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Front cover sealing device of vacuum pump

A sealing device and vacuum pump technology, applied in the sealing device of piston pump, pump components, machine/engine, etc., can solve the problems of oil seal damage, oil leakage of oil cup, oil seal wear, etc., to achieve small leakage, stable sealing state, The effect of long maintenance cycle

Inactive Publication Date: 2016-07-13
HAIMEN HAIZHEN VACUUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the installation is not in place during the assembly process, or the oil seal is damaged, the oil in the oil cup will be consumed quickly
After the pump has been running for a period of time, the oil seal will be worn out and the oil cup will leak oil

Method used

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  • Front cover sealing device of vacuum pump
  • Front cover sealing device of vacuum pump

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Experimental program
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Effect test

Embodiment Construction

[0012] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0013] like figure 1 and 2 As shown, a front cover sealing device of a vacuum pump includes a front cover 1 and a shaft 2. A mechanical seal static ring 3 is radially installed on the outer end of the shaft 2. The mechanical seal static ring 3 is composed of a static ring gland 31 (stainless steel) and The static ring friction block 32 (silicon carbide) is composed. The static ring friction block 32 is located on the inner side of the static ring gland 31 and is in contact with the shaft 2. An O-ring 5 is provided at the joint of the static ring gland 31 and the front cover 1. A mechanical seal moving ring 4 is installed on the inner side of the mechanical seal static ring 3 along the radial direction of the shaft 2. The mechanical seal moving ri...

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Abstract

The invention discloses a front cover sealing device of a vacuum pump.The front cover sealing device comprises a front cover and a shaft.A mechanical seal stationary ring is installed at the outer end of the shaft in the radial direction and composed of a stationary ring gland and a stationary ring friction block.The stationary ring friction block is located on the inner side of the stationary ring gland and makes contact with the shaft.A mechanical seal moving ring is installed on the inner side of the mechanical seal stationary ring in the radial direction of the shaft and comprises a moving ring frame and a moving ring friction block.One end of the moving ring friction block makes contact with the stationary ring friction block, and the other end of the moving ring friction block is connected with the moving ring frame through a spring.An O-shaped sealing ring is arranged between the moving ring friction block and the shaft.The mechanical seal stationary ring and the mechanical seal moving ring keep being attached and slide relatively.The front cover additionally provided with the sealing device is stable in sealing state, small in leaking quantity and long in maintenance cycle, the end face can realize automatic compensation after abrasion, and generally frequent repair is not needed.

Description

technical field [0001] The invention relates to the technical field of vacuum pumps, in particular to a front cover sealing device of a vacuum pump. Background technique [0002] The front cover of the traditional Roots vacuum pump is sealed with a double-channel skeleton oil seal. This sealing form requires an additional oil cup to lubricate it, and it needs to be cooled by cooling water. Once in the assembly process, if the installation is not in place, or the oil seal is damaged, the oil in the oil cup will be quickly lost. After the pump runs for a period of time, the oil seal will be worn out and the oil cup will leak oil. SUMMARY OF THE INVENTION [0003] In order to solve the above technical problems, the present invention provides a front cover sealing device of a vacuum pump, which eliminates the need for a water cooling device, does not need to install a shaft sleeve and an oil cup, and also has a simple and lightweight front cover structure. [0004] The prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C27/00
CPCF04C27/00F04C27/009
Inventor 陈敬华
Owner HAIMEN HAIZHEN VACUUM EQUIP
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