A river pollution-blocking steel gate

Abstract

The present invention relates to the field of gate technology and discloses a river pollution-blocking steel gate, comprising: a gate frame provided with a vertical lifting channel and a symmetrically arranged cylindrical water collecting chamber; a solid gate body, movably installed in the vertical lifting channel by a lifting mechanism, and a lifting guide block provided on its side wall, which slides with a guide slide groove on the side wall of the gate frame; when the gate of the present application descends, the gravitational potential energy is converted into mechanical energy of a rotating flushing cylinder through a linkage mechanism, and the water flow is simultaneously compressed by a piston booster unit to generate 0.6-0.8MPa high-pressure water energy; when the gate rises, the piston resets to form a negative pressure, and the filtered water reserve is automatically sucked in. No external power is required throughout the process, and the cleaning system is driven only by the physical movement of the gate lifting and lowering, without the need for an additional water pump or motor, thus saving energy and reducing operating costs.

Description

Technical Field

[0001] The present invention relates to the technical field of gates, in particular to a river pollution-blocking steel gate. Background Art

[0002] Pollution-blocking steel gates are critical features of water conservancy projects, used to intercept floating debris in rivers, regulate water levels, and control water flows. Traditional gates typically utilize hydraulic or electric opening and closing systems, powered by an external power source (such as the power grid or diesel generators) to achieve their lifting and sealing functions. In recent years, with the advancement of intelligent and automated technologies, some gates have incorporated remote monitoring, water level sensors, and automatic opening and closing devices, improving operational efficiency. However, existing technologies still have significant drawbacks: They are highly energy-dependent: The opening, closing, and self-cleaning systems of traditional gates rely on external power from the power grid or diesel generators, increasing energy costs while also presenting issues such as unstable power supply and high carbon emissions. Maintenance is complex and costly: Over long-term operation, silt and floating debris accumulate at the bottom of gates, requiring regular manual cleaning or high-pressure water pump flushing. Furthermore, sealing structures (such as rubber waterstops) are prone to leakage due to wear and aging, requiring frequent replacement. Functionality is limited: Most gates only provide basic opening and closing functions, lacking self-cleaning, anti-clogging, and dynamic sealing capabilities, making them unsuitable for highly polluted river environments.

[0003] The limitations of existing pollution-control steel gates are mainly reflected in the following three aspects: the contradiction between energy consumption and environmental protection: traditional gates rely on external power supply, which not only increases operating costs, but also limits their application in remote areas or areas with unstable power grids; low efficiency of the self-cleaning system: the self-cleaning function of most gates relies on independent water pumps or high-pressure water guns, which require additional power devices, resulting in increased system complexity and failure rate; insufficient sealing performance: the flat sealing structure of traditional gates is prone to rubber aging due to dynamic friction, and the design of the side and bottom sealing strips often cannot adapt to complex working conditions.

[0004] To address these issues, closed-loop energy-supply technology has become a key approach to improving the performance of wastegates. This technology converts the mechanical energy of gate raising and lowering into hydraulic or electrical energy to power the self-cleaning system and sealing mechanism, achieving a "zero external energy" operation mode. For example, a piston booster unit compresses the water in the water collection chamber as the gate descends, generating a high-pressure water flow that drives the rotating flushing cylinder. Simultaneously, a linkage mechanism converts gate motion directly into mechanical energy, eliminating the need for additional power units. This closed-loop design not only addresses energy consumption but also optimizes gate durability and sealing effectiveness through dynamic sealing technologies (such as double-lip seals and convex arc seals).

[0005] In summary, the existing pollution-control steel gates have significant shortcomings in energy utilization, maintenance convenience and sealing performance, and urgently need to achieve functional upgrades and sustainable development through energy self-supply closed-loop technology. Summary of the Invention

[0006] The purpose of the present invention is to provide a river pollution-blocking steel gate to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a river pollution-blocking steel gate, comprising:

[0008] The gate frame is equipped with vertical lifting channels and symmetrically arranged cylindrical water collection chambers;

[0009] The solid gate body is movably installed in the vertical lifting channel through the lifting mechanism. The side wall is provided with a lifting guide block, which slides with the guide groove of the side wall of the gate frame;

[0010] The self-cleaning assembly includes a rotary flushing cylinder rotatably mounted on the bottom of the gate frame, and a linkage mechanism directly driven by the lifting movement of the solid gate body, the linkage mechanism driving the rotary flushing cylinder to rotate;

[0011] The piston booster unit is movably arranged in the cylindrical water collecting chamber and includes a main sealing plate, a secondary sealing plate and a linkage rod connected to the solid gate body. When the solid gate body descends, the linkage rod pushes the main sealing plate to squeeze the cylindrical water collecting chamber;

[0012] A one-way water supply unit connects the cylindrical water collection chamber and the rotating flushing cylinder to direct the squeezed water flow to the rotating flushing cylinder;

[0013] The one-way water inlet unit is symmetrically arranged on both sides of the water collecting chamber, connecting the external water source with the cylindrical water collecting chamber.

[0014] According to the above technical solution, the side wing water-stop sealing strip is fixedly embedded in the groove of the inner wall of the gate frame. The side wing water-stop sealing strip extends along the entire length of the vertical lifting channel, and a double-lip sealing structure is provided on its inner side to fit the side wall of the solid gate body;

[0015] The bottom water-stop sealing strip is bolted into the dovetail groove at the bottom of the gate frame, and its top surface is provided with a convex arc sealing strip that is pressed against the bottom of the solid gate body when the solid gate body is fully closed.

[0016] According to the above technical solution, the lifting mechanism includes:

[0017] Electric screw hoist fixed on the top of the gate frame;

[0018] A lifting screw that matches the thread of the electric screw hoist;

[0019] A movable hinge seat connected to the top of the solid gate body.

[0020] According to the above technical solution, the linkage mechanism includes:

[0021] A linkage hollow shaft is fixed to the end of the rotating flushing cylinder, and a driving gear is provided at the end of the linkage hollow shaft;

[0022] an intermediate gear that meshes with an adjacent drive gear;

[0023] Synchronous belt set, including:

[0024] An upper fixed shaft provided at the top of the guide chute and an upper pulley fixed thereon;

[0025] A lower fixed shaft is provided at the bottom of the guide chute and a lower pulley is fixed thereon, wherein the lower fixed shaft is coaxially connected to the linkage hollow shaft;

[0026] A transmission belt looped around the upper pulley and the lower pulley;

[0027] The lifting guide block is provided with a belt clamping portion, and the belt clamping portion is magnetically connected to the transmission belt.

[0028] According to the above technical solution, the belt clamping portion includes:

[0029] Type card seat, fixed on the upper end of the lifting guide block;

[0030] The permanent magnetic adsorption block is slidably arranged in the molded card seat and is magnetically coupled with the iron connecting piece on the side wall of the transmission belt;

[0031] A connecting rod, one end of which is fixedly connected to the permanent magnetic adsorption block and is sleeved with a return spring, and the other end of which is provided with a contact plate;

[0032] The eccentric wheel is coaxial with the transmission gear and is arranged on the shaft seat at the top of the lifting guide block, and is in sliding contact with the side wall of the contact plate;

[0033] The rack is vertically fixed to the side wall of the guide chute and meshes with the transmission gear.

[0034] According to the above technical solution, the piston boosting unit further includes:

[0035] A rubber sealing ring covering the main sealing plate;

[0036] A wear-resistant scraper ring located at the bottom of the secondary sealing plate;

[0037] a conical elastic plate provided at the bottom of the secondary sealing plate;

[0038] A tension spring is provided at the upper end of the main sealing plate.

[0039] According to the above technical solution, the one-way water supply unit includes:

[0040] A high-pressure water outlet hard pipe connected to the water collecting chamber;

[0041] A rotary joint connecting the high-pressure water outlet pipe and the rotary flushing cylinder;

[0042] A one-way valve embedded in the high-pressure water outlet pipe.

[0043] According to the above technical solution, the one-way water inlet unit includes:

[0044] The water inlet elbow runs through the side wall of the gate frame;

[0045] A rubber check valve is installed at the outlet end of the water inlet elbow;

[0046] Removable filter cover, including:

[0047] A screw cover with a threaded outer wall;

[0048] A cylindrical filter screen fixed in the screw cover;

[0049] A spiral scraper provided on the outer wall of the cylindrical filter;

[0050] A water inlet grid hole is provided at the outer end of the screw cover.

[0051] According to the above technical solution, the detachable filter cover also includes:

[0052] A recoil flow channel provided on the side wall of the screw cover;

[0053] The curved docking area is located on the side wall of the gate frame;

[0054] Connect the high-pressure water outlet hard pipe and the backwash quick-connect hose in the arc-shaped docking area.

[0055] When the solid gate body descends, high-pressure water flows through the backwash quick-connect hose into the backwash flow channel to reversely flush the cylindrical filter screen.

[0056] According to the above technical solution, the rotary flushing cylinder is a hollow cylindrical structure with conical spray holes evenly distributed on its peripheral wall. The top is slightly higher than the bottom plane of the gate frame, and the bottom of the solid gate body is provided with an avoidance arc groove that matches the rotary flushing cylinder.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] (1) Double-effect self-cleaning mechanism: Bottom high-pressure rotary jet flushing: The conical spray hole of the rotary flushing cylinder flushes the bottom of the gate and the surrounding sediment in a vortex jet manner. The water flows through the conical spray hole to form a spiral water beam, covering 98.7% of the bottom area of ​​the gate, with a wide cleaning coverage area; Filter reverse penetration flushing: High-pressure water flow penetrates the filter in the reverse direction, combined with the spiral scraper rotating scraping, the dual effect makes the filter flux attenuation rate less than 5% / month, the flux maintenance rate is 97%, and the frequency of manual cleaning is reduced;

[0059] (2) Energy self-supply closed-loop system: When the gate is lowered, the gravitational potential energy is converted into mechanical energy of the rotating flushing cylinder through the linkage mechanism, and the water flow is compressed by the piston booster unit to generate 0.6-0.8MPa high-pressure water energy. When the gate is raised, the piston resets to form a negative pressure, and the filtered water reserve is automatically sucked in. There is no external power throughout the process, and the cleaning system is driven only by the physical movement of the gate lifting (gravitational potential energy). No additional water pump or motor is required, which saves energy and reduces operating costs.

[0060] (3) Dynamic sealing technology: flank double-lip sealing strips: a combination of dynamic and static sealing, adapting to the friction during gate lifting and lowering, with a leakage rate of less than 0.1L / m² / h, preventing sewage leakage; bottom convex arc sealing strips: line contact sealing design, concentrated pressure, and a sealing effect superior to traditional flat sealing, ensuring no leakage when the gate is fully closed;

[0061] (4) Energy closed loop and environmental protection advantages: Energy closed loop system: During the descending phase, the gate's gravitational potential energy is converted into high-pressure water energy (0.6-0.8 MPa) and mechanical energy (rotating flushing cylinder 18±2 rpm) to drive the self-cleaning operation; During the ascending phase, the piston booster unit resets and stores energy, and the external water source automatically replenishes the water collection chamber without the need for additional energy supply; Energy saving and environmental protection: No external power (such as motors and water pumps) is required during the entire process, reducing carbon emissions and energy consumption;

[0062] (5) Adapt to complex working conditions and improve operational stability: Anti-blocking mechanism: The spiral scraper continuously scrapes away impurities on the filter surface, and the backwash high pressure penetrates deep blockages to ensure smooth water flow; the wear-resistant scraper ring of the piston booster unit and the conical elastic plate simultaneously remove attachments on the water collection chamber wall to prevent siltation;

[0063] (6) Magnetic intelligent transmission: non-contact clutch control: automatic coupling (adsorption force 120N) when the gap between the permanent magnetic adsorption block and the iron connecting piece is ≤0.1mm; adsorption is released when the gap is ≥5mm, and the rack and transmission gear are engaged to achieve speed matching; one-way working mode: the clutch is locked when descending, the eccentric wheel maintains the 180° convex position and continues to drive; the clutch is idling when ascending, and the transmission system is zero load;

[0064] (7) Applicable to high-pollution scenarios: For rivers containing sediment and floating objects, the self-cleaning function can effectively prevent the gate from getting stuck or the seal from failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0066] Figure 1 is a first perspective schematic diagram of the present invention;

[0067] Figure 2is a second perspective schematic diagram of the present invention;

[0068] Figure 3 is a third perspective schematic diagram of the present invention;

[0069] Figure 4 is a first partial perspective schematic diagram of the present invention;

[0070] Figure 5 is a second partial perspective schematic diagram of the present invention;

[0071] Figure 6 is a third partial perspective schematic diagram of the present invention;

[0072] Figure 7 is a fourth partial perspective schematic diagram of the present invention;

[0073] Figure 8 is a fifth partial perspective schematic diagram of the present invention;

[0074] Figure 9 is a sixth partial perspective schematic diagram of the present invention;

[0075] Figure 10 is a seventh partial perspective schematic diagram of the present invention;

[0076] Figure 11 is an eighth partial perspective schematic diagram of the present invention;

[0077] Figure 12 This invention Figure 7 A magnified schematic diagram of point A in the middle;

[0078] Figure 13 This invention Figure 9 A magnified schematic diagram of point B in the middle;

[0079] In the figure: 1-gate frame, 101-vertical lifting channel, 102-cylindrical water collection chamber, 103-guide chute, 2-solid gate body, 201-lifting guide block, 202-avoidance arc groove, 3-lifting mechanism, 301-electric screw hoist, 302-lifting screw, 303-movable hinge seat, 4-self-cleaning component, 401-rotating flushing cylinder, 401a-conical spray hole, 402-linkage mechanism, 402a-linkage Dynamic hollow shaft, 402b-driving gear, 402c-intermediate gear, 402d-synchronous belt group, 402d1-upper fixed shaft, 402d2-upper pulley, 402d3-lower fixed shaft, 402d4-lower pulley, 402d5-transmission belt, 402e-belt clamping part, 402e1-U-shaped card seat, 402e2-permanent magnetic adsorption block, 402e3-iron connecting piece, 402e4-connecting rod, 402 e5-reset spring, 402e6-shaft seat, 402e7-eccentric wheel, 402e8-transmission gear, 402e9-rack, 5-piston booster unit, 501-main sealing plate, 502-secondary sealing plate, 503-linkage rod, 504-rubber sealing ring, 505-wear-resistant scraper ring, 506-conical elastic plate, 507-tension spring, 6-one-way water supply unit, 601-high-pressure water outlet hard pipe, 602-swivel joint, 6 03- one-way valve, 7- one-way water inlet unit, 701- water inlet elbow, 702- rubber check valve, 703- detachable filter cover, 703a- screw cover, 703b- cylindrical filter, 703c- spiral scraper, 703d- water inlet grid hole, 703e- backwash flow channel, 703f- arc-shaped docking area, 703g- backwash quick-connect hose, 8- side water-stop sealing strip, 9- bottom water-stop sealing strip, 901- convex arc surface sealing strip. DETAILED DESCRIPTION

[0080] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0081] See also Figure 1-13 The present invention provides a technical solution: a river pollution-blocking steel gate, comprising:

[0082] The gate frame 1 is provided with a vertical lifting channel 101 and a symmetrically arranged cylindrical water collecting chamber 102;

[0083] The solid gate body 2 is movably mounted in the vertical lifting channel 101 through the lifting mechanism 3. The side wall of the gate body 2 is provided with a lifting guide block 201, which slides with the guide groove 103 on the side wall of the gate frame 1.

[0084] The self-cleaning assembly 4 includes a rotating flushing cylinder 401 rotatably mounted on the bottom of the gate frame 1, and a linkage mechanism 402 directly driven by the lifting movement of the solid gate body 2. The linkage mechanism 402 drives the rotating flushing cylinder 401 to rotate;

[0085] The piston booster unit 5 is movably disposed in the cylindrical water collecting chamber 102 and includes a main sealing plate 501, a secondary sealing plate 502, and a linkage rod 503 connected to the solid gate body 2. When the solid gate body 2 descends, the linkage rod 503 pushes the main sealing plate 501 to squeeze the cylindrical water collecting chamber 102.

[0086] The one-way water supply unit 6 connects the cylindrical water collecting chamber 102 and the rotating flushing cylinder 401 to direct the squeezed water flow to the rotating flushing cylinder 401;

[0087] One-way water inlet units 7 are symmetrically arranged on both sides of the water collecting chamber 102, connecting the external water source with the cylindrical water collecting chamber 102;

[0088] Specifically, it also includes:

[0089] The side wing water-stop sealing strip 8 is fixedly embedded in the T-shaped slot on the inner wall of the gate frame 1. The side wing water-stop sealing strip 8 extends along the entire length of the vertical lifting channel 101, and its inner side is provided with a double-lip sealing structure that fits with the side wall of the solid gate body 2;

[0090] The bottom water-stop sealing strip 9 is bolted into the dovetail groove at the bottom of the gate frame 1. The top surface of the bottom water-stop sealing strip 901 is provided, which is pressed against the bottom of the solid gate body 2 when the solid gate body 2 is fully closed.

[0091] Specifically, the lifting mechanism 3 includes:

[0092] An electric screw hoist 301 fixed on the top of the gate frame 1;

[0093] A lifting screw 302 threadedly engaged with the electric screw hoist 301;

[0094] A movable hinge seat 303 connected to the top of the solid gate body 2;

[0095] Specifically, the linkage mechanism 402 includes:

[0096] A linkage hollow shaft 402a is fixed to the end of the rotating flushing cylinder 401, and a driving gear 402b is provided at the end of the linkage hollow shaft 402a;

[0097] an intermediate gear 402c that meshes with an adjacent drive gear;

[0098] Synchronous belt set 402d, including:

[0099] An upper fixed shaft 402d1 provided at the top of the guide chute 103 and an upper pulley 402d2 fixed thereon;

[0100] A lower fixed shaft 402d3 and a lower pulley 402d4 are provided at the bottom of the guide chute 103. The lower fixed shaft 402d3 is coaxially connected to the linkage hollow shaft 402a.

[0101] a transmission belt 402d5 looped around the upper pulley 402d2 and the lower pulley 402d4;

[0102] The lifting guide block 201 is provided with a belt clamping portion 402e, which is magnetically connected to the transmission belt 402d5;

[0103] Specifically, the belt clamping portion 402e includes:

[0104] U-shaped holder 402e1, fixed to the upper end of the lifting guide block 201;

[0105] The permanent magnetic adsorption block 402e2 is slidably disposed in the U-shaped holder 402e1 and is magnetically coupled to the iron connecting piece 402e3 on the side wall of the transmission belt 402d5;

[0106] The connecting rod 402e4 has one end fixedly connected to the permanent magnetic adsorption block 402e2 and is sleeved with a return spring 402e5, and the other end is provided with a contact plate;

[0107] The eccentric wheel 402e7 is coaxially arranged with the transmission gear 402e8 on the shaft seat 402e6 at the top of the lifting guide block 201 and is in sliding contact with the side wall of the contact plate;

[0108] The rack 402e9 is vertically fixed to the side wall of the guide chute 103 and meshes with the transmission gear 402e8;

[0109] Specifically, the piston boosting unit 5 further includes:

[0110] A rubber sealing ring 504 covering the main sealing plate 501;

[0111] A wear-resistant scraper ring 505 provided at the bottom of the secondary sealing plate 502;

[0112] a conical elastic plate 506 provided at the bottom of the secondary sealing plate 502;

[0113] A tension spring 507 provided at the upper end of the main sealing plate 501;

[0114] Specifically, the one-way water supply unit 6 includes:

[0115] A high-pressure water outlet hard pipe 601 connected to the water collecting chamber 102;

[0116] A rotary joint 602 connecting the high-pressure water outlet hard pipe 601 and the rotary flushing cylinder 401;

[0117] A one-way valve 603 embedded in the high-pressure water outlet hard pipe 601;

[0118] Specifically, the one-way water inlet unit 7 includes:

[0119] An inlet elbow 701 passing through the side wall of the gate frame 1;

[0120] A rubber check valve 702 is provided at the outlet end of the water inlet elbow 701;

[0121] Removable filter cover 703, including:

[0122] A screw cover 703a with a threaded outer wall;

[0123] A cylindrical filter 703b fixed in the screw cover 703a;

[0124] A spiral scraper 703c provided on the outer wall of the cylindrical filter 703b;

[0125] A water inlet grid hole 703d is provided at the outer end of the screw cover 703a;

[0126] Specifically, the detachable filter cover 703 further includes:

[0127] A backwash flow channel 703e provided on the side wall of the screw cover 703a;

[0128] An arc-shaped docking area 703f provided on the side wall of the gate frame 1;

[0129] Connect the high-pressure water outlet hard pipe 601 with the backwash quick-connect hose 703g of the arc-shaped docking area 703f.

[0130] When the solid gate body 2 descends, high-pressure water flows through the backwash quick-connect hose 703g into the backwash flow channel 703e, and reversely flushes the cylindrical filter 703b;

[0131] Specifically, the rotating flushing cylinder 401 is a hollow cylindrical structure with conical spray holes 401a evenly distributed on its peripheral wall. The top is slightly higher than the bottom plane of the gate frame 1, and the bottom of the solid gate body 2 is provided with an avoidance arc groove 202 that matches the rotating flushing cylinder 401.

[0132] Working Principle: This device is a self-cleaning steel gate designed to intercept river debris. Designed for use in conjunction with a river debris barrier, it primarily operates via an electric screw hoist to raise and lower the gate, achieving open and close control. Simultaneously, as the gate descends, a linkage mechanism drives a rotating flushing drum for self-cleaning, preventing clogging and improving operational stability. A piston booster unit and a one-way water supply unit are incorporated into the gate frame. The water pressure generated by the gate's descent drives the cleaning system, achieving efficient and energy-saving self-cleaning capabilities.

[0133] The following is a detailed explanation of the functions of each component:

[0134] Gate frame 1

[0135] Vertical lifting channel 101: a channel for the solid gate body 2 to slide up and down, ensuring smooth operation of the gate.

[0136] Symmetrically arranged cylindrical water collection chambers 102: located on both sides of the gate, used to store and pressurize water flow to provide power for subsequent flushing.

[0137] Solid gate body 2

[0138] Lifting guide block 201: cooperates with the guide slot 103 on the side wall of the gate frame to ensure the linearity and stability of the gate during lifting and lowering.

[0139] Avoidance arc groove 202: located at the bottom of the gate, used to avoid the rotating flushing cylinder 401, prevent collision, and ensure that the gate is completely closed.

[0140] Lifting mechanism 3

[0141] Electric screw gate hoist 301: fixed on the top of the gate, providing lifting power.

[0142] Lifting screw 302: Threadedly connected to the electric screw hoist 301, driving the gate to move up and down.

[0143] Active hinge seat 303: connects the top of the gate with the lifting screw 302 to achieve flexible connection and avoid stress concentration.

[0144] Self-cleaning component 4

[0145] Rotating flushing cylinder 401: Hollow cylindrical structure, with conical spray holes 401a on the peripheral wall. The gradually expanding spray holes reduce water flow resistance and increase the range by 30%, which can effectively flush the bottom of the gate and the surrounding area; it is installed at the bottom of the gate frame, with the top slightly higher than the bottom plane of the gate to ensure that flushing can still be carried out when the gate is closed.

[0146] Linkage mechanism 402

[0147] Linked hollow shaft 402a: fixed at both ends of the rotating flushing cylinder 401, used for support and transmission.

[0148] Driving gear 402b: installed at the end of the linkage hollow shaft 402a, used for transmitting power.

[0149] Intermediate gear 402c: connects the two driving gears 402b to achieve synchronous rotation.

[0150] Synchronous belt set 402d:

[0151] The upper pulley 402d2 and the lower pulley 402d4 are connected by a transmission belt 402d5.

[0152] The lower pulley 402d4 is coaxially connected to the linkage hollow shaft 402a.

[0153] Belt clamping portion 402e:

[0154] U-shaped holder 402e1: rigidly fixed to the upper end of the lifting guide block 201, with its opening facing the transmission belt 402d5;

[0155] Permanent magnetic adsorption block 402e2: Slidingly arranged in the inner cavity of the U-shaped card holder 402e1, made of neodymium iron boron magnet, with the magnetic pole direction perpendicular to the belt surface;

[0156] Iron connecting piece 402e3: vulcanized and coated on the outside of the transmission belt 402d5, aligned with the magnetic surface of the permanent magnetic adsorption block 402e2;

[0157] Connecting rod 402e4: One end is screwed to permanent magnetic adsorption block 402e2, and the other end extends to the shaft seat 402e6 area and fixes the contact block. The bottom surface of the contact block is in sliding contact with the top surface of the lifting guide block 201;

[0158] Return spring 402e5: sleeved on the outer circumference of connecting rod 402e4, with its two ends respectively abutting against U-shaped holder 402e1 and permanent magnetic adsorption block 402e2;

[0159] Shaft seat 402e6: welded and fixed to the top of the lifting guide block 201, containing self-lubricating bearings;

[0160] Eccentric wheel 402e7: The coaxial key is connected to the output end of the shaft seat 402e6, and the wheel rim is in rolling contact with the end of the connecting rod 402e4. At the same time, a limit column is set on the top of the lifting guide block 201 to limit the maximum displacement end of the protruding end of the eccentric wheel 402e7 to within 180 degrees;

[0161] Transmission gear 402e8: Coaxially fixed with eccentric wheel 402e7, transmission gear 402e8 and eccentric wheel 402e7 can rotate relative to each other via a one-way clutch or ratchet mechanism (when the gate is lowered, the gear rotates counterclockwise, the clutch is locked, and the eccentric wheel is driven; when the gate is raised, the gear rotates clockwise, the clutch is idle, and the eccentric wheel is free). These are common technical means in the prior art and will not be described in detail here.

[0162] Rack 402e9: fixed vertically to the side wall of the guide chute 103 by countersunk bolts, meshing with the transmission gear 402e8, with the tooth direction parallel to the gate lifting direction;

[0163] When the lifting guide block 201 moves:

[0164] During the gate lowering phase, the transmission gear 402e8 rolls counterclockwise along the rack 402e9, driving the eccentric wheel 402e7 to rotate. The convex portion of the eccentric wheel pushes the connecting rod 402e4, and the permanent magnetic adsorption block 402e2 extends out of the U-shaped holder 402e1. The gap between the magnetic surface and the iron connecting piece 402e3 is ≤0.1mm. The gate keeps descending, the transmission gear 402e8 continues to rotate, the clutch slips, and the eccentric wheel is locked within 180° (maintaining the maximum displacement).

[0165] Gate rising stage: the transmission gear 402e8 rolls clockwise, the concave part of the eccentric wheel 402e7 turns to the connecting rod 402e4, the tensile force of the return spring 402e5 is released, the permanent magnetic adsorption block 402e2 retracts, and the distance between the magnetic surface and the iron connecting piece 402e3 is ≥5mm, and the adsorption is released.

[0166] Piston booster unit 5

[0167] Main sealing plate 501: cooperates with the water collecting chamber 102 and acts as a piston, compressing the water pressure inside the chamber as the gate descends.

[0168] Secondary sealing plate 502: Assists in sealing to prevent water leakage.

[0169] Linkage rod 503: connects the main sealing plate 501 and the gate body, so that the main sealing plate 501 is pushed down when the gate descends.

[0170] Rubber sealing ring 504: covers the main sealing plate 501 to enhance sealing performance.

[0171] Wear-resistant scraper ring 505: prevents foreign matter from entering the sealing structure and scrapes away attachments on the cavity wall.

[0172] Conical elastic plate 506: buffers the downward pressure impact of the main sealing plate 501 and the auxiliary sealing plate 502.

[0173] Tension spring 507: assists in resetting the main sealing plate 501 to prevent it from getting stuck.

[0174] Function: When the gate descends, the piston booster unit compresses the water in the water collecting chamber 102 to form a high-pressure water flow, which provides power for the flushing system. A single stroke can generate 0.6-0.8MPa water pressure to meet the flushing requirements.

[0175] One-way water supply unit 6

[0176] High-pressure water outlet hard pipe 601: transports the high-pressure water flow from the water collection chamber 102 to the rotating flushing cylinder 401, and adopts thick-walled stainless steel pipe with a pressure resistance of ≥1.2MPa.

[0177] Rotating joint 602: adopts mechanical seal and graphite ring to ensure stable water supply when the rotating flushing cylinder 401 rotates.

[0178] One-way valve 603: prevents water from flowing back and ensures flushing pressure.

[0179] One-way water inlet unit 7

[0180] Water inlet elbow 701: External water enters the water collecting chamber through this pipe.

[0181] Rubber check valve 702: prevents water from flowing back.

[0182] Removable filter cover 703:

[0183] Screw cover 703a: detachable structure for easy cleaning.

[0184] Cylindrical filter 703b: Filters debris in the water to prevent clogging.

[0185] Spiral scraper 703c: scrapes away impurities on the surface of the cylindrical filter 703b during rotation.

[0186] Water inlet grid hole 703d: water inlet.

[0187] Backwash flow channel 703e: water flow channel during backwashing.

[0188] Arc-shaped docking area 703f: docking with the backwash hose.

[0189] Backwash quick-connect hose 703g: directs high-pressure flushing water flow into the screw cover 703a for backwashing.

[0190] Backwash principle: When the gate drops, high-pressure water flows through the backwash hose into the backwash channel, reversely flushing the filter to improve cleaning efficiency.

[0191] Water-stop sealing structure

[0192] Side water-stop sealing strip 8

[0193] Installed in the T-slot and arranged along the entire length of the vertical lifting channel, the double-lip sealing structure fits tightly against the side wall of the gate to prevent leakage.

[0194] Bottom water stop sealing strip 9

[0195] It is fixed in the dovetail groove and has a convex arc sealing strip 901 on the top. It has line contact sealing and concentrated pressure. The sealing effect is better than plane sealing. When the gate is closed, it is pressed against the bottom of the gate to form a good seal.

[0196] Working method of river pollution-blocking steel gate

[0197] 1. Descent phase (power generation and self-cleaning)

[0198] Pollution interception start

[0199] The electric screw gate opening and closing machine 301 drives the lifting screw 302 to move downward, driving the solid gate body 2 to descend vertically along the vertical lifting channel 101 of the gate frame 1. During this process, the lifting guide block 201 on the side wall of the solid gate body 2 is embedded in the guide slide groove 103 on the side wall of the gate frame 1 to slide, ensuring the accuracy of the motion trajectory. When the gate descends, the inner sealing lip of the double-lip sealing structure 801 of the side wing water-stop sealing strip 8 is tightly attached to the side wall of the solid gate body 2 for dynamic sealing, and the outer sealing lip statically seals the inner wall of the frame 1.

[0200] Mechanical energy conversion

[0201] Rotational power transmission: When the lifting guide block 201 descends, the magnetic clamper 402e on its side wall attracts the iron connecting piece 402e3 on the surface of the transmission belt 402d5 through the permanent magnetic adsorption block 402e2 in the U-shaped holder 402e1, driving the synchronous belt group 402d to move. The transmission belt drives the lower pulley 402d4 on the lower fixed shaft 402d3 to rotate, and the linked hollow shaft 402a transmits the torque to the rotating flushing cylinder 401, causing it to rotate at a speed of 18±2 rpm.

[0202] Water pressure can be generated: the solid gate body 2 descends and at the same time pushes the main sealing plate 501 of the piston booster unit 5 downward through the linkage rod 503. The nitrile rubber sealing ring 504 of the main sealing plate 501 squeezes the water in the cylindrical water collecting chamber 102. The wear-resistant scraper ring 505 at the bottom of the secondary sealing plate 502 compensates for the sealing gap, increases the water pressure to 0.6-0.8MPa, and synchronously scrapes off the attachments on the cavity wall with the conical elastic plate 506 at the bottom.

[0203] Self-cleaning execution

[0204] Bottom flushing: High-pressure water flows through the high-pressure water outlet hard pipe 601 of the one-way water supply unit 6, enters the inner cavity of the rotating flushing cylinder 401 through the rotary joint 602, and the water flow is guided by the axial spiral guide plate 401b to form a vortex, and is ejected from the gradually expanding spray hole 401a in a conical water jet to flush the silt at the bottom of the gate frame 1.

[0205] Filter backwash: At the same time, part of the high-pressure water flow is diverted to the backwash quick-connect hose 703g, and is injected into the backwash flow channel 703e of the detachable filter cover 703 through the control of the one-way valve 603. The high-pressure water penetrates the cylindrical filter 703b in the reverse direction, flushing the blockage out from the water inlet grid hole 703d; the tangential force of the water flow drives the spiral scraper 703c to rotate, continuously scraping the residual impurities on the inner wall of the filter.

[0206] 2. Rising stage (energy storage and reset)

[0207] Water storage

[0208] The electric screw hoist 301 reverses and lifts the lifting screw 302, and the solid gate body 2 rises along the guide slide 103. At this time, the main sealing plate 501 of the piston booster unit 5 is pulled back to its original position by the tension spring 507, forming a negative pressure in the water collecting chamber 102. The external water flow pushes open the rubber check valve 702 of the one-way water inlet unit 7, enters the detachable filter cover 703 through the water inlet elbow 701, and the water is filtered through the cylindrical filter 703b and then injected into the water collecting chamber 102 to complete the water storage.

[0209] Institutional decoupling

[0210] When the lifting guide block 201 moves upward, the permanent magnetic adsorption block 402e2 of the magnetic clamper 402e and the iron connecting piece 402e3 of the transmission belt 402d5 are automatically separated, the synchronous belt group 402d stops moving, and the rotating flushing cylinder 401 naturally stops due to the internal hydraulic resistance and the friction damping of the rotating joint 602, avoiding idling loss.

[0211] Seal reduction

[0212] After the gate body is fully lifted, the convex arc sealing strip 901 of the bottom water-stop sealing strip 9 is out of contact with the bottom of the gate, and its internal elastic material rebounds to its original shape; the double-lip structure 801 of the side water-stop sealing strip 8 remains in a pre-compressed state without lateral pressure to maintain basic sealing.

[0213] 3. Working cycle characteristics

[0214] Energy closed loop: During the descending phase, the gate's gravitational potential energy is converted into the mechanical energy of the rotating flushing cylinder and the water pressure energy of the piston booster unit; during the ascending phase, the electric gate hoist is used to store energy and simultaneously complete water filtration and replenishment.

[0215] Anti-clogging mechanism: The spiral scraper 703c continuously scrapes the filter screen during the water inlet stage, and the high-pressure water penetrates the filter screen's micropores to remove deep blockages during the backwash stage. This dual mechanism ensures that the filter flux attenuation rate is less than 5% per month.

[0216] Zero external power: The entire process does not require external energy supply equipment such as water pumps and motors, and only relies on the physical movement of the gate lifting to achieve a self-cleaning closed loop.

[0217] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0218] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A river pollution-blocking steel gate, characterized by: include: A gate frame (1) is provided with a vertical lifting channel (101) and symmetrically arranged cylindrical water collecting chambers (102); The solid gate body (2) is movably installed in the vertical lifting channel (101) through the lifting mechanism (3), and the side wall thereof is provided with a lifting guide block (201), and the lifting guide block (201) is slidably matched with the guide slot (103) on the side wall of the gate frame (1); The self-cleaning assembly (4) comprises a rotating flushing cylinder (401) rotatably mounted on the bottom of the gate frame (1), and a linkage mechanism (402) directly driven by the lifting movement of the solid gate body (2), wherein the linkage mechanism (402) drives the rotating flushing cylinder (401) to rotate; A piston booster unit (5) is movably disposed in the cylindrical water collecting chamber (102), comprising a main sealing plate (501), a secondary sealing plate (502), and a linkage rod (503) connected to the solid gate body (2), wherein when the solid gate body (2) descends, the linkage rod (503) pushes the main sealing plate (501) to squeeze the cylindrical water collecting chamber (102); A one-way water supply unit (6) connects the cylindrical water collecting chamber (102) and the rotating flushing cylinder (401) to direct the squeezed water flow to the rotating flushing cylinder (401); The one-way water inlet unit (7) is symmetrically arranged on both sides of the water collecting chamber (102) and connects the external water source with the cylindrical water collecting chamber (102).

2. The river channel pollution-blocking steel gate according to claim 1 is characterized in that: Also includes: The wing water-stop sealing strip (8) is fixedly embedded in the T-shaped slot on the inner wall of the gate frame (1). The wing water-stop sealing strip (8) extends along the entire length of the vertical lifting channel (101), and a double-lip sealing structure is provided on the inner side thereof to fit the side wall of the solid gate body (2); The bottom water-stop sealing strip (9) is bolted into the dovetail groove at the bottom of the gate frame (1), and its top surface is provided with a convex arc sealing strip (901) which is pressed against the bottom of the solid gate body (2) when the solid gate body (2) is fully closed.

3. The river channel pollution-blocking steel gate according to claim 1 is characterized in that: The lifting mechanism (3) comprises: An electric screw hoist (301) fixed to the top of the gate frame (1); A lifting screw (302) threadedly engaged with the electric screw hoist (301); A movable hinge seat (303) is connected to the top of the solid gate body (2).

4. The river channel pollution-blocking steel gate according to claim 1 is characterized in that: The linkage mechanism (402) includes: A linkage hollow shaft (402a) is fixed to the end of the rotating flushing cylinder (401), and a driving gear (402b) is provided at the end of the linkage hollow shaft (402a); an intermediate gear (402c) meshing with an adjacent drive gear (402b); Timing belt set (402d), including: An upper fixed shaft (402d1) provided at the top of the guide chute (103) and an upper pulley (402d2) fixed thereon; A lower fixed shaft (402d3) and a lower pulley (402d4) fixed thereon are provided at the bottom of the guide chute (103), wherein the lower fixed shaft (402d3) is coaxially connected to the linkage hollow shaft (402a); a transmission belt (402d5) looped around an upper pulley (402d2) and a lower pulley (402d4); The lifting guide block (201) is provided with a belt clamping portion (402e), and the belt clamping portion (402e) is magnetically connected to the transmission belt (402d5).

5. The river channel pollution-blocking steel gate according to claim 4 is characterized in that: The belt clamping portion (402e) comprises: A U-shaped holder (402e1) is fixed to the upper end of the lifting guide block (201); A permanent magnetic adsorption block (402e2) is slidably disposed in the U-shaped holder (402e1) and is magnetically coupled to an iron connecting piece (402e3) on the side wall of the transmission belt (402d5); A connecting rod (402e4) has one end fixedly connected to the permanent magnetic adsorption block (402e2) and is sleeved with a return spring (402e5), and the other end is provided with a contact plate; The eccentric wheel (402e7) is coaxially arranged with the transmission gear (402e8) on the shaft seat (402e6) at the top of the lifting guide block (201) and is in sliding contact with the side wall of the contact plate; The rack (402e9) is vertically fixed to the side wall of the guide chute (103) and meshes with the transmission gear (402e8).

6. The river channel pollution-blocking steel gate according to claim 1 is characterized in that: The piston boosting unit (5) further comprises: A rubber sealing ring (504) covering the main sealing plate (501); A wear-resistant scraper ring (505) provided at the bottom of the secondary sealing plate (502); a conical elastic plate (506) provided at the bottom of the secondary sealing plate (502); A tension spring (507) is provided at the upper end of the main sealing plate (501).

7. The river channel pollution-blocking steel gate according to claim 1 is characterized by: The one-way water supply unit (6) comprises: A high-pressure water outlet hard pipe (601) communicating with the water collecting chamber (102); A rotary joint (602) connecting the high-pressure water outlet hard pipe (601) and the rotary flushing cylinder (401); A one-way valve (603) is embedded in the high-pressure water outlet hard pipe (601).

8. The river channel pollution-blocking steel gate according to claim 1 is characterized by: The one-way water inlet unit (7) comprises: An inlet elbow (701) passing through the side wall of the gate frame (1); A rubber check valve (702) provided at the outlet end of the water inlet elbow (701); Removable filter cover (703), comprising: A screw cover (703a) with a threaded outer wall; a cylindrical filter screen (703b) fixed in the screw cover (703a); a spiral scraper (703c) provided on the outer wall of the cylindrical filter screen (703b); A water inlet grid hole (703d) is provided at the outer end of the screw cover (703a).

9. The river channel pollution-blocking steel gate according to claim 8, characterized in that: The detachable filter cover (703) further includes: a recoil flow channel (703e) provided on the side wall of the screw cover (703a); An arc-shaped docking area (703f) provided on the side wall of the gate frame (1); Connect the high-pressure water outlet hard pipe (601) and the backwash quick-connect hose (703g) of the arc-shaped docking area (703f). When the solid gate body (2) descends, high-pressure water flows through the backwash quick-connect hose (703g) into the backwash flow channel (703e), and reversely flushes the cylindrical filter screen (703b).

10. The river channel pollution-blocking steel gate according to claim 1, characterized in that: The rotating flushing cylinder (401) is a hollow cylindrical structure, with conical spray holes (401a) evenly distributed on its peripheral wall, and its top is slightly higher than the bottom plane of the gate frame (1). The bottom of the solid gate body (2) is provided with an avoidance arc groove (202) matching the rotating flushing cylinder (401).

Images