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| The Coal mill pull rod lower seal core ZGM113K- is a key component in the pull rod sealing device of the coal mill. Its main function is to prevent the coal powder and dust inside the coal mill from leaking into the external environment through the gap between the pull rod and the casing, and to prevent the outside air from entering the coal mill to ensure the normal operation and sealing effect of the coal mill. The following is a detailed introduction to the lower sealing core of the pull rod for coal mill: Structure and function 1. Sealing core: The Coal mill pull rod lower seal core ZGM113K- is usually a semi-circular ring structure, connected into a complete ring by a combination of bolts, and installed between the pull rod and the lower sealing seat. The function of the sealing core is to form a sealing layer to prevent the leakage of coal powder and dust. 2. Wear-resistant ring: The wear-resistant ring is installed between the sealing core and the pull rod, and the sliding sleeve is arranged on the outer peripheral side of the pull rod. The wear-resistant ring is usually made of wear-resistant materials such as carbon fiber, which can reduce wear during the movement of the pull rod and extend the service life of the sealing core. 3. Spring-pressing assembly: The spring-pressing assembly includes a spring and a pressing plate, which is installed between the wear-resistant ring and the sealing core. The function of the spring-pressing assembly is to support and supplement the gap after the wear of the wear-resistant ring to ensure the sealing effect. When the pull rod moves along its own radial direction, the spring-pressing assembly can automatically adjust to compensate for the gap after wear and prevent the sealing performance from decreasing. Working principle 1. Sealing effect: The sealing core under the pull rod forms a double sealing structure through the combination of the sealing core, the wear-resistant ring and the spring-pressing assembly. The sealing core and the wear-resistant ring fit tightly on the surface of the pull rod to prevent coal powder and dust from leaking. The spring-pressing assembly automatically compensates for the gap after wear to ensure the sealing effect. 2. Motion compensation: During operation, the pull rod not only moves in the up and down direction, but also shakes in the horizontal direction. The spring-pressing assembly can be flexibly adjusted to ensure that the sealing core and the wear-resistant ring always maintain a good sealing effect during the movement of the pull rod. |
| Technical parameters of coal mill Heat generation: 1631MJ/kg Surface moisture:< 18% Grindability system: HGI=4080 Combustible volatile matter: 1640% Raw coal particles: 040mm Fineness of coal powder: R90=240% |
| Product Features: 1. Reliability: Adopting high-quality bearing support and replaceable stationary wear rings. 2. Efficiency: The dual suction design improves suction efficiency. 3. Flexibility: Suitable for various industrial and municipal fields. 4. Stability: Maintain a high degree of sealing during operation, without leakage. 5. Maintainability: replaceable stationary wear rings and well-designed lubrication system. |
| Application: Thermal power plants: Coal mills are used to grind coal into powder for better combustion and power generation. Steel plant: Coal mills are used for the preparation of coal powder, helping to improve combustion efficiency. Cement plant: Coal mills are used for the preparation of coal powder to ensure the smooth progress of cement production. In the field of coal chemical industry, medium speed coal mills can be used in coal to oil, coal to fertilizer, coal to natural gas and other process flows to provide qualified coal powder. |
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