Hydraulic system of blast furnace gun

Abstract

The invention discloses a blast furnace gun hydraulic system, which comprises a safety control circuit (001), a hydraulic cylinder component (003), and a hydraulic cylinder control circuit (004). The safety control circuit (001) is connected with the hydraulic cylinder control circuit (004) via a hydraulic pipeline, and the hydraulic cylinder control circuit (004) is connected with the hydraulic cylinder component (003) via the hydraulic pipeline. The blast furnace gun hydraulic system also comprises a pressure maintaining circuit (002), which communicates with a rotary oil cylinder (13.1) via the hydraulic pipeline, a first ball valve (1.1) and a fifth ball valve (1.5), an oil supply pipe of the pressure maintaining circuit (002) communicates with a constant displacement pump oil source, and an oil return pipe of the pressure maintaining circuit (002) communicates with a system oil return pipe. The inventive blast furnace gun hydraulic system has the advantages of simple control, good safety and reliability, prolongs service life of components, and saves production cost.

Description

technical field [0001] The invention relates to a hydraulic control system, in particular to a blast furnace mud gun hydraulic system used for controlling blast furnace mud guns in iron and steel metallurgy. Background technique [0002] The blast furnace mud cannon hydraulic system is the key system of the blast furnace. Its function is to quickly drive the mud cylinder to drive the mud cannon after the blast furnace taps iron, and block the tap hole with refractory mud. The hydraulic mud gun is developed from the electric mud gun, which retains the action sequence and overall structure of the mud gun. Electric mud guns use electric motors and mechanical transmission, so they have the disadvantages of large dimensions, insufficient thrust of the mud pumping piston, fast wear of the transmission mechanism, and difficult replacement. Because the hydraulic mud gun has the characteristics of large mud thrust, compact mud, can adapt to the high pressure operation of the blast f...

AI Technical Summary

Problems solved by technology

However, if the control oil port of the third hydraulic control check valve in the safety control circuit is stuck, the third hydraulic control check valve cannot be opened, which will make the hydraulic cylinder control circuit unable to build up pressure and affect the normal operation of the mud gun, thereby affecting The normal production of the blast furnace; similarly, this hydraulic control system still does not solve the defects caused by the oil leakage of the rotating oil cylinder or the jamming of the first hydraulic control check valve, so that the blast furnace taphole cannot be safely blocked, which not only affects the normal production of the blast furnace, And it will pose a serious threat to the personal and property safety of the staff

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