Soil loosening and ventilating improvement device for fruit tree planting
By designing a combination of inserts, shafts, and sealing strips, the problem of pipeline flooding was solved, achieving efficient soil aeration and increased oxygen, improving soil structure, and the inserts are simple to process, low in cost, and easy to maintain.
Patent Information
- Application Number
- CN202520237395.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-14
AI Technical Summary
The existing pipes used in fruit tree planting are easily submerged by soil water and mud, causing them to malfunction and fail to effectively loosen the soil and increase oxygen content.
Design a soil loosening and aeration improvement device for fruit tree planting, including a tube, a shaft and a sealing strip. The opening and closing of the air holes is controlled by the rotation of the shaft to prevent water and mud penetration, and high-pressure gas is introduced to loosen the soil when needed.
It effectively prevents the insertion tube from being submerged by infiltration, achieves efficient soil aeration, increases oxygen content, improves soil structure, and the insertion tube design is flexible, easy to process, low in cost, and easy to maintain.
Smart Images
Figure CN223928830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fruit tree planting technology, specifically to a soil loosening and aeration improvement device for fruit tree planting. Background Technology
[0002] In orchards where fruit trees such as pomelos are planted, it is necessary to loosen the soil during the growth process of the fruit trees. The main purpose is to improve soil permeability and increase the oxygen content in the soil. For example, the root system of fruit trees such as pomelos is an aerobic root system with strong respiration and requires more oxygen. Good aeration can enhance root respiration, promote root absorption of nutrients, and benefit root growth and development.
[0003] To prevent damage to the fruit tree roots, pipes are typically pre-buried near the trees, with multiple air holes drilled in them. High-pressure gas is periodically injected into the pipes, and as it exits through the air holes, it effectively loosens the soil and increases its oxygen content, thus improving the soil structure. However, with prolonged use, water and mud from the soil seep into the pipes through the air holes, gradually submerging them and rendering them unusable.
[0004] Therefore, a soil loosening and aeration improvement device for fruit tree planting is designed to avoid functional failure caused by long-term water and mud seepage into the soil through the pipeline. Utility Model Content
[0005] The purpose of this invention is to provide a soil loosening and aeration improvement device for fruit tree planting, so as to solve the problems described in the background art.
[0006] The technical solution of this utility model is implemented as follows:
[0007] A soil loosening and aeration improvement device for fruit tree planting includes a vertically arranged tube with an open top. A circular shaft hole is formed along the central axis of the tube. An arc-shaped groove is formed on the inner wall of the tube, with its upper and lower ends extending along the central axis. The upper end of the arc-shaped groove extends to the top opening of the tube. The cross-section of the arc-shaped groove is fan-shaped. Multiple air holes communicating with the arc-shaped groove are also formed on the outer wall of the tube, spaced apart along the central axis. A cylindrical shaft is slidably inserted into the tube, rotating within the shaft hole. The outer wall of the shaft slides and fits against the wall of the shaft hole. A sealing strip is provided on the side wall of the shaft, with its upper and lower ends extending along the central axis of the tube. The sealing strip is precisely inserted when the shaft is inserted into the shaft hole. Within the arc-shaped groove, the side wall of the sealing strip furthest from the central axis of the shaft core slides and fits into contact with the groove wall furthest from the central axis of the shaft core. When the shaft core rotates to one side to the first preset position, the sealing strip abuts against one side of the arc-shaped groove wall, preventing the shaft core from rotating and sealing the vent. When the shaft core rotates to the other side to the second preset position, the sealing strip abuts against the other side of the arc-shaped groove wall, preventing the shaft core from rotating and ensuring the vent is not blocked. The top of the insertion tube is detachably sealed with a tube cap. When the bottom of the shaft core abuts against the bottom of the insertion tube, the top of the shaft core does not abut against the top of the inner tube cap, thus forming an air chamber. The top of the shaft core is also provided with a rotating structure for rotating the shaft core. The top of the tube cap is also provided with a connecting pipe that connects to the air chamber, and the connecting pipe is also provided with a sealing component.
[0008] When using the above method, multiple holes are drilled around the trunk during fruit tree planting. The insert is then inserted into the soil, with the vents below ground level and a portion of the insert exposed above ground. The exposed portion of the insert does not have vents. When aeration is not required, the shaft is rotated via a rotating structure, causing the sealing strip on the shaft to seal all the vents. A pipe cap is then installed, and the sealing component is connected to the connecting pipe. At this point, the inside of the insert is sealed, preventing water and mud from the soil from entering. When ventilation is needed, open the tube cap and rotate the shaft by rotating the structure to move the sealing strip away from the vent. The vent connects to the arc-shaped groove, which in turn connects to the top air chamber. Then, replace the tube cap, remove the sealing component, and connect the high-pressure air hose to the connecting pipe. The high-pressure gas enters the air chamber from the connecting pipe and then from the air chamber into the arc-shaped groove. Under the action of high pressure, the water and mud in the vent are discharged outward. The high-pressure gas discharged from the vent creates an explosion effect at the end of the vent, thereby ventilating and loosening the soil outside the tube, increasing the oxygen content of the soil, and thus improving the soil.
[0009] A further technical solution is that the cannula includes a bottom tube, a top tube, and multiple middle tubes. The bottom tube is sealed at the bottom and open at the top. The bottom and top of the middle tubes are both open, and the bottom and top of the top tube are both open. The bottom tube is located at the bottom, and the top tube is located at the top. Multiple middle tubes are located between the bottom tube and the top tube. The multiple middle tubes are connected in series to form an intermediate tube. The bottom of the intermediate tube is connected to the top of the bottom tube, and the bottom of the top tube is connected to the top of the intermediate tube. The inner walls of the bottom tube, the middle tubes, and the top tube are connected to each other to form the shaft hole. The arc-shaped groove is opened downward from the top opening of the top tube along the central axis of the shaft hole to the bottom of the inner wall of the bottom tube. The tube cap is detachably sealed on the top of the top tube. The air hole is opened on the middle tube and the bottom tube.
[0010] When using the above scheme, by designing the insertion tube as a combination of bottom tube, middle tube and top tube, it is convenient to process the insertion tube in sections, reducing the processing difficulty of the insertion tube. At the same time, the number of middle tubes can be adjusted according to the actual situation to form middle tubes of different lengths, thereby forming insertion tubes of different lengths, which is more conducive to practical applications.
[0011] A further technical solution is that the top of the bottom tube also protrudes upward along the central axis of the bottom tube to form a first annular protrusion tube, and the outer wall of the first protrusion tube is also provided with a first plane. The bottom of the middle tube also has a second slot opening upward along the central axis of the middle tube, and the top of the middle tube also protrudes upward along the central axis of the middle tube to form a second annular protrusion tube, the outer wall of the second protrusion tube is also provided with a second plane. The groove wall of the second slot matches the outer wall of the second protrusion tube, and the groove wall of the second slot matches the outer wall of the first protrusion tube. The upper middle tube in the intermediate tube is fitted onto the second protrusion tube of the adjacent lower middle tube through the second slot, so that the bottom of the upper middle tube in the intermediate tube is in contact with the top of the adjacent lower middle tube, thus making the upper middle tube in the intermediate tube... The side wall of the second slot fits against the outer wall of the second convex tube of the adjacent lower middle tube, so that the top wall of the second slot of the upper middle tube in the middle tube fits against the top wall of the second convex tube of the adjacent lower middle tube, thus aligning the arc groove of the upper middle tube with the arc groove of the adjacent lower middle tube. The lowermost middle tube of the middle tube is fitted onto the first convex tube of the bottom tube through the second slot, so that the bottom of the lowermost middle tube fits against the top of the bottom tube, thus fitting the side wall of the second slot of the lowermost middle tube fits against the outer wall of the first convex tube, thus fitting the top wall of the second slot of the lowermost middle tube fits against the top wall of the first convex tube, thus aligning the arc groove of the middle tube with the arc groove of the bottom tube.
[0012] When using the above scheme, by designing the fit between the first protruding tube, the first plane and the second slot, and by designing the fit between the second protruding tube, the second plane and the second slot, the middle tube and the bottom tube can be quickly positioned and joined.
[0013] A further technical solution is that the bottom of the top tube is provided with a first slot along the central axis of the top tube. The wall of the first slot matches the outer wall of the second convex tube. The top tube is fitted onto the second convex tube of the uppermost middle tube through the first slot, so that the bottom of the top tube is in contact with the top of the uppermost middle tube, so that the side wall of the first slot is in contact with the outer wall of the second convex tube of the uppermost middle tube, so that the top wall of the first slot is in contact with the top wall of the second convex tube of the uppermost middle tube, so that the arc-shaped groove of the top tube is aligned with the arc-shaped groove of the middle tube.
[0014] When using the above scheme, the design of the first slot, the second protruding tube, and the second plane allows for quick positioning and engagement between the top tube and the middle tube.
[0015] A further technical solution is that the top of the jacking pipe also protrudes upward along the central axis of the jacking pipe to form a third annular convex pipe. The outer wall of the third convex pipe is provided with threads, and the pipe cap is screwed onto the third convex pipe. The arc groove of the jacking pipe extends upward along the central axis of the jacking pipe to the top of the third convex pipe. The outer diameter of the third convex pipe is the same as the outer diameter of the second convex pipe, and the inner diameter of the third convex pipe is the same as the inner diameter of the second convex pipe.
[0016] When using the above solution, the pipe cover is installed by designing a third convex tube and setting threads on the outside of the third convex tube, so that the middle tube and the top tube can be processed using the same basic mold, thereby reducing manufacturing costs.
[0017] A further technical solution is that the outer wall of the connecting pipe is threaded, and the sealing component is a pipe cap, which is screwed onto the connecting pipe.
[0018] A further technical solution is that the rotating structure includes a non-circular slot opened on the top of the shaft core. The cross-section of the non-circular slot is non-circular, and the non-circular slot is opened downward from the top of the shaft core along the central axis of the shaft core.
[0019] When using the above scheme, by designing the rotating structure as a non-circular slot, the machining difficulty of the rotating structure is reduced, which is conducive to the machining of the shaft core, the ease of installation of the shaft core, and the realization of the rotating function of the shaft core.
[0020] A further technical solution is that the top of the shaft core also protrudes upward to form a boss, the outer diameter of the boss is smaller than the outer diameter of the shaft core, and the non-circular slot is opened downward from the top of the boss.
[0021] When using the above solution, by designing a boss with a smaller outer diameter, the boss between the inner wall of the insertion tube and the non-circular slot forms a clamping part, which makes it easy to clamp and remove the shaft core, and facilitates the later inspection and maintenance of the shaft core.
[0022] A further technical solution is that the non-circular slot is a regular hexagonal hole.
[0023] A further technical solution is that the outer wall of the shaft is covered with a polytetrafluoroethylene coating.
[0024] The beneficial effects of this utility model are as follows:
[0025] 1. Effectively prevents the insertion tube from being submerged by infiltration: The closure of the air vents in the insertion tube is controlled by rotating the sealing strip of the shaft. When air is not supplied, it effectively prevents water and mud from seeping into the insertion tube through the air vents. When air supply is needed, the shaft can be rotated quickly and easily to open the air vents, achieving efficient soil aeration, increasing soil oxygen content, and thus improving the soil.
[0026] 2. Flexible cannula design: The cannula adopts a combination design of bottom tube, middle tube, and top tube, which facilitates segmented processing and reduces processing difficulty. At the same time, the number of middle tubes can be adjusted according to actual needs to form cannulas of different lengths, making it highly adaptable.
[0027] 3. Quick positioning and connection: Through the design of the convex tube, flat surface and slot, quick positioning and connection between the middle tube and the bottom tube, and between the top tube and the middle tube are realized, which improves the installation efficiency.
[0028] 4. Reduced manufacturing costs: The middle tube and the top tube can be processed using the same basic mold. The pipe cover is installed by designing a third convex tube and its external thread, which reduces manufacturing costs.
[0029] 5. Optimized Rotating Structure Design: The rotating structure is designed as a non-circular slot, which reduces the difficulty of processing, simplifies the installation of the shaft core and the realization of the rotating function, and improves practicality.
[0030] 6. Facilitates later maintenance: The protrusion between the inner wall of the insertion tube and the non-circular slot forms a clamping part, which facilitates the clamping and removal of the shaft core, providing convenience for later inspection and maintenance. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0032] Figure 2 This is a general sectional view of the present invention;
[0033] Figure 3 This is a disassembled diagram of the various components of this utility model;
[0034] Figure 4 This is a three-dimensional structural diagram of the bottom tube;
[0035] Figure 5 This is a three-dimensional structural diagram of the central tube;
[0036] Figure 6 This is a three-dimensional structural diagram of the pipe jacking system;
[0037] Figure 7 This is a three-dimensional structural diagram of the shaft core;
[0038] Figure 8 This is a top view of the central tube;
[0039] Figure 9 This is a top view of the mating of the intermediate tube and the shaft core (with the pores blocked).
[0040] Figure 10 This is a top view of the mating of the intermediate tube and the shaft core (with the air vent open).
[0041] In the diagram, 1. Bottom tube, 101. First convex tube, 102. First plane, 2. Air hole, 3. Middle tube, 301. Second convex tube, 302. Second plane, 303. Second slot, 4. Top tube, 401. Third convex tube, 402. First slot, 5. Tube cover, 6. Connecting tube, 7. Tube cap, 8. Shaft core, 801. Sealing strip, 802. Boss, 803. Non-circular slot, 9. Shaft hole, 10. Arc groove, 11. Air chamber. Detailed Implementation
[0042] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.
[0043] See Figures 1 to 10A soil loosening and aeration improvement device for fruit tree planting includes a vertically arranged tube with an open top. A circular shaft hole 9 is formed along the central axis of the tube. An arc-shaped groove 10 is formed on the inner wall of the tube, with its upper and lower ends extending along the central axis of the tube. The upper end of the arc-shaped groove 10 extends to the top opening of the tube. The cross-section of the arc-shaped groove 10 is fan-shaped. Multiple air holes 2 communicating with the arc-shaped groove 10 are formed on the outer wall of the tube. The multiple air holes 2 are spaced apart along the central axis of the tube. A cylindrical shaft core 8 is slidably inserted into the tube. The shaft core 8 rotates in the shaft hole 9, and its outer wall is slidably connected to the wall of the shaft hole 9. The side wall of the shaft core 8 is also provided with... There is a sealing strip 801. The upper and lower ends of the sealing strip 801 extend along the central axis of the insertion tube. When the shaft core 8 is inserted into the shaft hole 9, the sealing strip 801 is inserted into the arc groove 10. The side wall of the sealing strip 801 that is farthest from the central axis of the shaft core 8 slides and fits into the groove wall of the arc groove 10 that is farthest from the central axis of the shaft core 8. When the shaft core 8 is rotated to one side to the first preset position, the sealing strip 801 abuts against one side of the groove wall of the arc groove 10, so that the shaft core 8 cannot rotate and the sealing strip 801 just blocks the air hole 2. When the shaft core 8 is rotated to the other side to the second preset position, the sealing strip 801 abuts against the other side of the groove wall of the arc groove 10, so that the shaft core 8 cannot rotate and the air hole 2 is not blocked. The top of the insertion tube is detachably sealed with a tube cap 5. When the bottom of the shaft core 8 abuts against the bottom of the insertion tube, the top of the shaft core 8 does not abut against the top of the inner tube cap 5, thus forming an air chamber 11. The top of the shaft core 8 is also provided with a rotating structure for rotating the shaft core 8. The top of the tube cap 5 is also provided with a connecting pipe 6 that connects to the air chamber 11. The connecting pipe 6 is also provided with a sealing component.
[0044] Specifically, the insertion tube includes a bottom tube 1, a top tube 4, and multiple middle tubes 3. The number of middle tubes 3 is determined according to the overall pre-embedding depth of the insertion tube. It should be noted that, for the convenience of illustrating the technical solution of this disclosure, the attached drawings only show the connection state of one middle tube 3, which does not mean that this device contains only one middle tube 3. Those skilled in the art can fully realize the interconnection of multiple middle tubes 3 based on the description of this disclosure and the structure shown in the attached drawings.
[0045] The shaft core 8, bottom tube 1, middle tube 3, and top tube 4 are all made of PVC plastic. The bottom of the bottom tube 1 is sealed and the top is open, the bottom and top of the middle tube 3 are both open, and the bottom and top of the top tube 4 are both open. By default, the inner diameters of the bottom tube 1, middle tube 3, and top tube 4 are the same, and the outer diameters of the bottom tube 1, middle tube 3, and top tube 4 are also the same.
[0046] The bottom pipe 1 is located at the bottom, the top pipe 4 is located at the top, and multiple middle pipes 3 are located between the bottom pipe 1 and the top pipe 4. The multiple middle pipes 3 are connected in series to form an intermediate pipe. The bottom of the intermediate pipe is connected to the top of the bottom pipe 1, and the bottom of the top pipe 4 is connected to the top of the intermediate pipe. The inner walls of the bottom pipe 1, the middle pipe 3, and the top pipe 4 are connected to each other to form the shaft hole 9. The arc-shaped groove 10 is opened from the top opening of the top pipe 4 downward along the central axis of the shaft hole 9 to the bottom of the inner wall of the bottom pipe 1. The pipe cover 5 is detachably sealed on the top of the top pipe 4. The air hole 2 is opened on the middle pipe 3 and the bottom pipe 1. During installation, the bottom pipe 1 and the intermediate pipe are completely buried below the ground, the lower part of the top pipe 4 is buried below the ground, and the upper part of the top pipe 4 is exposed above the ground.
[0047] Specifically, the rotating structure includes a non-circular slot 803 opened on the top of the shaft core 8. The cross-section of the non-circular slot 803 is non-circular, and the non-circular slot 803 is opened downward from the top of the shaft core 8 along the central axis of the shaft core 8.
[0048] Specifically, the top of the shaft core 8 also protrudes upward to form a boss 802, the outer diameter of the boss 802 is smaller than the outer diameter of the shaft core 8, and the non-circular slot 803 is opened downward from the top of the boss 802.
[0049] Preferably, the non-circular slot 803 is a regular hexagonal hole.
[0050] Preferably, the top of the bottom tube 1 also protrudes upward along the central axis of the bottom tube 1 to form a first annular protrusion 101. The inner diameter of the first protrusion 101 is the same as the inner diameter of the bottom tube 1, and the outer diameter of the first protrusion 101 is smaller than the outer diameter of the bottom tube 1. The outer side wall of the first protrusion 101 is also provided with a first plane 102. The first plane 102 can be obtained by cutting. The first plane 102 is obtained by cutting on the outer side wall of the annular first protrusion 101.
[0051] The bottom of the central tube 3 is provided with a second slot 303 along the central axis of the central tube 3. The top of the central tube 3 is also provided with a second annular protrusion tube 301 that protrudes upward along the central axis of the central tube 3. The inner diameter of the second protrusion tube 301 is the same as the inner diameter of the central tube 3. The outer diameter of the second protrusion tube 301 is smaller than the outer diameter of the central tube 3. The outer side wall of the second protrusion tube 301 is also provided with a second plane 302. The second plane 302 can be obtained by cutting. The second plane 302 is obtained by cutting on the outer side wall of the annular second protrusion tube 301.
[0052] The groove wall of the second slot 303 matches the outer wall of the second protruding tube 301, and the groove wall of the second slot 303 matches the outer wall of the first protruding tube 101. The middle tube 3, which is located at the top in the middle tube, is sleeved on the second protruding tube 301 of the adjacent lower middle tube 3 through the second slot 303.
[0053] This allows the bottom of the upper middle tube 3 in the middle tube to fit against the top of the adjacent lower middle tube 3;
[0054] This causes the side wall of the second slot 303 of the upper middle tube 3 in the middle tube to fit against the outer wall of the second protrusion 301 of the adjacent lower middle tube 3.
[0055] This causes the top wall of the second slot 303 of the upper middle tube 3 in the middle tube to fit against the top wall of the second protruding tube 301 of the adjacent lower middle tube 3.
[0056] This makes the arc-shaped groove 10 of the upper middle tube 3 in the middle tube aligned with the arc-shaped groove 10 of the adjacent lower middle tube 3.
[0057] The second slot 303 matches the outer wall of the second protrusion 301, which can quickly align the middle tube 3 with the middle tube 3. The second slot 303 and the second protrusion 301 are bonded together by applying glue.
[0058] The middle tube 3, located at the bottom of the middle tube, is fitted onto the first protruding tube 101 of the bottom tube 1 through the second slot 303.
[0059] This allows the bottom of the middle tube 3 at the bottom of the middle tube to fit against the top of the bottom tube 1.
[0060] This allows the side wall of the second slot 303 of the middle tube 3 at the bottom of the middle tube to fit against the outer wall of the first protruding tube 101.
[0061] This causes the top wall of the second slot 303 of the middle tube 3 at the bottom of the middle tube to fit against the top wall of the first protruding tube 101.
[0062] This makes the arc groove 10 of the intermediate tube aligned with the arc groove 10 of the bottom tube 1.
[0063] The second slot 303 matches the outer wall of the first protruding tube 101, which can quickly align the middle tube 3 with the bottom tube 1. The second slot 303 and the first protruding tube 101 are bonded together by applying glue.
[0064] Preferably, the bottom of the top tube 4 is provided with a first slot 402 extending upward along the central axis of the top tube 4. The wall of the first slot 402 matches the outer wall of the second protruding tube 301. The top tube 4 is fitted onto the second protruding tube 301 of the uppermost middle tube 3 of the middle tube through the first slot 402.
[0065] This allows the bottom of the jacking pipe 4 to fit snugly against the top of the uppermost middle pipe 3 of the intermediate pipe;
[0066] This makes the side wall of the first slot 402 fit against the outer wall of the second convex tube 301 of the uppermost middle tube 3 of the middle tube;
[0067] This makes the top wall of the first slot 402 fit against the top wall of the second convex tube 301 of the uppermost middle tube 3 of the middle tube;
[0068] This makes the arc groove 10 of the jacking pipe 4 aligned with the arc groove 10 of the intermediate pipe.
[0069] The first slot 402 matches the outer wall of the second protruding tube 301, which can quickly align the top tube 4 with the middle tube 3. The first slot 402 and the second protruding tube 301 are bonded together by applying glue.
[0070] Preferably, the top of the jacking pipe 4 also protrudes upward along the central axis of the jacking pipe 4 to form a third annular protrusion 401. The inner diameter of the third protrusion 401 is the same as the inner diameter of the jacking pipe 4, and the outer diameter of the third protrusion 401 is smaller than the outer diameter of the jacking pipe 4. The outer wall of the third protrusion 401 is provided with threads, and the pipe cap 5 is screwed onto the third protrusion 401. The arc groove 10 of the jacking pipe 4 extends upward along the central axis of the jacking pipe 4 to the top of the third protrusion 401.
[0071] The outer diameter of the third convex tube 401 is the same as the outer diameter of the second convex tube 301, and the inner diameter of the third convex tube 401 is the same as the inner diameter of the second convex tube 301, which allows the basic structures of the top tube 4 and the middle tube 3 to be made using the same mold or processing technology.
[0072] Preferably, the outer wall of the connecting pipe is threaded, and the sealing component is a pipe cap 7, which is screwed onto the connecting pipe 6. Alternatively, in cases of higher cost, the pipe cap 7 can be replaced with a quick-connect duct connector.
[0073] Specifically, the outer wall of the shaft core 8 is covered with a polytetrafluoroethylene coating.
[0074] Preferably, the cross-section of the arc-shaped groove 10 can be considered as being formed by rotating and cutting a circle on the inner wall of the insertion tube with the central axis as the center. Correspondingly, the sealing strip 801 is an imperfect cylindrical strip that matches the arc-shaped groove 10.
[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A soil loosening and aeration improvement device for fruit tree planting, characterized in that: The device includes a vertically oriented insertion tube with an open top. A circular shaft hole is formed along the central axis of the insertion tube. An arc-shaped groove is formed on the inner wall of the insertion tube, extending along the central axis at both ends. The upper end of the arc-shaped groove extends to the top opening of the insertion tube. The cross-section of the arc-shaped groove is fan-shaped. Multiple air holes communicating with the arc-shaped groove are also formed on the outer wall of the insertion tube, spaced apart along the central axis. A cylindrical shaft is slidably inserted into the insertion tube, rotating within the shaft hole. The outer wall of the shaft is slidably fitted against the wall of the shaft hole. A sealing strip is provided on the side wall of the shaft, extending along the central axis of the insertion tube at both ends. When the shaft is inserted into the shaft hole, the sealing strip is precisely inserted into the arc-shaped groove. The sealing strip sidewall furthest from the axis of the shaft core slides and fits into the arc groove wall furthest from the axis of the shaft core. When the shaft core rotates to one side to the first preset position, the sealing strip abuts against one side of the arc groove wall, preventing the shaft core from rotating and sealing the vent. When the shaft core rotates to the other side to the second preset position, the sealing strip abuts against the other side of the arc groove wall, preventing the shaft core from rotating and the vent is not blocked. The top of the insertion tube is detachably sealed with a tube cap. When the bottom of the shaft core abuts against the bottom of the insertion tube, the top of the shaft core does not abut against the top of the tube cap, thus forming an air chamber. The top of the shaft core is also provided with a rotating structure for rotating the shaft core. The top of the tube cap is also provided with a connecting pipe connecting to the air chamber, and the connecting pipe is also provided with a sealing component.
2. The soil loosening and aeration improvement device for fruit tree planting according to claim 1, characterized in that: The cannula includes a bottom tube, a top tube, and multiple middle tubes. The bottom tube is sealed at the bottom and open at the top. The bottom and top of the middle tubes are both open, as are the bottom and top of the top tubes. The bottom tube is located at the bottom, and the top tube is located at the top. Multiple middle tubes are located between the bottom tube and the top tube. The multiple middle tubes are connected in series to form an intermediate tube. The bottom of the intermediate tube is connected to the top of the bottom tube, and the bottom of the top tube is connected to the top of the intermediate tube. The inner walls of the bottom tube, the middle tubes, and the top tube are connected to each other to form the shaft hole. The arc-shaped groove extends downward from the top opening of the top tube along the central axis of the shaft hole to the bottom of the inner wall of the bottom tube. The tube cap is detachably sealed on the top of the top tube. The air vents are located on the middle tubes and the bottom tube.
3. The soil loosening and aeration improvement device for fruit tree planting according to claim 2, characterized in that: The top of the bottom tube also protrudes upward along the central axis of the bottom tube to form a first annular protrusion. The outer wall of the first protrusion is also provided with a first flat surface. The bottom of the middle tube also has a second slot opening upward along the central axis of the middle tube. The top of the middle tube also protrudes upward along the central axis of the middle tube to form a second annular protrusion. The outer wall of the second protrusion is also provided with a second flat surface. The groove wall of the second slot matches the outer wall of the second protrusion. The groove wall of the second slot matches the outer wall of the first protrusion. The upper middle tube in the middle tube is fitted onto the second protrusion of the adjacent lower middle tube through the second slot, so that the bottom of the upper middle tube in the middle tube is in contact with the top of the adjacent lower middle tube, thus making the second slot of the upper middle tube in the middle tube... The side groove wall is fitted with the outer side wall of the second convex tube of the adjacent lower middle tube, so that the top groove wall of the second slot of the upper middle tube in the middle tube is fitted with the top wall of the second convex tube of the adjacent lower middle tube, so that the arc groove of the upper middle tube in the middle tube is aligned with the arc groove of the adjacent lower middle tube. The lowermost middle tube of the middle tube is fitted onto the first convex tube of the bottom tube through the second slot, so that the bottom of the lowermost middle tube of the middle tube is fitted with the top of the bottom tube, so that the side groove wall of the second slot of the lowermost middle tube of the middle tube is fitted with the outer side wall of the first convex tube, so that the top groove wall of the second slot of the lowermost middle tube of the middle tube is fitted with the top wall of the first convex tube, so that the arc groove of the middle tube is aligned with the arc groove of the bottom tube.
4. The soil loosening and aeration improvement device for fruit tree planting according to claim 3, characterized in that: The bottom of the top tube is also provided with a first slot along the central axis of the top tube. The wall of the first slot matches the outer wall of the second convex tube. The top tube is fitted onto the second convex tube of the uppermost middle tube through the first slot, so that the bottom of the top tube is in contact with the top of the uppermost middle tube of the middle tube, so that the side wall of the first slot is in contact with the outer wall of the second convex tube of the uppermost middle tube of the middle tube, so that the top wall of the first slot is in contact with the top wall of the second convex tube of the uppermost middle tube of the middle tube, so that the arc groove of the top tube is aligned with the arc groove of the middle tube.
5. The soil loosening and aeration improvement device for fruit tree planting according to claim 4, characterized in that: The top of the jacking pipe also protrudes upward along the central axis of the jacking pipe to form a third annular convex pipe. The outer wall of the third convex pipe is provided with threads, and the pipe cap is screwed onto the third convex pipe. The arc groove of the jacking pipe extends upward along the central axis of the jacking pipe to the top of the third convex pipe. The outer diameter of the third convex pipe is the same as the outer diameter of the second convex pipe, and the inner diameter of the third convex pipe is the same as the inner diameter of the second convex pipe.
6. The soil loosening and aeration improvement device for fruit tree planting according to claim 5, characterized in that: The outer wall of the connecting pipe is threaded, and the sealing component is a pipe cap, which is screwed onto the connecting pipe.
7. The soil loosening and aeration improvement device for fruit tree planting according to claim 6, characterized in that: The rotating structure includes a non-circular slot opened at the top of the shaft core. The cross-section of the non-circular slot is non-circular, and the non-circular slot is opened downward from the top of the shaft core along the central axis of the shaft core.
8. The soil loosening and aeration improvement device for fruit tree planting according to claim 7, characterized in that: The top of the shaft core also protrudes upward to form a boss, the outer diameter of which is smaller than the outer diameter of the shaft core, and the non-circular slot is opened downward from the top of the boss.
9. A soil loosening and aeration improvement device for fruit tree planting according to claim 8, characterized in that: The non-circular slot is a regular hexagonal hole.
10. A soil loosening and aeration improvement device for fruit tree planting according to any one of claims 1-9, characterized in that: The outer wall of the shaft is covered with a polytetrafluoroethylene coating.