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Working principle and advantages of stacked screw sludge dehydrator

Nowadays, there are many kinds of sludge dewatering equipment in the market. As a new type of sludge dewatering equipment, the stacked screw sludge dewatering machine is more and more popular. Today, let's talk about the working principle and advantages of the stacked screw sludge dewatering machine。

1、 Working principle of stacked screw sludge dehydrator

1. Concentration

When the screw pushes the shaft to rotate, the multiple fixed and movable laminations arranged on the periphery of the pushing shaft move relatively. Under the action of gravity, the water is filtered out from the relative moving lamination gap to realize rapid concentration.

2. Dehydration

The thickened sludge moves forward with the rotation of the screw shaft; along the outlet direction of the sludge cake, the pitch of the screw shaft gradually decreases, the gap between the rings also gradually decreases, and the volume of the spiral cavity constantly shrinks; under the action of the back pressure plate at the outlet, the internal pressure gradually increases, and under the continuous operation of the screw shaft, the water in the sludge is squeezed out, and the filter cake contains water With the increase of solid content, the continuous dewatering of sludge is realized.

3. Self cleaning

The rotation of the screw shaft drives the traveling ring to rotate continuously. The equipment relies on the movement between the fixed ring and the traveling ring to realize the continuous self-cleaning process, so as to skillfully avoid the common blockage problem of the traditional dehydrator.

2、 Advantages of stacked screw sludge dehydrator

1. It is widely used

It is suitable for municipal sewage, food, beverage, chemical industry, leather, welding material, papermaking, printing and dyeing, pharmaceutical and other industries. It is suitable for dewatering of high and low concentration sludge. When dewatering low concentration (2000mg / L -) sludge, there is no need to build thickening tank and storage tank, which can reduce the construction cost, phosphorus release and anaerobic odor generation.

2. Small design

The design is compact. The dehydrator includes an electric control cabinet, a metering tank, a flocculation mixing tank and the main body of the dehydrator. Small space, easy to repair and replace; small weight, easy to carry.

3. Not easy to block

It has the function of self-cleaning. There is no need to clean to prevent the filter gap from blocking, so as to reduce the water consumption and the burden of internal circulation. Good at dewatering oily sludge.

4. Low speed operation

The rotating speed of the screw shaft is about 2 ~ 3 rpm, and the electrode consumption is low. Less trouble, less noise and vibration, safe operation.

5. The operation is simple

Through the electric control cabinet, it can be connected with the drug foaming machine, sludge pump and dosing pump to realize 24-hour continuous unmanned operation. The daily maintenance time is short and the maintenance work is simple.

6. Durable

Almost all of the body is made of stainless steel, which can maximize the service life. The replacement parts are only spiral shaft and traveling ring, and the service cycle is long.

The above is Xiaobian's detailed introduction on "working principle and advantages of stacked screw sludge dehydrator". If you have other questions, please keep paying attention to us!