The following by the vacuum pump unit manufacturers to introduce the vacuum pump unit design steps, with the continuous development of vacuum equipment, the emergence of a variety of new vacuum units, these models are designed in detail according to the needs of users. The design conditions for the vacuum pump unit should meet the original intention of the design, and the design step should also be professional detailed planning, to ensure the normal use of the design work.
Design conditions of vacuum pump sets known parameters of vacuum chamber: volume of vacuum chamber; Surface area of venting; Air leakage of vacuum chamber; Operating vacuum; Ultimate vacuum; Pre-pumping time and pumping time to reach the ultimate vacuum, etc. Gas source in vacuum chamber: atmosphere in vacuum chamber; Vacuum chamber surface vent; Leakage in the dynamic seal and static seal of the vacuum chamber; Shell permeating gas; The gas emitted by the treated material; The gas required for the process to be introduced. Special requirements for vacuum chamber: whether dust, metal spillage, corrosive gas, water vapor are generated during the process; Does the vacuum chamber require no oil, no vibration, etc.
Design steps of vacuum pump unit calculation of total discharge volume in vacuum chamber; Determine the effective pumping rate of the vacuum chamber; Coarse main pump and coarse pre vacuum pump; According to the requirements to select valves, traps, dust collector and other vacuum components; Draw the assembly sketch of the vacuum system and determine the size of each part. Confirm (check) calculate the parameters of the vacuum pump, if the coarse vacuum pump can not meet the requirements, the need to re-select the pump and pump, until the parameters meet the requirements; Draw assembly drawing of vacuum system; Draw part drawing and construction drawing.
The vacuum pump unit must be designed according to the specific design conditions for planning, so as to meet the requirements of users, in the selection of materials to consider the quality of good and low cost of metal, production in strict accordance with the drawings for construction, so that the products produced will be welcomed.
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