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 utility model belongs to the field of agricultural water-saving irrigation, in particular to a multifunctional irrigation head system. Background Art

[0002] Agricultural water-saving irrigation is a systematic project. The process from water supply to crop output must go through multiple links. The primary issue 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 required for crop growth, etc., can also improve the utilization rate of irrigation headers. This puts forward innovative requirements for the rationality, economy, and profit maximization of the header of the irrigation project in the water-saving irrigation system. The utility model has developed a multifunctional irrigation header system. The system can not only meet the irrigation needs of small plots and small flow areas, but also meet the different irrigation needs of different farmers through collective procurement and operation by rural cooperatives. It solves the problem that it is not cost-effective for a single farmer to use a multifunctional irrigation header system, and also greatly improves the utilization rate of a multifunctional irrigation header system. Summary of the Invention

[0003] To solve the above problems, the utility model provides a multifunctional irrigation head system that provides an effective combination of a pre-pump filtration system and a post-pump filtration system, a fertilizer liquid system, and a water and fertilizer control cabinet. It can solve the problems of irrigation, fertilization, different nutrients required for crop growth, and pest control of surface water and groundwater according to local conditions.

[0004] The technical solutions of the utility model for solving the above problems are as follows:

[0005] The post-pump filtration system, pre-pump filtration system, fertilizer liquid system and water-fertilizer control cabinet are installed on a mobile cart at the same time. The pre-pump filtration system + fertilizer liquid system + water-fertilizer control cabinet is suitable for surface water irrigation; the post-pump filtration system + fertilizer liquid system + water-fertilizer control cabinet is 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 and 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 inlet, a fertilizer tank water inlet connecting pipe, and a fertilizer pump connecting pipe. The lower end of the fertilizer tank motor is connected to a stirring shaft, and the stirring shaft is provided with a stirring blade. One end of the fertilizer tank water inlet connecting pipe is connected to the fertilizer tank motor. 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 provided inside the water and fertilizer control cabinet. 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 rear screen filter motor of the pump, and a third connecting line connected to the front filter motor of the pump.

[0007] The post-pump filtration system consists 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 various 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. The exhaust valve can effectively discharge the gas in the pipe, which 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-back screen filter, and the various components are fixedly connected; the pump-back screen filter is provided with a pump-back screen 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-back screen 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 a 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. 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 various components are fixedly connected.

[0009] The bottom end of the centrifugal filter is provided with a first sewage pipe, the first sewage pipe is provided with a first sewage valve, the end of the first sewage pipe is connected to the first sewage quick connector, and the various components are fixedly connected.

[0010] A second drain pipe is provided at the bottom end of the post-pump screen filter, a second drain valve is provided on the second drain pipe, the end of the second drain pipe is connected to the second drain 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 the preferred solution.

[0012] When the filter of the pre-pump filtration 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 the support frame, a lifting lug is arranged on the upper part of the support frame, a roller is arranged at the lower part of the support frame, and four rollers are arranged on the track; when the filter of the pre-pump filtration 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 the 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 utility model is a bolt connection or welding; the transition connection is a rigid connection or a flexible connection, and the flexible connection is more adjustable; the connection pipe and the transition connection can be changed according to the design of the irrigation situation.

[0015] Beneficial effects: A mobile cart 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, greatly meeting the needs of farmland irrigation, fertilization, and nutrients in the crop growth process from different water sources, while reducing irrigation 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 can be made according to actual application conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of an embodiment of the present utility model.

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

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

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

[0021] Figure 5 This is a schematic diagram of the installation of the mobile trolley.

[0022] In order to make the diagram clear, the traditional left and right views are 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 a water 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 a water 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 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 tee, 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] This multifunctional irrigation system combines a post-pump filtration system, a pre-pump filtration system, a fertilizer system, and a water and fertilizer control cabinet, all mounted on a mobile cart. These systems are combined to suit local conditions. The post-pump filtration system, fertilizer system, and water and fertilizer control cabinet combination is suitable for groundwater irrigation, while the pre-pump filtration system, fertilizer system, and water and fertilizer control cabinet are suitable for surface water irrigation.

[0025] A multifunctional irrigation head system includes a post-pump filtration system, a pre-pump filtration system, a fertilizer liquid system, and a water and 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 addition port 19, a fertilizer tank water inlet pipe connecting pipe 17-2 and a fertilizer pump connecting pipe 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 pipe 17-2 is connected to a three-way pipe. 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 screen 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 pipe, and the other end of the groundwater inlet quick connector 1-1 is connected to the first connecting pipe 2-1, and the other end of the first connecting pipe 2-1 is connected to the centrifugal filter inlet pipe 4-1, and the centrifugal filter inlet pipe 4-1 is provided with a water inlet pressure gauge 3-1, and the various components are fixedly connected; the upper end of the centrifugal filter 4 is connected to the second connecting pipe 2-2, and the second connecting pipe 2-2 is provided with an exhaust valve 5; 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 pipe 2-2 is connected to the third connecting pipe 2-3, the other end of the third connecting pipe 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; the post-pump screen filter 8 is provided with a post-pump screen filter motor 7-1, the lower end of the motor is connected to a shaft 8-1, and a brush 8-2 is provided on the shaft; the other end of the post-pump screen filter water outlet 8-4 is connected to the second transition connection 6-2, the other end of the second transition connection 6-2 is connected to one end of the connecting component 9, the connecting component 9 is provided with a water outlet pressure gauge 3-2, the other end of the connecting component 9 is connected to one end of the first electric valve 10-1, the other end of the first electric valve 10-1 is connected to the tee 16, the right end of the tee 16 is connected to one end of the second electric valve 10-2, 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 drain pipe 14-1 is provided at the bottom end of the centrifugal filter 4. A first drain valve 13-1 is provided on the first drain pipe 14-1. The end of the first drain pipe 14-1 is connected to a first drain quick connector 15-1. The connections between the components are fixed.

[0028] A second drain pipe 14-2 is provided at the bottom end of the post-pump screen filter 8. A second drain valve 13-2 is provided on the second drain pipe 14-2. The end of the second drain pipe 14-2 is connected to a second drain quick connector 15-2. The connections between the components are fixed.

[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 provided on the upper cover plate 26 of the pre-pump filter, a pre-pump filter screen 30 is provided under the upper cover plate 26 of the pre-pump filter, a pump 29 is provided at the center of the lower end of the inner part of the pre-pump filter screen 30, a pre-pump filter water outlet 23 is provided at the lower end of the pump 29, the pre-pump filter screen 30 is provided on the support frame 24, a lifting ear 27 is provided on the upper part of the support frame 24, a roller 28 is provided on the lower part of the support frame 24, and four rollers 28 are provided 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 provided 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 utility model is a bolt connection or welding; the transition connection is a rigid connection or a flexible connection, and the flexible connection is more adjustable; the connection pipe and the transition connection can be changed according to the design of the irrigation situation.

[0032] Specific implementation plan 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 into 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 pipe 2-1, the water inlet pipe 4-1, the centrifugal filter 4, the second connecting pipe 2-2, the third connecting pipe 2-3, the first transition connection 6-1, the post-pump screen filter 8, the water 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 screen filter 8 reaches the set value, the PLC system in the water and fertilizer control cabinet 25 starts the sewage system and opens the sewage valve. The sewage is discharged from the sewage pipe, the sewage valve and 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, a mesh filter, or a laminated filter. The combination of the centrifugal filter and the mesh filter in the present invention is the preferred solution.

[0035] When fertilization is required for field irrigation, the fertilizer liquid system and fertilizer pump 21 are activated 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. Irrigation water is pumped into the fertilizer tank 18 through the fertilizer tank inlet connecting pipe 17-2, which is connected to the fertilizer tank 18 through the tee 16. When the water volume reaches the set value, fertilizer is added at the fertilizer addition port 19. At this time, the fertilizer tank motor 7-2 is started, which drives the stirring shaft 18-1 and stirring blades 18-2 to rotate, mixing the water and fertilizer until uniform. The fertilizer pump 21 then pumps the fertilizer liquid through the fertilizer pump connecting pipe 17-3 to the pump pipe fertilizer liquid connecting pipe 17-1. The fertilizer liquid passes through the left end of the tee 16 and the connecting pipe 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 plan 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 all-in-one 31. The filtered irrigation water flows along the pipe connecting the pre-pump filter outlet 23 and the surface water inlet quick connector 1-3 into 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. Finally, the irrigation water enters the field from the pipe connected to the outlet quick connector 1-2 for irrigation.

[0038] When the filter in the pre-pump filtration system is a pre-pump screen filter, the difference is that the pump 29 within the filter screen of the pump-filter integrated unit 31 is located outside the filter screen and installed together with the pre-pump screen filter in the surface water. Irrigation water is pumped from the surface water into the filter screen by the pump outside the pre-pump screen filter. The filtered irrigation water then flows along the pipeline connecting the pre-pump filter outlet 23 to the surface water inlet quick connector 1-3, into the fifth connecting pipeline 2-5, the third transition connection 6-3, the fourth connecting pipeline 2-4, the second electric valve 10-2, and the tee 16. Finally, the irrigation water enters the field through the pipeline 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 relevant components are put away.

[0040] When fertilization is required for field irrigation, the fertilizer liquid system and fertilizer pump 21 are activated 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 open. Irrigation water is pumped into the fertilizer tank 18 through the fertilizer tank inlet connecting pipe 17-2 connected to the fertilizer tank 18 via 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, which drives the stirring shaft 18-1 and stirring blades 18-2 to rotate, mixing the water and fertilizer until uniform. The fertilizer pump 21 then pumps the fertilizer liquid through the fertilizer pump connecting pipe 17-3 to the pump pipe fertilizer liquid connecting pipe 17-1. The fertilizer liquid passes through the left end of the tee 16 and the connecting pipe 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 with 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 based on actual conditions. Technicians in the technical field to which the present invention belongs may make various modifications or additions to the described specific embodiments or replace them in a similar manner, or make equivalent replacements for some of the technical features therein, which all 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 by: The post-pump filtration system includes a centrifugal filter and a post-pump screen filter; the pre-pump filtration system mainly includes a pump-filter integrated machine or a pre-pump screen filter; the fertilizer liquid system includes a fertilizer tank and a fertilizer pump. The fertilizer tank is provided with a fertilizer tank motor, a fertilizer adding port, a fertilizer tank water inlet pipe connecting pipe and a fertilizer pump connecting pipe. The lower end of the fertilizer tank motor is connected to a stirring shaft, and the stirring shaft is provided with a stirring blade. One end of the fertilizer tank water inlet pipe connecting pipe 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 pipe 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 pipe connected to the left end of the tee and a fertilizer pump connecting pipe 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 screen 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. 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. 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, 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.

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

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

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

6. The 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 any one of claims 1 to 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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