rotary lobe blower roots

Rotary lobe blower roots

• Roots blower is a volumetric fan, with impeller end face and front and rear end covers of the fan.
• The principle is a rotary compressor that uses two blade-shaped rotors to move relative to each other in the cylinder to compress and transport gas.
• This type of blower has a simple structure and is easy to manufacture. It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transportation, and is more suitable for gas transportation and pressurization systems in low-pressure situations. It can also be used as a vacuum pump.

rotary lobe blower roots

Roots rotary lobe blower manual

• How to use
• Usage requirements:
  (1) The inlet air temperature is not greater than 40°C
  (2) The content of solid particles in the gas shall not be greater than 100 mg/m2, and the largest particle shall not be greater than half of the assembly gap;
  (3) The bearing temperature does not exceed 95°C;
  (4) The lubricating oil temperature does not exceed 65°C;
  (5) The opening pressure range specified on the sign shall not be exceeded.
• Preparations before startup:
  (1) Check the installation quality of each fastener and positioning pin;
  (2) Check the installation quality of intake and exhaust pipes and valves;
  (3) Check whether the base of the unit is fully padded and whether the anchor bolts are tightened;
  (4) Inject the specified brand of lubricating oil into the gear box to the driving side of the oil mark position and inject the specified grease in sufficient quantity;
  (5) Open all the blower inlet and exhaust valves, turn the rotor, and listen carefully for any abnormal noises from various parts;
  (6) For fans with water cooling requirements, the water temperature should not be higher than 25°C.
• No-load test operation of the fan:
  (1) Newly installed or overhauled fans should undergo no-load test operation;
  (2) No-load operation means putting into operation with the intake and exhaust valves fully open;
  (3) There is no abnormal smell, smoke, collision or friction sound, and the radial vibration of the bearing part is not greater than 6.3mm/s;
  (4) Run with no load for about 30 minutes. If the situation is normal, it can be put into operation with load. If abnormal operation is found, stop the machine immediately for inspection. After troubleshooting, it still needs to run with no load.
• Continuous operation under normal load:
  (1) It is required to gradually and slowly increase the voltage and bring the load up to the rated load. It is not allowed to adjust to the rated load at one time;
  (2) During normal operation of the fan, it is strictly prohibited to completely close the engine and exhaust valves; nor is it allowed to operate overloaded;
  (3) Due to the characteristics of the fan, it is not allowed to directly backflow the exhaust gas for a long time, so cooling measures must be taken;
  (4) The blower should not stop suddenly under full load to avoid damage to parts.
• Maintenance and overhaul:
  (1) Check the fastening of each part and whether the positioning pin is loose;
  (2) Check the machine body frequently for oil leakage;
  (3) Pay attention to whether the lubrication is normal, pay attention to the amount of lubricating grease, always listen to the operation of the fan to see if there is any noise, and pay attention to whether the unit is operating under specified working conditions;
  (4) Lubricating oil (grease): The lubricating oil is medium-load industrial gear oil (grade 220, kinematic viscosity 198~242mm2/s40℃, flash point ≥200℃); the grease is butter (synthetic lithium-based grease penetration 220250 , dropping point ≥190℃), after 200 hours of operation, the oil and grease must be changed for the first time, and for the second time after one month of operation. In the future, it should be replaced according to the usage environment and oil (grease) quality. It is recommended to replace it every three months;
  (5) Check the air inlet gas filter frequently and clean or replace the filter in time;
  (6) The overload of the blower is sometimes not displayed immediately, so pay attention to the increase trend of the inlet and exhaust pressure, bearing temperature and motor current to judge whether the fan is operating normally;
  (7) Before disassembling the machine, the dimensions of the machine should be measured, recorded, and marked on the parts to ensure that the original coordination requirements are maintained after assembly;
  (8) After a new machine or overhaul, the fuel tank should be cleaned and put into operation according to the usage procedures. It is recommended to replace all lubricating grease after 8 hours of operation.

rotary lobe blower roots

Roots blower manufacturers

• Since its establishment in the early 1990s, Longgu Heavy Industry has become a diversified machinery enterprise integrating fan and pneumatic conveying equipment system engineering.
• Our company has advanced computer-aided design and manufacturing, CNC machining technology, and adopts information technologies such as computer-aided design and CAPPCT to improve product design and manufacturing accuracy and shorten the design and manufacturing cycle.
• Shandong Longgu Heavy Industry Machinery Co., Ltd. has imported advanced and high-precision machining equipment from many countries, including fully automatic machining centers, CNC boring and milling machines, and dynamic balancing instruments. It has a high-level, large-scale, and modern mechanical processing and manufacturing workshop.
• The company has completed the implementation and control of its internal quality management system, achieving independent quality control of products from research and development design to finished product delivery. It has established and improved a full process self-control system from design and production to quality, installation, and service, providing sufficient basis and reliable guarantee for the stability and durability of products.
• We have cooperated with higher education institutions such as Shandong University, Shandong University of Technology, and Southwest University of Technology to strengthen the research and development of key core technologies. We have overcome technical difficulties and developed new products such as diesel engine driven Roots blowers, water-cooled dual tank Roots blowers, and low-noise Roots blowers, filling multiple industry gaps.
• At present, our company's main products include LGSR three leaf Roots blower, LGSR-V Roots vacuum pump, LGSR-H high-pressure blower series, bipolar series high-pressure, gas pressurized explosion-proof, pneumatic conveying series fans, steam compressors, LGMJ dense series fans, rotary fans, centrifugal fans, etc.
• Our company's products are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, grain processing, electricity, petrochemicals, cement, mining, and special gas pressurized conveying.
• We have close cooperative relationships with top domestic enterprises such as Sande Group, COFCO Group, and Shanshui Cement. Our company's sales outlets and after-sales service centers are located throughout the country and exported to countries such as Malaysia, India, Kyrgyzstan, Nigeria, etc.

Roots blower uses

• ‌Roots blowers‌ are widely used in many industries and fields, mainly including:
• ‌Sewage treatment‌: In the sewage treatment industry, roots style blowers are widely used in aeration, stirring, mixing and other aspects to ensure the smooth progress of the sewage treatment process.
• ‌Pneumatic conveying system‌: roots style blowers are used to transport feed, lime powder, monosodium glutamate, soybean skin, silica and other powdery materials, as well as grain suction machines or crane suction vacuum pumps in grain transportation to ensure the effectiveness of materials transmission.
• ‌Aquaculture‌: In aquaculture, roots style blowers use micropore aeration technology to oxygenate water quality and improve breeding efficiency.They are important equipment in the aquaculture industry.
• ‌Coal chemical industry‌: In the coal chemical industry, Roots blowers are used in sewage treatment and different processes, playing an important role in improving production efficiency and product quality‌.
• ‌Dust removal industry‌: Roots blowers are also used in the dust removal industry, such as desulfurization, denitrification, dust removal, etc., to ensure the effective treatment of industrial flue gas and waste gas.
• ‌Grain processing, flour mills, food factories‌: used in transportation, drying, cooling, dust and other links to ensure the smooth progress of the food processing process‌.
• ‌Paint and Coating Industry‌: Used for ventilation, dust removal and waste gas treatment to ensure the safety and health of the working environment.
• ‌Mining, quarrying, and mineral processing industries‌: used in emissions, exhaust, gas transportation, drying and other links to ensure environmental control and safety during the development of mineral resources‌.
• ‌Pharmaceutical Industry‌: In the pharmaceutical industry, Roots blowers are used in pharmaceutical processing, chemical reactions and other aspects, such as laboratory ventilation equipment, to ensure the safety and efficiency of the pharmaceutical production process‌.