Bidirectional water stop cast iron gate with protection function

Abstract

The invention relates to the technical field of water conservancy projects, and discloses a two-way water stop cast iron gate with a protection function, comprising: a door-shaped gate frame, which is internally provided with a vertical lifting area; the nodular cast iron gate is movably mounted in the vertical lifting area; the bidirectional self-adaptive sealing system comprises an adjusting cavity which is arranged in the nodular cast iron gate and is through up and down; the connecting rod is fixed to the top of the door-shaped gate frame and extends into the adjusting cavity. The piston assembly can move in the adjusting cavity; when the gate descends, water flow penetrates through the filtering structure to enter the adjusting cavity, the self-weight of the gate is increased, the sealing effect is assisted, the gate can still be kept in a closed state especially under the low-water-pressure or water-free working condition, when the gate ascends, water in the adjusting cavity reversely scours the composite filtering plate, impurities are taken away, and self-cleaning of the filtering system and the bottom sealing strip is achieved; the manual maintenance frequency is reduced, and the device has the advantages of being high in practicability and self-cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, in particular to a bidirectional water-stop cast iron gate with a protective function. Background Art

[0002] Traditional gates, core equipment in water conservancy projects and municipal facilities, are primarily used to regulate water flow, control water levels, or shut off water flow. Their typical structure includes a metal or cast iron gate disc, a sealing surface, and an opening and closing mechanism (such as a screw, hydraulic, or electric drive). For example, gate valves achieve a seal through the fit between the valve disc and the valve seat, butterfly valves control flow through a rotating disc, and ductile iron gates adjust the flow area through sliding or lifting movements. Traditional gates are widely used in water conservancy projects, sewage treatment, power systems, and other fields. Their core function is to ensure the controllability and sealing of water flow.

[0003] While traditional gates play an important role in engineering projects, their design has significant flaws, primarily in the following areas: Inadequate sealing performance: Traditional gates rely on rigid sealing surfaces (such as metal-to-metal or rubber seals) to stop water flow. However, over long periods of operation, foreign particles can easily embed themselves in the sealing surfaces, causing wear or jamming, reducing seal reliability. Particularly in scenarios with bidirectional water pressure fluctuations (such as frequent changes in upstream and downstream water levels), the one-way sealing design struggles to adapt to dynamic pressure changes and is prone to leakage. Stability and energy consumption conflict: Fixed counterweights prevent the gate from dynamically adjusting its deadweight based on water head during closing. This leads to the following issues: insufficient closure at low water levels, where the gate is easily dislodged by the water flow due to its low deadweight (the instability rate is >30% when the critical head difference is ≤0.8m); and overload at high water levels, where excessive counterweights increase opening and closing energy consumption (motor power consumption increases by 0.5kW for every additional ton of counterweight).

[0004] Traditional gate technology is limited by static counterweights, passive sealing and manual maintenance modes, and there are three major contradictions: the contradiction between stability and energy consumption: the reliance on fixed counterweights makes it difficult to balance "easy instability at low water levels" and "high energy consumption at high water levels"; the contradiction between sealing reliability and maintenance costs: frequent replacement of seals makes the average annual maintenance cost reach 15%-20% of the equipment cost; the contradiction between dredging needs and operational continuity: frequent shutdowns for dredging during the critical flood prevention period directly affect the project benefits. These defects are particularly prominent in tidal power stations (opening and closing more than 30 times a day), high-sediment-content rivers (such as Yellow River tributaries) and seawater environments, and there is an urgent need to achieve breakthroughs through hydraulic dynamic regulation and self-cleaning technologies. Summary of the Invention

[0005] The purpose of the present invention is to provide a bidirectional water-stop cast iron gate with a protective function to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a bidirectional water-stop cast iron gate with protective function, comprising: A gate-shaped gate frame with a vertical lifting area inside; A ductile iron gate, movably installed in the vertical lifting area; Bidirectional adaptive sealing system: An adjusting chamber provided inside the ductile iron gate and extending vertically; A connecting rod fixed to the top of the gate frame and extending into the regulating cavity; a piston assembly displaceable within the regulating chamber; Hydraulic deadweight regulating channel: provided at the bottom of the piston assembly, including a flow port and a detachably mounted fluid filtering structure; Lifting linkage cleaning mechanism: A movable component fixed to the bottom of the connecting rod; a vibration drive assembly disposed between the movable member and the piston assembly; A cleaning execution component driven by the vibration drive assembly; in: When the ductile iron gate descends, water flows through the fluid filtering structure and enters the regulating chamber, increasing the gate's deadweight; When the ductile iron gate rises, the water in the regulating chamber flushes out in the reverse direction to achieve self-cleaning; The lifting movement of the ductile iron gate drives the cleaning execution component to perform a reciprocating puncture cleaning action on the fluid filtering structure.

[0007] According to the above technical solution, the ductile iron gate is driven by a threaded lifting mechanism, which includes: a servo motor fixed to the top of the gate frame; a ball screw connected to an output end of the servo motor; A lead screw nut is embedded in the interior of the ductile iron gate.

[0008] According to the above technical solution, the regulating cavity is an inverted cone structure; The piston assembly comprises: central piston plate; The edge piston plates are symmetrically connected to the two sides of the central piston plate through an elastic pre-tightening mechanism, and the edge piston plates are in sealing cooperation with the inverted conical cavity wall; Corner sealing pads fixed at the four corners of the regulating cavity; Edge sealing gaskets 1 provided on both sides of the central piston plate; A second edge sealing gasket is provided on the outer side of the edge piston plate.

[0009] According to the above technical solution, the fluid filtration structure is a composite filter plate, which includes: A hollow square detachable filter cartridge with an external plate fixed to the bottom; an embedding groove provided at the lower end of the circulation port; Fastening bolts for fixing the external connecting plate to the embedded slot; A polyurethane anti-leakage pad provided on the upper end of the external plate; a coarse filter fixed to the lower inner portion of the detachable filter cartridge; A fine filter screen is fixed to the upper inner portion of the detachable filter cartridge.

[0010] According to the above technical solution, the elastic preload mechanism includes: A pushing groove is provided on the side wall of the central piston plate; A stainless steel pushing plate movably arranged in the pushing groove; a disc spring fixed to the inner wall of the pushing groove; A T-shaped limit block fixedly connected to the upper end of the pushing plate; A limiting groove that slidably cooperates with the T-shaped limiting block.

[0011] According to the above technical solution, the movable component is a cleaning movable seat, and a dovetail-shaped guide block is fixed to its side wall; A hardened steel guide groove is provided inside the central piston plate of the piston assembly, and the dovetail guide block is slidably engaged with the hardened steel guide groove; A buffer limit column is provided at the bottom of the hardened steel guide groove, and a neoprene pad is fixed to the top of the buffer limit column; A tension spring is fixedly connected to the top of the movable component, and the tension spring is sleeved outside the connecting rod; The vibration drive assembly drives the vibration seat in the cleaning movable seat to perform vertical reciprocating motion.

[0012] According to the above technical solution, the vibration drive assembly includes: a vertical rack fixed to the side wall of the central piston plate; Rotating a main drive gear mounted on a side wing of the cleaning movable seat, wherein the main drive gear is engaged with the vertical rack; An eccentric crank plate coaxially fixed to the main drive gear, wherein a T-shaped slot is radially provided on the surface of the eccentric crank plate; an eccentric shaft pin slidably arranged in the T-shaped slide groove; a connecting rod fixedly arranged on the side wall of the vibration seat; The two ends are respectively and movably connected to the eccentric shaft pin and the hinged movable seat of the connecting rod.

[0013] According to the above technical solution, the eccentric shaft pin includes: a tungsten steel slider that slides in cooperation with the T-shaped slideway; A rotary handle bolt is threadedly connected to the top of the tungsten steel slider, and the rotary handle bolt has a scale indicator.

[0014] According to the above technical solution, a gate guide assembly is also included, and the gate guide assembly includes: An inner slider and an outer slider symmetrically arranged on both side walls of the ductile iron gate; Sliding lifting grooves are provided on both side walls of the gate frame, and the inner sliding block is in clearance fit with the sliding lifting grooves; a wear-resistant polyurethane layer coated on the surface of the inner slider; A copper-based self-lubricating layer containing impregnated graphite is provided on the surface of the outer slider.

[0015] According to the above technical solution, the cleaning execution component is a cleaning ejector group, which includes: A needle body vertically fixed to the bottom of the vibration base; A hard alloy triangular pyramid puncture head provided at the end of the needle body; A silicone rubber elastic compensation ring integrally formed on the upper part of the needle body; Wherein, the hard alloy triangular pyramid puncture head penetrates the fluid filtering structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) Dynamic pressure regulation: The inverted cone-shaped regulating chamber cooperates with the piston assembly to dynamically adjust the sealing pressure through the elastic preload mechanism 3, which can adapt to both positive and negative water pressures (such as changes in the upstream and downstream water level difference), solving the failure problem of traditional one-way sealing gates in bidirectional water flow, improving protection capabilities, and forming a multi-layer sealing structure (corner sealing gaskets, edge sealing gasket 1, edge sealing gasket 2) to form redundant protection, significantly reducing the risk of leakage, and is suitable for high-pressure scenarios; (2) Hydraulic deadweight adjustment and self-cleaning function: When the gate is lowered, water flows through the filter structure and enters the regulating chamber, increasing the deadweight of the gate and assisting the sealing effect, especially in low water pressure or waterless working conditions, it can still maintain a closed state. When the gate rises, the water in the regulating chamber reversely flushes the composite filter plate, taking away impurities, realizing the self-cleaning of the filtration system and the bottom sealing strip, reducing the frequency of manual maintenance. The gate lifting and lowering drive cleaning mechanism punctures the filter screen with a high frequency through the carbide triangular pyramid puncture head, completely removing blockages. The silicone rubber elastic compensation ring buffers the impact and protects the filter screen from damage. (3) High-precision automated control: Using precision transmission of ball screw and screw nut, combined with servo motor programming control, it can achieve precise adjustment of gate opening and closing speed and position. It is compatible with smart water management systems and can integrate IoT modules to upload gate status (such as opening, water pressure, and cleaning cycle) in real time. It supports remote control and improves management efficiency. (4) Low maintenance and long life design: The gate guide assembly (the wear-resistant polyurethane layer of the inner slider and the graphite copper-based self-lubricating layer of the outer slider) greatly reduces friction loss, reduces wear and maintenance requirements, and the composite filter plate is easy to replace or clean regularly, extending the service life of the entire system. The cleaning mechanism is completely driven by the gate movement, without the need for additional motors or hydraulic equipment, reducing energy consumption and failure rate; (5) Environmental adaptability: It is applicable to water conservancy projects (reservoirs, channels), municipal facilities (drainage systems, landscape water bodies), industrial fields (wastewater treatment plants, chemical plants), etc., meeting the needs of different working conditions. The self-cleaning function reduces manual intervention, the modular design shortens maintenance time, and the long-term operating cost is significantly lower than that of traditional gates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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: Figure 1 is a first perspective schematic diagram of the present invention; Figure 2 is a second perspective schematic diagram of the present invention; Figure 3 is a first partial perspective schematic diagram of the present invention; Figure 4 is a second partial perspective schematic diagram of the present invention; Figure 5 is a third partial perspective schematic diagram of the present invention; Figure 6 is a fourth partial perspective schematic diagram of the present invention; Figure 7 is a fifth partial perspective schematic diagram of the present invention; Figure 8 is a sixth partial perspective schematic diagram of the present invention; Figure 9 is a seventh partial perspective schematic diagram of the present invention; Figure 10 is an eighth partial perspective schematic diagram of the present invention; Figure 11 is a ninth partial perspective schematic diagram of the present invention; Figure 12 is a tenth partial perspective schematic diagram of the present invention; Figure 13 This invention Figure 9 A partial enlarged schematic diagram of point A in the middle; Figure 14 This invention Figure 12 A partial enlarged schematic diagram of point B in the middle; In the figure: 1-gate frame, 11-vertical lifting area, 2-ductile iron gate, 3-bidirectional adaptive sealing system, 31-adjusting chamber, 32-connecting rod, 33-piston assembly, 331-central piston plate, 332-elastic preload mechanism, 3321-push groove, 3322-stainless steel push plate, 3323-disc spring, 3324-T-type limit block, 3325-limit groove, 333-edge piston plate, 334-corner sealing gasket, 335-edge sealing gasket 1, 336-edge sealing gasket 2, 4-hydraulic deadweight adjustment channel, 41-flow port, 42-fluid filtration structure, 421-detachable filter cartridge, 422-external plate, 423-embedded groove, 424-fastening bolt, 425-polyurethane anti-leakage pad, 426-coarse filter screen, 427-fine filter screen, 5-lifting linkage Cleaning mechanism, 51-moving parts, 511-cleaning movable seat, 512-dovetail guide block, 513-hardened steel guide groove, 514-buffer limit column, 515-chloroprene rubber pad, 516-tension spring, 52-vibration drive assembly, 521-vibration seat, 522-vertical rack, 523-main drive gear, 524-eccentric crank disk, 525-T-type slide, 526-eccentric shaft pin, 5261-tungsten steel slider, 5262-rotary handle bolt, 527-connecting rod, 528-articulated movable seat, 53-cleaning actuator, 531-needle body, 532-carbide triangular pyramid puncture head, 533-silicone rubber elastic compensation ring, 6-thread lifting mechanism, 61-servo motor, 62-ball screw, 7-gate guide assembly, 71-inner slider, 72-outer slider, 73-sliding lifting groove. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-14 The present invention provides a technical solution: a two-way water-stop cast iron gate with protective function, comprising: A gate-shaped gate frame 1, wherein a vertical lifting area 11 is provided inside; The ductile iron gate 2 is movably installed in the vertical lifting area 11; Bidirectional adaptive sealing system3: An adjusting chamber 31 is provided inside the ductile iron gate 2 and is connected vertically; A connecting rod 32 fixed to the top of the gate frame 1 and extending into the regulating cavity 31; a piston assembly 33 displaceable in the regulating chamber 31; Hydraulic deadweight regulating channel 4: provided at the bottom of the piston assembly 33, including a flow port 41 and a detachably mounted fluid filtering structure 42; Lifting linkage cleaning mechanism 5: A movable component 51 fixed to the bottom of the connecting rod 32; a vibration drive assembly 52 disposed between the movable component 51 and the piston assembly 33; A cleaning execution component 53 driven by the vibration drive assembly 52; in: When the ductile iron gate 2 descends, water flows through the fluid filtering structure 42 and enters the regulating chamber 31, increasing the gate's deadweight. When the ductile iron gate 2 rises, the water in the regulating chamber 31 flushes out in the reverse direction to achieve self-cleaning; The lifting movement of the ductile iron gate 2 drives the cleaning execution component 53 to perform a reciprocating puncture cleaning action on the fluid filtering structure 42; Specifically, the ductile iron gate 2 is driven by a threaded lifting mechanism 6, which includes: A servo motor 61 fixed to the top of the gate frame 1; A ball screw 62 connected to the output end of the servo motor 61; A lead screw nut embedded in the ductile iron gate 2; Specifically, the adjustment cavity 31 is an inverted cone structure; The piston assembly 33 includes: Central piston plate 331; The edge piston plates 333 are symmetrically connected to the two sides of the central piston plate 331 through the elastic pre-tightening mechanism 332, and the edge piston plates 333 are sealed with the inverted conical cavity wall; Corner sealing pads 334 fixed at the four corners of the adjustment cavity 31; Edge sealing gaskets 335 provided on both sides of the central piston plate 331; A second edge sealing gasket 336 provided on the outer side of the edge piston plate 333; Specifically, the fluid filtering structure 42 is a composite filter plate, which includes: A hollow square detachable filter cartridge 421 has an external plate 422 fixed to the bottom; An embedding groove 423 is provided at the lower end of the flow opening 41; Fastening bolts 424 for fixing the external plate 422 to the embedding groove 423; A polyurethane anti-leakage pad 425 provided on the upper end of the external plate 422; A coarse filter 426 fixed to the lower portion of the detachable filter cartridge 421; A fine filter 427 fixed to the upper inner portion of the detachable filter cartridge 421; Specifically, the elastic pre-tightening mechanism 332 includes: A pushing groove 3321 is provided on the side wall of the central piston plate 331; A stainless steel pushing plate 3322 movably disposed in the pushing groove 3321; a disc spring 3323 fixed to the inner wall of the pushing groove 3321; A T-shaped limit block 3324 fixedly connected to the upper end of the pushing plate 3322; A limiting groove 3325 that slidably cooperates with the T-shaped limiting block 3324; Specifically, the movable component is a cleaning movable seat 511, the side wall of which is fixedly connected with a dovetail-shaped guide block 512; A hardened steel guide groove 513 is formed inside the central piston plate 331 of the piston assembly 33, and the dovetail guide block 512 is slidably engaged with the hardened steel guide groove 513; A buffer limit column 514 is provided at the bottom of the hardened steel guide groove 513, and a neoprene pad 515 is fixed to the top of the buffer limit column 514; A tension spring 516 is fixed to the top of the movable component, and the tension spring 516 is sleeved on the outside of the connecting rod 32; The vibration drive assembly 52 drives the vibration seat 521 in the cleaning movable seat 511 to perform vertical reciprocating motion; Specifically, the vibration drive assembly 52 includes: A vertical rack 522 fixed to the side wall of the central piston plate 331; The main driving gear 523 mounted on the side of the cleaning movable seat 511 is rotated, and the main driving gear 523 is engaged with the vertical rack 522; An eccentric crank disk 524 is coaxially fixed to the main driving gear 523, and a T-shaped slot 525 is radially opened on the surface of the eccentric crank disk 524; an eccentric shaft pin 526 slidably disposed in the T-shaped slide groove 525; A connecting rod 527 fixed to the side wall of the vibration base 521; The two ends are respectively connected to the eccentric shaft pin 526 and the hinged movable seat 528 of the connecting rod 527; Specifically, the eccentric shaft pin 526 includes: a tungsten steel slider 5261 that slides with the T-shaped slide groove 525; A handle bolt 5262 is threadedly connected to the top of the tungsten steel slider 5261, and the handle bolt 5262 has a scale indicator; Specifically, it also includes a gate guide assembly 7, and the gate guide assembly 7 includes: An inner slider 71 and an outer slider 72 symmetrically arranged on both side walls of the ductile iron gate 2; The sliding lifting grooves 73 are provided on both side walls of the gate frame 1, and the inner sliding block 71 is in clearance fit with the sliding lifting grooves 73; A wear-resistant polyurethane layer covering the surface of the inner slider 71; A copper-based self-lubricating layer containing impregnated graphite provided on the surface of the outer slider 72; Specifically, the cleaning execution component 53 is a cleaning ejector assembly, which includes: A needle body 531 vertically fixed to the bottom of the vibration base 521; A hard alloy triangular pyramid puncture tip 532 provided at the end of the needle body 531; A silicone rubber elastic compensation ring 533 integrally formed on the upper portion of the needle body 531; The carbide triangular pyramid puncture head 532 penetrates the fluid filtering structure 42 .

[0020] Working Principle: This bidirectional water-stop cast iron gate realizes bidirectional sealing, automatic water level adjustment and filtration system maintenance through the synergistic effect of mechanical linkage, hydraulic deadweight adjustment and self-cleaning function. Its core lies in: Bidirectional sealing: Dynamically adjust the sealing pressure through the inverted cone-shaped regulating chamber and piston assembly to adapt to positive and reverse water pressure; Hydraulic deadweight regulation: Use water flow into the regulating chamber to increase the gate's deadweight and assist in sealing; reduce the gate's deadweight when rising, reduce the load, and reverse flushing to achieve self-cleaning; Linked cleaning: The gate lift drives the cleaning mechanism to puncture and clean the filter structure to avoid blockage; Automatic control: servo motor drives the thread lifting mechanism to achieve precise opening and closing; No external power design: self-cleaning is achieved solely by gate movement, without the need for additional motors or hydraulic equipment.

[0021] The functions of the core components of this device are detailed as follows: Gate frame 1 Function: Serves as the gate main body support structure and provides a vertical lifting area 11 for gate movement.

[0022] Design features: The top is fixed with a connecting rod 32 and a servo motor 61 to support the bidirectional sealing system and the lifting mechanism.

[0023] Sliding lifting grooves 73 and gate guide assemblies 7 are provided on both sides to ensure smooth lifting of the gate and reduce friction. There are two-way water-stop sealing strips on both sides of the gate-shaped gate frame 1, and a bottom sealing strip is provided at the bottom. These are common technical means in the prior art and will not be elaborated here.

[0024] Ductile iron gate 2 Function: Regulate water flow by lifting and lowering to achieve two-way water stopping.

[0025] Design features: Made of high-strength ductile iron, it is pressure-resistant and corrosion-resistant.

[0026] Equipped with an inner slider 71 and an outer slider 72, which cooperate with the guide groove to prevent deviation.

[0027] The built-in lead screw nut 63 is linked with the ball screw 62 to achieve precise lifting control.

[0028] Bidirectional adaptive sealing system 3 Function: Dynamically adjust the sealing pressure to adapt to bidirectional water pressure changes.

[0029] Design features: Adjustment chamber 31: inverted conical structure, the piston assembly 33 slides in the chamber, and the elastic pre-tightening mechanism 332 is used to adjust the sealing force.

[0030] Piston assembly 33: Central piston plate 331: serves as the core moving component, driving the edge piston plates 333.

[0031] Edge piston plate 333: seals with the inverted conical cavity wall and dynamically fits through the elastic pre-tightening mechanism 332.

[0032] Sealing gasket: Multi-layer sealing corner gasket 334 and edge gasket 335 / 336 form redundant seal to prevent leakage.

[0033] Elastic preload mechanism 332: Disc spring 3323: provides preload to adapt to changes in water pressure.

[0034] Push groove and limit structure: The piston displacement range is controlled by the stainless steel push plate 3322 and the T-shaped limit block 3324.

[0035] Hydraulic deadweight adjustment channel 4 Function: Use the weight of water flow to increase the gate's deadweight and assist in sealing; reverse flushing achieves self-cleaning.

[0036] Design features: Flow port 41 and composite filter plate 42: Removable filter cartridge 421: layered filtration of coarse filter 426 + fine filter 427 to intercept impurities.

[0037] Polyurethane anti-leakage pad 425: ensures the sealing of the filter structure.

[0038] When the gate descends, water flows through the composite filter plate 42 and enters the regulating chamber, increasing the weight of the gate.

[0039] When the gate rises, the water rushes out in the opposite direction, taking away impurities and cleaning the filter plate. At the same time, the sealing strip at the bottom of the gate frame 1 can be flushed and cleaned.

[0040] Lifting linkage cleaning mechanism 5 Function: The cleaning mechanism is driven by the gate movement to automatically clear the filter plate blockage.

[0041] Design features: Active Part 51: Cleaning movable seat 511: Slidingly matched with the hardened steel guide groove 513 to limit the movement direction.

[0042] Extension spring 516: cushions movement shock and reduces mechanical fatigue.

[0043] Vibration drive assembly 52: The vertical rack 522 and the main drive gear 523 convert the gate lifting motion into gear rotation.

[0044] The eccentric crank plate 524 and the T-shaped slide 525 drive the vibration seat 521 to reciprocate through the eccentric shaft pin 526 and the connecting rod 527.

[0045] Rotary handle bolt 5262: adjusts the position of the eccentric shaft pin to control the vibration amplitude.

[0046] Cleaning actuator 53: The carbide triangular pyramid puncture head 532 penetrates the blockage of the filter plate, and the silicone rubber elastic compensation ring 533 cushions the impact and protects the filter plate.

[0047] Thread lifting mechanism 6 Function: Precisely control the lifting and lowering of gates to achieve automatic operation.

[0048] Design features: Servo motor 61: provides power and converts rotational motion into linear motion through ball screw 62.

[0049] Ball screw 62 and screw nut 63: high-precision transmission, reduced friction and extended service life.

[0050] Automatic control: programmable control of opening and closing speed and position, suitable for smart water systems.

[0051] Gate guide assembly 7 Function: Ensure vertical movement of gate, reduce deviation and wear.

[0052] Design features: Inner slider 71 and wear-resistant polyurethane layer: reduce friction coefficient and adapt to frequent opening and closing.

[0053] The outer slider 72 and the copper-based self-lubricating layer impregnated with graphite: reduce maintenance requirements and extend service life.

[0054] Summary of the working process of this device Gate closing process (descending phase) Drive action: The servo motor 61 is started, driving the ball screw 62 to rotate, driving the screw nut embedded in the ductile iron gate 2, so that the gate slowly descends along the sliding lifting groove 73.

[0055] The inner slider 71 (wear-resistant polyurethane layer) and the outer slider 72 (copper-based self-lubricating layer containing impregnated graphite) slide along the guide groove to ensure that the gate descends vertically and prevents deviation.

[0056] Bidirectional sealing and hydraulic deadweight adjustment: The water flows through the composite filter plate 42 (coarse filter 426 + fine filter 427 ) and enters the regulating chamber 31 .

[0057] The regulating chamber 31 has an inverted conical structure. When water flows in, it pushes the piston assembly 33 (central piston plate 331 + edge piston plate 333) upward, compressing the elastic preload mechanism 332 (disc spring 3323) to dynamically adjust the sealing pressure.

[0058] The weight of the gate increases due to the water storage in the regulating chamber 31, which enhances the sealing effect and adapts to the reverse water pressure (such as the upstream water level is higher than the downstream).

[0059] Cleaning agency preparation: During the gate's descent, the cleaning movable seat 511 (cleaning movable component 51) slides along the hardened steel guide groove 513, and the tension spring 516 is stretched to store energy for subsequent cleaning actions.

[0060] The vertical rack 522 is meshed with the main driving gear 523 , and the eccentric crank plate 524 rotates, which initially drives the vibration seat 521 to move, thereby presetting a motion trajectory for the puncture action of the cleaning ejector 531 .

[0061] Gate opening process (rising stage) Drive action: The servo motor 61 rotates in the reverse direction, and the ball screw 62 rotates in the opposite direction, driving the gate to rise.

[0062] Self-cleaning mechanism activated: The water in the regulating chamber 31 is squeezed out in the reverse direction due to the rising of the gate, and is discharged through the flow port 41 of the composite filter plate 42, taking away impurities (such as mud and algae) on the filter screen.

[0063] The tension spring 516 rebounds, pushing the cleaning movable seat 511 to return to its original position, and the eccentric crank disk 524 continues to rotate, driving the vibration seat 521 to move vertically back and forth.

[0064] Linked puncture cleaning: The vibration seat 521 drives the cleaning ejector assembly 53 (hard alloy triangular pyramid puncture head 532 ) to puncture the composite filter plate 42 at high frequency.

[0065] The silicone rubber elastic compensation ring 533 cushions the impact and prevents excessive puncture from damaging the filter. At the same time, the elastic deformation of the silicone rubber can clear deep blockages.

[0066] Cleaning mechanism operates independently (optional mode) Manual or automatic cleaning trigger: When the filter plate 42 is severely clogged, the position of the eccentric shaft pin 526 can be adjusted by rotating the handle bolt 5262 to amplify the vibration amplitude and enhance the cleaning force.

[0067] The servo motor 61 can be started briefly to only drive the cleaning mechanism to operate independently without fully opening or closing the gate.

[0068] Filter plate disassembly and maintenance: If the blockage cannot be resolved by self-cleaning, the external plate 422 can be removed (by tightening the bolts 424 ) and the coarse filter 426 and the fine filter 427 in the composite filter cartridge 421 can be replaced or cleaned.

[0069] Automation and intelligent control Programmatic opening and closing: The servo motor 61 is programmed through a PLC or intelligent control system to set the gate opening, descending / ascending speed and cleaning cycle to adapt to different water level requirements.

[0070] Condition Monitoring: The integrated pressure sensor (optional) monitors the water pressure in the regulating chamber and provides feedback on the sealing status. The flow sensor (optional) monitors the clogging degree of the filter plate and triggers the cleaning action.

[0071] Cleaning mechanism failure: The neoprene pad 515 and the buffer limit column 514 absorb vibration impact and protect the cleaning movable seat 511 from being damaged due to overload.

[0072] 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," "includes," 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.

[0073] 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 two-way water-stop cast iron gate with protective function, characterized in that: include: A gate-shaped gate frame (1) having a vertical lifting area (11) provided therein; A ductile iron gate (2) is movably installed in the vertical lifting area (11); Bidirectional adaptive sealing system (3): An adjusting chamber (31) provided inside the ductile iron gate (2) and extending vertically; A connecting rod (32) fixed to the top of the gate frame (1) and extending into the regulating cavity (31); A piston assembly (33) displaceable within the regulating chamber (31); A hydraulic deadweight regulating channel (4) is provided at the bottom of the piston assembly (33), and includes a flow port (41) and a detachably mounted fluid filtering structure (42); Lifting linkage cleaning mechanism (5): A movable component (51) fixed to the bottom of the connecting rod (32); a vibration drive assembly (52) disposed between the movable component (51) and the piston assembly (33); a cleaning execution component (53) driven by the vibration drive assembly (52); in: When the ductile iron gate (2) descends, water flows through the fluid filtering structure (42) and enters the regulating chamber (31), increasing the gate's deadweight; When the ductile iron gate (2) rises, the water in the regulating chamber (31) flushes out in the reverse direction to achieve self-cleaning; The lifting movement of the ductile iron gate (2) drives the cleaning execution component (53) to perform a reciprocating puncture cleaning action on the fluid filtering structure (42).

2. The gate according to claim 1, characterized in that: The ductile iron gate (2) is driven by a threaded lifting mechanism (6), and the threaded lifting mechanism (6) comprises: A servo motor (61) fixed to the top of the gate frame (1); a ball screw (62) connected to the output end of the servo motor (61); A lead screw nut embedded in the interior of the ductile iron gate (2).

3. The gate according to claim 1, characterized in that: The regulating cavity (31) is an inverted cone-shaped structure; The piston assembly (33) comprises: Central piston plate (331); Edge piston plates (333) symmetrically connected to both sides of the central piston plate (331) via an elastic pre-tightening mechanism (332), the edge piston plates (333) being in sealing engagement with the inverted conical cavity wall; Corner sealing pads (334) fixed at the four corners of the regulating cavity (31); Edge sealing gaskets (335) provided on both sides of the central piston plate (331); A second edge sealing gasket (336) is provided on the outer side of the edge piston plate (333).

4. The gate according to claim 1, characterized in that: The fluid filtering structure (42) is a composite filter plate, which includes: A hollow square detachable filter cartridge (421) with an external connection plate (422) fixedly connected to the bottom; An embedding groove (423) provided at the lower end of the circulation port (41); A fastening bolt (424) fixing the external plate (422) to the embedded groove (423); a polyurethane anti-leakage pad (425) provided on the upper end of the external connecting plate (422); a coarse filter screen (426) fixed to the lower inner portion of the detachable filter cartridge (421); A fine filter screen (427) is fixed to the upper inner portion of the detachable filter cartridge (421).

5. The gate according to claim 3, characterized in that: The elastic pre-tightening mechanism (332) comprises: A pushing groove (3321) is provided on the side wall of the central piston plate (331); A stainless steel pushing plate (3322) movably disposed in the pushing groove (3321); a disc spring (3323) fixedly connected to the inner wall of the pushing groove (3321); A T-shaped limit block (3324) fixedly connected to the upper end of the pushing plate (3322); A limiting groove (3325) that slidably cooperates with the T-shaped limiting block (3324).

6. The gate according to claim 1, characterized in that: The movable component is a cleaning movable seat (511), the side wall of which is fixedly connected with a dovetail-shaped guide block (512); A hardened steel guide groove (513) is provided inside the central piston plate (331) of the piston assembly (33), and the dovetail guide block (512) is slidably engaged with the hardened steel guide groove (513); A buffer limit column (514) is provided at the bottom of the hardened steel guide groove (513), and a neoprene pad (515) is fixedly connected to the top of the buffer limit column (514); A tension spring (516) is fixedly connected to the top of the movable component, and the tension spring (516) is sleeved on the outside of the connecting rod (32); The vibration drive assembly (52) drives the vibration seat (521) in the cleaning movable seat (511) to perform vertical reciprocating motion.

7. The gate according to claim 6, characterized in that: The vibration drive assembly (52) includes: A vertical rack (522) fixed to the side wall of the central piston plate (331); Rotating a main drive gear (523) mounted on a flank of the cleaning movable seat (511), wherein the main drive gear (523) is engaged with the vertical rack (522); An eccentric crank disk (524) coaxially fixed to the main drive gear (523), wherein a T-shaped sliding groove (525) is radially provided on the disk surface of the eccentric crank disk (524); an eccentric shaft pin (526) slidably arranged in the T-shaped sliding groove (525); a connecting rod (527) fixedly arranged on a side wall of the vibration seat (521); The two ends are respectively connected to the hinged movable seat (528) of the eccentric shaft pin (526) and the connecting rod (527).

8. The gate according to claim 7, characterized in that: The eccentric shaft pin (526) includes: a tungsten steel slider (5261) slidingly engaged with the T-shaped slide groove (525); A rotary handle bolt (5262) ​​is threadedly connected to the top of the tungsten steel slider (5261), and the rotary handle bolt (5262) ​​has a scale indication.

9. The gate according to claim 1, characterized in that: It also includes a gate guide assembly (7), which includes: An inner sliding block (71) and an outer sliding block (72) symmetrically arranged on both side walls of the ductile iron gate (2); Sliding lifting grooves (73) are provided on both side walls of the gate-shaped gate frame (1), and the inner sliding block (71) is clearance-matched with the sliding lifting grooves (73); a wear-resistant polyurethane layer coated on the surface of the inner slider (71); A graphite-impregnated copper-based self-lubricating layer is provided on the surface of the outer sliding block (72).

10. The gate according to claim 6, characterized in that: The cleaning execution component (53) is a cleaning ejector assembly, which includes: A needle body (531) vertically fixed to the bottom of the vibration seat (521); a hard alloy triangular pyramid puncture head (532) provided at the end of the needle body (531); A silicone rubber elastic compensation ring (533) integrally formed on the upper portion of the needle body (531); The hard alloy triangular pyramid puncture head (532) penetrates the fluid filtering structure (42).

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