Screw Sludge Dewatering Press Sludge Press Machine

Product Description

Product Overview

SET OF SLUDGE DEWATERING EQUIPMENT

* Product description 

Multi-Disk Screw Press belongs to the screw press, it's clog-free and can reduce the sedimentation
tank and sludge thickening tank, saving the cost of sewage plant construction. MDS using screw and the moving rings to clean itself as clog-free structure, and controlled by the PLC automatically, it's a new technology that can replace the traditional filter press like belt press and frame press, the screw speed is very low, so it cost low power and water consumption in contrast to the centrifuge, it is a cutting edge sludge dewatering machine. 

Dewater Principle

The initial section of dewatering drum is the Thickening Zone, where the solid-liquid separating process takes place and where the filtrate will also be discharged. The pitch of the screw and the gaps between the rings decrease at the end of dewatering drum, hence increasing its internal pressure. At the end, the End Plate further increases the pressure, so as to discharge dry sludge cake.

Automatic Polymer Dosing System

 

Sludge Cutter

Shaftless screw conveyor

*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.

(2) Spiral shaft 

 

The spiral shaft is composed of taper shaft and spiral blade, Using hard material surfacing is applied to the outer circle of the spiral blade, then thermal spraying is applied to the surface of the whole shaft, and then grinding is applied to the outer circle of the spiral blade,. And finish turning the shafts at both ends to ensure the coaxiality and surface finish of the two shafts. 

 

 

(3) Driving device

Using first-class reducers, Nord or SEW are optional due to your actual needs. The protection grade of the motor is IP54 and the insulation grade is f. Explosion proof motors can also be used according to customer requirements, and frequency conversion starting and speed regulation methods can be adopted to adapt to different application conditions and avoid the impact of load.

 

(4) Filtrate tank

The filtrate tank is welded by stainless steel 304 plates to collect the filtrate filtered by the main body of the screw stack. and a flange is set on the side of thefiltrate tank to connect with external equipment.

 

(5) Hybrid system

It is mainly used to mix the sludge with the main body to form alum for dehydration. The mixing tank is provided with a mud inlet, an overflow port and a vent, and a liquid level regulating device, so that the feed rate of sludge can be adjusted.

 

(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.

PRODUCT CONFIGURATION

ADVANTAGES OF TECHNOLOGY

* Broad applications: lt is widely used for sludge dewatering in municipalsewage,food,beverage,printing and dyeing, petro-chemical, papermaking, leather, pharmaceutical andother industries,especially oily sludge. 

* Low energy cunsumtion and no noise: There is no need for large bodies such as rollers, andthe speed is low, only 2-4 revolutions per minute.Theunit power consumption is only 0.01-0.1kw H/ kg-ds.Reduce the operation cost of sludge dewatering. 

* Non clogging, self-cleaning: Under the action of the rotation of the screw shaft, the moving ring and the static ring are constantly stag gered,so as to realize the continuous self-cleaning process and avoid the blockage of the traditional dehydrator.Therefore, it has strong oil resistance, easy separation,no blockage, no need for high-pressure water cleaningand no secondary pollution. 

* Fully automatic, continous operation : Cooperate with PLC automatic control system for program setting to realize 24-hour continuous unmanned operation. From pumping out sludge, injecting chemicals and removing sludge, the continuous automatic operation of sludge dewatering is truly realized.

* Save cost and investment 

PRODUCT SPECIFICATIONS

SIMILAR PRODUCTS

Application

Application in Various Industry Exclusive pre-concentration design, applicable for sludge of concentration from 2000mg/L to 50000mg/L. Besides, Due to the innovation of the structure design, it is highly suitable to oil sludge

PRODUCT PACKAGING

If you are interested in our machines, please feel free contact us: