CN1056561A - Expanded graphite and teflon braided composite packing material - Google Patents
Expanded graphite and teflon braided composite packing material Download PDFInfo
- Publication number
- CN1056561A CN1056561A CN 91106349 CN91106349A CN1056561A CN 1056561 A CN1056561 A CN 1056561A CN 91106349 CN91106349 CN 91106349 CN 91106349 A CN91106349 A CN 91106349A CN 1056561 A CN1056561 A CN 1056561A
- Authority
- CN
- China
- Prior art keywords
- braiding
- expanded graphite
- sheet material
- packing material
- flexible graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000010439 graphite Substances 0.000 title claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 title claims abstract description 15
- 238000012856 packing Methods 0.000 title claims abstract description 15
- 239000004809 Teflon Substances 0.000 title claims description 6
- 229920006362 Teflon® Polymers 0.000 title claims description 6
- 239000002131 composite material Substances 0.000 title description 11
- 238000009954 braiding Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 6
- 239000010425 asbestos Substances 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
Images
Landscapes
- Sealing Material Composition (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a kind of novel braided packing, it is to make the braiding bundle by flexible graphite sheet material and teflin tape with special production technology, forms through braiding, dipping, shaping again.Be suitable in the stuffing box device of all kinds of valves, pump of industrial field etc., dynamic and static sealing, to realize good sealing.
Description
The present invention relates to a kind of novel Expanded graphite and teflon braided composite packing material (also pan of a steelyard root), be applicable in the stuffing box device of dynamic and static sealings such as all kinds of valves, pump, to realize good sealing.
Traditional braided packing comprises with material: fiber crops, cotton, asbestos, polytetrafluoroethylene fiber and charcoal fiber etc.As sealing material, all there are some problems separately in they, and numb, cotton poor performance is seldom used.Asbestos its crystallization meeting when high temperature is analysed, and loses sealing effect gradually.Moreover behind the asbestos dust suction respiratory system, harmful.So some developed country has begun restriction and has used asbestos product.Though polytetrafluoroethylene fiber and charcoal fiber excellent performance cost an arm and a leg, and have limited to a certain extent and have promoted the use of.Expanded graphite is a kind of more satisfactory sealing material that domestic early eighties rises, and it has high-low temperature resistant, corrosion-resistant, characteristics such as pliability good, selflubricating, but intensity lower (tensile strength is 4-6MPa) can not be used separately and manufacture braided packing.If compound, then can make braided packing with other material.Complex method has two kinds.A kind of is interior compound, be exactly compound material as skeleton, its outer surface is still Expanded graphite.This constructed products shortcoming is that the medium that a large amount of flake graphites are very easily had certain pressure in the using process washes away, thereby loses its sealability.Another kind is outer compound, is exactly other material on compound on the matrix of flexible graphite plate, is characterized in that outer surface is a composite material.As long as it is suitable that composite material is selected, then above-mentioned bad phenomenon can not take place.
Task of the present invention provide a kind of outer combined type by Expanded graphite and the compounded braided packing of teflon, the sealing in the stuffing box such as the valve that is widely used under strong acid-base medium and high temperature and high pressure condition condition, working, pump.
The present invention finishes as follows: flexible graphite sheet material and the teflin tape of selecting function admirable for use, suitable Bond is coated on the two sides of flexible graphite sheet material, teflin tape is covered thereon, dry then, temperature is 40-210 ℃, time is 0.5-4 hour, promptly obtains composite sheet.Again composite sheet is cut into strip, twists with the fingers into wire and typing, promptly obtain the braiding bundle.After the braiding of eight ingots, punching braiding or jacket layer braiding, flood operations such as tetrafluoro emulsion and integer again, can obtain Expanded graphite and teflon braided composite packing material.
Below in conjunction with accompanying drawing invention is described in further detail.
Fig. 1 is composite plate structure figure of the present invention.
Fig. 2 is composite sheet slitting figure of the present invention.
Fig. 3 is the figure of twisting thread of the present invention.
Fig. 4 is the braided packing structural drawing of eight ingots braiding of the present invention.
With reference to Fig. 1, [1] is teflin tape, and thickness is 0.07-0.3mm, and [2] are flexible graphite sheet material, and its thickness is 0.15-0.8mm.Fig. 2 cuts into strip to composite sheet, and its width is 6-15mm.Fig. 3 is the situation after twisting thread, and its cross section is circular.Fig. 4 is the braided packing after braiding of eight ingots and integer, and its cross section is square.By changing the size or the quantity of braiding bundle, can obtain the braided packing of plurality of specifications.
Braided packing provided by the invention, it is simple to have production technology, production cost lower (1/3-1/4 that only has the charcoal fiber)), the scope of application is characteristics widely.
Claims (3)
1, by flexible graphite sheet material and the compounded braided packing of teflin tape, it is characterized in that:
A, selected the compound of flexible graphite sheet material and teflin tape.
B, braiding Shu Caiyong teflon coat the sandwiched structure of Expanded graphite.
Slitting, the production method of twisting thread of c, braiding bundle.
2, according to the braided packing of claim 1 regulation, it is characterized in that between flexible graphite sheet material and teflin tape, having added Bond.
3, according to the braiding bundle of claim 1 regulation, the diameter after it is characterized in that twisting thread and finalizing the design is φ 1.5～φ 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106349 CN1021781C (en) | 1991-03-12 | 1991-03-12 | Braided composite packing material of flexible graphite and polytetrafluoro ethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106349 CN1021781C (en) | 1991-03-12 | 1991-03-12 | Braided composite packing material of flexible graphite and polytetrafluoro ethylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056561A true CN1056561A (en) | 1991-11-27 |
| CN1021781C CN1021781C (en) | 1993-08-11 |
Family
ID=4907774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106349 Expired - Fee Related CN1021781C (en) | 1991-03-12 | 1991-03-12 | Braided composite packing material of flexible graphite and polytetrafluoro ethylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021781C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052030C (en) * | 1994-03-31 | 2000-05-03 | 秦树南 | Process for production of compounded flexible graphite braided packing and products thereof |
| CN102206481A (en) * | 2011-05-23 | 2011-10-05 | 西峡县金方圆密封材料有限责任公司 | High-polymer fibre rust-resistant flexible graphite sealing packing |
| CN103953730A (en) * | 2014-04-30 | 2014-07-30 | 宁波易天地信远密封技术有限公司 | Combined packing ring |
-
1991
- 1991-03-12 CN CN 91106349 patent/CN1021781C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052030C (en) * | 1994-03-31 | 2000-05-03 | 秦树南 | Process for production of compounded flexible graphite braided packing and products thereof |
| CN102206481A (en) * | 2011-05-23 | 2011-10-05 | 西峡县金方圆密封材料有限责任公司 | High-polymer fibre rust-resistant flexible graphite sealing packing |
| CN103953730A (en) * | 2014-04-30 | 2014-07-30 | 宁波易天地信远密封技术有限公司 | Combined packing ring |
| CN103953730B (en) * | 2014-04-30 | 2016-09-14 | 宁波易天地信远密封技术有限公司 | A kind of combined stuffing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1021781C (en) | 1993-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |