Protective device for chemical pipeline connection

The utility model relates to the technical field of chemical engineering, and discloses a protective device for chemical pipeline connection, which comprises a base, a box body is fixedly mounted on the upper surface of the base, supporting plates are fixedly mounted on two sides of the box body, arc-shaped plates are fixedly mounted on the upper surfaces of the supporting plates, one side of each arc-shaped plate is communicated with one side of the box body, and the other side of each arc-shaped plate is communicated with the other side of the box body. Limiting plates are fixedly installed on the two sides of the box body, and limiting rods are inserted into the limiting plates. According to the protective device for chemical pipeline connection, a limiting rod on a limiting block is pulled upwards, then the limiting rod drives a clamping ring to move upwards, a sealing ring on the clamping ring is separated from an arc-shaped plate, a pipeline is placed in the arc-shaped plate, then the limiting rod is lo