Rotating arm crane pipe for loading hydrochloric acid

Abstract

The invention discloses a rotating arm crane pipe for loading hydrochloric acid and belongs to the technical field of crane pipes. The rotating arm crane pipe comprises a supporting frame component, a rotating arm component, a hydraulic cylinder, a vertical pipe, a sealing cap, an extensible pipe, a liquid level meter, a gas-phase hose and a liquid-phase hose, the supporting frame component comprises an upright, a support, a bracket, a supporting column, a rotary supporting seat, a first rotating joint and a first pneumatic motor, the rotating arm component comprises a first elbow, an inner arm, a second elbow, a second rotating joint, a second pneumatic motor, a vertical arm, a third elbow and an outer arm, polytef is lined in the vertical pipe, and the extensible pipe which downwards penetrates the sealing cap and is made by polypropylene is arranged in the vertical pipe in a sleeved manner. The rotating joints are driven to rotate through the pneumatic motors, so that accuracy in alignment is realized, rotating angle of the hoses is reduced, and service lives of the hoses are prolonged; the polytef is lined in the vertical pipe and used for making the liquid-phase hose and the gas-phase hose, so that the circumstance that a rubber pipe is prone to embrittlement and breaking leading to acid leakage when being corroded by the acid for a long time is avoided.

Description

technical field [0001] The invention belongs to the technical field of crane tubes, and more specifically relates to a crane tube for loading hydrochloric acid with a swivel arm. Background technique [0002] The acid-loading crane tubes on the acid-loading trestle for large-scale acid enterprises adopt fixed alignment devices, that is, design multiple acid-loading crane positions on the acid-loading trestle according to the standard length of the train tank car, and the acid-loading crane positions are equipped with acid-loading cranes. Pipes and control valves for alignment loading. Usually, when loading acid, a rubber tube is placed on the crane pipe head behind the control valve. After the tanker is parked, the rubber tube can be bent and inserted into the acid loading port of the tanker, and the control valve is opened to start acid loading. In long-term practice, it has been found that this way of loading acid has great potential safety hazards: (1) The acid loading ...

AI Technical Summary

Problems solved by technology

In long-term practice, it has been found that this way of loading acid has great potential safety hazards: (1) The acid loading port of the train has a safety fence with a height of about 500 mm, and the diameter of the rubber pipe used for acid loading is relatively large. When loading acid, the rubber tube must be bent over the guardrail before it can be inserted into the acid loading port of the train. This bending arc must reach more than 90°, which requires a lot of force. Generally, female workers or weak male workers cannot operate it, especially In winter, it is very difficult to bend the rubber hose; (2) the rubber hose is prone to become brittle under the corrosion of sulfuric acid for a long time, and the rubber hose will break and leak acid after repeated bending several times. On the one hand, the rubber hose needs to be replaced frequently, which increases the production cost; On the one hand, it is easy to leak acid, which brings the danger of being burned by concentrated sulfuric acid to the operator; (3) The fixed alignment device used for the acid crane pipe is often inaccurate, and the construction of the trestle bridge at the loading and unloading place is relatively difficult. troublesome and expensive

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