An oil sewage treatment equipment for ship repair

Abstract

The present invention relates to the technical field related to sewage treatment, and specifically relates to an oil sewage treatment device for ship repair, including a treatment tank, a liquid discharge shaft, a liquid distribution member, a liquid guide layer and a liquid collection cavity. The bottom surface of the treatment tank is fixedly installed on a base through first-level support legs. A liquid inlet is provided on the side wall of the treatment tank at a position near the middle, and the liquid inlet is connected to an oil sewage conveying pipeline. An oil liquid outlet is provided on the side wall of the treatment tank near the upper end, and an oil discharge pipeline is connected to the oil liquid outlet. The liquid discharge shaft is rotatably installed on the bottom surface of the treatment tank through a sealing bearing, and the liquid discharge shaft is a round tube structure with a sealed upper end; by arranging an oil guide pipeline at the top position of the liquid distribution member, the characteristic that the density of the oil body is relatively small is utilized, so that the oil body floats along the oil guide pipeline, and thus the oil body passes through the oil guide pipeline relatively close, so that small oil droplets can better aggregate into large oil droplets, so that the oil bodies in the oil sewage can better aggregate together, so as to facilitate the better separation of oil and water.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to an oil sewage treatment device for ship repair. Background Technique

[0002] The existing Chinese patent document with the publication number of CN117566984B discloses a two-way oil sewage treatment device for ship repair. Its scheme includes a mobile trolley, a storage tank is fixed on the mobile trolley, an inspection opening is arranged on the side of the storage tank, and it also includes a liquid suction mechanism, a volatilization and filtration mechanism, an impurity removal mechanism and an oil-water separation mechanism. The storage tank is divided into an equipment area, an oil storage area, a water storage area and a gas storage area by a partition. The liquid suction mechanism and the volatilization and filtration mechanism are installed in the equipment area, the impurity removal mechanism is installed in the oil storage area, the oil-water separation mechanism is used to filter the sewage in the oil storage area into the water storage area, the liquid suction mechanism is used to suck the oil sewage in the ship into the volatilization and filtration mechanism, and the volatilization and filtration mechanism is respectively connected to the oil storage area and the gas storage area through pipelines; the impurity removal mechanism includes a filter press motor, a filter press screw rod, a pressing plate and a filter element. The filter press screw rod is rotatably installed at the bottom of the oil storage area, the pressing plate is threadedly connected to the filter press screw rod, the filter press motor can drive the pressing plate to reciprocate in the oil storage area through the filter press screw rod, through holes are arranged on the pressing plate, and the filter element is fixed in the through holes and can communicate the spaces on both sides of the pressing plate;

[0003] However, in the above scheme, the filter press motor can drive the pressing plate to reciprocate in the oil storage area through the filter press screw rod to achieve oil-water separation. This method not only has a low separation efficiency, but also has a high overall separation energy consumption requirement, resulting in a poor application effect of the device in actual use. Therefore, the present invention proposes an oil sewage treatment device for ship repair to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil sewage treatment device for ship repair to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical scheme: An oil sewage treatment device for ship repair, including:

[0006] A treatment tank, the bottom surface of the treatment tank is fixedly installed on a base through first-level support legs. An inlet is arranged on the side wall of the treatment tank near the middle position. The inlet is connected to an oil sewage conveying pipeline, and an oil outlet is arranged on the side wall of the treatment tank near the upper end. An oil discharge pipeline is connected to the oil outlet;

[0007] Drainage shaft, the drainage shaft is rotatably installed on the bottom surface of the treatment tank through a sealed bearing. The drainage shaft is a round tube structure with a sealed upper end, and positioning grooves are provided on the side wall of the drainage shaft, and through holes are provided at the bottom of the positioning grooves;

[0008] Liquid distribution component, an annular mounting seat is integrally formed on the inner side wall of the treatment tank. The liquid distribution component is installed on the annular mounting seat by being placed on it, and an oil guiding pipe is provided at the top position of the liquid distribution component;

[0009] Liquid guiding layer, an installation pipe is integrally formed at the central position of the liquid guiding layer. The installation pipe is sleeved on the drainage shaft, and multiple layers of liquid guiding layers are arranged at equal intervals on the drainage shaft;

[0010] Liquid collection cavity, the liquid collection cavity is fixedly installed on the base through secondary support legs, and a drainage pipe is connected to the liquid outlet of the liquid collection cavity, and the upper opening of the liquid collection cavity is located directly below the drainage shaft.

[0011] Preferably, the inlet is arranged on the upper side of the liquid distribution component, the oil liquid outlet is arranged higher than the port of the oil guiding pipe. A sealing cover is fixedly installed at the upper side port of the treatment tank. A transparent glass observation window is provided on the side wall of the treatment tank. A liquid level sensor is arranged in the inner cavity of the treatment tank. A motor mounting seat is fixedly installed on the side wall of the liquid collection cavity. A reduction motor is fixedly installed on the motor mounting seat. A transmission gear is fixedly installed on the output shaft of the reduction motor. A driven gear is fixedly installed at the lower end of the drainage shaft. The driven gear is meshed with the transmission gear.

[0012] Preferably, the liquid guiding layer is in a trumpet-shaped structure with an upward opening, and an oil-friendly coating is applied to the surface layer of the liquid guiding layer. Threaded holes are provided on the installation pipe, and the threaded holes are arranged corresponding to the positioning grooves, and positioning parts are installed in the threaded holes. The positioning parts have a filtering function.

[0013] Preferably, the positioning part is composed of a filtering ball, a first-level connecting shaft, a second-level connecting shaft and a third-level connecting shaft. The filtering ball, the first-level connecting shaft, the second-level connecting shaft and the third-level connecting shaft are integrally formed. Central holes are penetrated through the first-level connecting shaft, the second-level connecting shaft and the third-level connecting shaft. The central holes are communicated with the inner cavity of the filtering ball. Main filtering holes are provided on the side wall of the filtering ball. A screwing nut is integrally formed on the outer side surface of the filtering ball in the direction opposite to the first-level connecting shaft. An inner hexagonal wrench groove is provided on the end surface of the screwing nut. The diameters of the first-level connecting shaft, the second-level connecting shaft and the third-level connecting shaft are arranged in a decreasing trend in sequence. An external thread structure is provided on the outer side wall of the first-level connecting shaft, and the first-level connecting shaft is screwed and installed in the threaded hole. At this time, the second-level connecting shaft is inserted and positioned in the positioning groove.

[0014] Preferably, a rubber sealing washer is sleeved on the three-stage connecting shaft. When the positioning member is actually installed, the rubber sealing washer is in a compressed state.

[0015] Preferably, a limiting plate is integrally formed on the top side wall of the liquid discharge shaft, and a guiding protrusion is integrally formed on the side wall of the liquid discharge shaft. A guiding groove is formed on the side wall of the installation pipe, and the guiding groove is arranged in alignment with the guiding protrusion. When the installation pipe is actually installed, the guiding groove is sleeved on the guiding protrusion, the uppermost installation pipe abuts against the limiting plate, and adjacent installation pipes abut against each other.

[0016] Preferably, a supporting cone is fixedly welded on the outer side wall of the filtering ball at the position of the main filtering holes. The supporting cone is a hollow conical structure, and secondary filtering holes are uniformly formed on the side wall of the supporting cone. A hydrophilic and oleophobic layer is coated on the outer side wall of the supporting cone.

[0017] Preferably, the hydrophilic and oleophobic layer is a Micropore Filter Fabric layer.

[0018] Preferably, support rods are integrally formed at the edge positions of the lower surface of the liquid guiding layer, and multiple groups of support rods are uniformly arranged. An oleophilic and hydrophobic layer is coated on the outer surface of each support rod.

[0019] Preferably, the oleophilic and hydrophobic layer is a fluorocarbon fiber layer. Fluorocarbon fiber filaments are integrally formed on the outer surface of the oleophilic and hydrophobic layer, and multiple groups of fluorocarbon fiber filaments are uniformly arranged on the outer surface of the oleophilic and hydrophobic layer. The oleophilic coating is a polypropylene coating.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By providing a sewage treatment device for ship repair oil wastewater composed of a treatment tank, a liquid discharge shaft, a liquid distribution member, a liquid guiding layer and a liquid collection cavity, and by arranging an oil guiding pipeline at the top position of the liquid distribution member, the characteristic that the density of the oil body is relatively small is utilized, so that the oil body floats along the oil guiding pipeline, and the oil body passes through the oil guiding pipeline relatively closely, so that small oil droplets can be better aggregated into large oil droplets, and the oil bodies in the oil wastewater can be better aggregated together, thus facilitating the separation of oil and water. By arranging multiple layers of liquid guiding layers, a slight stirring effect on the oil and water is formed by the liquid guiding layers, so that the floating efficiency of the oil body is faster. An oleophilic coating is applied to the surface of the liquid guiding layer, so that when the liquid guiding layer rotates, the fine oil droplets in the water body can be adsorbed. The edge of the liquid guiding layer is inclined upward, so that when the small oil droplets are aggregated into larger oil droplets, the larger oil droplets can slide and float along the liquid guiding layer better and finally flow out from the oil guiding pipeline on the liquid distribution member, thereby further improving the effect of separating oil and water from the oil wastewater;

[0022] 2. By opening positioning grooves and through holes on the side wall of the liquid discharge shaft, by opening threaded holes on the installation pipe of the liquid guide layer, and by setting a positioning member composed of a combination of filter balls, a first-level connecting shaft, a second-level connecting shaft, and a third-level connecting shaft, while positioning the liquid guide layer through the positioning member, a certain degree of blocking effect can be formed on the oil in the oil-water mixture, so that while the positioning member realizes the positioning of the liquid guide layer, it can also assist in the separation of oil and water, thereby further improving the oil-water separation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a half-sectional view of the present invention;

[0025] Figure 3 is Figure 2 an enlarged schematic view of the structure at A in

[0026] Figure 4 is Figure 3 an enlarged schematic view of the structure at B in

[0027] Figure 5 is a half-sectional view of the liquid distribution member of the present invention;

[0028] Figure 6 is a schematic structural diagram of the liquid discharge shaft of the present invention;

[0029] Figure 7 is a half-sectional view of the liquid guide layer of the present invention;

[0030] Figure 8 is Figure 7 an enlarged schematic view of the structure at C in

[0031] Figure 9 is Figure 7 an enlarged schematic view of the structure at D in

[0032] Figure 10 is a schematic structural diagram of the positioning member of the present invention;

[0033] Figure 11 is a half-sectional view of the filter ball of the present invention;

[0034] Figure 12 is Figure 11 an enlarged schematic view of the structure at E in

[0035] In the figure: treatment tank 1, liquid discharge shaft 2, liquid distribution member 3, liquid guiding layer 4, liquid collection cavity 5, primary support leg 6, base 7, liquid inlet 8, oil liquid outlet 9, positioning groove 10, through hole 11, annular mounting seat 12, oil guiding pipeline 13, mounting pipe 14, threaded hole 15, positioning member 16, driven gear 17, motor mounting seat 18, reduction motor 19, driving gear 20, filtering ball 21, primary connecting shaft 22, secondary connecting shaft 23, tertiary connecting shaft 24, central hole 25, main filtering hole 26, screwing nut 27, supporting cone 28, secondary filtering hole 29, hydrophilic oleophobic layer 30, limiting plate 31, guiding protrusion 32, guiding groove 33, support rod 34, lipophilic oleophobic layer 35, fluorocarbon fiber filament 36, sealing cover 37, transparent glass observation window 38, secondary support leg 39, drainage pipeline 40, rubber sealing gasket 41. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 - 12 , and the present invention provides embodiments of the following three preferred solutions:

[0038] Embodiment 1: An oil sewage treatment device for ship repair, including a treatment tank 1, a liquid discharge shaft 2, a liquid distribution member 3, a liquid guiding layer 4 and a liquid collection cavity 5. The bottom surface of the treatment tank 1 is fixedly installed on the base 7 through the primary support leg 6. A liquid inlet 8 is provided on the side wall of the treatment tank 1 at a position near the middle. The liquid inlet 8 is connected to an oil sewage conveying pipeline, and an oil liquid outlet 9 is provided on the side wall of the treatment tank 1 near the upper end. An oil discharge pipeline is connected to the oil liquid outlet 9. The liquid discharge shaft 2 is rotatably installed on the bottom surface of the treatment tank 1 through a sealing bearing. The liquid discharge shaft 2 is a round tube structure with a sealed upper end, and a positioning groove 10 is opened on the side wall of the liquid discharge shaft 2. A through hole 11 is opened at the bottom of the positioning groove 10. An annular mounting seat 12 is integrally formed on the inner side wall of the treatment tank 1. The liquid distribution member 3 is erected and installed on the annular mounting seat 12, and an oil guiding pipeline 13 is provided at the top position of the liquid distribution member 3. An installation pipe 14 is integrally formed at the central position of the liquid guiding layer 4. The installation pipe 14 is sleeved on the liquid discharge shaft 2, and multiple layers of the liquid guiding layer 4 are equidistantly arranged on the liquid discharge shaft 2. The liquid collection cavity 5 is fixedly installed on the base 7 through the secondary support leg 39, and the liquid outlet of the liquid collection cavity 5 is connected to a drainage pipeline 40, and the upper opening of the liquid collection cavity 5 is located directly below the liquid discharge shaft 2.

[0039] The installation position of the liquid inlet 8 is located on the upper side of the liquid distribution member 3. The installation position of the oil liquid outlet 9 is higher than the port of the oil guiding pipeline 13. A sealing cover 37 is fixedly installed at the upper side port of the treatment tank 1. A transparent glass observation window 38 is arranged on the side wall of the treatment tank 1. A liquid level sensor is arranged in the inner cavity of the treatment tank 1. A motor mounting seat 18 is fixedly installed on the side wall of the liquid collection cavity 5. A reduction motor 19 is fixedly installed on the motor mounting seat 18. A driving gear 20 is fixedly installed on the output shaft of the reduction motor 19. A driven gear 17 is fixedly installed at the lower end of the liquid discharge shaft 2. The driven gear 17 is meshed with the driving gear 20.

[0040] The liquid guiding layer 4 has a flared structure with an upward opening, and the surface layer of the liquid guiding layer 4 is coated with an oil-loving coating. Threaded holes 15 are formed in the installation pipe 14. The threaded holes 15 correspond to the positioning grooves 10, and positioning members 16 are installed in the threaded holes 15. The positioning members 16 have a filtering function. By providing a ship repair oil sewage treatment device composed of a treatment tank 1, a liquid discharge shaft 2, a liquid distribution member 3, a liquid guiding layer 4 and a liquid collection cavity 5, and by arranging an oil guiding pipeline 13 at the top position of the liquid distribution member 3, the characteristic that the density of the oil body is smaller is utilized, so that the oil body floats along the oil guiding pipeline 13, and thus the oil body passes through the oil guiding pipeline 13 relatively closely, so that small oil droplets can be better aggregated into large oil droplets, so that the oil bodies in the oil sewage can be better aggregated together, so as to facilitate the better separation of oil and water. And by providing multiple layers of liquid guiding layers 4, the liquid guiding layer 4 exerts a slight stirring effect on the oil and water, so that the floating efficiency of the oil body is faster. And the surface of the liquid guiding layer 4 is coated with an oil-loving coating, so that when the liquid guiding layer 4 rotates, it can adsorb the fine oil droplets in the water body. And the edge of the liquid guiding layer 4 is inclined upward, so that when the small oil droplets are aggregated into larger oil droplets, the larger oil droplets can slide and float along the liquid guiding layer 4 better and finally flow out from the oil guiding pipeline 13 on the liquid distribution member 3, thereby further improving the effect of separating oil and water from the oil sewage.

[0041] Embodiment 2: On the basis of Embodiment 1, the positioning member 16 is composed of a filter ball 21, a first-level connecting shaft 22, a second-level connecting shaft 23, and a third-level connecting shaft 24. The filter ball 21, the first-level connecting shaft 22, the second-level connecting shaft 23, and the third-level connecting shaft 24 are integrally formed. A central hole 25 is formed through the first-level connecting shaft 22, the second-level connecting shaft 23, and the third-level connecting shaft 24. The central hole 25 is communicated with the inner cavity of the filter ball 21. Main filter holes 26 are formed on the side wall of the filter ball 21. A screwing nut 27 is integrally formed on the outer side surface of the filter ball 21 in a direction opposite to the first-level connecting shaft 22. An inner hexagonal wrench groove is formed on the end surface of the screwing nut 27. The diameters of the first-level connecting shaft 22, the second-level connecting shaft 23, and the third-level connecting shaft 24 are arranged in a decreasing trend. An external thread structure is formed on the outer side wall of the first-level connecting shaft 22, and the first-level connecting shaft 22 is screwed and installed in the threaded hole 15. At this time, the second-level connecting shaft 23 is inserted and positioned in the positioning groove 10. By forming a positioning groove 10 and a through hole 11 on the side wall of the liquid discharge shaft 2, by forming a threaded hole 15 on the installation pipe 14 of the liquid guide layer 4, and by providing a positioning member 16 composed of a filter ball 21, a first-level connecting shaft 22, a second-level connecting shaft 23, and a third-level connecting shaft 24, a certain degree of blocking effect can be formed on the oil in the oil-water mixture while positioning the liquid guide layer 4 through the positioning member 16. Thus, while the positioning member 16 positions the liquid guide layer 4, it can also assist in the separation of oil and water, thereby further improving the oil-water separation effect of the device.

[0042] A rubber sealing gasket 41 is sleeved on the third-level connecting shaft 24. When the positioning member 16 is actually installed, the rubber sealing gasket 41 is in a compressed state, and the rubber sealing gasket 41 can effectively improve the sealing performance at the connection position of the positioning member 16.

[0043] A limiting plate 31 is integrally formed on the top side wall of the liquid discharge shaft 2, and a guiding protrusion 32 is integrally formed on the side wall of the liquid discharge shaft 2. A guiding groove 33 is formed on the side wall of the installation pipe 14. The guiding groove 33 is arranged in alignment with the guiding protrusion 32. When the installation pipe 14 is actually installed, the guiding groove 33 is sleeved on the guiding protrusion 32, and the topmost installation pipe 14 abuts against the limiting plate 31, and adjacent installation pipes 14 are arranged to abut against each other. By providing a limiting plate 31 at the top of the liquid discharge shaft 2 and a guiding protrusion 32 on the side wall of the liquid discharge shaft 2, it is convenient for the staff to pre-position the installation pipe 14, so as to facilitate the staff to align the positioning groove 10 and the threaded hole 15, thereby improving the installation convenience of the positioning member 16.

[0044] Embodiment 3: On the basis of Embodiment 2, a support cone 28 is fixedly welded to the outer side wall of the filter ball 21 at the position of the main filter hole 26. The support cone 28 is a hollow conical structure, and secondary filter holes 29 are evenly formed in the side wall of the support cone 28. The outer side wall of the support cone 28 is coated with a hydrophilic and oleophobic layer 30. By providing the support cone 28, the filtration area can be effectively increased, so as to achieve the purpose of improving the filtration efficiency. Moreover, by providing the hydrophilic and oleophobic layer 30, the oil body can be better blocked, thereby effectively reducing the oil content in the water discharged by the device.

[0045] The hydrophilic and oleophobic layer 30 is a Micropore Filter Fabric layer.

[0046] Support rods 34 are integrally formed at the edge positions on the lower surface of the liquid guide layer 4. A plurality of groups of support rods 34 are evenly arranged. The outer surfaces of the support rods 34 are coated with oleophilic and hydrophobic layers 35. The support rods 34 and the oleophilic and hydrophobic layers 35 on their outer surfaces can effectively increase the contact area between the water body and the oleophilic material, so that the oil molecules in the water body can be better adsorbed, thereby further improving the separation effect.

[0047] The oleophilic and hydrophobic layer 35 is a fluorocarbon fiber layer. Fluorocarbon fiber filaments 36 are integrally formed on the outer surface of the oleophilic and hydrophobic layer 35. A plurality of groups of fluorocarbon fiber filaments 36 are evenly arranged on the outer surface of the oleophilic and hydrophobic layer 35. The oleophilic coating is a polypropylene coating. The arrangement of the fluorocarbon fiber filaments 36 can further improve the separation effect of the oil molecules in the water body.

[0048] Working principle: In actual use, the oil-contaminated water to be treated is transported into the inner cavity of the treatment tank 1 through the liquid inlet 8, and then the oil-contaminated water flows to the lower side of the liquid distribution member 3 along the gap in the middle part of the liquid distribution member 3. In this process, most of the oil body enters the surface layer of the liquid level, and a small part of the oil body enters the lower side of the liquid distribution member 3. Then the oil-contaminated water enters the gap of the liquid guide layer 4. When the oil body in the oil-contaminated water contacts the surface of the liquid guide layer 4, its oil molecules will be attracted by the liquid guide layer 4 and re-aggregate into larger oil droplets, and then float upward. The water body will pass through the through holes 11 on the drain shaft 2, and then flow along the drain shaft 2 to the liquid collection cavity 5, and flow out through the drain pipe 40 at the bottom of the liquid collection cavity 5.

[0049] Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all application creations using the concept of the present application are within the scope of protection.

Claims

1. An oil sewage treatment device for ship repair, characterized in that: Including: A processing tank (1), the bottom surface of the processing tank (1) is fixedly installed on a base (7) through first-level support legs (6), a liquid inlet (8) is provided on the side wall of the processing tank (1) at a position near the middle, the liquid inlet (8) is connected to an oil sewage conveying pipeline, and an oil liquid outlet (9) is provided on the upper side wall of the processing tank (1), and an oil discharge pipeline is connected to the oil liquid outlet (9); A liquid discharge shaft (2), the liquid discharge shaft (2) is rotatably installed on the bottom surface of the processing tank (1) through a sealed bearing, the liquid discharge shaft (2) is a circular tube structure with a sealed upper end, and a positioning groove (10) is provided on the side wall of the liquid discharge shaft (2), and a through hole (11) is provided at the bottom of the positioning groove (10); A liquid distribution member (3), an annular mounting seat (12) is integrally formed on the inner side wall of the processing tank (1), the liquid distribution member (3) is erected and installed on the annular mounting seat (12), and an oil guiding pipeline (13) is provided at the top position of the liquid distribution member (3); A liquid guiding layer (4), a mounting pipe (14) is integrally formed at the central position of the liquid guiding layer (4), the mounting pipe (14) is sleeved on the liquid discharge shaft (2), and multiple layers of the liquid guiding layer (4) are equidistantly arranged on the liquid discharge shaft (2); A liquid collecting cavity (5), the liquid collecting cavity (5) is fixedly installed on the base (7) through second-level support legs (39), and a drainage pipeline (40) is connected to the liquid outlet of the liquid collecting cavity (5), and the upper opening of the liquid collecting cavity (5) is located directly below the liquid discharge shaft (2); The installation position of the liquid inlet (8) is located above the liquid distribution member (3), and the installation position of the oil liquid outlet (9) is higher than the port of the oil guiding pipeline (13): The liquid distribution member (3) is a rotating body structure with a rotating surface in a lying L shape, and the long side of the cross section of the liquid distribution member (3) is erected and installed on the annular mounting seat (12), a hole gap is formed by the rotation of the end of the short side of the cross section of the liquid distribution member (3), and the oil guiding pipeline (13) is arranged at the top at the intersection of the long side and the short side of the cross section of the liquid distribution member (3); The liquid guiding layer (4) is in a horn-shaped structure with an upward opening, and an oil-attracting coating is coated on the surface layer of the liquid guiding layer (4), a threaded hole (15) is provided on the mounting pipe (14), the threaded hole (15) is arranged corresponding to the positioning groove (10), and a positioning member (16) is installed in the threaded hole (15), and the positioning member (16) has a filtering function.

2. The sewage treatment equipment for ship repair oil according to claim 1, characterized in that: A sealing cover (37) is fixedly installed at the upper side port of the processing tank (1), a transparent glass observation window (38) is provided on the side wall of the processing tank (1), a liquid level sensor is arranged in the inner cavity of the processing tank (1), a motor mounting seat (18) is fixedly installed on the side wall of the liquid collecting cavity (5), a reduction motor (19) is fixedly installed on the motor mounting seat (18), a transmission gear (20) is fixedly installed on the output shaft of the reduction motor (19), a driven gear (17) is fixedly installed at the lower end of the liquid discharge shaft (2), and the driven gear (17) is meshed with the transmission gear (20).

3. A sewage treatment device for ship repair oil, according to claim 1, characterized in that: The positioning member (16) is composed of a filter ball (21), a first-level connecting shaft (22), a second-level connecting shaft (23), and a third-level connecting shaft (24). The filter ball (21), the first-level connecting shaft (22), the second-level connecting shaft (23), and the third-level connecting shaft (24) are integrally formed. Central holes (25) are formed through the first-level connecting shaft (22), the second-level connecting shaft (23), and the third-level connecting shaft (24). The central holes (25) are communicated with the inner cavity of the filter ball (21). Main filter holes (26) are formed in the side wall of the filter ball (21). A screwing nut (27) is integrally formed on the outer side surface of the filter ball (21) in a direction opposite to the first-level connecting shaft (22). An inner hexagonal wrench groove is formed in the end surface of the screwing nut (27). The diameters of the first-level connecting shaft (22), the second-level connecting shaft (23), and the third-level connecting shaft (24) are arranged in a decreasing trend. An external thread structure is formed on the outer side wall of the first-level connecting shaft (22). The first-level connecting shaft (22) is screwed and installed in the threaded hole (15). At this time, the second-level connecting shaft (23) is inserted and positioned in the positioning groove (10).

4. The oil sewage treatment equipment for ship repair according to claim 3, characterized in that: A rubber sealing gasket (41) is sleeved on the third-level connecting shaft (24). When the positioning member (16) is actually installed, the rubber sealing gasket (41) is in a compressed state.

5. The sewage treatment equipment for ship repair oil according to claim 3, characterized in that: A limiting plate (31) is integrally formed on the top side wall of the liquid discharge shaft (2). A guiding protrusion (32) is integrally formed on the side wall of the liquid discharge shaft (2). A guiding groove (33) is formed in the side wall of the installation pipe (14). The guiding groove (33) is arranged in alignment with the guiding protrusion (32). When the installation pipe (14) is actually installed, the guiding groove (33) is sleeved on the guiding protrusion (32). The topmost installation pipe (14) abuts against the limiting plate (31), and adjacent installation pipes (14) are in an abutting arrangement.

6. The sewage treatment equipment for ship repair oil according to claim 3, characterized in that: A support cone (28) is fixedly welded on the outer side wall of the filter ball (21) at the position of the main filter hole (26). The support cone (28) is a hollow conical structure. Secondary filter holes (29) are uniformly formed in the side wall of the support cone (28). A hydrophilic and oleophobic layer (30) is coated on the outer side wall of the support cone (28).

7. The oil sewage treatment equipment for ship repair according to claim 6, characterized in that: The hydrophilic and oleophobic layer (30) is a Miffy cloth layer.

8. The oil sewage treatment equipment for ship repair according to claim 3, characterized in that: Support rods (34) are integrally formed at the edge position of the lower surface of the liquid guiding layer (4). Multiple groups of support rods (34) are uniformly arranged. An oleophilic and hydrophobic layer (35) is coated on the outer surface of each support rod (34).

9. The oily sewage treatment equipment for ship repair according to claim 8, characterized in that: The oleophilic and hydrophobic layer (35) is a fluorocarbon fiber layer. Fluorocarbon fiber filaments (36) are integrally formed on the outer surface of the oleophilic and hydrophobic layer (35). Multiple groups of fluorocarbon fiber filaments (36) are uniformly arranged on the outer surface of the oleophilic and hydrophobic layer (35). The oleophilic coating is a polypropylene coating.

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