CN108799054A - A kind of intelligent vacuum pump with vacuum detecting function - Google Patents
A kind of intelligent vacuum pump with vacuum detecting function Download PDFInfo
- Publication number
- CN108799054A CN108799054A CN201810911862.8A CN201810911862A CN108799054A CN 108799054 A CN108799054 A CN 108799054A CN 201810911862 A CN201810911862 A CN 201810911862A CN 108799054 A CN108799054 A CN 108799054A
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- China
- Prior art keywords
- vacuum
- cylinder body
- check valve
- air inlet
- detecting function
- 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.)
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- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention provides a kind of intelligent vacuum pump with vacuum detecting function, is related to vacuum pump technology field.Including cylinder body and vacuum producing mechanism, setting piston is slided in cylinder body；Air inlet check valve is arranged in cylinder body upper end, and gas outlet check valve is arranged in cylinder body side；Vacuum producing mechanism band piston moves reciprocatingly in cylinder body；Air inlet check valve end set vacuum checking device, vacuum checking device include the sense channel and vacuum detection instrument of connecting tube, L-shaped structure, and sense channel one end is arranged inside connecting tube, and the other end is arranged in air inlet check valve；Vacuum detection instrument is connect with sense channel；Vacuum detection instrument includes vacuum meter and the vacuum detection head being connect with vacuum meter, and vacuum detection head includes exploration hole, and exploration hole can be communicated with the sense channel.It is accurate to feed back vacuum degree and make corresponding opening and closing vacuum pump to timely detect vacuum degree in vacuum.Structure is simpler, and operation is simpler.
Description
Technical field
The invention belongs to vacuum pump technology fields, and in particular to a kind of intelligent vacuum pump with vacuum detecting function.
Background technology
Vacuum pump refers to being obtained using machinery, physics, chemically or physically chemical method to being evacuated by pumping container
The device or equipment of vacuum.For popular, vacuum pump is to improve, generate and maintain true in a certain enclosure space with various methods
Empty device.
By the operation principle of vacuum pump, vacuum pump can substantially be divided into two types, i.e. gas trapping pump and gas passes
Defeated pump.It is widely used in the industries such as metallurgy, chemical industry, food, electronics plated film.
But existing vacuum pump is in the process of running, is separate structure due to vacuumizing and detecting vacuum degree,
Therefore vacuum degree can not timely be fed back.On the one hand cause the precision vacuumized not high, on the other hand vacuumize and detect vacuum
Separate structure is spent, causes apparatus structure complicated, vacuum pumping is complicated.
Invention content
To avoid above-mentioned deficiency of the prior art, the present invention from providing a kind of intelligent with vacuum detecting function
Vacuum pump solves the technical issues of existing vacuum pump can not detect vacuum degree in time in vacuum.
The present invention is achieved by the following technical solutions：
A kind of intelligent vacuum pump with vacuum detecting function, including cylinder body and vacuum producing mechanism slide in the cylinder body
It is provided with piston；
The cylinder body upper end is provided with air inlet check valve, and the side of the cylinder body is provided with gas outlet check valve；It is described true
Empty generation mechanism drives the piston to move reciprocatingly along the length direction of cylinder body in cylinder body；
The one end of the air inlet check valve far from cylinder body is provided with vacuum checking device, and the vacuum checking device includes connecting
It takes over, the sense channel and vacuum detection instrument of L-shaped structure, the one end of the sense channel is arranged inside connecting tube, and one
End set is in air inlet check valve；The vacuum detection instrument is connect with the sense channel；
The vacuum detection instrument includes vacuum meter and the vacuum detection head being connect with the vacuum meter, and the vacuum detection head includes
Exploration hole, the exploration hole can be communicated with the sense channel.
Preferably, the vacuum producing mechanism includes the cavity being arranged in cylinder body lower end, the inside cavity setting circle
The eccentric part rotation of shape turntable, the round turntable is provided with connecting rod, and the other end of the connecting rod is connect with the piston rotation.
Preferably, the air inlet check valve includes the opening being arranged in cylinder body upper end, and in cylinder body upper end
Survey portion is provided with air inlet baffle by torsional spring rotation.
Preferably, the gas outlet check valve includes the opening being arranged in the cylinder body side, and and cylinder
The gas outlet baffle that side portion open outside passes through torsional spring rotation setting.
Preferably, the vacuum detection instrument is fixed at the outside of the connecting tube by securing member.
Preferably, cylinder is arranged by connecting flange in the other end of the connecting tube, slides and sets in the sense channel
It is equipped with sealing element, the one end connection of the sealing element and cylinder, the cylinder drives the sealing element along sense channel
Length direction moves back and forth.
Preferably, it is provided with rubber washer outside the vacuum detection head.
Preferably, the gas outlet check valve is set as two, and described two gas outlet check valves are oppositely arranged.
Beneficial effects of the present invention include：
The present invention proposes a kind of intelligent vacuum pump with vacuum detecting function, by using vacuum producing mechanism band piston
It is reciprocating so that the volume change of cylinder body, so that the inside and outside generation pressure difference of cylinder body, where air inlet check valve
Gas feed is externally evacuated under the action of pressure difference, realizes the effect vacuumized.And the vacuum pump is in air inlet check valve
It is provided with sky detection device outside, the sense channel of L-shaped structure promotes in vacuum, and it is logical that gas can smoothly enter into detection
Road, it is accurate to feed back vacuum degree and make corresponding opening and closing vacuum pump to timely detect vacuum degree.Structure is more
Add simply, operation is simpler.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the overall structure consciousness figure that there is the intelligent vacuum of vacuum detecting function of the embodiment of the present invention to pump；
Fig. 2 is the overall structure diagram of vacuum checking device of the embodiment of the present invention；
Fig. 3 is the overall structure diagram of vacuum detection instrument of the embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, and do not have to
It is of the invention in limiting.
The embodiment of the present invention provides a kind of intelligent vacuum pump with vacuum detecting function, as shown in Fig. 1 ~ 3, including cylinder
Piston 3 is arranged in body 1 and vacuum producing mechanism, 1 inner sliding of the cylinder body；
1 upper end of the cylinder body has air inlet check valve, the side of the cylinder body 1 to be provided with gas outlet check valve；The vacuum
Generation mechanism drives the piston 3 to move reciprocatingly along the length direction of cylinder body 1 in cylinder body 1；The vacuum producing mechanism
Including being arranged the cavity 2 in 1 lower end of cylinder body, 2 inside of the cavity is arranged round turntable 301, the round turntable 301 it is inclined
Rotation is provided with connecting rod 302 at the heart, and the other end of the connecting rod 302 is rotatablely connected with the piston 3.Motor drives round turntable
301 rotations pass through connecting rod since connecting rod 302 is connect with 301 bias of round turntable in 301 rotation process of round turntable
Band piston 3 moves back and forth in cylinder body 1.
Specifically, the air inlet check valve includes the opening being arranged in 1 upper end of cylinder body, and with 1 upper end of cylinder body
Interior survey portion is provided with air inlet baffle by torsional spring rotation.
The gas outlet check valve includes the opening being arranged in 1 side of the cylinder body, and with outside 1 side mouth of cylinder body
Pass through the gas outlet baffle of torsional spring rotation setting.
The one end of the air inlet check valve far from cylinder body 1 is provided with vacuum checking device 4, the vacuum checking device
4 include that connecting tube 402, the sense channel 401 of L-shaped structure and vacuum detection instrument 25, the one end of the sense channel 401 are set
It sets inside connecting tube 402, one end is arranged in air inlet check valve；The vacuum detection instrument 5 and the sense channel 401
Connection；
The vacuum detection instrument 5 includes vacuum meter 501 and the vacuum detection head 503 being connect with the vacuum meter 501, the vacuum
Detecting head 503 includes exploration hole 504, and the exploration hole 504 can be communicated with the sense channel 401.
The specific course of work, sense channel 401 are set as L-shaped structure, which can guide extraneous gas
Into inside sense channel 401, to detect extraneous vacuum degree by vacuum detection instrument 5.
The vacuum detection instrument 25 is fixed at the outside of the connecting tube 402 by securing member 6.
Cylinder 7 is arranged by connecting flange 404 in the other end of the connecting tube 402, is slided in the sense channel 401
It is provided with sealing element 7, the sealing element 7 is connect with the one end of cylinder 7, and the cylinder 7 drives the sealing element 7 along detection
The length direction in channel 401 moves back and forth.It is provided with rubber washer 502 outside the vacuum detection head 503.
The gas outlet check valve is set as two, and described two gas outlet check valves are oppositely arranged.
Operation principle：When piston 3 is moved downward with connecting rod 302 so that there are draught heads with the external world for cylinder body 1, thus
So that pushing air inlet baffle to open downwards in gas pressure so that ambient atmos are pumped in cylinder body 1, are realized to extraneous pumping
Vacuum；When piston 3 moves up, air inlet baffle closes the opening of upper end under the effect of torsion spring, and opening is provided with gear
Block so that air inlet baffle will not rotate outward；At this time under the action of internal and external pressure difference so that the gas outlet baffle of side is beaten
It opens, says that the gas in cylinder body 1 is discharged outside to.When piston 3 moves down again, under the effect of torsion spring, gas outlet flapper closure
The opening of side, and opened under gas pressure and carry out mouth baffle, it is moved back and forth with this, the external world is vacuumized to realize.
It is pushed by cylinder 7 and is moved in length direction of the sealing element 7 along sense channel 401, closed exploration hole 504 by sealing element 7
It closes, stops detection vacuum degree；When 7 outward movment of sealing element, open exploration hole 504 be detected to vacuum degree.
The embodiment of the present invention has the advantages that compared with the existing technology：
A kind of intelligent vacuum pump with vacuum detecting function of the embodiment of the present invention, drives by using vacuum producing mechanism
Piston is reciprocating so that the volume change of cylinder body, so that the inside and outside generation pressure difference of cylinder body, air inlet check valve institute
Gas feed in pressure difference under the action of be externally evacuated, realize the effect vacuumized.And the vacuum pump is in air inlet list
Sky detection device is provided with to outside valve, the sense channel of L-shaped structure promotes in vacuum, and gas can smoothly enter into inspection
Survey channel, it is accurate to feed back vacuum degree and make corresponding opening and closing vacuum pump to timely detect vacuum degree.Knot
Structure is simpler, and operation is simpler.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of intelligent vacuum pump with vacuum detecting function, which is characterized in that including cylinder body（1）Machine is generated with vacuum
Structure, the cylinder body（1）In sliding be provided with piston（3）；
The cylinder body（1）Upper end is provided with air inlet check valve, the cylinder body（1）Side be provided with gas outlet check valve；
The vacuum producing mechanism drives the piston（3）In cylinder body（1）In along cylinder body（1）Length direction move reciprocatingly；
The air inlet check valve is far from cylinder body（1）One end be provided with vacuum checking device（4）, the vacuum checking device
（4）Including connecting tube（402）, L-shaped structure sense channel（401）And vacuum detection instrument（25）, the sense channel（401）
One end be arranged in connecting tube（402）Inside, the other end are arranged in air inlet check valve；The vacuum detection instrument（5）
With the sense channel（401）Connection；
The vacuum detection instrument（5）Including vacuum meter（501）With with the vacuum meter（501）The vacuum detection head of connection（503）,
The vacuum detection head（503）Including exploration hole（504）, the exploration hole（504）It can be with the sense channel（401）Phase
It is logical.
2. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the vacuum generates
Mechanism includes being arranged in cylinder body（1）The cavity of lower end（2）, the cavity（2）Inside setting round turntable（301）, the circle
Shape turntable（301）Eccentric part rotation be provided with connecting rod（302）, the connecting rod（302）The other end and the piston（3）Rotation
Connection；Motor drives the round turntable（301）Rotation.
3. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the air inlet list
Include being arranged in cylinder body to valve（1）The opening of upper end, and and cylinder body（1）The interior survey portion of upper end is provided with by torsional spring rotation
Air inlet baffle.
4. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the gas outlet is single
Include being arranged in the cylinder body to valve（1）The opening of side, and and cylinder body（1）It is rotated and is arranged by torsional spring outside side mouth
Gas outlet baffle.
5. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the vacuum detecting
Instrument（25）Pass through securing member（6）It is fixed at the connecting tube（402）Outside.
6. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the connecting tube
（402）The other end pass through connecting flange（404）Cylinder is set（7）, the sense channel（401）Interior sliding is provided with sealing
Part（7）, the sealing element（7）With cylinder（7）One end connection, the cylinder（7）Drive the sealing element（7）Along detection
Channel（401）Length direction move back and forth.
7. the intelligent vacuum with vacuum detecting function pumps as described in claim 1, which is characterized in that the vacuum detection
Head（503）Outside is provided with rubber washer（502）.
8. as there is claim 1 ~ 7 any one of them the intelligent vacuum of vacuum detecting function to pump, which is characterized in that described
Gas outlet check valve is set as two, and described two gas outlet check valves are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911862.8A CN108799054A (en) | 2018-08-10 | 2018-08-10 | A kind of intelligent vacuum pump with vacuum detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911862.8A CN108799054A (en) | 2018-08-10 | 2018-08-10 | A kind of intelligent vacuum pump with vacuum detecting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108799054A true CN108799054A (en) | 2018-11-13 |
Family
ID=64079853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810911862.8A Pending CN108799054A (en) | 2018-08-10 | 2018-08-10 | A kind of intelligent vacuum pump with vacuum detecting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799054A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469627A (en) * | 2019-01-07 | 2019-03-15 | 苏州经贸职业技术学院 | A kind of centrifugal pump Portable air extraction device and centrifugal pumping apparatus |
| CN109470434A (en) * | 2018-12-06 | 2019-03-15 | 安徽方圆机电股份有限公司 | A kind of pneumatic sealing test device and its detection method |
| CN114687992A (en) * | 2020-12-31 | 2022-07-01 | 苏州卓兆点胶股份有限公司 | Vacuum generating system for sealed cavity |
| CN114687998A (en) * | 2020-12-28 | 2022-07-01 | 苏州卓兆点胶股份有限公司 | Gas suction device for vacuum cavity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398338A (en) * | 2007-09-27 | 2009-04-01 | 上海梅林正广和股份有限公司 | Vacuum detection device |
| CN102777369A (en) * | 2011-05-13 | 2012-11-14 | 弗卢克公司 | Apparatus using electronically-controlled valves |
| CN104669058A (en) * | 2015-03-10 | 2015-06-03 | 丹阳市鼎新机械设备有限公司 | Vacuum detector with on-off function |
| CN207145207U (en) * | 2017-08-08 | 2018-03-27 | 威海东兴电子有限公司 | Piston type pneumatic compresses and negative pressure all-in-one |
| CN107975464A (en) * | 2016-10-24 | 2018-05-01 | 陶智军 | A kind of Miniature vacuum pump without oil |
| CN208870752U (en) * | 2018-08-10 | 2019-05-17 | 合肥市恒昌自动化控制有限责任公司 | A kind of intelligent vacuum pump with vacuum detecting function |
-
2018
- 2018-08-10 CN CN201810911862.8A patent/CN108799054A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398338A (en) * | 2007-09-27 | 2009-04-01 | 上海梅林正广和股份有限公司 | Vacuum detection device |
| CN102777369A (en) * | 2011-05-13 | 2012-11-14 | 弗卢克公司 | Apparatus using electronically-controlled valves |
| CN104669058A (en) * | 2015-03-10 | 2015-06-03 | 丹阳市鼎新机械设备有限公司 | Vacuum detector with on-off function |
| CN107975464A (en) * | 2016-10-24 | 2018-05-01 | 陶智军 | A kind of Miniature vacuum pump without oil |
| CN207145207U (en) * | 2017-08-08 | 2018-03-27 | 威海东兴电子有限公司 | Piston type pneumatic compresses and negative pressure all-in-one |
| CN208870752U (en) * | 2018-08-10 | 2019-05-17 | 合肥市恒昌自动化控制有限责任公司 | A kind of intelligent vacuum pump with vacuum detecting function |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470434A (en) * | 2018-12-06 | 2019-03-15 | 安徽方圆机电股份有限公司 | A kind of pneumatic sealing test device and its detection method |
| CN109469627A (en) * | 2019-01-07 | 2019-03-15 | 苏州经贸职业技术学院 | A kind of centrifugal pump Portable air extraction device and centrifugal pumping apparatus |
| CN109469627B (en) * | 2019-01-07 | 2024-04-26 | 苏州经贸职业技术学院 | Portable air exhaust device of centrifugal pump and centrifugal pump equipment |
| CN114687998A (en) * | 2020-12-28 | 2022-07-01 | 苏州卓兆点胶股份有限公司 | Gas suction device for vacuum cavity |
| CN114687998B (en) * | 2020-12-28 | 2024-04-30 | 苏州卓兆点胶股份有限公司 | Gas suction device for vacuum chamber |
| CN114687992A (en) * | 2020-12-31 | 2022-07-01 | 苏州卓兆点胶股份有限公司 | Vacuum generating system for sealed cavity |
| CN114687992B (en) * | 2020-12-31 | 2024-04-30 | 苏州卓兆点胶股份有限公司 | Vacuum generating system for sealing cavity |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181113 |