CN211449050U - Vertical multi-stage centrifugal pump - Google Patents
Vertical multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN211449050U CN211449050U CN201921723595.8U CN201921723595U CN211449050U CN 211449050 U CN211449050 U CN 211449050U CN 201921723595 U CN201921723595 U CN 201921723595U CN 211449050 U CN211449050 U CN 211449050U
- Authority
- CN
- China
- Prior art keywords
- pump
- bearing
- centrifugal pump
- multistage centrifugal
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a vertical multistage centrifugal pump, the motor that solves prior art existence down the bearing bear the interior pressure that is full of water production and the easy problem of damaging of divertor, the technical scheme of adoption: set up the bearing room on the pump mount, the bearing sets up down in the bearing room, just bearing room below is left empty, set up the decompression passageway on the pump mount, the last water outlet channel of decompression passageway intercommunication pump mount with the below space of bearing room down. The method has the following effects: set up the pressure reducing channel on the pump seat, water outlet channel and lower bearing chamber on the pressure reducing channel intercommunication pump seat make have ascending thrust down in the bearing chamber, and partial decurrent pressure is offset to this thrust that makes progress, reduces the pressure that the lower bearing bore, improves the life of lower bearing, and then improves the reliability of vertical multistage centrifugal pump whole operation.
Description
Technical Field
The utility model relates to a vertical multistage centrifugal pump especially relates to a reduce the vertical multistage centrifugal pump that epaxial lower bearing of impeller bore downward pressure.
Background
As shown in fig. 1, the vertical multistage centrifugal pump includes a pump base, a pump head fitted to the pump base, a pump body connecting the pump base and the pump head, a flow guider and an impeller assembly disposed in the body, an impeller shaft fitted to the impeller assembly, a motor shaft connected to the impeller shaft via a coupling, and a motor driving the motor shaft. The working principle of the vertical multistage centrifugal pump is as follows: the impeller shaft is driven to operate by the high-speed rotation of the motor, the impeller shaft drives the impeller assembly to work, and the impeller assembly pushes water.
When the vertical multi-stage centrifugal pump is in an operating state, the inside of the fluid director is filled with water, a downward axial force is formed on the impeller shaft under the combination of gravity and pressure, and the downward axial force acts on the lower bearing on the impeller shaft, so that the service life of the lower bearing and the reliability of the overall operation of the vertical multi-stage centrifugal pump are influenced.
Disclosure of Invention
An object of the utility model is to solve the above-mentioned problem that prior art exists and provide a vertical multistage centrifugal pump, set up the decompression passageway on the pump seat, water outlet channel and bearing room on the decompression passageway intercommunication pump seat make the bearing room have ascending thrust, and this ascending thrust offsets partial decurrent pressure, reduces the pressure that the lower bearing bore, improves the life of lower bearing, and then improves the reliability of the whole operation of vertical multistage centrifugal pump.
The above technical purpose of the present invention is mainly solved by the following technical solutions: vertical multistage centrifugal pump, including the pump seat, with pump seat complex pump head, the pump body of connecting pump seat, pump head, set up divertor and impeller subassembly in this body, with impeller subassembly complex impeller shaft, with the motor shaft that the impeller shaft passes through the coupling joint, the motor of driving motor pivot, the impeller shaft lower extreme sets up down the bearing, the bearing sets up down in the pump seat, its characterized in that set up the bearing room on the pump seat, the bearing sets up down in the bearing room, just the bearing room below is left empty, set up the decompression passageway on the pump seat, the water outlet channel on the decompression passageway intercommunication pump seat with the below space of bearing room. The pressure reducing channel is arranged on the pump base and is communicated with the water outlet channel and the bearing chamber on the pump base, upward thrust is arranged in the bearing chamber, partial downward pressure is offset by the upward thrust, the pressure born by the lower bearing is reduced, the service life of the lower bearing is prolonged, and the reliability of the integral operation of the vertical multistage centrifugal pump is further improved.
As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure:
in order to facilitate production and machining and reduce the influence on the strength of the pump base, the pressure reducing channel is transversely arranged, and the axis of the pressure reducing channel is perpendicular to the axis of the impeller shaft.
In order to form a proper water flow and reduce the influence on the water flow of the water outlet channel, the axis of the pressure reducing channel is parallel to the water outlet channel and is arranged at intervals.
The utility model discloses beneficial effect who has: the pressure reducing channel is arranged on the pump base and is communicated with the water outlet channel and the bearing chamber on the pump base, upward thrust is arranged in the bearing chamber, partial downward pressure is offset by the upward thrust, the pressure born by the lower bearing is reduced, the service life of the lower bearing is prolonged, and the reliability of the integral operation of the vertical multistage centrifugal pump is further improved.
Drawings
Fig. 1 is a schematic structural diagram of the prior art to which the present invention relates.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): as shown in fig. 2 and 3, the vertical multistage centrifugal pump comprises a pump base 1, a pump head 2 matched with the pump base, a pump body connected with the pump base and the pump head, a fluid director and an impeller assembly 3 arranged in the pump body, an impeller shaft 4 matched with the impeller assembly, a motor rotating shaft 6 connected with the impeller shaft through a coupling 5, and a motor driving the motor rotating shaft, wherein a lower bearing 7 is arranged at the lower end of the impeller shaft, the lower bearing is arranged in the pump base, a bearing chamber 8 is arranged on the pump base, the lower bearing is arranged in the bearing chamber, a space is reserved below the bearing chamber, a pressure reducing channel 9 is arranged on the pump base, and the pressure reducing channel is communicated with a water outlet channel on the pump base and the space below the bearing chamber. The pressure reducing channel is arranged on the pump base and is communicated with the water outlet channel and the bearing chamber on the pump base, upward thrust is arranged in the bearing chamber, partial downward pressure is offset by the upward thrust, the pressure born by the lower bearing is reduced, the service life of the lower bearing is prolonged, and the reliability of the integral operation of the vertical multistage centrifugal pump is further improved.
In order to facilitate production and machining and reduce the influence on the strength of the pump base, the pressure reducing channel is transversely arranged, and the axis of the pressure reducing channel is perpendicular to the axis of the impeller shaft.
In order to form a proper water flow and reduce the influence on the water flow of the water outlet channel, the axis of the pressure reducing channel is parallel to the water outlet channel and is arranged at intervals.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. Vertical multistage centrifugal pump, including the pump seat, with pump seat complex pump head, the pump body of connecting pump seat, pump head, set up divertor and impeller subassembly in this body, with impeller subassembly complex impeller shaft, with the motor shaft that the impeller shaft passes through the coupling joint, the motor of driving motor pivot, the impeller shaft lower extreme sets up down the bearing, the bearing sets up down in the pump seat, its characterized in that set up the bearing room on the pump seat, the bearing sets up down in the bearing room, just the bearing room below is left empty, set up the decompression passageway on the pump seat, the water outlet channel on the decompression passageway intercommunication pump seat with the below space of bearing room.
2. The vertical multistage centrifugal pump according to claim 1, wherein said decompression passage is disposed laterally, and an axis of said decompression passage is perpendicular to an axis of said impeller shaft.
3. The vertical multistage centrifugal pump according to claim 1 or 2, wherein an axis of the decompression passage is parallel to the water outlet passage and is disposed at a spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723595.8U CN211449050U (en) | 2019-10-15 | 2019-10-15 | Vertical multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723595.8U CN211449050U (en) | 2019-10-15 | 2019-10-15 | Vertical multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211449050U true CN211449050U (en) | 2020-09-08 |
Family
ID=72304225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921723595.8U Active CN211449050U (en) | 2019-10-15 | 2019-10-15 | Vertical multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211449050U (en) |
-
2019
- 2019-10-15 CN CN201921723595.8U patent/CN211449050U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2869405Y (en) | Axial force balance device for pump | |
| CN101225833A (en) | Vertical barrel pocket type extraction pump | |
| CN211449050U (en) | Vertical multi-stage centrifugal pump | |
| CN203394792U (en) | Energy-saving multistage deep well submersible and centrifugal pump | |
| CN201159176Y (en) | Stainless steel multilevel deep well pump | |
| CN201627724U (en) | Vertical multi-stage centrifugal pump | |
| CN209959540U (en) | Axial thrust control device of multistage centrifugal blower | |
| CN208294784U (en) | Tangent type low specific speed immersible pump | |
| CN205895685U (en) | A impeller subassembly for deep -well pump | |
| CN104179655B (en) | A kind of combination type immersible pump | |
| CN201535257U (en) | Vertical tube bag type coagulated water pump | |
| CN210738835U (en) | Magnetic pump with long service life and low maintenance cost | |
| CN2844530Y (en) | Axial-forced balancer of sectional multi-stage pump | |
| CN200978839Y (en) | Vertical multistage pump | |
| CN202612199U (en) | Multi-grade centrifugal pump with completely-balanced axial force of impeller | |
| CN104196718B (en) | Screw immersible pump | |
| CN214499444U (en) | Booster pump of split type pump body | |
| CN211950874U (en) | Spiral axial-flow pump | |
| CN202811392U (en) | Double impeller horizontal type concentric centrifugal pump | |
| CN210799369U (en) | Single-stage double-suction self-regulating fluid dynamic and static pressure bearing centrifugal pump | |
| CN218564007U (en) | Oil-submerged pump with suction inlet joint | |
| CN2238332Y (en) | Single-stage single-suction minisize centrifugal pump | |
| CN204113758U (en) | A kind of pump shaft balanced controls of multistage acid resistant alkali centrifugal pump | |
| CN2753907Y (en) | Vertical series-parallel centrifugal pump | |
| CN207989322U (en) | A kind of self-balancing odd level centrifugal multistage pump multiple centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |