Q1: What is the core working principle of a tubular centrifuge? What separation modes can it achieve?
A: A tubular centrifuge generates a strong centrifugal force field through the high-speed rotation of a slender drum, and realizes component stratification and separation based on the density difference of different substances in the material. It supports two core separation modes. The first is liquid-solid separation, which removes submicron solid impurities, cell debris, fine sediments and other tiny particles from liquid materials. The second is liquid-liquid separation, which separates two immiscible liquids with density differences. It is widely applied in fine clarification, purification and refining processes.
Q2: What are the differences between GQ type and GF type tubular centrifuges and how to select the right model?
A: The two models are designed for completely different application scenarios, and the selection depends on actual separation requirements. TheGQ type is a clarification model, mainly used for liquid-solid separation, suitable for impurity removal and clarification of pharmaceutical liquids, beverages and chemical solutions. The GF type is a separation model, specialized in liquid-liquid separation and also capable of mild liquid-liquid-solid three-phase separation, ideal for oil-water separation and solvent layered purification. In addition, materials such as 316L stainless steel and titanium alloy can be selected according to material corrosion resistance.
Q3: What is the separation accuracy and processing capacity of a tubular centrifuge? What are its applicable scenarios?
A: As a high-precision separation device, a tubular centrifuge can capture fine particles as small as 0.1 μm with a maximum separation factor of 40,000×g, delivering far better clarification effect than ordinary centrifuges. The conventional single-machine processing capacity ranges from 0.1 to 5 m³/h. Limited by the drum volume, it is not suitable for large-flow rough filtration. It is more applicable to biopharmaceuticals, fine chemicals, food and beverage, laboratory pilot tests, high-end purification and other scenarios requiring low flow rate and high precision.
Q4: What causes excessive vibration and noise during equipment operation and how to solve it?
A: This is one of the most common equipment faults, mainly caused by dynamic balance imbalance and improper installation or operation. Typical causes include uneven slag deposition in the drum, unstable material ratio, unlevel equipment placement, loose fasteners and over-speed operation. Solutions: stop the machine to clean residual sediments on the inner drum wall, calibrate the equipment level, tighten all body fasteners, operate strictly in accordance with the rated speed on the nameplate, and follow the principle of slow speed-up and slow speed-down to avoid mechanical impact.
Q5: What are the main reasons for poor separation effect and substandard clarification degree?
A: The problem is mainly caused by three factors: parameter setting, material status and operation mode. First, excessive feeding speed leads to incomplete centrifugal stratification before material discharge, reducing the separation effect. Second, insufficient material pretreatment results in high solid content and large particle impurities, causing rapid drum blockage and deposition. Third, insufficient rotating speed and operation time fail to generate enough centrifugal force to separate fine impurities. Fourth, the material density difference is too low (less than 0.01g/cm³) to support effective stratification. Corresponding solutions include reducing feeding flow rate, conducting pre-filtration and impurity removal in advance, matching the rated rotating speed, and verifying material physical parameters.
Q6: Can tubular centrifuges support aseptic production and meet GMP certification requirements?
A: Yes. Custom sanitary tubular centrifuges adopt 316L sanitary stainless steel and dead-angle-free structural design. They support CIP online cleaning and SIP online sterilization, and operate in a fully closed state to effectively avoid secondary material pollution. The equipment fully complies with GMP production standards for pharmaceutical, health product and high-end food industries, and is suitable for purification and separation of aseptic liquid materials.
Q7: What is the daily maintenance cycle and routine maintenance items of the equipment?
A: Daily maintenance follows the principle of "post-batch cleaning and regular inspection". After each production batch, the drum, feeding nozzles and pipelines must be disassembled and cleaned to remove residual materials and sediments and prevent material deterioration and blockage. After 2000 hours of cumulative operation, inspect the wear of bearings and the tightness of seals, and replace aging accessories in a timely manner. For long-term shutdown, drain all residual liquid, dry the equipment surface, and conduct rust and dust prevention treatment to ensure dynamic balance and stable operation.
Q8: What are the core differences between tubular centrifuges and disc centrifuges and how to choose?
A: The core differences lie in separation accuracy and processing capacity. Tubular centrifuges feature greater centrifugal force and higher separation accuracy, capable of removing submicron fine impurities, making them suitable for high-precision purification and low-flow production. The disadvantages are low single-machine throughput and regular shutdown for slag cleaning. Disc centrifuges support large-flow continuous operation and are suitable for large-volume rough separation, but their clarification effect on fine particles is inferior to tubular centrifuges. Choose tubular centrifuges for high-precision refining and disc centrifuges for large-flow rough separation.
Q9: How to troubleshoot and handle material leakage and seepage problems?
A: Leakage faults mostly occur in sealing parts and pipeline connections. First, check whether the body sealing rings are aging, damaged or incorrectly installed. Second, inspect whether the inlet and outlet pipeline joints are loose or the gaskets fail. Meanwhile, confirm whether the feeding pressure exceeds the equipment rated pressure range. Handling methods: replace aging sealing accessories, fasten pipeline joints, and adjust feeding pressure and flow rate to avoid leakage caused by high-pressure impact.
Q10: Why cannot tubular centrifuges run continuously for a long time? What is the core limiting factor?
A: Restricted by the structural principle, the drum of a tubular centrifuge has extremely limited solid-phase storage space. During operation, solid impurities continuously deposit on the inner drum wall. Excessive deposition will damage the dynamic balance of the drum, causing excessive vibration, abnormal noise and even equipment damage. Therefore, the equipment operates intermittently and requires regular shutdown for drum disassembly and slag cleaning. It can be restarted only after cleaning and balance calibration, and cannot support 24-hour uninterrupted continuous production.