CN220015671U - Be applied to ultra-high temperature sealing device of pneumatic cylinder - Google Patents
Be applied to ultra-high temperature sealing device of pneumatic cylinder Download PDFInfo
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- CN220015671U CN220015671U CN202320772985.4U CN202320772985U CN220015671U CN 220015671 U CN220015671 U CN 220015671U CN 202320772985 U CN202320772985 U CN 202320772985U CN 220015671 U CN220015671 U CN 220015671U
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- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 238000001816 cooling Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 34
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to an ultrahigh temperature sealing device applied to a hydraulic cylinder. When the connecting pipe is damaged, the connecting cylinder is rotated until the connecting cylinder leaves the outer side of the oil inlet cylinder or the air outlet cylinder, the connecting cylinder and the connecting pipe are detached from the outer side of the oil inlet cylinder or the air outlet cylinder together, a new connecting pipe connected with the circular ring is slid into the connecting cylinder, the connecting cylinder is rotated again to be connected to the outer side of the oil inlet cylinder or the air outlet cylinder, the circular ring is fixed again, and the replacement of the connecting pipe is completed.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to an ultrahigh-temperature sealing device applied to a hydraulic cylinder.
Background
In the working process of the hydraulic oil cylinder, the working temperature is higher, so that the sealing of the piston is required to be wear-resistant and abrasion-resistant, and also to be high-temperature-resistant. At present, the sealing of the piston is mainly made of materials such as nitrile rubber, fluororubber, polytetrafluoroethylene and the like, but the sealing materials are not resistant to high temperature and short in service life, and are easy to be subjected to hot corrosion to generate leakage events when the temperature is higher than 245 ℃. Especially for large ladle sliding gate cylinder, its working temperature can reach 300 deg.C, and leakage phenomenon is more serious.
The prior art adopts a metal piston ring to replace the sealing structure of the materials, but the problem of large leakage amount still exists, and the application and popularization are difficult.
The ultra-high temperature sealing device and the hydraulic cylinder are applied to the hydraulic cylinder, wherein the cylinder barrel is made of 38CrMoAlA, the hardness of the cylinder barrel after heat treatment is more than or equal to HV920, the piston is made of spheroidal graphite cast iron, and the metal piston ring is made of special cast iron, so that the sealing between the piston ring and an inner hole can be realized under the conditions of ultra-high temperature and high pressure, the friction and abrasion to the metal piston ring are reduced, and the service life of the metal piston ring is prolonged. Through setting the ellipticity of hole to less than or equal to 0.02mm, set the fit clearance of piston and hole to 0.02mm ~ 0.05mm, the metal piston ring sets up to including arc body and connect in the overlap joint portion at arc body both ends, overlap joint portion includes two overlap joint pieces that connect in arc body both ends respectively, two overlap joint pieces dislocation set and laminating mutually for the metal piston ring forms complete sealed face in the circumference, and in the axis direction of piston, the width of the sum of two overlap joint pieces equals the width of arc body, can improve the sealed effect of metal piston ring, make revealing the volume be less than or equal to 20ml/min.
But the oil inlet of the hydraulic cylinder is inconvenient to rapidly disassemble and assemble the oil inlet pipe, so that the oil inlet pipe is replaced when damaged.
Therefore, it is needed to provide an ultra-high temperature sealing device which is convenient to disassemble and assemble and is applied to a hydraulic cylinder.
Disclosure of Invention
The utility model aims to provide an ultrahigh temperature sealing device applied to a hydraulic cylinder, which is used for solving the problem that the oil inlet of the hydraulic cylinder provided in the background art is inconvenient to rapidly disassemble and assemble an oil inlet pipe, so that the oil inlet pipe is replaced when damaged.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a be applied to ultra-high temperature sealing device of pneumatic cylinder, includes cylinder and piston, piston sliding connection is in the inboard of cylinder, the left end fixedly connected with output shaft of piston, the outside right-hand member top fixedly connected with inlet tube of cylinder, the outside left end top fixedly connected with air outlet tube of cylinder, the outside of cylinder is connected with sealing mechanism, sealing mechanism includes connecting unit and sealing unit, connecting unit sets up in the upper end outside of inlet tube and air outlet tube, sealing unit sets up in the left end of cylinder.
The connecting unit comprises a connecting cylinder, a connecting pipe and a circular ring, wherein the connecting cylinder is connected to the outer sides of the oil inlet cylinder and the air outlet cylinder, the connecting pipe is connected to the inner part of the connecting cylinder, and the circular ring is fixedly connected to the outer side of the lower end of the connecting pipe.
The further improvement lies in, the slide hole has been seted up to the inside upper end of connecting cylinder, the outside of connecting pipe and the inboard sliding connection of slide hole, the upper end and the inboard top butt of connecting cylinder of ring, the lower extreme and the upper end butt of oil inlet tube and venthole of ring to after connecting the connecting cylinder outside to oil inlet tube and venthole, can make the ring be fixed to between connecting cylinder upper end and oil inlet tube or the venthole.
The further improvement lies in, the internal thread has been seted up to the inboard of connecting cylinder, the external screw thread has been seted up in the outside of advance oil cylinder and venthole, the outside and the inboard threaded connection of connecting cylinder of advance oil cylinder and venthole to rotate the connecting cylinder through being located the outside of advance oil cylinder and venthole, can convenient and fast with connecting cylinder follow advance oil cylinder and venthole outside dismouting.
The sealing unit comprises a connecting plate, a sealing plate, a clamping frame, a connecting block, a bolt and a nut, wherein the connecting plate is fixedly connected to the outer side of the left end of the cylinder barrel, the sealing plate is connected to the left end of the connecting plate, the clamping frame is connected to the inner parts of the connecting plate and the sealing plate, the connecting block is fixedly connected to the middle positions around the outer sides of the connecting plate and the sealing plate, the bolt is connected to the inner part of the connecting block, and the nut is in threaded connection to the outer side of the bolt.
The further improvement lies in, the round hole has been seted up to the inside of connecting block, the outside of bolt and the inboard sliding connection of round hole, the spiral shell head department left side of bolt and the connecting block right side butt in the connecting plate outside, the outside right-hand member of nut and the connecting block left side butt in the shrouding outside to slide the bolt to in the round hole, with nut threaded connection to the outside other end in the bolt again, can fix the connecting block in connecting plate and shrouding outside.
The further improvement lies in, the inside right-hand member of connecting plate and the inside left end of shrouding are the draw-in groove of symmetrically offered, the outside and the inboard joint of draw-in groove of card frame to after the shrouding is fixed to the connecting plate left end, the card frame can be located the inside of connecting plate and shrouding.
The cylinder barrel is characterized in that the outer side of the cylinder barrel is fixedly connected with cooling fins with equal radian, so that when the hydraulic cylinder is used, the cooling fins can have a cooling effect on the hydraulic cylinder.
In summary, the utility model discloses an ultra-high temperature sealing device applied to a hydraulic cylinder.
After this technical scheme makes it leave into oil drum or venthole outside through rotating the connecting cylinder, the ring is no longer fixed this moment, can dismantle the connecting cylinder together with the connecting pipe from the oil drum or venthole outside to be convenient for dismantle the connecting pipe through the connecting unit, so that change when the connecting pipe damages.
Still further through placing the card frame behind the recess inboard of connecting plate left end, place the shrouding in the left end of connecting plate, make simultaneously the connecting block in connecting plate and shrouding outside align the back, slide the bolt to the round hole again in, then with nut threaded connection to the outside other end of bolt, can make the connecting plate and shrouding outside connecting block fixed mutually to make the shrouding fixed to the left end of cylinder, the card frame is fixed in the inside recess of connecting plate and shrouding simultaneously, makes the junction of connecting plate and shrouding be sealed completely, thereby avoid oil leakage in the pneumatic cylinder.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is a schematic diagram of a seal unit according to the present utility model;
FIG. 3 is a cross-sectional view of the body structure of the present utility model;
FIG. 4 is a schematic view of the structure of the connection unit of the present utility model;
fig. 5 is an enlarged view at a of fig. 1.
In the figure: 1. a cylinder; 2. a piston; 3. an output shaft; 4. an oil inlet cylinder; 5. an air outlet tube; 601. a connecting cylinder; 602. a connecting pipe; 603. a circular ring; 701. a connecting plate; 702. a sealing plate; 703. a clamping frame; 704. a connecting block; 705. a bolt; 706. a nut; 8. a heat sink.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution:
embodiment one:
the utility model provides a be applied to ultra-high temperature sealing device of pneumatic cylinder, including cylinder 1 and piston 2, piston 2 sliding connection is in the inboard of cylinder 1, and piston 2's left end fixedly connected with output shaft 3, cylinder 1's outside right-hand member top fixedly connected with advances oil drum 4, cylinder 1's outside left end top fixedly connected with venthole 5, cylinder 1's outside is connected with sealing mechanism, and sealing mechanism includes connecting element and sealing unit, and connecting element sets up in the upper end outside of advancing oil drum 4 and venthole 5, and sealing unit sets up in cylinder 1's left end.
The connection unit includes a connection cylinder 601, a connection pipe 602, and a ring 603, the connection cylinder 601 is connected to the outer sides of the oil inlet cylinder 4 and the air outlet cylinder 5, the connection pipe 602 is connected to the inside of the connection cylinder 601, and the ring 603 is fixedly connected to the outer side of the lower end of the connection pipe 602. The slide hole is opened in the inside upper end of connecting cylinder 601, and the outside of connecting pipe 602 and the inboard sliding connection of slide hole, the upper end of ring 603 and the inboard top butt of connecting cylinder 601, the lower extreme of ring 603 and the upper end butt of oil feed section of thick bamboo 4 and venthole 5. So that after the connection cylinder 601 is connected to the outside of the oil inlet cylinder 4 and the air outlet cylinder 5, the circular ring 603 can be fixed between the upper end of the connection cylinder 601 and the oil inlet cylinder 4 or the air outlet cylinder 5, so that the connection pipe 602 is fixed to the oil inlet cylinder 4 and the air outlet cylinder 5 to facilitate oil inlet and air exhaust when the hydraulic cylinder is used.
The inner side of the connecting cylinder 601 is provided with internal threads, the outer sides of the oil inlet cylinder 4 and the air outlet cylinder 5 are provided with external threads, and the outer sides of the oil inlet cylinder 4 and the air outlet cylinder 5 are connected with the inner side of the connecting cylinder 601 through threads. Therefore, the connecting cylinder 601 can be conveniently and quickly disassembled and assembled from the outer sides of the oil inlet cylinder 4 and the air outlet cylinder 5 by rotating the connecting cylinder 601 outside the oil inlet cylinder 4 and the air outlet cylinder 5, so that the connecting pipe 602 is convenient to replace when damaged.
Embodiment two:
based on the first embodiment: the sealing unit comprises a connecting plate 701, a sealing plate 702, a clamping frame 703, a connecting block 704, bolts 705 and nuts 706, wherein the connecting plate 701 is fixedly connected to the outer side of the left end of the cylinder barrel 1, the sealing plate 702 is connected to the left end of the connecting plate 701, the clamping frame 703 is connected to the inner parts of the connecting plate 701 and the sealing plate 702, the cylinder barrel 1, the connecting plate 701, the sealing plate 702 and the clamping frame 703 are made of Ti-6Al-4V titanium alloy, and the Ti-6Al-4V titanium alloy has high strength, so that the sealing unit can work at high temperature for a long time without leakage, the connecting block 704 is fixedly connected to the middle positions around the outer sides of the connecting plate 701 and the sealing plate 702, the bolts 705 are connected to the inner parts of the connecting block 704, and the nuts 706 are in threaded connection with the outer sides of the bolts 705. The inside of connecting block 704 has seted up the round hole, the outside of bolt 705 and the inboard sliding connection of round hole, the left side of the spiral shell head department left side of bolt 705 and the connecting block 704 right side butt in the connecting plate 701 outside, the outside right-hand member of nut 706 and the connecting block 704 left side butt in the shrouding 702 outside. Thus, after the sealing plate 702 is placed on the left end of the connecting plate 701 while aligning the connecting plate 701 with the connecting block 704 on the outer side of the sealing plate 702, the bolts 705 are slid into the circular holes, and then the nuts 706 are screwed to the other end on the outer side of the bolts 705, and the connecting plate 701 and the connecting block 704 on the outer side of the sealing plate 702 are fixed, so that the sealing plate 702 is fixed to the left end of the cylinder tube 1.
The inner right end of the connecting plate 701 and the inner left end of the sealing plate 702 are symmetrically provided with clamping grooves, and the outer side of the clamping frame 703 is clamped with the inner side of the clamping grooves. So that after the sealing plate 702 is fixed to the left end of the connecting plate 701, the clamping frame 703 may be located inside the connecting plate 701 and the sealing plate 702, so that the connection between the connecting plate 701 and the sealing plate 702 is completely closed, thereby avoiding oil leakage in the hydraulic cylinder.
The outer side of the cylinder barrel 1 is fixedly connected with cooling fins 8 with equal radian. Therefore, when the hydraulic cylinder is used, the cooling fin 8 can have a cooling effect on the hydraulic cylinder, so that the service life of the hydraulic cylinder is prolonged.
Working principle: when the connecting tube 602 is damaged, the connecting tube 601 is rotated until the connecting tube 601 leaves the outside of the oil inlet tube 4 or the air outlet tube 5, the connecting tube 601 and the connecting tube 602 are detached from the outside of the oil inlet tube 4 or the air outlet tube 5, a new connecting tube 602 connected with the circular ring 603 is slid into the connecting tube 601, then the connecting tube 601 is rotated again to be connected to the outside of the oil inlet tube 4 or the air outlet tube 5, the circular ring 603 is fixed again, and the replacement of the connecting tube 602 is completed.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Claims (7)
1. Be applied to ultra-high temperature sealing device of pneumatic cylinder, including cylinder (1) and piston (2), piston (2) sliding connection is in the inboard of cylinder (1), its characterized in that: the left end of the piston (2) is fixedly connected with an output shaft (3), an oil inlet cylinder (4) is fixedly connected above the right end of the outer side of the cylinder barrel (1), an air outlet cylinder (5) is fixedly connected above the left end of the outer side of the cylinder barrel (1), a sealing mechanism is connected outside the cylinder barrel (1), the sealing mechanism comprises a connecting unit and a sealing unit, the connecting unit is arranged outside the upper ends of the oil inlet cylinder (4) and the air outlet cylinder (5), and the sealing unit is arranged at the left end of the cylinder barrel (1);
the connecting unit comprises a connecting cylinder (601), a connecting pipe (602) and a circular ring (603), wherein the connecting cylinder (601) is connected to the outer sides of the oil inlet cylinder (4) and the air outlet cylinder (5), the connecting pipe (602) is connected to the inner part of the connecting cylinder (602), and the circular ring (603) is fixedly connected to the outer side of the lower end of the connecting pipe (602).
2. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 1, wherein: the inside slide hole that has seted up of upper end of connecting cylinder (601), the outside of connecting pipe (602) and the inboard sliding connection of slide hole, the upper end and the inboard top butt of connecting cylinder (601) of ring (603), the lower extreme and the upper end butt of oil inlet tube (4) and air outlet tube (5) of ring (603).
3. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 1, wherein: the inner side of the connecting cylinder (601) is provided with an internal thread, the outer sides of the oil inlet cylinder (4) and the air outlet cylinder (5) are provided with external threads, and the outer sides of the oil inlet cylinder (4) and the air outlet cylinder (5) are in threaded connection with the inner side of the connecting cylinder (601).
4. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 1, wherein: the sealing unit comprises a connecting plate (701), a sealing plate (702), a clamping frame (703), a connecting block (704), a bolt (705) and a nut (706), wherein the connecting plate (701) is fixedly connected to the outer side of the left end of the cylinder barrel (1), the sealing plate (702) is connected to the left end of the connecting plate (701), the clamping frame (703) is connected to the inner parts of the connecting plate (701) and the sealing plate (702), the connecting block (704) is fixedly connected to the outer sides of the connecting plate (701) and the sealing plate (702) at the middle positions all around, the bolt (705) is connected to the inner part of the connecting block (704), and the nut (706) is connected to the outer sides of the bolt (705) through threads.
5. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 4, wherein: the inside of connecting block (704) has seted up the round hole, the outside of bolt (705) and the inboard sliding connection of round hole, the left side of the spiral shell head department of bolt (705) and connecting block (704) right side butt in connecting plate (701) outside, the outside right-hand member of nut (706) and connecting block (704) left side butt in shrouding (702) outside.
6. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 4, wherein: the inside right-hand member of connecting plate (701) and the inside left end of shrouding (702) are the draw-in groove of symmetrically offered, the outside and the inboard joint of draw-in groove of card frame (703).
7. The ultra-high temperature sealing device for a hydraulic cylinder according to claim 1, wherein: the outer side of the cylinder barrel (1) is fixedly connected with cooling fins (8) with equal radian.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320772985.4U CN220015671U (en) | 2023-04-10 | 2023-04-10 | Be applied to ultra-high temperature sealing device of pneumatic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320772985.4U CN220015671U (en) | 2023-04-10 | 2023-04-10 | Be applied to ultra-high temperature sealing device of pneumatic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220015671U true CN220015671U (en) | 2023-11-14 |
Family
ID=88677938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320772985.4U Active CN220015671U (en) | 2023-04-10 | 2023-04-10 | Be applied to ultra-high temperature sealing device of pneumatic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220015671U (en) |
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2023
- 2023-04-10 CN CN202320772985.4U patent/CN220015671U/en active Active
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