A kind of toner pipeline dredging device

Abstract

The invention discloses a pipeline dredging device. Through the device, one end of a carbon gun of a carbon powder pipeline is clamped, a ball valve is opened to input compressed air into the carbon powder pipeline, after a pressure gage displays that the pressure rises to the system pressure, the ball valve is closed, a pressing rod is pressed, pressure in the pipeline ejects an end cover open, carbon powder is brought out of the pipeline, the end cover is closed, the ball valve is opened, the compressed air is input again, and through repeated implementation of the above steps, the pipeline can be successfully dredged; through the device, the positive and negative pressure difference alternative dredging of any connecting point of the pipeline can be achieved, rapid loading and unloading and the carbon powder pipeline dredging work can be completed only through one person, the dredging efficiency and the success rate are improved, the shutdown overhauling time is shortened, the dredging effect and quality are ensured, involved parts are common spare parts in equipment management, the cost is low, material taking is convenient, mounting is convenient, detection is reliable, and maintaining is easy.

Description

technical field [0001] The invention relates to a pipeline dredging device, more specifically, to a toner pipeline dredging device. Background technique [0002] The ultra-high power DC electric arc furnace of the electric furnace factory adopts the "submerged arc" smelting technology of foam slag. Its technological feature is to cover the arc by generating foamy slag, which not only improves the thermal efficiency in the furnace, reduces power consumption and shortens the smelting cycle, but also reduces the possibility of damage to refractory materials and water-cooled furnace walls caused by arc light scattering. During smelting, only by stably injecting carbon powder can the carbon-oxygen reaction in the furnace be maintained, and finally the effective generation of foamy slag can be realized. [0003] Restricted by the plant structure and equipment layout, there is a long distance from the toner storage bin to each carbon injection point, so that a single toner pipelin...

AI Technical Summary

Problems solved by technology

[0005] According to experience, most of the blockages occur near the carbon gun 4. Since the discharge valve 1 and the blockage are usually separated by 50 meters to 60 meters, too long a distance causes the pressure of 0.6Mpa delivered by the compressed air 2 to the pipeline. The long build-up time not only reduces the dredging efficiency, but more importantly, the excessively long distance causes the negative pressure generated instantly when the discharge valve 1 is opened to drop slowly, which directly reduces the dredging effect

Therefore, it is often impossible to successfully unblock the pipeline. At this time, the pipeline close to the 4th end of the carbon gun can only be disassembled to find the blockage point and manually unblock it. This method is time-consuming and laborious. It is necessary to disassemble each section of the pipeline flange, which will cause downtime

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