Self-flushing desilting system for drainage pipeline

Abstract

The invention discloses a drainage pipeline self-flushing desilting system which comprises a pool body, a self-flushing structure and a drainage pipe, a flushing pool is arranged in the pool body, the self-flushing structure comprises a sliding rail, a floating body and a traction rope, the sliding rail is vertically arranged in the flushing pool, the sliding rail is sleeved with the floating body in an up-down sliding mode, and the bottom of the side edge of the flushing pool is communicated with the drainage pipe. A cover plate is hinged to the end, located in the flushing pool, of the drainage pipe, a traction rope is connected between the cover plate and the floating body, and the floating body is used for driving the cover plate to rotate around the hinged position to be opened when moving upwards along the sliding rail. Through the arrangement of the self-flushing structure, the change of the liquid level in the flushing tank can be sensed by utilizing the buoyancy of the floating body, the self-flushing structure is connected to the cover plate at the inlet end of the drainage pipe through the traction rope, the movement of the floating body is guided through the sliding rail, and the accurate and controllable movement direction and position of the floating body are ensured; the opening and closing degree of the cover plate can be adaptively controlled, and the continuity and stability of drainage are improved.

Description

Technical Field

[0001] The invention relates to the technical field of urban drainage engineering, and in particular to a drainage pipe self-flushing and desilting system. Background Art

[0002] During the operation of urban drainage systems, the accumulation of solid pollutants such as fallen leaves, sludge, and sand often leads to reduced drainage capacity or even blockage. Traditional drainage systems rely on manual drainage and dredging, which is inefficient and costly. Although there are drainage systems or equipment with self-flushing functions in the prior art, they are usually complex in structure, with high energy consumption, high equipment requirements, and high operating costs. In addition, it is not convenient to automatically control the opening and closing size of the drainage pipe according to the existing water volume, which makes it difficult to ensure the continuity and stability of water discharge.

[0003] Therefore, there is an urgent need for a self-flushing and desilting system for drainage pipes to solve the problem that the existing drainage system is not convenient for automatically controlling the opening and closing size of the drainage pipes according to the existing water volume. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a self-flushing and desilting system for a drainage pipe, so as to solve the problem that the existing drainage system is not convenient for automatically controlling the opening and closing size of the drainage pipe according to the existing water volume.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-flushing and desilting system for drainage pipes comprises a pool body, a self-flushing structure and a drainage pipe, wherein a flushing pool is arranged within the pool body, and the self-flushing structure comprises a slide rail, a float and a traction rope, wherein the slide rail is vertically arranged in the flushing pool, and a float is slidably mounted on the slide rail, and a drainage pipe is connected to the bottom of the side of the flushing pool, and a cover plate is hingedly connected to the end of the drainage pipe located in the flushing pool, and a traction rope is connected between the cover plate and the float, and the float is used to drive the cover plate to rotate and open around the hinge when moving up along the slide rail.

[0007] To optimize the above technical solutions, the specific measures taken also include:

[0008] Furthermore, the self-flushing structure also includes an upper limit stopper, and the upper limit stopper is provided on the top of the slide rail above the float.

[0009] Further, the self-flushing structure further includes a lower limiter, a spring and an arc plate. The lower limiter is coaxially arranged towards the drain pipe, and the slide rail, the lower limiter and the drain pipe are on the same straight line. The slide rail is located between the lower limiter and the drain pipe. One end of the lower limiter away from the drain pipe is connected to the inner wall of the flushing pool through a spring. An arc plate is fixed on the lower limiter. The arc plate is used to move towards the drain pipe along with the water flow and abut against the slide rail, or move away from the slide rail along with the contraction of the spring.

[0010] Further, the self-flushing structure further includes a track. The track is arranged at the bottom of the flushing pool. The track is on the same straight line as the slide rail, the lower limiter and the drain pipe. The lower end of the arc plate contacts and is stuck in the track. A hole through which the lower limiter can pass is formed in the slide rail.

[0011] Further, a second pressure sensor is arranged at one end of the bottom of the flushing pool and located at the drain pipe, and a first pressure sensor is arranged at one end of the drain pipe located outside the flushing pool.

[0012] Further, a sedimentation tank is further arranged in the pool body. A vertical partition wall is arranged between the sedimentation tank and the flushing pool, and filter holes communicating the sedimentation tank and the flushing pool are arranged at the bottom of the partition wall.

[0013] Further, a liquid level sensor for monitoring the water level is arranged inside the sedimentation tank, and the liquid level sensor is electrically connected to a remote control terminal.

[0014] Further, a water quality sensor for monitoring the water quality is arranged at the bottom inside the sedimentation tank, and the water quality sensor is electrically connected to a remote control terminal.

[0015] Further, an early warning module is arranged in the remote control terminal.

[0016] The beneficial effects of the present invention are as follows:

[0017] Through the setting of the self-flushing structure, during use, the present invention can utilize the buoyancy of the floating body to sense the change of the liquid level in the flushing pool, and connect to the cover plate at the inlet end of the drain pipe through the towing rope. The movement of the floating body is guided by the slide rail to ensure the precise controllability of the movement direction and position of the floating body. During use, the towing rope is pulled by the movement of the floating body to realize the adaptive control of the opening and closing size of the cover plate, solve the problem that the existing drainage system is not convenient to automatically control the opening and closing size of the drainage pipe according to the amount of existing water, and improve the continuity and stability of drainage.

[0018] The present invention combines a self-flushing function with an intelligent monitoring and warning module to achieve automatic dredging and real-time monitoring of drainage pipes, improve drainage efficiency, effectively reduce the entry of pollutants such as sludge and sand particles into the drainage pipes, prevent blockages, and extend the service life of the drainage system; through the linkage of the floating body and the towing rope, automatic dredging of the drainage pipes is achieved, reducing manual intervention. The settings of the floating body and the slide rail, etc., trigger automatic flushing. Its design is simple and easy to install and maintain, the mechanical structure is reliable, reducing the possibility of mechanical failures and lowering the maintenance cost of the system. The liquid level, flow rate, and water quality are monitored in real time through a variety of sensors to ensure the normal operation of the drainage system. Through an intelligent monitoring and warning mechanism, combined with a self-flushing device, automatic dredging and real-time monitoring of the drainage pipes are achieved to ensure the normal operation of the drainage system. The operation and maintenance personnel can also perform real-time monitoring and control of the system through the remote monitoring module, improving management efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic diagram of the overall structure of a self-flushing and dredging system for drainage pipes proposed by the present invention;

[0020] Figure 2 FIG. is a schematic diagram of the structure of the self-flushing structure of a self-flushing and dredging system for drainage pipes proposed by the present invention;

[0021] Figure 3 FIG. is a monitoring flow chart of a self-flushing and dredging system for drainage pipes proposed by the present invention.

[0022] Reference numerals: pool body 1, flushing pool 2, sedimentation pool 3, partition wall 4, filter hole 5, self-flushing structure 6, cover plate 7, drain pipe 8, first pressure sensor 9, second pressure sensor 10, liquid level sensor 11, water quality sensor 12, remote control terminal 13, floating body 61, towing rope 62, slide rail 63, upper limit stopper 64, lower limit stopper 65, spring 66, arc plate 67, track 68. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Now, the present invention will be further described in detail with reference to the accompanying drawings.

[0024] As shown in the attached Figure 1 figures, a self-flushing and dredging system for drainage pipes according to an embodiment of the present invention includes a pool body 1, a self-flushing structure 6, and a drain pipe 8. A flushing pool 2 is provided in the pool body 1. The self-flushing structure 6 includes a slide rail 63, a floating body 61, and a towing rope 62. The slide rail 63 is vertically arranged in the flushing pool 2, and a floating body 61 is sleeved on the slide rail 63 so as to be able to slide up and down. The bottom of the side of the flushing pool 2 is communicated with a drain pipe 8 for discharging rainwater. The end of the drain pipe 8 located in the flushing pool 2 is hinged with a cover plate 7. A towing rope 62 is connected between the cover plate 7 and the floating body 61. The floating body 61 is used to drive the cover plate 7 to rotate and open around the hinge when moving upward along the slide rail 63.

[0025] The present invention is provided with a self-flushing structure 6. When in use, it can utilize the buoyancy of the float 61 to sense the change of the liquid level in the flushing pool 2, and is connected to the cover 7 at the inlet end of the drain pipe 8 through a traction rope 62. The movement of the float 61 is guided by the slide rail 63 to ensure that the movement direction and position of the float 61 are accurately controllable. When in use, the traction rope 62 is pulled by the movement of the float 61 to achieve adaptive control of the opening and closing size of the cover 7, which solves the problem that the existing drainage system is not convenient for automatically controlling the opening and closing size of the drainage pipe according to the existing water volume, thereby improving the continuity and stability of drainage.

[0026] As attached Figure 2 As shown, in a specific embodiment based on the above, the self-flushing structure 6 also includes an upper limiter 64, and the upper limiter 64 is provided at the top of the slide rail 63 above the float 61. In this way, when in use, the highest floating position of the float 61 can be limited to prevent the float 61 from moving up to the point of being separated from the slide rail 63, such as when a large amount of water flows in a short period of time.

[0027] In another specific embodiment based on the above, the self-flushing structure 6 also includes a lower limiter 65, a spring 66 and an arc plate 67. The lower limiter 65 is coaxially arranged toward the drain pipe 8, and the slide rail 63, the lower limiter 65 and the drain pipe 8 are in the same straight line. The slide rail 63 is located between the lower limiter 65 and the drain pipe 8. The end of the lower limiter 65 away from the drain pipe 8 is connected to the inner wall of the flushing pool 2 through a spring 66. An arc plate 67 is fixed on the lower limiter 65. The arc plate 67 is used to move toward the drain pipe 8 with the water flow and abut against the slide rail 63, or shrink away from the slide rail 63 with the spring 66.

[0028] The self-flushing structure 6 further comprises a track 68, which is arranged at the bottom of the flushing pool 2. The track 68 is in the same straight line as the slide rail 63, the lower stopper 65 and the drain pipe 8. The lower end of the arc plate 67 is stuck in the track 68. The slide rail 63 is provided with a hole for the lower stopper 65 to pass through. The track 68 is used to eliminate the movement deviation of the lower stopper 65 caused by the water flow. In this solution, due to the limitation of the track 68, the impact force of the water flow on the arc plate 67 other than along the track 68 is offset, ensuring that the movement direction of the lower stopper 65 is controllable.

[0029] During use, when the cover plate 7 is opened, the water is in a flowing state. The arc-shaped plate 67 is subjected to the impact force of the water flow, causing the lower position limiter 65 to move towards the slide rail 63 and pass through the hole. At this time, the lower position limiter 65 or the arc-shaped plate 67 restricts the lowest position of the floating body 61 from descending. Under the action of the lower position limiter 65, the position where the floating body 61 descends keeps the cover plate 7 from closing until the drainage is completed. When the arc-shaped plate 67 is not stressed, the lower position limiter 65 moves towards the partition wall 4 under the action of the spring 66, and the lower position limiter 65 exits the hole. The floating body 61 loses its limiting effect and continues to descend, and the cover plate 7 closes completely.

[0030] In another specific embodiment based on the above, a second pressure sensor 10 is provided at the bottom of the flushing pool 2 and at one end of the drain pipe 8, and a first pressure sensor 9 is provided at the outer end of the drain pipe 8 located outside the flushing pool 2. In this way, the water pressure in the drain pipe 8 can be monitored by the second pressure sensor 10 and the first pressure sensor 9 respectively installed at the inlet end and the outlet end of the drain pipe 8 to determine whether the drain pipe 8 is blocked. The implementation method of the second pressure sensor 10 and the first pressure sensor 9: a pressure transmitter is used and installed at the inlet and outlet of the drain pipe 8. Data output: output pressure data, with the unit of Pascal (Pa).

[0031] In another specific embodiment based on the above, a sedimentation tank 3 is also provided in the pool body 1. A vertical partition wall 4 is provided between the sedimentation tank 3 and the flushing pool 2, and a filter hole 5 communicating the sedimentation tank 3 and the flushing pool 2 is provided at the bottom of the partition wall 4. Among them, one end of the lower position limiter 65 away from the drain pipe 8 in the above solution can be connected to the partition wall 4 through a spring 66.

[0032] Among them, a liquid level sensor 11 for monitoring the liquid level is provided inside the sedimentation tank 3, and the liquid level sensor 11 is electrically connected to the remote control terminal 13 to facilitate real-time monitoring of the liquid level height.

[0033] The implementation method of the liquid level sensor 11: an ultrasonic liquid level sensor or a pressure type liquid level sensor can be used, installed on the side wall or the bottom of the sedimentation tank 3, and the liquid level height is measured by emitting ultrasonic waves or detecting the change of water pressure. Installation position: multiple can be set as needed and installed respectively in the sedimentation tank 3 and the flushing pool 2, near the partition wall 4 and the inlet of the drain pipe 8. Data output: output liquid level height data, with the unit of millimeter.

[0034] Among them, a water quality sensor 12 for monitoring the water quality is provided at the bottom inside the sedimentation tank 3, and the water quality sensor 12 is electrically connected to the remote control terminal 13 to facilitate monitoring of water quality indicators such as pollutant concentration and turbidity.

[0035] Implementation of the water quality sensor 12: An electrochemical sensor or an optical sensor can be used to detect the concentration of pollutants in water. Installation location: Multiple sensors can be installed as needed, and they are respectively installed in the sedimentation tank 3 and the flushing tank 2, near the water inlet and outlet positions. Data output: Output water quality parameters such as pollutant concentration (mg / L), turbidity (NTU), etc.

[0036] Among them, an early warning module is provided in the above-mentioned remote control terminal 13. In the above solution, a data acquisition and transmission module can be installed as needed between the liquid level sensor 11, the water quality sensor 12 and the remote control terminal 13 to collect sensor data and transmit it to the remote control terminal 13 through Internet of Things technology. Among them, the remote control terminal 13 can be equipped with a data analysis and early warning module, which can analyze the received data. When the liquid level, flow rate or water quality index is abnormal, an early warning signal is sent. Among them, the remote control terminal 13 can be equipped with a remote monitoring module, and maintenance personnel can remotely monitor the operation status of the drainage system through a mobile phone or a computer, receive early warning information, and remotely control the system.

[0037] Among them, the specific implementation of the data acquisition and transmission module:

[0038] Function: Collect sensor data and transmit it to the cloud server through wireless or wired communication technology.

[0039] Implementation method: A microcontroller (such as Arduino or STM32) can be used as the data acquisition unit to connect to each sensor and collect real-time data. NB-IoT, LoRa or 4G / 5G wireless communication technology can be used to transmit the data to the cloud server. For a wired environment, Ethernet communication can be used. The collected data is encapsulated in JSON or XML format for easy transmission and parsing.

[0040] The specific implementation of the data analysis and early warning module:

[0041] Function: Analyze the received sensor data, judge whether the operation status of the drainage system is normal, and send an early warning signal in case of abnormality.

[0042] Implementation method: Store the collected data in a cloud database (such as MySQL, MongoDB or cloud database service).

[0043] When the liquid level height exceeds the preset threshold (such as the liquid level in the flushing tank 2 exceeds the inlet height of the drainage pipe 8), it is judged that the liquid level is abnormal. When the pollutant concentration or turbidity exceeds the preset threshold, it is judged that the water quality is abnormal. When the inlet pressure of the drainage pipe 8 is too high or the outlet pressure is too low, it is judged that there is a pipeline blockage or a risk of blockage.

[0044] Early warning signal: When an abnormality is detected, an early warning message is sent to the maintenance personnel by means of SMS, email or APP push.

[0045] Specific implementation of the remote monitoring module:

[0046] Function: The operation and maintenance personnel can remotely monitor the operation status of the drainage system through mobile phones or computers, receive warning messages, and remotely control the system.

[0047] Implementation method: A user interface based on the Web or mobile application can be used to display the real-time data (liquid level, water quality, pressure) of the drainage system. Through the user interface, the operation and maintenance personnel can remotely control the operation status of the drainage system, such as manually opening or closing the inlet cover plate 7 of the drain pipe 8.

[0048] Warning notification: The warning message is displayed in real time in the user interface and is promptly notified to the operation and maintenance personnel by means of SMS, email or APP push.

[0049] The working process of the above module is as follows:

[0050] Data acquisition: The sensors collect the liquid level, water quality and pressure data in real time and transmit them to the cloud through the data acquisition module.

[0051] Data transmission: The data is transmitted to the cloud server through wireless or wired communication technology and stored in the database.

[0052] Data analysis: The cloud server analyzes the received data in real time to judge whether the operation status of the drainage system is normal.

[0053] Warning trigger: When abnormal data is detected, the warning module sends a warning message to the operation and maintenance personnel by means of SMS, email or APP push.

[0054] Remote monitoring: The operation and maintenance personnel remotely monitor the operation status of the drainage system through mobile phones or computers, receive warning messages, and perform remote control as needed.

[0055] A specific implementation manner of the present invention is as follows:

[0056] Normal drainage stage: The rainwater enters the sedimentation tank 3 after passing through structures such as the first pool plate, and after sedimentation, it enters the flushing tank 2 through the filter holes 5. At this time, the towing rope 62 is in a relaxed state, and the cover plate 7 closes the inlet of the drain pipe 8.

[0057] Self-flushing stage: When the liquid level rises, the buoyancy acting on the floating body 61 increases, and it moves upward along the slide rail 63. The floating body 61 pulls the cover plate 7 through the towing rope 62, causing it to flip upward and open the inlet of the drain pipe 8. At this time, the potential energy of the water flow is used to flush the sludge and debris in the drain pipe 8. Moreover, the lower limit limiter 65 moves along the track 68 towards the slide rail 63 under the impact of the water flow, performing the limiting function. When the liquid level drops, the floating body 61 moves downward along the slide rail 63. Under the action of the lower limit limiter 65, the floating body 61 stops moving downward, maintaining the traction on the cover plate 7. After the water is discharged, the lower limit limiter 65 retracts along the track 68 under the action of the spring 66, losing the limiting function. The floating body 61 continues to move downward, and the towing rope 62 loses the traction of the floating body 61. The cover plate 7 gradually closes the inlet of the drain pipe 8 under its own gravity.

[0058] As shown in the Figure 3 attachment, in the intelligent monitoring and early warning stage: The liquid level sensor 11, water quality sensor 12, and pressure sensor 10 continuously monitor the data of the pool body 1. The data acquisition and transmission module transmits the data to the remote control terminal 13. The data analysis and early warning module of the remote control terminal 13 analyzes the received data. Under normal conditions, it maintains monitoring. When abnormalities are detected, it issues an early warning signal, and the operation and maintenance personnel can handle the alarm in a timely manner through the remote monitoring module.

[0059] Specifically:

[0060] Liquid level rising stage: When the liquid level in the flushing pool 2 rises, the buoyancy acting on the floating body 61 increases, and it moves upward along the slide rail 63. The floating body 61 pulls the cover plate 7 through the towing rope, causing it to flip upward and open the inlet of the drain pipe 8.

[0061] Upper limit locking mechanism: An upper limit limiter 64 is set at the top of the slide rail 63. When the floating body 61 reaches the top, the upper limit limiter 64 restricts it from moving upward further, maintaining the open state of the cover plate 7.

[0062] Lower limit locking mechanism: The lower limit limiter 65 is connected to a spring 66 installed on the partition wall 4, and an arc-shaped plate 67 is installed on the lower limit limiter 65. When there is no water drainage, the lower limit limiter 65 does not cross the slide rail 63 and has no limiting function. During water drainage, the arc-shaped plate 67 is subjected to the impact force of the water, offsetting the pulling force of the spring 66, driving the lower limit limiter 65 to move along the track 68 towards the slide rail 63, having the limiting function. When the water drainage ends and the impact force of the water disappears, the spring 66 retracts, driving the limiter 65 to move towards the partition wall 4, losing the lower limit function.

[0063] Liquid level dropping stage: When the liquid level in the flushing tank 2 drops, the buoyancy force on the floating body 61 decreases, and it moves downward along the slide rail 63. Due to the obstruction of the lower limit 65, the floating body 61 cannot continue to move downward, maintaining the traction on the cover plate 7, so that the cover plate 7 cannot be closed, ensuring the drainage of accumulated water. When the drainage is completed, the lower limiter 65 loses its limiting effect, the floating body 61 continues to move downward, and the towing rope 62 becomes slack as the floating body 61 descends. The cover plate 7 closes the inlet of the drain pipe 8 under its own gravity.

[0064] Among them, the above-mentioned floating body 61 can be designed as a cylindrical or spherical shape to ensure its stable floating in water. Materials with a density less than that of water, such as polyethylene or polypropylene, can be selected to manufacture the floating body 61 to provide sufficient buoyancy. The above-mentioned slide rail 63 can be designed to be vertical or inclined, and multiple positioning points can also be set as needed to control the movement position of the floating body 61.

[0065] Another specific embodiment of the present invention is as follows. A locking device and a release device can be set as needed:

[0066] Locking device: The locking device can be designed as a pawl mechanical lock or an electromagnetic lock, and is installed at the top of the slide rail 63. When the floating body 61 reaches the top, the locking device automatically locks the towing rope 62 to keep the cover plate 7 in the open state.

[0067] Release device: The release device can be designed as a spring or an electromagnetic release mechanism. When the liquid level drops, the release device automatically releases the towing rope 62. The release device can be controlled by the liquid level sensor 11. When the liquid level drops to a preset height, the liquid level sensor 11 sends a signal to trigger the release device.

[0068] Working process

[0069] (1) Initial state

[0070] The floating body 61 is located at the bottom of the slide rail 63, the towing rope 62 is slack, and the cover plate 7 closes the inlet of the drain pipe 8 under its own gravity.

[0071] (2) Liquid level rising stage

[0072] The liquid level sensor 11 monitors the liquid level change in the flushing tank 2 in real time. When the liquid level rises, the buoyancy force on the floating body 61 increases, and it moves upward along the slide rail 63. The floating body 61 pulls the cover plate 7 through the towing rope 62, causing it to flip upward to open the inlet of the drain pipe 8. When the floating body 61 reaches the upper limiter 64, the floating body 61 stops moving and keeps the cover plate 7 in the open state.

[0073] (3) Flushing process

[0074] The rainwater in the flushing pool 2 quickly flows into the drain pipe 8 under the action of gravity, and the potential energy of the water flow is used to flush the sludge and sundries in the drain pipe 8. The liquid level sensor 11 continues to monitor the liquid level change to ensure the smooth progress of the flushing process.

[0075] (4) Liquid level dropping stage

[0076] The liquid level sensor 11 monitors that the liquid level drops. When the liquid level drops to the preset height, the release device automatically releases the towing rope 62. The floating body 61 moves downward along the slide rail 63, the towing rope 62 becomes slack, and loses the traction on the cover plate 7. The cover plate 7 closes the inlet of the drain pipe 8 under its own gravity.

[0077] The present invention combines the self-flushing function with the intelligent monitoring and warning module to realize the automatic dredging and real-time monitoring of the drainage pipeline, improve the drainage efficiency, effectively reduce the entry of pollutants such as sludge and sand particles into the drain pipe, prevent blockage, and extend the service life of the drainage system; through the linkage of the floating body 61 and the towing rope 62, the automatic dredging of the drainage pipeline is realized, reducing manual intervention. The settings of the floating body 61 and the slide rail 63, etc., realize the automatic flushing trigger. Its design is simple and easy to install and maintain, the mechanical structure is reliable, reducing the possibility of mechanical failures, and reducing the maintenance cost of the system. The liquid level, flow rate and water quality are monitored in real time through a variety of sensors to ensure the normal operation of the drainage system. Through the intelligent monitoring and warning mechanism, combined with the self-flushing device, the automatic dredging and real-time monitoring of the drainage pipeline are realized to ensure the normal operation of the drainage system. The operation and maintenance personnel can also perform real-time monitoring and control on the system through the remote monitoring module to improve the management efficiency.

[0078] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "rear", etc. cited in the invention are only for the convenience of clear narration, rather than used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0079] The above is only the preferred implementation mode of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, retouches and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and should be regarded as the protection scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-flushing and dredging system for drainage pipes, characterized in that: It includes a pool body (1), a self-flushing structure (6) and a drain pipe (8). A flushing pool (2) is provided inside the pool body (1). The self-flushing structure (6) includes a slide rail (63), a floating body (61) and a towing rope (62). The slide rail (63) is vertically arranged in the flushing pool (2), and the floating body (61) is sleeved on the slide rail (63) so as to be able to slide up and down. The bottom of the side of the flushing pool (2) is communicated with the drain pipe (8). The end of the drain pipe (8) located inside the flushing pool (2) is hinged with a cover plate (7). A towing rope (62) is connected between the cover plate (7) and the floating body (61). The floating body (61) is used to drive the cover plate (7) to rotate and open around the hinge when moving upward along the slide rail (63).

2. The self-flushing and silt-clearing system for drainage pipelines according to claim 1, wherein: The self-flushing structure (6) further includes an upper limiter (64), and the upper limiter (64) is provided at the top of the slide rail (63) above the floating body (61).

3. A self-flushing and dredging system for drainage pipes according to claim 1, characterized in that: The self-flushing structure (6) further includes a lower limiter (65), a spring (66) and an arc plate (67). The lower limiter (65) is coaxially arranged towards the drain pipe (8), and the slide rail (63), the lower limiter (65) and the drain pipe (8) are on the same straight line. The slide rail (63) is located between the lower limiter (65) and the drain pipe (8). One end of the lower limiter (65) far from the drain pipe (8) is connected to the inner wall of the flushing pool (2) through the spring (66). An arc plate (67) is fixed on the lower limiter (65). The arc plate (67) is used to move towards the drain pipe (8) along with the water flow and abut against the slide rail (63), or move away from the slide rail (63) along with the contraction of the spring (66).

4. The self-flushing and silt-removing system for drainage pipes according to claim 3, characterized in that: The self-flushing structure (6) further includes a track (68). The track (68) is arranged at the bottom of the flushing pool (2). The track (68) is on the same straight line as the slide rail (63), the lower limiter (65) and the drain pipe (8). The lower end of the arc plate (67) is in contact with and stuck in the track (68), and a hole through which the lower limiter (65) can pass is provided on the slide rail (63).

5. The self-flushing and silt-removing system for drainage pipes according to claim 1, characterized in that: A second pressure sensor (10) is provided at one end of the bottom of the flushing pool (2) and located at the drain pipe (8), and a first pressure sensor (9) is provided at one end of the drain pipe (8) located outside the flushing pool (2).

6. The self-flushing and silt-clearing system for drainage pipes according to claim 1, wherein: A sedimentation pool (3) is further provided inside the pool body (1). A vertical partition wall (4) is provided between the sedimentation pool (3) and the flushing pool (2), and a filtering hole (5) communicating the sedimentation pool (3) and the flushing pool (2) is provided at the bottom of the partition wall (4).

7. A self-flushing and dredging system for drainage pipes according to claim 6, characterized in that: A liquid level sensor (11) for monitoring the water level is provided inside the sedimentation pool (3), and the liquid level sensor (11) is electrically connected to a remote control terminal (13).

8. The self-flushing and silt-removing system for drainage pipes according to claim 6, wherein: A water quality sensor (12) for monitoring the water quality is provided at the bottom inside the sedimentation pool (3), and the water quality sensor (12) is electrically connected to a remote control terminal (13).

9. A self-flushing and silt-removing system for drainage pipes according to claim 7 or 8, characterized in that: An early warning module is provided in the remote control terminal (13).

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