There is a piston in the vacuum dispensing bottle, when there is an object in the bottle, press the pump head and squeeze out the contents, the piston will go up. When the contents of the bottle are used up, the piston will run all the way to the top of the pump head, at this time you can remove the pump head and reinstall it, or use a hard object to top the piston to the bottom, you can use it again.
Vacuum bottle is a kind of container that can make other isolated from outside temperature, and also a kind of container that can isolate external bacteria. The vacuum flask uses the contraction force of a spring to prevent outside air from entering the flask, and uses atmospheric pressure to push the piston at the bottom of the flask to operate.
The contents of the vacuum bottle can be completely isolated from the outside world, thus preventing the product from being oxidized by exposure to air, which can breed bacteria and destroy the substance in the bottle. It should be noted that although the vacuum bottle can be used repeatedly, it needs to be cleaned or disinfected regularly. Long-term disassembly and replacement will also lead to the loosening of the piston or pump head, which will easily enter the air and breed bacteria.
When the vacuum bottle is in use, press and hold the top, the bottom piston will run up and squeeze the contents out. When the contents of the bottle run out, the piston will go to the top. When the piston tops to the bottom, it is time to disassemble the vacuum bottle. The pump head and other parts can be used again and again by removing and reinstalling them.
The vacuum bottle uses the contraction force of the spring to prevent outside air from entering the vacuum bottle. The atmospheric pressure is used to push the piston at the bottom of the bottle forward. The contents of the vacuum bottle can be completely isolated from the air, avoiding oxidation and deterioration of the product due to contact with air and breeding bacteria, and upgrading the product grade with its high-tech concept.
The common vacuum bottle on the market consists of a cylindrical container with an ellipsoidal shape and a piston placed at the bottom. Its design principle is to use the contraction force of the spring, and not to let the air into the bottle, resulting in a vacuum state, and the use of atmospheric pressure to push the piston at the bottom of the bottle forward. But because of the spring force and atmospheric pressure can not give enough force.
Therefore, the piston cannot fit too tightly with the wall of the bottle, otherwise the piston will not be able to rise and move forward due to excessive resistance; on the contrary, if the piston is easy to move forward and easy to leak, so the vacuum bottle has very high requirements for the professionalism of the manufacturer.