Pulse rinsing cleaning device for landscape bridge steel structure

Abstract

The present application relates to the field of bridge maintenance, and discloses a landscape bridge steel structure pulse cleaning device, which comprises a supporting seat, a main flow pipe, a push flow assembly, a driving assembly, a reset assembly and a cleaning assembly. The supporting seat is fixedly connected with the main flow pipe, and the push flow assembly is slidably arranged in the main flow pipe. The driving assembly is arranged on the supporting seat and used for driving the push flow assembly to move to compress the reset assembly to accumulate potential energy. The reset assembly releases the potential energy to drive the push flow assembly to quickly reset, extrude the liquid in the main flow pipe to generate a pulse water flow. The cleaning assembly is arranged at both ends of the main flow pipe and used for switching the fluid discharge path and opening the cleaning port. The present application uses pulse jet to improve the stripping efficiency of rust on the surface of the steel structure. The internal pipeline is self-cleaned through the cleaning assembly, so that the mixed corrosion of the chemicals is avoided. The negative pressure generated by the push flow assembly can suck and recycle the accumulated water in the gap, prevent secondary rust, and solve the problem that the secondary rust is caused by the residual accumulated water after the cleaning of the complex steel structure surface.

Description

Technical Field

[0001] This invention relates to the field of bridge maintenance, and more particularly to a pulse flushing and cleaning device for the steel structure of landscape bridges. Background Technology

[0002] As important carriers of urban transportation and landscape, landscape bridges have steel structures that are exposed to the natural environment for extended periods, making their surfaces prone to accumulating dust, oil, bird droppings, and oxide rust. To maintain the structural safety and aesthetic cleanliness of these bridges, regular deep cleaning and maintenance are essential.

[0003] Currently, some automated equipment has been attempted in existing technologies for cleaning bridge crash barriers or steel structures. For example, Chinese invention patent CN 113250127 B discloses an integrated device for washing and collecting construction waste and sewage from bridge crash barriers in large cities. This solution uses a baffle mechanism to enclose the crash barrier, utilizes a pressure water tank connected to a spray pipe for washing, and has a horizontal plate and manifold at the bottom to collect fallen construction waste and sewage by gravity. This technical solution, to some extent, solves the problem of sewage splashing and environmental pollution caused by open washing methods.

[0004] However, in practical applications, the aforementioned existing technologies still have the following obvious drawbacks:

[0005] The aforementioned patent uses a pressure storage tank for direct water supply, which is essentially a constant-pressure continuous spraying method. For stubborn rust or oxide scale with extremely strong adhesion to steel structure surfaces, this steady water flow, lacking instantaneous bursts of force, often fails to completely remove it, resulting in low rust removal and cleaning efficiency. To improve cleaning effectiveness, extremely high-pressure pump stations are typically required, significantly increasing the energy consumption and size of the equipment. The wastewater recovery mechanism in the aforementioned patent relies on the principle of gravity, meaning it can only collect wastewater that drips naturally under gravity. However, the design of steel structure nodes in landscape bridges is often extremely complex, with numerous stiffening rib grooves, non-closed gaps, and structural dead angles. After cleaning, wastewater and chemical waste easily accumulate deep within these low-lying gaps, unable to drain naturally by gravity. Existing equipment lacks active negative pressure suction, failing to remove deep-seated liquids. This leads to prolonged liquid retention, creating a concentrated galvanic effect that accelerates secondary corrosion of steel structure joints. Deep maintenance of steel structures typically involves multiple processes such as rust removal, cleaning, and passivation, requiring the use of different chemical agents, such as acidic or alkaline ones. The existing piping design primarily considers unidirectional output and lacks a self-cleaning mechanism for internal piping and valves. When switching agents, residual agents from the previous process (such as strong acids) in the pump body or piping dead zones can easily react with the newly injected agent or cause long-term corrosion of internal sealing elements, increasing equipment failure rates and maintenance difficulty. Summary of the Invention

[0006] To overcome the above shortcomings, the present invention provides a pulse flushing and cleaning device for landscape bridge steel structures, which aims to improve the problems in the prior art of bridge steel structure cleaning that rely on constant pressure water supply to remove rust, which has poor effect, makes it difficult to clean and maintain the internal pipelines of the equipment, and makes it difficult to recover water that accumulates in narrow gaps.

[0007] A pulse flushing and cleaning device for a landscape bridge steel structure includes a support base, a main flow pipe, a flow propulsion assembly, a drive assembly, a reset assembly, an inlet pipe, and a cleaning assembly. The upper end of the support base is fixedly connected to the main flow pipe, which is a hollow tubular structure open at both ends. The flow propulsion assembly is slidably disposed inside the main flow pipe to propel the liquid flow within it. The drive assembly is disposed on the support base and drives the flow propulsion assembly to move axially along the main flow pipe to compress the reset assembly and accumulate potential energy. The reset assembly is disposed on the outer wall of the main flow pipe and connected to the flow propulsion assembly. After the drive assembly releases its thrust on the flow propulsion assembly, the reset assembly releases its potential energy, causing the flow propulsion assembly to quickly reset, squeezing the liquid inside the main flow pipe to generate a pulsed water flow. The inlet pipe is connected to the outer wall of the main flow pipe. The cleaning assembly is disposed at the left and right openings of the main flow pipe to switch the fluid discharge path and clean the interior of the main flow pipe.

[0008] Furthermore, a groove is formed on the outer wall of the main flow pipe. The flow propulsion assembly includes a piston block, a slider, a baffle, and a sliding frame. The piston block is slidably and sealingly disposed inside the main flow pipe; the slider is fixedly connected to the outer wall of the piston block and slidably disposed within the groove; the baffle is fixedly connected to the outer wall of the slider and conforms to the outer wall of the main flow pipe to seal the groove; the sliding frame is fixedly connected to the outer wall of the baffle and slidably sleeved on the outer wall of the main flow pipe.

[0009] Furthermore, the driving assembly includes a drive motor, a cam, and a protrusion. The drive motor is mounted on the upper surface of the support base, and its output shaft is connected to the cam. The protrusion is fixed on the cam at a position away from the center point. The rotation of the drive motor causes the protrusion to periodically press against and push the sliding frame to move. The reset assembly includes a slide rod, a reset spring, and an air spring. The reset spring is sleeved on the slide rod and is used to generate elastic deformation when the sliding frame is pressed and moved. The air spring is fixed to the outer wall of the main flow pipe and located at the end of the sliding frame's reset stroke, and is used to buffer the impact force during the sliding frame's reset.

[0010] Furthermore, the cleaning assembly includes a drain pipe, an adjusting sleeve two, and an adjusting rod. The drain pipe is fixed to the left end of the main pipe, and its outer wall has two sets of drain ports spaced vertically. The adjusting sleeve two is rotatably connected to the inner wall of the drain pipe, and its outer wall has a connecting hole. By rotating the adjusting rod, the adjusting sleeve two is rotated, so that the connecting hole selectively connects with one set of drain ports. The cleaning assembly also includes a cleaning port located at the right end of the main pipe and an adjusting sleeve one rotatably connected to its inner wall. The adjusting rod passes through the outer wall of the cleaning port and connects to the adjusting sleeve one, used to synchronously drive the adjusting sleeve one and the adjusting sleeve two to rotate, and cooperates with the closing block structure to realize the opening or closing of the cleaning port.

[0011] The present invention also provides a pulse flushing and cleaning system for landscape bridge steel structures, including the above-mentioned pulse flushing and cleaning device for landscape bridge steel structures, and further including flushing pipelines, metal universal pipes and flushing heads.

[0012] The present invention has the following beneficial effects:

[0013] 1. This invention utilizes a drive component in conjunction with a reset component. A cam compresses a reset spring to accumulate potential energy, and the instantaneous elastic force upon spring release propels the piston block to reset rapidly. Combined with three sets of one-way valves and a ring piston structure within the main flow pipe, the continuously input liquid is converted into a high-frequency, high-velocity pulse jet. The strong shearing force generated by the pulsed water flow removes stubborn dirt. More importantly, this invention features frustoconical drainage sleeves on both sides of the piston block. The velocity difference as the liquid flows through the variable-diameter channel entrains air, forming numerous microbubbles in the jet. When the pulsed water flow carrying these bubbles touches the steel structure surface, the micro-explosion effect generated by the bubble bursts, combined with the impact force of the water flow, significantly enhances the ability to peel and break up dense rust layers and stubborn adhesions.

[0014] 2. This invention, through the inclusion of a cleaning component, enables convenient switching between working and maintenance modes. By linking the adjusting rod with adjusting sleeve one and adjusting sleeve two, the path to the flushing head can be physically blocked, and the drainage path can be switched to the lower drainage port, while simultaneously opening the side cleaning port. In this mode, the cleaning medium is forcibly drawn in under the guidance of the one-way valve and flushes the inner wall of the main pipe, the piston block, and the sealing gaps, while waste liquid is directly discharged from below. This structure not only avoids the corrosion risk caused by the mixing of different chemical agents inside the pipe but also enables deep cleaning and maintenance of internal core components without disassembling the equipment, extending the equipment's service life.

[0015] 3. This invention utilizes the reciprocating motion of the flow-pushing component within the main flow pipe to create periodic changes in the volume of the water storage chamber. Combined with the flow path guidance of the cleaning component, this enables the device to perform negative pressure suction. After connecting the cleaning port to an external pipeline, the strong negative pressure generated in the water storage chamber during the piston's reset stroke forcefully draws in accumulated water and residual chemical waste from deep grooves and crevices in the steel structure, which is then discharged through the lower drain port. This function solves the problem of existing equipment's difficulty in cleaning water accumulation in structural dead corners, effectively preventing secondary corrosion of the steel structure caused by liquid retention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overall device in this invention;

[0017] Figure 2 This is a rear view of the three-dimensional structure of the overall device in this invention;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the overall device in this invention;

[0019] Figure 4 This is a three-dimensional cross-sectional diagram of the propulsion component in this invention.

[0020] Figure 5 This is a three-dimensional cross-sectional diagram of the cleaning component in this invention;

[0021] Figure 6 This is a three-dimensional cross-sectional view of the threaded sleeve in this invention;

[0022] Figure 7 This is a three-dimensional structural diagram of the outer shell in this invention;

[0023] Figure 8 This is a three-dimensional structural diagram of the first and second closed blocks in this invention.

[0024] Legend:

[0025] 1. Support base; 2. Main flow pipe; 3. Flow propulsion assembly; 31. Sliding frame; 32. Slider; 33. Piston block; 34. Drainage sleeve; 35. Limiting ring; 36. Slide groove; 37. Baffle; 4. Drive assembly; 41. Drive motor; 42. Cam; 43. Protrusion; 5. Reset assembly; 51. Slide rod; 52. Air spring; 53. Reset spring; 6. Inlet pipe; 7. Cleaning assembly; 71. Drain pipe; 72. Drain port; 73. Cleaning port; 74. Adjusting sleeve one; 75. Adjusting rod; 76. Connecting hole; 77. Adjusting sleeve two; 78. Sealing block one; 79. Sealing block two; 710. Support ring; 711. Connecting rod; 712. Threaded sleeve; 713. Locking screw; 8. Check valve; 9. Outer shell. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Reference Figure 1 - Figure 8 This invention provides an embodiment of a pulse flushing and cleaning device for a landscape bridge steel structure, comprising a support base 1 and an outer shell 9. A main flow pipe 2 is fixedly connected to the upper end of the support base 1. The main flow pipe 2 is a hollow tubular structure with openings at both ends for the flushing liquid to pass through. A flow propulsion component 3 is provided on its inner wall to actively guide the liquid to pass quickly through the interior of the main flow pipe 2. In this way, the rapidly flowing liquid can be used to flush the landscape bridge steel structure. The rapidly flowing water can effectively peel off the rust and adhesives adhering to the outer wall of the landscape bridge steel structure. Compared with the prior art, which mainly relies on a water pump to directly supply water, this device has a better flushing effect and can significantly improve the cleaning effect. The outer shell 9 adopts a split structure and is installed on the upper surface of the support base 1 to provide protection for other components.

[0028] A drive assembly 4 is provided on the upper surface of the support base 1, which provides power for the movement of the propulsion assembly 3. A reset assembly 5 is provided on the outer wall of the main stream pipe 2, which drives the propulsion assembly 3 to reset after movement to achieve continuous flushing. A cleaning assembly 7 is provided at the openings at both ends of the main stream pipe 2, which guides the cleaning fluid through the interior of the main stream pipe 2 to perform targeted cleaning, thereby reducing the probability of residual impurities inside the main stream pipe 2. An inlet pipe 6 is also fixedly connected to the outer wall of the main stream pipe 2, which connects the main stream pipe 2 and the flushing pipeline. The flushing pipeline is responsible for inputting the cleaning liquid into the interior of the main stream pipe 2. Compared with the existing technology that requires multiple sets of equipment to achieve the function, this device itself has a high degree of integration. Therefore, it can be moved directly by various large vehicles during use, which makes it convenient to move directly to the site where it needs to be treated, thus reducing transportation costs.

[0029] Reference Figure 3 - Figure 5The flow propulsion assembly 3 includes a piston block 33, which is slidably connected to the inner wall of the main flow pipe 2. The piston block 33 is annular, with liquid passing through its center. The piston block 33 divides the inner wall space of the main flow pipe 2 into two parts: the left side of the piston block 33 is a drainage chamber, and the right side is a water storage chamber. Two sets of flow guide sleeves 34 are symmetrically arranged at the left and right ends of the piston block 33. The flow guide sleeves 34 are hollow frustum-shaped with a smaller opening at the end near the piston block 33. Three sets of one-way valves 8 are installed on the inner wall of the main flow pipe 2. One set of one-way valves 8 is installed on the inner wall of the inlet pipe 6, another set of one-way valves 8 is installed at the hollow center of the piston block 33, and the last set of one-way valves 8 is installed at the opening at the left end of the main flow pipe 2. All three sets of one-way valves 8 are configured to allow water to flow only to the left.

[0030] Thus, when piston block 33 moves to the right, the liquid inside the water storage chamber enters the drain chamber through the one-way valve 8 at the center of piston block 33; when piston block 33 moves to the left, the liquid inside the drain chamber is discharged through the one-way valve 8 at the left end of the main flow pipe 2, while external liquid enters the water storage chamber through the one-way valve 8 inside the inlet pipe 6, replenishing the liquid inside the water storage chamber. Continuous flushing is achieved through the reciprocating movement of piston block 33. Simultaneously, frustoconical drainage sleeves 34 are fixedly connected to both ends of piston block 33. When piston block 33 moves to the right, the opening size of the drainage sleeve 34 gradually decreases, causing the liquid to flow faster through the interior of the drainage sleeve 34. After the liquid passes through piston block 33, the opening size gradually increases, causing the liquid flow rate to decrease. At the same time, air inside the main flow pipe 2 mixes into the liquid, forming fine bubbles. When the liquid contacts the bridge steel structure, the bursting of these bubbles further enhances the flushing and cleaning effect.

[0031] Reference Figure 3 - Figure 5 A slider 32 is fixedly connected to the outer wall of the piston block 33. A groove 36 is provided on the outer wall of the main flow pipe 2. The slider 32 slides on the inner wall of the groove 36. The groove 36 can guide and restrict the movement of the slider 32, and can prevent the piston block 33 from moving excessively or deviating. Two sets of limit rings 35 are fixedly connected to the inner wall of the main flow pipe 2. The two sets of limit rings 35 can further restrict the displacement limit distance of the piston block 33 by blocking the flow guide sleeve 34. A baffle 37 is fixedly connected to the outer wall of the slider 32. The baffle 37 is set as an arc and its inner wall fits the outer wall of the main flow pipe 2. When the slider 32 moves left and right, the baffle 37 can block the outer wall of the groove 36, so as to prevent the liquid from flowing out through the groove 36. A sliding frame 31 is fixedly connected to the outer wall of the baffle 37. The sliding frame 31 is slidably connected to the outer wall of the main flow pipe 2. The displacement of the baffle 37, slider 32 and piston block 33 can be controlled by controlling the movement of the sliding frame 31.

[0032] Reference Figure 3 - Figure 5 The reset assembly 5 includes an air spring 52, which is fixedly connected to the outer wall of the main flow pipe 2. The sliding frame 31 slides on the outer wall of the slide rod 51. The slide rod 51 can guide the movement of the sliding frame 31 to ensure that the sliding frame 31 moves horizontally left and right. The sliding frame 31 is elastically connected to the outer wall of the main flow pipe 2 through a reset spring 53. The reset spring 53 can keep the sliding frame 31 in the rightmost position at all times through its own elastic deformation capability. The air spring 52 is fixedly connected to the outer wall of the main flow pipe 2. When the sliding frame 31 moves left and right, the air spring 52 can support the sliding frame 31 to prevent it from directly hitting the outer wall of the main flow pipe 2 and causing damage.

[0033] Reference Figure 3 - Figure 5 The drive assembly 4 includes a drive motor 41, which is mounted on the upper surface of the support base 1. The output shaft of the drive motor 41 does not intersect with the central axis of the main flow pipe 2, and is used to provide power for the movement of the propulsion assembly 3. A cam 42 is fixedly connected to the upper surface of the drive motor 41, and a protrusion 43 is fixedly connected to the upper surface of the cam 42 away from the center point. The drive motor 41 is set to rotate clockwise. When the drive motor 41 starts working, it will drive the cam 42 to rotate clockwise. When the cam 42 rotates, it will drive the protrusion 43 to rotate. When the protrusion 43 rotates, it will press the sliding frame. The outer wall of 31 forces it to move to the right. The movement of sliding frame 31 to the right will squeeze the return spring 53 and cause it to contract. As the protrusion 43 continues to rotate, when it reaches the rightmost position, the protrusion 43 will separate from the sliding frame 31. At this time, the return spring 53 will push the sliding frame 31 to reset. During the contraction of the return spring 53, energy will be continuously accumulated inside. When the protrusion 43 stops squeezing the sliding frame 31, the return spring 53 can release the energy accumulated inside instantly, which can drive the piston block 33 to move sharply to the left. Through the continuous rotation of cam 42, pulse flushing can be continuously achieved.

[0034] Reference Figure 3 - Figure 8The cleaning component 7 includes a cleaning port 73, which is installed at the right end of the main stream pipe 2. The cleaning port 73 is used to connect to a cleaning pipeline to clean the internal structure of the main stream pipe 2. The cleaning pipeline is used to introduce a liquid into the main stream pipe 2 to clean its inner wall; this is typically a steel structure cleaner or rust remover. Since this is existing technology and can be implemented by those skilled in the art, it will not be described in detail here. A drain pipe 71 is fixedly connected to the left end of the main stream pipe 2. Two sets of drain ports 72 are arranged sequentially from top to bottom on the outer wall of the drain pipe 71. The upper set of drain ports 72 is used to connect to the water pump output. The other end of the flushing pipe is connected to a flushing head for flushing. This embodiment... The flushing head and flushing pipe used are connected by a metal universal joint, which is composed of multiple metal joints connected in series. It can be bent and adjusted at any angle, and can automatically reshape itself after being released. A set of drain ports 72 at the bottom is used to discharge the wastewater generated after cleaning. An adjusting sleeve 74 is rotatably connected to the inner wall of the cleaning port 73. A sealing block 78 is fixedly connected to the left end of the adjusting sleeve 74. A sealing block 79 is rotatably connected to the left end of the sealing block 78. The sealing block 78 and sealing block 79 together form a complete circular plate, thus sealing the inner wall of the cleaning port 73. The sealing block 79 is fixedly connected to the inner wall of the cleaning port 73. The drain pipe 71... An adjusting sleeve 2 77 is rotatably connected to the inner wall. The outer wall of the adjusting sleeve 2 77 is provided with a connecting hole 76. By rotating the adjusting sleeve 2 77, the connecting hole 76 can be controlled to alternately connect with two sets of drainage ports 72. The adjusting sleeve 2 77 and the adjusting sleeve 1 74 are fixedly connected by an adjusting rod 75. The adjusting rod 75 passes through and slides on the outer wall of the drainage pipe 71 and the cleaning port 73. By moving the adjusting rod 75, the adjusting sleeve 1 74 and the adjusting sleeve 2 77 can be rotated simultaneously. When the sealing block 1 78 rotates to the state of coinciding with the sealing block 2 79, the connecting hole 76 will coincide with the lower set of drainage ports 72. At this time, the main flow pipe 2 can be injected into the main flow pipe 2 through the cleaning port 73. When the cleaning agent is added, the cleaning fluid will be discharged through the opening at the left end of the adjusting sleeve 77. This allows for cleaning of the inside of the main pipe 2, while the discharged cleaning fluid can also clean the steel structure, removing residual steel structure cleaning agent or rust remover from its surface. Compared to existing technologies that require multiple sets of pipelines or flushing devices during operation, this device can switch functions by adjusting the internal structure, making it more convenient to use. If the external hose is connected to the cleaning port 73 and one end of the hose opening is placed in a groove or crevice where water easily accumulates, the device can be used to extract residual sewage from the groove or crevice, facilitating sewage recycling after cleaning.

[0035] Reference Figure 4 - Figure 6The cleaning component 7 also includes a support ring 710, which is rotatably connected to the outer wall of the main flow pipe 2. The support ring 710 and the adjusting rod 75 are fixedly connected through the connecting rod 711. When the adjusting rod 75 rotates, it will drive the support ring 710 to rotate through the connecting rod 711. A threaded sleeve 712 is fixedly connected to the end of the outer wall of the support ring 710 away from the connecting rod 711. The inner wall of the threaded sleeve 712 is threaded through and connected to a locking screw 713. By rotating the locking screw 713, the locking screw 713 can be driven to press against the outer wall of the main flow pipe 2, thereby increasing the resistance that the support ring 710 needs to overcome to rotate, thus preventing the adjusting rod 75 from rotating arbitrarily.

[0036] Working principle: During the rinsing operation, first tighten the locking screw 713 to fix the adjusting rod 75 and the support ring 710, ensuring that the cleaning component 7 is in the working state of closing the cleaning port 73 and connecting to the upper rinsing pipeline. Start the drive motor 41, and the motor drives the cam 42 to rotate clockwise. The protrusion 43 pushes the sliding frame 31 and the flow propulsion component 3 to move slowly to the right. During this process, the water storage chamber on the right side of the piston block 33 is pressurized, forcing the liquid to open the one-way valve 8 in the center of the piston and enter the left drain chamber; when the liquid flows through the frustum-shaped drain sleeve 34, the flow rate increases sharply, and air is drawn into the pipe to form fine bubbles, preparing for subsequent rinsing. When the protrusion 43 separates from the sliding frame 31, the return spring 53 releases potential energy to drive the piston block 33 to quickly return to the left. At this moment, the one-way valve 8 at the center of the piston closes, and the piston block 33 violently squeezes the gas-liquid mixture in the left drainage chamber, forcing open the one-way valve 8 at the left end of the main flow pipe 2, forming a high-velocity pulse jet rich in microbubbles. Guided by the regulating sleeve 77, it is ejected from the upper drain port 72, using bubble bursts and water flow shear force to peel off the rust on the steel structure surface. At the same time, the piston block 33 resets to the left, causing the volume of the right water storage chamber to increase and generate negative pressure. The external liquid pushes open the one-way valve 8 in the inlet pipe 6 to automatically replenish the water storage chamber, completing a single pulse cycle.

[0037] During internal self-cleaning maintenance, with the machine stopped, loosen the locking screw 713 and move the adjusting rod 75 to drive the adjusting sleeve 1 74 and adjusting sleeve 2 77 to rotate synchronously. At the liquid inlet, adjusting sleeve 1 74 releases the blockage of the cleaning port 73; at the liquid outlet, adjusting sleeve 2 77 switches the connecting hole 76 to the lower drain port 72, physically blocking the path to the flushing head. At this time, the cleaning fluid is injected into the cleaning port 73, and the drive motor 41 is started to make the propulsion assembly 3 reciprocate. Using the guiding action of the one-way valve 8, the cleaning fluid is drawn into the water storage chamber and forced through the guide sleeve 34 to flush the piston block 33 and the inner wall of the main flow pipe 2, and finally discharged from the lower drain port 72 carrying the flushed dirt. This process realizes the directional circulation flushing of the cleaning fluid in the pipe through the mechanical pumping action, effectively preventing the accumulation of chemical residues or impurities.

[0038] For the recovery of water accumulated in grooves or crevices of steel structures, maintain the pipeline connection status in the self-cleaning mode described above (cleaning port 73 open, connecting hole 76 connected to the lower drain port 72). Connect one end of the external hose to the cleaning port 73 and place the other end into the water accumulation area of ​​the steel structure. Start the device, utilizing the reciprocating motion of the propulsion component 3 to create a pumping effect: when the return spring 53 pushes the piston block 33 to the left, the right water storage chamber rapidly expands, generating a strong negative pressure. Combined with the shut-off action of the one-way valve 8 in the inlet pipe 6 (or closing the inlet pipe valve at this time), the external water is forcefully drawn into the water storage chamber through the hose; when the piston block 33 moves to the right, the water is forced into the left drain chamber; during the subsequent leftward movement, the water is squeezed and discharged into the collection container through the lower drain port 72. This process transforms the pulse generator into a one-way water pump, which can efficiently recover sewage from dead corners that are difficult for manual access, preventing secondary corrosion of the steel structure caused by accumulated water.

[0039] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to describe the invention and not to require the invention to be constructed or operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" in this invention should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0040] The above description represents the preferred mode of operation of the present invention. The specific operational modes are provided solely for a better understanding of the invention's concept. Those skilled in the art can make various improvements or equivalent substitutions based on the principles of this invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of this invention.

Claims

1. A pulse flushing and cleaning device for steel structures of landscape bridges, characterized in that: It includes a support base (1), a main flow pipe (2), a flow propulsion assembly (3), a drive assembly (4), a reset assembly (5), an inlet pipe (6), and a cleaning assembly (7); The main channel pipe (2) is fixedly connected to the upper end of the support base (1). The main channel pipe (2) is a hollow tubular structure with openings at both the left and right ends. The propulsion component (3) is slidably disposed inside the main flow pipe (2) to propel the liquid flow within the main flow pipe (2); The driving component (4) is disposed on the support base (1) and is used to drive the flow propulsion component (3) to move axially along the main flow pipe (2) to accumulate potential energy; The reset component (5) is disposed on the outer wall of the main flow pipe (2) and connected to the flow propulsion component (3), and is used to drive the flow propulsion component (3) to quickly reset in order to generate a pulse water flow when the drive component (4) releases the flow propulsion component (3); The inlet pipe (6) is connected to the outer wall of the main flow pipe (2); The cleaning component (7) is located at the left and right openings of the main flow pipe (2) and is used to switch the path of fluid discharge and to clean the inside of the main flow pipe (2).

2. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 1, characterized in that: The outer wall of the main pipe (2) is provided with a groove (36); The propulsion assembly (3) includes a piston block (33), a slider (32), a baffle (37), and a sliding frame (31). The piston block (33) is slidably connected to the inner wall of the main flow pipe (2); The slider (32) is fixedly connected to the outer wall of the piston block (33), and the slider (32) is slidably disposed in the groove (36); The baffle (37) is fixedly connected to the outer wall of the slider (32), and the baffle (37) is attached to the outer wall of the main pipe (2) to block the groove (36). The sliding frame (31) is fixedly connected to the outer wall of the baffle (37), and the sliding frame (31) is slidably sleeved on the outer wall of the main pipe (2).

3. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 2, characterized in that: The piston block (33) is set as an annular shape, with liquid passing through its center. The piston block (33) divides the inner wall space of the main pipe (2) into a drainage chamber on the left and a water storage chamber on the right. The inner wall of the main pipe (2) is equipped with three sets of one-way valves (8), and all three sets of one-way valves (8) are configured to allow water to flow only to the left. One set of the one-way valves (8) is installed on the inner wall of the inlet pipe (6), another set of the one-way valves (8) is installed in the hollow center of the piston block (33), and the last set of the one-way valves (8) is installed at the left end opening of the main flow pipe (2).

4. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 3, characterized in that: Two sets of drainage sleeves (34) are symmetrically fixedly connected to the left and right ends of the piston block (33). The drainage sleeves (34) are hollow frustum-shaped and have a smaller opening at the end near the piston block (33). Two sets of limiting rings (35) are fixedly connected to the inner wall of the main pipe (2). The limiting rings (35) are used to limit the displacement limit distance of the piston block (33) by blocking the drainage sleeve (34).

5. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 2, characterized in that: The drive assembly (4) includes a drive motor (41), a cam (42), and a protrusion (43). The drive motor (41) is mounted on the upper surface of the support base (1), and its output shaft does not intersect with the central axis of the main pipe (2); The cam (42) is fixedly connected to the output shaft of the drive motor (41); The protrusion (43) is fixedly connected to the upper surface of the cam (42) at a position away from the center point; When the drive motor (41) rotates, the protrusion (43) can periodically press against and push the sliding frame (31) to move.

6. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 2, characterized in that: The reset assembly (5) includes a slide bar (51), a reset spring (53), and an air spring (52); The slide bar (51) is fixedly installed on the outer wall of the main pipe (2), and the sliding frame (31) is slidably connected to the outer wall of the slide bar (51); The return spring (53) is sleeved on the slide rod (51), and the two ends of the return spring (53) abut against the outer wall structure of the main pipe (2) and the sliding frame (31) respectively. The air spring (52) is fixedly connected to the outer wall of the main pipe (2) and is located at the end of the reset stroke of the sliding frame (31).

7. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 1, characterized in that: The cleaning component (7) includes a drain pipe (71), an adjustment sleeve (77), and an adjustment rod (75); The drain pipe (71) is fixedly connected to the left end of the main pipe (2), and the outer wall of the drain pipe (71) is provided with two sets of drain ports (72) from top to bottom. The second adjusting sleeve (77) is rotatably connected to the inner wall of the drain pipe (71), and the outer wall of the second adjusting sleeve (77) is provided with a through hole (76). The adjusting rod (75) passes through and is slidably connected to the outer wall of the drain pipe (71), and one end of the adjusting rod (75) is fixedly connected to the adjusting sleeve (77); By rotating the adjusting rod (75), the adjusting sleeve (77) can be rotated, so that the connecting hole (76) alternately connects with the two sets of drain ports (72).

8. The pulse flushing and cleaning device for landscape bridge steel structures according to claim 7, characterized in that: The cleaning component (7) also includes a cleaning port (73), an adjustment sleeve (74), a sealing block (78) and a sealing block (79). The cleaning port (73) is installed at the right end of the main pipe (2), and the adjusting sleeve (74) is rotatably connected to the inner wall of the cleaning port (73); The end of the adjusting rod (75) away from the second adjusting sleeve (77) passes through the outer wall of the cleaning port (73) and is fixedly connected to the first adjusting sleeve (74); The left end of the adjusting sleeve (74) is fixedly connected to the sealing block (78), and the inner wall of the cleaning port (73) is fixedly connected to the sealing block (79). The sealing block (78) and the sealing block (79) are both semi-circular plate structures, and the two can cooperate to form a complete circular plate to block the inner cavity of the cleaning port (73).

9. A pulse flushing and cleaning device for steel structures of landscape bridges according to claim 7, characterized in that: The cleaning assembly (7) also includes a support ring (710), a connecting rod (711), and a locking screw (713). The support ring (710) is rotatably connected to the outer wall of the main pipe (2); The two ends of the connecting rod (711) are respectively fixedly connected to the support ring (710) and the adjusting rod (75). The outer wall of the support ring (710) is fixedly connected to a threaded sleeve (712), and the locking screw (713) passes through and is threadedly connected to the inner wall of the threaded sleeve (712) and can abut against the outer wall of the main pipe (2).

10. A pulse flushing and cleaning device for steel structures of landscape bridges according to claim 7, characterized in that: It also includes flushing pipes, metal universal joints, and flushing heads; One end of the flushing pipe is used to connect to an external water supply device, and the other end is connected to the liquid inlet pipe (6). One end of the metal universal tube is connected to a set of drain ports (72) above the cleaning assembly (7), and the other end is connected to the flushing head.

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