formed, and a longitudinal liquid channel 530 is formed at the center thereof.

And the rotary cup 50 and the supply pipe 410 is connected by a hollow central shaft 430 as shown in Figures 2 and 3, the liquid contained in the liquid receiving portion 30 to the rotary cup 50 It is supplied to the liquid passage 530 of. One side of the hollow central shaft 430 is formed with an inlet hole 432 is in tight communication with the lower end of the supply pipe 410.

The rotary cup 50 is rotated by the rotation of the drive unit 70 embedded in the body (10).

2 and 3, the driving unit 70 includes a driving motor 710 embedded in the body 10, a shaft 712 of the driving motor 710, and the other end of the rotary cup 50. It is composed of a driving pulley 730 and driven pulley 750, respectively, and a belt 770 connecting the driving pulley 730 and the driven pulley 750, respectively.

In FIGS. 2 and 3, the driving unit 70 includes the driving motor 710, the driving pulley 730, the driven pulley 750, and the belt 770, but the driving pulley 730, and The helical gear may be used instead of the driven pulley 750 and the belt 770, and the pulley 750 and the belt 770 may be any structure that can rotate the rotary cup 50.

In addition, the driving motor 710 is supplied by a power supply, and a method of supplying power to the driving motor 710 is not shown in the drawing, but by using a battery built in a battery in the body 10. Of course, the driving motor 710 may be driven, and the driving motor 710 may be connected by an external power source and a cable to drive the driving motor 710.

The driving motor 710 as described above is preferably selectively driven by the operation switch 810 separately mounted to the body 10 as shown in FIG.

The nozzle 90 accommodates the vane 510 of the rotary cup 50 that is rotated by the driving motor 710 as shown in FIG. 3.

2 and 3, the other end is selectively fixed to the body 10, and a plurality of slits 910 are formed at the outer circumference of the other side, and one end thereof is the rotary cup 50. An injection hole 930 is formed to receive the vane 510 and to inject air generated by the rotation of the vane 510.

The plurality of slits 910 of the nozzle 90 are intended to smoothly introduce external air into the vane 510 when the vane 510 of the rotary cup 50 rotates.

On the other hand, by adjusting the position of the injection port 930 of the nozzle 90 relative to one end of the rotary cup 50, the shape and spray of the liquid spray sprayed through the liquid flow path 530 of the rotary cup 50 The distance can be adjusted easily.

When the rotary cup 50 is rotated by the drive unit 70, the air generated by the vane 510 is rapidly moved into the space between the rotary cup 50 and the injection hole 930 of the nozzle 90. Sprayed at speed. Accordingly, according to Bernoulli's theorem, the portion where air is injected at high speed is located, that is, the space between the outer periphery of the rotary cup 50 and the nozzle 90 is in a low pressure state, and is located in the air being injected at high speed. Since the liquid passage 530 of the rotary cup 50 is made at a high pressure, the liquid supplied to the sieve passage 530 of the rotary cup 50 is out of the liquid passage 530 of the rotary cup 50. It is aspirated and sprayed.

In addition, since the liquid contained in the liquid receiving part 30 passes through the liquid passage 530 rotated by the rotation of the rotary cup 50, a liquid film is formed on the inner circumferential surface of the liquid passage 530 by centrifugal force. As the thickness of the liquid film becomes thinner toward one end of the rotary cup 50, the distribution becomes uniform, and uniform droplets are formed.

When the end of the rotary cup 50 is reached, the liquid film formed on the inner circumferential surface of the liquid passage 530 is promoted, so that the atomization can be effectively atomized and sprayed.

When the rotary cup 50 is rotated by the drive unit 70, the air generated by the vane 510 is rapidly moved into the space between the rotary cup 50 and the injection hole 930 of the nozzle 90. Sprayed outward at speed.

In addition, since the liquid contained in the liquid receiving part 30 passes through the liquid passage 530 which is rotated by the rotation of the rotary cup 50, a liquid film is formed on the inner circumferential surface of the liquid passage 530 by centrifugal force. The thickness of the liquid film becomes thinner in the direction.

The liquid ejected from the rotary cup 50 is ejected in the form of a liquid film in the vicinity of the rotary cup 50, and the liquid is atomized into fine and uniform droplets at the edge of the liquid film.

By the contact of the liquid ejected from the one end of the rotary cup 50 in the form of a liquid film and the air injected at a high speed from the injection port 930 can further promote the splitting of the liquid film and maximize the atomization and control the shape of the spray can do.

In addition, the liquid passage 530 maximizes atomization of the liquid by the rotary cup 50 and the liquid contained in the liquid receiving portion 30 through the liquid passage 530 is smoothly drawn out of the liquid passage 530. ) Is preferably configured such that the inner diameter is enlarged (α) toward one end from the other end as shown in FIG. 5.

That is, since the inner diameter is increased toward one end of the liquid passage 530, the centrifugal force acts toward the one end of the liquid passage 530, and the contact area of the liquid is enlarged so that the thickness of the liquid film becomes thinner. The liquid can be atomized and sprayed more effectively.

In addition, as shown in FIGS. 1 to 3, it is more preferable that a regulator 830 is provided to adjust the amount of liquid flowing from the liquid accommodating part 30 into the liquid channel 530 of the rotary cup 50.

The regulator 830 is inserted into the central axis 430 as shown in Figure 3 and the control pin 832 to selectively open and close the inlet hole 432 of the central axis 430, and the control pin 832 It consists of a knob 834 formed at the other end.

When the knob 834 is rotated in the tightening direction, the adjustment pin 832 gradually closes the inlet hole 432 of the central shaft 430, and when the knob 834 is rotated in the release direction, the adjustment pin is rotated. 832 gradually opens the inlet hole 432 of the central shaft 430 so that liquid is supplied to the liquid channel 530 of the rotary cup 50 through the central shaft 430.

At this time, according to the degree of rotation of the release direction of the knob 834, the inflow of the liquid by the inlet hole 432 of the central axis 430 can be easily adjusted the spray amount of the liquid.

Meanwhile, in FIG. 3, the adjusting pin 832 of the regulator 830 opens and closes the inlet hole 432 of the central axis 430 to adjust the amount of liquid introduced into the liquid channel 530 of the rotating cap. However, the present invention is not limited thereto, and the flow rate of the liquid may be adjusted by directly opening and closing the supply pipe 410.

In addition, the regulator 830 is composed of the control pin 832 and the knob 834, but is not limited thereto, and the amount of liquid flowing into the liquid passage 530 of the rotary cup 50 is selectively selected. If the shape and structure can be adjusted to be sufficient.

6 is a cross-sectional view schematically showing the cross-sectional state of the supply pipe and the central axis.

Although not shown in the drawings, a valve for selectively opening and closing a space into which the liquid flows from the liquid container 30 to the liquid channel 530 of the rotary cup 50 is further provided.

Here, 'the space in which the liquid flows into the liquid flow path 530 of the rotary cup 50' is a flow path of the supply pipe 410 (A of FIG. 6), a flow path of the central axis 430 (B of FIG. 6). ) Or any one of the liquid flow path 530 of the rotary cup (50).

The valve may be configured to open and close according to the operation of the operation switch 810. That is, when the driving motor 710 which is the driving unit 70 rotates by operating the operation switch 810, the valve is opened, and the driving motor 710 is rotated because the operation switch 810 is not operated. If not, the valve is configured to close.

As a method of configuring the valve to be interlocked with the operation switch 810, there is a method of connecting a link and the like mechanically, a method of configuring the valve as a solenoid valve and electrically interlocking.

As such, when the valve is interlocked with the operation switch 810, it is possible to simply spray the liquid contained in the liquid accommodating part 30 by simply operating the operation switch 810 without opening the valve separately. There is an easy advantage.

As described above, the liquid spraying device of the present invention does not need a separate compressor like the conventional liquid spraying device, so it is very easy to store and move, and the spraying action is generated by the vane of the rotary cup. Compared to the air pressure is relatively low compared to the arrival efficiency is very good, there is less noise pollution and scattering of paint particles, it is possible to greatly improve the working environment.

In addition, the liquid film is formed on the inner circumferential surface of the liquid flow path by the centrifugal force acting on the liquid flow path of the rotary cup as the rotary cup rotates, and the liquid film becomes thinner as the end of the rotary cup reaches one end, and atomization is performed near the rotary cup. By maximizing, the liquid can be effectively atomized and sprayed.

In addition, the inner diameter of the liquid flow path of the rotary cup is enlarged toward one end, so that the centrifugal force acts toward the one end of the rotary cup to further atomize the liquid and downward toward the one end of the rotary cup. As the slope is inclined, the liquid is smoothly moved to one end of the rotary cup.

In addition, by providing a regulator for adjusting the amount of the liquid flowing into the liquid flow path of the rotary cup from the liquid container, there is an effect that can easily adjust the spray amount of the liquid.

In addition, further comprising a valve for selectively opening and closing the space in which the liquid flows into the liquid flow path of the rotary cup from the liquid receiving portion, by configuring the valve to interlock with the drive unit, the valve at the same time as the drive of the drive unit Since the liquid contained in the liquid container is opened and closed and supplied to the liquid flow path of the rotary cup, the user does not need to open and close the valve separately.

Claims (4)

A rotary cup having a vane formed at an outer circumferential surface of one end thereof, and having a liquid flow path formed in a longitudinal direction at its center; A nozzle to receive the vane of the rotary cup; A drive unit for selectively rotating the rotary cup; And a liquid accommodating part for supplying liquid to the liquid flow path of the rotary cup. The liquid spray apparatus according to claim 1, wherein an inner diameter of the liquid flow path of the rotary cup increases toward one end. The liquid spraying device according to claim 1, further comprising a regulator for controlling the amount of liquid flowing from the liquid container into the liquid flow path of the rotary cup. The valve according to any one of claims 1 to 3, further comprising a valve for selectively opening and closing a space into which the liquid flows from the liquid container into the liquid channel of the rotary cup, And the valve is configured to interlock with the driving of the drive unit.

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