Precision irrigation system for trench testing

Abstract

The application discloses a kind of precision irrigation systems of test pit test, including multiple array set up main frame, the four corners of the main frame are equipped with the support mechanism of being able to lift, the top of the main frame is equipped with multiple cross bars, the bottom of the cross bar is equipped with rubber hose, the circumference of the rubber hose is equipped with downwardly extending spray head, one side of the main frame is equipped with mixing pipe, the rubber hose is communicated with mixing pipe at interface, water injection pipe and water and fertilizer pipe are equipped on the mixing pipe, water and fertilizer are mixed and sprayed at spray head through rubber hose;The precision irrigation system of test pit test can water and fertilizer irrigation simultaneously, can guarantee the water and nutrients required by crops, greatly improve resource utilization efficiency, effectively protect soil during irrigation, improve irrigation effect and quality, meet test pit test irrigation precision.

Description

Technical Field

[0001] This invention relates to the field of crop irrigation technology, and in particular to a precision irrigation system for pit testing. Background Technology

[0002] Farmland pit data plays a crucial role in agricultural modernization, particularly in water-saving irrigation research. This data is collected in real-time and accurately through an automated data acquisition and management system, supporting researchers in conducting in-depth analysis of farmland soil conditions.

[0003] Reasonable water and fertilizer resources can effectively guarantee crop growth. Utility model patent CN209861852U discloses a water-deficient irrigation test pit irrigation device, which includes a horizontally parallel water distribution pipe, a branch pipe connected to the water distribution pipe, and a water supply pipe connected to the branch pipe. Multiple drainage holes are provided on the side of the water distribution pipe closest to the ground, all of which are located on the same horizontal plane and are evenly distributed. The branch pipe is located at one end of the water distribution pipe, and the water supply pipe is equipped with a water metering device. This solves the technical problem of the inability to measure irrigation water volume.

[0004] However, the above-mentioned test pit irrigation device cannot achieve simultaneous water and fertilizer irrigation, and cannot guarantee the moisture and nutrients of crops. In addition, its irrigation method is singular, which easily washes away the soil, and the irrigation height of the pipe cannot be adjusted. Overall, the test accuracy is poor, and the use effect is not ideal. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a precision irrigation system for pit testing that can simultaneously irrigate with water and fertilizer, ensuring the water and nutrients required by crops, greatly improving resource utilization efficiency, effectively protecting the soil during irrigation, improving irrigation effect and quality, and meeting the irrigation accuracy requirements of pit testing.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a precision irrigation system for pit testing, comprising multiple arrayed main frames, with lifting support mechanisms at the four corners of the main frames, multiple crossbars above the main frames, rubber hoses at the bottom of the crossbars, and downward-extending nozzles on the circumference of the rubber hoses. A mixing pipe is provided on one side of the main frames, and the rubber hoses are connected to the mixing pipes at the interface. The mixing pipes are provided with water injection pipes and water-fertilizer pipes, and the water and fertilizer are mixed and sprayed out through the rubber hoses at the nozzles.

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

[0008] Preferably, both ends of the crossbar are provided with elastic telescopic sleeves, the end of the crossbar is provided with a cavity, a spring is arranged in the cavity, one end of the spring is fixed in the cavity, and the other end is fixed in the telescopic sleeve, the outer side of the telescopic sleeve is provided with an extension rod, the two telescopic sleeves are respectively sleeved on the two ends of the crossbar, the overall length of the crossbar is adjusted through the two telescopic sleeves, and the outer wall of the telescopic sleeve is abutted against the inner wall of the main frame through the spring after the crossbar is installed.

[0009] Preferably, a transverse tray is arranged in the mixing pipe, the connection position of 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 the side close to the water and fertilizer pipe.

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

[0011] Preferably, the spray head comprises a connecting pipe and an extension pipe, the connecting pipe and the extension pipe are integrally cast, the outer circumference of the connecting pipe is provided with external threads, the connecting pipe is connected with the rubber hose through the external threads, the bottom of the extension pipe is provided with a water outlet, the circumference of the extension pipe is provided with a frame, and the frame is provided with a blocking mechanism for blocking the extension pipe.

[0012] Preferably, the blocking mechanism comprises a vertical fixed cylinder, the fixed cylinder is coaxially arranged with the extension pipe, the fixed cylinder is provided with a telescopic rod and a compression spring, one end of the telescopic rod is inserted into the compression spring and fixed on the frame in the fixed cylinder, the other end of the telescopic rod is vertically upwardly extended and fixedly connected with a lifting disc, the center of the lifting disc is provided with a hemispherical hemisphere, the port of the extension pipe is blocked by the hemisphere in a normal state, and the water pressure pushes the lifting disc and the hemisphere to retract downward during irrigation.

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

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

[0015] Preferably, the support mechanism comprises a lower fixing base, a built-in motor is arranged in the fixing base, an output end of the built-in motor is coaxially fixedly connected with a rotating sleeve, a screw rod is arranged in the rotating sleeve, a top of the screw rod is fixedly connected with a main frame, and the rotating sleeve is rotated by the built-in motor to realize lifting of the screw rod.

[0016] The application discloses a precision irrigation system for a test pit, which comprises a plurality of arrayed main frames, support mechanisms capable of lifting are arranged at four corners of the main frames, a plurality of cross bars are arranged above the main frames, rubber hoses are arranged at bottoms of the cross bars, downward extending spray heads are arranged at peripheries of the rubber hoses, a mixing pipe is arranged on one side of the main frame, the rubber hoses are communicated with the mixing pipe at joints, water injection pipes and water and fertilizer pipes are arranged on the mixing pipe, and water and fertilizer are sprayed out at the spray heads through the rubber hoses after mixing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the precision irrigation system for the test pit.

[0018] Figure 2 It is a structure schematic view of the main frame in the precision irrigation system for the test pit. Figure One .

[0019] Figure 3 It is a structure schematic view of the main frame in the precision irrigation system for the test pit. Figure Two .

[0020] Figure 4 It is a structure schematic view of the cross bar in the precision irrigation system for the test pit.

[0021] Figure 5 It is a structure schematic view of the mixing pipe in the precision irrigation system for the test pit. Figure One .

[0022] Figure 6 It is a structure schematic view of the mixing pipe in the precision irrigation system for the test pit. Figure Two .

[0023] Figure 7 It is a structure schematic view of the spray head in the precision irrigation system for the test pit. Figure One .

[0024] Figure 8 The structure diagram of the spray head in the precision irrigation system for the test pit experiment of the application Figure Two .

[0025] Figure 9 The connection diagram of the extension pipe and the lifting pipe in the precision irrigation system for the test pit experiment of the application.

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

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

[0028] Please refer to Figures 1-9 , the precision irrigation system for the test pit experiment, comprising a plurality of arrayed main frames 1, that is, the main frames 1 can be arranged longitudinally or transversely, so that the test pits correspond one by one to the main frames 1, wherein the main frames 1 are erected on the test pits for irrigation experiments, the four corners of the main frames 1 are provided with liftable support mechanisms 5, the support mechanisms 5 can adjust the overall height of the main frames 1, the upper part of the main frames 1 is provided with a plurality of crossbars 2, the bottom of the crossbars 2 is provided with rubber hoses 3, the circumference of the rubber hoses 3 is provided with downwardly extending spray heads 31, one side of the main frames 1 is provided with a mixing pipe 4, the rubber hoses 3 are communicated with the mixing pipe 4 at the interface 43, the mixing pipe 4 is provided with a water injection pipe 41 and a water and fertilizer pipe 42, and the water and fertilizer mixture is sprayed out at the spray heads 31 through the rubber hoses 3.

[0029] In use, each horizontal rod 2 is arranged between two rows of crops, which can avoid water flow from washing soil during irrigation test, so that crops can be irrigated; in use, tap water is injected into the water injection pipe 41, and water and fertilizer solution is injected into the water and fertilizer pipe 42, the water and fertilizer solution and tap water are mixed in the mixing pipe 4, then enter the rubber hose 3, and then are sprayed out through the spray head 31, so that the crops on both sides are irrigated, and uniformity of irrigation is ensured; because water and fertilizer are irrigated at the same time, the required water and nutrients of crops can be ensured, resource utilization efficiency is greatly improved, soil is effectively protected, and irrigation effect and quality are improved, and the irrigation device is convenient to use.

[0030] In the embodiment, the inner wall of the main frame 1 is provided with mounting grooves 11, the horizontal rod 2 is detachably arranged between two mounting grooves 11, and the rubber hose 3 is fixed to the bottom of the horizontal rod 2 through the cable tie 22.

[0031] Specifically, the two ends of the horizontal rod 2 are provided with elastic telescopic sleeves 21, the end of the horizontal rod 2 is provided with a cavity 23, the cavity 23 is provided with a spring 24, one end of the spring 24 is fixed in the cavity 23, and the other end of the spring 24 is fixed in the telescopic sleeve 21, the outer side of the telescopic sleeve 21 is provided with an extension rod 25, the two telescopic sleeves 21 are always sleeved on the two ends of the horizontal rod 2, the overall length of the horizontal rod 2 is adjusted through the two telescopic sleeves 21, and after the horizontal rod 2 is arranged, the outer wall of the telescopic sleeve 21 abuts against the inner wall of the main frame 1 through the spring 24.

[0032] Because the horizontal rod 2 is arranged according to the row of crops, when the row of crops increases or decreases, the horizontal rod (the rubber hose 3) also needs to increase or decrease, so that the quality and effectiveness of irrigation are ensured; when the horizontal rod 2 is arranged or increased, the worker first squeezes the telescopic sleeve 21 towards each other, at this time, the spring 24 is compressed, and the overall length of the horizontal rod 2 will be shortened, then the horizontal rod 2 is arranged in the main frame 1, the extension rod 25 corresponds to the mounting groove 11, then the telescopic sleeve 21 is loosened, the spring 24 is stretched, at this time, the spring 24 pushes the telescopic sleeve 21, so that the extension rod 25 enters the mounting groove 11, at this time, the outer wall of the telescopic sleeve 21 abuts against the inner wall of the main frame 1, and the two are extruded to be attached, so that the stability of the horizontal rod 2 is ensured; the distance between the two adjacent horizontal rods 2 is directly adjusted.

[0033] Similarly, when the horizontal rod 2 needs to be detached or the number of the horizontal rod 2 needs to be reduced, the telescopic sleeve 21 is again squeezed towards each other; after the telescopic sleeve 21 is squeezed, the overall length of the horizontal rod 2 is shortened, and the horizontal rod can be directly taken out.

[0034] In the embodiment, the rubber hose 3 also increases or decreases when the horizontal rod 2 increases or decreases, so that the row irrigation uniformity is ensured.

[0035] In the scheme, in order to ensure that tap water and water and fertilizer solution are uniformly mixed, a transverse tray 44 is arranged in the mixing pipe 4, the connection of the water injection pipe 41 and the water and 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 the side close to the water and fertilizer pipe 42, the water and fertilizer (tap water and water and fertilizer solution) after mixing enters the mixing pipe 4 through the opening 45 and finally flows into the rubber hose 3 through the interface, wherein the flow ratio of the water injection pipe 41 to the water and fertilizer pipe 42 is 4:1.

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

[0037] In the scheme, the spray head 31 includes a connecting pipe 311 and an extension pipe 312, the connecting pipe 311 and the extension pipe 312 are integrally poured and arranged, the outer circumference of the connecting pipe 311 is provided with external threads, the connecting pipe 311 is connected with the rubber hose 3 through the external threads, the bottom of the extension pipe 312 is provided with a water outlet, the circumference of the extension pipe 312 is provided with a frame 313, and the frame 313 is provided with a blocking mechanism for blocking the extension pipe 312.

[0038] In irrigation use, the blocking mechanism is separated from the extension pipe 312, and after irrigation is completed, the blocking mechanism blocks the port of the extension pipe 312, so that external soil or impurities and the like are prevented from entering the pipe.

[0039] Specifically, the blocking mechanism includes a vertical fixed cylinder 314, the fixed cylinder 314 is coaxially arranged with the extension pipe 312, the fixed cylinder 314 is provided with a telescopic rod 3142 and a compression spring 3143, one end of the telescopic rod 3142 is inserted into the compression spring 3143 and is fixed on the frame 313 in the fixed cylinder 314, the other end is vertically upwardly extended and is fixedly connected with a lifting disc 315, the center of the lifting disc 315 is provided with a hemispherical hemisphere 316, the port of the extension pipe 312 is blocked by the hemisphere 316 in normal state, water pressure pushes the lifting disc 315 and the hemisphere 316 to retract downwardly during irrigation, the circumference of the fixed cylinder 314 is provided with a locking screw rod 3141 for abutting against the telescopic rod 3142, and the outer diameter of the hemisphere 316 is greater than the inner diameter of the extension pipe 312.

[0040] In normal state, the port of the extension pipe 312 is blocked by the hemisphere 316, at this time, the extension pipe 312 is isolated inside and outside, which can prevent foreign matter from entering; when irrigation is used, the water pressure will push the lifting disc 315 and the hemisphere 316, so that the whole body is retracted downward by the compression spring 3143, at this time, the hemisphere 316 is not in contact with the extension pipe 312, so as to ensure that the water flows out.

[0041] In addition, since the hemisphere 316 and the lifting disc 315 are arranged directly below the extension pipe 312, the water flow can also be ensured to directly hit the hemisphere 316 and the lifting disc 315 at this time, and the water flow will be circumferentially diffused, so as to ensure the uniformity of irrigation.

[0042] Further, the circumference of the extension pipe 312 is provided with a first spraying hole 3121, the inside of the extension pipe 312 is provided with a lifting pipe 3122 which can move up and down, the bottom end of the lifting pipe 3122 is provided with an inward flange 3124, wherein the establishment of the flange 3124 can make the hemisphere 316 better push the lifting pipe 3122, the circumference of the lifting pipe 3122 is provided with a second spraying hole 3123, the first spraying hole 3121 and the second spraying hole 3123 are misaligned when the hemisphere 316 is not in contact with the extension pipe 312, and the lifting pipe 3122 moves upward when the hemisphere 316 blocks the extension pipe 312, so that the first spraying hole 3121 and the second spraying hole 3123 are coincident.

[0043] That is, the spray head 31 has two irrigation use modes, one is directly flowing out through the extension pipe 312, and the other is sprayed outward through the coincident first spraying hole 3121 and the second spraying hole 3123.

[0044] When the first mode is directly flowing out through the extension pipe 312, the lifting pipe 3122 moves downward by a certain length to leak out the end surface of the extension pipe 312, at this time, the first spraying hole 3121 and the second spraying hole 3123 are misaligned, which can ensure that the water flow directly hits the hemisphere 316 and the lifting disc 315, and the water flow is circumferentially diffused to meet the irrigation; when the second mode is sprayed outward through the coincident first spraying hole 3121 and the second spraying hole 3123, first, the locking screw 3141 is rotated, 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 telescoped, but only can block the extension pipe 312 by the hemisphere 316, at this time, due to the blocking of the hemisphere 316, the lifting pipe 3122 will move upward, after moving, the first spraying hole 3121 and the second spraying hole 3123 are coincident, and the liquid mixed by water and fertilizer will be sprayed outward from the first spraying hole 3121 and the second spraying hole 3123, so as to realize spraying; the second spraying hole is numerous and has a small diameter, which can realize atomization effect and provide a static irrigation spraying mode.

[0045] Based on the above embodiment, a valve group can also be arranged on the spray head 31, the valve group comprising solenoid valves, flow valves, etc., each spray head can be independently controlled and irrigation flow can be detected, further improving test accuracy.

[0046] In the scheme of the present application, the support mechanism 5 comprises a lower fixing base 51, a built-in motor is arranged in the fixing base 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 fixing base 51, a screw rod 53 is arranged in the rotating sleeve 52, the top of the screw rod 53 is fixedly connected with the main frame 1, and the rotating sleeve 52 is lifted and lowered by the screw rod 53 when the rotating sleeve 52 rotates by the built-in motor.

[0047] In the scheme of the present application, the support mechanism 5 comprises a lower fixing base 51, a built-in motor is arranged in the fixing base 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 fixing base 51, a screw rod 53 is arranged in the rotating sleeve 52, the top of the screw rod 53 is fixedly connected with the main frame 1, and the rotating sleeve 52 is lifted and lowered by the screw rod 53 when the rotating sleeve 52 rotates by the built-in motor.

[0048] In addition, the main frames 1 on all the test pits can be uniformly lifted and lowered, or can be independently lifted and lowered, so that irrigation tests can be performed on each test pit, and the test effect and accuracy are ensured.

[0049] Obviously, the above embodiment is only an example for clearly illustrating the present application, and is not a limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhaustively listed. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A precision irrigation system for pit testing, characterized in that, The system includes a main frame consisting of multiple arrays. The four corners of the main frame are equipped with lifting support mechanisms. The top of the main frame is equipped with multiple crossbars. The bottom of the crossbars is equipped with rubber hoses. The circumference of the rubber hoses is equipped with downward-extending nozzles. A mixing pipe is provided on one side of the main frame. The rubber hoses are connected to the mixing pipes at the interface. The mixing pipes are equipped with water injection pipes and water-fertilizer pipes. After the water and fertilizer are mixed, they are sprayed out through the rubber hoses at the nozzles. The nozzle includes a connecting pipe and an extension pipe, which are integrally cast. The outer circumference of the connecting pipe is provided with an external thread, and the connecting pipe is connected to a rubber hose through the external thread. The bottom of the extension pipe is provided with a water outlet, and the circumference of the extension pipe is provided with a frame. The frame is provided with a sealing mechanism for sealing the extension pipe. The sealing mechanism includes a vertically erected fixed cylinder, which is coaxially erected with the extension pipe. The fixed cylinder contains a telescopic rod and a compression spring. One end of the telescopic rod is inserted into the compression spring and fixed to the frame inside the fixed cylinder, while the other end extends vertically upward and is fixedly connected to the lifting plate. The lifting plate has a hemispherical hemisphere at its center. Under normal conditions, the port of the extension pipe is blocked by the hemisphere. During irrigation, the water pressure pushes the lifting plate and the hemisphere downward and retracts them. The circumference of the fixed cylinder is provided with a locking screw for abutting the telescopic rod. The outer diameter of the hemisphere is larger than the inner diameter of the extension tube; The extension tube has a first spray hole around its circumference. Inside the extension tube is a lifting tube that can move up and down. The bottom end of the lifting tube has an inward flange. The circumference of the lifting tube has a second spray hole. When the hemisphere is not in contact with the extension tube, the first spray hole and the second spray hole are misaligned. When the hemisphere blocks the extension tube, the lifting tube moves upward so that the first spray hole and the second spray hole coincide.

2. The precision irrigation system for pit testing according to claim 1, characterized in that, The inner wall of the main frame is provided with mounting grooves, the crossbar is detachably installed between two mounting grooves, and the rubber hose is fixed to the bottom of the crossbar by cable ties.

3. The precision irrigation system for pit testing according to claim 2, characterized in that, The crossbar has elastic telescopic sleeves at both ends, and a cavity at the end of the crossbar. A spring is installed in the cavity, with one end of the spring fixed in the cavity and the other end fixed in the telescopic sleeve. An extension rod is provided on the outside of the telescopic sleeve. Two telescopic sleeves are respectively fitted onto the two ends of the crossbar. The overall length of the crossbar is adjusted by the two telescopic sleeves. After the crossbar is installed, the outer wall of the telescopic sleeve is pressed against the inner wall of the main frame by the spring. The crossbar can be increased or decreased within the main frame by the telescopic sleeves.

4. The precision irrigation system for pit testing according to claim 1, characterized in that, The mixing pipe is equipped with a horizontally placed tray. The connection between the water injection pipe and the water-fertilizer pipe is located directly above the tray. The tray has an opening on the side near the water-fertilizer pipe. After the water and fertilizer are mixed, they enter the mixing pipe through the opening and finally flow into the rubber hose through the interface.

5. The precision irrigation system for pit testing according to claim 4, characterized in that, The flow rate ratio of the water injection pipe to the water fertilizer pipe is 4:

1.

6. The precision irrigation system for pit testing according to claim 1, characterized in that, The support mechanism includes a fixed base at the bottom, a built-in motor is provided in the fixed base, the output end of the built-in motor is coaxially fixedly connected to the rotating sleeve, the rotating sleeve is provided with a screw, 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.

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