CN221424569U - Hydraulic electromagnetic proportional control valve - Google Patents
Hydraulic electromagnetic proportional control valve Download PDFInfo
- Publication number
- CN221424569U CN221424569U CN202323053035.5U CN202323053035U CN221424569U CN 221424569 U CN221424569 U CN 221424569U CN 202323053035 U CN202323053035 U CN 202323053035U CN 221424569 U CN221424569 U CN 221424569U
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- valve
- proportional control
- core
- control valve
- electromagnetic proportional
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 48
- 230000005389 magnetism Effects 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 24
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a hydraulic electromagnetic proportional control valve, which comprises an electromagnetic coil part, wherein the electromagnetic coil part comprises a shell, a coil group is arranged in the shell, a magnetism isolating cover is arranged in the coil group, a movable iron core and a front yoke iron are arranged in the magnetism isolating cover to form a closed magnetic circuit, one end of the front yoke iron, which is close to the movable iron core, is of a conical surface structure, and the movable iron core axially displaces along with electromagnetic force generated by electrifying the coil group; and the valve body is fixedly connected with the electromagnetic coil part and comprises a valve sleeve, an oil hole is formed in the side wall of the valve sleeve, a valve core with an outer circular surface is arranged in the valve sleeve, one end of the valve core is sequentially connected with the front yoke iron and the movable iron core along the axial direction through a push rod, and the coil assembly is electrified to generate electromagnetic force to attract the movable iron core to axially displace and drive the valve core to move, so that the outer circular surface of the valve core is matched with the oil hole. The hydraulic electromagnetic proportional control valve is large in flow, small in pressure drop and capable of achieving accurate control.
Description
Technical Field
The utility model relates to the technical field of electromagnetic control valves, in particular to a hydraulic electromagnetic proportional control valve applied to control of a diesel engine piston cooling system.
Background
With the development of the automobile industry, the adoption of electromagnetic control valves to control the flow and pressure of hydraulic pressure so as to realize the automatic and intelligent control of the system is an increasingly popular research direction. Solenoid valves are core components that have high requirements on materials, structure, process, etc.
The utility model of China patent CN204042396U discloses an electromagnetic control valve for an automobile engine, which comprises a valve body and an electromagnetic coil part connected with the valve body, wherein the valve body consists of a valve sleeve, a spring, a valve core and a push rod, the end part of the valve sleeve is provided with an oil inlet, the spring, the valve core and the push rod are sequentially arranged in the valve sleeve through the oil inlet, the valve core and the push rod are integrally formed, the side wall of the valve sleeve is provided with an oil outlet and an oil return port, and the outer side of the valve core is provided with a bulge which is matched with the oil outlet and extends outwards in a radial direction. The electromagnetic coil part mainly comprises a shell, a coil arranged on the inner side of the shell, a tubular yoke arranged on the inner peripheral side of the coil and used for forming a magnetic circuit, and a plunger arranged on the inner side of the yoke. However, the patent still does not solve the problems of small flow and large pressure drop of the electromagnetic valve applied to engine piston cooling control, but only acts as switch control, cannot realize precise control, and is difficult to apply to a diesel engine.
Disclosure of utility model
The utility model aims to solve the technical problem of how to realize a hydraulic electromagnetic proportional control valve with large flow, small pressure drop and precise control.
In order to solve the technical problem, the utility model provides a hydraulic electromagnetic proportional control valve, which is applied to a diesel engine piston cooling system and comprises:
The electromagnetic coil part comprises a shell, a coil group is arranged in the shell, a plug connector integrally injection-molded with the coil group is outwards protruded from the shell, a magnetism isolating cover is arranged in the coil group, a movable iron core and a front yoke iron are arranged in the magnetism isolating cover to form a closed magnetic circuit, one end of the front yoke iron, which is close to the movable iron core, is of a conical surface structure, and the movable iron core axially displaces along with electromagnetic force generated by electrifying the coil group; and
The valve body fixedly connected with the electromagnetic coil part comprises a valve sleeve, an oil hole is formed in the side wall of the valve sleeve, a valve core with an outer circular surface is arranged in the valve sleeve, one end of the valve core is sequentially connected with the front yoke iron and the movable iron core along the axial direction through a push rod, and the coil assembly is electrified to generate electromagnetic force to attract the movable iron core to axially displace and drive the valve core to move, so that the outer circular surface of the valve core is matched with the oil hole.
Further, a support is arranged at the joint of the electromagnetic coil part and the valve body, the support is formed by stamping, and the front yoke and the support are assembled through interference fit to form an integrated magnetic conduction.
Further, the support is provided with two protruding parts along the radial outer side of the shell, and positioning holes are respectively formed in the two protruding parts.
Further, a gap is reserved at the bottom of the movable iron core, which is opposite to the magnetism isolating cover, when the movable iron core is at the initial position.
Furthermore, one end of the valve core is sleeved with a compression spring, the compression spring is of a tower-shaped structure, and the large caliber of the compression spring is close to the tail end of the valve sleeve.
Further, a first annular groove is formed in the outer peripheral side wall close to one end of the front yoke conical surface structure, and a first sealing ring which is in contact with the inner side wall of the magnetism isolating cover is arranged in the first annular groove.
Further, a second annular groove is formed in the outer peripheral side wall, close to the assembling end of the front yoke and the support, and a second sealing ring in contact with the inner side wall of the valve sleeve is arranged in the second annular groove.
Further, the oil holes are provided with 3U-shaped hole structures, so that the maximum oil passing area is realized.
Further, an oil inlet is formed in the end portion, away from the electromagnetic coil portion, of the valve sleeve.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model realizes electromagnetic force stabilization in the process of electromagnetic valve travel by adopting the front yoke iron with the conical surface structure, satisfies continuous proportional control of output flow, and solves the problem of small flow in the existing electromagnetic valve by adopting the compression spring which is designed into a tower-shaped structure to reduce pressure drop and realizing the maximum oil passing area of the oil passing holes with 3U-shaped hole structures.
Drawings
FIG. 1 is an isometric view of the present utility model;
FIG. 2 is a front view of the present utility model;
Fig. 3 is a cross-sectional view of the present utility model.
In the figure: 10. an electromagnetic coil section; 11. a housing, 12, a coil assembly; 13. a plug; 14. a magnetism isolating cover; 15. a movable iron core; 16. a front yoke; 17. a first seal ring; 18. a second seal ring; 19. a bracket; 190. positioning holes; 20. a valve body; 21. a valve sleeve; 210. oil holes; 22. a valve core; 23. a push rod; 24. a compression spring; 25. and an oil inlet.
Detailed Description
In order to make the technical solutions and technical effects of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments.
As shown in fig. 1 to 3, the present utility model aims to provide a hydraulic electromagnetic proportional control valve with large flow, small pressure drop and precise control, which comprises a solenoid portion 10 and a valve body 20 fixedly connected with the solenoid portion 10.
The electromagnetic coil part 10 specifically includes a housing 11, a coil assembly 12 is disposed in the housing 11, and a plug 13 integrally injection-molded with the coil assembly 12 is disposed outside the housing 11. A magnetism isolating cover 14 is arranged in the coil group 12, and a movable iron core 15 and a front yoke 16 are sequentially arranged in the magnetism isolating cover 14 in the axial direction to form a closed magnetic circuit. The front yoke 16 is a conical surface structure near one end of the movable iron core 15, and reaches magnetic field saturation through the conical surface structure to limit the magnetic flux, so that the magnetic flux of the movable iron core is as stable as possible in the movable stroke range, the electromagnetic force is stable in the electromagnetic valve stroke process, and the output flow can be controlled in a continuous proportion. The front yoke 16 is provided with a magnetism isolating spacer on the end face opposite to the movable iron core 15. The movable iron core 15 is axially displaced by electromagnetic force generated by energizing the coil assembly 12, and when the coil assembly 12 is deenergized, the movable iron core 15 returns to the original position. In order to solve the problem that the magnetic shield 14 is damaged by repeatedly striking the movable iron core 15 during large magnetic force operation, a gap is left at the bottom of the movable iron core 15 opposite to the magnetic shield 14 in the initial installation position. A first annular groove is formed in the outer peripheral side wall close to one end of the conical surface structure of the front yoke 16, and a first sealing ring 17 which is in contact with the inner side wall of the magnetism isolating cover 14 is arranged in the first annular groove. A second annular groove is formed in the peripheral side wall near the end, where the front yoke 16 is assembled with the bracket 19, and a second sealing ring 18 in contact with the inner side wall of the valve sleeve 21 is arranged in the second annular groove.
The electromagnetic coil part 10 is provided with a bracket 19 at the joint with the valve body 20, the bracket 19 is formed by stamping, and the front yoke 16 and the bracket 19 are assembled by interference fit to form an integral magnetic conduction. Wherein, the bracket 19 has two protruding parts along the radial outer side of the housing 11, and the two protruding parts are respectively provided with a positioning hole 190 to improve the installation strength.
The valve body 20 comprises a valve sleeve 21, an oil through hole 210 is formed in the side wall of the valve sleeve 21, and an oil inlet 25 is formed in the end portion, away from the electromagnetic coil portion 10, of the valve sleeve 21. The utility model relates to a high-performance electromagnetic valve applied to a diesel engine piston cooling system, wherein a control medium is various lubricating oils, and the electromagnetic valve is used for feeding oil from the end face of a valve sleeve 21 and discharging oil from the side face. Preferably, the oil passing hole 210 includes 3U-shaped holes at the same circumference of the side wall of the valve housing 21 to achieve the maximum oil passing area, i.e., to achieve a high flow rate of the electromagnetic hydraulic control valve. A valve core 22 with an outer circular surface is arranged in the valve sleeve 21, and one end of the valve core 22 is sequentially connected with the front yoke 16 and the movable iron core 15 along the axial direction through a push rod 23. The electromagnetic proportional control valve is controlled by PWM signals, electromagnetic force is generated through the energization of the coil assembly 12 to attract the moving iron core 15 to axially displace and drive the valve core 22 to move, and the outer circular surface of the valve core 22 is matched with the oil through hole 210, so that the communication and the closing of an oil way are realized. The valve core 22 is sleeved with a compression spring 24, preferably, the compression spring 24 is of a tower-shaped structure, and the large caliber of the compression spring 24 is close to the tail end of the valve sleeve (21). The design of the compression spring 24 in the tower-shaped structure is beneficial to reducing the pressure drop in the operation of the electromagnetic hydraulic control valve, specifically: by adopting the tower-shaped structure, the outer diameter of the lower end of the compression spring 24 is large, the installation supporting surface is large, the inner diameter of the oil inlet 25 can be increased, the oil passing area is maximized, and the pressure drop of the inlet and the outlet of the electromagnetic valve is reduced.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A hydraulic electromagnetic proportional control valve for a diesel engine piston cooling system, comprising:
The electromagnetic coil part (10), the electromagnetic coil part (10) comprises a shell (11), a coil group (12) is arranged in the shell (11), a magnetism isolating cover (14) is arranged in the coil group (12), a movable iron core (15) and a front yoke iron (16) are arranged in the magnetism isolating cover (14) to form a closed magnetic circuit, one end, close to the movable iron core (15), of the front yoke iron (16) is of a conical surface structure, and the movable iron core (15) axially displaces along with electromagnetic force generated by electrifying the coil group (12); and
The electromagnetic valve comprises a valve body (20) fixedly connected with an electromagnetic coil part (10), wherein the valve body (20) comprises a valve sleeve (21), an oil through hole (210) is formed in the side wall of the valve sleeve (21), a valve core (22) with an outer circular surface is arranged in the valve sleeve (21), one end of the valve core (22) is sequentially connected with a front yoke (16) and a movable iron core (15) along the axial direction through a push rod (23), and the coil assembly (12) is electrified to generate electromagnetic force to attract the movable iron core (15) to axially displace and drive the valve core (22) to move, so that the outer circular surface of the valve core (22) is matched with the oil through hole (210).
2. Hydraulic electromagnetic proportional control valve according to claim 1, characterized in that the housing (11) is externally provided with an injection-molded plug (13) integral with the coil assembly (12).
3. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that a bracket (19) is arranged at the joint of the electromagnetic coil part (10) and the valve body (20), the bracket (19) is formed by stamping, and the front yoke (16) and the bracket (19) are assembled through interference fit to form an integral magnetic conduction.
4. A hydraulic electromagnetic proportional control valve according to claim 3, characterized in that the bracket (19) has two protruding parts along the radial outer side of the housing (11), and the two protruding parts are respectively provided with a positioning hole (190).
5. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that the movable core (15) leaves a gap at the bottom opposite to the magnetism isolating cover (14) in the initial position.
6. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that one end of the valve core (22) is sleeved with a compression spring (24), the compression spring (24) is of a tower-shaped structure, and the large caliber of the compression spring (24) is close to the tail end of the valve sleeve (21).
7. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that a first annular groove is provided near the outer peripheral side wall of one end of the conical surface structure of the front yoke (16), and a first sealing ring (17) contacting with the inner side wall of the magnetism isolating cover (14) is provided in the first annular groove.
8. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that a second annular groove is provided near the outer peripheral side wall of the end of the front yoke (16) assembled with the bracket (19), and a second sealing ring (18) contacting the inner side wall of the valve sleeve (21) is provided in the second annular groove.
9. The hydraulic electromagnetic proportional control valve according to claim 1, characterized in that the oil passage hole (210) includes 3U-shaped holes at the same circumference of the side wall of the valve housing (21) to achieve a maximum oil passage area.
10. Hydraulic electromagnetic proportional control valve according to any of claims 1-9, characterized in that the end of the valve sleeve (21) remote from the solenoid portion (10) is provided with an oil inlet (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323053035.5U CN221424569U (en) | 2023-11-09 | 2023-11-09 | Hydraulic electromagnetic proportional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323053035.5U CN221424569U (en) | 2023-11-09 | 2023-11-09 | Hydraulic electromagnetic proportional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221424569U true CN221424569U (en) | 2024-07-26 |
Family
ID=92009485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323053035.5U Active CN221424569U (en) | 2023-11-09 | 2023-11-09 | Hydraulic electromagnetic proportional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221424569U (en) |
-
2023
- 2023-11-09 CN CN202323053035.5U patent/CN221424569U/en active Active
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