Shrinkable anti-blocking pipe cleaning projectile and its pneumatic drive device

Abstract

The invention discloses a shrinking blockage preventing type pipeline cleaning projectile and a pneumatic drive device thereof. The shrinking blockage preventing type pipeline cleaning projectile is composed of a cylindrical air bag, an overpressure vent valve and a sponge column cylinder. The cylindrical air bag is filled with high-pressure air. The overpressure vent valve is installed at one end of the cylindrical air bag sleeved with the sponge column cylinder. Due to the fact that the shrinking blockage preventing type pipeline cleaning projectile has the automatic shrinking blockage preventing function, the large diameter and excellent elasticity can be achieved, the friction between the projectile and the pipe wall can be increased, and the pipeline cleaning effect and the cleaning efficiency are improved. The pneumatic drive device is composed of an air compressor, a positive-pressure connector and a jet flow negative-pressure device and can provide pushing force and suction force for the shrinking blockage preventing type pipeline cleaning projectile, accordingly, the obtained power of the shrinking blockage preventing type pipeline cleaning projectile is greatly increased, excessively uneven deformation is avoided, the shrinking blockage preventing type pipeline cleaning projectile can be prevented from being blocked in a pipe cavity, and the cleaning efficiency and the cleaning effect are improved.

Description

technical field [0001] The invention relates to the field of pipeline and pipeline cleaning, in particular to a pipeline cleaning projectile which is convenient to operate, has good cleaning effect and can prevent clogging and an air pressure driving device thereof. Background technique [0002] After the pipeline used for transporting medium is used for a long time, impurities such as sludge, dirt and rust will accumulate on the inner wall and the diameter of the pipe will become smaller, which will affect the transmission efficiency, heat exchange efficiency and medium purity of the pipeline, and accelerate the oxidation of the pipeline. Carry out cleaning and maintenance. The current pipeline cleaning technologies generally include acid-base chemical cleaning, high-pressure water jet cleaning, ultrasonic cleaning, and air pressure projectile cleaning. Among them, the pneumatic projectile cleaning method is to use compressed air to push the cleaning projectile which is el...

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Problems solved by technology

[0003] However, although the pneumatic projectile cleaning method has multiple advantages over other pipeline cleaning methods, it also has the following disadvantages: (1) Theoretically, the larger the diameter of the cleaning projectile, the greater the elasticity, and the stronger the friction between it and the pipe wall , the cleaning effect is better, but the increase of friction reduces the ability of the cleaning projectile to pass through the pipeline. In order to prevent the cleaning projectile from being blocked in the pipeline, the friction between the cleaning projectile and the pipe wall is limited to a small range Inner, and the texture is relatively soft, which reduces the cleaning ability of the cleaning projectile. For the dirt that is firmly combined with the pipe wall, it cannot be cleaned. It needs multiple reciprocating operations to achieve its cleaning effect, so there is cleaning power and anti-blocking performance. Technical contradictions that cannot be both; (2) it uses compressed air to push the cleaning projectile to move in the pipeline, and the power of the cleaning projectile comes to one end. The power acquisition method is single, and it is often blocked in the pipeline due to insufficient thrust during the cleaning process. The driving method still needs to be improved, and the force on one side of the cleaning projectile travels, and its own deformation is uneven, which reduces the contact performance with the pipe wall and affects the cleaning effect; (3) in the pipe cleaning, use the combination of positive and negative air pressure to Driving the cleaning projectile can generate a greater pressure difference and make the cleaning projectile more powerful. However, during the cleaning process, various solid and liquid material residues, dirt, impurities and other foreign objects will be discharged from the end of the pipeline. The negative pressure equipment cannot meet the corresponding technical requirements

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