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Large-sized internal supercharging shaft sealing device

A technology of internal pressurization and shaft sealing, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., and can solve the problems of poor packing elasticity, small elastic compensation margin, and leakage of sealing medium gaps, etc.

Inactive Publication Date: 2015-04-29
马鞍山市荣亿密封材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In actual operation, due to the poor elasticity of the packing, the elastic compensation margin is small. At the same time, the rotating shaft is in contact with the packing, and the shaft and the packing are rubbed against each other. The wear creates a gap, so the sealed medium leaks along the gap between the shaft and the packing. , affecting the safe and effective operation of equipment

Method used

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  • Large-sized internal supercharging shaft sealing device

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Embodiment Construction

[0011] Referring to the accompanying drawings, a large-size internal supercharging shaft sealing device is installed with an M-type expansion seal 1 at the sealing part of the 6 ends of the rotating shaft. Part 1 is made of elastic material. M-shaped expansion seal 1 and U-shaped sealing sheath 2 are equipped with threaded air inlet pipe 3 on the side wall, and the threaded air inlet pipe 3 is connected with a compressed air source. There is a pressure plate 4, which is fixed and installed between the pressure plate 4 and the frame by bolts 5; the mating surface 7 between the M-type expansion seal 1 and the rotating shaft 6 is wavy, and the M-type expansion seal 1 is a tubular structure, and the material is according to The physical and chemical performance parameters of the sealed medium are determined, and the threaded inlet pipe is bonded and fixed with the M-type expansion seal.

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Abstract

The invention discloses a large-sized internal supercharging shaft sealing device. An M type expansion sealing part is installed at an end sealing position of a rotary shaft; a U type sealing protection bush sleeves the M type expansion sealing part; the M type expansion sealing part is made of elastic materials; threaded air inlet pipes are installed on lateral walls of the M type expansion sealing part and the U type sealing protection bush; a compressed air source is communicated with the exterior of the threaded air inlet pipes; a press plate is arranged at the external end of the U type sealing protection bush in a pressing mode. The large-sized internal supercharging shaft sealing device thoroughly solves leakage caused by abrasion due to eccentricity of the shaft, is particularly suitable to a large-sized shaft, wide in applicable range, simple in installation and free of maintenance and achieves low cost and high efficiency.

Description

technical field [0001] The invention relates to the field of shaft member seals, in particular to a large-size inner booster shaft seal device. Background technique [0002] Large size (over 2000 mm in diameter) shaft seal is a difficult problem in the machinery manufacturing industry, and it is also a priority product in my country's 2011 new industrial policy. The sealing method currently used is packing type. The packing type seal is mainly filled and pressed in the groove outside the rotating shaft through the packing. The groove is processed first, and the gland is pressed tightly, and the packing is pressed through the gland, and the compressed packing produces radial deformation. , to achieve the purpose of holding the rotating shaft tightly, thereby preventing the medium from leaking along the shaft. [0003] In actual operation, due to the poor elasticity of the packing, the elastic compensation margin is small. At the same time, the rotating shaft is in co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/52
CPCF16J15/52
Inventor 祁博渊仝庆
Owner 马鞍山市荣亿密封材料有限责任公司