Oily water treatment equipment for boat cleaning

Abstract

The invention relates to oily water treatment equipment for boat cleaning, which belongs to the technical field of sewage treatment and comprises an oily water treatment tank, an oily water volatilization mechanism and an oil-water separation mechanism. The oily water volatilization mechanism comprises a volatilization box arranged in the oily water treatment tank and a heating piece arranged in the volatilization box, the volatilization box is communicated with an input pipe used for inputting oily water, the heating piece is used for heating the oily water in the volatilization box, a gas collection box is arranged in the oily water treatment tank, and the gas collection box is used for collecting gas in the oily water treatment tank. The volatilization box is communicated with the gas collection box through a gas conveying pipe, the volatilization box is communicated with an output pipe used for conveying heated oily water into the oil-water separation mechanism, an adjusting plate used for opening and closing a pipe opening of the output pipe is arranged in the volatilization box in a sliding mode, and a memory metal strip is arranged between the adjusting plate and the volatilization box. The device has the effect of ensuring the safety in the oily water treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an oily sewage treatment device for ship cleaning. Background Art

[0002] During the ship cleaning process, oily sewage mixed with oil and water is usually generated. To protect the marine environment and avoid polluting the sea water, an oily sewage treatment device is required to treat the oily wastewater before it can be discharged into the sea water.

[0003] Currently, most oily sewage treatment devices simply separate oil from water. However, the oily sewage contains volatile oils, such as gasoline and other combustion oils. The sewage treatment method of oil-water separation cannot treat the high-risk mixtures generated by the volatilization of oils, and it is easy to generate safety hazards during the oily sewage treatment process. Summary of the Invention

[0004] The present invention discloses an oily sewage treatment device for ship cleaning, which helps to ensure the safety during the oily sewage treatment process.

[0005] An oily sewage treatment device for ship cleaning provided by the present invention adopts the following technical solutions: An oily sewage treatment device for ship cleaning includes an oily sewage treatment tank, an oily sewage volatilization mechanism, and an oil-water separation mechanism. The oily sewage volatilization mechanism includes a volatilization tank disposed in the oily sewage treatment tank and a heating element disposed in the volatilization tank. The volatilization tank is communicated with an input pipe for inputting oily sewage. The heating element is used to heat the oily sewage in the volatilization tank. A gas collection tank is disposed in the oily sewage treatment tank. The volatilization tank and the gas collection tank are communicated through a gas delivery pipe. The volatilization tank is communicated with an output pipe for delivering the heated and volatilized oily sewage to the oil-water separation mechanism. The oil-water separation mechanism is used to separate oil from the heated and volatilized oily sewage. A regulating plate for opening and closing the orifice of the output pipe is slidably disposed in the volatilization tank. A shape memory metal strip is disposed between the regulating plate and the volatilization tank. When the temperature of the shape memory metal strip is less than a preset value, the regulating plate abuts against the orifice of the output pipe to close the output pipe. When the temperature of the shape memory metal strip is greater than or equal to the preset value, the shape memory metal strip deforms to move the regulating plate away from the output pipe.

[0006] Further, the regulating plate is a floating plate. The density of the regulating plate is greater than the density of water, and the buoyancy of the regulating plate is less than the elastic force of the shape memory metal strip.

[0007] Further, a rotating rod is rotatably disposed in the volatilization tank. A plurality of stirring blades are disposed on the rotating rod along its circumferential direction. A driving source for driving the rotating rod to rotate is disposed on the volatilization tank.

[0008] Further, the oil-water separation mechanism includes an oil-water separation tank disposed in the oil and sewage treatment tank, a partition plate disposed in the oil-water separation tank, an oil-water separation membrane disposed on the partition plate, and a pushing assembly disposed in the oil-water separation tank. The partition plate divides the oil-water separation tank into a treatment chamber and a water storage chamber. The treatment chamber communicates with one end of the output pipe away from the volatilization tank. An opening is formed in the partition plate, and the oil-water separation membrane covers the opening. The pushing assembly is disposed in the treatment chamber and is used to squeeze the water in the oil and sewage in the treatment chamber into the water storage chamber.

[0009] Further, the pushing assembly includes an oil and sewage treatment plate slidably disposed in the treatment chamber and a driving member disposed in the treatment chamber. The sliding direction of the oil and sewage treatment plate is perpendicular to the plane where the oil-water separation membrane is located, and the driving member is used to drive the oil and sewage treatment plate to slide in a direction close to or away from the oil-water separation membrane.

[0010] Further, through holes are formed in the oil and sewage treatment plate. An impurity removal frame is disposed in the through holes of the oil and sewage treatment plate. An installation strip is slidably disposed on one side of the oil and sewage treatment plate close to the oil-water separation membrane. The sliding direction of the installation strip is perpendicular to the sliding direction of the oil and sewage treatment plate. An adjusting member is disposed on the oil and sewage treatment plate and is used to adjust the sliding of the installation strip in a direction close to or away from the impurity removal frame. A closing plate for blocking or opening the impurity removal frame is rotatably disposed on the installation strip. The rotation axis of the closing plate is perpendicular to the sliding direction of the oil and sewage treatment plate. An elastic member is disposed on the installation strip and is used to drive the closing plate to rotate in a direction close to the oil and sewage treatment plate.

[0011] Further, the adjusting member includes a sliding rod slidably penetrating through the oil and sewage treatment plate, a connecting plate disposed on the sliding rod, a connecting rod hinged to the connecting plate, and a spring sleeved on the sliding rod. The sliding direction of the sliding rod is parallel to the sliding direction of the oil and sewage treatment plate. The sliding rod is located on one side of the installation strip close to the impurity removal frame. The connecting plate is located at one end of the sliding rod close to the oil-water separation membrane. The end of the connecting rod away from the connecting plate is hinged to the installation strip. The hinge axis of the connecting rod is perpendicular to the sliding direction of the installation strip. The distance from the connecting rod to the oil and sewage treatment plate increases along the direction of the installation strip close to the connecting plate. One end of the spring is disposed on the adjusting plate, and the other end is disposed on the oil and sewage treatment plate. The spring is used to push the adjusting plate to slide towards the side close to the oil-water separation membrane. When the spring is in a natural state, the closing plate is aligned with the impurity removal frame.

[0012] Further, a rotating shaft is disposed on the closing plate, and the rotating shaft is rotatably disposed on the installation strip. The elastic member includes a torsion spring for driving the closing plate to rotate in a direction close to the oil and sewage treatment plate. The torsion spring is sleeved on the rotating shaft. One end of the torsion spring is disposed on the installation strip, and the other end is disposed on the closing plate.

[0013] Furthermore, the upper surface of the output pipe is higher than the bottom wall of the evaporation tank, and a filter screen is arranged at the pipe orifice of the output pipe.

[0014] The oil sewage treatment equipment for ship cleaning of the present application has at least the following beneficial effects: 1. When in use, the oil-containing sewage generated by ship cleaning is pumped into the evaporation tank. Since the oil-containing sewage is at room temperature at this time, the adjusting plate and the shape memory metal strip are in the initial state, so that the adjusting plate closes the pipe orifice of the output pipe. Then, the oil-containing sewage in the evaporation tank is heated by the heating element, so that the volatile oil in the oil-containing sewage enters the gas collection tank for storage. When the temperature of the oil-containing sewage is greater than or equal to the preset value, the shape memory metal strip gradually deforms, and the adjusting plate is supported by the deformation of the shape memory metal strip, so that the adjusting plate opens the output pipe. Then, the oil-containing sewage after heat treatment in the evaporation tank enters the oil-water separation mechanism, and then the oil and water in the oil-containing sewage are separated by the oil-water separation mechanism, so as to facilitate separate subsequent treatment, which helps to protect the marine environment and avoid polluting the water body of the sea area. Since the volatile oil in the oil-containing sewage is collected and treated before oil-water separation, it helps to ensure the safety during the oil sewage treatment process; 2. When all the oil-containing sewage flows to the side of the oil sewage treatment plate close to the partition board, the closing plate blocks the impurity removal frame under the action of the torsion spring. Then, the oil sewage treatment plate is driven by the driving member to slide towards the direction close to the partition board. Since the through hole is in a closed state at this time, with the extrusion of the oil sewage treatment plate, neither the oil nor the water in the oil-containing sewage can pass through the through hole. At this time, the water in the oil-containing sewage can only enter the water storage chamber through the oil-water separation membrane, which greatly improves the effect of oil and water separation treatment. As the water in the oil-containing sewage gradually enters the water storage chamber completely, the resistance to the continuous movement of the oil sewage treatment plate increases at this time. Then, the oil will generate a reverse acting force on the connecting plate, driving the connecting plate and the sliding rod to move away from the partition board relative to the oil sewage treatment plate. Then, through the link transmission, the installation strip moves away from the through hole, and the closing plate gradually opens the through hole. As the oil sewage treatment plate continues to approach the partition board, the oil enters the side of the oil sewage treatment plate away from the partition board through the impurity removal frame, so as to realize oil-water impurity removal and efficient separation, which helps to protect the marine environment and avoid polluting the water body of the sea area. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention or the description of the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present invention.

[0017] Figure 2 It is a partial structural cross-sectional view of an embodiment of the present invention.

[0018] Figure 3 It is a sectional view of the overall structure of the volatilization box in the embodiment of the present invention.

[0019] Figure 4 It is a partial structural sectional view of the oil-water separation box in an embodiment of the present invention.

[0020] Figure 5 It is a partial structural sectional exploded view of an embodiment of the present invention, and is mainly used to show the structure of the impurity removal frame.

[0021] Figure 6 yes Figure 4 Enlarged view of part A.

[0022] Explanation of reference numerals: 1. Oily wastewater treatment tank; 2. Volatilization box; 3. Input pipe; 4. Gas collection box; 5. Gas delivery pipe; 6. Output pipe; 7. Adjustment plate; 8. Memory metal strip; 9. Rotating rod; 10. Stirring blade; 12. Oil-water separation box; 13. Partition plate; 14. Oil-water separation membrane; 15. Treatment chamber; 16. Water storage chamber; 17. Opening; 18. Oily wastewater treatment plate; 19. Through hole; 20. De-impurity frame; 201. Filter frame; 202. Magnetic strip ; 21. Mounting strip; 22. Closing plate; 23. Sliding rod; 24. Connecting plate; 25. Connecting rod; 26. Spring; 27. Rotating shaft; 28. Torsion spring; 29. ​​Filter; 30. Car body; 31. Inspection door; 32. Heating pipe; 33. Guide rod; 34. Driving member; 341. Screw rod; 342. Driving motor; 35. Connecting pipe; 36. Anti-backflow plate; 37. First discharge pipe; 38. Second discharge pipe; 39. Control valve; 40. Anti-slip block. DETAILED DESCRIPTION

[0023] The following combination Figures 1-6 The present invention is described in further detail.

[0024] The embodiment of the present invention discloses an oily wastewater treatment device for boat cleaning. Figure 1 and Figure 2The oily wastewater treatment equipment for boat cleaning includes an oily wastewater treatment tank 1, an oily wastewater volatilization mechanism and an oil-water separation mechanism. To facilitate the movement of the oily wastewater treatment equipment, the oily wastewater treatment tank 1 is fixedly mounted on a movable vehicle body 30. An inspection door 31 is installed on the side wall of the oily wastewater treatment tank 1, which is helpful for inspecting and cleaning the inside of the oily wastewater treatment tank 1. Among them, the oily wastewater volatilization mechanism includes a volatilization box 2 and a heating element. The volatilization box 2 is fixedly mounted in the oily wastewater treatment tank 1. The volatilization box 2 is located at the upper end of the oily wastewater treatment tank 1. The upper end of the volatilization box 2 is connected to an input pipe 3 for inputting oily wastewater. Specifically, the input pipe 3 is passed through the oily wastewater treatment tank 1 and connected to an external suction pump body. The oily wastewater generated by boat cleaning can be pumped into the volatilization box 2 through the external suction pump body.

[0025] Reference Figure 2 , a heating element is arranged in the volatilization box 2, and the heating element is used to heat the oily wastewater in the volatilization box 2. A gas collecting box 4 is fixedly arranged in the oily wastewater treatment tank 1, and the gas collecting box 4 is located on the horizontal side of the volatilization box 2. The volatilization box 2 and the gas collecting box 4 are connected through a gas delivery pipe 5. In order to facilitate the collection of volatile oil, the gas delivery pipe 5 is connected to the upper end of the volatilization box 2, and a one-way valve is installed on the gas delivery pipe 5, so that the volatile oil can only enter the gas collecting box 4 from the volatilization box 2 without backflow. The gas collecting box 4 is connected with a feed pipe (not marked in the figure) for outputting volatile oil. The feed pipe is passed through the oily wastewater treatment tank 1 and is installed with a valve.

[0026] Reference Figure 2 and Figure 3, the bottom wall of the volatilization tank 2 is connected with an output pipe 6 for conveying the heated oily sewage to the oil-water separation mechanism. The output pipe 6 extends downward, and a one-way valve is also installed on the output pipe 6. The oil-water separation mechanism is used for separating oil and water from the heated and volatilized oily sewage. A regulating plate 7 for opening and closing the orifice of the output pipe 6 is slidably arranged in the volatilization tank 2. The regulating plate 7 is slidably arranged in the vertical direction, and the regulating plate 7 is misaligned with the input pipe 3, so that the oily sewage entering the volatilization tank 2 will not directly flow onto the regulating plate 7; a shape memory metal strip 8 is arranged between the regulating plate 7 and the bottom wall of the volatilization tank 2. When the temperature of the shape memory metal strip 8 is less than the preset value, the shape memory metal strip 8 is in a bent state, and the regulating plate 7 abuts against the orifice of the output pipe 6 to close the output pipe 6; specifically, when the temperature of the shape memory metal strip 8 is less than the preset value, it is in an S shape. One end of the shape memory metal strip 8 is fixed to the bottom wall of the volatilization tank 2, and the other end is fixed to the side of the regulating plate 7 close to the output pipe 6. When the temperature of the shape memory metal strip 8 is greater than or equal to the preset value, the shape memory metal strip 8 deforms to make the regulating plate 7 move away from the output pipe 6. In the embodiment of the present invention, the preset value is taken as 50 °C. When the temperature of the shape memory metal strip 8 is 50 °C, it deforms into a vertical straight line shape. Among them, the shape memory metal strip 8 can adopt a nickel-titanium alloy strip, and the nickel-titanium alloy is a two-way shape memory metal; to help improve the adjustment effect, multiple shape memory metal strips 8 can be arranged as needed. In other embodiments, the preset value can be taken as other values according to needs, such as 60 °C.

[0027] During use, the oily sewage generated by ship cleaning is pumped into the volatilization tank 2 through the input pipe 3 by an external liquid suction pump body. Since the oily sewage is at room temperature at this time, the regulating plate 7 and the shape memory metal strip 8 are in the initial state, that is, the shape memory metal strip 8 is in a bent S shape, and the regulating plate 7 closes the orifice of the output pipe 6, so that the oily sewage entering the volatilization tank 2 can be stored in the volatilization tank 2. Then, the oily sewage in the volatilization tank 2 is heated by a heating element. As the temperature of the oily sewage rises, the volatile oil in the oily sewage enters the gas collection tank 4 through the upper gas delivery pipe 5 for storage, which is convenient for centralized treatment; as the temperature of the oily sewage in the volatilization tank 2 rises, when the temperature is greater than the preset value, the shape memory metal strip 8 gradually deforms, and the shape memory metal strip 8 supports the regulating plate 7, making the regulating plate 7 move in a direction away from the output pipe 6, opening the output pipe 6. Then, the heated oily sewage in the volatilization tank 2 enters the oil-water separation mechanism through the output pipe 6, and the oil and water in the oily sewage are separated by the oil-water separation mechanism, so as to facilitate the separate treatment of the oil and discharge the qualified water body after detection, which helps to protect the marine environment and avoid polluting the sea water. Since the volatile oil in the oily sewage is collected and treated before oil-water separation, it helps to ensure the safety during the oil sewage treatment process.

[0028] Refer to Figure 3, for facilitating the heating of the oily sewage in the volatilization tank 2, the heating member includes a heating pipe 32, and the heating pipe 32 is fixedly installed on the bottom wall of the volatilization tank 2. By starting the heating pipe 32, the heating of the oily sewage in the volatilization tank 2 can be realized. In other embodiments, the heating pipe 32 can be replaced by a heating wire.

[0029] Refer to Figure 3 , for facilitating the memory of the installation of the metal strip 8, the upper surface of the output pipe 6 is higher than the bottom wall of the volatilization tank 2. Specifically, the distance from the upper surface of the output pipe 6 to the bottom wall of the volatilization tank 2 is less than 5 mm, and at the same time, the large solid particles in the oily sewage pumped into the volatilization tank 2 can be deposited on the bottom wall of the volatilization tank 2 under the action of gravity and are not likely to enter the oil-water separation mechanism through the output pipe 6. A filter screen 29 is fixedly arranged at the orifice of the output pipe 6, which helps to preliminarily filter the oily sewage.

[0030] Refer to Figure 3 , further, the adjusting plate 7 is a heat-resistant floating plate, the density of the adjusting plate 7 is greater than the density of water, and the buoyancy of the adjusting plate 7 is less than the elastic force of the memory metal strip 8. Using a floating plate for the adjusting plate 7 enables the adjusting plate 7 to move upward under its own buoyancy when the memory metal strip 8 deforms, which helps to ensure that the adjusting plate 7 can rise to open the output pipe 6 and reduce the resistance to the deformation of the memory metal strip 8.

[0031] Refer to Figure 3 , a rotating rod 9 is rotatably arranged in the volatilization tank 2. The rotating rod 9 is located above the adjusting plate 7, the rotation axis of the rotating rod 9 is arranged in the horizontal direction, and a plurality of stirring blades 10 are fixed along the circumferential direction of the rotating rod 9. The distance from the side of the stirring blade 10 far away from the rotating rod 9 to the rotating rod 9 is less than the distance from the adjusting plate 7 after rising to the rotating rod 9, so that the stirring blades 10 do not affect the rising of the adjusting plate 7. A driving source (not marked in the figure) for driving the rotating rod 9 to rotate is arranged on the volatilization tank 2. The driving source can be one of a stepping motor, a servo motor or a driving motor installed on the volatilization tank 2, and is not limited here.

[0032] When heating the oily sewage in the volatilization tank 2, the driving source drives the rotating rod 9 to drive the stirring blades 10 to rotate. The stirring blades 10 help to stir the oily sewage and help to accelerate the volatilization rate of the volatile oil in the oily sewage.

[0033] Refer to Figure 2 and Figure 4, To facilitate the separation of oil and water in the oily sewage, the oil-water separation mechanism includes an oil-water separation tank 12, a partition plate 13, an oil-water separation membrane 14, and a pushing component. The oil-water separation tank 12 is fixedly arranged in the oily sewage treatment tank 1. The oil-water separation tank 12 is located below the volatilization tank 2. The longitudinal section of the oil-water separation tank 12 is circular. The length direction of the oil-water separation tank 12 is parallel to the arrangement direction of the volatilization tank 2 and the gas collection tank 4; The partition plate 13 is fixedly arranged in the oil-water separation tank 12. The partition plate 13 divides the oil-water separation tank 12 into a treatment chamber 15 and a water storage chamber 16. The treatment chamber 15 and the water storage chamber 16 are arranged horizontally. Among them, the treatment chamber 15 is located on the side of the oil-water separation tank 12 close to the volatilization tank 2. The upper end of the treatment chamber 15 is communicated with the end of the output pipe 6 far from the volatilization tank 2.

[0034] Refer to Figure 2 and Figure 4 , An opening 17 is formed in the partition plate 13. The opening 17 is located at the lower end of the partition plate 13. The oil-water separation membrane 14 is fixedly arranged on the partition plate 13 and covers the opening 17. The oil-water separation membrane 14 is a membrane structure that only allows water to pass through and does not allow oil to pass through, which belongs to the prior art and will not be elaborated here. The pushing component is arranged in the treatment chamber 15. The pushing component is used to squeeze the water body in the oily sewage in the treatment chamber 15 into the water storage chamber 16.

[0035] Refer to Figure 4 and Figure 5 , To facilitate the squeezing of the water body in the oily sewage in the treatment chamber 15 into the water storage chamber 16, the pushing component includes an oily sewage treatment plate 18 and a driving member 34. A guide rod 33 is fixed in the treatment chamber 15. The length direction of the guide rod 33 is perpendicular to the plane where the oil-water separation membrane 14 is located. The oily sewage treatment plate 18 is slidably sleeved on the guide rod 33. The outer wall of the oily sewage treatment plate 18 abuts against the inner wall of the treatment chamber 15. The sliding direction of the oily sewage treatment plate 18 is perpendicular to the plane where the oil-water separation membrane 14 is located. The driving member 34 is arranged on the treatment chamber 15. The driving member 34 is used to drive the oily sewage treatment plate 18 to slide in the direction close to or away from the oil-water separation membrane 14.

[0036] The heated oily sewage enters the treatment chamber 15 through the output pipe 6, so that the oily sewage treatment plate 18 is located on the side of the output pipe 6 far from the partition plate 13. Then, the driving member 34 is used to drive the oily sewage treatment plate 18 to slide in the direction close to the oil-water separation membrane 14. The oily sewage treatment plate 18 squeezes the oily sewage towards the oil-water separation membrane 14, so that the water in the oily sewage passes through the oil-water separation membrane 14 and enters the water storage chamber 16, while the oil continues to be stored in the treatment chamber 15, which is convenient for separately recycling the oil, thus helping to protect the marine environment and avoid polluting the water body of the sea area.

[0037] Refer to Figure 4, To facilitate the sliding of the oil sewage treatment plate 18, the driving member 34 includes a lead screw 341 and a driving motor 342. The lead screw 341 is rotatably disposed in the treatment chamber 15, and the rotation axis of the lead screw 341 is parallel to the sliding direction of the oil sewage treatment plate 18. The oil sewage treatment plate 18 is threadedly sleeved on the lead screw 341. The driving motor 342 is fixedly installed outside the treatment chamber 15, and the lead screw 341 is coaxially fixed to the output shaft of the driving motor 342. By starting the driving motor 342, the driving motor 342 drives the lead screw 341 to rotate, which helps the lead screw 341 to drive the oil sewage treatment plate 18 to slide as needed. In other embodiments, the lead screw 341 and the driving motor 342 can be replaced by a cylinder. The cylinder is installed outside the treatment chamber 15, the piston rod of the cylinder is slidably disposed in the treatment chamber 15, and the oil sewage treatment plate 18 is fixedly connected to the piston rod of the cylinder. By starting the cylinder, the oil sewage treatment plate 18 can also be driven to slide.

[0038] Refer to Figure 4 , To prevent the water in the water storage chamber 16 from flowing back into the treatment chamber 15 easily, a connecting pipe 35 is fixed on the side of the partition 13 close to the water storage chamber 16. The connecting pipe 35 is communicated with the opening 17. A backflow prevention plate 36 is hinged in the connecting pipe 35. The hinge axis of the backflow prevention plate 36 is perpendicular to the length direction of the connecting pipe 35. A return torsion spring (not marked in the figure) is sleeved on the hinge shaft of the backflow prevention plate 36. One end of the return torsion spring is fixed on the inner wall of the connecting pipe 35, and the other end is fixed on the backflow prevention plate 36. When the return torsion spring is in the natural state, the side of the backflow prevention plate 36 away from its hinge axis abuts against the inner wall of the connecting pipe 35, and the side of the backflow prevention plate 36 away from its hinge axis is inclined in the direction away from the opening 17.

[0039] When the oil sewage treatment plate 18 squeezes the oil sewage, the water in the oil sewage can enter the connecting pipe 35 through the oil-water separation membrane 14, and push the backflow prevention plate 36 to rotate away from the opening 17 to open the connecting pipe 35. Then the sewage enters the water storage chamber 16 through the connecting pipe 35. When all the water in the oil sewage flows into the water storage chamber 16, the abutting force received by the backflow prevention plate 36 decreases. The backflow prevention plate 36 rotates towards the direction close to the opening 17 under the action of the return torsion spring to close the connecting pipe 35, so that the water in the water storage chamber 16 will not flow back into the treatment chamber 15.

[0040] Refer to Figure 1 and Figure 2 , To facilitate the treatment of the separated oil and water, a first discharge pipe 37 is communicated with the bottom of the treatment chamber 15, and a second discharge pipe 38 is communicated with the bottom of the water storage chamber 16. Control valves 39 are installed on both the first discharge pipe 37 and the second discharge pipe 38. The first discharge pipe 37 and the second discharge pipe 38 are both disposed through the oil sewage treatment tank 1 and the vehicle body 30; so as to facilitate the separate recovery and treatment of the oil and water.

[0041] Reference Figure 4 and Figure 5 , a through hole 19 is formed in the oil and sewage treatment plate 18. The through hole 19 is located at the center of the oil and sewage treatment plate 18. A impurity removal frame 20 is fixedly arranged in the through hole 19 of the oil and sewage treatment plate 18. The impurity removal frame 20 includes a filter frame 201 and a magnetic strip 202. The filter frame 201 is fixed in the through hole 19, and the magnetic strip 202 is fixed in the filter frame 201. A mounting strip 21 is slidably arranged on one side of the oil and sewage treatment plate 18 close to the oil-water separation membrane 14. The mounting strip 21 and the oil and sewage treatment plate 18 are slidably matched through a slide rail. The sliding direction of the mounting strip 21 is perpendicular to the sliding direction of the oil and sewage treatment plate 18. Specifically, the mounting strip 21 is located above the through hole 19, and the sliding direction of the mounting strip 21 is arranged in the vertical direction. The sliding between the mounting strip 21 and the oil and sewage treatment plate 18 is guided by a slider and a chute. The oil and sewage treatment plate 18 is provided with an adjusting member for adjusting the mounting strip 21 to slide in a direction close to or away from the filter frame 201.

[0042] Reference Figure 4 and Figure 6 , a rotating shaft 27 is rotatably arranged on the mounting strip 21. The rotation axis of the rotating shaft 27 is perpendicular to the sliding direction of the oil and sewage treatment plate 18. Further, the rotation axis of the rotating shaft 27 is perpendicular to the sliding direction of the mounting strip 21. A closing plate 22 for shielding or opening the impurity removal frame 20 is fixedly sleeved on the rotating shaft 27. The closing plate 22 is rotatably connected to the mounting strip 21 through the rotating shaft 27. The mounting strip 21 is provided with an elastic member for driving the rotating shaft 27 to make the closing plate 22 rotate in a direction close to the oil and sewage treatment plate 18.

[0043] Reference Figure 4 and Figure 5, To facilitate the adjustment of the sliding of the mounting strip 21 in the direction of approaching or moving away from the filter frame 201, the adjusting member includes a sliding rod 23, a connecting plate 24, a connecting rod 25, and a spring 26. The sliding rod 23 is slidably inserted through the oil and sewage treatment plate 18. The sliding direction of the sliding rod 23 is parallel to the sliding direction of the oil and sewage treatment plate 18. The sliding rod 23 is located below the filter frame 201. The connecting plate 24 is fixed to one end of the sliding rod 23 close to the oil-water separation membrane 14. An anti-disengagement block 40 is fixed to the end of the sliding rod 23 away from the oil-water separation membrane 14, so that the sliding rod 23 and the oil and sewage treatment plate 18 will not be disengaged. One end of the connecting rod 25 is hinged to the connecting plate 24, and the other end is hinged to the mounting strip 21. The hinge axis of the connecting rod 25 is perpendicular to the sliding direction of the mounting strip 21. The distance from the connecting rod 25 to the oil and sewage treatment plate 18 increases in the direction of the mounting strip 21 approaching the connecting plate 24. The connecting rod 25 is misaligned with the closing plate 22 and is not likely to interfere with the rotation of the closing plate 22. The spring 26 is sleeved on the sliding rod 23. The spring 26 is located between the oil and sewage treatment plate 18 and the connecting plate 24. One end of the spring 26 is fixed to the adjusting plate 7, and the other end is fixed to the oil and sewage treatment plate 18. The spring 26 is used to push the adjusting plate 7 to slide towards the side close to the oil-water separation membrane 14. When the spring 26 is in the natural state, the closing plate 22 is aligned with the impurity removal frame 20, and the anti-disengagement block 40 abuts against the oil and sewage treatment plate 18.

[0044] Referring to Figure 4 and Figure 6 , To facilitate driving the closing plate 22 to rotate towards the direction of approaching the oil and sewage treatment plate 18, the elastic member includes a torsion spring 28. The torsion spring 28 is sleeved on the rotating shaft 27. One end of the torsion spring 28 is fixed to the mounting strip 21, and the other end is fixed to the closing plate 22. When the torsion spring 28 is in the natural state, the closing plate 22 abuts against the side of the oil and sewage treatment plate 18 close to the oil-water separation membrane 14.

[0045] Before the heated oily sewage enters the treatment chamber 15, the oily sewage treatment plate 18 is driven by the driving member 34 to be located on the side of the output pipe 6 close to the partition plate 13. Then, the oily sewage after heating and volatilization enters the treatment chamber 15. Since the spring 26 and the torsion spring 28 are in their natural states at this time, the closing plate 22 seals the filter frame 201. Then, the oily sewage treatment plate 18 is driven by the driving member 34 to slide in a direction away from the partition plate 13. The oily sewage treatment plate 18 squeezes the oily sewage, causing the oily sewage to generate a resisting force on the closing plate 22. The oily sewage abuts against the closing plate 22 and rotates in a direction away from the filter frame 201 to open the through hole 19. As the oily sewage treatment plate 18 continues to move, the oily sewage passes through the filter frame 201 at the through hole 19 for filtration. The magnetic strip 202 can adsorb magnetic substances in the oily sewage. When all the oily sewage flows to the side of the oily sewage treatment plate 18 close to the partition plate 13, the resisting force received by the closing plate 22 decreases. The closing plate 22 rotates in a direction close to the filter frame 201 under the action of the torsion spring 28 to seal the filter frame 201. Then, the oily sewage treatment plate 18 is driven by the driving member 34 to slide in a direction close to the partition plate 13. Since the through hole 19 is in a closed state at this time, as the oily sewage treatment plate 18 is squeezed, the water in the oily sewage can enter the water storage chamber 16 through the oil-water separation membrane 14. As the water in the oily sewage gradually enters the water storage chamber 16, when most of the substances between the oily sewage treatment plate 18 and the partition plate 13 are oil, the resistance of the oily sewage treatment plate 18 sliding in a direction close to the partition plate 13 increases. Then, the oil will generate a reverse acting force on the connecting plate 24, driving the connecting plate 24 and the sliding rod 23 to move relative to the oily sewage treatment plate 18 in a direction away from the partition plate 13, compressing the spring 26. During the process that the connecting plate 24 gradually approaches the oily sewage treatment plate 18, the connecting rod 25 is pressed, causing the end of the connecting rod 25 away from the connecting plate 24 to extend in a direction away from the through hole 19. Then, the connecting rod 25 drives the mounting strip 21 to slide in a direction away from the through hole 19, causing the mounting strip 21 to drive the closing plate 22 to gradually move away from the filter frame 201 to open the through hole 19. As the oily sewage treatment plate 18 continues to move, the oil will pass through the filter frame 201 again and enter the side of the oily sewage treatment plate 18 away from the partition plate 13, thus realizing impurity removal and oil-water separation, and the oil in the treatment chamber 15 can be separately recovered and treated, which helps to protect the marine environment and avoid polluting the sea water. Among them, the cross-sectional areas of the connecting plate 24 and the sliding rod 23 can be set as required to ensure that after most of the substances between the oily sewage treatment plate 18 and the partition plate 13 are oil, when the oily sewage treatment plate 18 continues to slide in a direction close to the partition plate 13, the oil will generate a reverse acting force on the connecting plate 24, driving the connecting plate 24 and the sliding rod 23 to move relative to the oily sewage treatment plate 18 in a direction away from the partition plate 13.

[0046] Refer to Figure 2, for the convenience of repairing and cleaning the volatilization tank 2, gas collection tank 4, treatment chamber 15 and water storage chamber 16, maintenance doors can be provided on the volatilization tank 2, gas collection tank 4, treatment chamber 15 and water storage chamber 16 respectively.

[0047] The implementation principle of the embodiment of the present invention is as follows: During use, the oil-containing sewage generated by the cleaning of the boat is pumped into the volatilization tank 2 through the input pipe 3 by an external liquid suction pump body. Since the oil-containing sewage is at room temperature at this time, the adjusting plate 7 and the shape memory metal strip 8 are in the initial state, and the adjusting plate 7 closes the nozzle of the output pipe 6, so that the oil-containing sewage entering the volatilization tank 2 accumulates in the volatilization tank 2. Then, the heating pipe 32 is turned on to heat the oil-containing sewage in the volatilization tank 2, and the driving source drives the rotating rod 9 to drive the stirring blade 10 to rotate, which helps to accelerate the volatilization rate of the volatile oil in the oil-containing sewage. As the temperature of the oil-containing sewage rises, the volatile oil in the oil-containing sewage enters the gas collection tank 4 through the upper gas delivery pipe 5 for storage; when the temperature of the oil-containing sewage in the volatilization tank 2 is greater than the preset value of 50 °C, the shape memory metal strip 8 gradually deforms, and the shape memory metal strip 8 supports the adjusting plate 7, causing the adjusting plate 7 to move away from the output pipe 6, and the output pipe 6 is opened.

[0048] Then, the oil-containing sewage that has been heat-treated in the volatilization tank 2 enters the treatment chamber 15. At this time, the oil sewage treatment plate 18 is in the initial position, and the initial position of the oil sewage treatment plate 18 is on the side of the output pipe 6 close to the partition plate 13. At this time, both the spring 26 and the torsion spring 28 are in the natural state, so that the closing plate 22 blocks the filter frame 201; then the driving motor 342 is started, and the driving motor 342 drives the lead screw 341 to rotate, and the lead screw 341 drives the oil sewage treatment plate 18 to slide away from the partition plate 13. The oil sewage treatment plate 18 squeezes the oil-containing sewage, so that the oil-containing sewage generates a resisting force on the closing plate 22, pushing the closing plate 22 to rotate away from the filter frame 201 to open the through hole 19. As the oil sewage treatment plate 18 continues to move, the oil-containing sewage passes through the filter frame 201 at the through hole 19 for filtration, and then enters the side of the oil sewage treatment plate 18 close to the partition plate 13.

[0049] When all the oily sewage flows to the side of the oily sewage treatment plate 18 close to the partition plate 13, the abutting force received by the closing plate 22 decreases. Under the action of the torsion spring 28, the closing plate 22 rotates towards the direction close to the filter frame 201 to block the filter frame 201. Then, the driving motor 342 drives the lead screw 341 to rotate in the reverse direction, and the lead screw 341 drives the oily sewage treatment plate 18 to slide towards the direction close to the partition plate 13. Since the through hole 19 is in a closed state at this time, with the extrusion of the oily sewage treatment plate 18, the water in the oily sewage can enter the water storage chamber 16 through the oil-water separation membrane 14. The water body passing through the oil-water separation membrane 14 pushes the anti-backflow plate 36 to rotate away from the opening 17 to open the connecting pipe 35. Then, the water body enters the water storage chamber 16 through the connecting pipe 35 and is not easy to enter the treatment chamber 15 again. As the water body in the oily sewage gradually enters the water storage chamber 16, when most of the substances between the oily sewage treatment plate 18 and the partition plate 13 are oil, the resistance of the oily sewage treatment plate 18 sliding towards the direction close to the partition plate 13 increases. With the continuous movement of the oily sewage treatment plate 18, the oil body generates a reverse acting force on the connecting plate 24, driving the connecting plate 24 and the sliding rod 23 to move away from the partition plate 13 relative to the oily sewage treatment plate 18, compressing the spring 26. During the process that the connecting plate 24 gradually approaches the oily sewage treatment plate 18, the connecting rod 25 is pressed, so that the end of the connecting rod 25 away from the connecting plate 24 extends towards the direction away from the through hole 19. Then, the connecting rod 25 drives the mounting strip 21 to slide away from the through hole 19, gradually opening the through hole 19 by the closing plate 22. With the continuous movement of the oily sewage treatment plate 18, the oil body will enter the side of the oily sewage treatment plate 18 away from the partition plate 13 through the filter frame 201 again, thus realizing the oil-water separation, impurity removal and multi-stage treatment of the oily sewage, with good separation effect, facilitating the separate treatment of the oil, helping to protect the marine environment and avoid polluting the sea water. Since the volatile oil in the oily sewage is collected and treated before the oil-water separation, it helps to ensure the safety during the oily sewage treatment process.

[0050] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An oily wastewater treatment equipment for boat cleaning, characterized in that: The invention comprises an oily wastewater treatment tank (1), an oily wastewater volatilization mechanism and an oil-water separation mechanism. The oily wastewater volatilization mechanism comprises a volatilization box (2) arranged in the oily wastewater treatment tank (1) and a heating element arranged in the volatilization box (2). The volatilization box (2) is connected to an input pipe (3) for inputting oily wastewater. The heating element is used to heat the oily wastewater in the volatilization box (2). The oily wastewater treatment tank (1) is provided with a gas collection box (4). The volatilization box (2) and the gas collection box (4) are connected via a gas delivery pipe (5). The volatilization box (2) is connected to a gas delivery pipe (5) for delivering the heated oily wastewater to the gas collection box (4). An output pipe (6) in an oil-water separation mechanism, the oil-water separation mechanism is used to separate oil and water from oily wastewater after heating and volatilization, an adjustment plate (7) for opening and closing the pipe opening of the output pipe (6) is slidably arranged in the volatilization box (2), a memory metal strip (8) is arranged between the adjustment plate (7) and the volatilization box (2), when the temperature of the memory metal strip (8) is less than a preset value, the adjustment plate (7) abuts against the pipe opening of the output pipe (6) to close the output pipe (6), and when the temperature of the memory metal strip (8) is greater than or equal to the preset value, the memory metal strip (8) is deformed to make the adjustment plate (7) away from the output pipe (6).

2. The oily wastewater treatment equipment for boat cleaning according to claim 1 is characterized by: The regulating plate (7) is a floating plate, the density of the regulating plate (7) is greater than the density of water, and the buoyancy of the regulating plate (7) is less than the elastic force of the memory metal strip (8).

3. The oily wastewater treatment equipment for boat cleaning according to claim 2 is characterized by: A rotating rod (9) is rotatably arranged in the volatilization box (2), a plurality of stirring blades (10) are arranged on the rotating rod (9) along its circumference, and a driving source for driving the rotating rod (9) to rotate is arranged on the volatilization box (2).

4. The oily wastewater treatment equipment for boat cleaning according to claim 1 is characterized by: The oil-water separation mechanism comprises an oil-water separation box (12) arranged in an oily wastewater treatment tank (1), a partition (13) arranged in the oil-water separation box (12), an oil-water separation membrane (14) arranged on the partition (13), and a pushing assembly arranged in the oil-water separation box (12); the partition (13) divides the oil-water separation box (12) into a treatment chamber (15) and a water storage chamber (16); the treatment chamber (15) is connected to an end of an output pipe (6) away from a volatilization box (2); an opening (17) is formed on the partition (13); the oil-water separation membrane (14) covers the opening (17); the pushing assembly is arranged in the treatment chamber (15); and the pushing assembly is used to squeeze water in the oily wastewater in the treatment chamber (15) into the water storage chamber (16).

5. The oily wastewater treatment equipment for boat cleaning according to claim 4 is characterized by: The pushing assembly comprises an oily wastewater treatment plate (18) slidably arranged in a treatment chamber (15) and a driving member (34) arranged in the treatment chamber (15); the sliding direction of the oily wastewater treatment plate (18) is perpendicular to the plane where the oil-water separation membrane (14) is located; and the driving member (34) is used to drive the oily wastewater treatment plate (18) to slide in a direction close to or away from the oil-water separation membrane (14).

6. The oily wastewater treatment equipment for boat cleaning according to claim 5 is characterized by: The oily wastewater treatment plate (18) is provided with a through hole (19), a de-impurity frame (20) is arranged in the through hole (19) of the oily wastewater treatment plate (18), a mounting bar (21) is slidably arranged on a side of the oily wastewater treatment plate (18) close to the oil-water separation membrane (14), the sliding direction of the mounting bar (21) is perpendicular to the sliding direction of the oily wastewater treatment plate (18), an adjusting member for adjusting the mounting bar (21) to slide in a direction close to or away from the de-impurity frame (20) is arranged on the oily wastewater treatment plate (18), a closing plate (22) for covering or opening the de-impurity frame (20) is rotatably arranged on the mounting bar (21), the rotation axis of the closing plate (22) is perpendicular to the sliding direction of the oily wastewater treatment plate (18), and an elastic member for driving the closing plate (22) to rotate in a direction close to the oily wastewater treatment plate (18) is arranged on the mounting bar (21).

7. The oily wastewater treatment equipment for boat cleaning according to claim 6 is characterized by: The adjusting member comprises a sliding rod (23) slidably inserted into the oily wastewater treatment plate (18), a connecting plate (24) arranged on the sliding rod (23), a connecting rod (25) hinged on the connecting plate (24), and a spring (26) sleeved on the sliding rod (23); the sliding direction of the sliding rod (23) is parallel to the sliding direction of the oily wastewater treatment plate (18); the sliding rod (23) is located on a side of the mounting strip (21) close to the impurity removal frame (20); the connecting plate (24) is located at one end of the sliding rod (23) close to the oil-water separation membrane (14); and the connecting rod (25) is away from the connecting plate (2 One end of the connecting rod (25) is hinged on the mounting strip (21), the hinge axis of the connecting rod (25) is perpendicular to the sliding direction of the mounting strip (21), the distance from the connecting rod (25) to the oily wastewater treatment plate (18) increases along the direction of the mounting strip (21) approaching the connecting plate (24), one end of the spring (26) is arranged on the adjustment plate (7), and the other end is arranged on the oily wastewater treatment plate (18), the spring (26) is used to push the adjustment plate (7) to slide toward the side close to the oil-water separation membrane (14), and when the spring (26) is in a natural state, the closing plate (22) is aligned with the impurity removal frame (20).

8. The oily wastewater treatment equipment for boat cleaning according to claim 6 is characterized by: The closing plate (22) is provided with a rotating shaft (27), and the rotating shaft (27) is rotatably arranged on the mounting strip (21). The elastic member comprises a torsion spring (28) for driving the closing plate (22) to rotate in a direction close to the oily wastewater treatment plate (18). The torsion spring (28) is sleeved on the rotating shaft (27), and one end of the torsion spring (28) is arranged on the mounting strip (21), and the other end is arranged on the closing plate (22).

9. The oily wastewater treatment equipment for boat cleaning according to any one of claims 1 to 8, characterized in that: The upper surface of the output pipe (6) is higher than the bottom wall of the volatilization box (2), and a filter screen (29) is provided at the pipe opening of the output pipe (6).

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