CN214945207U - Centrifugal pump bearing box capable of preventing lubricating oil from leaking - Google Patents
Centrifugal pump bearing box capable of preventing lubricating oil from leaking Download PDFInfo
- Publication number
- CN214945207U CN214945207U CN202121100565.9U CN202121100565U CN214945207U CN 214945207 U CN214945207 U CN 214945207U CN 202121100565 U CN202121100565 U CN 202121100565U CN 214945207 U CN214945207 U CN 214945207U
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- Prior art keywords
- cavity
- lubricating oil
- bearing
- oil
- bearing box
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- Expired - Fee Related
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 87
- 239000003921 oil Substances 0.000 claims abstract description 49
- 210000004907 gland Anatomy 0.000 claims abstract description 28
- 239000002244 precipitate Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 29
- 239000013049 sediment Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- 239000000314 lubricant Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a can prevent centrifugal pump bearing box of lubricating oil leakage, including bearing box, pump shaft, left bearing, right bearing, the left gland of bearing, the right gland of bearing, left skeleton oil blanket, right skeleton oil blanket, oil and gas separator, oil drain control valve, left cavity, right cavity, lubricating oil cavity, exhaust hole, oil drain hole, left flowing back passageway has been seted up to the left cavity lower extreme of bearing box, and right flowing back passageway has been seted up to right cavity lower extreme, left cavity is linked together through left flowing back passageway and lubricating oil cavity, right cavity is linked together through right flowing back passageway and lubricating oil cavity, the utility model has the advantages of simple structure, low in production cost, can prevent that lubricating oil from leaking, the precipitate can not be taken, bearing long service life by stirring.
Description
Technical Field
The utility model relates to a cantilever centrifugal pump technical field, specific centrifugal pump bearing box that can prevent lubricating oil leakage that says so.
Background
The horizontal cantilever centrifugal pump is mainly used in the fields of chemical industry, agriculture, urban water, domestic water and the like, and is widely used due to simple structure, low price, good stability and good universality.
The structure of the existing horizontal cantilever centrifugal pump is shown in figure 1, and comprises a centrifugal pump, a bearing box and a motor, wherein the centrifugal pump comprises a pump shell, a pump cover, an impeller and a shaft seal, the bearing box comprises a bearing box body, a pump shaft, a left bearing, a right bearing, a bearing left gland, a bearing right gland, a left skeleton oil seal and a right skeleton oil seal, the bearing left gland is arranged at the left side of the bearing box body and is fixedly connected with the bearing box body, the bearing right gland is arranged at the right side of the bearing box body and is fixedly connected with the bearing box body, the pump shaft is arranged in the bearing box body, the left side is connected with the bearing box body through the left bearing and penetrates out of the bearing left gland, the right side is connected with the bearing box body through the right bearing and penetrates out of the bearing right gland, a left cavity is formed between the left bearing and the bearing left gland, a right cavity is formed between the right bearing and the bearing right gland, a lubricating oil cavity is arranged between the left bearing and the right bearing in the bearing box body, and the lower end of the lubricating oil cavity is provided with an oil drain hole communicated with the lubricating oil cavity, the oil drain hole is connected with an oil drain control valve, the upper end of the bearing box body is provided with an oil-gas separator, and the oil-gas separator is provided with an exhaust hole; the impeller is arranged in the pump shell, the pump cover and the pump shell are fixed to block high-pressure liquid in the pump shell, a pump cover through hole for the pump shaft to penetrate through is formed in the pump cover, the left side of the pump shaft extends out of the bearing box and then penetrates through the pump cover through hole to extend into the pump shell to be fixedly connected with the impeller, the right side of the pump shaft extends out of the bearing box and then is connected with the motor through the coupler, and the through hole of the pump cover is provided with a shaft seal to avoid liquid leakage.
The existing structure has the following defects: firstly, the bearing rotates to heat lubricating oil and generate gas, the gas cannot be timely discharged to increase the pressure in the bearing box, the pressure in the left cavity and the pressure in the right cavity increase, the lubricating oil is easy to leak from the framework oil seal, the bearing cannot be lubricated and is easy to wear, the bearing is troublesome to replace, the requirement on the maintenance skill of maintenance personnel is high, and the maintenance cost is increased; secondly, solid particles generated during the rotation of the bearing enter the lubricating oil, and are stirred in the rotating process of the bearing and enter the bearing along with the lubricating oil, so that the bearing is easily abraded.
Disclosure of Invention
The utility model aims at solving the deficiencies of the prior art, providing a simple structure, low in production cost, can prevent that lubricating oil from leaking, the precipitate can not be stirred and is taken up, bearing long service life's can prevent the centrifugal pump bearing case that lubricating oil leaked.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a can prevent centrifugal pump bearing box of lubricating oil leakage, includes bearing box, pump shaft, left bearing, right bearing, the left gland of bearing, the right gland of bearing, left skeleton oil blanket, right skeleton oil blanket, oil and gas separator, oil drain control valve, left cavity, right cavity, lubricating oil cavity, exhaust hole, oil drain hole, its characterized in that: the bearing box body is characterized in that a left liquid drainage channel is formed in the lower end of a left cavity of the bearing box body, a right liquid drainage channel is formed in the lower end of a right cavity of the bearing box body, the left cavity is communicated with a lubricating oil cavity through the left liquid drainage channel, the right cavity is communicated with the lubricating oil cavity through the right liquid drainage channel, and the left liquid drainage channel and the right liquid drainage channel are arranged to reduce the oil level of the left cavity and the oil level of the right cavity, reduce the leakage possibility of lubricating oil from a left framework oil seal and a right framework oil seal and prolong the service life of the bearing.
Left exhaust passage has been seted up to bearing box's left cavity upper end, and right exhaust passage has been seted up to right cavity upper end, left side cavity is linked together through left exhaust passage and lubricating oil cavity, right side cavity is linked together through right exhaust passage and lubricating oil cavity, through setting up left exhaust passage, right exhaust passage to make things convenient for the gas in the sealed cavity to get into lubricating oil cavity and discharge through the exhaust hole, reduce the pressure in left cavity and the right cavity, prevent that lubricating oil from left sealed skeleton, the leakage of right sealed skeleton department, with the life of extension bearing.
Minimum point position of lubricant cavity lower extreme is equipped with the precipitate collecting vat, the upper end and the lubricant cavity of precipitate collecting vat are linked together, and the tank bottom is equipped with the oil drain, sets up the precipitate collecting vat through the minimum at the lubricant cavity, is convenient for collect the solid particle in the bearing housing, and the solid particle can not stirred, prevents that the solid particle from getting into in the bearing along with lubricating oil again.
Lubricating oil chamber's lower terminal surface sets up to the inclined plane of the orientation downward sloping towards the precipitate collecting vat to ensure that solid particle can enter into the precipitate collecting vat along the inclined plane, be convenient for solid particle's collection.
Oil and gas separator establishes the peak position in the lubricating oil chamber upper end, and oil and gas separator's position sets up, is favorable to gaseous discharge.
The up end of lubricating oil chamber sets up to the inclined plane towards oil and gas separator's direction tilt up to ensure that collection gas that can be timely and discharge.
The utility model has the advantages that: the left liquid drainage channel and the right liquid drainage channel are arranged, so that the oil levels of the left cavity and the right cavity are reduced, and the chance of leakage of lubricating oil from the left framework oil seal and the right framework oil seal is reduced; the left exhaust channel and the right exhaust channel are arranged, so that gas in the cavity can conveniently enter the lubricating oil cavity and be exhausted through the exhaust hole, the pressure in the left cavity and the right cavity is reduced, the lubricating oil is prevented from leaking from the left sealing framework and the right sealing framework, and the service life of the bearing is prolonged; the oil-gas separator is arranged at the highest point of the lubricating oil cavity, so that gas is discharged conveniently; through set up the precipitate collecting vat in the minimum of lubricating oil chamber, be convenient for collect the solid particle in the bearing box, solid particle can not stirred up, prevents that solid particle from getting into in the bearing along with lubricating oil again.
Drawings
Fig. 1 is a schematic structural view of a prior art horizontal cantilever centrifugal pump.
Fig. 2 is the structural schematic diagram of the horizontal cantilever centrifugal pump of the utility model.
Reference numerals: the centrifugal pump comprises a centrifugal pump 1, a pump shell 101, a pump cover 102, an impeller 103, a shaft seal 104, a bearing box 2, a bearing box 201, a pump shaft 202, a right bearing 203, a bearing right gland 204, a right cavity 205, a right framework oil seal 206, an oil-gas separator 207, an exhaust hole 208, an oil discharge control valve 209, a precipitate collecting tank 201, a right exhaust channel 211, a right drainage channel 212, a left bearing 213, a bearing left gland 214, a left cavity 215, a left framework oil seal 216, a left exhaust channel 217, a left drainage channel 218, lubricating oil 3 and gas 4.
Detailed Description
The present invention will be described with reference to the accompanying drawings and examples.
As shown in fig. 1, the existing horizontal cantilever centrifugal pump includes a centrifugal pump 1, a bearing box 2 and a motor, the centrifugal pump 1 includes a pump casing 101, a pump cover 102, an impeller 103 and a shaft seal 104, the bearing box 2 includes a bearing box 201, a pump shaft 202, a left bearing 213, a right bearing 203, a bearing left gland 214, a bearing right gland 204, a left skeleton oil seal 216 and a right skeleton oil seal 206, the bearing left gland 214 is disposed on the left side of the bearing box 201 and fixedly connected with the bearing box 201, the bearing right gland 204 is disposed on the right side of the bearing box 201 and fixedly connected with the bearing box 201, the pump shaft 202 is disposed in the bearing box 201, the left side is connected with the bearing box 201 through the left bearing 213 and penetrates out of the bearing left gland 214, the right side is connected with the bearing box 201 through the right bearing 203 and penetrates out of the bearing right gland 204, a left cavity 215 is formed between the left bearing 213 and the bearing left gland 214, a right cavity 205 is formed between the right bearing 203 and the bearing right gland 204, a lubricating oil cavity is arranged between the left bearing and the right bearing in the bearing box body, the lower end of the lubricating oil cavity is provided with an oil drain hole communicated with the lubricating oil cavity, the oil drain hole is connected with an oil drain control valve 209, the upper end of the lubricating oil cavity is provided with an oil-gas separator 207 communicated with the lubricating oil cavity, and the oil-gas separator 207 is provided with an exhaust hole 208; the impeller 103 is arranged in the pump shell 101, the pump cover 102 is fixed with the pump shell 101 so as to seal high-pressure liquid in the pump shell 101, a pump cover through hole for the pump shaft 202 to penetrate through is formed in the pump cover 102, the left side of the pump shaft 202 extends out of the bearing box and penetrates through the pump cover through hole to extend into the pump shell 101 to be fixedly connected with the impeller 103, the right side of the pump shaft 202 extends out of the bearing box and is connected with the motor through the coupler, and the shaft seal 104 is arranged at the position of the pump cover through hole so as to avoid liquid leakage.
As shown in fig. 2, a left liquid drainage channel 218 is formed at the lower end of the left cavity 215 of the bearing box 201, a right liquid drainage channel 212 is formed at the lower end of the right cavity 205, the left cavity 215 is communicated with the lubricating oil cavity through the left liquid drainage channel 218, the right cavity 205 is communicated with the lubricating oil cavity through the right liquid drainage channel 212, and the left liquid drainage channel 218 and the right liquid drainage channel 212 are arranged to reduce the oil levels of the left cavity 215 and the right cavity 205 and reduce the possibility of leakage of lubricating oil from the left framework oil seal 216 and the right framework oil seal 206.
The oil-gas separator 207 is arranged at the highest point of the upper end of the lubricating oil cavity, the oil-gas separator 207 is used for collecting gas, the gas is separated and then discharged, lubricating oil is left, and the oil-gas separator 207 is arranged at the highest point of the lubricating oil cavity and is beneficial to discharging the gas. In the embodiment, the upper end surface of the lubricating oil cavity is arranged to be an inclined surface and is inclined upwards towards the oil-gas separator, so that gas can be collected and discharged timely.
The lowest point of the lower end of the lubricating oil cavity is provided with a precipitate collecting groove 210, the upper end of the precipitate collecting groove 210 is communicated with the lubricating oil cavity, the bottom of the groove is provided with an oil drain hole, the precipitate collecting groove 210 is arranged at the lowest point of the lower end of the lubricating oil cavity, so that solid particles in the bearing box body can be collected conveniently, the solid particles cannot be stirred, and the solid particles are prevented from entering the bearing along with lubricating oil.
In this embodiment, the lower end surface of the lubricating oil chamber is a slope inclined downward toward the direction of the precipitate collecting tank 210, and the joint of the precipitate collecting tank and the lower end surface of the lubricating oil chamber is smoothly connected in an arc shape, so that the precipitate can be precipitated into the precipitate collecting tank 210 under the action of gravity.
In fig. 2, reference numeral 3 denotes lubricating oil provided at the lower end of the lubricating oil chamber, and reference numeral 4 denotes gas, and the generated gas is discharged at the upper end of the lubricating oil chamber through the gas discharge hole.
When the horizontal cantilever centrifugal pump works, the motor drives the pump shaft 202 and the impeller 103 to rotate through the coupler, the impeller 103 rotates to pressurize liquid and then discharge the liquid out of the pump shell 101, the pump cover 102 is used for plugging high-pressure liquid in the pump shell 101, and the through hole of the pump cover is provided with the shaft seal 104 to avoid the leakage of the liquid; a left bearing 213 is arranged on the left side of the bearing box 2, a right bearing 203 is arranged on the right side of the bearing box and is used for supporting the pump shaft 202 to rotate and keeping the cantilever rigidity of the pump shaft 202, a bearing left gland 214 is arranged on the left side of the left bearing 213 and is used for fixing the position of the left bearing 213, a bearing right gland 204 is arranged on the right side of the right bearing 203 and is used for fixing the position of the right bearing 203, a left framework oil seal 216 is arranged at the position where the pump shaft 202 is in contact with the bearing left gland 214, and a right framework oil seal 206 is arranged at the position where the pump shaft 202 is in contact with the bearing right gland 204 to prevent the leakage of lubricating oil; lubricating oil 3 is injected into the lower part of the inside of the bearing box 2 to lubricate the left bearing 213 and the right bearing 203, the lubricating oil is heated by the rotation of the bearings to generate gas, the gas in the left cavity 215 is discharged from the exhaust hole 208 through the left exhaust channel 217, the lubricating oil 3 is discharged from the left liquid drainage channel 218, the gas in the right cavity 205 is discharged from the exhaust hole 208 through the right exhaust channel 211, the lubricating oil 3 is discharged from the right liquid drainage channel 212, the gas is discharged from the exhaust channel and can be timely decompressed, no blind area exists when the lubricating oil is discharged from the liquid drainage channel, the oil levels in the left cavity and the right cavity are consistent with the oil level in the lubricating oil cavity, so that the leakage of the lubricating oil is reduced, the generated precipitate enters the precipitate collecting tank 210 under the action of gravity, and the lubricating oil is not polluted.
Claims (6)
1. The utility model provides a can prevent centrifugal pump bearing box of lubricating oil leakage, includes bearing box, pump shaft, left bearing, right bearing, the left gland of bearing, the right gland of bearing, left skeleton oil blanket, right skeleton oil blanket, oil and gas separator, oil drain control valve, left cavity, right cavity, lubricating oil cavity, exhaust hole, oil drain hole, its characterized in that: the bearing box body is characterized in that a left liquid drainage channel is formed in the lower end of a left cavity of the bearing box body, a right liquid drainage channel is formed in the lower end of a right cavity of the bearing box body, the left cavity is communicated with the lubricating oil cavity through the left liquid drainage channel, and the right cavity is communicated with the lubricating oil cavity through the right liquid drainage channel.
2. A centrifugal pump bearing housing capable of preventing leakage of lubricating oil according to claim 1, wherein: the bearing box body is characterized in that a left exhaust channel is formed in the upper end of a left cavity of the bearing box body, a right exhaust channel is formed in the upper end of a right cavity of the bearing box body, the left cavity is communicated with the lubricating oil cavity through the left exhaust channel, and the right cavity is communicated with the lubricating oil cavity through the right exhaust channel.
3. A centrifugal pump bearing housing capable of preventing leakage of lubricating oil according to claim 1 or 2, wherein: and a precipitate collecting groove is arranged at the lowest point of the lower end of the lubricating oil cavity, the upper end of the precipitate collecting groove is communicated with the lubricating oil cavity, and an oil drain hole is formed in the bottom of the groove.
4. A centrifugal pump bearing housing capable of preventing leakage of lubricating oil according to claim 3, wherein: the lower end surface of the lubricating oil cavity is provided with an inclined surface which inclines downwards towards the direction of the sediment collecting groove.
5. A centrifugal pump bearing housing capable of preventing leakage of lubricating oil according to claim 1, 2 or 4, wherein: the oil-gas separator is arranged at the highest point of the upper end of the lubricating oil cavity.
6. A centrifugal pump bearing housing capable of preventing leakage of lubricating oil according to claim 5, wherein: the upper end surface of the lubricating oil cavity is provided with an inclined surface which inclines upwards towards the direction of the oil-gas separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121100565.9U CN214945207U (en) | 2021-05-21 | 2021-05-21 | Centrifugal pump bearing box capable of preventing lubricating oil from leaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121100565.9U CN214945207U (en) | 2021-05-21 | 2021-05-21 | Centrifugal pump bearing box capable of preventing lubricating oil from leaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945207U true CN214945207U (en) | 2021-11-30 |
Family
ID=79058874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121100565.9U Expired - Fee Related CN214945207U (en) | 2021-05-21 | 2021-05-21 | Centrifugal pump bearing box capable of preventing lubricating oil from leaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214945207U (en) |
-
2021
- 2021-05-21 CN CN202121100565.9U patent/CN214945207U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |