An environmental protection dredging overflow structure for port engineering

Abstract

The invention relates to the technical field of building construction equipment, and discloses an environmental protection dredging overflow structure for a port project, comprising an overflow weir and an overflow port, wherein the overflow port comprises an overflow water inlet and an overflow water outlet, wherein the overflow weir is annular, and a dirt blocking component is arranged on the outer side of the overflow weir, and the dirt blocking component comprises a permeable plate, which is cylindrical, and a plurality of dirt blocking net fixing plates are arranged on the top of the permeable plate, and the dirt blocking net fixing plates are arranged at equal intervals along the circumference of the permeable plate, and grilles are arranged between the dirt blocking net fixing plates, and the cross section of the grilles is fan-shaped. The invention blocks garbage outside the overflow port by the dirt blocking net fixing plates and the grilles, and at the same time ejects the garbage by an ejection module installed in the dirt blocking net fixing plates, so that the garbage falls into a temporary storage frame for garbage, thereby realizing self-cleaning of the garbage and reducing the labor intensity of maintenance personnel.

Description

Technical Field

[0001] The invention relates to the technical field of building construction equipment, in particular to an environmentally friendly dredging overflow structure for a port project. Background Art

[0002] Overflows are often built during the construction of water conservancy facilities such as ports and dams. Existing overflows are mostly of gated or non-gated types. The energy of water is not effectively utilized when discharging water through traditional overflows, and the upstream debris and garbage are discharged together, which can easily cause environmental pollution. Therefore, a new environmentally friendly overflow is needed. Summary of the invention

[0003] The object of the present invention is to provide a port engineering environmental protection dredging overflow structure which can block the garbage outside the overflow port through a dirt blocking net fixing plate and a grille, and at the same time eject the garbage through an ejection module installed in the dirt blocking net fixing plate, so that the garbage falls into a temporary storage frame for garbage, thereby realizing self-cleaning of the garbage and reducing the labor intensity of maintenance personnel, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a port engineering environmental dredging overflow structure, including an overflow weir and an overflow port, the overflow port including an overflow inlet and an overflow outlet, the overflow weir is annular, and a dirt retaining assembly is provided on the outer side of the overflow weir, the dirt retaining assembly includes a permeable plate, the permeable plate is cylindrical, and a plurality of dirt retaining net fixing plates are provided on the top of the permeable plate, the dirt retaining net fixing plates are arranged at equal intervals along the circumference of the permeable plate, and grilles are provided between the dirt retaining net fixing plates, and the cross-section of the grille is fan-shaped.

[0005] Furthermore, the diameter of the overflow water inlet of the overflow port gradually decreases from top to bottom, and the overflow water outlet is in a horizontal state. The overflow water inlet and the overflow water outlet are connected by a bend pipe, and a driving component is provided at the top of the bend pipe.

[0006] Furthermore, the driving assembly includes a fixed shell and a power shaft, a rotating bearing is provided on the outside of the power shaft, a fixed connecting rod fixedly connected to the fixed shell is provided on the outside of the rotating bearing, and the fixed connecting rod includes an upper connecting rod and a lower connecting rod.

[0007] Furthermore, the drive assembly also includes propeller blades, which are arranged on the outer side of the power shaft and arranged at the lower end of the lower connecting rod. It also includes a power connecting rod, which is arranged between the upper connecting rod and the lower connecting rod. The power connecting rod is arranged on the outer side of the power shaft and is arranged at equal intervals along the circumferential direction. It also includes a driving wheel, which is cylindrical. The inner side of the driving wheel is connected to the power connecting rod. The outer diameter of the driving wheel is smaller than the outer diameter of the fixed shell. It also includes a transmission belt, which is arranged on the outside of the driving wheel.

[0008] Furthermore, the driving assembly also includes a transmission assembly, which includes a transmission wheel, a transmission belt is arranged outside the transmission wheel, and also includes a transmission shaft, which is coaxial with the transmission wheel, and the transmission shaft is connected to the transmission wheel through a pin shaft, and a first permanent magnet group is arranged at the lower end of the transmission wheel.

[0009] The transmission assembly also includes a mounting base, which is rotatably matched with the transmission shaft. A second permanent magnet group is provided at the top of the mounting base. The magnetic poles of the opposite surfaces of the first permanent magnet group and the second permanent magnet group are the same. A transmission gear is connected to the top of the transmission shaft through a pin shaft.

[0010] Furthermore, the dirt blocking component also includes a rotating gear, a magnetic coupling is provided on the outside of the transmission gear, the output end of the magnetic coupling is connected to the water-permeable plate, and a water-proof cover is provided on the outside of the rotating gear.

[0011] Furthermore, the dirt-blocking net fixing plate includes a fixing plate body, which is in the shape of a curved rod, and an ejection groove communicating with the outside is opened in the middle of the fixing plate body, and an ejection assembly is arranged in the ejection groove. The ejection assembly includes an ejection base, and an electromagnet is arranged on the outer side of the ejection base, and also includes a waterproof layer made of non-metallic non-magnetic material, an ejection block is arranged on the outer side of the waterproof layer, and a third permanent magnet is arranged in the ejection block, and an electromagnetic induction switch is arranged at the bottom of the dirt-blocking net fixing plate.

[0012] Furthermore, the dirt blocking component also includes a dirt temporary storage frame, which is arranged outside the water-permeable plate, and a fourth permanent magnet is arranged on the dirt temporary storage frame near the dirt blocking component.

[0013] Furthermore, the driving assembly also includes a guide plate, which is in the shape of a paddle and has a sharp edge. The guide plate is arranged on the outside of the power shaft and above the fixed shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the garbage outside the overflow port is blocked by the dirt blocking net fixing plate and the grille to achieve the purpose of preventing the garbage from blocking the overflow port; then the garbage is ejected by the ejection base and the ejection block installed in the dirt blocking net fixing plate, so that the garbage falls into the temporary storage frame for garbage, thereby achieving self-cleaning of the garbage and reducing the labor intensity of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention;

[0016] Figure 2 For the present invention Figure 1 sectional view of

[0017] Figure 3 This is an axonometric view of the dirt retaining assembly of the present invention;

[0018] Figure 4 A top view of the dirt blocking assembly of the present invention;

[0019] Figure 5 For the present invention Figure 4 AA schematic diagram;

[0020] Figure 6 For the present invention Figure 5 A local enlarged schematic diagram of point A;

[0021] Figure 7 For the present invention Figure 5 A local enlarged schematic diagram of point B;

[0022] Figure 8 For the present invention Figure 5 A local enlarged schematic diagram of point C;

[0023] Fig. 9 This is an axonometric view of a fixed plate of a dirt retaining net of the present invention;

[0024] Fig.10 This is a cross-sectional view of a fixed plate of a dirt-blocking net of the present invention;

[0025] Fig.11 is a cross-sectional view of the ejection assembly of the present invention;

[0026] Fig.12 A top view of the ejection block of the present invention;

[0027] Fig.13 It is a schematic diagram of the projectile net of the present invention;

[0028] Fig.14 It is a schematic diagram of the temporary storage frame of waste of the present invention.

[0029] In the figure: 1, overflow inlet; 2, overflow weir; 3, overflow outlet; 4, dirt blocking assembly; 401, rotating gear; 402, magnetic coupling; 403, water-permeable plate; 404, dirt blocking net fixing plate; 405, grille; 406, fixing plate body; 407, ejection slot; 408, waterproof layer; 409, ejection block; 410, ejection base; 411, electromagnet; 412, third permanent magnet; 413, electromagnetic induction switch; 414, ejection rod; 41 5. Projectile net; 416. Fourth permanent magnet; 417. Temporary waste storage box; 5. Driving assembly; 501. Power shaft; 502. Propeller blades; 503. Fixed housing; 504. Fixed connecting rod; 505. Power connecting rod; 506. Driving wheel; 6. Transmission belt; 7. Transmission assembly; 701. Mounting base; 702. Transmission wheel; 703. Transmission shaft; 704. Transmission gear; 705. Second permanent magnet group; 706. First permanent magnet group. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-5 and Figure 8 As shown, it includes an overflow weir 2 and an overflow port, the overflow port includes an overflow inlet 1 and an overflow outlet 3, the overflow weir 2 is annular, and a dirt blocking component 4 is provided on the outer side of the overflow weir 2, the dirt blocking component 4 includes a permeable plate 403, the permeable plate 403 is cylindrical, and a plurality of dirt blocking net fixing plates 404 are provided on the top of the permeable plate 403, the dirt blocking net fixing plates 404 are arranged at equal intervals along the circumference of the permeable plate 403, and grilles 405 are provided between the dirt blocking net fixing plates 404, and the cross-section of the grille 405 is fan-shaped.

[0032] The diameter of the overflow water inlet 1 of the overflow port gradually decreases from top to bottom, and the overflow water outlet 3 is in a horizontal state. The overflow water inlet 1 and the overflow water outlet 3 are connected through a bend pipe, and a driving component 5 is provided at the top of the bend pipe.

[0033] In this embodiment, the plumb cross section of the overflow weir 2 is convex, the overflow port is hook-shaped and penetrates the overflow weir 2, the overflow weir 2 includes a dam body and an overflow platform, the overflow platform has a funnel-shaped cross section, and a spiral guide groove is provided on the outer side of the overflow water inlet 1, that is, the inner side of the overflow platform. The water entering the overflow water inlet 1 rotates under the action of the earth's rotation, and then the rotation rate of the water body is accelerated under the action of the guide groove.

[0034] At the same time, garbage and other debris in the water body will also flow into the overflow port with the water flow. When too much debris accumulates in the overflow port, the overflow port will be blocked. In order to prevent the overflow port from being blocked by debris, a dirt blocking component 4 is provided on the outer side of the overflow weir 2. The dirt blocking component 4 includes a permeable plate 403. The permeable plate 403 is cylindrical. A plurality of dirt blocking net fixing plates 404 are provided on the top of the permeable plate 403. The dirt blocking net fixing plates 404 are arranged at equal intervals along the circumference of the permeable plate 403. A grille 405 is provided between the dirt blocking net fixing plates 404. The cross section of the grille 405 is fan-shaped.

[0035] It can be understood that the overflow platform of the overflow weir 2 is surrounded by the permeable plate 403. Since the permeable plate 403 is permeable, the water passes through the permeable plate 403 and blocks the debris outside the permeable plate 403. At the same time, as time accumulates, the garbage outside the permeable plate 403 will reduce the permeability of the permeable plate 403 and affect the overflow effect.

[0036] In order to reduce the impact of garbage on the water permeability of the water permeable board 403, a barrier mesh is installed on the top of the water permeable board 403 so that debris cannot contact the water permeable board 403. At the same time, a plurality of dirt-blocking net fixing plates 404 are installed on the top of the water permeable board 403. The dirt-blocking net fixing plates 404 are arranged at equal intervals along the circumference of the water permeable board 403. Grilles 405 are provided between the dirt-blocking net fixing plates 404. The cross section of the grille 405 is fan-shaped.

[0037] It can be understood that the garbage is blocked by multiple dirt-blocking net fixing plates 404 and the grilles 405 installed between each dirt-blocking net fixing plate 404. The gaps in the grilles 405 are relatively large, so that the garbage can be blocked without affecting the water permeability of the permeable plate 403. Finally, the garbage on the outside of the grilles 405 is cleaned up by regular manual cleaning, which reduces the pollution of the garbage to the environment and avoids the blockage of the overflow port.

[0038] In one embodiment, Figure 4-8 As shown, the driving assembly 5 includes a fixed shell 503 and a power shaft 501. A rotating bearing is provided on the outside of the power shaft 501. A fixed connecting rod 504 fixedly connected to the fixed shell 503 is provided on the outside of the rotating bearing. The fixed connecting rod 504 includes an upper connecting rod and a lower connecting rod.

[0039] The driving assembly 5 also includes a propeller blade 502, which is arranged on the outer side of the power shaft 501 and arranged at the lower end of the lower connecting rod. It also includes a power connecting rod 505, which is arranged between the upper connecting rod and the lower connecting rod. The power connecting rod 505 is arranged on the outer side of the power shaft 501 and is arranged at equal intervals along the circumferential direction. It also includes a driving wheel 506, which is cylindrical. The inner side of the driving wheel 506 is connected to the power connecting rod 505. The outer diameter of the driving wheel 506 is smaller than the outer diameter of the fixed shell 503. It also includes a transmission belt 6, which is arranged on the outer side of the driving wheel 506.

[0040] In this embodiment, the flow velocity of the water body is accelerated after entering the overflow port. In order to realize energy recovery, a driving component 5 is installed in the overflow port to partially recover the energy. The driving component 5 also includes a propeller blade 502, which is arranged on the outer side of the power shaft 501 and arranged at the lower end of the lower connecting rod, and also includes a power connecting rod 505, which is arranged between the upper connecting rod and the lower connecting rod. The power connecting rod 505 is arranged on the outer side of the power shaft 501 and is arranged at equal intervals along the circumferential direction. It also includes a driving wheel 506, which is cylindrical, and the inner side of the driving wheel 506 is connected to the power connecting rod 505. The outer diameter of the driving wheel 506 is smaller than the outer diameter of the fixed shell 503, and also includes a transmission belt 6, which is arranged on the outer side of the driving wheel 506.

[0041] It can be understood that the rotating bearing of the driving assembly 5 is fixedly connected to the fixed housing 503 through the fixed connecting rod 504, so that the power shaft 501 can rotate around the central axis of the rotating bearing. Since the propeller blades 502 are installed on the outside of the power shaft 501, the propeller blades 502 are driven to rotate when the water flows through the propeller blades 502. The power shaft 501 rotates around its own axis driven by the propeller blades 502.

[0042] At the same time, a plurality of power connecting rods 505 are fixedly connected to the outside of the power shaft 501, and the other end of the power connecting rod 505 is connected to the driving wheel 506, and the driving wheel 506 is sealed and rotated with the fixed shell 503. Finally, under the action of the driving wheel 506, the transmission belt 6 on the outside of the driving wheel 506 is driven to move, thereby realizing the conversion of part of the energy of the water body and outputting the kinetic energy to the outside through the transmission belt 6.

[0043] During operation, the water drives the propeller blades 502 to rotate, thereby the propeller blades 502 drive the power shaft 501 to rotate. When the power shaft 501 rotates, it drives the driving wheel 506 to rotate and drives the transmission belt 6 to work under the action of friction.

[0044] In another embodiment, the transmission belt 6 is a transmission chain.

[0045] In one embodiment, Figure 5-8 As shown, the driving assembly 5 also includes a transmission assembly 7, which includes a transmission wheel 702, a transmission belt 6 arranged on the outside of the transmission wheel 702, and a transmission shaft 703. The transmission shaft 703 is coaxial with the transmission wheel 702, and the transmission shaft 703 is connected to the transmission wheel 702 through a pin shaft. A first permanent magnet group 706 is provided at the lower end of the transmission wheel 702.

[0046] The transmission assembly 7 also includes a mounting base 701, which is rotatably matched with the transmission shaft 703. A second permanent magnet group 705 is provided at the top of the mounting base 701. The magnetic poles of the first permanent magnet group 706 and the opposite surfaces of the second permanent magnet group 705 are the same. A transmission gear 704 is connected to the top of the transmission shaft 703 through a pin shaft.

[0047] In this embodiment, in order to transfer part of the energy converted by the driving assembly 5 to the required components for use, a transmission assembly 7 is provided in the overflow weir 2 .

[0048] It can be understood that a mounting groove for placing the mounting base 701 and the transmission wheel 702 is provided in the overflow weir 2, the mounting base 701 is screwed to the bottom surface of the mounting groove, and then the transmission wheel 702 is installed in the mounting groove. Since the first permanent magnet group 706 and the second permanent magnet group 705 with the same magnetic poles are provided on the opposite surfaces of the mounting base 701 and the transmission wheel 702, the transmission wheel 702 is suspended above the mounting base 701, thereby reducing the friction between the mounting base 701 and the transmission wheel 702, In order to reduce the energy consumption, the position of the transmission wheel 702 is limited by the transmission shaft 703 coaxially arranged with the mounting base 701 and the transmission wheel 702, so that the transmission belt 6 between the transmission wheel 702 and the driving wheel 506 is in a taut state, so that the driving wheel 506 drives the transmission wheel 702 to rotate through the transmission belt 6, and then drives the transmission shaft 703 to rotate, and finally, drives the transmission gear 704 installed on the top of the transmission shaft 703 to rotate through the transmission shaft 703.

[0049] During operation, the transmission belt 6 drives the transmission wheel 702 to rotate under the action of friction force. Since the transmission wheel 702 is pin-connected with the transmission shaft 703, the transmission shaft 703 is driven to rotate, and then the transmission gear 704 is driven to output power to the outside.

[0050] In one embodiment, Figure 8-10 As shown, the dirt blocking assembly 4 also includes a rotating gear 401 , a magnetic coupling 402 is provided outside the rotating gear 401 , an output end of the magnetic coupling 402 is connected to a water-permeable plate 403 , and a water-blocking cover is provided outside the rotating gear 401 .

[0051] The dirt-blocking net fixing plate 404 includes a fixing plate body 406, which is in the shape of a curved rod. An ejection slot 407 communicating with the outside is opened in the middle of the fixing plate body 406, and an ejection assembly is arranged in the ejection slot 407. The ejection assembly includes an ejection base 410, an electromagnet 411 is arranged on the outer side of the ejection base 410, and also includes a waterproof layer 408 made of non-metallic and non-magnetic material, an ejection block 409 is arranged on the outer side of the waterproof layer 408, a third permanent magnet 412 is arranged in the ejection block 409, and an electromagnetic induction switch 413 is arranged at the bottom of the dirt-blocking net fixing plate 404.

[0052] The dirt blocking assembly 4 further includes a dirt temporary storage frame 417 , which is disposed outside the water permeable plate 403 , and a fourth permanent magnet 416 is disposed on the dirt temporary storage frame 417 close to the dirt blocking assembly 4 .

[0053] In this embodiment, the dirt blocking component 4 still needs to be cleaned manually when blocking garbage and other debris, which is time-consuming and laborious. In order to realize automatic cleaning of garbage and debris, a magnetic coupling 402 is installed at the lower end of the water-permeable plate 403, and a rotating gear 401 is installed at the input end of the magnetic coupling 402. The rotating gear 401 is meshed with the transmission gear 704, and a water shield is provided on the outer side of the rotating gear 401;

[0054] It can be understood that the transmission gear 704 drives the rotating gear 401 to rotate, and the rotating gear 401 drives the water-permeable plate 403 to rotate through the magnetic coupling 402. Since the dirt-blocking net fixing plate 404 and the grille 405 are installed on the top of the water-permeable plate 403, the dirt-blocking net fixing plate 404 and the grille 405 rotate along with the rotation of the water-permeable plate 403.

[0055] Then, when the dirt-blocking net fixing plate 404 rotates, it drives the garbage to rotate in the same direction as the rotation direction of the water body. At the same time, since the grille 405 is in an arc shape, the garbage is more easily concentrated on the dirt-blocking net fixing plate 404.

[0056] Then, since the dirt-blocking net fixing plate 404 includes a fixing plate body 406, the fixing plate body 406 is in a curved rod shape, an ejection slot 407 communicating with the outside is opened in the middle of the fixing plate body 406, and an ejection assembly is arranged in the ejection slot 407 (the working principle of the ejection assembly has been disclosed in an active magnetic levitation electromagnetic ejector with application number CN201310005736.3), the ejection assembly includes an ejection base 410, an electromagnet 411 is arranged on the outer side of the ejection base 410, and also includes a waterproof layer 408 made of non-metallic non-magnetic material, and an ejection block 409 is arranged on the outer side of the waterproof layer 408;

[0057] like Fig.12 As shown, a third permanent magnet 412 is provided in the ejection block 409. Figure 8 , 9As shown in Figure 11, an electromagnetic induction switch installation groove is provided on the side of the fixed plate 406 close to the dirt temporary storage frame 417, a waterproof layer is provided on the inner side of the electromagnetic induction switch installation groove, and an electromagnetic induction switch 413 is provided in the electromagnetic induction switch installation groove (the electromagnetic induction switch 413 is an existing product, and its working principle has been disclosed in an electromagnetic switch with application number CN201210236896.4 or application number CN200680014383.1). The working principle of the electromagnetic induction switch 413 is based on magnetic induction. When a magnet approaches a magnetic induction element, a change in the magnetic field will cause the magnetic induction element to generate an electrical signal, thereby controlling the on and off of the circuit. A proximity sensor and a distance sensor are also installed on the outside of the electromagnetic induction switch 413; the dirt blocking component 4 also includes a dirt temporary storage frame 417, which adopts a hollow plastic frame commonly used in the market, and the dirt temporary storage frame 417 is installed and placed through a support table, such as Figure 1-2 The support platform is fixed to the overflow weir 2 by a support rod, and the support platform is in the shape of a groove with an opening facing upward. The temporary dirt storage frame 417 is arranged outside the permeable plate 403, and a fourth permanent magnet 416 is arranged on the side of the temporary dirt storage frame 417 close to the dirt blocking component 4, and the fourth permanent magnet 416 is fixed to the temporary dirt storage frame 417 by bolts;

[0058] It can be understood that, since the ejection block 409 and the ejection base 410 are slidably matched, the ejection base 410 is isolated from the outside world by the waterproof layer 408, so that the water body cannot interfere with the normal operation of the ejection base 410. When the power is turned on, the ejection block 409 moves from the lower end of the fixed plate 406 to the upper end under the action of the electromagnet 411 on the ejection base 410. When the ejection block 409 moves upward, it carries garbage and other debris upward. Since the upper part of the fixed plate 406 is parabolic, the garbage obtains a horizontal speed and is finally ejected into the temporary storage box for waste.

[0059] During operation, garbage is collected at the dirt-blocking net fixing plate 404. At the same time, a launching rod 414 is provided at the end of the launching block 409 away from the overflow water inlet 1. A spherical crown-shaped launching net 415 is provided on the launching rod. Since the launching net 415 is in the shape of a spherical crown, it is convenient for collecting garbage while preventing the garbage from escaping from the launching net 415. Then, since the water flow always moves toward the dirt-blocking component 4, and since the transmission gear 704 of the transmission component is meshed with the rotating gear 401 of the dirt-blocking component 4, the dirt-blocking net fixing plate 404 always rotates around the central axis of the overflow water inlet 1. Under the action of centrifugal force, garbage cannot be accumulated in the launching groove 407, so that most of the garbage moves into the launching net 415 under the action of centrifugal force and water flow. When the dirt-blocking net fixing plate 404 gradually approaches the temporary garbage storage frame during rotation, the electromagnetic induction switch installed on the dirt-blocking net fixing plate 404 When the ejection block 409 is moved upward, the ejection net 415 on the ejection block 409 is driven to move upward. Since the motion trajectory of the ejection block 409 is a curve, when the ejection block 409 runs to the highest position and stops, the garbage in the ejection net 415 on the ejection block 409 is ejected along a parabola. The placement position of the temporary waste storage box 417 is calculated according to relevant data (the speed and direction of the ejection net when it stops moving, the garbage continues to move under the action of inertia when the garbage leaves the ejection net, and then according to classical Newtonian mechanics), so that the garbage falls into the temporary waste storage box 417, thereby saving the labor intensity of manual garbage cleaning.

[0060] The driving assembly 5 also includes a guide plate, which is in the shape of a paddle and has a sharp edge. The guide plate is arranged outside the power shaft 501 and above the fixed shell 503.

[0061] In this embodiment, when smaller garbage flows into the overflow port, the power shaft 501 rotates to drive the guide plate to rotate and crush the smaller garbage again, thereby preventing the overflow port from being blocked by the garbage.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A port engineering environmental dredging overflow structure, comprising an overflow weir and an overflow port, wherein the overflow port comprises an overflow inlet and an overflow outlet, and is characterized in that: The overflow weir is annular, and a dirt blocking assembly is provided on the outer side of the overflow weir. The dirt blocking assembly includes a permeable plate, which is cylindrical. A plurality of dirt blocking net fixing plates are provided on the top of the permeable plate. The dirt blocking net fixing plates are arranged at equal intervals along the circumference of the permeable plate, and grilles are provided between the dirt blocking net fixing plates.

2. The port engineering environmental protection dredging overflow structure according to claim 1 is characterized by: The diameter of the overflow water inlet of the overflow port gradually decreases from top to bottom, and the overflow water outlet is in a horizontal state. The overflow water inlet and the overflow water outlet are connected through a bend pipe, and a driving component is provided on the top of the bend pipe.

3. The port engineering environmental protection dredging overflow structure according to claim 2 is characterized by: The driving assembly includes a fixed shell and a power shaft. A rotating bearing is arranged outside the power shaft. A fixed connecting rod fixedly connected to the fixed shell is arranged outside the rotating bearing. The fixed connecting rod includes an upper connecting rod and a lower connecting rod.

4. The port engineering environmental protection dredging overflow structure according to claim 3 is characterized by: The driving assembly also includes propeller blades, which are arranged on the outer side of the power shaft and arranged at the lower end of the lower connecting rod. It also includes a power connecting rod, which is arranged between the upper connecting rod and the lower connecting rod. The power connecting rod is arranged on the outer side of the power shaft and is arranged at equal intervals along the circumferential direction. It also includes a driving wheel, which is cylindrical. The inner side of the driving wheel is connected to the power connecting rod. The outer diameter of the driving wheel is smaller than the outer diameter of the fixed shell. It also includes a transmission belt, which is arranged on the outer side of the driving wheel.

5. The port engineering environmental protection dredging overflow structure according to claim 4 is characterized by: The drive assembly also includes a transmission assembly, which includes a transmission wheel, a transmission belt arranged outside the transmission wheel, and a transmission shaft, which is coaxial with the transmission wheel and connected to the transmission wheel through a pin shaft. A first permanent magnet group is arranged at the lower end of the transmission wheel.

6. The port engineering environmental protection dredging overflow structure according to claim 5 is characterized by: The transmission assembly also includes a mounting base, which is rotatably matched with the transmission shaft. A second permanent magnet group is provided at the top of the mounting base. The magnetic poles of the opposite surfaces of the first permanent magnet group and the second permanent magnet group are the same. A transmission gear is connected to the top of the transmission shaft through a pin shaft.

7. The port engineering environmental protection dredging overflow structure according to claim 6 is characterized by: The dirt-blocking assembly also includes a rotating gear, a magnetic coupling is arranged outside the rotating gear, an output end of the magnetic coupling is connected to the water-permeable plate, and a water-blocking cover is arranged outside the rotating gear.

8. The port engineering environmental protection dredging overflow structure according to claim 7 is characterized by: The dirt-blocking net fixing plate includes a fixing plate body, which is in the shape of a curved rod. An ejection slot communicating with the outside is provided in the middle of the fixing plate body, an ejection assembly is provided in the ejection slot, the ejection assembly includes an ejection base, an electromagnet is provided on the outer side of the ejection base, and also includes a waterproof layer made of non-metallic non-magnetic material, an ejection block is provided on the outer side of the waterproof layer, a third permanent magnet is provided in the ejection block, and an electromagnetic induction switch is provided at the bottom of the dirt-blocking net fixing plate.

9. The port engineering environmental protection dredging overflow structure according to claim 8, characterized in that: The dirt blocking component also includes a dirt temporary storage frame, which is arranged outside the water permeable plate, and a fourth permanent magnet is arranged on the dirt temporary storage frame near the dirt blocking component.

10. The port engineering environmental protection dredging overflow structure according to claim 9, characterized in that: The driving assembly also includes a guide plate, which is in the shape of a paddle and has a sharp edge. The guide plate is arranged outside the power shaft and above the fixed shell.

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