CN208057511U - A kind of impeller intake dynamic sealing device of New Centrifugal Pump - Google Patents
A kind of impeller intake dynamic sealing device of New Centrifugal Pump Download PDFInfo
- Publication number
- CN208057511U CN208057511U CN201820178671.0U CN201820178671U CN208057511U CN 208057511 U CN208057511 U CN 208057511U CN 201820178671 U CN201820178671 U CN 201820178671U CN 208057511 U CN208057511 U CN 208057511U
- Authority
- CN
- China
- Prior art keywords
- choma
- centrifugal pump
- sealing device
- dynamic sealing
- stage casing
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 17
- 210000004907 Glands Anatomy 0.000 claims abstract description 23
- 230000037250 Clearance Effects 0.000 claims abstract description 5
- 230000035512 clearance Effects 0.000 claims abstract description 5
- 230000002093 peripheral Effects 0.000 claims abstract description 3
- 210000003027 Ear, Inner Anatomy 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000003754 machining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The utility model is related to a kind of impeller intake dynamic sealing devices of New Centrifugal Pump, the device is set between impeller and the stage casing of the pump housing, include set on outer peripheral first choma of wheel bottom and set on the second choma of stage casing inner surface edge, first choma and the second choma clearance fit, the stage casing is equipped with gland, annular Wear resistance disk is equipped between the gland and stage casing, the annular Wear resistance disk is set on the first choma.Compared with prior art, the utility model has many advantages, such as to reduce processing cost, prevents leakage.
Description
Technical field
The utility model is related to centrifugal pump device design field, more particularly, to a kind of impeller of New Centrifugal Pump into
Mouth of a river dynamic sealing device.
Background technology
Currently, the choma part (lateral surface of water inlet) of the impeller intake of existing centrifugal pump and the pump housing (single-stage from
Heart pump) or need to keep with the choma part (medial surface of water inlet) in stage casing, inlet segment (centrifugal multistage pump multiple centrifugal pump) gap (one of very little
As be less than 0.2 millimeter), if gap is big, when centrifuging pump operation, the hydraulic pressure in pump chamber can pass through this clearance backflow to the upper of pump
The import (single-stage pump) of level-one (multistage pump) or pump causes the flow of pump to reduce, pressure decline, the efficiency of pump is made to reduce.If needing
So small gap is kept, then the requirement of the concentricity of each parts of centrifugal pump is very high, is wanted to what is processed and assemble
It asks very high, otherwise can cause, since concentricity is bad, impeller to be caused with the pump housing or stage casing, inlet segment to occur when centrifuging pump operation
It rubs and water pump is caused to damage.And if without keeping smaller gap, the difficulty of the processing of each parts, but meeting can be reduced
There is the leakage become apparent.
Utility model content
The purpose of this utility model is exactly to provide a kind of novel centrifugal to overcome the problems of the above-mentioned prior art
The impeller intake dynamic sealing device of pump.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of impeller intake dynamic sealing device of New Centrifugal Pump, the device are set between impeller and the stage casing of the pump housing,
Include set on outer peripheral first choma of wheel bottom and set on the second choma of stage casing inner surface edge, first choma
With the second choma clearance fit, the stage casing is equipped with gland, and annular Wear resistance disk, institute are equipped between the gland and stage casing
The annular Wear resistance disk stated is set on the first choma.
Preferably, the annular Wear resistance disk is polytetrafluoroethylene (PTFE) annular Wear resistance disk.
Preferably, the thickness of the annular Wear resistance disk is 4mm.
Preferably, the inner circle size of the gland is identical as the inner circle size of the second choma.
Preferably, the lower surface of the gland is equipped with a plurality of first groove.
Preferably, the upper surface in the stage casing is equipped with size and quantity the second groove identical with the first groove.
Preferably, second groove is correspondingly arranged with the first groove, and fan is formed between the second groove and the first groove
Palace channel.
Preferably, it after the annular Wear resistance disk is set in the first choma, is set in labyrinth channel.
Preferably, the depth of first groove is 0.3mm, width 0.4mm.
Preferably, the gland and stage casing are affixed by multiple screws.
Compared with prior art, the utility model has the following advantages：
1, it is equipped with gland between the second choma on the first choma of the utility model on impeller and stage casing and annular is resistance to
Mill, annular Wear resistance disk are set on the first choma so that almost gapless between the first choma and the second choma can prevent water
The import (single-stage pump) for pushing back the upper level (multistage pump) for flowing to pump or pump, because same when avoiding due to each parts machining or assembly
Heart degree is bad, and when pump operation causes impeller to cause water pump to damage there is a phenomenon where friction with the pump housing or stage casing, inlet segment and occur,
Greatly reduce processing cost；
2, corresponding between a plurality of first groove with the second groove of stage casing upper surface of the gland lower surface of the utility model
Setting, forms labyrinth channel, and labyrinth channel increases the resistance of water, reduces hydraulic pressure, prevents from revealing.
Description of the drawings
Fig. 1 is the structural schematic diagram of utility model device；
Fig. 2 is the main structure diagram in stage casing in the utility model；
Fig. 3 is the overlooking structure diagram in stage casing in the utility model；
Fig. 4 is the main structure diagram of annular Wear resistance disk in the utility model；
Fig. 5 is the overlooking structure diagram of annular Wear resistance disk in the utility model；
Fig. 6 is the main structure diagram of gland in the utility model；
Fig. 7 is the overlooking structure diagram of gland in the utility model；
Shown in figure label：
1, impeller, the 101, first choma, 2, stage casing, the 201, second choma, the 202, second groove, 3, screw, 4, gland,
401, the first groove, 5, annular Wear resistance disk.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment
The utility model is related to a kind of impeller intake dynamic sealing devices of New Centrifugal Pump, including impeller 1, stage casing 2,
One choma 101, the second choma 201, gland 4 and annular Wear resistance disk 5.First choma 101 be set to 1 bottom outer edge of impeller, second
Choma 201 is set at the inner surface edge in stage casing 2,201 clearance fit of the first choma 101 and the second choma；Gland 4 and stage casing 2
Affixed by six screws 3, annular Wear resistance disk 5 is set between gland 4 and stage casing 2, and is set on the first choma 101.
The inner circle size of gland 4 is identical as the inner circle size of the second choma 201.The lower surface of gland 4 is equipped with a plurality of first
The upper surface of groove 401, stage casing 2 is equipped with a plurality of second groove 202, the quantity of the quantity of the first groove 401 and the second groove 202
And size is identical, the depth of the two is 0.3mm, width 0.4mm.First groove 401 is correspondingly arranged with the second groove 202, is made
Therebetween the labyrinth channel with multiple runners is formed.The material of annular Wear resistance disk 5 is polytetrafluoroethylene (PTFE) annular Wear resistance disk, thick
Degree is 4mm, after annular Wear resistance disk 5 is set on the first choma 101, is set in labyrinth channel.
Using the utility model centrifugal pump at work, gland 4 and the cooperation of annular Wear resistance disk 5 make the first choma
101 and second be almost gap before choma 201, can prevent hydraulic pressure from flowing back into the import of the upper level (multistage pump) or pump of pump
(single-stage pump), but because concentricity is bad when being avoided that due to each parts machining or assembly, when pump operation, leads to impeller 1 and the pump housing
Or stage casing, inlet segment cause water pump to damage and occur there is a phenomenon where friction, to improve water pump service life, add to reduce
Work and maintenance maintenance cost.Meanwhile annular Wear resistance disk 5 is set in labyrinth flow-path, it can be each because of labyrinth into the water in labyrinth channel
The drag effect of a runner and reduce hydraulic pressure, leakage phenomenon can be further prevented, have high use value.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any staff for being familiar with the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (10)
1. a kind of impeller intake dynamic sealing device of New Centrifugal Pump, which is set between impeller and the stage casing of the pump housing, packet
Include be set to outer peripheral first choma of wheel bottom and the second choma set on stage casing inner surface edge, first choma with
Second choma clearance fit, which is characterized in that the stage casing is equipped with gland, and annular is equipped between the gland and stage casing
Wear resistance disk, the annular Wear resistance disk are set on the first choma.
2. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 1, which is characterized in that described
Annular Wear resistance disk be polytetrafluoroethylene (PTFE) annular Wear resistance disk.
3. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 2, which is characterized in that described
Annular Wear resistance disk thickness be 4mm.
4. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 1, which is characterized in that described
Gland inner circle size it is identical as the inner circle size of the second choma.
5. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 1, which is characterized in that described
Gland lower surface be equipped with a plurality of first groove.
6. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 5, which is characterized in that described
Stage casing upper surface be equipped with size and quantity the second groove identical with the first groove.
7. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 6, which is characterized in that described
The second groove be correspondingly arranged with the first groove, form labyrinth channel between the second groove and the first groove.
8. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 7, which is characterized in that described
Annular Wear resistance disk be set in the first choma after, be set to labyrinth channel in.
9. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 5, which is characterized in that described
The first groove depth be 0.3mm, width 0.4mm.
10. a kind of impeller intake dynamic sealing device of New Centrifugal Pump according to claim 1, which is characterized in that institute
The gland stated is affixed by multiple screws with stage casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178671.0U CN208057511U (en) | 2018-02-01 | 2018-02-01 | A kind of impeller intake dynamic sealing device of New Centrifugal Pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178671.0U CN208057511U (en) | 2018-02-01 | 2018-02-01 | A kind of impeller intake dynamic sealing device of New Centrifugal Pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057511U true CN208057511U (en) | 2018-11-06 |
Family
ID=63992989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820178671.0U Expired - Fee Related CN208057511U (en) | 2018-02-01 | 2018-02-01 | A kind of impeller intake dynamic sealing device of New Centrifugal Pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057511U (en) |
-
2018
- 2018-02-01 CN CN201820178671.0U patent/CN208057511U/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: 20181106 Termination date: 20220201 |