It seems a little much for a vacuum adapter, doesn't it? And the inlets are all in the wrong relative places to be a gas bubbler.
I can't really figure it out either.
What about some kind of continuous distillation collection piece? If the left side inlet were connected to a condenser from a short path distillation head then the distillate would collect in the tube on the far right until it filled enough to drain out the tube on the bottom. The inlet on the top could be an gas inlet so that you could keep everything under nitrogen or vacuum.
Similarly, it might be a continuous extractor. If you had a dense, immiscible solvent in the tube on the right and had it set so that the tube on the right was pointing down in the reaction set up, then you could distill out some material from your reaction through the inlet on the left of the picture. As the distillate collected in the tube, the lighter organic phase would float to the top until enough collected to drain back through the tube in the bottom of the picture and back into the initial reaction. Any materials in soluble in the dense solvent would be extracted into the dense solvent right after they distilled over. This would allow you to use a very small amount of the dense solvent and essentially you would never stop extracting the distillate. The inlet on the top of the picture could again be used for nitrogen inlet.
I've never seen a continuous extractor that looked like this though. They usually look like this.