CN209294116U - Pump mechanical power sealing structure - Google Patents
Pump mechanical power sealing structure Download PDFInfo
- Publication number
- CN209294116U CN209294116U CN201822096308.7U CN201822096308U CN209294116U CN 209294116 U CN209294116 U CN 209294116U CN 201822096308 U CN201822096308 U CN 201822096308U CN 209294116 U CN209294116 U CN 209294116U
- Authority
- CN
- China
- Prior art keywords
- sealing
- pump shaft
- pump
- box shell
- mechanical power
- 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
Links
Abstract
The utility model proposes a kind of pump mechanical power sealing structure, blower inlet casing, sealing box shell and thrust sleeve are successively arranged on pump shaft；The right end of blower inlet casing connects with the left end of sealing box shell, and sets the first sealing ring in joint；Diversion cavity is formed between blower inlet casing and pump shaft, is sealed and is formed seal chamber between box shell and pump shaft, the two connection；The right end of sealing box shell sets static sealing plate, and outer rim is fixed with sealing box shell, and inner edge is resisted against on thrust sleeve backwards to the side of seal chamber；Thrust sleeve is fixed with pump shaft, and the second sealing ring is set between the two；Accessory impeller is set in diversion cavity, is fixed on pump shaft, and third sealing ring is set between accessory impeller and pump shaft.The utility model can play sealing function when pumping static and work, securely and reliably, easy to maintain, long service life, and operating cost is low.
Description
Technical field
The utility model relates to pump body structure technical field, specifically a kind of pump mechanical power sealing structure.
Background technique
In the sealing structure of the pump housing, the import leakage of the intracorporal liquid leakage of centrifugal pump and air from pump body in order to prevent
Into needing to be sealed the gap between rotary shaft and the static pump housing.Traditional sealing means mainly have packing seal, machine
Tool sealing etc..It is passing, because disadvantage is more, to have the gradually trend replaced mechanical seal recently frequently with packing seal, this
Mainly since mechanical seal has good airproof performance, the advantages such as reliable operation, leakage rate is small, and power consumption is low.But it generally deposits
The problem of be that service life is short, replacement trouble, economic pressures are big, and use cost is high.
Utility model content
The utility model proposes a kind of pump mechanical power sealing structures, solve the sealing knot of prior art middle pump body
Service life existing for structure is short, and replacement trouble, economic pressures are big, the high problem of use cost.
The technical solution of the utility model is achieved in that
A kind of pump uses mechanical power sealing structure, including pump shaft, is successively arranged with blower inlet casing, seal box on the pump shaft
Shell and thrust sleeve；
The right end of the blower inlet casing connects with the left end of the sealing box shell, and the first sealing ring is arranged in joint；Institute
It states and forms cricoid diversion cavity between blower inlet casing and the pump shaft, formed between the sealing box shell and the pump shaft cricoid close
Chamber is sealed, the diversion cavity is connected to the seal chamber；
The right end of the sealing box shell is provided with static sealing plate, and the static sealing plate is annular plate, the annular plate
Outer rim is fixed with the sealing box shell, and the inner edge of the annular plate is resisted against on the thrust sleeve backwards to the side of the seal chamber；
The thrust sleeve is fixed with the pump shaft, and the second sealing ring of setting therebetween；
Accessory impeller is provided in the diversion cavity, the accessory impeller is fixed on the pump shaft, and the accessory impeller and institute
State setting third sealing ring between pump shaft.
Further, it is provided with cricoid sealing gland in the outer rim of the static sealing plate, the sealing gland is by institute
The outer rim for stating static sealing plate is pressed together in the sealing box shell.
Further, the inner edge of the static sealing plate has inclined-plane towards the side of the seal chamber.
Further, the diameter of the diversion cavity is greater than the diameter of the seal chamber.
Further, the pump shaft is multi-diameter shaft, and the diameter of the pump shaft in diversion cavity, which is less than, to be located in seal chamber
The diameter of pump shaft；The wheel hub of the accessory impeller is resisted against at the ladder of pump shaft.
Further, the thrust sleeve is fixed on the pump shaft by holding screw.
The utility model has the following beneficial effects:
The design of the utility model structure is simple, easy to use；When the pump is at rest, thrust sleeve connects with static sealing plate
Sealing is realized in touching in pumping under the pressure of fluid；When accessory impeller rotation, fluid is acted on by centrifugal force, in diversion cavity and sealing
Intracavitary formation water ring, seal chamber is interior to form negative pressure, realizes dynamic sealing, while sealing plate is separated with thrust sleeve, avoids wearing.This
Utility model pump it is static and work when can play sealing function, securely and reliably, easy to maintain, long service life, operation at
This is low.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Wherein:
1, pump shaft；2, blower inlet casing；3, box shell is sealed；4, thrust sleeve；5, the first sealing ring；6, diversion cavity；7, seal chamber；8,
Static sealing plate；9, inclined-plane；10, the second sealing ring；11, holding screw；12, accessory impeller；13, third sealing ring；14, sealing pressure
Lid；15, wheel hub；16, plug screw.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the pump mechanical power sealing structure in the present embodiment, including pump shaft 1, on the pump shaft 1 according to
It is secondary to be arranged with blower inlet casing 2, sealing box shell 3 and thrust sleeve 4.
The right end of the blower inlet casing 2 connects with the left end of the sealing box shell 3, and the first sealing ring 5 is arranged in joint；
Cricoid diversion cavity 6 is formed between the blower inlet casing 2 and the pump shaft 1, is formed between the sealing box shell 3 and the pump shaft 1
Cricoid seal chamber 7, the diversion cavity 6 are connected to the seal chamber 7.
The right end of the sealing box shell 3 is provided with static sealing plate 8, and the static sealing plate 8 is annular plate, the annular plate
Outer rim and the sealing box shell 3 fixation, the inner edge of the annular plate is resisted against the thrust sleeve backwards to the side of the seal chamber 7
On 4；In the present embodiment, the inner edge of the static sealing plate 8 has inclined-plane 9 towards the side of the seal chamber 7.The thrust sleeve
4 is fixed with the pump shaft 1, and the second sealing ring 10 of setting therebetween.Here, the thrust sleeve 4 is fixed by holding screw 11
On the pump shaft 1.Plug screw 16 is provided in the sealing box shell 3.
Accessory impeller 12 is provided in the diversion cavity 6, the accessory impeller 12 is fixed on the pump shaft 1, and the accessory lobes
Third sealing ring 13 is set between wheel 12 and the pump shaft 1.
In the present embodiment, cricoid sealing gland 14, the sealing gland are provided in the outer rim of the static sealing plate 8
14 are pressed together on the outer rim of the static sealing plate 8 in the sealing box shell 3.Sealing gland 14, which can be bolted, to be sealed
In box shell 3.
In the present embodiment, the diameter of the diversion cavity 6 is greater than the diameter of the seal chamber 7.The pump shaft 1 is multi-diameter shaft,
The diameter of pump shaft 1 in diversion cavity 6 is less than the diameter for the pump shaft 1 being located in seal chamber 7；The wheel hub 15 of the accessory impeller 12
It is resisted against at the ladder of pump shaft 1.
The present embodiment is in use, when pump remains static, and thrust sleeve 4 and static sealing plate 8 contact, the fluid in pumping
Pressure under, static sealing plate 8 is pressed on 4 end face of thrust sleeve, and the fluid in seal chamber 7 is enclosed, and cannot be revealed, and reaches close
Seal effect；When pumping in running order, pump shaft 1 is rotated, and accessory impeller 12 and thrust sleeve 4 rotate with；Accessory impeller 12 rotates, stream
Body is acted on by centrifugal force, and water ring, while the inner generation negative pressure of seal chamber 7, static sealing plate 8 are formed in seal chamber 7 and diversion cavity 6
Inner edge stress into seal chamber 7 slight inclination, separated with thrust sleeve 4, avoid unnecessary abrasion, while also reached dynamic
The effect of state sealing.The utility model can play sealing function when pumping static and work, securely and reliably, easy to maintain, make
Long with the service life, operating cost is low.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of pump mechanical power sealing structure, which is characterized in that including pump shaft, be successively arranged with water conservancy diversion on the pump shaft
Shell, sealing box shell and thrust sleeve；
The right end of the blower inlet casing connects with the left end of the sealing box shell, and the first sealing ring is arranged in joint；It is described to lead
Cricoid diversion cavity is formed between stream shell and the pump shaft, forms cricoid sealing between the sealing box shell and the pump shaft
Chamber, the diversion cavity are connected to the seal chamber；
The right end of the sealing box shell is provided with static sealing plate, and the static sealing plate is annular plate, the outer rim of the annular plate
It is fixed with the sealing box shell, the inner edge of the annular plate is resisted against on the thrust sleeve backwards to the side of the seal chamber；It is described
Thrust sleeve is fixed with the pump shaft, and the second sealing ring of setting therebetween；
Accessory impeller is provided in the diversion cavity, the accessory impeller is fixed on the pump shaft, and the accessory impeller and the pump
Third sealing ring is set between axis.
2. a kind of pump mechanical power sealing structure as described in claim 1, which is characterized in that the static sealing plate
Cricoid sealing gland is provided in outer rim, the outer rim of the static sealing plate is pressed together on the seal box by the sealing gland
On shell.
3. a kind of pump mechanical power sealing structure as claimed in claim 2, which is characterized in that the static sealing plate
Inner edge has inclined-plane towards the side of the seal chamber.
4. a kind of pump mechanical power sealing structure as claimed in claim 3, which is characterized in that the diameter of the diversion cavity
Greater than the diameter of the seal chamber.
5. a kind of pump mechanical power sealing structure as claimed in claim 4, which is characterized in that the pump shaft is ladder
Axis, the diameter of the pump shaft in diversion cavity are less than the diameter for the pump shaft being located in seal chamber；The wheel hub of the accessory impeller against
At the ladder of pump shaft.
6. a kind of pump mechanical power sealing structure as claimed in claim 5, which is characterized in that the thrust sleeve is by tightening
Screw is fixed on the pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822096308.7U CN209294116U (en) | 2018-12-13 | 2018-12-13 | Pump mechanical power sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822096308.7U CN209294116U (en) | 2018-12-13 | 2018-12-13 | Pump mechanical power sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209294116U true CN209294116U (en) | 2019-08-23 |
Family
ID=67654684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822096308.7U Expired - Fee Related CN209294116U (en) | 2018-12-13 | 2018-12-13 | Pump mechanical power sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209294116U (en) |
-
2018
- 2018-12-13 CN CN201822096308.7U patent/CN209294116U/en not_active Expired - Fee Related
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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: 20190823 Termination date: 20211213 |