Farmland irrigation and drainage system

Abstract

The present invention provides a farmland irrigation and drainage system. The system comprises an inlet pool, located within the farmland and made of a water-filtering material; and an outlet pool, located within the farmland and spaced apart from the inlet pool. The outlet pool has a sidewall provided with a water hole, connecting the outlet pool to the farmland through the hole. The height of the hole can be controlled to maintain a predetermined water level in the farmland. The technical solution of the present invention solves the problem of existing farmland irrigation and drainage systems being unable to achieve automatic irrigation and drainage.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural irrigation and drainage, and in particular to a farmland irrigation and drainage system. Background Art

[0002] With the development of agricultural production activities, agricultural non-point source pollution has become a bottleneck restricting the development of the agricultural economy. In the existing technology, the farmland irrigation and drainage system is usually a concrete ditch, and the water inlet and outlet are manually controlled by channel grooving or setting gate valves. It is impossible to achieve automatic control of the farmland water level, and the farmland irrigation water directly enters the water system through the channel and has no pollution removal function. Summary of the Invention

[0003] The main purpose of the present invention is to provide a farmland irrigation and drainage system to solve the problem that the farmland irrigation and drainage system in the prior art cannot achieve automatic irrigation and drainage.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a farmland irrigation and drainage system is provided, comprising: an inlet pool, which is arranged in the farmland and is made of a water filtration material; an outlet pool, which is arranged in the farmland and is spaced apart from the inlet pool, and a water hole is provided on the side wall of the outlet pool, and the outlet pool is connected to the farmland through the water hole, so as to control the predetermined water level of the farmland by controlling the height of the water hole.

[0005] Furthermore, along the vertical direction, the farmland irrigation and drainage system includes multiple levels of farmland, and each level of farmland is equipped with an inlet pool and an outlet pool; the farmland irrigation and drainage system also includes an outlet pipeline, which connects the outlet pool of the upper farmland and the inlet pool of the lower farmland.

[0006] Furthermore, the farmland irrigation and drainage system also includes: a first water reservoir and a first circulation pipeline, the first water reservoir is arranged below the lowest-level farmland, and the first circulation pipeline connects the outlet tank and the first water reservoir located in the lowest-level farmland; a second water reservoir and a second circulation pipeline, the second water reservoir is arranged above the highest-level farmland, and the second circulation pipeline connects the inlet tank and the second water reservoir located in the highest-level farmland; a third circulation pipeline, the third circulation pipeline connects the first water reservoir and the second water reservoir; a water pump, the water pump is arranged on the third circulation pipeline.

[0007] Furthermore, the first water reservoir and / or the second water reservoir is a silica sand water reservoir, and the silica sand water reservoir is used to purify irrigation water.

[0008] Furthermore, the water outlet pipeline, the first circulation pipeline, the second circulation pipeline and the third circulation pipeline are made of UPVC material; and / or the outer surfaces of the water outlet pipeline, the first circulation pipeline, the second circulation pipeline and the third circulation pipeline are coated with anti-corrosion material.

[0009] Furthermore, the water inlet pool includes: bricks, each brick has a water storage cavity, and multiple bricks are laid vertically with cement mortar, and the bricks are made of silica sand material.

[0010] Furthermore, the water outlet pool includes: bricks, the bricks have a water storage cavity, and multiple bricks are laid in the vertical direction with cement mortar, and the bricks are made of silica sand material; a mortar layer, the mortar layer is coated on the outer surface of the multiple bricks, and the top of the mortar layer is flush with the bottom end of the water hole.

[0011] Furthermore, in the vertical direction, drainage holes are provided on the side walls of the outlet pool, which are spaced apart from the water holes, and the drainage holes are located below the water holes; the farmland irrigation and drainage system also includes: a drainage ditch, which is dug in the farmland and arranged between the water inlet pool and the water outlet pool; a drainage pipe, the first end of the drainage pipe is connected to the drainage hole, and the second end of the drainage pipe is connected to the drainage ditch; a sealing piece, which is detachably provided at the second end of the drainage pipe, so that the water in the farmland can enter the outlet pool through the drainage pipe by removing the sealing piece.

[0012] Furthermore, in the vertical direction, a water outlet hole is provided on the side wall of the water outlet pool, which is spaced apart from the water hole. The water outlet hole is used to discharge the water in the water outlet pool; in the vertical direction, the bottom end of the water outlet hole is lower than the bottom end of the drainage hole.

[0013] Furthermore, the water outlet pool includes: a plain concrete cushion layer, which is arranged in the farmland; bricks, which are made of silica sand material, and the outer peripheral walls of the bricks are arranged in a polygonal shape. The bricks have a water storage cavity and a plurality of accommodating cavities arranged at circumferential intervals around the water storage cavity; three bricks are laid on the plain concrete cushion layer through cement mortar in the vertical direction; a water hole is provided on the side wall of the brick located at the top, and a plurality of water holes are arranged at circumferential intervals around the brick located at the top; a drainage hole is provided on the side wall of the brick located in the middle; a semicircular hole is provided on the side wall of the brick located in the middle and the brick located at the bottom, and the two semicircular holes are connected to form a water outlet hole; stones, and a plurality of stones are filled in the accommodating cavity; a mortar layer, a mortar layer is coated on the outer peripheral surface of the three bricks, the top of the mortar layer is flush with the bottom end of the water hole, and the bottom end of the mortar layer extends to the plain concrete cushion layer.

[0014] By applying the technical solution of the present invention, the water inlet pool is made of a water filtering material. In this way, when irrigation water is introduced into the water inlet pool, the irrigation water is filtered by the water inlet pool and then irrigated into the farmland, so that the farmland irrigation and drainage system provided by the present application has a pollution removal function; in addition, the farmland irrigation and drainage system provided by the present application can realize automatic control of the farmland water level through the setting of the water outlet pool. When the water level in the farmland is higher than the water hole, the water in the farmland enters the water outlet pool through the water hole, so that the water level of the farmland is restored to the predetermined water level; according to the water level demand of the crops in the farmland, the predetermined water level of the farmland can be controlled by controlling the height of the water hole.

[0015] The farmland irrigation and drainage system provided in the present application can realize automatic irrigation and drainage, has the advantages of energy saving and environmental protection, does not require manual supervision, and can liberate the manpower of traditional manual supervision. In addition, the farmland irrigation and drainage system provided in the present application achieves the effect of energy saving and environmental protection through the setting of pipes, water reservoirs and water inlet pools with water permeability and water filtering functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A schematic structural diagram of a farmland irrigation and drainage system according to an optional embodiment of the present invention is shown;

[0018] Figure 2 Shown Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 Shown Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 4 Shown Figure 3 A schematic diagram of the overhead structure of the water inlet pool;

[0021] Figure 5 Shown Figure 2 Schematic diagram of the overhead structure of the outlet pool;

[0022] Figure 6 Shown Figure 2 A schematic diagram of the structure of the bricks located in the middle of the outlet pool;

[0023] Figure 7 Shown Figure 2 A schematic diagram of the structure of the bricks at the bottom of the outlet pool;

[0024] Figure 8 Shown Figure 1 The structural diagram of the farmland irrigation and drainage system in the same level of farmland;

[0025] Figure 9 Shown Figure 1 Schematic diagram of the structure of part of the farmland irrigation and drainage system in multi-level farmland.

[0026] The above drawings include the following reference numerals:

[0027] 10. Water inlet pool; 20. Water outlet pool; 100. Plain concrete cushion layer; 200. Bricks; 201. Water storage chamber; 202. Accommodation chamber; 203. Semicircular hole; 300. Stone; 400. Mortar layer; 221. Water hole; 222. Water outlet hole; 223. Drain hole; 30. Water outlet pipe; 40. First water reservoir; 50. First circulation pipe; 60. Second water reservoir; 80. Second circulation pipe; 70. Third circulation pipe; 90. Water pump; 91. Drainage ditch; 92. Drainage pipe; 110. Block stone retaining wall; 120. Box-type ecological retaining wall; 130. Slag cushion layer; 140. Filter bag; 150. Drain pipe; 1. Farmland. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to solve the problem that the farmland irrigation and drainage system in the prior art has no pollution removal function, the present invention provides a farmland irrigation and drainage system.

[0030] like Figures 1 to 9 As shown, the farmland irrigation and drainage system includes an inlet pool 10 and an outlet pool 20. The inlet pool 10 is set in the farmland 1 and is made of water filtering material. The outlet pool 20 is set in the farmland 1 and is spaced apart from the inlet pool 10. A water hole 221 is provided on the side wall of the outlet pool 20. The outlet pool 20 is connected to the farmland 1 through the water hole 221 to control the predetermined water level of the farmland 1 by controlling the height of the water hole 221.

[0031] In this embodiment, the water inlet pool 10 is made of a water filtering material. In this way, when irrigation water is introduced into the water inlet pool 10, the irrigation water is filtered by the water inlet pool 10 and then irrigated into the farmland 1, so that the farmland irrigation and drainage system provided by this application has a pollution removal function; in addition, the farmland irrigation and drainage system provided by this application can realize automatic control of the farmland water level through the setting of the water outlet pool 20. When the water level in the farmland 1 is higher than the water hole 221, the water in the farmland 1 enters the water outlet pool 20 through the water hole 221, so that the water level of the farmland 1 is restored to the predetermined water level; according to the water level requirements of the crops in the farmland, the predetermined water level of the farmland 1 can be controlled by controlling the height of the water hole 221.

[0032] like Figure 1 and Figure 9As shown, in the vertical direction, the farmland irrigation and drainage system includes multiple levels of farmland 1, and each level of farmland 1 is provided with an inlet pool 10 and an outlet pool 20; the farmland irrigation and drainage system also includes an outlet pipe 30, which connects the outlet pool 20 of the upper-level farmland 1 and the inlet pool 10 of the lower-level farmland 1. In this way, through the cooperation of the water holes 221 of the outlet pool 20 and the outlet pipe 30, step-by-step irrigation of multiple levels of farmland can be achieved. Specifically, irrigation water is passed through the inlet pool 10 located in the uppermost farmland into the uppermost farmland 1. When the water level exceeds the predetermined water level, the irrigation water enters the outlet pool 20 through the water hole 221, and then passes through the outlet pipe 30 into the inlet pool 10 of the farmland 1 of the next level. The above process is repeated, and automatic irrigation of multiple levels of farmland can be achieved, and the predetermined water level in the multiple levels of farmland can be automatically controlled.

[0033] Optionally, the farmland irrigation and drainage system further includes a water reservoir. The lowest outlet pool 20 is connected to the water reservoir via an outlet pipe 30, and the highest inlet pool 10 is connected to the water reservoir via an inlet pipe. When there is too much irrigation water in the farmland, it can be discharged into the water reservoir through the outlet pipe 30. When there is insufficient irrigation water in the farmland, the water in the water reservoir can be discharged into the highest inlet pool via the inlet pipe, and then filtered through the inlet pool 10 to irrigate the farmland. In this way, zero discharge of irrigation water can be achieved, which is conducive to the recycling of irrigation water and energy conservation.

[0034] Optionally, the water reservoir has a purification function, which can further enhance the decontamination effect of the farmland irrigation and drainage system.

[0035] like Figure 9 As shown, the farmland irrigation and drainage system further includes a first water reservoir 40, a first circulation pipeline 50, a second water reservoir 60, a second circulation pipeline 80, a third circulation pipeline 70, and a water pump 90. The first water reservoir 40 is located below the lowest farmland 1. The first circulation pipeline 50 connects the outlet pool 20 located in the lowest farmland 1 and the first water reservoir 40. The second water reservoir 60 is located above the highest farmland 1. The second circulation pipeline 80 connects the inlet pool 10 located in the highest farmland 1 and the second water reservoir 60. The third circulation pipeline 70 connects the first water reservoir 40 and the second water reservoir 60. The water pump 90 is located on the third circulation pipeline 70. In this way, by providing two levels of water reservoirs, it is beneficial to control the amount of irrigation water discharged into the inlet pool 10 in the highest farmland 1.

[0036] In a specific embodiment, when the farmland irrigation and drainage system provided by the present application is in use, the collected rainwater or irrigation and drainage is pumped through the lowest first water reservoir 40 to the second water reservoir 60 for transfer to the uppermost paddy field, and then begins to be irrigated step by step to each level of the paddy field. The water first penetrates into the farmland 1 through the water inlet pool 10 made of silica sand integrated well bricks (without mortar). The bricks 200 have water permeability and water filtering functions, and can purify rainwater and farmland irrigation water with non-point source pollution. After entering the farmland 1, when the water level exceeds the normal water level of rice by 5 cm, it enters the outlet pool 20 through the water hole 221 of the outlet pool 20 and flows into the next level farmland 1 through the pipeline. The pipeline is made of UPVC material. To ensure the service life, the outside is coated with preservatives. Each level of farmland 1 is irrigated through the inlet pool 10 and the outlet pool 20. The water of the lowest level farmland 1 is collected into the first water reservoir 40 at the terminal through the pipeline, which can achieve zero discharge of irrigation water. The collected water is then purified in the first water reservoir 40 and then lifted to the second water reservoir 60 at the top of the paddy field for transfer, thereby realizing the comprehensive recycling of irrigation rainwater and achieving the purpose of water saving and water purification.

[0037] Optionally, the first water reservoir 40 and / or the second water reservoir 60 is a silica sand water reservoir, which can purify irrigation water, thereby further improving the decontamination effect of the farmland irrigation and drainage system.

[0038] Optionally, the outlet pipe 30, the first circulation pipe 50, the second circulation pipe 80 and the third circulation pipe 70 are made of UPVC material. UPVC material is not easy to rust and meets environmental protection requirements. It can be used in farmland to avoid contamination of irrigation water.

[0039] Optionally, the outer surfaces of the outlet pipe 30, the first circulation pipe 50, the second circulation pipe 80, and the third circulation pipe 70 are coated with an anti-corrosion material. This can increase the service life of the pipes, ensure the service life of the farmland irrigation and drainage system, and extend the maintenance interval.

[0040] Optionally, the anti-corrosion material is chlorinated rubber topcoat. Chlorinated rubber topcoat is an anti-corrosion paint with chlorinated rubber resin as the main film-forming material. Chlorinated rubber topcoat has good corrosion resistance, fast drying, simple construction, good water resistance, and can provide good protection for pipelines, thereby increasing the service life of pipelines.

[0041] like Figure 3 and Figure 4As shown, the water inlet pool 10 comprises bricks 200, each of which has a water storage cavity 201. Multiple bricks 200 are vertically laid with cement mortar, and the bricks 200 are made of silica sand. Thus, the water inlet pool 10 is constructed using a splicing and stacking process, requiring only a small amount of cement mortar. Compared to conventional concrete-cast ditches, the construction period is less susceptible to weather conditions, resulting in a shorter construction period, lower costs, easier construction, lower operational complexity, and less susceptible to external conditions such as road conditions. Because the bricks 200 are permeable and filtration-capable, irrigation water is passed into the water storage cavity 201, filtered through the walls of the bricks 200, and then enters the farmland 1.

[0042] like Figure 2 、 Figures 5 to 7 As shown, the water outlet pool 20 comprises bricks 200 and a mortar layer 400. The bricks 200 have water storage cavities 201. Multiple bricks 200 are vertically laid with cement mortar. The bricks 200 are made of silica sand. The mortar layer 400 is applied to the outer circumference of the bricks 200, with the top of the mortar layer 400 flush with the bottom of the water holes 221. Thus, the mortar layer 400 prevents water in the water storage cavity 201 from seeping through the bricks 200 into the farmland 1. When the water level in the farmland 1 is higher than the mortar layer 400, the water in the farmland 1 enters the water outlet pool 20 through the water holes 221, thereby controlling the water level in the farmland 1.

[0043] like Figure 2 As shown, along the vertical direction, the side wall of the water outlet pool 20 is provided with a drainage hole 223 spaced apart from the water hole 221, and the drainage hole 223 is located below the water hole 221; Figure 8 As shown, the farmland irrigation and drainage system further includes a drainage ditch 91 and a drainage pipe 92. The drainage ditch 91 is dug in the farmland 1 and is arranged between the water inlet pool 10 and the water outlet pool 20. The first end of the drainage pipe 92 is connected to the drainage hole 223, and the second end of the drainage pipe 92 is connected to the drainage ditch 91. A plugging member is detachably arranged at the second end of the drainage pipe 92, so that by removing the plugging member, the water in the farmland 1 can enter the water outlet pool 20 through the drainage pipe 92. In this way, in the rainy season or when the water in the farmland 1 needs to be drained, the plugging member is removed, and the water in the farmland 1 flows into the water outlet pool 20 through the drainage ditch 91 and the drainage pipe 92, and then enters the next level of farmland through the water outlet pipe 30 or enters the first water storage tank 40 through the first circulation pipe 50.

[0044] Optionally, the drainage ditch 91 is an earth ditch.

[0045] like Figure 2As shown, a water outlet hole 222 is provided on the side wall of the outlet pool 20, spaced apart from the water outlet hole 221. The water outlet hole 222 is used to drain the water in the outlet pool 20. In the vertical direction, the bottom of the water outlet hole 222 is lower than the bottom of the drainage hole 223. In this way, water that enters the outlet pool 20 through the water outlet hole 221 and the drainage hole 223 can be discharged from the outlet pool 20 through the water outlet hole 222.

[0046] Optionally, the diameters of the water hole 221 , the drainage hole 223 and the water outlet hole 222 gradually increase.

[0047] Optionally, the diameter of the water hole 221 is 50 mm; no water hole 221 is provided on the side close to the ridge; optionally, one or two water holes 221 are provided on one side.

[0048] Optionally, the outer periphery of the water outlet pool 20 is entirely plastered with 1:2 mortar from the top brick layer 200 to the bottom, and the specific amount can be adjusted according to the site conditions.

[0049] Optionally, the diameter of the drainage hole 223 is 100 mm.

[0050] Optionally, the diameter of the water outlet hole 222 is 200 mm.

[0051] Optionally, the outer peripheral wall of the brick 200 is set in a polygonal shape to facilitate the masonry with the block stone retaining wall 110.

[0052] Optionally, the water outlet pipe 30 includes a straight pipe and an elbow.

[0053] Optionally, the pipe joint between the drainage pipe 92 and the water outlet pool 20 is filled with mortar. The pipe joint between the drainage pipe 92 and the water outlet pool 20 is filled with mortar.

[0054] exist Figure 2 In the specific embodiment shown, the water outlet pool 20 includes a plain concrete cushion layer 100, bricks 200, stones 300 and a mortar layer 400. The plain concrete cushion layer 100 is set in the farmland 1. The bricks 200 are made of silica sand material. The outer peripheral wall of the bricks 200 is set in a polygonal shape. The bricks 200 have a water storage cavity 201 and a plurality of accommodating cavities 202 arranged at intervals around the water storage cavity 201. Three bricks 200 are laid on the plain concrete cushion layer 100 in the vertical direction by cement mortar; Figure 2 and Figure 5 As shown, a water hole 221 is opened on the side wall of the top brick 200, and multiple water holes 221 are arranged at intervals around the circumference of the top brick 200; a drainage hole 223 is opened on the side wall of the middle brick 200; Figure 6 and Figure 7As shown, a semicircular hole 203 is provided on the sidewall of each of the middle and bottom bricks 200. The two semicircular holes 203 are joined to form a water outlet 222. Multiple stones 300 are filled in the accommodating cavity 202. A mortar layer 400 is applied to the outer circumference of the three bricks 200. The top of the mortar layer 400 is flush with the bottom of the water outlet 221, and the bottom of the mortar layer 400 extends to the plain concrete cushion layer 100. The plain concrete cushion layer 100 has a leveling function, facilitating the subsequent laying of the bricks 200. The stones 300 have a filtering function, allowing water to pass only through the gaps between the multiple stones 300, thereby preventing the passage of larger debris.

[0055] Optionally, the brick 200 involved in the present application is a silica sand integrated well brick.

[0056] Optionally, the water inlet pool 10 and the water outlet pool 20 are both formed by three silica sand integrated well bricks laid tightly against the block stone retaining wall 110 using M7.5 mortar.

[0057] Optionally, the stones 300 are gravel.

[0058] Optionally, farmland 1 is a paddy field, and the predetermined water level is 5 cm above the paddy field surface. This ensures that the effective depth of the paddy field is optimal for rice growth, which is beneficial for rice growth. Specifically, when the water surface exceeds 5 cm, it automatically enters the outlet tank 20 and then flows through the outlet pipe 30 to the next paddy field. The outlet tank 20 automatically controls the predetermined water level in the paddy field, eliminating the need for additional equipment or manual management.

[0059] like Figure 1 As shown, the farmland irrigation and drainage system also includes a block stone retaining wall 110 and a box-type ecological retaining wall 120. The block stone retaining wall 110 is arranged on the outer peripheral side of the same level of farmland. The water inlet pool 10 and the water outlet pool 20 are arranged relative to each other and are both in contact with the block stone retaining wall 110. The water outlet pool 20 is arranged close to the next level of farmland, and the box-type ecological retaining wall 120 is arranged on the transition surface between the two levels of farmland. The block stone retaining wall 110 can accommodate irrigation water and prevent it from flowing out, so that the predetermined water level of the irrigation water can be controlled; the box-type ecological retaining wall 120 is convenient for installation, which can reduce the construction period and reduce the difficulty of construction. The farmland irrigation and drainage system provided in this application is suitable for use in reclaiming and constructing farmland on steep slopes and hilly plots in mountains.

[0060] like Figure 1 As shown, the farmland irrigation and drainage system also includes a filter bag 140 and a drainage pipe 150. The drainage pipe 150 is arranged in the block stone retaining wall 110. The filter bag 140 is arranged at one end of the drainage pipe 150 away from the water inlet pool 10. The filter bag 140 is used to prevent the drainage pipe 150 from being blocked.

[0061] like Figure 1As shown, the farmland irrigation and drainage system further includes a slag cushion layer 130 , on which the block stone retaining wall 110 and the plain concrete cushion layer 100 are arranged. The slag cushion layer 130 has a leveling function.

[0062] Existing farmland irrigation and drainage systems primarily rely on open channels constructed with concrete. These channels require mold making, on-site pouring, and maintenance, placing high demands on weather (climate, season), site conditions, and road conditions, limiting the construction process. Furthermore, concrete construction is costly, making paddy field reclamation projects on steep mountain slopes and hilly terrain more challenging and requiring a relatively long construction period. The farmland irrigation and drainage system provided by this application, however, utilizes an inlet pool 10 and an outlet pool 20 constructed of integrated well bricks, providing permeability and water filtration. These systems eliminate the need for concrete casting and maintenance, and instead connect the upper and lower fields via UPVC pipes. The inlet pool 10 purifies irrigation water, while openings at the top of the outlet pool 20 automatically control the field water level. Field drainage ditches 91 increase drainage during heavy rain and during harvest time, thereby automatically controlling the irrigation and drainage of sponge-type paddy fields. By diverting water across the fields, the farmland irrigation and drainage system provided by this application can achieve nearly 100% irrigation water utilization, resulting in highly efficient water conservation. Among them, one-piece well bricks are not easily affected by climate, site, roads, etc., and one-piece well bricks are formed materials, with fast construction, low cost, and effective quality control, which can shorten the construction period and advance the progress of the project.

[0063] The farmland irrigation and drainage system provided in this application integrates field drainage, pipeline drainage, and irrigation water purification. The farmland irrigation and drainage system provided in this application is applicable to various regions, addressing irrigation issues during the dry season and drainage issues during the rainy season. It also provides ecological interception and pollution removal functions. The water inlet pool 10 in this application is constructed using integrated well bricks that provide both permeability and filtration, achieving pollution interception and impurity removal for irrigation water. It utilizes minimal cement, has a simple process, is low cost, is easily marketable, and exhibits minimal external impact.

[0064] The water inlet pool 10 and the water outlet pool 20 in this application are built with integrated well bricks with water permeability and filtration functions, which can effectively intercept pollutants in rainwater for farmland irrigation and reduce agricultural non-point source pollution. The construction process is splicing and stacking, which is simple and uses a small amount of auxiliary materials. On the whole, the construction difficulty is small, the cost is low, the construction is convenient, the construction period is short, and it is not easily affected by external conditions such as climate and roads. The top bricks 200 of the water outlet pool 20 are opened at a height of 5 cm from the field surface to ensure that the effective depth of the paddy field is about 5 cm, the most suitable depth for rice growth. When the water surface height exceeds 5 cm, it will automatically enter the water outlet pool and enter the next level of paddy field through the outlet pipe 30. At the same time, a drainage ditch 91 is opened between the water inlet pool 10 and the water outlet pool 20, and the bottom of the ditch side of the water outlet pool 20 is connected to the drainage ditch 91 through a plugging member. The drainage pipe 92 is connected, which is convenient for accelerating drainage during heavy rain and rainstorms, and for draining the water from the rice fields during the harvest period. It can realize automatic control of the water level in the rice fields without the need for other equipment and manual management. The farmland irrigation and drainage system provided by this application realizes the comprehensive recycling of water bodies. The collected irrigation water and rainwater enter the water reservoir at the downstream, and after purification in the water reservoir, it is lifted to the top paddy field and then irrigated step by step. Finally, it is collected from the bottom paddy field and enters the water reservoir, thereby realizing the recycling of water bodies and achieving water-saving functions.

[0065] Alternatively, in the same level of farmland, only the inlet pool 10 or the outlet pool 20 may be included. The inlet pool 10 has water filtering and water permeability functions, which can remove pollutants from irrigation water and avoid non-point source pollution. The outlet pool 20 has a water level control function. When the water exceeds the predetermined level, the water automatically enters the next level, realizing automatic irrigation and drainage.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0068] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0069] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "upper" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both the "above" and "below" orientations. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0070] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0071] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A farmland irrigation and drainage system, characterized in that: include: A water inlet pool (10), the water inlet pool (10) being arranged in the farmland (1), and the water inlet pool (10) being made of a water filtering material; A water outlet pool (20), the water outlet pool (20) is arranged in the farmland (1) and is spaced apart from the water inlet pool (10), a water hole (221) is provided on a side wall of the water outlet pool (20), the water outlet pool (20) is connected to the farmland (1) through the water hole (221), and a predetermined water level of the farmland (1) is controlled by controlling the height of the water hole (221); In the vertical direction, the farmland irrigation and drainage system comprises multiple levels of farmland (1), and each level of the farmland (1) is provided with the water inlet pool (10) and the water outlet pool (20); The farmland irrigation and drainage system further comprises an outlet pipe (30), wherein the outlet pipe (30) is connected to the outlet pool (20) of the upper farmland (1) and the inlet pool (10) of the lower farmland (1); The water inlet pool (10) includes bricks (200), each of which has a water storage cavity (201). A plurality of the bricks (200) are laid vertically with cement mortar. The bricks (200) are made of silica sand, so that when irrigation water enters the water storage cavity (201), it is filtered through the brick walls of the bricks (200) and then enters the farmland (1). The water outlet pool (20) comprises: Bricks (200), each having a water storage cavity (201), a plurality of bricks (200) being laid vertically with cement mortar, and each brick (200) being made of silica sand; a mortar layer (400), the mortar layer (400) being coated on the outer peripheral surfaces of the plurality of bricks (200), the top of the mortar layer (400) being flush with the bottom of the water hole (221), so as to prevent water in the water storage cavity (201) from penetrating into the farmland (1) through the bricks (200); In the vertical direction, a drainage hole (223) is provided on the side wall of the water outlet pool (20) and is spaced apart from the water passage hole (221). The drainage hole (223) is located below the water passage hole (221). In the vertical direction, a water outlet hole (222) is provided on the side wall of the water outlet pool (20) and is spaced apart from the water through hole (221). The water outlet hole (222) is used to discharge water in the water outlet pool (20); in the vertical direction, the bottom end of the water outlet hole (222) is lower than the bottom end of the drainage hole (223), and the diameters of the water through hole (221), the drainage hole (223) and the water outlet hole (222) gradually increase; The farmland irrigation and drainage system further comprises a block stone retaining wall (110) and a box-type ecological retaining wall (120), wherein the block stone retaining wall (110) is arranged on the outer periphery of the same level of farmland, the water inlet pool (10) and the water outlet pool (20) are arranged opposite to each other and both fit the block stone retaining wall (110), the water outlet pool (20) is arranged close to the next level of farmland, and the box-type ecological retaining wall (120) is arranged on the transition surface between the two levels of farmland.

2. The farmland irrigation and drainage system according to claim 1, characterized in that: The farmland irrigation and drainage system also includes: a first water reservoir (40) and a first circulation pipeline (50), wherein the first water reservoir (40) is arranged below the lowest farmland (1), and the first circulation pipeline (50) is connected to the water outlet pool (20) located in the lowest farmland (1) and the first water reservoir (40); a second water reservoir (60) and a second circulation pipeline (80), wherein the second water reservoir (60) is arranged above the uppermost farmland (1), and the second circulation pipeline (80) is connected to the water outlet pool (20) located in the uppermost farmland (1) and the second water reservoir (60); a third circulation pipeline (70), the third circulation pipeline (70) being in communication with the first water reservoir (40) and the second water reservoir (60); A water pump (90), wherein the water pump (90) is arranged on the third circulation pipeline (70).

3. The farmland irrigation and drainage system according to claim 2, characterized in that: The first water reservoir (40) and / or the second water reservoir (60) is a silica sand water reservoir.

4. The farmland irrigation and drainage system according to claim 2, characterized in that: The water outlet pipeline (30), the first circulation pipeline (50), the second circulation pipeline (80), and the third circulation pipeline (70) are made of UPVC material; and / or The outer surfaces of the water outlet pipeline (30), the first circulation pipeline (50), the second circulation pipeline (80), and the third circulation pipeline (70) are coated with an anti-corrosion material.

5. The farmland irrigation and drainage system according to any one of claims 1 to 4, characterized in that: The farmland irrigation and drainage system also includes: A drainage ditch (91), the drainage ditch (91) is dug in the farmland (1), and the drainage ditch (91) is arranged between the water inlet pool (10) and the water outlet pool (20); a drainage pipe (92), wherein a first end of the drainage pipe (92) is in communication with the drainage hole (223), and a second end of the drainage pipe (92) is in communication with the drainage ditch (91); A blocking piece is detachably arranged at the second end of the drainage pipe (92), so that water in the farmland (1) can enter the water outlet pool (20) through the drainage pipe (92) by removing the blocking piece.

6. The farmland irrigation and drainage system according to claim 1, characterized in that: The water outlet pool (20) comprises: A plain concrete cushion layer (100), the plain concrete cushion layer (100) being arranged in the farmland (1); Bricks (200), wherein the outer peripheral wall of the brick (200) is arranged in a polygonal shape, and the brick (200) has a plurality of accommodating cavities (202) arranged at intervals around the circumference of the water storage cavity (201); three bricks (200) are laid on the plain concrete cushion layer (100) in a vertical direction by cement mortar; the side wall of the brick (200) located at the top is provided with the water hole (221), and the plurality of water holes (221) are arranged at intervals around the circumference of the brick (200) located at the top; the side wall of the brick (200) located in the middle is provided with the drainage hole (223); the side walls of the brick (200) located in the middle and the brick (200) located at the bottom are respectively provided with a semicircular hole (203), and the two semicircular holes (203) are connected to form the water outlet hole (222); Stones (300), a plurality of the stones (300) are filled in the accommodating cavity (202); A mortar layer (400) is coated on the outer peripheral surfaces of the three bricks (200), and the bottom end of the mortar layer (400) extends to the plain concrete cushion layer (100).

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