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Hydraulic control system for cloth chute inclination positioning accuracy

A technology of hydraulic control system and distributing chute, which is applied to fluid pressure actuating device, blast furnace parts, bell and funnel arrangement, etc., can solve the problems of increased wear, increase, and inability to meet blast furnace process requirements, and achieves improved control Accuracy, uniform cloth surface, and the effect of improving service life

Inactive Publication Date: 2015-09-30
QINHUANGDAO QINYE HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the initial use, the gap between the guide wheel 104 and the guide rail 105 is small, and the fluctuation angle of the distribution chute 103 is about 0.1 degree in one rotation; as the service life of the distributor increases, the inclination of the supporting ring 102 causes the wear of the guide wheel 104 and the guide rail 105 to increase ( guide wheel, guide rail clearance increases), the fluctuation angle of the distribution chute 103 rotates a circle also increases, even more than 0.2 degrees, which cannot meet the blast furnace site process requirements

Method used

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  • Hydraulic control system for cloth chute inclination positioning accuracy
  • Hydraulic control system for cloth chute inclination positioning accuracy
  • Hydraulic control system for cloth chute inclination positioning accuracy

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 2 As shown, the hydraulic control system for the inclination positioning accuracy of the distribution chute of the present invention includes a hydraulic synchronous motor 1 , a proportional valve 2 , a first hydraulic control check valve 3 and a second hydraulic control check valve 4 . The proportional valve 2 in this embodiment adopts a three-position four-way electro-hydraulic proportional valve, and of course other types of proportional valves can be used as long as the same function can be realized, such as a servo proportional valve. Proportional valve 2 has the functions of stepless speed regulation and precise control of oil supply, and can precisely position the distribution chute. The oil port P of the proportional valve 2 is connected with the high-pressure hydraulic oil source. figure 2 The oil port P of the proportional valve 2 is connected to the hydraulic station P, that is, the high-pressure oil pump is used to convert the low-pressure ...

Embodiment 2

[0052] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the three shunt oil pipes 13 are respectively connected with the three rod chambers 9 of the oil cylinder, and the three-way branches of the second pipeline 8 are respectively connected with the rodless chambers of the three oil cylinders. 7 connections. The structures and working principles of other parts are completely the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a hydraulic control system for cloth chute inclination positioning accuracy. The hydraulic control system is connected with three oil cylinders for driving a cloth chute to incline. The hydraulic control system comprises a hydraulic synchronous motor with three coaxial flow diverters with equal displacement. The three flow diverters are connected with cavities with rods of the three oil cylinders through split oil tubes, or the three flow diverters are connected with cavities without rods of the three oil cylinders through the split oil tubes so that the three oil cylinders can supply oil in an equivalent mode. According to the hydraulic control system for cloth chute inclination positioning accuracy, the hydraulic synchronous motor is adopted so as to output hydraulic oil of the same flow, so that synchronization of the three oil cylinders is guaranteed; meanwhile the three oil cylinders are separated from one another, so that supporting rings driven by the three oil cylinders cannot incline, friction between a guide wheel and a guide rail is avoided, and the service life of a distributing device is prolonged.

Description

technical field [0001] The invention relates to a hydraulic control system, in particular to a hydraulic control system for positioning accuracy of the inclination angle of a material distribution chute on a bellless furnace top. The invention belongs to the technical field of blast furnace ironmaking. Background technique [0002] At present, the tilting of the distributing chute of the bellless top distributor is hydraulically driven by three oil cylinders. Such as figure 1 As shown, three oil cylinders 101 are evenly distributed at 120 degrees and connected to a support ring 102 (mechanical synchronization), the support ring 102 moves up and down to drive the distribution chute 103 to tilt. The tilting of the distribution chute 103 is synchronized with the original machine: for the case where the inclination angle of the distribution chute 103 is small, when the forces on the three oil cylinders 101 are the same or have little difference, the oil cylinders 101 are synch...

Claims

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Application Information

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IPC IPC(8): F15B11/22C21B7/00
CPCF15B11/22C21B7/20
Inventor 陈晓光王强华成周永利李东生李凯
Owner QINHUANGDAO QINYE HEAVY IND
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