"Lao Zhang, come and help!" Master Li's shouting mixed with the sound of equipment operation came through the explosion-proof glass. In our factory assembly workshop, a chemical product packaging machine with the label XH-7 is undergoing a 72-hour endurance test before leaving the factory. This equipment, which will be shipped to the Yunnan Phosphorus Chemical Base, is packaging simulated materials at a rate of 12 bags per minute.
As an "old hand" who has been working with chemical packaging equipment for 20 years, I often tell my apprentices: "The chemical product packaging machine we make is a tailor who puts armor on dangerous goods." When the autumn tiger was raging last year, an emergency call from a pesticide factory in Shandong confirmed this statement - their original equipment had crystallization blockage when encapsulating dichlorvos. The explosion-proof packaging equipment we modified overnight not only added a self-cleaning nozzle, but also wrapped the transmission parts with Teflon coating. Now there is no problem in handling highly volatile liquids.
Speaking of the tricks of this industry, sealing and leak prevention technology is definitely the key. Last month, I went to a resin factory in Inner Mongolia for maintenance and saw that the chemical product packaging machine they bought five years ago was still in service on the production line. Director Wang patted the machine and said: "Old friend has encapsulated 8,000 tons of epoxy resin over the years, and the sealing gasket has only been replaced twice." This reminds me of the warning hanging on the wall of our R&D department - one milligram of leakage increases the danger tenfold. The new models now all come standard with a triple sealing system, which can still hold the mouth of the packaging bag tightly even if it encounters thermal expansion and contraction of 50¡æ.
For the long-standing problem of powder filling, our automatic powder filling module has finally made a difference. A while ago, a customer in Hunan reported that it always snowed "black snow" in the workshop when packaging graphite powder. The young people in the technical department spent three days on the spot and figured out a combination of spiral feeding + negative pressure dust removal. During a return visit last week, the workshop director Lao Liu rubbed his hands with joy: "Now the filling workshop can work in white coats, and the dust concentration has dropped by at least 70%."
What recently caught my eyes as an old technician is the trial operation of the new generation of corrosion-resistant production lines. The stainless steel body of the chemical product packaging machine is matte all over, which is a newly developed nano-coating process. Technician Xiao Chen demonstrated with a PH test paper: "When strong acid and alkali solutions are poured on it, it is like water drops rolling on a lotus leaf. When wiped clean, there is no mark left." This system has just been put into use in an electroplating additive enterprise in the Yangtze River Delta. It is said that even hydrofluoric acid, a "tough stubble", cannot be used with it.
Safety Section Chief Lao Zhou always says: "Chemical packaging equipment must be more reliable than a safe." Last year, the explosion-proof packaging equipment customized for a petrochemical enterprise in the northwest took three months to obtain explosion-proof certification. Now, before each chemical product packaging machine leaves the factory, it must undergo the triple test of high temperature, vibration, and static electricity in the simulation cabin. Just like the unit sent to Guangdong last month, the customer required that it could operate normally even on typhoon days, so we added a pressure balance valve to the control box.
Speaking of intelligent upgrades, the changes in the loading section are the most convincing. In the past, operators had to wear gas masks to manually stack, but now through the video recognition system, the chemical product packaging machine can automatically adjust the gripping angle. Li, the squad leader of a fertilizer plant in Henan, laughed in the feedback video: "This iron guy is much smarter than the new apprentice. He can grab a 100-jin woven bag quickly and steadily."
What made me particularly emotional was a maintenance case this spring. The first generation of equipment in a chemical plant in Northeast China 30 years ago had gear wear. The old masters dug out the yellowed drawings and restored the accessories with 3D scanning technology. When the old machine roared again, in the video sent by the workshop director, several old workers wiped tears at the equipment. This kind of technology inheritance across time and space is the meaning of our persistence in this industry.
Before leaving get off work, I saw the young men in the quality inspection team testing the newly developed vacuum replacement system. This chemical product packaging machine is specially designed to deal with chemical raw materials that are easily oxidized. It can use nitrogen to drive away oxygen at the moment of packaging. The technical director revealed that this system will soon be used in the field of lithium battery material packaging, which will set off a new round of technological innovation.
The workshop in the twilight is still brightly lit, and these chemical product packaging machines standing quietly are like soldiers waiting to go to the front line. From inflammable and explosive nitrocellulose to highly corrosive sodium hydroxide, from flying titanium dioxide to viscous asphalt modifiers, each device is building a safety line of defense with its steel body. Just like the slogan with red background and yellow characters at the gate of our factory - "Packaging is accurate to the millimeter, protecting the health of thousands of families", this may be the best annotation for chemical packaging equipment.
