A paint mist recovery system for ship exterior painting operations

Abstract

This utility model provides a paint mist recovery system for ship exterior painting operations, including a boom, painting equipment, a paint hood, a recovery hood, a recovery box fixed to the boom, a fan and filter consumables installed inside the recovery box, and a recovery pipe. The paint hood covers the outer periphery of the painting equipment, and the recovery hood covers the outer periphery of the paint hood, forming a recovery chamber between them. The recovery box has an air intake and an air outlet connected to the air outlet of the fan. The recovery box has a filter channel connecting the air intake and the air inlet of the fan. The two ends of the recovery pipe are connected to the recovery chamber and the air intake, respectively. The filter consumables are located inside the filter channel. This application uses a non-contact method to recover paint mist and harmful waste such as organic matter generated during the painting operation, and filters it with filter consumables, effectively suppressing paint mist diffusion and reducing VOC emissions, promoting the shipbuilding industry towards a more environmentally friendly and efficient direction.

Description

Technical Field

[0001] This utility model relates to the field of ship exterior painting technology, and in particular to a paint mist recovery system for ship exterior painting operations. Background Technology

[0002] Both shipbuilding and ship repair operations involve a process of painting the ship's exterior to form a paint film that serves to prevent corrosion, prevent dirt, enhance aesthetics, and provide identification.

[0003] Currently, there are two main methods for painting ship exteriors: manual painting and automatic painting. Manual painting refers to workers holding spray guns and performing painting operations from an aerial work platform. This method suffers from drawbacks such as low efficiency, high risk of working at heights, and uneven paint film thickness. Automatic painting refers to the use of automated ship exterior painting equipment. This equipment mainly includes a mobile chassis, a tower fixed to the chassis, a telescopic boom mounted on the tower and capable of being raised and lowered, and painting equipment installed at the front end of the telescopic boom. For example, an automated operation platform for ship painting is disclosed in Chinese invention patent application number 202110573747.6.

[0004] However, both manual and automated spraying processes generate harmful waste such as paint mist and organic matter, polluting the environment. In particular, the paint mist contains highly toxic solvents such as benzene, toluene, and tetraphenylethylene, which can easily damage the central nervous system and hematopoietic system, harming workers' health. Therefore, the VOC emissions from paint spray during existing ship exterior painting operations do not conform to the concept of green and environmentally friendly coating. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a paint mist recovery system for ship exterior spraying operations, which significantly reduces the generation of harmful waste during the spraying process.

[0006] To achieve the above objectives, this utility model provides a paint mist recovery system for ship exterior painting operations, including a boom, a painting device installed at the end of the boom, a paint spray hood and a recovery hood both installed at the end of the boom, a recovery box fixed to the boom, a fan and filter consumables both installed in the recovery box, and a recovery pipe. The paint spray hood covers the outer periphery of the painting device, and the recovery hood covers the outer periphery of the paint spray hood, forming a recovery chamber between the two. The recovery box is provided with an air intake and an air outlet connected to the air outlet of the fan. The recovery box is provided with a filter channel connecting the air intake and the air inlet of the fan. The two ends of the recovery pipe are respectively connected to the recovery chamber and the air intake. The filter consumables are disposed in the filter channel.

[0007] Furthermore, an optional embodiment of the paint mist recovery system is as follows: the filter consumable has a multi-layer structure, the filter consumable includes a paint mist felt and at least one activated carbon layer, and the paint mist felt and at least one activated carbon layer are arranged sequentially along the gas flow direction in the filter channel.

[0008] Furthermore, an optional embodiment of the paint mist recovery system is as follows: the recovery box is equipped with several pull-out consumable installation drawers, and the paint mist felt and at least one layer of activated carbon are each installed in one consumable installation drawer.

[0009] Furthermore, an alternative to the paint mist recovery system is that the air intake is located at the upper end of one side of the recovery box, and the air outlet is located at the lower end of the other side of the recovery box.

[0010] Furthermore, an optional embodiment of the paint mist recovery system is as follows: a first connecting flange is welded and fixed to the bottom of the end of the boom away from the spraying equipment, and a second connecting flange is welded and fixed to the top of the recovery box, with the first connecting flange and the second connecting flange being fixed together by a clamp.

[0011] Furthermore, an optional embodiment of the paint mist recovery system is as follows: the spraying equipment is a spray gun, there are two spray guns arranged horizontally side by side, each of the spray guns is covered with a paint spraying hood, and there is one recovery hood covering the outer periphery of the two paint spraying hoods.

[0012] Furthermore, an optional solution for the paint mist recovery system is as follows: there are two recovery pipes, and two air inlets are provided on the recovery box. One end of each of the two recovery pipes is connected to the two air inlets on the recovery box. Connection holes are provided at the middle of the top and the middle of the bottom of the recovery cover. The other end of each of the two recovery pipes is connected to the two connection holes on the recovery cover. The connection holes communicate with the recovery chamber.

[0013] Furthermore, an optional embodiment of the paint mist recovery system is as follows: the paint mist recovery system further includes a mounting bracket and an adjusting bracket. The mounting bracket is fixed to the end of the boom. The mounting bracket has a horizontally extending adjusting and fixing groove. The adjusting bracket is fixed to the mounting bracket by bolts passing through the adjusting and fixing groove. The spraying equipment, the paint spray hood, and the recovery hood are all fixed to the adjusting bracket.

[0014] Furthermore, an optional embodiment of the paint mist recovery system is as follows: the paint mist recovery system further includes a follower cable rack located on the top of the boom, the boom being a horizontally extendable telescopic boom, the follower cable rack including a first cable guide and a second cable guide, one end of the first cable guide and one end of the second cable guide being hinged together, the other end of the first cable guide and the other end of the second cable guide being respectively hinged to both ends of the telescopic boom, and the recovery pipe being a flexible hose and fixedly mounted on the first cable guide and the second cable guide.

[0015] As described above, the paint mist recovery system for ship exterior painting operations disclosed in this utility model has the following beneficial effects:

[0016] This application employs a non-contact method to recover paint mist and hazardous waste such as organic matter generated during the spraying process. The hazardous waste is collected and sucked into a recovery tank, where it is filtered by filter consumables. This process removes paint mist particles, VOCs, and other hazardous waste, significantly reducing the generation of hazardous waste during the spraying process. It effectively suppresses paint mist diffusion and reduces VOC emissions, making the ship exterior spraying device equipped with this paint mist recovery system conform to the concept of green and environmentally friendly coating, reducing environmental pollution during shipbuilding and repair, and promoting the shipbuilding industry towards a more environmentally friendly and efficient direction. Attached Figure Description

[0017] Figure 1 and Figure 2 These are schematic diagrams of the paint mist recovery system for ship exterior spraying operations from different perspectives, all omitting the recovery pipes mounted on the first and second cable trays.

[0018] Figure 3 This is a schematic diagram of the internal structure of the recycling bin in this utility model.

[0019] Figures 4 to 6 This is a schematic diagram showing the connection between the mounting bracket, adjusting bracket, spraying equipment, paint spray hood, and recovery hood from different perspectives in this utility model. Figure 5 and Figure 6 The recycling tube has been omitted.

[0020] Component designation explanation

[0021] 10 booms

[0022] 11 First connecting flange

[0023] 20 Spraying equipment

[0024] 30 spray paint covers

[0025] 40 Recycling Cover

[0026] 41 Connecting hole

[0027] 50 recycling bins

[0028] 51 Air intake

[0029] 52 Air vent

[0030] 53 Filter Channels

[0031] 54 Consumables Installation Drawer

[0032] 55 Second connecting flange

[0033] 60 blowers

[0034] 70 Filter Consumables

[0035] 71. Paint mist felt

[0036] 72 Activated Carbon Layer

[0037] 80 Recycling Tube

[0038] 90 Recovery Chamber

[0039] 110 Mounting bracket

[0040] 111 Adjusting fixing groove

[0041] 120 Adjustable bracket

[0042] 130 Follower cable rack

[0043] 131 First wire guide frame

[0044] 132 Second cable tray Detailed Implementation

[0045] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0046] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0047] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0048] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0049] This utility model provides a paint mist recovery system for ship exterior painting operations. The paint mist recovery system is configured in an automatic ship exterior painting device. Typically, the ship exterior painting device includes a mobile chassis, a tower fixed to the mobile chassis, a boom 10 mounted on the tower and capable of being raised and lowered, and a painting device 20 mounted at the front end of the boom 10, such as... Figure 1 As shown, boom 10 is a telescopic boom that can extend and retract in the horizontal direction. The spraying equipment 20 is installed at the front end of the telescopic boom, which is the end of the telescopic boom that is close to the exterior of the ship.

[0050] like Figure 1 and Figure 2 As shown, the paint mist recovery system of this utility model includes a boom 10, a spraying device 20, a paint spray hood 30, a recovery hood 40, a recovery box 50, a fan 60, filter consumables 70, and a recovery pipe 80. The spraying device 20, the paint spray hood 30, and the recovery hood 40 are all installed at the front end of the boom 10; Figure 6 As shown, a paint spray hood 30 is installed around the outer periphery of the spraying equipment 20, and a recovery hood 40 is installed around the outer periphery of the paint spray hood 30. Both the paint spray hood 30 and the recovery hood 40 are open-faced masks with their openings facing the exterior of the ship (i.e., both opening forward). The front end of the recovery hood 40 extends forward beyond the front end of the paint spray hood 30, and a recovery chamber 90 is formed between the recovery hood 40 and the paint spray hood 30. A recovery box 50 is fixed to the boom 10, and the recovery box 50 is equipped with an air intake 51 and an air outlet 52. Figures 1 to 3 As shown, the fan 60 and the filter consumable 70 are both installed in the recycling box 50. The air outlet 52 on the recycling box 50 is connected to the air outlet of the fan 60. The recycling box 50 is also equipped with a filter channel 53, which connects the air inlet 51 on the recycling box 50 and the air inlet of the fan 60. The filter consumable 70 is located in the filter channel 53. The two ends of the recycling pipe 80 are connected to the recycling chamber 90 and the air inlet 51, respectively.

[0051] When the ship exterior painting device performs painting operations, the painting equipment 20 is moved to the target area by raising and lowering the boom 10 and extending and retracting the boom 10 horizontally, and then the ship exterior can be painted. During the operation, the paint mist sprayed by the spraying equipment 20 is mostly sprayed onto the exterior of the ship under the action of the spray hood 30. At the same time, the fan 60 in the recovery box 50 is in operation. Under the action of the fan 60, the gas in the recovery box 50 flows from the air inlet 51 to the air outlet 52, and then forms an airflow in the recovery chamber 90 through the recovery pipe 80, thereby drawing the gas in the recovery chamber 90 into the recovery pipe 80. This also draws a small portion of the paint mist and other harmful waste such as organic matter generated during the painting process into the recovery pipe 80. The harmful waste that is drawn in flows from the air inlet 51 to the air outlet 52. The harmful waste passes through the filter material 70 in the filter channel 53 and is filtered by the filter material 70, thereby filtering out paint mist particles, VOCs, etc. in the harmful waste. The gas filtered by the filter material 70 is directly discharged from the air outlet 52 of the recovery box 50.

[0052] Therefore, this application adopts a non-contact method to recover paint mist and harmful waste such as organic matter generated during the spraying process at the end of the spraying operation, and filters them with filter consumable 70, thereby significantly reducing the generation of harmful waste during the spraying operation, effectively reducing paint mist diffusion and VOC emissions during the spraying process, so that the ship exterior spraying device equipped with this paint mist recovery system conforms to the concept of green and environmentally friendly coating, reduces environmental pollution during ship repair and construction, and promotes the development of the shipbuilding industry towards a more environmentally friendly and efficient direction.

[0053] Furthermore, such as Figures 1 to 3 As shown, the air intake 51 and the air outlet 52 are staggered in height and located on different sides of the recycling bin 50. In this embodiment, the air intake 51 is located at the upper rear end of the recycling bin 50, and the air outlet 52 is located at the lower front end of the recycling bin 50. Thus, the gas inside the recycling bin 50 flows from the upper left end to the lower right end.

[0054] Furthermore, such as Figure 3As shown, the filter consumable 70 has a multi-layer structure, including a paint mist felt 71 and at least one activated carbon layer 72. The paint mist felt 71 and the activated carbon layer 72 are arranged sequentially along the gas flow direction within the filter channel 53. In this embodiment, there are two activated carbon layers 72, with the paint mist felt 71 and the two activated carbon layers 72 arranged sequentially from top to bottom. The paint mist felt 71 is used to filter out paint mist particles, and the two activated carbon layers 72 are used to filter out VOCs. Preferably, the recycling bin 50 is provided with three horizontally pull-out consumable installation drawers 54. Each consumable installation drawer 54 has a pull handle fixed to its outer surface, and the paint mist felt 71 and the two activated carbon layers 72 are each installed in one consumable installation drawer 54. Thus, after a period of use, the consumable installation drawers 54 can be pulled out of the recycling bin 50 by pulling out the handles, facilitating the periodic replacement of the paint mist felt 71 or activated carbon layer 72 inside, ensuring the filtration effect. In addition, the consumables installation drawer 54 should have several through holes to allow gas to flow to the fan 60.

[0055] Furthermore, the boom 10 and the recycling bin 50 are preferably fixed using a flange: such as Figure 1 and Figure 2 As shown, a first connecting flange 11 is welded and fixed to the bottom of the rear end of the boom 10 away from the spraying equipment 20, and a second connecting flange 55 is welded and fixed to the top of the recycling bin 50. The first connecting flange 11 and the second connecting flange 55 are fixed together by a clamp, thereby fixing the recycling bin 50 to the bottom of the rear end of the boom 10.

[0056] Furthermore, such as Figure 2 and Figure 6 As shown, the spraying equipment 20 consists of two spray guns arranged horizontally side by side. Each spray gun is covered by a paint hood 30, and there is one recovery hood 40 that covers the outer periphery of both paint hoods 30. Figure 1 and Figure 4 As shown, there are two recovery pipes 80; the recovery box 50 has two suction ports 51, which are arranged horizontally side by side, and one end of each of the two recovery pipes 80 is connected to the two suction ports 51 on the recovery box 50; the recovery cover 40 has connection holes 41 at the middle of the top and the middle of the bottom, and the connection holes 41 communicate with the recovery chamber 90. Thus, the recovery cover 40 has two connection holes 41, and the other end of each of the two recovery pipes 80 is connected to the two connection holes 41 on the recovery cover 40. In this way, the paint mist and other harmful waste such as organic matter generated during the painting process can be recovered more reliably.

[0057] Furthermore, the mounting structure of the spraying equipment 20, the paint spray hood 30, and the recovery hood 40 at the front end of the boom 10 is as follows: Figure 4 and Figure 5As shown, the paint mist recovery system also includes a mounting bracket 110 and an adjusting bracket 120. The mounting bracket 110 is fixed to the front end of the boom 10 by several bolts. The mounting bracket 110 has a horizontally extending adjusting and fixing groove 111. The adjusting bracket 120 is fixed to the mounting bracket 110 by bolts passing through the adjusting and fixing groove 111. The spraying equipment 20, the paint spray hood 30, and the recovery hood 40 are all fixed to the adjusting bracket 120. On the one hand, this achieves the fixed installation of the spraying equipment 20, the paint spray hood 30, and the recovery hood 40 at the front end of the boom 10. On the other hand, the setting of the adjusting and fixing groove 111 on the mounting bracket 110 allows adjustment of the horizontal position of the adjusting bracket 120 in the extending direction of the adjusting and fixing groove 111, that is, adjustment of the installation position in the left and right direction, thereby adjusting the installation position of the spraying equipment 20, the paint spray hood 30, and the recovery hood 40 in the left and right direction, ensuring the painting effect of the spraying equipment 20.

[0058] Furthermore, based on the telescopic boom structure of the boom 10 and the structure in which the recovery bin 50 and the spraying equipment 20 are installed at both ends of the boom 10, the recovery pipe 80 is a flexible hose to avoid interference with the telescopic boom's extension and retraction. Additionally, as... Figure 1 and Figure 2 As shown, the paint mist recovery system also includes a follower cable rack 130 mounted on top of the boom 10. The follower cable rack 130 includes a first cable guide 131 and a second cable guide 132 arranged side-by-side. The rear end of the first cable guide 131 is hinged to the rear end of the telescopic boom, the front end of the first cable guide 131 is hinged to the rear end of the second cable guide 132, and the front end of the second cable guide 132 is hinged to the front end of the telescopic boom. The recovery pipe 80 is fixedly mounted on the first cable guide 131 and the second cable guide 132. Thus, during the forward extension and backward retraction of the telescopic boom, the first cable guide 131 and the second cable guide 132 of the follower cable rack 130 move accordingly, while the recovery pipe 80 is fixedly mounted on the first cable guide 131 and the second cable guide 132. This prevents the recovery pipe 80 from becoming entangled in other components or from becoming tangled itself, ensuring the normal operation of the paint mist recovery system.

[0059] In summary, the paint mist recovery system of this application, during automatic spraying of the ship's exterior coating device, uses a fan 60 to sequentially draw diffused paint mist and generated organic matter and other hazardous waste into the recovery chamber 90, the air intake 51, the filter channel 53, and the fan 60. During this process, the filter consumable 70 filters out paint mist particles and VOCs from the drawn-in gas, and the filtered gas is finally discharged from the air outlet 52. Thus, this application effectively reduces paint mist diffusion and VOC emissions during the spraying process, reduces environmental pollution during shipbuilding and repair, and meets green environmental protection requirements.

[0060] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0061] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A paint mist recovery system for ship exterior painting operations, comprising a boom (10) and a painting device (20) mounted on the end of the boom (10), characterized in that: It also includes a paint spray hood (30) and a recovery hood (40) both installed at the end of the boom (10), a recovery box (50) fixed to the boom (10), a fan (60) and filter consumables (70) both installed in the recovery box (50), and a recovery pipe (80). The paint spray hood (30) covers the outer periphery of the spraying equipment (20), and the recovery hood (40) covers the outer periphery of the paint spray hood (30), with a return loop formed between the two. The collection chamber (90) is provided with an air intake (51) and an air outlet (52) connected to the air outlet of the fan (60). The collection chamber (50) is provided with a filter channel (53) connecting the air intake (51) and the air inlet of the fan (60). The two ends of the collection pipe (80) are respectively connected to the collection chamber (90) and the air intake (51). The filter consumable (70) is located in the filter channel (53).

2. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: The filter consumable (70) has a multi-layer structure. The filter consumable (70) includes a paint mist felt (71) and at least one activated carbon layer (72). The paint mist felt (71) and at least one activated carbon layer (72) are arranged sequentially along the gas flow direction in the filter channel (53).

3. The paint mist recovery system for ship exterior painting operations according to claim 2, characterized in that: The recycling bin (50) is provided with several pull-out consumable installation drawers (54), and the paint mist felt (71) and at least one layer of activated carbon (72) are each installed in one consumable installation drawer (54).

4. The paint mist recovery system for ship exterior painting operations according to claim 1 or 2, characterized in that: The air intake (51) is located at the upper end of one side of the recycling box (50), and the air outlet (52) is located at the lower end of the other side of the recycling box (50).

5. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: The boom (10) is welded to the bottom of the end away from the spraying equipment (20) with a first connecting flange (11) and the recycling bin (50) is welded to the top with a second connecting flange (55). The first connecting flange (11) and the second connecting flange (55) are fixed together by a clamp.

6. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: The spraying equipment (20) is a spray gun. There are two spray guns arranged horizontally side by side. Each spray gun is covered with a paint hood (30). There is one recycling hood (40) which covers the outer periphery of the two paint hoods (30).

7. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: There are two recycling pipes (80), and two air inlets (51) are provided on the recycling box (50). One end of each of the two recycling pipes (80) is connected to the two air inlets (51) on the recycling box (50). There are connection holes (41) at the middle of the top and the middle of the bottom of the recycling cover (40). The other end of each of the two recycling pipes (80) is connected to the two connection holes (41) on the recycling cover (40). The connection holes (41) are connected to the recycling chamber (90).

8. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: It also includes a mounting bracket (110) and an adjusting bracket (120). The mounting bracket (110) is fixed to the end of the boom (10). The mounting bracket (110) has a horizontally extending adjusting and fixing groove (111). The adjusting bracket (120) is fixed to the mounting bracket (110) by bolts passing through the adjusting and fixing groove (111). The spraying equipment (20), the paint spray hood (30), and the recovery hood (40) are all fixed to the adjusting bracket (120).

9. The paint mist recovery system for ship exterior painting operations according to claim 1, characterized in that: It also includes a follower cable rack (130) located on the top of the boom (10). The boom (10) is a telescopic boom that can be extended horizontally. The follower cable rack (130) includes a first cable guide (131) and a second cable guide (132). One end of the first cable guide (131) and one end of the second cable guide (132) are hinged together. The other end of the first cable guide (131) and the other end of the second cable guide (132) are respectively hinged to both ends of the telescopic boom. The recovery pipe (80) is a flexible hose and is fixedly mounted on the first cable guide (131) and the second cable guide (132).

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