A soil plug-preventing hole-punching needle structure for facility agriculture root injection soil disinfection

Abstract

This invention patent relates to the technical field of soil disinfection equipment for facility agriculture, and specifically discloses a soil-blocking and hole-punching needle structure for root-injection soil disinfection in facility agriculture. It includes an outer shell, with an automatic soil-removing feeding component slidably connected inside. A reset component is installed inside the outer shell, with its bottom end mounted on the outer surface of the feeding component, and the bottom of the inner wall of the feeding component abutting against the lower surface of the outer shell. Pushing the outer shell downwards causes the feeding component to first insert into the soil to create a hole. Further downward pressure triggers the feeding component to open the feed inlet, injecting liquid fertilizer into the deeper soil. After fertilization, the worker lifts the outer shell, at which point the reset component resets the feeding component, simultaneously pushing out any remaining soil inside the outer shell. This achieves integrated hole-punching, fertilization, and soil removal operations, eliminating the need for additional cleaning of blocking soil. Therefore, it improves the operating efficiency and anti-clogging practicality of the device.

Description

Technical Field

[0001] This invention patent relates to the technical field of soil disinfection equipment for facility agriculture, and in particular to a structure for preventing soil blockage and puncturing needles for root-injection soil disinfection in facility agriculture. Background Technology

[0002] Facility agriculture, as an efficient and controllable agricultural production model, plays a crucial role in ensuring a stable year-round supply of agricultural products. However, due to the characteristics of dense cropping, enclosed environment, and suitable temperature and humidity, the soil in facility agriculture is prone to accumulate harmful organisms such as soil-borne pathogens, root-knot nematodes, and weed seeds, leading to increasingly prominent problems of continuous cropping obstacles, which seriously restrict the improvement of crop yield and quality.

[0003] Soil disinfection is one of the key technical means to solve the problem of continuous cropping obstacles in facility agriculture. Among them, root-injection soil disinfection technology has become an important local precision disinfection method because it can accurately and centrally apply disinfectants (such as chloropicrin, dazomet, and methamidophos) to the main distribution layer of the crop root zone. It has advantages such as high agent utilization rate, strong targeting, and relatively small impact on the environment of non-target areas. The core operating tool of this technology is the puncture needle, which is used to puncture the soil to be disinfected to form injection channels so that liquid disinfectant can be injected to a predetermined depth.

[0004] Currently, common root-injection needles typically consist of a hollow needle tube and a lateral or axial outlet at its end. In actual operation, especially in conditions of high soil moisture and heavy viscosity, the moist soil easily clogs the inlet during the needle's insertion and withdrawal. This clogging leads to a series of prominent problems: First, it prevents the disinfectant from being injected smoothly or results in insufficient injection volume, directly affecting the uniformity and thoroughness of the disinfection effect; second, to clear the blockage, operators need to frequently stop the machine for cleaning, greatly reducing work efficiency and increasing labor intensity; third, unforeseen blockages may cause abnormally high injection pressure, posing certain safety risks and potentially damaging the associated injection equipment; finally, uneven injection caused by blockages may also lead to localized phytotoxicity or disinfection dead zones, affecting subsequent crop growth.

[0005] While existing technologies have attempted some improvements to address the clogging problem of acupuncture needles, such as increasing the orifice diameter, changing the opening direction, or adding a simple soil-retaining structure at the needle tip, these methods often have limited anti-clogging effects or have failed to gain widespread application due to their complex structure, high manufacturing cost, or impact on puncture resistance. Therefore, designing a reasonably structured acupuncture needle that effectively prevents clogging without compromising puncture efficiency has become a pressing technical problem that needs to be solved to improve the reliability and practicality of root-injection soil disinfection technology.

[0006] Against this backdrop, the present invention addresses the shortcomings of existing root-injection soil disinfection acupuncture needles that are easily blocked by soil, and proposes an innovative acupuncture needle structure that prevents soil blockage. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a soil-preventing hole-punching needle structure for root-injection soil disinfection in facility agriculture. This solves the technical problem that existing hole-punching needles often have open-designed feed inlets, which are easily blocked by loose soil when inserted into the soil.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A soil-preventing hole-clogging needle structure for root-injection soil disinfection in facility agriculture includes an outer shell, an automatic soil-removing feeding component slidably connected inside the outer shell, a reset component installed inside the outer shell, the bottom end of the reset component being mounted on the outer surface of the feeding component, and the bottom of the inner wall of the feeding component abutting against the lower surface of the outer shell.

[0010] Preferably, the feeding assembly includes a top plate, which is slidably connected to the inside of the outer shell. A through hole is formed on the upper surface of the top plate, and a connecting sleeve is inserted into the through hole. A connecting rod is installed on the lower surface of the top plate, and a slot is formed inside the connecting rod. A rotating rod is rotatably connected to the inner wall of the outer shell. A connecting block is installed on the outer surface of the rotating rod, and two sets of rotating rods are rotatably connected inside the connecting block. A fixing rod is installed on the outer surface of each set of rotating rods, and a hinge is hinged to the front end of each set of fixing rods. The left set... The lower surface of the hinge is installed on the bottom of the inner wall of the connecting rod slot. A push rod is installed on the lower surface of the right-side set of hinges. A fixing block is installed on the lower surface of the connecting rod. A guide cone is installed on the lower surface of the fixing block. The bottom of the inner wall of the guide cone abuts against the lower surface of the outer shell. A guide port is opened on the upper surface of the guide cone. A slot is opened on the upper surface of the guide cone. The bottom end of the push rod is inserted into the guide cone. The outer surface of the bottom end of the push rod is parallel to the outer surface of the guide cone. The slot of the guide cone is located at the lower end of its own guide port.

[0011] Preferably, the reset assembly includes an annular fixing plate, which is installed on the inner wall of the outer casing. A reset spring is installed on the lower surface of the annular fixing plate, and the bottom end of the reset spring is installed on the upper surface of the top plate. The reset spring is sleeved on the outer end of the connecting sleeve.

[0012] Preferably, a limiting ring is installed on the inner wall of the outer shell, the inner wall of the limiting ring is attached to the outer wall of the fixing block, and the position of the limiting ring is located on the moving path of the guide cone and the connecting rod.

[0013] Preferably, the outer wall of the connecting sleeve is provided with a feeding hole, and a feeding pipe is installed inside the feeding hole of the connecting sleeve.

[0014] Preferably, an annular baffle is installed at the bottom of the inner wall of the guide cone, and the inner wall of the annular baffle is attached to the outer surface of the outer shell.

[0015] Preferably, the outer surface of the annular baffle is curved, and the outer curvature of the annular baffle is parallel to the outer curvature of the guide cone.

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

[0017] 1. During operation, the outer casing moves downwards, and the guide cone first inserts into the soil. The outer casing continues to press down, while the top plate slides upwards relative to the guide cone, causing the connecting rod to move upwards. Rotating rod one then rotates clockwise, driving two sets of rotating rods two to unfold via the connecting block. The right-side rotating rod two drives the push rod 206 to slide downwards, closing the guide cone's feed inlet and completing the pit-filling action. This prevents soil from blocking the feed inlet and achieves automatic soil removal. After reaching the pit-filling depth, the outer casing lifts up, the reset assembly pushes the top plate downwards, and all components move in opposite directions. The push rod slides upwards to reopen the feed inlet, at which point the spraying action begins, improving the device's practicality.

[0018] Second, the top plate moves upward to compress the return spring. The return spring stores elastic potential energy. When fertilization is completed, the outer shell is lifted by external force to release the elastic potential energy, which drives the top plate to move downward quickly, so that the feeding component is reset. This ensures the synchronization of the soil removal action and the hole-drilling action, and avoids the accumulation of soil residue.

[0019] The above description is only an overview of the technical solution of this invention. In order to better understand the technical means of this invention and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached image description:

[0020] Figure 1 This is a front cross-sectional view of the present invention patent; Figure 2 This is a side cross-sectional view of the present invention patent; Figure 3 This is a front view of the connecting block in this invention patent; Figure 4 This invention patent Figure 2 Enlarged view of point A in the middle.

[0021] Legend: 1. Outer shell; 2. Feeding assembly; 201. Guide cone; 202. Top plate; 203. Connecting sleeve; 204. Connecting rod; 205. Connecting block; 206. Push rod; 207. Fixing block; 208. Rotating rod one; 209. Fixing rod; 210. Hinge; 211. Rotating rod two; 3. Limiting ring; 4. Reset assembly; 401. Reset spring; 402. Annular fixing plate; 5. Feeding pipe; 6. Annular baffle. Detailed Implementation

[0022] This application provides a soil-blocking hole-punching needle structure for root-injection soil disinfection in facility agriculture, which effectively solves the technical problem that existing hole-punching needles have mostly open-designed feed inlets, which are easily blocked by loose soil when inserted into the soil. Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem that the existing puncture needles mostly have open-design guide ports, which are easily blocked by loose soil when inserted into the soil. The overall idea is as follows: In response to the problems existing in the prior art, this invention provides a puncture needle structure for root-injection soil disinfection in facility agriculture that prevents soil blockage. It includes an outer shell 1, an automatic soil-removing feeding component 2 that is slidably connected inside the outer shell 1, and a reset component 4 installed inside the outer shell 1. The bottom end of the reset component 4 is installed on the outer surface of the feeding component 2, and the bottom of the inner wall of the feeding component 2 abuts against the soil. The lower surface of the outer shell 1; specifically, by pushing the outer shell 1 to move it downward, the feeding component 2 is triggered and the reset component 4 is compressed, the guide port is closed to prevent soil from entering the guide port, and the soil is removed relative to the previous working cycle. When the hole-punching action is completed, that is, when the hole-punching needle reaches the predetermined working depth, the outer shell 1 is lifted. At this time, the reset component 4 is released, which drives the feeding component 2 to reset. At this time, the guide port is opened to carry out the spraying action, thereby realizing the integrated operation of hole-punching, pesticide application and soil removal, without the need for additional cleaning of the blocking soil, thus improving the operating efficiency and anti-clogging practicality of the device.

[0024] The feeding assembly 2 includes a top plate 202, which is slidably connected to the inside of the outer shell 1. A through hole is formed on the upper surface of the top plate 202, and a connecting sleeve 203 is inserted into the through hole. A connecting rod 204 is installed on the lower surface of the top plate 202, and a slot is formed inside the connecting rod 204. A rotating rod 208 is rotatably connected to the inner wall of the outer shell 1. A connecting block 205 is installed on the outer surface of the rotating rod 208. Two sets of rotating rods 211 are rotatably connected inside the connecting block 205. A fixing rod 209 is installed on the outer surface of each set of rotating rods 211, and a hinge 210 is hinged to the front end of each set of fixing rods 209. (The last sentence appears to be incomplete and possibly refers to a different component.) The lower surface of the hinge 210 is installed on the bottom of the inner wall of the slot of the connecting rod 204. A push rod 206 is installed on the lower surface of the right hinge 210. A fixing block 207 is installed on the lower surface of the connecting rod 204. A guide cone 201 is installed on the lower surface of the fixing block 207. The bottom of the inner wall of the guide cone 201 abuts against the lower surface of the outer shell 1. A guide port is opened on the upper surface of the guide cone 201. A slot is opened on the upper surface of the guide cone 201. The bottom end of the push rod 206 is inserted into the inside of the guide cone 201. The outer surface of the bottom end of the push rod 206 is parallel to the outer surface of the guide cone 201. The slot of the guide cone 201 is located at the lower end of its own guide port.

[0025] Specifically, during operation, the outer casing 1 moves downwards, and the guide cone 201 first inserts into the soil. The outer casing 1 continues to press down, while the top plate 202 slides upwards relative to the guide cone 201, causing the connecting rod 204 to move upwards. The rotating rod 208 then rotates clockwise, driving the two sets of rotating rods 211 to unfold via the connecting block 205. The right rotating rod 211 drives the push rod 206 to slide downwards, closing the guide port of the guide cone 201 and completing the pit-planting action. This prevents soil from blocking the guide port and achieves automatic soil removal. After reaching the pit-planting depth, the outer casing 1 is lifted, and the reset assembly 4 pushes the top plate 202 downwards. All components move in opposite directions, and the push rod 206 slides upwards to reopen the guide port, at which point the spraying action is performed, improving the practicality of the device.

[0026] The reset assembly 4 includes an annular fixing plate 402, which is installed on the inner wall of the outer shell 1. A reset spring 401 is installed on the lower surface of the annular fixing plate 402. The bottom end of the reset spring 401 is installed on the upper surface of the top plate 202. The reset spring 401 is sleeved on the outer end of the connecting sleeve 203. Specifically, when the outer shell 1 is pressed down, the top plate 202 moves up and compresses the reset spring 401. The reset spring 401 stores elastic potential energy. When the hole-piercing action is completed, the outer shell 1 is lifted up, and the reset spring 401 releases elastic potential energy, causing the top plate 202 to move down quickly, so that the feeding assembly 2 is reset. At this time, the spraying action is performed to ensure the synchronization of the soil removal action and the hole-piercing action and avoid soil residue accumulation.

[0027] A limiting ring 3 is installed on the inner wall of the outer casing 1. The inner wall of the limiting ring 3 is attached to the outer wall of the fixing block 207. The limiting ring 3 is located on the movement path of the guide cone 201 and the connecting rod 204. Specifically, the limiting ring 3 can restrict the sliding trajectory of the fixing block 207 to prevent the feeding assembly 2 from shifting or jamming during operation. By positioning the limiting ring 3 on the movement path of the guide cone 201 and the connecting rod 204, the limiting ring 3 restricts the movement path of the guide cone 201 and the connecting rod 204, preventing excessive movement of the guide cone 201 and the connecting rod 204 during use, which could damage the internal equipment of the outer casing 1.

[0028] The outer wall of the connecting sleeve 203 is provided with a feeding hole, and a feeding pipe 5 is installed inside the feeding hole of the connecting sleeve 203. Specifically, liquid fertilizer enters the connecting sleeve 203 through the feeding pipe 5. After the guide cone 201 opens, the fertilizer is injected into the deep soil along the connecting sleeve 203 and the guide cone 201, thereby ensuring the smooth delivery of fertilizer.

[0029] An annular baffle 6 is installed at the bottom of the inner wall of the guide cone 201. The inner wall of the annular baffle 6 is attached to the outer surface of the outer shell 1. Specifically, the annular baffle 6 can isolate the outer shell 1 from the soil during the hole-making process, preventing soil from entering the interior of the outer shell 1 and accumulating. At the same time, its attachment structure can scrape off the soil residue on the outer wall of the outer shell 1, further improving the anti-clogging effect.

[0030] The outer surface of the annular baffle 6 is curved, and the outer curvature of the annular baffle 6 is parallel to the outer curvature of the guide cone 201. Specifically, the curved transition surface makes the outer contour of the annular baffle 6 consistent with that of the guide cone 201, which not only prevents the annular baffle 6 from hooking up the soil when drilling, but also ensures the tight fit between the annular baffle 6 and the outer shell 1.

[0031] Working principle:

[0032] In the first step, during operation, the outer shell 1 moves downward, and the guide cone 201 inserts into the soil. At this time, the outer shell 1 continues to press down, and the top plate 202 slides upward relative to the guide cone 201, causing the connecting rod 204 to move upward. The rotating rod 208 rotates clockwise, and through the connecting block 205, it drives the two sets of rotating rods 211 to unfold. The right rotating rod 211 drives the push rod 206 to slide downward, and the guide port of the guide cone 201 closes, completing the pit-piercing action. This prevents soil from blocking the guide port and achieves automatic soil removal. After reaching the pit-piercing depth, the outer shell 1 is lifted, and the reset component 4 pushes the top plate 202 downward. All components move in the opposite direction, and the push rod 206 slides upward to reopen the guide port. At this time, the spraying action is performed.

[0033] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, any obvious variations or modifications derived therefrom are still within the scope of protection of this invention patent.

Claims

1. A soil-preventing hole-clogging needle structure for root-injection soil disinfection in facility agriculture, comprising an outer shell (1), characterized in that: in, The outer shell (1) is slidably connected to an automatic soil-removing feeding assembly (2). A reset assembly (4) is installed inside the outer shell (1). The bottom end of the reset assembly (4) is installed on the outer surface of the feeding assembly (2). The bottom of the inner wall of the feeding assembly (2) abuts against the lower surface of the outer shell (1).

2. The anti-soil-clogging needle structure for root-injection soil disinfection in facility agriculture as described in claim 1, characterized in that, in, The feeding assembly (2) includes a top plate (202), which is slidably connected to the inside of the outer shell (1). The upper surface of the top plate (202) has a through hole, and a connecting sleeve (203) is inserted into the through hole of the top plate (202). A connecting rod (204) is installed on the lower surface of the top plate (202), and a slot is opened inside the connecting rod (204). A rotating rod (208) is rotatably connected to the inner wall of the outer shell (1). A connecting block (205) is installed on the outer surface of the rotating rod (208). Two sets of rotating rods (211) are rotatably connected inside the connecting block (205). A fixing rod (209) is installed on the outer surface of both sets of rotating rods (211). A hinge (210) is hinged to the front end of both sets of fixing rods (209). The left set of the two sets of rotating rods (211) is connected to the connecting rod (209). The lower surface of the hinge (210) is installed at the bottom of the inner wall of the groove of the connecting rod (204). A push rod (206) is installed on the lower surface of the right-side set of hinges (210). A fixing block (207) is installed on the lower surface of the connecting rod (204). A guide cone (201) is installed on the lower surface of the fixing block (207). The bottom of the inner wall of the guide cone (201) abuts against the lower surface of the outer shell (1). A guide port is opened on the upper surface of the guide cone (201). A groove is opened on the upper surface of the guide cone (201). The bottom end of the push rod (206) is inserted into the interior of the guide cone (201). The outer surface of the bottom end of the push rod (206) and the outer surface of the guide cone (201) are parallel to each other, which can form a blocking seal. The groove of the guide cone (201) is located at the lower end of its own guide port.

3. The anti-soil-blocking needle structure for root-injection soil disinfection in facility agriculture as described in claim 2, characterized in that: in, The reset assembly (4) includes an annular fixing plate (402), which is installed on the inner wall of the outer shell (1). A reset spring (401) is installed on the lower surface of the annular fixing plate (402), and the bottom end of the reset spring (401) is installed on the upper surface of the top plate (202). The reset spring (401) is sleeved on the outer end of the connecting sleeve (203).

4. The anti-soil-blocking needle structure for root-injection soil disinfection in facility agriculture as described in claim 2, characterized in that: in, A limiting ring (3) is installed on the inner wall of the outer shell (1). The inner wall of the limiting ring (3) is attached to the outer wall of the fixing block (207). The position of the limiting ring (3) is located on the moving path of the guide cone (201) and the connecting rod (204).

5. The anti-soil-blocking needle structure for root-injection soil disinfection in facility agriculture as described in claim 2, characterized in that: in, The outer wall of the connecting sleeve (203) is provided with a feeding hole, and a feeding pipe (5) is installed inside the feeding hole of the connecting sleeve (203).

6. The anti-soil-blocking needle structure for root-injection soil disinfection in facility agriculture as described in claim 2, characterized in that: in, An annular baffle (6) is installed at the bottom of the inner wall of the flow guide cone (201), and the inner wall of the annular baffle (6) is attached to the outer surface of the outer shell (1).

7. The anti-soil-blocking needle structure for root-injection soil disinfection in facility agriculture as described in claim 6, characterized in that: in, The outer surface of the annular baffle (6) is provided with an arc, and the outer arc of the annular baffle (6) is parallel to the outer arc of the guide cone (201).

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