Basement Drain Problem

I have a drain in the basement floor near my furnace, which my dehumidifier hose is routed to. Its about 8-9 inches in diameter, seems to be made of of steel has two "tabs" that come in about an inch from each edge about 180 degrees apart and mid-way between them (on the side of the drain) is a square plug about an inch on each side. My problem is the ball that is under the drain itself seems to get stuck and the weight of the water in the drain isn't enough to push the ball down so the water can run out. When that happens the water eventually runs onto the floor of the laundry room. I've been sticking something into the drain to hold down the ball, so the water can drain out. Is this type of drain poured into the concrete floor or is it just rusted in from being there 29 years such that I can take it out and replace it? Is it possible to buy a replacement drain for this or is there some other solution? I even tried putting some drain cleaner in the drain to see whether it might clean up the ball so the water could push it down, but that didn't work either.

Unless it's something really unique, the drain is made from cast iron. It is poured into the concrete. The only way to replace it is to remove the concrete.

The ball is an optional device used to keep the drain from backing up into the basement. In theory, the water level will drop low enough that the ball will no longer seal against its seat.

Chances are that the drain is plugged and needs cleaning. The square plug on the side can be taken out one way or another with proper tools and the drain thoroughly cleaned. The ball should also be removable so that the trap itself can be cleaned. These traps have a very short bend and often are difficult to clean through. There should be a ring holding the ball in place and it's in a 2" thread. It may no longer be serviceable. In that case, breaking the concrete and replacing the drain may be the best option.