external HD doesn´t mount

Friends.

My external HD doesn't mount after that hung up without ejecting.
I was in a hurry, so I tried to eject but was not allowing, then I shut down the HD through his button turns on or off of and went away.
When I connect it again, was not working more.
It showing normaly in disk utility, but does not mount.
When you click to repair the disc it says "Link of imams invalid" and no repairs ...

It is not possible that the HD lose the partition not only by ejecting.

please help me

It's possible your external hard drive has become corrupted to where it can no longer be read by the system, therefore will not mount. Sometimes, when force shutting down a HDD instead of ejecting it, partition information gets lost or corrupted because the system is still trying to write and read from it.

You can try using First Aid from Disk Utility and verify\repair the disk. If that doesn't work or won't work, you may have to erase the drive and re-format.

Regards.

Or DiskWarrior may be the go if you have it? A vital tool for drive maintenance!