CN215981081U - Magnetorheological valve with adjustable effective damping gap length - Google Patents
Magnetorheological valve with adjustable effective damping gap length Download PDFInfo
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- CN215981081U CN215981081U CN202122402564.6U CN202122402564U CN215981081U CN 215981081 U CN215981081 U CN 215981081U CN 202122402564 U CN202122402564 U CN 202122402564U CN 215981081 U CN215981081 U CN 215981081U
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Abstract
The utility model discloses a magnetorheological valve with an adjustable effective damping gap length, which mainly comprises a left end cover, a mandrel, a left magnetic conduction block, a permanent magnet, a valve body, a right magnetic conduction block, a right end cover and the like. The annular gap between the left magnetic conduction block and the boss on the inner wall of the valve body forms an effective damping gap A, the annular gap between the right magnetic conduction block and the boss on the inner wall of the valve body forms an effective damping gap B, and the lengths of the effective damping gaps A and B can be adjusted by adjusting the axial position of the mandrel in the valve body. Under the excitation of the permanent magnet, magnetic fields perpendicular to the liquid flow direction are formed in the effective damping gaps A and B. When the magnetorheological fluid flows through the effective damping gaps A and B, the pressure of the magnetorheological fluid is reduced due to the magnetorheological effect, the reduction value is related to the lengths of the effective damping gaps A and B, and the purpose of changing the pressure of the magnetorheological fluid by adjusting the length of the effective damping gap under the condition of no excitation power supply is achieved. The pressure-adjustable magnetorheological valve is particularly suitable for the field of pressure-adjustable magnetorheological valves without external power supply excitation.
Description
Technical Field
The utility model relates to a magnetorheological valve, in particular to a magnetorheological valve with an adjustable effective damping gap length.
Background
The magnetic current changing valve is a new type hydraulic control valve using magnetic current changing liquid as working medium. The magnetorheological fluid is an intelligent fluid and can be instantly converted into a visco-plastic body with certain shear yield strength from a free flowing Newtonian fluid under the action of a magnetic field; after the magnetic field is removed, the liquid can be recovered into a free-flowing Newtonian fluid. The pressure of the magnetorheological valve can be controlled by controlling the magnitude of the impressed current. Compared with the traditional hydraulic control valve, the hydraulic control valve has the advantages of simple structure, low processing cost, high response speed, low noise, low energy consumption, stable and reliable work, contribution to the realization of intelligent control and good application prospect.
In the traditional magnetorheological valve structure, the pressure drop of an inlet and an outlet is adjusted by adjusting the exciting current in the exciting coil, and the adjusting mode needs to add a power supply and a control module thereof, so that the complexity of a system is increased in an application occasion without frequently adjusting the pressure drop.
Based on the above, the utility model provides the magnetorheological valve with the adjustable effective damping gap length, and the adjustment of the pressure drop of the inlet and the outlet of the magnetorheological valve can be realized by adjusting the effective damping gap length in the magnetorheological valve.
Disclosure of Invention
In order to overcome the defects of the magnetorheological valve in the background technology during working and meet the engineering application requirements, the utility model provides the magnetorheological valve with the adjustable effective damping gap length. The annular gap between the left magnetic conduction block and the boss on the inner wall of the valve body of the magnetorheological valve forms an effective damping gap A, the annular gap between the right magnetic conduction block and the boss on the inner wall of the valve body forms an effective damping gap B, and the lengths of the effective damping gap A and the effective damping gap B can be adjusted by adjusting the axial position of the mandrel in the valve body. The left magnetic conduction block, the effective damping gap A, the valve body, the effective damping gap B, the right magnetic conduction block and the permanent magnet form a magnetic field closed loop. Under the excitation of the permanent magnet, a magnetic field perpendicular to the liquid flow direction is formed in the effective damping gap A and the effective damping gap B. When the magnetorheological fluid flows through the effective damping gap A and the effective damping gap B, the pressure of the magnetorheological fluid is reduced due to the magnetorheological effect, and the reduction value is related to the lengths of the effective damping gap A and the effective damping gap B, so that the aim of changing the pressure of the magnetorheological fluid by adjusting the length of the effective damping gap under the condition of no excitation power supply is fulfilled.
The technical scheme adopted by the utility model for solving the technical problem comprises the following steps: the magnetic valve comprises a left end cover (1), a sealing ring I (2), a sealing ring II (3), a mandrel (4), a left magnetic conduction block (5), a permanent magnet (6), a valve body (7), a right magnetic conduction block (8), a nut (9), a sealing ring III (10), a right end cover (11) and a sealing ring IV (12); the left end cover (1) is attached to the left end face of the valve body (7) and fixedly connected with the valve body through a screw; the outer circumferential surface of the right end of the left end cover (1) and the inner circumferential surface of the valve body (7) are sealed through a sealing ring I (2); a central through hole is formed in the middle of the left magnetic conduction block (5), and the central through hole penetrates through the mandrel (4); the left end surface of the left magnetic conduction block (5) is attached to the upper shaft shoulder of the mandrel (4); a central through hole is formed in the middle of the permanent magnet (6) and penetrates through the mandrel (4); the left end surface of the permanent magnet (6) is attached to the right end surface of the left magnetic conduction block (5); a central through hole is formed in the middle of the right magnetic conduction block (8), and the central through hole penetrates through the mandrel (4); the left end surface of the right magnetic conduction block (8) is attached to the right end surface of the permanent magnet (6); the nut (9) is fixedly connected with the mandrel (4) through threads, and the left end surface of the nut is attached to the right magnetic conduction block (8); the right end cover (11) is attached to the right end face of the valve body (7) and fixedly connected with the right end face through a screw; the outer circumferential surface of the left end of the right end cover (11) and the inner circumferential surface of the valve body (7) are sealed through a sealing ring III (10); a threaded through hole is machined in the center of the left end cover (1), and the left end of the mandrel (4) is connected with the left end cover (1) through the threaded through hole; a through hole is processed in the center of the right end cover (11), and the right end of the mandrel (4) penetrates through the central through hole of the right end cover (11); the central threaded hole between the mandrel (4) and the left end cover (1) is dynamically sealed through a sealing ring II (3); the central through hole between the mandrel (4) and the right end cover (11) is dynamically sealed through a sealing ring IV (12); an effective damping gap A is formed by an annular gap between the left magnetic conduction block (5) and a boss on the inner wall of the valve body (7); an effective damping gap B is formed by an annular gap between the right magnetic conduction block (8) and a boss on the inner wall of the valve body (7); magnetorheological fluid sequentially flows through the small hole in the left end cover (1), the effective damping gap A, the effective damping gap B and the small hole in the right end cover (11) to form a magnetorheological valve fluid channel C, and the magnetorheological valve can be connected into a hydraulic circuit through the small hole in the left end cover (1) and the small hole in the right end cover (11).
Compared with the background technology, the utility model has the following beneficial effects:
(1) the left magnetic conduction block, the effective damping gap A, the valve body, the effective damping gap B, the right magnetic conduction block and the permanent magnet of the magnetorheological valve form a magnetic field closed loop, and a magnetic field perpendicular to the liquid flow direction is formed in the effective damping gap A and the effective damping gap B under the excitation of the permanent magnet.
(2) The magnetorheological valve can adjust the position of the mandrel in the valve body by rotating the mandrel, the lengths of the effective damping gap A and the effective damping gap B can be correspondingly changed, and the pressure drop of the magnetorheological fluid after passing through the effective damping gap A and the effective damping gap B is changed along with the change of the length of the effective damping gap.
(3) The magnetorheological valve adopts the permanent magnet as a magnetic field excitation source, and does not need power supply.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a magnetic field distribution diagram of the present invention.
FIG. 3 is a right shift structure diagram of the mandrel of the present invention.
Figure 4 is a left shift structure diagram of the mandrel of the present invention.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural diagram of the present invention. The magnetic valve comprises a left end cover (1), a sealing ring I (2), a sealing ring II (3), a mandrel (4), a left magnetic conduction block (5), a permanent magnet (6), a valve body (7), a right magnetic conduction block (8), a nut (9), a sealing ring III (10), a right end cover (11) and a sealing ring IV (12). An effective damping gap A is formed by an annular gap between the left magnetic conduction block (5) and a boss on the inner wall of the valve body (7); an effective damping gap B is formed by an annular gap between the right magnetic conduction block (8) and a boss on the inner wall of the valve body (7). The small hole on the left end cover (1), the effective damping gap A, the effective damping gap B and the small hole on the right end cover (11) form a magnetorheological valve fluid channel C.
Fig. 2 is a magnetic field distribution diagram of the present invention. The left magnetic conduction block (5), the effective damping gap A, the valve body (7), the effective damping gap B, the right magnetic conduction block (8) and the permanent magnet (6) form a magnetic field closed loop, and under the excitation of the permanent magnet, a magnetic field perpendicular to the liquid flow direction is formed in the effective damping gap A and the effective damping gap B.
FIG. 3 is a right shift structure diagram of the mandrel of the present invention. After the mandrel (4) moves to the right, the lengths of the effective damping gap A and the effective damping gap B are changed.
Figure 4 is a left shift structure diagram of the mandrel of the present invention. After the mandrel (4) moves leftwards, the lengths of the effective damping gap A and the effective damping gap B are changed.
The working principle of the utility model is as follows:
the annular gap between the left magnetic conduction block and the boss on the inner wall of the valve body forms an effective damping gap A, the annular gap between the right magnetic conduction block and the boss on the inner wall of the valve body forms an effective damping gap B, and the lengths of the effective damping gap A and the effective damping gap B can be adjusted by adjusting the axial position of the mandrel in the valve body. The left magnetic conduction block, the effective damping gap A, the valve body, the effective damping gap B, the right magnetic conduction block and the permanent magnet form a magnetic field closed loop, and under the excitation of the permanent magnet, a magnetic field perpendicular to the liquid flow direction is formed in the effective damping gap A and the effective damping gap B. When the magnetorheological fluid flows through the effective damping gap A and the effective damping gap B, the pressure of the magnetorheological fluid is reduced due to the magnetorheological effect, the reduction value is related to the lengths of the effective damping gap A and the effective damping gap B, and the pressure of the magnetorheological fluid is changed by adjusting the length of the effective damping gap under the condition of no excitation power supply.
Claims (3)
1. A magnetorheological valve with adjustable effective damping gap length which characterized in that includes: the magnetic valve comprises a left end cover (1), a sealing ring I (2), a sealing ring II (3), a mandrel (4), a left magnetic conduction block (5), a permanent magnet (6), a valve body (7), a right magnetic conduction block (8), a nut (9), a sealing ring III (10), a right end cover (11) and a sealing ring IV (12); the left end cover (1) is attached to the left end face of the valve body (7) and fixedly connected with the valve body through a screw; the outer circumferential surface of the right end of the left end cover (1) and the inner circumferential surface of the valve body (7) are sealed through a sealing ring I (2); a central through hole is formed in the middle of the left magnetic conduction block (5), and the central through hole penetrates through the mandrel (4); the left end surface of the left magnetic conduction block (5) is attached to the upper shaft shoulder of the mandrel (4); a central through hole is formed in the middle of the permanent magnet (6) and penetrates through the mandrel (4); the left end surface of the permanent magnet (6) is attached to the right end surface of the left magnetic conduction block (5); a central through hole is formed in the middle of the right magnetic conduction block (8), and the central through hole penetrates through the mandrel (4); the left end surface of the right magnetic conduction block (8) is attached to the right end surface of the permanent magnet (6); the nut (9) is fixedly connected with the mandrel (4) through threads, and the left end surface of the nut is attached to the right magnetic conduction block (8); the right end cover (11) is attached to the right end face of the valve body (7) and fixedly connected with the right end face through a screw; the outer circumferential surface of the left end of the right end cover (11) and the inner circumferential surface of the valve body (7) are sealed through a sealing ring III (10); a threaded through hole is machined in the center of the left end cover (1), and the left end of the mandrel (4) is connected with the left end cover (1) through the threaded through hole; a through hole is processed in the center of the right end cover (11), and the right end of the mandrel (4) penetrates through the central through hole of the right end cover (11); the central threaded hole between the mandrel (4) and the left end cover (1) is sealed by a sealing ring II (3); the central through hole between the mandrel (4) and the right end cover (11) is sealed by a sealing ring IV (12).
2. The magnetorheological valve with an adjustable effective damping gap length of claim 1, wherein: an effective damping gap A is formed by an annular gap between the left magnetic conduction block (5) and a boss on the inner wall of the valve body (7); an effective damping gap B is formed by an annular gap between the right magnetic conduction block (8) and a boss on the inner wall of the valve body (7).
3. The magnetorheological valve with an adjustable effective damping gap length of claim 1, wherein: magnetorheological fluid sequentially flows through the small hole in the left end cover (1), the effective damping gap A, the effective damping gap B and the small hole in the right end cover (11) to form a magnetorheological valve fluid channel C, and the magnetorheological valve can be connected into a hydraulic circuit through the small hole in the left end cover (1) and the small hole in the right end cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402564.6U CN215981081U (en) | 2021-10-07 | 2021-10-07 | Magnetorheological valve with adjustable effective damping gap length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402564.6U CN215981081U (en) | 2021-10-07 | 2021-10-07 | Magnetorheological valve with adjustable effective damping gap length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215981081U true CN215981081U (en) | 2022-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122402564.6U Active CN215981081U (en) | 2021-10-07 | 2021-10-07 | Magnetorheological valve with adjustable effective damping gap length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215981081U (en) |
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2021
- 2021-10-07 CN CN202122402564.6U patent/CN215981081U/en active Active
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