CN205918607U - Double -shell double suction spiral case formula multistage centrifugal pump - Google Patents
Double -shell double suction spiral case formula multistage centrifugal pump Download PDFInfo
- Publication number
- CN205918607U CN205918607U CN201620962516.9U CN201620962516U CN205918607U CN 205918607 U CN205918607 U CN 205918607U CN 201620962516 U CN201620962516 U CN 201620962516U CN 205918607 U CN205918607 U CN 205918607U
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- China
- Prior art keywords
- double
- suction
- chamber
- suction chamber
- pump
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Abstract
The utility model discloses a double -shell double suction spiral case formula multistage centrifugal pump, it includes the pump body, middle section, pump shaft, double suction suction chamber, secondary suction chamber, chopped -off head double suction impeller and secondary impeller, characterized in that is equipped with imported gland, delivery chamber and branch semi -ring, the delivery chamber center is equipped with chopped -off head double suction suction chamber and secondary suction chamber, the delivery chamber has two spiral type runners by chopped -off head double suction suction chamber inner wall to secondary suction chamber inner wall syntropy circumference array, the spiral type runner goes out the water end (W. E. ) and is linked together with secondary suction chamber through crossing the runner to the fluid that does benefit to getting into in the delivery chamber carries out the radial force self -balancing, secondary suction chamber adoption loop configuration to do benefit to and reduce installation space, delivery chamber one end is pegged graft with the import gland is fixed through the locating pin, the other end and middle section fixed connection, import gland one end is inconsistent through the terminal surface flange and the pump body, and the other end is through dividing semi -ring and pump body fixed connection, has compact structure, easy dismounting, the assembly part is few, it can good, advantage such as work efficiency is high, long service life to cross the waterborne.
Description
Technical field
This utility model is related to technical field of engineering machinery, specifically a kind of Double-casing double suction scroll casing type multistage centrifugal
Pump.
Background technology
It is known that existing centrifugal multistage pump multiple centrifugal pump, in order to reduce the net positive suction head of pump, generally adopts first-stage double-absorption knot at present
The centrifugal pump of structure, this centrifugal multistage pump multiple centrifugal pump is mainly by pump (cylinder) body 1, stage casing 2, locating ring 16, pump shaft 3, secondary impeller 5, chopped-off head
Double-entry impeller 4, stator 15, locating ring 16, import gland 6 and turnbuckle 18 form；Pump shaft 3 in the described pump housing 1 is provided with
Secondary impeller 5 and double-entry impeller 4, described double-entry impeller is externally provided with double suction suction chamber 20, and described secondary impeller is externally provided with secondary suction
Enter the room 10, described double suction suction chamber 9 is loop configuration, described double suction suction chamber collectively constitutes first stage impeller with unilateral suction chamber and inhales
Enter part, stator 15 is contained in double-entry impeller 4 outer rim in annular water absorbing chamber 9, inner housing one end is through through unilateral suction chamber 19
Clamping screw 18 be fixedly connected with import gland 6 with fixing nut, the other end is cast into the secondary suction chamber 10 in the pump housing 1
Integrally, described import gland 6 is fixedly connected with the pump housing 1 with turnbuckle 17 through hold-down ring 16, and described transition runner 12 is located at double
The inner housing 16 side wall in phyllidium wheel 4 left side is simultaneously communicated with secondary suction chamber 10, and liquid passes through double-entry impeller 4 afterwards through stator 15
Guide functions enter transition runner 12, transition runner 12 have diffusion recover energy and accelerate liquid enter secondary impeller work
With it is ensured that the high efficiency of whole machine.The substantive deficiency of this structure is: Standard part is many, and crossing aqueouss can be bad, work
Efficiency is low, and increased assembly difficulty, the overall precision level of impact unit, and then affects the service life of unit.
Utility model content
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, provides a kind of compact conformation, easy accessibility, dress
Replace the spare parts less, crossing aqueouss can good, high working efficiency, long service life Double-casing double suction scroll casing type centrifugal multistage pump multiple centrifugal pump.
This utility model solves its technical problem and be the technical scheme is that
A kind of Double-casing double suction scroll casing type centrifugal multistage pump multiple centrifugal pump, including the pump housing, stage casing, pump shaft, first-stage double suction impeller and secondary
Impeller it is characterised in that being provided with import gland, delivery chamber and point semi-ring, described delivery chamber center be provided with first-stage double-absorption suction chamber and
Secondary suction chamber, from first-stage double-absorption water suction chamber interior walls, to secondary suction chamber interior walls, Circle-Array shows two whirlpools to described delivery chamber in the same direction
Rotation shape runner, described spiral type runner water side adopts double-volute structure, is connected with secondary suction chamber through transition runner, double snails
Shell structure is radially force self-balanced beneficial to carrying out to the fluid entering extrusion interior, and described secondary suction chamber adopts loop configuration, with
Beneficial to reducing installing space, the located pin in described delivery chamber one end and import gland fix grafting, and the other end is fixing with stage casing even
Connect, described import gland one end is inconsistent with the pump housing through facing flange, the other end is fixedly connected with the pump housing through a point semi-ring, to reach
Part is compact, the effect of easy accessibility.
This utility model can be provided with cowling panel, the shape of described cowling panel and installation direction and stream between described transition runner
The flow direction of body matches, and to reach, aqueouss energy was good, reduce impact loss, thus reaching the work efficiency improving unit
Effect.
This utility model, due to adopting said structure, has compact conformation, easy accessibility, Assembly part is few, cross aqueouss energy
Well, the advantages of high working efficiency, long service life.
Brief description
Fig. 1 is the structural representation of prior art.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation of delivery chamber in this utility model.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is the sectional view of a-a in Fig. 2.
Reference: pump (cylinder) body 1, stage casing 2, pump shaft 3, first-stage double suction impeller 4, secondary impeller 5, import gland 6, extrusion
Room 7, point semi-ring 8, first-stage double-absorption suction chamber 9, secondary suction chamber 10, spiral type runner 11, transition runner 12, alignment pin 13, end
Face flange 14, stator 15, locating ring 16, turnbuckle 17, clamping screw 18, unilateral suction chamber 19, cowling panel 20.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further illustrated:
As shown in drawings, a kind of Double-casing double suction scroll casing type centrifugal multistage pump multiple centrifugal pump, including pump (cylinder) body 1, stage casing 2, pump shaft 3,
First-stage double suction impeller 4 and secondary impeller 5, are provided with pump shaft, stage casing, first-stage double suction impeller 4 and secondary impeller 5, pump in the shown pump housing
Axle, stage casing, first-stage double suction impeller 4 and secondary impeller 5 annexation same as the prior art, this do not repeat it is characterised in that
It is provided with import gland 6, delivery chamber 7 and point semi-ring 8, described delivery chamber 7 center is provided with first-stage double-absorption suction chamber 9 and secondary suction chamber
10, from first-stage double-absorption suction chamber 9 inwall, to secondary suction chamber 10 inwall, Circle-Array shows two spiral types to described delivery chamber 7 in the same direction
Runner 11, described spiral type runner 11 water side is connected with secondary suction chamber 10 through transition runner 12, described spiral type runner
For double-volute structure, it is beneficial to and the fluid entering in delivery chamber 7 is carried out radially force self-balanced, described secondary suction chamber 10 adopts
Loop configuration, is beneficial to minimizing installing space, and the located pin 13 in described delivery chamber 7 one end fixes grafting with import gland 6, another
End is fixedly connected with stage casing 2, and described import gland 6 one end contacts with the pump housing 1 fixation through facing flange 14, and the other end is through dividing partly
Ring 8 is fixedly connected with the pump housing 1, to reach compact, easy accessibility the effect of part.
This utility model can be provided with cowling panel 20, the shape of described cowling panel 20 and installation between described secondary suction chamber 10
Direction is matched with the flow direction of fluid, and to reach, aqueouss energy was good, reduce impact loss, thus reaching the work improving unit
Make the effect of efficiency.
This utility model when making, by original first-stage double-absorption suction chamber 9, transition runner 12, first-level guide blade 15 and secondary
Level suction chamber is integrated composition delivery chamber 7 of the present utility model, and by improving import gland 6, makes the located pin of import gland 6
13 position grafting with delivery chamber 7, and need not be mechanically connected, and integrally assemble compression with stage casing simultaneously, then by outside import gland
A point semi-ring in the circular orientation groove being provided with is strained and fixed with the pump housing, and is provided with binary vortices shape runner extruding interior, makes stream
The radial force of body reaches self-balancing, proceeds to secondary suction chamber by transition runner, due to increasing cowling panel in secondary suction chamber, comes
Regular fluid, makes fluid according to the flow curve direction of fluid, reducing impact loss, reducing the resistance of runner, thus ensureing
Unit work efficiency, significantly reduces net positive suction head, greatly improves service life.
This utility model, due to adopting said structure, has compact conformation, easy accessibility, Assembly part is few, cross aqueouss energy
Well, the advantages of high working efficiency, long service life.
Claims (2)
1. a kind of Double-casing double suction scroll casing type centrifugal multistage pump multiple centrifugal pump, including the pump housing, stage casing, pump shaft, double suction suction chamber, secondary suction
Room, first-stage double suction impeller and secondary impeller are it is characterised in that be provided with import gland, delivery chamber and point semi-ring, in described delivery chamber
The heart is provided with first-stage double-absorption suction chamber and secondary suction chamber, and described delivery chamber is indoor to secondary suction from first-stage double-absorption water suction chamber interior walls
Circle-Array shows two spiral type runners to wall in the same direction, and described spiral type runner water side is connected with secondary suction chamber through transition runner
Logical, described secondary suction chamber adopts loop configuration, and the located pin in described delivery chamber one end fixes grafting, the other end with import gland
It is fixedly connected with stage casing, described import gland one end is inconsistent with the pump housing through facing flange, the other end is solid with the pump housing through point semi-ring
Fixed connection.
2. a kind of Double-casing double suction scroll casing type centrifugal multistage pump multiple centrifugal pump according to claim 1 is it is characterised in that described transition flow
It is provided with cowling panel, the shape of described cowling panel and installation direction are matched with the flow direction of fluid between road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962516.9U CN205918607U (en) | 2016-08-29 | 2016-08-29 | Double -shell double suction spiral case formula multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962516.9U CN205918607U (en) | 2016-08-29 | 2016-08-29 | Double -shell double suction spiral case formula multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205918607U true CN205918607U (en) | 2017-02-01 |
Family
ID=57869209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620962516.9U Expired - Fee Related CN205918607U (en) | 2016-08-29 | 2016-08-29 | Double -shell double suction spiral case formula multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205918607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980053A (en) * | 2018-09-19 | 2018-12-11 | 中冶北方（大连）工程技术有限公司 | Ore dressing station-service sewage pump |
| CN109681435A (en) * | 2017-10-18 | 2019-04-26 | 上海凯士比泵有限公司 | A kind of centrifugal multistage pump multiple centrifugal pump of low-pressure pulsation |
-
2016
- 2016-08-29 CN CN201620962516.9U patent/CN205918607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681435A (en) * | 2017-10-18 | 2019-04-26 | 上海凯士比泵有限公司 | A kind of centrifugal multistage pump multiple centrifugal pump of low-pressure pulsation |
| CN108980053A (en) * | 2018-09-19 | 2018-12-11 | 中冶北方（大连）工程技术有限公司 | Ore dressing station-service sewage pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20190829 |