Diversion irrigation gate and farmland ridge irrigation method

Abstract

The present invention relates to the field of agricultural water-saving technology, and discloses a diversion irrigation gate and a farmland ridge irrigation method. In the present invention, in each opening stage of the main channel gate, the opening degree of the main channel gate gradually increases, so that the water runoff of the main channel gate in the next opening stage is greater than the water runoff of the main channel gate in the previous opening stage, thereby effectively adjusting the opening degree of the main channel gate according to the number of branch channel gates opened. At the same time, because the width of the main channel gate is consistent from bottom to top, and the increase in the opening degree of the main channel gate in the next opening stage is less than the increase in the opening degree of the main channel gate in the previous opening stage, the change in water flow velocity caused by the water flow height can be effectively balanced, thereby effectively ensuring the distribution of irrigation water, and effectively achieving the purpose of water conservation. Moreover, by providing a main channel desilting mechanism and a branch channel desilting mechanism, the irrigation capacity of the irrigation area is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural water saving, in particular to a diversion irrigation gate and a farmland ridge irrigation method. Background Art

[0002] Diversion irrigation gates are key facilities in agricultural water conservancy projects, primarily used to regulate water flow direction and distribution. In traditional irrigation systems, gates, as the core of water flow distribution, typically utilize a single gate independent control mode. This design has significant limitations in terms of water flow distribution accuracy, multi-area coordination, and long-term operation and maintenance costs. Diversion irrigation gates are particularly widely used in the field of ridge irrigation.

[0003] For example, in terraced fields or large farmland scenarios, multiple gates need to be manually adjusted one by one to meet the irrigation needs of different plots of land. Operators need to frequently travel back and forth between the gates, which is not only time-consuming and labor-intensive (a single water distribution operation takes an average of 3-5 hours), but also difficult to dynamically adjust according to real-time water level changes, resulting in an imbalance in water distribution upstream and downstream, and frequent problems of over-irrigation in some areas and insufficient water supply in other areas. According to statistics, the water resource waste rate of traditional gate systems due to uneven distribution is as high as 25%-40%.

[0004] The gate structure design is not capable of preventing and controlling silt deposition. Suspended particles in the water flow gradually accumulate at the bottom of the gate chamber, especially during flood season or in rivers with high sediment content. The siltation thickness can increase by 10-15 cm each year, resulting in increased resistance to gate opening and closing (in extreme cases, the load on the opening and closing motor increases by more than 30%), and even causing mechanical failures such as gate deformation or guide rail jamming, seriously affecting the reliability and service life of the irrigation system. Irrigation needs to be interrupted during dredging, causing direct economic losses to agricultural production. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a diversion irrigation gate and a farmland ridge irrigation method.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A diversion irrigation gate comprises a main diversion channel and a plurality of branch diversion channels, wherein the main diversion channel is connected to each of the branch diversion channels, a main diversion channel gate is provided at one end of the main diversion channel away from each of the branch diversion channels, and each of the branch diversion channels is provided with a branch diversion channel gate at one end away from the main diversion channel; the main diversion channel gate comprises a plurality of opening stages, and each time a branch diversion channel gate is opened, the main diversion channel gate enters the next opening stage from the previous opening stage; within each opening stage of the main diversion channel gate, the opening degree of the main diversion channel gate gradually increases , and the increase in the opening degree of the main channel gate in the next opening stage is less than the increase in the opening degree of the main channel gate in the previous opening stage; a main channel silt removal mechanism is provided at the bottom of the main channel gate, and the main channel silt removal mechanism can silt part of the diversion main channel on both sides of the main channel gate in the first opening stage of the main channel gate; a branch channel silt removal mechanism is provided at the bottom of each branch channel gate, and the branch channel silt removal mechanism can silt part of the diversion branch channel on both sides of the branch channel gate during the opening process of the corresponding branch channel gate.

[0008] Preferably, the width of the main channel gate is consistent from bottom to top, and the water runoff in the next opening stage of the main channel gate is greater than the water runoff in the previous opening stage of the main channel gate; in each opening stage of the main channel gate, as the opening degree of the corresponding branch channel gate increases, the opening degree of the main channel gate also gradually increases; the main channel gate also includes several closing stages, and each time a branch channel gate is closed, the main channel gate enters the next closing stage from the previous closing stage.

[0009] Preferably, the drainage main channel is provided with a main channel receiving groove at the bottom end of the main channel gate, a main channel sealing plate is provided at the center of the top of the main channel receiving groove, and a main channel sealing groove is provided at the top of the main channel sealing plate; the main channel dredging mechanism is provided inside the main channel receiving groove, and main channel dredging openings are provided at the top of the main channel receiving groove and on both sides of the main channel sealing plate.

[0010] Preferably, the main channel gate includes a main channel gate frame, a main channel sealing plate and a main channel closing mechanism, the main channel sealing plate is movably installed inside the main channel gate frame, and the main channel closing mechanism is arranged at the top of the main channel gate frame; the main channel closing mechanism includes a main channel closing connecting rod and a main channel closing motor, power transmission is between the main channel closing motor and the main channel closing connecting rod, and main channel closing sprockets are respectively provided at both ends of the main channel closing connecting rod, and main channel drive chains are respectively provided at both ends of the side of the main channel sealing plate close to the main channel closing mechanism, and one main channel drive chain is engaged with one main channel closing sprocket respectively.

[0011] Preferably, the dry channel dredging mechanism includes two dry channel opening sealing plates, each of which is provided with a dry channel mounting shaft on one side, and each of which is provided with a dry channel rubber sealing strip on the other side, and a dry channel sealing plate driving gear on one side of the dry channel mounting shaft; two dry channel driving racks are provided on one side of the dry channel sealing plate and located inside the dry channel gate frame, and the dry channel driving racks can extend from the inside of the dry channel gate frame into the inside of the dry channel receiving tank.

[0012] Preferably, in the first opening stage of the dry channel gate, the dry channel dredging mechanism can be separated from the dry channel sealing groove, and the two dry channel driving racks are respectively engaged with the two dry channel sealing plate driving gears, driving the two dry channel opening sealing plates to rotate toward each other, opening the two dry channel dredging openings, and the water flow inside the drainage dry channel can pass through the dry channel receiving groove and the dry channel gate, and flush away the silt accumulated in the dry channel gate under the drop provided by the dry channel receiving groove; during the closing process of the dry channel gate, the dry channel gate can gradually extend into the dry channel sealing groove, and the dry channel dredging mechanism can gradually close the two dry channel dredging openings respectively.

[0013] Preferably, the diversion branch channel is provided with a branch channel receiving groove at the bottom end of the branch channel gate, a branch channel sealing plate is provided at the center of the top of the branch channel receiving groove, and a branch channel sealing groove is provided at the top of the branch channel sealing plate; the branch channel dredging mechanism is provided inside the branch channel receiving groove, and branch channel dredging openings are provided at the top of the branch channel receiving groove and on both sides of the branch channel sealing plate; the branch channel gate includes a branch channel gate frame, a branch channel sealing plate and a branch channel closing mechanism, the branch channel sealing plate is movably installed inside the branch channel gate frame, and the branch channel closing mechanism is provided at the top of the branch channel gate frame.

[0014] Preferably, the branch channel closing mechanism includes a branch channel closing connecting rod and a branch channel closing motor, power transmission is performed between the branch channel closing motor and the branch channel closing connecting rod, branch channel closing sprockets are respectively provided at both ends of the branch channel closing connecting rod, branch channel drive chains are respectively provided at both ends of the branch channel sealing plate on one side close to the branch channel closing mechanism, and one branch channel drive chain is respectively engaged with one branch channel closing sprocket; the branch channel dredging mechanism includes two branch channel opening sealing plates, a branch channel mounting shaft is provided on one side of each branch channel opening sealing plate, a branch channel rubber sealing strip is provided on the other side of each branch channel opening sealing plate, and a branch channel sealing plate driving gear is provided on one side of the branch channel mounting shaft.

[0015] Preferably, during the closing process of the branch channel gate, the branch channel gate can gradually extend into the interior of the branch channel sealing plate, and the branch channel dredging mechanism can gradually close the two branch channel dredging openings respectively; two branch channel driving racks are provided on one side of the branch channel sealing plate and located inside the branch channel gate frame, and the branch channel driving racks can extend into the branch channel receiving groove from the interior of the branch channel gate frame, and the two branch channel driving racks are respectively engaged with the two branch channel sealing plate driving gears; during the gradual opening process of the branch channel gate, the branch channel dredging mechanism can disengage from the branch channel sealing groove, and the two branch channel opening sealing plates gradually rotate toward each other, gradually opening the two branch channel dredging openings, and the water flow inside the diversion branch channel can pass through the branch channel receiving groove and the branch channel gate, and flush away the silt accumulated in the branch channel gate under the drop provided by the branch channel receiving groove.

[0016] A method for irrigating farmland by splitting ridges, using the aforementioned diversion irrigation gate, comprises the following steps:

[0017] Connect the main diversion channel with the irrigation channel of the farmland, and connect each branch channel with each ridge of the farmland;

[0018] Open the gates of each branch canal corresponding to the ridge to be irrigated. Each time a branch canal gate is opened, the gates of the main canal will enter the next opening stage from the previous opening stage.

[0019] When the gates of each branch channel are opened, the branch channel desilting unit will desilt some of the diversion branches on both sides of the branch channel gates;

[0020] When the first branch canal gate is opened, the main canal gate is in the first opening stage, and the main canal dredging mechanism dredges part of the drainage main canal on both sides of the main canal gate.

[0021] Compared with the prior art, the present invention provides a diversion irrigation gate and a farmland ridge irrigation method, which has the following beneficial effects:

[0022] 1. This type of diversion irrigation gate, when irrigation is needed in a certain irrigation area, opens the corresponding branch canal gate, and the diversion main canal can enter the next opening stage from the previous opening stage each time a branch canal gate is opened; in each opening stage of the main canal gate, the opening degree of the main canal gate gradually increases, so that the water runoff in the next opening stage of the main canal gate is greater than the water runoff in the previous opening stage of the main canal gate, and thus the opening degree of the main canal gate can be effectively adjusted according to the number of branch canal gates opened. At the same time, since the width of the main canal gate is consistent from bottom to top, and the increase in the opening degree of the main canal gate in the next opening stage is less than the increase in the opening degree of the main canal gate in the previous opening stage, it can effectively balance the changes in water flow velocity caused by the water flow height, and thus can effectively ensure the distribution of irrigation water, and can effectively achieve the purpose of saving water.

[0023] 2. This type of diversion irrigation gate, in addition, since the main channel silt clearing mechanism can silt part of the drainage main channel on both sides of the main channel gate in the first opening stage of the main channel gate; the branch channel silt clearing mechanism can silt part of the diversion branch channel on both sides of the branch channel gate during the opening process of the corresponding branch channel gate; it can effectively avoid the increase in the opening resistance of the main channel gate and each branch channel gate due to silt accumulation, reduce the energy consumption of the opening of the main channel gate and each branch channel gate, and avoid mechanical failures such as gate plate deformation or guide rail jamming, thereby effectively ensuring the irrigation capacity of the irrigation area.

[0024] 3. For this type of diversion irrigation gate, under the power output provided by the main channel closing motor, the main channel closing connecting rod drives the main channel closing sprocket to rotate, thereby driving the main channel driving chain and the main channel sealing plate to move synchronously through the main channel closing sprocket. In the first opening stage of the main channel gate, the two main channel driving racks arranged at the bottom end of the main channel sealing plate are respectively engaged with the two main channel sealing plate driving gears, and in the process of the main channel sealing plate being lifted upward, the two main channel mounting shafts are driven to drive the two main channel opening sealing plates to rotate in the direction approaching each other, thereby opening the two main channel dredging openings, and the water flow inside the diversion main channel can pass through the main channel receiving trough and the main channel gate, and the silt accumulated in the main channel gate can be washed away under the drop provided by the main channel receiving trough, thereby effectively dredging both sides of the main channel gate, so as to reduce the energy consumption of opening the main channel gate, avoid mechanical failures such as deformation of the main channel sealing plate, and effectively ensure the irrigation capacity of the irrigation area.

[0025] 4. This method of farmland ridge irrigation can effectively reduce the waste of irrigation water in farmland ridge irrigation through the linkage between each branch channel gate and the main channel gate. Through the setting of the main channel silt clearing mechanism and the branch channel silt clearing mechanism, each branch channel gate and the main channel gate can be silted separately, which can reduce the silt accumulation caused by the setting in the farmland, avoid the increase of the gate opening and closing resistance, and cause gate failure. It can also carry out silt clearing without stopping irrigation to ensure the continuity of irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a diversion irrigation gate of the present invention;

[0027] Figure 2 This is a schematic diagram of the assembly structure of a diversion irrigation gate, a main channel, a main channel gate, and a main channel desilting mechanism of the present invention;

[0028] Figure 3 This is a second schematic diagram of the assembly structure of the diversion main channel, main channel gate and main channel desilting mechanism of a diversion irrigation gate of the present invention;

[0029] Figure 4 For the present invention Figure 3 A magnified view of part A;

[0030] Figure 5 This is a schematic diagram of the assembly structure of a diversion canal, a branch canal gate, and a branch canal desilting mechanism of a diversion irrigation gate according to the present invention;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of a diversion branch canal, a branch canal gate, and a branch canal desilting mechanism of a diversion irrigation gate according to the present invention;

[0032] Figure 7 This is a second schematic diagram of the three-dimensional structure of a diversion canal, a branch canal gate, and a branch canal desilting mechanism of a diversion irrigation gate according to the present invention;

[0033] Figure 8 The present invention provides a cross-sectional view of a diversion canal, a branch canal gate, and a branch canal desilting mechanism of a diversion irrigation gate.

[0034] Figure: 1. Diversion main channel; 11. Main channel receiving trough; 111. Main channel desilting opening; 12. Main channel sealing plate; 121. Main channel sealing trough; 2. Branch channel; 21. Branch channel receiving trough; 211. Branch channel desilting opening; 22. Branch channel sealing plate; 221. Branch channel sealing trough; 3. Main channel gate; 31. Main channel gate frame; 32. Main channel sealing plate; 321. Main channel drive chain; 322. Main channel drive rack; 33. Main channel closing mechanism; 331. Main channel closing connecting rod; 332. Main channel closing motor; 333. Main channel closing sprocket; 4. Branch channel gate ;41. Branch channel gate frame;42. Branch channel sealing plate;421. Branch channel drive chain;422. Branch channel drive rack;43. Branch channel closing mechanism;431. Branch channel closing connecting rod;432. Branch channel closing motor;433. Branch channel closing sprocket;5. Main channel desilting mechanism;51. Main channel opening sealing plate;511. Main channel rubber sealing strip;52. Main channel installation shaft;521. Main channel sealing plate drive gear;6. Branch channel desilting mechanism;61. Branch channel opening sealing plate;611. Branch channel rubber sealing strip;62. Branch channel installation shaft;621. Branch channel sealing plate drive gear. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a diversion irrigation gate and a farmland ridge irrigation method.

[0037] Example 1:

[0038] See also Figures 1-8A diversion irrigation gate comprises a main diversion channel 1 and a plurality of branch diversion channels 2. The main diversion channel 1 is connected to each branch diversion channel 2. A main channel gate 3 is provided at one end of the main diversion channel 1 away from each branch diversion channel 2. Each branch diversion channel 2 is provided with a branch channel gate 4 at one end away from the main diversion channel 1. The main channel gate 3 comprises a plurality of opening stages. Each time a branch channel gate 4 is opened, the main channel gate 3 enters the next opening stage from the previous opening stage. In each opening stage of the main channel gate 3, the opening degree of the main channel gate 3 gradually increases. Increases, and the increase in the opening degree of the main channel gate 3 in the next opening stage is less than the increase in the opening degree of the main channel gate 3 in the previous opening stage; a main channel desilting mechanism 5 is provided at the bottom of the main channel gate 3, and the main channel desilting mechanism 5 can desilt part of the diversion main channel 1 on both sides of the main channel gate 3 in the first opening stage of the main channel gate 3; a branch channel desilting mechanism 6 is provided at the bottom of the branch channel gate 4, and the branch channel desilting mechanism 6 can desilt part of the diversion branch channel 2 on both sides of the branch channel gate 4 during the opening process of the corresponding branch channel gate 4.

[0039] The width of the main canal gate 3 is consistent from bottom to top, and the water runoff in the next opening stage of the main canal gate 3 is greater than the water runoff in the previous opening stage of the main canal gate 3; in each opening stage of the main canal gate 3, as the opening degree of the corresponding branch canal gate 4 increases, the opening degree of the main canal gate 3 also gradually increases; the main canal gate 3 also includes several closing stages, and each time a branch canal gate 4 is closed, the main canal gate 3 enters the next closing stage from the previous closing stage.

[0040] When in use, the diversion irrigation gate can be set at the location where diversion irrigation is required, the diversion main channel 1 is connected to the irrigation main channel (or the secondary irrigation branch channel), and each diversion branch channel 2 is connected to each area where diversion irrigation is required. When irrigation is required in a certain irrigation area, the corresponding branch channel gate 4 is opened, and the diversion main channel 1 can enter the next opening stage from the previous opening stage every time a branch channel gate 4 is opened; in each opening stage of the main channel gate 3, the opening degree of the main channel gate 3 gradually increases, so that the main channel gate 3 The water runoff in the next opening stage of gate 3 is greater than the water runoff in the previous opening stage of main canal gate 3, and thus the opening degree of main canal gate 3 can be effectively adjusted according to the number of openings of branch canal gate 4. At the same time, since the width of main canal gate 3 from bottom to top is consistent, and the increase in the opening degree of main canal gate 3 in the next opening stage is less than the increase in the opening degree of main canal gate 3 in the previous opening stage, it can effectively balance the change in water flow velocity caused by water flow height, and thus can effectively ensure the distribution of irrigation water, and can effectively achieve the purpose of saving water.

[0041] In addition, since the main channel dredging mechanism 5 can dredge part of the drainage main channel 1 on both sides of the main channel gate 3 during the first opening stage of the main channel gate 3; the branch channel dredging mechanism 6 can dredge part of the diversion branch channel 2 on both sides of the branch channel gate 4 during the opening of the corresponding branch channel gate 4; it can effectively avoid the increase in the opening resistance of the main channel gate 3 and each branch channel gate 4 due to silt accumulation, reduce the energy consumption of opening the main channel gate 3 and each branch channel gate 4, and avoid mechanical failures such as gate plate deformation or guide rail jamming, thereby effectively ensuring the irrigation capacity of the irrigation area.

[0042] Example 2:

[0043] See also Figures 1-8 The difference from the above embodiment is that the drainage main channel 1 is provided with a main channel receiving groove 11 at the bottom end of the main channel gate 3, a main channel sealing plate 12 is provided at the center of the top of the main channel receiving groove 11, and a main channel sealing groove 121 is provided at the top of the main channel sealing plate 12; the main channel desilting mechanism 5 is arranged inside the main channel receiving groove 11, and main channel desilting openings 111 are provided at the top of the main channel receiving groove 11 and on both sides of the main channel sealing plate 12.

[0044] The main channel gate 3 includes a main channel gate frame 31, a main channel sealing plate 32 and a main channel closing mechanism 33. The main channel sealing plate 32 is movably installed inside the main channel gate frame 31, and the main channel closing mechanism 33 is arranged at the top of the main channel gate frame 31; the main channel closing mechanism 33 includes a main channel closing connecting rod 331 and a main channel closing motor 332. Power is transmitted between the main channel closing motor 332 and the main channel closing connecting rod 331. Main channel closing sprockets 333 are respectively provided at both ends of the main channel closing connecting rod 331. Main channel drive chains 321 are respectively provided at both ends of the side of the main channel sealing plate 32 close to the main channel closing mechanism 33. One main channel drive chain 321 is respectively engaged with one main channel closing sprocket 333.

[0045] The main channel dredging mechanism 5 includes two main channel opening sealing plates 51, each main channel opening sealing plate 51 is provided with a main channel installation shaft 52 on one side, each main channel opening sealing plate 51 is provided with a main channel rubber sealing strip 511 on the other side, and a main channel installation shaft 52 is provided with a main channel sealing plate driving gear 521 on one side; two main channel driving racks 322 are provided on one side of the main channel sealing plate 32 and located inside the main channel gate frame 31, and the main channel driving racks 322 can extend from the inside of the main channel gate frame 31 into the main channel receiving tank 11.

[0046] In the first opening stage of the main channel gate 3, the main channel desilting mechanism 5 can be separated from the main channel sealing groove 121, and the two main channel driving racks 322 are respectively engaged with the two main channel sealing plate driving gears 521, driving the two main channel opening sealing plates 51 to rotate toward each other, opening the two main channel desilting openings 111, and the water flow inside the diversion main channel 1 can pass through the main channel receiving groove 11 and the main channel gate 3, and the silt accumulated in the main channel gate 3 can be washed away under the drop provided by the main channel receiving groove 11; during the closing process of the main channel gate 3, the main channel gate 3 can gradually extend into the main channel sealing groove 121, and the main channel desilting mechanism 5 can gradually close the two main channel desilting openings 111 respectively.

[0047] During specific use, the shape of the inner wall of the dry channel receiving groove 11 can be set to the same shape as the trajectory of the dry channel rubber sealing strip 511 of the dry channel opening sealing plate 51 during the rotation process. The movement of the dry channel rubber sealing strip 511 can remove the sludge that may remain on the inner wall of the dry channel receiving groove 11, thereby ensuring that the dry channel desilting opening 111 is sealed by the dry channel rubber sealing strip 511, preventing sludge from entering, and effectively preventing the clogging of the internal sludge of the dry channel receiving groove 11, thereby effectively improving the desilting effect of the dry channel desilting mechanism 5.

[0048] Under the power output provided by the main channel closing motor 332, the main channel closing connecting rod 331 drives the main channel closing sprocket 333 to rotate, thereby driving the main channel driving chain 321 and the main channel sealing plate 32 to move synchronously through the main channel closing sprocket 333. In the first opening stage of the main channel gate 3, the two main channel driving racks 322 arranged at the bottom of the main channel sealing plate 32 are respectively engaged with the two main channel sealing plate driving gears 521. In the process of the main channel sealing plate 32 being lifted upward, the two main channel mounting shafts 52 are driven to respectively drive the two main channel opening sealing plates 51 to rotate in a direction close to each other, thereby opening the two main channel desilting openings 111, and the water flow inside the drainage main channel 1 can pass through the main channel receiving groove. 11 and the main channel gate 3, the silt accumulated in the main channel gate 3 is washed away under the drop provided by the main channel receiving groove 11, so that the silt on both sides of the main channel gate 3 can be effectively desilted; on the contrary, during the closing process of the main channel gate 3, the main channel gate 3 can gradually extend into the main channel sealing groove 121, and the two main channel mounting shafts 52 respectively drive the two main channel opening sealing plates 51 to rotate away from each other, and gradually close the two main channel desilting openings 111, so as to wait for the desilting process of the first opening stage of the next main channel gate 3, reduce the energy consumption of opening the main channel gate 3, and avoid mechanical failures such as deformation of the main channel sealing plate 32, thereby effectively ensuring the irrigation capacity of the irrigation area.

[0049] Example 3:

[0050] See also Figures 1-8The difference from the above embodiment is that the diversion branch channel 2 is provided with a branch channel receiving groove 21 at the bottom end of the branch channel gate 4, a branch channel sealing plate 22 is provided at the center of the top of the branch channel receiving groove 21, and a branch channel sealing groove 221 is provided at the top of the branch channel sealing plate 22; the branch channel dredging mechanism 6 is arranged inside the branch channel receiving groove 21, and branch channel dredging openings 211 are respectively provided at the top of the branch channel receiving groove 21 and on both sides of the branch channel sealing plate 22; the branch channel gate 4 includes a branch channel gate frame 41, a branch channel sealing plate 42 and a branch channel closing mechanism 43, the branch channel sealing plate 42 is movably installed inside the branch channel gate frame 41, and the branch channel closing mechanism 43 is provided at the top of the branch channel gate frame 41.

[0051] The branch channel closing mechanism 43 includes a branch channel closing link 431 and a branch channel closing motor 432. Power is transmitted between the branch channel closing motor 432 and the branch channel closing link 431. Branch channel closing sprockets 433 are respectively provided at both ends of the branch channel closing link 431. Branch channel driving chains 421 are respectively provided at both ends of the branch channel sealing plate 42 close to the branch channel closing mechanism 43. One branch channel driving chain 421 is respectively engaged with one branch channel closing sprocket 433; the branch channel dredging mechanism 6 includes two branch channel opening sealing plates 61. A branch channel mounting shaft 62 is provided on one side of each branch channel opening sealing plate 61, and a branch channel rubber sealing strip 611 is provided on the other side of each branch channel opening sealing plate 61. A branch channel sealing plate driving gear 621 is provided on one side of the branch channel mounting shaft 62.

[0052] During the closing process of the branch channel gate 4, the branch channel gate 4 can gradually extend into the interior of the branch channel sealing plate 22, and the branch channel silt removal mechanism 6 can gradually close the two branch channel silt removal openings 211 respectively; two branch channel driving racks 422 are provided on one side of the branch channel sealing plate 42 and located inside the branch channel gate frame 41, and the branch channel driving racks 422 can extend into the interior of the branch channel receiving groove 21 from the interior of the branch channel gate frame 41, and the two branch channel driving racks 422 are respectively engaged with the two branch channel sealing plate driving gears 621; during the gradual opening process of the branch channel gate 4, the branch channel silt removal mechanism 6 can disengage from the branch channel sealing groove 221, and the two branch channel opening sealing plates 61 gradually rotate toward each other, gradually opening the two branch channel silt removal openings 211, and the water flow inside the diverted branch channel 2 can pass through the branch channel receiving groove 21 and the branch channel gate 4, and flush away the silt accumulated in the branch channel gate 4 under the drop provided by the branch channel receiving groove 21.

[0053] Specifically, the dredging process of the branch channel sluice gate 4 by the branch channel dredging mechanism 6 is the same as the dredging process of the main channel sluice gate 3 by the main channel dredging mechanism 5 in the first opening stage of the main channel sluice gate 3, which will not be repeated here.

[0054] Example 4:

[0055] A method for irrigating farmland ridges, using a diversion irrigation gate as described in any one of Examples 1 to 3, comprises the following steps:

[0056] Connect the main diversion channel 1 with the irrigation channel of the farmland, and connect each branch channel 2 with each ridge mouth of the farmland;

[0057] Open the gates 4 of each branch canal corresponding to the ridge to be irrigated. Each time a gate 4 of a branch canal is opened, the gate 3 of the main canal enters the next opening stage from the previous opening stage.

[0058] When the gates 4 of each branch channel are opened, the branch channel desilting mechanism 6 desilts part of the branch channel 2 on both sides of the branch channel gate 4;

[0059] When the first branch channel gate 4 is opened, the main channel gate 3 is in the first opening stage, and the main channel desilting mechanism 5 desilts part of the drainage main channel 1 on both sides of the main channel gate 3 .

[0060] Therefore, when in use, the linkage between each branch channel gate 4 and the main channel gate 3 can effectively reduce the waste of irrigation water in farmland ridge irrigation, and through the setting of the main channel dredging mechanism 5 and the branch channel dredging mechanism 6, the dredging operation can be performed on each branch channel gate 4 and the main channel gate 3 respectively, which can reduce the silt accumulation caused by being set in the farmland, avoid the increase of the gate opening and closing resistance, and cause gate failure, and can also carry out dredging without stopping irrigation to ensure the continuity of irrigation.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A diversion irrigation gate, comprising a main diversion channel and a plurality of branch diversion channels, wherein the main diversion channel is connected to each of the branch diversion channels, characterized in that: The main drainage channel is provided with a main channel gate at one end away from each of the diversion branches, and each of the diversion branches is provided with a branch channel gate at one end away from the main drainage channel; The main channel gate includes several opening stages, and each time a branch channel gate is opened, the main channel gate enters the next opening stage from the previous opening stage; In each opening stage of the main channel gate, the opening degree of the main channel gate gradually increases, and the increase value of the opening degree of the main channel gate in the next opening stage is less than the increase value of the opening degree of the main channel gate in the previous opening stage; A dry canal desilting mechanism is provided at the bottom of the dry canal gate, and the dry canal desilting mechanism can desilt part of the drainage dry canal on both sides of the dry canal gate in the first opening stage of the dry canal gate; The bottom of each branch channel gate is provided with a branch channel desilting mechanism, which can desilt part of the diversion branch channel on both sides of the branch channel gate during the opening of the corresponding branch channel gate; The drainage main channel is provided with a main channel receiving groove at the bottom end of the main channel gate, a main channel sealing plate is provided at the top center of the main channel receiving groove, and a main channel sealing groove is provided at the top end of the main channel sealing plate; The dry channel desilting mechanism is arranged inside the dry channel receiving tank, and dry channel desilting openings are respectively arranged at the top of the dry channel receiving tank and on both sides of the dry channel sealing plate; The dry channel gate includes a dry channel gate frame, and the dry channel desilting mechanism includes two dry channel opening sealing plates, one side of each of the dry channel opening sealing plates is provided with a dry channel mounting shaft, the other side of each of the dry channel opening sealing plates is provided with a dry channel rubber sealing strip, and one side of each of the dry channel mounting shafts is provided with a dry channel sealing plate driving gear; Two dry channel drive racks are provided on one side of the dry channel sealing plate and located inside the dry channel gate frame, and the dry channel drive racks can extend from the inside of the dry channel gate frame into the inside of the dry channel receiving tank; The structure of the branch channel desilting mechanism is the same as that of the main channel desilting mechanism.

2. A diversion irrigation gate according to claim 1, characterized in that: The width of the main channel gate is consistent from bottom to top, and the water runoff volume of the next opening stage of the main channel gate is greater than the water runoff volume of the previous opening stage of the main channel gate; In each opening stage of the main channel gate, as the opening degree of the corresponding branch channel gate increases, the opening degree of the main channel gate also gradually increases; The main channel gate also includes several closing stages. Every time a branch channel gate is closed, the main channel gate enters the next closing stage from the previous closing stage.

3. The diversion irrigation gate according to claim 1, characterized in that: The main channel gate further comprises a main channel sealing plate and a main channel closing mechanism, wherein the main channel sealing plate is movably mounted inside the main channel gate frame, and the main channel closing mechanism is arranged at the top of the main channel gate frame; The main channel closing mechanism includes a main channel closing connecting rod and a main channel closing motor. Power is transmitted between the main channel closing motor and the main channel closing connecting rod. Main channel closing sprockets are respectively provided at both ends of the main channel closing connecting rod. Main channel drive chains are respectively provided at both ends of the main channel sealing plate on one side close to the main channel closing mechanism. One of the main channel drive chains is engaged with one of the main channel closing sprockets.

4. A diversion irrigation gate according to claim 3, characterized in that: In the first opening stage of the main channel gate, the main channel desilting mechanism can be separated from the main channel sealing groove, and the two main channel driving racks are respectively engaged with the two main channel sealing plate driving gears, driving the two main channel opening sealing plates to rotate toward each other, thereby opening the two main channel desilting openings. The water flow inside the drainage main channel can pass through the main channel receiving groove and the main channel gate, and the silt accumulated in the main channel gate is flushed away under the drop provided by the main channel receiving groove; During the closing process of the main channel gate, the main channel gate can gradually extend into the interior of the main channel sealing groove, and the main channel desilting mechanism can gradually close the two main channel desilting openings respectively.

5. The diversion irrigation gate according to claim 1, characterized in that: The branch channel is provided with a branch channel receiving groove at the bottom end of the branch channel gate, a branch channel sealing plate is provided at the top center of the branch channel receiving groove, and a branch channel sealing groove is provided at the top end of the branch channel sealing plate; The branch channel desilting mechanism is arranged inside the branch channel receiving tank, and branch channel desilting openings are respectively arranged at the top of the branch channel receiving tank and on both sides of the branch channel sealing plate; The branch channel gate includes a branch channel gate frame, a branch channel sealing plate and a branch channel closing mechanism. The branch channel sealing plate is movably installed inside the branch channel gate frame, and the branch channel closing mechanism is arranged at the top of the branch channel gate frame.

6. A diversion irrigation gate according to claim 5, characterized in that: The branch channel closing mechanism includes a branch channel closing connecting rod and a branch channel closing motor. Power is transmitted between the branch channel closing motor and the branch channel closing connecting rod. Branch channel closing sprockets are respectively provided at both ends of the branch channel closing connecting rod. Branch channel drive chains are respectively provided at both ends of the branch channel sealing plate on the side close to the branch channel closing mechanism. One branch channel drive chain is meshed with one branch channel closing sprocket. The branch channel dredging mechanism includes two branch channel opening sealing plates, each of which is provided with a branch channel mounting shaft on one side, a branch channel rubber sealing strip on the other side of each branch channel opening sealing plate, and a branch channel sealing plate driving gear on one side of the branch channel mounting shaft.

7. The diversion irrigation gate according to claim 6, characterized in that: During the closing process of the branch channel gate, the branch channel gate can gradually extend into the interior of the branch channel sealing plate, and the branch channel desilting mechanism can gradually close the two branch channel desilting openings respectively; Two branch channel drive racks are provided on one side of the branch channel sealing plate and located inside the branch channel gate frame. The branch channel drive racks can extend from the inside of the branch channel gate frame into the branch channel receiving groove, and the two branch channel drive racks are respectively engaged with the two branch channel sealing plate drive gears; During the gradual opening process of the branch channel gate, the branch channel dredging mechanism can be separated from the branch channel sealing groove, and the two branch channel opening sealing plates gradually rotate toward each other, gradually opening the two branch channel dredging openings, and the water flow inside the diversion branch channel can pass through the branch channel receiving groove and the branch channel gate, and flush away the silt accumulated in the branch channel gate under the drop provided by the branch channel receiving groove.

8. A method for ridge irrigation of farmland, characterized in that: Using a diversion irrigation gate as claimed in any one of claims 1 to 7, comprising the following steps: Connect the main diversion channel with the irrigation channel of the farmland, and connect each branch channel with each ridge of the farmland; Open the gates of each branch canal corresponding to the ridge to be irrigated. Each time a branch canal gate is opened, the gates of the main canal will enter the next opening stage from the previous opening stage. When the gates of each branch channel are opened, the branch channel desilting mechanism will desilt some of the diversion branches on both sides of the branch channel gates; When the first branch canal gate is opened, the main canal gate is in the first opening stage, and the main canal dredging mechanism dredges part of the drainage main canal on both sides of the main canal gate.

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