Ship planking paint spraying waste gas collection cover environmental protection device

Abstract

The invention discloses a ship planking paint spraying waste gas collecting cover environmental protection device which comprises a main cover body (1), a horn-shaped exhaust inlet (2), a drainage pipe (3) and a gas collecting pipe (4), the main cover body (1) is connected with an operation platform through a U-shaped pipe clamp, the main cover body (1) and a ship planking are close to form a closed waste gas collecting cavity, the horn-shaped exhaust inlet (2) is formed in the main cover body (1), and the drainage pipe (3) is connected with the gas collecting pipe (4). An upper panel, a lower panel and two side panels of the main cover body (1) are respectively provided with two trumpet-shaped exhaust inlets (2), the drainage tube (3) is respectively connected with the trumpet-shaped exhaust inlets (2) and the gas collecting tube (4), and the gas collecting tube (4) is arranged in the main cover body (1); the environmental protection device for the ship outer plate paint spraying waste gas collection cover needs to be used in cooperation with a paint spraying operation platform and a waste gas treatment facility, so that the influence of unorganized emission of the paint spraying waste gas on the surrounding atmospheric environment is avoided, and the environmental protection requirement is met.

Description

Technical Field

[0001] This invention relates to an environmental protection device for collecting exhaust gas from the painting of ship exterior panels. Background Technology

[0002] During ship repair and slipway construction, exterior plating painting is a critical process. Because it's impossible to achieve fully enclosed construction, this process must be carried out in the open. The paint mist and volatile organic compounds (VOCs) generated during painting are emitted without organization, causing not only atmospheric pollution, leading to ozone pollution and secondary PM2.5 pollution, but also health hazards to the respiratory and nervous systems of painting workers. Long-term exposure may lead to chronic diseases. According to requirements, the VOCs content must be greater than or equal to 1%. For products containing 0% VOCs, the process should be carried out in a closed system or a closed space, and the exhaust gas should be discharged to a VOCs exhaust gas collection and treatment system. If a closed system is not possible, local gas collection measures should be taken, and the exhaust gas should be discharged to a VOCs exhaust gas collection and treatment system. The core pain point of the current treatment of exhaust gas from ship exterior painting is the low efficiency of exhaust gas collection. Existing technical solutions have obvious defects. The frame-type collection hood used cannot guarantee the collection of exhaust gas at the edge of the collection hood due to the inlet position, resulting in a large amount of exhaust gas escaping from the gaps at the edge of the collection hood, and the collection effect is poor. Summary of the Invention

[0003] The purpose of this invention is to provide an environmental protection device for collecting exhaust gas from the painting of ship exterior panels, thereby preventing the unorganized emission of exhaust gas from affecting the surrounding atmospheric environment.

[0004] The technical solution adopted by the present invention to achieve the above objectives is: an environmental protection device for collecting exhaust gas from ship outer plate painting, including a main hood (1), a horn-shaped air inlet (2), a diversion pipe (3) and a gas collection pipe (4). The main hood (1) is connected to the working platform through a U-shaped pipe clamp. The main hood (1) is close to the ship outer plate to form a closed exhaust gas collection chamber. The horn-shaped air inlet (2) is installed on the main hood (1). Two horn-shaped air inlets (2) are installed on the upper panel, lower panel and side panels of the main hood (1). The diversion pipe (3) is connected to the horn-shaped air inlet (2) and the gas collection pipe (4) respectively. The gas collection pipe (4) is installed inside the main hood (1).

[0005] The main cover (1) is a 2020mm×1195mm square frame structure.

[0006] The horn-shaped air intake (2) on the upper and lower panels of the main cover (1) is 400mm×100mm.

[0007] The horn-shaped air intakes (2) on both sides of the main cover (1) are 200mm×100mm.

[0008] The gas collecting pipe 4 has eight gas collecting and converging holes from top to bottom.

[0009] This invention relates to an environmental protection device for collecting exhaust gas from ship exterior painting. It needs to be used in conjunction with a painting operation platform and exhaust gas treatment facilities to avoid the impact of fugitive emissions of painting exhaust gas on the surrounding atmospheric environment and meet environmental protection requirements. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of an environmental protection device for collecting exhaust gas from ship exterior painting, according to the present invention.

[0011] Figure 2 This is a schematic diagram of the usage status of an environmental protection device for collecting exhaust gas from ship exterior painting, according to the present invention.

[0012] Figure 3 This is a schematic diagram of the horn-shaped air intake of an environmental protection device for collecting exhaust gas from ship exterior painting, according to the present invention. Detailed Implementation

[0013] like Figures 1 to 3As shown, the ship's outer plating paint exhaust gas collection hood environmental protection device includes a main hood body 1, a trumpet-shaped air inlet 2, a diversion pipe 3, and a gas collection pipe 4. The main hood body 1 is a 2020mm×1195mm U-shaped frame structure. The main hood body 1 is connected to the working platform via U-shaped pipe clamps. The main hood body 1 is close to the ship's outer plating to form a closed exhaust gas collection chamber. The trumpet-shaped air inlets 2 are installed on the main hood body 1. Two 400mm×100mm trumpet-shaped air inlets 2 are installed on the upper and lower panels of the main hood body 1, and two 200mm×100mm trumpet-shaped air inlets 2 are installed on each of the side panels of the main hood body 1. Air inlet 2 and drain pipe 3 are respectively connected to the horn-shaped air intake 2 and the air collection pipe 4. The air collection pipe 4 is installed inside the main hood 1. The drain pipe 3 is a φ50mm flexible hose, and the air collection pipe 4 is a φ140mm pipe fitting. A total of 8 φ50mm air collection and convergence holes are set from top to bottom. During installation, the φ50mm drain pipe 3 is used to connect the 8 horn-shaped air intakes 2 nested in the four panels of the main hood 1 to the eight air collection and convergence holes of the air collection pipe 4 inside the hood. Then, U-shaped pipe clamps are used to connect and fix the back plate structure of the main hood 1 to the structure of the working platform 5, so that the opening surface of the main hood 1 is close to the outer plate of the ship to form a nearly closed exhaust gas collection chamber. During construction... The exhaust port of the gas collection pipe 4 is connected to the air inlet of the external waste gas treatment facility 6 via a frame-type suction sleeve. Turning on the facility's fan generates suction at the trumpet-shaped suction port 2, creating negative pressure in the waste gas collection chamber formed by the opening of the main hood 1 and the ship's outer plating. This draws the paint spraying waste gas into the eight trumpet-shaped suction ports, and the waste gas collected at each port is then channeled through the diversion pipe 3 to the gas collection pipe 4. The waste gas is then transported to the treatment facility via the frame-type suction sleeve, thus collecting and treating the paint spraying waste gas from the ship's outer plating to meet emission standards before being discharged into the external environment. Construction personnel transport the collection hood to the work area and use U-shaped pipe clamps to secure the collection hood. The hood is connected to the work platform, and the angle of the hood facing the ship's outer plate is adjusted so that the opening of the main hood is close to the ship's outer plate to form a nearly closed exhaust gas collection chamber. Personnel stand on the work platform and spray paint through the work port on the back of the hood. The exhaust collection pipe is connected to the air intake of the external exhaust gas treatment facility's fan using a diversion pipe. After the external exhaust gas treatment facility is started, air is drawn in through the eight trumpet-shaped air intakes nested in the panels around the main hood frame, creating negative pressure inside and around the edge of the hood, thereby achieving effective collection of exhaust gas. The collected exhaust gas is gathered in the air collection pipe and then introduced into the external treatment facility through the diversion pipe for treatment before being discharged in compliance with standards.

Claims

1. An environmental protection device for collecting exhaust gas from ship exterior plating painting, characterized in that: It includes a main hood (1), a horn-shaped air inlet (2), a diversion pipe (3), and a gas collection pipe (4). The main hood (1) is connected to the working platform through a U-shaped pipe clamp. The main hood (1) is close to the outer plate of the ship to form a closed exhaust gas collection chamber. The horn-shaped air inlet (2) is installed on the main hood (1). Two horn-shaped air inlets (2) are installed on the upper panel, lower panel, and side panels of the main hood (1). The diversion pipe (3) is connected to the horn-shaped air inlet (2) and the gas collection pipe (4) respectively. The gas collection pipe (4) is installed inside the main hood (1).

2. The environmental protection device for collecting exhaust gas from ship exterior plating painting as described in claim 1, characterized in that: The main cover (1) is a 2020mm×1195mm square frame structure.

3. The environmental protection device for collecting exhaust gas from ship exterior plating painting as described in claim 1, characterized in that: The horn-shaped air intake (2) on the upper and lower panels of the main cover (1) is 400mm×100mm.

4. The environmental protection device for collecting exhaust gas from ship exterior plating painting as described in claim 1, characterized in that: The horn-shaped air intakes (2) on both sides of the main cover (1) are 200mm×100mm.

5. The environmental protection device for collecting exhaust gas from ship exterior plating painting as described in claim 1, characterized in that: The gas collecting pipe 4 has eight gas collecting and converging holes from top to bottom.

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