CN103398009A - Vacuum pump and air pumping adjustment system thereof - Google Patents
Vacuum pump and air pumping adjustment system thereof Download PDFInfo
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- CN103398009A CN103398009A CN2013102980531A CN201310298053A CN103398009A CN 103398009 A CN103398009 A CN 103398009A CN 2013102980531 A CN2013102980531 A CN 2013102980531A CN 201310298053 A CN201310298053 A CN 201310298053A CN 103398009 A CN103398009 A CN 103398009A
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- vacuum pump
- pipeline
- vacuum
- bleeding
- regulating system
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Abstract
The invention relates to a vacuum air pumping technology, and particularly relates to a vacuum pump and an air pumping adjustment system of the vacuum pump. The air pumping adjustment system comprises a pipeline and an adjusting device, wherein the two ends of the pipeline are respectively provided with a first connector connected with equipment to be vacuumized and a second connector connected with an air inlet of the vacuum pump, the pipeline is provided with a butterfly valve, and the adjusting device is used for adjusting the opening of the butterfly valve according to the vacuum degree of the pipeline. The air pumping adjustment system is mounted at the air inlet of the vacuum pump; the opening of the butterfly valve is controlled by the adjusting device, and the amount of air pumped into the vacuum pump can be controlled by the opening of the butterfly valve, so as to achieve balance between pumped air and the demand. Since the air pumping adjustment system is used for adjusting the vacuum degree, the vacuum pump can keep good stability during long-time running and the problem that the service life of the vacuum pump is too short can be avoided. Based on the characteristics and advantages, the air pumping adjustment system can be applied to such products as vacuum pumps.
Description
Technical field
The present invention relates to a kind of vacuum suction technical field, particularly the regulating system of bleeding of a kind of vacuum pump and vacuum pump.
Background technique
Screw vacuum pump is a kind of a pair of screw rod that utilizes, and in pump case, does the synchronous high-speed counterrotating and the air-extractor of the air-breathing and scavenging action that produces.Two screw rods is proofreaied and correct through fine dynamic balance, by bearings, is arranged in pump case, certain gap is arranged between screw rod and screw rod, therefore, during the screw vacuum pump work, two screw rods is each other without friction, smooth running, noise is low, can extract the gas occasion that contains a large amount of water vapors and a small amount of dust, limiting vacuum is higher, consumed power is lower, has the advantages such as energy-conservation, freedom from repairs.
But, in existing screw vacuum pump, lack degree of vacuum is regulated, cause its long playing poor stability, thereby make screw vacuum pump too short working life.
Summary of the invention
For the prior art deficiency, the present invention proposes the regulating system of bleeding of a kind of vacuum pump and vacuum pump, is intended to solve in existing screw vacuum pump, lacks degree of vacuum is regulated, cause its long playing poor stability, thereby make screw vacuum pump too short problem in working life.
The technological scheme that the present invention proposes is:
A kind of regulating system of bleeding of vacuum pump, comprise a pipeline, the two ends of described pipeline are respectively arranged with and treat the first joint that vaccum-pumping equipment is connected, the second joint that is connected with the suction port of vacuum pump, on described pipeline, be provided with butterfly valve, also comprise the controlling device of regulating described butterfly valve open degree according to the degree of vacuum on described pipeline.
Further technological scheme can also be, described controlling device comprises Air-Inlet Controller with left cavity and right cavity, according to described left cavity and poor diaphragm type cylinder and the adjustment (adjusting) lever that moves of described right chamber pressure, described diaphragm type cylinder is located in described Air-Inlet Controller, and the two ends of described adjustment (adjusting) lever are connected with described diaphragm type cylinder, described butterfly valve respectively.
Further technological scheme can also be, also comprise vacuum breaker, the first pipeline and second pipe, described right cavity is communicated with atmosphere, one end of described vacuum breaker is connected with described left cavity by the first pipeline, the other end of described vacuum breaker is communicated with atmosphere, on described the first pipeline, be provided with a minute mouth of pipe, the mouth of pipe was connected with described pipeline by described second pipe in described minute.
Further technological scheme can also be, on described vacuum breaker, also is provided with and controls the automatic opening device that described vacuum breaker is opened, and described automatic opening device is connected with described pipeline.
Further technological scheme can also be, also comprises filter, and described vacuum breaker is communicated with atmosphere by described filter.
Further technological scheme can also be, also comprises extension spring, and described diaphragm type cylinder is connected with described adjustment (adjusting) lever by described extension spring.
Further technological scheme can also be to be provided with throttle valve on described second pipe.
Further technological scheme can also be on described pipeline, also to be provided with breather check valve.
The present invention also proposes a kind of vacuum pump, comprise have suction port, the vacuum pump body of relief opening, the suction port of described vacuum pump body is connected with the regulating system of bleeding of above-mentioned a kind of vacuum pump.
Further technological scheme can also be that described vacuum pump body is the screw vacuum pump body.
According to above-mentioned technological scheme, beneficial effect of the present invention: increased the described regulating system of bleeding at the suction port place of vacuum pump, by described controlling device, control the open degree of described butterfly valve, the different open degree of described butterfly valve can be controlled the rate of air sucked in required that enters into vacuum pump, to reach the state of equilibrium of bleeding with demand, by the described adjusting of regulating system to degree of vacuum of bleeding, make vacuum pump also can keep good stability at long-play, thereby avoid the too short problem of service life of vacuum pump.
Because the present invention has above-mentioned characteristics and advantage, can be applied in the products such as vacuum pump for this reason.
The accompanying drawing explanation
Fig. 1 is the structural representation of the described regulating system of bleeding of application technical solution of the present invention.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the present invention proposes a kind of regulating system of bleeding of vacuum pump, comprise a pipeline 1, the two ends of pipeline 1 are respectively arranged with and treat the first joint 11 that vaccum-pumping equipment is connected, the second joint 12 that is connected with the suction port of vacuum pump, on pipeline 1, be provided with butterfly valve 2, also comprise the controlling device 3 according to degree of vacuum regulating butterfly valve 2 open degree on pipeline 1.
Wherein, at the suction port place of vacuum pump, increased the described regulating system of bleeding, by controlling device 3, control the open degree of butterfly valve 2, the different open degree of butterfly valve 2 can be controlled the rate of air sucked in required that enters into vacuum pump, to reach the state of equilibrium of bleeding with demand, by the described regulating system of bleeding, to the adjusting of degree of vacuum, make vacuum pump also can keep good stability at long-play, thereby avoid the too short problem of service life of vacuum pump.
Preferably, controlling device 3 comprises and has left cavity the Air-Inlet Controller 31 of (in the drawings mark) and right cavity (in the drawings mark), according to described left cavity and the poor diaphragm type cylinder that moves of described right chamber pressure (marking in the drawings) and adjustment (adjusting) lever 32, described diaphragm type cylinder is located in Air-Inlet Controller 31, and the two ends of adjustment (adjusting) lever 32 are connected with described diaphragm type cylinder, butterfly valve 2 respectively.Described diaphragm type cylinder comprises cylinder body, piston rod, diaphragm and membranous disc, when between described left cavity and described right cavity, having pressure difference, thereby make described diaphragm type cylinder moving drive adjustment (adjusting) lever 32 motions, adjustment (adjusting) lever 32 is controlled the open degree of butterfly valve 2, thereby controls the rate of air sucked in required that enters into vacuum pump.Particularly, the piston rod in described diaphragm type cylinder is connected with adjustment (adjusting) lever 32.
Further, also comprise vacuum breaker 4, the first pipeline 5 and second pipe 6, described right cavity is communicated with atmosphere, one end of vacuum breaker 4 is connected with described left cavity by the first pipeline 5, the other end of vacuum breaker 4 is communicated with atmosphere, on the first pipeline 5, be provided with a minute mouth of pipe (not marking in the drawings), the mouth of pipe was connected with pipeline 1 by second pipe 6 in described minute.particularly, the joint of second pipe 6 and pipeline 1 is between butterfly valve 2 and described the second joint 12, air in described left cavity can be extracted by vacuum pump through the first pipeline 5 and second pipe 6, thereby make to have pressure difference between described left cavity and described right cavity, in order to reach the pressure difference that needs, by opening and regulate vacuum breaker 4, allow atmosphere enter described left cavity by vacuum breaker 4, thereby adjust the pressure in described left cavity, allow between described left cavity and described right cavity and have the pressure difference that needs, and then, by adjustment (adjusting) lever 32, control the open degree of butterfly valve 2.
Preferably, on vacuum breaker 4, also be provided with the automatic opening device (not marking in the drawings) of controlling vacuum breaker 4 and opening, described automatic opening device is connected with pipeline 1.particularly, in described automatic opening device and pipeline 1, at butterfly valve 2, with the part between the first joint 11, be connected, described automatic opening device is controlled the unlatching of vacuum breaker 4 and is regulated vacuum breaker 4 and open size, on described automatic opening device, set required specified degree of vacuum, when the degree of vacuum of pipeline 1 during higher than described automatic opening device setting value, described automatic opening device orders about vacuum breaker 4 and opens, make atmosphere enter into the described left cavity of described Air-Inlet Controller 31, thereby change the pressure difference of left cavity described in described Air-Inlet Controller 31 and described right cavity, make the open degree of adjustment (adjusting) lever 32 action control butterfly valves 2.
Further, also comprise filter 7, vacuum breaker 4 is communicated with atmosphere by filter 7.Filter 7 stops the impurity in atmosphere, avoids the impurity in atmosphere to enter vacuum breaker 4, and the described regulating system of bleeding is caused to bad impact.
Particularly, also comprise extension spring 8, described diaphragm type cylinder is connected with adjustment (adjusting) lever 32 by extension spring 8.Two of extension spring 8 is connected with piston rod, adjustment (adjusting) lever 32 in described diaphragm type cylinder respectively.
Further, on second pipe 6, be provided with throttle valve 61.Regulating throttle valve 61 can make the gas flow in second pipe 6 stable.
Further, on pipeline 1, also be provided with breather check valve 9.Particularly, breather check valve 9 is between butterfly valve 2 and the first joint 11, and when vacuum pump was shut down, breather check valve 9 can stop atmosphere to enter and treat in vaccum-pumping equipment by pipeline 1.
In sum, the described regulating system of bleeding is rich in splendid degree of vacuum regulates and stabilization function, can realize automatic 0～100% air inlet adjustment; Can guarantee that fluctuations of vacuum, in ± 5mbar scope, can provide the vacuum of stablizing no pulse, its degree of vacuum and rate of air sucked in required can not be subjected to the impact of extraneous factor substantially, and property indices is reliable and stable.Three phases is arranged: starting, conventional operation, capacity regulating in the vacuum pump running; In three phases, can regulate and reach the state of equilibrium of bleeding with demand by the described regulating system of bleeding respectively.In the present embodiment, selecting a specified degree of vacuum is that the vacuum pump of 20in.Hg (508mm mercury column) describes:
1, starting period: after pressing starting button, this vacuum pump entry into service, the degree of vacuum that is in pipeline 1 between butterfly valve 2 and this vacuum pump is raised to 15in.Hg from 0 rapidly, rising along with degree of vacuum, butterfly valve 2 is opened gradually, when degree of vacuum was raised to 15in.Hg, butterfly valve 2 was all opened, and this vacuum pump starts running at full capacity.
2, the conventional operation stage: after the described regulating system degree of vacuum of bleeding surpasses 15in.Hg, butterfly valve 2 standard-sized sheets, this vacuum pump running at full capacity, under this state, vacuum breaker 4 cuts out always, and Air-Inlet Controller 31 also is failure to actuate.
3, the capacity regulating stage: if required rate of air sucked in required is lower than rating value, the described regulating system degree of vacuum of bleeding will constantly rise, when surpassing the 20in.Hg(508mm mercury column) after, vacuum breaker 4 will be opened gradually, air enters in Air-Inlet Controller 31, and butterfly valve 2 parts are closed, and allows rate of air sucked in required and client's demand be complementary, under the described regulating system self-regulation of bleeding, the described regulating system degree of vacuum of bleeding will remain on 20 to 23in.Hg(508 to 584mm mercury column) between.
As shown in Figure 1, the present invention also proposes a kind of vacuum pump, comprises and have suction port the vacuum pump body 100 of (in the drawings mark), relief opening 101, and the suction port of vacuum pump body 100 is connected with the regulating system of bleeding of above-mentioned a kind of vacuum pump.
Preferably, vacuum pump body 100 is the screw vacuum pump body.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the regulating system of bleeding of a vacuum pump, comprise a pipeline, the two ends of described pipeline are respectively arranged with and treat the first joint that vaccum-pumping equipment is connected, the second joint that is connected with the suction port of vacuum pump, it is characterized in that, on described pipeline, be provided with butterfly valve, also comprise the controlling device of regulating described butterfly valve open degree according to the degree of vacuum on described pipeline.
2. the regulating system of bleeding of a kind of vacuum pump according to claim 1, it is characterized in that, described controlling device comprises Air-Inlet Controller with left cavity and right cavity, according to described left cavity and poor diaphragm type cylinder and the adjustment (adjusting) lever that moves of described right chamber pressure, described diaphragm type cylinder is located in described Air-Inlet Controller, and the two ends of described adjustment (adjusting) lever are connected with described diaphragm type cylinder, described butterfly valve respectively.
3. the regulating system of bleeding of a kind of vacuum pump according to claim 2, it is characterized in that, also comprise vacuum breaker, the first pipeline and second pipe, described right cavity is communicated with atmosphere, one end of described vacuum breaker is connected with described left cavity by the first pipeline, the other end of described vacuum breaker is communicated with atmosphere, on described the first pipeline, is provided with a minute mouth of pipe, and the mouth of pipe was connected with described pipeline by described second pipe in described minute.
4. the regulating system of bleeding of a kind of vacuum pump according to claim 3, is characterized in that, on described vacuum breaker, also is provided with and controls the automatic opening device that described vacuum breaker is opened, and described automatic opening device is connected with described pipeline.
5. the regulating system of bleeding of a kind of vacuum pump according to claim 3, is characterized in that, also comprises filter, and described vacuum breaker is communicated with atmosphere by described filter.
6. the regulating system of bleeding of a kind of vacuum pump according to claim 2, is characterized in that, also comprises extension spring, and described diaphragm type cylinder is connected with described adjustment (adjusting) lever by described extension spring.
7. the regulating system of bleeding of a kind of vacuum pump according to claim 3, is characterized in that, on described second pipe, is provided with throttle valve.
According to claim 1 to 7 arbitrary described a kind of vacuum pump the regulating system of bleeding, it is characterized in that, on described pipeline, also be provided with breather check valve.
9. vacuum pump, comprise have suction port, the vacuum pump body of relief opening, it is characterized in that, the suction port of described vacuum pump body is connected with the regulating system of bleeding of the arbitrary described a kind of vacuum pump of claim 1 to 8.
10. a kind of vacuum pump according to claim 9, is characterized in that, described vacuum pump body is the screw vacuum pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298053.1A CN103398009B (en) | 2013-07-16 | 2013-07-16 | The regulating system of bleeding of a kind of vacuum pump and vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298053.1A CN103398009B (en) | 2013-07-16 | 2013-07-16 | The regulating system of bleeding of a kind of vacuum pump and vacuum pump |
Publications (2)
| Publication Number | Publication Date |
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| CN103398009A true CN103398009A (en) | 2013-11-20 |
| CN103398009B CN103398009B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310298053.1A Expired - Fee Related CN103398009B (en) | 2013-07-16 | 2013-07-16 | The regulating system of bleeding of a kind of vacuum pump and vacuum pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416549A (en) * | 2016-07-13 | 2019-03-01 | 通用电气航空系统有限责任公司 | Pressure difference adjustable cut-off valve |
| CN112228100A (en) * | 2020-09-28 | 2021-01-15 | 中煤科工开采研究院有限公司 | Air pumping system and method for forming roadway atmospheric pressure support |
| CN112879295A (en) * | 2021-01-22 | 2021-06-01 | 重庆开山流体机械有限公司 | Vacuum pumping device |
| CN114263612A (en) * | 2021-11-18 | 2022-04-01 | 华能核能技术研究院有限公司 | Anti-bouncing device and method for vacuum pump |
| CN114688011A (en) * | 2022-05-31 | 2022-07-01 | 江苏邑文微电子科技有限公司 | Process cavity vacuumizing control method and device, electronic equipment and storage medium |
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| CN203430793U (en) * | 2013-07-16 | 2014-02-12 | 深圳寿力亚洲实业有限公司 | Vacuum pump and air exhaust regulating system thereof |
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2013
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| US2044867A (en) * | 1934-06-01 | 1936-06-23 | Ingersoll Rand Co | Regulating device for vacuum pumps |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416549A (en) * | 2016-07-13 | 2019-03-01 | 通用电气航空系统有限责任公司 | Pressure difference adjustable cut-off valve |
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| CN112228100A (en) * | 2020-09-28 | 2021-01-15 | 中煤科工开采研究院有限公司 | Air pumping system and method for forming roadway atmospheric pressure support |
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| CN112879295A (en) * | 2021-01-22 | 2021-06-01 | 重庆开山流体机械有限公司 | Vacuum pumping device |
| CN112879295B (en) * | 2021-01-22 | 2023-03-14 | 重庆开山流体机械有限公司 | Vacuum pumping device |
| CN114263612A (en) * | 2021-11-18 | 2022-04-01 | 华能核能技术研究院有限公司 | Anti-bouncing device and method for vacuum pump |
| CN114263612B (en) * | 2021-11-18 | 2024-02-06 | 华能核能技术研究院有限公司 | Pump jump preventing device and method for vacuum pump |
| CN114688011A (en) * | 2022-05-31 | 2022-07-01 | 江苏邑文微电子科技有限公司 | Process cavity vacuumizing control method and device, electronic equipment and storage medium |
| CN114688011B (en) * | 2022-05-31 | 2022-08-12 | 江苏邑文微电子科技有限公司 | Process cavity vacuumizing control method and device, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN103398009B (en) | 2016-02-03 |
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Granted publication date: 20160203 Termination date: 20190716 |