Electric Locomotive Transformer Vacuum Butterfly Valve

The vacuum butterfly valve for electric locomotive transformer is a butterfly valve with small opening and closing torque, good sealing effect, convenient operation and high reliability.

Product Details

Electric Locomotive Transformer Vacuum Butterfly Valve


  The vacuum butterfly valve for electric locomotive transformer is a butterfly valve with small opening and closing torque, good sealing effect, convenient operation and high reliability.

  Since one end of the through hole of the valve body is a tapered hole, the rotating shaft has a certain distance from the axis of the through hole of the valve body, so that the area of the valve plate mounted on both sides of the rotating shaft is different, and the valve piece with a small area is first slipped into the through hole and the cone when the butterfly valve is closed. The hole is matched to make the opening and closing torque small; at the same time, the outer ring is turned into a semi-circular sealing ring, and the positioning plate is clamped on the valve plate base by screws, and the sealing ring will not be displaced even if it is immersed in the high temperature oil for a long time. The butterfly valve seal is very reliable.


butterfly valvebutterfly valve2_副本

                Figure 1                                  Figure 2


  Figure 1 is a schematic view of the structure of the present invention;

  Figure 2 is a cross-sectional view of Figure 1A-A, 1 valve body, 2  rotating shaft, 3  sealing ring, 4  screw, 5  positioning plate, 6  valve plate base, 7 valve body through hole, 8 tapered hole , 9  cylindrical hole.

  As shown in the figure, the utility model comprises a valve body 1, a rotating shaft 2 and a valve plate, and the special rubber sealing ring 3 in which the valve piece is turned into a semicircle by the outer ring is clamped on the valve plate base 6 by the positioning plate 5 with the screw 4, The through hole 7 of the valve body 1 is divided into a conical hole 8 and a cylindrical hole 9 at the axis of the shaft, wherein the through hole that is in mating contact with the valve plate is a conical hole 8, and the taper effect at 17 is optimal. The rotating shaft 2 adopts an eccentric structure, and the axis of the valve body through hole 7 is 2 mm, so that the area of the valve plate mounted on both sides of the rotating shaft is not equal. When the butterfly valve is closed, the valve piece with a small area is first slid into the through hole, and the cone The hole fits so that the opening and closing torque is small.





Best regards

Mandy

Email:mandy@erg.cn


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