Polluted water collecting port structure of floating dock

Abstract

The invention relates to the technical field of floating dock polluted water treatment, and discloses a floating dock polluted water collecting port structure which is used for discharging water on a floating box deck of a floating dock and comprises a particle filtering well arranged in the floating box deck, and a first filtering mechanism for preliminarily filtering sewage is arranged in the particle filtering well. Through the design of the movable grating cover and the filter layer in the particle filter well, sewage on the deck of the buoyancy tank is preliminarily and efficiently filtered, large-particle impurities are effectively intercepted, and the follow-up treatment difficulty and the environmental pollution risk are reduced. Meanwhile, the operation efficiency of the whole sewage treatment system is also improved through the pretreatment mode, and real-time monitoring and intelligent backwashing of the discharge pipe are realized through combination of the backwashing mechanism and intelligent components such as a monitoring control assembly and an electric pump. The problem of blockage caused by impurity accumulation in a traditional mode is avoided, and the service life of the discharge pipe is prolonged and the stability of the whole system is improved by accurately controlling the backwashing process.

Description

Technical Field

[0001] The invention relates to the technical field of floating dock polluted water treatment, in particular to a floating dock polluted water collection port structure. Background Art

[0002] As an important facility for ship repair and maintenance, floating docks will generate a large amount of polluted water containing paint debris, metal particles, etc. during operation. With the enhancement of environmental awareness and the continuous advancement of technology, it is necessary to better treat the polluted water of floating docks to reduce pollution to the marine environment. Therefore, it is particularly important to design an efficient floating dock polluted water collection port. It can not only realize the effective collection and preliminary treatment of polluted water, reduce the risk of pollution to the marine environment, but also improve the operating efficiency and environmental protection performance of floating docks. The design and application of collection ports will become an important trend in the development of the industry.

[0003] At present, there are two common methods for treating polluted water in floating docks: one is to directly discharge polluted water into the sea through ordinary leaks. Although this method is easy to operate, it poses a serious threat to the marine ecosystem, affects biodiversity, and destroys the marine ecological balance because the polluted water is directly discharged into the sea without effective treatment; the other is to introduce polluted water into the pipe section through ordinary leaks and finally store it in a specific polluted water storage tank. Although this method reduces the direct impact of polluted water on the sea area, it is found in practice that the pipeline is often frequently blocked due to the accumulation of dust and particulate matter, which not only increases the difficulty and cost of maintenance, but also significantly reduces the efficiency of polluted water treatment. Frequent maintenance operations also affect the normal operation of the floating dock and bring unnecessary delays to ship repair and maintenance. Therefore, there is an urgent need in the prior art for a polluted water collection port design that can effectively collect polluted water to prevent it from being directly discharged into the sea and avoid pipeline blockage, so as to solve the current environmental pollution and pipeline maintenance problems in the treatment of polluted water in floating docks. Summary of the invention

[0004] The purpose of the present invention is to provide a floating dock polluted water collection port structure, which realizes the initial and efficient filtration of sewage on the pontoon deck through the movable grille cover and filter layer design in the particle filtration well, effectively intercepts large particle impurities, and reduces the difficulty of subsequent treatment and the risk of environmental pollution.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a floating dock polluted water collection port structure, which discharges water on the pontoon deck of the floating dock, including a particle filtration well arranged in the pontoon deck, in which a first filtration mechanism for preliminary filtration of sewage is arranged.

[0006] The first filtering mechanism comprises a connecting shaft arranged in the particle filtering well, and a movable grille cover for performing preliminary filtering of sewage is rotatably arranged outside the connecting shaft.

[0007] The particle filter well is also provided with a leakage prevention component for discharging sewage, and the leakage prevention component includes a discharge pipe fixed at the bottom end of the particle filter well, and a rubber plug is provided at the top end of the discharge pipe for closing the discharge pipe when the floating dock dives.

[0008] The discharge pipe is provided with a backwashing mechanism for backwashing the discharge pipe to avoid blockage thereof, and the backwashing mechanism comprises a backwashing assembly arranged in the discharge pipe.

[0009] The backwashing assembly comprises a filter tube arranged in a discharge pipe, a mounting post is rotatably arranged in the filter tube, and a guide plate is rotatably arranged outside a side of the mounting post close to the filter tube for backwashing impurities in the filter tube.

[0010] Preferably, the first filtering mechanism comprises a first handle arranged at the top end of the movable grille cover and a filtering layer arranged in the particle filtering well for filtering sewage.

[0011] Preferably, the filter layer is composed of quartz sand and fiber ball filter particles that can effectively intercept suspended particles in water.

[0012] Preferably, the backwash mechanism includes an impeller arranged outside the mounting column and utilizing water flow as power.

[0013] Preferably, the backwash mechanism also includes a monitoring and control component for monitoring the blockage condition in the discharge pipe, the monitoring and control component includes a first installation groove opened in the discharge pipe, a flow sensor for monitoring the water flow is arranged in the first installation groove, and a controller for processing and adjusting the monitoring information of the flow sensor is arranged at the bottom end of the pontoon deck.

[0014] Preferably, the backwash mechanism further comprises a connection frame arranged outside the discharge pipe, in which an electric pump connected to the controller signal is arranged, the water inlet end of the electric pump is connected to the water inlet pipe, and the water outlet end of the electric pump is connected to the water outlet pipe.

[0015] Preferably, the water inlet pipe is connected to the particle filter well on the side away from the electric pump, a return spray head for driving water flow to rotate the impeller is fixed on the side of the water outlet pipe away from the electric pump, and a second installation groove for placing the return spray head is opened in the discharge pipe.

[0016] Preferably, the backwash mechanism also includes a vibration anti-blocking component arranged outside the mounting column to knock on the discharge pipe, and the vibration anti-blocking component includes a connecting ring sleeve arranged outside the mounting column, a connecting plate is fixed outside the connecting ring sleeve, a mounting shaft is arranged in the connecting plate, and a cam is arranged outside the mounting shaft.

[0017] Preferably, the cam contacts the inner wall of the discharge pipe after rotating.

[0018] Preferably, the particle filtration well is also provided with an inspection mechanism for performing maintenance and inspection on the particle filtration well, the inspection mechanism includes a movable cover movably arranged in the particle filtration well, a sealing gasket is arranged at the bottom end of the movable cover, a second handle is arranged at the top end of the movable cover, a buckle is also arranged outside the movable cover, and a buckle matching the buckle is arranged on the side of the particle filtration well.

[0019] Compared with the prior art, the present invention provides a floating dock polluted water collection port structure, which has the following beneficial effects:

[0020] 1. The floating dock polluted water collection port structure, through the movable grille cover and filter layer design in the particle filter well, realizes the initial high-efficiency filtration of sewage on the pontoon deck, effectively intercepts large particle impurities, and reduces the difficulty of subsequent treatment and the risk of environmental pollution. At the same time, this pretreatment method also improves the operating efficiency of the entire sewage treatment system, ensuring that the sewage can meet higher environmental protection standards before being discharged, thereby protecting the marine ecological environment.

[0021] 2. The floating dock polluted water collection port structure realizes real-time monitoring and intelligent backwashing of the discharge pipe by setting up a backwashing mechanism and combining intelligent components such as monitoring and control components and electric pumps. This mechanism not only avoids the blockage problem caused by impurity accumulation in traditional methods, but also increases the service life of the discharge pipe and the stability of the entire system by controlling the backwashing process. The intelligent design reduces maintenance costs and improves operating efficiency.

[0022] 3. The floating dock polluted water collection port structure allows operators to easily open the movable cover and remove the dirt through the buckle and hasp. At the same time, the buckle and hasp lock the position of the movable cover to ensure the stability and safety of the device during maintenance. This convenient maintenance and safety guarantee design improves the overall reliability and service life of the device. When the floating dock needs to dive, a rubber plug can be installed in the discharge pipe to close the discharge pipe to effectively prevent seawater backflow, which not only ensures that sewage can be discharged smoothly when needed, but also effectively prevents the risk of seawater backflow when the floating dock dives, thereby ensuring the safety and stability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall three-dimensional structure of the floating dock pollution water collection port structure of the present invention is shown in FIG. Figure 1 .

[0024] Figure 2 The overall three-dimensional structure of the floating dock pollution water collection port structure of the present invention is shown in FIG. Figure 2 .

[0025] Figure 3 It is a schematic diagram of the disassembled structure of the first filtering mechanism in the polluted water collection port structure of a floating dock according to the present invention.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a leakage prevention component in a polluted water collection port structure of a floating dock according to the present invention.

[0027] Figure 5 It is a schematic diagram of the disassembled structure of the backwash component in the polluted water collection port structure of a floating dock according to the present invention.

[0028] Figure 6 A schematic diagram of the partial disassembly structure of the monitoring and control components in the polluted water collection port structure of a floating dock according to the present invention Figure 1 .

[0029] Figure 7 It is a schematic diagram of the partial three-dimensional structure of a monitoring and control component in a polluted water collection port structure of a floating dock according to the present invention.

[0030] Figure 8 A schematic diagram of the partial disassembly structure of the monitoring and control components in the polluted water collection port structure of a floating dock according to the present invention Figure 2 .

[0031] Fig. 9 It is a schematic diagram of the disassembled structure of a vibration anti-blocking component in a polluted water collection port structure of a floating dock according to the present invention.

[0032] Fig.10 It is a schematic diagram of the disassembled structure of the inspection mechanism in the polluted water collection port structure of a floating dock according to the present invention.

[0033] In the figure: 1, pontoon deck; 2, particle filter well; 3, first filter mechanism; 31, connecting shaft; 32, movable grille cover; 33, first handle; 34, filter layer; 4, maintenance mechanism; 41, movable cover; 42, sealing gasket; 43, second handle; 44, buckle; 45, buckle; 5, leakage prevention component; 51, discharge pipe; 52, rubber plug; 6, backwashing mechanism; 61, monitoring and control component; 611, first installation groove; 612, flow sensor; 613, controller; 614, connection frame; 615, electric pump; 616, water inlet pipe; 617, water outlet pipe; 618, second installation slot; 619, return nozzle; 62, backwash assembly; 621, filter tube; 622, mounting column; 623, impeller; 624, guide plate; 63, vibration anti-blocking assembly; 631, connecting ring sleeve; 632, connecting plate; 633, mounting shaft; 634, cam. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Example 1: Please refer to Figure 1-Figure 4 The present invention provides a technical solution: a floating dock polluted water collection port structure, which discharges water on the pontoon deck 1 of the floating dock, and includes a particle filter well 2 arranged in the pontoon deck 1, and a first filter mechanism 3 for preliminary filtering of sewage is arranged in the particle filter well 2. The particle filter well 2 carries multiple functions such as preliminary filtration of sewage, effective discharge, and anti-clogging backwashing.

[0036] The first filtering mechanism 3 includes a connecting shaft 31 disposed in the particle filtering well 2, and a movable grille cover 32 is rotatably disposed outside the connecting shaft 31 for preliminary filtering of the sewage. This design can not only effectively intercept large particle impurities, such as paint scraps, metal fragments, etc., and reduce the difficulty of subsequent treatment, but more importantly, it significantly reduces the potential pollution risk to the environment when the polluted water is directly discharged into the sea.

[0037] The particle filter well 2 is also provided with a leakage prevention component 5 for discharging sewage. The leakage prevention component 5 includes a discharge pipe 51 fixed at the bottom end of the particle filter well 2, and a rubber plug 52 is provided at the top of the discharge pipe 51 to close the discharge pipe 51 when the floating dock dives. The discharge pipe 51 is responsible for discharging the sewage that has been initially filtered. In order to prevent the backflow of seawater when the floating dock dives, a rubber plug 52 is installed at the top of the discharge pipe 51. This design not only ensures that the sewage can be discharged smoothly when needed, but also effectively prevents the risk of backflow of seawater when the floating dock dives, thereby ensuring the safety and stability of the entire system.

[0038] The discharge pipe 51 is provided with a backwashing mechanism 6 for backwashing the discharge pipe 51 to avoid blockage, and the backwashing mechanism 6 includes a backwashing assembly 62 provided in the discharge pipe 51. The blockage of the discharge pipe 51 is avoided during long-term drainage operation.

[0039] Example 2: Please refer to Figure 1-Figure 5, and combined with the first embodiment, it is further obtained that the backwashing assembly 62 includes a filter tube 621 arranged in the discharge pipe 51, a mounting column 622 is rotatably arranged in the filter tube 621, and a guide plate 624 is rotatably arranged on the outer side of the mounting column 622 close to the filter tube 621 for backwashing impurities in the filter tube 621. By rotating the mounting column 622 and the guide plate 624 in the filter tube 621, the backwashing of impurities in the filter tube 621 is achieved. When the guide plate 624 rotates with the mounting column 622, it generates water flow, and uses the impact force to wash down the impurities on the inner wall of the filter tube 621, and discharges them through the discharge pipe 51. This design not only avoids the blockage problem caused by the accumulation of impurities in the traditional method, but also significantly extends the service life of the discharge pipe 51 and reduces the maintenance cost.

[0040] Furthermore, the first filtering mechanism 3 includes a first handle 33 disposed at the top of the movable grille cover 32 and a filter layer 34 disposed at the particle filter well 2 for filtering sewage. The design of the movable grille cover 32 also takes into account the convenience of operation. The first handle 33 at the top allows the staff to easily open or close the grille cover to replace the material of the filter layer 34 for sewage filtration in a timely manner to ensure that the subsequent polluted water treatment work can be carried out normally, and the necessary maintenance and cleaning of the dirt mixed in the movable grille cover 32 can be carried out.

[0041] Furthermore, the filter layer 34 is composed of quartz sand and fiber ball filter particles that can effectively intercept suspended particles in the water. Quartz sand, with its hard texture and regular particle shape, can effectively intercept suspended particles in the water; fiber ball filter particles, with their good adsorption performance and large specific surface area, further improve the filtration effect of sewage. The combination of the two not only improves the filtration efficiency and interception capacity of the filter layer 34, but also makes the entire filtration process more stable and reliable.

[0042] Furthermore, the backwash mechanism 6 includes an impeller 623 that is arranged outside the mounting column 622 and uses water flow as power. Under the action of the water flow, the impeller 623 can use the power of the water flow to achieve rotation, so that the mounting column 622 is rotated accordingly, providing a power source for the backwash mechanism, thereby achieving energy-saving and efficient backwashing.

[0043] Example 3: Please refer to Figure 6-Figure 8, and combined with Example 1 and Example 2, it is further obtained that the backwashing mechanism 6 also includes a monitoring control component 61 for monitoring the blockage in the discharge pipe 51, and the monitoring control component 61 includes a first installation groove 611 opened in the discharge pipe 51, and a flow sensor 612 for monitoring the water flow is arranged in the first installation groove 611, and a controller 613 for processing and adjusting the monitoring information of the flow sensor 612 is arranged at the bottom of the pontoon deck 1. By opening the first installation groove 611 in the discharge pipe 51 and installing the flow sensor 612, the water flow in the discharge pipe is monitored in real time. At the same time, the controller 613 at the bottom of the pontoon deck 1 processes and adjusts according to the monitoring information of the flow sensor 612, realizing the intelligent control of backwashing. When the flow sensor 612 detects that the water flow in the discharge pipe 51 is reduced or stopped, the controller 613 will automatically start the electric pump 615 to perform the backwashing operation. This design not only improves the timeliness and accuracy of backwashing, but also makes the entire processing process more efficient and energy-saving, and reduces the operating cost.

[0044] Furthermore, the backwash mechanism 6 also includes a connection frame 614 arranged outside the discharge pipe 51, in which an electric pump 615 connected to the controller 613 signal is arranged, the water inlet end of the electric pump 615 is connected to the water inlet pipe 616, and the water outlet end of the electric pump 615 is connected to the water outlet pipe 617. The electric pump 615 extracts sewage from the particle filtration well 2 through the water inlet pipe 616, and transports the sewage to the return nozzle 619 through the water outlet pipe 617. The return nozzle 619 not only realizes the recycling of water flow, but also provides a power source for the backwash mechanism by driving the rotation of the impeller 623. This design not only realizes an energy-saving and efficient backwashing process, but also makes the entire structure more compact and reasonable, and improves space utilization.

[0045] Furthermore, the water inlet pipe 616 is connected to the particle filter well 2 on the side away from the electric pump 615, and a return spray head 619 is fixed on the side of the water outlet pipe 617 away from the electric pump 615 to drive the water flow to rotate the impeller 623, and a second mounting groove 618 for the return spray head 619 is provided in the discharge pipe 51. The electric pump 615 extracts sewage from the particle filter well 2 through the water inlet pipe 616 and transports the sewage to the return spray head 619 through the water outlet pipe 617. The return spray head 619 not only realizes the recycling of water flow, but also provides a power source for the backwashing mechanism by driving the rotation of the impeller 623. This design not only realizes an energy-saving and efficient backwashing process, but also makes the entire structure more compact and reasonable. The design of the return spray head 619 also takes into account the uniformity and impact force of the water flow. It can spray sewage onto the inner wall of the filter tube 621 at a certain speed and angle, thereby ensuring that impurities can be effectively washed down. At the same time, the spray angle and speed of the back spray head 619 can also be adjusted by the controller 613 to meet the backwashing requirements in different situations.

[0046] Example 4: Please refer to Fig. 9 , and in combination with the first, second and third embodiments, it is further obtained that the backwashing mechanism 6 also includes a vibration anti-blocking component 63 arranged outside the mounting column 622 to knock the discharge pipe 51, and the vibration anti-blocking component 63 includes a connecting ring sleeve 631 arranged outside the mounting column 622, a connecting plate 632 is fixed outside the connecting ring sleeve 631, a mounting shaft 633 is arranged in the connecting plate 632, and a cam 634 is arranged outside the mounting shaft 633. By arranging the connecting ring sleeve 631, the connecting plate 632 and the mounting shaft 633 outside the mounting column 622, and arranging the cam 634 outside the mounting shaft, the knocking effect on the discharge pipe 51 is achieved. When the cam 634 rotates with the mounting column 622, it will contact the inner wall of the discharge pipe 51 and generate a knocking force, thereby effectively preventing the accumulation of impurities and the occurrence of blockage. This design not only enhances the backwashing effect, but also improves the stability and service life of the discharge pipe 51.

[0047] Furthermore, after the cam 634 rotates, it contacts the inner wall of the discharge pipe 51. The design of the cam 634 also takes into account the uniformity and frequency of the knocking force. The size and frequency of the knocking force can be controlled by adjusting the shape and size of the cam 634 during installation and by the rotation speed of the mounting shaft 633 in actual use. This not only ensures that the impurities on the inner wall of the discharge pipe 51 can be knocked off effectively, but also avoids damage or ineffective knocking caused by excessive or insufficient knocking force.

[0048] Example 5: Please refer to Fig.10 , and combined with Example 1, Example 2, Example 3 and Example 4, it is further obtained that the particle filter well 2 is also provided with an inspection mechanism 4 for maintenance and repair of the particle filter well 2, and the inspection mechanism 4 includes a movable cover 41 movably arranged in the particle filter well 2, a sealing gasket 42 is arranged at the bottom end of the movable cover 41, a second handle 43 is arranged at the top of the movable cover 41, a buckle 44 is also arranged outside the movable cover 41, and a buckle 45 matching the buckle 44 is arranged on the side of the particle filter well 2. The sealing during the inspection process is ensured by the sealing gasket 42. At the same time, the second handle 43 at the top of the movable cover 41, the buckle 44 on the outside, and the buckle 45 matching therewith are designed so that the staff can easily open or close the movable cover 41 to carry out necessary inspection work. During the inspection process, the staff can enter the particle filter well 2 by opening the movable cover 41 to inspect and maintain the first filter mechanism 3, the filter layer 34, the leakage prevention component 5 and other components. At the same time, the working effect of the backwash mechanism 6 can be judged by observing the cleanliness and impurity accumulation of the inner wall of the discharge pipe 51, and necessary adjustments and optimizations can be made accordingly. This design not only improves the maintenance efficiency but also ensures the safety during the maintenance process.

[0049] In actual operation, the sewage accumulated on the surface of the pontoon deck 1 flows to the movable grille cover 32. This step is the initial stage of sewage treatment. The movable grille cover 32 is made of corrosion-resistant material, and its surface is densely covered with fine mesh holes, which can effectively intercept large floating objects, debris and other impurities in the sewage to prevent them from entering the subsequent treatment process, thereby reducing the burden on subsequent equipment and improving the overall treatment efficiency. This design reflects the importance of sewage source control and lays a good foundation for subsequent treatment. The filtered water flows into the particle filter well 2. The quartz sand, with its hard texture and regular particle shape, can effectively intercept suspended particles in the water; the fiber ball filter particles, with their good adsorption properties and large specific surface area, further improve the filtration effect of sewage. The combined use of the two not only improves the filtration efficiency and interception capacity of the filter layer 34, but also makes the entire filtration process more stable and reliable, and realizes secondary filtration of polluted water. Subsequently, the polluted water after secondary filtration is discharged from the pontoon deck 1 through the discharge pipe 51 to prevent environmental pollution.

[0050] During the discharge process, the flow sensor 612 continuously monitors the water flow. If the monitored flow is different from the preset value, the sensor transmits the information to the controller 613. After processing the data, the controller starts the electric pump 615. The electric pump extracts water from the particle filter well 2 through the water inlet pipe 616, discharges it through the water outlet pipe 617, and backwashes the discharge pipe 51 through the return nozzle 619. At the same time, the water flow drives the impeller 623 to rotate, driving the mounting column 622 and the guide plate 624 to rotate, backwashing the impurities in the filter tube 621 to reduce blockage.

[0051] The rotation of the mounting column 622 also drives the rotation of the connecting ring 631 and the connecting plate 632, thereby causing the cam 634 to contact the inner wall of the discharge pipe 51 and generate vibration. This physical vibration can further loosen and discharge stubborn dirt, enhancing the anti-clogging effect. This innovative design not only improves the overall performance of the system, but also reflects the pursuit of detail optimization.

[0052] When the floating dock is submerged for maintenance or repair work, the design of the movable cover 41 provides great convenience. The movable cover can be easily opened by the buckle 44 and the buckle 45, which is convenient for personnel to remove the accumulated dirt and carry out necessary cleaning or inspection work. Before the floating dock dives, a rubber plug 52 can be installed in the discharge pipe 51 to close the discharge pipe 51 to prevent seawater from backflowing and causing pollution. After the operation is completed, the movable cover 41 is closed and the sealing gasket 42 is used to ensure the sealing, and then the position of the movable cover is locked by the buckle 44 and the buckle 45 to restore the normal state of the system. This design not only improves the flexibility and operability of the system, but also ensures the safe and efficient operation of the floating dock under different working conditions.

[0053] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A floating dock polluted water collection port structure for discharging water on a pontoon deck (1) of a floating dock, comprising a particle filtering well (2) arranged in the pontoon deck (1), characterized in that: The particle filtration well (2) is provided with a first filtration mechanism (3) for preliminary filtration of sewage; The first filtering mechanism (3) comprises a connecting shaft (31) arranged in the particle filtering well (2), and a movable grille cover (32) for preliminary filtering of sewage is rotatably arranged outside the connecting shaft (31); The particle filter well (2) is also provided with a leakage prevention component (5) for discharging sewage, the leakage prevention component (5) comprising a discharge pipe (51) fixed at the bottom end of the particle filter well (2), and a rubber plug (52) for closing the discharge pipe (51) when the floating dock is submerged is provided at the top end of the discharge pipe (51); The discharge pipe (51) is provided with a backwashing mechanism (6) for backwashing the discharge pipe (51) to prevent blockage thereof, and the backwashing mechanism (6) comprises a backwashing assembly (62) provided in the discharge pipe (51); The backwashing assembly (62) comprises a filter tube (621) arranged in the discharge pipe (51), a mounting post (622) being rotatably arranged in the filter tube (621), and a guide plate (624) being rotatably arranged outside a side of the mounting post (622) close to the filter tube (621) for backwashing impurities in the filter tube (621).

2. A floating dock polluted water collection port structure according to claim 1, characterized in that: The first filtering mechanism (3) comprises a first handle (33) arranged at the top end of the movable grille cover (32) and a filtering layer (34) arranged in the particle filtering well (2) for filtering sewage.

3. A floating dock polluted water collection port structure according to claim 2, characterized in that: The filter layer (34) is composed of quartz sand and fiber ball filter particles that can effectively intercept suspended particles in water.

4. The floating dock polluted water collection port structure according to claim 1, characterized in that: The backwash mechanism (6) comprises an impeller (623) arranged outside the mounting column (622) and using water flow as power.

5. The floating dock polluted water collection port structure according to claim 1, characterized in that: The backwash mechanism (6) further comprises a monitoring control component (61) for monitoring the blockage condition in the discharge pipe (51), the monitoring control component (61) comprising a first installation groove (611) provided in the discharge pipe (51), a flow sensor (612) for monitoring the water flow rate being provided in the first installation groove (611), and a controller (613) for processing and adjusting the monitoring information of the flow sensor (612) being provided at the bottom end of the pontoon deck (1).

6. A floating dock polluted water collection port structure according to claim 5, characterized in that: The backwash mechanism (6) further comprises a connection frame (614) arranged outside the discharge pipe (51), wherein an electric pump (615) connected to a signal of the controller (613) is arranged in the connection frame (614), a water inlet end of the electric pump (615) is connected to a water inlet pipe (616), and a water outlet end of the electric pump (615) is connected to a water outlet pipe (617).

7. A floating dock polluted water collection port structure according to claim 6, characterized in that: The side of the water inlet pipe (616) away from the electric pump (615) is connected to the particle filtering well (2), and the side of the water outlet pipe (617) away from the electric pump (615) is fixed with a return spray head (619) for driving water flow to rotate the impeller (623), and a second installation groove (618) for placing the return spray head (619) is opened in the discharge pipe (51).

8. The floating dock polluted water collection port structure according to claim 1, characterized in that: The backwash mechanism (6) further comprises a vibration anti-blocking component (63) arranged outside the mounting column (622) for striking the discharge pipe (51), the vibration anti-blocking component (63) comprising a connecting ring sleeve (631) arranged outside the mounting column (622), a connecting plate (632) being fixed outside the connecting ring sleeve (631), a mounting shaft (633) being arranged in the connecting plate (632), and a cam (634) being arranged outside the mounting shaft (633).

9. A floating dock polluted water collection port structure according to claim 8, characterized in that: The cam (634) contacts the inner wall of the discharge pipe (51) after rotating.

10. The floating dock polluted water collection port structure according to claim 1, characterized in that: The particle filter well (2) is also provided with an inspection mechanism (4) for performing maintenance and inspection on the particle filter well (2), the inspection mechanism (4) comprising a movable cover (41) movably arranged in the particle filter well (2), a sealing gasket (42) being arranged at the bottom end of the movable cover (41), a second handle (43) being arranged at the top end of the movable cover (41), a buckle (44) being arranged outside the movable cover (41), and a buckle (45) matching the buckle (44) being arranged on the side of the particle filter well (2).

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