The purpose is to provide a vacuum pumping device for vacuum vessels and to develop rotary vane vacuum pumps for application in sealed vessels. Why vacuum in a sealed container? Sealed containers are widely used in all aspects of life and are usually used in this type of high-sealed storage conditions for drinks, spices, seasonings, etc. Storage in sealed containers is minimized which is spoiled in contact with the external environment. Existing containers are not only designed to hold liquids or solids, but also need to be sealed to facilitate transportation, portability and storage to meet requirements. The purpose of use is to overcome the shortcomings of the existing technology, with rotary vane vacuum pump to provide a good sealing effect, easy to open and close the container.
In today’s sealed beverage container class, in addition to the usual use of red wine corks, the usual beverage corks, serrated caps, corks, cork silicone, are also smeared with seal mud at the joints of subsequent corks and bottle mouths to further ensure the seal.
Rotary vane vacuum pumps can be extracted in the sealed container, dry gas, if received a gas ballast attached device, can be inhaled condensate gas. But it is not suitable for high oxygen extraction, a corrosive action on metals, and the pump oil react and containing dust particles in the gas.
Rotary vane vacuum pump is one of the most basic vacuum technologies in vacuum equipment. Rotary vane vacuum pump is a multistage pump. Rotary vane vacuum pump with single – stage and two – stage. The so-called two-stage, that is, the structure will be two single-stage pump connection. Double stage, high vacuum can be obtained.
Vacuum devices are more difficult to seal than pressure devices. It can promote the internal pressure seal, while in the rotary vane pump seal, the friction fit depends on the main elastic element loading, the compensation ring auxiliary sealing material must be selected to achieve good elasticity in order to achieve the sealing.
The application of rotary vacuum pump in airtight container solves the problem that the food plastic bag can’t be disinfected, can’t be reused, the heat preservation is not good, better guarantee the food hygiene and safety, and greatly reduce the pollution and waste of resources and environment. In addition, the device has the advantage of being simple in structure and easy to manufacture, and improves the overall user experience, solving the problems of sealing mud in contact with the external environment, easy damage, deformation and dissolution.