River ecological restoration sewage treatment equipment

Abstract

The invention discloses river ecological restoration sewage treatment equipment, relates to the technical field of sewage treatment, and aims to solve the technical problem of insufficient pretreatment capacity during hard sludge treatment in the prior art. The river ecological restoration sewage treatment equipment comprises a ship body, a supporting arm with a telescopic structure, an adjusting frame and a sludge suction mechanism; the silt suction mechanism comprises a main body silt suction assembly and a cutting assembly. Bionic form switching is achieved through axial sliding of the multiple layers of hard rings, in the gathering process, a spiral channel is formed by the inclined face, the suction inlet and the check block, sludge is sucked in an efficient rotational flow mode, and the problems that traditional equipment is low in suction efficiency and prone to being blocked are solved; a conical cavity is formed during unfolding, a hardened riverbed is effectively disturbed and stripped, and the problem that pretreatment is not thorough is solved; and the cutting module can automatically switch a high-pressure crushing mode and a rotational flow suction assisting mode according to the hardness of the sludge, and cooperates with the main body assembly to convert cutting energy into suction assisting power, so that efficient, continuous and self-adaptive cleaning of the sludge under different working conditions is realized.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment device for river ecological restoration. Background Technology

[0002] In the fields of river ecological restoration and wastewater treatment, traditional dredging equipment (such as cutter suction and rake suction) generally suffers from poor adaptability to complex working conditions. When faced with highly viscous sludge containing impurities, traditional suction ports are prone to clogging, leading to operational interruptions and severely impacting dredging efficiency. Furthermore, when dealing with hard or compacted riverbeds, the equipment lacks effective pretreatment methods, making it difficult to completely remove attached materials, resulting in incomplete dredging. In addition, traditional equipment has relatively limited functionality, making it difficult to maintain efficient operation in continuously changing conditions from hard to loose, and from shallow to deep layers, severely restricting the overall effectiveness of river ecological restoration.

[0003] In existing technologies, dredging operations typically employ a separate operation mode of "cutting and crushing first, then pumping and conveying." This mode results in a disconnect between the cutting and pumping processes in terms of time and space. The energy generated by cutting (such as high-pressure water jets) is not effectively converted into pumping power, leading to energy waste. Furthermore, due to the lack of an intelligent adaptive adjustment mechanism, the equipment cannot automatically adjust its operation mode based on real-time changes in sludge hardness. This results in either insufficient cutting force or excessive energy consumption when dealing with sludge of varying hardness, failing to achieve efficient energy utilization.

[0004] Existing technologies face a systemic technical challenge: how to achieve efficient, continuous, and adaptive dredging operations. This requires equipment not only to possess powerful crushing capabilities but also anti-clogging suction structures and intelligent systems capable of automatically switching operating modes based on working conditions. However, traditional mechanical structure designs are often limited to a single function, easily leading to incomplete dredging and discontinuous operations, failing to meet the high adaptability requirements of modern river ecological restoration. Therefore, we propose a wastewater treatment device for river ecological restoration. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater treatment device for river ecological restoration, so as to solve the technical problem of insufficient pretreatment capacity in the existing technology when treating hard silt.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sewage treatment equipment for river ecological restoration, comprising a hull, a support arm with a telescopic structure, an adjustment frame and a sludge suction mechanism, wherein the sludge suction mechanism comprises a main sludge suction component and a cutting component; The main suction assembly includes a gun housing fixedly mounted on an adjustment frame, a suction gun arranged inside the gun housing, and several rigid rings. The suction gun consists of a gun body and a telescopic tube with a rigid structure. Several hard rings are sequentially fitted from the outside to the inside and can slide along the gun shell axis, so that the lower end faces of the hard rings can be brought together to form a plane or unfolded to form a cone. The rigid ring arranged on the inner side is fitted onto the gun body surface of the suction gun; Each of the rigid rings has an inclined surface and a suction port on its lower surface, with the suction port located on the inclined surface. Several rigid rings are also equipped with a stop block at their bottom. When several rigid rings come together, the inclined surface of their lower surface, the suction port, and the baffle form a spiral channel; When several rigid rings are unfolded, they can form a conical cavity through the inclined plane; When several hard rings periodically switch between converging and expanding, they can form the expansion and contraction movements of a fish's mouth as it feeds. The cutting assembly includes two sets of cutting modules, each arranged on one of two rigid rings. This allows the output ends of the two cutting modules to cut hard sludge within a spiral channel formed by the convergence of several rigid rings. This invention, through its unique structural design and functional synergy, solves the comprehensive technical problems of existing river dredging equipment, such as low efficiency, easy clogging, high energy consumption, and limited functionality under complex working conditions. Specifically, the equipment utilizes an axially sliding structure composed of multiple layers of rigid rings to achieve a biomimetic morphological switching mechanism resembling a fish's feeding mouth. When the rigid rings converge, their inclined surfaces, suction inlets, and baffles work together to form a spiral channel, efficiently guiding the fluid swirling in. This solves the problem of low efficiency and easy clogging in traditional sludge suction equipment for viscous, impurity-containing sludge. Technical issues: When the rigid ring unfolds, it forms a conical cavity, effectively disturbing and peeling off the attached silt, thus solving the technical problems of incomplete cleaning and insufficient pretreatment capacity of the equipment for hard or compacted riverbeds; The cutting module can automatically switch between high-pressure crushing and vortex-assisted suction modes according to the hardness of the silt, working in conjunction with the main silt suction component to directly convert the cutting energy of the high-pressure water jet into suction assistance, thus solving the technical problems of disconnection between cutting and suction links and low energy utilization in traditional dredging; The entire system, through the deep integration and intelligent coordination of mechanics, hydraulics, and jets, achieves efficient, continuous, and adaptive cleaning of silt from hard to loose and from shallow to deep layers, ultimately solving the systemic technical problems of incomplete dredging, discontinuous operation, and poor adaptability in river ecological restoration.

[0007] Preferably, the main suction assembly further includes a diverter, which is sleeved on the inner wall of the top of the gun housing. A top cylinder is fixedly installed at the bottom of the diverter, and the output end of the top cylinder is fixedly connected to the hard ring arranged on the inner side.

[0008] Preferably, the output end of the suction gun passes through the distributor and is aligned with the opening at the lower end of the gun housing, and is located in the central area surrounded by several rigid rings.

[0009] Preferably, any one of the cutting modules includes several receiving pipes, which are arranged in a ring array and fitted into holes on a rigid ring. The receiving pipes are connected to the distributor through a metal flexible tube.

[0010] Preferably, a constricted section is arranged inside the cavity of the receiving pipe.

[0011] Preferably, the receiving pipe is internally sealed and slidably fitted with a gun head, the output end of the receiving pipe forms a sandwich layer through an inner sleeve, and the input end of the gun head is sealed and inserted into the sandwich layer.

[0012] Preferably, a guide hole is provided on the side surface of the gun head, and the guide hole corresponds to the position of the waist-shaped hole arranged on the inner sleeve.

[0013] Preferably, the gun head has several cutting holes arranged in a ring array on the surface of the output end, a spring is arranged inside the interlayer of the receiving pipe output end, and the spring is elastically connected to the gun head, and a plug is sealed and slidably inside the gun head at the output end, the plug being composed of a trigger top plate and an annular plug plate.

[0014] Preferably, the trigger top plate is located at the output end of the gun head, and when the end of the gun head is pressed, the plug moves from the closed position to the open position.

[0015] Preferably, the injection direction of the guide hole is tangent to the rotation direction of the fluid in the spiral fluid guide channel.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through its unique structural design and functional synergy, has solved the comprehensive technical problems of existing river dredging equipment, such as low efficiency, easy clogging, high energy consumption, and limited functionality under complex working conditions. Specifically, the equipment utilizes an axially sliding structure composed of multiple layers of rigid rings to achieve a biomimetic form-switching mechanism similar to "fish feeding." When the rigid rings converge, their inclined surfaces, suction inlets, and baffles work together to form a spiral channel, efficiently guiding the fluid into a swirling flow, thus solving the technical problem of low efficiency and easy clogging when traditional dredging equipment pumps viscous, impurity-containing sludge. When the rigid rings expand, they form a conical cavity, effectively disturbing and peeling off the attached sludge, thus solving the problem of... The equipment addresses the technical issues of incomplete cleaning and insufficient pretreatment capacity of hard or compacted riverbeds. The cutting module can automatically switch between high-pressure crushing and vortex-assisted suction modes according to the hardness of the silt, working in conjunction with the main silt suction component to directly convert the cutting energy of the high-pressure water jet into suction assistance. This solves the technical problems of disconnect between cutting and suction in traditional silt removal and low energy utilization. Through the deep integration and intelligent coordination of mechanics, hydraulics, and jets, the entire system achieves efficient, continuous, and adaptive cleaning of silt from hard to loose and from shallow to deep layers, ultimately solving the systemic technical problems of incomplete silt removal, discontinuous operation, and poor adaptability in river ecological restoration.

[0017] 2. This invention achieves intelligent adaptive adjustment of the sludge removal port by designing a dynamically deformable rigid ring assembly. The core lies in the top cylinder driving the rigid ring to periodically switch between two states: planar expansion and conical contraction. This mechanical action, mimicking a fish's feeding motion, produces multiple beneficial effects. In the planar expansion state, the inclined surface of the lower surface of the rigid ring, the suction port, and the baffle together form a spiral channel, which not only provides a path for the crushed sludge particles to enter the suction gun through swirling acceleration, but its physical structure can also effectively scrape and peel off the attached materials, significantly preventing the suction port from clogging. In the conical contraction state, the formed trumpet-shaped cavity can disturb a larger range of flow fields, pre-gathering the surrounding loose sludge and creating conditions for the next efficient suction. This adaptive shape change allows the equipment to easily cope with different sludge conditions, from hard, compacted sludge to loose fluid.

[0018] 3. The nozzle structure of this invention can automatically switch between "high-pressure crushing" and "vortex-assisted suction" modes according to the working conditions. This design is highly innovative. When encountering hard silt, the nozzle retracts under pressure, the plug is pushed open, and high-pressure water is concentrated and sprayed out from the cutting hole for powerful cutting. At the same time, the lateral guide hole is aligned with the waist-shaped hole, and the jet direction is consistent with the flow direction of the spiral channel, guiding the fragments to vortex motion while crushing. When in the state of the conical cavity or facing loose silt, the plug automatically closes the cutting hole under water pressure, and all the water is sprayed out tangentially from the guide hole, actively forming a powerful vortex in the cavity, which greatly enhances the suction efficiency. This adaptive mode switching based on physical contact and pressure sensing realizes the precise on-demand distribution of energy (high-pressure water), maximizing efficiency in both the cutting and suction stages.

[0019] 4. At a deeper level, this invention ingeniously constructs a local energy circulation and self-cleaning system to solve the technical problems of high energy consumption, serious jet energy waste, and easy caking inside and at the suction port when continuously pumping high-solids media, requiring frequent shutdowns for cleaning in traditional high-pressure water jet dredging equipment; the cutting component utilizes the Venturi principle to form a high-speed jet at the constriction, and this process itself generates suction force due to pressure difference, which directly assists the main suction gun's suction operation; more importantly, the design of the guide hole converts a portion of the kinetic energy of the high-pressure water into the potential energy to guide the fluid to form a vortex, which is not only "aiding suction" but also actively constructs a stable low-pressure vortex field at the suction gun inlet; this vortex field has two key functions: firstly First, it can continuously entrain surrounding fine particles, preventing them from depositing on key equipment components (such as the hard ring joint surface and the edge of the suction inlet), thus achieving dynamic self-cleaning during operation. Second, the stable swirling flow makes the sucked-in slurry more uniform, reducing pulsation and wear during subsequent pipeline transportation, and is beneficial to the separation efficiency of hull separation devices (such as hydrocyclones). Therefore, this design goes beyond simple functional superposition. Through the ingenious combination of flow channel design and jet control, it achieves multi-stage and tiered utilization of high-pressure water energy (cutting, diversion, swirling, and self-cleaning), converting energy that may cause turbulence loss into beneficial internal circulation driving force for the system. While improving dredging efficiency, it also significantly enhances the stability, reliability, and economy of the system during long-term operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a three-dimensional partial structural diagram of the present invention, illustrating the connection relationship between the support arm and the adjustment frame.

[0022] Figure 3 This is a cross-sectional schematic diagram of the main suction component structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the rigid ring of the present invention, showing the bottom structure of the rigid ring.

[0024] Figure 5 This is a schematic diagram of the unfolded and used state of several rigid rings of the present invention.

[0025] Figure 6 This is a schematic cross-sectional view of the unfolded and used structure of several rigid rings of the present invention.

[0026] Figure 7 This is a schematic cross-sectional view of the spiral tunnel path structure composed of several rigid rings according to the present invention.

[0027] Figure 8 This is a cross-sectional view of the three-dimensional structure of the cutting module of the present invention.

[0028] Figure 9 This is a partially enlarged structural diagram of the cutting module of the present invention.

[0029] Figure 10 This is a schematic diagram of the three-dimensional partial explosion structure of the present invention.

[0030] The following are the labels in the diagram: 1. Hull; 2. Support arm; 3. Adjusting frame; 4. Suction mechanism; 41. Main suction assembly; 411. Gun casing; 412. Diverter; 413. Top cylinder; 414. Suction gun; 415. Hard ring; 4151. Inclined surface; 4152. Suction inlet; 4153. Stop block; 42. Cutting assembly; 421. Cutting module; 4211. Receiving pipe; 4212. Gun head; 4213. Guide hole; 4214. Cutting hole; 4215. Spring; 4216. Plug. Detailed Implementation

[0031] like Figures 1-2 As shown, the present invention relates to a wastewater treatment equipment for river ecological restoration, comprising a hull 1, a support arm 2 with a telescopic structure, an adjustment frame 3, and a sludge suction mechanism 4.

[0032] Specifically, the hull 1 includes a silt separation device capable of separating silt and water, allowing the water to be discharged into the river in a timely manner, as well as a silt suction pump and a hydraulic system. The silt suction pump is a powerful pump specifically designed for pumping high-concentration, high-viscosity slurry, silt, sewage, or sludge containing solid particles. A first hydraulic rod is hinged to a mounting base arranged on the hull 1. The output end of the first hydraulic rod is hinged to a support arm 2, and the output end of the support arm 2 is hinged to a second hydraulic rod, which is hinged to an adjusting frame 3. Therefore, the hydraulic system can drive the support arm 2 and the adjusting frame 3 to rotate axially. The drive support arm 2 adjusts the depth of the silt suction mechanism 4 in the river, and the adjusting frame 3 adjusts the suction direction of the silt suction mechanism 4. At the same time, the support arm 2 contains an integrated pipeline, including a silt suction pipe and a high-pressure water pipe, which are used to transport silt and water respectively, and to cut hard silt.

[0033] like Figure 3 As shown, the sludge suction mechanism 4 in this embodiment includes a main sludge suction component 41 and a cutting component 42; wherein, the main sludge suction component 41 is mounted on the adjusting frame 3.

[0034] Combination Figures 3-7 and Figure 10 As shown, in this embodiment, the main suction assembly 41 includes a gun housing 411, which is fixedly mounted on the adjusting frame 3. Inside the gun housing 411 are arranged a diverter 412, a top cylinder 413, and a suction gun 414. The diverter 412 is sleeved on the inner top wall of the gun housing 411, and the top cylinder 413 is fixedly mounted on the bottom of the diverter 412. The suction gun 414 consists of a gun body and a telescopic tube with a rigid structure. The telescopic tube is sleeved inside the gun housing 411 and can axially extend and retract under the drive of the top cylinder 413, allowing the gun body to flexibly adjust its insertion depth according to operational requirements. The output end of the suction gun 414 passes through the diverter 412 and faces the same direction as the output end of the gun housing 411 (e.g., ...). Figure 3As shown, the gun housing 411 has a tower-like structure that is narrow at the top and wide at the bottom. The top is the input end and the bottom is the output end. The suction gun 414 and the output end of the gun housing 411 face downwards in the same direction to achieve direct suction of sludge. Several hard rings 415 are sealed and slidably fitted inside the gun housing 411. The hard rings 415 are sequentially sealed and slidably fitted from the outside to the inside. Specifically, each hard ring 415 has a slider arranged on its side surface, and the slider slides into the groove arranged on the adjacent hard ring 415. The outer hard ring 415 has a slider that slides into the groove arranged on the adjacent hard ring 415. The protrusions on part 5 slide inside the slots arranged on the gun housing 411. The rigid ring 415 arranged on the inner side is fitted onto the gun body surface of the suction gun 414. The output end of the top cylinder 413 is fixedly connected to the rigid ring 415 arranged on the inner side. Each rigid ring 415 has a slope 4151 and a suction port 4152 arranged on its lower surface. The slope 4151 is an annular inclined curved surface that slopes upward from the outside to the inside. This inclined curved surface structure can form a continuous inclined annular channel in several rigid rings 415, guiding the fluid into the suction port 4152. 52. The suction port 4152 is an opening on the inclined surface 4151. Several hard rings 415 are each equipped with a stop 4153 (specifically, a protruding structure on the lower edge of the hard ring 415). Specifically, when the top cylinder 413 operates, its output end drives the inner hard ring 415 and the suction gun 414 to extend and retract. The inner hard ring 415 sequentially drives the remaining hard rings 415 upwards from the inside out. Several hard rings 415 can form a conical cavity. When the top cylinder 413 drives the hard rings 415... 5. As it moves downwards, it sequentially drives the remaining rigid rings 415 downwards from the inside out, causing several rigid rings 415 to form a planar shape. These rigid rings 415 periodically switch between a planar expansion and a conical contraction shape, forming an expansion and contraction motion similar to a fish feeding. This motion helps to disturb the local flow field, remove adsorbed impurities, and improve the dredging and anti-clogging effect. When the rigid rings 415 converge to form a planar state, the inclined surface 4151 on its lower surface, the suction port 4152, and the baffle 4153 form a spiral channel (such as...). Figure 7 As shown, hard silt is cut and broken into smaller particles or strips. Subsequently, these fragments are accelerated and transported along the swirling path formed by the spiral channel under the guidance of negative pressure suction and inclined plane 4151. Finally, they are efficiently sucked into the equipment through suction port 4152. During this process, the structures of suction gun 414 and gun shell 411 cooperate to form a continuous closed-loop operation of cutting and suction. At the same time, the spiral structure can locally cut and separate the riverbed surface during operation, achieving efficient dredging in coordination with diverter 412 and top cylinder 413. This not only enhances the adaptability of suction but also improves the operational integrity and engineering efficiency of the entire dredging system.

[0035] It is worth noting that the suction gun 414 is the core functional component for performing dredging operations in this embodiment. It is a conventional technology and will not be described in detail here. Under negative pressure, the suction gun 414 is responsible for directly contacting and sucking up the sludge medium. Its output end efficiently sucks in the high-concentration mud-water mixture and transports it to the subsequent diversion and treatment unit through the internal flow channel. It is a key actuator for achieving continuous and efficient dredging operations.

[0036] This invention achieves intelligent adaptive adjustment of the sludge removal port by designing a dynamically deformable rigid ring 415 assembly. The core lies in the top cylinder 413 driving the rigid ring 415 to periodically switch between two states: planar expansion and conical contraction. This mechanical action, mimicking a fish's feeding motion, produces multiple beneficial effects. In the planar expansion state, the inclined surface 4151 on the lower surface of the rigid ring 415, the suction port 4152, and the baffle 4153 together form a spiral channel. This not only provides a path for the crushed sludge particles to enter the suction gun 414 with swirling acceleration, but its physical structure also effectively scrapes and peels off attached materials, significantly preventing clogging of the suction port. In the conical contraction state, the formed trumpet-shaped cavity can disturb a larger flow field, pre-gathering the surrounding loose sludge and creating conditions for the next efficient suction. This adaptive shape change allows the equipment to easily handle different sludge conditions, from hard, compacted sludge to loose fluid. Combination Figure 3 and Figures 7-8 As shown, in this embodiment, the cutting assembly 42 includes two sets of cutting modules 421; the two sets of cutting modules 421 are respectively arranged on two rigid rings 415; so that the output ends of the two sets of cutting modules 421 can cut the hard sludge in the spiral channel formed by the convergence of several rigid rings 415.

[0037] Combination Figures 8-9As shown, in this embodiment, the two sets of cutting modules 421 have the same structure and function. Therefore, we will take any one of them as an example to illustrate its composition: The cutting module 421 includes several receiving pipes 4211. The several receiving pipes 4211 are arranged in a ring array and sleeved in the holes arranged on the rigid ring 415. The receiving pipes 4211 are connected to the diverter 412 through a metal hose. The receiving pipes 4211 have a constriction. According to the Venturi principle, a high-speed jet can be formed at the constriction. The negative pressure effect generated by the water pressure difference is used to suck in and break up the external silt. At the same time, the jet impact force cuts and separates the riverbed sludge. The receiving pipes 4211 are internally sealed and slidably fitted with a gun head 4212. The output end of the receiving pipes 4211 forms a sandwich through the inner sleeve. The input end of 4212 is sealed and inserted into the interlayer. The side surface of the gun head 4212 is provided with a guide hole 4213, which corresponds to the position of the waist-shaped hole arranged on the inner sleeve. The output end surface of the gun head 4212 is provided with several cutting holes 4214 in a ring array. The spring 4215 is arranged inside the interlayer at the output end of the receiving pipe 4211, and the spring 4215 is elastically connected to the gun head 4212. The plug 4216 is sealed and slidably installed inside the output end of the gun head 4212. The plug 4216 is composed of a trigger top plate and an annular plug plate. The trigger top plate is located at the output end of the gun head 4212, and the annular plug plate is sleeved inside the output end of the gun head 4212, so that the cutting holes 4214 and the gun head 4212 are separated.

[0038] It is worth noting that the injection direction of several guide holes 4213 is consistent with the fluid flow direction of the spiral channel.

[0039] Specifically, when the plug 4216 comes into contact with hard silt, the trigger plate moves upward against the hard silt, the annular plug moves out, allowing the cutting hole 4214 to flow, and water is jetted from it to cut the hard silt. At this time, the guide hole 4213, due to the force of the spring 4215, corresponds to the position of the waist-shaped hole arranged on the inner sleeve and flows; if the gun shell 411 moves towards the hard silt, the gun head 4212 moves into the interlayer, causing the guide hole 4213 to be misaligned with the position of the waist-shaped hole arranged on the inner sleeve, thus... When the guide hole 4213 is blocked, the cutting hole 4214 is open, increasing the water pressure inside the cutting hole 4214; when several rigid rings 415 unfold to form a conical cavity, due to the water pressure inside the gun head 4212, the plug 4216 is tightly attached to its output end, causing the cutting hole 4214 to be blocked, while the guide hole 4213 is open and corresponds to the waist-shaped hole arranged on the inner sleeve. Since the spray direction of the guide hole 4213 is consistent with the fluid flow direction of the spiral channel, the fluid in the conical cavity is drawn into the suction gun 414 in a swirling manner.

[0040] The nozzle 4212 structure of this invention can automatically switch between "high-pressure crushing" and "vortex-assisted suction" modes according to working conditions, a highly innovative design. When encountering hard sludge, the nozzle 4212 retracts under pressure, the plug 4216 is pushed open, and high-pressure water is concentrated and sprayed out from the cutting hole 4214 for powerful cutting. At the same time, the lateral guide hole 4213 is aligned with the waist-shaped hole, and the jet direction is consistent with the flow direction of the spiral channel, guiding the fragments to vortex motion while crushing. When in a conical cavity or facing loose sludge, the plug 4216 automatically closes the cutting hole 4214 under water pressure, and all the water is sprayed out tangentially from the guide hole 4213, actively forming a powerful vortex in the cavity, greatly enhancing the suction efficiency. This adaptive mode switching based on physical contact and pressure sensing achieves precise on-demand distribution of energy (high-pressure water), maximizing efficiency in both cutting and suction stages.

[0041] Working principle: This embodiment provides a sewage treatment device for river ecological restoration. During operation, the hull 1 drives the support arm 2 and the adjusting frame 3 through a hydraulic system to precisely position the sludge suction mechanism 4 to the area to be cleaned on the riverbed. The main sludge suction component 41 of the sludge suction mechanism 4 starts to work, and its internal top cylinder 413 drives several rigid rings 415 to periodically change shape. When the rigid ring 415 moves downwards and unfolds into a planar state, its lower surface inclined surface 4151, suction port 4152, and stop block 4153 together form a spiral channel. Firstly, when encountering hard silt, the cutting module 421 of the cutting assembly 42 is activated. After its nozzle 4212 contacts the silt, the plug 4216 is pushed open, and high-pressure water is ejected from the cutting hole 4214 to break it up. Secondly, the guide hole 4213 exerts a force on the nozzle 4212 due to the force of the spring 4215. The guide hole 4213 corresponds to the position of the waist-shaped hole arranged on the inner sleeve and flows through it, allowing the guide hole 4213 and the cutting hole 4214 to flow together. The water cuts the hard silt through the cutting hole 4214. Due to the spray from several guide holes 4213... The jetting direction is consistent with the fluid flow direction of the spiral channel. Therefore, the water flowing out of the guide hole 4213 can increase the sludge flow velocity, forming a highly efficient and swirling suction into the sludge suction gun 414. When the rigid ring 415 moves upward and conically converges under the drive of the top cylinder 413, the gun head 4212 of the cutting module 421 resets under the action of internal water pressure and spring 4215. The plug 4216 closes the cutting hole 4214, and the water flows out from the guide hole 4213 along the spiral direction, forming a swirling flow in the conical cavity, which helps to disturb and suck up the loose sludge. The sucked mud-water mixture is transported to the separation device of the hull 1 through the pipe in the support arm 2 to achieve mud-water separation. The purified water is discharged back into the river, thus completing a sludge removal cycle. The entire system achieves efficient, anti-clogging, and continuous cleaning of complex sludge through the intelligent coordination of the biomimetic motion of the rigid ring 415 and the adaptive jetting mode of the cutting module 421.

[0042] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A wastewater treatment device for river ecological restoration, comprising a hull (1), a support arm (2) with a telescopic structure, an adjustment frame (3), and a sludge suction mechanism (4), characterized in that, The suction mechanism (4) includes a main suction component (41) and a cutting component (42). The main suction assembly (41) includes a gun housing (411) fixedly installed on the adjustment frame (3), a suction gun (414) arranged in the gun housing (411), and several hard rings (415). The suction gun (414) consists of a gun body and a telescopic pipe with a rigid structure; A number of hard rings (415) are sequentially fitted from the outside to the inside and can slide along the axial direction of the gun shell (411), so that the lower end faces of the hard rings (415) can be gathered to form a plane or unfolded to form a cone. The rigid ring (415) arranged on the inner side is fitted onto the gun body surface of the suction gun (414); Each of the hard rings (415) has a ramp (4151) and a suction port (4152) arranged on its lower surface. The suction port (4152) is arranged on the ramp (4151). A stop block (4153) is installed at the bottom of each of the hard rings (415). When several hard rings (415) come together, the inclined surface (4151) on its lower surface, the inlet (4152) and the baffle (4153) form a spiral channel; When several hard rings (415) are unfolded, the several hard rings (415) can form a conical cavity through the inclined plane (4151); When several hard rings (415) periodically switch between convergence and expansion, they can form the expansion and contraction movements of the fish's mouth when it is feeding. The cutting assembly (42) includes two sets of cutting modules (421); the two sets of cutting modules (421) are respectively arranged on two rigid rings (415); so that the output ends of the two sets of cutting modules (421) can cut the hard sludge in the spiral channel formed by the convergence of several rigid rings (415).

2. The wastewater treatment equipment for river ecological restoration according to claim 1, characterized in that, The main suction assembly (41) also includes a diverter (412), which is sleeved on the top inner wall of the gun housing (411). A top cylinder (413) is fixedly installed at the bottom of the diverter (412), and the output end of the top cylinder (413) is fixedly connected to the hard ring (415) arranged on the inner side.

3. The wastewater treatment equipment for river ecological restoration according to claim 2, characterized in that, The output end of the suction gun (414) passes through the distributor (412) and is aligned with the opening direction of the lower end of the gun shell (411), and is located in the central area surrounded by several hard rings (415).

4. The wastewater treatment equipment for river ecological restoration according to claim 3, characterized in that, Each of the cutting modules (421) includes a plurality of receiving pipes (4211), which are arranged in a ring array and fitted into holes arranged on a rigid ring (415). The receiving pipes (4211) are connected to the distributor (412) through a metal flexible tube.

5. The wastewater treatment equipment for river ecological restoration according to claim 4, characterized in that, The receiving pipe (4211) has a constricted section arranged inside its lumen.

6. The wastewater treatment equipment for river ecological restoration according to claim 5, characterized in that, The receiving tube (4211) is internally sealed and slidably fitted with a gun head (4212). The output end of the receiving tube (4211) forms a sandwich layer through an inner sleeve, and the input end of the gun head (4212) is sealed and inserted into the sandwich layer.

7. The wastewater treatment equipment for river ecological restoration according to claim 6, characterized in that, The gun head (4212) has a guide hole (4213) on its side surface, and the guide hole (4213) corresponds to the waist-shaped hole arranged on the inner sleeve.

8. The wastewater treatment equipment for river ecological restoration according to claim 7, characterized in that, The gun head (4212) has several cutting holes (4214) arranged in a ring array on the surface of the output end. A spring (4215) is arranged inside the interlayer arranged at the output end of the receiving pipe (4211), and the spring (4215) is elastically connected to the gun head (4212). A plug (4216) is sealed and slidably arranged inside the output end of the gun head (4212). The plug (4216) is composed of a trigger top plate and an annular plug plate.

9. A wastewater treatment device for river ecological restoration according to claim 8, characterized in that, The trigger top plate is located at the output end of the gun head (4212). When the end of the gun head (4212) is pressed, the plug (4216) moves from the closed position to the open position.

10. A wastewater treatment device for river ecological restoration according to claim 9, characterized in that, The injection direction of the guide hole (4213) is tangent to the rotation direction of the fluid in the spiral fluid guide channel.

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