CN201314298Y - Single-shaft parallel centrifugal pump - Google Patents
Single-shaft parallel centrifugal pump Download PDFInfo
- Publication number
- CN201314298Y CN201314298Y CNU2008201705476U CN200820170547U CN201314298Y CN 201314298 Y CN201314298 Y CN 201314298Y CN U2008201705476 U CNU2008201705476 U CN U2008201705476U CN 200820170547 U CN200820170547 U CN 200820170547U CN 201314298 Y CN201314298 Y CN 201314298Y
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- pump
- delivery chamber
- cover
- chamber
- pump cover
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Abstract
The utility model relates to a single-shaft parallel centrifugal pump. At present, dual-media conveying adopts two centrifugal pumps in parallel, and the precision is not enough. A front delivery chamber and a rear delivery chamber are arranged on and in a pump body of the single-shaft parallel centrifugal pump, and two impellers are respectively arranged in the front delivery chamber and the rear delivery chamber. A front pump cover and a rear pump cover are respectively arranged at the two ends of the pump body, and a liquid inlet is respectively arranged on the front pump cover and the rear pump cover. A main shaft is penetrated through the front pump cover, the pump body and the rear pump cover, the two impellers are respectively connected with the main shaft in a fixed manner, a sealing piece is arranged between the two impellers, and the front delivery chamber is separated from the rear delivery chamber by the sealing piece. One end of the front delivery chamber and the rear delivery chamber of the pump body is respectively communicated with a front suction chamber and a rear suction chamber, the other ends are respectively communicated with two liquid outlets, and the front suction chamber and the rear suction chamber are respectively communicated with the two liquid inlets. The single-shaft parallel centrifugal pump can realize that two media respectively flow out from the two delivery chambers after the two independent impellers respectively do work at the two liquid inlets, so as to realize the conveying of two different media. The single-shaft parallel centrifugal pump has the characteristics of compact structure, small volume and low cost.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of centrifugal pump, specifically relates to the uniaxial paralleling centrifugal pump that a kind of pair of medium carried simultaneously.
Background technique
In the existing centrifugal pump, single entry pump has only an import, an outlet.Double suction pump has two imports, but has only an outlet.Therefore, carry when a centrifugal pump can not be realized two media, can only carry a kind of medium.But, may need two kinds of different mediums under certain pressure and flow, to react in fields such as chemical industry, oil and food.What adopt at present is the mode of two centrifugal pumps in parallel.But there is the inconsistent shortcoming of transient speed in two main shafts of parallel centrifugal pumps.When if chemical reaction is had relatively high expectations to two kinds of reactant mixed-precisions, two centrifugal pumps in parallel do not reach requirement.
For double suction pump, its impeller is actually by two impellers and welds together an integral body that constitutes back-to-back, and medium enters suction chamber from two imports respectively, flows out from a pumping chamber behind impeller.If carry two kinds of different media with double suction pump, then liquid can mix mutually at pumping chamber, and this is obviously improper.In order on a centrifugal pump, to realize carrying in two kinds of different mediums, just require a centrifugal pump to have two outlets and two imports, two overlap independently flow passage components.
Summary of the invention
The purpose of this utility model provides a kind of uniaxial paralleling centrifugal pump that can realize that two media are carried simultaneously.
The utility model comprises the pump housing, and the pump housing is provided with two liquid outlets, delivery chamber and back delivery chamber before being symmetrically arranged with in the pump housing, and two impellers are separately positioned in preceding delivery chamber and the back delivery chamber.Pump housing two ends are respectively arranged with the front pump cover and the rear pump cover of hollow structure, respectively are provided with a liquid entering hole on front pump cover and the rear pump cover, and the inner space of front pump cover is preceding suction chamber, and the inner space of rear pump cover is the back suction chamber.Two liquid entering holes are horizontally set on the same side of the pump housing, and perpendicular to main shaft.Main shaft passes front pump cover, the pump housing and rear pump cover setting successively.The front pump cover end is set with front cover, the rear pump cover end is set with rear end cover, and an end of main shaft is connected with rear end cover by rear bearing, and the other end passes front cover and is connected by coupling with motor, and main shaft is connected with front cover by fore bearing.Two impellers are fixedlyed connected with main shaft respectively, are provided with Sealing between two impellers, and preceding delivery chamber and back delivery chamber are isolated by Sealing, and Sealing is nested with on main shaft.One end of the preceding delivery chamber of the pump housing is communicated with preceding suction chamber, an end of back delivery chamber is communicated with the back suction chamber, before the other end of delivery chamber and back delivery chamber be communicated with corresponding two liquid outlets respectively, preceding suction chamber and back suction chamber are communicated with corresponding two liquid entering holes respectively.
The external diameter ratio of described two impellers is 1:0.9～1.1.
Described Sealing is packing seal structure or mechanical seal structure.
The utility model has two delivery chambers, and two impellers also are to be separately fixed on the main shaft, can realize that two different media flow out from two delivery chambers through the work done of two independent impellers difference from two liquid entering holes respectively, thereby has realized the conveying of two kinds of different mediums.The utility model overall structure adopts symmetric design, and two impellers " back-to-back " form is installed in the middle of the main shaft, separates by Sealing, and the mode of " back-to-back " can effectively be eliminated axial force.The utility model compact structure has reduced the volume of centrifugal pump, has alleviated cost, need to can be applicable to two kinds of different mediums to mix under certain pressure and flow or the association areas such as chemical industry, oil and food of chemical reaction.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be among Fig. 1 A-A to schematic cross-section;
Fig. 3 be among Fig. 1 B-B to schematic cross-section.
Embodiment
Shown in Fig. 1,2 and 3, uniaxial paralleling centrifugal pump comprises the pump housing 13, and the pump housing is provided with two liquid outlets 14, and delivery chamber 15 and back 12, two impellers 5 of delivery chamber and 7 are separately positioned in preceding delivery chamber 15 and the back delivery chamber 12 before being symmetrically arranged with in the pump housing.The pump housing 13 two ends are respectively arranged with the front pump cover 16 and the rear pump cover 11 of hollow structure, respectively are provided with a liquid entering hole 18 on front pump cover 16 and the rear pump cover 11, and the inner space of front pump cover 16 is preceding suction chamber 4, and the inner space of rear pump cover 11 is a back suction chamber 8.Two liquid entering holes 18 are horizontally set on the same side of the pump housing 13, and perpendicular to main shaft 3.Main shaft 3 passes front pump cover 16, the pump housing 13 and rear pump cover 11 successively and is provided with.Front pump cover 16 ends are set with front cover 17, rear pump cover 11 ends are set with rear end cover 10, one end of main shaft 3 is connected with rear end cover 10 by rear bearing 9, the other end passes front cover 17 and is connected by coupling 1 with motor, and main shaft 3 is connected with front cover 17 by fore bearing 2.Two impellers 5 are fixedlyed connected with main shaft 3 respectively with 7, are provided with Sealing 6 between two impellers, and preceding delivery chamber 15 and back delivery chamber 12 are isolated by Sealing 6, and Sealing 6 is nested with on main shaft 3.One end of the preceding delivery chamber 15 of the pump housing 13 is communicated with preceding suction chamber 4, an end of back delivery chamber 12 is communicated with back suction chamber 8, before the other end of delivery chamber 15 and back delivery chamber 12 be communicated with corresponding two liquid outlets 14 respectively, preceding suction chamber 4 and back suction chamber 8 are communicated with corresponding two liquid entering holes 18 respectively.
During pump work, suction chamber 4 and back suction chamber 8 before two kinds of different media are entered by two liquid entering holes respectively, two impeller rotations on the motor rotating band moving axis, liquid obtains the pressure energy through impeller 5 and the acting of 7 centrifugal force, respectively two kinds of different media is extruded from two liquid outlets 14 through forward and backward delivery chamber.The pump overall structure adopts the symmetric form design, and outward appearance is short and sweet, is easy to installation and maintenance.Impeller adopts back-to-back form can also eliminate the axial force and the radial force of impeller, has improved the reliability of pump operation.
Claims (3)
1, a kind of uniaxial paralleling centrifugal pump comprises the pump housing, it is characterized in that: the pump housing is provided with two liquid outlets, delivery chamber and back delivery chamber before being symmetrically arranged with in the pump housing, and two impellers are separately positioned in preceding delivery chamber and the back delivery chamber; Pump housing two ends are respectively arranged with the front pump cover and the rear pump cover of hollow structure, respectively be provided with a liquid entering hole on front pump cover and the rear pump cover, the inner space of front pump cover is preceding suction chamber, the inner space of rear pump cover is the back suction chamber, two liquid entering holes are horizontally set on the same side of the pump housing, and perpendicular to main shaft; Main shaft passes front pump cover, the pump housing and rear pump cover setting successively, the front pump cover end is set with front cover, the rear pump cover end is set with rear end cover, one end of main shaft is connected with rear end cover by rear bearing, the other end passes front cover and is connected by coupling with motor, and main shaft is connected with front cover by fore bearing; Two impellers are fixedlyed connected with main shaft respectively, are provided with Sealing between two impellers, and preceding delivery chamber and back delivery chamber are isolated by Sealing, and Sealing is nested with on main shaft; One end of the preceding delivery chamber of the pump housing is communicated with preceding suction chamber, an end of back delivery chamber is communicated with the back suction chamber, before the other end of delivery chamber and back delivery chamber be communicated with corresponding two liquid outlets respectively, preceding suction chamber and back suction chamber are communicated with corresponding two liquid entering holes respectively.
2, a kind of uniaxial paralleling centrifugal pump as claimed in claim 1 is characterized in that: the external diameter ratio of described two impellers is 1:0.9～1.1.
3, a kind of uniaxial paralleling centrifugal pump as claimed in claim 1 is characterized in that: described Sealing is packing seal structure or mechanical seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201705476U CN201314298Y (en) | 2008-12-19 | 2008-12-19 | Single-shaft parallel centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201705476U CN201314298Y (en) | 2008-12-19 | 2008-12-19 | Single-shaft parallel centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201314298Y true CN201314298Y (en) | 2009-09-23 |
Family
ID=41126091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201705476U Expired - Lifetime CN201314298Y (en) | 2008-12-19 | 2008-12-19 | Single-shaft parallel centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201314298Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927041A (en) * | 2012-11-19 | 2013-02-13 | 山东颜山泵业有限公司 | Four-suction axially-split centrifugal pump |
-
2008
- 2008-12-19 CN CNU2008201705476U patent/CN201314298Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927041A (en) * | 2012-11-19 | 2013-02-13 | 山东颜山泵业有限公司 | Four-suction axially-split centrifugal pump |
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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: 20090923 |
|
| CX01 | Expiry of patent term |