Network security protection physical isolation device

The utility model discloses a physical isolation device for network security protection. Wherein the dismounting mechanism is arranged in the middle of the main body; the protection mechanism is arranged on one side of the main body; the dismounting mechanism comprises a limiting sliding plate; a shell is arranged in the middle of the main body; the limiting sliding plate is located in the middleof the top end of the shell. Limiting sliding grooves are formed in the two sides of the top end of the shell, limiting sliding columns are arranged at the positions, corresponding to the limiting sliding grooves, of the two sides of the limiting sliding plate, limiting holes are formed in the two sides of the top end of the shell, and limiting springs are arranged at the positions, correspondingto the limiting sliding plate, in the limiting holes. Due to the arrangement of a limiting sliding groove and a limiting sliding column, the network security isolation device is convenient to detect and disassemble; and only t