CN206539532U - A kind of machine seals axle sleeve - Google Patents
A kind of machine seals axle sleeve Download PDFInfo
- Publication number
- CN206539532U CN206539532U CN201621447077.4U CN201621447077U CN206539532U CN 206539532 U CN206539532 U CN 206539532U CN 201621447077 U CN201621447077 U CN 201621447077U CN 206539532 U CN206539532 U CN 206539532U
- Authority
- CN
- China
- Prior art keywords
- machine
- axle sleeve
- pump shaft
- machine envelope
- ring seal
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Axle sleeve is sealed the utility model discloses a kind of machine, centrifugal pump includes pump shaft, machine envelope axle sleeve is set in outside pump shaft, it is characterized in that the machine envelope sleeve lining front end sets internal thread, sleeve lining, which is sealed, in the machine does not set the position of internal thread provided with O-ring seal groove, the pump shaft is provided with the external screw thread that sleeve lining screw-internal thread fit is sealed with machine, and O-ring seal is set between pump shaft and machine envelope axle sleeve, and the O-ring seal is located at machine and sealed in the O-ring seal groove of sleeve lining.Advantage of the present utility model：The mechanical seal type that machine envelope axle sleeve is applicable is added, parts count and processing capacity is reduced, reduces influence of the keyway to pump shaft intensity, increase the dismounting length of mechanical seal so that the dismounting of mechanical seal is more convenient.
Description
Technical field
The utility model is related to centrifugal pump field, and in particular to a kind of machine seals axle sleeve.
Background technology
In all kinds of centrifugal pumps, the application of machine envelope axle sleeve is extremely wide.Mechanical seal because its dependable performance, leakage rate are few,
It is service life length, low in energy consumption and be widely used among all kinds of centrifugal pumps.Centrifugal pump is in initial designs and production application
In, the abrasion in order to avoid mechanical sealing linkage ring to pump shaft typically can seal axle sleeve by fitting machine between mechanical seal and pump shaft.Peace
Installation envelope axle sleeve not only shields to pump shaft, it is to avoid the abrasion of pump shaft, and changes also more convenient during mechanical seal.
Conventional mechanical seal is generally common single mechanical end face seal, and the scheme of installation of machine envelope axle sleeve is as shown in Figure 1.
1st, pump shaft, 2, existing machine envelope axle sleeve, 3, mechanical seal, 4, the pump housing, 5, machine sealed cover, 6, machine sealing flushing pipe joint,
7th, pressure ring, 8, round nut, 9, tumbler.
Conventional machine envelope axle sleeve structure schematic diagram is as shown in Figure 2.
Machine envelope axle sleeve 2 when mounted, mounting O-shaped sealing ring is aided in by pressure ring 7, the axial restraint of part is by circle
Nut 8 is fixed.Mechanical sealing linkage ring is engaged with sleeve outer circle surface, and the abrasion of pump shaft is avoided in pump operation.
This structure has the following disadvantages：
Need processing parts count it is more, mating surface is more between part, and requirement on machining accuracy is higher；
Axially dismounting space is small, relatively difficult during dismounting mechanical seal；
This machine envelope axle sleeve is not suitable for installing integrated mechanical sealing.
The content of the invention
The purpose of this utility model is to provide a kind of machine envelope axle sleeve, the structure that existing machine seals axle sleeve is improved, made
Mechanical seal is more secure in the process of running for pump, while effectively solution processing part is more and mechanical seal scene dismounts difficulty
The problems such as.
To achieve these goals, the technical solution of the utility model is：A kind of machine seals axle sleeve, and centrifugal pump includes pump shaft,
Machine envelope axle sleeve is set in outside pump shaft, it is characterised in that the machine envelope sleeve lining front end sets internal thread, and axle sleeve is sealed in the machine
The position that inwall does not set internal thread is provided with O-ring seal groove, and the pump shaft is provided with seals the outer of sleeve lining screw-internal thread fit with machine
Screw thread, sets O-ring seal, the O-ring seal is located at the O-ring seal that machine seals sleeve lining between pump shaft and machine envelope axle sleeve
In groove.
According to preferred embodiment of the present utility model, the machine envelope axle sleeve is internally provided with a reducing step, machine envelope axle sleeve
Internal diameter on front side of reducing step is more than the internal diameter on rear side of reducing step, is located in machine envelope axle sleeve on front side of reducing step
Inwall set internal thread, the first O-ring seal groove is provided with the position of reducing step, the machine envelope axle sleeve close to interior spiral shell
The position of the corresponding other end of line is provided with the second O-ring seal groove.
According to preferred embodiment of the present utility model, integrated mechanical sealing, the packaging are arranged outside the machine envelope axle sleeve
The inwall of formula mechanical seal sets seal groove, and the front end of the integrated mechanical sealing also sets up organic sealed cover, the machine envelope
Gland is bolted on the front end of integrated mechanical sealing.
According to preferred embodiment of the present utility model, one end of the machine envelope axle sleeve extends to the machine envelope installation step of pump shaft
Place, the other end extends to the position that pump shaft installs tumbler.
Machine envelope axle sleeve of the present utility model screws to pump shaft corresponding external thread section, axial restraint when mounted, directly
Round nut is saved, radially fixed save saves pressure ring at key, mounting O-shaped sealing ring.Mechanical seal had so both been added to seal in machine
Installation length on axle sleeve, increases dismounting space, while reducing parts count again, reduces processing capacity, reduces keyway pair
The influence of pump shaft intensity.Advantage of the present utility model：The mechanical seal type that machine envelope axle sleeve is applicable is added, part is reduced
Number and processing capacity, reduce influence of the keyway to pump shaft intensity, increase the dismounting length of mechanical seal so that mechanical seal
Dismounting it is more convenient.
Brief description of the drawings
Fig. 1 seals the scheme of installation of axle sleeve for the machine of prior art.
Fig. 2 seals the structural representation of axle sleeve for the machine of prior art.
Fig. 3 is the scheme of installation that machine of the present utility model seals axle sleeve.
Fig. 4 is the structural representation that machine of the present utility model seals axle sleeve.
Figure includes：
1st, pump shaft, 2, existing machine envelope axle sleeve, 3, mechanical seal, 4, the pump housing, 5, machine sealed cover, 6, machine sealing flushing pipe joint,
7th, pressure ring, 8, round nut, 9, tumbler, 10, machine envelope axle sleeve, 11, integrated form mechanical seal, 12, internal thread, 13, first is O-shaped close
Seal groove, the 14, second O-ring seal groove.
Embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
As illustrated, a kind of machine envelope axle sleeve, centrifugal pump includes pump shaft 1, machine envelope axle sleeve 10 is set in outside pump shaft 1, its feature
It is that the machine envelope axle sleeve 10 inwall front end sets internal thread 12, middle part sets O-ring seal groove, and the pump shaft is provided with seals axle with machine
The external screw thread of 10 inwall internal threads 12 cooperation is covered, O-ring seal, the O-ring seal are set between pump shaft 1 and machine envelope axle sleeve 10
Sealed positioned at machine in the O-ring seal groove of sleeve lining.
According to preferred embodiment of the present utility model, the machine envelope axle sleeve is internally provided with a reducing step, machine envelope axle sleeve
Internal diameter on front side of reducing step is more than the internal diameter on rear side of reducing step, is located in machine envelope axle sleeve on front side of reducing step
Inwall set internal thread, the first O-ring seal groove 13 is provided with the position of reducing step, the machine envelope axle sleeve close to it is interior
The position of the corresponding other end of screw thread is provided with the second O-ring seal groove 14, correspondingly, and one section of flange, flange are set on pump shaft
On be provided with external screw thread, the internal diameter that external diameter and machine the envelope axle sleeve of flange are located on front side of step is corresponding, and the pump shaft on rear side of flange
External diameter is corresponding with the internal diameter that machine envelope axle sleeve is located on rear side of step, installs and is provided between positioning end face and flange in the machine envelope of pump shaft
Groove.
According to preferred embodiment of the present utility model, integrated mechanical sealing 11, the collection are arranged outside the machine envelope axle sleeve
The inwall of dress formula mechanical seal 11 sets seal groove, and the front end of the integrated mechanical sealing 11 also sets up organic sealed cover, institute
The machine sealed cover of stating is bolted on the front end of integrated mechanical sealing.
According to preferred embodiment of the present utility model, one end of the machine envelope axle sleeve 10 extends to the machine envelope installation of pump shaft 1
End is positioned, the other end extends to the position that pump shaft installs tumbler 9.
Internal thread is processed into the utility model machine envelope axle sleeve front end, and pars intermedia separates O-ring seal groove, and sleeve length can add
Grow to remaining tumbler on pump shaft.The utility model machine envelope axle sleeve screws to pump shaft corresponding external screw thread when mounted, directly
Section, axial restraint saves round nut, and radially fixed save saves pressure ring at key, mounting O-shaped sealing ring.So both add machinery
The installation length on machine envelope axle sleeve is sealed in, dismounting space is increased, while reducing parts count again, processing capacity is reduced.This
Machine envelope axle sleeve is applicable not only to conventional common single mechanical end face seal, while being also applied for the larger collection of axial installation dimension
Dress formula mechanical seal.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the utility model specific implementation is confined to these above-mentioned explanations.For the common skill of the utility model art
For art personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should
It is considered as belonging to protection domain of the present utility model.
Claims (4)
1. a kind of machine seals axle sleeve, centrifugal pump includes pump shaft, and machine envelope axle sleeve is set in outside pump shaft, it is characterised in that the machine seals axle sleeve
Inwall front end sets internal thread, and sealing sleeve lining in the machine does not set the position of internal thread provided with O-ring seal groove, the pump shaft
Provided with the external screw thread that sleeve lining screw-internal thread fit is sealed with machine, O-ring seal is set between pump shaft and machine envelope axle sleeve, it is described O-shaped
Sealing ring is located at machine and sealed in the O-ring seal groove of sleeve lining.
2. machine as claimed in claim 1 seals axle sleeve, it is characterised in that the machine envelope axle sleeve is internally provided with a reducing step,
Machine envelope axle sleeve is located at the internal diameter that the internal diameter on front side of reducing step is more than on rear side of reducing step, is located at reducing platform in machine envelope axle sleeve
Inwall on front side of rank sets internal thread, and the first O-ring seal groove is provided with the position of reducing step, is leaned in machine envelope axle sleeve
The position of the other end closely corresponding with internal thread is provided with the second O-ring seal groove.
3. machine as claimed in claim 1 seals axle sleeve, it is characterised in that be arranged integrated mechanical sealing outside the machine envelope axle sleeve,
The inwall of the integrated mechanical sealing sets seal groove, and the front end of the integrated mechanical sealing also sets up organic sealed cover,
The machine sealed cover is bolted on the front end of integrated mechanical sealing.
4. machine as claimed in claim 1 seals axle sleeve, it is characterised in that one end of the machine envelope axle sleeve extends to the machine envelope of pump shaft
At installation step, the other end extends to the position that pump shaft installs tumbler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621447077.4U CN206539532U (en) | 2016-12-27 | 2016-12-27 | A kind of machine seals axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621447077.4U CN206539532U (en) | 2016-12-27 | 2016-12-27 | A kind of machine seals axle sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206539532U true CN206539532U (en) | 2017-10-03 |
Family
ID=59938059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621447077.4U Expired - Fee Related CN206539532U (en) | 2016-12-27 | 2016-12-27 | A kind of machine seals axle sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206539532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210196A (en) * | 2018-11-09 | 2019-01-15 | 昆山密友机械密封有限公司 | The Hermetical connecting structure of high-temperature service mechanical shaft seal axle sleeve |
-
2016
- 2016-12-27 CN CN201621447077.4U patent/CN206539532U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210196A (en) * | 2018-11-09 | 2019-01-15 | 昆山密友机械密封有限公司 | The Hermetical connecting structure of high-temperature service mechanical shaft seal axle sleeve |
| CN109210196B (en) * | 2018-11-09 | 2024-04-16 | 昆山密友机械密封有限公司 | Sealing connection structure of mechanical shaft sealing shaft sleeve of high-temperature equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20211227 |