CN102352873A - Driving-executing device capable of simultaneously regulating positive and negative pressures - Google Patents
Driving-executing device capable of simultaneously regulating positive and negative pressures Download PDFInfo
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- CN102352873A CN102352873A CN2011101942980A CN201110194298A CN102352873A CN 102352873 A CN102352873 A CN 102352873A CN 2011101942980 A CN2011101942980 A CN 2011101942980A CN 201110194298 A CN201110194298 A CN 201110194298A CN 102352873 A CN102352873 A CN 102352873A
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Abstract
The invention relates to a driving-executing device capable of simultaneously regulating positive and negative pressures, and the simultaneous control for the positive and negative pressures can be realized through an air pump. The driving-executing device comprises the air pump, wherein an inlet and an outlet of the air pump are respectively communicated with the public ends of a first three-way electromagnetic valve and a second three-way electromagnetic valve; the normally-closed ends of the first three-way electromagnetic valve and the second three-way electromagnetic valve are communicated with the atmosphere; the normally-open end of the first three-way electromagnetic valve is communicated with a negative-pressure chamber, and the normally-open end of the second three-way electromagnetic valve is communicated with a positive-pressure chamber; a positive-pressure sensor is communicated with the positive-pressure chamber, and a negative-pressure sensor is communicated with the negative-pressure chamber; and the control ends of the air pump, the first three-way electromagnetic valve and the second three-way electromagnetic valve are respectively connected with a control unit, and the negative-pressure sensor and the positive-pressure sensor are respectively connected to the input of a control unit through a negative-pressure acquisition unit and a positive-pressure acquisition unit. The driving-executing device has the advantages that: the cost is low, the reliability is high, a set pressure value can be regulated, and the air pump can be closed under the condition that both the positive and negative pressures have no air consumption.
Description
Technical field
The present invention relates to a kind of driving execution device that can regulate positive negative pressure simultaneously, be used for the pressure-driven of medical inspection equipment.
Background technique
In the pneumatic control field, often need use malleation or negative pressure driving execution element and realize specific action.Set up separately malleation or negative pressure implement comparatively simple, can be by an air pump, pressure regulator valve and a pressure-stored tank are formed.
But in some cases, need use malleation and negative pressure simultaneously.Can set up malleation and negative pressure respectively in this case; As shown in Figure 1, according to the contrast of the force value and the desired value of pressure transducer 15, when pressure transducer 15 measured values do not arrive desired value; Electronic control unit can be opened air pump 1 and bleed with 13 pairs of pressure-stored tanks 14 of solenoid valve; When the measured value of pressure transducer 15 reached desired value, electronic control unit can stop air pump 1 and solenoid valve 13, stops to bleed.Application of sub-atmospheric pressure device 16 is connected with pressure-stored tank 14.The application of sub-atmospheric pressure device 16 here is meant any one executive component that needs with the negative pressure driving.
Identical with the above-mentioned situation of setting up negative pressure, need another set of structure and set up malleation, implementation methods is identical, and is just that air pump 1 is reverse.This method can realize setting up the function of positive and negative pressure, but needs two air pumps, and two cover control circuits are realized comparatively complicated.
Also have a kind of implementation as shown in Figure 2, this mode utilizes an air pump 1 and two pressure regulator valves to realize setting up simultaneously positive negative pressure.The outlet of air pump 1 connects plemum 5 through malleation pressure regulator valve 17; The import of air pump 1 meets negative pressure chamber 4 through negative pressure pressure regulator valve 12; Positive pressure sensor 9 detects the force value of plemum 5; B/P EGR Back Pressure Transducer EGR 8 detects the force value of negative pressure chamber 4, and malleation application device 7, application of sub-atmospheric pressure device 6 are connected with plemum 5 and negative pressure chamber 4 respectively.This scheme has reduced by an air pump with respect to last a kind of scheme, but the cost of pressure regulator valve will be higher than solenoid valve, and pressure regulator valve is comparatively harsh to the Environmental Conditions requirement, also need add some auxiliary airhandling equipments, and cost can rise on the whole; The adjusting pressure of pressure regulator valve is a fixed value simultaneously, and malleation of being set up and negative pressure can not change; Even this device does not all have in positive negative pressure and need open air pump 1 under the situation of consumption gas yet and just can keep positive negative pressure.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of driving execution device that can regulate positive negative pressure simultaneously is provided
, control when having realized positive negative pressure through an air pump and two solenoid valves.
According to technological scheme provided by the invention, a kind of driving execution device that can regulate positive negative pressure simultaneously comprises: an air pump, and the import of said air pump communicates with the common port of first three-way magnetic valve and second three-way magnetic valve respectively with outlet; The normal-closed end of first three-way magnetic valve and second three-way magnetic valve is connected atmosphere; The Chang Kaiduan of said first three-way magnetic valve connects negative pressure chamber, and the Chang Kaiduan of second three-way magnetic valve connects plemum; Positive pressure sensor and plemum are connected, and B/P EGR Back Pressure Transducer EGR and negative pressure chamber connect; The control end of said air pump, first three-way magnetic valve and second three-way magnetic valve is connected control unit respectively, and said B/P EGR Back Pressure Transducer EGR and positive pressure sensor are connected to the input of control unit respectively through negative pressure pressure acquisition unit and malleation pressure acquisition unit.
Said plemum and negative pressure chamber are respectively malleation knock out drum and negative pressure knock out drum, play and stablize malleation and action of negative pressure.
Can also between said first three-way magnetic valve and negative pressure chamber, insert filter, in order to water droplet in the filtering gas and dust, the protection air pump.
The method that said apparatus is controlled positive negative pressure is: the negative pressure value of the negative pressure chamber of B/P EGR Back Pressure Transducer EGR collection is uploaded to control unit through the negative pressure pressure acquisition unit; The malleation value of the plemum of malleation sensor acquisition is uploaded to control unit through the malleation pressure acquisition unit; Control unit is according to the negative pressure value of B/P EGR Back Pressure Transducer EGR, malleation value and the predefined negative pressure desired value and the malleation desired value of positive pressure sensor; Sending the order that opens or closes to air pump, first three-way magnetic valve and second three-way magnetic valve, is target value set with the pressure of adjusting plemum, negative pressure chamber.
Advantage of the present invention is:
1. cost is low: only realize the foundation of positive negative pressure simultaneously and replace pressure regulator valve with lower-cost solenoid valve making the present invention on cost, have certain advantage with an air pump.
2. reliability is high: compare and pressure regulator valve, the reliability of solenoid valve is superior to pressure regulator valve.
3. setup pressure value is adjustable: because with circuit control target pressure, therefore can adjust the purpose that goal pressure reaches the positive negative pressure of change in real time.
4. all not having under the situation of consumption gas air pump in positive negative pressure can close: all do not have under the situation of consumption gas in positive negative pressure, positive negative pressure application component is isolated keep-up pressure through switching two three-way magnetic valves, thereby can close air pump.
Description of drawings
Fig. 1 sets up the means for applying negative structural representation.
Fig. 2 utilizes pressure regulator valve to set up the apparatus structure schematic representation of positive negative pressure simultaneously.
Fig. 3 is an apparatus structure schematic representation of setting up positive negative pressure simultaneously of the present invention.
Fig. 4 is a control circuit schematic representation of the present invention.
Fig. 5 is the structural representation of an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 3, device according to the invention comprises: air pump 1, the first three-way magnetic valve 2, the second three-way magnetic valves 3, negative pressure chamber 4, plemum 5, application of sub-atmospheric pressure device 6, malleation application device 7, B/P EGR Back Pressure Transducer EGR 8, positive pressure sensor 9.Also comprise the circuit control section: negative pressure pressure acquisition unit 31; Malleation pressure acquisition unit 32 and control unit 33.
Wherein, the inlet end of air pump 1 and outlet side are connected the common port of first three-way magnetic valve 2 and second three-way magnetic valve 3 respectively; The Chang Kaiduan of first three-way magnetic valve 2 connects negative pressure chamber 4, and B/P EGR Back Pressure Transducer EGR 8 and application of sub-atmospheric pressure device 6 are connected with negative pressure chamber 4, and the normal-closed end 10 of first three-way magnetic valve 2 connects atmosphere; The Chang Kaiduan of second three-way magnetic valve 3 connects plemum 5, and positive pressure sensor 9 and malleation application device 7 are connected with plemum 5, and the normal-closed end 11 of second three-way magnetic valve 3 connects atmosphere.
As shown in Figure 4; In the circuit control section; The control end of air pump 1, first three-way magnetic valve 2 and second three-way magnetic valve 3 is connected control unit 33 respectively, and said B/P EGR Back Pressure Transducer EGR 8 and positive pressure sensor 9 are connected to the input of control unit 33 respectively through negative pressure pressure acquisition unit 31 and malleation pressure acquisition unit 32.B/P EGR Back Pressure Transducer EGR 8 is sent to control unit 33 with the signal that positive pressure sensor 9 is produced through negative pressure pressure acquisition unit 31 and malleation pressure acquisition unit 32; Control unit 33 is to the order of air pump 1, first three-way magnetic valve 2 and second three-way magnetic valve, 3 transmit buttons.
Said apparatus is realized the control of the positive negative pressure in air pump 1 two ends through following flow process:
1. gather the negative pressure value V of B/P EGR Back Pressure Transducer EGR 8; Gather the malleation value P of positive pressure sensor 9;
2. the positive and negative pressure value of above-mentioned collection is uploaded to control unit 33;
3. control unit sends the order that opens or closes according to the negative pressure value V of B/P EGR Back Pressure Transducer EGR 8, malleation value P and the predefined negative pressure desired value V0 and the malleation desired value P0 of positive pressure sensor 9 to air pump 1, first three-way magnetic valve 2 and second three-way magnetic valve 3.
4. (such as 0.1s) repeating step 1-3 least twice whenever at regular intervals.
Be illustrated in figure 5 as one embodiment of the present of invention.With respect to Fig. 1, increased filter 18 at the front end of first three-way magnetic valve 2, in order to water droplet in the filtering gas and dust, protection air pump 1.
Claims (3)
1. the driving execution device that can regulate positive negative pressure simultaneously comprises an air pump (1), it is characterized in that: the import of said air pump (1) communicates with the common port of first three-way magnetic valve (2) and second three-way magnetic valve (3) respectively with outlet; The normal-closed end of first three-way magnetic valve (2) and second three-way magnetic valve (3) is connected atmosphere; The Chang Kaiduan of said first three-way magnetic valve (2) connects negative pressure chamber (4), and the Chang Kaiduan of second three-way magnetic valve (3) connects plemum (5); Positive pressure sensor (9) is connected with plemum (5), and B/P EGR Back Pressure Transducer EGR (8) is connected with negative pressure chamber (4); The control end of said air pump (1), first three-way magnetic valve (2) and second three-way magnetic valve (3) is connected control unit (33) respectively, and said B/P EGR Back Pressure Transducer EGR (8) and positive pressure sensor (9) are connected to the input of control unit (33) respectively through negative pressure pressure acquisition unit (31) and malleation pressure acquisition unit (32).
2. a kind of driving execution device that can regulate positive negative pressure simultaneously as claimed in claim 1 is characterized in that said plemum (5) and negative pressure chamber (4) are respectively malleation knock out drum and negative pressure knock out drum.
3. a kind of driving execution device that can regulate positive negative pressure simultaneously as claimed in claim 1 is characterized in that between said first three-way magnetic valve (2) and negative pressure chamber (4), inserting filter (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101942980A CN102352873A (en) | 2011-07-12 | 2011-07-12 | Driving-executing device capable of simultaneously regulating positive and negative pressures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101942980A CN102352873A (en) | 2011-07-12 | 2011-07-12 | Driving-executing device capable of simultaneously regulating positive and negative pressures |
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| CN102352873A true CN102352873A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101942980A Pending CN102352873A (en) | 2011-07-12 | 2011-07-12 | Driving-executing device capable of simultaneously regulating positive and negative pressures |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223976A (en) * | 2015-10-30 | 2016-01-06 | 南通市飞宇石油科技开发有限公司 | A kind of pressure regulation control system |
| CN110741257A (en) * | 2017-06-30 | 2020-01-31 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and driving method thereof |
| CN111790990A (en) * | 2020-07-14 | 2020-10-20 | 博众精工科技股份有限公司 | Laser cutting device |
| CN112286242A (en) * | 2019-07-25 | 2021-01-29 | 北京康斯特仪表科技股份有限公司 | Gas pressure control device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050763U (en) * | 1988-12-31 | 1990-01-10 | 邹嘉明 | Dual function electric aspirator without oil |
| JPH05261148A (en) * | 1992-03-19 | 1993-10-12 | Toyobo Co Ltd | Convenient drive device for artificial heart |
| CN1148506A (en) * | 1996-07-26 | 1997-04-30 | 苏州医学院附属儿童医院 | Automatic colon radiography instrument |
| CN2882528Y (en) * | 2006-01-12 | 2007-03-28 | 于刚 | Multifunction sphygmomanometer calibrator |
| US20080066616A1 (en) * | 2006-09-18 | 2008-03-20 | Thomas Sprinkle | Apparatus and method of providing concentrated product gas |
| CN202176499U (en) * | 2011-07-12 | 2012-03-28 | 无锡荣兴科技有限公司 | Device capable of adjusting positive pressure and negative pressure simultaneously |
-
2011
- 2011-07-12 CN CN2011101942980A patent/CN102352873A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050763U (en) * | 1988-12-31 | 1990-01-10 | 邹嘉明 | Dual function electric aspirator without oil |
| JPH05261148A (en) * | 1992-03-19 | 1993-10-12 | Toyobo Co Ltd | Convenient drive device for artificial heart |
| CN1148506A (en) * | 1996-07-26 | 1997-04-30 | 苏州医学院附属儿童医院 | Automatic colon radiography instrument |
| CN2882528Y (en) * | 2006-01-12 | 2007-03-28 | 于刚 | Multifunction sphygmomanometer calibrator |
| US20080066616A1 (en) * | 2006-09-18 | 2008-03-20 | Thomas Sprinkle | Apparatus and method of providing concentrated product gas |
| CN202176499U (en) * | 2011-07-12 | 2012-03-28 | 无锡荣兴科技有限公司 | Device capable of adjusting positive pressure and negative pressure simultaneously |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223976A (en) * | 2015-10-30 | 2016-01-06 | 南通市飞宇石油科技开发有限公司 | A kind of pressure regulation control system |
| CN110741257A (en) * | 2017-06-30 | 2020-01-31 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and driving method thereof |
| CN110741257B (en) * | 2017-06-30 | 2023-10-20 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and driving method thereof |
| CN112286242A (en) * | 2019-07-25 | 2021-01-29 | 北京康斯特仪表科技股份有限公司 | Gas pressure control device |
| CN111790990A (en) * | 2020-07-14 | 2020-10-20 | 博众精工科技股份有限公司 | Laser cutting device |
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Application publication date: 20120215 |