pneumatic conveying system supplier

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.
The company adheres to the business philosophy of "product quality as the lifeblood of the enterprise", the work attitude of "being down-to-earth and doing things seriously", and the brand awareness of "self inspection by everyone and specialized quality inspection".
We strive to create products with excellent performance and smooth operation, and dedicate ourselves to our customers.
We sincerely hope to cooperate with you sincerely and create a beautiful chapter together!

‌‌Lean phase conveying

The definition and basic principles of dilute phase transport
‌Dilute phase conveying‌ is a pneumatic conveying method. When the velocity of the fluidized medium is relatively large, solid particles begin to be brought out. As the velocity of the fluidized medium increases, more particles are entrained, the void ratio increases, and the pressure drop decreases. The solid particles form a suspended dilute phase in the fluid and are entrained out of the fluidized bed together with the fluid. This process is called dilute phase transport. Dilute phase conveying is mainly used in the traditional method of conveying alumina materials. The system mainly consists of a pressure pump and a conveying pipeline. The conveying distance is generally about 400 meters.
‌Applications and Characteristics of Dilute Phase Conveying‌
Dilute phase conveying is mainly used to convey powdery materials, the powder content is lower than 1-10kg/m³, and the air flow speed is high, usually between 18-30m/s. The conveying distance of dilute phase conveying is generally within 300 meters, which is suitable for medium and short distance material conveying. The process flow of the dilute phase conveying system is relatively simple. The main equipment includes air source Roots blower, low-pressure conveying pump, etc. The system configuration requirements are lower and the maintenance cost is also lower.
‌Comparison between dilute phase transportation and dense phase transportation‌
Compared with dense phase conveying, dilute phase conveying has lower powder content, higher air flow velocity and shorter conveying distance. Dense phase conveying uses higher air pressure for pressure conveying, with a high solid-to-gas ratio and a longer conveying distance, up to 1,000 meters. The dilute phase conveying system is suitable for short-distance and small-batch material transportation, while dense-phase conveying is more suitable for long-distance and large-volume material transportation.