A farmland irrigation and drainage channel system

Abstract

The utility model relates to farmland irrigation technical field, a kind of farmland irrigation and drainage channel system, including main channel, secondary channel and drain pipe, drain pipe is fixedly arranged between main channel mouth and secondary channel mouth, for connecting main channel and secondary channel, the water baffle for stopping water of one end of main channel is fixedly installed, water baffle includes first lifting assembly, the inner wall of main channel is fixedly installed in the two sides of first lifting assembly, second lifting assembly is slidably installed in the front side of first lifting assembly, third drainage plate is fixedly installed on the side wall of main channel, the cleaning assembly rotating with water flow is provided in drain pipe inner wall, cleaning assembly slides left and right along drain pipe inner wall, the top of main channel and secondary channel is fixedly installed with water level sensing component for sensing water level. The utility model realizes the accurate control of the water level of main channel and secondary channel by the linkage of water baffle and water level sensing component, and the reciprocating motion of cleaning assembly effectively prevents silt accumulation, and keeps pipeline unobstructed.

Description

Technical Field

[0001] This utility model relates to the field of farmland irrigation technology, and in particular to a farmland irrigation and drainage channel system. Background Technology

[0002] Irrigation canals are waterways that connect irrigation water sources to irrigated land. During the process of paddy field cultivation, intermittent irrigation and drainage are required to ensure that the water volume in the paddy field is moderate. In areas with high groundwater levels, drainage is even more important. At the same time, irrigating different fields simultaneously during farmland irrigation will result in different irrigation water volumes for each field. Excessive or insufficient water volume is not conducive to crop growth.

[0003] An existing farmland irrigation and drainage system, authorized by publication number CN222923705U, uses a pump and a pumping pipe to draw water from the main channel into a secondary channel, and then delivers the water to the farmland for irrigation. However, this system requires connecting pipes to facilitate the flow of water from the main channel into the secondary channel. As water flows from the main channel into the secondary channel through these pipes, deposits, impurities, silt, or sediment enter the pipes. These substances gradually adhere to the inner walls of the pipes, easily causing blockages over time and hindering the normal flow of water. Therefore, there is an urgent need for a farmland irrigation and drainage system that facilitates cleaning of the inner walls of the pipes connecting the main and secondary channels. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: A farmland irrigation and drainage system includes a main channel, secondary channels, and a drainage pipe. The main channel has main channel openings on both sides. The secondary channels are fixedly connected to both sides of the main channel, and secondary channel openings are formed on their side walls. The drainage pipe is fixedly installed between the main channel openings and the secondary channel openings to connect the main channel and the secondary channel. A water-blocking device for preventing water leakage is fixedly installed at one end of the main channel. The water-blocking device includes a first lifting component, a second lifting component, and a third drainage plate. The two sides of the first lifting component are fixedly installed on the inner wall of the main channel. The second lifting component is slidably installed on the front side of the first lifting component. The third drainage plate is fixedly installed on the side wall of the main channel. A cleaning component that rotates with the water flow is provided on the inner wall of the drainage pipe and slides left and right along the inner wall of the drainage pipe. Water level sensing components for sensing water levels are fixedly installed on the top surfaces of the main channel and the secondary channel.

[0005] As an improvement to the above technical solution, the cleaning assembly includes a support plate, an impeller, a reciprocating screw, a bearing, and a threaded sleeve. The support plate is fixedly connected to the inner wall of the drain pipe near the main channel. One end of the reciprocating screw passes through the support plate and is fixedly connected to the impeller, while the other end is fixedly connected to the inner ring of the bearing. A cross support rod is fixedly connected between the outer ring of the bearing and the drain pipe. The threaded sleeve is threadedly connected to the periphery of the reciprocating screw. An insertion groove is provided on the periphery of the threaded sleeve. A connecting rod is rotatably connected inside the insertion groove. A brush plate is fixedly connected to the periphery of the connecting rod. The brush plate is tightly installed against the inner wall of the drain pipe. A spiral groove is provided on the inner wall of the drain pipe. A protrusion is provided at one end of the connecting rod, and the protrusion passes through the brush plate and is inserted into the spiral groove.

[0006] As an improvement to the above technical solution, the first lifting assembly includes a top mounting plate, a main motor, a first lead screw, a first slider, a base plate, a first limiting post, a first limiting slider, a front baffle, and a side mounting plate. The top mounting plate is bolted to the top wall of the main channel, the main motor is bolted to the middle of the top mounting plate, the top end of the first lead screw is rotatably mounted on the drive end of the main motor, the first slider has a built-in nut, and the nut cooperates with the first lead screw to achieve a sliding connection of the first slider, the middle of the base plate is rotatably connected to the bottom end of the first lead screw, two sets of the first limiting posts are fixedly mounted between the top mounting plate and the base plate, the first limiting slider is sleeved on the middle of the first limiting post, the two sides of the front baffle are bolted to the first limiting slider, the middle of the front baffle is bolted to the first slider, the side mounting plate is fixedly mounted on the two sides of the top mounting plate and the base plate, and the side mounting plate is bolted to the inner wall of the main channel.

[0007] As an improvement to the above technical solution, the second lifting assembly includes an L-shaped plate, an auxiliary motor, a second lead screw, a second slider, a second limiting post, a second limiting slider, and a mesh plate. Two sets of L-shaped plates are symmetrically bolted to the front side of the front baffle. The auxiliary motor is fixedly mounted on the top surface of the upper L-shaped plate. One end of the second lead screw is rotatably mounted on the drive end of the auxiliary motor, and the other end of the second lead screw is mounted on the surface of the lower L-shaped plate. The second slider is slidably mounted in the middle of the second lead screw. Two sets of second limiting posts are fixedly mounted between the L-shaped plates. The second limiting slider is sleeved and mounted in the middle of the second limiting post. The mesh plate is bolted to the outside of the second slider and the second limiting post.

[0008] As an improvement to the above technical solution, mounting seats are provided at the four corners of the third drainage board, and the mounting seats are fixedly installed inside the main channel opening.

[0009] As an improvement to the above technical solution, the bottom wall of the mesh plate is provided with several sets of U-shaped grooves, and the bottom of the third drainage plate is provided with several sets of drainage holes, the diameter of which is larger than the mesh diameter of the mesh plate.

[0010] As an improvement to the above technical solution, the water level sensing component includes a fixing plate and water level sensors. The fixing plate is bolted to the top of the main channel and the secondary channel. Two sets of water level sensors are fixedly installed on the bottom wall of the fixing plate. One set of water level sensors is located above the drainage ditch of the main channel, and the other set of water level sensors is located above the drainage ditch of the secondary channel. The water level sensors are electrically connected to the main motor and the auxiliary motor.

[0011] As an improvement to the above technical solution, the entire exterior of the water-blocking device is coated with a moisture-proof coating.

[0012] The beneficial effects of this utility model are: 1. This utility model achieves precise control of the water level in the main and secondary channels through the linkage of the water-blocking device and the water level sensing component, avoiding insufficient irrigation or waterlogging. It dynamically adjusts the water volume according to the needs of the fields, improving irrigation efficiency and saving water resources. The reciprocating motion of the cleaning component effectively prevents the accumulation of silt, keeps the pipes unobstructed, and extends the service life of the equipment. The lifting component and drainage plate design of the water-blocking device effectively prevent the risk of backflow when the water level in the main channel is too high. When water flows through the drainage pipe, it impacts the impeller, causing it to rotate around the top of the reciprocating screw. The impeller drives the reciprocating screw to rotate, and the rotation of the impeller is transmitted through the reciprocating screw, causing the reciprocating screw to rotate inside the bearing. The linear reciprocating motion of the threaded sleeve, driven by the rotation of the reciprocating screw, causes the threaded sleeve to reciprocate along its axial direction. The threaded sleeve drives the brush plate to reciprocate through the connecting rod. The protrusion of the brush plate engages inside the spiral groove, ensuring that the brush plate can rotate spirally with the spiral groove, cleaning silt and debris. The brush plate directly contacts the inner wall of the drainage pipe, effectively removing silt, algae, and other attachments, preventing pipe blockage. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the first lifting component of this utility model; Figure 3 This is a structural diagram of the second lifting component of this utility model; Figure 4 This is a structural diagram of the third drainage board of this utility model; Figure 5 This is a cross-sectional view of the cleaning component of this utility model; Figure 6 This is a diagram showing the connection between the reciprocating screw and the threaded sleeve of this utility model. Figure 7 This is a structural diagram of the threaded sleeve and connecting rod of this utility model.

[0014] Reference numerals: 1. Main channel; 11. Main channel opening; 2. Secondary channel; 21. Secondary channel opening; 3. Water-blocking device; 31. First lifting assembly; 311. Top mounting plate; 312. Main motor; 313. First lead screw; 314. First slider; 315. Base plate; 316. First limiting post; 317. First limiting slider; 318. Front baffle; 319. Side mounting plate; 32. Second lifting assembly; 321. L-shaped plate; 322. Auxiliary motor; 323. Second lead screw; 324. Second slider 325. Second limiting post; 326. Second limiting slider; 327. Mesh plate; 33. Third drainage plate; 331. Mounting base; 332. Drainage hole; 4. Cleaning assembly; 41. Drainage pipe; 411. Spiral groove; 42. Support plate; 43. Impeller; 44. Reciprocating screw; 45. Cross support rod; 46. Bearing; 47. Threaded sleeve; 471. Insertion groove; 48. Connecting rod; 481. Protrusion; 49. Brush plate; 5. Water level sensing assembly; 51. Fixing plate; 52. Water level sensor. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0016] Please see Figure 1-7 This utility model provides a technical solution: A farmland irrigation and drainage system includes a main channel 1, a secondary channel 2, and a drainage pipe 41. The main channel 1 has main channel openings 11 on both sides. The secondary channel 2 is fixedly connected to both sides of the main channel 1, and has secondary channel openings 21 on its sidewalls. The drainage pipe 41 is fixedly installed between the main channel openings 11 and 21 to connect the main channel 1 and the secondary channel 2. A water-blocking device 3 for blocking water discharge is fixedly installed at one end of the main channel 1. The water-blocking device 3 includes a first lifting component 31, a second lifting component 32, and a third drainage plate 33. The first lifting component 31 is fixedly installed on both sides of the inner wall of the main channel 1. The second lifting component 32 is slidably installed on the front side of the first lifting component 31. The third drainage plate 33 is fixedly installed on the sidewall of the main channel 1. A cleaning component 4 that rotates with the water flow is provided on the inner wall of the drainage pipe 41. The cleaning component 4 slides left and right along the inner wall of the drainage pipe 41. Water level sensing components 5 for sensing water levels are fixedly installed on the top surfaces of the main channel 1 and the secondary channel 2.

[0017] In this implementation scheme, the main channel 1 serves as the primary water delivery route for irrigation. Main channel openings 21 are located on both sides to connect to secondary channels 2. The secondary channels 2 are distributed on both sides of the main channel 1 and connect to the main channel 1 via the secondary channel openings 21, responsible for delivering water to specific fields. A first lifting component 31 is fixedly installed on the inner wall of the main channel 1, serving as the supporting structure for the water-blocking device 3 and providing basic lifting functionality. A second lifting component 32 is slidably installed in front of the first lifting component 31, allowing for height adjustment to accommodate different water level requirements. A third drainage plate 33 is fixed to the side wall of the main channel 1 to control the direction of water flow. To prevent backflow or overflow, drain pipe 41 is fixedly installed between the main channel opening 11 and the secondary channel opening 21. The inner wall of drain pipe 41 is closer to the main channel opening 11 on the right and closer to the secondary channel opening 21 on the left. Cleaning component 4 cleans the mud and debris in the pipe through reciprocating motion to prevent blockage. Water level sensing component 5 monitors the water level of the main channel 1 and the secondary channel 2 in real time and transmits the data to the control system through the sensor. Water blocking device 3 adjusts the height of the second lifting component 32 according to the data fed back by water level sensing component 5, so that the water level of the main channel 1 is maintained at a suitable irrigation height. Water flows through... The main channel 11 and secondary channel 21 enter the secondary channel 2, transporting water to the fields. During irrigation, the cleaning component 4 operates periodically or continuously to prevent silt accumulation. When the fields need drainage, the second lifting component 32 lowers its height, and the third drainage plate 33 guides the water flow into the main channel 1. The water level sensing component 5 monitors the water level in real time to prevent backflow caused by excessively high water levels in the main channel 1. During drainage, the cleaning component 4 continues to operate to prevent silt from entering the main channel 1 with the water flow. When the water level in the main channel 1 approaches the water level in the secondary channel 2, the water level sensing component 5 triggers an alarm, and the water-blocking device 3 automatically adjusts its height to prevent backflow. In extreme conditions such as heavy rain, the water-blocking device 3 is fully opened, the third drainage plate 33 accelerates drainage, and the cleaning component 4 operates at high frequency to ensure unobstructed pipes. Through the linkage of the water-blocking device 3 and the water level sensing component 5, the water level of the main channel 1 and the secondary channel 2 is precisely controlled to avoid insufficient irrigation or waterlogging. The water volume is dynamically adjusted according to the needs of the fields to improve irrigation efficiency and save water resources. The reciprocating motion of the cleaning component 4 effectively prevents the accumulation of silt, keeps the pipes unobstructed, and extends the service life of the equipment. The lifting component and drainage plate design of the water-blocking device 3 effectively prevent the risk of backflow when the water level of the main channel 1 is too high.

[0018] Specifically, the cleaning component 4 includes a support plate 42, an impeller 43, a reciprocating screw 44, a bearing 46, and a threaded sleeve 47. The support plate 42 is fixedly connected to the inner wall of the drain pipe 41 near the main channel 1. One end of the reciprocating screw 44 passes through the support plate 42 and is fixedly connected to the impeller 43, while the other end is fixedly connected to the inner ring of the bearing 46. A cross support rod 45 is fixedly connected between the outer ring of the bearing 46 and the drain pipe 41. The threaded sleeve 47 is threadedly connected to the outer periphery of the reciprocating screw 44. An insertion groove 471 is provided on the outer periphery of the threaded sleeve 47. A connecting rod 48 is rotatably connected inside the insertion groove 471. A brush plate 49 is fixedly connected to the outer periphery of the connecting rod 48. The brush plate 49 is tightly installed against the inner wall of the drain pipe 41. A spiral groove 411 is provided on the inner wall of the drain pipe 41. A protrusion 481 is provided at one end of the connecting rod 48. The protrusion 481 passes through the brush plate 49 and is inserted into the spiral groove 411.

[0019] In this embodiment, the drain pipe 41 serves as a water flow channel, inserted and fixed inside the main channel opening 11 and the secondary channel opening 21 to achieve communication between the main channel 1 and the secondary channel 2. A spiral groove 411 is formed on the inner wall to cooperate with the protrusion 481 of the brush plate 49, enabling reciprocating motion. The support plate 42 supports the rotation of the impeller 43, with both ends fixed to the inner wall of the drain pipe 41 and a insertion interface in the middle for the front end of the impeller 43 to be inserted. The impeller 43 converts the water flow power into mechanical energy, driving the reciprocating screw 44 to rotate. The impeller 43 is fixedly installed at the top of the reciprocating screw 44, with its front end inserted into the middle of the support plate 42. The reciprocating screw 44 rotates the impeller 43. The rotational motion of impeller 43 is converted into the linear reciprocating motion of threaded sleeve 47. One end is fixedly connected to impeller 43, and the other end is fixedly installed on the inner ring of bearing 46. Cross support rod 45 is fixedly installed on the inner wall of the other end of drain pipe 41 to provide support for bearing 46. The center of cross support rod 45 is fixedly connected to the outer ring of bearing 46. Reciprocating screw 44 is installed on the inner ring of bearing 46 to reduce rotational friction. Threaded sleeve 47 is sleeved on the middle of reciprocating screw 44, and linear motion is achieved through threaded engagement. Insertion groove 471 is opened on the outer wall of threaded sleeve 47. One end of connecting rod 48 is inserted into insertion groove 471 to connect threaded sleeve. 47 and brush plate 49, one end of the connecting rod 48 is provided with a rotating arm, the rotating arm is inserted into the insertion groove 471 and can rotate freely inside the insertion groove 471, the other end of the connecting rod 48 is provided with a protrusion 481, the protrusion 481 penetrates the brush plate 49 and is engaged inside the spiral groove 411, the brush plate 49 cleans the mud and debris on the inner wall of the drain pipe 41 through reciprocating and rotating motion, and is fixed to the top surface of the connecting rod 48, the protrusion 481 penetrates its surface and is engaged inside the spiral groove 411; the working process of the cleaning component 4: the water flow drives the impeller 43 to rotate, when the water flow passes through the drain pipe 41, it impacts the impeller 4 3. This causes the impeller 43 to rotate around the top of the reciprocating screw 44, thereby driving the reciprocating screw 44 to rotate. The rotation of the impeller 43 is transmitted through the reciprocating screw 44, causing the reciprocating screw 44 to rotate inside the bearing 46. The rotation of the reciprocating screw 44 drives the threaded sleeve 47 to reciprocate along its axial direction. The threaded sleeve 47 drives the brush plate 49 to reciprocate through the connecting rod 48. The protrusion 481 of the brush plate 49 is engaged inside the spiral groove 411, ensuring that the brush plate 49 can rotate spirally with the spiral groove 411 to clean mud and debris. The brush plate 49 directly contacts the inner wall of the drain pipe 41, which can effectively remove mud, algae and other attachments and prevent pipe blockage.

[0020] The water flow driving the impeller 43 to rotate is existing technology, which is a mature technology in the existing technology, so it will not be described in detail.

[0021] Specifically, the first lifting assembly 31 includes a top mounting plate 311, a main motor 312, a first lead screw 313, a first slider 314, a base plate 315, a first limiting post 316, a first limiting slider 317, a front baffle 318, and a side mounting plate 319. The top mounting plate 311 is bolted to the top wall of the main channel 1. The main motor 312 is bolted to the middle of the top mounting plate 311. The top end of the first lead screw 313 is rotatably mounted on the drive end of the main motor 312. The first slider 314 is slidably mounted on the middle of the first lead screw 313. The first slider 314 has a built-in lead screw nut, which is connected to the first lead screw. Rod 313 is used to achieve sliding connection of the first slider 314. The middle part of the base plate 315 is rotatably connected to the bottom end of the first lead screw 313. Two sets of first limiting posts 316 are fixedly installed between the top mounting plate 311 and the base plate 315. The first limiting slider 317 is sleeved on the middle part of the first limiting post 316. The two sides of the front baffle 318 are bolted to the first limiting slider 317. The middle part of the front baffle 318 is bolted to the first slider 314. The side mounting plate 319 is fixedly installed on both sides of the top mounting plate 311 and the base plate 315. The side mounting plate 319 is bolted to the inner wall of the main channel 1.

[0022] In this embodiment, the top mounting plate 311 serves as the top fixing structure of the component, and is bolted to the top wall of the main channel 1 to provide overall support. The main motor 312 drives the first lead screw 313 to rotate, providing lifting power. A motor with high waterproof and dustproof rating is selected to adapt to the farmland irrigation and drainage environment. An overload protection device is added to the motor to prevent damage due to excessive resistance. The first lead screw 313 converts the rotational motion of the main motor 312 into the linear motion of the first slider 314. The first slider 314 slides along the first lead screw 313, driving the front baffle 318 to move. The bottom plate 315 is rotatably mounted on the bottom end of the first lead screw 313 to provide bottom support. The first limiting post 316 restricts the movement direction of the front baffle 318 to prevent deviation. A limiting slider 317 slides along the first limiting post 316, guiding the linear movement of the front baffle 318. The front baffle 318 acts as a water-blocking component, adjusting the water level by lifting. The side mounting plate 319 reinforces the sides of the top mounting plate 311 and the bottom plate 315, improving overall stability. Working principle: The main motor 312 drives the first lead screw 313 to rotate, and the first slider 314 moves along the lead screw axis. The front baffle 318 is lifted up and down by the first slider 314 and the first limiting slider 317. The first limiting post 316 and the first limiting slider 317 ensure the linear movement of the front baffle 318, preventing deviation or rotation. By lifting or lowering the front baffle 318, the water level in the main channel 1 is adjusted to meet irrigation or drainage needs.

[0023] Specifically, the second lifting assembly 32 includes an L-shaped plate 321, an auxiliary motor 322, a second lead screw 323, a second slider 324, a second limiting post 325, a second limiting slider 326, and a mesh plate 327. Two sets of L-shaped plates 321 are symmetrically bolted to the front side of the front baffle 318. The auxiliary motor 322 is fixedly mounted on the top surface of the upper L-shaped plate 321. One end of the second lead screw 323 is rotatably mounted on the drive end of the auxiliary motor 322, and the other end of the second lead screw 323 is mounted on the surface of the lower L-shaped plate 321. The second slider 324 is slidably mounted in the middle of the second lead screw 323 (the second slider 324 has a built-in nut, and the sliding connection is achieved through the cooperation of the nut and the second lead screw 323). Two sets of second limiting posts 325 are fixedly mounted between the L-shaped plates 321. The second limiting slider 326 is sleeved and mounted in the middle of the second limiting post 325. The mesh plate 327 is bolted to the outside of the second slider 324 and the second limiting post 325.

[0024] In this embodiment, the L-shaped plate 321 serves as the support frame for the second lifting assembly 32. Two sets of symmetrical bolts are installed on the front side of the front baffle 318, providing an overall mounting base. The auxiliary motor 322 drives the second lead screw 323 to rotate, providing lifting power for the mesh plate 327. The second lead screw 323 converts the rotational motion of the auxiliary motor 322 into the linear motion of the second slider 324. The second slider 324 slides along the second lead screw 323, driving the mesh plate 327 to move. The second limiting post 325 restricts the direction of movement of the mesh plate 327 to prevent deviation. The second limiting slider 326 moves along the second limiting post. 325 slides, guiding the linear movement of the screen plate 327. The screen plate 327 acts as a filter or water-blocking component, adjusting the water flow or filtering debris by lifting. Working principle: The auxiliary motor 322 drives the second lead screw 323 to rotate, and the second slider 324 moves along the axis of the lead screw. The screen plate 327 is lifted up and down by the second slider 324 and the second limiting slider 326. The second limiting post 325 and the second limiting slider 326 ensure the linear movement of the screen plate 327 and prevent deviation or rotation. By lifting or lowering the screen plate 327, the water flow is adjusted or debris is filtered to meet different irrigation and drainage needs.

[0025] Specifically, each of the four corners of the third drainage board 33 is provided with a mounting base 331, and the mounting base 331 is fixedly installed inside the main channel opening 11.

[0026] In this embodiment, the third drainage plate 33 serves as a drainage component of the main channel 1, used to control or regulate water flow. The mounting base 331 fixes the four corners of the third drainage plate 33 to ensure a stable connection between it and the main channel opening 11. Bolt-type fixing is used for easy disassembly and maintenance.

[0027] Specifically, the bottom wall of the mesh plate 327 is provided with several sets of U-shaped grooves, and the bottom of the third drainage plate 33 is provided with several sets of drainage holes 332, the diameter of the drainage holes 332 being larger than the mesh diameter of the mesh plate 327.

[0028] In this embodiment, the arc design of the U-shaped channel can reduce water flow resistance, improve water flow efficiency, and disperse the impact force of the water flow, protecting the structure of the mesh plate 327. The diameter of the drainage hole 332 of the third drainage plate 33 is larger than the mesh diameter of the mesh plate 327, ensuring that the water flow can pass smoothly and intercepting larger debris. The U-shaped channel and the drainage hole 332 work together to optimize the water flow path, reduce the impact force of the water flow on the equipment, and improve the overall stability.

[0029] Specifically, the water level sensing component 5 includes a fixing plate 51 and a water level sensor 52. The fixing plate 51 is bolted to the top of the main channel 1 and the secondary channel 2. Two sets of water level sensors 52 are fixedly installed on the bottom wall of the fixing plate 51. One set of water level sensors 52 is located above the drainage ditch of the main channel 1, and the other set of water level sensors 52 is located above the drainage ditch of the secondary channel 2. The water level sensors 52 are electrically connected to the main motor 312 and the auxiliary motor 322.

[0030] In this embodiment, the fixing plate 51 serves as the mounting base for the water level sensor 52, and is fixed at the top of the main channel 1 and the secondary channel 2 to ensure the stability of the sensor position. The water level sensor 52 monitors the water level of the main channel 1 and the secondary channel 2 in real time and transmits the data to the main motor 312 and the auxiliary motor 322 to achieve automated control. One set of sensors monitors the drainage level of the main channel 1, and the other set monitors the drainage level of the secondary channel 2 to ensure the precise control of the drainage system.

[0031] Specifically, the entire exterior of the water-blocking device 3 is coated with a moisture-proof coating.

[0032] In this embodiment, the moisture-proof coating is made of epoxy resin, which has excellent corrosion resistance, adhesion and wear resistance. It is suitable for humid environments, improves the corrosion resistance, weather resistance and durability of the water-blocking device 3, and reduces maintenance costs.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A farmland irrigation and drainage channel system, comprising a main channel (1), a secondary channel (2), and a drainage pipe (41), wherein the main channel (1) has main channel openings (11) on both sides, the secondary channel (2) is fixedly connected to both sides of the main channel (1), and the side wall of the secondary channel (2) has a secondary channel opening (21), and the drainage pipe (41) is fixedly disposed between the main channel opening (11) and the secondary channel opening (21) for connecting the main channel (1) and the secondary channel (2), characterized in that: One end of the main channel (1) is fixedly installed with a water-blocking device (3) for blocking water discharge. The water-blocking device (3) includes a first lifting component (31), a second lifting component (32) and a third drainage plate (33). The two sides of the first lifting component (31) are fixedly installed on the inner wall of the main channel (1). The second lifting component (32) is slidably installed on the front side of the first lifting component (31). The third drainage plate (33) is fixedly installed on the side wall of the main channel (1). The inner wall of the drain pipe (41) is provided with a cleaning component (4) that rotates with the water flow. The cleaning component (4) slides left and right along the inner wall of the drain pipe (41). The top surfaces of the main channel (1) and the secondary channel (2) are fixedly installed with water level sensing components (5) for sensing water level.

2. The farmland irrigation and drainage channel system according to claim 1, characterized in that: The cleaning assembly (4) includes a support plate (42), an impeller (43), a reciprocating screw (44), a bearing (46), and a threaded sleeve (47). The support plate (42) is fixedly connected to the inner wall of the drain pipe (41) near the main channel (1). One end of the reciprocating screw (44) passes through the support plate (42) and is fixedly connected to the impeller (43), while the other end is fixedly connected to the inner ring of the bearing (46). A cross support rod (45) is fixedly connected between the outer ring of the bearing (46) and the drain pipe (41). The threaded sleeve (47) is threadedly connected. Around the reciprocating screw (44), a threaded sleeve (47) is provided with a insertion groove (471). A connecting rod (48) is rotatably connected inside the insertion groove (471). A brush plate (49) is fixedly connected around the connecting rod (48). The brush plate (49) is tightly installed on the inner wall of the drain pipe (41). A spiral groove (411) is provided on the inner wall of the drain pipe (41). A protrusion (481) is provided at one end of the connecting rod (48). The protrusion (481) penetrates the brush plate (49) and is inserted into the spiral groove (411).

3. The farmland irrigation and drainage channel system according to claim 1, characterized in that: The first lifting assembly (31) includes a top mounting plate (311), a main motor (312), a first lead screw (313), a first slider (314), a base plate (315), a first limiting post (316), a first limiting slider (317), a front baffle (318), and a side mounting plate (319). The top mounting plate (311) is bolted to the top wall of the main channel (1), the main motor (312) is bolted to the middle of the top mounting plate (311), the top end of the first lead screw (313) is rotatably mounted on the drive end of the main motor (312), and the first slider (314) is slidably mounted on the middle of the first lead screw (313). The first slider (314) has a built-in lead screw nut, and the lead screw nut is connected to the first lead screw. (313) The first slider (314) is slidably connected to the bottom of the first screw (313) in the middle of the bottom plate (315). Two sets of the first limiting posts (316) are fixedly installed between the top mounting plate (311) and the bottom plate (315). The first limiting slider (317) is sleeved on the middle of the first limiting post (316). The two sides of the front baffle (318) are bolted to the first limiting slider (317). The middle of the front baffle (318) is bolted to the first slider (314). The side mounting plate (319) is fixedly installed on both sides of the top mounting plate (311) and the bottom plate (315). The side mounting plate (319) is bolted to the inner wall of the main channel (1).

4. The farmland irrigation and drainage canal system according to claim 1, characterized in that: The second lifting assembly (32) includes an L-shaped plate (321), an auxiliary motor (322), a second lead screw (323), a second slider (324), a second limiting post (325), a second limiting slider (326), and a mesh plate (327). Two sets of L-shaped plates (321) are symmetrically bolted to the front side of the front baffle (318). The auxiliary motor (322) is fixedly mounted on the top surface of the upper L-shaped plate (321). One end of the second lead screw (323) is rotatably mounted on the auxiliary motor (324). 22) The other end of the second lead screw (323) is installed on the surface of the lower L-shaped plate (321), the second slider (324) is slidably installed in the middle of the second lead screw (323), two sets of second limiting posts (325) are fixedly installed between the L-shaped plate (321), the second limiting slider (326) is sleeved and installed in the middle of the second limiting post (325), and the mesh plate (327) is bolted to the outside of the second slider (324) and the second limiting post (325).

5. A farmland irrigation and drainage channel system according to claim 1, characterized in that: The third drainage board (33) is provided with mounting bases (331) at all four corners, and the mounting bases (331) are fixedly installed inside the main channel opening (11).

6. A farmland irrigation and drainage channel system according to claim 4, characterized in that: The bottom wall of the mesh plate (327) is provided with several sets of U-shaped grooves, and the bottom of the third drainage plate (33) is provided with several sets of drainage holes (332). The diameter of the drainage holes (332) is larger than the mesh diameter of the mesh plate (327).

7. A farmland irrigation and drainage channel system according to claim 1, characterized in that: The water level sensing component (5) includes a fixing plate (51) and a water level sensor (52). The fixing plate (51) is bolted to the top of the main channel (1) and the secondary channel (2). Two sets of water level sensors (52) are fixedly installed on the bottom wall of the fixing plate (51). One set of water level sensors (52) is located above the drainage ditch of the main channel (1), and the other set of water level sensors (52) is located above the drainage ditch of the secondary channel (2). The water level sensors (52) are electrically connected to the main motor (312) and the auxiliary motor (322).

8. A farmland irrigation and drainage channel system according to claim 1, characterized in that: The entire exterior of the water-blocking device (3) is coated with a moisture-proof coating.

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