CN111991844B - Extraction device with automatic extraction and liquid taking functions and extraction method - Google Patents
Extraction device with automatic extraction and liquid taking functions and extraction method Download PDFInfo
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- CN111991844B CN111991844B CN202010743825.8A CN202010743825A CN111991844B CN 111991844 B CN111991844 B CN 111991844B CN 202010743825 A CN202010743825 A CN 202010743825A CN 111991844 B CN111991844 B CN 111991844B
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- 238000000605 extraction Methods 0.000 title claims abstract description 177
- 239000007788 liquid Substances 0.000 title claims abstract description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000005086 pumping Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 description 13
- 230000005484 gravity Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0484—Controlling means
Abstract
The invention provides an extraction device with automatic extraction and liquid extraction functions, which comprises: a first extraction flask and a second extraction flask; the communicating pipe is communicated with the bottom end of the first extraction bottle and the bottom end of the second extraction bottle; the two ends of the cylinder body are respectively connected with the top end of the first extraction bottle and the top end of the second extraction bottle; the piston is arranged in the cylinder body and is provided with a shell and an iron core arranged on the shell; the first electromagnet is arranged outside the cylinder body and can drive the iron core to drive the shell to reciprocate between two ends in the cylinder body through magnetic force; the sixth electromagnetic valve is connected between the cylinder body and the first extraction bottle; the third electromagnetic valve is connected to a branch between the sixth electromagnetic valve and the first extraction bottle; the fifth electromagnetic valve is connected to a branch between the cylinder body and the second extraction bottle and is used for connecting the vacuumizing device; the extraction device with the automatic extraction and liquid taking functions can improve the extraction speed and accelerate the extraction efficiency; the invention also provides an extraction method.
Description
Technical Field
The invention relates to the field of water quality monitoring equipment, in particular to an extraction device and an extraction method with automatic extraction and liquid taking functions.
Background
According to the relevant standard of 'HJ 637-2012 water quality oil and animal and vegetable oil determination infrared spectrophotometry' issued by the ministry of environmental protection, when oil substances in a water sample are determined, solvents such as a benzene extractant and the like are adopted to extract oily substances in the water sample, and then the next determination is carried out.
In order to better extract a water sample, the prior art provides an extraction method, an extraction bottle A is connected with an extraction bottle B by a U-shaped pipe, the water sample is filled in the extraction bottle A, a benzene extractant is filled in the extraction bottle B, the benzene extractant is relatively fixed at the position of the U-shaped pipe under the action of gravity because the specific gravity of the benzene extractant is smaller than that of the water, when a vacuum pump pumps air from one end of the extraction bottle A, the benzene extractant can rapidly penetrate through the water sample from the extraction bottle B and enter the extraction bottle A, on the contrary, when the vacuum pump pumps air from one end of the extraction bottle B, the benzene extractant can rapidly penetrate through the water sample from the extraction bottle A and enter the extraction bottle B, and a time relay is used for controlling the total extraction time and switching the pumping time, so that oil substances can be extracted from the water; the starting and vacuumizing speeds of the vacuumizing device are slow, so that the extraction speed is limited, and the vacuumizing device is damaged by frequent starting and stopping; in order to ensure the vacuum pumping effect, the sealing between the extraction bottle and the pumping device must be ensured, which brings difficulty to the separation and liquid extraction after the extraction is finished.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the extraction device with the automatic extraction and liquid extraction functions provided by the invention can improve the extraction speed and increase the extraction efficiency, and is convenient for the separation of the extraction liquid after extraction is finished.
The extraction device with automatic extraction and liquid extraction functions of one aspect of the invention comprises: a first extraction flask and a second extraction flask; the communicating pipe is communicated with the bottom end of the first extraction bottle and the bottom end of the second extraction bottle; the two ends of the cylinder body are respectively connected with the top end of the first extraction bottle and the top end of the second extraction bottle; the piston is arranged in the cylinder body and is provided with a shell and an iron core arranged on the shell; the first electromagnet is arranged outside the cylinder body and can drive the iron core to drive the shell to reciprocate between two ends in the cylinder body through magnetic force; the sixth electromagnetic valve is connected between the cylinder body and the first extraction bottle; the third electromagnetic valve is connected to a branch between the sixth electromagnetic valve and the first extraction bottle; and the fifth electromagnetic valve is connected to a branch between the cylinder body and the second extraction bottle and is used for being connected with a vacuumizing device.
Furthermore, a seventh electromagnetic valve is connected between the cylinder body and the second extraction bottle, and a fifth electromagnetic valve is connected on a branch between the seventh electromagnetic valve and the second extraction bottle.
Further, a liquid storage tank is connected between the fifth electromagnetic valve and the vacuumizing device.
Further, the fifth electromagnetic valve and the vacuumizing device are both connected to the upper end of the liquid storage tank.
Further, the iron core is wrapped by the shell, and the length a of the shell is larger than the diameter d of the shell.
Furthermore, a second electromagnet and a first electromagnet are respectively arranged at two ends of the cylinder body.
Further, a translation device is arranged on the cylinder body and used for driving the first electromagnet to translate along the extending direction of the cylinder body.
The extraction method of the second aspect of the present invention, which uses the above-mentioned extraction apparatus with automatic extraction and liquid extraction functions, includes the following steps: a liquid inlet step, namely filling a water sample to be detected into a first extraction bottle, and filling a benzene extractant into a second extraction bottle; an extraction step, closing the third electromagnetic valve and the fifth electromagnetic valve, opening the sixth electromagnetic valve, and controlling the first electromagnet to enable the piston to reciprocate in the cylinder body; and a liquid taking step, namely closing the sixth electromagnetic valve, opening the third electromagnetic valve and the fifth electromagnetic valve, and pumping out the extracted water sample through a vacuumizing device.
Further, the extraction step comprises controlling the translation device to drive the electrified first electromagnet to reciprocate.
When the extraction device with the automatic extraction function is applied, a water sample to be extracted is filled into the first extraction bottle, a benzene extractant is filled into the second extraction bottle, the sixth electromagnetic valve is opened, the third electromagnetic valve and the fifth electromagnetic valve are closed, the water sample to be extracted and the benzene extractant are isolated from the outside atmosphere, then the first electromagnet is controlled to apply magnetic force to the iron core, the iron core drives the shell to reciprocate in the cylinder body, the air pressure on the two sides of the piston is alternately changed under the action of the piston, the water sample is relatively fixed at the position of the communicating pipe under the action of gravity because the density of the benzene extractant is smaller than that of the water sample, the water sample continuously passes through the water sample under the action of the alternate air pressure on the two sides of the benzene extractant, the extraction speed can be increased by increasing the reciprocating motion speed of the piston in the extraction process, the vacuumizing device does not need to be started and stopped frequently, so that the limitation of the vacuumizing device on the extraction speed is effectively avoided, and the extraction efficiency is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an extraction apparatus with automatic extraction and liquid extraction functions according to an embodiment of the present invention;
FIG. 2 is a schematic view of another extraction apparatus with automatic extraction and liquid extraction functions according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a cylinder and piston in an embodiment of the invention;
FIG. 4 is a cross-sectional isometric view of a reservoir in an embodiment of the invention;
the above figures contain the following reference numerals.
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 110 | The |
310 | |
| 120 | |
311 | |
| 130 | |
410 | |
| 210 | First |
420 | |
| 220 | Second |
430 | |
| 230 | |
440 | Piston |
| 240 | |
441 | |
| 250 | |
442 | |
| 260 | Sixth |
450 | |
| 270 | Seventh solenoid valve |
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In a first aspect of the present embodiment, an extraction apparatus with automatic extraction and liquid extraction functions is provided, which includes: a first extraction flask 110 and a second extraction flask 120; a connection pipe 130 for connecting the bottom end of the first extraction flask 110 and the bottom end of the second extraction flask 120; a cylinder 410, both ends of which are respectively connected with the top ends of the first extraction flask 110 and the second extraction flask 120; a piston 440 provided inside the cylinder 410 and having a housing 441 and an iron core 442 provided on the housing 441; a first electromagnet 420 disposed outside the cylinder 410 and capable of driving the iron core 442 to slide the housing 441 between both ends of the cylinder 410 by magnetic force; a sixth solenoid valve 260 connected between the cylinder 410 and the first extraction flask 110; the third electromagnetic valve 230 is connected to a branch between the sixth electromagnetic valve 260 and the first extraction flask 110; and the fifth electromagnetic valve 250 is connected to a branch between the cylinder 410 and the second extraction flask 120, and the fifth electromagnetic valve 250 is used for connecting a vacuum-pumping device.
When the extraction device with automatic extraction and liquid extraction functions of the first aspect of this embodiment is used to perform extraction, firstly, a water sample to be extracted is filled into the first extraction bottle 110, and a benzene extractant is filled into the second extraction bottle 120, then the sixth electromagnetic valve 260 is opened, the third electromagnetic valve 230 and the fifth electromagnetic valve 250 are closed, so that the water sample and the benzene extractant to be extracted are isolated from the external atmosphere, then the first electromagnet 420 is controlled to apply magnetic force to the iron core 442, so that the iron core 442 drives the shell 441 to reciprocate in the cylinder 410, at this time, the air pressure on the two sides of the piston 440 is alternately changed under the action of the piston 440, because the density of the benzene extractant is less than that of the water sample, under the action of gravity, the water sample is relatively fixed at the position of the communicating pipe 130, and the benzene extractant continuously passes through the water sample under the action of alternate change of air pressure at two sides, so that oily substances in the water sample are extracted by the extractant; after extraction is completed, the sixth electromagnetic valve 260 can be closed, the third electromagnetic valve 230 and the fifth electromagnetic valve 250 are opened, and the vacuum extractor is opened, so that the extracted water sample is extracted through the fifth electromagnetic valve 250, and the separation of the water sample and the extraction liquid is completed; in the extraction process, the extraction speed can be increased by increasing the reciprocating speed of the piston 440, the vacuumizing device does not need to be started or stopped frequently, the limitation of the vacuumizing device on the extraction speed is effectively avoided, and the extraction efficiency is improved.
The first electromagnet 420 may drive the iron core 442 in various manners to drive the housing 441 to reciprocate in the cylinder 410, for example, the iron core 442 is made of a permanent magnetic material, so that the iron core 442 itself becomes a permanent magnet; then, alternating current is supplied to the first electromagnet 420, so that the first electromagnet 420 generates an alternating magnetic field, and the iron core 442 is subjected to periodically changing acting force under the action of the alternating magnetic field to drive the iron core 442 to drive the shell to reciprocate in the cylinder 410; as shown in fig. 1, a first electromagnet 420 and a second electromagnet 430 are respectively disposed at two ends of the cylinder 410, and the first electromagnet 420 and the second electromagnet 430 are energized alternately, so that the first electromagnet 420 and the second electromagnet 430 alternately generate an attractive force on the iron core 442, and the iron core 442 drives the housing 441 to reciprocate in the cylinder 410; as shown in fig. 2, a translation device 450 may be disposed on the cylinder 410, and the translation device 450 drives the first electromagnet 420 after being energized to reciprocate, and further drives the iron core 442 and the housing 441 to reciprocate, where the translation device 450 may be implemented by driving a rack and pinion with a motor, or directly driving the first electromagnet 420 with a linear motor.
It should be noted that, in this embodiment, the piston 440 is integrally located inside the cylinder 410 and is driven by magnetic force to reciprocate, and a solid traction member does not need to penetrate through the cylinder 410 to pull the piston 440, so that the sealing performance of the whole extraction device is effectively ensured, and the extraction liquid is prevented from overflowing.
As shown in fig. 1 and 2, a seventh electromagnetic valve 270 is connected between the cylinder 410 and the second extraction flask 120, and the fifth electromagnetic valve 250 is connected to a branch between the seventh electromagnetic valve 270 and the second extraction flask 120; after extraction is completed, the fifth electromagnetic valve 250 can be opened after the seventh electromagnetic valve 270 is closed, and the extracted water sample is collected, so that the extracted water sample is prevented from entering the cylinder 410, and water enters the cylinder 410.
Further, in order to better collect the extracted water sample and facilitate centralized treatment, a liquid storage tank 310 is connected between the fifth electromagnetic valve 250 and the vacuum pumping device; the liquid storage tank 310 can collect the benzene extractant sucked from the fifth electromagnetic valve 250, and the water sample is still remained in the communicating pipe 130 under the action of gravity, so that the separation effect of the extraction liquid and the water sample is effectively ensured.
As shown in fig. 4, in order to prevent the vacuum apparatus from being damaged by the liquid fed thereto, a fifth solenoid valve 250 and the vacuum apparatus are connected to the upper end of the liquid storage tank 310; specifically, as shown in fig. 4, the liquid storage tank 310 has an inner cavity for storing the benzene extractant, the upper end of the liquid storage tank 310 has an air outlet 311 and a liquid inlet, the liquid inlet is connected to the fifth solenoid valve 250, the air outlet 311 is connected to a non-illustrated vacuum extractor, and after the liquid passes through the liquid inlet, the liquid falls into the liquid storage cavity at the lower end of the liquid storage tank 310 under the action of gravity, so that the benzene extractant is effectively prevented from entering the vacuum extractor.
As shown in fig. 3, the housing 441 is disposed to surround the core 442, and the length a of the housing 441 is greater than the diameter d of the housing 441; in the extraction process, a small amount of water sample occasionally enters the inner cavity of the cylinder 410, if the iron core 442 is exposed, the iron core 442 is rusted after long-term use, and therefore the shell 441 can be used for wrapping the iron core 442; at this time, for the sealing performance between the piston 440 and the cylinder 410, a rubber housing 441 may be wrapped around the iron core 442, or a plastic dipping process may be adopted, and a soft plastic housing 441, etc. may be disposed around the iron core 442; in addition, the length a of the housing 441 is greater than the diameter d of the housing 441 to ensure that the piston 440 does not eccentrically slide within the cylinder 410.
As shown in fig. 1, a second electromagnet 430 and a first electromagnet 420 are respectively disposed at both ends of a cylinder 410; during extraction, the first electromagnet 420 and the second electromagnet 430 may be alternately energized, so that the first electromagnet 420 and the second electromagnet 430 alternately generate an attractive force on the iron core 442, and the iron core 442 drives the housing 441 to reciprocate in the cylinder 410.
As shown in fig. 2, in order to reduce the number of electromagnets, a translation device 450 is disposed on the cylinder 410, and the translation device 450 is in driving connection with the first electromagnet 420; at this time, the translation device 450 may drive the first electromagnet 420 to reciprocate along the extending direction of the cylinder 410, and further drive the iron core 442 and the housing 441 to reciprocate in the cylinder 410.
In a second aspect of this embodiment, an extraction method is provided, in which the extraction apparatus with automatic extraction and liquid extraction functions according to the first aspect of this embodiment is applied, and the extraction method includes the following steps: a liquid feeding step, namely filling a water sample to be detected into a first extraction bottle 110, and filling a benzene extractant into a second extraction bottle 120; an extraction step of closing the third and fifth solenoid valves 230 and 250, opening the sixth solenoid valve 260, and controlling the first electromagnet 420 such that the piston 440 reciprocates in the cylinder 410; and a liquid taking step, wherein the sixth electromagnetic valve 260 is closed, the third electromagnetic valve 230 and the fifth electromagnetic valve 250 are opened, and the extracted water sample is pumped out through a vacuumizing device.
Further, as shown in fig. 1, the extracting step includes controlling the first electromagnet 420 and the second electromagnet 430 to be energized in turn, so that the core 442 drives the housing 441 to reciprocate at a position between the first electromagnet 420 and the second electromagnet 430.
On the other hand, as shown in fig. 2, the extraction step includes controlling the translation device 450 to reciprocate the first electromagnet 420 after being energized.
In a third aspect of the present embodiment, an extraction apparatus with an automatic extraction function is provided, including: a first extraction flask 110 and a second extraction flask 120; a connection pipe 130 for connecting the bottom end of the first extraction flask 110 and the bottom end of the second extraction flask 120; a cylinder 410, both ends of which are respectively connected with the top ends of the first extraction flask 110 and the second extraction flask 120; a piston 440 provided inside the cylinder 410 and having a housing 441 and an iron core 442 provided on the housing 441; the first electromagnet 420 is disposed outside the cylinder 410, and can drive the iron core 442 by magnetic force to slide the housing 441 in the cylinder 410.
When the extraction device with the automatic extraction function of the third aspect of this embodiment is applied, during extraction, a water sample to be extracted is first loaded into the first extraction bottle 110, a benzene extractant is loaded into the second extraction bottle 120, then the sixth electromagnetic valve 260 is opened, the third electromagnetic valve 230 and the fifth electromagnetic valve 250 are closed, so that the water sample to be extracted and the extractant are isolated from the outside atmosphere, then the first electromagnet 420 is controlled to apply a magnetic force to the iron core 442, so that the iron core 442 drives the housing 441 to reciprocate in the cylinder 410, at this time, the air pressures at the two sides of the piston 440 are alternately changed under the action of the piston 440, because the density of the benzene extractant is less than that of the water sample, the water sample is relatively fixed at the position of the communicating pipe 130 under the action of gravity, and the benzene extractant continuously passes through the water sample under the action of the alternate air pressures at the two sides, so that oily substances in the water sample, in the extraction process, the extraction speed can be increased by increasing the reciprocating speed of the piston 440, the vacuumizing device does not need to be started or stopped frequently, the limitation of the vacuumizing device on the extraction speed is effectively avoided, and the extraction efficiency is improved.
As shown in fig. 1 and 2, in order to prevent a sample of water from entering the cylinder 410 when separating the sample of water and the extraction liquid, the extraction apparatus further includes: a sixth solenoid valve 260 connected between the cylinder 410 and the first extraction flask 110; the seventh solenoid valve 270 is connected between the cylinder 410 and the second extraction flask 120.
In order to ensure the smoothness of the water sample extraction, a third electromagnetic valve 230 is connected to a branch between the sixth electromagnetic valve 260 and the first extraction bottle 110, and the third electromagnetic valve 230 can be communicated with external air; when the extracted benzene extractant is collected, the third electromagnetic valve 230 can be opened, so that atmospheric pressure can act on the benzene extractant, and the benzene extractant is ensured to be smoothly extracted.
Further, a second electromagnetic valve 220 is connected to a branch between the sixth electromagnetic valve 260 and the first extraction flask 110, and the second electromagnetic valve 220 can be communicated with a liquid inlet pipeline; at this time, the second electromagnetic valve 220 can be butted with an external liquid inlet pipeline, so that automatic liquid inlet of a water sample is realized.
A fourth electromagnetic valve 240 is connected to a branch between the seventh electromagnetic valve 270 and the second extraction flask 120, and the fourth electromagnetic valve 240 can be communicated with the outside atmosphere; at this time, the fourth electromagnetic valve 240 may be connected to a liquid supply line of the benzene extractant, so as to realize automatic liquid supply of the benzene extractant.
As shown in fig. 1 and 2, a fifth solenoid valve 250 is connected to a branch between the seventh solenoid valve 270 and the second extraction flask 120, and the fifth solenoid valve 250 is used for connecting a vacuum extractor.
Further, a liquid storage tank 310 is connected between the fifth solenoid valve 250 and the vacuum pumping device.
Further, the fifth solenoid valve 250 and the vacuum pumping means are connected to the upper end of the reservoir 310.
Further, the housing 441 is disposed to surround the core 442.
As shown in fig. 1 and 2, the bottom end of the communication pipe 130 is connected with a first solenoid valve 210; when the extracted benzene extractant needs to be discharged, after the sampled water is extracted, the fifth solenoid valve 250, the sixth solenoid valve 260, the seventh solenoid valve 270 and the second solenoid valve 220 are closed, and the first solenoid valve 210 and the third solenoid valve 230 are opened, so that the benzene extractant is discharged from the first solenoid valve 210.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (3)
1. An extraction method, which applies an extraction device with automatic extraction and liquid extraction functions, is characterized by comprising the following steps:
a liquid inlet step, namely filling a water sample to be detected into a first extraction bottle (110), and filling a benzene extractant into a second extraction bottle (120);
an extraction step of closing the third electromagnetic valve (230) and the fifth electromagnetic valve (250), opening the sixth electromagnetic valve (260), and controlling the first electromagnet (420) so that the piston (440) reciprocates in the cylinder (410);
a liquid taking step, namely closing the sixth electromagnetic valve (260), opening the third electromagnetic valve (230) and the fifth electromagnetic valve (250), and pumping out the extracted water sample through a vacuumizing device;
the extraction device with automatic extraction and liquid extraction functions comprises:
a first extraction flask (110) and a second extraction flask (120);
a communicating tube (130) communicating the bottom end of the first extraction flask (110) and the bottom end of the second extraction flask (120);
the two ends of the cylinder body (410) are respectively connected with the top end of the first extraction bottle (110) and the top end of the second extraction bottle (120);
a piston (440) provided inside the cylinder (410) and having a housing (441) and an iron core (442) provided on the housing (441);
the first electromagnet (420) is arranged outside the cylinder body (410), and can drive the iron core (442) through magnetic force to drive the shell (441) to reciprocate between the two ends in the cylinder body (410);
a sixth solenoid valve (260) connected between the cylinder (410) and the first extraction flask (110);
the third electromagnetic valve (230) is connected to a branch between the sixth electromagnetic valve (260) and the first extraction bottle (110);
and the fifth electromagnetic valve (250) is connected to a branch between the cylinder body (410) and the second extraction bottle (120), and the fifth electromagnetic valve (250) is used for connecting a vacuum-pumping device.
2. An extraction method according to claim 1, wherein the extraction step comprises controlling the first electromagnet (420) and the second electromagnet (430) to be energized in turns so that the plunger (442) reciprocates the housing (441) at a position between the first electromagnet (420) and the second electromagnet (430).
3. An extraction method according to claim 1, characterized in that the extraction step comprises controlling the translation means (450) to reciprocate the first electromagnet (420) after the energization.
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| CN202010743825.8A CN111991844B (en) | 2020-07-29 | 2020-07-29 | Extraction device with automatic extraction and liquid taking functions and extraction method |
| CN202110121472.2A CN112915585B (en) | 2020-07-29 | 2020-07-29 | Extraction device with automatic extraction and liquid taking functions and extraction method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112915585A (en) | 2021-06-08 |
| CN111991844A (en) | 2020-11-27 |
| CN112915585B (en) | 2022-03-22 |
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