Fungicide soil injector with adjustable needle head spacing
By using multiple adjustable-spacing needles and a sliding rail positioning system, the problem of single-spot injection in existing soil injectors has been solved, enabling simultaneous injection of multiple crops and improving the equipment's versatility and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI AGRICULTURAL UNIVERSITY
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
Smart Images

Figure CN224124655U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil injector technology, specifically a microbial agent soil injector with adjustable needle spacing. Background Technology
[0002] In agricultural production and related scientific research, soil treatment is often required, such as targeted and quantitative fertilization of crop roots, soil fumigation and disinfection, and root disease inoculation. These processes typically require a soil injector to apply appropriate agents to the crop roots at specific points and in precise quantities.
[0003] Patent CN201515603U discloses an adjustable soil injector, which can be widely used in agriculture and related research fields. This adjustable soil injector uses the relative motion of a cylinder and piston to deliver the liquid medicine from the medicine tank into the cylinder through an infusion tube, and then discharges the liquid medicine to the crop roots through an injection needle inserted into the ground. It has a simple structure and is easy to operate.
[0004] In crop cultivation, multiple rows are typically planted together; similarly, root injection is not performed on a single plant or row, but on multiple plants and rows. However, the aforementioned soil injector only has one needle, meaning it can only inject one crop at a time, failing to achieve the goal of injecting multiple plants simultaneously, thus prolonging the work time. Therefore, to address this issue, workers usually arrange multiple needles side-by-side on a needle plate. However, in actual use, the planting spacing varies depending on the crop variety, such as tomatoes and soybeans. To address this varying planting spacing, workers use different needle plates. This method requires creating a separate needle plate for each crop, increasing planting costs, and therefore urgently needs a solution. Utility Model Content
[0005] To avoid and overcome the technical problems existing in the prior art, this utility model provides a soil injector for inoculants with adjustable needle spacing. By using multiple adjustable-spacing needles, this utility model can simultaneously inject multiple crops, greatly improving work efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An adjustable needle spacing microbial agent soil injector includes an adjustable soil injector and a mounting base installed at the bottom of a depth-adjusting chassis in the adjustable soil injector. The mounting base is equipped with a slide rail, and multiple sliding seats that can move away from or closer to each other according to the crop spacing are mounted on the slide rail. Each sliding seat is equipped with a positioning part that locks its position on the slide rail. Each sliding seat is equipped with a needle, and each needle is connected to the cylinder in the adjustable soil injector.
[0008] As a further embodiment of this utility model: the slide is U-shaped, and the slide rail is located in the U-shaped cavity of the slide; a positioning screw hole for the axial vertical slide rail is opened on one arm of the slide, and a positioning bolt is threaded into the positioning screw hole. The front end of the positioning bolt is pressed against the slide rail to fix the slide on the slide rail.
[0009] As a further improvement of this utility model: a positioning groove is provided on the surface where the slide rail and the positioning bolt abut against each other, and the front end of the positioning bolt extends into and is pressed against the positioning groove.
[0010] As a further improvement of this utility model, the length direction of the positioning groove coincides with the length direction of the slide rail.
[0011] As a further improvement of this utility model, the positioning screw hole, the positioning bolt and the positioning groove cooperate with each other to form the positioning part.
[0012] As a further improvement of this utility model: a diverter pipe is also installed on the mounting base, and the diverter pipe is connected to the cylinder through the main pipe; multiple switchable branch pipes are also connected to the diverter pipe, and each branch pipe is connected to the corresponding needle.
[0013] As a further improvement of this utility model, the length direction of the diverter tube is parallel to the length direction of the slide rail.
[0014] As a further improvement of this utility model, each branch tube and its corresponding needle are connected to each other via a flexible tube.
[0015] As a further improvement of this utility model, the mounting base is fixed to the depth adjuster chassis by welding or bolt connection.
[0016] As a further improvement of this utility model, multiple side holes are provided on the side of the tip of the needle.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. By installing slide rails on the mounting base, multiple slide blocks can flexibly move closer or further apart according to the crop spacing. The positioning parts on the slide blocks can securely lock them in any position on the slide rail, thus precisely adjusting the needle spacing. This perfectly adapts to the planting layout of various crops, effectively improving the versatility and practicality of the equipment. The interconnected design of the depth-adjustable chassis, mounting base, slide rails, slide blocks, and needles and cylinder forms an organic and compact whole. The coordinated operation of all components ensures the stability of the equipment and lays a solid foundation for further structural optimization and performance improvement in subsequent claims.
[0019] 2. The U-shaped cavity of the slide block can stably accommodate the slide rail, ensuring smooth movement of the slide block on the slide rail while maintaining good stability. By opening positioning screw holes on the slide block arm and using positioning bolts, operators can easily fix the slide block at any position on the slide rail by simply turning the bolts. The operation is simple and easy to understand, requiring no complicated tools, which greatly improves the convenience and flexibility of spacing adjustment.
[0020] 3. The front end of the positioning bolt can precisely extend into the positioning groove and tighten, increasing friction and positioning accuracy compared to ordinary flat contact. Even in complex working environments, the slide can be firmly fixed in the set position, avoiding positional displacement due to vibration or external force, ensuring the stability of the needle spacing, and providing a reliable guarantee for precise operation.
[0021] 4. The length of the positioning groove coincides with the length of the slide rail, so that no matter where the slide is adjusted, the positioning bolt can find the corresponding positioning groove position for fixing. There will be no situation where the positioning groove position is limited and cannot be fixed, which greatly expands the adjustable range of the slide and improves the adaptability of the equipment to different crop spacing.
[0022] 5. The positioning part, consisting of positioning screw holes, positioning bolts, and positioning grooves working together, is not only compact and easy to manufacture and maintain, but also provides precise positioning and convenient operation. The three components work in concert to ensure the slide block is firmly fixed on the slide rail from different angles, laying a solid foundation for the reliable operation of the entire soil injector.
[0023] 6. The mounting base is equipped with a distribution tube, which connects to the cylinder via a main pipe. Multiple switchable branch tubes are connected to the distribution tubes and then to the needles. This design achieves efficient drug distribution. By controlling the opening and closing of the branch tubes, it is possible to flexibly determine which needles to supply the drug to, thus enabling targeted injection operations based on the actual crop distribution. This avoids drug waste, improves resource utilization, and enhances operational accuracy.
[0024] 7. The length of the diverter tube is parallel to the length of the slide rail, making the entire device structure more compact and rational. On the one hand, it facilitates the connection and installation between various components and reduces space occupation; on the other hand, it makes the flow path of the liquid in the diverter tube smoother, which is conducive to improving the liquid supply efficiency and ensuring that each needle can obtain the liquid evenly and stably.
[0025] 8. Each branch tube is connected to the needle via a flexible tube. The flexible tube can adapt to the positional changes of the needle during the adjustment of the spacing, avoiding blockage or damage caused by rigid tube connections. At the same time, the flexible tube has a certain degree of flexibility, which can buffer the impact of vibration or collision during operation, protect the internal piping system of the equipment, and extend the service life of the equipment.
[0026] 9. The mounting base is fixed to the depth adjuster chassis using either welding or bolting, providing a variety of reliable installation options. Welding ensures the connection strength between the mounting base and the chassis, making it suitable for operation scenarios with high stability requirements; bolting facilitates disassembly and maintenance of the equipment, allowing for quick and convenient operation when maintenance or component replacement is needed, thus improving the maintainability of the equipment.
[0027] 10. Multiple side holes are created on the side of the needle tip, changing the way the medicine is injected. Traditional needles mostly dispense the medicine from the front end, while the side hole design allows the medicine to be injected evenly into the soil from multiple directions, expanding the diffusion range of the medicine and improving the soil's absorption of the medicine. At the same time, the side holes can effectively prevent injection obstruction caused by soil clogging of the front outlet, improving the applicability of the equipment in complex soil environments. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model.
[0029] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.
[0030] Figure 3 This is a cross-sectional structural diagram of the slide rail in this utility model.
[0031] In the diagram: 10. Bottom of the depth adjustment chassis; 20. Mounting base; 21. Slide rail; 211. Positioning groove; 22. Slide block; 221. Positioning screw hole; 222. Positioning bolt; 23. Diverter pipe; 231. Branch pipe; 232. Main pipe; 233. Flexible hose; 30. Needle; 31. Side hole. Detailed Implementation
[0032] 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.
[0033] Please see Figures 1-3 This utility model is an improvement upon patent CN201515603U, specifically by installing multiple adjustable-spaced needles 30 at the bottom of the depth-adjusting base 10 in the adjustable soil injector, thus forming the overall structure of this utility model. When installing the base, it can be fixed to the depth adjuster base by welding or bolting.
[0034] During use, the operator loosens the positioning bolts 222 on the slide block 22 according to the actual planting spacing of the crops, allowing the slide block 22 to slide freely on the slide rail 21. Each slide block 22 is moved to a suitable position so that the spacing of the needles 30 matches the crop spacing. Then, the positioning bolts 222 are tightened so that the front end of the positioning bolt 222 extends into and presses against the positioning groove 211 of the slide rail 21, thus fixing the slide block 22 onto the slide rail 21.
[0035] The liquid medicine is injected into the cylinder of the adjustable soil injector, and then delivered to the branch tube 23 through the main tube 232. Depending on which crops need to be injected, the corresponding branch tube 231 is opened, and the liquid medicine is delivered through the branch tube 231 and the flexible tube 233 to the corresponding needle 30, and then injected into the soil through the side hole 31 on the needle 30.
[0036] If maintenance or replacement of parts is required, for mounting bases 20 that are fixed by bolts, the bolts can be unscrewed to remove the mounting base 20 from the depth adjuster chassis; for mounting bases 20 that are fixed by welding, corresponding welding repair operations can be performed.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A soil injector for bacterial inoculants with adjustable needle spacing, characterized in that, The device includes an adjustable soil injector and a mounting base (20) at the bottom of a depth-adjusting chassis (10) installed in the adjustable soil injector. A slide rail (21) is mounted on the mounting base (20). Multiple sliding seats (22) are mounted on the slide rail (21) and can move away from or closer to each other according to the crop spacing. Each sliding seat (22) is equipped with a positioning part that locks its position on the slide rail (21). Each sliding seat (22) is equipped with a needle (30), and each needle (30) is connected to the cylinder in the adjustable soil injector.
2. The bacteria soil injector with adjustable needle spacing according to claim 1, wherein, The slide (22) is U-shaped, and the slide rail (21) is located in the U-shaped cavity of the slide (22). A positioning screw hole (221) for the axial vertical slide rail (21) is provided on one arm of the slide (22). A positioning bolt (222) is threaded in the positioning screw hole (221). The front end of the positioning bolt (222) is pressed against the slide rail (21) to fix the slide (22) on the slide rail (21).
3. The soil injector with adjustable needle spacing for bacterial agents according to claim 2, characterized in that, A positioning groove (211) is provided on the surface where the slide rail (21) and the positioning bolt (222) abut against each other, and the front end of the positioning bolt (222) extends into and is pressed against the positioning groove (211).
4. The bacteria soil injector with adjustable needle spacing according to claim 3, wherein, The length direction of the positioning groove (211) coincides with the length direction of the slide rail (21).
5. The bacteria soil injector with adjustable needle spacing according to claim 4, wherein, The positioning screw hole (221), positioning bolt (222) and positioning groove (211) cooperate with each other to form the positioning part.
6. The adjustable needle spacing inoculant soil injector of any one of claims 1-5, wherein, The mounting base (20) is also equipped with a shunt pipe (23), which is connected to the cylinder via the main pipe (232); the shunt pipe (23) is also connected to multiple switchable branch pipes (231), and each branch pipe (231) is connected to the corresponding needle (30).
7. A soil injector with adjustable needle spacing for bacterial agents according to claim 6, characterized in that, The length direction of the diverter (23) is parallel to the length direction of the slide rail (21).
8. The bacteria soil injector with adjustable needle spacing according to claim 7, wherein, Each branch tube (231) and the corresponding needle (30) are connected to each other through a flexible tube (233).
9. The adjustable needle spacing soil inoculant injector of claim 8, wherein, The mounting base (20) is fixed to the depth adjuster chassis by welding or bolting.
10. The bacteria soil injector with adjustable needle spacing according to claim 9, wherein, Multiple side holes (31) are provided on the side of the tip of the needle (30).
Citation Information
Patent Citations
Adjustable soil injector
CN201515603U