CN203560523U - Hydraulic control check valve - Google Patents
Hydraulic control check valve Download PDFInfo
- Publication number
- CN203560523U CN203560523U CN201320649778.6U CN201320649778U CN203560523U CN 203560523 U CN203560523 U CN 203560523U CN 201320649778 U CN201320649778 U CN 201320649778U CN 203560523 U CN203560523 U CN 203560523U
- Authority
- CN
- China
- Prior art keywords
- check valve
- hydraulic control
- oil
- seal groove
- spool
- 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 - Lifetime
Links
- 239000000945 filler Substances 0.000 claims description 12
- 239000003921 oil Substances 0.000 abstract description 27
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a check valve used in the hydraulic industry, particularly to a hydraulic control check valve. The hydraulic control check valve comprises a hexagon nut seat, a valve element and a check valve sleeve, wherein a bulge extending in the radial direction is arranged in the middle of an inner cavity of the check valve sleeve, the inner cavity of the check valve sleeve is divided into an oil inlet cavity and an oil return cavity by the bulge, and the valve element is arranged in the oil return cavity; one end, corresponding to the oil inlet cavity, of the check valve sleeve is in threaded connection with the hexagon nut seat; and a hole check ring is arranged at one end of one side, corresponding to the oil return cavity, of the valve element. According to the hydraulic control check valve, the hydraulic control check valve can open naturally as long as unloading or pressure of hydraulic oil of a hydraulic control port drops below a certain proportion of a pressure valve of an oil inlet, so that little energy is consumed; the valve element is opened by the aid of the pressure drop, so that the vibration and impact are small; a spring is omitted, so that the structure is simplified, machining and assembly costs are reduced, and the reliability is increased.
Description
Technical field
The utility model relates to the one-way valve using in Hydraulic Industry, specifically a kind of Pilot operated check valve.
Background technique
Traditional Pilot operated check valve need to be used spring structure, pressed spool, realizes one-way valve effect, makes hydraulic oil reverse flow for one-way valve is opened, hydraulic coupling and the spring force that need to provide larger hydraulic coupling to overcome oil outlet at the hydraulic control mouth of Pilot operated check valve, consume compared with multiple-energy-source.In some use occasion, do not have so large hydraulic coupling to push the spool of traditional Pilot operated check valve open, but will meet difficulty while needing to realize similar function.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of simple in structure, ingenious, rational Pilot operated check valve is provided, this one-way valve can be realized in the occasion of lower hydraulic control power the function of Pilot operated check valve, reduces the consumption of the energy, reduces the vibrations of opening.
The technological scheme providing according to the utility model: a kind of Pilot operated check valve, be characterised in that: comprise hexagon nut seat, spool, unidirectional valve pocket, described unidirectional valve pocket inner chamber middle part has a projection of radially extending, described projection is divided into oil suction chamber and oil back chamber by unidirectional valve pocket inner chamber, spool is placed in described oil back chamber, described unidirectional valve pocket is connected on described hexagon nut seat corresponding to oil suction chamber threaded one end, and spool is provided with hole back-up ring corresponding to oil back chamber one side end.
As further improvement of the utility model, described one-way valve puts and offers filler opening, return opening, hydraulic control mouth, and wherein filler opening is linked up described oil suction chamber, and return opening is linked up described oil back chamber, and hydraulic control mouth is located at unidirectional valve pocket outboard end.
As further improvement of the utility model, between described spool and described oil back chamber inwall, be provided with the 2nd O RunddichtringO.
As further improvement of the utility model, on described hexagon nut seat, offer the 3rd seal groove, in described the 3rd seal groove, be provided with the 4th O RunddichtringO.
As further improvement of the utility model, described one-way valve puts and offers the first seal groove, the second seal groove, wherein in the first seal groove, be provided with the first rubber back-up ring, an O RunddichtringO, in the second seal groove, be provided with the second rubber back-up ring, the 3rd O RunddichtringO.
Compared with prior art, advantage is the utility model: the utility model if the hydraulic oil off-load of hydraulic control mouth or pressure drop below the certain proportion of inlet pressure numerical value, Pilot operated check valve is opened naturally, consumes little energy; Owing to being the unlatching that depended on pressure decline realizes spool, shake and impact little; Remove spring, simplified the structure and reduced processing and assembly cost, increased reliability.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model.
Fig. 2 is hydraulic schematic diagram of the present utility model.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, comprise unidirectional valve pocket 1, back-up ring 2 for hole, the first rubber back-up ring 3, an O RunddichtringO 4, the 2nd O RunddichtringO 5, spool 6, the second rubber back-up ring 7, the 3rd O RunddichtringO 8, hexagon nut seat 9, the 4th O RunddichtringO 10, the first seal groove 11, the second seal groove 12, the 3rd seal groove 13, projection 14, oil suction chamber 15, oil back chamber 16, return opening 17, hydraulic control mouth 18, filler opening 19 etc.
As shown in Figure 1 and Figure 2, a kind of Pilot operated check valve of the utility model, comprise hexagon nut seat 9, spool 6, unidirectional valve pocket 1, described unidirectional valve pocket 1 inner chamber middle part has a projection 14 of radially extending, described protruding 14 are divided into oil suction chamber 15 and oil back chamber 19 by unidirectional valve pocket 1 inner chamber, spool 6 is placed in described oil back chamber 19, and described unidirectional valve pocket 1 is connected on described hexagon nut seat 9 corresponding to oil suction chamber 15 threaded one ends, and spool 6 is provided with back-up ring 2 for hole corresponding to oil back chamber 19 1 side ends.
On described unidirectional valve pocket 1, offer filler opening 19, return opening 17, hydraulic control mouth 18, wherein filler opening 19 is linked up described oil suction chamber 15, and return opening 17 is linked up described oil back chamber 19, and hydraulic control mouth 18 is located at unidirectional valve pocket 1 outboard end.
Between described spool 6 and described oil back chamber 19 inwalls, be provided with the 2nd O RunddichtringO 5.
On described hexagon nut seat 9, offer the 3rd seal groove 13, in described the 3rd seal groove 13, be provided with the 4th O RunddichtringO 10.
On described unidirectional valve pocket 1, offer the first seal groove 11, the second seal groove 12, wherein in the first seal groove 11, be provided with in the first rubber back-up ring 3, O RunddichtringO 4, the second seal grooves 12 and be provided with the second rubber back-up ring 7, the 3rd O RunddichtringO 8.
As shown in Figure 2, working principle of the present utility model is as follows: the pressure oil that is greater than filler opening 19 and return opening 17 when the hydraulic control mouth 18 of spool 6 is stressed is during to the making a concerted effort of spool 6, and spool 6 is closed, now, return opening 17 is obstructed to filler opening 19, and filler opening 19 is obstructed to return opening 17.When the stressed pressure oil that is less than filler opening 19 and return opening 17 of hydraulic control mouth 18 of spool 6 make simultaneously to spool 6 make a concerted effort, spool 6 is opened, filler opening 19 and return opening 17 communicate.
The utility model if the hydraulic oil off-load of hydraulic control mouth or pressure drop below the certain proportion of inlet pressure numerical value, Pilot operated check valve is opened naturally, consumes little energy; Owing to being the unlatching that depended on pressure decline realizes spool, shake and impact little; Remove spring, simplified the structure and reduced processing and assembly cost, increased reliability.
Claims (5)
1. a Pilot operated check valve, it is characterized in that: comprise hexagon nut seat (9), spool (6), unidirectional valve pocket (1), described unidirectional valve pocket (1) inner chamber middle part has a projection (14) of radially extending, described projection (14) is divided into oil suction chamber (15) and oil back chamber (19) by unidirectional valve pocket (1) inner chamber, spool (6) is placed in described oil back chamber (19), described unidirectional valve pocket (1) is connected on described hexagon nut seat (9) corresponding to oil suction chamber (15) threaded one end, spool (6) is provided with back-up ring for hole (2) corresponding to oil back chamber (19) one side ends.
2. Pilot operated check valve as claimed in claim 1, it is characterized in that: on described unidirectional valve pocket (1), offer filler opening (19), return opening (17), hydraulic control mouth (18), wherein filler opening (19) is linked up described oil suction chamber (15), return opening (17) is linked up described oil back chamber (19), and hydraulic control mouth (18) is located at unidirectional valve pocket (1) outboard end.
3. Pilot operated check valve as claimed in claim 1, is characterized in that: between described spool (6) and described oil back chamber (19) inwall, be provided with the 2nd O RunddichtringO (5).
4. Pilot operated check valve as claimed in claim 1, is characterized in that: on described hexagon nut seat (9), offer the 3rd seal groove (13), in described the 3rd seal groove (13), be provided with the 4th O RunddichtringO (10).
5. Pilot operated check valve as claimed in claim 1, it is characterized in that: on described unidirectional valve pocket (1), offer the first seal groove (11), the second seal groove (12), wherein in the first seal groove (11), be provided with the first rubber back-up ring (3), an O RunddichtringO (4), in the second seal groove (12), be provided with the second rubber back-up ring (7), the 3rd O RunddichtringO (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649778.6U CN203560523U (en) | 2013-10-21 | 2013-10-21 | Hydraulic control check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649778.6U CN203560523U (en) | 2013-10-21 | 2013-10-21 | Hydraulic control check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560523U true CN203560523U (en) | 2014-04-23 |
Family
ID=50510244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320649778.6U Expired - Lifetime CN203560523U (en) | 2013-10-21 | 2013-10-21 | Hydraulic control check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090352A (en) * | 2016-06-01 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of check valve |
-
2013
- 2013-10-21 CN CN201320649778.6U patent/CN203560523U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090352A (en) * | 2016-06-01 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214112 225, Jiangsu, Wuxi, New Town Industrial Zone Patentee after: Buch Hydraulic (Wuxi) Co.,Ltd. Address before: 214112 No. 225, tin Tai Road, Mei Village, Wuxi New District, Jiangsu Patentee before: WUXI DELI FLUID TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |