| 摘要 |
Disclosed is a gate valve, which comprises a valve blade 120 which is configured to close the opening 112 in a valve housing 11; a valve rod 130 which is connected to the valve blade 120 and is configured to move in upward and downward directions and in a horizontal direction; a guide housing 140 which is connected to an outer side of the valve housing 110, wherein at both inner sides of the guide housing 140, there is provided an L-motion block guide groove 142; an L-motion block 150 which is connected to the valve rod 130, wherein at both sides of the L-motion block 150, a guide roller 151 inserted and driven in the L-motion block guide groove 142 is installed; a driving block 160 which is connected to an upper side and an lower side of the L-motion block 150 by way of at least one link 155, respectively; at least one tensile elasticity unit 170 which is installed between the L-motion block 150 and the driving block 160; and an upward and downward driving unit 180 which is configured to drive the driving block 160 upwards and downwards. |
