CN204402923U - A kind of low noise liquid-ring vacuum pump - Google Patents
A kind of low noise liquid-ring vacuum pump Download PDFInfo
- Publication number
- CN204402923U CN204402923U CN201420857157.1U CN201420857157U CN204402923U CN 204402923 U CN204402923 U CN 204402923U CN 201420857157 U CN201420857157 U CN 201420857157U CN 204402923 U CN204402923 U CN 204402923U
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- motor
- motor shaft
- rear bearing
- pump housing
- impeller
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Abstract
The utility model relates to a kind of low noise liquid-ring vacuum pump, comprise the pump housing and motor that adopt straight mouth to connect, motor stator to be arranged in motor cabinet and to be clamped by rear bearing block, motor cabinet and rear bearing block are separately installed with fore bearing and rear bearing, motor shaft is through fore bearing and rear bearing and by its supporting, rotor to be arranged between fore bearing and rear bearing and with motor shaft integrated setting, in pump body cavity, set impeller is fixedly connected with motor shaft by screw, the rotational axis of impeller and the eccentric axis of pump body cavity are arranged, the disk of band sealing gasket is provided with between impeller and pump cover, baffle ring is provided with between the pump housing and motor front end cover, the endoporus of baffle ring and motor shaft adopt interference fit, very close to each other between the two.Structure of the present utility model and assembly technology simple, easy to use, can effectively control liquid-ring vacuum pump in working order under noise, there is higher application and popularization value.
Description
Technical field
The utility model belongs to content and belongs to fluid machinery technical field, relates to a kind of low noise liquid-ring vacuum pump for vacuumizing.
Background technique
Liquid-ring vacuum pump is a kind of fluid machinery being widely used in oil, chemical industry, food, electric power medicine and the industries such as papermaking, have stable working reliable, simple to operate, easy to maintenance, little close to gas temperature change in isothermal compression process, pump drainage process, the advantages such as inflammable, explosion hazard gases can be processed.Traditional liquid-ring vacuum pump is primarily of housing and eccentric be arranged on impeller in housing and distribution switchboard composition, after vane rotary reaches certain rotating speed, under the influence of centrifugal force working liquid body is thrown away, form the pendular ring that is attached to shell inner surface thus, a meniscate space is formed between impeller surface and pendular ring, it by impeller blade be separated into some volumes not wait cell, the volume of each cell periodically expands with the rotation of active wheel and reduces, thus the process completing air-breathing and calm the anger.Current known liquefaction vacuum pump usually adopts mechanical seal between the pump housing and motor, motor bearings generally all adopts deep groove ball bearing, be limited to what the subject of knowledge and the object of knowledge limit, the very large problem that existing liquefaction vacuum pump exists in practical application or manufacture assembly process is exactly often produce larger noise, and impact normally uses.And want control noise, usually will strict controlling component performance and manufacture assembly quality, thus add the liquefaction manufacture difficulty of vacuum pump and manufacture cost to a certain extent.
Model utility content
The purpose of this utility model is to solve prior art Problems existing, provides a kind of structure and assembly technology is simple, using effect is good low noise liquid-ring vacuum pump.
For achieving the above object and adopt technical solution as described below.
A kind of low noise liquid-ring vacuum pump, comprise the pump housing and motor that adopt straight mouth to connect, wherein, motor stator to be arranged in motor cabinet and to be clamped by rear bearing block, motor cabinet and rear bearing block are separately installed with fore bearing and rear bearing, motor shaft is through fore bearing and rear bearing and by its supporting, the rotor of fore bearing and rear bearing is locked by locking nut and motor shaft respectively, rotor to be arranged between fore bearing and rear bearing and with motor shaft integrated setting, be respectively equipped with motor front end cover and back end cover for motor at the front/rear end place of motor cabinet; In pump body cavity, set impeller is fixedly connected with motor shaft by screw, the rotational axis of impeller and the eccentric axis of pump body cavity are arranged, the disk of band sealing gasket is provided with between impeller and pump cover, baffle ring is provided with between the pump housing and motor front end cover, the endoporus of baffle ring and motor shaft adopt interference fit, very close to each other between the two.
