External drive type sealing element

Abstract

The invention discloses an external drive type sealing element. The external drive type sealing element comprises a hard ring body, an inner side ring body, a connecting ring body, a sealing ring bodyand an external adjusting mechanism; the outer end of an external driving rod on one side of the hard ring body is rotated, so that a poking head at the inner end of the external driving rod rotationally abuts against a poking block at the upper end of the interior of an arc-shaped poking groove of a driving ring, and meanwhile the outer end of the external driving rod on the other side of the hard ring body is reversely rotated, the poking head at the inner end of the external driving rod is far away from the poking block at the upper end of the interior of the arc-shaped poking groove, so that a space is reserved for rotation of the driving ring, and the whole driving ring is driven to rotate at the inner end of a positioning rod in a clamped mode by abutting against the poking head ofthe external driving rod on one side of the rotating hard ring body; when the poking head at the inner end of the external driving rod on the other side of the hard ring body makes contact with the poking block at the upper end in the arc-shaped poking groove again, adjustment is completed, external adjustment is achieved through rotation of the two external driving rods, and adjustment is quite convenient at any time.

Description

technical field [0001] The invention relates to an outboard actuated seal. Background technique [0002] Most of the sealing rings are made of soft materials such as rubber, and the sealing force is mainly provided by the elasticity of the material itself to achieve the sealing effect. The sealing ring of this structure is widely used in various industries because of its convenient manufacture and low cost. However, after the sealing ring is in contact with the rotating shaft for a long time, the sealing ring will be deformed and the contact will not be firm. In addition, this kind of sealing ring is generally manufactured to fit a certain size, and the diameter of the seal cannot be fine-tuned. The scope of application is limited, so the present invention needs to provide an externally driven seal with reliable abutment, good sealing performance, and fine-tuning of the abutment diameter. Contents of the invention [0003] Aiming at the shortcomings of the above-mentione...

AI Technical Summary

Problems solved by technology

However, after the sealing ring is in contact with the rotating shaft for a long time, the sealing ring will be deformed and the contact will not be firm. In addition, this kind of sealing ring is generally manufactured to fit a certain size, and the diameter of the seal cannot be fine-tuned. The scope of application is limited, so the present invention needs to provide an externally driven seal with reliable abutment, good sealing performance, and fine-tuning of the abutment diameter

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