CN201407181Y - Axial force self-balance multi-stage centrifugal pump - Google Patents
Axial force self-balance multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN201407181Y CN201407181Y CN2009200847192U CN200920084719U CN201407181Y CN 201407181 Y CN201407181 Y CN 201407181Y CN 2009200847192 U CN2009200847192 U CN 2009200847192U CN 200920084719 U CN200920084719 U CN 200920084719U CN 201407181 Y CN201407181 Y CN 201407181Y
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- pump chamber
- axial force
- pump
- stator
- centrifugal pump
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Abstract
The utility model provides an axial force self-balance multi-stage centrifugal pump, which achieves the self balance of an impeller in the axial direction through symmetrically arranging the impellerin a pump body, namely axial force generated by each stage of impeller is mutually balanced out, mechanical friction generated by a multi-stage centrifugal pump during the running process because of axial force is reduced, fault-free work time of the centrifugal pump is prolonged, and the device maintenance cost of a user is lowered.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, especially a kind of axial force self-balancing multiple stage centrifugal pump.
Background technique
Pump of a great variety can be divided into vane type oil pump, positive displacement pump and other type of pump by action principle, and centrifugal pump belongs to a kind of of vane type oil pump, with single stage centrifugal pump relatively, multistage centrifugal pump is because its using scope is wider, the market demand share is bigger.It is the mode that impeller is arranged in turn that traditional multistage centrifugal pump design is adopted, pump in use can produce axial force, usually adopt Balance disc or balancing drum mechanism to carry out balance to the processing of equilibrant, but because equilibrant can't be eliminated fully, pump in use balanced controls always produces wearing and tearing, and then cause the wearing and tearing of other rotor component, thereby influence the normal working life of pump, simultaneously, because the part of balanced controls belongs to easily damaged parts, need often to change, increased user's device maintenance expense.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of axial force self-balancing multiple stage centrifugal pump, can realize axial force self-balancing in operation process.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of axial force self-balancing multiple stage centrifugal pump, comprise the pump housing and turnbuckle, first stage impeller is installed in by axle in the leading portion of the pump housing, and a plurality of lobus sinister wheels and a plurality of lobus dexter wheel symmetry are installed on the axle, it is indoor that a plurality of lobus sinister wheels are installed in front pump, a plurality of lobus dexter wheels are installed in the pump chamber of back, and leading portion is communicated with preceding pump chamber, and preceding pump chamber is communicated with back segment by the commutation runner, back segment is communicated with the back pump chamber, and back pump chamber is communicated with the Spit Section.
When current pump chamber and the back impeller in the pump chamber add up to odd number, many one-level impellers were the lobus sinister wheel, and it is indoor to be installed in front pump, were positioned on the axle of back segment balance set is installed.
Front pump is indoor to be provided with left stator, and left stator cooperates with the lobus sinister wheel, and preceding pump chamber is equipped with left final stage stator near the position of Spit Section, is provided with right stator in the back pump chamber, and right stator is taken turns with lobus dexter and cooperated, and the position that back pump chamber is communicated with the Spit Section is equipped with right final stage stator.
Described first stage impeller is a double-entry impeller.
The suction port of leading portion becomes substantially horizontal, and the discharge opening of Spit Section becomes direction vertically upward.
The axial force self-balancing multiple stage centrifugal pump that the utility model provides, by impeller is pressed the symmetrical manner setting in the pump housing, realized the self balancing of axial force, be that the axial force that impeller at different levels produces is cancelled out each other, the mechanical friction of having avoided multistage centrifugal pump in operation process, to produce because of axial force, prolong the time between failures of centrifugal pump, reduced user's device maintenance expense.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model structural representation.
Embodiment
In Fig. 1, a kind of axial force self-balancing multiple stage centrifugal pump, comprise the pump housing 17 and turnbuckle 16, first stage impeller 2 is installed in by axle 15 in the leading portion 3 of the pump housing 17, and a plurality of lobus sinister wheels 4 and a plurality of lobus dexter are taken turns 10 symmetries and be installed on the axle 15, a plurality of lobus sinister wheels 4 are installed in the preceding pump chamber 5, a plurality of lobus dexter wheels 10 are installed in the pump chamber 18 of back, and leading portion 3 is communicated with preceding pump chamber 5, and preceding pump chamber 5 is communicated with back segment 14 by commutation runner 13, back segment 14 is communicated with back pump chamber 18, and back pump chamber 18 is communicated with Spit Section 8.
When the impellers in current pump chamber 5 and the back pump chamber 18 add up to odd number, many one-level impellers were lobus sinister wheel 4, before being installed in the pump chamber 5, be positioned on the axle 15 of back segment 14 balance set 12 is installed.Be provided with left stator 6 in the preceding pump chamber 5, left side stator 6 cooperates with lobus sinister wheel 4, and preceding pump chamber 5 is equipped with left final stage stator 7 near the position of Spit Section 8, is provided with right stator 11 in the back pump chamber 18, right stator 11 cooperates with lobus dexter wheel 10, and the position that back pump chamber 18 is communicated with Spit Section 8 is equipped with right final stage stator 9.Described first stage impeller 2 is a double-entry impeller.1 one-tenth substantially horizontal of the suction port of leading portion 3, the discharge opening of Spit Section 8 becomes direction vertically upward.
In the present embodiment, the fore bearing of pump adopts selfaligning ball bearing, and the rear bearing of pump adopts two deep groove ball bearings, installs back-to-back.Front and back bearings is all lubricated with butter.Axle envelope part adopts soft packing seal, and adopts the composite filling technology on this basis, leakage rate can be dropped to minimum.On the axle 15 of leading portion 3 the chopped-off head seal ring is installed, the axle 15 between preceding pump chamber 5 and the Spit Section 8 is equipped with the stage casing seal ring, on left stator 6 and the right stator 11 the stator cover is installed.At different levels with turnbuckle 16 lockings.
During work, by comprising motor, diesel engines etc. drive axle 15 rotations at interior power source, impellers at different levels on the axle 15 rotate thereupon, liquid enters from suction port 1, send into leading portion 3 through first stage impeller 2, first stage impeller 2 has adopted double-entry impeller, improved the cavitation performance of pump, also avoided simultaneously the generation of axial force, pump chamber 5 before liquid enters into from leading portion 3, in preceding pump chamber 5, increase pressure energy and kinetic energy step by step, enter commutation runner 13 through left final stage stator 7, and enter back segment 14 through commutation runner 13 by lobus sinister wheel 4 and 6 cooperations of left stator, and from back segment 14 enter the back pump chamber 18, liquid increases pressure energy and kinetic energy step by step by lobus dexter wheel 10 and 11 cooperations of right stator in the pump chamber 18 of back, enter Spit Section 8 through right final stage stator 9 and discharge from discharge opening, is transported to needed place by the road.The axial force that lobus sinister wheel 4 and lobus dexter wheel 10 produce, because direction is cancelled each other mutually on the contrary, when the impeller in current pump chamber 5 and the back pump chamber 18 adds up to odd number, in the pump chamber 5, only need on axle 15, to set up balance set 12 and eliminate the axial force that this grade impeller produces before many one-level impellers just are installed in.
Claims (5)
1, a kind of axial force self-balancing multiple stage centrifugal pump, comprise the pump housing (17) and turnbuckle (16), it is characterized in that: first stage impeller (2) is installed in the leading portion (3) of the pump housing (17) by axle (15), a plurality of lobus sinister wheels (4) and a plurality of lobus dexter wheel (10) symmetry are installed on the axle (15), a plurality of lobus sinister wheels (4) are installed in the preceding pump chamber (5), a plurality of lobus dexter wheels (10) are installed in the back pump chamber (18), leading portion (3) is communicated with preceding pump chamber (5), preceding pump chamber (5) is communicated with back segment (14) by commutation runner (13), back segment (14) is communicated with back pump chamber (18), and back pump chamber (18) is communicated with Spit Section (8).
2, a kind of axial force self-balancing multiple stage centrifugal pump according to claim 1, it is characterized in that: when the impeller in current pump chamber (5) and the back pump chamber (18) adds up to odd number, many one-level impellers are lobus sinister wheel (4), be installed in the preceding pump chamber (5), be positioned on the axle (15) of back segment (14) balance set (12) is installed.
3, a kind of axial force self-balancing multiple stage centrifugal pump according to claim 1 and 2, it is characterized in that: be provided with left stator (6) in the preceding pump chamber (5), left side stator (6) cooperates with lobus sinister wheel (4), preceding pump chamber (5) is equipped with left final stage stator (7) near the position of Spit Section (8), be provided with right stator (11) in the back pump chamber (18), right stator (11) cooperates with lobus dexter wheel (10), and the position that back pump chamber (18) is communicated with Spit Section (8) is equipped with right final stage stator (9).
4, a kind of axial force self-balancing multiple stage centrifugal pump according to claim 1 is characterized in that: described first stage impeller (2) is a double-entry impeller.
5, a kind of axial force self-balancing multiple stage centrifugal pump according to claim 1 is characterized in that: the suction port (1) of leading portion (3) becomes substantially horizontal, and the discharge opening of Spit Section (8) becomes direction vertically upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200847192U CN201407181Y (en) | 2009-04-03 | 2009-04-03 | Axial force self-balance multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200847192U CN201407181Y (en) | 2009-04-03 | 2009-04-03 | Axial force self-balance multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407181Y true CN201407181Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200847192U Expired - Fee Related CN201407181Y (en) | 2009-04-03 | 2009-04-03 | Axial force self-balance multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407181Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818732A (en) * | 2010-04-19 | 2010-09-01 | 江苏大学 | Centrifugal charging pump for use in nuclear power plant |
-
2009
- 2009-04-03 CN CN2009200847192U patent/CN201407181Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818732A (en) * | 2010-04-19 | 2010-09-01 | 江苏大学 | Centrifugal charging pump for use in nuclear power plant |
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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 |
Granted publication date: 20100217 Termination date: 20170403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |