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The hydraulic reversing valve 02MG20.11.19.01 of the coal mill is a two position five way valve in the hydraulic system, mainly used to control the movement direction of the loading cylinder during the lifting process of the coal mill. This valve is controlled by an electromagnetic directional valve to achieve the conversion of the valve core at different positions, thereby changing the hydraulic oil flow direction of the loading cylinder.
Structure:
The hydraulic reversing valve 02MG20.11.19.01 is composed of a valve core, valve sleeve, front and rear end covers, sealing rings, and springs. The valve core is a cast part with a large volume. These components work together to ensure precise control of the hydraulic system during the lifting process of the coal mill.
Working principle:
In the initial state and normal operation, the electromagnetic directional valve is in the right position. The control oil chamber of the hydraulic reversing valve 02MG20.11.19.01 is connected to the oil tank to maintain the highest position of the valve core. At this point, the return chamber of the loading cylinder is directly connected to the oil tank. When it is necessary to lift the grinding roller, the electromagnetic directional valve receives an electrical signal and switches to the left position. Control oil enters the control oil chamber of the hydraulic directional valve, causing the valve core to move down to the lowest position. In this way, the return chamber of the loading cylinder is isolated, and the liquid is returned to the tank through the flow control valve and electromagnetic directional valve. By adjusting the flow control valve, ensure that the lifting and lowering movements of the three loading cylinders are synchronized.
| Technical Specification of Hydraulic reversing valve for Reference | |
| Valve Type | Hydraulic directional valve |
| Color Code | Gray |
| Material | Cast Steel |
| Operating Pressure | 1~10MPa |
| Emergency Outlet (Casing) Pressure | 10Bar |
| Approximate Weight | 60Kg |
| Working Temperature | -29~66°C |
| Valve Spare Parts | Sealing Kits |
| Hydraulic oil station hydraulic reversing valve | 02MG20.11.19.01 |
| Compression type hose assembly | 16III-1500 |
| Grinding ring compression bolt | 200MG41.11.08.94 |
| Coal mill scraper device | 20MG40.11.07.01J |
| Top link bar | 20MG40.11.13.99 |
| Shaft sleeve | 20MG50.11.09.84J |
| Scraper type coal feeder roller chain | 32A-2 |
| Special rubber hose | 45III-1000 |
| Grinding roller retaining ring | K3740.4-9 |
| Welding plug | K3740.5-15 |
| Hydraulic oil station hydraulic directional valve | MG20.11.1.19.01 |
| Guide gasket set | MG20.11.12.97 |
| Roller trolley | MG20.68 |
| Gasket pack | MG30.11.12.07.97 |
| Elastomer components | MG40.11.02.97 |
| Coal mill motor drive end bearing sleeve | YMKQ600-6 |
| solenoid valve | YPM225-FZ DN20 |
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