CN205503592U - Gas accuse distribution valve - Google Patents
Gas accuse distribution valve Download PDFInfo
- Publication number
- CN205503592U CN205503592U CN201521067772.3U CN201521067772U CN205503592U CN 205503592 U CN205503592 U CN 205503592U CN 201521067772 U CN201521067772 U CN 201521067772U CN 205503592 U CN205503592 U CN 205503592U
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- valve body
- oil
- piston
- annular chamber
- inlet channel
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Abstract
The utility model belongs to the technical field of the distribution valve, a gas accuse distribution valve is disclosed for there is to go up and down jiggly problem in it to solve current distribution valve in the control process. The utility model discloses a valve body with set the case in the valve body, oil inlet, oil -out and backward flow mouth have been seted up on the valve body, the annular channel intercommunication that forms between oil inlet, oil -out and backward flow mouth and valve body and the case, the one end of valve body is connected with gas accuse valve body, is provided with mutual first piston and the second piston that sets up that separate in the gas accuse valve body, the one end of case sets the cover and establishes the reset spring in the valve body, the other end of case pass that the valve body stretches into in the gas accuse valve body and with a hinge joint, offered first, second and the 3rd inlet channel on the gas accuse valve body, an inlet channel offers between first piston and second piston, the 2nd inlet channel offers between first piston and valve body, the 3rd inlet channel feeds through with the cavity that valve body formation was controlled to second piston gentleness each other.
Description
Technical field
This utility model belongs to distributing valve technical field, specifically discloses a kind of air control distribution valve.
Background technology
Distributing valve is extensively used in HYDRAULIC CONTROL SYSTEM, such as in the lifting device of HYDRAULIC CONTROL SYSTEM.Distributing valve includes valve body, spool and hand lever, and spool seals with valve body by sliding, and hand lever controls spool and slides, and it typically uses 3-position-3-way valve arrangement.Its operation principle is by one of both direction applying power on hand lever, hand lever is promoted to produce displacement, drive the spool being connected as a single entity with hand lever to slide simultaneously, the slip of spool can control opening or airtight of manual distributing valve oil transportation path, it is achieved to the liter of controlled device, the control function stopping, drop.But use planar slide structure between spool and the hand lever of the manual distributing valve of this structure, the phenomenon of hand lever and spool connecting pin inordinate wear easily occurs during use, cause the generation of manual distributing valve fault.Simultaneously the manual distributing valve of this structure due to control hydraulic valve relief valve passage easily break down on valve body, particularly in lifting process, controlled device is crossed slowly because of relief valve fault lifting speed or lifting was lost efficacy, easily occur controlled device to lose efficacy, cause production to be normally carried out.For this technical problem, the utility model patent of Application No. 201420227246.8 discloses a kind of air control distribution valve, including overflow valve, valve body, spool and control bar, overflow valve is arranged at the hollow space in spool, including overflow core, spring one and bearing one, being additionally provided with the safe mouth connected with oil-in and the overfall connected with reservoir port on overflow valve, bearing one is threadeded with spool, and spring one compresses overflow core under the compressing of bearing one；Valve body and spool are 3-position-3-way valve arrangement, spool seals with valve body by sliding, hand lever and spool one end outside valve body is hinged, and hand lever is being additionally provided with connector near the one end with spool hinged place, hand lever carries out hinged with connector one end, and the connector other end carries out hinged with valve body connecting portion；Valve body is provided with shell near overflow valve one end；Being provided with bearing two and spring two in shell, bearing two hangs on bearing one, and bearing two holddown spring two gives spool active force.
But, this distributing valve easily occurs lifting jiggly problem during using.
Utility model content
This utility model also exists the jiggly problem of lifting to solve existing distributing valve during controlling, and a kind of air control distribution valve is provided, it is capable of pneumatic control, for the rapid decrease of lifting and hydraulic cylinder realizing hydraulic cylinder and slowly decline, there is the stable feature of control, it is ensured that the stationarity of hydraulic cylinder lifting.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
A kind of air control distribution valve, including valve body and the spool being disposed in valve body, the oil-in for connecting is offered with oil pump, for the oil-out connected with hydraulic cylinder with for the refluxing opening connected with fuel tank on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, it is characterized in that, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected.
One end of described gas control valve body is connected with valve body, and the other end of described gas control valve body is equipped with sealing lid, and described 3rd inlet channel is opened in sealing and covers.
It is provided with for the second piston is carried out spacing spacing ring in described Pneumatic valve body.
The first annular chamber of spaced setting, the second annular chamber and the 3rd annular chamber it is provided with in described valve body, described first annular chamber connects with the second annular chamber, described second annular chamber and the connection of the 3rd annular chamber, described first annular chamber connects with oil return opening, described second annular chamber connects with oil-in, and described 3rd annular chamber connects with oil-out；Described spool is provided with the first sealing ring for controlling to connect first annular chamber and the second annular chamber, and described spool is provided with and connects the second annular chamber and the second sealing ring of the 3rd annular chamber for controlling.
Described spool is provided with for through valve body the 3rd sealing ring that is connected with first piston.
Described valve body offers overflow ducts, and described overflow ducts is equipped with overflow valve, described overflow ducts and the connection of the second annular chamber.
One end of described overflow ducts connects with the second annular chamber, and the other end of described overflow ducts connects with oil return opening, and described overflow valve is disposed in the intersection of overflow ducts and oil return opening.
Described overflow ducts and oil return opening are opened on valve body along the radial direction of spool, and one end of described overflow valve coordinates through oil return opening with overflow ducts.
Compared with prior art, this utility model has the advantages that
Air control distribution valve of the present utility model includes valve body and the spool being disposed in valve body, the oil-in for connecting is offered with oil pump, for the oil-out connected with hydraulic cylinder with for the refluxing opening connected with fuel tank on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected.During using, oil pump oil-out connects with oil-in through pipeline, and when the first inlet channel, the second inlet channel and the 3rd inlet channel are all passed through without compressed gas, hydraulic oil enters from oil-in, flows out and through pipeline flows into fuel tank from oil return opening；After the first inlet channel is passed through compressed gas, when first piston promotes spool to the left to working position, oil-in and the channel enclosed of oil return opening, oil-in connects with oil-out, hydraulic oil enters from oil-in, flows out from oil-out, thus realizes the lifting action of hydraulic cylinder；When the second inlet channel is passed through compressed gas, when first piston pushes away to the right spool to working position, passage between oil-in, oil-out and oil return opening is all turned on, and the hydraulic oil in hydraulic cylinder flows out from oil-out and flows out from oil return opening so that hydraulic cylinder realizes normal decline；When the second inlet channel and the 3rd inlet channel are passed through compressed gas simultaneously when, first piston promotes to the right spool to working position, when second piston promotes first piston the most to the left to setting position, when spool also moves into setting working position, passage between oil-in and oil-out is restricted, channels open between oil-in and oil return opening, hydraulic oil in hydraulic cylinder flows out the restricted access between oil-out and oil-in from oil-out and flows out, then flow out from oil return opening, thus realize hydraulic cylinder slowly decline work.Compared to prior art, this utility model is capable of pneumatic control, for the rapid decrease of lifting and hydraulic cylinder realizing hydraulic cylinder and slowly decline, has the stable feature of control, it is ensured that the stationarity of hydraulic cylinder lifting.
Accompanying drawing explanation
Fig. 1 is sectional view structural representation of the present utility model；
Fig. 2 is the sectional view structural representation of other direction of the present utility model；
Labelling in figure: 1, valve body, 2, spool, 3, oil-in, 4, oil-out, 5, oil return opening, 6, gas control valve body, 7, first piston, the 8, second piston, 9, back-moving spring, the 10, first inlet channel, the 11, second inlet channel, the 12, the 3rd inlet channel, 13, lid is sealed, 14, spacing ring, 15, first annular chamber, the 16, second annular chamber, 17, the 3rd annular chamber, the 18, first sealing ring, the 19, second sealing ring, 20, the 3rd sealing ring, 21, overflow ducts, 22, overflow valve.
Detailed description of the invention
Below in conjunction with embodiment, the utility model will be further described, and described embodiment is only a part of embodiment of this utility model, is not whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art obtained under not making creative work premise other used by embodiment, broadly fall into protection domain of the present utility model.
In conjunction with Fig. 1 and Fig. 2, air control distribution valve of the present utility model includes valve body 1 and the spool 2 being disposed in valve body 1, the oil-in 3 for connecting is offered with outside oil pump, for the oil-out 4 connected with outside hydraulic cylinder with for the refluxing opening 5 connected with outside fuel tank on described valve body 1, the circular passage formed between described oil-in 3, oil-out 4 and refluxing opening 5 with valve body 1 and spool 2 connects, one end of described valve body 1 connects gas control valve body 6, is provided with first piston 7 and second piston 8 of spaced setting in described gas control valve body 6；One end of described spool 2 is equipped with the back-moving spring 9 being set in valve body 1, in the other end of described spool 2 stretches into gas control valve body 6 through valve body 1 and it is connected with first piston 7, the first inlet channel the 10, second inlet channel 11 and the 3rd inlet channel 12 is offered on described gas control valve body 6, described first inlet channel 10 is opened between first piston 7 and the second piston 8, described second inlet channel 11 is opened between first piston 7 and valve body 1, and the cavity that described 3rd inlet channel 12 is formed with the second piston 8 and gas control valve body 6 is interconnected.As a kind of preferably mode of this utility model, one end of gas control valve body 6 is connected with valve body 1, and the other end of described gas control valve body 6 is equipped with sealing lid 13, and described 3rd inlet channel 12 is opened on sealing lid 13.
In order to control the movement position of the second piston, it is provided with in gas control valve body 6 of the present utility model for the second piston 8 is carried out spacing spacing ring 14.Wherein, spacing ring 14 can be structure as a whole with gas control valve body 6, it is also possible to connects in gas control valve body 6.
As a kind of preferably mode of this utility model, first annular chamber the 15, second annular chamber 16 and the 3rd annular chamber 17 of spaced setting it is provided with in valve body 1, described first annular chamber 15 connects with the second annular chamber 16, described second annular chamber 16 connects with the 3rd annular chamber 17, described first annular chamber 15 connects with oil return opening 5, described second annular chamber 16 connects with oil-in 3, and described 3rd annular chamber 17 connects with oil-out 4；Described spool 2 is provided with and connects first annular chamber 15 and the first sealing ring 18 of the second annular chamber 16 for controlling, and described spool 2 is provided with and connects the second annular chamber 16 and the second sealing ring 19 of the 3rd annular chamber 17 for controlling；Described spool 2 is provided with for through valve body 1 the 3rd sealing ring 20 that is connected with first piston 7.Wherein, it is provided with sealing ring between the 3rd sealing ring 20 and valve body 1.
As a kind of preferably mode of this utility model, described valve body 1 offers overflow ducts 21, and described overflow ducts 21 is equipped with overflow valve 22, and described overflow ducts 21 connects with the second annular chamber 16；One end of described overflow ducts 21 connects with the second annular chamber 16, and the other end of described overflow ducts 21 connects with oil return opening 5, and described overflow valve 22 is disposed in the intersection of overflow ducts and oil return opening.
Being opened on valve body 1 along the radial direction of spool 2 as this utility model a kind of preferably mode, described overflow ducts 21 and oil return opening 5, one end of described overflow valve 22 coordinates through oil return opening 5 with overflow ducts 21.
Work process of the present utility model is: oil pump oil-out connects with oil-in through pipeline, when the first inlet channel, the second inlet channel and the 3rd inlet channel are all passed through without compressed gas, hydraulic oil enters from oil-in, flows out and through pipeline flows into fuel tank from oil return opening；After the first inlet channel is passed through compressed gas, when first piston promotes spool to the left to working position, oil-in and the channel enclosed of oil return opening, oil-in connects with oil-out, hydraulic oil enters from oil-in, flows out from oil-out, thus realizes the lifting action of hydraulic cylinder；When the second inlet channel is passed through compressed gas, when first piston pushes away to the right spool to working position, passage between oil-in, oil-out and oil return opening is all turned on, and the hydraulic oil in hydraulic cylinder flows out from oil-out and flows out from oil return opening so that hydraulic cylinder realizes normal decline；When the second inlet channel and the 3rd inlet channel are passed through compressed gas simultaneously when, first piston promotes to the right spool to working position, when second piston promotes first piston the most to the left to setting position, when spool also moves into setting working position, passage between oil-in and oil-out is restricted, channels open between oil-in and oil return opening, hydraulic oil in hydraulic cylinder flows out the restricted access between oil-out and oil-in from oil-out and flows out, then flow out from oil return opening, thus realize hydraulic cylinder slowly decline work.Compared to prior art, this utility model is capable of pneumatic control, for the rapid decrease of lifting and hydraulic cylinder realizing hydraulic cylinder and slowly decline, has the stable feature of control, it is ensured that the stationarity of hydraulic cylinder lifting.
This utility model is by being arranged at the overflow ducts 21 of the second annular chamber 16 connection simultaneously, has the effect of safeguard protection, improves security performance of the present utility model.
Embodiment one
The air control distribution valve of the present embodiment, including valve body and the spool being disposed in valve body, the oil-in for connecting is offered with oil pump, for the oil-out connected with hydraulic cylinder with for the refluxing opening connected with fuel tank on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected.
Embodiment two
The air control distribution valve of the present embodiment, including valve body and the spool being disposed in valve body, the oil-in for connecting is offered with oil pump, for the oil-out connected with hydraulic cylinder with for the refluxing opening connected with fuel tank on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected；One end of described gas control valve body is connected with valve body, and the other end of described gas control valve body is equipped with sealing lid, and described 3rd inlet channel is opened in sealing and covers.
Embodiment three
The air control distribution valve of the present embodiment, including valve body and the spool being disposed in valve body, the oil-in for connecting is offered with oil pump, for the oil-out connected with hydraulic cylinder with for the refluxing opening connected with fuel tank on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected；One end of described gas control valve body is connected with valve body, and the other end of described gas control valve body is equipped with sealing lid, and described 3rd inlet channel is opened in sealing and covers；It is provided with for the second piston is carried out spacing spacing ring in described Pneumatic valve body.
Embodiment four
On the basis of any of the above-described embodiment, the first annular chamber of spaced setting, the second annular chamber and the 3rd annular chamber it is provided with in described valve body, described first annular chamber connects with the second annular chamber, described second annular chamber and the connection of the 3rd annular chamber, described first annular chamber connects with oil return opening, described second annular chamber connects with oil-in, and described 3rd annular chamber connects with oil-out；Described spool is provided with the first sealing ring for controlling to connect first annular chamber and the second annular chamber, and described spool is provided with and connects the second annular chamber and the second sealing ring of the 3rd annular chamber for controlling.
Embodiment five
On the basis of embodiment four, described spool is provided with for through valve body the 3rd sealing ring that is connected with first piston.
Embodiment six
On the basis of embodiment four, described valve body offers overflow ducts, and described overflow ducts is equipped with overflow valve, described overflow ducts and the connection of the second annular chamber.
Embodiment seven
On the basis of embodiment six, one end of described overflow ducts connects with the second annular chamber, and the other end of described overflow ducts connects with oil return opening, and described overflow valve is disposed in the intersection of overflow ducts and oil return opening.
Embodiment eight
On the basis of embodiment seven, described overflow ducts and oil return opening are opened on valve body along the radial direction of spool, and one end of described overflow valve coordinates through oil return opening with overflow ducts.
Claims (8)
1. an air control distribution valve, including valve body and the spool being disposed in valve body, oil-in, oil-out and refluxing opening is offered on described valve body, the circular passage formed between described oil-in, oil-out and refluxing opening with valve body and spool connects, it is characterized in that, one end of described valve body connects gas control valve body, is provided with first piston and second piston of spaced setting in described Pneumatic valve body；One end of described spool is equipped with the back-moving spring being set in valve body, in the other end of described spool stretches into Pneumatic valve body through valve body and it is connected with first piston, the first inlet channel, the second inlet channel and the 3rd inlet channel is offered on described gas control valve body, described first inlet channel is opened between first piston and the second piston, described second inlet channel is opened between first piston and valve body, and the cavity that described 3rd inlet channel and the second piston and gas control valve body are formed is interconnected.
Air control distribution valve the most according to claim 1, it is characterised in that one end of described gas control valve body is connected with valve body, the other end of described gas control valve body is equipped with sealing lid, and described 3rd inlet channel is opened in sealing and covers.
Air control distribution valve the most according to claim 1, it is characterised in that be provided with for the second piston is carried out spacing spacing ring in described Pneumatic valve body.
4. according to the arbitrary described air control distribution valve of claim 1-3, it is characterized in that, the first annular chamber of spaced setting, the second annular chamber and the 3rd annular chamber it is provided with in described valve body, described first annular chamber connects with the second annular chamber, described second annular chamber and the connection of the 3rd annular chamber, described first annular chamber connects with oil return opening, and described second annular chamber connects with oil-in, and described 3rd annular chamber connects with oil-out；Described spool is provided with the first sealing ring for controlling to connect first annular chamber and the second annular chamber, and described spool is provided with and connects the second annular chamber and the second sealing ring of the 3rd annular chamber for controlling.
Air control distribution valve the most according to claim 4, it is characterised in that described spool is provided with for through valve body the 3rd sealing ring that is connected with first piston.
Air control distribution valve the most according to claim 4, it is characterised in that described valve body offers overflow ducts, described overflow ducts is equipped with overflow valve, described overflow ducts and the connection of the second annular chamber.
Air control distribution valve the most according to claim 6, it is characterised in that one end of described overflow ducts connects with the second annular chamber, the other end of described overflow ducts connects with oil return opening, and described overflow valve is disposed in the intersection of overflow ducts and oil return opening.
Air control distribution valve the most according to claim 7, it is characterised in that described overflow ducts and oil return opening are opened on valve body along the radial direction of spool, one end of described overflow valve coordinates through oil return opening with overflow ducts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067772.3U CN205503592U (en) | 2015-12-21 | 2015-12-21 | Gas accuse distribution valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067772.3U CN205503592U (en) | 2015-12-21 | 2015-12-21 | Gas accuse distribution valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503592U true CN205503592U (en) | 2016-08-24 |
Family
ID=56720090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521067772.3U Expired - Fee Related CN205503592U (en) | 2015-12-21 | 2015-12-21 | Gas accuse distribution valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869430A (en) * | 2018-09-18 | 2018-11-23 | 唐万刚 | A kind of small-sized distributing valve |
-
2015
- 2015-12-21 CN CN201521067772.3U patent/CN205503592U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869430A (en) * | 2018-09-18 | 2018-11-23 | 唐万刚 | A kind of small-sized distributing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160824 Termination date: 20201221 |