Boiler pipeline shrinkage device

• Main Authors: ZHAI BOWEN, ZHAI XINFANG
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CONVEYING; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HANDLING THIN OR FILAMENTARY MATERIAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; PACKING; PERFORMING OPERATIONS; PNEUMATIC TUBE CONVEYORS; REGULATING OR CONTROLLING COMBUSTION; SHOP CONVEYOR SYSTEMS; STORING; TAPS; THERMAL INSULATION IN GENERAL; TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING; TRANSPORTING; VALVES; WEAPONS

The utility model discloses a boiler pipeline hole shrinkage device which comprises a core plate chamber, core plates, flanges, a rotating shaft, a driving chain wheel, a chain, a driven chain wheel, a screw, a driving part and a screw nut, the two oppositely-arranged core plates are arranged in the core plate chamber, arc-shaped notches are formed in the sides, close to each other, of the core plates, and the flanges are arranged on the two axial faces of the core plate chamber. The rotating shaft is connected with the core plate chamber through a bearing seat, the rotating shaft is connected with a driving piece used for driving the rotating shaft to rotate, two driving chain wheels are fixedly connected to the driving chain wheel, the two screws are connected with the core plates one by one through screw nuts, and driven chain wheels are fixedly arranged at the ends, away from the screw nuts, of the screws. A chain surrounds the outer sides of the driven chain wheel and the driving chain wheel. The two scr