Multifunctional irrigation head system

Abstract

According to the main technical scheme, the multifunctional irrigation head system comprises a movable trolley, and a pre-pump filtering system, a post-pump filtering system, a fertilizer liquid system and a water and fertilizer control cabinet are borne on the trolley; the pre-pumping filtering system, the fertilizer liquid system and the water and fertilizer control cabinet are suitable for irrigation of surface water; the after-pump filtering system, the fertilizer liquid system and the water and fertilizer control cabinet are suitable for irrigation of underground water. The after-pump filtering system comprises a centrifugal filter and an after-pump screen filter; the pre-pump filtering system mainly comprises a pump filtering all-in-one machine or a pre-pump screen filter; the fertilizer liquid system comprises a fertilization tank and a fertilization pump; a PLC control system is arranged in the water and fertilizer control cabinet, the system greatly meets the requirements for different nutrients and deinsectization of farmland irrigation, fertilization and crop growth of different water sources, and meanwhile the irrigation cost and the operation cost are reduced.

Description

Technical Field

[0001] The invention belongs to the field of agricultural water-saving irrigation, and in particular relates to a multifunctional irrigation head system. Background Art

[0002] Agricultural water-saving irrigation is a systematic project. There are many links from farmland water supply to crop output. The primary problem during irrigation is water source extraction. How to improve the utilization rate of water sources, minimize water loss during irrigation, and provide different nutrients and pest control to meet the needs of crop growth, etc., can also improve the utilization rate of irrigation headers. This puts forward innovative requirements for the rationality, economy, and benefit maximization of the header of the irrigation project in the water-saving irrigation system. In some areas, the per capita possession of water resources is relatively low, and the water resources for irrigation include both surface water and groundwater. At present, there is no irrigation header system that is suitable for it. The present invention has developed a multifunctional irrigation header system. This system can not only meet the irrigation needs of small plots and small flows, but also meet the different irrigation needs of different farmers through collective procurement and operation by rural cooperatives, solving the problem that it is not cost-effective for a single farmer to use a multifunctional irrigation header system, and at the same time greatly improves the utilization rate of a multifunctional irrigation header system. Summary of the invention

[0003] To solve the above problems, the multifunctional irrigation head system of the present invention provides an effective combination of a pre-pump filtration system and a post-pump filtration system, a fertilizer liquid system and a water-fertilizer control cabinet, which can solve the problems of irrigation, fertilization, different nutrients required in the growth process of crops and pest control of surface water and groundwater according to local conditions.

[0004] The technical solution of the present invention to solve the above problems is as follows:

[0005] The post-pump filtration system, pre-pump filtration system, fertilizer liquid system and water-fertilizer control cabinet are installed on the mobile vehicle at the same time. The pre-pump filtration system + fertilizer liquid system + water-fertilizer control cabinet are suitable for surface water irrigation; the post-pump filtration system + fertilizer liquid system + water-fertilizer control cabinet are suitable for groundwater irrigation.

[0006] A multifunctional irrigation head system includes a post-pump filtration system, a pre-pump filtration system, a fertilizer liquid system and a water-fertilizer control cabinet; the post-pump filtration system includes a centrifugal filter and a post-pump mesh filter; the pre-pump filtration system mainly includes a pump-filter integrated machine or a pre-pump mesh filter; the fertilizer liquid system includes a fertilizer tank and a fertilizer pump, and the fertilizer tank is provided with a fertilizer tank motor, a fertilizer adding port, a fertilizer tank water inlet pipe connecting pipeline and a fertilizer pump connecting pipeline, the lower end of the fertilizer tank motor is connected to a stirring shaft, the stirring shaft is provided with stirring blades, and one end of the fertilizer tank water inlet pipe connecting pipeline It is connected to the right end of the tee, and the other end is connected to the fertilizer tank. One end of the fertilizer pump connecting pipeline is connected to the fertilizer tank, and the other end is connected to the fertilizer pump; the fertilizer pump is provided with a pump pipe fertilizer liquid connecting pipeline connected to the left end of the tee and a fertilizer pump connecting pipeline connected to the fertilizer tank; a PLC control system is arranged inside the water and fertilizer control cabinet, and the water and fertilizer control cabinet is provided with a first connecting line connected to the fertilizer tank motor, a second connecting line connected to the pump rear screen filter motor, and a third connecting line connected to the pump front filter motor.

[0007] The post-pump filtration system is composed of a centrifugal filter and a post-pump mesh filter. One end of the groundwater inlet quick connector is connected to the groundwater pipe, and the other end is connected to the first connecting pipe. The other end of the first connecting pipe is connected to the centrifugal filter inlet pipe. A water inlet pressure gauge is provided on the centrifugal filter inlet pipe, and the components are fixedly connected.

[0008] The upper end of the centrifugal filter is connected to the second connecting pipe, and the second connecting pipe is provided with an exhaust valve, which can effectively discharge the gas in the pipe, and can solve the problems of low water supply efficiency, pipe burst and water hammer effect; the other end of the second connecting pipe is connected to the third connecting pipe, the other end of the third connecting pipe is connected to the first transition connection, the other end of the first transition connection is connected to the water inlet of the pump rear mesh filter, and the components are fixedly connected; the pump rear mesh filter is provided with a pump rear mesh filter motor, the lower end of the motor has a shaft, and the shaft is provided with a brush; the other end of the water outlet of the pump rear mesh filter is connected to the second transition connection, the other end of the second transition connection is connected to one end of the connecting component, and the connecting component is provided with a water outlet pressure gauge, the other end of the connecting component is connected to one end of the first electric valve, the other end of the first electric valve is connected to the tee, the right end of the tee is connected to one end of the second electric valve, and the other end of the second electric valve is connected to the fourth connecting pipe, and the components after the fourth connecting pipe are the third transition connection, the fifth connecting pipe, and the surface water inlet quick connector in sequence, and the components are fixedly connected.

[0009] A first sewage pipe is arranged at the bottom end of the centrifugal filter, a first sewage valve is arranged on the first sewage pipe, the end of the first sewage pipe is connected to a first sewage quick connector, and the components are fixedly connected.

[0010] A second sewage pipe is arranged at the bottom end of the post-pump screen filter, a second sewage pipe is provided with a second sewage valve, the end of the second sewage pipe is connected to a second sewage quick connector, and the connection between the components is a fixed connection.

[0011] The post-pump filtration system can also be a single centrifugal filter or a post-pump mesh filter or a laminated filter. The combination of the centrifugal filter and the post-pump mesh filter in the present invention is a preferred solution.

[0012] When the filter of the pre-pump filter system is a pump-filter all-in-one, a pre-pump filter motor is arranged on the upper cover plate of the pre-pump filter, a pre-pump filter screen is arranged under the upper cover plate of the pre-pump filter, a pump is arranged at the center of the lower end of the inner part of the pre-pump filter screen, a water outlet is arranged at the lower end of the pump, the pre-pump filter screen is arranged on a support frame, a lifting ear is arranged on the upper part of the support frame, a roller is arranged on the lower part of the support frame, and four rollers are arranged on tracks; when the filter of the pre-pump filter system is a pre-pump mesh filter, the difference is that the pump in the filter screen of the pump-filter all-in-one is arranged outside the filter screen, and is installed in surface water together with the pre-pump mesh filter.

[0013] The system is installed as a whole on a mobile trolley, and a lifting device is installed on the mobile trolley.

[0014] The fixed connection in the present invention is bolt connection or welding; the transition connection is a rigid connection or a flexible connection, and the flexible connection is more adjustable; the connection pipeline and the transition connection can be changed according to the irrigation situation.

[0015] Beneficial effects: A mobile vehicle carries a pre-pump filtration system, a post-pump filtration system, a fertilizer liquid system and a water-fertilizer control cabinet. The combination of the irrigation heads can be changed according to the surface water irrigation or groundwater irrigation conditions in the area, which greatly meets the needs of farmland irrigation, fertilization and nutrients in the crop growth process from different water sources, while reducing irrigation costs and operating costs.

[0016] The groundwater, surface water, pre-pump filtration system and post-pump filtration system in this article are intended to clearly express the content and specific implementation methods of the present invention, and corresponding modifications may be made according to actual application conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 4 is a top view of an embodiment of the present invention.

[0018] Figure 2 It is a left view of an embodiment of the present invention.

[0019] Figure 3 It is a right side view of an embodiment of the present invention.

[0020] Figure 4This is a top view of the pre-pump filter according to an embodiment of the present invention sliding out of the vehicle body along the track.

[0021] Figure 5 Installation diagram for the mobile trolley.

[0022] In order to make the illustration clear, the traditional viewing method of the left view and the right view is slightly changed in this embodiment. Figure 2 The center left view shows the post-pump filtration system. Figure 3 The middle right view shows the pre-pump filtration system and fertilizer liquid system. Figure 5 In-vehicle filtration system, fertilizer liquid system and water and fertilizer control cabinet Figure 2 Top view.

[0023] Figure 1-5 As shown, 1-1 is a groundwater inlet quick connector, 1-2 is an outlet quick connector, 1-3 is a surface water inlet quick connector, 2-1 is a first connecting pipe, 2-2 is a second connecting pipe, 2-3 is a third connecting pipe, 2-4 is a fourth connecting pipe, 2-5 is a fifth connecting pipe, 3-1 is a water inlet pressure gauge, 3-2 is a water outlet pressure gauge, 4 is a centrifugal filter, 4-1 is an inlet pipe, 5 is an exhaust valve, 6-1 is a first transition connection, 6-2 is a second transition connection, 6-3 is a third transition connection, 7-1 is a post-pump screen filter motor, 7-2 is a fertilizer tank motor, 7-3 is a pre-pump filter motor, 8 is a post-pump screen filter, 8-1 is a shaft, 8-2 is a brush, 8-3 is a water inlet, 8-4 is a water outlet, 9 is a connecting component, 10-1 is a first electric valve, 10-2 is a second electric valve, 13-1 is a first sewage discharge valve, 13-2 is the second sewage valve, 14-1 is the first sewage pipe, 14-2 is the second sewage pipe, 15-1 is the first sewage quick connector, 15-2 is the second sewage quick connector, 16 is a three-way, 17-1 is the pump pipe fertilizer liquid connection pipeline, 17-2 is the fertilizer tank water inlet pipe connection pipeline, 17-3 is the fertilizer pump connection pipeline, 18 is the fertilizer tank, 18-1 is the stirring shaft, 18-2 is the stirring blade, 19 is the fertilizer inlet , 20-1 is the first connecting line, 20-2 is the second connecting line, 20-3 is the third connecting line, 21 is the fertilizer pump, 22 is the track, 23 is the water outlet of the pre-pump filter, 24 is the support frame, 25 is the water and fertilizer control cabinet, 26 is the upper cover plate of the pre-pump filter, 27 is the lifting ear, 28 is the roller, 29 is the pump, 30 is the filter screen of the pre-pump filter, 31 is the pump-filter integrated machine, 32 is the lifting device, and 33 is the mobile trolley. DETAILED DESCRIPTION

[0024] The multifunctional irrigation head system of the present invention installs the post-pump filtration system and the pre-pump filtration system, the fertilizer liquid system and the water-fertilizer control cabinet on a mobile trolley at the same time, and combines them according to local conditions. The combination of the post-pump filtration system + the fertilizer liquid system + the water-fertilizer control cabinet is suitable for groundwater irrigation, and the pre-pump filtration system + the fertilizer liquid system + the water-fertilizer control cabinet is suitable for surface water irrigation.

[0025] A multifunctional irrigation head system, including a post-pump filtration system, a pre-pump filtration system, a fertilizer liquid system and a water-fertilizer control cabinet; the post-pump filtration system includes a centrifugal filter 4 and a post-pump mesh filter 8; the pre-pump filtration system mainly includes a pump-filter integrated machine 31 or a pre-pump mesh filter; the fertilizer liquid system includes a fertilizer tank 18 and a fertilizer pump 21, and the fertilizer tank 18 is provided with a fertilizer tank motor 7-2, a fertilizer adding port 19, a fertilizer tank water inlet pipe connecting pipeline 17-2 and a fertilizer pump connecting pipeline 17-3, the lower end of the fertilizer tank motor 7-2 is connected to a stirring shaft 18-1, and the stirring shaft 18-1 is provided with a stirring blade 18-2; one end of the fertilizer tank water inlet pipe connecting pipeline 17-2 is connected to a three-way 16 is connected at the right end, and the other end is connected to the fertilizer tank 18; one end of the fertilizer pump connecting pipeline 17-3 is connected to the fertilizer tank 18, and the other end is connected to the fertilizer pump 21, and the fertilizer pump 21 is provided with a pump pipe fertilizer liquid connecting pipeline 17-1 connected to the left end of the tee 16 and a fertilizer pump connecting pipeline 17-3 connected to the fertilizer tank 18; a PLC control system is provided in the water and fertilizer control cabinet 25, and the water and fertilizer control cabinet 25 is provided with a first connecting line 20-1 connected to the fertilizer tank motor 7-2, a second connecting line 20-2 connected to the pump rear mesh filter motor 7-1, and a third connecting line 20-3 connected to the pump front filter motor 7-3.

[0026] When the post-pump filtration system is composed of a centrifugal filter 4 and a post-pump mesh filter 8, one end of the groundwater inlet quick connector 1-1 is connected to the groundwater pipeline, and the other end of the groundwater inlet quick connector 1-1 is connected to the first connecting pipeline 2-1, and the other end of the first connecting pipeline 2-1 is connected to the centrifugal filter inlet pipeline 4-1, and a water inlet pressure gauge 3-1 is provided on the centrifugal filter inlet pipeline 4-1, and the various components are fixedly connected; the upper end of the centrifugal filter 4 is connected to the second connecting pipeline 2-2, and an exhaust valve 5 is provided on the second connecting pipeline 2-2; the exhaust valve 5 can effectively discharge the gas in the pipeline, which can solve the problems of low water supply efficiency, pipe burst, and water hammer effect; the other end of the second connecting pipeline 2-2 is connected to the third connecting pipeline 2-3, and the other end of the third connecting pipeline 2-3 is connected to the first transition connection 6-1, and the other end of the first transition connection 6-1 is connected to the post-pump mesh filter The water inlet 8-3 of the filter is connected, and the various components are fixedly connected; a pump-after-the-pump mesh filter motor 7-1 is provided on the pump-after-the-pump mesh filter 8, and a shaft 8-1 is connected to the lower end of the motor, and a brush 8-2 ​​is provided on the shaft; the other end of the pump-after-the-pump mesh filter water outlet 8-4 is connected to the second transition connection 6-2, and the other end of the second transition connection 6-2 is connected to one end of the connecting component 9, and a water outlet pressure gauge 3-2 is provided on the connecting component 9, and the other end of the connecting component 9 is connected to one end of the first electric valve 10-1, and the other end of the first electric valve 10-1 is connected to the tee 16, and the right end of the tee 16 is connected to one end of the second electric valve 10-2, and the other end of the second electric valve 10-2 is connected to the fourth connecting pipe 2-4, and the components after the fourth connecting pipe 2-4 are the third transition connection 6-3, the fifth connecting pipe 2-5, and the surface water inlet quick connector 1-3 in sequence, and the various components are fixedly connected.

[0027] A first sewage pipe 14-1 is provided at the bottom end of the centrifugal filter 4. A first sewage valve 13-1 is provided on the first sewage pipe 14-1. The end of the first sewage pipe 14-1 is connected to a first sewage quick connector 15-1. The connection between the components is fixed.

[0028] A second sewage pipe 14-2 is provided at the bottom end of the post-pump screen filter 8, a second sewage pipe 14-2 is provided with a second sewage valve 13-2, the end of the second sewage pipe 14-2 is connected to a second sewage quick connector 15-2, and the connection between the components is a fixed connection.

[0029] When the filter of the pre-pump filtration system is a pump-filter all-in-one 31, a pre-pump filter motor 7-3 is arranged on the upper cover plate 26 of the pre-pump filter, a pre-pump filter screen 30 is arranged under the upper cover plate 26 of the pre-pump filter, a pump 29 is arranged at the center of the inner lower end of the pre-pump filter screen 30, a pre-pump filter water outlet 23 is arranged at the lower end of the pump 29, the pre-pump filter screen 30 is arranged on the support frame 24, a lifting ear 27 is arranged on the upper part of the support frame 24, a roller 28 is arranged on the lower part of the support frame 24, and four rollers 28 are arranged on the track 22; when the filter of the pre-pump filtration system is a pre-pump mesh filter, the difference is that the pump 29 in the filter screen of the pump-filter all-in-one 31 is arranged outside the filter screen, and is installed in the surface water together with the pre-pump mesh filter.

[0030] The system is installed as a whole on a movable trolley 33 , on which a lifting device 32 is installed.

[0031] The fixed connection in the present invention is bolt connection or welding; the transition connection is a rigid connection or a flexible connection, and the flexible connection is more adjustable; the connection pipeline and the transition connection can be changed according to the irrigation situation.

[0032] Specific implementation scheme one: When the irrigation water source is groundwater, the post-pump filtration system is started through the PLC control system in the water and fertilizer control cabinet 25. At this time, the first electric valve 10-1 is opened, the second electric valve 10-2 is closed, and the post-pump screen filter motor 7-1 starts to rotate. The motor drives the shaft 8-1 inside the post-pump screen filter 8 and the brush 8-2 ​​on the shaft to rotate together. The groundwater is pumped to the pipeline through the submersible pump. The pipeline is connected to the groundwater inlet quick connector 1-1. The irrigation water enters the first connecting pipeline 2-1, the water inlet pipeline 4-1, the centrifugal filter 4, the second connecting pipeline 2-2, the third connecting pipeline 2-3, the first transition connection 6-1, the post-pump screen filter 8, the outlet 8-4, the second transition connection 6-2, the connecting component 9, the first electric valve 10-1, the tee 16, and finally the irrigation water enters the field from the pipeline connected to the outlet quick connector 1-2 for irrigation.

[0033] When the pressure difference value formed by impurities inside the centrifugal filter 4 and the pre-pump mesh filter 8 reaches the set value, the PLC system in the water and fertilizer control cabinet 25 starts the sewage discharge system and opens the sewage valve. The sewage is discharged from the sewage pipe, the sewage valve and the pipeline connected to the sewage quick connector. When the pressure difference value returns to the set value, the sewage valve is closed and the post-pump filtration system enters normal operation.

[0034] The post-pump filtration system can also be a single centrifugal filter or a mesh filter or a laminated filter. The combination of the centrifugal filter and the mesh filter in the present invention is a preferred solution.

[0035] If fertilization is required for field irrigation, the fertilizer liquid system and fertilizer pump 21 are started through the PLC system in the water and fertilizer control cabinet 25. At this time, the first electric valve 10-1 is open, and the second electric valve 10-2 is closed. The irrigation water is pumped into the fertilizer tank 18 through the tee 16 and the fertilizer tank water inlet pipe connecting pipeline 17-2 connected to the fertilizer tank 18. When the water volume reaches the set value, fertilizer is added at the fertilizer adding port 19. At this time, the fertilizer tank motor 7-2 is started, and the motor drives the stirring shaft 18-1 and the stirring blade 18-2 to rotate, and the water and fertilizer are mixed until uniform. Then, the fertilizer pump 21 pumps the fertilizer liquid through the fertilizer pump connecting pipeline 17-3 to the pump pipe fertilizer liquid connecting pipeline 17-1, and the fertilizer liquid passes through the left end of the tee 16 along the connecting pipeline of the outlet quick connector 1-2 into the field for fertilization.

[0036] The fertilizer tank can be filled with solid fertilizer, liquid fertilizer, nutrients needed for crop growth, pesticides, etc.

[0037] Specific implementation scheme two: When the irrigation water is surface water and the filter of the pre-pump filtration system is the pump-filter integrated machine 31, the pump-filter integrated machine 31 slides along the track 22 to the outside of the mobile trolley 33, the lifting device 32 on the mobile trolley 33 is started, the lifting lug 27 on the support frame 24 of the pump-filter integrated machine 31 is hooked, the pump-filter integrated machine 31 is lifted and placed in the surface water pool, and then the pre-pump filtration system is started through the PLC control system in the water and fertilizer control cabinet 25. At this time, the first electric valve 10-1 is closed and the second electric valve 10-2 is opened. The surface water is pumped from the outside of the pre-pump filter mesh 30 to the inside of the pre-pump filter mesh 30 for filtration through the pump 29 inside the pump-filter integrated machine 31. The filtered irrigation water enters the fifth connecting pipe 2-5, the third transition connection 6-3, the fourth connecting pipe 2-4, the second electric valve 10-2, and the tee 16 in sequence along the pipe connected to the pre-pump filter outlet 23 and the surface water inlet quick connector 1-3. Finally, the irrigation water enters the field from the pipe connected to the outlet quick connector 1-2 for irrigation.

[0038] When the filter of the pre-pump filtration system is a pre-pump mesh filter, the difference is that the pump 29 in the filter screen of the pump-filter integrated machine 31 is set outside the filter screen and installed in the surface water together with the pre-pump mesh filter. The irrigation water is pumped from the surface water to the inside of the filter screen by the pump outside the pre-pump mesh filter for filtration. The filtered irrigation water enters the fifth connecting pipe 2-5, the third transition connection 6-3, the fourth connecting pipe 2-4, the second electric valve 10-2, and the tee 16 in sequence along the pipe connected to the surface water inlet quick connector 1-3 at the pre-pump filter outlet 23. Finally, the irrigation water enters the field from the pipe connected to the outlet quick connector 1-2 for irrigation.

[0039] After irrigation is completed, the lifting device 32 on the mobile trolley 33 is started again to lift the pre-pump filter and put it back into the track 22. The pre-pump filter slides back to the mobile trolley along the track 22, and the related components are put away.

[0040] If fertilization is required for field irrigation, the fertilizer liquid system and fertilizer pump 21 are started through the PLC system in the water and fertilizer control cabinet 25. At this time, the first electric valve is closed, and the second electric valve is opened. The irrigation water is pumped into the fertilizer tank 18 through the fertilizer tank water inlet pipe connecting pipeline 17-2 connected to the fertilizer tank 18 through the tee 16. When the water volume reaches the set value, fertilizer is added at the fertilizer adding port 19. At this time, the fertilizer tank motor 7-2 is started, and the motor drives the stirring shaft 18-1 and the stirring blade 18-2 to rotate, and the water and fertilizer are mixed until uniform. Then, the fertilizer pump 21 pumps the fertilizer liquid through the fertilizer pump connecting pipeline 17-3 to the pump pipe fertilizer liquid connecting pipeline 17-1, and the fertilizer liquid passes through the left end of the tee 16 along the connecting pipeline of the outlet quick connector 1-2 into the field for fertilization.

[0041] The fertilizer tank can be filled with solid fertilizer, liquid fertilizer, nutrients needed for crop growth, pesticides, etc.

[0042] To sum up, the beneficial effect is a mobile cart that carries a post-pump filtration system, a pre-pump filtration system, a fertilizer liquid system and a water-fertilizer control cabinet. The combination of the irrigation heads can be changed according to the surface water irrigation or groundwater irrigation conditions in the area, which greatly meets the needs of farmland irrigation and fertilization from different water sources, while reducing irrigation costs and operating costs.

[0043] The specific embodiments described in this article are merely examples of the present invention. The selection of terms used in this article is intended to best explain the implementation methods of each embodiment. Improvements can be made in response to changes in market irrigation conditions in combination with actual conditions. Technicians in the technical field to which the present invention belongs may make various modifications or supplements to the specific embodiments described, or replace them in a similar manner, or make equivalent substitutions for some of the technical features therein, all of which fall within the scope of protection of the present invention.

Claims

1. A multifunctional irrigation head system, including a post-pump filtration system, a pre-pump filtration system, a fertilizer liquid system and a water and fertilizer control cabinet, characterized in that: The post-pump filtration system includes a centrifugal filter and a post-pump mesh filter; the pre-pump filtration system mainly includes a pump-filter integrated machine or a pre-pump mesh filter; the fertilizer liquid system includes a fertilizer tank and a fertilizer pump, on which a fertilizer tank motor, a fertilizer adding port, a fertilizer tank water inlet pipe connecting pipeline and a fertilizer pump connecting pipeline are provided, the lower end of the fertilizer tank motor is connected to a stirring shaft, and a stirring blade is provided on the stirring shaft, one end of the fertilizer tank water inlet pipe connecting pipeline is connected to the right end of the tee, and the other end is connected to the fertilizer tank, one end of the fertilizer pump connecting pipeline is connected to the fertilizer tank, and the other end is connected to the fertilizer pump; the fertilizer pump is provided with a pump pipe fertilizer liquid connecting pipeline connected to the left end of the tee and a fertilizer pump connecting pipeline connected to the fertilizer tank; a PLC control system is provided inside the water and fertilizer control cabinet, and the water and fertilizer control cabinet is provided with a first connecting line connected to the fertilizer tank motor, a second connecting line connected to the post-pump mesh filter motor, and a third connecting line connected to the pre-pump filter motor.

2. A multifunctional irrigation head system according to claim 1, characterized in that: The post-pump filtration system is composed of a centrifugal filter and a post-pump mesh filter. One end of the groundwater inlet quick connector is connected to the groundwater pipe, and the other end of the groundwater inlet quick connector is connected to the first connecting pipe, and the other end of the first connecting pipe is connected to the centrifugal filter inlet pipe. A water inlet pressure gauge is provided on the centrifugal filter inlet pipe, and the various components are fixedly connected; the upper end of the centrifugal filter is connected to the second connecting pipe, and an exhaust valve is provided on the second connecting pipe; the other end of the second connecting pipe is connected to the third connecting pipe, and the other end of the third connecting pipe is connected to the first transition connection, and the other end of the first transition connection is connected to the water inlet of the post-pump mesh filter. The components are fixedly connected; a pump-rear mesh filter motor is provided on the pump-rear mesh filter, a shaft is connected to the lower end of the motor, and a brush is provided on the shaft; the other end of the water outlet of the pump-rear mesh filter is connected to the second transition connection, the other end of the second transition connection is connected to one end of the connecting component, a water outlet pressure gauge is provided on the connecting component, the other end of the connecting component is connected to one end of the first electric valve, the other end of the first electric valve is connected to the tee, the right end of the tee is connected to one end of the second electric valve, the other end of the second electric valve is connected to the fourth connecting pipe, the components after the fourth connecting pipe are the third transition connection, the fifth connecting pipe, and the surface water inlet quick connector in sequence, and the components are fixedly connected.

3. A multifunctional irrigation head system according to claim 2, characterized in that: A first sewage pipe is arranged at the bottom end of the centrifugal filter, a first sewage valve is arranged on the first sewage pipe, the end of the first sewage pipe is connected to a first sewage quick connector, and the components are fixedly connected.

4. A multifunctional irrigation head system according to claim 2, characterized in that: A second sewage pipe is arranged at the bottom end of the post-pump screen filter, a second sewage pipe is provided with a second sewage valve, the end of the second sewage pipe is connected to a second sewage quick connector, and the components are fixedly connected.

5. A multifunctional irrigation head system according to claim 1, characterized in that: When the filter of the pre-pump filter system is an integrated pump-filter machine, a pre-pump filter motor is arranged on the upper cover plate of the pre-pump filter, a pre-pump filter screen is arranged under the upper cover plate of the pre-pump filter, a pump is arranged at the center of the lower end of the inner part of the pre-pump filter screen, a water outlet is arranged at the lower end of the pump, the pre-pump filter screen is arranged on a support frame, a lifting ear is arranged on the upper part of the support frame, rollers are arranged on the lower part of the support frame, and four rollers are arranged on tracks.

6. A multifunctional irrigation head system according to claim 1, characterized in that: When the filter of the pre-pump filtration system is a pre-pump screen filter, the pre-pump screen filter sets the pump in the filter screen outside the filter screen and is installed in the surface water together with the pre-pump screen filter.

7. A multifunctional irrigation head system according to claims 1-6, characterized in that: The system is installed as a whole on a mobile trolley, and a lifting device is installed on the mobile trolley.

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