The dry sealing system of pressure swing vacuum drying equipment is becoming more common in the industry. This technology has been developed for large gas compressors and is currently being used in pumps, blowers, fans, mixers and agitators. This type of dry sealing technology is based on the mature spiral groove theory. The test and field data give the service conditions found on the equipment. As a lubricant. The designed vacuum drying equipment must have a highly reliable working method in the environment of severe vibration and impact. It explains how to design and predict the working life of vacuum drying equipment based on the type of electronic components used and the type of vibration and shock exposure. The non-uniform part used in the book and the dynamic evaluation of the method used for the composite structure of electronic components, followed by the discussion of the method used to install electronic components and determine the stress and fatigue life of electric leads and solder joints. Because the tank body is in a vacuum state, and the rotation of the tank body makes the materials constantly turn up, down, inside and outside, it speeds up the drying speed of the materials, improves the drying efficiency and achieves the purpose of uniform drying. The double cone rotary vacuum dryer system is mainly composed of double cone rotary vacuum dryer, condenser, dust collector, vacuum pumping system, heating system, cooling system, electric control system, etc. The process of vacuum drying is to place the dried material in a sealed cylinder and heat the dried material continuously while vacuumizing with a vacuum system, so that the water in the material diffuses to the surface through pressure difference or concentration difference, and the water molecules (or other non condensable gases) obtain sufficient kinetic energy on the surface of the material, After overcoming the mutual attraction between molecules, it diffuses to the low-pressure space of the vacuum chamber and is pumped away by the vacuum pump to complete the separation from the solid. There are two forms of mixing shaft, one is the unheated rake tooth shaft, and the other is the hollow rake tooth shaft that can be filled with thermal medium. The jacket is filled with heating medium (hot water, hot oil, steam). A certain amount of wet material is added into the cylinder, and the rake gear shaft stirs the material to heat the material evenly. Under the control of the time relay, the rake gear shaft operates according to the requirements of forward rotation stop reverse rotation stop forward rotation at a certain time interval. The operation cycle is set by the user according to the process operation conditions of the material. The dried materials in the cylinder are stirred regularly by the rake gear shaft, and cycle until the materials are dried to the process requirements. A vibrating rod (determined by the drying characteristics of the material) is installed in the cylinder. The vibrating rod falls freely with the rotation of the rake gear shaft. It knocks the rake gear shaft by the self weight of the vibrating rod to vibrate the dry materials adhered to the shaft and the cylinder wall. At the same time, it has the function of crushing and accelerating the materials.