Horizontal spiral sedimentation centrifuge is referred to as decanter centrifuge, it is a horizontal spiral discharge, continuous operation of high-efficiency centrifugal respectively, dehydration equipment.
Types:Decanter centrifuge can be generally divided into horizontal spiral filter centrifuge and horizontal spiral sedimentation centrifuge.
Scope of application:Decanter centrifuge is suitable for the progress of sludge dewatering produced in the process of industrial and civil sewage treatment, but also widely used in chemical, light industry, pharmaceutical, food, environmental protection and other industries.
Working principle: the drum and the spiral to a certain difference in speed in the same direction of high-speed rotation, the material from the feed pipe continuously introduced into the feeding spiral barrel, accelerated into the drum, under the action of centrifugal force field, the heavier solids deposited on the wall of the drum to form a slag layer. The feeding screw will continuously push the deposited solids to the cone end of the drum, and then discharged out of the machine through the slag discharge port. The lighter liquid-phase material forms the inner liquid ring, which continuously overflows out of the drum from the overflow port at the big end of the drum, and is discharged out of the machine through the liquid discharge port. This machine can continuously feed, separate, wash and discharge under full speed operation.
Performance Advantages：
1. Good adaptability: In the process, we have fully considered the material and process of centrifuges to put forward various special requirements, the main components of the implementation of the specialization and adjustability of the optimization of the design. As long as the user before the purchase of the machine on its installation and use of the place, material handling physical and chemical properties, process requirements, etc. Progress description, we will supply the user with the most suitable models.
2. High degree of automation: centrifuge in the work of feeding, separate, unloading, and other processes are in high-speed operation under continuous automatic progress. Withstand the programmable controller to realize the centrifugal separation and centrifugal washing process of automatic control.
3. Good running stability: The differential used in centrifuges is a cycloid differential or planetary differential, which is characterized by large torque and wide adjustment range.
4. Strong craftsmanship: centrifuge bear double motor double frequency conversion energy reaction difference speed system master to difference speed progress flexible stepless adjustment, and according to the change of the material at any time to adjust the difference speed. Real energy-saving products.
5. Good operating environment: centrifuge on the material is completely closed under the conditions of progress to ensure that the operation site is clean and pollution-free, and keep the production environment clean and sanitary, to achieve civilized production.
6. Safety protection devices are complete and reliable: centrifuge with torque protection, power mastery and other multiple protection, can effectively solve or reduce the damage caused by sudden failure of the machine.
7. Beautiful modeling: the machine’s base bear high-quality carbon steel welded together, the appearance of the special process, smooth and flat. Easy, generous, beautiful, giving people a sense of overall beauty.
Performance characteristics:The main parts are made of high quality carbon steel or stainless steel. Pusher to withstand special wear-resistant measures, can be set with carbide wear-resistant tile or surfacing carbide protective layer. Withstand the cycloid differential, low noise, strong load-bearing force.
Some comparisons of decanter centrifuge with plate and frame filter press and belt filter press.
① decanter centrifuge using centrifugal sedimentation principle, progress of solid-liquid separation, because there is no screen and filter cloth, will not cause clogging, while the belt machine and plate and frame machine using the screen and filter cloth to progress of solid-liquid separation, in order to ensure the filter performance of the filter screen and filter cloth to prevent the clogging of the filter material, need to use high-pressure water to constantly progress of rinsing, the formation of repeated secondary pollution.
② Centrifuges are suitable for the dewatering and thickening of various types of sludge, and belt and plate and frame machines are also suitable for various types of sludge, but for the remaining activated sludge, it is necessary to increase the amount of input chemicals, and due to the fine particles of sludge, the simplicity of clogging the filter media, resulting in difficulties in the dewatering of sludge, especially the sludge of the MBR process, which is currently being used in wastewater treatment plants.
③Centrifuge in the dehydration process when the feed concentration changes, the drum and spiral rotation and torque will be automatically tracked and adjusted to form a fully automatic operation, you can not set up a full-time operator, while the belt machine and plate and frame machine in the dewatering process when the material concentration changes, the belt machine belt speed, belt tension, the amount of dosage, rinse water pressure need to be adjusted, the operation requires a higher level of requirements; on the plate and frame machine, the time of the filter pressure and pressure For the plate and frame machine, the time and pressure of filter press are closely related to the concentration of the material, and the parameters have to be adjusted continuously with the change of concentration in order to reach the expected separate effect.
④ centrifuge occupies a small space, simple installation and commissioning, automated operation can be realized, supporting equipment only dosing and inlet and outlet conveyor, centrifuges can be fully enclosed operation, workshop and site environment is good; while the belt and plate and frame machine occupies a large area, supporting equipment, in addition to the dosing and inlet and outlet conveyor, you need to wash pumps, air compressors, sludge adjusters and other ancillary equipment, and the whole machine poorly enclosed, cleaning water mist and Odor pollution of the environment, such as bad management will also cause slurry overflow.