Intelligent gate device for modern agricultural production irrigation

Abstract

The application relates to the field of water conservancy equipment, in particular to an intelligent gate device for modern agricultural production irrigation, which comprises a door frame, a gate body, an adjusting mechanism and an opening and closing mechanism, a slidable control plate is arranged in the gate body, the swing center of the gate body and the control plate on the shaft seat is relatively eccentric, a scraper is arranged at the lower end of the gate body, and the adjusting mechanism comprises a water level sensing plate and a first transmission assembly. When the water level sensing plate senses that the water level rises, the first transmission assembly drives the inclined shaft arranged on the control plate to move, so that the control plate moves upwards, the gate body can be opened to a larger angle, so that the gate body adjusts the opening angle according to the size of the upstream water level, the larger the upstream water level, the larger the opening angle of the gate body, and the water flow is automatically adjusted, meanwhile, the scraper can automatically clean the silt directly below the gate body when the gate body is closed, and the sealing effect of the gate body is improved.

Description

Technical Field

[0001] This invention relates to the field of water conservancy equipment, specifically to an intelligent gate device for modern agricultural irrigation. Background Technology

[0002] In agricultural irrigation, insufficient rainfall or uneven distribution often prevents water resources from meeting the crop's water requirements. Only by constructing water conservancy projects can water flow be controlled and water volume regulated and distributed to meet the crop's water needs. The water conservancy projects widely used in agricultural irrigation are reservoirs and irrigation canals. In irrigation canals, gates are generally installed to intercept water flow, control water levels, and regulate flow.

[0003] Existing gate technologies often fail to automatically adjust flow rates based on water source conditions. Furthermore, because the water flow contains silt and gravel, silt and gravel accumulate on the gate base when it is open. When the gate is closed, friction between the gate and the silt at the bottom of the channel damages the waterstop strip, thus affecting the gate's sealing performance. Summary of the Invention

[0004] In view of at least one deficiency of the prior art, the present invention proposes an intelligent gate device for irrigation in modern agricultural production to solve the problems of existing gates being unable to automatically adjust the flow rate and having poor sealing.

[0005] The present invention provides a modern agricultural irrigation intelligent gate device with the following technical solution: including a gate frame, a gate body, an adjustment mechanism and an opening and closing mechanism; the gate frame is mounted on the upper surface of the left and right side walls of the water channel, and the left and right sides inside the gate frame are equipped with bearing seats, the center of the bearing seat is provided with a vertically extending waist-shaped hole, and the lower part is provided with an arc groove concentric with it;

[0006] The top surface of the gate body is tangent to the top plate of the gantry. Eccentric shaft heads are provided on the left and right sides of the upper end of the gate body. The eccentric shaft heads are offset towards the downstream side relative to the center of the gate body. The eccentric shaft heads are rotatable and can slide up and down in the waist-shaped hole. A control plate is slidably inserted into the center of the gate body along its height direction. The lower end of the control plate is stopped by the gate body. The left and right ends of the control plate are provided with inclined shafts that can slide left and right. The inclined shaft includes a connected shaft body and a wedge plate. The shaft body is slidably set in the arc groove. The wedge plate is located inside the control plate and cooperates with the wedge surface of the control plate. When the inclined shaft moves outward in the left and right direction, the control plate is allowed to move upward.

[0007] The regulating mechanism includes a water level sensing plate and a first transmission assembly. The water level sensing plate is installed at the bottom of the water channel and located upstream of the gate body via an elastic element. When the water level in the water channel rises, the water level sensing plate moves downward under the action of water pressure. The first transmission assembly is a transmission connection between the water level sensing plate and the inclined shaft. The first transmission assembly is used to convert the movement of the water level sensing plate into the movement of the inclined shaft, so as to change the movable amount of the control plate and thereby adjust the opening angle of the gate body.

[0008] The opening and closing mechanism is used to swing the gate body downstream to open it by a preset angle or to close it in the opposite direction, and allows the opening angle of the gate body to increase after the gate body has opened by the preset angle.

[0009] Optionally, the first transmission assembly includes a rack, a rotating wheel, a rocker arm, a transmission rod, a screw sleeve, a first screw, and a connecting rod. The rotating wheel is rotatably mounted on the gantry around a left-right extending axis, and the wheel axle of the rotating wheel is provided with teeth. The rack can move up and down and is connected to the water level sensing plate and meshes with the wheel axle of the rotating wheel. The first screw is rotatably mounted at the center of the bearing seat and is rotatably mounted left and right. The screw sleeve is fitted on the outside of the first screw and screwed to the first screw, and the outer peripheral wall of the screw sleeve is provided with teeth. The upper end of the connecting rod is connected to the first screw, and the lower end is connected to the shaft of the inclined plane shaft. The connecting rod moves synchronously with the first screw and the inclined plane shaft. The transmission rod is slidably mounted on the gantry and one end meshes with the screw sleeve. The upper end of the rocker arm is slidably mounted on the transmission rod and the lower end of the rocker arm is eccentrically rotatably connected to the rotating wheel, and the eccentric point is located on the side of the rotating wheel center closer to the upstream direction.

[0010] Optionally, the bearing seat includes a base plate and a ring frame connected to each other, an oblong hole and an arc groove are provided on the base plate, a mandrel is provided at the center of the ring frame, a square hole is provided inside the mandrel, and a first screw is slidably inserted into the square hole.

[0011] Optionally, the opening and closing mechanism includes an opening and closing spring, a sliding plate, a second screw, a motor, and a second transmission assembly;

[0012] The second screw is rotatably mounted on the gantry and extends in the front-to-back direction. The second screw is located on the downstream side of the gate body. The sliding plate is slidably mounted on the gantry and screwed to the second screw. The motor is connected to the second screw via the second transmission assembly to drive the second screw to rotate.

[0013] Optionally, the second transmission assembly includes a first opening and closing gear and a second opening and closing gear. The first opening and closing gear is coaxially and fixedly connected to the second screw, and the second opening and closing gear is connected to the output shaft of the motor. The first opening and closing gear and the second opening and closing gear mesh.

[0014] Optionally, the gate body has a water-blocking part and a mounting part located at the top of the water-blocking part;

[0015] The gate body is hollow so that the water-blocking part of the gate body has a first plate and a second plate. The first plate is located on the upstream side and the second plate is located on the downstream side. The control plate is slidably set on the second plate. There is a water passage cavity with an open lower end between the control plate and the first plate. Several water-permeable holes connected to the water passage cavity are provided in the middle of the first plate.

[0016] The lower end of the first plate is fitted with a scraper that can slide up and down. The scraper and the control plate are connected by a third transmission assembly. The third transmission assembly is used to drive the scraper to slide down by relying on the relative movement between the gate body and the control plate when the gate body is closed.

[0017] Optionally, the third transmission component includes a connecting gear and a toothed plate. The toothed plate is slidably disposed on the inner side of the first plate. The toothed plate is connected to the upper end of the scraper through a buffer spring. The control plate is provided with teeth on the side opposite to the toothed plate.

[0018] The connecting gear is rotatably mounted on the left and right side walls of the gate body and located in the water passage cavity. The connecting gear is clamped between the control plate and the toothed plate and meshes with both the control plate and the toothed plate.

[0019] Optionally, the mounting part and the water-blocking part are integrally formed and are cylindrical, with eccentric shaft heads located on the left and right sides of the mounting part and eccentrically positioned relative to the center of the mounting part towards the downstream side.

[0020] Optionally, both the gate body and the sliding plate are provided with hinge seats for mounting the opening and closing springs.

[0021] Optionally, a bracket is provided on the gantry, the motor is fixedly mounted on the bracket, and the second screw is rotatably mounted on the bracket.

[0022] The beneficial effects of this invention are as follows: The intelligent gate device for modern agricultural irrigation of this invention features a sliding control plate inside the gate body. The swing centers of the control plate and the gate body are relatively eccentric, so that the relative position of the control plate and the gate body determines the rotation angle of the gate body. Simultaneously, the control plate is controlled by an adjustment mechanism. When the water level sensing plate detects a rise in water level, the first transmission component drives the inclined shaft to move, thereby causing the control plate to move upwards. This allows the gate body to open at a larger angle, thus enabling the gate body to adjust its opening angle according to the upstream water level. The higher the upstream water level, the larger the opening angle of the gate body, thereby automatically regulating the water flow in the irrigation canal.

[0023] Furthermore, the gate body is equipped with a water passage cavity and a scraper at the bottom. When the gate body is closed, the relative movement between the gate body and the control plate causes the scraper to extend downwards, scraping the mud and sand at the bottom of the channel upstream. At the same time, the clean water from the upstream side of the channel enters the water passage cavity inside the gate body and flows out from the bottom of the water passage cavity, washing away the mud and sand in front of the scraper (downstream side). In this way, when the gate body is closed, it will automatically clean the mud and sand directly below it, and the mud and sand will not affect the sealing effect, thus improving the sealing reliability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the overall use of an intelligent gate device for irrigation in modern agricultural production according to the present invention;

[0026] Figure 2 for Figure 1 Another angle diagram;

[0027] Figure 3 for Figure 1 Partial sectional 3D view;

[0028] Figure 4 for Figure 3 Front view;

[0029] Figure 5 for Figure 4 Enlarged view of section I in the middle;

[0030] Figure 6 This is a schematic diagram of the overall structure of an intelligent gate device for irrigation in modern agricultural production according to the present invention (excluding the water channel);

[0031] Figure 7 This is a schematic diagram showing the connection between the gantry and the gate body in this invention;

[0032] Figure 8 This is a schematic diagram of the adjustment mechanism;

[0033] Figure 9 A schematic diagram of the gate body and its components;

[0034] Figure 10 for Figure 9 Enlarged view at point II;

[0035] Figure 11 for Figure 9 Sectional front view;

[0036] Figure 12 for Figure 11 Enlarged view at point III;

[0037] Figure 13 This is a schematic diagram showing the connection between the control board and the inclined plane shaft in this invention;

[0038] Figure 14 This is a schematic diagram of the structure of the bearing seat in this invention.

[0039] In the diagram: 100, Adjustment mechanism; 200, Opening and closing mechanism; 410, Water channel; 111, Water level sensing plate; 112, Rotary wheel; 113, Swing rod; 114, Transmission rod; 115, Screw sleeve; 116, First screw; 117, Connecting rod; 118, Inclined shaft; 121, Gantry; 122, Shaft seat; 119, Gear rack; 211, Motor; 212, Bracket; 213, First opening and closing gear; 214, Slide plate; 215, Opening and closing spring; 216, Second opening and closing gear; 217, Hinge seat; 218, Second screw; 311, Gate body; 312, Control panel; 321, Scraper; 322, Gear plate; 323, Buffer spring; 324, Connecting gear; 325, Water passage cavity; 1211, Square hole; 1212, Arc groove; 1223, Waist-shaped hole. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 14 As shown, an intelligent gate device for modern agricultural irrigation of the present invention is installed in an irrigation canal 410 to intercept and regulate the water in the canal 410. Specifically, it includes a gantry 121, a gate body 311, an adjusting mechanism 100, and an opening and closing mechanism 200. The gantry 121 is mounted on the upper surface of the left and right side walls (side walls in the width direction) of the canal 410. The left and right sides inside the gantry 121 are equipped with bearing seats 122. The bearing seats 122 have a vertically extending waist-shaped hole 1223 in the center and an arc groove 1212 concentric with it in the lower part.

[0042] The top surface of the gate body 311 is tangent to the top plate of the gantry 121. Eccentric shaft heads are provided on the left and right sides of the upper end of the gate body 311. The eccentric shaft heads are biased towards the downstream side relative to the center of the gate body 311. The eccentric shaft heads are rotatable and can slide up and down in the waist-shaped hole 1223. A control plate 312 is slidably inserted into the center of the gate body 311 along its height direction. The lower end of the control plate 312 is stopped by the gate body 311. The left and right ends of the control plate 312 are provided with inclined shafts 118 that can slide left and right. The inclined shaft 118 includes a connected shaft body and a wedge plate. The shaft body is slidably disposed in the arc groove 1212. The wedge plate is located inside the control plate 312 and cooperates with the wedge surface of the control plate 312. When the inclined shaft 118 moves outward in the left and right direction, the control plate 312 is allowed to move upward.

[0043] The regulating mechanism 100 includes a water level sensing plate 111 and a first transmission assembly. The water level sensing plate 111 is slidably mounted on the bottom of the water channel 410 via an elastic element and is located on the upstream side of the gate body 311. When the water level in the water channel 410 rises, the water level sensing plate 111 moves downward under the action of water pressure. The first transmission assembly is connected to the water level sensing plate 111 and the inclined shaft 118. The first transmission assembly is used to convert the movement of the water level sensing plate 111 into the movement of the inclined shaft 118, so as to change the movable amount of the control plate 312, thereby adjusting the opening angle of the gate body 311.

[0044] The opening and closing mechanism 200 is used to swing the gate body 311 downstream to open it by a preset angle or to close it in the opposite direction, and allows the opening angle of the gate body 311 to increase after the gate body 311 has opened by the preset angle.

[0045] To facilitate manufacturing and connection, the gate body 311 has a water-blocking part and a mounting part located at the top of the water-blocking part. The mounting part is integrally formed with the water-blocking part and is cylindrical. An eccentric shaft head is set in the mounting part and is eccentric relative to the center of the mounting part towards the downstream side.

[0046] like Figure 1 The water flows from back to front, and the arrow indicates the direction of the water flow. With the gate body 311 as the boundary, the area behind the gate body 311 is the upstream area, and the area in front of the gate body 311 is the downstream area.

[0047] When the opening and closing mechanism 200 drives the gate body 311 to open, the eccentric shaft of the gate body 311 slides in the oblong hole 1223, and the control plate 312 slides in the arc groove 1212 via the inclined shaft 118. The swing centers of the gate body 311 and the control plate 312 are relatively eccentric. When the gate body 311 opens, the distance from its bottom to the center of the shaft seat 122 gradually decreases, while the distance from the bottom of the control plate 312 to the center of the shaft seat 122 remains unchanged. As the gate body 311 opens, it gradually abuts against the bottom of the control plate 312. The gate body 311 flips to a certain extent and is then stopped by the control plate 312, preventing it from flipping further. The relative position of the control plate 312 and the gate body 311 determines the flipping angle of the gate body 311. Initially, the opening and closing mechanism 200 opens the gate body 311 to a preset angle, and allows the opening angle of the gate body 311 to continue to increase. The control plate 312 is controlled by the regulating mechanism 100. When the water level sensing plate 111 senses a rise in water level, the first transmission component drives the inclined shaft 118 to move, thereby causing the control plate 312 to move upward. The gate body 311 can open to a larger angle, so that the gate body 311 can adjust the opening angle according to the size of the upstream water level. The larger the upstream water level, the larger the opening angle of the gate body 311, thereby regulating the water flow in the water channel 410.

[0048] In a further embodiment, such as Figure 6 , 8 As shown, the first transmission assembly includes a rack 119, a rotating wheel 112, a rocker arm 113, a transmission rod 114, a threaded sleeve 115, a first screw 116, and a connecting rod 117. The rotating wheel 112 is rotatably mounted on the gantry 121 about a left-right extending axis, and the axle of the rotating wheel 112 is provided with teeth. The rack 119 can move up and down, and the rack 119 is connected to the water level sensing plate 111 and meshes with the axle of the rotating wheel 112. The first screw 116 is movably mounted at the center of the bearing seat 122, and the threaded sleeve 115 is sleeved on the outside of the first screw 116 and connects to the first screw 117. A screw 116 is screwed in, and the outer peripheral wall of the screw sleeve 115 is provided with teeth; the upper end of the connecting rod 117 is connected to the first screw 116, and the lower end is connected to the shaft of the inclined shaft 118. The connecting rod 117 moves synchronously with the first screw 116 and the inclined shaft 118. The transmission rod 114 is slidably mounted on the gantry 121 and one end is engaged with the screw sleeve 115. The upper end of the swing rod 113 is slidably mounted on the transmission rod 114. The lower end of the swing rod 113 is eccentrically connected to the rotating wheel 112, and the eccentric point is located on the side of the center of the rotating wheel 112 closer to the upstream direction.

[0049] like Figure 14As shown, the bearing seat 122 includes a base plate and a ring frame connected to each other. A waist-shaped hole 1223 and an arc groove 1212 are provided on the base plate. A mandrel is provided at the center of the ring frame. A square hole 1211 is provided inside the mandrel. The first screw 116 is slidably disposed in the square hole 1211 to achieve circumferential anti-rotation of the first screw 116.

[0050] When the upstream water level rises, the water level sensing plate 111 moves downward under the action of water pressure. When the water level sensing plate 111 moves downward, it drives the rotating wheel 112 to rotate clockwise. The rotating wheel 112 drives the swing rod 113 to move upward. The swing rod 113 and the transmission rod 114 can be slidably connected through the T-slot. When the swing rod 113 moves upward, it drives the transmission rod 114 to move upward. When the transmission rod 114 moves upward, it drives the nut to rotate. The rotation of the nut pushes the first screw 116 to extend away from the shaft seat 122. The extension of the first screw 116 drives the connecting rod 117. The connecting rod 117 drives the inclined shaft 118 to extend. When the inclined shaft 118 extends, the control plate 312 has room to move upward, and the gate body 311 can open at a larger angle when it is opened. It should be noted that during the opening process of the gate body 311, under the same deflection angle, the gap between the lower end of the gate body 311 and the bottom of the water channel 410 gradually increases, that is, the opening degree of the gate gradually increases. By eccentrically setting the swing rod 113 and the rotating wheel 112, and the eccentric direction is opposite to the eccentric direction of the gate's eccentric shaft head, the opening degree of the gate body 311 can be compensated, so that the gate body 311 opens evenly.

[0051] In a further embodiment, such as Figure 2 , 3 As shown in Figure 4, the opening and closing mechanism 200 includes an opening and closing spring 215, a sliding plate 214, a second screw 218, a motor 211, and a second transmission assembly.

[0052] The second screw 218 is rotatably mounted on the gantry 121 and extends in the front-to-back direction (the length direction of the water channel 410 or the direction of water flow). The second screw 218 is located on the downstream side of the gate body 311. The sliding plate 214 is slidably mounted on the gantry 121 and screwed to the second screw 218. The motor 211 is connected to the second screw 218 through the second transmission assembly to drive the second screw 218 to rotate.

[0053] The second transmission component is a gear transmission. Specifically, the second transmission component includes a first opening and closing gear 213 and a second opening and closing gear 216. The first opening and closing gear 213 is coaxially and fixedly connected to the second screw 218, and the second opening and closing gear 216 is connected to the output shaft of the motor 211. The first opening and closing gear 213 and the second opening and closing gear 216 mesh.

[0054] A bracket 212 is provided on the gantry 121, and the motor 211 is fixedly installed on the bracket 212. The second screw 218 is rotatably installed on the bracket 212. A hinge seat 217 is provided on both the gate body 311 and the sliding plate 214 for installing the opening and closing spring 215.

[0055] When the gate body 311 needs to be opened, the motor 211 is started. The motor 211 drives the second screw 218 to rotate via the first opening and closing gear 213 and the second opening and closing gear 216. The second screw 218 drives the sliding plate 214 to slide away from the gate body 311 through a threaded connection. The opening and closing spring 215 will be stretched, exerting an upward force on the gate body 311. The gate body 311 flips open under the tension of the opening and closing spring 215. When the sliding plate 214 moves to the extreme position away from the gate body 311, it stops moving. At this time, the gate body 311 opens to a preset angle, and the opening and closing spring 215 is in a stored state. During the flipping process of the gate body 311, its mounting part is slidably connected to the boss under the top plate of the gantry 121, and is always in contact with the boss under the top plate of the gantry 121 under the action of the opening and closing spring 215.

[0056] When the gate body 311 needs to be closed, the reverse motor 211 moves the slide plate 214 closer to the side of the gate body 311, compressing the opening and closing spring 215, causing the gate body 311 to close. When the gate body 311 is closed, the distance between its lower end and the center of the shaft seat 122 will gradually increase, and the gate body 311 will be stuck to the bottom of the channel and cannot move, which can prevent the gate body 311 from deflecting excessively when closing.

[0057] In a further embodiment, such as Figure 9 , 10 As shown in Figures 11 and 12, the gate body 311 is hollow inside, so that the water-blocking part of the gate body 311 has a first plate and a second plate. The first plate is located on the upstream side and the second plate is located on the downstream side. The control plate 312 is slidably disposed on the second plate. There is a water passage cavity 325 with an open lower end between the control plate 312 and the first plate. Several water-permeable holes connected to the water passage cavity 325 are provided in the middle of the first plate.

[0058] The lower end of the first plate is fitted with a scraper 321 that can slide up and down. The scraper 321 and the control plate 312 are connected by a third transmission assembly. The third transmission assembly is used to drive the scraper 321 to slide down by relying on the relative movement between the gate body 311 and the control plate 312 when the gate body 311 is closed.

[0059] The third transmission assembly includes a connecting gear 324 and a toothed plate 322. The toothed plate 322 is slidably disposed on the inner side of the first plate. The toothed plate 322 is connected to the upper end of the scraper 321 through a buffer spring 323. The control plate 312 is provided with teeth on the side opposite to the toothed plate 322.

[0060] The connecting gear 324 is rotatably disposed on the left and right side walls of the gate body 311 and located in the water passage cavity 325. The connecting gear 324 is sandwiched between the control plate 312 and the toothed plate 322 and meshes with both the control plate 312 and the toothed plate 322.

[0061] During the closing process of the gate body 311, the control plate 312 will not slide downward under the control of the water level (the upstream water level is in a rising state when the gate body 311 is closed). However, due to the eccentric rotation of the gate body 311, the distance between its bottom and the center of the shaft seat 122 gradually increases, and the gate body 311 and the control plate 312 slide relative to each other, and the control plate 312 moves upward relative to the gate body 311. When the control plate 312 slides relative to the gate body 311, the control plate 312 drives the toothed plate 322 to move downward through the connecting gear 324. The toothed plate 322 compresses the buffer spring 323, which in turn pushes the scraper 321 downward. The scraper 321 contacts the bottom of the water channel 410 before the lower end of the gate body 311, scraping the mud and sand at the bottom of the water channel 410 upstream. At the same time, the clear water in the upper part of the water channel 410 enters the water passage cavity 325 through the water permeable hole on the gate body 311 and flows out from the bottom of the water passage cavity 325, washing away the mud and sand downstream of the scraper 321 until the gate body 311 is completely closed, and the bottom is in contact with the bottom of the channel to complete the seal and cut off the water flow. With this setting, the gate body 311 can automatically clean the mud and sand at the bottom of the water channel 410 when it is closed, avoiding the mud and sand from damaging the waterstop at the bottom of the gate body 311 when it is closed, thus affecting the sealing effect of the gate body 311.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart gate device for irrigation in modern agricultural production, characterized in that: It includes a gantry, a gate body, an adjustment mechanism, and an opening and closing mechanism; the gantry is mounted on the upper surface of the left and right side walls of the canal, and the left and right sides inside the gantry are equipped with bearing seats, the center of the bearing seat is provided with a vertically extending waist-shaped hole, and the lower part is provided with an arc groove concentric with it; The top surface of the gate body is tangent to the top plate of the gantry. Eccentric shaft heads are provided on the left and right sides of the upper end of the gate body. The eccentric shaft heads are offset towards the downstream side relative to the center of the gate body. The eccentric shaft heads are rotatable and can slide up and down in the waist-shaped hole. A control plate is slidably inserted into the center of the gate body along its height direction. The lower end of the control plate is stopped by the gate body. The left and right ends of the control plate are provided with inclined shafts that can slide left and right. The inclined shaft includes a connected shaft body and a wedge plate. The shaft body is slidably set in the arc groove. The wedge plate is located inside the control plate and cooperates with the wedge surface of the control plate. When the inclined shaft moves outward in the left and right direction, the control plate is allowed to move upward. The regulating mechanism includes a water level sensing plate and a first transmission assembly. The water level sensing plate is installed at the bottom of the water channel and located upstream of the gate body via an elastic element. When the water level in the water channel rises, the water level sensing plate moves downward under the action of water pressure. The first transmission assembly is a transmission connection between the water level sensing plate and the inclined shaft. The first transmission assembly is used to convert the movement of the water level sensing plate into the movement of the inclined shaft, so as to change the movable amount of the control plate and thereby adjust the opening angle of the gate body. The opening and closing mechanism is used to swing the gate body downstream to open it by a preset angle or to close it in the opposite direction, and allows the opening angle of the gate body to increase after the gate body has opened by the preset angle. The first transmission assembly includes a rack, a rotating wheel, a rocker arm, a transmission rod, a screw sleeve, a first screw, and a connecting rod. The rotating wheel is rotatably mounted on the gantry around a left-right extending axis, and the wheel axle of the rotating wheel is provided with teeth. The rack can move up and down and is connected to the water level sensing plate and meshes with the wheel axle of the rotating wheel. The first screw is rotatably mounted at the center of the bearing seat and is rotatably mounted left and right. The screw sleeve is fitted on the outside of the first screw and screwed to the first screw. The outer peripheral wall of the screw sleeve is provided with teeth. The upper end of the connecting rod is connected to the first screw, and the lower end is connected to the shaft of the inclined plane shaft. The connecting rod moves synchronously with the first screw and the inclined plane shaft. The transmission rod is slidably mounted on the gantry and one end meshes with the screw sleeve. The upper end of the rocker arm is slidably mounted on the transmission rod and the lower end of the rocker arm is eccentrically rotatably connected to the rotating wheel, and the eccentric point is located on the side of the rotating wheel center closer to the upstream direction.

2. The intelligent gate device for modern agricultural irrigation according to claim 1, characterized in that: The bearing seat includes a base plate and a ring frame connected to each other. An oblong hole and an arc groove are provided on the base plate. A mandrel is provided at the center of the ring frame. A square hole is provided inside the mandrel. A first screw is slidably inserted into the square hole.

3. The intelligent gate device for modern agricultural irrigation according to claim 1, characterized in that: The opening and closing mechanism includes an opening and closing spring, a sliding plate, a second screw, a motor, and a second transmission assembly; The second screw is rotatably mounted on the gantry and extends in the front-to-back direction. The second screw is located on the downstream side of the gate body. The sliding plate is slidably mounted on the gantry and screwed to the second screw. The motor is connected to the second screw via the second transmission assembly to drive the second screw to rotate.

4. The intelligent gate device for modern agricultural irrigation according to claim 3, characterized in that: The second transmission assembly includes a first opening and closing gear and a second opening and closing gear. The first opening and closing gear is coaxially and fixedly connected to the second screw, and the second opening and closing gear is connected to the output shaft of the motor. The first opening and closing gear and the second opening and closing gear mesh.

5. The intelligent gate device for modern agricultural irrigation according to claim 1, characterized in that: The gate body has a water-blocking part and a mounting part located at the top of the water-blocking part; The gate body is hollow so that the water-blocking part of the gate body has a first plate and a second plate. The first plate is located on the upstream side and the second plate is located on the downstream side. The control plate is slidably set on the second plate. There is a water passage cavity with an open lower end between the control plate and the first plate. Several water-permeable holes connected to the water passage cavity are provided in the middle of the first plate. The lower end of the first plate is fitted with a scraper that can slide up and down. The scraper and the control plate are connected by a third transmission assembly. The third transmission assembly is used to drive the scraper to slide down by relying on the relative movement between the gate body and the control plate when the gate body is closed.

6. The intelligent gate device for modern agricultural irrigation according to claim 5, characterized in that: The third transmission component includes a connecting gear and a toothed plate. The toothed plate is slidably disposed on the inner side of the first plate. The toothed plate is connected to the upper end of the scraper through a buffer spring. The control plate is provided with teeth on the side opposite to the toothed plate. The connecting gear is rotatably mounted on the left and right side walls of the gate body and located in the water passage cavity. The connecting gear is clamped between the control plate and the toothed plate and meshes with both the control plate and the toothed plate.

7. The intelligent gate device for modern agricultural irrigation according to claim 5, characterized in that: The mounting section and the water-blocking section are integrally formed and are cylindrical. The eccentric shaft head is located on the left and right sides of the mounting section and is eccentric relative to the center of the mounting section towards the downstream side.

8. The intelligent gate device for modern agricultural irrigation according to claim 3, characterized in that: Both the gate body and the sliding plate are equipped with hinge seats for installing the opening and closing springs.

9. The intelligent gate device for modern agricultural irrigation according to claim 3, characterized in that: A bracket is installed on the gantry, the motor is fixedly mounted on the bracket, and the second screw is rotatably mounted on the bracket.

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