CN210317981U - Combined sealing device for piston of hydraulic cylinder - Google Patents
Combined sealing device for piston of hydraulic cylinder Download PDFInfo
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- CN210317981U CN210317981U CN201921118103.2U CN201921118103U CN210317981U CN 210317981 U CN210317981 U CN 210317981U CN 201921118103 U CN201921118103 U CN 201921118103U CN 210317981 U CN210317981 U CN 210317981U
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Abstract
The utility model relates to a pneumatic cylinder sealing device technical field, a combination sealing device of pneumatic cylinder piston, comprising a cylinder body, the welding of one side of cylinder body has the cylinder cap, and the middle part of cylinder cap has seted up the cavity groove, the inner chamber fixed mounting of cavity groove has the controller, and the top fixed mounting of controller has annotates the liquid hole, first sealed piece has been seted up at the top of cylinder cap one side, and the one end of annotating the liquid hole runs through to the inner chamber of first sealed piece, the fixed cover of opposite side of cylinder body inner chamber has cup jointed first seal cover, and the fixed second seal cover that has cup jointed to be located first seal cover opposite side of cylinder body inner chamber. The first sealing sleeve, the second sealing sleeve, the Y-shaped sealing sleeve and the O-shaped sealing sleeve are mutually matched, so that the interior of the cylinder body is better sealed, the problem that solution in the cylinder body is easy to leak is solved, and the sealing performance of the inner cavity of the cylinder body is improved.
Description
Technical Field
The utility model relates to a pneumatic cylinder sealing device technical field specifically is a combination sealing device of pneumatic cylinder piston.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance, and moves stably, thereby being widely applied to hydraulic systems of various machines.
The problem of inside liquid oil leakage is leading to easily to present pneumatic cylinder sealing device sealing process to the pneumatic cylinder, and then leads to the unable normal use of pneumatic cylinder, and the phenomenon of gas leakage can appear in the inlet port of pneumatic cylinder simultaneously, and then leads to the unable state that keeps for a long time of pneumatic cylinder.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The not enough that provides to above-mentioned background art, the utility model provides a combined sealing device of pneumatic cylinder piston has solved the problem that above-mentioned background art provided.
(II) technical scheme
The utility model provides a following technical scheme: a combined sealing device of a hydraulic cylinder piston comprises a cylinder body, wherein a cylinder cover is welded on one side of the cylinder body, a hollow groove is formed in the middle of the cylinder cover, a controller is fixedly installed in an inner cavity of the hollow groove, a liquid injection hole is fixedly installed in the top of the controller, a first sealing block is formed in the top of one side of the cylinder cover, one end of the liquid injection hole penetrates through an inner cavity of the first sealing block, a first sealing sleeve is fixedly sleeved on the other side of the inner cavity of the cylinder body, a second sealing sleeve positioned on the other side of the first sealing sleeve is fixedly sleeved on the other side of the inner cavity of the cylinder body, a piston rod is movably sleeved on the other side of the cylinder body, one end of the piston rod extends to the inner cavity of the cylinder body, a piston head positioned in the inner cavity of the cylinder body is sleeved on one end of the piston rod in a threaded manner, a, the piston is characterized in that a first annular groove is formed in the middle of the outer surface of the piston sleeve, a second annular groove is formed in one side of the outer surface of the piston sleeve, a Y-shaped sealing sleeve is fixedly sleeved in an inner cavity of the first annular groove, and an O-shaped sealing sleeve is fixedly sleeved in an inner cavity of the second annular groove.
Preferably, the bottom of one side of the cylinder inner cavity is provided with a certain inclination angle, and the top of one side of the cylinder inner cavity is also provided with an inclination angle.
Preferably, one end of the first sealing block is provided with a rubber pad, and the rubber pad is in contact with the inner wall of the liquid injection hole.
Preferably, one end of the outer surface of the piston rod is provided with an external thread, and the external thread on the piston rod is matched with the internal thread on the piston head.
Preferably, the inner cavity of the piston head is provided with internal threads, and the outer diameter value of the piston head is equal to the inner diameter value of the piston sleeve.
Preferably, the inner diameter value of the sealing block is matched, and the outer diameter value of the sealing block is larger than the inner diameter value of the piston head.
Preferably, the width value of the inner cavity of the second annular groove is matched with the diameter value of the O-shaped sealing sleeve.
Preferably, the length value of the Y-shaped sealing sleeve is matched with the length value of the inner cavity of the first annular groove.
(III) advantageous effects
Compared with the prior art, the utility model provides a combined sealing device of pneumatic cylinder piston possesses following beneficial effect:
1. this combined sealing device of hydraulic cylinder piston through mutually supporting between first seal cover, second seal cover, Y type seal cover and the O type seal cover, is convenient for better seal the inside of cylinder body to the problem of leaking appears easily in the solution of having solved the cylinder body inside, has improved the leakproofness of cylinder body inner chamber.
2. This combined sealing device of pneumatic cylinder piston, through the mutually supporting between cavity grooving, controller and the first sealed piece, be convenient for better carry out sealing process to annotating the liquid hole to solved and appeared the problem that liquid oil spills through annotating the liquid hole after the pneumatic cylinder operation, improved the leakproofness to annotating the liquid hole.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a schematic side view of the structural cylinder plate of the present invention;
FIG. 3 is a schematic view of the interior of the piston head according to the present invention;
fig. 4 is a schematic view of the structural cylinder body of the present invention.
In the figure: 1. a cylinder body; 2. a cylinder cover; 3. a hollow groove; 4. a controller; 5. a liquid injection hole; 6. a first seal block; 7. a first seal cartridge; 8. a second seal cartridge; 9. a piston rod; 10. a piston head; 11. a piston sleeve; 12. a sealing block; 13. a first annular groove; 14. a second annular groove; 15. a Y-shaped sealing sleeve; 16. and an O-shaped sealing sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, a combined sealing device of a hydraulic cylinder piston comprises a cylinder body 1, a cylinder cover 2 is welded on one side of the cylinder body 1, a hollow groove 3 is formed in the middle of the cylinder cover 2, a controller 4 is fixedly installed in an inner cavity of the hollow groove 3, a liquid injection hole 5 is fixedly installed at the top of the controller 4, a first sealing block 6 is formed in the top of one side of the cylinder cover 2, one end of the liquid injection hole 5 penetrates through an inner cavity of the first sealing block 6, a first sealing sleeve 7 is fixedly sleeved on the other side of the inner cavity of the cylinder body 1, a second sealing sleeve 8 positioned on the other side of the first sealing sleeve 7 is fixedly sleeved on the other side of the inner cavity of the cylinder body 1, a piston rod 9 is movably sleeved on the other side of the cylinder body 1, one end of the piston rod 9 extends to the inner cavity of the cylinder body 1, a piston head 10 positioned in the, one end of the piston rod 9 extends to one side of the piston head 10 and is fixedly sleeved with a sealing block 12, a first annular groove 13 is formed in the middle of the outer surface of the piston sleeve 11, a second annular groove 14 is formed in one side of the outer surface of the piston sleeve 11, a Y-shaped sealing sleeve 15 is fixedly sleeved in an inner cavity of the first annular groove 13, and an O-shaped sealing sleeve 16 is fixedly sleeved in an inner cavity of the second annular groove 14.
Wherein, the bottom of 1 inner chamber one side of cylinder body is equipped with certain inclination, and the top of 1 inner chamber one side of cylinder body is equipped with inclination equally.
Wherein, the one end of first sealed piece 6 is equipped with the rubber pad, and the rubber pad contacts with the inner wall of annotating liquid hole 5, has realized annotating liquid hole 5's sealed, has reached better sealed effect.
Wherein, the external screw thread has been seted up to the one end of piston rod 9 surface, and the external screw thread on the piston rod 9 and the internal thread looks adaptation on the piston head 10, realized linking together piston rod 9 and piston head 10, reached better linkage effect.
Wherein, the inner cavity of the piston head 10 is provided with internal threads, and the outer diameter value of the piston head 10 is equal to the inner diameter value of the piston sleeve 11.
Wherein, the inner diameter value of the sealing block 12 is adapted, and the outer diameter value of the sealing block 12 is larger than the inner diameter value of the piston head 10.
The width of the inner cavity of the second annular groove 14 is matched with the diameter of the O-shaped sealing sleeve 16, so that the O-shaped sealing sleeve 16 can be better fixed in the second annular groove 14.
Wherein the length value of the Y-shaped sealing sleeve 15 is matched with the length value of the inner cavity of the first annular groove 13.
In operation, the controller 4 is first controlled to open the first sealing block 6 and discharge the liquid oil into the cylinder 1 through the liquid injection hole 5, so that the piston sleeve 11 inside the cylinder 1 expands and contracts under the action of pressure.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a combination sealing device of pneumatic cylinder piston, includes cylinder body (1), its characterized in that: the cylinder cover (2) is welded on one side of the cylinder body (1), the hollow groove (3) is formed in the middle of the cylinder cover (2), the controller (4) is fixedly installed in an inner cavity of the hollow groove (3), the liquid injection hole (5) is fixedly installed in the top of the controller (4), the first sealing block (6) is formed in the top of one side of the cylinder cover (2), one end of the liquid injection hole (5) penetrates through an inner cavity of the first sealing block (6), the first sealing sleeve (7) is fixedly sleeved on the other side of the inner cavity of the cylinder body (1), the second sealing sleeve (8) located on the other side of the first sealing sleeve (7) is fixedly sleeved on the other side of the inner cavity of the cylinder body (1), the piston rod (9) is movably sleeved on the other side of the cylinder body (1), one end of the piston rod (9) extends to the inner cavity of the cylinder body (1), and the piston head (10) located in the inner cavity of, and the outer fixed surface of piston head (10) has cup jointed piston cover (11), the one end of piston rod (9) extends to one side of piston head (10) and fixed the cup jointing has sealed piece (12), first ring channel (13) have been seted up at the middle part of piston cover (11) surface, and one side of piston cover (11) surface has seted up second ring channel (14), the inner chamber of first ring channel (13) is fixed to be cup jointed Y type seal cover (15), and the inner chamber of second ring channel (14) is fixed to be cup jointed O type seal cover (16).
2. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: the bottom of cylinder body (1) inner chamber one side is equipped with certain inclination, and the top of cylinder body (1) inner chamber one side is equipped with inclination equally.
3. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: one end of the first sealing block (6) is provided with a rubber pad, and the rubber pad is contacted with the inner wall of the liquid injection hole (5).
4. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: an external thread is formed at one end of the outer surface of the piston rod (9), and the external thread on the piston rod (9) is matched with the internal thread on the piston head (10).
5. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: the inner cavity of the piston head (10) is provided with internal threads, and the outer diameter value of the piston head (10) is equal to the inner diameter value of the piston sleeve (11).
6. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: the inner diameter value of the sealing block (12) is matched, and the outer diameter value of the sealing block (12) is larger than the inner diameter value of the piston head (10).
7. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: the width value of the inner cavity of the second annular groove (14) is matched with the diameter value of the O-shaped sealing sleeve (16).
8. A combined sealing arrangement for a piston of a hydraulic cylinder according to claim 1, characterised in that: the length value of the Y-shaped sealing sleeve (15) is matched with the length value of the inner cavity of the first annular groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118103.2U CN210317981U (en) | 2019-07-17 | 2019-07-17 | Combined sealing device for piston of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118103.2U CN210317981U (en) | 2019-07-17 | 2019-07-17 | Combined sealing device for piston of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317981U true CN210317981U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921118103.2U Active CN210317981U (en) | 2019-07-17 | 2019-07-17 | Combined sealing device for piston of hydraulic cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN210317981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355220A (en) * | 2022-09-22 | 2022-11-18 | 无锡君帆科技有限公司 | Hydraulic cylinder with piston rod capable of acting simultaneously |
-
2019
- 2019-07-17 CN CN201921118103.2U patent/CN210317981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355220A (en) * | 2022-09-22 | 2022-11-18 | 无锡君帆科技有限公司 | Hydraulic cylinder with piston rod capable of acting simultaneously |
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