CN103398009B - The regulating system of bleeding of a kind of vacuum pump and vacuum pump - Google Patents
The regulating system of bleeding of a kind of vacuum pump and vacuum pump Download PDFInfo
- Publication number
- CN103398009B CN103398009B CN201310298053.1A CN201310298053A CN103398009B CN 103398009 B CN103398009 B CN 103398009B CN 201310298053 A CN201310298053 A CN 201310298053A CN 103398009 B CN103398009 B CN 103398009B
- Authority
- CN
- China
- Prior art keywords
- vacuum pump
- pipeline
- bleeding
- vacuum
- regulating system
- 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
Links
Abstract
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; 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 be connected with the suction port of vacuum pump, described pipeline is provided with butterfly valve, also comprises the controlling device regulating described butterfly valve open degree according to the degree of vacuum on described pipeline; Described regulating system of bleeding is added at the suction port place of vacuum pump, the open degree of described butterfly valve is controlled by described controlling device, the different open degree of described butterfly valve can control the rate of air sucked in required entering into vacuum pump, to reach the state of equilibrium of bleeding with demand, by the described adjustment of regulating system to degree of vacuum of bleeding, make vacuum pump also can keep good stability at long-play, thus the problem avoiding service life of vacuum pump too short; Because the present invention has above-mentioned feature and advantage, can be applied in the products such as vacuum pump for this reason.
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 that one utilizes a pair screw rod, does synchronous high-speed counterrotating and the air-extractor of the air-breathing produced and scavenging action in pump case.Two screw rods corrects through fine dynamic balance, by bearings, is arranged in pump case, certain gap is had, therefore, during screw vacuum pump work between screw rod and screw rod, two screw rods is each other without friction, smooth running, noise is low, can extract the gas occasion containing a large amount of water vapor 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 and degree of vacuum regulated, cause its long playing poor stability, thus make screw vacuum pump too short for working life.
Summary of the invention
Not enough for prior art, 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 and regulate degree of vacuum, cause its long playing poor stability, thus the problem making screw vacuum pump working life too short.
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 be connected with the suction port of vacuum pump, described pipeline is provided with butterfly valve, also comprises the controlling device 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 the Air-Inlet Controller with left cavity and right cavity, the diaphragm type cylinder moved according to described left cavity and described right chamber pressure difference and adjustment (adjusting) lever, 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 air, 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 air, described first pipeline is provided with a point mouth of pipe, and the described point of mouth of pipe is connected with described pipeline by described second pipe.
Further technological scheme can also be, described vacuum breaker is also provided with the automatic opening device controlling described vacuum breaker and open, described automatic opening device is connected with described pipeline.
Further technological scheme can also be, also comprise filter, and described vacuum breaker is communicated with air by described filter.
Further technological scheme can also be, also comprise extension spring, and described diaphragm type cylinder is connected with described adjustment (adjusting) lever by described extension spring.
Further technological scheme can also be, described second pipe is provided with throttle valve.
Further technological scheme can also be, described pipeline is also provided with breather check valve.
The present invention also proposes a kind of vacuum pump, comprises the vacuum pump body with suction port, relief opening, and 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, described vacuum pump body is screw vacuum pump body.
According to above-mentioned technological scheme, beneficial effect of the present invention: add described regulating system of bleeding at the suction port place of vacuum pump, the open degree of described butterfly valve is controlled by described controlling device, the different open degree of described butterfly valve can control the rate of air sucked in required entering into vacuum pump, to reach the state of equilibrium of bleeding with demand, by the described adjustment of regulating system to degree of vacuum of bleeding, make vacuum pump also can keep good stability at long-play, thus the problem avoiding service life of vacuum pump too short.
Because the present invention has above-mentioned feature and advantage, can be applied in the products such as vacuum pump for this reason.
Accompanying drawing explanation
The structural representation of regulating system of bleeding described in Fig. 1 application technical solution of the present invention.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, 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, be 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 be connected with the suction port of vacuum pump, pipeline 1 is provided with butterfly valve 2, also comprises the controlling device 3 according to degree of vacuum regulating butterfly valve 2 open degree on pipeline 1.
Wherein, described regulating system of bleeding is added at the suction port place of vacuum pump, the open degree of butterfly valve 2 is controlled by controlling device 3, the different open degree of butterfly valve 2 can control the rate of air sucked in required entering into vacuum pump, to reach the state of equilibrium of bleeding with demand, by the described adjustment of regulating system to degree of vacuum of bleeding, make vacuum pump also can keep good stability at long-play, thus the problem avoiding service life of vacuum pump too short.
Preferably, controlling device 3 comprises the Air-Inlet Controller 31 with left cavity (not marking in the drawings) and right cavity (not marking in the drawings), the diaphragm type cylinder (not marking in the drawings) moved according to described left cavity and described right chamber pressure difference 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 there is pressure difference between described left cavity and described right cavity, make described diaphragm type cylinder moving thus drive adjustment (adjusting) lever 32 to move, adjustment (adjusting) lever 32 controls the open degree of butterfly valve 2, thus controls the rate of air sucked in required entering 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, first pipeline 5 and second pipe 6, described right cavity is communicated with air, 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 air, first pipeline 5 is provided with a point mouth of pipe (not marking in the drawings), the described point of mouth of pipe is connected with pipeline 1 by second pipe 6.Particularly, the joint of second pipe 6 and pipeline 1 is between butterfly valve 2 and described second joint 12, air in described left cavity can be extracted by vacuum pump through the first pipeline 5 and second pipe 6, thus make to there is pressure difference between described left cavity and described right cavity, in order to reach the pressure difference of needs, by opening and regulating vacuum breaker 4, air is allowed to enter described left cavity by vacuum breaker 4, thus the pressure adjusted in described left cavity, allow the pressure difference that there are needs between described left cavity and described right cavity, and then, the open degree of butterfly valve 2 is controlled by adjustment (adjusting) lever 32.
Preferably, vacuum breaker 4 is also provided with the automatic opening device (not marking in the drawings) controlling vacuum breaker 4 and open, described automatic opening device is connected with pipeline 1.Particularly, described automatic opening device is connected with the part in pipeline 1 between butterfly valve 2 with the first joint 11, described automatic opening device controls the unlatching of vacuum breaker 4 and regulates vacuum breaker 4 to open size, described automatic opening device sets required specified degree of vacuum, when the degree of vacuum of pipeline 1 is higher than described automatic opening device setting value, described automatic opening device orders about vacuum breaker 4 and opens, air is made to enter into the described left cavity of described Air-Inlet Controller 31, thus change the pressure difference of left cavity and described right cavity described in described Air-Inlet Controller 31, make the open degree of adjustment (adjusting) lever 32 action control butterfly valve 2.
Further, also comprise filter 7, vacuum breaker 4 is communicated with air by filter 7.Filter 7 stops the impurity in air, avoids the impurity in air to enter vacuum breaker 4, causes bad impact to described regulating system of bleeding.
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 the piston rod in described diaphragm type cylinder, adjustment (adjusting) lever 32 respectively.
Further, second pipe 6 is provided with throttle valve 61.Regulate throttle valve 61 that the gas flow in second pipe 6 can be made to stablize.
Further, pipeline 1 is also 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 is shut down, breather check valve 9 can stop air to be entered by pipeline 1 to treat in vaccum-pumping equipment.
In sum, described regulating system of bleeding is rich in splendid degree of vacuum and regulates and stabilization function, can realize the air inlet adjustment of automatic 0 ~ 100%; Can guarantee that fluctuations of vacuum is in ± 5mbar scope, can provide the vacuum of stable no pulse, its degree of vacuum and rate of air sucked in required can substantially by the impacts of extraneous factor, and property indices is reliable and stable.Three phases is had: starting, conventional operation, capacity regulating in vacuum pump running; Can be undertaken regulating by described regulating system of bleeding and reach the state of equilibrium of bleeding with demand respectively in three phases.A specified degree of vacuum is selected to be that the vacuum pump of 20in.Hg (508mm mercury column) is described in the present embodiment:
1, starting period: after pressing starting button, this vacuum pump entry into service, the degree of vacuum be in pipeline 1 between butterfly valve 2 and this vacuum pump is raised to 15in.Hg from 0 rapidly, along with the rising of degree of vacuum, butterfly valve 2 is opened gradually, when degree of vacuum is raised to 15in.Hg, butterfly valve 2 is all opened, and this vacuum pump starts running at full capacity.
2, the conventional operation stage: described regulating system degree of vacuum of bleeding is more than after 15in.Hg, and butterfly valve 2 standard-sized sheet, this vacuum pump running at full capacity, in this case, vacuum breaker 4 cuts out always, and Air-Inlet Controller 31 is also failure to actuate.
3, the capacity regulating stage: if required rate of air sucked in required is lower than rating value, described regulating system degree of vacuum of bleeding will constantly rise, when more than 20in.Hg(508mm mercury column) after, vacuum breaker 4 will be opened gradually, air enters in Air-Inlet Controller 31, butterfly valve 2 part is closed, allows the demand of rate of air sucked in required and client match, under described regulating system self-regulation of bleeding, 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 the vacuum pump body 100 with suction port (not marking in the drawings), 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 screw vacuum pump body.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
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 be connected with the suction port of vacuum pump, it is characterized in that, described pipeline is provided with butterfly valve, also comprises the controlling device regulating described butterfly valve open degree according to the degree of vacuum on described pipeline;
Described controlling device comprises the Air-Inlet Controller with left cavity and right cavity, the diaphragm type cylinder moved according to described left cavity and described right chamber pressure difference and adjustment (adjusting) lever, 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;
The regulating system of bleeding of described vacuum pump also comprises vacuum breaker, the first pipeline and second pipe, described right cavity is communicated with air, 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 air, described first pipeline is provided with a point mouth of pipe, and the described point of mouth of pipe is connected with described pipeline by described second pipe;
The joint of described second pipe and described pipeline is between described butterfly valve and described second joint.
2. the regulating system of bleeding of a kind of vacuum pump according to claim 1, is characterized in that, described vacuum breaker is also provided with the automatic opening device controlling described vacuum breaker and open, described automatic opening device is connected with described pipeline.
3. the regulating system of bleeding of a kind of vacuum pump according to claim 1, is characterized in that, also comprise filter, and described vacuum breaker is communicated with air by described filter.
4. the regulating system of bleeding of a kind of vacuum pump according to claim 1, is characterized in that, also comprise extension spring, and described diaphragm type cylinder is connected with described adjustment (adjusting) lever by described extension spring.
5. the regulating system of bleeding of a kind of vacuum pump according to claim 1, is characterized in that, described second pipe is provided with throttle valve.
6., according to the regulating system of bleeding of the arbitrary described a kind of vacuum pump of claim 1 to 5, it is characterized in that, described pipeline is also provided with breather check valve.
7. a vacuum pump, comprises the vacuum pump body with suction port, 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 6.
8. a kind of vacuum pump according to claim 7, is characterized in that, described vacuum pump body is 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 |
|---|---|
| CN103398009A CN103398009A (en) | 2013-11-20 |
| CN103398009B true CN103398009B (en) | 2016-02-03 |
Family
ID=49561700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103398009B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10241523B2 (en) * | 2016-07-13 | 2019-03-26 | Ge Aviation Systems, Llc | Differential pressure regulating shut-off valve |
| CN112228100B (en) * | 2020-09-28 | 2023-03-07 | 中煤科工开采研究院有限公司 | Air pumping system and method for forming roadway atmospheric pressure support |
| CN112879295B (en) * | 2021-01-22 | 2023-03-14 | 重庆开山流体机械有限公司 | Vacuum pumping device |
| 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 |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2044867A (en) * | 1934-06-01 | 1936-06-23 | Ingersoll Rand Co | Regulating device for vacuum pumps |
| GB2090946A (en) * | 1981-01-02 | 1982-07-21 | Dienes Werke | Butterfly valve |
| GB2115110A (en) * | 1982-01-21 | 1983-09-01 | Hoerbiger Ventilwerke Ag | Improvements in or relating to arrangements for controlling starting of screw-type compressor |
| GB2133585A (en) * | 1983-01-13 | 1984-07-25 | Hoerbiger Ventilwerke Ag | A screw compressor control arrangement |
| CN201779018U (en) * | 2010-07-30 | 2011-03-30 | 上海斯可络压缩机有限公司 | Oil pressure control air inlet valve for oilless screw compressor |
| 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 |
-
2013
- 2013-07-16 CN CN201310298053.1A patent/CN103398009B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2044867A (en) * | 1934-06-01 | 1936-06-23 | Ingersoll Rand Co | Regulating device for vacuum pumps |
| GB2090946A (en) * | 1981-01-02 | 1982-07-21 | Dienes Werke | Butterfly valve |
| GB2115110A (en) * | 1982-01-21 | 1983-09-01 | Hoerbiger Ventilwerke Ag | Improvements in or relating to arrangements for controlling starting of screw-type compressor |
| GB2133585A (en) * | 1983-01-13 | 1984-07-25 | Hoerbiger Ventilwerke Ag | A screw compressor control arrangement |
| CN201779018U (en) * | 2010-07-30 | 2011-03-30 | 上海斯可络压缩机有限公司 | Oil pressure control air inlet valve for oilless screw compressor |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103398009A (en) | 2013-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103398009B (en) | The regulating system of bleeding of a kind of vacuum pump and vacuum pump | |
| CN201255257Y (en) | Power constant control valve | |
| JP3219604U (en) | Vacuum energy-saving large-capacity precision pressure regulator | |
| CN202250869U (en) | Gas circuit control system of screw compressor | |
| CN102278148A (en) | Full-period steam inlet steam turbine generator unit and primary frequency adjusting method thereof | |
| CN106382408B (en) | Hyper-pressure pressure-loss cut-out type pressure regulator | |
| CN210950130U (en) | Multifunctional water pump control high-pressure valve | |
| CN104018890A (en) | Turbine low pressure cylinder end shaft seal steam supply system | |
| CN203430793U (en) | Vacuum pump and air exhaust regulating system thereof | |
| CN102720867A (en) | Self-operated flow control valve capable of automatically adjusting pressure difference | |
| CN2784699Y (en) | Pressure stable throttle valve | |
| CN205226496U (en) | Possesses gas self -closing valve that magnetism overflowed pressure differential | |
| CN203477507U (en) | Indoor multifunctional fuel gas self-closing valve | |
| CN203641146U (en) | Direct-acting hydraulic threaded cartridge buffering overflow valve | |
| CN106438546B (en) | A kind of voltage stabilizing pilot operated compound relief valve | |
| CN101216004A (en) | Balanced mixture gas dispensing device | |
| CN104197026A (en) | Balancing floating combined structure of fuel gas pressure regulator | |
| CN209325117U (en) | A kind of lever gas pressure regulator, governor | |
| CN203656339U (en) | Direct action medium pressure piston type pressure regulator | |
| CN103615568B (en) | Non-ice-blockage high-pressure-differfull-balance full-balance type pressure regulator | |
| CN106838390A (en) | New type pressure regulating valve pilot valve | |
| CN202580179U (en) | Novel controller for gas pressure regulator | |
| CN202597828U (en) | Self-operated pressure difference controller | |
| CN204961233U (en) | A admission valve for coal bed gas compressor | |
| CN205938028U (en) | Pressure regulating, cut off integrative full balanced type high pressure gas voltage regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160203 Termination date: 20190716 |