In the field of industrial compressed air, centrifugal compressors and integrated screw air compressors have very different application scenarios due to the essential differences in their working principles. As a
ZAKF Screw Air Compressor manufacturer with an annual output value of about 500 million yuan and a production base of 60,000 square meters, an in-depth understanding of the technical differences between the two will help provide customers with more accurate and customized solutions. The following is an analysis of the differences in principle, scenarios and advantages of ZAKF factory.
First, the core working principle: the essential difference between the technology of dynamic compression and volumetric compression.
1. Centrifugal Compressor: “Kinetic Drive” Mode of Speed Energy Conversion
Centrifugal compressors rely on the centrifugal force generated by the high-speed rotation of the impeller to achieve gas compression:
Workflow: the gas enters the center of the impeller from the inlet, and is thrown out along the radial direction of the blades by the high-speed rotating impeller (linear velocity 200-300m/s), and then enters the diffuser after the speed is increased to 100-200m/s, and the kinetic energy is converted into pressure energy through the expansion of the flow channel (single-stage pressure ratio 1.3-2.0). When multi-stage impellers are connected in series, the overall pressure ratio can reach more than 4.0, which is suitable for large flow rate (>500m³/min), medium and high pressure (0.6-5.0MPa) scenarios, such as air separation plant, petrochemical cracking process.
Technical shortcomings: small flow conditions (<100m³/min) prone to “wheezing”, and high requirements for gas cleanliness, dust content of more than 50mg/m³ when the impeller wear is significant, high maintenance costs.
One-piece screw compressor realizes compression through the volume change between the teeth of Yin and Yang rotor meshing:
Workflow: When the male rotor (convex teeth) and the female rotor (concave teeth) rotate, the volume between the teeth first increases to absorb the gas, and then shrinks with the meshing to squeeze the gas (the compression ratio is determined by the rotor profile, usually 5-10), and most of the models are injected with lubricating oil for sealing and cooling, which is finally discharged through the oil separator (pressure 0.3-1.6MPa).
ZAKF Technical Advantage: As a screw air compressor manufacturer, ZAKF's inverter model can realize 40%-100% load regulation, and performs flexibly in small and medium flow rate (10-500m³/min) scenarios, which is especially suitable for fluctuating load conditions, such as intermittent air consumption in factories, and air supply for small projects.
ZAKF screw air compressor manufacturer's customization ability and factory advantages
1. Scenario-based program design: precise adaptation based on the difference of principles.
Large flow rate and stable load scenario: ZAKF can provide “centrifugal main engine + screw machine backup” combination solution for the needs of sewage treatment aeration and coal powder conveying in power plant, etc. ZAKF can utilize the production capacity advantage of 60,000m2 production base to ensure the debugging and fast delivery of equipment compatibility.
For small and medium flow fluctuation scenarios, such as instrument air in electronic workshop and vacuum system for food packaging, ZAKF's integrated screw compressor supports customized rotor profiles (e.g., asymmetric tooth shape) and matches the pressure range of 0.3-1.6MPa. ZAKF also provides localized services through 3 independent overseas operating companies, with a response speed 30% faster than the average in the industry.
2. Scale production and speedy delivery capability
Production capacity support: ZAKF's annual output value is about 500 million yuan, with a monthly production capacity of 2,500 air compressors and 2,000 after-treatment equipment, and digital production lines that can meet the centralized purchasing and customization needs of the chemical and food industries.
Logistics advantage: Relying on 7 warehousing bases, KKF can realize 15-day shipment in Southeast Asia/Middle East, which is 40% shorter than the traditional supply chain cycle, and ensures that urgent orders can be delivered quickly.
3. Global after-sales and technical support system
ZAKF has set up after-sales centers in many places around the world, combined with intelligent monitoring system to provide remote troubleshooting (response time ≤ 2 hours). Compared with the complex maintenance system of centrifugal compressors, ZAKF equipment operation and maintenance costs are reduced by 50%, which is especially suitable for small and medium-sized enterprises in need of equipment reliability and easy maintenance.
Third, the working principle of the difference driven by the industry application differentiation
1. Centrifugal compressor applicable scenarios
flow>500m³/min and stable load scenarios, such as large-scale power plant blast furnace blast, petrochemical raw material gas compression, at this time centrifugal multi-stage compression design can be maintained at isothermal efficiency of more than 85%, but the initial investment than the screw type is higher than the 40%-60%. 2. ZAKF screw compressor core advantage areas 10-500m³/min small flow scenarios, such as manufacturing pneumatic tools, pharmaceutical clean room supply.
2. ZAKF screw compressor core advantage areas
10-500m³/min small and medium flow rate scenarios, such as manufacturing pneumatic tools, pharmaceutical clean room air supply. ZAKF inverter model at 40% load still maintains more than 80% efficiency, with the after-treatment equipment (monthly production of 2,000 units) can be adapted to the dusty, wet and other complex working conditions.
Fourth, ZAKF factory strength: from technical knowledge to delivery of the whole chain of protection.
Based on the 60,000 square meters production base, ZAKF transforms the knowledge of principles into customization capability:
In large flow scenarios, ZAKF screw compressors can be used as the peak adjustment supplement of centrifugal equipment, and the modularized design can reduce the initial investment.
In small and medium flow scenarios, ZAKF can provide customers with “high efficiency + economic” solutions by virtue of the customization of rotor profiles, oil-free technology (e.g., FDA-approved models), and the ability of 15-day speedy shipment.
As a manufacturer specializing in screw air compressors, ZAKF has always taken “Principle Understanding + Capacity Support + Global Service” as its core competence. Whether you need a synergistic solution between centrifugal and screw type, or customized service for single screw equipment, we will provide you with full-cycle service from demand analysis to after-sales maintenance, supported by our 60,000m2 production base, 7 warehousing networks and overseas operating companies. For technical solutions based on working conditions, welcome to contact ZAKF team, let professional design and large-scale production to help you upgrade your efficiency.
