CN202157994U - Improved sealing ring structure for horizontal type middle open double entry pump - Google Patents
Improved sealing ring structure for horizontal type middle open double entry pump Download PDFInfo
- Publication number
- CN202157994U CN202157994U CN201120228263XU CN201120228263U CN202157994U CN 202157994 U CN202157994 U CN 202157994U CN 201120228263X U CN201120228263X U CN 201120228263XU CN 201120228263 U CN201120228263 U CN 201120228263U CN 202157994 U CN202157994 U CN 202157994U
- Authority
- CN
- China
- Prior art keywords
- impeller
- seal ring
- sealing ring
- ring structure
- horizontal type
- 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 - Lifetime
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Abstract
The utility model provides an improved sealing ring structure for a horizontal type middle open double entry pump, which is capable of effectively resolving the problem that in the prior art, an impeller is easy to be abraded due to the fact that a sealing ring is directly sleeved on the impeller, thereby reducing replacing and maintenance cost of equipment. The improved sealing ring structure for the horizontal type middle open double entry pump comprises the sealing ring arranged at the inlet position of the impeller and is characterized in that an impeller abrasion resistant ring is arranged between the sealing ring and the impeller, and the sealing ring and the impeller abrasion resistant ring are in clearance fit.
Description
Technical field
The utility model relates to centrifugal pump constructing technology field, is specially a kind of improved horizontal seal ring structure of driving double suction pump that is used for.
Background technique
General be used for the horizontal double suction seal ring of driving double suction pump it directly is sleeved on impeller; See accompanying drawing 1; Thereby the double suction seal ring is to reduce pump chamber water through clearance seal to flow to impeller inlet side raising plot ratio from the high pressure side; Because seal ring 1 one sides are that hyperbaric chamber 4, opposite side are low pressure chamber 5 during pump working, the clearance plane that the water of hyperbaric chamber 4 cooperates between low pressure chamber 5 anxious crossfires are prone to easily to seal ring 1, impeller 2 causes wearing and tearing, especially when containing a large amount of silt in the water, can cause heavy wear to impeller; The impeller cost is high, the replacement cycle is long and change, thereby increases the maintenance cost of water pump greatly.Among Fig. 1,6 is pump case, and 3 is pump shaft.
Summary of the invention
To the problems referred to above; The utility model provides a kind of improved horizontal seal ring structure of driving double suction pump that is used for; It can effectively solve in the past owing to seal ring directly is sleeved on the problem that causes impeller easy to wear on the impeller, thereby reduces the equipment replacement maintenance cost.
Its technological scheme is such, and it comprises seal ring, and said seal ring is installed on the impeller inlet place, it is characterized in that: the impeller abrasion-proof ring is installed, Spielpassung between said seal ring and the said impeller abrasion-proof ring between said seal ring and the impeller.
It is further characterized in that: said impeller abrasion-proof ring is fixed in said impeller through fastening screw trip bolt; Said seal ring surface hardness reaches HRC40.5～46, and said impeller abrasion-proof ring surface hardness reaches HRC60～68.
Compare with seal ring structure in the past; The beneficial effect of the utility model structure is: it is being equipped with Spielpassung between impeller abrasion-proof ring and seal ring and the impeller abrasion-proof ring between seal ring and the impeller; Its not only guaranteed the clearance seal of seal ring and by the impeller abrasion-proof ring as easily damaged parts; Avoided direct wearing and tearing, reduced replacing, maintenance cost impeller to impeller surface; Simultaneously; There is certain difference in the seal ring surface with impeller abrasion-proof ring surface hardness; Feasible wearing and tearing concentrate on seal ring one side as much as possible, because it is more convenient, economical than changing the impeller abrasion-proof ring to change seal ring, so further reduced the maintenance cost of equipment.
Description of drawings
Fig. 1 is general seal ring structure schematic representation;
Fig. 2 is the seal ring structure schematic representation of the utility model.
Embodiment
See Fig. 2, the utility model structure comprises seal ring 1, and seal ring 1 is installed on impeller 2 inlets, between seal ring 1 and the impeller 2 impeller abrasion-proof ring 7 is installed, Spielpassung between seal ring 1 and the impeller abrasion-proof ring 7.Impeller abrasion-proof ring 7 is fixed in impeller 2 through fastening screw trip bolt; Seal ring 1 surface hardness reaches HRC40.5～46, and impeller abrasion-proof ring 7 surface hardnesses reach HRC60～68.Wherein, seal ring material can adopt the sedimentation type Martensitic Stain Less Steel, and impeller abrasion-proof ring cylindrical adopts cemented carbide Co-Wc to carry out the supersonic speed thermal spraying, and coating hardness HV1200-1500 has improved the surface hardness of impeller abrasion-proof ring 7.
Claims (3)
1. one kind improvedly is used for the horizontal seal ring structure of driving double suction pump; It comprises seal ring; Said seal ring is installed on the impeller inlet place, it is characterized in that: the impeller abrasion-proof ring is installed, Spielpassung between said seal ring and the said impeller abrasion-proof ring between said seal ring and the impeller.
2. a kind of improved horizontal seal ring structure of driving double suction pump that is used for according to claim 1, it is characterized in that: said impeller abrasion-proof ring is fixed in said impeller through fastening screw trip bolt.
3. a kind of improved horizontal seal ring structure of driving double suction pump that is used for according to claim 1, it is characterized in that: said seal ring surface hardness reaches HRC40.5～46, and said impeller abrasion-proof ring surface hardness reaches HRC60～68.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120228263XU CN202157994U (en) | 2011-06-30 | 2011-06-30 | Improved sealing ring structure for horizontal type middle open double entry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120228263XU CN202157994U (en) | 2011-06-30 | 2011-06-30 | Improved sealing ring structure for horizontal type middle open double entry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157994U true CN202157994U (en) | 2012-03-07 |
Family
ID=45765634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120228263XU Expired - Lifetime CN202157994U (en) | 2011-06-30 | 2011-06-30 | Improved sealing ring structure for horizontal type middle open double entry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157994U (en) |
-
2011
- 2011-06-30 CN CN201120228263XU patent/CN202157994U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |
|
| CX01 | Expiry of patent term |