A directional weeding and isolation device for soybean and corn strip planting

Abstract

The present invention relates to the technical field of agricultural machinery, and discloses a directional weeding partition device for soybean and corn strip planting, comprising a base plate, both sides of which are rotatably connected to travel wheels, a medicine storage barrel fixedly installed on the top of the base plate, a support protection cylinder fixedly connected to the front of the medicine storage barrel, a support sleeve fixedly connected to the top of the support protection cylinder, and the base plate is divided into two independent barrels for storing weeding liquids suitable for two different crops, and the support protection cylinder and the support sleeve are connected in a "T" shape. The present invention arranges a telescopic rod so that the distance between the partitions can be flexibly adjusted from fixed to adapt to the fields with the same planting spacing; and uses the water pressure applied by the water pump when spraying the pesticide to control the extension length of the telescopic rod, so that the partition device can be adjusted synchronously with the spraying range; and controls the inward rotation of the partition plate by periodically closing the spray pipe to reduce pesticide waste and avoid contamination of inter-row crops.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a directional weeding and partitioning device for strip planting of soybeans and corns. Background Art

[0002] In order to make full use of limited land resources, we actively promote composite planting technology. Among them, soybean and corn strip composite planting has obvious advantages of stabilizing corn and expanding beans, and has been widely promoted. It is currently used in the planting of soybeans and corn. We adjust the planting of soybeans and corn according to a certain row spacing, plant spacing and spacing to further increase the per mu yield, make the effective utilization area of ​​land larger, thereby achieving a greater per mu yield, and be able to achieve soybean and corn symbiosis and double harvest in one season in the same plot of land.

[0003] Since corn is a monocot and soybean is a dicot, the two crops have different choices of herbicides. Therefore, for soybean and corn weeding operations, spraying machinery capable of directional spraying must be used. However, existing directional spraying equipment will still pollute crops in alternate rows, causing damage to corn and soybean plants; some spraying devices are equipped with partitions for protection, but since the row spacing, plant spacing and spacing of soybeans and corn are adjusted differently in different fields when they are planted in strips, the spraying distance of existing weeding devices is fixed, and the distance between partitions is also fixed, which makes it difficult to adapt to the use of different planting spacings; and because the partitions will adhere to a large amount of pesticides when blocking the overflow of pesticides, and as the pesticides accumulate, they will slide to the bottom of the partition, that is, the junction of soybean and corn planting, resulting in a large amount of pesticide waste and reducing the partition effect of the partition, which is not conducive to the healthy growth of soybeans and corn. Summary of the Invention

[0004] The invention aims at the shortcomings of the existing weeding and isolation device for soybean and corn strip planting proposed in the background technology during use.

[0005] The present invention provides the following technical solution: a directional weeding partition device for strip planting of soybeans and corns, comprising a base plate, both sides of the base plate are rotatably connected to travel wheels, a medicine storage barrel is fixedly installed on the top of the base plate, the front of the medicine storage barrel is fixedly connected to a support protection cylinder, the top of the support protection cylinder is fixedly connected to a support sleeve, the base plate is divided into two independent barrels for storing weeding liquid adapted to two different crops, the support protection cylinder is connected to the support sleeve in a "T" shape, the outer side of the support sleeve is movably sleeved with a telescopic rod, the telescopic rod is in a "7" shape, and its horizontal The segment can slide left and right along the supporting sleeve, the vertical segment of the telescopic rod is evenly provided with rotating holes, and a rotating rod is movably connected through the rotating holes, and the bottom of the rotating rod is fixedly connected to a partition piece, and two groups of drug delivery tubes are arranged in parallel inside the supporting protective tube, and the two groups of drug delivery tubes are respectively connected to two independent barrels in the bottom plate, and two groups of water pumps are fixedly installed on both sides of the front of the bottom plate, and the two groups of water pumps independently control the two groups of drug delivery tubes, and the two sides in the middle of the supporting protective tube are respectively fixedly connected with spray pipes, and the outer side of the spray pipe is movably connected with a spray head cover, and the outer end of the spray head cover is provided with divergent spray holes.

[0006] Preferably, one end of the telescopic rod is provided with a closing plate with the same diameter as the inner wall of the supporting sleeve, and a high-pressure chamber is formed between the inner cavity of the supporting sleeve and the closing plate of the telescopic rod. A telescopic rod spring is fixedly installed on the other side of the inner cavity of the supporting sleeve, one end of the outer tube one-way valve is connected to the closing plate of the telescopic rod, and the other end is connected to the inner wall of the end of the supporting sleeve, the end of the support sleeve is provided with an outer tube one-way valve, and one end of the telescopic rod is provided with an inner tube one-way valve, and a plurality of sealing plates are fixedly connected to the inner wall of the vertical section of the telescopic rod, and the position of the sealing plates corresponds to the position of the rotating rod, and a semicircular rotating plate is fixedly connected to one side in the middle of the rotating rod.

[0007] Preferably, a plurality of through holes are provided at the end of the spray pipe, the total flux of the through holes is greater than the total flux of the spray holes provided on one side of the nozzle cover, a first connecting rod is fixedly connected to the middle of the nozzle cover, the first connecting rod is movably sleeved into the spray pipe, a second connecting rod is movably connected to one end of the first connecting rod, a connecting rod spring is fixedly installed between the second connecting rod and the first connecting rod, a sealing plug is fixedly connected to the tail end of the second connecting rod, and a magnetic ring is fixedly installed at the connection between the spray pipe and the drug delivery pipe.

[0008] Preferably, the partition pieces are staggered and overlapped to form a closed shielding surface.

[0009] Preferably, the middle of the drug delivery tube is connected to the drug spraying tube, and the end of the drug delivery tube is connected to the supporting sleeve.

[0010] Preferably, the minimum length of the contraction of the first connecting rod and the second connecting rod is consistent with the length of the spray pipe, the sealing plug is located in the drug delivery pipe, and the maximum length of the stretching of the first connecting rod and the second connecting rod is consistent with the length of the spray pipe and the spray head cover when the spray head cover is moved to the farthest point.

[0011] Preferably, the sealing plug is magnetic, and its polarity is opposite to that of the magnetic ring, and the diameter of the sealing plug is larger than the diameter of the spray pipe.

[0012] Preferably, the conducting direction of the high-pressure chamber is from the outside of the support sleeve to the inside of the support sleeve, and the conducting direction of the inner tube one-way valve is from the inside of the support sleeve to the inside of the telescopic rod.

[0013] The present invention has the following beneficial effects:

[0014] 1. The present invention provides a telescopic rod so that the distance between the partitions can be flexibly adjusted from fixed to adapt to the fields with the same planting spacing; and uses the water pressure applied by the water pump when spraying the pesticide to control the extension length of the telescopic rod, so that the partition device can be adjusted synchronously with the spraying range; through the periodic closure of the spray pipe, the inward rotation of the baffle is controlled to reduce the waste of pesticides and avoid their contamination of crops in alternate rows.

[0015] 2. The present invention cooperates with the telescopic rod and the support sleeve, so that the partition distance of the partition piece can be adjusted accordingly as the telescopic rod is extended or shortened, thereby adapting to different adjustments of row spacing, plant spacing and spacing in different fields, greatly expanding the application field of the directional weeding partition device.

[0016] 3. The present invention connects the tail end of the drug delivery tube to the high-pressure chamber and uses the high pressure applied by the water pump when spraying the herbicide to control the extension distance of the telescopic rod, so that the extension length of the telescopic rod is consistent with the range of the medicine sprayed from the nozzle cover after the water pump is pressurized, and the extension length of the telescopic rod can be changed consistently with the range.

[0017] 4. The present invention controls the pressure value at the high-pressure chamber to make periodic changes by utilizing the difference in the flow rate at the nozzle cover, thereby controlling the telescopic rod to make a small reciprocating motion within the partition range, and is equipped with a one-way valve and a rotating rod to control the partition piece to rotate inward regularly, thereby throwing the medicine attached to the inner surface of the partition piece inward, preventing the medicine from accumulating into a flow and freely falling to the planting junction, affecting the healthy growth of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the weeding and partitioning device;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the weeding partition device;

[0020] Figure 3 Weeding and isolation device Figure 2 A partial enlarged schematic diagram of the structure at point B in the middle;

[0021] Figure 4 Weeding and isolation device Figure 2 A partial enlarged schematic diagram of the structure at center A;

[0022] Figure 5 This is a schematic diagram of the oblique cross-section structure of the weeding partition device;

[0023] Figure 6 This is a schematic cross-sectional diagram of the telescopic rod structure of the weeding partition device.

[0024] In the figure: 1. Base plate; 2. Travel wheel; 3. Medicine storage barrel; 4. Support and protection tube; 5. Support sleeve; 51. High-pressure chamber; 52. Telescopic rod spring; 53. Outer tube one-way valve; 6. Telescopic rod; 61. Inner tube one-way valve; 62. Sealing plate; 7. Rotating rod; 71. Rotating plate; 8. Partition plate; 9. Medicine delivery tube; 10. Water pump; 11. Medicine spraying tube; 12. Nozzle cover; 121. Nozzle spring; 122. First connecting rod; 123. Second connecting rod; 124. Connecting rod spring; 125. Sealing plug; 126. Magnetic ring. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-2The directional weeding partition device for strip planting of soybeans and corns comprises a bottom plate 1, which is divided into two independent barrels for storing weeding liquids suitable for two different crops. Traveling wheels 2 are rotatably connected to the two sides of the bottom plate 1. A medicine storage barrel 3 is fixedly installed on the top of the bottom plate 1. The front of the medicine storage barrel 3 is fixedly connected to a supporting protective cylinder 4. The top of the supporting protective cylinder 4 is fixedly connected to a supporting sleeve 5. The supporting protective cylinder 4 and the supporting sleeve 5 are connected in a "T" shape. A telescopic rod 6 is movably sleeved on the outer side of the supporting sleeve 5. The telescopic rod 6 is in a "7" shape. Its horizontal section can slide left and right along the supporting sleeve 5, which is convenient for adjusting the extension length of the rotating rod 7 to adapt to scenes with different planting widths. The vertical section of the telescopic rod 6 is evenly provided with rotating holes, and the rotating rod 7 is movably sleeved through the rotating holes. A partition piece 8 is fixedly connected to the bottom of the rotating rod 7. The partition pieces 8 are staggered and overlapped to form a closed shielding surface, thereby isolating the pesticide sprayed by the device to prevent it from contaminating the soybeans or corn in the adjacent planting rows. Two groups of drug delivery pipes 9 are arranged side by side inside the supporting protective tube 4. The two groups of drug delivery pipes 9 are respectively connected to two independent barrels in the base plate 1. Two groups of water pumps 10 are fixedly installed on both sides of the front of the base plate 1. The two groups of water pumps 10 independently control the two groups of drug delivery pipes 9, so that the water pressure when spraying the herbicide on different crops can be independently and freely controlled. The two sides in the middle of the supporting protective tube 4 are respectively fixedly connected with a spray pipe 11. The outer side of the spray pipe 11 is movably connected with a nozzle cover 12. The outer end of the nozzle cover 12 is provided with a divergent spray hole, which is convenient for spraying the herbicide over a large area and evenly.

[0027] See also Figure 3The middle of the drug delivery tube 9 is connected to the spray tube 11, and the end of the drug delivery tube 9 is led into the support sleeve 5. One end of the telescopic rod 6 is provided with a closing plate with the same diameter as the inner wall of the support sleeve 5, so that the herbicidal liquid flowing out of the drug delivery tube 9 is blocked by the telescopic rod 6 and will not flow out. A high-pressure chamber 51 is formed between the inner cavity of the support sleeve 5 and the closing plate of the telescopic rod 6. A telescopic rod spring 52 is fixedly installed on the other side of the inner cavity of the support sleeve 5. One end of the outer tube one-way valve 53 is connected to the closing plate of the telescopic rod 6, and the other end is connected to the inner wall of the end of the support sleeve 5, thereby pushing the telescopic rod 6 to retract into the support sleeve 5, so that the telescopic rod 6 is in a state of retracting into the inner cavity of the support sleeve 5 without being subjected to other external forces, which is convenient for the storage of the telescopic rod 6 and the entire device. When the device is in use, the water pump 10 is drawn out The medicine in the base plate 1 is transported to the spraying pipe 11 through the medicine delivery pipe 9 and sprayed out. At the same time, the medicine at the end of the medicine delivery pipe 9 is pressurized by the water pump 10, pressing the closing plate at one end of the telescopic rod 6, causing it to move outward and compress the telescopic rod spring 52. When the crop planting width at the spraying location is large, it is necessary to adjust the level of the water pump 10 to increase the water pressure it generates, so that the maximum distance of the medicine sprayed from the nozzle cover 12 is farther. At the same time, the increased water pressure pushes the telescopic rod 6 to move outward to increase the distance to adapt to the crop planting area with increased width, ensuring that the device can adapt to scenes with different planting widths, and the partition distance can be adaptively adjusted according to the spraying distance. At the same time, the setting of independent water pumps 10 on both sides can make the partition distances on both sides independently set, so as to adapt to the different planting widths of soybeans and corn on both sides.

[0028] See also Figure 4, a plurality of through holes are opened at the end of the spray pipe 11, and the total flux of the through holes is greater than the total flux of the spray holes opened on one side of the nozzle cover 12, so that the medicine accumulates in the nozzle cover 12, pushing the nozzle cover 12 to move outward, and a first connecting rod 122 is fixedly connected in the middle of the nozzle cover 12, and the first connecting rod 122 is movably sleeved into the spray pipe 11, and one end of the first connecting rod 122 is movably connected to the second connecting rod 123, and a connecting rod spring 124 is fixedly installed between the second connecting rod 123 and the first connecting rod 122. The minimum length of the contraction of the first connecting rod 122 and the second connecting rod 123 is consistent with the length of the spray pipe 11, and the second connecting rod 123 is movably sleeved into the spray pipe 11. The tail end of 123 is fixedly connected with a sealing plug 125, which is located in the drug delivery tube 9, and the diameter of the sealing plug 125 is larger than the diameter of the spray tube 11. A magnetic ring 126 is fixedly installed at the connection between the spray tube 11 and the drug delivery tube 9. The sealing plug 125 is magnetic, and its polarity is opposite to that of the magnetic ring 126, and the two can be attracted to each other. The maximum length of the first connecting rod 122 and the second connecting rod 123 is consistent with the length of the spray tube 11 and the spray tube cover 12 when the nozzle cover 12 moves to the farthest point. When the nozzle cover 12 is pushed outward to the outermost side by the accumulated medicine in the nozzle cover 12, the nozzle cover 12 pulls the first connecting rod 122 and the second connecting rod 123 to move outward to the farthest point. The rod 122 drives the second connecting rod 123 and the sealing plug 125 to move, so that the sealing plug 125 is tightly adsorbed with the magnetic ring 126. At this time, the sealing plug 125 closes the spray pipe 11, and the hydraulic pressure in the drug delivery pipe 9 is all transmitted to the high-pressure chamber 51, pushing the telescopic rod 6 to move outward, and no more herbicide flows into the spray pipe 11. The nozzle spring 121 is fixedly installed at the joint of the nozzle cover 12 and the spray pipe 11. The nozzle spring 121 pushes the nozzle cover 12 to reset, and the accumulated medicine in the nozzle cover 12 is continuously sprayed. As the nozzle cover 12 is reset, the first connecting rod 122 presses the connecting rod spring 124, so that the first connecting rod The rod 122 and the second connecting rod 123 are retracted, and the minimum length of the retraction of the first connecting rod 122 and the second connecting rod 123 is consistent with the length of the spray pipe 11. After the minimum distance is retracted, the elastic force of the connecting rod spring 124 increases to push the sealing plug 125 and the magnetic ring 126 to separate. At this time, the spray pipe 11 is connected to the drug delivery pipe 9 again, and the water pressure at the drug delivery pipe 9 is distributed to the spray pipe 11. At this time, the pressure at the high-pressure chamber 51 is reduced, and the telescopic rod 6 moves inward to recover, thereby realizing continuous small-amplitude internal and external vibration of the telescopic rod 6, thereby shaking off the medicine adhered to the partition piece 8, avoiding a large amount of medicine adhering to the partition piece 8 and causing waste.

[0029] See also Figure 5-6, an outer cylinder one-way valve 53 is provided at the end of the support sleeve 5, and the conduction direction of the high-pressure chamber 51 is from the outside of the support sleeve 5 to the inside of the support sleeve 5. An inner cylinder one-way valve 61 is provided at one end of the telescopic rod 6. The conduction direction of the inner cylinder one-way valve 61 is from the inside of the support sleeve 5 to the inside of the telescopic rod 6. A plurality of sealing pieces 62 are fixedly connected to the inner wall of the vertical section of the telescopic rod 6. The position of the sealing piece 62 corresponds to the position of the rotating rod 7. A semicircular rotating piece 71 is fixedly connected to one side in the middle of the rotating rod 7. The rotating rod 7 can be rotated along the rotating hole on the telescopic rod 6. When the spray pipe 11 is closed, the delivery The water pressure at the medicine pipe 9 is all applied to the high-pressure chamber 51, pushing the telescopic rod 6 outward. At this time, the gas at the support sleeve 5 enters the telescopic rod 6 through the inner tube one-way valve 61, pushing the rotating piece 71 to flip downward, thereby driving the rotating rod 7 and the partition piece 8 to rotate slightly, thereby throwing the medicine on the partition piece 8 to the inside. After the airflow ends, the partition piece 8 drives the rotating rod 7 and the rotating piece 71 to reset due to gravity. When the spray pipe 11 is opened again, the telescopic rod 6 moves to the left and resets under the action of the telescopic rod spring 52, and the external gas is replenished into the support sleeve 5 through the outer tube one-way valve 53, and the cycle is repeated.

[0030] The working principle of the method of use of the present invention is as follows:

[0031] When in use, according to the crops on both sides of the device, the required medicine is placed in the two independent barrels in the bottom plate 1 respectively, and the water pump 10 is started. The level of the water pump 10 is adjusted according to the width of the planting areas on both sides. The water pump 10 pumps the medicine in the bottom plate 1 to be transported to the high-pressure chamber 51 through the medicine delivery pipe 9, and pushes the telescopic rod 6 to compress the telescopic rod spring 52 and move outward. At the same time, the medicine passes through the medicine spraying pipe 11 and is sprayed from the nozzle cover 12. According to the different levels of the water pump 10, the water pressure in the medicine delivery pipe 9 changes accordingly, pushing the telescopic rod 6 outward and the distance the nozzle cover 12 sprays the medicine increase accordingly. And it can adapt to planting areas of different widths; since the total flux of the through hole at the end of the spraying pipe 11 is greater than the total flux of the spraying hole opened on one side of the nozzle cover 12, the medicine accumulates at the nozzle cover 12, pushing the nozzle cover 12 to compress the nozzle spring 121 to move outward, thereby driving the first connecting rod 122 and the second connecting rod 123 to move, pulling the sealing plug 125 and the magnetic ring 126 to be adsorbed and closed, at this time the sealing plug 125 closes the spraying pipe 11, and the hydraulic pressure in the drug delivery pipe 9 is all transmitted to the high-pressure chamber 51, pushing the telescopic rod 6 to move outward, and the gas at the support sleeve 5 enters through the inner cylinder one-way valve 61 The nozzle 12 is inserted into the telescopic rod 6, pushing the rotating piece 71 to flip downward, thereby driving the rotating rod 7 and the partition piece 8 to rotate slightly, thereby throwing the medicine on the partition piece 8 to the inside. After the sealing plug 125 is adsorbed and sealed, no more herbicide liquid flows into the spraying pipe 11. The compressed nozzle spring 121 pushes the nozzle cover 12 to reset, squeezing the medicine accumulated inside the nozzle cover 12 to make it continue to spray. As the nozzle cover 12 is reset, the first connecting rod 122 presses the connecting rod spring 124, causing the first connecting rod 122 and the second connecting rod 123 to contract. After the contraction distance is minimum, the elastic force of the connecting rod spring 124 increases. The sealing plug 125 is pushed away from the magnetic ring 126, and then the connecting rod spring 124 is reset. At this time, the spray pipe 11 is connected to the drug delivery pipe 9 again, and the water pressure at the drug delivery pipe 9 is distributed to the spray pipe 11. The water pressure at the high-pressure chamber 51 is reduced, and the telescopic rod 6 moves left and resets under the action of the telescopic rod spring 52. The external gas is replenished into the supporting sleeve 5 through the outer tube one-way valve 53, thereby realizing a fluctuation cycle. The above cycle continues during the use of the device, thereby achieving the effect of intermittently throwing the medicine adhered to the partition piece 8 to the inside, avoiding the phenomenon of medicine adhering to the partition piece 8 and causing waste.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A directional weeding and isolation device for soybean and corn strip planting, comprising a base plate (1), two sides of the base plate (1) are rotatably connected to travel wheels (2), a medicine storage barrel (3) is fixedly installed above the base plate (1), the front of the medicine storage barrel (3) is fixedly connected to a support protection cylinder (4), and the top of the support protection cylinder (4) is fixedly connected to a support sleeve (5), characterized in that: The bottom plate (1) is divided into two independent barrels for storing weed control liquids adapted to two different crops. The support protection cylinder (4) is connected to the support sleeve (5) in a "T" shape. The outer side of the support sleeve (5) is movably connected to a telescopic rod (6). The telescopic rod (6) is in a "7" shape, and its horizontal section can slide left and right along the support sleeve (5). The vertical section of the telescopic rod (6) is evenly provided with rotating holes, and a rotating rod (7) is movably connected through the rotating holes. The bottom of the rotating rod (7) is fixedly connected to a partition plate (8). Two groups of drug delivery tubes (9) are arranged in parallel inside the support protection tube (4), and the two groups of drug delivery tubes (9) are respectively connected to two independent barrels in the bottom plate (1). Two groups of water pumps (10) are fixedly installed on both sides of the front of the bottom plate (1), and the two groups of water pumps (10) independently control the two groups of drug delivery tubes (9). The two sides of the middle of the support protection tube (4) are respectively fixedly connected with spray pipes (11), and the outer side of the spray pipe (11) is movably connected with a nozzle cover (12), and the outer end of the nozzle cover (12) is provided with divergent spray holes; A closing plate having the same diameter as the inner wall of the support sleeve (5) is provided at one end of the telescopic rod (6), a high-pressure chamber (51) is formed between the inner cavity of the support sleeve (5) and the closing plate of the telescopic rod (6), a telescopic rod spring (52) is fixedly installed on the other side of the inner cavity of the support sleeve (5), an outer cylinder one-way valve (53) is provided at the end of the support sleeve (5), one end of the outer cylinder one-way valve (53) is connected to the closing plate of the telescopic rod (6), and the other end is connected to the inner wall of the end of the support sleeve (5), an inner cylinder one-way valve (61) is provided at one end of the telescopic rod (6), a plurality of blocking pieces (62) are fixedly connected to the inner wall of the vertical section of the telescopic rod (6), the position of the blocking pieces (62) corresponds to the position of the rotating rod (7), and a semicircular rotating piece (71) is fixedly connected to one side in the middle of the rotating rod (7).

2. The directional weeding and isolation device for soybean and corn strip planting according to claim 1, characterized in that: The end of the spray pipe (11) is provided with a plurality of through holes, the total flux of the through holes being greater than the total flux of the spray holes provided on one side of the nozzle cover (12), the middle of the nozzle cover (12) is fixedly connected with a first connecting rod (122), the first connecting rod (122) is movably sleeved into the spray pipe (11), one end of the first connecting rod (122) is movably connected with a second connecting rod (123), a connecting rod spring (124) is fixedly installed between the second connecting rod (123) and the first connecting rod (122), the tail end of the second connecting rod (123) is fixedly connected with a sealing plug (125), and a magnetic ring (126) is fixedly installed at the connection between the spray pipe (11) and the drug delivery pipe (9).

3. The directional weeding and isolation device for soybean and corn strip planting according to claim 1, characterized in that: The partition pieces (8) are distributed in an interlaced and overlapping manner, and together form a closed shielding surface.

4. The directional weeding and isolation device for soybean and corn strip planting according to claim 1, characterized in that: The middle of the drug delivery tube (9) is connected to the drug spraying tube (11), and the end of the drug delivery tube (9) is connected to the support sleeve (5).

5. The directional weeding and isolation device for soybean and corn strip planting according to claim 2, characterized in that: The minimum length of the contraction of the first connecting rod (122) and the second connecting rod (123) is consistent with the length of the spray pipe (11), the sealing plug (125) is located in the drug delivery tube (9), and the maximum length of the stretching of the first connecting rod (122) and the second connecting rod (123) is consistent with the sum of the lengths of the spray pipe (11) and the spray head cover (12) when the spray head cover (12) moves outward to the farthest point.

6. The directional weeding and isolation device for soybean and corn strip planting according to claim 2, characterized in that: The sealing plug (125) is magnetic, and its polarity is opposite to that of the magnetic ring (126), and the diameter of the sealing plug (125) is larger than the diameter of the spray pipe (11).

7. The directional weeding and isolation device for soybean and corn strip planting according to claim 2, characterized in that: The conducting direction of the high-pressure chamber (51) is from the outside of the support sleeve (5) to the inside of the support sleeve (5), and the conducting direction of the inner sleeve one-way valve (61) is from the inside of the support sleeve (5) to the inside of the telescopic rod (6).

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