CN218747330U - Magnetic bearing embedment frock of magnetic suspension molecular pump - Google Patents
Magnetic bearing embedment frock of magnetic suspension molecular pump Download PDFInfo
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- CN218747330U CN218747330U CN202223409643.0U CN202223409643U CN218747330U CN 218747330 U CN218747330 U CN 218747330U CN 202223409643 U CN202223409643 U CN 202223409643U CN 218747330 U CN218747330 U CN 218747330U
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- molecular pump
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Abstract
The utility model discloses a magnetic suspension molecular pump magnetic bearing embedment frock, it belongs to magnetic suspension molecular pump instrument field, and its technical essential lies in, include: the device comprises an upper mandrel tool, a lower mandrel tool and an encapsulating base; the mandrel upper tool is of a cylindrical structure, and an upper end panel is arranged on the upper end face of the circumferential side wall part; protruding plates are arranged at the lower part of the circumferential side wall part at intervals, and a tool accommodating groove on the mandrel is formed between every two adjacent protruding plates; the direction of the protruding plate extends downward along the circumferential side wall portion; a bulge part and an insertion groove are arranged on the periphery of the tool body under the mandrel; an insertion groove is arranged between the adjacent convex parts; the protruding portion of the tool body under the mandrel is inserted into the tool accommodating groove on the mandrel, and the protruding plate of the tool on the mandrel is inserted into the insertion groove of the tool body under the mandrel. The utility model aims at providing a magnetic suspension molecular pump magnetic bearing embedment frock, the easy drawing of patterns after the solidification of embedment glue, assembly and disassembly is more convenient.
Description
Technical Field
The utility model relates to a this technical field in magnetic suspension molecular pump field, concretely relates to magnetic suspension molecular pump magnetic bearing embedment frock.
Background
With the continuous upgrade of vacuum molecular pumps, oil lubrication and grease lubrication molecular pumps are upgraded to the existing magnetic suspension molecular pumps, and a magnetic bearing used by the magnetic suspension molecular pump is a high-performance bearing, and a main shaft of the magnetic suspension molecular pump is suspended in the air by utilizing the magnetic force generated by a coil, so that the main shaft is not in mechanical contact with a bearing seat stator. After the molecular pump is electrified, the magnetic field of the magnetic bearing is enabled to keep the main shaft of the molecular pump at the central position of the molecular pump through the control circuit. Meanwhile, the magnetic bearing has the advantages of low energy consumption, low noise, long service life, no lubrication, no oil pollution and the like, and can meet the use requirements of the magnetic suspension molecular pump on high speed and vacuum.
The magnetic bearing generally consists of a silicon steel sheet and a coil winding, and aims to improve the reliability of stable operation of the magnetic bearing and uniformly dissipate heat.
The conventional magnetic bearing encapsulation tool (for example, CN 107546904A) has the problems of poor air tightness, difficult demoulding and the like, the problems of glue leakage during glue injection, secondary glue supplement and the like caused by the fact that the process requirements are not met by primary encapsulation and the like are caused at a large rate, and the work time is consumed for cleaning the overflow glue on the outer wall of the encapsulated magnetic bearing.
In conclusion, it is necessary to design and manufacture a magnetic bearing encapsulating tool which has stable glue amount during encapsulation, is not easy to leak glue and can be used for encapsulating the encapsulated magnetic bearing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to above-mentioned prior art not enough, provide a magnetic suspension molecular pump magnetic bearing embedment frock.
The technical scheme of the utility model as follows:
the utility model provides a magnetic suspension molecular pump magnetic bearing embedment frock, includes: the device comprises a mandrel upper tool, a mandrel lower tool and an encapsulating base; the mandrel upper tool, the mandrel lower tool and the encapsulating base are sequentially arranged from top to bottom;
wherein, frock is cylindric structure on the dabber, and it includes: an upper end panel, a circumferential side wall portion; an upper end panel is arranged on the upper end surface of the circumferential side wall part; protruding plates are arranged at the lower part of the circumferential side wall part at intervals, and a tool accommodating groove on a mandrel is formed between every two adjacent protruding plates; the direction of the protruding plate extends downward along the circumferential side wall portion;
wherein, frock includes under the dabber: a mandrel lower tool body; the middle part of the lower mandrel tool body is provided with a through hole, and the peripheral part of the lower mandrel tool body is provided with a convex part and an insertion groove; an insertion groove is arranged between the adjacent convex parts;
the protruding portion of the tool body under the mandrel is inserted into the tool accommodating groove on the mandrel, and the protruding plate of the tool on the mandrel is inserted into the insertion groove of the tool body under the mandrel.
Preferably, the encapsulation base comprises a base first part, a base installation groove and a base second part; the base first part is arranged at the center of the encapsulation base and is disc-shaped; the base second part is annular, and a base mounting groove is formed between the base first part and the base second part;
the base first part is matched with an opening in the lower portion of the mandrel lower tool body, and the lower end face of the mandrel lower tool body is inserted into the base mounting groove.
Preferably, the potting base further comprises: the base circumference raised steps are arranged on the outer periphery of the base second part.
Preferably, the magnetic suspension molecular pump magnetic bearing potting tool further includes: a seal ring; still be provided with the sealing washer under the dabber between the lower terminal surface of frock body and the base of embedment base is first.
Preferably, the sealing ring is a rubber ring.
Preferably, the number of the protruding portions and the number of the insertion grooves are both multiple, and the number of the protruding portions and the number of the insertion grooves are the same.
Preferably, the projections and the insertion grooves are uniformly arranged.
Preferably, the method further comprises the following steps: a rubber blocking ring, a rubber blocking ring gasket and a magnetic bearing; the lower end face of the magnetic bearing is arranged on the second part of the base of the encapsulation base, and the inner wall of the magnetic bearing is in contact with the outer surface of the tool below the core part; the upper surface of the magnetic bearing is placed on the rubber blocking ring gasket, and a rubber blocking ring is arranged on the upper surface of the rubber blocking ring gasket.
Preferably, the height of the upper surface of the glue blocking ring is lower than that of the upper end panel of the tool on the mandrel.
The beneficial effect of this application lies in:
first, the embedment frock of this application, the magnetic bearing after having solved the embedment solidification has the technical problem of bubble, fault, fracture, and easy drawing of patterns after the embedding glue solidification, and assembly and disassembly is more convenient.
Second, the embedment frock of this application includes: keep off the gluey ring, keep off gluey ring packing ring, dabber frock, sealing washer, embedment base down. The glue blocking ring is used for preventing the pouring glue from overflowing in the defoaming process; the rubber ring blocking washer is used for preventing the pouring sealant from overflowing between the rubber ring blocking washer and the magnetic bearing. The tool on the mandrel is used for pouring sealant for molding, and the curing molding of the upper end of the pouring sealant of the magnetic bearing is ensured. The lower mandrel tool and the upper mandrel tool have the same action and are in contact with the pouring and sealing base, and the pouring and sealing glue is shaped. The sealing ring is a rubber ring and is used for sealing the magnetic bearing and the tool below the mandrel, so that the pouring sealant is prevented from overflowing from the position. The encapsulation base is used for molding the bottom surface of the pouring sealant and simultaneously coaxially positioning the core part tool.
Drawings
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.
Fig. 1 is a schematic three-dimensional explosion diagram of a magnetic bearing potting tool of a magnetic levitation molecular pump in the first embodiment.
Fig. 2 is a schematic design diagram of the tooling on the mandrel according to the first embodiment.
Fig. 3 is a schematic design diagram of the tooling on the mandrel in another view angle according to the first embodiment.
Fig. 4 is a schematic design diagram of the tool under the mandrel according to the first embodiment.
Fig. 5 is a schematic design diagram of the under-mandrel tooling of the first embodiment at another viewing angle.
Fig. 6 is a structural schematic view of the assembly of the upper mandrel tool and the lower mandrel tool in the first embodiment.
Fig. 7 is a schematic three-dimensional design of a potting fixture of example one.
Fig. 8 is a schematic connection diagram of the potting base, the mandrel lower tool, and the seal ring in the first embodiment.
Fig. 9 is a three-dimensional schematic view of the magnetic bearing potting tool and the magnetic bearing of the magnetic levitation molecular pump in the first embodiment.
Fig. 10 is a plan view of the magnetic bearing potting tool and the magnetic bearings of the magnetic levitation molecular pump according to the first embodiment.
Fig. 11 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A of fig. 10.
The reference numbers in fig. 1-11 are illustrated as follows:
the device comprises a rubber blocking ring 100, a rubber blocking ring gasket 200, an upper mandrel tool 300, a lower mandrel tool 400, a sealing ring 500, an encapsulation base 600 and a magnetic bearing 700;
a threaded hole 101 of the glue blocking ring and a lead outlet hole 102;
an upper end panel 301, a circumferential side wall portion 302, a protruding plate 303, and an upper mandrel tool receiving groove 304;
a mandrel lower tool body 401, a through hole 402, a protruding part 403 and an insertion groove 404;
the base comprises a base first part 601, a base mounting groove 602, a base second part 603, a base circumference raised step 604 and a base second part threaded hole 605.
Detailed Description
The first embodiment is as follows: disclosed is a magnetic bearing encapsulating tool of a magnetic suspension molecular pump.
Fig. 1 illustrates an exploded view of a magnetic bearing potting tool 1000 of a magnetic levitation molecular pump from a three-dimensional perspective. From the attached FIG. 1, it can be seen that: a magnetic suspension molecular pump magnetic bearing embedment frock 1000 includes: keep off gluey ring 100, keep off gluey ring packing ring 200, dabber frock 300, dabber frock 400 down, sealing washer 500, embedment base 600.
Fig. 2 and 3 show a structural view of the tool 300 on the mandrel. As can be seen from fig. 2 and 3: frock 300 is cylindric structure on the dabber, and it includes: an upper end panel 301, a circumferential side wall portion 302;
an upper end panel 301 is arranged on the upper end surface of the circumferential side wall part 302, and a hole is formed in the central part of the upper end panel 301;
protruding plates 303 are arranged at intervals on the lower part of the circumferential side wall part 302, and a mandrel upper tool accommodating groove 304 is formed between every two adjacent protruding plates 303; the direction of the projecting plate 303 extends downward along the circumferential side wall portion.
Fig. 4 and 5 show a structure of the mandrel lower tool 400. Frock 400 includes under the dabber: a mandrel lower tool body 401; a through hole 402 is formed in the middle of the mandrel lower tool body 401, and a protrusion 403 and an insertion groove 404 are formed in the outer periphery of the mandrel lower tool body 401; an insertion groove 404 is provided between adjacent projections 403.
The number of the convex parts and the number of the insertion grooves are the same.
The projections and the insertion grooves are uniformly arranged.
Fig. 6 is a diagram illustrating a connection relationship between the mandrel upper tool 300 and the mandrel lower tool 400. As can be seen from fig. 6: the connection relationship between the upper mandrel tooling 300 and the lower mandrel tooling 400 is as follows: the projection 403 of the mandrel lower tool body 401 is inserted into the mandrel upper tool receiving groove 304, and the projection plate 3 of the mandrel upper tool 300 is inserted into the insertion groove 404 of the mandrel lower tool body 401.
It should be noted that: the length of the protruding plate 3 of the mandrel upper tool 300 may be smaller than the depth of the insertion groove 404 of the mandrel lower tool body 401.
Fig. 7 illustrates a layout of the potting mount 600 from a three-dimensional perspective. As can be seen from fig. 7: the encapsulation base 600 comprises a base first part 601, a base installation groove 602, a base second part 603 and a base peripheral raised step 604; the circle centers of the base first part 601, the base installation groove 602, the base second part 603 and the base circumference convex step 604 are concentric.
The base first portion 601 is disposed at the center of the potting base 600, and has a disk shape.
The base second portion 603 is annular, and a base mounting groove 602 is disposed between the base first portion 601 and the base second portion 603.
The base circumferential protruding step 604 is provided on the outer periphery of the base second portion 603.
Fig. 8 illustrates a connection diagram of the mandrel lower tool 400, the sealing ring 500 and the potting base 600. As can be seen from fig. 8: the lower end of the lower mandrel tool body 401 is mounted in the base mounting groove 602, and the first base portion 601 is matched with the lower end opening of the lower mandrel tool 400.
A sealing ring 500 is further disposed in the base mounting groove 602, that is, the sealing ring 500 is further disposed between the lower end of the tool body 401 and the base first portion 601 of the potting base 600 under the mandrel.
Fig. 9-11 show the magnetic bearing encapsulation tool of the magnetic suspension molecular pump and the installation schematic diagram of the magnetic bearing. As can be seen from fig. 9-11: when the installation is carried out, the sealing ring 500 is firstly installed in the base installation groove 602; then, centering and mounting the core lower tool 400 coated with the release agent on the encapsulation base 600; then, the magnetic bearing 700 is placed on the potting base 600 from top to bottom, and the core lower fixture 400 is tightly fitted to the inner wall of the magnetic bearing 700; then, the core upper tool 300 and the core lower tool 400 are installed in a centering manner; then, the glue stop ring gasket 200 and the glue stop ring 100 are sequentially placed over the magnetic bearing.
It should be noted that: as can be seen from fig. 10: the glue blocking ring 100 includes: four threaded holes 101, lead wire outlet holes 102; the lead wire outlet hole 102 is used for leading out a lead wire of the magnetic bearing 700; the second part of the base is also provided with four threaded holes 605, and the upper surface of the magnetic bearing 700 is provided with 2 threaded holes; 2 bolts pass through the threaded holes 101 of the glue blocking ring 100, the threaded holes of the magnetic bearing 700 and the threaded holes 605 of the second part of the base to fix the glue blocking ring, the magnetic bearing and the base into a whole.
It should be noted that: the number of the threaded holes 101 of the glue blocking ring 100 and the threaded holes 605 of the second portion of the base is larger than that of the threaded holes of the magnetic bearing 700, so that the positioning is convenient.
When glue is poured, the method comprises the following steps:
s1, cleaning each part of the magnetic suspension molecular pump magnetic bearing encapsulation tool by using gasoline ultrasonic waves, removing impurity oil stains on the surface of each part of the magnetic suspension molecular pump magnetic bearing encapsulation tool, and drying the surface of the tool by using a hot air gun; putting all parts of the magnetic bearing encapsulation tool of the magnetic suspension molecular pump after cleaning into an oven for baking at 180 ℃ for 30 minutes and taking out;
s2, coating a release agent on the contact part of each part of the magnetic suspension molecular pump magnetic bearing encapsulation tool and the encapsulation adhesive, and drying the release agent;
and S3, starting installation after the magnetic bearing is checked to have no problem, and finishing the installation as shown in FIG. 9.
S4, placing the installed magnetic bearing into a defoaming box, reducing the pressure in a vacuum barrel to 100pa, vacuumizing for 2 minutes, taking out and placing on a horizontal table top; tightly winding the base by using a black insulating adhesive tape, pouring the prepared pouring sealant into a potting tool (pouring glue from an annular space between the glue blocking ring and the tool on the mandrel), and stopping pouring the pouring sealant when the surface of the coil is filled and covered by the glue in the potting tool; and (4) placing the whole encapsulation tool into a defoaming tool barrel to begin defoaming, baking and curing when no bubble exists on the surface of the pouring sealant, and ending the pouring sealant.
The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.
Claims (9)
1. The utility model provides a magnetic suspension molecular pump magnetic bearing embedment frock which characterized in that includes: the device comprises a mandrel upper tool, a mandrel lower tool and an encapsulating base; the mandrel upper tool, the mandrel lower tool and the encapsulating base are sequentially arranged from top to bottom;
wherein, frock is cylindric structure on the dabber, and it includes: an upper end panel, a circumferential side wall portion; an upper end panel is arranged on the upper end surface of the circumferential side wall part; protruding plates are arranged at intervals on the lower part of the circumferential side wall part, and a tool accommodating groove on the mandrel is formed between every two adjacent protruding plates; the direction of the protruding plate extends downward along the circumferential side wall portion;
wherein, frock includes under the dabber: a mandrel lower tool body; the middle part of the lower tool body of the mandrel is provided with a through hole, and the peripheral part of the lower tool body of the mandrel is provided with a convex part and an insertion groove; an insertion groove is arranged between the adjacent convex parts;
the protruding portion of the tool body under the mandrel is inserted into the tool accommodating groove on the mandrel, and the protruding plate of the tool on the mandrel is inserted into the insertion groove of the tool body under the mandrel.
2. The magnetic suspension molecular pump magnetic bearing potting tool of claim 1, wherein the potting base comprises a base first portion, a base mounting groove, a base second portion; the base first part is arranged at the center of the encapsulation base and is disc-shaped; the second part of the base is annular, and a base mounting groove is formed between the first part of the base and the second part of the base;
the base first part with the opening adaptation of the lower part of frock body under the dabber, the lower terminal surface of frock body inserts under the dabber in the base mounting groove.
3. The magnetic levitation molecular pump magnetic bearing potting tool of claim 2, wherein the potting base further comprises: the base circumference raised steps are arranged on the outer periphery of the base second part.
4. The magnetic levitation molecular pump magnetic bearing potting tool of claim 2 or 3, further comprising: a seal ring; still be provided with the sealing washer under the dabber between the lower terminal surface of frock body and the base of embedment base is first.
5. The magnetic suspension molecular pump magnetic bearing potting tool of claim 4, wherein the sealing ring is a rubber ring.
6. The magnetic levitation molecular pump magnetic bearing potting tool of claim 1, wherein the number of the protrusions and the number of the insertion grooves are the same.
7. The magnetic levitation molecular pump magnetic bearing potting tool of claim 6, wherein the projections and the insertion slots are uniformly arranged.
8. The magnetic levitation molecular pump magnetic bearing potting tool of claim 1, wherein the magnetic levitation molecular pump magnetic bearing potting tool further comprises: a rubber blocking ring, a rubber blocking ring gasket and a magnetic bearing;
the lower end face of the magnetic bearing is arranged on the second part of the base of the encapsulation base;
the inner wall of the magnetic bearing is contacted with the outer surface of the tool below the core part;
the upper surface of the magnetic bearing is placed on the rubber blocking ring gasket, and a rubber blocking ring is arranged on the upper surface of the rubber blocking ring gasket.
9. The magnetic bearing potting tool of a magnetic suspension molecular pump of claim 1, wherein the height of the upper surface of the glue blocking ring is lower than the height of the upper end panel of the tool on the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223409643.0U CN218747330U (en) | 2022-12-19 | 2022-12-19 | Magnetic bearing embedment frock of magnetic suspension molecular pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223409643.0U CN218747330U (en) | 2022-12-19 | 2022-12-19 | Magnetic bearing embedment frock of magnetic suspension molecular pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218747330U true CN218747330U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223409643.0U Active CN218747330U (en) | 2022-12-19 | 2022-12-19 | Magnetic bearing embedment frock of magnetic suspension molecular pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218747330U (en) |
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- 2022-12-19 CN CN202223409643.0U patent/CN218747330U/en active Active
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