| 摘要 |
The device includes an elastic ring to prevent the moving core suffering kickback when returning. The injector comprises a body (1) in which there is an injection tube (2) comprising a seat (3). Opposite the seat there is an axially sliding closure element (5) in a sleeve (10), driven to the closing position by a spring (18), and in the opening direction by an electromagnet (4) with a variable air gap. The air gap is defined between the closure element and a ferromagnetic core (11), against which the closure element is urged to stop in the opening position. The closure element (5) is pressed against a damping element (13) in the form of an elastic ring which is itself pressed against the seat (3) of the tube (2). |
