In the blow molding industry, the correct selection of screw air compressors is crucial, as it directly affects production efficiency and product quality.
First, the gas demand must be clear. The flow rate must be accurately calculated, that is, the amount of gas discharged per unit time by the rotary air compressor at a specified exhaust pressure (converted to the intake state), and the commonly used unit is cubic meters per minute (m³/min). For example, if the blow molding machine requires 5m³ of compressed air per minute, the selected screw air compressor flow rate must be slightly greater than this value to cope with possible gas fluctuations. In the blow molding process, the commonly used pressure range is generally between 0.7 and 1.25MPa, which is similar to the pressure range of low-pressure air compressors and is suitable for light applications and some simpler working scenarios. However, the specific pressure setting should be adjusted according to different blow molding equipment and product requirements to ensure that specific production needs are met. For example, for blowing large plastic containers, the pressure demand may be higher.
Then look at the type of air compressor. Piston air compressors are suitable for low-power demand scenarios due to their simple structure and convenient maintenance, but the gas production stability is slightly insufficient. Screw air compressors are stable and efficient, and are ideal for medium-power scenarios. They are widely used in the blow molding industry. Centrifugal air compressors are small in size and low in noise, and are suitable for high power requirements, but the initial investment cost is high.
In the blow molding industry, air compressors are the core power source, and their stable operation is directly related to the continuity of production and the quality of products. When selecting, in addition to considering basic parameters such as flow and pressure, there are many key points that should not be underestimated.
1. Equipment stability
The blow molding process requires that the compressed air supply must be stable and continuous, which highlights the importance of air compressor stability. OPPAIR screw air compressors have become a popular choice in the blow molding industry due to their excellent stable working characteristics. The working principle of OPPAIR PM VSD screw air compressors is based on a pair of intermeshing spiral rotors. During operation, the gas is compressed and transported evenly and smoothly.
2. Maintenance cost
During the long-term use of air compressors, maintenance costs are an expense that cannot be ignored. Simple and convenient maintenance operations and low maintenance costs can effectively reduce the operating burden of enterprises. Although the piston air compressor has a relatively simple structure and is easy to understand and operate, its internal parts are extremely easy to wear in high-speed reciprocating motion. Key parts such as piston rings and connecting rods need to be replaced every once in a while, which not only increases the frequency of maintenance, but also makes the maintenance cost high. In sharp contrast, OPPAIR rotary screw air compressors have a compact and reasonable internal structure design, less wear between parts, and longer service life. In general, the maintenance cycle of helical screw compressor is 2-3 times that of piston air compressors, which greatly reduces maintenance costs and time costs.
3.Energy saving
With the enhancement of environmental awareness and the improvement of corporate cost control needs, energy-saving denair compressor have gradually become the mainstream choice in the market. OPPAIR variable frequency screw air compressor can minimize energy consumption while ensuring compressed air output by adopting efficient compression technology, optimized motor design and intelligent control system. A high energy efficiency rotary screw air pressure machine can save 30%-50% of electricity bills each year compared to ordinary screw air compressors. This is undoubtedly a considerable cost saving for blow molding companies that run air compressors for a long time.
4. Brand and after-sales service
Choosing a well-known brand of screw air compressor means choosing a higher quality guarantee. OPPAIR has invested heavily in technology research and development and production processes, and has advanced production equipment and a strict quality inspection system to ensure that every air compressor shipped is stable, reliable and durable. At the same time, high-quality after-sales service is also an important manifestation of OPPAIR’s strength. When the equipment fails, OPPAIR’s professional after-sales team can respond quickly and give a response plan in the first time, which greatly shortens the maintenance time of the equipment and reduces the economic losses caused by downtime.
In summary, when selecting rotary screw air compressors in the blow molding industry, only by comprehensively considering equipment stability, maintenance costs, brand and after-sales, energy saving and other factors, and closely combining the actual production needs of the company itself, can the most suitable choice be made to provide strong guarantees for the efficient and stable operation of blow molding production.
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Post time: Mar-29-2025
