CN219974839U - Novel vertical double suction pump structure - Google Patents
Novel vertical double suction pump structure Download PDFInfo
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- CN219974839U CN219974839U CN202321083416.5U CN202321083416U CN219974839U CN 219974839 U CN219974839 U CN 219974839U CN 202321083416 U CN202321083416 U CN 202321083416U CN 219974839 U CN219974839 U CN 219974839U
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- pump
- pump body
- vertical double
- guide bearing
- double suction
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000013535 sea water Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a novel vertical double-suction pump structure, which belongs to the technical field of double-suction pumps, and comprises a variable frequency motor, a pump body and a lower pump cover connected with the pump body, wherein a flow cavity enclosed by the pump body and the pump cover is internally provided with a main shaft, an impeller and an impeller key, the pump body is arranged on a mounting plate, an inlet and an outlet of the pump are positioned in the horizontal direction, and an included angle of 90 degrees is designed from an original included angle of 180 degrees; the pump is coaxial with the motor, and the pump bears the radial force of the pump through the guide bearing; the upper end of the guide bearing is provided with a guide bearing shaft sleeve. The utility model is used for solving the problems of inconvenient installation and high noise of the vertical double suction pump on the ship in the prior art.
Description
Technical Field
The utility model belongs to the technical field of double suction pumps, and particularly relates to a novel vertical double suction pump structure.
Background
The vertical double suction pump has inlet and outlet in horizontal direction and the separating surfaces of the pump body and the pump cover are separated vertically on the axis center line.
Firstly, most of the vertical double suction pump structures (shown in figure 1) adopted in the prior art are designed for conveying clear water or seawater media, and pumps are generally installed on land (concrete) for use; secondly, the flow running range of the vertical double suction pump in the prior art is wider, the inlet and outlet caliber range of the pump is larger, the power range of a matched motor is also larger, the flow of the pump used on the ship is generally not large, most of the vertical double suction pumps used at present in China are used, the installation space of the pump used on the ship is limited, the space required by the installation of the vertical double suction pump structure used at present in the radial direction or the axial direction is too large, namely, the structure of the vertical double suction pump used at present is required to be designed again in an optimized mode from the aspect of economy or from the aspect of installation space. Finally, considering that the pump used on the ship has higher requirements on vibration and noise, and the transported impurities are more complex, the situation that electrochemical corrosion cannot occur is avoided even though the whole overflow part of the water pump is cast by stainless steel, and therefore, a novel vertical double-suction pump structure is provided for solving the problems.
Disclosure of Invention
Aiming at the problems, the utility model provides a novel vertical double-suction pump structure which is used for solving the problems that the vertical double-suction pump in the prior art is inconvenient to install on a ship and has high noise.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a novel vertical double-suction pump structure comprises a variable frequency motor, a pump body and a lower pump cover connected with the pump body, wherein a flow cavity enclosed by the pump body and the pump cover is internally provided with a main shaft, an impeller and an impeller key, the pump body is arranged on a mounting plate, an inlet and an outlet of the pump are positioned in the horizontal direction, and an included angle of 90 degrees is designed from an original included angle of 180 degrees; the pump is coaxial with the motor, and the pump bears the radial force of the pump through the guide bearing; the upper end of the guide bearing is provided with a guide bearing shaft sleeve.
Compared with the prior art, the utility model has the beneficial effects that: the device is suitable for being installed on a ship, and the installation of the pump set is very convenient and simple; the radial or axial installation space is small, the whole pump has compact structure and good stability; the optimized design of the integral structure greatly reduces the vibration and noise of the pump set, and accords with the use standard of the marine pump
As a further improvement of the above technical solution, the lower pump cover is disposed below the impeller.
The technical purpose of the improvement is as follows: the impeller, the guide bearing and other vulnerable parts are easy to replace.
As a further improvement of the technical scheme, the main shaft is of a stepped structure, and the side end of the main shaft is provided with a sealing ring.
The technical purpose of the improvement is as follows: the sealing ring is more convenient to replace.
As a further improvement of the technical scheme, a cathode protection device is arranged on the pump body.
The technical purpose of the improvement is as follows: the condition that the pump body is subjected to electrochemical corrosion when seawater is conveyed is effectively avoided, and the service life of the pump body is greatly prolonged.
As a further improvement of the technical scheme, a flushing water pipe is arranged on the pump body and provided with a dirt filter, the guide bearing and the mechanical seal are flushed by filtered seawater, and the lower end of the mechanical seal is provided with a mechanical seal shaft sleeve.
The technical purpose of the improvement is as follows: the situation that the mechanical seal and the guide bearing are damaged due to abrasion of solid particles in the flushing process is effectively avoided, and the service lives of the mechanical seal and the guide bearing are prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a vertical double suction pump in the prior art.
Fig. 2 is a cross-sectional view of the vertical double suction pump of the present utility model.
FIG. 3 is a three-dimensional schematic diagram of a vertical double suction pump according to the present utility model
FIG. 4 is a cross-sectional view of a vertical double suction pump according to another aspect of the present utility model
Fig. 5 is a top view of fig. 3.
Fig. 6 is a schematic view of the structure of the lower pump cover in the structure of the present utility model.
In the figure: 1. a variable frequency motor; 2. a pump body; 3. a lower pump cover; 4. a main shaft; 5. an impeller; 6. a seal ring; 7. mechanical sealing; 8. a mechanical seal shaft sleeve; 9. an impeller key; 10. a guide bearing sleeve; 11. a guide bearing; 12. a flushing water pipe; 13. a cathode protection device; 14. and (3) mounting a plate.
Detailed Description
The following detailed description of the utility model, in conjunction with the examples, is intended to be merely exemplary and explanatory and should not be construed as limiting the scope of the utility model in any way, in order to provide a better understanding of the utility model as claimed.
Referring to fig. 2 to 5, in a specific embodiment, a novel vertical double suction pump structure comprises a variable frequency motor 1, a pump body 2 and a lower pump cover 3 connected with the pump body 2, wherein a flow cavity enclosed by the pump body 2 and the pump cover is internally provided with a main shaft 4, an impeller 5 and an impeller key 9, the pump body 2 is arranged on a mounting plate 14, an inlet and an outlet of the pump body 2 are positioned in the horizontal direction, and an included angle of 90 degrees is designed from an original included angle of 180 degrees; the pump body 2 is coaxial with the motor, and the pump bears the radial force of the pump body through the guide bearing 11; a guide bearing sleeve 10 is provided at the upper end of the guide bearing 11.
Specifically, firstly we cast the pump body 2 and the mounting plate 14 of the pump into a whole, then set up spigot and bolt hole that cooperated with variable frequency motor 1 on the pump body 2, therefore the motor will be fixed on the pump body 2 through the bolt direct mount, then we set up the bolt hole that can cooperated with mounting plane on the mounting pad of the pump body 2 again, can fix the whole pump group together with mounting surface through the bolt directly, and this also satisfies the condition of shipboard or marine installation, in addition, because we set up the mounting surface in the intermediate position of the pump body 2 and variable frequency motor 1, can make both force from on the pump and force on the motor can be fast transmitted to the mounting plane, not only improved the stability of the whole unit, but also make the installation process of the whole unit become more convenient and succinct.
Secondly, the flow channel of the pump is designed in an optimized way on the aspect of waterpower, and in order to make the whole speed field more uniform, the pump still adopts a semi-spiral water suction chamber and a spiral water pressing chamber; the inlet and outlet of the optimized pump are still positioned in the horizontal direction, but the original included angle of 180 degrees is designed to be an included angle of 90 degrees, the whole water suction chamber and the water pressing chamber of the pump are matched more compactly, the running stability of the pump is greatly improved, and the installation space of the whole pump in the radial direction is also greatly reduced, so that the installation area of the whole pump is reduced; meanwhile, the water distribution ribs are designed at the flow channel outlet of the pumping chamber, so that the pressure pulsation at the outlet of the pump is greatly reduced, the running stability of the pump is improved, and the vibration and noise of the pump are reduced. Then considering that the caliber of the pump is smaller, the external dimension of the matched motor is also smaller, the direct-connection type structural design is adopted, the pump body 2 and the variable frequency motor 1 are coaxially installed, the pump bears the radial force of the pump through the guide bearing 11, the rolling bearing on the variable frequency motor 1 bears the axial force of the pump, the whole shafting layout is compact, the axial length of the whole pump is reduced due to the direct-connection type structural design, the cost is reduced, and the installation space of the whole pump in the axial direction is greatly reduced. In addition, in order to further reduce vibration and noise of the pump set and enable operation of the pump to be more stable, reinforcing ribs are arranged at the connecting place of the water suction chamber and the water pumping chamber of the pump body 2, and a plurality of reinforcing ribs are arranged at the connecting place of the mounting base plate and the pump body 2.
As shown in fig. 1, as a preferable mode of the above embodiment, the lower pump cover 3 is provided below the impeller 5. The main shaft 4 is arranged in a stepped structure, and a sealing ring 6 is arranged at the side end of the main shaft 4.
In particular, if the pump adopts the original rotor structure, the impeller 5, the sealing ring 6, the guide bearing 11 and other wearing parts are inconvenient to replace. Therefore, the lower pump cover 3 is designed below the impeller 5, an O-shaped ring mounting groove and a bolt hole matched with the pump body 2 are formed in the pump cover, medium leakage can be prevented through the O-shaped ring, and the pump cover and the pump body 2 can be mounted and fixed through the bolt; the spigot and the bolt hole matched with the sealing ring 6 are arranged on the pump body 2 and the pump cover, and the sealing ring 6 and the pump body 2 or the pump cover can be fixed by the inner hexagon bolt; starting from the assembly sequence of the rotor, the main shaft 4 is designed to be in a step shape, the motor is inverted, so that the mechanical sealing shaft sleeve 8 is assembled at the uppermost stage, the mechanical sealing shaft sleeve 8 is provided with a bolt hole, and the shaft sleeve is installed and fixed through a positioning shaft shoulder and a set screw on the shaft; then, assembling a mechanical seal 7, and taking the convenience of installation and disassembly into consideration, adopting a container type mechanical seal; then the pump body 2 and the sealing ring 6 on the pump body 2 are assembled; then, an impeller key 9 and an impeller 5 are assembled, and the impeller 5 is axially fixed through a shaft shoulder on the shaft and a round nut on the side of a guide bearing 11; and then the pump cover with the sealing ring 6 is arranged on the pump body 2, finally the guide bearing shaft sleeve 10 and the guide bearing 11 are assembled, and then the whole unit is inverted again. Because the parts of the water pump are fewer, the installation process of the whole rotor is very convenient and concise, and when vulnerable parts such as the impeller 5, the sealing ring 6, the guide bearing 11 and the like are replaced, only the pump cover is detached, the motor and the pump body 2 are not required to be detached, the installation pipeline is also not required to be detached, and the whole replacement process is very convenient and concise.
As shown in fig. 1, as a preferable mode of the above embodiment, a cathode protection device 13 is provided on the pump body 2.
Specifically, three anodes, two reference electrodes, a cathode and a zero electrode are arranged on the pump body 2, so that the service life of the pump body 2 is prolonged.
As shown in fig. 1, as a preferable mode of the above embodiment, a flushing water pipe 12 is provided on the pump body 2, a dirt filter is provided, a guide bearing 11 and a mechanical seal 7 are flushed by filtered seawater, and a mechanical seal shaft sleeve 8 is provided at a lower end of the mechanical seal.
Specifically, in consideration of the fact that the content of solid particles in seawater or river water is high, the original self-flushing scheme is adopted, and the mechanical seal 7 and the guide bearing 11 are easy to damage due to particle abrasion, so that a dirt filter is arranged on a flushing pipeline to prolong the service life of the mechanical seal and the guide bearing 11.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely a preferred embodiment of the utility model, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and that, for a person skilled in the art, modifications, adaptations or variations may be made without departing from the principles of the present utility model, and the above technical features may be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (5)
1. The utility model provides a novel vertical double suction pump structure, it includes inverter motor (1), pump body (2) and lower pump cover (3) that are connected with pump body (2), is equipped with main shaft (4) and impeller (5), impeller key (9) in the flow chamber that pump body (2) and pump cover enclose, its characterized in that, pump body (2) set up on mounting panel (14), the exit of pump body (2) is located the horizontal direction, designs into 90 contained angles by original 180 contained angles; the pump is coaxial with the motor, and the pump bears the radial force of the pump through a guide bearing (11); and a guide bearing shaft sleeve (10) is arranged at the upper end of the guide bearing (11).
2. A novel vertical double suction pump structure according to claim 1, characterized in that the lower pump cover (3) is arranged below the impeller (5).
3. The novel vertical double suction pump structure according to claim 1, wherein the main shaft (4) is arranged in a stepped structure, and a sealing ring (6) is arranged at the side end of the main shaft (4).
4. The novel vertical double suction pump structure according to claim 1, wherein a cathode protection device (13) is arranged on the pump body (2).
5. The novel vertical double suction pump structure according to claim 1, wherein a flushing water pipe (12) is arranged on the pump body (2) and is provided with a dirt filter, the guide bearing (11) and the mechanical seal (7) are flushed by filtered seawater, and the lower end of the mechanical seal is provided with a mechanical seal shaft sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321083416.5U CN219974839U (en) | 2023-05-08 | 2023-05-08 | Novel vertical double suction pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321083416.5U CN219974839U (en) | 2023-05-08 | 2023-05-08 | Novel vertical double suction pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974839U true CN219974839U (en) | 2023-11-07 |
Family
ID=88588430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321083416.5U Active CN219974839U (en) | 2023-05-08 | 2023-05-08 | Novel vertical double suction pump structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974839U (en) |
-
2023
- 2023-05-08 CN CN202321083416.5U patent/CN219974839U/en active Active
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