PET air compressor is the main body of the air source device of the bottle blowing machine. It is a device that converts the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy. It is a special air pressure generating device for the bottle blowing machine after compressing the air. Bottle blowing air compressors are divided into: Xinran low-pressure bottle blowing machine (15-25bar), Xinran medium-pressure bottle blowing machine (25-35bar), Xinran high-pressure bottle blowing machine (35-40bar). Bottle blowing air compressors are mainly used in the supporting industry of Xinran bottle blowing machine.

Types and principles

There are many types of bottle blowing air compressors. According to the working principle, they can be divided into piston compressors, screw compressors, and centrifugal compressors. The working principle of the volumetric compressor is to compress the volume of the gas, so that the density of the gas molecules in the unit volume increases to increase the pressure of the compressed air; the working principle of the screw compressor is twin-screw compression, so that the kinetic energy of the gas in the twin-screw compressor cavity is converted into the pressure energy of the gas, thereby increasing the pressure of the compressed air. The centrifugal compressor uses the high-speed rotation of the impeller to convert the gas into gas kinetic energy under high-speed centrifugal conditions, thereby providing compressed air pressure.

Object of use

First, select the type of air compressor according to the characteristics of the air compressor. Then, according to the two parameters of working pressure and flow required by the pneumatic system, determine the output pressure pc and suction flow qc of the air compressor, and finally select the model of the air compressor.

The selection of air compressors is mainly based on the working pressure and flow of the pneumatic system.

The working pressure of the air source should be about 20% higher than the maximum working pressure in the pneumatic system, because the loss along the air supply pipeline and local loss should be considered. If the working pressure requirements in some places in the system are low, a pressure reducing valve can be used to supply air. The rated exhaust pressure of the air compressor is divided into low pressure (0.7~1.0MPa), medium pressure (1.0~10MPa), high pressure (10~100MPa) and ultra-high pressure (above 100MPa), which can be selected according to actual needs. The common use pressure is generally 0.7-1.25.

Master Kong, Wahaha, Nongfu Spring, Uni-President, Daliyuan, Coca-Cola, Pepsi, Huiyuan, Coco Tree, Red Bull, Mirinda, 7-Up, Watsons, Juneng, Wanglaoji, Robust, Lulu, Rising Sun, Daliyuan, Nestle, Suntory, Jinmailang, Huierkang, Guangming, Yili, Mengniu, Weiwei and other beverage manufacturers provide Xinran compressors for bottle blowing. Xinran bottle blowing air compressor breaks the international pattern in one fell swoop and successfully becomes the world's most trusted bottle blowing air compressor manufacturer. The world's latest technology and the most cutting-edge technology are specially designed for PET bottle blowing. The main performance indicators of the single machine and unit (screw piston series and twin-screw high-pressure air compressor) have reached or exceeded the advanced level of similar international products.

After long-term operation and testing in various occasions: higher efficiency, higher reliability (can run continuously for 24 hours without stopping), longer life, lower noise, less vibration, lower exhaust temperature, and lower fuel consumption. The authority in the industry, with more than ten years of experience in blow molding and bottle blowing machinery, and products covering more than 120 countries and regions

1) Output pressure pc of air compressor

pc=p+¡Æ¡÷p

pc: Output pressure of air compressor

p: Maximum operating pressure of pneumatic actuator

¡Æ¡÷p: Total pressure loss of pneumatic system.

Under normal circumstances, ¡Æ¡÷p=0.15~0.2MPa.

(2) Suction flow rate qc of air compressor

Without gas tank, qb=qmax

With gas tank, qb=qsa

qb: Flow rate provided by pneumatic systemqmax: Maximum gas consumption of pneumatic system

qsa: Average gas consumption of pneumatic system

Suction flow rate of air compressor, qc=kqb

qc: Suction flow rate of air compressor

k: Correction coefficient. The main factors to be considered are leakage at pneumatic components and pipe joints, estimation error of pneumatic system gas consumption, utilization of multiple pneumatic equipment at different times, and possibility of adding new pneumatic equipment. Generally, k=1.5~2.0.

(3) Power of air compressor P

p=£¨n+1£©