CN211039051U - Composite self-priming centrifugal pump - Google Patents
Composite self-priming centrifugal pump Download PDFInfo
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- CN211039051U CN211039051U CN201920599931.6U CN201920599931U CN211039051U CN 211039051 U CN211039051 U CN 211039051U CN 201920599931 U CN201920599931 U CN 201920599931U CN 211039051 U CN211039051 U CN 211039051U
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- stage impeller
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Abstract
The utility model relates to a possess from inhaling combined type centrifugal pump of function. Including the gear box assembly, with the pump shaft of gear box assembly meshing and the pump body of pump shaft is located to the cover, the pump body includes following subassembly: a pump housing; the sealing seat is sleeved on the pump shaft and is matched and sealed with the end part of the gear box assembly; the mechanical seal is sleeved on the pump shaft and is matched and sealed with the seal seat; the impeller assembly comprises a primary impeller, a secondary impeller and a tertiary impeller, the impeller assembly is sequentially sleeved on the pump shaft from one end far away from the gear box assembly, and the end part of the impeller assembly is locked through a locking part; a certain gap is formed between the first-stage impeller and the second-stage impeller, and the assembling parts of the second-stage impeller and the third-stage impeller are tightly attached and assembled; the baffle is arranged between the second-stage impeller and the third-stage impeller and fixed with the pump shell through the pressure plate, the guide vane is sleeved between the first-stage impeller and the second-stage impeller, and the shaft sleeve is sleeved on the pump shaft between the first-stage impeller and the second-stage impeller to limit the distance between the first-stage impeller and the second-stage impeller; the pump shell is fixedly provided with a flange outside the primary impeller.
Description
Technical Field
The utility model belongs to the technical field of the centrifugal pump, concretely relates to possess from inhaling combined type centrifugal pump of function.
Background
The self-priming centrifugal pump is a self-priming pump for short, the water inlet pipe of the self-priming centrifugal pump is not provided with a bottom valve, the structure of a pump body is changed, so that part of water can be stored after the self-priming centrifugal pump is stopped, air in the water inlet pipe is gradually discharged through mixing and centrifugation of air and water during starting, degassed water returns to a proper position in the pump through a return channel, and the process is repeated, so that the purpose of self-priming water filling is achieved.
The self-priming pump needs not to be irrigated except for the first start, and does not need to be irrigated after the start, and the self-priming pump can suck water up to put into normal operation by the action of the self-priming pump after running for a short time. The self-priming centrifugal pump is simple to operate, has stronger adaptability than a common centrifugal pump, is widely applied to departments of agriculture, fire fighting, municipal administration, electric power, mines and the like, and is particularly suitable for occasions with frequent flowing irrigation and drainage and frequent starting or difficult liquid irrigation.
The composite self-priming centrifugal pump is a key device for providing high-lift and high-pressure liquid developed on the basis of a single-stage self-priming centrifugal pump.
The core components of a centrifugal pump are an impeller and guide vanes. At present, the traditional multistage self-priming centrifugal pump adopts a plurality of equidirectional impellers and a plurality of radial guide vanes. The disadvantages of this configuration are as follows: (1) a plurality of impellers rotating in the same direction generate a large axial force and a dynamic reaction force on the main shaft. The rotor produces axial displacement under the effect of axial force, causes grinding each other between sound portion, collision, leads to the water pump to seriously damage. The existence of axial force can cause the water pump to be unable for a long time steady operation, reduces its life and wholeness ability, endangers operating personnel's safety even when serious. (2) The axial size of the positive guide vane is large, so that the production cost of the radial guide vane is greatly increased.
Through the retrieval, the realization scheme of overcoming the combined type self-priming centrifugal pump of above-mentioned technical obstacle has not seen relevant report yet, the utility model discloses aim at solving this technical problem.
SUMMERY OF THE UTILITY MODEL
In order to overcome traditional multistage from inhaling the shortcoming of centrifugal pump, the utility model provides a combined type is from inhaling the centrifugal pump, this utility model not only can improve multistage from inhaling the single-stage lift of centrifugal pump and reduce multistage from inhaling the manufacturing cost of centrifugal pump, still form good from inhaling the ability, reduce the axial force.
The utility model discloses a solve the technical scheme that its technical problem adopted and be:
the combined type self-priming centrifugal pump comprises a gear box assembly, a pump shaft meshed with the gear box assembly and a pump body sleeved on the pump shaft, wherein the pump body comprises the following components:
a pump housing for carrying components of the pump body;
the sealing seat is sleeved on the pump shaft and is matched and sealed with the end part of the gear box assembly;
the mechanical seal is sleeved on the pump shaft and is matched and sealed with the seal seat;
the impeller assembly comprises a primary impeller, a secondary impeller and a tertiary impeller, the impeller assembly is sequentially sleeved on the pump shaft from one end far away from the gear box assembly, and the end part of the impeller assembly is locked through a locking part; a certain gap is formed between the first-stage impeller and the second-stage impeller, and the assembling parts of the second-stage impeller and the third-stage impeller are tightly attached and assembled;
the baffle is arranged between the second-stage impeller and the third-stage impeller and is fixed with the pump shell through the pressure plate,
the guide vane is sleeved between the first-stage impeller and the second-stage impeller, and the shaft sleeve is sleeved on the pump shaft between the first-stage impeller and the second-stage impeller to limit the distance between the first-stage impeller and the second-stage impeller;
the pump shell is fixedly provided with a flange outside the primary impeller.
The utility model discloses a tertiary impeller from inhaling centrifugal pump, the mode of arranging of impeller has carried out optimal design, closely laminates between two, the tertiary impeller, reduces the multistage from inhaling centrifugal pump's axial dimension, has still add the one-level impeller, one, through the stator structure between the two impellers, reinforce from inhaling efficiency.
Preferably, the at least two-stage impeller and the three-stage impeller are identical in structure and respectively comprise an assembling portion and an impeller body, and the two-stage impeller and the three-stage impeller are arranged back to back. The second-stage impeller and the third-stage impeller are arranged back to back, so that the arrangement mode of the impellers is further optimized, the axial size of the multistage self-priming centrifugal pump is optimally reduced, the production cost is reduced, and the axial force is reduced.
Preferably, the structure of the first-stage impeller is the same as that of the second-stage impeller, and the assembling portion of the guide vane is sleeved on the assembling portion of the first-stage impeller.
Preferably, the locking piece is composed of a locking nut and a locking gasket, and the primary impeller is locked and fixed on the pump shaft through the matching of the locking nut and the locking gasket.
Preferably, the water suction chamber of the pump housing between the secondary impeller and the tertiary impeller is of a semi-spiral structure.
The utility model has the advantages that: the utility model discloses a tertiary impeller from inhaling centrifugal pump, the mode of arranging of impeller has carried out optimal design, closely laminates between two, the tertiary impeller, reduces the multistage from inhaling centrifugal pump's axial dimension, has still add the one-level impeller, one, through the stator structure between the two impellers, reinforce from inhaling efficiency. The utility model discloses a not only can improve the multistage from inhaling the single-stage lift of centrifugal pump and reduce the multistage from inhaling the manufacturing cost of centrifugal pump, still form good from inhaling the ability, reduce the axial force.
Drawings
Fig. 1 is a sectional view of the present invention.
In the figure: 1. the device comprises a gear box assembly, 2, a pump shaft, 3, a pump shell, 4, a sealing seat, 5, a mechanical seal, 6, a first-stage impeller, 7, a second-stage impeller, 8, a third-stage impeller, 9, a baffle, 10, a pressure plate, 11, a guide vane, 12, a shaft sleeve, 13, a flange, 14, a locking nut, 15 and a locking gasket.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
The composite self-priming centrifugal pump shown in fig. 1 comprises a gear box assembly 1, a pump shaft 2 engaged with the gear box assembly 1, and a pump body sleeved on the pump shaft 2, wherein the pump body comprises the following components:
a pump housing 3 for carrying the components of the pump body;
the sealing seat 4 is sleeved on the pump shaft 2 and is matched and sealed with the end part of the gear box assembly 1;
the mechanical seal 5 is sleeved on the pump shaft 2 and is matched and sealed with the seal seat 4;
the impeller assembly comprises a primary impeller 6, a secondary impeller 7 and a tertiary impeller 8, the impeller assembly is sequentially sleeved on the pump shaft 2 from one end far away from the gear box assembly 1, and the end part of the impeller assembly is locked through a locking part; a certain gap is formed between the first-stage impeller and the second-stage impeller, and the assembling parts of the second-stage impeller and the third-stage impeller are tightly attached and assembled;
the baffle 9 is arranged between the second-stage impeller and the third-stage impeller and is fixed with the pump shell 3 through a pressure plate 10,
the guide vane 11 is sleeved between the first-stage impeller and the second-stage impeller, and the shaft sleeve 12 is sleeved on the pump shaft 2 between the first-stage impeller and the second-stage impeller to limit the distance between the first-stage impeller and the second-stage impeller;
the pump housing 3 is fixedly provided with a flange 13 at the outside of the primary impeller 6.
The utility model discloses a tertiary impeller from inhaling centrifugal pump, the mode of arranging of impeller has carried out optimal design, closely laminates between two, the tertiary impeller, reduces the multistage from inhaling centrifugal pump's axial dimension, has still add the one-level impeller, one, through the stator structure between the two impellers, reinforce from inhaling efficiency.
Specifically, the at least two-stage impeller 7 and the three-stage impeller 8 are identical in structure and comprise an assembling portion and an impeller body, and the two-stage impeller 7 and the three-stage impeller 8 are arranged back to back. The second-stage impeller and the third-stage impeller are arranged back to back, so that the arrangement mode of the impellers is further optimized, the axial size of the multistage self-priming centrifugal pump is optimally reduced, and the production cost is reduced.
Further, the configuration of the first-stage impeller 6 is the same as that of the second-stage impeller 7, and the fitting portion of the guide vane 11 is fitted to the fitting portion of the first-stage impeller 6.
In the embodiment, the locking member is composed of a locking nut 14 and a locking washer 15, and the primary impeller 6 is locked and fixed on the pump shaft 2 through the matching of the locking nut 14 and the locking washer 15. And the water suction chamber of the pump shell 3 between the secondary impeller 7 and the tertiary impeller 8 is of a semi-spiral structure, so that the axial force is reduced.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (5)
1. The combined type is from inhaling centrifugal pump, locate the pump body of pump shaft (2), its characterized in that including gear box assembly (1), with pump shaft (2) and the cover of gear box assembly (1) meshing: the pump body includes the following subassembly:
a pump housing (3) for carrying components of the pump body;
the sealing seat (4) is sleeved on the pump shaft (2) and is matched and sealed with the end part of the gear box assembly (1);
the mechanical seal (5) is sleeved on the pump shaft (2) and is matched and sealed with the seal seat (4);
the impeller assembly comprises a primary impeller (6), a secondary impeller (7) and a tertiary impeller (8), the pump shaft (2) is sleeved with one end away from the gear box assembly (1) in sequence, and the end part of the impeller assembly is locked by a locking piece; a certain gap is formed between the first-stage impeller and the second-stage impeller, and the assembling parts of the second-stage impeller and the third-stage impeller are tightly attached and assembled;
the baffle (9) is arranged between the second-stage impeller and the third-stage impeller and is fixed with the pump shell (3) through a pressure plate (10),
the guide vane (11) is sleeved between the first-stage impeller and the second-stage impeller, and the shaft sleeve (12) is sleeved on the pump shaft (2) between the first-stage impeller and the second-stage impeller to limit the distance between the first-stage impeller and the second-stage impeller;
a flange (13) is fixedly arranged outside the pump shell (3) positioned on the first-stage impeller (6).
2. The composite self-priming centrifugal pump of claim 1, wherein: at least the second-stage impeller (7) and the third-stage impeller (8) are identical in structure and comprise an assembling portion and an impeller body, and the second-stage impeller (7) and the third-stage impeller (8) are arranged back to back.
3. The composite self-priming centrifugal pump of claim 2, wherein: the structure of the first-stage impeller (6) is the same as that of the second-stage impeller (7), and the assembling part of the guide vane is sleeved on the assembling part of the first-stage impeller (6).
4. The composite self-priming centrifugal pump of claim 3, wherein: the locking piece is composed of a locking nut (14) and a locking gasket (15), and the first-stage impeller (6) is locked and fixed on the pump shaft (2) through the matching of the locking nut (14) and the locking gasket (15).
5. The composite self-priming centrifugal pump of claim 4, wherein: the water suction chamber of the pump shell (3) between the second-stage impeller (7) and the third-stage impeller (8) is of a semi-spiral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920599931.6U CN211039051U (en) | 2019-04-28 | 2019-04-28 | Composite self-priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920599931.6U CN211039051U (en) | 2019-04-28 | 2019-04-28 | Composite self-priming centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039051U true CN211039051U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920599931.6U Active CN211039051U (en) | 2019-04-28 | 2019-04-28 | Composite self-priming centrifugal pump |
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| CN (1) | CN211039051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
| US11988212B2 (en) | 2021-08-02 | 2024-05-21 | Techtronic Cordless Gp | Fluid transfer pump |
-
2019
- 2019-04-28 CN CN201920599931.6U patent/CN211039051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
| US11988212B2 (en) | 2021-08-02 | 2024-05-21 | Techtronic Cordless Gp | Fluid transfer pump |
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