CN202118021U - One-way structure of hydraulic one-way valve - Google Patents
One-way structure of hydraulic one-way valve Download PDFInfo
- Publication number
- CN202118021U CN202118021U CN2011202081664U CN201120208166U CN202118021U CN 202118021 U CN202118021 U CN 202118021U CN 2011202081664 U CN2011202081664 U CN 2011202081664U CN 201120208166 U CN201120208166 U CN 201120208166U CN 202118021 U CN202118021 U CN 202118021U
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- way
- oil inlet
- valve
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Abstract
A one-way structure of a hydraulic one-way valve comprises a valve body and a valve core. The valve body is provided with an installation hole and an oil inlet hole, the installation hole and the oil inlet hole are communicated, and the valve core is mounted with the valve body in clearance fit mode through the installation hole. The valve core is provided with a through hole which is communicated with the oil inlet hole in penetrating mode, and the valve core is further provided with an annular groove which is communicated with the through hole through a by-pass port. The one-way structure of the hydraulic one-way valve is characterized in that a one-way seal ring made of rubber is sleeved in the annular groove, and the cross section of the one-way seal ring is in a shape of a reversed U likeness with the opening toward an oil inlet gap. The one-way structure of the hydraulic one-way valve has no high requirement for machining precision of parts, is simple in manufacture and installation, low in cost, simple in structure, small in volume and high in reliability and has high practical effect. Sealing parts are not easy to damage.
Description
Technical field
The utility model relates to the pressure controlled valve field of components, especially a kind ofly is used for the check configuration that hydraulic pressures is no more than the hydraulically-controlled one-way valve of 20MPa.
Background technique
The check configuration of existing hydraulically-controlled one-way valve mainly relies on machining accuracy to guarantee hydraulically-controlled one-way valve reverse leakage amount, present hydraulically-controlled one-way valve check configuration, and it is in the periphery of spool groove to be set; In groove, be provided with movable steel ball, when work, the hydraulic oil of high pressure is full of groove through going out oil-gap; Steel ball is blocked the by-pass hole that is provided with between groove and the working connection under pressure; Under the situation of the fluctuation of load, raise suddenly, steel ball is pushed away, and realizes carrying out pressure release through the fit up gap between groove and the draining hole; Realize control oil channel pressure and working connection pressure balance; Reduce the risk of hydraulic system, but present domestic production technology does not reach the level of external advanced country yet fully, the hard sealing of intermetallic needs machining accuracy to reach mirror ultrafinish just can reach the little requirement of reverse leakage amount; Cause the manufacture cost of hydraulically-controlled one-way valve too high, and volume is excessive.
The model utility content
The utility model technical problem to be solved is; Check configuration processing cost to existing hydraulically-controlled one-way valve is high, and the problem that volume is big and poorly sealed provides a kind of cost low; Volume simple in structure is little; Seal the check configuration of tight hydraulically-controlled one-way valve, this check configuration also has not fragile, high reliability features.
In order to solve the problems of the technologies described above, the utility model provides a kind of check configuration of hydraulically-controlled one-way valve, comprises valve body, spool; Said valve body has mounting hole and oil inlet hole, and this mounting hole is communicated with oil inlet hole, and said spool is installed through mounting hole and said valve body Spielpassung; Said spool has the through hole that runs through that is communicated with said oil inlet hole; Said spool also is provided with circular groove, and this circular groove is communicated with through by-pass hole with said through hole, it is characterized in that; Be with the one-way sealing circle of being processed by rubber in the said circular groove, said one-way sealing ring cross-section is opening towards inverted type of " U " shape that goes out oil-gap.
Also be provided with filter screen between said oil inlet hole and the through hole.
The good effect of the utility model is:
1. adopt rubber parts to carry out face seal, sealing is tight, and is not high to the requirement on machining accuracy of part, and manufacturing and installation are simple, and cost is low.
2. simple in structure, volume is little.
3. Sealing is not fragile, and reliability is high, has good practical effect.
Description of drawings
The structural representation of Fig. 1 the utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is done further explain.
As shown in Figure 1; The check configuration of the described hydraulically-controlled one-way valve of the utility model comprises valve body 4, spool 2, and valve body 4 has mounting hole and oil inlet hole 6; This mounting hole is communicated with oil inlet hole 6; Spool 2 is installed through mounting hole and valve body 4 Spielpassung, and spool 2 has the through hole that runs through 7 that is communicated with oil inlet hole 6, and this through hole is working connection; Spool 2 also is provided with circular groove 5; This circular groove 5 is communicated with through by-pass hole 8 with through hole 7; Be with one-way sealing circle 1 in the circular groove 5; This one-way sealing circle 1 is processed by rubber, and one-way sealing circle 1 cross section is opening towards inverted type of " U " shape that goes out oil-gap, between oil inlet hole 6 and through hole 7, also is provided with filter screen 3.
Under the original state; Hydraulic oil gets into from oil inlet hole 6, gets in the working connection of spool 2 through filter screen 3, gets in the control oil channel at last; Hydraulic oil is through the fit up gap entering circular groove 5 of spool 2 with valve body 4 simultaneously; The opening end of the one-way sealing circle 1 of circular groove 5 suits is under the hydraulic pressure effect, and the skirt mouth limit of one-way sealing circle 1 is expanded to the periphery, realizes the oil circuit sealing.When working connection is closed; If the pressure in the control oil channel raises suddenly under the situation of the fluctuation of load; Because the existence of by-pass hole 8, the effect that the skirt mouth limit of one-way sealing circle 1 is stressed can inwardly be shunk down, and this moment is through carrying out pressure release in the fit up gap between circular groove 5 and the draining hole 9; Realize control oil channel pressure and working connection pressure balance, reduce the risk of hydraulic system.
The utility model is simple in structure, and volume is little, owing to adopt the one-way sealing circle 1 of rubber material, realize becoming face seal by linear sealing, and good sealing effect, not high to the requirement on machining accuracy of part, manufacturing and installation are simple, and cost is low.And Sealing is not fragile, and reliability is high, has good practical effect.
The foregoing description of the utility model only is to give an example for what explanation the utility model was done, and is not to be the qualification to the mode of execution of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation and changes.Here can't give exhaustive to all mode of executions.Conspicuous variation that every technological scheme that belongs to the utility model is amplified out or change still are in the row of the protection domain of the utility model.
Claims (2)
1. the check configuration of a hydraulically-controlled one-way valve; Comprise valve body (4), spool (2); Said valve body (4) has mounting hole and oil inlet hole (6), and this mounting hole is communicated with oil inlet hole (6), and said spool (2) is installed through mounting hole and said valve body (4) Spielpassung; Said spool (2) has the through hole that runs through (7) that is communicated with said oil inlet hole (6); Said spool (2) also is provided with circular groove (5), and this circular groove (5) is communicated with through by-pass hole (8) with said through hole (7), it is characterized in that; Be with the one-way sealing circle of being processed by rubber (1) in the said circular groove (5), said one-way sealing circle (1) cross section is opening towards inverted type of " U " shape that goes out oil-gap.
2. the check configuration of hydraulically-controlled one-way valve according to claim 1 is characterized in that, also is provided with filter screen (3) between said oil inlet hole (6) and the through hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202081664U CN202118021U (en) | 2011-06-20 | 2011-06-20 | One-way structure of hydraulic one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202081664U CN202118021U (en) | 2011-06-20 | 2011-06-20 | One-way structure of hydraulic one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118021U true CN202118021U (en) | 2012-01-18 |
Family
ID=45459090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202081664U Expired - Lifetime CN202118021U (en) | 2011-06-20 | 2011-06-20 | One-way structure of hydraulic one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118021U (en) |
-
2011
- 2011-06-20 CN CN2011202081664U patent/CN202118021U/en not_active Expired - Lifetime
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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: 20120118 |