Air Compressor Accessories Industrial air compressors, as important power equipment in modern industrial production, have a crucial impact on the performance and safe operation of the entire production system. Among the numerous accessories of air compressors, the pressure switch, as a key automatic control component, undertakes the important task of monitoring and regulating the system pressure. It can automatically control the start and stop of the compressor according to the changes in the air pressure within the system. Let's take an in-depth look at the specific applications of pressure switches in different industrial scenarios.
Machinery Manufacturing Industry
In the manufacturing field, pressure switches are widely used in various automated production lines and pneumatic tool systems. For example, in the painting workshop of an automobile manufacturing plant, the pressure switch ensures the stable working pressure of the spray gun and the uniform quality of the coating; on the electronic product assembly line, it controls the torque accuracy of the pneumatic screwdriver and improves product consistency. The manufacturing industry usually requires pressure switches to have high repeatability accuracy and fast response characteristics.
Food and Beverage Industry
The production process of food and beverages has extremely high requirements for hygiene and air quality. Compressed air is commonly used in the food and beverage industry for material transportation, filling, cleaning, and other links. In the air compressor system, the pressure switch can ensure that the pressure of the compressed air is stable and meets the production requirements. Take beverage filling as an example. Precise air pressure control is crucial for ensuring the accurate quantification and filling quality of beverage filling. If the air pressure is unstable, there may be insufficient or excessive filling, which affects product quality and production efficiency. The pressure switch monitors the air pressure in real time and timely controls the working status of the compressor, so that the filling equipment is always in the optimal working air pressure environment. In addition, in the food packaging link, when using compressed air for vacuum packaging, stable air pressure can ensure the sealing of the packaging and extend the shelf life of food. The pressure switch plays a key guarantee role in this process.
Construction Industry
The construction industry is another important application field. Pressure switches play a key role in large construction machinery such as shield machines and concrete pump trucks. Compressors working in harsh environments such as plateaus or extremely cold conditions need to be equipped with pressure switches of special materials and sealing structures to ensure reliable operation. In the construction project of an international airport, the air compression system using explosion-proof pressure switches successfully overcame the challenges of the construction environment with high humidity and much dust.
Production Line-level Scenarios: Deep Coupling with Processes
1. Automobile Welding Line: The robotic welding torch requires a stable air source of 6 bar. The pressure switch is installed at the end of the workshop loop pipe. When the pressure drop caused by the peak shift production is < 5.5 bar, the switch triggers the start of the standby compressor to avoid false welding defects.
2. Food and Beverage Filling Machine: The PET bottle blowing process requires the dew point of compressed air to be < -40 °C and oil-free. The pressure switch body is made of 316L stainless steel, and the diaphragm is EPDM, meeting FDA 21 CFR 177.2600. When the pressure is lower than 4.5 bar, it stops immediately to prevent preform scrapping.
3. PCB Surface Mounting: The SMT placement machine uses 0.7 MPa nitrogen to assist in placement. A miniature pressure switch is configured at the outlet of the nitrogen generator. When the nitrogen pressure fluctuation > ±0.05 MPa, an alarm is given to avoid batch false welding.
As a key component of industrial air compressors, the performance of the pressure switch directly affects the reliability, safety, and energy efficiency level of the entire compressed air system. By analyzing application cases in different industries, this article confirms the important value of high-quality pressure switches in ensuring production safety, improving product quality, and reducing operating costs. With technological progress and the diversification of application requirements, pressure switches will continue to develop in the direction of intelligence, high precision, and greenness.
