With the progress of society, people's living standard has been gradually improved, so the requirement for tools has become higher and higher. In the case of people's appeal and technology's improvement, there has been a sludge dewatering screw press. The superimposed screw sludge dewatering machine is a set of automatic control cabinet, flocculation and conditioning tank, sludge thickening and dewatering body and collecting tank. Under the condition of fully automatic operation, it can achieve high efficiency flocculation, and continuously complete the sludge thickening and pressing dewatering work. The scab will eventually collect the filtrate back or discharge. Here to understand the composition of the sludge dewatering screw press.
1. superposition spiral
The laminated screw body is composed of a fixed ring, a moving ring, a screw shaft, a screw, a gasket and a number of connecting plates. The fixed ring is connected by six screws. A gasket and a moving ring are installed between the fixed rings. The fixed ring and the moving ring are made of wear-resistant materials, which makes the whole machine have a long life and the screw shaft is fixed. The ring and the swimming ring are in the middle, and the swimming annulus is sleeved on the spiral shaft.
2. helix axis
The spiral shaft is made up of an axle and a spiral blade, and the shaft is welded by the shaft and the hollow shaft. In group welding, the shaft and hollow shaft are welded first, and then rough turning is carried out to ensure the coaxiality of the two ends of the shaft. Then the spiral blade and shaft are welded by full welding.
3. driving device
Drive device is the power source of the equipment, the performance of the drive device will directly affect the performance of the whole machine. For this reason, we choose the motor with superior performance, the motor protection level is IP54, the insulation level is F. The motor conforms to the IEC standard and the power supply is 380V AC/3PH/50 Hz.
4. filter tank
The filter tank is welded by plates and is used to collect the filtrate filtered by the pressure of the main body of the laminated snail. The filter tank is connected with the rack body by screws around the filter tank, and a flange is arranged on the side of the filter tank to connect with the external equipment.
5. hybrid system
The mixing system is mainly used to mix the sludge and the reagent sufficiently to form the alum flower and press it into the snail body for dehydration.
What are the characteristics of the structure of the sludge dewatering screw press?
With the continuous development of various new materials and technologies, many domestic companies have begun a series of innovations and improvements, such as the improvement of spiral shaft, wear-free structure, industry-specific models. What are the characteristics of the structure of the sludge dewatering screw press? Let's take a look at the specific introduction below.
Structural characteristics of sludge dewatering machine:
(1) the spindle is mainly made of high quality steel after heat treatment and finishing.
(2) there is a brake opening arm in the machine, and the braking performance is good, so that the machine can stop quickly.
(3) The inner barrel and outer shell of the industrial screw-folding sludge dewaterer are made of stainless steel plate, the swivel is made of stainless steel plate, the cage base, the chassis is made of cast iron, and the outlet pipe is under the chassis.
(4) Sludge dewaterers are all three-legged pendulum structure, which can avoid foot vibration due to unbalanced load in the rotor.
(5) The transmission part is driven by triangular belt, and the centrifugal starting wheel is directly driven by the motor, so that the machine can start slowly and reach the designed speed step by step, so as to ensure the smooth operation of the machine.
Working principle of sludge dewatering screw press:
The spiral sludge dewaterer is mainly composed of a high-speed drum, a screw conveyor with a hollow shaft and a differential with the same rotating speed as the drum and a slightly lower rotating speed than the drum. When the suspension to be separated is fed into the drum by a hollow rotating shaft, it is immediately thrown into the drum cavity under the action of centrifugal force generated by high-speed rotation.
Because of the different rotational speeds of the helix and drum, there is relative motion (i.e. the difference of rotational speed). The sludge in the solid ring layer is pushed slowly to the cone end of the drum by the relative motion of the helix and drum, and the sludge in the liquid ring layer is discharged continuously from the outlet of the circular distribution of the drum after passing through the drying area. The separation fluid is formed outside the drum.
Composition of sludge dewatering screw press