Fish-shaped environmental dredging and desilting suction head

Abstract

This invention provides a fish-shaped environmentally friendly dredging and sludge removal suction head, comprising a suction head cover, an adjustable suction port, a delivery pipeline, a sludge pump, a measurement system, an analysis and control system, and various connecting components. The overall shape of the suction head mimics the structure of a fish's body, with the suction port resembling a fish's mouth that can be autonomously adjusted to change the suction negative pressure and suction range. The sludge pump and pipeline are arranged inside the fish body, and the pipeline is equipped with flow and concentration sensors. By mimicking the feeding behavior of fish, it achieves efficient and intelligent sludge removal operations. This invention enables environmentally friendly sludge removal; the fish-like shape minimizes water disturbance, and the tilted arrangement of the suction head effectively reduces the contact area with the sludge surface. By comprehensively considering information such as water turbidity, suction concentration, suction port negative pressure, and pipeline flow, it autonomously adjusts the suction port angle, valve opening, and sludge pump speed to ensure maximum concentration suction while maintaining acceptable water turbidity levels. This achieves a balance between high concentration and low disturbance, providing a green solution for environmentally friendly sludge removal in water environment management.

Description

Technical Field

[0001] This invention relates to the field of dredging equipment technology, and more specifically, to a fish-shaped environmentally friendly dredging suction head. Background Technology

[0002] Traditional dredging heads are basically fixed in shape, which cannot adapt to the dynamic dredging process with complex changes in soil quality, terrain, hydrodynamic conditions and other factors. Therefore, the effect of controlling the spread of silt is unsatisfactory.

[0003] Dredging operations aim for high concentrations and high yields, requiring suction heads to be close to the bed surface to maintain strong suction capacity. However, as the distance from the mud surface decreases and the amount of disturbed mud increases, the difficulty of suppressing sludge diffusion rises sharply. Increasing suction concentration and suppressing sludge diffusion seem to be an irreconcilable paradox in the environmental dredging field, and operations currently face a difficult choice between the two. The core key to solving this problem lies in effectively balancing mud diffusion and suction concentration. Sludge diffusion originates from two sources: firstly, the turbulent flow caused by the movement of the dredging head along the bottom; and secondly, the inability of the suction range and mud volume to effectively cover the disturbance caused by the dredging head.

[0004] Analysis of fish feeding processes near riverbeds reveals that: to avoid disturbing prey, fish exert extreme control over water turbulence; at the moment of feeding, they generate immense suction to rapidly draw prey into their mouths; and when feeding on microorganisms on the riverbed, the disturbance to the sediment is minimal. These characteristics perfectly meet the dual core requirements of an environmentally friendly dredging suction head. Its streamlined shape is a crucial factor, and slow-motion analysis of its feeding process shows that the dynamic changes in its mouth are key to simultaneously ensuring minimal disturbance and high suction power. Therefore, a fish-shaped environmentally friendly dredging suction head is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the problems raised in the existing background technology. To achieve the above-mentioned objective, this invention provides the following technical solution: a fish-shaped environmentally friendly dredging and silt removal suction head, comprising a suction head cover, an adjustable suction port, a sludge pump, a delivery pipeline, a measurement system, and an analysis and control system; the suction head cover has a streamlined, fish-like body structure with a hollow mounting cavity inside, and is installed at a certain angle to the horizontal mud surface; the adjustable suction port is located at the front end of the suction head cover and is used to suction bottom sludge; the sludge pump and the delivery pipeline are arranged inside the suction head cover; the measurement system is used to monitor water turbidity, suction flow rate, sludge concentration, and pipeline pressure in real time; the analysis and control system dynamically adjusts the opening and angle of the adjustable suction port and the rotation speed of the sludge pump based on the data collected by the measurement system.

[0006] As a preferred technical solution of the present invention, the suction head cover has a two-section structure, including a front cover and a rear main body, which are connected by fasteners and together form the hollow mounting cavity.

[0007] As a preferred embodiment of the present invention, the adjustable suction port is a bent tube structure with a hinge joint at its rear end, and is connected to the inner wall of the suction head cover through a linkage adjustment mechanism. The linkage adjustment mechanism includes an adjusting electric cylinder, a fixed bracket, and a connecting rod. The adjusting electric cylinder is installed on the inner wall of the suction head cover through the fixed bracket, and its piston rod front end is connected to the hinge joint through the connecting rod. Two to four guide pulleys are evenly distributed circumferentially between the outer surface of the adjustable suction port and the inner surface of the suction head cover. The wheel surface of each guide pulley is tangent to the outer surface of the adjustable suction port, and the support is fixed on the inner wall of the suction head cover to guide the adjustable suction port to achieve synchronous adjustment of angle and opening under the drive of the electric cylinder.

[0008] As a preferred technical solution of the present invention, the suction pump is fixed to the inner wall of the middle part of the suction head cover by a support; its suction end is connected to the suction pipe and its output end is connected to the output pipe; the front end of the suction pipe is embedded in the adjustable suction port, and its outer surface is in close contact with the inner wall of the adjustable suction port and smoothly transitions to the inlet of the pump; the output pipe is an S-shaped bend that extends radially from the pump outlet to the tail of the suction head, and a support flange is provided at the key turning point. The support flange is fixed to the reinforcing rib plate inside the suction head cover by high-strength bolts.

[0009] As a preferred technical solution of the present invention, the conveying pipeline is fixed on the inner wall of the suction head cover by multiple connecting brackets to reduce vibration and impact during the conveying process; the end of the output pipe is connected to an elliptical flange, the center of which is connected to the output pipe, and four bolt holes are evenly distributed on it for sealing connection with the external conveying pipeline.

[0010] As a preferred technical solution of the present invention, the measurement system includes a turbidity observation eye, a flow meter, a density meter, and a pressure sensor; the turbidity observation eyes are symmetrically arranged on both sides of the suction head cover corresponding to the "fisheye" positions, and each turbidity observation eye is composed of a transparent hemispherical organic glass cover, with a rotation adjustment mechanism inside. The rotation adjustment mechanism includes a servo motor, a gear transmission group, and a linkage rod. The turbidity meter and the ultrasonic probe are mounted on the linkage rod and can rotate within the hemispherical space under the drive of the servo motor, realizing all-round monitoring of the turbidity of the surrounding water, topography, and obstacles.

[0011] As a preferred technical solution of the present invention, the flow meter and the density meter are installed on the output pipe through a flange; the pressure sensor is respectively set on the suction pipe, the output pipe and the inner side of the suction head cover, and is connected by a welded pipe thread through a hole opened in the pipe wall or the cover.

[0012] As a preferred technical solution of the present invention, the analysis and control system is communicatively connected to the turbidity meter, ultrasonic probe, flow meter, density meter and pressure sensor, and is used to receive and comprehensively analyze water turbidity, mud concentration, pipeline flow and suction port negative pressure data, and generate control commands accordingly to dynamically adjust the angle and opening of the adjustable suction port and the speed of the suction mud pump, so as to maximize the suction concentration and prevent pipeline blockage while meeting the environmental water turbidity limit.

[0013] As a preferred technical solution of the present invention, the suction head cover is installed at an angle of about 60° with the mud surface, so that the adjustable suction port is close to the mud surface to form an effective negative pressure zone, while significantly reducing the disturbance area of ​​the bottom mud by the suction head.

[0014] As a preferred technical solution of the present invention, the number of guide pulleys is three, which are evenly distributed around the adjustable suction port to ensure that the adjustable suction port moves smoothly and without jamming during the angle adjustment process.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention provides a fish-shaped environmentally friendly dredging and sludge removal suction head. By mimicking the feeding behavior of fish, it can achieve efficient and intelligent sludge removal operations. Using this invention for environmentally friendly sludge removal, the fish-like shape minimizes water disturbance, and the tilted arrangement of the suction head effectively reduces the contact area with the mud surface. It autonomously adjusts the suction port angle, valve opening, and mud pump speed based on information such as water turbidity, suction concentration, suction port negative pressure, and pipeline flow rate. This aims to ensure maximum concentration suction while maintaining acceptable water turbidity levels, thus achieving a perfect balance between high concentration and low disturbance, providing a green solution for environmentally friendly sludge removal in water environment management. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure provided by the present invention; Figure 2 This is a schematic diagram of the main view structure provided by the present invention; Figure 3 This is a schematic diagram of the rotation adjustment mechanism provided by the present invention; Figure 4 This is a side view structural diagram provided by the present invention; Figure 5 A partial structural diagram of the hinge joint provided by the present invention.

[0017] The image shows: 1. Suction head cover; 2. Adjustable suction port; 201. Hinge joint; 3. Delivery pipeline; 4. Sludge pump; 5. Electric cylinder; 501. Electric cylinder piston rod; 6. Densitometer; 7. Flow meter; 8. Pressure sensor; 9. Rotation adjustment mechanism; 901. Servo motor; 902. Gear transmission group; 903. Linkage rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] Example 1: A fish-shaped environmentally friendly dredging and sludge removal suction head. The overall shape of the suction head resembles a fish body, and the suction port, similar to a fish mouth, can be autonomously adjusted to change the suction negative pressure and suction range. The sludge pump 4 and pipeline are arranged inside the fish body. The pipeline is equipped with flow and concentration sensors, and a dynamic turbidity monitoring probe is installed at the fish eye. By integrating information such as turbidity, suction concentration, and flow rate, the suction head makes decisions for autonomous adjustment of the fish mouth angle. The head includes: a suction head cover 1, an adjustable suction port 2, a delivery pipeline 3, a sludge pump 4, a measurement system, an analysis and control system, and various connecting components.

[0021] The suction head cover 1 features a streamlined, fish-like design, intended to mimic the low-drag characteristics of fish moving underwater. The cover 1 employs a two-section design, consisting of a front cover and a rear main body connected by fasteners, forming a spacious hollow mounting cavity for related equipment and instruments. The entire suction head cover 1 is installed at approximately a 60° angle to the mud surface. This specific angle ensures sufficient negative pressure from the suction port while minimizing disturbance to the bottom mud at the bottom of the suction head.

[0022] The adjustable suction port 2 is located at the front end of the suction head cover 1 and consists of a bent tube section. It is connected to the inner surface of the suction head cover 1 via a linkage adjustment mechanism. The linkage adjustment mechanism includes an adjusting electric cylinder 5, a fixed bracket, and a connecting rod. A hinge joint 201 is located at the rear of the adjustable suction port 2. This hinge joint 201 is connected to the front end of the electric cylinder piston rod 501 via a connecting rod. The electric cylinder 5 is mounted on the inner wall of the suction head cover 1 via the fixed bracket. Simultaneously, 2-4 guide pulleys are evenly distributed around the area between the outer surface of the adjustable suction port 2 and the inner surface of the suction head cover 1. The surfaces of the guide pulleys are tangent to the outer surface of the adjustable suction port 2, and their supports are mounted on the inner surface of the suction head cover 1. When the adjusting electric cylinder 5 receives a control command, it drives the adjustable suction port 2 to move along the guide pulleys through the extension and retraction of the piston rod, thereby achieving dynamic adjustment of the suction port opening and suction angle.

[0023] The sludge pump 4 is mounted on the inner wall of the suction head cover 1 using a support. It consists of a suction pipe and an output pipe connected to its front and rear ends, respectively. The suction pipe is installed between the adjustable suction head and the sludge pump inlet. Its front end is embedded within the adjustable suction head and is a curved pipe whose outer surface fits against the inner surface of the adjustable suction inlet 2, smoothly transitioning to the sludge pump inlet to ensure minimal flow resistance. The output pipe connects the sludge pump outlet to the fish-shaped tail outlet. To avoid the sludge pump, an S-shaped bend is used to transition from radial to axial flow, avoiding energy loss and sludge deposition caused by 90° right-angle turns. Support flanges are provided at key bends in the pipeline for easy maintenance and replacement of parts, and are fixed to the reinforcing ribs inside the suction head cover 1 with high-strength bolts. To resist impacts and vibrations during transport, several connecting brackets are provided on the inner wall of the suction head cover 1 to secure the pipeline.

[0024] The end of the pipeline is connected to the center of the elliptical flange at the end of the suction head. There are four bolt holes evenly distributed on the flange. The flange is sealed to the external delivery pipeline by high-strength bolts to ensure that the dredging slurry is delivered without leakage under pressure.

[0025] The measurement system mainly includes a turbidity observation eye, a flow meter 7, a density meter 6, and a pressure sensor 8.

[0026] The turbidity observation eye is symmetrically installed on both sides. Two transparent hemispherical organic glass are installed at the fish-eye of the fish-shaped suction head cover 1. An internal rotation adjustment mechanism 9 is designed, which consists of gear transmission and linkage rod 903 mechanism. The turbidity meter and ultrasonic probe are installed on the linkage mechanism. The gear set is driven to rotate by the servo motor 901, which can drive the measuring instrument to rotate in spatial angle within the hemispherical range, thereby realizing all-round monitoring of the turbidity of the surrounding water body, the surrounding terrain and obstacle information.

[0027] Flow meter 7 and density meter 6 are installed on the output pipe and connected to the pipeline via flanges. Pressure sensor 8 is installed on the suction pipe, output pipe, and inside the suction port cover, respectively, and connected via pipe threads welded through openings in the pipe wall or inside the cover. The analysis and control system aggregates and comprehensively analyzes information from the turbidity meter, ultrasonic probe, flow meter 7, density meter 6, and pressure sensor 8. Based on this analysis, it dynamically adjusts the mud pump speed and suction port opening, thereby changing the suction range, negative pressure, and flow rate to prevent pipeline blockage and increase the suction concentration while ensuring that the environmental water body is not disturbed.

[0028] This invention mimics the feeding behavior of fish to achieve efficient and intelligent dredging operations. Using this invention for environmentally friendly dredging, the fish-like shape minimizes water disturbance, and the tilted suction head effectively reduces the contact area with the mud surface. By integrating information such as water turbidity, suction concentration, suction port negative pressure, and pipeline flow rate, the invention autonomously adjusts the suction port angle, valve opening, and mud pump speed to ensure maximum concentration suction while maintaining turbidity standards. This achieves a perfect balance between high concentration and low disturbance, providing a green solution for environmentally friendly dredging in water pollution control.

[0029] Example 2; A fish-shaped environmentally friendly dredging and silt removal suction head includes a suction head cover 1, an adjustable suction port 2, a sludge pump 4, a delivery pipeline 3, a measurement system, and an analysis and control system. The suction head cover 1 has a streamlined, fish-like structure with a hollow installation cavity inside, and is installed at an angle of 55°–65° to the horizontal mud surface. The adjustable suction port 2 is located at the front end of the suction head cover 1 and is used to suction bottom sludge. The sludge pump 4 and the delivery pipeline 3 are arranged inside the suction head cover 1. The measurement system is used to monitor water turbidity, suction flow rate, sludge concentration, and pipeline pressure in real time. The analysis and control system dynamically adjusts the opening and angle of the adjustable suction port 2 and the rotation speed of the sludge pump 4 based on the data collected by the measurement system.

[0030] The suction head cover 1 has a two-section structure, including a front cover and a rear main body, which are connected by fasteners and together form a hollow mounting cavity.

[0031] The adjustable suction port 2 is a bent tube structure with a hinge joint 201 at its rear end, which is connected to the inner wall of the suction head cover 1 through a linkage adjustment mechanism. The linkage adjustment mechanism includes an adjusting electric cylinder 5, a fixed bracket, and a connecting rod. The adjusting electric cylinder 5 is installed on the inner wall of the suction head cover 1 through the fixed bracket, and the front end of its piston rod is connected to the hinge joint 201 through the connecting rod. Two to four guide pulleys are evenly distributed circumferentially between the outer surface of the adjustable suction port 2 and the inner surface of the suction head cover 1. The wheel surface of each guide pulley is tangent to the outer surface of the adjustable suction port 2. The support is fixed on the inner wall of the suction head cover 1 to guide the adjustable suction port 2 to achieve synchronous adjustment of angle and opening under the drive of the electric cylinder 5.

[0032] The suction pump 4 is fixed to the inner wall of the middle part of the suction head cover 1 by a support; its suction end is connected to the suction pipe and its output end is connected to the output pipe; the front end of the suction pipe is embedded in the adjustable suction port 2, and its outer surface is in close contact with the inner wall of the adjustable suction port 2 and smoothly transitions to the inlet of the suction pump; the output pipe is an S-shaped bend that extends from the outlet of the suction pump in a radial direction to the tail of the suction head, and a support flange is provided at the key turning point. The support flange is fixed to the reinforcing rib plate inside the suction head cover 1 by high-strength bolts.

[0033] The conveying pipeline 3 is fixed on the inner wall of the suction head cover 1 by multiple connecting brackets to reduce vibration and impact during the conveying process; an elliptical flange is connected to the end of the output pipe, the center of which is connected to the output pipe, and four bolt holes are evenly distributed on it for sealing connection with the external conveying pipeline.

[0034] The measurement system includes a turbidity observation eye, a flow meter 7, a density meter 6, and a pressure sensor 8. The turbidity observation eyes are symmetrically arranged on both sides of the suction head cover 1, corresponding to the "fisheye" positions. Each turbidity observation eye is composed of a transparent hemispherical organic glass cover and has a rotation adjustment mechanism 9 inside. The rotation adjustment mechanism 9 includes a servo motor 901, a gear transmission group 902, and a linkage rod 903. The turbidity meter and the ultrasonic probe are mounted on the linkage rod 903 and can rotate in the hemispherical space under the drive of the servo motor 901, so as to realize all-round monitoring of the turbidity of the surrounding water, topography, and obstacles.

[0035] The flow meter 7 and the density meter 6 are mounted on the output pipe via flanges; the pressure sensor 8 is respectively located inside the suction pipe, the output pipe and the suction head cover 1, and is connected by welding pipe threads through holes opened in the pipe wall or the cover.

[0036] The analysis and control system is connected to a turbidity meter, an ultrasonic probe, a flow meter 7, a density meter 6, and a pressure sensor 8. It is used to receive and comprehensively analyze water turbidity, mud concentration, pipeline flow rate, and suction port negative pressure data, and generate control commands accordingly. It dynamically adjusts the angle and opening of the adjustable suction port 2 and the speed of the suction mud pump 4 to maximize the suction concentration and prevent pipeline blockage while meeting the environmental water turbidity limit.

[0037] The suction head cover 1 is installed at an angle of about 60° to the mud surface, so that the adjustable suction port 2 is close to the mud surface to form an effective negative pressure zone, while significantly reducing the disturbance area of ​​the bottom mud at the bottom of the suction head.

[0038] There are three guide pulleys, which are evenly distributed around the adjustable suction port 2 to ensure that the adjustable suction port 2 moves smoothly and without jamming during angle adjustment.

[0039] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

[0040] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A fish-shaped, environmentally friendly dredging and sludge removal suction head, characterized in that: The system includes a suction head cover (1), an adjustable suction port (2), a sludge pump (4), a delivery pipeline (3), a measurement system, and an analysis and control system. The suction head cover (1) has a streamlined, fish-like structure with a hollow mounting cavity inside, and is installed at a certain angle to the horizontal mud surface. The adjustable suction port (2) is located at the front end of the suction head cover (1) and is used to suction bottom mud. The sludge pump (4) and the delivery pipeline (3) are arranged inside the suction head cover (1). The measurement system is used to monitor water turbidity, suction flow rate, pipeline mud concentration, and pipeline pressure. The analysis and control system dynamically adjusts the opening of the adjustable suction port (2) and the rotation speed of the sludge pump (4) based on the data collected by the measurement system.

2. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1, characterized in that: The suction head cover (1) has a two-section structure, including a front cover and a rear main body, which are connected by fasteners and together form the hollow mounting cavity.

3. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1 or 2, characterized in that: The adjustable suction port (2) is a bent tube structure with a hinge joint (201) at its rear end, and is connected to the inner wall of the suction head cover (1) through a linkage adjustment mechanism. The linkage adjustment mechanism includes an adjusting electric cylinder (5), a fixed bracket and a connecting rod. The adjusting electric cylinder (5) is installed on the inner wall of the suction head cover (1) through the fixed bracket, and the front end of its piston rod (501) is connected to the hinge joint (201) through the connecting rod. There are 2-4 guide pulleys evenly distributed circumferentially between the outer surface of the adjustable suction port (2) and the inner surface of the suction head cover (1). The wheel surface of each guide pulley is tangent to the outer surface of the adjustable suction port (2). The support is fixed on the inner wall of the suction head cover (1) to guide the adjustable suction port (2) to achieve synchronous adjustment of angle and opening under the drive of the electric cylinder (5).

4. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1, characterized in that: The suction pump (4) is fixed to the inner wall of the suction head cover (1) by a support; its suction end is connected to the suction pipe and its output end is connected to the output pipe; the front end of the suction pipe is embedded in the adjustable suction port (2), and its outer surface is attached to the inner wall of the adjustable suction port (2) and smoothly transitions to the inlet of the suction pump; the output pipe is an S-shaped bend that extends from the outlet of the suction pump in a radial direction to the tail of the suction head, and a support flange is provided at the key turning point. The support flange is fixed to the reinforcing rib plate inside the suction head cover (1) by high-strength bolts.

5. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 4, characterized in that: The conveying pipeline (3) is fixed on the inner wall of the suction head cover (1) by multiple connecting brackets to reduce vibration and impact during the conveying process; the end of the output pipe is connected to an elliptical flange, the center of which is connected to the output pipe, and four bolt holes are evenly distributed on it for sealing connection with the external conveying pipeline.

6. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1, characterized in that: The measurement system includes a turbidity observation eye, a flow meter (7), a density meter (6), and a pressure sensor (8). The turbidity observation eyes are symmetrically arranged on both sides of the suction head cover (1) at the corresponding fisheye positions. Each turbidity observation eye is made of a transparent hemispherical organic glass cover and has a rotation adjustment mechanism (9) inside. The rotation adjustment mechanism (9) includes a servo motor (901), a gear transmission group (902), and a linkage rod (903). The turbidity meter and the ultrasonic probe are mounted on the linkage rod (903) and rotate in the hemispherical space under the drive of the servo motor (901).

7. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 6, characterized in that: The flow meter (7) and the density meter (6) are mounted on the output pipe via flanges; the pressure sensor (8) is respectively located inside the suction pipe, the output pipe and the suction head cover (1), and is connected by a welded pipe thread through holes opened in the pipe wall or the cover.

8. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1, characterized in that: The analysis and control system is communicatively connected to the turbidity meter, ultrasonic probe, flow meter (7), density meter (6) and pressure sensor (8) to receive and comprehensively analyze water turbidity, mud concentration, pipeline flow rate and suction port negative pressure data.

9. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 1, characterized in that: The suction head cover (1) is installed at an angle of about 60° to the mud surface, so that the adjustable suction port (2) is close to the mud surface to form a negative pressure zone.

10. The fish-shaped environmentally friendly dredging and sludge removal suction head according to claim 3, characterized in that: The number of guide pulleys is 3, which are evenly distributed around the adjustable suction port (2).

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