CN209278603U - A kind of solenoid valve - Google Patents
A kind of solenoid valve Download PDFInfo
- Publication number
- CN209278603U CN209278603U CN201822039745.5U CN201822039745U CN209278603U CN 209278603 U CN209278603 U CN 209278603U CN 201822039745 U CN201822039745 U CN 201822039745U CN 209278603 U CN209278603 U CN 209278603U
- Authority
- CN
- China
- Prior art keywords
- spool
- iron core
- solenoid valve
- dynamic iron
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of solenoid valves, belong to technical field of valve control, it specifically includes: coil case, coil block, valve body, stroke pipe, dynamic iron core and static iron core, the lower end of the dynamic iron core is equipped with spool, valve port is opened or closed to the spool with dynamic iron core is mobile, guiding axis is added in spool bottom surface center, and the size of the guiding axis is less than port size；The utility model is by the guiding function of guiding axis, so that spool and valve port exactitude position, and continued to move under the active force of spring force, until spool bottom surface and valve port tip contact, compression form sealing surface；And spool bottom surface is overlapped with the contact position of guiding axis every time, seal spool failure is avoided, sealing reliability is improved.
Description
Technical field
The utility model relates to technical field of valve control, in particular to a kind of solenoid valve.
Background technique
Solenoid valve is electromagnetically controlled industrial equipment, for a kind of actuator that can be rapidly opened and closed, is used in Industry Control system
Direction, flow, speed and the other parameters of medium are adjusted in system；It is expected to realize that solenoid valve can cooperate different circuits
Control；Its working principle is that: when energization, electromagnetic coil generates electromagnetic force and closure member is lifted from valve seat, and valve is opened；Power-off
When, electromagnetic force disappears, and reset spring is pressed in closure member on valve seat, and valve is closed；Electromagnetic valve structure is simple, have it is small in size,
The advantages such as fast response time are widely used in valve control field.
But in the prior art, the generally existing following problems of solenoid valve especially direct-acting electromagnetic valve: 1) spool is acting
When, the sealing material of spool contacts to form sealing surface to block valve port with valve port, but after spool perseveration, and bottom is easy
Squeezed and compressed by valve port, form the impression of ring-shaped depression, when spool is offset, the sealing surface that is newly formed by it is aforementioned
The indentation of generation runs through, and causes seal failure, and then electromagnetism valve breakdown is caused to fail；2) solenoid valve starting current and maintenance
Electric current is larger, and coil is easy to burn over time, shortens its working life, reduces the degree of reliability of its opening and closing, this is not only
Production and maintenance cost are increased, or even can therefore be led to a disaster；3) reset spring of solenoid valve enters locking shape from power-off
State has certain rebound displacement, this means that the spool of dynamic iron core lower end will also be sprung back, causes work not very reliable.
Utility model content
The purpose of this utility model is to provide a kind of solenoid valves, by the guiding function of guiding axis, so that spool and valve
Mouthful exactitude position, and being continued to move under the active force of spring force, until spool bottom surface and valve port tip contact, compress formed it is close
Cover；And spool bottom surface is overlapped with the contact position of guiding axis every time, seal spool failure is avoided, improving sealing can
By property.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of solenoid valve, including coil case, coil block, valve body, stroke pipe, dynamic iron core and static iron core, it is described dynamic
The lower end of iron core is equipped with spool, and the spool is with the mobile opening of dynamic iron core or the valve port of closed valve, the spool bottom surface center
Guiding axis is added, the size of the guiding axis is less than port size.
Further, the guiding axis is machined with chamfering on the outer peripheral surface of spool one end, and the chamfering is in from its top
Hold be gradually increased to its bottom diameter it is pyramidal.
Further, the guiding axis is threadedly coupled with spool.
Further, the spool is equipped with integrally formed compression bar close to dynamic iron core side coaxial line, and the compression bar is plugged in
In dynamic iron core.
It further, further include gland, the stroke pipe is connect by gland with valve body, and the compression bar passes through gland, is inserted
It is connected in dynamic iron core.
Further, the gland is equipped with through-hole, and the through-hole is closed in the dynamic iron core activity.
Further, the solenoid valve further includes power assistant spring, and the both ends of the power assistant spring bear against spool and pressure
Lid, the elastic force of the power assistant spring are less than the elastic force of reset spring.
Further, the upper and lower side of the coil block is respectively equipped with upper conduction magnetic board and lower magnetic conductive board.
Further, the valve body upper end is equipped with gas vent, and the gas vent is closed in spool activity.
The beneficial effects of the utility model are:
1, the utility model adds guiding axis in spool bottom surface center, when dynamic iron core acts down, because of drawing for guiding axis
Effect is led, so that spool and valve port exactitude position, and continued to move under the active force of spring force, until spool bottom surface and valve port
Tip contact, compression form sealing surface；And spool bottom surface is overlapped with the contact position of guiding axis every time, it is close to avoid spool
Envelope failure, improves sealing reliability.
2, it is equipped with integrally formed compression bar close to dynamic iron core side coaxial line in spool, is plugged in dynamic iron core by compression bar,
It may insure that spool always with dynamic iron core coaxial line, avoids the offset of spool, and using dismountable knot during the motion
Structure, installation and maintenance are also easier；Secondly under the synergistic effect of guiding axis, valve port, spool, compression bar and dynamic iron core are coaxial always
Line, spool further increase the stability of operation and the reliability of sealing without positional shift.
3, the utility model reset spring and power assistant spring, which are equipped with, can play the work for promoting dynamic iron core quickly to move
With the mobile required electromagnetic force of dynamic iron core reduces, and thus the solenoid valve resistance of start also accordingly reduces, response quickly, and then supplies
The electric current of electromagnetic force is applied widely, and the utility model can lead to coil current to avoid the variation because of use environment such as temperature etc.
Reduce to the influence that coil block the suction-combining force generates, overcome suction shakiness and spool occur and rise unstable disadvantage, improves
The climbing power of dynamic iron core, use reliability are high, applied widely.
4, after powering off, spool steadily moves down under reset spring restoring force and the effect of the elastic force of power assistant spring, closes valve
Mouthful, rebound displacement when reset spring rebounds suddenly is significantly reduced, valve port sealing effect is good, reliable operation.
5, each component dismountable mode such as is all gap-matched or is socketed and connects, and effectively improves packaging efficiency, and have
Conducive to detachable maintaining timely after damage of components and replacement.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the solenoid valve of the utility model；
Fig. 2 is the bottom view of Fig. 1；
In figure, 1, coil case；2, coil block；3, valve body；4, stroke pipe；5, dynamic iron core；6, static iron core；7, bullet is resetted
Spring；8, spool；81, compression bar；9, guiding axis；10, power assistant spring；11, gland；12, upper conduction magnetic board；13, lower magnetic conductive board；14, it arranges
Stomata.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
Embodiment
As shown in Fig. 1~2, a kind of solenoid valve, including coil case 1, coil block 2, valve body 3, stroke pipe 4, dynamic iron core 5
And static iron core 6, the coil block 2 is set in coil case 1 to be connected with external power supply, driving dynamic iron core 5 sliding when energization,
It is equipped with a valve chamber in the valve body 3, there is medium flow channel, medium flow pass and connection medium to flow into the valve chamber
The valve port in channel and medium flow pass, described 4 one end of stroke pipe are connected with valve body 3, the other end protrude into coil case 1 with its
Fixed, in stroke pipe 4 and valve chamber, the dynamic iron core 5 is the hollow tubular knot of upper end opening for the 5 activity cooperation of dynamic iron core
Structure, interior to be equipped with reset spring 7, the upper and lower ends of the reset spring 7 bear against static iron core 6 and dynamic iron core 5, the dynamic iron core
5 lower end is equipped with spool 8, and valve port is opened or closed to spool 8 with dynamic iron core 5 is mobile, and guiding axis is added in the 8 bottom surface center of spool
9, the size of the guiding axis 9 is less than port size.When dynamic iron core 5 acts down, 8 guiding axis 9 of spool is entered in valve port,
And continued to move under the active force of spring force, until 8 bottom surface of spool and valve port tip contact, compression form sealing surface；Because leading
The pressure of a ring-shaped depression is formed to the guiding function of axis 9 so that 8 bottom surface of spool is overlapped with the contact position of guiding axis 9 every time
Trace avoids 8 seal failure of spool, improves sealing reliability.
In the present embodiment, the guiding axis 9 is machined with chamfering on the outer peripheral surface of 8 one end of spool, and the chamfering is in certainly
Its top be gradually increased to its bottom diameter it is pyramidal, with preferably play spool 8 it is mobile when guiding role, reduce contraposition
Deviation and shaking in the process.
In the present embodiment, the guiding axis 9 is threadedly coupled with spool 8, easy to disassemble and replacement.
In the present embodiment, the spool 8 is equipped with integrally formed compression bar 81, the compression bar close to 5 side coaxial line of dynamic iron core
81 are plugged in dynamic iron core 5.Pass through 81 grafting of compression bar, it can be ensured that spool 8 is coaxial with dynamic iron core 5 always during the motion
Line improves the stability of movement, and uses dismountable structure, and installation and maintenance are also easier；Secondly in the collaboration of guiding axis 9
Under effect, coaxial line, spool 8 further increase operation without positional shift always for valve port, spool 8, compression bar 81 and dynamic iron core 5
The reliability of stability and sealing.
It further include gland 11 in the present embodiment, the stroke pipe 4 is connect by gland 11 with valve body 3, and the compression bar 81 is worn
Overpressure cap 11 is plugged in dynamic iron core 5.Gland 11 is added, can control the displacement of spool 8, makes it in preset path domain
Interior movement.
In the present embodiment, the gland 11 is equipped with through-hole (not shown), and it is logical that 5 activity of dynamic iron core closes this
Hole；I.e. electromagnetic valve work when, dynamic iron core 5 close the through-hole, solenoid valve close when, dynamic iron core 5 open the through-hole；Using this knot
Structure, can be when starting or closing solenoid valve, and the pressure between balance or discharge dynamic iron core 5 and 11 gap of gland acts on, and makes
The motion stability of iron core 5 is reliable.
In the present embodiment, the solenoid valve further includes power assistant spring 10, and the both ends of the power assistant spring 10 bear against valve
Core 8 and gland 11, the elastic force of the power assistant spring 10 are less than the elastic force of reset spring 7.
Under original state, coil block 2, which is not powered, does not generate magnetic force, under the action of reset spring 7, dynamic iron core 5
It moves down, band movable valve plug 8 blocks valve port, and power assistant spring 10 is in compressive state at this time；When the coil is energized, solenoid valve starts,
Dynamic iron core 5 moves up and power assistant spring 10 is replied, and spool 8 moves up opening valve port, and medium (such as gas) can be from medium
Flow channel enters medium flow pass, while reset spring 7 compresses；When the coil is de-energized, in the work of 7 restoring force of reset spring
Under, the mobile spool 8 of dynamic iron core 5 closes valve port so that solenoid valve is in close state.Therefore, when starting, ignore gland
11 and spool 8 gravity and other frictional force etc., the magneticaction (electromagnetic force) of coil block 2 only need to be greater than reset spring 7 with
Difference between power assistant spring 10, when closing, the restoring force of reset spring 7 makes spool 8 close valve port.So resetting bullet
Spring 7 and being equipped with for power assistant spring 10 can play the role of that dynamic iron core 5 is promoted quickly to move, and the movement of dynamic iron core 5 is required
Electromagnetic force reduces, and thus the solenoid valve resistance of start also accordingly reduces, response quickly, and then supplies the electric current scope of application of electromagnetic force
Extensively, the utility model can inhale coil block 2 to avoid because coil current is caused to reduce for the variation of use environment such as temperature etc.
The influence that resultant force generates overcomes suction shakiness and spool 8 occurs and rise unstable disadvantage, improves the climbing power of dynamic iron core 5,
Use reliability is high, applied widely.In the prior art, when solenoid valve starts, the magneticaction needs of coil block 2 overcome multiple
The resilient force of position spring 7, the resistance of motion increase, and will affect response speed, and control system is caused to generate lag, control system
If precision prescribed is high, hysteresis likely results in system with regard to unstable.Moreover, using the elasticity of electromagnetic force and two springs
Power difference controls the on-off of solenoid valve, allows each component the modes such as to be all gap-matched or be socketed, effectively improves group
Efficiency is filled, and is conducive to timely detachable maintaining and replacement after damage of components.
In the present embodiment, the upper and lower side of the coil block 2 is respectively equipped with upper conduction magnetic board 12 and lower magnetic conductive board 13, guarantees magnetic
Field distribution is uniform, effectively accelerates the speed that dynamic iron core 5 is attracted, increases attraction.
In the present embodiment, 3 upper end of valve body is equipped with gas vent 14, as shown in Fig. 2, the gas vent is closed in 8 activity of spool
14.At work, the gas vent 14 on 3 top of through-hole and valve body on gland 11 is in closed state, dynamic iron core 5 and row to solenoid valve
Journey pipe 4 is isolated with medium, and after solenoid valve is closed, the gas vent 14 on 3 top of through-hole and valve body on gland 11 is with 5 He of dynamic iron core
Spool 8 is moved down and is opened, and the gas part entered in valve chamber first passes through the through-hole on gland 11 and enters gland 11 and dynamic iron core 5
Between gap, the pressure of 11 upper and lower side of gland is approximate consistent, 5 vibration frequency of dynamic iron core is reduced, as spool 8 closes valve
Mouthful, gas vent 14 fully opens, gap outflow of the gas between gland 11 and dynamic iron core 5, and is discharged from gas vent 14, interior
Portion is restored to atmospheric pressure.11 through-hole of gland plays the role of balance or discharge pressure, solenoid valve motion stability are reliable；It opens again
When dynamic, influenced by the pressure of medium small.
Claims (9)
1. a kind of solenoid valve, which is characterized in that including coil case (1), coil block (2), valve body (3), stroke pipe (4), move
The lower end of iron core (5) and static iron core (6), the dynamic iron core (5) is equipped with spool (8), and the spool (8) is moved with dynamic iron core (5)
The valve port of dynamic opening or closed valve (3), spool (8) the bottom surface center are added guiding axis (9), the ruler of the guiding axis (9)
It is very little to be less than port size.
2. solenoid valve as described in claim 1, which is characterized in that the guiding axis (9) deviates from the outer peripheral surface of spool (8) one end
On be machined with chamfering, the chamfering is pyramidal in being gradually increased from its top to its bottom diameter.
3. solenoid valve as described in claim 1, which is characterized in that the guiding axis (9) is threadedly coupled with spool (8).
4. solenoid valve as described in claim 1, which is characterized in that the spool (8) is equipped with close to dynamic iron core (5) side coaxial line
Integrally formed compression bar (81), the compression bar (81) are plugged in dynamic iron core (5).
5. solenoid valve as claimed in claim 4, which is characterized in that further include gland (11), the stroke pipe (4) passes through gland
(11) it is connect with valve body (3), the compression bar (81) passes through gland (11), is plugged in dynamic iron core (5).
6. solenoid valve as claimed in claim 5, which is characterized in that the gland (11) is equipped with through-hole, the dynamic iron core (5)
The through-hole is closed in activity.
7. solenoid valve as described in claim 4 or 5, which is characterized in that the solenoid valve further includes power assistant spring (10), described
The both ends of power assistant spring (10) bear against spool (8) and gland (11), and the elastic force of the power assistant spring (10), which is less than, to be resetted
The elastic force of spring (7).
8. solenoid valve as described in claim 1, which is characterized in that the upper and lower side of the coil block (2), which is respectively equipped with, leads
Magnetic sheet (12) and lower magnetic conductive board (13).
9. solenoid valve as described in claim 1, which is characterized in that valve body (3) upper end is equipped with gas vent (14), spool
(8) gas vent (14) is closed in activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039745.5U CN209278603U (en) | 2018-12-04 | 2018-12-04 | A kind of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039745.5U CN209278603U (en) | 2018-12-04 | 2018-12-04 | A kind of solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209278603U true CN209278603U (en) | 2019-08-20 |
Family
ID=67610200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822039745.5U Expired - Fee Related CN209278603U (en) | 2018-12-04 | 2018-12-04 | A kind of solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209278603U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853328A (en) * | 2020-07-21 | 2020-10-30 | 北京七星华创流量计有限公司 | Flow control device and mass flow controller |
| CN115929925A (en) * | 2023-02-08 | 2023-04-07 | 保定平恩康汽车技术有限公司 | Fuel isolation valve of hybrid oil tank |
-
2018
- 2018-12-04 CN CN201822039745.5U patent/CN209278603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853328A (en) * | 2020-07-21 | 2020-10-30 | 北京七星华创流量计有限公司 | Flow control device and mass flow controller |
| CN115929925A (en) * | 2023-02-08 | 2023-04-07 | 保定平恩康汽车技术有限公司 | Fuel isolation valve of hybrid oil tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190820 Termination date: 20201204 |