CN205592393U - A metal framework PTFE sealing member for rotation axis - Google Patents
A metal framework PTFE sealing member for rotation axis Download PDFInfo
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- CN205592393U CN205592393U CN201521021748.6U CN201521021748U CN205592393U CN 205592393 U CN205592393 U CN 205592393U CN 201521021748 U CN201521021748 U CN 201521021748U CN 205592393 U CN205592393 U CN 205592393U
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- ptfe
- metal
- sealing ring
- ring
- support ring
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Abstract
The utility model discloses a metal framework PTFE sealing member for rotation axis. It comprises the outer skeleton of metal, PTFE elasticity sealing ring, metal inner frame support ring and oil -proof elastic rubber gasket piece. Adopt the opposite sealing ring of making by polytetrafluoroethylene of two orientation as main sealing unit, with two metal inner frames as supporting, the deformability that utilizes the oil -proof elastic rubber gasket piece simultaneously passes through interference fit's mode and fixes into a whole with all parts. This sealing member has excellent self -lubricating nature, corrosion resistance and aging resistance, not only is applicable to the sealed of grease class liquid, also can play good sealed effect to the aqueous solution and dust. Not only be applicable to low -speed low pressure seal, also have good sealed effect under high -speed high -pressure condition.
Description
Technical field
This utility model belongs to technical field of sealing technology, relates to rotation axis seal technology.This utility model relates to by metal bone
Frame as supporting, PTFE as the combination seal of sealing lip, its sealing property is reliable, service life length, easy for installation, corrosion resistant
Erosion property is good, interchangeability is good, is particularly well-suited to the mixing roll of all kinds of high and low rotating speed, rotary separator, electromotor etc. to seal request
Higher situation.
Background technology
Rotation shaft seal is commonly called oil sealing, the composition of existing oil sealing generally include flexible rubber lip, skeleton and
Spring, by flexible rubber lip and seal shaft interference fit, spring provides stable radial force, and rotary shaft is produced and holds tightly by sealing lip
Power is in case stopping leak dew, and secondary lip prevents external dust from invading.
General oil sealing is point due to lip, and material is rubber, therefore bearing capacity is poor, easy to wear, and corrosion-resistant,
Easily ageing failure.On-line velocity is taller and bigger in 15m/s simultaneously, when pressure is more than 0.05MPa, belongs to the high speed and high pressure shape of oil sealing
State, general oil sealing working life when high-voltage high-speed is short, poor reliability.Simultaneously because the material character of rubber, it is not suitable for close
Water shutoff medium solution.
PTFE i.e. politef is a kind of self-lubricating material, has the low frictional properties of excellence, the most also has well
Corrosion resistance, thermostability, be applicable to the sealing of multi-solvents, and politef be permissible as a kind of elastomeric material itself
Enclasping force required for sealing is provided.
Utility model content
This utility model purpose is to provide a kind of metallic framework PTFE seal, and tool has good wearability and self-lubricating
Property, still there is under high-voltage high-speed good service life.Encapsulant PTFE has good corrosion resistance simultaneously, not only may be used
For various oils, aliphatic radical lubricant, it is also possible to seal aqueous medium solvent and dusting solid, sealing effectiveness is excellent.
This utility model be the technical scheme is that
A kind of metallic framework PTFE seal, by metal purchasing ore, PTFE elastic sealing ring, metal interior skeleton support ring and
Gum elastic pad forms.Resilient rubbber cushion sheet is placed under the PTFE elastic sealing ring on upper strata；Two-layer is had under gum elastic pad
Metal interior skeleton support ring is played a supporting role, and accompanies lower floor's PTFE elastic sealing ring in double layer of metal inner frame support ring；On
Layer PTFE elastic sealing ring, gum elastic pad, upper strata metal interior skeleton support ring, lower floor's PTFE elastic sealing ring, lower floor's gold
Belong to inner frame support ring by order is placed from top to bottom after, with metal purchasing ore it wrapped up and carry out interference tight fit, making institute
Parts are had to form one.
The sealing member related in this utility model, the PTFE elastic sealing ring material of use is politef or changes
Property polytetrafluoroethylmaterial material.Using two panels PTFE elastic sealing ring, it is placed towards on the contrary.
Take interference fit between PTFE elastic sealing ring, metallic framework support ring and gum elastic pad, utilize elasticity
The deformability of rubber sheet gasket is solid with metal purchasing ore by PTFE elastic sealing ring, metallic framework support ring, gum elastic pad
Surely an entirety is become.
Metal purchasing ore, PTFE elastic sealing ring, metal interior skeleton support ring and gum elastic pad internal-and external diameter are concentric.
The beneficial effects of the utility model are: this sealing member utilizes that PTFE wearability is good, have self lubricity, ageing properties
Good, the most salable oil, lipid solvent the most salable aqueous medium solvent and dust.The elasticity simultaneously utilizing PTFE self directly carries
For the enclasping force needed for sealing, simple in construction, good airproof performance, service life is long.
Accompanying drawing explanation
Fig. 1: metallic framework PTFE seal structure chart
Wherein: 1. metal purchasing ore；2. PTFE elastic support ring；3. metal interior skeleton support ring；4. gum elastic
Pad.
Fig. 2: PTFE elastic sealing ring structure chart
Fig. 3: metal interior skeleton supporting ring structure figure
Fig. 4: gum elastic gasket construction figure.
Detailed description of the invention
Embodiment:
The design reference standard of metal purchasing ore (1) and metal interior skeleton support ring (3) is GB/T9877.3-1998(" rotation
Rotating shaft lip-type packing physical dimension series Part III: assembled rotary shaft lip seal "), processing technique is as follows:
Metal purchasing ore (1): the first step, cutting steel plate obtains circular piece；Second step, rolling circular steel plate border makes it
It is molded into " Qian " type part；3rd step, in the middle of cutting " Qian " type part, unnecessary part makes it be molded into annular element；4th step, turning
Processing obtains metal purchasing ore (1).
Metal interior skeleton support ring (3): the first step, Cutting Steel bar obtains formulating thickness circular piece；Second step, turning circle
Shape part internal diameter obtains necessary requirement internal-and external diameter becket；3rd step, turning goes out chamfering.
PTFE elastic sealing ring (2) processing technique:
Politef formula is added mould, under certain temperature and pressure, processes certain time.The semi-finished product that will obtain
Edge turning, to formulating size, obtains PTFE elastic sealing ring (2).
Gum elastic pad (4) processing technique:
Add rubber in a mold, under certain temperature and pressure, process certain time.The product formulating size it is cut into cut-off knife
Product, obtain gum elastic pad (4).
The packaging technology of metallic framework PTFE seal ring (Fig. 1):
By Fig. 1 order by metal PTFE elastic sealing ring (2), metal interior skeleton support ring (3) and gum elastic pad (4)
It is assembled in metal purchasing ore (1) with manual mode of operation and becomes semi-finished product, then metal purchasing ore (1) is put in frock and detain
Pressure compacting.After taking-up, edge is carried out turning, so that the external diameter of metal purchasing ore (1), thickness, chamfer dimesion meet technique and want
Ask.So far metallic framework PTFE seal ring completion of processing.
Described above is not to restriction of the present utility model, and this utility model is also not limited to the example above, this technology
The those of ordinary skill in field, in essential scope of the present utility model, the change made, retrofits, adds or replaces, all should belong to
In protection domain of the present utility model.
Claims (5)
1. the metallic framework PTFE seal for rotary shaft, it is characterised in that close by metal purchasing ore (1), PTFE elasticity
Seal ring (2), metal interior skeleton support ring (3) and gum elastic pad (4) composition；The PTFE elastic sealing ring (2) on upper strata is transferred
Put gum elastic pad (4)；Double layer of metal inner frame support ring (3) is had to play a supporting role under gum elastic pad (4), two-layer
Metal interior skeleton support ring (3) accompanies lower floor's PTFE elastic sealing ring (2)；Upper strata PTFE elastic sealing ring (2), gum elastic
Pad (4), upper strata metal interior skeleton support ring (3), lower floor's PTFE elastic sealing ring (2), lower metal inner frame support ring (3)
After order is placed from top to bottom, with metal purchasing ore (1) it wrap up and carry out interference tight fit, making all parts formation one
Body.
Sealing member the most according to claim 1, it is characterised in that the material of PTFE elastic sealing ring (2) is polytetrafluoroethyl-ne
Alkene or modified Teflon.
Sealing member the most according to claim 1, it is characterised in that using two panels PTFE elastic sealing ring (2), it is towards phase
Instead.
Sealing member the most according to claim 1, it is characterised in that PTFE elastic sealing ring (2), metal interior skeleton support ring
(3) and taking interference fit between gum elastic pad (4), the deformability utilizing gum elastic pad (4) is elastic by PTFE
Sealing ring (2), metal interior skeleton support ring (3), gum elastic pad (4) and metal purchasing ore (1) are fixed into an entirety.
Sealing member the most according to claim 1, it is characterised in that metal purchasing ore (1), PTFE elastic sealing ring (2), gold
Belong to inner frame support ring (3) and gum elastic pad (4) internal-and external diameter is concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021748.6U CN205592393U (en) | 2015-12-10 | 2015-12-10 | A metal framework PTFE sealing member for rotation axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021748.6U CN205592393U (en) | 2015-12-10 | 2015-12-10 | A metal framework PTFE sealing member for rotation axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205592393U true CN205592393U (en) | 2016-09-21 |
Family
ID=56926718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521021748.6U Active CN205592393U (en) | 2015-12-10 | 2015-12-10 | A metal framework PTFE sealing member for rotation axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205592393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691685A (en) * | 2018-08-01 | 2018-10-23 | 台州环洋机电有限公司 | A kind of T-type piston on general gasoline engines |
-
2015
- 2015-12-10 CN CN201521021748.6U patent/CN205592393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691685A (en) * | 2018-08-01 | 2018-10-23 | 台州环洋机电有限公司 | A kind of T-type piston on general gasoline engines |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |