CN212000909U

CN212000909U - Farmland irrigation system

Info

Publication number: CN212000909U
Application number: CN202020349601.4U
Authority: CN
Inventors: 郭龙珠; 吴壮壮; 王田园; 麻捷超
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-24
Anticipated expiration: 2030-03-19

Abstract

The utility model provides a farmland irrigation system, which comprises a superior water source, an irrigation ditch, a plurality of field blocks and an artificial wetland; water in the upper-level water source flows into the irrigation ditch; the irrigation ditch is provided with a multi-stage gate device along the water flow direction; a plurality of irrigation pipelines are arranged on the upstream side of each stage of gate device; one end of each irrigation pipeline is connected with the upstream area of the gate device in the irrigation agricultural canal and is arranged up and down; the other ends of the irrigation pipelines are connected with a field area; the field pieces are arranged along the direction of the water flow of the irrigation ditches; each field is provided with a drainage agricultural ditch, and sewage discharged by the field is converged into the drainage agricultural ditch and flows into the artificial wetland; the artificial wetland is used for purifying and digesting the sewage discharged from the farmland and discharging purified water; and a circulating pump is arranged at the drainage position of the artificial wetland and used for conveying purified water to the upstream of the irrigation ditch. The utility model discloses can realize multiple functions such as irrigation, drainage, sewage purification, water consumption measurement.

Description

Farmland irrigation system

Technical Field

The utility model belongs to the technical field of the field irrigation technique and specifically relates to a field irrigation system is related to.

Background

In agricultural production, crops must be supplied with sufficient moisture in order to ensure normal growth of the crops and obtain high and stable yield. Therefore, irrigation must be done manually to compensate for the lack of natural rainfall. The gate is often set up on the agricultural canal among present field irrigation system for the sparing is with dividing water, but current from the irrigation water of agricultural canal entering field is difficult accurate measurement, and the reason lies in the farmland department and has almost not had water gaging facility, and this is the problem that a urgent need be solved to farmland water measurement charge.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a farmland irrigation system which can realize multiple functions of irrigation, drainage, sewage purification, water metering and the like.

The technical scheme is as follows: the utility model provides a farmland irrigation system, which comprises a superior water source, an irrigation ditch, a plurality of field blocks and an artificial wetland;

the water in the upper-level water source flows into an irrigation ditch;

the irrigation ditch is provided with a multi-stage gate device along the water flow direction and is used for intercepting the irrigation ditch; a plurality of irrigation pipelines are arranged on the upstream side of each stage of gate device; one end of each irrigation pipeline is connected with the upstream area of the gate device in the irrigation agricultural canal and is arranged up and down; the other ends of the irrigation pipelines are connected with a field area;

the field pieces are arranged along the direction of the water flow of the irrigation ditches; each field is provided with a drainage agricultural ditch, and sewage discharged by the field is converged into the drainage agricultural ditch and flows into the artificial wetland;

the artificial wetland is used for purifying and digesting the sewage discharged from the farmland and discharging purified water; and a circulating pump is arranged at the drainage position of the artificial wetland and used for conveying purified water to the upstream of the irrigation ditch.

Furthermore, each irrigation pipeline is provided with a water meter.

Furthermore, a trash rack is arranged at the water inlet of each irrigation pipeline.

Further, a water outlet of each irrigation pipeline is provided with a cover.

Further, the artificial wetland comprises a primary purification tank and a secondary purification tank; the reed, the cattail with the wide leaves and the duckweed are planted in the primary purification pond and are used for preliminarily digesting nitrogen, phosphorus and heavy metal pollutants in farmland drainage; and rush and lettuce are planted in the secondary purification pond and are used for further digesting nitrogen, phosphorus and heavy metal pollutants which are not digested in the primary purification pond.

Further, the gate device comprises a vertical gate plate, gate piers positioned at the left side and the right side of the gate plate and a horizontal bottom plate; the gate plate can slide up and down along the gate pier to be opened and closed.

Has the advantages that: (1) the utility model is provided with a multi-stage gate device along the water flow direction in the irrigation ditch, can control the water level of the upstream and the downstream, is convenient for self-flow irrigation and drainage, and controls the water level of the field; meanwhile, the gate device can be prefabricated in a factory, is quickly installed on site and is convenient to popularize and apply;

(2) the irrigation pipeline is provided with the water meter, so that the accurate metering of the field water is realized, and the method has important significance for metering and charging the farmland water and saving the field water;

(3) the constructed wetland plays a role in purifying farmland sewage, and bears a water supply source under the condition of insufficient water source, thereby realizing the function of purifying and recycling the farmland sewage.

Drawings

FIG. 1 is a schematic view of a field irrigation system of the present invention;

FIG. 2 is a schematic structural view of the gate device of the present invention;

FIG. 3 is a cross-sectional view of the irrigation canal of the present invention;

FIG. 4 is a side view of the irrigation canal of the present invention;

FIG. 5 is a schematic view of an irrigation pipe of the present invention;

fig. 6 is a schematic view of the cover of the present invention.

Detailed Description

As shown in fig. 1 to 4, the utility model provides a farmland irrigation system, which comprises a higher water source 1, an irrigation ditch 2, a plurality of field blocks 3 and an artificial wetland.

The water in the upper-level water source 1 flows into the irrigation ditch 2.

The irrigation ditch 2 is provided with a multi-stage gate device along the water flow direction and used for intercepting the irrigation ditch 2; a plurality of irrigation pipelines 4 are arranged on the upstream side of each stage of gate device; one end of each of the irrigation pipelines 4 is connected with the upstream area of the gate device in the irrigation agricultural canal 2 and is arranged up and down; the other ends of the irrigation pipelines 4 are connected with the field 3 area. The gate device comprises a vertical gate plate 5, gate piers 6 positioned at the left side and the right side of the gate plate 5 and a horizontal bottom plate 7; the gate plate 5 can slide up and down along the gate pier 6 to be opened and closed.

The plurality of field blocks 3 are arranged along the direction of water flow of the irrigation ditches 2; each field 3 is provided with a drainage agricultural ditch 8, and sewage discharged by the field 3 flows into the artificial wetland after being converged into the drainage agricultural ditch 8. Wherein, the field block that is located irrigation ditch 2 upper reaches can plant the crops of nai waterlogging, and the field block that is located irrigation ditch 2 low reaches can plant the crops of nai drought.

The artificial wetland is used for purifying and digesting the sewage discharged by the field 3 and discharging purified water; and a circulating pump 9 is arranged at the drainage position of the artificial wetland and used for conveying purified water to the upstream of the irrigation ditch 2. The artificial wetland comprises a primary purification tank 10 and a secondary purification tank 11; the primary purification pond 10 is used for planting reed, cattail with wide leaves and duckweed and preliminarily digesting nitrogen, phosphorus and heavy metal pollutants in the drainage water of the field 3; and the secondary purification pond 11 is planted with rush and lotus and is used for further digesting nitrogen, phosphorus and heavy metal pollutants which are not digested in the primary purification pond 10.

Preferably, as shown in fig. 5, each of the irrigation pipes 4 is provided with a water meter 12, and water flows into the field 3 through the water meter 12, so that the water consumption of the field 3 is accurately measured.

Preferably, as shown in fig. 5, a trash rack 13 is arranged at the water inlet of each irrigation pipe 4 to prevent impurities larger than the aperture of the trash rack 13 from entering the water meter 12, so that the measurement accuracy and the service life of the water meter 12 are improved.

Preferably, as shown in fig. 6, the outlet of each of said irrigation pipes 4 is provided with a cap 15. The cover 15 is composed of a round iron sheet and a rubber ring, the cover 15 is opened when water needs to be poured, and the cover 15 is covered when the water pouring is finished.

In this embodiment, two irrigation pipes 4 arranged up and down are arranged on the upstream side of each stage of gate device, when the field 3 needs to be irrigated, water in the upper stage water source 1 flows into the irrigation agricultural canal 2, when the water level of the upper stage water source 1 is not high, namely the water level of the irrigation agricultural canal 2 is located between the two irrigation pipes 4, the opening height of the gate plate 5 can be properly reduced, only the cover 15 of the irrigation pipe 4 below is opened, the water level is raised, and water can enter the field 3 on two sides of the irrigation agricultural canal 2 through the irrigation pipe 4 below; when higher level water source 1 water level is higher, irrigate 2 irrigation canals and ditches when the irrigation pipe 4 of water level above that is promptly, the floodgate board 5 of multistage gate device can be opened greatly to open two irrigation pipe 4's lid 15 simultaneously, improve the upstream and downstream efficiency of watering, realize a plurality of fields 3 simultaneously and supply water promptly. The water flows into the field 3 through the water meter 12, so that the water consumption of the field 3 is accurately measured; when the water source is short, the water source stored in the secondary purification tank 11 of the artificial wetland can enter the upstream of the irrigation ditch 2 through the circulating pump 9 to ensure the water demand of crops in the field 3.

When heavy rain occurs, the water level of the field 3 is higher than that of the irrigation ditch 2, and outward drainage is needed, if the field is used for rice and wheat rotation or the rice is in a green turning stage or in an early stage of joint pulling and tillering, the crops are drought-resistant and waterlogging-resistant, the covers 15 of the two irrigation pipelines 4 can be opened simultaneously, and large gates are opened to accelerate drainage, so that the field crops are prevented from being flooded; if the rice is in the booting and filling stage, the cover 15 of the irrigation pipeline 4 below can be closed, only the cover 15 of the irrigation pipeline 4 above is opened, and then the rainwater exceeding the irrigation pipeline 4 above is drained to the irrigation ditch 2 through the irrigation pipeline 4 above, and the rainwater is stored to a proper water level. A drain pump may be provided downstream of the irrigation pipe 4 to assist in pumping water to the artificial wetland.

Claims

1. An agricultural irrigation system characterized by: comprises a superior water source, an irrigation ditch, a plurality of fields and an artificial wetland;

the water in the upper-level water source flows into an irrigation ditch;

the artificial wetland is used for purifying and digesting the sewage discharged from the field and discharging purified water; and a circulating pump is arranged at the drainage position of the artificial wetland and used for conveying purified water to the upstream of the irrigation ditch.

2. An agricultural irrigation system according to claim 1, wherein: and each irrigation pipeline is provided with a water meter.

3. An agricultural irrigation system according to claim 2, wherein: and a trash rack is arranged at the water inlet of each irrigation pipeline.

4. An agricultural irrigation system according to claim 3, wherein: and a water outlet of each irrigation pipeline is provided with a cover.

5. An agricultural irrigation system according to any one of claims 1 to 4, wherein: the artificial wetland comprises a primary purification tank and a secondary purification tank; the reed, the cattail with wide leaves and the duckweed are planted in the primary purification pond and are used for preliminarily digesting nitrogen, phosphorus and heavy metal pollutants in the field block drainage water; and rush and lettuce are planted in the secondary purification pond and are used for further digesting nitrogen, phosphorus and heavy metal pollutants which are not digested in the primary purification pond.

6. An agricultural irrigation system according to claim 5, wherein: the gate device comprises a vertical gate plate, gate piers positioned on the left side and the right side of the gate plate and a horizontal bottom plate; the gate plate can slide up and down along the gate pier to be opened and closed.