?? 亚洲久久天堂,在线观看91视频,黄色片免费的

欧美中文字幕-麻豆入口-在线观看一级片-国语对白对话在线观看-久久久性-91伊人网-免费在线观看黄色片-国产一级二级视频-在线中文字幕观看-91官网在线观看-成人亚洲精品777777ww-色中文-av看片资源-亚洲最大成人在线-懂色av一区二区三区蜜臀-20日本xxxxxxxxx46-诱夫1v1高h-国产精品久久久久久久久免费相片-av一级免费-少妇姐姐

Back to top

首頁 ? Use of communication ? Selection steps for Roots fans

Selection steps for Roots fans

 

  • List of conditions and requirements
  1. Uses: The location and role of the blower in the process, distinguishing blower uses from vacuum uses.
  2. Gas properties: Name. Molecular weight, toxicity, corrosiveness and explosiveness, composition ratio of the gas mixture, dust content, etc.
  3. Operating parameters: inlet temperature, inlet pressure, boost (exhaust pressure or vacuum), flow rate, and permissible limits for exhaust temperature and noise.
  4. Environmental conditions: place of installation (outdoors or indoors, on the ground or on a floor), local atmospheric pressure, temperature and humidity, etc.
  5. Common conditions: water supply, power supply (including supply voltage), etc.
  6. Others: 1) Variable operating conditions: pressure or flow rate adjustment requirements: 2) Operating conditions: continuous operation time, or intermittent operation frequency; 3) Requirements for painting (including color), packaging, and transportation.
  • Selection Calculation
  1. According to the use requirements, selected blower material and sealing type, preliminary selection of product models and specifications.
  2. Accounting for the performance parameters of the preliminary product under the specified operating conditions, including flow rate, shaft power and exhaust temperature.
  3. After selecting the blower model and specifications, determine the prime mover (motor) and transmission method, and select supporting accessories.
  • Make a selection list
  1. Blower: 1) Model: caliber, material and sealing form, etc.; 2) Performance parameters: flow rate, pressure rise (or vacuum height), rotational speed and shaft power, etc.
  2. Motor: voltage, power, number of poles (or speed), protection class and insulation class, etc.
  3. Transmission method: direct connection, belt connection (whether anti-static belt), or other transmission methods.
  4. Matching accessories: mufflers, filters, elastic joints, safety valves, check valves, acoustic enclosures, model specifications for starter cabinets, etc.

 

13755181118