A water recovery water tank for a ship cleaning vehicle

Abstract

The present invention relates to a water recovery water tank for a ship cleaning vehicle in the technical field of sewage treatment, which comprises a box body. The interior of the box body is divided into a recovery chamber and an equipment chamber. An air-water dual-use pump is installed in the equipment chamber. A sewage treatment mechanism is arranged at the bottom of the interior of the recovery chamber. The sewage treatment mechanism comprises an outer filter cylinder and an inner filter cylinder arranged inside the outer filter cylinder. A circulation chamber is arranged between the inner wall of the outer filter cylinder and the outer wall of the inner filter cylinder. A treatment part is arranged in the circulation chamber. The treatment part penetrates through the bottom of the inner filter cylinder and extends into the interior of the inner filter cylinder. The treatment part comprises a hollow disc arranged in the circulation chamber and a plurality of L-shaped pipes. The outer wall of the L-shaped pipe close to the outer filter cylinder is provided with a group of air injection holes. The present invention realizes the dual continuous and alternating progress of sewage filtration and aeration, and at the same time realizes the synchronous alternation of filter cylinder cleaning and filtration, ensuring the effect and efficiency of sewage treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a water recovery tank for a ship washing vehicle. Background Art

[0002] The sewage for washing ships by a ship washing vehicle mainly includes wastewater generated during the processes of washing the oil tank of the ship, flushing the ash and dust in the cabin, cabin cushion dust, oil stain, and hull paint. The composition of this kind of wastewater is complex and the chromaticity is high. Direct discharge will damage the marine ecosystem. Therefore, the sewage needs to be recovered and treated before discharge.

[0003] Currently, for sewage treatment, first, a filtering device is needed to filter the sewage, and then in-depth treatment is carried out. A major problem that urgently needs to be solved is that the filter holes of the filtering device are blocked during filtration, which affects the filtration efficiency. Currently, measures such as regular shutdown cleaning are usually taken, and this kind of measure delays the progress of the filtration work.

[0004] Secondly, in the process of sewage treatment, filtering first and then aeration is a common sewage treatment method, and aeration is also a key step in the sewage treatment process. Its main function is to inject air into the sewage to participate in the decomposition and transformation of organic matter, and ultimately achieve the purpose of purifying the sewage. However, currently, if only one set of aeration devices is set for single-time aeration work, the treatment effect on sewage is low. And if multiple sets of aeration devices are set to improve the treatment effect, it will increase the equipment purchase cost and increase the pressure on enterprises. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides the following technical solutions:

[0006] A water recovery tank for a ship washing vehicle, including a box body. The interior of the box body is divided into a recovery chamber and an equipment chamber. A water-air dual-purpose pump is installed in the equipment chamber, and a sewage treatment mechanism is provided at the bottom of the interior of the recovery chamber;

[0007] The sewage treatment mechanism includes an outer filter cylinder and an inner filter cylinder arranged inside the outer filter cylinder. A flow chamber is provided between the inner wall of the outer filter cylinder and the outer wall of the inner filter cylinder, and a treatment part is arranged in the flow chamber. The treatment part penetrates the bottom of the inner filter cylinder and extends into the interior of the inner filter cylinder. The treatment part includes a hollow disc and a plurality of L-shaped tubes arranged in the flow chamber. The plurality of L-shaped tubes are evenly distributed around the outside of the hollow disc and are communicated with the hollow disc. The outer wall of the L-shaped tube is provided with a group of air injection holes to realize the dual continuous and alternating progress of sewage filtration and aeration, and at the same time realize the synchronous alternation of filter cylinder cleaning and filtration.

[0008] Further, at least one V-shaped flow dividing plate is fixedly arranged between two adjacent L-shaped pipes. The air jet hole group includes air jet hole one, air jet hole two and air jet hole three. A plurality of air jet holes one are formed in the outer wall of the L-shaped pipe close to the outer filter cylinder, and a plurality of air jet holes two are formed in the outer wall of the L-shaped pipe close to the inner filter cylinder. A plurality of air jet holes three are formed in the outer wall of the L-shaped pipe close to the V-shaped flow dividing plate. The aperture of the air jet hole one is the same as that of the air jet hole two, the aperture of the air jet hole three is larger than that of the air jet hole one, and the gas flow rate of the air jet hole three is smaller than that of the air jet hole one and the air jet hole two.

[0009] Further, the processing part further includes a fixed hollow disk fixed to the bottom end inside the inner filter cylinder. The top end of the hollow disk is fixedly communicated with a hollow rotating rod. The top end of the hollow rotating rod penetrates through the bottom of the inner filter cylinder and extends into the inside of the fixed hollow disk. A through hole communicated with the inside of the fixed hollow disk is formed at one end of the hollow rotating rod located inside the fixed hollow disk. The hollow rotating rod is rotationally connected with the fixed hollow disk and the inner filter cylinder, and a motor for driving the hollow rotating rod to rotate is fixed to the top end of the fixed hollow disk, so as to drive the hollow disk, the L-shaped pipe and the V-shaped flow dividing plate to rotate in the circulation cavity, so as to adjust the position of the L-shaped pipe for flushing different filter holes.

[0010] Further, the top end of the inner filter cylinder protrudes outwards to cover the top end of the outer filter cylinder, and a top cover is fixedly arranged at the top end of the inner filter cylinder; a recovery pipe is arranged at the top end of the box body, and the recovery pipe extends into the inside of the recovery cavity and is arranged outside the sewage treatment mechanism. The ship washing sewage is injected into the recovery cavity through the recovery pipe, and the sewage enters the inner filter cylinder after being filtered by the outer filter cylinder and the inner filter cylinder; a water suction pipe is arranged inside the inner filter cylinder, and one end of the water suction pipe far away from the inner filter cylinder penetrates through the top cover and the box body and is connected with the inlet pipe of the water-air dual-use pump, and an air inlet hole is formed in the water suction pipe. The water suction pipe is used for simultaneously sucking the filtered sewage and gas inside the inner filter cylinder.

[0011] Further, a lower box is fixed to the bottom end of the box body, and a waterproof and breathable membrane is fixed to the inner wall of the lower box. The space inside the lower box is sequentially divided into an air cavity and a water cavity from top to bottom by the waterproof and breathable membrane. The outlet pipe of the water-air dual-use pump is communicated with the water cavity to discharge the filtered sewage and gas absorbed from the inner filter cylinder into the water cavity, and the gas passes through the waterproof and breathable membrane and enters the air cavity. The filtered sewage in the water cavity is discharged through a drain pipe installed at the bottom end of the lower box.

[0012] Further, a jet pipe is communicated with the top end of the fixed hollow disk. The end of the jet pipe far away from the fixed hollow disk penetrates through the top cover and the rear end of the box body and is communicated with the air cavity. The gas accumulates in the air cavity, so that the pressure in the air cavity increases. Then the high-pressure gas processed in the air cavity enters the processing part and is finally ejected through the air jet hole group, realizing the recycling of gas.

[0013] Further, a slag cleaning mechanism is provided at the top inside the recovery chamber. The slag cleaning mechanism includes a bracket. At both ends inside the bracket, a runner and a guide wheel are respectively provided. A steel wire rope is wound around the runner. The movable end of the steel wire rope is installed with a hook after passing around the guide wheel. A motor device for driving the runner to rotate for taking in and releasing the steel wire rope is fixed inside the bracket. And a transverse swing cylinder for driving the bracket to swing is fixed at the rear end of the bracket inside the box body, and a linear module for driving the transverse swing cylinder and the bracket to move horizontally is fixed at the rear end of the transverse swing cylinder inside the box body; a hanging ring is fixed on the outer side of the top end of the top cover. After the hanging ring is hung on the hook, the top cover, the inner filter cylinder and the treatment part can be lifted to facilitate the cleaning of the waste residue on the recovery chamber, the outer filter cylinder and the inner filter cylinder.

[0014] Further, an installation plate is fixed on one side of the bottom end of the lower box near the drain pipe. A cleaning door for facilitating the opening of the recovery chamber is installed at the front end of the box body, and a maintenance door for opening the equipment chamber is installed on one side of the box body close to the equipment chamber. A sewage pump for discharging the residual sewage in the recovery chamber is also installed in the equipment chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. While treating sewage, the gas in the sewage is pumped out, treated and recycled. The gas passes through the L-shaped pipe and is sprayed into the inner and outer filter cylinders through the air injection hole groups to wash away the impurities at the corresponding filter hole positions. The remaining filter holes still play the role of filtering sewage. By changing the position of the L-shaped pipe, when treating sewage, a part of the filter holes on the filter cylinder are cleaned while the other part of the filter holes complete the filtering process, realizing the synchronous alternation of filter cylinder cleaning and filtering, and ensuring the treatment effect and efficiency. At the same time, the gas sprayed out by the L-shaped pipe enters the sewage for the first aeration, then the sewage is first filtered through the outer filter cylinder, then the gas aerates the sewage for the second time, and then the sewage is filtered through the inner filter cylinder for the second time and enters the inner filter cylinder. At the same time, the gas enters the inner filter cylinder to aerate the sewage for the third time, realizing the double continuous alternation of filtering and aeration, and improving the sewage treatment effect.

[0017] 2. When the second aeration is carried out, the sewage flowing between the inner and outer filter cylinders is diverted by the V-shaped diversion plate and the flow rate slows down. Moreover, the flow rate of the gas sprayed out at this time decreases, improving the mixing effect of the gas and the sewage during the second aeration, enhancing the aeration effect and thus improving the treatment effect. Description of the Drawings

[0018] Figure 1 is the overall structure diagram of the present invention;

[0019] Figure 2 is the overall sectional view of the present invention;

[0020] Figure 3 is the structure diagram of the sewage treatment mechanism of the present invention;

[0021] Figure 4 Cross-sectional view of the sewage treatment mechanism of the present invention;

[0022] Figure 5 Of the present invention Figure 4 Enlarged view of part A;

[0023] Figure 6 Separate structure diagram of the outer filter cylinder, inner filter cylinder, treatment part and top cover of the present invention;

[0024] Figure 7 Cross-sectional view of the treatment part of the present invention;

[0025] Figure 8 Top-down cross-sectional view of the sewage treatment mechanism of the present invention;

[0026] Figure 9 Of the present invention Figure 8 Enlarged view of part B;

[0027] Figure 10 Structure diagram of the V-shaped flow splitter plate of the present invention.

[0028] In the drawings, the list of component names represented by each reference numeral is as follows:

[0029] 1 - box body, 2 - recovery chamber, 3 - equipment chamber;

[0030] 4 - sewage treatment mechanism, 41 - outer filter cylinder, 42 - inner filter cylinder, 43 - treatment part, 44 - water suction pipe, 45 - top cover, 46 - air injection pipe, 431 - hollow disc, 432 - L-shaped pipe, 433 - fixed hollow disc, 434 - hollow rotating rod, 435 - motor, 436 - V-shaped flow splitter plate, 4321 - air injection hole 1, 4322 - air injection hole 2, 4323 - air injection hole 3;

[0031] 5 - water-air dual-purpose pump, 6 - lower box, 61 - air chamber, 62 - water chamber;

[0032] 7 - waterproof breathable membrane, 8 - sewage pump, 9 - drain pipe, 10 - slag cleaning mechanism, 11 - bracket, 12 - runner, 13 - steel wire rope, 14 - yaw cylinder, 15 - linear module, 16 - recovery pipe, 17 - mounting plate. Detailed implementation manners

[0033] The preferred specific implementation manners of the present invention are described in detail below, and a clear and complete description is made in combination with the drawings.

[0034] Please refer to Figures 1 - 2, the present invention provides a water recovery tank for a ship cleaning vehicle, which is used to recover and treat the sewage generated by the ship cleaning vehicle when cleaning the ship. It includes a box body 1. A mounting plate 17 is fixed at the bottom end of the lower box 6 to facilitate the fixed installation of the box body 1. The interior of the box body 1 is divided into a recovery chamber 2 and an equipment chamber 3. A water-air dual-purpose pump 5 and a sewage pump 8 are installed in the equipment chamber 3. The water-air dual-purpose pump 5 is a water pump that can pump water and air. A cleaning door for facilitating the opening of the recovery chamber 2 is installed at the front end of the box body 1, and a maintenance door for opening the equipment chamber 3 is installed on one side of the box body 1 close to the equipment chamber 3 to facilitate the maintenance of the equipment in the equipment chamber 3. Sealing gaskets are installed at the cleaning door and the maintenance door to seal the box body 1.

[0035] As Figures 2 - 6 and Figure 8 shown, a recovery pipe 16 is provided at the top end of the box body 1. The recovery pipe 16 extends into the interior of the recovery chamber 2. The ship cleaning sewage is injected into the recovery chamber 2 through the recovery pipe 16. A sewage treatment mechanism 4 is provided at the bottom of the recovery chamber 2. The recovery pipe 16 is arranged outside the sewage treatment mechanism 4. The sewage treatment mechanism 4 includes an outer filter cylinder 41 and an inner filter cylinder 42 arranged inside the outer filter cylinder 41. The top end of the inner filter cylinder 42 protrudes outwards to cover the top end of the outer filter cylinder 41. A sealing gasket for sealing the top ends of the two is provided between the inner filter cylinder 42 and the outer filter cylinder 41. A top cover 45 is fixedly provided at the top end of the inner filter cylinder 42. A flow chamber is provided between the inner wall of the outer filter cylinder 41 and the outer wall of the inner filter cylinder 42. The sewage enters the inner filter cylinder 42 after being filtered by the outer filter cylinder 41 and the inner filter cylinder 42;

[0036] Moreover, a water suction pipe 44 is provided inside the inner filter cylinder 42. One end of the water suction pipe 44 away from the inner filter cylinder 42 penetrates through the top cover 45 and the box body 1 and is connected to the inlet pipe of the water-air dual-purpose pump 5. An air inlet hole is provided on the water suction pipe 44. The bottom end of the water suction pipe 44 extends into the filtered sewage liquid level in the inner filter cylinder 42, and the air inlet hole on the water suction pipe 44 is above the liquid level (a liquid level gauge can be installed in the inner filter cylinder 42 to monitor the liquid level height, and the liquid level height can be controlled by controlling the sewage inlet speed). When the water-air dual-purpose pump 5 is started, the filtered sewage and the gas in the sewage in the inner filter cylinder 42 are simultaneously sucked into the water suction pipe 44. Since the gas in the inner filter cylinder 42 is discharged, a negative pressure is formed in the inner filter cylinder 42, which improves the speed of water entering the inner filter cylinder 42 through the outer filter cylinder 41 and the inner filter cylinder 42, thereby improving the sewage treatment efficiency.

[0037] As Figures 1 - 2As shown, a lower box 6 is fixed to the bottom end of the box body 1. A waterproof and breathable membrane 7 is fixed to the inner wall of the lower box 6. The waterproof and breathable membrane 7 is a thin film material with waterproof function and capable of permeating water vapor. It is usually made of polymer materials, including but not limited to polymer microporous membranes, polyurethane membranes, polytetrafluoroethylene membranes, and polyester membranes, etc. It has a microporous structure or a special coating, enabling it to prevent water penetration while allowing gas to pass through. The waterproof and breathable membrane 7 divides the space inside the lower box 6 into an air chamber 61 and a water chamber 62 from top to bottom in sequence;

[0038] Connect the outlet pipe of the water-gas dual-use pump 5 to the water chamber 62. The filtered sewage and gas absorbed in the inner filter cylinder 42 are discharged into the water chamber 62. Water accumulates in the water chamber 62, and the filtered sewage in the water chamber 62 is discharged through a drain pipe 9 installed at the bottom end of the lower box 6. The mounting plate 17 is arranged on one side of the drain pipe 9. Gas passes through the waterproof and breathable membrane 7 and enters the air chamber 61, increasing the pressure in the air chamber 61.

[0039] Next, as Figure 4 、 Figure 6 and Figures 7 - 10 shown, a processing part 43 is arranged in the circulation chamber. The processing part 43 penetrates the bottom of the inner filter cylinder 42 and extends into the inner filter cylinder 42. The processing part 43 includes a hollow disc 431 arranged in the circulation chamber and a plurality of L-shaped pipes 432. The plurality of L-shaped pipes 432 are evenly distributed around the outer side of the hollow disc 431 and communicate with the hollow disc 431. A plurality of first jet holes 4321 are opened on the outer wall of the L-shaped pipe 432 close to the outer filter cylinder 41. A row of first jet holes 4321 on one L-shaped pipe 432 faces one row of filter holes of the outer filter cylinder 41. A plurality of second jet holes 4322 are opened on the outer wall of the L-shaped pipe 432 close to the inner filter cylinder 42. A row of second jet holes 4322 on one L-shaped pipe 432 faces one row of filter holes of the inner filter cylinder 42. The aperture of the first jet hole 4321 is the same as that of the second jet hole 4322. At least one V-shaped flow splitter 436 is fixedly arranged between adjacent two L-shaped pipes 432 through a connecting rod. A plurality of third jet holes 4323 are opened on the outer wall of the L-shaped pipe 432 close to the V-shaped flow splitter 436;

[0040] The processing unit 43 further includes a fixed hollow disk 433 fixed to the inner bottom end of the inner filter cylinder 42. The top end of the hollow disk 431 is fixedly communicated with a hollow rotating rod 434. The top end of the hollow rotating rod 434 penetrates through the bottom of the inner filter cylinder 42 and extends into the inside of the fixed hollow disk 433. One end of the hollow rotating rod 434 located inside the fixed hollow disk 433 is provided with a through hole communicated with the inside of the fixed hollow disk 433. The hollow rotating rod 434 is rotationally connected to the fixed hollow disk 433 and the inner filter cylinder 42 through a sealed bearing, and a motor 435 for driving the hollow rotating rod 434 to rotate is fixed to the top end of the fixed hollow disk 433, so as to drive the hollow disk 431, the L-shaped pipe 432, and the V-shaped flow dividing plate 436 to rotate in the circulation cavity. The motor 435 can be a stepper motor. A stepper motor is a motor that converts an electrical pulse signal into an angular displacement or a linear displacement. It receives a digital control signal (electrical pulse signal) and converts it into a corresponding angular displacement or linear displacement. It is an execution element that completes the conversion of the digital mode. As long as the number of control pulses, the frequency, and the phase sequence of the motor winding are controlled, the required rotation angle, speed, and direction can be obtained. Also, since the motor 435 is in water, the motor 435 needs to be a waterproof motor or undergo waterproof treatment.

[0041] A jet pipe 46 is communicated with the top end of the fixed hollow disk 433. One end of the jet pipe 46 away from the fixed hollow disk 433 penetrates through the top cover 45 and the rear end of the box body 1 and is communicated with the air cavity 61. The gas in the air cavity 61 enters the processing unit 43 after being processed. The processing here includes pressure boosting processing and harmful gas processing. For pressure boosting processing, technical means such as using a booster pump and gradually reducing the diameter of the jet pipe 46 to increase the gas pressure can be used. For harmful gas processing, technical means such as physical adsorption method, chemical washing method, biological treatment method, photocatalytic oxidation method, and ion purification method can be used. After removing the harmful gas, most of the remaining gas is oxygen. The above means are all commonly used existing technologies and will not be further elaborated here.

[0042] The high-pressure gas processed inside the air cavity 61 enters the processing part 43. The gas passes through the fixed hollow disc 433, the hollow rotating rod 434, and the hollow disc 431 and enters the L-shaped pipe 432, thereby realizing the recycling of the processed gas. Then the gas is sprayed through the first gas spraying hole 4321 towards the filter holes of the corresponding outer filter cylinder 41. The impurities outside the filter holes on the outer filter cylinder 41 that are sprayed with gas are flushed away, so these filter holes will not be blocked by impurities, while the remaining filter holes on the outer filter cylinder 41 function to filter sewage. Similarly, the gas is sprayed through the second gas spraying hole 4322 towards the filter holes of the corresponding inner filter cylinder 42. The impurities in the filter holes on the inner filter cylinder 42 that are sprayed with gas are flushed away, so these filter holes will not be blocked by impurities, while the remaining filter holes on the inner filter cylinder 42 function to filter sewage. Then, the motor 435 rotates a certain angle at regular intervals, driving the hollow rotating rod 434, the hollow disc 431, and the L-shaped pipe 432 to rotate, so that the L-shaped pipe 432 changes its position, flushing the impurities on other filter holes on the outer filter cylinder 41 and the inner filter cylinder 42, that is, realizing that part of the filter holes on the filter cylinder are cleaned while the other part of the filter holes complete the filtering process during the treatment, realizing the synchronous alternation of filter cylinder cleaning and filtering, and ensuring the treatment effect and efficiency;

[0043] Meanwhile, the gas sprayed from the first gas spraying hole 4321 enters the sewage outside the outer filter cylinder 41 to conduct the first aeration of the sewage. Then the sewage enters between the two L-shaped pipes 432 after being first filtered by the outer filter cylinder 41 and is shunted by the V-shaped shunt plate 436. Then the gas in the L-shaped pipe 432 is injected into the sewage after the first filtration through the third gas spraying hole 4323 to realize the second aeration. The sewage after the second aeration enters the inner part of the inner filter cylinder 42 after being second-filtered by the inner filter cylinder 42. At the same time, the gas sprayed from the second gas spraying hole 4322 enters the inner filter cylinder 42 to conduct the third aeration of the sewage after the second filtration, realizing the double continuous alternation of filtration and aeration and improving the sewage treatment effect;

[0044] In order to improve the treatment effect, the present invention designs that the aperture of the third gas spraying hole 4323 is larger than that of the first gas spraying hole 4321. Since under the condition of the same gas flow rate, the smaller the aperture, the faster the gas flow velocity, so the gas flow velocity of the third gas spraying hole 4323 is less than that of the first gas spraying hole 4321 and the second gas spraying hole 4322, so as to realize reducing the gas flow velocity during the second aeration. At the same time, the sewage after the first filtration has its flow velocity slowed down under the blockage of the V-shaped shunt plate 436, improving the mixing effect of the gas and the sewage during the second aeration and enhancing the aeration effect to improve the treatment effect;

[0045] It should be noted that in actual use, a check valve can be installed on the pipeline that needs to prevent backflow as required to prevent the backflow of water or gas. In particular, a check valve needs to be installed in the air jet holes 1 - 4321, air jet holes 2 - 4322, and air jet holes 3 - 4323. This check valve can prevent sewage from entering the L-shaped pipe 432 under normal conditions. During treatment, the high-pressure gas ejected from the L-shaped pipe 432 can push open the check valve and eject outward.

[0046] To facilitate the cleaning of the filtered waste residue, as Figures 2 - 4 and Figure 6 shown, a slag cleaning mechanism 10 is provided at the top inside the recovery chamber 2. The slag cleaning mechanism 10 includes a bracket 11. At both ends inside the bracket 11, a runner 12 and a guide wheel are respectively provided. A steel wire rope 13 is wound around the runner 12. The movable end of the steel wire rope 13 passes around the guide wheel and is equipped with a hook. A motor device for driving the runner 12 to rotate and wind and unwind the steel wire rope 13 is fixed inside the bracket 11. And inside the box body 1, a horizontal swing cylinder 14 for driving the bracket 11 to swing is fixed at the rear end of the bracket 11. A horizontal swing cylinder can be selected. A horizontal swing cylinder is a pneumatic actuator, mainly used to realize the rotation or swing movement of an object. It drives the piston to perform a swing movement in the cylinder body through the force of compressed air, thereby realizing the swing operation of the controlled object. And inside the box body 1, a linear module 15 for driving the horizontal swing cylinder 14 and the bracket 11 to move horizontally is fixed at the rear end of the horizontal swing cylinder 14. A hanging ring is fixed on the outer side of the top cover 45.

[0047] After the sewage pump 8 drains all the residual sewage in the recovery chamber 2, open the cleaning door of the box body 1. Drive the bracket 11 to swing through the horizontal swing cylinder 14 to adjust the height of the hook, and move and adjust the horizontal position of the hook through the linear module 15. After hanging the hanging ring on the hook, the motor device can be started to wind the steel wire rope 13 to lift the top cover 45, the inner filter cylinder 42, and the treatment part 43 away from the outer filter cylinder 41, and the waste residue inside the recovery chamber 2 and outside the inner filter cylinder 42 can be washed. And the outer filter cylinder 41 can be detachably installed on the inner wall of the bottom of the recovery chamber 2 to facilitate the removal of the outer filter cylinder 41 to clean the waste residue inside it.

[0048] In addition, there are at least three hooks and hanging rings to maintain the stability of the lifting of the top cover 45, the inner filter cylinder 42, and the treatment part 43.

[0049] Based on the above content and the drawings, those skilled in the art can understand and implement the present invention. In addition, any non-creative modifications made by those skilled in the art to the present invention without creative efforts still fall within the protection scope of the present invention.

Claims

1. A water recovery tank for a ship washing vehicle, comprising a tank body (1), characterized in that: The interior of the box body (1) is divided into a recovery chamber (2) and an equipment chamber (3); a water-gas dual-purpose pump (5) is installed in the equipment chamber (3); and a sewage treatment mechanism (4) is provided at the bottom of the recovery chamber (2); The sewage treatment mechanism (4) comprises an outer filter cartridge (41) and an inner filter cartridge (42) arranged inside the outer filter cartridge (41), a flow cavity is arranged between the inner wall of the outer filter cartridge (41) and the outer wall of the inner filter cartridge (42), and a treatment portion (43) is arranged in the flow cavity, and the treatment portion (43) passes through the bottom of the inner filter cartridge (42) and extends into the interior of the inner filter cartridge (42); The processing part (43) comprises a hollow disc (431) and a plurality of L-shaped tubes (432) arranged in the circulation cavity. The plurality of L-shaped tubes (432) are evenly distributed around the outer side of the hollow disc (431) and are in communication with the hollow disc (431). The outer wall of the L-shaped tube (432) is provided with a jet hole group to realize the double continuous alternation of sewage filtration and aeration, and realize the alternation and synchronization of filter cartridge cleaning and filtration. At least one V-shaped flow divider plate (436) is fixedly provided between two adjacent L-shaped tubes (432); the jet hole group comprises jet hole one (4321), jet hole two (4322) and jet hole three (4323); the L-shaped tube (432) is provided with a plurality of jet holes one (4321) on the outer wall close to the outer filter cartridge (41); the L-shaped tube (432) is provided with a plurality of jet holes two (4322) on the outer wall close to the inner filter cartridge (42); the L-shaped tube (432) is provided with a plurality of jet holes three (4323) on the outer wall close to the V-shaped flow divider plate (436); the aperture of the jet hole one (4321) is the same as the aperture of the jet hole two (4322); and the aperture of the jet hole three (4323) is larger than the aperture of the jet hole one (4321); The processing section (43) further comprises a fixed hollow disk (433) fixed to the bottom end of the inner filter cartridge (42); a hollow rotating rod (434) is fixedly connected to the top end of the hollow disk (431); the top end of the hollow rotating rod (434) penetrates the bottom end of the inner filter cartridge (42) and extends into the interior of the fixed hollow disk (433); one end of the hollow rotating rod (434) located in the fixed hollow disk (433) is provided with a through hole connected to the interior of the fixed hollow disk (433); the hollow rotating rod (434) is rotatably connected to the fixed hollow disk (433) and the inner filter cartridge (42); and a motor (435) for driving the hollow rotating rod (434) to rotate is fixed to the top end of the fixed hollow disk (433) to drive the hollow disk (431), the L-shaped tube (432), and the V-shaped diverter plate (436) to rotate in the flow chamber; The top end of the inner filter cartridge (42) protrudes outwards and is covered on the top end of the outer filter cartridge (41), and a top cover (45) is fixedly provided on the top end of the inner filter cartridge (42); A recovery pipe (16) is provided at the top of the box body (1), and the recovery pipe (16) extends into the recovery chamber (2) and is arranged outside the sewage treatment mechanism (4). Ship washing sewage is injected into the recovery chamber (2) through the recovery pipe (16), and the sewage enters the inner filter cartridge (42) after being filtered by the outer filter cartridge (41) and the inner filter cartridge (42); A water suction pipe (44) is provided in the inner filter cartridge (42); one end of the water suction pipe (44) away from the inner filter cartridge (42) passes through the top cover (45) and the housing (1) and is connected to an inlet pipe of the water-gas dual-purpose pump (5); an air inlet hole is provided on the water suction pipe (44); the water suction pipe (44) is used to simultaneously absorb the sewage and gas filtered in the inner filter cartridge (42); A lower box (6) is fixed at the bottom end of the box body (1), and a waterproof breathable membrane (7) is fixed on the inner wall of the lower box (6). The waterproof breathable membrane (7) divides the space inside the lower box (6) into an air cavity (61) and a water cavity (62) from top to bottom. The outlet pipe of the water-gas dual-purpose pump (5) is connected to the water cavity (62) to discharge the filtered sewage and gas absorbed from the inner filter cartridge (42) into the water cavity (62). The gas passes through the waterproof breathable membrane (7) and enters the air cavity (61). The filtered sewage in the water cavity (62) is discharged through a drain pipe (9) installed at the bottom end of the lower box (6); The top end of the fixed hollow disk (433) is connected to an injection pipe (46); an end of the injection pipe (46) away from the fixed hollow disk (433) passes through the top cover (45) and the rear end of the box body (1) and is connected to the air cavity (61); gas accumulates in the air cavity (61) so that the pressure in the air cavity (61) increases; then the processed high-pressure gas in the air cavity (61) enters the processing part (43) and is finally ejected through the injection hole group, thereby realizing gas recycling.

2. A water recovery tank for a ship cleaning vehicle according to claim 1, characterized in that: A slag cleaning mechanism (10) is provided at the top of the recovery chamber (2), the slag cleaning mechanism (10) comprising a bracket (11), a rotating wheel (12) and a guide wheel are provided at both ends of the bracket (11), a steel wire rope (13) is wound around the rotating wheel (12), a hook is installed at the movable end of the steel wire rope (13) after passing around the guide wheel, a motor device for driving the rotating wheel (12) to rotate to retract and release the steel wire rope (13) is fixed in the bracket (11), and a sway cylinder (14) for driving the bracket (11) to swing is fixed at the rear end of the bracket (11) in the box body (1), and a linear module (15) for driving the sway cylinder (14) and the bracket (11) to move horizontally is fixed at the rear end of the sway cylinder (14) in the box body (1); A hanging ring is fixed to the outer side of the top end of the top cover (45), and after the hanging ring is hung on the hook, the top cover (45), the inner filter cartridge (42) and the processing part (43) can be lifted to clean the waste residue on the recovery chamber (2), the outer filter cartridge (41) and the inner filter cartridge (42).

3. A water recovery tank for a ship cleaning vehicle according to claim 1, characterized in that: A mounting plate (17) is fixed to the bottom end of the lower box (6) on one side of the drain pipe (9), a cleaning door for facilitating opening of the recovery chamber (2) is installed at the front end of the box body (1), and an inspection door for opening the equipment chamber (3) is installed on the side of the box body (1) close to the equipment chamber (3), and a sewage pump (8) for discharging residual sewage in the recovery chamber (2) is also installed in the equipment chamber (3).

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