旋转供料器制造精度高，具备锁气性能，也被称作旋转阀、锁气阀。其结构通常包含带多个叶片的转子，在固定机壳内转动时，上方落下的物料会填充在叶片间隙中，随着转子转动被输送至下方，核心作用是完成物料输送与输送量控制。这种设备的高精度制造工艺，使其锁气性能更为可靠。

　　The rotary feeder has high manufacturing accuracy and air locking performance, also known as rotary valve or air locking valve. Its structure usually includes a rotor with multiple blades. When it rotates inside a fixed casing, the material falling from above will fill the gap between the blades and be transported to the bottom as the rotor rotates. Its core function is to complete material transportation and control the transportation volume. The high-precision manufacturing process of this device makes its air locking performance more reliable.

　　料封泵是一种粉状物料气力输送设备，属于低压稀相输送类型，借助高速气流的引射效应输送粉状物料，在当量距离 450 米、提升高度 40 米的范围内使用效果最优。目前广泛应用于粉煤灰、氧化铝粉、干窑灰、焦粉、水泥粉料等干燥松散粉料的中短距离输送场景。

　　Material sealing pump is a type of pneumatic conveying equipment for powdered materials, belonging to the low-pressure dilute phase conveying type. It uses the injection effect of high-speed airflow to transport powdered materials, and has the best performance within an equivalent distance of 450 meters and a lifting height of 40 meters. At present, it is widely used in the medium to short distance transportation of dry and loose powder materials such as fly ash, alumina powder, dry kiln ash, coke powder, cement powder, etc.

　　下面详细对比旋转供料器与料封泵的差异：

　　Below is a detailed comparison of the differences between the rotary feeder and the sealing pump:

　　输送能力与输送距离：两者的气源通常均为罗茨风机，因此输送能力相近。旋转供料器的最佳输送距离为 45-75 米，最远可达 300 米；料封泵的输送距离约为 30-500 米。

　　Conveying capacity and conveying distance: The air source for both is usually a Roots blower, so the conveying capacity is similar. The optimal conveying distance for the rotary feeder is 45-75 meters, with a maximum distance of 300 meters; The conveying distance of the material sealing pump is about 30-500 meters.

　　工作压力：料封泵与旋转供料器一般采用罗茨风机供气，工作压力通常在 0.1 兆帕以下。

　　Working pressure: The sealing pump and rotary feeder generally use Roots blower for gas supply, and the working pressure is usually below 0.1 megapascal.

　　运行方式：两者均采用连续式运行，工作过程中进料与输送同步进行。

　　Operation mode: Both adopt continuous operation, and the feeding and conveying are synchronized during the working process.

　　输送浓度：旋转供料器属于悬浮流稀相输送，物料呈悬浮状态，基本不会造成管道堵塞；料封泵仅能进行低浓度输送，输送过程中需防止因浓度升高导致管道堵塞或料封层被吹穿。

　　Transport concentration: The rotary feeder belongs to the suspended flow dilute phase transport, and the material is in a suspended state, which basically does not cause pipeline blockage; The material sealing pump can only carry out low concentration transportation. During the transportation process, it is necessary to prevent pipeline blockage or blowing through the material sealing layer due to the increase in concentration.

　　输送速度：旋转供料器作为稀相输送设备，输送速度比料封泵稍快，对管道的磨损程度略大于料封泵，但两者差异不大。

　　Conveying speed: As a dilute phase conveying equipment, the rotating feeder has a slightly faster conveying speed than the material sealing pump, and the degree of wear on the pipeline is slightly greater than that of the material sealing pump, but the difference between the two is not significant.

　　输送管路：旋转供料器可实现多个下料口共用一根输送管；料封泵通常无法多泵共用一根管路，多为一台泵对应一根输送管，当存在多个下料口时，管路布置会更为复杂。

　　Conveyor pipeline: The rotating feeder can achieve multiple discharge ports sharing one conveyor pipeline; Material sealing pumps usually cannot share the same pipeline with multiple pumps, and often have one pump corresponding to one conveying pipeline. When there are multiple discharge ports, the pipeline layout will be more complex.

　　成本：相同输送能力的旋转供料器成本远低于料封泵。凭借多方面优势，不少场景已逐步用旋转供料器替代料封泵，行业内在气力输送系统设计中也更倾向于选择旋转供料器。

　　Cost: The cost of a rotary feeder with the same conveying capacity is much lower than that of a sealing pump. With various advantages, many scenarios have gradually replaced material sealing pumps with rotary feeders, and the industry also tends to choose rotary feeders in the design of pneumatic conveying systems.

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