Water-saving type fertilizing and circulating irrigation system for greenhouse

Abstract

The utility model provides a water-saving type fertilization circulating irrigation system for a greenhouse, a greenhouse irrigation area comprises a plurality of greenhouse irrigation belts which are arranged in an array along the width direction, and each greenhouse irrigation belt is respectively surrounded by an annular irrigation water channel; the irrigation operation unit comprises an irrigation water pump and a negative pressure adsorption pump, the irrigation water pump is arranged on the front side of the greenhouse irrigation area in the length direction, the suction end of the irrigation water pump is connected with a water source, and the discharge end is connected with the front end of each annular irrigation water channel; the negative pressure adsorption pump is arranged on the rear side of the greenhouse irrigation area in the length direction, the suction end of the negative pressure adsorption pump is connected with the rear end of each annular irrigation water channel, and the discharge end of the negative pressure adsorption pump is selectively connected with the water source or the front end of each greenhouse irrigation belt through a backflow water pipe b. The fertilization operation unit comprises a fertilization tank and a fertilization driving pump, the fertilization tank is in conveying connection with the greenhouse irrigation belts, and the fertilization driving pump is configured to drive fertilizer in the fertilization tank to be conveyed into the greenhouse irrigation belts.

Description

TECHNICAL FIELD

[0001] The utility model relates to a system applied to agricultural greenhouse irrigation especially relates to a water -saving type fertilization cycle irrigation system of greenhouse, belongs to agricultural greenhouse irrigation technical field. BACKGROUND

[0002] In the greenhouse planting process, the grower can carry out the irrigation of crops through the small water pump, combines the aboveground ditch or plastic long pipe in the greenhouse, has obtained the popular application of large area.

[0003] At present, in the process of greenhouse irrigation, the water pump is generally set up outside the greenhouse irrigation area, the water discharged by the irrigation water pump flows naturally from one end to the other end of the greenhouse irrigation area, until there is water accumulation at the other end and maintains for a period of time, in this process, the water flows naturally, the external driving force is small, and it is easy to appear that the water storage is deeper near the irrigation water pump, and the water storage is shallower away from the irrigation water pump, the two ends of the whole greenhouse irrigation area are dry and wet, the water quantity control of different planting areas cannot be carried out, which is not conducive to the growth of crops, and the irrigation process is slow and the efficiency is low. In addition, the fertilization after irrigation is mostly artificial scattering fertilization, or the fertilizer is melted into the sprinkling can, and the sprinkling can is used for spraying, the process is time -consuming and the labor intensity is large, which is not suitable for large -area greenhouse planting. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a water -saving type fertilization cycle irrigation system of greenhouse to improve the irrigation speed in the greenhouse irrigation area, improve the uniformity of irrigation water and control the irrigation water quantity according to the need in the region, automatically carry out fertilization after irrigation, reduce the labor intensity, improve the irrigation and fertilization efficiency of large -area greenhouse irrigation area.

[0005] In order to achieve the above object, the utility model provides a water -saving type fertilization cycle irrigation system of greenhouse, which comprises a greenhouse irrigation area, an irrigation operation unit and a fertilization operation unit. The greenhouse irrigation area comprises a plurality of greenhouse irrigation belts arranged in an array along the width direction, and each greenhouse irrigation belt is surrounded by a ring-shaped irrigation water channel; the irrigation operation unit comprises an irrigation water pump and a negative pressure suction pump, the irrigation water pump is arranged at the front side of the length direction of the greenhouse irrigation area, the suction end is connected with the water source, and the discharge end is connected with the front end of each ring-shaped irrigation water channel; the negative pressure suction pump is arranged at the rear side of the length direction of the greenhouse irrigation area, the suction end is connected with the rear end of each ring-shaped irrigation water channel, and the discharge end is selectively connected with the water source or the front end of each greenhouse irrigation belt through a backflow pipe b; the fertilization operation unit comprises a fertilization tank and a fertilization driving pump, the fertilization tank is connected with each greenhouse irrigation belt for conveying, and the fertilization driving pump is configured to drive the fertilizer in the fertilization tank to be conveyed into each greenhouse irrigation belt.

[0006] Further, the front side of the greenhouse irrigation area is provided with a shunt total water tank extending along the width direction, the output end of the irrigation water pump is connected with the shunt total water tank through a connecting water pipe, and each greenhouse irrigation belt is connected with the shunt total water tank through a water distribution tank.

[0007] Further, the rear side of the greenhouse irrigation area is provided with a backflow total water tank extending along the width direction, each greenhouse irrigation belt is connected with the backflow total water tank through a backflow water pipe a, and the suction end of the negative pressure suction pump is connected with the backflow total water tank.

[0008] Further, the output end of the fertilizer tank is connected with the shunt total water tank, and the output end of the fertilizer tank is provided with a fertilizer valve for controlling the fertilizer output speed.

[0009] Further, the suction end of the fertilizer driving pump is connected with the backflow total water tank, and the output end is connected with the fertilizer tank, and the fertilizer driving pump is configured to drive the fertilizer in the fertilizer tank to be discharged from the output end by injecting water into the fertilizer tank.

[0010] Further, the output end of the negative pressure suction pump is connected with a backflow water pipe b, the backflow water pipe b is connected with a three-way reversing valve, one output end of the three-way reversing valve is connected with a water source, and the other output end is connected with the connecting water pipe through a backflow water pipe c.

[0011] Compared with the prior art, the irrigation water pump is used to flood irrigation in the greenhouse irrigation area, and the manual fertilizer throwing method is used after irrigation, and the beneficial effects of the utility model mainly lie in that:

[0012] 1. A plurality of greenhouse irrigation belts are arranged in an array in the greenhouse irrigation area, a ring-shaped irrigation water channel is arranged outside each greenhouse irrigation belt, the irrigation water pump is connected with one end of each ring-shaped irrigation water channel, the negative pressure suction pump is connected with the other end of each ring-shaped irrigation water channel, the irrigation water pump and the negative pressure suction pump realize irrigation at one end and negative pressure suction at the other end of the ring-shaped irrigation water channel, one is positive pumping, and the other is negative pressure pumping, the two forces are superimposed on each other, an equilibrium seepage area is formed in the greenhouse irrigation area, the irrigation efficiency is improved, and the energy-saving circulation irrigation is suitable for different planting areas and different planting crops in the greenhouse.

[0013] 2. The fertilizer driving pump sucks water at one end of the ring-shaped irrigation water channel into the fertilizer tank, drives the water flow in the fertilizer tank to the other end of the ring-shaped irrigation water channel, thereby continuously forming irrigation water with fertilizer uniformly flowing into the ring-shaped irrigation water channel, and automatically fertilizing in the greenhouse irrigation belt. This structure uses the original ring-shaped irrigation water channel for irrigation, reduces the labor intensity, improves the fertilizer efficiency, is simple to operate, and is suitable for use in large-area irrigation areas. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] Figure 1 is the overall structure schematic diagram of the provided greenhouse water-saving type fertilization and irrigation system;

[0016] Figure 2 is the seepage principle schematic diagram of the provided greenhouse water-saving type fertilization and irrigation system.

[0017] The drawing identification is explained as follows:

[0018] 1-water source, 2-irrigation water pump, 3-connection water pipe, 4-shunt total water tank, 5-water distribution tank, 6-greenhouse irrigation belt, 7-circular irrigation waterway, 8-backflow water pipe a, 9-backflow total water tank, 10-negative pressure suction pump, 11-backflow water pipe b, 12-backflow water pipe c, 13-three-way reversing valve, 14-fertilization valve, 15-fertilization tank, 16-fertilization driving pump.

[0019] It should be understood that the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] As Figure 1 and Figure 2As shown, the greenhouse water-saving type fertilization and irrigation system provided by the utility model, including big -arch shelter irrigation area, irrigation operation unit and fertilization operation unit. Big -arch shelter irrigation area includes along the width direction arrayed multiple big -arch shelter irrigation belts 6, each big -arch shelter irrigation belt 6 is respectively surrounded with annular irrigation water channel 7 outside;Irrigation operation unit includes irrigation water pump 2 and negative pressure adsorption pump 10, the irrigation water pump 2 is arranged at the length direction front side of big -arch shelter irrigation area, its suction end is connected with water source 1, and the discharge end is connected with the front end of each annular irrigation water channel 7;The negative pressure adsorption pump 10 is arranged at the length direction back side of big -arch shelter irrigation area, its suction end is connected with the back end of each annular irrigation water channel 7, and the discharge end is selectively connected with water source 1 or the front end of each big -arch shelter irrigation belt 6 through backflow water pipe b11.

[0022] The system is provided with two-direction irrigation seepage forces, one of which is positive pumping and the other is negative pressure pumping, and the two forces are superimposed on each other to form a complete seepage area in the greenhouse irrigation area. The system realizes bidirectional seepage and ensures the irrigation efficiency of the fertilization and irrigation system. It is especially suitable for energy-saving and cyclic fertilization irrigation of different crops in different planting areas in the greenhouse.

[0023] In the implementation process, the front side of the greenhouse irrigation area is provided with a shunt total water tank 4 extending along the width direction, the output end of the irrigation water pump 2 is connected with the shunt total water tank 4 through a connecting water pipe 3, and each big -arch shelter irrigation belt 6 is connected with the shunt total water tank 4 through a water distribution tank 5. In the implementation process, the back side of the greenhouse irrigation area is provided with a backflow total water tank 9 extending along the width direction, each big -arch shelter irrigation belt 6 is connected with the backflow total water tank 9 through a backflow water pipe a8, and the suction end of the negative pressure adsorption pump 10 is connected with the backflow total water tank 9. The annular irrigation water channel 7 is provided with a seepage hole, and the seepage hole is arranged opposite to the big -arch shelter irrigation belt 6.

[0024] In the implementation process, the provided greenhouse water-saving type fertilization and irrigation system is connected with the water pump 2 through the water inlet pipe, the water pump 2 pumps the water source 1 into the shunt total water tank 4 through the connecting water pipe 3, the greenhouse irrigation area is divided into independent and parallel big -arch shelter irrigation belts 6, the periphery of each big -arch shelter irrigation belt 6 is paved with an annular irrigation water channel 7, the shunt total water tank 4 is communicated with the annular irrigation water channel 7 through the water distribution tank 5. The radius of the annular irrigation water channel 7 is smaller than the radius of the water distribution tank 5, and the pressure from the water pump 2 to the big -arch shelter irrigation belt 6 is positive pressure. The negative pressure adsorption pump 10 is communicated with each parallel backflow water pipe a8 through the backflow total water tank 9, each parallel backflow water pipe a8 is communicated with each annular irrigation water channel 7, the pipeline between the negative pressure adsorption pump 10, the backflow total water tank 9, the backflow water pipe a8 and the annular irrigation water channel 7 is under negative pressure, the backflow total water tank 9 is communicated with the three-way reversing valve 13 through the backflow water pipe b11, one channel of the three-way reversing valve 13 is a return port, the other two channels are connected with the water source 1 and the backflow water pipe c12 respectively, and the backflow water pipe c12 is connected with the connecting water pipe 3.

[0025] Based on the above embodiment, by arraying multiple greenhouse irrigation belts in the greenhouse irrigation area, respectively setting annular irrigation waterways outside each greenhouse irrigation belt, connecting the irrigation water pump with one end of each annular irrigation waterway, connecting the negative pressure suction pump with the other end of each annular irrigation waterway, the irrigation water pump and the negative pressure suction pump realize one end irrigation and the other end negative pressure suction of the greenhouse irrigation area, one is positive pumping and the other is negative pressure pumping, the two forces are superimposed on each other, forming a complete seepage area in the greenhouse irrigation area, improving the irrigation efficiency, and being suitable for energy-saving and cyclic fertilization irrigation in different planting areas and different crops in the greenhouse.

[0026] The fertilization operation unit includes a fertilization tank 15 and a fertilization driving pump 16, the fertilization tank 15 is connected with each of the greenhouse irrigation belts 6 for conveying, and the fertilization driving pump 16 is configured to drive the fertilizer in the fertilization tank 15 to be conveyed into each of the greenhouse irrigation belts 6. In the preferred embodiment, the output end of the fertilization tank 15 is connected with the shunt total water tank 4, and the output end of the fertilization tank 15 is provided with a fertilization valve 14 for controlling the output speed of the fertilizer. The suction end of the fertilization driving pump 16 is connected with the return total water tank 9, and the output end is connected with the fertilization tank 15, which is configured to inject water into the fertilization tank 15 to drive the fertilizer inside to be discharged from the output end. The output end of the negative pressure suction pump 10 is connected with a return water pipe b11, the return water pipe b11 is connected with a three-way reversing valve 13, one output end of the three-way reversing valve 13 is connected with the water source 1, and the other output end is connected with the connecting water pipe 3 through a return water pipe c12. The connecting water pipe 3, the annular irrigation waterway 7, the return water pipe a8, the return water pipe b11 and the return water pipe c12 are all plastic pipes. The fertilization tank 15 is provided with two, and the output end of each of the fertilization tanks 15 is connected with different ends of the shunt total water tank 4, and each of the fertilization tanks is provided with an independent fertilization driving pump 16.

[0027] Based on the above embodiment, by the fertilization driving pump sucking the water at one end of the annular irrigation waterway into the fertilization tank, driving the water flow in the fertilization tank to the other end of the annular irrigation waterway, forming the irrigation water with uniform fertilizer flowing into the greenhouse irrigation belt, automatic fertilization is realized in the greenhouse irrigation belt, the labor intensity is reduced, and the fertilization efficiency is improved.

[0028] Each annular irrigation water channel 7 is connected with a fertilization valve 14 and a fertilization tank 15. The fertilization tank 15 is placed with basic nutrient solution required by each greenhouse irrigation belt 6, which is general solution. The connecting water pipe 3 selects 36mm pipe radius PVC pipe, the annular irrigation water channel 7 selects 18mm pipe radius PVC pipe, the backflow water pipe a 8 selects 36mm pipe radius PVC pipe, the backflow water pipe b 11 selects 36mm pipe radius PVC pipe. The backflow water pipe c 12 selects 16mm pipe radius PVC pipe. Compared with general water pump irrigation, the system can complete directional irrigation and fertilization, and ensure irrigation efficiency, and save water source. Irrigation and fertilization is a relatively closed system, which ensures effective use of water source through cooperation of different pipe radii; when fertilization, open the three-way reversing valve to connect the backflow water pipe c and the backflow water pipe b, prevent the nutrient solution from entering the water source to pollute the water source. The structure is simple, suitable for the case of block planting in the greenhouse, and each block irrigation belt can independently complete irrigation and fertilization.

[0029] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water-saving type of fertigation and irrigation system for a greenhouse, characterized in that, The utility model relates to a kind of greenhouses, including: Greenhouse irrigation area, including multiple greenhouse irrigation belts (6) arranged in array along the width direction, each greenhouse irrigation belt (6) is respectively surrounded with annular irrigation waterway (7) outside; Irrigation operation unit, including irrigation water pump (2) and negative pressure suction pump (10), the irrigation water pump (2) is set in the length direction front side of greenhouse irrigation area, its suction end is connected with water source (1), and the front end of each annular irrigation waterway (7) is connected with the discharge end;The negative pressure suction pump (10) is set in the length direction rear side of greenhouse irrigation area, and its suction end is connected with the rear end of each annular irrigation waterway (7), and the discharge end is connected with water source (1) or the front end of each greenhouse irrigation belt (6) by backflow pipe b (11);And Fertilization operation unit, including fertilizer tank (15) and fertilizer driving pump (16), the fertilizer tank (15) is connected with each greenhouse irrigation belt (6) and is transported, and the fertilizer driving pump (16) is configured to drive fertilizer in fertilizer tank (15) to be transported into each greenhouse irrigation belt (6).

2. The water-saving type fertilization and irrigation system for a greenhouse according to claim 1, wherein The front side of the greenhouse irrigation area is provided with a shunt main water tank (4) extending along the width direction, and the output end of the irrigation water pump (2) is connected with the shunt main water tank (4) through a connecting water pipe (3). Each greenhouse irrigation belt (6) is connected with the shunt main water tank (4) through a water distribution tank (5).

3. The water-saving type fertilization and irrigation system for a greenhouse according to claim 1, characterized in that, The rear side of the greenhouse irrigation area is provided with a backflow main water tank (9) extending along the width direction, and each greenhouse irrigation belt (6) is connected with the backflow main water tank (9) through a backflow pipe a (8). The suction end of the negative pressure suction pump (10) is connected with the backflow main water tank (9).

4. The water-saving type fertilizing and circulating irrigation system for a greenhouse according to claim 1, characterized in that, The annular irrigation waterway (7) has seepage holes, and the seepage holes are arranged opposite to the greenhouse irrigation belt (6).

5. The water-saving type fertilizing and circulating irrigation system for a greenhouse according to claim 1, characterized in that, The output end of the fertilizer tank (15) is connected with the shunt main water tank (4), and the output end of the fertilizer tank (15) is provided with a fertilizer valve (14) for controlling the output speed of the fertilizer.

6. The water-saving type fertilization and irrigation system for a greenhouse according to claim 5, wherein The suction end of the fertilizer driving pump (16) is connected with the backflow main water tank (9), and the output end is connected with the fertilizer tank (15). It is configured to inject water into the fertilizer tank (15) to drive the fertilizer in the fertilizer tank (15) to be discharged from the output end.

7. The water-saving type fertilization and irrigation system for a greenhouse according to claim 6, characterized in that, The output end of the negative pressure suction pump (10) is connected with a backflow pipe b (11), the backflow pipe b (11) is connected with a three-way reversing valve (13), one output end of the three-way reversing valve (13) is connected with the water source (1), and the other output end is connected with the connecting water pipe (3) through a backflow pipe c (12).

8. The water-saving type fertilizing and circulating irrigation system for a greenhouse according to claim 6, characterized in that, The fertilizer tank (15) is provided with two, and the output end of each fertilizer tank (15) is connected with different ends of the shunt main water tank (4). Each fertilizer tank is provided with an independent fertilizer driving pump (16).

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