Intelligent anti-blocking steady-flow suction device

Abstract

The invention discloses an intelligent anti-blocking steady-flow suction device, and relates to the technical field of anti-blocking of industrial fluid conveying and pumping systems, the intelligent anti-blocking steady-flow suction device comprises a conical pipe and an inner collecting pipe which are arranged at an inlet of a submerged pump, and a self-cleaning structure is composed of a sliding ring, a filter plate, a guide rod and a cleaning impeller and is installed in the inner collecting pipe in a sliding mode. The sliding ring and the inner collecting pipe are provided with guide strips. The filter plate is of a conical structure with through holes, and the filter plate is matched with the first material collecting groove and the detachable second material collecting groove to achieve impurity sliding and classified collection. A locking block is fixed in the end cover, a groove matched with the locking block is formed in the cleaning impeller, and the self-cleaning structure axially slides under the action of differential pressure to achieve locking and unlocking of the cleaning impeller. A first magnetic ring is fixed in the first material collecting groove, a second magnetic ring is fixed on the inner wall of the sliding ring, and reset force is applied to the self-cleaning structure through magnetic repulsive force. A cleaning strip and an embedded vibration strip are arranged on the cleaning impeller, the brushless motor rotates along with the cleaning impeller to generate power, the vibration strip is driven by the controller and the super capacitor to vibrate, and the blockage removal effect is improved.

Description

Technical Field

[0001] This invention relates to the field of anti-clogging technology for industrial fluid conveying and pumping systems, specifically an intelligent anti-clogging and flow-stabilizing suction device. Background Technology

[0002] In chemical, metallurgical, mining, environmental protection, and urban water supply and drainage applications, submersible pumps, submersible liquid pumps, and sewage pumps are widely used to pump liquids containing particles, fibers, or silt. In such applications, blockage on the suction side not only leads to a decrease in pump flow and head fluctuations but can also cause pump cavitation, increased vibration, and bearing overload. In severe cases, it may require shutdown and disassembly for inspection, affecting the continuous operation of the entire process line. Therefore, installing anti-clogging suction devices or filters on the pump inlet side is a common technical solution.

[0003] In existing technologies, a common practice is to install a fixed filter screen or filter basket structure at the front end of the pump inlet, which initially traps impurities through through holes of a certain diameter. Other solutions employ external filters, filter cartridges, or backwash filter elements, using bypass pipelines or external flushing pumps to periodically clean the filter elements. Still other solutions incorporate simple flow-damping components or externally driven scraper structures near the filter elements to mitigate localized scaling and entanglement. While these solutions can reduce the risk of large particles or long fibrous impurities directly entering the pump chamber to some extent, significant problems still exist.

[0004] On the one hand, fixed filter screens and filter baskets can only achieve static filtration. Once the filter pores become clogged in a localized area, the cross-section of the inlet flow channel decreases rapidly, the inlet pressure differential increases, and the system needs to be shut down for disassembly and cleaning. They cannot achieve self-cleaning without shutting down the system, making it difficult to meet the requirements of continuous operation. External filters and backwashing structures usually require additional piping and valves, occupying installation space, and are structurally complex. They also rely on external power sources and control systems, resulting in higher overall costs and more potential failure points. Their application is limited in confined spaces such as narrow liquid tanks and sump pits.

[0005] On the other hand, in some designs that employ scraping or turbulence structures, most scraping elements are rigidly connected to the pump shaft or external motor, and their operating frequency is tied to the pump speed or external drive frequency. This makes it difficult to adaptively trigger cleaning based on the actual degree of filter plate clogging. Existing structures often lack effective migration and graded collection mechanisms for scraped-off impurities, causing them to circulate and accumulate near the suction inlet, easily leading to secondary clogging. Furthermore, existing suction devices generally lack intuitive feedback on the working status of the self-cleaning structure and the clogging status of the filter plates, making it difficult for maintenance personnel to promptly determine whether maintenance is needed. This results in either over-maintenance or missing the optimal treatment window, affecting the reliability of system operation.

[0006] Therefore, there is an urgent need for an intelligent anti-clogging and flow-stabilizing suction device that is compact in structure, can utilize the fluid's own energy to trigger and reset under submerged conditions, has online self-cleaning function, impurity classification and collection function, and can provide visual indication of clogging status. This device can effectively alleviate filter plate clogging, reduce maintenance intensity, and improve the long-term stable operation capability of the pumping system without shutting down the system. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and propose an intelligent anti-clogging and flow-stabilizing suction device to solve the above-mentioned problems.

[0008] The objective of this invention is achieved through the following technical solution: an intelligent anti-clogging and flow-stabilizing suction device, comprising a conical tube, with the larger diameter end of the conical tube serving as the water inlet. An inner collecting tube is fixedly connected to the inner wall of the water inlet of the conical tube, and a slip ring is slidably connected within the inner collecting tube. A filter plate is fixedly connected to the end of the slip ring away from the conical tube. Multiple guide strips are provided between the inner collecting tube and the slip ring, and the guide strips are fixedly connected to the inner collecting tube. A guide rod is fixedly connected to the end of the filter plate away from the conical tube, and a cleaning impeller is rotatably connected to the outer end of the guide rod. Multiple through holes are opened on the filter plate along its axial direction. A brushless motor is provided between the cleaning impeller and the guide rod. The brushless motor is an external rotor brushless motor. The stator of the brushless motor is fixedly connected to the guide rod, and the rotor is fixedly connected to the cleaning impeller. Each blade of the cleaning impeller has a cleaning strip fixedly connected to the end near the filter plate, and a vibrating strip is fixedly connected inside the cleaning strip. An end cap is threaded to the outer end of the water inlet. A locking block is fixedly connected to the end cap at the corresponding position of the guide rod. A groove is provided at the corresponding position of the cleaning impeller to cooperate with the locking block. The slip ring, filter plate, guide rod, and cleaning impeller form a self-cleaning structure and slide together in the inner collection pipe along the axis of the guide rod. Limiting rings are fixedly connected to both ends of the inner wall of the inner collection pipe along its axis. A first collection trough is provided at the end of the inner collection pipe near the end cap. A magnetic ring one is fixedly connected in the first collection trough. A magnetic ring two is fixedly connected to the inner wall of the slip ring. The magnetic ring one and magnetic ring two have the same magnetic poles and are arranged close to each other along their axis. A second collection trough is provided at the outer end of the tapered pipe at the corresponding position of the inner collection pipe. The second collection trough is a hollow structure and is connected to the first collection trough through a pipe. The cleaning impeller is an axial flow impeller. The guide rod passes through the end cap and extends to the outside of the end cap, and the extended part of the guide rod has a boss.

[0009] The filter plate has a conical structure, with the larger diameter end of the conical structure facing away from the conical tube. The conical structure of the filter plate is used to allow impurities to slide into the first collection tank and enter the second collection tank through the pipe when they pass through the filter plate, propelled by the liquid flow. The cleaning impeller is set to contact the end of the filter plate away from the conical tube.

[0010] The limiting rings are fixed on the inner walls of both ends of the inner collection tube. When the self-cleaning structure slides away from the tapered tube to the limiting ring near the end cap, the groove on the cleaning impeller engages with the locking block to lock the rotation of the cleaning impeller. When the self-cleaning structure slides towards the tapered tube to the other limiting ring, the cleaning impeller disengages from the locking block to allow the cleaning impeller to rotate.

[0011] Magnetic ring one is fixed in the first collection trough, and magnetic ring two is fixed in the inner wall of the slip ring. The same magnetic poles of magnetic ring one and magnetic ring two are arranged opposite each other along the axis of the device. The self-cleaning structure is subjected to a pre-tightening force towards the end cover through magnetic repulsion.

[0012] The first collection trough is set in the annular cavity formed near the end cap of the inner collection pipe. The second collection trough is detachably fixed to the outer end of the tapered pipe and is set in the position corresponding to the first collection trough. It is used to receive impurities transported by the first collection trough through the pipeline.

[0013] It also includes a controller, with the cleaning strip arranged along the length of the cleaning impeller blades, and the vibration strip embedded inside the cleaning strip and electrically connected to the controller, so that when the vibration strip is energized, it drives the cleaning strip to generate high-frequency micro-vibration relative to the filter plate surface.

[0014] The brushless motor generates electricity when the cleaning impeller rotates with the liquid flow. Its output is connected to a supercapacitor through a controller. The controller controls the on / off state of the vibrating bar according to the voltage state of the supercapacitor, so as to drive the vibrating bar to vibrate at high frequency within a preset voltage range.

[0015] The end cap has multiple through holes along its axis, and the diameter of the through holes on the end cap is larger than the diameter of the through holes on the filter plate. The locking block has a regular hexagonal cross-section along its axis. The vibration strip is made of piezoelectric material. Multiple guide strips are arranged at intervals along the circumference of the inner collection tube. The inner side of the guide strip slides against the outer side of the slip ring to guide the axial sliding of the self-cleaning structure.

[0016] The outer circumferential surface of the locking block is a regular hexagonal prism structure. The groove on the cleaning impeller is a regular hexagonal hole that matches the cross-section of the locking block. The groove is fitted onto the outer circumference of the locking block at the limiting position near the end cap of the self-cleaning structure to lock the cleaning impeller.

[0017] The guide rod extends to the boss on the outside of the end cover to indicate the axial position of the self-cleaning structure. When the filter plate is blocked, causing the self-cleaning structure to be unable to reset to the limit position near the end cover under the repulsive force of magnetic ring one and magnetic ring two, the blockage status of the filter plate can be judged by observing the exposed position of the guide rod.

[0018] The beneficial effects of this invention are: By installing an inner collection pipe inside the conical inlet, and slidably arranging a slip ring and a filter plate and guide rod fixedly connected to it within the inner collection pipe, combined with multiple guide strips spaced circumferentially and fixedly connected to the inner collection pipe, the self-cleaning structure can smoothly reciprocate axially within the inner collection pipe. This ensures that the filter plate and the cleaning impeller remain coaxial and concentric, thus forming a compact, continuous, and stable flow filtration channel without significantly altering the pump inlet installation interface. The filter plate adopts a conical structure, with the larger diameter end facing away from the conical pipe. While intercepting and filtering the incoming medium, the outer surface of the filter plate is constructed as an inclined guide surface that facilitates the sliding of impurities towards the first collection trough. This prevents the intercepted particles and fibrous impurities from accumulating locally on the filter plate, slowing down the rate of blockage formation from the source and improving the stability of the filtration process.

[0019] By integrating the slip ring, filter plate, guide rod, and cleaning impeller into a single self-cleaning structure, and setting limiting rings at both ends of the inner wall of the inner collection pipe, the self-cleaning structure has clearly defined limiting positions at the end near the end cover and the end near the conical tube. At the end near the end cover, the groove on the cleaning impeller engages with the locking block fixed on the end cover to reliably lock the rotation of the cleaning impeller. When the self-cleaning structure is not triggered, the cleaning impeller remains stationary, thus ensuring a stable inlet flow field during normal filtration and preventing the introduction of additional disturbances. When the filter plate becomes clogged or the pressure difference increases, the self-cleaning structure overcomes the magnetic repulsion between magnetic ring one and magnetic ring two under the axial pressure of the liquid and slides towards the conical tube. After the cleaning impeller disengages from the locking block, it can rotate under the impact of the liquid flow. The self-cleaning structure automatically switches from the locked filtration mode to the rotating self-cleaning mode, achieving self-triggered unclogging without external drive or manual intervention, which helps reduce the risk of pump unit operation interruption.

[0020] Magnetic ring one is fixed inside the first collection trough, and magnetic ring two is fixed to the inner wall of the slip ring. The same magnetic poles of magnetic ring one and magnetic ring two are arranged opposite each other along the axial direction of the device. The magnetic repulsion force generated by the opposite magnetic poles applies a preload force towards the end cover to the self-cleaning structure. On the one hand, this magnetic repulsion force constitutes the axial reset elastic element of the self-cleaning structure. After the filter plate is unblocked and the pressure difference decreases, it can automatically push the self-cleaning structure back to the limit position near the end cover, so that the cleaning impeller engages with the locking block again, realizing automatic reset of the entire stroke. On the other hand, by reasonably designing the magnetic properties and installation positions of magnetic ring one and magnetic ring two, a clear action threshold can be set for the self-cleaning structure, so that the self-cleaning action is only triggered when the filter plate is blocked to a certain extent, avoiding frequent repetition due to slight fluctuations, and improving the controllability and reliability of the system action.

[0021] A first collection trough is formed near the end cap of the inner collection pipe, and a second collection trough, connected to the first collection trough via a pipe, is set at the corresponding position on the outer end of the conical pipe. The second collection trough is hollow and detachable. Through this two-stage collection method of the built-in first collection trough and the external second collection trough, impurities scraped off the filter plate and sliding along the outer surface of the filter plate are guided to an independent settling space. The impurities are initially intercepted in the first collection trough and finally settled and stored in the second collection trough. The detachable connection between the second collection trough and the conical pipe allows maintenance personnel to remove the second collection trough for emptying or flushing without disassembling the main channel components such as the conical pipe and the inner collection pipe. This significantly reduces the workload and intensity of maintenance, helps extend the continuous operation time of the system, and reduces the frequency of downtime for maintenance.

[0022] The cleaning impeller adopts an axial flow impeller structure, with cleaning strips arranged along the length of the impeller blades and embedded within the cleaning strips by vibrating strips. When the self-cleaning structure is in the unlocked position and the cleaning impeller is driven to rotate under the action of liquid flow, the cleaning strips move circumferentially around the guide rod with the cleaning impeller, forming a covering scraping area on the conical outer surface of the filter plate. This loosens the blocky impurities and entangled fibers attached to the outer surface of the filter plate during rotation and pushes them into the first collection trough. Simultaneously, the vibrating strips are made of piezoelectric material and form an energy conversion closed loop with the cleaning impeller and brushless motor through an electrical unit consisting of a controller and a supercapacitor. The brushless motor operates in generator mode when the cleaning impeller rotates, and its output terminal charges the supercapacitor through the controller. The controller controls the on / off state of the vibrating strips according to the voltage state of the supercapacitor, causing the vibrating strips to generate high-frequency vibrations within a preset voltage range. Under this action, the cleaning strip not only generates a macroscopic circumferential scraping effect, but also generates high-frequency micro-vibration in the direction perpendicular to the filter plate surface. This generates periodic shearing action and peeling force around the filter plate through holes and inside the surface adhesive layer, resulting in a stronger peeling effect on highly adhesive, fine-particle or fibrous blockages, making the self-cleaning process more thorough.

[0023] The diameter of the through hole in the end cap along the axial direction is larger than that of the filter plate through hole, and the end cap and the inner collection pipe together form an annular water inlet channel. While ensuring sufficient overall water inlet cross-sectional area, the main filtration function is concentrated at the filter plate, which helps to prevent the end cap body from becoming a new blockage point. At the same time, by designing the cross-section of the locking block along its axis as a regular hexagonal structure, and setting a matching regular hexagonal groove on the cleaning impeller, the cleaning impeller can achieve reliable torque transmission and anti-rotation capability through polygonal surface mating in the locked state, preventing slippage under high pressure differential impact conditions and improving the mechanical reliability of the locking mechanism under long-term periodic operation. Furthermore, the guide rod passes through the end cover and extends to the outside of the end cover, and the extended part of the guide rod is provided with a boss. By utilizing the one-to-one correspondence between the axial position of the guide rod and the position of the self-cleaning structure, maintenance personnel can intuitively determine whether the self-cleaning structure is currently in the locked or working position by observing the extended position of the guide rod and its boss on the outside of the end cover, and whether the self-cleaning structure can be smoothly reset under the repulsive force of magnetic ring one and magnetic ring two after the filter plate is blocked. This provides a simple and reliable mechanical blockage status indication method without the need to add complex sensors and signal lines, which helps to reduce system costs and failure risks.

[0024] The conical tube and inner collection tube provide a stable suction flow channel. The self-cleaning structure, consisting of slip rings, filter plates, guide rods, and a cleaning impeller, enables automatic unlocking and cleaning in the event of blockage. Magnetic rings one and two provide controllable magnetic repulsion reset and action thresholds. The first and second collection troughs complete the graded collection and convenient cleaning of impurities. The brushless motor, controller, supercapacitor, and vibrating bar constitute a self-sufficient high-frequency vibration cleaning system. The outer boss of the guide rod provides a visual indication of the working status. Through the above series of combinations, the intelligent anti-clogging and stable flow suction device of this invention can effectively suppress the formation and development of filter plate blockage under the harsh operating conditions of submersible pumps, and achieve online self-cleaning without external power supply and manual intervention when blockage occurs, significantly improving the operational reliability and maintenance convenience of the pump system. Attached Figure Description

[0025] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is an exploded view of the entire invention; Figure 3 This is a front view of the present invention; Figure 4 For the present invention Figure 3 Sectional view of AA; Figure 5 For the present invention Figure 4 BB section view; Figure 6 For the present invention Figure 4 CC section view; Figure 7 For the present invention Figure 4 Enlarged view at point D; Figure 8 This is a structural diagram of the present invention.

[0026] Explanation of the labels in the diagram 1. Conical tube; 2. Inner collection tube; 3. Slip ring; 4. Filter plate; 5. Guide rod; 6. Cleaning impeller; 7. Cleaning strip; 8. End cover; 9. Locking block; 10. Magnetic ring one; 11. Magnetic ring two; 12. Second collection trough. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that the directional concepts of left, right, up, down, front, back, inside, and outside in the following scheme are all relative directions, and will not be listed one by one here.

[0029] Example 1 like Figures 1 to 8As shown, in this embodiment, the intelligent anti-clogging flow-stabilizing suction device is installed at the suction inlet of the submersible pump. It is used to stabilize and filter the solid-containing liquid entering the pump body and automatically unblock the filter plate 4 when it becomes clogged. The intelligent anti-clogging flow-stabilizing suction device in this embodiment includes a conical tube 1. The end of the conical tube 1 with the larger diameter is designated as the inlet. An axially extending inner collecting tube 2 is fixedly connected to the inner wall of the inlet of the conical tube 1. A slip ring 3 is coaxially slidably connected inside the inner collecting tube 2. The slip ring 3 achieves axial reciprocating motion of the self-cleaning structure through its sliding engagement with the inner collecting tube 2. A filter plate 4 is fixedly connected to the end of the slip ring 3 away from the conical tube 1. The filter plate 4 is positioned in the middle of the flow channel of the inner collecting tube 2 and is used for primary filtration of the liquid entering the device. Multiple guide strips are spaced circumferentially between the inner wall of the inner collecting pipe 2 and the outer circle of the slip ring 3. The guide strips are fixedly connected to the inner collecting pipe 2, and their inner surfaces slide against the outer circle of the slip ring 3. The multiple guide strips guide and limit the axial movement of the slip ring 3, preventing it from becoming eccentric or tilted, and ensuring that the self-cleaning structure reciprocates smoothly along the axial direction within the inner collecting pipe 2. The filter plate 4 has an overall conical structure, with the larger diameter end facing away from the conical pipe 1, creating an inclined guide surface on the outer surface of the filter plate 4 that gradually narrows from upstream to downstream. A guide rod 5 extending along the axis of the device is fixedly connected to the end of the filter plate 4 away from the conical pipe 1. The guide rod 5 is structurally fixed to the slip ring 3 and the filter plate 4, extending the self-cleaning structure to the vicinity of the end cover 8 and providing rotational support for the cleaning impeller 6. After the outer end of the guide rod 5 extends out of the filter plate 4, it is rotatably connected to the cleaning impeller 6 via a bearing or bushing. The cleaning impeller 6 is arranged on the side of the filter plate 4 away from the tapered tube 1 and is in contact with the large tapered end surface of the filter plate 4, so that the cleaning impeller 6 always stays in contact with the downstream side surface of the filter plate 4 when its axial position changes. The filter plate 4 has multiple through holes along its axial direction. The through holes are arranged in the circumferential and radial directions to form a filter hole array, which is used to intercept and filter the flowing liquid. The pore size and pore density of the through holes are selected according to the particle size and flow rate requirements in the medium.

[0030] A brushless motor is disposed between the cleaning impeller 6 and the guide rod 5. The brushless motor is preferably an external rotor brushless motor structure. The stator of the brushless motor is fixed to the guide rod 5, and the rotor is fixedly connected to the cleaning impeller 6. This arrangement ensures that when the cleaning impeller 6 rotates under the impact of the liquid flow, the external rotor brushless motor rotates synchronously with the cleaning impeller 6 to generate electrical energy. In this embodiment, the cleaning impeller 6 adopts an axial flow impeller structure. The blades of the cleaning impeller 6 are arranged in a combination of radial and axial directions. A thin strip of cleaning strip 7 is fixedly connected to the edge of each blade near one end of the filter plate 4. The cleaning strip 7 extends along the length of the blade to form line contact with the conical outer surface of the filter plate 4. A vibration strip is embedded inside the cleaning strip 7 along its length. The vibration strip is integrally formed from piezoelectric material and can generate high-frequency micro-vibration when a drive electrical signal is subsequently connected. Since the vibrating strip is embedded inside the cleaning strip 7, when the vibrating strip vibrates, it can drive the cleaning strip 7 to generate a small high-frequency reciprocating displacement relative to the conical outer surface of the filter plate 4, thereby enhancing the peeling effect on the outer surface of the filter plate 4.

[0031] An end cap 8 is fixed to the outer end of the inlet of the conical tube 1 via a threaded connection. The end cap 8 covers the outer side of the inlet of the conical tube 1 and forms a detachable connection with the conical tube 1 for easy maintenance. Multiple through holes are formed along the axial direction of the end cap 8, evenly spaced circumferentially, forming an annular inlet channel with the inlet of the conical tube 1. The diameter of the through holes on the end cap 8 is designed to be larger than the diameter of the through holes on the filter plate 4 to ensure that the end cap 8 has a minimal impact on the overall flow rate, with the filter plate 4 handling the primary filtration function, thus preventing the end cap 8 from becoming a major clogging point. A locking block 9 is fixedly connected to the end cap 8 at a corresponding position along the axial extension of the guide rod 5. The locking block 9 is fixed to the inner side of the end cap 8 by welding or screws. The cross-section of the locking block 9 along its axial direction is machined into a regular hexagonal structure, with its outer circumference forming a regular hexagonal prism structure. The cleaning impeller 6 has a groove on its surface that matches the shape of the locking block 9 at a position corresponding to the locking block 9. The groove also has a regular hexagonal cross-section. When the self-cleaning structure is in the limiting position on the end cover 8 side, the groove can fit around the outer periphery of the locking block 9, thereby locking the rotation of the cleaning impeller 6. Due to the use of a polygonal mating structure, torque can be reliably transmitted in the locked state, preventing the cleaning impeller 6 from rotating relative to the locking block 9.

[0032] The slip ring 3, filter plate 4, guide rod 5, and cleaning impeller 6 are structurally fixedly connected to form a self-cleaning structure. The self-cleaning structure slides back and forth within the inner collection tube 2 along the axis of the guide rod 5 through the sliding fit between the slip ring 3 and the inner collection tube 2, and the sliding fit between the guide rod and the slip ring 3. To limit the axial movement of the self-cleaning structure, limit rings are fixedly connected to both ends of the inner wall of the inner collection tube 2 along its axis. The limit rings can be fixed to the inner wall of the inner collection tube 2 by welding or slotting, forming an axial stop on the end face of the slip ring 3. When the self-cleaning structure is in a stationary position near the end cover 8 under the action of magnetic force and gravity, the slip ring 3 abuts against the limit ring near the end cover 8. At this time, the groove on the cleaning impeller 6 engages with the locking block 9, and the cleaning impeller 6 is in a locked state. Conversely, when the self-cleaning structure slides towards the tapered tube 1 under liquid pressure to another limiting ring, the slip ring 3 abuts against the limiting ring near one end of the tapered tube 1, the cleaning impeller 6 disengages from the locking block 9, the groove separates from the locking block 9, thereby allowing the cleaning impeller 6 to rotate freely.

[0033] An annular cavity is reserved between the inner wall of the inner collecting pipe 2 near the end cap 8 and the outer surface of the slip ring 3, forming the first collecting trough. The first collecting trough is used to collect impurity particles that slide down the conical outer surface of the filter plate 4 and are scraped off by the cleaning impeller 6 or cleaning strip 7. The volume of the first collecting trough is selected according to the impurity content and maintenance cycle, and is maximized as much as possible without affecting the main flow channel of the inner collecting pipe 2 to improve the collecting capacity. A ring-shaped magnetic ring 10 is fixedly connected inside the first collecting trough. The magnetic ring 10 is continuously arranged along the circumference of the inner collecting pipe 2, and its central axis coincides with the axis of the device. A second magnetic ring 11 is fixedly connected to the inner wall of the slip ring 3. The second magnetic ring 11 is coaxially arranged with the first magnetic ring 10. The same magnetic poles of the first magnetic ring 10 and the second magnetic ring 11 are arranged close to each other along their axial direction. The axial magnetic repulsion force is generated by the opposite magnetic poles. The magnetic repulsion force applies a preload force towards the end cap 8 to the self-cleaning structure. By reasonably selecting the magnetic energy product, size, and installation gap of magnetic ring 10 and magnetic ring 11, the axial pressure threshold that the self-cleaning structure needs to overcome when moving from the position near end cover 8 to the position near conical tube 1 can be set. This allows the self-cleaning structure to remain in the locked position under normal slight blockage conditions. Only when the filter plate 4 is blocked, causing the pressure difference to reach a predetermined level, will the self-cleaning structure overcome the magnetic repulsion and slide towards conical tube 1 under the action of liquid pressure, thus achieving automatic unlocking and self-cleaning.

[0034] A second collection trough 12 is provided at the outer end of the tapered tube 1, corresponding to the inner collection tube 2. The second collection trough 12 is preferably made of metal or high-strength engineering plastic and has a hollow structure. The second collection trough 12 is connected to the first collection trough via a pipe. The pipe can be a short straight pipe or a curved pipe, connecting the bottom of the first collection trough to the inside of the second collection trough 12, allowing impurities entering the first collection trough under gravity and fluid action to further settle into the second collection trough 12. The second collection trough 12 is detachably installed on the outer wall of the tapered tube 1 via threads or snap-fit. When impurities accumulate to a certain amount in the second collection trough 12, maintenance personnel can stop the machine, remove the second collection trough 12, clean the internal impurities, and reinstall it, thus avoiding frequent disassembly of the main flow channel components.

[0035] After passing through the end cover 8, the guide rod 5 continues to extend outwards from the device. The exposed section of the guide rod 5 is equipped with a boss, which is formed by turning or welding. The axial position of the boss corresponds one-to-one with the overall axial position of the self-cleaning structure. When the self-cleaning structure is in the locked position near the end cover 8, the protrusion of the boss relative to the outer surface of the end cover 8 is at a preset reference position. When the filter plate 4 is severely clogged, the self-cleaning structure, under the action of liquid pressure, overcomes the repulsive force between magnetic ring 10 and magnetic ring 11 and slides towards the tapered tube 1. The guide rod 5 moves inwards as a whole, and the protrusion of the boss relative to the outer surface of the end cover 8 decreases. Maintenance personnel can visually observe the changes in the position of the exposed section of the guide rod 5 and the boss to determine whether the self-cleaning structure has deviated from its normal reset position. When the boss is found to be continuously retracted and unable to automatically return to its initial position, it can be determined that the filter plate 4 is clogged and the self-cleaning structure cannot reset itself under magnetic repulsion, thus providing a direct indication for subsequent manual maintenance.

[0036] When the device is working, the liquid enters from the inlet of the conical tube 1, passes through multiple through holes on the end cover 8, and then flows into the inlet of the inner collection tube 2 to form an annular inlet flow field. Under normal operating conditions, the self-cleaning structure is held at one end near the end cover 8 by the magnetic repulsion formed by the magnetic ring 10 and the magnetic ring 2 11, as well as by its own weight. The slip ring 3 abuts against the limiting ring near the end cover 8, and the groove on the cleaning impeller 6 reliably engages with the locking block 9, locking the cleaning impeller 6 and preventing it from rotating. At this time, the solid-containing liquid passes through the through holes on the filter plate 4 under pressure. Solid particles are trapped on the inlet side of the filter plate 4 or adhere to the conical outer surface of the filter plate 4. Since the outer surface of the filter plate 4 is an inclined surface that converges downstream, the particles slide along the conical outer surface of the filter plate 4 towards the first collection tank under the action of gravity and liquid shear force. Some finer particles directly enter the first collection tank under the action of fluid disturbance, and then enter the second collection tank 12 through the pipe under the action of gravity, thus achieving centralized collection of impurities. In this state, the blades of the cleaning impeller 6 guide the flow field, which helps to form a more uniform flow velocity distribution around the filter plate 4 and slows down the occurrence of local excessive clogging.

[0037] When the operating time is long or the concentration of impurities in the influent is high, the through holes on the filter plate 4 are gradually blocked by particles and fibrous impurities, resulting in a pressure difference across the filter plate 4. As the blockage worsens, the axial hydraulic pressure acting on the filter plate 4 continuously increases. When the axial hydraulic pressure accumulates to a level sufficient to overcome the magnetic repulsion between magnetic ring 10 and magnetic ring 11, as well as the inertial force of the self-cleaning structure, the self-cleaning structure slides along the axis of the guide rod 5 towards the end closer to the conical tube 1. The slip ring 3 moves towards the end closer to the conical tube 1 until it abuts against the limiting ring near the conical tube 1. The groove on the cleaning impeller 6 automatically disengages from the locking block 9, and the cleaning impeller 6 changes from a locked state to a freely rotating state. During this process, the sliding cooperation between the guide bar and the slip ring 3 ensures that the self-cleaning structure remains coaxial during the sliding process, avoiding jamming. After the self-cleaning structure moves, the position of the filter plate 4 relative to the end cover 8 and the inner collection pipe 2 changes, the flow channel shape is locally adjusted, and the liquid flow impact in front of the blockage area is further enhanced. With the cleaning impeller 6 in the unlocked state, the high-velocity liquid in front of the filter plate 4 generates a fluid torque as it passes through the blades of the cleaning impeller 6, driving the cleaning impeller 6 to rotate rapidly around the axis of the guide rod 5. During the rotation of the cleaning impeller 6, the cleaning strips 7 at the front end of its blades rotate closely against the conical outer surface of the filter plate 4, scraping and agitating the particles, fibers, or sludge adhering to the outer surface of the filter plate 4. This causes the adhering substances to peel off from the surface of the filter plate 4 and slide along the conical outer surface of the filter plate 4 into the first collection trough under the action of centrifugal force and liquid flow scouring, and then enter the second collection trough 12 through the pipeline. Through this self-cleaning action, the filtration channels of the filter plate 4 can be restored without interrupting the pump operation, reducing the degree of clogging.

[0038] When the blockage of filter plate 4 is effectively cleared, the pressure difference before and after filter plate 4 decreases, and the axial hydraulic pressure acting on the self-cleaning structure decreases. Under the action of magnetic repulsion between magnetic ring 10 and magnetic ring 11, the self-cleaning structure gradually slides towards the end cap 8 in the opposite direction within the inner collection tube 2 until the slip ring 3 abuts against the limiting ring near the end cap 8 again. The groove on the cleaning impeller 6 is re-fitted onto the outer periphery of the locking block 9, realizing the re-locking of the cleaning impeller 6. At this time, the self-cleaning structure returns to its initial position, and the boss of the guide rod 5 also returns to the predetermined exposed position, and the device re-enters the steady-state filtration condition. Through the above structure and working process, the intelligent anti-clogging steady flow suction device of this embodiment achieves an organic combination of filter plate 4, cleaning impeller 6, self-cleaning structure sliding and magnetic reset in structure. It can automatically trigger the cleaning action when the filter plate 4 is blocked to a predetermined degree, and automatically reset after the blockage is cleared, reducing the frequency of manual intervention, reducing the number of shutdowns for maintenance, and improving the operational stability and continuity of the submersible pump system.

[0039] Example 2 like Figures 1 to 8As shown, this embodiment further optimizes the structure based on embodiment 1, focusing on constructing a stable and reliable magnetic repulsion reset mechanism and a two-stage collection structure to achieve controllable triggering and automatic reset of the self-cleaning structure, and effectively transfer the scraped impurities from the main channel to a collection space that is easy to maintain. Except for the following special description, the structure and cooperation relationship of the conical tube 1, inner collection tube 2, slip ring 3, filter plate 4, guide rod 5, cleaning impeller 6, cleaning strip 7, end cover 8, locking block 9, guide strip, and limiting ring are the same as those in embodiment 1, and will not be described again.

[0040] In this embodiment, a first collection trough is formed on the inner side of the inner collecting pipe 2 near the end cap 8. Specifically, the inner collecting pipe 2 has an annular step or annular flange that extends continuously in the circumferential direction on the inner wall of the section near the end cap 8, so that the slip ring 3 forms an annular cavity between the end limiting ring and the inner wall of the inner collecting pipe 2. This annular cavity is the first collection trough. The axial width of the first collection trough is determined according to the flow rate and impurity concentration, and is generally designed to be 0.05 to 0.3 times the inner diameter of the inner collecting pipe 2, so as to ensure that the cross-section of the main flow channel is not significantly reduced, while providing sufficient volume for temporarily storing solid impurities scraped off from the outer surface of the filter plate 4. The radial depth of the first collection trough is obtained by reducing the wall thickness of the collecting pipe 2 in this area or by locally machining grooves on the inner wall. Its depth is preferably in the range of several millimeters to several centimeters, so that the particles entering the first collection trough form a low-speed backflow zone in this area, reducing the probability of being carried away by the main flow.

[0041] To ensure the self-cleaning structure has a clear reset tendency and can automatically return to the locked position after the blockage pressure disappears, a magnetic ring 10 is fixedly connected inside the first collection trough. Magnetic ring 10 preferably adopts a ring-shaped permanent magnet structure and is fixed to the inner sidewall or bottom wall of the first collection trough by bonding, snapping, or embedding, so that magnetic ring 10 is coaxially arranged with the inner collection pipe 2. The inner diameter of magnetic ring 10 is larger than the outer diameter of slip ring 3, ensuring that slip ring 3 will not interfere with magnetic ring 10 when sliding axially. A magnetic ring 21 is fixedly connected to the inner wall of slip ring 3. Magnetic ring 211 is also a ring-shaped permanent magnet, and its axis coincides with the axis of the device. Magnetic ring 211 is firmly fixed to the inner circular surface of slip ring 3 by slot pressing or bonding. The magnetic poles of magnetic ring 10 and magnetic ring 11 are arranged opposite each other along the axial direction of the device. That is, when the end face of magnetic ring 10 facing slip ring 3 is the N pole, the end face of magnetic ring 11 facing magnetic ring 10 is also the N pole. This arrangement of opposite magnetic poles generates a stable magnetic repulsion force in the axial direction of the device. The direction of the magnetic repulsion force is determined by the direction of the line connecting magnetic ring 10 and magnetic ring 11. In this embodiment, the arrangement is such that a preload force is always applied to the self-cleaning structure in the direction of the end cover 8.

[0042] The materials for magnetic ring 10 and magnetic ring 11 can be high-performance rare-earth permanent magnet materials such as neodymium iron boron. Their magnetic energy product and dimensions are calculated and experimentally matched to the operating conditions. For example, given the pump suction flow rate, the effective area of ​​filter plate 4, the particle size of the easily clogged medium, and the allowable pressure difference range, those skilled in the art can select the diameter, height, and remanence of magnetic ring 10 and magnetic ring 11 based on the axial force balance relationship. This ensures that the self-cleaning structure remains in a locked position near the end cover 8 when the pressure difference before and after the filter plate 4 is below the threshold. When the filter plate 4 becomes clogged, causing the pressure difference to exceed the design threshold, the self-cleaning structure overcomes the magnetic repulsion between magnetic ring 10 and magnetic ring 11 under the axial pressure generated by the liquid and slides towards the conical tube 1, thereby releasing the locking state of the cleaning impeller 6. Through this design, the action point of the self-cleaning structure is determined by the magnetic repulsion force, enabling the self-cleaning action to be automatically triggered under a specific degree of clogging, without frequent action due to slight disturbances or instantaneous pressure fluctuations.

[0043] In this embodiment, the second collection trough 12 is located at the outer end of the tapered tube 1, corresponding to the axial position of the first collection trough. The second collection trough 12 is a hollow container structure, and its shape can be designed as a cylinder, a square tube, or other structural forms that facilitate installation and disassembly. It is detachably fixed to a special mounting base on the outer wall of the tapered tube 1 by means of flange bolts, clamps, or threads. The tapered tube 1 and the inner collection tube 2 are pre-drilled with through holes for connecting to the pipes in the area corresponding to the location of the first collection trough. The through holes are connected to pipe joints that are welded or threaded. The other end of the pipe joint is connected to the inlet of the second collection trough 12 through a pipe, thereby forming a material conveying channel between the first collection trough and the second collection trough 12. The pipe can be a metal pipe or a corrosion-resistant plastic pipe. Its inner diameter is selected according to the expected impurity particle size and concentration. It is necessary to ensure that the impurities can smoothly enter the second collection trough 12 under the action of gravity and a small amount of carrying fluid, while avoiding excessively large diameters that would waste structural layout space.

[0044] During operation, the solid-containing liquid enters the conical tube 1 through the through hole of the end cap 8, forming an axial flow in the inner collection tube 2, and then enters the pump body after passing through the through hole of the filter plate 4. Larger particles and fibrous impurities are intercepted by the filter plate 4 and adhere to the conical outer surface of the filter plate 4. Under the guidance of the conical geometry of the filter plate 4, these deposits slide down the outer surface of the filter plate 4 towards the first collection trough under the combined action of gravity and liquid shear force. When the cleaning impeller 6 is in the locked state, the cleaning strip 7 remains fixed with the cleaning impeller 6, still playing a role in turbulence and concentrating the flow lines on the outer surface of the filter plate 4, making it easier for the deposits to accumulate in the downstream area of ​​the filter plate 4 and slide into the first collection trough. When the filter plate 4 becomes clogged to a certain extent, the self-cleaning structure overcomes the repulsive force between the magnetic ring 10 and the magnetic ring 11 under the pressure difference and slides towards the conical tube 1. The cleaning impeller 6 is unlocked and rotates under the impact of the liquid flow. At this time, the cleaning strip 7 scrapes along the conical outer surface of the filter plate 4 in a circumferential manner, peeling off the stubbornly attached impurities and pushing them to the opening of the first collection tank.

[0045] Impurities entering the first collection trough are partially isolated from the main fluid flow channel within this annular cavity. Due to the significant reduction in flow velocity within the first collection trough, impurity particles gradually deposit under gravity and migrate downstream to the second collection trough 12 via a connected pipe. The second collection trough 12 has a larger volume than the first collection trough and can be designed with a conical or arc-shaped converging structure at the bottom to facilitate the concentrated settling of impurities to the bottom. During long-term operation, most of the solid impurities detached from the filter plate 4 eventually deposit in the second collection trough 12. The first collection trough mainly serves to intercept and buffer, preventing a large amount of solids from re-entering the main flow channel. During maintenance, operators do not need to disassemble the conical pipe 1, inner collection pipe 2, or other main flow channel components. They only need to remove the second collection trough 12 while the machine is stopped, empty or rinse the deposited impurities inside, and then reinstall it to restore its use, significantly reducing maintenance workload and downtime.

[0046] In this embodiment, the magnetic repulsion reset mechanism composed of magnetic ring 10 and magnetic ring 11 ensures that the self-cleaning structure has a clear equilibrium position and action threshold in the axial direction. When the filter plate 4 is not severely clogged, the self-cleaning structure is reliably held in the locked position under the action of magnetic repulsion, which is beneficial to maintaining the stability of the cleaning impeller 6 and the inlet flow field. When the filter plate 4 is clogged and the pressure difference reaches the set value, the self-cleaning structure automatically slides after the balance between the pressure difference and the magnetic repulsion is broken, triggering the rotation of the cleaning impeller 6 and the self-cleaning action. After the blockage is cleared, it automatically resets under the action of magnetic repulsion, forming a complete self-triggering and self-recovering cycle. The first collection trough inside the inner collection pipe 2 and the second collection trough outside the inner collection pipe 2 constitute a two-stage collection structure, which allows the scraped impurities to be transferred from the outer surface of the filter plate 4 to an independent settling space. This not only avoids the repeated circulation and secondary blockage of impurities in the main channel, but also provides a simple centralized cleaning method through the detachable second collection trough 12, improving the maintainability and long-term operational stability of the entire intelligent anti-clogging and stable flow suction device.

[0047] Example 3 like Figures 1 to 8 As shown, in this embodiment, an energy recovery and piezoelectric vibration cleaning unit is further added based on the structures described in Embodiments 1 and 2. This allows the intelligent anti-clogging and stable flow suction device to generate electricity by utilizing the hydrodynamic rotation of the cleaning impeller 6 when the filter plate 4 becomes clogged and triggers a self-cleaning action. The power management unit, composed of a controller and a supercapacitor, provides driving power to the vibration bar, thereby superimposing high-frequency micro-vibration cleaning on top of mechanical scraping cleaning, significantly improving the removal efficiency of impurities attached to the surface of the filter plate 4. In this embodiment, the structures and their interrelationships of the conical tube 1, inner collection tube 2, slip ring 3, filter plate 4, guide rod 5, cleaning impeller 6, cleaning bar 7, end cap 8, locking block 9, magnetic ring 10, magnetic ring 11, second collection trough 12, first collection trough, guide bar, and limiting ring are basically the same as in the aforementioned embodiments. Only the controller, electrical connection, and vibration control method are added on this basis. The aforementioned identical parts will not be described again.

[0048] To achieve high-frequency vibration cleaning of the filter plate 4 surface, in this embodiment, the cleaning strip 7 is arranged along the length of each blade of the cleaning impeller 6. Specifically, each blade of the cleaning impeller 6 has an mounting groove on its edge near the filter plate 4 that matches the arc-shaped outer edge of the blade. The cleaning strip 7 is embedded in the mounting groove in a strip shape and is reliably fixed to the blade of the cleaning impeller 6 by snap-fit, screws, or corrosion-resistant adhesive, so that the cleaning strip 7 extends continuously along the length of the blade at the outer edge of the blade. The cross-section of the cleaning strip 7 can be rectangular, trapezoidal, or arc-shaped, and the cross-sectional size is slightly larger than the gap between the conical outer surface of the filter plate 4 and the blade of the cleaning impeller 6, so that the cleaning strip 7 presses moderately against the outer surface of the filter plate 4 in the radial direction, so as to ensure that the surface of the filter plate 4 can be effectively scraped when the cleaning impeller 6 rotates.

[0049] The vibrating strip is made of piezoelectric material and is elongated in shape, with a length approximately equal to the effective length of the cleaning strip 7. The vibrating strip is embedded within the cleaning strip 7 along its length, achieving integration through pre-drilled slots within the cleaning strip 7 or pre-embedding the vibrating strip during molding. A flexible potting material can be used to fix the vibrating strip and the cleaning strip 7 together, combining vibration transmission and protective sealing. Electrical connection terminals extend from both ends of the vibrating strip, connecting to a controller located inside the guide rod 5 or outside the tapered tube 1 via water-resistant cables. Since the entire device operates in an underwater environment, to ensure the safety and reliability of the electrical components, the joints between the vibrating strip and the cleaning strip 7, and the connections between the wires and the cleaning impeller 6, are fully encapsulated with epoxy resin or silicone rubber to form a pressure-resistant and corrosion-resistant insulating protective layer, preventing direct contact between the liquid and the conductors.

[0050] The brushless motor installed between the cleaning impeller 6 and the guide rod 5 still adopts an external rotor brushless motor structure. The stator of the brushless motor is fixedly connected to the guide rod 5, and the rotor is fixedly connected to the cleaning impeller 6. In this embodiment, the brushless motor mainly operates in the power generation state. Its winding leads are led out through the hollow channel or reserved wire groove inside the guide rod 5. A sealed cable channel is provided inside the guide rod 5. The cable passes through the guide rod 5 and is electrically connected to the controller through the sealed cable connector at the end cover 8. The controller can be set in the drying area outside the tapered tube 1, or it can be set on the pump base connected to the tapered tube 1, and is isolated from the external environment by a protective shell. The controller includes a rectifier circuit, a voltage regulator circuit, a voltage detection unit, and a vibration drive unit. The three-phase output terminal of the brushless motor is connected to the three-phase rectifier bridge in the controller. After rectification and filtering, a DC output is formed to charge the subsequent supercapacitor and power the vibrating bar.

[0051] To achieve energy storage and on-demand release, a supercapacitor module is installed inside the controller. The capacity of the supercapacitor is selected based on the cleaning cycle, expected vibration duration, and brushless motor output power. When the brushless motor rotates the cleaning impeller 6, the electrical energy output is rectified and preferentially charges the supercapacitor. The controller monitors the voltage across the supercapacitor in real time via a voltage detection unit. When the supercapacitor voltage reaches a predetermined upper limit, the controller activates the vibration drive unit, applying the stored electrical energy in the supercapacitor to both ends of each vibrating bar through a boost or current-limiting drive circuit. This forms a high-frequency excitation voltage suitable for the piezoelectric material, causing the vibrating bar to generate mechanical vibration within a specific frequency range. The vibration drive unit can be implemented using a fixed-frequency oscillation circuit or a variable-frequency PWM inverter circuit. In this embodiment, a drive frequency close to the natural frequency of the vibrating bar is preferred to obtain a larger amplitude and higher energy utilization efficiency. The controller can also set a lower limit voltage for the supercapacitor. When the vibrating bar operation causes the supercapacitor voltage to drop to the lower limit, the controller automatically cuts off the power supply to the vibrating bar and reuses the brushless motor output to charge the supercapacitor, thus forming a charging-vibration-recharging cycle.

[0052] During the operation of the device, when the filter plate 4 is in a non-clogging or slightly clogged state, the self-cleaning structure is kept in a limited position near the end cover 8 under the magnetic repulsion of magnetic ring 10 and magnetic ring 2 11. The cleaning impeller 6 is locked by the groove on the cleaning impeller 6 cooperating with the locking block 9. At this time, the rotor of the brushless motor cannot rotate, the brushless motor is in a stationary state, the controller and the vibration bar do not work. The entire device only achieves the primary anti-clogging and flow stabilization function through the static filtration of the filter plate 4 and the gravity settling effect of the first collection tank and the second collection tank 12.

[0053] When the filter plate 4 is in operation for a period of time or when the concentration of impurities in the influent is high, the through holes are gradually covered by solid particles and fibrous impurities, and the effective cross-sectional area of ​​the flow channel in the inner collection pipe 2 decreases, resulting in a significant pressure difference across the filter plate 4. As the degree of blockage increases, the axial hydraulic pressure acting on the filter plate 4 and the self-cleaning structure gradually increases. When the axial hydraulic pressure is greater than the sum of the magnetic repulsion between magnetic ring 10 and magnetic ring 11 and the gravitational component of the self-cleaning structure, the self-cleaning structure slides along the axis of the guide rod 5 towards the end closer to the conical tube 1, and the slip ring 3 moves towards the limiting ring towards the end closer to the conical tube 1 until the slip ring 3 abuts against the limiting ring. The groove on the cleaning impeller 6 disengages from the locking block 9, and the cleaning impeller 6 changes from a locked state to a freely rotating state. During this process, the rotor of the brushless motor and the cleaning impeller 6 are released from their constraints. As the liquid continues to flow through the blades of the cleaning impeller 6, a large circumferential velocity component is formed under the guiding effect of the blades, which generates a hydrodynamic torque on the cleaning impeller 6, driving the cleaning impeller 6 and the brushless motor rotor fixedly connected to it to rotate around the guide rod 5, and the brushless motor enters the power generation working state.

[0054] The three-phase AC power output by the brushless motor at a certain speed is transmitted to the controller via the internal cable of the guide rod 5, where it is rectified into DC voltage by the rectifier circuit to charge the supercapacitor. During the initial self-cleaning phase, the supercapacitor voltage is below the vibration start threshold set by the controller. The controller only performs charging control, and the vibrating bar remains de-energized. The self-cleaning structure primarily relies on the mechanical scraping action of the cleaning impeller 6 for coarse cleaning. As some of the blockage impurities on the filter plate 4 are scraped off and slide into the first and second collection troughs 12, the liquid flowing through the cleaning impeller 6 maintains a high flow rate. The cleaning impeller 6 maintains a certain speed, and the brushless motor continues to generate electricity, causing the supercapacitor voltage to gradually increase. When the supercapacitor voltage reaches the upper limit threshold set by the controller, the controller switches to vibration mode, applying a high-frequency excitation voltage to the vibrating bar through the vibration drive unit.

[0055] When the vibrating strip is energized, it undergoes periodic expansion and contraction along its length under the piezoelectric effect. This deformation is transmitted to the entire cleaning strip 7 through the cleaning strip 7, which is tightly fitted with the vibrating strip, enabling the cleaning strip 7 to generate high-frequency micro-vibration in a direction perpendicular to the conical outer surface of the filter plate 4. During the continuous rotation of the cleaning impeller 6, the cleaning strip 7 rotates around the guide rod 5 with the cleaning impeller 6, forming a circumferential scraping trajectory on the outer surface of the filter plate 4. On the other hand, driven by the vibrating strip, it performs high-frequency reciprocating micro-displacement towards and away from the surface of the filter plate 4, causing periodic shear stress and peeling force to form inside the adhesion layer on the surface of the filter plate 4. This can more effectively break the adhesive bridges and mechanical embedding between particles and the orifices of the filter plate 4 and the surface of the filter plate 4, thereby peeling off some adhesives, gels, or fine fiber clumps that are difficult to remove by slow mechanical scraping alone. The peeled impurities slide along the conical outer surface of the filter plate 4 into the first collection trough under the action of centrifugal force and fluid shear force, and finally enter the second collection trough 12.

[0056] As the vibrating bar continues to operate, the electrical energy stored in the supercapacitor is gradually consumed. The controller monitors the supercapacitor's terminal voltage in real time. When the voltage drops to a set lower threshold, the controller automatically cuts off the power supply to the vibrating bar, the vibrating bar stops vibrating, and the controller recharges the supercapacitor using the output of the brushless motor. If the filter plate 4 still has some blockage at this time, the cleaning impeller 6 continues to rotate under the action of hydrodynamic torque, and the brushless motor continues to generate electricity. When the supercapacitor is fully charged again, the controller restarts the vibrating bar for high-frequency vibration cleaning. Through this cyclical process, mechanical scraping and high-frequency vibration peeling are alternately performed throughout the self-cleaning cycle, gradually reducing the blockage on the surface of the filter plate 4 and inside the through holes until the pressure difference across the filter plate 4 drops to the normal range.

[0057] Once the blockage in filter plate 4 is largely cleared, the pressure difference across filter plate 4 decreases significantly, reducing the axial hydraulic pressure acting on the self-cleaning structure. The magnetic repulsion between magnetic ring 10 and magnetic ring 11 regains dominance, causing the self-cleaning structure to slide along guide rod 5 towards the end cover 8 under the influence of this magnetic repulsion. Slip ring 3 returns to the limiting ring near end cover 8, and the groove on the cleaning impeller 6 is re-fitted onto the outer circumference of locking block 9, relocking the cleaning impeller 6. The brushless motor rotor stops rotating, and power generation ceases. After power generation stops, the charge in the supercapacitor is completely released or a small amount is retained to maintain the operation of the detection unit under the controller's set strategy. The vibrating bar remains stationary due to the loss of drive voltage. At this time, the exposed boss on guide rod 5 also returns to its initial position. Maintenance personnel can confirm that the self-cleaning structure has been reset to the locked state by observing the exposed length of guide rod 5.

[0058] This embodiment introduces an electrical system that integrates brushless motor power generation, supercapacitor energy storage, and controller-driven vibrating strips, building upon mechanical self-cleaning and magnetic reset. This achieves energy conversion from liquid flow energy to electrical energy and then to high-frequency vibrational mechanical energy. During the self-cleaning phase, the cleaning impeller 6 not only macroscopically scrapes the outer surface of the filter plate 4 through its blades and cleaning strips 7, but also supplements the microscopic peeling effect with high-frequency micro-vibrations generated by the vibrating strips. This effectively handles high-viscosity, fine-particle, or fibrous blockages, shortens self-cleaning time, and improves the filter plate 4's ability to restore permeability. Furthermore, since the driving power of the vibrating strips is entirely generated by the brushless motor and managed by the supercapacitor, it does not rely on external power sources or complex wiring. The entire electrical system is compact and well-sealed, suitable for long-term operation in submerged environments, thereby further improving the adaptive capability and reliability of the intelligent anti-clogging, flow-stabilizing suction device.

[0059] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An intelligent anti-clogging and flow-stabilizing suction device, characterized in that: The system includes a conical tube (1), with the larger diameter end of the conical tube (1) serving as the inlet. An inner collecting tube (2) is fixedly connected to the inner wall of the inlet of the conical tube (1). A slip ring (3) is slidably connected inside the inner collecting tube (2). A filter plate (4) is fixedly connected to the end of the slip ring (3) away from the conical tube (1). Multiple guide strips are provided between the inner collecting tube (2) and the slip ring (3). The guide strips are fixedly connected to the inner collecting tube (2). A guide rod (5) is fixedly connected to the end of the filter plate (4) away from the conical tube (1). The outer end of the guide rod (5) is rotatably connected to... A cleaning impeller (6) is provided. Multiple through holes are provided on the filter plate (4) along its axial direction. A brushless motor is provided between the cleaning impeller (6) and the guide rod (5). The brushless motor is an external rotor brushless motor. The stator of the brushless motor is fixedly connected to the guide rod (5), and the rotor is fixedly connected to the cleaning impeller (6). Each blade of the cleaning impeller (6) is fixedly connected to a cleaning strip (7) at the end near the filter plate (4). A vibrating strip is fixedly connected inside the cleaning strip (7). An end cap (8) is threaded onto the outer end of the water inlet of the tapered tube (1). A locking block (9) is fixedly connected to the cover (8) and the guide rod (5) at the corresponding positions. The cleaning impeller (6) is provided with a groove that matches the locking block (9) at the corresponding positions. The slip ring (3), filter plate (4), guide rod (5), and cleaning impeller (6) form a self-cleaning structure and slide together in the inner collection tube (2) along the axis of the guide rod (5). Limiting rings are fixedly connected to both ends of the inner wall of the inner collection tube (2) along its axis. A first collection trough is provided at one end of the inner collection tube (2) near the end cover (8). The first collection trough is fixedly connected to... A magnetic ring (10) is connected to the inner wall of the slip ring (3), and a magnetic ring (11) is fixedly connected to the inner wall of the slip ring (3). The magnetic ring (10) and the magnetic ring (11) have the same magnetic poles and are close to each other along their axial direction. A second collection trough (12) is provided at the position corresponding to the outer end of the tapered tube (1) and the inner collection tube (2). The second collection trough (12) is a hollow structure and is connected to the first collection trough through a pipe. The cleaning impeller (6) is an axial flow impeller. The guide rod (5) passes through the end cover (8) and extends to the outside of the end cover (8). The extended part of the guide rod (5) is provided with a boss.

2. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The filter plate (4) has a conical structure, and the end of the filter plate (4) with a larger diameter is set away from the conical tube (1). The conical structure of the filter plate (4) is used to make the impurities slide into the first collection tank and enter the second collection tank (12) through the pipe when the impurities pass through the filter plate (4) under the push of the liquid flow. The cleaning impeller (6) is set in contact with the end of the filter plate (4) away from the conical tube (1).

3. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The limiting rings are respectively fixed on the inner walls of the inner collection tube (2) at both ends of the axial direction. When the self-cleaning structure slides away from the tapered tube (1) to the limiting ring near the end cap (8), the groove on the cleaning impeller (6) cooperates with the locking block (9) to lock the rotation of the cleaning impeller (6). When the self-cleaning structure slides towards the tapered tube (1) to the other limiting ring, the cleaning impeller (6) disengages from the locking block (9) to allow the cleaning impeller (6) to rotate.

4. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The first magnetic ring (10) is fixed in the first collection trough, and the second magnetic ring (11) is fixed on the inner wall of the slip ring (3). The same magnetic poles of the first magnetic ring (10) and the second magnetic ring (11) are arranged opposite to each other along the axis of the device. The pre-tightening force towards the end cover (8) is applied to the self-cleaning structure by magnetic repulsion.

5. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The first collection trough is set in the annular cavity formed at one end of the inner collection pipe (2) near the end cap (8). The second collection trough (12) is detachably fixed to the outer end of the tapered pipe (1) and is set in the position corresponding to the first collection trough. It is used to receive the impurities transported by the first collection trough through the pipe.

6. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: It also includes a controller. The cleaning strip (7) is arranged along the length of the blade of the cleaning impeller (6). The vibration strip is embedded inside the cleaning strip (7) and electrically connected to the controller so that when the vibration strip is energized, it drives the cleaning strip (7) to generate high-frequency micro-vibration relative to the surface of the filter plate (4).

7. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The brushless motor is in a power generation state when the cleaning impeller (6) rotates with the liquid flow. Its output end is connected to a supercapacitor through a controller. The controller controls the on / off state of the vibrating bar according to the voltage state of the supercapacitor, so as to drive the vibrating bar to vibrate at high frequency within a preset voltage range.

8. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The end cap (8) has multiple through holes along its axial direction, and the diameter of the through holes on the end cap (8) is larger than the diameter of the through holes on the filter plate (4). The locking block (9) has a regular hexagonal cross-section along its axial direction. The vibration strip is made of piezoelectric material. Multiple guide strips are arranged at intervals along the circumference of the inner collecting tube (2). The inner side of the guide strip slides into contact with the outer side of the slip ring (3) to guide the axial sliding of the self-cleaning structure.

9. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The outer periphery of the locking block (9) is a regular hexagonal prism structure. The groove on the cleaning impeller (6) is a regular hexagonal hole that matches the cross-section of the locking block (9). The groove is fitted onto the outer periphery of the locking block (9) at the limiting position of the self-cleaning structure near the end cap (8) to lock the cleaning impeller (6).

10. The intelligent anti-clogging and flow-stabilizing suction device according to claim 1, characterized in that: The guide rod (5) extends to the boss on the outside of the end cover (8) to indicate the axial position of the self-cleaning structure. When the filter plate (4) is blocked, the self-cleaning structure cannot be reset to the limit position near the end cover (8) under the repulsive force of the magnetic ring one (10) and the magnetic ring two (11). The blockage state of the filter plate (4) can be judged by observing the exposed position of the guide rod (5).

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