CN208535155U - A kind of combined sealed device - Google Patents
A kind of combined sealed device Download PDFInfo
- Publication number
- CN208535155U CN208535155U CN201820868423.9U CN201820868423U CN208535155U CN 208535155 U CN208535155 U CN 208535155U CN 201820868423 U CN201820868423 U CN 201820868423U CN 208535155 U CN208535155 U CN 208535155U
- Authority
- CN
- China
- Prior art keywords
- seal
- groove
- fastener
- air bag
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of combined sealed devices, including piston rod, the piston rod is socketed with second seal, second seal is cylinder, and the outer wall of second seal offers multiple grooves, groove is annular, the inner wall of groove is connected with fastener, the inside of first seal is arranged in firm part, the inner wall contact of first seal has second seal, and the inside of fastener offers circular groove, expanding block is provided in circular groove, one end of expanding block is connected with gas tube, gas tube is connected with branched pipe, and one end of gas tube is connected with air bag, air inlet is provided on air bag, and air bag is symmetrical arranged about the central axes of first seal, when the annular groove for thering is water to enter first seal, first expansion sealing strip and the second expansion sealing strip water swelling, extruding gasbag, expand expanding block, to make to fasten Part and the connection of the groove of second seal are even closer, so as to prevent the entrance of water, play the role of sealing.
Description
Technical field
The utility model relates to combined sealed technical field more particularly to a kind of combined sealed devices.
Background technique
Combination sealing is sealing made of being combined by more than two elements.Each element of all combination sealings can be with
Regard dimerous by primary seal and auxiliary seal as, the combination sealing that we usually say is by main seal ring and elastomer
Or plus the sealing structure form that retaining ring and guide ring form, combination sealing advantage be it is compact-sized, save installation space, rub
It is small to wipe resistance, but existing apparatus may generate loosening after a protracted use, makes sealing loosely, gap occur.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and the one kind proposed is combined sealed
Device.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of combined sealed device, including piston rod, the piston rod are socketed with second seal, and second seal is
Cylinder, and the outer wall of second seal offers multiple grooves, groove is annular, and the inner wall of groove is connected with fastener, tightly
The inside of first seal is arranged in firmware, and the inner wall contact of first seal has second seal, and the inside of fastener is opened
Equipped with circular groove, expanding block is provided in circular groove, one end of expanding block is connected with gas tube, and gas tube is connected with branched pipe, and fills
One end of tracheae is connected with air bag, air inlet is provided on air bag, and air bag is symmetrical arranged about the central axes of first seal.
Preferably, the first seal offers annular groove, and the diameter of annular groove is greater than the diameter of piston rod, and annular
The inner wall of the two sides of slot is welded with retainer plate, and the inner wall gluing of retainer plate has air bag.
Preferably, the quantity of the groove and fastener is all four, and groove and fastener correspond, fastener card
It connects in the inside of groove.
Preferably, the side gluing of the annular groove of the first seal has the first expansion sealing strip, the first expansion water-stop
Item contact has air bag, and the vertical gluing of the first expansion sealing strip has the second expansion sealing strip.
Preferably, the fastener is symmetricly set on the two sides of annular groove about the central axes of first seal, and fastens
The width of part is less than the width of annular groove.
The beneficial effects of the utility model are:
When the annular groove for having water to enter first seal, the first expansion sealing strip and the water suction of the second expansion sealing strip are swollen
Swollen, extruding gasbag expands expanding block, so that it is even closer to connect fastener and the groove of second seal, so as to anti-
The entrance of sealing, plays the role of sealing.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of combined sealed device structural profile main view；
Fig. 2 be the utility model proposes a kind of combined sealed device part-structure enlarged drawing.
In figure: 1 first seal, 2 piston rods, 3 fasteners, 4 second seals, 5 expanding blocks, 6 gas tubes, 7 branched pipes,
8 air bags, 9 first expansion sealing strips, 10 second expansion sealing strips, 11 retainer plates.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of combined sealed device, including piston rod 2, piston rod 2 are socketed with second seal 4, the
Two sealing elements 4 are cylinder, and the outer wall of second seal 4 offers multiple grooves, and groove is annular, the inner wall connection of groove
There is a fastener 3, the quantity of groove and fastener 3 is all four, and groove and fastener 3 correspond, and fastener 3 is connected to recessed
The inside of slot, the inside of first seal 1 is arranged in fastener 3, and fastener 3 is symmetrical about the central axes of first seal 1
The two sides of annular groove are set, and the width of fastener 3 is less than the width of annular groove, first seal 1 offers annular groove, ring
The diameter of shape slot is greater than the diameter of piston rod 2, and the inner wall of the two sides of annular groove is welded with retainer plate 11, the inner wall of retainer plate 11
Gluing has air bag 8, and the side gluing of the annular groove of first seal 1 has the first expansion sealing strip 9, and the first expansion sealing strip 9 connects
Touching has air bag 8, and the vertical gluing of the first expansion sealing strip 9 has the second expansion sealing strip 10, and the inner wall contact of first seal 1 has
Second seal 4, and the inside of fastener 3 offers circular groove, and expanding block 5, one end connection of expanding block 5 are provided in circular groove
There is gas tube 6, gas tube 6 is connected with branched pipe 7, and one end of gas tube 6 is connected with air bag 8, is provided with air inlet on air bag 8
Mouthful, and air bag 8 is symmetrical arranged about the central axes of first seal 1.
In the present embodiment, second seal 4 and first seal 1 are all socketed in the outside of piston rod 2, pass through the second sealing
The groove of part 4 and fastener 3 are clamped, so that second seal 4 and first seal 1 be made closely to connect, when there is water to enter first
When the annular groove of sealing element 1,10 water swelling of the first expansion sealing strip 9 and the second expansion sealing strip, so that extruding gasbag 8, makes
Air bag 8 squeezes into gas in expanding block 5, expands expanding block 5, so that the inner wall stretching of fastener 3 is made fastener 3 slightly
Become larger, to connect with the groove of second seal 4 even closer, so as to prevent the entrance of water, plays the role of sealing.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of combined sealed device, including piston rod (2), which is characterized in that the piston rod (2) is socketed with the second sealing
Part (4), second seal (4) is cylinder, and the outer wall of second seal (4) offers multiple grooves, and groove is annular, recessed
The inner wall of slot is connected with fastener (3), fastener (3) setting in the inside of first seal (1), first seal (1) it is interior
Wall contact has second seal (4), and the inside of fastener (3) offers circular groove, is provided in circular groove expanding block (5), expansion
One end of block (5) is connected with gas tube (6), and gas tube (6) is connected with branched pipe (7), and one end of gas tube (6) is connected with gas
Capsule (8) is provided with air inlet on air bag (8), and air bag (8) is symmetrical arranged about the central axes of first seal (1).
2. a kind of combined sealed device according to claim 1, which is characterized in that the first seal (1) opens up
There is annular groove, the diameter of annular groove is greater than the diameter of piston rod (2), and the inner wall of the two sides of annular groove is welded with retainer plate
(11), the inner wall gluing of retainer plate (11) has air bag (8).
3. a kind of combined sealed device according to claim 1, which is characterized in that the groove and fastener (3)
Quantity is all four, and groove and fastener (3) correspond, and fastener (3) is connected to the inside of groove.
4. a kind of combined sealed device according to claim 2, which is characterized in that the ring of the first seal (1)
The side gluing of shape slot has the first expansion sealing strip (9), and the first expansion sealing strip (9) contact has air bag (8), and the first expansion stops
The vertical gluing of water bar (9) has the second expansion sealing strip (10).
5. a kind of combined sealed device according to claim 2, which is characterized in that the fastener (3) is about first
The central axes of sealing element (1) are symmetricly set on the two sides of annular groove, and the width of fastener (3) is less than the width of annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820868423.9U CN208535155U (en) | 2018-06-06 | 2018-06-06 | A kind of combined sealed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820868423.9U CN208535155U (en) | 2018-06-06 | 2018-06-06 | A kind of combined sealed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208535155U true CN208535155U (en) | 2019-02-22 |
Family
ID=65382535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820868423.9U Expired - Fee Related CN208535155U (en) | 2018-06-06 | 2018-06-06 | A kind of combined sealed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208535155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909235A (en) * | 2019-03-14 | 2019-06-21 | 陆挚译 | A kind of special type pipe inner wall precision processing unit |
| CN111457095A (en) * | 2020-05-07 | 2020-07-28 | 王以军 | Double-thread sealing device of water pump turbine |
-
2018
- 2018-06-06 CN CN201820868423.9U patent/CN208535155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909235A (en) * | 2019-03-14 | 2019-06-21 | 陆挚译 | A kind of special type pipe inner wall precision processing unit |
| CN111457095A (en) * | 2020-05-07 | 2020-07-28 | 王以军 | Double-thread sealing device of water pump turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20210606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |