Precise irrigation system for measuring pit test

Abstract

The invention discloses a measuring pit test precise irrigation system which comprises a plurality of main frames arranged in an array mode, supporting mechanisms capable of ascending and descending are arranged at the four corners of each main frame, a plurality of transverse rods are arranged above the main frames, rubber hoses are arranged at the bottoms of the transverse rods, nozzles extending downwards are arranged on the circumferences of the rubber hoses, and the nozzles are arranged on the main frames. A mixing pipe is arranged on one side of the main frame, the rubber hose is communicated with the mixing pipe at the connector, a water injection pipe and a water and fertilizer pipe are arranged on the mixing pipe, and water and fertilizer are sprayed out at the nozzle through the rubber hose after being mixed; according to the accurate irrigation system for the pit test, water and fertilizer can be irrigated at the same time, water and nutrients needed by crops can be guaranteed, the resource utilization efficiency can be greatly improved, soil is effectively protected during irrigation, the irrigation effect and quality are improved, and the irrigation accuracy of the pit test is met.

Description

Technical Field

[0001] The invention relates to the technical field of crop irrigation, and in particular to a precision irrigation system for a pit test. Background Art

[0002] Farmland pit data plays a key role in the process of agricultural modernization, especially in water-saving irrigation research. These pit irrigation data are collected in real time and accurately through an automated collection and management system, supporting researchers to conduct in-depth analysis of farmland soil conditions.

[0003] Reasonable water and fertilizer resources can provide effective protection for the growth of crops. The utility model with announcement number CN209861852U discloses a water-deficit irrigation test pit irrigation device, which includes horizontally parallel water distribution pipes, water distribution pipes connected to the water distribution pipes, and water supply pipes connected to the water distribution pipes; a plurality of leakage holes are arranged on the side of the water distribution pipe close to the ground, and all the leakage holes are located in the same horizontal plane and are evenly distributed; the water distribution pipe is located at one end of the water distribution pipe, and the water supply pipe is provided with a water metering device; the technical problem that the irrigation water volume cannot be measured is solved.

[0004] However, the above-mentioned pit watering device cannot achieve water and fertilizer irrigation at the same time when in use, and cannot guarantee the moisture and nutrients of crops. In addition, its irrigation method is single, which is easy to erode the soil, and the irrigation height of the pipe cannot be adjusted. The overall test accuracy is poor and the use effect is not ideal. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a pit test precision irrigation system that can irrigate with water and fertilizer at the same time, which can not only ensure the water and nutrients required by crops, but also greatly improve the resource utilization efficiency, effectively protect the soil during irrigation, improve the irrigation effect and quality, and meet the pit test irrigation accuracy.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a precision irrigation system for a test pit, comprising a plurality of main frames arranged in an array, wherein four corners of the main frames are provided with support mechanisms that can be raised and lowered, a plurality of cross bars are provided above the main frames, a rubber hose is provided at the bottom of the cross bars, a nozzle extending downward is provided on the circumference of the rubber hose, a mixing tube is provided on one side of the main frame, the rubber hose is connected to the mixing tube at an interface, a water injection tube and a water and fertilizer tube are provided on the mixing tube, and the water and fertilizer are mixed and sprayed out at the nozzle through the rubber hose.

[0007] Preferably, the inner wall of the main frame is provided with a mounting groove, the cross bar is detachably mounted between two mounting grooves, and the rubber hose is fixed to the bottom of the cross bar by a cable tie.

[0008] Preferably, elastic telescopic sleeves are provided at both ends of the cross bar, a cavity is provided at the end of the cross bar, a spring is provided in the cavity, one end of the spring is fixed in the cavity, and the other end is fixed in the telescopic sleeve, an extension rod is provided on the outside of the telescopic sleeve, the two telescopic sleeves are respectively sleeved on the two ends of the cross bar, the overall length of the cross bar is adjusted by the two telescopic sleeves, after the cross bar is installed, the outer wall of the telescopic sleeve is pressed against the inner wall of the main frame through the spring, and the cross bar is increased or decreased in the main frame through the telescopic sleeve.

[0009] Preferably, a horizontal tray is provided in the mixing tube, the connection between the water injection pipe and the water and fertilizer pipe is located directly above the tray, and the tray is provided with an opening on one side close to the water and fertilizer pipe. After the water and fertilizer are mixed, they enter the mixing tube through the opening and finally flow into the rubber hose through the interface.

[0010] Preferably, the flow ratio between the water injection pipe and the water and fertilizer pipe is 4:1.

[0011] Preferably, the nozzle includes a connecting pipe and an extension pipe, the connecting pipe and the extension pipe are cast as one piece, the outer circumference of the connecting pipe is provided with an external thread, the connecting pipe is connected to a rubber hose via the external thread, a water outlet is provided at the bottom of the extension pipe, the circumference of the extension pipe is provided with a frame, and a sealing mechanism for sealing the extension pipe is provided inside the frame.

[0012] Preferably, the blocking mechanism includes a vertically erected fixed cylinder, which is coaxially erected with the extension tube, and a telescopic rod and a compression spring are provided in the fixed cylinder, one end of the telescopic rod is inserted into the compression spring and fixed to the frame in the fixed cylinder, and the other end extends vertically upward and is fixedly connected to the lifting plate, a hemispherical hemisphere is at the center of the lifting plate, and the port of the extension tube is blocked by the hemisphere under normal conditions, and the water pressure pushes the lifting plate and the hemisphere to retract downward during irrigation, and a locking screw for abutting the telescopic rod is provided on the circumference of the fixed cylinder.

[0013] Preferably, the outer diameter of the hemisphere is greater than the inner diameter of the extension tube.

[0014] Preferably, a first spray hole is provided on the circumference of the extension tube, a lifting tube capable of moving up and down is provided inside the extension tube, an inward flange is provided at the bottom end of the lifting tube, a second spray hole is provided on the circumference of the lifting tube, the first spray hole and the second spray hole are staggered when the hemisphere is not in contact with the extension tube, and when the hemisphere blocks the extension tube, the lifting tube moves upward to make the first spray hole overlap with the second spray hole.

[0015] Preferably, the supporting mechanism includes a fixing seat below, a built-in motor is provided in the fixing seat, the output end of the built-in motor is coaxially fixedly connected to the rotating sleeve, a screw is provided in the rotating sleeve, the top of the screw is fixedly connected to the main frame, and the rotating sleeve is raised and lowered by the screw when the built-in motor rotates.

[0016] The invention discloses a precision irrigation system for a test pit, comprising a plurality of main frames set up in an array, wherein four corners of the main frames are provided with support mechanisms capable of being raised and lowered, a plurality of cross bars are provided above the main frames, a rubber hose is provided at the bottom of the cross bars, a nozzle extending downward is provided on the circumference of the rubber hose, a mixing tube is provided on one side of the main frame, the rubber hose is connected with the mixing tube at an interface, a water injection tube and a water-fertilizer tube are provided on the mixing tube, and the water and fertilizer are mixed and sprayed out at the nozzle through the rubber hose; compared with the prior art, the precision irrigation system for the test pit can irrigate with water and fertilizer at the same time, which can not only ensure the water and nutrients required by crops, but also greatly improve the resource utilization efficiency, and effectively protect the soil during irrigation, improve the irrigation effect and quality, and meet the beneficial effect of the precision of the test pit irrigation; in addition, if the fertilizer is a water-soluble fertilizer during use, the fertilization can be evenly applied, and if it is a solid waste, it will not be washed away during irrigation to cause uneven fertilizer, and the soil and crops can be protected to avoid washing away. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the precision irrigation system for pit testing of the present invention.

[0018] Figure 2 The main frame structure of the precision irrigation system for pit testing of the present invention is shown in FIG. Figure 1 .

[0019] Figure 3 The main frame structure of the precision irrigation system for pit testing of the present invention is shown in FIG. Figure 2 .

[0020] Figure 4 It is a schematic diagram of the structure of the cross bar in the precision irrigation system for pit testing of the present invention.

[0021] Figure 5 The structure of the mixing tube in the precision irrigation system of the pit test of the present invention is schematically shown. Figure 1 .

[0022] Figure 6 The structure of the mixing tube in the precision irrigation system of the pit test of the present invention is schematically shown. Figure 2 .

[0023] Figure 7 The structure of the sprinkler in the precision irrigation system for the pit test of the present invention is schematically shown. Figure 1 .

[0024] Figure 8 The structure of the sprinkler in the precision irrigation system for the pit test of the present invention is schematically shown. Figure 2 .

[0025] Fig. 9 It is a schematic diagram of the connection between the extension pipe and the lifting pipe in the precision irrigation system for the pit test of the present invention.

[0026] In the figure: 1. main frame; 11. mounting slot; 2. cross bar; 21. telescopic sleeve; 22. cable tie; 23. cavity; 24. spring; 25. extension rod; 3. rubber hose; 31. nozzle; 311. connecting pipe; 312. extension pipe; 3121. first spray hole; 3122. lifting pipe; 3123. second spray hole; 3124. flange; 313. frame; 314. fixing cylinder; 3141. locking screw; 3142. telescopic rod; 3143. compression spring; 315. lifting plate; 316. hemisphere; 4. mixing tube; 41. water injection pipe; 42. water and fertilizer pipe; 43. interface; 44. tray; 45. opening; 5. supporting mechanism; 51. fixing seat; 52. rotating sleeve; 53. screw. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0028] Please refer to Figure 1-9 The measuring pit test precision irrigation system includes a plurality of main frames 1 set up in an array, that is, the main frames 1 can be arranged longitudinally or transversely so that the measuring pits correspond to the main frames 1 one by one, wherein the main frame 1 is erected on the measuring pit for irrigation test, and a lifting support mechanism 5 is provided at the four corners of the main frame 1, and the support mechanism 5 can adjust the overall height of the main frame 1, and a plurality of cross bars 2 are provided above the main frame 1, and a rubber hose 3 is provided at the bottom of the cross bar 2, and a nozzle 31 extending downward is provided on the circumference of the rubber hose 3, and a mixing tube 4 is provided on one side of the main frame 1, and the rubber hose 3 is connected to the mixing tube 4 at the interface 43, and a water injection pipe 41 and a water and fertilizer pipe 42 are provided on the mixing tube 4, and the water and fertilizer are mixed and sprayed out at the nozzle 31 through the rubber hose 3.

[0029] When in use, each cross bar 2 is arranged between two rows of crops, which can prevent water from eroding the soil during irrigation tests, so that all crops can be irrigated; when in use, tap water is injected into the water injection pipe 41, and a solution of water and fertilizer is injected into the water-fertilizer pipe 42. The water-fertilizer solution and tap water are mixed in the mixing pipe 4 and then enter the rubber hose 3, and then are sprayed out through the nozzle 31, so as to irrigate the crops on both sides and ensure irrigation uniformity; since water and fertilizer are irrigated at the same time, the moisture and nutrients required by crops can be guaranteed, which greatly improves the efficiency of resource utilization, not only effectively protects the soil, but also improves the irrigation effect and quality, and is convenient to use.

[0030] In this embodiment, the inner wall of the main frame 1 is provided with a mounting groove 11 , the cross bar 2 is detachably mounted between two mounting grooves 11 , and the rubber hose 3 is fixed to the bottom of the cross bar 2 by a cable tie 22 .

[0031] Specifically, elastic telescopic sleeves 21 are provided at both ends of the cross bar 2, a cavity 23 is provided at the end of the cross bar 2, a spring 24 is provided in the cavity 23, one end of the spring 24 is fixed in the cavity 23, and the other end is fixed in the telescopic sleeve 21, an extension rod 25 is provided on the outside of the telescopic sleeve 21, and the two telescopic sleeves 21 are always respectively sleeved on the two ends of the cross bar 2, and the overall length of the cross bar 2 is adjusted by the two telescopic sleeves 21. After the cross bar 2 is installed, the outer wall of the telescopic sleeve 21 is pressed against the inner wall of the main frame 1 through the spring 24, and the cross bar 2 is increased or decreased in the main frame 1 through the telescopic sleeve 21.

[0032] Since the cross bar 2 is set up according to the rows of crops, when the rows of crops increase or decrease, the cross bar (rubber hose 3) also needs to be increased or decreased accordingly, so as to ensure the quality and effectiveness of irrigation; when installing or adding the cross bar 2, the staff first squeezes the telescopic sleeve 21 towards each other, at which time the spring 24 is compressed, and the overall length of the cross bar 2 will be shortened, and then the cross bar 2 is placed as a whole into the main frame 1, so that the extension rod 25 corresponds to the installation groove 11, and then the telescopic sleeve 21 is loosened to extend the spring 24. At this time, the spring 24 will push the telescopic sleeve 21 to make the extension rod 25 enter the installation groove 11. At this time, the outer wall of the telescopic sleeve 21 is against the inner wall of the main frame 1, and the extrusion fit between the two ensures the stability of the cross bar 2; the distance between two adjacent cross bars 2 can be directly adjusted by pulling.

[0033] Similarly, when the number of the crossbars 2 needs to be removed or reduced, the telescopic sleeve 21 is squeezed toward each other again; after squeezing, the overall length of the crossbar 2 is shortened, and the crossbar can be directly removed.

[0034] In this embodiment, when the crossbars 2 are increased or decreased, the rubber hoses 3 are also increased or decreased accordingly to ensure uniform irrigation of the rows.

[0035] In the scheme of the present invention, in order to ensure that tap water and water-fertilizer solution are evenly mixed, a horizontal tray 44 is provided in the mixing tube 4, and the connection between the water injection pipe 41 and the water-fertilizer pipe 42 is located directly above the tray 44. One end of the tray 44 is sealed, and the other end is provided with an opening 45 on a side close to the water-fertilizer pipe 42. After the water-fertilizer (tap water and water-fertilizer solution) are mixed, they enter the mixing tube 4 through the opening 45 and finally flow into the rubber hose 3 through the interface, wherein the flow ratio of the water injection pipe 41 to the water-fertilizer pipe 42 is 4:1.

[0036] Since the water-fertilizer pipe 42 is close to the opening 45, when the tap water and the water-fertilizer solution are injected into the mixing pipe 4, the water-fertilizer solution flowing out of the water-fertilizer pipe 42 will flow into the tap water discharged from the water injection pipe 41, and the two will mix with the flow of water, and finally enter the pipe at the opening 45, thereby ensuring that the tap water and the water-fertilizer solution are mixed evenly, thereby ensuring the moisture and nutrients required for the growth of crops.

[0037] In the solution of the present invention, the nozzle 31 includes a connecting pipe 311 and an extension pipe 312, and the connecting pipe 311 and the extension pipe 312 are cast as one piece. The outer circumference of the connecting pipe 311 is provided with an external thread, and the connecting pipe 311 is connected to the rubber hose 3 through the external thread. A water outlet is provided at the bottom of the extension pipe 312, and a frame 313 is provided on the circumference of the extension pipe 312. A sealing mechanism for sealing the extension pipe 312 is provided inside the frame 313.

[0038] When used for irrigation, the blocking mechanism is separated from the extension tube 312. After the irrigation is completed, the blocking mechanism blocks the end of the extension tube 312 to prevent external soil or impurities from entering the tube.

[0039] Specifically, the blocking mechanism includes a vertically established fixed cylinder 314, which is coaxially established with the extension tube 312. A telescopic rod 3142 and a compression spring 3143 are provided in the fixed cylinder 314. One end of the telescopic rod 3142 is inserted into the compression spring 3143 and fixed to the frame 313 in the fixed cylinder 314, and the other end extends vertically upward and is fixedly connected to the lifting disk 315. A hemispherical hemispherical body 316 is provided at the center of the lifting disk 315. Under normal circumstances, the port of the extension tube 312 is blocked by the hemispherical body 316. During irrigation, the water pressure pushes the lifting disk 315 and the hemispherical body 316 to retract downward. A locking screw 3141 for abutting the telescopic rod 3142 is provided on the circumference of the fixed cylinder 314, and the outer diameter of the hemispherical body 316 is larger than the inner diameter of the extension tube 312.

[0040] Under normal circumstances, the port of the extension tube 312 is blocked by the hemispherical body 316. At this time, the extension tube 312 is isolated from the inside and outside, and can prevent foreign objects from entering. When used for irrigation, the water pressure will push the lifting plate 315 and the hemispherical body 316, so that the whole is retracted downward through the compression spring 3143. At this time, the hemispherical body 316 is not in contact with the extension tube 312, thereby ensuring the outflow of water.

[0041] In addition, since the hemispherical body 316 and the lifting plate 315 are arranged directly below the extension tube 312, it is also possible to ensure that the water flow directly hits the hemispherical body 316 and the lifting plate 315. At this time, the water flow will diffuse circumferentially to ensure the uniformity of irrigation.

[0042] Furthermore, a first spray hole 3121 is provided on the circumference of the extension tube 312, a lifting tube 3122 capable of moving up and down is provided inside the extension tube 312, an inward flange 3124 is provided at the bottom end of the lifting tube 3122, wherein the establishment of the flange 3124 enables the hemisphere 316 to better push the lifting tube 3122, a second spray hole 3123 is provided on the circumference of the lifting tube 3122, the first spray hole 3121 and the second spray hole 3123 are staggered when the hemisphere 316 is not in contact with the extension tube 312, and when the hemisphere 316 blocks the extension tube 312, the lifting tube 3122 moves upward to make the first spray hole 3121 overlap with the second spray hole 3123.

[0043] That is to say, the sprinkler head 31 has two irrigation usage modes, one is to directly flow out through the extension tube 312 , and the other is to spray out through the overlapping first sprinkler hole 3121 and the second sprinkler hole 3123 .

[0044] When the first type flows out directly through the extension tube 312, the lifting tube 3122 moves downward by a certain length to leak out of the end surface of the extension tube 312. At this time, the first spray hole 3121 and the second spray hole 3123 are misaligned, which can ensure that the water flow directly hits the hemisphere 316 and the lifting plate 315. At this time, the water flow diffuses circumferentially to meet the irrigation needs; when the second type sprays outward through the overlapping first spray hole 3121 and the second spray hole 3123, first turn the locking screw 3141, and the locking screw 3141 extends into the fixed cylinder 314 and abuts against The circumference of the telescopic rod 3142, at this time the telescopic rod 3142 cannot be elastically extended and retracted, and the extension tube 312 can only be blocked by the hemisphere 316. At this time, due to the blocking of the hemisphere 316, the lifting tube 3122 will move upward, and after the movement, the first spray hole 3121 and the second spray hole 3123 will coincide, and the liquid mixed with water and fertilizer will be sprayed from the first spray hole 3121 and the second spray hole 3123 to the surroundings to achieve spraying; the second type of spray holes are numerous and have a small aperture, which can achieve atomization and provide a stationary irrigation spraying method.

[0045] Based on the above embodiment, a valve group may be further provided on the sprinkler head 31. The valve group includes a solenoid valve, a flow valve, etc., which can independently control each sprinkler head and detect the irrigation flow, thereby further improving the test accuracy.

[0046] In the solution of the present invention, the support mechanism 5 includes a fixed seat 51 below, a built-in motor is provided in the fixed seat 51, the output end of the built-in motor is coaxially fixedly connected with a rotating sleeve 52, the rotating sleeve 52 is arranged in the fixed seat 51, a screw 53 is provided in the rotating sleeve 52, the top of the screw 53 is fixedly connected to the main frame 1, and the rotating sleeve 52 is lifted and lowered by the screw 53 when the built-in motor rotates.

[0047] Among them, at least three built-in motors are arranged in the four fixing seats 51 . In this embodiment, the built-in motors are stepping motors and run synchronously, so as to ensure the overall lifting and lowering of the main frame 1 .

[0048] In addition, the main frames 1 on all the test pits can be raised and lowered uniformly or independently to ensure that each test pit can achieve the irrigation test and ensure the test effect and accuracy.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. The pit test precision irrigation system is characterized by: It includes a main frame set up in a plurality of arrays, wherein four corners of the main frame are provided with support mechanisms that can be raised and lowered, a plurality of cross bars are provided on the top of the main frame, a rubber hose is provided at the bottom of the cross bar, a nozzle extending downward is provided on the circumference of the rubber hose, a mixing tube is provided on one side of the main frame, the rubber hose is connected with the mixing tube at the interface, a water injection tube and a water and fertilizer tube are provided on the mixing tube, and the water and fertilizer are mixed and sprayed out at the nozzle through the rubber hose.

2. The pit test precision irrigation system according to claim 1, characterized in that: The inner wall of the main frame is provided with a mounting groove, the cross bar is detachably mounted between two mounting grooves, and the rubber hose is fixed to the bottom of the cross bar by a cable tie.

3. The pit test precision irrigation system according to claim 2, characterized in that: Elastic telescopic sleeves are provided at both ends of the cross bar, a cavity is provided at the end of the cross bar, a spring is provided in the cavity, one end of the spring is fixed in the cavity, and the other end is fixed in the telescopic sleeve, an extension rod is provided on the outside of the telescopic sleeve, the two telescopic sleeves are respectively sleeved on the two ends of the cross bar, and the overall length of the cross bar is adjusted by the two telescopic sleeves. After the cross bar is installed, the outer wall of the telescopic sleeve is pressed against the inner wall of the main frame through the spring, and the cross bar is increased or decreased in the main frame through the telescopic sleeve.

4. The pit test precision irrigation system according to claim 1, characterized in that: A horizontal tray is provided in the mixing tube, the connection between the water injection pipe and the water and fertilizer pipe is located directly above the tray, and an opening is provided on the tray on one side close to the water and fertilizer pipe. After the water and fertilizer are mixed, they enter the mixing tube through the opening and finally flow into the rubber hose through the interface.

5. The pit test precision irrigation system according to claim 4, characterized in that: The flow ratio between the water injection pipe and the water and fertilizer pipe is 4:

1.

6. The pit test precision irrigation system according to claim 1, characterized in that: The nozzle includes a connecting pipe and an extension pipe, which are cast as one piece. The outer circumference of the connecting pipe is provided with an external thread. The connecting pipe is connected to a rubber hose via the external thread. A water outlet is provided at the bottom of the extension pipe. The circumference of the extension pipe is provided with a frame, and a sealing mechanism for sealing the extension pipe is provided inside the frame.

7. The pit test precision irrigation system according to claim 6, characterized in that: The blocking mechanism includes a vertically set up fixed cylinder, which is coaxially set up with the extension tube. A telescopic rod and a compression spring are arranged in the fixed cylinder. One end of the telescopic rod is inserted into the compression spring and fixed on the frame in the fixed cylinder, and the other end extends vertically upward and is fixedly connected to the lifting plate. A hemispherical hemisphere is located at the center of the lifting plate. Under normal circumstances, the port of the extension tube is blocked by the hemisphere. During irrigation, the water pressure pushes the lifting plate and the hemisphere to retract downward. A locking screw for abutting the telescopic rod is arranged on the circumference of the fixed cylinder.

8. The pit test precision irrigation system according to claim 7, characterized in that: The outer diameter of the hemisphere is greater than the inner diameter of the extension tube.

9. The pit test precision irrigation system according to claim 8, characterized in that: A first spray hole is provided on the circumference of the extension tube, a lifting tube capable of moving up and down is provided inside the extension tube, an inward flange is provided at the bottom end of the lifting tube, a second spray hole is provided on the circumference of the lifting tube, the first spray hole and the second spray hole are staggered when the hemisphere is not in contact with the extension tube, and when the hemisphere blocks the extension tube, the lifting tube moves upward to make the first spray hole overlap with the second spray hole.

10. The pit test precision irrigation system according to claim 1, characterized in that: The support mechanism includes a fixing seat at the bottom, a built-in motor is arranged in the fixing seat, an output end of the built-in motor is coaxially fixedly connected with a rotating sleeve, a screw is arranged in the rotating sleeve, a top of the screw is fixedly connected with a main frame, and the rotating sleeve is lifted and lowered by the screw when the built-in motor rotates.

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