CN215110868U - Integrated proportional pressure control valve - Google Patents
Integrated proportional pressure control valve Download PDFInfo
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- CN215110868U CN215110868U CN202120312982.3U CN202120312982U CN215110868U CN 215110868 U CN215110868 U CN 215110868U CN 202120312982 U CN202120312982 U CN 202120312982U CN 215110868 U CN215110868 U CN 215110868U
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Abstract
The utility model discloses an integrated form proportional pressure control valve, which comprises a valve body, constant voltage adjusting screw, the F case, adjusting screw, the E case, the proportion electro-magnet, constant voltage adjusting screw installs in the valve body through adjusting the seat, locate the tip cover in the valve body and establish adjusting spring, adjusting spring other end cover is on adjusting the spring holder, E case tip is located to adjusting the spring holder, the E case is fixed in the valve body through the valve sleeve seat, the other end meets with the interior push rod of proportion electro-magnet, the F case is installed in the upper portion of valve body with adjusting screw, F case inner is equipped with the F case seat, the little spring of pressure differential is established to the overcoat from inside on the F case seat, the big spring of pressure differential, adjusting screw locates in the pressure differential regulation seat through the nut, adjusting screw inner is equipped with the spring pad. The utility model has the advantages of reasonable design, change the spring force of valve into the electromagnetic force, realize direct electromagnetic pressure control, need not increase electromagnetic pressure control valve in hydraulic system in addition.
Description
Technical Field
The utility model relates to a hydraulic pressure plunger pump (hydraulic pressure plunger motor) variable principle design field, in particular to integrated form proportional pressure control valve.
Background
With the development of automatic control technology, proportional control is more and more used for replacing switch control and applied to various devices. Such as BCY in the domestic pump series, EP pump in the lissajous series, germany. However, most of these pumps control the flow rate of the plunger pump through a proportional valve, the pressure control is less, and the pump is realized through the proportional valve when the proportional pressure control is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an integrated form proportional pressure control valve.
The utility model adopts the technical proposal that:
integrated proportional pressure control valve, its characterized in that: the constant-pressure adjusting device comprises a valve body, a constant-pressure adjusting screw, an F valve core, an adjusting screw, an E valve core and a proportional electromagnet, wherein the constant-pressure adjusting screw is installed in the valve body through an adjusting seat, an adjusting spring is arranged at the end part in the valve body in a sleeved mode, the other end of the adjusting spring is sleeved on an adjusting spring seat, the end part of the E valve core is arranged on the adjusting spring seat, the E valve core is fixed in the valve body through the valve sleeve seat, the other end of the E valve core is connected with a push rod in the proportional electromagnet, the F valve core and the adjusting screw are installed on the upper portion of the valve body, the lower portion of the valve body is provided with a damping switch, the inner end of the F valve core is provided with the F valve core seat, a small pressure difference spring and a large pressure difference spring are sleeved on the F valve core seat from inside to outside, the adjusting screw is arranged in the pressure difference adjusting seat through a nut, and the inner end of the adjusting screw is provided with a spring cushion.
The small differential pressure spring and the large differential pressure spring are arranged between the F valve core seat and the spring pad, and the adjusting screw rod is rotated to push the spring pad to adjust the compression amount of the small differential pressure spring and the large differential pressure spring.
The outer end of the valve body F valve core is provided with a plug, and the plug and the outer end of the valve body F valve core form a closed oil cavity.
And a sealing element is arranged between the adjusting screw and the pressure difference adjusting seat.
The utility model has the advantages that: the structure design is reasonable, the spring force of the valve is changed into electromagnetic force, direct electromagnetic pressure control is realized, and an electromagnetic pressure control valve is not required to be additionally arranged in a hydraulic system.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an oil circuit diagram of the present invention.
Wherein: 1. a constant pressure adjusting screw; 2. a constant pressure regulating seat; 3. a valve body; 4. damping; 5. a damping switch; 6. a pressure regulating spring; 7. a pressure regulating spring seat; 8. e, a valve core; 9. a valve housing seat; 10. f, a valve core; 11. f, valve core seat; 12. a spring with large pressure difference; 13. a pressure differential small spring; 14. a spring pad; 15. a differential pressure regulating seat; 16. adjusting the screw rod; 17. a proportional electromagnet; 18. a nut; 19. a seal member; 20. a push rod; 21. and (6) plugging by screwing.
Detailed Description
As shown in fig. 1-2, the integrated proportional pressure control valve includes a valve body 3, a constant pressure adjusting screw 1, an F valve core 10, an adjusting screw 16, an E valve core 8, and a proportional electromagnet 17, wherein the constant pressure adjusting screw 1 is installed in the valve body 3 through an adjusting seat 2, an end portion of the valve body 3 is provided with an adjusting spring 6, the other end of the adjusting spring 6 is sleeved on an adjusting spring seat 7, the adjusting spring seat 7 is provided at an end portion of the E valve core 8, the E valve core 8 is fixed in the valve body 3 through a valve sleeve seat 9, the other end is connected with a push rod 20 in the proportional electromagnet 17, the F valve core 10 and the adjusting screw 16 are installed at an upper portion of the valve body 3, a damper 4 and a damper switch 5 are provided at a lower portion of the valve body 3, an F valve core seat 11 is provided at an inner end of the F valve core 10, a small differential pressure spring 13 and a large differential pressure spring 12 are sleeved on the F valve core seat 11 from inside to outside, the adjusting screw 16 is provided in a differential pressure adjusting seat 15 through a nut 18, the inner end of the adjusting screw 16 is provided with a spring pad 14.
The small differential pressure spring 13 and the large differential pressure spring 12 are arranged between the F valve core seat 11 and the spring pad 14, and the adjusting screw 16 is rotated to push the spring pad 14 to adjust the compression amount of the small differential pressure spring 13 and the large differential pressure spring 12, so that the spring force at the right end of the valve core is changed to set the required hydraulic pressure.
The valve body 3 is provided with a plug 21 at the outer end of the valve core 10 of the F valve, the plug 21 and the outer end of the valve core 10 of the F valve form a closed oil cavity which is communicated with an oil outlet of an oil pump through an internal oil path and keeps consistent with the pressure of the oil outlet.
A sealing element 19 is arranged between the adjusting screw 16 and the differential pressure adjusting seat 15.
The utility model has the advantages of reasonable design, change the spring force of valve into the electromagnetic force, realize direct electromagnetic pressure control, need not increase electromagnetic pressure control valve in hydraulic system in addition.
In the device, the valve body 3 is a parent part, and other parts are all assembled in or on the valve body. The compression amount of the pressure regulating spring 6 can be adjusted by rotating the constant pressure regulating screw rod 1, and the spring force is changed. The spring force acts on the E spool 8 through the pressure regulator spring seat 7. The other end of the E valve core 8 interacts with a push rod 21 of the proportional electromagnet 17 and bears the acting force of the proportional electromagnet 17. The whole E valve component plays a role of pilot control and controls the action of the F valve.
The use process of the device is described as follows:
firstly, the constant pressure adjusting screw 1 is adjusted, and an initial spring force is set to act on the left end of the E valve core 8. The high-pressure oil of the pump acts on the right end of the E valve core 8, the force of the proportional electromagnet 17 also acts on the right end of the E valve core 8, when the hydraulic pressure of the right end of the E valve core 8 is added with the electromagnetic force and is smaller than the spring force of the left end, the E valve core 8 is in the initial position, and the whole valve does not act. Along with the rise of the pressure of the hydraulic oil, the hydraulic pressure at the right end of the E valve core 8 is added with the electromagnetic force, and when the hydraulic pressure is larger than the spring force at the left end, the E valve core 8 is opened, and the high-pressure oil at the right end of the F valve core 10 is unloaded.
The left end of the F valve core 10 is normally communicated with high-pressure oil, and the right end of the F valve core 10 is communicated with the left end through a damping hole to lead the high-pressure oil to the right end from the left end. Under the condition that the right oil cavity is closed, the hydraulic oil pressure at the left end and the right end of the F valve core 10 is the same, the valve core action area is the same, the action force is the same, but the right end of the F valve core 10 has a spring force, so that the valve core is closed when the right oil cavity of the F valve core 10 is closed and is not unloaded. When the pressure of the oil pump rises and the E valve core 8 is opened, the high-pressure oil in the right cavity of the F valve core 10 is unloaded, due to the damping effect, the hydraulic pressure at the right end of the F valve is added with the spring force and is smaller than the hydraulic pressure at the left end, the F valve core is opened, the valve core moves to the right, the high-pressure oil of the oil pump enters the variable piston cavity, the discharge capacity is reduced, and the pressure is kept constant. The oil pump can only output the hydraulic flow required by the system. Thus, the required oil pump pressure can be adjusted steplessly by changing the current of the electromagnet.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (4)
1. Integrated proportional pressure control valve, its characterized in that: the constant-pressure adjusting device comprises a valve body, a constant-pressure adjusting screw, an F valve core, an adjusting screw, an E valve core and a proportional electromagnet, wherein the constant-pressure adjusting screw is installed in the valve body through an adjusting seat, an adjusting spring is arranged at the end part in the valve body in a sleeved mode, the other end of the adjusting spring is sleeved on an adjusting spring seat, the end part of the E valve core is arranged on the adjusting spring seat, the E valve core is fixed in the valve body through the valve sleeve seat, the other end of the E valve core is connected with a push rod in the proportional electromagnet, the F valve core and the adjusting screw are installed on the upper portion of the valve body, the lower portion of the valve body is provided with a damping switch, the inner end of the F valve core is provided with the F valve core seat, a small pressure difference spring and a large pressure difference spring are sleeved on the F valve core seat from inside to outside, the adjusting screw is arranged in the pressure difference adjusting seat through a nut, and the inner end of the adjusting screw is provided with a spring cushion.
2. The integrated proportional pressure control valve of claim 1, wherein: the small differential pressure spring and the large differential pressure spring are arranged between the F valve core seat and the spring pad, and the adjusting screw rod is rotated to push the spring pad to adjust the compression amount of the small differential pressure spring and the large differential pressure spring.
3. The integrated proportional pressure control valve of claim 1, wherein: the outer end of the valve body F valve core is provided with a plug, and the plug and the outer end of the valve body F valve core form a closed oil cavity.
4. The integrated proportional pressure control valve of claim 1, wherein: and a sealing element is arranged between the adjusting screw and the pressure difference adjusting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312982.3U CN215110868U (en) | 2021-02-04 | 2021-02-04 | Integrated proportional pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312982.3U CN215110868U (en) | 2021-02-04 | 2021-02-04 | Integrated proportional pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215110868U true CN215110868U (en) | 2021-12-10 |
Family
ID=79334178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120312982.3U Active CN215110868U (en) | 2021-02-04 | 2021-02-04 | Integrated proportional pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215110868U (en) |
-
2021
- 2021-02-04 CN CN202120312982.3U patent/CN215110868U/en active Active
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