CN207212739U - A kind of combination sealing formula circulation axial-flow pump - Google Patents
A kind of combination sealing formula circulation axial-flow pump Download PDFInfo
- Publication number
- CN207212739U CN207212739U CN201721297356.1U CN201721297356U CN207212739U CN 207212739 U CN207212739 U CN 207212739U CN 201721297356 U CN201721297356 U CN 201721297356U CN 207212739 U CN207212739 U CN 207212739U
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- Prior art keywords
- pump
- seal
- impeller
- reinforced
- sealing
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- Expired - Fee Related
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Abstract
A kind of combination sealing formula circulation axial-flow pump, the architectural feature of the pump are the ends that impeller in the pump housing is fixed on pump shaft by impeller nut, and accessory impeller is arranged in pump cover side chamber body by positioning sleeve；Double End contact seals is assemblied in sealing axle sleeve and contacted in the cavity that seal receptacle is formed；Reinforced seal seat is connected with the right side of seal receptacle contacting, reinforced seal is set on the pump shaft in reinforced seal seat.In the combined sealing structure, accessory impeller is cylindrical with the gap of pump cover inner chamber wall, can prevent solid particle from entering annular seal space, guarantee annular seal space excessively stream dielectric clean is pollution-free；Annular seal space medium is sealed by Double End contact seals, sealed reliable；Cleaning medium is injected in the cavity formed by contacting seal receptacle and reinforced seal seat and forms pressure flushing, while reinforced seal is formed to the cavity and sealed；A variety of sealing protection measures, axial-flow pump is set to accomplish zero leakage, highly reliable, long-life when conveying contains particle and Korrosionsmedium.
Description
Technical field
The utility model belongs to mechanical engineering pump class field, a kind of combination sealing formula circulation axial-flow related in particular to
Pump.
Background technology
Axial-flow pump is a kind of high-specific speed pump, has the characteristics of flow is big, lift is low, is obtained in industry-by-industry and association area
To wide model application.Common axial-flow pump when conveying contains certain particle or has strong corrosive media, easily fail by sealing,
Cause medium to reveal, pollute environment.In order to prevent dielectric leakage, the seal member of axial-flow pump must be frequently changed.General sealing
The life-span of part at 1 month or so, is frequently changed and causes pump group maintenance maintenance cost very expensive, and have a strong impact on production.
It is limited to the limitation of plain shaft stream pump configuration, when conveying contains particle and Korrosionsmedium, common axial-flow pump can not meet to produce
It is required that.
The content of the invention
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of combination sealing formula circulation axial-flow
Pump.
Realizing the technical scheme that the purpose of this utility model uses is：The combination sealing formula circulation axial-flow pump includes impeller spiral shell
Mother, impeller, positioning sleeve, the pump housing, pump shaft, accessory impeller, sealing axle sleeve, Double End contact seals, pump cover, contact seal receptacle, bone
Frame sealing, reinforced seal seat；Impeller in the pump housing is fixed on the end of pump shaft by impeller nut, and accessory impeller is pacified by positioning sleeve
In pump cover side chamber body；Double End contact seals is assemblied in sealing axle sleeve and contacted in the cavity that seal receptacle is formed, and leads to
Cross contact seal receptacle and realize axially position；Reinforced seal seat is connected with the right side of seal receptacle contacting, the pump in reinforced seal seat
Reinforced seal is set on axle.So, it is formed the combined sealing structure of accessory impeller+Double End contact seal+reinforced seal.
The beneficial effects of the utility model are：In the combination sealing, accessory impeller and axle rotate together, one side balance shaft
To power and sealing cavity pressure is reduced, another aspect reasonable set accessory impeller is cylindrical with the gap of pump cover inner chamber wall, passes through at a high speed
Rotation prevents solid particle from entering annular seal space, ensures that annular seal space excessively stream dielectric clean is pollution-free；Annular seal space medium passes through double ground
Contact seals is sealed, sealed reliable；In the cavity that contact seal receptacle and reinforced seal seat are formed, pass through reinforced seal
Interface on seat injects cleaning medium into cavity, is formed and forces to rinse, while reinforced seal is formed to the cavity and sealed；It is a variety of
Sealing protection measure, axial-flow pump is set to accomplish zero leakage, highly reliable, long-life when conveying contains particle and Korrosionsmedium.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of combination sealing formula circulation axial-flow pump structural representation of the utility model.
In figure, 1. impeller nuts, 2. impellers, 3. positioning sleeves, 4. pump housings, 5 pump shafts, 6. accessory impellers, 7. sealing axle sleeves,
8. Double End contact seals, 9. pump covers, 10. contact seal receptacles, 11. reinforced seals, 12. reinforced seal seats.
Embodiment
In the accompanying drawings, a kind of combination sealing formula circulation axial-flow pump of the utility model, the pump include impeller nut, impeller, determined
Position set, the pump housing, pump shaft, accessory impeller, sealing axle sleeve, Double End contact seals, pump cover, contact seal receptacle, reinforced seal, skeleton
Seal receptacle；Impeller 2 in the pump housing 4 is fixed on the end of pump shaft 5 by impeller nut 1, and accessory impeller 6 is arranged on by positioning sleeve 3
In the side chamber body of pump cover 9；Double End contact seals 8 is assemblied in sealing axle sleeve 7 and contacted in the cavity that seal receptacle 10 is formed, and leads to
Cross contact seal receptacle 10 and realize axially position；Reinforced seal seat 12, reinforced seal seat are connected with the right side of contact seal receptacle 10
Reinforced seal 11 is set on the pump shaft in 12.So, it is formed the group of accessory impeller+Double End contact seal+reinforced seal
Close sealing structure.
In the combination sealing, accessory impeller and axle rotate together, one side balancing axial thrust and reduction sealing cavity pressure, separately
One side reasonable set accessory impeller is cylindrical with the gap of pump cover inner chamber wall, prevents solid particle from entering sealing by high speed rotation
Chamber, ensure that annular seal space excessively stream dielectric clean is pollution-free；Annular seal space medium is sealed by double ground contact seals, and sealing can
Lean on；In the cavity that contact seal receptacle and reinforced seal seat are formed, injected clearly into cavity by the interface on reinforced seal seat
Clean medium, formed and force to rinse, while reinforced seal is formed to the cavity and sealed；A variety of sealing protection measures, make axial-flow pump exist
When conveying contains particle and Korrosionsmedium, accomplish zero leakage, highly reliable, long-life.
The pump can convey the media such as inflammable, the explosive, severe corrosive containing certain granules, and flow is big, lift is low, mainly
For chemistry, petrochemical industry, oil plant, power plant, papermaking, paper pulp and the industrial sites such as alkali, salt manufacturing, urban water supply are made, especially
Especially suitable for salt manufacturing, alkaline forced circulation system among.
Claims (1)
1. a kind of combination sealing formula circulation axial-flow pump, the pump include impeller nut, impeller, positioning sleeve, the pump housing, pump shaft, accessory impeller,
Sealing axle sleeve, Double End contact seals, pump cover, contact seal receptacle, reinforced seal, reinforced seal seat；It is characterized in that：It is described
The pump housing (4) in impeller (2) ends of pump shaft (5) is fixed on by impeller nut (1), accessory impeller (6) passes through positioning sleeve (3)
In pump cover (9) side chamber body；Double End contact seals (8) is assemblied in sealing axle sleeve (7) and contact seal receptacle (10) shape
Into cavity in, and realize axially position by contacting seal receptacle (10)；Skeleton is connected with the right side of contact seal receptacle (10)
Seal receptacle (12), reinforced seal (11) is set on the pump shaft in reinforced seal seat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721297356.1U CN207212739U (en) | 2017-09-22 | 2017-09-22 | A kind of combination sealing formula circulation axial-flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721297356.1U CN207212739U (en) | 2017-09-22 | 2017-09-22 | A kind of combination sealing formula circulation axial-flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212739U true CN207212739U (en) | 2018-04-10 |
Family
ID=61820670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721297356.1U Expired - Fee Related CN207212739U (en) | 2017-09-22 | 2017-09-22 | A kind of combination sealing formula circulation axial-flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212739U (en) |
-
2017
- 2017-09-22 CN CN201721297356.1U patent/CN207212739U/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 |
Granted publication date: 20180410 Termination date: 20190922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |