CN113812331B - Water supply system for farmland - Google Patents

Abstract

The utility model relates to a technical field that farmland supplied water, especially, relate to a water supply system for farmland, including seting up at subaerial well and the connecting pipe one of being connected with the well, the one end that the well was kept away from to the connecting pipe one is provided with sprays the subassembly, be provided with the power spare that is used for supplying water on the connecting pipe one, subaerial aqua storage tank that is used for the water storage, be provided with in the aqua storage tank and be used for the connecting pipe two of being connected with connecting pipe one, be provided with the backward flow subassembly on the aqua storage tank, the backward flow subassembly includes back flow and transfer pipe, the back flow is close to and sprays the subassembly setting, back flow and aqua storage tank pass through transfer union coupling, be provided with the filter tank that is used for filtering impurity on the transfer pipe, be provided with the cleaning device who is used for the clearance impurity in the filter tank. The method has the effect of saving water resources.

Description

Water supply system for farmland

Technical Field

The application relates to the technical field of farmland water supply, in particular to a farmland water supply system.

Background

The farmland water supply is generally used for irrigating farmlands, the irrigation modes of the farmlands comprise irrigation, common irrigation and micro-irrigation, the traditional irrigation comprises furrow irrigation, flood irrigation and flood irrigation, but the irrigation modes tend to have larger water consumption and low water utilization rate, and are relatively unreasonable irrigation modes, so that the current common irrigation is a common irrigation mode, and the main method is to supply water by using a water supply system and then spray the water into the air through a spray head for irrigation.

The related art water supply system for farmland includes a reservoir and a water supply device, the water supply device is connected with the reservoir, an irrigation device for irrigation is arranged on the water supply device, the water supply device guides water from the reservoir into the irrigation device, and then irrigates the farmland on the ground surface.

With respect to the related art described above, the inventors consider that when the amount of water irrigated is excessive, water may penetrate deep into the ground through the ground surface as time increases, and is inconvenient for crops to use, resulting in waste of water resources.

Disclosure of Invention

In order to save water resources, the application provides a water supply system for farmland.

The application provides a water supply system for farmland adopts following technical scheme:

the utility model provides a water supply system for farmland, includes the first connecting pipe of seting up subaerial well and being connected with the well, the one end that the well was kept away from to the first connecting pipe is provided with sprays the subassembly, be provided with the power spare that is used for supplying water on the first connecting pipe, subaerial aqua storage tank that is used for the water storage, be provided with in the aqua storage tank and be used for the second connecting pipe of being connected with the first connecting pipe, be provided with the backward flow subassembly on the aqua storage tank, the backward flow subassembly includes back flow and transfer pipe, the back flow is close to spraying the subassembly setting, back flow and aqua storage tank pass through transfer union coupling, be provided with the filter tank that is used for filtering impurity on the transfer pipe, be provided with the cleaning device who is used for the clearance impurity in the filter tank.

Through adopting above-mentioned technical scheme, after water irrigates through spraying the subassembly, unnecessary water enters into the transfer intraductal through the back flow, then enters into the aqua storage tank through the transfer intraductal, and the water in the aqua storage tank can pass through the connecting pipe and pass through to spray once more in spraying the subassembly, carries out cyclic utilization to water, water economy resource.

Optionally, spray the subassembly and include installation pipe and shower nozzle, installation pipe and connecting pipe are connected, the shower nozzle sets up on the installation pipe, the installation pipe buries underground, the shower nozzle is kept away from the one end of installation pipe and is extended to the outside on ground, the back flow sets up subaerial, and sets up in one side of shower nozzle, a plurality of inlet openings have been seted up to one side that is close to ground on the back flow.

Through adopting above-mentioned technical scheme, water enters into in the connecting pipe one, then enters into shower nozzle department blowout through the installation tube, sprays the farmland, and unnecessary water enters into in the back flow through the inlet opening in order to store it through the play basin.

Optionally, be provided with the control assembly who is used for supplying water on the aqua storage tank, the control assembly includes control valve one, control valve two, controller and is used for detecting the induction piece one of aqua storage tank interior water level, control valve one sets up the switch that is used for controlling connecting pipe one on connecting pipe one, control valve two sets up the switch that is used for controlling connecting pipe two on connecting pipe two, induction piece one sets up in the aqua storage tank, the controller sets up on the aqua storage tank, control valve one with control valve two and controller electricity are connected, induction piece one and the signal receiving part electricity of controller are connected.

Through adopting above-mentioned technical scheme, when the water level in the aqua storage tank is higher, first case controller of sensing piece sends the signal, closes control valve and opens control valve two, sprays in letting in the connecting pipe one with the water in the aqua storage tank through connecting pipe two, and reasonable distributes and sprays the water in aqua storage tank and the well.

Optionally, export and the transfer union coupling of filtering ponds, the exit of filtering ponds is provided with the filter screen that is used for filtering impurity, cleaning device includes clearance board, roof and is used for adjusting the promotion subassembly of clearance board position, the roof sets up the opening part at the filtering ponds, clearance board slides in the filtering ponds and sets up, the mounting groove has been seted up in the bottom of filtering ponds, the promotion subassembly sets up in the mounting groove and is connected with the clearance board.

Through adopting above-mentioned technical scheme, when water flows through the transfer pipe, enter into in the filtering ponds and filter the back through the filter screen and enter into the aqua storage tank, filter the impurity in the aquatic department, reduce the impurity in the aqua storage tank too much and lead to the phenomenon that second appearance of connecting pipe is blockked up.

Optionally, a plurality of clearance holes that are used for filterable have been seted up on the clearance board, the clearance board has been seted up to one side that is close to the roof and has been rotated the groove, one side that the roof is close to the open-ended is provided with the portion of resisting, the portion of resisting corresponds the setting with the groove of rotating, the groove inner wall of rotating is circular-arc.

Through adopting above-mentioned technical scheme, when pushing the subassembly and driving the clearance board and remove, the clearance board removes to with roof butt, rotates groove and abutment portion butt, and the promotion subassembly continues to promote the clearance board and rotates, and the clearance board rotates, pours the impurity out the filtering ponds, clears up the impurity.

Optionally, the drive subassembly includes transfer line, gear and drives the driving piece that is used for driving the transfer line and removes, the driving piece sets up in the mounting groove, the transfer line sets up in the mounting groove, and one end extends to in the filtering ponds and the clearance board is connected, the tooth's socket has been seted up to the side of transfer line, the gear sets up the output at the driving piece, gear and tooth's socket meshing.

Through adopting above-mentioned technical scheme, the driving piece passes through the gear and drives the transfer line and remove, and the transfer line removes and promotes the clearance board and remove to clear up impurity.

Optionally, one side that the clearance board is close to the transfer line is provided with the sliding frame, the transfer line deviates from the one end rotation of driving piece and is provided with the slider, the slider slides in the sliding frame and sets up, be provided with the elastic component that is used for adjusting the slider position in the sliding frame, slider and sliding frame inner wall are connected to the elastic component.

Through adopting above-mentioned technical scheme, when the transfer line drives the clearance board and removes to with roof butt, the catch bar continues to drive the clearance board and remove, and when the clearance board rotated, the slider rotated relative transfer line simultaneously, and the slider removes in the sliding frame, reduces the transfer line and appears interfering clearance board pivoted phenomenon.

Optionally, be provided with reset assembly on the transfer line, reset assembly includes reset lever and is used for adjusting the piece that resets of clearance board position, the reset lever is circular-arc, the one end and the slider of reset lever are connected, and the other end runs through the transfer line setting, the reset lever rotates the setting on the transfer line, reset piece cover is established in the outside of reset lever, two of reset piece are connected with slider and transfer line respectively.

Through adopting above-mentioned technical scheme, set up reset assembly and adjust the position of clearance board for after clearance board and the roof separation, clearance board can get back to initial position, so that clear up the impurity in the filtering ponds again.

Optionally, the edge of clearance board is provided with the baffle that is the U font, the opening of baffle sets up towards the roof.

Through adopting above-mentioned technical scheme, set up the baffle on the clearance board, reduce impurity and appear falling the phenomenon at the clearance board, stability when promoting the clearance impurity.

Optionally, a second sensing member for detecting the water level in the filter tank is arranged in the filter tank, the second sensing member is arranged on the inner wall of the filter tank, and the second sensing member is electrically connected with the controller.

Through adopting above-mentioned technical scheme, when impurity in the filter tank is more, the filter screen can lead to the fact the water level in the filter tank to rise because of blockking up two, and after the water level in the filter tank was detected to sensing piece two, the controller control driving piece drove the clearance board and removes the impurity and clear up, promotes the filter effect to water.

Drawings

Fig. 1 is a schematic view of a water supply system for farmland according to an embodiment of the present application.

Fig. 2 is a structural view of a spray assembly in a water supply system for farmland according to an embodiment of the present application.

Fig. 3 is a structural view of a return assembly in a water supply system for farmland according to an embodiment of the present application.

Fig. 4 is a structural view of a control assembly in a water supply system for farmland according to an embodiment of the present application.

Fig. 5 is a structural view of a cleaning device in a water supply system for farmland according to an embodiment of the present application.

Fig. 6 is a structural view of a top plate in the water supply system for farmland according to the embodiment of the present application.

Fig. 7 is a structural view of a pushing assembly in a water supply system for farmland according to an embodiment of the present application.

Fig. 8 is a structural view of a reset assembly in a farmland water supply system according to an embodiment of the present application.

Reference numerals: 1. ground surface; 11. a filtering tank; 111. a second induction piece; 12. a filter screen; 13. a mounting groove; 2. a water well; 21. a first connecting pipe; 22. a power member; 3. a spray assembly; 31. installing a pipe; 32. a spray head; 4. a water storage tank; 41. a second connecting pipe; 5. a reflow assembly; 51. a return pipe; 511. a communicating pipe; 512. a water inlet hole; 52. a transfer pipe; 6. a control assembly; 61. a first control valve; 62. a second control valve; 63. a controller; 64. a first induction piece; 7. a cleaning device; 71. a cleaning plate; 711. a rotating groove; 712. a baffle; 72. a pushing assembly; 721. a driving member; 722. a transmission rod; 723. a gear; 724. tooth slots; 73. a top plate; 731. a resisting part; 732. a limit part; 8. a sliding frame; 81. a slide block; 82. an elastic member; 83. a clamping plate; 9. a reset assembly; 91. a reset lever; 92. and a reset piece.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The application discloses a water supply system for farmland. Referring to fig. 1 and 2, the water supply system for farmland includes a water well 2 provided on the ground 1 and a first connection pipe 21 provided on the ground 1 and connected to the water well 2, one end of the first connection pipe 21 is inserted into the water well 2, the other end is provided with a spraying assembly 3, a power member 22 is provided on the first connection pipe 21, the power member 22 can be provided as a water pump, and water enters the spraying assembly 3 from the water well 2 through the first connection pipe 21 to be sprayed under the action of the water pump.

Referring to fig. 2 and 3, the spray assembly 3 includes a mounting tube 31 and a plurality of spray nozzles 32 disposed on the mounting tube 31, the spray assembly 3 is provided with a plurality of spray nozzles 32 disposed on the mounting tube 31 in a length direction of the mounting tube 31, and the plurality of spray assemblies 3 are disposed in parallel with each other at intervals so that the plurality of spray nozzles 32 are uniformly distributed, the mounting tube 31 is buried in the ground 1, the mounting tube 31 is connected with the first connecting tube 21, one end of the spray nozzle 32 is connected with the mounting tube 31, and the other end extends to the ground 1 so as to uniformly irrigate the farmland.

Referring to fig. 2 and 3, a water storage tank 4 is provided on the ground 1, a backflow assembly 5 is provided on the water storage tank 4, the backflow assembly 5 includes a plurality of backflow pipes 51 and a transfer pipe 52, the backflow pipes 51 are provided and are arranged on the ground 1, the backflow pipes 51 are arranged at intervals in parallel, a communicating pipe 511 is provided between the backflow pipes 51, the backflow pipes 51 are connected through the communicating pipe 511, the backflow pipes 51 and the mounting pipes 31 are arranged in a crossing manner, namely, the backflow pipes 51 are arranged between two adjacent mounting pipes 31, one end of the transfer pipe 52 is connected with the backflow pipes 51, the other end is connected with the water storage tank 4, a second connecting pipe 41 is arranged in the water storage tank 4, one end of the second connecting pipe 41, which is away from the water storage tank 4, is communicated with the first connecting pipe 21, the second connecting pipe 41 is arranged on one side, close to the water well 2, of the backflow pipes 51 are provided with a plurality of water inlets 512, and the plurality of water inlets 512 are arranged along the length direction of the backflow pipes 51. When irrigation is carried out, redundant water enters the return pipe 51 through the water inlet hole 512, then enters the water storage tank 4 through the transfer pipe 52, and then is sprayed again through the second connecting pipe 41 for use, so that the water resource utilization efficiency is improved.

Referring to fig. 3 and 4, a control unit 6 for controlling water supply is provided on the water storage tank 4, the control unit 6 includes a first control valve 61, a second control valve 62, a controller 63, and a first sensing member 64, the first sensing member 64 may be provided as a liquid level sensor and is provided in the water storage tank 4 for detecting the height of the water level in the water storage tank 4, the first control valve 61 is provided on the first connection pipe 21 for controlling the switching of the first connection pipe 21, the second control valve 62 is provided on the second connection pipe 41 for controlling the switching of the second connection pipe 41, the first control valve 61 and the second control valve 62 are both provided as solenoid valves in this embodiment, the controller 63 is provided on the water storage tank 4, the first sensing member 64 is electrically connected to a signal receiving end of the controller 63, and a control end of the controller 63 is connected to the first control valve 61, the second control valve 62, and the switching of the power member 22 for controlling the same. After the first sensing part 64 detects that the water level in the water storage tank 4 reaches a preset value, a signal is sent to the controller 63, the controller 63 adjusts the first control valve 61 to be closed, the second control valve 62 is opened, and water in the water storage tank 4 is discharged for irrigation.

Referring to fig. 3 and 4, a filter tank 11 is provided on a transfer pipe 52, the transfer pipe 52 is provided to penetrate through the filter tank 11, a filter screen 12 is provided at an outlet in the filter tank 11, water enters the filter tank 11 through the transfer pipe 52, is filtered by the filter screen 12, and flows into the water storage tank 4 through the transfer pipe 52 again, so that blocking of the second connecting pipe 41 is reduced. In order to facilitate cleaning of impurities in the filter tank 11, a cleaning device 7 for cleaning impurities is provided in the filter tank 11.

Referring to fig. 4 and 5, the cleaning device 7 includes a cleaning plate 71, a pushing assembly 72 and a top plate 73, the cleaning plate 71 is disposed near the bottom of the filter tank 11, a mounting groove 13 is formed in the bottom of the filter tank 11, the pushing assembly 72 is disposed in the mounting groove 13, the cleaning plate 71 is provided with two cleaning plates 71, the two cleaning plates 71 are disposed side by side in the filter tank 11, the top plate 73 is disposed at the opening edge of the filter tank 11 and corresponds to the cleaning plate 71, a plurality of cleaning holes for removing impurities are formed in the cleaning plate 71, the cleaning holes are uniformly spaced on the cleaning plate 71, a rotating groove 711 is formed in one side of the cleaning plate 71 near the top plate 73, the rotating groove 711 is disposed on one side of the cleaning plate 71 far from the other cleaning plate 71, the inner wall of the rotating groove 711 is arc-shaped, a resisting part 731 is disposed on one side of the top plate 73 near the opening, and the resisting part corresponds to the rotating groove 711, and the pushing assembly 72 is connected with the cleaning plate 71. When the impurity needs to be cleaned, the pushing assembly 72 drives the cleaning plate 71 to move, the cleaning plate 71 drives the impurity to move, when the cleaning plate 71 moves to the opening, the resisting part 731 is buckled with the rotating groove 711, the cleaning plate 71 is continuously pushed to move, the cleaning plate 71 rotates around the resisting part 731, and the impurity is poured out to the outside of the water storage tank 4.

Referring to fig. 5 and 6, the stopper portion 731 is provided with a stopper portion 732, and one side of the stopper portion 732 near the cleaning plate 71 is inclined by 45 degrees in the horizontal direction, and when the cleaning plate 71 rotates 45 degrees around the stopper portion 731, the stopper portion 732 abuts against the cleaning plate 71, and the rotation of the cleaning plate 71 is stopped, and the foreign matter is discharged. Reducing the phenomenon that impurities are poured into the water storage tank 4 again due to the overlarge rotating angle of the cleaning plate 71.

Referring to fig. 5 and 7, the pushing assembly 72 includes a driving member 721, a driving rod 722 and a gear 723, the driving member 721 may be configured as a motor, and the motor is disposed in the mounting groove 13, the driving rod 722 is disposed in the mounting groove 13 in a vertical direction, one end of the driving rod passes through the mounting groove 13 and extends into the water storage groove 4 to be connected with the cleaning plate 71, the gear 723 is disposed at an output end of the motor, a tooth slot 724 is formed at one side of the driving rod 722 along a length direction thereof, the gear 723 is engaged with the tooth slot 724, and the motor drives the driving rod 722 to move through the gear 723, thereby adjusting a position of the cleaning plate 71.

Referring to fig. 7 and 8, a sliding frame 8 is provided on one side of the cleaning plate 71 near the driving rod 722, a sliding block 81 is provided at an end of the driving rod 722, the sliding block 81 is slidably provided in the sliding block 81 in a vertical direction along a direction towards the baffle 712, the driving rod 722 is rotationally connected with the sliding block 81, when the driving rod 722 drives the cleaning plate 71 to move to abut against the abutment part 731, the cleaning plate 71 is continuously pushed, the cleaning plate 71 is rotationally moved, the sliding block 81 slides in the sliding frame 8, and meanwhile, the driving rod 722 rotates relative to the sliding block 81.

Referring to fig. 7 and 8, in order to facilitate the return of the cleaning plate 71 to the initial state after cleaning the foreign matters, a reset assembly 9 is provided on the driving rod 722, the reset assembly 9 includes a reset rod 91 and a reset member 92, the reset member 92 may be provided as a spring, the spring is in a circular arc shape, one end of the spring is connected with the driving rod 722, the other end is connected with the sliding block 81, the shape of the reset rod 91 corresponds to that of the spring, one end of the reset rod 91 is connected with the sliding block 81, the other end passes through the driving rod 722 and is rotatably provided on the driving rod 722, when the driving rod 722 drives the cleaning plate 71 to rotate, the reset rod 91 rotates on the driving rod 722 and compresses the spring, and after the driving rod 722 drives the cleaning plate 71 to return to the water storage tank 4, the cleaning plate 71 is driven to return to the initial position under the action of the reset member 92 so as to clean the foreign matters again. The clamping plate 83 is arranged on the sliding frame 8, the clamping plate 83 is arranged on one side of the transmission rod 722, which is away from the resisting part 731, and when the cleaning plate 71 rotates to drive the clamping plate 83 to abut against the side surface of the transmission rod 722, the cleaning plate 71 rotates to an initial state.

Referring to fig. 7 and 8, when the cleaning plate 71 rotates, the slider 81 slides in the slide frame 8, and in order that the slider 81 can return to the initial position when the cleaning plate 71 rotates in a horizontal state, an elastic member 82 is provided in the slide frame 8, the elastic member 82 may be provided as a spring, the spring is provided along a direction in which the slider 81 slides in the slide frame 8, one end of the spring abuts against the slider 81, the other end abuts against an inner wall of the slide frame 8, the spring is compressed when the slider 81 slides, and after the cleaning plate 71 and the resisting portion 731 are separated, the spring drives the slider 81 to return to the initial position so as to adjust the position of the cleaning plate 71 therein. The baffle 712 is arranged at the edge of the cleaning plate 71, the baffle 712 is U-shaped, the opening is arranged towards the resisting part 731, the baffle 712 shields impurities, the phenomenon that the cleaning plate 71 is dropped out when the impurities move is reduced, and the impurity removing effect is improved.

Referring to fig. 4, a second sensing member 111 for detecting the water level in the filter tank 11 is disposed in the filter tank 11, the second sensing member 111 may be configured as a liquid level sensor disposed on the inner wall of the filter tank 11, the second sensing member 111 is connected to the signal receiving end of the controller 63, and the switch of the driving member 721 is electrically connected to the control end of the controller 63. When the impurity in the filter tank 11 is more, the filter screen 12 can appear being blocked, after the filter screen 12 appears being blocked, along with the continuous entering of water into the filter tank 11, the water level in the filter tank 11 can increase, when level sensor detects the water level in the filter tank 11 and increases, sends the signal to the controller 63, and the controller 63 controls the driving piece 721 to open, clears up the impurity in the filter tank 11.

The implementation principle of the application is as follows: when irrigation is carried out on farmland, superfluous water on the earth surface enters the water storage tank 4 through the backflow component 5, is transported to the farmland again through the second connecting pipe 41 for irrigation, and is recycled, so that water resources are saved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (4)

1. The utility model provides a water supply system for farmland, includes well (2) and the connecting pipe (21) of being connected with well (2) of seting up on ground (1), its characterized in that: one end of the first connecting pipe (21) far away from the water well (2) is provided with a spraying component (3), a power piece (22) for supplying water is arranged on the first connecting pipe (21), a water storage tank (4) for storing water is arranged on the ground (1), a second connecting pipe (41) for connecting with the first connecting pipe (21) is arranged in the water storage tank (4), a backflow component (5) is arranged on the water storage tank (4), the backflow component (5) comprises a backflow pipe (51) and a transfer pipe (52), the backflow pipe (51) is arranged close to the spraying component (3), the backflow pipe (51) is connected with the water storage tank (4) through the transfer pipe (52), a filter tank (11) for filtering impurities is arranged on the transfer pipe (52), a cleaning device (7) for cleaning impurities is arranged in the filter tank (11), an outlet of the filter tank (11) is connected with the transfer pipe (52), an outlet of the filter tank (11) is provided with a filter impurity (12) for filtering impurities, the cleaning device (7) comprises a filter screen (73) and a top plate (73) for cleaning the filter screen (73) is arranged at the top plate (73), the cleaning plates (71) are arranged in the filter tank (11) in a sliding way, the bottom of the filter tank (11) is internally provided with a mounting groove (13), the pushing component (72) is arranged in the mounting groove (13) and connected with the cleaning plates (71), the two cleaning plates (71) are arranged in the filter tank (11) side by side, a plurality of cleaning holes for filtering are formed in the cleaning plates (71), one side of the cleaning plates (71) close to the top plate (73) is provided with a rotating groove (711), one side of the top plate (73) close to the opening is provided with a resisting part (731), the inner wall of the rotating groove (711) is in an arc shape, the resisting part (732) is provided with a limiting part (732), one side of the limiting part (732) close to the cleaning plates (71) is arranged in a horizontal direction in an inclined mode by 45 degrees, the cleaning plates (71) are arranged in a driving way, when the cleaning plates (71) rotate around the resisting part (731) by 45 degrees, the resisting part (731) is connected with a driving part (722) by the driving part (722), the driving part (722) is arranged in the driving part (722) and the driving part (722) in the driving part (722), and one end extends to the filter tank (11) and is connected with the cleaning plate (71), tooth grooves (724) are formed in the side face of the transmission rod (722), the gear (723) is arranged at the output end of the driving part (721), the gear (723) is meshed with the tooth grooves (724), one side, close to the transmission rod (722), of the cleaning plate (71) is provided with a sliding frame (8), one end, deviating from the driving part (721), of the transmission rod (722) is rotatably provided with a sliding block (81), the sliding block (81) is arranged in the sliding frame (8) in a sliding manner, an elastic part (82) for adjusting the position of the sliding block (81) is arranged in the sliding frame (8), the elastic part (82) is connected with the inner wall of the sliding block (81) and the sliding frame (8), a reset assembly (9) is arranged on the transmission rod (722), the reset assembly (9) comprises a reset rod (91) and a reset part (92) for adjusting the position of the cleaning plate (71), the reset rod (91) is in an arc shape, one end of the reset rod (91) is connected with the sliding block (81) and the other end of the sliding block (81) is arranged on the transmission rod (722) in a penetrating mode, and the reset rod (91) is arranged outside the transmission rod (722), two of the resetting pieces (92) are respectively connected with the sliding block (81) and the transmission rod (722), a U-shaped baffle (712) is arranged at the edge of the cleaning plate (71), an opening of the baffle (712) is arranged towards the top plate (73), and the baffle (712) shields impurities.

2. The water supply system for farmland according to claim 1, characterized in that: spray subassembly (3) are including installing pipe (31) and shower nozzle (32), installing pipe (31) and connecting pipe one (21) are connected, shower nozzle (32) set up on installing pipe (31), installing pipe (31) are buried underground in ground (1), the one end that installing pipe (31) was kept away from to shower nozzle (32) extends to the outside of ground (1), back flow (51) set up on ground (1), and set up in one side of shower nozzle (32), a plurality of inlet openings (512) have been seted up to one side that is close to ground (1) on back flow (51).

3. The water supply system for farmland according to claim 2, characterized in that: the water storage tank is characterized in that a control component (6) for supplying water is arranged on the water storage tank (4), the control component (6) comprises a first control valve (61), a second control valve (62), a controller (63) and a first sensing piece (64) for detecting the water level in the water storage tank (4), the first control valve (61) is arranged on a first connecting pipe (21) and used for controlling the switch of the first connecting pipe (21), the second control valve (62) is arranged on a second connecting pipe (41) and used for controlling the switch of the second connecting pipe (41), the first sensing piece (64) is arranged in the water storage tank (4), the controller (63) is arranged on the water storage tank (4), the first control valve (61) is electrically connected with the second control valve (62) and the controller (63), and the first sensing piece (64) is electrically connected with a signal receiving end of the controller (63).

4. A water supply system for farmland according to claim 3, characterized in that: the filter tank (11) is internally provided with a second sensing piece (111) for detecting the water level in the filter tank (11), the second sensing piece (111) is arranged on the inner wall of the filter tank (11), and the second sensing piece (111) is electrically connected with the controller (63).

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