BRUSH SEAL DEVICE

摘要

The present invention is to provide a brush seal device capable of following displacement in a radial direction of a rotational shaft appropriately. The brush seal device prevents leakage of process fluid, wear of a brush seal etc., and leakage of process fluid from an outer circumferential side. The brush seal device 100 of the present invention integrally includes an inner circumferential brush seal 120 and an outer circumferential brush seal 140. The inner circumferential brush seal 120 has a brush portion 123 and an inner-circumferential-side free end portion 125 at the inner circumferential side. The outer circumferential brush seal 140 has a brush portion 143 and an outer-circumferential-side free end portion 145 at the outer circumferential side.

主权项

1. A brush seal device having a brush portion in which a plurality of bristles are arranged and sealing in an axial direction between a housing and a rotational shaft, the brush seal device comprising:
an inner circumferential brush seal; an outer circumferential brush seal; and a connection part, wherein said inner circumferential brush seal comprises: an inner-circumferential-side brush portion in which a plurality of bristles are arranged from the connection part to an inner circumferential direction; and an inner-circumferential-side free end portion which is an inner-circumferential-side end portion of the inner-circumferential-side brush portion and is arranged opposite to an outer circumferential surface of the rotational shaft so as to contact or be adjacent to the outer circumferential surface, and said outer circumferential brush seal comprises: an outer-circumferential-side brush portion in which a plurality of bristles are arranged from the connection part to an outer circumferential direction; and an outer-circumferential-side free end portion which is an outer-circumferential-side end portion of the outer-circumferential-side brush portion and is arranged opposite to an inner circumferential surface of the housing so as to contact or be adjacent to the inner circumferential surface.