Precise shallow fertilization needle inserting device

Abstract

The invention discloses a precise shallow fertilization needle inserting device which comprises a feeding shaft body which is used for being connected with an external support and is provided with an inner channel, an inner circle container which is arranged on the feeding shaft body in a sleeving mode and is used for containing fertilizer, and a ring body supporting frame which is rotationally arranged on the feeding shaft body. The outer ring container is arranged on the ring body supporting frame and corresponds to the ring wall of the inner ring container, the inserting needle heads are evenly distributed on the radial outer wall of the outer ring container in a circumferential mode, one end of the conveying channel is fixedly connected to the inner ring container, and the other end of the conveying channel is movably connected to the outer ring container. And the feeding shaft body is externally connected with an air pressure power source and a fertilizer tank through pipelines respectively. Fertilizer supply is carried out on the built-in inner circular container through the feeding shaft body, a wheel structure is formed by the ring body supporting frame and the outer ring container so that the inserting needle head can be conveniently inserted into the land in the wheel trend to carry out shallow fertilization on crop roots, the fertilization effect is effectively improved, and the effect of precise shallow fertilization is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shallow fertilization for crop cultivation, and in particular to a precise shallow fertilization needle insertion device. Background Art

[0002] With the growth of global population and the limited arable land area, improving crop yield and quality has become an important issue in the agricultural field. As one of the key agricultural technologies to increase crop yield, the efficiency and effect of fertilization directly affect the growth of crops and the sustainable development of agriculture. Traditional fertilization methods often rely on experience and lack precision, leading to increasingly serious problems of fertilizer waste and environmental pollution. Therefore, shallow fertilization technology came into being, aiming to improve fertilizer utilization through scientific methods, reduce environmental impact, and improve crop yield and quality.

[0003] Shallow fertilization technology, as the name implies, refers to applying fertilizer to the shallow soil near the root system of crops so that the root system of crops can directly absorb and utilize nutrients. The core of this technology is "precision", that is, applying fertilizer at the right time, in the right place, and in the right amount. Compared with traditional surface spreading or deep fertilization, shallow fertilization can more effectively deliver fertilizer directly to the root system of crops, reduce nutrient loss in the soil, and improve fertilizer utilization efficiency.

[0004] Most of the existing shallow fertilization devices adopt the process of first digging trenches, then fertilizing, and finally covering with soil, which makes the structural design of the entire device complicated and also damages the surface of the soil, which will affect the growth of crops to a certain extent. There is also a type of direct plug-in fertilization device, which can inject fertilizer into the vicinity of the crop root system without damaging the surface of the soil, but when encountering hard objects such as stones in the soil, it is easy to damage the plug due to collision. Therefore, it is urgently needed to be improved. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a precise shallow fertilization needle device, which utilizes a wheeled structure design to allow the needles to be obliquely inserted into the soil during the fertilization process to avoid direct collision and damage with hard objects in the soil, and fertilizers are mixed and formulated through a built-in container to better achieve precise fertilization effects.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A precise shallow layer fertilization needle device comprises a feeding shaft body with an inner channel for connecting to an external support, an inner circular container sleeved on the feeding shaft body for containing fertilizer, an annular support frame rotatably arranged on the feeding shaft body, an outer circular container arranged on the annular support frame and corresponding to the annular wall of the inner circular container, a plurality of needle heads circumferentially distributed on the radial outer wall of the outer circular container, and a conveying channel with one end fixedly connected to the inner circular container and the other end movably connected to the outer circular container, wherein the feeding shaft body is respectively connected to an external pneumatic power source and a fertilizer tank through pipelines, and the fertilizer is delivered into the inner circular container through the inner channel, and control valves are arranged on the needle head and the conveying channel, so that when the needle head rotates to a specified position with the outer circular container, the fertilization channel of the needle head is connected, and the pressure provided by the pneumatic power source delivers the fertilizer to the specified fertilization area through the fertilization channel, thereby realizing three-dimensional precise fertilization of fixed point, fixed depth and fixed quantity.

[0008] Specifically, the fertilizer is at least one of gas fertilizer, liquid fertilizer, and ultrafine solid fertilizer.

[0009] Specifically, the conveying channels are arranged at a radial position between the inner circular container and the outer ring container, and there are three conveying channels arranged at the lower part and one conveying channel arranged at the upper part.

[0010] Specifically, the control valve is a pneumatic valve or a solenoid valve.

[0011] Specifically, the feeding shaft is provided with a plurality of inner channels, one of which is used to transmit a pneumatic power source, and the remaining inner channels are used to transmit different fertilizers.

[0012] Specifically, the tip portion of the pin head is in an arc shape.

[0013] Furthermore, a perforated plate dispenser for adjusting the fertilizer supply ratio is arranged on the feed shaft, one end of the perforated plate dispenser is communicated with the inner channel of the feed shaft, and the other end is connected to different fertilizer tanks through pipelines.

[0014] Specifically, the orifice plate dispenser includes a first fixed plate, an intermediate adjustment plate and a second fixed plate which are coaxially arranged in sequence and closely attached to each other, a plurality of first through-holes circumferentially arranged on the first fixed plate, a plurality of second through-holes circumferentially arranged on the second fixed plate and corresponding one-to-one to the first through-holes, and a plurality of adjustment holes circumferentially arranged on the intermediate adjustment plate. The number of the adjustment holes is greater than the number of the first through-holes, and the spacing between adjacent adjustment holes is different from the spacing between adjacent first through-holes to constitute a misalignment. When the intermediate adjustment plate is rotated to different positions, the number of the adjustment holes connecting the first through-holes and the second through-holes is different, so as to realize the supply of fertilizers with different ratios.

[0015] As another alternative, the needle head can be replaced with a spray head to achieve precise micro-irrigation of the roots.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention supplies fertilizer to the built-in inner circular container through the feeding shaft, and the wheel structure formed by the ring body support frame and the outer ring container facilitates the insertion of the needle head into the soil along the wheel direction to perform shallow fertilization on the crop root system, effectively improving the fertilization effect and achieving the effect of precise shallow fertilization. The present invention is simple and ingenious in design, convenient and reliable in use, and is suitable for application in fertilization equipment.

[0018] (2) The present invention configures the inner channel of the feeding shaft and sets the orifice plate distributor, so that the fertilizer in the inner circular container can be configured according to the required ratio, and different fertilizer ratios can be provided for different crop environmental conditions, thereby achieving more accurate fertilization control.

[0019] (3) The present invention realizes on-off control of the fertilization channel by configuring a control valve on the needle head and the delivery channel, thereby ensuring the precise fertilization control effect of fertilizing at a set position. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a schematic diagram of the side structure of an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the structure of the pin head in the embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the active connection of the conveying channel in an embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the orifice plate dispenser in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

[0026] Example

[0027] like Figures 1 to 5As shown, the precise shallow fertilization needle device comprises a feeding shaft 1 with an inner channel for connecting to an external bracket, an inner circular container 2 sleeved on the feeding shaft for containing fertilizer, a ring body support frame 3 rotatably arranged on the feeding shaft, an outer ring container 4 arranged on the ring body support frame and corresponding to the ring wall of the inner circular container, a plurality of needle heads 5 circumferentially distributed on the radial outer wall of the outer ring container, and a conveying channel 6 with one end fixedly connected to the inner circular container and the other end movably connected to the outer ring container, wherein the inner channel of the feeding shaft is communicated with the inner circular container, and control valves 7 are provided on the needle heads and the conveying channel. The pin device is mainly used in fertilizer spreaders. It can be dragged and moved by power equipment such as tractors to carry out precise shallow fertilization in a designated area along a set path. The fertilizer can be at least one of gas fertilizer, liquid fertilizer, and ultrafine solid fertilizer. The gas fertilizer can be carbon dioxide or ammonia. Liquid fertilizer is generally a liquid fertilizer product containing a nutrient element required by a crop. Ultrafine solid fertilizer is an ultrafine powder made by crushing and grinding a compound fertilizer with organic matter as a carrier. The external bracket 8 connected to the feeding shaft can be placed on power equipment such as tractors as an integral support and connecting component, and the pin device can also be lifted and lowered as a whole by configuring a lifting device on the external bracket to adjust the fertilization height. Auxiliary equipment such as a pneumatic power source and a fertilizer tank can be configured on the fertilizer spreader or power equipment, and can be connected to the corresponding inner channel interface position on the feeding shaft through a pipeline 9 to achieve pressure supply and fertilizer supply. In the specific implementation, the inner circular container is filled with fertilizers of corresponding capacity and ratio. Under the moving action of the power equipment, with the pin head at the bottom as the fulcrum, the wheel structure composed of the outer ring container and the ring body support frame rolls in the moving direction, and the corresponding pin head is inserted into the next fertilization position. Then the control valve connects the conveying channel and the pin head after the specified position, forming a fertilization channel from the inner circular container through the conveying channel and the pin head to the shallow soil (near the crop root system). Under the action of the pressure provided by the pneumatic power source, the fertilizer is directly applied to the vicinity of the root system, realizing three-dimensional precise fertilization of fixed point, fixed depth and fixed quantity.

[0028] Specifically, in order to better transport the fertilizer, the transport channel is arranged at a radial position between the inner circular container and the outer ring container, the transport channel is connected and fixed to the outer wall of the inner circular container, and the transport channel and the inner ring wall of the outer ring container can be movably connected in the form of an air sliding ring structure, that is, an annular guide groove is arranged on the inner ring wall of the outer ring container, and a one-way opening matching the position of the pin head is arranged at the bottom of the annular guide groove, and the movable end of the transport channel is clamped in the annular guide groove through a seal to ensure that the outer ring container can also close the channel during relative rotation, and the transport channel can only be connected when the movable end is rotated to the one-way opening position. Preferably, there are three transport channels arranged at the bottom and one at the top, so as to form fertilization channels in different directions to adapt to fertilization operations in different conditions, such as inserting into the shallow layer of the soil for fertilization, quantitative fertilization on the surface of the soil, and jetting or spraying from bottom to top on the back of the leaves.

[0029] Specifically, in order to facilitate the opening and closing control of the corresponding fertilizer delivery channel, the control valve adopts a pneumatic valve or a solenoid valve, and the control valve can be opened and closed at different positions through manual control or simple circuit control. For example, when the pin head at the bottom is directly below the axis, the control valve on the pin head and the corresponding delivery channel is opened, and the pressure of the pneumatic power source can make the fertilizer spray out from the pin head to the vicinity of the crop root system in the land. For another example, when the pin head rotates to correspond to the upper delivery channel, the control valve on the pin head and the corresponding delivery channel is opened, so that the fertilizer can be sprayed from the bottom to the wax-free area on the back of the leaf, thereby enhancing the absorption of the fertilizer.

[0030] Specifically, the tip of the pin head is in an arc shape, which can be easily inserted into the ground during movement, and can also increase the degree of tolerance when encountering hard objects such as stones, so that the pin head can be relatively dislocated and avoid direct collision and damage to the pin head like a direct insertion type.

[0031] Specifically, the feeding shaft is provided with a plurality of inner channels, the number of which is determined according to the type of fertilizer to be added, one of which is used to transmit the pressure of the pneumatic power source, and the remaining inner channels are used to transmit different fertilizers. By controlling the delivery amount of different fertilizers, different proportions of fertilizers can be mixed in the inner circular container.

[0032] Specifically, the present embodiment also provides a perforated plate dispenser 10 for adjusting the fertilizer supply ratio, which is arranged on the feeding shaft, one end of the perforated plate dispenser is connected to the inner channel of the feeding shaft, and the other end is connected to different fertilizer tanks through pipelines. Specifically, the perforated plate dispenser includes a first fixed plate 11, an intermediate adjustment plate 12, and a second fixed plate that are coaxially arranged in sequence, a plurality of first perforations 13 circumferentially opened on the first fixed plate, a plurality of second perforations opened on the second fixed plate and corresponding to the first perforations one by one, and a plurality of adjustment holes 14 circumferentially opened on the intermediate adjustment plate, the number of the adjustment holes is greater than the number of the first perforations, and the spacing between adjacent adjustment holes is different from the spacing between adjacent first perforations to constitute a misalignment. When the intermediate adjustment plate is rotated to different positions, the number of the adjustment holes connected to the first perforations and the second perforations is different, so as to realize the supply of fertilizers with different ratios, thereby achieving a precise fertilization effect.

[0033] As another alternative, the needle head is replaced with a spray head. Since the spray head does not need to be inserted into the ground, the device can be appropriately raised when in use. Through the setting of the spray head, liquid fertilizer can be atomized and sprayed upward from the roots of the crop near the ground to achieve precise atomization and fertilization, and can also be sprayed on the back of the leaves from bottom to top, and can also be compatible with gas fertilizer.

[0034] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any changes made by adopting the design principles of the present invention and performing non-creative work on this basis should fall within the protection scope of the present invention.

Claims

1. A precise shallow fertilization needle device, characterized in that: The utility model comprises a feeding shaft body with an inner channel for connecting with an external support, an inner circular container for containing fertilizers which is sleeved on the feeding shaft body, an annular support frame rotatably arranged on the feeding shaft body, an outer circular container arranged on the annular support frame and corresponding to the annular wall of the inner circular container, a plurality of pin heads which are circumferentially distributed on the radial outer wall of the outer circular container, and a conveying channel which is fixedly connected to the inner circular container at one end and movably connected to the outer circular container at the other end, wherein the feeding shaft body is respectively connected to an external pneumatic power source and a fertilizer tank through pipelines, and the fertilizer is delivered into the inner circular container through the inner channel, and control valves are arranged on the pin head and the conveying channel, so that when the pin head rotates to a specified position with the outer circular container, the fertilization channel of the pin head is connected, and the pressure provided by the pneumatic power source delivers the fertilizer to the specified fertilization area through the fertilization channel, so as to realize three-dimensional precise fertilization of fixed point, fixed depth and fixed quantity.

2. The precise shallow fertilization needle device according to claim 1 is characterized in that: The fertilizer is at least one of gas fertilizer, liquid fertilizer, and ultrafine solid fertilizer.

3. The precise shallow fertilization needle device according to claim 1, characterized in that: The conveying channels are arranged at radial positions between the inner circular container and the outer ring container, with three being arranged at the lower part and one being arranged at the upper part.

4. The precise shallow fertilization needle device according to claim 1, characterized in that: The control valve is a pneumatic valve or a solenoid valve.

5. The precise shallow fertilization needle device according to claim 1 is characterized in that: The feeding shaft is provided with a plurality of inner channels, one of which is used for transmitting a pneumatic power source, and the other inner channels are used for transmitting different fertilizers.

6. The precise shallow fertilization needle device according to claim 1, characterized in that: The tip portion of the pin head is in an arc shape.

7. The precise shallow fertilization needle device according to any one of claims 1 to 6, characterized in that: The feed shaft is provided with an orifice plate distributor for adjusting the fertilizer supply ratio. One end of the orifice plate distributor is communicated with the inner channel of the feed shaft, and the other end is connected to different fertilizer tanks through pipelines.

8. The precise shallow fertilization needle device according to claim 7, characterized in that: The orifice plate distributor includes a first fixed plate, an intermediate adjustment plate and a second fixed plate which are coaxially arranged in sequence and closely attached to each other, a plurality of first through-holes circumferentially provided on the first fixed plate, a plurality of second through-holes circumferentially provided on the second fixed plate and corresponding one to one with the first through-holes, and a plurality of adjustment holes circumferentially provided on the intermediate adjustment plate, wherein the number of the adjustment holes is greater than the number of the first through-holes, and the spacing between adjacent adjustment holes is different from the spacing between adjacent first through-holes to constitute a misalignment, and when the intermediate adjustment plate is rotated to different positions, the number of the adjustment holes connecting the first through-holes and the second through-holes is different to realize the supply of fertilizers with different ratios.

9. The precise shallow fertilization needle device according to any one of claims 1 to 6, characterized in that: Replace the needle tip with a spray tip.

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