CN203856802U - Pressurizing cylinder of energy-saving ultrahigh-pressure water-expansion hydraulic press - Google Patents
Pressurizing cylinder of energy-saving ultrahigh-pressure water-expansion hydraulic press Download PDFInfo
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- CN203856802U CN203856802U CN201420148946.8U CN201420148946U CN203856802U CN 203856802 U CN203856802 U CN 203856802U CN 201420148946 U CN201420148946 U CN 201420148946U CN 203856802 U CN203856802 U CN 203856802U
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- ring
- piston
- cylinder body
- hydraulic press
- seal ring
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Abstract
The utility model belongs to the technical field of pipe fitting machining and particularly relates to a pressurizing cylinder of an energy-saving ultrahigh-pressure water-expansion hydraulic press. The pressurizing cylinder comprises a barrel-shaped cylinder body, wherein a piston is arranged in the cylinder body and is connected with a piston rod, a plugging seat is fixedly arranged at one end of the cylinder body, a center through hole running through the interior of the cylinder body is formed in the plugging seat, a groove is formed in one end, facing to the center through hole, of the piston, the piston rod is fixedly arranged at the other end of the piston, and an annular groove is formed in the side part of the piston. The pressurizing cylinder is characterized in that a sealing ring made from an elastic material and a retaining ring made from a hard material are arranged in the annular groove and are arranged in the annular groove along the axial direction of the cylinder body, an inclined face is formed at the outer side of the root part of one end, far away from the sealing ring, of the retaining ring and forms a triangular annular groove in the annular groove, and a squeeze-proof ring with the same shape as that of the triangular annular groove is arranged in the triangular annular groove and is made from a rigid material. The pressurizing cylinder has the advantages of being good in sealing performance and applicable to ultrahigh-pressure operation.
Description
Technical field
The utility model belongs to pipe fitting processing technique field, especially relates to a kind of pressurized cylinder of energy-saving extra-high pressure gas water swelling hydraulic press.
Background technique
Pressurized cylinder is incoming pressure can be converted, and with the hydraulic element of elevated pressures output, is that an oil hydraulic cylinder is combined as integral type with pressurized machine.In the prior art, the seal ring of pressurized cylinder is generally only applicable to usual pressure, and is not suitable for hyperpressure, super high pressure oil can make sealed ring deformation excessive and cause leak, poor sealing; In addition,, under hyperpressure, seal ring root is easily squeezed into the gap of relative movement part and damages.
For example, Chinese patent literature discloses a kind of cylinder [application number: CN201220490489.1] with y-type seal ring, comprise: protecgulum, bonnet, cylinder barrel, piston rod, piston, spool and protecgulum anti-dust seat, protecgulum, cylinder barrel is connected successively with bonnet, piston rod is arranged in protecgulum, part is arranged in cylinder barrel, piston is arranged in cylinder barrel and is connected with piston rod, spool is arranged in piston and is connected with piston, protecgulum anti-dust seat is arranged on protecgulum inside and is connected with piston rod socket, it also comprises a y-type seal ring and a supporting ring, y-type seal ring is arranged between cylinder barrel and piston and connects in succession with piston sleeve, supporting ring is arranged between y-type seal ring and piston and with piston sleeve and connects in succession.
Although such scheme has solved the deficiencies in the prior art to a certain extent, good seal performance, stable performance, but still inapplicable operation under hyperpressure, super high pressure oil can make sealed ring deformation excessive and cause leak, still sealing can be bad; In addition,, under hyperpressure, seal ring root is easily squeezed into the gap of relative movement part and damages, and causes sealing effect poor.
Summary of the invention
The purpose of this utility model is for the problems referred to above, and a kind of reasonable in design, simple in structure, good airproof performance and can be at the pressurized cylinder of the energy-saving extra-high pressure gas water swelling hydraulic press of operation under ultrahigh pressure is provided.
For achieving the above object, the utility model has adopted following technical proposal: the pressurized cylinder of this energy-saving ultrahigh pressure water swelling hydraulic press, comprise tubular cylinder body, in cylinder body, be provided with piston, described piston is connected with piston rod, described cylinder body one end is fixed with shutoff seat, on shutoff seat, have the central through bore connecting with cylinder interior, described piston is provided with groove towards one end of central through bore, the other end is fixed with above-mentioned piston rod, described piston sidepiece is provided with circular groove, it is characterized in that, in described circular groove, be provided with the seal ring of being made by elastic material and the back-up ring of being made by hard material, described seal ring and back-up ring in circular groove along cylinder body axially-aligned, described back-up ring has Qie Gai inclined-plane, inclined-plane away from the root outside of seal ring one end and in circular groove, forms triangular ring groove, in described triangular ring groove, be provided with anti-the squeeze ring identical with triangular ring groove shape, the described anti-ring that squeezes is made up of rigid material.Described seal ring is subject to axial pressure and circumferential pressure, good sealing effect simultaneously; Described back-up ring can prevent seal ring play, and in addition, when seal ring is under pressure when excessive, described back-up ring can, by the inwall close contact of deformation and cylinder body, play certain seal action; The described anti-ring that squeezes has active force obliquely to back-up ring, and the excessive deformation of anti-Sealing shield ring has improved crowded ability of resisting of seal ring, thus working pressure and the working life of improving seal ring.
In the pressurized cylinder of above-mentioned energy-saving extra-high pressure gas water swelling hydraulic press, described seal ring comprises base portion and be arranged on epipharynx and the outer lip on base portion, and described base portion and epipharynx and outer lip are connected as a single entity and cross section is Y type.The outer lip of y-type seal ring is affixed on inboard wall of cylinder block, and epipharynx is affixed on circular groove inwall, the in the situation that of sealing, the procheilon of epipharynx and outer lip will be subject to axial compression, both sides are subject to circumferential compression, and the surface of contact of outer lip and inboard wall of cylinder block broadens, and contact stress increases, in the time that interior pressure raises again, the distribution form of contact and size further change, and outer lip coordinates closelyr with inboard wall of cylinder block, has good " self-tightening ", sealing effect is better, can adapt to ultrahigh pressure operation.
In the pressurized cylinder of above-mentioned energy-saving extra-high pressure gas water swelling hydraulic press, described seal ring compressional deformation is arranged in circular groove.
In the pressurized cylinder of above-mentioned energy-saving extra-high pressure gas water swelling hydraulic press, the thickness of described base portion equates with epipharynx and outer lip thickness.Compared with conventional seals circle, above-mentioned seal ring has increased depth-width ratio and the root height of section, and in addition, the magnitude of interference of outer lip and epipharynx reduces, and thickness increases, and outer lip and epipharynx wearing and tearing reduce, and have improved prestressing force.
In the pressurized cylinder of above-mentioned energy-saving extra-high pressure gas water swelling hydraulic press, described piston is made up of Cr and hardness is not less than HRC, and the roughness of described piston is .-.; Described back-up ring is made up of teflon; Described seal ring is made up of rubber.The compressive strength of cylinder body strengthens, and has adopted teflon back-up ring simultaneously, and at the anti-ring that squeezes of back-up ring root added with triangle, has improved the anti-ability of squeezing of seal ring, thus working pressure and the working life of improving seal ring.
In the pressurized cylinder of above-mentioned energy-saving extra-high pressure gas water swelling hydraulic press, described shutoff seat comprises the closure part that inserts in cylinder ends, has ring part in the outer end of closure part, and described ring part external diameter equates with cylinder body external diameter.
Compared with prior art, the advantage of the pressurized cylinder of this energy-saving ultrahigh pressure water swelling hydraulic press is: good airproof performance, stable performance, be suitable for operation under hyperpressure, seal ring is subject to axial pressure and circumferential pressure simultaneously, seal ring bottom is connected with teflon back-up ring, good stability, and be added with the anti-ring that squeezes of triangle at back-up ring root, improved the anti-ability of squeezing of seal ring, thereby working pressure and the working life of improving seal ring, global design is reasonable, simple in structure, practical, be beneficial to industrialization promotion.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model provides.
In figure, cylinder body 1, piston 2, piston rod 3, shutoff seat 4, central through bore 5, groove 6, circular groove 7, seal ring 8, back-up ring 9, inclined-plane 10, triangular ring groove 11, anti-ring 12, base portion 13, epipharynx 14, outer lip 15, closure part 16, the ring part 17 of squeezing.
Embodiment
Embodiment 1
As shown in Figure 1, the pressurized cylinder of this energy-saving ultrahigh pressure water swelling hydraulic press, comprise tubular cylinder body 1, in cylinder body 1, be provided with piston 2, piston 2 is connected with piston rod 3, cylinder body 1 one end is fixed with shutoff seat 4, on shutoff seat 4, have the central through bore 5 with cylinder body 1 internal run-through, piston 2 is provided with groove 6 towards one end of central through bore 5, the other end is fixed with above-mentioned piston rod 3, piston 2 sidepieces are provided with circular groove 7, in circular groove 7, be provided with the seal ring 8 of being made by elastic material and the back-up ring 9 of being made by hard material, seal ring 8 and back-up ring 9 are interior along cylinder body 1 axially-aligned at circular groove 7, back-up ring 9 has 10Qie Gai inclined-plane 10, inclined-plane at the interior formation triangular ring of circular groove 7 groove 7 away from the root outside of seal ring 8 one end, in triangular ring groove 7, be provided with anti-the squeeze ring 12 identical with triangular ring groove 7 shapes, the anti-ring 12 that squeezes is made up of rigid material.Seal ring 8 is subject to axial pressure and circumferential pressure, good sealing effect simultaneously; Back-up ring 9 can prevent seal ring 8 plaies, and in addition, when seal ring 8 is under pressure when excessive, described back-up ring 9 can, by the inwall close contact of deformation and cylinder body 1, play certain seal action; The anti-12 pairs of back-up rings 9 of ring that squeeze have active force obliquely, and the excessive deformation of anti-Sealing shield ring 9 has improved crowded ability of resisting of seal ring 8, thus working pressure and the working life of improving seal ring 8.
Wherein, seal ring 8 comprises base portion 13 and is arranged on epipharynx 14 and the outer lip 15 on base portion 13, and base portion 13 is with epipharynx 14 and outer lip 15 is connected as a single entity and cross section is Y type.The outer lip 15 of y-type seal ring 8 is affixed on cylinder body 1 inwall, epipharynx 14 is affixed on circular groove 7 inwalls, the in the situation that of sealing, the procheilon of epipharynx 14 and outer lip 15 will be subject to axial compression, both sides are subject to circumferential compression, outer lip 15 broadens with the surface of contact of cylinder body 1 inwall, contact stress increases, in the time that interior pressure raises again, the distribution form of contact and size further change, and outer lip 15 coordinates closelyr with cylinder body 1 inwall, has good " self-tightening ", sealing effect is better, can adapt to ultrahigh pressure operation.Seal ring 8 compressional deformations are arranged in circular groove 7.The thickness of base portion 13 equates with epipharynx 14 and outer lip 15 thickness, and compared with conventional seals circle, above-mentioned seal ring 8 has increased depth-width ratio and the root height of section, in addition, the magnitude of interference of outer lip 15 and epipharynx 14 reduces, and thickness increases, outer lip 15 and epipharynx 14 wearing and tearing reduce, and have improved prestressing force.Piston 2 is made up of Cr12 and hardness is not less than HRC60, and the roughness of piston 2 is 0.2-0.4; Back-up ring 9 is made up of teflon; Seal ring 8 is made up of rubber, and the compressive strength of cylinder body 1 strengthens, and has adopted teflon back-up ring 9 simultaneously, and at the anti-ring 12 that squeezes of back-up ring 9 root added with triangle, has improved the anti-ability of squeezing of seal ring 8, thus working pressure and the working life of improving seal ring 8.Shutoff seat 4 comprises the closure part 16 that inserts in cylinder body 1 end, has ring part 17 in the outer end of closure part 16, and ring part 17 external diameters equate with cylinder body 1 external diameter.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used cylinder body 1, piston 2, piston rod 3, shutoff seat 4, central through bore 5, groove 6, circular groove 7, seal ring 8, back-up ring 9, inclined-plane 10, triangular ring groove 11, the anti-terms such as ring 12, base portion 13, epipharynx 14, outer lip 15, closure part 16, ring part 17 that squeeze herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model, they are construed to any additional restriction is all contrary with the utility model spirit.
Claims (6)
1. the pressurized cylinder of an energy-saving extra-high pressure gas water swelling hydraulic press, comprise tubular cylinder body (1), in cylinder body (1), be provided with piston (2), described piston (2) is connected with piston rod (3), described cylinder body (1) one end is fixed with shutoff seat (4), on shutoff seat (4), have the central through bore (5) with cylinder body (1) internal run-through, described piston (2) is provided with groove (6) towards one end of central through bore (5), the other end is fixed with above-mentioned piston rod (3), described piston (2) sidepiece is provided with circular groove (7), it is characterized in that, in described circular groove (7), be provided with the seal ring (8) of being made by elastic material and the back-up ring (9) of being made by hard material, described seal ring (8) and back-up ring (9) in circular groove (7) along cylinder body (1) axially-aligned, described back-up ring (9) has inclined-plane (10) away from the root outside of seal ring (8) one end and this inclined-plane (10) form triangular ring groove (7) in circular groove (7), in described triangular ring groove (7), be provided with anti-the squeeze ring (12) identical with triangular ring groove (7) shape, the described anti-ring (12) that squeezes is made up of rigid material.
2. the pressurized cylinder of energy-saving extra-high pressure gas water swelling hydraulic press according to claim 1, it is characterized in that, described seal ring (8) comprises base portion (13) and is arranged on epipharynx (14) and the outer lip (15) on base portion (13), and described base portion (13) is with epipharynx (14) and outer lip (15) is connected as a single entity and cross section is Y type.
3. the pressurized cylinder of energy-saving extra-high pressure gas water swelling hydraulic press according to claim 2, is characterized in that, described seal ring (8) compressional deformation is arranged in circular groove (7).
4. according to the pressurized cylinder of the energy-saving extra-high pressure gas water swelling hydraulic press described in claim 2 or 3, it is characterized in that, the thickness of described base portion (13) equates with epipharynx (14) and outer lip (15) thickness.
5. according to the pressurized cylinder of the energy-saving extra-high pressure gas water swelling hydraulic press described in claim 1 or 2 or 3, it is characterized in that, described piston (2) is made up of Cr12 and hardness is not less than HRC60, and the roughness of described piston (2) is 0.2-0.4; Described back-up ring (9) is made up of teflon; Described seal ring (8) is made up of rubber.
6. according to the pressurized cylinder of the energy-saving extra-high pressure gas water swelling hydraulic press described in claim 1 or 2 or 3, it is characterized in that, described shutoff seat (4) comprises the closure part (16) that inserts in cylinder body (1) end, in closure part, the outer end of (16) has ring part (17), and described ring part (17) external diameter equates with cylinder body (1) external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148946.8U CN203856802U (en) | 2014-03-28 | 2014-03-28 | Pressurizing cylinder of energy-saving ultrahigh-pressure water-expansion hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148946.8U CN203856802U (en) | 2014-03-28 | 2014-03-28 | Pressurizing cylinder of energy-saving ultrahigh-pressure water-expansion hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856802U true CN203856802U (en) | 2014-10-01 |
Family
ID=51606656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420148946.8U Expired - Fee Related CN203856802U (en) | 2014-03-28 | 2014-03-28 | Pressurizing cylinder of energy-saving ultrahigh-pressure water-expansion hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856802U (en) |
-
2014
- 2014-03-28 CN CN201420148946.8U patent/CN203856802U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150328 |
|
| EXPY | Termination of patent right or utility model |