CN207554778U - A kind of plunger sealing device - Google Patents
A kind of plunger sealing device Download PDFInfo
- Publication number
- CN207554778U CN207554778U CN201721456343.4U CN201721456343U CN207554778U CN 207554778 U CN207554778 U CN 207554778U CN 201721456343 U CN201721456343 U CN 201721456343U CN 207554778 U CN207554778 U CN 207554778U
- Authority
- CN
- China
- Prior art keywords
- sealing
- plunger
- oil
- sealing ring
- sealing device
- 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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- Sealing Devices (AREA)
Abstract
The utility model belongs to plunger sealing device technical field, refers in particular to a kind of plunger sealing device, and including cylinder body and the plunger being movably arranged in inner chamber of cylinder block, sealing device is additionally provided between inner chamber of cylinder block and plunger；The sealing device includes several sealing rings and the oil sealing being arranged between sealing ring and sealing ring, several sealing rings and oil sealing alternately form the sealing channel for plunger movement, and, it is cooperated between sealing ring and oil sealing by protrusion and recess, the utility model provides a kind of simple in structure and stable, sealing effect is good, and resistance is small, the plunger sealing device of service life length.
Description
Technical field
The utility model belongs to plunger sealing device technical field, refers in particular to a kind of plunger sealing device.
Background technology
The reciprocating motion of plunger is widely used in various the equipment or instruments as structure most common in mechanical structure
On.The plunger sealing structure occurred in the market filler makes it with plunger surface and interior is in close contact by compressing mostly and
Sealing, leakage rate and frictional force are closely related with pressing force.In the case of there is leakage, can only integral replacing solve
Certainly problem, situation seriously can also damage plunger.And under pressing force effect, filler is contacted with plunger and tank surface generation should
Power, the stress are gradually reduced inwards from filler installation entrance, and distribution of contact is uneven, can not control, multiple reasons shorten
Service life.
Invention content
The purpose of this utility model is to provide a kind of simple in structure and stablizes, and sealing effect is good, and resistance is small, and service life is long
Plunger sealing device.
What the purpose of this utility model was realized in：
A kind of plunger sealing device, including cylinder body and the plunger being movably arranged in inner chamber of cylinder block, inner chamber of cylinder block and column
Sealing device is additionally provided between plug；The sealing device include several sealing rings and be arranged on sealing ring and sealing ring it
Between oil sealing, several sealing rings and oil sealing alternately form the sealing channel for plunger movement, also, between sealing ring and oil sealing
It is cooperated by protrusion and recess.
At least two oil sealings are provided between the sealing ring and sealing ring, also by raised and recessed between oil sealing and oil sealing
It falls into and cooperates.
The upper surface of the oil sealing raises up to form oil sealing protruding portion, and the lower face of oil sealing is recessed inwardly, and to form oil sealing recessed
Concave portion, and oil sealing protruding portion and oil sealing recessed portion are adapted；The sealing ring is provided in the oil sealing protruding portion end face that is in contact
Sealing ring recessed portion, sealing ring are provided with sealing ring protruding portion in the oil sealing recessed portion end face that is in contact.
The stepped part for limiting the sealing device is formed in the inner chamber of cylinder block, and is detachably set on cylinder body port
There is outer end cap, the sealing device is provided between stepped part and outer end cap.
The outer end cap and cylinder body port are connected through a screw thread.
The utility model is prominent and beneficial compared with prior art to be had the technical effect that：
1st, the sealing device of the utility model include several sealing rings and be arranged on sealing ring and sealing ring it
Between oil sealing, the sealing of plunger is carried out by alternate sealing ring and oil sealing, sealing ring keeps sealing, and oil sealing is reaching sealing effect
While fruit, reduce the resistance of plunger, also, cooperate between sealing ring and oil sealing by protrusion and recess, pass through the knot
Structure avoids being subjected to displacement between sealing ring and oil sealing, simple in structure, solves unlike material to plunger stress different problems, not only
Sealing effect is improved, and does not influence service life.
2nd, the sealing device is provided between the stepped part and outer end cap of the utility model, by adjusting stepped part
Spacing between outer end cap so that the sealing device in plunger will not be subjected to displacement, simple in structure, and in long-time service
In the process, sealing ring, oil sealing have abrasion, by changing the spacing between stepped part and outer end cap so that oil sealing relative deformation
And backlash compensation is carried out, substantially prolong service life.
3rd, it is cooperated between the sealing ring and oil sealing of the utility model by raised and recess, protrusion and recess are not only right
It in being equipped with position-limiting action, is easily installed, and guiding role, power is played when sealing device squeezes into row backlash compensation
It is effectively controlled so that sealing effect is more preferable.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the internal structure schematic diagram of the utility model；
Fig. 3 is enlarged structure schematic diagram at the A of Fig. 2；
Fig. 4 is one of configuration schematic diagram of the utility model；
Fig. 5 is the two of the configuration schematic diagram of the utility model；
Fig. 6 is the three of the configuration schematic diagram of the utility model；
Fig. 7 is one of oil enveloping structure schematic diagram of the utility model；
Fig. 8 is the two of the oil enveloping structure schematic diagram of the utility model.
In figure：1- cylinder bodies；11- stepped parts；12- seals channel；2- sealing devices；21- sealing rings；
211- sealing ring lug bosses；212- sealing ring recessed portions；22- oil sealings；221- oil sealing protruding portions；
222- oil sealing recessed portions；3- outer end caps；4- plungers.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, as shown in Fig. 1-8：
A kind of plunger sealing device, including cylinder body 1 and the plunger 4 being movably arranged in 1 inner cavity of cylinder body, 1 inner cavity of cylinder body
Sealing device 2 is additionally provided between plunger 4；The sealing device 2 includes several sealing rings 21 and is arranged on sealing ring
Oil sealing 22 between 21 and sealing ring 21, sealing ring 21 use hard material, several sealing rings 21 and oil sealing 22 are alternately formed
For the sealing channel 12 that plunger 4 moves, sealing ring 21 keeps sealing, while oil sealing 22 reaches sealing effect, reduces plunger 4
Resistance, also, cooperated between sealing ring 21 and oil sealing 22 by protrusion and recess, 21 He of sealing ring is avoided with this configuration
It is subjected to displacement between oil sealing 22, it is simple in structure, unlike material is solved to 4 stress different problems of plunger, not only improves sealing
Effect, and do not influence service life.
At least two oil sealings 22, preferably two oil sealings 22, oil sealing are provided between the sealing ring 21 and sealing ring 21
It cooperates between 22 and oil sealing 22 also by protrusion and recess, prevents from being subjected to displacement between the two, ensure the stability of structure.
The upper surface of the oil sealing 22 raises up to form oil sealing protruding portion 221, and the lower face of oil sealing 22 is recessed inwardly shape
Into oil sealing recessed portion 222, and oil sealing protruding portion 221 and oil sealing recessed portion 222 are adapted；The sealing ring 21 is protruded in oil sealing
The end face that is in contact of portion 221 is provided with sealing ring recessed portion 212, and sealing ring 21 is provided in the end face that is in contact of oil sealing recessed portion 222
Sealing ring protruding portion 211.
The stepped part 11 for limiting the sealing device 2 is formed in 1 inner cavity of cylinder body, and removable on 1 port of cylinder body
Unload and be provided with outer end cap 3, preferably by threaded connection between 1 port of outer end cap 3 and cylinder body, stepped part 11 and outer end cap 3 it
Between be provided with the sealing device 2, by adjusting the spacing between stepped part 11 and outer end cap 3 so that sealing in plunger 4 dress
Putting 2 will not be subjected to displacement, simple in structure, and during long-time service, and sealing ring 21, oil sealing 22 have abrasion, pass through
Change the spacing between stepped part 11 and outer end cap 3 so that 22 relative deformation of oil sealing simultaneously carries out backlash compensation, and substantially prolonging makes
Use the service life.
It is cooperated between sealing ring 21 and oil sealing 22 by protrusion and recess, protrusion and recess are not only for being equipped with
Position-limiting action is easily installed, and guiding role is played when sealing device 2 squeezes into row backlash compensation, and power obtains effectively
Control so that sealing effect is more preferable.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model
Within the scope of.
Claims (5)
1. a kind of plunger sealing device, including cylinder body (1) and the plunger (4) being movably arranged in cylinder body (1) inner cavity, cylinder body
(1) sealing device (2) is additionally provided between inner cavity and plunger (4)；It is characterized in that：The sealing device (2) is including several
Sealing ring (21) and the oil sealing (22) being arranged between sealing ring (21) and sealing ring (21), several sealing rings (21) and oil
(22) are sealed alternately to form for the mobile sealing channel (12) of plunger (4), also, by convex between sealing ring (21) and oil sealing (22)
It rises and recess cooperates.
2. plunger sealing device according to claim 1, it is characterised in that：The sealing ring (21) and sealing ring (21) it
Between be provided at least two oil sealings (22), between oil sealing (22) and oil sealing (22) also by protrusion and recess cooperate.
3. plunger sealing device according to claim 1 or 2, it is characterised in that：The upper end of the oil sealing (22) faces upward
Oil sealing protruding portion (221) is convexed to form, the lower face of oil sealing (22) is recessed inwardly to form oil sealing recessed portion (222), and oil sealing
Protruding portion (221) and oil sealing recessed portion (222) are adapted；The sealing ring (21) is in contact end face in oil sealing protruding portion (221)
It is provided with sealing ring recessed portion (212), sealing ring (21) is provided with sealing ring and protrudes in oil sealing recessed portion (212) end face that is in contact
Portion (211).
4. plunger sealing device according to claim 1 or 2, it is characterised in that：It is molded in cylinder body (1) inner cavity limited
The stepped part (11) of the position sealing device (2), and detachably it is provided with outer end cap (3), stepped part on cylinder body (1) port
(11) sealing device (2) is provided between outer end cap (3).
5. plunger sealing device according to claim 4, it is characterised in that：The outer end cap (3) and cylinder body (1) port lead to
Cross threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721456343.4U CN207554778U (en) | 2017-11-04 | 2017-11-04 | A kind of plunger sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721456343.4U CN207554778U (en) | 2017-11-04 | 2017-11-04 | A kind of plunger sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554778U true CN207554778U (en) | 2018-06-29 |
Family
ID=62681916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721456343.4U Expired - Fee Related CN207554778U (en) | 2017-11-04 | 2017-11-04 | A kind of plunger sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554778U (en) |
-
2017
- 2017-11-04 CN CN201721456343.4U patent/CN207554778U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191104 |