CN2616721Y - Segmental multi-stage centrifugal water pump - Google Patents
Segmental multi-stage centrifugal water pump Download PDFInfo
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- CN2616721Y CN2616721Y CN 03235288 CN03235288U CN2616721Y CN 2616721 Y CN2616721 Y CN 2616721Y CN 03235288 CN03235288 CN 03235288 CN 03235288 U CN03235288 U CN 03235288U CN 2616721 Y CN2616721 Y CN 2616721Y
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- stage casing
- stator
- dividing plate
- stage
- circle
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Abstract
The utility model relates to a centrifugal pump. The centrifugal pump has a motor and a water pump connected into a whole via a motor join base, a shaft joint is used for driving between the motor and the pump, a flow component comprises an inlet section, a middle section, an impeller, an entrance bucket and an outlet section, which is characterized in that the inlet section and the outlet section are simplified as a cylindrical crust and a bracing plate is added at the bottom of the crust, the middle section of the pump body is a step cylinder and is connected with the inlet section and the outlet section via the two ends of the step section, the middle section is provided with the entrance bucket, a clapboard, an O-shaped circle, an impeller and a fixed ring. The middle section and outer diameter place of the next level impeller inlet is provided with a floating seal device, to reduce the leak back water capacity between levels.
Description
Technical field:
The utility model relates to the centrifugal pump field.
Background technique:
Traditional sectional type multi-stage centrifugal pump, be by driven by motor, adopt the flexible coupling transmission between pump shaft and the motor, run up by motor, water enters in the inlet segment from the water intake of pump, again through the impeller in the stage casing, stator, after the final stage stator enters the spirality water exit end, flow out from water outlet at last, reach the purpose of drawing water.The water pump of this structure is for balancing axial thrust, and system will have return pipe toward contact, has therefore reduced the working efficiency of water pump, the water-in and water-out segment structure complexity of this class formation of while, and shaping processing difficulties, manufacturing efficiency are not high.Also there is the minority multistage pump to adopt the punching press stainless steel to be shaped now, but its complex structure, except that the sectional type stage casing is adopted in the centre, the periphery also will add a round water jacket, cause leakage easily owing to the poor sealing between the stage casing, thereby reduced working efficiency, cost of production is also high.These unfavorable factors have limited promoting the use of of punching press stainless steel sectional type multi-stage centrifugal pump.
Summary of the invention:
The utility model purpose is to overcome the defective that conventional art exists, improve the structure of traditional sectional type multi-stage centrifugal pump, make it to adopt the punching press deep-drawing technique to be made, have simultaneously that simple in structure, easy processing, cost of production are low, technical parameter guarantees advantages such as reliable performance easily.
The scheme that the utility model purpose realizes is: the sectional type multi-stage centrifugal pump that is provided is by the motor connection seat motor and water pump to be fused, adopt the coupling transmission between motor and the pump, flow passage components mainly comprise inlet segment, the stage casing, impeller, stator, water exit end, it is characterized in that and to advance, water exit end be reduced to the step cylindrical housing and in inlet segment and water exit end the nose circle mouth be fixed with circular fagging, respectively inlet segment is sleeved on the step of base by the fagging seam and water exit end is sleeved on the step in final stage stage casing, pump housing stage casing is that stepped shape is cylindric and be connected with water exit end with inlet segment by its step part two ends, when the stage casing is when being made up by plurality of sections, also be to constitute between each section by drawing extremely by pull bar again after the step part connection separately, be fixed with sub-propeller on the pump shaft in the chamber of water exit end, this sub-propeller and pump shaft rotate synchronously, in stage casing and next stage impeller intake outer radius floating seal is housed, to reduce the leakage backwater amount of inter-stage, improve the working efficiency of water pump.The model water pump of the different lifts of same flow can obtain by the quantity that changes the stage casing.
The utility model structure is applicable to the centrifugal water pump of horizontal, vertical, different lift and flow.
Description of drawings:
Fig. 1 is an overall structure sectional view of the present utility model.
Fig. 2 is the sectional view of Fig. 1 inlet segment member.
Fig. 3 is the sectional view of Fig. 1 stage casing member.
Fig. 4 is Fig. 1 water exit end member sectional view.
Fig. 5 is Fig. 1 sub-propeller member sectional view.
Fig. 6 is the sectional view of Fig. 1 floating seal.
Fig. 7 is the structure sectional view of first kind of embodiment of the structure assembly relation of Fig. 1 stage casing and its inner body.
Fig. 8 is a stator member sectional view among Fig. 7.
Fig. 9 is the dividing plate I member sectional view of Fig. 7.
Figure 10 is Fig. 7 dividing plate II member sectional view.
Figure 11 is the structure sectional view of second kind of embodiment of the structure assembly relation of Fig. 1 stage casing and its inner body.
Figure 12 is the structure sectional view of the third embodiment of the structure assembly relation of Fig. 1 stage casing and its inner body.
Figure 13 is the sectional view of Figure 12 partition component.
Figure 14 is the structure sectional view of the 4th kind of embodiment of the structure assembly relation of Fig. 1 stage casing and its inner body.
Figure 15 is the sectional view of Figure 14 partition component.
Figure 16 is the sectional view of Figure 14 stage casing sleeve member.
Figure 17 is the structure sectional view of the 5th kind of embodiment of the structure assembly relation of Fig. 1 stage casing and its inner body.
Figure 18 is the sectional view of Figure 17 stator member.
Centrifugal water pump is by constituting with lower member shown in institute's drawings attached: base 1, sliding bearing 2, pump shaft 3, intake pipe 4, inlet segment 5, dividing plate 6, impeller 7, stator 8, stage casing 9, floating seal 10, water exit end 11, outlet pipe 12, sub-propeller 13, middle base 14, mechanical seal 15, bearing 16, motor connection seat 17, coupling 18, motor 19, screw rod 20, retaining ring 21, O type circle 22, O type circle 23, O type circle 24, return guide vane 25, guide-leaf plate 26, guide vane 27, bolt 28, stage casing lining 29.
Embodiment:
Embodiment 1:
As shown in Figure 1, this embodiment's pump motor connection seat 17 fuses motor 19 and water pump by middle base 14.Adopt coupling 18 transmissions between pump and the motor 19.Impeller 7 is fixed on the pump shaft 3 by key connecting, and the sub-propeller 13 of balancing axial thrust also is to be fixed on the pump shaft 3 by key connecting.Pump shaft 3 is equipped with two angular contact ball bearings of installing face-to-face 16 by motor side.By base end one sliding bearing 2 is housed, and the part on the axle is made axial restraint with round nut.The component that assemble in order between base 1 and the middle base 14 are: inlet segment 5, stage casing 9 and its inner body, water exit end 11, floating seal 10, wherein inlet segment 5 is illustrated in figure 4 as the step cylinder-like shell, nose circle mouth is fixed with a circular fagging in it, and is sleeved on by the fagging seam on the step of base 1; Stage casing 9 is illustrated in figure 3 as a step cylinder-like shell structure, and its inside is equipped with split type stator 8, dividing plate 6I, dividing plate 6II, O type circle 23, O type circle 24, impeller 7, retaining ring 21, O type circle 22 as shown in Figure 7.Split type stator 8 is to be made of guide vane 27, return guide vane 25 and guide-leaf plate 26, is fixed on the upper top of circle in the stage casing 9 by return guide vane 25.Dividing plate 6I by circle engage sleeves in its cylindrical and the stage casing 9 be contained in stator 8 below; O type circle 23 is contained in the groove that stage casing 9 inwalls and dividing plate 6I form, and is subjected to the extruding of dividing plate 6 II, and dividing plate 6II also is contained in below the dividing plate 6I by justifying engage sleeves in its cylindrical and the stage casing 9; Retaining ring 21 is positioned at stage casing 9 cover top portion with O type circle 22, and O type circle 24 is contained in the groove of dividing plate 6II and inlet segment 5 or the formation of upper level stage casing 9 steps, and impeller 7 is contained on the axle 3 by key connecting; The seam of stage casing 9 by dividing plate 6II is sleeved on the step in the step of inlet segment 5 or upper level stage casing 9.Water exit end 11 is illustrated in figure 2 as the structure that a step cylinder-like shell and interior nose circle mouth thereof are fixed with a circular fagging, and it is sleeved on by the fagging seam on the step in final stage stage casing 9, and its step is nested together with the seam of middle base 14 again.Floating seal 10 is by floating seal retaining ring 21 floating seal to be positioned at O type circle 22 on the housing in inlet segment 5 and stage casing 9 as shown in Figure 6, cooperates with impeller 7 water intake external diameters and is shaped.Screw rod 20 is fixedly connected base 1 and middle base 14 and the component between them and is integral, thereby constitutes pump body structure.
During work, motor 19 high speed rotating drive impeller 7 high speed rotating on the pump shaft 3, water enters inlet segment 5 by intake pipe 4, impeller 7 by high speed rotating obtains energy, becomes press water, collects press water through stator 8, enter next stage impeller 7 again, continue to obtain energy (according to the difference of lift, the progression of flowing through is also different), after final stage stator 8 enters water exit end 11, flow out by outlet pipe 12 again, reach the purpose of drawing water.During work, sub-propeller 13 is thrown the press water by the middle base boss face in the water exit end away with the high speed rotating of pump shaft 3, makes the pressure of pressure ratio sub-propeller 13 another sides between sub-propeller 13 and the boss face little, thereby reaches the purpose of balancing axial thrust.
Embodiment 2:
Be the embodiment of second kind of embodiment of the utility model as shown in figure 11, itself and embodiment's 1 difference is that the stator 8 in its stage casing 9 is integrated type stator, i.e. stator 8 unitary mouldings.Stator 8 is fixed on circular top part in the stage casing 9 by bolt 28.
Embodiment 3:
Be the embodiment of the third embodiment of the utility model shown in Figure 12～13, itself and embodiment's 1 difference is that major parts have stator 8, dividing plate 6, O type circle 23, O type circle 24, impeller 7, retaining ring 21 and O type circle 22 in the stage casing 9.Wherein stator also is whole stator, and it is sleeved in the dividing plate 6, installs in the stage casing 9 with dividing plate 6 covers then; O type circle 23 is contained in the groove of dividing plate 6 upper ends and the formation of stage casing 9 inwalls.O type circle 24 is contained in the groove that the step in the step of dividing plate 6 lower ends and inlet segment 5 or upper level stage casing 9 forms.
Embodiment 4:
Be the embodiment of the 4th kind of embodiment shown in Figure 14 to 16, itself and embodiment's 1 difference is that major part has stator 8, dividing plate 6, O type circle 23, O type circle 24, impeller 7, retaining ring 21 and O type circle 22, stage casing lining 29 in the stage casing.The cylindrical of cylindric stage casing lining 29 cooperates with circle in the stage casing 9, is sleeved in the stage casing 9.O type circle 23 is contained in the groove of stage casing lining 29 and the formation of stage casing 9 inwalls.Integrated type stator 8 is sleeved in the stage casing lining 29, and the top is adjacent to stage casing 9 inner top surfaces.Dividing plate 6 also is sleeved in the stage casing lining 29, and the top is adjacent to stator 8.O type circle 24 is contained in the groove that the lower end of stage casing lining 29 and inlet segment 5 steps or upper level stage casing 9 steps form, and finish by the round seam of stage casing lining 29 lower ends with the location in inlet segment 5 or upper level stage casing 9 in stage casing 9.
Embodiment 5:
Be the embodiment of the 5th kind of embodiment of the utility model shown in Figure 17 to 18, itself and embodiment's 1 difference is that major parts have stator 8, dividing plate 6, O type circle 23, O type circle 24, impeller 7, retaining ring 21 and O type circle 22 in the stage casing 9.Wherein stator 8 as shown in figure 18, except that the front and back guide blade sheet of routine, stator 8 peripheries are circular outer walls, stator 8 is fitted together by circle engage sleeves in circular cylindrical and the stage casing 9.O type circle 23 is contained in the groove of stator 8 outer walls upper end and the formation of stage casing 9 inwalls.Dividing plate 6 is sleeved in the stator 8 annular chamber walls to be close to the guide vane sheet.O type circle 24 is contained in the groove of stator 8 annular wall bottoms and inlet segment 5 steps or the formation of upper level stage casing 9 steps.Be to locate suit between stage casing 9 and inlet segment 5 or the upper level stage casing 9 by the bottom inner stopper of stator 8 annular outer walls.
Claims (6)
1, a kind of sectional type multi-stage centrifugal pump, by the motor connection seat motor and water pump are fused, adopt the coupling transmission between motor and the pump, flow passage components mainly comprise inlet segment (5), stage casing (9), impeller (7) stator (8), water exit end (11), it is characterized in that inlet segment (5) and water exit end (11) for cylindrical housing and in inlet segment (5) and water exit end (11) the nose circle mouth be fixed with circular fagging, respectively inlet segment (5) is sleeved on by the fagging seam on the step of base (1) and and is sleeved on the step of final stage stage casing (9) water exit end (11), stage casing (9) is that stepped shape is cylindric and be connected with water exit end (11) with inlet segment (5) by its step part two ends, stage casing (9) is when being combined into by plurality of sections, step part by separately between each stage casing (9) is formed by connecting after connecting, be fixed with sub-propeller (13) on the pump shaft in the chamber of water exit end (11) (3), sub-propeller (13) rotates synchronously with pump shaft (3), (9) are equipped with floating seal (10) with next stage impeller (7) water intake outer radius in the stage casing, floating seal (10) is O type circle to be positioned on the housing of inlet segment (5) and stage casing (9) by floating seal retaining ring (21), cooperates with impeller (7) water intake external diameter and is shaped.
2, according to the described sectional type multi-stage centrifugal pump of claim 1, it is characterized in that in stage casing (9), being equipped with split type stator (8), dividing plate (6) I, dividing plate (6) II, O type circle (23), O type circle (24), impeller (7), retaining ring (21), O type circle (22), split type stator (8) is by guide vane (27), return guide vane (25) and guide-leaf plate (26) constitute, dividing plate (6) I is contained in below the stator (8) by circle engage sleeves in its cylindrical and stage casing (9), O type circle (23) is contained in the groove of stage casing (9) inwall and dividing plate (6) I formation, and be subjected to the extruding of dividing plate (6) II, dividing plate (6) II by circle engage sleeves in its cylindrical and stage casing (9) be contained in dividing plate (6) I below, O type circle (24) is contained in the groove of dividing plate (6) II and inlet segment (5) or the formation of upper level stage casing (9) step, and impeller (7) is contained on the pump shaft (3) by key connecting.
3, according to claim 1 or 2 described sectional type multi-stage centrifugal pumps, the stator (8) that it is characterized in that being contained in the stage casing (9) is integrated type, and whole stator (8) is fixed on the interior circular top part in stage casing (9) by bolt (28).
4, according to claim 1 or 2 described sectional type multi-stage centrifugal pumps, it is characterized in that stator (8) is sleeved in the dividing plate (6) for integrated type, and in dividing plate (6) is sleeved on stage casing (9).
5, according to claim 1 or 2 described sectional type multi-stage centrifugal pumps, it is characterized in that in stage casing (9), also being equipped with stage casing lining (29), circle is sleeved in the stage casing (9) in the cylindrical of cylindric stage casing lining (29) and stage casing (9), O type circle (23) is contained in the groove of stage casing lining (29) upper end and the formation of stage casing (9) inwall, integrated type stator (8) and dividing plate (6) all are sleeved in the stage casing lining (29), O type circle (24) is contained in the groove that the lower end of stage casing lining (29) and inlet segment (5) step or upper level stage casing (9) step form, and stage casing (9) are to be formed by connecting by justifying seam with the location of inlet segment (5) or upper level stage casing (9) stage casing lining (29) the lower end in.
6, according to claim 1 or 2 described sectional type multi-stage centrifugal pumps, it is characterized in that stator (8) periphery is a circular outer wall, be fitted together by circle engage sleeves in its circular cylindrical and stage casing (9), O type circle 23 is contained in the groove of stator (8) outer wall upper end and the formation of stage casing (9) inwall, dividing plate (6) is sleeved in stator (8) annular wall to be close to stator (8), O type circle (24) is contained in the groove of stator (8) annular wall bottom and inlet segment (5) step or the formation of upper level stage casing (9) step, and the bottom inner stopper by stator (8) annular outer wall between stage casing (9) and inlet segment (5) or upper level stage casing (9) is located suit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03235288 CN2616721Y (en) | 2003-01-16 | 2003-01-16 | Segmental multi-stage centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03235288 CN2616721Y (en) | 2003-01-16 | 2003-01-16 | Segmental multi-stage centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2616721Y true CN2616721Y (en) | 2004-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03235288 Expired - Fee Related CN2616721Y (en) | 2003-01-16 | 2003-01-16 | Segmental multi-stage centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2616721Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832272A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| CN102734174A (en) * | 2012-07-05 | 2012-10-17 | 南京工业大学 | Two-stage and two-discharge graphite pump |
| CN102852811A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN102852812A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN101493092B (en) * | 2008-01-25 | 2013-07-17 | 株式会社日立产机系统 | Multi-stage pump |
| CN106122030A (en) * | 2016-06-27 | 2016-11-16 | 华北水利水电大学 | A kind of rated lift type variable horizontal type multi-stage pump |
-
2003
- 2003-01-16 CN CN 03235288 patent/CN2616721Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493092B (en) * | 2008-01-25 | 2013-07-17 | 株式会社日立产机系统 | Multi-stage pump |
| CN101832272A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| US8568093B2 (en) | 2009-03-10 | 2013-10-29 | Grundfos Management A/S | Multi-stage centrifugal pump assembly (bearing carrier) |
| CN101832272B (en) * | 2009-03-10 | 2014-04-09 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| CN102852811A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN102852812A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN102852811B (en) * | 2011-06-27 | 2015-08-26 | 王喜冬 | Cemented carbide idle running can be connected amphibious vertical pump for mine |
| CN102852812B (en) * | 2011-06-27 | 2015-11-25 | 王喜冬 | Cemented carbide idle running can be connected amphibious vertical pump for mine |
| CN102734174A (en) * | 2012-07-05 | 2012-10-17 | 南京工业大学 | Two-stage and two-discharge graphite pump |
| CN106122030A (en) * | 2016-06-27 | 2016-11-16 | 华北水利水电大学 | A kind of rated lift type variable horizontal type multi-stage pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |