If you wish to "juice" then one would suggest a juicer to be the most appropriate.
Blenders aren't really a tool of choice for raw vegetables, such as carrots. A food processor would be what one would require.
I see, it makes sense i think i need a juicer not a blender, as most people use blenders to make fruit juices and a lot of juicers available around its confusing to choose which is better, there are high speed, masticating juicers and twin gears to choose from.