A fertilizer bag sealing device

By designing a heat-sealing frame and smoothing mechanism, combined with a brush roller and a negative pressure fan, the problems of bag opening misalignment and dust during the sealing process of fertilizer small bags were solved, achieving efficient correction, cleaning and sealing, improving sealing accuracy and production efficiency, and reducing occupational health risks.

CN224511665UActive Publication Date: 2026-07-17FUJIAN YIGUO ECOLOGICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN YIGUO ECOLOGICAL TECHNOLOGY CO LTD
Filing Date
2025-09-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During the sealing process of existing fertilizer bag packaging, the bag opening is prone to tilting and wrinkling due to conveying vibration or uneven filling. In addition, dust adheres to the surface of the bag opening, affecting the sealing performance and aesthetics. Traditional equipment lacks an efficient integrated mechanism for correction and cleaning, requiring manual intervention, which is inefficient and prone to secondary pollution.

Method used

Design a fertilizer bag packaging sealing device, including a heat sealing frame, a smoothing mechanism and a dust removal mechanism. The heat sealing frame is driven to move up and down by a reciprocating screw, the brush roller corrects the bag opening and removes dust, the heat sealing strip achieves sealing, the negative pressure fan sucks away dust, and an integrated push cylinder and cylinder drive the brush roller and heat sealing strip to work synchronously.

Benefits of technology

It achieves efficient correction and cleaning of bag openings, ensuring sealing accuracy and airtightness, reducing the need for manual intervention, preventing dust diffusion, and improving production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224511665U_ABST
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Abstract

This utility model belongs to the technical field of packaging bag sealing machines, specifically a fertilizer bag sealing device. It includes a heat-sealing frame on a small plastic sealing machine. Height adjustment mechanisms are provided on both sides of the heat-sealing frame, each including a reciprocating screw with a drive motor. The reciprocating screw rotates, causing the heat-sealing frame to move up and down repeatedly, thus achieving continuous heat sealing of the fertilizer bag opening. A smoothing mechanism is provided on the inner surface of the heat-sealing frame, including brush rollers. After rotation, the brush rollers correct and align any skewed bag openings, while simultaneously brushing away dust flying from the outside of the bag opening. This fertilizer bag sealing device uses a cylinder to simultaneously push two support plates until the two brush rollers contact both sides of the bag opening. As the brush rollers rotate, the surface of the fertilizer bag opening is cleaned. At this point, the adjacent surfaces of two clamping blocks contact and clamp the bag opening. As the clamping blocks move upwards, any skewed bag openings can be corrected and aligned.
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