Central conveying chain with labyrinth seal

Abstract

The invention discloses a central conveying chain with labyrinth seal, comprising an end sleeve, a pin shaft, an outer chain plate, an inner chain plate and a connecting frame; the outer chain plate and the connecting frame are connected on the end sleeve; the pin shaft comprises an inner end and an outer end, wherein a diameter of the inner end is smaller than the inner diameter of the end sleeve, and the diameter of the outer end is larger than the inner diameter of the end sleeve; the inner chain plate is connected on the outer end of the pin shaft, the inner end of the pin shaft is inserted into the end sleeve, an end face of the outer end is adhered with the end face of the end sleeve; an annular groove is arranged inside the end face of the end sleeve, and a labyrinth type sealing ring is arranged inside the annular groove. By adopting the labyrinth type sealing ring, the central conveying chain has an excellent sealing effect, and effectively prevents seriously-abrasive materials such as coal ashes, slag and the like from entering between the pin shaft and the end sleeve, so as to greatly improve wear-resisting property and service life of the conveying chain; and meanwhile, the central conveying chain simplifies a structure, and is convenient to install and maintain. The central conveying chain greatly modifies the structure of an extremely traditional conveying chain product, although the modified mechanical structure is not complicated, the modified sealing effect is obviously improved; thereby the service life of the conveying chain is greatly prolonged.

Description

【Technical field】 [0001] The invention relates to the technical field of building material conveying machinery, in particular to a central conveying chain with a labyrinth seal. 【Background technique】 [0002] At present, the domestic cement industry is developing towards large-scale, energy-saving, environmental protection, and benefits. Due to the construction of large-scale production lines, it is necessary to adapt and match with large-scale and reliable conveying equipment. The specifications of the domestic supporting conveying equipment are getting larger and larger, corresponding to the conveying equipment hoist, and the requirements for the conveying chain are also getting higher and higher. [0003] Commonly used central conveyor chain structures mainly include the following types: [0004] ① Direct sales, outer chain plate steel plate positioning + hopper positioning; [0005] ②Direct sales, buckle positioning of outer chain plate + hopper positioning; [0006]...

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