CN203584947U - Compact outer control direct operated overflow valve - Google Patents
Compact outer control direct operated overflow valve Download PDFInfo
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- CN203584947U CN203584947U CN201320784977.8U CN201320784977U CN203584947U CN 203584947 U CN203584947 U CN 203584947U CN 201320784977 U CN201320784977 U CN 201320784977U CN 203584947 U CN203584947 U CN 203584947U
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- valve body
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- spool
- sealing
- valve
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Abstract
The utility model relates to a hydraulic valve in the technical field of hydraulic transmission and control, in particular to a compact outer control direct operated overflow valve, which comprises a valve body, a sealing insertion plug, a valve core, a spring and a plug, wherein the valve body is a case of the outer control direct operated overflow valve, a plurality of connecting passages communicated with an executing element are arranged on the valve body in the axial direction, a hole passage is formed in the valve body, the sealing insertion plug and the plug are respectively connected at the two ends of the valve body in a sealed way, the valve core is accommodated in the hole passage and is in sealed butt joint with the inner wall of the hole passage, the hole passage arranged between the plug and the valve core is a cavity P, a cavity T is arranged on the valve core, a cavity A is arranged on the sealing insertion plug, the three cavities respectively correspond to the connection passages arranged on the valve body, the spring is arranged in the cavity P, the two ends of the spring are respectively in butt joint on the plug and one end of the valve core, the other end of the valve core is in sealed butt joint with the sealing insertion plug, and the valve body can axially slide along the hole passage for realizing the closing or communication between the cavity A and the cavity T. The compact outer control direct operated overflow valve has the advantages that the performance is stable, the structure is compact, the cost is low, the realization is easy, and the like.
Description
Technical field
The utility model relates to the hydrovalve in hydraulic transmission and control technique field, specifically a kind of compact type external control direct-acting overflow valve.
Background technique
In hydraulic transmission field, there is the hydrovalve of various functions, form to select for artificer at present.But for relief valve, alternative direct-acting overflow valve product is because structural limitations cannot design external control hydraulic fluid port; And being provided with the pilot operated compound relief valve of external control hydraulic fluid port, its complex structure, expensive, volume is large.In some application, need to determine when need pressure to release according to operating mode, very low to response time requirement again, now select precursor overflow valve can increase cost.Thereby it is simple and compact for structure, stable and reliable for performance to develop one, external control direct-acting overflow valve has become problem demanding prompt solution cheaply.
Model utility content
For the problems referred to above, the purpose of this utility model is to provide a kind of compact type external control direct-acting overflow valve.This external control direct-acting overflow valve is simple and compact for structure, stable and reliable for performance, and cost is low.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises valve body, sealing connector, spool, spring and shutoff, and wherein valve body is the shell of described external control direct-acting overflow valve, has vertically many connecting passages that are connected with executive component on valve body; In described valve body, have duct, described sealing connector and shutoff are sealedly attached to respectively the two ends of valve body; Described spool is placed in the duct of valve body, with the inner wall sealing butt in described duct; Duct between described shutoff and spool is P chamber, and spool is provided with T chamber, and sealing connector is provided with A chamber, the connecting passage that described A chamber, T chamber and P chamber are offered on corresponding described valve body respectively; Described P is provided with spring in chamber, and the two ends of this spring are connected to respectively one end of shutoff and spool, the other end of described spool and sealing connector sealing butt; Described valve body can slide along the axial reciprocating in duct, realizes closing or being communicated with between described A chamber and T chamber.
Wherein: between the other end of described spool and sealing connector, be ball face sealing; One end of described sealing connector is provided with the spherical groove being connected with described A chamber, and the other end of described spool has groove, is equipped with star seal ring in this groove, and described sealing connector and spool form ball face sealing by described spherical groove and star seal ring; On described valve body, the two ends in duct are respectively the conical surface for sealing, and described sealing connector and shutoff are connected with valve body screw thread respectively, are sealing between connector and the conical surface of valve body one end and are being respectively equipped with O-ring seals between shutoff and the conical surface of the valve body the other end;
Connecting passage on described valve body be respectively first connecting passage corresponding with A chamber, with the second connecting passage corresponding to T chamber and three connecting passage corresponding with P chamber, described first, second and third connecting passage is radially offered respectively, and is parallel to each other; Described T chamber is that the part between spool two ends inside contracts and forms, and one end of described spool is by the inner wall sealing butt in O-ring seals and described duct; Described valve body, sealing connector, spool, spring and shutoff coaxially arrange.
Advantage of the present utility model and good effect are:
1. stable performance, safe and reliable.The utility model utilizes spring force and fluid to act on the principle that the power on spool balances each other, adopt spring that the precompression of ball face sealing is provided, application star seal ring and O-ring seals seal, the utility model combines them dexterously, realizes the overflow control to executive component active chamber according to different operating modes.
2. sealing is reliable.Between the utility model spool and sealing connector, form ball face sealing, the sphere of the conical surface on spool and sealing connector can effectively guarantee that star seal ring is reliably fixing, safe and reliable at work.
3. compact structure.The utility model can be selected different spring diameters and wire diameter as required, valve core movement scope very little (3～4mm), and the external control direct-acting overflow valve of 3mm latus rectum, overall dimensions is at 65mm × 32mm × 25mm.
4. cost is low, easily realizes.The utility model adopts the seal ring of standard, the sphere of ball face sealing designed on dismountable part, and simplified processing process, except ball face sealing, not high to requirement on machining accuracy, cost is low, easily realizes.
Accompanying drawing explanation
Fig. 1 is content structure schematic diagram of the present utility model;
Wherein: 1 is valve body, 2 is sealing connector, and 3 is spool, and 4 is spring, 5 is shutoff, and 6 is O-ring seals, and 7 is O-ring seals, and 8 is star seal ring, 9 is O-ring seals, and 10 is O-ring seals, and 11 is spherical groove, 12 is groove, and 13 is duct, and 14 is the conical surface, 15 is A chamber, and 16 is the first connecting passage, and 17 is T chamber, 18 is the second connecting passage, and 19 is P chamber, and 20 is the 3rd connecting passage.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises valve body 1, sealing connector 2, spool 3, spring 4 and shutoff 5, and wherein valve body 1 is the shell of external control direct-acting overflow valve, has vertically many connecting passages that are connected with executive component on valve body 1 from top to bottom; The connecting passage of the present embodiment is three, is respectively the first connecting passage 16, the second connecting passage 18 and 20, three connecting passages of the 3rd connecting passage and radially offers, and be parallel to each other.
The center of valve body 1 has duct 13 vertically, and the two ends in this duct 13 are respectively the conical surface 14 for sealing, and sealing connector 2 is threadedly connected to one end (upper end) of valve body 1, between sealing connector 2 and the conical surface of valve body 1 one end, is provided with O-ring seals 6.Shutoff 5 is threadedly connected to the other end (lower end) of valve body 1, between shutoff 5 and the conical surface of valve body 1 the other end, is provided with O-ring seals 9.
Duct between shutoff 5 and spool 3 is P chamber 19, and spring 4 is contained in this P chamber 19, for ball face sealing provides precompression, and P chamber 19 is corresponding with the 3rd connecting passage 20.Spool 3 is provided with T chamber 17, and this T chamber 17 forms for the part between spool 3 two ends inside contracts, and T chamber 17 is corresponding with the second connecting passage 18; One end of spool 3 is the inner wall sealing butt with duct 13 by O-ring seals 10.Sealing connector 2 is provided with A chamber 15, and this A chamber 15 is corresponding with the first connecting passage 16, and the below in A chamber 15 is connected with spherical groove 11.
Working principle of the present utility model is:
Interior during without pressure in P chamber 19, ball face sealing can maintain the sealing within the scope of setting pressure under the precompression of spring 4, and the fluid between A chamber 15 and T chamber 17 cannot be communicated with.When A chamber 15 internal pressures act on power on spool 3 and exceed the precompression of spring 4, spool 3 is backed down, down sliding, and star seal ring 8 separates with spherical groove 11, A chamber 15 and 17 conductings of T chamber, and A chamber 15 internal pressures release.When there is pressure in P chamber 19, P chamber 19 inner fluids act on power on spool 3 and are greater than A chamber 15 internal pressures and act on the power on spool 3, spool 3 upward slidings, and star formula seal ring 8 and spherical groove 11 butts, ball face sealing is more firm.The utility model can be according to system needs, meet the requirement of oil pressure relief between 0.5～3MPa.
Assembly process of the present utility model is:
First star seal ring 8 is arranged in the groove 12 of spool 3 the other ends, O-ring seals 7 and O-ring seals 10 are arranged on respectively in the annular groove of sealing connector 2 and spool 3, O-ring seals 6, O-ring seals 9 are arranged on respectively to the shoulder of sealing connector 2, shutoff 5, respectively with the conical surface 14 butts at 13 two ends, duct; Spool 3 is packed in the duct 13 of valve body 1, sealing connector 2 is installed on valve body 1; Spring 4 is put into valve body 1, be placed under the end of spool 3 one end; Finally, shutoff 5 is installed, screws.
In sum, the principle that the precompression that the utility model adopts fluid to act on power on spool 3 and spring 4 balances each other, when A chamber 15 internal pressures act on, power on spool 3 is greater than spring 4 precompressions and P chamber 19 internal pressures act on after the power sum on spool 3,15 pressure releases of A chamber, otherwise sealing mutually between each chamber.The utility model has solved according to concrete operating mode, by the problem of the pressure off-load of executive component active chamber.
Claims (7)
1. a compact type external control direct-acting overflow valve, it is characterized in that: comprise valve body (1), sealing connector (2), spool (3), spring (4) and shutoff (5), wherein valve body (1) is the shell of described external control direct-acting overflow valve, has vertically many connecting passages that are connected with executive component on valve body (1); In described valve body (1), have duct (13), described sealing connector (2) and shutoff (5) are sealedly attached to respectively the two ends of valve body (1); Described spool (3) is placed in the duct (13) of valve body (1), with the inner wall sealing butt of described duct (13); Duct between described shutoff (5) and spool (3) is P chamber (19), spool (3) is provided with T chamber (17), sealing connector (2) is provided with A chamber (15), the connecting passage of offering on described A chamber (15), T chamber (17) and P chamber (19) the corresponding described valve bodies of difference (1); In described P chamber (19), be provided with spring (4), the two ends of this spring (4) are connected to respectively one end of shutoff (5) and spool (3), the other end of described spool (3) and sealing connector (2) sealing butt; Described valve body (3) can be along duct the axial reciprocating of (13) slide, realize closing or being communicated with between described A chamber (15) and T chamber (17).
2. by compact type external control direct-acting overflow valve claimed in claim 1, it is characterized in that: between the other end of described spool (3) and sealing connector (2), be ball face sealing.
3. by compact type external control direct-acting overflow valve claimed in claim 2, it is characterized in that: one end of described sealing connector (2) is provided with the spherical groove (11) being connected with described A chamber (15), the other end of described spool (3) has groove (12), in this groove (12), be equipped with star seal ring (8), described sealing connector (2) forms ball face sealing with spool (3) by described spherical groove (11) and star seal ring (8).
4. by compact type external control direct-acting overflow valve claimed in claim 1, it is characterized in that: the two ends in the upper duct (13) of described valve body (1) are respectively the conical surface (14) for sealing, described sealing connector (2) and shutoff (5) are threaded with valve body (1) respectively, are sealing between connector (2) and the conical surface of valve body (1) one end and are being respectively equipped with O-ring seals between shutoff (5) and the conical surface of valve body (1) the other end.
5. by compact type external control direct-acting overflow valve claimed in claim 1, it is characterized in that: the connecting passage on described valve body (1) be respectively first connecting passage (16) corresponding with A chamber (15), with second connecting passage (18) corresponding to T chamber (17) and three connecting passage (20) corresponding with P chamber (19), described first, second and third connecting passage (16,18,20) is radially offered respectively, and is parallel to each other.
6. by the compact type external control direct-acting overflow valve described in claim 1 or 5, it is characterized in that: described T chamber (17) forms for the part between spool (3) two ends inside contracts, and one end of described spool (3) is by the inner wall sealing butt of O-ring seals and described duct (13).
7. by compact type external control direct-acting overflow valve claimed in claim 1, it is characterized in that: described valve body (1), sealing connector (2), spool (3), spring (4) and shutoff (5) coaxially arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784977.8U CN203584947U (en) | 2013-11-30 | 2013-11-30 | Compact outer control direct operated overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784977.8U CN203584947U (en) | 2013-11-30 | 2013-11-30 | Compact outer control direct operated overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584947U true CN203584947U (en) | 2014-05-07 |
Family
ID=50582877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784977.8U Withdrawn - After Issue CN203584947U (en) | 2013-11-30 | 2013-11-30 | Compact outer control direct operated overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675781A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Compact type external controlled direct relief valve |
-
2013
- 2013-11-30 CN CN201320784977.8U patent/CN203584947U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675781A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Compact type external controlled direct relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160824 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |