CN203926906U - A kind of spool-type valves - Google Patents
A kind of spool-type valves Download PDFInfo
- Publication number
- CN203926906U CN203926906U CN201420329025.1U CN201420329025U CN203926906U CN 203926906 U CN203926906 U CN 203926906U CN 201420329025 U CN201420329025 U CN 201420329025U CN 203926906 U CN203926906 U CN 203926906U
- Authority
- CN
- China
- Prior art keywords
- spool
- groove
- valve body
- valve
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The utility model relates to a kind of spool-type valves, comprise valve body, valve body hole, can be in valve body hole axially movable sliding valve core, in described valve body hole, be provided with annular undercut groove, be provided with equally several circular grooves on described spool, the shoulder between spool circular groove hides undercut groove; Axial direction at described spool offers axial triangle groove, on the end face of spool, offers annular groove; Described undercut groove communicates with the main hydraulic fluid port on valve body bottom surface, and the aperture of described main hydraulic fluid port is all identical.The utility model, by annular groove is set, to change the flowing state of liquid, avoids producing whirlpool and pressure wave, reduces the noise of fluid, improves usability and the working life of valve; By axial triangle groove is set, reduce the vibration at spool place.
Description
Technical field
the utility model belongs to field of hydraulic control, relates to a kind of selector valve, relates in particular to a kind of spool that utilizes with respect to the relative sliding of valve body, realizes the spool-type valves of oil circuit break-make or flow direction change.
Background technique
hydraulic control valve is the control unit in hydraulic system, and its function is to control the flow direction, pressure and the flow of liquid in hydraulic system, so that the operation mechanism of hydraulic actuator and driving thereof obtains needed moving direction, movement velocity and thrust etc.
in sliding valve style, rotary valve and ball-valve type selector valve, spool-type valves is most widely used in hydraulic system, it is to utilize spool with respect to the relative sliding of valve body, realizes oil circuit break-make or flow direction change, thus realize hydraulic actuator startup, stop or the conversion of moving direction.
at present, when selector valve commutates fast, the pressure of oil circuit can sharply rise, to such an extent as to produces percussive pressure noise; If suddenly commutation makes acceleration a that executive component produces when large (a > > 0.3g), can produce percussive pressure vibration noise.In order to reduce percussive pressure noise, common measure has: 1, on changeover valve core, be provided with the conical surface or triangle throttling groove, make the flow area of valve port gradual; 2, select as much as possible the selector valve of DC electromagnet; 3, adopt electro-hydraulic proportion reversing valve, and delay main valve turn around time by damping adjusting device, or pilot control pressure is adjusted to the main valve plug needed minimum pressure that commutates; 4, on oil hydraulic cylinder, be provided with buffer structure, to relax impact force.Percussive pressure noise during above-mentioned said several reduction selector valve work, still needs further to be improved.
Model utility content
the utility model, in order to overcome deficiency of the prior art, provides a kind of spool-type valves, and this valve can reduce the noise producing due to hydraulic shock effectively.
the utility model is to be achieved through the following technical solutions:
a spool-type valves, comprise valve body, valve body hole, can be in valve body hole axially movable sliding valve core, in described valve body hole, be provided with annular undercut groove, on described spool, be provided with equally several circular grooves, the shoulder between spool circular groove hides undercut groove; Axial direction at described spool offers axial triangle groove, on the end face of spool, offers annular groove.
as optimal technical scheme of the present utility model, the diameter of the biggest place of described axial triangle groove is valve core diameter 1/4th, and the groove width of described annular groove is valve core diameter 1/8th.
as optimal technical scheme of the present utility model, described undercut groove communicates with the main hydraulic fluid port on valve body bottom surface, and the aperture of described main hydraulic fluid port is all identical.
compared with prior art, the beneficial effects of the utility model are: the utility model, by annular groove is set, to change the flowing state of liquid, avoids producing whirlpool and pressure wave, reduce the noise of fluid, improve usability and the working life of valve; By axial triangle groove is set, reduce the vibration at spool place.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
fig. 2 is the end view drawing of spool in the utility model.
in figure: 1-valve body; 2-sliding valve core; 3-undercut groove; 4-shoulder; 5-annular groove; The axial triangle groove of 6-; 10-valve body hole.
Embodiment
in order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
refer to Fig. 1 and Fig. 2, Fig. 1 is structural representation of the present utility model, and Fig. 2 is the end view drawing of spool in the utility model.
described a kind of spool-type valves, comprise the valve body 1 made by spheroidal graphite cast iron, valve body hole 10, can be at the interior axially movable sliding valve core 2 of valve body hole 10, sliding valve core 2 adopts high alloy-structural steel, make it have good wear resistance, linear expansion coefficient and amount of deformation little, in order to improve the intensity of spool, must make the surface of material reach certain hardness (General Requirements is greater than 58HRC).In described valve body hole 10, be provided with annular undercut groove 3, on described spool 2, be provided with equally several circular grooves, the shoulder 4 between spool 2 circular grooves hides undercut groove 3; On described spool 2, be provided with equally several circular grooves, the shoulder 4 between spool 2 circular grooves hides undercut groove 3; During oil sealing, spool land 4 not only hides undercut groove 3, also the valve body hole of undercut groove 3 sides 10 is hidden to a segment length, when shoulder 4 does not hide undercut groove 3, this oil circuit just can communicate with other oil circuits, and now, between shoulder 4 and undercut groove 3, the axial length of opening is called opening length.Described undercut groove 3 communicates with the main hydraulic fluid port (P, A, B, T) on valve body 1 bottom surface, and the aperture of described main hydraulic fluid port (P, A, B, T) is all identical, and the number of undercut groove 3 and the number of shoulder 4 and the function of valve, performance, volume and technique have direct relation.
axial direction at described spool 2 offers axial triangle groove 6, offers annular groove 5 on the end face of spool 2.The diameter of the biggest place of described axial triangle groove 6 is 1/4th of spool 2 diameters, and the groove width of described annular groove 5 is 1/8th of spool 2 diameters.The utility model, by annular groove is set, to change the flowing state of liquid, avoids producing whirlpool and pressure wave, reduces the noise of fluid, improves usability and the working life of valve; By axial triangle groove is set, reduce the vibration at spool place.
the utility model the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a spool-type valves, comprise valve body (1), valve body hole (10), can be in valve body hole (10) axially movable sliding valve core (2), in described valve body hole (10), be provided with annular undercut groove (3), described spool is provided with several circular grooves on (2) equally, and the shoulder (4) between spool (2) circular groove hides undercut groove (3); It is characterized in that:
Axial direction at described spool (2) offers axial triangle groove (6), offers annular groove (5) on the end face of spool (2).
2. a kind of spool-type valves according to claim 1, is characterized in that: the diameter of the biggest place of described axial triangle groove (6) is 1/4th of spool (2) diameter, and the groove width of described annular groove (5) is 1/8th of spool (2) diameter.
3. a kind of spool-type valves according to claim 1, is characterized in that: described undercut groove (3) communicates with the main hydraulic fluid port (P, A, B, T) on valve body (1) bottom surface, and the aperture of described main hydraulic fluid port (P, A, B, T) is all identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329025.1U CN203926906U (en) | 2014-06-20 | 2014-06-20 | A kind of spool-type valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329025.1U CN203926906U (en) | 2014-06-20 | 2014-06-20 | A kind of spool-type valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926906U true CN203926906U (en) | 2014-11-05 |
Family
ID=51822718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420329025.1U Expired - Fee Related CN203926906U (en) | 2014-06-20 | 2014-06-20 | A kind of spool-type valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503381A (en) * | 2021-08-10 | 2021-10-15 | 宁波诚天液压有限公司 | Pneumatic control pressure regulating reversing element |
-
2014
- 2014-06-20 CN CN201420329025.1U patent/CN203926906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503381A (en) * | 2021-08-10 | 2021-10-15 | 宁波诚天液压有限公司 | Pneumatic control pressure regulating reversing element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PL1669632T3 (en) | Shock absorber with a damping force depending on the amplitude | |
| CN102943909B (en) | Differential type water hydraulic relief valve | |
| CN203809397U (en) | Slide valve type reversing valve | |
| SE1651237A1 (en) | Hydraulic damping appliance | |
| CN110131433B (en) | Switching valve capable of increasing response time | |
| CN203926906U (en) | A kind of spool-type valves | |
| CN110748523A (en) | Electrohydraulic reversing valve with buffer valve core | |
| CN103758913A (en) | Mixed mode magneto-rheological shock absorber | |
| CN110094379A (en) | A kind of hydraulic directional valve | |
| CN204140908U (en) | High energy dissipating large flux control valve | |
| CN207470841U (en) | Spool, solenoid directional control valve | |
| CN102562917B (en) | Main-control hydraulic damper | |
| CN105156703A (en) | Regulating gate valve | |
| CN102116380A (en) | High-speed heavy-load linear reciprocating buffer reversing valve | |
| CN211648637U (en) | Electrohydraulic reversing valve with buffer valve core | |
| CN208417126U (en) | Clamping cylinder | |
| CN203879832U (en) | Pure water hydraulic throttle valve | |
| CN204200736U (en) | A kind of spool-type valves | |
| CN204553877U (en) | The full balance stop valve of ultrahigh pressure | |
| CN103697184B (en) | A kind of through-flow structure of valve port of slide valve | |
| CN203809774U (en) | Multi-path reversing valve | |
| CN204591844U (en) | A kind of hydraulicdirectional control valve | |
| CN202946467U (en) | Electric hydraulic control one-way valve | |
| CN111412194A (en) | Oil cylinder with buffering function | |
| CN215890649U (en) | Hydraulic one-way valve |
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: 20141105 Termination date: 20160620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |