CN203383870U - High-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance - Google Patents
High-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance Download PDFInfo
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- CN203383870U CN203383870U CN201320503744.6U CN201320503744U CN203383870U CN 203383870 U CN203383870 U CN 203383870U CN 201320503744 U CN201320503744 U CN 201320503744U CN 203383870 U CN203383870 U CN 203383870U
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- oil seal
- valve
- lip
- resistant
- sealed colloid
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Abstract
The utility model relates to a high-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance. The turbocharging valve oil seal comprises a metal framework, and a fluororubber sealing gum body located at the inner upper end, and the fluororubber sealing gum body is in tight sealed contact with a valve rod and a valve guide pipe. The fluororubber sealing gum body is sleeved with an oil seal spring, a main lip, a back air lip and a straight-face seal body are arranged on the inner side of the upper portion, the inner side of the middle portion and the inner side of the lower portion of the fluororubber sealing gum body respectively, four bosses distributed annularly are arranged between the main lip and the back air lip, and the clearance between each boss and the valve rod is 0.1-0.2mm. Through proper rubber constituents, the oil seal can be used under a work temperature of 250 DEG C, and has better abrasion resistance; the metal framework is processed through carbonitriding, so that the metal framework is harder, has better tensile strength and yield stress, and is adaptive to high-temperature and high-pressure work conditions. The quality performance of the whole product is improved, the oil seal can be used under more rigorous work conditions, and the application range is wider.
Description
Technical field
The utility model relates to a kind of turbosupercharging valve oil seal, the turbosupercharging valve oil seal of especially a kind of high temperature resistant, high pressure, high abrasion.
Background technique
At present motor car engine mainly is divided into: natural aspiration starts, turbosupercharged engine, mechanically-sapercharged engine three major types, in recent years, Chinese Automobile Industry develops rapidly, automobile with turbo charged motor is also more and more, turbosupercharged engine has following advantage: 1. discharge capacity is little, and power is strong, 2. compression ratio is large, and energy loss is little, fuel-efficient, popularization and application along with turbosupercharged engine, the obturator of motor requires more and more higher, reason due to various harsh conditions, the valve oil seal of naturally aspirated engine can not meet the use of turbosupercharged engine, and the valve oil seal part plays vital central role in motor, turbosupercharged engine is a comprehensive very strong technology, not only to solve pressurized machine, the Key technique problems such as high pressure fuel pump, how the valve oil seal that simultaneously directly affects engine behavior meets high temperature, high pressure, the seal operation environment of high friction and anti-mixed medium (lubricant oil+fuel oil) is also a very harsh technical task, valve oil seal still fails to break through this bottleneck at present.
Summary of the invention
In order to solve above technical problem, it is a kind of high temperature resistant that the purpose of this utility model is to provide, the turbosupercharging valve oil seal of high abrasion, valve oil seal structure is carried out to uniqueness optimization, and the special-purpose valve oil seal material of exploitation turbosupercharging, meet and just guaranteeing turbosupercharged engine, the harsh operating mode of negative pressure, be that turbosupercharged engine also can produce the malleation of 400KPa-600KPa when producing negative pressure (pressurized machine is not worked), when malleation continue lip is impacted the time, guarantee turbosupercharging valve oil seal master lip, enclasping force and the servo-actuated property of back of the body gas lip and valve stem, thereby meet the high temperature of turbosupercharged engine, the high-pressure work condition.
The utility model, comprise metal frame, the fluorine rubber sealed colloid that is positioned at the metal frame upper end and contacts with the valve guide bushing tight seal with valve stem, on the fluorine rubber sealed colloid, overcoat has oil seal spring, upper inner at the fluorine rubber sealed colloid, be provided with main lip, main lip and valve stem interference fit, inboard, middle part at the fluorine rubber sealed colloid, be provided with back of the body gas lip, back of the body gas lip and valve stem interference fit, lower inside at the fluorine rubber sealed colloid, be provided with the L shaped sealed colloid of facing directly, the L shaped sealed colloid of facing directly and valve guide bushing interference fit, between main lip and back of the body gas lip, be provided with four boss of annular spread, between back of the body gas lip and the L shaped sealed colloid of facing directly, be provided with the R connected in star.
The utility model, described boss (5) is 0.1～0.2mm with the gap of valve stem (10).
The utility model, described fluorine rubber sealed colloid is prepared by the raw material of following mass parts:
Fluorine rubber (FC-2146X) 100;
Silicious marl (Celite350) 11.5～15;
Calcium carbonate (600EST) 11～14;
N990(pyrolysis method carbon black) 1.5～2.5;
Iron oxide red (S-130) 3.5～5.5;
Calcium hydroxide (NICC5000) 2.5～3.5;
Magnesium oxide 1～2;
Accelerant B PP 4～5;
Palm wax 0.8～1.5.
The utility model, described metal frame (3) is processed through 2 subsurface phosphatization antirusts, and its treatment conditions are:
(1) carbonitriding condition:
Degree of depth 0.05mm;
Hardness HV/0.2(410～550);
560 ℃ of temperature;
Time 1h;
(2) carbonitriding condition:
Degree of depth 0.27mm;
Hardness HV/0.2(270max);
820 ℃ of temperature;
Time 2h.
The utility model, its beneficial effect is:
1. improve high temperature resistance and the Nai Gao frictional property of turbosupercharged engine valve oil seal;
2. improve the anti-mixed medium (lubricant oil+fuel oil) of turbosupercharged engine valve oil seal;
3. improve the resistance to compression of turbosupercharged engine valve oil seal, withstand voltage indeformable stability;
4. improve the servo-actuated flexibility of turbosupercharged engine valve oil seal back of the body gas lip;
5. improve fitting tightly of turbosupercharged engine valve oil seal fitting tight face, strengthen the sealing pull-out force.
The utility model can be by the proportioning of rubber constituent, and rubber can be used in 250 ℃ of operating temperatures lastingly, has better wear-resisting property simultaneously; Metal frame carries out carbonitriding, the surface treatment phosphatization antirust is processed, make metal frame harder, there is better tensile strength and yield stress, the operating conditions that adapts to high temperature, high pressure, not only for to have improved the capability and performance of whole product, and can meet harsher operating conditions, make application area wider; Product structure improves, and makes Safety performance better, and sealability is more superior.
The accompanying drawing explanation
The structural representation that Fig. 1 is the present embodiment, the A-A sectional view that Fig. 2 is Fig. 1, Fig. 3 is used state assembling reference drawing.
In figure, 1, fluorine rubber sealed colloid 2, oil seal spring 3, metal frame 4, main lip 5, boss 6, back of the body gas lip 7, R connected in star 8, L shapedly face 9 directly, valve guide bushing 10, valve stem 11, support spring.
Embodiment
With reference to Fig. 1-Fig. 3, a kind of high temperature resistant, high pressure, the turbosupercharging valve oil seal of high abrasion, comprise metal frame 3, the fluorine rubber sealed colloid 1 that is positioned at the metal frame upper end and contacts with valve guide bushing 9 tight seals with valve stem 10, on fluorine rubber sealed colloid 1, overcoat has oil seal spring 2, upper inner at fluorine rubber sealed colloid 1, be provided with main lip 4, main lip 4 and valve stem 10 interference fit, inboard, middle part at fluorine rubber sealed colloid 1, be provided with back of the body gas lip 6, back of the body gas lip 6 and valve stem 10 interference fit, lower inside at fluorine rubber sealed colloid 1, be provided with L shaped 8 the sealed colloid of facing directly, L shaped 8 sealed colloids and valve guide bushing 9 interference fit faced directly, between main lip 4 and back of the body gas lip 6, be provided with four boss 5 of annular spread, boss 5 is 0.1～0.2mm with the gap of valve stem 10, back of the body gas lip 6 and L shaped facing directly between 8 sealed colloids, be provided with R connected in star 7.
Wherein, prepared by the raw material of following mass parts by described fluorine rubber sealed colloid 1:
In formula, adopt fluorine rubber (FC-2146X) to mix with silicious marl (Celite350) proportioning, reduce costs, improve mechanical property and process industrial art performance etc., under the condition of high temperature, good rebound elasticity is arranged, can under 250 ℃, can use for a long time, 300 ℃ of lower short-terms are used.Calcium carbonate (600EST) fusing point is high, is insoluble in water, is insoluble to ethanol petrol, guarantees anti-mixed medium (lubricant oil+fuel oil); N990(pyrolysis method carbon black) be that to have a particle diameter large, structural low, high fillibility characteristics, can make product there is heat-resisting, oil resistant, low compression deformation rate, high resilience and low the hysteresis, it is high that iron oxide red (S-130) has a fusing point, be with bonding magnetic characteristics, can guarantee the combination stability of other composition, be also a kind of pigment simultaneously, and after proportioning, rubber is brown.Calcium hydroxide (NICC5000), as a kind of bulking agent, has mixing convenience, does not affect the vulcanizing system of rubber, regulates the hardness characteristics, can save other rubber raw materials proportioning, reaches the purpose reduced costs simultaneously.Add magnesium oxide, can play mobility and antioxidant capacity, increase tensile strength and the anti-impact force of rubber.Add accelerant B PP, can reduce the time of sulfuration, enhance productivity.Palm wax contributes to mixing, controls volume change, improves fluorine glue mobility and release property, guarantees that product appearance is not impaired.
After above rubber constituent is mixing by proportioning simultaneously, function high temperature resistant, high abrasion that rubber can possess, reach the various environmental conditionss of turbosupercharged engine, is a kind of material of special special turbosupercharging valve oil seal.
Wherein, the treatment conditions of described metal frame 3 are:
Skeleton special processing step: use 1. condition to carry out the degree of depth and hardness carbonitriding processing for the first time forming skeleton, continue again to use 2. condition to carry out the degree of depth and hardness carbonitriding processing for the second time, after two kinds of operations complete, on the skeleton surface, carry out the phosphatization antirust processing.
After skeleton is processed by carbonitriding, hardness, wear-resisting type, fatigue resistance have been improved, there is high-plasticity (α k >=120 J/cm2), guaranteed the long-term supporting effect of turbosupercharging valve oil seal under high pressure, high movement velocity, also guaranteed that the permanent use of turbosupercharging valve oil seal is indeformable, do not ftractureed, made the Safety performance of turbosupercharged engine be protected.
Please refer to Fig. 3, after the assembling of this oil sealing, main lip 4 by special fluorine rubber passes through interference fit with valve stem 10, under the resilience enclasping force of oil seal spring 2, realize sealing, the advantages such as that the special fluorine rubber that fluorine rubber sealed colloid 1 adopts has is high temperature resistant, high abrasion, improve the life-span of winner's lip 4 greatly.Boss 5 is reserved 0.1～0.2mm gap after assembling is closed, and while slightly rocking when valve stem 10 moves rapidly, can play the rectification leading role.Back of the body gas lip 6 also with valve stem 10 interference fit, but the magnitude of interference coordinated is than main lip 4 interference little (0.1～0.3) mm, can guarantee that like this valve stem 10 is at a high speed, during the high pressure motion, by micro-engine oil leakage, reach the lubrication protection effect.And back of the body gas lip 6 outsides are provided with R type groove 7, in the time of can making to carry on the back gas lip 6 and change with the pressure of turbocharged engine, shrink flexibly, play better servo-actuated property.L-type face directly 8 with valve guide bushing 9 interference assemblings after, in contacting of face and face, realize that the sealing junction is larger, stressed more stablizing effect, the vibrations of avoiding the utility model to cause because of harsh operating mode, and cause assembling to be become flexible.Support spring 11 directly is assembled on carbonitriding metal frame 3, carbonitriding metal frame 3 has high hardness, the characteristics such as tensile strength is good, existing high voltage bearing strength, high temperature resistant indehiscent yield force is arranged again, better guaranteed safety of structure of the present utility model, extended for a long time in high temperature, high pressure, high-revolving working life.
Claims (2)
- One kind high temperature resistant, high pressure, the turbosupercharging valve oil seal of high abrasion, comprise metal frame (3), the fluorine rubber sealed colloid (1) that is positioned at the metal frame upper end and contacts with valve guide bushing (9) tight seal with valve stem (10), at the upper overcoat of fluorine rubber sealed colloid (1), oil seal spring (2) is arranged, it is characterized in that: the upper inner in fluorine rubber sealed colloid (1), be provided with main lip (4), main lip (4) and valve stem (10) interference fit, inboard, middle part at fluorine rubber sealed colloid (1), be provided with back of the body gas lip (6), back of the body gas lip (6) and valve stem (10) interference fit, lower inside in fluorine rubber sealed colloid (1), be provided with the sealed colloid of L shaped facing directly (8), the sealed colloid of L shaped facing directly (8) and valve guide bushing (9) interference fit, between main lip (4) and back of the body gas lip (6), be provided with four boss (5) of annular spread, between the sealed colloid of back of the body gas lip (6) and L shaped facing directly (8), be provided with R connected in star (7).
- 2. valve oil seal according to claim 1 is characterized in that: described boss (5) is 0.1～0.2mm with the gap of valve stem (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503744.6U CN203383870U (en) | 2013-08-18 | 2013-08-18 | High-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503744.6U CN203383870U (en) | 2013-08-18 | 2013-08-18 | High-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance |
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| Publication Number | Publication Date |
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| CN203383870U true CN203383870U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320503744.6U Expired - Lifetime CN203383870U (en) | 2013-08-18 | 2013-08-18 | High-temperature-resistant and high-pressure-resistant turbocharging valve oil seal high in abrasion resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388501A (en) * | 2013-08-18 | 2013-11-13 | 揭阳市天诚密封件有限公司 | Turbocharging valve oil seal capable of resisting high temperature, high pressure and heavy wear |
-
2013
- 2013-08-18 CN CN201320503744.6U patent/CN203383870U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388501A (en) * | 2013-08-18 | 2013-11-13 | 揭阳市天诚密封件有限公司 | Turbocharging valve oil seal capable of resisting high temperature, high pressure and heavy wear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: To the north of Guangdong city of Jieyang province Jieyang 522000 industrial transfer Industrial Park Road, Chaoyang West Songtao Street Patentee after: GUANGDONG TIANCHENG SEALS CO.,LTD. Address before: East Rong Dong Industrial Zone 522000 Guangdong Fenglin District of Rongcheng city in Jieyang Province Patentee before: JIEYANG TIANCHENG SEAL COMPONENTS Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |