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Cartridge mechanical sealing structure

A mechanical seal, cartridge technology, applied in mechanical equipment, variable displacement pump components, machines/engines, etc., can solve the problems of guaranteed seal installation quality, inconvenient installation, etc., to achieve reliable performance, convenient installation and maintenance, Use the effect of low maintenance cost

Inactive Publication Date: 2015-03-25
CHANGZHOU GREAT CAR LIGHT
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AI Technical Summary

Problems solved by technology

[0002] Most of the current standard forms of mechanical seals for several types of pumps in my country are "separate" structures, that is, the dynamic and static rings of the seal, the shaft sleeves related to the installation, and the end cover of the sealing chamber are each integrated, and they are assembled in the installation. At the same time, this separate structure is not only inconvenient to install, but also requires maintenance personnel to have certain installation experience and skilled operation skills. Even so, the installation quality of the seal may not be guaranteed

Method used

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  • Cartridge mechanical sealing structure

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Embodiment Construction

[0010] Such as figure 1 The shown cartridge mechanical seal structure includes a shaft sleeve 1, a moving ring 2, a static ring 3, a spring 4, a snap ring 5, a lip seal 6 and a limit block 7, and the shaft sleeve 1 passes through The fastening screw is connected to the shaft, the bushing 1 is connected with the moving ring 2 by interference fit, the static ring 3 is connected to the static ring seat, the static ring seat is connected to the gland, and the inside of the gland is A spring clamping groove is provided, the spring 4 is placed in the spring groove, the static ring seat is connected with the spring 4 and positioned by the snap ring 5, and the flushing liquid inlet 8 and the cooling A liquid inlet 9, a lip seal 6 is arranged between the spring 4 and the gland, and a limit block 7 is arranged at the end of the gland. The lip seal 6 is a fluorine rubber sealing ring.

[0011] When in use, you only need to clean the whole device, clean the sealing chamber and the shaft...

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Abstract

The invention discloses a cartridge mechanical sealing structure which comprises a shaft sleeve, a movable ring, a static ring, a spring, a clamping ring, a lip sealing element and a limiting block. The shaft sleeve is connected to a shaft through a fastening screw. The shaft sleeve is connected with the movable ring in an interference-fit mode. The static ring is connected with a static ring base. The static ring base is connected with a gland. A spring clamping groove is formed inside the gland. The spring is placed inside the spring clamping groove. The static ring base and the spring are connected in a matched mode and are positioned by the clamping ring. A flushing fluid inlet and a cooling fluid inlet are formed inside the gland. The lip sealing element is arranged between the spring and the gland. The limiting block is arranged at the end of the gland. The cartridge mechanical sealing structure is simple and novel in structure, reliable in performance and convenient to install and maintain, and the using and maintenance cost is low even though the initial investment is high.

Description

technical field [0001] The invention relates to the field of fastening and sealing structures, in particular to a cartridge type mechanical sealing structure. Background technique [0002] Most of the current standard forms of mechanical seals for several types of pumps in my country are "separate" structures, that is, the dynamic and static rings of the seal, the shaft sleeves related to the installation, and the end cover of the sealing chamber are each integrated, and they are assembled in the installation. At the same time, this separate structure is not only inconvenient to install, but also requires maintenance personnel to have certain installation experience and skilled operation skills. Even so, the installation quality of the seal may not be guaranteed. From the statistical data of the use of pump mechanical seals in my country's petroleum, chemical and other industries, about 38% of mechanical seal failures are caused by improper installation. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/00
Inventor 孙红艳
Owner CHANGZHOU GREAT CAR LIGHT
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