CN201232778Y - Protection type micro-controlled multi-way change valve - Google Patents
Protection type micro-controlled multi-way change valve Download PDFInfo
- Publication number
- CN201232778Y CN201232778Y CNU2008200145814U CN200820014581U CN201232778Y CN 201232778 Y CN201232778 Y CN 201232778Y CN U2008200145814 U CNU2008200145814 U CN U2008200145814U CN 200820014581 U CN200820014581 U CN 200820014581U CN 201232778 Y CN201232778 Y CN 201232778Y
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- CN
- China
- Prior art keywords
- valve
- reversing valve
- oil
- rod
- valve body
- Prior art date
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- Expired - Fee Related
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- Multiple-Way Valves (AREA)
Abstract
The utility model relates to a protective micro-control multichannel reversing valve, which resolves the problems that the front shaft end of the valve rod of the prior multichannel reversing valve is not provided with a protective device, and an operation part is exposed outside directly, and rusting happens on the multichannel reversing valve when using, especially when working under the hostile environment, thereby the multichannel reversing valve can not work, and the like. The protective micro-control multichannel reversing valve comprises a main safety valve, an oil-feeding valve body, a reversing valve body and an oil return valve which are connected in turn. The utility model is characterized in that a front valve cover is arranged on the reversing valve body corresponding to the front shaft end of a reversing valve rod, and the other end of the front valve cover is connected with a dustproof cap and is connected with a handle connector through the dustproof cap; the handle connector is inserted into the front valve cover to be arranged in an operation port of the reversing valve rod in an insertion way; the position of the feed rod of the reversing valve rod, which corresponds to the oil groove of an oil-feeding channel, is longitudinally provided with a buffer throttling groove communicated with the oil groove. The utility model has the advantages of preventing the valve rod from being damaged when working under hostile environment, ensuring the reversing valve to work normally, no shock pressure when the valve rod works and prolonging the service life of the whole hydraulic system.
Description
Technical field
The utility model relates to the multiple directional control valve that uses in a kind of engineering machinery, particularly a kind of protective type micro-control multiple directional control valve.
Background technique
Generally adopt rated pressure 31.5Mpa, the multiple directional control valve of flow 80L/min in the engineering machinery at present.Axle head does not have protective equipment before the valve rod of this multiple directional control valve, and actuating element is directly exposed to the outside.In use particularly be operated in rugged environment,, multiple directional control valve can not be worked as producing corrosion in the ocean environment.In addition, traditional multiple directional control valve valve rod is to process ring shaped oil passage on polished rod, does not cushion when valve is opened thereby the generation hydraulic shock, influences the working life of whole hydraulic system.
Summary of the invention
The purpose of this utility model is to address the above problem; provide a kind of valve rod that prevents in abominable working environment, to damage; guarantee the selector valve proper functioning, valve rod the time does not have compression shock in work, can prolong the whole hydraulic system protective type micro-control multiple directional control valve in working life.
This protective type micro-control multiple directional control valve, form by the main safety valve that links to each other successively, oil-feed valve body, commutation valve body and oil return valve body, its special way is: corresponding commutation valve rod front axle end is provided with preceding valve bonnet on the commutation valve body, described commutation valve rod front axle end is positioned at preceding valve bonnet, the other end at preceding valve bonnet is connected with dust cap, be connected with the handle joint by dust cap, before described handle joint inserts in the valve bonnet and with commutation valve rod gathering hole plug-in mounting, longitudinally be provided with the buffering throttling groove that communicates with oil groove in the oil groove position of the corresponding oil input channel in the polished rod position of commutation valve rod.
Above-mentioned protective type micro-control multiple directional control valve, described oil return valve body is the gap bridge valve body, so that pressure oil is supplied with next valve and used during the valve neutral position.
This multiple directional control valve can be formed oil circuit in parallel, series connection oil circuit and series hybrid oil circuit.Because axle head is provided with preceding valve bonnet before the corresponding valve rod on the commutation valve body, axle head before the valve rod can be protected with the external world and keep apart, to prevent that (as dust and ocean climate) valve rod damages in abominable working environment, guarantee the selector valve proper functioning.By on valve rod, establishing the buffering throttling groove, can solve the problem of traditional multiple directional control valve micro-control poor performance, valve rod is not to open when work, but opens standard-sized sheet to the last gradually along with stroke moves, do not have compression shock, thereby prolong the working life of whole hydraulic system greatly.This multiple directional control valve volume is little, and flow is big, and the pressure loss is little, can form 10 multiple directional control valve at most.Be widely used in flow in the following engineering machinery field of 80L/min, especially all-hydraulic drill field.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the C-C sectional view of Fig. 1;
Fig. 3 is a hydraulic schematic diagram of the present utility model.
Embodiment
As shown in the figure, the utility model is by main safety valve 5, oil-feed valve body 4, commutation valve body 2, secondary overload valve 6 and oil return valve body 1 are formed, wherein main safety valve 5, oil-feed valve body 4, link to each other successively by stay bolt between commutation valve body 2 and the oil return valve body 1, secondary overload valve 6 is installed on the commutation valve body 2, valve bonnet 3 before axle head is provided with before the corresponding commutation valve rod 201 on commutation valve body 2, before valve bonnet 3 lower ends be connecting base and be connected with the valve body 2 that commutates by screw, valve bonnet 3 before axle head is positioned at before the described commutation valve rod 201, the other end at preceding valve bonnet 3 is connected with dust cap 7, dust cap 7 can adopt rubber material, the other end at dust cap 8 is fitted with handle joint 8, because dust cap 7 can be guaranteed sealing between dust cap 7 and the handle joint 8 for elastic material, valve bonnet 3 interior ends were inserted in the commutation valve rod gathering hole 203 before described handle joint 8 inserted, and longitudinally were provided with the buffering throttling groove 202 that communicates with described oil groove in the oil groove position of the corresponding oil input channel in the polished rod position of commutation valve rod 201.Oil return valve body 1 among this embodiment is the gap bridge valve body, so that pressure oil is supplied with next valve and used during the valve neutral position.Among the figure: P is a filler opening, and T is a return opening, A
1, B
1～A
7, B
7Be commutation oil cylinder interface.
Claims (2)
1, a kind of protective type micro-control multiple directional control valve, by the main safety valve (5) that links to each other successively, oil-feed valve body (4), commutation valve body (2) and oil return valve body (1) constitute, it is characterized in that: go up the preceding axle head of corresponding commutation valve rod (201) at commutation valve body (2) and be provided with preceding valve bonnet (3), the preceding axle head of described commutation valve rod (201) is positioned at preceding valve bonnet (3), the other end at preceding valve bonnet (3) is connected with dust cap (7), be connected with handle joint (8) by dust cap (7), before described handle joint (8) inserts in the valve bonnet (3) and with commutation valve rod gathering hole (203) plug-in mounting, longitudinally be provided with the buffering throttling groove (202) that communicates with described oil groove in the oil groove position of the corresponding oil input channel in the polished rod position of commutation valve rod (201).
2, protective type micro-control multiple directional control valve according to claim 1 is characterized in that: described oil return valve body (1) is the gap bridge valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200145814U CN201232778Y (en) | 2008-08-02 | 2008-08-02 | Protection type micro-controlled multi-way change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200145814U CN201232778Y (en) | 2008-08-02 | 2008-08-02 | Protection type micro-controlled multi-way change valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232778Y true CN201232778Y (en) | 2009-05-06 |
Family
ID=40619157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200145814U Expired - Fee Related CN201232778Y (en) | 2008-08-02 | 2008-08-02 | Protection type micro-controlled multi-way change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232778Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953601A (en) * | 2014-05-06 | 2014-07-30 | 江苏三立液压机械有限公司 | Multiple directional control valve |
| CN104564890A (en) * | 2014-12-30 | 2015-04-29 | 浙江大学 | Switchable multi-channel reversing rotary valve in integral serial-parallel connection |
-
2008
- 2008-08-02 CN CNU2008200145814U patent/CN201232778Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953601A (en) * | 2014-05-06 | 2014-07-30 | 江苏三立液压机械有限公司 | Multiple directional control valve |
| CN104564890A (en) * | 2014-12-30 | 2015-04-29 | 浙江大学 | Switchable multi-channel reversing rotary valve in integral serial-parallel connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160223 Address after: 121015, No. 1, section 66-1, pine slope road, Guta District, Liaoning, Jinzhou Patentee after: Jinzhou Lite Hydraulic Technology Co. Ltd. Address before: 121000 No. 29, Jin Jin Road, Guta District, Liaoning, Jinzhou Patentee before: Jinzhou Lite Hydraulic Manufacturing Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20170802 |