CN205260892U - Pneumatic limit valve - Google Patents
Pneumatic limit valve Download PDFInfo
- Publication number
- CN205260892U CN205260892U CN201520953810.9U CN201520953810U CN205260892U CN 205260892 U CN205260892 U CN 205260892U CN 201520953810 U CN201520953810 U CN 201520953810U CN 205260892 U CN205260892 U CN 205260892U
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- China
- Prior art keywords
- valve body
- valve
- spool
- sleeve pipe
- air inlet
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- Details Of Valves (AREA)
Abstract
The utility model provides a pneumatic limit valve, includes that cup head square neck screw, nut, case, oil blanket, valve body, core cover, spring housing, split damping ring, sleeve pipe, reset spring and valve are stifled, button head square neck screw passes through the nut to be fixed on the left side top of case, the case sets up in the valve body, be equipped with the oil blanket between the left end face of case and valve body, the right -hand member and the valve body contact face of case are equipped with the core cover, the spring housing passes through split damping ring to be fixed on the right side top of case, place the right side of valve body in the sleeve pipe in, the sleeve pipe left end is connected with the core cover, it is intraductal that reset spring lies in the cover, and the left end cover is established on the spring housing, the valve is stifled fixes the right -hand member face at the valve body, and blocks up in sheathed tube right -hand member mouth department, this pneumatic limit valve is small, the installation of being convenient for, the design of dustproof cap prevents inside pollution, the delay life of receiving of valve body, the leakproofness is strong, can be more accurate spacing, all sealing members all set up on the valve body, are convenient for measure and the installation.
Description
Technical field
The utility model relates to operated pneumatic valve technical field, is specially a kind of pneumatic position-restricted valve.
Background technology
Pneumatic position-restricted valve is as the important a member as in hydraulic system, can extend oil cylinder service life, avoid oil cylinder because clashing into the damage that produces, reducing engine operation amount. At present, the pneumatic position-restricted valve on market has a lot of shortcomings: volume is larger, is difficult for installing; Sealing is not strong, can not accurate limiting, waste energy; Spool or valve that black box is installed mostly block, and are difficult for measuring and installing.
Utility model content
The purpose of this utility model is to provide a kind of pneumatic position-restricted valve, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of pneumatic position-restricted valve, comprises that cup head square neck screw, nut, spool, oil sealing, valve body, core retainer plate, spring housing, split washer, sleeve pipe, back-moving spring and valve are stifled; Described round end square neck screw is fixed on by nut on the top, left side of spool; Described spool is arranged in valve body; Between described spool and the left side of valve body, be provided with oil sealing; The right-hand member of described spool and valve body contact-making surface are provided with core retainer plate; Described spring housing is fixed on by split washer on the top, right side of spool; Described sleeve pipe is built in the right side of valve body; Described sleeve pipe left end is connected with core retainer plate; Described back-moving spring is positioned at sleeve pipe, and left end is set on spring housing; Described valve blocks up the right side that is fixed on valve body, and gets lodged in the right output port place of sleeve pipe.
Further, on described spool, offer groove.
Further, on described valve body, offer air inlet, gas outlet and exhaust outlet; Described air inlet and exhaust outlet homonymy, gas outlet is positioned at the opposite side of air inlet and exhaust outlet.
Further, the left side of described spool and valve body is provided with dust cap; The contact-making surface of described spool and valve body is provided with sealing gasket.
Further, described air inlet, gas outlet and exhaust outlet and valve body between be provided with sealing shroud; Between described air inlet and gas outlet, be equipped with rubber blanket between gas outlet and exhaust outlet.
Further, described oil sealing, sealing gasket, rubber blanket and sealing shroud are all arranged on valve body.
Compared with prior art, the beneficial effects of the utility model are: this pneumatic position-restricted valve volume is little, are convenient to install; The design of dust cap prevents that valve inner is contaminated, postpones service life; Sealing is strong, can be spacing more accurately; All seals are all arranged on valve body, are convenient to measure and install; Avoid oil cylinder thrust ring in the time of end of travel to occur to clash into and produce loud noise, avoid the heat that produces because of shock, improve the service life of hydraulic oil; Improve the service life of oil pump; Reduce engine operation, thereby reduce fuel consume.
Brief description of the drawings
Fig. 1 is the utility model entirety cutaway view.
Reference numeral: 1. cup head square neck screw; 2. nut; 3. dust cap; 4. spool; 5. oil sealing; 6. valve body; 7. sealing gasket; 8. rubber blanket; 9. sealing shroud; 10. core retainer plate; 11. spring housings; 12. split washers; 13. sleeve pipes; 14. back-moving springs; 15. valves are stifled; 41. grooves; P. air inlet; A. gas outlet; O. exhaust outlet.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of pneumatic position-restricted valve, comprises cup head square neck screw 1, nut 2, spool 4, oil sealing 5, valve body 6, core retainer plate 10, spring housing 11, split washer 12, sleeve pipe 13, back-moving spring 14 and valve stifled 15; Described round end square neck screw 1 is fixed on by nut 2 on the top, left side of spool; Described spool 4 is arranged in valve body 6; Between described spool 4 and the left side of valve body 6, be provided with oil sealing 5; The right-hand member of described spool 4 and valve body 6 contact-making surfaces are provided with core retainer plate 10; Described spring housing 11 is fixed on by split washer 12 on the top, right side of spool 4; Described sleeve pipe 13 is built in the right side of valve body 6; Described sleeve pipe 13 left ends are connected with core retainer plate 10; Described back-moving spring 14 is positioned at sleeve pipe 13, and left end is set on spring housing 11; Described valve stifled 15 is fixed on the right side of valve body 6, and gets lodged in the right output port place of sleeve pipe 13.
Further, on described spool 4, offer groove 41.
Further, on described valve body 6, offer air inlet p, gas outlet a and exhaust outlet o; Described air inlet p and exhaust outlet o homonymy, gas outlet a is positioned at the opposite side of air inlet p and exhaust outlet o.
Further, described spool 4 is provided with dust cap 3 with the left side of valve body 6; Described spool 4 is provided with sealing gasket 7 with the contact-making surface of valve body 6.
Further, described air inlet p, gas outlet a and exhaust outlet o and valve body 6 between be provided with sealing shroud 9; Between described air inlet p and gas outlet a, be equipped with rubber blanket 8 between gas outlet a and exhaust outlet o.
Further, described oil sealing 5, sealing gasket 7, rubber blanket 8 and sealing shroud 9 are all arranged on valve body 6.
Of the present utility model in the time of design: compressed air enters valve body 6 by air inlet p, and gas outlet a connects gas controlling lifting valve; While starting working, back-moving spring 14 is in the state of not stressing, and the groove 41 on air inlet p and gas outlet a and spool 4 forms path; Compressed air enters from air inlet p, and groove 41 and gas outlet a on spool 4 enter gas controlling lifting valve; The lifting of gas controlling lifting valve control oil cylinder, in the time being lifted to limits value, oil cylinder pushing cup head square neck screw 1 moves right; The movement of cup head square neck screw 1, band movable valve plug 4 compression reseting springs 14 are toward moving right, and the path between air inlet p and gas outlet a cuts off; Gas controlling lifting valve control oil cylinder continues lifting, further promotes cup head square neck screw 1 and moves right, and exhaust outlet o and gas outlet a can connect by the groove 41 on spool 4; Compressed air in gas controlling lifting valve is the groove 41 on spool 4 by gas outlet a, and by exhaust outlet, o discharges; Gas controlling lifting valve resets to initial position, and oil cylinder stops lifting; After oil cylinder falls after rise, cup head square neck screw 1 is no longer stressed, and back-moving spring 14, under the effect of spring force, promotes spool 4 toward moving left, and returns to initial position.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.
Claims (6)
1. a pneumatic position-restricted valve, comprises that cup head square neck screw, nut, spool, oil sealing, valve body, core retainer plate, spring housing, split washer, sleeve pipe, back-moving spring and valve are stifled; It is characterized in that: described round end square neck screw is fixed on by nut on the top, left side of spool; Described spool is arranged in valve body; Between described spool and the left side of valve body, be provided with oil sealing; The right-hand member of described spool and valve body contact-making surface are provided with core retainer plate; Described spring housing is fixed on by split washer on the top, right side of spool; Described sleeve pipe is built in the right side of valve body; Described sleeve pipe left end is connected with core retainer plate; Described back-moving spring is positioned at sleeve pipe, and left end is set on spring housing; Described valve blocks up the right side that is fixed on valve body, and gets lodged in the right output port place of sleeve pipe.
2. a kind of pneumatic position-restricted valve according to claim 1, is characterized in that: on described spool, offer groove.
3. a kind of pneumatic position-restricted valve according to claim 1, is characterized in that: on described valve body, offer air inlet, gas outlet and exhaust outlet; Described air inlet and exhaust outlet homonymy, gas outlet is positioned at the opposite side of air inlet and exhaust outlet.
4. a kind of pneumatic position-restricted valve according to claim 1, is characterized in that: the left side of described spool and valve body is provided with dust cap; The contact-making surface of described spool and valve body is provided with sealing gasket.
5. a kind of pneumatic position-restricted valve according to claim 3, is characterized in that: between described air inlet, gas outlet and exhaust outlet and valve body, be provided with sealing shroud; Between described air inlet and gas outlet, be equipped with rubber blanket between gas outlet and exhaust outlet.
6. a kind of pneumatic position-restricted valve according to claim 1, is characterized in that: described oil sealing, sealing gasket, rubber blanket and sealing shroud are all arranged on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953810.9U CN205260892U (en) | 2015-11-26 | 2015-11-26 | Pneumatic limit valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953810.9U CN205260892U (en) | 2015-11-26 | 2015-11-26 | Pneumatic limit valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260892U true CN205260892U (en) | 2016-05-25 |
Family
ID=56002421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520953810.9U Active CN205260892U (en) | 2015-11-26 | 2015-11-26 | Pneumatic limit valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260892U (en) |
-
2015
- 2015-11-26 CN CN201520953810.9U patent/CN205260892U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |