An agricultural irrigation canal for water conservancy projects

Abstract

The application belongs to the technical field of irrigation channels, and particularly relates to an agricultural irrigation water channel for water conservancy projects, which comprises a channel body, a sealing strip, a sand settling basin and a sand cleaning device. The U-shaped section and the spiral-shaped flow guide groove greatly improve the carrying capacity of the sand, so that the interval distance of the sand settling basin can be lengthened, the number of the sand settling basins and the sand cleaning devices of the water channel of the same length can be reduced, and the construction cost of the water channel is saved to a certain extent. Moreover, the spiral-shaped flow guide groove guides the rotation of the water flow and separates the sand and the water at the same time. Specifically, the sand is transported forward close to the inner wall of the channel body under the action of centrifugal force. Since the width and the depth of the inner wall of the sand settling basin are greater than the width and the depth of the channel body, the sand carried in the water flowing through the sand settling basin is attached to the inner wall of the sand settling basin under the action of centrifugal force, so that the sand is left in the sand settling basin to the maximum extent, and the sand settling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of irrigation channels, and particularly relates to an agricultural irrigation water channel for water conservancy projects. BACKGROUND

[0002] Water conservancy projects are projects built for the purpose of controlling and distributing surface water and underground water in nature to achieve the purpose of eliminating harm and benefiting, and irrigation water channels are generally used for water diversion in water conservancy projects. The irrigation water channel is a waterway connecting an irrigation water source and irrigated land, and can deliver and distribute water taken from the water source to each part of the irrigation area.

[0003] However, the current irrigation water channel is provided with a sand settling tank at intervals, and the sand settling tank is regularly cleaned. However, the flow rate of the water flow in the current irrigation water channel is slow, so that the water flow has weak ability to carry silt, and a large amount of silt is still deposited in the channel body after the irrigation water channel is used for a period of time, which not only affects the water delivery capacity of the irrigation water channel and further affects the irrigation efficiency, but also causes the silt deposited in the channel body to be cleaned in time, so that the water flow delivered by the water channel carries a large amount of silt, which further easily causes the valve body for subsequent flow distribution to be blocked, and thus manual regular cleaning is required, which greatly increases the cleaning difficulty and time, and further greatly affects farmland irrigation. SUMMARY

[0004] In order to make up for the deficiencies of the prior art, the application provides an agricultural irrigation water channel for water conservancy projects. The application mainly solves the problem that the flow rate of the water flow in the current irrigation water channel is slow, so that the water flow has weak ability to carry silt, and a large amount of silt is still deposited in the channel body after the irrigation water channel is used for a period of time, which not only affects the water delivery capacity of the irrigation water channel and further affects the irrigation efficiency, but also causes the silt deposited in the channel body to be cleaned in time, so that the water flow delivered by the water channel carries a large amount of silt, which further easily causes the valve body for subsequent flow distribution to be blocked.

[0005] The application solves the technical problem by adopting the technical scheme that the application provides an agricultural irrigation water channel for water conservancy projects, which comprises a channel body, a sealing strip, a sand settling tank and a sand cleaning device. The channel bodies are connected end to end, and the adjacent channel bodies are sealed by the sealing strips. The cross section of the channel body is U-shaped. A spiral flow guide groove is arranged on the inner wall of the channel body. One sand settling tank is arranged at intervals of several channel bodies. The depth of the sand settling tank is greater than that of the channel body. The end faces of the channel bodies on both sides of the sand settling tank are sealed by building structural adhesive. The sand cleaning device is arranged in the sand settling tank, and is used for cleaning the sand in the sand settling tank.

[0006] The application adopts the U-shaped section of the channel body, and sets the spiral flow guide groove on the inner wall of the channel body, so that the water flowing through the channel body not only has a faster flow rate due to the U-shaped section, but also rotates spirally under the guidance of the spiral flow guide groove while flowing, thereby improving the capacity of the water to carry silt, and cooperating with the silt settling tank arranged at intervals of 20-25 meters, thereby ensuring that no silt is deposited in the channel body, thereby ensuring the flow efficiency of the water flow, and when the water is branched to the farmland, not only the risk of blockage of the control valve is reduced, but also the control accuracy of the control valve for the water quantity is improved, thereby maximizing the irrigation effect. The U-shaped section and the spiral flow guide groove greatly improve the capacity of carrying silt, thereby enabling the interval distance of the silt settling tank to be lengthened, thereby reducing the number of silt settling tanks and sand removal devices invested in the water channel of the same length, to a certain extent, saving the investment cost of building the water channel; and the spiral flow guide groove guides the water flow to rotate while separating the silt and the water, specifically, the silt is transported forward close to the inner wall of the channel body under the action of centrifugal force, and because the inner wall width and depth of the silt settling tank are greater than the width and depth of the channel body, the silt carried in the water flowing through the silt settling tank is attached to the inner wall of the silt settling tank under the action of centrifugal force, thereby maximizing the silt remaining in the silt settling tank, thereby improving the silt settling efficiency.

[0007] Preferably, a plurality of water permeation holes are arranged at intervals at the bottom of the flow guide groove of the channel body; the diameter of the water permeation hole is 1.8-2.3 mm; and the water permeation holes are distributed radially along the circular arc surface of the channel body.

[0008] The water permeation holes are arranged to balance the water pressure difference between the inside and outside of the channel body, reduce the static water pressure borne by the channel body, thereby preventing the channel body from cracking due to overloading caused by long-term water transportation, thereby improving the service life of the channel body; and when the underground water freezes and expands in winter, the water permeation holes discharge the excess water in the channel body, thereby reducing the damage of the frost heaving force to the channel body, further improving the service life of the water channel.

[0009] The φ2mm water permeation hole diameter cooperates with the 20cm interval layout, which can realize a single hole drainage capacity ≥0.8L / min, thereby meeting the channel body drainage demand while avoiding excessive drainage leading to structural instability; because the hole diameter is too large, the local flow rate increases sharply, such as the flow rate of a φ5mm hole can reach 2.5m / s, accelerating the hole wall erosion; and the φ2mm hole diameter can control the hole flow rate at 0.8-1.2m / s, thereby matching the overall flow rate of the flow guide groove 1.0-1.67m / s.

[0010] Preferably, a nylon filament bundle is arranged axially in the water permeation hole; the two ends of the nylon filament bundle are respectively anchored on the inner wall of the flow guide groove and the outer wall of the channel body through a clamping buckle; and a coarse sand layer, a gravel layer and a geotextile are arranged from top to bottom at the position corresponding to the water permeation hole below the channel body.

[0011] Firstly, through the root bundle of nylon wire bundle arranged in the water seepage hole, better interception of 0.5mm particles is realized, and then through the three-stage reverse filtration structure of coarse sand layer (2cm thick) + gravel layer (3cm thick) + geotextile, the risk of reverse blocking of particles outside the channel body to the water seepage hole is further reduced, thereby realizing bidirectional anti-blocking, reducing the water seepage hole unblocking period, and improving the convenience of water channel use.

[0012] Preferably, the cross section of the sealing strip is T-shaped structure; the sealing strip comprises a fixed part and an impact-resistant part; the fixed part and the impact-resistant part are arranged perpendicular to each other; the fixed part abuts between adjacent channel bodies; the impact-resistant part is attached to the inner wall of the channel body; an impact-resistant metal sheet is arranged in the impact-resistant part along the length direction.

[0013] The sealing strip is made of rubber material, which can not only achieve good sealing, but also make the channel body adapt to thermal expansion and contraction caused by environmental temperature changes, thereby adapting to the gap changes between adjacent two channel bodies through extrusion of the fixed part; by arranging the impact-resistant part on the inner side of the fixed part and arranging the impact-resistant metal sheet inside the impact-resistant part, good sealing and water flow scouring can also be achieved under the condition of U-shaped structure and rapid water flow with flow guide grooves, thereby improving the sealing performance of the water channel and avoiding waste caused by water resource leakage.

[0014] Preferably, the sand cleaning device is of symmetrical structure, and the symmetrical sand cleaning device is symmetrically arranged on both sides of the sand settling tank; the sand cleaning device comprises a filter screen, a tensioning rope, a first grooved wheel, a second grooved wheel, a support plate, a winding roller and a winding motor; the filter screen is a metal woven screen; the filter screen is uniformly and interval ly provided with a blocking part perpendicular to the filter screen along the length direction; the blocking part is a strip-shaped sheet structure woven by metal wires; the blocking part is perpendicular to the filter screen; the two side edges of the filter screen are fixedly connected to one of the tensioning ropes; the two ends of the filter screen are connected to the winding rollers symmetrically arranged; the filter screen symmetrically passes above the first grooved wheel; the first grooved wheel is rotatably connected to the two side ears of the channel body through the support plate; the filter screen symmetrically passes below the second grooved wheel; the second grooved wheel is arranged at the bottom of the sand settling tank; the tensioning rope passes through the notches of the first grooved wheel and the second grooved wheel; the winding roller is rotatably connected to the side wall of the sand settling tank through a mounting bracket; the end of the winding roller is connected to the driving shaft of the winding motor; and the winding motor is fixedly connected to the support plate.

[0015] The two winding motors arranged symmetrically are connected with the controller through electric signals; the power source of the winding motor is provided by the solar panel and the battery; during operation, the controller controls the winding motor on one side of the sand settling tank to wind, and controls the winding motor on the other side to unwind at the same time, so that the filter screen and the tensioning rope are wound to one side of the sand settling tank in a state of being always taut, and the blocking part on the filter screen blocks the deposited sand on the filter screen at the bottom of the sand settling tank, so that the sand on the filter screen is prevented from falling off during the rising process, and the sand in the sand settling tank is more efficiently removed; as the filter screen is continuously wound, when the sand on the filter screen moves to the lower side of the winding roller, the sand on the filter screen falls off under the action of gravity, so that the sand in the sand settling tank is automatically removed; after the deposited sand in the sand settling tank falls off from the lower side of the winding on one side, the two winding motors are controlled to stop rotating at the same time, so that the next sedimentation period is entered; after a certain amount of sand is deposited in the sand settling tank, the two winding motors are controlled to rotate reversely at the same time, so that the sand in the sand settling tank is transported to the winding roller on the other side; after cleaning, the two winding motors are controlled to stop rotating at the same time, so that the sedimentation period is entered again; the waiting time of the sedimentation period is adjusted according to the degree of the water source containing sand in the water channel, so that the sand removing device can ensure that the sand in the sand settling tank is removed in time, and the sand removing device is also prevented from working excessively and reducing the service life.

[0016] Preferably, a rubber sleeve is sleeved on the rotating shaft of the first grooved wheel; the rubber sleeve is inserted into the mounting hole of the support plate; the rotating shaft of the first grooved wheel is connected with the vibrating element of the vibrator; and the vibrator is fixedly connected to the support plate.

[0017] The vibrator is connected with the controller through electric signals; when the controller controls the winding motor of the sand removing device to wind, the controller controls the vibrator to start working at the same time, so that the vibrator drives the first grooved wheel to vibrate at high frequency and small amplitude, and the first grooved wheel drives the tensioning rope and the filter screen wound thereon to also vibrate at high frequency and small amplitude; on one hand, the water in the sand on the filter screen is shaken off in time, so that the solid-liquid separation process is accelerated, and the water loss is reduced, and the dehydrated sand is more easily dropped off the filter screen; on the other hand, the high-frequency small-amplitude vibration also prevents the sand from adhering to the filter screen, further improves the efficiency of the sand falling off the filter screen, and improves the sand removing effect of the sand removing device.

[0018] Preferably, an intercepting net is arranged on the filter screen along the length direction of the filter screen; the intercepting net is arranged on the filter screen close to the downstream end of the water flow; the intercepting net is perpendicular to the filter screen; and the intercepting net is fixedly connected with the filter screen.

[0019] By setting the intercepting net at one end of the filter screen, the water flow flowing in the upstream channel body obtains centrifugal force under the action of the flow guide groove, and the silt carried in the centrifugal force all impact on the filter screen of the desilting basin, and the continuously deposited silt on the filter screen is blocked by the intercepting net, otherwise the silt deposited on the filter screen will be carried away by the water flow again, thereby improving the silt setting capacity of the desilting basin and the sand cleaning effect of the sand cleaning device.

[0020] Preferably, a guide frame is arranged above the winding roller; the guide frame is arranged corresponding to the position of the intercepting net; the guide frame is fixedly connected to the desilting basin; a guide portion is arranged at the suspended end of the guide frame; and the guide portion is an inclined curved surface structure inclined downward.

[0021] By arranging the guide frame above the winding roller, when the intercepting net is about to be wound on the winding roller with the filter screen, the upper end of the intercepting net abuts against the guide portion, and the intercepting net is bent to be parallel to the filter screen under the extrusion of the guide portion as the intercepting net is continuously wound, and then the filter screen is wound on the winding roller; when the filter screen is reversely wound, the intercepting net is gradually unfolded as the filter screen is unfolded from the winding roller, and returns to the perpendicular state with the filter screen under the action of its own elasticity. By arranging the guide frame, the intercepting net is better wound, thereby improving the service life of the intercepting net and well ensuring that the shape of the intercepting net is not damaged, thereby ensuring the intercepting effect of the intercepting net.

[0022] Preferably, a plurality of intercepting strips are arranged on the filter screen along the width direction at intervals; the intercepting strips are arranged penetratingly along the length direction of the filter screen and are attached to the filter screen; and the intercepting strips are made of elastic material.

[0023] By arranging the intercepting strips upstream of the intercepting net, the silt carried in the water flow impacting on the filter screen can be intercepted by the plurality of intercepting strips, thereby preventing the silt on the filter screen from being completely accumulated on the intercepting net, and the silt accumulated to a certain degree is easily carried away by the water flow again, thereby improving the sand cleaning effect of the sand cleaning device.

[0024] Preferably, the height of the intercepting strips gradually increases in a gradient; the height of the intercepting strips closer to the intercepting net is greater.

[0025] By arranging the height of the intercepting strips to gradually increase in a gradient, the silt carried in the water flow can be more uniformly intercepted by the plurality of intercepting strips, rather than being blocked by the intercepting strip at the most upstream position and affecting the intercepting effect of the intercepting strips at the rear position, thereby improving the intercepting efficiency of the intercepting strips and the sand cleaning effect of the sand cleaning device.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. The present application adopts a U-shaped section channel body, and sets a spiral flow guide groove on the inner wall of the channel body, so that the water flowing through the channel not only speeds up due to the U-shaped section, but also rotates spirally under the guidance of the spiral flow guide groove while flowing, thereby improving the water's ability to carry sediment. In combination with the sedimentation tank set at intervals of 20-25 meters, it is ensured that no sediment is deposited in the channel body, thereby ensuring the flow efficiency of the water flow. When the water is diverted to farmland, not only is the risk of control valve blockage reduced, but also the control accuracy of the control valve for water quantity is improved, thereby maximizing the irrigation effect. The U-shaped section and the spiral flow guide groove greatly improve the sediment carrying capacity, thereby enabling the interval distance of the sedimentation tank to be lengthened, and the number of sedimentation tanks and sand cleaning devices invested in the same length of water channel to be reduced, thereby saving the construction investment cost of the water channel to a certain extent. Moreover, the spiral flow guide groove guides the water flow to rotate while separating the sediment and water. Specifically, the sediment is transported forward near the inner wall of the channel under the action of centrifugal force. Because the inner wall width and depth of the sedimentation tank are greater than the width and depth of the channel, the sediment carried in the water flowing through the sedimentation tank adheres to the inner wall of the sedimentation tank under the action of centrifugal force, thereby maximizing the sediment remaining in the sedimentation tank and improving the sedimentation efficiency.

[0028] 2. In the present application, the controller controls the winding motor on one side of the sedimentation tank to wind up, and controls the winding motor on the other side to unwind, thereby realizing the winding of the filter screen and the tensioning rope on one side of the sedimentation tank in a state of being always taut. In the process, the blocking part on the filter screen blocks the sediment deposited on the filter screen at the bottom of the sedimentation tank, thereby preventing the sediment attached to the filter screen from falling off during the rising process of the filter screen, and thereby realizing more efficient removal of the sediment in the sedimentation tank. As the filter screen is continuously wound up, the sediment attached to the filter screen falls off under the action of its own gravity when the sediment on the filter screen moves below the winding roller, thereby realizing automatic removal of the sediment in the sedimentation tank. When all the sediment deposited in the sedimentation tank falls off below the winding on one side, the controller controls the two winding motors to stop rotating at the same time, thereby entering the waiting state of the next sedimentation period. After a certain amount of sediment is deposited in the sedimentation tank, the controller controls the two winding motors to rotate in reverse at the same time, thereby realizing the transport of the sediment in the sedimentation tank to the winding roller on the other side. After cleaning is completed, the controller controls the two winding motors to stop rotating at the same time, thereby re-entering the waiting state of the sedimentation period. The waiting time of the sedimentation period is adjusted according to the degree of sediment in the water source in the water channel, thereby ensuring that the sand cleaning device can ensure that the sediment in the sedimentation tank is removed in time, and also ensuring that the sand cleaning device does not work too much and thereby reduces the service life.

[0029] 3. In the present application, when the controller controls the winding motor of the sand cleaning device to wind, the controller controls the vibrator to start working at the same time, and then the vibrator drives the first groove wheel to vibrate at high frequency and small amplitude, and then the first groove wheel drives the tensioning rope and the filter screen wound thereon to also vibrate at high frequency and small amplitude, which on the one hand realizes the timely shaking off of the water carried by the sand on the filter screen, thereby accelerating the solid-liquid separation process, reducing water loss, and also making the dehydrated sand more easily fall off the filter screen; on the other hand, high-frequency small-amplitude vibration also makes the sand unable to adhere to the filter screen, further improving the efficiency of the sand falling off the filter screen, thereby improving the sand cleaning effect of the sand cleaning device. BRIEF DESCRIPTION OF DRAWINGS

[0030] The present application will be further described below in conjunction with the drawings.

[0031] Figure 1 is the overall structure diagram of the irrigation canal of the present application;

[0032] Figure 2 is the top view of the irrigation canal of the present application;

[0033] Figure 3 is the structure diagram of the canal body in the present application;

[0034] Figure 4 is the cross-sectional view of the canal body in the present application;

[0035] Figure 5 is the structure diagram of the sealing strip in the present application;

[0036] Figure 6 is Figure 2 is the full cross-sectional view of A-A in the present application;

[0037] Figure 7 is the structure diagram of the sand cleaning device in the present application;

[0038] Figure 8 is the internal structure diagram of the sand cleaning device in the present application;

[0039] Figure 9 is the connection diagram of the rubber sleeve in the present application;

[0040] Figure 10 is the structure diagram of the guide frame in the present application;

[0041] Figure 11 is the structure diagram of the filter screen in the present application;

[0042] In the figure: channel body 1, diversion groove 11, water seepage hole 12, nylon wire bundle 13, sealing strip 2, fixed part 21, impact resistance part 22, impact resistance metal sheet 23, sand sink 3, sand cleaning device 4, filter screen 41, blocking part 411, intercepting strip 412, tensioning rope 42, first groove wheel 43, rubber sleeve 431, vibrator 432, second groove wheel 44, support plate 45, winding roller 46, winding motor 47, intercepting screen 48, guide frame 49, guide part 491. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0044] As shown in Figures 1 to 3 An agricultural irrigation canal for water conservancy projects, comprising a channel body 1, a sealing strip 2, a sand sink 3 and a sand cleaning device 4; the channel body 1 is connected end to end, and the adjacent channel bodies 1 are sealed by the sealing strip 2; the cross section of the channel body 1 is U-shaped; a spiral diversion groove 11 is arranged on the inner wall of the channel body 1; one sand sink 3 is arranged at intervals of several channel bodies 1; the depth of the sand sink 3 is greater than the depth of the channel body 1; the end faces of the channel bodies 1 on both sides of the sand sink 3 are sealed by building structural adhesive; the sand cleaning device 4 is arranged in the sand sink 3; the sand cleaning device 4 is used to clean the sand in the sand sink 3.

[0045] The present application uses a channel body 1 with a U-shaped cross section, and a spiral diversion groove 11 is arranged on the inner wall of the channel body 1, so that the water flowing through the channel body 1 not only flows faster due to the U-shaped cross section, but also rotates spirally under the guidance of the spiral diversion groove 11 while flowing, thereby improving the capacity of the water to carry sediment. In combination with the sand sink 3 arranged at intervals of 20-25 meters, it is ensured that no sediment is deposited in the channel body 1, thereby ensuring the flow efficiency of the water flow. When the water is branched to farmland, not only is the risk of control valve blockage reduced, but also the control accuracy of the control valve for water quantity is improved, thereby maximizing the irrigation effect. The U-shaped cross section and the spiral diversion groove 11 greatly improve the capacity to carry sediment, so that the interval distance of the sand sink 3 can be lengthened, thereby reducing the number of sand sinks 3 and sand cleaning devices 4 invested in the water canal of the same length, to a certain extent, saving the investment cost of building the water canal; and the spiral diversion groove 11 not only guides the rotation of the water flow, but also separates the sediment and water, specifically, the sediment is transported forward near the inner wall of the channel body 1 under the action of centrifugal force, and because the width and depth of the inner wall of the sand sink 3 are greater than those of the channel body 1, the sediment carried in the water flowing through the sand sink 3 is attached to the inner wall of the sand sink 3 under the action of centrifugal force, thereby maximizing the sediment remaining in the sand sink 3, thereby improving the efficiency of sedimentation.

[0046] As Figures 3 to 4 shown, the bottom of the channel body 1 is provided with a plurality of water seepage holes 12; the diameter of the water seepage hole 12 is 1.8-2.3mm; the water seepage hole 12 is distributed along the radial direction of the circular arc surface of the channel body 1.

[0047] By setting the water seepage hole 12, the water seepage hole 12 is used to balance the water pressure difference inside and outside the channel body 1, reduce the static water pressure borne by the channel body 1, and prevent the channel body 1 from cracking due to long-term water overload, thereby prolonging the service life of the channel body 1; and when the groundwater freezes and expands in winter, the water seepage hole 12 discharges the excess water in the channel body 1, thereby reducing the damage of frost heaving force to the channel body 1, and further improving the service life of the water channel.

[0048] The water seepage hole 12 with a diameter of φ2mm is arranged at an interval of 20cm, which can realize a single-hole drainage capacity of ≥0.8L / min, thereby meeting the drainage demand of the channel body 1 while avoiding excessive drainage leading to structural instability; because the hole diameter is too large, the local flow rate will increase sharply, such as the flow rate of a φ5mm hole can reach 2.5m / s, which accelerates the erosion of the hole wall; and the φ2mm hole diameter can control the hole flow rate at 0.8-1.2m / s, thereby matching the overall flow rate of the flow guide groove 11 of 1.0-1.67m / s. The data of the blocking situation of different sizes of hole diameters are as follows:

[0049]

[0050] From the table, it can be seen that the water seepage hole 12 with a diameter of φ2mm achieves the best balance between anti-blocking performance (retention of >0.5mm particles) and maintenance period (dredging frequency ≤1 time / month).

[0051] As Figure 4 shown, the water seepage hole 12 is provided with a nylon filament bundle 13 along the axial direction; the two ends of the nylon filament bundle 13 are respectively anchored on the inner wall of the flow guide groove 11 and the outer wall of the channel body 1 through a clamping buckle; and the coarse sand layer, gravel layer and geotextile are arranged from top to bottom at the position corresponding to the water seepage hole 12 of the channel body 1.

[0052] Firstly, the 28 nylon filament bundles 13 arranged in the water seepage hole 12 can better retain 0.5mm particles, and then the three-stage reverse filtration structure of coarse sand layer (2cm thick) + gravel layer (3cm thick) + geotextile can further reduce the risk of particles outside the channel body 1 blocking the water seepage hole 12 in the reverse direction, thereby achieving bidirectional anti-blocking, reducing the cleaning period of the water seepage hole 12, and improving the convenience of water channel use.

[0053] As Figure 5As shown, the cross section of the sealing strip 2 is T-shaped structure; the sealing strip 2 comprises a fixed part 21 and an impact-resistant part 22; the fixed part 21 and the impact-resistant part 22 are arranged perpendicular to each other; the fixed part 21 abuts between adjacent channel bodies 1; the impact-resistant part 22 adheres to the inner wall of the channel body 1; the impact-resistant part 22 is provided with an impact-resistant metal sheet 23 along the length direction.

[0054] The sealing strip 2 is made of rubber material, which not only can achieve good sealing, but also can adapt to the thermal expansion and contraction caused by the change of environmental temperature, and then adapt to the gap change between the two adjacent channel bodies 1 by extruding the fixed part 21; by further setting the impact-resistant part 22 on the inner side of the fixed part 21, and further setting the impact-resistant metal sheet 23 in the impact-resistant part 22, the sealing and the scouring of the water flow can be well achieved in the case of U-shaped structure and fast water flow with flow guide groove 11, thereby improving the sealing of the water channel, and avoiding the waste caused by water resource leakage.

[0055] As shown in the drawings, Figures 6 to 8 The sand cleaning device 4 is a symmetrical structure, and the symmetrical sand cleaning device 4 is symmetrically arranged on both sides of the sand trap 3; the sand cleaning device 4 comprises a filter screen 41, a tensioning rope 42, a first groove wheel 43, a second groove wheel 44, a support plate 45, a winding roller 46 and a winding motor 47; the filter screen 41 is a metal woven screen; the filter screen 41 is uniformly and interval arranged with a blocking part 411 perpendicular to the filter screen 41 along the length direction; the blocking part 411 is a strip-shaped sheet structure woven by metal wires; the blocking part 411 is perpendicular to the filter screen 41; the two side edges of the filter screen 41 are fixedly connected to one of the tensioning ropes 42; the two ends of the filter screen 41 are connected to the symmetrically arranged winding rollers 46; the filter screen 41 symmetrically passes above the first groove wheel 43; the first groove wheel 43 is rotatably connected to the two side ears of the channel body 1 through the support plate 45; the filter screen 41 symmetrically passes below the second groove wheel 44; the second groove wheel 44 is arranged at the bottom of the sand trap 3; the tensioning rope 42 passes through the notches of the first groove wheel 43 and the second groove wheel 44; the winding roller 46 is rotatably connected to the side wall of the sand trap 3 through a mounting bracket; the end of the winding roller 46 is connected to the driving shaft of the winding motor 47; the winding motor 47 is fixedly connected to the support plate 45.

[0056] The two winding motors 47 arranged symmetrically are connected with the controller through electrical signals; the power source of the winding motor 47 is provided by the solar panel and the battery; during operation, the controller controls the winding motor 47 on one side of the sand settling tank 3 to wind, while the controller controls the winding motor 47 on the other side to unwind, so as to realize the winding of the filter screen 41 and the tensioning rope 42 to one side of the sand settling tank 3 in the state of being always taut, and in the process, the blocking part 411 on the filter screen 41 blocks the sediment deposited on the filter screen 41 at the bottom of the sand settling tank, so as to prevent the sediment attached to the filter screen 41 from falling off in the process of rising, thereby realizing more efficient removal of the sediment in the sand settling tank 3; as the filter screen 41 is continuously wound, when the sediment on the filter screen 41 moves to the lower side of the winding roller 46, the sediment attached to the filter screen 41 falls off under the action of its own gravity, thereby realizing automatic removal of the sediment in the sand settling tank 3; after the sediment deposited in the sand settling tank 3 all falls off from the lower side of the winding on one side, the controller controls the two winding motors 47 to stop rotating at the same time, thereby entering the waiting of the next sedimentation period; after a certain amount of sediment is deposited in the sand settling tank 3 again, the controller controls the two winding motors 47 to rotate reversely at the same time, thereby realizing the transportation of the sediment in the sand settling tank 3 to the winding roller 46 on the other side; after cleaning, the controller controls the two winding motors 47 to stop rotating at the same time, thereby re-entering the waiting of the sedimentation period; the waiting time of the sedimentation period is adjusted according to the degree of sediment in the water source in the water channel, thereby ensuring that the sand removal device 4 can ensure that the sediment in the sand settling tank 3 can be removed in time, and also ensuring that the sand removal device 4 will not work excessively and thereby reduce the service life.

[0057] As shown in Figure 9 The rotating shaft of the first grooved wheel 43 is sleeved with a rubber sleeve 431; the rubber sleeve 431 is inserted into the mounting hole of the support plate 45; the rotating shaft of the first grooved wheel 43 is connected with the vibration element of the vibrator 432; and the vibrator 432 is fixedly connected to the support plate 45.

[0058] The vibrator 432 is connected with the controller through electrical signals; when the controller controls the winding motor 47 of the sand removal device 4 to wind, the controller controls the vibrator 432 to start working at the same time, thereby the vibrator 432 drives the first grooved wheel 43 to vibrate at high frequency and small amplitude, and thereby the first grooved wheel 43 drives the tensioning rope 42 and the filter screen 41 wound thereon to also vibrate at high frequency and small amplitude, which on the one hand realizes the timely shaking off of the water carried by the sediment on the filter screen 41, thereby accelerating the solid-liquid separation process, reducing water loss and also making the dehydrated sediment more easily fall off the filter screen 41; on the other hand, the high-frequency small-amplitude vibration also makes the sediment unable to adhere to the filter screen 41, thereby further improving the efficiency of the sediment falling off the filter screen 41, and thereby improving the sand removal effect of the sand removal device 4.

[0059] AsFigure 11 As shown in the figure, the intercepting net 48 is arranged on the filter net 41 along the length direction of the filter net 41; the intercepting net 48 is arranged on the filter net 41 close to the downstream end of the water flow; the intercepting net 48 is perpendicular to the filter net 41; and the intercepting net 48 is fixedly connected with the filter net 41.

[0060] By arranging the intercepting net 48 on one end of the filter net 41, the water flow flowing in the upstream channel body 1 obtains centrifugal force under the action of the flow guide groove 11, and the silt carried in the centrifugal force impacts on the filter net 41 of the silt settling tank 3, and the silt continuously deposited on the filter net 41 is blocked by the intercepting net 48, otherwise the silt deposited on the filter net 41 will be carried away by the water flow again, thereby improving the silt settling capacity of the silt settling tank 3 and the sand cleaning effect of the sand cleaning device 4.

[0061] As shown in the figure, Figure 8 and Figure 10 As shown in the figure, the upper portion of the winding roller 46 is provided with a guide frame 49; the guide frame 49 is arranged corresponding to the position of the intercepting net 48; the guide frame 49 is fixedly connected on the silt settling tank 3; the suspended end of the guide frame 49 is provided with a guide portion 491; and the guide portion 491 is an inclined curved surface structure inclined downward.

[0062] By arranging the guide frame 49 above the winding roller 46, when the intercepting net 48 is about to be wound on the winding roller 46 along with the filter net 41, the upper end of the intercepting net 48 abuts against the guide portion 491, and the intercepting net 48 is bent to be parallel to the filter net 41 under the extrusion of the guide portion 491 as the intercepting net 48 is continuously wound, and then the filter net 41 is wound on the winding roller 46; when the filter net 41 is reversely wound, the intercepting net 48 is gradually unfolded as the filter net 41 is unfolded from the winding roller 46, and returns to the state perpendicular to the filter net 41 under the action of its own elasticity. By arranging the guide frame 49, the intercepting net 48 is better wound, thereby improving the service life of the intercepting net 48 and well ensuring that the form of the intercepting net 48 will not be damaged, thereby ensuring the intercepting effect of the intercepting net 48.

[0063] As shown in the figure, Figure 11 As shown in the figure, a plurality of intercepting strips 412 are arranged on the filter net 41 along the width direction at intervals; the intercepting strips 412 are arranged penetratingly along the length direction of the filter net 41 and are attached to the filter net 41; and the intercepting strips 412 are made of elastic material.

[0064] By arranging the intercepting strips 412 upstream of the intercepting net 48, the silt carried in the water flow impacting on the filtering net 41 can be intercepted by the multiple intercepting strips 412, thereby preventing the silt on the filtering net 41 from being all accumulated to the intercepting net 48, and preventing the silt accumulated to a certain degree from being carried away by the water flow again due to being too high, thereby improving the silt cleaning effect of the silt cleaning device 4.

[0065] The height of the intercepting strips 412 gradually increases in a gradient; the closer to the intercepting net 48, the greater the height of the intercepting strips 412.

[0066] By arranging the height of the intercepting strips 412 to gradually increase in a gradient, the silt carried in the water flow can be more uniformly intercepted by the multiple intercepting strips 412, rather than being blocked by the intercepting strips 412 at the uppermost upstream and affecting the interception effect of the intercepting strips 412 at the rear, thereby improving the interception efficiency of the intercepting strips 412, and thereby improving the silt cleaning effect of the silt cleaning device 4.

[0067] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.

Claims

1. An agricultural irrigation water channel for use in water engineering, characterised in that: The utility model provides a sand removal device and sand removal method for sand removal, and the sand removal device comprises a channel body (1), a sealing strip (2), a sand sink (3) and a sand removal device (4), the channel body (1) is connected head to tail, and adjacent channel bodies (1) are sealed through the sealing strip (2), the cross section of the channel body (1) is U-shaped, spiral flow grooves (11) are formed on the inner wall of the channel body (1), one sand sink (3) is arranged at intervals of several channel bodies (1), the depth of the sand sink (3) is greater than the depth of the channel body (1), the end faces of the sand sink (3) and the channel bodies (1) on both sides are sealed through building structural adhesive, the sand removal device (4) is arranged in the sand sink (3), and the sand removal device (4) is used for removing sand in the sand sink (3). The sand removal device (4) is a symmetrical structure, the symmetrical sand removal device (4) is arranged on both sides of the sand sink (3), the sand removal device (4) comprises a filter screen (41), a tensioning rope (42), a first groove wheel (43), a second groove wheel (44), a support plate (45), a winding roller (46) and a winding motor (47), the filter screen (41) is a metal woven screen, the filter screen (41) is uniformly and intervally provided with a blocking part (411) perpendicular to the filter screen (41) along the length direction, the blocking part (411) is a strip-shaped piece structure woven by metal wires, the blocking part (411) is perpendicular to the filter screen (41), the two side edges of the filter screen (41) are fixedly connected to one tensioning rope (42) respectively, the two ends of the filter screen (41) are connected to the winding rollers (46) arranged symmetrically, the filter screen (41) symmetrically passes above the first groove wheel (43), the first groove wheel (43) is rotatably connected to the ears on both sides of the channel body (1) through the support plate (45), the filter screen (41) symmetrically passes below the second groove wheel (44), the second groove wheel (44) is arranged at the bottom of the sand sink (3), the tensioning rope (42) passes through the notches of the first groove wheel (43) and the second groove wheel (44), the winding roller (46) is rotatably connected to the side wall of the sand sink (3) through a mounting frame, the end of the winding roller (46) is connected to the driving shaft of the winding motor (47), and the winding motor (47) is fixedly connected to the support plate (45).

2. An agricultural irrigation canal for use in hydraulic engineering according to claim 1, characterized in that: A plurality of water seepage holes (12) are arranged at intervals at the bottom of the flow groove (11) of the channel body (1), the diameter of the water seepage hole (12) is 1.8-2.3 mm, and the water seepage holes (12) are distributed along the radial direction of the arc surface of the channel body (1).

3. An agricultural irrigation canal for use in hydraulic engineering according to claim 2, characterized in that: A nylon filament bundle (13) is arranged in the water seepage hole (12) in the axial direction, the two ends of the nylon filament bundle (13) are respectively anchored on the inner wall of the flow groove (11) and the outer wall of the channel body (1) through a clamping buckle, and a coarse sand layer, a gravel layer and a geotextile are arranged from top to bottom below the channel body (1) corresponding to the positions of the water seepage holes (12).

4. An agricultural irrigation canal for use in hydraulic engineering according to claim 1, characterized in that: The cross section of the sealing strip (2) is T-shaped structure; the sealing strip (2) comprises a fixed part (21) and an impact resistance part (22); the fixed part (21) and the impact resistance part (22) are arranged perpendicularly to each other; the fixed part (21) abuts between adjacent channel bodies (1); the impact resistance part (22) is attached to the inner wall of the channel body (1); the impact resistance part (22) is provided with an impact resistance metal sheet (23) along the length direction.

5. An agricultural irrigation canal for hydraulic engineering according to claim 1, characterized in that: The rotating shaft of the first groove wheel (43) is sleeved with a rubber sleeve (431); the rubber sleeve (431) is inserted into the mounting hole of the support plate (45); the rotating shaft of the first groove wheel (43) is connected with the vibration element of the vibrator (432); the vibrator (432) is fixedly connected to the support plate (45).

6. An agricultural irrigation canal for hydraulic engineering according to claim 1, characterized in that: The intercepting net (48) is arranged on the filter net (41) along the length direction of the filter net (41); the intercepting net (48) is arranged on the filter net (41) close to the downstream end of the water flow; the intercepting net (48) is perpendicular to the filter net (41); the intercepting net (48) is fixedly connected with the filter net (41).

7. An agricultural irrigation canal for use in hydraulic engineering according to claim 6, characterized in that: The upper part of the winding roller (46) is provided with a guide frame (49); the guide frame (49) is arranged corresponding to the position of the intercepting net (48); the guide frame (49) is fixedly connected to the sand sink (3); the suspended end of the guide frame (49) is provided with a guide part (491); the guide part (491) is a downward inclined curved surface structure.

8. An agricultural irrigation canal for use in hydraulic engineering according to claim 7, characterized in that: A plurality of intercepting strips (412) are arranged on the filter net (41) along the width direction; the intercepting strips (412) are attached to the filter net (41) and are arranged through along the length direction of the filter net (41); the intercepting strips (412) are made of elastic material.

9. An agricultural irrigation canal for use in hydraulic engineering according to claim 8, characterized in that: The height of the intercepting strip (412) gradually increases in gradient; the closer to the intercepting net (48), the greater the height of the intercepting strip (412).

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