Modified draught fan push -pull valve

• Main Authors: HUANG JINZHAN, CHEN JIAOLONG, DONG JINNAN
• Format: Patent
• Language: Chinese; English
• Published: 04.05.2018
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model relates to a modified draught fan push -pull valve, including picture peg frame, flashboard and screw rod driving mechanism, screw rod driving mechanism includes lead screw, screw -nut and rocking handle. The flashboard sets up in the picture peg frame, and back end of the lead screw passes through the lead screw bearing frame and connects the flashboard, and the lead screw frontend passes the picture peg frame to be connected with the rocking handle, and screw -nut is connected with the lead screw front end and fixes the outside at the picture peg frame. The utility model discloses a with screw -nut change establish draught fan picture peg frame outside, avoid screw -nut plugged up by the forge scale in the draught fan push -pull valve or screw -nut and lead screw to rust the rotation that causes motionless. Change and reduced the dead inferior scalar sum switching time of card when the draught fan push -pull valve is opened after establishing, lightened maintenanceperson person's work load