Water conservancy irrigation channel with impurity removing function

Abstract

The utility model relates to the technical field of water conservancy irrigation discloses a water conservancy irrigation channel with impurity removing function, including channel body, the buffer filter mechanism of setting in the channel body, channel body includes the side wall of canal bottom and canal bottom both sides, the buffer filter mechanism still includes the arc buffer baffle of setting in the buffer filter space and the opening with water flow direction is opposite, and the interval between buffer baffle end and side plate forms filter mouth, and is equipped with filter plate at filter mouth, through the setting of buffer filter mechanism, filter plate is located at both sides of channel body, avoids the direct action of water flow on filter plate, and reduces the impact load that filter plate receives from the root, on the other hand, under the action of buffer baffle, water flow carries out once buffering, then water flow enters the circuitous space and realizes secondary buffering, thereby reducing water flow kinetic energy, further reduces the impact of water flow on filter plate.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy and irrigation technology, specifically relating to a water conservancy irrigation canal with a debris removal function. Background Technology

[0002] Irrigation is a key agricultural technology and engineering measure that artificially introduces water into farmland to supplement insufficient natural rainfall and meet the water needs for crop growth. Currently, irrigation canals are mostly used as the water diversion medium to connect the irrigation water source with the irrigated land.

[0003] However, in actual operation, debris such as sand, gravel, soil, fallen leaves, and plastic products from both sides of the canal will enter the irrigation canal under the influence of water and wind. On the one hand, mud, sand, and branches will settle at the bottom of the canal, which will not only affect the normal flow of irrigation water, but also cause the water level to rise continuously, eventually leading to the irrigation water overflowing the canal, wasting water resources and affecting the irrigation effect. On the other hand, mud and sand will flow into farmland with the water, which will damage the soil structure. Specifically, a large amount of mud and sand will change the original sand, silt, and clay ratio of farmland soil. Too much sand will make the soil loose and prone to water and fertilizer leakage, while too much clay will make the soil compacted and poorly aerated. In addition, plastic products flowing into farmland will not only cause chemical pollution and ecological damage to the soil, but microplastics will also enter the food chain and cause harm to human health.

[0004] In the prior art, filters are typically used to filter debris in channels. For example, patent (CN223033953U) discloses a water conservancy channel design structure, including a channel body, a fixed frame, and a folding filter. The fixed frame is mounted on the channel body, and a bearing seat is embedded in the fixed frame. A handle is mounted in the middle of the bearing seat, and a threaded rod is threaded onto the middle of the handle. An outer frame is positioned directly below the threaded rod, and a folding filter is mounted in the middle of the outer frame. The outer frame is fixedly connected to the bottom end of the threaded rod. A debris-blocking plate is mounted on the bottom of the side of the outer frame opposite to the water flow direction. The channel body has evenly spaced insertion holes, each containing a column, and a protective net is installed between adjacent columns. Its advantages lie in the fact that by setting up a folded filter screen, the contact area between the filter screen and the water in the irrigation canal can be increased, that is, the filter screen has a larger filtration area, which makes the water flow in the canal better and less prone to clogging. However, it also has the following disadvantages: the filter screen is directly opposite the flow channel of the irrigation canal, and the filter screen will be subjected to the impact of water flow and debris, especially large particles of sand or wood, which will have a more significant impact load on the filter screen, thus causing the filter screen to deform. In severe cases, the filter screen will be damaged and the entire filtration device will fail. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a water conservancy irrigation canal with impurity removal function, so as to solve the technical problem that the filter screen in the prior art is deformed or even destroyed due to continuous impact load.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An irrigation canal with impurity removal function includes a canal body, a buffer filtration mechanism installed inside the canal body, and a scum removal mechanism installed above the canal body. The canal body includes a canal bottom and side walls on both sides of the canal bottom, which together form a water flow channel. There are notches at the corresponding positions where the buffer filtration mechanism is installed on the side walls. The buffer filtration mechanism includes an arc-shaped side plate installed outside the notch with its opening facing the flow channel. A bottom plate is provided below the side plate, which seals the gap between the canal bottom and the side plate. The side plate and the bottom plate are set on the canal body to form a circular buffer filtration space. The buffer filtration mechanism also includes an arc-shaped buffer baffle installed inside the buffer filtration space with its opening facing the direction of water flow. The gap between the end of the buffer baffle and the side plate forms a filter port. A filter plate is provided at the filter port, and the water can only pass through the filter port after being filtered by the filter plate.

[0008] Furthermore, an inlet is formed between the buffer filtration space and the upstream sidewall, and an outlet is formed between the buffer filtration space and the downstream sidewall.

[0009] Furthermore, the buffer baffle is located between the inlet and the outlet, and there is a gap between the buffer baffle and the two side plates. The virtual connection between the two endpoints of the buffer baffle is perpendicular to the water flow direction and coincides with the virtual center of the buffer filtration space.

[0010] Furthermore, extension plates are provided on both sides of the inlet. The extension plates extend along the water flow direction and are spaced apart from the buffer baffle. The extension plates guide the water entering the buffer filtration space, ensuring that the water flow directly acts on the buffer baffle.

[0011] Furthermore, the side plate is also equipped with a slag removal assembly, which includes an arc-shaped limiting groove on the top surface of the side plate. The limiting groove extends vertically to the bottom surface of the buffer filtration space. A through slag removal port is opened on the side of the side plate. The bottom edge of the slag removal port coincides with the bottom surface of the buffer filtration space. The limiting groove can cover the slag removal port. A sealing plate is slidably connected in the limiting groove. The sealing plate and the limiting groove are identical in shape and size. The opening and closing of the slag removal port is achieved by sliding the sealing plate up and down.

[0012] Furthermore, the scum removal mechanism includes a fixed plate mounted above the channel body. A pad is provided on the front of the fixed plate, which is located directly above the channel body. A first connecting shaft perpendicular to the surface of the fixed plate is welded at the center of the pad. A first connecting rod is rotatably connected to the first connecting shaft. A motor is also provided on one side of the pad, which is connected and fixed to the back of the fixed plate. The output shaft of the motor passes through the fixed plate and protrudes from the front of the fixed plate. A second connecting rod is fixedly connected to the free end of the output shaft. A second connecting shaft is provided at the end of the first connecting rod near the first connecting shaft, and a third connecting shaft is provided at the end of the second connecting rod away from the output shaft. A third connecting rod is provided between the second connecting shaft and the third connecting shaft. The two ends of the third connecting rod are rotatably connected to the second connecting shaft and the third connecting shaft, respectively. An extension rod is provided at the free end of the first connecting rod, and multiple grid bars are fixedly connected to the side of the extension rod away from the first connecting shaft.

[0013] Furthermore, the extension direction of the grid bar is consistent with the extension direction of the first connecting rod. When the first connecting rod and the grid bar move to a vertical position, the grid bar penetrates into the water.

[0014] Furthermore, the projection of the axis of the first connecting shaft in the vertical direction is exactly located in the middle of the two side walls;

[0015] Furthermore, there is a gap between the output shaft and the first connecting shaft, and the output shaft is located above the first connecting shaft;

[0016] Furthermore, the length of the second link is less than the distance between the output shaft and the first connecting shaft.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) Compared with the prior art, by setting up a buffer filtration mechanism, on the one hand, the filter plate is located on both sides of the channel body, avoiding the direct action of water flow on the filter plate, thus reducing the impact load on the filter plate from the source; on the other hand, under the action of the buffer baffle, the water flow is buffered once, and then the water flow enters the meandering space to achieve secondary buffering, thereby reducing the kinetic energy of the water flow and further reducing the impact of the water flow on the filter plate. In this way, it can effectively prevent the filter plate from deforming and being damaged, ensuring the filtration effect while improving the service life of the filter plate;

[0019] (2) By setting up a scum removal mechanism, on the one hand, floating objects on the water surface can be removed in time to prevent them from occupying the cross-sectional area of ​​the ditch and affecting the water conveyance capacity, and to avoid excessive accumulation of floating objects that could cause blockage of the channel body; on the other hand, floating objects can be prevented from accumulating on the filter plate or filter screen, which would affect the filtration effect and increase the load, leading to damage to the filter plate or filter screen. Attached Figure Description

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0021] Figure 1 This is a schematic diagram of the overall structure of the irrigation canal with impurity removal function in Embodiment 1 of this utility model (the first connecting rod swings to the highest point on one side).

[0022] Figure 2 This is a schematic diagram of the overall structure of the irrigation canal with impurity removal function in Embodiment 1 of this utility model (the first connecting rod swings to the highest point on the other side).

[0023] Figure 3 for Figure 1 Top view;

[0024] Figure 4 for Figure 1 Enlarged view at point A1;

[0025] Figure 5 for Figure 3 Enlarged view at point A2;

[0026] Figure 6 for Figure 1 Enlarged view at point A3;

[0027] Figure 7 for Figure 6 Enlarged view at A4 in the middle.

[0028] The following labels are shown in the attached diagram:

[0029] Channel body 1, channel bottom 101, side wall 102, notch 103, buffer filter mechanism 2, side plate 201, bottom plate 202, buffer baffle 203, extension plate 204, slot 205, filter plate 206, limiting groove 207, slag removal port 208, sealing plate 209, scum removal mechanism 3, fixing plate 301, support 302, diagonal brace 303, pad 304, first connecting shaft 305, first connecting rod 3051, second connecting rod 306, motor 307, output shaft 3071, second connecting shaft 308, third connecting shaft 309, third connecting rod 310, limiting ring 311, extension rod 312, grid bar 313, yielding notch 314, wedge block 315. Detailed Implementation

[0030] Example 1, specifically as follows: Figures 1-6 As shown.

[0031] A water conservancy irrigation canal with impurity removal function includes a canal body 1, a buffer filtration mechanism 2 installed inside the canal body 1, and a scum removal mechanism 3 installed above the canal body 1.

[0032] like Figure 1As shown, the channel body 1 includes a channel bottom 101 and side walls 102 on both sides of the channel bottom 101. The channel bottom 101 and the side walls 102 together form a water flow channel. In this embodiment, the included angle between the side walls 102 and the channel bottom 101 is 90°.

[0033] Adjacent single buffer filter mechanism 2 and single scum removal mechanism 3 together form a complete impurity removal unit. The impurity removal units are distributed at intervals on the channel body 1. It is worth emphasizing that in the impurity removal unit, the scum removal mechanism 3 is located upstream of the buffer filter mechanism 2.

[0034] like Figure 1 As shown, notches 103 are provided at corresponding positions on the side walls 102 where the buffer filter mechanism 2 is installed. The buffer filter mechanism 2 includes an arc-shaped side plate 201 disposed outside the notch 103 with its opening facing the flow channel. The notch is sealed by the side plate 201. In this embodiment, the end face of the side plate 201 is flush with the inner wall of the side wall 102, and the top face of the side plate 201 is flush with the top face of the side wall 102. It should be further noted that the two ends of the side plate 201 are fixedly connected to the two sides of the notch 103, and the connection method can be bolt anchoring or post-poured concrete.

[0035] An arched base plate 202 is provided below the side plate 201. The base plate 202 seals the gap between the channel bottom 101 and the side plate 201. Specifically, the straight edge of the base plate 202 abuts against the channel bottom 101, and the upper surface of the base plate 202 coincides with the upper surface of the channel bottom 101. The side plate 201 sits on the base plate 202, and the outer arc surface of the side plate 201 is flush with the arc surface of the base plate 202. The connection between the base plate 202 and the channel bottom 101, as well as the connection between the base plate 202 and the side plate 201, can be fixed by bolt anchoring or post-poured concrete. By setting the side plate 201 and the base plate 202 on the foundation of the channel body 1, a circular buffer filtration space is formed. The buffer filtration space forms an inlet between itself and the upstream side wall 102, and the buffer filtration space forms an outlet between itself and the downstream side wall 102.

[0036] The buffer filtration mechanism 2 also includes an arc-shaped buffer baffle 203 disposed within the buffer filtration space with its opening facing the direction of water flow. The buffer baffle 203 is located between the inlet and outlet, and a gap is left between the buffer baffle 203 and the two side plates 201. The gap between the end of the buffer baffle 203 and the side plates 201 forms a filter opening. It is worth noting that, in this embodiment, the virtual line connecting the two endpoints of the buffer baffle 203 is perpendicular to the direction of water flow and coincides with the virtual center of the buffer filtration space. The buffer baffle 203 is fixedly connected to the bottom of the buffer filtration space by cast-in-place method.

[0037] Extension plates 204 are provided on both sides of the inlet. The extension plates 204 extend along the water flow direction and are spaced apart from the buffer baffle 203. The fixed end of the extension plate 204 is located at the end of the side plate 201 near the inlet. Its inner plate surface is in the same plane as the inner wall of the side wall 102. The extension plate 204 and the side plate 201 are integrally formed, and a meandering space is formed between the extension plate 204 and the side plate 201. By setting the extension plates 204, the water entering the buffer filtration space is guided, ensuring that the water flow directly acts on the buffer baffle 203.

[0038] A filter plate 206 is installed at the filter inlet. Water flows through the filter plate 206 and is filtered before passing through the filter inlet. The surface of the filter plate 206 is perpendicular to the water inlet direction. Specifically, as shown... Figure 4 As shown, slots 205 are provided at the two ends of the buffer baffle 203 and at the corresponding positions on the inner wall of the side plate 201. The filter plate 206 is inserted along the slots 205. Pressure blocks are provided on both sides of the top of the filter plate 206. The pressure blocks on both sides contact the top surface of the side plate 201 and the top surface of the buffer baffle 203 respectively, and are connected by screws to prevent the filter plate 206 from slipping during operation.

[0039] The side panel 201 is also equipped with a slag removal component, such as... Figure 5 As shown, the slag removal assembly includes an arc-shaped limiting groove 207 on the top surface of the side plate 201. The limiting groove 207 extends vertically to the bottom surface of the buffer filtration space. A through slag removal opening 208 is opened on the side of the side plate 201, and the bottom edge of the slag removal opening 208 coincides with the bottom surface of the buffer filtration space. The limiting groove 207 can cover the slag removal opening 208. A sealing plate 209 is slidably connected inside the limiting groove 207. In this embodiment, the sealing plate 209 and the limiting groove 207 have the same shape and size. The opening and closing of the slag removal opening 208 is achieved by the up and down sliding of the sealing plate 209. In addition, the sealing plate 209 is made of stainless steel or other metal materials, and its own weight is relatively large. It can effectively seal the slag removal opening 208 by its own weight alone, and will not slide vertically under the action of water.

[0040] In use, water first flows into the buffer filtration space through the inlet. Under the guidance of the extension plate 204, the water flows directly onto the buffer baffle 203. The buffer baffle 203 acts as a buffer, and the water flows into the meandering space along both sides of the buffer baffle 203. The water flowing into the meandering space is filtered by the filter plate 206 and then flows through the filter port into the downstream channel.

[0041] By configuring the buffer filtration mechanism 2, on the one hand, the filter plates 206 are located on both sides of the channel body 1, preventing the water flow from directly acting on the filter plates 206 and reducing the impact load on the filter plates 206 from the source; on the other hand, under the action of the buffer baffle 203, the water flow is buffered once, and then the water flow enters the meandering space for secondary buffering, thereby reducing the kinetic energy of the water flow and further reducing the impact of the water flow on the filter plates 206. In this way, it is possible to effectively prevent the filter plates 206 from deforming or being damaged, ensuring the filtration effect while extending the service life of the filter plates 206.

[0042] During long-term operation, a large amount of sand and other debris will accumulate in the detour space. To remove this debris, the sealing plate 209 can be pulled out of the limiting groove 207.

[0043] However, floating objects such as branches, plastics, and weeds often float on the water surface, which can also affect irrigation. For example, floating objects occupy the cross-sectional area of ​​ditches, reducing the effective water flow area and decreasing the water delivery capacity. Floating objects accumulate on filter plates or filter screens, which not only reduce the filter surface and affect the filtration effect, but also increase the load and cause damage to the filter plates or filter screens.

[0044] Based on this, a scum removal mechanism 3 is provided upstream of the buffer filtration mechanism 2, such as... Figure 1 , Figure 3 As shown, the scum removal mechanism 3 includes a fixing plate 301 mounted above the channel body 1. An "L"-shaped support 302 is welded to the bottom of the fixing plate 301, and the support 302 is connected and fixed to the top surface of the side wall 102 by screws. A diagonal brace 303 is also welded to the back of the fixing plate 301 on the side away from the buffer filter mechanism 2, and the diagonal brace 303 is also connected and fixed to the top surface of the side wall 102 by screws.

[0045] like Figure 6 , Figure 7 As shown, a pad 304 is welded to the front of the fixing plate 301. The pad 304 is located directly above the channel body 1. A first connecting shaft 305 perpendicular to the surface of the fixing plate 301 is welded to the center of the pad 304. The projection of the axis of the first connecting shaft 305 in the vertical direction is exactly located in the middle of the two side walls 102. A first connecting rod 3051 is rotatably connected to the first connecting shaft 305.

[0046] A motor 307 is also provided on one side of the pad 304. The motor 307 is fixed to the back of the fixing plate 301 by bolts. The output shaft 3071 of the motor 307 passes through the fixing plate 301 and protrudes from the front of the fixing plate 301. There is a gap between the output shaft 3071 and the first connecting shaft 305, and the output shaft 3071 is located above the first connecting shaft 305.

[0047] A second connecting rod 306 is fixedly connected to the free end of the output shaft 3071, and the output shaft 3071 and the second connecting rod 306 are connected by a key. It should be noted that the length of the second connecting rod 306 is less than the distance between the output shaft 3071 and the first connecting shaft 305. A second connecting shaft 308 is welded to the end of the first connecting rod 3051 near the first connecting shaft 305. In this embodiment, the distance between the second connecting shaft 308 and the first connecting shaft 305 is one-third of the length of the first connecting rod 3051.

[0048] A third connecting shaft 309 is welded to one end of the second connecting rod 306 away from the output shaft 3071. A third connecting rod 310 is provided between the second connecting shaft 308 and the third connecting shaft 309. The two ends of the third connecting rod 310 are rotatably connected to the second connecting shaft 308 and the third connecting shaft 309, respectively.

[0049] It is worth emphasizing that a limiting ring 311 is fitted at the free end of the first connecting shaft 305, the second connecting shaft 308, and the third connecting shaft 309. The limiting ring 311 is welded and fixed to the above three components. The limiting ring 311 limits the first connecting rod 3051 and the third connecting rod 310 to prevent them from detaching.

[0050] An extension rod 312 is welded to the free end of the first connecting rod 3051. The extension rod 312 extends along the water flow direction. Multiple grid bars 313 are welded to the side of the extension rod 312 away from the first connecting shaft 305. The grid bars 313 are evenly spaced along the extension direction of the extension rod 312. It is worth noting that the extension direction of the grid bars 313 is consistent with the extension direction of the first connecting rod 3051. When the first connecting rod 3051 and the grid bars 313 move to a vertical position, the grid bars 313 penetrate into the water.

[0051] In this embodiment, a recessed notch 314 corresponding to the grid bars 313 is provided at the top of the side wall 102. The bottom surface of the recessed notch 314 is inclined, with its inner side lower than its outer side. The length of the recessed notch 314 is greater than the distribution range of the grid bars 313. A wedge-shaped stop 315 is provided on the outer side of the recessed notch 314. The wedge-shaped stop 315 is cast in shape, with its inner side overlapping the bottom surface of the recessed notch 314. The top surface of the wedge-shaped stop 315 is flush with the top surface of the side wall 102. The recessed notch 314 is extended and closed by the inner side of the wedge-shaped stop 315 and the baffles on both sides of the wedge-shaped stop 315. The space formed by the wedge-shaped stop 315 and the recessed notch 314 not only ensures the normal water level but also effectively prevents the grid bars 313 from colliding with the side wall 102 during movement. It also increases the water depth of the grid bars 313 and the retrieval range.

[0052] In operation, the motor 307 drives the second connecting rod 306 to rotate around the output shaft 3071. Driven by the second connecting rod 306, one end of the third connecting rod 310 rotates, while the other end of the third connecting rod 310 drives the first connecting rod 3051 to oscillate back and forth around the first connecting shaft 305. Simultaneously, the grid bars 313 retrieve floating objects from the water surface. Figure 1 , Figure 2 As shown, when the first link 3051 swings to the highest point on both sides, the grid bar 313 is located outside the channel body 1. Under the action of inertia and gravity, the floating objects detach from the grid bar 313 and fall or slide down along the grid bar 313 to the outside of the channel body 1, thereby realizing the removal of floating objects.

[0053] By setting up the scum removal mechanism 3, on the one hand, floating objects on the water surface are promptly removed to prevent them from occupying the cross-sectional area of ​​the ditch, affecting the water conveyance capacity, and avoiding excessive accumulation of floating objects that could block the channel body; on the other hand, floating objects are prevented from accumulating on the filter plates or filter screens, which would affect the filtration effect and increase the load, leading to damage to the filter plates or filter screens.

[0054] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A water conservancy irrigation canal with a debris removal function, characterized in that, The system includes a channel body, a buffer filtration mechanism installed within the channel body, and a scum removal mechanism installed above the channel body. The channel body includes a channel bottom and side walls on both sides of the channel bottom, which together form a water flow channel. At corresponding positions on the side walls where the buffer filtration mechanism is installed, there are notches. The buffer filtration mechanism includes an arc-shaped side plate located outside the notch with its opening facing the flow channel. A bottom plate is located below the side plate, sealing the gap between the channel bottom and the side plate. The side plate and bottom plate, installed on the channel body, together form a circular buffer filtration space. The buffer filtration mechanism also includes an arc-shaped buffer baffle located within the buffer filtration space with its opening facing the direction of water flow. The gap between the end of the buffer baffle and the side plate forms a filter opening, where a filter plate is installed. Water flows through the filter plate before passing through the filter opening.

2. The irrigation canal with impurity removal function according to claim 1, characterized in that, An inlet is formed between the buffer filtration space and the upstream sidewall, and an outlet is formed between the buffer filtration space and the downstream sidewall.

3. The irrigation canal with impurity removal function according to claim 2, characterized in that, The buffer baffle is located between the inlet and outlet, and there is a gap between the buffer baffle and the two side plates. The virtual connection between the two ends of the buffer baffle is perpendicular to the water flow direction and coincides with the virtual center of the buffer filtration space.

4. The irrigation canal with impurity removal function according to claim 2, characterized in that, Extension plates are provided on both sides of the inlet. The extension plates extend along the water flow direction and are spaced apart from the buffer baffle. The extension plates guide the water entering the buffer filtration space, ensuring that the water flow directly acts on the buffer baffle.

5. The irrigation canal with impurity removal function according to claim 1, characterized in that, The side plate is also equipped with a slag removal assembly, which includes an arc-shaped limiting groove on the top surface of the side plate. The limiting groove extends vertically to the bottom surface of the buffer filtration space. A through slag removal port is opened on the side of the side plate. The bottom edge of the slag removal port coincides with the bottom surface of the buffer filtration space. The limiting groove can cover the slag removal port. A sealing plate is slidably connected in the limiting groove. The sealing plate and the limiting groove are identical in shape and size. The opening and closing of the slag removal port is achieved by sliding the sealing plate up and down.

6. The irrigation canal with impurity removal function according to claim 1, characterized in that, The scum removal mechanism includes a fixed plate mounted above the channel body. A pad is provided on the front of the fixed plate, which is located directly above the channel body. A first connecting shaft perpendicular to the fixed plate is welded at the center of the pad. A first connecting rod is rotatably connected to the first connecting shaft. A motor is also provided on one side of the pad, which is fixed to the back of the fixed plate. The output shaft of the motor passes through the fixed plate and protrudes from the front of the fixed plate. A second connecting rod is fixedly connected to the free end of the output shaft. A second connecting shaft is provided at the end of the first connecting rod near the first connecting shaft, and a third connecting shaft is provided at the end of the second connecting rod away from the output shaft. A third connecting rod is provided between the second and third connecting shafts. The two ends of the third connecting rod are rotatably connected to the second and third connecting shafts, respectively. An extension rod is provided at the free end of the first connecting rod, and multiple grid bars are fixedly connected to the side of the extension rod away from the first connecting shaft.

7. The irrigation canal with impurity removal function according to claim 6, characterized in that, The extension direction of the grid bar is consistent with the extension direction of the first connecting rod. When the first connecting rod and the grid bar move to a vertical position, the grid bar penetrates into the water.

8. The irrigation canal with impurity removal function according to claim 6, characterized in that, The projection of the axis of the first connecting shaft in the vertical direction is exactly in the middle of the two side walls.

9. The irrigation canal with impurity removal function according to claim 8, characterized in that, There is a gap between the output shaft and the first connecting shaft, and the output shaft is located above the first connecting shaft.

10. The irrigation canal with impurity removal function according to claim 9, characterized in that, The length of the second link is less than the distance between the output shaft and the first connecting shaft.

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