KR20070016309A - Device for coating resin powder and container for resin powder - Google Patents

Abstract

The present invention relates to a resin powder coating apparatus and a resin powder container, and more particularly, to a resin powder coating apparatus and a resin powder container capable of spraying resin powder and melting the resin powder and coating the resin powder on the surface of a target object.

A resin powder coating apparatus according to the present invention is a resin powder coating apparatus for coating resin powder on a surface of an object by melting the resin powder while spraying the resin powder. The resin powder coating apparatus is connected to a predetermined oxygen tank, And a blowing passage connected to the oxygen inflow passage so that oxygen flows in and flows out from the oxygen inflow passage and is discharged to the outlet, and the oxygen inflow from the oxygen inflow passage to the blowout passage is opened / closed to open / And a fuel gas inflow path is formed so as to flow and flow the fuel gas from the fuel gas tank, and the oxygen inflow path and the fuel gas inflow path And the oxygen introduced from the oxygen inflow path and the fuel introduced from the fuel gas inflow path A fuel gas passage is formed so as to be flowed through the outlet of the resin powder container and discharged to the outlet of the resin powder container through a flow of oxygen flowing through the outlet pipe, And a plurality of ignition nozzle holes are formed so as to surround the periphery of the air outlet, the air outlet is connected to the outlet of the air outlet, And an ejection head coupled to the body to be connected to the outlet of the fuel gas.

Resin powder, coating

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a resin powder coating apparatus and a resin powder container,

1 is a perspective view showing a resin powder coating apparatus according to an embodiment of the present invention;

2 is an exploded perspective view showing a resin powder coating apparatus according to an embodiment of the present invention.

3 is a cross-sectional view showing a resin powder coating apparatus according to an embodiment of the present invention

4A and 4B are cross-sectional views conceptually showing the operation of the resin powder coating apparatus according to the embodiment of the present invention

5 is a cross-sectional view showing a resin powder container according to an embodiment of the present invention

<Brief Description of Main Drawings>

10 Body

11 oxygen inlet line

With 12 sprays

13 Opening valve

14 Fuel gas inflow furnace

15 with fuel gas

16 powder inlet

20 spout head

21 outlets

22 Ignition nozzle

30 resin powder container

31 vessel

32 diaphragm

33a, 33b upper and lower compartments

34 Blower

The present invention relates to a resin powder coating apparatus and a resin powder container, and more particularly, to a resin powder coating apparatus and a resin powder container capable of spraying resin powder and melting the resin powder and coating the resin powder on the surface of a target object.

In general, metal members, concrete members, and the like are easily corroded by moisture or the like. To prevent this, a method of coating a surface of an object such as a metal member or a concrete member with a corrosion resistant material to improve corrosion resistance is mainly used. Such a coating method includes a liquid coating method and a resin coating method in which a resin in a solid state is melted or a polymer resin in a powder state is heated at a high temperature.

The liquid coating method is advantageous in that it can relatively easily coat the surface of the object, but it is relatively vulnerable to corrosion and has a problem of causing environmental pollution by using a volatile organic solvent. The resin coating method has recently been widely used because it has the advantage of improving the corrosion resistance as compared with the liquid coating method.

The resin coating method is a method in which the resin powder is heated and sprayed so as to adhere to the surface of the object, and the resin is coated on the surface of the object. In order to melt the resin powder and spray it onto the surface of the object as described above, there is a need for a resin powder coating apparatus which is safe and easy to use.

It is an object of the present invention to provide a resin powder coating apparatus capable of spraying a resin powder and melting the resin powder to easily coat the resin powder on a surface of a target object.

In order to achieve the above object, a resin powder coating apparatus according to the present invention is a resin powder coating apparatus for coating a surface of an object by melting resin powder while spraying the resin powder, And an oxygen inflow path is formed in the oxygen inflow path so that oxygen flows from the oxygen inflow path to the oxygen inflow path and flows into the oxygen inflow path, And a fuel gas inflow path is formed so as to allow the fuel gas to flow from the fuel gas tank and connected to a predetermined fuel gas tank, wherein the fuel gas inflow path is formed between the oxygen inflow path and the blowout path, The oxygen inlet line and the fuel gas inlet line are simultaneously connected to the oxygen inlet line and the oxygen inlet line, A fuel gas path is formed so that the fuel gas flowing from the fuel gas inflow path flows and is discharged to the outlet, and connected to a predetermined resin powder container, the resin powder is sucked from the resin powder container by a flow of oxygen flowing through the spray path And a plurality of ignition nozzle holes are formed so as to surround the periphery of the air outlet, and the air outlet is connected to the outlet of the air outlet And an ejection head connected to the body so that the ignition nozzle hole is connected to the outlet of the fuel gas.

Further, in the resin powder coating apparatus according to the present invention, the fuel gas inflow path is provided with an inflow amount control valve capable of controlling the inflow amount of the fuel gas, and an ejection amount control valve capable of controlling the amount of oxygen to be ejected is installed in the ejection path And an oxygen amount regulating valve is provided between the oxygen inflow path and the fuel gas to control an inflow amount of oxygen.

In addition, the resin powder container according to the present invention is characterized by comprising: a cylinder having an airtight space therein; and a diaphragm accommodated in the inside of the cylinder so as to divide the space inside the cylinder into an upper compartment and a lower compartment, And a blower for injecting air into the lower compartment, wherein the powder inflow path is connected to the upper compartment, the resin powder is accommodated in the upper compartment, and the resin powder contained in the upper compartment, The air injected into the lower compartment by the blower is blown into the upper compartment through the clearance of the partition plate and is suspended in the upper compartment to be sucked into the powder inflow path.

Hereinafter, a resin powder coating apparatus and a resin powder container according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view showing a resin powder coating apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a resin powder coating apparatus according to an embodiment of the present invention, FIG. Sectional view showing a resin powder coating apparatus according to an embodiment.

Referring to the drawings, a resin powder coating apparatus for spraying resin powder and melting the resin powder on a surface of an object includes a body 10 and a spray head 20. [

The body 10 is a substantially pistol-shaped member having a passage for sucking and flowing oxygen, fuel gas and resin powder therein. The body 10 includes a gun body 10a to which the spray head 20 is coupled at a front end, A grip portion 10b coupled to a lower portion of the rear end side of the main body portion 10a so as to be gripped by hand and an opening and closing valve 13 for opening and closing the flow of oxygen so that the resin powder is sucked and ejected And a trigger portion 10c hingedly connected to the lower portion of the main body 10a at the front of the handle portion 10b. Oxygen, fuel gas and resin powder are mixed and mixed with each other in the inside of the body 10 and the oxygen inflow passages 11, the ejection passages 12, the fuel gas inflows 14 ), A fuel gas path 15, and a powder inflow path 16 are formed. The body 10 is provided with an on-off valve 13 for opening and closing the inflow of oxygen from the oxygen inflow passage 11 to the jetting passage 12. The grip portion 10a and the grip portion 10b are integrally joined by a coupling bolt 4. [

The oxygen inflow passage 11 is connected to a predetermined oxygen tank through the connection hose 1 and is a passage through which oxygen flows from the oxygen tank. The oxygen inflow passage 11 extends from the lower end of the handle portion 10b to the fuel gas passage 15 formed in the main pipe portion 10b and is connected to the fuel gas passage 15. [ Oxygen introduced into the oxygen inflow path 11 from the oxygen tank flows into the fuel gas path 15 and is mixed with the fuel gas flowing from the fuel gas inflow path 14 into the fuel gas path 15 Is injected into the ignition nozzle orifice (22) of the ejection head (20). An oxygen amount control valve 19 is provided between the oxygen inlet path 11 and the fuel gas path 15 so as to control the flow rate of oxygen. A portion of the oxygen introduced into the oxygen inflow path 11 from the oxygen tank flows into the jet path 12 and is ejected to the jet port 21 when the open / close valve 13 is opened. The resin powder is sucked from the powder inflow path 15 by the flow of oxygen flowing in the inside of the powder inflow path 15 and is ejected at the same time.

The jet path 12 is connected to the oxygen inflow path 11 and flows through the oxygen inflow path to flow into the outlet port 12a. The spray path 12 is connected to the oxygen inflow path 11 at the handle 10b and extends to the outlet 12a formed at the front end of the gun tip 10a. The outlet 12a of the spray path 12 is connected to the spray port 21 of the spray head 20 coupled to the front end of the spray tip 10a. The powder inflow path 16 is provided in the jet path 12 so that resin powder is sucked into the jet path 12 through the powder inflow path 16 by the flow of oxygen flowing in the jet path 12 ). The resin powder is sucked into the jetting path (12) by the Venturi phenomenon. On the other hand, an open / close valve 13 is provided between the oxygen inflow path 11 and the blow out path 12 so as to open and close the inflow of oxygen from the oxygen inflow path 11 to the blow out path 12. The user actuates the on-off valve 13 so that the resin powder is not ejected or ejected. On the other hand, the ejection amount of the resin powder is determined by the velocity of the flow of oxygen flowing through the ejection path (12). Accordingly, on the jetting path 12, a jetting amount control valve 18 is provided so as to control the speed of the oxygen flow jetted to regulate the jetting amount of the resin powder.

The fuel gas inlet passage 14 is connected to a predetermined fuel gas tank through the connection hose 2 and is formed so that the fuel gas flows from the fuel gas tank. The fuel gas inlet passage 14 extends from the lower end of the handle portion 10b to the fuel gas passage 15 formed in the main pipe portion 10b and is connected to the fuel gas passage 15. [ Fuel gas such as acetylene, propane or butane flowing from the fuel gas tank to the fuel gas inflow path 15 flows into the fuel gas path 15 and flows from the oxygen inflow path 11 to the fuel gas 15 And is injected into the ignition nozzle orifice 22 of the ejection head 20. [0053] On the other hand, an inflow amount control valve 17 for controlling the amount of the fuel gas is provided on the fuel gas inflow path 14.

The fuel gas path 15 is connected to the oxygen inflow path 11 and the fuel gas inflow path 14 at the same time so that the oxygen introduced from the oxygen inflow path 11 and the inflow from the fuel gas inflow path 14 Is formed in the inside of the main body portion 11a of the body 10 so that the mixed fuel gas flows and is discharged to the outlet 15a. An outlet 15a of the fuel gas passage 15 is connected to an ignition nozzle opening 23 of the ejection head 20 coupled to the front end of the intake pipe 10a.

The powder inflow passage 16 is connected to a predetermined resin powder container 30 through a connection hose 3 so that resin powder is sucked from the resin powder container 30 by a flow of oxygen flowing through the blowing passage 12, And is connected to the jet path 12 so as to be discharged to the jet path 12. The resin powder is sucked from the powder inflow path 16 into the jet path 12 by a Venturi phenomenon in which a pressure difference is generated according to the flow of oxygen flowing through the jet path 12. [

The opening / closing valve 13 is for opening / closing the inflow of oxygen into the jetting path 12 so as to open / close the jet of resin powder. The on-off valve 13 is provided between the oxygen inflow passage 11 and the jetting passage 12 so as to open and close the inflow of oxygen from the oxygen inflow passage 11 to the jetting passage 12. 4A and 4B are cross-sectional views conceptually showing the operation of a resin powder coating apparatus according to an embodiment of the present invention. Referring to FIG. 1, the opening / closing valve 13 is formed in the front part of the handle 10a and penetrates into the knob part 10a at a position where the jet path 12 and the oxygen inflow path 11 are connected A spindle 132 inserted into a guide hole formed in the center of the spindle guide 131 and reciprocating forward and backward, a spindle guide 131 inserted into a valve mounting hole of the spindle guide 131, And a spring 133 for applying an elastic force to the spindle 132 forward. A guide hole for inserting the spindle 132 is formed at the center of the spindle guide 131 and a flow hole 131a passing through the guide hole and the outside at a position exposed by the spout And an O-ring 132b is interposed between the oxygen inflow passage 11 and the jetting passage 12 to connect the jetting passage 12 and the oxygen inflow passage 11 to each other And inserted into the through-hole formed in the valve. The spindle 132 is inserted into a guide hole formed at the center of the spindle guide 131 so as to be reciprocally movable. The front end of the spindle 132 is exposed to the front of the handle 10a and contacts the trigger 10c and the rear end of the spindle 132 is exposed to the inside of the oxygen inflow path 11. [ A recess 132a is formed between the front end and the rear end of the spindle 132 so as not to contact the guide hole at a position where the flow hole 132a of the spindle guide 131 is positioned. The rear end of the spindle 132 is formed to be larger than the diameter of the guide hole of the spindle guide 131 so that when the front end of the spindle 132 is advanced in the direction of protruding forward of the handle 10a, So that the guide hole is clogged with the entrance of the hole. And an O-ring 132b for sealing is provided at the rear end of the spindle 132 abutting the entrance of the guide hole. The spring 133 is for pressing the spindle 132 in a direction in which the O-ring 132b of the spindle 132 is in close contact with the inlet of the guide hole. One end of the spring 133 is connected to the rear end of the spindle 132 And the other end is supported by the inner wall of the oxygen inflow path 11. [ Since the front end of the spindle 132 is pressed by the spring 133 in a direction in which the front end of the spindle 132 protrudes forward of the handle 10b in a state in which the user does not pull the trigger 10c, The O-ring 132b installed at the rear end of the O-ring 132 closes the inlet of the guide hole, so that the oxygen introduced into the oxygen inflow path 11 is blocked and is not introduced into the jetting path 12. When the user pulls the trigger portion 10c to eject the resin powder, the spindle 132 is moved in a direction in which the rear end portion protrudes into the oxygen inflow path 11, The O-ring 132b installed at the end portion is separated from the inlet of the guide hole so that the oxygen introduced into the oxygen inflow passage 11 is guided through the guide hole to the concave portion of the guide hole and the concave portion of the spindle 132 132a and flows into the jet path 12 through the flow hole 131a.

The ejection head 20 is connected to the front end of the total crown portion 10a of the body 10 and is connected to the oxygen-resin powder mixture which is discharged through the jet path 12 and the fuel gas path 15, Gas mixture to the front. That is, the ejection head 20 is formed with a jet port 21 at the center thereof, a plurality of ignition nozzle holes 22 are formed so as to surround the jet port, and the jet port 21 is formed in the jet path 12, And is connected to the front end of the total crown portion 10a so that the ignition nozzle orifice 22 is connected to the outlet 15b of the fuel gas path 15. [ Referring to the drawings, the jetting head 20 includes a dispensing space 25 for allowing the oxygen-fuel gas mixture to be evenly distributed to the ignition nozzle orifices 22 by the inner cap 24 and the outer cap 23 As shown in FIG. The inner cap 24 is coupled to the front end of the main body 10a by a coupling bolt 5. A hole 24c through which the tubular body forming the jet path 12 is formed is formed at the center of the inner cap 24 and a connection path 24b connected to the fuel gas path 15 is formed around the hole 24c. The contact surface between the inner cap 24 and the cuff portion 10a is sealed with a sealing member 24a. The outer cap 23 is coupled to a front portion of the inner cap 24 so that the oxygen-combustion gas mixture introduced through the connecting passage 24b of the outer cap 24 flows into the plurality of ignition nozzle openings 22 To form a dispensing space 25 for dispensing. The dispensing space 25 is formed by a gap between the front surface of the inner cap 24 and the front surface of the outer cap 23. An outlet port 21 connected to the outlet port 12 is formed in the center of the outer cap 23 and an ignition nozzle port 22 connected to the distribution space 25 is formed around the outlet port 21 . The oxygen-resin powder mixture is injected through the injection port 21 and the oxygen-combustion gas mixture injected through the ignition nozzle 22 is ignited, and the flame surrounding the oxygen-resin powder mixture is injected forward. By the heating of the flame, the resin of the oxygen-resin powder mixture is heated and attached to the surface of the object.

On the other hand, the resin powder flows from the predetermined resin powder container 30 into the powder inflow path 16. However, when the resin powder is piled up, the resin powder is not sucked into the powder inflow path 16 well. Therefore, it is preferable that the resin powder is floated inside the resin powder container 30 so that the resin powder can be sucked well into the powder inflow path 16. To this end, the present invention provides a resin powder container (30) which floats resin powder to be sucked into the powder inflow path (16) well.

5 is a cross-sectional view illustrating a resin powder container according to an embodiment of the present invention.

Referring to the drawings, a resin powder container 30 according to an embodiment of the present invention includes a tubular body 31 having a space sealed therein, and a space inside the tubular body 31 is divided into an upper compartment 33a, And a blower 34 for injecting air into the lower compartment 33b so as to divide the air into the lower compartment 33b so as to have a gap through which the air flows, do. The powder inflow path 16 is connected to the upper compartment 33a through a powder hose 3. The resin powder 6 is accommodated in the upper compartment 33a. The air injected into the lower compartment 33b by the blower 34 in a state where the resin powder 6 is accommodated in the upper compartment 33a passes through the gap of the partition 32, The resin powder 6 housed in the upper compartment 33a is blown into the upper compartment 33a and sucked into the powder inflow path 16. [

The resin powder coating apparatus and the resin powder container according to the present invention have the advantage that the resin powder is sprayed and melted to easily coat the resin powder on the surface of the object.

The resin powder coating apparatus and the resin powder container described above and shown in the drawings are only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

Claims (3)

A resin powder coating apparatus for spraying a resin powder while melting the resin powder to coat the surface of an object, An oxygen inflow path is formed so as to allow oxygen to flow in and flow from the oxygen tank, and a jet path is formed so that oxygen flows from the oxygen inflow path to the oxygen inflow path, And an open / close valve is provided between the oxygen inflow passage and the blowout passage so as to open and close the inflow of oxygen from the oxygen inflow passage to the ejection passage, and is connected to a predetermined fuel gas tank, And the fuel gas introduced into the oxygen inflow path is simultaneously connected to the fuel gas inflow path so that the oxygen introduced from the oxygen inflow path and the fuel gas introduced from the fuel gas inflow path flow, And is connected to a predetermined resin powder container, and flows into the flow of oxygen flowing through the jetting path A body having a powder inflow path connected to the ejection path so that the resin powder is sucked from the resin powder container and ejected to the ejection path; A plurality of ignition nozzle holes are formed so as to surround the air outlet, the air outlet is connected to the outlet of the air outlet and the ignition nozzle is connected to the outlet of the fuel gas, And a combined ejection head. The method according to claim 1, Wherein the fuel gas inflow passage is provided with an inflow amount control valve for controlling the inflow amount of the fuel gas, The jetting passage is provided with a jetting rate control valve capable of controlling the amount of oxygen to be jetted, Wherein an oxygen amount control valve is provided between the oxygen inflow path and the fuel gas to control an inflow amount of oxygen. A resin powder container to which the powder inflow path of the resin powder coating apparatus of claim 1 or 2 is connected, A partition having a space sealed therein and a partition accommodated in the cylinder so as to divide the space inside the cylinder into an upper compartment and a lower compartment and having a gap through which air flows; Wherein the blower comprises: Said powder inflow conduit being connected to said upper compartment, The upper compartment contains a resin powder, The resin powder accommodated in the upper compartment is sucked into the powder inflow path while the air injected into the lower compartment by the blower is blown into the upper compartment through the clearance of the partition and suspended in the upper compartment. Resin powder container.

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