Shutter for oil mist box of ship

Abstract

The invention relates to the technical field of ship equipment, and discloses a louver for a ship oil mist box, which comprises a frame and a plurality of louver blades arranged in the frame at intervals in the vertical direction; each louver blade comprises a blade body and a filter element, the blade bodies are obliquely arranged in the frame, when the louver is installed, the end, facing the interior of the oil mist box, of the louver is defined as the inner end, the other end of the louver is defined as the outer end, the outer ends of the blade bodies are lower than the inner ends of the blade bodies, and the filter elements are arranged at the inner ends of the blade bodies and located between every two adjacent louver blades in the vertical direction. And the filter element of the lower louver blade is in contact with the blade body of the upper louver blade. The filter element and the blade body form a relatively sealed structure in the vertical direction, the inner end and the outer end of the shutter can be completely isolated, the filter element plays a role in efficient filtering, a small amount of oil drops passing through the filter element are blocked by the obliquely-arranged blade body, oil and gas discharge is further reduced, oil and gas escape is reduced, and a good oil and gas separation effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ship equipment, in particular to a shutter used for a ship oil mist box. Background Art

[0002] The oil mist box is a cabinet arranged inside or independent of the hull structure. It is a place where most of the oil tank ventilation in the engine room and the crankcase ventilation of the main and auxiliary engines are concentrated, and a large amount of oil and gas are collected. Shutters are usually set on the interface between the oil mist box and the outside atmosphere. The function of the shutter is to allow the oil mist box to exhaust to the outside while having the oil and gas separation function, preventing the oil mist and oil molecules in the exhaust from being discharged into the outside atmosphere, and preventing external rain from entering the oil mist box.

[0003] If the oil-gas separation ability of the shutters is poor or fails, the oil mist in the oil mist box will escape during the navigation of the ship, and gradually condense on the outer edge of the shutters or on the adjacent hull structure, and then flow along the outer wall of the hull to the deck, forming large black stains on the outer wall of the hull, which greatly affects the appearance. At the same time, the dirty oil flowing onto the deck will flow into the ocean through the deck drainage pipes, causing seawater pollution, which is very unfavorable for PSC inspections and may result in ship fines, detention or even detention.

[0004] Existing shutters mainly use the blocking effect of their blades to separate oil mist from oil and gas, including using inclined straight blades, herringbone blades, changing the blade arrangement to form a circuitous flow channel, adding orifice plates, etc., so that the oil mist collides with the blades to achieve oil and gas separation. For example, the patent with the authorization announcement number CN213942462U discloses a shutter used in a ship smoke box, the shutter body is composed of a shutter frame and shutter blades, the shutter blades are embedded in the shutter frame, the shutter frame passes through the bulkhead and is inserted into the oil mist box, the mesh pressure plate presses the periphery of the mesh and is fixed on the shutter frame end face flange of the shutter frame, so that the mesh is located in the oil mist box, and there is a gap between the shutter blades and the mesh, forming a hollow cavity as a buffer space for oil and gas, and at the same time, the bottom of the shutter frame outside the oil mist box is connected to an oil pan; the mesh pressure plate and the shutter frame end face flange are detachably connected.

[0005] The above-mentioned shutters are connected to the oil pan at the bottom, and the oil and gas flow back into the oil mist box to prevent oil and gas leakage. However, the above-mentioned shutters can often only block and separate oil droplets with a certain diameter or above in the oil mist, and there is a large temperature difference between the gas in the oil mist box and the outside atmosphere. In the oil mist box with a higher temperature, the oil exists in the form of liquid oil droplets (oil mist) as well as a large amount of gaseous molecules. Since the blades of the shutters can only block liquid oil droplets, the gaseous oil molecules will be discharged into the atmosphere with the exhaust gas. At this time, the temperature drops sharply, and the gaseous molecules condense into liquid oil droplets, and then fall on the nearby hull structure in the form of oil mist, resulting in limited oil mist separation effect, and a large amount of oil and gas escape from time to time. Summary of the invention

[0006] The purpose of the present invention is to provide a shutter for a ship oil mist box to solve the problem that the shutter in the prior art has limited effect on separating gaseous oil molecules and causes oil and gas to escape.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a shutter for a ship oil mist box, comprising a frame and louvers arranged in the frame, wherein a plurality of louvers are arranged at intervals in the vertical direction; each of the louvers comprises a blade body and a filter element, and the blade body is obliquely arranged in the frame, and it is defined that the end of the shutter facing the oil mist box when installed is defined as the inner end, and the other end is defined as the outer end, the outer end of the blade body is lower than the inner end of the blade body, and the filter element is arranged at the inner end of the blade body, and of the two adjacent louvers in the vertical direction, the filter element of the louver located at the lower side contacts the blade body of the louver located at the upper side.

[0008] Preferably, the blade body includes a planar portion and a groove-shaped portion fixedly connected to the planar portion, the outer end of the planar portion is lower than the inner end of the planar portion, the groove-shaped portion is located at the inner end of the planar portion, the groove-shaped portion is provided with a U-shaped groove, the filter element is embedded in the U-shaped groove, and the filter element of the louver located below contacts the groove-shaped portion of the blade body located above.

[0009] Preferably, the groove-shaped portion includes a bottom edge, a first side edge and a second side edge, the first side edge, the second side edge and the bottom edge form the U-shaped groove, the bottom edge is vertically fixedly connected to the planar portion, the first side edge is located on the lower side of the second side edge, and drainage holes are also provided on the bottom edge and the first side edge, the drainage holes are connected to the U-shaped groove, and the louver filter element located below is in contact with the bottom edge of the groove-shaped portion located above.

[0010] Preferably, the height of the first side is greater than the height of the second side.

[0011] Preferably, the blade body further includes a folded edge, the folded edge is provided at an outer end of the planar portion, and the folded edge extends in a vertical direction.

[0012] Preferably, the shutter also includes an oil collecting trough, which is arranged at the bottom of the frame. The oil collecting trough includes a guide plate and an oil baffle welded and fixed to the guide plate. The guide plate is used to be welded and fixed to the hull wall plate, and the inner end height of the guide plate is lower than the outer end height.

[0013] Preferably, the shutter further comprises a fireproof and insect-proof net, and there are two fireproof and insect-proof nets, which are respectively fixedly mounted on the inner and outer ends of the frame, and the shutter blade is arranged between the two fireproof and insect-proof nets.

[0014] Preferably, the shutter also includes a seat plate and a flange plate, the seat plate is used to be welded and fixed on the hull wall plate, the flange plate is welded and fixed to the frame, the flange plate and the seat plate are fixedly connected by bolts, and a sealing gasket is also provided between the seat plate and the flange plate.

[0015] Compared with the prior art, the shutter for a ship oil mist box in an embodiment of the present invention has the following beneficial effects: the shutter is formed by a blade body and a filter element, and the filter element and the blade body of two adjacent shutter blades are in contact in the vertical direction, the filter element and the blade body form a relatively sealed structure in the vertical direction, which can completely isolate the inner and outer ends of the shutter, and the gaseous oil molecules and liquid oil droplets in the oil mist box are first passed through the filter element when discharged from the inside to the outside, and the filter element plays a high-efficiency filtering role, filtering and collecting the oil and gas molecules and liquid oil droplets, and a small amount of oil droplets passing through the filter element are blocked by the inclined blade body, which further reduces the discharge of oil and gas, reduces the escape of oil and gas, and achieves a good oil and pollution separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a shutter for a ship oil mist box of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the shutter for the ship's oil mist box;

[0018] Figure 3 yes Figure 1 The front view of the shutter for the oil mist box of a ship omitting the seat plate;

[0019] Figure 4 yes Figure 1 A schematic diagram of the overall structure of the shutter frame, flange plate and shutter blades after welding for the ship oil mist box;

[0020] Figure 5 yes Figure 1A schematic diagram of the structure of the shutter blades of the shutter for the ship oil mist box;

[0021] Figure 6 yes Figure 1 A schematic structural diagram of a seat plate of a shutter for a ship oil mist box;

[0022] Figure 7 yes Figure 1 Schematic diagram of the structure of the shutter for the ship oil mist box after being assembled to the oil mist box.

[0023] In the figure, 1, frame, 2, louver, 21, blade body, 211, plane part, 212, groove part, 2121, bottom edge, 2122, first side edge, 2123, second side edge, 2124, U-shaped groove, 2125, drainage hole, 213, folded edge, 22, filter element, 3, oil collecting trough, 31, guide plate, 32, oil baffle plate, 4, fireproof and insect-proof net, 5, seat plate, 6, flange plate, 7, sealing gasket, 8, fixing ear plate, 9, hull wall plate, 91, oil leakage hole. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] A preferred embodiment of a shutter for a ship oil mist box of the present invention is as follows Figures 1 to 7 As shown, the shutter for the ship oil mist box includes a frame 1 and a shutter blade 2, the frame 1 is used to be fixed on the hull and the oil mist box, the shutter blade 2 is arranged in the frame 1, and the shutter blade 2 is used to block and separate oil gas molecules and liquid oil droplets. In this embodiment, the frame 1 is made of a steel plate with a thickness of 8mm, and the bottom edge 2121 of the frame 1 is an inclined structure with the inner end lower than the outer end, so that the oil droplets dripping on the frame 1 flow back to the oil mist box under the action of gravity.

[0026] A plurality of louvers 2 are arranged at intervals in the vertical direction, and the orthographic projections of the louvers 2 in the horizontal direction have overlapping parts to completely block the space in the frame 1. In this embodiment, the louvers 2 are made of stainless steel with a thickness of 2 mm, and the structures of the louvers 2 are the same. Here, only one louver is used as an example for structural description.

[0027] The louver 2 includes a louver body 21 and a filter element 22, and the louver body 21 is tilted in the frame 1. When the louver is installed, one end facing the oil mist box is defined as the inner end, and the other end is defined as the outer end, that is, the inner end is close to the center of the hull, and the outer end faces the outside of the ship. The outer end of the louver body 21 is lower than the inner end of the louver body 21, so that the louver body 21 has a structure with the outer end tilted downward. The tilted setting can increase the projection area of ​​the louver body 21 in the horizontal direction, and assist in blocking and separating oil and gas molecules and liquid oil droplets.

[0028] The filter element 22 is arranged at the inner end of the blade body 21, and is used to filter and collect oil and gas molecules. The material of the filter element 22 is a porous nanocomposite material, which is composed of several long strips of porous nanocomposite materials. The interior of the material is a mesh porous structure, which has the characteristics of low density, high porosity, hydrophobicity, lipophilicity, etc. When oil mist droplets or oil and gas molecules pass through, it can play a high-efficiency filtering role. At the same time, due to its large internal pores, when the oil droplets gather inside, they will flow downward due to the action of gravity, thereby playing a role in filtering and collecting oil.

[0029] In two adjacent louvers 2 in the vertical direction, the filter element 22 of the lower louver 2 contacts the blade body 21 of the upper louver 2, thereby ensuring that the filter element 22 and the blade body 21 cooperate to form a relatively sealed structure in the vertical direction, achieving the purpose of completely blocking the free flow of air in the oil mist box and the outside air. When the oil and gas molecules and liquid oil droplets escape to the outside, they must first contact the filter element 22 or the blade body 21, thereby improving the effect of oil and gas separation. In this embodiment, the height dimension of the filter element 22 is consistent with the spacing between the two adjacent louvers 2, thereby ensuring that the filter element 22 contacts the blade body 21 of the adjacent louver 2.

[0030] The louver blades 2 of the louver for the ship oil mist box are formed by a blade body 21 and a filter element 22, and the filter elements 22 and the blade bodies 21 of two adjacent louver blades 2 are in contact in the vertical direction. The filter element 22 and the blade body 21 form a relatively sealed structure in the vertical direction, which can completely isolate the inner and outer ends of the louver. When the gaseous oil and gas molecules and liquid oil droplets in the oil mist box are discharged from the inside to the outside, they first pass through the filter element 22. The filter element 22 plays a high-efficiency filtering role, filtering and collecting the oil and gas molecules and liquid oil droplets. A small amount of oil droplets passing through the filter element 22 are blocked by the inclined blade body 21, which further reduces the discharge of oil and gas, reduces the escape of oil and gas, and achieves a good oil and pollution separation effect.

[0031] Preferably, the blade body 21 includes a planar portion 211 and a groove-shaped portion 212 fixedly connected to the planar portion 211, the outer end of the planar portion 211 is lower than the inner end of the planar portion 211, the groove-shaped portion 212 is located at the inner end of the planar portion 211, the groove-shaped portion 212 is provided with a U-shaped groove 2124, the filter element 22 is embedded in the U-shaped groove 2124, and the filter element 22 of the louver 2 located below contacts the groove-shaped portion 212 of the blade body 21 located above.

[0032] like Figure 2 and Figure 5 As shown, the blade body 21 is formed by a plane portion 211 and a groove portion 212. The plane portion 211 is the main structure of the blade body 21 for blocking and separating oil gas molecules and liquid oil droplets. The outer end of the plane portion 211 is lower than the inner end of the plane portion 211, so that the plane portion 211 is inclined to increase its contact area with the oil. In this embodiment, the inclination angle of the plane portion 211 of the blade body 21 is 45 degrees, that is, the plane portion 211 is at an angle of 45 degrees with the horizontal direction, so that the projection area of ​​the plane portion 211 along the horizontal direction is the largest.

[0033] A U-shaped groove 2124 is provided on the groove portion 212, and the U-shaped groove 2124 plays a role in fixing and limiting the filter element 22, thereby simplifying the assembly form of the filter element 22 and the blade body 21. After the filter element 22 is assembled in the U-shaped groove 2124, the top of the filter element 22 contacts the groove portion 212 of the upper-level shutter blade 2, thereby ensuring that there is no gap between the filter element 22 and the blade body 21, thereby preventing the air in the oil mist box from flowing freely with the outside air.

[0034] Preferably, the groove-shaped portion 212 includes a bottom edge 2121, a first side edge 2122 and a second side edge 2123. The first side edge 2122, the second side edge 2123 and the bottom edge 2121 form a U-shaped groove 2124. The bottom edge 2121 is vertically fixedly connected to the planar portion 211. The first side edge 2122 is located on the lower side of the second side edge 2123. Drainage holes 2125 are also provided on the bottom edge 2121 and the first side edge 2122. The drainage holes 2125 are connected to the U-shaped groove 2124. The louver 2 filter element 22 located below is in contact with the bottom edge 2121 of the groove-shaped portion 212 located above.

[0035] like Figure 5 As shown, the first side 2122 and the second side 2123 are both perpendicular to the bottom edge 2121, thereby forming a U-shaped groove 2124. Since the plane portion 211 is tilted, after the bottom edge 2121 is vertically fixed to the plane portion 211, the bottom edge 2121 is also tilted, so that the two ends of the bottom edge 2121 have a height difference, the first side 2122 is located at the end with a lower height of the bottom edge 2121, and the second side 2123 is located at the end with a higher height of the bottom edge 2121, so that the first side 2122 is located at the lower side of the second side 2123.

[0036] The bottom edge 2121 and the first side edge 2122 are both provided with drainage holes 2125, which are located at the position where the bottom edge 2121 and the first side edge 2122 are connected to each other, which is the lowest point of the groove-shaped portion 212, and the drainage holes 2125 are connected to the U-shaped groove 2124, so that the oil collected by the filter element 22 is discharged through the drainage holes 2125 and flows downward along the plane portion 211 of the blade body 21. In this embodiment, the drainage holes 2125 are circular holes with a diameter of 3 mm.

[0037] Preferably, the height of the first side 2122 is greater than the height of the second side 2123 .

[0038] The first side edge 2122 is located at the lower end of the bottom edge 2121 . Increasing the height of the first side edge 2122 can increase the stability of the filter element 22 when embedded in the U-shaped groove 2124 .

[0039] Preferably, the blade body 21 further includes a folded edge 213 , which is disposed at an outer end of the plane portion 211 and extends in a vertical direction.

[0040] The outer end of the plane portion 211 is provided with a folded edge 213 extending in the vertical direction, and the folded edge 213 can drain the oil droplets collected on the plane portion 211, so that the oil droplets drip downward along this side and flow back into the oil mist box.

[0041] Preferably, the shutter also includes an oil collecting trough 3, which is arranged at the bottom of the frame 1. The oil collecting trough 3 includes a guide plate 31 and an oil baffle 32 welded and fixed to the guide plate 31. The guide plate 31 is used to be welded and fixed to the hull wall plate 9, and the inner end height of the guide plate 31 is lower than the outer end height.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the oil collecting tank 3 is an independent structure relative to the frame 1, which is arranged at the bottom of the frame 1, and the distance from the lower edge of the frame 1 is 100mm. When a small amount of oil and gas molecules are discharged from the shutter and liquefied into oil droplets, the oil droplets flow downward and accumulate in the oil collecting tank 3, avoiding flowing downward along the hull wall plate 9, further eliminating the impact of incomplete separation.

[0043] The oil collecting tank 3 is formed by a guide plate 31 and an oil baffle plate 32. The guide plate 31 and the oil baffle plate 32 are L-shaped structures, and the two ends of the oil collecting tank 3 in the length direction are closed structures. In this embodiment, the guide plate 31 and the oil baffle plate 32 are L-shaped steel with an integrated structure, and the size of the L-shaped steel is L125x80x8. The inner end height of the guide plate 31 is lower than the outer end height. The guide plate 31 is an inclined structure, and the accumulated oil droplets can flow along the guide plate 31 toward the hull wall plate 9. In this embodiment, the inclination angle of the guide plate 31 is 5 degrees. Several oil leakage holes 91 are opened on the hull wall plate 9 near the guide plate 31 of the oil collecting tank 3. The oil leakage holes 91 are connected to the oil mist box so that the oil droplets in the oil collecting tank 3 can flow back to the oil mist box.

[0044] Preferably, the shutter further comprises a fireproof and insect-proof net 4 , and there are two fireproof and insect-proof nets 4 , which are respectively fixedly mounted on the inner and outer ends of the frame 1 , and the shutter blade 2 is arranged between the two fireproof and insect-proof nets 4 .

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, fireproof and insect-proof nets 4 are arranged at both ends of the frame 1, and two fireproof and insect-proof nets 4 are installed on both sides of the inlet and outlet of the frame 1 to prevent the entry of foreign objects. In this embodiment, the fireproof and insect-proof nets 4 are stacked together by a layer of 8 mesh / inch stainless steel wire woven net and a layer of 2 mesh / inch brass wire woven net, and are surrounded by a stainless steel plate annular edging with a width of 20mm and a thickness of 0.5mm. The function of the stainless steel wire mesh is to prevent the entry of flying insects and debris, and the function of the brass wire mesh is to achieve a certain fireproof effect by blocking flames and rapid heat conduction.

[0046] In this embodiment, several fixed ear plates 8 are welded and fixed at both inner and outer ends of the frame 1. The fixed ear plates 8 are squares with a size of 25 mm and a thickness of 3 mm. The material of the fixed ear plates 8 is Q235B steel plate. A screw hole with a diameter of 4.2 mm is drilled in the center of each fixed ear plate 8 for fixing two fireproof and insect-proof nets 4.

[0047] Preferably, the shutter also includes a seat plate 5 and a flange plate 6, the seat plate 5 is used to be welded and fixed on the hull wall plate 9, the flange plate 6 is welded and fixed to the frame 1, the flange plate 6 and the seat plate 5 are fixedly connected by bolts, and a sealing gasket 7 is also provided between the seat plate 5 and the flange plate 6.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the seat plate 5 is welded and fixed to the hull wall plate 9, so as to bear the weight of the entire device of the flange plate 6, the frame 1 and the louver 2. The flange plate 6 is welded and fixed to the frame 1, so that the flange plate 6, the frame 1 and the louver 2 form a whole, and are fastened to the seat plate 5 by bolts. During the use of the ship, the integral structure formed by the flange plate 6, the frame 1 and the louver 2 can be easily disassembled by disassembling and assembling the bolts, and the filter element 22 can be replaced. A sealing gasket 7 is arranged between the seat plate 5 and the flange plate 6, and the sealing gasket 7 can ensure the sealing between the flange plate 6 and the seat plate 5, so that when the gas in the oil mist box is discharged, it must pass through the filter element 22 and the blade body 21 of the louver 2, and will not pass through the gap between the seat plate 5 and the flange plate 6, so as to play the filtering and separation role of the louver 2.

[0049] In this embodiment, the seat plate 5 is welded by four Q235B steel plates with a width of 40 mm and a thickness of 20 mm. Its internal size is 30 mm larger than the frame 1, so that the frame 1 can be inserted into the seat plate 5 during installation. The seat plate 5 has a circle of M12 screw holes on the top, and the depth is 2 mm less than the thickness of the seat plate 5, that is, 20-2=18 mm, which can ensure that the bolts have sufficient installation depth but do not protrude from the back of the seat plate 5. The spacing of the screw holes should be evenly distributed according to the length of the side where they are located, preferably not less than 100 mm and not more than 150 mm.

[0050] When the seat plate 5 is manufactured, its four sides are required to be in the same plane, the flatness error shall not exceed 1mm, and the screw hole position accuracy error shall not exceed 2mm. After the manufacture is completed, the outer surface of the seat plate 5 shall be coated with steel plate primer to prevent rust, the inside of the screw hole shall be coated with butter and the M12 stud shall be screwed in. The exposed thread part of the stud shall be wrapped with thick tape to prevent damage to the thread.

[0051] In this embodiment, the sealing gasket 7 is a rectangular ring cut from an oil-resistant rubber plate. The inner diameter and outer diameter of the rectangular ring are respectively consistent with the sizes of the seat plate 5. A circle of round holes with a diameter 2 mm larger than the stud, i.e. 14 mm, is made on the sealing gasket 7. The hole spacing and position of the round holes are exactly the same as the hole spacing and position of the screw holes on the seat plate 5. The thickness of the sealing gasket 7 is 6 mm, which can have a good sealing effect.

[0052] In this embodiment, the flange plate 6 is made of a Q235 steel plate with a thickness of 8 mm. A circle of circular holes is drilled around the flange plate 6. The diameter of the circular holes is 14 mm. The position and spacing of the holes are completely consistent with the position and spacing of the screw holes on the seat plate 5. During assembly, the studs pass through the circular holes, and the flange plate 6 is firmly fixed to the seat plate 5 by tightening the nuts.

[0053] The working process of the present invention is as follows: the seat plate 5 is welded and fixed on the hull wall plate 9, a sealing gasket 7 is arranged between the flange plate 6 and the seat plate 5, and then bolts are used to fasten the connection, the frame 1 is semi-embeddedly installed at the exhaust port of the oil mist box, and the oil-containing dirty air generated by the ventilation of the engine room oil tank and the crankcase is discharged from the oil mist box to the outside, passing through the filter element 22 and the blade body 21 of the louver 2. The porous structure and lipophilicity of the filter element 22 filter and absorb the oil mist and oil and gas molecules. The obstruction of the blade body 21 makes the oil droplets in the exhaust gas adhere to it, and finally the oil droplets and oil and gas molecules are separated from the exhaust gas and gathered on the filter element 22 and the blade body 21. Under the action of weight, the oil droplets flow downward along the plane part 211 of the blade body 21, drip on the frame 1 through the folded edge 213, and return to the oil mist box. The exhaust gas after separation is oil-free gas. The oil collecting tank 3 provided below the device is used to collect the leaked condensed oil. The condensed oil in the oil collecting tank 3 flows back to the oil mist box through the oil leakage hole 91 on the hull wall plate 9 under the action of gravity.

[0054] In summary, an embodiment of the present invention provides a shutter for a ship oil mist box, wherein the shutter blades are formed by a blade body and a filter element, and the filter element and the blade body of two adjacent louver blades are in contact in the vertical direction, and the filter element and the blade body form a relatively sealed structure in the vertical direction, which can completely isolate the inner and outer ends of the shutter, and the gaseous oil molecules and liquid oil droplets in the oil mist box are first passed through the filter element when discharged from the inside to the outside, and the filter element plays a role of high-efficiency filtering, filtering and collecting the oil and gas molecules and liquid oil droplets, and a small amount of oil droplets passing through the filter element are blocked by the inclined blade body, which further reduces the excretion of oil and gas, reduces the escape of oil and gas, and achieves a good oil and pollution separation effect.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A shutter for a ship oil mist box, characterized in that: The invention comprises a frame (1) and a louver (2) arranged in the frame (1), wherein a plurality of louver (2) are arranged at intervals in the vertical direction; each louver (2) comprises a louver body (21) and a filter element (22); the louver body (21) is arranged obliquely in the frame (1); when the louver is installed, one end facing the oil mist box is defined as the inner end, and the other end is defined as the outer end; the outer end of the louver body (21) is lower than the inner end of the louver body (21); the filter element (22) is arranged at the inner end of the louver body (21); and of two louver (2) adjacent to each other in the vertical direction, the filter element (22) of the louver (2) located at the lower side contacts the louver body (21) of the louver (2) located at the upper side.

2. The shutter for the ship oil mist box according to claim 1, characterized in that: The blade body (21) comprises a plane portion (211) and a groove portion (212) fixedly connected to the plane portion (211); the outer end of the plane portion (211) is lower than the inner end of the plane portion (211); the groove portion (212) is located at the inner end of the plane portion (211); the groove portion (212) is provided with a U-shaped groove (2124); the filter element (22) is embedded in the U-shaped groove (2124); the filter element (22) of the louver (2) located below contacts the groove portion (212) of the blade body (21) located above.

3. The shutter for the ship oil mist box according to claim 2, characterized in that: The groove-shaped portion (212) comprises a bottom edge (2121), a first side edge (2122) and a second side edge (2123); the first side edge (2122), the second side edge (2123) and the bottom edge (2121) enclose the U-shaped groove (2124); the bottom edge (2121) is vertically fixedly connected to the plane portion (211); the first side edge (2122) is located below the second side edge (2123); drainage holes (2125) are also provided on the bottom edge (2121) and the first side edge (2122); the drainage holes (2125) are connected to the U-shaped groove (2124); the louver blade (2) and the filter element (22) located below are in contact with the bottom edge (2121) of the groove-shaped portion (212) located above.

4. The shutter for the ship oil mist box according to claim 3, characterized in that: The height of the first side (2122) is greater than the height of the second side (2123).

5. The shutter for the ship oil mist box according to claim 2, characterized in that: The blade body (21) further comprises a folded edge (213), wherein the folded edge (213) is arranged at the outer end of the plane portion (211), and the folded edge (213) extends in a vertical direction.

6. The shutter for a ship oil mist box according to any one of claims 1 to 5, characterized in that: The shutter further comprises an oil collecting trough (3), the oil collecting trough (3) being arranged at the bottom of the frame (1), the oil collecting trough (3) comprising a guide plate (31) and an oil baffle plate (32) welded and fixed to the guide plate (31), the guide plate (31) being used for being welded and fixed to the hull wall plate (9), and the inner end height of the guide plate (31) being lower than the outer end height.

7. The shutter for a ship oil mist box according to any one of claims 1 to 5, characterized in that: The shutter further comprises a fireproof and insect-proof net (4), wherein there are two fireproof and insect-proof nets (4), and the two fireproof and insect-proof nets (4) are respectively fixedly mounted on the inner and outer ends of the frame (1), and the shutter blade (2) is arranged between the two fireproof and insect-proof nets (4).

8. The shutter for a ship oil mist box according to any one of claims 1 to 5, characterized in that: The shutter further comprises a seat plate (5) and a flange plate (6); the seat plate (5) is used for being welded and fixed on the hull wall plate (9); the flange plate (6) is welded and fixed to the frame (1); the flange plate (6) and the seat plate (5) are fixedly connected by bolts; and a sealing gasket (7) is also provided between the seat plate (5) and the flange plate (6).

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