CN109793950A - A kind of aspirator negative pressure Automatic adjustment method and system - Google Patents
A kind of aspirator negative pressure Automatic adjustment method and system Download PDFInfo
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- CN109793950A CN109793950A CN201910243402.7A CN201910243402A CN109793950A CN 109793950 A CN109793950 A CN 109793950A CN 201910243402 A CN201910243402 A CN 201910243402A CN 109793950 A CN109793950 A CN 109793950A
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Abstract
The invention discloses a kind of aspirator negative pressure Automatic adjustment methods, this method comprises: negative pressure preset value is arranged and presets the stable gas pressure accuracy rating of the negative pressure preset value；Excitation adjusts sign on, detects the actual suction pressure value in negative pressure air flue；Judge that actual suction pressure value whether in the stable gas pressure accuracy rating of negative pressure preset value, does not adjust if in range, the opening degree of valve is controlled to adjust if going beyond the scope.The invention also discloses a kind of aspirator automatic negative pressure adjusting systems.The present invention compares negative pressure value by control device real-time monitoring, stablizes it in values in this, as feedback automatic adjustment negative pressure value.In the present invention, the mode for adjusting air pressure is not to control the mode of motor speed of negative pressure source to be adjusted, but work with constant rotational speed, is the negative pressure adjusted in air flue by the opening degree of gas bleeder valve, keeps the design of control circuit simpler.
Description
Technical field
The present invention relates to the regulation and controls that aspirator or sputum aspirator etc. attract the negative pressure of class instrument, more particularly to one kind
Aspirator negative pressure Automatic adjustment method and system.
Background technique
With the development of medical science and technology, vacuum extractor use occasion is also increasingly wider.However the pressure regulation of aspirator at present
Main implementation has following several: (1) gas bleeder valve that negative pressure pump collocation manually adjusts realizes pressure regulation；(2) negative pressure pump collocation valve
Door switch realizes that the stepping of negative pressure is adjusted to realize that multi-channel switch combines；(3) negative pressure pump realizes that negative pressure is adjusted by speed regulation.
Above scheme is all to first pass through to adjust gas bleeder valve or adjust motor speed and then pass through air gauge etc. to show equipment
Actual negative pressure value is observed, requires manual confirmation when adjusting pressure every time, and in use due to machine shake etc.
It influences, must notice at any time whether pressure deviates preset value.Although adjusting negative pressure in addition, adjusting motor speed and also can achieve
Purpose, but realize the circuit design of electric machine speed regulation and control relatively very complicated.And the above control mode is when negative pressure is lower
The fluctuation of air pressure can be larger, can not effectively generate constant negative pressure, and then will affect using effect.
Summary of the invention
In order to overcome shortcoming and deficiency existing in the prior art, the purpose of the present invention is to provide a kind of aspirator negative pressure
Automatic adjustment method compares negative pressure value by control device real-time monitoring, makes it in this, as feedback automatic adjustment negative pressure value
Stablize in values.
The object of the invention is also to provide a kind of aspirator automatic negative pressure adjusting systems.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of aspirator negative pressure Automatic adjustment method, which is characterized in that the described method includes:
Negative pressure preset value is set and presets the stable gas pressure accuracy rating of the negative pressure preset value；
Excitation adjusts sign on, detects the actual suction pressure value in negative pressure air flue；
Judge that actual suction pressure value whether in the stable gas pressure accuracy rating of negative pressure preset value, is not done if in range
It adjusts, the opening degree of valve is controlled to adjust if going beyond the scope.
Further, if actual suction pressure value is less than the minimum value of the stable gas pressure accuracy rating, control turns down valve
The aperture of door, makes negative pressure rise to preset value as early as possible；If actual suction pressure value is greater than the maximum of the stable gas pressure accuracy rating
Value, then the aperture of big valve is opened in control, and negative pressure value is made to be reduced to preset value as early as possible；If it is steady that actual suction pressure value is in the air pressure
Determine in accuracy rating, does not then need the aperture of valve.
Further, the stable gas pressure accuracy rating is the negative pressure preset value ± (0.5~10) kpa.
Further, the excitation adjusts sign on: the aspirator starting work starts to detect actual suction pressure value.
Further, the range of the opening degree of the valve is 0~100%.
Further, the Automatic adjustment method, which can quickly be adjusted actual suction pressure value, arrives the stable gas pressure accuracy rating
Interior, possible machine breakdown just exports alarm signal immediately if long-time is not adjusted in the stable gas pressure accuracy rating
Number.
A kind of aspirator automatic negative pressure adjusting system, the system comprises:
Pressure test device detects the actual suction pressure value in negative pressure air flue；
Adjustment mechanism for valve receives the order of control device and the opening degree of control valve；
Control device is communicated to connect with the pressure test device and adjustment mechanism for valve respectively, is examined in real time from air pressure
It surveys device and obtains current actual pressure value, and compared with the stable gas pressure accuracy rating of the negative pressure preset value of the system
Compared with, accordingly generate instruction control valve regulating device；
Input unit completes user and presets negative pressure preset value on aspirator, and input unit and the control device are logical
Letter connection.
Further, the pressure test device is pressure sensor；The control device is single-chip microcontroller；The system
It further include display device, real-time display atmospheric pressure value, display device and the control device communicate to connect.
Further, the display device and input unit can be integrally disposed on the control device.
Further, the adjustment mechanism for valve is electronically controlled proportional valve door or motor-driven machinery in conjunction with valve
Valve；The adjustment mechanism for valve is set as automatically controlled mode comprising motor, pressure regulation stator valve and pressure regulation valve rotor, motor lower section
It is fixedly connected with pressure regulation valve rotor and drives its rotation, the inner hollow design of pressure regulation valve rotor, the side wall of pressure regulation valve rotor is equipped with
Via hole, the bottom of pressure regulation valve rotor are equipped with gas outlet, and gas outlet and the via hole are interconnected；Pressure regulator valve rotor exterior is arranged with
The pressure regulation stator valve is integrally formed ground protrusion on pressure regulation stator valve and is equipped with hollow branch pipe；When motor turns with pressure regulation valve rotor
When dynamic, the line portals of the via hole and hollow branch pipe are completely coincident adjustment mechanism for valve full open position described in Shi Zewei, this
When can achieve the minimum negative pressure of the system；It is reached when the line portals of hollow branch pipe are blocked completely by the side wall of pressure regulation valve rotor
To the highest negative pressure of the system.
The present invention detects actual suction pressure by control device automatically and sets the difference between negative pressure, realizes negative pressure automatically
Closed loop adjusting control function.Method provided by the invention may be implemented to carry out step-less adjustment (electrodeless adjustment herein to negative pressure value
It is negative pressure to be adjusted by way of control valve opening degree, in entire negative pressure in order to which the mode adjusted with certain stepping positions is distinguished
Negative pressure value can be continuously adjusted in adjustable range, be not in discontinuous situation as stepping is adjusted, and be that machine is automatic
Adjusting degree of regulation can be more accurate more controllable than manually adjusting).
The device have the advantages that as follows:
(1) the negative pressure source work that this air pressure adjustment method can arrange in pairs or groups different, the maximum that different negative pressure sources can achieve
Negative pressure is different, therefore the range that negative pressure value is the peak suction value generated from 0 to different negative pressure sources can be set in this adjusting method
Interior, i.e., any negative pressure of the negative pressure value within the scope of the peak suction value that machine can reach can be set in the present invention.
(2) present invention can realize adjustment by real-time detection negative pressure value and automatically, make negative regulation setting value without
Need manual intervention.
(3) present invention does not realize pressure regulation by the adjusting of negative pressure pump, is realized by automatic adjustment air-outlet valve, letter
Change circuit design, improves reliability.
Detailed description of the invention
Fig. 1 is the method for the present invention flow diagram；
Fig. 2 is the structural schematic diagram of automatic regulating system of the present invention；
Fig. 3 is the schematic diagram of adjustment mechanism for valve: (a) cross-sectional view；(b) perspective view；
Wherein, 1- input unit, 2- data presentation device, 3- control device, 4- negative pressure pump, 5- pressure test device,
6- adjustment mechanism for valve, 7- negative pressure pump steam inlet, 8- liquid storage bottle air entry, 9- liquid storage bottle inlet；A- motor, B- pressure regulator valve are fixed
Son, C- pressure regulation valve rotor, D- shaft, E- via hole, F- branch pipe, the gas outlet G-.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Referring to figs. 1 to shown in Fig. 3, the aspirator automatic negative pressure adjusting system of the present embodiment mainly includes pressure test device
5, control device 3, adjustment mechanism for valve 6, data presentation device 2 and input unit 1, each device are specific as follows:
Pressure test device 5: the device can be various pressure sensors, be mounted in negative pressure air flue, for examining in real time
Atmospheric pressure value is surveyed, can accurately measure the actual pressure value of aspirator in this position.
Control device 3: the device can be the digital processing systems such as single-chip microcontroller either pure hardware circuit, control device
3 with air pressure detection fill 5 set with adjustment mechanism for valve 6 communicate to connect, current actual pressure is obtained from pressure test device 5 in real time
Value, and it is compared acquisition difference data with preset pressure value, instruction, control valve are sent to adjustment mechanism for valve 6 accordingly
Adjust the opening degree of 6 device control valves.
Adjustment mechanism for valve 6, specifically see Fig. 3, the executing agency of this automatic adjustment scheme is set as automatically controlled mode, electricity
It is fixedly connected with pressure regulation valve rotor C below machine A and drives internal pressure regulation valve rotor C rotation, the inner hollow of pressure regulation valve rotor C is set
A via hole E is arranged in the side of meter, pressure regulation valve rotor C；Pressure regulation valve rotor C outer cover is equipped with pressure regulation stator valve B (pressure regulation stator valve
The branch pipe F (hollow design) being arranged sidewards on B and pressure regulation stator valve B, which is integrally formed, to be covered except pressure regulation valve rotor C, branch pipe F
Hollow design)；A gas outlet G is arranged in the pressure regulation bottom valve rotor C, this gas outlet G is connected to the via hole E of rotating shaft D side.Work as electricity
When machine A is rotated with pressure regulation valve rotor C, the line portals of via hole E and branch pipe F are completely coincident Shi Zewei full open position, at this time
The minimum negative pressure that can achieve system, the highest that system is reached when the line portals of branch pipe F are blocked completely by the sub- wall of rotating shaft D are born
Pressure.
The adjusting of valve opening degree is realized in the order that adjustment mechanism for valve 6 receives control device 3, can be automatically controlled ratio
Valve or motor-driven machinery valve.
Input unit 1 can be key, touch screen or other communication interfaces etc., realize user will set negative pressure value and
Control accuracy rating input.
Data presentation device 2, the device are the information display devices such as real-time atmospheric pressure value.
Data presentation device 2 and input unit 1 respectively with 3 connection communication of control device, in addition, data presentation device 2
It can integrate on control device 3 with input unit 1.
It is additionally provided with the air inlet 7 of negative pressure pump 4 and negative pressure pump in Fig. 2, the air entry 8 and liquid storage bottle inlet 9 of liquid storage bottle,
Above-mentioned is the traditional structure of sputum aspirator, and details are not described herein again.
This system does not need to control negative pressure gas source, and negative pressure generates equipment and only needs to open work.This system
Regulatory function be by control air flue in air-outlet valve (adjustment mechanism for valve) controlled, when air-outlet valve aperture is bigger
Then negative pressure is lower in air flue, and negative pressure is higher in the smaller then air flue of aperture, and when gas bleeder valve completely closes, negative pressure value be can achieve
Negative pressure maximum value.
Shown in referring to Fig.1, the aspirator negative pressure Automatic adjustment method of the present embodiment specifically comprises the following steps:
Firstly, user presets the work negative pressure value and preset pressure lasting accuracy range of aspirator by input unit 1；
Secondly, excitation adjusts sign on, pressure test device 5 is completed the detection to actual pressure value in aspirator and (is inhaled
Lead device starting work starts to detect actual suction pressure value)；
Then, control device 3 obtains current negative pressure value in real time from pressure test device 5, and with default negative pressure value
Stable gas pressure accuracy rating be compared, and to adjustment mechanism for valve 6 send instruction, realize valve opening degree adjusting.
If current negative pressure value is less than setting negative pressure value (minimum value of stable gas pressure accuracy rating), control valve is adjusted
Device 6 turns down valve opening, and negative pressure is made to rise to setting value as early as possible；
If current negative pressure value is greater than setting negative pressure value (maximum value of stable gas pressure accuracy rating), control valve is adjusted
Device 6 opens big valve opening, and negative pressure value is made to be reduced to setting value as early as possible.
If current negative pressure value does not need to be adjusted in stable gas pressure accuracy rating.
The range of the opening degree of valve is 0~100%.
Preferably, stable gas pressure accuracy rating is negative pressure preset value ± (0.5~10) kpa, and accuracy rating can customize
Setting.
By above adjusting control flow, the stabilization of aspirator negative pressure value can be maintained, is allowed to attached in default negative pressure value
Fluctuation in nearly range, this range can be configured (as preset pressure lasting accuracy range) according to data input device 2.
The Automatic adjustment method of the present embodiment can quickly be adjusted actual suction pressure value into stable gas pressure accuracy rating, if
It is not adjusted in stable gas pressure accuracy rating then possible machine breakdown for a long time and just exports alarm signal immediately, time range is
0~200 second, time range can customize setting.
Such as it is ± 0.5kpa that degree of regulation, which can be set, preset atmospheric pressure value actually detected is at this time arrived in 80kpa
When negative pressure value is less than 79.5kpa or is greater than 80.5kpa, then control valve can be automatically begun to, if in 79.5~80.5kpa
Range (i.e. in stable gas pressure accuracy rating) in do not need control valve then (degree of regulation range and default negative pressure value pass through defeated
Enter device 1 to be inputted).
The foregoing is merely preference embodiments of the invention, are not intended to limit the scope of the present invention..Appoint
How within the spirit and principles in the present invention made any modifications, equivalent replacements, and improvements etc., should be included in of the invention
Within claims.
Claims (10)
1. a kind of aspirator negative pressure Automatic adjustment method, which is characterized in that the described method includes:
Negative pressure preset value is set and presets the stable gas pressure accuracy rating of the negative pressure preset value；
Excitation adjusts sign on, detects the actual suction pressure value in negative pressure air flue；
Judge that actual suction pressure value whether in the stable gas pressure accuracy rating of negative pressure preset value, is not adjusted if in range
Section, controls to adjust the opening degree of valve if going beyond the scope.
2. a kind of aspirator negative pressure Automatic adjustment method as described in claim 1, which is characterized in that if actual suction pressure value is small
In the minimum value of the stable gas pressure accuracy rating, then control turns down the aperture of valve, and negative pressure is made to rise to preset value as early as possible；
If actual suction pressure value is greater than the maximum value of the stable gas pressure accuracy rating, control opens the aperture of big valve, makes to bear
Pressure value is reduced to preset value as early as possible；
If actual suction pressure value is in the stable gas pressure accuracy rating, the aperture of valve is not needed.
3. a kind of aspirator negative pressure Automatic adjustment method as claimed in claim 1 or 2, which is characterized in that the stable gas pressure
Accuracy rating is the negative pressure preset value ± (0.5~10) kpa.
4. a kind of aspirator negative pressure Automatic adjustment method as claimed in claim 1 or 2, which is characterized in that the excitation is adjusted
Sign on: the aspirator starting work starts to detect actual suction pressure value.
5. a kind of aspirator negative pressure Automatic adjustment method as claimed in claim 1 or 2, which is characterized in that the valve is opened
Right range is 0~100%.
6. a kind of aspirator negative pressure Automatic adjustment method as claimed in claim 1 or 2, which is characterized in that the method can incite somebody to action
Actual suction pressure value is quickly adjusted into the stable gas pressure accuracy rating, if not being adjusted to the stable gas pressure essence for a long time
Then possible machine breakdown just exports alarm signal immediately in degree range.
7. a kind of aspirator automatic negative pressure adjusting system, which is characterized in that the system comprises:
Pressure test device detects the actual suction pressure value in negative pressure air flue；
Adjustment mechanism for valve receives the order of control device and the opening degree of control valve；
Control device is communicated to connect with the pressure test device and adjustment mechanism for valve respectively, detects fill from air pressure in real time
It sets and obtains current actual pressure value, and be compared with the stable gas pressure accuracy rating of the negative pressure preset value of the system,
Accordingly generate instruction control valve regulating device；
Input unit completes user and presets negative pressure preset value, input unit and the control device communication link on aspirator
It connects.
8. a kind of aspirator automatic negative pressure adjusting system as claimed in claim 7, which is characterized in that the pressure test device
For pressure sensor；The control device is single-chip microcontroller；
The system also includes display device, real-time display atmospheric pressure value, display device and the control device are communicated to connect.
9. a kind of aspirator automatic negative pressure adjusting system as claimed in claim 8, which is characterized in that the display device and defeated
Entering device can be integrally disposed on the control device.
10. a kind of aspirator automatic negative pressure adjusting system as claimed in claim 7 or 8, which is characterized in that the valve regulated
Device is electronically controlled proportional valve door or motor-driven machinery valve in conjunction with valve；
The adjustment mechanism for valve is set as automatically controlled mode comprising motor, pressure regulation stator valve and pressure regulation valve rotor, motor lower section are solid
Surely it connects pressure regulation valve rotor and drives its rotation, the inner hollow design of pressure regulation valve rotor, the side wall of pressure regulation valve rotor was equipped with
Hole, the bottom of pressure regulation valve rotor are equipped with gas outlet, and gas outlet and the via hole are interconnected；Pressure regulator valve rotor exterior is arranged
Pressure regulation stator valve is stated, ground protrusion is integrally formed on pressure regulation stator valve and is equipped with hollow branch pipe；When motor is rotated with pressure regulation valve rotor
When, the line portals of the via hole and hollow branch pipe are completely coincident adjustment mechanism for valve full open position described in Shi Zewei, at this time
It can achieve the minimum negative pressure of the system；Reach when the line portals of hollow branch pipe are blocked completely by the side wall of pressure regulation valve rotor
The highest negative pressure of the system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910243402.7A CN109793950A (en) | 2019-03-28 | 2019-03-28 | A kind of aspirator negative pressure Automatic adjustment method and system |
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| CN201910243402.7A CN109793950A (en) | 2019-03-28 | 2019-03-28 | A kind of aspirator negative pressure Automatic adjustment method and system |
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| CN201910243402.7A Pending CN109793950A (en) | 2019-03-28 | 2019-03-28 | A kind of aspirator negative pressure Automatic adjustment method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111771947A (en) * | 2020-08-10 | 2020-10-16 | 青岛齐林智信自控技术有限公司 | Casing air return pressure regulating method and device |
| CN111840671A (en) * | 2020-07-27 | 2020-10-30 | 重庆佑佑宝贝妇儿医院有限公司 | Automatic negative pressure regulator and sputum aspirator |
| CN114060249A (en) * | 2021-11-11 | 2022-02-18 | 广州润虹医药科技股份有限公司 | Air channel structure of medical negative pressure machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111840671A (en) * | 2020-07-27 | 2020-10-30 | 重庆佑佑宝贝妇儿医院有限公司 | Automatic negative pressure regulator and sputum aspirator |
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| CN114060249B (en) * | 2021-11-11 | 2023-05-02 | 广州润虹医药科技股份有限公司 | Medical negative pressure machine gas circuit structure |
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