CN210387882U - Vacuum air pumping system - Google Patents
Vacuum air pumping system Download PDFInfo
- Publication number
- CN210387882U CN210387882U CN201921074561.0U CN201921074561U CN210387882U CN 210387882 U CN210387882 U CN 210387882U CN 201921074561 U CN201921074561 U CN 201921074561U CN 210387882 U CN210387882 U CN 210387882U
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- Prior art keywords
- vacuum
- pump
- rough
- high vacuum
- port
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- 238000005086 pumping Methods 0.000 title claims abstract description 30
- 238000005219 brazing Methods 0.000 claims abstract description 32
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Abstract
The utility model discloses a vacuum pumping system, including vacuum brazing stove, rough vacuum pump package, high vacuum pump and maintenance pump, rough vacuum pump package is connected with the vacuum brazing stove respectively with high vacuum pump, maintains that the pump is connected high vacuum pump and rough vacuum pump package respectively. The utility model discloses a vacuum pumping system carries out rough evacuation through rough vacuum pump package earlier at the during operation, then maintains the vacuum in the system in certain level through the maintenance pump, and oil gas and water gas in the extraction system pipeline simultaneously acquire the high vacuum in the system through the diffusion pump at last. The utility model discloses the evacuation is efficient, can handle system's interior oil gas and water gas simultaneously, has reduced the cleaning frequency of vacuum brazing stove, has promoted production efficiency.
Description
Technical Field
The utility model relates to a vacuum pumping system for vacuum brazing field.
Background
Vacuum brazing is a connecting method of heating materials to be connected to a proper temperature under a certain vacuum degree, melting filling materials, filling liquid brazing filler metal into gaps between solid base metals by utilizing capillary action, enabling the base metals and the brazing filler metal to interact, and then cooling and solidifying to form metallurgical bonding. The degree of vacuum is a key factor for success of vacuum brazing.
Because the oilless vacuum system is expensive, the vacuum obtaining equipment adopted by the existing vacuum brazing furnace is generally an oiled vacuum system and consists of an oil diffusion pump, a roots pump and a mechanical pump three-stage vacuum pump. Wherein, oil diffusion pump and mechanical pump all can return oil to the vacuum brazing stove in, cause the influence to the furnace body of vacuum brazing stove. The existing vacuum brazing furnace generally needs to be cleaned regularly or irregularly, so that the production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a vacuum pumping system which can realize the vacuum pumping of a vacuum brazing furnace.
One technical scheme for achieving the above purpose is as follows: a vacuum pumping system is used for vacuumizing a vacuum brazing furnace and comprises a vacuum brazing furnace, a rough vacuum pump set, a high vacuum pump and a maintaining pump;
an air suction port is formed in the vacuum brazing furnace and is externally connected with an air suction channel, and an air suction port is formed in the port of the air suction channel;
the rough vacuum pump set is connected with the air pumping port through a pipeline and comprises a first mechanical pump and a second mechanical pump which are sequentially connected; the high vacuum pump is arranged on the air exhaust port and is communicated with the air exhaust port; the maintaining pump is respectively connected to a pipeline for communicating the rough vacuum pump set and the air suction port through a three-way pipeline and is connected to the high vacuum pump.
Further, the first mechanical pump is a roots pump.
Further, the high vacuum pump is a diffusion pump.
Furthermore, a high vacuum gauge is arranged on a pipeline for communicating the rough vacuum pump set with the air exhaust port, the high vacuum gauge is arranged at the connecting point of the three-phase pipeline, the high vacuum gauge is arranged on a pipeline at the connecting point of the maintaining pump leading to the three-phase pipeline, and the high vacuum gauge is arranged on the air exhaust passage.
Furthermore, the air exhaust port is provided with a main control valve.
Further, an oil gas filtering device is arranged at the air exhaust port.
The utility model discloses a vacuum pumping system, including vacuum brazing stove, rough vacuum pump package, high vacuum pump and maintenance pump, rough vacuum pump package is connected with the vacuum brazing stove respectively with high vacuum pump, maintains that the pump is connected high vacuum pump and rough vacuum pump package respectively. The utility model discloses a vacuum pumping system carries out rough evacuation through rough vacuum pump package earlier at the during operation, then maintains the vacuum in the system in certain level through the maintenance pump, and oil gas and water gas in the extraction system pipeline simultaneously acquire the high vacuum in the system through the diffusion pump at last. The utility model discloses the evacuation is efficient, can handle system's interior oil gas and water gas simultaneously, has reduced the cleaning frequency of vacuum brazing stove, has promoted production efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum pumping system of the present invention.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific embodiments with reference to the accompanying drawings:
referring to fig. 1, a vacuum pumping system for evacuating a vacuum brazing furnace includes a vacuum brazing furnace 1, a rough vacuum pump set 2, a high vacuum pump 3, and a maintenance pump 4.
The vacuum brazing furnace is provided with an air exhaust port, the air exhaust port is externally connected with an air exhaust channel 11, an air exhaust port 12 is arranged at the port of the air exhaust channel, and the air exhaust port 12 is provided with a main control valve 13. The air pumping channel 11 is used for lengthening the air channel distance from each pump assembly to the vacuum brazing furnace, so that oil gas and water vapor can be condensed into liquid drops in the air pumping channel and cannot enter the vacuum brazing furnace 1. An oil gas filtering device is arranged at the air exhaust port 12 to further adsorb and filter oil gas and water gas.
The rough vacuum pump set 2 is connected with the air exhaust port 12 through a pipeline. The rough vacuum pump group 2 comprises a first mechanical pump 21 and a second mechanical pump 22 which are connected in sequence, wherein the first mechanical pump 21 is a roots pump. The high vacuum pump 3 is disposed on the pumping port 12 and is communicated with the pumping port 12, and the high vacuum pump 3 is a diffusion pump. The maintaining pump 4 is respectively connected with the pipeline for communicating the rough vacuum pump set and the air suction port and is connected with the high vacuum pump 3 through a three-way pipeline.
In order to monitor the air pressure at each position in the system in real time, a plurality of air pressure monitoring points are arranged in the system pipeline, and each air pressure monitoring point is provided with a high vacuum gauge 5. The specific positions of the high vacuum gauge 5 are as follows: high vacuum gauges 5 are arranged on pipelines for communicating the rough vacuum pump set 2 with the air suction port 12, connecting points of the three-phase pipelines, connecting points of the maintenance pump 4 to the three-phase pipelines and air suction channels.
The utility model discloses a when vacuum pumping system work began, lobe pump 42 and mechanical pump 43 were opened in proper order, carried out rough evacuation in to the system. After each high vacuum gauge 45 of vacuum pipeline atmospheric pressure monitoring point shows that pipeline internal gas pressure reaches certain vacuum, open maintenance pump 4 and continue to carry out the evacuation to maintain certain vacuum with the vacuum pipeline, then open main control valve 13, lobe pump 42 and mechanical pump 43 carry out rough vacuum pumping to the cavity of vacuum brazing furnace this moment, make and reach rough vacuum level in the brazing furnace cavity. In the process, part of the water gas and oil gas is adsorbed and filtered through the oil gas filtering device of the air exhaust port 12, part of the water gas and oil gas is condensed in the air exhaust passage 11, and part of the water gas and oil gas is extracted and discharged through the maintaining pump. When the high vacuum gauge 45 in the air extraction passage 11 indicates that a certain rough vacuum degree is reached, the diffusion pump 41 is turned on to continuously vacuumize the vacuum brazing furnace cavity, so as to ensure that the required vacuum degree in the vacuum brazing furnace cavity is reached.
The utility model discloses the evacuation is efficient, can handle system's interior oil gas and water gas simultaneously, has reduced the cleaning frequency of vacuum brazing stove, has promoted production efficiency.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a vacuum pumping system, its effect is for carrying out the evacuation to vacuum brazing furnace, includes vacuum brazing furnace, rough vacuum pump package, high vacuum pump and maintenance pump, its characterized in that:
an air suction port is formed in the vacuum brazing furnace and is externally connected with an air suction channel, and an air suction port is formed in the port of the air suction channel;
the rough vacuum pump set is connected with the air pumping port through a pipeline and comprises a first mechanical pump and a second mechanical pump which are sequentially connected; the high vacuum pump is arranged on the air exhaust port and is communicated with the air exhaust port; the maintaining pump is respectively connected to a pipeline for communicating the rough vacuum pump set and the air suction port through a three-way pipeline and is connected to the high vacuum pump.
2. A vacuum pumping system as defined in claim 1, wherein the first mechanical pump is a roots pump.
3. A vacuum pumping system as defined in claim 1, wherein the high vacuum pump is a diffusion pump.
4. A vacuum pumping system as defined in claim 1, wherein a high vacuum gauge is provided on a pipe connecting the rough vacuum pump set and the pumping port, a high vacuum gauge is provided at a connecting point of the three-way pipe, a high vacuum gauge is provided on a pipe connecting the maintenance pump to the three-way pipe, and a high vacuum gauge is provided on the pumping channel.
5. A vacuum pumping system as defined in claim 1, wherein the pumping port is provided with a master control valve.
6. A vacuum pumping system as defined in claim 1, wherein an oil and gas filter is provided at the pumping port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921074561.0U CN210387882U (en) | 2019-07-10 | 2019-07-10 | Vacuum air pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921074561.0U CN210387882U (en) | 2019-07-10 | 2019-07-10 | Vacuum air pumping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210387882U true CN210387882U (en) | 2020-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921074561.0U Active CN210387882U (en) | 2019-07-10 | 2019-07-10 | Vacuum air pumping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210387882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412752A (en) * | 2022-03-28 | 2022-04-29 | 常州铭赛机器人科技股份有限公司 | Segmented vacuum working apparatus and method of using the same |
-
2019
- 2019-07-10 CN CN201921074561.0U patent/CN210387882U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412752A (en) * | 2022-03-28 | 2022-04-29 | 常州铭赛机器人科技股份有限公司 | Segmented vacuum working apparatus and method of using the same |
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