Spray drying tower inlet airflow uniform distribution structure and spray drying system

The utility model discloses a spray drying tower inlet airflow uniform distribution structure and a spray drying system. The spray drying tower inlet airflow uniform distribution structure comprises a first elbow, a second elbow and a connecting pipe. The first elbow is of an arc-shaped elbow pipe structure, the first elbow is provided with a first lower end inlet and a first upper end outlet, a plurality of first arc-shaped flow guide plates are arranged in the first elbow, and the first arc-shaped flow guide plates are arranged on the first elbow at intervals in the radial direction of the arc-shaped elbow pipe structure; the second elbow is of an arc-shaped elbow pipe structure, a second lower end outlet and a second upper end inlet are formed in the second elbow pipe, and a plurality of second arc-shaped flow guide plates are arranged in the second elbow pipe in the radial direction of the arc-shaped elbow pipe structure at intervals; the connecting pipe is provided with a first connecting end and a secon