Analysis on the future development of eyewash

The eyewash is a necessary equipment for safety and labor protection. It is a necessary emergency and protection facility for occasions where it is exposed to toxic and corrosive substances such as acids, alkalis, and organics. When the eyes or body of the on-site operators come into contact with toxic, harmful and corrosive chemicals, the eyewash device can be used for emergency flushing or showering of the eyes and body with these devices, mainly to prevent the chemicals from causing further harm to the human body. As a kind of emergency ambulance, more and more attention is paid. However, since it can also be used in winter, anti-freeze eyewashes have also come into being.
Among the antifreeze eyewashes, the automatic emptying methods are currently sold. In the automatic emptying antifreeze eyewashes, according to the depth of the frozen soil in winter, they are divided into above-ground automatic emptying antifreeze eyewashes and underground automatic Drain the antifreeze eyewash.

The antifreeze eyewash has also undergone three developments. The antifreeze eyewash is divided into two concepts: the broad sense and the narrow sense. The broad sense of the antifreeze eyewash is to empty the water in the eyewash or to prevent the water in the eyewash from freezing. Including above-ground automatic emptying antifreeze eyewash, underground automatic emptying antifreeze eyewash, electric heat tracing eyewash and electric heating eyewash. The antifreeze eyewash in a narrow sense is to empty the water in the eyewash. Including above-ground automatic emptying antifreeze eyewash, underground automatic emptying antifreeze eyewash. We will only discuss the anti-freeze eyewash in the narrow sense below.
The antifreeze eyewash that first appeared on the market uses a large foot pedal to control the water intake and drainage of the eyewash, but it is troublesome in operation. When using the eyewash, you must first open the main water inlet valve before using the eyewash; after using the eyewash, you must first close the main water inlet valve and then close the on-off valve related to the eyewash. In this case, it is very It is easy to cause the user’s misoperation. If the user first closes the on-off valve of the eyewash, and then closes the main valve, the water in the eyewash cannot be drained, and the purpose of emptying the eyewash to prevent freezing will not be achieved. Compared with the first-generation anti-freeze eyewash, the second-generation automatic emptying anti-freeze eyewash has a great improvement. This eyewash uses a special three-way ball valve to control water inflow and drainage, reducing the first-generation anti-freeze eyewash The procedure for opening the main valve of the device is the same as using the eyewash device. However, the antifreeze ball valve used in the second-generation automatic emptying antifreeze eyewash can not completely drain the water in the eyewash, and the inner wall of the spool of the antifreeze ball valve will freeze. After multiple uses, the antifreeze ball valve Will be damaged. At the same time, the eyewash is directly discharged on the ground when emptying the accumulated water inside, causing environmental pollution.

The third-generation automatic emptying antifreeze eyewash adopts an antifreeze valve built-in method, and the antifreeze valve is installed inside the eyewash pipe. When using the eyewash, the antifreeze valve is closed under the action of water pressure; after using the eyewash, the water in the eyewash is automatically emptied, and the emptied water still passes through the eyewash The drain will not cause environmental pollution. The use of the eyewash is the same as the ordinary eyewash.
With the development of science and technology, in the near future, a series of breakthrough developments in the eyewash may continue.