CN218093694U - Hydraulic cylinder sealing leakage-proof structure - Google Patents
Hydraulic cylinder sealing leakage-proof structure Download PDFInfo
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- CN218093694U CN218093694U CN202221420508.3U CN202221420508U CN218093694U CN 218093694 U CN218093694 U CN 218093694U CN 202221420508 U CN202221420508 U CN 202221420508U CN 218093694 U CN218093694 U CN 218093694U
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- rubber ring
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- hydraulic cylinder
- sliding groove
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Abstract
The utility model discloses a sealed leak protection structure of pneumatic cylinder belongs to the pneumatic cylinder field, including the piston head, the draw-in groove has been seted up in the outside of piston head, it has sealed rubber ring to peg graft in the inside of draw-in groove, inside the draw-in groove is extended in the outside of sealed rubber ring, the spout has been seted up on one side of draw-in groove, the inside one side fixed mounting who keeps away from the draw-in groove of spout has the gasbag, one side fixed mounting that the gasbag is close to the spout has the compensation rubber ring, the one end of compensation rubber ring extends into inside and fixed connection in the inboard of sealed rubber ring of draw-in groove, one side that the spout was kept away from to the gasbag is provided with inflating mechanism, through being provided with beaded finish fixed connection between the one end of compensation rubber ring and the inboard of sealed rubber ring, the gomphosis groove that cup joints with the beaded finish outside of beaded finish is seted up to the inboard of sealed rubber ring, it can realize can practicing thrift the operating procedure of manual extrusion sealed rubber ring deformation in order to compensate its wearing and tearing, deformation when making things convenient for sealed rubber ring wearing and tearing, in time compensate at the in-process of pneumatic cylinder.
Description
Technical Field
The utility model relates to a pneumatic cylinder field, more specifically say, relate to a pneumatic cylinder seals leak protection structure.
Background
The hydraulic cylinder sealing is an important sealing means when the hydraulic cylinder runs, and can seal a gap between the piston head and the inner side of the hydraulic cylinder so as to limit the flow of hydraulic oil in the hydraulic cylinder and facilitate the collection of the hydraulic oil at one end of the piston head;
through patent retrieval, chinese patent with publication number CN216199465U discloses a cold rolling mill roller oil cylinder shaft head seal, which comprises a roller piston rod shaft head, an annular pre-tightening cover, a V-shaped sealing ring, a pre-tightening thread groove, a dustproof pad, a dustproof ring, a connecting hole, a limiting jack, a special wrench, a bolt, a strip-shaped groove, a limiting pin, a sealing groove and a bottom flange, wherein although the annular pre-tightening cover is driven to rotate by screwing the wrench, when the annular pre-tightening cover is screwed into the pre-tightening thread groove, the bottom flange of the annular pre-tightening cover can compress the V-shaped sealing ring to increase the compression strength, so that a better sealing effect is obtained, the hydraulic system fault caused by external pollutants invading the hydraulic system is prevented, and the service life of a servo valve is prolonged;
however, the problem that when the shaft head sealing sleeve of the roller oil cylinder of the existing cold rolling mill is sleeved on the piston head of the hydraulic cylinder, the spanner is screwed to drive the annular pre-tightening cover to rotate, the annular pre-tightening cover compresses the V-shaped sealing ring, the V-shaped sealing ring deforms and is attached to the inner side of the hydraulic cylinder, and the spanner needs to be operated to compress the sealing ring when the sealing performance of the sealing ring is reduced so as to compensate the abrasion loss of the sealing ring, the leakage of the sealing part of the hydraulic cylinder is prevented, the sealing ring deforms to compensate the abrasion loss when being inconvenient to abrade, and the hydraulic cylinder is difficult to compensate in time when being abraded is solved, so that the leakage-preventing structure for sealing of the hydraulic cylinder is provided.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide a hydraulic cylinder seals prevents leaking structure, it can realize can practicing thrift the operating procedure of manual extrusion seal rubber ring deformation, deformation in order to compensate its wearing and tearing volume when convenient seal rubber ring wearing and tearing to in-process at the sealed wearing and tearing of pneumatic cylinder in time compensates.
2. Technical scheme
In order to solve the problem, the utility model adopts the following technical proposal.
The utility model provides a sealed structure of preventing leaking of pneumatic cylinder, includes the piston head, the draw-in groove has been seted up in the outside of piston head, the inside grafting of draw-in groove has sealed rubber ring, inside the draw-in groove was extended in the outside of sealed rubber ring, the spout has been seted up on one side of draw-in groove inner wall, the inside one side fixed mounting who keeps away from the draw-in groove of spout has the gasbag, one side fixed mounting that the gasbag is close to the spout has compensation rubber ring, the one end of compensation rubber ring extends into inside and fixed connection in the inboard of sealed rubber ring of draw-in groove, one side that the spout was kept away from to the gasbag is provided with air charging mechanism.
Furthermore, one end of the compensation rubber ring is fixedly connected with the inner side of the sealing rubber ring through a reinforcing ring, and the inner side of the sealing rubber ring is provided with an embedded groove which is sleeved with the outer side of the reinforcing ring.
Furthermore, the inflating mechanism comprises an air inlet pipe fixedly installed on one side of the air bag, one end of the air inlet pipe extends out of the sliding groove, and a one-way valve is assembled on the outer side of the air inlet pipe and the position, located outside the sliding groove, of the air inlet pipe.
Furthermore, a through hole for the air inlet pipe to pass through is formed in the inner side of the sliding groove, and a placing groove is formed in one end, far away from the sliding groove, of the through hole.
Furthermore, the fixed position that the through-hole was kept away from to the standing groove inside has the checkpost, the inside one end that extends the spout in the intake pipe of checkpost joint.
Furthermore, the connecting position of the clamping groove and the sliding groove is provided with a radian, and the middle inside the placing groove is provided with a radian.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) The piston head is arranged inside the hydraulic cylinder according to the scheme, the piston head is in contact with the inner wall of the hydraulic cylinder through the sealing rubber ring, the sealing rubber ring rubs with the inner wall of the hydraulic cylinder along with the movement of the piston head, the abrasion is caused, the thickness of the sealing rubber ring is reduced, further, the extrusion effect of the sealing rubber ring and the compensation rubber ring on the air bag is weakened, the air bag deforms and expands under the action of internal molecules, the compensation rubber ring is pushed by the air bag to slide to the clamping groove along the inner wall of the sliding groove, the sealing rubber ring is extruded by the compensation rubber ring, the inner wall of the hydraulic cylinder is tightly attached to the outer side of the sealing rubber ring, the abrasion loss of the sealing rubber ring is compensated, the air bag expands when the sealing performance of the sealing rubber ring is reduced, the abrasion loss of the sealing ring is compensated, the leakage of the hydraulic cylinder sealing position is prevented, the operation step of deformation of the manual extrusion sealing rubber ring deformation of the sealing rubber ring is saved, and the abrasion loss of the sealing rubber ring is compensated, and the abrasion loss of the hydraulic cylinder is timely compensated.
(2) This scheme is when the gasbag needs to be aerifyd, be connected to the inert gas compression jar with the air inlet of intake pipe, open the valve of inert gas compression jar again, inert gas is in the check valve one-way inflow gasbag, through observing the pressure valve on the inert gas compression jar, the valve of inert gas compression jar is closed when atmospheric pressure in the gasbag reaches the specified scope, the check valve prevents inert gas along the intake pipe outflow simultaneously, conveniently aerify for the gasbag, make the gasbag can extrude the compensation and glue the ring, and when the gasbag need exhaust, through dismantling the check valve, can discharge the gas in the gasbag.
Drawings
Fig. 1 is a schematic side view of the present invention;
fig. 2 is a schematic sectional structural view of the present invention;
fig. 3 is an enlarged schematic structural view of a point a in fig. 2 according to the present invention;
fig. 4 is an enlarged schematic structural diagram of the present invention at B in fig. 2.
The reference numbers in the figures illustrate:
1. a piston head; 2. sealing the rubber ring; 3. a card slot; 4. a chute; 5. an air bag; 6. a compensation rubber ring; 7. a reinforcement ring; 8. a fitting groove; 9. an air inlet pipe; 10. a one-way valve; 11. a through hole; 12. a placement groove; 13. a clip.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
Example (b):
referring to fig. 1-4, a hydraulic cylinder sealing and leakage-preventing structure comprises a piston head 1, a clamping groove 3 is formed on the outer side of the piston head 1, a sealing rubber ring 2 is inserted into the clamping groove 3, the outer side of the sealing rubber ring 2 extends out of the clamping groove 3, a sliding groove 4 is formed on one side of the inner wall of the clamping groove 3, an air bag 5 is fixedly installed on one side, far away from the clamping groove 3, of the inner side of the sliding groove 4, the structure of the clamping groove 3, the structure of the sliding groove 4 and the structure of the air bag 5 are both annular, inert gas is filled in the air bag 5, a compensation rubber ring 6 is fixedly installed on one side, close to the sliding groove 4, of the air bag 5, the material of the sealing rubber ring 2 and the material of the compensation rubber ring 6 are both rubber, the connecting position of the clamping groove 3 and the sliding groove 4 has a radian, so that the cutting action of the connecting position of the clamping groove 3 and the sliding groove 4 on the compensation rubber ring 6 can be conveniently relieved, and the piston head 1, the sealing rubber ring 2 and the compensation rubber ring 6 are coaxial, one end of the compensation rubber ring 6 extends into the inside of the clamping groove 3 and is fixedly connected to the inner side of the sealing rubber ring 2, one side of the air bag 5, which is far away from the sliding groove 4, is provided with an inflating mechanism, when the air bag works, the piston head 1 is arranged inside the hydraulic cylinder, the piston head 1 contacts the inner wall of the hydraulic cylinder through the sealing rubber ring 2, the sealing rubber ring 2 rubs with the inner wall of the hydraulic cylinder along with the movement of the piston head 1 to cause abrasion, the thickness of the sealing rubber ring 2 is reduced, further, the extrusion action of the sealing rubber ring 2 and the compensation rubber ring 6 on the air bag 5 is weakened, the air bag 5 deforms and expands under the action of internal molecules, the compensation rubber ring 6 is pushed by the air bag 5 to slide into the clamping groove 3 along the inner wall of the sliding groove 4, the compensation rubber ring 6 extrudes the sealing rubber ring 2, the outer side of the sealing rubber ring 2 is tightly attached to the inner wall of the hydraulic cylinder, so that the abrasion amount of the sealing rubber ring 2 is compensated, and the air bag 5 can expand when the sealing performance of the sealing rubber ring 2 is reduced, with the wearing and tearing volume of compensation sealing washer, prevent that the condition of pneumatic cylinder seal department leakage from taking place, can practice thrift the operating procedure of the 2 deformation of manual extrusion sealing rubber ring, deformation is in order to compensate its wearing and tearing volume when convenient sealing rubber ring 2 wearing and tearing to in-process at the sealed wearing and tearing of pneumatic cylinder in time compensates.
Referring to fig. 1, 2 and 3, the inflating mechanism includes an air inlet pipe 9 fixedly installed on one side of the airbag 5, one end of the air inlet pipe 9 extends out of the chute 4, a one-way valve 10 is assembled on the outer side of the air inlet pipe 9 and the position outside the chute 4, when the airbag 5 needs to be inflated, an air inlet of the air inlet pipe 9 is connected to the inert gas compression tank, a valve of the inert gas compression tank is opened, the inert gas flows into the airbag 5 along the one-way valve 10 in a one-way manner, through observing a pressure valve on the inert gas compression tank, the valve of the inert gas compression tank is closed when the air pressure in the airbag 5 reaches a specified range, meanwhile, the one-way valve 10 prevents the inert gas from flowing out along the air inlet pipe 9, the airbag 5 is inflated conveniently, the compensation rubber ring 6 can be extruded by the airbag 5, and when the airbag 5 needs to exhaust, the gas in the airbag 5 can be exhausted by detaching the one-way valve 10.
Referring to fig. 1 and 2, a through hole 11 for an air inlet pipe 9 to pass through is formed in the inner side of the sliding groove 4, a placing groove 12 is formed in one end, far away from the sliding groove 4, of the through hole 11, a radian is formed in the middle of the inside of the placing groove 12, when the piston head 1 drives the air inlet pipe 9 to move in the hydraulic cylinder, the air inlet pipe 9 and the one-way valve 10 are placed into the placing groove 12, the one-way valve 10 is attached to the inner arc surface of the placing groove 12, the air inlet pipe 9 and the one-way valve 10 are conveniently completely immersed into the placing groove 12, and the air inlet pipe 9 and the one-way valve 10 are prevented from impacting the hydraulic cylinder when the piston head 1 contacts the end face of the hydraulic cylinder.
Referring to fig. 1, the inside fixed position who keeps away from through-hole 11 of standing groove 12 has checkpost 13, the material of checkpost 13 is stainless steel, be convenient for checkpost 13 keep the rigidity in the inside high temperature environment of pneumatic cylinder, checkpost 13 joint extends the inside one end of spout 4 in intake pipe 9, when intake pipe 9 sinks into standing groove 12, through the one end of checkpost 13 joint intake pipe 9, conveniently fix intake pipe 9 inside standing groove 12, inertia when alleviating intake pipe 9 and following the motion of piston head 1.
Referring to fig. 2 and 4, the one end of the compensation rubber ring 6 is fixedly connected with the inner side of the sealing rubber ring 2 through the reinforcing ring 7, the inner side of the sealing rubber ring 2 is provided with the embedded groove 8 which is sleeved with the outer side of the reinforcing ring 7, the outer side of the reinforcing ring 7 and the inner side of the embedded groove 8 are coated with glue, the joint of the sealing rubber ring 2 and the compensation rubber ring 6 is coated with glue, the compensation rubber ring 6 is connected to the sealing rubber ring 2 through the reinforcing ring 7 and the embedded groove 8, the contact area of the joint of the sealing rubber ring 2 and the compensation rubber ring 6 is conveniently enhanced, the relation between the sealing rubber ring 2 and the compensation rubber ring 6 is improved, and the occurrence of the fracture condition of the joint of the sealing rubber ring 2 and the compensation rubber ring 6 is reduced.
The working principle is as follows: when the hydraulic cylinder is in operation, the piston head 1 is arranged inside the hydraulic cylinder, the piston head 1 contacts the inner wall of the hydraulic cylinder through the sealing rubber ring 2, the sealing rubber ring 2 rubs with the inner wall of the hydraulic cylinder along with the movement of the piston head 1, abrasion is caused, the thickness of the sealing rubber ring 2 is reduced, further, the extrusion effect of the sealing rubber ring 2 and the compensation rubber ring 6 on the air bag 5 is weakened, the air bag 5 deforms and expands under the action of internal molecules, the compensation rubber ring 6 is pushed by the air bag 5 to slide towards the clamping groove 3 along the inner wall of the sliding groove 4, the compensation rubber ring 6 extrudes the sealing rubber ring 2, the outer side of the sealing rubber ring 2 is tightly attached to the inner wall of the hydraulic cylinder, the abrasion loss of the sealing rubber ring 2 is compensated, the air bag 5 can expand when the sealing performance of the sealing rubber ring 2 is reduced, the abrasion loss of the sealing ring is compensated, the leakage condition of the sealing position of the hydraulic cylinder is prevented, the operation step of manually extruding the deformation of the sealing rubber ring 2 can be saved, the deformation of the sealing rubber ring 2 when the sealing rubber ring 2 is convenient, and the abrasion loss of the sealing rubber ring is compensated in time, and the abrasion process of the hydraulic cylinder can be compensated in time.
When gasbag 5 needs aerify, be connected to the inert gas compression jar with the air inlet of intake pipe 9, open the valve of inert gas compression jar again, inert gas flows in gasbag 5 along check valve 10 one-way, through observing the pressure valve on the inert gas compression jar, close the valve of inert gas compression jar when atmospheric pressure in the gasbag 5 reaches the specified scope, check valve 10 prevents inert gas to flow along intake pipe 9 simultaneously, conveniently aerify for gasbag 5, make gasbag 5 can extrude compensation rubber ring 6, and when gasbag 5 need exhaust, through dismantling check valve 10, can discharge the gas in the gasbag 5.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a hydraulic cylinder seals prevents leaking structure, includes piston head (1), its characterized in that: the air inflation piston is characterized in that a clamping groove (3) is formed in the outer side of the piston head (1), a sealing rubber ring (2) is inserted into the clamping groove (3), the outer side of the sealing rubber ring (2) extends out of the clamping groove (3), a sliding groove (4) is formed in one side of the inner wall of the clamping groove (3), an air bag (5) is fixedly mounted on one side, away from the clamping groove (3), of the inner portion of the sliding groove (4), a compensation rubber ring (6) is fixedly mounted on one side, close to the sliding groove (4), of the air bag (5), one end of the compensation rubber ring (6) extends into the inner portion of the clamping groove (3) and is fixedly connected to the inner side of the sealing rubber ring (2), and an air inflation mechanism is arranged on one side, away from the sliding groove (4), of the air bag (5).
2. The hydraulic cylinder seal leakage prevention structure of claim 1, wherein: one end of the compensation rubber ring (6) is fixedly connected with the inner side of the sealing rubber ring (2) through a reinforcing ring (7), and an embedded groove (8) which is sleeved with the outer side of the reinforcing ring (7) is formed in the inner side of the sealing rubber ring (2).
3. The hydraulic cylinder seal leakage prevention structure of claim 1, wherein: the inflating mechanism comprises an air inlet pipe (9) fixedly installed on one side of the air bag (5), one end of the air inlet pipe (9) extends out of the sliding groove (4), and a one-way valve (10) is assembled on the outer side of the air inlet pipe (9) and the position, located outside the sliding groove (4).
4. The sealing and leakage-preventing structure for hydraulic cylinder as claimed in claim 3, wherein: a through hole (11) for an air inlet pipe (9) to pass through is formed in the inner side of the sliding groove (4), and a placing groove (12) is formed in one end, far away from the sliding groove (4), of the through hole (11).
5. The hydraulic cylinder seal leakage prevention structure of claim 4, wherein: the inside fixed position of keeping away from through-hole (11) of standing groove (12) has checkpost (13), checkpost (13) joint extends the inside one end in spout (4) in intake pipe (9).
6. The hydraulic cylinder seal leakage prevention structure of claim 4, wherein: the connecting part of the clamping groove (3) and the sliding groove (4) is provided with a radian, and the middle inside the placing groove (12) is provided with a radian.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221420508.3U CN218093694U (en) | 2022-06-09 | 2022-06-09 | Hydraulic cylinder sealing leakage-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221420508.3U CN218093694U (en) | 2022-06-09 | 2022-06-09 | Hydraulic cylinder sealing leakage-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218093694U true CN218093694U (en) | 2022-12-20 |
Family
ID=84462287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221420508.3U Active CN218093694U (en) | 2022-06-09 | 2022-06-09 | Hydraulic cylinder sealing leakage-proof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218093694U (en) |
-
2022
- 2022-06-09 CN CN202221420508.3U patent/CN218093694U/en active Active
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