CN105201897B - Static seal for auto pump - Google Patents
Static seal for auto pump Download PDFInfo
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- CN105201897B CN105201897B CN201510696633.5A CN201510696633A CN105201897B CN 105201897 B CN105201897 B CN 105201897B CN 201510696633 A CN201510696633 A CN 201510696633A CN 105201897 B CN105201897 B CN 105201897B
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- seat
- bellows
- stationary ring
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Abstract
A kind of static seal for auto pump, including stationary ring, quiet group of seat, bellows, spring, bellows and spring are installed on quiet group of seat, and spring is set on bellows and the both ends of spring are mutually abutted against with the both ends of bellows by spring base；One end of bellows is acted against on quiet group of seat, the other end is connected with stationary ring, and wall is fitted closely with bellows and quiet group of seat inside and outside stationary ring；The outer sheath of spring is equipped with the cover body with quiet group of seat tight fit.Stationary ring component：50 90 parts of graphite, 14 parts of nickel powder, 14 parts of aluminium powder, 0.5 2 parts of carborundum, 13 parts of copper powder, 15 parts of molybdenum powder, 23 parts of chlorinated paraffin, 30 50 parts of phenolic resin is using the above structure, in the spring sealed sealed environment formed in quiet group of seat and cover body, so as to prevent spring to be contacted with the direct of medium, the corrosion probability of spring is reduced, ensure the performance of spring, so that further position static seal directly seals stability with dynamic sealing.
Description
Technical field
The present invention relates to auto pump technical field of sealing technology, and in particular to a kind of static seal for auto pump.
Background technology
Mechanical seal is that one kind relies primarily on elasticity to sealing pair progress pretension, is made jointly in medium and flexible member pressure
With lower so that sealing pair compresses and reaches the axial end face sealing device of sealing.And for the static seal of auto pump, it is tied
Structure generally comprises quiet group of seat (corrugated header), bellows (rubber bellows), spring base, spring, stationary ring；Bellows and stationary ring peace
On quiet group of seat, spring pocket is on bellows and withstands on the left and right ends of bellows, and the left and right ends of spring and bellows
Between be provided with spring base, one end of bellows is withstood on quiet group of seat, and the other end is connected with stationary ring, forms complete static seal；
Or and one end of static seal be quiet group of seat, the other end is stationary ring body, and stationary ring body inlays stationary ring；And spring one end is connected to
In quiet group of seat, the other end is connected in stationary ring body, realizes the connection of stationary ring and quiet group of seat, and spring is equally exposed to outside completely
Side, without any protection.
But above-mentioned this traditional static seal, due to spring directly it is exposed on the outside, it is easy to in sealed environment
Physical contact between media, for example, in auto pump mechanical seal environment directly with the media contact such as anti-icing fluid, use bullet for a long time
Spring is necessarily corroded, so that the performance of spring is destroyed, so as to further influence the sealing between dynamic sealing and static seal
Effect.
In addition, above-mentioned traditional static seal, stationary ring therein is more using carbon graphite ring；In order to meet requirement,
The material that general requirement prepares stationary ring can implement function such as：1st, in terms of mechanical property：With higher elasticity modulus, intensity and
PV values, relatively low friction coefficient and linear expansion coefficient allowable, excellent wearability and self lubricity and good impermeability
Deng.2nd, in terms of corrosive nature：With good chemical preservation performance, can prevent because of burn into abrasion, dissolving and swelling of medium etc.
Caused damage.3rd, in terms of thermal performance：With good thermal conductivity, heat resistance, cold resistance and the adaptability of temperature jump.It is special
It is not that self-lubricating property therein is particularly critical, is one of key factor for influencing stationary ring job stability, therefore it provides a kind of
It is particularly important that stationary ring that the good carbon graphite ring of self-lubricating property is formed.
The content of the invention
The present invention is directed to the above-mentioned deficiency of the prior art, there is provided a kind of quiet spring, which is not easy burn into, can effectively keep spring
Can, and then ensure the static seal for auto pump of sealing stability.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of static seal for auto pump,
Including stationary ring, quiet group of seat, bellows, spring, the bellows and spring are installed on quiet group of seat, and spring is set in bellows
The upper and both ends of spring are mutually abutted against with the both ends of bellows by spring base；One end of the bellows acts against quiet group of seat
The upper, other end is connected with stationary ring, and wall is fitted closely with bellows and quiet group of seat inside and outside stationary ring；The outside of the spring
It is arranged with the cover body with quiet group of seat tight fit.
Using the above structure, due to being equipped with the cover body with quiet group of seat tight fit in the outer sheath of spring, so that spring is close
It is encapsulated in the sealed environment that quiet group of seat is formed with cover body, so as to prevent spring to be contacted with the direct of medium, reduces spring
Corrode probability, ensure the performance of spring, so that further position static seal directly seals stability with dynamic sealing.
Preferably, the outer edge of one end that the stationary ring leans with rotating ring is provided with chamfering；Using the structure, when
When stationary ring is contacted with rotating ring, the sealing surface that this chamfering can run liquid medium into dynamic and static ring forms moisture film, so that effectively anti-
Only dry wear, realizes the stability of sealing and extends the service life of dynamic and static ring.
Preferably, the madial wall of the quiet group of seat is provided with and the matched groove of notch on stationary ring madial wall；
Using the above structure, when seated, stationary ring is first loaded into quiet group of seat and in the cavity of bellows composition, then quiet group of seat of punching press is right
Answer the position of the notch on stationary ring madial wall, groove formed on quiet group of seat so that clamping stationary ring, realize stationary ring and quiet group of seat and
Connection between bellows, so as to carry high-bond.
Preferably, a circle fluid sealant is coated with the periphery wall of the cover body；Using the above structure, can cause quiet
Sealing with realized between pump housing mounting hole it is soft contact, play and fill up cover body surface defect, realize better seal performance.
It is good the present invention also provides a kind of self-lubricating property, wear-resistant and service life length it is a kind of for auto pump
Static seal, the stationary ring in the static seal are prepared by each component of following parts by weight：50-90 parts of graphite, 1-4 parts of nickel powder, aluminium powder
1-4 parts, 0.5-2 parts of carborundum, 1-3 parts of copper powder, 1-5 parts of molybdenum powder, 2-3 parts of chlorinated paraffin, 30-50 parts of phenolic resin.
Its particle diameter such as the present invention above-mentioned graphite, nickel powder, copper powder, aluminium powder and molybdenum powder is micron level, as 10-1000 is micro-
Rice.
By adding nickel powder, aluminium powder and copper powder, the graphite that can cause sheet in sintering curing process is converted to the present invention
Spherical graphite, so as to improve the self-lubricating effect of graphite annulus, while also improves the impact flexibility and intensity of graphite annulus；And
Carbon in the addition and graphite of molybdenum powder therein forms carbide, has higher intensity and hardness, can strengthen matrix raising
The wear-resisting property of material；And the addition of copper powder can improve sintering character with acceleration of sintering.The present invention passes through above-mentioned various elements
Graphite annulus reasonably combined to prepare that processing self-lubricating property is high, that wear-resisting property is good and intensity, hardness are improved.
Brief description of the drawings
Fig. 1 present invention is used for the static seal axial sectional view structure diagram of auto pump.
Fig. 2 present invention is used for the static seal structure schematic diagram of auto pump.
The structure diagram that Fig. 3 present invention is used for the static seal of auto pump and dynamic sealing fits.
Embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description, but is not limited only to following reality
Apply example.
As shown in Figs. 1-3：A kind of static seal for auto pump, including stationary ring 1, quiet group of seat 2, bellows 3, spring 4,
The bellows 3 and spring 4 are installed on quiet group of seat 2, and spring 4 is set on bellows 3 and the both ends of spring 4 and ripple
The both ends of pipe 3 are abutted against by 4.1 phase of spring base；One end of bellows 3 is acted against on quiet group of seat 2, the other end is connected with stationary ring 1,
And wall fits closely the (phase that i.e. outboard sidewalls pass through bellows and quiet group of seat with bellows 3 and quiet group of seat 2 inside and outside stationary ring 1
Mutually extruding is realized and fitted closely each other, i.e. tight fit), the outer sheath of the spring 4 is equipped with the cover body with quiet group of seat tight fit
5。
Using the above structure, due to being equipped with the cover body with quiet group of seat tight fit in the outer sheath of spring, so that spring is close
It is encapsulated in the sealed environment that quiet group of seat is formed with cover body, so as to prevent spring to be contacted with the direct of medium, reduces spring
Corrode probability, ensure the performance of spring, so that further position static seal directly seals stability with dynamic sealing.
As shown in figs. 1 and 3, the outer edge of one end that stationary ring 1 of the present invention and the rotating ring of dynamic sealing lean is set
There is chamfering 1.1；Using the structure, when stationary ring 1 is contacted with rotating ring, this chamfering can run liquid medium into the close of dynamic and static ring
Front cover forms moisture film, so as to effectively prevent dry wear, realizes the stability of sealing and extends the service life of dynamic and static ring.
As shown in Figure 2：It is provided with the madial wall of quiet group of seat 2 of the present invention and the notch 1.2 on 1 madial wall of stationary ring
Matched groove 2.1；Using the above structure, when seated, first stationary ring is loaded in the cavity that quiet group of seat and bellows are formed,
Then quiet group of seat of punching press corresponds to the position of the notch on stationary ring madial wall, and groove is formed on quiet group of seat, so that clamping stationary ring, real
Existing stationary ring and the quiet group of connection between seat and bellows, so as to carry high-bond.
As shown in Figure 1：A circle fluid sealant 5.1 is coated with the periphery wall of cover body 5 of the present invention；Using above-mentioned knot
Structure, can to realize between static seal and pump housing mounting hole it is soft contact, play and fill up cover body surface defect, realize preferably close
The effect of sealing property.
Embodiment 1
Stationary ring in static seal is prepared by each component of following parts by weight：60 parts of graphite, 2 parts of nickel powder, 2 parts of aluminium powder, carbon
0.5 part of SiClx, 1.5 parts of copper powder, 1 part of molybdenum powder, 2.5 parts of chlorinated paraffin, 40 parts of phenolic resin.
Each raw material of above-mentioned formula is placed in mixer, 75 DEG C of mechanical 0.5 hours of kneading, 95 DEG C of kneading 1.5 again
Hour；Kneading feed powder is broken, cross 200 mesh sieves；Deserve to be called the mixed powder after stating sieving to be put into mould, apply the pressure of 20MPa
Cold moudling, pressurize 0.6min；Finally composite material is put into cabinet-type electric furnace, is cured according to following temperature gradient.First
Stage：1 it is small when from room temperature~140 DEG C, when insulation 1 is small at 140 DEG C；Second stage：5min from 140 DEG C~150 DEG C, 150 DEG C when
Keep the temperature 1 it is small when；Phase III：5min from 150 DEG C~160 DEG C, 160 DEG C when insulation 1 it is small when；Fourth stage：5min from 160 DEG C~
When insulation 1 is small at 170 DEG C, 170 DEG C；5th stage：5min from 170 DEG C~180 DEG C, 180 DEG C when insulation 1 it is small when；6th stage：
5min from 180 DEG C~190 DEG C, 190 DEG C when insulation 1 it is small when；7th stage：5min from 190 DEG C~200 DEG C, 200 DEG C when keep the temperature 1
Hour；Finally cool to room temperature with the furnace.
The density of machinery sealing material made from the present embodiment is 1.82g/cm3, Shore hardness 85HS, friction coefficient
For 0.21, compression strength 210MPa.
Embodiment 2
Stationary ring in static seal is prepared by each component of following parts by weight：70 parts of graphite, 2 parts of nickel powder, 2 parts of aluminium powder, carbon
1.5 parts of SiClx, 2 parts of copper powder, 2.5 parts of molybdenum powder, 3 parts of chlorinated paraffin, 45 parts of phenolic resin.
Preparation method is the same as embodiment 1.
The density of machinery sealing material made from the present embodiment is 1.75g/cm3, Shore hardness 90HS, friction coefficient
For 0.19, compression strength 200MPa.
Embodiment 3
Stationary ring in static seal is prepared by each component of following parts by weight：80 parts of graphite, 2 parts of nickel powder, 2 parts of aluminium powder, carbon
2 parts of SiClx, 3 parts of copper powder, 3 parts of molybdenum powder, 3 parts of chlorinated paraffin, 50 parts of phenolic resin.
Preparation method is the same as embodiment 1.
The density of machinery sealing material made from the present embodiment is 1.65g/cm3, Shore hardness 75HS, friction coefficient
For 0.22, compression strength 185MPa.
Claims (2)
1. a kind of static seal for auto pump, including stationary ring, quiet group of seat, bellows, spring, the bellows and spring
On quiet group of seat, spring is set on bellows and the both ends of spring are mutually abutted against with the both ends of bellows by spring base,
It is characterized in that：One end of the bellows is acted against on quiet group of seat, the other end is connected with stationary ring, and wall inside and outside stationary ring
Fitted closely with bellows and quiet group of seat；The outer sheath of the spring is equipped with the cover body with quiet group of seat tight fit；Described is quiet
Ring is prepared by each component of following parts by weight：50-90 parts of graphite, 1-4 parts of nickel powder, 1-4 parts of aluminium powder, 0.5-2 parts of carborundum,
1-3 parts of copper powder, 1-5 parts of molybdenum powder, 2-3 parts of chlorinated paraffin, 30-50 parts of phenolic resin；What the stationary ring leant with rotating ring
The outer edge of one end is provided with chamfering；The madial wall of the quiet group of seat is provided with matched with the notch on stationary ring madial wall
Groove.
2. the static seal according to claim 1 for auto pump, it is characterised in that：On the periphery wall of the cover body
It is coated with a circle fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510696633.5A CN105201897B (en) | 2015-10-23 | 2015-10-23 | Static seal for auto pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510696633.5A CN105201897B (en) | 2015-10-23 | 2015-10-23 | Static seal for auto pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201897A CN105201897A (en) | 2015-12-30 |
| CN105201897B true CN105201897B (en) | 2018-04-20 |
Family
ID=54949775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510696633.5A Active CN105201897B (en) | 2015-10-23 | 2015-10-23 | Static seal for auto pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201897B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343479A (en) * | 1979-11-13 | 1982-08-10 | Taiho Kogyo Co., Ltd. | Mechanical seals |
| CN201221491Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Mechanical sealing device |
| CN202250460U (en) * | 2011-08-26 | 2012-05-30 | 宁波方力密封件有限公司 | Water seal for combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58176498A (en) * | 1982-04-12 | 1983-10-15 | Anretsuto:Kk | Outside flow and balance type mechanical seal for pump |
| CN102807842B (en) * | 2012-08-24 | 2014-09-10 | 宁波市瑞通新材料科技有限公司 | Friction material for automobile brake |
| CN205047492U (en) * | 2015-10-23 | 2016-02-24 | 宁波方力密封件有限公司 | A static seal for automobile water pump |
-
2015
- 2015-10-23 CN CN201510696633.5A patent/CN105201897B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343479A (en) * | 1979-11-13 | 1982-08-10 | Taiho Kogyo Co., Ltd. | Mechanical seals |
| CN201221491Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Mechanical sealing device |
| CN202250460U (en) * | 2011-08-26 | 2012-05-30 | 宁波方力密封件有限公司 | Water seal for combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105201897A (en) | 2015-12-30 |
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