CN210770417U - Two-position three-way electromagnetic directional valve - Google Patents
Two-position three-way electromagnetic directional valve Download PDFInfo
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- CN210770417U CN210770417U CN201921930100.9U CN201921930100U CN210770417U CN 210770417 U CN210770417 U CN 210770417U CN 201921930100 U CN201921930100 U CN 201921930100U CN 210770417 U CN210770417 U CN 210770417U
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- valve seat
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- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 239000000306 component Substances 0.000 claims abstract 7
- 239000008358 core component Substances 0.000 claims abstract 4
- 239000012530 fluid Substances 0.000 claims description 16
- 230000005389 magnetism Effects 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims 2
- 238000003754 machining Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 239000010721 machine oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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 ball body is attached to and sealed with the conical surface of the valve seat, and a medium working opening on the valve seat is communicated with a medium return opening of the valve sleeve; when the electromagnetic coil is electrified, 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, the medium working opening on the valve seat is communicated with the medium inlet opening, and the change of the medium direction is achieved. 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 inlet 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 backflow 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 push rod penetrates through the fixed 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 alternatively; the return spring is abutted between the ball body and the outer end part of the valve sleeve.
The push rod comprises a push rod I section and a push rod II section which are coaxially arranged and fixedly connected, the push rod I section is a non-magnetic section, the position of the push rod I section corresponds to that of the electromagnetic coil, and the push rod II section abuts against the sphere.
The periphery of the push rod is provided with a push rod plane, a fluid channel is arranged inside the section I of the push rod, and the push rod plane and the fluid channel communicate the medium inlet and fluid cavities at two ends of the movable armature.
The fluid channel comprises an axial flow channel arranged along the axial direction of the push rod I section, and a radial flow channel arranged along the radial direction of the push rod I section and communicated with the axial flow channel.
The section I of the push rod is connected with the section II of the push rod through a stud; or the section I of the push rod is directly in threaded connection with the section II of the push rod; or the section I of the push rod is directly connected with the section II of the push rod in an interference manner.
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, a limiting plug is arranged at the end part of the magnetizer I, and the movable armature is close to the limiting plug.
The limiting plug is provided with a spring cavity, an auxiliary spring is arranged in the spring cavity, one end of the auxiliary spring abuts against the end part of the first end of the push rod, and the elastic force of the auxiliary spring is smaller than that of the return spring.
And the outer part of the limiting plug is sleeved with a compression nut, and the compression nut is connected with the external thread on the magnetizer I.
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 electromagnetic coil is applied to a loop, when the electromagnetic coil is powered off, the ball body is attached and sealed with the conical surface of the valve seat under the elastic force action of the return spring, and a medium working port on the valve seat is communicated with a medium return port of the valve sleeve; when the electromagnetic coil is electrified, the movable armature drives the push rod to overcome the elasticity of the return spring and move towards the fixed armature, 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, the medium working port on the valve seat is communicated with the medium inlet port, and 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;
FIG. 2 is a schematic view of the putter of FIG. 1;
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; 210-putter plane; 211-push rod I section; 2111-a fluid channel; 212-a stud; 213-push rod II section; 22-sphere; 23-a return spring; 24-an auxiliary spring; 31-an electromagnetic coil; 32-a static armature; 33-a moving armature; 34-a limiting plug; 35-a compression 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 inlet port a and a medium working port P which are communicated with the valve cavity, a valve seat conical surface 111 is arranged inside the valve seat 11, a valve sleeve conical surface 121 is arranged at an inner port of the valve sleeve 12, and an outer port of the valve sleeve 12 is a medium return port B. 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 push rod 21 passes through the static armature 32, 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; the return spring 23 bears between the ball 22 and the outer end of the valve housing 12.
Wherein, the push rod 21 is an assembly structure, and the push rod 21 comprises a push rod I section 211 and a push rod II section 213 which are coaxially arranged and fixedly connected. The section I211 of the push rod is made of non-magnetic material, for example, non-magnetic stainless steel, and the position of the section I211 of the push rod corresponds to that of the electromagnetic coil 31, so as to prevent magnetic short circuit. The push rod II section 213 bears against the ball 22.
Wherein, the periphery of the push rod 21 is provided with a plurality of push rod planes 210, and the push rod planes 210 can be formed by milling. The interior of the push rod I section 211 is provided with a fluid passage 2111, and specifically, the fluid passage 211 includes an axial flow passage provided in the axial direction of the push rod I section 211, and a radial flow passage provided in the radial direction of the push rod I section 211 and communicating with the axial flow passage. The push rod plane 210 and the fluid channel 2111 communicate the medium inlet A and fluid cavities at two 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.
In this embodiment, the first section 211 of the push rod is connected to the second section 213 of the push rod through a stud 212. Obviously, without being limited thereto, the push rod I section 211 and the push rod II section 213 may also be directly screwed; alternatively, the push rod I section 211 is in direct interference connection with the push rod II section 213.
In order to limit the axial displacement of the brake armature 33, a limiting plug 34 is arranged at the end of the magnetizer I101, a compression nut 35 is sleeved outside the limiting plug 34, the compression nut 35 is connected with the external thread on the magnetizer I101, and the movable armature 33 is close to the limiting plug 34. Wherein, spacing end cap 34 is provided with the spring chamber, auxiliary spring 24 sets up in the spring chamber, and auxiliary spring 24's one end top is leaned on in the tip of push rod I section 211, and auxiliary spring 24's elasticity is less than return spring 23's elasticity far away.
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, the sphere 22 is attached and sealed with the conical surface 111 of the valve seat under the elastic action of the return spring 23, and the medium working port P on the valve seat 11 is communicated with the medium return port B of the valve sleeve 12; when the electromagnetic coil 31 is electrified, the movable armature 33 drives the push rod 21 to move towards the static armature 32 against the elastic force of the return spring 23, the push rod 21 pushes the ball 22 to enable the ball 22 to be attached and sealed with the valve sleeve conical surface 121, and the medium working port P on the valve seat 11 is communicated with the medium inlet port a, 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, and medium inlet port A can exchange with medium backward flow mouth B, promptly: the medium inlet port a serves as a medium return port, and the medium return port B serves as a medium inlet port, which is not limited herein.
The above is an example of the preferred embodiment of the present invention, and the parts not described in detail are known to those skilled in the art, and the protection scope of the present invention is subject to the content of the claims, and any equivalent changes based on the technical teaching of the present invention are within the protection scope of the present invention.
Claims (8)
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 inlet 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 backflow 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 push rod penetrates through the fixed 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 alternatively; the return spring is abutted between the ball body and the outer end part of the valve sleeve.
2. The two-position three-way electromagnetic directional valve as claimed in claim 1, wherein the push rod comprises a push rod I section and a push rod II section which are coaxially arranged and fixedly connected, the push rod I section is a non-magnetic section, the position of the push rod I section corresponds to that of the electromagnetic coil, and the push rod II section abuts against the ball body.
3. The two-position three-way electromagnetic directional valve as claimed in claim 2, wherein the push rod is provided with a push rod plane at the periphery, a fluid channel is arranged inside the section I of the push rod, and the push rod plane and the fluid channel communicate the medium inlet and the fluid cavities at two ends of the movable armature.
4. The two-position, three-way electromagnetic directional valve according to claim 3, characterized in that the fluid passage comprises an axial flow passage disposed along an axial direction of the push rod I section, and a radial flow passage disposed along a radial direction of the push rod I section and communicating with the axial flow passage.
5. The two-position three-way electromagnetic directional valve according to claim 2, wherein the section I of the push rod is connected with the section II of the push rod through a stud; or the section I of the push rod is directly in threaded connection with the section II of the push rod; or the section I of the push rod is directly connected with the section II of the push rod in an interference manner.
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, a limit plug is arranged at the end part of the magnetizer I, and the movable armature is close to the limit plug.
7. The two-position three-way electromagnetic directional valve as claimed in claim 6, wherein the limiting plug is provided with a spring cavity, an auxiliary spring is arranged in the spring cavity, one end of the auxiliary spring abuts against the first end portion of the push rod, and the elastic force of the auxiliary spring is smaller than that of the return spring.
8. The two-position three-way electromagnetic directional valve as claimed in claim 6, characterized in that the outer sleeve of the limiting choke plug is provided with a gland nut, and the gland nut is connected with the external thread on the magnetizer I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930100.9U CN210770417U (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 |
|---|---|---|---|
| CN201921930100.9U CN210770417U (en) | 2019-11-08 | 2019-11-08 | Two-position three-way electromagnetic directional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770417U true CN210770417U (en) | 2020-06-16 |
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ID=71060752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921930100.9U Active CN210770417U (en) | 2019-11-08 | 2019-11-08 | Two-position three-way electromagnetic directional valve |
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| Country | Link |
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| CN (1) | CN210770417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700897A (en) * | 2021-09-03 | 2021-11-26 | 中车株洲电力机车有限公司 | Valve for gas-liquid control of rail vehicle and control method |
-
2019
- 2019-11-08 CN CN201921930100.9U patent/CN210770417U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700897A (en) * | 2021-09-03 | 2021-11-26 | 中车株洲电力机车有限公司 | Valve for gas-liquid control of rail vehicle and control method |
| CN113700897B (en) * | 2021-09-03 | 2023-11-07 | 中车株洲电力机车有限公司 | Valve for controlling gas and liquid of railway vehicle and control method |
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