CN209261831U - Axial force in multi-stage centrifugal pump self-balance structure - Google Patents
Axial force in multi-stage centrifugal pump self-balance structure Download PDFInfo
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- CN209261831U CN209261831U CN201821930338.7U CN201821930338U CN209261831U CN 209261831 U CN209261831 U CN 209261831U CN 201821930338 U CN201821930338 U CN 201821930338U CN 209261831 U CN209261831 U CN 209261831U
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- pump
- impeller
- suction
- double
- spiral case
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Abstract
The utility model discloses a kind of axial force in multi-stage centrifugal pump self-balance structures, it includes single-suction (single-in let) impeller, guide vane, partition, axle sleeve, double-entry impeller, the pump housing, pump shaft, mechanical seal and bearing block.The middle spiral case two sides of the pump housing are separated into the double suction pump chamber of placement double-entry impeller by partition, and the side spiral case positioned at both ends forms single suction pump chamber by built-in single-suction (single-in let) impeller and guide vane.The pump shaft extends transversely through the pump housing and built-in single-suction (single-in let) impeller and double-entry impeller, and the axle sleeve being set between single-suction (single-in let) impeller and double-entry impeller by pump shaft is axially alternate, and the junction of pump shaft both ends and the pump housing is respectively provided with mechanical seal and bearing block.Both ends symmetrical placement structure size is identical, towards opposite single suction pump chamber, the axial thrust generated when operation is equal in magnitude, but it is contrary, therefore fall harmful axial thrust in the internal autobalance of pump, so that pumping matched bearing block only undertakes radial load, therefore pump operation is steady, noise is low, greatly reduces failure rate.
Description
Technical field
The utility model belongs to field of hydraulic machinery technology, in particular, the utility model relates to a kind of water pump structure, it is special
It is not a kind of axial force in multi-stage centrifugal pump self-balance structure.
Background technique
In engineering, it is used for transmission the common apparatus first choice centrifugal multistage pump multiple centrifugal pump of high-pressure medium, is situated between under normal circumstances according to transmission
The working pressure and uninterrupted of matter configure the rotor of centrifugal multistage pump multiple centrifugal pump.The centrifugal multistage pump multiple centrifugal pump of the prior art is all made of impeller
For one direct-axis to arrangement architecture, the rotor structure of the type is simple, orderly aligned, easily realizes pressurization output.But centrifugal pump impeller
Pressure at both sides etc. when operating are also easy to produce corresponding axial thrust.The impeller that the rotor of centrifugal multistage pump multiple centrifugal pump is arranged by a more in-line arrangements
Composition, therefore the axial thrust that impeller generates forms superposition.Axial thrust has very strong destructiveness to pump configuration, easily causes multistage
The two ends of rotor bearing lateral force of centrifugal pump and damage.In order to reduce the destructiveness of axial thrust, the prior art it is multistage from
Heart pump is all provided with balancing frame or balancing drum carrys out balancing axial thrust.Due to removing in axial thrust balancing structure built in centrifugal multistage pump multiple centrifugal pump
Increase outside manufacture difficulty, axial thrust can't be completely eliminated, allotment difficulty is big when especially assembling.Centrifugal multistage pump multiple centrifugal pump in reality
The matched bearing of two ends of rotor can only undertake radial load, cannot bear axial thrust.Otherwise bearing load is increased, bearing is caused
Fever even scaling loss, thus increases the failure rate of centrifugal multistage pump multiple centrifugal pump.
Utility model content
The utility model mainly for the deficiencies in the prior art, propose a kind of structure is simple, manufacture is easy, reliable for operation,
The strong axial force in multi-stage centrifugal pump self-balance structure of self-balancing ability.
The utility model is achieved through the following technical solutions technical goal.
Axial force in multi-stage centrifugal pump self-balance structure, it includes single-suction (single-in let) impeller, guide vane, partition, axle sleeve, double-entry impeller, pump
Body, pump shaft, mechanical seal and bearing block.It is theed improvement is that: the pump housing is equipped with the spiral case of 3 arranged in co-axial alignment, is located at
The middle spiral case of section is equipped with a pump discharge, and middle spiral case two sides are separated into the double suction pump chamber of placement double-entry impeller by partition, is located at pump
The side spiral case at body both ends is respectively equipped with pump intake, and side spiral case forms single suction pump chamber by built-in single-suction (single-in let) impeller and guide vane.The pump
Axis extends transversely through the pump housing and built-in single-suction (single-in let) impeller and double-entry impeller, is set between single-suction (single-in let) impeller and double-entry impeller by pump shaft 7
Axle sleeve is axially alternate, and the junction of pump shaft both ends and the pump housing is respectively provided with mechanical seal and bearing block.
As the scheme of further improvement, the single-suction (single-in let) impeller import and double-entry impeller phase that are disposed in the two end edge spiral case of the pump housing
Towards identical, the single-suction (single-in let) impeller import set up separately at both ends is contrary for the import of adjacent side.
As the scheme of further improvement, the symmetrically arranged side spiral case in the pump housing both ends and single-suction (single-in let) impeller structure size phase
Together.
The utility model compared with prior art, has the positive effect that:
1, coaxial-symmetrical adds reciprocal transformation, and structure is simple, compact, manufacture is easy；
2, coaxial-symmetrical reversely disposes single-suction (single-in let) impeller, just forms axial thrust self-balance structure, saves unnecessary limit
Balanced structure not only simplifies structure, but also overcomes the problem of equipment adjustment hardly possible；
3, the axial thrust generated when pump operation is mutually balanced, and matched bearing block is pumped under this operating condition and only undertakes radial direction
Load, therefore pump operation is steady, noise is low, greatly reduces failure rate.
Detailed description of the invention
Fig. 1 is the utility model structural profile illustration.
Specific embodiment
Below according to attached drawing and in conjunction with the embodiments, the utility model is described in further detail.
Axial force in multi-stage centrifugal pump self-balance structure shown in FIG. 1, it includes single-suction (single-in let) impeller 1, guide vane 2, partition 3, axle sleeve
4, double-entry impeller 5, the pump housing 6, pump shaft 7, mechanical seal 8 and bearing block 9.The pump housing 6 is a kind of multi-cavity shell, and the present embodiment is total
If the spiral case of 3 arranged in co-axial alignment.Middle spiral case sets a pump discharge 6.1, and middle spiral case two sides are separated into placement double-entry impeller by partition 3
5 double suction pump chamber.Two structure sizes are identical, respectively set a pump intake 6.2 towards opposite side spiral case, side spiral case is by built-in
Single-suction (single-in let) impeller 1 and guide vane 2 form single suction pump chamber.The 1 import direction of single-suction (single-in let) impeller and double suction disposed in 6 liang of end edge spiral cases of the pump housing
The adjacent side-entrance of impeller 5 is towards identical.The 1 import direction of single-suction (single-in let) impeller set up separately at both ends is identical, and a left side is located in the present embodiment
1 import of single-suction (single-in let) impeller at end is towards a left side, and 1 import of single-suction (single-in let) impeller positioned at right end is towards the right side.The pump shaft 7 extends transversely through the pump housing 6 and interior
The single-suction (single-in let) impeller 1 and double-entry impeller 5 set, the axle sleeve being set between single-suction (single-in let) impeller 1 and double-entry impeller 5 by pump shaft 7 is axially alternate, pump
7 both ends of axis and the junction of the pump housing 6 are respectively provided with mechanical seal 8 and bearing block 9.
Above structure self-assembling formation single suction pump chamber is the preposition pump configuration of double suction pump chamber, it is most important that both ends symmetrical placement
Structure size is identical, and towards opposite single suction pump chamber, the axial thrust that when operation generates is equal in magnitude but contrary, therefore
Fall harmful axial thrust pumping internal autobalance, so that pumping matched bearing block 9 only undertakes radial load, therefore pump operation
Steadily, noise is low, greatly reduces failure rate.
Claims (3)
1. a kind of axial force in multi-stage centrifugal pump self-balance structure, it includes single-suction (single-in let) impeller (1), guide vane (2), partition (3), axle sleeve
(4), double-entry impeller (5), the pump housing (6), pump shaft (7), mechanical seal (8) and bearing block (9)；It is characterized by: the pump housing (6)
Spiral case equipped with 3 arranged in co-axial alignment, the middle spiral case positioned at middle section are equipped with a pump discharge (6.1), and middle spiral case two sides are by partition (3)
It is separated into the double suction pump chamber of placement double-entry impeller (5), the side spiral case for being located at the pump housing (6) both ends is respectively equipped with pump intake (6.2), side
Spiral case forms single suction pump chamber by built-in single-suction (single-in let) impeller (1) and guide vane (2)；The pump shaft (7) extends transversely through the pump housing (6) and built-in
Single-suction (single-in let) impeller (1) and double-entry impeller (5), between single-suction (single-in let) impeller (1) and double-entry impeller (5) by pump shaft (7) be set with axle sleeve (4)
Axial alternate, the junction of pump shaft (7) both ends and the pump housing (6) is respectively provided with mechanical seal (8) and bearing block (9).
2. axial force in multi-stage centrifugal pump self-balance structure according to claim 1, it is characterised in that: the pump housing (6) two
The import of single-suction (single-in let) impeller (1) import and the adjacent side of double-entry impeller (5) that dispose in end edge spiral case is set up separately at both ends towards identical
Single-suction (single-in let) impeller (1) import it is contrary.
3. axial force in multi-stage centrifugal pump self-balance structure according to claim 1, it is characterised in that: the pump housing (6) two
Hold symmetrically arranged side spiral case identical with single-suction (single-in let) impeller (1) structure size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930338.7U CN209261831U (en) | 2018-11-22 | 2018-11-22 | Axial force in multi-stage centrifugal pump self-balance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930338.7U CN209261831U (en) | 2018-11-22 | 2018-11-22 | Axial force in multi-stage centrifugal pump self-balance structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261831U true CN209261831U (en) | 2019-08-16 |
Family
ID=67564001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821930338.7U Active CN209261831U (en) | 2018-11-22 | 2018-11-22 | Axial force in multi-stage centrifugal pump self-balance structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209261831U (en) |
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2018
- 2018-11-22 CN CN201821930338.7U patent/CN209261831U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.9 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Haike Equipment Technology Co., Ltd.) Patentee after: Jiangsu Zhenhua Haike Equipment Technology Co., Ltd Address before: 225500 Jiangsu Zhenhua Pump Manufacturing Co., Ltd., Jiangyan Road, Jiangyan District, Jiangsu, Taizhou 9 Patentee before: JIANGSU ZHENHUA PUMP MANUFACTURING Co.,Ltd. |