CN201155592Y - Hydraulic change-over valve - Google Patents
Hydraulic change-over valve Download PDFInfo
- Publication number
- CN201155592Y CN201155592Y CNU2008200622692U CN200820062269U CN201155592Y CN 201155592 Y CN201155592 Y CN 201155592Y CN U2008200622692 U CNU2008200622692 U CN U2008200622692U CN 200820062269 U CN200820062269 U CN 200820062269U CN 201155592 Y CN201155592 Y CN 201155592Y
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- Prior art keywords
- valve
- spool
- valve body
- utility
- model
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Abstract
The utility model relates to a hydraulic reversing valve, comprising a valve cap, a valve body, a valve plug and a step on the valve plug; the valve plug is arranged inside the valve body; the step on the valve plug is fit closely with the inner wall of the valve body; the utility model is characterized in that at least a sealing ring is arranged respectively on both ends of the inner wall of the valve body; the sealing ring contacts with the step on both ends of the valve plug. The utility model has the beneficial effects that the addition of the sealing ring on the both ends of the inner wall of the valve body prevents hydraulic oil from leaking from the junction surface of the valve plug and the valve body so as not to lead to the pressure loss of the hydraulic oil, thereby eliminating the drifting of the valve plug.
Description
Technical field
The utility model relates to a kind of industrial hydraulic control component, relates in particular to a kind of hydraulicdirectional control valve.
Background technique
Existing hydraulicdirectional control valve is directly realized sealing (being called for short sealing firmly) by the relation of closely cooperating between spool and the valve body.Because in use spool needs relative valve body axial motion, hydraulic oil leaks out from the junction plane between spool and the valve body easily and makes the hydraulic oil decompression, the spool drift phenomenon occurs.
The model utility content
The technical problems to be solved in the utility model provides a kind of hydraulicdirectional control valve, can strengthen the sealing effect between spool and the valve body, avoids the leakage decompression because of hydraulic oil.
The technical solution adopted in the utility model is: a kind of hydraulicdirectional control valve, comprise valve gap, valve body and spool and be positioned at step on the spool, described spool is positioned at the inside of valve body, the step on the spool and the inwall of valve body closely cooperate, the inwall two ends of valve body have at least one place seal ring respectively, and the step at described seal ring and spool two ends closely cooperates.
The beneficial effects of the utility model are: after the inwall two ends of valve body install seal ring additional, on the basis of " hard sealing ", increase " soft seal ", preventing further that hydraulic oil from leaking out from the junction plane between spool and the valve body makes the hydraulic oil decompression, solves the spool drift phenomenon.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing E of seal ring of the present utility model mounting point.
Fig. 3 is the sectional view of a kind of seal ring of the present utility model.
Fig. 4 is the structural representation of a kind of three valve groups of the utility model composition.
Fig. 5 is the hydraulic schematic diagram of Fig. 4.
Description of reference numerals: valve gap 1, valve body 2, spool 3, step 31, step 32, step 32, seal ring 4.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Show a kind of two position four-way valves as Fig. 1 and Fig. 2, comprise valve gap 1, valve body 2 and spool 3 and be positioned at step 31,32,33 on the spool 2, described spool 3 is positioned at the inside of valve body 2, the step 31,32,33 on the spool 3 and the inwall of valve body 2 closely cooperate, the inwall two ends of valve body 2 have at least one place seal ring 4 respectively, and described seal ring 4 closely cooperates with the step 31,32 at spool 3 two ends.
As shown in Figure 3, the cross section of described seal ring is the annular ring of T-shape.Its sectional shape also can be " Y " type, " V " type, " T " or " O " type.The material of seal ring adopts flexible materials such as rubber.
For further enhanced leaktightness effect, the top width that makes the step on the spool between 20 millimeters to 22 millimeters, the design width of overgauge valve.
As shown in Figure 1, the cross section of the step 31,32,33 of spool 3 is trapezoidal, makes step form the inclined-plane at the end face of valve inner.
Fig. 4 and Fig. 5 show the structural representation and the hydraulic schematic diagram of a kind of three six-way valve groups of being made up of the utility model.Valve group among the figure is composed in series by three two-position four-way valve X, Y, Z.The spool of movement of valve Z, pressure oil is by valve pocket P and valve pocket P
3UNICOM also enters the valve pocket P of valve Y
2, valve pocket P
2Again with valve pocket P
1UNICOM, the spool of movement of valve Y is pressure oil and valve pocket A then
2Or B
2UNICOM.Movement of valve X spool then pressure oil and valve pocket P
1With valve pocket A
1Or B
1UNICOM.
Those of ordinary skill in the art will appreciate that; two position four-way valves described here and the embodiment of valve group thereof are in order to help reader understanding's principle of the present invention; should be understood that protection domain of the present utility model is not limited to such special statement and embodiment, the every various hydraulicdirectional control valves and valve group of this use new technique scheme principle of having adopted all belongs to protection domain of the present utility model.
Claims (4)
1. hydraulicdirectional control valve, comprise valve gap, valve body and spool and be positioned at step on the spool, described spool is positioned at the inside of valve body, the step on the spool and the inwall of valve body closely cooperate, it is characterized in that, the inwall two ends of valve body have at least one place seal ring respectively, and the step at described seal ring and spool two ends closely cooperates.
2. hydraulicdirectional control valve according to claim 1 is characterized in that, the cross section of described seal ring is " Y " type, " V " type, " T " or " O " type.
3. hydraulicdirectional control valve according to claim 1 and 2 is characterized in that, the top width of the step on the described spool is between 20 millimeters to 22 millimeters.
4. hydraulicdirectional control valve according to claim 1 and 2 is characterized in that, the cross section of the step of described spool is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200622692U CN201155592Y (en) | 2008-02-26 | 2008-02-26 | Hydraulic change-over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200622692U CN201155592Y (en) | 2008-02-26 | 2008-02-26 | Hydraulic change-over valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155592Y true CN201155592Y (en) | 2008-11-26 |
Family
ID=40103375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200622692U Expired - Fee Related CN201155592Y (en) | 2008-02-26 | 2008-02-26 | Hydraulic change-over valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155592Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116380A (en) * | 2011-02-28 | 2011-07-06 | 东莞市尚正机电科技有限公司 | High-speed heavy-load linear reciprocating buffer reversing valve |
| CN105042113A (en) * | 2015-06-08 | 2015-11-11 | 苏州珍展科技材料有限公司 | High-pressure reversing valve with washing function |
| CN109611406A (en) * | 2019-01-11 | 2019-04-12 | 西安理工大学 | A kind of hydraulicdirectional control valve |
| CN109695754A (en) * | 2019-01-11 | 2019-04-30 | 西安理工大学 | A kind of hydraulic inlet valve |
-
2008
- 2008-02-26 CN CNU2008200622692U patent/CN201155592Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116380A (en) * | 2011-02-28 | 2011-07-06 | 东莞市尚正机电科技有限公司 | High-speed heavy-load linear reciprocating buffer reversing valve |
| CN105042113A (en) * | 2015-06-08 | 2015-11-11 | 苏州珍展科技材料有限公司 | High-pressure reversing valve with washing function |
| CN109611406A (en) * | 2019-01-11 | 2019-04-12 | 西安理工大学 | A kind of hydraulicdirectional control valve |
| CN109695754A (en) * | 2019-01-11 | 2019-04-30 | 西安理工大学 | A kind of hydraulic inlet valve |
| CN109695754B (en) * | 2019-01-11 | 2021-06-15 | 西安理工大学 | Hydraulic oil inlet valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SONG GUANSHUN Effective date: 20130724 Owner name: CHENGDU BANGLI MACHINERY CO., LTD. Free format text: FORMER OWNER: XIE WEIMIN Effective date: 20130724 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 614401 CHENGDU, SICHUAN PROVINCE TO: 610500 CHENGDU, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130724 Address after: 610500, 6 West Section of two South Road, Xindu District, Sichuan, Chengdu Patentee after: Chengdu Bangli Machinery Co., Ltd. Address before: Jinniu District Chengdu City, Sichuan province 614401 Shu Road No. 289 Patentee before: Xie Weimin Patentee before: Song Guanshun |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20130226 |