CN103277367A - Hydraulic oil way filtering device - Google Patents
Hydraulic oil way filtering device Download PDFInfo
- Publication number
- CN103277367A CN103277367A CN2013102022087A CN201310202208A CN103277367A CN 103277367 A CN103277367 A CN 103277367A CN 2013102022087 A CN2013102022087 A CN 2013102022087A CN 201310202208 A CN201310202208 A CN 201310202208A CN 103277367 A CN103277367 A CN 103277367A
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- CN
- China
- Prior art keywords
- filter screen
- straight joint
- joint body
- oil way
- filtering device
- 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.)
- Pending
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic oil way filtering device which is structurally composed of a straight joint body and a filter screen. The hydraulic oil way filtering device is characterized in that the filter screen is pressed inside the connecting threads of the straight joint body and the valve body of a pilot control valve through a special process, and dirt is prevented from entering the pilot control valve to cause blocking of a valve element. The hydraulic oil way filtering device has the advantages of being high in reliability, low in cost, small in occupied space, convenient to mount, use and maintain, wide in application and the like, transition is fine, no dirty liquid enters a hydraulic pipeline, and the safety of an oil way is improved.
Description
Technical field
The present invention is applied to hydraulic shovel guide control system, belongs to the control gear technical field, especially a kind of hydraulic circuit filtrating equipment.
Background technique
In guide's control system of hydraulic shovel, guide's filter connects with hydraulic oil pipe between each pilot-actuated valve, being difficult to assurance in the installation of excavator, maintenance process has pollutant anything but and enters hydraulic pipe line, in case and these pollutants finally enter pilot-actuated valve and just cause pilot-actuated valve spool clamping stagnation most probably, thereby cause security incident.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency, provide a kind of straight joint and pilot-actuated valve valve body connecting thread inside to be pressed into a filter screen with special process, can prevent " pollutant enters pilot-actuated valve and causes pilot-actuated valve spool clamping stagnation ", simple in structure, a kind of hydraulic circuit filtrating equipment easy to manufacture, easy to install.
Technical solution of the present invention is such, and a kind of hydraulic circuit filtrating equipment comprises straight joint body, filter screen.It is characterized in that straight joint body and pilot-actuated valve valve body connecting thread one end installation filter screen.
Filter screen is installed in the interior bore ends of straight joint body and pilot-actuated valve valve body connecting thread end.
The filter screen external diameter is bigger than the internal orifice dimension of straight joint body.
Filter screen is installed in straight joint body endoporus to be had more than the ring.
The present invention's outstanding effect compared with prior art is: be pressed into a filter screen at straight joint and pilot-actuated valve valve body connecting thread inside with special process, prevent that pollutant from entering control valve, cause having of control valve spool clamping stagnation simple in structure, easy to use, cost is low, and is safe and reliable.
Description of drawings
Formation of the present invention is:
Fig. 1 is overall structure plan view of the present invention.
Fig. 2 is that oil circuit of the present invention connects application principle figure.
Reference character: straight joint body (1), filter screen (2).
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment 1, attaches it to the filler opening of pilot-actuated valve, reconnects the hydraulic oil pipe of coming from guide's filter, thereby forms a complete control system, and this sample filtering type straight joint just can play a role.Inner groove is opened in end at straight joint body (1) endoporus, again in filter screen (2) embedded groove.At straight joint body (1) and pilot-actuated valve valve body connecting thread end filter screen (2) is installed, available formula or the open flume type inserted opened hole countersunk filter screen (2) is installed, and also can directly at end face filter screen (2) be installed, but should fix.Installation is fine like this, prevents that dirt from entering pilot-actuated valve spool clamping stagnation, thereby avoids causing security incident.
Embodiment 3, and straight joint body (1) endoporus limit wall is done spirality, and filter screen (2) is installed in straight joint body (1) internal orifice end.
Claims (4)
1. a hydraulic circuit filtrating equipment comprises straight joint body, filter screen, it is characterized in that straight joint body (1) and pilot-actuated valve valve body connecting thread one end installation filter screen (2).
2. according to the described a kind of hydraulic circuit filtrating equipment of claim 1, it is characterized in that filter screen (2) is installed in the interior bore ends of straight joint body (1) and pilot-actuated valve valve body connecting thread end.
3. according to the described a kind of hydraulic circuit filtrating equipment of claim 1, it is characterized in that filter screen (2) external diameter is bigger than the internal orifice dimension of straight joint body (1).
4. according to the described a kind of hydraulic circuit filtrating equipment of claim 1, it is characterized in that filter screen (2) is installed in straight joint body (1) endoporus and has more than the ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102022087A CN103277367A (en) | 2013-05-27 | 2013-05-27 | Hydraulic oil way filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102022087A CN103277367A (en) | 2013-05-27 | 2013-05-27 | Hydraulic oil way filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277367A true CN103277367A (en) | 2013-09-04 |
Family
ID=49059966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102022087A Pending CN103277367A (en) | 2013-05-27 | 2013-05-27 | Hydraulic oil way filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366772A (en) * | 2016-05-11 | 2017-11-21 | 株式会社鹭宫制作所 | Motor-driven valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07259810A (en) * | 1994-03-16 | 1995-10-09 | Shin Caterpillar Mitsubishi Ltd | Pilot operation type relief valve |
| CN201003518Y (en) * | 2006-12-11 | 2008-01-09 | 中国航天科技集团公司烽火机械厂 | Pilot valve |
| CN101979884A (en) * | 2010-11-13 | 2011-02-23 | 衡阳华菱钢管有限公司 | Method for preventing damaged seal of hydraulic oil cylinder from polluting hydraulic oil and filtering device |
| CN201934820U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Filter type straight joint |
-
2013
- 2013-05-27 CN CN2013102022087A patent/CN103277367A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07259810A (en) * | 1994-03-16 | 1995-10-09 | Shin Caterpillar Mitsubishi Ltd | Pilot operation type relief valve |
| CN201003518Y (en) * | 2006-12-11 | 2008-01-09 | 中国航天科技集团公司烽火机械厂 | Pilot valve |
| CN101979884A (en) * | 2010-11-13 | 2011-02-23 | 衡阳华菱钢管有限公司 | Method for preventing damaged seal of hydraulic oil cylinder from polluting hydraulic oil and filtering device |
| CN201934820U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Filter type straight joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366772A (en) * | 2016-05-11 | 2017-11-21 | 株式会社鹭宫制作所 | Motor-driven valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |