A waste gas treatment device for a coating machine

Abstract

The utility model relates to the coating machine waste gas treatment field, concretely relates to a waste gas treatment device for coating machine, including with the air inlet connection's combustion chamber, the combustion chamber top is connected with the combustion assembly, the combustion chamber one end is connected with the cooling assembly, the cooling assembly is connected with the back temperature pipe away from the combustion chamber one end, the cooling assembly includes the cooling pipe connected between the combustion chamber and the back temperature pipe, the present application is on the existing waste gas combustion's processing, for the water vapor problem carries out better processing and optimization, through the fire lance head of up and down sliding and its outer ring rubber layer forms a piston structure, the dry gas is introduced into the combustion chamber in the form of air extraction, and is extruded downwards quickly, a large amount of moisture produced in the combustion is arranged in the dehydration pipe with lower temperature in the form of downward air blowing, and the cooling pipe with smaller diameter is arranged, under the cooling effect of the condensing column, the content of liquid in the gas is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment for coating machines, and more specifically to an exhaust gas treatment device for coating machines. Background Technology

[0002] Coating machines are mainly used for surface coating processes of films, paper, etc. The process requires long-term drying and heating to achieve the curing effect of colloids or pigments. However, a large amount of waste gas is generated in this process. This waste gas is mainly the coating that enters the circulating heat flow system after being heated, which causes the coating concentration in the drying equipment to increase continuously, affecting both drying and safety. Therefore, the existing technology uses combustion to quickly remove these organic spray coatings. The combustion process mainly produces carbon dioxide and water. Although water turns into water vapor under high temperature, it still affects the overall drying effect when it is recycled back into the drying equipment. Therefore, the biggest challenge in the existing technology is how to deal with the water residue in the circulating gas.

[0003] To address these issues, those skilled in the art have designed an exhaust gas treatment device for coating machines. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide a waste gas treatment device for a coating machine that can remove moisture more efficiently and conveniently.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a combustion chamber connected to an air inlet, a combustion assembly connected to the top of the combustion chamber, a cooling assembly connected to one end of the combustion chamber, a heat recovery pipe connected to the end of the cooling assembly away from the combustion chamber, the cooling assembly including a cooling pipe connected between the combustion chamber and the heat recovery pipe, a drain pipe for discharging condensate generated during combustion connected to one side of the cooling pipe, a heat conduction pipe provided on the outside of the combustion chamber and the heat recovery pipe, and an air outlet connected to the side of the heat recovery pipe away from the cooling pipe.

[0006] Preferably, the combustion assembly includes a slide tube connected to the top of the combustion chamber, a ignition gun head slidably connected to the inner side of the slide tube, a rubber layer connected to the outer side of the ignition gun head, the other end of the rubber layer being fixedly connected to the inner side of the slide tube, air inlets connected to both sides of the slide tube, a connecting rod connected to the top of the ignition gun head, and vibration motors installed on both sides of the connecting rod.

[0007] Preferably, the combustion assembly further includes an outer ring surrounding the outside of the slide tube, the inner ring of the outer ring being connected to the air inlet, the inner ring of the outer ring and the outer ring of the slide tube forming a sealed space containing activated carbon, and a one-way air inlet valve being provided inside the air inlet.

[0008] Preferably, when the vibrating motor drives the connecting rod and the lighter head to move up and down, the rubber layer is repeatedly sucked out and compressed by the lighter head.

[0009] Preferably, the diameter of the cooling pipe is smaller than the diameter of the combustion chamber and the return pipe, the diameters of the combustion chamber and the return pipe are the same, and the heat pipe transfers the temperature of the combustion chamber to the return pipe.

[0010] Preferably, a dehydration pipe is vertically connected to the bottom of the combustion chamber, and the dehydration pipe and the ignition gun head are distributed along the same straight line.

[0011] Preferably, a condensation column is provided at the top of the inner side of the cooling pipe, the condensation column is perpendicular to the inner side of the cooling pipe, and the condensation column and the drain pipe are distributed along the same straight line.

[0012] Preferably, the outer contour of the lighter head and the inner diameter of the slide tube are both pentagonal structures, and an elastic connector is provided between the lighter head and the air inlet.

[0013] The beneficial effects of this utility model are as follows: This application provides better treatment and optimization for water vapor in existing waste gas combustion treatment. A piston structure is formed by the sliding ignition head and its outer rubber layer. The dried gas is introduced into the combustion chamber in the form of suction and is quickly squeezed downwards. The large amount of water generated during combustion is discharged into the dehydration pipe with a lower temperature by blowing air downwards. A cooling pipe with a smaller diameter is also set up. Under the cooling effect of the condenser column, the liquid content in the gas is further reduced. In order to reduce the temperature drop, the outermost heat conduction pipe is used to reheat the cooled gas. Although it cannot raise the temperature to the temperature during combustion, it still reduces the huge heat loss and increases the temperature returned to the coating machine drying equipment, thus avoiding a significant reduction in the drying effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 2 This is the utility model Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a side view of the internal structure of this utility model.

[0018] Figure 4 This is the utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0019] In the picture: 1. Combustion chamber; 101. Dehydration pipe; 2. Cooling assembly; 201. Cooling pipe; 202. Condensation column; 203. Drain pipe; 3. Reheat pipe; 4. Heat conduction pipe; 5. Combustion assembly; 501. Slide tube; 502. Ignition gun head; 503. Rubber layer; 504. Outer ring; 505. Air inlet; 506. Connecting rod; 507. Vibration motor. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: This utility model provides a waste gas treatment device for a coating machine, such as... Figure 1-4As shown, the system includes a combustion chamber 1 connected to an air inlet, a combustion assembly 5 connected to the top of the combustion chamber 1, a cooling assembly 2 connected to one end of the combustion chamber 1, a return pipe 3 connected to the end of the cooling assembly 2 away from the combustion chamber 1, the cooling assembly 2 including a cooling pipe 201 connected between the combustion chamber 1 and the return pipe 3, a drain pipe 203 connected to one side of the cooling pipe 201 for draining condensate generated during combustion, a heat-conducting pipe 4 provided outside the combustion chamber 1 and the return pipe 3, an air outlet connected to the side of the return pipe 3 away from the cooling pipe 201, and a sliding tube 501 connected to the top of the combustion chamber 1, with a lighter head 502 slidably connected to the inner side of the sliding tube 501. A rubber layer 503 is connected to the outside of the lighter head 502. The other end of the rubber layer 503 is fixedly connected to the inside of the slide tube 501. Air inlets 505 are connected to both sides of the slide tube 501. A connecting rod 506 is connected to the top of the lighter head 502. Vibration motors 507 are installed on both sides of the connecting rod 506. The vibration motors 507, through high-frequency vibration and short-distance displacement, push the connecting rod 506 and the lighter head 502 to slide up and down repeatedly. This causes the rubber layer 503 to continuously draw in gas from the air inlet 505 like a piston and then squeeze it downwards to discharge it. This is perpendicular to the direction of the main airflow and helps to discharge the liquid produced by combustion before it vaporizes.

[0025] The combustion assembly 5 also includes an outer ring 504 surrounding the outside of the slide tube 501. The inner ring of the outer ring 504 is connected to the air inlet 505. The inner ring of the outer ring 504 and the outer ring of the slide tube 501 form a sealed space containing activated carbon. A one-way air inlet valve is provided inside the air inlet 505. The activated carbon placed inside the outer ring 504 can filter the incoming gas, reduce the moisture in the incoming gas, and maintain the dryness of the incoming gas. To reduce the impact of high temperature on the activated carbon, a heat insulation layer can be provided at the bottom of the outer ring 504.

[0026] When the vibration motor 507 drives the connecting rod 506 and the ignition head 502 to move up and down, the rubber layer 503 is repeatedly pulled up and down by the ignition head 502 to draw out and compress the gas. Repeated drawing out of the gas can provide more oxygen required for combustion and promote combustion. At the same time, compression can also facilitate the downward flow of gas and separate the liquid from the gas in the main channel.

[0027] The diameter of the cooling tube 201 is smaller than that of the combustion chamber 1 and the return tube 3. The combustion chamber 1 and the return tube 3 have the same diameter. The heat pipe 4 transfers the temperature of the combustion chamber 1 to the return tube 3. The smaller diameter of the cooling tube 201 avoids contact with the heat pipe 4, creating a relatively low temperature environment. At the same time, the heat pipe 4 crosses the middle cooling tube 201 to heat the return tube 3, helping the exhaust gas to heat up quickly.

[0028] A dehydration pipe 101 is vertically connected to the bottom of the combustion chamber 1, and the dehydration pipe 101 and the ignition head 502 are distributed along the same straight line. The ignition head 502 rapidly burns the benzene or alcohol gas inside through combustion. The water vapor produced by combustion can be discharged through the dehydration pipe 101 below, and the efficiency of water vapor discharge is also higher.

[0029] A condenser column 202 is provided on the top of the inner side of the cooling pipe 201. The condenser column 202 is perpendicular to the inner side of the cooling pipe 201, and the condenser column 202 and the drain pipe 203 are distributed along the same straight line. The condenser column 202 rapidly reduces its own temperature through its high thermal conductivity. When the liquid in the hot air comes into contact with the condenser column 202, it will quickly liquefy and slide to the bottom, and finally be discharged outward from the drain pipe 203.

[0030] The outer contour of the lighter head 502 and the inner diameter of the slide tube 501 are both pentagonal structures. An elastic connector is provided between the lighter head 502 and the air inlet 505. The pentagonal structure can prevent the lighter head 502 from rotating during the up and down sliding process, thus avoiding the problem of the pipeline for input combustion gas getting tangled.

[0031] In use, gas is introduced from one end of the combustion chamber 1, and the ignition head 502 in the combustion assembly 5 is turned on to fully combust the introduced gas. Driven by the gas behind, the gas re-enters the cooling pipe 201. When it comes into contact with the condenser column 202, the temperature continuously decreases. The condensate flows along the bottom of the condenser column 202 to the drain pipe 203 to remove the water vapor generated after combustion. Then it is introduced into the return pipe 3 behind, and under the action of the heat conduction pipe 4, the temperature of the gas that has been reduced gradually rises, but it will not rise back to the initial combustion temperature. After the gas is discharged, it flows back to the drying equipment of the coating machine to dry the product again.

[0032] When the combustion assembly 5 is turned on, the outer vibration motor 507 can be turned on simultaneously. The vibration motor 507 drives the connecting rod 506 to move up and down, thereby pushing the ignition head 502 to move up and down. When the rubber layer 503 on the outer ring of the ignition head 502 is pulled upward, the space is briefly expanded, and gas flows in from the air inlet 505. When the rubber layer 503 is pulled downward, the space is briefly compressed. In this way, the oxygen required for combustion is continuously replenished. At the same time, the downward blowing method can also guide the water vapor obtained after combustion and help it to be discharged downward. As the dehydration pipe 101 extends downward and gradually moves away from the high-temperature combustion chamber 1, the steam liquefies and flows downward, so that the combustion steam in the gas is further removed.

[0033] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A waste gas treatment device for a coating machine, characterized in that, It includes a combustion chamber (1) connected to the air inlet, a combustion assembly (5) connected to the top of the combustion chamber (1), a cooling assembly (2) connected to one end of the combustion chamber (1), a heat return pipe (3) connected to the end of the cooling assembly (2) away from the combustion chamber (1), the cooling assembly (2) includes a cooling pipe (201) connected between the combustion chamber (1) and the heat return pipe (3), a drain pipe (203) for draining condensate generated by combustion is connected to one side of the cooling pipe (201), a heat conduction pipe (4) is provided on the outside of the combustion chamber (1) and the heat return pipe (3), and an air outlet is connected to the side of the heat return pipe (3) away from the cooling pipe (201).

2. The exhaust gas treatment device for a coating machine according to claim 1, characterized in that, The combustion assembly (5) includes a slide tube (501) connected to the top of the combustion chamber (1), a lighter head (502) is slidably connected to the inside of the slide tube (501), a rubber layer (503) is connected to the outside of the lighter head (502), the other end of the rubber layer (503) is fixedly connected to the inside of the slide tube (501), air inlets (505) are connected to both sides of the slide tube (501), a connecting rod (506) is connected to the top of the lighter head (502), and a vibration motor (507) is installed on both sides of the connecting rod (506).

3. The exhaust gas treatment device for a coating machine according to claim 2, characterized in that, The combustion assembly (5) also includes an outer ring (504) surrounding the outside of the slide tube (501). The inner ring of the outer ring (504) is connected to the air inlet (505). The inner ring of the outer ring (504) and the outer ring of the slide tube (501) form a sealed space containing activated carbon. A one-way air inlet valve is provided inside the air inlet (505).

4. The waste gas treatment device for a coating machine according to claim 2, characterized in that, When the vibrating motor (507) drives the connecting rod (506) and the ignition gun head (502) to move up and down, the rubber layer (503) is repeatedly sucked and squeezed by the ignition gun head (502).

5. The exhaust gas treatment device for a coating machine according to claim 1, characterized in that, The diameter of the cooling tube (201) is smaller than the diameter of the combustion chamber (1) and the return tube (3). The diameters of the combustion chamber (1) and the return tube (3) are the same. The heat pipe (4) transfers the temperature of the combustion chamber (1) to the return tube (3).

6. The exhaust gas treatment device for a coating machine according to claim 4, characterized in that, The bottom of the combustion chamber (1) is vertically connected to a dehydration pipe (101), and the dehydration pipe (101) and the ignition gun head (502) are distributed along the same straight line.

7. The exhaust gas treatment device for a coating machine according to claim 1, characterized in that, A condenser column (202) is provided on the top of the inner side of the cooling pipe (201). The condenser column (202) is perpendicular to the inner side of the cooling pipe (201), and the condenser column (202) and the drain pipe (203) are distributed along the same straight line.

8. The exhaust gas treatment device for a coating machine according to claim 2, characterized in that, The outer contour of the lighter head (502) and the inner diameter of the slide tube (501) are both pentagonal structures, and an elastic connector is provided between the lighter head (502) and the air inlet (505).

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