CN210357081U - Flow control system and experimental device - Google Patents
Flow control system and experimental device Download PDFInfo
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- CN210357081U CN210357081U CN201920545906.XU CN201920545906U CN210357081U CN 210357081 U CN210357081 U CN 210357081U CN 201920545906 U CN201920545906 U CN 201920545906U CN 210357081 U CN210357081 U CN 210357081U
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Abstract
The utility model provides a flow control system and experimental apparatus. The flow control system comprises a liquid storage device, an air inlet pipeline, a liquid inlet pipeline and a flow control device, wherein the flow control device is connected with the liquid storage device and comprises a needle valve assembly, a liquid delivery pipeline and a liquid outlet pipeline which are connected to the needle valve assembly; the gas warp the inlet line gets into among the liquid storage device for produce the malleation among the liquid storage device, in order to drive and get into via the feed liquor pipeline liquid among the liquid storage device gets into and send the liquid pipeline, and pass through under needle valve component's synergistic effect the drain pipe is discharged. The utility model discloses a flow control system passes through needle valve assembly and gas pressure's cooperation, has realized the transport of small flow liquid for the experimental apparatus who uses this flow control system has simple structure, small, velocity of flow, the stable characteristics of flow.
Description
Technical Field
The utility model relates to a flow control system and use this flow control system's experimental apparatus belongs to experiment control field.
Background
During the use of the experimental apparatus, it is a great problem to control the flow rate and the flow rate of the liquid entering the reaction chamber.
Although the experimental device in the prior art can accurately control the large-flow liquid, the volume of the flow control system is large and the operation maintenance cost is high when the large-flow liquid enters the experimental device, so that the waste of liquid raw materials transferred by the flow control system in the prior art is caused, and the experimental cost is increased.
For the control of small-flow liquid, at present, a high-pressure constant flow pump is mostly adopted to ensure the flow and the flow rate of the liquid input into the experimental device, but the precision of the high-pressure constant flow pump is only 0.1mL/min, so that the experimental project with higher precision requirement cannot be met.
In view of the above, there is a need for an improved flow control system in the prior art to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flow control system and use this flow control system's experimental apparatus, this flow control system passes through needle valve assembly and gas pressure's cooperation, has realized the transport of small flow liquid for the experimental apparatus who uses this flow control system has simple structure, small, the stable characteristics of velocity of flow.
In order to achieve the purpose of the utility model, the utility model provides a flow control system, which comprises a liquid storage device, an air inlet pipeline, a liquid inlet pipeline and a flow control device, wherein the flow control device is connected with the liquid storage device and comprises a needle valve assembly, a liquid feeding pipeline and a liquid outlet pipeline which are connected with the needle valve assembly; the gas warp the inlet line gets into among the liquid storage device for produce the malleation among the liquid storage device, in order to drive and get into via the feed liquor pipeline liquid among the liquid storage device gets into and send the liquid pipeline, and pass through under needle valve component's synergistic effect the drain pipe is discharged.
As a further improvement, the liquid storage device is also provided with a barometer above to detect the gas pressure inside the liquid storage device.
As a further improvement of the utility model, the needle valve subassembly is including connecting on the liquid storage device and with liquid storage device sealing connection's valve body, accept needle in the valve body and connecting needle knob on the needle is rotatory the needle knob is in order to drive the needle upwards slides the certain distance to liquid in the liquid storage device gets into under the effect of gas pressure send the liquid pipeline, and the warp the drain pipe is discharged.
As a further improvement of the utility model, the valve body still be equipped with the accept channel that stock solution device intercommunication set up, accept channel is including being used for acceping the main road passageway of needle and connecting first branch road passageway and second branch road passageway on the main road passageway, first branch road passageway with liquid delivery pipeline intercommunication sets up, second branch road passageway with liquid outlet pipeline intercommunication sets up.
As a further improvement of the present invention, one end of the valve needle is fixedly connected to the valve needle knob, and the other end of the valve needle is accommodated in the main path channel and abuts against a connection position of the first branch path channel and the main path channel; and when the valve needle knob is rotated, the valve needle slides upwards along the main path channel to open the first branch path channel, so that the liquid in the liquid storage device enters the liquid conveying pipeline under the action of gas pressure and flows out of the liquid outlet pipeline.
As a further improvement of the utility model, first branch road way with main road channel has the same extending direction, just the diameter of first branch road way is less than the diameter of main road channel, second branch road channel with main road channel is the contained angle setting.
As a further improvement of the present invention, the liquid feeding pipeline is accommodated in the liquid storage device, one end of the liquid feeding pipeline is connected to the accommodating channel, and the other end of the liquid feeding pipeline extends into the bottom of the liquid storage device.
As a further improvement of the utility model, the air inlet pipeline sets up the top of stock solution device, include the inlet end, give vent to anger the end and be located inlet end and the first valve between the end of giving vent to anger, give vent to anger the end with the stock solution device intercommunication sets up, first valve is arranged in controlling gas and holds the entering through giving vent to anger in the stock solution device.
As a further improvement, the liquid inlet pipeline is arranged on the liquid storage device and communicated with the liquid storage device, the liquid inlet pipeline is provided with a second valve, and the second valve is used for sealing the liquid inlet pipeline to ensure the sealing performance of the liquid storage device.
In order to realize the above object of the present invention, the present invention provides an experimental apparatus, which comprises a reaction device and a flow control system for inputting reaction liquid into the reaction device, wherein the flow control system is the aforementioned flow control system.
The utility model has the advantages that: the flow control system of the utility model is provided with the flow control device connected with the pipeline of the liquid storage device and the air inlet pipeline communicated with the liquid storage device, thereby utilizing the gas pressure input by the needle valve component and the air inlet pipeline to control the liquid in the liquid storage device to flow out, and controlling the flow velocity when the liquid flows out by adjusting the opening degree of the needle valve component and the air pressure of the liquid storage device, so as to accurately ensure the output of small flow and small flow velocity of the liquid; and simultaneously, the utility model discloses a flow control system's small, simple structure can effectively reduce the occupation space of using this flow control system's experimental apparatus, has reduced the waste of the liquid that is used for the reaction in the experimental apparatus effectively, reduces the cost of experiment when guaranteeing the accuracy of experiment.
Drawings
Fig. 1 is a schematic structural diagram of the flow control system of the present invention.
Fig. 2 is an enlarged view of a portion of the flow control device of fig. 1.
Fig. 3 is a schematic structural diagram of the experimental apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, a flow control system 100 according to the present invention is shown. The flow control system 100 includes a liquid storage device 1, an air inlet pipeline 2, a liquid inlet pipeline 3, and a flow control device 4.
The liquid storage device 1 has a liquid storage cavity 11 for carrying liquid, and the liquid storage cavity 11 is in a sealed arrangement to prevent liquid and/or gas injected into the liquid storage cavity 11 from overflowing from the liquid storage cavity 11. Further, the liquid storage device 1 is made of a pressure-resistant and corrosion-resistant material to prevent the liquid storage device 1 from reacting with the liquid and/or gas injected into the liquid storage device, so that the flow control system 100 is suitable for multiple fields of chemical industry, production, life and the like.
The gas inlet line 2 is used to introduce gas into the reservoir chamber 11 so that the reservoir chamber 11 is at/remains at a positive pressure after aeration. The air inlet pipeline 2 is arranged on the liquid storage device 1 and comprises an air inlet end 21, an air outlet end 22 and a first valve 23. End 22 sealing connection of giving vent to anger just communicates the setting with stock solution chamber 11 on stock solution device 1 the utility model discloses an in the preferred embodiment, air inlet pipeline 2 sets up with stock solution device 1 is integrative to guarantee stock solution device 1's leakproofness, certainly in other embodiments, air inlet pipeline 2 still can set up with stock solution device 1 components of a whole that can function independently, promptly the utility model discloses the concrete connection form between well air inlet pipeline 2 and the stock solution device 1 can be selected according to actual need, only need guarantee between air inlet pipeline 2 and the stock solution device 1 the leakproofness of being connected can.
Further, an air pressure gauge 12 is arranged above the liquid storage device 1, so that on one hand, the air pressure in the liquid storage cavity 11 can be timely and effectively adjusted; on the other hand, can monitor the atmospheric pressure in the liquid storage cavity 11 and instruct, when the atmospheric pressure in the liquid storage cavity 11 appears and reduces unusually, can in time detect the sealed condition of stock solution device 1, guarantee flow control system 100's normal use.
The liquid inlet pipeline 3 is used for introducing liquid into the liquid storage device 1, and the liquid inlet pipeline 3 is hermetically connected with the liquid storage device 1 to prevent gas and/or liquid in the liquid storage cavity 11 from overflowing along the liquid inlet pipeline 3. In a preferred embodiment of the present invention, the liquid inlet pipe 3 is disposed on the liquid storage device 1 and is connected to the liquid storage device 1, and the liquid inlet pipe 3 is provided with the second valve 31, the second valve 31 is used for sealing the liquid inlet pipe 3, so as to ensure the sealing performance of the liquid storage device, prevent the overflow of the gas and/or liquid in the liquid storage cavity 11 along the liquid inlet pipe 3, and ensure the stability of the pressure in the liquid storage cavity 11.
It should be noted that, the utility model discloses in through the gas that air inlet pipeline 2 got into in the stock solution chamber 11 and through entering between the liquid that liquid pipeline 3 got into the stock solution chamber 11 can not take place mutual solution or chemical reaction, prevent to cause the change of liquid nature because of the dissolution/reaction between gas and the liquid.
Referring to fig. 2 in conjunction with fig. 1, the flow control device 4 is adapted to cooperate with gas entering the liquid storage device 1 through the inlet line 2 to control the flow rate and/or velocity of liquid exiting the flow control system 100. Specifically, the flow rate control device 4 is connected to the liquid storage device 1, and includes a needle valve assembly 41, a liquid supply line 42 connected to the needle valve assembly 41, and a liquid discharge line 43.
The needle valve assembly 41 includes a valve body 411 connected to the liquid storage device 1 and hermetically connected to the liquid storage device 1, a needle 412 accommodated in the valve body 411, and a needle knob 413 connected to the needle 412, the valve body 411 further has an accommodating passage 414, and the accommodating passage 414 penetrates through the valve body 411 and is communicated with the liquid storage device 1.
The valve body 411 is hermetically connected to the liquid storage device 1, and the housing passage 414 is disposed to communicate with the liquid storage chamber 11, and further, the housing passage 414 includes a main passage 4141 for housing the valve needle 412 and a first branch passage 4142 and a second branch passage 4143 connected to the main passage 4141. The first branch passage 4142 is provided in communication with the liquid feed passage 42 to introduce liquid into the needle valve assembly 4. In a preferred embodiment of the present invention, the first branch passage 4142 and the main passage 4141 have the same extending direction, so as to effectively prevent the liquid entering the first branch passage 4142 from remaining, and of course, in other embodiments, the first branch passage 4142 may be disposed at a certain angle with the main passage 4141, that is, the setting angle between the first branch passage 4142 and the main passage 4141 may be selected according to actual needs, which is not limited herein.
Preferably, the diameter of the first branch passage 4142 is smaller than the diameter of the main passage 4141 to ensure that the valve needle 412 received in the main passage 4141 can completely seal the first branch passage 4142, preventing the liquid introduced into the needle valve assembly 41 through the liquid feeding passage 42 from directly entering the main passage 4141 along the first branch passage 4142, causing an error in the control of the liquid flow rate and/or flow rate.
The second branch passage 4143 is disposed at an included angle with the main passage 4141 and is communicated with the liquid outlet pipe 43, so as to transfer the liquid entering the main passage 4141 to the liquid outlet pipe 43, preferably, the second branch passage 4143 extends in a direction perpendicular to the main passage 4141, so that the length of the second branch passage 4143 can be effectively reduced, the processing difficulty is reduced, meanwhile, the residue of the liquid in the second branch passage 4143 can be reduced, and the use precision of the flow control system 100 is further improved.
The needle 412 includes a main body portion (not numbered) and a needle portion (not numbered) provided at an end of the main body portion, the main body portion and the needle portion being housed in the main passage 4141, and the needle portion abutting at a position where the first branch passage 4142 communicates with the main passage 4141 to prevent the needle valve assembly 41 from being insufficiently sealed.
The valve needle knob 413 is arranged on the valve needle 412 and is located at one end, opposite to the needle part, of the main body part of the valve needle 412 to drive the valve needle 412 to move in the main path channel 4141, specifically, the valve needle knob 413 is rotated, the valve needle 412 can be driven by the valve needle knob 413 to slide upwards along the main path channel 4141, a certain opening degree is further formed between the needle part and the first branch path 4142, and at the moment, liquid in the liquid storage cavity 11 enters the liquid conveying pipeline 42 under the action of positive gas pressure and is discharged through the liquid outlet pipeline 43; and when the needle knob 413 is rotated reversely, the needle part slides along the main path channel 4141 toward the first branch path channel 4142, at this time, the opening degree between the needle part and the first branch path channel 4142 is decreased, and the flow rate/velocity of the liquid discharged through the liquid outlet channel 43 is decreased; when the needle part again abuts at a position where the first branch passage 4142 communicates with the main passage 4141 by the rotation of the needle knob 413, the needle valve assembly 41 is in a closed state, at which time the liquid stored in the reservoir chamber 11 stops being discharged to the outside.
The liquid feed line 42 is housed in the liquid storage device 1 and feeds liquid to the needle valve assembly 41. Specifically, the liquid sending pipe 42 is accommodated in the liquid storage cavity 11, one end of the liquid sending pipe 42 is communicated with the first branch passage 4142, and the other end of the liquid sending pipe 42 extends into the bottom of the liquid storage cavity 11, so that the liquid in the liquid storage cavity 11 flows out along the liquid sending pipe 42 and the liquid outlet pipe 43 under the pressure of the gas in the liquid storage cavity 11, that is, in the process of liquid conveying, the liquid sending pipe 42 is only required to be positioned below the liquid level of the liquid in the liquid storage cavity 11, of course, if the liquid level is lower than the other end of the liquid sending pipe 42, the liquid sending pipe 42 can convey the gas outwards, and at this time, the liquid can be continuously supplemented into the liquid storage cavity 11 through the liquid inlet pipe 3.
Further, a liquid level sensor is arranged in the liquid storage cavity 11 to prevent the gas entering the liquid storage cavity 11 from directly overflowing along the liquid feeding pipeline 42, the needle valve assembly 41 and the liquid outlet pipeline 43; alternatively, the liquid storage device 1 may be transparent to facilitate observation of whether the liquid level in the liquid storage chamber 11 is above the other end of the liquid supply line 42.
It should be noted that, in the present invention, the liquid level sensor or the liquid storage device 1 disposed in the liquid storage cavity 11 is only used as an example to illustrate the transparent setting, and certainly in other embodiments, it can also be ensured that the liquid level of the liquid is located above the other end of the liquid feeding pipeline 42 by other ways, that is, the liquid level sensor or the liquid storage device 1 disposed in the liquid storage cavity 11 is only exemplary and should not be limited thereto.
The liquid outlet pipe 43 is connected to the valve body 411 of the needle valve assembly 41 and is connected to the second branch passage 4143 for transferring the liquid flowing out through the second branch passage 4143 to the next process. It should be noted that, since the liquid outlet pipe 43 of the present invention is a known structure in the prior art, the description of the known structure is omitted to avoid unnecessarily obscuring the concept of the present invention.
When the flow control system 100 of the present invention is used, the second valve 31 on the liquid inlet pipeline 3 is opened to make the liquid enter the liquid storage cavity 11 along the liquid inlet pipeline 3, and ensure that the liquid level of the liquid is over the other end of the liquid delivery pipeline 42; after the liquid injection is finished, the second valve 31 is closed and the first valve 23 on the air inlet pipeline 2 is opened, so that the gas enters the liquid storage cavity 11 along the air inlet pipeline 2, and after the reading of the barometer 12 is stable, the valve needle knob 413 is rotated to drive the valve needle 412 to open a certain gap; at this time, the liquid gradually enters the liquid feeding pipeline 42 under the action of the air pressure and flows to the liquid outlet pipeline 43 along the liquid feeding pipeline 42, the first branch channel 4142, the main channel 4141 and the second branch channel 4143, and a tiny gap formed between the valve needle 412 and the main channel 4141 forms the flow resistance of the liquid in the process, so that the purpose of controlling the flow rate and/or the flow velocity of the liquid is achieved. Further, through the aperture and the gas pressure of needle 412 in adjusting needle valve subassembly 41, can adjust the flow/the velocity of flow of the liquid that flow control system 100 flows out, just the utility model discloses a flow control system 100's flow control precision can reach 0.01mL/min, is applicable to the higher field of required precision.
Referring to fig. 3, the present invention further provides an experimental apparatus 200, wherein the experimental apparatus 200 includes a reaction device 210 and a flow control system for inputting liquid into the reaction device 210, and the flow control system is the aforementioned flow control system 100. Specifically, the liquid outlet 43 of the flow rate control system 100 is connected to the reaction apparatus 210 and is provided in communication with the reaction apparatus 210 so as to introduce a reaction liquid required for the reaction into the reaction apparatus 210. Further, because the utility model discloses a flow control system 100 mainly comprises stock solution device 1 and flow control device 4, therefore flow control system 100's size can be under the condition of guaranteeing the liquid flow rate, adjusts according to experimental apparatus 200's needs, makes the utility model discloses an experimental apparatus 200 had both higher liquid flow control precision, had less volume simultaneously for experimental apparatus 200 is suitable for the practicality.
To sum up, the utility model discloses a flow control system 100 through set up with the flow control device 4 of 1 tube coupling of stock solution device and with the air inlet pipeline 2 that stock solution device 1 intercommunication set up to under the combined action of the gaseous atmospheric pressure of needle valve subassembly 41 and air inlet pipeline 2 input, the liquid among the steerable flow control system 100 flows, and the flow/velocity of flow when the atmospheric pressure control liquid among the aperture of accessible regulation needle valve subassembly 41 and the stock solution device 1 flows, with the output of guaranteeing liquid low discharge, the low velocity of flow accurately. And simultaneously, the utility model discloses a flow control system 100's simple structure, and can adjust flow control system 100's size as required for the little and flow control accuracy of occupation space of experimental apparatus 200 who uses this flow control system 100 has effectively guaranteed the accuracy of experimental result in experimental apparatus 200, has reduced the cost that experimental apparatus 200 tested simultaneously.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a flow control system, includes stock solution device, inlet line and inlet line, its characterized in that: the flow control device is connected with the liquid storage device and comprises a needle valve assembly, a liquid delivery pipeline and a liquid outlet pipeline, wherein the liquid delivery pipeline and the liquid outlet pipeline are connected to the needle valve assembly; the gas warp the inlet line gets into among the liquid storage device for produce the malleation among the liquid storage device, in order to drive and get into via the feed liquor pipeline liquid among the liquid storage device gets into and send the liquid pipeline, and pass through under needle valve component's synergistic effect the drain pipe is discharged.
2. The flow control system of claim 1, wherein: and a barometer is arranged above the liquid storage device to detect the gas pressure in the liquid storage device.
3. The flow control system of claim 1, wherein: needle valve subassembly is including connecting on the stock solution device and with stock solution device sealing connection's valve body, accept needle in the valve body and connecting needle knob on the needle is rotatory needle knob to drive needle certain distance that upwards slides to liquid in the stock solution device gets into under the effect of gas pressure send the liquid pipeline, and the warp drain pipe discharges.
4. The flow control system of claim 3, wherein: the valve body is further provided with an accommodating channel communicated with the liquid storage device, the accommodating channel comprises a main channel for accommodating the valve needle, and a first branch channel and a second branch channel which are connected to the main channel, the first branch channel is communicated with the liquid sending pipeline, and the second branch channel is communicated with the liquid outlet pipeline.
5. The flow control system of claim 4, wherein: one end of the valve needle is fixedly connected with the valve needle knob, and the other end of the valve needle is accommodated in the main path channel and is abutted against the connecting position of the first branch path channel and the main path channel; and when the valve needle knob is rotated, the valve needle slides upwards along the main path channel to open the first branch path channel, so that the liquid in the liquid storage device enters the liquid conveying pipeline under the action of gas pressure and flows out of the liquid outlet pipeline.
6. The flow control system of claim 4, wherein: the first branch channel and the main path channel have the same extension direction, the diameter of the first branch channel is smaller than that of the main path channel, and the second branch channel and the main path channel are arranged at an included angle.
7. The flow control system of claim 4, wherein: the liquid conveying pipeline is accommodated in the liquid storage device, one end of the liquid conveying pipeline is communicated with the accommodating channel, and the other end of the liquid conveying pipeline extends into the bottom of the liquid storage device.
8. The flow control system of claim 1, wherein: the air inlet pipeline is arranged above the liquid storage device and comprises an air inlet end, an air outlet end and a first valve located between the air inlet end and the air outlet end, the air outlet end is communicated with the liquid storage device, and the first valve is used for controlling air to enter the liquid storage device through the air outlet end.
9. The flow control system of claim 1, wherein: the liquid inlet pipeline is arranged on the liquid storage device and communicated with the liquid storage device, and a second valve is arranged on the liquid inlet pipeline and used for sealing the liquid inlet pipeline so as to ensure the sealing performance of the liquid storage device.
10. An experimental device, comprising a reaction device and a flow control system for inputting reaction liquid into the reaction device, characterized in that: the flow control system is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920545906.XU CN210357081U (en) | 2019-04-22 | 2019-04-22 | Flow control system and experimental device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920545906.XU CN210357081U (en) | 2019-04-22 | 2019-04-22 | Flow control system and experimental device |
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| CN210357081U true CN210357081U (en) | 2020-04-21 |
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| CN201920545906.XU Active CN210357081U (en) | 2019-04-22 | 2019-04-22 | Flow control system and experimental device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999724A (en) * | 2019-04-22 | 2019-07-12 | 苏州高迈新能源有限公司 | Flow control system and experimental provision |
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2019
- 2019-04-22 CN CN201920545906.XU patent/CN210357081U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999724A (en) * | 2019-04-22 | 2019-07-12 | 苏州高迈新能源有限公司 | Flow control system and experimental provision |
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