Automatic alignment and sealing device for the mouth of an alumina tank car

By using a double-layer telescopic sleeve and crank lever structure, the problem of sealing failure and material accumulation at the opening of alumina tank truck under the influence of air pressure is solved, achieving automatic alignment and adaptive sealing, ensuring stable material feeding, and preventing dust leakage and material retention.

CN122403166APending Publication Date: 2026-07-17SHANXI LUNENG JINBEI ALUMINUM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI LUNENG JINBEI ALUMINUM CO LTD
Filing Date
2026-05-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing sealing devices for alumina tank truck openings are prone to failure under pressure, leading to dust leakage and material accumulation. This is especially true when alumina powder becomes damp and clumps together or has uneven particle size, causing bridging and blockage problems.

Method used

It adopts a double-layer telescopic sleeve structure. The inner feeding cylinder and the outer protective cylinder form a pressure relief chamber. The sealing ring adopts a crank lever structure, which uses the positive pressure inside the tank to convert into vertical clamping force to achieve self-adaptive sealing. The pressure relief chamber separates the material and airflow to avoid airflow obstructing the feeding.

Benefits of technology

It enables automatic alignment and sealing of the alumina tank truck opening, preventing dust leakage, ensuring smooth material discharge, reducing bridging and blockage, and improving loading and unloading efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides an automatic alignment and sealing device for alumina tank truck openings, relating to the field of alumina powder tank truck loading and unloading equipment. It includes a mounting base and a material hopper. The lower end of the material hopper is connected to a double-layer telescopic sleeve. The double-layer telescopic sleeve includes an inner feeding cylinder and an outer protective cylinder arranged coaxially, forming a pressure relief chamber between them. The inner feeding cylinder is used to transport powder materials, and the pressure relief chamber is used to collect and guide pressurized airflow within the tank, isolating the material and airflow for independent transport. A sealing ring is provided on the lower part of the outer surface of the double-layer telescopic sleeve. This automatic alignment and sealing device for alumina tank truck openings achieves independent separation of material and airflow through the pressure relief chamber formed by the inner feeding cylinder and the outer protective cylinder. The high-pressure airflow inside the tank will not obstruct the falling powder. Simultaneously, the pressure relief chamber adopts a conical structure that is wider at the top and narrower at the bottom, which facilitates airflow convergence and guidance, avoiding bridging and blockage caused by pressure buildup inside the tank, ensuring smooth and stable material discharge.
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