CN105570219A - Split type filter throttling device for servo valve - Google Patents
Split type filter throttling device for servo valve Download PDFInfo
- Publication number
- CN105570219A CN105570219A CN201410534855.2A CN201410534855A CN105570219A CN 105570219 A CN105570219 A CN 105570219A CN 201410534855 A CN201410534855 A CN 201410534855A CN 105570219 A CN105570219 A CN 105570219A
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- China
- Prior art keywords
- split type
- servovalve
- throttle orifice
- throttling arrangement
- joint
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Abstract
The invention belongs to a throttling device, and particularly discloses a split type filter throttling device for a servo valve. The device comprises a shell, a filter pipe located in the middle position in the shell, two connectors fixedly connected with the two ends of the filter pipe, throttling holes formed in the outer sides of the connectors, plugs located on the outer sides of the throttling holes and end covers located at the two ends of the shell for achieving the fixing effect. According to the split type filter throttling device, throttling hole parts can be independently assembled, good interchangeability is achieved, the yield of products can be remarkably improved, and the production cost can be reduced.
Description
Technical field
The invention belongs to mechanical field, relate to a kind of throttling arrangement, be specifically related to the split type filtration throttling arrangement of a kind of servovalve.
Background technique
Servovalve is the core control unit of Hydrauservo System.Filtering throttling arrangement is arranged between servovalve oil feeding line and prestage oil circuit, and the hydraulic oil leading to prestage is filtered in its effect, and by throttle orifice for prestage provides stable predetermined pressure.
Servovalve filters throttling arrangement as shown in Figure 1, and chimney filter and two throttle orifice composition oil filter assemblies, external blocking, is loaded in servovalve housing.Chimney filter and two ends throttle orifice are linked together by electron beam welding, and its function filters the fluid leading to prestage, and regulated flow and the pressure of prestage by throttle orifice in assembly.
For ensureing the performance symmetry properties of servovalve, require that two throttle orifices being loaded on same assembly must carry out flow pairing, namely the flow difference of two throttle orifices must control within the specific limits.Aborning, two throttle orifices selecting flow to meet the demands, carry out electron beam welding with chimney filter, and when welding the flow of rear repetition measurement two ends throttle orifice, portioned product flow there occurs change, can not meet matching request.Now because welding process completes, underproof oil filter assembly can only do scraps process, result in part waste and life cycle of the product prolongation.For avoiding this kind of situation to occur, architecture advances being carried out to filtration throttling arrangement, the manufacturing efficiency of product can be improved, reducing cost of production.
Summary of the invention
The technical problem to be solved in the present invention is to provide the split type filtration throttling arrangement of a kind of servovalve, and this device defect rate is low, enhances productivity, reduces cost of production.
For solving the problems of the technologies described above, the split type filtration throttling arrangement of a kind of servovalve of the present invention, this device comprises housing, be positioned at the chimney filter in enclosure interior neutral position, two joints being fixedly connected with chimney filter two ends, be positioned at throttle orifice outside joint, be positioned at blocking outside throttle orifice, be positioned at the end cap that fixation is played at housing two ends.
Described joint outer circle diameter is to there being seal ring.
There is the through hole coaxial with chimney filter the inside of described joint.
The through hole of described joint is step hole, and step hole is less than the outside hole near throttle orifice side near chimney filter one mother rib lateral rotundum.
Described throttle orifice outer circle diameter is to there being seal ring, and inner have cylindrical hole near described joint side, and have conical bore away from joint side, conical tip is run through by an aperture.
Advantageous Effects of the present invention is: the former filtration throttling arrangement of servovalve is by structural constraint, and can not eliminate the impact of welding process on orifice shape, therefore scrappage is higher.Adopt split type filtration throttling arrangement, throttle orifice part can assemble separately, and interchangeability is good, can significantly improve the up-to-standard rate of product, reduces cost of production.
Accompanying drawing explanation
Fig. 1 is traditional filtering throttling arrangement structural representation;
Fig. 2 is the split type filtration throttling arrangement structural representation of a kind of servovalve provided by the invention.
In figure: 1 is chimney filter; 2 is throttle orifice; 3 is housing; 4 is blocking; 5 is end cap; 6 is seal ring; 7 is joint.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 2, the split type filtration throttling arrangement of a kind of servovalve provided by the invention, this device is comprised the housing 3 of hollow, the chimney filter 1 being positioned at housing 3 bosom position, two joints 7 welded by electronics with chimney filter 1 two ends, is positioned at throttle orifice 2 outside joint 7, is positioned at blocking 4 outside throttle orifice 2, is positioned at housing two ends and the fixing end cap 5 of housing 3 screw.
The centre of housing 3 is hollow-core construction, is the mounting point of chimney filter 1, throttle orifice 2, blocking 4.
Joint 7 has two, and weld with chimney filter 1 two ends electronics, there is step hole centre, and be less than the outside hole near throttle orifice 2 side near chimney filter 1 one mother rib lateral rotundum, throttle orifice 2 outer circle diameter upwards has seal ring 6.
Throttle orifice 2 is two, is positioned at outside joint 7, and throttle orifice 2 is inner has cylindrical hole near joint 7 side, and this cylindrical hole is communicated with the step hole of joint 7 and concentric; Throttle orifice 2 inside is conical bore away from joint 7 side, and conical tip runs through throttle orifice 2 by an aperture; Throttle orifice 2 outer circle diameter is to there being seal ring 6.
Blocking 4 has two, and be positioned at outside throttle orifice 2, its outer end is concordant with housing 1, and outer circle diameter is to there being seal ring.
During work, high pressure oil enters from A mouth, after the filtration of chimney filter 1, then through throttle orifice 2, flows to servovalve prestage, for prestage provides stable predetermined pressure.
Claims (5)
1. the split type filtration throttling arrangement of servovalve, is characterized in that: this device comprises housing (3), be positioned at the chimney filter (1) of housing (3) bosom position, two joints (7) be fixedly connected with chimney filter (1) two ends, the throttle orifice (2) being positioned at joint (7) outside, be positioned at throttle orifice (2) outside blocking (4), be positioned at the end cap (5) that fixation is played at housing two ends.
2. the split type filtration throttling arrangement of a kind of servovalve according to claim 1, is characterized in that: described joint (7) outer circle diameter is to there being seal ring (6).
3. the split type filtration throttling arrangement of a kind of servovalve according to claim 1 and 2, is characterized in that: there is the through hole coaxial with chimney filter (1) inside of described joint (7).
4. according to the arbitrary described split type filtration throttling arrangement of a kind of servovalve of claim 1-3, it is characterized in that: the through hole of described joint (7) is step hole, step hole is less than the outside hole near throttle orifice (2) side near chimney filter (1) mother rib lateral rotundum.
5. according to the arbitrary described split type filtration throttling arrangement of a kind of servovalve of claim 1-4, it is characterized in that: described throttle orifice (2) outer circle diameter is to there being seal ring (6), inner have cylindrical hole near described joint (7) side, have conical bore away from joint (7) side, conical tip is run through by an aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534855.2A CN105570219A (en) | 2014-10-11 | 2014-10-11 | Split type filter throttling device for servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534855.2A CN105570219A (en) | 2014-10-11 | 2014-10-11 | Split type filter throttling device for servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570219A true CN105570219A (en) | 2016-05-11 |
Family
ID=55880719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410534855.2A Pending CN105570219A (en) | 2014-10-11 | 2014-10-11 | Split type filter throttling device for servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570219A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922964A (en) * | 1988-12-08 | 1990-05-08 | Hsc Controls Inc. | Servovalve construction |
| CN2519212Y (en) * | 2002-01-24 | 2002-10-30 | 张良灿 | Fixed short-tube throttle valve |
| CN2713192Y (en) * | 2004-07-22 | 2005-07-27 | 上海航天控制工程研究所 | Micro flow force feedback electro-hydraulic servo valve |
| CN2773571Y (en) * | 2005-01-26 | 2006-04-19 | 广东恒基金属制品实业有限公司 | Movable orifice throttle valves |
| CN1959130A (en) * | 2006-10-30 | 2007-05-09 | 华中科技大学 | Hydraulic pressure servo valve |
| CN201583070U (en) * | 2010-01-09 | 2010-09-15 | 新昌县丰亿电器有限公司 | Two-way throttle valve |
| DE102009048753A1 (en) * | 2009-10-08 | 2011-04-14 | Schaeffler Technologies Gmbh & Co. Kg | ring filter |
| CN202228456U (en) * | 2011-09-24 | 2012-05-23 | 湖北航奥伺服科技有限公司 | Electro-hydraulic servo valve |
| CN202470554U (en) * | 2012-03-09 | 2012-10-03 | 新昌县丰亿电器有限公司 | Detachable one-way throttle valve |
| CN103790882A (en) * | 2014-01-22 | 2014-05-14 | 南通爱慕希机械有限公司 | Electric hydraulic filter throttling valve |
-
2014
- 2014-10-11 CN CN201410534855.2A patent/CN105570219A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922964A (en) * | 1988-12-08 | 1990-05-08 | Hsc Controls Inc. | Servovalve construction |
| CN2519212Y (en) * | 2002-01-24 | 2002-10-30 | 张良灿 | Fixed short-tube throttle valve |
| CN2713192Y (en) * | 2004-07-22 | 2005-07-27 | 上海航天控制工程研究所 | Micro flow force feedback electro-hydraulic servo valve |
| CN2773571Y (en) * | 2005-01-26 | 2006-04-19 | 广东恒基金属制品实业有限公司 | Movable orifice throttle valves |
| CN1959130A (en) * | 2006-10-30 | 2007-05-09 | 华中科技大学 | Hydraulic pressure servo valve |
| DE102009048753A1 (en) * | 2009-10-08 | 2011-04-14 | Schaeffler Technologies Gmbh & Co. Kg | ring filter |
| CN201583070U (en) * | 2010-01-09 | 2010-09-15 | 新昌县丰亿电器有限公司 | Two-way throttle valve |
| CN202228456U (en) * | 2011-09-24 | 2012-05-23 | 湖北航奥伺服科技有限公司 | Electro-hydraulic servo valve |
| CN202470554U (en) * | 2012-03-09 | 2012-10-03 | 新昌县丰亿电器有限公司 | Detachable one-way throttle valve |
| CN103790882A (en) * | 2014-01-22 | 2014-05-14 | 南通爱慕希机械有限公司 | Electric hydraulic filter throttling valve |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |