High-standard drainage channel for farmland irrigation

Abstract

The utility model relates to the technical field of drainage channels, and particularly discloses a high-standard drainage channel for farmland irrigation. According to the scheme, the two sets of cutting tools are arranged in the drainage channel body, the blades of the two sets of cutting tools are staggered, the driving mechanism drives the cutting tools to do opposite reciprocating motion in the depth direction of the channel, and when water flow carries large-size sundries such as branches and straw to pass through, the staggered blades form shearing force on the sundries in the opposite motion process, for example, the sundries can be cut through the cutting tools. When the upstream cutter moves downwards, the downstream cutter synchronously moves upwards, a continuous cutting effect is generated in a blade staggered area, and as the moving direction of the cutters is perpendicular to the water flow direction, sundries are repeatedly cut off when flowing through the cutting area and are finally crushed into small particles capable of passing through the section of a channel.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of drainage channels, in particular to a high-standard farmland irrigation drainage channel. BACKGROUND

[0002] High-standard farmland construction is an important foundation for the development of modern agriculture, and its core goal is to improve water resource utilization efficiency and ensure stable and high grain yield through systematic and standardized farmland water conservancy facilities. As a key component of the high-standard farmland irrigation system, the drainage channel undertakes the core functions of flood control, groundwater level regulation and soil moisture balance. Especially in areas with frequent heavy rains or high groundwater levels, the smoothness and structural stability of the drainage channel directly affect the disaster resistance of farmland and the growth environment of crops.

[0003] In practical applications, it is found that during the operation of the drainage channel, large-volume debris such as branches and crop stalks may be mixed into the channel due to upstream erosion or human factors. Such debris accumulates in the channel bends and drop-in areas along with the water flow, gradually forming a physical blockage, which narrows the water passage section and sharply reduces the drainage efficiency. Therefore, it is necessary to improve the existing drainage channel. CONTENT OF THE INVENTION

[0004] In order to improve and solve the defect that the drainage channel is easily blocked by large-volume debris and causes sharp drainage reduction, the application provides a high-standard farmland irrigation drainage channel.

[0005] The application provides a high-standard farmland irrigation drainage channel, which adopts the following technical scheme:

[0006] A high-standard farmland irrigation drainage channel, comprising a drainage channel body and two groups of cutting knives arranged in the drainage channel body, the cutting knives comprising a plurality of spaced-apart blades, the plurality of blades of the two cutting knives being arranged in a staggered manner, and two groups of driving mechanisms being further installed on the drainage channel body, the two driving mechanisms being used to drive the corresponding cutting knives to make opposite reciprocating movements along the depth direction of the drainage channel body.

[0007] By adopting the technical scheme, two groups of cutting knives are arranged in the drainage channel body, the blades of the two groups of knives are staggered, and the knives are driven to move reciprocatingly in opposite directions along the depth direction of the channel. When the water flow carrying branches, straws and other bulky sundries passes through, the staggered blades form shearing force on the sundries in the opposite movement, for example, when the upstream knife moves downward, the downstream knife moves upward synchronously, so that the staggered area of the blades generates continuous cutting effect. Since the movement direction of the knives is perpendicular to the direction of the water flow, the sundries are repeatedly cut off when passing through the cutting area, and are finally broken into small particles that can pass through the channel section. The design enhances the cutting efficiency by the differential reciprocating movement of the knives, and compared with the traditional fixed knives or one-way rotating knives, the breaking rate of fiber sundries (such as straws) is increased by more than 50%, and the jamming problem caused by the winding of long sundries around the knife shaft is effectively prevented, and the risk of channel blockage is significantly reduced.

[0008] Optionally, a top plate is mounted on the top of the drainage channel body, two side plates are fixedly mounted on the side edges of the top plate, and the two side plates are arranged in abutment with the inner wall of the drainage channel body. The driving mechanism comprises a rotating shaft, a water wheel, an eccentric block, a fixed rod and an elastic member. The rotating shaft is rotatably mounted on the side plate, the water wheel is coaxially fixed on the rotating shaft, the wheel surface of the water wheel faces the flowing direction of the water flow in the drainage channel body, the eccentric block is fixed on the end of the rotating shaft, the fixed rod is movably mounted on the top plate and can move in a direction perpendicular to the top plate, one end of the fixed rod is aligned with the side edge of the eccentric block, the other end is fixedly connected with the cutting knife, and the elastic member is sleeved on the fixed rod and can provide a force for the fixed rod to move towards the eccentric block.

[0009] By adopting the technical scheme, in the driving mechanism, the rotating shaft captures the kinetic energy of the water flow through the water wheel, the water flow impacts the water wheel blades to drive the rotating shaft to rotate, and the eccentric block coaxially fixed with the rotating shaft rotates. The rotational movement of the eccentric block is converted into linear reciprocating movement through the fixed rod: when the long axis end of the eccentric block pushes the fixed rod, the fixed rod compresses the elastic member and moves away from the water wheel, driving the cutting knife to move towards the bottom of the channel; when the short axis end of the eccentric block turns to the fixed rod, the elastic member releases potential energy and pushes the fixed rod and the knife to reset to the initial position. This design directly converts the kinetic energy of the water flow into cutting power without external power, and is particularly suitable for remote farmland; the pre-tightening force of the elastic member can be adjusted to adapt to different water flow conditions, ensuring the continuity of the movement of the knife and avoiding the instability of the movement caused by the fluctuation of the flow rate.

[0010] Optionally, the plurality of blades of the two cutting knives are staggered.

[0011] By adopting the technical scheme, the blades of the two sets of cutting tools are staggered, that is, the blade gap of the upstream tool is directly opposite the blade solid area of the downstream tool. When the tools make opposite reciprocating movements, the downward cutting of the upstream tool and the upward lifting of the downstream tool form a dynamic shearing grid. Compared with parallel blade layout, the staggered design increases the cutting contact area, and the alternating movement of the blades forms a "dynamic gate" effect, which can intercept large-volume debris and also allows small particles after crushing to pass through the water flow, realizing the synchronous performance of drainage and dredging, and improving the efficiency of the channel.

[0012] Optionally, a protective shell is fixed on the top plate, and the protective shell covers the eccentric block, the elastic member, and part of the fixing rod.

[0013] By adopting the technical scheme, the protective shell covers the eccentric block, the elastic member, and the upper part of the fixing rod, preventing the splashing of silt and debris in the channel from entering the inside of the driving mechanism. For example, when the tool cuts straw, the splashing debris is blocked by the protective shell, avoiding the invasion of the gap between the eccentric block and the rotating shaft, and reducing the risk of wear and tear. At the same time, the bottom of the protective shell is provided with a drainage hole, allowing a small amount of water to seep out, avoiding internal water corrosion. This design prolongs the service life of the driving mechanism to more than 5 years, and the shell is connected by bolts, which is convenient for disassembly and maintenance, and reduces the operation and maintenance cost caused by the rusting of parts.

[0014] Optionally, the two side plates are provided with filter plates on the water-approaching side of the water flow in the drainage channel body.

[0015] By adopting the technical scheme, the inclined filter plates provided on the water-approaching side of the side plates are provided with a plurality of filter holes, which preliminarily intercept oversized debris (such as stones and thick branches) and make them stay on the front side of the filter plate, allowing only the debris that can pass through the cutting area to enter the tool working area. The presence of the filter holes divides part of the water flow, reduces the flow pressure directly impacting the cutting tool, and avoids the accumulation of unbroken debris upstream of the cutting tool, reducing the risk of overload of the cutting tool and reducing the overall system load.

[0016] Optionally, the two filter plates are both provided in an inclined manner, and the two filter plates are provided in a converging manner along the water flow direction.

[0017] By adopting the technical scheme, the two filter plates are provided in a converging manner along the water flow direction, so that the water flow produces a centripetal convergence effect when passing through the filter plates. When the debris approaches the filter plates with the water flow, the converging structure guides the debris to concentrate in the central area of the channel, improving the action density of the cutting tool. At the same time, the inclined design makes the debris accumulated on the front side of the filter plate slide to the side wall of the channel under the action of gravity, avoiding complete blockage of the water passage cross section, and ensuring that the drainage capacity can still be maintained under extreme working conditions.

[0018] In summary, the present application has at least one of the following beneficial technical effects:

[0019] The scheme is characterized in that two groups of cutting knives are arranged in the drainage channel body, the blades of the two groups of knives are staggered, the knives are driven to move reciprocally in the depth direction of the channel by a driving mechanism, when the water flow carries large-volume sundries such as branches and straws, the staggered blades form shearing force on the sundries in the opposite movement, for example, when the upstream knife moves downward, the downstream knife moves upward synchronously, so that the staggered blades continuously cut in the staggered area, since the movement direction of the knives is perpendicular to the water flow direction, the sundries are repeatedly cut when flowing through the cutting area, and finally broken into small particles that can pass through the channel section;

[0020] The blades of the two groups of cutting knives are staggered, that is, the blade gap of the upstream knife is opposite to the blade solid area of the downstream knife, when the knives move reciprocally in opposite directions, the downward cutting of the upstream knife and the upward lifting of the downstream knife form a dynamic shearing grid, after the staggered arrangement, the effective cutting gap is reduced, compared with the parallel blade arrangement, the staggered design increases the cutting contact area, and the alternating movement of the blades forms a "dynamic gate" effect, which can intercept large-volume sundries and allow small particles after breaking to pass through the water flow, so that the drainage and dredging are simultaneously performed, and the channel water efficiency is greatly improved.

[0021] The two filter plates are arranged in a converging shape along the water flow direction, so that the water flow produces a centripetal convergence effect when passing through the filter plates, when the sundries approach the filter plates with the water flow, the converging structure guides the sundries to concentrate in the central area of the channel, and the action density of the cutting knives is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is the overall structure schematic diagram of the drainage channel in the present application;

[0024] Figure 2 is Figure 1 the structure schematic diagram in the drainage channel body in the present application;

[0025] Figure 3 is Figure 2 the structure schematic diagram below the top plate in the present application;

[0026] Figure 4 is Figure 3 the structure schematic diagram of the water wheel and the blade in the present application;

[0027] Figure 5 is Figure 4A schematic diagram of the structure of the middle protective shell.

[0028] Reference numerals: 1. Drainage channel body; 11. Top plate; 12. Side plate; 2. Blade; 3. Drive mechanism; 31. Rotating shaft; 32. Water wheel; 33. Eccentric block; 34. Fixed rod; 35. Elastic element; 4. Protective shell; 5. Filter plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail below.

[0030] This application discloses a high-standard drainage channel for farmland irrigation.

[0031] Reference Figure 1 and Figure 2 A high-standard farmland irrigation drainage channel includes a drainage channel body 1 and two sets of cutting blades installed in the drainage channel body 1. The cutting blades include multiple blades 2 spaced apart. The multiple blades 2 of the two cutting blades are staggered. The drainage channel body 1 is also equipped with two sets of drive mechanisms 3. The two drive mechanisms 3 are used to drive the corresponding cutting blades to make opposite reciprocating movements along the depth direction of the drainage channel body 1.

[0032] This solution involves installing two sets of cutting blades within the drainage channel body 1, with the blades 2 of the two sets interlaced. A drive mechanism 3 drives the blades to reciprocate in opposite directions along the channel depth. When water flows through carrying large debris such as branches and straw, the interlaced blades 2 exert a shearing force on the debris during their opposing movements. For example, when the upstream blade moves downward, the downstream blade moves upward simultaneously, resulting in continuous cutting action in the interlaced area of ​​the blades 2.

[0033] Because the blade moves perpendicular to the water flow, debris is repeatedly cut as it flows through the cutting zone, eventually breaking it into small particles that can pass through the channel cross-section. This design utilizes the reciprocating differential motion of the blade to enhance cutting efficiency. Compared to traditional fixed blades or unidirectional rotating blades, it increases the breaking rate of fibrous debris (such as straw) by more than 50%, and effectively prevents jamming caused by long debris entangled in the blade shaft, significantly reducing the risk of channel blockage.

[0034] Reference Figure 3 , Figure 4 and Figure 5The top plate 11 is provided with two side plates 12 fixedly installed on the side edges of the top plate 11 and abutting against the inner walls of the drainage channel body 1. The driving mechanism 3 comprises a rotating shaft 31, a water wheel 32, an eccentric block 33, a fixed rod 34 and an elastic element 35. The rotating shaft 31 is rotatably installed on the side plate 12. The water wheel 32 is coaxially fixed on the rotating shaft 31, and the wheel surface of the water wheel 32 is opposite to the flowing direction of the water flow in the drainage channel body 1. The eccentric block 33 is fixed on the end portion of the rotating shaft 31. The fixed rod 34 is movably installed on the top plate 11 and can move in a direction perpendicular to the top plate 11. One end of the fixed rod 34 is aligned with the side edge of the eccentric block 33, and the other end is fixedly connected with the cutting tool. The elastic element 35 is sleeved on the fixed rod 34 and can provide a moving force for the fixed rod 34 to move towards the eccentric block 33.

[0035] In the driving mechanism 3, the rotating shaft 31 captures the water flow energy through the water wheel 32. The water flow impacts the blades of the water wheel 32 to drive the rotating shaft 31 to rotate. The eccentric block 33 coaxially fixed with the rotating shaft 31 rotates accordingly. The rotating movement of the eccentric block 33 is converted into linear reciprocating movement through the fixed rod 34. When the long-axis end of the eccentric block 33 pushes the fixed rod 34, the fixed rod 34 compresses the elastic element 35 and moves away from the water wheel 32, driving the cutting tool to move towards the bottom of the channel. When the short-axis end of the eccentric block 33 is turned towards the fixed rod 34, the elastic element 35 releases potential energy and pushes the fixed rod 34 and the cutting tool to reset to the initial position.

[0036] For example, when the water flow speed is 0.5 m / s, the rotating speed of the water wheel 32 can reach 20 rpm, and the cutting tool is driven to reciprocate at a frequency of 10 times per minute. This design directly converts the water flow energy into cutting power without the need for external power, which is particularly suitable for remote farmland. The pre-tightening force of the elastic element 35 can be adjusted to adapt to different water flow conditions, ensuring the continuity of the movement of the cutting tool and avoiding movement instability caused by flow speed fluctuations.

[0037] Referring to Figure 3 and Figure 4 The multiple blades 2 of the two cutting tools are arranged in an interlaced manner. The blades 2 of the two groups of cutting tools are arranged in an interlaced manner, i.e., the gaps between the blades 2 of the upstream cutting tool are opposite to the solid areas of the blades 2 of the downstream cutting tool.

[0038] When the cutting tools reciprocate in opposite directions, the downward cutting of the upstream cutting tool and the upward lifting of the downstream cutting tool form a dynamic shearing grid. For example, the distance between the blades 2 is 50 mm, and the thickness is 10 mm. After interlaced arrangement, the effective cutting gap is reduced to 40 mm, which can intercept and crush debris with a diameter of > 30 mm.

[0039] Compared with the parallel blade 2 arrangement, the interlaced design increases the cutting contact area by 30%. Moreover, the alternating movement of the blades 2 forms a "dynamic gate" effect, which can intercept large-volume debris and allow small particles after crushing to pass through the water flow, realizing the synchronous performance of drainage and dredging, and improving the channel water efficiency by 25%.

[0040] Referring to Figure 4 and Figure 5 The protective shell 4 is fixed on the top plate 11, and the eccentric block 33, the elastic member 35 and part of the fixing rod 34 are covered in the protective shell 4. The upper part of the eccentric block 33, the elastic member 35 and the fixing rod 34 are covered in the protective shell 4, so that the mud and debris splashed in the channel cannot enter the inside of the driving mechanism 3.

[0041] For example, when the cutter cuts the straw, the splashed debris is blocked by the protective shell 4, avoiding invading the gap between the eccentric block 33 and the rotating shaft 31, and reducing the risk of wear. At the same time, the bottom of the protective shell 4 is provided with a drainage hole, allowing a small amount of infiltrated water to be discharged, avoiding internal water corrosion of the components. This design prolongs the service life of the driving mechanism 3 to more than 5 years, and the shell is connected by bolts, which is convenient for disassembly and maintenance, and reduces the operation and maintenance cost caused by component corrosion.

[0042] The two side plates 12 are provided with filter plates 5 near the water side of the water flow in the drainage channel body 1, and a plurality of filter holes are formed in the filter plates 5. The inclined filter plates 5 provided on the water side of the side plates 12 are provided with a plurality of filter holes (hole diameter 20-30mm), which preliminarily intercept oversized debris (such as stones and thick branches), so that they are retained on the front side of the filter plates 5, and only allow the debris that can pass through the cutting area to enter the cutter working area.

[0043] For example, the inclination angle of the filter plate 5 is 60°, and the debris slides along the plate surface to the edge of the channel under the action of gravity, which is convenient for concentrated fishing. The existence of the filter hole divides part of the water flow, reduces the flow pressure directly impacting the cutting knife, avoids the accumulation of unbroken debris upstream of the cutting knife, reduces the risk of overload of the cutting knife, and reduces the overall system load by 40%.

[0044] Both filter plates 5 are inclined, and both filter plates 5 are arranged in a converging manner along the water flow direction. Both filter plates 5 are arranged in a converging manner along the water flow direction (such as V-shaped layout, included angle 90°), so that the water flow produces a centripetal convergence effect when passing through the filter plate 5. When the debris approaches the filter plate 5 along the water flow, the converging structure guides the debris to concentrate in the central area of the channel, improving the action density of the cutting knife.

[0045] For example, the channel width is 1m, the filter plate 5 converges to the central area with a width of 0.6m, and the unit area debris treatment capacity increases by 50%. At the same time, the inclined design makes the debris accumulated in front of the filter plate 5 slide to the side wall of the channel under the action of gravity, avoiding complete blockage of the water passing section, and ensuring that the drainage capacity can still maintain more than 60% under extreme working conditions.

[0046] The implementation principle of the high-standard farmland irrigation drainage channel provided in the embodiments of the present application is as follows: two groups of cutting tools are arranged in the drainage channel body 1, and the blades 2 of the two groups of tools are staggered with each other. The driving mechanism 3 drives the tools to make opposite reciprocating movements along the depth direction of the channel. When the water flow carries large-volume sundries such as branches and straws, the staggered blades 2 form a shearing force on the sundries in the opposite movement. For example, when the upstream tool moves downward, the downstream tool moves upward synchronously, so that the staggered blades 2 in the staggered area continuously cut. Since the movement direction of the tool is perpendicular to the water flow direction, the sundries are repeatedly cut when flowing through the cutting area, and are finally broken into small particles that can pass through the channel section.

[0047] The above are optional embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high standard farmland irrigation drainage channel, characterized by: The utility model provides a drainage ditch body (1) and the two groups of cutting knives that are arranged in drainage ditch body (1), cutting knife includes a plurality of interval setting blade (2), a plurality of blades (2) of two cutting knives are staggered, two driving mechanisms (3) are installed on drainage ditch body (1) still, two driving mechanisms (3) are used to drive corresponding cutting knife along the depth of drainage ditch body (1) and make opposite reciprocating motion.

2. The high standard farmland irrigation drainage channel according to claim 1, characterized in that: Top plate (11) is installed on the top of drainage ditch body (1), two side plates (12) are fixedly installed on the side of top plate (11), two side plates (12) are arranged on the inner wall of drainage ditch body (1), and driving mechanism (3) includes pivot (31), water wheel (32), eccentric block (33), fixed rod (34) and elastic element (35). Pivot (31) is rotatably installed on side plate (12), water wheel (32) is coaxially fixed on pivot (31), the wheel surface of water wheel (32) is opposite the flow direction of water flow in drainage ditch body (1), eccentric block (33) is fixed on the end of pivot (31), fixed rod (34) is movably installed on top plate (11) and can move in the direction perpendicular to top plate (11), one end of fixed rod (34) is aligned with the side of eccentric block (33), the other end is fixedly connected with cutting knife, and elastic element (35) is sleeved on fixed rod (34) and can provide an action force for fixed rod (34) to move to eccentric block (33).

3. The high standard farmland irrigation drainage channel according to claim 1, characterized in that: A plurality of blades (2) of two cutting knives are staggered.

4. The high standard farmland irrigation drainage channel according to claim 2, characterized in that: Protection shell (4) is fixed on top plate (11), eccentric block (33), elastic element (35) and part of fixed rod (34) are covered in protection shell (4).

5. The high-standard farmland irrigation drainage channel according to claim 2, characterized in that: Two side plates (12) are close to the water side of water flow in drainage ditch body (1) and are provided with filter plate (5), a plurality of filter holes are formed in filter plate (5).

6. The high-standard farmland irrigation drainage channel according to claim 5, characterized in that: Two filter plates (5) are arranged in an inclined manner, and two filter plates (5) are arranged in a converging manner along the direction of water flow.

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