CN204299939U - Pump hermetically-sealed construction - Google Patents
Pump hermetically-sealed construction Download PDFInfo
- Publication number
- CN204299939U CN204299939U CN201420666043.9U CN201420666043U CN204299939U CN 204299939 U CN204299939 U CN 204299939U CN 201420666043 U CN201420666043 U CN 201420666043U CN 204299939 U CN204299939 U CN 204299939U
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- CN
- China
- Prior art keywords
- pump
- ring
- stationary ring
- throw
- sealed construction
- 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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Abstract
This patent application discloses a kind of pump hermetically-sealed construction, comprise pump shaft and be coated at the axle sleeve on pump shaft, wherein, also comprise the stage clip between the pump housing and axle sleeve, spring base, throw-out collar, rotating ring and stationary ring, described stage clip one end is fixed on the pump housing by spring base, the other end and throw-out collar offset, and described throw-out collar, rotating ring and stationary ring offset in turn, and described stationary ring is by the stop pin location on the pump housing.Pump hermetically-sealed construction good seal performance of the present utility model, working stability, and also wearing and tearing are less.
Description
Technical field
The utility model relates to a kind of axle sealing structure, is specifically related to a kind of pump hermetically-sealed construction.
Background technology
It is reducing agent with coke blacking that low iron akali sulphide is produced main, and adopting containing chromium saltcake and dehydration saltcake is raw material manufacture.Production process mainly comprises upper material process of getting the raw materials ready, calcination process, change base washery slag operation, precipitates and wash bricklayer's's sequence, low iron akali sulphide liquid operation, evaporization process, film-making packaging process.
Change base washery slag operation, precipitate and wash in bricklayer's's sequence containing more undissolved akali sulphide, so usually use sewage pump pumping, this sewage pump is generally one step single sucking cantilever horizontal centrifugal pump, adopt the better soft packing seal of wearability, its structure as shown in Figure 1, comprises axle sleeve 1, the pump housing 2, base ring 3, lantern ring for liquid seal 4, soft packing 5 and gland 6, during normal work, inlet pressure is normal pressure, outlet pressure is 0.45MPa, and medium temperature is normal temperature, and rotating speed is 1450r/min.Although have sealing liquid entrance, because scene does not have clean water, so there is no adopt sealing liquid to carry out lubrication to sealing.
By analysis, there is following defect in this wadding seal structure: the impurity that a. sealing medium contains has a strong impact on sealing property.Impurity enters soft packing 5 sealed inside, further increases the friction between packing seal and axle sleeve 1, wearing and tearing.Although material wear ability is better, result of use is still not good, leaks frequent.
B. unstable working condition needs frequent adjustment and changes filler.Due to the viscous-elastic behaviour that soft packing 5 has self, there will be obvious stress relaxation down in working order.For keeping its normal sealing function, the radial contact force of filler and axle constantly need be increased by compressing gland 6, also increase the wearing and tearing of soft packing 5 and axle, therefore have to often change (or interpolation) filler, maintenance load and expense increase greatly simultaneously.
C. serious wear causes energy input large.According to the working mechanism of soft packing seal, a larger radial contact must be kept between packing seal and axle (or axle sleeve 1) to seal to maintain, therefore filler and axle (or axle sleeve 1) friction, wearing and tearing all very serious, while ability is lost the job in sealing very soon, sizable energy consumption is caused to waste.
Utility model content
For the defect that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of good seal performance, working stability, and the pump hermetically-sealed construction that wearing and tearing are less.
For achieving the above object, the technical solution of the utility model is:
Pump hermetically-sealed construction, comprise pump shaft and be coated at the axle sleeve on pump shaft, wherein, also comprise the stage clip between the pump housing and axle sleeve, spring base, throw-out collar, rotating ring and stationary ring, described stage clip one end is fixed on the pump housing by spring base, the other end and throw-out collar offset, and described throw-out collar, rotating ring and stationary ring offset in turn, and described stationary ring is by the stop pin location on the pump housing.
When adopting technique scheme, stage clip one end is fixed on the pump housing by spring base, the other end and throw-out collar offset, and described throw-out collar, rotating ring and stationary ring offset in turn, and such stage clip just can make to keep between rotating ring and stationary ring fitting tightly, and rotating ring rotates relative to stationary ring, form seal face between the two, adopt spring rotary structure can prevent impurity spring blocking from making it lose buffering and compensating action, larger axial deformation can be born simultaneously, so working stability, and can increase the service life; Adopt stage clip to make rotating ring and stationary ring keep balance, this balanced structure can bear certain pressure medium fluctuation, good sealing effect.
Further, stationary ring auxiliary seal ring is provided with between described stationary ring and axle sleeve.Medium in annular seal space can enter in the cylinder of spring base, and the stationary ring auxiliary seal ring between rotating ring and axle sleeve can prevent from leaking between medium driven torus and axle sleeve effectively.
Further, rotating ring auxiliary seal ring is provided with between described rotating ring and the pump housing.Medium in annular seal space can enter the gap between stationary ring and the pump housing, and the rotating ring auxiliary seal ring between rotating ring and the pump housing then can prevent dielectric leakage.
Further, described spring base is with cylindrical shape, and described stage clip is positioned at cylinder, and cylinder can reduce the distortion of stage clip in radial direction.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of hermetically-sealed construction embodiment in prior art;
Fig. 2 is the schematic diagram of the utility model pump hermetically-sealed construction embodiment.
Detailed description of the invention
Below by detailed description of the invention, the utility model is described in further detail:
As shown in Figure 2, a kind of pump hermetically-sealed construction, comprise pump shaft and be coated at the axle sleeve 1 on pump shaft, wherein, also comprise the stage clip 4 between the pump housing and axle sleeve 1, spring base 2, throw-out collar 5, rotating ring and stationary ring 8, stage clip 4 one end is fixed on the pump housing by spring base 2, and the other end and throw-out collar 5 offset, throw-out collar 5, rotating ring and stationary ring 8 offsets in turn, and stationary ring 8 is located by the stop pin 10 on the pump housing.
In the present embodiment, between stationary ring 8 and axle sleeve 1, be provided with stationary ring auxiliary seal ring 9.Medium in annular seal space can enter in the cylinder of spring base 2, and the stationary ring auxiliary seal ring 9 between rotating ring and axle sleeve 1 can prevent from leaking between medium driven torus and axle sleeve 1 effectively.
Rotating ring 76 is provided with between rotating ring and the pump housing.Medium in annular seal space can enter the gap between stationary ring 8 and the pump housing, and the rotating ring 76 between rotating ring and the pump housing then can prevent dielectric leakage.
Spring base 2 is with cylindrical shape, and stage clip 4 is positioned at cylinder, and cylinder can reduce the distortion of stage clip 4 in radial direction.
Specific works principle:
As shown in Figure 2, stage clip 4 one end is fixed on the pump housing by spring base 2, the other end and throw-out collar 5 offset, throw-out collar 5, rotating ring and stationary ring 8 offsets in turn, such stage clip 4 just can make to keep between rotating ring and stationary ring 8 fitting tightly, and rotating ring rotates relative to stationary ring 8, forms seal face between the two, thus realize sealing.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (4)
1. pump hermetically-sealed construction, comprise pump shaft and be coated at the axle sleeve on pump shaft, it is characterized in that, also comprise the stage clip between the pump housing and axle sleeve, spring base, throw-out collar, rotating ring and stationary ring, described stage clip one end is fixed on the pump housing by spring base, the other end and throw-out collar offset, and described throw-out collar, rotating ring and stationary ring offset in turn, and described stationary ring is by the stop pin location on the pump housing.
2. pump hermetically-sealed construction according to claim 1, is characterized in that, is provided with stationary ring auxiliary seal ring between described stationary ring and axle sleeve.
3. pump hermetically-sealed construction according to claim 1, is characterized in that, is provided with rotating ring auxiliary seal ring between described rotating ring and the pump housing.
4. pump hermetically-sealed construction according to claim 1, is characterized in that, described spring base is with cylindrical shape, and described stage clip is positioned at cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666043.9U CN204299939U (en) | 2014-11-10 | 2014-11-10 | Pump hermetically-sealed construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666043.9U CN204299939U (en) | 2014-11-10 | 2014-11-10 | Pump hermetically-sealed construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299939U true CN204299939U (en) | 2015-04-29 |
Family
ID=53105483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420666043.9U Expired - Fee Related CN204299939U (en) | 2014-11-10 | 2014-11-10 | Pump hermetically-sealed construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224283A (en) * | 2016-08-25 | 2016-12-14 | 浙江南元泵业有限公司 | Vertical mechanical seal for pump |
-
2014
- 2014-11-10 CN CN201420666043.9U patent/CN204299939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224283A (en) * | 2016-08-25 | 2016-12-14 | 浙江南元泵业有限公司 | Vertical mechanical seal for pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |