CN202326486U - Leakage-free type pneumatic control hydraulic reversing valve - Google Patents
Leakage-free type pneumatic control hydraulic reversing valve Download PDFInfo
- Publication number
- CN202326486U CN202326486U CN2011204567446U CN201120456744U CN202326486U CN 202326486 U CN202326486 U CN 202326486U CN 2011204567446 U CN2011204567446 U CN 2011204567446U CN 201120456744 U CN201120456744 U CN 201120456744U CN 202326486 U CN202326486 U CN 202326486U
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- valve
- sealing cone
- type pneumatic
- pneumatic
- leakage type
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Abstract
The utility model relates to a leakage-free type pneumatic control hydraulic reversing valve, which comprises a valve body 5 and a reversing valve element 4, wherein the revering valve element 4 is fixed on a pneumatic piston 3 of a spring reset air cylinder, and a piston rod of the spring reset air cylinder is formed. The hydraulic reversing valve controls the reversing valve element by the pneumatic piston, so that the pneumatic control of the leakage-free type hydraulic revering valve is realized; and the more economical and energy-saving reversing operation tasks are realized by setting different working conditions (stations) of the reversing valve element in a state without an air pressure and in a state with an air pressure.
Description
Technical field
The utility model relates to a kind of selector valve, specifically is a kind of no leakage type Pneumatic and hydraulic selector valve.
Background technique
At existing Clamping system and need in the system that pressure keeps, require usually that system pressure is stable for a long time to be kept, traditional by motor-drive pump drive and the system of electromagnetic valve in; Owing to need long-time running of motor-drive pump system or frequent starting to stop; Satisfy the stable maintenance of system pressure, gradually to driving, by the mode development of Pneumatic valve control by pneumatic pressurization system or suction booster; To realize energy saving, reduce power consumption and the target that reduces discharging.
And,, use the ball-type one-way valve structures usually for realizing leak free target by the hydraulicdirectional control valve that pneumatic system provides pressure to keep; This structure more complicated, steel ball weight is bigger simultaneously, and inertia is big; Reaction sensitivity is limited; In the pneumatic drive part of switching spool, the locking that exists oil pressure spool cross section oil pressure difference to cause needs to increase piston area or raising driving air pressure is realized switch motion.
The model utility content
The utility model technical problem to be solved is to provide a kind of simple and compact for structure, and pressurize consumes few no leakage type Pneumatic and hydraulic selector valve.
Its technical problem to be solved can be implemented through following technological scheme.
A kind of no leakage type Pneumatic and hydraulic selector valve comprises valve body 5 and changeover valve core 4, and said changeover valve core 4 is fixed on the pneumatic piston 3 of a spring reset cylinder, and forms the piston rod of said spring reset cylinder.
As the further improvement of present technique scheme, said spring reset cylinder is a single-piston rod stretched spring reset cylinder.
As the further improvement of present technique scheme, this hydraulicdirectional control valve also comprises a valve gap 1, and Returnning spring 2 one ends of said spring reset cylinder are connected to the head of said pneumatic piston 3, and the other end is connected on the inwall of said valve gap 1.
As one of preferred embodiment of the utility model; Form the first sealing cone valve 14 and the second sealing cone valve 15 on the body of said changeover valve core 4; One end of said first sealing cone valve 14 and the second sealing cone valve, 15 less external diameters is arranged in opposite directions; Changeover valve core body outer rim between the said first sealing cone valve 14 and the second sealing cone valve 15 forms an annular outer-cavity 16 that serves as the liquid paths, and the outer cover of said annular outer-cavity 16 is provided with valve pocket 6; Shift to install oil inlet passage, working oil passage and drainback passage on the said valve body 5 perpendicular to valve axis; Wherein said working oil passage is connected with said annular outer-cavity 16; Said oil inlet passage is connected with said valve pocket 6 lower openings, and said drainback passage is connected with said valve pocket 6 upper openings; Said annular outer-cavity 16 contacts or seals contacting of cone valve 15 and valve pocket 6 lower openings through said second through said first sealing cone valve 14 and valve pocket 6 upper openings, optionally is connected with said oil inlet passage or drainback passage.
Further, said changeover valve core 4 has one section hourglass shape body, and two conical surfaces up and down of said hourglass shape body form the said first sealing cone valve 14 and the second sealing cone valve 15 respectively.
In addition, on said oil inlet passage, can be provided with an one-way valve.
Preferably, the nonreturn valve core 9 of said one-way valve is the mushroom head dummy.
Adopt the no leakage type Pneumatic and hydraulic selector valve of technique scheme; Come the switching-over spool is controlled through a pneumatic piston; And then realize the pneumatic control of no leakage type hydraulicdirectional control valve, through being arranged on no air pressure and having under the atmospheric pressure state changeover valve core different working state (station) realize more economical, more energy-conservation switch operation task.
Description of drawings
Below in conjunction with accompanying drawing the embodiment of the utility model being done one specifies.
Fig. 1 is the structural representation of the utility model;
---lid 2---spring 3---pneumatic piston 4---changeover valve core 5---valve body 6---valve pocket 7---jackscrew 8---check valve body 9---nonreturn valve core 10---Returnning spring 11---unidirectional valve seat 12---plug 13---nut 14,15---cone valve 16---annular outer-cavity 17---atmospheric pressure cavities among the figure: 1
Code name explanation among the figure:
AP: drive the air pressure supplying mouth;
R: valve oil return hydraulic fluid port;
A: valve working oil hydraulic fluid port;
P: valve oil-feed hydraulic fluid port;
AR: from A to R, switch valve port;
PA: from P to A, switch valve port;
Embodiment
No leakage type Pneumatic and hydraulic selector valve structure as shown in fig. 1, the following several assemblies of the utility model integrated assembling on valve body 5:
P mouth check valve assembly: be made up of check valve body 8, nonreturn valve core 9, Returnning spring 10, unidirectional valve seat 11 and 2 seal rings, integral body directly is inserted on the valve body;
Pneumatic drive piston assembly: be connected on the changeover valve core 4 through nut 13 by lid 1, spring 2, pneumatic piston 3, be assembled on the valve body 5 through sealing;
Switching valve core assembly: form by changeover valve core 4, valve pocket 6, plug 12, be assembled in the valve body 5, pressure measurement or the overflow reserved opening of jackscrew 7 for communicating with the A mouth.
Wherein, pneumatic piston 3 directly is connected with changeover valve core 4, by spring 2 hold modes, directly drives the realization switch motion by air pressure, and is simple in structure, and it is reliable to be active in one's movements.
At the P of valve mouth, its one-way valve adopts mushroom head dummy structure, and its ball face sealing effect is equal to the steel ball sealing effect; Realize that the P mouth does not have leakage, under equal specification valve port bore, this structure one-way spool 9 is compared with the same specification steel ball simultaneously; Weight is lighter, and inertia is little, and reaction is sensitive more.
Switching valve port PA mouth and AR mouth employing conical surface seal, reliable and stable, satisfy and stablize contact seal under the working state, dead-tight target.
On function, use the no leakage type Pneumatic and hydraulic selector valve of the utility model structure, the alternative traditional guiding valve and the switching and the pressure of hydraulic lock realization keep function, and particularly in Clamping system, system is simpler and compact.
Be the open type structure shown in the accompanying drawing 1, under the packing state, need not other any power consumption at work; Can realize that pressure keeps, when needs switch, only need add air pressure to the AP mouth; Pressed gas gets in the atmospheric pressure cavity 17, and then promotion pneumatic piston 3 moves up; Changeover valve core 4 switches the back air pressure balance, and state keeps always, and consumed power is very little, satisfies the trend demand of present energy-saving and emission-reduction.Because the top of piston has been the spring 2 of reset response, the changeover valve core 4 of bottom has formed the effect of piston rod in fact, thereby formed cylinder is essentially a single-piston rod stretched spring reset cylinder; Can certainly adopt other cylinder form; Optionally open or block AR valve port or PA valve port as long as satisfy the cone valve 14 of changeover valve core 4 bodies upper end and the cone valve 15 of body lower end through the effect of cylinder or spring 2; And then accomplish the lower ending opening of the annular cavity 16 liquid paths that forms through valve pocket 6 and be communicated with oil-feed hydraulic fluid port P, the open upper end of perhaps passing through valve pocket 6 gets final product with the task that oil return hydraulic fluid port A is communicated with; And, also just realized the commutation function of hydraulic pressure because working oil hydraulic fluid port A is connected with annular outer-cavity 16.
Its working state is: under the normally open of accompanying drawing 1, the AP mouth is under the situation of no air pressure, and P mouth and A mouth communicate, and the PA valve port is opened, and A mouth and R mouth are closed, and the AR valve port is closed, and passes through P mouth one-way valve and PA valve port and working hole A from the pumping system high pressure oil and is communicated with; Switching the ventilation of AP mouth presses; Air pressure overcomes coupling mechanism force and the switching part seal friction power that spring 2, oil pressure cross section difference cause, and promotes changeover valve core 4 upwards, and the AR valve port is opened; The PA valve port is closed simultaneously; A mouth working oil is returned fuel tank through the R mouth, and P mouth pressure source is isolated by the PA mouth, and PA implication equilibrium valve system state kept after switching was accomplished.After the AP implication was pressed release, spring 2 promoted changeover valve core 4 assemblies and switches, and returns the front and describes the working state of AP mouth at no air pressure.
The utility model is through optimizing P mouth one-way valve in the valve, and realization nonreturn valve core 9 is compared with the same specification steel ball, and weight is lighter, more compact structure, and inertia is little, and the opening and closing pressure difference is littler, and reaction is sensitive more.Through optimization to PA mouth and AR mouth and changeover valve core 4 and valve pocket 6 sectional dimensions; Realize the balance of each valve port oil pressure in switching; Because the pressure reduction coupling mechanism force that causes of pressure is very little, than small size pneumatic piston 3 and lower driving air pressure under, switch motion is sensitive reliable.
This selector valve compact structure, technology capability is good, needing in the Clamping system on function, to be very suitable for the operating mode of long-time pressurize, and power consumption that need not be any under the pressurize working state.
Claims (7)
1. a no leakage type Pneumatic and hydraulic selector valve comprises valve body (5) and changeover valve core (4), it is characterized in that said changeover valve core (4) is fixed on the pneumatic piston (3) of a spring reset cylinder, and forms the piston rod of said spring reset cylinder.
2. according to the said no leakage type Pneumatic and hydraulic selector valve of claim 1, it is characterized in that said spring reset cylinder is a single-piston rod stretched spring reset cylinder.
3. according to the said no leakage type Pneumatic and hydraulic selector valve of claim 2; It is characterized in that; This hydraulicdirectional control valve also comprises a valve gap (1), and Returnning spring (2) one ends of said spring reset cylinder are connected to the head of said pneumatic piston (3), and the other end is connected on the inwall of said valve gap (1).
4. according to claim 1,2 or 3 said no leakage type Pneumatic and hydraulic selector valves; It is characterized in that; Form the first sealing cone valve (14) and the second sealing cone valve (15) on the body of said changeover valve core (4); One end of said first sealing cone valve (14) and the less external diameter of the second sealing cone valve (15) is arranged in opposite directions; Changeover valve core body outer rim between the said first sealing cone valve (14) and the second sealing cone valve (15) forms an annular outer-cavity (16) that serves as the liquid paths, and the outer cover of said annular outer-cavity (16) is provided with valve pocket (6); Shift to install oil inlet passage, working oil passage and drainback passage on the said valve body (5) perpendicular to valve axis; Wherein said working oil passage is connected with said annular outer-cavity (16); Said oil inlet passage is connected with said valve pocket (6) lower openings, and said drainback passage is connected with said valve pocket (6) upper opening; Said annular outer-cavity (16) contacts or seals contacting of cone valve (15) and valve pocket (6) lower openings through said second through the said first sealing cone valve (14) and valve pocket (6) upper opening, optionally is connected with said oil inlet passage or drainback passage.
5. according to the said no leakage type Pneumatic and hydraulic selector valve of claim 4; It is characterized in that; Said changeover valve core (4) has one section hourglass shape body, and two conical surfaces up and down of said hourglass shape body form the said first sealing cone valve (14) and the second sealing cone valve (15) respectively.
6. according to the said no leakage type Pneumatic and hydraulic selector valve of claim 4, it is characterized in that said oil inlet passage is provided with an one-way valve.
7. according to the said no leakage type Pneumatic and hydraulic selector valve of claim 6, it is characterized in that the nonreturn valve core of said one-way valve (9) is the mushroom head dummy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204567446U CN202326486U (en) | 2011-11-17 | 2011-11-17 | Leakage-free type pneumatic control hydraulic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204567446U CN202326486U (en) | 2011-11-17 | 2011-11-17 | Leakage-free type pneumatic control hydraulic reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326486U true CN202326486U (en) | 2012-07-11 |
Family
ID=46438467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204567446U Expired - Lifetime CN202326486U (en) | 2011-11-17 | 2011-11-17 | Leakage-free type pneumatic control hydraulic reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326486U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235100A (en) * | 2014-08-29 | 2014-12-24 | 毅联实业(上海)有限公司 | Dual pneumatic operated directional valve for pneumatic motor |
| CN108180295A (en) * | 2017-12-29 | 2018-06-19 | 胡芳丽 | A kind of zero leakage solenoid valve |
| CN110762080A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Double-hydraulic control hydraulic lock |
-
2011
- 2011-11-17 CN CN2011204567446U patent/CN202326486U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235100A (en) * | 2014-08-29 | 2014-12-24 | 毅联实业(上海)有限公司 | Dual pneumatic operated directional valve for pneumatic motor |
| CN108180295A (en) * | 2017-12-29 | 2018-06-19 | 胡芳丽 | A kind of zero leakage solenoid valve |
| CN108180295B (en) * | 2017-12-29 | 2019-11-29 | 胡芳丽 | A kind of zero leakage solenoid valve |
| CN110762080A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Double-hydraulic control hydraulic lock |
| CN110762080B (en) * | 2018-07-27 | 2021-09-03 | 比亚迪股份有限公司 | Double-hydraulic control hydraulic lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI SONCO QUICK CHANGE SYSTEMS CO., LTD. Free format text: FORMER NAME: SONGKE MECHANICAL AUTOMATION TECH. CO., LTD., SHANGHAI |
|
| CP03 | Change of name, title or address |
Address after: 201201 Shanghai Guo Shou Jing Road, Zhangjiang High Tech Park of Pudong New Area No. 351 Building No. 2 room A638-10 Patentee after: SHANGHAI SONCO QUICK CHANGE SYSTEMS CO., LTD. Address before: 201201, Shanghai, Pudong Jiangdong District Road, No. 233 Ren Qing Patentee before: Shanghai Sonco Machinery Automation Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |