A sprinkler for use in the irrigation of alfalfa crops

Abstract

The utility model discloses a kind of spray irrigation formula spray heads suitable for alfalfa growth, it is composed of lifting mechanism by driving motor, driving gear, rack and lifting rod, realize spray head longitudinal height accurate adjustment, adapt to the change of plant height of alfalfa seedling stage to flowering stage, reduce water evaporation and drift, solve the irrigation blind area and water resource waste problem caused by the height fixation of traditional device, improve water use efficiency. With the adjusting structure of lifting screw sleeve, driving rod, spherical rotating part, each spray head angle can be independently adjusted, and the through-hole design is used to ensure smooth flow of multi-angle water, the water spraying range can be adjusted according to root system area and plant density, to avoid over-irrigation or irrigation leakage. Through height and angle coordinated regulation, meet the irrigation demand of alfalfa seedling stage, regeneration period and other key growth periods, improve yield and quality.

Description

Technical Field

[0001] This utility model relates to the field of plant irrigation technology, specifically a sprinkler head suitable for alfalfa crop growth. Background Technology

[0002] As a high-quality forage, alfalfa has significant stage-specific water requirements during its growth process. There are obvious differences in plant height, canopy structure and root distribution at different growth stages (such as seedling stage, branching stage, flowering stage and regeneration stage after cutting), and the requirements for irrigation height, angle and range are different.

[0003] Currently, most sprinkler irrigation systems used for alfalfa cultivation are designed with a fixed height, making it impossible to adjust to the changing plant height at different growth stages. During the seedling stage, the excessively high nozzle height causes water to evaporate excessively in the air or drift due to wind, resulting in insufficient soil moisture around the roots. From the branching stage to the flowering stage, as the plant height increases, the fixed-height nozzles struggle to penetrate the dense canopy, leading to uneven water distribution between leaves and roots, creating irrigation blind spots. This not only wastes water resources but also negatively impacts alfalfa growth rate and yield.

[0004] Meanwhile, the spray angle of existing sprinkler heads is mostly fixed, which cannot be flexibly adjusted to areas with concentrated alfalfa roots or differences in plant density. In areas with shallow root distribution, the fixed spray angle can easily lead to insufficient water penetration; while in densely planted areas, the limited spray range may result in local over-irrigation or under-irrigation, making it difficult to meet the requirements of irrigation uniformity for complex terrain and plant type differences in large-scale alfalfa planting. Utility Model Content

[0005] The purpose of this invention is to provide a sprinkler head suitable for alfalfa crop growth, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: Compared with the prior art, the beneficial effects of this utility model are: 1. Achieve precise irrigation height adjustment to meet the needs of different alfalfa growth stages: By setting up a lifting mechanism consisting of a drive motor, drive gear, rack and pinion, and lifting rod, the vertical height of the sprinkler head can be flexibly adjusted according to the plant height changes at different growth stages of alfalfa, such as the seedling stage, branching stage, and flowering stage. When the alfalfa plant is short (such as in the seedling stage), the sprinkler head height is lowered to reduce water evaporation and drift; when the plant height increases (such as from branching to flowering stage), the sprinkler head height is raised to ensure that the water flow can penetrate the plant canopy and evenly cover the roots and leaves. This solves the problem of irrigation blind spots or water waste caused by the fixed height of traditional sprinkler irrigation devices, and improves water use efficiency.

[0007] 2. Multi-angle spray adjustment enhances irrigation uniformity and targeting: The nozzle adjustment structure, comprised of a lifting screw, drive rod, and spherical rotating component, allows for nozzle angle adjustment. Tightening the screw raises the lifting screw, which in turn pushes and pulls the nozzle to rotate around the spherical rotating component. The rotation of the spherical rotating component and its through-hole design ensure smooth water flow at multiple angles. This allows for increased spray angles in areas with concentrated alfalfa roots and adjustment of the lateral spray range based on plant density, avoiding localized over-irrigation or under-irrigation caused by traditional fixed-angle nozzles. It is particularly suitable for the complex terrain and plant type differences in large-scale alfalfa planting.

[0008] 3. Adapting to the Irrigation Needs of Alfalfa During Critical Growth Stages: Addressing the need for moist topsoil during the seedling stage and accelerated recovery during the regeneration stage, this device allows for precise control of irrigation intensity and range during critical growth periods through coordinated adjustment of height and angle. For example, during the regeneration stage after mowing, the nozzle height is lowered and the spray angle is reduced to concentrate water supply to the roots and promote new shoot growth; during the flowering stage, the height and angle are increased to balance the water needs of both leaves and roots. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a sprinkler head suitable for alfalfa crop growth according to the present invention; Figure 2 This is a schematic diagram of the main structure of a sprinkler head suitable for alfalfa crop growth according to the present invention. Figure 3 for Figure 2 Enlarged diagram of point A.

[0010] In the diagram: 1. Base, 2. Main pipe, 3. Connecting rod, 4. Bottom pipe, 401. Drive motor, 402. Drive gear, 403. Rack, 404. Lifting rod, 405. Limiting block, 406. Hemispherical mounting base, 407. Screw, 4071. Lifting screw sleeve, 408. Drive rod, 409. Nozzle, 410. Mounting groove, 411. Spherical rotating part, 412. Through hole. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1-3 This utility model provides a technical solution: like Figure 1As shown, to achieve flexible adjustment of irrigation height and nozzle angle, a sprinkler head suitable for alfalfa crop growth is proposed. It includes a base 1, which is annular in shape and fixed to the soil layer with fixing screws. During installation, a pit of the same height as the device is dug, and the base 1 is fixed to the soil layer with fixing screws. A connecting rod 3 is fixedly connected to and communicates with the inner wall of the base 1. The lower end of the connecting rod 3 is fixedly connected to the main pipe 2, and the two are connected. Water used for irrigation in the main pipe 2 can enter the base 1 through the connecting rod 3. It also includes: The lifting mechanism for adjusting the height of the irrigation device includes a base pipe 4 and a lifting rod 404. The upper surface of the base 1 is coaxially fixedly connected to the base pipe 4. The base pipe 4 has an annular cross-section. The base 1 is connected to the base pipe 4, allowing water in the base 1 to enter the base pipe 4. A drive motor 401 is installed on the base pipe 4. The drive motor 401 uses existing technology components. A drive gear 402 is coaxially fixed to the output shaft of the drive motor 401. The drive gear 402 meshes with a rack 403 on the surface of the lifting rod 404. Driven by the drive motor 401, the drive gear 402 drives the rack 403 to move up and down, thereby driving the lifting rod 404 vertically. The lifting rod 404 is longitudinally slidably installed inside the base pipe 4. The cross-section of the lifting rod 404 is also annular, allowing water in the base pipe 4 to enter the interior of the lifting rod 404. The outer diameter of the lifting rod 404 is smaller than that of the base pipe 4. Under the action of the drive gear 402 and the rack 403, the lifting rod 404 can slide longitudinally along the extension direction of the base pipe 4, thereby adjusting the overall height of the lifting rod 404 and the base pipe 4, and thus adjusting the height of the nozzle 409 on the lifting rod 404 as described below. A limiting block 405 is fixedly installed at the lower end of the lifting rod 404. The limiting block 405 contacts the inner wall of the upper end of the base pipe 4, thereby limiting the maximum movement distance of the lifting rod 404.

[0013] like Figure 2 , 3As shown, the nozzle adjustment structure for adjusting the water spray angle includes a lifting screw sleeve 4071, a nozzle 409, and a spherical rotating component 411. A hemispherical mounting base 406 is fixedly installed at the upper end of the lifting rod 404. The hemispherical mounting base 406 is used to install the lifting screw sleeve 4071, drive rod 408, and other components mentioned below. The lifting screw sleeve 4071 is longitudinally slidably installed inside the hemispherical mounting base 406. A screw rod 407 is threadedly connected to the inner wall of the lifting screw sleeve 4071. The upper end of the screw rod 407... Extending out of the hemispherical mounting base 406, the lifting sleeve 4071 can slide longitudinally within the hemispherical mounting base 406 by turning the screw 407. The screw 407 is provided with multiple insertion holes, and the hemispherical mounting base 406 is provided with corresponding insertion holes. When the lifting sleeve 4071 is raised to a suitable height, a pin is inserted into the insertion holes on the hemispherical mounting base 406 and the screw 407 to limit the height of the lifting sleeve 4071 and prevent it from falling freely under gravity.

[0014] The outer wall of the lifting screw sleeve 4071 is hinged to one end of several drive rods 408, and the other end of the drive rods 408 is hinged to the nozzle 409. When the lifting screw sleeve 4071 rises or falls, it can apply a pushing or pulling force to the drive rods 408. The pushing or pulling force on the drive rods 408 acts on the nozzle 409 to realize the rotation of the spherical rotating part 411 on the lifting rod 404 as described below. There are eight nozzles 409, which are arranged in a circumferentially equidistant manner on the hemispherical mounting base 406.

[0015] One end of each nozzle 409 is fixedly connected to a spherical rotating component 411. The nozzle 409 and the spherical rotating component 411 are connected and both are hollow components. Eight mounting slots 410 are equidistantly arranged on the surface of the lifting rod 404. A spherical rotating component 411 is rotatably installed in each mounting slot 410. A rubber gasket is fixedly installed in the mounting slot 410. By setting the rubber gasket, the friction between the mounting slot 410 and the spherical rotating component 411 can be increased, while the sealing performance of the mounting slot 410 can be improved.

[0016] Each spherical rotating component 411 has three through holes 412 fixed on one side. One side of the mounting groove 410 is connected to the lifting rod 404. The through holes 412 allow water in the lifting rod 404 to enter the spherical rotating component 411 and then into the nozzle 409. The three through holes 412 ensure that the water flow remains unobstructed regardless of how many degrees the spherical rotating component 411 rotates.

[0017] Working principle: First, dig a pit in the soil layer that is the same height as the device. Fix the base 1 in the soil layer with fixing screws. The water used for irrigation in the main pipe 2 can enter the base 1 through the connecting rod 3.

[0018] When faced with irrigation needs for alfalfa crops of different heights, the drive motor 401 is turned on, which drives the drive gear 402 to rotate. The drive gear 402 drives the rack 403 to move up and down, which in turn drives the lifting rod 404 to slide longitudinally. Under the action of the drive gear 402 and the rack 403, the lifting rod 404 can slide longitudinally along the extension direction of the bottom pipe 4, thereby adjusting the overall height of the lifting rod 404 and the bottom pipe 4.

[0019] Subsequently, the spray angle of the sprinkler head is adjusted according to the irrigation needs. By manually rotating the screw 407, the screw 407 can make the lifting sleeve 4071 slide longitudinally within the hemispherical mounting base 406. When the lifting sleeve 4071 rises or falls, it can apply a pushing or pulling force to the drive rod 408. The pushing or pulling force on the drive rod 408 acts on the sprinkler head 409, so that the sprinkler head 409 rotates on the lifting rod 404. The sprinkler head 409 rotates on the mounting groove 410 through the spherical rotating part 411, thereby adjusting the angle between the sprinkler head 409 and the lifting rod 404, and thus adjusting the irrigation angle. After the angle is adjusted, the water in the main pipe 2 enters the base 1, the bottom pipe 4, and the lifting rod 404 in sequence. The water in the lifting rod 404 enters the spherical rotating part 411 through the mounting groove 410 and the through hole 412, and then enters the sprinkler head 409, and is finally sprayed out by the sprinkler head 409.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sprinkler head suitable for alfalfa crop growth, comprising a base (1), characterized in that: Also includes: Lifting mechanism: includes a base tube (4) and a lifting rod (404). The base tube (4) is fixedly connected to the base (1) and the two are connected. A drive motor (401) is fixedly installed inside the base tube (4). A drive gear (402) is fixedly fixed on the output shaft of the drive motor (401). The drive gear (402) meshes with the rack (403) on the surface of the lifting rod (404). The lifting rod (404) is longitudinally slidably installed inside the base tube (4). The rack (403) is fixedly installed on the outer wall of the lifting rod (404). Under the action of the drive gear (402), the lifting rod (404) can slide along the extension direction of the base tube (4). The nozzle adjustment structure includes a lifting screw sleeve (4071), a nozzle (409), and a spherical rotating component (411). A hemispherical mounting base (406) is fixedly installed on the upper end of the lifting rod (404). The lifting screw sleeve (4071) is slidably installed in the hemispherical mounting base (406). A screw rod (407) is screwed to the inner wall of the lifting screw sleeve (4071). Several driving rods (408) are hinged to one end of the outer wall of the lifting screw sleeve (4071). The other end of the driving rods (408) is hinged to the nozzle (409). The nozzle (409) is fixedly connected to the surface of the spherical rotating component (411). The spherical rotating component (411) is rotatably installed on the surface of the lifting rod (404). Several through holes (412) are provided on the spherical rotating component (411). The spherical rotating component (411) and the lifting rod (404) can be connected through the through holes (412).

2. The sprinkler head suitable for alfalfa crop growth according to claim 1, characterized in that: The base (1) is fixed in the soil by fixing screws. The base (1) is fixedly connected to the connecting rod (3) and connected to the connecting rod (3). The lower end of the connecting rod (3) is fixedly connected to the main pipe (2) and the two are connected.

3. The sprinkler head suitable for alfalfa crop growth according to claim 1, characterized in that: The lifting rod (404) and the bottom tube (4) are both hollow tubes and are connected to each other.

4. A sprinkler head suitable for alfalfa crop growth according to claim 1, characterized in that: There are eight nozzles (409), which are arranged equidistantly on a hemispherical mounting base (406).

5. A sprinkler head suitable for alfalfa crop growth according to claim 1, characterized in that: The lifting rod (404) has eight mounting slots (410) evenly spaced on its surface. A spherical rotating part (411) is rotatably installed in each mounting slot (410). A rubber washer is fixedly installed in the mounting slot (410).

6. A sprinkler head suitable for alfalfa crop growth according to claim 5, characterized in that: Three through holes (412) are fixedly provided on one side of the spherical rotating part (411).

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