40d:Screw pump

A screw pump can lift water from below onto the same Z-level as the pump. Its is two tiles by one tile in size, and it can be either manually operated by a dwarf with the pump operator job or by using gear assemblies connected to water wheels and/or windmills. The direction you want the water to travel must be chosen at the time of construction. The light green X must be next to the water source and the dark green X is where the water exits the pump.

Construction

Building a screw pump requires an enormous corkscrew, a stone, wood, or glass block, and a pipe section. Having specified the direction of travel, you must ensure that the source side of the pump is placed adjacent to and above (in the z-axis) a liquid. The screw pump will draw the liquid up from below, and distribute it out of the other side of the pump. Screw pumps are constructions that can be removed to recover the building materials.

Example layout

TOP VIEW SIDE VIEW ▒▒▒▒▒▒▒▒▒ ▒▒▒▒▒,,,, ▒▒▒▒▒▒▒▒▒ ≈≈≈≈▒,▒▒▒ <--pumping ≈≈≈≈%% ≈≈≈≈%%··· ▒▒▒▒▒▒≈≈≈ reservoir (below)--> ≈≈≈≈▒▒··· ▒▒▒▒▒▒··· <--pumping (same level) reservoir (below)-->

Another example courtesy of Reynard of the forums

Bay12 forum thread.

1. Side view of the basic pump unit. Water is moved from the lower floor to the upper; notice how the front of the pump does not need a floor.
2. Side view of stacked screw pumps. Power is transmitted vertically through the missing floor tiles under the fronts of the pumps - no need for gearboxes in this design. The screw pump front prevents the water from flowing diagonally downwards.
3. Top view of the basic pump unit.
4. Top view with walls in place to prevent the receiving area from spilling out. If this is all it needed, these units could be stacked on top of each other, but it's missing one thing - dwarf access. There's no stairs/ramps, and no good place to put them either that wouldn't interfere with the adjacent levels' water containment.
5. Solution for a freestanding tower - fire escape! Sure, you could consolidate the up and downstairs into a single up/down stair tile, but I like the zigzag and symmetrical arrangement this one presents. Just build these on top of each other, flipping horizontally each time, and bam. Minimal yet aesthetic multi-level water pumping.

Notes

• The source of the pump must be directionally adjacent to "Open Space" that is directly above a filled pool of liquid.
• The pump tiles are passable by dwarves, but the front of the pump must be accessible to be operated manually.
• Active mechanisms connected to the pump will automatically start the pump; to prevent this either restrict water flow using floodgates, or put in a gear assembly linked to a lever to disconnect motion.
• Pumps can also be used in conjunction with a water wheel or a windmill to become self-powered.
• Pumps can not push water up additional Z-levels. That is, if you direct the output of a screw pump into a 1-square space surrounded by walls, the water will not "overflow" the walls.

External links

• [DFMA] Ingame Video titled Using a Pump showing manual operation of a pump