CN211343469U - Sealing structure at matching position of impeller and shaft of oil slurry pump - Google Patents
Sealing structure at matching position of impeller and shaft of oil slurry pump Download PDFInfo
- Publication number
- CN211343469U CN211343469U CN202020076766.9U CN202020076766U CN211343469U CN 211343469 U CN211343469 U CN 211343469U CN 202020076766 U CN202020076766 U CN 202020076766U CN 211343469 U CN211343469 U CN 211343469U
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- China
- Prior art keywords
- impeller
- shaft
- shaft hole
- section
- flexible graphite
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- 239000002002 slurry Substances 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 32
- 239000010439 graphite Substances 0.000 claims abstract description 32
- 230000013011 mating Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of power pumps, and discloses a sealing structure for the matching part of an impeller and a shaft of an oil slurry pump, wherein the matching section of a pump shaft is matched and connected with the shaft hole of the impeller so as to drive the impeller to rotate through the pump shaft, the fastening section of the pump shaft is fastened through an impeller nut, an adjusting gasket is arranged between the connecting section and the end surface of a first shaft hole, a first flexible graphite gasket is arranged between the adjusting gasket and the end surface of a butt joint, a second flexible graphite gasket is arranged between the adjusting gasket and the end surface of the first shaft hole, and a third flexible graphite gasket is arranged between the lower end surface of the impeller nut and the end surface of a second shaft hole, so that all matching surfaces with leakage are sealed through the flexible graphite gaskets, a medium can be effectively prevented from entering an impeller inner hole, the sealing effect is good, the structure is compact, moreover, the flexible graphite gaskets have good corrosion, the impeller can work in various environments, is less limited and has stronger adaptability.
Description
Technical Field
The utility model relates to a technical field of power pump especially relates to an oil slurry pump impeller and axle cooperation department seal structure.
Background
The impeller of the slurry pump is typically secured with an impeller nut. With regard to the structural design of the impeller nut, when the impeller of the oil slurry pump is used for conveying corrosive media and needs to protect the pump shaft, the impeller nut must have a sealing function at the same time so as to isolate the pump shaft from contacting the media.
Generally adopt the sealed structure of gluing of screw thread lock solid cooperation among the prior art, it has certain temperature limitation, and in specific temperature range, sealed effect is fine, nevertheless loses the sealing ability when exceeding this temperature range, and in addition, the current only seals in impeller nut department, and it is not comprehensive enough to seal, still has the risk in medium entering shaft hole and the impeller nut of impeller.
Disclosure of Invention
The utility model aims at providing an oil slurry pump impeller and axle cooperation department seal structure to solve the sealed structure that adopts of current impeller and axle, sealed glue has certain temperature limitation, and current sealed only is to the impeller nut moreover, and is sealed not comprehensive, still has the medium to get into the shaft hole of impeller and the problem in the impeller nut.
In order to solve the problems, the utility model provides a sealing structure at the matching part of an impeller and a shaft of an oil slurry pump, which comprises an impeller, a pump shaft and an impeller nut, the impeller is provided with a shaft hole, the pump shaft comprises a connecting section, a matching section and a fastening section, a butt end face is arranged between the matching section and the connecting section, the matching section is matched in the shaft hole, the impeller nut is connected with the fastening section, the shaft hole is provided with a first shaft hole end surface close to the connecting section and a second shaft hole end surface close to the fastening section, an adjusting washer is arranged between the connecting section and the end face of the first shaft hole, a first flexible graphite washer is arranged between the adjusting washer and the abutting end face, and a second flexible graphite washer is arranged between the adjusting washer and the end face of the first shaft hole, and a third flexible graphite washer is arranged between the lower end face of the impeller nut and the end face of the second shaft hole.
Further, the adjusting washer is provided with a step hole matched with the abutting end face.
Further, the lower end edge of the impeller nut extends outwards to form a connecting portion, the connecting portion is abutted to the end face of the second shaft hole, and the third flexible graphite gasket is arranged between the connecting portion and the end face of the second shaft hole.
Further, the shaft hole and the matching section are connected through keys.
Further, the fastening section is provided with an external thread, and the impeller nut is provided with an internal thread matched with the external thread.
The utility model provides a sealing structure for the matching part of an impeller and a shaft of an oil slurry pump, which comprises an impeller, a pump shaft and an impeller nut, wherein the connecting section of the pump shaft is connected with a power source, the matching section of the pump shaft is matched and connected with the shaft hole of the impeller so as to drive the impeller to rotate through the pump shaft, the fastening section of the pump shaft is fastened through the impeller nut, an adjusting gasket is arranged between the connecting section and the end surface of a first shaft hole, a first flexible graphite gasket is arranged between the adjusting gasket and the butt end surface, a second flexible graphite gasket is arranged between the adjusting gasket and the end surface of the first shaft hole, a third flexible graphite gasket is arranged between the lower end surface of the impeller nut and the end surface of a second shaft hole, thus, the flexible graphite gaskets are arranged between the matching surfaces of the pump shaft and the shaft hole, thereby sealing all the matching surfaces with leakage through the flexible, the flexible graphite gasket has the advantages of good sealing effect, compact structure, good corrosion resistance, high/low temperature resistance, good compression resilience and high strength, can meet the requirement that the impeller works in various environments, is less limited and has strong adaptability.
Drawings
Fig. 1 is the utility model discloses in embodiment's oil slurry pump impeller and axle cooperation department seal structure's structural schematic.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure, 1, impeller; 2. an adjusting washer; 3. a pump shaft; 4. a first flexible graphite gasket 5, a second flexible graphite gasket; 6. a key; 7. an impeller nut; 8. a third flexible graphite gasket; 9. a stepped bore; 10. abutting the end face; 11. a connecting portion; 31. a connecting section; 32. a mating segment; 33. and a fastening section.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-2, schematically showing a sealing structure at the matching position of an impeller and a shaft of an oil slurry pump according to an embodiment of the present invention, the sealing structure comprises an impeller 1, a pump shaft 3 and an impeller nut 7, wherein the impeller 1 is provided with a shaft hole, the pump shaft 3 comprises a connecting section 31, cooperation section 32 and fastening section 33, be equipped with butt joint terminal surface 10 between cooperation section 32 and the linkage segment 31, cooperation section 32 cooperates in the shaft hole, impeller nut 7 is connected with fastening section 33, the shaft hole has the first shaft hole terminal surface that is close to linkage segment 31 and is close to the second shaft hole terminal surface of fastening section 33, be equipped with adjusting washer 2 between linkage segment 31 and the first shaft hole terminal surface, be equipped with first flexible graphite packing ring 4 between adjusting washer 2 and the butt joint terminal surface 10, be equipped with second flexible graphite packing ring 5 between adjusting washer 2 and the first shaft hole terminal surface, be equipped with third flexible graphite packing ring 8 under impeller nut 7 between terminal surface and the second shaft hole terminal surface.
Specifically, a connecting section 31 of the pump shaft 3 is connected with a power source, a matching section 32 of the pump shaft 3 is connected with a shaft hole of the impeller 1 in a matching way so as to drive the impeller 1 to rotate through the pump shaft 3, a fastening section 33 of the pump shaft 3 is fastened through an impeller nut 7, an adjusting gasket 2 is arranged between the connecting section 31 and the first shaft hole end face, a first flexible graphite gasket 4 is arranged between the adjusting gasket 2 and the abutting end face 10, a second flexible graphite gasket 5 is arranged between the adjusting gasket 2 and the first shaft hole end face, and a third flexible graphite gasket 8 is arranged between the lower end face of the impeller nut 7 and the second shaft hole end face, so that flexible graphite gaskets are arranged between the pump shaft 3 and each matching surface of the shaft hole, all matching surfaces with leakage are sealed through the flexible graphite gaskets, a medium can be effectively prevented from entering the shaft hole of the impeller 1 and the impeller nut 7, and the sealing, the flexible graphite gasket has the advantages of compact structure, good corrosion resistance, high/low temperature resistance, good compression resilience and high strength, can meet the requirement that the impeller 1 works in various environments, and is less limited and stronger in adaptability.
Further, the adjustment washer 2 is provided with a stepped hole 9 matching the abutting end face 10, so that the abutting end face 10 of the connection section 31 of the pump shaft 3 can be mounted in the stepped hole 9, thereby preventing foreign substances from entering into the shaft hole, and further enhancing the sealing effect.
In this embodiment, the lower extreme edge of impeller nut 7 extends outwards and forms connecting portion 11, connecting portion 11 and second shaft hole terminal surface butt, and third flexible graphite packing ring 8 is located between connecting portion 11 and the second shaft hole terminal surface, thereby shelters from the shaft hole through setting up connecting portion 11 accessible connecting portion 11, guarantees through connecting portion 11 butt that the medium can keep apart in the shaft hole better on the second shaft hole terminal surface, then sealed the enhancement of rethread third flexible graphite packing ring 8.
Preferably, the shaft bore is keyed 6 to the mating segment 32 to provide circumferential fixation for transmitting motion and torque.
In this embodiment, fastening section 33 is equipped with the external screw thread, and impeller nut 7 is equipped with the internal thread that matches with the external screw thread, and impeller nut 7 realizes through the cooperation of internal thread and external screw thread and the fastening of being connected between section 33 of pump shaft 3, but also convenient to detach is favorable to using, installation, inspection and processing.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (5)
1. A sealing structure at the matching part of an impeller and a shaft of an oil slurry pump is characterized by comprising the impeller, a pump shaft and an impeller nut, the impeller is provided with a shaft hole, the pump shaft comprises a connecting section, a matching section and a fastening section, a butt end face is arranged between the matching section and the connecting section, the matching section is matched in the shaft hole, the impeller nut is connected with the fastening section, the shaft hole is provided with a first shaft hole end surface close to the connecting section and a second shaft hole end surface close to the fastening section, an adjusting washer is arranged between the connecting section and the end face of the first shaft hole, a first flexible graphite washer is arranged between the adjusting washer and the abutting end face, and a second flexible graphite washer is arranged between the adjusting washer and the end face of the first shaft hole, and a third flexible graphite washer is arranged between the lower end face of the impeller nut and the end face of the second shaft hole.
2. The slurry pump impeller and shaft mating seal structure of claim 1, wherein said spacer washer is provided with a stepped bore that mates with said abutting end face.
3. The seal structure for the fit of the impeller and the shaft of the slurry pump according to claim 2, wherein the lower end edge of the impeller nut extends outwards to form a connecting portion, the connecting portion abuts against the end face of the second shaft hole, and the third flexible graphite washer is arranged between the connecting portion and the end face of the second shaft hole.
4. The seal structure of the matching part of the impeller and the shaft of the oil slurry pump as claimed in claim 3, wherein the shaft hole is in key connection with the matching section.
5. The seal structure for the fit of the impeller and the shaft of the slurry pump according to claim 3, wherein the fastening section is provided with an external thread, and the impeller nut is provided with an internal thread matching the external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020076766.9U CN211343469U (en) | 2020-01-15 | 2020-01-15 | Sealing structure at matching position of impeller and shaft of oil slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020076766.9U CN211343469U (en) | 2020-01-15 | 2020-01-15 | Sealing structure at matching position of impeller and shaft of oil slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343469U true CN211343469U (en) | 2020-08-25 |
Family
ID=72093175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020076766.9U Active CN211343469U (en) | 2020-01-15 | 2020-01-15 | Sealing structure at matching position of impeller and shaft of oil slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343469U (en) |
-
2020
- 2020-01-15 CN CN202020076766.9U patent/CN211343469U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |