CN216519931U - Electro-hydraulic quick-break valve - Google Patents
Electro-hydraulic quick-break valve Download PDFInfo
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- CN216519931U CN216519931U CN202123163140.5U CN202123163140U CN216519931U CN 216519931 U CN216519931 U CN 216519931U CN 202123163140 U CN202123163140 U CN 202123163140U CN 216519931 U CN216519931 U CN 216519931U
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- valve core
- core
- main valve
- control valve
- cone
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Abstract
An electrohydraulic quick-break valve comprises an armature, a coil, a control valve core, a valve body, a main valve core, a small spring, a large spring, a taper hole seat, an oil return box, a gland, a locking nut and a taper core. The left end of the main valve core is provided with an inner taper hole, an outer column of the main valve core is provided with a ring groove, and the right end face of the main valve core is drilled with a small hole communicated with the ring groove. Through grooves are symmetrically formed in the outer column in the middle of the control valve core along the axial direction, and a cone matched with the inner cone hole of the main valve core is arranged at the left end in the middle of the control valve core. The central part of the conical hole seat is provided with a conical hole matched with the conical core, and the conical core is assembled on a step shaft at the left part of the control valve core and is fixed by a locking nut. When an oil way needs to be cut off emergently, the main valve core is driven by hydraulic pressure and electromagnetic force together, and the cutting-off speed is quicker.
Description
Technical Field
The invention relates to an electro-hydraulic quick-break valve.
Background
The electromagnetic force of the electro-hydraulic reversing valve of the hydraulic system does not act on the main valve core generally, and when the oil circuit needs to be cut off urgently, the main valve core can only be driven by hydraulic pressure.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the electro-hydraulic quick-break valve, when an oil way needs to be cut off in an emergency, the main valve core of the electro-hydraulic quick-break valve is driven by hydraulic pressure and electromagnetic force together, and the cutting-off speed is quicker.
The technical scheme adopted by the invention for solving the technical problems is as follows: the designed electro-hydraulic quick-break valve comprises an armature, a coil, a control valve core, a valve body, a main valve core, a small spring, a large spring, a taper hole seat, an oil return box, a gland, a locking nut and a taper core, wherein the main valve core is in sliding fit with the valve body, the left end of the main valve core is provided with an inner taper hole, an outer column of the main valve core is provided with a ring groove, the right end surface of the main valve core is drilled with a small hole communicated with the ring groove, the outer column in the middle of the control valve core is axially and symmetrically provided with through grooves, the left end in the middle of the control valve core is provided with a cone matched with the inner taper hole of the main valve core, the taper core is assembled on a step shaft in the left part of the control valve core and is fixed by the locking nut, the taper hole seat is fixedly arranged at the left part of the valve body, the center part of the taper hole seat is provided with a taper hole matched with the taper core, the two ends of the small spring are respectively supported on the taper hole seat and the left end in the middle of the main valve core, the large spring is respectively supported on the taper hole seat and the left end of the core, the right part of the valve body is symmetrically provided with an oil inlet connector and an oil outlet connector, and the left cavity of the valve body is communicated with an oil return tank.
According to the technical scheme, the left cavity of the valve body is communicated with the oil return box, and a through hole is formed in the end face of the gland and is communicated with the oil return box.
The working principle of the invention is as follows: when the main valve core is positioned at the right end, the oil inlet and outlet ports on the valve body are communicated through the annular groove on the outer column of the main valve core, at the moment, the taper hole at the central part of the taper hole seat is closed, and the inner taper hole of the main valve core is opened. When the oil inlet and outlet ports on the valve body need to be cut off rapidly, the coil is electrified and applies leftward electromagnetic force to the armature, so that the control valve core moves leftward, the inner taper hole of the main valve core is closed, the taper hole in the center of the taper hole seat is opened, and pressure difference is formed between two ends of the main valve core. Therefore, the main valve core is rapidly moved to the right under the pushing of the electromagnetic force and the hydraulic force to cut off the oil path. When the oil circuit needs to be connected, the coil loses power, the small spring pushes the control valve core to move right, the inner taper hole of the main valve core is opened, the taper hole in the center of the taper hole seat is closed, and the pressure difference between the two ends of the main valve core disappears. Therefore, the main valve core moves to the right end under the action of the large spring and is communicated with the oil inlet interface and the oil outlet interface.
The invention has the beneficial effects that: the oil circuit is cut off more quickly.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a view a-a of fig. 1.
In the figure, 1, an armature, 2, a coil, 3, a control valve core, 4, a valve body, 5, a main valve core, 6, a small spring, 7, a large spring, 8, a conical hole seat, 9, an oil return box, 10, a gland, 11, a locking nut and 12 conical cores.
Detailed Description
As shown in fig. 1 and 2, an electrohydraulic quick-break valve according to an embodiment of the present invention includes an armature 1, a coil 2, a control valve core 3, a valve body 4, a main valve core 5, a small spring 6, a large spring 7, a conical hole seat 8, an oil return tank 9, a gland 10, a lock nut 11, and a conical core 12. The main valve core 5 is in sliding fit with the valve body 4, the left end of the main valve core 5 is provided with an inner taper hole, an outer column of the main valve core 5 is provided with a ring groove, and the right end face of the main valve core 5 is drilled with a small hole communicated with the ring groove. Through grooves are symmetrically formed in the outer column in the middle of the control valve core 3 along the axial direction, and a cone matched with the inner taper hole of the main valve core 5 is arranged at the left end of the middle of the control valve core 3. The taper core 12 is assembled on the step shaft at the left part of the control valve core 3 and is fixed by the locking nut 11, the taper hole seat 8 is fixedly installed at the left part of the valve body 4, and the center part of the taper hole seat 8 is provided with a taper hole matched with the taper core 12. Two ends of the small spring 6 are respectively supported on the left ends of the middle parts of the taper hole seat 8 and the control valve core 3, and two ends of the large spring 7 are respectively supported on the left ends of the taper hole seat 8 and the main valve core 5. The right part of the valve body 4 is symmetrically provided with an oil inlet interface and an oil outlet interface, and the left cavity of the valve body 4 is communicated with an oil return tank 9. When the coil 2 is not electrified, and the main valve core 5 is positioned at the right end, the oil inlet and outlet ports on the valve body 4 are communicated through the annular groove on the outer column of the main valve core 5, at the moment, the taper hole at the central part of the taper hole seat 8 is closed, and the inner taper hole of the main valve core 5 is opened. When the oil inlet and outlet ports on the valve body 4 need to be cut off rapidly, the coil 2 is electrified and applies leftward electromagnetic force to the armature 1, so that the control valve core 3 moves leftward, the inner taper hole of the main valve core 5 is closed, the taper hole at the center of the taper hole seat 8 is opened, and pressure difference is formed between two ends of the main valve core 5. Thus, main valve element 5 is driven by the combination of electromagnetic force and hydraulic force to move right rapidly to cut off the oil path. When the oil circuit needs to be connected, the coil 2 loses power, the small spring 6 pushes the control valve core 3 to move right, the inner taper hole of the main valve core 5 is opened, the taper hole in the center of the taper hole seat 8 is closed, and the pressure difference between the two ends of the main valve core 5 disappears. Therefore, the main valve element 5 moves to the right end under the action of the large spring 7, and is communicated with the oil inlet interface and the oil outlet interface.
Claims (2)
1. The utility model provides an electric liquid quick-break valve, includes armature, coil, control valve core, valve body, main valve core, little spring, big spring, taper hole seat, returns oil tank, gland, lock nut and awl core, its characterized in that: the main valve core is in sliding fit with the valve body, an inner taper hole is formed in the left end of the main valve core, a ring groove is formed in an outer column of the main valve core, a small hole communicated with the ring groove is drilled in the right end face of the main valve core, through grooves are symmetrically formed in the outer column in the middle of the control valve core along the axial direction, a cone matched with the inner taper hole of the main valve core is arranged at the left end of the middle of the control valve core, the cone core is assembled on a step shaft of the left portion of the control valve core and fixed through a locking nut, a cone hole seat is fixedly installed at the left portion of the valve body, a cone hole matched with the cone core is formed in the center of the cone hole seat, two ends of a small spring are respectively supported on the cone hole seat and the left end of the middle of the control valve core, two ends of a large spring are respectively supported on the cone hole seat and the left end of the main valve core, an oil inlet port and an oil outlet port are symmetrically formed in the right portion of the valve body, and the left cavity of the valve body is communicated with an oil return tank.
2. An electro-hydraulic quick disconnect valve as defined in claim 1 wherein: the left cavity of the valve body is communicated with the oil return box, and the end face of the gland is provided with a through hole which is communicated with the oil return box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123163140.5U CN216519931U (en) | 2021-12-16 | 2021-12-16 | Electro-hydraulic quick-break valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123163140.5U CN216519931U (en) | 2021-12-16 | 2021-12-16 | Electro-hydraulic quick-break valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216519931U true CN216519931U (en) | 2022-05-13 |
Family
ID=81497990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123163140.5U Active CN216519931U (en) | 2021-12-16 | 2021-12-16 | Electro-hydraulic quick-break valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216519931U (en) |
-
2021
- 2021-12-16 CN CN202123163140.5U patent/CN216519931U/en active Active
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