CN215171019U - Novel power sealing unit cantilever type centrifugal pump - Google Patents
Novel power sealing unit cantilever type centrifugal pump Download PDFInfo
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- CN215171019U CN215171019U CN202121007305.7U CN202121007305U CN215171019U CN 215171019 U CN215171019 U CN 215171019U CN 202121007305 U CN202121007305 U CN 202121007305U CN 215171019 U CN215171019 U CN 215171019U
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Abstract
The utility model discloses a novel power seal unit cantilever type centrifugal pump, including the pump body, set up at the link of pump body opposite side, set up the bearing unit who keeps away from pump body one side at the link and set up the axis of rotation inboard at the bearing unit, the inboard of link is equipped with the power seal unit for sealed the auxiliary impeller who sets up at the power seal unit inner chamber, the impeller nestification is at the side surface of axis of rotation, is driven by the axis of rotation, and the impeller rotates. The utility model discloses the machining precision requirement of main impeller, auxiliary impeller is not high, and convenient the manufacturing has reduced manufacturing cost, and the centrifugal pump is when operation or stop, and the power seal unit can both prevent the medium leakage, and the security is high, and the seal flange dish can be adjusted on the axial direction through the nut, need not to stop the pump maintenance.
Description
Technical Field
The utility model discloses centrifugal pump technical field specifically is a novel power seal unit cantilever type centrifugal pump.
Background
Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, a pump shell and a water suction pipe are filled with water, then a motor is started, a pump shaft drives an impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller in a centrifugal motion, and flows into a water pressing pipeline of the water pump through a flow channel of a volute-shaped pump shell;
the existing cantilever type centrifugal pump is easy to leak, the mechanical seal is developed rapidly nowadays, the sealing performance is excellent, almost no leakage exists, but the installation and maintenance requirements are higher, the precision is high, and the price is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the problem among the background art, provide a novel power seal unit cantilever type centrifugal pump.
The utility model adopts the technical scheme as follows:
the utility model provides a novel power seal unit cantilever type centrifugal pump, includes the pump body, sets up at the link of pump body opposite side, sets up the bearing unit who keeps away from pump body one side at the link and sets up the axis of rotation inboard at the bearing unit, the inboard of link is equipped with power seal unit for sealed the auxiliary impeller who sets up at the power seal unit inner chamber, the impeller nestification is in the side surface of axis of rotation, drives the impeller rotation by the axis of rotation.
Furthermore, the bottom surface of the bearing unit is connected with support legs through bolts, so that the stability and the rigidity of the bearing unit are improved.
Further, the impeller comprises a main impeller and an auxiliary impeller, a sealing cover and a sealing box body are arranged between the main impeller and the auxiliary impeller, a wear-resisting plate is arranged on one side, away from the sealing cover, of the main impeller, and an O-shaped ring I and an O-shaped ring II are arranged between the wear-resisting plate and the main impeller.
Furthermore, a cavity is formed between the sealing cover and the sealing box body, and the auxiliary impeller divides the cavity into a front part and a rear part.
Furthermore, the surface of the pump body is in threaded connection with an adjusting bolt, and the adjusting bolt penetrates through the pump body to be in threaded connection with the wear-resisting plate.
Furthermore, a sealing rubber ring is arranged on one side, away from the sealing box body, of the auxiliary impeller, a sealing flange is arranged on one side, away from the auxiliary impeller, of the sealing rubber ring, and a matched stud and a matched nut are arranged between the sealing box body and the sealing flange.
Furthermore, the pump body is fixed with the connecting frame through a connecting bolt, and the connecting frame is fixed with the bearing unit through a sealing bolt.
Furthermore, one side of the auxiliary impeller, which is close to the main impeller, is a smooth surface, and the other side of the auxiliary impeller is provided with blades with conical sections.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, the auxiliary impeller among the cantilever type centrifugal pump is irrelevant with the sealing performance of power seal unit, therefore the machining precision requirement of auxiliary impeller is not high, and manufacturing is convenient, has reduced manufacturing cost.
2. The utility model discloses in, form the cavity between sealed lid and the seal box body, the bilobed wheel falls into the cavity front and back two parts, and when the axis of rotation rotated, through the centrifugal force effect of bilobed wheel, the pressure of intracavity reaches balanced around in making the cavity, and no leakage, when stopping the pump, through the contact of sealed rubber ring and sealing flange dish, prevents the medium leakage, consequently, the centrifugal pump is when operation or stop, and the power seal unit can both prevent the medium leakage, and the security is high.
3. The utility model discloses in, sealed flange plate can adjust in the axial direction through the nut, need not to stop the pump maintenance.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural view of a secondary impeller of the present invention;
fig. 4 is a partial cross-sectional view of the interior of the connecting frame of the present invention.
The labels in the figure are: 1. a pump body; 4. a connecting frame; 5. a power seal unit; 6. a rotating shaft; 7. A bearing unit; 8. a support leg; 9. a connecting bolt; 10. a seal bolt; 11. a wear plate; 12. Adjusting the bolt; 13. a first O-shaped ring; 14. an O-shaped ring II; 15. a main impeller; 16. a secondary impeller; 17. a sealing cover; 18. sealing the box body; 19. sealing the rubber ring; 20. sealing the flange plate; 21. A mating stud; 22. and (5) matching with a nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1-4, a novel power sealing unit cantilever centrifugal pump comprises a pump body 1, a connecting frame 4 arranged at the other side of the pump body 1, a bearing unit 7 arranged at one side of the connecting frame 4 far away from the pump body 1, and a rotating shaft 6 arranged at the inner side of the bearing unit 7, wherein the inner side of the connecting frame 4 is provided with a power sealing unit 5, the auxiliary impeller is used for sealing and arranged in an inner cavity of the power sealing unit 5, the impeller is nested on the side surface of the rotating shaft 6 and is driven by the rotating shaft 6, the impeller rotates, the bottom surface of the bearing unit 7 is connected with support legs 8 through bolts, the stability and rigidity of the bearing unit are improved, the pump body 1 and the connecting frame 4 are fixed through connecting bolts 9, the connecting frame 4 and the bearing unit 7 are fixed through sealing bolts 10, one side, close to the main impeller 15, of the auxiliary impeller 16 is a smooth surface, and the other side of the auxiliary impeller is provided with blades with conical sections.
By adopting the technical scheme:
the auxiliary impeller 16 in the cantilever type centrifugal pump is irrelevant to the sealing performance of the power sealing unit 5, so the requirement on the processing precision of the auxiliary impeller 16 is not high, the manufacture is convenient, and the production cost is reduced.
The impeller comprises a main impeller 15 and a secondary impeller 16, a sealing cover 17 and a sealing box 18 are arranged between the main impeller 15 and the secondary impeller 16, a wear-resisting plate 11 is arranged on one side, away from the sealing cover 17, of the main impeller 15, and an O-shaped ring I13 and an O-shaped ring II 14 are arranged between the wear-resisting plate 11 and the main impeller 15.
A cavity is formed between the sealing cover 17 and the sealing box 18, the auxiliary impeller 16 divides the cavity into a front part and a rear part, when the rotating shaft 6 rotates, the centrifugal force action of the auxiliary impeller 16 enables the pressure in the front cavity and the rear cavity in the cavity to be balanced without leakage, and when the pump is stopped, the sealing rubber ring 19 is contacted with the sealing flange 20 to prevent medium leakage, so that when the centrifugal pump is operated or stopped, the power sealing unit 5 can prevent the medium leakage, and the safety is high.
The surface of the pump body 1 is in threaded connection with an adjusting bolt 12, and the adjusting bolt 12 penetrates through the pump body 1 to be in threaded connection with the wear-resisting plate 11.
A sealing rubber ring 19 is arranged on one side of the auxiliary impeller 16 far away from the sealing box body 18, a sealing flange 20 is arranged on one side of the sealing rubber ring 19 far away from the auxiliary impeller 16, and a matching stud 21 and a matching nut 22 are arranged between the sealing box body 18 and the sealing flange 20.
By adopting the technical scheme:
the sealing flange 20 can be adjusted in the axial direction by means of bolts without maintenance being stopped.
The working principle of the centrifugal pump is that referring to fig. 1-4, when in use, the rotating shaft 6 rotates to drive the main impeller 15 and the auxiliary impeller 16 to rotate, the centrifugal force of the auxiliary impeller 16 acts to balance the pressure in the front cavity and the back cavity in the cavity, no leakage exists, when the pump is stopped, the sealing rubber ring 19 contacts with the sealing flange 20 to prevent medium leakage, therefore, when the centrifugal pump is in operation or stopped, the dynamic sealing unit 5 can prevent medium leakage, when the sealing rubber ring 19 is worn, the sealing flange 20 can be adjusted in the axial direction through bolts, then the sealing rubber ring 19 is replaced, and maintenance is not needed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a novel power seal unit cantilever type centrifugal pump, includes the pump body (1), sets up link (4) at the pump body (1) opposite side, sets up bearing unit (7) and setting at bearing unit (7) inboard axis of rotation (6) of keeping away from pump body (1) one side in link (4), its characterized in that: the inner side of the connecting frame (4) is provided with a power sealing unit (5) for sealing an impeller arranged in the inner cavity of the power sealing unit (5), the impeller is embedded in the side surface of the rotating shaft (6), and the rotating shaft (6) drives the impeller to rotate;
the impeller comprises a main impeller (15) and an auxiliary impeller (16), a sealing cover (17) and a sealing box body (18) are arranged between the main impeller (15) and the auxiliary impeller (16), a wear-resisting plate (11) is arranged on one side, away from the sealing cover (17), of the main impeller (15), and an O-shaped ring I (13) and an O-shaped ring II (14) are arranged between the wear-resisting plate (11) and the main impeller (15).
2. The novel dynamic seal unit cantilever centrifugal pump of claim 1, wherein: the bottom surface of the bearing unit (7) is connected with a support leg (8) through a bolt, so that the stability and the rigidity of the bearing unit are improved.
3. The novel dynamic seal unit cantilever centrifugal pump of claim 1, wherein: a cavity is formed between the sealing cover (17) and the sealing box body (18), and the auxiliary impeller (16) divides the cavity into a front part and a rear part.
4. The novel dynamic seal unit cantilever centrifugal pump of claim 1, wherein: the surface of the pump body (1) is in threaded connection with an adjusting bolt (12), and the adjusting bolt (12) penetrates through the pump body (1) to be in threaded connection with the wear-resisting plate (11).
5. The novel dynamic seal unit cantilever centrifugal pump of claim 1, wherein: one side of the auxiliary impeller (16) far away from the sealing box body (18) is provided with a sealing rubber ring (19), one side of the sealing rubber ring (19) far away from the auxiliary impeller (16) is provided with a sealing flange (20), a matched stud (21) and a matched nut (22) are arranged between the sealing box body (18) and the sealing flange (20), and the sealing rubber ring (19) is fixed on the rotating shaft (6).
6. The novel dynamic seal unit cantilever centrifugal pump of claim 1, wherein: the pump body (1) and the connecting frame (4) are fixed through connecting bolts (9), and the connecting frame (4) and the bearing unit (7) are fixed through sealing bolts (10).
7. A novel dynamic seal unit cantilever centrifugal pump as claimed in claim 3, wherein: one side of the auxiliary impeller (16) close to the main impeller (15) is a smooth surface, and the other side is provided with blades with conical sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121007305.7U CN215171019U (en) | 2021-05-12 | 2021-05-12 | Novel power sealing unit cantilever type centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121007305.7U CN215171019U (en) | 2021-05-12 | 2021-05-12 | Novel power sealing unit cantilever type centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215171019U true CN215171019U (en) | 2021-12-14 |
Family
ID=79368664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121007305.7U Active CN215171019U (en) | 2021-05-12 | 2021-05-12 | Novel power sealing unit cantilever type centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215171019U (en) |
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2021
- 2021-05-12 CN CN202121007305.7U patent/CN215171019U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220630 Address after: No. 36, Xinyi street, Youjia Village Industrial Zone, Ganjingzi District, Dalian, Liaoning 116000 Patentee after: Dalian Yichen fluid equipment Co.,Ltd. Address before: 116600 No.100 youjiacun Industrial Park, Ganjingzi District, Dalian City, Liaoning Province Patentee before: Akos (Dalian) pump Co.,Ltd. |