KR102168410B1 - Gun-type spray device for underwater coating - Google Patents

Abstract

The present invention relates to a gun-type underwater coating spraying device for coating the surface of an offshore structure underwater, a body, a paint tank detachably coupled to one side of the body, and detachably coupled to the other side of the body, A discharge part spaced apart from the paint tank, a paint transfer pipe provided inside the main body and connecting the paint tank and the discharge part so that the paint in the paint tank is discharged to the outside through the discharge part, and connected to the paint transfer pipe, A first valve for controlling a flow rate of paint that is moved from the paint tank to the paint transfer pipe, and a pressure supply unit provided inside the main body and transferring pressure to the first valve to open and close the first valve, and the The discharge unit includes a nozzle body connected to an end of the paint transfer pipe, and a second valve provided on one side of the nozzle body and for discharging the paint to the outside while blocking the inflow of external water into the nozzle body.
According to the present invention having the above configuration, it has a structure in which the paint stored in the paint tank is sprayed through the discharge part by a simple operation of the operator while blocking the inflow of water into the body from underwater, improving usability and workability, and cleaning and reuse It has the advantage of being easy.

Description

Gun-type underwater coating spraying device {GUN-TYPE SPRAY DEVICE FOR UNDERWATER COATING}

The present invention relates to a gun-type underwater coating spraying device, and more specifically, a type of spraying device for performing underwater coating work for the purpose of underwater repair or surface method targeting a local area in the water. It is an economical and reusable underwater coating spraying device that does not require a hose.

In general, when it is difficult to lift offshore concrete structures, ship structures, offshore plant structures, etc. that require coating or repair work underwater, it is necessary to perform repair work underwater.

The device for coating such as underwater structures is different from the general devices performed in the air because the work is performed in water, and in order to perform the coating work in water, the worker applies paint to the surface of the object in a submerged state. A method such as applying may be used.

As a device for performing an operation such as coating in water, Korean Patent Registration No. 10-0519974 discloses an underwater coating device using air pressure.

In the registered patent, a handle case and an internal stirring chamber are formed, and the stirring chamber stirs the paint injected from the paint injection port while the stirring screw rotates by pneumatic pressure and discharges it into the injection tube. The handle case is provided with an air passage through which air is introduced and discharged to deliver air to the stirring chamber, and the paint is moved to the injection tube as the user operates the valve switch. In this case, a brush is installed on one side of the injection tube to spray paint while removing foreign substances on the surface of the structure. In the above registered patent having the above structure, the paint agitated in water is discharged to the injection tube by pneumatic pressure at the same time as stirring, thereby making the operation quick and easy. However, due to the structure of simply spraying the air pressure and paint from the outside, there is a limit to the location of use, and the paint is stored in the external hose that supplies the paint when working underwater, resulting in a high paint loss rate, and the paint is not supplied smoothly by water pressure. There is a problem. In addition, there is a problem in that the sprayed paint is scattered in water so that the object cannot be efficiently achieved.

(Document 0001) Korean Patent Registration No. 10-0519974 (Registration Date: 05.09.30.)

In view of the above points, an object of the present invention is to provide a gun-type underwater coating spraying device that minimizes paint loss and facilitates coating work in water.

The gun-type underwater coating spraying device according to the present invention for achieving the above object includes a main body, a paint tank detachably coupled to one side of the main body, a discharge unit detachably coupled to the other side of the main body, and spaced apart from the paint tank, A first valve provided inside, a paint transfer pipe connecting the paint tank and the discharge part so that the paint in the paint tank is discharged to the outside through the discharge part, and a first valve connected to the paint transfer pipe to control the flow rate of the paint transferred from the paint tank to the paint transfer pipe, and It is provided inside the main body and includes a pressure supply unit that transfers pressure to the first valve to open and close the first valve, and the discharge unit is provided on one side of the nozzle body and the nozzle body connected to the end of the paint transfer pipe. It includes a second valve for discharging the paint to the outside while blocking the inflow of external water.

In addition, the pressure supply unit passes through the compression housing and one side of the compression housing and protrudes to the outside of the main body and communicates with the driving member and the compression housing capable of performing the piston movement, and the pressure generated by the piston movement of the driving member is transferred to the first valve. It may include a pressure transfer pipe to transmit.

In addition, the pressure supply unit may further include a restoring member provided inside the compression housing and applying an elastic force to the driving member.

In addition, the discharge unit may further include a brush provided on one side of the nozzle body and capable of contacting the coating object.

In addition, a plurality of second valves may be disposed radially based on the center of the nozzle body.

In addition, it may further include a rotation motor provided inside the body and connected to the nozzle body to rotate the nozzle body.

In addition, the nozzle body is provided so that a nozzle housing having a concave shape is formed on one side thereof, and the second valve may be protruded from the inner surface of the nozzle housing and the end thereof may be located inside the nozzle housing.

In addition, it is coupled to the body to be detachable and further includes an air tank in which compressed air is stored, and the nozzle body further includes a third valve protruding from the inner surface of the nozzle housing and having an end positioned inside the nozzle housing and connected to the air tank, The degree to which the end of the second valve protrudes from the inner surface of the nozzle housing may be greater than that of the third valve.

In addition, the discharge unit may further include an elastic member having watertightness and is provided along the circumference of one side of the nozzle body on which the nozzle housing is formed.

According to an embodiment of the present invention, since a separate hose to which the paint is transferred is not required, the loss rate of the paint is reduced, and there is an advantage in that the operation is easy with a gun shape that the operator can easily grip.

In addition, since it does not require separate power when spraying paint, it is suitable for underwater work and is economical.

In addition, there is an advantage of easy cleaning and reuse.

1 is a perspective view showing a gun type underwater coating spraying device according to an embodiment of the present invention.
2 is a cross-sectional view showing a gun type underwater coating spraying device according to an embodiment of the present invention.
3 and 4 are operational state diagrams showing the operation of the pressure supply unit according to an embodiment of the present invention.
5 is a perspective view showing a discharge unit according to an embodiment of the present invention.
6 is a perspective view showing a discharge unit according to another embodiment of the present invention.
7 is a use state diagram showing a state of use of a discharge unit according to another embodiment of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Since the embodiments according to the concept of the present invention can be modified in various ways and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific form of disclosure, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in this specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the "inclusive" or "gajida" and the terms are staking the features, numbers, steps, operations, elements, parts or geotyiji to be a combination thereof specify the presence, of one or more other features, integers It is to be understood that the possibility of addition or presence of, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

Hereinafter, the present invention will be described in detail.

1 is a perspective view showing a gun type underwater coating spraying device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a gun type underwater coating spraying device according to an embodiment of the present invention.

1 and 2, the gun-type underwater coating spraying device according to an embodiment of the present invention includes a body 100, a paint tank 200 that is detachably coupled to one side of the body 100, and the A discharge unit 500 detachably coupled to the other side of the main body 100 and spaced apart from the paint tank 200, provided inside the main body 100, and the paint in the paint tank 200 is discharged. The paint transfer pipe 400 that connects the paint tank 200 and the discharge unit 500 to be discharged to the outside through the part 500, and is connected to the paint transfer pipe 400 so that the paint is discharged from the paint tank 200. The first valve 410 for controlling the flow rate of the paint moved to the feed pipe 400 and the first valve 410 are provided inside the body 100 and transfer pressure to the first valve 410 Includes a pressure supply unit 300 for opening and closing, and the discharge unit 500 is provided on one side of the nozzle body 510 and the nozzle body 510 connected to the end of the paint transfer pipe 400, and the nozzle body ( It includes a second valve 520 for discharging the paint to the outside while blocking the inflow of external water into the interior of 400).

The paint tank 200 of the present invention is detachably coupled to the body 100 and the paint is filled therein. Although the paint tank 200 is not limited in shape or capacity, it is preferable that the paint tank 200 is not excessively heavy or large in view of the fact that the paint tank 200 and the body 100 are supported in the hand of the operator. .

The main body 100 of the present invention has a gun shape and can be gripped by an operator and has watertightness. It is preferable that a part of the main body 100 has a handle shape for convenience of operation. For example, the main body 100 may include a handle portion 110 and a connection portion 120 extending from the handle portion 110 toward the discharge portion 500. The connection part 120 may form a right angle or an obtuse angle with the handle part 110. In addition, the main body 100 has one side coupled to the paint tank 200, and although there is no limit to the coupling position of the paint tank 200, it is preferable to be coupled to the upper portion of the main body 100 to increase workability. , It is more preferable that the combination of the main body 100 and the paint tank 200 maintain watertightness.

A paint transfer pipe 400 extending in the longitudinal direction is provided inside the main body 100, and an end of the paint transfer pipe 400 is connected to the discharge unit 500. Here, the longitudinal direction of the paint transfer pipe 400 may mean the direction of the discharge unit 500 within the main body 100. For example, the paint transfer pipe 400 may extend in the left and right directions in the drawing. I can.

In an embodiment of the present invention, the paint tank 200 includes a storage unit 210 capable of storing paint, and a discharge port 220 capable of discharging the paint to the outside of the paint tank 200, and the main body 100 It may include an inlet port 130 connectable to the discharge port 220. The inlet port 130 may include an outlet port 131 connected to the paint transfer pipe 400 and an insertion port 132 into which the discharge port 220 is inserted. In this case, the outlet 131 and the insertion port 132 are spaced apart from each other, and a support member 133 is positioned between the outlet 131 and the insertion port 132. The support member 133 may be provided with a through hole 134 so that the paint introduced through the discharge port 220 flows into the inlet port 130 through the insertion hole 132. The through hole 134 may be provided to vertically penetrate the center of the support member 133, and may be plural.

A first valve 410 may be provided between the outlet 131 and the insertion port 132 of the inlet port 130, and the paint transfer pipe 400 and the paint tank 200 may be provided with the first valve 410 ) Can be communicated or blocked. That is, the paint stored in the paint tank 200 may be moved to the paint transfer pipe 400 according to the opening and closing of the first valve 410.

When the first valve 410 is specifically described, the first valve 410 is a valve body 411 that blocks the movement of paint from the paint tank 200 to the paint transfer pipe 400, and the valve body 411 It is connected to and includes a spring 412 having elasticity, and the spring 412 applies a force to the valve body 411 in a downward direction. By the elastic force of the spring 412, the valve body 411 is in contact with the inner wall of the inlet port 130 of the main body 100 to block the movement of the paint, and by the pressure of the pressure supply unit 300 to be described later. As the valve body 411 is spaced apart from the inner wall of the inlet port 130, the paint moves to a space between the inner wall of the inlet port 130 and the valve body 411.

More specifically, the spring 412 is provided below the support member 133, and the support member 133 is fixed to the inlet port 130 to support the spring 412. The valve body 411 has a shape surrounding a part or all of the outside of the spring 412, and the inner wall of the inlet port 130 and the valve body 411 are in contact with each other, and the lower portion of the inlet port 130 Block the provided outlet 131. When the valve body 411 moves in the direction of the support member 133, a gap between the valve body 411 and the inner wall of the inlet port 130 opens, and the outlet port 131 is opened, and the outlet port ( The paint in the paint tank 200 may be moved in the direction of the paint transfer pipe 400 through 131.

The pressure supply unit 300 is provided inside the main body 100, and more preferably, may be provided inside the handle unit 110 that can be gripped by an operator. The pressure supply unit 300 opens and closes the first valve 410 by transferring pressure to the first valve 410.

3 and 4 are operational state diagrams showing the operation of the pressure supply unit 300 according to an embodiment of the present invention.

The compression housing 310, while passing through one side of the compression housing 310, protrudes to the outside of the main body 100 and communicates with the driving member 330 and the compression housing 310 capable of performing a piston movement, and the driving member It may include a pressure transfer pipe 320 for transferring the pressure generated by the piston movement of 330 to the first valve 410.

Specifically, the compression housing 310 is provided in the handle portion 110 of the main body 100, and the pressure transfer pipe 320 communicates with the compression housing 310 and the outlet port from the compression housing 310 It can be extended to (131). The driving member 330 is a moving plate 331 located in the compression housing 310, one end is connected to the moving plate 331 and the other end protrudes outside the handle part 110 of the main body 100. It may include a pressing member 332, and the moving plate 331 is inside the compression housing 310 while performing a piston movement inside the compression housing 310 by an external force applied to the pressing member 332. Pressure can be generated by compressing filled air or a medium. An external force applied to the pressing member 332 may be applied by an operator.

Pressure is generated in the compression housing 310 by the piston motion of the driving member 330, and the pressure is transferred to the first valve 410 through a pressure transfer pipe 320 in communication with the compression housing 310. Is transferred to move the valve body 411 of the first valve 410 in the direction of the support member 133 and increase the distance between the valve body 411 and the inner wall of the inlet port 130 to increase the outlet ( 131) is opened. In the present invention, the degree of opening of the outlet port 131 can be adjusted according to the external force applied to the pressing member 332, and accordingly, the amount of paint flowing from the paint tank 200 to the paint transfer pipe 400 can be easily controlled. Adjustable.

3(a) shows a state in which the first valve is closed, and FIG. 3(b) shows a state in which the first valve is open. For example, the paint transfer pipe 400, the compression housing 310 and When the pressure transfer pipe 320 communicates with each other and moves the moving plate 331 to the rear by pressing the pressing member 332 protruding outward of the main body 100 while the paint is filled, the compression housing As the volume of the internal accommodation space of 310 is reduced, high pressure is generated, and the high pressure separates the first valve 410 from the inner wall of the main body 100 to connect the paint tank 200 and the paint transfer pipe 400. Communicate. In this case, the paint stored in the paint tank 200 may be moved to the paint transfer pipe 400 and at the same time move to the discharge unit 500 by the pressure generated from the compression housing 310.

4(a) shows the first valve in a closed state, and FIG. 4(b) shows the first valve in an open state. For another example, air or a separate fluid is contained in the compression housing 310. The pressure transfer pipe 320 has one side in contact with the air or fluid filled in the compression housing 310 and the other side of the paint transfer pipe 400 or the paint accommodated in the upper portion of the pressure transfer pipe 320. A pressure transmission member 321 may be provided to contact and transmit pressure to the paint. The pressure transfer member 321 blocks an inner side of the pressure transfer pipe 320 and transfers pressure to the upper side while moving in a sliding manner by pressure, or is fixed to one side of the pressure transfer pipe 320 to provide the pressure. While blocking the inside of the transfer pipe 320, a rubber film or the like may be used that changes by pressure and transfers pressure to the upper portion.

In addition, the pressure supply unit 300 may further include a restoring member 340 provided inside the compression housing 310 and applying an elastic force to the driving member 330. The restoring member 340 is connected to the moving plate 331 in the compression housing 310 to apply a restoring force to the moving plate 331. For example, when the operator presses the pressing member 332 protruding outward from the handle part 110, the internal volume of the compression housing is reduced by the piston movement of the moving plate 331, and the pressure is reduced to the first valve 410. After transferring the pressure, when the operator does not apply force to the pressing member 332, the restoration member 340 restores the moving plate 331 to the outer direction of the handle part 110. The restoration member 340 may have a structure such as a spring wound in a coil shape.

In addition to the above-described examples, various structures or configurations for driving the first valve 410 by generating pressure by an operator's manipulation may be used for the pressure supply unit 300.

5 is a perspective view showing a discharge unit 500 according to an embodiment of the present invention.

The discharge part 500 is provided at an end of the paint transfer pipe 400 and discharges the paint moving the paint transfer pipe 400 to the outside of the main body 100.

2 and 5, the discharge unit 500 includes a nozzle body 510 and a second valve 520, and the nozzle body 510 is detachable from one side of the body 100, and the It communicates with the paint transfer pipe 400 and determines the moving direction and the spraying range of the paint transferred to the discharge unit 500 through the paint transfer pipe 400. In addition, the discharge unit 500 may include a connector 550 having one end connected to the nozzle body 510 and the other end connected to the paint transfer pipe 400. The connection pipe 550 has a structure detachable from the main body 100 to communicate the nozzle body 510 and the paint transfer pipe 400 with each other.

Specifically, the nozzle body 510 is provided with a first surface 510a in a cylindrical shape and a second surface 510b arranged to be ocean on the first surface 510a, and the first surface 510a and A space in which the paint is accommodated is formed between the second surfaces 510b. In this case, the connection pipe 550 may be connected to the first surface 510a of the nozzle body 510, and a plurality of injection ports 521 may be provided on the second surface 510b. The second valves 520 are respectively provided at the injection ports 521 to open and close the injection ports 521.

The operation state and structure of the second valve 520 will be described as an example. The second valve 520 is provided on the nozzle body 510 and is opened under a certain pressure condition. That is, in a state in which paint is filled between the first and second surfaces 510a and 510b, the second valve 520 is opened by receiving pressure from the paint transfer pipe 400, and the nozzle body ( 510) to the outside.

For example, the second valve 520 is formed of an elastic material such as rubber that blocks the injection hole 521, and the second valve 520 has a pressure of the paint when the pressure of the paint is higher than a certain value. As a result, a hole having a larger diameter is provided, and when the internal pressure is increased, the diameter of the hole is increased due to elasticity, so that the paint is discharged to the outside of the nozzle body 510 may be applied.

In addition, the second valve 520 may have a structure corresponding to the first valve 410. Specifically, the second valve 520 includes a valve body 411a, a spring 412a, and a support member 133a, and is provided on an inner surface of the second surface 510b to penetrate the inner surface. An inlet 522 may be formed. In this case, a support member 133a is provided on an outer surface of the second surface 510b to support a spring 412a connected to the support member 133a, and the spring 412a is the second surface 50b As an elastic force is applied to the valve body (411a) from the outside of the valve body (411a) to the valve body (411a) blocks the inlet (522), and through the inlet (522) from the paint transfer pipe (400) the valve body ( When pressure is transmitted to 411a, the valve body 411a moves from the inside to the outside of the second surface 510b to open the inlet 522. When the inlet 522 is opened, the paint filled between the first surface 510a and the second surface 510b is sprayed to the outside through the injection hole 521.

The second valve 520 is preferably formed of a structure or material that blocks the inflow of water from the outside. The second valve 520 may be plural, and the plurality of second valves 520 may be disposed radially with respect to the center of the nozzle body 510.

In addition to the above-described example, the second valve 520 may have various structures, and the number or position thereof is not limited.

In an embodiment of the present invention, the discharge unit 500 may further include a brush 540 provided on one side of the nozzle body 510 and contactable with a coating object.

The brush 540 is provided to extend outward from one side of the nozzle body 510, and the paint sprayed through the second valve 520 flows into the brush 540, and the brush 540 is applied to the object. A uniform coating surface can be formed by rubbing the surface of (S). In this case, the brush 540 may have a roller-type structure. In addition, the brush 540 has a certain rigidity, and a method of forming a coated surface by rubbing the paint directly sprayed onto the object S through the second valve 520 using the brush 540 Can be used.

In one embodiment of the present invention, a rotation motor 530 provided inside the main body 100 and connected to the nozzle body 510 to rotate the nozzle body 510 may be further included.

The rotation motor 530 is provided inside the main body 100 and is provided inside the main body 100 and is driven by a battery charged with electric power. In this case, it is preferable that the rotary motor 530 and the battery are blocked from contact with water or paint. The rotation motor 530 is connected to the center of the nozzle body 510 to rotate the entire nozzle body 510 or is connected to one side of the nozzle body 510 to be connected to one side of the nozzle body 510 And the second valve 520 may be rotated. According to an embodiment of the present invention including the rotation motor 530, there is an advantage in that the application surface can be formed more easily by the rotation of the brush 540.

In addition, an LED lamp 210 may be provided on the nozzle body 510, the body 100, or the paint tank 200.

The LED lamp 210 is preferably irradiated with light in the direction of the object to be coated (S), and more preferably, it is provided on one side of the paint tank 200 to charge power and power from a battery that is prevented from contact with water. Is supplied.

Figure 6 is a perspective view showing a discharge unit according to another embodiment of the present invention, Figure 7 is a use state diagram showing a state of use of the discharge unit according to another embodiment of the present invention. 7(a) shows a state in which air is injected into the nozzle housing 511 by using the third valve 512, and FIG. 7(b) shows the paint by using the second valve 520. It indicates the state of spraying.

6 and 7, in another embodiment of the present invention, the nozzle body 510 is provided such that a nozzle housing 511 having a concave shape recessed inward is formed on one side thereof, and the second valve The 520 may protrude from the inner surface of the nozzle housing 511 and an end portion may be located inside the nozzle housing 511. The nozzle housing 511 refers to an internal accommodation space formed by recessing one side of the nozzle body 510 inward, and in this case, one side of the nozzle body 510 contacts the surface of the object S This is to spray paint while preventing the flow of water. One side of the nozzle body 510 may be provided with an elastic member 513 formed of rubber or neoprene having watertightness along the outer periphery, and the elastic member 513 is in contact with the object S The inside of the housing is closed. The elastic member 513 may be provided so as to be inclined in the outer circumferential direction of the nozzle body 510 around one side of the nozzle body 510. That is, on the contact surface between the elastic member 513 and the object S, the outside of the elastic member 513 may have an acute angle, and the inside of the elastic member 513 may have an obtuse angle. In this case, water existing inside the nozzle housing 511 can be easily discharged to the outside due to the inclination of the elastic member 513, while water outside the nozzle housing 511 is difficult to flow into the inside.

In the present invention, it is coupled to the main body 100 so as to be detachable, and further includes an air tank 514 in which compressed air is stored, and the nozzle body 510 protrudes from the inner surface of the nozzle housing 511 and has an end portion of the nozzle The nozzle housing further includes a third valve 512 located inside the housing 511 and connected to the air tank 514, wherein an end of the second valve 520 is greater than an end of the third valve 512 The degree of protrusion from the inner surface of 511 may be greater.

In the present invention provided with the air tank 514, after closing the inside of the nozzle housing 511, the water present in the nozzle housing 511 is discharged to the outside of the nozzle housing 511, and the second valve A method of spraying the paint through 520 may be used.

Specifically, the nozzle housing 511 is closed in a state in which one side of the nozzle body 510 is in contact with the surface of the object S, and the third valve 512 inside the nozzle housing 511 By using, the air stored in the air tank 514 is injected into the nozzle housing 511 to discharge water existing inside the nozzle housing 511 to the outside. The paint stored in the paint tank 200 with the second valve 520 exposed to the air is sprayed into the nozzle housing 511 through the second valve 520. Accordingly, since the paint is sprayed into the air, the loss rate of the paint can be minimized. At this time, the end of the second valve 520 protrudes from the inner surface of the nozzle housing 511 to a greater extent than the end of the third valve 512, thereby preventing the paint from passing through the second valve 520. While preventing contamination of the third valve 512 by spraying, the air injected through the third valve 512 affects the direction and spray range of the paint sprayed through the second valve 520. You can minimize giving.

The inner surface of the nozzle housing 511 may be a curved surface in which a portion where the second valve 520 is positioned has a greater degree of depression than a portion where the third valve 512 is positioned. The curved surface is for more smoothly discharging water present in the nozzle housing 511 to the outside.

A plurality of third valves 512 may be disposed radially around the second valve 520, and the second valve 520 may be located at the center of the nozzle body 100. In addition, ends of the plurality of third valves 512 are positioned to have a predetermined angle, so that air injected through the third valve 512 may form a vortex inside the nozzle housing 511.

As described above, the gun-type underwater coating spraying device according to the present invention is suitable for performing the coating operation underwater, and does not require a separate hose for supplying the paint, reducing the paint loss rate due to the paint stored inside the hose. It is convenient to use in local water coating and has the effect of increasing workability. In addition, there is an advantage of easy cleaning or reuse by simplifying the internal structure.

100: main body 110: handle
120: connection part 130: inlet port
131: outlet 132: insertion port
133,133a: support member 134: through hole
200: paint tank 210: storage
220: discharge port 230: LED lamp
300: pressure supply unit 310: compression housing
320: pressure transfer pipe 321: pressure transfer member
330: driving member 331: moving plate
332: pressing member
340: restoration member
400: paint transfer pipe 410: first valve
411,411a: valve body 412,412a: spring
500: discharge unit 510: nozzle body
510a: side 1 510b: side 2
511: nozzle housing 512: third valve
513: elastic member 514: air tank
520: second valve 521: injection port
522: inlet
530: rotary motor
540: brush 550: connector
S: object

Claims (9)

main body;
A paint tank detachably coupled to one side of the main body;
A discharge unit detachably coupled to the other side of the main body and spaced apart from the paint tank;
A paint transfer pipe provided inside the main body and connecting the paint tank and the discharge unit so that the paint in the paint tank is discharged to the outside through the discharge unit;
A first valve connected to the paint transfer pipe to control a flow rate of paint transferred from the paint tank to the paint transfer pipe; And
Includes; a pressure supply unit provided in the interior of the main body to open and close the first valve by transferring pressure to the first valve,
The discharge unit,
A nozzle body connected to the end of the paint transfer pipe; And
Includes; a second valve provided on one side of the nozzle body and discharging the paint to the outside while blocking the inflow of external water into the nozzle body,
The pressure supply unit,
Compression housing;
A driving member penetrating one side of the compression housing and protruding to the outside of the main body and capable of performing a piston movement; And
A pressure transfer pipe communicating with the compression housing and transferring the pressure generated by the piston movement of the driving member to the first valve; and
The driving member,
A moving plate located in the compression housing; And
One end is connected to the moving plate and the other end includes a pressing member protruding outward of the body,
The moving plate is a gun type underwater coating injection device, characterized in that generating the pressure by compressing the fluid filled in the compression housing by an external force applied to the pressing member.
delete The method of claim 1,
The pressure supply unit,
Further comprising a restoring member provided inside the compression housing and applying an elastic force to the driving member,
The restoring member is connected to the moving plate, and when an external force applied to the pressing member is not applied, the moving plate is restored to the outside of the body.
The method of claim 1,
The discharge unit,
Gun type underwater coating spraying device, characterized in that it is provided on one side of the nozzle body and further comprises a brush capable of contacting the coating object.
The method of claim 1,
The second valve is a gun type underwater coating spraying device, characterized in that the plurality of radially arranged relative to the center of the nozzle body.
The method of claim 1,
Gun-type underwater coating spray device, characterized in that it further comprises a rotation motor provided inside the body and connected to the nozzle body to rotate the nozzle body.
The method of claim 1,
The nozzle body,
It is provided to form a concave nozzle housing on one side,
The second valve,
Gun-type underwater coating spraying device, characterized in that the end is located inside the nozzle housing while protruding from the inner surface of the nozzle housing.
The method of claim 7,
It is coupled to the body to be detachable and further comprises an air tank in which compressed air is stored,
The nozzle body,
Further comprising a third valve protruding from the inner surface of the nozzle housing and having an end positioned inside the nozzle housing and connected to the air tank,
Gun-type underwater coating injection apparatus, characterized in that the degree of protruding from the inner surface of the nozzle housing is greater than the end of the second valve than the end of the third valve.
The method of claim 8,
The discharge unit,
Gun-type underwater coating spraying device, characterized in that it is provided along the circumference of the one side of the nozzle housing is formed of the nozzle body and further comprises an elastic member having watertightness.

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