Fertilizer packaging auxiliary equipment

By designing auxiliary equipment such as fertilizer storage hoppers, material collection channels, and cylindrical transfer silos, combined with cylindrical valve bodies and intermittent flipping structures, the problems of inconsistent weight and high operational difficulty in traditional fertilizer packaging have been solved, achieving precise control and efficient packaging.

CN223591036UActive Publication Date: 2025-11-25YUNNAN YUANTIAN BIO GRP FERTILIZER CO LTD
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Patent Information

Application Number
CN202423253627.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-28
Publication Date
2025-11-25
Estimated Expiration
2034-12-28

AI Technical Summary

Technical Problem

Traditional fertilizer packaging methods lack precise control and flexibility, resulting in inconsistent weights for each bag of fertilizer. This affects standardized production and market sales, and also leads to fertilizer waste and operational difficulties.

Method used

An auxiliary device including a fertilizer storage hopper, a material collection channel, a cylindrical transfer hopper, and a discharge hopper was designed. Combining a cylindrical valve body and an intermittent flipping structure, the cylindrical valve body is driven to flip 90 degrees by a servo motor, and a flexible transmission structure is used to achieve precise control and flexible material discharge.

Benefits of technology

This has achieved stability in the weight of each fertilizer bag and improved packaging efficiency, reduced the difficulty of manual operation, avoided fertilizer waste and site chaos, and improved production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of fertilizer packaging, and discloses a fertilizer packaging auxiliary device which comprises a fertilizer storage hopper, a material gathering channel, a cylindrical transfer bin and a discharging hopper which are sequentially communicated from top to bottom, and further comprises a cylindrical valve body, a first valve rod and a second valve rod, the cylindrical valve body is provided with quartered annularly-distributed fertilizer containing cavities corresponding to the cylindrical outer surface; the intermittent overturning structure is arranged on the outer side of the cylindrical transfer bin and connected with the cylindrical valve body, and a main body of the intermittent overturning structure is composed of a tooth-missing gear, a transmission connecting shaft and a servo motor; the elastic transmission structure is arranged between the tooth-missing gear and the transmission connecting shaft, the elastic transmission structure is used for relieving or recovering transmission of the intermittent overturning structure to the cylindrical valve body, and through the fertilizer containing cavity in the cylindrical valve body and the intermittent overturning structure, the amount of fertilizer falling into the discharging hopper is stable, and the specification is the same; and the weight consistency of the fertilizer in each fertilizer packaging bag is ensured.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fertilizer packaging, and specifically to a fertilizer packaging auxiliary equipment. BACKGROUND

[0002] In the fertilizer production industry, the packaging of fertilizer is an important link, and its packaging quality and efficiency directly affect the market competitiveness and production cost of products. Traditional fertilizer packaging methods mostly rely on manual operation or simple mechanical devices, and have many problems.

[0003] Traditional fertilizer packaging is to directly pour fertilizer into a packaging bag through a simple funnel type discharging device. Only the basic transfer problem of fertilizer from the storage container to the packaging bag is solved, and the precise control of the fertilizer discharging amount and the efficiency and flexibility in the packaging process are not considered. In actual operation, due to the differences in size, shape and fluidity of fertilizer particles, etc., the use of this simple discharging method is easy to cause the weight of each package of fertilizer to be inconsistent, which seriously affects the standardized production and market sales of products, and may cause customers to question and complain about the product quality. Moreover, this simple packaging machine lacks effective control mechanism for the discharging process, and cannot stop discharging in time when replacing the packaging bag, causing waste of fertilizer and confusion in the packaging site, and also increasing the difficulty and labor intensity of manual operation and reducing the production efficiency.

[0004] In addition, the traditional fertilizer packaging equipment also has deficiencies in the transmission and temporary storage of fertilizer. Fertilizer is easy to scatter and accumulate during conveying, causing uneven discharging, further affecting the packaging efficiency and quality. Therefore, we propose a fertilizer packaging auxiliary equipment. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides a fertilizer packaging auxiliary equipment to solve the above problems.

[0007] (II) Technical solutions

[0008] To achieve the above purposes, the utility model provides the following technical solutions: a fertilizer packaging auxiliary equipment, comprising fertilizer storage hoppers, material gathering channels, cylindrical transfer warehouses and discharging hoppers which are sequentially communicated from top to bottom, further comprising:

[0009] The cylindrical valve body is horizontally and rotatably connected in the cylindrical transfer bin, and the outer surface of the cylindrical valve body is attached to the inner wall of the cylindrical transfer bin. The cylindrical valve body is provided with four equal parts of annularly distributed fertilizer holding cavities corresponding to the outer surface of the cylinder. The fertilizer holding cavity on the upper side of the cylindrical valve body is in communication with the fan-shaped space and the material gathering channel formed by the cylindrical transfer bin. The fan-shaped space formed by the fertilizer holding cavity on the lower side of the cylindrical valve body is in communication with the lower hopper.

[0010] The intermittent overturning structure is arranged outside the cylindrical transfer bin and connected with the cylindrical valve body. The main body of the intermittent overturning structure is composed of a toothless gear, a transmission connecting shaft and a servo motor. The intermittent overturning structure is used to drive the cylindrical valve body to overturn at intervals by ninety degrees.

[0011] The elastic transmission structure is arranged between the toothless gear and the transmission connecting shaft. The elastic transmission structure is used to release or restore the transmission of the intermittent overturning structure to the cylindrical valve body.

[0012] Preferably, the fan-shaped arc of each group of fertilizer holding cavities on the cylindrical valve body is ninety degrees. The interior of the material gathering channel is in the shape of converging from wide to narrow. The curvature of the communication part between the bottom end of the material gathering channel and the cylindrical transfer bin is smaller than the curvature of the fertilizer holding cavity. The lower hopper is in the shape of converging from wide to narrow as a whole.

[0013] Preferably, the intermittent overturning structure includes a driven gear, a toothless gear, a transmission connecting shaft and a servo motor. The end side of the cylindrical transfer bin is rotatably installed with a driven gear corresponding to one end side of the cylindrical valve body. The driven gear is fixedly connected with a connecting shaft between the driven gear and the cylindrical valve body. The outer side of the cylindrical transfer bin corresponding to the parallel side of the cylindrical valve body is fixedly installed with a servo motor. The output shaft of the servo motor is fixedly connected with a transmission connecting shaft. The toothless gear is sleeved with the transmission connecting shaft through an elastic transmission structure. The toothless gear is provided with gear teeth in the shape of a circular arc on the outer circular surface of the toothless gear and can be engaged with the driven gear. The circular arc of the gear teeth on the toothless gear is ninety degrees.

[0014] Preferably, the shaft centers of the toothless gear and the driven gear are on the same horizontal line.

[0015] Preferably, the elastic transmission structure includes a transmission clamping block, a transmission transverse groove and a return spring. The center of the toothless gear is provided with a circular hole for sleeving on the transmission connecting shaft. The transmission connecting shaft is provided with upper and lower symmetrical transmission transverse grooves corresponding to the top and bottom outer surfaces. The toothless gear is fixedly provided with a transmission clamping block integrally slidingly clamped in the transmission transverse groove corresponding to the top inside and bottom inner wall of the circular hole. The transmission clamping block in the toothless gear is attached to the inner wall of the end face of the transmission transverse groove close to the servo motor. The end face inner wall of the transmission transverse groove away from the servo motor is fixedly connected with the transmission clamping block through a return spring.

[0016] Preferably, the elastic transmission structure further includes an electric telescopic rod. An electric telescopic rod parallel to the transmission shaft is fixedly installed on the outer wall of the end face of the servo motor on one side corresponding to the transmission shaft, and the piston shaft end face of the electric telescopic rod is in contact with the end face of the toothed gear near the servo motor.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a fertilizer packaging auxiliary device, which has the following beneficial effects:

[0019] Precise control of fertilizer packaging weight: Through the fertilizer holding chamber on the cylindrical valve body and the intermittent flipping structure, each flip is 90 degrees, ensuring that the amount of fertilizer falling into the hopper is stable and of the same size. This guarantees that the fertilizer weight in each fertilizer bag is consistent, effectively improving the accuracy and stability of the fertilizer packaging weight of the same batch, enhancing the quality of the finished fertilizer packaging, facilitating standardized production and market sales, and avoiding quality problems or customer complaints caused by fertilizer weight differences.

[0020] The efficient fertilizer feeding process features a rationally designed structure for the fertilizer storage hopper, material gathering channel, cylindrical transfer chamber, and feeding hopper. Fertilizer in the storage hopper smoothly passes through the material gathering channel into the cylindrical transfer chamber and accurately falls into the fertilizer holding cavity, achieving orderly transportation and temporary storage of fertilizer and improving fertilizer packaging efficiency. Furthermore, during the intermittent time of the cylindrical valve body's rotation, the empty fertilizer holding cavity can be filled with fertilizer, making the entire feeding process smoother, reducing pauses and waiting time during fertilizer packaging, and further improving production efficiency.

[0021] Flexible feeding control mechanism: The electric telescopic rod in the elastic transmission structure, along with components such as the toothed gear and transmission shaft, ensures excellent controllability during the feeding process. When a new bag needs to be replaced after the packaging bag is full, the electric telescopic rod pushes the toothed gear laterally, disengaging it from the driven gear and stopping the feeding, thus avoiding fertilizer waste and chaos at the packaging site. When a new bag is in place, the toothed gear is reset by a return spring, quickly resuming the feeding operation. This flexible control method adapts to the intermittent operation requirements of fertilizer packaging, improving the practicality and reliability of the equipment and reducing the difficulty and labor intensity of manual operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the cylindrical valve body structure of this utility model;

[0025] Figure 4 It is the cross section schematic view of the cylinder transfer bin of the utility model;

[0026] Figure 5 It is the exploded schematic view of the elastic transmission structure of the utility model.

[0027] In the figure: 1, fertilizer storage hopper; 2, material gathering channel; 3, cylindrical transfer bin; 4, discharge hopper; 5, cylindrical valve body; 6, fertilizer containing cavity; 7, driven gear; 8, missing tooth gear; 9, transmission connecting shaft; 10, servo motor; 11, round hole; 12, transmission clamping block; 13, transmission transverse groove; 14, return spring; 15, electric telescopic rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1-5 A kind of fertilizer packaging auxiliary equipment, including fertilizer storage hopper 1 from top to bottom sequentially communicated, material gathering channel 2, cylindrical transfer bin 3 and discharge hopper 4, further include:

[0030] Cylindrical valve body 5, it is horizontally connected in rotation in cylindrical transfer bin 3, and the outer surface of cylindrical valve body 5 is attached with the inner wall of cylindrical transfer bin 3, and the fertilizer containing cavity 6 of four equal parts is set in cylindrical valve body 5 corresponding cylindrical outer surface and is annularly distributed, the fertilizer containing cavity 6 of one side above cylindrical valve body 5 is communicated with the fan-shaped space formed by cylindrical transfer bin 3 and material gathering channel 2, and the fan-shaped space formed by the fertilizer containing cavity 6 of same side below cylindrical valve body 5 and cylindrical transfer bin 3 is communicated with discharge hopper 4;

[0031] Interruption type turnover structure is arranged on the outside of cylindrical transfer bin 3 and is connected with cylindrical valve body 5, wherein the main body of the interruption type turnover structure is composed of missing tooth gear 8, transmission connecting shaft 9 and servo motor 10, and the interruption type turnover structure is used to drive cylindrical valve body 5 to turn over at intervals by ninety degrees;

[0032] Elastic transmission structure is arranged between missing tooth gear 8 and transmission connecting shaft 9, and the elastic transmission structure is used to release or restore the transmission of the interruption type turnover structure to cylindrical valve body 5.

[0033] The fan-shaped arc of each group of fertilizer holding cavities 6 on the cylindrical valve body 5 is ninety degrees, the inside of the material gathering channel 2 is converging from wide at the top to narrow at the bottom, and the arc of the communication between the bottom end of the material gathering channel 2 and the cylindrical transfer bin 3 is smaller than the arc of the fertilizer holding cavity 6. The whole of the discharge hopper 4 is converging from wide at the top to narrow at the bottom. The design of the material gathering channel 2 being converging from wide at the top to narrow at the bottom is conducive to more concentratedly guiding the fertilizer in the fertilizer storage hopper 1 to the cylindrical transfer bin 3, reducing the scattering and accumulation of the fertilizer in the transmission process, and improving the efficiency and accuracy of the fertilizer transmission. The arc of the communication between the bottom end of the material gathering channel 2 and the cylindrical transfer bin 3 is smaller than the arc of the fertilizer holding cavity 6, so that the fertilizer can accurately fall into the fertilizer holding cavity 6, avoiding the overflow of the fertilizer to other areas. The discharge hopper 4 is converging from wide at the top to narrow at the bottom, which helps the fertilizer maintain a stable flow rate and flow direction during the falling process, so that the fertilizer can smoothly enter the packaging bag, while also reducing the dust and splashing of the fertilizer during the falling process, ensuring the cleanliness and safety of the packaging site, and further optimizing the overall process of the fertilizer packaging.

[0034] The intermittent overturning structure includes a driven gear 7, a missing tooth gear 8, a transmission connecting shaft 9 and a servo motor 10. The end side of the cylindrical transfer bin 3 corresponding to one end side of the cylindrical valve body 5 is rotatably installed with the driven gear 7, and the driven gear 7 is fixedly connected with the cylindrical valve body 5 through a connecting shaft. The outer side of the cylindrical transfer bin 3 corresponding to the cylindrical valve body 5 is fixedly installed with the servo motor 10, and the output shaft of the servo motor 10 is fixedly connected with the transmission connecting shaft 9. The transmission connecting shaft 9 is sleeved with the missing tooth gear 8 through an elastic transmission structure. The missing tooth gear 8 is provided with gear teeth in a circular arc distribution on the outer circular surface and can engage with the driven gear 7. The arc of the gear teeth on the missing tooth gear 8 is ninety degrees. The driven gear 7 is a direct driving component of the cylindrical valve body 5. Through the engagement with the missing tooth gear 8, the power of the servo motor 10 is transmitted to the cylindrical valve body 5 to realize the intermittent overturning of the cylindrical valve body 5. The special design of the missing tooth gear 8, i.e. only the ninety-degree circular arc surface is provided with gear teeth, so that during one rotation, the missing tooth gear 8 only engages with the driven gear 7 within the ninety-degree range, thereby driving the cylindrical valve body 5 to accurately overturn ninety degrees, ensuring that the fertilizer holding cavity 6 can accurately complete the loading, transportation and discharging of the fertilizer. This accurate transmission structure design is one of the key links to realize the accurate packaging of the fertilizer, ensuring the stable operation and efficient work of the whole equipment.

[0035] The shaft centers of the missing tooth gear 8 and the driven gear 7 are on the same horizontal line.

[0036] The elastic transmission structure comprises a transmission block 12, a transmission transverse groove 13 and a return spring 14, a circular hole 11 is arranged at the center of the missing tooth gear 8 for sleeving the transmission connecting shaft 9, the transmission connecting shaft 9 is provided with the transmission transverse groove 13 symmetrically arranged on the top and bottom outer surfaces, the transmission block 12 is integrally and slidably clamped in the transmission transverse groove 13 and is fixed on the top inner part and the bottom inner wall of the circular hole 11 of the missing tooth gear 8, the transmission block 12 and the transmission transverse groove 13 are close to the end face inner wall of the side of the missing tooth gear 8 close to the servo motor 10, and the return spring 14 is fixedly connected between the end face inner wall of the side of the transmission transverse groove 13 away from the servo motor 10 and the transmission block 12; the transmission block 12 and the transmission transverse groove 13 are matched to realize the reliable connection and synchronous rotation between the missing tooth gear 8 and the transmission connecting shaft 9. When the transmission connecting shaft 9 rotates, the missing tooth gear 8 is driven to rotate through the sliding of the transmission block 12 in the transmission transverse groove 13. The function of the return spring 14 is crucial, which provides a restoring force for the missing tooth gear 8. In the normal working state, the return spring 14 keeps the transmission block 12 on the side of the transmission transverse groove 13 close to the servo motor 10, ensuring the stable transmission of the missing tooth gear 8 and the transmission connecting shaft 9. When the transmission needs to be removed, such as replacing the gap of the packaging bag, the missing tooth gear 8 is transversely moved through the action of other components, at this time, the transmission block 12 compresses the return spring 14, when the transmission needs to be restored again, the elastic force of the return spring 14 can make the missing tooth gear 8 return to the original position, continue to engage with the driven gear 7, and realize the intermittent unloading function of the equipment.

