CN210977814U - Wire holder fixing mechanism of vacuum pump - Google Patents
Wire holder fixing mechanism of vacuum pump Download PDFInfo
- Publication number
- CN210977814U CN210977814U CN201921978545.4U CN201921978545U CN210977814U CN 210977814 U CN210977814 U CN 210977814U CN 201921978545 U CN201921978545 U CN 201921978545U CN 210977814 U CN210977814 U CN 210977814U
- Authority
- CN
- China
- Prior art keywords
- counter bore
- outer side
- wire holder
- boss
- vacuum pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
The utility model relates to a wire holder fixing mechanism of a vacuum pump, which comprises a shell, a sealing ring, a pressing plate and a screw; a boss is formed outwards on one side of the shell, a first counter bore is formed in the outer side of the boss, a second counter bore is formed in the center of the bottom surface of the first counter bore, a third counter bore is formed in the center of the bottom surface of the second counter bore, a sealing ring is embedded in the third counter bore, and the pressing plate is detachably fixed on the outer side of the boss through four screws which are distributed symmetrically in pairs; the utility model firmly presses the wire holder on the chamfer ring on the sealing ring by means of the pressing plate, thereby greatly improving the sealing effect, effectively preventing looseness and ensuring the sealing durability; in addition, the processing procedure is simplified, and the manufacture is convenient.
Description
Technical Field
The utility model relates to a wire holder fixed establishment of vacuum pump.
Background
The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physical-chemical method, a vacuum pumping assembly arranged in a vacuum pump shell needs to be connected with an external power supply by virtue of a wire holder, but in order to ensure good air tightness, the wire holder needs to be fixed in the shell in a sealing way, a sealing ring of the existing vacuum pump is embedded in the inner wall of a boss, the wire holder is inserted into the sealing ring and is fixedly clamped by virtue of a pressure spring, but the pressing force of the pressure spring on the wire holder is limited and uneven, the sealing effect is poor, and leakage is easily caused; in addition, the fixing of sealing washer and pressure spring all need set up the annular heavy groove on the inner wall of boss, and manufacturing procedure is loaded down with trivial details, and the manufacturing degree of difficulty is high, awaits further improvement.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a connection terminal fixed establishment of vacuum pump that has improved sealed effect by a wide margin and guaranteed sealed persistence degree has been simplified manufacturing procedure, is convenient for provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a wire holder fixed establishment of vacuum pump, includes casing, sealing washer, clamp plate and screw, its characterized in that: a boss is formed outwards on one side of the shell, a first counter bore is formed in the outer side of the boss, a second counter bore is formed in the center of the bottom surface of the first counter bore, a third counter bore is formed in the center of the bottom surface of the second counter bore, a through hole is formed in the center of the bottom surface of the third counter bore, the sealing ring is embedded in the third counter bore, the cross section of the sealing ring is rectangular, chamfer rings distributed in a circumferential direction are formed on the upper side of the inner wall of the sealing ring, the pressing plate is detachably fixed on the outer side of the boss through four screws distributed in a pairwise symmetrical mode, a circular hole is formed in the center of the pressing plate, a convex ring is formed outwards on the inner wall of the circular hole, and; the outer side of the convex ring is provided with an external thread, correspondingly, the inner wall of the first counter bore is provided with an internal thread, and the external thread is inserted into the internal thread in a threaded manner.
Furthermore, four threaded holes which are symmetrically distributed in pairs are formed in the outer side of the boss, and the four threaded holes are distributed in the outer side of the first counter bore.
Furthermore, four mounting holes which are symmetrically distributed in pairs are formed in the pressing plate, and the four mounting holes are uniformly distributed on the outer side of the round hole and are concentrically arranged with the four threaded holes respectively.
Further, the threaded ends of the four screws respectively penetrate through the four mounting holes and are respectively inserted into and screwed in the four threaded holes.
Compared with the prior art, the utility model has the advantages of: the utility model firmly presses the wire holder on the chamfer ring on the sealing ring by means of the pressing plate, thereby greatly improving the sealing effect, effectively preventing looseness and ensuring the sealing durability; in addition, the processing procedure is simplified, and the manufacture is convenient.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a structural diagram of the pressing plate of the present invention;
Fig. 3 is a sectional structure diagram of the sealing ring, the wire holder and the pressing plate of the present invention.
Detailed Description
As shown in fig. 1 to 3, a wire holder fixing mechanism of a vacuum pump includes a housing 1, a seal ring 2, a pressure plate 4 and a screw 5; a boss 11 is formed outwards on one side of the shell 1, a first counter bore 12 is formed in the outer side of the boss 11, a second counter bore 13 is formed in the center of the bottom surface of the first counter bore 12, a third counter bore 14 is formed in the center of the bottom surface of the second counter bore 13, a through hole 15 is formed in the center of the bottom surface of the third counter bore 14, four threaded holes 16 which are symmetrically distributed in pairs are further formed in the outer side of the boss 11, the four threaded holes 16 are all distributed in the outer side of the first counter bore 12, the sealing ring 2 is embedded into the third counter bore 14, the cross section of the sealing ring 2 is rectangular, a chamfer ring 21 which is circumferentially distributed is formed on the upper side of the inner wall of the sealing ring 2, the pressing plate 4 is detachably fixed on the outer side of the boss 11 through four screws 5 which are symmetrically distributed in pairs, a circular hole 44 is formed in the center of; the outer side of the convex ring 41 is provided with an external thread 42, correspondingly, the inner wall of the first counter bore 12 is provided with an internal thread 17, the external thread 42 is inserted into the internal thread 17 through screw connection, four mounting holes 43 which are symmetrically distributed in pairs are opened in the pressure plate 4, the four mounting holes 43 are all distributed on the outer side of the round hole 44 and are respectively concentrically arranged with the four threaded holes 16, and the threaded ends of the four screws 5 respectively penetrate through the four mounting holes 43 and are respectively inserted into the four threaded holes 16 through screw connection.
When in use; the four screws 5 are removed and the pressing plate 4 is removed, then the wire holder 3 is placed on the sealing ring 2, and the outer side of the lower end of the wire holder 3 is attached to the chamfering ring 21, then the external thread 42 on the pressure plate 4 is aligned with the internal thread 17 on the boss 11 and is screwed in slowly, and with the slow screwing in of the external thread 42, the convex ring 41 slowly presses the upper end edge of the wire holder 3, thereby enabling the outer side of the lower end of the wire holder 3 to press the chamfer ring 21, thereby performing a sealing function, when the external thread 42 is screwed in to some extent, so that the four mounting holes 43 are respectively provided concentrically with the four threaded holes 16, four screws 5 are then inserted through the four mounting holes 43 and screwed into the four threaded holes 16, thereby fixing the pressing plate 4 on the boss 11, the pressing plate 4 does not rotate so that the wire holder 3 is loosened, the sealing connection between the outer side of the lower end of the wire holder 3 and the chamfer ring 21 can be ensured to be effective and durable.
The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physical-chemical method, a vacuum pumping assembly arranged in a vacuum pump shell needs to be connected with an external power supply by virtue of a wire holder 3, but in order to ensure good air tightness, the wire holder 3 needs to be fixed in the shell in a sealing way, a sealing ring of the existing vacuum pump is embedded in the inner wall of a boss 11, the wire holder 3 is inserted into the sealing ring and the wire holder 3 is clamped and fixed by virtue of a pressure spring, but the pressing force of the pressure spring on the wire holder 3 is limited and uneven, the sealing effect is poor, and leakage is easily caused; in addition, annular sinking grooves need to be formed in the inner wall of the boss 11 for fixing the sealing ring and the pressure spring, the processing procedure is complicated, and the manufacturing difficulty is high; the utility model firmly presses the wire holder 3 on the chamfer ring 21 on the sealing ring 2 by means of the pressing plate 4, thereby greatly improving the sealing effect, effectively preventing looseness and ensuring the sealing durability; in addition, the processing procedure is simplified, and the manufacture is convenient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (4)
1. The utility model provides a wire holder fixed establishment of vacuum pump, includes casing, sealing washer, clamp plate and screw, its characterized in that: a boss is formed outwards on one side of the shell, a first counter bore is formed in the outer side of the boss, a second counter bore is formed in the center of the bottom surface of the first counter bore, a third counter bore is formed in the center of the bottom surface of the second counter bore, a through hole is formed in the center of the bottom surface of the third counter bore, the sealing ring is embedded in the third counter bore, the cross section of the sealing ring is rectangular, chamfer rings distributed in a circumferential direction are formed on the upper side of the inner wall of the sealing ring, the pressing plate is detachably fixed on the outer side of the boss through four screws distributed in a pairwise symmetrical mode, a circular hole is formed in the center of the pressing plate, a convex ring is formed outwards on the inner wall of the circular hole, and; the outer side of the convex ring is provided with an external thread, correspondingly, the inner wall of the first counter bore is provided with an internal thread, and the external thread is inserted into the internal thread in a threaded manner.
2. A wire holder fixing mechanism of a vacuum pump as claimed in claim 1, wherein: four threaded holes which are symmetrically distributed in pairs are further formed in the outer side of the boss, and the four threaded holes are all distributed in the outer side of the first counter bore.
3. A wire holder fixing mechanism of a vacuum pump according to claim 2, wherein: four mounting holes which are symmetrically distributed in pairs are formed in the pressing plate, and the four mounting holes are uniformly distributed on the outer side of the round hole and are respectively concentrically arranged with the four threaded holes.
4. A wire holder fixing mechanism of a vacuum pump according to claim 3, wherein: the threaded ends of the four screws respectively penetrate through the four mounting holes and are respectively inserted into and screwed in the four threaded holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921978545.4U CN210977814U (en) | 2019-11-15 | 2019-11-15 | Wire holder fixing mechanism of vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921978545.4U CN210977814U (en) | 2019-11-15 | 2019-11-15 | Wire holder fixing mechanism of vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210977814U true CN210977814U (en) | 2020-07-10 |
Family
ID=71424258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921978545.4U Active CN210977814U (en) | 2019-11-15 | 2019-11-15 | Wire holder fixing mechanism of vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210977814U (en) |
-
2019
- 2019-11-15 CN CN201921978545.4U patent/CN210977814U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211879413U (en) | Improved battery aluminum cover plate | |
| CN210977814U (en) | Wire holder fixing mechanism of vacuum pump | |
| CN210092146U (en) | Battery sealing ring | |
| CN105014347A (en) | Electric press-in device for storage battery sealing ring | |
| CN110094706B (en) | Lighting lamp sealing ring | |
| CN209876869U (en) | Sealing ring of illuminating lamp | |
| CN202367477U (en) | Internal surface machining fixture for momentum wheel housing | |
| CN213929428U (en) | Novel combined sealing ring | |
| CN209743357U (en) | Screw and housing assembly | |
| JP4541869B2 (en) | Electrochemical cell | |
| CN208937314U (en) | A kind of thin-walled lid panel hydraulic pressure test fixture | |
| CN211088331U (en) | Sealing ring applied to interior of explosion-proof zinc-manganese dry battery | |
| CN219975569U (en) | Novel valve core assembly | |
| CN220544075U (en) | Battery anode and cathode and shell connecting assembly and battery | |
| CN109211561A (en) | A kind of thin-walled lid panel hydraulic pressure test fixture | |
| CN209996029U (en) | cooking utensil's display module and cooking utensil | |
| CN214578818U (en) | Vacuumizing interface device | |
| CN212848007U (en) | Transformer bushing | |
| CN211117584U (en) | Mechanical sealing element capable of reducing corrosion degree of joint | |
| CN210599814U (en) | Air leakage type sucking disc for small household appliances | |
| CN212055156U (en) | Oil-immersed deep-well pump motor sealing structure | |
| CN216111456U (en) | Fluid director of water pump | |
| CN214036867U (en) | Compressor seal structure, compressor, air conditioning equipment and vehicle | |
| CN212868523U (en) | Valve sleeve for high-performance electric gate valve | |
| CN221254704U (en) | Titanium anode external member with multiple sealed isolation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |