CN207921445U - High-speed electromagnetic valve - Google Patents
High-speed electromagnetic valve Download PDFInfo
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- CN207921445U CN207921445U CN201820315159.6U CN201820315159U CN207921445U CN 207921445 U CN207921445 U CN 207921445U CN 201820315159 U CN201820315159 U CN 201820315159U CN 207921445 U CN207921445 U CN 207921445U
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- spool
- valve body
- valve
- fluid
- pressure
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- 239000012530 fluid Substances 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000003068 static effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a kind of high-speed electromagnetic valves, including：The tail portion of spool abuts against return spring by spring base, spring base offers throttle orifice, low pressure chamber is separated into ante-chamber and back cavity by throttle orifice, and pressure is acted on spool by fluid from front to back through ante-chamber, and fluid crosses ebb interval through back cavity, magnetic gap and annular and pressure is acted on spool from back to front.The seal spool conical surface of the utility model is different from the cone angle of the valve base sealing conical surface, band is formed when the two reclines, this band keeps the area for the Fluid pressure that spool rear and front end is subject to essentially equal, so that the opening force of spool is not influenced by Fluid pressure size, simultaneously, due to being provided with throttle orifice on spring base, in the unlatching moment of spool and turn-off transient, keep the power that spool is subject to uneven, this out-of-balance force is more conducive to the opening and closing for accelerating spool, to improve the responding ability of valve, it is particularly suitable for the High-speed Control of big flow liquid or big flow gas.
Description
Technical field
The utility model is related to Solenoid Valve Technology field more particularly to a kind of solenoid valves of energy high-speed response.
Background technology
For high-speed electromagnetic valve, the out-of-balance force that Fluid pressure generates increases with the increase of spool size, and meeting
Seriously affect the movement of spool.Therefore the valve core diameter of well known high-speed electromagnetic valve cannot be too big, i.e. flow very little.
In order in the case of big flow, improve the response speed of valve, Chinese invention patent CN103256267A is disclosed
A kind of hydraulic High-speed digital valve, including valve body and the spool being slidably mounted in the valve body, one end of spool is equipped with sealing surface
And match to form seal interface with the sealing surface in the valve body, the both sides of seal interface are respectively arranged with oil inlet passage and go out
Hydraulic fluid port, oil inlet passage between the valve body and spool and around spool, make the digital valve in the off state hydraulic pressure into
Oil is zero to the effect resultant force of the spool, and the oil outlet is located at one end of the valve body.Its oil outlet pressure passes through channel
It is transmitted to pressure balance chamber, the suffered axial force resultant force of spool is zero.Therefore, the design of spool size is no longer influenced by hydraulic pressure
Limitation, big flow digital valve may be implemented, and under the action of electromagnetic force and spring force, realize quick response.
The digital valve is there are still the following place that has much room for improvement, 1) electromagnet and electromagnetic coil are respectively positioned on the end of valve body, electricity
Magnetic efficiency is low；2) valve body is contacted with the sealing of spool using face, and difficulty of processing is big, with contact surface uneven wear, is easy out
The problem of being now not closed completely；Also, the sealing surface of face contact causes the hydraulic oil effect in valve closing state, oil outlet
Area in spool closing direction, will be greater than the area of opening direction, and resultant force of the hydraulic oil to spool in the direction of motion is not
Zero, the power for making spool close will be generated, so that the movement of spool is restricted, or even cannot open, therefore the structure can be used only in
In the little hydraulic control of outlet pressure, using being restricted.
In the hydraulic High-speed digital valve set in Chinese invention patent CN104315159A and a kind of disclosed solenoid valve, on
It states technical problem and obtains a degree of solution comprising valve body and the spool being slidably mounted in the valve body, after spool
End cap is equipped with columned moving armature, is equipped in the valve body at moving armature rear and determines armature, valve body include front valve shell, rear valve body with
And the spacer being arranged between front valve shell and rear valve body, front valve shell and rear valve body are made of permeability magnetic material, spacer is by magnetic separator
It is made；The interface for determining armature and moving armature is located at the overlay area of spacer；It is another to have annulus assembly set mounted in the outer of valve body
Side.Electromagnetic coil is located at the stage casing of valve body, and overall structure is compacter；The position for determining armature can be easily adjusted, to micro-
It sets up, the gap of moving armature；The conicoid that the inclination angle of spool and valve body junction is not waited ensures to carry while spool stress balance
High sealing effect, can be to avoid leakage caused by sealing surface uneven wear.
Chinese invention patent CN104913099A also discloses that similar structure.
But with the deep progress of practice, and it is found that problems with：1) between spool guide surface and valve pocket, between being
Gap coordinates, and fluid can generate aerial drainage by the gap；2) response speed of spool, the space also promoted.
Utility model content
The above deficiency for the above-mentioned prior art, the utility model provides a kind of high-speed electromagnetic valve, to improve spool
Corresponding speed.
In order to solve the above technical problems, a kind of high-speed electromagnetic valve of the utility model, including：Valve body, the valve body include
Front valve shell and rear valve body, the rear valve body are connected with rear valve body end cap, and the rear valve body end cap is fixedly connected with the front valve shell；
The front valve shell offers fluid inlet and fluid outlet, and seat portion and spool mounting hole are provided in the front valve shell；Spool,
The spool is slidably matched with the spool mounting hole, and the head of the spool is provided with the seal spool conical surface, the seat portion
It is provided with the valve base sealing conical surface, is formed when the seal spool conical surface is different from the cone angle of the valve base sealing conical surface, the two reclines close
Band is sealed, the spool offers axial pass-through holes, and the axial pass-through holes are communicated with the fluid outlet, and the band is by institute
State the low pressure chamber that valve body is separated into the high-pressure area communicated with the fluid inlet and is communicated with the fluid outlet；Moving armature,
Static gag bit and electromagnetic coil, the moving armature are fixed on the tail portion of the spool, and the static gag bit is fixed on the rear valve body, institute
Sheathed spring sleeve in the endoporus of static gag bit is stated, return spring, the endoporus of the electromagnetic coil are provided in the spring spool
In be provided with magnetism-isolating loop, the rear valve body, the rear valve body end cap and the magnetism-isolating loop are enclosed in the surrounding of the electromagnetic coil；
Centre bore of the moving armature through the rear valve body end cap stretches into the endoporus of the magnetism-isolating loop, and the static gag bit is stretched into from the other end
The endoporus of the magnetism-isolating loop, two end faces are opposite, intermediate there are magnetic gap, the endoporus of the moving armature and the rear valve body end cap with
And annular is all had between the magnetism-isolating loop endoporus and crosses ebb interval；The tail portion of the spool abuts against described return by spring base
Position spring, the spring base offer throttle orifice, and the low pressure chamber is separated into ante-chamber and back cavity, the fluid by the throttle orifice
Pressure is acted on into spool from front to back through the ante-chamber, the fluid is through the back cavity, the magnetic gap and the annular mistake
Pressure is acted on the spool by ebb interval from back to front.
Preferably, it is provided with shaft sealer between the guide surface of the spool and the valve body.
Preferably, the shaft sealer is sealing ring.
After adopting the above technical scheme, the utility model has the technical effect that, the head of spool is provided with seal spool cone
Face, seat portion are provided with the valve base sealing conical surface, and the seal spool conical surface is different from the cone angle of the valve base sealing conical surface, the two reclines
When form band, this band keeps the area for the Fluid pressure that spool rear and front end is subject to essentially equal, so that valve
The opening force of core is not influenced by Fluid pressure size, simultaneously as throttle orifice is provided on spring base, in the unlatching of spool
Moment and turn-off transient keep the power that spool is subject to uneven, this out-of-balance force, which is more conducive to, to be accelerated spool unlatching and close
It closes, to improve the responding ability of valve, is particularly suitable for the High-speed Control of liquid or gas.
In addition, be provided with shaft sealer between the guide surface of the spool and the valve body, avoid spool guide surface with
Fluid drainage is generated between valve body.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model high-speed electromagnetic valve embodiment 1；
Fig. 2 is the partial enlarged view at II in Fig. 1；
Fig. 3 is the partial enlarged view at I in Fig. 1；
Fig. 4 is the structure sectional view of the utility model high-speed electromagnetic valve embodiment 2；
Fig. 5 is and the partial enlarged view in Fig. 4 at III；
In figure, 1- front valve shells, 2- spools, 3- rear valve body end caps, 4- rear valve bodies, 5- electromagnetic coils, 6- magnetism-isolating loops, the quiet ranks of 7-
Iron, 8- spring spools, 9- return springs, 10- spring bases, 101- throttle orifices, 11- moving armatures, 12- fluid outlets, 13- fluids into
Mouthful, 14- sealing rings, the 1a- valve base sealing conical surfaces, the 2a- seal spool conical surfaces, the 1b- valve base sealing conical surfaces, the 2b- seal spool conical surfaces,
T- magnetic gaps, A- ante-chambers, B- back cavities.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
For ease of description, the side that electromagnetic coil is arranged is defined as " rear ", opposite side is defined as " preceding ".
Embodiment 1
As shown in Figure 1, a kind of high-speed electromagnetic valve, the valve body of digital valve includes front valve shell 1 and rear valve body 4, and rear valve body 4 connects
There are rear valve body end cap 3, rear valve body end cap 3 to be fixedly connected with front valve shell 1.
Front valve shell 1 offers fluid inlet 13 and fluid outlet 12, and fluid outlet 12 is located at 1 end of front valve shell, fluid into
Mouth 13 is located at 1 peripheral wall of front valve shell.
Seat portion and spool mounting hole are provided in front valve shell 1.Spool 2 is slidably matched with spool mounting hole, and spool 2 is led
To sealing ring 14 is provided between face and valve body 1, sealing ring 14 is shaft sealer, avoids producing between spool guide surface and valve body
Raw fluid drainage.
As shown in figure 3, the head of spool 2 is provided with seal spool conical surface 2a, seat portion is provided with valve base sealing conical surface 1a,
Band is formed when seal spool conical surface 2a is different from the cone angle of valve base sealing conical surface 1a, the two reclines.Spool 2 offers axial direction
Through hole, the axial pass-through holes are communicated with fluid outlet 12, and the valve body is separated into and fluid inlet 13 by the band
The high-pressure area communicated and the low pressure chamber communicated with fluid outlet 12.The effect of this band be make 2 rear and front end of spool by
The area of the Fluid pressure arrived is essentially equal, so that the opening force of spool 2 is not influenced by institute's flow control body pressure size.
As Fig. 1 and Fig. 2 jointly shown in, moving armature 11 is fixed on the tail portion of spool 2, and static gag bit 7 is fixed on rear valve body 4, quiet
Sheathed spring sleeve 8 in the endoporus of armature 7 is provided with return spring 9 in spring spool 8, is provided in the endoporus of electromagnetic coil 5
Magnetism-isolating loop 6, for magnetism-isolating loop 6 by being constituted every magnetic metal material, rear valve body 4, rear valve body end cap 3 and magnetism-isolating loop 6 are enclosed in electromagnetic coil 5
Surrounding.
Centre bore of the moving armature 11 through rear valve body end cap 3 stretches into the endoporus of magnetism-isolating loop 6, static gag bit 7 from the other end stretch into every
The endoporus of magnet ring 6, two end faces are opposite, and intermediate there are magnetic gap t, and an effect of magnetic gap t is to provide stroke space to spool 2,
Another effect is the channel of fluid, this effect can also be mentioned in the following description.
The tail portion of spool 2 abuts against return spring 9 by spring base 10, and spring base 10 offers throttle orifice 101, throttle orifice
Low pressure chamber is separated into ante-chamber A and back cavity B by 101, and throttle orifice 101 is different from general through flow hole, and effect is the stream to flowing through
Body generates throttling action, in the moment that valve opens and closes, keeps the Fluid pressure of ante-chamber A and back cavity B different, on spool
Pressure difference is generated, the opening and closing of valve are accelerated.Endoporus of the moving armature 11 with the endoporus of rear valve body end cap 3 and with magnetism-isolating loop 6
Between all have annular cross ebb interval.Pressure is acted on spool 2 by fluid from front to back through ante-chamber A, and fluid is through back cavity B, magnetic gap t
And the annular crosses ebb interval and pressure is acted on to spool 2 from back to front.
The Fluid pressure of ante-chamber is set as PA, the fluid pressure of back cavity B by the operation principle of the utility model for convenience of description
Power is set as PB, and the Fluid pressure of high-pressure area is set as P1.
Valve off-position, spool 2 are closed, at this moment under 9 force effect of return spring：PA=PB, P1>PA, P1
>The area of PB, the Fluid pressure being subject to due to 2 rear and front end of spool are essentially equal, and the resultant force for the Fluid pressure that spool is subject to is
0。
Valve is given to be powered, under electromagnetic force, spool 2 moves backward, and in the moment that spool 2 is opened, fluid is from higher-pressure region
Domain is ejected into ante-chamber A, the PA pressure rise of low pressure chamber, and due to the effect of throttle orifice 101, at this moment, the pressure PB variations of back cavity B are not
Greatly, PA>PB, the front end Fluid pressure that spool 2 is subject to are more than the Fluid pressure that is subject to of rear end, in being total to for Fluid pressure and electromagnetic force
Under same-action, pushes spool 2 quickly to move backward, opening speed is made to greatly increase.After valve is opened completely, Fluid pressure passes through section
Discharge orifice 101 is transmitted to back cavity B from ante-chamber A, at this moment：PA=PB.
Valve power-off is given, under spring force, the extreme direction setting in motion forward of spool 2, in the moment of movement, ante-chamber A
Pressure PA begin to decline, due to the effect of throttle orifice 101, the pressure PB variations of back cavity B are little, at this moment, PA<PB, spool 2 by
The pressure of the rear end fluid arrived is more than front end, under Fluid pressure and the collective effect of spring force, spool quick closedown.Valve is complete
After closing, ante-chamber A and back cavity B pressure balances, PA=PB.
Embodiment 2
As shown in figure 4, the present embodiment and 1 structure of embodiment are essentially identical, the difference is that the sealing of spool and valve seat
Structure.In the present embodiment, as shown in figure 5, the angle of valve base sealing conical surface 1a abuts against seal spool conical surface 2a, and in Fig. 3, it is
The angle of seal spool conical surface 2a abuts against valve base sealing conical surface 1a.The structure of the present embodiment is usually designed to the valve of normally open,
The structure of embodiment 2 is usually designed to the valve of normally off.
The utility model is not limited to the above embodiment, all design, principle, structure and methods based on the utility model
Made various improvement, fall within the scope of protection of the utility model.
Claims (3)
1. a kind of high-speed electromagnetic valve, including：
Valve body, the valve body include front valve shell and rear valve body, and the rear valve body is connected with rear valve body end cap, the rear valve body end cap
It is fixedly connected with the front valve shell；The front valve shell offers fluid inlet and fluid outlet, and valve is provided in the front valve shell
Portions and spool mounting hole；
Spool, the spool are slidably matched with the spool mounting hole, and the head of the spool is provided with the seal spool conical surface, institute
It states seat portion and is provided with the valve base sealing conical surface, the seal spool conical surface is different from the cone angle of the valve base sealing conical surface, the two reclines
When form band, the spool offers axial pass-through holes, and the axial pass-through holes are communicated with the fluid outlet, described close
The low pressure chamber that the valve body is separated into the high-pressure area communicated with the fluid inlet and is communicated with the fluid outlet by envelope band；
Moving armature, static gag bit and electromagnetic coil, the moving armature are fixed on the tail portion of the spool, and the static gag bit is fixed on institute
State rear valve body, sheathed spring sleeve in the endoporus of the static gag bit is provided with return spring, the electromagnetism in the spring spool
Magnetism-isolating loop is provided in the endoporus of coil, the rear valve body, the rear valve body end cap and the magnetism-isolating loop are enclosed in the electromagnetism
The surrounding of coil；Centre bore of the moving armature through the rear valve body end cap stretches into the endoporus of the magnetism-isolating loop, the static gag bit
The endoporus of the magnetism-isolating loop is stretched into from the other end, two end faces are opposite, and intermediate there are magnetic gap, the moving armature and the rear valve bodies
The endoporus of end cap and all had between the magnetism-isolating loop endoporus annular cross ebb interval；It is characterized in that,
The tail portion of the spool abuts against the return spring by spring base, and the spring base offers throttle orifice, the section
The low pressure chamber is separated into ante-chamber and back cavity by discharge orifice, and pressure is acted on spool by the fluid from front to back through the ante-chamber,
The fluid crosses ebb interval through the back cavity, the magnetic gap and the annular and pressure is acted on to the spool from back to front.
2. high-speed electromagnetic valve as described in claim 1, which is characterized in that set between the guide surface of the spool and the valve body
It is equipped with shaft sealer.
3. high-speed electromagnetic valve as claimed in claim 2, which is characterized in that the shaft sealer is sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820315159.6U CN207921445U (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820315159.6U CN207921445U (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207921445U true CN207921445U (en) | 2018-09-28 |
Family
ID=63597547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820315159.6U Active CN207921445U (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207921445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167506A (en) * | 2018-03-07 | 2018-06-15 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
-
2018
- 2018-03-07 CN CN201820315159.6U patent/CN207921445U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167506A (en) * | 2018-03-07 | 2018-06-15 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
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