CN210770418U - Two-position three-way electromagnetic directional valve - Google Patents
Two-position three-way electromagnetic directional valve Download PDFInfo
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- CN210770418U CN210770418U CN201921930203.5U CN201921930203U CN210770418U CN 210770418 U CN210770418 U CN 210770418U CN 201921930203 U CN201921930203 U CN 201921930203U CN 210770418 U CN210770418 U CN 210770418U
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- valve
- push rod
- armature
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- valve seat
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- 230000003068 static effect Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000000306 component Substances 0.000 claims abstract 7
- 239000008358 core component Substances 0.000 claims abstract 4
- 239000012530 fluid Substances 0.000 claims description 15
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000010721 machine oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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Abstract
The utility model discloses a two-position three-way electromagnetic directional valve, which comprises a valve body component, a valve core component and an electromagnetic component, wherein the valve body component comprises a valve body, a valve seat and a valve sleeve, the electromagnetic component comprises an electromagnetic coil, a static armature and a dynamic armature, and the valve core component comprises a push rod, a ball body and a return spring; after the electromagnetic coil is applied to a loop, when the electromagnetic coil is powered off, the push rod pushes the ball body to enable the ball body to be attached and sealed with the conical surface of the valve sleeve, and the medium working port is communicated with the medium return port; when the electromagnetic coil is electrified, the movable armature drives the push rod to move by overcoming the elasticity of the return spring, the ball body is attached and sealed with the conical surface of the valve seat, the medium working opening is communicated with the medium inlet, and the change of the medium direction is realized. Compared with the cylindrical sliding valve pair gap sealing mode, the utility model adopts the conical surface sealing between the ball body and the conical surface, the medium is not easy to leak, the sealing pressure can be kept, and the sealing is reliable; and the structure is simple, and the requirement on machining precision is reduced.
Description
Technical Field
The utility model relates to a valve class component technical field, concretely relates to two tee bend solenoid directional valves.
Background
The directional valve is the main element in the directional control loop. The electromagnetic reversing valve is a reversing valve which is most widely applied because the electromagnetic reversing valve is limited by the size and the thrust of the electromagnet and is generally used for controlling small-flow fluid. The two-position three-way electromagnetic directional valve in the prior art generally adopts a cylindrical slide valve, and the slide valve pair is sealed by a gap, so that leakage is easy to occur, the sealing is unreliable, the structure is complex, and the requirement on processing precision is high.
The invention patent application with the application number of 201911000047.7 and the name of a compression release type engine cylinder braking device and the invention patent application with the application number of 201911000731.5 and the name of an oil pressurization type compression release type engine cylinder braking device of the same applicant all need to apply a two-position three-way electromagnetic directional valve. Practical situation shows that when the two-position three-way electromagnetic reversing valve with the existing structure is adopted, the defects of leakage and unreliable sealing exist, and therefore the two-position three-way electromagnetic reversing valve which is reliable in sealing and difficult to leak needs to be researched and developed urgently.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is: the two-position three-way electromagnetic directional valve is reliable in sealing and simple in structure.
In order to solve the technical problem, the technical scheme of the utility model is that: the two-position three-way electromagnetic directional valve comprises a valve body assembly, a valve core assembly arranged in a valve cavity of the valve body assembly, and an electromagnetic assembly driving the valve core assembly to move,
the valve body assembly includes: a valve body, a valve seat and a valve sleeve; one end of the valve seat is fixedly connected with the valve body, the other end of the valve seat is internally and fixedly provided with the valve sleeve, the valve seat is provided with a medium backflow port and a medium working port which are communicated with the valve cavity, a valve seat conical surface is arranged in the valve seat, an inner port of the valve sleeve is provided with a valve sleeve conical surface, and an outer port of the valve sleeve is a medium inlet port;
the electromagnetic assembly includes: the electromagnetic coil is sleeved outside the valve body, the static armature is fixedly arranged in the valve cavity, and the movable armature is axially and slidably arranged in the valve cavity and close to the static armature;
the spool assembly includes: the first end of the push rod is fixed with the movable armature, the second end of the push rod abuts against the ball, the ball is arranged in the valve seat, and the ball and the conical surface of the valve seat or the conical surface of the valve sleeve form sealing by one of the ball and the valve seat; and the first end of the return spring is abutted against the end part of the first end of the push rod.
And a fluid channel is arranged in the push rod and communicates the medium return port with fluid cavities at two ends of the movable armature.
Wherein the fluid passage includes an axial flow passage provided in an axial direction of the push rod, and a radial flow passage provided in a radial direction of the push rod and communicating with the axial flow passage.
The inner cavity of the static armature is provided with an air bleed plug and a return spring, the second end of the return spring abuts against the air bleed plug, the outer end of the static armature is provided with an air bleed through hole communicated with the inner cavity of the static armature, and the air bleed plug is hermetically arranged in the air bleed through hole.
The inner cavity of the valve sleeve is provided with an auxiliary spring, one end of the auxiliary spring abuts against the ball body, the other end of the auxiliary spring abuts against the outer port of the valve sleeve, and the elastic force of the auxiliary spring is smaller than that of the return spring.
The valve body comprises a magnetizer I, a magnetism isolating ring and a magnetizer II which are sequentially arranged and fixedly connected, one end of the valve seat is fixedly connected with the magnetizer II, the outer end part of the static armature is provided with an external thread, and the magnetizer I is provided with an internal thread connected with the external thread of the static armature.
And the end part of the external thread of the static armature is in threaded connection with a locking nut.
After the technical scheme is adopted, the beneficial effects of the utility model are as follows:
the two-position three-way electromagnetic directional valve comprises a valve body assembly, a valve core assembly and an electromagnetic assembly, wherein the valve body assembly comprises a valve body, a valve seat and a valve sleeve, the electromagnetic assembly comprises an electromagnetic coil, a static armature and a movable armature, and the valve core assembly comprises a push rod, a ball body and a return spring; after the valve is applied to a loop, when the electromagnetic coil is powered off, under the elastic force action of the return spring, the push rod pushes the ball body to enable the ball body to be attached and sealed with the conical surface of the valve sleeve, and a medium working port on the valve seat is communicated with a medium return port; when the electromagnetic coil is electrified, the movable armature drives the push rod to move towards the fixed armature against the elasticity of the return spring, the ball body is attached and sealed with the conical surface of the valve seat in the process of moving towards the push rod under the action of medium pressure, and the medium working port is communicated with the medium inlet port of the valve sleeve, so that the change of the medium direction is realized. Compared with the cylindrical sliding valve pair gap sealing mode in the prior art, the utility model adopts the conical surface sealing between the ball body and the conical surface, the medium is not easy to leak, the sealing pressure can be kept, and the sealing is reliable; and the structure is simple, and the requirement on machining precision is reduced.
Drawings
Fig. 1 is a schematic structural sectional view of an embodiment of the present invention;
in the figure: 10-a valve body; 101-magnetizer I; 102-magnetism isolating ring; 103-magnetizer II; 11-a valve seat; 111-seat taper; 12-a valve housing; 121-valve sleeve conical surface; 21-a push rod; 211-a fluid channel; 22-sphere; 23-a return spring; 24-an auxiliary spring; 31-an electromagnetic coil; 32-a static armature; 321-a vent through hole; 33-a moving armature; 34-deflation and blockage; 35-a lock nut; p-media working port; a-a media inlet port; b-medium reflux port.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
It should be noted that, herein, the center near the valve is defined as "inner", and the center far from the valve is defined as "outer"; the ordinal terms "first," "second," etc., are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," and the like are to be construed broadly and may, for example, be mechanical or electrical connections between elements; the elements may be directly connected or indirectly connected through an intermediate, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
As shown in fig. 1, the utility model discloses two tee bend solenoid directional valves of embodiment include: the valve comprises a valve body assembly, a valve core assembly arranged in a valve cavity of the valve body assembly and an electromagnetic assembly driving the valve core assembly to move.
Wherein, the valve body subassembly includes: a valve body 10, a valve seat 11 and a valve sleeve 12; one end of the valve seat 11 is fixedly connected with the valve body 10, the valve sleeve 12 is fixedly arranged inside the other end of the valve seat 11, the valve seat 11 is provided with a medium working port P and a medium return port B which are communicated with the valve cavity, a valve seat conical surface 111 is arranged inside the valve seat 11, an inner port of the valve sleeve 12 is provided with a valve sleeve conical surface 121, and an outer port of the valve sleeve 12 is a medium inlet port a. Further, the valve body 10 is an assembly structure, the valve body 10 includes a magnetizer I101, a magnetism isolating ring 102, and a magnetizer II103, which are sequentially disposed and fixedly connected, and one end of the valve seat 11 extends into the magnetizer II103 and is fixedly connected with the magnetizer II 103.
Wherein, the electromagnetism subassembly includes: the electromagnetic valve comprises an electromagnetic coil 31, a static armature 32 and a movable armature 33, wherein the electromagnetic coil 31 is sleeved outside the valve body 10, the static armature 32 is fixedly arranged in a valve cavity, and the movable armature 33 is axially and slidably arranged in the valve cavity and close to the static armature 32.
Wherein, case subassembly includes: a push rod 21, a ball 22, a return spring 23, and a further auxiliary spring 24. The first end of the push rod 21 is fixed with the movable armature 33, the second end of the push rod 21 abuts against the ball 22, the ball 22 is arranged in the valve seat 11, and the ball 22 forms a seal with the valve seat conical surface 111 or the valve sleeve conical surface 121; a first end of the return spring 23 abuts against a first end portion of the push rod 21. Wherein, the auxiliary spring 24 is arranged in the inner cavity of the valve housing 12, one end of the auxiliary spring 24 abuts against the ball 22, the other end of the auxiliary spring 24 abuts against the outer port of the valve housing 12, and the elastic force of the auxiliary spring 24 is far less than that of the return spring 23.
Wherein the push rod 21 is internally provided with a fluid passage 211. Specifically, the fluid passage 211 includes an axial flow passage provided in the axial direction of the push rod 21, and a radial flow passage provided in the radial direction of the push rod 21 and communicating with the axial flow passage. The fluid channel 211 communicates the medium return port B with fluid chambers at both ends of the movable armature 33; on one hand, the pressure balance function is realized, so that the resultant force of the fluid pressure to the valve core/the movable armature is zero, and the movement is convenient; the other function is that: because the movable armature 33 is in continuous motion, the sizes of the cavities at the two ends of the movable armature are continuously changed, the fluid cavities at the two ends are communicated, and the phenomena of air holding and air blowing cannot be generated.
The inner cavity of the static armature 32 is provided with a gas discharge plug 34 and the return spring 23, the second end of the return spring 23 abuts against the gas discharge plug 34, the outer end of the static armature 32 is provided with a gas discharge through hole 321 communicated with the inner cavity of the static armature 32, and the gas discharge plug 34 is hermetically mounted in the gas discharge through hole 321. When an external force is applied to the air bleeding plug 34 toward the return spring 23, the air in the valve chamber can be released.
Wherein, the outer end of the static armature 32 is provided with an external thread, the magnetizer I101 is provided with an internal thread connected with the static armature 32, and the static armature 32 is fixedly connected with the magnetizer I101 through the thread. Further, a lock nut 35 is threadedly connected to an end portion of the external thread of the stationary armature 32. Thus, the axial relative position of the static armature 32 and the movable armature 33 can be adjusted, and after the adjustment, the locking nut 35 is used for locking.
After the two-position three-way electromagnetic directional valve provided by the embodiment of the utility model is applied to a loop, when the electromagnetic coil 31 is powered off, under the elastic action of the return spring 23, the push rod 21 pushes the ball 22 to make the ball 22 attach and seal with the valve sleeve conical surface 121, and the medium working port P on the valve seat 11 is communicated with the medium return port B; when the electromagnetic coil 31 is electrified, the movable armature 33 drives the push rod 21 to move towards the fixed armature 32 against the elastic force of the return spring 23, the ball 22 is attached to and sealed with the valve seat conical surface 111 in the process of moving towards the push rod 21 under the action of medium pressure and the auxiliary spring 24, and the medium working port P is communicated with the medium inlet port A of the valve sleeve, so that the change of the medium direction is realized. Compared with the cylindrical sliding valve pair gap sealing mode in the prior art, the utility model adopts the conical surface sealing between the ball body and the conical surface, the medium is not easy to leak, the sealing pressure can be kept, and the sealing is reliable; and the structure is simple, and the requirement on machining precision is reduced.
The utility model discloses two tee bend solenoid directional valves, when being applied to the invention patent application of application number 201911000047.7, name "compression release formula engine cylinder arresting gear" specifically to and the invention patent application of application number 201911000731.5, name "compression release formula engine cylinder arresting gear of machine oil pressure boost" the machine oil circuit of engine is put through to medium inlet A, and medium backward flow mouth B puts through oil return circuit (pressure release oil circuit), and rotatory oil feed interface arrangement oil circuit is put through to medium work mouth P.
Obviously, the utility model discloses a two tee bend solenoid directional valves do not limit to be applied to the oil circuit switching-over, also can be used to the gas circuit switching-over, do not do the restriction here.
The foregoing is an example of the preferred embodiment of the present invention, and those parts not described in detail are known to those skilled in the art, and the scope of the present invention is defined by the appended claims, and all equivalent changes that can be made based on the teachings of the present invention are within the scope of the present invention.
Claims (7)
1. The two-position three-way electromagnetic directional valve comprises a valve body component, a valve core component arranged in a valve cavity of the valve body component, and an electromagnetic component for driving the valve core component to move, and is characterized in that,
the valve body assembly includes: a valve body, a valve seat and a valve sleeve; one end of the valve seat is fixedly connected with the valve body, the other end of the valve seat is internally and fixedly provided with the valve sleeve, the valve seat is provided with a medium backflow port and a medium working port which are communicated with the valve cavity, a valve seat conical surface is arranged in the valve seat, an inner port of the valve sleeve is provided with a valve sleeve conical surface, and an outer port of the valve sleeve is a medium inlet port;
the electromagnetic assembly includes: the electromagnetic coil is sleeved outside the valve body, the static armature is fixedly arranged in the valve cavity, and the movable armature is axially and slidably arranged in the valve cavity and close to the static armature;
the spool assembly includes: the first end of the push rod is fixed with the movable armature, the second end of the push rod abuts against the ball, the ball is arranged in the valve seat, and the ball and the conical surface of the valve seat or the conical surface of the valve sleeve form sealing by one of the ball and the valve seat; and the first end of the return spring is abutted against the end part of the first end of the push rod.
2. The two-position three-way electromagnetic directional valve as claimed in claim 1, wherein a fluid channel is arranged inside the push rod, and the fluid channel connects the medium return port and fluid cavities at two ends of the movable armature.
3. The two-position, three-way electromagnetic directional valve of claim 2, wherein the fluid passage includes an axial flow passage disposed axially of the push rod, and a radial flow passage disposed radially of the push rod and communicating with the axial flow passage.
4. The two-position three-way electromagnetic directional valve as claimed in claim 1, wherein the inner cavity of the static armature is provided with a gas discharge plug and the return spring, the second end of the return spring abuts against the gas discharge plug, the outer end of the static armature is provided with a gas discharge through hole communicated with the inner cavity of the static armature, and the gas discharge plug is hermetically mounted in the gas discharge through hole.
5. The two-position three-way electromagnetic directional valve as claimed in claim 1, wherein the inner cavity of the valve housing is provided with an auxiliary spring, one end of the auxiliary spring abuts against the ball, the other end of the auxiliary spring abuts against the outer port of the valve housing, and the elastic force of the auxiliary spring is smaller than that of the return spring.
6. The two-position three-way electromagnetic directional valve according to claim 1, wherein the valve body comprises a magnetizer I, a magnetism isolating ring and a magnetizer II which are sequentially arranged and fixedly connected, one end of the valve seat is fixedly connected with the magnetizer II, the outer end part of the static armature is provided with an external thread, and the magnetizer I is provided with an internal thread connected with the external thread of the static armature.
7. The two-position three-way electromagnetic directional valve according to claim 6, characterized in that a lock nut is connected to the end of the external thread of the static armature in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930203.5U CN210770418U (en) | 2019-11-08 | 2019-11-08 | Two-position three-way electromagnetic directional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930203.5U CN210770418U (en) | 2019-11-08 | 2019-11-08 | Two-position three-way electromagnetic directional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770418U true CN210770418U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921930203.5U Active CN210770418U (en) | 2019-11-08 | 2019-11-08 | Two-position three-way electromagnetic directional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210770418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648429A (en) * | 2020-12-31 | 2021-04-13 | 中国航发长春控制科技有限公司 | Screw rod supporting steel ball valve sleeve combined electromagnetic valve structure |
-
2019
- 2019-11-08 CN CN201921930203.5U patent/CN210770418U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648429A (en) * | 2020-12-31 | 2021-04-13 | 中国航发长春控制科技有限公司 | Screw rod supporting steel ball valve sleeve combined electromagnetic valve structure |
| CN112648429B (en) * | 2020-12-31 | 2022-11-01 | 中国航发长春控制科技有限公司 | Screw rod supporting steel ball valve sleeve combined electromagnetic valve structure |
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