CN213900062U - Leakage-proof magnetic transmission rotary valve - Google Patents
Leakage-proof magnetic transmission rotary valve Download PDFInfo
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- CN213900062U CN213900062U CN202023010497.5U CN202023010497U CN213900062U CN 213900062 U CN213900062 U CN 213900062U CN 202023010497 U CN202023010497 U CN 202023010497U CN 213900062 U CN213900062 U CN 213900062U
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- magnetic rotor
- valve
- rotor
- permanent magnets
- valve rod
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Abstract
The utility model discloses a leakage-proof magnetic transmission rotary valve, which comprises a shell, a driving shaft, an outer magnetic rotor, an isolation cover, an inner magnetic rotor, a valve rod, a valve core and a valve body, wherein the driving shaft extends into the shell and is concentrically sleeved with the outer magnetic rotor, so that the outer magnetic rotor synchronously rotates along with the driving shaft; the inner magnetic rotor and the outer magnetic rotor are arranged concentrically, and the magnetic fields are opposite; the isolating cover isolates the inner magnetic rotor from the outer magnetic rotor and fixes the inner magnetic rotor and the outer magnetic rotor; the inner magnetic rotor, the outer magnetic rotor and the isolation cover are not in contact with each other and are all arranged in the shell; the inner magnetic rotor and one end of the valve rod are concentrically sleeved, so that the valve rod synchronously rotates along with the inner magnetic rotor; the other end of the valve rod penetrates through the valve body and extends downwards to be connected with the valve core, so that the valve core rotates around the valve rod; the valve core is arranged in the valve body; the utility model discloses utilize magnetic force to realize contactless transmission, thoroughly solved the problem of revealing that the movive seal exists, improved sealed reliability by a wide margin, suitable using widely.
Description
Technical Field
The utility model relates to a rotation valve technical field, especially a prevent magnetic drive rotation valve of leakage.
Background
The rotary valve drives the valve rod to act through the driving mechanism and rotates clockwise or anticlockwise respectively to achieve the purpose of closing or opening the valve. The driving mechanism can not be arranged in the valve body, but only can be arranged outside the valve body, and the valve rod is connected with the driving mechanism and the valve core and transmits torque required by opening and closing the valve. In a traditional rotary valve structure, a valve rod is sealed by adopting a packing material, but because the valve rod has relative rotary motion, after the rotary valve structure is used for a long time, due to the reasons of abrasion, corrosion and the like, a gap between the valve rod and the packing material is larger and larger, the sealing failure is caused, and fluid with certain pressure in a valve body is easy to leak out along the gap of a protruding part of the valve rod. The leakage not only affects the field environment, but also is difficult to ensure the safety in the application occasions where the leakage is not allowed, such as corrosive or toxic.
Disclosure of Invention
The utility model aims at providing a prevent magnetic drive rotation valve of leakage to the problem that prior art exists, its aim at: the driving mechanism is completely isolated from the valve rod, and the rotary valve can be completely closed.
The utility model adopts the technical scheme as follows: a leakage-proof magnetic transmission rotary valve comprises a shell, a driving shaft, an external magnetic rotor, a separation cover, an internal magnetic rotor, a valve rod, a valve core and a valve body, wherein the driving shaft extends into the shell and is concentrically sleeved with the external magnetic rotor, so that the external magnetic rotor synchronously rotates along with the driving shaft; the inner magnetic rotor and the outer magnetic rotor are arranged concentrically, and the magnetic fields are opposite; the isolating cover isolates the inner magnetic rotor from the outer magnetic rotor and fixes the inner magnetic rotor and the outer magnetic rotor; the inner magnetic rotor, the outer magnetic rotor and the isolation cover are not in contact with each other and are all arranged in the shell; the inner magnetic rotor and one end of the valve rod are concentrically sleeved, so that the valve rod synchronously rotates along with the inner magnetic rotor; the other end of the valve rod penetrates through the valve body and extends downwards to be connected with the valve core, so that the valve core rotates around the valve rod; the valve core is arranged in the valve body.
Preferably, the outer magnetic rotor and the inner magnetic rotor are both of a cylindrical structure, the number of the permanent magnets on the outer magnetic rotor and the number of the permanent magnets on the inner magnetic rotor are equal, the permanent magnets are both 2n, the permanent magnets are uniformly distributed along the circumferential surfaces of the outer magnetic rotor and the inner magnetic rotor, the magnetic field directions of the permanent magnets are radial, and the magnetic field directions of the adjacent permanent magnets on the same rotor are opposite.
Or the outer magnetic rotor and the inner magnetic rotor are both in a disc-shaped structure, the number of the permanent magnets on the outer magnetic rotor and the number of the permanent magnets on the inner magnetic rotor are equal, the permanent magnets are all 2n, the permanent magnets are arranged on the disc surface and are uniformly distributed along the circumferential direction, the magnetic field directions of the permanent magnets are axial, and the magnetic field directions of the adjacent permanent magnets on the same rotor are opposite.
Furthermore, the isolation cover is made of a non-magnetic material; the isolation cover is fixed on the valve body, a sealing ring is arranged on the contact surface of the isolation cover and the valve body, and static sealing is realized through the sealing ring; the isolation cover isolates the valve rod from the driving shaft, and the leakage at the valve rod is maintained in the isolation cover.
Further, the driving mechanism of the driving shaft includes, but is not limited to, a hand wheel, an electric actuator and a pneumatic actuator.
The beneficial effects of the utility model reside in that: compared with the prior art, the utility model has the following advantages: the utility model relates to a prevent transmission of magnetic drive rotation valve of leakage passes through magnetic force and realizes the transmission of power, utilizes the characteristic that magnetic drive need not the contact, keeps apart valve rod and drive structure completely through the cage for the fluid seals completely in cage and valve body, because the sealed of cage is static seal, does not have the problem that the sealing washer wearing and tearing became invalid, has thoroughly solved the problem of revealing that axial dynamic seal exists, has improved sealed reliability by a wide margin, suitable using widely.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of the leakage-proof magnetic transmission rotary valve of the present invention.
Fig. 2 is a schematic structural view of a second embodiment of the leakage-proof magnetic transmission rotary valve of the present invention.
In the figure: 1-shell, 2-drive shaft, 3-outer magnetic rotor, 4-isolation cover, 5-inner magnetic rotor, 6-valve rod, 7-valve core, 8-valve body, 9-permanent magnet, 10-sealing ring and 11-drive mechanism.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, which are set forth below for illustrating the technical solution of the present invention and are not limited thereto.
As shown in fig. 1-2, a leakage-proof magnetic transmission rotary valve comprises a housing (1), a driving shaft (2), an outer magnetic rotor (3), a shielding case (4), an inner magnetic rotor (5), a valve rod (6), a valve core (7) and a valve body (8). The driving shaft (2) extends into the shell (1) and is concentrically sleeved with the external magnetic rotor (3), so that the external magnetic rotor (3) synchronously rotates along with the driving shaft (2); the inner magnetic rotor (5) and the outer magnetic rotor (3) are arranged concentrically, and the magnetic fields are opposite; the isolation cover (4) isolates the inner magnetic rotor (5) from the outer magnetic rotor (3) and is fixed; the inner magnetic rotor (5), the outer magnetic rotor (3) and the isolation cover (4) are not in contact with each other and are all arranged in the shell (1); the inner magnetic rotor (5) and one end of the valve rod (6) are concentrically sleeved, so that the valve rod (6) synchronously rotates along with the inner magnetic rotor (5); the other end of the valve rod (6) penetrates through the valve body and extends downwards to be connected with the valve core (7), so that the valve core (7) rotates around the valve rod (6); the valve core (7) is arranged inside the valve body (8). The isolation cover (4) is made of non-magnetic conductive material. The isolation cover (4) is fixed on the valve body (8), a sealing ring (10) is arranged on the contact surface of the isolation cover (4) and the valve body (8), and static sealing is realized through the sealing ring (10). The isolation cover (4) isolates the valve rod (6) from the driving shaft (2), and leakage at the valve rod (6) is maintained in the isolation cover (4).
When the rotary valve works, the driving shaft (2) is driven by the driving mechanism (11) to rotate and drive the outer magnetic rotor (3) to rotate, the outer magnetic rotor (3) drives the inner magnetic rotor (5) to rotate in the same direction through magnetic field coupling, and further drives the valve rod (6) to rotate, and the valve rod (6) drives the valve core (7) to rotate when rotating, so that the rotary valve is opened and closed.
As an embodiment, as shown in fig. 1, the outer magnetic rotor (3) and the inner magnetic rotor (4) are both of a cylindrical structure, the number of the permanent magnets (9) on the outer magnetic rotor (3) and the inner magnetic rotor (4) is equal, and the number of the permanent magnets is 2n, the permanent magnets (9) are uniformly distributed along the circumferential surfaces of the outer magnetic rotor and the inner magnetic rotor, the magnetic field directions of the permanent magnets (9) are radial, and the magnetic field directions of the adjacent permanent magnets (9) on the same rotor are opposite.
As an embodiment, as shown in fig. 2, the outer magnetic rotor (3) and the inner magnetic rotor (4) are both disc-shaped structures, the number of the permanent magnets (9) on the outer magnetic rotor (3) and the inner magnetic rotor (4) is equal, and the permanent magnets are 2n, the permanent magnets (9) are arranged on the disc surface and uniformly distributed along the circumferential direction, the magnetic field direction of the permanent magnets (9) is axial, and the magnetic field directions of the adjacent permanent magnets (9) on the same rotor are opposite.
The above embodiments are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea provided by the present invention all fall within the protection scope of the present invention; the technology not related to the utility model can be realized by the prior art.
Claims (6)
1. The utility model provides a prevent magnetic drive rotary valve of leakage, includes shell (1), drive shaft (2), outer magnet rotor (3), cage (4), interior magnet rotor (5), valve rod (6), case (7), valve body (8), its characterized in that: the driving shaft (2) extends into the shell (1) and is concentrically sleeved with the outer magnetic rotor (3), so that the outer magnetic rotor (3) synchronously rotates along with the driving shaft (2); the inner magnetic rotor (5) and the outer magnetic rotor (3) are arranged concentrically, and the magnetic fields are opposite; the isolation cover (4) isolates the inner magnetic rotor (5) from the outer magnetic rotor (3) and is fixed; the inner magnetic rotor (5), the outer magnetic rotor (3) and the isolation cover (4) are not in contact with each other and are all arranged in the shell (1); the inner magnetic rotor (5) and one end of the valve rod (6) are concentrically sleeved, so that the valve rod (6) synchronously rotates along with the inner magnetic rotor (5); the other end of the valve rod (6) penetrates through the valve body and extends downwards to be connected with the valve core (7), so that the valve core (7) rotates around the valve rod (6); the valve core (7) is arranged inside the valve body (8).
2. A leak resistant, magnetically actuated rotary valve as claimed in claim 1, wherein: the outer magnetic rotor (3) and the inner magnetic rotor (5) are both of a cylindrical structure, the number of the permanent magnets (9) on the outer magnetic rotor (3) and the inner magnetic rotor (5) is equal, the number of the permanent magnets is 2n, the permanent magnets (9) are uniformly distributed along the circumferential surfaces of the outer magnetic rotor and the inner magnetic rotor, the magnetic field directions of the permanent magnets (9) are radial, and the magnetic field directions of the adjacent permanent magnets (9) on the same rotor are opposite.
3. A leak resistant, magnetically actuated rotary valve as claimed in claim 1, wherein: the outer magnetic rotor (3) and the inner magnetic rotor (5) are both disc-shaped structures, the number of the permanent magnets (9) on the outer magnetic rotor (3) and the number of the permanent magnets (9) on the inner magnetic rotor (5) are equal and are 2n, the permanent magnets (9) are arranged on a disc surface and are uniformly distributed along the circumferential direction, the magnetic field directions of the permanent magnets (9) are axial, and the magnetic field directions of the adjacent permanent magnets (9) on the same rotor are opposite.
4. A leak resistant, magnetically actuated rotary valve as claimed in any one of claims 1-3, wherein: the isolation cover (4) is made of non-magnetic materials.
5. A leak resistant, magnetically actuated rotary valve as claimed in any one of claims 1-3, wherein: the isolation cover (4) is fixed on the valve body (8), a sealing ring (10) is arranged on the contact surface of the isolation cover (4) and the valve body (8), and static sealing is realized through the sealing ring (10); the isolation cover (4) isolates the valve rod (6) from the driving shaft (2), and the leakage at the valve rod (6) is maintained in the isolation cover (4).
6. A leak resistant, magnetically actuated rotary valve as claimed in any one of claims 1-3, wherein: the driving mechanism (11) of the driving shaft (2) is a hand wheel or an electric actuating mechanism or a pneumatic actuating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023010497.5U CN213900062U (en) | 2020-12-15 | 2020-12-15 | Leakage-proof magnetic transmission rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023010497.5U CN213900062U (en) | 2020-12-15 | 2020-12-15 | Leakage-proof magnetic transmission rotary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213900062U true CN213900062U (en) | 2021-08-06 |
Family
ID=77103029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023010497.5U Active CN213900062U (en) | 2020-12-15 | 2020-12-15 | Leakage-proof magnetic transmission rotary valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213900062U (en) |
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2020
- 2020-12-15 CN CN202023010497.5U patent/CN213900062U/en active Active
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