Anti-inversion riverway flood discharge and diversion device

Abstract

The application relates to the technical field of river flood discharge, and discloses a river flood discharge and diversion device capable of preventing backflow, which comprises a flood discharge mounting piece, a siphon drainage piece is mounted on the flood discharge mounting piece, a water diversion stop portion is mounted at the bottom of the siphon drainage piece, the water diversion stop portion is used for preventing the backflow of water in the siphon drainage piece, a water level detection portion is mounted on the flood discharge mounting piece, and the water level detection portion is used for detecting the water level of the river; the siphon drainage piece is adopted, siphon drainage work can be realized, the drainage efficiency is guaranteed, the siphon pipe does not need to be groove-buried in the river for construction work, and suction is directly carried out by using the siphon effect, so that the river embankment is not damaged, and the problems that the current river flood discharge and diversion device mostly adopts fixed-point pipe burying and is inconvenient for realizing siphon drainage and has high construction difficulty can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of river flood discharge, and in particular to a river flood discharge and diversion device for preventing backflow. Background Art

[0002] In flood prevention and discharge work, a large number of rivers need to be discharged and diverted. Usually, there are residents' houses and fertile fields on both sides of the river. When extreme weather occurs or when the river construction encounters the rainy season, the river water level often exceeds the normal water level line, causing the river water to flow back and leak, endangering the lives and property of villagers. In the current river discharge work, buried pipe diversion is usually used to discharge the excessive water level; the current river discharge and diversion devices mostly use fixed-point buried pipes, which have poor flexibility, are not convenient for siphon drainage, and are difficult to construct. They need to be excavated along the river bank. In the existing constructed river, once the water level in the river is above the warning position, it is not convenient to dig trenches and bury pipes below the water level warning line. Construction needs to be carried out after the upstream river is cut off. At the same time, the discharged water pressure is low, and drainage depends on the natural rise and overflow of the water level, which is inefficient and floating objects in the river can easily clog the discharge pipes.

[0003] To this end, we propose a flood discharge and diversion device to prevent backflow in rivers. Summary of the Invention

[0004] The purpose of the present invention is to provide a river flood discharge and diversion device for preventing backflow, so as to solve the problem that current river flood discharge and diversion devices mostly use fixed-point buried pipes, which are not convenient for siphon drainage and have high construction difficulty.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a flood discharge and diversion device for preventing backflow in a river channel, comprising a flood discharge mounting member, a siphon drainage member mounted on the flood discharge mounting member, a water diversion stopper mounted at the bottom of the siphon drainage member, the water diversion stopper being used to prevent water in the siphon drainage member from flowing back;

[0006] The flood discharge installation piece is equipped with a water level detection unit, which is used to detect the water level of the river;

[0007] An isolation device is installed at the bottom of the siphon drainage component to isolate impurities in the river;

[0008] The isolation device is plugged with a flood discharge control unit, which is installed on the siphon drainage component;

[0009] A cleaning device is installed on the flood discharge installation piece, and the cleaning device is used to brush the isolation device;

[0010] The flood discharge installation parts include an I-beam frame and a siphon pipe. The siphon pipe is fixedly installed on the I-beam frame. The siphon pipe is formed by bending a steel pipe and is used to siphon river water. Four through holes are opened on the I-beam frame. The four through holes opened on the I-beam frame are used to pass anchor bolts to install the I-beam frame on the river. A flange is installed on the siphon pipe.

[0011] Preferably, the flood discharge installation also includes a water supply pipe, a drainage solenoid valve, a water supply cock and a sliding cylinder. The water supply pipe is fixedly installed on the siphon pipe, the inner side of the water supply pipe is provided with a thread, the drainage solenoid valve is fixedly installed on the siphon pipe, water is accumulated inside the siphon pipe, the water supply cock is threadedly connected to the water supply pipe, a handwheel is installed on the water supply cock, the sliding cylinder is fixedly installed on the side of the installation I-beam frame, and a hexagonal hole is opened in the sliding cylinder.

[0012] Preferably, the siphon drainage component includes a siphon mounting pipe and an isolation frame. The siphon mounting pipe is fixedly mounted on the bottom of the siphon pipe. The isolation frame is fixedly mounted inside the siphon mounting pipe. Four through holes are opened on the isolation frame.

[0013] Preferably, the water diversion stop portion includes a water stop ring and a water stop ball. The water stop ring is fixedly installed inside the siphon mounting tube, the water stop ball is located inside the siphon mounting tube, and the water stop ball is located above the water stop ring. The water stop ball is used to prevent water in the siphon mounting tube from flowing back.

[0014] Preferably, the water level detection part includes a detection mounting frame, an adjusting bolt and a sliding mounting cylinder. The detection mounting frame is an L-shaped structure. The detection mounting frame is fixedly mounted on the I-beam frame by bolts. The detection mounting frame is threadedly connected with an adjusting bolt. A handwheel is installed on the top of the adjusting bolt, and a sliding mounting cylinder is fixedly installed on the bottom of the adjusting bolt.

[0015] Preferably, the water level detection part also includes a micro switch, a pressing column and a spring. The micro switch is fixedly mounted on the bottom of the sliding mounting tube. The end of the micro switch is fitted with a pressing column. The pressing column is slidably mounted on the sliding mounting tube. A spring is fixedly mounted on the pressing column. The end of the spring is connected to the inside of the sliding mounting tube. The micro switch is used to touch the flood discharge control part.

[0016] Preferably, the isolation device includes a drainage shell, a positioning pin and a filter screen. The drainage shell is fixedly installed at the bottom of the siphon mounting pipe. The drainage shell is connected to the siphon mounting pipe. A positioning pin is fixedly installed at the bottom of the drainage shell. The bottom of the positioning pin is a conical structure. One side of the drainage shell is an open structure. A filter screen is fixedly installed on the drainage shell. The filter screen is a herringbone structure. The filter screen is located on one side of the opening of the drainage shell. The positioning pin is used to insert into the riverbed.

[0017] Preferably, the flood discharge control part includes a lifting sliding ring, a lifting water stop plate and a floating plate. The lifting sliding ring is slidably sleeved on the siphon mounting pipe. The lifting sliding ring is fixedly mounted with a lifting water stop plate. The lifting water stop plate is slidably inserted into the inner side of the opening of the drainage shell. Two floating plates are fixedly mounted on the lifting sliding ring. Two through grooves are provided on the mounting I-beam frame at positions vertically aligned with the two floating plates. The micro switch is located above the floating plate on the same side. The lifting water stop plate is used to control the opening size of the drainage shell.

[0018] Preferably, the cleaning device includes a cleaning electric push rod and a sliding column, the cleaning electric push rod is fixedly installed on the sliding cylinder, the sliding column is slidably installed on the sliding cylinder, the end cross-section of the sliding column is a hexagonal structure, the output shaft of the cleaning electric push rod is fixedly connected to one end of the sliding column, and the micro switch is electrically connected to the cleaning electric push rod and the drain solenoid valve.

[0019] Preferably, the cleaning device further comprises a cleaning brush, which is fixedly mounted at the bottom of the sliding column. The cleaning brush has a herringbone structure, and bristles are mounted on the inner side of the cleaning brush, and the bristles on the inner side of the cleaning brush are attached to the filter screen.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention adopts siphon drainage parts to realize siphon drainage and ensure drainage efficiency. There is no need to dig grooves and bury them in the river channel. The siphon effect is directly used for suction, which will not damage the river bank. The structure is safe and reliable, with low construction difficulty and rapid drainage.

[0022] 2. The present invention adopts a water level detection part, which uses a squeezing and touching method to quickly respond to water discharge and improve the accuracy of flood discharge. At the same time, the water level detection part can adjust the height of the flood discharge and freely control it according to needs, avoiding the problem that the height of the traditional flood discharge pipe cannot be adjusted after installation and has poor flexibility.

[0023] 3. The present invention utilizes an isolation device immersed in the river channel to drain water quickly. The drainage water pressure is greater than the water pressure of the traditional drainage pipe overflow drainage method, which improves the drainage efficiency. The filter screen is used for isolation during drainage. The filter screen has a herringbone structure. Impurities are not easily attached to the filter screen under the action of water flow. At the same time, the cleaning device automatically controls the cleaning work, and the cleaning is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0025] Figure 2 This is a schematic diagram of the installation structure for installing the lower part of the I-beam frame in the present invention;

[0026] Figure 3 This is a cross-sectional view of the I-beam frame installed in the river channel according to the present invention;

[0027] Figure 4 Schematic diagram of the structure of the flood discharge installation member of the present invention;

[0028] Figure 5 It is a structural diagram of the siphon drainage component in the present invention;

[0029] Figure 6 for Figure 3 A magnified view of the structure of the local C in the middle;

[0030] Figure 7 for Figure 1 A magnified view of the structure of the local D in the middle;

[0031] Figure 8 Schematic diagram of the structure of the isolation device in the present invention;

[0032] Figure 9 It is a structural diagram of the flood discharge control unit in the present invention;

[0033] Figure 10 It is a structural schematic diagram of the cleaning device of the present invention;

[0034] Figure 11 It is a structural cross-sectional view of the isolation device in the present invention.

[0035] In the figure: 1. Flood discharge mounting parts; 101. I-beam mounting frame; 102. Siphon pipe; 1021. Water supply pipe; 103. Drain solenoid valve; 104. Water supply cock; 105. Sliding cylinder; 2. Siphon drainage parts; 201. Siphon mounting pipe; 202. Isolation frame; 3. Water diversion stopper; 301. Water stop ring; 302. Water stop ball; 4. Water level detection part; 401. Detection mounting frame; 402. Adjusting bolt; 4021. Sliding mounting cylinder; 403. Micro switch; 404. Pressing column; 405. Spring; 5. Isolation device; 501. Drain shell; 502. Positioning pin; 503. Filter; 6. Flood discharge control part; 601. Lifting sliding ring; 602. Lifting water stop plate; 603. Floating plate; 7. Cleaning device; 701. Cleaning electric push rod; 702. Sliding column; 703. Cleaning brush. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figures 1-11As shown, the present invention provides a technical solution: a flood discharge diversion device for preventing backflow in a river channel, comprising a flood discharge installation part 1, a siphon drainage part 2 is installed on the flood discharge installation part 1, a water diversion stopper 3 is installed at the bottom of the siphon drainage part 2, and the water diversion stopper 3 is used to prevent the water in the siphon drainage part 2 from flowing back, a water level detection part 4 is installed on the flood discharge installation part 1, and the water level detection part 4 is used to detect the water level of the river channel, an isolation device 5 is installed at the bottom of the siphon drainage part 2, and the isolation device 5 is used to isolate impurities in the river channel, and a flood discharge control part 6 is plugged into the isolation device 5, and the flood discharge control part 6 is installed on the siphon drainage part 2. A cleaning device 7 is installed on the drainage component 2 and the flood discharge mounting component 1, and the cleaning device 7 is used to brush the isolation device 5; the flood discharge mounting component 1 includes an I-beam frame 101 and a siphon pipe 102, and the siphon pipe 102 is fixedly installed on the I-beam frame 101. The siphon pipe 102 is formed by bending a steel pipe and is used to siphon river water. Four through holes are provided on the I-beam frame 101, and the four through holes provided on the I-beam frame 101 are used to pass anchor bolts to install the I-beam frame 101 on the river channel, and a flange is installed on the siphon pipe 102.

[0038] The flood discharge installation part 1 also includes a water supply pipe 1021, a drainage solenoid valve 103, a water supply cock 104 and a sliding cylinder 105. The water supply pipe 1021 is fixedly installed on the siphon pipe 102. The inner side of the water supply pipe 1021 is provided with a thread. The drainage solenoid valve 103 is fixedly installed on the siphon pipe 102. Water is accumulated inside the siphon pipe 102. The water supply cock 104 is threadedly connected to the water supply pipe 1021. A handwheel is installed on the water supply cock 104. The sliding cylinder 105 is fixedly installed on the installation I-beam frame. 101 side, a hexagonal hole is opened in the sliding cylinder 105; the siphon drainage member 2 includes a siphon mounting pipe 201 and an isolation frame 202, the siphon mounting pipe 201 is fixedly installed at the bottom of the siphon pipe 102, and the isolation frame 202 is fixedly installed inside the siphon mounting pipe 201, and four through holes are opened on the isolation frame 202; the water diversion stop part 3 includes a water stop ring 301 and a water stop ball 302, the water stop ring 301 is fixedly installed inside the siphon mounting pipe 201, and the water stop ball 302 is located at the siphon mounting pipe. Inside 201, the water stop ball 302 is located above the water stop ring 301. The water stop ball 302 is used to prevent the water in the siphon installation pipe 201 from flowing back. The siphon drainage part 2 is used to realize the siphon drainage work and ensure the drainage efficiency. At the same time, the siphon pipe 102 does not need to be buried in the river construction groove, and the siphon effect is directly used for suction, which will not damage the river bank. The water diversion stop part 3 is used to prevent the water in the siphon pipe 102 from flowing back to the river when the drainage is stopped, causing the siphon pipe 102 to be blocked in the next operation. When the siphon drainage cannot be continued during operation, the water diversion stop part 3 is used to ensure the sustainable use of the siphon pipe 102. The siphon pipe 102 is above the embankment, and there is no need to dig the embankment. The end of the siphon pipe 102 can be buried in the field. It can be quickly installed and used during the flood season. The drainage solenoid valve 103 on the siphon pipe 102 can generate a siphon force when it is lower than the water level line. The siphon pipe 102 uses a water stop ball 302 to fit the water stop ring 301 for stop and closure, ensuring that there is always water stored in the siphon pipe 102 and can siphon water.

[0039] The water level detection part 4 includes a detection mounting frame 401, an adjusting bolt 402 and a sliding mounting cylinder 4021. The detection mounting frame 401 is an L-shaped structure. The detection mounting frame 401 is fixedly mounted on the I-beam frame 101 by bolts. The detection mounting frame 401 is threadedly connected with the adjusting bolt 402. A handwheel is installed on the top of the adjusting bolt 402. The sliding mounting cylinder 4021 is fixedly mounted on the bottom of the adjusting bolt 402. The water level detection part 4 also includes a micro switch 403, a pressing column 404 and a spring 405. The micro switch 403 is fixedly mounted on the bottom of the sliding mounting cylinder 4021. The end of the micro switch 403 is attached to the pressing column 404. The pressing column 404 is slidably mounted on the sliding mounting cylinder 4 021, a spring 405 is fixedly installed on the pressing column 404, and the end of the spring 405 is connected to the inside of the sliding mounting cylinder 4021. The micro switch 403 is used to touch the flood discharge control part 6; the water level detection part 4 is adopted, and the squeezing and touching method is used to ensure that the drainage and flood discharge response is rapid and the flood discharge accuracy is improved. At the same time, the water level detection part 4 adjusts the flood discharge water level height and is freely controlled according to demand, avoiding the problem that the height of the traditional flood discharge pipe cannot be adjusted after installation and the flexibility is poor. When the floating plate 603 is driven by the buoyancy of the water level to float and squeezed onto the pressing column 404, the micro switch 403 is squeezed by the pressing column 404 to control the drainage solenoid valve 103 to open the drainage, and the drainage work is performed under the action of the siphon water pressure.

[0040] The isolation device 5 includes a drainage shell 501, a positioning pin 502 and a filter screen 503. The drainage shell 501 is fixedly installed at the bottom of the siphon mounting pipe 201. The drainage shell 501 is connected to the siphon mounting pipe 201. A positioning pin 502 is fixedly installed at the bottom of the drainage shell 501. The bottom of the positioning pin 502 is a conical structure. The drainage shell 501 is an open structure. A filter screen 503 is fixedly installed on the drainage shell 501. The filter screen 503 is a herringbone structure. The filter screen 503 is a herringbone structure. The filter screen 503 is located on one side of the opening of the drainage shell 501. The positioning pin 502 is used to insert into the riverbed; the flood discharge control part 6 includes a lifting sliding ring 601, a lifting water stop plate 602 and a floating plate 603. The lifting sliding ring 601 is slidably sleeved on the siphon mounting pipe 201. The lifting sliding ring 601 is fixedly installed with a lifting water stop plate 602. The lifting water stop plate 602 is slidably plugged On the inner side of the opening of the drainage shell 501, two floating plates 603 are fixedly installed on the lifting sliding ring 601, and two through grooves are provided on the I-beam frame 101 at the positions vertically aligned with the two floating plates 603. The micro switch 403 is located above the floating plate 603 on the same side, and the lifting water stop plate 602 is used to control the size of the opening of the drainage shell 501; the flood discharge control part 6 rises and falls according to the water level, and touches the pressing column 404 when the water level is too high; this structure uses the isolation device 5 to be immersed in the river channel, which drains water quickly, and the drainage water pressure is greater than the water pressure of the traditional drainage pipe overflow drainage method. The filter screen 503 is isolated during drainage, and the filter screen 503 is a herringbone structure. Impurities are not easily attached to the filter screen 503 under the action of water flow. The lifting water stop plate 602 limits the lifting sliding ring 601 to control the lifting and lowering movement of the floating plate 603.

[0041] The cleaning device 7 includes a cleaning electric push rod 701 and a sliding column 702. The cleaning electric push rod 701 is fixedly mounted on the sliding cylinder 105, and the sliding column 702 is slidably mounted on the sliding cylinder 105. The end cross-section of the sliding column 702 is a hexagonal structure. The output shaft of the cleaning electric push rod 701 is fixedly connected to one end of the sliding column 702, and the microswitch 403 is electrically connected to the cleaning electric push rod 701 and the drain solenoid valve 103; the cleaning device 7 also includes a cleaning brush 703, which is fixedly mounted at the bottom of the sliding column 702. The cleaning brush 703 is a herringbone structure, and bristles are installed on the inside of the cleaning brush 703. The bristles on the inside of the cleaning brush 703 are attached to the filter 503; the cleaning device 7 can automatically control the cleaning work, and ensure that the surface of the filter 503 is clean when draining and discharging floods to avoid blockage. At the same time, the cleaning device 7 is automatically controlled, and cleaning is more efficient. The cleaning process of the cleaning brush 703 on the filter 503 will not affect the normal drainage work.

[0042] The working principle of this embodiment is as follows:

[0043] Install the I-beam frame 101 on the river channel by passing the anchor bolts through the four through holes on the I-beam frame 101. Insert the positioning pin 502 into the bottom of the river channel. Adjust the height of the micro switch 403 by rotating the adjusting bolt 402. Place the siphon pipe 102 directly on the embankment. There is no need to dig a water pipe groove on the embankment. The siphon pipe 102 can be buried in the field outside the river channel. The drainage solenoid valve 103 on the siphon pipe 102 is lower than the water level to generate siphon force. When using it for the first time, open the water filling cock 104 and add water to the water pipe 1021. Add water, then tighten the water filling cock 104, connect the flange on the siphon tube 102 to the external water pump for suction, and then the siphon tube 102 can drain water, realize the water diversion work, and complete the first debugging work. No water pump is needed in the future, and the drainage solenoid valve 103 is used to control the siphon tube 102. When the water flows back, the water stop ball 302 inside the siphon tube 102 is stopped and closed with the water stop ring 301 to ensure that there is always water in the siphon tube 102. Water can be siphoned in later, and the isolation frame 202 is used to limit the water stop ball 302.

[0044] When the water level exceeds the standard, the floating plate 603 is driven up by the buoyancy of the water level and squeezed onto the pressing column 404. The pressing column 404 squeezes the micro switch 403, controls the drainage solenoid valve 103 to open the drainage, and under the action of the siphon water pressure, the drainage is carried out through the siphon tube 102. The lifting water stop plate 602 rises, so that the distance between the lifting water stop plate 602 and the drainage shell 501 increases, which does not affect the drainage work; when the micro switch 403 is squeezed through the passage, the cleaning electric push rod 701 is controlled to push the sliding column 702 downward, driving the cleaning brush 703 to clean the filter screen 503; when the water level returns to the standard water level, the floating plate 603 falls, and cooperates with the spring 405 to squeeze the pressing column 404 so that it no longer squeezes the micro switch 403, and the drainage solenoid valve 103 is closed. When the accumulated water in the siphon tube 102 flows back through the water stop ball 302, the reflux water pressure and the dead weight fit the water stop ring 301 to stop and seal it, making it convenient for the siphon tube 102 to be used next time.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flood discharge and diversion device for preventing backflow in a river channel, comprising a flood discharge installation member (1), a siphon drainage member (2) being installed on the flood discharge installation member (1), and characterized in that: A water diversion stopper (3) is installed at the bottom of the siphon drainage member (2), and the water diversion stopper (3) is used to prevent water in the siphon drainage member (2) from flowing back. A water level detection unit (4) is installed on the flood discharge installation component (1), and the water level detection unit (4) is used to detect the water level of the river; An isolation device (5) is installed at the bottom of the siphon drainage member (2), and the isolation device (5) is used to isolate impurities in the river channel; A flood discharge control unit (6) is plugged into the isolation device (5), and the flood discharge control unit (6) is installed on the siphon drainage component (2); A cleaning device (7) is installed on the flood discharge installation member (1), and the cleaning device (7) is used to brush the isolation device (5); The flood discharge installation component (1) includes an installation I-beam frame (101), a siphon pipe (102) and a drainage solenoid valve (103). The installation I-beam frame (101) is fixedly mounted with a siphon pipe (102). The siphon pipe (102) is formed by bending a steel pipe. The siphon pipe (102) is used to siphon river water. The installation I-beam frame (101) is provided with four through holes. The four through holes provided on the installation I-beam frame (101) are used to pass anchor bolts to install the installation I-beam frame (101) on the river. The siphon pipe (102) is provided with a flange. The water level detection part (4) comprises a detection mounting frame (401), an adjusting bolt (402) and a sliding mounting cylinder (4021); the detection mounting frame (401) is an L-shaped structure; the detection mounting frame (401) is fixedly mounted on the mounting I-beam frame (101) by means of bolts; the detection mounting frame (401) is threadedly connected with the adjusting bolt (402); a hand wheel is mounted on the top of the adjusting bolt (402); and a sliding mounting cylinder (4021) is fixedly mounted on the bottom of the adjusting bolt (402); The water level detection part (4) further comprises a micro switch (403), a pressing column (404) and a spring (405); the micro switch (403) is fixedly mounted on the bottom of the sliding mounting tube (4021); the end of the micro switch (403) is fitted with the pressing column (404); the pressing column (404) is slidably mounted on the sliding mounting tube (4021); the spring (405) is fixedly mounted on the pressing column (404); the end of the spring (405) is connected to the inside of the sliding mounting tube (4021); the micro switch (403) is used to touch the flood discharge control part (6); The isolation device (5) comprises a drainage shell (501), a positioning pin (502) and a filter screen (503). The drainage shell (501) is fixedly mounted on the bottom of the siphon installation pipe (201). The drainage shell (501) is connected to the siphon installation pipe (201). The positioning pin (502) is fixedly mounted on the bottom of the drainage shell (501). The bottom of the positioning pin (502) is a conical structure. One side of the drainage shell (501) is an open structure. The filter screen (503) is fixedly mounted on the drainage shell (501). The filter screen (503) is a herringbone structure. The filter screen (503) is located on one side of the opening of the drainage shell (501). The positioning pin (502) is used to be inserted into the riverbed. The flood discharge control part (6) includes a lifting sliding ring (601), a lifting water stop plate (602) and a floating plate (603). The lifting sliding ring (601) is slidably sleeved on the siphon installation pipe (201). The lifting water stop plate (602) is fixedly installed on the lifting sliding ring (601). The lifting water stop plate (602) is slidably plugged into the inner side of the opening of the drainage shell (501). Two floating plates (603) are fixedly installed on the lifting sliding ring (601). Two through grooves are provided on the installation I-beam frame (101) at positions vertically aligned with the two floating plates (603). The micro switch (403) is located above the floating plate (603) on the same side. The lifting water stop plate (602) is used to control the opening size of the drainage shell (501).

2. The flood discharge and diversion device for preventing backflow in a river according to claim 1, characterized in that: The flood discharge installation component (1) further comprises a water supply pipe (1021), a water supply cock (104) and a sliding cylinder (105). The water supply pipe (1021) is fixedly mounted on the siphon pipe (102), the inner side of the water supply pipe (1021) is provided with a thread, the drainage solenoid valve (103) is fixedly mounted on the siphon pipe (102), water is accumulated inside the siphon pipe (102), the water supply cock (104) is threadedly connected to the water supply pipe (1021), a hand wheel is mounted on the water supply cock (104), the sliding cylinder (105) is fixedly mounted on the side of the mounting I-beam frame (101), and a hexagonal hole is opened in the sliding cylinder (105).

3. The flood discharge and diversion device for preventing backflow in a river according to claim 1, characterized in that: The siphon drainage member (2) comprises a siphon mounting pipe (201) and an isolation frame (202). The siphon mounting pipe (201) is fixedly mounted on the bottom of the siphon pipe (102). The isolation frame (202) is fixedly mounted inside the siphon mounting pipe (201). Four through holes are formed on the isolation frame (202).

4. The flood discharge and diversion device for preventing backflow in a river according to claim 3, characterized in that: The water diversion stop portion (3) comprises a water stop ring (301) and a water stop ball (302). The water stop ring (301) is fixedly mounted inside the siphon mounting tube (201). The water stop ball (302) is located inside the siphon mounting tube (201). The water stop ball (302) is located above the water stop ring (301). The water stop ball (302) is used to prevent water in the siphon mounting tube (201) from flowing back.

5. The flood discharge and diversion device for preventing backflow in a river according to claim 1, characterized in that: The cleaning device (7) comprises a cleaning electric push rod (701) and a sliding column (702), wherein the cleaning electric push rod (701) is fixedly mounted on the sliding cylinder (105), and the sliding column (702) is slidably mounted on the sliding cylinder (105), and the end cross section of the sliding column (702) is a hexagonal structure. The output shaft of the cleaning electric push rod (701) is fixedly connected to one end of the sliding column (702), and the micro switch (403) is electrically connected to the cleaning electric push rod (701) and the drainage solenoid valve (103).

6. The flood discharge and diversion device for preventing backflow in a river according to claim 5, characterized in that: The cleaning device (7) further comprises a cleaning brush (703), which is fixedly mounted on the bottom of the sliding column (702), and has a herringbone structure. Bristles are mounted on the inner side of the cleaning brush (703), and the bristles on the inner side of the cleaning brush (703) are attached to the filter screen (503).

Images