Method and device for derusting and cleaning the inner wall of small-diameter pipelines

Abstract

The invention discloses a small-bore pipe inner wall rust removing device. The small-bore pipe inner wall rust removing device comprises a lantern ring and a double-noose which is formed due to mutual winding of two strands of steel wires; an elastic scraping layer which is matched with the inner wall of a to-be-machined pipe is arranged on the external annular surface of the lantern ring; a flexible connecting block is arranged on the end surface of the lantern ring; the flexible connecting block is connected with a haulage cable; a guide hole which is matched with the cross section of the double-noose is formed in the axial line of the lantern ring; the lantern ring is axially sleeved on the double-noose through the guide hole. The small-bore pipe inner wall rust removing device has the advantages of being simple in structure, low in cost, convenient to produce and operate, generating no environmental pollution, being good in rust removing effect, high in efficiency, applicable to rust removing cleaning of hydraulic oil pipe inner walls in a large batch to improve the machining efficiency of hydraulic oil pipes.

Description

technical field [0001] The invention relates to the technical field of rust removal and cleaning of pipelines, in particular to a method and device for rust removal and cleaning of the inner wall of small-diameter pipelines. Background technique [0002] Rust removal and cleaning of the surface of metal pipes is an important research topic in the field of industrial applications, especially the rust removal and cleaning of the inner wall of small-diameter pipes is more difficult. Hydraulic oil pipes are small-diameter pipes. For example, the diameter of hydraulic oil pipes used for forklifts usually does not exceed 20 mm, and there is a high requirement for the cleanliness of the inner cavity. The inner cavity should be smooth and clean, and there should be no scale, rust, oil and other impurities, otherwise various pollutants will affect the reliability of the oil supply system and even cause damage to the hydraulic system. For a long time, the cleanliness of the inner cav...

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Problems solved by technology

[0003] At present, the industrial derusting and cleaning processes for the inner wall of small-diameter pipes mainly include: 1. Pickling, which uses acid to react with oxide layer and rust to achieve the purpose of derusting and cleaning the inner wall of the pipe. The pickling process is difficult to control, and the acid will Causes environmental pollution and is not conducive to the health of the staff

2. Sandblasting, using high-hardness abrasive grains carried by high-pressure gas to impact the oxide layer and rust on the inner surface of the pipeline, which will cause dust pollution, and the treatment effect on slender pipelines is not ideal

[0004] Notification number CN100531940C discloses a "pipeline inner surface vibration derusting process and its device", which is beneficial to the principle of vibration processing technology to realize the device for removing the oxide layer and rust on the inner surface of small-caliber long pipelines, although it overcomes the above-mentioned "acid rust removal process". However, this process requires the help of a professional vibration derusting device, the cost is high, and the derusting and cleaning time is long, so it cannot be applied to large quantities of hydraulic oil pipes in hydraulic system accessories factories. Inner wall derusting and cleaning

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