What are the structural composition and advantages of the screw type sludge dewatering machine?

Stacked screw sludge dewatering machine is widely used, it has some complex structure, but there are many advantages in application, which greatly facilitates industrial production, but I believe many friends don't know his advantages very well. Next, this paper will share with you some contents about the structure composition and advantages of stacked screw sludge dewatering machine, hoping you can enjoy it Happy.

1、 Structure composition of stacked screw sludge dehydrator（1） Spirochete

The superposed screw body is composed of fixed ring, floating ring, spiral shaft, screw, gasket and several connecting plates. The whole superposed screw body is made of stainless steel 304. The fixed ring is connected by six screws, and the gasket and floating ring are installed between the fixed rings. The fixed ring and floating ring are made of wear-resistant materials, so that the service life of the whole machine is long. The spiral shaft passes through the fixed ring and the floating ring The moving ring is in the middle, and the moving ring is sheathed on the screw shaft.

The main body is composed of multiple fixed rings and floating rings, and the spiral shaft runs through the filtering device formed therein. The former section is the thickening section, and the latter section is the dewatering section. The thickening and pressing dewatering of sludge are completed in one cylinder. The traditional filter cloth and centrifugal filtration mode are replaced by a unique and delicate filter body mode. After gravity concentration in the thickening section, the sludge is transported to the dewatering section. In the process of moving forward, with the gradual reduction of the filter gap and screw pitch and the blocking effect of the back pressure plate, the maximum internal pressure is generated, and the volume is continuously reduced, so as to achieve the purpose of full dewatering.

（2） Screw shaft

The spiral shaft is composed of taper shaft and spiral blade.

Firstly, the spiral blade is cut by laser cutting, and the taper shaft is poured and shaped for rough machining. Then, the spiral blade and taper shaft are welded by full welding. According to the working condition of the stacked screw sludge dewatering machine, the outer circle of the spiral shaft blade directly contacts with the traveling ring, which produces friction, and the surface of the blade has been in contact with the sludge, which produces some wear. Therefore, our company adopts the Treatment process: first, the outer circle of the spiral blade is overlaid with hard material, then the surface of the whole shaft is thermally sprayed, and finally the outer circle of the spiral blade is ground, and the shafts at both ends are finely turned, so as to ensure the coaxiality of the two shafts and the surface finish of the shaft. （3） the driving device is the power source of the equipment, and the performance of the driving device will directly affect the performance of the whole machine Our company selects domestic motor and reducer brands with superior performance, with motor protection grade of IP54 and insulation grade of F. It can also use explosion-proof motor according to customer's requirements, and adopt frequency conversion starting and speed regulation mode to adapt to different application conditions and avoid the impact of load.

（4） Filtrate tank

The filtrate tank is welded by stainless steel 304 plate, which is used to collect the filtrate filtered by the main body of the screw stack. The filtrate tank is connected with the frame body by screws around, and a flange is set on the side of the filtrate tank to connect with the external equipment.

（5） Hybrid system

The mixing system is mainly used to fully mix the sludge with the reagent to form alum flower, and then put it into the main body of screw stacking for pressing and dewatering.

The mixing tank is provided with a sludge inlet, an overflow port and a vent, and a liquid level regulating device, so as to adjust the sludge feed rate.

（6） Frame body

The frame body is welded by high-strength channel steel, and the surface is treated with anti-corrosion treatment. The overall welding effect is good and the rigidity is good.

2、 What are the advantages of stacked screw sludge dehydrator（1） The stacked screw type sludge dehydrator can treat low concentration sludge without building thickening tank, which saves civil engineering cost.

（2） The stacked screw type sludge dewatering machine is equipped with an automatic washing device, which can wash the sludge produced by the equipment, and the equipment will not be blocked, which saves the labor cost and replaces the disadvantages of the traditional plate and frame equipment.

（3） The stacked screw type sludge dewatering machine has high efficiency, high automation, 24-hour unmanned continuous operation, high efficiency and obvious low efficiency of plate and frame filter press.

（4） The stacked screw type sludge dewatering machine is made of 304 stainless steel, with high wear resistance and corrosion resistance and long service life.

（5） The stacked screw type sludge dehydrator has small volume and saves floor area.

（6） The stacked screw type sludge dewatering machine operates at low speed and consumes low power. The disadvantages of the stacked screw type sludge dewatering machine are mainly that the treatment capacity is smaller than that of the plate and frame, the inorganic sludge can not be treated, the cost is relatively high, and the loss cost of equipment accessories is high.

The above is today to share with you some of the structure of the stacked screw type sludge dehydrator, what are the advantages of the content, more problems can continue to pay attention to us.