Isolation liquid column driving type special medium conveying system and working method thereof

By using a liquid-piston-driven special media conveying system, a liquid piston column is used to separate the media, achieving a dynamic seal at the liquid-liquid interface without solid contact. This solves the problems of easy leakage, high explosion-proof cost, and large shear force of existing pumps in the conveying of special media, and realizes efficient and safe conveying of special media.

CN122359375APending Publication Date: 2026-07-10TAIZHOU YUANCHI FLUID EQUIPMENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610560614.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-27
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing pumps have drawbacks in conveying special media, such as easy leakage of seals, high explosion-proof costs, large shear forces, easy clogging and wear, and poor resistance to corrosion and cavitation. They are difficult to meet the high-efficiency and safe conveying requirements of high-end manufacturing and special working conditions.

Method used

A special media conveying system driven by an isolating liquid column is adopted. The isolating liquid forms a liquid piston column, which uses density difference to achieve media separation. It adopts a liquid-liquid interface dynamic seal without solid contact, avoiding mechanical seals and high-speed moving parts, and relies on the isolating liquid to drive the media with stable displacement.

Benefits of technology

It achieves near-zero leakage and no shear damage in the transportation of special media, significantly extending equipment life, reducing maintenance frequency and costs, adapting to extreme working conditions such as high solids content and strong corrosion, and improving transportation safety and media integrity.

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Abstract

The invention belongs to the technical field of fluid conveying, and discloses a spacer fluid column driving type special medium conveying system and a working method thereof.The spacer fluid column driving type special medium conveying system comprises a power unit, the power unit communicates with a process pipeline unit, the power unit comprises a symmetric acting pump, and the symmetric acting pump is provided with a first driving cavity and a second driving cavity; the first driving cavity communicates with a first conveying pipe, and the second driving cavity communicates with a second conveying pipe. The process pipeline unit comprises a first U-shaped pipe and a second U-shaped pipe which are symmetrically arranged, the first conveying pipe is communicated with one end of the first U-shaped pipe, the second conveying pipe is communicated with one end of the second U-shaped pipe, the other end of the first U-shaped pipe is communicated with the first conveying unit, and the other end of the second U-shaped pipe is communicated with the second conveying unit; the whole structure is simple, zero-leakage conveying of special media can be achieved, an explosion-proof motor is not needed, shear damage is avoided, abrasion and corrosion of flow passage components are avoided, and the using effect is improved.
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