Grinding roller pressurization device for vertical mill

Abstract

The invention discloses a grinding roller pressurization device for a vertical mill. The grinding roller pressurization device for the vertical mill comprises a compression roller component, a supporting device, a pressurization oil cylinder and an overhaul oil cylinder. The invention aims to provide the grinding roller pressurization device for the vertical mill which can overcome the disadvantages. During grinding, the hydraulic thrust vertically acts on a grinding roller pressurization rod, and oil flows into an operating travel rodless cavity to reduce oil supply pressure, hydraulic leakage and wear, and idle work loss of diagonal tension and member loads; and according to different motion requirements of grinding working condition and overhaul working condition on a grinding roller, the pressurization rod and a pressurization rod supporting plate are in hinged connection and in rigid connection, the pressurization rod supporting plate and a pressurization rod supporting base are in hinged connection and rigid connection, and the two modes correspond to each other in a staggered way, so that the load requirements of the supporting device during grinding are met, the turning space when the grinding roller is overhauled is also reduced, and the manufacturing cost of the vertical mill is reduced. The invention belongs to the field of technical equipment of powder engineering, and is applied to grinding materials of vertical mills.

Description

Technical field [0001] The invention belongs to the technical field of powder engineering and is applied to a vertical mill to compact powdery materials. Background technique [0002] Most of the current pressurizing devices for vertical grinding rollers are made of "7"-shaped levers. One end is connected with the grinding roller through a bearing assembly, and the other end is hingedly connected with the extension end of the piston rod of the hydraulic cylinder. The frame of the vertical mill shell is hinged and connected, and when one end of the "7"-shaped lever is pulled by the hydraulic drive piston rod, the grinding roller at the other end acts on the hinged shaft at the apex of the "7"-shaped angle to roll the material on the vertical mill disc . The main shortcomings of this vertical roller pressing device are: [0003] 1) In order to make the grinding roller have vertical downward pressure, the hydraulic pulling force exerted on the "7"-shaped lever arm is usually oblique...

AI Technical Summary

Problems solved by technology

The main defect of this vertical roller pressing device is:

[0003] 1) In order to make the vertical downward pressure on the grinding roller, the hydraulic tension applied to the "7"-shaped lever arm is usually oblique to the arm, so part of the hydraulic force is lost in useless work and increases the component load; 2) Applying When there is a rod chamber working under tension, the oil supply pressure will increase by 30% year-on-year, and the probability of leakage and wear will increase; 3) The pressurizing device is hinged on the mill shell, which increases the overall manufacturing cost of the mill shell; 4) The grinding roller maintenance and surfacing welding must be turned out of the mill, the grinding roller rotates around the hinge shaft, the grinding door must be higher, and the turning space above the grinding table must be larger

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