Flow dividing mechanism for irrigation and water conservancy irrigation

Abstract

The utility model relates to the technical field of irrigation and water conservancy irrigation, in particular to a flow dividing mechanism for irrigation and water conservancy irrigation, which can divide water into specific branch pipe channels and convey the water to a target farmland, improves the accuracy of irrigation and is good in practicability. Comprising a cross well, a water inlet canal, a rear water outlet canal and two side water outlet canals. The lower portion of the main flashboard extends into the rear water outlet channel, the upper middle portion of the first auxiliary flashboard is hinged to the two sides of a water flowing opening of the main flashboard, and the rear ends of the two second auxiliary flashboards are hinged to the left side and the right side of the main flashboard respectively. The rear ends of the two second driving components are movably connected with the upper portion of the first auxiliary flashboard, the front ends of the two second driving components are movably connected with the two second auxiliary flashboards respectively, a limiting structure is arranged between the first auxiliary flashboard and the main flashboard, and after the two second auxiliary flashboards seal the two side water outlet channels respectively, the limiting structure releases limiting of the first auxiliary flashboard and the main flashboard.

Description

Technical Field

[0001] The utility model relates to the technical field of farmland water conservancy irrigation, in particular to a farmland water conservancy irrigation diversion mechanism. Background Art

[0002] In farmland water conservancy irrigation projects, water is usually conveyed through drainage pipelines, and a diversion mechanism is set on the pipelines to convey water to the branched pipelines. A variety of farmland water conservancy irrigation diversion mechanisms have been proposed in the prior art. For example, a farmland water conservancy irrigation diversion device proposed in the Chinese utility model patent with the publication number CN220557081U can operate normally when there is water. When there is no water, it automatically closes and returns to the original position; when water comes, the valve body does not automatically open and the water volume can be adjusted arbitrarily through the valve body handle; at the same time, the utility model is completed without using electrical control and is completed through a simple mechanical mechanism.

[0003] However, when water comes in the pipeline in the above prior art, all the valve cores are opened and water is conveyed to all the branch water pipes. Therefore, it is not convenient to divert the water in the pipeline to the specific branch pipelines selected, so that the irrigation water can be conveyed to the target farmland, resulting in low irrigation accuracy. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a farmland water conservancy irrigation diversion mechanism that can divert water to specific branch pipelines, convey it to the target farmland, improve the irrigation accuracy, and has good practicability.

[0005] A water diversion mechanism for farmland water conservancy irrigation of the present utility model includes a cross well, an inlet channel, a rear outlet channel and two side outlet channels. The inlet channel is arranged in the water incoming direction of the cross well. The rear outlet channel is connected to the cross well and is opposite to the inlet channel. The two side outlet channels are respectively installed on the left and right sides of the cross well relatively. It also includes a main gate, a first driving component, a first auxiliary gate, two second auxiliary gates and two second driving components. The middle of the main gate is hinged to the input end of the rear outlet channel. The lower part of the main gate extends into the rear outlet channel. One end of the first driving component is rotatably connected to the upper part of the main gate, and the other end of the first driving component is rotatably connected to the rear outlet channel. A water flow port is arranged at the lower part of the main gate. The upper middle part of the first auxiliary gate is hinged to both sides of the water flow port of the main gate. The lower part of the first auxiliary gate closes the water flow port of the main gate. The rear ends of the two second auxiliary gates are respectively hinged to the left and right sides of the main gate. The two second auxiliary gates respectively close the input ends of the two side outlet channels. The rear ends of the two second driving components are movably connected to the upper part of the first auxiliary gate, and the front ends of the two second driving components are respectively movably connected to the two second auxiliary gates. A limiting structure is arranged between the first auxiliary gate and the main gate. After the two second auxiliary gates respectively close the two side outlet channels, the limiting structure releases the limit between the first auxiliary gate and the main gate. When water conveyance and irrigation are not needed, the first driving component extends to turn the main gate upright, so that the lower part of the main gate and the first auxiliary gate extend into the input end of the rear outlet channel. The two second driving components extend to turn the two second auxiliary gates open to close the input ends of the two side outlet channels. At this time, the rear outlet channel and the two side outlet channels are all closed. At this time, the limiting structure releases the limit between the first auxiliary gate and the main gate. When water needs to be conveyed to the rear outlet channel, the two second driving components continue to extend to push the upper part of the first auxiliary gate backward of the rear outlet channel, so that the lower part of the first auxiliary gate turns into the cross well to open the water flow port of the main gate, so that the irrigation water is conveyed to the target farmland through the inlet channel, the cross well and the rear outlet channel. When water needs to be conveyed to one side outlet channel, the corresponding second driving component contracts to turn the second auxiliary gate into the cross well to open the side outlet channel, so that the irrigation water is conveyed to the target farmland through the inlet channel, the cross well and the side outlet channel. When water needs to be conveyed to the two side outlet channels, the two second driving components contract simultaneously, so that the two second auxiliary gates turn into the cross well and align to form a triangular water guiding structure, so that the two second auxiliary gates guide the irrigation water to the two side outlet channels, and the impact force during water conveyance can be reduced. When water needs to be conveyed to one side outlet channel and the rear outlet channel, after the two second driving components extend synchronously to turn the first auxiliary gate open, the corresponding second driving component contracts to turn the second auxiliary gate into the cross well to open the side outlet channel, so that the irrigation water is conveyed to the target farmland through the inlet channel, the cross well, the side outlet channel and the rear outlet channel. When water needs to be conveyed to the rear outlet channel and the two side outlet channels simultaneously, the two second driving components contract to turn the two second auxiliary gates into the cross well, and the first driving component contracts to turn the lower part of the main gate into the cross well to open, so that the irrigation water is conveyed to the target farmland through the inlet channel, the cross well, the rear outlet channel and the two side outlet channels.It can divert the water in the pipe channel to the selected specific branch pipe channels, so that the irrigation water can be transported to the target farmland, improving the accuracy of irrigation and having good practicability.

[0006] Preferably, the first driving component and the second driving component are one or two of an electric push rod, a hydraulic cylinder or a cylinder.

[0007] Preferably, it further includes a blocking block. The blocking block is arranged at the lower part of the rear end face of the main gate plate. The blocking block limits and blocks the lower part of the first auxiliary gate plate; when the first auxiliary gate plate closes the water outlet of the main gate plate, the blocking block limits and blocks the lower part of the first auxiliary gate plate, improving the stability of the first auxiliary gate plate.

[0008] Preferably, the limiting structure includes two strip plates and two push plates. The two strip plates are installed at the upper end of the water outlet of the main gate plate. The two strip plates are respectively aligned with the two second driving components. The two push plates are respectively installed at the rear ends of the two second driving components. The rear end faces of the two push plates are in sliding contact with the front end faces of the two strip plates respectively. And when the two second auxiliary gate plates close the two side water channels, the two push plates are separated from the two strip plates; when the two second driving components expand and contract, they push the two second auxiliary gate plates to rotate. At the same time, the two second driving components also rotate, so that the two second driving components respectively drive the two push plates to change positions on the two strip plates. When the two second auxiliary gate plates close the two side water channels, the two second driving components drive the two push plates to be separated from the strip plates, thereby releasing the limit between the first auxiliary gate plate and the main gate plate. The structure is simple and the limiting effect is stable.

[0009] Preferably, it further includes a plurality of sealing strips. The lower edge and the left and right edges of the first auxiliary gate plate are provided with sealing strips. The lower edge and the left and right edges of the two second auxiliary gate plates are both provided with sealing strips; by setting a plurality of sealing strips, the sealing performance between the first auxiliary gate plate and the water outlet of the main gate plate is improved, and the sealing performance between the two second auxiliary gate plates and the side water channels is improved.

[0010] Preferably, it further includes a plurality of water filling grooves and a plurality of water inlet holes. The first auxiliary gate plate and the two second auxiliary gate plates are both provided with water filling grooves. The plurality of water filling grooves are respectively located inside the plurality of sealing strips. A plurality of water inlet holes are provided on the side walls of the first auxiliary gate plate and the two second auxiliary gate plates facing the cross-shaped well. The plurality of water inlet holes are respectively communicated with the plurality of water filling grooves; the irrigation water in the cross-shaped well enters the plurality of water filling grooves through the plurality of water inlet holes, so that the water pressure pushes the plurality of sealing strips towards the outside of the first auxiliary gate plate and the two second auxiliary gate plates, increasing the pressing force between the plurality of sealing strips and the inner walls of the cross-shaped well, the rear water channel and the two side water channels, and improving the sealing effect.

[0011] Preferably, it further includes a liquid level rod and a liquid level float. A vertical groove is provided on the inner wall of the water inlet channel. The liquid level rod is vertically installed in the groove, and the liquid level float is slidably installed on the liquid level rod. The liquid level float floats on the liquid surface of the irrigation water in the water inlet channel. The liquid level rod detects the position of the liquid level float to detect the liquid level of the irrigation water. When the liquid level is too high, the water flow into the water inlet channel is reduced to avoid water running off due to excessive flow, improving practicability.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: It can divert the water in the pipe channel to the specific branch pipe channels selected, so that the irrigation water can be transported to the target farmland, improving the accuracy of irrigation and having good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the state where the rear water outlet channel and the side water outlet channel of the present utility model are all closed;

[0014] Figure 2 is a schematic structural diagram of the state where the rear water outlet channel of the present utility model is open;

[0015] Figure 3 is a rear view schematic structural diagram of the state where the rear water outlet channel of the present utility model is open;

[0016] Figure 4 is a schematic structural diagram of the state where the rear water outlet channel and the side water outlet channel of the present utility model are all open;

[0017] Figure 5 is a schematic structural diagram of structures such as the main gate plate, the first driving component, the first auxiliary gate plate, the second auxiliary gate plate, and the second driving component;

[0018] Figure 6 is a schematic structural diagram of structures such as the main gate plate, the first auxiliary gate plate, and the limit structure;

[0019] Figure 7 is a schematic structural diagram of structures such as the main gate plate, the first auxiliary gate plate, and the blocking block.

[0020] Reference numerals in the drawings: 1, cross well; 2, water inlet channel; 3, rear water outlet channel; 4, side water outlet channel; 5, main gate plate; 6, first driving component; 7, first auxiliary gate plate; 8, second auxiliary gate plate; 9, second driving component; 10, blocking block; 11, strip board; 12, push plate; 13, sealing strip; 14, irrigation tank; 15, water inlet hole; 17, liquid level rod; 18, liquid level float. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0022] Embodiment 1

[0023] As Figures 1 to 7 shown, a farmland water conservancy irrigation diversion mechanism includes a cross well 1, a water inlet channel 2, a rear water outlet channel 3, and two side water outlet channels 4. The water inlet channel 2 is arranged in the water incoming direction of the cross well 1. The rear water outlet channel 3 is connected to the cross well 1 and is opposite to the water inlet channel 2. The two side water outlet channels 4 are respectively installed oppositely on the left and right sides of the cross well 1. It further includes a main gate 5, a first driving component 6, a first auxiliary gate 7, two second auxiliary gates 8, and two second driving components 9. The middle of the main gate 5 is hinged to the input end of the rear water outlet channel 3. The lower part of the main gate 5 extends into the rear water outlet channel 3. One end of the first driving component 6 is rotatably connected to the upper part of the main gate 5, and the other end of the first driving component 6 is rotatably connected to the rear water outlet channel 3. A water flow port is arranged at the lower part of the main gate 5. The upper middle part of the first auxiliary gate 7 is hinged to both sides of the water flow port of the main gate 5. The lower part of the first auxiliary gate 7 closes the water flow port of the main gate 5. The rear ends of the two second auxiliary gates 8 are respectively hinged to the left and right sides of the main gate 5. The two second auxiliary gates 8 respectively close the input ends of the two side water outlet channels 4. The rear ends of the two second driving components 9 are movably connected to the upper part of the first auxiliary gate 7, and the front ends of the two second driving components 9 are respectively movably connected to the two second auxiliary gates 8. A limiting structure is arranged between the first auxiliary gate 7 and the main gate 5. After the two second auxiliary gates 8 respectively close the two side water outlet channels 4, the limiting structure releases the limit between the first auxiliary gate 7 and the main gate 5. The first driving component 6 and the second driving component 9 are one or two of an electric push rod, a hydraulic cylinder, or a cylinder. It further includes a blocking block 10. The blocking block 10 is arranged at the lower part of the rear end face of the main gate 5. The blocking block 10 limits and blocks the lower part of the first auxiliary gate 7. It further includes a liquid level rod 17 and a liquid level float 18. A vertical groove is arranged on the inner wall of the water inlet channel 2. The liquid level rod 17 is vertically installed in the groove, and the liquid level float 18 is slidably installed on the liquid level rod 17.

[0024] The liquid level float 18 floats on the liquid surface of the irrigation water in the water inlet channel 2. The liquid level rod 17 detects the position of the liquid level float 18 to detect the liquid level of the irrigation water. When the liquid level is too high, the water flow into the water inlet channel 2 is reduced to avoid water running away due to excessive flow. When water conveyance for irrigation is not required, the first driving component 6 extends to turn the main gate 5 upright, so that the lower part of the main gate 5 and the first auxiliary gate 7 extend into the input end of the rear water outlet channel 3. The blocking block 10 limits and blocks the lower part of the first auxiliary gate 7. The two second driving components 9 extend to turn the two second auxiliary gates 8 open to close the input ends of the two side water outlet channels 4. At this time, the rear water outlet channel 3 and the two side water outlet channels 4 are all blocked. At this time, the limiting structure releases the limit on the first auxiliary gate 7 and the main gate 5. When water needs to be conveyed to the rear water outlet channel 3, the two second driving components 9 continue to extend to push the upper part of the first auxiliary gate 7 backward behind the rear water outlet channel 3, so that the lower part of the first auxiliary gate 7 turns towards the cross well 1 to open the water flowing port of the main gate 5, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1 and the rear water outlet channel 3; when water needs to be conveyed to one side water outlet channel 4, the corresponding second driving component 9 contracts to turn the second auxiliary gate 8 towards the cross well 1 to open the side water outlet channel 4, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1 and the side water outlet channel 4; when water needs to be conveyed to the two side water outlet channels 4, the two second driving components 9 contract simultaneously, so that the two second auxiliary gates 8 turn towards the cross well 1 and align to form a triangular water guiding structure, so that the two second auxiliary gates 8 guide the irrigation water to the two side water outlet channels 4, which can reduce the impact force during water conveyance; when water needs to be conveyed to one side water outlet channel 4 and the rear water outlet channel 3, the two second driving components 9 extend synchronously to turn the first auxiliary gate 7 open, and then the corresponding second driving component 9 contracts to turn the second auxiliary gate 8 towards the cross well 1 to open the side water outlet channel 4, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1, the side water outlet channel 4 and the rear water outlet channel 3; when water needs to be conveyed to the rear water outlet channel 3 and the two side water outlet channels 4 simultaneously, the two second driving components 9 contract to turn the two second auxiliary gates 8 towards the cross well 1, and the first driving component 6 contracts to turn the lower part of the main gate 5 towards the cross well 1 to open it, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1, the rear water outlet channel 3 and the two side water outlet channels 4; it can divert the water in the pipe channel to the selected specific branch pipe channels, so that the irrigation water is conveyed to the target farmland, improving the accuracy of irrigation.

[0025] Embodiment 2

[0026] Such as Figure 5 And Figure 6As shown, on the basis of Embodiment 1, the limiting structure includes two strip plates 11 and two push plates 12. The two strip plates 11 are installed at the upper end of the water outlet of the main gate 5. The two strip plates 11 are respectively aligned with the two driving components II 9. The two push plates 12 are respectively installed at the rear ends of the two driving components II 9. The rear end faces of the two push plates 12 are in sliding contact with the front end faces of the two strip plates 11, and when the two secondary gate plates II 8 close the two side water channels 4, the two push plates 12 are separated from the two strip plates 11.

[0027] When the two driving components II 9 expand and contract, they push the two secondary gate plates II 8 to rotate. At the same time, the two driving components II 9 also rotate, so that the two driving components II 9 respectively drive the two push plates 12 to change positions on the two strip plates 11. When the two secondary gate plates II 8 close the two side water channels 4, the two driving components II 9 drive the two push plates 12 to separate from the strip plates 11, thereby releasing the limit between the secondary gate plate I 7 and the main gate 5.

[0028] Embodiment 3

[0029] As Figure 4 and Figure 5 shown, on the basis of Embodiment 1, it further includes a plurality of sealing strips 13. The lower edge and the left and right edges of the secondary gate plate I 7 are provided with sealing strips 13, and the lower edge and the left and right edges of the two secondary gate plates II 8 are both provided with sealing strips 13. It further includes a plurality of water filling grooves 14 and a plurality of water inlet holes 15. The secondary gate plate I 7 and the two secondary gate plates II 8 are both provided with water filling grooves 14. The plurality of water filling grooves 14 are respectively located inside the plurality of sealing strips 13. A plurality of water inlet holes 15 are provided on the side walls of the secondary gate plate I 7 and the two secondary gate plates II 8 facing the cross well 1, and the plurality of water inlet holes 15 are respectively communicated with the plurality of water filling grooves 14.

[0030] By providing a plurality of sealing strips 13, the sealing performance between the secondary gate plate I 7 and the water outlet of the main gate 5 is improved, and the sealing performance between the two secondary gate plates II 8 and the side water channels 4 is improved. The irrigation water in the cross well 1 enters the plurality of water filling grooves 14 through the plurality of water inlet holes 15, so that the water pressure pushes the plurality of sealing strips 13 towards the outside of the secondary gate plate I 7 and the two secondary gate plates II 8, increasing the pressing force between the plurality of sealing strips 13 and the inner walls of the cross well 1, the rear water channel 3 and the two side water channels 4, and improving the sealing effect.

[0031] As Figures 1 to 7As shown in the figure, a water diversion mechanism for farmland water conservancy irrigation of the present utility model, when working, first, when water conveyance for irrigation is not required, the first driving component 6 extends to turn the main gate plate 5 upright, so that the lower part of the main gate plate 5 and the first auxiliary gate plate 7 extend into the input end of the rear water outlet channel 3. The two second driving components 9 extend to turn the two second auxiliary gate plates 8 to open and seal the input ends of the two side water outlet channels 4. At this time, the rear water outlet channel 3 and the two side water outlet channels 4 are all sealed. At this time, the two push plates 12 are separated from the two strip plates 11 to release the limit on the first auxiliary gate plate 7 and the main gate plate 5. Then, when water needs to be conveyed to the rear water outlet channel 3, the two second driving components 9 continue to extend to push the upper part of the first auxiliary gate plate 7 backward behind the rear water outlet channel 3, so that the lower part of the first auxiliary gate plate 7 turns towards the cross well 1 to open the water flow port of the main gate plate 5, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1 and the rear water outlet channel 3; when water needs to be conveyed to one side water outlet channel 4, the corresponding second driving component 9 contracts to turn the second auxiliary gate plate 8 towards the cross well 1 to open the side water outlet channel 4, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1 and the side water outlet channel 4; when water needs to be conveyed to the two side water outlet channels 4, the two second driving components 9 contract simultaneously, so that the two second auxiliary gate plates 8 turn towards the cross well 1 and align to form a triangular water guiding structure, so that the two second auxiliary gate plates 8 guide the irrigation water to the two side water outlet channels 4, which can reduce the impact force during water conveyance; then, when water needs to be conveyed to one side water outlet channel 4 and the rear water outlet channel 3, the two second driving components 9 extend synchronously to turn the first auxiliary gate plate 7 to open, and then the corresponding second driving component 9 contracts to turn the second auxiliary gate plate 8 towards the cross well 1 to open the side water outlet channel 4, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1, the side water outlet channel 4 and the rear water outlet channel 3; when water needs to be conveyed to the rear water outlet channel 3 and the two side water outlet channels 4 simultaneously, the two second driving components 9 contract to turn the two second auxiliary gate plates 8 towards the cross well 1, and the first driving component 6 contracts to turn the lower part of the main gate plate 5 towards the cross well 1 to open, so that the irrigation water is conveyed to the target farmland through the water inlet channel 2, the cross well 1, the rear water outlet channel 3 and the two side water outlet channels 4; finally, the liquid level float 18 floats on the liquid surface of the irrigation water in the water inlet channel 2, and the liquid level rod 17 detects the position of the liquid level float 18 to detect the liquid level of the irrigation water. When the liquid level is too high, the water flow rate of the water inlet channel 2 is reduced to avoid water running away due to excessive flow rate.

[0032] The main functions achieved by the present utility model are as follows:

[0033] 1. It can divert water to specific branch pipelines and convey it to the target farmland, improving the accuracy of irrigation;

[0034] 2. By setting a sealing strip and a water filling groove, the sealing performance is improved;

[0035] 3. By detecting the liquid level, the incoming water flow rate is adjusted to avoid water running away due to excessive flow rate.

[0036] A farmland water conservancy irrigation diversion mechanism of the present utility model has an installation method, a connection method or a setting method that are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; the cross well 1, the water inlet channel 2, the rear water outlet channel 3, the side water outlet channel 4, the driving component 1 6, the auxiliary gate 1 7, the auxiliary gate 2 8, the driving component 2 9, the sealing strip 13, the liquid level rod 17, and the liquid level float 18 of the farmland water conservancy irrigation diversion mechanism of the present utility model are purchased on the market, and technicians in this industry only need to install and operate according to the attached operation manual, without the need for technicians in this field to perform creative labor.

[0037] All technical and scientific terms used in this article have the same meaning as those commonly understood by technicians in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A farmland water conservancy irrigation diversion mechanism, comprising a cross well (1), an inlet channel (2), a rear outlet channel (3) and two side outlet channels (4), wherein the inlet channel (2) is arranged in the water inlet direction of the cross well (1), the rear outlet channel (3) is connected to the cross well (1) and is opposite to the inlet channel (2), and the two side outlet channels (4) are respectively installed on the left and right sides of the cross well (1); characterized in that: It also comprises a main gate plate (5), a driving component one (6), an auxiliary gate plate one (7), two auxiliary gate plates two (8) and two driving components two (9), wherein the middle part of the main gate plate (5) is hinged to the input end of the rear water outlet channel (3), the lower part of the main gate plate (5) extends into the rear water outlet channel (3), one end of the driving component one (6) is rotatably connected to the upper part of the main gate plate (5), and the other end of the driving component one (6) is rotatably connected to the rear water outlet channel (3), the lower part of the main gate plate (5) is provided with a water outlet, the middle and upper part of the auxiliary gate plate one (7) is hinged to the two sides of the water outlet of the main gate plate (5), and the lower part of the auxiliary gate plate one (7) connects the main gate plate (5) to the water outlet of the main gate plate (5). The water outlet of the plate (5) is closed, the rear ends of the two auxiliary gate plates (8) are respectively hinged to the left and right sides of the main gate plate (5), the two auxiliary gate plates (8) respectively close the input ends of the two side outlet channels (4), the rear ends of the two driving components (9) are movably connected to the upper part of the auxiliary gate plate (7), the front ends of the two driving components (9) are respectively movably connected to the two auxiliary gate plates (8), a limiting structure is arranged between the auxiliary gate plate (7) and the main gate plate (5), and after the two auxiliary gate plates (8) respectively close the two side outlet channels (4), the limiting structure releases the limiting of the auxiliary gate plate (7) and the main gate plate (5).

2. The farmland water conservancy irrigation diversion mechanism according to claim 1, characterized in that: The driving component 1 (6) and the driving component 2 (9) are one or both of an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

3. The farmland water conservancy irrigation diversion mechanism according to claim 1, characterized in that: It also includes a blocking block (10), which is arranged at the lower part of the rear end surface of the main gate plate (5), and the blocking block (10) blocks the lower limit of the auxiliary gate plate (7).

4. The farmland water conservancy irrigation diversion mechanism according to claim 1, characterized in that: The limiting structure comprises two strips (11) and two push plates (12), the two strips (11) being mounted on the upper end of the water outlet of the main gate plate (5), the two strips (11) being aligned with the two driving components (9) respectively, the two push plates (12) being mounted on the rear ends of the two driving components (9) respectively, the rear end surfaces of the two push plates (12) being in sliding contact with the front end surfaces of the two strips (11) respectively, and the two push plates (12) being separated from the two strips (11) when the two auxiliary gate plates (8) close the two side outlet channels (4).

5. The farmland water conservancy irrigation diversion mechanism according to claim 1, characterized in that: It also includes a plurality of sealing strips (13), wherein the lower edge and left and right edges of the auxiliary gate plate 1 (7) are provided with sealing strips (13), and the lower edges and left and right edges of the two auxiliary gate plates 2 (8) are both provided with sealing strips (13).

6. The farmland water conservancy irrigation diversion mechanism according to claim 5, characterized in that: It also comprises a plurality of water irrigation grooves (14) and a plurality of water inlet holes (15), the auxiliary gate plate 1 (7) and the two auxiliary gate plates 2 (8) are both provided with water irrigation grooves (14), the plurality of water irrigation grooves (14) are respectively located on the inner sides of the plurality of sealing strips (13), the auxiliary gate plate 1 (7) and the two auxiliary gate plates 2 (8) are both provided with a plurality of water inlet holes (15) on the side walls facing the cross well (1), and the plurality of water inlet holes (15) are respectively connected with the plurality of water irrigation grooves (14).

7. The farmland water conservancy irrigation diversion mechanism according to claim 1, characterized in that: It also includes a liquid level rod (17) and a liquid level float (18). A vertical groove is arranged on the inner wall of the water inlet channel (2). The liquid level rod (17) is vertically installed in the groove. The liquid level float (18) is slidably installed on the liquid level rod (17).

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