Sealing method of compression padding with density gradient and compression padding produced according to method

A density gradient and density technology, which is applied to the sealing of the engine, engine components, mechanical equipment, etc., to achieve the effect of uniform lateral force, low production cost, and uniform overall density

Active Publication Date: 2014-11-19
NINGBO TIANSHENG SEALING PACKING +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the movement of the shaft, the looser packing on the inner side will undergo secondary compaction, and on the contrary, the denser packing on the outer end will become looser.

Method used

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  • Sealing method of compression padding with density gradient and compression padding produced according to method
  • Sealing method of compression padding with density gradient and compression padding produced according to method
  • Sealing method of compression padding with density gradient and compression padding produced according to method

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Embodiment Construction

[0019] Further illustrate the present invention below in conjunction with accompanying drawing

[0020] Referring to the attached picture:

[0021] A sealing method for compressed packing with a density gradient, comprising the following steps:

[0022] Step 1, the strip filler is placed in the forming mold according to a certain weight and size (this strip filler can be the raw material used when the original process prepares the filler),

[0023] Step 2: Compress the annular packing ring with a press, and the forming height of the packing ring can be precisely controlled by a predetermined height of the gasket stopper during pressing, so as to obtain the packing ring with the required density;

[0024] Step 3, stacking the packing rings along the stress direction, and along the force direction, the density of the packing rings increases one by one.

[0025] The compression packing produced according to the above method is characterized in that: it is composed of several pa...

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PUM

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Abstract

A sealing method of the compression padding with the density gradient comprises the first step of placing the strip-shaped padding in a forming mold according to a certain weight and a certain size, the second step of pressing the strip-shaped padding into annular padding rings through a press, wherein the forming height of the padding rings can be accurately controlled through a liner stop piece with the preset height in the pressing process so that the padding rings with the required densities can be obtained, and the third step of making the padding rings overlap in the force bearing direction, wherein the densities of the padding rings sequentially increase one by one in the force bearing direction. The invention further comprises the compression padding produced according to the method, wherein the compression padding is composed of the padding rings overlapping in the force bearing direction, and the densities of the padding rings sequentially increase one by one in the force bearing direction.

Description

technical field [0001] The invention relates to a compression packing and a sealing method thereof, which belong to the technical field of seals and can be widely used in fluid sealing occasions such as rotating shaft seals and reciprocating shaft seals. Background technique [0002] Compression packing seals are also called packing seals and gland packing seals. Its sealing structure is simple, the source of materials is wide, the installation and maintenance are convenient, and the price is low, so it is widely used in centrifugal pumps, vacuum pumps, mixers, reactors and ship propellers, etc. Motion shaft seal, and rotary seal of various valve stems, etc. [0003] The density of the compressed packing before and after installation is an important factor affecting the performance of the packing seal. The packing seal is to install the packing in the stuffing box, expand the packing in the radial direction through the gland, and then stick to the shaft surface to prevent t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/20
Inventor 励行根沈明学励洁彭旭东
Owner NINGBO TIANSHENG SEALING PACKING
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