Large-diameter butterfly valve with flow adjusting device

• Main Authors: ZHANG ZHILIANG, LIN ALONG, LIN FULONG, LIN YUXUAN
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2023
• 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 invention discloses a large-diameter butterfly valve with a flow adjusting device, and belongs to the technical field of butterfly valves, the large-diameter butterfly valve comprises a valve body, the valve body is connected with a valve shaft, one end of the valve shaft is connected with a valve plate, the other end of the valve shaft is provided with a hand wheel, a liquid inlet and a liquid outlet of the valve body are both provided with sealing boxes, and the sealing boxes are connected with the valve shaft. A circular ring is fixed to the tops of the two sealing boxes, a circular groove is formed in the upper surface of the circular ring, scales are arranged on the bottom wall of the circular groove in the circumferential direction, indicating rods are symmetrically fixed to the side wall of the valve shaft, pointers are fixed to the bottoms of the indicating rods, and one ends of the pointers are located in the circular groove. According to the valve, the rotating angle of the valve can be convenie