CN204649763U - A kind of is the automatic liquid feeder of volumetric flask constant volume - Google Patents

A kind of is the automatic liquid feeder of volumetric flask constant volume Download PDF

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Publication number
CN204649763U
CN204649763U CN201520353628.XU CN201520353628U CN204649763U CN 204649763 U CN204649763 U CN 204649763U CN 201520353628 U CN201520353628 U CN 201520353628U CN 204649763 U CN204649763 U CN 204649763U
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control
volumetric flask
liquid
storage bottle
drain pipe
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CN201520353628.XU
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李帆
杨党纲
丁妍
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BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp
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BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp
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Abstract

The utility model is a kind of automatic liquid feeder, comprise: imageing sensor, display screen, keyboard, control system, stop valve, drain pipe, vacuum pump or peristaltic pump, this device gathers according to imageing sensor the position that image brightness values or value of chromatism identify scale mark on volumetric flask and added liquid levels, automatic liquid feeding body is accurately controlled by control system, when two positions overlap, stop liquid feeding.The utility model device, by the programmed control of control system, realizes automatic liquid feeding body, simple to operate, reliable, degree of accuracy is high, speed is fast, saved production cost.

Description

A kind of is the automatic liquid feeder of volumetric flask constant volume
Technical field
The utility model is a kind of automatic liquid feeder for volumetric flask constant volume, belongs to the technical field of chemical analysis and quantitative test.
Background technology
Automatic liquid feeder for volumetric flask constant volume is automatically a kind of, contactless, can realize the device of automatic liquid feeding body accurately, for automatically adding various liquid in Realization analysis test.In the chemical analysis of routine, be conventional step to volumetric flask constant volume, but this liquid feeding process of volumetric flask constant volume still need by operating personnel's manual operations at present, and manual operations is loaded down with trivial details, work efficiency is also lower, when more by the quantity of liquid feeding, waste time and energy especially, easily make mistakes.Along with the acceleration of modernization, the accuracy of analyzing test data, ageing more and more higher, traditional liquid feeding means have been difficult to meet current demand, and this just needs a kind of automatic liquid feeder that can adapt to the requirement of modernization chemical analysis.
Summary of the invention
The utility model designs for the deficiency existed in above-mentioned existing apparatus just and provides a kind of automatic liquid feeder, its objective is and provide a kind of simple to operate, degree of accuracy is high, speed is fast and the automatic liquid feeder of good stability, the automatic liquid-feeding system in quantitative test can be widely used in, solve the subject matter that prior art exists, save liquid raw material, increase work efficiency, and the on-line monitoring of Realization analysis instrument and meter.
The purpose of this utility model is achieved through the following technical solutions:
This kind is the automatic liquid feeder of volumetric flask constant volume, this device comprises display screen 2, keyboard 3, it is characterized in that: the bottom of volumetric flask 11 is placed a colour brightness and highlighted device 16, it can be a colored pad that this colour brightness highlights device 16, also can be color or the lamp without color, it is the liquid outlet 10 of one end of drain pipe 7 above volumetric flask 11, drain pipe 7 is arranged a stop valve 6, the other end of drain pipe 7 to insert in liquid storage bottle 9 and is positioned at below liquid level, below the frame mode of drain pipe 7 fluid from liquid storage bottle 9 adopts one of two kinds:
1.1 also insert a draft tube 8 in liquid storage bottle 9, and one end of draft tube 8 is positioned at the cavity of liquid storage bottle 9, and the other end is connected with exhaust gear, and exhaust gear is connected with control system 4, the bottle sealing of liquid storage bottle 9; Control system 4 comprises a single-chip microcomputer be programmed, and control system 4 and above-mentioned coupling assembling realize message exchange, and control stop valve 6 and exhaust gear.
An imageing sensor 17 is set in the side of volumetric flask 11 and aims at scale mark on volumetric flask 11, imageing sensor 17 is connected with control system 4, imageing sensor 17 gathers image according to brightness value and/or value of chromatism, added liquid levels position in volumetric flask 11 scale mark position and volumetric flask is gone out by image recognition, when both overlap, control system 4 output feedback signal controls the folding of stop valve 6 and the action of exhaust gear, realizes the automatic liquid-feeding process to volumetric flask 11; The speed of the discrepancy adjustment exhaust gear of added liquid levels position in the volumetric flask 11 scale mark position that control system 4 can go out according to image recognition and volumetric flask, to reach the object more accurately adding liquid.
1.2 arrange a water pumping mechanism on drain pipe 7, and water pumping mechanism is connected with control system 4, and control system 4 also can control the rotating speed of water pumping mechanism; Control system 4 comprises a single-chip microcomputer be programmed, and control system 4 and above-mentioned coupling assembling realize message exchange, and control stop valve 6 and water pumping mechanism.An imageing sensor 17 is set in the side of volumetric flask 11 and aims at scale mark on volumetric flask 11, imageing sensor 17 is connected with control system 4, imageing sensor 17 gathers image according to brightness value and/or value of chromatism, added liquid levels position in volumetric flask 11 scale mark position and volumetric flask is gone out by image recognition, when both overlap, control system 4 output feedback signal controls the folding of stop valve 6 and the action of water pumping mechanism, realizes the automatic liquid-feeding process to volumetric flask 11; The speed of the discrepancy adjustment water pumping mechanism of added liquid levels position in the volumetric flask 11 scale mark position that control system 4 can go out according to image recognition and volumetric flask, to reach the object more accurately adding liquid.
Display screen 2 and keyboard 3 can be touch-screen form structure.
Arrange the liquid level sensor 13 for detecting liquid level in liquid storage bottle 9 at the bottle mouth position of liquid storage bottle 9, liquid level sensor 13 is connected with control system 4.
Drain pipe 7 can arrange flowmeter 14, and flowmeter 14 is connected with control system 4.
Control system 4 according to the alternate position spike of volumetric flask 11 scale mark and liquid level, the rotating speed of adjustment drainage mechanism or water pumping mechanism.When difference is larger, increases the rotating speed of drainage mechanism or water pumping mechanism, liquid feeding speed is accelerated; Otherwise, when difference is less, reduces the rotating speed of drainage mechanism or water pumping mechanism, liquid feeding slowed.
General volumetric flask is water white, not obvious on the image that after adding liquid, the color of liquid level obtains at imageing sensor 17, not easily judge real-time liquid level in volumetric flask, therefore a colour brightness is set bottom volumetric flask and highlights device 16, to strengthen brightness or the color of liquid level in the image that imageing sensor 17 obtains, it can be coloured pad that this colour brightness highlights device 16, may also be coloured lamp, or not having coloured lamp, the image be convenient to imageing sensor 17 obtains identifies.
Volumetric flask 11 is placed on colour brightness and highlights on device 16 by the utility model device in use; Drainage mechanism injects air by draft tube 8 in liquid storage bottle 9 makes liquid storage bottle 9 discharge liquid, or liquid is extracted out by water pumping mechanism from liquid storage bottle 9, and this liquid is injected in volumetric flask 11 or in liquid storage bottle 9 by drain pipe 7; Imageing sensor 17 carries out image acquisition to the volumetric flask in liquid feeding in real time according to brightness value or value of chromatism, and by image transmitting to control system 4, control system 4 uses added liquid levels position in image recognition algorithm identification volumetric flask scale mark position and volumetric flask; When both overlap, control system 4 output feedback signal controls stop valve 6 and drainage mechanism or water pumping mechanism and quits work at once, realizes automatic liquid-feeding.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device by vacuum pump liquid feeding
Fig. 2 is the another kind of structural representation of the utility model device by peristaltic pump liquid feeding
Fig. 3 is the process flow diagram of the control programming of control system in the utility model device
Embodiment
Below with reference to drawings and Examples, the utility model device is further described.
Embodiment one:
As shown in Figure 1 be the automatic liquid feeder of volumetric flask constant volume, comprise display screen 2, keyboard 3, display screen 2 and keyboard 3 are touch-screen form structure, the pad 16 of a red color is placed in the bottom of volumetric flask 11, it is the liquid outlet 10 of one end of drain pipe 7 above volumetric flask 11, drain pipe 7 is arranged a stop valve 6, the other end of drain pipe 7 to insert in liquid storage bottle 9 and is positioned at below liquid level, a draft tube 8 is also inserted in liquid storage bottle 9, one end of draft tube 8 is positioned at the cavity of liquid storage bottle 9, the other end is connected with vacuum pump 5, vacuum pump 5 is connected with control system 4, the bottle sealing of liquid storage bottle 9,
