At two o'clock in the morning last Wednesday, when I was staring at the 37th edition of the solenoid valve test data, the fluorescent tubes in the laboratory suddenly flashed-which reminded me of the late night that changed the industry three years ago. At that time, an engineer from a pharmaceutical company in Guangdong called urgently: "Can you make a filling valve that controls 0.1ml accuracy? The equipment we are using now always has a 5% dosage error in the eye drop bottle." It was this call that gave birth to the micro solenoid valve technology that our factory is proud of today.
In the field of micro filling packaging machines, solenoid valves are like conductors of symphony orchestras. The pneumatic valves used in traditional equipment are like a conductor holding a drumstick - powerful enough but not delicate enough. The micro solenoid valves we developed are more like a wrist holding a baton, which can complete the opening and closing action within 0.03 seconds. When I went to a cosmetics factory in Suzhou to debug the equipment last month, the workshop director looked at the filling head accurately applying the essence and blurted out: "Isn't this valve with eyes?"
To talk about the secret of this millimeter-level control element, we have to start with our "sandwich structure". The cavity of an ordinary solenoid valve is a straight-cylinder design. Our engineers got inspiration from the high-speed rail brake system and changed the flow channel to a laminated honeycomb shape. This not only allows the viscous emulsion to pass smoothly, but also avoids the common wall residue problem in the industry. I remember when the first batch of samples were made, Lao Li from the R&D department held a magnifying glass and looked at it for a long time, and finally blurted out: "This is not a valve, it is clearly a miniature water cube!"
On the production line of a pharmaceutical company in Ningbo, our micro-filling packaging machine is creating a new record. In the past, when filling vaccine adjuvants, there were always invisible bubbles mixed in. Now, through intelligent pulse control technology, the solenoid valve can automatically slow down the moment the liquid medicine touches the bottle mouth. Wang, the team leader in charge of quality inspection, told me that the pass rate of each batch of their products is now two percentage points higher than when using imported equipment.
What makes me particularly proud is the adaptive ability of this fluid control system. Last week, when I was renovating equipment for an essential oil company in Yunnan, I encountered a tricky situation on site - the viscosity of the rose essential oil they newly purchased was abnormal. If it were traditional equipment, it would have to stop the machine to adjust the parameters. After our intelligent control system automatically identifies the fluid characteristics, the micro solenoid valve can control the filling accuracy within the range of ±0.05g as if it can read minds. The customer took a video on the spot and sent it to Moments: "This is a packaging machine that can think!"
My colleagues often ask me: "Is such a small valve durable?" We have done extreme tests: let the solenoid valve open and close at high frequency for 72 hours continuously, and the filling head can still be as accurate as a Swiss watch. The solenoid valve modules of the high-precision packaging equipment currently shipped are all designed with dual redundancy. Even if an emergency occurs, the backup system can take over in the blink of an eye.
Standing in front of the viewing window of the workshop, watching the newly launched micro-filling packaging machine undergoing final inspection, the filling head dances a precise mechanical ballet between the glass bottles. If you are also looking for a solution that can fill perfume without wasting a drop of essential oil, and can dispense eye drops while controlling the dosage of each drop, welcome to our factory to see these small valves with black technology - although they are only the size of a fingernail, they can pry the entire future of precision manufacturing.
