CN203421173U - Combined oil sealing piece - Google Patents
Combined oil sealing piece Download PDFInfo
- Publication number
- CN203421173U CN203421173U CN201320444132.4U CN201320444132U CN203421173U CN 203421173 U CN203421173 U CN 203421173U CN 201320444132 U CN201320444132 U CN 201320444132U CN 203421173 U CN203421173 U CN 203421173U
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- China
- Prior art keywords
- seal ring
- exterior
- sealing
- combination oil
- oil seal
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- Expired - Lifetime
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Abstract
The utility model provides a combined oil sealing piece which comprises an outer sealing ring, an inner sealing ring and springs. Sealing loops are arranged on the outer side circumferential face of the outer sealing ring, a main sealing lip and an auxiliary sealing lip are arranged on the inner side circumferential face of the inner sealing ring, the springs support the bottom circumferential face of the outer sealing ring and provide axial pressure, and the inner side circumferential face of the outer sealing ring is mutually connected with the outer side circumferential face of the inner sealing ring. The combined oil sealing piece is better sealing effect, longer in service life, obvious in economic benefit, and wide in application prospect.
Description
Technical field
The utility model relates to a kind of Sealing, relates in particular to a kind of combination oil seal part.
Background technique
Oil seal is the Sealing for body running shaft, and its effect is prevent liquid along axial rotary external leakage and prevent outside foreign material intrusion internal body.The Sealing of running shaft is except oil seal, also have mechanical seal and soft packing seal etc., but because that oil seal has is simple in structure, easy, with low cost, widely used feature is installed, so the running shaft of oil pump, speed reducer etc. adopts oil seal as Sealing mostly.
Fig. 1 shows the sectional view after the oil seal assembling of prior art.As shown in Figure 1, the oil seal 10 of prior art is arranged in the body hole consisting of running shaft 40, body 30 and gland 20.Fig. 2 illustrates the sectional view of the oil seal 10 of the prior art in Fig. 1.As shown in Figure 2, the oil seal 10 of prior art consists of sealing lip 11, spring 12 and seal ring 13.Sealing lip 11 contacts with the outer surface of running shaft 40 and is interference fit, spring 12 provides radial pressure for sealing lip 11, make sealing lip 11 hug running shaft 40 and leak and the invasion of outside foreign material to prevent internal liquid, seal ring 13 is fitted with the body hole inwall of body 30, plays a supportive role.
There is following defect in the oil seal of prior art: only has a sealing lip, except sealing internal liquid, be difficult to stop the intrusion of external dust foreign material, and the sealing effect while using for different operating modes is vulnerable to running shaft surface quality as the slightly impact of degree of making, turbidity test and assembly manipulation etc., when serious, can cause leakage of oil, its seal ring also can only play installation supporting effect.
Model utility content
The purpose of this utility model is to provide a kind of combination oil seal part, makes its inside circumference face and outer circumference face all can prevent inner oil liquid leakage and the invasion of outside foreign material, improves sealing effect and the working life of oil seal, and is applicable to being applied to different operating modes.
To achieve these goals, the utility model provides a kind of combination oil seal part, described combination oil seal part comprises exterior seal ring, inner seal ring and spring, wherein, the outer circumference face of exterior seal ring is provided with seal ring, the inside circumference face of inner seal ring is provided with primary seal lip and secondary sealing lip, and spring supporting is on the circumferential surface of the bottom of exterior seal ring and axial pressure is provided, and the inside circumference face of exterior seal ring and the outer circumference face of inner seal ring are connected to each other.
Wherein, described seal ring is at least two and is evenly distributed on the outer circumference face of exterior seal ring.
Wherein, described spring is at least three and be uniformly distributed along the bottom circumferential surface of exterior seal ring.
Wherein, described exterior seal ring and inner seal ring can consist of unlike material respectively.
Wherein, the material of described exterior seal ring can be urethane rubber.
Wherein, the material of described inner seal ring can be teflon.
The beneficial effects of the utility model are as follows:
1, described combination oil seal part adopts exterior seal ring and inner seal ring, the two-side sealing of realization to body hole inwall and running shaft, can prevent that oil liquid leakage from going out, can prevent again extraneous dust foreign material intrusion internal body, and can be for different operating modes, exterior seal ring and inner seal ring are adopted respectively to different materials and shape, be conducive to guarantee sealing effect separately.
2, the spring of described combination oil seal part is uniformly distributed along exterior seal ring bottom circumferential surface, is being better than the radial spring of existing oil seal aspect Compensation oil seal pressure and wearing and tearing.
3, described combination oil seal part can significantly improve sealing effect and the working life of oil seal, and economic benefit is very remarkable.
Accompanying drawing explanation
By the description of embodiment being carried out below in conjunction with accompanying drawing, above and other object of the present utility model and feature will become apparent, wherein:
Fig. 1 is the sectional view after the oil seal of prior art assembles.
Fig. 2 is the sectional view of the oil seal of the prior art in Fig. 1.
Fig. 3 is the sectional view after the utility model embodiment's combination oil seal part assembles.
Fig. 4 is the sectional view of the combination oil seal part in Fig. 3.
Embodiment
Below, with reference to accompanying drawing, describe embodiment of the present utility model in detail.
Fig. 3 shows the sectional view after the utility model embodiment's combination oil seal part assembling.As shown in Figure 3, the utility model embodiment's combination oil seal part 100 is arranged in the body hole consisting of running shaft 400, body 300 and gland 200.
Fig. 4 shows the sectional view of the combination oil seal part 100 in Fig. 3.As shown in Figure 4, combination oil seal part 100 comprises exterior seal ring 110, inner seal ring 120 and spring 130.Wherein, spring 130 is supported on the bottom circumferential surface of exterior seal ring 110.Even for guaranteeing the suffered precompression of combination oil seal part 100, spring 130 is uniformly distributed along the bottom circumferential surface of exterior seal ring 110.Preferably, the quantity of spring 130 is at least three, no more than six.
The outer circumference face of exterior seal ring 110 is provided with seal ring 111.Preferably, at least two seal rings can be set, for example, in the present embodiment, seal ring 111 is made as two, is respectively 111a and 111b, is evenly distributed on the outer circumference face of exterior seal ring 110.
The inside circumference face of inner seal ring 120 is provided with primary seal lip 121 and secondary sealing lip 122.Preferably, in the present embodiment, primary seal lip 121 is located at the side away from spring 130, and secondary sealing lip 122 is located at the side near spring 130.
The inside circumference face of exterior seal ring 110 and the outer circumference face of inner seal ring 120 are fitted mutually, utilize the contact between seal ring inclined-plane to realize sealing, and the relative sliding in utilizing in addition between the inclined-plane of exterior seal ring is realized wear compensation.For different operating mode demands, exterior seal ring 110 and inner seal ring 120 can consist of different materials, are conducive to guarantee good sealing effect.
In the present embodiment, the material of exterior seal ring 110 is urethane rubber, and the material of inner seal ring 120 is teflon, but the utility model is not limited to this.It should be appreciated by those skilled in the art that and can also adopt other materials that can play seal action, and these materials all fall into protection domain of the present utility model.
Below, detailed description the utility model embodiment's assembling and working procedure.
As shown in Figure 3, combination oil seal part 100 is arranged in body hole, spring 130 is arranged on the directional post of gland 200 and distributes along even circumferential, the original length that should guarantee all springs during installation must be consistent, thereby all springs decrement is vertically consistent, while avoiding 100 precompression of combination oil seal part, is pressed partially.During work, spring 130 auto-compensation contact and wear extenies, can guarantee for a long time that the contact of exterior seal ring 110 and 120 pairs of each sealing surfaces of inner seal ring is constant, thereby the sealing effect of combination oil seal part 100 can not declined.
Gland 200 is compressed on body 300, the axial pressure that spring 130 provides is extruded exterior seal ring 110 and inner seal ring 120 to deform, thereby make seal ring 111a on exterior seal ring 110 and 111b and body hole inwall be interference fit, form static seal effect.Meanwhile, the upper end of inner seal ring 120 is adjacent to the body hole inwall of body 300, is interference fit; The upper end of exterior seal ring 110 and body hole inwall should keep certain interval, and preferably, described gap is in 4mm left and right.During work, seal ring 111a and 111b utilize the radial pressure of body hole inwall and amount of deformation, prevent that the fluid in body from letting out along body hole inwall, and prevent that extraneous water and impurity from entering internal body along body hole inwall.
Meanwhile, the axial pressure that the primary seal lip 121 of inner seal ring 120 and secondary sealing lip 122 provide because of spring 130 is held running shaft 400 tightly, is interference fit, forms motive sealing effect.During work, primary seal lip 121 is utilized the radial pressure of running shaft 400 and amount of deformation, prevents that the fluid in body from letting out along body hole inwall; Secondary sealing lip 122 utilizes the radial pressure of running shaft 400 and amount of deformation, prevents that extraneous water and impurity from entering internal body along body hole inwall.
In the present embodiment, the sectional shape of exterior seal ring 110 is right-angled trapezium, and the sectional shape of inner seal ring 120 is irregular polygon, but the utility model is not limited to this.The sectional shape of exterior seal ring 110 and inner seal ring 120, lip limit shape and size, all need to be adjusted accordingly to guarantee to realize stable static seal and motive sealing effect according to different operating modes.It should be appreciated by those skilled in the art that any modification of for these reasons the present embodiment being made, all fall into protection domain of the present utility model.
The utility model has increased substantially reliability and the working life of oil sealing, and economic benefit very significantly also can be promoted the use of, and gathers around and has broad application prospects.
Although described by reference to the accompanying drawings embodiment of the present utility model, those skilled in the art, in the situation that not departing from principle of the present utility model and spirit, can carry out various possible distortion and modification to embodiment.Therefore, protection domain of the present utility model should be as the criterion with the scope being defined in claims.
Claims (6)
1. a combination oil seal part, it is characterized in that: described combination oil seal part comprises exterior seal ring, inner seal ring and spring, wherein, the outer circumference face of exterior seal ring is provided with seal ring, the inside circumference face of inner seal ring is provided with primary seal lip and secondary sealing lip, spring supporting is on the circumferential surface of the bottom of exterior seal ring and axial pressure is provided, and the inside circumference face of exterior seal ring and the outer circumference face of inner seal ring are connected to each other.
2. combination oil seal part as claimed in claim 1, is characterized in that: described seal ring is at least two and is evenly distributed on the outer circumference face of exterior seal ring.
3. combination oil seal part as claimed in claim 1, is characterized in that: described spring is at least three and be uniformly distributed along the bottom circumferential surface of exterior seal ring.
4. combination oil seal part as claimed in claim 1, is characterized in that: described exterior seal ring and inner seal ring consist of different materials respectively.
5. combination oil seal part as claimed in claim 1, is characterized in that: described exterior seal ring is made by urethane rubber.
6. combination oil seal part as claimed in claim 1, is characterized in that: described inner seal ring is made by teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444132.4U CN203421173U (en) | 2013-07-24 | 2013-07-24 | Combined oil sealing piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444132.4U CN203421173U (en) | 2013-07-24 | 2013-07-24 | Combined oil sealing piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203421173U true CN203421173U (en) | 2014-02-05 |
Family
ID=50020272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444132.4U Expired - Lifetime CN203421173U (en) | 2013-07-24 | 2013-07-24 | Combined oil sealing piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203421173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227898A (en) * | 2018-09-21 | 2019-01-18 | 缪心怡 | A kind of granular polystyrene partition plate automatic forming die |
-
2013
- 2013-07-24 CN CN201320444132.4U patent/CN203421173U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227898A (en) * | 2018-09-21 | 2019-01-18 | 缪心怡 | A kind of granular polystyrene partition plate automatic forming die |
| CN109227898B (en) * | 2018-09-21 | 2020-05-26 | 深圳市至合实业有限公司 | Automatic forming die for polyphenyl particle partition board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |