| 摘要 |
PURPOSE: An opening/closing valve for the fine coal powder transferring pipe of a pulverizer is provided to facilitate the control of the transferring speed of a fine coal powder, and maintenance work. CONSTITUTION: An opening/closing valve for the fine coal powder transferring pipe of a pulverizer comprises a valve main body(210), a hollow pipe(212), an actuator cylinder(220), a knuckle arm(224), and a valve stem(226). A protrusion, which is projected to the outside of the valve main body, is formed in the central part of the valve main body to form an empty space along vertical direction. A disk seals the hollow pipe to open/close the bottom end of the valve main body, which is connected to an outlet. The actuator cylinder is combined with the sidewall, which is adhered to the cover of the valve main body. The knuckle arm is combined with the actuator rod(222), which is slid by operation flow supplied to the actuator cylinder. One side of the valve stem is combined with the knuckle arm, the other side passes through the protrusion of a cover.
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