EDI Batching issue

Hi,
I having problem in batching.
I want to send EDI 810 in batch file to partner. I have created receive port with EDIRecive pipe and send port with EDISend pipe. Send port filter is DestinationPartyID = party name and ToBeBatched = fales. I set these same as interchange batch creation setting in the party. I set the ReceiveportName = my received port in the interchange batch filter. I have started all the batching orchestration.
when i drop the edi file in the infolder for batching , I am getting 3 out put files. two are mixed of 810 and 997 with TA1 segment. Why do I get this TA1 and 997 in the out put batch?
I am also getting batched 997 files in the same out folder. Why do i get this 997? 
Am i missing any set up? how can I set process to batch and send edi files to destination?
Thank you in advance,

Siva