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Double-floating integrated mechanical seal with large shaft diameter

A mechanical seal, double-floating technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of deformation of the seal ring, short service life, failure to achieve the sealing effect, etc., to reduce stress deformation and increase sealing performance. Effect

Inactive Publication Date: 2013-02-13
安徽亚兰密封件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of the traditional mechanical seal structure is not reasonable enough, the sealing ring is easy to deform, the sealing effect cannot be achieved, and the service life is short

Method used

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  • Double-floating integrated mechanical seal with large shaft diameter
  • Double-floating integrated mechanical seal with large shaft diameter

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Embodiment Construction

[0015] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0016] Such as figure 1 , figure 2 As shown, a large-diameter double-floating cartridge mechanical seal includes a moving ring assembly and a static ring assembly. The moving ring assembly includes a moving ring 6. The moving ring 6 is connected to the rotating shaft 13 through the sleeve 2. The sleeve 2 is connected to the rotating shaft 13. A shaft sleeve O-ring sealing ring 4 is provided between the rotating shaft 13, a moving O-ring sealing ring 5 is provided between the moving ring 6 and the shaft sleeve 2, and a shaft sleeve displacement preventing shaft sleeve is installed between one end of the shaft sleeve 2 and the rotating shaft 13. The pre-assembled positioning ring 12, the shaft sleeve 2 is connected with the rotating shaft 13 thr...

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PUM

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Abstract

The invention discloses a double-floating integrated mechanical seal with large shaft diameter, and relates to the technical field of mechanical seals. The double-floating integrated mechanical seal comprises a dynamic ring assembly and a static ring assembly, wherein the dynamic ring assembly comprises a dynamic ring which is connected with a rotary shaft by a shaft sleeve; a shaft sleeve O-shaped sealing ring is arranged between the shaft sleeve and the rotary shaft; a movable O-shaped sealing ring is arranged between the movable ring and the shaft sleeve; the static ring assembly comprises a static ring base and a static ring arranged on the static ring base; the end surface of the static ring is adhered with the end surface of the dynamic ring; a spring base is arranged on one side of the static ring base; a spring is arranged between the spring base and the static ring base; the double-floating integrated mechanical seal is characterized in that a floating O-shaped sealing ring is arranged at the bottom of the dynamic ring; a sealing cushion is arranged between the static ring and the static ring base; and waterlines are turned at the bottom of the static ring and the upper part of the static ring base, namely two planes contacting with the sealing cushion. According to the double-floating integrated mechanical seal disclosed by the invention, the floating O-shaped sealing ring is additionally arranged at the bottom of the dynamic ring, so that the sealing performance of the dynamic ring auxiliary seal is increased, and stress deformation generated by contacting can be reduced at the same time.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a double-floating cartridge-type mechanical seal with a large shaft diameter. Background technique [0002] The mechanical seal is a sealing device used to solve the leakage between the rotating shaft and the body. It is composed of at least one pair of end faces perpendicular to the rotating axis, under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal It is often used in rotary fluid machinery such as pumps, compressors, and reaction stirring tanks, and is also used for sealing parts such as gearboxes and ship stern shafts. The most commonly used structure of the mechanical seal is the end face seal. The rotating seal ring (moving ring) and the non-rotating seal ring (static ring) of the end face seal form a pair of friction pairs, whose function is to prevent medium leakage. ...

Claims

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Application Information

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IPC IPC(8): F16J15/54F16J15/16
Inventor 黄炳喜俞道善
Owner 安徽亚兰密封件股份有限公司
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