CN113027805A - Booster-type sealing energy-saving device for pump - Google Patents
Booster-type sealing energy-saving device for pump Download PDFInfo
- Publication number
- CN113027805A CN113027805A CN202110340519.4A CN202110340519A CN113027805A CN 113027805 A CN113027805 A CN 113027805A CN 202110340519 A CN202110340519 A CN 202110340519A CN 113027805 A CN113027805 A CN 113027805A
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- impeller
- pump
- sealing
- booster
- main shaft
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- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 17
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a booster-type sealing energy-saving device for a pump, which comprises two structural forms: the booster-type sealing energy-saving device for the horizontal pump and the booster-type sealing energy-saving device for the vertical pump respectively comprise a pump body, an impeller, a main shaft, a booster sealing orifice plate, a transmission key and a fastener; the impeller is fixed on the main shaft and rotates at a high speed along with the main shaft, the pressurizing sealing orifice plate is fixed at the inlet of the pump body through a fastener, and a sealing cavity structure is formed by a gap between the pressurizing sealing orifice plate and the impeller; the impeller is fixedly connected with the main shaft through a transmission key. The booster-type sealing energy-saving device for the pump improves the flowing state of a conveying medium at the inlet of the impeller, overcomes the defects that the traditional pump has large backflow and the conveying medium at the suction inlet of the impeller and backflow flow impact each other, improves the efficiency of conveying fluid by the pump, and solves the problems that a sealing ring of the traditional pump is easy to wear and difficult to disassemble.
Description
Technical Field
The invention relates to an energy-saving device, in particular to a booster-type sealing energy-saving device for a pump, which improves the flow field distribution state of a delivery medium at a suction inlet of an impeller of the pump, overcomes the defects of large return flow of the traditional pump and mutual impact of an incoming flow medium and return flow at the suction inlet of the impeller, improves the efficiency of delivering the medium by the pump, and achieves the purpose of high efficiency and energy saving of the pump.
Background
At present, generally, in water pumps at home and abroad, a method of additionally arranging a sealing ring at an impeller opening ring and the like is adopted to reduce the backflow amount in the pump and play a role of sealing. This method has the following disadvantages: the processing precision of parts is high, otherwise, the ideal sealing effect is difficult to achieve; the impeller sealing ring is easy to wear, the pump efficiency can be reduced after the impeller sealing ring is worn, the impeller sealing ring needs to be replaced by a pump in site, and a great deal of inconvenience is brought.
Disclosure of Invention
In view of the above problems, the present invention provides a pressurized sealing energy-saving device for a pump, which improves the distribution state of a flow field of a medium conveyed at a suction inlet of an impeller of the pump, overcomes the disadvantages of large return flow rate of the conventional pump and mutual impact between an incoming medium and return flow at the suction inlet of the impeller, improves the efficiency of the pump for conveying the medium, and achieves the purpose of high efficiency and energy saving of the pump.
The invention solves the technical problems through the following technical scheme: the utility model provides an economizer is sealed to booster-type for pump, economizer is sealed to booster-type for pump includes two kinds of structural style: the booster-type sealing energy-saving device for the horizontal pump and the booster-type sealing energy-saving device for the vertical pump respectively comprise a pump body, an impeller, a main shaft, a booster sealing orifice plate, a transmission key and a fastener; the impeller is fixed on the main shaft and rotates at a high speed along with the main shaft, the pressurizing sealing orifice plate is fixed at the inlet of the pump body through a fastener, and a sealing cavity structure is formed by a gap between the pressurizing sealing orifice plate and the impeller; the impeller is fixedly connected with the main shaft through a transmission key.
In an embodiment of the present invention, the seal cavity structure formed between the pressurized seal orifice plate and the impeller ring comprises: a pressurizing sealing pore plate fixedly connected to the pump body through a fastener by screw threads, and a plurality of through holes are uniformly distributed along the circumferential direction of the pore plate; the impeller is fixedly connected to the main shaft through a connecting screw by screw threads, and a stepped annular convex structure is arranged at the inlet of the impeller.
In a specific embodiment of the present invention, the impeller is screwed to the main shaft by a coupling screw.
In an embodiment of the present invention, the fastening member is a screw, and the pressurizing sealing orifice plate is fixed to the pump body by the screw through threads.
In an embodiment of the present invention, the through hole is formed in the pressurizing sealing orifice plate, and the shape of the through hole includes: cylindrical through hole, conical through hole and cylinder circular cone combination shape through-hole.
In an embodiment of the present invention, the depth range of the through hole is: 30-60 mm, pore size range: 5-30 mm; the length ratio range of the cylindrical and conical combined through hole is as follows: 1:1-3:1.
In the embodiment of the invention, a stepped annular convex structure is arranged at the impeller inlet.
In a specific embodiment of the present invention, the impeller is a shrouded impeller.
The positive progress effects of the invention are as follows: the booster-type sealing energy-saving device for the pump provided by the invention has the following advantages:
1. the application of the booster-type sealing energy-saving device for the pump fundamentally solves the problem of backflow in the cavity of the traditional pump, reduces the volume loss of the pump, improves the operating efficiency of the pump and achieves the purpose of high efficiency and energy saving of the pump.
2. The application of the booster-type sealing energy-saving device for the pump fundamentally improves the flow state of the inlet of the impeller, reduces the local loss in the pump, improves the operation efficiency of the pump and achieves the aim of saving energy of the pump.
3. The application of the booster-type sealing energy-saving device for the pump fundamentally solves the problems that the traditional pump sealing ring is easy to wear and difficult to disassemble.
The booster-type sealing energy-saving device for the pump improves the flowing state of a conveying medium at the inlet of the impeller, overcomes the defects that the traditional pump has large backflow and the conveying medium at the suction inlet of the impeller and backflow flow impact each other, improves the efficiency of conveying fluid by the pump, and solves the problems that a sealing ring of the traditional pump is easy to wear and difficult to disassemble.
Drawings
Fig. 1 shows a pressurized sealing energy-saving device for a horizontal pump.
Fig. 2 is a pressure-increasing type sealing energy-saving device for a vertical pump.
FIG. 3 is a schematic diagram of a cylindrical through hole pressurized sealing orifice plate structure.
FIG. 4 is a schematic diagram of a pressurized sealing plate with conical through holes.
FIG. 5 is a schematic diagram of a cylindrical-conical combined pressurized sealing orifice plate structure.
FIG. 6 is a second schematic diagram of a cylindrical-conical combined pressurized sealing orifice structure.
Fig. 7 is a schematic view of the flow state of the flow field of the booster-type sealing energy-saving device for the pump.
The following are the names corresponding to the reference numbers in the invention:
the pump body 1, impeller 2, main shaft 3, pressure boost seal orifice plate 4, drive key 5, coupling screw 6, fastener 7.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a supercharged sealing energy-saving device for a horizontal pump, fig. 2 is a supercharged sealing energy-saving device for a vertical pump, fig. 3 is a structural schematic diagram of a cylindrical through hole supercharged sealing orifice plate, and fig. 4 is a structural schematic diagram of a conical through hole supercharged sealing orifice plate. As shown in the above figures: the invention provides a booster-type sealing energy-saving device for a pump, which comprises two structural forms: the booster-type sealing energy-saving device for the horizontal pump (figure 1) and the booster-type sealing energy-saving device for the vertical pump (figure 2); each structural form comprises a pump body 1, an impeller 2, a main shaft 3, a pressurizing sealing hole plate 4, a transmission key 5, a connecting screw 6 and a fastening piece 7. The impeller is fixedly connected to the main shaft 3 by a connecting screw 6, and the impeller 2 is connected with the main shaft 3 through a transmission key 5 and rotates at a high speed along with the main shaft 3; the booster-type sealing orifice plate 4 is fixedly connected to the inlet of the pump body 1 through a fastener 7; the annular gap of the impeller 2 and the pressurizing sealing orifice plate 4 form a high-pressure sealing cavity.
The seal cavity structure formed by the annular gap between the pressurizing seal orifice plate 4 and the impeller 2 comprises: a pressurizing sealing pore plate 4 fixedly connected to the pump body 1 through a fastener 7 by screw threads, and a plurality of through holes are uniformly distributed along the circumferential direction of the pore plate 4; the impeller 2 is fixedly connected to the main shaft 3 through a connecting screw 6 through threads, and a stepped annular convex structure is arranged at the inlet of the impeller 2.
Fig. 3 is a schematic diagram of a cylindrical through hole pressurized sealing orifice plate structure, fig. 4 is a schematic diagram of a conical through hole pressurized sealing orifice plate structure, fig. 5 is one of a schematic diagram of a cylindrical and conical combined pressurized sealing orifice plate structure, and fig. 6 is a second schematic diagram of a cylindrical and conical combined pressurized sealing orifice plate structure, as shown in the above-mentioned figures: the through-hole is opened on pressure boost seal orifice plate 4, and the shape of through-hole includes: a cylindrical through hole (fig. 3), a conical through hole (fig. 4) and a cylindrical-conical combined through hole (fig. 5, fig. 6); through hole depth range: 30-60 mm, through hole aperture range: 5-30 mm; the length ratio range of the cylindrical and conical combined through hole is as follows: 1:1-3:1.
In the invention, the inlet of the impeller 2 is provided with a step-shaped annular bulge, and the impeller 2 is a closed impeller.
A booster-type sealing energy-saving device for a pump is characterized in that a booster-type sealing orifice plate 4 fixedly connected to a pump body 1 through a fastener 7 through threads and a rotating part impeller 2 with a stepped annular structure at a suction inlet form a high-pressure sealing cavity, and the impeller 2 is fixedly connected to a main shaft 3 through a connecting screw 6 through threads and rotates at a high speed along with the main shaft 3.
The booster-type sealed energy-saving device for pump is characterized by that the impeller 2 is connected with main shaft 3 by means of driving key 5, and is fixed on the main shaft 3 by means of screw-thread connection by means of connecting screw 6, and can be rotated at high speed with main shaft 3, the energy of fluid medium flowing through the impeller 2 is increased, and the pump cavity is back-flowed, i.e. a portion of high-energy conveying medium can be back-flowed into the inlet of impeller 2 by means of gap between pump body 1 and impeller 2. The booster-type sealing energy-saving device for the pump changes the flow field distribution state of fluid media at the suction inlet of the impeller (see figure 7), on one hand, a booster sealing orifice plate fixedly connected to the pump body 1 through the connecting screw 6 can effectively play a role in sealing, and prevents high-energy pump cavity from flowing back to the inlet of the impeller, thereby reducing the volume loss of the pump and improving the operation efficiency of the pump; on the other hand, the stepped annular bulge at the inlet of the impeller 2 guides the fluid medium flowing through the pressurizing sealing orifice plate 4, so that the flowing direction of the fluid medium is consistent with the flowing direction of the fluid pumped by the suction inlet of the impeller 2, the local loss in the pump is reduced, and the aim of high efficiency and energy conservation of the pump is fulfilled.
The working process of the booster-type sealing energy-saving device for the pump is as follows:
during the operation of the pump, the impeller 2 is connected with the main shaft 3 through the transmission key 5, is fixed on the main shaft 3 through the thread connection by the connection screw 6 and rotates at a high speed along with the main shaft 3, the rotating impeller 2 transfers energy to a medium passing through an impeller flow passage, the energy of the medium is increased and flows into a pump cavity from an outlet of the impeller 2, and a pump cavity reflows to flow back to an inlet of the impeller 2 through a gap between the pump body 1 and the impeller 2, so that the loss of the flow in the pump is caused. In order to improve the operation efficiency of the pump, the design of the booster-type sealing energy-saving device for the pump fundamentally changes the flow field distribution state of fluid media at the suction port of the impeller. On one hand, a pressurizing sealing orifice plate fixedly connected to the pump body 1 through a fastening piece 7 can effectively play a role in sealing, and prevents the high-energy pump cavity from returning to the impeller suction inlet, so that the volume loss is reduced, and the operation efficiency of the pump is improved; on the other hand, the stepped annular bulge at the inlet of the impeller 2 guides the fluid medium flowing through the pressurizing sealing orifice plate 4, so that the flowing direction of the fluid medium is consistent with the flowing direction of the fluid pumped by the suction inlet of the impeller 2, the local loss in the pump is reduced, and the aim of high efficiency and energy conservation of the pump is fulfilled.
The working principle of the booster-type sealing energy-saving device for the pump is as follows (figure 7): when the pumped fluid flows through the impeller suction inlet, part of the fluid reaches flow surfaces b and b ' through cylindrical through holes ab and a ' b ' of a pressurizing sealing orifice plate and then enters tapered holes bc and b ' c ', the flow area through which the fluid medium flows is gradually increased, the flow speed is gradually reduced, the pressure is increased, and the speed can be converted into pressure energy along with the flow area. And finally, the high-energy fluid is sprayed into a gap between the pump sealing pore plate and the impeller, so that the energy of the backflow of the pump cavity can be balanced, and the effect of preventing the backflow of the pump cavity from returning to the suction inlet of the impeller is achieved. If the pressure of the fluid medium after flowing through the sealing orifice plate and the return pressure of the pump cavity are balanced, complete sealing can be realized. The liquid flowing back to the pump suction inlet from the gap between the pump pressurizing sealing orifice plate and the impeller changes the flow direction when entering the impeller through the stepped annular bulge at the impeller suction inlet, the direction of the liquid is consistent with the flow direction of the fluid pumped by the impeller suction inlet, and the local loss caused by flow impact in the pump is effectively avoided.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides an economizer is sealed to booster-type for pump which characterized in that: the booster-type sealing energy-saving device for the pump comprises two structural forms: the booster-type sealing energy-saving device for the horizontal pump and the booster-type sealing energy-saving device for the vertical pump respectively comprise a pump body, an impeller, a main shaft, a booster sealing orifice plate, a transmission key and a fastener; the impeller is fixed on the main shaft and rotates at a high speed along with the main shaft, the pressurizing sealing orifice plate is fixed at the inlet of the pump body through a fastener, and a sealing cavity structure is formed by a gap between the pressurizing sealing orifice plate and the impeller; the impeller is fixedly connected with the main shaft through a transmission key.
2. The pressurized seal economizer for pumps of claim 1 wherein: the sealed cavity structure that forms between pressurization sealed orifice plate and the impeller ring includes: a pressurizing sealing pore plate fixedly connected to the pump body through a fastener by screw threads, and a plurality of through holes are uniformly distributed along the circumferential direction of the pore plate; the impeller coupled to the main shaft is fixed by a coupling screw through a screw.
3. The supercharged sealing energy-saving device for the pump according to claim 1 or 2, characterized in that: the impeller is fixed on the main shaft through threads by a connecting screw.
4. The pressurized seal economizer for pumps of claim 1 wherein: the fastener is a screw, and the pressurizing sealing orifice plate is fixed on the pump body through threads by the screw.
5. The pressurized seal economizer for pumps of claim 2 wherein: the through-hole is opened on the sealed orifice plate of pressurization, and the shape of through-hole includes: cylindrical through hole, conical through hole and cylinder circular cone combination shape through-hole.
6. The pressurized seal economizer for pumps of claim 5 wherein: the through hole depth range is as follows: 30-60 mm, pore size range: 5-30 mm; the length ratio range of the cylindrical and conical combined through hole is as follows: 1:1-3:1.
7. The pressurized seal economizer for pumps of claim 1 wherein: and a stepped annular bulge structure is arranged at the inlet of the impeller.
8. The pressurized seal economizer for pumps of claim 1 wherein: the impeller is a closed impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110340519.4A CN113027805B (en) | 2021-03-30 | 2021-03-30 | Pressurized sealing energy-saving device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110340519.4A CN113027805B (en) | 2021-03-30 | 2021-03-30 | Pressurized sealing energy-saving device for pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113027805A true CN113027805A (en) | 2021-06-25 |
| CN113027805B CN113027805B (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110340519.4A Active CN113027805B (en) | 2021-03-30 | 2021-03-30 | Pressurized sealing energy-saving device for pump |
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| Country | Link |
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| CN (1) | CN113027805B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194763A (en) * | 2016-09-20 | 2016-12-07 | 浙江工业大学 | The self-priming centrifugal pump of high anti-cavitation |
| CN106438449A (en) * | 2016-10-12 | 2017-02-22 | 浙江远邦流体科技有限公司 | Seal assembly for centrifugal pump and centrifugal pump |
| CN214742310U (en) * | 2021-03-30 | 2021-11-16 | 上海凯泉泵业（集团）有限公司 | Booster-type sealing energy-saving device for pump |
-
2021
- 2021-03-30 CN CN202110340519.4A patent/CN113027805B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194763A (en) * | 2016-09-20 | 2016-12-07 | 浙江工业大学 | The self-priming centrifugal pump of high anti-cavitation |
| CN106438449A (en) * | 2016-10-12 | 2017-02-22 | 浙江远邦流体科技有限公司 | Seal assembly for centrifugal pump and centrifugal pump |
| CN214742310U (en) * | 2021-03-30 | 2021-11-16 | 上海凯泉泵业（集团）有限公司 | Booster-type sealing energy-saving device for pump |
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| Publication number | Publication date |
|---|---|
| CN113027805B (en) | 2024-05-17 |
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