An anti-seepage channel structure for farmland irrigation

Abstract

The application provides a farmland irrigation anti-seepage channel structure and relates to the technical field of irrigation channels. The farmland irrigation anti-seepage channel structure comprises a channel body and a trash rack. The channel body is provided with a channel groove for containing water flow along the length direction of the channel body. The trash rack is arranged in the channel groove, and the bottom end of the trash rack is submerged in the water flow. The farmland irrigation anti-seepage channel structure can prevent the outlet from being blocked by floating objects.

Description

Technical Field

[0001] This application relates to the field of irrigation canal technology, and in particular to a seepage-proof irrigation canal structure for farmland. Background Technology

[0002] Common methods of farmland irrigation include flood irrigation, canal irrigation, and ditch irrigation. Canal irrigation involves diverting water from a water source into an irrigation canal, and then distributing the water to the farmland through the canal. This method allows for control of water volume and irrigation time as needed and is suitable for different types of crops.

[0003] Because existing farmland irrigation channels are usually open-air, and the water flow in the farmland irrigation channels is very small and the flow rate is very slow during non-irrigation periods, once a lot of floating objects such as weeds and fallen leaves are blown into a certain section of the channel by the wind, when it is time to irrigate, once these floating objects are carried to the outlet of the farmland irrigation channel by the increased water flow, it is easy for the floating objects to block the outlet of the farmland irrigation channel.

[0004] Therefore, there is a need to provide a seepage-proof channel structure for farmland irrigation. Summary of the Invention

[0005] To address the problem that existing farmland irrigation channels are prone to having their outlets blocked by floating debris, this application provides a farmland irrigation seepage-proof channel structure.

[0006] The present application provides a farmland irrigation seepage-proof channel structure, which adopts the following technical solution: it includes a channel body and a debris-blocking plate, wherein a channel groove for accommodating water flow is opened on the channel body along its own length direction;

[0007] The debris barrier is installed inside the channel, and the bottom end of the debris barrier is submerged in the water flow.

[0008] By adopting the above technical solution, during irrigation, the debris barrier can block floating objects such as weeds and fallen leaves from the water flow, so that these floating objects will not be carried by the water flow to the outlet of the farmland irrigation channel. As a result, the farmland irrigation anti-seepage channel structure is less likely to have the outlet of the farmland irrigation channel blocked by floating objects.

[0009] Specifically, it also includes a baffle drive assembly, wherein the baffle plate is slidably connected to the wall of the channel, and the baffle drive assembly is driven to the baffle plate. During non-irrigation time, the baffle drive assembly applies an upward force to the baffle plate and makes the bottom of the baffle plate higher than the water flow.

[0010] During irrigation, the baffle drive assembly applies a downward force to the baffle and immerses the bottom end of the baffle in the water flow.

[0011] By adopting the above technical solution, during irrigation, the user can apply a downward force to the baffle plate using the baffle drive assembly, so that the bottom of the baffle plate is submerged in the water flow in the channel. During non-irrigation periods, the user can apply an upward force to the baffle plate using the baffle drive assembly, so that the bottom of the baffle plate is higher than the water flow in the channel and no longer obstructs floating objects on the water flow. This allows the water flow in the channel to carry some floating objects to corners and other places in the channel where debris tends to accumulate, making it convenient for the user to clean up these debris.

[0012] Furthermore, the baffle drive assembly includes a pressure plate, a piston rod, and a baffle elastic element. A receiving groove is provided on the bottom wall of the channel groove. The side plate edge of the pressure plate abuts against the inner wall of the receiving groove and can block the opening of the receiving groove. The bottom plate surface of the pressure plate is inserted into the receiving groove and forms a liquid transfer chamber between the pressure plate and the bottom wall of the receiving groove.

[0013] The channel trough has a sluice groove on its side wall. The inside of the channel body has a piston chamber. The piston end of the piston rod is located in the piston chamber and divides the inside of the piston chamber into a rod chamber and a rodless chamber. The top wall of the sluice groove has a through hole in the vertical direction leading to the rod chamber. The rod end of the piston rod passes through the through hole and extends into the sluice groove and connects to the baffle plate. The wall of the liquid transfer chamber has a connecting hole leading to the rodless chamber. The liquid transfer chamber, the connecting hole, and the rodless chamber are all filled with transmission fluid.

[0014] The baffle elastic element is disposed between the baffle plate and the inner wall of the channel trough and can apply an upward force to the baffle plate.

[0015] By adopting the above technical solution, the water flow in the channel is large during irrigation, and the water pressure on the pressure plate is also large, which causes the pressure plate to sink and push the piston rod and the debris barrier to move downward through the transmission fluid; while the water flow in the channel is small during non-irrigation time, and the water pressure on the pressure plate is also small. At this time, the elastic element of the barrier can apply an upward force to the debris barrier, which causes the piston rod and the debris barrier to move upward through the transmission fluid.

[0016] Furthermore, the baffle drive assembly also includes a water-proof membrane, which is disposed between the top of the pressure plate and the bottom wall of the channel groove and can seal the gap between the pressure plate and the receiving groove.

[0017] By adopting the above technical solution, the water-proof membrane can seal the gap between the pressure plate and the receiving tank, so that the water in the channel tank is not easy to enter the liquid transmission chamber, and the transmission fluid in the liquid transmission chamber is not easy to leak out from the gap.

[0018] Specifically, the surface of the debris barrier is provided with multiple water-permeable holes.

[0019] By adopting the above technical solution, the setting of permeable holes can enhance the permeability of the debris barrier, so that the flow rate of water in the channel is not easily affected by the obstruction of the debris barrier.

[0020] Furthermore, it also includes a scraping component that, during non-irrigation periods, can move along the channel trough and scrape away debris adhering to the channel trough walls.

[0021] By adopting the above technical solution, users can use the scraper to remove debris such as fallen leaves and moss adhering to the channel wall during non-irrigation periods.

[0022] Furthermore, the scraping assembly includes a mounting housing, a moving wheel, a scraping unit, a transmission unit, and a motor. A track groove is formed on the side wall of the channel along its own length. The moving wheel is located inside the channel, and the rotating shaft of the moving wheel is connected to the mounting housing. The motor is located inside the mounting housing. The scraping unit can abut against the channel wall. The motor is connected to the moving wheel and the scraping unit via the transmission unit and can drive the scraping unit to move along the channel wall.

[0023] By adopting the above technical solution, the user can drive the moving wheel to rotate by the motor and drive the scraping component to move along the track groove. During the movement of the scraping component, the motor will also drive the scraping unit to move along the groove wall of the channel, thereby achieving the removal of debris adhering to the groove wall of the channel.

[0024] Furthermore, the scraping unit includes a horizontal scraping component and a vertical scraping component. The transmission unit includes a drive shaft, a worm gear, a worm, a high-position connecting rope, a low-position connecting rope, an inner fixed pulley, and two outer fixed pulleys. The drive shaft is rotatably connected to the inner wall of the mounting housing along the width direction of the channel groove. The worm gear is located on the shaft of the drive shaft. The worm is connected to the output shaft of the motor and meshes with the worm gear. A reciprocating screw-type threaded section is provided on the shaft of the drive shaft. The top end of the horizontal scraping component has a threaded hole adapted to the reciprocating screw-type threaded section and is screwed to the reciprocating screw-type threaded section through the threaded hole, so that the drive shaft can drive the horizontal scraping component to reciprocate along the reciprocating screw-type threaded section by its own rotation. An oblong hole is provided on the inner bottom wall of the mounting housing along the length direction of the drive shaft. The bottom end of the horizontal scraping component passes through the oblong hole and abuts against the bottom wall of the channel groove.

[0025] The mounting housing has a vertical scraping groove on its side wall. An external fixed pulley is located at each end of the scraping groove. One end of the vertical scraping member abuts against the side wall of the channel groove, and the other end is inserted into the scraping groove and can move along it. A clearance hole is provided on the transverse scraping member along the length of the drive shaft. The internal fixed pulley is located on the inner wall of the mounting housing, and the transverse scraping member is positioned between the internal fixed pulley and the two external fixed pulleys. One end of the high-position connecting rope is connected to the transverse... The high-position connecting rope is connected to the side of the scraper facing the scraper groove. The other end of the high-position connecting rope passes through the through hole opened on the mounting housing and goes around the outer fixed pulley located at the top of the scraper groove to connect to the top of the vertical scraper. One end of the low-position connecting rope is connected to the bottom of the vertical scraper. The other end of the low-position connecting rope goes around the outer fixed pulley located at the bottom of the scraper groove and passes through the through hole opened on the mounting housing and the clearance hole in sequence. Then it goes around the inner fixed pulley to connect to the side of the horizontal scraper facing away from the scraper groove.

[0026] By adopting the above technical solution, the motor can drive the drive shaft to rotate through the cooperation of the worm gear and worm. The setting of the reciprocating screw-type thread section allows the transverse scraper to abut against the wall of the oblong hole and reciprocate along the oblong hole when the drive shaft rotates. When the transverse scraper moves away from the scraping trough, the high-position connecting rope applies an upward force to the vertical scraper and moves the vertical scraper upward. When the transverse scraper moves closer to the scraping trough, the low-position connecting rope applies a downward force to the vertical scraper and moves the vertical scraper downward. Thus, the motor can drive the transverse and vertical scrapers to reciprocate while driving the moving wheel to rotate, thereby scraping away the debris adhering to the wall of the channel trough.

[0027] Furthermore, the transverse scraping component includes a telescopic cylinder, a scraping rod, and a scraping elastic element. The telescopic cylinder has a threaded hole on its body. The top end of the scraping rod is inserted into the telescopic cylinder and can slide along the inner wall of the telescopic cylinder. The scraping rod has a waist-shaped clearance hole in the vertical direction on its body. The bottom end of the scraping rod passes through the waist-shaped hole and abuts against the bottom wall of the channel. The scraping elastic element is disposed between the top end of the scraping rod and the inner wall of the telescopic cylinder and can apply a downward force to the scraping rod.

[0028] By adopting the above technical solution, since the top of the pressure plate is higher than the bottom wall of the channel when not irrigating, when the lateral scraper moves from the bottom wall of the channel to the pressure plate, the scraper bar can retract into the telescopic cylinder. When the lateral scraper bar returns from the pressure plate to the bottom wall of the channel, the scraping elastic element can drive the scraper bar to extend out of the telescopic cylinder, so that the lateral scraper can also scrape the top of the pressure plate.

[0029] Furthermore, the surface of the movable wheel is provided with anti-slip texture along the circumference.

[0030] By adopting the above technical solution, the anti-slip texture can increase the friction between the moving wheel and the track groove, so that the moving wheel is less likely to slip.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. A device comprising a channel body, a baffle plate, and a baffle plate driving assembly. The channel body has a channel groove along its length for accommodating water flow. The baffle plate is disposed within the channel groove, with its bottom end submerged in the water flow. The baffle plate is slidably connected to the channel wall. The baffle plate driving assembly is drively connected to the baffle plate. During non-irrigation periods, the baffle plate driving assembly applies an upward force to the baffle plate, causing its bottom end to be above the water flow. During irrigation periods, the baffle plate driving assembly applies a downward force to the baffle plate, causing its bottom end to be submerged in the water flow, thereby ensuring that… During irrigation, users can apply a downward force to the baffle plate using the baffle drive assembly, causing the bottom of the baffle plate to be submerged in the water flow in the channel. During non-irrigation periods, users can apply an upward force to the baffle plate using the baffle drive assembly, so that the bottom of the baffle plate is higher than the water flow in the channel and no longer obstructs floating objects on the water flow. This allows the water flow in the channel to carry some of the floating objects to corners and other places in the channel where debris tends to accumulate, making it easier for users to clean up these debris.

[0033] 2. The scraping assembly includes a mounting housing, movable wheels, a scraping unit, a transmission unit, and a motor. A track groove is formed on the side wall of the channel along its length. The movable wheels are located inside the channel, and the shafts of the movable wheels are connected to the mounting housing. The motor is located inside the mounting housing. The scraping unit can abut against the channel wall. The motor is connected to the movable wheels and the scraping unit via the transmission unit and can drive the scraping unit to move along the channel wall. This allows the user to drive the movable wheels to rotate via the motor and move the scraping assembly along the track groove. During the movement of the scraping assembly, the motor also drives the scraping unit to move along the channel wall, thereby scraping away the debris adhering to the channel wall. Attached Figure Description

[0034] Figure 1 This is a perspective view of a seepage-proof irrigation canal structure for farmland according to this application, showing only a section of the canal.

[0035] Figure 2 This is a top view of a seepage-proof irrigation canal structure for farmland according to this application;

[0036] Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the central axis in the AA direction;

[0037] Figure 4 It is along Figure 2 A schematic cross-sectional view taken along the centerline in the BB direction.

[0038] Reference numerals: 1. Channel body; 2. Baffle plate; 21. Water permeable hole; 3. Baffle plate drive assembly; 31. Pressure plate; 32. Piston rod; 33. Baffle plate elastic element; 34. Water-proof membrane; 4. Scraping assembly; 41. Mounting housing; 411. Waist-shaped hole; 42. Moving wheel; 421. Anti-slip texture; 43. Scraping unit; 431. Horizontal scraping element; 4311. Telescopic cylinder; 4312. Scraping rod; 4313. Scraping elastic element; 432. Vertical scraping element; 44. Transmission unit; 441. Drive shaft; 442. Worm gear; 443. High-position connecting rope; 444. Low-position connecting rope; 445. Inner fixed pulley; 446. Outer fixed pulley; 45. Motor. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-4 Further explanation:

[0040] See Figure 1 and Figure 2 In one embodiment, a farmland irrigation seepage-proof channel structure includes a channel body 1, three debris-blocking plates 2, three debris-blocking plate driving components 3, and a debris-scraping component 4. The channel body 1 can be entirely made of waterproof concrete to give the farmland irrigation seepage-proof channel structure good seepage-proof performance. One end of the channel body 1 is connected to a water source (not shown in the figure), and the other end has an outlet (not shown in the figure). A channel groove for accommodating water flow is opened along its length on the channel body 1. The three debris-blocking plates 2 are spaced apart in the channel groove. Each debris-blocking plate 2 has multiple permeable holes 21 on its surface to enhance the permeability of the debris-blocking plate 2, thereby making the water flow velocity in the channel groove less affected by the obstruction of the debris-blocking plate 2. The three debris-blocking plates 2 correspond one-to-one with the three debris-blocking plate driving components 3, and each debris-blocking plate driving component 3 is drivenly connected to a corresponding debris-blocking plate 2.

[0041] See Figure 2 and Figure 3The baffle drive assembly 3 includes a pressure plate 31, a water-resistant membrane 34, two piston rods 32, and two baffle elastic members 33. A receiving groove is formed on the bottom wall of the channel. The side plate edge of the pressure plate 31 abuts against the inner wall of the receiving groove and can seal the opening of the receiving groove. The bottom plate surface of the pressure plate 31 is inserted into the receiving groove, forming a liquid transfer chamber between the pressure plate 31 and the bottom wall of the receiving groove. The water-resistant membrane 34 is located between the top of the pressure plate 31 and the bottom wall of the channel. The water-resistant membrane 34 can be a plastic film, which can seal the gap between the pressure plate 31 and the receiving groove. A sliding groove is formed on the side wall of the channel. A piston chamber runs along the inside of the channel body 1. The piston rods 32... The piston end is located inside the piston chamber, which is divided into a rod chamber and a rodless chamber. A through hole leading to the rod chamber is opened vertically on the top wall of the chute. The rod end of the piston rod 32 passes through the through hole and extends into the chute, connecting with the baffle plate 2. A connecting hole leading to the rodless chamber is opened on the wall of the liquid transmission chamber. The liquid transmission chamber, the connecting hole, and the rodless chamber are all filled with transmission fluid, which can be water or other liquids with a density greater than water. Two baffle elastic members 33 are disposed opposite each other between the top of the baffle plate 2 and the chute wall. These baffle elastic members 33 can be tension springs, so that an upward force can be applied to the baffle plate 2 through the baffle elastic members 33.

[0042] See Figure 1 and Figure 4The scraping assembly 4 includes a mounting housing 41, two movable wheels 42, two scraping units 43, a transmission unit 44, and a motor 45. Track grooves are formed on both side walls of the channel along its length, each track groove extending through the entire length of the channel. The two movable wheels 42 correspond one-to-one with two channel grooves, each movable wheel 42 located within its corresponding channel groove. The scraping unit 43 includes a horizontal scraping component 431 and a vertical scraping component 432. The transmission unit 44 includes a drive shaft 441, a worm gear (not shown), a worm 442, and two high-position connecting ropes. 443, two low-position connecting ropes 444, four internal fixed pulleys 445 and four external fixed pulleys 446, drive shaft 441 is rotatably connected to the inner wall of mounting housing 41 along the width direction of the channel groove, the shafts of two movable wheels 42 are both connected to drive shaft 441, and anti-slip grooves 421 are provided circumferentially on the wheel surface of each movable wheel 42 to prevent slippage; worm gear is located in the middle of the shaft of drive shaft 441, motor 45 is located inside mounting housing 41, worm 442 is connected to the output shaft of motor 45 and meshes with worm gear, drive shaft 441... Two reciprocating screw-type threaded sections are formed on the shaft of drive shaft 41, centered on the worm gear. Each of the two reciprocating screw-type threaded sections corresponds to one of the two transverse scraping components 431. Each transverse scraping component 431 includes a telescopic cylinder 4311, a scraping rod 4312, and a scraping elastic element 4313. The telescopic cylinder 4311 has a threaded hole adapted to the reciprocating screw-type threaded section, allowing drive shaft 441 to drive the transverse scraping component 431 to reciprocate along the reciprocating screw-type threaded section via its own rotation. The top end of the scraping rod 4312 is inserted inside the telescopic cylinder 4311 and can move along the telescopic cylinder. The inner wall of the telescopic cylinder 4311 slides, and the scraper rod 4312 has a waist-shaped clearance hole in the vertical direction on its shaft. Two waist-shaped holes 411 are opened on the inner bottom wall of the mounting housing 41 along the length of the drive shaft 441. The bottom end of each scraper rod 4312 passes through a corresponding waist-shaped hole 411 and abuts against the bottom wall of the channel. The scraper elastic element 4313 is located between the top end of the scraper rod 4312 and the inner wall of the telescopic cylinder 4311. The scraper elastic element 4313 can be a compression spring so that a downward force can be applied to the scraper rod 4312 through the scraper elastic element 4313.

[0043] See Figure 1 and Figure 4On both sides of the mounting housing 41, vertical scraping grooves leading into the interior of the mounting housing 41 are provided. Each scraping groove corresponds to a vertical scraping component 432. At both ends of each scraping groove, there is an external fixed pulley 446. One end of each vertical scraping component 432 abuts against the corresponding side wall of the channel groove, and the other end of each vertical scraping component 432 extends through the scraping groove into the mounting housing 41 and can move along the scraping groove. A pair of abutting protrusions are also formed on the outer wall of each vertical scraping component 432, and the housing wall of the mounting housing 41 is abutted between these abutting protrusions. Four internal fixed pulleys 445 are arranged in pairs on the inner wall of the mounting housing 41, centered on the motor 45. Each horizontal scraping component 431 is located between two corresponding internal fixed pulleys 445 and two corresponding external fixed pulleys 446. One end of each high-position connecting rope 443 is connected to the side of a corresponding horizontal scraper 431 facing the scraper groove. The other end of each high-position connecting rope 443 passes through a through hole in the mounting housing 41 and around an external fixed pulley 446 located at the top of the scraper groove, connecting to the top of a corresponding vertical scraper 432. One end of each low-position connecting rope 444 is connected to the bottom of a corresponding vertical scraper 432. The other end of each low-position connecting rope 444 passes around an external fixed pulley 446 located at the bottom of the scraper groove and passes through a through hole and a corresponding clearance hole in the mounting housing 41 in sequence, then around two corresponding internal fixed pulleys 445, connecting to the side of a corresponding horizontal scraper 431 facing away from the scraper groove. The high-position connecting ropes 443 and low-position connecting ropes 444 can be metal ropes with good corrosion resistance.

[0044] The principle of the anti-seepage channel structure for farmland irrigation described in this application during non-irrigation periods is as follows:

[0045] The motor 45 can drive the drive shaft 441 to rotate through the cooperation of the worm gear and worm 442. The reciprocating screw thread section allows the transverse scraper 431 to abut against the wall of the waist-shaped hole 411 and reciprocate along the waist-shaped hole 411 when the drive shaft 441 rotates. When the transverse scraper 431 moves away from the scraping trough, the high-position connecting rope 443 applies an upward force to the vertical scraper 432 and moves the vertical scraper 432 upward. When the transverse scraper 431 moves closer to the scraping trough, the low-position connecting rope 444 applies a downward force to the vertical scraper 432 and moves the vertical scraper 432 downward. Thus, the motor 45 can drive the transverse scraper 431 and the vertical scraper 432 to reciprocate while driving the moving wheel 42 to scrape off the debris adhering to the wall of the channel trough, thereby achieving the removal of debris adhering to the wall of the channel trough.

[0046] Since the top of the pressure plate 31 is higher than the bottom wall of the channel when not irrigating, when the transverse scraper 431 moves from the bottom wall of the channel to the pressure plate 31, the scraper rod 4312 can retract into the telescopic cylinder 4311. When the transverse scraper rod 4312 returns from the pressure plate 31 to the bottom wall of the channel, the scraper elastic element 4313 can drive the scraper rod 4312 to extend out of the telescopic cylinder 4311, so that the transverse scraper 431 can also scrape the top of the pressure plate 31.

[0047] The implementation principle of the farmland irrigation seepage-proof channel structure described in this application is as follows:

[0048] During irrigation, the water flow in the channel is high, resulting in significant water pressure on the pressure plate 31. This causes the pressure plate 31 to sink, pushing the piston rod 32 and the debris barrier 2 downwards via the transmission fluid. The bottom of the debris barrier 2 is then submerged in the water flow, blocking floating debris such as weeds and fallen leaves. This prevents these debris from being carried to the outlet of the irrigation channel, thus reducing the likelihood of the outlet being blocked by floating debris. During non-irrigation periods, the water flow in the channel is very small, and the water pressure on the pressure plate 31 is also very small. At this time, the elastic member 33 of the baffle plate can apply an upward force to the debris baffle 2, which in turn causes the piston rod 32 and the debris baffle 2 to move upward and push the pressure plate 31 upward through the transmission fluid so that the bottom of the debris baffle 2 is higher than the water flow in the channel and no longer blocks the floating objects on the water flow. This allows the water flow in the channel to carry some of the floating objects to the corners and other places in the channel where debris is easy to accumulate, making it convenient for users to clean up these debris in a concentrated manner.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An agricultural field irrigation seepage control channel structure, characterized by: Including the ditch body (1), the trash rack (2) and the dam board drive assembly (3), the ditch body (1) is opened along the length direction of itself and is used to accommodate the ditch groove of water flow; The trash rack (2) is arranged in the ditch groove and is slidably connected with the groove wall of the ditch groove, the dam board drive assembly (3) is drivingly connected with the trash rack (2), in the non-irrigation time, the dam board drive assembly (3) applies upward force to the trash rack (2) and makes the bottom end of the trash rack (2) higher than the water flow; In the irrigation time, the dam board drive assembly (3) applies downward force to the trash rack (2) and makes the bottom end of the trash rack (2) immersed in the water flow; The dam board drive assembly (3) includes a pressing plate (31), a piston rod (32) and a dam plate elastic element (33), a containing groove is opened on the bottom wall of the ditch groove, the side plate edge of the pressing plate (31) is abutted with the inner wall of the containing groove and can block the slot of the containing groove, the bottom plate surface of the pressing plate (31) is inserted into the containing groove and forms a liquid transmission cavity between the pressing plate (31) and the bottom wall of the containing groove; A sliding groove is opened on the side wall of the ditch groove, the inside of the ditch body (1) has a piston cavity, the piston end of the piston rod (32) is arranged in the piston cavity and divides the inside of the piston cavity into a rod chamber and a rodless chamber, a through hole is opened on the groove top wall of the sliding groove in the vertical direction and leads to the rod chamber, the rod end of the piston rod (32) is inserted into the sliding groove through the through hole and is connected with the trash rack (2), a communication hole is opened on the cavity wall of the liquid transmission cavity and leads to the rodless chamber, the liquid transmission cavity, the communication hole and the rodless chamber are filled with transmission liquid; The dam plate elastic element (33) is arranged between the trash rack (2) and the inner wall of the ditch groove and can apply upward force to the trash rack (2).

2. A farmland irrigation seepage-preventing channel structure according to claim 1, characterized in that: The dam board drive assembly (3) further includes a water-proof membrane (34), the water-proof membrane (34) is arranged between the top of the pressing plate (31) and the bottom wall of the ditch groove and can block the gap between the pressing plate (31) and the containing groove.

3. A farmland irrigation seepage-proof channel structure according to claim 1, characterized in that: A plurality of water-permeable holes (21) are opened on the plate surface of the trash rack (2).

4. A farmland irrigation seepage control channel structure according to claim 1, characterized in that: Further including a scraping assembly (4), in the non-irrigation time, the scraping assembly (4) can move along the ditch groove and scrape off the sundries adhered on the groove wall of the ditch groove.

5. A farmland irrigation seepage-preventing channel structure according to claim 4, characterized in that: The scraping assembly (4) includes a mounting shell (41), a moving wheel (42), a scraping unit (43), a transmission unit (44) and a motor (45), a track groove is opened on the side wall of the ditch groove along the length direction of itself, the moving wheel (42) is arranged in the ditch groove, the rotating shaft of the moving wheel (42) is connected with the mounting shell (41), the motor (45) is arranged inside the mounting shell (41), the scraping unit (43) can abut with the groove wall of the ditch groove, the motor (45) is drivingly connected with the moving wheel (42) and the scraping unit (43) through the transmission unit (44) and can drive the scraping unit (43) to move along the groove wall of the ditch groove.

6. An agricultural field irrigation seepage control channel structure according to claim 5, wherein: The scraping unit (43) comprises a transverse scraping piece (431) and a vertical scraping piece (432), the transmission unit (44) comprises a driving shaft (441), a worm gear, a worm (442), a high-position connecting rope (443), a low-position connecting rope (444), an inner shell fixed pulley (445) and two outer shell fixed pulleys (446), the driving shaft (441) is rotationally connected to the inner wall of the mounting shell (41) along the width direction of the channel groove, the worm gear is arranged on the shaft of the driving shaft (441), the worm (442) is connected with the output shaft of the motor (45) and is engaged with the worm gear, a reciprocating screw rod threaded section is formed in the shaft of the driving shaft (441), a threaded hole is formed in the top end of the transverse scraping piece (431) and is screwed with the reciprocating screw rod threaded section, so that the driving shaft (441) can drive the transverse scraping piece (431) to move reciprocally along the reciprocating screw rod threaded section through rotation, a waist-shaped hole (411) is formed in the inner bottom wall of the mounting shell (41) along the length direction of the driving shaft (441), and the bottom end of the transverse scraping piece (431) penetrates through the waist-shaped hole (411) and abuts against the groove bottom wall of the channel groove; A scraping groove is formed in the side wall of the mounting shell (41) along the vertical direction, one of the outer shell fixed pulleys (446) is arranged at each end of the scraping groove, one end of the vertical scraping piece (432) abuts against the groove side wall of the channel groove, the other end of the vertical scraping piece (432) is inserted into the scraping groove and can move along the scraping groove, a clearance hole is formed in the transverse scraping piece (431) along the length direction of the driving shaft (441), the inner shell fixed pulley (445) is arranged on the inner wall of the mounting shell (41), and the transverse scraping piece (431) is located between the inner shell fixed pulley (445) and the two outer shell fixed pulleys (446), one end of the high-position connecting rope (443) is connected to the side of the transverse scraping piece (431) facing the scraping groove, the other end of the high-position connecting rope (443) penetrates through the through hole formed in the mounting shell (41) and is wound around the outer shell fixed pulley (446) located at the top end of the scraping groove and is connected to the top of the vertical scraping piece (432), one end of the low-position connecting rope (444) is connected to the bottom of the vertical scraping piece (432), the other end of the low-position connecting rope (444) is wound around the outer shell fixed pulley (446) located at the bottom end of the scraping groove, penetrates through the through hole formed in the mounting shell (41) and the clearance hole in sequence, and is wound around the inner shell fixed pulley (445) and is connected to the side of the transverse scraping piece (431) away from the scraping groove.

7. An agricultural field irrigation seepage control channel structure according to claim 6, wherein: The transverse scraping member (431) comprises a telescopic cylinder (4311), a scraping rod (4312) and a scraping elastic member (4313), the cylinder body of the telescopic cylinder (4311) is provided with the threaded hole, the top end of the scraping rod (4312) is inserted into the telescopic cylinder (4311) and can slide along the inner wall of the telescopic cylinder (4311), the rod body of the scraping rod (4312) is provided with the waist-shaped accommodation hole in the vertical direction, the bottom end of the scraping rod (4312) penetrates through the waist-shaped hole (411) and abuts against the groove bottom wall of the channel groove, and the scraping elastic member (4313) is arranged between the top end of the scraping rod (4312) and the inner wall of the telescopic cylinder (4311) and can apply a downward force to the scraping rod (4312).

8. An agricultural field irrigation seepage control channel structure according to claim 5, wherein: The wheel surface of the moving wheel (42) is provided with anti-skid lines (421) in the circumferential direction.

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