| 摘要 |
The present invention relates to a vacuum pump installed on a vacuum container, the vacuum pump comprising: a cylinder main body provided with a space and a moving hole therein; a cover coupled to the cylinder main body and providing a receiving space therein; a piston part installed in the receiving space so that a section thereof is externally exposed through the moving hole; and a resilient member having one end thereof supporting the bottom of the cover and the other end thereof installed to support the piston part. The piston part divides the receiving space into an upper first space and a lower second space, and includes: a partitioning plate installed to support the inner circumferential surface of the cylinder main body when the cylinder main body is moved; a tube-shaped rod installed to be wedged into the bottom of the partitioning plate, having a portion thereof installed to be externally exposed through the moving hole, and provided with a through-hole; and a support installed on the bottom of the rod to be removable, and having a communicating hole provided to communicate with the inside of the rod. Accordingly, the vacuum pump has a simple structure so that the production cost is low, is easy to manufacture, and is easy to maintain and repair when damaged. |