Arrange the liquid level sensor 13 for detecting liquid level in liquid storage bottle 9 at the bottle mouth position of liquid storage bottle 9, liquid level sensor 13 is connected with control system 4;
An imageing sensor 17 is set in the side of volumetric flask 11 and aims at scale mark on volumetric flask 11, imageing sensor 17 is connected with control system 4, imageing sensor 17 gathers image according to brightness value and/or value of chromatism, added liquid levels position in volumetric flask 11 scale mark position and volumetric flask is gone out by image recognition, when both overlap, control system 4 output feedback signal controls the folding of stop valve 6 and the action of vacuum pump 5 and rotating speed, thus realizes the automatic liquid-feeding process to volumetric flask 11;
Control system 4 comprises a single-chip microcomputer be programmed, and control system 4 and above-mentioned coupling assembling realize message exchange.
Shown in accompanying drawing 3, to control the course of work of the utility model device in the single-chip microcomputer that the control flow of control system 4 is stored in control system 4, the course of work of the utility model device is as follows:
Be placed on colored pad 16 by volumetric flask 11, vacuum pump 5 injects air by draft tube 8 in liquid storage bottle 9, and liquid is injected in volumetric flask 11 by drain pipe 7; Imageing sensor 17 gathers image according to brightness value and/or value of chromatism, uses added liquid levels position in image recognition algorithm identification volumetric flask scale mark position and volumetric flask; Control system 4 compares according to scale mark position and liquid level position, regulates the rotating speed of vacuum pump 5; The two position difference is larger, and rotating speed is faster; Difference is less, and rotating speed is slower, and when both overlap, vacuum pump 5 can quit work at once, closes stop valve 6 simultaneously; Now flowmeter 14 also can show the flow value by its liquid, to realize automatic liquid-feeding more accurately.
Embodiment two:
As shown in Figure 2 be the automatic liquid feeder of volumetric flask constant volume, this device comprises display screen 2, keyboard 3, the bottom of volumetric flask 11 arranges a blue LED 16, liquid outlets 10 of one end of drain pipe 7 in the vertical direction of volumetric flask 11, drain pipe 7 is arranged a stop valve 6, drain pipe 7 also arranges flowmeter 14, flowmeter 14 is connected with control system 4, the other end of drain pipe 7 to insert in liquid storage bottle 9 and is positioned at below liquid level, drain pipe 7 arranges one for controlling the peristaltic pump 12 of liquid volume added, peristaltic pump 12 is connected with control system 4, control system 4 also can control the rotating speed of peristaltic pump 12, control system 4 comprises a single-chip microcomputer be programmed, and control system 4 and above-mentioned coupling assembling realize message exchange.
Arrange the liquid level sensor 13 for detecting liquid level in liquid storage bottle 9 at the bottle mouth position of liquid storage bottle 9, liquid level sensor 13 is connected with control system 4;
An imageing sensor 17 is set in the side of volumetric flask 11 and aims at scale mark on volumetric flask 11, imageing sensor 17 is connected with control system 4, imageing sensor 17 gathers image according to brightness value or value of chromatism, added liquid levels position in volumetric flask 11 scale mark position and volumetric flask is gone out by image recognition, when both overlap, control system 4 output feedback signal controls the folding of stop valve 6 and the action of peristaltic pump 12 and rotating speed, thus realizes the automatic liquid-feeding process to volumetric flask 11;
Shown in accompanying drawing 3, to control the course of work of the utility model device in the single-chip microcomputer that the control flow of this control system 4 is stored in control system 4, the course of work of the utility model device is as follows:
First carry out device initialization in use, make each parts of the utility model device be in normal operating conditions.To arrange a blue led lamp 16 below volumetric flask 11, in liquid storage bottle 9, liquid is injected into volumetric flask 11 in by flowmeter 14, stop valve 6 with liquid outlet 10 through peristaltic pump 12 by drain pipe 7; Imageing sensor 17 gathers image according to brightness value or value of chromatism, uses added liquid levels position in image recognition algorithm identification volumetric flask scale mark position and volumetric flask; Control system 4 compares according to scale mark position and liquid level position, regulates the rotating speed of peristaltic pump 12; Difference is larger, and rotating speed is faster; Otherwise difference is less, rotating speed is slower, and when both overlap, peristaltic pump 12 can quit work at once, closes stop valve 6 simultaneously; Now flowmeter 14 also can show the flow value by its liquid, to realize automatic liquid-feeding more accurately.

Claims (7)

1. one kind is the automatic liquid feeder of volumetric flask constant volume, it is characterized in that: the bottom of volumetric flask (11) is placed a colour brightness and highlighted device (16), it is the liquid outlet (10) of one end of drain pipe (7) in the top of volumetric flask (11), drain pipe (7) end arranges a stop valve (6), the other end of drain pipe (7) to insert in liquid storage bottle (9) and is positioned at below liquid level, below the frame mode employing of drain pipe (7) fluid from liquid storage bottle (9) one of two kinds:
1.1 also insert a draft tube (8) in liquid storage bottle (9), one end of draft tube (8) is positioned at the cavity of liquid storage bottle (9), the other end is connected with exhaust gear, exhaust gear is connected with control system (4), the bottle sealing of liquid storage bottle (9);
1.2 arrange a water pumping mechanism on drain pipe (7), and water pumping mechanism is connected with control system (4);
In the side of volumetric flask (11), the scale mark on an imageing sensor (17) aligning volumetric flask (11) is set, imageing sensor (17) is connected with control system (4), imageing sensor (17) gathers image according to brightness value and/or value of chromatism, added liquid levels position in volumetric flask (11) scale mark position and volumetric flask is gone out by image recognition, when both overlap, control system (4) output feedback signal controls the folding of stop valve (6) and the action of water pumping mechanism or exhaust gear, realize the automatic liquid-feeding process to volumetric flask (11),
Control system (4) comprises a single-chip microcomputer be programmed, and control system (4) and above-mentioned coupling assembling realize message exchange, and controls stop valve (6) and water pumping mechanism or exhaust gear.
2. automatic liquid feeder according to claim 1, is characterized in that: be provided with the device controlling water pumping mechanism or exhaust gear speed in control system (4).
3. automatic liquid feeder according to claim 1, is characterized in that: colour brightness highlights device (16) for colored pad.
4. automatic liquid feeder according to claim 1, is characterized in that: it is lamp with/without color that colour brightness highlights device (16).
5. automatic liquid feeder according to claim 1, it is characterized in that: arrange the liquid level sensor (13) for detecting liquid level in liquid storage bottle (9) at the bottle mouth position of liquid storage bottle (9), liquid level sensor (13) is connected with control system (4).
6. automatic liquid feeder according to claim 1, is characterized in that: on drain pipe (7), arrange flowmeter (14), and flowmeter (14) is connected with control system (4).
7. automatic liquid feeder according to claim 1, is characterized in that: described imageing sensor (17) is digital camera.
CN201520353628.XU 2014-10-16 2015-05-27 A kind of is the automatic liquid feeder of volumetric flask constant volume Active CN204649763U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201420596360 2014-10-16
CN2014205963608 2014-10-16
CN201520353628.XU CN204649763U (en) 2014-10-16 2015-05-27 A kind of is the automatic liquid feeder of volumetric flask constant volume

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105607661A (en) * 2015-12-21 2016-05-25 南宁学院 Liquid level control system based on image identification
CN109173916A (en) * 2018-11-05 2019-01-11 刘子潇 A kind of automation timing liquid-adding device
CN109632426A (en) * 2019-01-14 2019-04-16 中国科学院合肥物质科学研究院 A kind of automation soil pretreating device
CN112000155A (en) * 2020-07-21 2020-11-27 中国民航大学 Liquid filling control method, device and system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105607661A (en) * 2015-12-21 2016-05-25 南宁学院 Liquid level control system based on image identification
CN109173916A (en) * 2018-11-05 2019-01-11 刘子潇 A kind of automation timing liquid-adding device
CN109632426A (en) * 2019-01-14 2019-04-16 中国科学院合肥物质科学研究院 A kind of automation soil pretreating device
CN112000155A (en) * 2020-07-21 2020-11-27 中国民航大学 Liquid filling control method, device and system

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