A fertilizing device with adjustable fertilizing depth for cotton cultivation
By designing a fertilizer application device with depth adjustment and quantitative structure, the problem of uneven fertilization in cotton planting has been solved, achieving precise control of fertilizer amount and depth, and improving operational efficiency and equipment applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DUNHUANG TOYOTA AGRICULTURAL SCIENCE & TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-21
AI Technical Summary
Existing technologies cannot precisely control the amount of fertilizer applied to individual plants in cotton cultivation, resulting in uneven fertilization, resource waste, environmental pollution, and affecting the uniform growth of crops.
A fertilization device including a depth adjustment structure and a quantitative structure was designed. Through the sliding connection of the connecting cylinder, the insertion part and the fertilizer storage bin, the fertilization depth and amount can be precisely controlled. Combined with the cooperation of the locking rod, the locking groove and the spring, the accuracy of the fertilization amount and depth is ensured.
It enables precise control of fertilizer application, adapts to the needs of cotton at different growth stages, improves operational efficiency and equipment applicability, prevents soil clogging, and ensures the accuracy and stability of each fertilization.
Smart Images

Figure CN224521756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural planting, and in particular to a fertilizer application device for cotton cultivation with adjustable fertilization depth. Background Technology
[0002] In cotton cultivation, scientific fertilization is key to ensuring high yield and quality. Base fertilizer should primarily consist of organic fertilizer and phosphorus and potassium fertilizer to promote root development; nitrogen fertilizer should be applied promptly during the budding and boll-forming stages to meet the needs of vigorous plant growth and boll formation. Rational fertilization can significantly improve cotton yield and fiber quality.
[0003] Current technologies mostly employ soil-insertion fertilization; however, this method generally suffers from the inability to precisely control the amount of fertilizer applied to individual plants. This easily leads to uneven fertilization, resulting in resource waste, environmental pollution, and hindering uniform crop growth. Utility Model Content
[0004] The present invention aims to provide a fertilization device with adjustable fertilization depth for cotton cultivation, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A fertilizer application device for cotton cultivation with adjustable fertilization depth includes a connecting cylinder, which is slidably connected to a depth adjustment structure and a metering structure, and is rotatably connected to an insertion part. The connecting cylinder is connected to a fertilizer storage bin, and the fertilizer storage bin is connected to a feed inlet.
[0007] The quantitative structure includes a slide rod that passes through the side wall of the connecting cylinder and is slidably connected to the connecting cylinder. The slide rod is connected to a quantitative cup, and the quantitative cup is rotatably connected to a bottom cover. A baffle is connected to the inner wall of the connecting cylinder. The fertilizer storage bin is funnel-shaped and is connected to a fixed material cylinder. The fixed material cylinder is matched in size with the quantitative cup.
[0008] Preferably, the depth adjustment structure includes a foot pedal, the connecting cylinder has a sliding cavity, a sliding cylinder is slidably connected to the inner wall of the sliding cavity, the sliding cylinder is connected to two locking rods, the locking rods are connected to the foot pedal, the side wall of the sliding cavity has a locking groove, and the locking rods and locking grooves cooperate to adjust the fertilization depth.
[0009] Preferably, the insertion part includes a sleeve, and the connecting sleeve is rotatably connected to a first insertion piece and a second insertion piece. The first insertion piece is connected to the sleeve, and the second insertion piece is connected to a connecting rod. The connecting rod is slidably connected to the inner wall of the sleeve, and the connecting rod and the inner wall of the first insertion piece are connected together to a third spring. The openings of the second insertion piece and the first insertion piece form a discharge port.
[0010] Preferably, the feed cylinder and the metering cup are respectively connected to limit baffles, and the two limit baffles are slidably connected.
[0011] Preferably, the inner wall of the sliding cavity and the sliding cylinder are both connected to a second spring.
[0012] Preferably, the slide bar is connected to two limiting rings, and the metering cup and the inner wall of the connecting cylinder are connected together by a first spring.
[0013] The beneficial effects of this technical solution compared to existing technologies are as follows:
[0014] (1) Through the clever combination of fertilizer storage bin, fixed material cylinder and quantitative structure, it realizes the precise control of fertilizer application. The quantitative cup can reliably measure a fixed amount of fertilizer and automatically open the bottom cover through the baffle to complete the fertilizer discharge when sliding horizontally, which effectively solves the problems of uneven application and serious waste in traditional hole application.
[0015] (2) By adjusting the position of the foot pedal through the cooperation of the depth adjustment structure, locking rod and locking groove, the fertilization depth can be adjusted. Users can easily and quickly adjust and lock the depth of penetration into the soil through the foot pedal, so as to adapt to the different needs of fertilization depth at different growth stages of cotton. The operation is simple and labor-saving, which significantly improves the applicability and work efficiency of the equipment.
[0016] (3) The insertion part keeps the first and second insertion plates closed during the insertion process, forming a sharp head to reduce the resistance to soil entry and effectively prevent soil from clogging the outlet. When the equipment is pulled out, the insertion plates automatically open under the action of the third spring, ensuring that the fertilizer can be applied smoothly and accurately to the required soil depth, achieving the effect of "closing when entering the soil and opening when exiting the soil".
[0017] (4) The limiting baffle that slides between the fixed material cylinder and the metering cup serves as a guide, ensuring the stability of the metering cup when it moves horizontally. On the other hand, when the metering cup moves horizontally and is misaligned with the fixed material cylinder, it can promptly block the lower opening of the fixed material cylinder, effectively preventing continuous leakage of fertilizer and ensuring the accuracy of each dispensing.
[0018] (5) The second spring connecting the sliding cavity and the slide cylinder provides an automatic reset force for the depth adjustment structure. After the locking rod and the locking groove are released, it can assist the slide cylinder and foot pedal to quickly reset, making the operation smoother and more convenient, and improving the user experience.
[0019] (6) The two limit rings on the slide bar precisely limit the horizontal stroke of the metering cup, ensuring that the material taking and discharging actions are accurate; while the first spring can provide a stable reset force for the metering cup, ensuring that the metering structure can automatically reset after each material taking, preparing for the next precise fertilization, making the equipment working cycle more reliable. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 A longitudinal sectional view of the quantitative structure provided by this utility model;
[0022] Figure 3 A longitudinal sectional view of the quantitative structure provided by this utility model;
[0023] Figure 4 Longitudinal sectional view of the depth adjustment structure provided by this utility model;
[0024] Figure 5 A three-dimensional structural diagram of the slide provided by this utility model;
[0025] Figure 6 A longitudinal sectional view of the insertion part provided by this utility model;
[0026] Reference numerals in the attached drawings: 1. Connecting cylinder; 2. Fertilizer storage bin; 3. Quantitative structure; 4. Feed inlet; 5. Depth adjustment structure; 6. Insertion part; 7. Discharge outlet; 8. Slide rod; 9. Fixed material cylinder; 10. Baffle; 11. Bottom cover; 12. Limiting baffle; 13. Quantitative cup; 14. First spring; 15. Limiting ring; 16. Sliding cavity; 17. Locking groove; 18. Foot pedal; 19. Locking rod; 20. Slide cylinder; 21. Second spring; 22. First insertion piece; 23. Second insertion piece; 24. Connecting rod; 25. Sleeve; 26. Third spring. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0028] like Figures 1 to 6 A fertilizer application device for cotton cultivation with adjustable fertilization depth, including a connecting cylinder 1, such as... Figure 1 As shown, the lower end of the connecting cylinder 1 is slidably connected to a depth adjustment structure 5, the top end of the connecting cylinder 1 is slidably connected to a quantitative structure 3, the bottom of the connecting cylinder 1 is rotatably connected to an insertion part 6, the top of the connecting cylinder 1 is connected to a fertilizer storage bin 2, and the top of the fertilizer storage bin 2 is connected to a feed inlet 4.
[0029] like Figure 2 and Figure 3As shown, the quantitative structure 3 includes a slide rod 8, which passes through the side wall of the connecting cylinder 1 and is slidably connected to the connecting cylinder 1. A quantitative cup 13 is connected to the left side of the slide rod 8, and a bottom cover 11 is rotatably connected to the bottom of the quantitative cup 13. The bottom of the fertilizer storage bin 2 is funnel-shaped, and a fixed material cylinder 9 is connected to the bottom of the fertilizer storage bin 2. The fixed material cylinder 9 is matched in size with the quantitative cup 13. A baffle 10 is connected to the inner wall of the connecting cylinder 1, and the end of the baffle 10 is located below the fixed material cylinder 9. The quantitative cup 13 is located directly below the fixed material cylinder 9 to receive fertilizer, completing precise material dispensing. Pushing the slide rod 8 to the left causes the bottom cover 11 of the quantitative cup 13 to disengage from the baffle 10. Under the action of gravity, the bottom cover 11 rotates counterclockwise around the axis, opening the bottom of the quantitative cup 13, and the fertilizer falls from the bottom, completing fertilizer discharge. During the resetting process of the slide rod 8, the baffle 10 blocks the bottom cover 11, causing the bottom cover 11 to rotate clockwise until it is completely closed, preparing for the next material dispensing.
[0030] like Figure 4 and Figure 5 As shown, the depth adjustment structure 5 includes a foot pedal 18, a sliding cavity 16 on the connecting cylinder 1, a sliding cylinder 20 slidably connected to the inner wall of the sliding cavity 16, and two locking rods 19 connected to the sliding cylinder 20. The locking rods 19 are connected to the foot pedal 18, and a locking groove 17 is provided on the side wall of the sliding cavity 16, with the locking rods 19 engaging with the locking groove 17. By stepping on the foot pedal 18, the insertion part 6 of the device is inserted into the soil. By adjusting and locking the height of the locking rods 19 in the locking groove 17, different fertilization depths can be achieved and fixed, thereby adapting to the root distribution of cotton at different growth stages.
[0031] like Figure 6 As shown, the insertion part 6 includes a sleeve 25. A first insertion plate 22 and a second insertion plate 23 are rotatably connected to the bottom of the connecting sleeve 1. The first insertion plate 22 is connected to the sleeve 25, and the second insertion plate 23 is connected to a connecting rod 24. The connecting rod 24 is slidably connected to the inner wall of the sleeve 25. The diameter of the connecting rod 24 is smaller than the inner diameter of the sleeve 25. A third spring 26 is connected to both the connecting rod 24 and the inner wall of the first insertion plate 22. The openings of the second insertion plate 23 and the first insertion plate 22 form a discharge port 7 that can be closed and automatically opened. When downward pressure is applied, the first insertion plate 22 and the second insertion plate 23 close to form a sharp head, which facilitates cutting into the soil and prevents blockage. When the device is lifted upward, under the restoring force of the third spring 26, the connecting rod 24 drives the second insertion plate 23 to move downward, causing the first insertion plate 22 and the second insertion plate 23 to rotate relative to each other around the pivot. The discharge port 7 automatically opens, and the fertilizer is smoothly discharged to the target soil layer.
[0032] like Figure 2 As shown, the bottom of the feed cylinder 9 and the top of the metering cup 13 are respectively connected to limit baffles 12. The two limit baffles 12 are slidably connected and serve as guides and seals.
[0033] like Figure 4As shown, the inner wall of the sliding cavity 16 and the slide cylinder 20 are connected to a second spring 21, which assists the slide cylinder and foot pedal to quickly reset, making the operation smoother and more convenient, and improving the user experience.
[0034] like Figure 2 As shown, the slide bar 8 is connected to two limiting rings 15, which are located on the inner and outer sides of the connecting cylinder 1 respectively, and are used to precisely limit the stroke of the slide bar 8; the right side wall of the metering cup 13 and the inner wall of the connecting cylinder 1 are connected to a first spring 14, which provides automatic reset power for the metering structure 3.
[0035] The specific implementation process is as follows:
[0036] Before fertilization, fertilizer is first added to the fertilizer storage bin 2 through the feed inlet 4. The fertilizer is collected in the fixed feed cylinder 9 through the funnel-shaped bottom of the bin, and then the metering cup 13 is filled. According to the required fertilization depth of the cotton roots, the user steps on the foot pedal 18, and through the cooperation of the locking rod 19 and the locking groove 17, adjusts and locks the position of the sliding cylinder 20 in the sliding cavity 16, thereby setting the distance from the piercing part 6 to the foot pedal 18, i.e., the depth of penetration into the soil. During fertilization, the device is pressed vertically down, and the first piercing plate 22 and the second piercing plate 23 remain closed under the action of soil resistance, forming a sharp head that penetrates into the soil to the predetermined depth. Then, the operator pushes the sliding rod 8 inward, causing the metering cup 13 to move horizontally. When the bottom cover 11 of the metering cup 13 disengages from the baffle 10, the bottom cover 11 automatically opens under the action of gravity, and the fertilizer falls into the deep soil through the discharge port 7. After releasing the slide bar 8, the metering cup 13 returns to its original position under the elastic force of the first spring 14. During this process, the baffle 10 pushes the bottom cover 11 back to the closed state. Finally, when the device is lifted and the insertion part 6 leaves the soil, the first insertion plate 22 and the second insertion plate 23 automatically open under the action of the third spring 26, ensuring that the discharge port 7 is completely unobstructed, preparing for the next operation. Throughout the process, the limiting ring 15 precisely limits the stroke of the slide bar 8, the limiting baffle 12 ensures the stability and sealing of the movement of the metering cup 13, and the second spring 21 ensures the smooth reset of the depth adjustment structure 5.
[0037] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A fertilizer application device with adjustable fertilization depth for cotton cultivation, characterized in that: Includes a connecting cylinder (1), the connecting cylinder (1) is slidably connected to a depth adjustment structure (5) and a metering structure (3), the connecting cylinder (1) is rotatably connected to an insertion part (6), the connecting cylinder (1) is connected to a fertilizer storage bin (2), and the fertilizer storage bin (2) is connected to a feed inlet (4); The quantitative structure (3) includes a slide rod (8), which passes through the side wall of the connecting cylinder (1) and is slidably connected to the connecting cylinder (1). The slide rod (8) is connected to a quantitative cup (13), which is rotatably connected to a bottom cover (11). A baffle (10) is connected to the inner wall of the connecting cylinder (1). The fertilizer storage bin (2) is funnel-shaped and is connected to a fixed material cylinder (9). The fixed material cylinder (9) is matched in size with the quantitative cup (13).
2. The fertilization equipment for cotton cultivation with adjustable fertilization depth as described in claim 1, characterized in that: The depth adjustment structure (5) includes a foot pedal (18), the connecting cylinder (1) has a sliding cavity (16), the inner wall of the sliding cavity (16) is slidably connected to a slide cylinder (20), the slide cylinder (20) is connected to two locking rods (19), the locking rods (19) are connected to the foot pedal (18), the side wall of the sliding cavity (16) has a locking groove (17), and the locking rods (19) and the locking grooves (17) cooperate to adjust the fertilization depth.
3. The fertilization equipment for cotton cultivation with adjustable fertilization depth as described in claim 1, characterized in that: The insertion part (6) includes a sleeve (25). The connecting sleeve (1) is rotatably connected to a first insertion piece (22) and a second insertion piece (23). The first insertion piece (22) is connected to the sleeve (25). The second insertion piece (23) is connected to a connecting rod (24). The connecting rod (24) is slidably connected to the inner wall of the sleeve (25). The connecting rod (24) and the inner wall of the first insertion piece (22) are connected together to a third spring (26). The openings of the second insertion piece (23) and the first insertion piece (22) form an outlet (7).
4. The fertilization equipment for cotton cultivation with adjustable fertilization depth as described in claim 1, characterized in that: The feed cylinder (9) and the metering cup (13) are respectively connected to limit baffles (12), and the two limit baffles (12) are slidably connected.
5. The fertilization equipment for cotton cultivation with adjustable fertilization depth as described in claim 2, characterized in that: The inner wall of the sliding cavity (16) and the slide cylinder (20) are connected together by a second spring (21).
6. The fertilization equipment for cotton cultivation with adjustable fertilization depth as described in claim 1, characterized in that: The slide bar (8) is connected to two limiting rings (15), and the inner wall of the metering cup (13) and the connecting cylinder (1) are connected to a first spring (14).