B. Backpressure plate gap

During equipment operation and debugging, we typically adjust the back pressure plate

b. The gap is adjusted to control the mud cake moisture content. The smaller the gap of the back pressure plate is adjusted to, the lower the mud cake moisture content will be.

c. As the gap of the back pressure plate is adjusted to be larger, the mud cake moisture content becomes higher.

C. Spiral blade lead angle

The distribution of the spiral blades on the spiral shaft within the screw main is not random; it is a ***reasonable distribution arrived at through countless operation tests. The pitch angle of the spiral blades is adjusted differently based on the nature and concentration of the sludge being treated.

D. Length of the helical shaft body

a. Each manufacturer's specifications for their screw press sludge dewatering machines vary. Some producers' equipment isn't fully developed, or to cut costs, the screw press's specifications fall far short of the required standards, with excessive length and significantly reduced operation time in the concentration and dewatering stage, leading to a drastically lower moisture content in the sludge cake.

E. Wastewater concentration and dosing ratio of treatment agents

The concentration of wastewater and the sequence and ratio of adding treatment agents greatly affect the moisture content of sludge cakes. This requires on-site adjustment personnel to add treatment agents rationally based on wastewater concentration to achieve an ideal effect. If the wastewater concentration changes after the addition ratio is set, the ratio of treatment agents added should also be adjusted accordingly.

Caution: Do not adjust the gap of the back pressure plate below 4mm.

Once the rotational speed of the helical shaft is adjusted, the machine's various components must also be correspondingly adjusted.

As the amount of slurry increases, be mindful of the liquid level; it must not exceed the high liquid level (H position) in the flocculant mixing tank to ensure continuous dewatering.

Screw Press Sludge Dewatering Machine

The motor frequency of the concentrated cross-section is primarily controlled by the filtration of free water from sludge, with the motor frequency generally maintained between 15Hz to 20Hz. The motor frequency on the news section is mainly for adjusting the movement speed of the news section. The higher the frequency, the faster the filtration speed of the screw sludge press filter, resulting in thinner sludge cakes. The motor frequency of the pressure machine is generally adjusted based on the thickness of the sludge cake and the sludge around the filter belt. The frequency of the crushing section motor is typically between 25Hz to 35Hz. The frequency of the excess sludge pump is related to high sludge concentration and dewatering. When the sludge concentration is low, the frequency increases, and the sludge input also increases. For high sludge concentration, the frequency of the screw sludge press filter selection decreases, and the sludge input is reduced. The frequency adjustment of the remaining pump also considers the concentration of the flocculant solution and the mechanical load of the belt conveyor. The dewatering machine is part of the dewatering system, while other equipment serves the dryer. Therefore, to ensure the normal operation of the dryer, the normal operation of other equipment must be guaranteed.

During the screw press operation, the following issues may arise: filter belt misalignment. The filter belt misalignment refers to the offset of the filter belt on the outside of the control rod, triggering the deviation alarm switch. Normally, to counteract the filter belt deviation control rod, the cylinder adjusts the filter belt deviation correction direction, not the super part. This may be due to the valve not receiving the filter belt deviation signal. In the case of Kenli screw press sludge press filter machine, the rectification cylinder is not functioning, check the integrity of the rectification components, the integrity of the rectification circuit, and the integrity of the气管. Rectification measures, purchase of screw press sludge press filter machine, rectification of work rolls. Poor filter performance. The poor performance of the filter belt may be due to insufficient backwash water pressure, nozzle blockage, poor sludge flocculation effect, and excessive presence of flocculants. Slurry operation of the dewatering machine. The slurry operation of the screw press may be due to a large amount of slurry and poor flocculation effect. Thin sludge cake on the dewatering machine.

Sludge cake is lower, possibly due to lower concentration of remaining sludge, less slurry input, poor flocculation effect, and faster breakdown in the crushing section. The screw press system has two control programs: automatic operation and manual operation. The manual operation sequence for the screw press is as follows: turn on the equipment and prepare to start the air compressor——add flocculant solution——tighten the belt of the filter press——partially start the motor based on the motor's startup concentration——open the recycle pump, feed pump, and remaining sludge pump——start the spiral conveyor. For automatic operation, simply press “Automatic Run”——“Start Automatic Run.” In automatic operation, the spiral conveyor needs to be manually started. The operating parameters of the dryer can be adjusted based on two operating conditions. Always check if the pipeline valves are open before turning on the equipment.

Screw Press Sludge Dewatering Machine Working Principle

The Screw Press Sludge Dewatering Machine utilizes the screw extrusion principle, employing the powerful pressure generated by the variation in screw diameter and pitch, along with the tiny gap between the sliding ring and the fixed ring, to achieve a new type of solid-liquid separation device for squeezing and dewatering sludge.

The screw press sludge dewatering machine employs a multi-layered spiral pressing filtration method with self-cleaning filter slots, preventing clogging and saving water and electricity. It has set a precedent for directly dewatering low-concentration sludge (2000mg/L～) and can operate continuously for 24 hours unattended, significantly reducing costs for design, construction, operation, and maintenance management.

Leling Screw Press Sludge Dewatering Machine - Hengman Environmental Protection - Screw Press Sludge Dewatering Machine for Sale, provided by Dezhou Hengman Environmental Protection Technology Co., Ltd. Dezhou Hengman Environmental Protection Technology Co., Ltd. has dedicated much enthusiasm and passion to the wastewater treatment equipment field. Hengman Environmental Protection always focuses on customers, creating value for them, and wins the market with quality and service. We sincerely hope to collaborate with all sectors of society to create success and brilliance together. For related business inquiries, please contact Manager He.