CN211349114U - Chemical fluid's flow control device and laboratory paraphernalia - Google Patents
Chemical fluid's flow control device and laboratory paraphernalia Download PDFInfo
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- CN211349114U CN211349114U CN202020350896.7U CN202020350896U CN211349114U CN 211349114 U CN211349114 U CN 211349114U CN 202020350896 U CN202020350896 U CN 202020350896U CN 211349114 U CN211349114 U CN 211349114U
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- 238000005086 pumping Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000009566 Mao-to Substances 0.000 description 1
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Abstract
The utility model discloses a flow control device and laboratory paraphernalia of chemical fluidum relates to the flow control field, and wherein, a flow control device of chemical fluidum, include: a fluid line; one end of the fluid pipeline is connected with the liquid storage tank, the other end of the fluid pipeline is a fluid outlet, an electromagnetic valve and a flow sensor are arranged on the fluid pipeline, the control end of the electromagnetic valve is connected with the output end of the controller, the flow sensor is connected with the input end of the controller, and the controller is also connected with the human-computer interaction unit; the flow sensor is used for detecting the flow of the fluid outlet; the human-computer interaction unit is used for inputting set flow and displaying the flow of the fluid outlet; and the controller is used for controlling the opening or closing of the electromagnetic valve according to the flow of the fluid outlet and the set flow. The problem that a large amount of quantitative chemical media are difficult to directly obtain in a laboratory at present is solved.
Description
Technical Field
The utility model relates to a flow control field, a flow control device and laboratory paraphernalia of chemistry fluidum specifically says so.
Background
In the experiment, a quantitative chemical medium is often needed, and a small amount of chemical medium is often obtained only by a quantitative dropper, but if a large amount of quantitative chemical medium, especially a quantitative chemical medium with high risk, is directly obtained, the quantitative chemical medium is often difficult to obtain, and if 1L of concentrated sulfuric acid is needed as a chemical reagent, the concentrated sulfuric acid is not suitable to be obtained through multiple operations, so that the risk caused by the multiple operations is avoided.
Disclosure of Invention
In view of this, the utility model provides a flow control device and laboratory paraphernalia of chemical fluidus to solve present laboratory and be difficult to directly acquire the problem of a large amount of quantitative chemical media, direct contact chemical media when can avoiding the laboratory staff to acquire a large amount of quantitative chemical media.
In a first aspect, the present invention provides a flow control device for chemical fluids, comprising:
a fluid line;
one end of the fluid pipeline is connected with the liquid storage tank, and the other end of the fluid pipeline is a fluid outlet;
the fluid pipeline is provided with an electromagnetic valve and a flow sensor, the control end of the electromagnetic valve is connected with the output end of the controller, the flow sensor is connected with the input end of the controller, and the controller is also connected with a human-computer interaction unit;
the flow sensor is used for detecting the flow of the fluid outlet;
the human-computer interaction unit is used for inputting set flow and displaying the flow of the fluid outlet;
the controller is used for controlling the opening or closing of the electromagnetic valve according to the flow of the fluid outlet and the set flow;
wherein, the liquid storage pot is used for storing the chemical fluid.
Preferably, the human-computer interaction unit includes:
a key and a display screen;
the key is used for inputting the set flow;
the display screen is used for displaying the flow of the fluid outlet.
Preferably, one end of the fluid pipeline and the liquid storage tank are provided with a pump;
the pump is used for pumping the fluid in the liquid storage tank into the fluid pipeline.
Preferably, the control end of the pump is also connected with the output end of the controller;
and the controller is used for controlling the start or stop of the pump according to the flow of the fluid outlet and the set flow.
Preferably, the flow sensor is a flow transmitter; and/or the presence of a gas in the interior of the container,
and a check valve is arranged on a connecting pipeline between one end of the fluid pipeline and the liquid storage tank and is used for preventing the fluid of the fluid pipeline from flowing back into the liquid storage tank.
Preferably, the controller is a single chip microcomputer; and/or the presence of a gas in the interior of the container,
the electromagnetic valve and the flow sensor are of an integrated structure.
In a second aspect, the present invention provides a laboratory apparatus, comprising: as the chemical liquid flow control device, the liquid outlet has a faucet.
Preferably, the lower side of the faucet is provided with an operating table.
Preferably, a fluid container is provided on the console and below the faucet.
Preferably, the fluid container has a scale thereon.
The utility model discloses following beneficial effect has at least:
the utility model provides a flow control device and laboratory paraphernalia of chemistry fluidum to it is difficult to directly acquire the problem of a large amount of quantitative chemical medium to solve present laboratory.
The utility model is simple in operation, direct contact chemical medium when acquireing a large amount of ration chemical medium can be avoided to the experimenter. That is to say, the utility model discloses at the in-process that obtains quantitative chemical medium, need not personnel's nurse, have simple and convenient characteristics on the one hand, on the other hand can reduce operating personnel because the risk of receiving the injury that chemical medium spatters outward.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of a flow control device for chemical fluids and a laboratory apparatus according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of the controller and peripheral circuits of the embodiment of fig. 1 according to the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Fig. 1 is a schematic view of a flow control device for chemical fluids and a laboratory apparatus according to an embodiment of the present invention. As shown in fig. 1, a flow control device for chemical fluids includes: a fluid line 1; one end of the fluid pipeline 1 is connected with the liquid storage tank 9, and the other end of the fluid pipeline 1 is a fluid outlet; the fluid pipeline 1 is provided with an electromagnetic valve 2 and a flow sensor 3, the control end of the electromagnetic valve 2 is connected with the output end of a controller 5, the flow sensor 3 is connected with the input end of the controller 5, and the controller 5 is also connected with a human-computer interaction unit; the flow sensor 3 is used for detecting the flow of the fluid outlet; the human-computer interaction unit is used for inputting set flow and displaying the flow of the fluid outlet; the controller 5 is configured to control the opening or closing of the electromagnetic valve 2 according to the flow rate of the fluid outlet and the set flow rate, wherein the liquid storage tank 9 is configured to store chemical fluid. The problem that a large amount of quantitative chemical media are difficult to directly obtain in a laboratory at present is solved.
And simultaneously, the utility model discloses can avoid the experimenter direct contact chemical medium when acquireing a large amount of ration chemical medium. Specifically, since the fluid is taken from the liquid storage tank 9, manual operation is not required, and the fluid can be prevented from splashing to bring danger to operators when the fluid is taken.
The utility model discloses at the in-process that obtains quantitative chemical medium, need not personnel's nurse, have simple and convenient characteristics on the one hand, on the other hand can reduce the risk that receives the injury of operating personnel because chemical medium spatters outward.
In the embodiment of the present invention, the liquid storage tank 9 is used for containing fluid, the chemical fluid may be sulfuric acid, hydrochloric acid or NaOH, and the present invention does not limit the specific chemical fluid. The connection of the reservoir 9 to one end of the fluid line 1 should be performed by a skilled person.
The utility model discloses in, be provided with check valve 12 on the connecting line of 1 one end of fluid pipeline and liquid storage pot 9, check valve 12 is used for preventing the fluid refluence of fluid pipeline 1 in the liquid storage pot 9, avoid causing the fluid pollution that flows back to fluid phenomenon in the liquid storage pot 9.
The utility model discloses an in the embodiment, if want to acquire 1L's fluidum, be 1L through the settlement flow that the human-computer interaction unit exported to controller 5, controller 5 control solenoid 2 is opened, and flow sensor 3 detects simultaneously the flow of fluidum export, and will detect the flow feedback of fluidum export is to controller 5, when detecting the flow of fluidum export is equal with settlement flow 1L, and controller 5 control solenoid 2 closes, just can obtain 1L's fluidum in the fluidum export this moment. Meanwhile, experimenters can also monitor the flow according to the flow of the fluid outlet displayed by the man-machine interaction unit.
In the embodiment of the present invention, the electromagnetic valve 2 is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure or pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. There are many types of solenoid valves, with different solenoid valves functioning at different locations in the control system, the most common being one-way valves, safety valves, directional control valves, speed control valves, etc. The solenoid valve 2 can adopt an SMC solenoid valve VFS4210-5DB pneumatically produced by Shenwei.
In the embodiment of the present invention, in order to set the flow rate for or infinitely close to the flow rate of the fluid outlet, avoid the electromagnetic valve 2 and the chemical fluid is remained in the fluid pipeline 1 between the flow sensors, which causes an error. Therefore, the solenoid valve 2 and the flow sensor 3 are integrated, and an integrated type flow meter solenoid valve body is disclosed in application No. 2011200003302. Or, the electromagnetic valve 2 and the flow sensor 3 adopt a double-flow electromagnetic valve of the fuel dispenser disclosed by application number 2017218922328.
Even if the solenoid valve 2 and the flow sensor 3 are not provided integrally, the flow sensor 3 may be attached to the fluid line 1 at a position where the solenoid valve is provided. For example, the solenoid valve 2 is on the upper side of the fluid line 1, and the flow sensor 3 is installed on the lower side of the fluid line 1, thereby reducing flow errors due to the position interval between the solenoid valve 2 and the flow sensor 3.
The utility model discloses in, the human-computer interaction unit, include: keys 4 and a display 6; the key 4 is used for inputting the set flow; and the display screen 6 is used for displaying the flow of the fluid outlet.
In the utility model, one end of the fluid pipeline 1 and the liquid storage tank 9 are also provided with a pump 7; the pump 7 is used for pumping the fluid in the liquid storage tank 9 into the fluid pipeline 1.
In the present invention, the control end of the pump 7 is further connected to the controller 5; and the controller 5 is used for controlling the start or stop of the pump 7 according to the flow of the fluid outlet and the set flow.
The utility model discloses an in the embodiment, be 1L to the settlement flow of controller 5 output through the man-machine interaction unit, controller 5 control solenoid 2 is opened, and flow sensor 3 detects simultaneously the flow of fluid export will detect the flow feedback of fluid export is to controller 5, and controller 5 control pump 7 starts simultaneously, and pump 7 will the fluid suction in the liquid storage pot 9 in the fluid pipeline 1, when detecting the flow of fluid export is equal with settlement flow 1L, and controller 5 control solenoid 2 closes, and controller 5 control pump 7 stop work this moment.
The utility model discloses in, flow sensor 3 is flow transmitter. The flow transmitter is a high-precision and high-reliability precision metering instrument according to the ISO9951 standard. The reason for this is that, if the flow sensor 3 is used, an AD conversion circuit is also required, which converts the flow rate of the fluid outlet into an electric signal readable by the controller 5. If the flow sensor 3 is a flow transmitter, the flow transmitter can directly output an electrical signal readable by the controller 5.
In an embodiment of the present invention, the flow transmitter is a selectable turbine flow meter. Turbine flow meters use a turbine for measurement. The speed of flow is converted into the speed of rotation of turbine, which is converted into electric signal proportional to flow. Such a flow meter can be used to detect both instantaneous flow and total integrated flow. The range ratio of the turbine flowmeter can reach 10:1, the precision is within +/-0.2%, the time constant of the turbine flowmeter with small inertia and small size can reach 0.01 second, and the turbine flowmeter can be widely applied to petroleum, organic liquid, inorganic liquid, liquefied gas, natural gas, low-temperature fluid and the like.
In the embodiment of the utility model, the GPI turbine flowmeter produced by American Great plants Industries that can be used by the turbine flowmeter, the GPI turbine flowmeter has not only food sanitation grade products, but also corrosion resistance products in the petrochemical field; temperature range of high-temperature type product: -268 ℃ to +426 ℃; maximum pressure bearing of high-pressure type products: 340 Bar; maximum fluid viscosity to 1,000,000 cps; providing a minute flow measurement as small as 0.5LPH (liters/hour).
In the present invention, the controller 5 may be a single chip microcomputer or a controller such as a PLC, but the controller 5 of the present invention is preferably a single chip microcomputer; because controllers such as PLC generally are expensive, and the price is generally between several thousand to several tens of thousands, but the price of singlechip is between several mao to several pieces of money, consequently the utility model discloses a controller 5 preferred is the singlechip. Such as: singlechip STC 89751.
Fig. 2 is a schematic circuit diagram of the controller and peripheral circuits of the embodiment of fig. 1 according to the present invention. As shown in fig. 2, the controller 5 in fig. 2 is a single chip CPU1 (i.e., a single chip STC 89751), the single chip CPU1 has 22 pins (pin 1-pin 22), pin 9 of the single chip CPU1 is connected to the power VCC through a filter capacitor C1, and pin 9 of the single chip CPU1 is also connected to ground GND through a first resistor R1; pins 18 and 19 of the singlechip CPU1 are respectively connected with two ends of a crystal oscillator Y1, and two ends of the crystal oscillator Y1 are respectively connected with ground GND through a second capacitor C2 and a third capacitor C3; 20 pins of the singlechip CPU1 are connected with the ground GND; pin 40 of the singlechip CPU1 is connected with a power supply VCC. The output end of the flow sensor 3 or the flow transmitter in fig. 1 is connected with a pin 6P 15 of a single chip microcomputer CPU1, the control end of the electromagnetic valve 2 in fig. 1 is connected with a pin 7P 16 of a single chip microcomputer CPU1, the key 4 in fig. 1 is connected with a pin 8P 17 of the single chip microcomputer CPU1, the display screen 6 in fig. 1 is connected with a pin 25P 24 of a single chip microcomputer CPU1, and the pump 7 in fig. 1 is connected with a pin 26P 25 of the single chip microcomputer CPU 1.
The utility model also provides laboratory equipment, include: the flow control device for chemical fluids as described above, characterized in that said fluid outlet is provided with a tap 8.
In the present invention, the lower side of the water tap 8 is provided with an operation table 10. A fluid container 11 is provided above the operation table 10 and below the water tap 8. The fluid container 11 has a scale.
In an embodiment of the present invention, the fluid container 11 may be a beaker or other chemical utensil.
In operation of the present invention, the fluid container 11 is placed on the operation table 10, the upper opening of the fluid container 11 is aligned with the lower end of the faucet 8, the lower end of the faucet 8 is preferably located in the fluid container 11, and then the flow is set by inputting the key 4, so that the collection of the quantitative chemical medium can be completed.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A flow control device for chemical fluids, comprising: a fluid line (1); one end of the fluid pipeline (1) is connected with the liquid storage tank (9), and the other end of the fluid pipeline (1) is a fluid outlet, and is characterized in that:
the fluid pipeline (1) is provided with an electromagnetic valve (2) and a flow sensor (3), the control end of the electromagnetic valve (2) is connected with the output end of a controller (5), the flow sensor (3) is connected with the input end of the controller (5), and the controller (5) is also connected with a human-computer interaction unit;
the flow sensor (3) is used for detecting the flow of the fluid outlet;
the human-computer interaction unit is used for inputting set flow and displaying the flow of the fluid outlet;
the controller (5) is used for controlling the opening or closing of the electromagnetic valve (2) according to the flow of the fluid outlet and the set flow;
wherein, the liquid storage tank (9) is used for storing chemical fluid.
2. The flow control device for chemical fluids according to claim 1, wherein said human-computer interaction unit comprises:
a key (4) and a display screen (6);
the key (4) is used for inputting the set flow;
the display screen (6) is used for displaying the flow of the fluid outlet.
3. A chemical fluid flow control device according to claim 1, wherein one end of said fluid line (1) and said reservoir (9) further comprise a pump (7);
the pump (7) is used for pumping the fluid in the liquid storage tank (9) into the fluid pipeline (1).
4. A chemical fluid flow control device according to claim 3, wherein the control terminal of the pump (7) is further connected to the output terminal of the controller (5);
the controller (5) is used for controlling the start or stop of the pump (7) according to the flow of the fluid outlet and the set flow.
5. A chemical fluid flow control device according to any of claims 1-4, characterized in that the flow sensor (3) is a flow transmitter; and/or the presence of a gas in the interior of the container,
a check valve (12) is arranged on a connecting pipeline between one end of the fluid pipeline (1) and the liquid storage tank (9), and the check valve (12) is used for preventing the fluid of the fluid pipeline (1) from flowing back into the liquid storage tank (9).
6. A flow control device for chemical fluids according to any of the claims 1-4, characterised in that said controller (5) is a single-chip microcomputer; and/or the presence of a gas in the interior of the container,
the electromagnetic valve (2) and the flow sensor (3) are of an integrated structure.
7. A laboratory apparatus comprising: a chemical fluid flow control device according to any of claims 1-6, characterized in that the fluid outlet is provided with a tap (8).
8. Laboratory apparatus according to claim 7, characterized in that the tap (8) has an operating table (10) on its underside.
9. Laboratory apparatus according to claim 8, characterized in that the operating table (10) has a fluid container (11) above and below the water tap (8).
10. Laboratory apparatus according to claim 9, characterized in that the fluid container (11) is provided with a scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020350896.7U CN211349114U (en) | 2020-03-19 | 2020-03-19 | Chemical fluid's flow control device and laboratory paraphernalia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020350896.7U CN211349114U (en) | 2020-03-19 | 2020-03-19 | Chemical fluid's flow control device and laboratory paraphernalia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211349114U true CN211349114U (en) | 2020-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020350896.7U Expired - Fee Related CN211349114U (en) | 2020-03-19 | 2020-03-19 | Chemical fluid's flow control device and laboratory paraphernalia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211349114U (en) |
-
2020
- 2020-03-19 CN CN202020350896.7U patent/CN211349114U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |