CN1091781C - Plastic type flexible gasket - Google Patents
Plastic type flexible gasket Download PDFInfo
- Publication number
- CN1091781C CN1091781C CN 00109264 CN00109264A CN1091781C CN 1091781 C CN1091781 C CN 1091781C CN 00109264 CN00109264 CN 00109264 CN 00109264 A CN00109264 A CN 00109264A CN 1091781 C CN1091781 C CN 1091781C
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- Prior art keywords
- filler
- lubricating oil
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- dry
- graphite
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- Expired - Fee Related
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- Lubricants (AREA)
- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to a plastic type flexible sealing filler which is characterized in that polytetrafluoroethylene is used as a main material; the matter containing silk floss, lubrication oil, butyl phthalate and graphite is mixed with the main material; the matter and the main material are plasticized at high temperature to form a plastic free state flexible filler without a fixed shape. The filler of the present invention is suitable for various kinds of pumps which are sealed in a packing mode, valves, speed reducers, etc. The filler can be used for reducing friction and lowering energy consumption. The filler has the advantages of long service life, good sealing performance and no leakage, and saves cost about 93% one year.
Description
The present invention relates to sealing material, more particularly, is that a kind of pump class, valve, speed reduction unit etc. of being used for have the axostylus axostyle sealing material that rotatablely moves.
The existing pump class adopts the packing of typing specification more, and the stuffing box of pump is inserted in layering, compresses the purpose that reaches sealing with lid.Existing packing major part is a strip, needs multiple working procedures such as cutting, opposite joint during installation, and installation difficulty is bigger, makes the packing distortion by friction top fully in the use, thereby holds the purpose that axostylus axostyle reaches sealing tightly.This sealing method power consumption is big, and is serious to bearing wear, and pump housing maintenance is frequent, and many packing materials use butter, graphite more, makes its wear-resisting, poor corrosion resistance, and work-ing life is short.
The objective of the invention is to overcome the shortcoming of prior art, a kind of plastic type is provided, flows and load, be applicable to the flexible gasket of Any shape stuffing box automatically.
Realize the main technical schemes of the object of the invention: with the tetrafluoroethylene is major ingredient, mixes the material that comprises silk flosssilk wadding, lubricating oil, through the high temperature plasticizing, forms no solid shape and has plastic free state software filler.
Filler of the present invention is formed and weight percentage:
Ptfe emulsion 15-75%, PolytetrafluoroethylDry Dry-powder 5-20%, N46 lubricating oil 15-25%, second butyl tin 0.05-0.1%, butyl phthalate 3-5%, oxammonium hydrochloride 0.4-0.6%, type methylene polyacrylamide (MPA) 0.2-0.4%, silk flosssilk wadding 5-20%, graphite 0-40%.Above-mentioned percentage composition is 100 in filler weight.
The purity of described ptfe emulsion is 50%, meets the GB11990-89 standard.
Described PolytetrafluoroethylDry Dry-powder purity is 99%, accord with Q/CGY32-91 standard.
Described lubricating oil is that the trade mark is the industrial lubricant of N46, meets the GB3141-82 standard.
Described second butyl tin is the commercially available prod, and it is the filler protective material.
Described oxammonium hydrochloride is the reductive agent of filler, is the commercially available prod.
Described graphite, granularity is 400 orders, is the commercially available prod.
Described type methylene polyacrylamide, silk flosssilk wadding all are the commercially available prod.
The preparation method of filler of the present invention may further comprise the steps:
1. in ptfe emulsion, add methene base acrylamide, oxammonium hydrochloride, lubricating oil and graphite, high-speed stirring 8-10 minute, described lubricants capacity was the 75-80% of the lubricating oil total amount in the filler;
2. with PolytetrafluoroethylDry Dry-powder, remaining lubricating oil, second butyl tin, silk flosssilk wadding fully mix, and put into drying baker then, and drying is 2 hours under 180-220 ℃.
3. the mixture that butyl phthalate and step (1), step (2) are obtained is put together, mix to be placed in the drying baker, 220-250 ℃ dry 2.5-3 hour down;
4. with the product of step (3), mix the flexible gasket of the no solid shape of fiber under the condition of lucifuge, promptly obtaining in power ventilation 45-48 hour.
Advantage of the present invention and effect:
1. filler of the present invention is applicable to the various pump classes that seal in the packing mode, valve, step-down gear etc.;
2. minimizing mechanical friction cuts down the consumption of energy, and 2-5% can economize on electricity;
3. filler of the present invention is because the employing tetrafluoroethylene is a major ingredient, and the auxiliary material that comprises silk flosssilk wadding, so long service life of filler, number of dropouts little (year rate of loss 5-10%), compare with traditional packing and can prolong life cycle greatly, and the reduction Master Cost, alleviate maintenance personnel's labour intensity;
4. packing seal performance is good, and no water clock economizes on resources, environmental health, and install and use simple and easy to do;
5. adopt the comprehensive cost of use of filler of the present invention low, year saving expense about 93%.
Further describe characteristics of the present invention below by specific examples.
Example 1
Below each moiety be unit with " gram ".
1. get purity and be 50% ptfe emulsion 1200, add methene base polyacrylamide 3.15, oxammonium hydrochloride 5.2, N46 lubricating oil 125, high-speed stirring 8 minutes.
2. with PolytetrafluoroethylDry Dry-powder 105, N46 lubricating oil 50, second butyl tin 0.673, silk flosssilk wadding 125, these four kinds of compositions fully mix, and put into drying baker then, and drying is 2 hours under 180 ℃ temperature.
3. with butyl phthalate 57, the mixture that produces with step 1 and step 2 mixes, and puts into drying baker after stirring, and drying is 2.5 hours under 220 ℃.
4. with the product power ventilation of step 3 48 hours, should note lucifuge in the ventilation process.
Obtain finished product for white, in mix fiber, no solid shape has good plastic free state particle software filler.Outward appearance is clean high-grade, every technical indicator excellence.
Example 2
Below each moiety be unit with " gram ".
1. get purity and be 50% ptfe emulsion 300, add methene base polyacrylamide 4.5, oxammonium hydrochloride 6.8, N46 lubricating oil 160, graphite 375, high-speed stirring 10 minutes.
2. with PolytetrafluoroethylDry Dry-powder 190, N46 lubricating oil 60, second butyl tin 0.945, silk flosssilk wadding 75, these four kinds of compositions fully mix, and put into drying baker then, and drying is 2 hours under 220 ℃ temperature.
3. with butyl phthalate 40, the mixture that produces with step 1 and step 2 mixes, and puts into drying baker after stirring, and drying is 3 hours under 250 ℃.
4. with the product power ventilation of step 3 45 hours.
Obtain at last black gray, in mix fiber, no solid shape, have good plastic free state software filler.This grey filler is lower slightly than white filler pressure-bearing, and other technical indicator basically identical can satisfy the needs of most water pump packings, can reduce production costs, and to market a kind of product of easier popularization.
Example 3
This example is to compare with 75KW double suction horizontal pump use-case 1 filler and packing:
One, two kinds of material annual costs relatively
Packing year Master Cost:
A. average three weeks are changed once, and about 1.2kg/ time, 190.00 yuan/kilogram of unit prices,
B. year Master Cost: 190.00 * 1.2 * 365/21=3963.00 unit/year
Filler year Master Cost
(1) filler proportion 1.3,1.50 yuan/gram of unit price, year loss amount≤10%, stuffing box 382cm
3
(2) year Master Cost: 382 * 1.3 * 1.50 * 1.1 *=819.00 yuan/year
Two, two kinds of material year comprehensive cost comparisons:
Packing year comprehensive cost
(1) packing year consumption
A. year Master Cost is 3963.00 yuan/year
B. axle sleeve was changed once in average 6 months, 100 * 2=200 unit/time;
C. bearing was changed once in average 6 months, 45 * 2=90.00 unit/time;
D. repair 100 yuan/time of auxilliary material, labour costs;
E. year is consumed 3963+200 * 2+90 * 2+100 * 2=4743 unit/year
(2) Spring Festival holidays electricity charge are used
Press reducing power consumption 2%, 0.43 yuan/degree of commercial power, 300 days meters of pump operate time, the Spring Festival holidays electricity charge are used: 7.5 * 24 * 300 * 0.02 * 0.43=4644 unit/year;
(3) Spring Festival holidays water rate is used
By the pump 0.5m that on average leaks
3/ h, 0.38 yuan/m of fees for water supplied
3, 0.3 yuan/m of drainage fee
3, 300 days working times meters, Spring Festival holidays water rate is used: 0.5 * 24 * 300 (0.38+0.3)=2448 yuan/year
(4) year comprehensive cost: 4743+4644+2448=11835 unit/year
2. filler year 819.00 yuan/year of consumption costs (calculating the same).
More than calculate as can be known, 1 year comprehensive cost, filler of the present invention is 819/11835 * 100% ≈ 6.92% of packing, wherein also comprise one-time investment, and filler of the present invention is reusable, only need add 10% every year and get final product, therefore use filler of the present invention after 1 year, will save more comprehensive cost.
Claims (2)
1. the flexible gasket of a plastic type, the composition and the weight percentage that it is characterized in that filler are as follows: ptfe emulsion 15-75%, purity are 99% PolytetrafluoroethylDry Dry-powder 5-20%, lubricating oil 15-25%, second butyl tin 0.05-0.1%, butyl phthalate 3-5%, oxammonium hydrochloride 0.4-0.6%, type methylene polyacrylamide 0.2-0.4%, silk flosssilk wadding 5-20%, graphite 0-40%
Above-mentioned each component sum should reach 100%.
2. the preparation method of the described filler of claim 1 may further comprise the steps:
(1) add methene base acrylamide, oxammonium hydrochloride, lubricating oil and graphite in ptfe emulsion, high-speed stirring 8-10 minute, the amount of wherein said lubricating oil was the 75-80% of the lubricating oil total amount in the filler;
(2) PolytetrafluoroethylDry Dry-powder, remaining lubricating oil, second butyl tin, silk flosssilk wadding are fully mixed, put into drying baker then, drying is 2 hours under 180-220 ℃;
(3) mixture that butyl phthalate and step (1), step (2) are obtained is put together, mix to be placed in the drying baker, 220-250 ℃ dry 2.5-3 hour down;
(4) to the product of step (3), power ventilation 45-48 hour, note lucifuge in the ventilation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109264 CN1091781C (en) | 2000-06-14 | 2000-06-14 | Plastic type flexible gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109264 CN1091781C (en) | 2000-06-14 | 2000-06-14 | Plastic type flexible gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1275592A CN1275592A (en) | 2000-12-06 |
| CN1091781C true CN1091781C (en) | 2002-10-02 |
Family
ID=4579535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00109264 Expired - Fee Related CN1091781C (en) | 2000-06-14 | 2000-06-14 | Plastic type flexible gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1091781C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6746768B2 (en) * | 2001-12-26 | 2004-06-08 | Advanced Energy Technology Inc. | Thermal interface material |
| CN100341972C (en) * | 2005-06-10 | 2007-10-10 | 张志伟 | Nano packing filling and method for making same |
| CN103724894B (en) * | 2013-12-12 | 2016-01-20 | 安徽凯特泵业有限公司 | The high temperature resistant polyphenyl ether modified polytetrafluoroethylmaterial material of a kind of pump valve |
| CN104197006B (en) * | 2014-07-30 | 2016-05-04 | 苏州赛斯德工程设备有限公司 | A kind of heatproof sealing drilled packing ring |
-
2000
- 2000-06-14 CN CN 00109264 patent/CN1091781C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1275592A (en) | 2000-12-06 |
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| 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 |