CN203490541U - Indirect measurement type liquid flow control device - Google Patents
Indirect measurement type liquid flow control device Download PDFInfo
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- CN203490541U CN203490541U CN201320649357.3U CN201320649357U CN203490541U CN 203490541 U CN203490541 U CN 203490541U CN 201320649357 U CN201320649357 U CN 201320649357U CN 203490541 U CN203490541 U CN 203490541U
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- indirect measurement
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- liquid flow
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- 239000007788 liquid Substances 0.000 title claims abstract description 88
- 238000005259 measurement Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000005213 imbibition Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 10
- 210000002784 stomach Anatomy 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 210000004767 rumen Anatomy 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Measuring Volume Flow (AREA)
Abstract
The utility model relates to an indirect measurement type air pressure diaphragm flow control device. The liquid flow control device includes a tank body, and an isolation diaphragm, wherein the isolation diaphragm is mounted in the tank body, and separates the tank body into a gas tank and a liquid tank, a gas control interface is made on the gas tank, the gas control interface is connected with a gas pipeline, a liquid inlet and outlet opening is made on the liquid tank, the liquid inlet and outlet opening is connected with a liquid pipeline through a liquid path switching mechanism, liquid discharging and liquid absorbing of the liquid tank are controlled by positive pressure and negative pressure switching, the liquid path switching mechanism of the gas pipeline and the liquid pipeline is controlled by a control unit, the liquid path switching mechanism is fixed at the bottom part of the liquid tank, a weight sensor is fixedly mounted at the bottom part of the liquid path switching mechanism, and the weight sensor is connected with the control unit. The liquid flow control device is reasonable in structure design, good in repeat accuracy, and difficult to be interfered by the external, with which indirect liquid flow control is achieved through using the weigh sensor to weigh the liquid.
Description
Technical field
The utility model relates to liquid measure control device, particularly a kind of indirect measurement formula controller for liquid flow.
Background technology
In the fields such as medical treatment and chemical industry, often need to control liquid measure.Existing liquid measure control device comprises contact and contactless.Contact liquid measure control device, as flow sensor, it requires must, without solid impurity, could realize comparatively accurately and controlling through the liquid in sensor in use.But, when specific works, particularly, when medical field is applied, in the body fluid of the liquid measure of flowing through control device, often can comprise some solid dirts, the accuracy that impact is measured and controlled.Contactless volume control device, as sonac or infrared sensor, it is when work, cannot realize the separated of detected space internal liquid and gas, easily on even popping one's head in detected space, there is water vapor, or have air pocket in liquid, and cause the out of true of measuring and controlling.
For example, for gastric lavage device, it comprises clear water fluid reservoir and dirt fluid reservoir, dirt fluid reservoir, then pumps into the clear water in clear water fluid reservoir in stomach the dirt sucking-off in patient's stomach by stomach tube, and the total amount of liquid that single is drawn and pumped in stomach is to rely on pressure transducer to control, after liquid canful, detected pressure value exceeds setting value, now by control gear, controls reversal valve, completes suction action and dirt is expelled to tank body outside.This kind of pressure transducer control mode, has pressure protecting function, when pressure reaches certain value, no longer aspirates or pumps into, thereby avoiding occurring the excessive damage causing stomach of amount of liquid because aspirating or pumping into.But also there is certain deficiency in it, because stomach tube is thinner, very easily result in blockage, therefore, by pressure, determine suction or the amount of pumping into, out of true very, result of use is not good enough.
In addition, applicant researches and develops a kind of liquid measure control device in earlier stage, and it can be realized according to the individual different functions that set in advance maximum volume, but its control is open loop form, cannot adjust in real time according to actual conditions, and accuracy is controlled in impact.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of indirect measurement formula controller for liquid flow is provided, and it carries out liquid weighing measurement by weight sensor, and then realizes the effect of indirectly controlling fluid flow, there is repeatable accuracy good, be subject to the advantage that ectocine is little.
The utility model solves its technical matters and is achieved through the following technical solutions:
A kind of indirect measurement air pressure barrier film is controlled the device of flow, comprise tank body and barrier film, barrier film is arranged in tank body, tank body isolation is become to gas tank and flow container two parts, on gas tank, be shaped with gas control interface, this gas control interface connects gas piping, on flow container, be shaped with liquid entrance, this liquid entrance connects liquid line by liquid road switching mechanism, by the positive/negative-pressure conversion of gas tank, control discharge opeing and the imbibition of flow container, gas piping and liquid line Ye road switching mechanism are controlled by control module, it is characterized in that: described liquid road switching mechanism is packed in the bottom of flow container, the bottom of Ye road switching mechanism is fixedly mounted with a weight sensor, this weight sensor is connected to described control module.
And, also comprise a volume control gear, this volume control gear consists of adjustment plate, lift drive mechanism and sealing unit, adjustment plate level is arranged in gas tank, the made dish seat of adjustment plate end face is movably arranged on gas tank end face, between the dish seat of adjustment plate end face and gas tank end face, sealing unit is installed; Gas tank top is shaped with support box, on support box top, is fixedly mounted with lift drive mechanism, and the lifting driving stem lower end of this lift drive mechanism is stretched into support box inside and is fixedly mounted with the dish seat of adjustment plate end face, and lift drive mechanism is electrically connected to described control module.
And described sealing unit is grommet type seals.
And, between the end face inside surface of support box and the dish seat upper surface of adjustment plate, the ripple sealing shroud that is set in lifting driving stem outside is installed.
And described lift drive mechanism is linear electric motors.
And, on the top, lifting driving stem top of linear electric motors, one photoelectric sensor being installed, this photoelectric sensor is connected to control module.
And, in the lifting driving stem parallel sided of linear electric motors, grating sensor being installed, this grating sensor is connected to control module.
And described lift drive mechanism is that multiple spot is controlled straight line driving mechanism.
Advantage of the present utility model and beneficial effect are:
1. an indirect measurement formula controller for liquid flow, by weight sensor, realize weighing to tank body, thus when the liquid entrance of flow container commutates, read measured value, this is measured as discontinuous and measures, when measured value hour, be liquid weight hour, the unactual setting value that reaches of liquid measure is described, thus, can adjust imbibition action, increase in proportion imbibition number of times, to meet the requirement to total amount of liquid, this structure goes for dirt fluid reservoir and the clear water fluid reservoir of paunch flusher.
2. an indirect measurement formula controller for liquid flow, can combine with volume control gear, to be applicable to the request for utilization of Different Individual.
3. an indirect measurement formula controller for liquid flow, between gas tank and flow container, adopt barrier film to isolate, liquid enters or discharges from liquid entrance, mutually isolate with upper space, thereby avoid liquid to impact volume control module and air pressure control module, realize the cleaning liquid degree no requirement (NR) in the device of flowing through.
4. an indirect measurement formula controller for liquid flow arranges grommet type seals between adjustment plate upper disc seat and gas tank end face, guarantees that the gaseous tension in upper tank body does not leak, and guarantees running stability and the reliability of pneumoelectric control module; And, ripple sealing shroud is also installed in support box, further improve gas tightness in tank body, also can adapt to the lifting action of lifting driving stem simultaneously, design ingeniously, sealing effectiveness is good.
5. an indirect measurement formula controller for liquid flow, lift drive mechanism can adopt linear electric motors, and it realizes accurate rising and down maneuver by control module; Lift drive mechanism also can adopt multiple spot to control straight line cylinder, also can realize rising or the down maneuver of multi-point under the control of control module, meets request for utilization.
6. an indirect measurement formula controller for liquid flow, when adopting linear electric motors as lift drive mechanism, on its top, lifting driving stem top, one photoelectric sensor is installed, it can realize the setting of lifting driving stem reference position, so that determine reference value, thereby carry out according to actual needs volume adjustment.
7. an indirect measurement formula controller for liquid flow, when adopting linear electric motors as lift drive mechanism, by the parallel sided at its lifting driving stem, grating sensor is installed, can realize the real-time detection to lifting driving stem shift position, realizing closed loop accurately controls, can whether the action of lifting driving stem be put in place and be detected simultaneously, avoid because the adjustment plate height that in tank body, solid matter card is stumbled or equipment failure causes is inaccurate, improve the security that device is used.
8. liquid measure control device of the present utility model, scientific structure design is reasonable, by weight sensor, carry out liquid weighing measurement, and then the effect of fluid flow is controlled in realization indirectly, there is repeatable accuracy good, be subject to the advantage that ectocine is little, have advantages of that control is accurate, easy and simple to handle, applied widely simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the another kind of embodiment of the utility model.
Description of reference numerals:
1-gas control interface, 2-gas tank, 3-barrier film, 4-flow container, 5-weight sensor, 6-liquid entrance, 7-lifting driving stem, 8-linear electric motors, 9-support box end face, 10-support box, 11-ripple sealing shroud, 12-dish seat, 13-grommet type seals, 14-adjustment plate, 15-control module, 16-photoelectric sensor, 17-Ye road switching mechanism, 18-grating sensor.
Embodiment
Below by specific embodiment, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of indirect measurement formula controller for liquid flow, comprise tank body and barrier film 3, barrier film is arranged in tank body, tank body isolation is become to gas tank 2 and flow container 4 two parts, be shaped with gas control interface 1 on gas tank, this gas control interface connects gas piping, on flow container, be shaped with liquid entrance 6, this liquid entrance connects liquid line by liquid road switching mechanism 17, and liquid road switching mechanism applicant crosses patent in first to file, does not repeat them here.Gas piping and liquid line are controlled by control module, by the positive/negative-pressure conversion of gas tank, control discharge opeing and the imbibition of flow container, its innovation is: liquid road switching mechanism is packed in the bottom of flow container, the bottom of Ye road switching mechanism is horizontally installed with a weight sensor 5 by bolt, and this weight sensor is connected to described control module.Gas control interface is arranged on the upper portion side wall of flow container, and liquid entrance is arranged on the centre position, bottom of flow container, thereby makes structure compacter, saves space.Liquid road switching mechanism and the flow container being fixedly mounted with are positioned at one end upper position of weight sensor.Realize high precision, the sensitivity measure of weight sensor.
As shown in Figure 2, can also comprise a volume control gear, this volume control gear consists of adjustment plate 14, lift drive mechanism and sealing unit, adjustment plate level is arranged in gas tank, the made dish seat 12 of adjustment plate end face is movably arranged on gas tank end face, between the dish seat of adjustment plate end face and gas tank end face, sealing unit is installed, sealing unit is grommet type seals 13.Gas tank top is shaped with support box 10, on support box top, is fixedly mounted with lift drive mechanism, and lifting driving stem 7 lower ends of this lift drive mechanism are stretched into support box inside and are fixedly mounted with the dish seat of adjustment plate end face 9, and lift drive mechanism is electrically connected to described control module 15.Between the end face inside surface of support box and the dish seat upper surface of adjustment plate, the ripple sealing shroud 11 that is set in lifting driving stem outside is installed.Lift drive mechanism is linear electric motors 8.Top, lifting driving stem top at linear electric motors is provided with a photoelectric sensor 16, and this photoelectric sensor is connected to control module.Can also grating sensor 18 be installed in the lifting driving stem parallel sided of linear electric motors, this grating sensor is connected to control module.Lift drive mechanism can also be controlled straight line cylinder for multiple spot.
The principle of work of this indirect measurement formula controller for liquid flow is:
By weight sensor, realize the weighing of tank body, when the liquid entrance of flow container commutates, read measured value thus, this is measured as discontinuous and measures, when measured value hour, liquid weight hour, illustrates the unactual setting value that reaches of liquid measure, thus, can adjust imbibition action, increase in proportion imbibition number of times, to meet the requirement to total amount of liquid, combine with volume control gear, to be applicable to the request for utilization of Different Individual.This structure goes for dirt fluid reservoir and the clear water fluid reservoir of paunch flusher, also applicable to liquid, loads in mixture the control of flow.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (8)
1. indirectly measure the device that air pressure barrier film is controlled flow for one kind, comprise tank body and barrier film, barrier film is arranged in tank body, tank body isolation is become to gas tank and flow container two parts, on gas tank, be shaped with gas control interface, this gas control interface connects gas piping, on flow container, be shaped with liquid entrance, this liquid entrance connects liquid line by liquid road switching mechanism, by the positive/negative-pressure conversion of gas tank, control discharge opeing and the imbibition of flow container, gas piping and liquid line Ye road switching mechanism are controlled by control module, it is characterized in that: described liquid road switching mechanism is packed in the bottom of flow container, the bottom of Ye road switching mechanism is fixedly mounted with a weight sensor, this weight sensor is connected to described control module.
2. indirect measurement formula controller for liquid flow according to claim 1, it is characterized in that: also comprise a volume control gear, this volume control gear consists of adjustment plate, lift drive mechanism and sealing unit, adjustment plate level is arranged in gas tank, the made dish seat of adjustment plate end face is movably arranged on gas tank end face, between the dish seat of adjustment plate end face and gas tank end face, sealing unit is installed; Gas tank top is shaped with support box, on support box top, is fixedly mounted with lift drive mechanism, and the lifting driving stem lower end of this lift drive mechanism is stretched into support box inside and is fixedly mounted with the dish seat of adjustment plate end face, and lift drive mechanism is electrically connected to described control module.
3. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: described sealing unit is grommet type seals.
4. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: between the end face inside surface of support box and the dish seat upper surface of adjustment plate, the ripple sealing shroud that is set in lifting driving stem outside is installed.
5. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: described lift drive mechanism is linear electric motors.
6. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: the top, lifting driving stem top at linear electric motors is provided with a photoelectric sensor, and this photoelectric sensor is connected to control module.
7. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: the lifting driving stem parallel sided at linear electric motors is provided with grating sensor, and this grating sensor is connected to control module.
8. indirect measurement formula controller for liquid flow according to claim 1, is characterized in that: described lift drive mechanism is that multiple spot is controlled straight line driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649357.3U CN203490541U (en) | 2013-10-21 | 2013-10-21 | Indirect measurement type liquid flow control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649357.3U CN203490541U (en) | 2013-10-21 | 2013-10-21 | Indirect measurement type liquid flow control device |
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| Publication Number | Publication Date |
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| CN203490541U true CN203490541U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320649357.3U Expired - Lifetime CN203490541U (en) | 2013-10-21 | 2013-10-21 | Indirect measurement type liquid flow control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543758A (en) * | 2013-10-21 | 2014-01-29 | 天津市同业科技发展有限公司 | Device for indirectly measuring and controlling liquid flow |
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2013
- 2013-10-21 CN CN201320649357.3U patent/CN203490541U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543758A (en) * | 2013-10-21 | 2014-01-29 | 天津市同业科技发展有限公司 | Device for indirectly measuring and controlling liquid flow |
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Granted publication date: 20140319 |