CN209540038U - The compound auxiliary seal ring of mechanical seal - Google Patents
The compound auxiliary seal ring of mechanical seal Download PDFInfo
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- CN209540038U CN209540038U CN201822141565.8U CN201822141565U CN209540038U CN 209540038 U CN209540038 U CN 209540038U CN 201822141565 U CN201822141565 U CN 201822141565U CN 209540038 U CN209540038 U CN 209540038U
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- ring
- opening slot
- shaped opening
- shaped
- cladding circle
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Abstract
The compound auxiliary seal ring of the utility model mechanical seal, by cladding circle (1) and O-shaped rubber ring (2) is compound constitutes, the rectangular in cross-section of cladding circle (1), the outer ring surface (10a) that section is provided on cladding circle (1) is cambered surface, inner ring surface (10b) is cambered surface, vertical end face (10c) is the c-shaped opening slot (10) of plane, O-shaped rubber ring (2) is placed in the c-shaped opening slot (10) opened up on cladding circle (1), and the outer ring surface (10a) of the section periphery of O-shaped rubber ring (2) and the c-shaped opening slot (10), inner ring surface (10b), vertical end face (10c) fitting；It can realize the axial seal under radial compression sealing and pressure effect, be suitable for pressure height, the dynamic sealing and static seal occasion of operating condition of the medium containing the complexity such as particle, corrosivity.
Description
Technical field
The utility model relates to the auxiliary seal rings that mechanical seal uses, that is, are used for the rotating ring and rotating ring of mechanical seal
The sealing ring used between seat, between stationary ring and stationary seat.
Technical background
Between the rotating ring and rotating seat of mechanical seal, auxiliary seal ring is equipped between stationary ring and stationary seat, which is generally
Homogenous material is made.
The auxiliary seal ring that stationary ring uses mainly has O-ring seals, teflin ring, soft graphite circle；
The sliding sealing ring that uses of compensation ring mainly have O-ring seals, polytetrafluoroethylene (PTFE) v shaped ring, spring-actuated sealing ring,
Polytetrafluoroethylene (PTFE) coats O-ring seals.
O-ring seals may not apply to the operating condition containing granule medium in use, and attrition is more serious, and in medium
O-ring seals can be squeezed out to gap direction in the biggish situation of lateral pressure, reciprocal sliding when O-ring seals are applied to compensation ring
Shifting is easy to appear torsion cutting, influences service life；
Teflin ring has processing is rectangular to be applied to stationary ring, and processing forming V-shape is applied to compensation ring, is processed into
O shape is for stationary ring and compensation ring.But because its own is high without elasticity, hardness, it is also easy to produce compression set, therefore can only one
Secondary property is installed and used；
Spring-actuated sealing ring is mainly used in low temperature situation, itself sealing effect is in use without significant advantage, and one
Denier medium content is complicated, and spring corrodes, then seal failure；
The temperature applicable range of flexible graphite sealing ring is wider, excellent corrosion resistance, there is good flexibility, resilience, gas
Close property, but it is not wear-resisting, sliding sealing ring can not be made and used, needed to frequently replace；
Polytetrafluoroethylene (PTFE) coats O-ring seals, is a kind of complete clad type O-ring seals, there is excellent chemical stability
With oil resistant, solvent resistant, anti-aging, heat-resisting, cold resistance, gas permeability is low, but poor flexibility, and the coefficient of expansion is big, there is cold flow.
Above-mentioned various sealing rings are influenced by the operating conditions such as media chemistry and pressure, temperature in use, respectively there is feature
With deficiency, defect will affect service life, causes to fail using middle sealing ring, influences the operation of equipment.
Utility model content
It is good that the purpose of the utility model is to provide a kind of sealing effects, the compound auxiliary of mechanical seal with long service life
Sealing ring, sufficiently to meet the use of the operating conditions such as various media chemistries and pressure, temperature.
The utility model sealing ring, by circular ring shape cladding circle 1 and O-shaped rubber ring 2 is compound constitutes；
The rectangular in cross-section of circular ring shape cladding circle 1, the outer ring surface 10a that section is provided on cladding circle 1 is cambered surface, inner ring surface
10b is cambered surface, the c-shaped opening slot 10 that vertical end face 10c is plane；
The corresponding c-shaped opening slot 10, the part periphery 1a of cladding circle 1 are the outer ring with the c-shaped opening slot 10
Face 10a corresponds to consistent cambered surface；The part inner headed face 1b of cladding circle 1 is the inner ring surface 10b corresponding one with the c-shaped opening slot 10
The cambered surface of cause；
O-shaped rubber ring 2 is placed in the c-shaped opening slot 10 opened up on cladding circle 1, and the section periphery of O-shaped rubber ring 2
It is bonded with the outer ring surface 10a of the c-shaped opening slot 10, inner ring surface 10b, vertical end face 10c.
The cladding circle 1 is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE) (PTFE), perfluoroethylene-propylene (FEP), gather
Vinyl fluoride (PVF).
The O-shaped rubber ring 2 is fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubber
Glue, nitrile rubber etc. are made.
The utility model structure is simple, easily manufactured, it can be achieved that radial compression sealing and the axial seal under pressure effect.
C-shaped opening slot 10 can be selected towards installing and using and arbitrarily more according to applying working condition, according to the characteristic of the sealed medium of contact
Change the O-shaped rubber ring 2 of unlike material, it is high to be suitable for pressure, the dynamic sealing of operating condition of the medium containing complexity such as particle, corrosivity and
Static seal occasion.
The utility model compound seal ring, when bearing uniaxial pressure effect, i.e., c-shaped opening slot 10 is towards pressure medium
The c-shaped opening slot 10 of action direction, cladding circle 1 can be pressurized opening, can push O-shaped rubber ring 2 to c-shaped opening under pressure
The vertical end face 10c of slot 10 fits closely O-shaped rubber ring 2 and the vertical end face 10c of c-shaped opening slot 10, in wrap 1 and O shape rubber
Under intrinsic decrement effect between cushion rubber 2, O-shaped rubber ring 2 and the outer ring surface 10a and inner ring surface 10b of c-shaped opening slot 10 are close
Fitting, it is O-shaped rubber ring 2 that there are gap k1, k2 between the vertical end face 10c and outer ring surface 10a and inner ring surface 10b of c-shaped opening slot 10
Elastic deformation when compression provides deformation space；Under the action of uniaxial pressure, O-shaped rubber ring and cladding circle 1 closely patch can be made
Conjunction forms sealing surface, to realize the axial seal of radial seal and pressure action direction.
The utility model compound seal ring installs and uses state referring to shown in attached drawing 3,4.
The utility model compound seal ring is suitable for the compensation ring sealing of mechanical seal and stationary ring sealing uses.
When 10 opening direction of c-shaped opening slot of cladding circle 1 is towards pressure medium action direction, referring to shown in attached drawing 3, it is situated between
Matter pressure pushes O-shaped rubber ring 2 to squeeze to the vertical end face 10c of c-shaped opening slot 10 conducive to the opening of c-shaped opening slot 10, is formed axial
Sealing.
When sealed medium when containing particle, 10 opening direction of c-shaped opening slot that cladding circle 1 may be selected is made backwards to pressure medium
With direction, enter in the c-shaped opening slot 10 of cladding circle 1 referring to particle shown in attached drawing 4, is effectively isolated, avoid sealing ring with it is close
The auxiliary seal ring as caused by particle insertion fails between sealing end face.
The utility model compound seal ring is adopted using the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material
Cooperated with c-shaped opening slot 10 and O-shaped rubber ring 2,1 wearability of fluoroplastics material wrap is good, and has good self-lubrication, such as
Polytetrafluoroethylene (PTFE) is 0.1 to the coefficient of friction of steel, and rubber is 0.9 to the coefficient of friction of steel, so 1 coefficient of friction of wrap is small
Heat production is low, reduces the operating temperature of the O-shaped rubber ring 2 in wrap 1, service life is extended；
The utility model compound seal ring is adopted using the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material
Cooperated with c-shaped opening slot 10 and O-shaped rubber ring 2, the wrap 1 and O-shaped rubber ring 2 of fluoroplastics material are reusable, fluorine modeling
The drawbacks of wrap 1 of material material has higher hardness, can avoid the reciprocal torsional shear of O-shaped rubber ring 2 and attrition.
The utility model compound seal ring is adopted using the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material
Cooperated with c-shaped opening slot 10 and O-shaped rubber ring 2, utilizes the heat-resisting, cold-resistant of wrap 1 of fluoroplastics material, oil resistant, wear-resisting, resistance to
The characteristics such as chemical mediator corrosion；The good resilience performance of O-shaped rubber ring 2 is utilized simultaneously, and the wrap 1 for making up fluoroplastics material is low
Compression set performance；Both the sealing performance of O-shaped rubber ring had been maintained, while it is heat-resisting, cold-resistant, resistance to be provided with fluoroplastics material
The characteristics such as oily, wear-resisting, resistant to chemical media corrosion.
The utility model compound seal ring is adopted using the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material
Cooperated with c-shaped opening slot 10 and O-shaped rubber ring 2, combines the wearability of fluoroplastics material and the tracing ability of O-shaped rubber ring, make
The tracing ability of this compound seal ring is better than the sealing ring that fluoroplastics material is used alone, and service life is better than exclusive use O shape
Seal with elastometic washer circle, improving sealing performance has remarkable result.
The material of O-shaped rubber ring 2 in the utility model wrap 1 is determined according to working condition, and it is main that material can be selected
There are fluorubber, silicon rubber, EP rubbers, neoprene, perfluorinated rubbers.
With mechanical seal high temperature resistant, high pressure resistant, resistant to chemical media corrosion and expensive perfluorinated O-shaped rubber ring is
Example, the utility model compound seal ring both can guarantee sealing performance, can reduce again in specific auxiliary seal installation space
The usage amount of perfluorinated rubbers raw material, so that cost be greatly lowered.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram.
Fig. 2 is 1 structural schematic diagram of the utility model wrap.
Fig. 3 is that the utility model installs and uses state diagram.
Fig. 4 is that the utility model installs and uses state diagram.
Specific embodiment
The utility model sealing ring, by circular ring shape cladding circle 1 and O-shaped rubber ring 2 is compound constitutes；
The rectangular in cross-section of circular ring shape cladding circle 1, the outer ring surface 10a that section is provided on cladding circle 1 is cambered surface, inner ring surface
10b is cambered surface, the c-shaped opening slot 10 that vertical end face 10c is plane.
The corresponding c-shaped opening slot 10, the part periphery 1a of cladding circle 1 are the outer ring with the c-shaped opening slot 10
Face 10a corresponds to consistent cambered surface；The part inner headed face 1b of cladding circle 1 is the inner ring surface 10b corresponding one with the c-shaped opening slot 10
The cambered surface of cause.
O-shaped rubber ring 2 is placed in the c-shaped opening slot 10 opened up on cladding circle 1, and the section periphery of O-shaped rubber ring 2
It is bonded with the outer ring surface 10a of the c-shaped opening slot 10, inner ring surface 10b, vertical end face 10c.
The cladding circle 1 is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE) (PTFE), perfluoroethylene-propylene (FEP), gather
Vinyl fluoride (PVF)；
The O-shaped rubber ring 2 is fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubber
One of glue, nitrile rubber are made.
Claims (1)
1. the compound auxiliary seal ring of mechanical seal, it is characterized in that compound by circular ring shape cladding circle (1) and O-shaped rubber ring (2)
It constitutes；
The rectangular in cross-section of circular ring shape cladding circle (1), the outer ring surface (10a) that section is provided on cladding circle (1) is cambered surface, inner ring
Face (10b) is cambered surface, the c-shaped opening slot (10) that vertical end face (10c) is plane；
The corresponding c-shaped opening slot (10), the periphery (1a) of cladding circle (1) are partially and the c-shaped opening slot (10)
The corresponding consistent cambered surface of outer ring surface (10a)；The inner headed face (1b) of cladding circle (1) is partially interior with the c-shaped opening slot (10)
The corresponding consistent cambered surface of anchor ring (10b)；
O-shaped rubber ring (2) is placed in the c-shaped opening slot (10) opened up on cladding circle (1), and outside the section of O-shaped rubber ring (2)
Disc is bonded with the outer ring surface (10a) of the c-shaped opening slot (10), inner ring surface (10b), vertical end face (10c)；
The cladding circle (1) is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE), perfluoroethylene-propylene, polyvinyl fluoride；
The O-shaped rubber ring (2) be fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubbers,
One of nitrile rubber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141565.8U CN209540038U (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141565.8U CN209540038U (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209540038U true CN209540038U (en) | 2019-10-25 |
Family
ID=68264941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822141565.8U Active CN209540038U (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209540038U (en) |
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2018
- 2018-12-20 CN CN201822141565.8U patent/CN209540038U/en active Active
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