CN202768527U - Dustproof air cylinder - Google Patents
Dustproof air cylinder Download PDFInfo
- Publication number
- CN202768527U CN202768527U CN 201220238735 CN201220238735U CN202768527U CN 202768527 U CN202768527 U CN 202768527U CN 201220238735 CN201220238735 CN 201220238735 CN 201220238735 U CN201220238735 U CN 201220238735U CN 202768527 U CN202768527 U CN 202768527U
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- dust
- air cylinder
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- cylinder
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Abstract
The utility model discloses a dustproof air cylinder. The dustproof air cylinder is provided with a cylinder barrel, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixed at the front end and the rear end of the cylinder barrel respectively to form a piston cavity; and a piston rod and a piston fixed on the piston rod are arranged in the piston cavity. The dustproof air cylinder is characterized in that a gland is arranged at the front end of the front end cover and is provided with a through groove; the piston rod penetrates through the front end cover and stretches out of the through groove; the dustproof air cylinder also comprises a dustproof ring and a fastening ring; the dustproof ring is fixed on the side wall of the through groove; a flange is arranged at the front end of the dustproof ring; and the dustproof ring is fixed on the flange. Compared with the prior art, the dustproof air cylinder has high dustproof property.
Description
Technical field
The utility model relates to the pneumatics field, especially a kind of Dust-proof air cylinder.
Background technique
Cylinder in the market generally comprises housing, piston and piston rod, and piston is fixed on the piston rod, and enclosure interior is provided with a piston cavity, and piston and piston rod move reciprocatingly in this piston cavity, drives the mechanical part motion that is connected with piston rod.
In order to prevent that extraneous dust from entering piston cavity, generally adopt a telescopic dirt-proof boot to be fixed on the piston rod of cylinder.When the piston rod fore and aft motion, this dirt-proof boot is fore and aft motion thereupon also.Internal capacity is increased form negative pressure, the dust in the environment is easy to creep in the dirt-proof boot from the space of dirt-proof boot, enters in the piston cavity along the slit between piston rod and the housing.In addition, constantly the also as easy as rolling off a log damage of dirt-proof boot of fore and aft motion is short-lived.
Chinese patent CN 2346979Y discloses a kind of Dust-proof air cylinder, comprises the rapid escape valve that connects dirt-proof boot inner chamber and piston cavity.When the dirt-proof boot cavity volume enlarged, this outlet valve to the dirt-proof boot inner chamber, improved the air pressure of dirt-proof boot inner chamber with the air drawn in the piston cavity.Adopt this structure to be difficult to still really prevent that extraneous dust from entering among the piston cavity, and dirt-proof boot also damage easily.
Chinese patent CN 201991867U discloses a kind of hard dustproof cylinder, and the piston rod of this cylinder stretches out from front cover.In order to reach dustproof effect, be provided with a dust-proof seal ring and back-up ring at the sidewall of front cover.Then, dust still can enter in the piston cavity by this dust ring and back-up ring, and dust-proof effect is still undesirable.
The model utility content
For the deficiencies in the prior art, the purpose of this utility model is the Dust-proof air cylinder that a kind of compact structure, good dustproof effect will be provided.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of Dust-proof air cylinder, this cylinder has a cylinder barrel, front cover and rear end cover, and described front cover and rear end cover are individually fixed in the front-end and back-end of described cylinder barrel, form a piston cavity; Be provided with piston rod and the piston that is fixed on the described piston rod in this piston cavity, the front end of described front cover is provided with a gland, and this gland has a groove; Described piston rod passes this front cover, stretches out from described groove; Also comprise a dust ring and retaining ring, described dust ring is fixed on the described groove sidewall, and its front end is provided with a flange, and described dust ring is fixed on this flange.
Preferably, also comprise a seal ring, described seal ring is fixed in the sidewall of described groove, the rear of described dust ring.
Concrete, the U-shaped seal ring of described seal ring for adopting the fluorine rubber material to make, described retaining ring adopt fluorine rubber to make.
Preferably, embed ringwise some magnet on the described cylinder rear end cover.
Concrete, the piston of described cylinder is provided with the guide ring that adopts bronze tetrafluoro rubber to make.
In the above-mentioned preferred implementation, also comprise a selector valve, comprise some valve pockets and a spool, described valve pocket is communicated with described piston cavity.
Further, described spool is being provided with the valve body flange that the cross sectional area of a taper diminishes gradually near the valve pocket end; Described valve pocket be provided with one near the spool end and become gradually large extension with the cross section of taper corresponding to described valve body flange.
Further, also comprise link and the pin of a V shape, this link is fixed in the right-hand member of described piston rod by screw thread, and described pin is fixed in the joint of described piston rod and described link.
The beneficial effect of Dust-proof air cylinder described in the utility model is:
1, retaining ring is held the flange of dust ring tightly, has improved greatly the dust blowing ability of dust ring to piston rod, Effective Raise the dirt exclusion capabilities of cylinder;
2, dust ring adopts bronze and teflon to make, and has that hardness is higher, wear-resisting property good, high temperature resistant, but also has the function of selflubricating;
3, seal ring adopts fluorine rubber to make, and is not only high temperature resistant, and the effect that can play sealing and again prevent dust;
4, embed magnet on the rear end cover, be used for locking behind the magnetic, prevent from loading on landing when not having air pressure.
5, connecting rod is connected with pin by screw thread, and this cylinder still can be worked under strong vibration and instantaneous flexural load;
6, the end of spool arranges the spool flange, and the valve pocket end is provided with the extension corresponding with described spool flange, the working life of greatly having improved selector valve.
In order to understand fully the purpose of this utility model, feature and effect, be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation.
Description of drawings
Fig. 1 is the structural representation of the utility model Dust-proof air cylinder;
Fig. 2 is the enlarged diagram at B place among Fig. 1;
Fig. 3 is the cross-sectional view at A-A place among Fig. 1;
Fig. 4 is the structural representation of spool and valve pocket;
Among the figure:
The 1-cylinder barrel; The 11-piston cavity; The 12-piston; The 121-damper piston; The 122-guide ring; The 13-piston rod; The 14-link; The 141-pin; The 15-gland; The 151-seal ring; The 152-dust ring; The 153-fastening ring; The 16-front cover; The 17-rear end cover; The 171-electromagnet; The 2-selector valve; The 21-spool; The 211-valve core rod; 212-spool plug; The 2121-valve body flange; The 22-valve body; The 221-valve pocket; The 2211-extension.
Embodiment
As shown in Figures 1 to 4, a kind of Dust-proof air cylinder, this cylinder have cylinder barrel 1, front cover 16 and the rear end cover 17 of hollow, and this front cover 16 and rear end cover 17 are individually fixed in the front-end and back-end of cylinder barrel 1, form piston cavity 11.Be provided with a piston 12 and piston rod 13 in this piston cavity 11, this piston 12 is fixed on the piston rod 13, moves back and forth back and forth with the axial direction of piston rod 13 along piston cavity 11.In order to pass through the mobile movement that promotes the exterior mechanical parts of piston rod 13, an end of this piston rod 13 stretches out from front cover 16.
Because piston rod 13 stretches out from front cover 16, the dust in the external environment is as easy as rolling off a log to be entered in the piston cavity 11 by the slit between piston rod 13 and the front cover 16, causes piston 12 to move difficulty, reduces efficient and the life-span of cylinder operation.In order to prevent that dust from entering in the piston cavity 11, be fixed with a gland 15 at the front end (being the outside of front cover 16) of this front cover 16.The middle part of gland 15 is provided with a groove, and piston rod 13 stretches out from this groove.
See also Fig. 2, Fig. 2 is the enlarged diagram at B place among Fig. 1.In order further to improve the dirt exclusion capabilities of cylinder, the sidewall of this groove is provided with dust ring 152.Dust ring 152 adopts bronze powders and tetrafluoroethylene material to make, and has good and high temperature resistant, the characteristic that can selflubricating of hardness height, wear resistance.The front end of dust ring 152 is provided with a flange, is used for moving back and forth the process dust blowing at piston rod 13.For this flange is held tightly, on this flange, also be provided with a retaining ring 153, these retaining ring 153 employing fluorine rubber materials making can not only be held tightly flange, but also can play the effect of dust sealing.Also be provided with a seal ring 151 at the rear of this groove sidewall, dust ring 152 and retaining ring 153.The U-shaped seal ring that sealing circle 151 also adopts fluorine rubber to make not only plays the effect of sealing, and can also play the dustproof effect in two roads.
For the side prevents cylinder in use, load landing when the chamber does not have air pressure for level before and after the cylinder.On cylinder rear end cover 17, also be provided with some electromagnet 171 that along the circumferential direction arrange.Circumferential surface at this piston 12 also is provided with a guide ring 122, and this guide ring 122 adopts bronze tetrafluoro wear-resistant strip to make.
See also Fig. 3, Fig. 3 is the cross-sectional view at A-A place among Fig. 1.This cylinder also comprises a selector valve 2, and this selector valve 2 is connected with the air outlet with the suction port of cylinder.Suction port and air outlet are communicated with left and right two chambers that formed by piston 12 piston separator chambeies 11 respectively.This selector valve 2 comprises spool 21 and valve body 22, and valve body 22 inside are provided with some valve pockets 221, and each valve pocket 221 is communicated with the outlet of a selector valve.Spool 21 comprises valve core rod 211 and is fixed in spool plug 212 on the valve core rod 211, and two adjacent valve pockets 221 move up and down by the spool plug 212 on the valve core rod 211 and are communicated with or closed, changes connected relation between the outlet of selector valve with this.
See also Fig. 4, Figure 4 shows that the structural representation of valve pocket 221 and spool 21.Spool plug 212 is provided with the valve body flange 2121 that a taper is protruded in the end near valve pocket 221 ends; Be provided with an extension 2211 corresponding with valve body flange 2121 at valve pocket 221 near spool plug 212 ends, this extension is tapered.During use, the valve body flange 2121 of this taper embeds among this extension 2211, realizes two adjacent valve pockets 221 are isolated.
In order to make things convenient for piston rod 13 to drive other mechanical part motions, the end of these piston rod 13 external parts is threaded connection the link 14 of a V shape, this is provided with a pin 141 in the threaded connection place, prevent that effectively link 14 from returning the problem of pine easily, even be that cylinder still can work under the operating mode of strong vibration, strong instantaneous flexural load.
With respect to prior art, the flange that the retaining ring of Dust-proof air cylinder described in the utility model is held dust ring tightly carries out dust blowing to piston rod, Effective Raise the dirt exclusion capabilities of cylinder; Dust ring adopts bronze and teflon making, has that hardness is higher, wear-resisting property good, high temperature resistant, and function that can also selflubricating; Seal ring adopts fluorine rubber to make, and is not only high temperature resistant, and the effect that can play sealing and again prevent dust; Embed high-strength magnet on the rear end cover, for the side prevents cylinder in use, load landing when the chamber does not have air pressure for level before and after the cylinder.Connecting rod is connected with pin by screw thread, this storming still can be worked under strong vibration and instantaneous flexural load; The end of spool arranges the spool flange, and the valve nozzle end arranges the extension corresponding with described spool flange, the working life of greatly having improved selector valve.
More than describe preferred embodiment of the present utility model in detail, the ordinary skill that should be appreciated that related domain need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all in the art technician according to the utility model design on the prior art basis by logical analysis, reasoning or according to the available technological scheme of limited experiment, all should be among the determined protection domain by these claims.
Claims (8)
1. Dust-proof air cylinder, this cylinder has a cylinder barrel, front cover and rear end cover, and described front cover and rear end cover are individually fixed in the front-end and back-end of described cylinder barrel, form a piston cavity; Be provided with piston rod and the piston that is fixed on the described piston rod in this piston cavity, it is characterized in that the front end of described front cover is provided with a gland, this gland has a groove; Described piston rod passes this front cover, stretches out from described groove; Also comprise a dust ring and retaining ring, described dust ring is fixed on the described groove sidewall, and its front end is provided with a flange, and described dust ring is fixed on this flange.
2. Dust-proof air cylinder as claimed in claim 1 is characterized in that, also comprises a seal ring, and described seal ring is fixed in the sidewall of described groove, the rear of described dust ring.
3. Dust-proof air cylinder as claimed in claim 2 is characterized in that, the U-shaped seal ring of described seal ring for adopting the fluorine rubber material to make, described retaining ring adopt fluorine rubber to make.
4. Dust-proof air cylinder as claimed in claim 3 is characterized in that, embeds ringwise some magnet on the described cylinder rear end cover.
5. Dust-proof air cylinder as claimed in claim 4 is characterized in that, the piston of described cylinder is provided with the guide ring that adopts bronze tetrafluoro rubber to make.
6. such as each described Dust-proof air cylinder of claim 1-5, it is characterized in that, also comprise a selector valve, comprise some valve pockets and a spool, described valve pocket is communicated with described piston cavity.
7. Dust-proof air cylinder as claimed in claim 6 is characterized in that, the valve body flange that described spool diminishes gradually at the cross sectional area that is provided with a taper near the valve pocket end; Described valve pocket be provided with one near the spool end and become gradually large extension with the cross section of taper corresponding to described valve body flange.
8. Dust-proof air cylinder as claimed in claim 7 is characterized in that, also comprises link and the pin of a V shape, and this link is fixed in the right-hand member of described piston rod by screw thread, and described pin is fixed in the joint of described piston rod and described link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238735 CN202768527U (en) | 2012-05-24 | 2012-05-24 | Dustproof air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238735 CN202768527U (en) | 2012-05-24 | 2012-05-24 | Dustproof air cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768527U true CN202768527U (en) | 2013-03-06 |
Family
ID=47775107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238735 Expired - Lifetime CN202768527U (en) | 2012-05-24 | 2012-05-24 | Dustproof air cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768527U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498833A (en) * | 2013-10-17 | 2014-01-08 | 济南夫驰科技有限公司 | Air cylinder with end cover sealing structure |
| CN104373417A (en) * | 2014-10-28 | 2015-02-25 | 奉化鑫益气动工程有限公司 | Dust removal air cylinder |
| CN106523466A (en) * | 2016-12-30 | 2017-03-22 | 安徽泰富重工制造有限公司 | Dust cover for air cylinders |
| EP3486501A1 (en) * | 2017-11-17 | 2019-05-22 | Hamilton Sundstrand Corporation | Actuator assembly having self-lubricating components |
-
2012
- 2012-05-24 CN CN 201220238735 patent/CN202768527U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498833A (en) * | 2013-10-17 | 2014-01-08 | 济南夫驰科技有限公司 | Air cylinder with end cover sealing structure |
| CN104373417A (en) * | 2014-10-28 | 2015-02-25 | 奉化鑫益气动工程有限公司 | Dust removal air cylinder |
| CN106523466A (en) * | 2016-12-30 | 2017-03-22 | 安徽泰富重工制造有限公司 | Dust cover for air cylinders |
| EP3486501A1 (en) * | 2017-11-17 | 2019-05-22 | Hamilton Sundstrand Corporation | Actuator assembly having self-lubricating components |
| US10794487B2 (en) | 2017-11-17 | 2020-10-06 | Hamilton Sunstrand Corporation | Actuator assembly having self-lubricating components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |