CN202017670U - Normally-open type direct-acting two-position three-way reversing valve - Google Patents
Normally-open type direct-acting two-position three-way reversing valve Download PDFInfo
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- CN202017670U CN202017670U CN2011201313880U CN201120131388U CN202017670U CN 202017670 U CN202017670 U CN 202017670U CN 2011201313880 U CN2011201313880 U CN 2011201313880U CN 201120131388 U CN201120131388 U CN 201120131388U CN 202017670 U CN202017670 U CN 202017670U
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- iron core
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- tapped hole
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Abstract
The utility model relates to a normally-open type direct-acting two-position three-way reversing valve, which comprises an electromagnetic coil, a valve body, a static iron core assembly and a movable iron core assembly, wherein a third threaded hole as well as a first threaded hole and a second threaded hole which are communicated with the third threaded hole respectively are formed on the valve body; an inlet throttling hole is arranged in a communicated passage of the second and the third threaded holes; and the sectional area of the inlet throttling hole is smaller than or equal to the minimum sectional area of the axial through hole of the static iron core, and is smaller than or equal to the sectional area of the axial diversion trench of the movable iron core. In the utility model, the inlet throttling hole is arranged on the valve body, and the pressure difference between the upper end surface and the lower end surface of the movable iron core is smaller due to the throttling function of the inlet throttling hole, so that the electromagnetic force required by the direction changing operation is lowered, the power consumption is reduced, and the maximum intake pressure is improved.
Description
Technical field
The utility model relates to the selector valve that is applied in the pneumatic system, relates in particular to a kind of straight moving two position three way directional control valve open in usual.
Background technique
The direct-acting type two-position three-way selector valve is very common in pneumatic system, is divided into Normally closed type and two kinds of structures open in usual usually.The Normally closed type directly basic principle of moving two position three way directional control valve is: the electromagnetic force that produces during the electromagnetic coil energising is mentioned closure member valve open from valve seat; During outage, electromagnetic force disappears, and the spring handle closure member is pressed on the valve seat, valve closing.The basic principle of straight moving two position three way directional control valve open in usual is: the electromagnetic force that produces during the electromagnetic coil energising is mentioned closure member and seal pressurized air input channel, valve closing from valve seat; During outage, electromagnetic force disappears, and the spring handle closure member is pressed on the valve seat and the pressurized air input channel is opened, valve open.
The major defect of existing straight moving two position three way directional control valve open in usual is that the rigidity of moving iron core outer spring is big, causes the power consumption of solenoid valve big.In addition, the moving easy unstability of iron core inner spring; The highest suction pressure of selector valve is lower, generally is no more than 1.5MPa.
Summary of the invention
The utility model provides a kind of open in usual straight moving two position three way directional control valve low in energy consumption at the problems referred to above.
According to the technical solution of the utility model: a kind of straight moving two position three way directional control valve open in usual comprises electromagnetic coil, valve body, static iron core assembly and moving core assembly; First tapped hole and second tapped hole that offer the 3rd tapped hole on the described valve body and be connected with described the 3rd tapped hole respectively; Described static iron core assembly comprises the plunger tube that is fixed on described the 3rd tapped hole, described plunger tube outer fixing has described electromagnetic coil, described plunger tube has the static iron core of tape spool to through hole away from an end internal fixation of described valve body, forms the chamber that holds described moving core assembly between described static iron core and the described valve body; Described moving core assembly comprises the moving iron core that has the axial diversion groove, and described moving iron core internal fixation has following blocking and is supported on described lower seal last blocking beyond the Great Wall by moving iron core inner spring, is provided with moving iron core outer spring between described moving iron core and the described plunger tube; Be provided with the air inlet restriction hole in the communication passage of described second tapped hole and described the 3rd tapped hole, the sectional area in described air inlet restriction hole is smaller or equal to the minimum sectional area of described static iron core axial hole, and smaller or equal to the sectional area of described moving iron mandrel to guiding gutter.
Be provided with vent orifice in the communication passage of described first tapped hole and described the 3rd tapped hole.
The inside of described moving iron core inner spring is provided with round pin, and the two ends of described round pin are slidingly connected with described upward blocking and described blocking down respectively.
Described moving iron core inner spring is a cylindrical spring.
Described moving iron core outer spring is a taper spring, and the big end of described taper spring upwards is resisted against on the described plunger tube.
Described moving iron core is provided with spiracle.
On the described static iron core divided magnetic ring is installed.
Be provided with first seal ring between described static iron core and the described plunger tube.
The upper end of described static iron core assembly is connected with union nut, is provided with second seal ring between described union nut and the described static iron core assembly.
Be provided with the 3rd seal ring between described plunger tube and described the 3rd tapped hole.
Technique effect of the present utility model is: the utility model valve body is provided with the air inlet restriction hole, because the throttling action in air inlet restriction hole, make that the pressure reduction between moving iron core upper-end surface and the lower end surface is less, thereby make the required electromagnetic force of the utility model commutation reduce, reduce power consumption, and improved the highest suction pressure; The utility model is provided with round pin in moving core assembly, solved the destabilization problems of moving iron core inner spring, and has reduced the design of moving iron core inner spring and outer spring and made requirement.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the valve body in the utility model.
Fig. 3 is the structural representation of the static iron core assembly in the utility model.
Fig. 4 is the structural representation of the moving core assembly in the utility model.
Fig. 5 is the left view of Fig. 4.
Description of reference numerals: 1-terminal box, the 2-electromagnetic coil, the 3-valve body, 4-the 3rd seal ring, 5-moves the iron core outer spring, 6-moves core assembly, 7-static iron core assembly, the 8-spring washer, the 9-nut, 10-second seal ring, the 11-union nut, 12-first tapped hole, 13-second tapped hole, 14-air inlet restriction hole, the 15-vent orifice, 16-the 3rd tapped hole, the 17-plunger tube, the 18-divided magnetic ring, 19-first seal ring, the 20-static iron core, the 21-axial hole, the last blocking of 22-, 23-moves the iron core inner spring, the 24-round pin, 25-moves iron core, the 26-spiracle, blocking under the 27-, 28-axial diversion groove.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in Figure 1, the utility model is a kind of straight moving two position three way directional control valve open in usual, comprises electromagnetic coil 2, valve body 3, static iron core assembly 7 and moving core assembly 6, and electromagnetic coil 2 is provided with terminal box 1.
As shown in Figure 2, offering three tapped holes on the valve body 3, is respectively first tapped hole 12, second tapped hole 13 and the 3rd tapped hole 16.First tapped hole 12 is an exhaust port, and second tapped hole 13 is an inlet hole, and the 3rd tapped hole 16 is for installing the attachment hole of static iron core assembly 7.First tapped hole 12 and second tapped hole 13 are connected with the 3rd tapped hole 16 respectively, are provided with vent orifice 15 in the communication passage of first tapped hole 12 and the 3rd tapped hole 16.An improvement of the present utility model is to be provided with air inlet restriction hole 14 in the communication passage of second tapped hole 13 and the 3rd tapped hole 16.
As shown in Figure 3, static iron core assembly 7 comprises static iron core 20, divided magnetic ring 18, plunger tube 17 and first seal ring 19.One end of plunger tube 17 is provided with outside thread, and the other end internal fixation has the static iron core 20 of tape spool to through hole 21, is provided with first seal ring 19 between static iron core 20 and the plunger tube 17.Divided magnetic ring 18 is installed on the interior edge face of static iron core 20.
See Fig. 1, the lower end of plunger tube 17 is threaded in the 3rd tapped hole 16 of valve body 3, is provided with the 3rd seal ring 4 between plunger tube 17 and the 3rd tapped hole 1; The upper end of plunger tube 17 is plugged in the electromagnetic coil 2 and therefrom passes, and is fixing with nut 9, is provided with elastic washer 8 between nut 9 and the electromagnetic coil 2; The upper end of plunger tube 17 is connected with union nut 11, is provided with second seal ring 10 between union nut 11 and the plunger tube 17.Form the chamber that holds moving core assembly 6 in the plunger tube 17 between the 3rd tapped hole 16 of the lower space of static iron core 20 and valve body 3.
As Fig. 4, shown in Figure 5, moving core assembly 6 comprises the moving iron core 25 that has axial diversion groove 28, and the quantity of axial diversion groove 28 can be one or more, preferably adopts two and be symmetrical arranged.The inside of moving iron core 25 has axial hole, this through hole internal fixation following blocking 27 is arranged and be supported on by moving iron core inner spring 23 on the blocking 27 down on blocking 22, moving iron core inner spring 23 is cylindrical spring.Moving iron core 25 walls are provided with the spiracle 26 that communicates with axial hole.Moving iron core 25 is installed down, and an end of blocking 27 also is provided with flange.Another improvement of the present utility model is, is provided with round pin 24 in the inside of moving iron core inner spring 23, the two ends of round pin 24 respectively by last blocking 22 and down blocking 27 be slidingly connected.
Again referring to Fig. 1, when moving core assembly 6 is installed in the chamber of plunger tube 17 bottoms, last blocking 22 up, corresponding with the axial hole 21 of static iron core 20, following blocking 27 is downward, corresponding with the vent orifice 15 of valve body 3, the axial diversion groove 28 of moving iron core 25 is connected with the air inlet restriction hole 14 of valve body 3.Be provided with moving iron core outer spring 5 between the step surface in the flange of moving iron core 25 and the plunger tube 17, moving iron core outer spring 5 is a taper spring, and the big end of taper spring upwards is resisted against on the plunger tube 17.
The following setting of sectional area in the air inlet restriction hole 14 in the utility model valve body 3: the sectional area in air inlet restriction hole 14 is smaller or equal to the minimum sectional area of static iron core 20 axial holes 21, and smaller or equal to the sectional area of moving iron core 25 axial diversion grooves 28.
The utility model is under electromagnetic coil 2 cold situations, the spring force of moving iron core outer spring 5 promotes moving core assembly 6 and moves down, make down blocking 27 seal vent orifice 15 on the valve body 3, passage between second tapped hole 13 on axial hole 21 on the static iron core 20 and the valve body 3 is opened, and shows that the utility model is in normally open.
Working procedure of the present utility model is as follows: during the utility model work, pressurized air enters axial hole 21 on the static iron core 20 by the tracheae that links to each other with union nut 11, enter air inlet restriction hole 14 on the valve body 3 by the axial diversion groove 28 on the moving iron core 25 again, enter executive components such as cylinder, jettron by the tracheae that links to each other with second tapped hole 13 on the valve body 3 at last.When electromagnetic coil 2 energisings, electromagnetic force overcomes the spring force of moving iron core outer spring 5 and the pressure difference between moving iron core 25 upper and lower end faces, make on the core assembly 6 and move, last blocking 22 is sealed the axial hole 21 on the static iron core 20, passage between the vent orifice 15 on the valve body 3 and second tapped hole 13 is opened, pressurized air between the executive component such as cylinder, jettron and second tapped hole 13 in the tracheae is discharged by first tapped hole 12, show that the utility model finishes commutation, and be in closed state.
The utility model changes the bigger air inlet through hole of sectional area that does not have throttling action on the valve body of existing direct-acting type two-position three-way selector valve into the sectional area less air inlet restriction hole with throttling action, because the throttling action in air inlet restriction hole 14, make that the pressure reduction between moving iron core 25 upper-end surfaces and the lower end surface is less, thereby make the required electromagnetic force of the utility model commutation reduce, reduced power consumption, and the highest suction pressure can reach more than the 1.6MPa, also is higher than existing direct-acting type two-position three-way selector valve.In addition,, can solve the destabilization problems of moving iron core inner spring 23, and reduce the design of moving iron core inner spring 23 and outer spring 5 and make requirement owing to be provided with round pin 24 in the moving core assembly 6.
Claims (10)
1. a straight moving two position three way directional control valve open in usual comprises electromagnetic coil (2), valve body (3), static iron core assembly (7) and moving core assembly (6); Offer the 3rd tapped hole (16) and first tapped hole (12) that is connected with described the 3rd tapped hole (16) respectively and second tapped hole (13) on the described valve body (3); Described static iron core assembly (7) comprises the plunger tube (17) that is fixed on described the 3rd tapped hole (16), described plunger tube (17) outer fixing has described electromagnetic coil (2), described plunger tube (17) has the static iron core (20) of tape spool to through hole (21) away from an end internal fixation of described valve body (3), forms the chamber that holds described moving core assembly (6) between described static iron core (20) and the described valve body (3); Described moving core assembly (6) comprises the moving iron core (25) that has axial diversion groove (28), described moving iron core (25) internal fixation has following blocking (27) and is supported on the last blocking (22) on the blocking (27) described time by moving iron core inner spring (23), be provided with moving iron core outer spring (5) between described moving iron core (25) and the described plunger tube (17), it is characterized in that: be provided with air inlet restriction hole (14) in the communication passage of described second tapped hole (13) and described the 3rd tapped hole (16), the sectional area in described air inlet restriction hole (14) is smaller or equal to the minimum sectional area of described static iron core (20) axial hole (21), and smaller or equal to the sectional area of described moving iron core (25) axial diversion groove (28).
2. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: be provided with vent orifice (15) in the communication passage of described first tapped hole (12) and described the 3rd tapped hole (16).
3. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: the inside of described moving iron core inner spring (23) is provided with round pin (24), and the two ends of described round pin (24) are slidingly connected with described upward blocking (22) and described blocking (27) down respectively.
4. according to the described straight moving two position three way directional control valve open in usual of claim 3, it is characterized in that: described moving iron core inner spring (23) is a cylindrical spring.
5. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: described moving iron core outer spring (5) is a taper spring, and the big end of described taper spring upwards is resisted against on the described plunger tube (17).
6. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: described moving iron core (25) is provided with spiracle (26).
7. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: divided magnetic ring (18) is installed on the described static iron core (20).
8. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: be provided with first seal ring (19) between described static iron core (20) and the described plunger tube (17).
9. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: the upper end of described static iron core assembly (7) is connected with union nut (11), is provided with second seal ring (10) between described union nut (11) and the described static iron core assembly (7).
10. according to the described straight moving two position three way directional control valve open in usual of claim 1, it is characterized in that: be provided with the 3rd seal ring (4) between described plunger tube (17) and described the 3rd tapped hole (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201313880U CN202017670U (en) | 2011-04-28 | 2011-04-28 | Normally-open type direct-acting two-position three-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201313880U CN202017670U (en) | 2011-04-28 | 2011-04-28 | Normally-open type direct-acting two-position three-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017670U true CN202017670U (en) | 2011-10-26 |
Family
ID=44811340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201313880U Expired - Lifetime CN202017670U (en) | 2011-04-28 | 2011-04-28 | Normally-open type direct-acting two-position three-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179783A (en) * | 2015-10-30 | 2015-12-23 | 刘海山 | Linear electromagnetic valve |
-
2011
- 2011-04-28 CN CN2011201313880U patent/CN202017670U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179783A (en) * | 2015-10-30 | 2015-12-23 | 刘海山 | Linear electromagnetic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |
|
| CX01 | Expiry of patent term |