Seeded fourth in the qualifying event, left-handed Divij and Purav received a walkover from their second round opponents, Andreas Haider-Maurer from Austria and Jiri Vesely of Czech Republic.
The Indian representation has increased at the Wimbledon with Leander Paes, Mahesh Bhupathi and Rohan Bopanna already there in the men's doubles event.
It is a big career boost for Divij and Raja, who are regular partners on the Challenger Tour.
This season they have made four finals, winning the Kyoto event and ending runners-up at Nottingham, Johannesburg and Leon, Mexio.
Divij had played against New Zealand in Chandigarh, where he combined with Vishnu Vardhan for the doubles rubber.
Raja had played against South Korea in New Delhi in company of Leander Paes.