Material seal pump type dilute phase positive pressure pneumatic conveying is a mature technology for transporting dry bulk powders and granules. The system combines a material seal pump with a positive pressure air source to push material through a closed pipeline in a lean, fast-moving air stream. Because the material concentration is low, pipe wear is reduced and the conveyed material stays free-flowing. This design offers a simple, economical, and dust-free solution for many industrial processes.

In operation, compressed air enters the conveying line at a controlled pressure, typically between 30 and 150 kPa. The material seal pump feeds material into the pipe through a sealed chamber, preventing air backflow while allowing a continuous dose of powder to enter. The high-velocity air stream breaks up loose agglomerates and carries particles downstream. Depending on the pipeline layout, the system can convey material horizontally for several hundred meters and lift it vertically to heights of 40 meters or more. The dilute phase regime keeps the material-to-air ratio low, ensuring smooth flow and reliable transport.

Key features include low energy consumption, simple structure, and high reliability. Because the material is suspended in air, there are no mechanical conveying parts inside the pipe, which reduces maintenance costs and downtime. The sealing design of the material seal pump ensures stable conveying pressure even when handling fine powders with poor flowability. Additionally, the system can be fully automated with a PLC control unit, allowing precise adjustment of feed rate, pressure, and conveying sequence. This makes it an ideal choice for modern cement plants, power stations, and chemical factories.

The complete system usually consists of a material seal pump, screw feeder or rotary valve, roots blower or air compressor, conveying pipeline, discharge device, dust collector, and electrical control system. The material seal pump is available in several sizes to match capacity and distance. Piping includes proper bends and diversion valves to distribute material to multiple silos or process equipment. Accessories such as pressure switches, safety valves, and flow sensors ensure safe and accurate operation.

Typical applications include transporting cement, fly ash, lime, bentonite, alumina, gypsum, and other dry powders. It is also used for grains, plastic pellets, soda ash, and chemical ingredients in the food, metallurgical, and pharmaceutical industries. The system is particularly suitable for centralized feeding from one point to multiple receiving stations. Its fully enclosed operation prevents contamination and reduces environmental pollution, complying with strict workplace dust regulations.

Technical parameters vary according to project requirements. Our standard material seal pump handles capacities from 5 to 100 tons per hour, conveying distances from 20 to 500 meters, and vertical lifts up to 50 meters. Operating air pressure is from 30 to 200 kPa, with roots blower power from 11 to 132 kW. When selecting a system, consider bulk density, particle size, moisture, abrasiveness, and flowability. Our engineers provide selection calculations and recommend the most economical solution for your process.

As a reputable pneumatic conveying manufacturer, we offer complete product lines and customized services. Every material seal pump and auxiliary component is produced under strict quality control and tested before shipment. Our price is competitive and based on technical parameters such as conveying distance, capacity, piping layout, and automation level. We provide installation guidance, commissioning support, and spare parts. Contact our sales team for a prompt quotation.