Product Information
In rectangular grit chambers at municipal wastewater plants, efficiently pulling heavy grit off the bottom without stirring up the water is a real challenge. The QXS bridge-type grit suction machine is a professional Traveling Grit Collector. It spans the top of the tank and uses a smooth traveling mechanism along with submersible pumps to directly suction the grit-water mixture settled at the bottom. This not only cleans the grit thoroughly with no dead zones but also significantly reduces the safety risks of manual cleaning.
Get a QuoteTraveling Grit Collector|QXS Bridge-Type Grit Suction Machine|Rectangular Tank Grit Removal
Working Principle
The bridge spans the tracks on both sides of the rectangular tank and travels slowly back and forth, driven by a motor. A suction pipe and submersible pump hang below the bridge, with the inlet positioned close to the tank floor. As the unit moves forward, the pump uses negative pressure to draw the grit-water mixture into the pipe, which is then carried through the discharge main to a grit-water separator outside the tank. This Traveling Grit Collector is usually equipped with limit switches and level controls, allowing it to run on a scheduled or continuous basis depending on how much grit has built up.
Application Fields
1.Municipal wastewater grit chambers: continuous or intermittent suction of bottom grit in rectangular grit chambers.
2.Stormwater retention tanks: clearing settled coarse sand and gravel after heavy rain.
3.Steel and metallurgical wastewater: suctioning mill scale at the bottom of blast furnace and rolling wastewater settling tanks.
4.Water treatment plants: automated sediment cleanup in intake forebays.
FAQ
Q1: What is the difference between this Traveling Grit Collector and a traditional grit scraper?
A: A grit scraper uses mechanical blades to push the grit, requires a sloped tank floor, and the blades wear out easily. This equipment uses a pump to suction directly, so the tank floor can be relatively flat without structural damage, and it extracts a higher concentration of grit.
Q2: Does the grit pump clog easily?
A: Generally not, if designed properly. The suction pipe inlet usually features a special bell mouth or agitation device to prevent large debris from entering the pump. If the influent contains a lot of long fibers or plastics, a fine screen should be installed upstream.
Q3: Can the traveling speed be adjusted?
A: Yes. The drive motor is typically controlled by a VFD, with a traveling speed usually between 0.5 and 1.5 m/min. The slower the speed, the longer the pump suctions at one spot, and the higher the concentration of the grit-water mixture.