CN220319844U - Vertical double-stage pump set - Google Patents
Vertical double-stage pump set Download PDFInfo
- Publication number
- CN220319844U CN220319844U CN202321815566.0U CN202321815566U CN220319844U CN 220319844 U CN220319844 U CN 220319844U CN 202321815566 U CN202321815566 U CN 202321815566U CN 220319844 U CN220319844 U CN 220319844U
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- China
- Prior art keywords
- pump
- pump set
- impeller
- shaft
- pump body
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- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a vertical double-stage pump set, which belongs to the technical field of marine fire protection systems and cooling systems and comprises a bracket, wherein a motor is arranged at the top of the bracket, a pump body is arranged at the bottom of the bracket, and a pump shaft is arranged at the output end of the motor. The pump set of the utility model adopts the motor with high rotating speed, can effectively reduce the volume of the pump set, reduce the weight of the pump set, and the gravity center is the joint of the motor and the pump set, the waist installation structure is adopted to facilitate the reliability of the operation of the pump set, in addition, the impeller of the pump set adopts back-to-back, the axial force generated during the operation of the impeller is facilitated to be eliminated, the reliability of the operation of the pump set is improved, the two ends of the pump set adopt the bearing seat structure, the positioning precision of the rotor part is ensured, the operation reliability of the pump set is enhanced, the pump set both adopts the integrated mechanical seal structure, the mechanical seal and the shaft sleeve are designed into a whole, the rotor part is reduced, the installation of the pump set is facilitated, and the high performance of the pump set is improved.
Description
Technical Field
The utility model relates to a pump set, in particular to a vertical double-stage pump set, and belongs to the technical field of marine fire protection systems and cooling systems.
Background
Along with the Xin development of the domestic shipbuilding industry, the tonnage of various ships is larger and larger, the flow of a fire pump and a cooling water pump matched with the ship is also increased, along with the national advocacy of energy conservation and emission reduction, the centrifugal pump set is necessary to realize high efficiency and high reliability aiming at the characteristics of long-term operation of a fire system and a cooling system, and the existing pump set has large volume and low rotating speed and cannot reasonably utilize the space on the ship.
A vertical double stage pump stack is designed for this purpose to optimise the above-mentioned problem.
Disclosure of Invention
The utility model mainly aims to provide a vertical double-stage pump set, wherein the pump set adopts a high-rotation-speed motor, the volume of the pump set can be effectively reduced, the weight of the pump set is reduced, the gravity center is the joint of the motor and the pump set, the waist mounting structure is adopted to facilitate the operation reliability of the pump set, in addition, the impeller of the pump set adopts back-to-back, the axial force generated during the operation of the impeller is eliminated, the operation reliability of the pump set is improved, the two ends of the pump set adopt bearing seat structures, the positioning precision of a rotor part is ensured, the operation reliability of the pump set is enhanced, the upper part and the lower part of the pump set adopt integrated mechanical seal structure, the mechanical seal and a shaft sleeve are designed into a whole, the rotor part is reduced, the installation of the pump set is facilitated, and the pump set can be increased.
The aim of the utility model can be achieved by adopting the following technical scheme:
the utility model provides a vertical doublestage pump package, includes the bracket, the motor is installed at the top of bracket, the pump body is installed to the bottom of bracket, the pump shaft is installed to the output of motor, be provided with the shaft coupling between the output of motor and the pump shaft, the top of pump body is provided with the machine seal, the bottom of pump body is provided with the machine seal down, one side of the inside of pump body is provided with the suction segment, install the return bend between the top in the pump body outside and the bottom, the top in the pump body outside is provided with the discharge port, first-stage impeller is installed to the bottom of pump shaft, secondary impeller is installed at the top of pump shaft, first-stage impeller and secondary impeller are symmetrical each other, middle axle sleeve is installed to the intermediate position department of the inside of pump body, middle axle sleeve is located between first-stage impeller and the secondary impeller.
Preferably: the primary impeller and the secondary impeller are the same in size and structure, and sealing rings are arranged between the outer side of one end of the primary impeller, which is far away from the middle shaft sleeve, and the pump body.
Preferably: the middle shaft sleeve is fixedly connected with the pump body through bolts, and heat dissipation grooves are uniformly formed in the inner side of the middle shaft sleeve.
Preferably: the outside of the pump body is evenly coated with an anti-corrosion coating, and the anti-corrosion coating is a PFA coating.
Preferably: the top of pump shaft is provided with the bolster bearing housing, bolster bearing housing's internally mounted has the bearing, bolster bearing housing's top is provided with the upper bearing cap, the bearing housing is installed to the bottom of pump shaft, the internally mounted of bearing housing has the bearing, the lower bearing cap is installed to the bottom of bearing housing.
Preferably: the upper mechanical seal and the lower mechanical seal are mechanical seals, and the upper mechanical seal, the lower mechanical seal and the shaft sleeve at the end part of the pump shaft are of an integrated structure.
The beneficial effects of the utility model are as follows:
according to the vertical double-stage pump unit, the motor with high rotating speed is adopted, so that the volume of the pump unit can be effectively reduced, the weight of the pump unit is reduced, the gravity center is the joint of the motor and the pump unit, the reliability of the operation of the pump unit is facilitated by adopting a waist mounting structure, in addition, the impeller of the pump unit is back to back, the axial force generated by the impeller during operation is eliminated, and the reliability of the operation of the pump unit is improved;
the bearing pedestal structure is adopted at the pump unit both ends, adopts the bearing to fix a position, has guaranteed rotor parts's positioning accuracy, reinforcing pump unit operational reliability, and the pump unit all adopts collection dress formula mechanical seal structural style from top to bottom, and this machine seal designs as an organic wholely with the axle sleeve, reduces rotor spare part, makes things convenient for the installation of pump unit, increases the high ability of pump unit.
Drawings
FIG. 1 is a front cross-sectional view of the present utility model;
FIG. 2 is an enlarged view of the structure of FIG. 1A according to the present utility model;
fig. 3 is a side view of the present utility model.
In the figure: 1. a bracket; 2. a motor; 3. a pump shaft; 4. a coupling; 5. a pump body; 6. an upper bearing seat; 7. a lower bearing seat; 8. sealing by a machine; 9. sealing by a machine; 10. a suction section; 11. a first stage impeller; 12. a secondary impeller; 13. an intermediate sleeve; 14. a seal ring; 15. and (3) bending the pipe.
Detailed Description
In order to make the technical solution of the present utility model more clear and clear to those skilled in the art, the present utility model will be described in further detail with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.
As shown in fig. 1-3, this embodiment provides a vertical double-stage pump set, including bracket 1, motor 2 is installed at the top of bracket 1, pump body 5 is installed to the bottom of bracket 1, pump shaft 3 is installed to the output of motor 2, be provided with shaft coupling 4 between the output of motor 2 and pump shaft 3, the top of pump body 5 is provided with machine seal 8, the bottom of pump body 5 is provided with machine seal 9 down, one side of pump body 5 inside is provided with suction section 10, install return bend 15 between the top and the bottom in the pump body 5 outside, the top in the pump body 5 outside is provided with the discharge port, first-stage impeller 11 is installed to the bottom of pump shaft 3, secondary impeller 12 is installed at the top of pump shaft 3, first-stage impeller 11 and secondary impeller 12 are mutually symmetrical, intermediate shaft sleeve 13 is installed to the intermediate position department in the pump body 5 inside, intermediate shaft sleeve 13 is located between first-stage impeller 11 and secondary impeller 12.
The pump set is mainly used for a fire pump set and a cooling pump set, when the pump set works, a medium enters through an inlet of a suction section 10 on the pump body 5, passes through a first-stage impeller 11, enters a secondary impeller 12 through a bent pipe 15 after the first-stage impeller 11 works and pressurizes, and is discharged from a discharge port after the secondary impeller 12 works and pressurizes again.
In this embodiment, the primary impeller 11 and the secondary impeller 12 are the same in size and structure, and a seal ring 14 is provided between the pump body 5 and the outside of the end of the primary impeller 11 remote from the intermediate shaft sleeve 13.
The primary impeller 11 and the secondary impeller 12 having the same structure have improved the effect of increasing in use, and the seal ring 14 is used to ensure the sealing property of the inside of the pump body 5.
In this embodiment, the middle shaft sleeve 13 is fixedly connected with the pump body 5 through bolts, and heat dissipation grooves are uniformly formed in the inner side of the middle shaft sleeve 13.
By using the intermediate shaft sleeve 13, the heat dissipation effect during rotation is ensured while sealing is ensured.
In this embodiment, the outer side of the pump body 5 is uniformly coated with an anti-corrosion coating, and the anti-corrosion coating is a PFA coating.
By the arrangement of the PFA coating, the outer side of the pump body 5 has the characteristics of excellent corrosion resistance, anti-sticking, anti-fouling, anti-adhesion, high temperature resistance, abrasion resistance and the like.
In this embodiment, the top of the pump shaft 3 is provided with an upper bearing seat 6, the inside of the upper bearing seat 6 is provided with a bearing, the top of the upper bearing seat 6 is provided with an upper bearing cover, the bottom end of the pump shaft 3 is provided with a lower bearing seat 7, the inside of the lower bearing seat 7 is provided with a bearing, and the bottom of the lower bearing seat 7 is provided with a lower bearing cover.
Bearing seat structures are adopted at two ends of the pump shaft 3, and bearings are adopted for positioning, so that the positioning precision of rotor components is ensured, and the operation reliability of the pump set is enhanced.
In this embodiment, the upper seal 8 and the lower seal 9 are both mechanical seals, and the upper seal 8, the lower seal 9 and the shaft sleeve at the end of the pump shaft 3 are in an integral structure.
The mechanical seal is integrated with the shaft sleeve into a whole by adopting the integrated mechanical seal structure, so that rotor parts are reduced, the installation of the pump set is facilitated, and the altitude of the pump set is improved.
The above description is merely a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present utility model within the scope of the present utility model disclosed in the present utility model.
Claims (6)
1. A vertical two-stage pump set, characterized in that: including bracket (1), motor (2) are installed at the top of bracket (1), pump body (5) are installed to the bottom of bracket (1), pump shaft (3) are installed to the output of motor (2), be provided with shaft coupling (4) between the output of motor (2) and pump shaft (3), the top of pump body (5) is provided with machine seal (8), the bottom of pump body (5) is provided with down machine seal (9), one side of pump body (5) inside is provided with suction segment (10), install return bend (15) between the top and the bottom in the pump body (5) outside, the top in the pump body (5) outside is provided with the discharge port, first-stage impeller (11) are installed to the bottom of pump shaft (3), secondary impeller (12) are installed at the top of pump shaft (3), first-stage impeller (11) and secondary impeller (12) are symmetrical each other, middle axle sleeve (13) are installed to the intermediate position department in pump body (5) inside, intermediate shaft sleeve (13) is located between first-stage impeller (11) and secondary impeller (12).
2. The vertical two-stage pump set according to claim 1, wherein: the primary impeller (11) and the secondary impeller (12) are the same in size and structure, and sealing rings (14) are arranged between the outer side of one end, far away from the middle shaft sleeve (13), of the primary impeller (11) and the pump body (5).
3. The vertical two-stage pump set according to claim 2, wherein: the middle shaft sleeve (13) is fixedly connected with the pump body (5) through bolts, and heat dissipation grooves are uniformly formed in the inner side of the middle shaft sleeve (13).
4. A vertical double stage pump set according to claim 3, wherein: the outside of the pump body (5) is uniformly coated with an anti-corrosion coating, and the anti-corrosion coating is a PFA coating.
5. The vertical dual stage pump set as defined in claim 4, wherein: the top of pump shaft (3) is provided with bolster bearing housing (6), the internally mounted of bolster bearing housing (6) has the bearing, the top of bolster bearing housing (6) is provided with the upper bearing cap, bolster bearing housing (7) are installed to the bottom of pump shaft (3), the internally mounted of bolster bearing housing (7) has the bearing, the lower bearing cap is installed to the bottom of bolster bearing housing (7).
6. The vertical dual stage pump set as defined in claim 5, wherein: the upper mechanical seal (8) and the lower mechanical seal (9) are both mechanical seals, and the upper mechanical seal (8), the lower mechanical seal (9) and the shaft sleeve at the end part of the pump shaft (3) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815566.0U CN220319844U (en) | 2023-07-11 | 2023-07-11 | Vertical double-stage pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815566.0U CN220319844U (en) | 2023-07-11 | 2023-07-11 | Vertical double-stage pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220319844U true CN220319844U (en) | 2024-01-09 |
Family
ID=89413445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321815566.0U Active CN220319844U (en) | 2023-07-11 | 2023-07-11 | Vertical double-stage pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220319844U (en) |
-
2023
- 2023-07-11 CN CN202321815566.0U patent/CN220319844U/en active Active
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