Hydrodynamic self-rotating grid machine

Abstract

The utility model discloses a water conservancy self-rotation grid machine relates to water treatment technical field, solves the problem of poor support and unsmooth rotation of the existing non-powered grid machine. It includes support, central component, support component, rotating component and water inlet pipe, baffle, discharge chute, and central component contains bearing seat, central shaft, sleeve pipe, and the central shaft is installed obliquely, and the sleeve pipe can be equipped with mounting ring, fastening sleeve or reinforcing rib; the support component is connected with rotating component in "three pronged shape", and the load is dispersed; rotating component contains steel ring, rotating rod, gauze, and the driving force can be increased by adding the water baffle; the water inlet pipe supplies water obliquely, and the baffle scrapes off impurities, and the discharge chute automatically unloads. The equipment has no external power, and rotates by water flow energy and gravity, and the support is stable, and the rotation is smooth, and the interception efficiency is high, and is suitable for sewage treatment plant, pump station and other scenes.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to hydraulic self-rotating bar screens. Background Technology

[0002] Hydraulic bar screens, also known as bar screens, are core equipment in water conservancy projects and water treatment. Their main function is to intercept and remove solid impurities from water bodies, preventing floating and suspended objects from clogging subsequent pipes, pumps, heat exchangers, or treatment structures. These floating and suspended objects, such as branches, plastic bottles, weeds, and gravel, range in size from a few millimeters to tens of centimeters. This ensures the stable operation of the entire water treatment system and is widely used in urban sewage treatment plants, waterworks, pumping stations, hydropower stations, river management, and industrial wastewater treatment.

[0003] From the perspective of its core functions and working principle, it first achieves filtration through "bar interception"—a fence-like structure composed of parallel bar grids is set up at the inlet of the water channel or the entrance of the structure. When the water flows through the gaps between the bar grids, solid impurities are intercepted on the surface of the grid. Then, "mechanical cleaning" is used to remove the impurities. A motor drives a chain, wire rope or gear mechanism to move a cleaning rake along the surface of the grid, scraping up the intercepted impurities. Finally, through the "impurity discharge" stage, the cleaning rake lifts the impurities to the top of the equipment, and then unloads them into the collection tank by gravity or scraper, and finally transfers them for treatment. The whole process can achieve automatic cleaning, which greatly reduces labor costs, avoids problems such as water level rise and water flow obstruction caused by grid blockage, and effectively protects downstream equipment, reducing its wear and blockage risk.

[0004] Hydraulic bar screens can be categorized into several types based on different dimensions to suit various scenarios: By cleaning direction, rotary bar screens use a closed rotary chain for continuous, efficient cleaning, suitable for urban wastewater treatment plants and other environments with high levels of debris. Fixed bar screens require periodic movement of the cleaning rake for single-cycle cleaning, making them more suitable for small pumping stations and other intermittent operation scenarios with low debris levels. By installation angle, inclined bar screens are tilted at 30°-75° to the horizontal, saving space and are commonly used in most water treatment structures. Vertical bar screens are installed vertically, although they occupy more space... Small in size but with high resistance to cleaning, these machines are suitable for confined spaces such as underground pumping stations. Based on the bar spacing, coarse bar screens are used for primary filtration in water treatment systems to intercept large-particle impurities, medium bar screens for secondary filtration to intercept medium-particle impurities, and fine bar screens for high-precision filtration scenarios such as before the filter beds in waterworks. For special applications, underwater bar screens can be installed underwater in deep water and high-flow-rate environments, used in projects such as hydropower station inlets. Crushing bar screens have built-in crushing devices that can directly crush impurities, making them suitable for small pumping stations and other scenarios where external impurity transport is not required.

[0005] Its key components work together to ensure operation, including the bar screen body, cleaning mechanism, drive system, control system, and slag removal system. The cleaning mechanism includes cleaning rakes and chains / wire ropes for transmission; the rake teeth are mostly made of wear-resistant materials. The drive system consists of a geared motor and reducer, providing stable torque, and some systems can automatically start and stop. The control system includes a PLC control cabinet and a level difference sensor, enabling remote control and fault alarms. The slag removal system includes a slag removal trough and conveyor belt, and some systems are equipped with high-pressure water flushing devices to prevent impurities from adhering.

[0006] Compared to traditional manual bar screens, hydraulic bar screens offer significant advantages: manual bar screens rely on periodic cleaning with rakes, resulting in low efficiency, suitability only for small water volumes with few impurities, high long-term labor costs, and safety hazards. Hydraulic bar screens, on the other hand, can continuously and automatically clean, operating 24 hours a day, making them suitable for large water volumes with many impurities. While initial investment is higher, subsequent maintenance costs are lower, and the risk of manual contact with wastewater is reduced, making them the mainstream choice in the current water treatment field. Overall, hydraulic bar screens are the "first line of defense" in water treatment systems; their selection and maintenance directly affect the stability of subsequent processes. Precise matching based on actual scenarios and regular maintenance are essential to extend equipment lifespan.

[0007] Therefore, traditional hydraulic bar screens require external power, typically an electric motor. This method relies on a power source, and the installation of motors is often unsuitable for wastewater treatment and the removal of impurities from water bodies. To address this, existing technology also provides a non-powered bar screen. The main problems with this type of bar screen are insufficient support and uneven rotation. Utility Model Content

[0008] Based on this, the purpose of this application is to provide a hydraulic self-rotating bar screen machine, which has the advantages of good support and smooth rotation.

[0009] In one aspect of this application, a hydraulic self-rotating bar screen is provided, comprising a bracket, a central component, a support component, and a rotating component; the two ends of the central component are respectively mounted on the bracket, and the central component is inclined; one end of the support component is mounted on the central component, and the other end of the support component is mounted on the rotating component.

[0010] The central assembly includes a bearing housing, a central shaft, and a sleeve;

[0011] The sleeve is fastened to the central shaft, and both ends of the central shaft are respectively mounted on the bracket through the bearing seats;

[0012] The central axis is placed at an angle relative to the ground, with an angle of 20°-60°.

[0013] The support assembly includes a main support rod and a secondary support rod. The two ends of the main support rod are connected to the central assembly and the rotating assembly, respectively, and the two ends of the secondary support rod are connected to the main support rod and the rotating assembly, respectively.

[0014] This utility model of a hydraulic self-rotating bar screen offers smoother rotation. By using a sleeve around the central shaft, the shaft is less prone to deformation and eccentricity, ensuring structural stability and alignment, thus resulting in smoother rotation of the central component. The structural frame is stable; a hierarchical connection of "support bracket - central component - support component - rotating component" forms a complete and rigid frame, preventing loosening or misalignment caused by independent stress on individual components, ensuring long-term structural reliability. The unpowered self-rotation foundation; the tilted central component utilizes gravity to help impurities slide off the rotating component and provides a reasonable angle for water flow impact, working in conjunction with the stable support of the support component to lay a solid structural foundation for unpowered self-rotation. Load distribution; the combined connection of the main and auxiliary support rods, compared to a single support rod, distributes the weight of the rotating component and water flow impact force to the central component, preventing deformation of the support structure due to excessive local stress and extending the equipment's service life.

[0015] Furthermore, the central component also includes a mounting ring;

[0016] The mounting ring is securely installed on the sleeve;

[0017] One end of the main support rod is fastened to the sleeve by the mounting ring.

[0018] This preferred design improves connection accuracy. The mounting ring provides standardized and precise installation points for the main support rod of the support component, avoiding the "eccentricity" problem caused by welding deviations when the main support rod is directly welded to the sleeve. This ensures the coaxiality of the main support rod and the central component, reducing offset during the rotation of the rotating component. Connection strength is also enhanced. The mounting ring is fixed to the sleeve through fastening methods (such as welding or bolting), increasing the contact area between the main support rod and the sleeve, distributing the load transmitted by the main support rod, and preventing cracking at the connection point due to stress concentration during long-term use, thus improving structural stability.

[0019] Furthermore, the rotating assembly includes a first rotating steel ring, a rotating rod, an end annular rod, and a mesh screen;

[0020] The two ends of the rotating rod are respectively fixed to the first rotating steel ring and the end ring rod;

[0021] The rotating rod is installed on the inner wall of the first rotating steel ring, and the end of the rotating rod is flush with the end of the first rotating steel ring.

[0022] The plurality of the rotating rods are arranged in parallel at intervals;

[0023] The mesh is wrapped around the multiple rotating rods;

[0024] The ends of the main support rod and the secondary support rod are respectively connected to the rotating rod. Two secondary support rods are installed on one main support rod to form a trident shape. The trident shape is respectively connected to the three rotating rods.

[0025] This preferred design features a rigid rotating component. The first rotating steel ring, the end ring rod, and multiple parallel rotating rods form a "frame-like" rotating structure, preventing bending deformation under water flow impact or its own weight, ensuring structural stability during rotation. It also offers high-efficiency impurity interception. A mesh screen wraps around the rotating rods, forming a continuous filter surface that effectively intercepts solid impurities in the water. The multiple rotating rods are spaced apart to provide stable support for the mesh, preventing damage due to water flow impact and ensuring filtration accuracy. Furthermore, the support structure ensures uniform stress distribution. A "trident-shaped" support structure connects three rotating rods, distributing the load across different positions of the rotating component. This prevents excessive stress on a single support point, which could lead to deformation, and ensures the rotating component rotates concentrically around its central axis without jamming or shifting.

[0026] Furthermore, the rotating assembly also includes a retaining ring, which is mounted on the end face of the first rotating ring, and the end of the rotating rod abuts against the retaining ring.

[0027] This preferred design prevents water and impurities from flowing back; the baffle ring is installed at the end of the rotating rod and located at the end of the first rotating ring, which is used to block water and impurities from flowing back to a higher position, and has a good limiting and gathering effect.

[0028] Furthermore, the rotating assembly also includes a second rotating steel ring, which is sleeved on the plurality of rotating rods, and the first rotating steel ring and the second rotating steel ring are respectively located at both ends of the rotating rods;

[0029] The second rotating steel ring presses the mesh tightly against the rotating rod;

[0030] The width of the first rotating steel ring is greater than the width of the second rotating steel ring.

[0031] This preferred design ensures reliable mesh fixation. The second and first rotating steel rings clamp the mesh from both ends of the rotating rod, preventing edge detachment or displacement of the mesh under water flow impact or impurity friction, thus ensuring the integrity of the filter surface and maintaining a stable interception effect. The rotating assembly is lightweight; the first rotating steel ring is wider, while the second rotating steel ring is narrower. This reduces the overall weight while maintaining the rigidity of the rotating assembly, lowering the load on the central shaft and bearing housing, improving rotational smoothness, and extending the lifespan of core components.

[0032] Furthermore, the central component also includes a fastening sleeve, which is fixedly connected to the mounting ring and securely fitted onto the sleeve;

[0033] The end of the main support rod is connected to the fastening sleeve;

[0034] The two sets of support components are arranged in parallel, and the two sets of support components are respectively fastened to the sleeve through the corresponding fastening sleeve.

[0035] This preferred design doubles connection stability; the fastening sleeve and mounting ring work together to fix the component, achieving "double fastening" through the sleeve connecting to the sleeve and the mounting ring for positioning. This enhances the connection strength with the sleeve and prevents loosening at the connection point when the main support rod transmits load, making it particularly suitable for scenarios with high flow rates and high impurity content. Load distribution is also more uniform; the two sets of parallel support components are each connected to the sleeve via independent fastening sleeves, distributing the load of the rotating component along the length of the sleeve to two points. This avoids sleeve bending caused by concentrated force on a single support component, further improving the structural stability of the central component.

[0036] Furthermore, the rotating assembly also includes a baffle plate, which is fixed to the inner wall of the first rotating steel ring, and a plurality of the baffle plates are arranged around the inner wall of the first rotating steel ring.

[0037] This preferred design enhances the self-rotation driving force. The baffle plate increases the contact area between the water flow and the rotating component. When the water flow impacts the rotating component, the baffle plate can "bear" more water flow thrust, converting it into stronger rotational torque. Even in low-flow-rate scenarios, it can drive the rotating component to rotate smoothly, solving the defect of traditional unpowered bar screens that "cannot rotate at low flow rates." The water flow guidance is optimized; the baffle plate is set around the inner wall of the first rotating steel ring, which can guide the water flow along the tangential direction of the rotating component, avoiding energy waste caused by the water flow impacting the rotating component perpendicularly, improving water flow driving efficiency, and reducing rotational resistance.

[0038] Furthermore, the central assembly also includes a reinforcing rib, which is mounted on the sleeve along the length of the sleeve;

[0039] Multiple reinforcing ribs are arranged around the sleeve.

[0040] This preferred design enhances the sleeve's bending resistance; the reinforcing ribs are arranged along the length of the sleeve and distributed around it, which can significantly enhance the sleeve's cross-sectional moment of inertia, preventing the sleeve from bending and deforming due to the weight of the rotating component and the impact of water flow, ensuring the coaxiality of the central axis, and maintaining the stable rotation of the rotating component.

[0041] Furthermore, it also includes a water inlet pipe, the outlet of which is obliquely disposed relative to the rotating assembly; and the water inlet pipe is installed at one end of the rotating assembly at a higher position.

[0042] This preferred design maximizes water flow drive efficiency. The inlet pipe outlet is angled, allowing water to impact the rotating component along its rotation direction, directly converting it into rotational power. This avoids the "reverse resistance" caused by vertical water flow impact, improving the efficiency of non-powered drive. Impurity interception is more thorough. The inlet pipe is installed at the higher end of the rotating component, ensuring the water flows fully across the mesh filter surface as it descends, preventing short-circuiting and ensuring that impurities in the water are effectively intercepted, thus enhancing the filtration effect.

[0043] Furthermore, it also includes a baffle plate and a discharge chute, the baffle plate being mounted on the lower side of the sleeve and the discharge chute being mounted on the bracket and located below the lower end of the central assembly.

[0044] This preferred design prevents axial displacement; the baffle restricts the axial displacement of the rotating rod, preventing the central component from shifting due to vibration and water flow impact during long-term rotation, thus ensuring the stability of the relative position of the central component and the support. Impurities are automatically discharged; impurities that rotate to a lower position are drawn into the discharge chute by gravity and automatically slide into the external collection device, eliminating the need for regular manual cleaning, reducing labor costs, and preventing grid blockage caused by impurity accumulation.

[0045] Compared with existing technologies, the hydraulic self-rotating bar screen of this invention has the following advantages:

[0046] 1) Strong support stability. The three-pronged support structure of "main support rod + secondary support rod" combined with fastening sleeves or reinforcing ribs effectively distributes the load of the rotating components, preventing them from shifting or deforming. The sleeve and bearing seat design of the central component ensures the rigidity of the overall structure and makes it less prone to damage during long-term use.

[0047] 2) High smoothness of rotation. The central shaft is supported by a bearing housing, resulting in low frictional resistance; the inclined water supply pipe and baffle design maximize the water flow driving force, enabling smooth rotation even in low flow rate scenarios; the baffle ring design improves the water blocking and water collection effect, promoting rotation.

[0048] 3) Energy-saving without power. It does not rely on a motor drive and rotates entirely by the kinetic energy of water flow and gravity. It is suitable for scenarios without power supply, while saving on electricity costs and motor maintenance costs, which is in line with the concept of green environmental protection.

[0049] 4) Highly efficient impurity interception and discharge. The mesh size can be adapted as needed, ensuring high interception accuracy; the baffles enhance the impact area of ​​the inlet pipe, increasing the water flow thrust and promoting the rotation of the bar screen; the discharge chute assists in unloading, preventing impurity accumulation and ensuring continuous filtration effect.

[0050] 5) Wide adaptability. The tilt angle of the central axis can be adjusted within the range of 20°-60°, and the mesh aperture and the size of the rotating components can be customized according to the water volume and impurity particle size, making it suitable for various scenarios such as sewage treatment, river management, and pumping station water intake.

[0051] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0052] Figure 1 This is a front view of a hydraulic self-rotating bar screen machine according to an exemplary embodiment of this application;

[0053] Figure 2 This is a three-dimensional structural diagram of a hydraulic self-rotating bar screen machine according to an exemplary embodiment of this application;

[0054] Figure 3 This is a three-dimensional structural schematic diagram of a hydraulic self-rotating bar screen machine according to an exemplary embodiment of this application, from another perspective.

[0055] Figure 4 This is a three-dimensional structural diagram of a hydraulic self-rotating bar screen (excluding support frame, screen, and bearing seat) according to an exemplary embodiment of this application;

[0056] Figure 5 This is a front view of a hydraulic self-rotating bar screen (excluding support frame, screen, and bearing housing) according to an exemplary embodiment of this application;

[0057] Figure 6 This is a schematic diagram illustrating the relative positional relationship between the water inlet pipe, the rotating rod, and the baffle, as exemplarily described in this application.

[0058] Figure 7 The schematic diagram of the water inlet pipe impact rotating rod and water baffle is an example of the present application.

[0059] Figure 8 This is a three-dimensional structural diagram illustrating the assembly structure of the central component and the support component, which are exemplary components of this application.

[0060] Figure 9 This is a three-dimensional structural diagram of the assembly structure of the mounting ring, fastening sleeve, and support assembly, which is an example of this application.

[0061] Figure 10 This is a three-dimensional structural diagram of a hydraulic self-rotating bar screen machine according to another exemplary embodiment of this application;

[0062] Figure 11 This is a three-dimensional structural schematic diagram of a hydraulic self-rotating bar screen machine according to another exemplary embodiment of this application;

[0063] Figure 12 This is a three-dimensional structural diagram of a hydraulic self-rotating bar screen (excluding support frame, screen, and bearing seat) according to another exemplary embodiment of this application. Detailed Implementation

[0064] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0065] Please see Figures 1-12 As shown, the hydraulic self-rotating bar screen of this utility model includes a bracket 20, a central component 10, a support component 30, and a rotating component 40. The two ends of the central component 10 are respectively fixedly installed on the bracket 20, and the central component 10 is set in an inclined state to utilize gravity to assist in the discharge of impurities and drive the water flow. One end of the support component 30 is fixedly connected to the central component 10, and the other end is connected to the rotating component 40, providing stable support for the rotating component 40. The rotating component 40 can rotate freely around the axis of the central component 10, used to intercept water impurities and achieve self-rotation with the water flow.

[0066] 1) Central component 10: core support and rotation reference.

[0067] The central component 10 serves as the "core skeleton" of the equipment, including a bearing housing 12, a central shaft 11, and a sleeve 13. Some embodiments also include a mounting ring 15, a fastening sleeve 16, or reinforcing ribs 17. The specific structure is as follows:

[0068] Bearing housing 12: There are two sets, which are fixedly installed on the top of both ends of the bracket 20 to provide rotatable support for the central shaft 11, reduce the frictional resistance when the central shaft 11 rotates, and ensure smooth rotation.

[0069] The central shaft 11 is made of high-strength alloy steel, with its two ends respectively passing through the inner rings of two sets of bearing seats 12, and can rotate freely around its own axis. The central shaft 11 is placed at an inclination of 20°-60° relative to the ground. The design basis of this inclination angle is: ① When it is less than 20°, impurities are easy to accumulate on the surface of the rotating component 40 and are difficult to slide off by gravity; ② When it is greater than 60°, the impact force of the water flow on the rotating component 40 is insufficient, which can easily lead to rotation jamming; the preferred inclination angle is 30°-45°, which takes into account both slag discharge efficiency and rotation driving force.

[0070] Sleeve 13: Made of stainless steel, it is fastened to the outside of the central shaft 11 by welding or interference fit. On the one hand, it prevents the central shaft 11 from directly contacting sewage and reduces corrosion; on the other hand, it provides an installation reference for the support component 30, distributes the force on the support component 30, strengthens the structural stability and strength of the central shaft 11, and ensures smooth rotation of the central component 10.

[0071] Mounting ring 15: Made of annular steel plate, it is fixed to the outer wall of sleeve 13 by welding, interference fit or bolt fastening, and is set at intervals along the length of sleeve 13. It is used to provide precise installation points for the main support rod 31 of support assembly 30 and ensure the connection strength between the main support rod 31 and sleeve 13.

[0072] In a preferred embodiment, an additional structure is provided: a fastening sleeve 16; integrally formed or welded to the mounting ring 15, with its inner wall fastened to the outer wall of the sleeve 13 by set screws, or welded to the sleeve 13; the end of the main support rod 31 is fixed to the fastening sleeve 16 by welding, further enhancing the connection stability between the main support rod 31 and the sleeve 13, and avoiding loosening of the connection due to vibration during long-term use. Simultaneously, two sets of support components 30 are arranged parallel to each other along the length of the sleeve 13, each set of support components 30 being connected to the sleeve 13 by an independent fastening sleeve 16, forming a "double support" structure to distribute the weight load of the rotating component 40.

[0073] In another preferred embodiment, an additional structure is provided: reinforcing ribs 17; made of strip steel plate, welded to the outer wall of sleeve 13 along the length direction of sleeve 13, and multiple reinforcing ribs 17 are evenly distributed around the circumference of sleeve 13; the setting of reinforcing ribs 17 can significantly improve the bending strength of sleeve 13, avoid deformation of sleeve 13 due to the gravity of rotating component 40 or water flow impact, and thus ensure the long-term stability of central component 10.

[0074] 2) Support component 30: stably transmits load and prevents the rotating component 40 from shifting.

[0075] The support assembly 30, which serves as a "bridge" connecting the central assembly 10 and the rotating assembly 40, includes a main support rod 31 and a secondary support rod 32, with the following specific structure:

[0076] Main support rod 31: Made of seamless steel pipe, one end is fixed to the mounting ring 15 of the central component 10 by welding or bolting, and the other end extends to the rotating rod 41 of the rotating component 40; multiple main support rods 31 are evenly arranged along the circumference of the mounting ring 15 to ensure that the load of the rotating component 40 is evenly transmitted to the central component 10.

[0077] like Figure 9 In the example shown, the main support rod 31 and the mounting ring 15 are fastened together by bolts. Figure 9 In the middle, a through hole A is formed on the main support rod 31. The bolt passes through the through hole A and through the mounting ring 15, and then the main support rod and the mounting ring are installed and fastened.

[0078] In other examples, the main support rod 31 is welded to the mounting ring 15, and the end of the main support rod 31 is welded to the fastening sleeve 16.

[0079] Secondary support rod 32: Made of seamless steel pipe, shorter than the main support rod 31; two secondary support rods 32 are installed on each main support rod 31, and the main support rod 31 and the two secondary support rods 32 form a "trident" structure; the main support rod 31 is the "main trunk", and the two secondary support rods 32 are the "branches", with an included angle of 30°-60°; the three ends of the "trident" structure are respectively welded and fixed to the three adjacent rotating rods 41 of the rotating assembly 40.

[0080] The total number of main support rods 31 and secondary support rods 32 is equal to the number of rotating rods 41.

[0081] Advantages: Traditional non-powered bar screen machines mostly adopt the "single rod single connection" method, which disperses the support points and concentrates the force, making it easy to deform the rotating component 40; the "three-pronged" support structure of this utility model connects the rotating rod 41 through three support points, which can effectively disperse the force on the rotating component 40, avoid the rotating component 40 from shifting or deforming during rotation, and significantly improve the support stability.

[0082] 3) Rotating component 40: The core actuator for intercepting impurities and ensuring smooth rotation.

[0083] The rotating assembly 40 includes a first rotating steel ring 42, a rotating rod 41, an end annular rod 43, and a mesh 45. Some embodiments also include a retaining ring 46, a second rotating steel ring 44, or a water-blocking plate 70. The specific structure is as follows:

[0084] The first rotating steel ring 42 and the second rotating steel ring 44 are both made of stainless steel round steel bent and welded, wherein the width of the first rotating steel ring 42 is greater than that of the second rotating steel ring 44; the two are located at the two ends of the rotating assembly 40 respectively.

[0085] Rotating rod 41: Made of stainless steel, it can be round or square, and the number is adapted according to the processing capacity of the equipment. Both ends are fixed to the inner wall of the first rotating steel ring 42 and the outer wall of the end ring rod 43 by welding, respectively. The rotating rods 41 are arranged parallel to each other at intervals along the circumference of the first rotating steel ring 42, and the ends of the rotating rods 41 are flush with the end face of the first rotating steel ring 42 to ensure that the end face of the rotating assembly 40 is flat.

[0086] The retaining ring 46 is made of annular steel plate and welded to the outer side of the end face of the first rotating steel ring 42. The end of the rotating rod 41 abuts against the inner wall of the retaining ring 46. It can not only enhance the structural stability of the first rotating steel ring 42, but also block water and impurities, collect water in the space enclosed by the retaining ring 46 and the first rotating steel ring 42, and promote the rotation of the rotating component 40.

[0087] Mesh 45: Made of high-strength nylon mesh, canvas mesh or stainless steel mesh 45, it is wrapped around the outside of multiple rotating rods 41, and the edge of the mesh 45 is pressed and fixed by the second rotating steel ring 44. When the second rotating steel ring 44 is welded to the rotating rod 41, the edge of the mesh 45 is sandwiched between the two. The function of the mesh 45 is to intercept solid impurities in the water while allowing water to flow through, so as to achieve "filtration-rotation" in sync.

[0088] In some preferred embodiments, an additional structure is also provided: baffles 70: made of rectangular steel plates, the number of which is the same as the number of rotating rods 41, and welded to the inner wall of the first rotating steel ring 42 respectively, and each baffle 70 is located between two adjacent rotating rods 41, and multiple baffles 70 are evenly distributed around the inner wall of the first rotating steel ring 42; when water flows and impacts the rotating component 40, the baffles 70 can increase the force-bearing area of ​​the water flow, forming a larger rotational torque, effectively solving the problem of the rotating component 40 "not being able to rotate" in low flow rate scenarios, and further improving the smoothness of rotation.

[0089] 4) Auxiliary components: Improve slag discharge efficiency and equipment adaptability.

[0090] To further optimize equipment performance, this utility model also includes an inlet pipe 50, a baffle plate 14, and a discharge chute 60, as detailed below:

[0091] Water inlet pipe 50: Made of PVC or stainless steel pipe, its outlet end is set at an angle relative to the rotating component 40, and the water inlet pipe 50 is fixedly installed at the higher end of the rotating component 40; this design allows the water flow to impact the rotating component 40 at an angle, maximizing the driving efficiency of the water flow and avoiding energy waste caused by the vertical impact of the water flow.

[0092] Baffle 14: Made of stainless steel plate, it is fixed to the lower outer wall of the sleeve 13 of the central component 10 by welding to prevent displacement of the central component 10.

[0093] Discharge chute 60: Made of bent stainless steel plate, fixedly installed on bracket 20 and located directly below the lower end of central component 10; impurities scraped off or rotated downward with rotating component 40 can fall into discharge chute 60 under gravity and slide along chute into external collection device, realizing automatic discharge of impurities without manual cleaning.

[0094] Several embodiments are briefly outlined below for ease of understanding.

[0095] Example 1: Basic self-rotating bar screen machine for hydraulic engineering.

[0096] This embodiment is a basic scheme, including a bracket 20, a central component 10, a support component 30, a rotating component 40, a water inlet pipe 50, a baffle plate 14, and a discharge chute 60. The specific structural parameters are as follows:

[0097] 1) Bracket 20: The bottom is placed stably on the ground.

[0098] 2) Central assembly 10: central shaft 11, bearing housing 12, sleeve 13, mounting ring 15.

[0099] 3) Support component 30: main support rod 31, secondary support rod 32.

[0100] 4) Rotating assembly 40: First rotating steel ring 42, rotating rod 41, retaining ring 46, mesh 45;

[0101] 5) Auxiliary components: water inlet pipe 50, baffle plate 14, discharge chute 60.

[0102] Among them, the water inlet pipe 50 has an outlet at a tangent angle of 20° to the rotating component 40 and is installed at the higher end of the rotating component 40;

[0103] Discharge chute 60: made of stainless steel, with an inclination angle of 30°, located below the lower end of the central component 10, and mounted on the bracket 20.

[0104] Brief description of working principle:

[0105] like Figure 6 and Figure 7 ,exist Figure 6 and Figure 7 In the middle, its perspective is perpendicular to the central axis; the water flows out from the inlet pipe 50 and impacts the rotating rod 41 and the screen 45 along the tangential direction of the rotating component 40, causing the rotating component 40 to rotate around the central axis 11.

[0106] Impurities in the water flow are intercepted by the mesh 45 and moved downwards as the rotating component 40 rotates.

[0107] When impurities move to the lower side of the central component 10, they are detached from the mesh 45 under the action of gravity, or are scraped off by the baffle 14 and fall into the discharge chute 60 below, thus completing the interception and treatment of impurities.

[0108] Example 2: Includes fastening sleeve 16, second rotating steel ring 44, and water baffle 70;

[0109] Based on Example 1, this embodiment adds a fastening sleeve 16 and a water baffle 70. The specific improvements are as follows:

[0110] The central component 10 is equipped with a new fastening sleeve 16, and the rotating component 40 is equipped with a new second rotating steel ring 44 and a water baffle 70.

[0111] Advantages: The fastening sleeve 16 prevents the main support rod 31 from loosening and enhances the installation stability of the mounting ring 15 and the sleeve 13. The baffle plate 70 increases the water flow force area. In low flow rate scenarios, the rotation speed of the rotating component 40 is increased compared to Example 1, and there is no jamming phenomenon.

[0112] Example 3: with reinforcing ribs 17.

[0113] This embodiment adds a reinforcing rib 17 to the existing embodiment 1.

[0114] Advantages: The reinforcing ribs 17 improve the bending strength of the sleeve 13. When the weight of the rotating component 40 increases or the water flow impact force is large, the sleeve 13 does not deform and the rotation accuracy of the central shaft 11 remains stable.

[0115] The advantages of this utility model are as follows:

[0116] 1) Stable and reliable support: The load is distributed by the three-pronged structure of "main support rod 31 + secondary support rod 32", and the connection is strengthened by mounting ring 15 and fastening sleeve 16. The addition of reinforcing ribs 17 improves the bending resistance of sleeve 13, avoids the displacement and deformation of rotating component 40, and ensures the structural rigidity for long-term operation.

[0117] 2) Smooth and efficient rotation: The central shaft 11 is supported by the bearing seat 12 to reduce drag. The water inlet pipe 50 supplies water at an angle and the baffle plate 70 enhances the driving force of the water flow. It can rotate stably even in low flow rate scenarios, solving the problem of jamming in traditional non-powered equipment.

[0118] 3) Powerless, energy-saving, and widely adaptable: It does not require a motor and runs on the flow of water and gravity, saving electricity and motor maintenance costs. It is suitable for harsh environments such as no power supply or high humidity and high corrosion, where motors are difficult to install, such as remote pumping stations and river management sites.

[0119] 4) Thorough impurity interception and discharge: The mesh 45 forms a continuous filter surface, and the discharge chute 60 enhances impurity discharge, avoids accumulation and blockage, and ensures filtration accuracy and continuous processing capacity.

[0120] 5) Durable and easy to maintain: The stainless steel material and reinforced structural design reduce corrosion and wear, the parts are firmly connected, the failure frequency is reduced, the equipment life is extended, and the amount of maintenance work is reduced.

[0121] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A hydraulic self-rotating bar screen, characterized in that: It includes a bracket, a central component, a support component, and a rotating component; the two ends of the central component are respectively mounted on the bracket, and the central component is inclined; one end of the support component is mounted on the central component, and the other end of the support component is mounted on the rotating component. The central assembly includes a bearing housing, a central shaft, and a sleeve; The sleeve is fastened to the central shaft, and both ends of the central shaft are respectively mounted on the bracket through the bearing seats; The central axis is placed at an angle relative to the ground, with an angle of 20°-60°. The support assembly includes a main support rod and a secondary support rod. The two ends of the main support rod are connected to the central assembly and the rotating assembly, respectively, and the two ends of the secondary support rod are connected to the main support rod and the rotating assembly, respectively.

2. The hydraulic self-rotating bar screen according to claim 1, characterized in that: The central component also includes a mounting ring; The mounting ring is securely installed on the sleeve; One end of the main support rod is fastened to the sleeve by the mounting ring.

3. The hydraulic self-rotating bar screen according to claim 2, characterized in that: The rotating assembly includes a first rotating steel ring, a rotating rod, an end ring rod, and a mesh screen; The two ends of the rotating rod are respectively fixed to the first rotating steel ring and the end ring rod; The rotating rod is installed on the inner wall of the first rotating steel ring, and the end of the rotating rod is flush with the end of the first rotating steel ring. The plurality of the rotating rods are arranged in parallel at intervals; The mesh is wrapped around the multiple rotating rods; The ends of the main support rod and the secondary support rod are respectively connected to the rotating rod. Two secondary support rods are installed on one main support rod to form a trident shape. The trident shape is respectively connected to the three rotating rods.

4. The hydraulic self-rotating bar screen according to claim 3, characterized in that: The rotating assembly further includes a retaining ring, which is installed on the end face of the first rotating steel ring, and the end of the rotating rod abuts against the retaining ring.

5. The hydraulic self-rotating bar screen according to claim 3, characterized in that: The rotating assembly further includes a second rotating steel ring, which is sleeved on the plurality of rotating rods, and the first rotating steel ring and the second rotating steel ring are respectively located at both ends of the rotating rods; The second rotating steel ring presses the mesh tightly against the rotating rod; The width of the first rotating steel ring is greater than the width of the second rotating steel ring.

6. The hydraulic self-rotating bar screen according to claim 2, characterized in that: The central component also includes a fastening sleeve, which is fixedly connected to the mounting ring and fastened onto the sleeve. The end of the main support rod is connected to the fastening sleeve; The two sets of support components are arranged in parallel, and the two sets of support components are respectively fastened to the sleeve through the corresponding fastening sleeve.

7. The hydraulic self-rotating bar screen according to claim 3, characterized in that: The rotating assembly also includes a baffle plate, which is fixed to the inner wall of the first rotating steel ring, and a plurality of the baffle plates are arranged around the inner wall of the first rotating steel ring.

8. The hydraulic self-rotating bar screen according to claim 2, characterized in that: The central component also includes a reinforcing rib, which is mounted on the sleeve along the length of the sleeve; Multiple reinforcing ribs are arranged around the sleeve.

9. The hydraulic self-rotating bar screen according to any one of claims 1-8, characterized in that: It also includes a water inlet pipe, the outlet of which is obliquely arranged relative to the rotating assembly; and the water inlet pipe is installed at one end of the rotating assembly at a higher position.

10. The hydraulic self-rotating bar screen according to claim 9, characterized in that: It also includes a baffle plate and a discharge chute, the baffle plate being mounted on the lower side of the sleeve and the discharge chute being mounted on the bracket and located below the lower end of the central assembly.

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