[0037] The elastic transmission structure further comprises an electric telescopic rod 15, the electric telescopic rod 15 parallel to the transmission connecting shaft 9 is fixedly installed on the end face outer wall of the servo motor 10 corresponding to one side of the transmission connecting shaft 9, and the piston shaft end face of the electric telescopic rod 15 is close to the end face of the missing tooth gear 8 close to the servo motor 10, the electric telescopic rod 15 as a key component for controlling the transmission connection between the missing tooth gear 8 and the driven gear 7 plays an important role in the fertilizer packaging process. When the packaging bag is full and needs to be replaced with a new packaging bag, the electric telescopic rod 15 is started, the piston shaft of the electric telescopic rod 15 is extended, the missing tooth gear 8 is transversely moved away from the servo motor 10, so that the missing tooth gear 8 is disengaged from the driven gear 7, the rotating and unloading action of the cylindrical valve body 5 is stopped, the leakage and waste of fertilizer when there is no packaging bag under the unloading hopper 4 are effectively avoided, and the cleanliness of the packaging site and the safety of the operation are ensured. When the new packaging bag is in place, the piston shaft of the electric telescopic rod 15 is retracted, the missing tooth gear 8 is reset under the action of the return spring 14, reengages with the driven gear 7, restores the unloading function of the equipment, and realizes the precise control and automatic operation of the unloading action of the equipment.

[0038] Working principle: the fertilizer packaging auxiliary equipment in practical application, is placed in the upper of fertilizer packaging bag conveying platform, can through the bottom of hopper 4 to the packaging bag in the fertilizer, in the fertilizer packaging, the fertilizer stored in the fertilizer storage hopper 1 can enter the cylindrical transfer bin 3 through the material gathering channel 2, and falls into the cylindrical valve body 5 on one side of fertilizer containing cavity 6 and the cylindrical transfer bin 3 formed fan-shaped radian, at this time through the driving servo motor 10 drive transmission connecting shaft 9 rotation, at this time transmission connecting shaft 9 through the transmission transverse groove 13 and transmission clamping block 12 clamping, can synchronous belt drive gear 8 is rotated, and the gear 8 is rotated by a circle period can make driven gear 7 intermittent flip ninety degrees, namely synchronous belt drive cylindrical valve body 5 intermittent flip ninety degrees, full of fertilizer containing cavity 6 is turned ninety degrees in the lower of cylindrical valve body 5 after can through the hopper 4 packaging, and empty fertilizer containing cavity 6 will be synchronous to the bottom of material gathering channel 2, and the fertilizer is placed again, and the intermittent time of cylindrical valve body 5 turning can make empty fertilizer containing cavity 6 filled with fertilizer, the same specification of fertilizer is dropped into the fertilizer packaging bag through the hopper 4 every time, so as to control the weight of fertilizer in each package bag, the weight of the same batch of fertilizer packaging, improve the quality of fertilizer packaging finished product factory.

[0039] And after each package bag is filled, conveying and empty packaging bag is placed below the hopper 4, this period of time needs to ensure that the hopper 4 cannot be dosed, at this time, the driving electric telescopic rod 15 can push the gear 8 to move away from the servo motor 10, the transmission clamping block 12 on the gear 8 moves along the transmission transverse groove 13 on the transmission connecting shaft 9, at this time, the connection between the gear 8 and the driven gear 7 can be released, and the gear 8 and the transmission connecting shaft 9 rotate synchronously without stopping, and the transmission clamping block 12 will compress the reset spring 14 when moving horizontally, when the new packaging bag is placed below the hopper 4 and needs to be packaged again, the driving electric telescopic rod 15 returns to its original state, at this time, the force of the reset spring 14 can make the gear 8 move along the transmission connecting shaft 9 to reset and continue to drive the driven gear 7, so as to carry out new packaging and dosing work.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A fertilizer packaging assistive device characterized by: The fertilizer storage hopper (1), the material gathering channel (2), the cylindrical transfer bin (3) and the lower hopper (4) are sequentially communicated from top to bottom, and further comprising: The cylindrical valve body (5) is horizontally and rotatably connected in the cylindrical transfer bin (3), and the outer surface of the cylindrical valve body (5) is attached to the inner wall of the cylindrical transfer bin (3), and the cylindrical valve body (5) is provided with four equal parts of annularly distributed fertilizer holding cavities (6) corresponding to the outer surface of the cylinder, the fertilizer holding cavity (6) on one side above the cylindrical valve body (5) is communicated with the fan-shaped space formed by the cylindrical transfer bin (3) and the material gathering channel (2), and the fan-shaped space formed by the cylindrical valve body (5) on the same side below and the cylindrical transfer bin (3) is communicated with the lower hopper (4); The intermittent overturning structure is arranged outside the cylindrical transfer bin (3) and connected with the cylindrical valve body (5), wherein the main body of the intermittent overturning structure is composed of a toothless gear (8), a transmission connecting shaft (9) and a servo motor (10), and the intermittent overturning structure is used to drive the cylindrical valve body (5) to overturn by ninety degrees in an interval mode. The elastic transmission structure is arranged between the toothless gear (8) and the transmission connecting shaft (9), and is used to release or restore the transmission of the intermittent overturning structure to the cylindrical valve body (5).

2. The fertilizer packaging assist device of claim 1, wherein: The fan-shaped arc of each group of fertilizer holding cavities (6) on the cylindrical valve body (5) is ninety degrees, the inside of the material gathering channel (2) is gathered in a wide-to-narrow shape, and the arc of the communication between the bottom end of the material gathering channel (2) and the cylindrical transfer bin (3) is smaller than the arc of the fertilizer holding cavity (6), and the lower hopper (4) is gathered in a wide-to-narrow shape as a whole.

3. The fertilizer packaging assist device of claim 1, wherein: The intermittent overturning structure includes a driven gear (7), a toothless gear (8), a transmission connecting shaft (9) and a servo motor (10), one end of the cylindrical valve body (5) is rotatably installed on the end side of the cylindrical transfer bin (3) corresponding to the cylindrical valve body (5), and a connecting shaft is fixedly connected between the driven gear (7) and the cylindrical valve body (5), the servo motor (10) is fixedly installed on the outer side of the cylindrical transfer bin (3) corresponding to the cylindrical valve body (5), and the output shaft of the servo motor (10) is fixedly connected with the transmission connecting shaft (9), the toothless gear (8) is sleeved on the transmission connecting shaft (9) through the elastic transmission structure, the toothless gear (8) is provided with gear teeth in a circular arc distribution on the outer circular surface and can be engaged with the driven gear (7), and the circular arc of the gear teeth on the toothless gear (8) is ninety degrees.

4. The fertilizer packaging assist device of claim 3, wherein: The shaft centers of the toothless gear (8) and the driven gear (7) are on the same horizontal line.

5. A fertilizer packaging aid according to claim 4, characterized in that: The elastic transmission structure comprises a transmission clamping block (12), a transmission horizontal groove (13) and a reset spring (14), a circular hole (11) for sleeving on a transmission connecting shaft (9) is arranged at the center of the toothless gear (8), upper and lower symmetrical transmission horizontal grooves (13) are arranged on the top and bottom outer surfaces of the transmission connecting shaft (9), the transmission clamping block (12) is integrally and slidingly clamped in the transmission horizontal groove (13) and is fixed on the top inner part and the bottom inner wall of the circular hole (11) of the toothless gear (8), the transmission clamping block (12) in the toothless gear (8) is attached to the end face inner wall of the side close to the servo motor (10) of the transmission horizontal groove (13), and the reset spring (14) is fixedly connected between the end face inner wall of the transmission horizontal groove (13) away from the servo motor (10) and the transmission clamping block (12).

6. A fertilizer packaging aid according to claim 5, characterized in that: The elastic transmission structure further comprises an electric telescopic rod (15), the electric telescopic rod (15) parallel to the transmission connecting shaft (9) is fixedly installed on the outer wall of the end face of the servo motor (10) corresponding to one side of the transmission connecting shaft (9), and the piston shaft end face of the electric telescopic rod (15) is attached to the end face of the toothless gear (8) close to the servo motor (10).