CN112963377A - Vertical pump with guide bearing body provided with heat-insulating jacket - Google Patents
Vertical pump with guide bearing body provided with heat-insulating jacket Download PDFInfo
- Publication number
- CN112963377A CN112963377A CN202110336052.6A CN202110336052A CN112963377A CN 112963377 A CN112963377 A CN 112963377A CN 202110336052 A CN202110336052 A CN 202110336052A CN 112963377 A CN112963377 A CN 112963377A
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- Prior art keywords
- guide bearing
- heat
- pump
- temperature medium
- insulating jacket
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a vertical pump, in particular to a vertical pump with a guide bearing body provided with a heat-insulating jacket, which solves the problems that a guide bearing gap is easy to generate crystals when the vertical pump conveys a medium, the service life is easy to reduce, and the maintenance and cleaning difficulty is high. The pump comprises a pump body, a spitting seat arranged on the pump body, a pump shaft, and a shaft sleeve and a guide bearing body which are sequentially arranged on the pump shaft from inside to outside. The two sides of the spitting seat are symmetrically provided with a high-temperature medium inlet and a high-temperature medium outlet, and the high-temperature medium inlet and the high-temperature medium outlet are connected with a first opening on the spitting seat through a pipeline. The guide bearing body comprises a guide bearing flange, a guide bearing, a heat-preservation jacket, an upper sealing cover and a lower sealing cover. Second openings are symmetrically formed in two sides of the guide bearing flange, a first channel is arranged between the first opening and the second opening, a second channel is arranged in the guide bearing flange, and the second channel is communicated with the second opening and the heat-preservation jacket. In order to prevent the leakage of high-temperature medium and the pollution of the conveying medium in the pump, a sealing ring is also arranged.
Description
Technical Field
The invention relates to a vertical pump, in particular to a vertical pump with a guide bearing body provided with a heat-insulating jacket.
Background
The vertical pump generally needs to use a guide bearing to support a pump shaft, and the guide bearing plays a role in radially supporting and fixing the pump shaft, and the guide bearing needs to be lubricated and cooled by cleaning liquid during working. Some chemical engineering media are liquid at a certain temperature, and when the temperature is reduced to a specific temperature, the liquid can separate out crystals, and when the crystals are conveyed by a vertical pump, the crystals can damage a lubricating liquid film formed when the guide bearing works, so that the guide bearing is worn, and the service life of the guide bearing is shortened.
In actual production, when the vertical pump delivers a high-temperature easily-crystallized medium, the temperature of a guide bearing on the upper part of the pump can be reduced after the pump is stopped, crystals can appear between shaft sleeves of the guide bearing, if the crystals are automatically melted without heat preservation and heating, the gap surface of the guide bearing can be abraded when the pump is restarted, and the service life of the guide bearing is shortened. At present, the common mode is to perform heat preservation and insulation treatment on the whole pump to prevent the temperature in the pump cavity from decreasing, but the method has too long pump stopping time, and when no high-temperature medium is in the pipeline to maintain the temperature, the temperature in the pump cavity can also decrease, and the medium can also crystallize. In addition, the method increases the maintenance difficulty of the pump, the cleaning work of the guide bearing and the shaft sleeve is very complicated when the pump is maintained every time, even the pump cannot work normally without cleaning, and the maintenance workload is large. Therefore, there is an urgent need for a heat insulation structure that can prevent the occurrence of crystallization in the gap between the guide bearings and reduce the difficulty of pump maintenance.
Disclosure of the invention
The invention aims to solve the problems that a guide bearing gap is easy to generate crystals when a vertical pump conveys a medium, the service life is easy to reduce, and the difficulty in maintenance and cleaning is high, and provides a vertical pump with a guide bearing body provided with a heat-insulating jacket.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the utility model provides a vertical pump that guide bearing body area heat preservation pressed from both sides cover, includes the pump body, installs the spit seat on the pump body, the pump shaft to and from interior to exterior install axle sleeve, the guide bearing body on the pump shaft in proper order, its characterized in that:
a high-temperature medium inlet and a high-temperature medium outlet are symmetrically arranged on two sides of the spitting seat, and the high-temperature medium inlet and the high-temperature medium outlet are connected with a first opening on the spitting seat through pipelines;
the guide bearing body comprises a guide bearing flange, a guide bearing, a heat-insulating jacket, an upper sealing cover and a lower sealing cover; the guide bearing body is arranged on the discharge seat through a guide bearing flange, and the guide bearing and the heat-preservation jacket are sequentially sleeved outside the shaft sleeve;
the upper sealing cover and the lower sealing cover are respectively connected between the guide bearing and the guide bearing flange, a closed annular cavity is formed between the guide bearing and the guide bearing flange, and the annular cavity forms the heat-insulating jacket;
second openings are symmetrically formed in two sides of the guide bearing flange, and a first channel is arranged between the first opening and the second opening; and a second channel is arranged in the guide bearing flange, and the second channel is communicated with the second opening and the heat-preservation jacket.
Furthermore, the inside of the heat-insulating jacket is provided with internal heat exchange ribs, the inner ends and the outer ends of the internal heat exchange ribs are respectively connected with the guide bearing and the guide bearing flange.
Furthermore, a processing hole is formed in the guide bearing flange located on the outer side of the second channel, and two screw plugs are installed at the processing hole.
Furthermore, the guide bearing adopts a sliding bearing, a notch is formed in the guide bearing, and a guide bearing rotation prevention block is installed at the notch to prevent the guide bearing from rotating.
Furthermore, a sealing ring is arranged between the guide bearing flange and the spitting seat, and the sealing ring is arranged on two sides of the second opening.
Further, flanges are arranged on the high-temperature medium inlet and the high-temperature medium outlet.
Further, the high-temperature medium is steam or nitrogen.
Further, the surface of the shaft sleeve is hardened, and the hardness is more than HRC 52; the guide bearing is made of graphite antimony-impregnated material.
The invention has the beneficial effects that:
1. the guide bearing is prevented from being worn by the crystal, and the service life of the guide bearing is prolonged. The pump is stopped for a period of time and then is restarted for 10 minutes before the pump is started, high-temperature medium is injected into the heat-preservation jacket through the high-temperature medium inlet and the high-temperature medium outlet to preheat the guide bearing, and the pump is started after crystals are completely dissolved, so that the problem of the crystals appearing on the guide bearing and the shaft sleeve is thoroughly solved. And the whole high-temperature medium pipeline is completely isolated from the pump conveying medium, so that the medium conveyed by the pump cannot be polluted, and the high-temperature medium pipeline is suitable for occasions where the high-temperature medium is conveyed by the pump and the crystallization occurs after the shutdown temperature of the pump is reduced to a specific temperature.
2. The maintenance and the cleaning are convenient. The method is characterized in that crystals appearing on the guide bearing and the shaft sleeve are dissolved before the pump is started, so that the guide bearing and the shaft sleeve are simply cleaned without crystals when the pump is maintained.
3. The structure is simple. The guide bearing body is simple in structure, the heat-insulation jacket and the high-temperature steam pipeline are additionally arranged on the original basis, the difficulty in machining and assembling the guide bearing body with the heat-insulation jacket in production is low, and popularization and use are facilitated.
4. The operation is simple. After the pump is stopped for a period of time, only 10 minutes before restarting the pump, a high-temperature medium is introduced to preheat the guide bearing, and the pump is started after the crystals are completely dissolved.
Drawings
FIG. 1 is a structural view of an embodiment of a vertical pump with a guide bearing body having a heat-insulating jacket according to the present invention
FIG. 2 is a structural diagram of the heat-insulating jacket and the guide bearing body in the embodiment of the invention
The reference numbers are as follows:
1-guide bearing body, 2-spit seat, 3-high temperature medium inlet, 4-high temperature medium outlet, 5-first opening, 6-shaft sleeve, 7-heat preservation jacket, 8-upper sealing cover, 9-lower sealing cover, 10-guide bearing flange, 11-guide bearing, 12-second opening, 13-first channel, 14-second channel, 15-plug, 16-internal heat exchange rib, 17-guide bearing anti-rotation block, 18-sealing ring and 19-pump shaft.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings.
As shown in fig. 1, a vertical pump with a guide bearing body and a heat-insulating jacket comprises a pump body, a spitting seat 2 installed on the pump body, a pump shaft 19, and a shaft sleeve 6 and a guide bearing body 1 which are sequentially installed on the pump shaft 19 from inside to outside.
The two sides of the spitting seat 2 are symmetrically provided with a high-temperature medium inlet 3 and a high-temperature medium outlet 4, the high-temperature medium inlet 3 and the high-temperature medium outlet 4 are connected with a first opening 5 on the spitting seat 2 through steel pipes, and inlet and outlet flanges are welded on the high-temperature medium inlet 3 and the high-temperature medium outlet 4.
As the shaft of the pump is longer and the diameter is smaller, in order to prevent the abrasion between the pump shaft 19 and the shaft sleeve 6 in the operation process, the surface of the shaft sleeve 6 is hardened, the hardness is more than HRC52, and the pump is more wear-resistant.
As shown in fig. 1 and 2, the guide bearing body 1 includes a guide bearing flange 10, a guide bearing 11, a heat preservation jacket 7, an upper sealing cover 8 and a lower sealing cover 9, the guide bearing body 1 is installed below the spit-out base 2 through the guide bearing flange 10, and the guide bearing body 1 is fixed through a gland and a nut so as to be integrally fixed. The guide bearing 11 and the heat-insulating jacket 7 are sequentially sleeved outside the shaft sleeve 6. The guide bearing 11 is made of graphite antimony-impregnated material, and has high strength and good wear resistance.
The upper sealing cover 8 and the lower sealing cover 9 are respectively connected between the guide bearing 11 and the guide bearing flange 10, a closed annular cavity is formed between the guide bearing 11 and the guide bearing flange 10, and the annular cavity forms the heat-insulating jacket 7. When the heat-preservation jacket body 7 is cast on the guide bearing body 1, the end face of a casting of the guide bearing 11 is firstly processed to be smooth, and then the upper sealing cover 8 and the lower sealing cover 9 are welded.
The guide bearing flange 10 positioned on the outer side of the second channel 14 is provided with a processing hole, so that the processing of the second channel 14 can be facilitated, the high-temperature medium is prevented from leaking and polluting the conveying medium in the pump, and two screw plugs 15 are arranged at the processing hole.
In order to further prevent the leakage of the high-temperature medium, the guide bearing flange 10 is provided with a seal ring 18 between the discharge seat 2 and the guide bearing flange, and the seal ring 18 is attached to both sides of the second opening 12.
In order to enhance the heat exchange effect, the heat-insulating jacket 7 is internally provided with internal heat exchange ribs 16, the inner ends and the outer ends of which are respectively connected with the guide bearing 11 and the guide bearing flange 10.
The guide bearing 11 adopts a sliding bearing, a notch is arranged on the guide bearing 11, a guide bearing anti-rotation block 17 is arranged at the notch, and the guide bearing 11 is prevented from rotating by fixing the guide bearing with a bolt.
In summary, the high-temperature medium enters from the high-temperature medium inlet 3, enters the first opening 5 on the spit-out base 2 along the steel pipe, then passes through the first channel 13 and the second channel 14, then enters the heat-insulating jacket 7, preheats the guide bearing 11, melts the crystal in the gap of the guide bearing 11, passes through the second channel 14 and the first channel 13 on the other side, and finally flows out from the high-temperature medium outlet 4 along the steel pipe, thereby completing the whole heat exchange process. The high-temperature medium can adopt steam or nitrogen. The whole high-temperature medium pipeline is completely isolated from the pump conveying medium, and the medium conveyed by the pump cannot be polluted.
The details of the operation of the pump are: and (3) introducing high-temperature steam or nitrogen into the high-temperature medium inlet 3 10 minutes before starting the pump, preheating the guide bearing 11, and starting the pump after the crystals are completely melted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a vertical pump that guide bearing body area heat preservation pressed from both sides cover, includes the pump body, installs spit seat (2) on the pump body, pump shaft (19) to and from interior to exterior install axle sleeve (6), guide bearing body (1) on pump shaft (19) in proper order, its characterized in that:
a high-temperature medium inlet (3) and a high-temperature medium outlet (4) are symmetrically arranged on two sides of the spitting seat (2), and the high-temperature medium inlet (3) and the high-temperature medium outlet (4) are connected with a first opening (5) in the spitting seat (2) through pipelines;
the guide bearing body (1) comprises a guide bearing flange (10), a guide bearing (11), a heat-insulating jacket (7), an upper sealing cover (8) and a lower sealing cover (9); the guide bearing body (1) is arranged on the spitting seat (2) through a guide bearing flange (10), and a guide bearing (11) and a heat-preservation jacket (7) are sequentially sleeved outside the shaft sleeve (6);
the upper sealing cover (8) and the lower sealing cover (9) are respectively connected between the guide bearing (11) and the guide bearing flange (10), a closed annular cavity is formed between the guide bearing (11) and the guide bearing flange (10), and the annular cavity forms the heat-insulating jacket (7);
second openings (12) are symmetrically formed in two sides of the guide bearing flange (10), and a first channel (13) is formed between the first opening (5) and the second opening (12); a second channel (14) is arranged in the guide bearing flange (10), and the second channel (14) is communicated with the second opening (12) and the heat-preservation jacket (7).
2. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 1, wherein: and an inner heat exchange rib (16) with the inner end and the outer end respectively connected with the guide bearing (11) and the guide bearing flange (10) is arranged in the heat-insulating jacket (7).
3. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 2, wherein: and a guide bearing flange (10) positioned outside the second channel (14) is provided with a processing hole, and two screw plugs (15) are arranged at the processing hole.
4. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 3, wherein: the guide bearing (11) adopts a sliding bearing, a notch is arranged on the guide bearing (11), and a guide bearing anti-rotation block (17) is arranged at the notch to prevent the guide bearing (11) from rotating.
5. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 4, wherein: and a sealing ring (18) is arranged between the guide bearing flange (10) and the spitting seat (2), and the sealing ring (18) is arranged on two sides of the second opening (12).
6. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 5, wherein: and flanges are arranged on the high-temperature medium inlet (3) and the high-temperature medium outlet (4).
7. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claims 1 to 6, wherein: the high-temperature medium is steam or nitrogen.
8. The vertical pump with the guide bearing body provided with the heat-insulating jacket as claimed in claim 7, wherein: the surface of the shaft sleeve (6) is hardened, and the hardness is more than HRC 52; the guide bearing (11) is made of graphite antimony-impregnated material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336052.6A CN112963377A (en) | 2021-03-29 | 2021-03-29 | Vertical pump with guide bearing body provided with heat-insulating jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336052.6A CN112963377A (en) | 2021-03-29 | 2021-03-29 | Vertical pump with guide bearing body provided with heat-insulating jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112963377A true CN112963377A (en) | 2021-06-15 |
Family
ID=76278848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110336052.6A Pending CN112963377A (en) | 2021-03-29 | 2021-03-29 | Vertical pump with guide bearing body provided with heat-insulating jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112963377A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201991784U (en) * | 2011-03-14 | 2011-09-28 | 周寿云 | Jacketed long-shaft pump |
| EP2436942A1 (en) * | 2010-09-30 | 2012-04-04 | KSB Aktiengesellschaft | Shaft bearing for centrifugal pumps |
| CN203702638U (en) * | 2014-02-13 | 2014-07-09 | 康迈斯(滁州)机电有限公司 | Sulfur submerged pump sliding bearing structure |
| CN209959537U (en) * | 2019-04-23 | 2020-01-17 | 大连耐酸泵技术开发公司 | Protective device for immersed in easily-crystallized medium neutral long-shaft submerged pump sliding bearing |
| CN209959477U (en) * | 2019-04-23 | 2020-01-17 | 大连耐酸泵技术开发公司 | High-temperature-resistant double-outlet type single-stage submerged pump |
| CN210977997U (en) * | 2019-11-08 | 2020-07-10 | 无锡斯普流体设备有限公司 | Submerged pump sliding bearing cooling device |
| CN211692860U (en) * | 2019-12-18 | 2020-10-16 | 百鸿国际机械(上海)有限公司 | Long-shaft submerged pump |
| CN212774801U (en) * | 2020-08-14 | 2021-03-23 | 烟台恒邦泵业有限公司 | Submerged pump with washing device |
-
2021
- 2021-03-29 CN CN202110336052.6A patent/CN112963377A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2436942A1 (en) * | 2010-09-30 | 2012-04-04 | KSB Aktiengesellschaft | Shaft bearing for centrifugal pumps |
| CN201991784U (en) * | 2011-03-14 | 2011-09-28 | 周寿云 | Jacketed long-shaft pump |
| CN203702638U (en) * | 2014-02-13 | 2014-07-09 | 康迈斯(滁州)机电有限公司 | Sulfur submerged pump sliding bearing structure |
| CN209959537U (en) * | 2019-04-23 | 2020-01-17 | 大连耐酸泵技术开发公司 | Protective device for immersed in easily-crystallized medium neutral long-shaft submerged pump sliding bearing |
| CN209959477U (en) * | 2019-04-23 | 2020-01-17 | 大连耐酸泵技术开发公司 | High-temperature-resistant double-outlet type single-stage submerged pump |
| CN210977997U (en) * | 2019-11-08 | 2020-07-10 | 无锡斯普流体设备有限公司 | Submerged pump sliding bearing cooling device |
| CN211692860U (en) * | 2019-12-18 | 2020-10-16 | 百鸿国际机械(上海)有限公司 | Long-shaft submerged pump |
| CN212774801U (en) * | 2020-08-14 | 2021-03-23 | 烟台恒邦泵业有限公司 | Submerged pump with washing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210615 |