| 摘要 |
Disclosed in an embodiment of the present invention are a filter cover plate, filter and machining method of the filter cover plate. The filter cover plate is provided with a flange threaded through hole thereon for installing a tuning bolt; the cover plate provided with the flange threaded through hole is characterized in that: the flange threaded through hole has a certain depth, and the thickness of other portions on the cover plate is relatively less than the depth of the flange threaded through hole. Therefore, the filter cover plate being provided with the flange threaded through hole, and the tuning screw being fixed in the flange threaded hole, while reducing the thickness of the cover plate, can also ensure that the tuning bolt hole has enough threads to fix the tuning bolt, ensuring stability of the tuning bolt. |
