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Method for removing harmful elements of braided packing

A technology of harmful elements and packing, applied in chemical instruments and methods, other chemical processes, etc., can solve problems that affect the normal operation of the sealing effect equipment, corrosion of partner parts, exceeding the standard, etc., to ensure the normal operation of the equipment, ensure safety and reliability , the effect of simple method

Active Publication Date: 2011-04-06
浙江国泰萧星密封材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of free ions such as chlorine and sulfur in the braided packing prepared by this method will often seriously exceed the standard due to the influence of auxiliary materials and other factors in the production of raw materials and product production processes, thus making Sealing products cause corrosion to the partner parts, seriously affecting the sealing effect and the normal operation of the equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A kind of braided packing harmful element removal method of this example, its method is:

[0015] a. Put the stuffing of the braided packing into the cooking container, add distilled water, heat to 100°C and keep the temperature for 5 minutes, stop heating and drain the distilled water in the cooking container, then add distilled water again, heat to 100°C and keep the temperature for 5 minutes;

[0016] b. Drain the distilled water in the cooking container, take out the filler and put it in an oven at 80°C for drying for 7 hours until the weight of moisture after drying is less than 2% of the total mass of the seasoning;

[0017] c. The filler is tested, and the products with sulfur content ≤ 500ppm and chlorine content ≤ 30ppm are qualified products for storage.

Embodiment 2

[0018] Embodiment 2: A kind of braided packing harmful element removal method of this example, its method is:

[0019] a. Put the stuffing of the braided packing into the cooking container, add distilled water, heat to 100°C and keep the temperature for 10 minutes, stop heating and drain the distilled water in the cooking container, then add distilled water again, heat to 100°C and keep the temperature for 10 minutes;

[0020] b. Drain the distilled water in the cooking container, take out the filler and put it in an oven at 70°C for drying for 8 hours until the weight of moisture after drying is less than 2% of the total mass of seasoning;

[0021] c. The filler is tested, and the products with sulfur content ≤ 500ppm and chlorine content ≤ 30ppm are qualified products for storage.

Embodiment 3

[0022] Embodiment 3: A kind of braided packing harmful element removal method of this example, its method is:

[0023] a. Put the stuffing of the braided packing into the cooking container, add distilled water, heat to 100°C and keep the temperature for 5 minutes, stop heating and drain the distilled water in the cooking container, then add distilled water again, heat to 100°C and keep the temperature for 5 minutes;

[0024] b. Drain the distilled water in the cooking container, take out the filler and put it in an oven at 75°C for drying for 7.5 hours until the weight of moisture after drying is less than 2% of the total mass of seasoning;

[0025] c. The filler is tested, and the products with sulfur content ≤ 500ppm and chlorine content ≤ 30ppm are qualified products for storage.

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PUM

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Abstract

The invention relates to a manufacturing method of a braided packing, in particular to a method for removing harmful elements of a braided packing, which mainly solves the technical problems that due to the influences of factors comprising auxiliary materials in the production process of raw materials and the production process of products, the contents of free harmful ions comprising chlorine, sulfur and the like in the braided packing frequently and seriously exceed the standard in the prior art so that coupling members are corroded by the making of sealing products, and the sealing effect and the normal running of equipment are seriously influenced, and the like. The method comprises the following steps of: placing fillers of the braided packing in a cooking container, adding distilledwater, heating and keeping the temperature, evacuating the distilled water in the cooking container after stopping heating, and then adding the distilled water again, heating and keeping the temperature; evacuating the distilled water in the cooking container, placing the taken-out fillers in an oven for drying until the water weight of the dried fillers accounts for less than 2% of the total mass of seasoning; and detecting the fillers and warehousing qualified products.

Description

technical field [0001] The invention relates to a method for manufacturing braided packing, in particular to a method for removing harmful elements from braided packing. Background technique [0002] At present, gaskets, gaskets and packings made of a single fluoroplastic (such as polytetrafluoroethylene, polyfluoroethylene propylene), asbestos rubber sheet or silicone rubber are mostly used as sealing materials. Gaskets, gaskets and packings made of asbestos rubber sheets and silicone rubber materials are randomly distributed, have strength only in certain directions, have poor creep resistance, are prone to aging, and have a short service life. A Chinese patent discloses a nano packing and its manufacturing method (authorized announcement number: CN 100341972C), which includes packing matrix materials and additives, the additives include special nano anti-wear and corrosion inhibitors, special nano anti-wear and corrosion inhibitors Accounting for 8%-46% of the total weig...

Claims

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Application Information

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IPC IPC(8): C09K3/10
Inventor 孙锦龙
Owner 浙江国泰萧星密封材料股份有限公司