River flood control and drainage system

Abstract

The invention belongs to the technical field of water conservancy projects, and provides a river flood control and drainage system which comprises a pump station, a grille decontamination machine, a sand pump, a first auger loosening machine and a crushing assembly. The sand pump and the first auger loosening machine are arranged close to a riverbed, and the sand pump is located between a gate of the pump station and a grating of the grating cleaner; the first auger loosening machine is located on the side, away from the sand pump, of the grille cleaner. The crushing assembly comprises a first wolf tooth roller and a second wolf tooth roller, and rotating shafts of the first wolf tooth roller and the second wolf tooth roller are both perpendicular to the riverbed. According to the river channel flood control and drainage system, stones and large-size sundries mixed in flood can be extruded and crushed into small-size fragments through the crushing assembly, and the small-size fragments are cleaned through the grille cleaner; the first auger loosening machine is used for stirring silt in flood, deposition is avoided, meanwhile, the sand pump is combined for cleaning, and therefore the silt and stone cleaning problem in the flood control and drainage process is solved, and the continuous operation capacity of facilities is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of water conservancy engineering, and specifically, relates to a river flood control and drainage system. Background Art

[0002] Flash torrents caused by increased water volume and rising water levels in rivers, lakes and reservoirs due to heavy rainfall are the main cause of flood disasters in my country. With the frequent occurrence of flood disasters, the construction of flood control and drainage projects has become an important part of water conservancy engineering work.

[0003] In recent years, with the outstanding effect of screen cleaners in sewage treatment, screen cleaners have been introduced in large numbers in the construction of flood control and drainage projects. They can stably intercept and remove solid waste in the water flow under various environments, reducing the need for manual operation. However, after the mountain torrents broke out, the floods continued to wash away the terrain and environment along the way. When the floods flowed to the flood control and drainage facilities, they were often mixed with a large amount of silt, stones and debris. Among them, the deposition of silt will raise the water level and increase the pressure of flood control and drainage; stones and debris will impact the component structures of water conservancy facilities under the impetus of floods, which can easily damage and clog the facilities. However, the screen cannot filter large-volume materials such as stones and silt, and is prone to clogging, which requires shutdown for cleaning, affecting the continuous operation ability of the equipment. Summary of the invention

[0004] The present application proposes a river flood control and drainage system, which aims to solve the problem that mud, sand and stones are difficult to clean during the flood control and drainage process.

[0005] To achieve the above-mentioned purpose, the present application provides a river flood control and drainage system, including a pump station, a screen dirt remover, a sand pump, a first auger loosening machine and a crushing assembly;

[0006] The crushing assembly, the first auger loosening machine, the screen cleaner, the sand pump and the pump station are arranged in sequence along the water flow direction of the river; the sand pump and the first auger loosening machine are both set close to the riverbed, and the sand pump is located between the gate of the pump station and the screen of the screen cleaner; the first auger loosening machine is located on the side of the screen cleaner away from the sand pump;

[0007] The crushing assembly comprises a first wolf-tooth roller and a second wolf-tooth roller, and the rotation axes of the first wolf-tooth roller and the second wolf-tooth roller are both perpendicular to the riverbed.

[0008] In an optional solution, the crushing assembly further includes a roller seat;

[0009] The roller seat is provided with a sliding mechanism fixedly connected to the rotating shaft of the second wolf tooth roller, so that the second wolf tooth roller can slide relatively in the roller seat; the rotating shaft of the first wolf tooth roller is fixedly connected to the roller seat.

[0010] In an optional solution, the first wolf tooth roller rotates clockwise along its rotation axis, and the second wolf tooth roller rotates counterclockwise along its rotation axis, and the rotation axes of the first wolf tooth roller and the second wolf tooth roller both have a one-way rotation limiting mechanism.

[0011] In an optional solution, the crushing assembly further includes at least one auxiliary motor and a pressure sensor;

[0012] The output shaft of the auxiliary motor is fixedly connected to the rotating shaft of the first wolf-tooth roller and / or the rotating shaft of the second wolf-tooth roller; the pressure sensor is electrically connected to the auxiliary motor.

[0013] In an optional solution, the river flood control and drainage system further includes an inverted flow seat, which is arranged adjacent to a side of the crushing assembly away from the pump station, and two inverted flow seats are symmetrically arranged along the river banks on both sides;

[0014] The end surface of the backflow seat facing away from the crushing component is an inclined surface, which is defined as the water-facing surface; the water-facing surface extends from the two river banks away from the crushing component to the center of the river channel near the first wolf tooth roller or the second wolf tooth roller.

[0015] In an optional solution, the backflow seat further includes an impact plate, which is fixedly connected to the water-facing surface via an elastic buffer structure.

[0016] In one alternative, the river flood control and drainage system also includes a comprehensive monitoring component;

[0017] The comprehensive monitoring component comprises a water level monitoring element and a flow velocity sensing element; the water level monitoring element is fixedly connected to the outer end surface of the backflow seat, and the flow velocity sensing element is arranged in the elastic buffer structure.

[0018] In an optional embodiment, the integrated monitoring assembly also includes a biosensor element for monitoring organic biological reactions in the water flowing to the invertor.

[0019] In an optional solution, the river flood control and drainage system also includes a second auger loosening machine, which is arranged near the riverbed and located between the screen cleaner and the pump station.

[0020] In one alternative, the pump station is provided with a control room equipped with a processor;

[0021] The grille dirt remover, the sand pump, the first auger loosener, the auxiliary motor, the pressure sensor, the integrated monitoring component and the second auger loosener are all electrically connected to the processor.

[0022] Beneficial effects of this application:

[0023] The present application forms a river flood control and drainage system by sequentially arranging a crushing component, a first auger loosening machine, a screen cleaner, a sand pump and a pump station in the river channel. Stones and large debris mixed in the flood will be squeezed by the crushing component into small fragments and flow to the screen of the screen cleaner to be cleaned; the silt in the flood is prevented from depositing under the action of the first auger loosening machine, and is carried by the flowing water to the sand pump to be cleaned, thereby solving the problem of cleaning silt and stones in the flood control and drainage process and improving the continuous operation capacity of the facility. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 is a schematic diagram of a river flood control and drainage system in one embodiment of the present application;

[0026] Figure 2 is a front view of a river flood control and drainage system in one embodiment of the present application;

[0027] Figure 3 is a top view of a river flood control and drainage system in one embodiment of the present application;

[0028] Figure 4 yes Figure 2 Sectional view along AA direction;

[0029] Figure 5 It is a schematic diagram of a river flood control and drainage system in one embodiment of the present application (the river channel is hidden);

[0030] Figure 6 is a schematic diagram of a river flood control and drainage system in one embodiment of the present application;

[0031] Figure 7 It is a top view of a river flood control and drainage system in one embodiment of the present application (with a hidden grille dirt remover);

[0032] Figure 8 It is a schematic diagram of a river flood control and drainage system in one embodiment of the present application (with a hidden grille decontamination machine);

[0033] Reference numerals in the figures:

[0034] 1. Pump station; 11. Gate;

[0035] 2. Grille decontamination machine;

[0036] 3. Sand pump;

[0037] 4. The first auger loosening machine;

[0038] 5. Crushing assembly; 51. First wolf tooth roller; 52. Second wolf tooth roller; 53. Roller seat; 54. Auxiliary motor;

[0039] 6. Backflow seat; 61. Impact plate;

[0040] 7. Second auger loosening machine;

[0041] 8. River channel. DETAILED DESCRIPTION

[0042] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, the concept of "roughly" describes the main features of an overall structure or shape. When describing the shape of an object, it means that the object mainly presents a certain shape, but may differ in non-functional details. These detailed differences do not affect the overall characteristics, so they can be classified as "roughly" a certain shape. For example, when describing a round object, the expression "roughly round" means that the overall shape of the object is round, but there are differences in certain non-functional details. Similarly, when describing a cube, the expression "roughly cubic" means that the overall shape of the object is a cube, but there are differences in certain non-functional details.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] In order to solve the problem that mud and stones are difficult to clean during flood control and drainage, the present application provides a river flood control and drainage system, and the specific embodiments are as follows:

[0049] In one embodiment, see Figures 1 to 4 , the present application provides a river flood control and drainage system, including a pump station 1, a screen dirt remover 2, a sand pump 3, a first auger loosening machine 4 and a crushing assembly 5;

[0050] The crushing assembly 5, the first auger loosening machine 4, the screen cleaner 2, the sand pump 3 and the pump station 1 are arranged in sequence along the water flow direction of the river channel 8; the sand pump 3 and the first auger loosening machine 4 are both arranged near the riverbed, and the sand pump 3 is located between the gate 11 of the pump station 1 and the screen of the screen cleaner 2; the first auger loosening machine 4 is located on the side of the screen cleaner 2 away from the sand pump 3;

[0051] The crushing assembly 5 comprises a first wolf-tooth roller 51 and a second wolf-tooth roller 52 , and the rotation axes of the first wolf-tooth roller 51 and the second wolf-tooth roller 52 are both perpendicular to the riverbed.

[0052] Among them, the screen dirt remover 2 is a special water treatment equipment that can continuously and automatically intercept and remove various shapes of debris in the fluid. Its working principle is that a unique rake tooth is assembled into a group of rotating screen chains. Driven by the motor reducer, the rake tooth chain rotates against the direction of the water flow. When the rake tooth chain runs to the upper part of the equipment, due to the guidance of the groove wheel and the curved rail, each group of rake teeth produces a relative self-cleaning movement, and most of the solid matter falls by gravity and is transported and collected by the conveyor belt.

[0053] In this embodiment, the auger loosening machine is mainly composed of a driving motor and a rotating shaft. The rotating shaft is connected to the output shaft of the driving motor and is provided with spiral blades. When the driving motor drives the rotating shaft to rotate, the spiral blades rotate to push the fluid. Under the action of the normal force of the blades and the thrust generated by the acceleration of the fluid, the fluid in the environment around the rotating shaft can be stirred and the solid material can be loosened.

[0054] In this embodiment, the sand pump 3 works based on the centrifugal force. The centrifugal force is generated by the rotation of the impeller to transport liquid or sediment and other materials from the suction end to the discharge end, and the liquid containing solid particles can be effectively processed.

[0055] In this embodiment, blocked by the grille of the grille cleaner 2 and the gate 11 of the pump station 1, the silt in the flood is more likely to settle on the riverbed in front of the grille cleaner 2 and the pump station 1, thereby raising the water level. Therefore, the first auger loosening machine 4 is arranged close to the riverbed, and the surface riverbed soil and water flow are stirred by the rotation of the auger blades to prevent the silt in the flood from settling in front of the grille cleaner 2; and the sand pump 3 is arranged close to the riverbed so that the silt blocked by the gate 11 of the pump station 1 can be cleaned in time before it is deposited and formed on the riverbed.

[0056] In this embodiment, the first wolf tooth roller 51 and the second wolf tooth roller 52 can be driven by a motor, hydraulically driven or manually assisted to perform cyclic mechanical rotation; the roller surfaces of the first wolf tooth roller 51 and the second wolf tooth roller 52 have a plurality of rigid structure tooth particles, and the tooth particles of the first wolf tooth roller 51 and the second wolf tooth roller 52 are staggered. When stones or debris in the flood pass through the first wolf tooth roller 51 and the second wolf tooth roller 52, they will be broken into small fragments by the tooth particles on the first wolf tooth roller 51 and the second wolf tooth roller 52.

[0057] Therefore, when the system performs flood control and drainage work, the flood will first pass through the crushing component 5, and the stones and debris mixed in the flood will be pushed by the water flow to the gap between the first wolf tooth roller 51 and the second wolf tooth roller 52, and will be squeezed and crushed into small-volume fragments as the first wolf tooth roller 51 and the second wolf tooth roller 52 rotate relative to each other, and the silt in the flood will directly pass through the crushing component 5 with the water flow; the flood that passes through the crushing component 5 flows to the screen cleaner 2, and the stones and debris crushed into small-volume fragments and part of the silt will be directly removed by the screen The sewage machine 2 is cleaned, and the other part of the silt either passes through the grille with the water flow or is blocked by the grille and deposited; among them, the silt that is blocked by the grille and deposited will be stirred by the first auger loosening machine 4 and will be swept away by the water flow fluctuation caused by the rotation of the spiral blades and flow to the grille sewage machine 2 again; the flood that passes through the grille sewage machine 2 is finally blocked by the gate 11 of the pump station 1, and the silt in the flood begins to deposit on the riverbed. At this time, the silt can be effectively removed by sucking it into the riverbed by the sand pump 3; finally, the pump station 1 can be opened and the water can be released in time according to the water level of the impoundment.

[0058] In one embodiment, see Figures 2 to 5 , the crushing assembly 5 also includes a roller seat 53;

[0059] The roller seat 53 is provided with a sliding mechanism fixedly connected to the rotating shaft of the second wolf tooth roller 52 , so that the second wolf tooth roller 52 can slide relatively in the roller seat 53 ; the rotating shaft of the first wolf tooth roller 51 is fixedly connected to the roller seat 53 .

[0060] In this embodiment, the roller seat 53 is used to set up and fix the first and second tooth rollers 51 and 52, and can also provide a work platform for operators to inspect and maintain the first and second tooth rollers 51 and 52. And by setting a sliding mechanism, the spacing between the first and second tooth rollers 51 and 52 can be adjusted, and then the degree of crushing of stones and debris by the crushing assembly 5 can be adaptively adjusted according to the processing capacity of the grille decontamination machine 2 for solid debris. Among them, the sliding mechanism can be a linear track with a locking structure, a mechanical rack structure or an electric slide rail.

[0061] Further, based on the aforementioned embodiment, the first wolf tooth roller 51 rotates clockwise along its rotation axis, and the second wolf tooth roller 52 rotates counterclockwise along its rotation axis, and the rotation axes of the first wolf tooth roller 51 and the second wolf tooth roller 52 both have a one-way rotation limiting mechanism.

[0062] In this embodiment, the first wolf-tooth roller 51 rotates clockwise along its rotation axis, and the second wolf-tooth roller 52 rotates counterclockwise along its rotation axis to ensure that the first wolf-tooth roller 51 and the second wolf-tooth roller 52 pull the stones and debris they contact to the center of the river channel 8 for crushing, rather than pulling them to the sides of the river channel 8 to cause blockage. In addition, by setting a one-way rotation limit mechanism, it can be ensured that the first wolf-tooth roller 51 and the second wolf-tooth roller 52 rotate in a predetermined direction, avoiding the impact caused by the uneven thrust of the water flow on different positions of the roller.

[0063] In one embodiment, the crushing assembly 5 further includes at least one auxiliary motor 54 and a pressure sensor;

[0064] The output shaft of the auxiliary motor 54 is fixedly connected to the rotating shaft of the first wolf tooth roller 51 and / or the rotating shaft of the second wolf tooth roller 52 ; the pressure sensor is electrically connected to the auxiliary motor 54 .

[0065] In this embodiment, when the crushing assembly 5 needs to work, the auxiliary motor 54 can provide a pre-rotation driving force for the first wolf tooth roller 51 and / or the second wolf tooth roller 52. When the first wolf tooth roller 51 and / or the second wolf tooth roller 52 can maintain a cyclic rotation state under the thrust of the water flow, the auxiliary motor 54 is disconnected from the power supply; and when encountering stones or debris that are so hard that they cannot be crushed by hydraulic drive, the stones or debris will be stuck between the first wolf tooth roller 51 and the second wolf tooth roller 52, and the reaction force generated by the squeeze contact will be transmitted to the pressure sensor through the roller. When the pressure sensor detects that the load is abnormal, the auxiliary motor 54 will be started again to increase the torque for the first wolf tooth roller 51 and / or the second wolf tooth roller 52 to crush the stones or debris under pressure. When the load returns to the initial range, the auxiliary motor 54 is turned off again. In this way, while ensuring the crushing capacity of the crushing assembly 5, the working time and output power of the motor can be reduced, saving energy.

[0066] In one embodiment, see Figures 6 to 8 The river flood control and drainage system also includes a backflow seat 6, which is arranged near the side of the crushing assembly 5 away from the pump station 1, and two backflow seats 6 are symmetrically arranged along the river banks on both sides;

[0067] The end surface of the backflow seat 6 on one side away from the crushing assembly 5 is an inclined surface, which is defined as the water-facing surface; the water-facing surface extends from the two river banks away from the crushing assembly 5 to the center of the river channel 8 near the first wolf tooth roller 51 or the second wolf tooth roller 52. By setting the backflow seat 6, it can be ensured that the stones and debris in the flood are guided to the center of the river channel 8 for crushing by the crushing assembly 5, and it is prevented that some stones and debris flow with the water flow to the dead corners near the river banks on both sides of the crushing assembly 5 to cause blockage, which affects the continuous operation of the flood control and drainage system.

[0068] Further, based on the aforementioned embodiment, the backflow seat 6 also includes an impact plate 61, and the impact plate 61 is fixedly connected to the water-facing surface through an elastic buffer structure.

[0069] In this embodiment, a plurality of protrusions are provided on the impact plate 61, and the plurality of protrusions are made of high-strength and wear-resistant metal materials. When stones and debris in the flood come into contact with the impact plate 61, the plurality of protrusions will exert a reaction force on the stones and debris, thereby protecting the backflow seat 6 and achieving a preliminary crushing effect on some of the stones and debris in the flood. The impact plate 61 is fixedly connected to the water-facing surface through an elastic buffer structure, which can buffer the impact force generated by the flood flow and the stones and debris in the flood, thereby preventing the impact force from being directly transmitted to the backflow seat 6. Specifically, the elastic buffer structure can be a spring structure, a hydraulic rod structure, a cylinder structure, etc.

[0070] In one embodiment, the river flood control and drainage system also includes a comprehensive monitoring component.

[0071] In this embodiment, the comprehensive monitoring component includes a water level monitoring element and a flow velocity sensing element; the water level monitoring element is fixedly connected to the outer end surface of the backflow seat 6, and the flow velocity sensing element is arranged in an elastic buffer structure. By monitoring the flood flow velocity and water level, the pump station 1 can be timely controlled to perform drainage regulation. Among them, the water level monitoring element is arranged on the outer end surface of the backflow seat 6, which can directly contact the water flow, and the current flood water level can be conveniently obtained according to the immersion depth of the backflow seat 6; the flow velocity sensing element is arranged in the elastic buffer structure, and the current flood flow velocity can be obtained according to the impact force exerted by the water flow on the impact plate 61, thereby estimating the water flow.

[0072] In one embodiment, the integrated monitoring component also includes a biosensor element for monitoring the organic biological reaction in the water flowing to the backflow seat 6. The biosensor element is set to monitor the organic biological reaction in the water flow, determine whether there are dehydrated personnel or living animals, and then control the flood control and drainage system to shut down related components to prevent secondary damage to the dehydrated personnel or animals. Specifically, the biosensor element can be realized by an infrared temperature measurement device, using the infrared radiation of the organism to convert heat energy into an electrical signal to feed back to the processing equipment or issue an alarm.

[0073] In one embodiment, see Figure 7 and Figure 8 The river flood control and drainage system also includes a second auger loosening machine 7, which is arranged near the riverbed and between the screen dirt remover 2 and the pump station 1. The second auger loosening machine 7 can assist the sand pump 3 in removing sediment, so as to avoid the situation where the sand pump 3 cannot keep up with the sediment deposition speed due to excessive flood sediment content, resulting in sediment deposition and raising the water level.

[0074] In one embodiment, based on the above embodiments, the pump station 1 is provided with a control room equipped with a processor;

[0075] The grille dirt remover 2, the sand pump 3, the first auger loosener 4, the auxiliary motor 54, the pressure sensor, the integrated monitoring component and the second auger loosener 7 are all electrically connected to the processor.

[0076] In summary, when the river flood control and drainage system of the present application is in actual operation, the staff of the pump station 1 first observes the flood situation and gradually starts the auxiliary motor 54, the screen cleaner 2, the first auger loosener 4, the sand pump 3 and the second auger loosener 7 in the control room to start the various components. The flood will pass through the various components of the flood control and drainage system in turn and will eventually be intercepted by the gate 11 of the pump station 1. The stones, mud and debris therein are gradually removed by the crushing component 5, the screen cleaner 2 and the sand pump 3; and according to the water level and flow information obtained by the water level monitoring element and the flow rate sensing element of the comprehensive monitoring component, when the real-time water storage situation is close to the maximum interception capacity of the pump station 1, the gate 11 of the pump station 1 is opened for drainage regulation; and when the biosensor element of the comprehensive monitoring component recognizes a life response, the processor will control the auxiliary motor 54, the screen cleaner 2, the first auger loosener 4, the sand pump 3 and the second auger loosener 7 to stop urgently to avoid secondary damage to the people or animals who have lost water.

[0077] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

[0078] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A river flood control and drainage system, characterized in that: It comprises a pump station (1), a screen dirt remover (2), a sand pump (3), a first auger loosening machine (4) and a crushing assembly (5); The crushing assembly (5), the first auger loosening machine (4), the screen dirt remover (2), the sand pump (3) and the pump station (1) are arranged in sequence along the water flow direction of the river channel; the sand pump (3) and the first auger loosening machine (4) are both arranged close to the riverbed, and the sand pump (3) is located between the gate (11) of the pump station (1) and the screen of the screen dirt remover (2); the first auger loosening machine (4) is located on the side of the screen dirt remover (2) away from the sand pump (3); The crushing assembly (5) comprises a first wolf-tooth roller (51) and a second wolf-tooth roller (52), and the rotation axes of the first wolf-tooth roller (51) and the second wolf-tooth roller (52) are both perpendicular to the riverbed.

2. The river flood control and drainage system according to claim 1, characterized in that: The crushing assembly (5) further comprises a roller seat (53); A sliding mechanism fixedly connected to the rotating shaft of the second wolf tooth roller (52) is arranged on the roller shaft seat (53), so that the second wolf tooth roller (52) can slide relatively in the roller shaft seat (53); the rotating shaft of the first wolf tooth roller (51) is fixedly connected to the roller shaft seat (53).

3. The river flood control and drainage system according to claim 1, characterized in that: The first wolf tooth roller (51) rotates clockwise along its rotation axis, and the second wolf tooth roller (52) rotates counterclockwise along its rotation axis, and the rotation axes of the first wolf tooth roller (51) and the second wolf tooth roller (52) are both provided with a unidirectional rotation limiting mechanism.

4. The river flood control and drainage system according to claim 1, characterized in that: The crushing assembly (5) also includes at least one auxiliary motor (54) and a pressure sensor; The output shaft of the auxiliary motor (54) is fixedly connected to the rotating shaft of the first wolf tooth roller (51) and / or the rotating shaft of the second wolf tooth roller (52); and the pressure sensor is electrically connected to the auxiliary motor (54).

5. The river flood control and drainage system according to claim 1, characterized in that: It also includes two backflow seats (6), which are symmetrically arranged on the upstream side of the crushing assembly (5); The end surface of the backflow seat (6) facing away from the crushing assembly (5) is an inclined surface, which is defined as the water-facing surface; the water-facing surface extends from the two river banks away from the crushing assembly (5) to the center of the river channel near the first wolf tooth roller (51) or the second wolf tooth roller (52).

6. The river flood control and drainage system according to claim 5, characterized in that: The backflow seat (6) also includes an impact plate (61), and the impact plate (61) is fixedly connected to the water-facing surface via an elastic buffer structure.

7. The river flood control and drainage system according to claim 6, characterized in that: It also includes a comprehensive monitoring component; The comprehensive monitoring component comprises a water level monitoring element and a flow velocity sensing element; the water level monitoring element is fixedly connected to the outer end surface of the backflow seat (6), and the flow velocity sensing element is arranged in the elastic buffer structure.

8. The river flood control and drainage system according to claim 7, characterized in that: The integrated monitoring assembly also includes a biosensor element for monitoring organic biological reactions in the water flowing toward the backflow seat (6).

9. The river flood control and drainage system according to claim 1, characterized in that: It also comprises a second auger loosening machine (7), which is arranged near the riverbed and located between the screen dirt remover (2) and the pump station (1).

10. The river flood control and drainage system according to any one of claims 1 to 9, characterized in that: The pump station (1) is provided with a control room equipped with a processor; The grid dirt remover (2), the sand pump (3), the first auger loosener (4), the auxiliary motor (54), the pressure sensor, the comprehensive monitoring component and the second auger loosener (7) are all electrically connected to the processor.

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