Gate Valve

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 110; a valve rod 130 which is connected to the valve blade 120 and is configured to move in upward and downward directions and a horizontal direction; a guide housing 140 which is connected to an outer side of the valve housing 110; an L-motion block 150 which is engaged and connected to the valve rod 130, with a guide roller 151 being installed at both sides of the L-motion block 150; a cam block 160 which is installed in the interior of the guide housing 140; a driving rod engaging roller 172 which is installed at an lower end of the valve rod 130; a driving rod 170 in which the driving rod engaging roller 172 is inserted and guided and which has a driving rod slanted groove 171 obliquely formed in a closing direction “C” in a downward direction; an elasticity providing unit 175 which is configured to provide elasticity between the L-motion block 150 and the driving rod 170; and an upward and downward driving unit 180 which drives upward and downward the driving rod 170.

主权项

1. A gate valve, comprising:
a valve blade 120 which comes into close contact with a valve set 111 formed around an opening 112 in a valve housing 110 and is configured to close the opening 112 from the inside; a valve rod 130 which is connected to the valve blade 120 and sealingly protrudes by way of a bellows 131 from the inside of the valve housing 110 to the outside and which moves in an upward and downward direction and moves in a horizontal direction; a guide housing 140 which is connected to an outer side of the valve housing 110; an L-motion block 150 which is installed in the interior of the guide housing 140 and is engaged and connected to the valve rod 130, with a guide roller 151 being installed at both sides of the L-motion block 150; a cam block 160 which is installed in the interior of the guide housing 140 and includes a valve rod pass hole 161 through which the valve rod 130 passes and a slanted groove 162 which is formed at both sides and is obliquely formed in a closing direction “C” in a downward direction, with the guide roller 151 being inserted in and guided by the cam block 160; a driving rod engaging roller 172 which is installed at an lower end of the valve rod 130; a driving rod 170 in which the driving rod engaging roller 172 is inserted and guided and which has a driving rod slanted groove 171 obliquely formed in a closing direction “C” in a downward direction and is engaged to the cam block 160; an elasticity providing means 175 which is configured to provide elasticity between the L-motion block 150 and the driving rod 170; and an upward and downward driving means 180 which drives upward and downward the driving rod 170.