*Structure and working principle
The stacked screw sludge dehydrator is composed of stacked screw body, driving device, filtrate tank, mixing system, frame body, etc.When the stacked screw sludge dehydrator works, the sludge is lifted to the mixing tank through the sludge pump. At this time, the dosing pump also quantitatively transmits the chemical solution to the mixing tank. The mixing motor drives the whole mixing system to fully mix the sludge and the chemical solution, resulting in alum. When the liquid level reaches the upper position of the liquid level sensor, the liquid level sensor receives a signal to make the main motor of the stacked screw work, so as to start pressure filtration of the sludge flowing into the stacked screw main body, Under the action of the screw shaft, the sludge is lifted to the sludge outlet step by step, and the filtrate flows out from the gap between the fixed ring and the swimming ring.
(1) Stacked spirochete
The stacked screw body is composed of fixed ring, traveling ring, spiral shaft, screw, gasket and several connecting plates. The whole stacked screw body is made of stainless steel 304.The fixed ring is connected together through six screws. Gasket and traveling ring are installed between the fixed rings. Both the fixed ring and traveling ring are made of wear-resistant materials, so that the service life of the whole machine is long.
The main body is a filtering device formed by multiple fixed rings and swimming rings, through which a spiral shaft passes. The front section is the concentration section and the rear section is the dehydration section, which completes the sludge concentration and pressing dehydration in one barrel, replacing the traditional filter cloth and centrifugal filtration mode with a unique and subtle filter body mode. After gravity concentration in the concentration section, the sludge is transported to the dehydration section. In the process of moving forward, with the gradual reduction of filter joint and pitch and the blocking effect of back pressure plate, great internal pressure is generated, and the volume is continuously reduced to achieve the purpose of full dehydration.