CN203822629U - Roots vacuum pump with cooling device - Google Patents
Roots vacuum pump with cooling device Download PDFInfo
- Publication number
- CN203822629U CN203822629U CN201420087894.8U CN201420087894U CN203822629U CN 203822629 U CN203822629 U CN 203822629U CN 201420087894 U CN201420087894 U CN 201420087894U CN 203822629 U CN203822629 U CN 203822629U
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- CN
- China
- Prior art keywords
- pump
- rotor
- cooling unit
- cooling
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of Roots vacuum pumps and particularly relates to a Roots vacuum pump with a cooling device. The Roots vacuum pump comprises a pump body with a pump cavity and the cooling device, wherein two rotors are arranged left and right in the pump cavity; each rotor is provided with at least 3 blades; an air inlet hole is formed in the upper end of the pump body, and an air outlet hole is formed in the lower end of the pump body; the cooling device comprises at least one cooling air channel, and the air outlet of one of cooling air channels is formed in the left side of the pump cavity; when one blade of the rotor at the left side is at the top part and props against the inner wall of the pump cavity, the air outlet is communicated with the space between other two blades of the rotor and below the rotor at the left side. According to the Roots vacuum pump with the cooling device, the rotors can be cooled so as to prevent the rotors from deformation due to overheat; meanwhile, when cold air enters the pump cavity, the pumping speed of the vacuum pump is impacted.
Description
Technical field
The utility model relates to Roots pump technical field, relates in particular to a kind of Roots pump with cooling unit.
Background technique
Along with industrial expansion, people are more and more higher to the requirement of industrial products; In order to improve precision and the purity of product, people start to adopt vacuum technique; As chemical industry, medicine, packaging etc.; In industrial production, the requirement of degree of vacuum is not high especially, therefore generally all adopts oil-sealed rotary pump can reach requirement; In oil-sealed rotary pump, in order to improve the degree of vacuum vacuumizing, people generally adopt Roots pump and the combination of other mechanical pumps; Roots pump in use, without oil sealing, can play the effect of avoiding pollution; But because Roots pump is when the continuous firing, gas produces heat when compressed, make temperature of rotor continue to rise, and then deformation occurs, thereby reduced the sealing between rotor and pump chamber wall, affect the effect vacuumizing.
Model utility content
The purpose of this utility model is to solve the deficiencies in the prior art, and a kind of Roots pump with cooling unit is provided, and can effectively reduce the temperature of rotor; Avoid rotor deformation.
For achieving the above object, the technical solution adopted in the utility model is:
With a Roots pump for cooling unit, comprise the pump housing with pump chamber, in pump chamber, be provided with the rotor of two, rotor is left and right and arranges, and described rotor is provided with at least 3 blades; The upper end of the described pump housing is provided with inlet hole, and the lower end of the pump housing is provided with air outlet hole; Also comprise cooling unit, described cooling unit comprises at least one cooled gas path, and the air outlet of one of them cooled gas path is arranged at the left side of pump chamber; When a blade of the rotor in left side is positioned at top the inwall butt with pump chamber, the below of the rotor in air outlet and the left side wherein space between two blades communicates.
Further, described cooling unit also comprises the gas space being arranged in the pump housing, is provided with cooling device in the gas space, and the suction port of described cooled gas path communicates with the gas space.
Further, described cooling device comprises cooling pipe, in described cooling pipe, is filled with cooling medium.
Further, the described gas space is provided with temperature transducer, and described cooled gas path is provided with control valve, and temperature transducer is connected with control valve signal; The switch of temperature transducer control control valve.
Further, cooling unit is provided with two cooled gas path, and the air outlet of another cooled gas path is arranged at the right side of pump chamber.
Further, described rotor is provided with 3 blades.
The beneficial effect that the utility model is obtained is: the utility model can carry out cooling processing to rotor, prevents its overheated generation deformation; Cold air, in the time entering pump chamber, affects the pumping speed of vacuum pump simultaneously.
Brief description of the drawings
Fig. 1 is the utility model easy structure schematic diagram.
Reference character is:
1---the pump housing 2---pump chamber 3---inlet hole
4---air outlet 5---suction port 6---air outlet holes
7---the gas space 8---cooling unit 9---cooled gas path
10---rotor 11---blade.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further to book.
Embodiment: referring to Fig. 1.
With a Roots pump for cooling unit, comprise the pump housing 1 with pump chamber 2, in pump chamber 2, be provided with the rotor 10 of two, rotor 10 is left and right and arranges, and described rotor 10 is provided with at least 3 blades 11; The upper end of the described pump housing 1 is provided with inlet hole 3, and the lower end of the pump housing 1 is provided with air outlet hole 6; Also comprise cooling unit 8, described cooling unit 8 comprises at least one cooled gas path 9, and the air outlet 4 of one of them cooled gas path 9 is arranged at the left side of pump chamber 2; When a blade 11 of the rotor 10 in left side is positioned at top the inwall butt with pump chamber 2, the below of the rotor 10 in air outlet 4 and the left side wherein space between two blades 11 communicates.
When the utility model work, rotor 10 when rotated, is constantly arranged from inlet hole 3 gas to air outlet hole 6; When row, by the spatial variations forming between rotor 10 and pump chamber 2 walls, gas is discharged; When air-breathing, two blades 11 of one of them rotor 10 are all exposed to inlet hole 3, when this rotor 10 rotates, between two blades 11, form breathing space, and along with the rotation of rotor 10, breathing space is first closed; When breathing space rotates to while communicating with air outlet 4, cooled gas path 9 is just to breathing space discharge cool air, in order to reduce the temperature of rotor 10; Then cool air is also along with breathing space rotation, until breathing space communicates with air outlet hole, cool air is also discharged from air outlet hole.The suction port 5 of cooled gas path 9 of the present utility model can be arranged on outside the pump housing 1, by being connected with Cryogenic air.Arrow in accompanying drawing represents gas flow.
Further, described cooling unit 8 also comprises the gas space 7 being arranged in the pump housing 1, in the gas space 7, is provided with cooling device, and the suction port 5 of described cooled gas path 9 communicates with the gas space 7.
The gas space 7 communicates with extraneous, air outlet hole 6; Roots pump, in the time of work, is constantly outwards arranged gas through the gas space 7, and the gas pressure intensity of the gas space 7 inside, in the middle and later periods vacuumizing, should be greater than the gas pressure intensity in compression volume; Once therefore compression volume is communicated with cooled gas path 9, cooled gas can turn back to compression volume, carries out cooling to rotor 10.Because the gas space 7 is to receive compressed-air actuated discharge, and compressed air temperature is generally higher, therefore needs to arrange cooling device, and it is carried out to cooling processing.
Further, described cooling device comprises cooling pipe, in described cooling pipe, is filled with cooling medium.
Cooling device is set to cooling pipe, and structure is comparatively simple, and cooling medium can be chosen as cooling water, cooling wet goods; Cooling water is the most common, and cheap; Easy to use.Certainly cooling device, also can adopt other cooling components and parts.
Further, the described gas space 7 is provided with temperature transducer, and described cooled gas path 9 is provided with control valve, and temperature transducer is connected with control valve signal; The switch (not shown in FIG.) of temperature transducer control control valve.
In the time that temperature sensor senses is higher to the pressurized gas temperature of discharging, control valve is opened, and starts rotor 10 to carry out cooling processing.In the time that temperature is lower, control valve is closed.Can reasonably control the break-make of cooled gas path 9; Avoid cooled gas to reflux and bring too much load to rotor 10; Also the temperature that can monitor rotor 10, it is overheated to prevent simultaneously.Temperature transducer and control valve can be integrated into a temperature valve, and temperature induction part is divided into temperature driver, and switch sections is control valve.
Further, cooling unit 8 is provided with two cooled gas path 9, and the air outlet 4 of another cooled gas path 9 is arranged at the right side of pump chamber 2.
Because Roots pump is in when work, be by the external exhaust of moving of two rotors 10 simultaneously, therefore need two rotors 10 to carry out cooling processing, two cooled gas path 9 are set and are provided with and help overall cooling.
Further, described rotor 10 is provided with 3 blades 11.
The rotor 10 of 3 blade 11 structures, simple in structure, cost is low; And can realize cooling.
Below be only the application's preferred embodiment, equivalent technical solutions on this basis still falls into application protection domain.
Claims (6)
1. the Roots pump with cooling unit, comprises the pump housing with pump chamber, is provided with the rotor of two in pump chamber, and rotor is left and right and arranges, and described rotor is provided with at least 3 blades; The upper end of the described pump housing is provided with inlet hole, and the lower end of the pump housing is provided with air outlet hole; It is characterized in that: also comprise cooling unit, described cooling unit comprises at least one cooled gas path, the air outlet of one of them cooled gas path is arranged at the left side of pump chamber; When a blade of the rotor in left side is positioned at top the inwall butt with pump chamber, the below of the rotor in air outlet and the left side wherein space between two blades communicates.
2. a kind of Roots pump with cooling unit according to claim 1; It is characterized in that: described cooling unit also comprises the gas space being arranged in the pump housing, in the gas space, be provided with cooling device, the suction port of described cooled gas path communicates with the gas space.
3. a kind of Roots pump with cooling unit according to claim 2; It is characterized in that, described cooling device comprises cooling pipe, in described cooling pipe, is filled with cooling medium.
4. a kind of Roots pump with cooling unit according to claim 3; It is characterized in that, the described gas space is provided with temperature transducer, and described cooled gas path is provided with control valve, and temperature transducer is connected with control valve signal; The switch of temperature transducer control control valve.
5. a kind of Roots pump with cooling unit according to claim 1; It is characterized in that, cooling unit is provided with two cooled gas path, and the air outlet of another cooled gas path is arranged at the right side of pump chamber.
6. according to the arbitrary described a kind of Roots pump with cooling unit of claim 1 to 5; It is characterized in that, described rotor is provided with 3 blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087894.8U CN203822629U (en) | 2014-02-28 | 2014-02-28 | Roots vacuum pump with cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087894.8U CN203822629U (en) | 2014-02-28 | 2014-02-28 | Roots vacuum pump with cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822629U true CN203822629U (en) | 2014-09-10 |
Family
ID=51478138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087894.8U Expired - Fee Related CN203822629U (en) | 2014-02-28 | 2014-02-28 | Roots vacuum pump with cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649993A (en) * | 2015-06-18 | 2016-06-08 | 上海伊莱茨真空技术有限公司 | Double-clip type vacuum jacket flange plate |
| CN107120287A (en) * | 2017-03-23 | 2017-09-01 | 珠海格力电器股份有限公司 | Compressor and its control method |
-
2014
- 2014-02-28 CN CN201420087894.8U patent/CN203822629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649993A (en) * | 2015-06-18 | 2016-06-08 | 上海伊莱茨真空技术有限公司 | Double-clip type vacuum jacket flange plate |
| CN107120287A (en) * | 2017-03-23 | 2017-09-01 | 珠海格力电器股份有限公司 | Compressor and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20190228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |