CN211202400U - Anti-loose sealing device for impeller nut - Google Patents
Anti-loose sealing device for impeller nut Download PDFInfo
- Publication number
- CN211202400U CN211202400U CN201921951180.6U CN201921951180U CN211202400U CN 211202400 U CN211202400 U CN 211202400U CN 201921951180 U CN201921951180 U CN 201921951180U CN 211202400 U CN211202400 U CN 211202400U
- Authority
- CN
- China
- Prior art keywords
- nut
- sealing
- locking
- impeller
- tensioning
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 60
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an anti-loosening sealing device for impeller nut, including impeller, pump shaft, lock nut, sealed pad and tightening nut, its characterized in that tightening nut, sealed pad and lock nut are connected with the pump shaft in proper order, tightening nut one end is inconsistent with the impeller, and the other end inserts equally with pump shaft threaded connection's lock nut's tubaeform locking hole through the tensioning sealing, through screwing in proper order of lock nut for lock nut compresses tightly the tensioning sealing of tightening nut, and closely cooperates through the sealing pad after pegging graft through the screw thread of tensioning sealing and the epaxial screw thread of pump and seals tightly, reaches the purpose of locking seal. The utility model has the advantages of novel structure, processing convenience, low manufacturing cost, convenient dismounting, rapidness, high anti-loosening reliability, high sealing performance and the like.
Description
Technical Field
The utility model relates to the field of fluid machinery, specific impeller nut locking sealing device for stealthily dirty pump that says so.
Background
As is well known, the shaft end impeller of the existing submersible sewage pump is usually fastened by adopting an impeller nut, the structural design of the impeller nut needs to consider two factors, namely ① should avoid the nut from loosening and even falling off due to vibration, inversion and the like, ② has a sealing function when conveying corrosive media and protecting the pump shaft, so that the pump shaft is isolated from the media.
At present, the anti-loosening measures of the impeller nut comprise anti-loosening of a retaining washer, anti-loosening of a thread locking sealant, anti-loosening of a pin, anti-loosening of spot welding, anti-loosening of double nuts, anti-loosening of a locking type screw thread sleeve and the like. From locking effect, above most of structures can all accomplish simply reliably. However, if the sealing device also has a sealing function, only locking type wire thread sleeves and other structures are available at present. The substantial disadvantages of this structure are: when the internal thread of the impeller nut 11 is sleeved with the steel wire thread insert 12 and then is matched with the external thread on the pump shaft 13, the steel wire thread insert 12 occupies a certain space, and the machining of the thread of the impeller nut 11 needs to be compensated in a certain size, so that the tapping of the internal thread hole of the impeller nut 11 cannot adopt a standard screw tap, but needs a special steel wire thread insert screw tap, and the inspection of the internal thread of the impeller nut and the installation of the steel wire thread insert also need special tools, so that the machining and the inspection are inconvenient, the assembly and disassembly difficulty is high, and the anti-loosening reliability is low.
Disclosure of Invention
The utility model aims at solving the deficiencies of the prior art, provide a novel structure, processing convenience, cost of manufacture low, easy dismounting, swift, locking reliability is high, the impeller nut locking sealing device that the leakproofness is high.
The utility model provides a technical scheme that its technical problem adopted is:
an impeller nut anti-loose sealing device comprises an impeller, a pump shaft, a lock nut, a sealing gasket and a tightening nut, and is characterized in that the lock nut blind hole is formed by coaxially communicating a threaded hole and a trumpet-shaped locking hole from inside to outside,
the tightening nut is formed by coaxially and integrally connecting a locking part and a tensioning sealing part, the tensioning sealing part is conical and has the same taper as a horn-shaped locking hole of the locking nut, the outer diameter of the large end of the tensioning sealing part is smaller than the outer diameter of the locking part, at least 3 tensioning open grooves are arranged in a circumferential array of the end part of the tensioning sealing part, and extend along the axial direction,
the tightening nut, the sealing gasket and the locking nut are sequentially connected with the pump shaft, one end of the tightening nut is abutted to the impeller, the other end of the tightening nut is inserted into a horn-shaped locking hole of the locking nut which is also in threaded connection with the pump shaft through the tensioning sealing part, the tightening nut is sequentially screwed to enable the locking nut to compress the tensioning sealing part of the tightening nut, the threads of the tensioning sealing part are closely matched and spliced with the threads on the pump shaft, and then the tightening nut is hermetically compressed through the sealing gasket, so that the purpose of locking and sealing is achieved.
The sealed pad of adopting tetrafluoroethylene to seal up to reach the effect that sealing performance is high.
The conical surface inclination of the trumpet-shaped locking hole of the locking nut is 10-15 degrees, the utility model discloses preferred adoption 12 to reach the effect that locking sealing performance is high.
The utility model discloses owing to adopt above-mentioned structure, have novel structure, processing convenience, cost of manufacture low, easy dismounting, swift, locking reliability is high, advantages such as leakproofness height.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a front view of the nut according to the present invention.
Fig. 3 is a left side view of fig. 2.
Reference numerals: the pump comprises an impeller 1, a pump shaft 2, a lock nut 3, a sealing gasket 4, a tightening nut 5, a locking part 8, a tensioning sealing part 9, a tensioning open slot 10 and a gasket 11.
Detailed Description
The present invention will be described with reference to the accompanying drawings and examples.
As shown in the attached drawing, the anti-loose sealing device of the impeller nut comprises an impeller 1, a pump shaft 2, a lock nut 3, a sealing gasket 4 and a tightening nut 5, and is characterized in that a lock nut blind hole is formed by coaxially communicating a threaded hole and a trumpet-shaped locking hole from inside to outside,
the tightening nut 5 is formed by coaxially and integrally connecting a locking part 8 and a tensioning sealing part 9, the tensioning sealing part 9 is conical and is the same as the conical degree of a horn-shaped locking hole of the locking nut 3, the outer diameter of the large-diameter end of the tensioning sealing part 9 is smaller than the outer diameter of the locking part 8, at least 3 tensioning open grooves 10 are arranged in a circumferential array at the end part of the tensioning sealing part 9, the tensioning open grooves 10 extend along the axial direction,
screw up nut 5, sealed 4 and lock nut 3 and be connected with pump shaft 2 in proper order, screw up 5 one end of nut and impeller 1 are inconsistent, and the other end inserts in the tubaeform locking hole of lock nut 3 with pump shaft 2 threaded connection equally through tensioning sealing 9, through screwing in proper order of lock nut 3 for lock nut 3 compresses tightly the tensioning sealing 9 of screwing up nut 5, and closely cooperates the back through the sealing pad 4 and seal and compress tightly through the screw thread of tensioning sealing 9 and the screw thread on the pump shaft 2, reaches the purpose of locking seal.
The sealed pad 4 of filling up adopts the sealed pad of tetrafluoroethylene to reach the effect that sealing performance is high.
The conical surface inclination of the trumpet-shaped locking hole of the locking nut 3 is 10-15 degrees, the utility model discloses preferred adoption 12 to reach the effect that locking sealing performance is high.
The utility model discloses still can the cover has packing ring 11 on the pump shaft between tightening nut and impeller to reach and carry out the effect of fixing a position to the impeller through the packing ring.
The utility model discloses when the installation, earlier packing ring 11 is packed into at 2 tip of pump shaft that install impeller 1, install again and screw up nut 5, with gland washer 11, then seal up 4 covers at the tensioning sealing 9 of screwing up nut 5 with sealed, twist lock nut 3 at last, screw in proper order through lock nut 3, make lock nut 3 compress tightly the tensioning sealing 9 of screwing up nut 5 through sealing pad 4, reach the sealed effect of locking, through the tension of tensioning sealing 9 to lock nut 3, lock nut 3 has been prevented to loosen when rotatory, and, through the sealed 4 sealed sealing of tetrafluoroethylene pad, make sealed effect better show.
The utility model discloses owing to adopt above-mentioned structure, have novel structure, processing convenience, cost of manufacture low, easy dismounting, swift, locking reliability is high, advantages such as leakproofness height.
Claims (4)
1. An impeller nut anti-loose sealing device comprises an impeller, a pump shaft, a lock nut, a sealing gasket and a tightening nut, and is characterized in that the lock nut blind hole is formed by coaxially communicating a threaded hole and a trumpet-shaped locking hole from inside to outside,
the tightening nut is formed by coaxially and integrally connecting a locking part and a tensioning sealing part, the tensioning sealing part is conical and has the same taper as a horn-shaped locking hole of the locking nut, the outer diameter of the large end of the tensioning sealing part is smaller than the outer diameter of the locking part, at least 3 tensioning open grooves are arranged in a circumferential array of the end part of the tensioning sealing part, and extend along the axial direction,
the tightening nut, the sealing gasket and the locking nut are sequentially connected with the pump shaft, one end of the tightening nut is abutted to the impeller, the other end of the tightening nut is inserted into a horn-shaped locking hole of the locking nut which is also in threaded connection with the pump shaft through the tensioning sealing part, the locking nut is sequentially screwed, so that the tensioning sealing part of the tightening nut is compressed by the locking nut, and the tightening nut is tightly matched and plugged with a thread on the pump shaft through the thread of the tensioning sealing part and then is tightly compressed through the sealing gasket.
2. The anti-loose sealing device for the impeller nut as claimed in claim 1, wherein the gasket is a tetrafluoroethylene gasket.
3. The impeller nut loose-proof sealing device as claimed in claim 1 or 2, wherein the taper of the flared locking hole of the lock nut is 10 ° to 15 °.
4. The anti-loose sealing device for the impeller nut as claimed in claim 3, wherein the taper of the flared locking hole of the lock nut is 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951180.6U CN211202400U (en) | 2019-11-13 | 2019-11-13 | Anti-loose sealing device for impeller nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951180.6U CN211202400U (en) | 2019-11-13 | 2019-11-13 | Anti-loose sealing device for impeller nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202400U true CN211202400U (en) | 2020-08-07 |
Family
ID=71881726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921951180.6U Active CN211202400U (en) | 2019-11-13 | 2019-11-13 | Anti-loose sealing device for impeller nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847268A (en) * | 2021-08-25 | 2021-12-28 | 烟台恒邦泵业有限公司 | Locking subassembly and magnetic drive pump thereof |
-
2019
- 2019-11-13 CN CN201921951180.6U patent/CN211202400U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847268A (en) * | 2021-08-25 | 2021-12-28 | 烟台恒邦泵业有限公司 | Locking subassembly and magnetic drive pump thereof |
| CN113847268B (en) * | 2021-08-25 | 2024-03-19 | 烟台恒邦泵业有限公司 | Locking subassembly and magnetic drive pump thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204986090U (en) | Pipeline connection joint | |
| CN102224363B (en) | Compression sensor gasket and method of construction | |
| CN211202400U (en) | Anti-loose sealing device for impeller nut | |
| CN203421370U (en) | Right-angle connector component | |
| CN103567959B (en) | Cylinder head spark plug swivel nut press mounting tool | |
| CN204114383U (en) | A kind of cone seal pipe joint | |
| CN203784518U (en) | Flexible brake hose for water conservancy machinery for farmland | |
| CN112628520A (en) | High-pressure self-tightening pipeline plugging device | |
| CN209267135U (en) | A kind of charging pile flange form waterproof connector | |
| CN218294597U (en) | Well-sealed valve body | |
| CN210859795U (en) | Split overflow valve hole plug sealed by conical surface | |
| CN207094047U (en) | Novel threaded plug | |
| CN212775112U (en) | Riveting type mutual pressing sealing structure | |
| CN201126055Y (en) | Stop valve and pipe connection component connecting stop valve and pipeline | |
| CN209041978U (en) | Storage pressure tests fast connecting joint | |
| CN210269040U (en) | High-efficient water pressure test fixture | |
| CN212657405U (en) | Quick connector with hexagon nut | |
| CN2388458Y (en) | Clamping type pipe joint | |
| CN222963515U (en) | A rotatable joint | |
| CN209943312U (en) | Round sealing nut | |
| US7077955B1 (en) | Joint used in one of a water inlet or water outlet of a filter cylinder or a filter casing | |
| CN210318906U (en) | Anti-loosening movable joint | |
| CN215928708U (en) | Connecting mechanism for pipe body and joint of high-pressure oil pipe | |
| CN2740866Y (en) | Pipeline connecting structure | |
| CN108799830A (en) | Storage pressure tests fast connecting joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |