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Environmental protection type flexible graphite packing for recovery

A flexible graphite, environmentally friendly technology, applied in fibrous fillers, inorganic pigment treatment, chemical instruments and methods, etc., can solve problems such as density failure, high dimensional accuracy, fracture, etc., and achieve excellent sealing performance, wide range of requirements, and material selection requirements low effect

Inactive Publication Date: 2005-01-26
杨久新 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The structure of the flexible graphite packing molding ring currently used is: the flexible graphite strip is wound around the shaft, compressed in the axial direction in the mold cavity, and the cross section of the molding surface is corrugated and bonded to each other. This product requires high dimensional accuracy and is manufactured The raw material must be made of graphite sheet, and the requirements for raw materials are relatively strict. The biggest disadvantage is: if the expansion rate of the inner and outer diameters exceeds 3% during use, it will break and cause density failure; The price is expensive, and the internal corrugated structure shows obvious anisotropic characteristics, which is not conducive to the sealing filling of the stuffing box

Method used

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Examples

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Embodiment Construction

[0006] The sealing packing of the present invention is used in various stuffing boxes. It is the disordered graphite scrap made by crushing and shearing various discarded flexible graphite plate scraps and discarded flexible graphite fillers, and processing them into density 1.2-1.9g / cm 3 Preformed graphite filler or graphite packing wire (add cotton yarn or glass fiber or carbon fiber filament).

[0007] Calculate the weight according to the volume of the finished product, weigh a single piece with a balance, and control the molding volume density at 1.2-1.9g / cm 3 Within the range, appropriate amount of glass fiber, carbon fiber, cotton yarn or phenolic resin can also be added in the ingredients according to requirements.

[0008] The density of graphite scrap made from waste is 0.09-1.50g / cm 3 , The size range of crushed powder is: length ≤ 6mm, width ≤ 0.8mm, height ≤ 0.35mm. The density of each batch of graphite scrap is ≥1.4g / cm 3 Particles cannot exceed 30%, ≤0.5g / cm...

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Abstract

Disclosed is an environmental protection type flexible graphite packing for recovery characterized in that, subjecting the leftover bits and pieces of reclaimed flexible graphite plate material or less qualified filling product to compression, shearing and disintegration, producing graphite granulate, and compression moulding.

Description

technical field [0001] The invention relates to a graphite filler, in particular to a flexible graphite filler with an isotropic composition of flexible graphite pellets and a high expansion rate. Background technique [0002] The structure of the flexible graphite packing molding ring currently used is: the flexible graphite strip is wound around the shaft, compressed in the axial direction in the mold cavity, and the cross section of the molding surface is corrugated and bonded to each other. This product requires high dimensional accuracy and is manufactured The raw material must be made of graphite sheet, and the requirements for raw materials are relatively strict. The biggest disadvantage is: if the expansion rate of the inner and outer diameters exceeds 3% during use, it will break and cause density failure; The price is expensive, and the internal corrugated structure shows obvious anisotropic characteristics, which is not conducive to...

Claims

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Application Information

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IPC IPC(8): C09C1/46C09C3/00
Inventor 杨久新杨诗怡
Owner 杨久新
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