Irrigation system and irrigation method for vegetable planting

Abstract

The invention provides an irrigation system and method for vegetable planting. The irrigation system comprises an irrigation pool and a water level raising mechanism, a partition plate is placed in the middle of the irrigation pool, water seepage holes are formed in the partition plate, irrigation water is contained in a lower pool body, and a water inlet pipe is installed on the upper portion of the side wall of the lower pool body; the water level raising mechanism comprises an air bag, a limiting rod, an air inlet pump, an exhaust pump, an air inlet pipe and an exhaust pipe. The airbag is arranged at the bottom of the lower pool body; the limiting rod is fixed in the lower pool body above the air bag; one end of the air inlet pipe extends into the lower pool body to be communicated with the air bag, and the other end of the air inlet pipe extends out of the lower pool body to be communicated with an air outlet of the air inlet pump; one end of the exhaust pipe extends into the lower pool body to be communicated with the air bag, and the other end of the exhaust pipe extends out of the lower pool body to be communicated with an air inlet of an exhaust pump; the irrigation method comprises the steps of supplementing irrigation water, irrigating vegetables and stopping irrigation. Water resources are saved, the irrigation effect is good, and underground water cannot be polluted.

Description

Technical Field

[0001] The invention belongs to the technical field of vegetable planting, and in particular relates to an irrigation system and an irrigation method for vegetable planting. Background Art

[0002] After vegetable planting, it is necessary to irrigate according to the type of vegetable, soil conditions, growth and development period, etc. At present, the irrigation system mainly includes above-ground irrigation system and underground irrigation system, and both methods have certain shortcomings: As far as ground irrigation is concerned, the commonly used means of ground irrigation are flood irrigation and sprinkler irrigation. Flood irrigation wastes water resources and is likely to cause the phenomenon of more water in some places and less water in others. Flood irrigation wastes water resources, requires more labor, and is likely to cause the groundwater level to rise, thus causing soil salinization. The disadvantage of sprinkler irrigation is that a lot of water will be lost due to evaporation, especially in windy weather, and it is not easy to irrigate the entire irrigation area evenly. Water retained on the leaves can easily cause the growth of mold. If there is fertilizer in the irrigation water, it will cause leaf burns in hot and sunny weather.

[0003] As for underground irrigation, it mainly includes drip irrigation and infiltration irrigation. Although drip irrigation and infiltration irrigation are relatively ideal irrigation methods, they use a large number of pipes, and the water outlets of the pipes are easily blocked, affecting the irrigation effect. At the same time, when over-irrigation occurs, the irrigation water carries fertilizers or pesticides in the soil and infiltrates, which can easily pollute the groundwater. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide an irrigation system and an irrigation method for vegetable planting which save water resources, have good irrigation effects, and will not pollute groundwater.

[0005] The purpose of the present invention is achieved through the following technical solutions: A vegetable planting irrigation system comprises an irrigation pool and a water level raising mechanism, wherein the irrigation pool is an anti-seepage hardened pool, a partition is placed in the middle of the irrigation pool to divide the irrigation pool into an upper pool body and a lower pool body, a plurality of water seepage holes are arranged on the partition, a water seepage layer, a filter layer and a soil layer are laid in sequence from bottom to top in the upper pool body above the partition, irrigation water is filled in the lower pool body below the partition, and an inlet pipe with a water inlet valve is installed on the upper part of the side wall of the lower pool body; the water level raising mechanism comprises an air bag, a limit rod, an air intake pump, an exhaust pump, an air intake pipe and an exhaust pipe; the air bag is arranged at the bottom of the lower pool body; the limit rod is a plurality of transversely fixed rods above the air bag. A rod body is inside the lower pool body and is used to limit the upward movement of the airbag, and the limit rod is always located below the irrigation water level; the air intake pump and the exhaust pump are both located outside the irrigation pool; one end of the air intake pipe extends into the lower pool body and is connected to the airbag, and the other end extends out of the lower pool body and is connected to the air outlet of the air intake pump, and a one-way air intake valve is provided on the air intake pipe; one end of the exhaust pipe extends into the lower pool body and is connected to the airbag, and the other end extends out of the lower pool body and is connected to the air intake of the exhaust pump, and an exhaust valve is provided on the exhaust pipe; after the airbag is inflated, the irrigation water level moves up and exceeds the filter layer and enters the soil layer, and after the airbag is deflated and contracted, the irrigation water level moves down and returns to the lower pool body.

[0006] Furthermore, the water seepage layer is composed of stones or pebbles with a particle size of 15-35 mm; and the filter layer is composed of stones or pebbles with a particle size of 2-7 mm.

[0007] Furthermore, the partition is a plurality of plates placed transversely on a preset step in the middle of the irrigation pool.

[0008] Furthermore, a drain pipe with a built-in water outlet valve is installed at the lower part of the side wall of the lower pool body.

[0009] Furthermore, the vegetable planting irrigation system also includes a water level monitoring tube, which is a transparent tube fixed on the outer wall of the irrigation pool, and its lower end is connected to the lower pool body, and scale lines are provided on the water level monitoring tube; a first position monitoring point, a second position monitoring point, and a third position monitoring point are set on the water level monitoring tube, wherein the first position monitoring point is flush with the middle and lower part of the soil layer, the second position monitoring point is flush with the upper surface of the partition, and the third position monitoring point is located between the lower surface of the partition and the limit rod.

[0010] Furthermore, a water inlet pump is connected to the outside of the water inlet pipe.

[0011] Furthermore, a controller is provided outside the irrigation pool, and the water inlet pump, air inlet pump, and exhaust pump are electrically connected to the controller respectively, and can be started and stopped under the control of the controller; at the same time, a water level sensor electrically connected to the controller is installed in the water level monitoring pipe, and the water level sensor is used to monitor the positions of the first position monitoring point, the second position monitoring point, and the third position monitoring point, and transmit the monitored position signal to the controller; When the air intake pump is started, the air bag expands, and the irrigation water level rises until the height exceeds the filter layer and reaches the first position monitoring point. The water level sensor transmits the position signal to the controller, and the controller controls the air intake pump to stop; When the irrigation water soaks in the soil layer for a set time, the controller starts the exhaust pump to extract the gas in the airbag, and the irrigation water level drops. When the irrigation water level drops to the second monitoring point, the water level sensor transmits the position signal to the controller, and the controller stops the exhaust pump. When both the exhaust pump and the intake pump are not working, when the water level sensor detects that the water level in the lower pool reaches the third position monitoring point, the controller controls the water inlet pump to start and replenish water into the lower pool through the water inlet pipe until the irrigation water level reaches the second position monitoring point, and then the controller controls the water inlet pump to stop.

[0012] An irrigation method using the above-mentioned vegetable planting irrigation system comprises the following steps: S1. Replenish irrigation water: open the exhaust valve, start the water inlet pump to send irrigation water into the lower pool through the water inlet pipe. After the irrigation water level reaches the second position monitoring point, the water inlet pump stops and the exhaust valve is closed at the same time.

[0013] S2. Vegetable irrigation: After the vegetables are planted on the soil layer, when irrigation is needed, the air pump is started, the air bag expands, squeezing the irrigation water in the lower pool body, the irrigation water level rises and gradually covers the partition, the seepage layer, the filter layer, and enters the soil layer. When the irrigation water level reaches the first position monitoring point, the air pump stops.

[0014] S3. Stop irrigation: After the irrigation water has been soaking in the soil layer for a set time, open the exhaust valve, start the exhaust pump, extract the gas in the air bag, and the irrigation water level drops. When the irrigation water level drops to the second monitoring point, the exhaust pump stops and the irrigation is completed.

[0015] The present invention uses an irrigation system to irrigate the vegetables planted thereon efficiently and quickly, which not only saves water resources and has a good irrigation effect, but also does not pollute groundwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the irrigation system for vegetable planting according to the present invention; Figure 2 for Figure 1 The cross-sectional view along the AA direction; Figure 3 is a schematic structural diagram of the partition; As shown in the figure: 1-irrigation pool, 2-partition, 3-seepage hole, 4-upper pool body, 5-lower pool body, 6-seepage layer, 7-filtration layer, 8-soil layer, 9-water inlet pipe, 10-water inlet valve, 11-water inlet pump, 12-drain pipe, 13-outlet valve, 14-air bag, 15-limit rod, 16-inlet pump, 17-inlet pipe, 18-one-way inlet valve, 19-exhaust pump, 20-exhaust pipe, 21-exhaust valve, 22-water level monitoring pipe. DETAILED DESCRIPTION

[0018] The following is an explanation of the implementation of the present invention by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0021] like Figure 1-3 The present embodiment provides a method for irrigating vegetables, which comprises the following steps: (1) Construction of irrigation system: Figure 1-3 The irrigation system shown includes an irrigation pool 1 , a water level raising mechanism, and a water level monitoring pipe 22 .

[0022] like Figure 1 and Figure 2 As shown, the irrigation pool 1 is an impermeable hardened pool (a rectangular cement hardened pool), and a partition 2 is placed in the middle of the irrigation pool 1 to divide the irrigation pool 1 into an upper pool body 4 and a lower pool body 5. The partition 2 is a plurality of plates placed horizontally on a preset step in the middle of the irrigation pool 1, and a plurality of seepage holes 3 (such as Figure 3 As shown). In the upper pool body 4 above the partition 2, a water seepage layer 6, a filter layer 7, and a soil layer 8 are laid in sequence from bottom to top. The water seepage layer 6 is composed of stones or pebbles with a particle size of 15-35 mm (laid), and the thickness is about 10 cm; the filter layer 7 is composed of stones or pebbles with a particle size of 2-7 mm (if the cost allows, a layer of crushed charcoal can also be laid on the stones), and the thickness is about 6 cm; the soil layer 8 uses conventional garden soil. The lower pool body 5 below the partition 2 is filled with irrigation water, which can be pure water or mixed water mixed with fertilizer. A water inlet pipe 9 with a water inlet valve 10 (the water inlet valve 10 is an electric gate valve or a manual gate valve) is installed on the upper part of the side wall of the lower pool body 5, and an inlet pump 11 is connected to the outside of the water inlet pipe 9. At the same time, a drain pipe 12 with a water outlet valve 13 is installed on the lower part of the side wall of the lower pool body 5 (used to replace irrigation water, such as mixed water with pure water). The irrigation water discharged from the drain pipe 12 is discharged into the external water storage outlet to be reused next time.

[0023] The water level raising mechanism comprises an air bag 14, a limiting rod 15, an air intake pump 16, an exhaust pump 19, an air intake pipe 17, and an exhaust pipe 20; the air bag 14 is arranged at the bottom (inside) of the lower pool body 5, and the air bag 14 can be made of a plastic film to save costs; the limiting rod 15 is a plurality of rods transversely fixed in the lower pool body 5 above the air bag 14 and used to limit the upward movement (floating) of the air bag 14, and the limiting rod 15 is always located below the irrigation water level. When the air bag 14 contracts, there is a certain distance between the upper surface of the air bag 14 and the lower surface of the limiting rod 15, and this distance is the expansion distance of the air bag 14. When the air bag 14 is fully expanded, its top contacts the lower surface of the limiting rod 15, and at the same time, when the air bag 14 is fully expanded, it will occupy the space of the irrigation water, making the irrigation The water level rises; the air intake pump 16 and the air exhaust pump 19 are both located outside the irrigation pool 1; one end of the air intake pipe 17 extends into the lower pool body 5 and is connected to the air bag 14, and the other end extends out of the lower pool body 5 and is connected to the air outlet of the air intake pump 16, and a one-way air intake valve 18 is provided on the air intake pipe 16; one end of the exhaust pipe 20 extends into the lower pool body 5 and is connected to the air bag 14, and the other end extends out of the lower pool body 5 and is connected to the air intake of the exhaust pump 19, and an exhaust valve 21 is provided on the exhaust pipe 20; after the air bag 14 is inflated, the irrigation water level moves up, passes through the water seepage layer 6 and the filter layer 7 in turn, and enters the soil layer 8 to replenish water for the vegetable roots. After the air bag 14 is deflated and contracts, the irrigation water level moves down and returns to the lower pool body 5 from the water seepage hole 3 of the partition 2. When there are multiple irrigation pools 1 arranged side by side, these irrigation pools 1 can share one or more air intake pumps 16 , exhaust pumps 19 , and water intake pumps 11 .

[0024] The water level monitoring tube 22 is a transparent tube fixed on the outer wall of the irrigation pool 1, and its lower end is connected to the lower pool body 5. The water level monitoring tube 22 is provided with scale lines, and the water level in the irrigation pool 1 can be intuitively understood through the scale lines of the water level monitoring tube 22. The first position monitoring point, the second position monitoring point, and the third position monitoring point are set on the water level monitoring tube 22, wherein the first position monitoring point is flush with the middle and lower part of the soil layer 8 (the specific position can be adjusted up and down according to the growth of the root system of the planted vegetables), the second position monitoring point is flush with the upper surface of the partition 2, and the third position monitoring point is located between the lower surface of the partition 2 and the limit rod 15.

[0025] (2) Planting vegetables: Fill the surrounding area of ​​the irrigation pond 1 with soil (a greenhouse may be built on top of it), and plant vegetables in the soil layer 8 of the irrigation pond 1.

[0026] (3) Replenishing irrigation water: Open the exhaust valve 21 and the water inlet valve 10, start the water inlet pump 11 to send the irrigation water into the lower tank body 5 through the water inlet pipe 9. After the irrigation water level reaches the second position monitoring point, the water inlet pump 11 is stopped and the exhaust valve 21 and the water inlet valve 10 are closed at the same time.

[0027] (4) Vegetable irrigation: After the vegetables are planted on the soil layer 8, when irrigation is needed, the air pump 16 is started (to inflate the air bag 14). The air bag 14 expands and squeezes the irrigation water in the lower pool 5. The irrigation water level rises and gradually covers the partition 2, the permeable layer 6, the filter layer 7, and enters the soil layer 8. When the irrigation water level reaches the first position monitoring point, the air pump 16 stops.

[0028] (5) Stop irrigation: When the irrigation water has been soaking in the soil layer 8 for a set time, the exhaust valve 21 is opened, the exhaust pump 19 is started, the gas in the air bag 14 is pumped out, and the irrigation water level drops. When the irrigation water level drops to the second monitoring point, the exhaust pump 19 is stopped and the irrigation is completed. Example 2

[0029] The difference between this embodiment and embodiment 1 is that: Based on Example 1, this embodiment further improves the irrigation system in step (1), specifically: a controller is arranged outside the irrigation pool 1, and the water inlet pump 11, the air inlet pump 16, the exhaust pump 19, the exhaust valve 21, the water inlet valve 10, and the drain valve 13 are electrically connected to the controller respectively, and can be started and stopped under the control of the controller; at the same time, a water level sensor electrically connected to the controller is installed in the water level monitoring pipe 22, and the water level sensor is used to monitor the positions of the first position monitoring point, the second position monitoring point, and the third position monitoring point, and transmit the monitored position signal to the controller.

[0030] When the air intake pump 16 is started, the air bag 14 expands and the irrigation water level rises until it exceeds the filter layer 7 and reaches the first position monitoring point. The water level sensor transmits the position signal to the controller, and the controller controls the air intake pump 16 to stop.

[0031] When the irrigation water is continuously immersed in the soil layer 8 for a set time, the controller controls the exhaust pump 19 to start, extracts the gas from the airbag 14, and the irrigation water level drops. When the irrigation water level drops to the second position monitoring point, the water level sensor transmits the position signal to the controller, and the controller controls the exhaust pump 19 to stop.

[0032] When the exhaust pump 19 and the intake pump 16 are not working, when the water level sensor detects that the water level in the lower pool body 5 reaches the third position monitoring point, the controller controls the water inlet pump 11 (while the water inlet valve 10 is opened) to start and replenish water into the lower pool body 5 through the water inlet pipe 9 until the irrigation water level reaches the second position monitoring point, and then the controller controls the water inlet pump 11 to stop.

[0033] Thus, in the above step (3), when the irrigation water replenishment operation is performed, the controller controls the exhaust valve 21 and the water inlet valve 10 to open, and controls the water inlet pump 11 to start, and delivers the irrigation water into the lower pool body 5 through the water inlet pipe 9. After the irrigation water level reaches the second position monitoring point, the water level sensor transmits the position signal to the controller, and the controller controls the water inlet pump 11 to stop, and at the same time closes the exhaust valve 21 and the water inlet valve 10.

[0034] In the above step (4), when the vegetable irrigation operation is performed, the controller controls the air pump 16 to start, the air bag 14 expands, and squeezes the irrigation water in the lower pool 5. The irrigation water level rises and gradually covers the partition 2, the water permeability layer 6, and the filter layer 7, and enters the soil layer 8. When the irrigation water level reaches the second position monitoring point, the water level sensor transmits the position signal to the controller, and the controller controls the air pump 16 to stop, so that the irrigation water irrigates and replenishes the soil layer 8 (the replenishment time is 60-120s).

[0035] In the above step (5), when the irrigation is stopped, after the irrigation water has been soaking in the soil layer for a set time, the controller controls the exhaust valve 21 to open and the exhaust pump 19 to start, so as to extract the gas in the airbag 14, causing the airbag 14 to shrink and the irrigation water level to drop. When the irrigation water level drops to the second position monitoring point, the water level sensor transmits a position signal to the controller, and the controller controls the exhaust pump 19 to stop, thereby completing the irrigation.

[0036] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0037] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An irrigation system for vegetable planting, comprising an irrigation pool and a water level raising mechanism, characterized in that: The irrigation pool is an anti-seepage hardened pool, in the middle of which is placed a partition that divides the irrigation pool into an upper pool body and a lower pool body, on which are arranged a plurality of seepage holes, in the upper pool body above the partition, a seepage layer, a filtration layer, and a soil layer are sequentially laid from bottom to top, in the lower pool body below the partition, irrigation water is filled, and an inlet pipe with a water inlet valve is installed on the upper part of the side wall of the lower pool body; the water level raising mechanism comprises an air bag, a limit rod, an air intake pump, an exhaust pump, an air intake pipe, and an exhaust pipe; the air bag is arranged at the bottom of the lower pool body; the limit rod is a plurality of rods that are transversely fixed in the lower pool body above the air bag and are used to limit the air bag from rising to falling. The movable rod body, and the limit rod is always located below the irrigation water level; the air intake pump and the exhaust pump are both located outside the irrigation pool; one end of the air intake pipe extends into the lower pool body and is connected with the air bag, and the other end extends out of the lower pool body and is connected with the air outlet of the air intake pump, and a one-way air intake valve is provided on the air intake pipe; one end of the exhaust pipe extends into the lower pool body and is connected with the air bag, and the other end extends out of the lower pool body and is connected with the air intake of the exhaust pump, and an exhaust valve is provided on the exhaust pipe; after the air bag is inflated, the irrigation water level moves up and exceeds the filter layer and enters the soil layer, and after the air bag is deflated and contracted, the irrigation water level moves down and returns to the lower pool body.

2. The vegetable planting irrigation system according to claim 1, characterized in that: The water seepage layer is composed of stones or pebbles with a particle size of 15-35 mm; the filter layer is composed of stones or pebbles with a particle size of 2-7 mm.

3. The vegetable planting irrigation system according to claim 1, characterized in that: The partitions are multiple plates placed transversely on a preset step in the middle of the irrigation pool.

4. The vegetable planting irrigation system according to claim 1, characterized in that: A drainage pipe with a built-in water outlet valve is installed at the lower part of the side wall of the lower pool body.

5. The vegetable planting irrigation system according to any one of claims 1 to 4, characterized in that: It also includes a water level monitoring tube, which is a transparent tube fixed on the outer wall of the irrigation pool, and its lower end is connected to the lower pool body. Scale lines are provided on the water level monitoring tube, and a first position monitoring point, a second position monitoring point, and a third position monitoring point are set on the water level monitoring tube, wherein the first position monitoring point is flush with the lower middle part of the soil layer, the second position monitoring point is flush with the upper surface of the partition, and the third position monitoring point is located between the lower surface of the partition and the limit rod.

6. The vegetable planting irrigation system according to any one of claim 5, characterized in that: A water inlet pump is connected outside the water inlet pipe.

7. The vegetable planting irrigation system according to claim 6, characterized in that: A controller is provided outside the irrigation pool, and the water inlet pump, air inlet pump, and air exhaust pump are electrically connected to the controller respectively, and can be started and stopped under the control of the controller; at the same time, a water level sensor electrically connected to the controller is installed in the water level monitoring pipe, and the water level sensor is used to monitor the positions of the first position monitoring point, the second position monitoring point, and the third position monitoring point, and transmit the monitored position signal to the controller; When the air intake pump is started, the air bag expands, and the irrigation water level rises until the height exceeds the filter layer and reaches the first position monitoring point. The water level sensor transmits the position signal to the controller, and the controller controls the air intake pump to stop; When the irrigation water soaks in the soil layer for a set time, the controller starts the exhaust pump to extract the gas in the airbag, and the irrigation water level drops. When the irrigation water level drops to the second monitoring point, the water level sensor transmits the position signal to the controller, and the controller stops the exhaust pump. When both the exhaust pump and the intake pump are not working, when the water level sensor detects that the water level in the lower pool reaches the third position monitoring point, the controller controls the water inlet pump to start and replenish water into the lower pool through the water inlet pipe until the irrigation water level reaches the second position monitoring point, and then the controller controls the water inlet pump to stop.

8. An irrigation method for the vegetable planting irrigation system as claimed in claim 7, characterized in that: The following steps are involved: S1. Supplement irrigation water: open the exhaust valve, start the water inlet pump to send irrigation water into the lower pool through the water inlet pipe, and after the irrigation water level reaches the second position monitoring point, the water inlet pump is stopped and the exhaust valve is closed at the same time; S2. Vegetable irrigation: After the vegetables are planted on the soil layer, when irrigation is needed, the air pump is started, the air bag expands, and the irrigation water in the lower pool is squeezed. The irrigation water level rises and gradually covers the partition, the water seepage layer, and the filter layer, and enters the soil layer. When the irrigation water level reaches the first position monitoring point, the air pump is stopped; S3. Stop irrigation: After the irrigation water has been soaking in the soil layer for a set time, open the exhaust valve, start the exhaust pump, extract the gas in the air bag, and the irrigation water level drops. When the irrigation water level drops to the second monitoring point, the exhaust pump stops and the irrigation is completed.

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