Charging and stoking machine special for silicon-iron and silicon metal electric furnaces

Abstract

The invention discloses a charging and stoking machine special for silicon-iron and silicon metal electric furnaces. The charging and stoking machine comprises a main frame, front driving wheels are mounted on the main frame through a front-wheel driving device, rear steering wheels are mounted on the main frame through a steering mechanism, a hydraulic control system, an oil tank and a charging and stoking mechanism are arranged on the main frame, the hydraulic control system comprises a power source formed by connection of a motor and a triplex variable displacement piston pump, and the first link of the triplex variable displacement piston pump is connected with a travel motor of the front-wheel driving device through a first reversing valve; the second link of the triplex variable displacement piston pump is connected with the charging and stoking mechanism through a second reversing valve bank; the third link of the triplex variable displacement piston pump is connected with the steering mechanism and a control mechanism, and the control mechanism is connected with the first reversing valve and the second reversing valve bank; an oil cooler is arranged on the main frame, and a condenser tube of the oil cooler is inserted into the oil tank. The charging and stoking machine has the advantages that heat emission of hydraulic oil can be lowered effectively, and the charging and stoking machine is controllable in oil temperature, small in maintenance workload and long in service life and can be operated under severe conditions stably for a long time.

Description

technical field [0001] The invention relates to a special mechanical equipment for an electric furnace, in particular to a feeding and stamping machine for ferrosilicon and industrial silicon electric furnaces. Background technique [0002] Feeding and stamping machine is a special mechanical equipment for feeding and stamping at the mouth of open and semi-closed submerged arc reduction electric furnaces for the production of silicon-based ferroalloys. [0003] At present, the feeding and pounding machine commonly used in China is mainly based on the charging and pounding machine introduced by the German DDS company in the 1980s, and some domestic machinery manufacturers have improved it. [0004] Before 2008, ferrosilicon and industrial silicon electric furnaces with a capacity of less than 25.5MVA were mainly used in China. According to this principle, the feeding and stamping machine improved and produced can basically meet the work requirements when facing small and medi...

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Problems solved by technology

[0004] Before 2008, ferrosilicon and industrial silicon electric furnaces with a capacity of less than 25.5MVA were mainly used in China. According to this principle, the feeding and stamping machine improved and produced can basically meet the work requirements when facing small and medium-sized electric furnaces with a capacity of less than 25.5MVA. , with the continuous increase of domestic ferrosilicon and industrial silicon electric furnace specifications, especially in recent years, the ferrosilicon electric furnace has reached a capacity of 63MVA, the load of the furnace is increasing, and the operating frequency is also increasing. During this period, Although some domestic manufacturers of feeding furnaces have made a lot of improvement work, because the main design principles have not changed, it is difficult to control the rise of oil temperature under heavy load working conditions, and the effect of on-site use is not good. It is very ideal, but there are still many problems such as uncontrollable oil temperature, insufficient furnace force, heavy maintenance workload, high maintenance cost, poor working stability, poor working conditions, short life of hydraulic oil and hydraulic parts, etc.

[0005] Therefore, continuing to use the original design principle to improve and manufacture the feeding and pounding furnace has been completely unable to meet the working conditions of such a large load, high strength, and high temperature environment, which has seriously affected the normal work of ferrosilicon and industrial silicon manufacturers.

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