旋轉供料器的正確選型是確保氣力輸送系統有效運轉的關鍵。選型應從廣義和狹義兩個層面進行考量。廣義選型是指旋轉供料器結構形式的選擇，需根據物料的性質（包括名稱、堆積密度、粒徑、粘附性等）、輸送量以及作用在旋轉供料器上的操作壓力來決定。物料的堆積密度對選型影響顯著——當物料充氣后堆積密度大幅減小時，要求供料器的容積要大得多才能通過同樣重量的物料。狹義選型則是指具體型號性能規(guī)格的確定。

The correct selection of rotary feeders is the key to ensuring the effective operation of pneumatic conveying systems. Selection should be considered from both broad and narrow perspectives. Generalized selection refers to the selection of the structural form of the rotary feeder, which needs to be determined based on the properties of the material (including name, bulk density, particle size, adhesion, etc.), conveying capacity, and operating pressure acting on the rotary feeder. The bulk density of materials has a significant impact on selection - when the bulk density of materials decreases significantly after inflation, the volume of the feeder is required to be much larger to pass the same weight of materials. Narrowly defined selection refers to the determination of specific model performance specifications.

在輸送量計算方面，旋轉供料器的理論輸送量可按以下公式計算：理論輸送量（m?/h）= 轉子容積（L/r）× 轉子轉速（rpm）× 填充系數。轉子轉速一般控制在10-25r/min范圍內。在低轉速時，旋轉供料器的排出量與轉子轉速成線性正比關系；當轉速超過一定限度后，物料排出量反而會下降，這主要是因為葉輪轉速過快時物料來不及充分填充格室。因此，在選配過程中應注意：旋轉供料器供料目標產能應略大于實際產能；轉速不宜過高，一般控制在30-50r/min以內。若作為系統選型，還需確定輸送距離等系統參數。

In terms of conveying capacity calculation, the theoretical conveying capacity of the rotary feeder can be calculated according to the following formula: theoretical conveying capacity (m?/h)=rotor volume (L/r) × rotor speed (rpm) × filling coefficient. The rotor speed is generally controlled within the range of 10-25r/min. At low speeds, the discharge volume of the rotary feeder is linearly proportional to the rotor speed; When the speed exceeds a certain limit, the amount of material discharged will actually decrease, mainly because when the impeller speed is too fast, the material cannot fully fill the compartment. Therefore, during the selection process, it should be noted that the target production capacity of the rotary feeder should be slightly greater than the actual production capacity; The speed should not be too high, generally controlled within 30-50r/min. If used as a system selection, it is also necessary to determine system parameters such as conveying distance.

在維護管理方面，旋轉供料器的密封性能是需要核心關注的內容。其密封結構多樣，包括采用帶副唇旋轉油封和特殊填料密封結構。運行中應定期檢查轉子與機殼之間的間隙是否正常，密封件是否老化或磨損，驅動裝置是否運轉平穩(wěn)。若用于輸送磨損性較強的物料，應選用耐磨型轉子或加裝耐磨襯套。對于輸送粘附性物料的場合，需注意清理葉片和殼體內壁的積料，防止堵塞。旋轉供料器的選擇是否合適，直接影響氣力輸送系統是否能夠有效運轉，因此在系統設計和設備采購中應給予充分重視。

In terms of maintenance and management, the sealing performance of the rotary feeder is a key concern. Its sealing structure is diverse, including the use of a rotating oil seal with a secondary lip and a special packing sealing structure. During operation, it is necessary to regularly check whether the gap between the rotor and the casing is normal, whether the sealing components are aging or worn, and whether the driving device is running smoothly. If used for conveying materials with strong wear resistance, wear-resistant rotors or wear-resistant bushings should be selected. For conveying adhesive materials, attention should be paid to cleaning the accumulated material on the blades and the inner wall of the shell to prevent blockage. The selection of a rotary feeder directly affects the effective operation of the pneumatic conveying system, so it should be given sufficient attention in system design and equipment procurement.

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