A water-saving irrigation device and irrigation method for forestry seedling cultivation

Abstract

The invention discloses a forestry seedling water-saving irrigation device and an irrigation method, and relates to the field of irrigation technology. The forestry seedling water-saving irrigation device comprises a water distribution pipe and an irrigation head arranged on the water distribution pipe, wherein the irrigation head comprises: a shell, wherein a main pipe is axially arranged in the shell, and water enters the lower end of the shell, and the water in the shell can enter the main pipe, and a water wheel is fixedly arranged on the circumference of the lower end of the main pipe so that the main pipe can rotate when water enters the shell; a jet pipe, wherein a plurality of jet pipes are arranged, and the jet pipes are arranged in the circumference of the main pipe close to the upper end, and the lower end of the jet pipe is rotatably installed on the periphery of the main pipe, and a connecting hose is connected between the jet pipe and the main pipe; an adjustment ring, wherein the adjustment ring is arranged at the upper end of the shell, and a sloped through groove is provided inside the adjustment ring. The forestry seedling water-saving irrigation device and the irrigation method can make the jet pipe continuously adjust its own angle in the state of revolution, and irrigate a large area and evenly.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation, in particular to a forestry seedling raising water-saving irrigation device and an irrigation method. Background Art

[0002] With the development of intelligent agriculture, the traditional method of water hose casting has gradually been replaced by fixed-point pre-buried irrigation pipes and sprinklers installed on the pipes. However, most of the existing sprinklers are single-nozzle designs, and once installed, the spray angle is fixed and the spray range is small.

[0003] In particular, for example, the invention patent with application number CN202010218485.7 proposes an intelligent agricultural self-generating variable-angle irrigation nozzle, which achieves the purpose of online adjustment of the spray angles of multiple nozzles by setting up multiple synchronous adjustment structures; and it realizes the function of self-generation by setting up a power generation impeller group and a turbine generator, without the need for an external power supply.

[0004] Although the above document can irrigate at multiple angles, it is difficult to thoroughly irrigate the gap area between the sprinklers, resulting in poor irrigation uniformity.

[0005] For another example, the patent with the publication number CN117531616A proposes a smart irrigation sprinkler, which drives the impeller kit to rotate when water flows into the sprinkler body, and the impeller kit drives the sleeve to reciprocate along its axial direction in the sprinkler body during the rotation process. The sleeve drives several spheres to deflect through several telescopic parts during the reciprocating sliding process. During the reciprocating deflection process, the angle between the jet holes on the sphere and the axis of the sprinkler body changes periodically, that is, the jet holes of the multiple spheres distributed in an annular shape change their jet elevation angles periodically, and finally realizes the function of uniformly spraying irrigation outward with the sprinkler body as the center of the circle. Compared with the existing smart irrigation sprinklers, it has a simple structure, low manufacturing cost, and can be installed on the pipe network on a large scale. In this document, although there is no need to generate electricity, there is still the problem that the gap area between the sprinklers is difficult to irrigate thoroughly.

[0006] Another example is a self-rotating irrigation sprinkler proposed in the patent with publication number CN108654865A, which can rotate the water spray hole to achieve the purpose of uniform irrigation. However, it cannot irrigate at multiple angles, resulting in poor uniformity of irrigation at near and far distances. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a forestry seedling water-saving irrigation device and an irrigation method, which solve the problem of poor irrigation uniformity in the prior art.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a forestry seedling water-saving irrigation device, comprising a water distribution pipe and an irrigation head arranged on the water distribution pipe, the irrigation head comprising: a shell, a main pipe is axially arranged in the shell, and water enters the lower end of the shell, the water in the shell can enter the main pipe, a water wheel is fixed on the circumference of the lower end of the main pipe, so that the main pipe can rotate when water enters the shell; a jet pipe, a plurality of jet pipes are arranged in the circumference of the main pipe near the upper end, and the lower end of the jet pipe is rotatably mounted on the periphery of the main pipe , a connecting hose is connected between the jet pipe and the main pipe; an adjusting ring, the adjusting ring is arranged at the upper end of the shell, and a slope groove is opened inside the adjusting ring, the lower end area of ​​the slope groove is smaller than the upper end area, and the slope groove includes a convex portion protruding toward the center of the adjusting ring and a concave portion sunken toward the outer surface of the adjusting ring, the main pipe can rotate to make the jet pipe move periodically along the slope groove, and the concave portion and the convex portion are used to change the angle of the jet pipe relative to the main pipe when it moves along the slope groove, so as to form a state of irrigation with continuously changing angles when the jet pipe rotates.

[0009] Furthermore, a second fixing ring is fixedly provided on the outside of the main pipe at a position opposite to the lower end of the jet pipe; the jet pipe comprises: an inlet pipe, the lower end of which is mounted on the second fixing ring by rotation with a torsion spring; a water outlet pipe, the water outlet pipe is arranged at the upper end of the water inlet pipe, and the inclination angles of the multiple water outlet pipes are different; and a spray head, the spray head is arranged at the upper end of the water outlet pipe.

[0010] Furthermore, it also includes a shifting ring assembly, which is used to drive the adjusting ring to rotate intermittently along the center of the outer shell, so that the adjusting ring can continuously adjust the positions of the concave part and the convex part relative to the same irrigation area.

[0011] Further, the housing includes a bottom shell, a middle shell and a top shell which are sequentially arranged from bottom to top; the adjustment ring is rotatably assembled on the upper end of the top shell, and a rotation damper is arranged between the adjustment ring and the top shell; the transfer ring assembly includes: a first gear which is rotatably mounted on one side of the top shell through a bracket; a driven gear which is fixed on the outer surface of the top shell and meshes with the lower part of the first gear;

[0012] An arc-shaped tooth plate, a fixing ring is fixed on the upper end of the main pipe, and the arc-shaped tooth plate is fixed to one side of the first gear through a connecting rod and meshes with the upper part of the first gear; a guide groove is provided on the lower end surface of the adjustment ring, and an integrated guide track is provided on the upper end surface of the top shell.

[0013] Furthermore, the outer shell includes a bottom shell and a middle shell which are arranged in sequence from bottom to top, and a lower extension portion is provided at the lower end of the adjustment ring; the shift ring assembly includes: an inner tooth portion, which is arranged on the inner surface of the lower extension portion; an outer tooth portion, which is arranged on the outer surface of the second fixed ring; a second gear, which is rotatably installed on the middle shell, and the second gear is located between the second fixed ring and the inner tooth portion; a wrapping portion is provided at the lower end of the lower extension portion, and the wrapping portion is located at the periphery of the middle shell, the inner wall of the wrapping portion is provided with an inner concave ring groove, and the outer wall of the middle shell is provided with an outer convex ring matching the inner concave ring groove.

[0014] Furthermore, the inner wall of the middle shell is fixedly provided with a limiting spoke, the main pipe is rotatably arranged in the middle of the limiting spoke, the upper end of the middle shell is fixedly provided with a partition to block the upper end of the middle shell, and the main pipe passes through the partition;

[0015] The portion of the main pipe located in the middle shell is set as a narrow portion, and an integral absorption pipe is arranged on the outer surface of the narrow portion so that the absorption pipe absorbs liquid from the bottom shell to rotate the water wheel.

[0016] Furthermore, a joint is threadedly connected to the lower end of the bottom shell, a support pipe is fixedly provided at the lower end of the joint, and the lower end of the support pipe is fixedly connected to the water distribution pipe.

[0017] Furthermore, an integral receiving bucket is provided on the outside of the joint; a venturi tube is rotatably provided on the lower end of the main tube, a return water suction pipe is fixedly provided on one side of the venturi tube, and the other end of the return water suction pipe passes through the bottom shell and is taken into the receiving bucket.

[0018] On the other hand, the present invention also provides a forestry seedling water-saving irrigation method, comprising the following steps:

[0019] S1, control the water flow at the water source position to enter the bottom shell through the water distribution pipe and support pipe;

[0020] S2. The water flow entering the bottom shell can enter the main pipe and then be ejected from the jet pipe. When the water in the main pipe passes through the narrow part, negative pressure is formed at the absorption pipe, so that the absorption pipe absorbs the water in the bottom shell, and the water flow around the water wheel drives the water wheel to rotate. The water wheel drives the water wheel and the components thereon to rotate to form a rotating jet pipe. The rotating jet pipe can adjust its own angle along the concave and convex parts of the slope groove to achieve multi-angle rotation irrigation.

[0021] Furthermore, in S2, when the main pipe rotates, the adjusting ring is driven to rotate intermittently along the center of the outer shell, so that the adjusting ring can continuously adjust the positions of the concave and convex parts relative to the same irrigation area, so that the same jet pipe can irrigate different areas when it reaches the same position of the slope groove.

[0022] The present invention has the following beneficial effects:

[0023] (1) The forestry seedling water-saving irrigation device and irrigation method can enable the jet tube to continuously adjust its angle while in a state of revolution. Its revolution can greatly increase the irrigation area. Its angle adjustment can cause the jet elevation angle to change periodically, thereby achieving the purpose of uniform spraying at far and near distances. Thus, the forestry seedling water-saving irrigation device provided by the embodiment of the present invention can irrigate a large area and uniformly.

[0024] (2) In the forestry seedling water-saving irrigation device and irrigation method, the angle of the outlet pipe of each jet tube is different, so multiple jet tubes at the same position of the slope groove will produce different spray angles, further improving the uniformity of long-distance and short-distance spraying, and are equipped with corresponding shifting ring components to ensure the periodicity of long-distance and short-distance spraying, further improving the uniformity of long-distance and short-distance spraying.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall diagram of the present invention;

[0027] Figure 2 is an overall diagram of the irrigation head in the first embodiment of the present invention;

[0028] Figure 3 For the present invention Figure 2 sectional view of

[0029] Figure 4 For the present invention Figure 3 The main view;

[0030] Figure 5 For the present invention Figure 3 Schematic diagram of the connector not installed;

[0031] Figure 6 For the present invention Figure 5 Exploded diagram of

[0032] Figure 7 It is a structural schematic diagram of an adjustment ring in Embodiment 1 of the present invention;

[0033] Figure 8 is a top view of the adjustment ring in the first embodiment of the present invention;

[0034] Fig. 9 This is a bottom view of the main pipe in the first embodiment of the present invention;

[0035] Fig.10 A top view of the irrigation head in the first embodiment of the present invention in a state where the joint is not assembled;

[0036] Fig.11 It is a top view of the irrigation head in another state without the joint assembled in the first embodiment of the present invention;

[0037] Fig.12 It is a top view of the irrigation head in the third state without the joint assembled in the first embodiment of the present invention;

[0038] Fig.13 A top view of the irrigation head in the fourth state without the joint assembled in the first embodiment of the present invention

[0039] Fig.14 for Fig.11 Schematic diagram of the installation of the first gear;

[0040] Fig.15 It is a schematic diagram of the transfer ring assembly in the second embodiment of the present invention.

[0041] In the figure, 1, joint; 2, receiving bucket; 3, outer shell; 31, top shell; 311, guide track; 32, middle shell; 321, limit spoke; 322, partition; 323, outer convex ring; 33, bottom shell; 4, jet pipe; 41, water inlet pipe; 42, water outlet pipe; 43, jet head; 6, adjustment ring; 61, guide slide; 601, concave part; 602, convex part; 62, lower extension part; 63, wrapping part; 631, inner concave ring Groove; 7, main pipe; 71, narrow part; 72, absorption pipe; 9, shift ring assembly; 91, fixed ring 1; 92, connecting rod; 93, arc-shaped tooth plate; 94, driven gear; 95, first gear; 96, bracket; 97, outer gear; 98, second gear; 99, inner gear; 10, connecting hose; 11, water wheel; 12, venturi tube; 13, return water suction pipe; 14, fixed ring 2; 16, water distribution pipe; 17, support pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] Refer to the following Figure 1 - Fig.15 The invention describes a water-saving irrigation device and an irrigation method for raising forestry seedlings provided in an embodiment of the invention.

[0045] Embodiment 1

[0046] See also Figure 1 As shown, an embodiment of the present invention provides a forestry seedling water-saving irrigation device, including a water distribution pipe 16 connected to a water source and an irrigation head arranged on the water distribution pipe 16. Preferably, a support pipe 17 is assembled between the irrigation head and the water distribution pipe 16 to support the irrigation head to a required height.

[0047] Optionally, the height of the irrigation head is 60-80 cm.

[0048] Combination Figure 2 - Figure 6 As shown, the above-mentioned irrigation head includes a shell 3, in which a main pipe 7 is axially arranged. The shell 3 should be filled with water from the lower end, that is, the water in the water distribution pipe 16 can enter the inside of the shell 3 from the lower end of the shell 3, and the water entering the shell 3 can enter the main pipe 7. A water wheel 11 is fixedly arranged on the circumference of the lower end of the main pipe 7, so that when the water flows in the shell 3, it can drive the main pipe 7 to rotate.

[0049] In order to prevent the water from directly entering the main pipe 7 at the bottom of the outer shell 3, resulting in the formation of "dead water" in the water around the water wheel 11, so that the water wheel 11 cannot rotate, in this embodiment, the middle part of the main pipe 7 higher than the water wheel 11 is set as a narrow part 71, and an integrated absorption pipe 72 is provided on the outer surface of the narrow part 71. The diameter of the narrow part 71 is small, so when the water flows through the narrow part 71, a negative pressure can be formed at the position of the absorption pipe 72, so that the absorption pipe 72 can absorb the water flow at the lower part of the outer shell 3, so that the water flows through the water wheel 11, thereby ensuring the rotation of the water wheel 11.

[0050] In order to achieve irrigation, a jet tube 4 is also provided. There are multiple jet tubes 4, and the jet tubes 4 are arranged in the circumference near the upper end of the main pipe 7. Multiple jet tubes 4 can significantly increase the irrigation range. The lower end of the jet tube 4 is rotatably installed on the periphery of the main pipe 7 so that the angle of the jet tube 4 can be adjusted, thereby achieving the purpose of multi-angle irrigation. In addition, a connecting hose 10 is required to be connected between the jet tube 4 and the main pipe 7. On the one hand, the connecting hose 10 can transport the water in the main pipe 7 to the inside of the jet tube 4. On the other hand, due to the flexible nature of the connecting hose 10, it can compensate for the angle change of the jet tube 4.

[0051] Optionally, the connecting hose 10 is a corrugated tube or a rubber hose.

[0052] Combination Figure 5 - Figure 8As shown, in the above scheme, in order to achieve the purpose of multi-angle irrigation during the rotation of the jet tube 4 driven by the main pipe 7, an adjustment ring 6 is provided here. The adjustment ring 6 is arranged at the upper end of the outer shell 3, and a slope groove is opened inside the adjustment ring 6. The lower end area of ​​the slope groove is smaller than the upper end area, that is, the inclination angle of the slope groove should be an acute angle, so that the slope groove can support the jet tube 4 and form an upward state. The slope groove here includes a convex portion 602 protruding toward the center of the adjustment ring 6 and a concave portion 601 recessed toward the outer surface of the adjustment ring 6. When the main pipe 7 rotates, the jet tube 4 can move periodically along the slope groove, so that the concave portion 601 and the convex portion 602 can change the angle of the jet tube 4 relative to the main pipe 7 when it moves along the slope groove, forming a state of irrigation with continuously changing angles when the jet tube 4 rotates.

[0053] Therefore, the forestry seedling water-saving irrigation device provided in the embodiment of the present invention can enable the jet tube 4 to continuously adjust its own angle while in a state of revolution. Its revolution can greatly increase the irrigation area, and its angle adjustment can cause the jet elevation angle to change periodically, thereby achieving the purpose of uniform spraying near and far, thereby achieving large-area and uniform irrigation of the forestry seedling water-saving irrigation device provided in the embodiment of the present invention.

[0054] Combination Figure 3 - Figure 6 as well as Fig. 9 As shown, a fixing ring 14 is fixedly provided on the outside of the main pipe 7 at a position opposite to the lower end of the jet pipe 4. In fact, the jet pipe 4 is assembled on the fixing ring 14. The jet pipe 4 mentioned above includes an inlet pipe 41, an outlet pipe 42 and a spray head 43. The lower end of the inlet pipe 41 is limited to be mounted on the fixing ring 14 by rotation with a torsion spring, so that the lower end of the inlet pipe 41 can rotate on the fixing ring 14 to adjust its own angle. The outlet pipe 42 is arranged at the upper end of the inlet pipe 41. Preferably, the inlet pipe 41 and the outlet pipe 42 are an integrated structure, and the inclination angles of the plurality of outlet pipes 42 are different. The spray head 43 is arranged at the upper end of the outlet pipe 42. Preferably, the spray head 43 is a conical structure to increase the pressure of the sprayed water.

[0055] More specifically, the multiple water outlet pipes 42 mentioned here have different inclination angles, for example Figure 4 and Figure 5 As shown, there are six jet tubes 4 in total, of which the water outlet pipes 42 in three jet tubes 4 have the same angle, and the water outlet pipes 42 in the other three jet tubes 4 have the same angle, that is, there are water outlet pipes 42 with two inclined angles in total.

[0056] Of course, in actual application scenarios, the angles of the water outlet pipes 42 in the six jet pipes 4 may be different, that is, there are a total of six water outlet pipes 42 with different inclination angles.

[0057] In this embodiment, since a plurality of jet tubes 4 at the same position of the slope groove will produce different spray angles, the uniformity of the spraying at far and near distances is further improved.

[0058] As mentioned above, since the plurality of jet tubes 4 have different spray angles at the same position of the through groove on the slope, the spray angles of the concave portion 601 and the convex portion 602 in the area to be irrigated are different, that is, relative to the area that can be irrigated by the entire irrigation head, the spray angles of the water received by the irrigation area corresponding to the concave portion 601 and the irrigation area corresponding to the convex portion 602 are different, for example Fig.10 As shown, one of the jet tubes 4 is set as a, and the other jet tube 4 with a different angle from the outlet pipe 42 of a is set as c, one of the recesses 601 is set as d, and one of the protrusions 602 is set as e. Then, the spray angles of a when reaching d and e are different, and the spray angles of c when reaching d and e are also different, resulting in different spray angles of water received by the irrigation area relative to the recess 601 and the irrigation area relative to the protrusion 602, affecting the uniformity of irrigation; for this purpose, an embodiment of the present invention provides a shifting ring assembly 9, which can drive the adjustment ring 6 to rotate intermittently along the center of the circle of the shell 3, so that the adjustment ring 6 can continuously adjust the positions of the recess 601 and the protrusion 602 relative to the same irrigation area.

[0059] Combination Figure 3 , Figure 5 , Figure 6 and Fig.14 As shown, in this embodiment, the housing 3 includes a bottom shell 33, a middle shell 32 and a top shell 31 which are arranged in sequence from bottom to top. Preferably, the three are integrally formed, and the adjustment ring 6 is rotatably assembled at the upper end of the top shell 31, and a rotation damper is arranged between the adjustment ring 6 and the top shell 31. The rotation damper is provided to avoid pushing the adjustment ring 6 to rotate synchronously when the jet tube 4 moves along the inner wall of the slope groove of the adjustment ring 6.

[0060] In this embodiment, the transfer ring assembly 9 includes a first gear 95, a driven gear 94 and an arc-shaped tooth plate 93. The first gear 95 is rotatably mounted on one side of the top shell 31 through a bracket 96. The driven gear 94 is fixed to the outer surface of the top shell 31 and meshes with the lower part of the first gear 95. A fixing ring 91 is fixed to the upper end of the main pipe 7. The arc-shaped tooth plate 93 is fixed to one side of the first gear 95 through a connecting rod 92 and meshes with the upper part of the first gear 95.

[0061] Specifically, when the main pipe 7 rotates, the fixed ring 91 thereon will drive the arc-shaped tooth plate 93 to rotate via the connecting rod 92. When the arc-shaped tooth plate 93 rotates to the position of the first gear 95, it can make the first gear 95 rotate, so that the first gear 95 can drive the adjusting ring 6 to rotate by driving the driven gear 94. When the arc-shaped tooth plate 93 is disengaged from the first gear 95, the adjusting ring 6 no longer rotates, thereby achieving the purpose of intermittently rotating the adjusting ring 6 for a certain distance.

[0062] In addition, in order to ensure the rotation stability of the adjustment ring 6 , a guide slot 61 is provided on the lower end surface of the adjustment ring 6 , and an integrated guide track 311 is provided on the upper end surface of the top shell 31 .

[0063] The above-mentioned rotation damping is preferably achieved by providing a rough surface on the inner wall of the guide slot 61 or the outer surface of the guide track 311 .

[0064] Reference Fig.10 - Fig.13 To better understand the effect of the above-mentioned shift ring assembly 9 on the injection angle of the jet tube 4, in this solution, Fig.10 For example, position a is in area b. At this time, position a is supported by position b and tilts along position b. The water jetted out is Fig.10 In the direction indicated by the middle arrow, as the main pipe 7 drives the jet pipe 4 to rotate, a leaves the b position, and c reaches the b position (as shown in FIG. Fig.11 As shown in FIG. 1 ), as the main pipe 7 continues to rotate, the shift ring assembly 9 drives the adjustment ring 6 to rotate, and at this time, the position b changes (as shown in FIG. 1 ). Fig.12 - Fig.13 ), when a reaches position b again, the water it ejects is Fig.13 The direction indicated by the arrow, and Fig.13 In and original Fig.10 The outflow angle at the same position as b is Fig.10 The directions of the arrows indicated in the figure are different, that is, the adjustment ring 6 intermittently changes its position and the jet tube 4 continuously changes its position, so that the forest seedlings can be irrigated evenly and periodically.

[0065] Combination Figure 4 - Figure 6 As shown, a limiting spoke 321 is fixedly provided on the inner wall of the middle shell 32, and the main pipe 7 is rotatably arranged in the middle of the limiting spoke 321. The limiting spoke 321 as a whole does not block the communication between the middle shell 32 and the bottom shell 33. A partition 322 is fixedly provided at the upper end of the middle shell 32 to seal the upper end of the middle shell 32 to prevent water in the middle shell 32 from leaking upward (the second gear 98 mentioned above is rotatably installed on the upper surface of the partition 322 through the central axis), and the main pipe 7 passes through the partition 322 and extends upward, and the upper end of the main pipe 7 is a sealed end.

[0066] The narrow portion 71 mentioned above is located inside the middle shell 32 .

[0067] like Figure 3 and Figure 4 As shown, the lower end of the bottom shell 33 is threadedly connected with a joint 1, the lower end of the joint 1 is fixedly connected to the support pipe 17, and the lower end of the support pipe 17 is fixedly connected to the water distribution pipe 16, so that the water in the water distribution pipe 16 passes through the support pipe 17 and the joint 1 to reach the bottom shell 33.

[0068] In addition, in order to prevent excessive water around the irrigation head from causing the death of the seedlings below the irrigation head, an integrated receiving bucket 2 is provided on the outside of the joint 1, and the receiving bucket 2 can receive the water that falls around the irrigation head from above.

[0069] In order to avoid wasting water in the receiving bucket 2, a venturi tube 12 is rotatably provided at the lower end of the main pipe 7, and a return water suction pipe 13 is fixedly provided on one side of the venturi tube 12. The other end of the return water suction pipe 13 passes through the bottom shell 33 and is sucked into the receiving bucket 2. When the water flows into the main pipe 7 through the venturi tube 12, negative pressure is generated at the position of the return water suction pipe 13, so that the return water suction pipe 13 can absorb water from the inside of the receiving bucket 2, so that the water re-enters the inside of the main pipe 7, thereby saving water resources.

[0070] Embodiment 2:

[0071] like Fig.15 In fact, the difference between this embodiment and the first embodiment is that the outer shell 3 includes a bottom shell 33 and a middle shell 32 arranged from bottom to top, the bottom shell 33 and the middle shell 32 are an integrated structure, and the lower end of the adjustment ring 6 is provided with a lower extension portion 62.

[0072] The shift ring assembly 9 includes an inner tooth portion 99, an outer tooth portion 97 and a second gear 98. The inner tooth portion 99 is arranged on the inner surface of the lower extension portion 62; the outer tooth portion 97 is arranged on the outer surface of the fixing ring 14, and the second gear 98 is rotatably installed on the middle shell 32, and the second gear 98 is located between the fixing ring 14 and the inner tooth portion 99.

[0073] In this embodiment, when the main pipe 7 drives the fixing ring 14 to rotate, the outer tooth portion 97 thereon can drive the second gear 98 to rotate when reaching the position of the second gear 98, thereby driving the adjusting ring 6 to rotate through the second gear 98 and the inner tooth portion 99.

[0074] In order to improve the rotational stability of the adjustment ring 6, a wrapping portion 63 is provided at the lower end of the lower extension portion 62, and the wrapping portion 63 is located at the periphery of the middle shell 32. The inner wall of the wrapping portion 63 is provided with an inner concave annular groove 631, and the outer wall of the middle shell 32 is provided with an outer convex ring 323 adapted to the inner concave annular groove 631. The rotation damping is a rough surface provided on the outer surface of the outer convex ring 323 or the inner surface of the inner concave annular groove 631.

[0075] In a second aspect, an embodiment of the present invention further provides a forestry seedling water-saving irrigation method, comprising the following steps:

[0076] S1. Control the water flow at the water source position to enter the bottom shell 33 through the water distribution pipe 16 and the support pipe 17. The water source mentioned here can also be the water after the fertilizer is mixed in the mixer;

[0077] S2. The water flow entering the bottom shell 33 can enter the main pipe 7 and then be ejected from the jet pipe 4. When the water in the main pipe 7 passes through the narrow portion 71, negative pressure is formed at the absorption pipe 72, so that the absorption pipe 72 absorbs the water in the bottom shell 33, and the water flow around the water wheel 11 drives the water wheel 11 to rotate. The water wheel 11 drives the main pipe 7 and the components thereon to rotate to form a rotating jet pipe 4. The rotating jet pipe 4 can adjust its own angle along the concave portion 601 and the convex portion 602 of the slope groove to achieve multi-angle rotation irrigation.

[0078] In the above S2, when the main pipe 7 rotates, the adjusting ring 6 is driven to intermittently rotate along the center of the shell 3, so that the adjusting ring 6 can continuously adjust the positions of the concave portion 601 and the convex portion 602 relative to the same irrigation area, so that the same jet pipe 4 can irrigate different areas when it reaches the same position of the slope groove.

[0079] When in use (working), the water source enters the bottom shell 33 through the water distribution pipe 16 and the support pipe 17, and enters the interior of the main pipe 7 through the venturi tube 12. The water entering the interior of the main pipe 7 can form a negative pressure at the position of the narrow portion 71, so that the absorption pipe 72 absorbs the water in the bottom shell 33 and returns to the main pipe 7. The flowing water passes through the water wheel 11 to rotate the water wheel 11. The rotation of the water wheel 11 can drive the upper jet pipe 4 to rotate. The water in the main pipe 7 reaches the interior of the jet pipe 4 through the connecting hose 10 and is sprayed out from the injection head 43. When the water wheel 11 rotates, it can drive the main pipe 7 and the jet pipe 4 to rotate, so that the jet pipe 4 moves periodically along the slope groove, so that the concave portion 601 and the convex portion 602 can change the angle of the jet pipe 4 relative to the main pipe 7 when it moves along the slope groove, forming a state of continuous angle irrigation of the jet pipe 4 in the rotating state, and the shifting ring assembly 9 can drive the adjusting ring 6 to continuously adjust the positions of the concave portion 601 and the convex portion 602, so as to achieve the purpose of irrigating the forest seedlings evenly and periodically.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0081] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A water-saving irrigation device for forestry seedling cultivation, comprising a water distribution pipe (16) and an irrigation head arranged on the water distribution pipe (16), characterized in that: The irrigation head comprises: A housing (3), wherein a main pipe (7) is axially arranged in the housing (3), and water enters the lower end of the housing (3), so that the water in the housing (3) can enter the main pipe (7), and a water wheel (11) is fixedly arranged on the circumference of the lower end of the main pipe (7) so that the main pipe (7) can rotate when water enters the housing (3); A jet tube (4), wherein a plurality of the jet tubes (4) are provided, and the jet tubes (4) are arranged in the circumferential direction of the main tube (7) near the upper end, and the lower end of the jet tube (4) is rotatably mounted on the periphery of the main tube (7), and a connecting hose (10) is connected between the jet tube (4) and the main tube (7); An adjustment ring (6), the adjustment ring (6) being arranged at the upper end of the housing (3), and a sloped groove being provided inside the adjustment ring (6), the lower end area of ​​the sloped groove being smaller than the upper end area, and the sloped groove comprising a convex portion (602) protruding toward the center of the adjustment ring (6) and a concave portion (601) recessed toward the outer surface of the adjustment ring (6), the main pipe (7) being rotated to enable the jet pipe (4) to periodically move along the sloped groove, the concave portion (601) and the convex portion (602) being used to change the angle of the jet pipe (4) relative to the main pipe (7) when the jet pipe (4) moves along the sloped groove, so as to form a state in which the jet pipe (4) continuously changes the angle of irrigation when in a rotating state; A second fixing ring (14) is fixedly provided on the outside of the main pipe (7) at a position opposite to the lower end of the jet pipe (4); The jet tube (4) comprises: A water inlet pipe (41), the lower end of which is rotatably mounted on a second fixing ring (14) via a torsion spring; A water outlet pipe (42), wherein the water outlet pipe (42) is arranged at the upper end of the water inlet pipe (41), and the plurality of water outlet pipes (42) have different inclination angles; A spray head (43), wherein the spray head (43) is arranged at the upper end of the water outlet pipe (42); It also comprises a shifting ring assembly (9), which is used to drive the adjusting ring (6) to intermittently rotate along the center of the outer shell (3), so that the adjusting ring (6) can continuously adjust the positions of the concave portion (601) and the convex portion (602) relative to the same irrigation area.

2. A forestry seedling water-saving irrigation device according to claim 1, characterized in that: The housing (3) comprises a bottom housing (33), a middle housing (32) and a top housing (31) which are arranged in sequence from bottom to top; The adjusting ring (6) is rotatably assembled on the upper end of the top shell (31), and a rotation damper is arranged between the adjusting ring (6) and the top shell (31); The transfer ring assembly (9) comprises: A first gear (95), the first gear (95) being rotatably mounted on one side of the top shell (31) via a bracket (96); A driven gear (94), the driven gear (94) being fixedly mounted on the outer surface of the top shell (31) and meshing with the lower portion of the first gear (95); an arc-shaped toothed plate (93), a fixing ring (91) being fixedly disposed at the upper end of the main pipe (7), the arc-shaped toothed plate (93) being fixedly disposed on one side of the first gear (95) via a connecting rod (92) and meshing with the upper portion of the first gear (95); The lower end surface of the adjustment ring (6) is provided with a guide slot (61), and the upper end surface of the top shell (31) is provided with an integrated guide track (311).

3. A forestry seedling water-saving irrigation device according to claim 2, characterized in that: The outer shell (3) comprises a bottom shell (33) and a middle shell (32) which are arranged in sequence from bottom to top, and a lower extension portion (62) is provided at the lower end of the adjustment ring (6); The transfer ring assembly (9) comprises: An inner tooth portion (99), wherein the inner tooth portion (99) is disposed on the inner surface of the lower extension portion (62); An external tooth portion (97), wherein the external tooth portion (97) is arranged on the outer surface of the second fixing ring (14); a second gear (98), the second gear (98) being rotatably mounted on the middle shell (32), and the second gear (98) being located between the second fixing ring (14) and the inner gear portion (99); A wrapping portion (63) is provided at the lower end of the lower extension portion (62), and the wrapping portion (63) is located at the periphery of the middle shell (32). An inner wall of the wrapping portion (63) is provided with an inner concave annular groove (631), and an outer wall of the middle shell (32) is provided with an outer convex ring (323) adapted to the inner concave annular groove (631).

4. A forestry seedling water-saving irrigation device according to claim 3, characterized in that: The inner wall of the middle shell (32) is fixedly provided with a limiting spoke (321), the main pipe (7) is rotatably arranged in the middle of the limiting spoke (321), a partition plate (322) is fixedly provided at the upper end of the middle shell (32) to block the upper end of the middle shell (32), and the main pipe (7) passes through the partition plate (322); The portion of the main pipe (7) located inside the middle shell (32) is configured as a narrow portion (71), and an integral absorption pipe (72) is provided on the outer surface of the narrow portion (71) so that the absorption pipe (72) absorbs liquid from the bottom shell (33) to rotate the water wheel (11).

5. A forestry seedling water-saving irrigation device according to claim 4, characterized in that: The lower end of the bottom shell (33) is threadedly connected to a joint (1), the lower end of the joint (1) is fixedly provided with a support pipe (17), and the lower end of the support pipe (17) is fixedly connected to the water distribution pipe (16).

6. A forestry seedling water-saving irrigation device according to claim 5, characterized in that: An integral receiving bucket (2) is provided on the outside of the joint (1); A venturi tube (12) is rotatably provided at the lower end of the main pipe (7), a return water suction pipe (13) is fixedly provided on one side of the venturi tube (12), and the other end of the return water suction pipe (13) passes through the bottom shell (33) and is then sucked into the receiving bucket (2).

7. An irrigation method using the forestry seedling water-saving irrigation device according to any one of claims 4 to 6, characterized in that: The following steps are involved: S1, controlling the water flow at the water source position to pass through the water distribution pipe (16) and the support pipe (17) and enter the bottom shell (33); S2. The water flow entering the bottom shell (33) can enter the main pipe (7) and then be ejected from the jet pipe (4). When the water in the main pipe (7) passes through the narrow portion (71), negative pressure is formed at the absorption pipe (72), so that the absorption pipe (72) absorbs the water in the bottom shell (33), so that the water flow around the water wheel (11) drives the water wheel (11) to rotate, and the water wheel (11) drives the water wheel (11) and the components thereon to rotate, so as to form a jet pipe (4) in a rotating state. The rotating jet pipe (4) can adjust its own angle along the concave portion (601) and the convex portion (602) of the slope groove, so as to realize multi-angle rotation irrigation.

8. A forestry seedling water-saving irrigation method according to claim 7, characterized in that: In S2, when the main pipe (7) rotates, the adjusting ring (6) is driven to rotate intermittently along the center of the circle of the outer shell (3), so that the adjusting ring (6) can continuously adjust the positions of the concave portion (601) and the convex portion (602) relative to the same irrigation area, so that different areas are irrigated when the same jet pipe (4) reaches the same position of the slope groove.

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