Yes, I agree that the bump house or "bounce house" blower is a good blower for a gasifier as long as you don't try to use it with hot gas.
I have one that I use as my backup for my JXQ-10 system. And we bought a couple of them to use for our iron smelting runs. They seem to work just fine for continuous duty. There are a few different styles, so look around for the style that is easiest to convert for connections to the suction side.
Pepe is talking about the price of a USED one. They can get pretty expensive if you have to buy them new.
Look carefully at the power. I think you will want one that is rated at 600 watts or more.
There are many of them on ebay, but I have had pretty good luck using my local online auction house.
You need to find the seller whose bounce house has failed and has only the blower left and doesn't know what to do with it.