butterfly valve with switch indication function
Vacuum Butterfly Valve With Switch Indication
The butterfly valves in large and medium-sized transformers, rectifier transformers, reactors, power transformers and other oil circulation cooling devices, since it is not necessary to frequently change the opening and closing state of the butterfly valve, the butterfly valve is required to be opened and closed only during maintenance and repair. Therefore, the butterfly valve often adopts no handle, but seals one end of the rotating shaft out of the valve body through the shaft head cover. When the butterfly valve needs to be operated, the shaft head cover is opened by a wrench or a handle to rotate the rotating shaft to open or close the butterfly valve. In order to enable the operator to clear the opening and closing state of the butterfly valve, it is usually used to mark the direction of the oil flow on the shaft head cover. However, in the process of actually operating the butterfly valve, it is necessary to first go to the lower shaft cover and then rotate the shaft. When the butterfly valve is opened and closed, when the shaft cap is removed and the butterfly valve is opened and closed, the reference of the shaft cap is lacking, which makes it difficult to recognize whether the butterfly valve is open or closed, which brings difficulty to the operation.
The vacuum butterfly valve having a switch indicating function includes a valve body, a valve plate and a rotating shaft, wherein the valve plate has a disk shape, and the valve plate is rotatable about a rotating shaft to open or close the valve body, and the rotating shaft extends to one end of the valve body a bump on a side wall of the rotating shaft, the bump protruding in an axial direction or a radial direction of the valve piece. In this way, the bump can rotate synchronously with the valve plate when the valve plate rotates, so that the operator can grasp the position of the valve plate according to the direction of the bump, that is, the switch state of the butterfly valve, which saves the operator from confirming the butterfly valve switch state. The time and process, improve work efficiency, and can avoid the misoperation and affect the normal continuity of the pipeline, and can also avoid damage to the butterfly valve caused by misoperation.
1. The butterfly valve is provided with a bump on the rotating shaft indicating the direction of the valve plate, so that one can accurately judge the opening or closing state of the butterfly valve to avoid misoperation.
2. The butterfly valve controls the rotation range of the rotary shaft through the cooperation of the limit pin and the limit groove, so that the butterfly valve is opened or closed more accurately, and the valve plate is reversed to cause loss to the butterfly valve.
3. The shaft head cover of the butterfly valve can lock the rotating shaft to prevent the rotating shaft from being changed by the fluid to change the opening or closing state, and the stability is higher.
Figure 2 Figure 3
Figure 1 is a perspective view of a butterfly valve;
Figure 2 is a perspective view of the shaft cap removed;
Figure 3 is an enlarged view of a portion of Figure 2;
In the figure, 1, the valve body;2, the valve piece; 3, the shaft; 4, shaft head cover;5, limit pin; 11, the assembly hole; 12, the limit groove;31, the shaft head; 32, the bump.
Find the best quality vacuum butterfly valve with switch indication in stock here with our professional China manufacturers and suppliers. All the products are made under strict quality control and management system. And the customized is also offered at competitive price.