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Packing Seal Round Port Rotary Valve

Packing Seal Round Port Rotary Valve

Packing seal type round mouth rotary valve is a rotary feeding device designed for continuous conveying and unloading applications of dry bulk materials such as powders and particles. Its sealing structure adopts packing seal technology to effectively prevent material leakage and gas backflow, and is suitable for positive pressure, negative pressure or micro-pressure conveying systems. The inlet and outlet of the rotary valve adopt a standard round mouth structure, which is convenient for docking with various circular silos, pipelines, and pneumatic conveying systems, and is easy to install and maintain.
Features: Shaft end seals made of wear-resistant materials (such as polytetrafluoroethylene, nylon, polyurethane, graphite composite materials, etc.) are installed at both ends (shaft ends) of the rotor blades. Advantages: The sealing performance is significantly improved compared to the basic type, and it can withstand a certain pressure difference (usually <0.1 MPa). The structure is relatively simple and the cost is moderate.

Disadvantages: The end plate is a wearing part and needs to be replaced regularly. The sealing effect will decrease under high pressure difference or highly abrasive materials. Not suitable for extreme working conditions with temperature or chemical corrosion.

Application: The most commonly used type, suitable for most low and medium pressure difference (such as dust collector unloading, low pressure pneumatic conveying feeding/discharging, vacuum feeder discharging, etc.), non-high temperature, non-strongly corrosive material occasions.

About Us
Changzhou Jinkui Machinery Manufacturing Co.,Ltd.
Changzhou Jinkui Machinery Manufacturing Co.,Ltd.

Changzhou Jinkui Machinery Manufacturing Co., Ltd. specializes in the production of rotary valves, blowers, blowers, star unloaders, unloading equipment, ash unloading valves, closed blowers, dust removal equipment accessories, unloader manufacturers, rotary valve manufacturers, metal Materials, quick cleaning valves, reducers, dust removal equipment accessories and other environmental protection equipment products; products are widely used in petrochemical, electric power, environmental protection, food, pharmaceuticals, metallurgy, construction and other industry equipment, are an important part of dry dust removal equipment, especially It is suitable for the feeding and unloading of solid particles, powder particles, and ultra-fine powders in pneumatic conveying and pipe network positive and negative pressure conditions. The company is located in Changzhou City, the economically developed Yangtze River Delta, with beautiful scenery and convenient transportation. Provide customers with high-quality products and high-quality services, and sincerely work with you to move forward, cooperate with integrity, and create a better future!

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In industrial production, dust characteristics vary vastly—from lightweight, adhesive food powders to high-temperature, highly corrosive chemical materials—posing significant challenges to the adaptability of dust collection systems and their components. Recently, ZZ Precision Engineering, specializing in specialty component manufacturing, emphasized that deeply customized rotary valves can effectively address these complex and diverse conditions.

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Recently, a domestic manufacturer of dust collection equipment components announced the successful development of a new-generation rotary valve equipped with high-performance wear-resistant ceramic liners. This product addresses the industry challenge of traditional metal rotary valves experiencing rapid wear and short service life when handling highly abrasive dust, such as mineral powder and fly ash.

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An anti-interference and anti-clogging rotary valve

Rotary valves are specialized equipment used in powder conveying systems for unloading, metering, dust removal, quantitative conveying, mixing, and packaging. They are widely applied in various industries such as chemical, environmental protection, petroleum, metallurgy, refractory materials, power, cement, plastics, food, and pharmaceuticals. A common defect of conventional rotary sealing valves is that when a large amount of material enters the valve body, it can become blocked in the material chamber of the rotor, leading to the blockage of the entire rotary sealing valve and damaging a significant amount of material. Therefore, an anti-jamming structure is generally installed at the inlet of the rotary sealing valve. In the existing "anti-interference mechanism for rotary valve material conveying", two pairs of upper and lower feeding baffles are installed, which restrict and guide the material through them. However, when the rotor rotates, the material falls from the lower feeding baffle. If the baffle in the rotor chamber is just below the material at this time, the material will collide with the baffle, causing damage to the material. Additionally, for particles with high elasticity, the material may be ejected in various directions due to the collision. Therefore, it is necessary to design an anti-interference and anti-jamming rotary valve to solve the above technical problems.

An anti-interference and anti-clogging rotary valve Sep 15 , 2025
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