CN203948648U - Duplex channel pressure medium sealing valve unit - Google Patents
Duplex channel pressure medium sealing valve unit Download PDFInfo
- Publication number
- CN203948648U CN203948648U CN201420330491.1U CN201420330491U CN203948648U CN 203948648 U CN203948648 U CN 203948648U CN 201420330491 U CN201420330491 U CN 201420330491U CN 203948648 U CN203948648 U CN 203948648U
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- Prior art keywords
- valve
- chamber
- valve chamber
- spool
- pilot hole
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Abstract
The utility model relates to a kind of duplex channel pressure medium sealing valve unit, belong to valve technology field, comprise valve body, valve gap, valve body both sides arrange the first medium passage communicating with inner chamber, second medium passage, in valve body, be provided with spool, piston is equipped with in spool lower end, piston and valve body form valve port, in spool, set gradually uuper valve chamber, lower valve chamber, between uuper valve chamber and lower valve chamber, diaphragm is set, diaphragm center arranges connection uuper valve chamber, the upper pilot hole of lower valve chamber, lower valve chamber bottom arranges the lower pilot hole that is communicated with lower valve chamber and valve port, uuper valve chamber communicates with second medium passage by the second runner, lower valve chamber communicates with first medium passage by first flow, center spool arranges valve rod, Sealing and upper pilot hole fitted seal are set on valve rod, stem bottom arranges lower seal and lower pilot hole fitted seal.When the utility model ensures pressure medium sealing, realize the two-way all negotiable mode of operations of medium.
Description
Technical field
The utility model relates to a kind of duplex channel pressure medium sealing valve unit, belongs to valve technology field.
Background technique
At present, solenoid valve is in pipeline control, the extensive use of automation equipment control field, the existing solenoid valve sealing by pressure medium has direct action solenoid valve and straight moving distributed direct moving electromagnetic valve of being combined with leading type etc., distributed direct moving electromagnetic valve principle is: when energising, electromagnetic coil produces electromagnetic force mentions little guide valve and main valve successively, and valve open, after the little valve of guide is opened, solenoid valve epicoele, by pilot hole release, easily opens main valve.When power-off, under the effect of spring force and main valve plug gravity, valve rod resets, and the little valve of guide and main valve are closed successively, valve closing.Existing valve assembly structural requirement valve both sides have forward pressure reduction, can only carry out one-way only operation, and can not be used for the environment that some need medium reverse circulated or medium direction-agile, have limited the use of solenoid valve.
Model utility content
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is: a kind of duplex channel pressure medium sealing valve unit is provided, when ensureing pressure medium sealing, realizes the two-way all negotiable mode of operations of medium.
Duplex channel pressure medium sealing valve unit described in the utility model, comprise valve body, valve gap, valve body both sides arrange the first medium passage communicating with inner chamber, second medium passage, in valve body, be provided with spool, piston is equipped with in spool lower end, piston and valve body form valve port, in spool, set gradually uuper valve chamber, lower valve chamber, between uuper valve chamber and lower valve chamber, diaphragm is set, diaphragm center arranges connection uuper valve chamber, the upper pilot hole of lower valve chamber, lower valve chamber bottom arranges the lower pilot hole that is communicated with lower valve chamber and valve port, uuper valve chamber communicates with second medium passage by the second runner, lower valve chamber communicates with first medium passage by first flow, center spool arranges valve rod, Sealing and upper pilot hole fitted seal are set on valve rod, stem bottom arranges lower seal and lower pilot hole fitted seal.
By uuper valve chamber and lower valve chamber are set in spool, and lower valve chamber is communicated with first medium passage by first flow, uuper valve chamber communicates with second medium passage by the second runner, thereby when medium is flowed into by first medium passage or second medium passage, all can seal spool by pressure medium, lower pilot hole and upper pilot hole are set simultaneously, make forward and oppositely all can realize leading type sealing configuration, when ensureing pressure medium sealing, realize the two-way all negotiable mode of operations of medium, be applicable to the distributed direct moving electromagnetic valve of Chang Kai or normal close type.
The second described runner is arranged in spool wall place, and its lower end mouth is arranged on lower valve chamber below.
Described upper pilot hole external diameter is greater than valve rod external diameter 1mm, and sealing effect when excessive impact is flowed into by first medium passage is too smallly easily stopped up by valve rod.
Between described spool upper end and valve gap, form back of the body chamber, between uuper valve chamber and back of the body chamber, be provided with equalizing orifice, by the pressure in equalizing orifice balance back of the body chamber.
Between described spool and valve gap, be provided with two seals ring, better to carry out the sealing between spool and valve gap.
In the time that medium is flowed into by first medium passage, medium is in first flow enters lower valve chamber, while opening, under driving, valve rod final controlling element up moves up, and drive in lower seal and move, lower pilot hole is opened, medium is in lower pilot hole enters second medium passage, carry out pressure release, simultaneously, upper Sealing is opened upper pilot hole, thereby pressure release is carried out in back of the body chamber, in continuation along with valve rod, move, on upper Sealing and lower seal band movable valve plug, move, and, around spool, forming low high pressure reduction, under the effect of pressure difference, hydrodynamic pressure promotes spool and moves up, thereby by valve open.While closing, valve rod moves down under final controlling element effect, and first valve rod closes upper pilot hole, lower pilot hole by upper Sealing, lower seal, continues to promote spool, and valve port is closed.
In the time that medium is flowed into by second medium passage, medium enters in uuper valve chamber through the second runner, while opening, under driving, valve rod final controlling element up moves up, valve rod drives on upper Sealing and moves, upper pilot hole is opened, medium enters in lower valve chamber and carries out pressure release through upper pilot hole, carries on the back chamber pressure release simultaneously, in the continuation along with valve rod, moves, on upper Sealing and lower seal band movable valve plug, move, and, forming low high pressure reduction around spool, under the effect of pressure difference, hydrodynamic pressure promotes spool and moves up, thereby by valve open.While closing, valve rod moves down under final controlling element effect, and first valve rod closes upper pilot hole, lower pilot hole by upper Sealing, lower seal, continues to promote spool, and valve port is closed.
Compared with prior art, the beneficial effect the utlity model has is:
This duplex channel pressure medium sealing valve unit is by arranging uuper valve chamber and lower valve chamber, make medium in the time flowing into by first medium passage or second medium passage, enter respectively in lower valve chamber or uuper valve chamber, thereby realize two-way pressure medium sealing, be applicable to the distributed direct moving electromagnetic valve of Chang Kai or normal close type, use flexibly Applicable scope.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure: 1, valve body; 2, first flow; 3, seal ring; 4, spool; 5, valve gap; 6, valve rod; 7, back of the body chamber; 8, equalizing orifice; 9, upper Sealing; 10, uuper valve chamber; 11, upper pilot hole; 12, diaphragm; 13, lower seal; 14, lower valve chamber; 15, second medium passage; 16, sealing gasket; 17, the second runner; 18, lower pilot hole; 19, valve port; 20, first medium passage.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figure 1, this duplex channel pressure medium sealing valve unit comprises valve body 1, valve gap 5, valve body 1 both sides arrange the first medium passage 20 communicating with inner chamber, second medium passage 15, in valve body 1, be provided with spool 4, piston is equipped with in spool 4 lower ends, piston and valve body 1 form valve port 19, in spool 4, set gradually uuper valve chamber 10, lower valve chamber 14, between uuper valve chamber 10 and lower valve chamber 14, diaphragm 12 is set, diaphragm 12 centers arrange and are communicated with uuper valve chamber 10, the upper pilot hole 11 of lower valve chamber 14, lower valve chamber 14 bottoms arrange the lower pilot hole 18 that is communicated with lower valve chamber 14 and valve port 19, uuper valve chamber 10 communicates with second medium passage 15 by the second runner 17, the second runner 17 is arranged in spool wall place, its lower end mouth is arranged on lower valve chamber 14 belows, its passage along spool 4 sidewalls upwards.The second runner 17 arranges two groups, its upper end-hole in being arranged on the same annular groove of uuper valve chamber 14 bottoms, in the time that medium is entered by first medium passage 20, valve opening, then, while closing, the medium being trapped in uuper valve chamber 10 can flow out through annular groove and two group of second runner 17.Lower valve chamber 14 communicates with first medium passage 20 by first flow 2, spool 4 centers arrange valve rod 6, Sealing 9 and upper pilot hole 11 fitted seal are set on valve rod 6, upper pilot hole 11 external diameters are greater than valve rod 6 external diameter 1～3mm, and valve rod 6 bottoms arrange lower seal 13 and lower pilot hole 18 fitted seal.Between uuper valve chamber 10 and back of the body chamber 7, be provided with equalizing orifice 8.Between spool 4 upper ends and valve gap 5, form back of the body chamber 7, between spool 4 and valve gap 5, be provided with two seals ring 3.Spool 4 bottoms are provided with groove, sealing gasket 16 is housed in groove and seals.
Working procedure:
In the time that medium is flowed into by first medium passage 20, medium is in first flow 2 enters lower valve chamber 14, while opening, under driving, valve rod 6 final controlling element up moves up, valve rod 6 drives in lower seal 13 and moves, lower pilot hole 18 is opened, medium enters in second medium passage 15 through lower pilot hole 18, carry out pressure release, simultaneously, upper Sealing 9 is opened upper pilot hole 11, thereby pressure release is carried out in back of the body chamber 7, in continuation along with valve rod 6, move, upper Sealing 9 and lower seal 13 are with on movable valve plug 4 and are moved, and, around spool 4, forming low high pressure reduction, under the effect of pressure difference, hydrodynamic pressure promotes spool 4 and moves up, thereby valve port 19 is opened.While closing, valve rod 6 moves down under final controlling element effect, and first valve rod 6 closes upper pilot hole 11, lower pilot hole 18 by upper Sealing 9, lower seal 13, continues to promote spool 4, and valve port 19 is closed.
In the time that medium is flowed into by second medium passage 15, medium enters in uuper valve chamber 10 through the second runner 17, while opening, under driving, valve rod 6 final controlling element up moves up, valve rod 6 drives on upper Sealing 9 and moves, upper pilot hole 11 is opened, medium enters and in lower valve chamber 14, carries out pressure release through upper pilot hole 11, carry on the back chamber 7 pressure releases simultaneously, in continuation along with valve rod 6, move, upper Sealing 9 and lower seal 13 are with on movable valve plug 4 and are moved, and, around spool 4, forming low high pressure reduction, under the effect of pressure difference, hydrodynamic pressure promotes spool 4 and moves up, thereby valve port 19 is opened.While closing, valve rod 6 moves down under final controlling element effect, and valve rod 6 is closed upper pilot hole 11, lower pilot hole 18 by upper Sealing 9, lower seal 13, continues to promote spool 4, and valve port 19 is closed.
Claims (5)
1. a duplex channel pressure medium sealing valve unit, comprise valve body (1), valve gap (5), valve body (1) both sides arrange the first medium passage (20) communicating with inner chamber, second medium passage (15), in valve body (1), be provided with spool (4), piston is equipped with in spool (4) lower end, piston and valve body (1) form valve port (19), it is characterized in that: in spool (4), set gradually uuper valve chamber (10), lower valve chamber (14), between uuper valve chamber (10) and lower valve chamber (14), diaphragm (12) is set, diaphragm (12) center arranges and is communicated with uuper valve chamber (10), the upper pilot hole (11) of lower valve chamber (14), lower valve chamber (14) bottom arranges the lower pilot hole (18) that is communicated with lower valve chamber (14) and valve port (19), uuper valve chamber (10) communicates with second medium passage (15) by the second runner (17), lower valve chamber (14) communicates with first medium passage (20) by first flow (2), spool (4) center arranges valve rod (6), Sealing (9) and upper pilot hole (11) fitted seal are set on valve rod (6), valve rod (6) bottom arranges lower seal (13) and lower pilot hole (18) fitted seal.
2. duplex channel pressure medium sealing valve unit according to claim 1, is characterized in that: described the second runner (17) is arranged in spool wall place, and its lower end mouth is arranged on lower valve chamber (14) below.
3. duplex channel pressure medium sealing valve unit according to claim 1, is characterized in that: described upper pilot hole (11) external diameter is greater than valve rod (6) external diameter 1mm.
4. duplex channel pressure medium sealing valve unit according to claim 1, it is characterized in that: between described spool (4) upper end and valve gap (5), form back of the body chamber (7), between uuper valve chamber (10) and back of the body chamber (7), be provided with equalizing orifice (8).
5. duplex channel pressure medium sealing valve unit according to claim 1, is characterized in that: between described spool (4) and valve gap (5), be provided with two seals ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330491.1U CN203948648U (en) | 2014-06-19 | 2014-06-19 | Duplex channel pressure medium sealing valve unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330491.1U CN203948648U (en) | 2014-06-19 | 2014-06-19 | Duplex channel pressure medium sealing valve unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948648U true CN203948648U (en) | 2014-11-19 |
Family
ID=51890685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420330491.1U Expired - Fee Related CN203948648U (en) | 2014-06-19 | 2014-06-19 | Duplex channel pressure medium sealing valve unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948648U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763810A (en) * | 2016-12-28 | 2017-05-31 | 宁波方太厨具有限公司 | The sensitive water servomechanism of one kind control |
| CN110440003A (en) * | 2019-06-25 | 2019-11-12 | 杭州电子科技大学 | One kind is based on pulsation performance inclusion seal device |
-
2014
- 2014-06-19 CN CN201420330491.1U patent/CN203948648U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763810A (en) * | 2016-12-28 | 2017-05-31 | 宁波方太厨具有限公司 | The sensitive water servomechanism of one kind control |
| CN106763810B (en) * | 2016-12-28 | 2022-11-18 | 宁波方太厨具有限公司 | Water volume server with sensitive control |
| CN110440003A (en) * | 2019-06-25 | 2019-11-12 | 杭州电子科技大学 | One kind is based on pulsation performance inclusion seal device |
| CN110440003B (en) * | 2019-06-25 | 2024-04-09 | 杭州电子科技大学 | Leakage-free sealing device based on pulsation performance |
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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: 20141119 Termination date: 20190619 |