旋轉供料器又稱(chēng)星形加料器、旋轉閥、鎖氣器或星型下料器，是氣力輸送系統中用于均勻、連續供料的關(guān)鍵設備。其核心結構包括帶有數個(gè)葉片的轉子、圓筒形機殼、端蓋、密封件以及由電機和減速器組成的驅動(dòng)裝置。轉子通常裝有6至10個(gè)葉片，將機殼內空間分隔為相應數量的格室。物料從上部料斗靠自重落入轉子葉片間的空格（格室）中，隨著(zhù)轉子在電機驅動(dòng)下勻速旋轉，被攜帶的物料運動(dòng)至下部的出料口，依靠重力或系統壓力卸出。這一過(guò)程實(shí)現了物料的連續、定量、均勻輸送。

Rotary feeder, also known as star feeder, rotary valve, air lock or star feeder, is a key equipment used for uniform and continuous feeding in pneumatic conveying systems. Its core structure includes a rotor with several blades, a cylindrical casing, end caps, seals, and a driving device composed of a motor and a reducer. The rotor is usually equipped with 6 to 10 blades, dividing the space inside the casing into a corresponding number of compartments. The material falls into the space (compartment) between the rotor blades by its own weight from the upper hopper. As the rotor rotates at a constant speed under the drive of the motor, the carried material moves to the lower discharge port and is discharged by gravity or system pressure. This process achieves continuous, quantitative, and uniform transportation of materials.

旋轉供料器具有定量供料和鎖氣的雙重功能。其“鎖氣”作用體現在：轉子與機殼之間的間隙出彩小，能夠有效防止系統內外氣體的串通，保持氣力輸送系統的壓力穩定。機體側面常設有均壓排氣口，可將葉輪回轉帶來(lái)的高壓氣體從此排走，減少氣體頂料現象，有利于物料的順利下落。根據轉子葉片的結構形式，旋轉供料器主要分為D型和B型兩種：D型葉片兩端開(kāi)放式，適宜輸送粉狀物料；B型葉片兩端封閉式，適宜輸送粒狀、球狀物料。

The rotary feeder has a dual function of quantitative feeding and gas locking. Its "gas locking" function is reflected in the extremely small gap between the rotor and the casing, which can effectively prevent the collusion of gases inside and outside the system, and maintain the pressure stability of the pneumatic conveying system. There is a permanent pressure equalization exhaust port on the side of the body, which can discharge the high-pressure gas brought by the impeller rotation, reduce the phenomenon of gas topping, and facilitate the smooth falling of materials. According to the structural form of the rotor blades, rotary feeders are mainly divided into two types: D-type and B-type: D-type blades with open ends are suitable for conveying powdered materials; The B-type blade is closed at both ends and suitable for conveying granular and spherical materials.

機體殼體也可根據設計分為粉料型、顆粒型、耐磨型和耐壓型等不同類(lèi)型。顆粒型進(jìn)口處設置V形結構，適用于粒料和彈性顆粒的輸送；耐磨型轉子設有可補償的活動(dòng)葉片或耐磨鑲條；耐壓型端面采取特殊密封結構，葉輪與機殼間隙出彩小，適用于高壓工況。對于高壓工況，還可在端蓋與轉軸之間設計帶充氣密封口的充氣密封圈。旋轉供料器體積小、結構簡(jiǎn)單、運轉維修方便，廣泛應用于環(huán)保、冶金、化工、糧食、水泥、電力等行業(yè)的氣力輸送與除塵系統中。

The body shell can also be divided into different types according to design, such as powder type, particle type, wear-resistant type, and pressure resistant type. V-shaped structure is installed at the inlet of granular material, suitable for conveying granular and elastic particles; The wear-resistant rotor is equipped with compensatory movable blades or wear-resistant inserts; The pressure resistant end face adopts a special sealing structure, and the clearance between the impeller and the casing is extremely small, suitable for high-pressure working conditions. For high-pressure conditions, an inflatable sealing ring with an inflatable sealing port can also be designed between the end cap and the shaft. The rotary feeder has a small volume, simple structure, and easy operation and maintenance, and is widely used in pneumatic conveying and dust removal systems in industries such as environmental protection, metallurgy, chemical industry, grain, cement, and electricity.

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