Fertilizer and water integrated agricultural drip irrigation device under plastic film mulching condition

Abstract

The invention relates to the technical field of drip irrigation under plastic film, in particular to a fertilizer and water integrated agricultural drip irrigation device under the plastic film mulching condition, which comprises a base, the upper end of the base is fixedly provided with a mixing barrel and a water pump in sequence from front to back, and the water inlet end of the water pump is communicated with the bottom end of the mixing barrel through a water pipe; the water inlet end of the water pump communicates with a main pipe through a water pipe. For different distances among multiple ridges on different lands, matching can be achieved by adjusting the front and back positions of the branch pipes, it is ensured that the branch pipes can be accurately laid on the ridges, holes do not need to be formed outside the main pipe, operation is convenient, and damage to the main pipe is avoided. The branch pipe can be quickly and simply disassembled and assembled on the main pipe, that is, quick separation and quick connection between the branch pipe and the main pipe can be realized, the round pipe can be automatically blocked by separation so as to avoid water loss, water can quickly flow into the branch pipe after connection so as to realize quick dripping of the drip irrigation head, the sealing performance can also be ensured, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of sub-film drip irrigation, in particular to a fertilizer-water integrated agricultural drip irrigation device under film-covered conditions. Background Art

[0002] Sub-mulch drip irrigation is a highly efficient, water-saving agricultural cultivation model that combines mulch covering, drip irrigation, and fertilization techniques. It's widely used in arid and semi-arid regions, as well as in water-scarce farmland, achieving multiple benefits, including water and fertilizer savings and increased yields. Existing sub-mulch drip irrigation systems primarily consist of a main pipe and multiple branch pipes. These branch pipes are connected to the main pipe via corresponding connectors. The branch pipes are laid beneath the mulch and on the ridges. The main pipe is connected to an external water supply system, distributing water to the branch pipes. Multiple drip irrigation heads are attached to the branch pipes, discharging the water in a drip irrigation manner.

[0003] However, the existing sub-film fertilizer and water drip irrigation device still has the following shortcomings:

[0004] 1. In different planting environments, the spacing between multiple ridges on the land also varies and is not fixed. The staff needs to open multiple holes on the main pipe according to the spacing between the multiple ridges. The spacing between the multiple holes should be matched with the spacing between the multiple ridges as much as possible to ensure that the branch pipes can be accurately laid on the ridges. Then, the joints are installed at the holes to connect with the branch pipes. The splicing method is generally threaded connection. This is not only cumbersome to operate, but also may require re-operation when drip irrigation is carried out on ridges in other planting environments, which can easily damage the main pipe.

[0005] 2. If one of the branch pipes fails and the drip irrigation operation cannot be carried out normally, it is not only necessary to disassemble the branch pipe in a tedious manner (because the threaded connection splicing method requires continuous rotation of the branch pipe), but also necessary to promptly use a plugging device to block the opening on the main pipe left after the branch pipe is disassembled to prevent a large amount of water from being lost. Finally, after the inspection is completed, the branch pipe needs to be tediously installed back, which is inconvenient. Summary of the Invention

[0006] The purpose of the present invention is to provide a fertilizer-water integrated agricultural drip irrigation device under film-covered conditions to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fertilizer-water integrated agricultural drip irrigation device under mulching conditions, comprising a base, a mixing barrel and a water pump being fixedly mounted on the upper end of the base in order from front to back, the water inlet of the water pump being connected to the bottom end of the mixing barrel via a water pipe, and the water inlet of the water pump being connected to a main pipe via a water pipe, and drip irrigation mechanisms being provided on both sides of the outer wall of the main pipe;

[0008] The drip irrigation mechanism includes a square shell, which is installed on the outside of the main pipe through a sliding mechanism. A corrugated telescopic hose is connected between the upper end of the square shell and the outer wall of the main pipe, and a sealing mechanism is provided inside the square shell. A round pipe is connected to the side wall of the square shell away from the main pipe. An end of the round pipe away from the square shell is plugged with a plug-in pipe through a sealing mechanism. An end of the plug-in pipe away from the round pipe is connected to a branch pipe. A locking mechanism is provided between the plug-in pipe, the round pipe and the square shell, and a pushing assembly is provided inside the plug-in pipe. A plurality of drip irrigation heads are fixedly installed on the outer wall of the branch pipe.

[0009] Preferably, the sliding mechanism includes a connecting rod and a knob screw, the connecting rod is fixedly connected to the side of the outer wall of the main pipe, and the upper and lower ends of the connecting rod are provided with sliding grooves, the groove walls of the two sliding grooves are slidably fitted with sliders, and the ends of the two sliders away from each other are commonly fixedly connected with a concave block, the concave block is slidably fitted on the outer wall of the connecting rod, and the side wall of the concave block away from the slider is fixedly connected to the side wall of the square shell away from the circular tube, the knob screw is sequentially passed through from top to bottom and tightened in the concave block and the inner wall of the slider located above, and the lower end of the knob screw is tightly fitted with the groove wall of the sliding groove located above.

[0010] Preferably, the sealing mechanism includes a fixed plate, which is fixedly connected to the inner bottom end of the square shell, and a guide column is slidably inserted into the side wall of the fixed plate, and a conical rubber plug is fixedly connected to the end of the guide column close to the circular tube, and a spring 2 is fixedly connected between the conical rubber plug and the fixed plate, and the spring 2 is slidably sleeved on the outer wall of the guide column, and the conical rubber plug is close to the end of the circular tube away from the plug-in tube.

[0011] Preferably, the sealing mechanism includes an annular groove, which is opened on the end of the circular tube away from the square shell, and the inner wall of the annular groove is fixedly connected to a sealing sleeve, and the inner side surface of the sealing sleeve is fitted with an insert ring, and the end of the insert ring away from the sealing sleeve is fixedly connected to the end of the circular tube corresponding to the insert tube.

[0012] Preferably, the locking mechanism includes a fixing ring and a sleeve, the fixing ring is fixedly sleeved on the outer wall of the plug tube near the circular tube, and the inner ring surface of the fixing ring is fixedly connected to a rubber ring, the outer walls of the circular tube and the plug tube are both in contact with the inner ring surface of the rubber ring at their respective locations, the sleeve is slidingly sleeved on the outer wall of the circular tube, and a spring 1 is fixedly connected between the sleeve and the square shell, the spring 1 is slidingly sleeved on the outer wall of the circular tube, the outer wall of the sleeve is rotatably connected to multiple connecting plates in a circular array around its center, and multiple connecting plates are rotatably connected to an adjusting plate at one end away from the sleeve, guide components are provided between multiple adjusting plates and the circular tube, and limit components are provided on multiple adjusting plates.

[0013] Preferably, the guide assembly includes a support plate, which is fixedly connected to the outer wall of the circular tube, and the support plate and the fixed ring are in contact with each other, and a square groove is provided on the side wall of the support plate, and the square groove is slidably fitted with the adjustment plate, and the groove wall of the square groove is fixedly connected with a guide rod, and the guide rod moves in turn through the adjustment plate and the support plate.

[0014] Preferably, the limiting assembly includes a pillar, which is slidably inserted into the inner wall of the adjustment plate away from the connecting plate, and one end of the pillar is fixedly connected to a trapezoidal block, the vertical surface of the trapezoidal block is in contact with the side of the fixing ring away from the connecting plate, and a spring three is fixedly connected between the trapezoidal block and the adjustment plate, and the spring three is slidably sleeved on the outer wall of the pillar.

[0015] Preferably, the pushing assembly includes a support frame, which is fixedly connected to the inner wall of the plug tube near the circular tube, and the side wall of the support frame is fixedly connected to a push rod, and the end of the push rod away from the support frame is in contact with the tip of the conical rubber stopper.

[0016] Preferably, the outer wall of the collar and the outer wall of the circular tube away from the square shell are both fixedly connected with auxiliary rods.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the mutual cooperation of the mixing barrel, water pump, main pipe, drip irrigation mechanism, sliding mechanism, blocking mechanism, sealing mechanism, locking mechanism and pushing assembly, etc., in the face of different spacing between multiple ridges on different lands, the front and rear positions of the branch pipes can be adjusted to match them, ensuring that the branch pipes can be accurately laid on the ridges, and there is no need to drill holes outside the main pipe, which is not only convenient to operate but also avoids damage to the main pipe.

[0019] 2. The branch pipe can be quickly and easily disassembled and assembled on the main pipe, that is, the branch pipe can be quickly separated and quickly connected to the main pipe, and the separation can self-seal the round pipe to prevent water loss. After connection, not only can water quickly flow into the branch pipe to achieve rapid dripping of the drip irrigation head, but the sealing can also be guaranteed, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the local structure of the connecting rod of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0023] Figure 4 It is a cross-sectional view of the square shell and the circular tube of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of the structure at point B in the middle;

[0025] Figure 6 It is a cross-sectional view of the circular tube, branch tube, fixing ring, rubber ring, sealing sleeve and insert ring of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified view of the structure at point C in the middle;

[0027] Figure 8 This is a disassembled diagram of the circular tube and the sealing sleeve of the present invention, as well as a display diagram of the annular groove;

[0028] Figure 9 This is a disassembled diagram of the branch pipe, fixed ring and rubber ring of the present invention, as well as a display diagram of the insert ring.

[0029] In the accompanying drawings, the list of parts represented by each reference numeral is as follows: 1. mixing barrel; 2. base; 3. water pump; 4. branch pipe; 5. corrugated telescopic hose; 6. main pipe; 7. connecting rod; 8. slide; 9. plug-in pipe; 10. drip irrigation head; 11. round pipe; 12. adjustment plate; 13. collar; 14. fixing ring; 15. auxiliary rod; 16. spring one; 17. square shell; 18. concave block; 19. knob screw; 20. spring two; 21. push rod; 22. conical rubber plug; 23. fixing plate; 24. guide column; 25. slider; 26. connecting plate; 27. square groove; 28. support plate; 29. guide rod; 30. spring three; 31. pillar; 32. trapezoidal block; 33. support frame; 34. annular groove; 35. sealing sleeve; 36. plug-in ring; 37. rubber ring. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] The present invention provides a technical solution: Figures 1-9 The device is a fertilizer-water integrated agricultural drip irrigation device under mulching conditions, comprising a base 2, on the upper end of which a mixing barrel 1 and a water pump 3 are fixedly mounted in sequence from front to back. The water inlet of the water pump 3 is connected to the bottom end of the mixing barrel 1 via a water pipe, and the water inlet of the water pump 3 is connected to a main pipe 6 via a water pipe. Drip irrigation mechanisms are provided on both sides of the outer wall of the main pipe 6.

[0032] The drip irrigation mechanism includes a square shell 17, which is installed on the outside of the main pipe 6 through a sliding mechanism. A corrugated telescopic hose 5 is connected between the upper end of the square shell 17 and the outer wall of the main pipe 6, and a sealing mechanism is provided inside the square shell 17. The side wall of the square shell 17 away from the main pipe 6 is connected to a round tube 11, and the end of the round tube 11 away from the square shell 17 is plugged with a plug-in tube 9 through a sealing mechanism. The end of the plug-in tube 9 away from the round tube 11 is connected to the branch pipe 4. A locking mechanism is provided between the plug-in tube 9, the round tube 11 and the square shell 17, and a pushing assembly is provided inside the plug-in tube 9. A plurality of drip irrigation heads 10 are fixedly installed on the outer wall of the branch pipe 4.

[0033] The sliding mechanism includes a connecting rod 7 and a knob screw 19. The connecting rod 7 is fixedly connected to the side of the outer wall of the main pipe 6, and a slide groove 8 is provided at the upper and lower ends of the connecting rod 7. The groove walls of the two slide grooves 8 are slidably fitted with sliders 25. The ends of the two sliders 25 away from each other are jointly fixedly connected with a concave block 18. The concave block 18 slides and fits on the outer wall of the connecting rod 7, and the side wall of the concave block 18 away from the slider 25 is fixedly connected to the side wall of the square shell 17 away from the circular tube 11. The knob screw 19 penetrates from top to bottom and is tightened in the concave block 18 and the inner wall of the slider 25 located above, and the lower end of the knob screw 19 is tightly fitted with the groove wall of the slide groove 8 located above.

[0034] The sealing mechanism includes a fixed plate 23, which is fixedly connected to the inner bottom end of the square shell 17, and a guide column 24 is slidably inserted into the side wall of the fixed plate 23. A conical rubber plug 22 is fixedly connected to the end of the guide column 24 close to the circular tube 11. A spring 20 is fixedly connected between the conical rubber plug 22 and the fixed plate 23. The spring 20 is slidably sleeved on the outer wall of the guide column 24. The conical rubber plug 22 is close to the end of the circular tube 11 away from the plug-in tube 9.

[0035] The sealing mechanism includes an annular groove 34, which is opened on the end of the circular tube 11 away from the square shell 17, and the inner wall of the annular groove 34 is fixedly connected to a sealing sleeve 35. The inner side surface of the sealing sleeve 35 is fitted with an insert ring 36. The end of the insert ring 36 away from the sealing sleeve 35 is fixedly connected to the end of the circular tube 11 corresponding to the insert tube 9.

[0036] The locking mechanism includes a fixing ring 14 and a sleeve 13. The fixing ring 14 is fixedly sleeved on the outer wall of the plug-in tube 9 near the circular tube 11, and the inner ring surface of the fixing ring 14 is fixedly connected to a rubber ring 37. The outer walls of the circular tube 11 and the plug-in tube 9 are close to each other and fit with the inner ring surface of the rubber ring 37. The sleeve 13 is slidably sleeved on the outer wall of the circular tube 11, and a spring 16 is fixedly connected between the sleeve 13 and the square shell 17. The spring 16 is slidably sleeved on the outer wall of the circular tube 11. The outer wall of the sleeve 13 is rotatably connected to multiple connecting plates 26 in a circular array around its center. The ends of the multiple connecting plates 26 away from the sleeve 13 are rotatably connected to the adjusting plate 12. Guide components are provided between the multiple adjusting plates 12 and the circular tube 11, and limit components are provided on the multiple adjusting plates 12.

[0037] The guide assembly includes a support plate 28, which is fixedly connected to the outer wall of the circular tube 11, and the support plate 28 and the fixing ring 14 are in contact with each other. A square groove 27 is provided on the side wall of the support plate 28, and the square groove 27 is slidably fitted with the adjustment plate 12. The groove wall of the square groove 27 is fixedly connected to a guide rod 29, and the guide rod 29 moves in sequence through the adjustment plate 12 and the support plate 28.

[0038] The limiting assembly includes a pillar 31, which slides and is inserted into the inner wall of the adjustment plate 12 away from the connecting plate 26, and one end of the pillar 31 is fixedly connected to a trapezoidal block 32, and the vertical surface of the trapezoidal block 32 is in contact with the side of the fixing ring 14 away from the connecting plate 26, and a spring three 30 is fixedly connected between the trapezoidal block 32 and the adjustment plate 12, and the spring three 30 is slidably sleeved on the outer wall of the pillar 31.

[0039] The pushing assembly includes a support frame 33, which is fixedly connected to the inner wall of the plug tube 9 near the circular tube 11, and the side wall of the support frame 33 is fixedly connected to the push rod 21, and the end of the push rod 21 away from the support frame 33 is in contact with the tip of the conical rubber plug 22.

[0040] Auxiliary rods 15 are fixedly connected to the outer wall of the collar 13 and the outer wall of the circular tube 11 away from the square shell 17.

[0041] Working Principle: Mixing barrel 1 can be filled with either clean water or fertilizer. Main pipe 6 is laid on the ground, and two branch pipes 4 are located under the mulch film and on the ridge. Starting water pump 3 pumps water from mixing barrel 1 along the pipe to the interior of main pipe 6. The water then flows through the corrugated telescopic hose 5, square shell 17, round tube 11, plug-in pipe 9, and branch pipes 4 on both sides. Finally, the water slowly drips out from the drip nozzles 10 of the two branch pipes 4, achieving drip irrigation for the crops on the ridge.

[0042] It should be noted that if Figure 2As shown, all structural components on both sides of the main pipe 6 can be arranged in an array from front to back on the main pipe 6, so that branch pipes 4 can be laid on multiple ridges.

[0043] When it is necessary to adjust the front and rear position of one of the branch pipes 4: turn the knob screw 19 upward so that its bottom end loosens the inner wall of the slide groove 8, and then the square shell 17 can be slid forward or backward. The square shell 17 will drive the concave block 18 to slide outside the connecting rod 7, and the concave block 18 will drive the two sliders 25 to slide in their respective corresponding slide grooves 8, and the knob screw 19 will move accordingly. In addition, the square shell 17 will also drive the round tube 11, the plug-in tube 9 and the branch pipe 4 to move together. After the branch pipe 4 is adjusted to the desired position, turn the knob screw 19 downward so that its bottom end is tightly against the inner wall of the slide groove 8 to fix the square shell 17, the round tube 11, the plug-in tube 9 and the branch pipe 4. In this way, the branch pipe 4 not only has the ability to adjust the front and rear position, but also can remain fixed after adjustment.

[0044] It should be noted that when the square housing 17 moves forward or backward, it drives the bellows telescopic hose 5 to swing forward and stretch or swing backward and stretch.

[0045] To sum up, in the face of different spacings between multiple ridges on different lands, the front and rear positions of the branch pipes 4 can be adjusted to match them, ensuring that the branch pipes 4 can be accurately laid on the ridges, and there is no need to drill holes outside the main pipe 6, which is not only convenient to operate but also avoids damage to the main pipe 6.

[0046] The branch pipe 4 is removed from the main pipe 6 in the following manner: the thumb fits on the auxiliary rod 15 connected to the round tube 11, the index finger fits on the auxiliary rod 15 connected to the collar 13, and the index finger pushes the auxiliary rod 15 close to the thumb position, which will drive the collar 13 to slide outside the round tube 11 in the direction of the plug-in pipe 9, and the collar 13 will stretch the spring 16 connected to the square shell 17, and the collar 13 will drive the multiple connecting plates 26 to rotate synchronously, and the multiple connecting plates 26 can drive the respective connected adjustment plates 12 to slide away from the square groove 27 in the corresponding square groove 27, and the adjustment plates 12 will also slide outside the guide rod 29, and each adjustment plate 12 will drive the trapezoidal The block 32 moves away from the plug-in tube 9 until the vertical surface of each trapezoidal block 32 leaves the fixing ring 14. At this time, the plug-in tube 9 can be pulled out away from the round tube 11. The plug-in tube 9 will drive the plug ring 36 to leave the annular groove 34 on the round tube 11 and detach from the sealing sleeve 35 in the annular groove 34. The plug-in tube 9 will also drive the push rod 21 to move together through the support frame 33. The push rod 21 will loosen the conical rubber plug 22. The spring 20 is originally in a compressed state. Then, under the action of the spring 20, the conical rubber plug 22 will automatically move forward and fit tightly with the end of the round tube 11, so that the round tube 11 can be quickly sealed. At this time, the plug-in tube 9 will be pulled out and removed together with the branch pipe 4.

[0047] The branch pipe 4 is installed on the main pipe 6 in the following way: hold the plug-in pipe 9 and insert the plug ring 36 against the inner side of the sealing sleeve 35. The plug-in pipe 9 will also move with the fixing ring 14. The fixing ring 14 will squeeze the inclined surface of each trapezoidal block 32 and push each trapezoidal block 32 to move away from the plug-in pipe 9. Each trapezoidal block 32 will also squeeze the spring three 30 connected to the adjustment plate 12 and drive the various connected guide rods 29 to slide in the corresponding adjustment plate 12 until the plug-in pipe 9 is in contact with the multiple support plates 28. At this time, the plug ring 36 is completely inserted into the sealing sleeve 35, and at this time, under the action of the spring three 30, each trapezoidal block 32 will be reset, and the vertical surface of each trapezoidal block 32 will be in contact with the side of the fixing ring 14, as shown in FIG. Figure 5 As shown, the plug-in tube 9 is thereby restricted.

[0048] It should be noted that after the plug-in tube 9 is fully inserted with the insert ring 36 facing the inner side of the sealing sleeve 35, it will drive the push rod 21 to push the tapered rubber plug 22, which will again squeeze the spring 20, and the tapered rubber plug 22 will leave the end of the circular tube 11, thereby quickly connecting the plug-in tube 9 with the square shell 17. The water in the main pipe 6 will quickly enter the plug-in tube 9 and the branch pipe 4 through the corrugated telescopic hose 5 and the square shell 17. At the same time, the mutual cooperation between the sealing sleeve 35 and the insert ring 36, and the rubber ring 37 installed at the joint between the circular tube 11 and the plug-in tube 9, can maintain a good seal between the plug-in tube 9 and the circular tube 11, preventing water leakage.

[0049] In summary, the branch pipe 4 can be quickly and simply disassembled and assembled on the main pipe 6, that is, the branch pipe 4 can be quickly separated and quickly connected to the main pipe 6, and the separation can self-seal the circular tube 11 to prevent water loss. After connection, not only can water quickly flow into the branch pipe 4 to achieve rapid dripping of the drip head 10, but the sealing can also be guaranteed, and the operation is convenient.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fertilizer-water integrated agricultural drip irrigation device under film-covered conditions, comprising a base (2), characterized in that: A mixing barrel (1) and a water pump (3) are fixedly mounted on the upper end of the base (2) in sequence from front to back, the water inlet end of the water pump (3) is connected to the bottom end of the mixing barrel (1) through a water pipe, and the water inlet end of the water pump (3) is connected to a main pipe (6) through a water pipe, and drip irrigation mechanisms are provided on both sides of the outer wall of the main pipe (6); The drip irrigation mechanism comprises a square shell (17), which is mounted on the outside of the main pipe (6) via a sliding mechanism. A corrugated telescopic hose (5) is connected between the upper end of the square shell (17) and the outer wall of the main pipe (6). A sealing mechanism is provided inside the square shell (17). A side wall of the square shell (17) away from the main pipe (6) is connected to a round pipe (11). An end of the round pipe (11) away from the square shell (17) is plugged into a plug-in pipe (9) via a sealing mechanism. An end of the plug-in pipe (9) away from the round pipe (11) is connected to a branch pipe (4). A locking mechanism is provided between the plug-in pipe (9), the round pipe (11) and the square shell (17). A pushing assembly is provided inside the plug-in pipe (9). A plurality of drip irrigation heads (10) are fixedly mounted on the outer wall of the branch pipe (4).

2. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 1, characterized in that: The sliding mechanism includes a connecting rod (7) and a knob screw (19), the connecting rod (7) is fixedly connected to the outer wall side of the main pipe (6), and the upper and lower ends of the connecting rod (7) are provided with a slide groove (8), the groove walls of the two slide grooves (8) are slidably fitted with a slider (25), and the ends of the two sliders (25) away from each other are fixedly connected with a concave block (18), the concave block (18) is slidably fitted on the outer wall of the connecting rod (7), and the side wall of the concave block (18) away from the slider (25) is fixedly connected to the side wall of the square shell (17) away from the round tube (11), the knob screw (19) is sequentially passed through the concave block (18) and the inner wall of the slider (25) located above, and the lower end of the knob screw (19) is tightly fitted with the groove wall of the slide groove (8) located above.

3. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 1, characterized in that: The blocking mechanism includes a fixed plate (23), the fixed plate (23) is fixedly connected to the inner bottom end of the square shell (17), and a guide column (24) is slidably inserted into the side wall of the fixed plate (23), and the guide column (24) is fixedly connected to the end of the guide column (24) close to the circular tube (11), and a spring 2 (20) is fixedly connected between the conical rubber plug (22) and the fixed plate (23), and the spring 2 (20) is slidably sleeved on the outer wall of the guide column (24), and the conical rubber plug (22) is close to the end of the circular tube (11) away from the plug-in tube (9).

4. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 1, characterized in that: The sealing mechanism comprises an annular groove (34), the annular groove (34) being formed on one end of the circular tube (11) away from the square shell (17), and a sealing sleeve (35) being fixedly connected to the inner wall of the annular groove (34), an insert ring (36) being fitted on the inner side surface of the sealing sleeve (35), and an end of the insert ring (36) away from the sealing sleeve (35) being fixedly connected to an end of the insert pipe (9) corresponding to the circular tube (11).

5. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 1, characterized in that: The locking mechanism comprises a fixing ring (14) and a sleeve ring (13), wherein the fixing ring (14) is fixedly sleeved on the outer wall of the plug-in tube (9) near the circular tube (11), and the inner ring surface of the fixing ring (14) is fixedly connected with a rubber ring (37), and the outer walls of the circular tube (11) and the plug-in tube (9) are close to each other and fit with the inner ring surface of the rubber ring (37), and the sleeve ring (13) is slidably sleeved on the outer wall of the circular tube (11), and the sleeve ring (13) and the square shell (17) are fixedly connected. ) is fixedly connected with a spring (16), the spring (16) is slidably sleeved on the outer wall of the circular tube (11), the outer wall of the collar (13) is connected to a plurality of connecting plates (26) in a rotating circular array around its center, and the ends of the plurality of connecting plates (26) away from the collar (13) are all rotatably connected to an adjusting plate (12), and a guide component is provided between the plurality of adjusting plates (12) and the circular tube (11), and a limit component is provided on the plurality of adjusting plates (12).

6. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 5, characterized in that: The guide assembly includes a support plate (28), the support plate (28) is fixedly connected to the outer wall of the circular tube (11), and the support plate (28) and the fixing ring (14) are in contact with each other, and a square groove (27) is provided on the side wall of the support plate (28), and the square groove (27) is slidably matched with the adjustment plate (12). The groove wall of the square groove (27) is fixedly connected to a guide rod (29), and the guide rod (29) is movable and passes through the adjustment plate (12) and the support plate (28) in sequence.

7. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 5, characterized in that: The limiting assembly includes a pillar (31), the pillar (31) is slidably inserted into the inner wall of the adjustment plate (12) away from the connecting plate (26), and one end of the pillar (31) is fixedly connected to a trapezoidal block (32), the vertical surface of the trapezoidal block (32) is in contact with a side surface of the fixing ring (14) away from the connecting plate (26), and a spring three (30) is fixedly connected between the trapezoidal block (32) and the adjustment plate (12), and the spring three (30) is slidably sleeved on the outer wall of the pillar (31).

8. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 3, characterized in that: The pushing assembly includes a support frame (33), the support frame (33) is fixedly connected to the inner wall of the plug tube (9) near the circular tube (11), and the side wall of the support frame (33) is fixedly connected to a push rod (21), and the end of the push rod (21) away from the support frame (33) is in contact with the tip of the conical rubber plug (22).

9. The fertilizer-water integrated agricultural drip irrigation device under film-covered conditions according to claim 5, characterized in that: The outer wall of the collar (13) and the outer wall of the circular tube (11) are both fixedly connected with auxiliary rods (15) at locations away from the square shell (17).

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