Technical solution of the present utility model is also: be provided with gap adjustment ring in the axial connecting part of impeller and motor shaft, for adjusting the end clearance size between impeller and disk.
Technical solution of the present utility model is also: the upper end of the pump housing is provided with the inlet opening for adding working liquid body, the diametric clearance of 40 ~ 80 μm is joined between the front end endoporus of the pump housing and motor shaft, the diametric clearance of 40 ~ 80 μm is joined between the endoporus of motor front end cover and motor shaft, Leak hole is provided with, to ensure that the liquid between pump housing pump cover can not enter motor internal by motor front end cover in pump housing lower end.
Technical solution of the present utility model is also: fore bearing adopts two angular contact bearings, and rear bearing adopts an angular contact bearing.
Technical solution of the present utility model is also: described baffle ring is fluorine rubber material component.
Compared with prior art, the advantage that the utility model has is: (one), the utility model have employed contactless sealing mode between pump housing chamber and motor cavity, the diametric clearance of 40 ~ 80 μm is joined to increase flow resistance between the endoporus and motor shaft of the pump housing, the diametric clearance of 40 ~ 80 μm is joined to increase flow resistance between the endoporus and motor shaft of motor front end cover, in Seal cage simultaneously between the pump housing and motor front end cover, baffle ring is set, interference fit is adopted between the endoporus of baffle ring and motor shaft, the lower end of the Seal cage between this external pump housing and motor front end cover is also provided with Leak hole, the a small amount of liquid penetrated in Seal cage from pump housing chamber can not be permeated to motor cavity further by the Leak hole discharge pump housing after by baffle loop resistance gear, the mechanical seal structure in original liquid-ring vacuum pump is instead of by above-mentioned technical solution, thus reduce the sealing difficulty of product, achieve mechanical contact sealing, the noise introduced because of Mechanical Contact sealing under controlling working state, (2), the utility model have employed angular contact bearing in motor, relatively original technology adopts deep groove ball bearing usually, improve the axial carrying capacity of motor, when being delivered on motor shaft being subject to pendular ring active force because of impeller, the stability that motor shaft operates can be ensured, effectively control the noise of motor rotation.
In sum, the utility model reduces the assembling difficulty of liquid-ring vacuum pump by above technical solution, control liquid-ring vacuum pump in working order under noise, especially have in the middle of necessarily required application at medical disinfection cabinet etc. to liquid-ring vacuum pump noise, there is higher promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of specific embodiment of the utility model.
Fig. 2 is that A-A after removing pump cover in Fig. 1 structure is to sectional view.
Fig. 3 is the B-B direction view of integrated disc portions in the utility model.
In figure, the title of each number designation is respectively: 1-pump cover, 2-sealing gasket, 3-disk, 3-1-suction port, 3-2-exhaust port, 4-pad, 5-screw, 6-spacer, 7-impeller, the 8-pump housing, 8-1-inlet opening, 8-2-Leak hole, 9-baffle ring, 10-locking nut, 11-fore bearing, 12-motor cabinet, 13-rotor, 14-motor stator, 15-rear bearing block, 16-back end cover for motor, 17-rear bearing, 18-locking nut, 19-motor shaft, 20-motor front end cover.
Embodiment
Below in conjunction with accompanying drawing, project organization of the present utility model and working principle are described further, but practical structures of the present utility model is not limited in following embodiment.
See accompanying drawing, low noise liquid-ring vacuum pump described in the utility model is made up of components such as motor cabinet 12, rotor 13, motor stator 14, fore bearing 11, rear bearing 17, the pump housing 8, pump cover 1, impeller clearance adjustment ring 7, disk 3, sealing gaskets 2.Motor stator 14 is arranged on motor cabinet 12 inside and is clamped by rear bearing block 15, fore bearing 11 and rear bearing 17 are arranged on motor cabinet 12 and rear bearing block 15 respectively, motor shaft 19 is through fore bearing 11 and rear bearing 17 and by its supporting, the rotor of fore bearing 11 and rear bearing 17 is locked by locking nut 10,18 and motor shaft 19 respectively, and rotor 13 to be arranged between forward and backward bearing 11,17 and to adopt integrated design with motor shaft 19.In concrete enforcement structure, fore bearing 11 adopts two angular contact bearings, and rear bearing 17 adopts an angular contact bearing.Motor front end cover 20 and back end cover for motor 16 are separately positioned on the front/rear end place of motor cabinet 12.The pump housing 8 and motor cabinet 12 adopt straight mouth to be connected, in the pump housing 8 front end, pump cover 1 is set, the upper end of the pump housing 8 arranges inlet opening 8-1, for adding working liquid body, the diametric clearance of 40 ~ 80 μm is joined between the endoporus of the pump housing 8 and motor shaft 19, join the diametric clearance of 40 ~ 80 μm between the endoporus of motor front end cover 20 and motor shaft 19, and Leak hole 8-2 is set in the pump housing 8 lower end, to ensure that the liquid between the pump housing 8 pump cover 1 can not enter motor internal by motor front end cover 20.Impeller 7 is arranged in the internal cavity that the pump housing 8 and pump cover 1 form, and is fixedly connected with by screw 5 with motor shaft 19; The axis of the internal cavity that the rotational axis of impeller 7 and the pump housing 8 pump cover 1 are formed arranges certain throw of eccentric.Disk 3 is set between impeller 7 and pump cover 1, and nitrile rubber gasket 2 is set between disk 3 and pump cover 1.Gap adjustment ring 6 being set at impeller 7 and the axial connecting part of motor shaft 19, for adjusting the end clearance size between impeller 7 and disk 3, between screw 5 and impeller 7, being provided with pad 4.Between the pump housing 8 and motor front end cover 20, be provided with fluorine rubber material baffle ring 9, endoporus and the motor shaft 19 of baffle ring 9 adopt interference fit, very close to each other between the two.
In this low noise liquid-ring vacuum pump, the structure of disk 3 as shown in Figure 3, disk 3 arranges suction port 3-1 and exhaust port 3-2, after working gas passes through pump cover 1 and sealing gasket 2 in the cavity that suction port 3-1 intake impeller 7 and pendular ring are formed, after with vane rotary, again by exhaust port 3-2, and after sealing gasket 2 and pump cover 1 excavationg pump external body.
The utility model achieves low noise design in the following manner: between pump housing chamber and motor cavity, have employed contactless sealing mode, the diametric clearance of 40 ~ 80 μm is joined to increase flow resistance between the endoporus and motor shaft of the pump housing, the diametric clearance of 40 ~ 80 μm is joined to increase flow resistance between the endoporus and motor shaft of motor front end cover, baffle ring is set in the Seal cage between the pump housing and motor front end cover, interference fit is adopted between the endoporus of baffle ring and motor shaft, the lower end of the Seal cage between the pump housing and motor front end cover is also provided with Leak hole, the liquid penetrated in Seal cage from pump housing chamber can not be permeated to motor cavity further by the Leak hole discharge pump housing after by baffle loop resistance gear, mechanical contact sealing is achieved by above-mentioned solution, the noise introduced because of Mechanical Contact sealing under controlling working state, meanwhile, in motor, have employed angular contact bearing, which thereby enhance the axial carrying capacity of motor, when being delivered on motor shaft being subject to pendular ring active force because of impeller, ensure that the stability that motor shaft operates, thus controlling the noise of motor rotation.
Claims (5)
1. a low noise liquid-ring vacuum pump, comprises the pump housing (8) and motor that adopt straight mouth to connect, it is characterized in that:
Motor stator (14) is arranged in motor cabinet (12) also by rear bearing block (15) clamping, motor cabinet (12) and rear bearing block (15) are separately installed with fore bearing (11) and rear bearing (17), motor shaft (19) is through fore bearing (11) and rear bearing (17) and by its supporting, the rotor of fore bearing (11) and rear bearing (17) is respectively by locking nut (10, 18) lock with motor shaft (19), rotor (13) to be arranged between fore bearing (11) and rear bearing (17) and with motor shaft (19) integrated setting, motor front end cover (20) and back end cover for motor (16) is respectively equipped with at the front/rear end place of motor cabinet (12),
In the pump housing (8) internal cavity, set impeller (7) is fixedly connected with motor shaft (19) by screw (5), the rotational axis of impeller (7) and the eccentric axis of the pump housing (8) internal cavity are arranged, the disk (3) being with sealing gasket (2) is provided with between impeller (7) and pump cover (1), baffle ring (9) is provided with between the pump housing (8) and motor front end cover (20), endoporus and the motor shaft (19) of baffle ring (9) adopt interference fit, very close to each other between the two.
2. low noise liquid-ring vacuum pump according to claim 1, is characterized in that: be provided with gap adjustment ring (6) at impeller (7) and the axial connecting part of motor shaft (19).
3. a kind of low noise liquid-ring vacuum pump according to claim 1, it is characterized in that: the upper end of the pump housing (8) arranges inlet opening (8-1), the diametric clearance of 40 ~ 80 μm is joined between the front end endoporus of the pump housing (8) and motor shaft (19), join the diametric clearance of 40 ~ 80 μm between the endoporus of motor front end cover (20) and motor shaft (19), be provided with Leak hole (8-2) in the pump housing (8) lower end.
4. a kind of low noise liquid-ring vacuum pump according to claim 1, is characterized in that: fore bearing (11) adopts two angular contact bearings, and rear bearing (17) adopts an angular contact bearing.
5. a kind of low noise liquid-ring vacuum pump according to claim 1, is characterized in that: baffle ring (9) is fluorine rubber material component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857157.1U CN204402923U (en) | 2014-12-29 | 2014-12-29 | A kind of low noise liquid-ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857157.1U CN204402923U (en) | 2014-12-29 | 2014-12-29 | A kind of low noise liquid-ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402923U true CN204402923U (en) | 2015-06-17 |
Family
ID=53426789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420857157.1U Expired - Fee Related CN204402923U (en) | 2014-12-29 | 2014-12-29 | A kind of low noise liquid-ring vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402923U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464979A (en) * | 2015-12-28 | 2016-04-06 | 昂伯（上海）真空设备有限公司 | Single-stage water ring type vacuum pump |
| CN106837629A (en) * | 2017-03-20 | 2017-06-13 | 瑞安市科达汽车配件有限公司 | External multifunctional cold start-up electric fuel punp |
| CN107178510A (en) * | 2017-07-19 | 2017-09-19 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN109695586A (en) * | 2019-02-20 | 2019-04-30 | 苏州众志新环冷却设备有限公司 | Novel seal fan for offshore wind farm |
-
2014
- 2014-12-29 CN CN201420857157.1U patent/CN204402923U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464979A (en) * | 2015-12-28 | 2016-04-06 | 昂伯（上海）真空设备有限公司 | Single-stage water ring type vacuum pump |
| CN106837629A (en) * | 2017-03-20 | 2017-06-13 | 瑞安市科达汽车配件有限公司 | External multifunctional cold start-up electric fuel punp |
| CN107178510A (en) * | 2017-07-19 | 2017-09-19 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN109695586A (en) * | 2019-02-20 | 2019-04-30 | 苏州众志新环冷却设备有限公司 | Novel seal fan for offshore wind farm |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710119, Shaanxi, Xi'an hi tech Zone, 39 pioneering Road, vice building A1, room 103 Patentee after: XI'AN HANGCHEN ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Address before: 710119, Shaanxi, Xi'an hi tech Zone, 39 pioneering Road, vice building A1, room 103 Patentee before: Xi'an morning air Mechanical & Electrical Technology Co.,Ltd. Address after: 710119, Shaanxi, Xi'an hi tech Zone, 39 pioneering Road, vice building A1, room 103 Patentee after: Xi'an morning air Mechanical & Electrical Technology Co.,Ltd. Address before: 710119, Shaanxi, Xi'an hi tech Zone, 39 pioneering Road, vice building A1, room 103 Patentee before: XI AN HANGZHI ELECTROMECHANICAL EQUIPMENT SCIENCE & TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180226 Address after: 710065 Shaanxi province Xi'an city road high tech Zone No. 20 Tang Lijun Building No. 8 Room 1502 tomorrow Patentee after: Shaanxi Jin Zhan Electric Power Equipment Co.,Ltd. Address before: 710119, Shaanxi, Xi'an hi tech Zone, 39 pioneering Road, vice building A1, room 103 Patentee before: XI'AN HANGCHEN ELECTROMECHANICAL TECHNOLOGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20181229 |