CN204283985U - A kind of centrifugal pump impeller choma and casing ring structure - Google Patents
A kind of centrifugal pump impeller choma and casing ring structure Download PDFInfo
- Publication number
- CN204283985U CN204283985U CN201420753542.1U CN201420753542U CN204283985U CN 204283985 U CN204283985 U CN 204283985U CN 201420753542 U CN201420753542 U CN 201420753542U CN 204283985 U CN204283985 U CN 204283985U
- Authority
- CN
- China
- Prior art keywords
- ring
- casing ring
- impeller
- centrifugal pump
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field that centrifugal pump manufactures, and is specifically related to a kind of centrifugal pump impeller choma and casing ring structure.Solve prior art wear resistance not high, quick abrasion, change the technical problems such as frequent.A kind of centrifugal pump impeller choma and casing ring structure, comprise the impeller port ring and casing ring that cooperatively interact, and impeller port ring outer surface interval heap is welded with several Ni60 material layers; Inside surfacing the 2nd Ni60 material layer of casing ring.The utility model adopts high hardness, wear-resisting Ni60 sealing surface and labyrinth seal organically combine, brings out the best in each other, and reaches and reduces casing ring and impeller port ring wearing and tearing, prolongation casing ring and impeller port ring working life, the object of raising water pump volumetric efficiency.Efficiently solve pump to be in operation casing ring and impeller port ring quick abrasion, change problem frequently.
Description
Technical field
The utility model belongs to the technical field that centrifugal pump manufactures, and is specifically related to a kind of centrifugal pump impeller choma and casing ring structure.
Background technique
Traditional centrifugal pump impeller choma and casing ring structure are as shown in Figure 2, impeller port ring is arranged on impeller 8, casing ring is connected with the pump housing 7, have gap between impeller port ring outer surface and seal ring internal surface, impeller port ring and casing ring are generally the materials such as overall cast iron, 45 steel, stainless steel, and its wear resistance is not high, quick abrasion, change frequent, the materials such as stainless steel also can produce adhesion phenomenon in pump operation process, cause the damage of pump.
Summary of the invention
It is not high that the purpose of this utility model overcomes prior art wear resistance exactly, quick abrasion, changes and frequently wait deficiency, design a kind of centrifugal pump impeller choma and casing ring structure.
The utility model adopts following technological scheme to realize: a kind of centrifugal pump impeller choma and casing ring structure, comprise the impeller port ring and casing ring that cooperatively interact, and impeller port ring outer surface interval heap is welded with some articles of Ni60 material layers; Inside surfacing the 2nd Ni60 material layer of casing ring.
The utility model is primarily of the casing ring be fixedly mounted on the pump housing and the impeller port ring composition (see figure 1) be fixedly mounted on impeller.Because of Ni60 material hardness HRC58-62, there is the premium properties such as wear-resisting, anti-corrosion and anti-oxidant, and cost is low, spray welding process performance is good, have certain workability, compares with impeller port ring with the casing ring of cast iron, cast steel, stainless steel material, the life-span can improve several times and even tens times.
Further, the region of impeller port ring outer surface between an adjacent Ni60 material layer all has labyrinth seal groove.
Simultaneously on impeller port ring external diameter, labyrinth seal groove (see Fig. 5) has been cut at two built-up welding Ni60 interannulars, the flow channels that these labyrinth seal grooves make fluid form through a series of throttle clearance and expansion cavity, produce throttle effect, restriction is leaked, this sealing means is without friction, few, the long service life of power consumption, but require that gap is little, when pump operation middle pump body seal ring and impeller port ring rub, make it wear and tear, when gap increases, sealability will be reduced.And after rubbing surface built-up welding Ni60, hardness can reach HRC58-62, working surface roughness, at more than Ra3.2, effectively can reduce the wearing and tearing of sealing surface, keeps gap in more among a small circle.The groove of labyrinth seal simultaneously institute liquid storage body has lubrication again to sealing surface conversely, prevents dry grinding and the scaling loss of casing ring and impeller port ring.
The beneficial effects of the utility model: as previously mentioned, high hardness, wear-resisting Ni60 sealing surface and labyrinth seal groove organically combine, and bring out the best in each other, and reach and reduce casing ring and impeller port ring wearing and tearing, extend casing ring and impeller port ring working life, improve the object of water pump volumetric efficiency.Efficiently solve pump to be in operation casing ring and impeller port ring quick abrasion, change problem frequently.
Accompanying drawing explanation
Fig. 1 the utility model structural representation.
The structural representation of the impeller port ring that Fig. 2 commonly uses at present and casing ring.
Fig. 3 centrifugal pump body seal ring structure described in the utility model schematic diagram.
Fig. 4 impeller port ring structural representation described in the utility model.
Labyrinth seal groove structural representation on Fig. 5 impeller port ring described in the utility model.
1-impeller port ring, 2-casing ring, 3-the one Ni60 material layer, 4-the 2nd Ni60 material layer, 5-labyrinth seal groove, 6-endoporus, the 7-pump housing, 8-impeller.
Embodiment
A kind of centrifugal pump impeller choma and casing ring structure, comprise the impeller port ring 1 and casing ring 2 that cooperatively interact, and impeller port ring 1 outer surface interval heap is welded with some articles of Ni60 material layers 3; Inside surfacing the 2nd Ni60 material layer 4 of casing ring 2.As shown in Figure 1, a Ni60 material layer 3 and the 2nd Ni60 material layer 4 institute coated region mutually corresponding.
The region of impeller port ring 1 outer surface between an adjacent Ni60 material layer 3 all has labyrinth seal groove 5.
Casing ring 2 internal surface has endoporus 6, and described 2nd Ni60 material layer 4 heap to be welded in endoporus 6 and concordant with endoporus 6 outer rim.
The body material of a described Ni60 material layer 3 and the 2nd Ni60 material layer 4 is ZG200-400 or ZG230-450 or ZGCr17Ni2; One Ni60 material layer 3 and the 2nd Ni60 material layer 4 thickness are 1.5-3mm.One Ni60 material layer 3 and the 2nd Ni60 material layer 4 distinguish the internal surface of wound impeller choma 1 outer surface and casing ring 2 all in the form of a ring; Labyrinth seal groove 5 is also that cyclic rings is around impeller port ring 1 outer surface.
At centrifugal pump body seal ring (see figure 3) endoporus 6 and the thick Ni60 of impeller port ring (see figure 4) external diameter built-up welding 1.5-3mm, body material is ZG200-400, ZG230-450 or ZGCr17Ni2, because of Ni60 material hardness HRC58-62, there is the premium properties such as wear-resisting, anti-corrosion and anti-oxidant, compare with impeller port ring with the casing ring of cast iron, cast steel, stainless steel material, the life-span can improve several times and even tens times.The utility model can reduce casing ring and impeller port ring replacement frequency, reduces water pump surfaceman labor intensity, improves volumetric efficiency and the operational reliability of water pump.
Claims (4)
1. centrifugal pump impeller choma and a casing ring structure, comprises the impeller port ring (1) and casing ring (2) that cooperatively interact, it is characterized in that, impeller port ring (1) outer surface interval heap is welded with some articles of Ni60 material layers (3); The inside surfacing the 2nd Ni60 material layer (4) of casing ring (2).
2. a kind of centrifugal pump impeller choma as claimed in claim 1 and casing ring structure, is characterized in that, the region of impeller port ring (1) outer surface between an adjacent Ni60 material layer (3) all has labyrinth seal groove (5).
3. a kind of centrifugal pump impeller choma as claimed in claim 1 or 2 and casing ring structure, it is characterized in that, casing ring (2) internal surface has endoporus (6), and described 2nd Ni60 material layer (4) heap to be welded in endoporus (6) and concordant with endoporus (6) outer rim.
4. a kind of centrifugal pump impeller choma as claimed in claim 3 and casing ring structure, is characterized in that, the body material of a described Ni60 material layer (3) and the 2nd Ni60 material layer (4) is ZG200-400 or ZG230-450 or ZGCr17Ni2; One Ni60 material layer (3) and the 2nd Ni60 material layer (4) thickness are 1.5-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753542.1U CN204283985U (en) | 2014-12-05 | 2014-12-05 | A kind of centrifugal pump impeller choma and casing ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753542.1U CN204283985U (en) | 2014-12-05 | 2014-12-05 | A kind of centrifugal pump impeller choma and casing ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283985U true CN204283985U (en) | 2015-04-22 |
Family
ID=52867150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420753542.1U Expired - Fee Related CN204283985U (en) | 2014-12-05 | 2014-12-05 | A kind of centrifugal pump impeller choma and casing ring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331782A (en) * | 2018-01-29 | 2018-07-27 | 陈恒平 | A kind of centrifugal pump closed type impeller |
-
2014
- 2014-12-05 CN CN201420753542.1U patent/CN204283985U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331782A (en) * | 2018-01-29 | 2018-07-27 | 陈恒平 | A kind of centrifugal pump closed type impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20211205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |