1、 Product Introduction
The PLD series products are intermittent batch processing and separation equipment. After unloading, the filter bags are in a regenerated state, with good filtration effect, high efficiency, and effective reduction of the impact of residual filter cake layer on material filtration performance. It avoids cross contamination of material separation, meets GMP and FDA requirements, and can achieve remote intelligent control, automated production, and online fault diagnosis.
operational principle
The material to be separated is added to the high-speed rotating centrifuge drum through the feed pipe. Under the action of the centrifugal field, the material is filtered through the filter cloth, and the liquid phase is discharged through the outlet pipe. The solid phase is intercepted in the drum. When the drum is filled with material, stop feeding and de liquid; Wash the filter cake while filtering out the washing solution. The centrifuge continues to rotate to spin dry the filter cake. After the filter cake meets the separation requirements, the centrifuge slows down and uses a scraper to scrape the filter cake down and discharge it from the bottom outside the machine. The centrifuge slows down again, and the pneumatic bag pulling device moves up and down to shake off the residual filter cake, achieving complete removal of the filter cake.
2、 Product features
1. smoother unloading
The automatic scraping device has speed regulation and distance adjustment functions. The scraper adopts multiple structural designs such as double-edged blades (wear-resistant: alloy blades, wear-resistant coatings, etc.), optimizes cutting angles, reduces scraping resistance, and can choose layered scraping technology for harder materials.
2. Smoother operation
Adopting liquid damping vibration reduction technology and a non foundation installation form, it effectively reduces the vibration of the centrifuge and facilitates the installation and maintenance of the machine.
The square box design of the base increases the weight of the chassis, reduces the center of gravity of the centrifuge, and reduces vibration speed.
3. Quick replacement of filter bags
The detachable drum liquid blocking plate design, self-locking and reliable, scientific filter cloth fixing module design (tightening device+quick installation structure), can quickly complete filter cloth replacement.
4. Fully processed drum
100% weld seam inspection, high processing accuracy, large filtering area, conducive to the filtration of ultrafine particles.
2. Fully enclosed structure
The material is completely isolated from the transmission, meeting the internal nitrogen protection of the equipment, effectively avoiding material pollution, and ensuring personnel safety.
6. Multiple security protection and guarantee
Equipped with over vibration protection, over current protection, temperature control protection, scraper in-situ protection, scraper stroke protection, cover opening protection, interlocking protection, scraper blockage protection, nitrogen protection, etc.
3、 Structural diagram and principle

1. Working principle
The material to be separated is added to the high-speed rotating centrifuge drum through the feed pipe. Under the action of the centrifugal field, the material is filtered through the filter cloth, and the liquid phase is discharged through the outlet pipe. The solid phase is intercepted in the drum. When the drum is filled with material, stop feeding and de liquid; Wash the filter cake while filtering out the washing solution. The centrifuge continues to rotate to spin dry the filter cake. After the filter cake meets the separation requirements, the centrifuge slows down and uses a scraper to scrape the filter cake down and discharge it from the bottom outside the machine. The centrifuge slows down again, and the pneumatic bag pulling device moves up and down to shake off the residual filter cake, achieving complete removal of the filter cake.
2. Explosion proof working principle
The explosion-proof bag pulling centrifuge is made according to explosion-proof standards and undergoes a high flow nitrogen replacement before the centrifuge host is turned on. Ensure gas inertness inside the centrifuge through oxygen content detection, pressure detection, and other means to meet the operational requirements of the centrifuge. After the equipment is in operation, dynamically monitor the oxygen content, perform high flow nitrogen replacement or low flow low-pressure nitrogen supplementation to ensure the explosion-proof operation requirements of the equipment.
3. Schematic diagram of the working process

4. Centrifuge working process

5. Nitrogen replacement and replenishment process

6. Oxygen concentration in the centrifuge chamber

7. Explosion proof process diagram of bag pulling centrifuge

8. Explosion proof on-site application diagram of bag pulling centrifuge

4、 Product technical parameters